Heat dissipation type bidirectional operation gear pump

Abstract

The invention provides a heat dissipation type bidirectional operation gear pump, and relates to the technical field of bidirectional gear pumps. The heat dissipation type two-way operation gear pump comprises a base, a pump shell, a first main shaft, a second main shaft, a temperature sensor, a conductive slip ring, a one-way valve and two groups of working gears. Heat in the pump shell is naturally dissipated through the cooling fins, the first main shaft drives the second permanent magnet block to rotate when rotating, the second permanent magnet block drives the first permanent magnet block to rotate through magnetic adsorption, and then the multiple sets of fan blades located at the front end of the rotating shaft are driven to rotate; room-temperature air is sucked from the front end of the ventilation net through rotation of the multiple sets of fan blades and blown to the outer wall of the pump shell, forced air blowing and heat dissipation are conducted on the outer wall of the pump shell, the cooling effect is effectively improved, extra power does not need to be added, energy is saved, and the multiple sets of fan blades are always kept blowing towards the outer wall of the pump shell through the adjusting structure.

Description

Technical Field

[0001] The invention relates to the technical field of bidirectional gear pumps, in particular to a heat dissipation type bidirectional operation gear pump. Background Art

[0002] A gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gears to transport liquid or increase its pressure. When the gear rotates, the volume of the space on the gear disengagement side changes from small to large, forming a vacuum, sucking the liquid, and the volume of the space on the gear meshing side changes from large to small, squeezing the liquid into the pipeline. The suction chamber and the discharge chamber are separated by the meshing line of the two gears. The pressure of the discharge port of the gear pump depends entirely on the size of the resistance at the pump outlet. There are many types of gear pumps, including internal leakage bidirectional gear pumps with one-way valves, such as the medium-high pressure and high efficiency bidirectional gear pumps proposed in the existing public technology. It is mentioned that in order to improve the technical level of the bidirectional gear pump, a medium-high pressure and high efficiency bidirectional gear pump was studied. The bidirectional gear pump reduces leakage and improves efficiency through automatic compensation of axial clearance and radial clearance; the bidirectional operation of the gear pump is realized by integrating a one-way valve internally; the research results are of great significance to the advancement of bidirectional gear pump technology.

[0003] The existing internal leakage type bidirectional gear pump with a one-way valve has certain disadvantages when used. Long-term continuous operation will cause the temperature of the parts to be too high. The parts are running in an overheated environment, and the probability of failure is greatly increased, which affects their service life. For this reason, there is an improved technology on the market that proposes an internal leakage type bidirectional gear pump with a one-way valve, including a base, a gear pump body is fixedly installed on the top of the base, a pump shell is detachably installed on the front side of the gear pump body by bolts, an input pipe is fixedly connected to one side of the gear pump body by welding, and the interior of the input pipe is interconnected with the interior of the gear pump body, and an output pipe is fixedly connected to the other side of the gear pump body by welding, and the interior of the output pipe is interconnected with the interior of the gear pump body, and the end of the input pipe away from the gear pump body is fixedly installed with a first flange by welding, and the end of the output pipe away from the gear pump body is fixedly installed with a second flange by welding. The improved technology claims that the internal leakage type bidirectional gear pump with a one-way valve can provide temperature protection for the overall structure by rapid cooling, reduce the incidence of failures caused by heat, and increase service life;

[0004] However, the above-mentioned improved technology requires the use of an additional air pump to supplement the pressure, which is not energy-efficient. At the same time, because the heat released by the liquefaction of the gaseous refrigerant needs to be cooled naturally, the means for rapid cooling can only be used once in a short period of time. In summary, it is necessary to optimize and improve the structure of the heat dissipation type bidirectional gear pump to achieve the purpose of stable cooling, avoid failures caused by high temperature, and increase service life. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a heat dissipation type bidirectional operation gear pump, which solves the problems of insufficient energy saving and unstable cooling effect of the heat dissipation type bidirectional operation gear pump in the prior art.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a heat-dissipating bidirectional gear pump, comprising a base, a pump housing, a first main shaft, a second main shaft, a temperature sensor, a conductive slip ring, a one-way valve and two groups of working gears, the pump housing is fixedly connected to the upper wall of the base, the outer wall of the pump housing is provided with a passive heat dissipation structure, a partition is fixedly connected to the inside of the pump housing, the inside of the pump housing is divided by the partition to form a front cavity and a rear cavity distributed front and back, the first main shaft and the second main shaft are rotated in sequence according to the upper and lower distribution and connected between the inner rear wall of the pump housing and the rear wall of the partition, and the two groups of working gears are divided into The two main shafts are fixedly connected to the outer walls of the first main shaft and the second main shaft and are both located inside the rear cavity. The circumferential outer walls of the two groups of working gears are meshed with each other. The front and rear ends of the first main shaft respectively penetrate the inner wall of the partition and the rear wall of the pump casing and extend to the front side of the partition and the rear side of the pump casing respectively. The front wall of the pump casing is detachably connected to a front cover shell, and a protective plate is clamped on the front wall of the front cover shell. The front wall of the protective plate is provided with a ventilation net that passes through the front and back. An active heat dissipation structure for blowing air to the outer wall of the pump casing is provided inside the front cover shell. Connecting pipes are fixedly connected to the left and right sides of the pump casing, and the two groups of connecting pipes are both connected to the inside of the rear cavity.

[0009] Preferably, one end of the first main shaft extending into the front cavity is fixedly connected to a driving gear, the front wall of the partition is located directly below the first main shaft and is rotatably connected to a third driven shaft, the outer wall of the third driven shaft is fixedly connected to the third driven gear, the front wall of the partition is located on the left side of the third driven shaft and is rotatably connected to a second driven shaft, the outer wall of the second driven shaft is fixedly connected to the second driven gear, the second driven gear is meshed with the third driven gear, and an adjustment structure for keeping the third driven gear unchanged when the driving gear is reversed is provided between the driving gear and the second driven gear and the third driven gear, The inner wall of the third driven shaft is provided with a sliding hole that passes through the front end, and the sliding hole is slidably connected with a sliding rod through a clutch structure, and the sliding rod is fixedly connected to the second turntable at one end away from the third driven shaft, and the inner wall of the front cover shell is fixedly connected with a fixing frame, and the inner wall of the fixing frame is rotatably connected with a rotating shaft in a front-to-back penetrating shape, and the end of the rotating shaft facing the front wall of the pump shell is fixedly connected with the first turntable, the first turntable and the second turntable are opposite to each other front and back, and a transmission structure for transmission is provided between the opposite ends of the first turntable and the second turntable, and the active heat dissipation structure is provided at the end of the rotating shaft away from the first turntable.

[0010] Preferably, the passive heat dissipation structure includes heat dissipation fins, and a plurality of groups of the heat dissipation fins are distributed at equal intervals and fixedly connected to the outer wall of the pump casing in sequence, and the length directions of the plurality of groups of the heat dissipation fins are parallel to the front-rear direction of the pump casing.

[0011] Preferably, the active heat dissipation structure includes a plurality of groups of fan blades, the plurality of groups of fan blades are fixedly connected to one end of the rotating shaft away from the first turntable, and the plurality of groups of fan blades are equally distributed in a circle with the axis of the rotating shaft as the center.

[0012] Preferably, the adjustment structure includes a sliding seat, a slider, a first driven shaft and a first driven gear. The sliding seat is fixedly connected to the front wall of the partition and is located between the first main shaft and the third driven shaft. The inner wall of the sliding seat is provided with a sliding groove. The slider is slidably connected to the inner wall of the sliding groove. The first driven shaft is rotatably connected to the front wall of the slider. The first driven gear is fixedly connected to the end of the first driven shaft away from the slider.

[0013] Preferably, the slide groove is an arc groove and the center of the arc groove coincides with the axis of the first main shaft. When the slider abuts against the inner right wall of the slide groove, the first driven gear is simultaneously engaged with the driving gear and the third driven gear. When the slider abuts against the inner left wall of the slide groove, the first driven gear is simultaneously engaged with the driving gear and the second driven gear.

[0014] Preferably, the clutch structure is an electric telescopic rod, which is fixedly connected to the inner rear wall of the sliding hole, the extension shaft of the electric telescopic rod is fixedly connected to the rear end of the sliding rod, and the electric telescopic rod is powered by a conductive slip ring.

[0015] Preferably, the inner wall of the sliding hole is provided with a spline groove, the length direction of the spline groove is parallel to the axis of the sliding hole, the outer wall of the sliding rod is provided with a spline matching the spline groove, and the third driven shaft transmits torque to the sliding rod through the spline and the spline groove.

[0016] Preferably, the transmission structure includes a first permanent magnet block and a second permanent magnet block, the first permanent magnet block and the second permanent magnet block are respectively fixedly connected to the opposite sides of the first turntable and the second turntable, and the opposite sides of the first permanent magnet block and the second permanent magnet block have opposite magnetic properties.

[0017] Preferably, the pump casing is made of aluminum alloy, the inner front wall of the pump casing is provided with a recessed groove opposite to the front and rear of the second turntable, the inner front wall of the pump casing is fixedly connected with a guide sleeve at the mouth of the recessed groove, and the outer wall of the second turntable is slidably connected to the inner wall of the guide sleeve.

[0018] (III) Beneficial effects

[0019] The present invention provides a heat dissipation type bidirectional gear pump. It has the following beneficial effects:

[0020] 1. Compared with the prior art, the heat dissipation type bidirectional gear pump has multiple sets of heat dissipation fins on the outer wall of the pump casing. After the working heat inside the rear cavity is guided to the heat dissipation fins through the pump casing, the heat is transferred to the surrounding air through the contact between the multiple sets of heat dissipation fins and the air, thereby achieving the effect of natural heat dissipation.

[0021] 2. Compared with the prior art, the heat dissipation type bidirectional gear pump monitors the temperature inside the pump through a temperature sensor arranged inside the pump. When the temperature reaches a predetermined value, the second permanent magnet block is pushed close to the first permanent magnet block through the electric telescopic rod. When the first main shaft rotates, the second permanent magnet block is driven to rotate. The second permanent magnet block drives the first permanent magnet block to rotate through magnetic adsorption, and then drives the multiple sets of fan blades located at the front end of the rotating shaft to rotate. Through the rotation of the multiple sets of fan blades, room temperature air is sucked in from the front end of the ventilation net and blown toward the outer wall of the pump casing, and the outer wall of the pump casing is forced to blow air to dissipate heat, which effectively improves the cooling effect, does not require additional power, and is more energy-saving.

[0022] 3. Compared with the prior art, the heat dissipation type bidirectional gear pump solves the problem of bidirectional rotation of the first main shaft by adjusting the structure to ensure that the third driven shaft and the third driven gear rotate in the same direction regardless of the direction of rotation of the first main shaft, thereby ensuring that the blowing direction of multiple sets of fan blades always remains toward the outer wall of the pump casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the connection structure of the pump housing, the base and the front cover housing after the protective plate is removed according to the present invention;

[0025] Figure 3 It is a partial cross-sectional view of the front housing, the fixing frame, the rotating shaft, the plurality of fan blades and the first rotating disk connection structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the back side of the connection structure of the first rotating disk and the first permanent magnet block of the present invention;

[0027] Figure 5 It is a partial cross-sectional view of the internal structure of the pump casing of the present invention;

[0028] Figure 6 It is a partial cross-sectional view of the internal structure of the pump housing after the sliding rod and the second rotating disk of the present invention are removed;

[0029] Figure 7 It is a partial sectional view of the internal structure of the pump casing of the present invention;

[0030] Figure 8 For the present invention Figure 7 A partial enlarged view of the middle A;

[0031] Fig. 9 This is a schematic diagram of the connection structure between the sliding seat and the slider of the present invention;

[0032] Fig.10 It is a partial side sectional view of the connection structure of the third driven shaft, the sliding rod, the electric telescopic rod, the second rotating disk and the second permanent magnet block of the present invention.

[0033] Among them, 1. base; 2. pump casing; 201. sink; 3. connecting pipe; 4. first main shaft; 5. cooling fins; 6. front cover; 7. protective plate; 8. ventilation net; 9. fixing frame; 10. rotating shaft; 11. fan blades; 12. first turntable; 13. first permanent magnet block; 14. partition; 15. driving gear; 16. sliding seat; 1601. slide groove; 17. slider; 18. first driven shaft; 19. first driven gear; 20. second driven shaft; 21. second driven gear; 22. third driven shaft; 2201. sliding hole; 2202. spline groove; 23. third driven gear; 24. sliding rod; 25. second turntable; 26. second permanent magnet block; 27. guide sleeve; 28. electric telescopic rod. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example:

[0036] like Figures 1 to 10As shown, an embodiment of the present invention provides a heat dissipation type bidirectional operation gear pump, including a base 1, a pump housing 2, a first main shaft 4, a second main shaft, a temperature sensor, a conductive slip ring, a one-way valve and two groups of working gears. The pump housing 2 is fixedly connected to the upper wall of the base 1, and a partition 14 is fixedly connected inside the pump housing 2. The interior of the pump housing 2 is divided by the partition 14 to form a front cavity and a rear cavity distributed front and back. The first main shaft 4 and the second main shaft are rotated in sequence according to the upper and lower distribution and are connected between the inner rear wall of the pump housing 2 and the rear wall of the partition 14. The two groups of working gears are respectively fixedly connected to the outer walls of the first main shaft 4 and the second main shaft and are both located inside the rear cavity. The circumferential outer walls of the working gears of the groups are meshed with each other. The front and rear ends of the first main shaft 4 respectively penetrate the inner wall of the partition 14 and the rear wall of the pump casing 2 and extend to the front side of the partition 14 and the rear side of the pump casing 2 respectively. The front wall of the pump casing 2 is detachably connected with the front cover shell 6. The front wall of the front cover shell 6 is clamped with a protective plate 7. The front wall of the protective plate 7 is provided with a ventilation net 8 that penetrates front and back. The left and right sides of the pump casing 2 are fixedly connected with connecting pipes 3. Both groups of connecting pipes 3 are connected with the inside of the rear cavity. The temperature sensor and the conductive slip ring are common technologies on the market. The temperature sensor is used to monitor the internal temperature of the pump casing 2, and the conductive slip ring is used to power the electric telescopic rod 28 during rotation.

[0037] In order to drive the multiple sets of fan blades 11 to rotate and blow air when the first main shaft 4 rotates and keep the multiple sets of fan blades 11 still maintaining the correct blowing direction during bidirectional operation, the end of the first main shaft 4 extending into the front cavity is fixedly connected to a driving gear 15, the front wall of the partition 14 and located directly below the first main shaft 4 is rotatably connected to a third driven shaft 22, the outer wall of the third driven shaft 22 is fixedly connected to a third driven gear 23, the front wall of the partition 14 and located on the left side of the third driven shaft 22 is rotatably connected to a second driven shaft 20, the outer wall of the second driven shaft 20 is fixedly connected to a second driven gear 21, the second driven gear 21 is meshed with the third driven gear 23, and a gear is arranged between the driving gear 15 and the second driven gear 21 and the third driven gear 23. The adjusting structure is used to keep the direction of the third driven gear 23 unchanged when the driving gear 15 is reversed, and the adjusting structure includes a sliding seat 16, a slider 17, a first driven shaft 18 and a first driven gear 19. The sliding seat 16 is fixedly connected to the front wall of the partition 14 and is located between the first main shaft 4 and the third driven shaft 22. A sliding groove 1601 is arranged on the inner wall of the sliding seat 16. The slider 17 is slidably connected to the inner wall of the sliding groove 1601. The first driven shaft 18 is rotatably connected to the front wall of the slider 17. The first driven gear 19 is fixedly connected to the end of the first driven shaft 18 away from the slider 17. The sliding groove 1601 is a circular arc groove and the center of the circular arc groove coincides with the axis of the first main shaft 4. The slider 17 abuts against the inner right wall of the sliding groove 1601. When the first main shaft 4 rotates, the first driven gear 19 is driven to rotate by the driving gear 15. When the first main shaft 4 rotates clockwise in the normal direction, the first driven gear 19 and the slider 17 are driven to slide to the left along the inner wall of the slide groove 1601 until the left side of the slider 17 contacts the left side of the slide groove 1601. At this time, the first driven gear 19 is meshed with the second driven gear 21. When the first main shaft 4 rotates clockwise, the first driven gear 19 and the slider 17 are driven to slide to the left along the inner wall of the slide groove 1601 until the left side of the slider 17 contacts the left side of the slide groove 1601. At this time, the first driven gear 19 is meshed with the second driven gear 21. When the first main shaft 4 rotates clockwise, the driving gear 15, the first driven gear 19, and the second driven gear 21 are driven to rotate. The driven gear 21 drives the third driven gear 23 to rotate counterclockwise, and then drives the rotating shaft 10 to rotate counterclockwise through the transmission structure, driving the multiple sets of fan blades 11 to suck air from the front side of the ventilation net 8 and blow it toward the outer wall of the pump housing 2. When the rotation direction of the first main shaft 4 changes, it drives the first driven gear 19 and the slider 17 to slide rightward along the inner wall of the slide groove 1601 until the right wall of the slider 17 abuts against the inner right wall of the slide groove 1601. At this time, the first driven gear 19 and the third driven gear 23 are meshed. The counterclockwise rotation of the first main shaft 4 can drive the third driven gear 23 to rotate counterclockwise through the first driven gear 19, thereby maintaining the rotation direction of the multiple sets of fan blades 11, ensuring that air is always blown toward the outer wall of the pump housing 2;

[0038] In order to start the fan blades 11 when cooling is required, the inner wall of the third driven shaft 22 is provided with a sliding hole 2201 that penetrates the front end. The sliding hole 2201 is slidably connected with the sliding rod 24 through a clutch structure. The clutch structure is an electric telescopic rod 28. The electric telescopic rod 28 is fixedly connected to the inner rear wall of the sliding hole 2201. The extension shaft of the electric telescopic rod 28 is fixedly connected to the rear end of the sliding rod 24. The electric telescopic rod 28 is powered by a conductive slip ring. The inner wall of the sliding hole 2201 is provided with a spline groove 2202. The length of the spline groove 2202 is square. The third driven shaft 22 transmits torque to the sliding rod 24 through the spline and the spline groove 2202. The extension and retraction of the electric telescopic rod 28 can drive the sliding rod 24 to move axially along the sliding hole 2201. When the electric telescopic rod 28 extends and retracts, the sliding rod 24 and the second permanent magnet block 26 are driven to move backward. The distance between the second permanent magnet block 26 and the first permanent magnet block 13 is too large, and no transmission effect of mutual adsorption occurs.

[0039] In order to avoid increasing the risk of new leakage, the end of the sliding rod 24 away from the third driven shaft 22 is fixedly connected to the second turntable 25, the inner wall of the front cover shell 6 is fixedly connected to the fixing frame 9, the inner wall of the fixing frame 9 is rotatably connected to the rotating shaft 10 in a front-to-back through-shape, and the end of the rotating shaft 10 facing the front wall of the pump housing 2 is fixedly connected to the first turntable 12, the first turntable 12 and the second turntable 25 are opposite to each other in front and back, and a transmission structure for transmission is arranged between the ends opposite to the first turntable 12 and the second turntable 25, and an active heat dissipation structure is arranged on the rotating shaft 1 0 is far away from the end of the first rotating disk 12, the transmission structure includes a first permanent magnet block 13 and a second permanent magnet block 26, the first permanent magnet block 13 and the second permanent magnet block 26 are respectively fixedly connected to the first rotating disk 12 and the second rotating disk 25 on the opposite side, the first permanent magnet block 13 and the second permanent magnet block 26 on the opposite side have opposite magnetic properties, when the electric telescopic rod 28 extends the shaft, the second permanent magnet block 26 is pushed forward and then enters the magnetic adsorption range, and the contactless transmission is realized by the mutual adsorption of the first permanent magnet block 13 and the second permanent magnet block 26;

[0040] The pump housing 2 is made of aluminum alloy. The inner front wall of the pump housing 2 is provided with a sink 201 which is opposite to the second rotary disc 25. A guide sleeve 27 is fixedly connected to the inner front wall of the pump housing 2 and located at the mouth of the sink 201. The outer wall of the second rotary disc 25 is slidably connected to the inner wall of the guide sleeve 27. The aluminum alloy has good heat dissipation effect and is not magnetically isolated, so that the transmission structure can be used smoothly.

[0041] In order to dissipate heat naturally from the pump casing 2 in a non-high temperature state, a passive heat dissipation structure is provided on the outer wall of the pump casing 2. The passive heat dissipation structure includes heat dissipation fins 5. Multiple groups of heat dissipation fins 5 are fixedly connected to the outer wall of the pump casing 2 in sequence according to equal spacing. The length directions of the multiple groups of heat dissipation fins 5 are parallel to the front-to-back direction of the pump casing 2. The heat inside the pump casing 2 is guided to the multiple groups of heat dissipation fins 5 through the pump casing 2. Heat is transferred through the contact between the multiple groups of heat dissipation fins 5 and the external air to achieve the purpose of heat dissipation.

[0042] In order to force air to blow and dissipate heat to the outer wall of the pump casing 2 at high temperatures, an active heat dissipation structure for blowing air to the outer wall of the pump casing 2 is arranged inside the front cover 6, and the active heat dissipation structure includes multiple groups of fan blades 11, and the multiple groups of fan blades 11 are fixedly connected to the end of the rotating shaft 10 away from the first turntable 12, and the multiple groups of fan blades 11 are equally distributed in a circle with the axis of the rotating shaft 10 as the center. When the rotating shaft 10 rotates, the multiple groups of fan blades 11 can inhale room temperature air from the front side of the ventilation net 8 and blow the outer wall of the pump casing 2, thereby forcing air to blow and dissipate heat to the outer wall of the pump casing 2, thereby improving the cooling effect.

[0043] Working principle: When the first main shaft 4 rotates, the first driven gear 19 is driven to rotate through the driving gear 15. When the first main shaft 4 rotates clockwise in the normal direction, the first driven gear 19 and the slider 17 are driven to slide to the left along the inner wall of the slide groove 1601 until the left side of the slider 17 contacts the left side of the slide groove 1601. At this time, the first driven gear 19 is meshed with the second driven gear 21. When the first main shaft 4 rotates clockwise, the driving gear 15, the first driven gear 19, and the second driven gear 21 drive the third driven gear 23 to rotate counterclockwise. The first main shaft 4 rotates clockwise, and then drives the rotating shaft 10 to rotate counterclockwise through the transmission structure, driving the multiple sets of fan blades 11 to suck air from the front side of the ventilation net 8 and blow it to the outer wall of the pump housing 2. When the rotation direction of the first main shaft 4 changes, it drives the first driven gear 19 and the slider 17 to slide to the right along the inner wall of the slide groove 1601 until the right wall of the slider 17 abuts against the inner right wall of the slide groove 1601. At this time, the first driven gear 19 is meshed with the third driven gear 23. The counterclockwise rotation of the first main shaft 4 can drive the third driven gear 23 through the first driven gear 19 The electric telescopic rod 28 extends and retracts the shaft to drive the sliding rod 24 to move axially along the sliding hole 2201. When the electric telescopic rod 28 extends and retracts the shaft, the sliding rod 24 and the second permanent magnet block 26 are driven to move backward. The distance between the second permanent magnet block 26 and the first permanent magnet block 13 is too large, and no transmission effect of mutual adsorption occurs. When the electric telescopic rod 28 extends and the shaft extends, the second permanent magnet block 26 is pushed forward and enters the magnetic field. The absorption range realizes contactless transmission through the mutual absorption of the first permanent magnet block 13 and the second permanent magnet block 26. The aluminum alloy has good heat dissipation effect and is not magnetically isolated, so that the transmission structure can be used smoothly. The internal heat of the pump casing 2 is guided to the multiple groups of heat dissipation fins 5 through the pump casing 2. The heat is transferred through the contact between the multiple groups of heat dissipation fins 5 and the external air to achieve the purpose of heat dissipation. When the shaft 10 rotates, the multiple groups of fan blades 11 can inhale room temperature air from the front side of the ventilation net 8 and blow the outer wall of the pump casing 2, so as to force the outer wall of the pump casing 2 to dissipate heat and improve the cooling effect.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation type bidirectional gear pump, characterized in that: The invention comprises a base (1), a pump casing (2), a first main shaft (4), a second main shaft, a temperature sensor, a conductive slip ring, a one-way valve and two groups of working gears, wherein the pump casing (2) is fixedly connected to the upper wall of the base (1), the outer wall of the pump casing (2) is provided with a passive heat dissipation structure, a partition (14) is fixedly connected to the inside of the pump casing (2), the inside of the pump casing (2) is divided by the partition (14) to form a front cavity and a rear cavity distributed front and back, the first main shaft (4) and the second main shaft are rotatably connected in sequence between the inner rear wall of the pump casing (2) and the rear wall of the partition (14) according to the upper and lower distribution, the two groups of working gears are respectively fixedly connected to the outer walls of the first main shaft (4) and the second main shaft and are both located Inside the rear cavity, the circumferential outer walls of the two groups of working gears mesh with each other, the front and rear ends of the first main shaft (4) respectively penetrate the inner wall of the partition (14) and the rear wall of the pump casing (2) and extend to the front side of the partition (14) and the rear side of the pump casing (2) respectively, the front wall of the pump casing (2) is detachably connected to a front cover shell (6), the front wall of the front cover shell (6) is clamped with a protective plate (7), the front wall of the protective plate (7) is provided with a ventilation net (8) that penetrates from front to back, the interior of the front cover shell (6) is provided with an active heat dissipation structure for blowing air to the outer wall of the pump casing (2), the left and right sides of the pump casing (2) are fixedly connected with connecting pipes (3), and the two groups of connecting pipes (3) are both connected to the interior of the rear cavity.

2. A heat dissipation type bidirectional gear pump according to claim 1, characterized in that: One end of the first main shaft (4) extending into the front cavity is fixedly connected to a driving gear (15); a third driven shaft (22) is rotatably connected to the front wall of the partition (14) and located directly below the first main shaft (4); the outer wall of the third driven shaft (22) is fixedly connected to a third driven gear (23); a second driven shaft (20) is rotatably connected to the front wall of the partition (14) and located on the left side of the third driven shaft (22); a second driven gear (21) is fixedly connected to the outer wall of the second driven shaft (20); the second driven gear (21) is meshed with the third driven gear (23); an adjustment structure for keeping the direction of the third driven gear (23) unchanged when the driving gear (15) is reversed is provided between the driving gear (15) and the second driven gear (21) and the third driven gear (23); the third driven gear (23) is fixedly connected to the second driven gear (21) and the third driven gear (23); The inner wall of the shaft (22) is provided with a sliding hole (2201) which penetrates the front end, and the sliding hole (2201) is slidably connected with a sliding rod (24) through a clutch structure. The sliding rod (24) is fixedly connected with the second turntable (25) at one end away from the third driven shaft (22). The inner wall of the front cover shell (6) is fixedly connected with a fixing frame (9). The inner wall of the fixing frame (9) is rotatably connected with a rotating shaft (10) in a front-to-back through-through shape. The end of the rotating shaft (10) facing the front wall of the pump shell (2) is fixedly connected with a first turntable (12). The first turntable (12) and the second turntable (25) are opposite to each other in front and back. A transmission structure for transmission is provided between the opposite ends of the first turntable (12) and the second turntable (25). The active heat dissipation structure is provided at the end of the rotating shaft (10) away from the first turntable (12).

3. A heat dissipation type bidirectional gear pump according to claim 2, characterized in that: The passive heat dissipation structure comprises heat dissipation fins (5), wherein a plurality of groups of heat dissipation fins (5) are fixedly connected to the outer wall of the pump casing (2) in sequence at equal intervals, and the length directions of the plurality of groups of heat dissipation fins (5) are parallel to the front-rear direction of the pump casing (2).

4. A heat dissipation type bidirectional gear pump according to claim 3, characterized in that: The active heat dissipation structure comprises a plurality of groups of fan blades (11), wherein the plurality of groups of fan blades (11) are fixedly connected to one end of the rotating shaft (10) away from the first rotating disk (12), and the plurality of groups of fan blades (11) are equally distributed in a circle with the axis of the rotating shaft (10) as the center.

5. A heat dissipation type bidirectional gear pump according to claim 4, characterized in that: The adjustment structure comprises a sliding seat (16), a slider (17), a first driven shaft (18) and a first driven gear (19); the sliding seat (16) is fixedly connected to the front wall of the partition (14) and is located between the first main shaft (4) and the third driven shaft (22); a sliding groove (1601) is provided on the inner wall of the sliding seat (16); the slider (17) is slidably connected to the inner wall of the sliding groove (1601); the first driven shaft (18) is rotatably connected to the front wall of the slider (17); and the first driven gear (19) is fixedly connected to the end of the first driven shaft (18) away from the slider (17).

6. A heat dissipation type bidirectional gear pump according to claim 5, characterized in that: The slide groove (1601) is a circular arc groove, and the center of the circular arc groove coincides with the axis of the first main shaft (4); when the slider (17) abuts against the inner right wall of the slide groove (1601), the first driven gear (19) is meshed with the driving gear (15) and the third driven gear (23) at the same time; when the slider (17) abuts against the inner left wall of the slide groove (1601), the first driven gear (19) is meshed with the driving gear (15) and the second driven gear (21) at the same time.

7. A heat dissipation type bidirectional gear pump according to claim 6, characterized in that: The clutch structure is an electric telescopic rod (28), the electric telescopic rod (28) is fixedly connected to the inner rear wall of the sliding hole (2201), the extension shaft of the electric telescopic rod (28) is fixedly connected to the rear end of the sliding rod (24), and the electric telescopic rod (28) is powered by a conductive slip ring.

8. A heat dissipation type bidirectional gear pump according to claim 7, characterized in that: The inner wall of the sliding hole (2201) is provided with a spline groove (2202), the length direction of the spline groove (2202 is parallel to the axis of the sliding hole (2201), the outer wall of the sliding rod (24) is provided with a spline matching the spline groove (2202), and the third driven shaft (22) transmits torque to the sliding rod (24) through the spline and the spline groove (2202).

9. A heat dissipation type bidirectional gear pump according to claim 8, characterized in that: The transmission structure comprises a first permanent magnet block (13) and a second permanent magnet block (26); the first permanent magnet block (13) and the second permanent magnet block (26) are respectively fixedly connected to opposite sides of the first turntable (12) and the second turntable (25); and the opposite sides of the first permanent magnet block (13) and the second permanent magnet block (26) have opposite magnetic properties.

10. A heat dissipation type bidirectional gear pump according to claim 9, characterized in that: The pump housing (2) is made of aluminum alloy. The inner front wall of the pump housing (2) is provided with a recessed groove (201) which is opposite to the second rotating disk (25) in front and back. A guide sleeve (27) is fixedly connected to the inner front wall of the pump housing (2) and located at the mouth of the recessed groove (201). The outer wall of the second rotating disk (25) is slidably connected to the inner wall of the guide sleeve (27).

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