Combined air inlet valve with air path switching function and air compressor

Abstract

The utility model provides a combined air inlet valve and an air compressor with an air path switching function, the combined air inlet valve comprises an air inlet valve, the air inlet valve comprises a butterfly plate arranged in a valve body of the air inlet valve, the butterfly plate is sleeved on a butterfly plate shaft, the middle part of the butterfly plate shaft is provided with an axial hole, the length direction of the butterfly plate shaft is provided with a radial hole, the butterfly plate is provided with a butterfly plate air hole, and the radial hole is provided with a radial hole; the radial hole, the axial hole and the butterfly plate air hole are communicated; a valve body of the emptying valve is fixedly connected with a valve body of the air inlet valve; the gas circuit switching mechanism comprises an oil cylinder, a shaft sleeve seat and a shaft sleeve, the shaft sleeve seat is arranged on the valve body of the gas inlet valve, the shaft sleeve seat fixes the shaft sleeve, the shaft sleeve is arranged at the radial hole of the butterfly plate shaft, the shaft sleeve is connected with a piston of the emptying valve through a gas pipe, one end of the butterfly plate shaft is connected with the oil cylinder, and the oil cylinder controls the butterfly plate shaft to rotate so as to achieve alignment or staggering of the radial hole and a hole in the shaft sleeve. High-temperature gas of the air release valve can be prevented from influencing the air inlet valve, rapid air release opening of the air release valve is achieved, and the working efficiency of the air release valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressor equipment, and in particular to a combined air intake valve with an air path switching function and an air compressor. Background Art

[0002] Air compressors are used more and more widely in the field of modern manufacturing engineering technology. As the main component of air compressors, the intake valve has functions such as intake control, loading and unloading control, capacity adjustment control, unloading, and preventing oil injection during unloading or shutdown.

[0003] As air compressors are increasingly used in various industries, the types of air compressors are constantly being updated and improved, and the types of intake valves that match them are also increasing.

[0004] At present, the intake valves on the market all adopt the form of integrated linkage of intake and vent valves. The high-temperature gas at the vent valve has a certain impact on other parts of the intake valve, and the vent valve piston is directly controlled by the air cylinder or oil cylinder, and the working efficiency of the vent valve is relatively low. Utility Model Content

[0005] In view of the defects in the prior art, the purpose of the utility model is to provide a combined air intake valve and an air compressor with an air path switching function.

[0006] The utility model is realized by the following technical solutions:

[0007] In one aspect of the utility model, a combined air intake valve with an air path switching function is provided, comprising:

[0008] An air intake valve, comprising a butterfly plate arranged inside a valve body of the air intake valve, the butterfly plate being sleeved on a butterfly plate shaft, the butterfly plate shaft being provided with an axial hole in the middle and radial holes in the length direction, the butterfly plate being provided with a butterfly plate air hole, the radial hole, the axial hole and the butterfly plate air hole being in communication;

[0009] A vent valve, the valve body of the vent valve is fixedly connected to the valve body of the intake valve;

[0010] An air circuit switching mechanism, the air circuit switching mechanism includes an oil cylinder, a sleeve seat and a sleeve, the sleeve seat is fixed to the outside of the valve body of the intake valve, the sleeve is arranged inside the sleeve seat, a hole is provided on the sleeve, the end of the butterfly plate shaft passes through the sleeve, the sleeve is connected to the piston of the vent valve through an air pipe, the end of the butterfly plate shaft is connected to the oil cylinder, the oil cylinder controls the rotation of the butterfly plate shaft to achieve alignment or staggered alignment of the radial hole with the hole on the sleeve.

[0011] Furthermore, the valve body of the air intake valve is fixedly connected to the valve body of the exhaust valve via a flange.

[0012] Furthermore, the gas path switching mechanism also includes a cylinder fixing plate, the cylinder fixing plate is connected to the outside of the valve body of the intake valve, a cylinder bracket is provided on the cylinder fixing plate, and the cylinder is fixed on the cylinder bracket.

[0013] Furthermore, the butterfly plate shaft is connected to the oil cylinder through a lever and a fisheye joint, and is fixed by a locking screw.

[0014] Furthermore, a butterfly plate clearance adjusting screw for adjusting the opening clearance of the butterfly plate is provided on the side of the lever, and one end of the butterfly plate clearance adjusting screw is pressed against the cylinder bracket when the oil cylinder is closed.

[0015] Furthermore, one end of the butterfly plate shaft is fixed to the butterfly plate by glue and is installed on the valve body of the intake valve by a bearing.

[0016] Furthermore, a joint is provided on the shaft sleeve seat, and one end of the joint is pressed against the shaft sleeve so that the shaft sleeve cannot rotate.

[0017] Furthermore, an air pipe joint is provided at one end of the air pipe away from the vent valve, and the air pipe joint is installed on the joint.

[0018] According to another aspect of the utility model, an air compressor is provided, and the air compressor includes the above-mentioned combined air intake valve with air path switching function.

[0019] Compared with the prior art, the utility model has at least one of the following beneficial effects:

[0020] The combined air intake valve and air compressor provided by the utility model can isolate the high-temperature gas at the vent valve and avoid the influence of the high-temperature gas on the intake valve through the separate design structure of the vent valve and the intake valve; an air path switching mechanism is provided on the intake valve to connect the vent valve, the vent valve can be controlled separately through the air path switching mechanism, and the vent valve can be quickly opened for air release, thereby improving the working efficiency of the vent valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a combined air intake valve with an air path switching function in one embodiment of the utility model;

[0023] Figure 2 It is a front view schematic diagram of a combined air intake valve with an air path switching function in one embodiment of the utility model;

[0024] Figure 3It is a cross-sectional schematic diagram of a combined air intake valve with an air path switching function in one embodiment of the utility model;

[0025] Figure 4 It is a top view schematic diagram of a combined air intake valve with an air path switching function in one embodiment of the utility model.

[0026] In the figure: 01 is the intake valve, 02 is the vent valve, 1 is the valve body of the intake valve, 2 is the butterfly plate, 201 is the butterfly plate air hole, 3 is the butterfly plate shaft, 4 is the bearing, 5 is the joint, 6 is the locking nut, 7 is the O-ring, 8 is the shaft sleeve, 9 is the small bearing, 10 is the shaft sleeve seat, 11 is the shaft sleeve seat fixing screw, 12 is the air pipe joint, 13 is the lever, 14 is the locking screw, 15 is the butterfly plate clearance adjustment screw, 16 is the fisheye joint, 17 is the oil cylinder fixing plate, 18 is the air pipe, 19 is the oil cylinder, 20 is the oil cylinder bracket, and 21 is the lifting hole. DETAILED DESCRIPTION

[0027] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the utility model. These all fall within the scope of protection of the utility model.

[0028] Reference Figure 1-Figure 4, a combined air intake valve with an air path switching function provided by an embodiment of the utility model comprises an air intake valve 01, a vent valve 02 and an air path switching mechanism, wherein: the air intake valve 01 comprises a butterfly plate 2 arranged inside a valve body 1 of the air intake valve, the butterfly plate 2 is sleeved on a butterfly plate shaft 3, the butterfly plate shaft 3 is provided with an axial hole in the middle, and radial holes in the length direction, the radial holes are connected with the axial holes, a butterfly plate air hole 201 is provided on the butterfly plate 2, the butterfly plate air hole 201 is connected to the atmosphere, and the axial hole, the radial hole and the butterfly plate air hole 201 are connected with each other; the valve body of the vent valve 02 is fixedly connected to the valve body 1 of the air intake valve, and the vent valve 02 is connected to the valve body 1 of the air intake valve. The valve 02 and the intake valve 01 are designed with separate structures to achieve the purpose of isolating high temperature; the air circuit switching mechanism includes an oil cylinder 19, a sleeve seat 10 and a sleeve 8, the sleeve seat 10 is fixed to the outside of the valve body 1 of the intake valve, the sleeve 8 is arranged inside the sleeve seat 10, and the sleeve 8 is provided with a hole, the end of the butterfly plate shaft 3 passes through the sleeve 8, and the radial hole on the butterfly plate shaft 3 is basically aligned with the hole on the sleeve 8 during installation, the sleeve 8 is connected to the piston of the vent valve 02 through the air pipe 18, and the end of the butterfly plate shaft 3 is connected to the oil cylinder 19, and the oil cylinder 19 controls the rotation of the butterfly plate shaft 3 to achieve alignment or staggered alignment of the radial hole with the hole on the sleeve 8. The air circuit switching mechanism is arranged at the outer end of the butterfly plate shaft 3 of the intake valve 01, one end of which is connected to the piston of the vent valve 02 through the air pipe 18, and the other end is connected to the atmosphere through the radial holes, axial holes and butterfly plate air holes 201 on the butterfly plate shaft 3. The air circuit switching mechanism is arranged on the intake valve 01, and the opening and closing of the air circuit is controlled by the rotation of the butterfly plate shaft 3, so that the vent valve 02 can be controlled individually and opened for rapid deflation.

[0029] In order to achieve a stable connection between the vent valve 02 and the intake valve 01, in some embodiments, the valve body 1 of the intake valve is fixedly connected to the valve body of the vent valve by a flange, and the valve body 1 of the intake valve and the valve body of the vent valve can be made of different materials, which can greatly reduce heat conduction, so that the high temperature at the vent valve 02 will not affect other parts of the intake valve. In some other embodiments, the vent valve 02 and the intake valve 01 can be installed separately at different positions of the air compressor and controlled through a longer air pipe.

[0030] In order to control the rotation of the butterfly plate shaft 3, in some embodiments, when the cylinder 19 is fully opened, the butterfly plate 2 can be rotated about 80°, and the air intake volume of the intake valve 01 can reach the maximum; the opening pressure and full opening pressure of the cylinder 19 can be designed and changed according to actual requirements.

[0031] In some embodiments, the gas circuit switching mechanism also includes a cylinder fixing plate 17 for fixing the cylinder 19. The cylinder fixing plate 17 is connected to the outside of the valve body 1 of the air intake valve. A cylinder bracket 20 is provided on the cylinder fixing plate 17. The cylinder 19 is fixed on the cylinder bracket 20. The cylinder 19 is supported by the cylinder bracket 20 to ensure that the cylinder 19 remains stable during operation.

[0032] In some embodiments, the butterfly plate shaft 3 is connected to the oil cylinder 19 through the lever 13 and the fisheye joint 16, and is fixed by the locking screw 14. Specifically, one end of the lever 13 is connected to the butterfly plate shaft 3 and is locked and fixed by the locking screw 14; the other end of the lever 13 is connected to the fisheye joint 16 through a short shaft, the short shaft is fixed to the lever 3, and an elastic retaining ring is used to prevent the fisheye joint 16 from falling off. This connection structure enables the butterfly plate shaft 3 to rotate more flexibly under the control of the oil cylinder 19. Under load, the time from opening to fully opening of the butterfly plate 2 is no more than 4 seconds.

[0033] The rotation of the butterfly plate shaft 3 is controlled by the oil cylinder 19, and the rotation of the butterfly plate shaft 3 drives the butterfly plate 2 to open and close. When the butterfly plate 2 is opened, there is a gap between it and the inner wall of the intake valve body. The opening gap of the butterfly plate 2 is as follows: Figure 2 As shown in S, when the opening clearance S of the butterfly plate 2 is 0, the intake valve 01 is completely closed, and the gas cannot enter the air compressor through the intake valve 01; by setting the opening clearance S of the butterfly plate 2, the initial air intake of the air compressor can be controlled by the size of the opening clearance S of the butterfly plate 2. In some embodiments, a butterfly plate clearance adjustment screw 15 is provided at the lever 13, and the butterfly plate clearance adjustment screw 15 is used to adjust the opening clearance of the butterfly plate 2. Specifically, the butterfly plate clearance adjustment screw 15 is installed on the side of the lever 13. When the oil cylinder 19 is closed, one end of the butterfly plate clearance adjustment screw 15 is against the oil cylinder bracket 20. By adjusting the length of the extension, the angle of the initial position of the lever 13 is adjusted, and then the lever 13 drives the butterfly plate shaft 3 to rotate a certain angle to control the size of the opening clearance S of the butterfly plate 2, so that the butterfly plate 2 cannot be completely closed, and the initial air intake of the intake valve 01 is ensured to meet the needs of the air compressor.

[0034] In some embodiments, one end of the butterfly plate shaft 3 is fixed to the butterfly plate 2 by glue and installed on the valve body 1 of the intake valve through a bearing 4 to facilitate the rotation of the butterfly plate shaft 3, and the other end of the butterfly plate shaft 3 is fixed to the lever 13 by a locking screw 14.

[0035] In some embodiments, the sleeve 8 is fixed to the valve body 1 of the intake valve through the sleeve seat 10, and the sleeve seat 10 is fixed by the sleeve seat fixing screw 11. A small bearing 9 is provided on the sleeve seat 10, and the small bearing 9 is used to support the butterfly plate shaft 3 and prevent dust from entering the sleeve seat 10.

[0036] In some embodiments, a joint 5 is provided on the sleeve seat 10, and one end of the joint 5 is pressed against the sleeve 8, so that the sleeve 8 cannot rotate. The air hole on the butterfly plate shaft 3 leads to the air pipe 18 through the sleeve 8 and the joint 5. The joint 5 is locked by a locking nut 6 to prevent the joint 5 from loosening. An O-ring 7 is provided between the joint 5 and the sleeve 8 to prevent gas leakage.

[0037] In some embodiments, an air pipe connector 12 is provided at one end of the air pipe 18 away from the vent valve 02 , and the air pipe connector 12 is mounted on the connector 5 .

[0038] To facilitate valve installation, in some embodiments, a hole is opened on the top of the valve body 1 of the intake valve to form a lifting hole 21. When installing, repairing, replacing or moving the valve, the valve can be conveniently lifted using lifting equipment through the lifting hole 21.

[0039] Continue to refer to Figure 1-Figure 4 The combined air intake valve in the above embodiment of the utility model has the following working process:

[0040] When the oil cylinder 19 is turned on, it drives the butterfly plate shaft 3 to rotate, so that the butterfly plate 2 is opened. Specifically, the oil cylinder 19 drives the lever 13 to rotate counterclockwise, and the lever 13 drives the butterfly plate shaft 3 to rotate, so that the butterfly plate 2 is opened. At this time, the radial holes on the butterfly plate shaft 3 and the holes on the sleeve 8 are misaligned, and the air path between the butterfly plate air hole 201 and the vent valve 02 is blocked. After the vent valve 02 control end is inflated, the vent valve 02 is closed.

[0041] When the oil cylinder 19 is closed, it drives the butterfly plate shaft 3 to rotate, so that the butterfly plate 2 is closed. Specifically, the oil cylinder 19 drives the lever 13 to rotate clockwise, and the lever 13 drives the butterfly plate shaft 3 to rotate and reset, and the butterfly plate 2 is closed. At this time, the radial hole on the butterfly plate shaft 3 is aligned with the hole on the sleeve 8, the butterfly plate air hole 201 is connected with the air path of the vent valve 02, and the air at the control end of the vent valve 02 is discharged from the butterfly plate air hole 201, and the vent valve 02 is opened.

[0042] The above is the entire process of gas circuit switching. By opening and closing the oil cylinder 19, the closing and opening of the vent valve 02 can be quickly achieved.

[0043] Another embodiment of the utility model provides an air compressor, which includes the above-mentioned combined air intake valve with air path switching function. Due to the above-mentioned technical effects of the combined air intake valve, the air compressor also has the same technical effects, which will not be repeated here.

[0044] The combined air intake valve and air compressor provided in the above-mentioned embodiments of the utility model can isolate the high-temperature gas at the vent valve and avoid its influence on the intake valve through the separate design structure of the vent valve and the intake valve; an air circuit switching mechanism is provided on the intake valve to connect the vent valve, the vent valve can be controlled separately through the air circuit switching mechanism, and the vent valve can be quickly opened for air release, thereby improving the working efficiency of the vent valve.

[0045] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various modifications or variations within the scope of the claims, which does not affect the essence of the present invention.

Claims

1. A combined air intake valve with air path switching function, characterized in that: include: An air intake valve, comprising a butterfly plate arranged inside a valve body of the air intake valve, the butterfly plate being sleeved on a butterfly plate shaft, the butterfly plate shaft being provided with an axial hole in the middle and radial holes in the length direction, the butterfly plate being provided with a butterfly plate air hole, the radial hole, the axial hole and the butterfly plate air hole being in communication; A vent valve, the valve body of the vent valve is fixedly connected to the valve body of the intake valve; An air circuit switching mechanism, the air circuit switching mechanism includes an oil cylinder, a sleeve seat and a sleeve, the sleeve seat is fixed to the outside of the valve body of the intake valve, the sleeve is arranged inside the sleeve seat, a hole is provided on the sleeve, the end of the butterfly plate shaft passes through the sleeve, the sleeve is connected to the piston of the vent valve through an air pipe, the end of the butterfly plate shaft is connected to the oil cylinder, the oil cylinder controls the rotation of the butterfly plate shaft to achieve alignment or staggered alignment of the radial hole with the hole on the sleeve.

2. The combined air intake valve with air path switching function according to claim 1, characterized in that: The valve body of the air intake valve is fixedly connected to the valve body of the exhaust valve via a flange.

3. The combined air intake valve with air path switching function according to claim 1, characterized in that: The gas path switching mechanism also includes a cylinder fixing plate, which is connected to the outside of the valve body of the air intake valve. A cylinder bracket is provided on the cylinder fixing plate, and the cylinder is fixed on the cylinder bracket.

4. The combined air intake valve with air path switching function according to claim 3, characterized in that: The butterfly plate shaft is connected to the oil cylinder through a lever and a fisheye joint and is fixed by a locking screw.

5. The combined air intake valve with air path switching function according to claim 4, characterized in that: A butterfly plate clearance adjusting screw for adjusting the opening clearance of the butterfly plate is arranged on the side of the lever, and one end of the butterfly plate clearance adjusting screw is pressed against the oil cylinder bracket when the oil cylinder is closed.

6. The combined air intake valve with air path switching function according to claim 1, characterized in that: One end of the butterfly plate shaft is fixed to the butterfly plate by glue and is installed on the valve body of the intake valve by a bearing.

7. The combined air intake valve with air path switching function according to claim 1, characterized in that: A joint is arranged on the shaft sleeve seat, and one end of the joint is pressed against the shaft sleeve so that the shaft sleeve cannot rotate.

8. The combined air intake valve with air path switching function according to claim 7, characterized in that: An end of the air pipe away from the vent valve is provided with an air pipe joint, and the air pipe joint is installed on the joint.

9. An air compressor, characterized in that: It comprises the combined air intake valve with air path switching function as described in any one of claims 1 to 8.

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