CN215522042U - Ball valve with better non-return sealing performance - Google Patents
Ball valve with better non-return sealing performance Download PDFInfo
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- CN215522042U CN215522042U CN202121363308.4U CN202121363308U CN215522042U CN 215522042 U CN215522042 U CN 215522042U CN 202121363308 U CN202121363308 U CN 202121363308U CN 215522042 U CN215522042 U CN 215522042U
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Abstract
The utility model discloses a ball valve with better non-return sealing performance, which comprises a valve body, a valve core rod, a valve core ball and a handle, wherein the inlet end of the valve body is connected with a water inlet joint; the outlet end of the valve body is connected with a non-return device, a positioning sealing boss is arranged in the valve body, and the non-return device comprises a non-return valve rod, a spring, a positioning joint and a non-return sealing gasket; the positioning connector is internally provided with an installation column, a plurality of connecting plates are arranged between the installation column and the positioning connector, a plurality of through holes are formed, and the installation column is also provided with a positioning sliding hole; a sealing plate is arranged on the check valve rod; the check sealing gasket is provided with an annular sealing cavity, two sides of the check sealing gasket can respectively form sealing support with the sealing plate and the positioning sealing boss in a sealing mode under the closing state of the ball valve, a water passage is arranged on the check valve rod, one end of the water passage is communicated with the end part, located at the positioning joint, of the check valve rod, and the other end of the water passage is communicated with the annular sealing cavity. The non-return device has the advantages of simple structure, convenient installation and connection and reliable sealing performance of the non-return function.
Description
Technical Field
The utility model belongs to the technical field of ball valves, and particularly relates to a ball valve with better non-return sealing performance.
Background
The ball valve is widely applied to pipeline transportation in various industries and is a control component in a fluid conveying system, and the on-off condition of the ball valve is controlled by the rotation of a valve core ball in a valve body.
In order to improve the safety of the closed ball valve, a check valve is arranged on a pipeline at the rear part of the ball valve, but the technical means of independently arranging the check valve is troublesome, and the check function effect is not good when the ball valve is closed for use; there is therefore a need for improvement with respect to the above-mentioned drawbacks.
Disclosure of Invention
The utility model aims to solve the problems in the background technology, and provides a ball valve with better non-return sealing performance, which is simple in installation structure and has better non-return sealing performance.
In order to achieve the purpose, the technical scheme of the utility model is as follows: a ball valve with better non-return sealing performance comprises a valve body, a valve core rod, a valve core ball and a handle, wherein the inlet end of the valve body is connected with a water inlet joint; the outlet end of the valve body is connected with a non-return device, a positioning sealing boss which can form sealing abutting with the non-return device is arranged in the valve body, and the non-return device comprises a non-return valve rod, a spring, a positioning joint and a non-return sealing gasket; the positioning connector is connected with the valve body, an installation column is arranged in the positioning connector, a plurality of connecting plates are arranged between the installation column and the positioning connector, a plurality of through holes are formed, and a positioning sliding hole used for connecting a check valve rod is further arranged on the installation column; the check valve rod is provided with a sealing plate, the spring is sleeved on the check valve rod, one end of the spring abuts against the sealing plate, and the other end of the spring abuts against the connecting plate; the ball valve is characterized in that the check sealing gasket is arranged at the end part of the check valve rod and provided with an annular sealing cavity, two sides of the check sealing gasket can respectively form sealing support with the sealing plate and the positioning sealing boss in a sealing mode under the closing state of the ball valve, a water passage is arranged on the check valve rod, one end of the water passage is communicated with the end part, located at the positioning joint, of the check valve rod, and the other end of the water passage is communicated with the annular sealing cavity.
When the ball valve is closed, the check valve rod moves under the acting force of the spring, so that the check sealing gasket on the side face of the sealing plate and the positioning sealing boss form sealing support, the return water in the pipeline enters the annular sealing cavity of the check sealing gasket through the water passage, and the pressure formed by the water in the annular sealing cavity acts on the check sealing gasket, so that the force of the side sealing support of the check sealing gasket is improved, and the sealing performance of the check function is further ensured.
In foretell better ball valve of non return leakproofness, be equipped with the seal installation groove on the non return valve rod, the sealed inboard portion location of filling up of non return is in the seal installation groove, the water passage includes main through-hole and a plurality of and the communicating branch through-hole of main through-hole, divides the through-hole to correspond with annular seal chamber and communicates with each other.
In the above-mentioned ball valve that the non return leakproofness is better, be equipped with supplementary sealed boss on the non return sealed pad, be equipped with supplementary annular seal chamber on the supplementary sealed boss, be equipped with supplementary sealed mounting groove on the non return valve rod, supplementary sealed boss inside side location is in supplementary sealed mounting groove, the check valve rod tip is equipped with a plurality of and the communicating supplementary through-hole of main through-hole, and supplementary through-hole corresponds with supplementary annular seal chamber and communicates with each other.
In foretell better ball valve of non return leakproofness, be equipped with the sealed recess of location on the sealed boss of location, under the ball valve closed condition, the sealed pad of non return can seal to lean on to be in the sealed recess of location.
In the ball valve with better non-return sealing performance, a through-flow flaring is arranged at the end part, which is communicated with the non-return valve rod and is positioned at the positioning joint, of one end of the water passage.
By adopting the technical scheme, the utility model has the following beneficial effects:
the check device is arranged at the water outlet of the ball valve, has a simple structure, is directly connected to the water outlet of the valve body and then is integrally connected with the pipeline, and is very convenient to install and connect.
The non-return sealing gasket in the non-return device is in sealing abutting contact with the positioning sealing boss in the closing state of the ball valve, and the backwater in the pipeline can be introduced into the non-return sealing gasket to form a relative acting force with the elastic force of the spring, so that the sealing abutting force between the side surface of the non-return sealing gasket and the positioning sealing boss and the sealing plate can be well improved, and the sealing performance of the non-return function is further ensured.
Drawings
FIG. 1 is a cross-sectional structural view of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1.
Detailed Description
The utility model is further explained with reference to the drawings.
Referring to fig. 1 and 2, the present invention provides a ball valve with better check and sealing performance, which includes a valve body 1, a valve core rod 2, a valve core ball 3, and a handle 4, wherein an inlet end of the valve body 1 is connected to a water inlet joint 5; the outlet end of the valve body 1 is connected with a non-return device, a positioning sealing boss 6 which can form sealing support with the non-return device is arranged in the valve body 1, and the non-return device comprises a non-return valve rod 7, a spring 8, a positioning joint 9 and a non-return sealing gasket 10; the positioning connector 9 is connected with the valve body 1, an installation column 11 is arranged in the positioning connector 9, a plurality of connecting plates 12 are arranged between the installation column 11 and the positioning connector 9 to form a plurality of through holes 13, and a positioning slide hole 14 used for connecting the check valve rod 7 is also arranged on the installation column 11; a sealing plate 15 is arranged on the check valve rod 7, the spring 8 is sleeved on the check valve rod 7, one end of the spring 8 abuts against the sealing plate 15, and the other end of the spring 8 abuts against the connecting plate 12; the check sealing gasket 10 is installed at the end part of the check valve rod 7 and is provided with an annular sealing cavity 16, two sides of the check sealing gasket 10 can respectively form sealing abutting with the sealing plate 15 and the positioning sealing boss 6 in a closing state of the ball valve, a water passage 17 is arranged on the check valve rod 7, one end of the water passage 17 is communicated with the end part of the check valve rod 7, located at the positioning joint 9, and the other end of the water passage 17 is communicated with the annular sealing cavity 16.
The check device is installed and connected at the water outlet of the valve body 1 through a positioning joint 9 of the check device, and then is connected to a pipeline as an integral structure together with the ball valve for use; when the ball valve is opened for use, the water pressure pushes the check sealing gasket 10 and the sealing plate 15 to enable the check valve rod 7 to compress the spring 8 to move, so that water at the water outlet of the valve body 1 flows out through the through hole 13 in the positioning joint 9; when the ball valve is closed, the ball valve is closed along with the rotation of the valve core ball 3, the water passing pressure is slowly reduced, and the water passing pressure existing in the closing process is slowly overcome by the elastic force of the spring 8, so that the check valve rod 7 quickly moves under the acting force of the spring 8, the check sealing gasket 10 on the side surface of the sealing plate 15 and the positioning sealing boss 6 form sealing support, and the backflow phenomenon of water passing in a pipeline connected with the water outlet of the valve body 1 is prevented; and if the ball valve is closed, if backwater exists in the pipeline and the backwater enters the annular sealing cavity 16 of the non-return sealing gasket 10 through the water passage 17, the pressure formed by the water in the annular sealing cavity 16 acts on the non-return sealing gasket 10, so that the force of sealing and abutting between the side surface of the non-return sealing gasket 10 and the positioning sealing boss 6 and the sealing plate 15 is improved, and the sealing performance of the non-return function is further ensured.
Furthermore, a sealing installation groove 18 is formed in the check valve rod 7, and the inner side part of the check sealing gasket 10 is positioned in the sealing installation groove 18, so that the positioning connection stability and the sealing property of the check sealing gasket 10 can be improved; the water passage 17 comprises a main through hole 19 and a plurality of branch through holes 20 communicated with the main through hole 19, and the branch through holes 20 are correspondingly communicated with the annular sealing cavity 16, so that water in the water passage 17 can better enter the non-return sealing gasket 10, and the force of sealing and abutting between the side surface of the non-return sealing gasket 10 and the positioning sealing boss 6 and the sealing plate 15 is rapidly improved.
Furthermore, an auxiliary sealing boss 21 is arranged on the non-return sealing gasket 10, the non-return sealing gasket and the auxiliary sealing boss are of an integrated structure, an auxiliary annular sealing cavity 22 is arranged on the auxiliary sealing boss 21, an auxiliary sealing installation groove 23 is arranged on the non-return valve rod 7, the inner side part of the auxiliary sealing boss 21 is positioned in the auxiliary sealing installation groove 23, a plurality of auxiliary through holes 24 communicated with the main through hole 19 are arranged at the end part of the non-return valve rod 7, and the auxiliary through holes 24 are correspondingly communicated with the auxiliary annular sealing cavity 22; the auxiliary sealing boss 21 is arranged to form sealing abutment in the positioning sealing boss 6 in the closing state of the ball valve, so that the sealing performance of the non-return function is further ensured.
Furthermore, a positioning sealing groove 25 is formed in the positioning sealing boss 6, and the non-return sealing gasket 10 can be in sealing abutting contact with the positioning sealing groove 25 in the closing state of the ball valve; the outer circumferential side of the non-return gasket 10 can thus form a sealing abutment with the positioning sealing groove 25, so that the tightness in the non-return state is improved.
Furthermore, in order to enable the return water in the pipeline connected with the positioning joint 9 to quickly enter the non-return sealing gasket 10, one end of the water passage 17 communicated with the non-return valve rod 7 is provided with a through flaring 26 at the end part of the positioning joint 9.
The ball valve with better check and sealing performance provided by the embodiment of the utility model is described in detail, and the principle and the implementation mode of the utility model are explained by applying specific examples, and the description of the embodiment is only used for helping to understand the technical scheme disclosed by the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (5)
1. A ball valve with better non-return sealing performance comprises a valve body, a valve core rod, a valve core ball and a handle, wherein the inlet end of the valve body is connected with a water inlet joint; the method is characterized in that: the outlet end of the valve body is connected with a non-return device, a positioning sealing boss which can form sealing abutting with the non-return device is arranged in the valve body, and the non-return device comprises a non-return valve rod, a spring, a positioning joint and a non-return sealing gasket; the positioning connector is connected with the valve body, an installation column is arranged in the positioning connector, a plurality of connecting plates are arranged between the installation column and the positioning connector, a plurality of through holes are formed, and a positioning sliding hole used for connecting a check valve rod is further arranged on the installation column; the check valve rod is provided with a sealing plate, the spring is sleeved on the check valve rod, one end of the spring abuts against the sealing plate, and the other end of the spring abuts against the connecting plate; the ball valve is characterized in that the check sealing gasket is arranged at the end part of the check valve rod and provided with an annular sealing cavity, two sides of the check sealing gasket can respectively form sealing support with the sealing plate and the positioning sealing boss in a sealing mode under the closing state of the ball valve, a water passage is arranged on the check valve rod, one end of the water passage is communicated with the end part, located at the positioning joint, of the check valve rod, and the other end of the water passage is communicated with the annular sealing cavity.
2. A ball valve with better sealing performance for check according to claim 1, characterized in that: the check valve comprises a check valve rod, a check sealing gasket and a water passage, wherein a sealing installation groove is formed in the check valve rod, the inner side portion of the check sealing gasket is positioned in the sealing installation groove, the water passage comprises a main through hole and a plurality of branch through holes communicated with the main through hole, and the branch through holes are correspondingly communicated with an annular sealing cavity.
3. A ball valve with better sealing performance for check according to claim 2, characterized in that: the check sealing gasket is provided with an auxiliary sealing boss, the auxiliary sealing boss is provided with an auxiliary annular sealing cavity, the check valve rod is provided with an auxiliary sealing installation groove, the inner side part of the auxiliary sealing boss is positioned in the auxiliary sealing installation groove, the end part of the check valve rod is provided with a plurality of auxiliary through holes communicated with the main through hole, and the auxiliary through holes are communicated with the auxiliary annular sealing cavity correspondingly.
4. A ball valve with better sealing performance for check according to claim 1, characterized in that: and a positioning sealing groove is formed in the positioning sealing boss, and the non-return sealing gasket can be sealed and abutted against the positioning sealing groove in the closing state of the ball valve.
5. A ball valve with better sealing performance for check according to claim 2, characterized in that: and one end of the water passage is communicated to the end part of the check valve rod, which is positioned at the positioning joint, and is provided with a through-flow flaring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121363308.4U CN215522042U (en) | 2021-06-19 | 2021-06-19 | Ball valve with better non-return sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121363308.4U CN215522042U (en) | 2021-06-19 | 2021-06-19 | Ball valve with better non-return sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215522042U true CN215522042U (en) | 2022-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121363308.4U Active CN215522042U (en) | 2021-06-19 | 2021-06-19 | Ball valve with better non-return sealing performance |
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| Country | Link |
|---|---|
| CN (1) | CN215522042U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115451150A (en) * | 2022-09-28 | 2022-12-09 | 常州市海盈五金科技有限公司 | Single-chip valve |
-
2021
- 2021-06-19 CN CN202121363308.4U patent/CN215522042U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115451150A (en) * | 2022-09-28 | 2022-12-09 | 常州市海盈五金科技有限公司 | Single-chip valve |
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