CN218883042U - Air inlet pressure loading and discharging valve device and dry screw air compressor comprising same - Google Patents
Air inlet pressure loading and discharging valve device and dry screw air compressor comprising same Download PDFInfo
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- CN218883042U CN218883042U CN202223315676.9U CN202223315676U CN218883042U CN 218883042 U CN218883042 U CN 218883042U CN 202223315676 U CN202223315676 U CN 202223315676U CN 218883042 U CN218883042 U CN 218883042U
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Abstract
The utility model discloses an admission pressure loading and unload valve device and contain its dry screw air compressor, admission pressure loading and unload valve device include the valve body, the loose axle, a spring, the valve clack, diaphragm and signal pressure end cover, the loose axle, spring and diaphragm all are located the inside drive intracavity of valve body, the valve clack is rotationally connected in the inside inlet channel of valve body, the left side of valve body has been seted up and has been unloaded the air outlet, signal pressure end cover is connected in the right side of valve body, the signal pressure hole has been seted up on the signal pressure end cover, the signal pressure hole all is linked together with the inside drive chamber of valve body with unloading the air outlet, the diaphragm is connected in the right-hand member of loose axle, the both ends of spring are supported respectively to lean on and are acted on in the valve body and the loose axle, the loose axle is connected in the valve clack, and the loose axle can control about in the valve body. The driving medium is clean, pollution-free and wide in source, and the hidden danger of leakage of oil pressure driving lubricating oil is avoided; the loading and unloading functions are integrated into a whole, and the integration degree is high.
Description
Technical Field
The utility model relates to an admission pressure loading and unload valve gear and contain its dry screw air compressor.
Background
As is known, the inlet pressure loading and discharging valves (hereinafter referred to as inlet valves) used in the dry screw air compressors on the market are mainly oil pressure driven type inlet valves; as the name implies, the oil pressure-driven intake valve drives the opening and closing of the intake valve by the pressure of the lubricating oil; the lubricating oil of the oil pressure driving type air inlet valve comes from a lubricating oil tank of a machine body, is pressurized by an independent oil pump (or a coaxial oil pump), and is connected to an oil pressure control signal pressure inlet of the air inlet valve through a pipeline after passing through an oil pressure regulating valve, an oil filter base, an oil filter, an electromagnetic valve and the like; therefore, the signal pressure control system of the oil pressure driving type air inlet valve is complex, and meanwhile, the oil pressure driving type air inlet valve has the defects of complex structure, high cost, hidden danger of leakage of lubricating oil and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the above-mentioned not enough of existing, the utility model provides an inlet pressure loading and unload valve gear and contain its dry screw air compressor.
The utility model discloses a realize through following technical scheme:
an air inlet pressure loading and unloading valve device comprises a valve body, a movable shaft, a spring, a valve clack, a diaphragm and a signal pressure end cover, wherein the movable shaft, the spring and the diaphragm are all positioned in an internal driving cavity of the valve body, the valve clack is rotatably connected in an internal air inlet channel of the valve body, an unloading air outlet is formed in the left side of the valve body, the signal pressure end cover is connected to the right side of the valve body, a signal pressure hole is formed in the signal pressure end cover, the signal pressure hole and the unloading air outlet are both communicated with an internal driving cavity of the valve body, the diaphragm is connected to the right end of the movable shaft, two ends of the spring are respectively abutted against the movable shaft and the movable shaft in the valve body and exert a rightward acting force on the movable shaft, the movable shaft is connected to the valve clack, and the movable shaft can move left and right in the valve body and has a loading state and an unloading state;
in the loading state, the pressure obtained by the movable shaft through the signal pressure hole moves leftwards, so that the movable shaft is sealed at the air discharge outlet, and the movable shaft drives the valve clack to open;
in the unloading state, the movable shaft moves rightwards under the action of the spring, so that the movable shaft is separated from the unloading air outlet, the unloading air outlet is opened, the diaphragm is sealed in the signal pressure hole, and the movable shaft drives the valve clack to close.
Furthermore, the air inlet pressure loading and discharging valve device further comprises a sliding block, an inward concave groove is formed in the outer surface of the movable shaft, one end of the sliding block is installed in the groove, and the other end of the sliding block is connected to the valve clack.
Furthermore, the back surface of the valve clack is provided with an outward convex mounting boss, and the sliding block is connected with the mounting boss;
and/or the front surface of the valve clack is provided with a convex handle which is convex outwards.
Furthermore, the air inlet pressure loading and discharging valve device also comprises a sealing block, the sealing block is positioned in the discharging air outlet, and the movable shaft extends into the discharging air outlet and is in sealing abutting joint with the sealing block;
and/or a shaft sealing part is arranged at the left end of the movable shaft and is in sealing abutting joint with the air discharging outlet.
Further, an air supplementing hole is formed in the valve clack.
Further, the diaphragm is bowl-shaped and bulges outwards in the direction close to the signal pressure hole;
and/or the diaphragm is made of nitrile rubber.
Furthermore, a discharge air inlet is also arranged on the valve body and is communicated with the internal driving cavity of the valve body;
and/or the valve body is also provided with an exhaust port which is communicated with the internal driving cavity of the valve body.
Furthermore, the valve body is made of aluminum, and the surface treatment mode of the valve body is anodic oxidation.
A dry screw air compressor comprising an inlet pressure loading and discharge valve arrangement as described above.
Furthermore, the dry screw air compressor comprises an air compressor unit and a compressed air pipeline, and two ends of the compressed air pipeline are respectively connected to the air compressor unit and the signal pressure end cover and are communicated with the inside of the air compressor unit and the signal pressure hole.
The beneficial effects of the utility model reside in that:
the air inlet pressure loading and discharging valve device and the dry screw air compressor comprising the same have simple signal pressure control system, do not need additional lubricating oil pressure regulating valve, oil filter base, oil filter and other materials, and have cost advantage; the driving medium adopting compressed air is clean, pollution-free and wide in source, and the hidden danger of leakage of oil pressure driving lubricating oil is avoided; meanwhile, the loading and unloading functions are integrated, the integration degree is high, the structure is simple, and the maintenance cost is low.
Drawings
Fig. 1 is a schematic perspective view of an intake pressure loading and discharging valve device according to an embodiment of the present invention.
Fig. 2 is a schematic top view of the intake pressure loading and discharging valve device according to the embodiment of the present invention.
Fig. 3 is a schematic diagram of an internal structure of an intake pressure loading and discharging valve device according to an embodiment of the present invention.
Fig. 4 is a schematic front view of the valve flap according to the embodiment of the present invention.
Fig. 5 is a schematic bottom view of a valve flap according to an embodiment of the present invention.
Description of reference numerals:
Dump air inlet 12
Exhaust port 13
Signal pressure end cap 2
Shaft seal part 31
Spring 5
Valve flap 6
Raised handle 63
Raised cylindrical boss 64
Sealing block 7
Slide block 8
Rotating shaft 9
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced.
As shown in fig. 1, 2, 3, 4 and 5, the present embodiment discloses a dry screw air compressor including an intake pressure loading and discharging valve device. The air inlet pressure loading and discharging valve device comprises a valve body 1, a signal pressure end cover 2, a movable shaft 3, a diaphragm 4, a spring 5 and a valve clack 6, wherein the movable shaft 3, the spring 5 and the diaphragm 4 are all positioned in an internal driving cavity of the valve body 1, the valve clack 6 is rotatably connected in an internal air inlet channel of the valve body 1, a discharging air outlet 11 is formed in the left side of the valve body 1, the signal pressure end cover 2 is connected to the right side of the valve body 1, a signal pressure hole 21 is formed in the signal pressure end cover 2, the signal pressure hole 21 and the discharging air outlet 11 are both communicated with an internal driving cavity of the valve body 1, the diaphragm 4 is connected to the right end of the movable shaft 3, two ends of the spring 5 respectively abut against the movable shaft 3 and the valve body 1 and exert a rightward acting force on the movable shaft 3, the movable shaft 3 is connected to the valve clack 6, and the movable shaft 3 can move left and right in the valve body 1 and has a loading state and an unloading state; in the loading state, the pressure obtained by the movable shaft 3 through the signal pressure hole 21 moves leftwards, so that the movable shaft 3 is sealed at the air discharge outlet 11, and the movable shaft 3 drives the valve clack 6 to open; in the unloading state, the movable shaft 3 moves rightwards under the action of the spring 5, so that the movable shaft 3 is separated from the unloading air outlet 11 and the unloading air outlet 11 is opened, the diaphragm 4 is sealed in the signal pressure hole 21, and the movable shaft 3 drives the valve clack 6 to close.
When the dry screw air compressor starts to be started or is in an unloading state, the electromagnetic valve is powered off, the air inlet valve loses signal pressure, the spring 5 restores the original position under the action of spring force, and meanwhile, the movable shaft 3 is driven to return to the rightmost side; the loose axle 3 is connected in valve clack 6, and the removal of loose axle 3 will drive the rotation of valve clack 6, and valve clack 6 closes when the loose axle 3 moves to the rightmost side, and admission valve closes and admission valve stops admitting air promptly, because loose axle 3 gets back to rightmost side and leads to the left end of loose axle 3 and valve body 1 to break away from each other in order to realize unloading air outlet 11 and open, and sealed inefficacy, organism exhaust compressed air is through discharging from unloading air outlet 11, for compressed air unloads the process promptly.
When the dry screw air compressor is in a loading state/loading state, the electromagnetic valve is electrified, the air inlet valve obtains signal pressure, compressed air enters the valve body 1 through the signal pressure hole 21, the membrane 4 is pushed to move leftwards, the pressure of the compressed air is larger than the spring acting force of the spring 5, namely the movable shaft 3 moves to the leftmost side, the left end of the movable shaft 3 extends into the discharge air outlet 11 to realize sealing, and the discharge of the compressed air is stopped; meanwhile, the movement of the movable shaft 3 drives the valve clack 6 to operate, the valve clack 6 is opened immediately, compressed air enters from the air inlet, and the unit is loaded.
In the dry screw air compressor of the embodiment, compressed air pushes the movable shaft 3 to move through the signal pressure hole 21 to seal the discharge air outlet 11, a signal pressure control system is simple, and additional materials such as a lubricating oil pressure regulating valve, an oil filter base and an oil filter are not needed, so that the dry screw air compressor has a cost advantage; the driving medium adopting compressed air is clean, pollution-free and wide in source, and the hidden danger of leakage of oil pressure driving lubricating oil is avoided; meanwhile, the loading and unloading functions are integrated, the integration degree is high, the structure is simple, the maintenance cost is low, the structure is compact, the installation mode is flexible, and later maintenance can be carried out only by regularly replacing the quick-wear parts.
The dry screw air compressor comprises an air compressor unit and a compressed air pipeline, wherein two ends of the compressed air pipeline are respectively connected to the air compressor unit and the signal pressure end cover 2 and are communicated with the inside of the air compressor unit and the signal pressure hole 21. Compare the driving admission valve of oil pressure among the prior art, the utility model discloses a dry screw air compressor's admission pressure loading and unload valve device only need get compressed air all the way from the air compressor machine inter-stage pipeline of air compressor machine unit, control the admission valve by admission pressure loading and unloading valve device again and open and close, it is simple consequently to have a control system, required material is few, the sexual valence relative altitude and avoid the lubricating oil seepage to cause advantages such as pollution, its control system is simple, rely on air pressure drive, the admission pressure loss is low, the easy-to-damage spare is few, can satisfy dry screw air compressor to admission pressure loading and unload the demand of valve device better, especially more be fit for being used for the dry screw air compressor sensitive to the compressed air quality. Meanwhile, the air inlet caliber is large, the pressure loss is low, and the reduction of the compression ratio and the exhaust temperature of a first-stage engine body is facilitated; the driving pressure is low, the valve can be driven by 0.5Bar, and the valve clack 6 can be fully opened by 1.5 Bar.
The air inlet pressure loading and discharging valve device also comprises a sealing block 7, the sealing block 7 is positioned in the discharging air outlet 11, and the movable shaft 3 extends into the discharging air outlet 11 and is in sealing abutting joint with the sealing block 7. Install the setting with sealed piece 7 in unloading air outlet 11 for loose axle 3 stretches into in unloading air outlet 11 and supports to lean on each other with sealed piece 7 and seal in order to realize sealed, has effectively improved the leakproofness of dry screw air compressor when being in loading state/load state, has improved dry screw air compressor's safety and stability greatly. Wherein, the material of the sealing block 7 is rubber. The sealing form of the sealing block 7 is flange form and is installed and connected in the valve body 1.
The left end of the movable shaft 3 is provided with a shaft seal portion 31, and the shaft seal portion 31 is sealingly abutted against the discharge air outlet 11. The shaft sealing portion 31 is used for extending into the unloading air outlet 11 and abutting against the sealing block 7 to realize sealing, the sealing performance of the dry screw air compressor in a loading state/loading state is further improved, and the safety and stability of the dry screw air compressor are greatly improved.
The valve body 1 is also provided with a discharge air inlet 12, and the discharge air inlet 12 is communicated with an internal driving cavity of the valve body 1. When the dry screw air compressor is in a starting or unloading state, compressed air discharged from the machine body enters through the unloading air inlet 12 and is discharged from the unloading air outlet 11, namely, the compressed air is subjected to an unloading process. Wherein the sealing form of the dump air inlet 12 is an internal thread.
The valve body 1 is also provided with an exhaust port 13, and the exhaust port 13 is communicated with an internal driving cavity of the valve body 1. When the dry screw air compressor is in a loading state/loading state, the left end of the movable shaft 3 extends into the discharge air outlet 11 to realize sealing, the discharge of compressed air is stopped, and meanwhile, the air in the cylinder is discharged to the atmosphere through the exhaust port 13. Wherein, the exhaust port 13 is arranged at the right side position of the valve body 1, and the exhaust port 13 is of an internal thread structure.
The bottom of the valve body 1 is in the form of a flange and provided with fastener mounting holes. The valve body 1 is installed and connected through the fastener installation hole, and the bottom of the valve body is provided with a flange, so that the limitation of use occasions is less; and at the later stage, only the quick-wear parts need to be replaced according to the plan. The protruding position in bottom of valve body 1 is provided with the pressure loss of admitting air and detects the mouth, and the pressure loss of admitting air detects the mouth and is the internal thread structure. The interior of the valve body 1 is a circular through hole air inlet structure. The valve body 1 is made of aluminum, and the surface treatment mode of the valve body 1 is anodic oxidation.
The intake pressure loading and discharging valve device further comprises a sliding block 8, an inward-recessed groove is formed in the outer surface of the movable shaft 3, one end of the sliding block 8 is installed in the groove, and the other end of the sliding block 8 is connected to the valve clack 6. Through having seted up a recess on loose axle 3, slider 8 is installed along with the simultaneous rotation of loose axle 3 to the groove, drives the rotation of valve clack 6 through the removal of loose axle 3 and slider 8 to drive opening, closing of valve clack 6.
The back of the valve clack 6 is provided with an outward convex mounting boss 62, and the slider 8 is connected to the mounting boss 62. The slider 8 is square, and the middle of the slider 8 is a circular through hole. The two ends of the slider 8 will be mounted in the grooves and the mounting bosses 62, respectively. Wherein, the material of the slide block 8 is polyethylene terephthalate.
The valve flap 6 is of a circular ring-shaped structure. The valve clack 6 is provided with an air supplementing hole 61, the air supplementing hole 61 is a circular through hole, when the movable shaft 3 moves to the rightmost side, the valve clack 6 is closed, namely the air inlet valve is closed, the air inlet valve stops air inlet, and at the moment, internal circulation air supplementing is carried out through the air supplementing hole 61 on the valve clack 6 so as to supply the dry screw air compressor to carry out internal circulation air supplementing in the unloading state. Preferably, the front face of the valve flap 6 is provided with a raised handle 63 projecting outwardly.
The two ends of the valve clack 6 are respectively provided with a raised cylindrical boss 64, the interior of the valve clack is of a hollow structure, and the surface of the valve clack is provided with a bolt mounting hole. The two raised cylindrical bosses 64 are fixed on the rotating shaft 9 through fasteners, the front and rear sides of the valve body 1 are respectively provided with a rotating shaft mounting hole, the hole sites are circular through holes and are in front and rear symmetrical positions, and the valve clack 6 is rotatably connected in the valve body 1 through the rotating shaft 9.
The diaphragm 4 is located between the signal pressure end cover 2 and the movable shaft 3 and divides and seals the two chambers by means of the diaphragm 4. The diaphragm 4 is bowl-shaped and bulges outward in the direction close to the signal pressure hole 21. The diaphragm 4 is installed at the right end of the movable shaft 3 and seals the signal pressure hole 21. When compressed air enters the signal pressure end cover through the discharge air outlet 11, the compressed air pushes the diaphragm 4 and the movable shaft 3 to move towards the left side until the sealing block 7 is sealed with the shaft sealing part 31 of the movable shaft 3; when the compressed air is cut off, the diaphragm 4 and the movable shaft 3 move to the right side under the action of the spring force of the spring 5 until the spring 5 is reset, and the diaphragm 4 divides and seals the chambers at the two sides. Wherein, the material of the diaphragm 4 is nitrile rubber.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (10)
1. An intake pressure loading and unloading valve device is characterized by comprising a valve body, a movable shaft, a spring, a valve clack, a diaphragm and a signal pressure end cover, wherein the movable shaft, the spring and the diaphragm are all positioned in an internal driving cavity of the valve body;
in the loading state, the pressure obtained by the movable shaft through the signal pressure hole moves leftwards, so that the movable shaft is sealed at the air discharge outlet, and the movable shaft drives the valve clack to open;
in the unloading state, the movable shaft moves rightwards under the action of the spring, so that the movable shaft is separated from the unloading air outlet, the unloading air outlet is opened, the diaphragm is sealed in the signal pressure hole, and the movable shaft drives the valve clack to close.
2. The intake pressure charging and discharging valve device according to claim 1, further comprising a slider, wherein the outer surface of the movable shaft has a recess which is recessed inward, one end of the slider is fitted into the recess, and the other end of the slider is connected to the valve flap.
3. The intake pressure loading and discharging valve device according to claim 2, wherein a mounting boss protruding outward is provided on the back surface of the valve flap, and the slider is connected to the mounting boss;
and/or the front surface of the valve clack is provided with a convex handle which is convex outwards.
4. The intake pressure loading and unloading valve apparatus of claim 1, further comprising a seal block located within the unloading air outlet, the movable shaft extending into the unloading air outlet and sealing against the seal block;
and/or a shaft sealing part is arranged at the left end of the movable shaft and is in sealing abutting joint with the air discharge outlet.
5. The intake pressure charging and discharging valve device according to claim 1, wherein the valve flap is provided with an air replenishing hole.
6. The intake pressure charging and discharging valve device according to claim 1, wherein said diaphragm is bowl-shaped and is outwardly convex in a direction approaching said signal pressure hole;
and/or the diaphragm is made of nitrile rubber.
7. The intake pressure loading and bleed valve apparatus as defined in claim 1, wherein said valve body is further provided with a bleed air inlet, said bleed air inlet being in communication with said internal drive chamber of said valve body;
and/or the valve body is also provided with an exhaust port which is communicated with the internal driving cavity of the valve body.
8. The intake pressure loading and unloading valve device according to claim 1, wherein the valve body is made of aluminum, and the surface treatment of the valve body is anodic oxidation.
9. A dry screw air compressor, characterized in that it comprises an inlet pressure loading and discharge valve device according to any one of claims 1 to 8.
10. The dry screw air compressor of claim 9, comprising an air compressor unit and a compressed air line, both ends of the compressed air line being connected to the air compressor unit and the signal pressure end cap, respectively, and communicating with the inside of the air compressor unit and the signal pressure port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223315676.9U CN218883042U (en) | 2022-12-09 | 2022-12-09 | Air inlet pressure loading and discharging valve device and dry screw air compressor comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223315676.9U CN218883042U (en) | 2022-12-09 | 2022-12-09 | Air inlet pressure loading and discharging valve device and dry screw air compressor comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218883042U true CN218883042U (en) | 2023-04-18 |
Family
ID=85952938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223315676.9U Active CN218883042U (en) | 2022-12-09 | 2022-12-09 | Air inlet pressure loading and discharging valve device and dry screw air compressor comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218883042U (en) |
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2022
- 2022-12-09 CN CN202223315676.9U patent/CN218883042U/en active Active
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