Top-mounted valve ball assembling tool

Abstract

The utility model discloses a top-mounted valve ball assembling tool which comprises a bottom plate for valve body connection, a screw and a pulling plate, the bottom plate for valve body connection can be connected to the top of a valve body through a valve stud, and a ball lowering through hole for a ball to pass through is formed in the middle of the bottom plate for valve body connection. A screw through hole is horizontally formed in one side of the bottom plate for valve body connection, the forming direction of the screw through hole is consistent with the direction of the liquid channel, the screw is installed at the screw through hole and is in threaded connection with the screw through hole, and the inner end face of the screw is rotationally connected with the outer end face of the upper portion of the pulling plate. The pulling plate is placed on one side of the ball lowering through hole of the bottom plate for connecting the valve body, and the outer end face of the lower portion of the pulling plate is used for making contact with the ball contact face of the spring end valve seat. The problems that when an existing top-mounted valve is installed, a ball cannot be correctly installed, parts are damaged, and disassembling is difficult are solved.

Description

Technical Field

[0001] The utility model relates to the field of valve processing, in particular to a tool for assembling a top-mounted valve ball. Background Art

[0002] During the processing and assembly of existing top-mounted valves, problems such as incorrect installation of the ball and damage to parts may easily occur.

[0003] The reason why the ball cannot be installed correctly is that during the assembly process of the small-diameter top-mounted valve ball, due to the compact structure of the valve internals, the operating space in the valve cavity is extremely narrow. If the upstream valve seat cannot be effectively and steadily pressed to the predetermined position and sufficient assembly clearance cannot be ensured, the ball will easily fail to be installed correctly.

[0004] The reason for the damage to the parts is that there are many springs on the back of the upstream valve seat and the pre-load force is large. When assembling the ball, improper operation can easily cause damage to the ball and valve seat in the cavity, and the ball may get stuck. If the parts are damaged, they must be reassembled after they are repaired and qualified. The ball and valve seat are precision parts, and the repair cycle after damage is long and expensive.

[0005] In addition, the existing top-mounted valves are also difficult to disassemble. If the valve fails after being installed and used on the pipeline, it is usually impossible to remove the valve as a whole from the pipeline and then disassemble it. This makes online maintenance impossible and is very inconvenient. In order to solve the above problems, a tool for assembling the ball of a top-mounted valve is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a tool for assembling the ball of a top-mounted valve, so as to solve the problems of incorrect installation of the ball, damage to parts and difficulty in disassembly during installation of the existing top-mounted valve.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A tool for assembling a top-mounted valve ball, comprising a valve body connecting base plate, screws and a pull plate, wherein the valve body connecting base plate can be connected to the top of the valve body through a valve stud, and a ball lowering through hole for the ball to pass through is opened in the middle of the valve body connecting base plate, and a screw through hole is opened horizontally on one side of the valve body connecting base plate, and the direction of the screw through hole is consistent with the direction of the liquid channel, the screw is installed at the screw through hole and threadedly connected to the screw through hole, and the inner end face of the screw is rotatably connected to the outer end face of the upper part of the pull plate, and the pull plate is placed on one side of the ball lowering through hole of the valve body connecting base plate, and the outer end face of the lower part of the pull plate is used to contact the ball contact surface of the spring end valve seat.

[0009] The valve assembly process is as follows:

[0010] ①. Install the spring on the back of the spring-end valve seat and then install the entire seat into the valve body; ②. The base plate for connecting the valve body is installed on the top of the valve body, and the studs and nuts provided with the valve are used to fix the base plate for connecting the valve body to the valve body; ③. The pull plate is slowly installed through the lower hole of the ball through the middle cavity of the valve body, and the upper part of the pull plate is placed on one side of the lower hole of the ball, and the arc step on the lower part of the pull plate fits the top surface of the spring-end valve seat; ④. Install the screws and tighten them slowly until the space size of the valve body inner cavity meets the assembly clearance; ⑤. Install the ball, flip it to the closed position, loosen the screws, remove the pull plate and the base plate for connecting the valve body to complete the assembly.

[0011] The valve disassembly process is as follows:

[0012] ①. The base plate for connecting the valve body is installed on the top of the valve body, and the studs and nuts provided with the valve are used to fix the base plate for connecting the valve body to the valve body; ②. The pull plate is slowly installed through the lower hole of the ball through the middle cavity of the valve body, and the upper part of the pull plate is placed on one side of the lower hole of the ball, and the arc step on the lower part of the pull plate fits the top surface of the spring-end valve seat; ③. Insert the screws and tighten them slowly until the space size of the valve body inner cavity meets the assembly clearance; ④. Turn the ball over to the flat position and take out the ball; loosen the screws, remove the pull plate and the base plate for connecting the valve body; ⑤. Take out the spring-end valve seat.

[0013] In this solution, the horizontal movement of the pull plate is achieved by rotating the screw, thereby achieving the tightening and relaxation of the spring-end valve seat, ensuring the reliable assembly of the spring-end valve seat, ensuring the effective gap of the assembly, achieving the free flipping of the ball, protecting the ball and the valve seat sealing surface from damage, and meeting the sealing requirements of the valve. During the assembly and maintenance of the valve, the operation quality is guaranteed, the maintenance difficulty and cost are reduced, and the reliability and service life of the valve are improved.

[0014] As a further preferred embodiment of the present invention, the bottom plate for connecting the valve body includes a valve body connecting block and a pull plate support plate. The valve body connecting block is annular, and a stud connecting through hole is vertically provided at a position of the valve body connecting block facing the valve stud. The pull plate support plate is horizontally arranged around the inner wall of the valve body connecting block at the bottom of the inner wall of the valve body connecting block.

[0015] The top surface of the pull plate support plate contacts the bottom surface of the upper portion of the pull plate to support the pull plate. The contact surface between the pull plate support plate and the pull plate is smooth, ensuring that the pull plate moves steadily and smoothly.

[0016] As a further preferred embodiment of the present invention, a convex stop adapted to the concave stop is provided at a position on the bottom surface of the bottom plate for connecting the valve body that is opposite to the concave stop on the top surface of the valve.

[0017] The base plate for connecting the valve body is limited by the stop and the assembled valve body, which can achieve more accurate positioning and make disassembly and assembly faster.

[0018] As a further preference of the present invention, the pull plate includes a placing portion, an inserting portion and a valve seat pulling portion arranged in sequence from top to bottom, and the placing portion, the inserting portion and the valve seat pulling portion are arranged in a stepped structure, and the longitudinal cross-sectional width of the stepped structure gradually narrows from top to bottom.

[0019] As a further preference of the present invention, the bottom surface of the placement portion contacts the top surface of the pull plate support plate of the bottom plate for connecting the valve body, the curvature of the outer end surface of the placement portion is adapted to the curvature of the inner wall of the spherical lowering through hole of the bottom plate for connecting the valve body, the bottom surface of the insertion portion contacts the top surface of the spring end valve seat, the bottom surface of the valve seat pulling portion is arc-shaped, and its curvature is adapted to the curvature of the position of the upper part of the valve spherical body facing the valve seat pulling portion, and the outer end surface of the valve seat pulling portion contacts the spherical contact surface of the spring end valve seat.

[0020] As a further preferred embodiment of the present invention, the screw is a hexagonal cylindrical head screw.

[0021] The engagement of the hexagon socket head screw and the thread ensures smooth transmission and strong force, which improves the reliability of product assembly.

[0022] As a further preference of the present invention, a screw head limit block is also slidably provided on the outer surface of the base plate for connecting the valve body, the thickness of the screw head limit block is the same as the maximum distance the screw head moves, the limit block can slide to a position between the screw head and the outer surface of the base plate for connecting the valve body, and the screw head limit block is provided with a slot adapted to the screw body at the position opposite to the screw body.

[0023] Since the spring-end valve seat has a spring, it will continuously apply pressure to the screw. Such pressure will be transmitted to the screw thread, affecting the service life of the screw. In order to solve this problem, a sliding screw head limit block is set on the outer surface of the base plate for connecting the valve body. When using the pull plate, after the pull plate is pulled into place, the screw head limit block is slid to the position between the screw head and the outer surface of the base plate for connecting the valve body. It can play a role in counteracting the spring rebound force, reducing the burden on the screw surface thread and increasing its service life.

[0024] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0025] 1. In this solution, the horizontal movement of the pull plate is achieved by rotating the screw, thereby achieving the tightening and loosening of the spring-end valve seat, ensuring the reliable assembly of the spring-end valve seat, ensuring the effective assembly clearance, achieving the free flipping of the ball, protecting the ball and the valve seat sealing surface from damage, and meeting the sealing requirements of the valve. During the assembly and maintenance of the valve, the operation quality is guaranteed, the maintenance difficulty and cost are reduced, and the reliability and service life of the valve are improved.

[0026] 2. The use of this top-mounted valve screw seat assembly tooling will significantly reduce the difficulty of screw seat assembly and effectively reduce the risk of damage to internal valve parts. It performs particularly well in the assembly of top-mounted valves with a diameter of ≤2 inches and has extremely high applicability.

[0027] 3. This tooling adopts a split assembly structure with ingenious design, easy assembly, high positioning accuracy and stable output force. It not only reduces its own weight, but also facilitates observation during operation. The split installation method further simplifies the installation process and greatly improves production efficiency.

[0028] 4. The top surface of the pull plate support plate contacts the bottom surface of the upper part of the pull plate to support the pull plate. The contact surface between the pull plate support plate and the pull plate is smooth to ensure that the pull plate moves steadily and smoothly.

[0029] 5. The base plate for connecting the valve body is limited by the stop and the assembled valve body, which can achieve more accurate positioning and make disassembly and assembly faster.

[0030] 6. The engagement of the hexagon socket head screw and the thread ensures smooth transmission and strong force, which improves the reliability of product assembly.

[0031] 7. Since the spring-end valve seat has a spring, it will continuously apply pressure to the screw. Such pressure will be transmitted to the screw thread, affecting the service life of the screw. In order to solve this problem, a sliding screw head limit block is set on the outer surface of the bottom plate for connecting the valve body. When using the pull plate, after the pull plate is pulled into place, the screw head limit block is slid to the position between the screw head and the outer surface of the bottom plate for connecting the valve body. It can play a role in counteracting the spring rebound force, reducing the burden on the screw surface thread and increasing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural diagram of the present utility model.

[0033] Figure 2 It is a schematic diagram of the structure of the utility model during assembly.

[0034] Figure 3 This is a physical diagram of the present utility model.

[0035] Figure 4 This is a structural diagram of the screw head limiting block of the utility model.

[0036] 1-bottom plate for valve body connection, 11-valve body connection block, 12-pull plate support plate, 13-convex stop, 2-screw, 3-pull plate, 31-placement part, 32-probe part, 33-valve seat pulling part, 4-valve stud, 5-screw head limit block. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0041] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances. Specific embodiment 1:

[0044] Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 A tool for assembling a top-mounted valve ball is shown, including a valve body connecting base plate 1, screws 2 and a pull plate 3. The valve body connecting base plate 1 can be connected to the top of the valve body through a valve stud 4. A ball lowering hole for the ball to pass through is opened in the middle of the valve body connecting base plate 1. A screw through hole is opened horizontally on one side of the valve body connecting base plate 1. The direction of the screw through hole is consistent with the direction of the liquid channel. The screw 2 is installed in the screw through hole and threadedly connected to the screw through hole. The inner end face of the screw 2 is rotatably connected to the outer end face of the upper part of the pull plate 3. The pull plate 3 is placed on one side of the ball lowering hole of the valve body connecting base plate 1. The outer end face of the lower part of the pull plate 3 is used to contact the ball contact surface of the spring end valve seat.

[0045] The valve assembly process is as follows:

[0046] ①. Install the spring on the back of the spring-end valve seat and then install the entire seat into the valve body; ②. The base plate for connecting the valve body is installed on the top of the valve body, and the studs and nuts provided with the valve are used to fix the base plate for connecting the valve body to the valve body; ③. The pull plate is slowly installed through the lower hole of the ball through the middle cavity of the valve body, and the upper part of the pull plate is placed on one side of the lower hole of the ball, and the arc step on the lower part of the pull plate fits the top surface of the spring-end valve seat; ④. Install the screws and tighten them slowly until the space size of the valve body inner cavity meets the assembly clearance; ⑤. Install the ball, flip it to the closed position, loosen the screws, remove the pull plate and the base plate for connecting the valve body to complete the assembly.

[0047] The valve disassembly process is as follows:

[0048] ①. The base plate for connecting the valve body is installed on the top of the valve body, and the studs and nuts provided with the valve are used to fix the base plate for connecting the valve body to the valve body; ②. The pull plate is slowly installed through the lower hole of the ball through the middle cavity of the valve body, and the upper part of the pull plate is placed on one side of the lower hole of the ball, and the arc step on the lower part of the pull plate fits the top surface of the spring-end valve seat; ③. Insert the screws and tighten them slowly until the space size of the valve body inner cavity meets the assembly clearance; ④. Turn the ball over to the flat position and take out the ball; loosen the screws, remove the pull plate and the base plate for connecting the valve body; ⑤. Take out the spring-end valve seat.

[0049] In this solution, the horizontal movement of the pull plate is achieved by rotating the screw, thereby achieving the tightening and relaxation of the spring-end valve seat, ensuring the reliable assembly of the spring-end valve seat, ensuring the effective gap of the assembly, achieving the free flipping of the ball, protecting the ball and the valve seat sealing surface from damage, and meeting the sealing requirements of the valve. During the assembly and maintenance of the valve, the operation quality is guaranteed, the maintenance difficulty and cost are reduced, and the reliability and service life of the valve are improved. Specific embodiment 2:

[0051] This embodiment further illustrates the base plate 1 for connecting the valve body on the basis of the specific embodiment 1. The base plate 1 for connecting the valve body includes a valve body connecting block 11 and a pull plate support plate 12. The valve body connecting block 11 is annular. A stud connecting through hole is vertically provided in the position of the valve body connecting block 11 facing the valve stud 4. The pull plate support plate 12 is horizontally arranged at the bottom of the inner wall of the valve body connecting block 11 around the inner wall of the valve body connecting block 11.

[0052] The top surface of the pull plate support plate contacts the bottom surface of the upper portion of the pull plate to support the pull plate. The contact surface between the pull plate support plate and the pull plate is smooth, ensuring that the pull plate moves steadily and smoothly. Specific embodiment 3:

[0054] This embodiment further explains the base plate 1 for connecting the valve body on the basis of the specific embodiment 2. The bottom surface of the base plate 1 for connecting the valve body is provided with a convex stop 13 adapted to the concave stop at the position where the bottom surface faces the concave stop on the top surface of the valve.

[0055] The base plate for connecting the valve body is limited by the stop and the assembled valve body, which can achieve more accurate positioning and make disassembly and assembly faster. Specific embodiment 4:

[0057] This embodiment further illustrates the pull plate 3 on the basis of the specific embodiment 1. The pull plate 3 includes a placement portion 31, an insertion portion 32 and a valve seat pulling portion 33 arranged in sequence from top to bottom. The placement portion 31, the insertion portion 32 and the valve seat pulling portion 33 are arranged in a stepped structure, and the longitudinal cross-sectional width of the stepped structure gradually narrows from top to bottom. Specific embodiment 5:

[0059] This embodiment further illustrates the placement portion 31 on the basis of specific embodiment 4. The bottom surface of the placement portion 31 contacts the top surface of the pull plate support plate 12 of the bottom plate 1 for connecting the valve body. The curvature of the outer end surface of the placement portion 31 matches the curvature of the inner wall of the spherical lowering hole of the bottom plate 1 for connecting the valve body. The bottom surface of the insertion portion 32 contacts the top surface of the spring-end valve seat. The bottom surface of the valve seat pulling portion 33 is arc-shaped, and its curvature matches the curvature of the position of the upper part of the valve spherical body facing the valve seat pulling portion 33. The outer end surface of the valve seat pulling portion 33 contacts the spherical contact surface of the spring-end valve seat. Specific embodiment 6:

[0061] This embodiment further illustrates the screw 2 based on the specific embodiment 1. The screw 2 is a hexagonal cylindrical head screw.

[0062] The engagement of the hexagon socket head screw and the thread ensures smooth transmission and strong force, which improves the reliability of product assembly. Specific embodiment 7:

[0064] This embodiment further explains the base plate 1 for connecting the valve body on the basis of the specific embodiment 1. A screw head limit block 5 is also slidably provided on the outer surface of the base plate 1 for connecting the valve body. The thickness of the screw head limit block 5 is the same as the maximum distance that the screw head moves. The screw head limit block 5 can slide to a position between the screw head and the outer surface of the base plate 1 for connecting the valve body. The screw head limit block 5 is provided with a groove adapted to the nail body of the screw 2 at the position of the nail body of the screw 2.

[0065] Since the spring-end valve seat has a spring, it will continuously apply pressure to the screw. Such pressure will be transmitted to the screw thread, affecting the service life of the screw. In order to solve this problem, a sliding screw head limit block is set on the outer surface of the base plate for connecting the valve body. When using the pull plate, after the pull plate is pulled into place, the screw head limit block is slid to the position between the screw head and the outer surface of the base plate for connecting the valve body. It can play a role in counteracting the spring rebound force, reducing the burden on the screw surface thread and increasing its service life.

[0066] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tool for assembling a top-mounted valve ball, characterized by: The invention comprises a valve body connection base plate (1), a screw (2) and a pull plate (3), wherein the valve body connection base plate (1) can be connected to the top of the valve body through a valve stud (4), a ball lowering through hole for the ball to pass through is provided in the middle of the valve body connection base plate (1), a screw through hole is provided horizontally on one side of the valve body connection base plate (1), the direction of the screw through hole is consistent with the direction of the liquid channel, the screw (2) is installed at the screw through hole and is threadedly connected to the screw through hole, the inner end face of the screw (2) is rotatably connected to the outer end face of the upper part of the pull plate (3), the pull plate (3) is placed on one side of the ball lowering through hole of the valve body connection base plate (1), and the outer end face of the lower part of the pull plate (3) is used to contact the ball contact surface of the spring end valve seat.

2. The top-mounted valve ball assembly tool according to claim 1, characterized in that: The bottom plate (1) for connecting the valve body comprises a valve body connecting block (11) and a pull plate support plate (12); the valve body connecting block (11) is annular; a stud connecting through hole is vertically provided at a position of the valve body connecting block (11) facing the valve stud (4); and the pull plate support plate (12) surrounds the inner wall of the valve body connecting block (11) and is horizontally arranged at the bottom of the inner wall of the valve body connecting block (11).

3. The top-mounted valve ball assembly tool according to claim 2, characterized in that: A convex stop (13) adapted to the concave stop is provided at a position on the bottom surface of the valve body connection bottom plate (1) facing the concave stop on the top surface of the valve.

4. The top-mounted valve ball assembly tool according to claim 1, characterized in that: The pull plate (3) comprises a placement portion (31), an insertion portion (32) and a valve seat pulling portion (33) which are arranged in sequence from top to bottom. The placement portion (31), the insertion portion (32) and the valve seat pulling portion (33) are arranged in a stepped structure, and the longitudinal cross-sectional width of the stepped structure gradually narrows from top to bottom.

5. The top-mounted valve ball assembly tool according to claim 4, characterized in that: The bottom surface of the placement portion (31) contacts the top surface of the pull plate support plate (12) of the bottom plate (1) for connecting the valve body, the curvature of the outer end surface of the placement portion (31) matches the curvature of the inner wall of the spherical lowering hole of the bottom plate (1) for connecting the valve body, the bottom surface of the insertion portion (32) contacts the top surface of the spring-end valve seat, the bottom surface of the valve seat pulling portion (33) is in an arc shape, and its curvature matches the curvature of the position where the upper part of the valve sphere faces the valve seat pulling portion (33), and the outer end surface of the valve seat pulling portion (33) contacts the spherical contact surface of the spring-end valve seat.

6. The top-mounted valve ball assembly tool according to claim 1, characterized in that: The screw (2) is a hexagonal cylindrical head screw.

7. The top-mounted valve ball assembly tool according to claim 1, characterized in that: The outer surface of the base plate (1) for connecting the valve body is also slidably provided with a screw head limit block (5), the thickness of the screw head limit block (5) is the same as the maximum distance the screw head moves, and the screw head limit block (5) can slide to a position between the screw head and the outer surface of the base plate (1) for connecting the valve body, and the screw head limit block (5) is provided with a slot adapted to the screw body of the screw (2) at a position facing the screw body.

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