A control valve air tightness detection device

Abstract

The application discloses a kind of control valve air tightness detection equipment, it is related to air tightness detection technical field, including placement assembly, placement assembly is located in detection box body inside, placement assembly includes placement base, sliding groove is opened in placement base, clamping slide is slidably arranged in sliding groove, clamping slide is fixed with matching plate, matching groove is opened in matching plate, vacuum generator is arranged in matching groove side, the bottom of clamping slide is provided with buffer assembly, the air tightness of control valve is detected by being placed on matching groove in the application, by external pressure, control valve is pressed downward, so that clamping slide moves downward, buffer assembly is pressed down, then under the action of buffer assembly, clamping slide moves upward, the clamping effect of control valve is released, control valve is directly bounced up, so that longitudinal clamping assembly is clamped to the side of control valve, solve the problem of unstable adsorption of control valve using adsorption.

Description

Technical Field

[0001] This invention relates to the field of airtightness testing technology, specifically to an airtightness testing device for control valves. Background Technology

[0002] Control valves are actuators in automated control systems, and their application quality directly reflects the system's regulatory quality. As terminal components in process control, the quality and lifespan of control valves directly affect the stability of the control system. A universal control valve consists of a rotor made of permanent magnets, a stator made of excitation coils, a feed screw that converts rotary motion into linear motion, and the valve itself. It utilizes a stepping signal supplied by the system for conversion control, allowing the rotor to rotate in both directions, causing the valve core to extend and retract to adjust the cross-section of the bypass air passage, thereby stabilizing the idle speed.

[0003] When checking the airtightness of a control valve, the connecting end of the control valve needs to be sealed, gas is then introduced into the control valve, and the gas and pressure are measured to determine the airtightness of the control valve. During the test, the control valve is placed on the test base, and the control valve is sealed by pressing down the sealing plate. Then, when removing the control valve from the test base, the upper end of the control valve is adsorbed to remove the control valve from the test base. During the adsorption process, because there may be particles on the upper surface of the control valve, or because the suction force is unstable during adsorption, the control valve may fall off when unloading. Summary of the Invention

[0004] The purpose of this invention is to provide a control valve airtightness testing device.

[0005] The technical problem solved by this invention is to address the issue that the adsorption force is unstable when the control valve is clamped by adsorption in the prior art, which affects the clamping stability of the control valve.

[0006] The present invention can be achieved by the following technical solution: a control valve airtightness testing device, including a placement component, the placement component being located inside the testing chamber, the placement component including a placement base, a sliding groove being provided on the placement base, a clamping slide being slidably disposed inside the sliding groove, a matching plate being fixed on the clamping slide, a matching groove being provided on the matching plate, a vacuum generator being provided on the side of the matching groove, and a buffer component being provided at the bottom of the clamping slide.

[0007] A further technical improvement of the present invention is that: the buffer assembly includes a hinge rod, a horizontal seat is fixed inside the sliding groove, a hinged sliding groove is provided on the horizontal seat, a first sliding rod is fixed inside the hinged sliding groove, a hinged sliding sleeve is slidably arranged on the clamping slide, a second hinged seat is fixed on the hinged sliding sleeve, a first hinged seat is fixed at the bottom of the clamping slide, the hinge rod is rotatably arranged on the first hinged seat and the second hinged seat, and a first spring is provided between the hinged sliding sleeve and the hinged sliding groove.

[0008] A further technical improvement of the present invention is as follows: a slide bar is fixed on the side of the second hinge seat, and a rack is evenly arranged on the slide bar. A connecting gear is rotatably arranged inside the placement base. The connecting gear and the rack are meshed and connected. A push plate is fixed on the connecting gear. A second slide rod is slidably arranged on the side of the placement base. A first limiting block and a second limiting block are fixed at both ends of the second slide rod, respectively. The first limiting block is located inside the placement base, and a second spring is fixed between the first limiting block and the placement base. The push plate and the first limiting block are used in conjunction.

[0009] A further technical improvement of the present invention is that: a clamping support rod is fixed on the side of the base, and a pressing plate is rotatably provided at the end of the clamping support rod by a torsion spring. A connecting belt is fixed in the middle of the pressing plate, and the connecting belt is connected to the side of the clamping slide by a guide assembly.

[0010] A further technical improvement of the present invention is that: a side slider is fixed to the side of the clamping slide, the side slider is slidably connected to the placement base, and the side slider is fixedly connected to the connecting strip.

[0011] A further technical improvement of the present invention is that: the inside of the detection box is fixed with a good product hopper and a bad product hopper, with the bad product hopper being closer to the placement base than the good product hopper.

[0012] A further technical improvement of the present invention is that: the side of the detection box is connected to the feeding box, the feeding box is equipped with a conveyor belt, the conveyor belt is conveyed by the conveyor wheel, and a limit bracket is provided above the conveyor belt, and the limit bracket cooperates with the control valve.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This application places the control valve on the matching groove, and then applies external pressure during the airtightness test to press the control valve downward, causing the clamping slide to move downward and press down on the buffer assembly. At this time, the airtightness of the control valve is tested by a vacuum generator. During the test, a vacuum generator replaces the traditional vacuum pump, resulting in a very small pumping volume, making the test more convenient and accurate. After the test, the buffer assembly moves the clamping slide upward, thereby moving the matching plate upward and releasing the clamping effect of the control valve, making it easy for the control valve to be directly lifted. This facilitates the longitudinal clamping assembly to clamp the side of the control valve, solving the problem of unstable adsorption of the control valve under conventional conditions.

[0015] 2. In this application, when the clamping slide moves longitudinally, it drives the side slider to move longitudinally, so that the connecting belt can move longitudinally, thereby driving the clamping plate to rotate under the action of the clamping support rod. This allows the control valve to be clamped and fixed by the clamping plate when the control valve is tested for sealing, thus maintaining the stability of the control valve during the testing process.

[0016] 3. In this application, the hinged sliding sleeve slides on the first sliding rod, driving the sliding bar to move. When the rack and connecting gear mesh, the connecting gear is driven to rotate, causing the push plate to rotate. At this time, the push plate is pressed on the first limiting block, pushing the second sliding rod to move. At this time, the second spring is compressed. After the airtightness test is completed, the second spring causes the first limiting block to move, causing the connecting gear to rotate in the opposite direction. At the same time, under the action of the first spring, the position of the hinged sliding sleeve is adjusted, which facilitates the adjustment of the height of the clamping slide plate. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the placement component structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 A magnified view of a section at point A in the middle;

[0020] Figure 3 This is a schematic diagram of the longitudinal clamping assembly of the present invention;

[0021] Figure 4 This is a schematic diagram showing the relative positions of the feeding box and the inspection box of the present invention;

[0022] Figure 5 This is a schematic diagram of the internal structure of the feeding box and the detection box of the present invention;

[0023] Figure 6This is a schematic diagram of the feeding assembly structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the placement structure of the components of the present invention;

[0025] Figure 8 This is a schematic diagram of the vacuum generator's position and structure according to the present invention.

[0026] In the diagram: 1. Control panel; 2. Feeding box; 3. Detection box; 4. Feeding assembly; 401. Vibratory feeder; 402. Feeding bracket; 403. Limiting bracket; 404. Conveyor belt; 405. Conveyor wheel; 5. Sealing assembly; 501. Cylinder; 502. Second track; 6. Unloading assembly; 601. Good product hopper; 602. Inferior product hopper; 7. Placement base plate; 8. Positioning assembly; 801. First motor; 802. Rewinding box; 803. First support frame; 804. First bracket; 805. First track; 806. Second support frame; 807. Rewinding track; 9. Longitudinal clamping assembly; 901. Slide rail; 902. Clamping slider; 903. Clamping plate; 10. Placement component; 1001. Placement base; 1002. Matching groove; 1003. Vacuum generator; 1004. Connecting belt; 1005. Guide roller; 1006. Clamping slide plate; 1007. Hinge rod; 1008. Hinge slide groove; 1009. Second hinge seat; 1010. First hinge seat; 1011. Side slider; 1012. Clamping connecting rod; 1013. Clamping support rod; 1014. Pressing plate; 1015. First spring; 1016. First slide rod; 1017. Hinge sleeve; 1018. Slide bar; 1019. Push plate; 1020. Second spring; 1021. Second slide rod; 1022. Second limiting block; 1023. Connecting gear. Detailed Implementation

[0027] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0028] Please see Figure 1-8 As shown, a control valve airtightness testing device includes a feeding box 2 and a testing box 3, wherein the feeding box 2 and the testing box 3 are fixedly connected, and an operation panel 1 is provided on the testing box 3 for controlling and testing the airtightness testing process.

[0029] Specifically, a feeding assembly 4 is provided inside the feeding box 2, and the output end of the feeding assembly 4 is connected to the placement assembly 10. The placement assembly 10 is located inside the detection box 3, and a position moving assembly 8 is provided inside the detection box 3 to move the control valve. A placement base plate 7 is fixedly installed inside the detection box 3, and the position moving assembly 8 and the placement assembly 10 are both installed on the placement base plate 7. A sealing assembly 5 and a discharging assembly 6 are provided on the placement base plate 7. That is, in this application, the feeding assembly 4 is first used to feed the control valve, and then the fed control valve is moved to the placement assembly 10 through the position moving assembly 8. The airtightness of the control valve is tested by the action of the sealing assembly 5, and after the test, the control valve is moved by the position moving assembly 8 and discharged through the discharging assembly 6.

[0030] Firstly, the feeding assembly 4 includes a vibratory feeder 401, which drives the control valve to move by vibration, so that the control valve is fed through the feeding bracket 402 when vibrating. In this application, the feeding bracket 402 is located at the output end of the vibratory feeder 401, and a conveyor belt 404 is provided at the output end of the feeding bracket 402. The conveyor belt 404 is driven by a conveyor wheel 405, and a limit bracket 403 is provided on the conveyor belt 404. That is, the control valve is moved to the feeding bracket 402 by the action of the vibratory feeder 401, and the control valve is arranged by the feeding bracket 402. After being evenly arranged, it falls onto the conveyor belt 404. After being limited by the limit bracket 403 and conveyed by the conveyor wheel 405, the evenly arranged control valve is fed by the conveyor belt 404 while being limited by the limit bracket 403, thus realizing the feeding of the control valve.

[0031] The position moving component 8 includes a first bracket 804, which is fixedly installed inside the detection box 3. A first track wheel is rotatably mounted inside the first bracket 804. The first track wheel is driven by a first motor 801, and a first track 805 is mounted on the first track wheel. That is, the first motor 801 drives the rotation of the first track wheel, which in turn drives the first track 805 to move. A first support frame 803 is mounted on the first track 805, and the first support frame 803 is slidably connected to the first bracket 804. Therefore, when the first track 805 moves, it drives the first support frame 803 to move laterally, thereby realizing the lateral movement of the first support frame 803.

[0032] Subsequently, a winding box 802 is installed on the first support frame 803, and a winding track 807 is wound inside the winding box 802. A second support frame 806 is installed at the end of the winding track 807, and a longitudinal clamping component 9 is installed on the second support frame 806. The winding box 802 is used to wind the winding track 807. The second support frame 806 and the first support frame 803 are slidably connected. Therefore, when the winding track 807 is wound, it will drive the longitudinal clamping component 9 to move longitudinally, thereby controlling the longitudinal height of the longitudinal clamping component 9. By controlling the lateral and longitudinal positions of the longitudinal clamping component 9, the position of the control valve on the conveyor belt 404 is transferred, that is, the control valve is moved from the conveyor belt 404 to the placement component 10. After detection, the control valve is moved from the placement component 10 to the unloading component 6, so that the control valve is unloaded after detection.

[0033] Specifically, the feeding assembly 6 includes a good product hopper 601 and a bad product hopper 602, which are installed through the base plate 7. The good product hopper 601 is farther away from the bad product hopper 602 than the base plate 10. This is to ensure that when the control valve is removed from the base plate 10, the control valve first passes through the bad product hopper 602 and then through the good product hopper 601. In other words, if the longitudinal clamping assembly 9 has a problem, there may be a good product control valve inside the bad product hopper 602, but all the control valves inside the good product hopper 601 are good products, thus ensuring the quality of the good products inside the good product hopper 601.

[0034] The sealing component 5 includes a cylinder 501, which is installed at the output end of the second track 502. The lateral movement of the second track 502 drives the lateral movement of the cylinder 501, allowing the cylinder 501 to move onto the placement component 10. The output of the cylinder 501 drives the sealing end to move longitudinally, so that the sealing end seals above the control valve, thus sealing the control valve and facilitating the airtightness test of the control valve.

[0035] To enable airtightness testing of the control valve, the placement assembly 10 includes a placement base 1001, on which a matching groove 1002 is provided. A vacuum generator 1003 is provided on the side of the matching groove 1002. The control valve is placed on the matching groove 1002, and the bottom of the control valve is sealed by the sealing rubber at the bottom of the matching groove 1002. Then, the vacuum generator 1003 provided on the side of the matching groove 1002 applies a negative pressure to the control valve, thereby measuring the airtightness of the control valve and enabling airtightness testing of the control valve.

[0036] As a further embodiment of this application, in this application, a sliding groove is opened on the placement base 1001, and a clamping slide plate 1006 is slidably arranged inside the sliding groove. A clamping connecting rod 1012 is fixed on the clamping slide plate 1006, and a matching plate is fixed on the clamping connecting rod 1012. A matching groove 1002 is opened on the matching plate. In use, the control valve is placed inside the matching groove 1002 to achieve placement and sealing of the control valve. When pressure is applied from above, the matching plate moves longitudinally inside the sliding groove, driving the clamping connecting rod 1012 to move longitudinally, thereby realizing the longitudinal movement of the clamping slide plate 1006 and buffering the longitudinal movement of the control valve.

[0037] The clamping slide plate 1006 has a first hinge seat 1010 fixed to its bottom. A horizontal seat is fixed inside the sliding groove, and a hinge groove 1008 is formed on the horizontal seat. A first slide rod 1016 is fixed inside the hinge groove 1008. A hinge sleeve 1017 is slidably mounted on the clamping slide plate 1006, and a second hinge seat 1009 is fixed on the hinge sleeve 1017. A hinge rod 1007 is rotatably mounted on the first hinge seat 1010 and the second hinge seat 1009. When the clamping slide plate 1006 moves downwards, the hinge rod 1007... The angle changes, causing the hinged sleeve 1017 to slide on the first slide rod 1016. At the same time, a first spring 1015 is provided between the hinged sleeve 1017 and the hinged slide groove 1008. That is, during use, if the hinged sleeve 1017 moves laterally along the first slide rod 1016, the first spring 1015 is stretched. When the control valve is removed, the lateral position of the hinged sleeve 1017 is controlled by the action of the first spring 1015, which controls the height of the clamping slide plate 1006, and the control valve placed inside the matching groove 1002 is removed.

[0038] A clamping support rod 1013 is fixed to the side of the base 1001. A pressing plate 1014 is rotatably mounted at the end of the clamping support rod 1013 via a torsion spring. A connecting belt 1004 is fixed at the middle position of the pressing plate 1014. The connecting belt 1004 is guided by a guide roller 1005 and is located on the side of the clamping slide plate 1006. A side slider 1011 is fixed to the side of the clamping slide plate 1006. The side slider 1011 is slidably connected to the base 1001, and the connecting belt 1004 is fixed to the side of the side slider 1011. When the clamping slide plate 1006 moves longitudinally, it drives the connecting belt 1004 to move downward, causing the pressing plate 1014 to rotate. The pressing plate 1014 is used to clamp and control the control valve.

[0039] A slide bar 1018 is fixed to the side of the second hinge seat 1009. A rack is evenly distributed on the slide bar 1018. A connecting gear 1023 is rotatably disposed inside the placement base 1001, and the connecting gear 1023 meshes with the rack. A push plate 1019 is fixed to the connecting gear 1023. A second slide rod 1021 is slidably disposed on the side of the placement base 1001. A second limiting block 1022 and a first limiting block are fixed to both ends of the second slide rod 1021, respectively. The first limiting block is located inside the placement base 1001. A second spring 1020 is fixed between the base 1001 and the side wall. The push plate 1019 and the first limiting block are used together. That is, in use, the slide bar 1018 is controlled to move laterally by the second hinge seat 1009. When the rack and the connecting gear 1023 are engaged, the connecting gear 1023 is driven to rotate. At this time, the push plate 1019 rotates, so that the push plate 1019 contacts the first limiting block and squeezes the first limiting block, so that the second slide bar 1021 slides. At this time, the second spring 1020 is squeezed.

[0040] Furthermore, the longitudinal clamping assembly 9 includes a slide rail 901, which is mounted on the second support frame 806. A bidirectional screw is mounted on the slide rail 901, and clamping sliders 902 are symmetrically mounted on the bidirectional screw. The clamping sliders 902 are slidably connected to the slide rail 901, and a clamping plate 903 is fixed on the clamping sliders 902. In use, the bidirectional screw is driven by a power motor, causing the clamping sliders 902 to slide on the slide rail 901, thereby clamping and fixing the control valve using the clamping plate 903.

[0041] In use, the present invention first moves the control valve to the feeding bracket 402 by the action of the vibrating plate 401. The feeding bracket 402 arranges the control valves and drops them onto the conveyor belt 404 after they are evenly arranged. After being limited by the limiting bracket 403 and conveyed by the conveyor wheel 405, the evenly arranged control valves are fed by the conveyor belt 404 while being limited by the limiting bracket 403, thus realizing the feeding of the control valves.

[0042] Subsequently, by using the first motor 801 to drive the rotation of the first track wheel, the first track 805 can be driven to move. The first track 805 is provided with a first support frame 803, and the first support frame 803 and the first bracket 804 are slidably connected. Therefore, when the first track 805 moves, it drives the first support frame 803 to move laterally, thereby realizing the lateral movement of the first support frame 803.

[0043] When the winding box 802 is used to wind up the winding track 807, it will drive the longitudinal clamping component 9 to move longitudinally, thereby controlling the longitudinal height of the longitudinal clamping component 9. By controlling the lateral and longitudinal positions of the longitudinal clamping component 9, the position of the control valve on the conveyor belt 404 can be transferred, that is, the control valve is moved from the conveyor belt 404 to the matching groove 1002.

[0044] Using the output of cylinder 501, the sealing end head is moved longitudinally, sealing it above the control valve. The sealing end head then presses down on the control valve. At this time, the matching plate moves longitudinally within the sliding groove, causing the clamping connecting rod 1012 to move longitudinally, thus achieving the longitudinal movement of the clamping slide plate 1006 and buffering the longitudinal movement of the control valve. Simultaneously, the angle of the hinge rod 1007 changes, and the second hinge seat 1009 controls the hinge sleeve 1017 to move on the first slide rod 1016. This stretches the first spring 1015, simultaneously causing the slide bar 1018 to move... The movement is achieved through the meshing of the rack and pinion and the connecting gear 1023. The connecting gear 1023 rotates, controlling the push plate 1019 to rotate and pushing the first limit block to move, causing the second spring 1020 to be compressed. Simultaneously, when the clamping slide plate 1006 moves downward, it drives the connecting belt 1004 to move downward, thereby causing the pressing plate 1014 to rotate on the clamping support rod 1013. The pressing plate 1014 clamps the control valve. Then, the vacuum generator 1003 is used to create a negative pressure environment to test the airtightness of the control valve and obtain the quality of the tested product.

[0045] Subsequently, cylinder 501 moves away from matching slot 1002. Under the action of first spring 1015 and second spring 1020, it pushes the distance between second hinge seat 1009 to control the height of clamping slide plate 1006. At this time, pressing plate 1014 moves away from control valve. Then, control valve is moved out and clamped by clamping plate 903 to avoid the unstable adsorption of control valve by conventional suction cup.

[0046] The control valve is clamped and fed using the position moving component 8. The control valve is placed inside the inferior product hopper 602 or the good product hopper 601 as required, so as to classify the finished products. At this time, the quality of good products inside the good product hopper 601 can be guaranteed.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A control valve airtightness testing device, comprising a placement assembly (10), wherein the placement assembly (10) is located inside a testing chamber (3), characterized in that: The placement component (10) includes a placement base (1001), on which a sliding groove is provided, and a clamping slide plate (1006) is slidably disposed inside the sliding groove. A matching plate is fixed on the clamping slide plate (1006), and a matching groove (1002) is provided on the matching plate. A vacuum generator (1003) is provided on the side of the matching groove (1002), and a buffer component is provided at the bottom of the clamping slide plate (1006). The buffer assembly includes a hinge rod (1007), a horizontal seat is fixed inside the sliding groove, a hinge groove (1008) is provided on the horizontal seat, a first sliding rod (1016) is fixed inside the hinge groove (1008), a hinge sleeve (1017) is slidably arranged on the clamping slide plate (1006), a second hinge seat (1009) is fixed on the hinge sleeve (1017), a first hinge seat (1010) is fixed at the bottom of the clamping slide plate (1006), the hinge rod (1007) is rotatably arranged on the first hinge seat (1010) and the second hinge seat (1009), and a first spring (1015) is provided between the hinge sleeve (1017) and the hinge groove (1008). The placement base (1001) is fixed with a clamping support rod (1013) on its side. The end of the clamping support rod (1013) is rotatably provided with a pressing plate (1014) by a torsion spring. A connecting strap (1004) is fixed in the middle of the pressing plate (1014). The connecting strap (1004) is connected to the side of the clamping slide plate (1006) by a guide assembly.

2. The control valve airtightness testing device according to claim 1, characterized in that, The second hinge seat (1009) has a slide bar (1018) fixed on its side. The slide bar (1018) is evenly provided with racks. The placement base (1001) is rotatably provided with a connecting gear (1023). The connecting gear (1023) and the rack are meshed together. The connecting gear (1023) is fixed with a push plate (1019). The placement base (1001) has a second slide rod (1021) slidably provided on its side. The two ends of the second slide rod (1021) are respectively fixed with a first limiting block and a second limiting block (1022). The first limiting block is located inside the placement base (1001). A second spring (1020) is fixed between the first limiting block and the placement base (1001). The push plate (1019) and the first limiting block are used in conjunction.

3. The control valve airtightness testing device according to claim 1, characterized in that, The clamping slide plate (1006) has a side slider (1011) fixed on its side. The side slider (1011) is slidably connected to the placement base (1001), and the side slider (1011) is fixedly connected to the connecting belt (1004).

4. The control valve airtightness testing device according to claim 1, characterized in that, The inside of the testing box (3) is fixed with a good product hopper (601) and a bad product hopper (602), and the bad product hopper (602) is closer to the placement base (1001) than the good product hopper (601).

5. The control valve airtightness testing device according to claim 1, characterized in that, The detection box (3) is connected to the feeding box (2) on the side. The feeding box (2) is equipped with a conveyor belt (404). The conveyor belt (404) is conveyed by a conveyor wheel (405). A limit bracket (403) is provided above the conveyor belt (404). The limit bracket (403) cooperates with the control valve.

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