CN219529916U - Vacuum pump gas town device - Google Patents
Vacuum pump gas town device Download PDFInfo
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- CN219529916U CN219529916U CN202320270536.XU CN202320270536U CN219529916U CN 219529916 U CN219529916 U CN 219529916U CN 202320270536 U CN202320270536 U CN 202320270536U CN 219529916 U CN219529916 U CN 219529916U
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- valve
- vacuum pump
- plug body
- cavity
- air outlet
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- 238000009434 installation Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Abstract
The utility model discloses a vacuum pump gas ballast device, which comprises a valve body and a plug body movably matched in a valve cavity of the valve body; the valve cavity is provided with an air inlet and an air outlet which are positioned at the valve body side, and the air outlet is correspondingly positioned in the pump cavity of the vacuum pump; when the plug body spans the air outlet hole and moves in the valve cavity, the plug body can form a valve opening state positioned below the air outlet hole and a valve closing state positioned between the air inlet and the air outlet hole. According to the vacuum pump gas ballast device, the valve opening and closing operation is realized by adjusting the position state of the plug body in the valve cavity relative to the air inlet and the air outlet, so that the structure of the vacuum pump gas ballast valve device is simplified, the failure rate is reduced, and the service life is prolonged.
Description
Technical Field
The utility model belongs to the technical field of vacuum pump parts, and particularly relates to a vacuum pump gas ballast device.
Background
The air ballast valve of the vacuum pump can guide external air into the pump cavity, so that the pressure of the pump cavity reaches an exhaust state in advance, and water vapor condensation is prevented. The existing gas ballast valve is composed of a valve body, a connecting pipe and a check valve, wherein the valve body and the check valve are main components, the structural complexity is high, the comprehensive technical failure rate of the gas ballast valve can be improved under the gas ballast working condition, and the gas ballast stability is affected to a certain extent.
Disclosure of Invention
The utility model aims to: in order to overcome the defects in the prior art, the utility model provides the vacuum pump ballast device, which realizes valve opening and closing operation by adjusting the position state of a plug body in a valve cavity relative to an air inlet and an air outlet, simplifies the structure of the vacuum pump ballast device, reduces the failure rate and prolongs the service life.
The technical scheme is as follows: in order to achieve the purpose, the utility model provides a vacuum pump gas ballast device, which comprises a valve body and a plug body movably matched in a valve cavity of the valve body; the valve cavity is provided with an air inlet and an air outlet which are positioned at the valve body side, and the air outlet is correspondingly positioned in the pump cavity of the vacuum pump; when the plug body spans the air outlet hole and moves in the valve cavity, the plug body can form a valve opening state positioned below the air outlet hole and a valve closing state positioned between the air inlet and the air outlet hole.
Further, the valve plug comprises an operating rod movably connected with the valve body, the operating rod stretches into the valve cavity to be connected with the plug body, and the plug body performs upward movement through the pulling force of the operating rod.
Further, the plug body is axially connected to the operating rod in a sliding manner, and a supporting part for supporting the plug body is arranged on the operating rod; the plug body has elastic resistance against the valve body in the valve cavity, and the plug body is propped against the supporting part through the elastic resistance; in the valve-opening state, the plug body overcomes the pressure force in the pump cavity of the vacuum pump through elastic resistance and moves downwards; in the valve closing state, the plug body moves upwards against the elastic resistance by the pulling force provided by the operating rod.
Further, the elastic member is correspondingly arranged in the valve cavity, and the elastic resistance is formed by the elastic member in a state of keeping the elastic plug body.
Further, the movable connection mode of the operating rod and the valve body is threaded connection.
Further, the valve body is composed of a valve shell, a valve mounting part and a valve extending part which are connected in sequence; the valve body is correspondingly arranged at a gas ballast hole site of the vacuum pump through the valve installation part, and the valve extending part extends into a pump cavity of the vacuum pump.
The beneficial effects are that: the utility model relates to a vacuum pump gas ballast device, which has the beneficial effects that: according to the utility model, the valve opening and closing operation is realized by adjusting the position state of the plug body in the valve cavity relative to the air inlet and the air outlet, in the valve opening state, the air inlet is communicated with the air outlet through the valve cavity, the external air enters the pump cavity, so that the pressure in the pump cavity is increased, the air is exhausted in advance to reach the exhaust state, in the valve closing state, the air inlet and the air outlet are blocked by the plug body and are not communicated, the structure of the gas-ballast valve device of the vacuum pump is simplified, the failure rate is reduced, the service life is prolonged, and the valve is suitable for large-scale popularization.
Drawings
FIG. 1 is a schematic view of a semi-sectional structure of a ballast device of the present utility model in an open valve condition;
FIG. 2 is a schematic diagram of the semi-sectional structure of the ballast device of the present utility model in a closed state;
FIG. 3 is a schematic diagram of the overall structure of the ballast device of the present utility model.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
The existing gas ballast valve is composed of a valve body, a connecting pipe and a check valve, wherein the valve body and the check valve are main components, the structural complexity is high, the comprehensive technical failure rate of the gas ballast valve can be improved under the gas ballast working condition, and the gas ballast stability is affected to a certain extent.
In order to solve the problems, the utility model starts from the direction of simplifying and optimizing the ballast structure, and the technical scheme is as shown in the accompanying drawings 2 and 3, and the vacuum pump ballast device comprises a valve body 1 and a plug body 2 movably matched in a valve cavity 10 of the valve body 1, wherein the valve body 1 is composed of a valve shell 11, a valve mounting part 12 and a valve extending part 13 which are connected in sequence; the valve body 1 is correspondingly arranged at a gas ballast hole site of the vacuum pump through a valve installation part 12, and the valve extending part 13 extends into a pump cavity of the vacuum pump. The valve cavity 10 is provided with an air inlet 8 and an air outlet 7 which are positioned at the side of the valve body 1, and the air outlet 7 is correspondingly positioned in a pump cavity of the vacuum pump; when the plug body 2 moves in the valve cavity 10 across the air outlet hole 7, the plug body can form a valve opening state positioned below the air outlet hole 7 and a valve closing state positioned between the air inlet 8 and the air outlet hole 7. In the valve opening state, the air inlet 8 is communicated with the air outlet hole 7 through the valve cavity 10, external air can enter the valve cavity 10 through the air inlet 8, and then enter the pump cavity from the air outlet hole 7, so that the pressure in the pump cavity is increased, the exhaust state is reached in advance, the exhaust is carried out, and water vapor is also discharged along with the exhaust; in the valve closing state, the air inlet 8 and the air outlet 7 are blocked by the plug body 2 and are in a non-conducting state. Therefore, the valve opening and closing operation is realized by adjusting the position state of the plug body 2 in the valve cavity 10 relative to the air inlet 8 and the air outlet 7, the structure of the gas ballast valve device of the vacuum pump is simplified, the failure rate is reduced, and the service life is prolonged.
The utility model comprises an operating rod 3 movably connected with a valve body 1, more specifically, the movable connection mode of the operating rod 3 and the valve body 1 is threaded screwing, the top of the operating rod 3 is connected with a screwing handle 6, the operating rod 3 stretches into a valve cavity 10 to be connected with a plug body 2, and the plug body 2 performs upward moving movement through the pulling force of the operating rod 3, and particularly, the operating rod 3 is manually rotated through the screwing handle 6.
More specifically, the plug body 2 is axially slidably connected to the operating rod 3, the operating rod 3 is provided with a supporting part 9 for supporting the plug body 2, and the supporting part 9 is a supporting plate for supporting the plug body 2, which is installed at the bottom of the operating rod 3; the movement of the plug body 2 in the valve chamber 10 presents an elastic resistance with respect to the valve body 1, by means of which said plug body 2 rests against the support 9, the utility model comprising an elastic element 4 correspondingly arranged in the valve chamber 10, the elastic resistance being formed by said elastic element 4 in a state of being held against the plug body 2. As shown in fig. 1, in the valve-opened state, the plug body 2 moves downward against the pressure force in the pump cavity of the vacuum pump through elastic resistance; in the closed state, as shown in fig. 2, the plug body 2 is moved upward against the elastic resistance by the pulling force provided by the operating lever 3.
In addition, the gas ballast device of the utility model also does not lose the non-return function, and prevents gas from being sprayed out of the pump cavity. When the pressure in the pump cavity is too high and the check is needed, the air pressure in the pump cavity pushes the plug body 2 to overcome the elastic resistance and move upwards to close the valve, so that the vacuum pump air ballast device with complete functions is formed.
The foregoing is only a preferred embodiment of the utility model, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.
Claims (6)
1. The utility model provides a vacuum pump gas town equipment which characterized in that: comprises a valve body (1) and a plug body (2) movably matched in a valve cavity (10) of the valve body (1); the valve cavity (10) is provided with an air inlet (8) and an air outlet hole (7) which are positioned at the side of the valve body (1), and the air outlet hole (7) is correspondingly positioned in the pump cavity of the vacuum pump; when the plug body (2) moves in the valve cavity (10) across the air outlet hole (7), the plug body can form a valve opening state positioned below the air outlet hole (7) and a valve closing state positioned between the air inlet (8) and the air outlet hole (7).
2. A vacuum pump ballast apparatus according to claim 1, wherein: the valve comprises an operating rod (3) movably connected with a valve body (1), wherein the operating rod (3) stretches into a valve cavity (10) to be connected with a plug body (2), and the plug body (2) performs upward movement through the pulling force of the operating rod (3).
3. A vacuum pump ballast apparatus according to claim 2, wherein: the plug body (2) is axially connected to the operating rod (3) in a sliding manner, and a supporting part (9) for supporting the plug body (2) is arranged on the operating rod (3); the plug body (2) has elastic resistance in the valve cavity (10) relative to the valve body (1), and the plug body (2) is abutted against the supporting part (9) through the elastic resistance; in the valve opening state, the plug body (2) overcomes the pressure force in the pump cavity of the vacuum pump through elastic resistance and moves downwards; in the valve closing state, the plug body (2) moves upwards against elastic resistance by the pulling force provided by the operating rod (3).
4. A vacuum pump ballast apparatus according to claim 3, wherein: comprising elastic members (4) correspondingly arranged in the valve cavity (10), wherein the elastic resistance is formed by the elastic members (4) keeping the state of the elastic plug body (2).
5. A vacuum pump ballast apparatus according to claim 3, wherein: the movable connection mode of the operating rod (3) and the valve body (1) is threaded connection.
6. A vacuum pump ballast apparatus according to any of claims 1 to 5, wherein: the valve body (1) is composed of a valve shell (11), a valve mounting part (12) and a valve extending part (13) which are connected in sequence; the valve body (1) is correspondingly arranged at a gas ballast hole site of the vacuum pump through the valve installation part (12), and the valve extending part (13) extends into a pump cavity of the vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320270536.XU CN219529916U (en) | 2023-02-21 | 2023-02-21 | Vacuum pump gas town device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320270536.XU CN219529916U (en) | 2023-02-21 | 2023-02-21 | Vacuum pump gas town device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219529916U true CN219529916U (en) | 2023-08-15 |
Family
ID=87644063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320270536.XU Active CN219529916U (en) | 2023-02-21 | 2023-02-21 | Vacuum pump gas town device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219529916U (en) |
-
2023
- 2023-02-21 CN CN202320270536.XU patent/CN219529916U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |