Atmospheric negative pressure generating device

Abstract

The utility model relates to the technical field of negative pressure machines, and particularly discloses an atmosphere negative pressure generating device which comprises a heat dissipation motor and a negative pressure generator, the heat dissipation motor comprises a motor body and a heat dissipation assembly, and the negative pressure generator comprises a shell. A main cavity and a water injection cavity which is axially arranged close to the heat dissipation assembly and is communicated with the main cavity are axially arranged in the shell far away from the heat dissipation assembly, and an air inlet cavity and an air outlet cavity which are communicated with the main cavity are formed in the two radial sides of the shell respectively; an impeller is installed in the main cavity, a sealing assembly matched with the impeller is arranged in the water injection cavity, and a rotor of the motor body is arranged in the heat dissipation assembly, the sealing assembly and the impeller in a penetrating mode. The atmosphere negative pressure generating device is simple in structure, good in heat dissipation performance, stable in the operation process, low in noise and high in reliability. And meanwhile, the anti-interference capability is achieved, the requirements of most working environments can be met, the gas conveying speed is high, the higher gas suction capability is achieved, and the use value is high.

Description

Technical Field

[0001] The utility model relates to the technical field of negative pressure generating equipment, in particular to an atmospheric negative pressure generating device. Background Art

[0002] The negative pressure generating device mainly extracts air and generates negative pressure, which is widely used in various industries. The existing negative pressure generating devices have the following defects when in use:

[0003] 1. The negative pressure generating device may have the problem of weak suction ability due to slow gas transportation, and in this way, the use effect will be very poor.

[0004] 2. It has a relatively large noise during operation, poor anti-interference ability, cannot meet the needs of most working environments, and has limitations in use.

[0005] 3. During operation, the motor and its bearing components cannot be cooled, and are prone to damage.

[0006] In order to solve the above defects, this application discloses an atmospheric negative pressure generating device. Content of the Utility Model

[0007] In order to overcome the deficiencies of the prior art, the utility model discloses an atmospheric negative pressure generating device.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is: an atmospheric negative pressure generating device, including a cooling motor and a negative pressure generator. The cooling motor includes a motor main body and a cooling component, and the cooling component is installed at the front end of the motor main body;

[0009] The negative pressure generator is fixed on the side of the cooling component away from the motor main body;

[0010] The negative pressure generator includes a housing. Inside the housing, a main cavity is axially arranged away from the cooling component, and a water injection cavity is axially arranged close to the cooling component and communicated with the main cavity. On both radial sides of the housing, an air inlet cavity and an air outlet cavity communicated with the main cavity are respectively formed;

[0011] An impeller is installed inside the main cavity, a sealing component matched with the impeller is arranged inside the water injection cavity, and the rotor of the motor main body penetrates through the inside of the cooling component, the sealing component and the impeller.

[0012] Further preferably, the cooling component includes a motor fan and a circular groove seat. The motor fan is arranged inside the front end of the motor main body, the circular groove seat is assembled outside the front end of the motor main body, a bearing seat is axially arranged inside the circular groove seat, a bearing body is embedded inside the bearing seat, and the rotor of the motor main body passes through the motor fan and the bearing body and extends outward.

[0013] The side wall of the circular groove seat is provided with multiple sections of heat dissipation through grooves, and a number of heat dissipation fins are arranged in each section of the heat dissipation through groove.

[0014] Further preferably, an annular step is provided on the outer circle of the circular groove seat, and the front end of the motor main body is press-fitted on the annular step.

[0015] Further preferably, a number of supports are arranged in an annular array on the circumferential side of the circular groove seat, a flange seat is formed at the end of the housing close to the heat dissipation component, and the flange seat and the number of supports are both fixed by bolts.

[0016] Further preferably, a reinforcing rib is connected between the bearing seat and the number of supports.

[0017] Further preferably, the sealing component includes a sealing flap, a corrugated spring and a convex pipe fitting. The sealing flap is arranged on the inner side of the water injection cavity close to the heat dissipation component, the convex pipe fitting is arranged on the other side of the water injection cavity, the corrugated spring is arranged between the sealing flap and the convex pipe fitting, and the rotor of the motor main body passes through the sealing flap, the corrugated spring and the convex pipe fitting and extends outwards.

[0018] Further preferably, an annular blind groove is formed on one side of the impeller close to the water injection cavity, and the convex pipe fitting is inserted into the annular blind groove.

[0019] Further preferably, a water injection channel communicating with the water injection cavity is arranged inside the housing, and a water pipe joint connected to the water injection pipe is arranged on the circumferential side of the housing.

[0020] The present utility model achieves the following beneficial effects:

[0021] The atmospheric negative pressure generating device provided by the present application has a relatively simple structure, good heat dissipation performance, is relatively stable during operation, has relatively low noise, and also has anti-interference ability. It can meet the requirements of most working environments, and the gas transportation is relatively fast, with stronger suction ability, and has a relatively high use value.

[0022] As for other features and advantages of the present utility model, they will be described in the subsequent specification, and will be partially obvious from the specification, or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings here are incorporated into the specification and constitute a part of the specification, showing the embodiments in line with the disclosure of the present utility model, and are used together with the specification to explain the principles of the present disclosure.

[0024] Figure 1 Schematic diagram of the overall structure disclosed by the present utility model;

[0025] Figure 2 First cross-sectional view of the overall structure disclosed by the present utility model (along the direction of the water injection cavity);

[0026] Figure 3 Second cross-sectional schematic diagram of the overall structure disclosed by the present utility model (along the directions of the air inlet cavity and the air outlet cavity);

[0027] Figure 4 Cross-sectional schematic diagram of the negative pressure generator disclosed by the present utility model;

[0028] Figure 5 Back schematic diagram of the present utility model in the working state;

[0029] In the figure: 10, heat dissipation motor; 11, motor main body; 111, rotor; 12, heat dissipation component; 121, circular groove base; 1211, bearing seat; 1212, support; 1213, annular step; 1214, reinforcing rib; 1215, heat dissipation groove; 1216, heat dissipation fin; 122, motor fan; 123, bearing body; 124, bolt; 20, negative pressure generator; 21, housing; 211, main cavity; 212, water injection cavity; 213, air inlet cavity; 214, air outlet cavity; 215, water injection channel; 22, impeller; 221, annular blind groove; 23, sealing component; 231, sealing flap; 232, corrugated spring; 24, flange seat; 233, convex pipe fitting; 30, water pipe joint; 40, crescent-shaped space. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0031] In the description of the present utility model, it should be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or positional relationship are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0032] Embodiment

[0033] To solve a series of problems existing in the negative pressure generating device in the prior art during actual use, refer to Figures 1-4As shown, the present application discloses an atmospheric negative pressure generating device, which includes a cooling motor 10 and a negative pressure generator 20. The cooling motor 10 includes a motor main body 11 and a cooling assembly 12, and the cooling assembly 12 is installed at the front end of the motor main body 11;

[0034] The negative pressure generator 20 is fixed to the side of the cooling assembly 12 away from the motor main body 11;

[0035] The negative pressure generator 20 includes a housing 21. Inside the housing 21, an axial main cavity 211 is provided away from the cooling assembly 12, and a water injection cavity 212 is provided axially close to the cooling assembly 12 and communicating with the main cavity 211. On the radial two sides of the housing 21, an air inlet cavity 213 and an air outlet cavity 214 communicating with the main cavity 211 are respectively formed;

[0036] Inside the main cavity 211, an impeller 22 is installed. Inside the water injection cavity 212, a sealing assembly 23 cooperating with the impeller 22 is provided. The rotor 111 of the motor main body 11 passes through the inside of the cooling assembly 12, the sealing assembly 23 and the impeller 22.

[0037] Reference Figure 5 As shown, when the present application is actually used, a set amount of water is first injected into the water injection cavity 212, and the water in the water injection cavity 212 will flow into the main cavity 211. By controlling the operation of the motor main body 11, reference Figure 4 As shown, the rotor 111 will drive the impeller 22 to rotate at a high speed in the main cavity 211 in the counterclockwise direction to form a water ring. At the same time, a crescent-shaped space 40 is formed between the water ring and the impeller 22. This space will be divided into several small cavities (not shown) by the impeller 22; the crescent-shaped space 40 on the side close to the air inlet cavity 213 gradually becomes larger, forming a negative pressure to generate suction; the crescent-shaped space 40 on the side close to the air outlet cavity 214 gradually becomes smaller, forming a positive pressure to discharge air.

[0038] In one implementation, the cooling assembly 12 of the present application includes a motor fan 122 and a circular groove seat 121. The motor fan 122 is arranged inside the front end of the motor main body 11, the circular groove seat 121 is assembled outside the front end of the motor main body 11. Axially inside the circular groove seat 121, a bearing seat 1211 is provided. Inside the bearing seat 1211, a bearing body 123 is embedded. The rotor 111 of the motor main body 11 passes through the motor fan 122 and the bearing body 123 and extends outward;

[0039] The side wall of the circular groove base 121 is provided with multiple sections of heat dissipation through grooves 1215, and a number of heat dissipation fins 1216 are arranged in each section of the heat dissipation through groove 1215. During the operation of the motor main body 11, the motor fan 122 will rotate synchronously under the drive of the rotor 111 to blow air, and the heat generated by the rotation of the rotor 111 will be evenly discharged from between the number of heat dissipation fins 1216 in the multiple sections of heat dissipation grooves 1215, so as to achieve the heat dissipation effect and avoid damage to the device due to excessive heat.

[0040] In order to fix the circular groove base 121 to the motor main body 11, the present application is provided with an annular step 1213 on the outer circle of the circular groove base 121, and the front end of the motor main body 11 is press-fitted on the annular step 1213. This structural design is relatively simple, the fixing effect is better, and it has strong practicability.

[0041] In addition, in order to fix the heat dissipation component 12 to the negative pressure generator 20, referring to Figure 1 as shown, the present application is provided with a number of supports 1212 arranged in an annular array on the circumferential side of the circular groove base 121. A flange base 24 is formed at the end of the housing 21 close to the heat dissipation component 12, and the flange base 24 and the number of supports 1212 are both fixed by bolts 124.

[0042] As a preferred embodiment of the present application, a reinforcing rib 1214 is connected between the bearing seat 1211 and the number of supports 1212, which can ensure that the bearing seat 1211 will not be damaged during long-term use.

[0043] In one implementation, the sealing component 23 of the present application includes a sealing flap 231, a corrugated spring 232 and a convex pipe fitting 233. The sealing flap 231 is arranged on the inner side of the water injection cavity 212 close to the heat dissipation component 12, the convex pipe fitting 233 is arranged on the other side of the water injection cavity 212, and the corrugated spring 232 is arranged between the sealing flap 231 and the convex pipe fitting 233. The rotor 111 of the motor main body 11 passes through the sealing flap 231, the corrugated spring 232 and the convex pipe fitting 233 and extends outwards. Through the cooperation of the sealing flap 231, the corrugated spring 232 and the convex pipe fitting 233, when the impeller 22 rotates at a high speed, it can prevent water vapor from entering the interior of the motor main body 11 and can also prevent the impeller 22 from moving upwards to compensate the axial force of the impeller 22.

[0044] In order to make the convex pipe fitting 233 closely cooperate with the impeller 22 and prevent it from moving upwards during high-speed rotation, the present application is provided with an annular blind groove 221 on the side of the impeller 22 close to the water injection cavity 212, and the convex pipe fitting 233 is inserted into the annular blind groove 221.

[0045] In one specific embodiment, a water injection channel 215 communicating with the water injection cavity 212 is provided inside the housing 21. A water pipe joint 30 connected to a water injection pipe is provided on the peripheral side of the housing 21 for the water injection channel 215. During specific use, an external water source will enter the water injection cavity 212 and the main cavity 211 through the water pipe joint 30.

[0046] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0047] The above embodiments are only for explaining the technical concept and features of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It is not intended to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. An atmospheric negative pressure generating device, comprising a cooling motor and a negative pressure generator, characterized in that, The heat dissipation motor includes a motor body and a heat dissipation component, and the heat dissipation component is installed at the front end of the motor body; The negative pressure generator is fixed on the side of the heat dissipation component away from the motor body; The negative pressure generator includes a housing. Inside the housing, a main cavity is axially arranged away from the heat dissipation component, and a water injection cavity is axially arranged close to the heat dissipation component and communicated with the main cavity. On both radial sides of the housing, an air inlet cavity and an air outlet cavity communicated with the main cavity are respectively formed; An impeller is installed inside the main cavity, a sealing component matched with the impeller is arranged inside the water injection cavity, and the rotor of the motor body passes through the inside of the heat dissipation component, the sealing component and the impeller.

2. The atmospheric negative pressure generating device according to claim 1, wherein The heat dissipation component includes a motor fan and a circular groove seat. The motor fan is arranged inside the front end of the motor body, the circular groove seat is assembled outside the front end of the motor body, a bearing seat is axially arranged inside the circular groove seat, a bearing body is embedded inside the bearing seat, and the rotor of the motor body passes through the motor fan and the bearing body and extends outwards; A plurality of sections of heat dissipation through grooves are formed on the side wall of the circular groove seat, and a plurality of heat dissipation fins are arranged in each section of heat dissipation through groove.

3. The atmospheric negative pressure generating device according to claim 2, characterized in that, An annular step is arranged on the outer ring of the circular groove seat, and the front end of the motor body is interference-fitted on the annular step.

4. An air negative pressure generating device according to claim 2, characterized in that, A plurality of supports are arranged in a circumferential array on the periphery of the circular groove seat. A flange seat is formed at the end of the housing close to the heat dissipation component, and the flange seat and the plurality of supports are all fixed by bolts.

5. An atmospheric negative pressure generating device according to claim 4, characterized in that, Reinforcing ribs are connected between the bearing seat and the plurality of supports.

6. The atmospheric negative pressure generating device according to claim 1, wherein The sealing component includes a sealing flap, a corrugated spring and a convex pipe fitting. The sealing flap is arranged on the inner side of the water injection cavity close to the heat dissipation component, the convex pipe fitting is arranged on the other side of the water injection cavity, the corrugated spring is arranged between the sealing flap and the convex pipe fitting, and the rotor of the motor body passes through the sealing flap, the corrugated spring and the convex pipe fitting and extends outwards.

7. An atmospheric negative pressure generating device according to claim 6, characterized in that, An annular blind groove is formed on the surface of the impeller close to the water injection cavity, and the convex pipe fitting is inserted into the annular blind groove.

8. An atmospheric negative pressure generating device according to claim 1, characterized in that, A water injection channel communicating with the water injection cavity is arranged inside the housing, and a water pipe joint connected with a water injection pipe is arranged on the periphery of the housing for the water injection channel.

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