A valve core performance test bench

Abstract

This invention belongs to the field of valve core performance testing technology, and more particularly to a valve core performance testing bench. The valve core performance testing bench includes a shell, inside which a first storage box is inserted. A second storage box and a third storage box are horizontally arranged on both sides of the first storage box, and both are inserted into the shell. Inside the shell is a testing chamber with an operating port on one side. A support plate is fixedly connected to the bottom wall of the testing chamber, and a support platform is fixedly connected to the side wall of the support plate. A testing mechanism for testing the valve core is provided on one side of the support platform. This valve core performance testing bench can first test the airtightness of the valve core body on the bottom column, and then test the airtightness of the grooves on the valve core body to determine whether there are cracks or leaks in the groove walls. Furthermore, the multiple storage boxes allow for categorized placement, facilitating operation by staff.

Description

Technical Field

[0001] This invention relates to the field of valve core performance testing technology, specifically to a valve core performance testing bench. Background Technology

[0002] The automotive valve core is a valve component in a car that uses the movement of the valve body to achieve basic functions such as directional control, pressure control, or flow control. As a complex of technologies, automobiles require valves for control of air conditioning, engines, and brakes. Therefore, the accuracy of the valve core's machining is crucial. During the valve core machining process, it is necessary to sample and test the valve core's performance to avoid the presence of defective products.

[0003] The following problem was found: When conducting multiple sample tests, it is necessary to test the airtightness of the valve core. A valve core with air leakage cannot be used and may cause a car safety accident. Therefore, during continuous testing, valve cores with different problems are generally placed together by the staff, which is not convenient for them to be stored according to the test results, so as to facilitate the staff to judge what kind of problems the corresponding batch of valve cores will have.

[0004] To address the aforementioned issues, there is an urgent need for innovative design based on the existing valve core performance test bench. Summary of the Invention

[0005] The purpose of this invention is to provide a valve core performance test bench to solve the problem mentioned in the background art that the existing valve core performance test benches are not convenient for separating and storing according to the test results.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a valve core performance test bench, comprising a housing, a first storage box inserted into the interior of the housing, a second storage box and a third storage box horizontally arranged on both sides of the first storage box, and both the second storage box and the third storage box being inserted into the housing, and a test chamber being provided inside the housing;

[0007] An operation port is provided on one side of the detection chamber. A support plate is fixedly connected to the bottom wall of the detection chamber, and a support platform is fixedly connected to the side wall of the support plate. A detection mechanism for detecting the valve core is provided on one side of the support platform.

[0008] A top plate is fixedly connected to the top of the support platform. A passage groove is opened on the outer wall of the top plate, and a spring telescopic plate is slidably connected in the inner wall of the passage groove. A release mechanism for classifying and unloading valve cores with different test results is provided at the bottom end of the spring telescopic plate.

[0009] Preferably, the detection mechanism includes a support plate, the bottom end of which is slidably connected to the bottom end of the support platform, and the top end of which is slidably connected to the inner wall of the detection chamber. A sliding groove is provided in the inner wall of the support plate, and a sliding block is slidably connected in the inner wall of the sliding groove. A rotating column is rotatably connected in the inner wall of the sliding block. A bottom column is fixedly connected to the front end of the rotating column. A ventilation pipe is connected to the bottom end of the bottom column. A receiving groove is provided in the inner wall of the bottom column, and a valve core body is inserted into the inner wall of the receiving groove.

[0010] The top of the valve core body has a hollow groove.

[0011] Preferably, the detection mechanism further includes a sealing disc, the outer wall of which is fitted and connected to the inner wall of the bottom column, a telescopic connecting rod is fixedly connected to the top of the sealing disc, and the top of the connecting rod is fixedly connected to the top of the bearing plate, a power rod is fixedly connected to the bottom of the sealing disc, a limiting rod is sleeved on the bottom of the power rod, and a limiting post is slidably connected in the inner wall of the limiting rod, a spring is fixedly connected to the bottom of the power rod, and the bottom of the spring is fixedly connected to the inner wall of the limiting post, and the bottom of the limiting rod is inserted into the slot;

[0012] A left hinge rod is hinged to the outer wall of the limiting rod, and a clamping plate is hinged to the front end of the left hinge rod. A right hinge rod is hinged to the outer wall of the clamping plate, and a reverse sleeve is hinged to the other end of the right hinge rod. The reverse sleeve is fitted onto the power rod, and a cross-shaped abutment rod is provided on the outer wall of the directional sleeve. The outer wall of the abutment rod is slidably connected to the inner wall of the bottom column.

[0013] Preferably, a vent valve is provided on the bottom wall of the limiting rod, and the top and bottom ends of the vent valve are respectively connected to an air inlet pipe and an air outlet, and the bottom end of the air outlet is connected to the empty groove.

[0014] Preferably, the detection mechanism further includes an internal tooth groove, which is formed in the inner wall of the reverse sleeve, and a transmission gear meshes on the internal tooth groove. An external tooth groove meshes on the side of the transmission gear away from the internal tooth groove, and the external tooth groove is formed on the outer wall of the power rod.

[0015] The bottom end of the power rod is rotatably connected to a pull rod, and the bottom end of the pull rod is fixedly connected to a spring telescopic rod. The bottom end of the pull rod is inserted into an upper limit groove with a figure-eight structure, and a wedge block is fixedly connected to one side of the top wall of the upper limit groove. The bottom end of the upper limit groove is connected to a lower limit groove. Both the upper limit groove and the lower limit groove are opened on the limit post, and the lower limit groove is set with a W-shaped structure. A wedge block with the same structure is fixedly connected to the center wall of the lower limit groove.

[0016] A hollow receiving sleeve is fixedly connected to the outer wall of the limiting rod, and a sealing block is slidably connected to the inner wall of the receiving sleeve. A push block is fixedly connected to the top of the sealing block, and a slope is opened on the side of the push block. A pressing block is attached to the top of the push block, and a plug rod is fixedly connected to the side wall of the pressing block. The outer wall of the plug rod is inserted into the outer wall of the limiting post, and a slope with the slope facing upward is opened on the outer wall of the plug rod. The top of the plug rod has a protrusion formed by mechanical processing, and the protrusion is slidably connected to the top wall of the receiving sleeve. A return spring is provided between the protrusion and the inner wall of the receiving sleeve.

[0017] Preferably, the inclined edge of the wedge block in the upper limit groove is set to the left, and the inclined plate of the wedge block in the lower limit groove is set to the right.

[0018] Preferably, the release mechanism includes a trigger post, the top end of which is inserted into the bottom end of the spring telescopic plate, and the front end of the trigger post is fixedly connected to a plurality of equally spaced ring-shaped plug rods, the front ends of which are all inserted into a sliding block, and the front ends of the plug rods are fixedly connected to a compression spring, and the ends of the compression springs are fixedly connected to the inner wall of the sliding block.

[0019] The inner wall of the trigger post is fixedly connected to a limiting protrusion, and the inner wall of the trigger post is slidably connected to the inner wall of the rotating post. A spiral groove is provided on the inner wall of the trigger post, and the inner diameter of the spiral groove matches the outer diameter of the limiting protrusion. An arc-shaped block is attached to the rear end of the trigger post, and the arc-shaped block is fixedly connected to the support platform.

[0020] The bottom end of the trigger post is fitted with a base plate, which is fixedly connected to the support platform. The base plate and the top plate are horizontally arranged, and the cross-section of the base plate is a continuous wavy line structure. The structures of the base plate and the top plate are matched, and the gap between the base plate and the top plate forms a cavity. The inner diameter of the cavity matches the outer diameter of the trigger post.

[0021] Preferably, a connecting plate is fixedly connected to the top of the spring telescopic plate, and the top of the connecting plate is slidably connected to the top wall of the outer shell. A transmission belt is fixedly connected to the front end of the connecting plate, and a motor spindle is fixedly connected to the shaft of the transmission belt. The motor is fixed in the inner wall of the outer shell.

[0022] A triangular block is fixedly connected to one side of the top wall of the outer casing, and the triangular block is inverted and is set at the same horizontal level as the sealing plate.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. When using this device, the detection mechanism can first detect the air tightness of the valve core body on the bottom column, and can also detect the air tightness of the groove on the valve core body to determine whether there are cracks or leaks in the groove wall.

[0025] 2. When using this device, the clamping plate, upper limit groove and lower limit groove make it convenient for the operator to install the valve core body in the middle of the clamping plate and clamp the valve core body, making it convenient for the operator to use.

[0026] 3. When using this device, the continuous wave-shaped structure of the passage cavity allows the bottom column to be separated from the valve core body after each test, and the bottom column to be tilted. If there is a problem with the test, it will fall off, thus enabling material to be returned to different positions based on different test results. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall front-view three-dimensional structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the overall side view of the present invention;

[0029] Figure 3 This is a schematic diagram of the three-dimensional structure of the support platform in this invention. Figure 1 ;

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the support platform in this invention. Figure 2 ;

[0031] Figure 5 This is a schematic diagram of the installation structure of the detection mechanism in this invention;

[0032] Figure 6 This is a three-dimensional structural diagram of the detection mechanism in this invention;

[0033] Figure 7 This is a schematic cross-sectional view of the detection mechanism in this invention. Figure 1 ;

[0034] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle;

[0035] Figure 9 This is a schematic diagram of the three-dimensional structure of the rotating column in this invention;

[0036] Figure 10 This is a schematic cross-sectional view of the detection mechanism in this invention. Figure 2 ;

[0037] Figure 11 This is a schematic diagram of the clamping plate connection structure in this invention;

[0038] Figure 12 This is a cross-sectional view of the power rod and the limiting rod in this invention;

[0039] Figure 13 For the present invention Figure 12 Enlarged structural diagram at point B.

[0040] In the diagram: 1. Outer shell; 2. First storage box; 3. Second storage box; 4. Third storage box; 5. Testing chamber; 6. Operating port; 7. Support plate; 8. Support platform; 9. Testing mechanism; 91. Support plate; 92. Slide groove; 93. Sliding block; 94. Rotating column; 95. Bottom column; 96. Ventilation pipe; 97. Receiving groove; 98. Valve core body; 99. Sealing disc; 910. Connecting rod; 911. Power rod; 912. Limiting rod; 913. Limiting post; 914. Left hinge rod; 915. Clamping plate; 916. Right hinge rod; 917. Reverse sleeve; 918. Abutment rod; 919. Internal tooth groove; 920. 921. Transmission gear; 922. External tooth groove; 923. Pull rod; 924. Spring telescopic rod; 925. Upper limit groove; 926. Wedge block; 927. Lower limit groove; 928. Receiving sleeve; 929. Sealing block; 930. Push block; 931. Pressing block; 10. Connecting rod; 11. Top plate; 12. Through groove; 13. Spring telescopic plate; 13. Release mechanism; 1301. Trigger post; 1302. Connecting rod; 1303. Limiting protrusion; 1304. Spiral groove; 1305. Arc block; 1306. Base plate; 1307. Through cavity; 14. Connecting plate; 15. Transmission belt; 16. Triangular block. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figure 1-13 The present invention provides a technical solution: a valve core performance test bench, including a shell 1, a first storage box 2 inserted into the inside of the shell 1, a second storage box 3 and a third storage box 4 horizontally arranged on both sides of the first storage box 2, and both the second storage box 3 and the third storage box 4 are inserted into the shell 1, and a test chamber 5 is provided inside the shell 1.

[0043] An operation port 6 is provided on one side of the detection chamber 5. A support plate 7 is fixedly connected to the bottom wall of the detection chamber 5, and a support platform 8 is fixedly connected to the side wall of the support plate 7. A detection mechanism 9 for detecting the valve core is provided on one side of the support platform 8.

[0044] A top plate 10 is fixedly connected to the top of the support platform 8. A passage groove 11 is provided on the outer wall of the top plate 10, and a spring telescopic plate 12 is slidably connected in the inner wall of the passage groove 11. A release mechanism 13 for classifying and unloading valve cores with different test results is provided at the bottom end of the spring telescopic plate 12.

[0045] In this embodiment, as Figure 1 , Figure 5 , Figure 6 , Figure 10 As shown, the detection mechanism 9 includes a support plate 91, the bottom end of the support plate 91 is slidably connected to the bottom end of the support platform 8, and the top end of the support plate 91 is slidably connected to the inner wall of the detection chamber 5. A sliding groove 92 is provided in the inner wall of the support plate 91, and a sliding block 93 is slidably connected in the inner wall of the sliding groove 92. A rotating column 94 is rotatably connected in the inner wall of the sliding block 93. A bottom column 95 is fixedly connected to the front end of the rotating column 94. A ventilation pipe 96 is connected to the bottom end of the bottom column 95. A receiving groove 97 is provided in the inner wall of the bottom column 95, and a valve core body 98 is inserted into the inner wall of the receiving groove 97.

[0046] The top of the valve core body 98 has a slot, which allows the operator to first inflate the bottom column 95 to check for air leakage between the valve core body 98 and the bottom column 95. Then, air can be circulated downwards to inject air into the slot of the valve core body 98 to check for internal processing defects. If there is air leakage, it means that there is a problem with the slot and it cannot be used.

[0047] In this embodiment, as Figure 6 , Figure 7 , Figure 10 and Figure 11 As shown, the detection mechanism 9 also includes a sealing disc 99. The outer wall of the sealing disc 99 is fitted and connected to the inner wall of the bottom column 95. A telescopic connecting rod 910 is fixedly connected to the top of the sealing disc 99, and the top of the connecting rod 910 is fixedly connected to the top of the bearing plate 91. A power rod 911 is fixedly connected to the bottom of the sealing disc 99, and a limiting rod 912 is sleeved on the bottom of the power rod 911. A limiting column 913 is slidably connected to the inner wall of the limiting rod 912. A spring is fixedly connected to the bottom of the power rod 911, and the bottom of the spring is fixedly connected to the inner wall of the limiting column 913. The bottom of the limiting rod 912 is inserted into the slot.

[0048] A left hinge rod 914 is hinged to the outer wall of the limiting rod 912, and a clamping plate 915 is hinged to the front end of the left hinge rod 914. A right hinge rod 916 is hinged to the outer wall of the clamping plate 915, and a reverse sleeve 917 is hinged to the other end of the right hinge rod 916. The reverse sleeve 917 is sleeved on the power rod 911, and a cross-shaped abutment rod 918 is provided on the outer wall of the directional sleeve. The outer wall of the abutment rod 918 is slidably connected to the inner wall of the bottom column 95.

[0049] A rubber plate is fixedly connected to the side wall of the clamping plate 915, so that when the operator controls the upward movement of the reverse sleeve 917, the right hinge rod 916 pulls several clamping plates 915 together to clamp the outer wall of the valve core body 98.

[0050] In this embodiment, as Figure 12 As shown, a vent valve is provided on the bottom wall of the limit rod 912, and the top and bottom of the vent valve are respectively connected to an air inlet pipe and an air outlet. The bottom of the air outlet is connected to the empty slot, so that gas can be pumped from the limit rod 912 into the empty slot in the valve core body 98 for secondary detection.

[0051] In this embodiment, as Figure 7 , Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown, the detection mechanism 9 also includes an inner tooth groove 919, which is formed in the inner wall of the reverse sleeve 917, and a transmission gear 920 is meshed on the inner tooth groove 919. An outer tooth groove 921 is meshed on the side of the transmission gear 920 away from the inner tooth groove 919, and the outer tooth groove 921 is formed on the outer wall of the power rod 911.

[0052] The bottom end of the power rod 911 is rotatably connected to a pull rod 922, and the bottom end of the pull rod 922 is fixedly connected to a spring telescopic rod 923. The bottom end of the pull rod 922 is inserted into an upper limit groove 924 with a figure-eight structure, and a wedge block 925 is fixedly connected to one side of the top groove wall of the upper limit groove 924. The bottom end of the upper limit groove 924 is connected to a lower limit groove 926. Both the upper limit groove 924 and the lower limit groove 926 are opened on the limit post 913, and the lower limit groove 926 is set with a W-shaped structure. The wedge block 925 with the same structure is fixedly connected to the center groove wall of the lower limit groove 926.

[0053] A hollow receiving sleeve 927 is fixedly connected to the outer wall of the limiting rod 912, and a sealing block 928 is slidably connected to the inner wall of the receiving sleeve 927. A push block 929 is fixedly connected to the top of the sealing block 928, and the side of the push block 929 has an inclined surface. A pressing block 930 is attached to the top of the push block 929, and an insertion rod 931 is fixedly connected to the side wall of the pressing block 930. The outer wall of the insertion rod 931 is inserted into the outer wall of the limiting post 913. The outer wall of the connecting rod 931 has an upward-facing inclined surface. The top of the connecting rod 931 has a machined protrusion that slides on the top wall of the receiving sleeve 927. A return spring is provided between the protrusion and the inner wall of the receiving sleeve 927. When there is air leakage, the air pressure in the space between the bottom column 95 and the sealing plate 99 increases. At this time, because the bottom end of the power rod 911 is provided with a pull rod 922, the spring telescopic rod 923 in the connecting rod 931 is locked in the lower limit groove 9. In step 26, as the air pressure continues to increase, the pressure inside the receiving sleeve 927 remains constant, while the pressure outside the receiving sleeve 927 increases. This causes the sealing block 928 inside the receiving sleeve 927 to be pushed upwards. The push block 929 on the sealing block 928 contacts the bottom end of the pressing block 930, pushing the pressing block 930 to move the insertion rod 931 to the left, removing the pulling rod 922 from the limiting post 913. At this point, since the limiting post 913 is no longer restricted, the sealing disc 99 continues to be compressed, sealing... The sealing plate 99 drives the power rod 911 to rise. The power rod 911 drives the limit post 913 to rise through the plug rod 931. At this time, the power rod 911 rises, and the external tooth groove 921 on the power rod 911 pulls the transmission gear 920 forward. At the same time, it is also rotating, which can push the reverse sleeve 917 to move downward. The downward movement of the reverse sleeve 917 can push the clamping plate 915 to unfold through the right hinge rod 916, releasing the restriction on the valve core body 98, which falls into the bottom post 95.

[0054] In this embodiment, as Figure 12 and Figure 13As shown, the inclined edge of the wedge block 925 in the upper limit groove 924 faces left, and the inclined plate of the wedge block 925 in the lower limit groove 926 faces right. This causes the power rod 911 to move downwards, compressing the spring. The pulling rod 922 on the power rod 911 slides in the upper limit groove 924 via the spring extension rod 923 and then slides into the lower limit groove 926. At this point, the power rod 911 is no longer pressed down, and it rises via the spring. The spring in the pulling rod 922 extends... The telescopic rod 923 moves upward along the right end of the lower limit groove 926, retracts itself through the inclined surface of the wedge block 925, and moves to the center of the lower limit groove 926, where it hooks against the groove wall at the center of the lower limit groove 926. At this time, due to the setting of the wedge block 925, when the operator presses down the power pull rod again, the other end of the wedge block 925 has no inclined surface, thus guiding the spring telescopic rod 923 to continue moving along the left end of the lower limit groove 926, so that the position change of the control sealing disc 99 can be realized.

[0055] In this embodiment, as Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the release mechanism 13 includes a trigger post 1301. The top end of the trigger post 1301 is inserted into the bottom end of the spring telescopic plate 12. The front end of the trigger post 1301 is fixedly connected to a plurality of equally spaced ring-shaped plug rods 1302. The front ends of the plurality of plug rods 1302 are all inserted into the sliding block 93. The front ends of the plug rods 1302 are fixedly connected to a compression spring, and the ends of the compression springs are fixedly connected to the inner wall of the sliding block 93.

[0056] A limiting protrusion 1303 is fixedly connected to the inner wall of the trigger post 1301, and the inner wall of the trigger post 1301 is slidably connected to the inner wall of the rotating post 94. A spiral groove 1304 is provided on the inner wall of the trigger post 1301, and the inner diameter of the spiral groove 1304 matches the outer diameter of the limiting protrusion 1303. An arc-shaped block 1305 is attached to the rear end of the trigger post 1301, and the arc-shaped block 1305 is fixedly connected to the support platform 8.

[0057] The bottom end of the trigger post 1301 is fitted with a base plate 1306, which is fixedly connected to the support platform 8. The base plate 1306 and the top plate 10 are horizontally arranged, and the cross-section of the base plate 1306 is a continuous wavy line structure. The structures of the base plate 1306 and the top plate 10 are matched, and the gap between the base plate 1306 and the top plate 10 forms a cavity 1307. The inner diameter of the cavity 1307 matches the outer diameter of the trigger post 1301. As the bottom post 95 gradually moves towards the lowest end of the cavity 1307, the trigger post 1301 moves downward. The trigger post 1301 is driven by the sliding block 93. The bottom column 95 moves up and down on the support plate 91, and the bottom column 95 separates from the upper sealing plate 99, releasing pressure. The trigger column 1301 passes through the arc block 1305, and the trigger column 1301 is pushed forward by the force. The limiting protrusion 1303 in the trigger column 1301 moves in the spiral groove 1304 on the outer wall of the rotating column 94, causing the rotating column 94 to rotate. The plug rod 1302 on the trigger column 1301 moves inside the rotating column 94 and squeezes the spring. At this time, the rotation of the rotating column 94 can drive the bottom column 95 to rotate. The rotation of the bottom column 95 pours out the valve core body 98 that has fallen inside and falls into the second storage box 3.

[0058] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a connecting plate 14 is fixedly connected to the top of the spring telescopic plate 12, and the top of the connecting plate 14 is slidably connected to the top wall of the outer shell 1. A transmission belt 15 is fixedly connected to the front end of the connecting plate 14, and a motor spindle is fixedly connected to the shaft of the transmission belt 15. The motor is fixed in the inner wall of the outer shell 1.

[0059] A triangular block 16 is fixedly connected to one side of the top wall of the outer casing 1. The triangular block 16 is inverted and is set at the same level as the sealing disc 99. When the sealing disc 99 contacts the triangular block 16, the sealing disc 99 moves down. When the sealing disc 99 moves down, the pulling rod 922 in the power rod 911 at the lower end of the sealing disc 99 moves from the lower limit groove 926 to the upper limit groove 924. The power rod 911 moves up through the spring reset, thereby actuating the transmission gear 920 to drive the reverse sleeve 917 to move down, pushing the clamping plate 915 to loosen, thus realizing the unloading of the valve core body 98 that has finally passed the test.

[0060] The method of use and advantages of this invention: The working process of this valve core performance test bench is as follows:

[0061] like Figures 1 to 13As shown, when the operator presses down on the sealing disc 99, the sealing disc 99 pushes the power rod 911 downward. At this time, the spring telescopic rod 923 in the pulling rod 922 slides from the right end of the upper limit groove 924 into the right end of the lower limit groove 926. When the spring telescopic rod 923 moves to the lowest end of the right end of the lower limit groove 926, the sealing disc 99 also moves to the maximum distance. At this time, the sealing disc 99 can be released, and the power rod 911 pushes the sealing disc 99 to reset through the spring reset. The spring telescopic rod 923 squeezes the side wall of the wedge block 925, and the spring telescopic rod 923 can move to the left. The spring telescopic rod 923 is in contact with the top wall of the highest point of the lower limit groove 926, which restricts the position of the spring telescopic rod 923, thereby restricting the position of the sealing disc 99.

[0062] Simultaneously, during the pressing of the sealing disc 99, the operator places the valve core body 98 on the side of the clamping plate 915. As the sealing disc 99 moves downward, the external tooth groove 921 of the power rod 911 pushes the power gear forward and rotates. The power gear, in turn, moves the reverse sleeve 917 upward. The upward movement of the reverse sleeve 917 pulls the right hinge rod 916 on one side to rotate counterclockwise. The right hinge rod 916 drives the clamping plate 915 to clamp the valve core body 98. Because the clamping plate 915 has a rubber plate on its side wall, when the power rod 911 slightly returns to its original position and rises, the elasticity of the rubber plate can wrap around the valve core body 98 without affecting the clamping effect.

[0063] Then the motor is started. The motor drives the connecting plate 14 forward through the transmission belt 15. The connecting plate 14 pulls the spring telescopic plate 12 forward. The spring telescopic plate 12 pulls the trigger post 1301. The trigger post 1301 synchronously drives the rotating post 94 inside it forward. Then the rotating post 94 can drive the bearing plate 91 to slide forward in the detection chamber 5. At this time, since the gap between the top plate 10 and the bottom plate 1306 forms a continuous wave-shaped cavity 1307, when the trigger post 1301 moves from the lowest end of the cavity 1307 to the highest point, the bottom post 95 moves up and inserts into the sealing plate 99.

[0064] Next, gas is introduced through the vent pipe 96 and enters the receiving groove 97. If the outer diameter of the valve core body 98 matches, the gas in the receiving groove 97 will not leak out. If leakage occurs, it indicates a problem with the outer diameter of the valve core body 98. At this time, the internal air pressure of the bottom column 95 increases, and the increased pressure continuously pushes the sealing disc 99. However, because the spring telescopic rod 923 is stuck on the inner wall of the lower limit groove 926, the sealing disc 99 cannot rise. At this time, the internal pressure of the bottom column 95 continues to increase, while the pressure in the receiving sleeve 927 remains unchanged, thereby pushing the sealing block 928 upward. The sealing block 928 rises, and the push block 92 on the sealing block 928... 9. The extrusion block 930 is squeezed, and the extrusion block 930 is pulled to the left to pull the plug rod 931. The plug rod 931 is pulled out from the limiting post 913, and the limiting post 913 is no longer restricted. Then, through the setting of the pulling rod 922, the limiting post 913 and the sealing plate 99 are pulled up together. At this time, the power rod 911 and the sealing plate 99 rise. The external tooth groove 921 on the outer wall of the power rod 911 drives the transmission gear 920 to rotate. The transmission gear 920 pushes the reverse sleeve 917 to move down. The reverse sleeve 917 moves down and pushes the right hinge rod 916. The right hinge rod 916 pushes the clamping plate 915 to unfold, releasing the valve core body 98. The valve core body 98 is released and falls into the bottom post 95.

[0065] As the bottom post 95 gradually moves toward the lowest end of the cavity 1307, the trigger post 1301 moves downward. The trigger post 1301 drives the bottom post 95 to move up and down on the support plate 91 through the sliding block 93. The bottom post 95 separates from the upper sealing plate 99, releasing pressure. The trigger post 1301 passes through the arc block 1305. The trigger post 1301 is pushed forward by the force. The limiting protrusion 1303 in the trigger post 1301 moves in the spiral groove 1304 on the outer wall of the rotating post 94, causing the rotating post 94 to rotate. The plug rod 1302 on the trigger post 1301 moves inside the rotating post 94 and squeezes the spring.

[0066] At this time, the rotation of the rotating column 94 can drive the bottom column 95 to rotate. The rotation of the bottom column 95 will pour out the valve core body 98 that has fallen inside and drop it into the second storage box 3.

[0067] Similarly, if there are no problems in the first ventilation test, gas can be forced into the empty groove in the valve core body 98 through the air inlet pipe. The air pressure in the empty groove increases. If there are processing defects in the groove wall, it will cause gas leakage, which will cause the air pressure inside the bottom column 95 to increase again. As described above, the limiting column 913 is unlocked again through the sealing block 928, and the reverse sleeve 917 is pushed in the opposite direction to open the clamping plate 915, releasing the valve core body 98 again. During the downward movement of the bottom column 95, it is flipped by the arc block 1305 to unload and fall into the first storage box 2.

[0068] Finally, after the first two ventilation tests are passed, when the support plate 91 drives the bottom column 95 past the triangular block 16, the triangular block 16 presses down on the sealing disc 99. The sealing disc 99 is under pressure, and the power rod 911 pushes the spring telescopic rod 923 down. Due to the inclined surface of the wedge block 925, the side wall of the spring telescopic rod 923 contacts the end of the wedge block 925 that does not have an inclined surface, guiding the spring telescopic rod 923 to move to the left. The spring telescopic rod 923 slides from the left end of the lower limit groove 926 into the top of the upper limit groove 924. Similarly, the rising of the sealing disc 99 and the power rod 911 can push the reverse sleeve 917 down in the opposite direction, pushing the clamping plate 915 to open and release the valve core body 98. The valve core body 98 falls back into the bottom column 95. As mentioned above, when the bottom column 95 rotates, the valve core bodies 98 that are not in problem can be poured into the third storage box 4 to achieve classified material release.

[0069] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A valve core performance test bench, comprising a shell (1), a first storage box (2) is inserted in the interior of the shell (1), a second storage box (3) and a third storage box (4) are horizontally arranged on both sides of the first storage box (2) respectively, and the second storage box (3) and the third storage box (4) are both inserted with the shell (1), characterized in that: The inside of the shell (1) is provided with a detection bin (5); One side of the detection bin (5) is provided with an operation opening (6), the bottom wall of the detection bin (5) is fixedly connected with a supporting plate (7), and the side wall of the supporting plate (7) is fixedly connected with a bearing table (8), one side of the bearing table (8) is provided with a detection mechanism (9) for detecting the valve core; The top end of the bearing table (8) is fixedly connected with a top plate (10), the outer wall of the top plate (10) is provided with a through groove (11), the inner wall of the through groove (11) is slidably connected with a spring telescopic plate (12), and the bottom end of the spring telescopic plate (12) is provided with a release mechanism (13) for classifying and discharging valve cores with different detection results; The top end of the spring telescopic plate (12) is fixedly connected with a connecting plate (14), the top end of the connecting plate (14) is slidably connected with the top wall of the shell (1), and the front end of the connecting plate (14) is fixedly connected with a transmission belt (15); The detection mechanism (9) comprises a bearing plate (91), the bottom end of the bearing plate (91) is slidably connected with the bottom end of the bearing table (8), the top end of the bearing plate (91) is slidably connected with the inner wall of the detection bin (5), the inner wall of the bearing plate (91) is provided with a sliding groove (92), the inner wall of the sliding groove (92) is slidably connected with a sliding block (93), and the inner wall of the sliding block (93) is rotatably connected with a rotating column (94), the front end of the rotating column (94) is fixedly connected with a bottom column (95), the bottom end of the bottom column (95) is connected with an air passage (96), the inner wall of the bottom column (95) is provided with a containing groove (97), and the inner wall of the containing groove (97) is inserted with a valve core body (98); The top end of the valve core body (98) is provided with a hollow groove; The detection mechanism (9) further comprises a sealing disc (99), the outer wall of the sealing disc (99) is connected with the inner wall of the bottom column (95), the top end of the sealing disc (99) is fixedly connected with a connecting rod (910) of the telescopic structure, the top end of the connecting rod (910) is fixedly connected with the top end of the bearing plate (91), the bottom end of the sealing disc (99) is fixedly connected with a power rod (911), the bottom end of the power rod (911) is sleeved with a limiting rod (912), the inner wall of the limiting rod (912) is slidably connected with a limiting column (913), the bottom end of the power rod (911) is fixedly connected with a spring, the bottom end of the spring is fixedly connected with the inner wall of the limiting column (913), and the bottom end of the limiting rod (912) is inserted into the hollow groove; The release mechanism (13) comprises a trigger column (1301), the top end of the trigger column (1301) is inserted into the bottom end of the spring telescopic plate (12), the front end of the trigger column (1301) is fixedly connected with a plurality of plug-in rods (1302) arranged in an equidistant annular array, the front end of each of the plurality of plug-in rods (1302) is inserted into the sliding block (93), the front end of the plug-in rod (1302) is fixedly connected with a compression spring, and the end of the compression spring is fixedly connected with the inner wall of the sliding block (93). The inner wall of the trigger column (1301) is fixedly connected with a limiting protrusion (1303), and the inner wall of the trigger column (1301) is slidably connected with the inner wall of the rotating column (94), and a spiral groove (1304) is formed in the inner wall of the trigger column (1301), the inner diameter of the spiral groove (1304) matches the outer diameter of the limiting protrusion (1303), the rear end of the trigger column (1301) is attached with an arc-shaped block (1305), and the arc-shaped block (1305) is fixedly connected to the bearing table (8); The bottom end of the trigger column (1301) is attached with a bottom plate (1306), the bottom plate (1306) is fixedly connected to the bearing table (8), the bottom plate (1306) and the top plate (10) are horizontally arranged, and the cross section of the bottom plate (1306) is arranged in a continuous wavy line structure, the structure of the bottom plate (1306) matches that of the top plate (10), and the gap between the bottom plate (1306) and the top plate (10) forms a through cavity (1307), and the inner diameter of the through cavity (1307) matches the outer diameter of the trigger column (1301).

2. A valve trim performance test bench as defined in claim 1, characterized in that: The outer wall of the limiting rod (912) is hingedly connected with a left hinge rod (914), the front end of the left hinge rod (914) is hingedly connected with a clamping plate (915), the outer wall of the clamping plate (915) is hingedly connected with a right hinge rod (916), the other end of the right hinge rod (916) is hingedly connected with a reverse sleeve (917), the reverse sleeve (917) is sleeved on the power rod (911), and the outer wall of the reverse sleeve is provided with a cross-shaped resisting rod (918), and the outer wall of the resisting rod (918) is slidably connected with the inner wall of the bottom column (95).

3. A valve trim performance test bench as defined in claim 2, characterized in that: The bottom wall of the limiting rod (912) is provided with a ventilation valve, the top end and the bottom end of the ventilation valve are respectively communicated with an air inlet pipe and an air outlet, and the bottom end of the air outlet is communicated with the air slot.

4. A valve trim performance test bench as defined in claim 3, wherein: The detection mechanism (9) further comprises an inner tooth groove (919) formed in the inner wall of the reverse sleeve (917), and the inner tooth groove (919) is engaged with a transmission gear (920), and the side, away from the inner tooth groove (919), of the transmission gear (920) is engaged with an outer tooth groove (921) formed in the outer wall of the power rod (911); The bottom end of the power rod (911) is rotatably connected with a pulling rod (922), the bottom end of the pulling rod (922) is fixedly connected with a spring telescopic rod (923), the bottom end of the pulling rod (922) is inserted with an eight-shaped upper limiting groove (924), one side of the top groove wall of the upper limiting groove (924) is fixedly connected with a wedge-shaped block (925), the bottom end of the upper limiting groove (924) is communicated with a lower limiting groove (926), the upper limiting groove (924) and the lower limiting groove (926) are both formed in the limiting column (913), the lower limiting groove (926) is arranged in a W-shaped structure, and the center groove wall of the lower limiting groove (926) is fixedly connected with a wedge-shaped block (925) which is the same in structure. The outer wall of the limiting rod (912) is fixedly connected with a hollow containing sleeve (927), the inner wall of the containing sleeve (927) is sealingly and slidably connected with a sealing block (928), the top end of the sealing block (928) is fixedly connected with a push block (929), the side surface of the push block (929) is provided with an inclined surface, the top end of the push block (929) is abuttingly connected with an extrusion block (930), the side wall of the extrusion block (930) is fixedly connected with an inserting rod (931), the outer wall of the inserting rod (931) is insertedly arranged with the outer wall of the limiting column (913), the outer wall of the inserting rod (931) is provided with an inclined surface with the inclined surface facing upward, the top end of the inserting rod (931) is provided with a protrusion formed by machining, the protrusion is slidably connected with the top wall of the containing sleeve (927), and a reset spring is arranged between the protrusion and the inner wall of the containing sleeve (927).

5. A valve trim performance test bench as defined in claim 4, wherein: The inclined edge of the wedge-shaped block (925) in the upper limiting groove (924) is arranged to the left, and the inclined edge of the wedge-shaped block (925) in the lower limiting groove (926) is arranged to the right.

6. A valve trim performance test bench as defined in claim 2, wherein: The transmission belt (15) is fixedly connected with a motor spindle at the shaft center, and the motor is fixed in the inner wall of the shell (1); The outer shell (1) is fixedly connected with a triangular block (16) on one side of the top wall, the triangular block (16) is arranged upside down, and the triangular block (16) is arranged at the same horizontal position as the sealing disc (99).

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