CN212745088U - Single-seat soft-hard combined sealing leakage-free regulating valve - Google Patents
Single-seat soft-hard combined sealing leakage-free regulating valve Download PDFInfo
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- CN212745088U CN212745088U CN202021544188.3U CN202021544188U CN212745088U CN 212745088 U CN212745088 U CN 212745088U CN 202021544188 U CN202021544188 U CN 202021544188U CN 212745088 U CN212745088 U CN 212745088U
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Abstract
The utility model relates to a single-seat soft and hard combined sealing leakage-free regulating valve, which comprises a valve body, a valve cover, a valve rod, a valve core and a valve seat, wherein the valve cover is fixedly connected on the valve body, and a valve cavity is formed between the valve body and the valve cover; the valve seat is horizontally arranged on the valve body, a through hole penetrating through the valve seat is formed in the valve seat, the upper section of the through hole is a sealing surface of the valve seat, a sealing gasket is arranged on the upper end surface of the valve seat, a pressing plate is fixedly connected to the valve seat and presses the sealing gasket to tightly fix the sealing gasket, the valve core is arranged on the valve seat and is divided into a plurality of sections from top to bottom, one section is a horizontal plane, the other section is a sealing surface, and the horizontal plane is located above the sealing surface and is in transition connection with the; the valve seat is in sealing contact with the valve core, the horizontal plane of the valve core is in sealing contact with the sealing gasket to form a first line seal, and the sealing surface of the valve core is in sealing contact with the sealing surface of the valve seat to form a second line seal.
Description
Technical Field
The utility model relates to a governing valve, concretely relates to sealed nothing of single seat soft and hard combination leaks governing valve.
Background
With the rapid development of the technology of the regulating valve industry, the national and enterprise have higher and higher technical requirements on the industry, and meanwhile, the design and processing requirements on products for manufacturers producing regulating valves are stricter. The design detail requirement is more rationalized, and the product quality can be effectively improved.
How to solve the leakage problem of the regulating valve is always the research direction in the field; particularly, for the regulating valve with low inlet and high outlet, the medium flows to flush the sealing surfaces of the valve seat and the valve core, so that leakage is more easily caused.
Disclosure of Invention
The utility model provides a sealed no-leakage regulating valve of single seat soft or hard combination.
The technical scheme of the utility model:
a single-seat soft-hard combined sealing leakage-free regulating valve comprises a valve body, a valve cover, a valve rod, a valve core and a valve seat, wherein the valve cover is fixedly connected to the valve body, a valve cavity is formed between the valve body and the valve cover, the valve core and the valve seat are arranged in the valve cavity in a matched mode, the valve cavity is divided into an upper part and a lower part, two ends of the valve body are respectively provided with an inlet/outlet, one inlet/outlet is communicated with the lower part of the valve cavity, the other inlet/outlet is communicated with the upper part of the valve cavity, the valve rod vertically penetrates through the valve cover and is connected with the valve core, and; the valve seat is horizontally arranged on the valve body, a through hole penetrating through the valve seat is formed in the valve seat, the upper section of the through hole is a sealing surface of the valve seat, a sealing gasket is arranged on the upper end surface of the valve seat, a pressing plate is fixedly connected to the valve seat and presses the sealing gasket to tightly fix the sealing gasket, the valve core is arranged on the valve seat and is divided into a plurality of sections from top to bottom, one section is a horizontal plane, the other section is a sealing surface, and the horizontal plane is located above the sealing surface and is in transition connection with the; the valve seat is in sealing contact with the valve core, the horizontal plane of the valve core is in sealing contact with the sealing gasket to form a first line seal, and the sealing surface of the valve core is in sealing contact with the sealing surface of the valve seat to form a second line seal; preferably, the sealing gasket is a polytetrafluoroethylene sealing gasket.
The valve comprises a valve core, a valve cover, a pressing sleeve and a pressing plate, wherein the valve core is arranged in the valve cavity, the pressing sleeve is sleeved on the outer side of the valve core, a gap is reserved between the pressing sleeve and the valve core, the upper end of the pressing sleeve is abutted against the valve cover, the lower end of the pressing sleeve is abutted against the pressing plate, and an opening is.
The lower end of the valve cover extends into one section of the valve cavity, an upper valve cavity is arranged in the valve cover and is positioned right above the valve cavity, a channel is vertically arranged in the valve cover and is communicated with the upper valve cavity and the valve cavity, the upper end of the valve core extends into the channel and is in sliding fit with the valve cover, and the lower end of the valve rod penetrates through the upper valve cavity and extends into the channel to be connected with the valve core; a plurality of inclined holes are uniformly formed in one periphery of the bottom of the upper valve cavity and are communicated with the valve cavity through the inclined holes.
The valve seats are vertically symmetrical; secondary utilization can be realized.
An o-shaped sealing ring is further arranged between the sealing gasket and the valve seat.
One section of the valve core is a flow guide surface, the flow guide surface is positioned below the sealing surface, and the sealing surface of the valve core is excessively connected with the flow guide surface.
The inlet/outlet communicated with the upper part of the valve cavity is an outlet, and the inlet/outlet communicated with the lower part of the valve cavity is an inlet and is arranged in a low-inlet and high-outlet mode; therefore, even if the metal seal is washed and leaked, the soft seal formed by the sealing gasket is still used for ensuring that the valve is not leaked.
The utility model has the advantages of, reasonable in design, simple structure constitutes twice line seal, under the prerequisite of guaranteeing the machining precision, need not to grind, can reach no leakage, has improved the qualification rate of disposable assembly, is fit for production on the assembly line, has alleviateed intensity of labour promptly, has improved work efficiency again.
Drawings
Fig. 1 is a schematic cross-sectional view of a single-seat soft-hard combined sealing non-leakage regulating valve.
Fig. 2 is a schematic view of the valve element in cooperation with a valve seat.
In the figure, a valve body 1, a valve cover 2, a valve rod 3, a valve core 4, a horizontal plane 4-1 of the valve core, a sealing surface 4-2 of the valve core, a flow guide surface 4-3 of the valve core, a valve seat 5-1 of the valve seat, a valve cavity 6, a sealing gasket 7, a pressure plate 8, a pressure sleeve 9 and an o-shaped sealing ring 10 are arranged.
Detailed Description
As shown in fig. 1-2, a single-seat soft-hard combined sealing leakage-free regulating valve comprises a valve body 1, a valve cover 2, a valve rod 3, a valve core 4 and a valve seat 5, wherein the valve cover 2 is fixedly connected to the valve body 1, a valve cavity 6 is formed between the valve body 1 and the valve cover 2, the valve core 4 and the valve seat 5 are arranged in the valve cavity 6 in a matched manner, the valve cavity 6 is divided into an upper part and a lower part, two ends of the valve body 1 are respectively provided with an inlet and an outlet, the inlet is communicated with the upper part of the valve cavity 6, the outlet is communicated with the lower part of the valve cavity 6, the valve rod 3 vertically penetrates through the valve cover 2 and is connected with the valve core 4; the valve seat 5 is horizontally arranged on the valve body 1, a through hole penetrating through the valve seat 5 is formed in the valve seat, the upper section of the through hole is a sealing surface 5-1 of the valve seat, a sealing gasket 7 is arranged on the upper end face of the valve seat 5, a pressing plate 8 is fixedly connected to the valve seat 5, the pressing plate 8 presses the sealing gasket 7 to tightly fix the sealing gasket 7, the valve core 4 is arranged on the valve seat 5 and is divided into a plurality of sections from top to bottom, one section is a horizontal plane 4-1, the other section is a sealing surface 4-2, and the horizontal plane 4-1 is positioned above the sealing surface 4-2 and is excessively connected with the; the valve seat 5 is in sealing contact with the valve core 4, the horizontal plane 4-1 of the valve core is in sealing contact with the sealing gasket 7 to form a first line seal, and the sealing surface 4-2 of the valve core is in sealing contact with the sealing surface 5-1 of the valve seat to form a second line seal; a pressing sleeve 9 is further arranged in the valve cavity 6, the pressing sleeve 9 is sleeved on the outer side of the valve core 4, a gap is reserved between the pressing sleeve 9 and the valve core 4, the upper end of the pressing sleeve is abutted against the valve cover 2, the lower end of the pressing sleeve is abutted against the pressing plate 8, and an opening is formed in the side wall of the pressing sleeve 9; the lower end of the valve cover 2 extends into one section of the valve cavity 6, an upper valve cavity 2-1 is arranged in the valve cover 2, the upper valve cavity 2-1 is positioned right above the valve cavity 6, a channel is vertically arranged in the valve cover 2 and is communicated with the upper valve cavity 2-1 and the valve cavity 6, the upper end of the valve core 4 extends into the channel and is in sliding fit with the valve cover 2, and the lower end of the valve rod 3 penetrates through the upper valve cavity 2-1 and extends into the channel to be connected with the valve core 4; a plurality of inclined holes 2-2 are uniformly formed in the bottom of the upper valve cavity 2-1 in a circle, and the inclined holes 2-2 are communicated with the valve cavity 6; the valve seats 5 are vertically symmetrical; an o-shaped sealing ring 10 is also arranged between the sealing gasket 7 and the valve seat 5; one section of the valve core 4 is a flow guide surface 4-3, the flow guide surface 4-3 is positioned below the sealing surface 4-2, and the sealing surface 4-2 of the valve core is excessively connected with the flow guide surface 4-3.
The above disclosure is only for the preferred embodiment of the present invention, but not intended to limit itself, and any changes and modifications made by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.
Claims (7)
1. A single-seat soft-hard combined sealing leakage-free regulating valve comprises a valve body, a valve cover, a valve rod, a valve core and a valve seat, wherein the valve cover is fixedly connected to the valve body, a valve cavity is formed between the valve body and the valve cover, the valve core and the valve seat are arranged in the valve cavity in a matched mode, the valve cavity is divided into an upper part and a lower part, two ends of the valve body are respectively provided with an inlet/outlet, one inlet/outlet is communicated with the lower part of the valve cavity, the other inlet/outlet is communicated with the upper part of the valve cavity, the valve rod vertically penetrates through the valve cover and is connected with the valve core, and; the valve core is arranged on the valve seat and is divided into a plurality of sections from top to bottom, one section is a horizontal plane, the other section is a sealing surface, the horizontal plane is positioned above the sealing surface and is in transitional connection with the sealing surface; the valve seat is in sealing contact with the valve core, the horizontal plane of the valve core is in sealing contact with the sealing gasket to form a first line seal, and the sealing surface of the valve core is in sealing contact with the sealing surface of the valve seat to form a second line seal.
2. The single-seat soft-hard combined sealing non-leakage regulating valve according to claim 1, wherein a pressing sleeve is further arranged in the valve cavity, the pressing sleeve is sleeved outside the valve core, a gap is reserved between the pressing sleeve and the valve core, the upper end of the pressing sleeve abuts against the valve cover, the lower end of the pressing sleeve abuts against the pressing plate, and an opening is formed in the side wall of the pressing sleeve.
3. The single-seat soft-hard combined sealing non-leakage regulating valve according to claim 1, wherein the lower end of the valve cover extends into one section of the valve cavity, an upper valve cavity is arranged in the valve cover and is positioned right above the valve cavity, a passage is vertically arranged in the valve cover and is communicated with the upper valve cavity and the valve cavity, the upper end of the valve core extends into the passage and is in sliding fit with the valve cover, and the lower end of the valve rod penetrates through the upper valve cavity and extends into the passage and is connected with the valve core; a plurality of inclined holes are uniformly formed in one periphery of the bottom of the upper valve cavity and are communicated with the valve cavity through the inclined holes.
4. The single seat soft hard combination seal non-leakage regulator valve of claim 1, wherein said valve seat is vertically symmetrical.
5. The single seat soft and hard combination seal no-leakage regulating valve of claim 1, wherein an o-ring is further disposed between the sealing gasket and the valve seat.
6. The single-seat soft-hard combined sealing non-leakage regulating valve according to claim 1, wherein one section of the valve core is a flow guide surface, the flow guide surface is positioned below the sealing surface, and the sealing surface of the valve core is in transitional connection with the flow guide surface.
7. The single seat soft and hard combined seal non-leakage regulating valve according to claim 1, wherein the inlet/outlet port communicating with the upper portion of the valve chamber is an outlet port, the inlet/outlet port communicating with the lower portion of the valve chamber is an inlet port, and the inlet/outlet port is a lower inlet/outlet port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021544188.3U CN212745088U (en) | 2020-07-30 | 2020-07-30 | Single-seat soft-hard combined sealing leakage-free regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021544188.3U CN212745088U (en) | 2020-07-30 | 2020-07-30 | Single-seat soft-hard combined sealing leakage-free regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212745088U true CN212745088U (en) | 2021-03-19 |
Family
ID=75024160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021544188.3U Active CN212745088U (en) | 2020-07-30 | 2020-07-30 | Single-seat soft-hard combined sealing leakage-free regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212745088U (en) |
-
2020
- 2020-07-30 CN CN202021544188.3U patent/CN212745088U/en active Active
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