Machine head assembly of air compressor

Abstract

The utility model provides a machine head assembly of an air compressor, which belongs to the technical field of air compressors and comprises a machine head shell, an air inlet valve shell and a valve core component. The machine head shell is provided with an air inlet; the air inlet valve shell is arranged at the air inlet of the machine head shell, and the air inlet valve shell is communicated with the machine head shell; wherein the air inlet valve shell and the machine head shell are integrally formed, or the air inlet valve shell is welded on the machine head shell; the valve element assembly is connected into the air inlet valve shell and used for opening or closing the air inlet valve shell. The air inlet valve shell and the machine head shell are integrally formed or the air inlet valve shell is welded to the machine head shell, so that the air inlet valve shell and the machine head shell can be integrated, and the situation of leakage at the joint of the air inlet valve shell and the machine head shell can be reduced; by means of the arrangement, the situation of leakage can be reduced, the overall size can be reduced, the space can be saved, the cost can be saved, resource waste can be reduced, and the follow-up installation efficiency of the whole air compressor is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air compressors, and in particular relates to a head assembly of an air compressor. Background Art

[0002] An air compressor is a machine that compresses air in the atmosphere to form high-pressure gas. According to the working principle, it can be divided into positive displacement compressors, reciprocating compressors and centrifugal compressors. The working principle of positive displacement compressors is to compress the volume of gas, increase the density of gas molecules per unit volume, and thus increase the pressure of the compressed air.

[0003] Taking a screw air compressor as an example, the head includes a shell and twin screws rotatably arranged in the shell, and the twin screws are meshed with each other; the shell is provided with an air inlet and an exhaust port; one end of the head is connected to a drive motor, and the drive motor can drive the screws to rotate.

[0004] In the prior art, the air compressor head and the air inlet valve are separately arranged. The air compressor manufacturer needs to purchase the air compressor head and the air inlet valve separately, and then the operator installs the air inlet valve on the head with bolts. After long-term use, the connection between the air inlet valve and the head will leak. Utility Model Content

[0005] The embodiment of the utility model provides a head assembly of an air compressor, aiming to solve the technical problem in the prior art that leakage is likely to occur between the air intake valve and the head after the head is used for a long time.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] Provided is a head assembly of an air compressor, comprising:

[0008] A nose housing having an air inlet;

[0009] An air intake valve housing is arranged at the position of the air intake port of the machine head housing, and an air passage is connected between the air intake valve housing and the machine head housing; wherein the air intake valve housing and the machine head housing are integrally formed, or the air intake valve housing is welded to the machine head housing;

[0010] The valve core assembly is connected in the intake valve housing and is used to open or close the air passage.

[0011] In a possible implementation, the intake valve housing and the head housing have a smooth transition.

[0012] In a possible implementation, a first fixed sleeve is connected to a position of the intake valve housing near the bottom, and the valve core assembly includes:

[0013] A sealing ring connected inside the intake valve housing;

[0014] The valve core body is slidably matched with the first fixed sleeve; the top of the valve core body can contact the bottom of the sealing ring to close the air passage;

[0015] The first elastic member is arranged in the first fixed sleeve; one end of the first elastic member is connected to the valve core body to provide elastic force to the valve core body.

[0016] In a possible implementation, the valve core assembly further includes:

[0017] The base and the sliding seal are arranged in the first fixed sleeve; the two ends of the first elastic member are respectively connected to the base and the valve core body;

[0018] A limiting member connected in the first fixing sleeve, the limiting member being used for limiting the height of the base;

[0019] Wherein, the base is provided with a sliding sleeve, the bottom of the valve core body is provided with a sliding portion that is slidably matched with the sliding sleeve; the first elastic member is arranged in the sliding sleeve;

[0020] A second elastic member is sleeved on the outside of the sliding sleeve, and two ends of the second elastic member are respectively connected to the base and the limiting member.

[0021] In a possible implementation, the valve core assembly includes:

[0022] The valve core housing is connected to the intake valve housing; the valve core housing has a first air hole connected to the outside, and the valve core housing has a second air hole connected to the intake valve housing; a gas passage is formed between the first air hole, the valve core housing, the second air hole and the intake valve housing;

[0023] A sealing ring connected to the valve core housing; the sealing ring is located between the first air hole and the second air hole;

[0024] A valve core body is slidably disposed in the valve core housing; the top of the valve core body can contact the bottom of the sealing ring to separate the first air hole and the second air hole;

[0025] The first elastic member is arranged in the valve core housing; one end of the first elastic member is connected to the valve core body to provide elastic force to the valve core body.

[0026] In a possible implementation, the valve core housing has a sliding cavity therein, and the valve core assembly further includes:

[0027] A base, a sliding seal is arranged in the sliding cavity; two ends of the first elastic member are respectively connected to the base and the valve core body;

[0028] A limiting member connected in the valve core housing, the limiting member being used to limit the height of the base;

[0029] Wherein, the base is provided with a sliding sleeve, the bottom of the valve core body is provided with a sliding portion that is slidably matched with the sliding sleeve; the first elastic member is arranged in the sliding sleeve;

[0030] A second elastic member is sleeved on the outside of the sliding sleeve, and two ends of the second elastic member are respectively connected to the base and the limiting member.

[0031] In a possible implementation, the interior of the intake valve housing has a first channel, an exhaust channel, and an opening and closing channel connecting the first channel and the exhaust channel; the intake valve housing is connected to a solenoid valve, the solenoid valve has an inlet and an outlet, the outlet of the solenoid valve is connected to the opening and closing channel, and the inlet of the solenoid valve is used to communicate with a high-pressure gas source;

[0032] The first channel is connected to the first fixed sleeve, and the connection position is located below the base; or the first channel is connected to the sliding cavity, and the connection position is located below the base; the degassing channel is connected to the outside.

[0033] In a possible implementation, when the first channel is connected to the sliding chamber, the outer side wall of the valve core housing contacts the intake valve housing at the position of the first channel, and the valve core housing has a through hole connected to the first channel.

[0034] In one possible implementation, when the first channel is connected to the sliding cavity, a second fixed sleeve is connected to the intake valve housing, and the side wall of the second fixed sleeve has a through hole connected to the first channel; the bottom of the valve core housing is plug-in and sealed with the second fixed sleeve, and the bottom of the valve core housing has a through hole connected to the second fixed sleeve.

[0035] In a possible implementation, the first channel is connected to a side wall of the intake valve housing, an outer side of the first channel has an internal thread, and the intake valve housing has a control bolt that matches the thread of the first channel.

[0036] The utility model provides an air compressor head assembly. Compared with the prior art, the intake valve housing and the head housing are integrally formed or welded to the head housing, so that the intake valve housing and the head housing can be integrated, thereby reducing leakage at the connection between the intake valve housing and the head housing; a valve core assembly is arranged in the intake valve housing, and the valve core assembly can open or close the intake valve housing to facilitate the normal operation of the head. Through the above-mentioned arrangement of the present application, compared with the method in the prior art where the head housing and the intake valve housing are separated, the present application can reduce the occurrence of leakage; through the above-mentioned arrangement of the present application, the overall volume can be reduced, space can be saved, and costs can be saved, resource waste can be reduced, and the efficiency of subsequent air compressor installation can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of a head assembly of an air compressor provided by an embodiment of the utility model;

[0038] Figure 2 A cross-sectional view of a head housing of a head assembly of an air compressor provided by an embodiment of the utility model;

[0039] Figure 3 for Figure 2 The enlarged schematic diagram of the middle A part;

[0040] Figure 4 A cross-sectional view of an intake valve housing of a head assembly of an air compressor provided by an embodiment of the utility model;

[0041] Figure 5 for Figure 4 Enlarged schematic diagram of part B in the middle.

[0042] Explanation of the accompanying drawings: 1. Head housing; 2. Intake valve housing; 21. First fixed sleeve; 22. Retaining spring; 23. First channel; 24. Degassing channel; 25. Opening and closing channel; 26. Control channel; 27. Second fixed sleeve; 3. Valve core assembly; 31. Sealing ring; 32. Valve core body; 321. Accommodating chamber; 33. First elastic member; 34. Base; 341. Sliding sleeve; 35. Limiting member; 36. Second elastic member; 37. Valve core housing; 371. First air hole; 372. Second air hole; 373. Sliding chamber; 4. Solenoid valve; 41. Inlet. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] Please also read Figures 1 to 5 Now, a head assembly of an air compressor provided by the utility model is described. The head assembly of an air compressor includes a head housing 1, an intake valve housing 2 and a valve core assembly 3; the head housing 1 has an air inlet; the intake valve housing 2 is arranged at the position of the head housing 1 at the air inlet, and a communicating air passage is provided between the intake valve housing 2 and the head housing 1; wherein the intake valve housing 2 is integrally formed with the head housing 1, or the intake valve housing 2 is welded to the head housing 1; the valve core assembly 3 is connected in the intake valve housing 2, and is used to open or close the air passage.

[0045] The utility model provides a head assembly of an air compressor. Compared with the prior art, the intake valve housing 2 and the head housing 1 are integrally formed or the intake valve housing 2 is welded to the head housing 1, so that the intake valve housing 2 and the head housing 1 can be made into a whole, thereby reducing the leakage at the connection between the intake valve housing 2 and the head housing 1; a valve core assembly 3 is arranged in the intake valve housing 2, and the valve core assembly 3 can open or close the intake valve housing 2 to facilitate the normal operation of the head. Through the above-mentioned arrangement of the present application, compared with the method of separating the head housing 1 and the intake valve housing 2 in the prior art, the present application can reduce the leakage; through the above-mentioned arrangement of the present application, the overall volume can be reduced, space can be saved, and costs can be saved, resource waste can be reduced, and the efficiency of subsequent air compressor installation can be improved.

[0046] It should be noted that the air intake valve and the machine head in the prior art are separately arranged. When the air intake valve is installed on the machine head, a sealing ring needs to be arranged at the installation position of the air intake valve. In the process of aligning the installation position of the air intake valve with the installation position of the machine head, the sealing ring is prone to displacement. After tightening the bolts, the sealing ring is prone to damage, which may cause leakage. In normal use, the sealing ring may also cause leakage after aging. The above-mentioned arrangement of the present application can solve the leakage problem between the air intake valve housing 2 and the machine head housing 1 in the prior art.

[0047] In some embodiments, Figures 1 to 5 As shown, the intake valve housing 2 and the head housing 1 have a smooth transition.

[0048] It should be noted that the connection between the intake valve housing 2 and the head housing 1 is an arc surface, and the concave surface faces outward; through the above arrangement, the stress concentration at the connection position between the intake valve housing 2 and the head housing 1 can be reduced, which is conducive to improving the service life.

[0049] In some embodiments, Figures 1 to 5As shown, the first fixed sleeve 21 is connected to the position of the intake valve housing 2 near the bottom, and the valve core assembly 3 includes a sealing ring 31, a valve core body 32 and a first elastic member 33; the sealing ring 31 is connected to the intake valve housing 2; the valve core body 32 is slidably matched with the first fixed sleeve 21; the top of the valve core body 32 can contact the bottom of the sealing ring 31 to close the air passage; the first elastic member 33 is arranged in the first fixed sleeve 21; one end of the first elastic member 33 is connected to the valve core body 32 to provide elastic force to the valve core body 32. The valve core assembly 3 also includes a base 34 and a limiter 35, the base 34 is slidingly sealed and arranged in the first fixed sleeve 21; the two ends of the first elastic member 33 are respectively connected to the base 34 and the valve core body 32; the limiter 35 is connected to the first fixed sleeve 21, and the limiter 35 is used to limit the height of the base 34.

[0050] Exemplarily, the interior of the intake valve housing 2 is provided with an internal thread, the outer peripheral wall of the sealing ring 31 is provided with an external thread, and the sealing ring 31 is threadedly matched with the intake valve housing 2; through the above arrangement, when the valve core body 32 is damaged, it is convenient to replace the valve core body 32. A disassembly hole (not shown in the figure) can be provided on the top of the sealing ring 31, and the disassembly hole is a blind hole. When the sealing ring 31 needs to be disassembled, the rod-shaped component is inserted into the disassembly hole, and the operator can disassemble the sealing ring 31 by rotating the rod-shaped component.

[0051] Exemplarily, the limiting member 35 includes a limiting sleeve, which is arranged in the first fixed sleeve 21; the first fixed sleeve 21 has a step that contacts the bottom of the limiting sleeve, and the first fixed sleeve 21 also has a retaining spring 22 that contacts the top of the limiting sleeve, and the retaining spring 22 is clamped in the retaining spring groove of the inner wall of the first fixed sleeve 21.

[0052] Exemplarily, the base 34 has a sliding sleeve 341, the bottom of the valve core body 32 has a sliding part that slides with the sliding sleeve 341, and the first elastic member 33 is arranged in the sliding sleeve 341; the sliding sleeve 341 is sleeved with a second elastic member 36 on the outside, and the second elastic member 36 can be a spring, and the two ends of the spring are respectively connected to the limiting sleeve and the base 34. The interior of the sliding part has an accommodating cavity 321; the first elastic member 33 is arranged in the accommodating cavity 321, and the first elastic member 33 can be a spring, one end of the spring contacts the bottom of the hole of the accommodating cavity 321, and the other end of the spring contacts the bottom of the sliding sleeve 341.

[0053] In some embodiments, Figures 1 to 5As shown, the valve core assembly 3 includes a valve core housing 37, a sealing ring 31, a valve core body 32 and a first elastic member 33; the valve core housing 37 is connected to the intake valve housing 2; the valve core housing 37 has a first air hole 371 connected to the outside, and the valve core housing 37 has a second air hole 372 connected to the intake valve housing 2; a gas channel is formed between the first air hole 371, the valve core housing 37, the second air hole 372 and the intake valve housing 2; the sealing ring 31 is connected to the valve core housing 37; the sealing ring 31 is located between the first air hole 371 and the second air hole 372; the valve core body 32 is slidably arranged in the valve core housing 37; the top of the valve core body 32 can contact with the bottom of the sealing ring 31 to separate the first air hole 371 and the second air hole 372; the first elastic member 33 is arranged in the valve core housing 37; one end of the first elastic member 33 is connected to the valve core body 32. A sliding cavity 373 is provided in the valve core housing 37, and the valve core assembly 3 also includes a base 34 and a limit member 35; the base 34 sliding seal is arranged in the sliding cavity 373; the two ends of the first elastic member 33 are respectively connected to the base 34 and the valve core body 32; the limit member 35 is connected in the valve core housing 37, and the limit member 35 is used to limit the height of the base 34.

[0054] Exemplarily, the outer circumferential wall at the top of the valve core housing 37 has an external thread, and the inner circumferential wall of the intake valve housing 2 has an internal thread, and the valve core housing 37 is threadedly matched with the intake valve housing 2; the sealing ring 31, the valve core body 32, the first elastic member 33, the base 34 and the limit member 35 are all arranged in the valve core housing 37. After the valve core housing 37 is removed from the intake valve housing 2, the entire valve core assembly 3 can be replaced.

[0055] Exemplarily, the top of the valve core housing 37 is open, and the valve core housing 37 has an internal thread near the top, the outer peripheral wall of the sealing ring 31 has an external thread, and the sealing ring 31 is threadedly matched with the valve core housing 37; the limit member 35 includes a limit sleeve, and the limit sleeve is arranged in the sliding cavity 373; the inner peripheral wall of the sliding cavity 373 has a step that contacts the bottom of the limit sleeve, and the sliding cavity 373 has a retaining spring 22 that contacts the top of the limit sleeve, and the retaining spring 22 is stuck in the retaining spring groove of the inner peripheral wall of the sliding cavity 373; a second elastic member 36 is provided between the limit sleeve and the base 34, and the second elastic member 36 can be a spring, and the two ends of the spring are respectively connected to the limit sleeve and the base 34.

[0056] In some embodiments, Figures 1 to 5As shown, the interior of the intake valve housing 2 is provided with a first channel 23, a venting channel 24 and an opening and closing channel 25 connecting the first channel 23 and the venting channel 24; the intake valve housing 2 is connected with a solenoid valve 4, the solenoid valve 4 has an inlet 41 and an outlet, the outlet of the solenoid valve 4 is connected with the opening and closing channel 25, and the inlet 41 of the solenoid valve 4 is used to connect with a high-pressure gas source; wherein, the first channel 23 is connected with the first fixed sleeve 21, and the connecting position is located below the base 34; or the first channel 23 is connected with the sliding cavity 373, and the connecting position is located below the base 34; the venting channel 24 is connected with the outside.

[0057] It should be noted that the intake valve housing 2 has a control channel 26 connected to the outlet of the solenoid valve 4, and the control channel 26 is connected to the opening and closing channel 25; the valve core of the solenoid valve 4 can conduct the inlet 41 and the outlet, and the solenoid valve 4 can also close the inlet 41 and the outlet. When the solenoid valve 4 is turned on, the high-pressure gas is divided into two paths, one is discharged into the air from the exhaust channel 24, and the other is entered from the first channel 23 into the first fixed sleeve 21 or the sliding cavity 373 to push the base 34, so that the valve core body 32 is pressed against the sealing ring 31 to close the intake valve housing 2; through the above process, the air entering the head housing 1 from the intake valve housing 2 can be reduced during the exhaust process.

[0058] In some embodiments, Figures 1 to 5 As shown, when the first passage 23 is connected to the sliding chamber 373 , the outer wall of the valve core housing 37 contacts the intake valve housing 2 at the position of the first passage 23 , and the valve core housing 37 has a through hole connected to the first passage 23 .

[0059] It should be noted that a portion of the outer wall of the valve core housing 37 contacts the intake valve housing 2, and an intake space is provided between the remaining portion of the valve core housing 37 and the inner wall of the intake valve housing 2. The valve core housing 37 may also be connected to the first passage 23 of the intake valve housing 2 through a pipeline, so that the first passage 23 is connected to the sliding chamber 373.

[0060] In some embodiments, Figures 1 to 5 As shown, when the first channel 23 is connected to the sliding chamber 373, a second fixed sleeve 27 is connected to the intake valve housing 2, and the side wall of the second fixed sleeve 27 has a through hole connected to the first channel 23; the bottom of the valve core housing 37 is plug-in and sealed with the second fixed sleeve 27, and the valve core housing 37 has a through hole connected to the second fixed sleeve 27.

[0061] It should be noted that the sealing position of the valve core housing 37 and the second fixed sleeve 27 is located above the connection position between the first channel 23 and the second fixed sleeve 27, and the communication position between the valve core housing 37 and the second fixed sleeve 27 and the communication position between the second fixed sleeve 27 and the first channel 23 are in the same chamber, so that the valve core housing 37 can be connected to the first channel 23.

[0062] In some embodiments, Figures 1 to 5 As shown, the first channel 23 is connected to the side wall of the intake valve housing 2, the outer side of the first channel 23 has an internal thread, and the intake valve housing 2 has a control bolt that matches the thread of the first channel 23. The top of the opening and closing channel 25 is provided with a safety valve. By controlling the opening of the safety valve, the size of the connection between the opening and closing channel 25 and the exhaust channel 24 can be controlled, thereby facilitating the control of the exhaust speed. It should be noted that when the exhaust speed needs to be accelerated, the control bolt can be unscrewed to increase the exhaust speed.

[0063] The shutdown and unloading process is as follows: under the action of frequency conversion, the speed of the screw in the machine head gradually decreases, and the high-pressure gas in the air compressor system enters the control channel 26 after passing through the solenoid valve 4. The pressure gas in the control channel 26 is divided into two paths, one path goes up along the opening and closing channel 25 to enter the exhaust channel 24, and is finally discharged to the outside; the other path goes down along the opening and closing channel 25 to enter the first channel 23, and then the pressure gas pushes the base 34, and the top of the sliding sleeve 341 on the base 34 contacts the bottom of the valve core body 37, and pushes the valve core body 37 to the position in contact with the sealing ring 31, thereby closing the air passage on the intake valve housing 2. This is a continuous exhaust process; when the pressure in the air compressor system is normal pressure, the air compressor is unloaded.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A head assembly of an air compressor, characterized in that: include: A nose housing having an air inlet; An air intake valve housing is arranged at the position of the air intake port of the machine head housing, and an air passage is connected between the air intake valve housing and the machine head housing; wherein the air intake valve housing and the machine head housing are integrally formed, or the air intake valve housing is welded to the machine head housing; The valve core assembly is connected to the intake valve housing and is used to open or close the air passage.

2. The head assembly of an air compressor according to claim 1, characterized in that: The intake valve housing and the machine head housing have a smooth transition.

3. The head assembly of an air compressor according to claim 1, characterized in that: A first fixed sleeve is connected to the intake valve housing near the bottom, and the valve core assembly includes: A sealing ring connected inside the intake valve housing; The valve core body is slidably matched with the first fixed sleeve; the top of the valve core body can contact the bottom of the sealing ring to close the air passage; The first elastic member is arranged in the first fixed sleeve; one end of the first elastic member is connected to the valve core body to provide elastic force to the valve core body.

4. The head assembly of an air compressor according to claim 3, characterized in that: The valve core assembly also includes: The base and the sliding seal are arranged in the first fixed sleeve; the two ends of the first elastic member are respectively connected to the base and the valve core body; A limiting member connected in the first fixing sleeve, the limiting member being used for limiting the height of the base; Wherein, the base is provided with a sliding sleeve, the bottom of the valve core body is provided with a sliding portion that is slidably matched with the sliding sleeve; the first elastic member is arranged in the sliding sleeve; A second elastic member is sleeved on the outside of the sliding sleeve, and two ends of the second elastic member are respectively connected to the base and the limiting member.

5. The head assembly of an air compressor according to claim 1, characterized in that: The valve core assembly comprises: The valve core housing is connected to the intake valve housing; the valve core housing has a first air hole connected to the outside, and the valve core housing has a second air hole connected to the intake valve housing; a gas passage is formed between the first air hole, the valve core housing, the second air hole and the intake valve housing; A sealing ring connected to the valve core housing; the sealing ring is located between the first air hole and the second air hole; A valve core body is slidably disposed in the valve core housing; the top of the valve core body can contact the bottom of the sealing ring to separate the first air hole and the second air hole; The first elastic member is arranged in the valve core housing; one end of the first elastic member is connected to the valve core body to provide elastic force to the valve core body.

6. The head assembly of an air compressor according to claim 5, characterized in that: The valve core housing has a sliding cavity therein, and the valve core assembly further comprises: A base, a sliding seal is arranged in the sliding cavity; two ends of the first elastic member are respectively connected to the base and the valve core body; A limiting member connected in the valve core housing, the limiting member being used to limit the height of the base; Wherein, the base is provided with a sliding sleeve, the bottom of the valve core body is provided with a sliding portion that is slidably matched with the sliding sleeve; the first elastic member is arranged in the sliding sleeve; A second elastic member is sleeved on the outside of the sliding sleeve, and two ends of the second elastic member are respectively connected to the base and the limiting member.

7. The head assembly of an air compressor according to claim 4 or 6, characterized in that: The interior of the intake valve housing is provided with a first channel, a deflation channel, and an opening and closing channel communicating with the first channel and the deflation channel; the intake valve housing is connected with a solenoid valve, the solenoid valve having an inlet and an outlet, the outlet of the solenoid valve being communicated with the opening and closing channel, and the inlet of the solenoid valve being used to communicate with a high-pressure gas source; The first channel is connected to the first fixed sleeve, and the connection position is located below the base; or the first channel is connected to the sliding cavity, and the connection position is located below the base; the degassing channel is connected to the outside.

8. The head assembly of an air compressor according to claim 7, characterized in that: When the first passage is communicated with the sliding chamber, the outer side wall of the valve core housing contacts the intake valve housing at the position of the first passage, and the valve core housing has a through hole communicated with the first passage.

9. The head assembly of an air compressor according to claim 7, characterized in that: When the first channel is connected to the sliding cavity, a second fixed sleeve is connected to the intake valve housing, and the side wall of the second fixed sleeve has a through hole connected to the first channel; the bottom of the valve core housing is plug-in and sealed with the second fixed sleeve, and the bottom of the valve core housing has a through hole connected to the second fixed sleeve.

10. The head assembly of an air compressor according to claim 7, characterized in that: The first channel is connected to the side wall of the intake valve housing, the outer side of the first channel has an internal thread, and the intake valve housing has a control bolt that matches the thread of the first channel.

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