Category:Hardware & Tools/Pipe Fittings/Tee Fittings

Product Description:Working Reset Process of Mine Pneumatic Pressure-Free Air DoorsThe reset process of mine pneumatic pressure-free air doors is an automatic cycle where the system transitions from the "passage state" back to the "standby state," accomplished through the coordinated action of sensor detection, controller commands, and pneumatic drive. The specific steps are as follows:1. Passage Completion DetectionAfter personnel or vehicles completely pass through the air door, infrared sensors (or other sensing devices) on both sides of the door monitor the detection range in real time. Once it is confirmed that there are no remaining targets in the area, an electrical signal indicating "passage completed" is sent to the core controller.If there is continuous obstruction, such as by a long vehicle, the sensors will continue to send signals to ensure the door remains open until the target completely leaves the detection area.2. Delay Program Initiation<img src="https://img-i-album.toocle.com/view/2025/08/06/bd/6892d4cc23dbd.jpg" style="font-size: 14px; max-width: 100%;"/>Upon receiving the "passage completed" signal, the controller automatically initiates a preset delay program (the delay time can be adjusted according to passage needs, typically 5-30 seconds), providing a buffer period to prevent secondary passage within a short time.During the delay period, the door remains open, and the audible and visual warning devices continue to operate (e.g., green light on, warning sound active), indicating that the passage phase is still ongoing.3. Door Closing Command TriggeredAfter the delay period ends, the controller determines that there is no need for secondary passage and immediately sends a door closing command to the pneumatic drive system. The pneumatic valve actuates and switches, stopping the input of compressed air into the cylinder, which then begins to exhaust and depressurize.4. Door Closing ActionThe cylinder piston rod retracts under the release of air pressure, driving the door to slowly rotate and close via a linkage mechanism. During the closing process, the speed control device regulates the action speed (typically taking 5-8 seconds to complete closing), ensuring smooth movement of the door and avoiding impact.When the door closes, the sealing strip between the door frame and the door leaf tightly adheres, achieving effective sealing and maintaining air pressure balance in the ventilation area.5. System Status ResetAfter the door is fully closed, the controller activates the locking device to ensure that air doors on the same side or opposite sides cannot open simultaneously, preventing abnormal airflow. At the same time, the pneumatic system resets to its initial pressure state, and the sensors resume real-time monitoring mode.The audible and visual warning devices turn off, and the entire system enters standby mode, awaiting the next sensing signal to trigger and complete the entire work cycle.Through the above process, mine pneumatic pressure-free air doors can automatically complete the reset from post-passage closing to standby state without manual intervention, ensuring continuous adaptation to the ventilation control needs of complex underground environments. more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

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Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

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Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

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Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

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Category:Hardware & Tools/Cutting Power Tools/Drill Bits

Product Description:<img src="https://img-i-album.toocle.com/view/2024/04/19/c8/6621bed352fc8.jpg" style="max-width:100%;"/>The working principle of the tumbler involves using the physical impact principle in a vacuum state to make meat blocks or minced meat tumble up and down inside the drum, colliding with each other and being beaten, thereby achieving massaging and marinating effects. The marinade is fully absorbed by the meat, enhancing the binding force and elasticity of the meat, improving the taste and cross-section effect of the product; it can enhance water retention, increase the yield; and it can improve the internal structure of the product.Features of the vacuum tumbler:1. Using a vacuum tumbler allows the marinade to be evenly absorbed into the raw meat, quickly marinating the product to make it flavorful.2. Marinating with a vacuum tumbler enhances the binding force of the meat and improves its elasticity.3. Meat products marinated with a vacuum tumbler ensure the sliceability of the meat, preventing it from breaking or cracking during slicing.A tumbler is a modern food processing equipment widely used in meat processing, marinating, canned food production, and the catering industry. Through mechanical tumbling and massaging, it makes meat more tender and flavorful, improving the quality and taste of the product. This article will introduce the working principle, types, features, and application scenarios of tumblers. (Food processing machinery manufacturer Tel: 138*5448-1138)I. Working Principle of the TumblerThe tumbler makes meat more tender and flavorful during processing through tumbling and massaging. Its working principle is mainly based on the following two aspects:1. Tumbling Effect: The tumbler uses forward and reverse rotation to make meat blocks continuously tumble, collide, and rub inside the drum, gradually softening the surface of the meat blocks. The internal muscle fibers are appropriately stretched and compressed, making the meat blocks more tender.2. Massaging Effect: During the tumbling process, the meat blocks are subjected to certain pressure and friction. These forces act on the surface and muscle fibers of the meat blocks, similar to the effect of manual massaging, helping to promote blood circulation inside the meat blocks and relax the muscle fibers, making the meat more tender and delicious.<img src="https://img-i-album.toocle.com/view/2024/04/19/28/6621bee039a28.jpg" style="max-width:100%;"/>Types of TumblersDepending on their structure and function, tumblers can be divided into the following types:1. Horizontal Tumbler: The horizontal tumbler is a common type of tumbler with a simple structure and easy operation. It is usually made of stainless steel and equipped with mixing blades inside to stir and tumble large pieces of meat. This equipment is suitable for meat processing plants and the catering industry where large quantities of meat need to be processed.2. Vertical Tumbler: The vertical tumbler is a device suitable for small-batch processing, with a compact structure and small footprint. It is usually made of transparent glass or acrylic, allowing the operator to observe the tumbling process at any time. This equipment is suitable for small food processing enterprises and individual workshops.3. Vacuum Tumbler: The vacuum tumbler is a modern tumbling device that can perform tumbling and massaging in a vacuum environment. This equipment can effectively remove gases from the meat blocks, reduce oxidation and discoloration during processing, and improve the quality and shelf life of the product. It is suitable for meat processing plants and canned food production enterprises where long-term preservation is required.4. Frequency Conversion Tumbler: The frequency conversion tumbler is an energy-saving and environmentally friendly device that uses frequency conversion technology to adjust the tumbling speed and time according to different processing needs. This equipment can effectively reduce energy consumption and noise pollution, improving production efficiency and product quality. It is suitable for food processing enterprises and the catering industry with high environmental requirements. more>

Category:Hardware & Tools/Brushes/Other Brushes

Product Description:The zong leaf washing machine adopts bubble water bath cleaning. This cleaning machine uses bubble cleaning, suitable for washing jujubes, and can be customized according to the quantity of the product. 1. The frame is made of SUS304 stainless steel, meeting the usage standards of the food industry. 2. It uses bubble agitation, brushing, and spraying technology to clean the materials. 3. Each unit in the production line can be customized according to the user's specific processing needs to meet process requirements. 4. The cleaning speed is steplessly adjustable, allowing users to set it arbitrarily based on different cleaning contents. 5. The machine is compact in structure, highly automated, and suitable for enterprises of various processing scales. Especially suitable for: jujube washing and soaking equipment. Advantages: 1. The material is equipped with a high-pressure spray design at the inclined lifting section after cleaning, ensuring surface rinsing of the material so that no foam remains when the material exits (spray water is recycled, saving energy and reducing emissions). 2. The tank is made of 2mm stainless steel; stress-bearing parts are made of 4mm stainless steel; the frame is made of 100x50x3mm stainless steel square tubes; all bearings and bearing seats of the machine are made of stainless steel. 3. The machine is equipped with multiple (φ108) cleaning holes, and both sides of the equipment are fitted with large (240x120mm) cleaning ports, allowing high-pressure water guns to reach the bottom of the equipment for easy and hygienic cleaning.Features and uses of the zong leaf washing machine:1. Except for standard parts such as motors and bearings, the zong leaf washing machine is made of SUS304 stainless steel, meeting export food hygiene requirements. The cleaning equipment is equipped with a bubble generator, which causes the materials to tumble, effectively removing pesticide residues from the product surface. At the same time, an appropriate amount of chemicals can be added for disinfection and color fixation. Floating debris can overflow from the overflow tank, and sediments can be discharged from the drain port to achieve the cleaning purpose. With the combined action of bubbles, waves, lifting, and spraying, this cleaning machinery offers high cleanliness, energy savings, water conservation, stable and reliable performance, and the ability to maintain the original color. It is an ideal equipment for the vegetable, food processing, and catering industries.2. The zong leaf washing machine is suitable for: leafy vegetables, edible fungi, fruits, aquatic products, Chinese herbal medicines, and other granular, leafy, and root-based products for cleaning, soaking, sterilization, disinfection, and color fixation.3. The conveyor part of this machine uses SUS304 stainless steel mesh belts, offering stable operation and a long service life, meeting food hygiene requirements. (Food processing machinery manufacturer Tel: 138*5448-1138) more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

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Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:<img src="https://img-i-album.toocle.com/view/2024/12/18/b0/6762774a246b0.png" style="max-width:100%;"/> more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

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Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:<img src="https://img-i-album.toocle.com/view/2024/12/19/8e/6763d07fa258e.jpg" style="max-width:100%;"/> more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

Product Description:<img src="https://img-i-album.toocle.com/view/2024/12/23/24/6768ca121fe24.png" style="max-width:100%;"/> more>

Category:Hardware & Tools/Welding Materials & Accessories/Other Welding Materials

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Category:Hardware & Tools/Pipe Fittings/Tee Fittings

Product Description:The working principle of the mine pneumatic air door control device is based on the coordinated operation of pneumatic drive and automated sensing control. By detecting passage demands, transmitting control commands, and driving the door mechanism, it achieves automatic opening, holding, and closing of the air door, ensuring smooth underground passage and stable equipment operation. The specific process is as follows:Sensing Trigger PhaseThe device uses sensors installed on both sides of the air door (such as infrared sensors, ultrasonic sensors, etc.) to monitor passage targets in real time. When personnel, vehicles, or equipment enter the detection range of the sensors, the sensors capture the movement signal and convert it into an electrical signal, which is transmitted to the core control unit (controller), issuing a passage demand command.Command Judgment PhaseAfter receiving the sensor signal, the controller performs logical judgment based on preset programs. It verifies the validity of the signal (excluding interference signals) and confirms the current status of the air door (e.g., no door on the same side is open, no equipment abnormalities, etc.) through feedback from the locking device.<img src="https://img-i-album.toocle.com/view/2025/08/06/cb/6892d5ce87ecb.jpg" style="max-width: 100%;"/><img src="https://img-i-album.toocle.com/view/2025/08/06/79/6892d5ceae479.jpg" style="max-width: 100%;"/><img src="https://img-i-album.toocle.com/view/2025/08/06/b6/6892d5cec55b6.jpg" style="max-width: 100%;"/>If the conditions are met, the controller generates an open-door command; if not, it temporarily suspends action to avoid conflicts.Pneumatic Drive PhaseThe controller transmits the open-door command to the pneumatic control components (such as solenoid directional valves, flow control valves, etc.). After receiving the command, the pneumatic components control the compressed air to enter the pneumatic actuator (usually a cylinder) through the air tube, pushing the piston rod inside the cylinder to extend. This, in turn, drives the air door panel to rotate around the hinge via transmission structures like linkages, smoothly opening to the preset angle. During this process, the flow control valve regulates the airflow speed to ensure the door opens slowly and steadily, avoiding impact.Passage Holding PhaseOnce the door panel is fully opened, the pneumatic control components lock the cylinder position to keep the door open. At the same time, audio-visual warning devices (such as indicator lights and buzzers) activate, signaling "Door is open, safe to pass" to the passage target, allowing sufficient time for passage. If there is a continuous passage demand (e.g., a long vehicle passing through), the sensors continue to send signals to ensure the door remains open.Reset and Closing PhaseAfter the passage target has completely passed through the air door, the sensors detect no remaining targets within the detection range and send a "passage completed" signal to the controller. The controller initiates a preset delay program (the delay time can be adjusted as needed), and after the delay ends, it issues a close-door command. Upon receiving the command, the pneumatic control components exhaust the cylinder air, causing the piston rod to retract under the reset force (such as the cylinder return spring or gravity assistance). This drives the door panel to close slowly via the transmission structure.Sealing and Reset PhaseDuring the door closing process, the sealing strip on the edge of the door panel tightly fits with the door frame, achieving effective sealing. After fully closing, the locking device automatically engages to ensure the door remains stably closed. Meanwhile, the controller resets to standby mode, waiting for the next sensing trigger to complete the entire work cycle.Through the above process, the mine pneumatic air door control device leverages the efficient drive of pneumatic power and the precise coordination of automated sensing control to achieve unmanned operation of the air door, meeting the demands of passage and equipment control in complex underground environments. more>

Category:Hardware & Tools/Cutting Power Tools/Drill Bits

Product Description:SJ6000Machine Tool Inspection Laser Interferometer can detect the linear positioning accuracy, repeat positioning accuracy, and other parameters such as pitch angle, yaw angle, straightness, and perpendicularity of the guide rails in precision motion equipment like CNC machine tools and coordinate measuring machines. It features dynamic measurement and analysis capabilities, including displacement analysis, velocity analysis, acceleration analysis, amplitude and frequency analysis, enabling vibration analysis, dynamic characteristic analysis of screw guides, and response characteristic analysis of drive systems. Built-in with 13 standards, including GB, ISO, British, American, German, Japanese, and other domestic and international common standards. It can analyze and process data according to various machine tool standards and print corresponding graphs and data reports.<img src="https://img71.ybzhan.cn/2/20220310/637825164010765608361.jpg"/>The high directionality, high coherence, and high monochromaticity of lasers give them advantages that ordinary light sources lack. With laser interferometry as the core, the SJ6000Machine Tool Inspection Laser Interferometer achieves nanometer-level resolution in machine tool accuracy testing. The adopted dual-longitudinal-mode thermal frequency stabilization technology enables high-precision, long-term stable laser frequency output. The interferometer and main unit are designed separately, avoiding thermal effects on the interferometer and ensuring stable and reliable interferometric light paths.Measurement Functions(1) Capable of high-precision measurement of geometric parameters such as linear displacement, angle, straightness, perpendicularity, parallelism, flatness, and rotary axis;(2) Can detect the linear positioning accuracy, repeat positioning accuracy, and other parameters such as pitch angle, yaw angle, straightness, and perpendicularity of the guide rails in precision motion equipment like CNC machine tools and coordinate measuring machines;(3) Enables measurement and calibration of machine tool rotary axes;(4) Automatically generates error compensation tables based on user-defined compensation methods, providing a basis for equipment error correction;(5) Features dynamic measurement and analysis capabilities, including displacement analysis, velocity analysis, acceleration analysis, amplitude and frequency analysis, enabling vibration analysis, dynamic characteristic analysis of screw guides, and response characteristic analysis of drive systems;(6) SJ6000Machine Tool Inspection Laser Interferometer supports manual or automatic environmental compensation.<img src="https://img76.ybzhan.cn/2/20220218/637807711644084115142.jpg"/><img src="https://img75.ybzhan.cn/2/20220310/637825163953968889132.jpg"/>Technical SpecificationsMain UnitFrequency Stabilization Accuracy: 0.05 ppmDynamic Acquisition Frequency: 50 kHzWarm-up Time: ≤ 6 minutesOperating Temperature Range: (0~40)°CStorage Temperature Range: (-20~70)°CEnvironmental Humidity: (0~95)% RHEnvironmental Compensation UnitAir Temperature Sensor: ±0.1°C (0~40)°C, Resolution 0.01°CMaterial Temperature Sensor: ±0.1°C (0~55)°C, Resolution 0.01°CAir Humidity Sensor: ±6% RH (0~95)% RHAtmospheric Pressure Sensor: ±0.1 kPa (65~115) kPa more>

Category:Hardware & Tools/Fasteners & Connectors/Other Fasteners & Connectors

Product Description:With 15 years of professional experience in fastener manufacturing, our non-loosening spring screw product models include: PF09, PF10, PF11, PF12, PF13, PF14, PF15, PF25, PF16, PF26, PF30, PF31, PF32, PFC2, PFS2, PFC2P, PF21, PF22, PF41, PF42, PF51, PF52, PF50, PF60, PFHV, and other standards. We also produce press-in nuts, studs, screws, clip nuts, expansion nuts, crown screws, non-loosening screws, welding screws and studs, panel screws, hand-tight screws, as well as custom non-standard parts based on provided drawings or samples.PEM Standard Press-In Fasteners1. Press-in nuts S CLS 2. Expansion nuts Z ZS NZ NZS 3. Insert nuts F 4. Floating nuts AS press-in studs 5. Mobile phone nuts, copper insert nuts 6. Extruded nuts KF2 KFS2 7. Press-in studs BSO BSOS 8. Press-in studs SO SOS 9. Press-in studs SOO SOOS 10. Extruded studs KFE KFES 11. Press-in nuts B BS 12. Other press-in studs CSS DSO SOAG 13. Press-in screws FH FHS 14. Hex head press-in screws NFH NFHS 15. Other press-in screws HFH KFH CHA 16. Spring screws (non-loosening) FC-3 17. Spring screws (non-loosening) PF09 18. Spring screws (non-loosening) PF21 PF22 19. Spring screws (non-loosening) PF31 PF32 20. Spring screws (non-loosening) PF41 PF42 21. Spring screws (non-loosening) PF51 PF52 22. Spring screws (non-loosening) PFC2P 23. Spring screws (non-loosening) PFC2 PFS2 24. Spring pins PT 25. Panel screws PFHV 26. Non-loosening screws PS10 PR10 N10 27. Guide pins TPS 28. Positioning posts SKC 29. Support clip posts SSS SSC SSA 30. Crown screws 31. Clip nuts (floating nuts) 32. Panel screws 33. Hand-tight screws 32. Copper studs, hex studs, spacer posts 33. Weld studs (projection weld screws) 34 Self-tapping screws 35. Combination screws 36. Hex socket head cap screws 37. Weld nuts (projection weld nuts), and other standard/non-standard parts. Custom processing based on drawings or samples is welcome! Contact: 0755-21052548 more>