CN210423857U - Plastic safety valve - Google Patents
Plastic safety valve Download PDFInfo
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- CN210423857U CN210423857U CN201921513780.4U CN201921513780U CN210423857U CN 210423857 U CN210423857 U CN 210423857U CN 201921513780 U CN201921513780 U CN 201921513780U CN 210423857 U CN210423857 U CN 210423857U
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- valve
- seat
- valve body
- pressure adjusting
- clack
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Abstract
The utility model provides a plastic safety valve, which comprises a valve body, be equipped with the import that is located valve body one end on the valve body, be located the export of valve body side and be located the pressure regulation mouth of the one end relative with the import on the valve body, be equipped with the interior runner of intercommunication import and pressure regulation mouth in the valve body, the valve body is equipped with the one end terminal surface of pressure regulation mouth and is equipped with the terminal surface slot, makes it form the disk seat between terminal surface slot and interior runner crossing, terminal surface slot bottom is equipped with the side runner, side runner and export intercommunication, the one end outside that the valve body was equipped with the pressure regulation mouth is equipped with the external screw thread, the external screw thread top spin has the valve gap, be equipped with the valve clack that offsets with the disk seat in the valve gap, import department is equipped with first internal thread, first internal thread top. The utility model has the advantages of simple structure, bearing capacity is high, and sealed reliable and corrosion-resistant effect is good.
Description
Technical Field
The utility model relates to a valve field, concretely relates to plastic safety valve.
Background
The safety valve is widely applied to pipelines of non-corrosive media and corrosive media such as water, petroleum, natural gas and steam, and has the advantages of small flow resistance, flexible opening and closing, long service life, safety, reliability, compact structure and the like. The medium property of use occasion often can be considered when using to the relief valve, to some corrosive medium, often need select for use the fluorine lining valve, but its production technology is comparatively complicated when the fluorine lining valve is produced, and the price is expensive, and the fluorine lining layer is thinner, in case fail to effectively laminate with the valve body inner wall when producing, the medium can promote the fluorine lining layer of this position and paste valve body inner wall when bearing pressure, causes the appearance of the condition such as fluorine lining layer fracture easily.
SUMMERY OF THE UTILITY MODEL
Based on the problem, the utility model aims to provide a simple structure, bearing capacity is high, sealed reliable and the good plastics relief valve of corrosion-resistant effect.
Aiming at the problems, the following technical scheme is provided: a plastic safety valve comprises a valve body, wherein the valve body is of a T-shaped three-way structure, an inlet positioned at one end of the valve body, an outlet positioned on the side surface of the valve body and a pressure adjusting port positioned at one end, opposite to the inlet, of the valve body are arranged on the valve body, an inner flow passage for communicating the inlet with the pressure adjusting port is arranged in the valve body, a terminal surface groove is formed in the end surface of one end, provided with the pressure adjusting port, of the valve body, a valve seat is formed between the terminal surface groove and the opening of the inner flow passage, a side flow passage is arranged at the bottom of the terminal surface groove and is communicated with the outlet, an external thread is arranged outside the end, provided with the pressure adjusting port, a valve cover is screwed on the external thread, a valve clack abutted against the valve seat is arranged in the valve cover, a first internal thread is arranged at the inlet, an inlet flange is, the valve body, the valve cover, the inlet flange and the outlet flange are all made of fluoroplastic vehicle, bolt holes are formed in the inlet flange and the outlet flange, and torsion planes are uniformly distributed on an outer cylindrical wall at the top of the valve cover along the circumferential direction of the outer cylindrical wall; the valve cover is provided with a sliding cavity towards one end of the pressure adjusting opening, the valve clack is located in the sliding cavity and slides along the axial direction of the sliding cavity, the valve clack is in sealing fit with the inner wall of the sliding cavity, and a valve closing spring is arranged between the valve clack and the bottom of the sliding cavity.
In the structure, the valve body, the valve cover, the inlet flange and the outlet flange are directly processed in a turning mode and are assembled through threaded connection, the contact surface of the fluoroplastic can generate a sealing effect when stressed, so that an effective sealing effect can be guaranteed on the premise that a sealing ring is not installed, the integral structure is simple, the processing is convenient, the production cost is reduced, the inlet flange and the outlet flange can be assembled in a screwing mode through the bolt holes as acting points when the inlet flange and the outlet flange are installed, the twisting plane on the valve cover can be assembled in a twisting mode through matching with a wrench, the outer cylindrical wall of the valve clack is matched with the inner cylindrical wall of the sliding cavity of the valve cover in a sliding sealing mode when the valve clack is sealed in a matching mode with the valve seat to stop flow, and the medium.
The utility model discloses further set up to, the one end of disk seat pressure adjustment mouth dorsad is equipped with the pressure adjustment screw that communicates with sliding chamber, pressure adjustment screw is screwed on the pressure adjustment screw and is had pressure adjusting screw, be equipped with the valve clack seat between valve closing spring and the valve clack, the one end that valve closing spring and valve clack seat are relative is equipped with the spring footstock that offsets with pressure adjusting screw.
In the structure, the pressure adjusting screw compresses the valve closing spring to control the opening pressure of the safety valve by adjusting the depth, the valve clack seat is used for separating the valve closing spring from the valve clack to avoid direct contact of the valve closing spring and the valve clack and ensure the normal sliding direction of the valve clack, and the spring top seat is used as a supporting member between the valve closing spring and the pressure adjusting screw.
The utility model discloses further set up to, valve lamella seat is sliding clearance fit with sliding chamber inner wall.
In the structure, the valve clack seat can be prevented from being inclined, so that the valve clack is prevented from being inclined when sliding.
The utility model discloses further set up to, spring footstock top surface center is equipped with the vertebra and holes, the one end that pressure adjusting screw is located smooth intracavity is equipped with the conical head with the vertebra hole adaptation.
In the structure, the verticality and the concentricity of the spring top seat can be ensured.
The utility model discloses further set up to, the vertebra hole is equipped with lubricating grease with the conical head surface.
In the structure, the friction between the pressure adjusting screw and the spring top seat during rotation is reduced.
The utility model discloses further set up to, the valve petal seat is fluoroplastics.
The utility model discloses further set up to, the spring footstock is fluoroplastics.
In the above-mentioned structure, fluoroplastics's valve clack seat and spring footstock can reduce the wearing and tearing when removing, can utilize self moist nature assurance sensitivity simultaneously.
The utility model discloses further set up to, the disk seat external diameter is less than the valve clack diameter.
In the structure, after the valve clack is opened, the medium can flow into the end surface groove.
The utility model discloses further set up to, the valve clack is fluoroplastics.
In the above-mentioned structure, can effectively guarantee anticorrosive effect and the sealed and lubricated effect when sliding.
The utility model has the advantages that: the valve body, the valve cover, the inlet flange and the outlet flange are directly processed in a turning mode and are assembled through threaded connection, the contact surface of fluoroplastics can generate a sealing effect when the fluoroplastics are stressed, so that an effective sealing effect can be guaranteed on the premise of not installing a sealing ring, the whole structure is simple, the processing is convenient, the production cost is reduced, the inlet flange and the outlet flange can be assembled in a screwing mode through the bolt holes as acting points when the inlet flange and the outlet flange are installed, the torsion plane on the valve cover can be assembled in a twisting mode through matching with a wrench, the outer cylindrical wall of the valve clack is matched with the inner cylindrical wall of the sliding cavity of the valve cover in a sliding sealing mode when the valve clack is sealed and cut off in a matching mode with the valve seat.
Drawings
Fig. 1 is a schematic view of the full-section structure of the present invention.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1 according to the present invention.
The reference numbers in the figures mean: 10-a valve body; 11-an inlet; 111-a first internal thread; 12-an outlet; 121-a second internal thread; 13-a pressure regulating port; 14-inner flow channel; 15-end face grooves; 16-a valve seat; 17-side flow channel; 18-external threads; 20-valve cover; 21-a valve flap; 22-torsional plane; 23-a slide cavity; 24-a valve closing spring; 25-pressure adjusting screw holes; 26-a pressure adjusting screw; 261-conical head; 27-a valve flap seat; 28-spring top seat; 281-vertebral arch; 30-inlet flange; 31-an outlet flange; 32-bolt hole.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, a plastic safety valve as shown in fig. 1 and 2 includes a valve body 10, the valve body 10 is a T-shaped three-way structure, an inlet 11 is provided at one end of the valve body 10 on the valve body 10, an outlet 12 is provided at a side surface of the valve body 10, and a pressure adjusting port 13 is provided at an end of the valve body 10 opposite to the inlet 11, an inner flow passage 14 communicating the inlet 11 with the pressure adjusting port 13 is provided in the valve body 10, an end surface groove 15 is provided on an end surface of the valve body 10 at which the pressure adjusting port 14 is provided, such that a valve seat 16 is formed between the end surface groove 15 and the inner flow passage 14, a side flow passage 17 is provided at a bottom of the end surface groove 15, the side flow passage 17 is communicated with the outlet 12, an external thread 18 is provided on an end of the valve body 10 at which the pressure adjusting port 13 is provided, a valve cover 20 is screwed on the, a first internal thread 111 is arranged at the inlet 11, an inlet flange 30 is screwed on the first internal thread 111, a second internal thread 121 is arranged at the outlet 12, an outlet flange 31 is screwed on the second internal thread 121, the valve body 10, the valve cover 20, the inlet flange 30 and the outlet flange 31 are all made of fluoroplastic vehicle, bolt holes 32 are arranged on the inlet flange 30 and the outlet flange 31, and torsion planes 22 are uniformly distributed on the outer cylindrical wall of the top of the valve cover 20 along the circumferential direction; one end of the valve cover 20 facing the pressure adjusting port 14 is provided with a sliding cavity 23, the valve flap 21 is positioned in the sliding cavity 23 and slides along the axial direction of the sliding cavity 23, the valve flap 21 is in sealing fit with the inner wall of the sliding cavity 23, and a valve closing spring 24 is arranged between the valve flap 21 and the bottom of the sliding cavity 23.
In the structure, the valve body 10, the valve cover 20, the inlet flange 30 and the outlet flange 31 are directly processed in a turning mode and are assembled through threaded connection, because the contact surface of fluoroplastics can generate a sealing effect when stressed, an effective sealing effect can be guaranteed on the premise that a sealing ring is not installed, the integral structure is simple, the processing is convenient, and the reduction of the production cost is facilitated, the inlet flange 30 and the outlet flange 31 can be screwed and assembled through the bolt holes 32 as acting points when the valve is installed, the torsion plane 22 on the valve cover 20 can be twisted and assembled with the wrench in a matching mode, the outer cylindrical wall of the valve clack 21 is in sliding sealing fit with the inner cylindrical wall of the sliding cavity 23 of the valve cover 20 when the valve clack is matched and sealed with the valve seat 16 for closure, and leakage of a medium entering the sliding cavity 23 is effectively avoided.
In this embodiment, a pressure adjusting screw hole 25 communicating with the sliding chamber 23 is formed in one end of the valve seat 20 facing away from the pressure adjusting port 13, a pressure adjusting screw 26 is screwed on the pressure adjusting screw hole 25, a valve flap seat 27 is formed between the valve closing spring 24 and the valve flap 21, and a spring top seat 28 abutting against the pressure adjusting screw 26 is formed in one end of the valve closing spring 24 opposite to the valve flap seat 27.
In the above structure, the pressure adjusting screw 26 compresses the valve closing spring 24 to control the opening pressure of the safety valve by adjusting the depth, the valve flap seat 27 is used to separate the valve closing spring 24 from the valve flap 21, to avoid direct contact between the two and ensure the normal sliding direction of the valve flap 21, and the spring top seat 28 is used as a supporting member between the valve closing spring 242 and the pressure adjusting screw 26.
In this embodiment, the valve flap seat 27 is in sliding clearance fit with the inner wall of the sliding cavity 23.
In the above configuration, the valve flap seat 27 is prevented from being inclined, and thus the valve flap 21 is prevented from being inclined when sliding.
In this embodiment, a cone 281 is disposed in the center of the top surface of the spring top seat 28, and a cone 261 adapted to the cone 281 is disposed at one end of the pressure adjusting screw 26 located in the inner cavity of the sliding cavity 23.
In the above structure, the perpendicularity and concentricity of the spring top seat 28 can be ensured.
In this embodiment, the surfaces of the cone 281 and the cone 261 are provided with grease.
In the above configuration, friction between the pressure adjustment screw 26 and the spring top seat 28 when it rotates is reduced.
In this embodiment, the valve flap seat 27 is made of fluoroplastic.
In this embodiment, the spring top seat 28 is made of fluoroplastic.
In the above structure, the valve flap seat 27 and the spring top seat 28 of the fluoroplastic can reduce the abrasion during movement, and can ensure the sensitivity by utilizing the self-lubricating property.
In this embodiment, the outer diameter of the valve seat 16 is smaller than the diameter of the valve flap 21.
In the structure, after the valve clack 21 is opened, the medium can flow into the end surface groove 15.
In this embodiment, the valve flap 21 is fluoroplastic.
In the above-mentioned structure, can effectively guarantee anticorrosive effect and the sealed and lubricated effect when sliding.
The utility model has the advantages that: the valve body 10, the valve cover 20, the inlet flange 30 and the outlet flange 31 are directly processed in a turning mode and are assembled through threaded connection, and the fluoroplastic can generate a sealing effect on a contact surface when stressed, so that an effective sealing effect can be guaranteed on the premise that a sealing ring is not installed, the whole structure is simple, the processing is convenient, and the reduction of the production cost is facilitated.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations of the above assumption should also be regarded as the protection scope of the present invention.
Claims (9)
1. A plastic safety valve comprises a valve body, and is characterized in that: the valve body is of a T-shaped three-way structure, an inlet positioned at one end of the valve body, an outlet positioned at the side surface of the valve body and a pressure adjusting port positioned at one end of the valve body opposite to the inlet are arranged on the valve body, an inner flow passage for communicating the inlet with the pressure adjusting port is arranged in the valve body, a end surface groove is arranged on the end surface of one end of the valve body provided with the pressure adjusting port, so that a valve seat is formed between the end surface groove and the inner flow passage opening, a side flow passage is arranged at the bottom of the end surface groove and is communicated with the outlet, an external thread is arranged outside the end of the valve body provided with the pressure adjusting port, a valve cover is screwed on the external thread, a valve clack abutted against the valve seat is arranged in the valve cover, a first internal thread is arranged at the inlet, an inlet flange is screwed on the, the valve body, the valve cover, the inlet flange and the outlet flange are all made of fluoroplastic vehicle; the valve cover is provided with a sliding cavity towards one end of the pressure adjusting opening, the valve clack is located in the sliding cavity and slides along the axial direction of the sliding cavity, the valve clack is in sealing fit with the inner wall of the sliding cavity, and a valve closing spring is arranged between the valve clack and the bottom of the sliding cavity.
2. A plastic safety valve according to claim 1, wherein: the valve comprises a valve seat, a sliding cavity is arranged in the valve seat, a valve clack seat is arranged between the valve seat and the valve clack, and a spring top seat which is abutted against the pressure adjusting screw rod is arranged at one end, back to the pressure adjusting port, of the valve seat.
3. A plastic safety valve according to claim 2, wherein: the valve clack seat is in sliding clearance fit with the inner wall of the sliding cavity.
4. A plastic safety valve according to claim 2, wherein: the center of the top surface of the spring top seat is provided with a cone pit, and one end of the pressure adjusting screw rod, which is positioned in the inner cavity of the sliding cavity, is provided with a cone head matched with the cone pit.
5. A plastic safety valve according to claim 4, wherein: lubricating grease is arranged on the surfaces of the cone pits and the cone heads.
6. A plastic safety valve according to claim 4, wherein: the valve flap seat is fluoroplastic.
7. A plastic safety valve according to claim 4, wherein: the spring top seat is made of fluoroplastic.
8. A plastic safety valve according to claim 1, wherein: the outer diameter of the valve seat is smaller than the diameter of the valve clack.
9. A plastic safety valve according to claim 1, wherein: the valve clack is fluoroplastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921513780.4U CN210423857U (en) | 2019-09-11 | 2019-09-11 | Plastic safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921513780.4U CN210423857U (en) | 2019-09-11 | 2019-09-11 | Plastic safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210423857U true CN210423857U (en) | 2020-04-28 |
Family
ID=70366677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921513780.4U Active CN210423857U (en) | 2019-09-11 | 2019-09-11 | Plastic safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210423857U (en) |
-
2019
- 2019-09-11 CN CN201921513780.4U patent/CN210423857U/en active Active
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