A bellows stop valve and detection device

Abstract

The present application relates to a kind of bellows stop valve and detection device.The bellows stop valve and detection device, wherein the bellows stop valve includes top flange, side flange and the inner hole and outer hole arranged in it, the inner hole and outer hole coaxial center are arranged;The detection device of the bellows stop valve in it, for the quality detection of the above-mentioned bellows stop valve, including frame structure, the frame structure is connected with conveying belt body, the surface of the conveying belt body is spaced apart and is provided with slot, valve assembly is placed on the surface of conveying belt body, and the control valve port of valve assembly is communicated with slot, detection assembly is also provided in the frame structure, the detection assembly includes liftable detection shell, the detection shell includes bearing shell, the surface of the bearing shell is connected with clamping portion;The bellows stop valve and detection device, simple structure, convenient operation, flexible use, facilitate valve detection use.

Description

Technical Field

[0001] This invention belongs to the field of valve measurement technology, specifically relating to a bellows gate valve and its testing device. Background Technology

[0002] A bellows-sealed gate valve, also known as a bellows-sealed gate valve, is designed to create a metal barrier between the fluid medium and the atmosphere through automatic roll welding, ensuring zero leakage from the valve stem. Internally, the bellows structure is used; the lower end of the stainless steel bellows is welded to the valve stem to prevent process fluids from corroding it. The other end is positioned between the valve body and the valve cover to form a static seal.

[0003] In order to ensure the stability of valves during actual use, it is necessary to test the valves in the existing technology. Traditional testing methods mostly use manual sampling inspection. This testing method requires a high level of experience from the testers and has poor testing accuracy. It cannot directly test the internal structure of the valve body. During testing, it is often necessary to spend time adjusting and fixing, which is very troublesome. Summary of the Invention

[0004] The purpose of this invention is to provide a bellows stop valve and detection device with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A bellows gate valve includes a top flange, a side flange, and an inner hole and an outer hole disposed therein, wherein the inner hole and the outer hole are coaxially arranged.

[0007] A testing device for a bellows gate valve, used for quality testing of the bellows gate valve, includes a frame structure connected to a conveyor belt. The surface of the conveyor belt has spaced slots. A valve assembly is placed on the surface of the conveyor belt, with its control valve port communicating with the slots. A testing component is also provided within the frame structure. The testing component includes a liftable testing housing, which includes a support housing. A clamping part is connected to the surface of the support housing. A rotatable rotating housing is also provided inside the support housing. A testing rod is connected to the rotating housing. The testing rod is inserted into the control valve port of the valve assembly to correct the position of the valve assembly relative to the surface of the conveyor belt. The clamping part clamps the valve assembly, and the testing rod detects the diameter of the orifice within the valve assembly.

[0008] As a further optimization of the present invention, the control valve port of the valve assembly is provided with a coaxial inner hole and an outer hole. The inner hole is located in the middle of the valve assembly. A first detection part and a second detection part are fixedly connected to the surface of the detection rod. The first detection part detects the diameter of the inner hole, and the second detection part detects the diameter of the outer hole.

[0009] As a further optimization of the present invention, both the first detection unit and the second detection unit include a movable plate. A pressure detection sensor is provided on the side of the movable plate near the hole wall. A telescopic bladder is fixedly connected to the side of the movable plate near the detection rod. The detection rod is hollow inside and an air tube is inserted from the bottom end. The telescopic bladder is connected to the air tube. A metering rope is fixedly connected to the end of the movable plate near the detection rod. The metering rope is inserted into the inside of the detection rod, enters the rotating housing, and connects to the winding roller.

[0010] As a further optimization of the present invention, the moving plates of the first detection unit and the second detection unit move in opposite directions.

[0011] As a further optimization of the present invention, an identification ring is also provided inside the rotating housing. The identification ring is semi-ring-shaped, and a limiting groove is provided near the inner edge of the identification ring. The two sets of measuring ropes are respectively inserted into the two sets of limiting grooves. The surface of the measuring rope is provided with line markings, and the inner wall of the identification ring is provided with ring markings. An image acquisition device is also connected inside the rotating housing. The image acquisition device acquires the ring markings on the surface of the identification ring and the line markings on the surface of the measuring rope.

[0012] As a further optimization of the present invention, a drive assembly is fixedly connected inside the bearing housing. The drive assembly drives the rotating housing to rotate. The drive assembly includes a drive motor, and the drive end of the drive motor is connected to a chain structure. The rotating housing rotates inside the bearing housing. The drive motor is connected to the rotating housing through the chain structure to drive its rotation. A lifting assembly is connected to the frame structure. The lifting end of the lifting assembly is fixedly connected to the detection housing. The lifting assembly includes a drive motor, and the drive end of the drive motor is fixedly connected to a connecting screw. A connecting plate is threaded onto the surface of the screw. The connecting plate is fixedly connected to the detection housing. A bearing seat is connected to the end of the screw. The bearing seat is connected to the frame structure.

[0013] As a further optimization of the present invention, the clamping part includes a fixed tube fixed in the bearing housing, the fixed tube is slidably connected to a clamping plate, the clamping plate can slide out from the upper end of the fixed tube, and a clamping pouch is fixedly connected to the surface of the clamping plate.

[0014] As a further optimization of the present invention, an air pump assembly is provided inside the frame structure. The output end of the air pump assembly is connected to a first air valve and a second air valve. The first air valve is connected to two sets of fixed pipe fittings, and the second air valve is connected to the air pipe fittings.

[0015] As a further optimization of the present invention, the conveyor belt body includes a bearing strip and side strips. The number of bearing strips is several sets. The slots are arranged between the bearing strips. Both ends of the bearing strip are fixedly connected to different side strips. The side strips rotate cyclically, driving the bearing strips to move. The valve assembly is mounted on two sets of bearing strips.

[0016] The beneficial effects of this invention are as follows: During the transportation of valve assemblies, quality inspection can be directly performed, including only the roundness, flatness, and diameter / length error of the inner and outer holes. In practical use, the valve assembly does not need to be completely fixed during transportation; it can be directly pushed in the reverse direction onto the conveyor belt surface. The top flange (the top before reversal) provides excellent stability, and placement only requires aligning the slot with the outer hole. The invention features a liftable detection housing with a rotatable detection rod inserted into the valve assembly. The valve assembly is corrected by the oppositely arranged first and second detection parts. Pressure sensors on the surfaces of the first and second detection parts then perform quality inspection on the inner and outer holes of the valve assembly. The hole diameter can be obtained based on the movement of the measuring rope, and corresponding image information can be acquired. This information is recorded based on the valve assembly's code for easy traceability later. The entire device has a simple structure, is easy to operate, and flexible in use, facilitating valve inspection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is the invention Figure 1 A schematic diagram of the side structure;

[0019] Figure 3 This is a schematic diagram of the structure of the present invention before the detection rod is inserted;

[0020] Figure 4 This is a schematic diagram of the conveyor belt body of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure after the detection rod of the present invention is inserted;

[0022] Figure 6 This is the invention Figure 5 Internal structure diagram;

[0023] Figure 7 This is a schematic diagram of the identification ring structure of the present invention;

[0024] Figure 8 This is a top view of the identification ring structure of the present invention;

[0025] Figure 9 This is a schematic diagram of the external structure of the valve assembly of the present invention;

[0026] Figure 10 This is a schematic diagram of the internal structure of the valve assembly of the present invention.

[0027] In the diagram: 1. Frame structure; 2. Conveyor belt; 21. Bearing bar; 22. Groove; 23. Side strip; 3. Air pump assembly; 4. Detection assembly; 41. Detection housing; 411. Bearing housing; 412. First air valve; 413. Second air valve; 414. Rewinding roller; 415. Identification ring; 4151. Ring marking; 4152. Restriction chute; 416. Drive assembly; 42. Lifting assembly; 43. Detection rod; 431. First detection section; 4 32. Second Inspection Section; 433. Monitoring Section; 434. Moving Plate; 435. Pressure Sensor; 436. Measuring Rope; 4361. Line Marker; 437. Telescopic Bag Component; 438. Air Tubing Component; 439. Rotating Housing; 44. Clamping Section; 441. Clamping Plate Component; 442. Fixing Pipe Component; 443. Clamping Bag Component; 5. Protective Housing; 6. Valve Assembly; 61. Inner Hole; 62. Outer Hole; 63. Top Flange; 64. Side Flange. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0029] Example 1

[0030] This implementation example Figure 1 , Figure 2 As shown, a bellows gate valve is provided, which includes a top flange 63, a side flange 64, and an inner hole 61 and an outer hole 62 disposed therein. The inner hole 61 and the outer hole 62 are coaxially arranged. The top of the valve, i.e. the top flange 63, is placed in contact with the surface of the conveyor belt body 2. When placed, the outer hole 62 is connected to the slot 22.

[0031] This embodiment is shown in Figures 3 to 4. Figure 10As shown, a testing device for a bellows stop valve is also provided, including a frame structure 1, a conveyor belt 2 connected to the frame structure 1, slots 22 spaced apart on the surface of the conveyor belt 2, a valve assembly 6 placed on the surface of the conveyor belt 2, and the control valve port of the valve assembly 6 communicating with the slots 22. A testing component 4 is also provided inside the frame structure 1. The testing component 4 includes a liftable testing housing 41, a bearing housing 411, a clamping part 44 connected to the surface of the bearing housing 411, and a rotatable rotating housing 439 inside the bearing housing 411. A testing rod 43 is connected to the rotating housing 439. The testing rod 43 is inserted into the control valve port of the valve assembly 6 to correct the position of the valve assembly 6 relative to the surface of the conveyor belt 2. The clamping part 44 clamps the valve assembly 6, and the testing rod 43 detects the size of the hole in the valve assembly 6.

[0032] It should be noted that in actual use, this embodiment first corrects the position of the valve located on the surface of the conveyor belt body 2, then fixes it, and finally measures it to obtain the dimensions of its inner hole 61 and outer hole 62. This allows for the verification and recording of the valve body's qualification status.

[0033] Specifically, in this embodiment, the valve assembly 6 used for detection has a coaxial inner hole 61 and an outer hole 62 inside its control valve port. The inner hole 61 is located in the middle of the valve assembly 6. The surface of the detection rod 43 is fixedly connected to a first detection part 431 and a second detection part 432. The first detection part 431 detects the diameter of the inner hole 61, and the second detection part 432 detects the diameter of the outer hole 62.

[0034] Furthermore, both the first detection unit 431 and the second detection unit 432 include a movable plate 434. A pressure detection sensor 435 is provided on the side of the movable plate 434 near the hole wall. A telescopic bladder 437 is fixedly connected to the side of the movable plate 434 near the detection rod 43. The detection rod 43 is hollow inside, and an air tube 438 is inserted from the bottom end. The telescopic bladder 437 communicates with the air tube 438. A metering rope 436 is fixedly connected to the end of the movable plate 434 near the detection rod 43. The metering rope 436 is inserted into the inside of the detection rod 43 and enters into the rotating housing 439, where it is connected to the winding roller 414.

[0035] In this embodiment, the orifice diameter of the inner and outer holes is detected by a pressure sensor 435. Specifically, in actual use, the detection rod 43 is first inserted into the valve assembly 6 from the control valve port. The first detection part 431 of the detection rod 43 corresponds to the inner hole 61, and the second detection part 432 corresponds to the outer hole 62. In actual use, other telescopic components with telescopic bladders 437 can be used, but in this embodiment, the telescopic bladder 437 is the best choice. It expands when inflated and contracts when deflated, so that the moving plate 434 is close to the surface of the detection rod 43, making the structure of the entire detection rod 43 more compact and easier to insert into the valve assembly 6.

[0036] It should be further noted that the moving plate 434 of the first detection unit 431 and the second detection unit 432 move in opposite directions.

[0037] Based on the above scheme, the detection rod 43 has a corrective function only when the moving plate 434 in the first detection unit 431 and the second detection unit 432 are in opposite directions. That is, in actual use, after the detection rod 43 is inserted into the valve assembly 6, the position of the valve assembly 6 on the surface of the conveyor belt 2 is adjusted by the expansion of the telescopic bladder 437. Then, the entire valve assembly 6 is clamped and fixed by the clamping part 44, and then the detection rod 43 is driven to rotate by the drive assembly 416. That is, the first detection unit 431 and the second detection unit 432 rotate. As the detection rod 43 rotates, if the inner hole 61 and the outer hole are in opposite directions, the detection rod 43 has a corrective function. If the smoothness of the hole wall of 62 is poor, or the roundness of the entire hole is poor, the pressure detected by the pressure sensor 435 will change accordingly. In this embodiment, the pressure sensor 435 should also be connected to a corresponding processing module to obtain the pressure change curve through the processing module and compare it with the pressure change curve in the historical data to determine whether the valve assembly 6 is a qualified product. In this embodiment, the pressure sensor 435 is best selected as a pressure-triggered sensor. If other types of sensors are used, attention should be paid to the environment in which the sensor is used, and the settings should be made based on the actual situation.

[0038] Furthermore, the processing module set in this embodiment uses a DSP, an ARM architecture processor (C6A816X processor), a memory disk storage unit, and a control microcontroller (AT89C51 microcontroller). This processing module is also connected to various electrical components to control the opening and closing of each electrical component.

[0039] Furthermore, in actual use, a monitoring unit 433 can be installed on the top of the detection rod 43. The monitoring unit 433 can be a photosensitive component or an infrared distance sensor. The output end of the monitoring unit 433 is connected to the control module. When the monitoring unit 433 detects that the valve assembly 6 is covered by the slot 22 above it, the processing module controls the detection housing 41 to move upward and insert the detection rod 43 into the valve assembly 6.

[0040] Furthermore, an identification ring 415 is provided inside the rotating housing 439. The identification ring 415 is semi-ring-shaped, and a limiting groove 4152 is provided near the inner edge of the identification ring 415. Two sets of measuring ropes 436 are respectively inserted into the two sets of limiting grooves 4152. The surface of the measuring rope 436 is provided with a line mark 4361, and the inner wall of the identification ring 415 is provided with a ring mark 4151. An image acquisition device is also connected inside the rotating housing 439. The image acquisition device acquires the ring mark 4151 on the surface of the identification ring 415 and the line mark 4361 on the surface of the measuring rope 436.

[0041] In practice, in this embodiment, the movement detection method for the measuring rope 436 can be based on existing technology. For example, corresponding protrusions can be provided on the surface of the measuring rope 436. These protrusions will drive the rotating wheel to rotate during movement, and the movement length of the measuring rope 436 can be obtained by calculating the number of rotations of the rotating wheel, thereby converting it into the radius of the inner hole 61 or the outer hole 62. Alternatively, a rotation sensor can be directly provided at the shaft of the winding roller 414 to obtain its rotation amount, thereby obtaining the movement amount of the measuring rope 436. In this embodiment, the above-mentioned image acquisition, recognition, and judgment method is adopted. The image acquisition device, i.e., a high-definition camera, is connected to the control module. The control module is equipped with an image recognition system. The image recognition system identifies the ring mark 4151 and the line mark 4361 (multiple sets of line marks 4361 are set, each of which can represent a movement amount, while only one set of ring marks 4151 is used to mark the standard position) to obtain the movement amount of the measuring rope 436. In this embodiment, the image data can be matched with the number of the valve component 6 being detected, so that the factory data of any valve component 6 can be found and traced.

[0042] Furthermore, a drive assembly 416 is fixedly connected inside the bearing housing 411. The drive assembly 416 drives the rotating housing 439 to rotate. The drive assembly 416 includes a drive motor, and the drive end of the drive motor is connected to a chain structure. The rotating housing 439 rotates inside the bearing housing 411. The drive motor is connected to the rotating housing 439 through the chain structure to drive its rotation. The frame structure 1 is connected to a lifting assembly 42. The lifting end of the lifting assembly 42 is fixedly connected to the detection housing 41. The lifting assembly 42 includes a drive motor, and the drive end of the drive motor is fixedly connected to a connecting screw. A connecting plate is threaded onto the surface of the screw. The connecting plate is fixedly connected to the detection housing 41. A bearing seat is connected to the end of the screw. The bearing seat is connected to the frame structure 1.

[0043] In this embodiment, stepper motors are used as the drive motors. A stepper motor, in this embodiment, refers to an electric motor that converts electrical pulse signals into angular displacement to control rotor rotation. It serves as an actuator in automatic control devices; for each input pulse signal, the stepper motor moves one step forward, hence it is also called a pulse motor. Stepper motors are widely used in peripherals of digital computers, as well as printers, plotters, and disk drives. The drive power supply for the stepper motor consists of a frequency converter pulse signal source, a pulse distributor, and a pulse amplifier, thereby providing pulse current to the motor windings. The operating performance of the stepper motor depends on the good coordination between the motor and the drive power supply. The advantages of stepper motors are that they have no cumulative error, simple structure, convenient use and maintenance, and low manufacturing cost.

[0044] Furthermore, the clamping part 44 includes a fixed tube 442 fixed inside the bearing housing 411, a clamping plate 441 slidably connected to the fixed tube 442, the clamping plate 441 can slide out from the upper end of the fixed tube 442, and a clamping pouch 443 is fixedly connected to the surface of the clamping plate 441.

[0045] It should be noted that the frame structure 1 is equipped with an air pump assembly 3. The output end of the air pump assembly 3 is connected to a first air valve 412 and a second air valve 413. The first air valve 412 is connected to two sets of fixed pipe fittings 442, and the second air valve 413 is connected to an air pipe fitting 438. Both the first air valve 412 and the second air valve 413 can be selected as solenoid valves.

[0046] In actual use, gas is injected into the fixed pipe 442 through the first air valve 412, causing the clamping plate 441 to move upward. The inside of the clamping plate 441 and the position of the clamping bladder 443 are also equipped with valves. After the clamping plate 441 moves upward to the limit position, gas is injected into the clamping bladder 443 through the valves, causing it to expand and clamp the valve assembly 6. Because it is an air bladder, it has strong adaptability.

[0047] It should be further explained that the conveyor belt body 2 includes a support strip 21 and a side strip 23. There are several sets of support strips 21. The slots 22 are set between the support strips 21. Both ends of the support strip 21 are fixedly connected to different side strips 23. The side strips 23 rotate in a cycle, driving the support strips 21 to move. The valve assembly 6 is placed with two sets of support strips 21.

[0048] It should be noted that the bellows stop valve and detection device, in use, are equipped with a liftable detection housing 41, inside which is a rotatable detection rod 43. The detection rod 43 is inserted into the valve assembly 6, and the valve assembly 6 is corrected by the first detection part 431 and the second detection part 432 arranged in opposite directions. Then, the pressure detection sensor 435 on the surface of the first detection part 431 and the second detection part 432 is used to detect the quality of the inner hole 61 and the outer hole 62 inside the valve assembly 6. The hole size can be obtained based on the movement of the measuring rope 436, and the corresponding image information can be obtained. The information is recorded based on the code of the valve assembly 6, which is convenient for later traceability. The whole device has a simple structure, is easy to operate, and is flexible in use, making it convenient for valve detection.

[0049] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A testing device for a bellows-type shut-off valve, characterized in that: The system includes a frame structure connected to a conveyor belt. The surface of the conveyor belt has spaced slots. A valve assembly is placed on the surface of the conveyor belt, and its control valve port communicates with the slots. The valve assembly also includes a top flange, side flanges, and inner and outer holes coaxially arranged within them. A detection component is also housed within the frame structure. The detection component includes a liftable detection housing, a support housing, and a clamping part connected to the surface of the support housing. A rotatable rotating housing is also located inside the support housing, and a detection rod is connected to the rotating housing. The detection rod is inserted into the control valve port of the valve assembly to correct the position of the valve assembly relative to the surface of the conveyor belt. The clamping part clamps the valve assembly. The rod detects the orifice size within the valve assembly. The control valve port of the valve assembly has a coaxial inner and outer hole, with the inner hole located in the middle of the valve assembly. A first detection part and a second detection part are fixedly connected to the surface of the detection rod. The first detection part detects the orifice diameter of the inner hole, and the second detection part detects the orifice diameter of the outer hole. Both the first and second detection parts include a movable plate. A pressure sensor is located on the side of the movable plate near the orifice wall. A telescopic bladder is fixedly connected to the side of the movable plate near the detection rod. The detection rod is hollow inside, and an air tube is inserted from its bottom end. The telescopic bladder communicates with the air tube. A measuring rope is fixedly connected to the end of the movable plate near the detection rod. The measuring rope is inserted into the inside of the detection rod, enters the rotating housing, and connects to the winding roller.

2. The detection device for a bellows shut-off valve according to claim 1, characterized in that: The moving plates of the first detection unit and the second detection unit move in opposite directions.

3. The detection device for a bellows stop valve according to claim 2, characterized in that: The rotating housing is also equipped with an identification ring, which is semi-circular in shape and has a limiting groove near the inner edge of the identification ring. The two sets of measuring ropes are respectively inserted into the two sets of limiting grooves. The surface of the measuring rope is marked with a line mark, and the inner wall of the identification ring is marked with a ring mark. The rotating housing is also connected to an image acquisition device, which captures the ring mark on the surface of the identification ring and the line mark on the surface of the measuring rope.

4. The detection device for a bellows shut-off valve according to claim 3, characterized in that: A drive assembly is fixedly connected inside the bearing housing. The drive assembly drives the rotating housing to rotate. The drive assembly includes a drive motor, and the drive end of the drive motor is connected to a chain structure. The rotating housing rotates inside the bearing housing. The drive motor is connected to the rotating housing through the chain structure to drive its rotation. The frame structure is connected to a lifting assembly. The lifting end of the lifting assembly is fixedly connected to the detection housing. The lifting assembly includes a drive motor. The drive end of the drive motor is fixedly connected to a connecting screw. A connecting plate is threaded onto the surface of the screw. The connecting plate is fixedly connected to the detection housing. A bearing seat is connected to the end of the screw. The bearing seat is connected to the frame structure.

5. The detection device for a bellows shut-off valve according to claim 4, characterized in that: The clamping part includes a fixed tube fixed inside the bearing housing, a clamping plate slidably connected to the fixed tube, the clamping plate being able to slide out from the upper end of the fixed tube, and a clamping pouch being fixedly connected to the surface of the clamping plate.

6. The detection device for a bellows shut-off valve according to claim 5, characterized in that: The frame structure is equipped with an air pump assembly. The output end of the air pump assembly is connected to a first air valve and a second air valve. The first air valve is connected to two sets of fixed pipe fittings, and the second air valve is connected to the air pipe fittings.

7. The detection device for a bellows shut-off valve according to claim 1, characterized in that: The conveyor belt includes a support strip and side strips. There are several sets of support strips. The slots are arranged between the support strips. Both ends of the support strip are fixedly connected to different side strips. The side strips rotate cyclically, driving the support strips to move. The valve assembly is mounted on two sets of support strips.

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