Air inlet adjusting device of air compressor

Abstract

The utility model relates to the technical field of air compressors, in particular to an air compressor air inlet adjusting device which comprises a bottom plate, an air compressor is fixedly arranged on the bottom plate and comprises an air inlet pipe and an air outlet pipe, a filter and an electromagnetic valve are sequentially arranged at the end of the air inlet pipe, the air outlet pipe is communicated with a first communicating pipe, and the first communicating pipe is communicated with a second communicating pipe. The other end of the first communicating pipe communicates with an adjusting assembly, the adjusting assembly is provided with a second communicating pipe, and the second communicating pipe communicates with an air inlet pipe between the electromagnetic valve and the air compressor. The adjusting assembly can adjust the exhaust pressure during starting, and the situation that the pressure in the air outlet pipe is too large, and consequently the air outlet pipe and the electromagnetic valve are impacted is prevented. And meanwhile, the exhaust pressure can be prevented from being too large or too small.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, and particularly relates to an air intake regulating device for an air compressor. Background Art

[0002] An air compressor, abbreviated as an air compressor, is a device for compressing air. Traditional air compressors control the intake air volume through an inverse proportion valve (also known as a "capacity regulating valve"). The implementation process is as follows: when the exhaust pressure rises to a certain level, the pressure signal is transmitted through the pipeline to the inlet of the inverse proportion valve, and the inverse proportion valve outputs a decreasing pressure signal to the cylinder. The cylinder retracts a certain stroke, thereby closing the butterfly valve and reducing the intake air passage to achieve the purpose of reducing the intake air volume; conversely, when the exhaust pressure drops, the inverse proportion valve inputs an increasing pressure signal, the cylinder extends, and the butterfly valve is pushed to open more intake air passages to increase the intake air volume. This "passive and lagging" regulation method has some defects: when the exhaust pressure is greater than the preset value, the motor load will increase, wasting electric energy; when the exhaust pressure is less than the preset value, the air compressor cannot provide sufficient pressure air. Content of the Utility Model

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an air intake regulating device for an air compressor.

[0004] The utility model provides an air intake regulating device for an air compressor, which includes a bottom plate. An air compressor is fixedly arranged on the bottom plate. The air compressor includes an air inlet pipe and an air outlet pipe. A filter and a solenoid valve are sequentially arranged at the end of the air inlet pipe. The air outlet pipe is communicated with a first connecting pipe. The other end of the first connecting pipe is communicated with an adjusting component. The adjusting component is provided with a second connecting pipe, and the second connecting pipe is communicated with the air inlet pipe between the solenoid valve and the air compressor;

[0005] The adjusting component includes an upper shell, a middle shell and a lower shell which are fixedly connected in sequence. An upper through hole is arranged on the left side of the upper shell, and the upper through hole is fixedly communicated with the first connecting pipe. A second connecting pipe is arranged at the left end of the lower shell, and an air inlet is arranged at the right end of the lower shell. The air inlet and the second connecting pipe are communicated through a lower communication cavity;

[0006] The middle shell includes a left through hole and a right through hole, both of which penetrate the middle shell. A chute is horizontally arranged at the upper end of the middle shell, and a rectangular valve plate is slidably and sealingly connected in the chute. A valve plate hole is arranged at the right end of the rectangular valve plate.

[0007] Furthermore, a screw is fixedly connected to the right end of the rectangular valve plate, a nut is threadedly connected to the outer side of the screw, a worm wheel is concentrically fixedly connected to the outer side of the nut, the worm wheel is meshingly connected to a worm, the worm is fixedly connected to the output shaft of the servo motor through a coupling, and the servo motor is fixedly connected to the outer side of the middle shell.

[0008] Furthermore, the upper shell is provided with an upper connecting cavity, which connects the upper through hole with the left through hole and the right through hole, and the lower connecting cavity connects the connecting pipe 2, the air inlet, the left through hole and the right through hole.

[0009] Furthermore, a limiting flange is provided at the upper end of the right through hole, a valve core assembly is provided in the right through hole, the valve core assembly includes an outer valve core, the upper end of the outer valve core is in sealing contact with the limiting flange, a plurality of air intake notches are evenly distributed on the outer periphery of the outer valve core, a large spring is sleeved on the outer side of the outer valve core, the upper end of the large spring is connected to the outer valve core, the lower end of the large spring is fixedly connected to the inner wall of the right through hole, a valve cavity is provided through the center of the outer valve core, a piston is slidably sealed in the valve cavity, a limiting orifice is provided at the upper end of the valve cavity, and the limiting orifice connects the valve cavity at the upper end of the piston with the upper connecting cavity.

[0010] Furthermore, a connecting rod is provided at the lower end of the piston, and a circular valve plate is provided at the other end of the connecting rod. The circular valve plate corresponds to the air inlet, and the circular valve plate moves to close and open the air inlet.

[0011] Furthermore, a small spring is sleeved on the outer side of the connecting rod, and the other end of the small spring is fixedly connected to the inner wall of the valve cavity, and the elastic force of the small spring is smaller than the elastic force of the large spring.

[0012] Furthermore, the solenoid valve model is AIV-50B-L.

[0013] The beneficial effect achieved by the utility model with the above structure is that the regulating component can regulate the exhaust pressure during startup, preventing the pressure in the exhaust pipe from being too high, causing impact on the exhaust pipe and the solenoid valve, and preventing the exhaust pressure from being too high or too low. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model from another perspective;

[0016] Figure 3 This is a schematic diagram of the internal structure of the adjustment component of the utility model;

[0017] Figure 4 This is a schematic diagram of the explosion structure of the adjustment component of the utility model;

[0018] Figure 5 Explosion structure schematic diagram of another perspective of the adjustment component of the present utility model;

[0019] Figure 6 Explosion structure schematic diagram of the valve core component of the present utility model;

[0020] Figure 7 Explosion structure schematic diagram of another perspective of the valve core component of the present utility model;

[0021] Figure 8 Sectional structure schematic diagram of the adjustment component of the present utility model.

[0022] Among them, 1 is the bottom plate, 11 is the air compressor, 12 is the intake pipe, 13 is the solenoid valve, 14 is the filter, and 15 is the outlet pipe;

[0023] 2 is the adjustment component, 21 is the first connecting pipe, 22 is the second connecting pipe, 23 is the air inlet, 24 is the servo motor, 241 is the coupling, 242 is the worm, 243 is the nut, 244 is the worm gear, 25 is the screw rod, 251 is the rectangular valve plate, and 2511 is the valve plate hole;

[0024] 26 is the upper housing, 261 is the upper connecting cavity, and 262 is the upper through hole;

[0025] 27 is the middle housing, 271 is the left through hole, 272 is the right through hole, 273 is the sliding groove, and 274 is the limiting flange;

[0026] 28 is the lower housing, and 281 is the lower connecting cavity;

[0027] 3 is the valve core component, 31 is the outer valve core, 311 is the valve cavity, 312 is the limiting orifice, 313 is the intake notch, 32 is the large spring, 33 is the piston, 331 is the connecting rod, 332 is the circular valve plate, and 34 is the small spring.

[0028] The attached drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] As Figure 1-8As shown in the figure, the utility model provides an air compressor intake air regulating device, which includes a bottom plate 1. An air compressor 11 is fixedly arranged on the bottom plate 1. The air compressor 11 includes an intake pipe 12 and an outlet pipe 15. A filter 14 and a solenoid valve 13 are sequentially arranged at the end of the intake pipe 12. The outlet pipe 15 is communicated with a first connecting pipe 21. The other end of the first connecting pipe 21 is communicated with a regulating component 2. The regulating component 2 is provided with a second connecting pipe 22. The second connecting pipe 22 is communicated with the intake pipe 12 between the solenoid valve 13 and the air compressor 11.

[0031] The regulating component 2 includes an upper shell 26, a middle shell 27 and a lower shell 28 which are fixedly connected in sequence. An upper through hole 262 is arranged on the left side of the upper shell 26. The upper through hole 262 is fixedly communicated with the first connecting pipe 21. A second connecting pipe 22 is arranged at the left end of the lower shell 28. An air inlet 23 is arranged at the right end of the lower shell 28. The air inlet 23 and the second connecting pipe 22 are communicated through a lower communication cavity 281.

[0032] The middle shell 27 includes a left through hole 271 and a right through hole 272. Both the left through hole 271 and the right through hole 272 penetrate through the middle shell 27. A sliding groove 273 is horizontally arranged at the upper end of the middle shell 27. A rectangular valve plate 251 is slidably and sealingly connected in the sliding groove 273. A valve plate hole 2511 is arranged at the right end of the rectangular valve plate 251.

[0033] Furthermore, a screw rod 25 is fixedly connected to the right end of the rectangular valve plate 251. A nut 243 is threadedly connected to the outer side of the screw rod 25. A worm gear 244 is concentrically and fixedly connected to the outer side of the nut 243. The worm gear 244 is meshed with a worm 242. The worm 242 is fixedly connected to the output shaft of a servo motor 24 through a coupling 241. The servo motor 24 is fixedly connected to the outer side of the middle shell 27.

[0034] During operation, the servo motor 24 drives the worm 242 to rotate. The worm 242 drives the worm gear 244 and the nut 243 to rotate through meshing. The rotation of the nut 243 drives the screw rod 25 and the rectangular valve plate 251 to slide in the sliding groove 273. When the rectangular valve plate 251 is at the leftmost end, the valve plate 251 closes the left through hole 271, and the valve plate hole 2511 is communicated with the right through hole 272, realizing the opening of the right through hole 272. When the rectangular valve plate 251 is at the rightmost end, the rectangular valve plate 251 disengages from the left through hole 271, the left through hole 271 is opened, the rectangular valve plate 251 closes the right through hole 272, and the right through hole 272 is closed.

[0035] Further, the upper housing 26 is provided with an upper communication cavity 261. The upper communication cavity 261 communicates the upper through hole 262 with the left through hole 271 and the right through hole 272. The lower communication cavity 281 communicates the second communication pipe 22, the air inlet 23, the left through hole 271, and the right through hole 272 with each other.

[0036] Further, referring to Figures 5-8 , a limiting flange 274 is provided at the upper end of the right through hole 272. A valve core assembly 3 is arranged in the right through hole 272. The valve core assembly 3 includes an outer valve core 31. The upper end of the outer valve core 31 is in sealing contact with the limiting flange 274. A plurality of air inlet notches 313 are evenly distributed on the outer periphery of the outer valve core 31. A large spring 32 is sleeved outside the outer valve core 31. The upper end of the large spring 32 is connected to the outer valve core 31. The lower end of the large spring 32 is fixedly connected to the inner wall of the right through hole 272. A valve cavity 311 is formed through the center of the outer valve core 31. A piston 33 is slidably sealed in the valve cavity 311. A limiting orifice 312 is provided at the upper end of the valve cavity 311. The limiting orifice 312 communicates the valve cavity 311 above the piston 33 with the upper communication cavity 261.

[0037] Further, a connecting rod 331 is provided at the lower end of the piston 33. The other end of the connecting rod 331 is provided with a circular valve plate 332. The circular valve plate 332 corresponds to the air inlet 23. The movement of the circular valve plate 332 realizes the closing and opening of the air inlet 23.

[0038] Further, a small spring 34 is sleeved outside the connecting rod 331. The other end of the small spring 34 is fixedly connected to the inner wall of the valve cavity 311. The elastic force of the small spring 34 is less than the elastic force of the large spring 32.

[0039] Further, the model of the solenoid valve 13 is AIV-50B-L.

[0040] The working process of the present application is shown in Figure 1 and Figure 8 . Before the air compressor 11 is started, the solenoid valve 13 is in an open state. The rectangular valve plate 351 is at the rightmost end. At this time, the left through hole 271 is in an open state, and the right through hole 272 is in a closed state. Then the air compressor 11 is started. The air compressor 11 drives the air to flow in the annular pipeline formed by the air inlet pipe 12, the air compressor 11, the air outlet pipe 15, the first communication pipe 21, the left through hole 271, and the second communication pipe 272. In this way, it can prevent the pressure in the air outlet pipe 15 from being too high when the air compressor 11 is started, causing impact on the air outlet pipe 15 and the solenoid valve 13.

[0041] Then, the servo motor 24 drives the rectangular valve plate 251 to slowly slide to the left, gradually closing the left through-hole 271 and opening the right through-hole 272. At this time, since the right through-hole 272 is blocked by the outer valve core 31, due to the exhaust pressure in the air outlet pipe 15, the driving piston 33 squeezes the small spring 34 and drives the circular valve plate 332 to approach and contact the air inlet 23, and the air inlet 23 is blocked.

[0042] At this time, the regulating assembly 2 is in a closed and disconnected state. The air flows through the filter 14, the solenoid valve 13, the air compressor 11, and the air outlet pipe 15 in the flow path. At this time, the air compressor 11 is in a normal working state. Since the regulating assembly 2 is gradually blocked by the rectangular valve plate 351, the air flow passing through the filter 14, the solenoid valve 13, the air compressor 11, and the air outlet pipe 15 gradually increases and finally works normally.

[0043] When the pressure in the air outlet pipe 15 is too high, that is, the exhaust pressure is too high, the air pressure drives the outer valve core 31 to squeeze the large spring 32, and the outer valve core 31 disengages from the limit flange 274. At this time, the right through-hole 272 is opened, and the gas will flow through the air outlet pipe 15 to the first connecting pipe 21, then through the through-hole 272, the lower connecting cavity 281, the second connecting pipe 22, the air inlet pipe 12, the air compressor 11, and the air outlet pipe 15 to realize circular flow. Thereby reducing the exhaust pressure and preventing the exhaust pressure from being too high, and the elastic force of the large spring 32 limits the maximum exhaust pressure.

[0044] When the exhaust pressure is too low, the pressure in the air outlet pipe 15 decreases. At this time, the pressure borne by the piston 33 decreases, and the small spring 34 drives the piston 33 to move towards the limit orifice 312, thereby driving the circular valve plate 332 to disengage from the air inlet 23, and the air inlet 23 is opened. At this time, air directly enters the lower connecting cavity 281, the second connecting pipe 22, the air inlet pipe 12, and the air compressor 11 from the air inlet 23, thereby increasing the cross-sectional area of the air inlet channel, thereby increasing the air intake and increasing the exhaust pressure of the air outlet pipe 15. The elastic force of the small dry spring 34 limits the minimum exhaust pressure of the air outlet pipe 15.

[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air compressor air intake regulating device, comprising a base plate (1), an air compressor (11) being fixedly mounted on the base plate (1), the air compressor (11) comprising an air intake pipe (12) and an air outlet pipe (15), a filter (14) and a solenoid valve (13) being sequentially mounted at the end of the air intake pipe (12), characterized in that: The outlet pipe (15) is connected to a connecting pipe 1 (21), the other end of the connecting pipe 1 (21) is connected to an adjusting component (2), the adjusting component (2) is provided with a connecting pipe 2 (22), and the connecting pipe 2 (22) is connected to an air inlet pipe (12) between the solenoid valve (13) and the air compressor (11); The regulating assembly (2) comprises an upper shell (26), a middle shell (27) and a lower shell (28) which are fixedly connected in sequence, an upper through hole (262) is arranged on the left side of the upper shell (26), and the upper through hole (262) is fixedly connected to the first connecting pipe (21), a second connecting pipe (22) is arranged on the left end of the lower shell (28), and an air inlet (23) is arranged on the right end of the lower shell (28), and the air inlet (23) and the second connecting pipe (22) are connected through a lower connecting chamber (281); The middle shell (27) comprises a left through hole (271) and a right through hole (272), and the left through hole (271) and the right through hole (272) both pass through the middle shell (27). A slide groove (273) is transversely arranged at the upper end of the middle shell (27), and a rectangular valve plate (251) is slidably and sealably connected in the slide groove (273). A valve plate hole (2511) is arranged at the right end of the rectangular valve plate (251).

2. The air compressor intake regulating device according to claim 1, characterized in that: The right end of the rectangular valve plate (251) is fixedly connected to a screw rod (25), the outer side of the screw rod (25) is threadedly connected to a nut (243), the outer side of the nut (243) is coaxially fixedly connected to a worm wheel (244), the worm wheel (244) is meshingly connected to a worm (242), the worm (242) is fixedly connected to the output shaft of a servo motor (24) via a coupling (241), and the servo motor (24) is fixedly connected to the outer side of the middle housing (27).

3. The air compressor intake regulating device according to claim 2, characterized in that: The upper shell (26) is provided with an upper connecting cavity (261), wherein the upper connecting cavity (261) connects the upper through hole (262) with the left through hole (271) and the right through hole (272), and the lower connecting cavity (281) connects the connecting pipe 2 (22), the air inlet (23), the left through hole (271) and the right through hole (272).

4. The air compressor intake regulating device according to claim 3, characterized in that: A limiting flange (274) is arranged at the upper end of the right through hole (272), a valve core assembly (3) is arranged in the right through hole (272), the valve core assembly (3) comprises an outer valve core (31), the upper end of the outer valve core (31) is in sealing contact with the limiting flange (274), a plurality of air inlet notches (313) are evenly distributed around the outer circumference of the outer valve core (31), a large spring (32) is sleeved on the outer side of the outer valve core (31), the upper end of the large spring (32) is in sealing contact with the outer valve core (31), and the upper end of the large spring (32) is in sealing contact with the outer valve core (31). The outer valve core (31) is connected, the lower end of the large spring (32) is fixedly connected to the inner wall of the right through hole (272), the center of the outer valve core (31) is provided with a valve cavity (311), a piston (33) is slidably sealed in the valve cavity (311), and a limiting orifice (312) is provided at the upper end of the valve cavity (311), and the limiting orifice (312) connects the valve cavity (311) at the upper end of the piston (33) with the upper connecting cavity (261).

5. The air compressor intake regulating device according to claim 4, characterized in that: A connecting rod (331) is provided at the lower end of the piston (33), and a circular valve plate (332) is provided at the other end of the connecting rod (331). The circular valve plate (332) corresponds to the air inlet (23), and the circular valve plate (332) moves to close and open the air inlet (23).

6. The air compressor intake regulating device according to claim 5, characterized in that: A small spring (34) is sleeved on the outside of the connecting rod (331), and the other end of the small spring (34) is fixedly connected to the inner wall of the valve cavity (311), and the elastic force of the small spring (34) is smaller than the elastic force of the large spring (32).

7. An air compressor intake regulating device according to any one of claims 1 to 6, characterized in that: The model of the solenoid valve (13) is AIV-50B-L.

Images