CN210318683U - Built-in air quantity regulating valve - Google Patents
Built-in air quantity regulating valve Download PDFInfo
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- CN210318683U CN210318683U CN201921194773.2U CN201921194773U CN210318683U CN 210318683 U CN210318683 U CN 210318683U CN 201921194773 U CN201921194773 U CN 201921194773U CN 210318683 U CN210318683 U CN 210318683U
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- 230000001105 regulatory effect Effects 0.000 title claims description 10
- 230000007306 turnover Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000004519 grease Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
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Abstract
The utility model provides a built-in tolerance governing valve, it includes recess (1), is equipped with business turn over gas port (1 a) on recess (1), is equipped with base (2) in recess (1) one side, is equipped with on base (2) and corresponds complex through-hole (2 a) with recess (1), is equipped with piston (3) in through-hole (2 a), the one end of piston (3) stretches out through-hole (2 a) and corresponds the cooperation with suction valve (4) of below. The utility model discloses simple structure, convenient to use, because this device is equipped with in the cylinder for the whole appearance of cylinder is reasonable compact.
Description
The technical field is as follows:
the utility model belongs to the technical field of reciprocating piston compressor technique and specifically relates to just a built-in tolerance governing valve for reciprocating piston gas compressor.
Background art:
the reciprocating piston type compressor can adjust air flow by changing the rotating speed of the compressor, adjusting the communication between suction and extrusion and adjusting a pressure-opening suction valve.
The first method is to adjust the air quantity by changing the rotating speed of the compressor, and an alternating current motor with continuously adjustable rotating speed is needed, so the air quantity adjusting method is expensive and only used in special occasions.
The second way is to regulate the amount of gas by communicating the compressor discharge with the suction, which, although simple and feasible, is quite power consuming.
The third way is to arrange a corresponding air volume adjusting mechanism on the suction valve assembly of the compressor cylinder, namely, the air volume is adjusted by pressing open the suction valve.
The air quantity regulating valves for pressing open the air suction valves in the current market are various in types, such as piston type, diaphragm type and manual type. However, the installation modes of the air quantity regulating valve are all installed outside the cylinder body, so that the occupied space is large, and the volume of the reciprocating piston type compressor is increased, so that the air quantity regulating valve is easy to scratch and damage.
The utility model has the following contents:
from the utility model discloses just in order to overcome not enough among the prior art, provide a built-in tolerance governing valve.
The application provides the following technical scheme:
the built-in air quantity regulating valve is characterized in that: the air cylinder comprises a groove arranged on the inner wall of the air cylinder, an air inlet and an air outlet arranged on the groove, a base arranged on one side of the groove, a through hole correspondingly matched with the groove and arranged on the base, and a piston arranged in the through hole, wherein one end of the piston extends out of the through hole and is correspondingly matched with an air suction valve below the through hole.
On the basis of the technical scheme, the following further technical scheme can be provided:
and a check ring correspondingly matched with the base is sleeved at the lower end of the piston.
And the piston is also provided with a rubber ring correspondingly matched with the through hole.
Utility model advantage:
the utility model has the advantages of simple structure, convenient to use, because this device is equipped with in the cylinder for the whole appearance of cylinder is reasonable compact more, has avoided external tolerance governing valve to take place the problem of scraping easily among the prior art, has improved the life of whole cylinder, has reduced the cost of maintaining.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is an enlarged view of a in fig. 1.
The specific implementation mode is as follows:
as shown in figures 1 and 2, the built-in air quantity regulating valve comprises a circular groove 1 with an opening direction arranged on the inner wall 5 of a cylinder above an air suction valve 4 in the cylinder, an air inlet and outlet 1a of instrument air arranged at the center of the bottom of the groove 1, and a hose 1b communicated with the air outlet 1a, so that the instrument air is introduced into the groove 1 through the hose 1b or the instrument air in the groove 1 is discharged out of the groove 1.
A base 2 is arranged, a through hole 2a penetrating through the upper end face and the lower end face of the base 2 is arranged on the base 2, and an annular sealing gasket 6 is arranged between the upper end face of the base 2 and the top end of the groove wall of the groove 1. Bolts 7 penetrate through the base 2 on two sides of the through hole 2a, and one end of each bolt 7 penetrates through the corresponding mounting hole in the sealing gasket 6 and then is screwed into the screw hole in the top end of the groove wall of the groove 1, so that the base 2 is connected with the groove wall of the groove 1.
The through hole 2a is provided with a piston 3, the outer wall of the piston 3 is in sliding fit with the hole wall of the through hole 2a, and the lower end part of the piston 3 extends out of the through hole 2a and corresponds to a pressure valve fork 4a at the top end of an air suction valve 4 positioned below the base 2.
Be equipped with lower part annular 3c on the lower tip of piston 3, the cover is equipped with retaining ring 8 on the annular, the diameter of retaining ring 8 is greater than piston 3's diameter, and this makes retaining ring 8 and base 2's lower terminal surface form spacing cooperation.
The middle part of the piston 3 positioned in the through hole 2a is provided with a middle ring groove, and the middle ring groove is internally sleeved with a ring-shaped cross section which corresponds to the hole wall of the through hole 2a to form a corresponding fit, so as to play a role of sealing. Because the cross-section of middle part annular is the rectangle and the cross section of rubber ring 3a is circular, consequently all pack vacuum silicone grease 9 in the middle part inslot before installation rubber ring 3a with afterwards, pack the clearance between rubber ring 3a circular arc portion and the middle part annular groove wall through vacuum silicone grease 9, also play certain sealed effect when also providing lubrication for rubber ring 3a simultaneously.
The groove 1, the through hole 2a, the piston 3, the rubber ring 3a, the retainer ring 8 and the pressure valve fork 4a are coaxially distributed. The groove 1 is communicated with the through hole 2a, the diameter of the groove 1 is larger than that of the through hole 2a, and the diameter of the groove 1 is larger, so that the space in the groove is large, and the impact of instrument wind entering the groove 1 can be effectively buffered.
The working principle is as follows:
when 0.4-0.7 Mpa gas (or compressor compression medium) enters the groove from the air inlet and outlet as instrument wind, the instrument wind pushes the piston in the through hole to move downwards, the lower end part of the piston outside the through hole downwards extrudes the pressure valve fork of the air suction valve, the pressure valve fork presses downwards so as to press open the valve plate 4b of the air suction valve, the compressor runs in no-load mode, air quantity adjustment is achieved, and at the moment, the reset spring 4c below the pressure valve fork is in a pressed, contracted and converted state.
When the tolerance regulation is accomplished, instrument wind is discharged from the air inlet, and the gaseous pressure release in the recess, and the piston loses the holding down force, and at this moment the rebound of the reset spring 4c of inspiratory valve 4 upwards stands up and presses the valve fork, presses the valve fork and upwards pushes away the piston again, will form spacing cooperation with the lower terminal surface of base 2 by retaining ring 8 on the lower tip of piston, and the tolerance control valve reconversion accomplishes a tolerance regulation.
Claims (3)
1. The built-in air quantity regulating valve is characterized in that: the air cylinder comprises a groove (1) arranged on an inner wall (5) of the air cylinder, an air inlet and an air outlet (1 a) arranged on the groove (1), a base (2) arranged on one side of the groove (1), a through hole (2 a) corresponding to and matched with the groove (1) and arranged on the base (2), a piston (3) arranged in the through hole (2 a), and an air suction valve (4) extending out of the through hole (2 a) and arranged below the piston (3) in a corresponding matching mode.
2. The built-in air quantity regulating valve according to claim 1, characterized in that: the lower end of the piston (3) is sleeved with a check ring (8) correspondingly matched with the base (2).
3. The built-in air quantity regulating valve according to claim 1, characterized in that: and a rubber ring (3 a) correspondingly matched with the through hole (2 a) is also arranged on the piston (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921194773.2U CN210318683U (en) | 2019-07-27 | 2019-07-27 | Built-in air quantity regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921194773.2U CN210318683U (en) | 2019-07-27 | 2019-07-27 | Built-in air quantity regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210318683U true CN210318683U (en) | 2020-04-14 |
Family
ID=70126296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921194773.2U Active CN210318683U (en) | 2019-07-27 | 2019-07-27 | Built-in air quantity regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210318683U (en) |
-
2019
- 2019-07-27 CN CN201921194773.2U patent/CN210318683U/en active Active
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