CN213982046U - Hard-sealing pneumatic control switch valve - Google Patents
Hard-sealing pneumatic control switch valve Download PDFInfo
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- CN213982046U CN213982046U CN202023268127.1U CN202023268127U CN213982046U CN 213982046 U CN213982046 U CN 213982046U CN 202023268127 U CN202023268127 U CN 202023268127U CN 213982046 U CN213982046 U CN 213982046U
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Abstract
The utility model relates to a pneumatic valve, in particular to sealed gas accuse ooff valve firmly, which comprises a valve body, the case, the disk seat, the lateral wall is seted up to the valve body air inlet, the bottom surface is seted up to the gas outlet, central point is equipped with the through-hole in the valve body, the through-hole periphery is equipped with the ring chamber, the air inlet connects the ring chamber, the case sets up in the through-hole, through-hole gas outlet one end is equipped with the collar tie, it has the jump ring groove to adjoin to open on the collar tie of collar tie, the disk seat is located on the mount tie, disk seat outside top surface is horizontal anchor ring, inboard top surface is the toper anchor ring, horizontal anchor ring with install the jump ring butt in the jump ring groove, thereby make the disk seat firmly fixed, the toper anchor ring pastes to lean on with the case and forms sealedly as sealed face. The utility model discloses adopt hard seal between case and the disk seat, for the life that traditional soft seal improved greatly. The structure of the through hole and the annular cavity is adopted for hard sealing, the valve core and the valve seat are arranged in the through hole, sealing is realized through annular surface contact between the valve core and the valve seat, and the structure is simple.
Description
Technical Field
The utility model relates to a pneumatic valve, in particular to sealed gas accuse ooff valve firmly.
Background
In the mechanical field, a large-diameter and large-flow pneumatic valve is needed in many occasions, and a diaphragm valve is generally selected under the prior technical background.
However, in the actual use process, the diaphragm valve has the following problems which are difficult to solve.
1. Larger valve body liners and larger diaphragm fabrication are difficult to achieve due to the limitations of the valve body liner process and diaphragm fabrication process, with common diaphragm valve diameters typically below 76 mm. Since the magnitude of the through-flow rate of gas is directly related to the magnitude of the valve diameter, if the ventilation flow rate is to be increased, only a plurality of diaphragm valves are used, which increases the complexity of the structure and assembly.
2. Because the diaphragm of the diaphragm valve is easy to generate fatigue failure under the action of dynamic stress and strain for a long time, failure modes such as diaphragm cracks, chaps and the like are generated. If the diaphragm breaks, the whole diaphragm valve is generally replaced, so that the pipeline needs to be disassembled firstly, and time and labor are wasted.
Disclosure of Invention
The utility model provides a hard sealed gas accuse ooff valve simple structure, long service life, safe and reliable to prior art not enough.
The utility model adopts the technical proposal that: a hard-sealing air-controlled switch valve comprises a valve body and a valve core, wherein an air inlet of the valve body is arranged on a side wall, an air outlet of the valve body is arranged on a bottom surface, a through hole is formed in the central part in the valve body, an annular cavity is formed in the periphery of the through hole, the air inlet is connected with the annular cavity, the through hole is communicated with the annular cavity at a position close to the bottom surface, the valve core is arranged in the through hole, a cover plate with a control air hole is installed at the top of the through hole, a reset spring is arranged between the valve core and the cover plate, the bottom of the through hole is provided with the air outlet, one end of the air outlet of the through hole is provided with an installation annular table, a clamp spring groove is formed in the installation annular table, a valve seat is arranged on the installation annular table, the bottom of the valve seat is abutted against the inner end surface of the installation annular table, the outer peripheral surface of the valve seat is abutted against the installation annular table, the top surface on the outer side of the valve seat is a horizontal annular surface, the top surface is a conical annular surface, the inner side of the conical annular surface of the horizontal annular surface is abutted against a clamp spring installed in the clamp spring groove, so that the valve seat is firmly fixed, and the conical ring surface is used as a sealing surface to be attached to the valve core to form a seal.
The hard sealing pneumatic control switch valve is characterized in that: the through hole is internally provided with a guide sleeve, and the valve core is inserted into the guide sleeve.
The hard sealing pneumatic control switch valve is characterized in that: and a lubricating grease groove is formed in the outer circumferential surface of the valve core, a lubricating grease cavity is formed between the lubricating grease groove and the guide sleeve, and lubricating grease is filled in the lubricating grease cavity.
The hard sealing pneumatic control switch valve is characterized in that: through-hole open-top is equipped with the uide bushing mounting groove, and the uide bushing top is provided with the ring wing, and the ring wing external diameter is less than uide bushing mounting groove internal diameter, and the uide bushing suit is in the through-hole, and after the installation is gone into the position, form an annular seal groove between the ring wing of uide bushing and the uide bushing mounting groove, installation sealing washer in the seal groove, apron are fixed in the valve body top surface through the screw, seals through-hole open-top and extrudes the sealing washer in the seal groove and forms airtightly.
The utility model discloses adopt hard seal between case and the disk seat, for the life that traditional soft seal improved greatly. The valve core and the valve seat are arranged in the through hole, sealing is achieved through annular surface contact between the valve core and the valve seat, the structure is simple, and the valve core still has extremely high corresponding speed even serving as a large-diameter valve.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the valve body structure of the present invention;
fig. 3 is a schematic view of the valve seat structure of the present invention.
In the figure: 1-valve body, 11-through hole, 12-guide sleeve mounting groove, 13-mounting ring table, 14-clamp spring groove, 15-ring cavity,
2-cover plate, 21-control air hole,
3-valve core, 31-lubricating grease groove,
4-valve seat, 41-horizontal ring surface, 42-conical ring surface,
5-guide sleeve, 6-reset spring.
Detailed Description
As shown in fig. 1 and 2, the hard-sealing pneumatic control switch valve comprises a valve body 1, a cover plate 2, a valve core 3, a valve seat 4, a guide sleeve 5 and a return spring 6,
the valve body 1 is provided with a through hole 11 along the axis, the top opening of the through hole 11 is provided with a guide sleeve mounting groove 12, the top of the guide sleeve 5 is provided with a ring wing, the outer diameter of the ring wing is smaller than the inner diameter of the guide sleeve mounting groove 12, the guide sleeve 5 is sleeved in the through hole 11, after the guide sleeve is installed in the position, an annular sealing groove is formed between the ring wing of the guide sleeve 5 and the guide sleeve mounting groove 12, a sealing ring is installed in the sealing groove, the cover plate 2 is fixed on the top surface of the valve body 1 through screws, the sealing ring in the sealing groove is sealed and extruded to form airtightness, and the center part of the cover plate 2 is provided with a control air hole 21. The valve core 3 is arranged in an inner hole of the guide sleeve 5, the reset spring 6 is arranged between the cover plate 2 and the valve core 3, and grooves for mounting springs are respectively formed in the bottom of the cover plate 2 and the top of the valve core 3.
An opening at the bottom of the through hole 11 is an air outlet, one end of the air outlet of the through hole 11 is provided with a mounting ring platform 13, a clamp spring groove 14 is formed in a mounting ring surface adjacent to the mounting ring platform 13, and a clamp spring is installed in the clamp spring groove 14. The valve seat 4 is arranged on the mounting ring platform, the bottom surface of the valve seat 4 is abutted against the inner end surface of the mounting ring platform 13, the outer peripheral surface of the valve seat 4 is abutted against the adjacent ring surface of the mounting ring platform, the top surface of the valve seat 4 comprises a horizontal ring surface 41 close to the outer side and a conical ring surface 42 close to the inner side, wherein the horizontal ring surface 41 is abutted against a clamp spring arranged in the clamp spring groove 14, and the conical ring surface 42 is used as a sealing surface and is abutted against the valve core 3 to form sealing.
The periphery of the through hole 11 is an annular cavity 15, the side wall of the valve body 1 is provided with an air inlet connected with the annular cavity 15, and the annular cavity 15 is communicated with the through hole 11 at a position close to the bottom surface of the valve body 1.
The outer peripheral surfaces of the valve core 3 and the valve seat 4 are provided with sealing elements, wherein the valve core 3 is provided with two annular grooves for installing the sealing elements, a lubricating grease groove 31 is also arranged between the two annular grooves, a lubricating grease cavity is formed between the lubricating grease groove and the guide sleeve 5, and the lubricating grease cavity is filled with lubricating grease.
When the control air hole 21 is not connected with the control air pressure, the valve core 3 is attached to the valve seat 4 under the action of the reset spring 6, when the air inlet is connected with the working air pressure, the working air pressure acts on the lower end of the valve core 3 to overcome the pre-tightening force of the reset spring 6, the valve core 3 leaves the valve seat 4, at the moment, the switch valve is in an open state, and air enters from the air inlet, passes through the annular cavity and the through hole and is finally discharged from the air outlet.
When the control air hole 21 is connected with the control air pressure, the control air pressure acts on the upper end of the valve core 3, the pretightening force of the reset spring 6 is superposed, so that the bottom of the valve core 3 is firmly attached to the valve seat 4, the air inlet is connected with the working air pressure, under the normal condition, the working air pressure and the control air pressure are the same air source, under the condition that the air pressure is the same, the upper acting area of the valve core 3 is larger than the lower acting area, and simultaneously, the pretightening force of the reset spring 6 is also arranged, so that the valve core 3 is tightly pressed on the valve seat 4, and at the moment, the switch valve is in a closed state.
Claims (4)
1. The utility model provides a sealed gas accuse ooff valve firmly, includes valve body (1), case (3), the lateral wall is seted up in the valve body air inlet, and the bottom surface, characterized by are seted up in the gas outlet: the valve body is characterized in that a through hole is formed in the center of the valve body, an annular cavity is formed in the periphery of the through hole, the air inlet is connected with the annular cavity, the through hole is communicated with the annular cavity at a position close to the bottom surface, the valve core (3) is arranged in the through hole, a cover plate (2) with a control air hole is installed at the top of the through hole, a reset spring (6) is arranged between the valve core (3) and the cover plate (2), the bottom of the through hole is an air outlet, an installation annular table is arranged at one end of the air outlet of the through hole, a clamp spring groove is formed in an installation annular surface adjacent to the installation annular table, a valve seat (4) is arranged on the installation annular table, the bottom surface of the valve seat is abutted to the inner end surface of the installation annular table, the outer peripheral surface of the valve seat is abutted to the installation annular table, the outer side top surface of the valve seat is a horizontal annular surface, the inner side top surface is a conical annular surface, the horizontal annular surface is abutted to the clamp spring in the clamp spring groove, and the valve seat (4) is firmly fixed, the conical ring surface is used as a sealing surface to be attached to the valve core (3) to form a seal.
2. The hard sealing pneumatic control switch valve according to claim 1, which is characterized in that: a guide sleeve (5) is arranged in the through hole, and the valve core (3) is inserted into the guide sleeve (5).
3. The hard sealing pneumatic control switch valve according to claim 2, which is characterized in that: and a lubricating grease groove is formed in the outer circumferential surface of the valve core (3), a lubricating grease cavity is formed between the lubricating grease groove and the guide sleeve (5), and lubricating grease is filled in the lubricating grease cavity.
4. The hard sealing pneumatic control switch valve according to claim 2, which is characterized in that: through-hole open-top is equipped with the uide bushing mounting groove, uide bushing (5) top is provided with the ring wing, the ring wing external diameter is less than uide bushing mounting groove internal diameter, uide bushing (5) suit is in the through-hole, after the installation is gone into the position, form an annular seal groove between the ring wing of uide bushing (5) and the uide bushing mounting groove, install the sealing washer in the seal groove, apron (2) are fixed in valve body (1) top surface through the screw, seal the sealing washer in through-hole open-top and the extrusion seal groove and form airtightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023268127.1U CN213982046U (en) | 2020-12-30 | 2020-12-30 | Hard-sealing pneumatic control switch valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023268127.1U CN213982046U (en) | 2020-12-30 | 2020-12-30 | Hard-sealing pneumatic control switch valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213982046U true CN213982046U (en) | 2021-08-17 |
Family
ID=77249038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023268127.1U Active CN213982046U (en) | 2020-12-30 | 2020-12-30 | Hard-sealing pneumatic control switch valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213982046U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775795A (en) * | 2021-09-08 | 2021-12-10 | 无锡理奇智能装备有限公司 | One-way back pressure valve |
-
2020
- 2020-12-30 CN CN202023268127.1U patent/CN213982046U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775795A (en) * | 2021-09-08 | 2021-12-10 | 无锡理奇智能装备有限公司 | One-way back pressure valve |
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