CN112664691B - Multi-station pressure reducing valve special for air compressor - Google Patents
Multi-station pressure reducing valve special for air compressor Download PDFInfo
- Publication number
- CN112664691B CN112664691B CN202011582673.4A CN202011582673A CN112664691B CN 112664691 B CN112664691 B CN 112664691B CN 202011582673 A CN202011582673 A CN 202011582673A CN 112664691 B CN112664691 B CN 112664691B
- Authority
- CN
- China
- Prior art keywords
- piston
- air compressor
- assembly space
- connecting part
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Compressor (AREA)
Abstract
The invention discloses a multi-station pressure reducing valve special for an air compressor, which comprises a valve body, a seat body, an intermediate connector, a piston and a pre-tightening piece, wherein one end of the intermediate connector is an input end for connecting an output end of the air compressor, the other end of the intermediate connector is provided with an assembly space, one end of the piston is arranged in the assembly space in a floating manner, the other end of the piston is connected with the input end of the valve body, the input end of the valve body is communicated with the output end of the air compressor through the piston and the intermediate connector, the seat body is sleeved on the outer sides of the intermediate connector and the piston, an offset gap is formed between the seat body and the piston, so that the piston can obtain a position offset along the radial direction of the piston in the gap, and the pre-tightening piece is propped between the assembly space and the piston, so that the piston always has a reset trend.
Description
Technical Field
The invention relates to the technical field of air compressors, in particular to a multi-station pressure reducing valve special for an air compressor.
Background
An air compressor, namely an air compressor, is a device for compressing air, which is a device for converting motive mechanical energy into air pressure energy, is widely applied in various fields, a pressure reducing valve, also called a control valve, is usually installed at the output end of an air storage tank of the air compressor, the principle of a pressure regulating valve of a compressed air system is approximately the same, the pressure reducing valve can also be called a pressure regulating valve or a constant pressure valve, the principle of pressure reducing and constant pressure is that a high-pressure medium is filled into a relatively large cavity through a small hole to realize pressure reduction, in fact, the pressure reduction is realized by means of a interception area, the artificial set pressure in a valve controls an adjusting screw through a diaphragm, and the adjusting screw controls the size of a through passage of an air flow hole, so that the pressure in an outlet cavity is always equal to the pressure as long as a fixed pressure is provided, and the given pressure can be considered to be provided by a spring, an air source or a hydraulic source, and the setting is adjusted by the adjusting screw.
The output at the air compressor machine is connected to current relief pressure valve input adoption mode that directly links, when the vibrations that appear in the use are conducted to the link of relief pressure valve and air compressor machine, arouses connection structure's damage easily, for example: the output structure of the air compressor or the input structure of the pressure reducing valve can not effectively counteract stress concentration caused by vibration, so that the breakage and the like occur, and the service life of the device is reduced.
Disclosure of Invention
The invention aims to provide a multi-station pressure reducing valve special for an air compressor, which aims at overcoming the defects and shortcomings of the prior art and prolonging the service life.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention discloses a special multi-station pressure reducing valve for an air compressor, which comprises a valve body, a seat body, an intermediate connector, a piston and a pre-tightening piece, wherein one end of the intermediate connector is an input end and is used for being connected with an output end of the air compressor, the other end of the intermediate connector is provided with an assembly space, one end of the piston is arranged in the assembly space in a floating mode, the other end of the piston is connected with the input end of the valve body, the input end of the valve body is communicated with the output end of the air compressor through the piston and the intermediate connector, the seat body is sleeved on the outer sides of the intermediate connector and the piston, an offset gap is formed between the seat body and the piston, so that the piston can obtain a position offset along the radial direction of the piston in the gap, and the pre-tightening piece is propped between the assembly space and the piston, so that the piston always has a reset trend.
After adopting above structure, the special multistation relief pressure valve of air compressor machine of the invention, compared with prior art, have following advantage: an intermediate connector with an assembly space is arranged, one end of the intermediate connector is connected with the output end of the air compressor, one end of the piston is connected in the assembly space in a floating way, the other end is connected with the valve body, a pre-tightening piece is arranged between the piston and the assembly space, and the piston and the middle connector are used for conducting the output end of the air compressor and the input end of the valve body;
under the normal state, the pre-tightening force of the pre-tightening piece drives the piston to keep an initial position state, and the piston does not deviate in the initial position state; when the piston is connected with the valve body side or the air compressor side and overcomes the pre-tightening force of the pre-tightening piece, the piston deflects along the radial direction to offset the stress, so that the valve body or the connecting structure of the air compressor is prevented from being damaged due to vibration when the valve body is directly connected with the output end of the air compressor, and the service life is prolonged; in addition, the pre-tightening piece drives the piston to always have the trend of keeping the initial position state, so that output fluctuation of the air compressor caused by the change of an air path is reduced, the reliability of the device is improved, meanwhile, the problem that the tightness is reduced due to structural abrasion caused by the fact that the piston is in a long-term offset state is avoided, and the service life is further prolonged.
As an improvement of the invention, the seat body, the middle connector and the piston are respectively of hollow structures, the piston comprises a first connecting part and a second connecting part, the first connecting part is arranged in the assembly space in a matching way, and the second connecting part is arranged on the inner side of the seat body in a matching way. The improvement has the characteristics of reasonable structural layout and improved connection stability.
As an improvement of the invention, a first sealing groove is arranged on the inner side of the intermediate connecting body between the assembly space and the first connecting part, a first sealing ring is connected in the first sealing groove, and the first sealing ring is hooped at the end part of the first connecting part and used for sealing between the outer side of the piston and the inner side of the intermediate connecting body. The first sealing ring is arranged for sealing between the outer side of the piston and the middle connector, so that on one hand, the air path is high in tightness, and the energy loss is reduced; on the other hand, the phenomenon that the pretension piece cannot work normally due to pressure change caused by gas rushing into an assembly space is avoided, so that the pretension piece has high reliability and the service life is prolonged.
As an improvement of the invention, the diameter of the first sealing groove is larger than that of the first sealing ring, so that the first sealing ring is connected in the first sealing groove in a floating mode. According to the improvement, when the piston is deviated, the first sealing ring can deviate along the radial direction in the first sealing groove along with the piston, so that the phenomenon that gaps exist between the first sealing rings due to the deviation of the piston is avoided, the state of good sealing performance is ensured, and the influence on the use of the device is avoided.
As an improvement of the invention, the intermediate connector is screwed with the seat body. Above-mentioned improvement makes intermediate junction body and pedestal detachable connection, and the staff can be after dismantling maintain or change inside part, has the characteristics that maintain simple maintenance degree of difficulty is low, adopts the mode of spiro union in addition, has the characteristics of being convenient for dismouting.
As an improvement of the invention, the left side of the seat body is provided with a step hole communicated with the assembly space, a retaining shoulder is formed between the first connecting part and the second connecting part, a cushion block is propped against one end of the retaining shoulder and the right side opening end of the step hole, the other end of the retaining shoulder is propped against one end of the pre-tightening piece, and the cushion block is made of soft material. The retaining shoulder and the step hole are arranged, the cushion block is propped between one end of the retaining shoulder and the right opening end of the step hole, and the cushion block is made of soft materials, so that abrasion caused by contact between the piston and the inner wall of the seat body is effectively avoided, and the movable cushion block has the effect of reducing offset resistance.
As an improvement of the invention, a step part matched with the step hole is formed on the second connecting part at the left side of the retaining shoulder, the diameter of the step hole is larger than that of the step part, and the length of the step hole is larger than that of the step part. The structure is improved, so that the piston can radially deviate, and the reliability of the device is improved.
As an improvement of the present invention, an inner annular flange is formed on the left side of the stepped hole, the inner annular flange being located on the second connecting portion side, and a minimum diameter of the inner annular flange being larger than a maximum diameter of the second connecting portion. The improved structure also enables the piston to generate offset, thereby further improving the reliability of the device.
As an improvement of the invention, a second sealing groove is arranged at the left side of the inner annular flange, a second sealing ring made of soft material is arranged in the second sealing groove, and the second sealing ring is hooped on the second connecting part. The second sealing groove is arranged, and the second sealing ring in the second sealing groove improves the tightness between the step hole and the second connecting part, so that the entering of external sundries is effectively avoided, the device is reliable in operation, and the service life is prolonged.
As an improvement of the invention, the base body at the left side of the second sealing groove is in threaded connection with the end cover for the second connecting part to pass through, a gasket is propped between the end cover and the second sealing ring arranged in the second sealing groove, and the minimum diameters of the end cover and the gasket are larger than the maximum diameter of the second connecting part. The end cover is screwed on the base body, so that a worker can conveniently disassemble and assemble to replace or maintain the gasket and the second sealing ring, the gasket can keep the position of the second sealing ring, and the tightness and the reliability are improved; the design of the end cap and the gasket with a minimum diameter that is greater than the maximum diameter of the second connection also enables the piston to deflect.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the connecting members of the pressure reducing valve of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention;
FIG. 4 is a schematic view of the piston of the present invention when offset occurs;
FIG. 5 is an enlarged schematic view of the structure of FIG. 1A according to the present invention;
fig. 6 is an enlarged schematic view of the structure of fig. 1B according to the present invention.
In the figure:
1. a valve body; 2. a base; 21. a step hole; 22. an inner annular flange; 23. a second seal groove; 231. a second seal ring; 3. an intermediate connector; 31. an input end; 32. a first seal groove; 321. a first seal ring; 4. a piston; 41. a first connection portion; 42. a second connecting portion; 421. a step portion; 43. a shoulder; 431. a cushion block; 5. a pretension member; 6. an end cap; 61. a gasket.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 6, the multi-station pressure reducing valve special for the air compressor according to the invention comprises a valve body 1, a base body 2, an intermediate connecting body 3, a piston 4 and a pre-tightening piece 5, wherein one end of the intermediate connecting body 3 is an input end 31 for connecting an output end of the air compressor, the other end of the intermediate connecting body is provided with an assembling space, one end of the piston 4 is arranged in the assembling space in a floating manner, the other end of the piston 4 is connected with the input end 31 of the valve body 1, the input end 31 of the valve body 1 is communicated with the output end of the air compressor through the piston 4 and the intermediate connecting body 3, the base body 2 is sleeved on the outer sides of the intermediate connecting body 3 and the piston 4, an offset gap is formed between the base body 2 and the piston 4, so that the piston 4 can obtain a position offset along the radial direction of the piston 4, and the pre-tightening piece 5 is propped between the assembling space and the piston 4, so that the piston 4 always has a reset trend.
After adopting above structure, the special multistation relief pressure valve of air compressor machine of the invention, compared with prior art, have following advantage: an intermediate connector 3 with an assembly space is arranged, one end of the intermediate connector 3 is connected with the output end of the air compressor, one end of a piston 4 is connected in the assembly space in a floating manner, the other end of the piston 4 is connected with the valve body 1, a pre-tightening piece 5 is arranged between the piston 4 and the assembly space, and the piston 4 and the intermediate connector are used for conducting the output end of the air compressor and the input end 31 of the valve body 1;
in the normal state, the pre-tightening force of the pre-tightening piece 5 drives the piston 4 to keep an initial position state, and the piston 4 does not deviate in the initial position state; when the piston 4 is connected with the valve body 1 side or the air compressor side and overcomes the pre-tightening force of the pre-tightening piece 5, the piston 4 deflects along the radial direction to offset the stress, so that the damage to the connecting structure of the valve body 1 or the air compressor caused by vibration when the valve body 1 is directly connected with the output end of the air compressor is effectively avoided, and the service life is prolonged; in addition, the pre-tightening piece 5 drives the piston 4 to always have the trend of keeping the initial position state, so that output fluctuation of the air compressor caused by change of an air path is reduced, the reliability of the device is improved, and meanwhile, the problem that the tightness is reduced due to structural abrasion caused by the fact that the piston 4 is in a long-term offset state is avoided, and the service life is further prolonged.
As an improvement of the present invention, the base 2, the intermediate connector 3 and the piston 4 are hollow structures, respectively, the piston 4 includes a first connecting portion 41 and a second connecting portion 42, the first connecting portion 41 is cooperatively disposed in the assembly space, and the second connecting portion 42 is cooperatively disposed inside the base 2. The improvement has the characteristics of reasonable structural layout and improved connection stability.
As an improvement of the invention, a first sealing groove 32 is formed inside the intermediate connector 3 between the assembly space and the first connecting portion 41, a first sealing ring 321 is connected in the first sealing groove 32, and the first sealing ring 321 is hooped at the end of the first connecting portion 41 for sealing between the outer side of the piston 4 and the inner side of the intermediate connector 3. The first sealing ring 321 is arranged for sealing between the outer side of the piston 4 and the middle connector 3, so that on one hand, the air path is high in tightness, and the energy loss is reduced; on the other hand, the phenomenon that the pretension piece 5 cannot work normally due to pressure change caused by gas rushing into an assembly space is avoided, so that the pretension piece 5 has high reliability and the service life is prolonged.
As an improvement of the present invention, the diameter of the sealing groove is larger than that of the first sealing ring 321, so that the first sealing ring 321 is connected in the first sealing groove 32 in a floating manner. According to the improvement, when the piston 4 deflects, the first sealing ring 321 can deflect along the radial direction in the first sealing groove 32 along with the piston 4, so that the gap between the first sealing rings 321 caused by the deflection of the piston 4 is avoided, the state of good sealing performance is ensured, and the influence on the use of the device is avoided.
As an improvement of the invention, the intermediate connector 3 is screwed with the base 2. Above-mentioned improvement makes intermediate connector 3 and pedestal 2 detachable connection, and the staff can be after dismantling maintain or change inside part, has the characteristics that the maintenance is simple, the maintenance degree of difficulty is low, adopts the mode of spiro union in addition, has the characteristics of being convenient for dismouting.
As an improvement of the present invention, the left side of the seat 2 is provided with a stepped hole 21 communicating with the assembly space, a shoulder 43 is formed between the first connecting portion 41 and the second connecting portion 42, a spacer 431 is disposed between one end of the shoulder 43 and the right open end of the stepped hole 21, the other end of the shoulder 43 abuts against one end of the pretensioner 5, and the spacer 431 is a soft spacer 431. The retaining shoulder 43 and the step hole 21 are arranged, the cushion block 431 is propped between one end of the retaining shoulder 43 and the right opening end of the step hole 21, the cushion block 431 is made of soft cushion block 431, abrasion caused by contact between the piston 4 and the inner wall of the seat body 2 is effectively avoided, and the movable cushion block 431 has the function of reducing offset resistance.
As an improvement of the present invention, a step portion 421 is formed on the second connecting portion 42 on the left side of the shoulder 43 to be engaged with the step hole 21, the diameter of the step hole 21 is larger than the diameter of the step portion 421, and the length of the step hole 21 is larger than the length of the step portion 421. The above structural improvement enables the piston 4 to radially deviate, thereby improving the reliability of the device.
As an improvement of the present invention, an inner annular flange 22 is formed on the left side of the stepped hole 21, the inner annular flange 22 is located on the second connecting portion 42 side, and the minimum diameter of the inner annular flange 22 is larger than the maximum diameter of the second connecting portion 42. The above structural improvement also enables the piston 4 to generate deflection, thereby further improving the reliability of the device.
As an improvement of the present invention, a second sealing groove 23 is provided on the left side of the inner annular flange 22, a second sealing ring 231 made of soft material is provided in the second sealing groove 23, and the second sealing ring 231 is hooped on the second connecting portion 42. The second sealing groove 23 is arranged, and the second sealing ring 231 in the second sealing groove 23 improves the tightness between the step hole 21 and the second connecting part 42, so that the entering of external sundries is effectively avoided, the device is reliable in operation, and the service life is prolonged.
As an improvement of the present invention, the base 2 on the left side of the second seal groove 23 is screwed with an end cover 6 through which the second connecting portion 42 passes, a gasket 61 is abutted between the end cover 6 and a second seal ring 231 disposed in the second seal groove 23, and the minimum diameters of the end cover 6 and the gasket 61 are larger than the maximum diameter of the second connecting portion 42. The end cover 6 is screwed on the seat body 2, so that a worker can conveniently disassemble and assemble to replace or maintain the gasket 61 and the second sealing ring 231, the gasket 61 can keep the position of the second sealing ring 231, and the tightness and reliability are improved; the structural design in which the smallest diameter of the end cap 6 and the spacer 61 is larger than the largest diameter of the second connecting portion 42 also enables the piston 4 to be deflected. .
The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are therefore intended to be embraced therein.
Claims (4)
1. Special multistation relief pressure valve of air compressor machine, its characterized in that: the novel air compressor comprises a valve body (1), a seat body (2), an intermediate connecting body (3), a piston (4) and a pre-tightening piece (5), wherein one end of the intermediate connecting body (3) is an input end (31) and is used for being connected with an output end of an air compressor, the other end of the intermediate connecting body is provided with an assembly space, one end of the piston (4) is arranged in the assembly space in a floating mode, the other end of the piston is connected with an input joint of the valve body (1), the input joint of the valve body (1) is communicated with the output end of the air compressor through the piston (4) and the intermediate connecting body (3), the seat body (2) is sleeved on the outer sides of the intermediate connecting body (3) and the piston (4), an offset gap is formed between the seat body (2) and the piston (4), so that the piston (4) can obtain a position which is offset along the radial direction of the piston (4), and the pre-tightening piece (5) is propped between the assembly space and the piston (4) to enable the piston (4) to always have a reset trend.
The seat body (2), the middle connecting body (3) and the piston (4) are respectively of hollow structures, the piston (4) comprises a first connecting part (41) and a second connecting part (42), the first connecting part (41) is matched and arranged in an assembly space, and the second connecting part (42) is matched and arranged at the inner side of the seat body (2);
a first sealing groove (32) is formed in the inner side of the middle connecting body (3) between the assembly space and the first connecting part (41), a first sealing ring (321) is connected in the first sealing groove (32), and the first sealing ring (321) is hooped at the end part of the first connecting part (41) and used for sealing between the outer side of the piston (4) and the inner side of the middle connecting body (3);
the diameter of the first sealing groove (32) is larger than that of the first sealing ring (321), so that the first sealing ring (321) is connected in the first sealing groove (32) in a floating mode;
a step hole (21) communicated with the assembly space is formed in the left side of the base body (2), a blocking shoulder (43) is formed between the first connecting part (41) and the second connecting part (42), a step part (421) matched with the step hole (21) is formed on the second connecting part (42) in the left side of the blocking shoulder (43), the diameter of the step hole (21) is larger than that of the step part (421), and the length of the step hole (21) is larger than that of the step part (421);
an inner annular flange (22) is formed on the left side of the step hole (21), the inner annular flange (22) is positioned on the second connecting portion (42) side, and the minimum diameter of the inner annular flange (22) is larger than the maximum diameter of the second connecting portion (42);
the left side of interior annular flange (22) is provided with second seal groove (23), spiro union has end cover (6) that supplies second connecting portion (42) to pass on pedestal (2) of second seal groove (23) left side, support between end cover (6) and second sealing washer (231) that set up in second seal groove (23) and be equipped with gasket (61), and the minimum diameter of end cover (6) and gasket (61) all is greater than the maximum diameter of second connecting portion (42).
2. The multi-station pressure reducing valve special for an air compressor according to claim 1, wherein: the middle connector (3) is in threaded connection with the base body (2).
3. The multi-station pressure reducing valve special for an air compressor according to claim 1, wherein: a cushion block (431) is abutted between one end of the shoulder (43) and the right opening end of the step hole (21), and the cushion block (431) is a soft cushion block (431).
4. The multi-station pressure reducing valve special for an air compressor according to claim 1, wherein: a second sealing ring (231) made of soft materials is arranged in the second sealing groove (23), and the second sealing ring (231) is hooped on the second connecting part (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011582673.4A CN112664691B (en) | 2020-12-28 | 2020-12-28 | Multi-station pressure reducing valve special for air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011582673.4A CN112664691B (en) | 2020-12-28 | 2020-12-28 | Multi-station pressure reducing valve special for air compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112664691A CN112664691A (en) | 2021-04-16 |
| CN112664691B true CN112664691B (en) | 2023-05-16 |
Family
ID=75411174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011582673.4A Active CN112664691B (en) | 2020-12-28 | 2020-12-28 | Multi-station pressure reducing valve special for air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112664691B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1238429A (en) * | 1998-06-04 | 1999-12-15 | 法斯泰斯特公司 | High pressure coupling |
| US6520205B1 (en) * | 2000-08-22 | 2003-02-18 | Ingersoll-Rand Company | Compressor unloader system |
| EP1876381A1 (en) * | 2006-07-05 | 2008-01-09 | Special Couplings S.r.l. | Quick coupling for threaded fittings |
| CN201696768U (en) * | 2010-04-16 | 2011-01-05 | 泉州市玉杰旋转接头金属软管有限公司 | Rotary connector taking high temperature heat-conducting oil as medium |
| CN102762908A (en) * | 2009-12-18 | 2012-10-31 | 伊顿公司 | Compliant conduit conductor |
| CN206582095U (en) * | 2017-03-31 | 2017-10-24 | 北京市中超混凝土有限责任公司 | Noise reduction damping device for air compressor machine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB737198A (en) * | 1953-02-27 | 1955-09-21 | Dunlop Rubber Co | Pressure reducing valve |
| US4321940A (en) * | 1981-01-19 | 1982-03-30 | Control Devices, Incorporated | Unloader/check valve |
| CN2081465U (en) * | 1990-11-20 | 1991-07-24 | 核工业西南物理研究院 | Windward side topping outer adjusting straight automatic voltage-stabilizing by-pass valve |
| CN205618753U (en) * | 2016-05-12 | 2016-10-05 | 温岭市创亿气动工具有限公司 | Air compressor machine air -vent valve |
| CN106958686B (en) * | 2017-05-16 | 2023-04-07 | 眉山中车制动科技股份有限公司 | Pneumatic control exhaust valve |
| CN208311608U (en) * | 2017-12-22 | 2019-01-01 | 宁波杰克龙精工有限公司 | A kind of axial-flow type pressure reducing valve |
| CN209638401U (en) * | 2019-01-30 | 2019-11-15 | 浙江达威电子股份有限公司 | Discharging valve |
| CN209740589U (en) * | 2019-04-01 | 2019-12-06 | 宁波赛维思机械有限公司 | Hollow double-acting oil jack |
| CN211259779U (en) * | 2019-11-14 | 2020-08-14 | 温州市润新机械制造有限公司 | Piston type pressure reducing valve with direct flow channel |
| CN111219513A (en) * | 2020-01-20 | 2020-06-02 | 北京航安特机电技术有限公司 | One-level axial flow pressure reducing valve |
-
2020
- 2020-12-28 CN CN202011582673.4A patent/CN112664691B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1238429A (en) * | 1998-06-04 | 1999-12-15 | 法斯泰斯特公司 | High pressure coupling |
| US6520205B1 (en) * | 2000-08-22 | 2003-02-18 | Ingersoll-Rand Company | Compressor unloader system |
| EP1876381A1 (en) * | 2006-07-05 | 2008-01-09 | Special Couplings S.r.l. | Quick coupling for threaded fittings |
| CN102762908A (en) * | 2009-12-18 | 2012-10-31 | 伊顿公司 | Compliant conduit conductor |
| CN201696768U (en) * | 2010-04-16 | 2011-01-05 | 泉州市玉杰旋转接头金属软管有限公司 | Rotary connector taking high temperature heat-conducting oil as medium |
| CN206582095U (en) * | 2017-03-31 | 2017-10-24 | 北京市中超混凝土有限责任公司 | Noise reduction damping device for air compressor machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112664691A (en) | 2021-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101749465A (en) | Double-valve seat pressure-reducing valve | |
| CN113915035A (en) | High pressure fuel injection pump is with inlet valve mounting structure | |
| CN112664691B (en) | Multi-station pressure reducing valve special for air compressor | |
| CN114215946B (en) | Axial-flow type dynamic self-balancing regulating valve | |
| KR102406046B1 (en) | High-pressure valve | |
| CN211039697U (en) | Pneumatic angle seat valve | |
| CN210461828U (en) | Flow differential pressure setting valve | |
| CN114263770B (en) | Single spring high pressure reducer suitable for hydrogen energy handheld torch | |
| CN113202969B (en) | Pneumatic pipe burst safety valve and method | |
| CN212718014U (en) | Gas pressure reducer | |
| CN110925344B (en) | Variable spring assembly | |
| CN112032384A (en) | Safety valve capable of automatically adjusting flow stability | |
| EP4133949A1 (en) | Check valve on sub-machine of soda fountain | |
| CN221097579U (en) | Novel check valve | |
| CN221300230U (en) | Two-stage system pressure reducing valve for high-pressure gas | |
| CN219933067U (en) | Axial flow type pressure flow regulating valve | |
| CN211398668U (en) | Check valve | |
| CN214662071U (en) | Floating adjustable valve seat structure for bidirectional large-diameter triple-eccentric butterfly valve | |
| CN217926173U (en) | Current stabilizer for reducing airflow pulsation | |
| CN221504124U (en) | Axial flow pressure regulator | |
| CN220910564U (en) | Pressure reducing valve and fuel cell vehicle | |
| CN219375798U (en) | Pressure reducing valve and medical equipment | |
| CN216479142U (en) | Intelligent digital electric ultrahigh pressure gas pressure reducing valve | |
| CN118775220A (en) | Differential cylinder of high-pressure gas injection compressor | |
| CN219588203U (en) | One-level pressure regulating structure of two-level pressure regulating gas pressure regulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20210416 Assignee: Ningbo Xinjiaxing Import and Export Co.,Ltd. Assignor: Ningbo New Jiaxing Automatic Industry Co.,Ltd. Contract record no.: X2023330000497 Denomination of invention: Special multi-station pressure reducing valve for air compressors Granted publication date: 20230516 License type: Common License Record date: 20230808 |
|
| EE01 | Entry into force of recordation of patent licensing contract |