Coaxial internal gear pump for energy-saving motor

Abstract

The coaxial internal gear pump comprises a bottom plate, a motor body is installed on one side of the upper end of the bottom plate, the tail end of an output shaft of the motor body is connected with an internal gear pump body through a coupler, and the upper end of the internal gear pump body is sleeved with a protection box; the lower end of the protection box is fixed to the upper end of the bottom plate, and a bearing box is installed at the upper end of the protection box. The temperature of the internal gear pump body can be rapidly and effectively reduced, the problems of sealing piece failure and bearing abrasion caused by too high temperature are avoided, the service life of the pump is prolonged, meanwhile, vibration generated when the pump body works is effectively absorbed, the influence of vibration on the pump body and other parts is reduced, stable operation of the pump is guaranteed, and the service life of the pump is prolonged. The reliability of the whole system is improved, and the service life of key components such as a sealing piece and a bearing of the internal gear pump is prolonged due to the fact that the heat dissipation efficiency is improved and the operation stability is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of internal gear pumps, in particular to a coaxial internal gear pump for an energy-saving electric motor. Background Art

[0002] Internal gear pumps, as a vital fluid-transfer device, are widely used in various systems requiring a high-pressure, stable fluid supply across numerous industrial production areas. However, conventional internal gear pumps face serious heat dissipation challenges when operating under continuous high-pressure conditions. Due to structural design limitations, heat dissipation efficiency is low, leading to a sharp rise in internal pump temperatures, reaching as high as 60-80°C.

[0003] Excessively high temperatures can negatively impact internal gear pumps. Seals can lose their elasticity, age, and deform in high-temperature environments, leading to seal failure and fluid leakage. This not only wastes resources but can also impact the operation of the entire system. Furthermore, high temperatures can lead to significant heat accumulation in bearings, exacerbating bearing wear and reducing their service life, increasing maintenance costs and downtime. To address this issue, we have developed an energy-saving coaxial internal gear pump for electric motors. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an energy-saving coaxial internal meshing gear pump for an electric motor.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A coaxial internal gear pump for an energy-saving electric motor comprises a base plate, a motor body is mounted on one side of the upper end of the base plate, the output shaft end of the motor body is connected to the internal gear pump body through a coupling, the upper end of the internal gear pump body is sleeved with a protection box, the lower end of the protection box is fixed to the upper end of the base plate, a carrying box is mounted on the upper end of the protection box, sliding mechanisms are provided on both sides of the carrying box, an injection mechanism is mounted on the sliding mechanism, a pushing structure is mounted on one side of the protection box, the pushing structure and the sliding mechanism are connected, an air delivery unit is fixed on one side of the protection box, the air delivery unit and the injection mechanism are connected, a fixing plate is mounted on the top four corners of the protection box, a movable groove is provided on the fixing plate, a buffer mechanism is mounted in the movable groove, and the lower end of the buffer mechanism abuts against the four corners of the upper end of the internal gear pump body.

[0006] Preferably, the sliding mechanism includes a fixing rod fixed on two opposite side walls inside the carrying box, and two sliding blocks are sleeved on the fixing rod.

[0007] Preferably, the jet mechanism includes a stud threadedly connected to the slider, a spray rod is fixed between the two studs on the same side, a nut is threadedly connected to the stud, the nut abuts against one side of the slider, the lower end of the spray rod is inclinedly provided with multiple nozzles, and a connecting pipe is connected between the two spray rods.

[0008] Preferably, the upper end of the protection box is provided with a second opening, the lower end of the carrying box is provided with a first opening, and the first opening and the second opening correspond to each other, and the nozzle passes through the first opening and the second opening.

[0009] Preferably, the pushing structure includes a mounting plate fixed on one side of the protective box, a cylinder is fixed on the mounting plate, a fixing part is fixed to the end of the piston rod of the cylinder, two rotating rods are rotatably connected to the fixing part, and a rotating rod on the same side is rotatably connected to the lower end of a slider on the same side.

[0010] Preferably, the gas delivery unit includes a support frame fixed to one side of the protective box, a high-pressure air pump is installed on the support frame, the gas delivery end of the high-pressure air pump is connected to a gas delivery pipe, one end of the gas delivery pipe passes through the carrier box and is connected to the middle of the upper end of the connecting pipe.

[0011] Preferably, the buffer mechanism includes a damper installed on one side of the movable groove, a movable block is installed in the movable groove, one end of the damper is connected to one end of the movable block, two springs are connected to one side of the movable block, the lower end of the spring is connected to a clamping block, the upper end of the clamping block is connected to guide rods on both sides, guide holes are provided on both sides of the fixed plate, a guide rod on the same side passes through a guide hole on the same side, and the lower ends of the four clamping blocks are in contact with the four corners of the upper end of the internal meshing gear pump body.

[0012] Preferably, both sides of the protection box are provided with mounting openings, a heat absorbing plate is installed in the mounting openings, and a plurality of heat dissipation holes are provided at equal intervals around the heat absorbing plate.

[0013] In the present invention: 1. Power drive: After the motor body is started, its output shaft transmits power to the internal gear pump body through the coupling, so that the internal gear pump starts working and realizes the fluid transportation; 2. Heat dissipation preparation: When the internal gear pump body runs under continuous high-pressure conditions for a period of time, the pump body temperature rises and needs to be dissipated. At this time, the high-pressure air pump starts and transmits the high-pressure gas through the air pipe to the connecting pipe, and then distributes it to the spray rod; 3. Movement of the jet mechanism: The cylinder in the push mechanism starts to work, and its piston rod extends and retracts to drive the fixed part to move. The fixed part pushes the slider to slide back and forth on the fixed rod through the rotating rod, thereby driving the spray rod and the nozzle to move back and forth in the protective box; 4. Jet heat dissipation: High-pressure gas is sprayed out from the nozzle at an angle, directly acting on the surface of the internal gear pump body, accelerating the air flow, taking away the heat from the pump body surface, and achieving efficient heat dissipation; 5. Auxiliary heat dissipation: The heat absorbing plates installed on both sides of the protection box absorb the heat emitted by the pump body through the heat dissipation holes and dissipate it to the surrounding environment, further improving the heat dissipation effect; 6. Buffering and shock absorption: During the operation of the pump body, the internal gear pump body will vibrate. The damper and spring in the buffer mechanism work together to absorb and buffer the vibration, reduce the vibration amplitude of the pump body, and ensure the stable operation of the pump.

[0014] The present invention has the following advantages: 1. Through the reciprocating movement of the jet mechanism and the auxiliary heat dissipation of the heat absorbing plate, the temperature of the internal gear pump body can be quickly and effectively reduced, avoiding seal failure and bearing wear caused by excessive temperature, and extending the service life of the pump; 2. Compared with traditional heat dissipation methods, the present invention adopts a high-pressure air pump and an air jet mechanism for heat dissipation, which can more accurately spray the gas to the part that needs heat dissipation, thereby improving the heat dissipation efficiency and reducing energy consumption, thus achieving the purpose of energy saving; 3. The setting of the buffer mechanism effectively absorbs the vibration generated by the pump body during operation, reduces the impact of vibration on the pump body and other components, ensures the stable operation of the pump, and improves the reliability of the entire system; 4. Due to the improved heat dissipation efficiency and enhanced operating stability, the service life of key components such as seals and bearings of the internal gear pump is extended, reducing the maintenance frequency and maintenance costs of the equipment; In summary, the present invention can quickly and effectively reduce the temperature of the internal gear pump body, avoid seal failure and bearing wear problems caused by excessive temperature, and extend the service life of the pump. At the same time, it effectively absorbs the vibration generated when the pump body is working, reduces the impact of vibration on the pump body and other components, ensures the stable operation of the pump, and improves the reliability of the entire system. Due to the improved heat dissipation efficiency and enhanced operating stability, the service life of key components such as seals and bearings of the internal gear pump is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present invention; Figure 2 This is a structural diagram of the connection between the jet mechanism and the sliding mechanism of the present invention; Figure 3 A structural diagram of the buffer mechanism of the present invention is provided; Figure 4 A structural diagram of the second opening arrangement of the present invention; Figure 5 A structural diagram of the first opening arrangement of the present invention; Figure 6 for Figure 1 A magnified view of the structure at point A; Figure 7 for Figure 2 A magnified view of the structure at point B.

[0016] In the figure: 1 high-pressure air pump, 2 air delivery pipe, 3 carrier box, 4 protection box, 5 internal gear pump body, 6 heat absorption plate, 7 coupling, 8 motor body, 9 base plate, 10 cylinder, 11 mounting plate, 12 fixing rod, 13 slider, 14 nozzle, 15 connecting pipe, 16 spray rod, 17 fixing piece, 18 rotating rod, 19 nut, 20 stud, 21 second opening, 22 first opening, 23 mounting port, 24 moving block, 25 spring, 26 fixing plate, 27 clamping block, 28 guide rod, 29 moving groove, 30 damper. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Reference Figure 1-7 , an energy-saving coaxial internal gear pump for an electric motor, comprising a base plate 9, a motor body 8 is mounted on one side of the upper end of the base plate 9, the output shaft end of the motor body 8 is connected to the internal gear pump body 5 through a coupling 7, the upper end of the internal gear pump body 5 is sleeved with a protection box 4, the lower end of the protection box 4 is fixed to the upper end of the base plate 9, the upper end of the protection box 4 is mounted with a carrier box 3, both sides of the carrier box 3 are provided with a sliding mechanism, the sliding mechanism is mounted with an air jet mechanism, one side of the protection box 4 is mounted with a push structure, the push structure and the sliding mechanism are connected, one side of the protection box 4 An air delivery unit is fixed, and the air delivery unit is connected to the jet mechanism. A fixing plate 26 is installed at each of the four corners of the top of the protection box 4. A movable groove 29 is provided on the fixing plate 26. A buffer mechanism is installed in the movable groove 29. The lower end of the buffer mechanism abuts against the four corners of the upper end of the internal gear pump body 5. The lower ends of the four clamping blocks 27 of the buffer mechanism abut against the four corners of the upper end of the internal gear pump body 5. Through the joint action of the damper 30 and the spring 25, the vibration generated by the internal gear pump body 5 during operation is absorbed and buffered, thereby reducing the vibration amplitude of the pump body and ensuring the stable operation of the pump. The sliding mechanism includes a fixed rod 12 fixed to the opposite side walls of the carrier box 3. Two sliders 13 are sleeved on the fixed rod 12. The fixed rod 12 plays a supporting and guiding role, providing a track for the sliding of the sliders 13, making the sliding of the sliders 13 more stable and reducing resistance and wear during the sliding process. The jet mechanism includes a stud 20 threadedly connected to the slider 13. A spray rod 16 is fixed between the two studs 20 on the same side. A nut 19 is threadedly connected to the stud 16. The nut 19 abuts against one side of the slider 13. The lower end of the spray rod 16 is inclined with multiple nozzles 14. The inclined nozzles 14 can spray high-pressure gas at a certain angle to the surface of the internal gear pump body 5, thereby increasing the contact area between the gas and the pump body surface and improving the heat dissipation effect. A connecting pipe 15 connects the two spray bars 16, providing a channel for the high-pressure gas. Nuts 19 are threaded onto studs 20, which abut against one side of the slider 13. Tightening nut 19 secures the spray bars 16 to the slider 13, preventing them from loosening during movement. A second opening 21 is provided at the upper end of the protection box 4, and a first opening 22 is provided at the lower end of the carrier box 3, and the first opening 22 corresponds to the second opening 21. The nozzle 14 passes through the first opening 22 and the second opening 21. The pushing structure includes a mounting plate 11 fixed to one side of the protection box 4, and a cylinder 10 is fixed on the mounting plate 11. A fixing member 17 is fixed to the end of the piston rod of the cylinder 10. Two rotating rods 18 are rotatably connected to the fixing member 17. A rotating rod 18 on the same side is rotatably connected to the lower end of a slider 13 on the same side. When the piston rod of the cylinder 10 is extended or retracted, the linear motion is converted into a reciprocating sliding of the slider 13 on the fixed rod 12 through the transmission of the fixing member 17 and the rotating rod 18, thereby driving the spray rod 16 and the nozzle 14 to reciprocate in the protection box 4; The gas delivery unit includes a support frame fixed to one side of the protective box 4, on which a high-pressure gas pump 1 is mounted. The gas delivery end of the high-pressure gas pump 1 is connected to a gas delivery pipe 2. One end of the gas delivery pipe 2 passes through the carrier box 3 and is connected to the middle of the upper end of the connecting pipe 15. The gas delivery pipe 2 is used to deliver the high-pressure gas generated by the high-pressure gas pump 1 to the connecting pipe 15, and then distribute it to the spray boom 16 through the connecting pipe 15. The buffer mechanism includes a damper 30 installed on one side of the moving groove 29, a moving block 24 is installed in the moving groove 29, one end of the damper 30 is connected to one end of the moving block 24, one side of the moving block 24 is connected to two springs 25, the lower end of the spring 25 is connected to a clamping block 27, the upper ends of the clamping block 27 are connected to guide rods 28 on both sides, guide holes are provided on both sides of the fixed plate 26, a guide rod 28 on the same side passes through a guide hole on the same side, the lower ends of the four clamping blocks 27 are in contact with the four corners of the upper end of the internal gear pump body 5, the damper 30 can absorb and consume vibration energy, and play a buffering role. When the internal gear pump body 5 vibrates, the vibration is transmitted to the moving block 24 through the clamping block 27 and the spring 25, and then buffered by the damper 30; Both sides of the protective box 4 are provided with mounting openings 23, and a heat absorbing plate 6 is installed in the mounting openings 23. A plurality of heat dissipation holes are provided at equal intervals around the heat absorbing plate 6. The material of the heat absorbing plate 6 is aluminum with good thermal conductivity to improve its heat absorption and heat dissipation effects. Since the heat absorbing plate 6 has a large contact area with the outside air, heat can be quickly dissipated to the surrounding environment through the heat dissipation holes, further improving the heat dissipation effect.

[0019] In the present invention: 1. Power drive: After the motor body 8 is started, its output shaft transmits power to the internal gear pump body 5 through the coupling 7, so that the internal gear pump starts working and realizes the fluid transportation; 2. Heat dissipation preparation: After the internal gear pump body 5 has been running continuously under high pressure for a period of time, the pump body temperature rises and needs to be dissipated. At this time, the high-pressure air pump 1 starts and delivers the high-pressure gas through the air pipe 2 to the connecting pipe 15, and then distributes it to the spray rod 16; 3. Movement of the jet mechanism: The air cylinder 10 in the pushing mechanism starts working, and its piston rod extends and retracts to drive the fixing member 17 to move. The fixing member 17 pushes the slider 13 to slide back and forth on the fixing rod 12 through the rotating rod 18, thereby driving the spray rod 16 and the nozzle 14 to reciprocate in the protective box 4; 4. Jet heat dissipation: High-pressure gas is sprayed obliquely from the nozzle 14, directly acting on the surface of the internal gear pump body 5, accelerating the air flow, taking away the heat from the pump body surface, and achieving efficient heat dissipation; 5. Auxiliary heat dissipation: The heat absorbing plates 6 installed on both sides of the protection box 4 absorb the heat emitted by the pump body through the heat dissipation holes and dissipate it to the surrounding environment, further improving the heat dissipation effect; 6. Buffering and shock absorption: During the operation of the pump body, the internal gear pump body 5 will generate vibration. The damper 30 and the spring 25 in the buffer mechanism work together to absorb and buffer the vibration, reduce the vibration amplitude of the pump body, and ensure the stable operation of the pump.

[0020] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A coaxial internal gear pump for an energy-saving electric motor, comprising a base plate (9), characterized in that: A motor body (8) is installed on one side of the upper end of the base plate (9), and the output shaft end of the motor body (8) is connected to the internal gear pump body (5) through a coupling (7). The upper end of the internal gear pump body (5) is sleeved with a protection box (4), and the lower end of the protection box (4) is fixed to the upper end of the base plate (9). A carrier box (3) is installed on the upper end of the protection box (4), and a sliding mechanism is provided on both sides of the carrier box (3). An air jet mechanism is installed on the sliding mechanism. A push structure is installed on one side of the protection box (4), and the push structure is connected to the sliding mechanism. An air delivery unit is fixed on one side of the protection box (4), and the air delivery unit is connected to the air jet mechanism. Fixed plates (26) are installed at the four corners of the top of the protection box (4), and a movable groove (29) is provided on the fixed plate (26). A buffer mechanism is installed in the movable groove (29), and the lower end of the buffer mechanism abuts against the four corners of the upper end of the internal gear pump body (5).

2. The energy-saving coaxial internal gear pump for an electric motor according to claim 1, characterized in that: The sliding mechanism comprises a fixing rod (12) fixed on two opposite side walls inside the carrying box (3), and two sliding blocks (13) are sleeved on the fixing rod (12).

3. The energy-saving coaxial internal gear pump for an electric motor according to claim 2, characterized in that: The jet mechanism includes a stud (20) threadedly connected to a slider (13), a spray rod (16) is fixed between two studs (20) on the same side, a nut (19) is threadedly connected to the stud (16), and the nut (19) abuts against one side of the slider (13), a plurality of spray heads (14) are inclined at the lower end of the spray rod (16), and a connecting pipe (15) is connected between the two spray rods (16).

4. The energy-saving coaxial internal gear pump for an electric motor according to claim 3, characterized in that: The upper end of the protection box (4) is provided with a second opening (21), the lower end of the carrying box (3) is provided with a first opening (22), and the first opening (22) corresponds to the second opening (21), and the nozzle (14) passes through the first opening (22) and the second opening (21).

5. The energy-saving coaxial internal gear pump for an electric motor according to claim 2, characterized in that: The pushing structure comprises a mounting plate (11) fixed to one side of the protection box (4), a cylinder (10) being fixed to the mounting plate (11), a fixing member (17) being fixed to the end of the piston rod of the cylinder (10), two rotating rods (18) being rotatably connected to the fixing member (17), and a rotating rod (18) on the same side being rotatably connected to the lower end of a slider (13) on the same side.

6. The energy-saving coaxial internal gear pump for an electric motor according to claim 3, characterized in that: The gas delivery unit comprises a support frame fixed to one side of the protection box (4), a high-pressure gas pump (1) is mounted on the support frame, a gas delivery end of the high-pressure gas pump (1) is connected to a gas delivery pipe (2), one end of the gas delivery pipe (2) passes through the carrier box (3) and is connected to the middle of the upper end of the connecting pipe (15).

7. The energy-saving coaxial internal gear pump for an electric motor according to claim 1, characterized in that: The buffer mechanism includes a damper (30) installed on one side of a movable groove (29), a movable block (24) is installed in the movable groove (29), one end of the damper (30) is connected to one end of the movable block (24), one side of the movable block (24) is connected to two springs (25), the lower end of the spring (25) is connected to a clamping block (27), the upper ends of the clamping block (27) are connected to guide rods (28) on both sides, guide holes are provided on both sides of the fixed plate (26), a guide rod (28) on the same side passes through a guide hole on the same side, and the lower ends of the four clamping blocks (27) are in contact with the four corners of the upper end of the internal meshing gear pump body (5).

8. The energy-saving coaxial internal gear pump for an electric motor according to claim 1, characterized in that: Both sides of the protection box (4) are provided with mounting openings (23), a heat absorbing plate (6) is installed in the mounting openings (23), and a plurality of heat dissipation holes are provided at equal intervals around the heat absorbing plate (6).

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