CN220600147U - Proportional output type hydraulic pump station - Google Patents

Abstract

The utility model provides a proportional output type hydraulic pump station, which comprises an oil tank, wherein the top of the oil tank is provided with a hydraulic mechanism for outputting hydraulic pressure outwards, the oil tank comprises a tank body, a baffle plate is arranged on an inner side image of the tank body, a frame plate is separated in the middle of the tank body, and an oil supply pipe for supplying hydraulic oil to the hydraulic mechanism and an oil return pipe for returning hydraulic oil to the oil tank are arranged in the tank body. According to the utility model, the cleaning plates arranged in the arc-shaped ring rows in the filter box continuously rotate, so that the impurities of the hydraulic oil adsorbed at the bottom of the first filter screen can be continuously scraped in the process of filtering the hydraulic oil entering the oil supply pipe by the first filter screen, meanwhile, the cleaning plates can rotate to the oil outlet end of the oil return pipe together with the impurities of the hydraulic oil, and under the action of feeding the hydraulic oil into the filter box by the oil return pipe, the impurities of the hydraulic oil cleaned by the cleaning plates can enter the collecting box through the communicating port for filtering and collecting, so that the impurities in the oil tank are fewer, the impurities in the oil tank can be conveniently cleaned and discharged, and the long-term use of the hydraulic pump station is facilitated.

Description

Proportional output type hydraulic pump station

Technical Field

The utility model relates to the technical field of hydraulic pump stations, in particular to a proportional output type hydraulic pump station.

Background

The hydraulic pump station is an independent hydraulic device. It supplies oil according to the step-by-step requirement. And the direction, pressure and flow of the hydraulic oil flow are controlled, so that the hydraulic oil flow control device is applicable to various hydraulic machines with detachable main units and hydraulic devices. The hydraulic machine can realize various specified actions and working cycles only by connecting the hydraulic pump station with an executing mechanism (an oil cylinder or an oil motor) on the host machine through an oil pipe;

in the use process of the existing hydraulic pump station, as shown in the attached figure 7 of the specification, a motor drives an oil pump, hydraulic oil in an oil tank is pumped into the oil pump through an oil supply pipe, and then the oil pump conveys the hydraulic oil to the inside of a hydraulic device (such as a hydraulic rod) through an overflow valve, a throttle valve reversing valve and the like for energy supply;

in actual use, the hydraulic pump station finds that impurities can be generated in the continuous use process of the hydraulic oil in the oil tank, and the hydraulic oil containing the impurities can influence the output effect of the hydraulic pump station to cause the condition of reduced output efficiency or inaccurate output force, so that people can filter the hydraulic oil entering the oil pump by arranging a filter screen at the bottom end of the oil supply pipe;

however, after the hydraulic pump station is used for a long time, impurities of hydraulic oil in the oil tank are increased, so that the quality of the hydraulic oil is affected, a filter screen at the bottom of an oil supply pipe is blocked, and the normal operation of the hydraulic pump station is affected to a certain extent.

In summary, there is a need for a hydraulic pump station that facilitates handling of hydraulic oil impurities and long-term use.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a proportional output type hydraulic pump station, which solves the problems in the background art.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the proportional output type hydraulic pump station comprises an oil tank, wherein the top of the oil tank is provided with a hydraulic mechanism for hydraulic output outwards, the oil tank comprises a tank body, a baffle plate is arranged on an inner side image of the tank body, a frame plate is separated in the middle of the tank body, an oil supply pipe for supplying liquid to the hydraulic mechanism and an oil return pipe for returning hydraulic oil to the oil tank are arranged in the tank body, a cooling mechanism for cooling and radiating the hydraulic oil in the oil tank is transversely arranged in the oil tank body, and a filtering component for treating impurities of the hydraulic oil is arranged at the end part of the oil supply pipe and the end part of the oil return pipe;

the filter assembly comprises a filter box, a second motor and a cleaning plate, the filter box is arranged at the bottom of the inner side of the box body, the second motor is arranged at the top end of the filter box, the cleaning plate is arranged in the filter box and is arc-shaped, the cleaning plates are distributed in a circular row, the top end of the cleaning plate is connected with the output end of the second motor, and the cleaning plate is rotationally connected with the filter box;

the oil supply pipe bottom is equipped with first filter screen, and first filter screen runs through the filter cartridge top surface, and first filter screen bottom surface height is the same with the clearance board topside height, and the oil inlet that supplies hydraulic oil to flow has been seted up to the junction of filter cartridge and oil supply pipe.

Further, the filter assembly further comprises a collection box, a second filter screen is arranged on the outer side of the collection box, a communication port is formed in the joint of the filter box and the collection box, and a cleaning port is formed in the side face of the collection box;

the oil outlet end of the oil return pipe is communicated with the inside of the filter box, and the joint of the oil return pipe and the filter box is positioned below the collecting box.

Further, the hydraulic mechanism comprises a first motor, an oil pump, an overflow valve, a split box, a throttle valve and a proportional reversing valve, wherein the oil pump is arranged at the output end of the first motor, the overflow valve is arranged on the side face of the oil pump, the split box is connected with the side face of the overflow valve through a pipeline, the throttle valve is connected to the side face of the split box, and the proportional reversing valve is arranged at one end, deviating from the split box, of the throttle valve.

Furthermore, the end part of the proportional reversing valve is connected with an oil return pipe, and a plurality of throttle valves and proportional reversing valves are arranged on the side face of the split flow box.

Further, cooling mechanism includes first fan, cooling plate pipe and second fan, and the baffle outside of box one end is located to first fan, and the baffle outside of box other end is located to the second fan, and cooling plate pipe both ends all are connected with the baffle, and cooling tube sheet both ends all run through the baffle, and cooling plate pipe both ends are equipped with the vent, and the wind direction of first fan and second fan is the same.

Further, the cooling plate pipes are vertically provided with a plurality of groups, and a group of cooling plate pipes in the middle transversely penetrate through the oil supply pipe.

Further, the cooling plate pipe penetrates through the separation frame plate, a third fan and a fourth fan are arranged at two ends of the separation frame plate, and the wind directions of the third fan and the fourth fan are the same.

The utility model provides a proportional output type hydraulic pump station. Compared with the prior art, the method has the following beneficial effects:

the cleaning plate that sets up through the arc ring in the filter box constantly rotates, can strike off the absorbing hydraulic oil impurity in first filter screen bottom to the hydraulic oil that gets into oil feed pipe constantly at first filter screen in-process that the hydraulic oil that gets into, simultaneously, the cleaning plate can rotate to the play oily end of returning oil pipe with the hydraulic oil impurity, under the effect of sending into the filter box with hydraulic oil at returning oil pipe, make the hydraulic oil impurity of cleaning plate clearance can get into through the intercommunication mouth and collect in the box and filter and collect, and then make the inside impurity of oil tank less, also conveniently clear up the discharge with the inside impurity of oil tank, the permanent use of this hydraulic pump station of being convenient for.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic diagram of the structure of a proportional output hydraulic pump station of the present utility model;

FIG. 2 shows a schematic side view in cross section of the present utility model;

fig. 3 is a schematic view showing the internal structure of the fuel tank of the present utility model;

FIG. 4 shows a schematic structural view of the cooling mechanism of the present utility model;

FIG. 5 shows a schematic distribution of a cold plate tube of the present utility model;

FIG. 6 shows a schematic view of the structure of the filter assembly of the present utility model;

FIG. 7 shows a schematic diagram of a structure of a conventional hydraulic pump station;

the figure shows: 1. an oil tank; 11. a case; 12. a partition plate; 13. a separation frame plate; 14. an oil supply pipe; 15. an oil return pipe; 16. a first filter screen; 2. a hydraulic mechanism; 21. a first motor; 22. an oil pump; 23. an overflow valve; 24. a shunt box; 25. a throttle valve; 26. a proportional reversing valve; 3. a cooling mechanism; 31. a first fan; 32. a cooling plate tube; 33. a second fan; 34. a third fan; 35. a fourth fan; 4. a filter assembly; 41. a filter box; 411. an oil inlet; 412. a communication port; 42. a second motor; 43. a cleaning plate; 44. a collection box; 441. cleaning the mouth; 45. and a second filter screen.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions in the embodiments of the present utility model are clearly and completely described, and it is obvious that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

In order to solve the technical problems in the background technology, the following proportional output type hydraulic pump station is provided:

referring to fig. 1-6, the proportional output hydraulic pump station provided by the utility model comprises an oil tank 1, wherein a hydraulic mechanism 2 for hydraulic output is arranged at the top of the oil tank 1, the oil tank 1 comprises a tank body 11, a partition plate 12 is arranged at the inner side mirror image of the tank body 11, a frame plate 13 is separated at the middle part of the tank body 11, an oil supply pipe 14 for supplying liquid to the hydraulic mechanism 2 and an oil return pipe 15 for returning hydraulic oil to the oil tank 1 are arranged in the tank body 11, a cooling mechanism 3 for cooling and radiating the hydraulic oil in the oil tank 1 is transversely arranged in the oil tank 1, and a filtering component 4 for treating impurities of the hydraulic oil is arranged at the end part of the oil supply pipe 14 and the end part of the oil return pipe 15; the filtering assembly 4 comprises a filtering box 41, a second motor 42 and a cleaning plate 43, the filtering box 41 is arranged at the bottom of the inner side of the box body 11, the second motor 42 is arranged at the top end of the filtering box 41, the cleaning plate 43 is arranged in the filtering box 41, the cleaning plate 43 is arc-shaped, the cleaning plates 43 are distributed in a circular row, the top end of the cleaning plate 43 is connected with the output end of the motor of the second motor 42, and the cleaning plate 43 is rotationally connected with the filtering box 41; the cleaning plate 43 rotating with the filter box 41 is convenient for cleaning the impurities of the hydraulic oil adsorbed by the first filter screen 16 at the bottom of the oil supply pipe 14, so as to keep the filtering effect of the first filter screen 16 and avoid the impurities from blocking the first cleaning screen; the bottom end of the oil supply pipe 14 is provided with a first filter screen 16, the first filter screen 16 penetrates through the top surface of the filter box 41, the bottom surface of the first filter screen 16 is as high as the top edge of the cleaning plate 43, and an oil inlet 411 for hydraulic oil to flow is formed at the joint of the filter box 41 and the oil supply pipe 14; the oil inlet 411 is arranged, so that hydraulic oil enters the filter box 41 and then enters the oil supply pipe 14 through the first filter screen 16;

in this embodiment, the filter assembly 4 further includes a collecting box 44, a second filter screen 45 is disposed on the outer side of the collecting box 44, a communication port 412 is disposed at a connection portion between the filter box 41 and the collecting box 44, and a cleaning port 441 is disposed on a side surface of the collecting box 44; the communication port 412 is provided to facilitate the hydraulic oil inside the filter cartridge 41 to enter the collection cartridge 44; the second filter screen 45 is arranged to be capable of filtering the hydraulic oil in the collecting box 44 and keeping impurities in the hydraulic oil in the collecting box 44; the oil outlet end of the oil return pipe 15 is communicated with the inside of the filter box 41, and the joint of the oil return pipe 15 and the filter box 41 is positioned below the collecting box 44; through the oil return pipe 15 communicated with the filter box 41, when hydraulic oil flows back into the oil tank 1, the hydraulic oil enters the filter box 41, and the hydraulic oil and impurities in the filter box 41 are sent into the collecting box 44 through the communication port 412, so that the hydraulic oil impurities in the oil tank 1 are conveniently collected in the collecting box 44, and the subsequent impurity cleaning is facilitated;

when the hydraulic pump station is used, the oil supply pipe 14 sends hydraulic oil into the hydraulic mechanism 2, the hydraulic mechanism 2 sends the output hydraulic oil into the oil return tank 1 through the oil return pipe 15, and the hydraulic oil in the oil tank 1 is filtered by impurities and is subjected to temperature control and temperature reduction in cooperation with the filtering mechanism and the cooling component in the oil tank 1, so that the operation output effect of the hydraulic pump station is maintained;

the cleaning plate 43 arranged in the arc-shaped ring row in the filter box 41 continuously rotates, the impurities of the hydraulic oil adsorbed at the bottom of the first filter screen 16 can be continuously scraped off in the process of filtering the hydraulic oil entering the oil supply pipe 14 through the first filter screen 16, meanwhile, the cleaning plate 43 can rotate to the oil outlet end of the oil return pipe 15 together with the impurities of the hydraulic oil, the hydraulic oil is fed into the filter box 41 through the oil return pipe 15, the impurities of the hydraulic oil cleaned by the cleaning plate 43 can enter the collecting box 44 through the communication port 412 for filtering and collecting, and then the impurities inside the oil tank 1 are fewer, the impurities inside the oil tank 1 can be conveniently cleaned and discharged, and the long-term use of the hydraulic pump station is facilitated.

Example two

As shown in fig. 1 to 6, on the basis of the above embodiment, the present embodiment further provides the following:

in order to enable the hydraulic pump station to realize the function of hydraulic output, the following design is given in the embodiment:

the hydraulic mechanism 2 comprises a first motor 21, an oil pump 22, an overflow valve 23, a split flow box 24, a throttle valve 25 and a proportional reversing valve 26, wherein the oil pump 22 is arranged at the output end of the first motor 21, the overflow valve 23 is arranged on the side surface of the oil pump 22, the split flow box 24 is connected with a pipeline on the side surface of the overflow valve 23, the throttle valve 25 is connected on the side surface of the split flow box 24, and the proportional reversing valve 26 is arranged at one end of the throttle valve 25, which is away from the split flow box 24; the relief valve 23 is provided to return a part of the hydraulic oil to the inside of the oil tank 1 when the pressure output from the hydraulic mechanism 2 is excessive; the throttle valve 25 is arranged to adjust and limit the flow rate of hydraulic oil into the proportional reversing valve 26;

in this embodiment, the end of the proportional reversing valve 26 is connected to the oil return pipe 15, and the throttle valve 25 and the proportional reversing valve 26 are both provided with a plurality of throttle valves on the side of the split box 24; the proportional reversing valve 26 correspondingly matched with the throttle valve 25 controls the position of the valve core by adjusting the current in the electromagnetic coil, changes the flow direction and the flow rate of the hydraulic oil, and achieves the purpose of realizing proportional output of the hydraulic oil by the hydraulic pump station.

Example III

As shown in fig. 1 to 6, on the basis of the above embodiment, the present embodiment further provides the following:

in order to enable the hydraulic pump station to realize continuous output of hydraulic oil, the hydraulic oil needs to be ensured to be in a safe temperature range, so the following technical scheme is provided in the embodiment:

the cooling mechanism 3 comprises a first fan 31, a cooling plate pipe 32 and a second fan 33, the first fan 31 is arranged on the outer side of the partition plate 12 at one end of the box 11, the second fan 33 is arranged on the outer side of the partition plate 12 at the other end of the box 11, two ends of the cooling plate pipe 32 are connected with the partition plate 12, two ends of the cooling tube plate penetrate through the partition plate 12, ventilation openings are formed in two ends of the cooling plate pipe 32, and the wind directions of the first fan 31 and the second fan 33 are the same; through the ventilation openings arranged at the two ends of the cooling plate pipe 32, the first fan 31 and the second fan 33 are matched, so that air can be continuously sent into the cooling plate pipe 32, and the purpose of reducing the temperature of the cooling plate pipe 32 is achieved;

in this embodiment, the cooling plate tubes 32 are vertically provided with a plurality of groups, and a group of cooling plate tubes 32 in the middle transversely penetrate through the oil supply tube 14; through the plurality of groups of cooling plate pipes 32, the hydraulic oil in the oil tank 1 is conveniently and uniformly cooled, and the cooling plate pipes 32 penetrating through the oil supply pipe 14 can cool the hydraulic oil in the oil supply pipe 14 to a certain degree under the condition that the flow of the hydraulic oil in the oil supply pipe 14 is not influenced;

as an improvement of the above solution, the cooling plate tube 32 penetrates through the separation frame plate 13, and a third fan 34 and a fourth fan 35 are disposed at two ends of the separation frame plate 13, where the wind directions of the third fan 34 and the fourth fan 35 are the same; through separating the third fan 34 and the fourth fan 35 that the frame board 13 both ends set up, can constantly blow the air on separating the cooling board pipe 32 at the frame board 13 middle part, further cool down the heat dissipation to cooling board pipe 32, and then be convenient for improve cooling board pipe 32 and to the cooling radiating effect of the inside hydraulic oil of oil tank 1, the long-time continuous operation of this hydraulic pump station of being convenient for.

The working principle and the using flow of the utility model are as follows:

when in use:

firstly, the first motor 21 drives the oil pump 22 to pump hydraulic oil in the oil tank 1 into the oil pump 22 through the oil supply pipe 14, then the hydraulic oil is connected with a hydraulic machine to be driven through the overflow valve 23, the split box 24, the throttle valve 25 and the proportional reversing valve 26, and the output hydraulic oil flows back into the oil tank 1 through the oil return pipe 15 after being output;

during the use process:

the hydraulic oil in the oil tank 1 continuously enters the oil supply pipe 14 from the oil tank 1, meanwhile, the output hydraulic oil also flows back to the oil tank 1 from the oil return pipe 15, when the hydraulic oil enters the oil supply pipe 14, the hydraulic oil firstly enters the filter box 41 from the oil inlet 411, then the hydraulic oil enters the oil supply pipe 14 through the first filter screen 16, at the moment, the first filter screen 16 can filter the hydraulic oil continuously entering the oil supply pipe 14, and the hydraulic oil containing impurities is prevented from entering the hydraulic mechanism 2 to influence the hydraulic effect;

then, the second motor 42 drives the cleaning plate 43 arranged in the arc shape in the inner ring row of the filter box 41 to rotate clockwise, the arc-shaped cleaning plate 43 can scrape hydraulic oil impurities adsorbed at the bottom of the first filter screen 16, the cleaning plate 43 can drive the impurities of the hydraulic oil to rotate together after cleaning, when the impurities are driven to the lower part of the communication port 412 by the cleaning plate 43, the hydraulic oil is fed into the filter box 41 by matching with the oil return pipe 15, the impurities of the hydraulic oil can be brought into the collecting box 44 together through the communication port 412, the hydraulic oil entering the collecting box 44 can pass through the second filter screen 45 to return to the inside of the oil tank 1, and the residual hydraulic oil impurities can remain in the collecting box 44, so that the cleanliness of the hydraulic oil in the oil tank 1 can be maintained, and the long-term use of the hydraulic pump station is facilitated;

then, the hydraulic oil foreign substances in the collection box 44 can be discharged through the cleaning port 441;

when the temperature needs to be reduced:

when this hydraulic pump station is operated for a long time, when inside hydraulic oil temperature rises, cooling plate pipe 32 can absorb the heat of hydraulic oil, first fan 31 and second fan 33 work then, send the multiunit cooling plate pipe 32 with the air constantly in, through the flow of air, reduce the temperature of cooling plate pipe 32, simultaneously, third fan 34 and fourth fan 35 constantly blow the air at the middle part of cooling plate pipe 32, further cool down cooling plate pipe 32, the cooling plate pipe 32 of being convenient for cools down the cooling oil of the inside of oil tank 1, keep the hydraulic oil in the oil tank 1 at safe temperature, and then the long-time continuous operation of this hydraulic pump station of being convenient for.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (7)

1. Proportion output formula hydraulic power unit, its characterized in that: the hydraulic oil tank comprises an oil tank (1), a hydraulic mechanism (2) for outputting the hydraulic oil outwards is arranged at the top of the oil tank (1), the oil tank (1) comprises a tank body (11), a partition plate (12) is arranged on the inner side mirror image of the tank body (11), a frame plate (13) is partitioned in the middle of the tank body (11), an oil supply pipe (14) for supplying the hydraulic mechanism (2) with the hydraulic oil and an oil return pipe (15) for returning the hydraulic oil to the oil tank (1) are arranged in the tank (1), a cooling mechanism (3) for cooling and radiating the hydraulic oil in the oil tank (1) is transversely arranged in the oil tank (1), and a filtering component (4) for treating the impurities of the hydraulic oil is arranged at the end part of the oil supply pipe (14) and the end part of the oil return pipe (15);

the filter assembly (4) comprises a filter box (41), a second motor (42) and a cleaning plate (43), wherein the filter box (41) is arranged at the bottom of the inner side of the box body (11), the second motor (42) is arranged at the top end of the filter box (41), the cleaning plate (43) is arranged in the filter box (41), the cleaning plate (43) is arc-shaped, the cleaning plate (43) is distributed in a circular row, the top end of the cleaning plate (43) is connected with the output end of the motor of the second motor (42), and the cleaning plate (43) is rotationally connected with the filter box (41);

the bottom end of the oil supply pipe (14) is provided with a first filter screen (16), the first filter screen (16) penetrates through the top surface of the filter box (41), the bottom surface of the first filter screen (16) is the same as the top edge of the cleaning plate (43), and an oil inlet (411) for hydraulic oil to flow is formed in the joint of the filter box (41) and the oil supply pipe (14).

2. The proportional output type hydraulic pump station according to claim 1, wherein: the filter assembly (4) further comprises a collection box (44), a second filter screen (45) is arranged on the outer side of the collection box (44), a communication port (412) is formed in the joint of the filter box (41) and the collection box (44), and a cleaning port (441) is formed in the side face of the collection box (44);

the oil outlet end of the oil return pipe (15) is communicated with the inside of the filter box (41), and the joint of the oil return pipe (15) and the filter box (41) is positioned below the collecting box (44).

3. The proportional output type hydraulic pump station according to claim 2, wherein: the hydraulic mechanism (2) comprises a first motor (21), an oil pump (22), an overflow valve (23), a split box (24), a throttle valve (25) and a proportional reversing valve (26), wherein the oil pump (22) is arranged at the output end of the first motor (21), the overflow valve (23) is arranged on the side face of the oil pump (22), the split box (24) is connected with the side face of the overflow valve (23) through a pipeline, the throttle valve (25) is connected with the side face of the split box (24), and the proportional reversing valve (26) is arranged at one end, deviating from the split box (24), of the throttle valve (25).

4. A proportional output hydraulic pump station according to claim 3, wherein: the end part of the proportional reversing valve (26) is connected with the oil return pipe (15), and a plurality of throttle valves (25) and the proportional reversing valve (26) are arranged on the side face of the split box (24).

5. The proportional output type hydraulic pump station according to claim 4, wherein: the cooling mechanism (3) comprises a first fan (31), a cooling plate pipe (32) and a second fan (33), wherein the first fan (31) is arranged on the outer side of a partition plate (12) at one end of the box body (11), the second fan (33) is arranged on the outer side of the partition plate (12) at the other end of the box body (11), two ends of the cooling plate pipe (32) are connected with the partition plate (12), two ends of the cooling plate pipe plate penetrate through the partition plate (12), ventilation openings are formed in two ends of the cooling plate pipe (32), and the wind directions of the first fan (31) and the second fan (33) are the same.

6. The proportional output type hydraulic pump station according to claim 5, wherein: the cooling plate pipes (32) are vertically provided with a plurality of groups, and one group of cooling plate pipes (32) in the middle transversely penetrate through the oil supply pipe (14).

7. The proportional output type hydraulic pump station according to claim 6, wherein: the cooling plate pipe (32) penetrates through the separation frame plate (13), and a third fan (34) and a fourth fan (35) are arranged at two ends of the separation frame plate (13), wherein the wind direction of the third fan (34) is the same as that of the fourth fan (35).