CN218883095U - Fluorine-lined safety valve capable of adjusting opening and closing pressure difference - Google Patents
Fluorine-lined safety valve capable of adjusting opening and closing pressure difference Download PDFInfo
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- CN218883095U CN218883095U CN202320177834.4U CN202320177834U CN218883095U CN 218883095 U CN218883095 U CN 218883095U CN 202320177834 U CN202320177834 U CN 202320177834U CN 218883095 U CN218883095 U CN 218883095U
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Abstract
The utility model relates to a fluorine-lined safety valve with adjustable opening and closing pressure difference, which comprises a valve body, a valve seat, a valve clack, a recoil disc, a guide sleeve, a valve cover and a pressure setting device, wherein the medium contact surfaces of the valve body and the valve seat are both lined with fluoroplastic, and the recoil disc and the guide sleeve are made of polytetrafluoroethylene materials; the method is characterized in that: the outer circular surface of the recoil disc is provided with an opening and closing pressure difference adjusting device, the opening and closing pressure difference adjusting device is formed by installing an adjusting ring on an external thread of the outer circular surface of the recoil disc through an internal thread, the outer circular surface of the upper part of the adjusting ring adopts a hexagon nut structure, and the lower part of the adjusting ring protrudes out of the lower plane of the recoil disc. The upper and lower positions of the regulating ring on the recoil disc can be regulated from the valve body discharge port, the regulating functions of the opening height and the recoil pressure of the fluorine-lined safety valve are realized, and the opening and closing differential pressure regulating performance is good.
Description
Technical Field
The utility model belongs to the valve field especially relates to an anticorrosion spring relief valve. The utility model is suitable for a relief valve of corrosive medium pipeline or container.
Background
The spring type safety valve controls the opening and closing pressure of the valve clack by utilizing the set pressure of a spring. The structure of the valve comprises a valve body, a valve seat, a valve clack, a valve cover and a spring pressure setting device, wherein the valve clack is arranged between the valve body and the valve cover through a recoil disc and a guide sleeve, the lower end face of the valve clack is matched with the valve seat to form a sealing pair, and the upper end of the valve clack is in top contact with the spring pressure setting device. In order to adjust the opening height and the recoil pressure of the valve clack, an adjusting device is generally arranged at the outlet end of the valve seat, and the position of an adjusting ring on the outlet end of the valve seat is adjusted through an adjusting screw arranged on the valve body, so that the adjustment of the opening-closing pressure difference is realized. However, for the fluorine-lined safety valve, the inner cavity of the valve body and the valve seat are both provided with fluoroplastic linings, the outlet end of the valve seat is not easy to be provided with an adjusting ring, and the valve body is easy to corrode by being provided with an adjusting screw, so that the conventional fluorine-lined safety valve is not provided with an adjusting device on the valve seat, has no functions of adjusting the opening height and the recoil pressure, and has poor performance of adjusting the opening and closing differential pressure.
Disclosure of Invention
The utility model provides a to the shortcoming that prior art exists, provide one kind and have the height of opening and the pressure adjustment function that returns, open and close the adjustable lining fluorine relief valve of opening and close pressure differential that pressure differential regulation performance is good.
Realize the utility model discloses the technical scheme of purpose does:
a fluorine-lined safety valve capable of adjusting opening and closing pressure difference comprises a valve body, a valve seat, a valve clack, a recoil disc, a guide sleeve, a valve cover and a pressure setting device, wherein medium contact surfaces of the valve body and the valve seat are both lined with fluoroplastic, and the recoil disc and the guide sleeve are made of polytetrafluoroethylene materials; the method is characterized in that: the outer circular surface of the recoil disc is provided with an opening and closing pressure difference adjusting device, the opening and closing pressure difference adjusting device is formed by installing an adjusting ring on an external thread of the outer circular surface of the recoil disc through an internal thread, the outer circular surface of the upper part of the adjusting ring adopts a hexagon nut structure, and the lower part of the adjusting ring protrudes out of the lower plane of the recoil disc.
Preferably, the valve seat is in sealing fit with a radial inner step in the inlet channel of the valve body by adopting a radial outer step, the valve seat is fixedly connected by a bolt and a nut, and the radial outer step of the valve seat and the radial inner step in the inlet channel of the valve body are lined with fluoroplastic.
The utility model discloses beneficial effect compared with prior art is that set up on the recoil dish and open and close pressure differential adjusting device, from the upper and lower position of adjusting ring on the recoil dish in the valve body discharge orifice, realized lining fluorine relief valve and opened the regulatory function of height and recoil pressure, it is opened and close pressure differential regulation performance good.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1 valve seat, 2 valve bodies, 3 sealing rings, 4 adjusting rings, 5 sealing plates, 6 recoil discs, 7 guide sleeves and 8 valve covers.
Description of the preferred embodiment
The fluorine-lined safety valve capable of adjusting opening and closing pressure difference as shown in fig. 1 comprises a valve body 2, a valve seat 1, a valve clack, a recoil disc 6, a guide sleeve 7, a valve cover 8 and a pressure setting device, wherein medium contact surfaces of the valve body 2 and the valve seat 1 are both lined with fluoroplastic, the recoil disc 6 and the guide sleeve 7 are made of polytetrafluoroethylene materials and are suitable for strong corrosive media such as acid and alkali, a guide post is arranged on the back surface of the recoil disc 6 and is in dynamic sealing fit with a guide hole of the guide sleeve 7, an upper end circular plane of the guide sleeve 7 is pressed between a middle cavity radial annular step of the valve body 2 and a lower plane of the valve cover 8, a fluorine lining layer in an inner cavity of the valve body 2 extends into the middle cavity radial annular step, the circular plane of the guide sleeve 7 and a fluorine lining layer in the middle cavity radial annular step are in pressing sealing connection, the pressure setting device is composed of a spring, a push rod and an adjusting screw sleeve, the pressure setting device is integrally installed in an inner cavity of the valve cover 8, the center of the upper end surface of the guide post on the back surface of the recoil disc 6 is connected with the lower end of the push rod, the valve clack is composed of a sealing ring 3 and a sealing plate 5, a sealing ring is installed in the back surface of the recoil disc 6 by the sealing plate 5, and is convenient to maintain and replace the sealing plate, and replace the sealing plate; the method is characterized in that: the outer circular surface of the recoil disc 6 is provided with an opening and closing pressure difference adjusting device, the opening and closing pressure difference adjusting device is formed by installing an adjusting ring 4 on an external thread of the outer circular surface of the recoil disc 6 through an internal thread, the outer circular surface of the upper part of the adjusting ring 4 adopts a hexagon nut structure, the lower part of the adjusting ring protrudes out of the lower plane of the recoil disc 6, a wrench can extend into the rotary adjusting ring 4 from a valve body discharge port, the upper position and the lower position of the adjusting ring 4 are adjusted, the opening height and the recoil pressure are adjusted, a locking nut made of a PTFE material is installed on the recoil disc 6 at the upper end of the adjusting ring 4, and the adjusting ring 4 is prevented from rotating upwards due to medium impact.
The valve seat 1 is installed by mutually sealing and matching a radial outer step and a radial inner step in an inlet channel of the valve body 2, and is fixedly connected by a bolt and a nut, and the radial outer step of the valve seat 1 and the radial inner step in the inlet channel of the valve body 2 are lined with fluoroplastic. That is, the fluoroplastic lining in the inner cavity of the valve body 2 extends to the radial inner step in the inlet channel, the fluoroplastic lining on the outer side of the sealing surface of the valve seat 1 extends to the radial outer step, and the fluoroplastic lining is tightly pressed and installed by utilizing the radial outer step of the valve seat 1 and the radial inner step in the inlet channel of the valve body 2, so that the fluoroplastic lining is prevented from falling off. Because the valve seat 1 and the valve body 2 are made of fluoroplastics with independent linings and are installed by bolts and nuts, the sealing surface of the valve seat 1 and the sealing ring 3 of the valve clack are convenient to maintain and replace.
Claims (2)
1. A fluorine-lined safety valve capable of adjusting opening and closing pressure difference comprises a valve body (2), a valve seat (1), a valve clack, a recoil disc (6), a guide sleeve (7), a valve cover (8) and a pressure setting device, wherein medium contact surfaces of the valve body (2) and the valve seat (1) are lined with fluoroplastic, and the recoil disc (6) and the guide sleeve (7) are made of polytetrafluoroethylene materials; the method is characterized in that: an opening and closing pressure difference adjusting device is arranged on the outer circular surface of the recoil disc (6), the opening and closing pressure difference adjusting device is formed by installing an adjusting ring (4) on an external thread of the outer circular surface of the recoil disc (6) through an internal thread, the outer circular surface of the upper part of the adjusting ring (4) adopts a hexagon nut structure, and the lower part of the adjusting ring protrudes out of the lower plane of the recoil disc (6).
2. The fluorine-lined safety valve with adjustable opening and closing pressure difference of claim 1, which is characterized in that: the valve seat (1) is installed by adopting the way that a radial outer step and a radial inner step in an inlet channel of the valve body (2) are mutually matched in a sealing way and fixedly connected by bolts and nuts, and the radial outer step of the valve seat (1) and the radial inner step in the inlet channel of the valve body (2) are lined with fluoroplastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320177834.4U CN218883095U (en) | 2023-02-10 | 2023-02-10 | Fluorine-lined safety valve capable of adjusting opening and closing pressure difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320177834.4U CN218883095U (en) | 2023-02-10 | 2023-02-10 | Fluorine-lined safety valve capable of adjusting opening and closing pressure difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218883095U true CN218883095U (en) | 2023-04-18 |
Family
ID=85977629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320177834.4U Active CN218883095U (en) | 2023-02-10 | 2023-02-10 | Fluorine-lined safety valve capable of adjusting opening and closing pressure difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218883095U (en) |
-
2023
- 2023-02-10 CN CN202320177834.4U patent/CN218883095U/en active Active
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