Impeller pump

By adopting inclined balance holes, damping elastic parts, traction ropes and warning structures in the impeller pump, the problem of debris inside the impeller pump is solved, the installation efficiency and the normal use of the cooling system are improved, and new energy vehicles are ensured security.

CN119467418APending Publication Date: 2025-02-18CHONGQING COLLEGE OF ELECTRONICS ENG +1
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Patent Information

Application Number
CN202411701058.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-26
Publication Date
2025-02-18

AI Technical Summary

Technical Problem

When the impeller pump is not in use, debris may fall into the interior, affecting normal use, resulting in a long-term cleaning, which increases labor burden and installation time.

Method used

An impeller pump is designed, using inclined balance holes and damping elastic members to reduce impeller resistance and maintain balance; at the same time, the design of the second traction rope and the positioning connection screw improves the installation efficiency and stability; in cooling An expansion water stop strip and a sliding warning ring are installed at the liquid output and input ports to promptly remind the leakage and prevent debris from entering through a sealing baffle.

Benefits of technology

It realizes a more stable operation of the impeller pump, reduces cleaning time and labor burden, improves installation efficiency and normal use of the cooling system, and ensures the safety of the use of new energy vehicles.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides an impeller pump, which relates to the field of cooling pumps, and comprises an impeller pump main body, a cooling liquid output port, a cooling liquid input port, an impeller, a positioning mounting bracket, a transmission connecting shaft, a plugging baffle plate and a buffer pressurizing plate, the cooling liquid output port is fixedly connected to the rear side of the impeller pump body. The cooling liquid input port is fixedly connected to the rear side of the impeller pump body. The impeller is arranged on the inner side of the impeller pump main body; the positioning mounting brackets are fixedly connected to the left and right sides of the impeller pump main body; the buffer pressurizing plate is positioned above the positioning mounting bracket; the transmission connecting shaft is rotationally connected to the outer side of the cooling liquid output port and the outer side of the cooling liquid input port. The blocking baffle is fixedly connected to the outer side of the transmission connecting shaft; according to the impeller pump, sundries can be prevented from falling into the impeller pump, cleaning of the impeller pump is effectively avoided, the labor burden of workers is reduced, and the problem that the sundries easily fall into the impeller pump from an input pipe opening or an output pipe opening, and consequently the impeller pump needs to be cleaned before being used is solved.
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Description

Technical Field

[0001] The invention relates to the technical field of cooling pumps, and in particular to an impeller pump. Background Art

[0002] The coolant in the cooling system of new energy vehicles needs to be transported by an impeller pump. Most impeller pumps are composed of a pump body, a rotating shaft, an impeller, an inlet pipe and an outlet pipe. When the impeller pump is running, the impeller will rotate continuously, and the coolant will be sucked in, compressed and discharged through the rotation of the impeller, so that the coolant can flow at high speed in the cooling pipe, providing good cooling for new energy vehicles and ensuring the reliability and safety of the vehicle.

[0003] However, when the impeller pump is not put into use, it is easy for debris to fall into the impeller pump from the inlet or outlet pipe and affect the normal use of the impeller pump, resulting in the impeller pump needing to be cleaned before use, which takes a long time and also causes a heavy labor burden on the user, affecting the use effect of the impeller pump. Summary of the invention

[0004] In view of this, the present invention provides an impeller pump, which can make the fluid more uniform, reduce the resistance of the impeller, make the impeller run more stably, ensure the use effect of the new energy vehicle cooling system, improve the installation efficiency of the impeller pump, save a lot of time, reduce the labor burden of the staff, prevent the positioning connection screw from loosening, ensure the installation stability of the impeller pump, and when leakage occurs at the connection between the impeller pump and the coolant delivery pipe, it can promptly remind the staff to promptly inspect the leakage, effectively ensure the normal use of the cooling system, avoid the situation where leakage of the cooling system affects the normal operation of the new energy vehicle, improve the use safety of the new energy vehicle, can prevent debris from falling into the impeller pump, effectively avoid the cleaning of the impeller pump, reduce the labor burden of the staff, and improve the use effect of the impeller pump.

[0005] The present invention provides an impeller pump with a purpose and effect, which specifically includes: an impeller pump body, a coolant outlet, a coolant inlet, an impeller, a positioning and mounting bracket, a buffer structure, a transmission connecting shaft, a shielding structure, a warning structure, a blocking baffle and a buffer pressure plate; the coolant outlet is fixedly connected to the rear side of the impeller pump body; the coolant inlet is fixedly connected to the rear side of the impeller pump body; the impeller is arranged on the inner side of the impeller pump body; two positioning and mounting brackets are provided, and the two positioning and mounting brackets are respectively fixedly connected to the left and right sides of the impeller pump body; two buffer structures are provided, and the two buffer structures are respectively arranged on the upper sides of the two positioning and mounting brackets The invention relates to a method for manufacturing a cooling device for cooling the cooling liquid and the cooling liquid inlet. The cooling device comprises a plurality of cooling elements, each of which is a plurality of cooling elements. The cooling device comprises a plurality of cooling elements, each of which is a plurality of cooling elements. The cooling device comprises a plurality of cooling elements, each of which is a plurality of cooling elements. The cooling device comprises a plurality of cooling elements, each of which is a plurality of cooling elements. The cooling device comprises a plurality of cooling elements, each of which is a plurality of cooling elements. The cooling device comprises a plurality of cooling elements, each of which is a plurality of cooling elements.

[0006] Furthermore, the warning structure includes an expansion water stop strip and a sliding warning ring; two expansion water stop strips are provided, and the two expansion water stop strips are respectively bonded to the inner side of the coolant outlet and the inner side of the coolant inlet; two sliding warning rings are provided, and the two sliding warning rings are respectively slidably connected to the inner side of the coolant outlet and the inner side of the coolant inlet.

[0007] Furthermore, the warning structure also includes a guide limit block and a reset elastic member; there are multiple guide limit blocks, and the multiple guide limit blocks are evenly distributed and fixedly connected to the outer sides of the two sliding warning rings, and the multiple guide limit blocks are respectively slidably connected to the coolant outlet or the coolant inlet; there are multiple reset elastic members, and the multiple guide limit blocks are elastically connected to the coolant outlet or the coolant inlet through the multiple reset elastic members.

[0008] Furthermore, the warning structure also includes a limit squeeze plate and an audible and visual alarm; two limit squeeze plates are provided, and the two limit squeeze plates are respectively fixedly connected to the outer sides of the two sliding warning rings; two audible and visual alarms are provided, and the two audible and visual alarms are respectively bolted to the upper part of the coolant outlet and the upper part of the coolant inlet; start buttons are provided on the upper part of the coolant outlet and the upper part of the coolant inlet.

[0009] Furthermore, the shielding structure includes a transmission winding shaft and a first traction rope; two transmission winding shafts are provided, and the two transmission winding shafts are rotatably connected to the front side of the coolant outlet and the front side of the coolant inlet respectively; the first traction rope is fixedly connected to the upper end surface of the buffer pressure plate on the right, and the first traction rope is wound around the outside of the transmission winding shaft on the front side of the coolant outlet and then fixedly connected to the transmission winding shaft on the front side of the coolant inlet.

[0010] Furthermore, the shielding structure also includes a first bevel gear, a reset spiral spring and a second bevel gear; two first bevel gears are provided, and the two first bevel gears are respectively fixedly connected to the rear sides of the two transmission winding shafts; two reset spiral springs are provided, and the two transmission winding shafts are respectively elastically connected to the coolant outlet or the coolant inlet through the two reset spiral springs; two second bevel gears are provided, and two second bevel gears are respectively fixedly connected to the inner sides of the two transmission connecting shafts, and the two second bevel gears are respectively meshed with the two first bevel gears.

[0011] Furthermore, the buffer structure includes a balancing hole and a damping elastic member; there are multiple balancing holes, and a circular array of multiple balancing holes is opened on the inner side of the impeller, and the balancing holes are an inclined structure; there are multiple damping elastic members, and the two buffer pressure plates are elastically connected to the two positioning and mounting brackets through the multiple damping elastic members respectively.

[0012] Furthermore, the buffer structure also includes a positioning and connecting screw, a limiting winding ring and a second traction rope; four positioning and connecting screws are provided, and the four positioning and connecting screws are respectively rotatably connected to the front and rear sides of the two buffer pressure plates, and the four positioning and connecting screws are respectively threadedly connected to the front and rear sides of the two positioning mounting brackets; four limiting winding rings are provided, and the four limiting winding rings are respectively fixedly connected to the upper parts of the four positioning and connecting screws; two second traction ropes are provided, and the front and rear ends of the two second traction ropes are respectively fixedly connected to the outsides of the four limiting winding rings.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention can make the fluid more uniform through the inclined balancing hole, reduce the resistance of the impeller, make the impeller run more stably, and ensure the use effect of the cooling system of the new energy vehicle. At the same time, the inclined balancing hole will not change the axial projection area of ​​the impeller, and will not affect the effect of the axial positive thrust of the impeller balance. The second traction rope is used to rotate multiple positioning connecting screws at the same time, which effectively improves the installation efficiency of the impeller pump, saves a lot of time, and reduces the labor burden of the staff. At the same time, the damping elastic member can continuously apply a reverse force to the positioning connecting screw to prevent the positioning connecting screw from loosening, thereby ensuring the installation of the impeller pump. Stability. When leakage occurs at the connection between the impeller pump and the coolant delivery pipe, the sound and light alarm will sound through the deformation of the expansion water stop strip, thereby reminding the staff to promptly inspect and repair the leakage, effectively ensuring the normal use of the cooling system, avoiding the situation where leakage in the cooling system affects the normal operation of new energy vehicles, and improving the safety of new energy vehicles. When the impeller pump is not in use, the sealing baffle can block the coolant outlet and coolant inlet to prevent debris from falling into the impeller pump, effectively avoiding the cleaning of the impeller pump, reducing the labor burden of the staff, and improving the use effect of the impeller pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0016] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0017] In the attached picture:

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the position of the impeller of the present invention.

[0020] Figure 3 It is a structural schematic diagram of the balancing hole of the present invention.

[0021] Figure 4 It is a schematic diagram of the split structure of the buffer pressure plate and the positioning connecting screw rod of the present invention.

[0022] Figure 5 It is a schematic diagram of the positions of the transmission connecting shaft and the blocking baffle of the present invention.

[0023] Figure 6 It is a schematic diagram of the matching relationship between the transmission connecting shaft and the transmission winding shaft of the present invention.

[0024] Figure 7 It is a schematic diagram of the positions of the expansion water stop strip and the sliding warning ring of the present invention.

[0025] Figure 8 It is a schematic diagram of the disassembled structure of the coolant outlet, the expansion water stop strip and the sliding warning ring of the present invention.

[0026] Reference numerals list

[0027] 1. Impeller pump body; 2. Coolant outlet; 201. Expansion water stop strip; 202. Sliding warning ring; 203. Guide limit block; 204. Reset elastic member; 205. Limit squeeze plate; 206. Sound and light alarm; 207. Transmission reel; 208. First bevel gear; 209. Reset volute spring; 210. First traction rope; 3. Coolant inlet; 4. Impeller; 401. Balance hole; 5. Positioning mounting bracket; 6. Transmission connecting shaft; 601. Second bevel gear; 7. Sealing baffle; 8. Buffer pressure plate; 801. Damping elastic member; 802. Positioning connecting screw; 803. Limit reel ring; 804. Second traction rope. DETAILED DESCRIPTION

[0028] Example 1: Please refer to Figures 1 to 4 As shown:

[0029] The present invention provides an impeller pump, comprising an impeller pump body 1, a coolant outlet 2, a coolant inlet 3, an impeller 4, a positioning and mounting bracket 5, a buffer structure and a buffer pressure plate 8; the coolant outlet 2 is fixedly connected to the rear side of the impeller pump body 1; the coolant inlet 3 is fixedly connected to the rear side of the impeller pump body 1; the impeller 4 is arranged on the inner side of the impeller pump body 1; two positioning and mounting brackets 5 are provided, and the two positioning and mounting brackets 5 are respectively fixedly connected to the left and right sides of the impeller pump body 1; two buffer structures are provided, and the two buffer structures are respectively arranged above the two positioning and mounting brackets 5; two buffer pressure plates 8 are provided, and the two buffer pressure plates 8 are respectively located above the two positioning and mounting brackets 5.

[0030] Among them, the buffer structure includes a balancing hole 401 and a damping elastic member 801; a plurality of balancing holes 401 are provided, and a plurality of balancing holes 401 are arranged in a circular array on the inner side of the impeller 4, and the balancing holes 401 are an inclined structure; a plurality of damping elastic members 801 are provided, and the two buffer pressure plates 8 are elastically connected to the two positioning and mounting brackets 5 through a plurality of damping elastic members 801 respectively.

[0031] Among them, the buffer structure also includes a positioning connecting screw 802, a limiting winding ring 803 and a second traction rope 804; there are four positioning connecting screws 802, and the four positioning connecting screws 802 are respectively rotatably connected to the front and rear sides of the two buffer pressure plates 8, and the four positioning connecting screws 802 are respectively threadedly connected to the front and rear sides of the two positioning mounting brackets 5; there are four limiting winding rings 803, and the four limiting winding rings 803 are respectively fixedly connected to the upper parts of the four positioning connecting screws 802; there are two second traction ropes 804, and the front and rear ends of the two second traction ropes 804 are respectively fixedly connected to the outside of the four limiting winding rings 803.

[0032] The specific usage and function of this embodiment are as follows: place the impeller pump body 1 on the installation position, and then rotate one of the positioning and connecting screws 802. At this time, the other positioning and connecting screw 802 on the same side will rotate simultaneously under the traction of the second traction rope 804. The limiting winding ring 803 can limit the second traction rope 804. When the positioning and connecting screw 802 rotates, it will gradually move downward along the positioning and mounting bracket 5, so that the positioning and mounting bracket 5 is connected to the installation position. When the positioning and connecting screw 802 moves downward, it will compress the damping elastic member 801. After the positioning and connecting screw 802 is installed, the damping elastic member 801 will continue to push the buffer pressure plate 8, so that the positioning and connecting screw 802 is subjected to an opposite force. When the impeller pump is running, the impeller 4 will continue to rotate to transport the coolant from the coolant inlet 3 to the coolant outlet 2. The balancing hole 401 can keep the impeller 4 balanced when the impeller 4 rotates at high speed.

[0033] Example 2: Please refer to Figures 5 to 8 As shown:

[0034] On the basis of the first embodiment, it also includes a transmission connecting shaft 6, a shielding structure, a warning structure and a blocking baffle 7; two transmission connecting shafts 6 are provided, and the two transmission connecting shafts 6 are respectively rotatably connected to the outside of the coolant outlet 2 and the outside of the coolant inlet 3; two shielding structures are provided, and the two shielding structures are respectively arranged on the outside of the coolant outlet 2 and the outside of the coolant inlet 3; two warning structures are provided, and the two warning structures are respectively arranged on the outside of the coolant outlet 2 and the outside of the coolant inlet 3; two blocking baffles 7 are provided, and the two blocking baffles 7 are respectively fixedly connected to the outsides of the two transmission connecting shafts 6.

[0035] Among them, the warning structure includes an expansion water stop strip 201 and a sliding warning ring 202; two expansion water stop strips 201 are provided, and the two expansion water stop strips 201 are respectively bonded to the inner side of the coolant outlet 2 and the inner side of the coolant inlet 3; two sliding warning rings 202 are provided, and the two sliding warning rings 202 are respectively slidably connected to the inner side of the coolant outlet 2 and the inner side of the coolant inlet 3.

[0036] Among them, the warning structure also includes a guide limit block 203 and a reset elastic member 204; a plurality of guide limit blocks 203 are provided, and the plurality of guide limit blocks 203 are evenly distributed and fixedly connected to the outer sides of the two sliding warning rings 202, and the plurality of guide limit blocks 203 are respectively slidably connected to the coolant outlet 2 or the coolant inlet 3; a plurality of reset elastic members 204 are provided, and the plurality of guide limit blocks 203 are elastically connected to the coolant outlet 2 or the coolant inlet 3 through the plurality of reset elastic members 204.

[0037] Among them, the warning structure also includes a limit squeeze plate 205 and an audible and visual alarm 206; two limit squeeze plates 205 are provided, and the two limit squeeze plates 205 are respectively fixedly connected to the outer sides of the two sliding warning rings 202; two audible and visual alarms 206 are provided, and the two audible and visual alarms 206 are respectively bolted to the upper part of the coolant outlet 2 and the upper part of the coolant inlet 3; start buttons are provided on the upper part of the coolant outlet 2 and the upper part of the coolant inlet 3.

[0038] Among them, the shielding structure includes a transmission winding shaft 207 and a first traction rope 210; two transmission winding shafts 207 are provided, and the two transmission winding shafts 207 are rotatably connected to the front side of the coolant outlet 2 and the front side of the coolant inlet 3 respectively; the first traction rope 210 is fixedly connected to the upper end surface of the right buffer pressure plate 8, and the first traction rope 210 is wound around the outer side of the transmission winding shaft 207 on the front side of the coolant outlet 2 and then fixedly connected to the transmission winding shaft 207 on the front side of the coolant inlet 3.

[0039] Among them, the shielding structure also includes a first bevel gear 208, a reset spiral spring 209 and a second bevel gear 601; two first bevel gears 208 are provided, and the two first bevel gears 208 are respectively fixedly connected to the rear sides of the two transmission winding shafts 207; two reset spiral springs 209 are provided, and the two transmission winding shafts 207 are respectively elastically connected to the coolant outlet 2 or the coolant inlet 3 through the two reset spiral springs 209; two second bevel gears 601 are provided, and the two second bevel gears 601 are respectively fixedly connected to the inner sides of the two transmission connecting shafts 6, and the two second bevel gears 601 are respectively meshed with the two first bevel gears 208.

[0040] The specific usage and function of this embodiment: when installing the impeller pump, the buffer pressure plate 8 will move downward with the positioning connection screw 802. When the buffer pressure plate 8 moves, it will pull the first traction rope 210, so that the first traction rope 210 drives the transmission winding shaft 207 to rotate. When the transmission winding shaft 207 rotates, it will drive the first bevel gear 208 to rotate, so that the first bevel gear 208 drives the second bevel gear 601 to rotate. When the second bevel gear 601 rotates, it will drive the transmission connection shaft 6 and the blocking baffle 7 to rotate, so that the coolant outlet 2 and the coolant inlet 3 are opened. At this time, the coolant delivery pipe can be installed on the coolant outlet 2 and the coolant inlet 3. If there is leakage at the connection after installation, the expansion water stop strip 201 will absorb the coolant and expand. After the expansion water stop strip 201 expands, it will push the sliding warning ring 202 to slide outward. When the sliding warning ring 202 slides, it will drive the limit squeezing plate 205 to move and squeeze the start button of the sound and light alarm 206. At this time, the sound and light alarm 206 will sound an alarm to remind the staff. The sliding warning ring 202 can help the staff determine the leakage location. The guide limit block 203 can guide the movement of the sliding warning ring 202. After replacing the new expansion water stop strip 201, the reset elastic member 204 will push the sliding warning ring 202 to reset. After the impeller pump is removed, the reset volute spring 209 will drive the transmission winding shaft 207 to reverse, so that the blocking baffle 7 is reset.

Claims

1. An impeller pump, comprising: An impeller pump body (1), a coolant outlet (2), a coolant inlet (3), an impeller (4), a positioning and mounting bracket (5), a buffer structure, a transmission connecting shaft (6), a shielding structure, a warning structure, a blocking baffle (7) and a buffer pressure plate (8); the coolant outlet (2) is fixedly connected to the rear side of the impeller pump body (1); the coolant inlet (3) is fixedly connected to the rear side of the impeller pump body (1); two positioning and mounting brackets (5) are provided, and the two positioning and mounting brackets (5) are respectively fixedly connected to the left and right sides of the impeller pump body (1); it is characterized in that the impeller (4) is arranged on the inner side of the impeller pump body (1); two buffer structures are provided, and the two buffer structures are respectively arranged above the two positioning and mounting brackets (5); There are two buffer pressure plates (8), and the two buffer pressure plates (8) are respectively located above the two positioning and mounting brackets (5); there are two transmission connecting shafts (6), and the two transmission connecting shafts (6) are respectively rotatably connected to the outside of the coolant outlet (2) and the outside of the coolant inlet (3); there are two shielding structures, and the two shielding structures are respectively arranged on the outside of the coolant outlet (2) and the outside of the coolant inlet (3); there are two warning structures, and the two warning structures are respectively arranged on the outside of the coolant outlet (2) and the outside of the coolant inlet (3); there are two blocking baffles (7), and the two blocking baffles (7) are respectively fixedly connected to the outside of the two transmission connecting shafts (6).

2. An impeller pump as claimed in claim 1, characterized in that: The buffer structure comprises a balancing hole (401) and a damping elastic member (801); a plurality of the balancing holes (401) are provided, and a plurality of the balancing holes (401) are arranged in a circular array on the inner side of the impeller (4), and the balancing holes (401) are an inclined structure; a plurality of the damping elastic members (801) are provided, and the two buffer pressure plates (8) are elastically connected to the two positioning mounting brackets (5) respectively through the plurality of the damping elastic members (801).

3. An impeller pump as claimed in claim 2, characterized in that: The buffer structure also includes a positioning connecting screw (802), a limiting winding ring (803) and a second traction rope (804); four positioning connecting screws (802) are provided, and the four positioning connecting screws (802) are respectively rotatably connected to the front and rear sides of the two buffer pressure plates (8), and the four positioning connecting screws (802) are respectively threadedly connected to the front and rear sides of the two positioning mounting brackets (5); four limiting winding rings (803) are provided, and the four limiting winding rings (803) are respectively fixedly connected to the upper parts of the four positioning connecting screws (802); two second traction ropes (804) are provided, and the front and rear ends of the two second traction ropes (804) are respectively fixedly connected to the outer sides of the four limiting winding rings (803).

4. An impeller pump as claimed in claim 1, characterized in that: The warning structure comprises an expansion water stop strip (201) and a sliding warning ring (202); two expansion water stop strips (201) are provided, and the two expansion water stop strips (201) are respectively bonded to the inner side of the coolant outlet (2) and the inner side of the coolant inlet (3); two sliding warning rings (202) are provided, and the two sliding warning rings (202) are respectively slidably connected to the inner side of the coolant outlet (2) and the inner side of the coolant inlet (3).

5. An impeller pump as claimed in claim 4, characterized in that: The warning structure further comprises a guide limit block (203) and a reset elastic member (204); a plurality of the guide limit blocks (203) are provided, and the plurality of the guide limit blocks (203) are evenly distributed and fixedly connected to the outer sides of the two sliding warning rings (202); the plurality of the guide limit blocks (203) are respectively slidably connected to the coolant outlet (2) or the coolant inlet (3); a plurality of the reset elastic members (204) are provided, and the plurality of the guide limit blocks (203) are elastically connected to the coolant outlet (2) or the coolant inlet (3) via the plurality of the reset elastic members (204).

6. An impeller pump as claimed in claim 5, characterized in that: The warning structure further comprises a limit squeeze plate (205) and an audible and visual alarm (206); two limit squeeze plates (205) are provided, and the two limit squeeze plates (205) are respectively fixedly connected to the outer sides of the two sliding warning rings (202); two audible and visual alarms (206) are provided, and the two audible and visual alarms (206) are respectively bolted to the upper part of the coolant outlet (2) and the upper part of the coolant inlet (3); the upper part of the coolant outlet (2) and the upper part of the coolant inlet (3) are both provided with a start button.

7. An impeller pump as claimed in claim 1, characterized in that: The shielding structure includes a transmission reel (207) and a first traction rope (210); two transmission reel shafts (207) are provided, and the two transmission reel shafts (207) are rotatably connected to the front side of the coolant outlet (2) and the front side of the coolant inlet (3) respectively; the first traction rope (210) is fixedly connected to the upper end surface of the buffer pressure plate (8) on the right, and the first traction rope (210) is wound around the outer side of the transmission reel shaft (207) on the front side of the coolant outlet (2) and then fixedly connected to the transmission reel shaft (207) on the front side of the coolant inlet (3).

8. An impeller pump as claimed in claim 7, characterized in that: The shielding structure also includes a first bevel gear (208), a reset spiral spring (209) and a second bevel gear (601); two first bevel gears (208) are provided, and the two first bevel gears (208) are respectively fixedly connected to the rear sides of the two transmission winding shafts (207); two reset spiral springs (209) are provided, and the two transmission winding shafts (207) are respectively elastically connected to the coolant outlet (2) or the coolant inlet (3) through the two reset spiral springs (209); two second bevel gears (601) are provided, and the two second bevel gears (601) are respectively fixedly connected to the inner sides of the two transmission connecting shafts (6), and the two second bevel gears (601) are respectively meshed with the two first bevel gears (208).