CN112177896A - Air path switching device of compressor - Google Patents
Air path switching device of compressor Download PDFInfo
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- CN112177896A CN112177896A CN202011157323.3A CN202011157323A CN112177896A CN 112177896 A CN112177896 A CN 112177896A CN 202011157323 A CN202011157323 A CN 202011157323A CN 112177896 A CN112177896 A CN 112177896A
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- 238000009434 installation Methods 0.000 claims abstract description 50
- 238000007789 sealing Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a gas path switching device of a compressor, which comprises a mounting seat and a gas path control assembly arranged in the mounting seat, wherein the mounting seat is provided with a gas inlet I, a gas inlet II, a gas outlet and a gas path control inlet, the gas path control assembly can control gas paths to form two gas paths, one gas path is formed by discharging gas entering from the gas inlet I through the gas outlet, the gas entering from the gas path control inlet is discharged through the gas inlet II, the other gas path is formed by discharging gas entering from the gas inlet II through the gas outlet, and the gas entering from the gas path control inlet is discharged through the gas inlet I. According to the invention, the main gas circuit and the control gas circuit can be automatically switched with each other through the gas circuit fluidity of the compressor; the structure of a pipe network is simplified, the installation is convenient, the control program is simplified, and the structure of a compressor control system is more compact and reliable.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a gas path switching device of a compressor.
Background
The compressor is a machine for compressing gas to increase gas pressure or conveying gas, and is widely applied. One of the key devices essential for compressors is in the mining industry, the metallurgical industry, the machine manufacturing industry, the civil engineering, the refrigeration and gas separation engineering and the defense industry. The ship-based compressor is used as one of important auxiliary machines of the ship turbine, and has high requirements on the stability, safety and continuity of unit operation, so that a highly reliable, highly integrated and highly professional control system is required to be used as a guarantee. At present, no matter a ship-based compressor or a civil compressor, the switching of the tower A gas circuit and the tower B gas circuit of the compressor is mainly controlled by the opening and closing of an electromagnetic valve arranged on the pipeline, and due to the characteristic of the control of the electromagnetic valve, a corresponding measuring point must be arranged in a control box, so that the program complexity of the control box is increased.
Disclosure of Invention
In view of the above, the present invention provides a switching device for gas paths of a compressor, in which two gas paths are switched by the switching system, and the switching system is simple in structure and easy to control.
The air path switching device of the compressor comprises a mounting seat and an air path control assembly arranged in the mounting seat, wherein an air inlet I, an air inlet II, an air outlet and a control air path air inlet are arranged on the mounting seat, air nozzles are arranged on the air inlet I, the air inlet II, the air outlet and the control air path air inlet, the air inlet I and the air inlet II are communicated with the air outlet and the control air path air inlet through the air path control assembly, the air path control assembly can control an air path to form two air paths, one air is discharged from the air outlet through the air inlet I, the air entering from the control air path air inlet is discharged from the air inlet II, the other air is discharged from the air outlet through the air inlet II, and the air entering from the control air path air inlet is discharged through the air inlet I.
Further, the gas circuit control assembly includes control valve body subassembly I and control valve body subassembly II, control valve body subassembly I sets up on the flow path of air inlet I to the gas vent and the flow path of control gas circuit air inlet to air inlet I, control valve body subassembly II sets up on the flow path of air inlet II to the gas vent and the flow path of control gas circuit air inlet to air inlet II.
Further, control valve body subassembly I includes valve body I and valve body II, valve body installation cavity I and valve body installation cavity II have been seted up side by side to mount pad one side, valve body I is installed in valve body installation cavity I, and valve body II is installed in valve body installation cavity II, valve body installation cavity I and valve body installation cavity II link up through middle route I, valve body I makes air inlet I and I normal open of middle route, valve body I makes control gas circuit air inlet to I one-way link up of air inlet, valve body II makes middle route I link up to the gas vent one-way.
Further, control valve body subassembly II includes valve body III and valve body IV, valve body installation cavity III and valve body installation cavity IV have been seted up side by side to mount pad one side, valve body III is installed in valve body installation cavity III, and valve body IV is installed in valve body installation cavity IV, valve body installation cavity III and valve body installation cavity IV link up through middle route II, valve body III makes air inlet II and middle route II ordinary open, valve body III makes control gas circuit air inlet to II one-way link up of air inlet, valve body IV makes middle route II to one-way link up of gas vent.
Further, valve body I is the same with valve body III structure, but valve body I includes disk seat I, endotheca in disk seat I and axial slip's case I and covers in disk seat I open end with the valve gap I of case I encapsulation, set up the inlet channel I that feeds through in control gas circuit air inlet on the valve gap I, disk seat I radially sets up the air flue I that feeds through in air inlet I and middle passageway I, and air channel I has been seted up to case I excircle, case I is compressed tightly in inlet channel I inboard by elastic seal and makes air channel I communicate in I both ends of air flue, and case I compresses tightly when inlet channel I is inboard, and air channel I is located I axial of air flue and is close to valve gap I one side.
Further, valve body II is the same with valve body IV structure, valve body II includes disk seat II, endotheca in disk seat II and axially sliding's case II and covers in disk seat II open end with the valve gap II of II encapsulation of case, set up on the valve gap II and communicate in the inlet channel II of intermediate access I and disk seat II inner chamber, set up on the valve gap II and communicate in the outlet channel II of disk seat II inner chamber and gas vent, II excircles of case set up with the air channel II of disk seat inner chamber intercommunication, set up in the case II and communicate in the air channel and the oblique air flue of outlet channel II, case II is compressed tightly in outlet channel II inboards by elastic seal.
Furthermore, the valve core I is connected with the valve seat I in the axial direction through an elastic part I, and the elastic part I has elastic force which enables the valve core I to be pressed on the valve cover I and seals the air inlet channel I.
Furthermore, the valve body II is connected with the valve seat II in the axial direction through an elastic part II, and the elastic part II has elastic force which enables the valve core II to be pressed on the valve cover II and seals the air outlet channel II.
Further, the left side of mount pad is seted up to installation cavity I and valve body installation cavity II, the right side of mount pad is seted up to installation cavity III and valve body installation cavity IV, air inlet I and air inlet II are located the upside of mount pad, the gas vent is located the downside of mount pad, control gas circuit air inlet is located the front side or the rear side of mount pad.
Furthermore, the outer ends of the mounting cavity I, the valve body mounting cavity II, the mounting cavity III and the valve body mounting cavity IV are covered with sealing covers.
The invention has the beneficial effects that:
according to the invention, the main gas circuit and the control gas circuit can be automatically switched with each other through the gas circuit fluidity of the compressor; the gas circuit switching system can replace the solenoid valves on all branches in the prior art to realize the switching of gas circuits, so that the control structure is highly integrated, the structure of a pipe network is simplified, the installation is convenient, the traditional solenoid valve control mode is cancelled, the measurement of the control system on pressure points is reduced, the control program is simplified, and the structure of the compressor control system is more compact and reliable.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is an enlarged schematic structural view of the valve body I in FIG. 1;
FIG. 4 is an enlarged schematic structural view of the valve body II in FIG. 1;
Detailed Description
The compressor gas circuit auto-change over device of this embodiment, include mount pad 1 and install the gas circuit control assembly in the mount pad, set up air inlet I2, air inlet II 3, gas vent 4 and control gas circuit air inlet 5 on the mount pad, air inlet I2 and air inlet II 3 are through gas circuit control assembly and gas vent 4 and control gas circuit air inlet 5 intercommunication, the steerable gas circuit of gas circuit control assembly forms two gas circuits, and one of them is the gas that gets into by air inlet I2 and discharges through gas vent 4, and the gas that gets into by control gas circuit air inlet 5 this moment discharges through air inlet II 3, and its two are the gas that gets into by air inlet II 3 and discharge through gas vent 4, and the gas that gets into by control gas circuit air inlet 5 this moment discharges through air inlet I2. The corresponding left, right, front, back, up and down directions in this embodiment are the same as the directions in fig. 1; the device is applied to a compressor gas circuit system, wherein high-pressure gas of the compressor is input into the tower A and the tower B, wherein the air outlets of the tower A and the tower B are respectively communicated with an air inlet I2 and an air inlet II 3, in addition, a control air path is injected into the tower A and the tower B, one of the tower A and the tower B injects high-pressure air into the corresponding air inlet, the existing air path switching is controlled by a complicated pipe network and an electromagnetic valve arranged on each branch pipe, the control system is complicated, the gas circuit switching system of the invention can replace the electromagnetic valves on each branch circuit to realize the switching of the gas circuit, so that the control structure is highly integrated, the structure of a pipe network is simplified, the installation is convenient, the traditional electromagnetic valve control mode is cancelled, the measurement of the control system to the pressure point is reduced, the control program is simplified, and the structure of the compressor control system is more compact and reliable.
Referring to fig. 1, an air tap 13 is installed on the air inlet i 2, the air inlet ii 3, the air outlet 4 and the control air path air inlet 5, both ends of the air tap are of an external thread interface structure, the air tap is composed of an upper pipe and a lower pipe, the upper pipe and the lower pipe are in threaded sealing connection in an outer sleeve, and external pipelines are conveniently connected with the air ports through the air tap;
in this embodiment, the gas circuit control assembly includes control valve body subassembly I and control valve body subassembly II, control valve body subassembly I sets up on the flow path of air inlet I2 to gas vent 4 and the flow path of control gas circuit air inlet 5 to air inlet I2, control valve body subassembly II sets up on the flow path of air inlet II 3 to gas vent 4 and the flow path of control gas circuit air inlet 5 to air inlet II 3. The control valve body assembly I is arranged on each flow path to facilitate switching of air paths.
In this embodiment, control valve body subassembly I includes I6 and II 7 of valve body, 1 one side of mount pad has seted up valve body installation cavity I and valve body installation cavity II side by side, I6 of valve body is installed in valve body installation cavity I, and II 7 of valve body are installed in valve body installation cavity II, I and II of valve body installation cavity link up through middle route I10 through middle route, I6 of valve body makes air inlet I2 and I10 normal open of middle route, I6 of valve body makes control gas circuit air inlet 5 link up to air inlet I2 one-way, II 7 of valve body make middle route I10 link up to 4 one-way exhaust ports. As shown in fig. 1, the gas entering from the gas inlet i 2 flows to the intermediate passage i 10 through the valve body i 6 and flows to the gas outlet 4 through the valve body ii 7 to be discharged, and whether the gas entering from the gas inlet 5 of the control gas circuit can be determined through the gas inlet i 2 according to the gas entering from the gas inlet i 2 and the gas pressure of the gas entering from the gas inlet 5 of the control gas circuit, in the actual operation process, the gas pressure of the gas entering from the gas inlet i 2 is greater than the gas pressure of the gas entering from the gas inlet 5 of the control gas circuit, so that the gas entering from the gas inlet 5 of the control gas circuit cannot be discharged through the gas inlet i 2 under the working;
in this embodiment, control valve body subassembly II includes valve body III 8 and valve body IV 9, valve body installation cavity III and valve body installation cavity IV have been seted up side by side to 1 one side of mount pad, valve body III 8 is installed in valve body installation cavity III, and valve body IV 9 is installed in valve body installation cavity IV, valve body installation cavity III and valve body installation cavity IV link up through middle route II 11, valve body III 8 makes air inlet II 3 and middle route II 11 always pass through, valve body III 8 makes control gas circuit air inlet 5 to one-way link up of air inlet II 3, valve body IV 9 makes middle route II 11 to one-way link up of gas vent 4. As shown in fig. 1, the gas entering from the gas inlet ii 3 flows to the intermediate passage ii 11 through the valve body iii 8 and flows to the gas outlet 4 through the valve body iv 9 to be discharged, and whether the gas entering from the gas inlet 5 of the control gas circuit can be determined through the gas inlet ii 3 according to the gas pressure of the gas entering from the gas inlet ii 3 and the gas pressure of the gas entering from the gas inlet 5 of the control gas circuit, during the actual operation process, the gas pressure of the gas entering from the gas inlet ii 3 is greater than the gas pressure of the gas entering from the gas inlet 5 of the control gas circuit, so that the gas entering from the gas inlet 5 of the control gas circuit cannot be discharged through the gas inlet ii 3; because only one air inlet is in the gas transmission state in air inlet I2 and the air inlet II 3, so when the air input of air inlet I2, the valve body III 8 can be opened to the gas that 5 entering of control gas circuit air inlet when the air input II 3 is defeated, and the valve body I6 is opened to the gas that 5 entering of control gas circuit air inlet when the air input II 3 is defeated, and I2 is discharged through air inlet.
In the embodiment, the valve body i 6 is the same as the valve body iii 8 in structure, the valve body i 6 includes a valve seat i 6a, a valve element i 6b which is sleeved in the valve seat i 6a and can axially slide, and a valve cover i 6c which covers an opening end of the valve seat i 6a and encapsulates the valve element i 6b, an air inlet channel i 6d communicated with the air inlet 5 of the control air path is formed in the valve cover i, an air passage i 6e communicated with the air inlet i 2 and the intermediate passage i 10 is radially formed in the valve seat i 6a, a vent groove i 6f is formed in an outer circle of the valve element i, the valve element i is elastically sealed and compressed on the inner side of the air inlet channel i 6d, and the vent groove i 6f is axially close to one side of the valve cover i 6e when the valve element i is compressed on the inner side of the air inlet. With reference to fig. 3, the valve body i 6 and the valve body iii 8 have the same structure, are arranged in a left-right symmetrical manner in the arrangement direction, and have the same operation mechanism, and the valve body i 6 is taken as an example for explanation, the air passage i 6e is radially arranged on the valve body, and due to the hollow structure inside the valve body, the actual air passage i 6e is two openings which are radially opposite and arranged on the valve body, one opening is the upper end of the air passage i, and the other opening is the lower end of the air passage i; the vent groove I6 f is an annular groove which is formed in the upper portion of the outer circle of the valve core and has a V-shaped section, the vent groove I6 f is communicated with the upper end and the lower end of the air passage I6 e, gas entering from the gas inlet I2 flows into the middle passage I10 through the upper end of the air passage I6 e, the vent groove I6 f and the lower end of the air passage I6 e, high-pressure gas entering the vent groove I6 f has pressure on the valve core axially towards one side of the valve cover, the valve core is pressed on the valve cover in a sealing mode and the inner side of the gas inlet channel I6 d is sealed, and at the moment, the gas entering through the gas inlet I2 cannot be discharged through the; the gas entering the gas inlet 5 of the control gas path enters the gas inlet channel I6 d and has axial pressure on the valve core, in the actual operation process, the gas entering the gas inlet 5 of the control gas path is lower than the pressure of the gas entering the gas inlet I2, the axial acting force on the valve core I6 b in the gas inlet channel I6 d is lower than the axial acting force on the valve core I6 b by the gas in the vent groove I6 f, so the valve core I6 b cannot be opened, and the gas entering the gas inlet 5 of the control gas path cannot enter the gas inlet I2;
in this embodiment, the valve body ii 7 is the same as the valve body iv 9 in structure, the valve body ii 7 includes a valve seat ii 7a, a valve element ii 7b which is sleeved in the valve seat ii and can slide axially, and a valve cover ii 7c which covers an opening end of the valve seat ii and encapsulates the valve element ii, an air inlet channel ii 7d communicated with the intermediate passage i 10 and an inner cavity of the valve seat ii is provided on the valve cover ii 7c, an air outlet channel ii 7e communicated with the inner cavity of the valve seat ii and the air outlet 4 is provided on the valve cover ii 7c, a vent groove ii 7f communicated with the inner cavity of the valve seat is provided on an outer circle of the valve element ii, an inclined air passage 7g communicated with the vent groove 7f and the air outlet channel ii 7e is provided in the valve element ii, and the valve element ii is. Referring to fig. 4, the valve body ii 7 and the valve body iv 9 have the same structure, are arranged in a left-right symmetrical manner, and have the same operation mechanism, taking the valve body ii 7 as an example for explanation, the air inlet channel ii 7d is composed of a radial through hole formed in the radial direction and an axial hole formed in the axial direction, wherein the air vent groove ii 7f is an annular groove formed in the outer circle of the valve core, and the air vent groove is communicated with the inner cavity of the valve seat, which means that when the air inlet channel ii 7d is opened by the axial sliding of the valve core, the air in the air inlet channel ii 7d enters the inner cavity of the valve seat and can enter the air vent; the high-pressure gas entering the middle passage I10 exerts an axial acting force on the valve core and pushes the valve core to slide rightwards to open the gas inlet channel II 7d, at the moment, the high-pressure gas is discharged through the vent groove II 7f, the inclined gas channel 7g and the gas outlet channel II 7e through the gas outlet 4, and in combination with the figure 1, the gas entering the gas channel gas inlet 5 is controlled to enter the valve body IV 9 through the valve body III 8 and exert an axial force for opening the valve core of the valve body IV 9, and the high-pressure gas entering through the air inlet I2 enters the air outlet 4 to apply axial force for closing the valve core of the valve body IV 9, because the pressure of the gas entering from the gas inlet 5 of the control gas circuit is smaller than that of the gas entering from the gas inlet I2 in the actual operation process, the valve core of the valve body IV 9 is enabled to bear larger acting force for closing the valve core, so that the valve core of the valve body IV 9 cannot be opened, and gas entering the control gas path gas inlet 5 is enabled to be discharged through the gas inlet II 3.
In this embodiment, the valve element i 6b is axially connected to the valve seat i 6a through an elastic member i 6g, and the elastic member i has an elastic force that presses the valve element i on the valve cover i and seals the air inlet passage i 6 d. The valve body II 7 is connected with the valve seat II 7a in the axial direction through an elastic part II 7h, and the elastic part II has elastic force which enables the valve core II to be pressed on the valve cover II and seals the air outlet channel II 7 e. Referring to fig. 3 and 4, the elastic element i 6g and the elastic element ii 7h both use cylindrical coil springs, and certainly, other known elastic elements may also be used, and the elastic coefficients of the elastic element i 6g and the elastic element ii 7h are determined according to actual use conditions, and corresponding valve cores should be included to be opened or closed timely according to gas circuits.
In this embodiment, the left side of mount pad is seted up to installation cavity I and valve body installation cavity II, the right side of mount pad is seted up to installation cavity III and valve body installation cavity IV, air inlet I2 and II 3 of air inlet are located the upside of mount pad, gas vent 4 is located the downside of mount pad, control gas circuit air inlet 5 is located the front side or the rear side of mount pad. As shown in connection with figures 1 and 2,
the arrangement structure reasonably utilizes the spatial layout of the mounting seat, and is beneficial to the assembly of each component.
In this embodiment, the outer ends of the mounting cavity i, the valve body mounting cavity ii, the mounting cavity iii and the valve body mounting cavity iv are covered with the sealing covers 12. The sealing cover is screwed in the outer end part of the corresponding mounting cavity in a thread sealing mode to prevent gas leakage, and a sealing ring can be arranged between the sealing cover and the valve seat to improve the sealing effect of the sealing cover.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The utility model provides a compressor gas circuit auto-change over device which characterized in that: include the mount pad and install the gas circuit control assembly in the mount pad, set up air inlet I, air inlet II, gas vent and control gas circuit air inlet on the mount pad, install the air cock on air inlet I, air inlet II, gas vent and the control gas circuit air inlet, air inlet I and air inlet II are through gas circuit control assembly and gas vent and control gas circuit air inlet intercommunication, the steerable gas circuit of gas circuit control assembly forms two gas circuits, and the one of which is the gas that gets into by air inlet I discharges through the gas vent, and the gas that gets into by control gas circuit air inlet this moment discharges through air inlet II, and its two are the gas that gets into by air inlet II discharges through the gas vent, and the gas that gets into by control gas circuit air inlet this moment discharges through air inlet I.
2. The press of claim 1. The compressor gas circuit switched systems, its characterized in that: the gas circuit control assembly comprises a control valve body assembly I and a control valve body assembly II, the control valve body assembly I is arranged on a flow path from the gas inlet I to the gas outlet and a flow path from the gas circuit gas inlet to the gas inlet I, and the control valve body assembly II is arranged on a flow path from the gas inlet II to the gas outlet and a flow path from the gas circuit gas inlet to the gas inlet II.
3. The compressor air path switching device of claim 2, wherein: control valve body subassembly I includes valve body I and valve body II, valve body installation cavity I and valve body installation cavity II have been seted up side by side to mount pad one side, valve body I is installed in valve body installation cavity I, and valve body II is installed in valve body installation cavity II, valve body installation cavity I and valve body installation cavity II link up through middle route I, valve body I makes air inlet I and I normal open of middle route, valve body I makes control gas circuit air inlet to I one-way link up of air inlet, valve body II makes middle route I link up to the gas vent one-way.
4. The compressor air path switching device of claim 3, wherein: control valve body subassembly II includes valve body III and valve body IV, valve body installation cavity III and valve body installation cavity IV have been seted up side by side to mount pad one side, valve body III is installed in valve body installation cavity III, and valve body IV is installed in valve body installation cavity IV, valve body installation cavity III and valve body installation cavity IV link up through middle route II, valve body III makes air inlet II and middle route II normal open, valve body III makes control gas circuit air inlet to II one-way link up of air inlet, valve body IV makes middle route II to one-way link up of gas vent.
5. The compressor air path switching device of claim 4, wherein: the valve body I is the same as the valve body III in structure, the valve body I comprises a valve seat I, a valve core I and a valve cover I, the valve core I is sleeved in the valve seat I and can axially slide, the valve cover I covers the opening end of the valve seat I to package the valve core I, an air inlet channel I communicated with an air inlet of a control air path is arranged on the valve cover I, the valve seat I is radially provided with an air passage I communicated with the air inlet I and a middle passage I, an outer circle of the valve core I is provided with a vent groove I, the valve core I is tightly pressed on the inner side of the air inlet channel I by elastic sealing and enables the vent groove I to be communicated with two ends of the air passage I, and when the valve core I is.
6. The compressor air path switching device of claim 5, wherein: the valve body II is the same as the valve body IV in structure, the valve body II comprises a valve seat II, a valve core II which is sleeved in the valve seat II and can axially slide, and a valve cover II which covers the opening end of the valve seat II and encapsulates the valve core II, an air inlet channel II communicated with the inner cavity of the intermediate passage I and the inner cavity of the valve seat II is arranged on the valve cover II, an air outlet channel II communicated with the inner cavity of the valve seat II and an air outlet is arranged on the valve cover II, a vent groove II communicated with the inner cavity of the valve seat is arranged on the excircle of the valve core II, an inclined air passage communicated with the vent groove and the air outlet channel II is arranged in the valve core II, and the.
7. The compressor air path switching device of claim 5, wherein: the valve element I is connected with the valve seat I in the axial direction through an elastic part I, and the elastic part I has elastic force which enables the valve element I to be pressed on the valve cover I and seals the air inlet channel I.
8. The compressor air path switching device of claim 6, wherein: the valve body II is connected with the valve seat II in the axial direction through an elastic part II, and the elastic part II has elastic force which enables the valve core II to be pressed on the valve cover II and seals the air outlet channel II.
9. The compressor air path switching device of claim 4, wherein: the left side of mount pad is seted up to installation cavity I and valve body installation cavity II, the right side of mount pad is seted up to installation cavity III and valve body installation cavity IV, air inlet I and air inlet II are located the upside of mount pad, the gas vent is located the downside of mount pad, control gas circuit air inlet is located the front side or the rear side of mount pad.
10. The compressor air path switching device of claim 4, wherein: and sealing covers are covered on the outer ends of the mounting cavity I, the valve body mounting cavity II, the mounting cavity III and the valve body mounting cavity IV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011157323.3A CN112177896A (en) | 2020-10-26 | 2020-10-26 | Air path switching device of compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011157323.3A CN112177896A (en) | 2020-10-26 | 2020-10-26 | Air path switching device of compressor |
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| CN112177896A true CN112177896A (en) | 2021-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023024356A1 (en) * | 2021-08-27 | 2023-03-02 | 江苏鱼跃医疗设备股份有限公司 | Air cushion valve and inflatable mattress |
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- 2020-10-26 CN CN202011157323.3A patent/CN112177896A/en active Pending
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| WO2023024356A1 (en) * | 2021-08-27 | 2023-03-02 | 江苏鱼跃医疗设备股份有限公司 | Air cushion valve and inflatable mattress |
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Application publication date: 20210105 |