Clamping and pressing type pipe valve

Abstract

The utility model relates to the technical field of pipeline connection and sealing, and discloses a clamping and pressing type pipe valve which comprises a valve body, a valve ball, a valve seat, a valve rod and a valve handle, the valve body comprises a left valve body and a right valve body, the left valve body and the right valve body are connected through a flange, an annular groove is formed in the valve rod, a sealing ring is arranged in the groove, and the valve ball and the valve seat are connected through a flange. After the valve is assembled, the metal pipe is pushed into an inner cavity of the valve body to a positioning position, the two ends of the valve body are extruded by the clamping and pressing device, the diameters of the two ends of the valve body and the middle section of the metal pipe are reduced due to pressure, and the metal pipe is inserted into the valve body. The diameter of the front end of the metal pipe is larger than that of the middle section, the metal pipe is provided with a horn-shaped opening and is not prone to disengagement in the high-pressure environment, no redundant gap exists between the metal pipe and the valve body, a large amount of space is saved, and the whole valve system is more stable and reliable during operation and lower in manufacturing and maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection and sealing, in particular to a compression type pipe valve. Background Art

[0002] The basic principle of "press-fit" connection technology is that a special rubber seal is installed in the socket at the end of the pipe fitting. During installation, the pipe is inserted into the socket fitting until the positioning step is reached. Then, a special press-fit tool is used to clamp the socket and squeeze it. During this process, the rubber seal is squeezed to provide a seal. At the same time, the pipe fitting and pipe material at the press-fit location shrink and deform, forming a hexagonal shape, effectively connecting and securing the pipe.

[0003] The compression type pipe connection is tight and has good seismic resistance, but generally the compression type pipe is limited by its connection method and its own materials and cannot be used in high temperature and high pressure environments. The compression type pipe is quite stable at the radial connection, but when the pressure in the pipe is too high, the fluid will generate great pressure in both the radial and axial directions, which will cause the compression type connected pipe to be likely to come out in the axial direction, thereby causing danger and unnecessary losses. The valve connected to the pipe by the compression type is used as a controller for the on-off of the pipeline. When opening and closing, the internal components of the valve will be continuously impacted by the fluid. Under long-term impact, the internal components may be damaged. The internal structure of most valves is relatively complex. When problems occur, the internal components are not easy to replace. The existing compression type connection to the valve is a patchwork of valves and connecting pipes. The valve and the connecting pipe are mostly connected by flanges. The overall structure is complex, the dead weight is large, the weight and cost are high, which is not conducive to installation in a small location, nor is it conducive to large-scale promotion. Utility Model Content

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the utility model provides a compression type pipe valve, which has the advantages of the pipe not being easy to fall out after connection, simple valve installation, small size and low cost, and solves the problem that the compression type pipe is easy to fall out under high pressure environment and the valve is inconvenient to maintain.

[0006] (2) Technical solution

[0007] In order to achieve the purpose of simple valve assembly, easy maintenance, and difficult pipeline dislodging, the utility model provides the following technical solutions: a compression type pipe valve, including a left valve body, a right valve body, a valve stem, a valve ball, a valve handle and a valve seat, the inner diameter of the valve body and the outer diameter of the metal pipe to be inserted match each other, the valve body is divided into a left valve body and a right valve body, the left valve body and the right valve body are connected by a flange, the valve stem has an annular groove, the groove has a sealing ring, the valve stem and the valve ball are plug-connected through a square hole, the outer side of the valve body has a convex groove, the convex groove has a sealing ring.

[0008] Preferably, the retaining ring step on the left side of the valve seat is fixedly installed inside the left valve body and is flush with the flange end face of the left valve body.

[0009] Preferably, there is a positioning position of a metal tube between the retaining ring step and the left valve body and the right valve body.

[0010] Preferably, the middle section of the metal tube is compressed after the clamping operation, and the metal tube is trumpet-shaped as a whole.

[0011] Preferably, the valve stem has a groove, and an annular sealing ring is provided in the groove.

[0012] (3) Beneficial effects

[0013] Compared with the prior art, the present invention provides a compression type pipe valve with the following beneficial effects:

[0014] 1. This compression type pipe valve uses the retaining ring step inside the connector in conjunction with the convex groove and reinforcing ribs on the outside. The metal pipe is inserted into the connector and into the groove of the retaining ring step to complete the positioning. A special compression tool is used to compress the outside of the connector. The outside of the connector and the metal pipe are deformed together. The position of the reinforcing rib cooperates with the compression tool to press out a concave groove on the metal pipe. During the compression process, the front end of the metal pipe is blocked by the retaining ring step and does not deform. Therefore, after the compression is completed, the diameter of the front end of the metal pipe is larger than the diameter of the compression part, and the whole presents a trumpet-shaped shape. This structure makes it difficult to fall out.

[0015] 2. The left and right valve bodies of this compression-type pipe valve are connected by flanges and bolts and nuts. The right end face of the left valve body is provided with a retaining ring step. When the valve is in working condition, the retaining ring steps on both sides fix the valve seat in the center of the valve to prevent it from shaking, completing the position limiting of the valve ball and valve seat. When maintenance or replacement of parts inside the valve body is required, the left and right valve bodies can be easily separated by simply removing the bolts and nuts. The retaining ring step on the left side is removed together with the left valve body, and the parts in the middle of the valve lose their position limiting support, so that the parts inside the valve body can be freely replaced. This design not only improves the maintenance convenience of the pipe valve, but also reduces maintenance costs, making the entire pipe valve system more efficient and flexible.

[0016] 3. This compression-type pipe valve has a simple and lightweight structure. The two sides of the valve body extend directly into connecting pipes, with no obvious dividing line in the middle. This design not only makes the overall appearance more streamlined, but also greatly simplifies the installation process. The metal pipe is cleverly positioned outside the retaining ring step. This layout not only ensures structural stability, but also leaves almost no excess gap between the metal pipe and the valve body, saving a lot of space and making the entire valve system more stable and reliable during operation. Whether it is installed in an environment with limited space or in fluid control applications requiring high efficiency and high reliability, it can exert excellent performance. At the same time, its simple and lightweight structure also effectively controls production costs, providing users with a more economical and affordable choice. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a longitudinal sectional view of the utility model;

[0019] Figure 3 It is a partial view of part of the structure of the utility model.

[0020] In the figure: 1-left valve body, 2-right valve body, 3-valve stem, 4-valve ball, 5-valve handle, 6-valve seat, 7-sealing ring, 8-retaining ring step, 9-convex groove, 10-positioning position, 11-metal pipe, 12-flange, 13-groove, 14-reinforcement rib. DETAILED DESCRIPTION

[0021] 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 embodiments described 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 are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "left", "right", "front", "back", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] See also Figure 1The flange 12 is fixedly mounted on the end faces of the left valve body 1 and the right valve body 2. The left valve body 1 and the right valve body 2 are connected by the flange 12 and bolts and nuts. The connection is firm and easy to disassemble and assemble. The two sides of the valve body extend outward to connect the pipes. The overall appearance is smoother and the installation process is greatly simplified. The metal pipe 11 is directly clamped and connected to the valve body, which reduces the number of installation steps and parts. It not only reduces time and money costs, but also reduces the risk of pipeline leakage and disengagement. The front end of the valve handle 5 has a limiting device and a limiting point on the right valve body 2. The limiting device and the limiting point cooperate with each other. The rotation angle of the valve handle 5 is limited to ninety degrees. When the valve handle 5 is in the axial position of the valve body, the valve is open. When the valve handle is in the radial position of the valve body, the valve is closed.

[0024] See also Figure 2 There are convex grooves 9 and grooves 13 on both sides of the valve body. An annular sealing ring 7 is provided in the convex groove 9. During the pressing operation, the sealing ring 7 is deformed by force and tightly attached to the middle of the valve body and the metal tube 11, effectively preventing the fluid from leaking from this position. A metal reinforcing rib 14 is provided in the groove 13. During the pressing operation, the reinforcing rib 14 is squeezed inward under the action of external pressure, causing a deeper indentation on the outer wall of the metal tube 11. The reinforcing rib 14 plays a role of fixing and preventing the metal tube 11 from falling out between the valve body.

[0025] See also Figure 3, there is a protruding retaining ring on the left end face of the right valve body 2. When the left valve body 1 and the right valve body 2 are assembled and closed, the cross-section of the inner cavity is not on the same plane as the middle gap of the flange 12. This design can effectively prevent fluid leakage from the joint. The retaining ring step 8 on the left side of the valve seat is fixedly installed inside the left valve body 1 and is flush with the flange end face. The valve seat 6 and the middle valve ball 4 are fixed by the two retaining ring steps 8 on the left and right. When the internal parts need to be replaced and maintained, it is only necessary to remove the left valve body 1, and the parts inside the valve body can be removed from the left end of the right valve body 2 in turn. Disassembly and assembly are very convenient, which reduces the time and labor cost during maintenance. The bottom of the valve stem 3 is a rectangular parallelepiped, which is inserted into the top of the valve ball 4. The valve stem 3 serves as the intermediate structure and can accurately and effectively control the rotation of the valve ball 4. The bottom of the valve stem 3 There is an annular retaining ring, which can be used as a positioning piece during assembly. There are two annular grooves 13 in the middle of the valve stem 3, and a sealing ring 7 is built into the groove 13. When in use, the retaining ring and the sealing ring 7 work together to prevent the fluid from leaking from the valve stem 3. There are positioning positions 10 of the metal tube 11 on both sides of the retaining ring step 8. The front end of the metal tube is inserted into the positioning position 10. When the clamping device is working, the middle part of the metal tube 11 is deformed by force and the inner diameter is reduced. The two ends of the valve body and the metal tube 11 are tightly attached together. The front end of the metal tube is in the positioning position 10 and is blocked by the retaining ring step 8 without deformation. The inner diameter of the front end of the metal tube and the side of the valve body close to the valve ball 4 is larger than the middle section of the metal tube. The metal tube 11 is trumpet-shaped as a whole. Therefore, when the fluid pressure in the metal tube 11 increases, the front end of the metal tube is blocked by the middle section and will not fall out easily.

[0026] Working principle: When installing the valve, first place the sealing ring 7 into the groove 13 of the valve stem 3, push the valve stem 3 upward from the right valve body 2, and the retaining ring rests on the upper part of the right valve body 2. Push the valve seat 6 on the right into the retaining ring step 8 of the right valve body 2, and install the valve ball 4 into the right valve body 2. The groove on the top of the valve ball 4 corresponds to the square block at the bottom of the valve stem 3 and is inserted to complete the assembly of the valve ball 4. Install the valve seat 6 on the left side of the valve ball 4, and align the left valve body 1 with the right valve body 2. Connect the two with the flange 12 and bolts and nuts. Put the valve handle 5 on the top of the valve stem 3. The assembly of the valve is completed. Place the reinforcement ribs 14 in the grooves 13 on both sides of the valve body, place the sealing ring 7 in the convex grooves 9 at both ends of the valve body, insert the metal pipe 11 into the valve body cavity from both sides of the valve body, and push it to the positioning position. Use electric hydraulic tools to press and install it. When there is no gap between the pressing pipe and the jaws, the pressing process is completed.

[0027] To sum up, 1. This compression type pipe valve uses the retaining ring step 8 inside the valve body in conjunction with the convex groove 9 and the reinforcing rib 14 on the outside. The metal tube 11 is inserted into the valve body and inserted into the groove 13 of the retaining ring step 8 to complete the positioning. A special compression tool is used to tighten the outside of the valve body. The outside of the valve body is deformed together with the metal tube 11. The position of the reinforcing rib 14 cooperates with the compression tool to press out a concave groove on the metal tube 11. During the compression process, the front end of the metal tube is blocked by the retaining ring step 8 and does not deform. Therefore, after the compression is completed, the diameter of the front end of the metal tube is larger than the diameter of the compression part, and the whole presents a trumpet-shaped shape. This structure makes it difficult to fall out.

[0028] 2. The left and right valve bodies of the compression-type pipe valve are connected by a flange 12 and bolts and nuts. The right end face of the left valve body 1 is provided with a retaining ring step 8. When the valve is in working condition, the retaining ring steps 8 on the left and right sides fix the valve seat 6 in the center of the valve to prevent it from shaking, thereby completing the position limiting of the valve ball 4 and the valve seat 6. When maintenance or replacement of parts inside the valve body is required, the left and right valve bodies can be easily separated by simply removing the bolts and nuts. The retaining ring step 8 on the left side is removed together with the left valve body 1. The parts in the middle of the valve lose their position limiting support, so that the parts inside the valve body can be freely replaced. This design not only improves the maintenance convenience of the pipe valve, but also reduces maintenance costs, making the entire pipe valve system more efficient and flexible.

[0029] The compression-type pipe valve has a simple and lightweight structure. The two sides of the valve body extend outward to serve as connecting pipes, and there is no obvious dividing line in the middle. This design not only makes the overall appearance more streamlined, but also greatly simplifies the installation process. The positioning position 10 of the metal pipe 11 is cleverly set on the outside of the retaining ring step 8. This layout not only ensures the stability of the structure, but also makes there is almost no extra gap between the metal pipe 11 and the valve body, saving a lot of space and making the entire valve system more stable and reliable during operation. Whether it is installed in an environment with limited space or in fluid control situations requiring high efficiency and high reliability, it can exert excellent performance. At the same time, its simple and lightweight structure also effectively controls production costs, providing users with a more economical and affordable choice.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compression type pipe valve, comprising a valve body, a valve stem (3), a valve ball (4), a valve handle (5) and a valve seat (6), characterized in that: The inner diameter of the valve body and the outer diameter of the metal pipe (11) to be inserted are matched with each other. The valve body is divided into a left valve body (1) and a right valve body (2). The left valve body (1) and the right valve body (2) are connected by a flange (12). A convex groove (9) is provided on the outer side of the valve body, a sealing ring (7) is provided in the convex groove (9), a groove (13) is provided on the inner side of the convex groove (9), and a reinforcing rib (14) is provided in the groove (13).

2. A compression type pipe valve according to claim 1, characterized in that: The retaining ring step (8) on the left side of the valve seat (6) is fixedly installed inside the left valve body (1) and is flush with the end face of the flange (12) of the left valve body (1).

3. The compression type pipe valve according to claim 2, characterized in that: There is a positioning position (10) of a metal tube (11) between the retaining ring step (8) and the left valve body (1) and the right valve body (2).

4. The compression type pipe valve according to claim 1, characterized in that: The middle section of the metal tube (11) is compressed after the clamping operation, and the metal tube (11) is trumpet-shaped as a whole.

5. The compression type pipe valve according to claim 1, characterized in that: The valve stem (3) is provided with a groove (13), and an annular sealing ring (7) is arranged in the groove (13).

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