Control valve sealing detection device

Abstract

The utility model discloses a control valve sealing detection device, which comprises a base with a hollow structure, two cylinders are fixedly connected inside the base, the outer walls of the output ends of the two cylinders are fixedly connected with concentric-square-shaped blocks, the tops of the two concentric-square-shaped blocks are fixedly connected with L-shaped frames, and the outer walls of the L-shaped frames are provided with two sliding holes. Through the arrangement of the air cylinder, the concentric-square-shaped block, the L-shaped frame, the butt joint sleeve, the air inlet pipe, the pressure gauge, the sliding rod, the spring, the threaded rod, the rectangular plate, the limiting rod, the vertical hole and the conical butt joints, the control valve body is positioned through the conical design and relative movement of the two conical butt joints, the spring conducts buffering in the moving process, so that a valve port of the control valve body is prevented from being damaged, and the service life of the control valve body is prolonged. The positions of the four sliding rods are fixed through the four limiting rods, the sealing performance of subsequent detection is guaranteed, and the conical butt joint and the butt joint sleeve are prevented from moving outwards.

Description

Technical Field

[0001] The utility model relates to the technical field of control valve detection, in particular to a control valve sealing detection device. Background Art

[0002] A control valve is a device used to adjust the flow and pressure of a fluid. It has two modes: linear adjustment and proportional adjustment. By adjusting the opening of the valve, the flow rate and pressure of the medium are changed, thereby achieving control over the fluid. The sealing of a control valve is one of its important performance indicators, which directly affects the service life and use effect of the valve. Therefore, the sealing test of the control valve is very important for the evaluation of the valve quality, which can effectively improve the sealing performance and use effect of the valve and ensure production safety.

[0003] After searching, the patent document with publication number: CN219641184U discloses a control valve sealing detection device, which is provided with a valve pre-fixing mechanism. The mechanism first fixes the control valve at the center position of the device where the control valve port needs to be sealed, so that the fixing block can be smoothly inserted into the inside of the control valve port, and the stability of the control valve during air tightness detection can be improved; a buffer mechanism is provided, which can prevent the fixing block from damaging the control valve port through the buffer force of the buffer spring when the hydraulic cylinder controls the fixing block to be inserted into the inside of the control valve port. In addition, the buffer spring can exert a certain rebound force after being compressed, thereby improving the sealing effect of the control valve port.

[0004] Although the above device solves some of the existing shortcomings, a large number of samples are required for sampling inspection of control valves. When inspecting the above device, it is necessary to disassemble and install the device back and forth, which takes a long time to wait and is not conducive to rapid inspection. In addition, after the control valve port is buffered by a spring, when the gas pressure at the control valve port is large, it is easy to overcome the pressure of the spring, resulting in gas leakage and affecting the inspection results. Therefore, we propose a control valve sealing inspection device to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a control valve sealing detection device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A control valve sealing detection device comprises a base with a hollow structure, wherein two cylinders are fixedly connected inside the base, and the outer walls of the output ends of the two cylinders are fixedly connected with a return block, and the tops of the two return blocks are fixedly connected with an L-shaped frame, and the outer wall of the L-shaped frame is provided with two sliding holes, and the inner walls of the two sliding holes are slidably connected with docking sleeves, and an outer wall of one of the docking sleeves is fixedly connected with an air intake pipe, and a pressure gauge is fixedly installed on the outer wall of the air intake pipe, and a buffer mechanism is provided on the outer wall of the docking sleeve, and a threaded rod is rotatably connected to the outer wall of the L-shaped frame, and a rectangular plate is provided on the outer wall of the threaded sleeve, and two limit rods are fixedly connected to the outer wall of the rectangular plate, and the outer wall of the L-shaped frame is provided with two vertical holes, and the outer wall of the limit rod is slidably connected to the inner wall of the vertical hole, and the outer wall of the docking sleeve is fixedly connected with a conical docking joint, and a supporting mechanism is provided on the top of the base.

[0008] Preferably, the buffer mechanism includes four sliding rods, and the four sliding rods are fixedly connected to the outer walls of the two docking sleeves in groups of two. The outer wall sleeve of the sliding rod is provided with a spring, one end of the spring is fixedly connected to the outer wall of the docking sleeve, and the other end of the spring is fixedly connected to the outer wall of the docking sleeve. By setting the spring, the docking sleeve and the conical docking head are buffered after being squeezed to the valve port position of the control valve body.

[0009] Preferably, the supporting mechanism includes two fixed plates, the top of the base is fixedly connected to the bottom of the two fixed plates, two guide rods are fixedly connected between the two fixed plates, the outer wall sliding sleeves of the two guide rods are provided with a movable plate, and the top of the movable plate is fixedly connected to two supporting arc seats, a control valve body is placed inside one of the supporting arc seats, and the two guide rods are provided to assist the movable plate to move forward and backward.

[0010] Preferably, two slide grooves are provided on the top of the base, and the inner walls of the two slide grooves are slidably connected to the outer walls of the two return blocks respectively, and the return blocks are assisted to move linearly by providing the slide grooves.

[0011] Preferably, one end of the air inlet pipe is fixedly connected to an air pump.

[0012] Preferably, the outer walls of the two L-shaped frames are each provided with two through holes, the inner walls of the through holes are slidably connected to the outer wall of the slide rod, and the slide rod is provided to assist the docking sleeve to perform left and right linear movement.

[0013] Preferably, the bottom of the limiting rod is fixedly connected with an arc-shaped piece, and the outer wall of the arc-shaped piece is pressed against the outer wall of the sliding rod. The sliding rod is fixed in position by providing the arc-shaped piece, thereby fixing the position of the docking sleeve.

[0014] Compared with the prior art, the advantages of the utility model are:

[0015] This solution arranges a cylinder, a return block, an L-shaped frame, a docking sleeve, an air inlet pipe, a pressure gauge, a sliding rod, a spring, a threaded rod, a rectangular plate, a limit rod, a vertical hole and a tapered docking joint. The control valve body is positioned through the tapered design and relative movement of the two tapered docking joints. The spring is used for buffering during the movement to avoid damage to the valve port of the control valve body. The four sliding rods are fixed in position by four limit rods to ensure the sealing of subsequent inspections and avoid the tapered docking joint and the docking sleeve from moving outward. By arranging a fixed plate, a guide rod, a movable plate and a supporting arc seat, the control valve body is switched by the forward and backward movement of the movable plate, thereby reducing waiting time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a control valve sealing detection device proposed by the utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of a control valve sealing detection device proposed by the utility model;

[0019] Figure 3 A control valve sealing detection device proposed by the utility model Figure 2 A schematic diagram of the enlarged structure of part A in the figure.

[0020] In the figure: 1. base; 2. cylinder; 3. return block; 4. L-shaped frame; 5. docking sleeve; 6. air inlet pipe; 7. pressure gauge; 8. slide rod; 9. spring; 10. threaded rod; 11. limit rod; 12. vertical hole; 13. tapered docking joint; 14. fixed plate; 15. guide rod; 16. movable plate; 17. support arc seat; 18. control valve body; 19. rectangular plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Depend on Figure 1-Figure 3As shown, a control valve sealing detection device is involved, including a base 1 with a hollow structure, two cylinders 2 are fixedly connected inside the base 1, and the outer walls of the output ends of the two cylinders 2 are fixedly connected with return blocks 3. Two sliding grooves are arranged on the top of the base 1, and the inner walls of the two sliding grooves are slidingly connected with the outer walls of the two return blocks 3 respectively. The operation of the two cylinders 2 drives the two return blocks 3 to move relative to each other through the two sliding grooves. The two cylinders 2 use existing valves to control the air intake and exhaust of the two cylinders 2, and the synchronization of the two cylinders 2 can be achieved. Through the switching time and flow of the valve, the parameters such as the position, speed and force of the two cylinders 2 can be controlled to achieve the synchronization effect of the two cylinders 2.

[0023] The tops of the two return blocks 3 are fixedly connected with an L-shaped frame 4, the outer wall of the L-shaped frame 4 is provided with two sliding holes, the inner walls of the two sliding holes are slidably connected with docking sleeves 5, the outer wall of one of the docking sleeves 5 is fixedly connected with an air intake pipe 6, the outer wall of the air intake pipe 6 is installed with an existing valve, one end of the air intake pipe 6 is fixedly connected with an air pump, the operation of the air pump introduces compressed gas into the air intake pipe 6, and enters the docking sleeve 5 and the conical docking joint 13 through the air intake pipe 6, and enters the control valve body 18 for sealing detection.

[0024] A pressure gauge 7 is fixedly installed on the outer wall of the intake pipe 6. The pressure gauge 7 is usually composed of an elastic element (such as a film). When gas pressure is applied to the intake pipe 6, the elastic element will deform. According to the linear elastic characteristics of the elastic material, the deformation of the elastic element is proportional to the pressure applied from the outside. Therefore, by measuring the deformation of the elastic element, the pressure value of the gas can be obtained. When the control valve body 18 is not sealed, the value on the pressure gauge 7 changes significantly. The outer wall of the L-shaped frame 4 is rotatably connected with a threaded rod 10. The outer wall of the threaded rod 10 is threadedly sleeved with a rectangular plate 19. The outer wall of the rectangular plate 19 is fixedly connected with two limit rods 11. Rotating the two threaded rods 10 causes the two rectangular plates 19 to move up and down. The up and down movement of the two rectangular plates 19 drives the four limit rods 11 to move up and down. The outer wall of the L-shaped frame 4 is provided with two vertical holes 12. The outer wall of the limit rod 11 is slidably connected to the inner wall of the vertical hole 12. The vertical hole 12 assists the limit rod 11 to move up and down. The outer wall of the docking sleeve 5 is fixedly connected with a conical docking joint 13.

[0025] The outer wall of the docking sleeve 5 is provided with a buffer mechanism, which includes four slide bars 8. The outer walls of the two L-shaped frames 4 are each provided with two through holes, the inner walls of the through holes are slidably connected to the outer walls of the slide bars 8, and the four slide bars 8 are fixedly connected to the outer walls of the two docking sleeves 5 in groups of two.

[0026] The outer wall of the slide rod 8 is sleeved with a spring 9, which belongs to the prior art and has elastic force. One end of the spring 9 is fixedly connected to the outer wall of the docking sleeve 5, and the other end of the spring 9 is fixedly connected to the outer wall of the docking sleeve 5. After the conical docking joint 13 is squeezed to the valve port position of the control valve body 18, the spring 9 is used for buffering. The bottom of the limit rod 11 is fixedly connected with an arc-shaped piece, and the outer wall of the arc-shaped piece is squeezed against the outer wall of the slide rod 8.

[0027] A supporting mechanism is provided at the top of the base 1, and the supporting mechanism includes two fixed plates 14. The top of the base 1 is fixedly connected to the bottoms of the two fixed plates 14, and two guide rods 15 are fixedly connected between the two fixed plates 14. The outer wall sliding sleeves of the two guide rods 15 are provided with a movable plate 16, and the top of the movable plate 16 is fixedly connected to two supporting arc seats 17, and a control valve body 18 is placed inside one of the supporting arc seats 17.

[0028] Working principle: When in use, place the control valve body 18 on the supporting arc seat 17, and the two cylinders 2 operate to drive the two return blocks 3 to move relative to each other. The two return blocks 3 move relative to each other, driving the two L-shaped frames 4 to move relative to each other, thereby driving the docking sleeve 5 and the tapered docking joint 13 to move relative to each other, and through the tapered design of the tapered docking joint 13, after sliding into the valve port of the control valve body 18, the control valve body 18 is positioned. When the tapered docking joint 13 moves continuously, the valve port position is sealed. At this time, the four slide bars 8 on the two docking sleeves 5 are buffered by four springs 9 to avoid damage to the valve port of the control valve body 18. When the two cylinders 2 stop operating and the two tapered docking joints 1 After the control valve body 18 is clamped with the two docking sleeves 5, the two threaded rods 10 are rotated to move the two rectangular plates 19 downward. The two rectangular plates 19 move downward to drive the four limit rods 11 to move downward. The four limit rods 11 move downward to drive the arc-shaped sheet to be squeezed onto the outer wall of the slide bar 8 to fix its position, so that the spring 9 is no longer used for buffering, thereby ensuring the sealing of subsequent detection and preventing the conical docking joint 13 and the docking sleeve 5 from moving outward. During this detection process, another control valve body 18 can be placed on another supporting arc seat 17. After the last control valve body 18 is detected, the control valve body 18 is switched by moving the moving plate 16 back and forth to reduce the waiting time.

[0029] The standard parts used in the utility model can all be purchased from the market, special-shaped parts can be customized according to the description in the specification and the drawings, the specific connection methods of each part all adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art, the machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0030] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A control valve sealing detection device, comprising a base (1) with a hollow structure, characterized in that: Two cylinders (2) are fixedly connected inside the base (1); the outer walls of the output ends of the two cylinders (2) are fixedly connected with return blocks (3); the tops of the two return blocks (3) are fixedly connected with L-shaped frames (4); the outer wall of the L-shaped frame (4) is provided with two sliding holes; the inner walls of the two sliding holes are slidably connected with docking sleeves (5); an air intake pipe (6) is fixedly connected to the outer wall of one of the docking sleeves (5); a pressure gauge (7) is fixedly installed on the outer wall of the air intake pipe (6); and the outer wall of the docking sleeve (5) is provided with a pressure gauge (7). A buffer mechanism is provided, the outer wall of the L-shaped frame (4) is rotatably connected with a threaded rod (10), the outer wall of the threaded rod (10) is threadedly sleeved with a rectangular plate (19), the outer wall of the rectangular plate (19) is fixedly connected with two limit rods (11), the outer wall of the L-shaped frame (4) is provided with two vertical holes (12), the outer wall of the limit rod (11) is slidably connected with the inner wall of the vertical hole (12), the outer wall of the docking sleeve (5) is fixedly connected with a conical docking head (13), and the top of the base (1) is provided with a supporting mechanism.

2. A control valve sealing detection device according to claim 1, characterized in that: The buffer mechanism comprises four slide bars (8), and the four slide bars (8) are fixedly connected to the outer walls of the two docking sleeves (5) in groups of two. The outer wall sleeves of the slide bars (8) are provided with springs (9), one end of the spring (9) is fixedly connected to the outer wall of the docking sleeve (5), and the other end of the spring (9) is fixedly connected to the outer wall of the docking sleeve (5).

3. A control valve sealing detection device according to claim 1, characterized in that: The support mechanism comprises two fixed plates (14), the top of the base (1) is fixedly connected to the bottom of the two fixed plates (14), two guide rods (15) are fixedly connected between the two fixed plates (14), the outer walls of the two guide rods (15) are slidably sleeved with a movable plate (16), the top of the movable plate (16) is fixedly connected to two supporting arc seats (17), and a control valve body (18) is placed inside one of the supporting arc seats (17).

4. A control valve sealing detection device according to claim 1, characterized in that: Two slide grooves are provided on the top of the base (1), and the inner walls of the two slide grooves are respectively slidably connected to the outer walls of the two return blocks (3).

5. A control valve sealing detection device according to claim 1, characterized in that: One end of the air inlet pipe (6) is fixedly connected to an air pump.

6. A control valve sealing detection device according to claim 2, characterized in that: The outer walls of the two L-shaped frames (4) are each provided with two through holes, and the inner walls of the through holes are slidably connected to the outer wall of the sliding rod (8).

7. A control valve sealing detection device according to claim 2, characterized in that: The bottom of the limiting rod (11) is fixedly connected with an arc-shaped piece, and the outer wall of the arc-shaped piece is pressed against the outer wall of the sliding rod (8).

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