Valve body end face machining device

Abstract

The invention relates to the technical field of spherical surface grinding, and provides a valve body end face machining device. A ball valve clamping piece; the grinding pieces are mounted at the top end of the base in a bilateral symmetry manner; the test tube is provided with a liquid conveying channel and a limiting groove; the swing driving part is used for driving the test tube to swing; the bearing block is provided with a liquid conveying piece and is used for storing the cutting liquid at the top end of the test tube; the traction piece is arranged in the test tube in a sliding manner and is movably arranged below the bearing block; and the lifting driving piece is used for driving the traction piece to move up and down. According to the invention, the bearing block and the traction piece are arranged in the test tube from top to bottom, the storage space is arranged on the bearing block, the cutting fluid is injected into the storage space, and the traction piece moves downwards to drive the bearing block to move downwards synchronously, so that the fluid conveying channel is opened, and the cutting fluid in the storage space flows into the bottom end of the test tube; and the sealing performance of the joint of the test tube and the ball valve is tested.

Description

Technical Field

[0001] The invention relates to the technical field of spherical surface grinding, in particular to a valve body end surface processing device. Background Art

[0002] The valve body end face processing device is a special equipment used for precision processing of the end face of the ball valve body. Its core function is to ensure that the flatness, verticality and roughness of the two end faces of the valve body meet the assembly requirements through cutting, grinding and other processes.

[0003] Since the sealing surface of the ball valve needs to achieve extremely high smoothness and sphericity to avoid medium leakage due to microscopic bumps, the ball valve needs to pass a strict sealing test to verify its sealing performance after polishing.

[0004] Generally, when conducting a sealing test on a ball valve, it is necessary to first remove the polished ball valve and conduct a sealing test. If the sealing of the ball valve fails to meet the requirements, the ball valve must be clamped on the processing device again for a second polishing. When the ball valve is installed for the second time, the relative position of the ball and the valve seat will shift, which may cause the originally qualified sealing surface to be mistakenly judged as a leak due to poor fit, resulting in excessive trimming of the ball valve surface. Summary of the Invention

[0005] Based on this, it is necessary to provide a valve body end face processing device that can test the sealing performance of a ball valve in order to address the above technical issues.

[0006] The present invention provides a valve body end surface processing device, comprising: base; A ball valve clamping member is mounted on the top of the base in a front-to-back manner; A polishing piece is installed on the top of the base in a bilaterally symmetrical manner; A test tube having a liquid infusion channel and a limit groove, used to construct a local water storage area together with the surface of the ball valve; a swing driving member, mounted at the rear end of the base, for driving the test tube to swing; a bearing block having an infusion piece, slidably mounted in the test tube and used for storing cutting fluid at the top end of the test tube; a traction member, slidably mounted in the test tube and movably mounted below the bearing block; A lifting drive member, connected to the traction member by transmission, for driving the traction member to move up and down; The top of the carrying block is provided with side partitions and a top partition, the top partition and the carrying block are connected to the top and bottom ends of the side partitions respectively, and the side partitions, the top partition, the carrying block and the test tube together enclose a storage space; The bottom end of the traction member is located below the bearing block, the top end of the traction member passes through the bearing block and is connected to the lifting drive member, and the traction member is transmission-connected to the infusion member.

[0007] Furthermore, the test tube has an infusion trough on its side wall, and two groups of L-shaped blocks are provided on its inner wall. The two groups of L-shaped blocks are centrally symmetrically arranged, and the infusion channel is formed by the infusion trough and the two groups of L-shaped blocks. A closing spring is installed in abutment with the side wall of the infusion tank facing away from the test tube, and a closing block is installed in abutment with the other end of the closing spring. The closing block is in the shape of a Chinese character "匚" and is slidably installed in the infusion tank; Wherein, in the initial state, the two ends of the closing block are respectively precisely aligned with the two groups of channel openings of the infusion channel.

[0008] Furthermore, the traction member includes a traction frame and a traction block, the traction frame is fixedly mounted on the top of the traction block, the traction block is in the shape of an inverted truncated cone, the traction frame is symmetrically provided with a driving groove, the driving groove includes a vertical groove and a triangular groove, a "<"-shaped block is provided in the triangular groove, the "<"-shaped block and the inner wall of the triangular groove enclose a "<"-shaped guide channel, and the distance between the bottom end of the triangular groove and the traction block is greater than the height of the triangular groove; The guide channel includes an open channel and a closed channel, the top end of the open channel is connected to the bottom end of the closed channel, and the bottom end of the vertical groove is connected to the top end of the closed channel; The bottom end of the "<"-shaped block has a contraction groove, and a contraction slider is slidably installed in the contraction groove. The end of the contraction slider extending out of the contraction groove is fixedly connected to a contraction plate, and the top end of the contraction slider is abutted with a contraction spring, and the end of the contraction spring facing away from the contraction slider abuts against the top end of the contraction groove.

[0009] Furthermore, the top partition has an exhaust channel, and a top plate is slidably installed on the exhaust channel. The top plate is I-shaped, and the top of the top plate is fixedly connected to a movable support plate. The top of the top partition has a fixed support plate, and a sealing spring is installed between the fixed support plate and the movable support plate.

[0010] Furthermore, a penetration channel is formed through the top of the bearing block adjacent to the infusion tank, the penetration channel matches the shape of the bottom end of the traction frame, and the traction frame is slidably installed in the penetration channel; The bearing block is provided with a blocking chute, which is divided by the side partition to form a closed chute and an open chute, the closed chute is located below the storage space, and the open chute is symmetrically arranged along both sides of the through channel, and the infusion piece is slidably installed in the blocking chute; The top of the bearing block adjacent to the side partition plate is provided with a liquid drain port, and the liquid drain port is arranged through the top end of the closed groove.

[0011] Furthermore, the infusion component includes a driven rod, a driven plate and a moving block, wherein the driven rod is fixedly connected to the top end of the driven plate, and the moving block is fixedly installed at the bottom end of the driven plate; The movable block is provided with a drainage channel along its length, and a drainage hole is provided on the top of one end of the movable block adjacent to the storage space; The side wall of the blocking chute has a movable groove, the surface of the movable block facing away from the penetration channel has a T-shaped block, and a return spring is installed in contact with the inner wall of one end of the blocking chute adjacent to the infusion tank, and the other end of the return spring is in contact with the T-shaped block; Wherein, in the initial state, the driven rod is located at the bottom end of the opening channel.

[0012] Furthermore, a reflux pipe is installed through the side wall of the test tube away from the infusion tank. The reflux pipe is in the shape of a Chinese character "匚". The top of the reflux pipe has a first reflux port, the height of the first reflux port is higher than the top channel port of the infusion channel, the bottom of the reflux pipe has a second reflux port, the top pipe of the reflux pipe is installed with a first one-way valve, and the bottom pipe of the reflux pipe is installed with a second one-way valve. The first one-way valve cooperates with the second one-way valve to allow water in the return pipe to flow only from the second return port to the first return port.

[0013] Furthermore, the return pipe has a disassembly and assembly port on the pipe wall corresponding to the first one-way valve and the second one-way valve, and the disassembly and assembly port is in an inverted convex shape. A blocking plate and a sealing plate are installed in the disassembly and assembly port from bottom to top, and the blocking plate is T-shaped. The blocking plate matches the shape of the bottom end of the disassembly and assembly port, and the sealing plate is detachably installed on the top end of the disassembly and assembly port by means of bolt connection.

[0014] Furthermore, a movable groove is provided in the center of the top of the blocking plate, and a traction handle is installed through the movable groove. The traction handle is in an I-shape, and an upward spring is installed in abutment with the inner bottom wall of the movable groove, and the top end of the upward spring is in abutment with the bottom end of the traction handle.

[0015] Furthermore, the test tube has a liquid injection port on a side wall adjacent to the reflux pipe, a sealing cap is threadedly mounted on the liquid injection port, a pressure plate is rotatably mounted on the sealing cap, the pressure plate is composed of a straight rod and a U-shaped rod, the top end of the straight rod is rotatably connected to the sealing cap, and the bottom end of the straight rod is fixedly connected to the top end of the U-shaped rod; When the sealing cover is screwed onto the liquid filling port, the U-shaped rod body just abuts against the tops of the two sets of sealing plates. Beneficial effects

[0016] The above-mentioned valve body end face processing device is configured by arranging a supporting block and a traction member from top to bottom in a test tube, providing a storage space on the supporting block, injecting cutting fluid into the storage space, and using the downward movement of the traction member to drive the supporting block to move downward synchronously. The infusion channel is opened to allow the cutting fluid in the storage space to flow into the bottom end of the test tube, thereby testing the sealing of the connection between the test tube and the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is the overall structural diagram of the valve body end surface processing device; Figure 2 This is a cross-sectional view of a test tube of a valve body end surface processing device; Figure 3 This is a cross-sectional view of the infusion tank of the valve body end surface processing device; Figure 4 It is the structural diagram of the closing block of the valve body end surface processing device; Figure 5 This is a structural diagram of the traction frame of the valve body end surface processing device; Figure 6 This is a structural diagram of the moving block of the valve body end surface processing device; Figure 7 This is a cross-sectional view of the bearing block of the valve body end surface processing device; Figure 8 This is a structural diagram of the side diaphragm and top diaphragm of the valve body end surface processing device; Figure 9 This is a top plate structural diagram of the valve body end surface processing device; Figure 10 This is a structural diagram of the drainage channel and drainage hole of the valve body end surface processing device; Figure 11 This is a structural diagram of the pressure plate of the valve body end surface processing device; Figure 12 For valve body end surface processing device Figure 3 Enlarged view of detail A.

[0019] Reference numerals: 1. Base; 2. Ball valve holder; 3. Polishing part; 4. Swing drive; 5. Test tube; 51. Infusion channel; 52. Limiting groove; 53. Infusion groove; 53-1. L-shaped block; 53-2. Closing spring; 53-3. Closing block; 54. Return pipe; 54-1. First return port; 54-2. First one-way valve; 54-3. Second return port; 54-4. Second one-way valve; 54-5. Disassembly port; 5 4-6, blocking plate; 54-61, movable groove; 54-62, traction handle; 54-64, upward spring; 54-8, sealing plate; 55, liquid injection port; 56, sealing cover; 57, pressing plate; 57-1, straight rod; 57-2, 匚-shaped rod; 6, bearing block; 61, infusion part; 61-1, driven rod; 61-2, driven plate; 61-3, moving block; 61-31, drainage channel; 61-32 , drainage hole; 62, side partition; 63, top partition; 63-1, exhaust channel; 63-2, top plate; 63-3, movable plate; 63-4, fixed plate; 63-5, sealing spring; 64, storage space; 65, through the channel; 66, blocking chute; 66-1, closed slot; 66-2, open slot; 66-21, movable slot; 66-22, T-block; 66-23, reset spring; 67, drainage Mouth; 7, traction member; 71, traction frame; 71-1, driving groove; 71-11, vertical groove; 71-13, triangular groove; 71-12, "<"-shaped block; 71-15, contraction groove; 71-14, contraction slider; 71-16, contraction plate; 71-18, contraction spring; 71-2, guide channel; 71-21, opening channel; 71-23, closing channel; 72, traction block; 8, lifting drive member. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 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 making creative efforts shall fall within the scope of protection of the present invention.

[0021] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present invention are for illustrative purposes only and do not represent the only implementation method.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0023] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] Unless otherwise defined, all technical and scientific terms used in the present description have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this description are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used in this description includes any and all combinations of one or more of the associated listed items.

[0025] The following combination Figures 1-12 The valve body end surface machining apparatus of the present invention is described.

[0026] like Figure 1 、 Figure 2 and Figure 3 As shown, in one embodiment, a valve body end surface processing device includes a base 1, a ball valve clamping part 2, a grinding part 3, a swing driving part 4, a test tube 5, a bearing block 6, a traction part 7 and a lifting driving part 8.

[0027] The ball valve clamping member 2 is mounted on the top of the base 1 in a front-to-back manner.

[0028] It should be noted that the ball valve holder 2 is used to drive the ball valve to rotate for grinding. The driving structure of the ball valve holder 2 to drive the ball valve to rotate is a conventional technology in this field and will not be described in detail here.

[0029] The grinding piece 3 is installed on the top of the base 1 in a bilaterally symmetrical manner.

[0030] It should be noted that the grinding member 3 includes a grinding claw, a first rotary drive motor and a first swing bracket. The rotary drive motor is symmetrically mounted at both ends of the first swing bracket, and the grinding claw is transmission-mounted on the first rotary drive motor.

[0031] The test tube 5 is provided with a liquid conveying channel 51 and a limiting groove 52 for constructing a local water storage area together with the surface of the ball valve.

[0032] The swing driving member 4 is installed at the rear end of the base 1 and used for driving the test tube 5 to swing.

[0033] Preferably, the swing driving member 4 comprises a second swing support, a slide cylinder, a motor base and a second rotary motor, the bottom end of the slide cylinder is installed on the second swing support, the top end of the slide cylinder is fixedly connected with the motor base, the second rotary motor is installed on the motor base, the output end of the second rotary motor is fixedly connected with a support block, and the test tube 5 is fixedly installed on the support block.

[0034] It should be noted that the first swing support and the second swing support both adopt a servo motor as a driving source, and utilize a crank connecting rod structure to realize swinging, so as to convert the rotary motion of the motor into the swinging of the first swing support and the second swing support. Here, it is a conventional structure, which will not be described in detail.

[0035] The carrying block 6 is provided with a liquid conveying member 61 and is slidably installed in the test tube 5, and is used for storing cutting fluid at the top end of the test tube 5.

[0036] The traction member 7 is slidably installed in the test tube 5 and movably installed below the carrying block 6.

[0037] The lifting driving member 8 is in transmission connection with the traction member 7 and is used for driving the traction member 7 to move up and down.

[0038] Preferably, the lifting driving member 8 is an electric push rod.

[0039] The top of the carrying block 6 is provided with a side partition plate 62 and a top partition plate 63, the top partition plate 63 is connected with the carrying block 6 at the top end and the bottom end of the side partition plate 62 respectively, the side partition plate 62, the top partition plate 63, the carrying block 6 and the test tube 5 together enclose a storage space 64, and the storage space 64 is used for storing cutting fluid.

[0040] The bottom end of the traction member 7 is located below the carrying block 6, the top end of the traction member 7 penetrates through the carrying block 6 and is connected with the lifting driving member 8, and the traction member 7 is in transmission connection with the liquid conveying member 61.

[0041] Specifically, when testing the sealing of the ball valve, the lower end of the test tube 5 is in contact with the surface of the ball valve, and the electric push rod is started. The electric push rod drives the traction member 7 to move downward, and the traction member 7 drives the bearing block 6 to move downward. When the bearing block 6 reaches the limit groove 52, the infusion member 61 is aligned with the input end of the infusion channel 51, and the traction member 7 continues to move downward, driving the infusion member 61 to move horizontally toward the input end of the infusion channel 51. The input end of the infusion channel 51 is opened, and the storage space 64 is opened. The cutting fluid in the storage space 64 is injected into the infusion channel 51 through the infusion member 61 and then flows to the bottom of the traction member 7. After the cutting fluid in the storage space 64 completely flows to the bottom of the traction member 7, the traction member 7 continues to move downward, and the traction member 7 drives the infusion member 61 to move in the opposite direction, closing the liquid outlet of the storage space 64. As the traction member 7 continues to move downward, the traction member 7 begins to press down the liquid below. On the one hand, the liquid at the bottom end of the test tube 5 is pressurized to simulate the actual pressure environment of the ball valve in the pipeline to test the sealing of the ball valve.

[0042] If there is leakage, the ball valve needs to be further polished. The cutting fluid remaining on the surface of the ball valve will serve as a lubricant for the subsequent polishing. If there is no leakage, the ball valve does not need to be polished again and the polished ball valve can be removed.

[0043] The above method can achieve seamless connection of the "polishing-testing" process, shorten the ball valve polishing test cycle, and the clamping state of the ball valve is always consistent, which can truly reflect the matching state of the ball valve sealing surface after polishing and avoid "misjudgment" caused by installation errors.

[0044] It should be noted that when the sealing surfaces at both ends of the ball valve need to be tested, the ball valve can be rotated 180 degrees by the ball valve clamp 2 to switch the test end of the ball valve.

[0045] In this embodiment, the side wall of the test tube 5 has an infusion groove 53, and the inner wall of the infusion groove 53 has two groups of L-shaped blocks 53-1. The two groups of L-shaped blocks 53-1 are arranged symmetrically with respect to the center. The infusion channel 51 is formed by the infusion groove 53 and the two groups of L-shaped blocks 53-1.

[0046] A closing spring 53 - 2 is mounted against the side wall of the infusion tank 53 facing away from the test tube 5 , and a closing block 53 - 3 is mounted against the other end of the closing spring 53 - 2 . The closing block 53 - 3 is in the shape of a Chinese character "匚" and is slidably mounted in the infusion tank 53 .

[0047] In the initial state, the two ends of the closing block 53 - 3 are precisely aligned with the two groups of channel openings of the infusion channel 51 .

[0048] like Figure 4 、 Figure 5 and Figure 6As shown, in one embodiment, the traction member 7 includes a traction frame 71 and a traction block 72. The traction frame 71 is fixedly mounted on the top of the traction block 72. The traction block 72 is in the shape of an inverted frustum. The traction frame 71 is symmetrically provided with a driving groove 71-1. The driving groove 71-1 includes a vertical groove 71-11 and a triangular groove 71-13. The triangular groove 71-13 has a "<"-shaped block 71-12. The "<"-shaped block 71-12 and the inner wall of the triangular groove 71-13 are enclosed to form a "<"-shaped guide channel 71-2. The distance between the bottom end of the triangular groove 71-13 and the traction block 72 is greater than the height of the triangular groove 71-13.

[0049] The guide channel 71-2 includes an open channel 71-21 and a closed channel 71-23. The top of the open channel 71-21 is connected to the bottom of the closed channel 71-23, and the bottom of the vertical groove 71-11 is connected to the top of the closed channel 71-23.

[0050] The bottom end of the "<"-shaped block 71-12 has a contraction groove 71-15, in which a contraction slider 71-14 is slidably installed. One end of the contraction slider 71-14 extending out of the contraction groove 71-15 is fixedly connected to a contraction plate 71-16, and a contraction spring 71-18 is installed in contact with the top end of the contraction slider 71-14. The end of the contraction spring 71-18 facing away from the contraction slider 71-14 is in contact with the top end of the contraction groove 71-15.

[0051] like Figure 7 As shown, in one embodiment, the top partition 63 has an exhaust channel 63-1, and a top plate 63-2 is slidably installed on the exhaust channel 63-1. The top plate 63-2 is in an I-shape, and the top of the top plate 63-2 is fixedly connected to a movable support plate 63-3. The top of the top partition 63 has a fixed support plate 63-4, and a sealing spring 63-5 is installed in contact with the fixed support plate 63-4 and the movable support plate 63-3.

[0052] Preferably, the top plate 63-2 includes a long straight plate, a short straight plate and a connecting plate, the long straight plate and the short straight plate are fixedly connected to the top and bottom ends of the connecting plate respectively, and the top end of the traction frame 71 has a closing drive part, wherein, when the exhaust channel 63-1 is sealed, the long straight plate and the short straight plate respectively block the two end openings of the exhaust channel 63-1.

[0053] Preferably, the top end of the test tube 5 has an exhaust hole.

[0054] Specifically, in the initial state, the height of the closing drive part of the traction frame 71 is higher than the top height of the straight long plate. After the supporting block 6 reaches the position of the limit groove 52, when the traction frame 71 moves downward relative to the supporting block 6, the traction frame 71 moves downward relative to the straight long plate. When the closing drive part no longer abuts against the straight long plate, the straight long plate, the straight short plate and the connecting plate are pushed by the sealing spring 63-5 to move horizontally to one side of the exhaust channel 63-1, thereby opening the exhaust channel 63-1.

[0055] It should be noted that there is a locking groove on the supporting block 6, in which a limit spring and a limit block are installed. The limit spring is arranged along the radial direction of the supporting block 6, one end of the limit spring abuts against the inner wall of the locking groove, and the other end abuts against the limit block.

[0056] The limiting block is in the shape of a right-angled trapezoid, with the right-angled waist of the limiting block located at its bottom end and the non-right-angled waist of the limiting block located at its top end. The shape of the limiting groove 52 matches the shape of the limiting block.

[0057] like Figure 8 and Figure 9 As shown, in one embodiment, a through-channel 65 is provided through the top of the supporting block 6 adjacent to the infusion tank 53 . The through-channel 65 matches the shape of the bottom end of the traction frame 71 , and the traction frame 71 is slidably installed in the through-channel 65 .

[0058] The supporting block 6 has a blocking groove 66, which is divided by the side partition 62 to form a closed groove 66-1 and an open groove 66-2. The closed groove 66-1 is located below the storage space 64, and the open groove 66-2 is symmetrically arranged along both sides of the through channel 65. The infusion piece 61 is slidably installed in the blocking groove 66.

[0059] The top of the supporting block 6 adjacent to the side partition 62 has a drain port 67 , and the drain port 67 is provided through the top of the closed groove 66 - 1 .

[0060] like Figure 10 As shown, in one embodiment, the infusion component 61 includes a driven rod 61-1, a driven plate 61-2 and a moving block 61-3, the driven rod 61-1 is fixedly connected to the top end of the driven plate 61-2, and the moving block 61-3 is fixedly installed at the bottom end of the driven plate 61-2.

[0061] A drainage channel 61 - 31 is formed through the moving block 61 - 3 along its length, and a drainage hole 61 - 32 is formed through the top of one end of the moving block 61 - 3 adjacent to the storage space 64 .

[0062] The side wall of the blocking chute 66 has a moving groove 66-21, and the surface of the moving block 61-3 facing away from the penetration channel 65 has a T-shaped block 66-22. A return spring 66-23 is installed in contact with the inner wall of one end of the blocking chute 66 adjacent to the infusion tank 53, and the other end of the return spring 66-23 is in contact with the T-shaped block 66-22.

[0063] In the initial state, the driven rod 61 - 1 is located at the bottom end of the opening channel 71 - 21 .

[0064] like Figure 11 As shown, in one embodiment, a reflux pipe 54 is installed through the side wall of the test tube 5 away from the infusion tank 53. The reflux pipe 54 is in the shape of a Chinese character "匚". The top of the reflux pipe 54 has a first reflux port 54-1. The height of the first reflux port 54-1 is higher than the top channel port of the infusion channel 51. The bottom of the reflux pipe 54 has a second reflux port 54-3. A first one-way valve 54-2 is installed in the top pipe of the reflux pipe 54, and a second one-way valve 54-4 is installed in the bottom pipe of the reflux pipe 54.

[0065] The first one-way valve 54 - 2 cooperates with the second one-way valve 54 - 4 to allow the water in the return pipe 54 to flow only from the second return port 54 - 3 to the first return port 54 - 1 .

[0066] Preferably, the first one-way valve 54-2 includes a first upper block, a first drive spring, a first blocking block and a second upper block. The first upper block is fixed at the position of the first reflux port 54-1, one end of the first drive spring is in contact with the first upper block, and the other end of the first drive spring is in contact with the first blocking block. The first blocking block is assembled in the reflux pipe 54 in a sliding manner, and the first blocking block is movable along the axial direction of the pipe. The second upper block is fixed inside the reflux pipe 54, and its position corresponds to the end of the first blocking block away from the first drive spring.

[0067] Preferably, the second one-way valve 54-4 includes a first lower block, a second driving spring, a second blocking block and a second lower block. The first lower block is fixed inside the return pipe 54, one end of the second driving spring is in contact with the first lower block, and the other end of the second driving spring is in contact with the second blocking block. The second blocking block is assembled in the return pipe 54 in a sliding manner, and the second blocking block is movable along the axial direction of the pipeline. The second lower block is fixed at the position of the second return port 54-3, and its position corresponds to the end of the second block away from the second driving spring. When the water flows back to the storage space 64, the water flow pushes the second blocking block, and the second blocking block compresses the second driving spring and separates from the second lower block.

[0068] Specifically, when testing the sealing of the ball valve, the lower end of the test tube 5 is placed against the surface of the ball valve, the electric push rod is started, and the electric push rod drives the traction member 7 to move downward. The return spring 66-23 limits the translation of the moving block 61-3 through the T-shaped block 66-22. The moving block 61-3 limits the translation of the driven rod 61-1 through the driven plate 61-2, causing the driven rod 61-1 to be limited at the bottom end of the opening channel 71-21. When the traction member 7 starts to move downward, it drives the bearing block 6 to move downward synchronously. When the bearing block 6 reaches the limit groove 52, the limit block is driven by the limit spring to be stuck in the limit groove 52. The bottom end of the limit block is flat, and the limit block is blocked from moving downward by the inner bottom wall of the limit groove 52, causing the bearing block 6 to stay in this position.

[0069] At this time, the moving block 61-3 is aligned with the top of the infusion channel 51, the traction member 7 continues to move downward, the traction frame 71 moves downward and drives the moving block 61-3 to move horizontally toward the infusion channel 51 through the open channel 71-21. At this time, the T-shaped block 66-22 obtains the translation channel by squeezing the return spring 66-23. In this process, on the one hand, the moving block 61-3 pushes the closing block 53-3 away from the channel opening of the infusion channel 51, and on the other hand, the moving block 61-3 moves out of the closed groove 66-1, and the drainage hole 61-32 moves to below the drainage port 67. The cutting fluid in the storage space 64 is injected into the infusion channel 51 through the drainage port 67, the drainage hole 61-32, and the drainage channel 61-31 in turn, and then flows to the top of the test tube 5, that is, the top of the ball valve, and the swing motor is started to drive the test tube 5 to slide along the surface of the ball valve to perform a preliminary test on the sealing of the ball valve.

[0070] After completing the preliminary test, if there is leakage, continue to polish the ball valve; if there is no leakage, continue to drive the traction member 7 downward, and the traction frame 71 drives the driven rod 61-1 to move in the opposite direction through the closed channel 71-23. The driven rod 61-1 drives the moving block 61-3 to move synchronously through the driven plate 61-2, and the moving block 61-3 moves back to the initial position, and the storage space 64 is closed again.

[0071] As the traction member 7 continues to descend, the traction block 72 begins to press down the liquid below, pressurizing the liquid at the bottom of the test tube 5, simulating the actual pressure environment of the ball valve in the pipeline, and further testing the sealing performance of the ball valve.

[0072] During further testing of the sealing performance of the ball valve, the traction block 72 continues to move downward, and part of the liquid at the bottom of the test tube 5 is pressed into the return pipe 54. The water flow entering the return pipe 54 pushes the second block, and the second block compresses the second drive spring and separates from the second lower block. In this way, the water flows between the first one-way valve 54-2 and the second one-way valve 54-4. When the water flows back to the storage space 64, the water flow pushes the first block, and the first block compresses the first drive spring and separates from the second upper block. In this way, the cutting fluid flows back to the storage space 64.

[0073] After completing the test of the sealing of the ball valve, the traction member 7 is driven to move upward. When the traction block 72 approaches the supporting block 6, the driven rod 61-1 moves down from the top of the closed channel 71-23 to the top of the retraction plate 71-16. As the retraction rod follows the traction frame 71 to move upward, the retraction rod is squeezed open by the driven rod 61-1, and the driven rod 61-1 enters the bottom of the open channel 71-21.

[0074] After the top end of the traction block 72 abuts against the bottom end of the supporting block 6, as the supporting block 6 moves upward following the traction block 72, the limit block is squeezed into the locking groove by the inner top wall of the limit groove 52. At the same time, the closing drive part on the traction frame 71 abuts against the long plate and pushes the long plate and the short plate to block the exhaust channel 63-1 again.

[0075] In this embodiment, the wall of the return pipe 54 corresponding to the first one-way valve 54-2 and the second one-way valve 54-4 has a disassembly port 54-5 (see Figure 3 ), the disassembly and assembly port 54-5 is in an inverted convex shape, and a blocking plate 54-6 and a sealing plate 54-8 are installed from bottom to top in the disassembly and assembly port 54-5. The blocking plate 54-6 is T-shaped, and the blocking plate 54-6 matches the shape of the bottom end of the disassembly and assembly port 54-5. The sealing plate 54-8 is detachably installed at the top end of the disassembly and assembly port 54-5 by means of bolt connection.

[0076] Preferably, the bottom end of the blocking plate 54 - 6 is wrapped with a rubber sleeve to enhance the sealing performance of the blocking plate 54 - 6 .

[0077] like Figure 12 As shown, in one embodiment, a movable groove 54-61 is provided in the center of the top of the blocking plate 54-6, and a traction handle 54-62 is installed through the movable groove 54-61. The traction handle 54-62 is in an I-shape, and an upward spring 54-64 is installed in abutment with the inner bottom wall of the movable groove 54-61. The top end of the upward spring 54-64 abuts against the bottom end of the traction handle 54-62.

[0078] See also Figure 3 In this embodiment, the side wall of the test tube 5 adjacent to the reflux pipe 54 has a liquid injection port 55, and a sealing cover 56 is threadedly installed on the liquid injection port 55. A pressure plate 57 is rotatably installed on the sealing cover 56. The pressure plate 57 consists of a straight rod body 57-1 and a U-shaped rod body 57-2. The top end of the straight rod body 57-1 is rotatably connected to the sealing cover 56, and the bottom end of the straight rod body 57-1 is fixedly connected to the top end of the U-shaped rod body 57-2.

[0079] When the sealing cover 56 is screwed onto the liquid filling port 55 , the U-shaped rod 57 - 2 just abuts against the tops of the two sets of sealing plates 54 - 8 .

[0080] Specifically, when replenishing cutting fluid into the storage space 64, the motor is rotated to adjust the test tube 5 to a horizontal state, and the sealing cover 56 is unscrewed from the liquid filling port 55. When removing the sealing cover 56, the pressure plate 57 is also removed from the sealing plate 54-8, so that the staff can remove the sealing plate 54-8 and the blocking plate 54-6 to clean the cutting fluid in the tube. After cleaning, the first one-way valve 54-2 and the second one-way valve 54-4 are checked through the disassembly and assembly port 54-5. If replacement is required, the disassembly and assembly can be completed through this port.

[0081] After the inspection of the first one-way valve 54-2 and the second one-way valve 54-4 is completed, the blocking plate 54-6 and the sealing plate 54-8 are installed into the disassembly and assembly port 54-5 in turn. When installing the sealing plate 54-8, the traction handle 54-62 is pressed down to compress the upward spring 54-64, which can enhance the sealing tightness of the blocking plate 54-6 on the disassembly and assembly port 54-5. At the same time, the pressure plate 57 is pressed down on the top of the sealing plate 54-8 to prevent the middle part of the sealing plate 54-8 from being pushed upward by the spring and deformed.

[0082] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above-described embodiments merely illustrate several embodiments 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 a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of the present invention. Therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. A valve body end surface processing device, characterized in that: Comprising: Base (1); Ball valve clamping piece (2), installed front and back at the top of the base (1); Grinding piece (3), installed symmetrically left and right at the top of the base (1); Test tube (5), having an infusion channel (51) and a limiting groove (52), used to jointly construct a local water storage area with the ball valve surface; Swing driving piece (4), installed at the rear end of the base (1), used to drive the test tube (5) to swing; Carrying block (6), having an infusion piece (61), slidably installed in the test tube (5), used to store cutting fluid at the top of the test tube (5); Traction piece (7), slidably installed in the test tube (5) and movably installed below the carrying block (6); Lifting driving piece (8), in transmission connection with the traction piece (7), used to drive the traction piece (7) to move up and down; The top of the carrying block (6) has side partitions (62) and top partitions (63), the top partition (63) and the carrying block (6) are respectively connected to the top and bottom of the side partition (62), and the side partition (62), the top partition (63), the carrying block (6) and the test tube (5) jointly enclose a storage space (64); The bottom end of the traction piece (7) is located below the carrying block (6), the top end of the traction piece (7) passes through the carrying block (6) and is connected to the lifting driving piece (8), and the traction piece (7) is in transmission connection with the infusion piece (61).

2. The valve body end surface processing device according to claim 1, characterized in that: The side wall of the test tube (5) has an infusion groove (53), the inner wall of the infusion groove (53) has two groups of L-shaped blocks (53-1), the two groups of L-shaped blocks (53-1) are arranged centrosymmetrically, and the infusion channel (51) is formed by the infusion groove (53) and the two groups of L-shaped blocks (53-1) jointly enclosing; A closing spring (53-2) is abutted and installed on the side wall of the infusion groove (53)背离 the test tube (5), and the other end of the closing spring (53-2) is abutted and installed with a closing block (53-3), the closing block (5)呈 "匚” 字形, and the closing block (53-3) is slidably installed in the infusion groove (53); Wherein, in the initial state, the two ends of the closing block (53-3) are respectively aligned precisely with the two channel openings of the infusion channel (51).

3. The valve body end surface processing device according to claim 2, characterized in that: The traction member (7) comprises a traction frame (71) and a traction block (72), the traction frame (71) being fixedly mounted on the top of the traction block (72), the traction block (72) being in the shape of an inverted truncated cone, the traction frame (71) being symmetrically provided with a driving groove (71-1), the driving groove (71-1) comprising a vertical groove (71-11) and a triangular groove (71-13), a "<"-shaped block (71-12) being provided in the triangular groove (71-13), the "<"-shaped block (71-12) and the inner wall of the triangular groove (71-13) being enclosed to form a "<"-shaped guide channel (71-2), the distance between the bottom end of the triangular groove (71-13) and the traction block (72) being greater than the height of the triangular groove (71-13); The guide channel (71-2) comprises an open channel (71-21) and a closed channel (71-23); the top end of the open channel (71-21) is connected to the bottom end of the closed channel (71-23); and the bottom end of the vertical groove (71-11) is connected to the top end of the closed channel (71-23); The bottom end of the "<"-shaped block (71-12) has a contraction groove (71-15), a contraction slider (71-14) is slidably mounted in the contraction groove (71-15), one end of the contraction slider (71-14) extending out of the contraction groove (71-15) is fixedly connected to a contraction plate (71-16), a contraction spring (71-18) is abutted against the top end of the contraction slider (71-14), and one end of the contraction spring (71-18) facing away from the contraction slider (71-14) abuts against the top end of the contraction groove (71-15).

4. The valve body end surface processing device according to claim 3, characterized in that: The top partition plate (63) has an exhaust passage (63-1), a top plate (63-2) is slidably mounted on the exhaust passage (63-1), the top plate (63-2) is in an I-shape, a movable abutment plate (63-3) is fixedly connected to the top end of the top plate (63-2), a fixed abutment plate (63-4) is mounted on the top of the top partition plate (63), and a sealing spring (63-5) is mounted in abutment with the fixed abutment plate (63-4) and the movable abutment plate (63-3).

5. The valve body end surface processing device according to claim 4, characterized in that: The bearing block (6) is provided with a penetration channel (65) at the top adjacent to the infusion tank (53), the penetration channel (65) matches the shape of the bottom end of the traction frame (71), and the traction frame (71) is slidably installed in the penetration channel (65); The bearing block (6) has a blocking chute (66), and the blocking chute (66) is divided by the side partition (62) to form a closed chute (66-1) and an open chute (66-2). The closed chute (66-1) is located below the storage space (64), and the open chute (66-2) is symmetrically arranged along both sides of the through channel (65). The infusion piece (61) is slidably installed in the blocking chute (66); The carrying block (6) has a liquid discharge port (67) near the top of the side partition (62), and the liquid discharge port (67) is disposed through the top end of the closed groove (66-1).

6. The valve body end surface processing device according to claim 5, characterized in that: The infusion member (61) includes a driven rod (61-1), a driven plate (61-2) and a moving block (61-3). The driven rod (61-1) is fixedly connected to the top end of the driven plate (61-2), and the moving block (61-3) is fixedly installed at the bottom end of the driven plate (61-2); The moving block (61-3) is provided with a liquid discharge channel (61-31) penetrating along the length direction, and a liquid discharge hole (61-32) penetrates through the top of one end of the moving block (61-3) adjacent to the storage space (64); The side wall of the plugging chute (66) has a moving groove (66-21). The surface of the moving block (61-3) facing away from the penetrating channel (65) has a T-shaped block (66-22). A return spring (66-23) is abutted and installed on the inner wall of one end of the plugging chute (66) adjacent to the infusion chute (53), and the other end of the return spring (66-23) abuts against the T-shaped block (66-22); Among them, in the initial state, the driven rod (61-1) is located at the bottom end of the opening channel (71-21).

7. The valve body end surface processing device according to claim 2, characterized in that: A return pipe (54) is penetrated and installed on the side wall of the test tube (5) facing away from the infusion chute (53). The return pipe (54) is in a "C" shape. The top end of the return pipe (54) has a first return port (54-1), and the height of the first return port (54-1) is higher than the top channel opening of the infusion channel (51). The bottom end of the return pipe (54) has a second return port (54-3). A first one-way valve (54-2) is installed in the top pipe of the return pipe (54), and a second one-way valve (54-4) is installed in the bottom pipe of the return pipe (54); Among them, the first one-way valve (54-2) and the second one-way valve (54-4) cooperate to make the water flow in the return pipe (54) only flow from the second return port (54-3) to the first return port (54-1).

8. The valve body end surface processing device according to claim 7, characterized in that: The pipe wall of the return pipe (54) corresponding to the first one-way valve (54-2) and the second one-way valve (54-4) has a disassembly and assembly port (54-5). The disassembly and assembly port (54-5) is in an inverted convex shape. A plugging plate (54-6) and a sealing plate (54-8) are installed in the disassembly and assembly port (54-5) from bottom to top. The plugging plate (54-6) is in a T shape, and the shape of the plugging plate (54-.) 9. The valve body end surface processing device according to claim 8, characterized in that: At the center of the top of the plugging plate (54-6), there is an activity groove (54-61). A traction handle (54-62) is installed through the activity groove (54-61). The traction handle (54-62) is in the shape of a capital letter "I". An upward movement spring (54-64) is installed in contact with the inner bottom wall of the activity groove (54-61). The top end of the upward movement spring (54-64) is in contact with the bottom end of the traction handle (54-62).

10. The valve body end surface processing device according to claim 9, characterized in that: On the side wall of the test tube (5) adjacent to the reflux pipe (54), there is a liquid injection port (55). A sealing cover (56) is installed on the liquid injection port (55) by means of threads. A pressing plate (57) is rotatably installed on the sealing cover (56). The pressing plate (57) is composed of a linear rod body (57-1) and a U-shaped rod body (57-2). The top end of the linear rod body (57-1) is rotatably connected to the sealing cover (56). The bottom end of the linear rod body (57-1) is fixedly connected to the top end of the U-shaped rod body (57-2). Among them, when the sealing cover (56) is screwed onto the liquid injection port (55), the U-shaped rod body (57-2) just abuts against the tops of the two sealing plates (54-8).

Images