Oil-free screw vacuum pump with cooling device

Abstract

The utility model relates to the field of oil-free screw vacuum pumps, in particular to an oil-free screw vacuum pump with a cooling device, which comprises a vacuum pump body, a first mounting plate and a second mounting plate are respectively arranged on one side of the bottom of a motor and one side of the bottom of a main pump body of the vacuum pump body, and a first cooling unit is arranged on the first mounting plate. The first cooling unit and the second cooling unit are arranged on one side of the pump body of the vacuum pump, the fans blow air to cool the pump body of the vacuum pump, cooling of the vacuum pump is achieved, the cooling efficiency is improved, the service life of the vacuum pump is prolonged, the service life of the vacuum pump is prolonged, and the service life of the vacuum pump is prolonged. When the oil-free screw vacuum pump with the cooling device works, the temperature of the pump body can be effectively prevented from being too high, and the fan is matched with the limiting frame and the limiting mechanism, so that the oil-free screw vacuum pump is convenient to disassemble and assemble and convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of oil-free screw vacuum pump technology, and in particular to an oil-free screw vacuum pump with a cooling device. Background Technology

[0002] Oil-free screw vacuum pumps, as a highly efficient and clean vacuum acquisition device, are widely used in fields with high cleanliness requirements, such as semiconductor manufacturing, precision instrument processing, and medical equipment, due to their advantages of oil-free contamination and compact structure. However, during operation, the high-speed rotation of the rotor and the gas compression process in traditional oil-free screw vacuum pumps generate significant heat accumulation. Especially under prolonged high-load conditions, the pump body temperature rises sharply, potentially leading to accelerated rotor thermal expansion, gap seal failure, and consequently, reduced pumping efficiency and shortened equipment lifespan.

[0003] In the existing technology, the heat dissipation requirements of oil-free screw vacuum pumps are mainly met by passive natural heat dissipation, which relies on the natural convection and radiation between the pump body surface and the air. However, this method has low cooling efficiency and is difficult to meet the heat dissipation requirements in continuous operation scenarios. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an oil-free screw vacuum pump with a cooling device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An oil-free screw vacuum pump with a cooling device includes a vacuum pump body. A first mounting plate and a second mounting plate are respectively provided on one side of the bottom of the vacuum pump body and its motor and main pump body. A first cooling unit is provided on the first mounting plate, and a second cooling unit is symmetrically provided on the second mounting plate. Both the first and second cooling units consist of a fan and a mounting bracket. The fan is mounted on the mounting bracket. Limiting brackets are symmetrically provided on the top of the mounting brackets. A limiting mechanism is vertically slidably provided between the limiting brackets on both sides to lock the fan.

[0007] In addition, a preferred structure is that limit blocks are symmetrically arranged on the top of the side walls on both sides of the fan housing. The limit blocks are used to install on the top of the mounting bracket, and each limit block has a limit hole.

[0008] In addition, a preferred structure is that the top of the mounting frame is provided with a mounting base plate, and the mounting base plate is symmetrically provided with mounting holes. The mounting base plate is used to mount on the first mounting plate and the second mounting plate.

[0009] In addition, a preferred structure is that the mounting bracket has a placement opening for placing a fan, and limit blocks are symmetrically arranged on the top of the mounting bracket.

[0010] In addition, a preferred structure is that the limiting frame includes a connecting block, a sliding rod is vertically fixedly connected to the connecting block, the limiting mechanism is vertically slidably fitted on the sliding rods on both sides, and a spring is sleeved on each sliding rod, with the top end of the spring abutting against the top plate of the connecting block and the bottom end of the spring abutting against the limiting mechanism.

[0011] In addition, a preferred structure is that the limiting mechanism includes a pressure plate, which is slidably fitted on slide rods on both sides, and through holes are symmetrically opened at the ends of both sides of the pressure plate.

[0012] In addition, a preferred structure is that a handle is provided on the upper surface of the pressure plate, and limit posts are symmetrically provided on the bottom of the pressure plate, the limit posts being used to engage with the limit holes.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a first cooling unit and a second cooling unit on one side of the vacuum pump body. The vacuum pump body is cooled by airflow driven by a fan. This oil-free screw vacuum pump with a cooling device can effectively prevent the pump body temperature from getting too high when it is working. In addition, the fan, together with the set limit bracket and limit mechanism, makes its disassembly and assembly more convenient and easy to maintain. Attached Figure Description

[0014] Figure 1 A schematic diagram of a vacuum pump body with a first cooling unit and a second cooling unit installed on one side;

[0015] Figure 2 This is a schematic diagram of the vacuum pump body after being separated from the first and second cooling units;

[0016] Figure 3 This is a schematic diagram of the fan and mounting bracket after disassembly.

[0017] Figure 4 This is a structural diagram of the mounting bracket;

[0018] Figure 5 This is a schematic diagram of the structure after the limit mechanism and the limit frame are separated.

[0019] In the diagram: 1 Vacuum pump body, 11 First mounting plate, 12 Second mounting plate, 2 First cooling unit, 3 Second cooling unit, 4 Mounting bracket, 41 Mounting base plate, 411 Mounting hole, 42 Placement port, 43 Limiting block, 5 Fan, 51 Limiting block, 511 Limiting hole, 6 Limiting frame, 61 Connecting block, 62 Spring, 63 Slide rod, 7 Limiting mechanism, 71 Pressure plate, 711 Through hole, 72 Handle, 73 Limiting post. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-5 An oil-free screw vacuum pump with a cooling device includes a vacuum pump body 1. The vacuum pump body 1 has a first mounting plate 11 and a second mounting plate 12 respectively located on the bottom side of its motor and main pump body. The first mounting plate 11 is provided with a first cooling unit 2, and the second mounting plate 12 is symmetrically provided with a second cooling unit 3. The first cooling unit 2 and the second cooling unit 3 are both composed of a fan 5 and a mounting frame 4. The fan 5 is mounted on the mounting frame 4. The top of the mounting frame 4 is symmetrically provided with a limit frame 6. A limit mechanism 7 is vertically slidably provided between the limit frames 6 on both sides. The limit mechanism 7 is used to lock the fan 5. The fan 5 is used for physical cooling to cool the electrodes and main pump body of the vacuum pump.

[0022] Among them, limit blocks 51 are symmetrically arranged on the top of the side walls on both sides of the fan 5 housing. The limit blocks 51 are used to be installed on the top of the mounting bracket 4. Limit holes 511 are opened on the limit blocks 51. The limit blocks 51 are used to be locked by the limit mechanism 7.

[0023] In addition, the top of the mounting frame 4 is provided with a mounting base plate 41, and mounting holes 411 are symmetrically opened on the mounting base plate 41. The mounting base plate 41 is used to install on the first mounting plate 11 and the second mounting plate 12. The mounting frame 4 is provided with a placement opening 42 for placing the fan 5. The top of the mounting frame 4 is symmetrically provided with limit blocks 43 for quick positioning of the limit block 51.

[0024] The limiting frame 6 includes a connecting block 61, on which a sliding rod 63 is vertically fixed. The limiting mechanism 7 is vertically slidably fitted on the sliding rods 63 on both sides. A spring 62 is sleeved on each of the sliding rods 63. The top end of the spring 62 abuts against the top plate of the connecting block 61, and the bottom end of the spring 62 abuts against the limiting mechanism 7. The spring 62 is used to press against the pressure plate 71.

[0025] Furthermore, the limiting mechanism 7 includes a pressure plate 71, which is slidably fitted on the slide rods 63 on both sides. Through holes 711 are symmetrically opened at the ends of both sides of the pressure plate 71. A handle 72 is provided on the upper surface of the pressure plate 71. Limiting posts 73 are symmetrically provided at the bottom of the pressure plate 71. The limiting posts 73 are used to engage with the limiting holes 511 and to hold the limiting block 51.

[0026] In this embodiment, a first cooling unit 2 and a second cooling unit 3 can be added to one side of the vacuum pump body 1. The mounting base plate 41 is installed on the first mounting plate 11 and the second mounting plate 12. Mounting holes are provided on both the first mounting plate 11 and the second mounting plate 12. After the mounting bracket 4 is installed, the fan 5 can be installed. First, the pressure plate 71 is slid upward on the slide rod 63 using the handle 72, so that the spring 62 is closed. This makes it easy for the fan 5 to be placed in the placement opening 42, and the limiting block 51 abuts against the limiting card. At block 43, then release handle 72, causing pressure plate 71 to descend, and limit post 73 can be inserted into limit hole 511, thereby locking limit block 51 and fixing fan 5 at placement port 42. After releasing handle 72, spring 62 releases elastic potential energy, causing spring 62 to press against pressure plate 71. In this way, when disassembling fan 5 for replacement and maintenance, handle 72 can be lifted directly. After fan 5 is powered on and started, the airflow blown by fan 5 can be used to dissipate heat from vacuum pump body 1, achieving cooling.

[0027] In this invention, a first cooling unit 2 and a second cooling unit 3 are provided on one side of the vacuum pump body 1. The fan 5 blows air to dissipate heat from the vacuum pump body 1, thereby cooling the vacuum pump. This oil-free screw vacuum pump with a cooling device can effectively prevent the pump body temperature from becoming too high during operation. Furthermore, the fan 5, together with the limit frame 6 and the limit mechanism 7, makes its disassembly and assembly more convenient and easier to maintain.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An oil-free screw vacuum pump with cooling device, comprising a vacuum pump body (1), a first mounting plate (11) and a second mounting plate (12) are respectively arranged on the bottom side of the motor and the main pump body of the vacuum pump body (1), characterized in that, The first mounting plate (11) is provided with a first cooling unit (2), and the second mounting plate (12) is symmetrically provided with a second cooling unit (3); the first cooling unit (2) and the second cooling unit (3) are both composed of a fan (5) and a mounting frame (4); the fan (5) is mounted on the mounting frame (4); the mounting frame (4) is symmetrically provided with a limiting frame (6) at the top; the limiting mechanism (7) is vertically and slidably arranged between the two limiting frames (6); and the limiting mechanism (7) is used for clamping the fan (5).

2. An oil-free screw vacuum pump with cooling according to claim 1, characterized in that The limiting block (51) is used for being mounted on the top of the mounting frame (4).

3. An oil-free screw vacuum pump with cooling according to claim 2, characterized in that The mounting bottom plate (41) is provided on the top of the mounting frame (4), and symmetrically provided with a mounting hole (411) on the mounting bottom plate (41); and the mounting bottom plate (41) is used for being mounted on the first mounting plate (11) and the second mounting plate (12).

4. An oil-free screw vacuum pump with cooling according to claim 3, characterized in that The mounting frame (4) is provided with a placing opening (42) for placing the fan (5), and the mounting frame (4) is symmetrically provided with a limiting clamping block (43) on the top of the frame body.

5. An oil-free screw vacuum pump with cooling according to claim 1, characterized in that The limiting mechanism (7) is vertically and slidably fitted on the two slide rods (63), and the spring (62) is sleeved on the slide rod (63).

6. An oil-free screw vacuum pump with cooling according to claim 5, characterized in that The limiting mechanism (7) comprises a pressing plate (71), and the pressing plate (71) is slidably fitted on the two slide rods (63).

7. An oil-free screw vacuum pump with cooling according to claim 6, characterized in that The pressing plate (71) is provided with a handle (72) on the upper surface, and the bottom of the pressing plate (71) is symmetrically provided with a limiting column (73) for clamping into the limiting hole (511).

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