A factory valve detection and screening and sorting device

Abstract

The application discloses a factory valve detection and screening classification equipment and relates to the technical field of valve detection. The application comprises a valve to be detected, an operation table, a placing sealing table, an air tightness detection part, a positioning mechanism, a good product discharging mechanism and a defective product discharging mechanism. The top end of the operation table is provided with a movable groove, and the placing sealing table is arranged in the movable groove and used for placing the valve to be detected. The air tightness detection part is arranged in the placing sealing table and used for detecting whether the air tightness of the valve to be detected is qualified. The upper side of the placing sealing table is provided with a second back-shaped frame, and the positioning mechanism is used for connecting the placing sealing table and the second back-shaped frame. The first back-shaped frame is slidably connected in the movable groove and arranged on the upper side of the second back-shaped frame. The good product discharging mechanism is arranged between the second back-shaped frame and the first back-shaped frame and used for classifying and discharging the valve to be detected after the valve to be detected is detected as a good product. The defective product discharging mechanism is arranged between the second back-shaped frame and the first back-shaped frame and used for classifying and discharging the valve to be detected after the valve to be detected is detected as a defective product. The application improves the degree of automation and reduces the work burden of the staff.

Description

Technical Field

[0001] This invention belongs to the field of valve testing technology, and in particular relates to a device for testing, screening and classifying valves before they leave the factory. Background Technology

[0002] Valves are used in pipelines to control the flow of various types of fluids, such as air, water, steam, various corrosive media, mud, oil, liquid metals and radioactive media. Therefore, the airtightness requirements of valves are very high. We need to distinguish and screen valves that meet the airtightness requirements from those that do not.

[0003] Existing valve testing equipment requires manual loading of valves, followed by testing, manual observation of the test results, and manual sorting and unloading of qualified and unqualified valves. The whole process is cumbersome and has a low degree of automation. Therefore, the overall valve testing, screening, and sorting are inefficient. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for testing, screening and classifying valves before they leave the factory. This technical solution improves the level of automation, reduces the workload of staff, and solves existing technical problems.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] A valve testing and sorting device includes valves to be tested, an operating table, a sealing platform with a movable groove at the top of the operating table for placing the valves to be tested, an airtightness testing unit located within the sealing platform for testing the airtightness of the valves to be tested, a positioning mechanism connecting the sealing platform and the second forming frame, a good product discharge mechanism with a first forming frame slidably connected within the movable groove and positioned above the second forming frame, the good product discharge mechanism located between the second and first forming frames for sorting and discharging valves to be tested after they have been tested as good products, and a defective product discharge mechanism located within the movable groove for sorting and discharging valves to be tested after they have been tested as defective products.

[0007] Optionally, the airtight detection part comprises a mounting plate fixedly connected to the side end of the operation table, two electric push rods are fixedly connected in the mounting plate, the output ends of the two electric push rods are fixedly connected with the same sealing cover, the valve to be detected is arranged between the sealing cover and the placing sealing table, an air pump is fixedly connected in the sealing cover, a second groove is arranged in the placing sealing table, a piston plate is slidably connected in the second groove, a connecting rod is fixedly connected to the bottom end of the piston plate, a third groove is arranged in the placing sealing table, the connecting rod is downwardly movably penetrated into the third groove, a connecting plate is fixedly connected to the bottom end of the connecting rod, an induction switch is arranged on the bottom wall of the third groove, a positioning spring is fixedly connected to the bottom end of the piston plate and arranged in the second groove, and the positioning spring is sleeved on the circumferential surface of the connecting rod.

[0008] Optionally, the placing sealing table and the sealing cover are both provided with sealing pads.

[0009] Optionally, the good product discharging mechanism comprises a fourth groove arranged in the first return-shaped frame, a second reciprocating screw rod is rotatably connected in the fourth groove, a second driving motor is fixedly connected to the side end of the first return-shaped frame, the second driving motor is connected with the second reciprocating screw rod through a shaft coupling, a threaded block is threadedly connected to the circumferential surface of the second reciprocating screw rod, a support rod is movably hinged to the bottom end of the threaded block through a hinge shaft, the side end of the support rod is movably hinged to the top end of a second return-shaped frame, the second return-shaped frame is rotatably connected to one side of the bottom end of the first return-shaped frame, and a good product discharging opening in communication with the movable groove is arranged in the operation table.

[0010] Optionally, the positioning mechanism comprises a fixed block fixedly connected to the bottom end of the second return-shaped frame, the placing sealing table is rotatably connected to one side of the bottom end of the second return-shaped frame, a first groove is arranged in the placing sealing table, a clamping spring is fixedly connected in the first groove, a trapezoidal clamping block is fixedly connected to the side end of the clamping spring, a clamping groove is arranged in the fixed block, the trapezoidal clamping block and the clamping groove are clamped, and a buffer gap is arranged between the placing sealing table and the fixed block.

[0011] Optionally, the defective product discharging mechanism comprises a first reciprocating screw rod rotatably connected in the movable groove, a first driving motor is fixedly connected to the side end of the operation table, the first driving motor is connected with the first reciprocating screw rod through a shaft coupling, the first return-shaped frame is threadedly connected to the circumferential surface of the first reciprocating screw rod, an extrusion block matched with the clamping groove is fixedly connected to the side wall of the movable groove, the side end of the extrusion block is in contact with the trapezoidal clamping block, and a defective product discharging opening in communication with the movable groove is arranged in the operation table.

[0012] Optionally, a reset plate is fixedly connected to the bottom wall of the movable groove, and the top end of the reset plate and the bottom end of the placing sealing table are kept horizontal.

[0013] Optionally, the side end of the operation platform is fixedly connected with a good product receiving hopper for receiving good products and a substandard product receiving hopper for receiving substandard products, and soft pads are arranged in the good product receiving hopper and the substandard product receiving hopper.

[0014] The embodiments of the present application have the following beneficial effects:

[0015] In the technical solution, the staff only needs to place the valve to be tested on the placing sealing table, and can perform the air tightness detection and the classification work after the detection, without manually observing the detection result, and when the equipment detects that the valve to be tested is qualified, the valve to be tested is discharged from one side, and when the equipment detects that the valve to be tested is unqualified, the valve to be tested is discharged from the other side, thereby simultaneously solving the two steps of screening and classification and discharging, improving the automation degree, and reducing the work burden of the staff.

[0016] Of course, implementing any product of the present application does not necessarily need to achieve all the advantages described above at the same time. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0018] Figure 1 It is a front view of the present application;

[0019] Figure 2 It is a sectional view of the present application;

[0020] Figure 3 It is a first partial sectional view of the present application;

[0021] Figure 4 It is a partial perspective view of the present application;

[0022] Figure 5 It is a second partial sectional view of the present application;

[0023] Figure 6 It is an unfolding schematic view of good product discharging in the present application;

[0024] Figure 7 It is an unfolding schematic view of substandard product discharging in the present application.

[0025] In the figure: 1, operation table; 2, movable groove; 3, first reciprocating screw rod; 4, first return frame; 5, mounting plate; 6, electric push rod; 7, sealing cover; 8, valve to be tested; 9, good product discharge port; 10, substandard product discharge port; 11, good product receiving hopper; 12, substandard product receiving hopper; 13, first driving motor; 14, second return frame; 15, second driving motor; 16, placing sealing table; 17, reset plate; 18, fixed block; 19, clamping groove; 20, trapezoidal clamping block; 21, first recess; 22, clamping spring; 23, second recess; 24, piston plate; 25, positioning spring; 26, connecting rod; 27, connecting plate; 28, third recess; 29, inductive switch; 30, air pump; 31, fourth recess; 32, second reciprocating screw rod; 33, threaded block; 34, support rod; 35, extrusion block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0027] In the description of the present application, it should be understood that the terms "opening", "upper", "middle", "length", "inner" and the like indicate the orientation or positional relationship, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the referred components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0028] In order to keep the following description of the embodiments of the present application clear and concise, the present application omits the detailed description of known functions and known components.

[0029] Embodiment one

[0030] Please refer to Figures 1-7As shown, in the embodiment, a factory valve detection and screening classification equipment is provided, which comprises a valve to be tested 8, and an operation table 1; a placing sealing table 16 is arranged in the top end of the operation table 1 and used for placing the valve to be tested 8; an air tightness detection part is arranged in the placing sealing table 16 and used for detecting whether the air tightness of the valve to be tested 8 is qualified; a positioning mechanism is arranged on the upper side of the placing sealing table 16 and used for connecting the placing sealing table 16 and a second back-shaped frame 14; a good product discharging mechanism is slidably connected with a first back-shaped frame 4 in the movable groove 2, the first back-shaped frame 4 is arranged on the upper side of the second back-shaped frame 14, and the good product discharging mechanism is arranged between the second back-shaped frame 14 and the first back-shaped frame 4 and used for classifying and discharging the valve to be tested 8 after detecting that the valve to be tested 8 is a good product; a defective product discharging mechanism is arranged in the movable groove 2 and used for classifying and discharging the valve to be tested 8 after detecting that the valve to be tested 8 is a defective product; the staff only needs to place the valve to be tested 8 on the placing sealing table 16, and then can perform air tightness detection and classification work after detection, without the need for manual observation of the detection result; when the equipment detects that the valve to be tested 8 is qualified, the valve to be tested 8 is discharged from one side; when the equipment detects that the valve to be tested 8 is unqualified, the valve to be tested 8 is discharged from the other side, thereby simultaneously solving the two steps of screening classification and discharging, improving the degree of automation, and reducing the work burden of the staff

[0031] In one aspect of the embodiment, as shown in Figure 2 and Figure 3 As shown, the air tightness detection part comprises a mounting plate 5 fixedly connected to the side end of the operation table 1, two electric push rods 6 fixedly connected in the mounting plate 5, the same sealing cover 7 fixedly connected to the output ends of the two electric push rods 6, the valve to be tested 8 arranged between the sealing cover 7 and the placing sealing table 16, the air pump 30 fixedly connected in the sealing cover 7, the second recess 23 arranged in the placing sealing table 16, the piston plate 24 slidably connected in the second recess 23, the connecting rod 26 fixedly connected to the bottom end of the piston plate 24, the third recess 28 arranged in the placing sealing table 16, the connecting rod 26 downwardly and movably penetrating into the third recess 28, the connecting plate 27 fixedly connected to the bottom end of the connecting rod 26, the induction switch 29 arranged on the bottom wall of the third recess 28, the positioning spring 25 fixedly connected to the bottom end of the piston plate 24 and fixedly connected in the second recess 23, and the positioning spring 25 sleeved on the circumferential surface of the connecting rod 26; the placing sealing table 16 and the sealing cover 7 are both provided with sealing pads;

[0032] After the staff places the valve 8 to be tested on the upper side of the placement sealing table 16, the electric push rod 6 is started to drive the sealing cover 7 to move downward, and the sealing cover 7 and the placement sealing table 16 cooperate to fix and seal the two ends of the valve 8 to be tested. At this time, the air pump 30 is started to inflate the valve 8 to be tested. If the air tightness of the valve 8 to be tested meets the standard, the gas generated by the air pump 30 will increase the air pressure in the valve 8 to be tested, which will press the piston plate 24 downward, the piston plate 24 will press the positioning spring 25 downward, and the piston plate 24 will drive the connecting plate 27 to move downward through the connecting rod 26, the connecting plate 27 will press the induction switch 29, and the equipment can determine that the valve 8 to be tested is a good product with good air tightness.

[0033] If the air tightness of the valve 8 to be tested does not meet the standard, air leakage will occur, the air pressure in the valve 8 to be tested will not change significantly, the piston plate 24 cannot move downward, and the induction switch 29 will not be started within a certain time of the air pump 30 generating gas, so the equipment determines that the valve 8 to be tested is a defective product with poor air tightness.

[0034] In one aspect of the embodiment, as shown in Figure 3 , Figure 5 and Figure 6 , the good product discharging mechanism includes a fourth groove 31 opened in the first return frame 4, a second reciprocating screw rod 32 is rotationally connected in the fourth groove 31, a second driving motor 15 is fixedly connected to the side end of the first return frame 4, the second driving motor 15 is connected to the second reciprocating screw rod 32 through a shaft coupling, a threaded block 33 is threadedly connected to the circumferential surface of the second reciprocating screw rod 32, a support rod 34 is movably hinged to the bottom end of the threaded block 33 through a hinge shaft, the side end of the support rod 34 is movably hinged to the top end of the second return frame 14, the second return frame 14 is rotationally connected to one side of the bottom end of the first return frame 4, and a good product discharging port 9 is opened in the operation table 1 and communicates with the movable groove 2; the second driving motor 15 is started to drive the second reciprocating screw rod 32 to rotate, the second reciprocating screw rod 32 drives the threaded block 33 to move in position, the threaded block 33 drives the position of the end of the support rod 34 to move, the position of the end of the support rod 34 moves to drive the second return frame 14 and the placement sealing table 16 to rotate, so that the placement sealing table 16 loses support for the valve 8 to be tested, and the valve 8 to be tested is discharged from the good product discharging port 9. The second driving motor 15 drives the threaded block 33 to move back and forth to form, after the valve 8 to be tested is discharged, the placement sealing table 16 and the second return frame 14 are reset.

[0035] Example Two

[0036] Based on the improvement of example one: refer to the attachedFigure 3 And Figure 7 The positioning mechanism comprises a fixed block 18 fixedly connected to the bottom end of the second return frame 14, the placement sealing table 16 is rotatably connected to one side of the bottom end of the second return frame 14, the placement sealing table 16 is provided with a first recess 21, the first recess 21 is fixedly connected with a clamping spring 22, the side end of the clamping spring 22 is fixedly connected with a trapezoidal clamping block 20, the fixed block 18 is provided with a clamping groove 19, the trapezoidal clamping block 20 and the clamping groove 19 are clamped, and a buffer gap is arranged between the placement sealing table 16 and the fixed block 18; the buffer gap provides a buffer for the rotation of the placement sealing table 16, so as to prevent the situation of being stuck; the defective product discharging mechanism comprises a first reciprocating screw rod 3 rotatably connected in the movable groove 2, the side end of the operating table 1 is fixedly connected with a first driving motor 13, the first driving motor 13 is connected with the first reciprocating screw rod 3 through a shaft coupling, the first return frame 4 is threadedly connected to the circumferential surface of the first reciprocating screw rod 3, the side wall of the movable groove 2 is fixedly connected with a pressing block 35 matched with the clamping groove 19, the side end of the pressing block 35 is in contact with the trapezoidal clamping block 20, and the operating table 1 is provided with a defective product discharging port 10 in communication with the movable groove 2; the bottom wall of the movable groove 2 is fixedly connected with a reset plate 17, and the top end of the reset plate 17 is horizontally arranged with the bottom end of the placement sealing table 16; the air pump 30 is started to inflate the to-be-tested valve 8, the two ends of the to-be-tested valve 8 are sealed, if the air tightness of the to-be-tested valve 8 does not meet the standard, air leakage will occur, the air pressure in the to-be-tested valve 8 does not change significantly, the piston plate 24 cannot move downward, the sensing switch 29 is not started within a certain time of the air pump 30 generating gas, and the equipment judges that the to-be-tested valve 8 is a defective product with air tightness defects. After the sealing cover 7 is lifted by the electric push rod 6, the first driving motor 13 is started to drive the first reciprocating screw rod 3 to rotate, drive the first return frame 4 to move in a reciprocating stroke, drive the second return frame 14 and the placement sealing table 16 to move synchronously, when the first reciprocating screw rod 3 drives the first return frame 4 to move to the rightmost side of the movable groove 2, the pressing block 35 is inserted into the clamping groove 19 to extrude the trapezoidal clamping block 20 out of the clamping groove 19, at this time, one end of the placement sealing table 16 loses the connection with the fixed block 18, and the placement sealing table 16 rotates along the rotation point. The to-be-tested valve 8 falls and is discharged through the defective product discharging port 10 located at the rightmost side in the operating table 1. When the first reciprocating screw rod 3 drives the first return frame 4 to reset, since the bottom end of the reset plate 17 and the placement sealing table 16 is horizontally arranged, the reset plate 17 limits the opened placement sealing table 16, the placement sealing table 16 is extruded to rotate by the reset plate 17, the trapezoidal clamping block 20 is reinserted into the clamping groove 19, and when the first return frame 4 moves back to the initial position, the placement sealing table 16 also restores to the horizontal position.

[0037] Example three

[0038] On the basis of example one: refer to the attachedFigure 2 The side end of the operation table 1 is fixedly connected with a good product receiving hopper 11 for receiving good products and a substandard product receiving hopper 12 for receiving substandard products, and soft pads are arranged in the good product receiving hopper 11 and the substandard product receiving hopper 12, so as to facilitate the receiving of the good products and the substandard products by the to-be-tested valve 8.

[0039] Working principle: After the to-be-tested valve 8 is placed on the upper side of the placing sealing table 16 by the worker, the electric push rod 6 is started to drive the sealing cover 7 to move downward, the sealing cover 7 and the placing sealing table 16 cooperate to fix and seal the two ends of the to-be-tested valve 8, at this time, the air pump 30 is started to inflate the to-be-tested valve 8, and if the air tightness of the to-be-tested valve 8 meets the standard, the gas generated by the air pump 30 will increase the air pressure in the to-be-tested valve 8, and the increase of the air pressure in the to-be-tested valve 8 will press the piston plate 24 downward, the piston plate 24 presses the positioning spring 25 downward, and the piston plate 24 drives the connecting plate 27 to move downward through the connecting rod 26, the connecting plate 27 will press the induction switch 29, and if the induction switch 29 is pressed, the equipment can determine that the to-be-tested valve 8 is a good product with good air tightness, after the electric push rod 6 drives the sealing cover 7 to rise, the second driving motor 15 is started to drive the second reciprocating screw rod 32 to rotate, the second reciprocating screw rod 32 drives the threaded block 33 to move in position, the threaded block 33 drives the position of the end of the supporting rod 34 to move, the position of the end of the supporting rod 34 drives the second back-shaped frame 14 and the placing sealing table 16 to rotate, so that the placing sealing table 16 loses the support of the to-be-tested valve 8, and the to-be-tested valve 8 is discharged from the good product discharge port 9, the second driving motor 15 drives the threaded block 33 to move back and forth, after the to-be-tested valve 8 is discharged, the placing sealing table 16 and the second back-shaped frame 14 are reset;

[0040] By starting the air pump 30, the valve 8 to be tested is inflated, and the two ends of the valve 8 to be tested are sealed. If the valve 8 to be tested itself is not airtight, air leakage will occur, and the air pressure in the valve 8 to be tested will not change significantly, and the piston plate 24 cannot be pressed downward. If the sensing switch 29 is not started within a certain time of the air pump 30 generating gas, the device determines that the valve 8 to be tested has defects in airtightness and is a defective product. After the sealing cover 7 is lifted by the electric push rod 6, the first driving motor 13 is started to drive the first reciprocating lead screw 3 to rotate, driving the first return frame 4 to move in a reciprocating stroke, and the second return frame 14 and the sealing platform 16 are synchronously moved. When the first reciprocating lead screw 3 drives the first return frame 4 to move to the rightmost side of the movable groove 2, the pressing block 35 is inserted into the clamping groove 19 to extrude the trapezoidal clamping block 20 out of the clamping groove 19. At this time, one end of the sealing platform 16 loses the connection with the fixed block 18, and the sealing platform 16 rotates about the rotation point. The valve 8 to be tested falls through the defective product outlet 10 located at the rightmost side of the operation table 1 to be discharged. When the first reciprocating lead screw 3 drives the first return frame 4 to reset, the reset plate 17 and the bottom end of the sealing platform 16 remain horizontal, and the reset plate 17 limits the opened sealing platform 16. The sealing platform 16 is extruded by the reset plate 17 to rotate, and the trapezoidal clamping block 20 is reinserted into the clamping groove 19. When the first return frame 4 moves back to the initial position, the sealing platform 16 also returns to the horizontal position.

[0041] It should be noted that in the description of the present specification, the description such as "first", "second", etc. is only used to distinguish various features, and does not have actual sequence or pointing meaning, and the present application is not limited thereto.

[0042] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A valve testing and screening equipment for factory-shipped valves, comprising valves to be tested (8), characterized in that, Also includes: Control panel (1); A sealing platform (16) is placed in the operating table (1), and a movable groove (2) is provided at the top of the operating table (1). The sealing platform (16) is placed in the movable groove (2) to place the valve (8) to be tested. Air tightness testing unit, which is located in the sealing platform (16) to test whether the air tightness of the valve (8) under test is qualified; The positioning mechanism is provided with a second molded frame (14) on the upper side of the sealing platform (16). The positioning mechanism is used to connect the sealing platform (16) and the second molded frame (14). The good product discharge mechanism is provided with a first forming frame (4) slidably connected in the movable groove (2). The first forming frame (4) is located on the upper side of the second forming frame (14). The good product discharge mechanism is located between the second forming frame (14) and the first forming frame (4) to classify and discharge the valve (8) to be tested after the valve (8) is detected as a good product. The defective product discharge mechanism is located in the movable trough (2) and is used to classify and discharge the valve (8) after it is found to be defective. The good product unloading mechanism includes a fourth groove (31) opened in the first forming frame (4), a second reciprocating screw (32) is rotatably connected in the fourth groove (31), a second drive motor (15) is fixedly connected to the side end of the first forming frame (4), the second drive motor (15) is connected to the second reciprocating screw (32) through a coupling, a threaded block (33) is threadedly connected to the circumferential surface of the second reciprocating screw (32), and the bottom end of the threaded block (33) is movably hinged to a support through a hinge shaft. The support rod (34) is hinged to the top of the second forming frame (14) via a hinge shaft. The position of the end of the support rod (34) moves, driving the second forming frame (14) and the sealing platform (16) to rotate, thereby causing the sealing platform (16) to lose support for the valve (8) to be tested. The second forming frame (14) is rotatably connected to one side of the bottom end of the first forming frame (4). The operating table (1) has a good product outlet (9) that communicates with the movable groove (2). The defective product discharge mechanism includes a first reciprocating screw (3) rotatably connected in the movable groove (2), a first drive motor (13) fixedly connected to the side end of the operating table (1), the first drive motor (13) being connected to the first reciprocating screw (3) via a coupling, the first return frame (4) being threadedly connected to the circumferential surface of the first reciprocating screw (3), an extrusion block (35) matching the snap-fit ​​groove (19) being fixedly connected to the side wall of the movable groove (2), the side end of the extrusion block (35) contacting the trapezoidal snap-fit ​​block (20), extruding the trapezoidal snap-fit ​​block (20) out of the snap-fit ​​groove (19), at which point one end of the sealing platform (16) loses its connection with the fixed block (18), and the sealing platform (16) rotates along the rotation point, and a defective product discharge port (10) connected to the movable groove (2) is provided in the operating table (1).

2. The valve testing and sorting equipment as described in claim 1, characterized in that, The airtightness testing unit includes a mounting plate (5) fixedly connected to the side of the operating table (1). Two electric push rods (6) are fixedly connected inside the mounting plate (5). The output ends of the two electric push rods (6) are fixedly connected to the same sealing cover (7). The valve to be tested (8) is located between the sealing cover (7) and the sealing platform (16). An air pump (30) is fixedly connected inside the sealing cover (7). A second groove (23) is opened inside the sealing platform (16). A piston plate (24) is slidably connected inside the second groove (23). A connecting rod (26) is fixedly connected to the bottom end of the piston plate (24). A third groove (28) is provided in the sealing platform (16). The connecting rod (26) moves downward and passes through the third groove (28). A connecting plate (27) is fixedly connected to the bottom end of the connecting rod (26). An induction switch (29) is provided on the bottom wall of the third groove (28). A positioning spring (25) is fixedly connected to the bottom end of the piston plate (24). The positioning spring (25) is fixedly connected in the second groove (23). The positioning spring (25) is sleeved on the circumferential surface of the connecting rod (26).

3. The valve testing and sorting equipment as described in claim 2, characterized in that, Both the sealing platform (16) and the sealing cover (7) are equipped with sealing gaskets.

4. A valve testing and sorting equipment as described in any one of claims 1-3, characterized in that, The positioning mechanism includes a fixing block (18) fixedly connected to the bottom end of the second forming frame (14), and the placement sealing platform (16) rotatably connected to one side of the bottom end of the second forming frame (14). A first groove (21) is provided in the placement sealing platform (16), and a snap-fit ​​spring (22) is fixedly connected in the first groove (21). A trapezoidal snap-fit ​​block (20) is fixedly connected to the side end of the snap-fit ​​spring (22). A snap-fit ​​groove (19) is provided in the fixing block (18), and the trapezoidal snap-fit ​​block (20) and the snap-fit ​​groove (19) snap together. A buffer gap is provided between the placement sealing platform (16) and the fixing block (18).

5. The valve testing and sorting equipment as described in claim 4, characterized in that, The bottom wall of the movable groove (2) is fixedly connected to a reset plate (17), and the top of the reset plate (17) and the bottom of the sealing platform (16) are kept horizontal.

6. A valve testing and sorting device as described in any one of claims 1-3, characterized in that, The side end of the operating table (1) is fixedly connected to a good product receiving hopper (11) for receiving good products and a defective product receiving hopper (12) for receiving defective products. Both the good product receiving hopper (11) and the defective product receiving hopper (12) are provided with soft pads.

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