Ball valve

Abstract

The ball valve comprises a valve body, a valve element and a handle, a channel with openings located in the left end and the right end of the valve body is arranged in the valve body, a first connector is arranged at the left end of the channel, a second connector is arranged at the right end of the channel, an installation head is arranged at the upper end of the valve body, and an installation groove is formed in the installation head. A mounting groove is formed in the valve body, a mounting hole communicated with the channel is formed in the position, at the mounting groove, of the valve body, the valve element comprises a connecting rod and a valve ball, a through hole matched with the channel is formed in the valve ball, the valve ball is arranged in the channel, the connecting rod penetrates through the mounting hole, and a sealing gasket matched with the connecting rod is mounted in the mounting groove; the handle is installed on the upper portion of the connecting rod, sealing rings are further arranged between the valve ball in the channel and the first connector and between the valve ball in the channel and the second connector, the ball valve overcomes the defects in the prior art, the problem of corrosion cannot occur when the ball valve is used, the sealing rings are made of polytetrafluoroethene rubber, and therefore the sealing performance and the durability of the ball valve are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and specifically belongs to a ball valve. Background Art

[0002] As a closing and opening device on a pipeline, the valve ball is driven by a valve stem to rotate and can be used for the regulation and control of fluids. However, due to the mature production line, the mainstream ball valves on the market at present are still metal ball valves. The valve body, handle, valve stem and valve core of this kind of ball valve are all made of metal materials, and it is easy to rust when used in corrosive fluids. If the opening and closing operations are not carried out for a long time, it is easy to cause rusting and inability to open and close, and the production cost of the existing ball valves is relatively high. Content of the Utility Model

[0003] The purpose of the utility model is to provide a ball valve, which overcomes the deficiencies of the prior art.

[0004] To solve the above problems, the technical solutions adopted by the utility model are as follows:

[0005] A ball valve includes a valve body, a valve core and a handle. A channel with openings at the left and right ends of the valve body is provided inside the valve body. A first connector is arranged at the left end of the channel, and a second connector is arranged at the right end of the channel. An installation head is arranged at the upper end of the valve body, and an installation groove is arranged inside the installation head. An installation hole communicating with the channel is arranged on the valve body at the installation groove. The valve core includes a connecting rod and a valve ball. A through hole matching the channel is arranged on the valve ball. The valve ball is arranged inside the channel. The connecting rod passes through the installation hole, and a sealing gasket matching the connecting rod is installed inside the installation groove; the handle is installed on the upper part of the connecting rod, and a sealing ring is further arranged between the valve ball inside the channel and the first connector and the second connector. The sealing ring is used to seal the contact surface between the valve ball and the sealing ring, and the space between the valve ball and the first connector and the second connector;

[0006] The sealing ring is made of polytetrafluoroethylene rubber; the valve body, the valve core and the handle are all made of plastic materials.

[0007] Further, a limiting body is arranged on the upper end surface of the installation head. A pressing ring matching the installation groove and the sealing gasket is arranged on the lower surface of the handle, and a clamping block matching the limiting body is arranged on the outer surface of the pressing ring.

[0008] Further, a connecting hole penetrating through the pressing ring is arranged on the handle. The upper end of the connecting rod is located inside the connecting hole. Two correspondingly arranged convex blocks are arranged on the inner wall of the connecting hole. An L-shaped clamping groove matching the convex blocks is arranged on the outer surface of the connecting rod. The L-shaped clamping groove includes a vertical groove and a horizontal groove, and the convex block can be clamped into the horizontal groove;

[0009] A clamping cap located at the top end of the connecting rod is further installed inside the connecting hole. A limiting strip matching the vertical groove is arranged on the lower surface of the clamping cap.

[0010] Furthermore, the first connector and the second connector are made of metal, and connection rings for connecting with the valve body are provided on the first connector and the second connector.

[0011] Furthermore, the first connector and the second connector are made of plastic, and the first connector and the second connector are of an integral structure with the valve body.

[0012] When the utility model is compared with the prior art, the implementation effects of the utility model are as follows:

[0013] 1. The valve body, valve core, handle and cap of the ball valve are all made of plastic, so there will be no rust problem during use, and the sealing ring is made of polytetrafluoroethylene rubber, greatly improving the sealing performance and durability of the ball valve;

[0014] 2. The connecting rod of the valve core is conveniently installed with the handle and the cap. Installation does not require tools, facilitating large-scale production;

[0015] 3. The first connector, the second connector and the valve body of the ball valve can be integrally injection-molded, reducing production processes and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view of the utility model;

[0017] Figure 2 is the top view of the valve body of the utility model;

[0018] Figure 3 is the cross-sectional view of the utility model;

[0019] Figure 4 is the top view of the handle of the utility model;

[0020] Figure 5 is the bottom view of the handle of the utility model;

[0021] Figure 6 is the front view of the valve core of the utility model;

[0022] Figure 7 is the structural schematic diagram of the cap of the utility model;

[0023] Figure 8 is the cross-sectional view when the first connector, the second connector and the valve body are of an integral structure.

[0024] Description of the reference numerals: 1, valve body; 2, first connector; 21, connecting ring; 3, second connector; 4, mounting head; 41, limiting body; 5, valve core; 51, through hole; 52, connecting rod; 53, vertical groove; 54, horizontal groove; 6, handle; 61, pressing ring; 62, clamping block; 63, convex block; 7, retaining cap; 71, limiting strip; 8, gasket; 9, sealing ring. Detailed implementation manners

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0027] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] As Figure 1-3 shown, the ball valve of the present invention includes a valve body 1, a valve core 5 and a handle 6. The valve body 1, the valve core 5 and the handle 6 are all made of plastic. A channel with openings at the left and right ends of the valve body 1 is provided inside the valve body 1. A first connector is provided at the left end of the channel, and a second connector is provided at the right end of the channel. When the ball valve is in use, gas or liquid can flow through the channel. The first connector 2 and the second connector 3 facilitate the connection of the ball valve to a pipeline joint.

[0029] As Figure 2-7As shown in the figure, the upper end of the valve body 1 is provided with a mounting head 4, and the mounting head 4 and the valve body 1 are of an integrated structure; an installation groove is provided in the mounting head 4, and a mounting hole communicating with the channel is provided on the valve body 1 at the installation groove. The valve core 5 includes a connecting rod 52 and a valve ball integrally formed. A through hole 51 matching the channel is provided on the valve ball. The valve ball is arranged in the channel. The connecting rod 52 passes through the mounting hole, and a sealing gasket 8 matching the connecting rod 52 is installed in the installation groove; the handle 6 is installed on the upper part of the connecting rod 52. A sealing ring 9 is also provided between the valve ball in the channel and the first connecting head and the second connecting head. The sealing ring 9 is made of polytetrafluoroethylene rubber. The sealing ring 9 is used to seal the contact surface between the valve ball and the sealing ring 9, and the space between the valve ball and the first connecting head and the second connecting head; by rotating the handle 6, the connecting rod 52 and the valve ball are driven to rotate, and the angle of the through hole 51 in the channel is adjusted to realize the closing and opening of the channel.

[0030] A limiting body 41 is also provided on the upper end surface of the mounting head 4. A pressing ring 61 matching the installation groove and the sealing gasket 8 is provided on the lower surface of the handle 6. The pressing ring 61 can press the sealing gasket 8 to achieve sealing at the mounting hole and prevent water leakage at the connecting rod; a clamping block 62 matching the limiting body 41 is provided on the outer surface of the pressing ring 61. When the handle 6 rotates, the clamping block 62 and the limiting body 41 can control the fully open and fully closed positions of the valve ball, which is convenient for controlling the rotation position of the handle 6 during actual use.

[0031] A connecting hole penetrating the pressing ring 61 is provided on the handle 6. The upper end of the connecting rod 52 is located in the connecting hole. Two correspondingly arranged convex blocks 63 are provided on the inner wall of the connecting hole. An L-shaped clamping groove matching the convex blocks 63 is provided on the outer surface of the connecting rod 52. The L-shaped clamping groove includes a vertical groove 53 and a horizontal groove 54, and the convex block 63 can be clamped into the horizontal groove 54; a clamping cap 7 located at the top of the connecting rod 52 is also installed in the connecting hole. A limiting strip 71 matching the vertical groove 53 is provided on the lower surface of the clamping cap 7. The limiting strip 71 can prevent the installed convex block 63 from slipping out of the L-shaped clamping groove. The installation of the connecting rod 52 with the handle 6 and the clamping cap 7 is convenient, and tools are not required for installation, which is convenient for large-scale production.

[0032] The first connecting head and the second connecting head of the ball valve are made of metal, and connecting rings 21 for connecting with the valve body 1 are provided on the first connecting head and the second connecting head, as Figure 3 shown, which is convenient for the injection molding of the valve body 1 and the sealing at the connection; in addition, the first connecting head and the second connecting head can also be made of plastic, and the first connecting head, the second connecting head and the valve body 1 are of an integrated structure, as Figure 8 shown. At this time, the first connecting head, the second connecting head and the valve body 1 can be integrally injection molded, reducing the production process and saving production costs.

[0033] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A ball valve, comprising a valve body, a valve core and a handle, wherein the valve body is provided with channels with openings located at the left and right ends of the valve body, the left end of the channel is provided with a first connector, and the right end of the channel is provided with a second connector, characterized in that: The upper end of the valve body is provided with a mounting head, a mounting groove is provided in the mounting head, a mounting hole connected to the channel is provided on the valve body at the mounting groove, the valve core includes a connecting rod and a valve ball, the valve ball is provided with a through hole matched with the channel, the valve ball is arranged in the channel, the connecting rod passes through the mounting hole, and a sealing gasket matched with the connecting rod is installed in the mounting groove; the handle is installed on the upper part of the connecting rod, and a sealing ring is also provided between the valve ball in the channel and the first connecting head and the second connecting head; The sealing ring is made of polytetrafluororubber; the valve body, valve core and handle are all made of plastic.

2. A ball valve according to claim 1, characterized in that: The upper end surface of the mounting head is also provided with a limiting body, the lower surface of the handle is provided with a pressing ring matched with the mounting groove and the sealing gasket, and the outer surface of the pressing ring is provided with a clamping block matched with the limiting body.

3. A ball valve according to claim 1, characterized in that: The handle is provided with a connecting hole that passes through the pressure ring, the upper end of the connecting rod is located in the connecting hole, the inner wall of the connecting hole is provided with two correspondingly arranged protrusions, the outer surface of the connecting rod is provided with an L-shaped slot that matches the protrusion, the L-shaped slot includes a vertical slot and a horizontal slot, and the protrusion can be inserted into the horizontal slot; A clamping cap located at the top end of the connecting rod is also installed in the connecting hole, and a limiting strip cooperating with the vertical groove is provided on the lower surface of the clamping cap.

4. A ball valve according to claim 1, characterized in that: The first connecting head and the second connecting head are made of metal, and connecting rings connected to the valve body are provided on the first connecting head and the second connecting head.

5. A ball valve according to claim 1, characterized in that: The first connector and the second connector are made of plastic material, and the first connector and the second connector are integrated with the valve body.

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