Compact high-reliability automobile water pump

Abstract

The utility model relates to the technical field of water pumps, and discloses a compact high-reliability automobile water pump which comprises a pump body, a bearing is rotationally arranged in the pump body, one end of the bearing is connected with a belt pulley, the other end of the bearing is connected with an impeller, and a water seal is arranged at the position, close to the impeller, of the bearing and the pump body. Evaporation holes are formed in the side, close to the belt wheel, of the pump body, the evaporation holes are formed in the pump body around the circumference of the bearing, and enclosing walls used for preventing external foreign matter from entering the water pump are arranged on the outer side faces of the evaporation holes. The protruding coaming type turbulent flow rib flow channel is adopted at the water seal part of the pump body, the flow guide pipe is additionally arranged at the special turbulent flow rib part and used in cooperation with the turbulent flow rib, liquid exists around the water seal while the turbulent flow rib guides flow, effective lubrication and cooling are achieved, ablation caused by dry friction is avoided, long-time fault-free operation can be achieved, and the service life of the pump body is prolonged. And the water pump can work safely and reliably for a long time.

Description

Technical Field

[0001] The present application relates to the technical field of water pumps, and in particular to a compact and highly reliable automobile water pump. Background Art

[0002] Generally, most engines use conventional mechanical water pumps, that is, the water pump impeller rotates under the drive of the water pump pulley to realize the water pumping function. The speed of this mechanical water pump will increase with the increase of engine speed, so the coolant supply will also increase with the increase of engine speed.

[0003] The water pressure before and after the impeller is lower than the water pressure in the water outlet channel, which results in lower water pressure behind the impeller, that is, lower water pressure at the water seal. This will cause poor water film formed between the rotating shaft and the water seal. In severe cases, it will cause dry grinding of the rotating shaft and the water seal, causing the water seal to fail, limiting the service life of the water seal and the overall stability of the water pump during long-term operation.

[0004] Therefore, the above problems are solved by a compact and highly reliable automotive water pump. Summary of the invention

[0005] The purpose of the present application is to provide a compact and highly reliable automobile water pump to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: comprising a pump body, wherein a bearing is rotatably arranged inside the pump body, one end of the bearing is connected to a pulley, the other end of the bearing is connected to an impeller, and a water seal is arranged at the connection between the bearing and the pump body near the impeller.

[0007] Preferably, an evaporation hole is provided on a side of the pump body close to the pulley, and the evaporation hole is provided on the pump body around the circumference of the bearing. A wall is provided on the outer side of the evaporation hole for preventing external foreign matter from entering the pump body.

[0008] Preferably, a liquid storage tank is provided on one side of the pump body close to the pulley, and the liquid storage tank is arranged on the pump body around the circumference of the bearing. A through hole is opened on the side wall of the liquid storage tank, and the through hole extends to the interior of the pump body.

[0009] Preferably, the liquid storage tank and the evaporation hole are asymmetrically arranged on the pump body.

[0010] Preferably, a plugging cover is provided at the opening of the liquid storage tank, and a sealing gasket is provided on a side of the plugging cover close to the liquid storage tank, and the shape of the sealing gasket is the same as that of the plugging cover and the liquid storage tank.

[0011] Preferably, the impeller adopts a closed structure made of plastic material, and the pulley adopts an integrated spinning and lightening structure.

[0012] Preferably, a shroud is provided on one side of the pump body close to the impeller, and symmetrical spoiler ribs are provided inside the shroud, one of the spoiler ribs is provided with a flow guide pipe, and the flow guide pipe is provided on the end face of the spoiler rib.

[0013] Preferably, one end of the spoiler rib away from the pump body is provided with a chamfer.

[0014] Preferably, a chamfer is provided at the connection between the pump body and the water seal.

[0015] Preferably, the other end of the water seal has a protrusion, and the protrusion of the water seal is arranged inside the enclosure.

[0016] Preferably, the water outlet hole of the guide pipe is level with the protruding portion of the water seal.

[0017] Preferably, the plugging cover and the sealing gasket are connected via rivet points.

[0018] Technical effects and advantages of this application:

[0019] 1. The present application adopts a raised enclosure type spoiler rib flow channel at the water seal part of the pump body and adds a guide pipe at a special spoiler rib part, which is used in conjunction with the spoiler rib. While the spoiler rib guides the flow, it ensures that there is liquid around the water seal to obtain effective lubrication and cooling, avoids ablation caused by dry friction, can operate without trouble for a long time, and ensures that the water pump works safely and reliably for a long time.

[0020] 2. The water pump of the above structure adopted in this application has compact structure and good reliability. After installation and reliability verification, it can fully meet customer needs and has been used in batches on a certain type of engine of the customer.

[0021] 3. The product of this application has a high starting point for design, compact structure, light weight, excellent product performance, good reliability, has been recognized by the market, has been put into operation in batches, and has created certain social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of this application.

[0023] Figure 2 This is a schematic diagram of the disassembled structure of the water pump for this application.

[0024] Figure 3 This is a schematic diagram of the right side structure of the water pump disassembled for this application.

[0025] Figure 4 This is a schematic diagram of the rear end structure of the pump body of this application.

[0026] Figure 5 This is a schematic diagram of the pump advance end structure for this application.

[0027] Figure 6This is a schematic diagram of the liquid storage tank and plugging cover structure of the pump body of this application.

[0028] In the figure: 1. pulley; 2. bearing; 3. pump body; 301. enclosure; 302. spoiler rib; 303. guide tube; 304. evaporation hole; 305. liquid storage tank; 306. plugging cover; 307. through hole; 4. water seal; 5. impeller. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0030] Generally, most engines use conventional mechanical water pumps, that is, the water pump impeller rotates under the drive of the water pump pulley to realize the water pumping function. The speed of this mechanical water pump will increase with the increase of engine speed, so the coolant supply will also increase with the increase of engine speed.

[0031] The water pressure before and after the impeller is lower than the water pressure in the water outlet channel, which results in lower water pressure behind the impeller, that is, lower water pressure at the water seal. This will cause poor water film formed between the rotating shaft and the water seal. In severe cases, it will cause dry grinding of the rotating shaft and the water seal, causing the water seal to fail, limiting the service life of the water seal and the overall stability of the water pump during long-term operation.

[0032] This application provides Figures 1 to 6 A compact and highly reliable automobile water pump is shown, comprising a pump body 3, wherein a bearing 2 is rotatably arranged inside the pump body 3, a pulley 1 is connected to one end of the bearing 2, an impeller 5 is connected to the other end of the bearing 2, and a water seal 4 is arranged at the connection between the bearing 2 and the pump body 3 near the impeller 5;

[0033] When in use, the pulley 1 drives the bearing 2 to rotate inside the pump body 3. The pump body 3 is made of aluminum alloy. The bearing 2 drives the impeller 5 to rotate. The rotation of the impeller 5 drives the liquid to flow, ensuring that there is liquid around the water seal 4 to obtain effective lubrication and cooling, avoiding ablation caused by dry friction, and being able to run without trouble for a long time, ensuring that the water pump works safely and reliably for a long time.

[0034] The pump body 3 is provided with an evaporation hole 304 on one side close to the pulley 1 . The evaporation hole 304 is provided on the pump body 3 around the circumference of the bearing 2 . The outer side of the evaporation hole 304 is provided with a wall for preventing external foreign matter from entering the pump body 3 .

[0035] When in use, the evaporation hole 304 is used for the water seal 4. During operation, the friction pair will generate heat due to the high-speed rotation, which will vaporize the cooling medium between the stationary ring and the rotating ring. The generated steam is discharged from the evaporation hole to prevent the steam from existing in the cavity between the bearing and the water seal and corroding the bearing, thereby effectively reducing the attenuation of the bearing life. The wall of the evaporation hole 304 is used to prevent foreign matter such as dust in the external environment from invading the pump body 3, thereby preventing foreign matter from damaging the pump body 3.

[0036] The pump body 3 is provided with a liquid storage tank 305 on one side close to the pulley 1 . The liquid storage tank 305 is arranged on the pump body 3 around the circumference of the bearing 2 . A through hole 307 is opened on the side wall of the liquid storage tank 305 . The through hole 307 extends to the interior of the pump body 3 .

[0037] When in use, a liquid storage tank 305 is set at the lowest possible position on the circumferential side surface of the pump body 3 where the bearing 2 is installed. Liquid that normally leaks during the operation of the water pump flows into the liquid storage tank 305 through the through hole 307 and is stored in the liquid storage tank 305. At the same time, it also has the function of determining whether the water pump is damaged or leaking and whether it can work normally, thereby improving the quality of product after-sales service management.

[0038] The liquid storage tank 305 and the evaporation hole 304 are asymmetrically arranged on the pump body 3 .

[0039] When in use, the evaporation hole 304 and the liquid storage tank 305 are both arranged on the circumferential side surface of the bearing 2, and the two are arranged asymmetrically.

[0040] The function of the liquid storage tank 305 is to collect liquid from instantaneous tiny leakage of the mechanical seal and liquid from steam cooling. As long as the liquid does not submerge the drain position at the top of the plugging cover, the liquid will remain for a period of time and slowly evaporate at high temperature, so that tiny leakage will not produce leakage marks on the pump surface, which can effectively prevent after-sales misjudgment.

[0041] A plugging cover 306 is disposed at the opening of the liquid storage tank 305 . A sealing gasket is disposed on one side of the plugging cover 306 close to the liquid storage tank 305 . The shape of the sealing gasket is the same as that of the plugging cover 306 and the liquid storage tank 305 .

[0042] The plugging cover 306 is connected to the sealing gasket through riveting points.

[0043] When in use, the plugging cover 306 of the liquid reservoir 305 adopts a special-shaped sheet structure and has its own sealing gasket. After assembly, it is tightened and prevented from falling off by riveting points. The plugging cover 306 is set according to the shape of the liquid reservoir 305. The shape of the liquid reservoir 305 includes a circumferential surface around the bearing 2, but is not limited to this. However, the size of the liquid reservoir 305 is set not to exceed the diameter of the pulley 1. The pulley 1 is buckled at one end of the pump body 3, and the liquid reservoir 305 is between the pulley 1 and the pump body 3.

[0044] The impeller 5 adopts a closed structure made of plastic material, and the pulley 1 adopts an integrated spinning and lightening structure.

[0045] When in use, the impeller 5 adopts a closed structure made of plastic material, which is light in weight. The pulley 1 adopts an integrated spinning light-removing structure, which is easy to install and light in weight. The liquid storage tank 305 and the plug cover 306 adopt self-contained sealing gaskets and special-shaped sheet structures. At the same time, the water inlet and outlet parts, the flow channel part and the end face sealing part of the water pump are all integrated on the engine. The pump body 3 is connected to the engine with disassembly bolts, which makes the replacement and maintenance of the pump body 3 more convenient, effectively reducing the management and maintenance costs of the engine.

[0046] A shroud 301 is provided on one side of the pump body 3 close to the impeller 5 , and symmetrical spoiler ribs 302 are provided inside the shroud 301 , one of the spoiler ribs 302 is provided with a guide tube 303 , and the guide tube 303 is provided on the end surface of the spoiler rib 302 .

[0047] When in use, a raised enclosure 301 type spoiler rib 302 flow channel is adopted at the pump body 3 and the water seal 4, and a guide pipe 303 is additionally provided at a special spoiler rib 302 position, which is used in conjunction with the spoiler rib 302. While the spoiler rib 302 guides the flow, it is ensured that there is liquid around the water seal 4, so that effective lubrication and cooling are obtained, ablation caused by dry friction is avoided, and it can run without trouble for a long time, ensuring that the pump body 3 works safely and reliably for a long time.

[0048] When the cross section of the spoiler rib 302 is parallel to the end face of the enclosure 301, the cross section of the spoiler rib 302 is in an arc shape. The arc formed by the cross section of the spoiler rib 302, the spoiler rib 302 and the enclosure 301 constitute a water storage portion. After the high-pressure water flow formed by entering the water seal 4 from the inside of the enclosure 301 contacts the spoiler rib 302, it can quickly pass through the water seal 4 with less loss to the connection between the pump body 3 and the bearing 2. In addition, the high-pressure water flow formed by entering the water seal 4 from the inside of the enclosure 301 can store part of the high-pressure water flow to maintain the water pressure at the water seal, thereby reducing the probability of dry grinding of the water seal when the water pump is running, and improving the service life of the water seal and the overall stability of the water pump during long-term operation.

[0049] The end of the spoiler rib 302 away from the pump body 3 is provided with a chamfer.

[0050] When in use, the resistance of the spoiler ribs 302 to the high-pressure water flow formed between the enclosure 301 and the bottom end of the impeller 5 is reduced, so that a space is formed between the enclosure 301 and the bottom end of the impeller 5. The high-pressure water flow can quickly leave the boost chamber 20 carrying the heat generated by the water seal 4 during operation, so that the water seal 4 can operate at an allowable operating temperature during operation.

[0051] The connection between the pump body 3 and the water seal 4 is provided with a chamfer.

[0052] The other end of the water seal 4 has a protruding portion, and the protruding portion of the water seal 4 is arranged inside the enclosure 301 .

[0053] When in use, the resistance of the water seal 4 to the water flow is increased by setting the chamfer, and a stable water flow is formed inside the space formed by the enclosure 301 and the bottom end of the impeller 5 to take away the heat at the water seal 4.

[0054] The water outlet of the flow guide pipe 303 is level with the protruding portion of the water seal 4 .

[0055] When in use, most of the water flow will be blocked by the spoiler ribs 302 and directed to the connection of the water seal 4 inside the enclosure 301 to increase the working water pressure at the water seal 4 and avoid dry grinding of the water seal 4.

[0056] How it works

[0057] The water pump product consists of a pump body 3, a bearing 2, a water seal 4, an impeller 5, a spun pulley 1, and a plug cover 306. The pump body 3 is made of aluminum alloy, the impeller 5 is a plastic closed structure with reduced weight, the bearing 2 and the water seal 4 are both standardized series components of the company, the pulley 1 adopts an integrated spun light structure, which is easy to install and light in weight, the liquid storage tank 305 and the plug cover 306 adopt self-contained sealing gaskets and special-shaped sheet structures, and the water inlet and outlet parts, the flow channel part and the end face sealing part of the water pump are all integrated on the engine, and the connection between the water pump and the engine adopts disassembly bolts, which makes the replacement and maintenance of the water pump more convenient, and effectively reduces the management and maintenance costs of the engine.

[0058] In order to ensure that the water pump meets the performance requirements of the customer, the water pump is first arranged in the spatial position provided by the customer, and the hydraulic efficiency is calculated to obtain the best matching space between the water pump impeller 5 and the flow channel. Then the other parts of the water pump are further refined and optimally arranged. A raised enclosure 301-type spoiler rib 302 flow channel is used at the water seal 4 of the pump body 3, and a guide pipe 303 is added at a special spoiler rib 302 position. When used in conjunction with the spoiler rib 302, while the spoiler rib 302 guides the flow, it is ensured that there is liquid around the water seal 4 to obtain effective lubrication and cooling, avoid ablation caused by dry friction, and be able to operate without trouble for a long time, ensuring that the water pump can work safely and reliably for a long time.

[0059] In order to ensure and increase the safer, more reliable and long-term operation of the water pump and improve the after-sales service quality of the water pump, according to the layout space of the water pump, the middle part of the bearing 2 and the water seal 4 is installed above the water pump body 3, and a wall-type evaporation hole 304 is set as high as the space position allows to prevent the invasion of foreign matter such as dust in the external environment into the water pump. The middle part of the bearing 2 and the water seal 4 is installed below the pump body 3, and a liquid storage tank 305 is set at the lowest possible position. The liquid storage tank 305 and the evaporation hole 304 are located in the same plane. The liquid storage tank 305 and the plug cover 306 adopt a special-shaped sheet structure and have their own sealing gaskets. After assembly, rivet points are used to tighten and prevent falling off. The liquid storage tank 305 stores the liquid that normally leaks during the operation of the water pump, and also has the function of determining whether the water pump is damaged or leaking and whether it can work normally, thereby improving the quality of product after-sales service management.

[0060] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A compact and highly reliable automobile water pump, characterized in that: The pump body (3) comprises a bearing (2) rotatably arranged inside the pump body (3), one end of the bearing (2) is connected to a pulley (1), the other end of the bearing (2) is connected to an impeller (5), and a water seal (4) is arranged at the connection between the bearing (2) and the pump body (3) near the impeller (5); An evaporation hole (304) is provided on a side of the pump body (3) close to the pulley (1); the evaporation hole (304) is provided on the pump body (3) around the circumference of the bearing (2); and a wall is provided on the outer side of the evaporation hole (304) for preventing external foreign matter from entering the interior of the pump body (3); A liquid storage tank (305) is arranged on one side of the pump body (3) close to the pulley (1); the liquid storage tank (305) is arranged on the pump body (3) around the circumference of the bearing (2); a through hole (307) is opened on the side wall of the liquid storage tank (305); and the through hole (307) extends to the interior of the pump body (3).

2. A compact and highly reliable automobile water pump according to claim 1, characterized in that: The liquid storage tank (305) and the evaporation hole (304) are asymmetrically arranged on the pump body (3).

3. A compact and highly reliable automobile water pump according to claim 1, characterized in that: A blocking cover (306) is provided at the opening of the liquid storage tank (305), and a sealing gasket is provided on a side of the blocking cover (306) close to the liquid storage tank (305), and the shape of the sealing gasket is the same as that of the blocking cover (306) and the liquid storage tank (305).

4. A compact and highly reliable automobile water pump according to claim 1, characterized in that: The impeller (5) adopts a closed structure made of plastic material, and the pulley (1) adopts an integrated spinning and lightening structure.

5. A compact and highly reliable automobile water pump according to claim 1, characterized in that: A shroud (301) is provided on one side of the pump body (3) close to the impeller (5), and the shroud (301) has symmetrical spoiler ribs (302) inside, one of the spoiler ribs (302) being provided with a flow guide tube (303), and the flow guide tube (303) being provided on the end surface of the spoiler rib (302).

6. A compact and highly reliable automobile water pump according to claim 5, characterized in that: The end of the spoiler rib (302) away from the pump body (3) is provided with a chamfer.

7. A compact and highly reliable automobile water pump according to claim 5, characterized in that: The connection between the pump body (3) and the water seal (4) is provided with a chamfer.

8. A compact and highly reliable automobile water pump according to claim 7, characterized in that: The other end of the water seal (4) is a protruding portion, and the protruding portion of the water seal (4) is arranged inside the enclosure (301).

9. A compact and highly reliable automobile water pump according to claim 8, characterized in that: The water outlet hole of the flow guide pipe (303) is level with the protruding portion of the water seal (4).

10. A compact and highly reliable automobile water pump according to claim 3, characterized in that: The plugging cover (306) is connected to the sealing gasket via riveting points.

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