CN209324618U - A kind of air compressor machine minimum pressure valve - Google Patents

Abstract

The utility model discloses a kind of air compressor machine minimum pressure valves, including upper valve body, lower valve body, spool, valve core spring, piston, piston spring and adjusting screw, lower valve body is equipped with air inlet and exhaust outlet, valve chamber is equipped in upper valve body, piston and adjusting screw are located at the both ends of valve chamber, piston spring is between piston and adjusting screw, spool one end and air inlet close fit, the spool other end is abutted by valve core spring with piston elasticity, the side of spool and air inlet sealing cooperation is equipped with silencing means, silencing means includes shell, acoustical panel, pod and hush pipe, shell is fixedly connected with spool, shell is in hollow setting, acoustical panel, pod and hush pipe are respectively positioned on the inside of shell, pod is equipped with venthole, it is fixedly connected at hush pipe and the venthole of pod, through-hole is provided on hush pipe.The utility model can be effectively reduced gas shock and the noise that generates, significantly improve the noise reduction effect of pressure valve by setting silencing means.

Description

A kind of air compressor machine minimum pressure valve

Technical field

The utility model relates to valve technology field, in particular to a kind of air compressor machine minimum pressure valve.

Background technique

Minimum pressure valve is the necessary parts of air compressor machine, and the effect of minimum pressure valve is not right immediately after air compressor machine starting Outer gas supply, but initially set up circulating pressure needed for lubricating fluid, it is ensured that the lubrication of compressor, when gas pressure reaches setting When pressure, minimum pressure valve is just opened, and is supplied outward, otherwise minimum pressure valve is in close state.Engine oil is by machine The pressure difference of device itself carries out, not additional oil pump auxiliary, when machine is in light condition, it is still necessary to which certain pressure maintains oil Circulation, so air intake valve is relatively closed, and minimum pressure valve prevents pressure leakages, guarantees the circulation of lubricating oil in this way.It is minimum Pressure valve mainly acts the effects of establishing unit internal pressure, promoting lubrication oil circulation, meet the operating pressure of easing valve, minimum pressure valve Also play check valve, prevent compressed air of the unit when unloading operation in air accumulator from flowing backward to air compressor machine.

However minimum pressure valve is when in use, the gas that air inlet enters can be impacted with spool air inlet, generate biggish make an uproar Sound influences the usage experience of user.

Summary of the invention

In view of the deficiencies of the prior art and defect, a kind of air compressor machine minimum pressure valve is provided, passes through setting silencing means, energy The noise that gas shock enough is effectively reduced and generates significantly improves the noise reduction effect of pressure valve.

To achieve the above object, the utility model provides following technical scheme.

A kind of air compressor machine minimum pressure valve, including upper valve body, lower valve body, spool, valve core spring, piston, piston spring and Adjusting screw, lower valve body are equipped with air inlet and exhaust outlet, are equipped with valve chamber in upper valve body, piston and adjusting screw are located at valve chamber Both ends, for piston spring between piston and adjusting screw, spool one end and air inlet close fit, the spool other end pass through valve Core spring is abutted with piston elasticity, spool and air inlet sealing cooperation side be equipped with silencing means, silencing means include shell, Acoustical panel, pod and hush pipe, shell are fixedly connected with spool, and shell is in hollow setting, acoustical panel, pod and hush pipe It is respectively positioned on the inside of shell, pod is equipped with venthole, is fixedly connected at hush pipe and the venthole of pod, hush pipe Surface is provided with through-hole.

Further, acoustical panel includes the first acoustical panel and the second acoustical panel, and the first acoustical panel is fixed on inside pod, Second acoustical panel is fixed on above hush pipe, is provided with bloop on the first acoustical panel and the second acoustical panel.

Further, the first acoustical panel and the second acoustical panel have glass wool material to be made respectively.

Further, the diameter of bloop is less than 1mm, and the thickness of the first acoustical panel and the second acoustical panel be respectively 1~ 1.5mm。

Further, spool is T-shaped, and one end of spool and air inlet cooperation is equipped with sealing ring, the spool other end and piston It is mating.

Further, the mating end of spool and piston is respectively equipped with accommodation groove, and two accommodation grooves are constituted for placing The accommodating cavity of valve core spring, the both ends of valve core spring are abutted with the slot bottom of two accommodation grooves respectively.

Further, adjusting screw is threadedly coupled with upper valve body, and upper valve body is equipped with the tightening for secured adjusted screw Screw.

Further, upper valve body and lower valve body are made up of aluminium respectively.

The utility model has the following beneficial effects: the intake valve of the utility model, in use, inlet charge, gas is first passed through Pod, hush pipe enter in shell, and for gas when by pod, gas can be carried out buffering water conservancy diversion by pod, to subtract The impact force of small gas, and then reduce noise, when gas enters hush pipe, by hush pipe by the flow resistance of gas discharge process and Noise absorbent caused by gas reduces noise, and gas pushes spool compression valve core spring mobile again, thus by air inlet Mouthful be connected between exhaust outlet, the utility model of simple structure and strong practicability, by be arranged silencing means, can be effectively reduced Gas shock and the noise generated, significantly improve the noise reduction effect of pressure valve.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model.

In figure, 1. upper valve bodies；2. lower valve body；3. valve chamber；4. air inlet；5. exhaust outlet；6. spool；7. valve core spring；8. Piston；9. piston spring；10. adjusting screw；11. shell；12. the first acoustical panel；13. the second acoustical panel；14. pod；15. Hush pipe；16. through-hole；17. sealing ring；18. accommodating cavity；19. holding screw.

Specific embodiment

The utility model is further illustrated in conjunction with attached drawing.

A kind of air compressor machine minimum pressure valve shown in Figure 1, including upper valve body 1, lower valve body 2, spool 6, valve core spring 7, piston 8, piston spring 9 and adjusting screw 10, upper valve body 1 and lower valve body 2 are connected through a screw thread, and upper valve body 1 and lower valve Body 2 is made up of aluminium respectively, so that pressure valve weight is lighter, intensity is more preferable, and lower valve body 2 is equipped with air inlet 4 and exhaust outlet 5, upper valve body 1 is interior to be equipped with valve chamber 3, and piston 8 and adjusting screw 10 are located at the both ends of valve chamber 3, and piston spring 9 is located at piston 8 and adjusts It saves between screw 10,6 one end of spool and 4 close fit of air inlet, 6 other end of spool are supported by valve core spring 7 and 8 elasticity of piston It connects, spool 6 is T-shaped, and one end that spool 6 and air inlet 4 cooperate is equipped with sealing ring 17, and to guarantee that leakproofness is good, spool 6 is another End is mating with piston 8, and the mating end of spool 6 and piston 8 is respectively equipped with accommodation groove, and two accommodation grooves are constituted for putting The accommodating cavity 18 of valve core spring 7 is set, the both ends of valve core spring 7 are abutted with the slot bottom of two accommodation grooves respectively, the accommodating on piston 8 Slot can play guiding role when spool 6 is mobile, so that the motion track of limit spool 6, so that the movement of spool 6 is more steady It is fixed.

The side of spool 6 and the sealing cooperation of air inlet 4 is equipped with silencing means, and silencing means includes shell 11, acoustical panel, leads Stream cover 14 and hush pipe 15, shell 11 are fixedly connected with spool 6, and shell 11 is in hollow setting, acoustical panel, pod 14 and noise reduction Cylinder 15 is respectively positioned on the inside of shell 11, and pod 14 is equipped with venthole, fixes at hush pipe 15 and the venthole of pod 14 Connection, the surface of hush pipe 15 is provided with through-hole 16.Acoustical panel includes the first acoustical panel 12 and the second acoustical panel 13, the first noise reduction Plate 12 is fixed on inside pod 14, and the second acoustical panel 13 is fixed on 15 top of hush pipe, the first acoustical panel 12 and the second noise reduction Bloop is provided on plate 13.

The intake valve of the utility model, in use, 4 air inlet of air inlet, gas first enters shell through pod 14, hush pipe 15 In body 11, for gas when by pod 14, gas can be carried out buffering water conservancy diversion by pod 14, to reduce the impact of gas Power, and then reduce noise, gas enters after hush pipe 15 again via through holes 16 and is discharged, by hush pipe 15 by gas discharge process Noise absorbent caused by flow resistance and gas reduces noise, and the first acoustical panel 12 is fixed on inside pod 14, Second acoustical panel 13 is fixed on 15 top of hush pipe, is provided with bloop, gas on the first acoustical panel 12 and the second acoustical panel 13 Body can first pass through the first acoustical panel 12 when by pod 14, and gas via through holes 16 can pass through the second acoustical panel 13 after being discharged It acting on spool 6, the design of the first acoustical panel 12 and the second acoustical panel 13 can play dual erasure effect, so that The erasure effect of silencing means is more preferable, is provided with bloop on the first acoustical panel 12 and the second acoustical panel 13, bloop is uniform Be distributed on the first acoustical panel 12 and the second acoustical panel 13, the diameter of bloop is less than 1mm, and acoustical panel with a thickness of 1~ 1.5mm reduces noise, simultaneously by noise absorbent caused by flow resistance and gas of the bloop by gas discharge process The size of the diameter of bloop and the thickness size of acoustical panel are controlled, so that the sound-absorbing effect of acoustical panel is more preferable, the first acoustical panel 12 and second acoustical panel 13 there is glass wool material to be made respectively, glass wool material production acoustical panel good muffling effect, and The satisfactory mechanical property of mineral wool, it is easy for installation, it is cheap, cost has been saved, the service life of acoustical panel is extended.This reality It is simple with new structure, it is practical, by the way that silencing means is arranged, it can be effectively reduced gas shock and the noise that generates, show Write the noise reduction effect for improving pressure valve.

After gas acts on spool 6, when air pressure is less than specified pressure, spool 6 is in valve core spring 7 and piston spring 9 Resilient force under with 4 close fit of air inlet, blocked between air inlet 4 and exhaust outlet 5；When air pressure reaches specified pressure When, push spool 6 mobile to 8 end of piston, thus by being connected between air inlet 4 and exhaust outlet 5.

Further, adjusting screw 10 is threadedly coupled with upper valve body 1, and upper valve body 1, which is equipped with, is used for secured adjusted screw 10 Holding screw 19, the installation site of piston spring 9 is adjusted by adjusting screw 10, so as to adjust the pretightning force of piston spring 9, Required gas pressure when spool 6 is opened can be customized according to client's diversity requirement, can with it is lower manufacture at The diversification production of this realization product.

The above description is only a preferred embodiment of the present invention, therefore all according to described in the utility model patent application range The equivalent change or modification done of structure, feature and principle, be included in the scope of the utility model patent application.

Claims (8)

1. a kind of air compressor machine minimum pressure valve, including upper valve body (1), lower valve body (2), spool (6), valve core spring (7), piston (8), piston spring (9) and adjusting screw (10), it is characterised in that: lower valve body (2) is equipped with air inlet (4) and exhaust outlet (5), Valve chamber (3) are equipped in upper valve body (1), piston (8) and adjusting screw (10) are located at the both ends of valve chamber (3), and piston spring (9) is located at Between piston (8) and adjusting screw (10), spool (6) one end and air inlet (4) close fit, spool (6) other end pass through valve Core spring (7) is abutted with piston (8) elasticity, and the side of spool (6) and air inlet (4) sealing cooperation is equipped with silencing means, noise reduction Device includes shell (11), acoustical panel, pod (14) and hush pipe (15), and shell (11) is fixedly connected with spool (6), shell It (11) is in hollow setting, acoustical panel, pod (14) and hush pipe (15) are respectively positioned on the inside of shell (11), on pod (14) Equipped with venthole, it is fixedly connected at hush pipe (15) and the venthole of pod (14), the surface of hush pipe (15) is provided with logical Hole (16).

2. a kind of air compressor machine minimum pressure valve according to claim 1, it is characterised in that: acoustical panel includes the first acoustical panel (12) and the second acoustical panel (13), the first acoustical panel (12) are fixed on pod (14) inside, and the second acoustical panel (13) is fixed on Above hush pipe (15), bloop is provided on the first acoustical panel (12) and the second acoustical panel (13).

3. a kind of air compressor machine minimum pressure valve according to claim 2, it is characterised in that: the first acoustical panel (12) and second Acoustical panel (13) has glass wool material to be made respectively.

4. a kind of air compressor machine minimum pressure valve according to claim 2, it is characterised in that: the diameter of bloop is less than 1mm, And first the thickness of acoustical panel (12) and the second acoustical panel (13) be respectively 1~1.5mm.

5. a kind of air compressor machine minimum pressure valve according to claim 1, it is characterised in that: spool (6) is T-shaped, spool (6) Sealing ring (17) are equipped with one end of air inlet (4) cooperation, spool (6) other end and piston (8) are mating.

6. a kind of air compressor machine minimum pressure valve according to claim 5, it is characterised in that: spool (6) and piston (8) are inserted It connects abutting end and is respectively equipped with accommodation groove, two accommodation grooves constitute the accommodating cavity (18) for placing valve core spring (7), valve core spring (7) both ends are abutted with the slot bottom of two accommodation grooves respectively.

7. a kind of air compressor machine minimum pressure valve according to claim 1, it is characterised in that: adjusting screw (10) and upper valve body (1) it is threadedly coupled, upper valve body (1) is equipped with the holding screw (19) for secured adjusted screw (10).

8. a kind of air compressor machine minimum pressure valve according to claim 1, it is characterised in that: upper valve body (1) and lower valve body (2) It is made up respectively of aluminium.