A control valve body strength testing device

Abstract

The present invention relates to the field of valve body detection technology, and discloses a control valve body strength detection device, including a seat body; a detection component, used for performing internal and external pressure strength detection on the valve body; a feeding component, used for automatically feeding and automatically discharging the detected valve body; the detection component includes an external pressure detection device, an internal pressure detection device and a power element; the power element drives the external pressure detection device to perform surface strength detection on the valve body and also drives the internal pressure detection device to perform fluid injection pressure detection on the inside of the valve body. The control valve body strength detection device can realize the pressure strength detection of the outer surface of the detected valve body and can also perform water injection pressure impact detection on the valve body through the detection component, realizing internal and external detection, thereby simulating the working environment of the real control valve, making the detection data more reliable, and improving the quality of the control valve during the production process.

Description

Technical Field

[0001] The invention relates to the technical field of valve body detection, in particular to a control valve body strength detection device. Background Art

[0002] Control valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc.

[0003] The shell part of the valve is called the valve body. At present, in the process of valve body production, the valve body must first be tested for pressure strength. The traditional way is to manually place it on a press and use the press to perform pressure shock on the valve body. This method only tests the outer surface of the valve body. Because when the valve body is actually used, pressure must be applied internally, because water flow or liquid circulation is inside the valve body. Therefore, at present, only the outer surface of the valve body is tested for pressure strength, and the strength change of the valve body in actual use state cannot be detected. Therefore, a control valve body strength testing device is proposed to solve the above-mentioned problems. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a control valve body strength testing device, which solves the problem that the prior art only performs surface strength testing on the valve body of the control valve or some valves, but is unable to perform testing from the inside, resulting in the detection accuracy and detection values ​​being unable to be compared with the environment in actual usage scenarios, resulting in certain defects in valve body detection.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a control valve body strength detection device, comprising a seat body; a detection component, used to perform internal and external pressure strength detection on the valve body; a feeding component, used to automatically feed and automatically discharge the detected valve body; the detection component comprises an external pressure detection device, an internal pressure detection device and a power element; the power element drives the external pressure detection device to perform surface strength detection on the valve body and also drives the internal pressure detection device to perform fluid injection pressure detection on the interior of the valve body.

[0008] Preferably, the power element is a hydraulic cylinder;

[0009] The external pressure monitoring device includes a slide seat, which is connected to the output end of the hydraulic cylinder. The slide seat is slidably connected in the seat body. Two slide rods are slidably connected to the bottom of the slide seat, and a pressure plate is connected to the bottom of the slide rod.

[0010] Preferably, a compression spring is sleeved on the surfaces of the two sliding rods, one end of the compression spring is connected to the sliding seat, and the other end of the compression spring is connected to the pressure plate, and a contact groove matching the surface of the valve body is provided at the bottom of the pressure plate.

[0011] Preferably, the internal pressure detection device includes a support plate, which is fixed on the output shaft of the hydraulic cylinder, a connecting sleeve is connected to the support plate, a piston plate is connected to the bottom of the connecting sleeve, an extrusion box is slidably connected to the surface of the piston plate, liquid is arranged inside the extrusion box, a drainage pipe is connected to the bottom of the extrusion box, one end of the drainage pipe is connected to the detection valve body, and a sealing device is arranged on the drainage pipe.

[0012] Preferably, the sealing device includes an extrusion frame, the extrusion frame is connected to the support plate through a shaft rod, a sealing sleeve is slidably connected to the surface of the extrusion frame, the sealing sleeve is slidably connected to the drainage tube, and a rubber ring is connected to one side of the sealing sleeve.

[0013] Preferably, the sealing sleeve is provided with two sliding grooves, the extrusion frame is provided with an inclined surface, and the inclined surface is slidably connected to the sliding grooves.

[0014] Preferably, the feeding assembly includes a rotating shaft, the surface of the rotating shaft is fixedly connected to a support frame, the support frame is provided with a V-shaped groove, the surface of the rotating shaft is fixedly connected to a fixed gear, the surface of the fixed gear is meshed with a tooth plate, and the tooth plate is fixed on the sliding frame.

[0015] Preferably, the feed assembly further includes a feed rack and a discharging rack, the feed rack and the discharging rack are both formed by two connecting rods, the feed rack and the discharging rack are both connected to the base body, and the two connecting rods of the discharging rack are arranged one high and one low.

[0016] Preferably, a circulation component is also included, the circulation component includes a water trough, the water trough is located below the discharge rack, a water pump is arranged inside the water trough, the output end of the water pump is connected to a return pipe, one end of the return pipe is connected to a water tank, one side of the water tank is connected to a water diversion pipe, one end of the water diversion pipe is connected to a socket, the socket is slidably connected to the sliding rack, and the sliding rack is provided with a water inlet hole.

[0017] Preferably, the piston plate is threadedly connected to the connecting sleeve via a screw rod, and a shift ball is connected to the piston plate.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides a control valve body strength detection device, which has the following beneficial effects:

[0020] 1. The control valve body strength testing equipment can realize the pressure strength test of the outer surface of the valve body through the detection components. At the same time, it can also perform water injection pressure impact test on the valve body, realizing internal and external detection, so as to simulate the working environment of the real control valve, make the detection data more reliable, and improve the quality of the control valve in the production process.

[0021] 2. The control valve body strength testing equipment can realize automatic loading and discharging through the set feeding assembly, without the need for manual loading by operators. It can not only realize continuous testing, but also make the operation more convenient, thus improving the efficiency of the testing process from the side and reducing the labor intensity of operators due to carrying the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a control valve body strength detection device proposed by the present invention;

[0023] Figure 2 This is a structural schematic diagram of an external pressure detection device of a control valve body strength detection device proposed by the present invention;

[0024] Figure 3 This is a schematic structural diagram of an internal pressure detection device of a control valve body strength detection device proposed by the present invention;

[0025] Figure 4 A schematic diagram of the sealing sleeve structure of a control valve body strength testing device proposed by the present invention;

[0026] Figure 5 This is a partial structural schematic diagram of a feed component of a control valve body strength detection device proposed by the present invention;

[0027] Figure 6 A schematic diagram of the structure of a feed rack and a discharge rack of a control valve body strength detection device proposed by the present invention;

[0028] Figure 7 A schematic diagram of the connection structure of an extrusion box of a control valve body strength testing device proposed by the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of a circulation component of a control valve body strength detection device proposed by the present invention.

[0030] In the figure: 1. seat body; 2. detection component; 201. hydraulic cylinder; 202. slide seat; 203. pressure plate; 204. slide rod; 205. compression spring; 206. contact groove; 207. support plate; 208. connecting sleeve; 209. sliding frame; 210. extrusion box; 211. piston plate; 212. drainage pipe; 213. sealing sleeve; 2131. sliding groove; 214. extrusion frame; 215. water inlet hole; 216. plug sleeve; 217. tooth plate; 218. fixed gear; 219. rotating shaft; 220. supporting frame; 3. feeding component; 301. feeding frame; 302. discharging frame; 4. circulation component; 401. water tank; 402. reflux pipe; 403. water tank; 404. water diversion pipe. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 8 A control valve body strength detection device comprises a seat body 1, a detection component 2, which is used to perform internal and external pressure strength detection on the valve body; a feed component 3, which is used to automatically feed and automatically discharge the detected valve body; the detection component 2 comprises an external pressure detection device, an internal pressure detection device and a power element; the power element drives the external pressure detection device to perform surface strength detection on the valve body and also drives the internal pressure detection device to perform fluid injection pressure detection on the inside of the valve body.

[0033] The power element is a hydraulic cylinder 201; the external pressure monitoring device includes a slide 202, which is connected to the output end of the hydraulic cylinder 201, and the slide 202 is slidably connected in the seat body 1. Two sliding rods 204 are slidably connected to the bottom of the slide 202, and a pressure plate 203 is connected to the bottom of the slide 204 to control the extension of the hydraulic cylinder 201, thereby driving the slide 202 to slide vertically in the seat body 1, and finally driving the pressure plate 203 to perform a strength test on the downward pressure on the valve body through the sliding rod 204, and the detection surface is subjected to a certain degree of pressure change.

[0034] The surfaces of the two slide bars 204 are sleeved with compression springs 205, one end of which is connected to the slide seat 202, and the other end of which is connected to the pressure plate 203. The bottom of the pressure plate 203 is provided with a contact groove 206 that matches the surface of the valve body. The multiple compression springs 205 are arranged so that during pressure detection, the springs provide elastic force to press down, otherwise the downward pressure of the hydraulic cylinder 201 can easily damage the surface of the valve body. The contact groove 206 that matches the surface of the valve body can avoid causing large indentations on the surface of the valve body.

[0035] The internal pressure detection device includes a support plate 207, which is fixed on the output shaft of the hydraulic cylinder 201. A connecting sleeve 208 is connected to the support plate 207. The bottom of the connecting sleeve 208 is connected to a piston plate 211. The surface of the piston plate 211 is slidably connected to an extrusion box 210. Liquid is arranged inside the extrusion box 210. The bottom of the extrusion box 210 is connected to a drainage pipe 212. One end of the drainage pipe 212 is connected to a valve body to be detected. A sealing device is arranged on the drainage pipe 212. The continuous downward movement of the hydraulic cylinder 201 will synchronously drive the support plate 207 to move downward, and then drive the piston plate 211 on the connecting sleeve 208 to slide in the extrusion box 210, showing a piston movement, and finally the liquid inside the extrusion box 210 is squeezed into the interior of the valve body from the port of the drainage tube 212, so that the interior of the valve body is filled with liquid. When the valve body is filled with liquid, the working environment of the control valve is directly simulated. By continuously pressurizing the interior, the water pressure in the actual state is simulated, and finally the strength of the valve body is tested inside.

[0036] The sealing device includes an extrusion frame 214, which is connected to the support plate 207 through a shaft rod. The surface of the extrusion frame 214 is slidably connected with a sealing sleeve 213, which is slidably connected to the drainage tube 212, and a rubber ring is connected to one side of the sealing sleeve 213. Two sliding grooves 2131 are provided on the sealing sleeve 213, and an inclined surface is provided on the extrusion frame 214, and the inclined surface is slidably connected to the sliding groove 2131. When the support plate 207 moves downward synchronously, the extrusion frame 214 will be driven to move downward, and the sliding groove 2131 will be used to slide in coordination with the inclined surface, thereby driving the sealing sleeves 213 on the left and right sides to move relative to each other, and finally achieving extrusion contact with the two sides of the valve body to achieve contact sealing, prevent the liquid from flowing out, and finally ensure that the pressure during internal water injection will not be released.

[0037] The feed assembly 3 includes a rotating shaft 219, a support frame 220 is fixedly connected to the surface of the rotating shaft 219, a V-shaped groove is arranged on the support frame 220, a fixed gear 218 is fixedly connected to the surface of the rotating shaft 219, a tooth plate 217 is meshed on the surface of the fixed gear 218, and the tooth plate 217 is fixed on the sliding frame 209. As the hydraulic cylinder 201 is pressed down again, the sliding frame 209 will be driven to move downward, and then the support frame 220 will be driven to rotate by the meshing of the gears. During the rotation process, the valve body to be detected on the feed frame 301 will be stuck on the V-shaped groove, and then rotated to be under the pressure plate 203. As the hydraulic cylinder 201 is pressed down again, the second valve body can be quickly detected.

[0038] The feed assembly 3 also includes a feed rack 301 and a discharge rack 302. Both the feed rack 301 and the discharge rack 302 are formed by two connecting rods. Both the feed rack 301 and the discharge rack 302 are connected to the seat body 1. The two connecting rods of the discharge rack 302 are arranged one high and one low. Considering that there may be residual liquid in the valve body at this time, the discharge rack 302 is arranged in a state of one high and one low. At this time, the tilted valve body will pour out the internal liquid into the inside of the water tank 401. The use of the tilted connecting rod can achieve the effect of automatic loading and unloading of the valve body, without the need for operators to manually carry and load the materials.

[0039] The utility model also includes a circulation component 4, which includes a water tank 401. The water tank 401 is located below the discharge rack 302. A water pump is arranged inside the water tank 401. The output end of the water pump is connected to a return pipe 402. One end of the return pipe 402 is connected to a water tank 403. One side of the water tank 403 is connected to a water diversion pipe 404. One end of the water diversion pipe 404 is connected to a plug sleeve 216. The plug sleeve 216 is slidably connected to the sliding rack 209. The sliding rack 209 is provided with a water inlet hole 215. Considering the recycling of water after dumping, a water pump is arranged. The liquid dumped in the water tank 401 is pumped into the water tank 403 through the return pipe 402 by the water pump. Then, the water tank 403 injects the liquid into the extrusion box 210 through the water diversion pipe 404, so as to supplement the liquid consumption inside the extrusion box 210. Liquid water is used in this embodiment, but the control valve may also control oil, so it is not limited to a certain liquid. Even if it is oil, the recovery method used will not cause excessive loss of the oil.

[0040] The piston plate 211 is threadedly connected to the connecting sleeve 208 through a screw rod, and a toggle ball is connected to the piston plate 211. Through the provided threaded connection, when the downward stroke needs to be changed, the operator can rotate the piston plate 211 by the toggle ball and thereby drive it to adjust its height up and down in the connecting sleeve 208, thereby achieving fine adjustment of the downward distance of the piston plate 211 and ultimately controlling the internal pressure of the downward pressure.

[0041] Working principle: first, when the whole equipment is in operation, it is necessary to control the extension of the hydraulic cylinder 201, thereby driving the slide 202 to slide vertically in the seat body 1, and finally driving the pressure plate 203 to test the strength of the downward pressure on the valve body through the slide rod 204, and the multiple compression springs 205 are set so that during the pressure test, the springs provide elastic force to press down, otherwise the downward pressure of the hydraulic cylinder 201 will easily cause damage to the surface of the valve body. Therefore, it is possible to detect the pressure strength of the surface of the valve body, and the detection surface is subjected to a certain degree of pressure change. Afterwards, as the hydraulic cylinder 201 continues to move downward, it will synchronously drive the support plate 207 to move downward synchronously, and then drive the piston plate 211 on the connecting sleeve 208 to slide in the extrusion box 210, showing a piston motion, and finally the liquid inside the extrusion box 210 is squeezed from the port of the drainage tube 212 into the interior of the valve body, so that the interior of the valve body is filled with liquid. When the support plate 207 moves downward synchronously, the extrusion frame 214 will be driven downward, and the inclined surface and the sliding groove 2131 will slide together, thereby driving the sealing sleeves 213 on the left and right sides to move relative to each other, and finally achieving extrusion contact on the two sides of the valve body to achieve contact sealing and prevent the liquid from flowing out. After that, as the support plate 207 is pressed downward, the piston plate 211 will be used to squeeze the liquid, and finally the pressure will be applied to the inside of the valve body. Therefore, after the inside of the valve body is filled with water, the sealing state on both sides is achieved, and then pressurization is performed, which can perform internal and external double-layer pressure detection on the valve body of the control valve, thereby simulating the working environment of the real valve body and finally improving the detection effect. The operator can judge the qualified condition of the valve body according to the downward pressing distance, or set a pressure gauge inside the extrusion box 210 to judge the qualified condition of the valve body according to the pressure of the pressure gauge. After the detection is completed, as the hydraulic cylinder 201 shrinks and resets, the force will be unloaded, the surface pressure will gradually release, and then the internal pressure will also release, because at this time the piston plate 211 will not provide a downward impact force. When the support plate 207 rises to a certain distance, the toothed plate 217 will mesh with the fixed gear 218, thereby driving the rotation of the rotating shaft 219, and then driving the rotation of the support frame 220 again. The valve body located on the V-groove of the support frame 220 will rotate and enter the position of the discharge rack 302, and the valve body after detection will roll along the discharge rack 302 to the collection area. Considering that there may be residual liquid in the valve body at this time, the discharge rack 302 is set to a high and low state. At this time, the inclined valve body will pour out the internal liquid into the interior of the water tank 401. Afterwards, as the hydraulic cylinder 201 is pressed down again, the sliding frame 209 will be driven to move downward, and then the support frame 220 will be driven to rotate by the engagement of the gears. During the rotation, the valve body to be tested on the feed rack 301 will be stuck in the V-groove, and then it will be rotated to be under the pressure plate 203. As the hydraulic cylinder 201 is pressed down again, the second valve body can be quickly tested.At the same time, taking into account the recycling of water after dumping, a water pump is set up. The water pump is used to draw the liquid dumped in the water tank 401 into the interior of the water tank 403 through the reflux pipe 402, and then the water tank 403 injects it into the interior of the squeeze box 210 through the water guide pipe 404, so as to replenish the liquid consumption inside the squeeze box 210. Because the water inlet hole 215 will also rise when the sliding frame 209 rises as a whole. When it rises to the extreme position, the water inlet hole 215, the water guide pipe 404 and the squeeze box 210 are connected, so water can be injected into the interior. As the piston plate 211 moves downward, the sliding frame 209 will be driven downward to close the channel, and the liquid inside the squeeze box 210 will be directly injected into the interior of the valve body as the piston plate 211 is pressed downward, so as to achieve water replenishment and water recycling and reuse.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A control valve body strength testing device, characterized in that: include base(1); A detection component (2) is used to perform strength detection of internal and external pressures on the valve body; A feed assembly (3) for automatically feeding and discharging materials from a valve body under inspection; The detection assembly (2) comprises an external pressure detection device, an internal pressure detection device and a power element; The power element drives the external pressure detection device to detect the strength of the valve body surface and also drives the internal pressure detection device to detect the fluid injection pressure inside the valve body; The power element is a hydraulic cylinder (201); The external pressure detection device comprises a slide seat (202), the slide seat (202) is connected to the output end of the hydraulic cylinder (201), the slide seat (202) is slidably connected in the seat body (1), the bottom of the slide seat (202) is slidably connected to two slide rods (204), and the bottom of the slide rod (204) is connected to a pressure plate (203); A compression spring (205) is sleeved on the surfaces of the two slide bars (204), one end of the compression spring (205) is connected to the slide seat (202), and the other end of the compression spring (205) is connected to the pressure plate (203), and a contact groove (206) matching the surface of the valve body is formed at the bottom of the pressure plate (203); The internal pressure detection device comprises a support plate (207), the support plate (207) being fixed on the output shaft of the hydraulic cylinder (201), the support plate (207) being connected to a connecting sleeve (208), the bottom of the connecting sleeve (208) being connected to a piston sheet (211), the surface of the piston sheet (211) being slidably connected to an extrusion box (210), the interior of the extrusion box (210) being provided with liquid, the bottom of the extrusion box (210) being connected to a drainage pipe (212), one end of the drainage pipe (212) being connected to a detection valve body, and a sealing device being provided on the drainage pipe (212).

2. A control valve body strength testing device according to claim 1, characterized in that: The sealing device comprises an extrusion frame (214), the extrusion frame (214) being connected to the support plate (207) via a shaft rod, a sealing sleeve (213) being slidably connected to the surface of the extrusion frame (214), the sealing sleeve (213) being slidably connected to the drainage tube (212), and a rubber ring being connected to one side of the sealing sleeve (213).

3. A control valve body strength testing device according to claim 2, characterized in that: The sealing sleeve (213) is provided with two sliding grooves (2131), and the extrusion frame (214) is provided with an inclined surface, which is slidably connected to the sliding grooves (2131).

4. A control valve body strength testing device according to claim 3, characterized in that: The feeding assembly (3) comprises a rotating shaft (219), the surface of the rotating shaft (219) being fixedly connected to a support frame (220), the support frame (220) being provided with a V-shaped groove, the surface of the rotating shaft (219) being fixedly connected to a fixed gear (218), the surface of the fixed gear (218) being meshed with a toothed plate (217), and the toothed plate (217) being fixed on a sliding frame (209).

5. A control valve body strength testing device according to claim 4, characterized in that: The feed assembly (3) further comprises a feed rack (301) and a discharge rack (302), wherein the feed rack (301) and the discharge rack (302) are both formed by two connecting rods, and the feed rack (301) and the discharge rack (302) are both connected to the base body (1), and the two connecting rods of the discharge rack (302) are arranged one high and one low.

6. A control valve body strength testing device according to claim 5, characterized in that: The invention also comprises a circulation component (4), wherein the circulation component (4) comprises a water tank (401), wherein the water tank (401) is located below the discharging frame (302), wherein a water pump is arranged inside the water tank (401), wherein the output end of the water pump is connected to a return pipe (402), wherein one end of the return pipe (402) is connected to a water tank (403), wherein one side of the water tank (403) is connected to a water diversion pipe (404), wherein one end of the water diversion pipe (404) is connected to a plug sleeve (216), wherein the plug sleeve (216) is slidably connected to a sliding frame (209), and wherein a water inlet hole (215) is provided on the sliding frame (209).

7. A control valve body strength testing device according to claim 6, characterized in that: The piston plate (211) is threadedly connected to the connecting sleeve (208) via a screw rod, and a shifting ball is connected to the piston plate (211).

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