Integrated box type vacuum pump
By integrating a self-circulating cooling system for the box-type vacuum pump, the problems of poor cooling effect and short life of screw vacuum pumps are solved, achieving efficient cooling and preventing impurities from entering, thus extending service life.
Patent Information
- Application Number
- CN202423319416.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing screw vacuum pumps have poor cooling performance and the coolant carries impurities, resulting in a short service life. They cannot effectively improve cooling performance and prevent damage.
Design an integrated box-type vacuum pump that uses a heat exchanger and a liquid storage tank to form a self-circulating cooling system. The coolant circulates between the pump body, motor, heat exchanger and liquid storage tank, and internal cooling is achieved through several pipes to prevent impurities from entering.
This ensures improved cooling of the screw vacuum pump, prevents impurities in the coolant from damaging the pump, and extends its service life.
Smart Images
Figure CN223608797U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to mechanical technical field relates to a kind of integrated box type vacuum pump. BACKGROUND
[0002] Vacuum pump is the device or equipment for obtaining vacuum by using mechanical, physical, chemical or physical-chemical method to pump the container, the common vacuum pump in prior art includes dry screw vacuum pump, water ring pump, reciprocating pump, slide valve pump, rotary vane pump, Roots pump and diffusion pump etc..Among them, screw vacuum pump is the gas suction and exhaust equipment generated by a pair of screw in the pump shell synchronous high-speed reverse rotation, wherein the transmission shaft of motor is connected with driving rotor (i.e. one of screw), and driving rotor (i.e. the other screw) is rotated by synchronous gear, so as to realize the operation of screw vacuum pump.
[0003] In addition to the above structure, screw vacuum pump also needs to be cooled by circulating coolant during operation to avoid overheating, and in the prior art, considering the production cost, screw vacuum pump and other devices usually share a cooling circulation system, in other words, the cooling liquid delivered by pipeline is sequentially passed through each device and screw vacuum pump to realize heat exchange and cooling.
[0004] However, the defects of such setting are also obvious, before cooling screw vacuum pump, cooling liquid may have been circulated in other devices for many times, which causes the temperature of cooling liquid to rise significantly compared with initial state, thereby causing unsatisfactory cooling effect of screw vacuum pump. Secondly, cooling liquid may carry many impurities during external circulation cooling process, which may cause irreversible damage to screw vacuum pump and shorten its service life. SUMMARY
[0005] The utility model aims at the above problems existing in prior art, and proposes a kind of integrated box type vacuum pump, and the technical problem to be solved by the utility model is: how to improve the cooling effect of screw vacuum pump while ensuring its service life.
[0006] The utility model discloses a purpose can be realized through the following technical scheme: a kind of integrated box type vacuum pump, including the pump body and motor that are connected together, it is characterized in that, the integrated box type vacuum pump further includes heat exchanger and liquid storage tank, the heat exchanger and the motor are arranged in front and back, the liquid storage tank is located the rear end oblique upper side of the motor, the heat exchanger is located the rear end oblique lower side of the motor, the heat exchanger and the motor are connected by first liquid inlet pipe, the motor and the pump body are connected by second liquid inlet pipe, the pump body and the liquid storage tank are connected by liquid outlet pipe, the liquid storage tank and the heat exchanger are connected by liquid return pipe, and the first liquid inlet pipe is connected with circulating pump.
[0007] Compared with the prior art, under the premise that the pump body is driven by the motor to operate, the heat exchanger and the liquid storage tank are additionally provided, the heat exchanger and the motor are connected by the first liquid inlet pipe, the motor and the pump body are connected by the second liquid inlet pipe, the pump body and the liquid storage tank are connected by the liquid outlet pipe, and the liquid storage tank and the heat exchanger are connected by the liquid return pipe. In the operation process, the cooling liquid is input into the motor to exchange heat and cool the motor under the action of the circulating pump on the first liquid inlet pipe, and then is input into the pump body through the second liquid inlet pipe to exchange heat and cool the pump body. After the above process is completed, the cooling liquid is input into the liquid storage tank through the liquid outlet pipe for storage, and the cooling liquid can enter the heat exchanger for cooling and cooling under the action of the circulating pump through the liquid return pipe. The above circulation is repeated. Through the arrangement of the structure, the cooling and cooling of the vacuum pump form a self-circulation, the cooling effect is poor when the cooling circulation system is shared with other devices is avoided, and the damage of the vacuum pump caused by impurities carried in the cooling liquid is prevented, the service life of the vacuum pump is effectively improved, and it is worth mentioning that the pump body and the motor are arranged in front and back in the application, the liquid storage tank is arranged obliquely above the rear end of the motor, and the heat exchanger is arranged obliquely below the rear end of the motor, so as to ensure the rationality of the layout, ensure that the cooling liquid output cooling effect meets the standard, and ensure the backflow cooling efficiency of the cooling liquid. In addition, the heat exchanger used in the application can be a water-cooled heat exchanger, and as an alternative, an air-cooled heat exchanger can also be used.
[0008] In the integrated box type vacuum pump, the motor has a flow channel one, the inlet end of the flow channel one is communicated with the first liquid inlet pipe, and the outlet end of the flow channel one is communicated with the second liquid inlet pipe. The first liquid inlet pipe and the second liquid inlet pipe are connected through the flow channel one, so that the cooling liquid pumped out by the circulating pump can cool the rotor and the stator in the motor in the flow channel one, and after the circulation is completed, the cooling liquid is output from the flow channel one through the second liquid inlet pipe.
[0009] In the integrated box type vacuum pump, the pump body comprises a main body and a front cover fixed to the front end of the main body, a front cooling cavity is formed between the front cover and the front end of the main body, the main body has a flow channel two with an outlet end communicating with a liquid outlet pipe, and a third liquid inlet pipe is connected between the front cover and the main body to communicate the front cooling cavity and the inlet end of the flow channel two. After the cooling liquid enters the pump body through the second liquid inlet pipe, specifically enters the front cooling cavity formed in the pump body, the internal part of the front end of the main body is heat exchanged by the cooling liquid, and after the heat exchange, the cooling liquid enters the flow channel two arranged in the main body of the pump body through the third liquid inlet pipe, and the heat generated by the screw working in the main body is heat exchanged, and finally flows back to the liquid storage tank through the outlet end of the flow channel two and the liquid outlet pipe.
[0010] In the integrated box type vacuum pump, the pump body further comprises a rear cover fixed to the rear end of the main body, the shell of the motor is fixed to the rear cover, a rear cooling cavity is formed between the rear cover and the rear end of the main body, the fourth liquid inlet pipe is connected to the second liquid inlet pipe through a three-way joint, the main body has a flow channel three, one end of the flow channel three communicates with a liquid outlet pipe, and the other end penetrates the rear cooling cavity and is connected with the fourth liquid inlet pipe. While the above cooling cycle is performed, part of the cooling liquid is branched at the first liquid inlet pipe through the three-way joint, and is input into the flow channel three through the fourth liquid inlet pipe. The cooling liquid can heat exchange the heat remaining in the rear cooling cavity when flowing in the flow channel three, and finally flows back to the liquid storage tank through the outlet end of the flow channel three and the liquid outlet pipe.
[0011] In the integrated box type vacuum pump, the integrated box type vacuum pump further comprises an electrical control cabinet, and the pump body, the motor, the heat exchanger and the liquid storage tank are fixed in the electrical control cabinet. The pump body, the motor, the heat exchanger and the liquid storage tank are modularly arranged in the electrical control cabinet, and the cooling liquid is circulated in the cabinet through a plurality of pipelines to realize internal circulation among the pump body, the motor, the heat exchanger and the liquid storage tank, so as to ensure the heat exchange effect and avoid a large amount of impurities in the cooling liquid.
[0012] Compared with the prior art, the integrated box type vacuum pump has the following advantages:
[0013] 1. The cooling system is formed by a plurality of pipelines, a heat exchanger and a liquid outlet pipe to realize internal self-circulation of the pump body and the motor in the electrical control cabinet, so as to ensure the heat exchange and cooling effect of the pump body and the motor, and prevent too many impurities from being mixed in the cooling liquid to cause damage to the motor and the pump body.
[0014] 2. The pump body and the motor are arranged in front of and behind the electrical control cabinet to ensure normal transmission, the liquid storage tank is located obliquely above the rear end of the motor, and the heat exchanger is located obliquely below the rear end of the motor, so as to realize rational arrangement, ensure reasonable arrangement of each component, and ensure normal supply and return of the cooling liquid. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 This is a structural schematic diagram of the integrated box-type vacuum pump.
[0016] Figure 2 This is a schematic diagram of the coolant circulation in this integrated box-type vacuum pump.
[0017] In the diagram, 1. Pump body; 11. Main body; 12. Front cover; 121. Front cooling chamber; 13. Flow channel two; 14. Rear cover; 141. Rear cooling chamber; 15. Flow channel three; 2. Motor; 21. Flow channel one; 3. Heat exchanger; 4. First inlet pipe; 41. Circulation pump; 5. Second inlet pipe; 51. Fourth inlet pipe; 6. Return pipe; 7. Third inlet pipe; 8. Electrical control cabinet; 9. Outlet pipe; 10. Storage tank. Detailed Implementation
[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0019] like Figure 1 and Figure 2 As shown, this integrated box-type vacuum pump includes an electrical control cabinet 8, as well as a pump body 1, a motor 2, a liquid storage tank 10, and a heat exchanger 3 installed in the electrical control cabinet 8. The motor 2 is located behind the pump body 1 and is connected to the pump body 1 via a drive shaft and a drive screw. The liquid storage tank 10 is located diagonally above the rear end of the motor 2, and the heat exchanger 3 is located diagonally below the rear end of the motor 2.
[0020] like Figure 2 As shown, the pump body 1 is specifically composed of three parts: a front cover 12, a main body 11, and a rear cover 14. The screw is rotatably connected to the main body 11. The front cover 12 is fixed to the front end of the main body 11 and forms a front cooling cavity 121 between the front end of the main body 11 and the front end of the main body 11. A front bearing cavity is also formed between the two. The front bearing cavity and the front cooling cavity are adjacent or close to each other, but they are not connected. The rear cover 14 is fixed to the rear end of the main body 11 and forms a rear cooling cavity 141 between the rear end of the main body 11 and the rear end of the main body 11.
[0021] like Figure 2As shown, a flow channel 21 is provided in the motor 2, and a flow channel 2 13 is provided in the main body 11 surrounding the screw. The heat exchanger 3 and the motor 2 are connected by a first inlet pipe 4, which connects the outlet of the heat exchanger 3 with the inlet of the flow channel 21. A circulation pump 41 is installed on the first inlet pipe 4. The motor 2 and the front cover 12 are connected by a second inlet pipe 5, which connects the outlet of the flow channel 21 with the inlet of the pre-cooling chamber 121. The front cover 12 and the main body 11 are connected by a third inlet pipe 7, which connects the outlet of the pre-cooling chamber 121 with the inlet of the flow channel 2 13. The main body 11 and the storage tank 10 are connected by an outlet pipe 9, which connects the outlet of the flow channel 2 13 with the inlet of the storage tank 10. The storage tank 10 and the heat exchanger 3 are connected by a return pipe 6, which connects the storage tank 10 with the heat exchanger 3. The outlet of 0 is connected to the inlet of heat exchanger 3. It is worth mentioning that heat exchanger 3 can adopt existing technology. In this application, it can be understood as an existing plate heat exchanger. After the coolant is cooled by heat exchange through heat exchanger 3, it enters the flow channel 21 in motor 2 through the first inlet pipe 4 under the suction of circulating pump 41 to cool the rotor and stator in motor 2. Then, it is fed into the front cooling chamber 121 through the second inlet pipe 5 and exchanges heat with the lubricating oil in the front bearing chamber. Then, it enters the flow channel 15 through the third inlet pipe 7 to exchange heat with the screw in the main body 11. Then, it is fed into the storage tank 10 through the outlet pipe 9 for temporary storage. Finally, the storage tank 10 feeds the coolant at high temperature into heat exchanger 3 through return pipe 6 for recooling and to repeat the above cycle.
[0022] like Figure 2 As shown, the main body 11 is also provided with a flow channel 3 15 that connects the outlet end and the liquid outlet pipe 9, and the other end of the flow channel 3 15 passes through the rear cooling chamber 141. A fourth liquid inlet pipe 51 is connected to the second liquid inlet pipe 5 through a tee. The fourth liquid inlet pipe 51 is connected to the rear side cover 14 and connects to the outlet end of the flow channel 3 15. That is to say, after the coolant enters the second liquid inlet pipe 5, it is split at the tee. A part of the coolant is input into the flow channel 3 15 through the fourth liquid inlet pipe 51. When this part of the coolant flows in the flow channel 3 15, it can exchange heat with the lubricating oil of the rear gear of the pump body 1 in the rear cooling chamber 141. Then, together with the coolant in the flow channel 2 13, it is input into the storage tank 10 through the liquid outlet pipe 9.
[0023] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
[0024] Although the pump body 1, the main body 11, the front cover 12, the front cooling cavity 121, the flow channel two 13, the rear cover 14, the rear cooling cavity 141, the flow channel three 15, the motor 2, the flow channel one 21, the heat exchanger 3, the first liquid inlet pipe 4, the circulating pump 41, the second liquid inlet pipe 5, the fourth liquid inlet pipe 51, the liquid return pipe 6, the third liquid inlet pipe 7, the electrical control cabinet 8, the liquid outlet pipe 9, the liquid storage tank 10 and other terms are used more in this article, but the possibility of using other terms is not excluded. Using these terms is only to facilitate the description and explanation of the essence of the utility model; it is contrary to the spirit of the utility model to interpret them as any kind of additional limitation.
Claims
1. An integrated box-type vacuum pump comprising a pump body (1) and a motor (2) which are connected together by a transmission, characterized in that, The integrated box type vacuum pump further comprises a heat exchanger (3) and a liquid storage tank (10), the heat exchanger (3) and the motor (2) are arranged in front of and behind each other, the liquid storage tank (10) is located obliquely above the rear end of the motor (2), the heat exchanger (3) is located obliquely below the rear end of the motor (2), the heat exchanger (3) and the motor (2) are connected through a first liquid inlet pipe (4), the motor (2) and the pump body (1) are connected through a second liquid inlet pipe (5), the pump body (1) and the liquid storage tank (10) are connected through a liquid outlet pipe (9), the liquid storage tank (10) and the heat exchanger (3) are connected through a liquid return pipe (6), and a circulating pump (41) is connected to the first liquid inlet pipe (4).
2. The integrated box vacuum pump of claim 1, wherein, The motor (2) has a flow channel one (21) therein, an inlet end of the flow channel one (21) is communicated with the first liquid inlet pipe (4), and an outlet end of the flow channel one (21) is communicated with the second liquid inlet pipe (5).
3. The integrated box vacuum pump of claim 1 or 2, wherein, The pump body (1) comprises a main body (11) and a front cover (12) fixed to the front end of the main body (11), a front cooling cavity (121) is formed between the front cover (12) and the front end of the main body (11), the main body (11) has a flow channel two (13) with an outlet communicated with the liquid outlet pipe (9), and a third liquid inlet pipe (7) is connected between the front cover (12) and the main body (11) and communicated with the front cooling cavity (121) and an inlet end of the flow channel two (13).
4. The integrated box vacuum pump of claim 3, wherein, The pump body (1) further comprises a rear cover (14) fixed to the rear end of the main body (11), a shell of the motor (2) is fixed to the rear cover (14), a rear cooling cavity (141) is formed between the rear cover (14) and the rear end of the main body (11), a fourth liquid inlet pipe (51) is connected to the second liquid inlet pipe (5) through a three-way pipe, and the main body (11) has a flow channel three (15) therein, one end of the flow channel three (15) is communicated with the liquid outlet pipe (9), and the other end of the flow channel three (15) penetrates into the rear cooling cavity (141) and is connected with the fourth liquid inlet pipe (51).
5. The integrated box vacuum pump of claim 4, wherein, The integrated box type vacuum pump further comprises an electrical control cabinet (8), the pump body (1), the motor (2), the heat exchanger (3) and the liquid storage tank (10) are fixed in the electrical control cabinet (8).