CN111852866A - High-pressure inverse proportion valve for air compressor - Google Patents
High-pressure inverse proportion valve for air compressor Download PDFInfo
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- CN111852866A CN111852866A CN201911052896.7A CN201911052896A CN111852866A CN 111852866 A CN111852866 A CN 111852866A CN 201911052896 A CN201911052896 A CN 201911052896A CN 111852866 A CN111852866 A CN 111852866A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
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Abstract
The invention relates to a high-pressure inverse proportion valve for an air compressor, which comprises a valve body, wherein a valve cavity is arranged in the valve body, a vent hole and an air outlet hole which are communicated with the valve cavity are arranged on the valve body, an upper valve seat is arranged at the upper end of the valve body, a pressure regulating mechanism is arranged between the upper valve seat and the valve body, a pressure relief mechanism is arranged at the lower end of the valve body, a valve core is inserted in a valve hole in the center of the valve body, one end of the valve core is connected with the pressure regulating mechanism, and; the valve body is also provided with a throttling mechanism communicated with the valve cavity; the invention has the beneficial effects that: through setting up pressure release mechanism on the valve body, when the atmospheric pressure of air compressor machine risees because of reducing with tolerance, atmospheric pressure in the valve body can be higher this moment, can in time discharge too high atmospheric pressure through pressure release mechanism to can reach the balance between air compressor machine air input and the system with tolerance fast and accurately, and still be provided with throttle mechanism on the valve body, through this throttle mechanism, it is more even to enable output pressure to discharge, and it is convenient, quick to adjust moreover.
Description
Technical Field
The invention belongs to the technical field of air compressor accessories, and particularly relates to a high-pressure inverse proportion valve for an air compressor.
Background
The inverse proportion valve is an important component element of the screw type air compressor, and the use principle of the inverse proportion valve in the screw type air compressor is as follows: the inverse proportion valve is matched with the butterfly type air inlet control valve for use, when the air pressure of the air compressor rises due to the reduction of air consumption and reaches the pressure set by the inverse proportion valve, the inverse proportion valve acts and reduces the output quantity of control air, the thrust of a servo cylinder valve rod of an air inlet valve of the air compressor is reduced, the valve rod retracts under the action of spring force, when the spring force is balanced with the gas thrust of the cylinder, the valve rod is in a half-open state, and the air intake quantity of the air compressor is reduced to be balanced with the air consumption of a system. For example: the structure of a throttling component in the inverse proportional valve disclosed in the patent No. 201620647834.6 can only be applied to an air compressor with a lower pressure level to ensure the precision of output pressure, but in an air compressor with a higher pressure level, the precision of the output pressure is difficult to ensure, effective and uniform discharge cannot be obtained, the service life of the whole inverse proportional valve is influenced in the long term, and the working performance is not good; when the air pressure of the air compressor is increased due to the reduction of air consumption, the pressure in the valve body is increased instantaneously and the discharge is slow.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the high-pressure inverse proportion valve for the air compressor, which has the advantages of simple structure and good performance and can always keep the pressure in the valve body uniform.
The high-pressure inverse proportion valve for the air compressor comprises a valve body, wherein a valve cavity is arranged in the valve body, a vent hole and an air outlet hole which are communicated with the valve cavity are formed in the valve body, an upper valve seat is installed at the upper end of the valve body, a pressure regulating mechanism is arranged between the upper valve seat and the valve body, a pressure relief mechanism is arranged at the lower end of the valve body, a valve core is inserted into a valve hole in the center of the valve body, one end of the valve core is connected with the pressure regulating mechanism, and the other end of the valve core abuts against the pressure relief mechanism; the valve body is also provided with a throttling mechanism communicated with the valve cavity.
Preferably, the pressure regulating mechanism comprises a diaphragm, a pressure plate, a limiting seat, a pressure regulating spring, an upper spring seat and a pressure regulating rod, the pressure regulating rod penetrates through the upper end of the upper valve seat, a pressure regulating nut is screwed at the upper end of the pressure regulating rod, the pressure regulating nut is fixed at the upper end of the upper valve seat, and the lower end of the pressure regulating rod is connected with the upper spring seat; the pressure plate is located above the diaphragm and fixed at the upper end of the valve core, the limiting seat is installed between the upper valve seat and the valve body, and two ends of the pressure regulating spring are respectively abutted to the pressure plate and the upper spring seat.
Preferably, the body of the diaphragm covers the upper end face of the valve cavity, and the periphery of the diaphragm is pressed between the upper valve seat and the valve body through a limiting seat.
Preferably, the upper spring seat is connected to the lower end of the pressure regulating rod in a threaded connection mode, and a first steel ball is mounted between the interior of the upper spring seat and the lower end face of the pressure regulating rod.
Preferably, the pressure relief mechanism comprises a base and a lower valve seat, a pressure relief hole is formed in the base and is installed at the lower end of the valve body, the lower valve seat is installed above the base, and the wall of a through hole formed in the lower valve seat abuts against the lower end face of the valve core.
Preferably, the valve body is provided with an orifice for installing a throttling mechanism, and the orifice is positioned on the valve cavity on the side of the pressure relief mechanism.
Preferably, the throttling mechanism comprises a steel ball seat, a second steel ball, an end cover and a spring, the steel ball seat is positioned at the bottom of the throttling hole, and the end cover is fixed on the throttling hole in a threaded connection mode and abuts against the steel ball seat; the second steel ball is located on the steel ball seat, a spring is installed in the end cover, one end of the spring abuts against the end cover, and the other end of the spring abuts against the second steel ball.
Preferably, a through hole is formed in the side wall of the upper valve seat.
The invention has the beneficial effects that: the pressure relief mechanism is arranged on the valve body, so that when the air pressure of the air compressor rises due to the reduction of air consumption, the air pressure in the valve body is higher, and the over-high air pressure can be discharged in time through the pressure relief mechanism, so that the balance between the air intake quantity of the air compressor and the air consumption of a system can be quickly and accurately achieved, and the throttle mechanism is also arranged on the valve body, so that the output pressure can be discharged more uniformly and is convenient and quick to adjust; has the advantages of simple structure, good performance and long service life.
Drawings
Fig. 1 is a schematic front sectional view of the present invention.
FIG. 2 is a schematic side sectional view of the present invention.
The reference numbers in the drawings are respectively: 1. a valve body; 2. an upper valve seat; 3. a pressure regulating mechanism; 4. a pressure relief mechanism; 5. a valve core; 6. a throttle mechanism; 7. a seal ring; 1-1, a valve cavity; 1-2, vent holes; 1-3, air outlet holes; 1-4, valve hole; 1-5, orifice; 2-1, through holes; 3-1, a membrane; 3-2, pressing a plate; 3-3, a limiting seat; 3-4, a pressure regulating spring; 3-5, an upper spring seat; 3-6, adjusting the pressure rod; 3-7, a pressure regulating nut; 3-8, a first steel ball; 4-1, a base; 4-2, a lower valve seat; 5-1, mounting seats; 6-1, a steel ball seat; 6-2, a second steel ball; 6-3, end cover; 6-4 and a spring.
Detailed Description
The invention will be described in detail below with reference to the following drawings: as shown in attached figures 1 and 2, the invention comprises a valve body 1, a valve cavity 1-1 is arranged in the valve body 1, a vent hole 1-2 and an air outlet hole 1-3 which are communicated with the valve cavity 1-1 are arranged on the valve body 1, and are positioned at two sides of the valve body 1; an upper valve seat 2 is installed at the upper end of a valve body 1, a pressure regulating mechanism 3 is arranged between the upper valve seat 2 and the valve body 1, a pressure relief mechanism 4 is arranged at the lower end of the valve body 1, a valve core 5 is inserted into a valve hole 1-4 in the center of the valve body 1, a sealing ring 7 is installed between the valve core 5 and the valve hole 1-4, one end of the valve core 5 is connected with the pressure regulating mechanism 3, and the other end of the valve core 5 is abutted against the pressure relief mechanism 4, so that when the air pressure of an air compressor is increased due to the reduction of air consumption through the movement between the valve core 5 and the pressure relief mechanism 4 and the pressure regulating mechanism 3, the air pressure in the valve body is higher at the moment, and the overhigh air pressure can be timely discharged through the pressure relief mechanism; the valve body 1 is also provided with a throttling mechanism 6 communicated with the valve cavity 1-1, and the output pressure can be discharged more uniformly and conveniently and quickly through the throttling mechanism.
In order to make the structural layout of the whole inverse proportional valve more compact and the installation convenience, the throttling mechanism 6 is positioned right in front of the valve body 1, the pressure regulating mechanism 3 is positioned right above the valve body 1, the pressure relief mechanism 4 is positioned right below the valve body 1, and the balance between the air intake of the air compressor and the air consumption of the system is adjusted between the pressure regulating mechanism 3 and the pressure relief mechanism 4 through the valve core 5.
The pressure regulating mechanism 3 comprises a diaphragm 3-1, a pressure plate 3-2, a limiting seat 3-3, a pressure regulating spring 3-4, an upper spring seat 3-5 and a pressure regulating rod 3-6, wherein the pressure regulating rod 3-6 is arranged at the upper end of the upper valve seat 2 in a penetrating manner, the upper end of the pressure regulating rod 3-6 is screwed with a pressure regulating nut 3-7, the pressure regulating nut 3-7 is fixed at the upper end of the upper valve seat 2, and the lower end of the pressure regulating rod 3-6 is connected with the upper spring seat 3-5; the pressure plate 3-2 is positioned above the diaphragm 3-1 and fixed at the upper end of the valve core 5, and the upper end of the valve core 5 is provided with threads and a mounting seat 5-1 which protrudes outwards in the radial direction, namely the upper end of the valve core 5 is screwed up by a nut, so that the pressure plate 3-2 and the diaphragm 3-1 are fixed between the nut and the mounting seat 5-1; the limiting seat 3-3 is arranged between the upper valve seat 2 and the valve body 1, and two ends of the pressure regulating spring 3-4 are respectively abutted against the pressure plate 3-2 and the upper spring seat 3-5; when the pressure of the inverse proportional valve is required to be set, the pressure can be adjusted only by clockwise and anticlockwise rotation of the pressure adjusting rods 3-6, and the pressure adjusting spring is compressed at the moment, so that the set pressure is increased; and the pressure regulating spring rebounds, so that the set pressure is reduced.
The body of the diaphragm 3-1 is covered on the upper end surface of the valve cavity 1-1, and the periphery of the diaphragm 3-1 is pressed between the upper valve seat 2 and the valve body 1 through the limiting seat 3-3; and a sealing ring 7 is arranged between the diaphragm 3-1 and the valve body 1. When the air pressure of the air compressor is increased due to the reduction of air consumption, the air pressure in the valve body is higher at the moment, so that the diaphragm 3-1 moves upwards, the valve core 5 is driven to move upwards, and when the air input of the air compressor and the air consumption of the system are balanced, the diaphragm is reset through the pressure regulating spring 3-4.
The upper spring seats 3-5 are connected to the lower ends of the pressure regulating rods 3-6 in a threaded connection mode, first steel balls 3-8 are installed between the inner portions of the upper spring seats 3-5 and the lower end faces of the pressure regulating rods 3-6, the upper spring seats 3-5 and the pressure regulating springs 3-4 are enabled to be more uniform in stress and more accurate in pressure setting through point contact among the first steel balls 3-8, the spring seats 3-5 and the lower end faces of the pressure regulating rods, and existing steel plates, namely the spring seats 3-5 and the lower end faces of the pressure regulating rods are in surface contact with the steel plates, so that the upper spring seats 3-5 and the pressure regulating springs 3-4 are not uniform in stress.
The pressure relief mechanism 4 comprises a base 4-1 and a lower valve seat 4-2, a pressure relief hole is arranged in the base 4-1 and is installed at the lower end of the valve body 1, a sealing ring 7 is installed between the base 4-1 and the lower end of the valve body 1, the lower valve seat 4-2 is installed above the base 4-1, and the wall of a through hole arranged on the lower valve seat 4-2 is abutted to the lower end face of the valve core 5; the upper plane of the lower valve seat 4-2 is higher than that of the base 4-1, so that the stroke of the valve core 5 can be reduced, and the lower valve seat 4-2 can be conveniently detached and installed. When the air pressure of the air compressor rises due to the reduction of air consumption, the air pressure in the valve body is higher at the moment, the diaphragm 3-1 moves upwards, the valve core 5 is driven to move upwards, the lower end face of the valve core 5 is far away from the wall of the through hole arranged on the lower valve seat 4-2, so that the air pressure flows out of the pressure relief hole, when the air input of the air compressor and the air consumption of the system are balanced, the valve core 5 moves downwards and offsets against the wall of the through hole arranged on the lower valve seat 4-2, and at the moment, the inverse proportion valve is in a normal state.
The valve body 1 is provided with a throttling hole 1-5 for installing a throttling mechanism 6, and the throttling hole 1-5 is positioned on the valve cavity 1-1 at the side of the pressure relief mechanism 4; the output pressure can be discharged more uniformly and stably, and the flow rate of the pressure relief mechanism 4 in the pressure relief process can be more uniform.
The throttling mechanism 6 comprises a steel ball seat 6-1, a second steel ball 6-2, an end cover 6-3 and a spring 6-4, wherein the steel ball seat 6-1 is positioned at the bottom of the throttling hole 1-5, a sealing ring 7 is arranged between the steel ball seat and the throttling hole 1-5, the end cover 6-3 is fixed on the throttling hole 1-5 in a threaded connection mode, and the sealing ring 7 is arranged between the steel ball seat and the throttling hole and is abutted against the steel ball seat 6-1; the second steel ball 6-2 is positioned on the steel ball seat 6-1, the spring 6-4 is arranged in the end cover 6-3, one end of the spring 6-4 is abutted against the end cover 6-3, the other end of the spring 6-4 is abutted against the second steel ball 6-2, and the second steel ball 6-2 can move back and forth in the steel ball seat 6-1 through the spring 6-4; when the air outlet 1-3 or the pressure relief hole discharges air pressure, the air pressure is discharged or relieved more uniformly and stably through the arrangement of the throttling mechanism, so that the service life of the inverse proportion valve is prolonged, and the performance of the inverse proportion valve is better.
The side wall of the upper valve seat 2 is provided with a through hole 2-1, and the through hole 2-1 can enable air in the upper valve seat 2 to be discharged from the through hole 2-1 in the upward movement process of the diaphragm, so that the performance of the inverse proportion valve can be improved.
The present invention is not limited to the above embodiments, and any changes in the shape or material composition, or any changes in the structural design provided by the present invention, are all modifications of the present invention, and should be considered to be within the scope of the present invention.
Claims (8)
1. The utility model provides a high-pressure anti-proportional valve for air compressor, includes valve body (1), be equipped with valve pocket (1-1) in valve body (1), be equipped with on valve body (1) with communicating air vent (1-2) of valve pocket (1-1), venthole (1-3), its characterized in that: an upper valve seat (2) is mounted at the upper end of the valve body (1), a pressure regulating mechanism (3) is arranged between the upper valve seat (2) and the valve body (1), a pressure relief mechanism (4) is arranged at the lower end of the valve body (1), a valve core (5) is inserted into a valve hole (1-4) in the center of the valve body (1), one end of the valve core (5) is connected with the pressure regulating mechanism (3), and the other end of the valve core is abutted against the pressure relief mechanism (4); the valve body (1) is also provided with a throttling mechanism (6) communicated with the valve cavity (1-1).
2. The high pressure anti-proportional valve for an air compressor of claim 1, wherein: the pressure regulating mechanism (3) comprises a membrane (3-1), a pressure plate (3-2), a limiting seat (3-3), a pressure regulating spring (3-4), an upper spring seat (3-5) and a pressure regulating rod (3-6), the pressure regulating rod (3-6) penetrates through the upper end of the upper valve seat (2), a pressure regulating nut (3-7) is screwed at the upper end of the pressure regulating rod (3-6), the pressure regulating nut (3-7) is fixed at the upper end of the upper valve seat (2), and the lower end of the pressure regulating rod (3-6) is connected with the upper spring seat (3-5); the pressure plate (3-2) is located above the diaphragm (3-1) and fixed at the upper end of the valve core (5), the limiting seat (3-3) is installed between the upper valve seat (2) and the valve body (1), and two ends of the pressure regulating spring (3-4) are respectively abutted to the pressure plate (3-2) and the upper spring seat (3-5).
3. The high pressure anti-proportional valve for an air compressor of claim 2, wherein: the body of the diaphragm (3-1) covers the upper end face of the valve cavity (1-1), and the periphery of the diaphragm (3-1) is pressed between the upper valve seat (2) and the valve body (1) through a limiting seat (3-3).
4. The high pressure anti-proportional valve for an air compressor of claim 2, wherein: the upper spring seat (3-5) is connected to the lower end of the pressure regulating rod (3-6) in a threaded connection mode, and a first steel ball (3-8) is arranged between the inner part of the upper spring seat (3-5) and the lower end face of the pressure regulating rod (3-6).
5. The high pressure anti-proportional valve for an air compressor of claim 1, wherein: the pressure relief mechanism (4) comprises a base (4-1) and a lower valve seat (4-2), a pressure relief hole is formed in the base (4-1) and is installed at the lower end of the valve body (1), the lower valve seat (4-2) is installed above the base (4-1), and the wall of a through hole formed in the lower valve seat (4-2) abuts against the lower end face of the valve core (5).
6. The high pressure anti-proportional valve for an air compressor of claim 1, wherein: and the valve body (1) is provided with a throttling hole (1-5) for installing a throttling mechanism (6), and the throttling hole (1-5) is positioned on the valve cavity (1-1) at the side of the pressure relief mechanism (4).
7. The high pressure anti-proportional valve for an air compressor of claim 6, wherein: the throttling mechanism (6) comprises a steel ball seat (6-1), a second steel ball (6-2), an end cover (6-3) and a spring (6-4), the steel ball seat (6-1) is positioned at the bottom of the throttling hole (1-5), and the end cover (6-3) is fixed on the throttling hole (1-5) in a threaded connection mode and is abutted against the steel ball seat (6-1); the second steel ball (6-2) is located on the steel ball seat (6-1), a spring (6-4) is installed in the end cover (6-3), one end of the spring (6-4) abuts against the end cover (6-3), and the other end of the spring abuts against the second steel ball (6-2).
8. The high pressure anti-proportional valve for an air compressor of claim 1, wherein: the side wall of the upper valve seat (2) is provided with a through hole (2-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911052896.7A CN111852866A (en) | 2019-10-31 | 2019-10-31 | High-pressure inverse proportion valve for air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911052896.7A CN111852866A (en) | 2019-10-31 | 2019-10-31 | High-pressure inverse proportion valve for air compressor |
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| Publication Number | Publication Date |
|---|---|
| CN111852866A true CN111852866A (en) | 2020-10-30 |
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ID=72970866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911052896.7A Pending CN111852866A (en) | 2019-10-31 | 2019-10-31 | High-pressure inverse proportion valve for air compressor |
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| Country | Link |
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| CN (1) | CN111852866A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116255321A (en) * | 2023-04-27 | 2023-06-13 | 度科工业科技(上海)有限公司 | Compact constant-current and steady-flow injection pump |
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| JP2002312038A (en) * | 2001-04-12 | 2002-10-25 | Taco Co Ltd | Diaphragm assembly |
| CN101852209A (en) * | 2010-06-08 | 2010-10-06 | 南通市红星空压机配件制造有限公司 | Energy-saving inverse proportion valve |
| CN201943956U (en) * | 2010-12-06 | 2011-08-24 | 上海伟旺自控机械有限公司 | Energy-saving inverse-proportional valve |
| CN104214383A (en) * | 2014-09-01 | 2014-12-17 | 浙江智杰阀业有限公司 | Self-operated pressure regulating valve with self-aligning spring seat |
| CN205823646U (en) * | 2016-06-23 | 2016-12-21 | 奉化意格特机械制造有限公司 | A kind of inlet capacity control valve for air for screw air compressor |
| CN206615207U (en) * | 2017-04-12 | 2017-11-07 | 重庆金华汽车制动器有限公司 | A kind of new automobile brake control valve |
| CN206802324U (en) * | 2017-04-28 | 2017-12-26 | 奉化意格特机械制造有限公司 | A kind of air compressor machine direct proportion valve |
| CN209324918U (en) * | 2018-10-23 | 2019-08-30 | 中国船舶重工集团公司第七0四研究所 | A kind of fluid pressure buffer unit |
| CN211116597U (en) * | 2019-10-31 | 2020-07-28 | 奉化意格特机械制造有限公司 | High-pressure inverse proportion valve for air compressor |
-
2019
- 2019-10-31 CN CN201911052896.7A patent/CN111852866A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002312038A (en) * | 2001-04-12 | 2002-10-25 | Taco Co Ltd | Diaphragm assembly |
| CN101852209A (en) * | 2010-06-08 | 2010-10-06 | 南通市红星空压机配件制造有限公司 | Energy-saving inverse proportion valve |
| CN201943956U (en) * | 2010-12-06 | 2011-08-24 | 上海伟旺自控机械有限公司 | Energy-saving inverse-proportional valve |
| CN104214383A (en) * | 2014-09-01 | 2014-12-17 | 浙江智杰阀业有限公司 | Self-operated pressure regulating valve with self-aligning spring seat |
| CN205823646U (en) * | 2016-06-23 | 2016-12-21 | 奉化意格特机械制造有限公司 | A kind of inlet capacity control valve for air for screw air compressor |
| CN206615207U (en) * | 2017-04-12 | 2017-11-07 | 重庆金华汽车制动器有限公司 | A kind of new automobile brake control valve |
| CN206802324U (en) * | 2017-04-28 | 2017-12-26 | 奉化意格特机械制造有限公司 | A kind of air compressor machine direct proportion valve |
| CN209324918U (en) * | 2018-10-23 | 2019-08-30 | 中国船舶重工集团公司第七0四研究所 | A kind of fluid pressure buffer unit |
| CN211116597U (en) * | 2019-10-31 | 2020-07-28 | 奉化意格特机械制造有限公司 | High-pressure inverse proportion valve for air compressor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116255321A (en) * | 2023-04-27 | 2023-06-13 | 度科工业科技(上海)有限公司 | Compact constant-current and steady-flow injection pump |
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