Vacuum generator with improved structure

Abstract

The utility model discloses a vacuum generator with an improved structure, which comprises a vacuum generator body, an inner cavity is arranged in the vacuum generator body, two ends of the vacuum generator body are respectively provided with an air inlet and an air outlet which are communicated with the inner cavity, and the vacuum generator further comprises a noise reduction assembly. The noise reduction assembly is arranged on the outer side of the vacuum generator body, the noise reduction assembly is detachably connected with the exhaust port in a sealed mode, and the noise reduction assembly is used for reducing noise generated by the exhaust port when the vacuum generator operates. The noise reduction assembly is arranged on the outer side of the vacuum generator body, so that the whole vacuum generator body is kept small, exquisite and compact, and the vacuum generator is more beneficial to being used in application occasions with limited space. And meanwhile, the noise reduction assembly and the exhaust port are in detachable sealing connection, so that the maintenance complexity and cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum generators, in particular to a vacuum generator with an improved structure. Background Art

[0002] The vacuum generator is a component that uses the Venturi tube principle to generate a relative vacuum. When compressed air enters the Venturi tube from the inlet, the internal cross-section of the Venturi tube gradually decreases, the compressed air pressure in the Venturi tube gradually increases, and the flow rate also increases accordingly, causing the suction hole connected to the small cross-section of the Venturi tube to generate negative pressure, causing the air around the suction hole to be sucked into the Venturi tube, and flow into the diffusion chamber together with the compressed air to increase the flow rate of the gas, thereby generating a relative vacuum near the suction hole.

[0003] When the vacuum generator is in operation, the exhaust port may generate noise, which may have adverse effects on the working environment and workers. Workers who are in a high-noise environment for a long time may suffer from health problems such as hearing loss, tinnitus, and insomnia. At the same time, the noise may also interfere with the workers' concentration and reduce work efficiency.

[0004] In the prior art, a Chinese patent with authorization announcement number CN214366929U discloses a vacuum generator, including a valve body, a valve sleeve and a valve bonnet, wherein a valve cavity is arranged in the valve body, an air inlet connected to the valve cavity is provided on the valve body, and an exhaust port connected to the valve cavity is provided on the valve bonnet; a venturi nozzle is arranged in the air inlet, a receiving tube is arranged in the valve cavity, the bottom end of the receiving tube is sleeve-fitted with the venturi nozzle, a suction hole corresponding to the venturi nozzle is provided on the side wall of the bottom end of the receiving tube, the top end of the receiving tube is arranged corresponding to the exhaust port, a silencer is provided on the top cover of the receiving tube, and the silencer is accommodated in the valve bonnet, when gas is introduced into the air inlet, a negative pressure is formed at the suction hole under the principle of the venturi tube, vacuum suction is realized, and noise is effectively reduced by the silencer.

[0005] The above technology reduces the noise generated by the exhaust port by setting a muffler element in the valve bonnet. However, since the muffler element needs to be accommodated in the valve bonnet, the size of the valve bonnet needs to be increased accordingly, which results in a larger volume of the entire vacuum generator, which is not conducive to use in some applications with limited space. At the same time, once the muffler element is damaged or needs to be replaced, the valve bonnet needs to be disassembled for operation, which increases the complexity and cost of maintenance. Utility Model Content

[0006] In view of the above problems, the purpose of the utility model is to overcome the deficiencies of the prior art and design a vacuum generator with an improved structure.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum generator with an improved structure, comprising a vacuum generator body, an inner cavity is provided in the vacuum generator body, an air inlet and an exhaust port connected to the inner cavity are respectively provided at both ends of the vacuum generator body, an air suction port connected to the inner cavity is provided on the side of the vacuum generator body, and also comprises a noise reduction component, the noise reduction component is arranged on the outside of the vacuum generator body, and the noise reduction component is detachably sealed and connected to the exhaust port, and the noise reduction component is used to reduce the noise generated by the exhaust port when the vacuum generator is running.

[0008] As a preferred embodiment of the utility model, the noise reduction assembly includes a noise reduction pipe, a silencer hole and an air outlet pipe, one end of the noise reduction pipe is detachably sealed and connected to the vacuum generator body, and the noise reduction pipe is communicated with the exhaust port, the silencer hole is arranged on the noise reduction pipe and is located inside the noise reduction pipe, and the air outlet pipe is detachably connected to the noise reduction pipe and is located at one end of the noise reduction pipe away from the vacuum generator body.

[0009] As a preferred embodiment of the utility model, a mounting groove is provided at the exhaust port, an internal thread is provided in the mounting groove, a mounting head is provided at one end of the noise reduction tube connected to the vacuum generator body, and an external thread matching the internal thread is provided on the outer side of the mounting head.

[0010] As a preferred embodiment of the utility model, the noise reduction component also includes a sealing ring, a sealing groove is provided in the installation groove, the sealing ring is arranged in the sealing groove, and the sealing ring is made of rubber material.

[0011] As a preferred embodiment of the utility model, the noise reduction component also includes an air duct, one end of the air duct is detachably and hermetically connected to the vacuum generator body, and the air duct is communicated with the exhaust port, and the other end of the air duct is detachably and hermetically connected to the noise reduction pipe, and the air duct is communicated with the noise reduction pipe.

[0012] As a preferred embodiment of the utility model, a first mounting groove is provided at the exhaust port, a first internal thread is provided in the first mounting groove, a first mounting head is provided at the end of the air guide tube connected to the vacuum generator body, a first external thread matching the first internal thread is provided on the outer side of the first mounting head, a second mounting groove is provided at the end of the noise reduction tube connected to the air guide tube, a second internal thread is provided in the second mounting groove, a second mounting head is provided at the end of the air guide tube connected to the noise reduction tube, a second external thread matching the second internal thread is provided on the outer side of the second mounting head.

[0013] As a preferred embodiment of the utility model, the noise reduction component also includes a first sealing ring, a first sealing groove is provided in the first installation groove, the first sealing ring is arranged in the first sealing groove, and the first sealing ring is made of rubber material.

[0014] As a preferred embodiment of the utility model, the noise reduction component also includes a second sealing ring, a second sealing groove is provided in the second installation groove, the second sealing ring is arranged in the second sealing groove, and the second sealing ring is made of rubber material.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model maintains the overall smallness and compactness of the vacuum generator body by setting a noise reduction component on the outside of the vacuum generator body, which is more conducive to use in applications with limited space. At the same time, the noise reduction component is connected to the exhaust port in a detachable sealed manner, which reduces the complexity and cost of maintenance. When the noise reduction component is damaged or needs to be replaced, it is only necessary to simply disassemble and replace the new noise reduction component without disassembling the entire vacuum generator. This not only reduces the complexity of maintenance, but also reduces the time and cost required for maintenance, and improves the reliability and service life of the equipment. Specifically, firstly, through the noise reduction component that is detachably sealed and connected to the exhaust port, the noise generated by the exhaust port can be greatly reduced after being processed by the noise reduction component, thereby significantly improving the working environment and reducing the adverse effects on the staff. Being in a low-noise environment for a long time, the staff can avoid health problems such as hearing loss, tinnitus, insomnia, etc., and at the same time, they can work more attentively and improve work efficiency. Secondly, the noise reduction component is set on the outside of the vacuum generator body to avoid the increase of the volume of the vacuum generator body.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a vacuum generator with an improved structure Figure 1 .

[0020] Figure 2 A schematic diagram of the three-dimensional structure of a vacuum generator with an improved structure Figure 2 .

[0021] Figure 3The invention discloses a structural cross-section of a noise reduction component in a vacuum generator having an improved structure. Figure 1 .

[0022] Figure 4 A structural cross-section of a noise reduction component in a vacuum generator with an improved structure Figure 2 .

[0023] Figure 5 A schematic diagram of the three-dimensional structure of a vacuum generator with an improved structure Figure 3 .

[0024] Figure 6 The structure of the air guide tube in the vacuum generator with improved structure is shown in cross section. Figure 1 .

[0025] Figure 7 The structure of the air guide tube in the vacuum generator with improved structure is shown in cross section. Figure 2 .

[0026] Reference numerals include:

[0027] 1. Vacuum generator body; 11. Air inlet; 12. Exhaust port; 121. Mounting groove; 1211. Sealing groove; 122. First mounting groove; 1221. First sealing groove; 123. Second mounting groove; 1231. Second sealing groove; 13. Air inlet; 2. Noise reduction assembly; 21. Noise reduction pipe; 211. Mounting head; 22. Silence hole; 23. Exhaust pipe; 24. Sealing ring; 25. Air guide pipe; 251. First mounting head; 252. Second mounting head; 26. First sealing ring; 27. Second sealing ring. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] like Figures 1 to 7 As shown, the vacuum generator with an improved structure described in the utility model includes a vacuum generator body 1, an inner cavity is provided in the vacuum generator body 1, and an air inlet 11 and an exhaust port 12 connected to the inner cavity are respectively provided at both ends of the vacuum generator body 1, and an air suction port 13 connected to the inner cavity is provided on the side of the vacuum generator body 1, and also includes a noise reduction component 2, the noise reduction component 2 is arranged on the outside of the vacuum generator body 1, and the noise reduction component 2 is detachably sealed and connected to the exhaust port 12, and the noise reduction component 2 is used to reduce the noise generated by the exhaust port 12 when the vacuum generator is running.

[0030] The utility model maintains the overall smallness and compactness of the vacuum generator body 1 by setting the noise reduction component 2 on the outside of the vacuum generator body 1, which is more conducive to use in applications with limited space. At the same time, the noise reduction component 2 and the exhaust port 12 are connected in a detachable sealed manner, which reduces the complexity and cost of maintenance. When the noise reduction component 2 is damaged or needs to be replaced, it is only necessary to simply disassemble and replace the new noise reduction component 2 without disassembling the entire vacuum generator. This not only reduces the complexity of maintenance, but also reduces the time and cost required for maintenance, and improves the reliability and service life of the equipment.

[0031] Specifically, firstly, by means of the noise reduction component 2 which is detachably sealed and connected to the exhaust port 12, the noise generated by the exhaust port 12 can be greatly reduced after being processed by the noise reduction component 2, thereby significantly improving the working environment and reducing the adverse effects on the staff. Working in a low-noise environment for a long time can help the staff avoid health problems such as hearing loss, tinnitus, and insomnia. At the same time, they can also work more attentively and improve work efficiency. Secondly, the noise reduction component 2 is arranged on the outside of the vacuum generator body 1 to avoid an increase in the volume of the vacuum generator body 1.

[0032] Further, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the noise reduction component 2 includes a noise reduction pipe 21, a silencer hole 22 and an air outlet pipe 23. One end of the noise reduction pipe 21 is detachably sealed and connected to the vacuum generator body 1, and the noise reduction pipe 21 is communicated with the exhaust port 12. The silencer hole 22 is arranged on the noise reduction pipe 21 and is located inside the noise reduction pipe 21. The air outlet pipe 23 is detachably connected to the noise reduction pipe 21 and is located at one end of the noise reduction pipe 21 away from the vacuum generator body 1.

[0033] Specifically, by means of the noise reduction pipe 21 connected to the exhaust port 12, the noise generated by the exhaust port 12 is effectively reduced when passing through the noise reduction pipe 21. At the same time, the noise reduction effect of the noise reduction pipe 21 is further enhanced by the silencer holes 22 provided on the noise reduction pipe 21. In addition, by adjusting the size and distribution of the silencer holes 22, the noise reduction pipe 21 can more effectively absorb and dissipate noise waves, thereby achieving more efficient noise reduction of the noise reduction component 2. In this way, the noise level in the working environment is significantly reduced, which is beneficial to protecting the hearing of the staff and improving work efficiency. Secondly, the detachable design makes the maintenance of the noise reduction component 2 more convenient. When the noise reduction component 2 is damaged or needs to be replaced, the staff can easily disassemble and replace the new noise reduction component 2 without disassembling the entire vacuum generator. This not only reduces the difficulty and complexity of maintenance, but also reduces the time and cost required for maintenance, and improves the reliability and service life of the equipment.

[0034] Further, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the exhaust port 12 is provided with a mounting groove 121, and the mounting groove 121 is provided with an internal thread. The end of the noise reduction tube 21 connected to the vacuum generator body 1 is provided with a mounting head 211, and the outer side of the mounting head 211 is provided with an external thread that matches the internal thread.

[0035] Specifically, first of all, this threaded connection method ensures a stable connection between the noise reduction tube 21 and the vacuum generator body 1. Through the cooperation of the internal thread and the external thread, the noise reduction tube 21 can be effectively prevented from loosening or falling off during use, thereby ensuring the continuity and stability of the noise reduction effect. Secondly, this connection method also has good sealing performance. Due to the tightness of the threaded connection, gas leakage from the connection can be effectively prevented, avoiding the problem of noise leakage. This not only helps to improve the noise reduction effect of the noise reduction assembly 2, but also helps to maintain the efficient operation of the vacuum generator body 1. In addition, the threaded connection also has the advantage of easy installation and disassembly. The staff can easily connect or disassemble the noise reduction tube 21 to the vacuum generator body 1 without the use of special tools or equipment. This not only reduces the difficulty and complexity of operation, but also improves work efficiency and convenience of maintenance.

[0036] Further, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the noise reduction component 2 further includes a sealing ring 24 . A sealing groove 1211 is provided in the installation groove 121 . The sealing ring 24 is arranged in the sealing groove 1211 . The sealing ring 24 is made of rubber material.

[0037] Specifically, first, the sealing performance between the noise reduction component 2 and the vacuum generator body 1 is enhanced. The rubber sealing ring 24 has good elasticity and sealing performance, and can fit tightly in the sealing groove 1211 of the installation groove 121, effectively preventing gas leakage from the connection. This not only helps to maintain the stability and durability of the noise reduction effect, but also avoids the problems of noise leakage and gas waste, and improves the overall performance of the vacuum generator body 1. Secondly, the stability and reliability of the installation of the noise reduction component 2 are improved. Due to the presence of the sealing ring 24, the noise reduction pipe 21 can fit more closely at the exhaust port 12 of the vacuum generator body 1 during installation, reducing the risk of increased noise or gas leakage caused by loose connection or excessive gap. This helps to ensure that the noise reduction component 2 remains stable and reliable during long-term use. In addition, the rubber sealing ring 24 also has certain wear resistance and corrosion resistance, can resist the erosion of some chemicals and mechanical wear, and extend the service life of the noise reduction component 2.

[0038] Further, refer to Figure 5 , Figure 6 and Figure 7 As shown, the noise reduction component 2 also includes an air duct 25, one end of which is detachably and sealedly connected to the vacuum generator body 1, and the air duct 25 is communicated with the exhaust port 12, and the other end of the air duct 25 is detachably and sealedly connected to the noise reduction pipe 21, and the air duct 25 is communicated with the noise reduction pipe 21.

[0039] Specifically, firstly, the air guide 25 serves as a channel connecting the vacuum generator body 1 and the noise reduction tube 21, ensuring that the gas can flow smoothly from the exhaust port 12 into the noise reduction tube 21, further enhancing the noise reduction effect. Through the guidance of the air guide 25, the gas can form a more concentrated airflow before entering the noise reduction tube 21, so that the gas can smoothly enter the noise reduction tube 21, avoiding the turbulence and noise generation during the gas flow process, and also facilitating the noise reduction structure inside the noise reduction tube 21 to more effectively absorb and dissipate noise.

[0040] Further, refer to Figure 5 , Figure 6 and Figure 7As shown, a first mounting groove 122 is provided at the exhaust port 12, and a first internal thread is provided in the first mounting groove 122. A first mounting head 251 is provided at one end of the air guide pipe 25 connected to the vacuum generator body 1, and a first external thread matching the first internal thread is provided on the outer side of the first mounting head 251. A second mounting groove 123 is provided at one end of the noise reduction pipe 21 connected to the air guide pipe 25, and a second internal thread is provided in the second mounting groove 123. A second mounting head 252 is provided at one end of the air guide pipe 25 connected to the noise reduction pipe 21, and a second external thread matching the second internal thread is provided on the outer side of the second mounting head 252.

[0041] Specifically, first, this threaded connection method realizes a stable connection between the air duct 25 and the vacuum generator body 1 and the noise reduction tube 21. Through the first internal thread in the first mounting groove 122 and the first external thread on the first mounting head 251 of the air duct 25, and the second internal thread in the second mounting groove 123 and the second external thread on the second mounting head 252 of the air duct 25, the stability of the air duct 25 when guiding the airflow is ensured, and loosening or falling off caused by vibration or external force is effectively prevented. Secondly, this connection method also has good sealing performance. Due to the tightness of the threaded connection, gas leakage from the connection can be effectively prevented, avoiding the problem of noise leakage. This not only helps to improve the noise reduction effect of the noise reduction component 2, but also helps to maintain the efficient operation of the vacuum generator body 1. In addition, the threaded connection also has the advantage of convenient installation and disassembly. The staff can complete the connection or disassembly with the vacuum generator body 1 and the noise reduction tube 21 by simply rotating the air duct 25, without the need to use special tools or equipment. This not only reduces the difficulty and complexity of operation, but also improves work efficiency and convenience of maintenance.

[0042] Further, refer to Figure 5 , Figure 6 and Figure 7 As shown, the noise reduction component 2 also includes a first sealing ring 26. A first sealing groove 1221 is provided in the first installation groove 122. The first sealing ring 26 is arranged in the first sealing groove 1221. The first sealing ring 26 is made of rubber material.

[0043] Specifically, first, the first sealing ring 26 significantly enhances the sealing performance between the air duct 25 and the vacuum generator body 1. The rubber sealing ring 24 has good elasticity and sealing performance, and can fit tightly in the first sealing groove 1221 of the first mounting groove 122, effectively preventing gas leakage at the connection. This tight sealing connection not only helps to maintain the stability and durability of the noise reduction effect, but also reduces the problems of noise leakage and gas waste, and improves the overall performance of the vacuum generator. Secondly, the setting of the first sealing ring 26 improves the stability and reliability of the installation of the noise reduction component 2. Through the sealing effect of the first sealing ring 26, the connection between the air duct 25 and the vacuum generator body 1 is more firm and stable, reducing the risk of increased noise or gas leakage caused by loose connection or excessive gap. This stable and reliable connection method helps to ensure that the noise reduction component 2 maintains excellent noise reduction performance during long-term use. In addition, the rubber first sealing ring 26 also has certain wear resistance and corrosion resistance, can resist the erosion of some chemical substances and mechanical wear, and prolongs the service life of the noise reduction component 2. At the same time, since the first sealing ring 26 is pre-installed in the first sealing groove 1221, the staff does not need to perform additional operations when installing the air guide tube 25, which simplifies the installation process and improves work efficiency.

[0044] Further, refer to Figure 5 , Figure 6 and Figure 7 As shown, the noise reduction component 2 also includes a second sealing ring 27. A second sealing groove 1231 is provided in the second installation groove 123. The second sealing ring 27 is arranged in the second sealing groove 1231. The second sealing ring 27 is made of rubber material.

[0045] Specifically, first, the second sealing ring 27 significantly enhances the sealing performance between the air duct 25 and the noise reduction tube 21. The rubber sealing ring 24 has good elasticity and sealing performance, and can fit tightly in the second sealing groove 1231 of the second mounting groove 123, effectively preventing gas leakage at the connection. This tight sealing connection helps to ensure that the noise reduction structure inside the noise reduction component 2 can fully play its role, further improving the noise reduction effect. Secondly, the setting of the second sealing ring 27 improves the overall structural stability and reliability of the noise reduction component 2. Through the sealing effect of the second sealing ring 27, the connection between the air duct 25 and the noise reduction tube 21 is more firm and stable, reducing the risk of increased noise or gas leakage caused by loose connection or excessive gap. This stable and reliable connection method helps to ensure that the noise reduction component 2 maintains stable noise reduction performance during long-term use. In addition, the rubber second sealing ring 27 also has certain wear resistance and corrosion resistance, and can resist the erosion of some chemical substances and mechanical wear, thereby extending the service life of the noise reduction component 2. At the same time, since the second sealing ring 27 is pre-installed in the second sealing groove 1231, the staff does not need to perform additional operations when installing the air guide tube 25, which further simplifies the installation process and improves work efficiency.

[0046] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A vacuum generator with an improved structure, comprising a vacuum generator body (1), wherein an inner cavity is provided in the vacuum generator body (1), an air inlet (11) and an air outlet (12) connected to the inner cavity are provided at both ends of the vacuum generator body (1), and an air suction port (13) connected to the inner cavity is provided at the side of the vacuum generator body (1), characterized in that: It also comprises a noise reduction component (2), the noise reduction component (2) being arranged outside the vacuum generator body (1), and the noise reduction component (2) being detachably sealedly connected to the exhaust port (12), and the noise reduction component (2) being used to reduce the noise generated by the exhaust port (12) when the vacuum generator is in operation.

2. A vacuum generator with an improved structure according to claim 1, characterized in that: The noise reduction component (2) comprises a noise reduction pipe (21), a silencer hole (22) and an air outlet pipe (23); one end of the noise reduction pipe (21) is detachably sealed and connected to the vacuum generator body (1), and the noise reduction pipe (21) is connected to the exhaust port (12); the silencer hole (22) is arranged on the noise reduction pipe (21) and is located inside the noise reduction pipe (21); the air outlet pipe (23) is detachably connected to the noise reduction pipe (21) and is located at one end of the noise reduction pipe (21) away from the vacuum generator body (1).

3. A vacuum generator with an improved structure according to claim 2, characterized in that: The exhaust port (12) is provided with a mounting groove (121), an internal thread is provided in the mounting groove (121), one end of the noise reduction pipe (21) connected to the vacuum generator body (1) is provided with a mounting head (211), and the outer side of the mounting head (211) is provided with an external thread that matches the internal thread.

4. A vacuum generator with an improved structure according to claim 3, characterized in that: The noise reduction component (2) further comprises a sealing ring (24); a sealing groove (1211) is provided in the installation groove (121); the sealing ring (24) is arranged in the sealing groove (1211); and the sealing ring (24) is made of rubber material.

5. A vacuum generator with an improved structure according to claim 2, characterized in that: The noise reduction component (2) further comprises an air guide tube (25), one end of which is detachably and hermetically connected to the vacuum generator body (1), and the air guide tube (25) is communicated with the exhaust port (12), and the other end of which is detachably and hermetically connected to the noise reduction tube (21), and the air guide tube (25) is communicated with the noise reduction tube (21).

6. A vacuum generator with an improved structure according to claim 5, characterized in that: A first mounting groove (122) is provided at the exhaust port (12), and a first internal thread is provided in the first mounting groove (122); a first mounting head (251) is provided at one end of the air guide pipe (25) connected to the vacuum generator body (1), and a first external thread matching the first internal thread is provided on the outer side of the first mounting head (251); a second mounting groove (123) is provided at one end of the noise reduction pipe (21) connected to the air guide pipe (25), and a second internal thread is provided in the second mounting groove (123); a second mounting head (252) is provided at one end of the air guide pipe (25) connected to the noise reduction pipe (21), and a second external thread matching the second internal thread is provided on the outer side of the second mounting head (252).

7. A vacuum generator with an improved structure according to claim 6, characterized in that: The noise reduction component (2) further comprises a first sealing ring (26); a first sealing groove (1221) is provided in the first installation groove (122); the first sealing ring (26) is arranged in the first sealing groove (1221); and the first sealing ring (26) is made of rubber material.

8. A vacuum generator with an improved structure according to claim 6, characterized in that: The noise reduction component (2) further comprises a second sealing ring (27), a second sealing groove (1231) is provided in the second installation groove (123), the second sealing ring (27) is arranged in the second sealing groove (1231), and the second sealing ring (27) is made of rubber material.

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