A water pump shaft bearing

Abstract

The utility model discloses a water pump shaft connecting bearing that can wade, including core shaft and outer ring, the concentric sleeve of outer ring is located the outer periphery of core shaft, be equipped with the roller subassembly between core shaft and outer ring, the both ends of outer ring and core shaft are equipped with sealing element respectively, the core shaft still concentricly fixed installation has two fan -blade formula water -throwing ring, two fan -blade formula water -throwing ring are located the outside of corresponding sealing element respectively, and rotate synchronously with core shaft. The utility model discloses through the high -speed rotation of core shaft, produces the wind power and the moisture stirring centrifugal force, prevents the vehicle when wading, and moisture invades to the bearing inside influence bearing life, the wind power that generates simultaneously can blow away the dust of outside from the bearing sealing surface, prevents dust and invades the bearing, also can reach the cooling effect.

Description

Technical Field

[0001] This utility model relates to the field of water pump coupling technology, and more specifically, to a water pump shaft coupling bearing that can be used in water. Background Technology

[0002] Against the backdrop of rapid development in the automotive industry, the increasing prevalence of vehicles and the frequent occurrence of extreme weather have placed higher demands on the waterproof performance of vehicles. As a core component of the cooling system, the water pump bearing not only needs to withstand traditional mechanical stress, but also must cope with the waterproof challenges of driving in wading scenarios.

[0003] However, when the drain hole is blocked by external dust, antifreeze crystallization, or significant leakage causing poor drainage, water cannot be discharged in time, resulting in immersion of the bearing seal. In this case, the water-throwing function is lost. When external dust enters the water pump housing's leakage hole, the traditional water-throwing ring structure rotates within the housing cavity without generating an air pressure difference, preventing the dust from being blown out. This leads to accumulation, affecting the water pump's water seal and causing minor leaks, ultimately resulting in pump failure. Facing the automotive industry's increasing demands for vehicle wading capabilities, existing water pump shaft bearings cannot meet immersion requirements.

[0004] Therefore, it is necessary to provide a water pump shaft bearing that can be used in water to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a water pump shaft connecting bearing that can be used in water, overcoming the above-mentioned defects in the prior art.

[0006] The technical solution to achieve the purpose of this utility model is: a water pump shaft connecting bearing that can be used in water, including a spindle and an outer ring, the outer ring being concentrically sleeved on the outer circumference of the spindle, a roller assembly being provided between the spindle and the outer ring, and a seal being provided at both ends of the outer ring and between the spindle; two water-throwing devices are also fixedly installed on the spindle, the two water-throwing devices being located on the outside of the two seals respectively, and rotating synchronously with the spindle.

[0007] Furthermore, the sealing element is a skeleton rubber sealing ring, and the rubber sealing body is provided with two radial sealing lips and one axial sealing lip; the two radial sealing lips respectively form an interference contact with the outer circular surface of the mandrel to achieve radial dynamic sealing; the axial sealing lip faces the outside of the bearing and forms an axial interference fit with the back of the corresponding water-throwing device, and is tightly attached to the back of the corresponding water-throwing device.

[0008] Furthermore, the axial sealing lip is inclined outward, and the angle between its lip centerline and the mandrel axis is greater than or equal to 10° and less than 90°.

[0009] Furthermore, the mandrel has an annular flange in the middle, and multiple channels are provided on the annular flange. Multiple channels are also provided on the outer ring, which cooperate with the channels on the annular flange to achieve the fixed installation of the roller assembly and the seal.

[0010] Furthermore, the roller assembly includes:

[0011] A first retainer is fixedly installed between the spindle groove and the outer ring groove, and a plurality of steel balls are distributed within the first retainer;

[0012] The second cage is fixedly installed between the spindle groove and the outer ring groove, and a plurality of cylindrical rollers are distributed within the second cage.

[0013] Furthermore, the water-spinning device includes:

[0014] The collar portion is assembled in the circumferential direction of the mandrel;

[0015] Multiple connecting parts are evenly distributed on the collar part and located on the plane of a certain cross-section of the mandrel;

[0016] Multiple fan blades are vertically arranged on the side of the connecting part and correspond one-to-one with the connecting part, so that the fan blades are arranged around the outer surface of the collar part.

[0017] Furthermore, the fan blade portion has an arc-shaped structure.

[0018] Furthermore, the fan blade portion is recessed in the opposite direction of the rotation of the spindle to form an arc-shaped structure.

[0019] Furthermore, the fan blades are inclined in the opposite direction to the rotation of the spindle.

[0020] Furthermore, the number of fan blades is 3 to 12.

[0021] By adopting the above technical solution, this utility model has the following beneficial effects:

[0022] (1) This utility model uses a spindle to drive high-speed rotation. The outer water-throwing device generates wind force and centrifugal force to stir water, preventing water from entering the bearing and affecting its life when the vehicle is wading through water. At the same time, the generated wind force can blow external dust away from the bearing sealing surface, preventing dust from entering the bearing and also achieving a cooling effect. When the water pump leak hole is blocked, the inner water-throwing device throws water onto the water pump housing hole wall through centrifugal force, impacting the leak hole and clearing the blockage, and then flows out through the leak hole. When there is dust attached to the water pump leak hole and exhaust hole, the water-throwing device generates wind force by rotation to blow the dust away.

[0023] (2) The sealing ring of this utility model adopts a skeleton-type three-lip structure. The two radial lips effectively prevent grease leakage and block contaminants from entering radially. The axial lip is specifically designed to achieve dynamic end face sealing on the back of the water-slinging ring. The three work together to significantly outperform the performance of traditional single-lip or double-lip oil seals in the water pump environment, effectively avoiding bearing corrosion, lubrication failure and premature wear caused by water ingress.

[0024] (3) The axial lip of the sealing ring of this utility model adopts an outward inclination design. Under the action of external water pressure, the lip will not be blown open, but will instead fit more tightly against the back of the water-slinging ring due to the pressure, forming a self-reinforcing effect of "the higher the water pressure, the tighter the seal", which greatly improves the water-sealing performance.

[0025] (4) The mandrel of this utility model has an annular flange with a groove in the middle, which cooperates with the outer ring groove. This not only provides precise positioning for the roller assembly, but also provides a stable installation reference for the seal, ensuring the coaxiality and structural rigidity of the entire bearing assembly, and improving assembly accuracy and running stability.

[0026] (5) The water-throwing device of this utility model adopts an arc-shaped, reverse-concave, and inclined fan blade structure, preferably 3 to 12 in number. This not only optimizes the fluid dynamics performance and enhances the water-throwing efficiency, but also forms a directional flow during rotation, further preventing the water medium from flowing back into the sealed area. The arc-shaped and reverse-inclined design takes into account both structural strength and drainage efficiency, while reducing wind resistance and noise. Attached Figure Description

[0027] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0028] Figure 1 This is the front view of the present invention.

[0029] Figure 2 This is an internal view of the outer ring of this utility model.

[0030] Figure 3 This is a three-dimensional view of the seal.

[0031] Figure 4 This is a three-dimensional view of the water-throwing device.

[0032] 1. Mandrel; 1-1. Annular flange; 2. Outer ring; 3. Roller assembly; 3-1. First cage; 3-2. Steel ball; 3-3. Second cage; 3-4. Cylindrical roller; 4. Seal; 5. Water-spraying device; 5-1. Ring; 5-2. Connecting part; 5-3. Fan blade. Detailed Implementation

[0033] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0034] (Example 1)

[0035] A water-resistant pump shaft bearing, see Figure 1 and Figure 2 It includes a mandrel 1, an outer ring 2, a roller assembly 3, a seal 4, and a water-spinning device 5;

[0036] The outer ring 2 is concentrically fitted around the outer circumference of the spindle 1. A roller assembly 3 is provided between the spindle 1 and the outer ring 2. Seals 4 are provided at both ends of the outer ring 2 and between the spindle 1. The spindle 1 is also concentrically fixed with two water-throwing devices 5. The two water-throwing devices 5 are located on the outside of the corresponding seals 4 and rotate synchronously with the spindle 1.

[0037] Specifically, the mandrel 1 has an annular flange 1-1 in the middle, and multiple channels are provided on the annular flange 1-1. Multiple channels are also provided on the outer ring 2. The channels on the annular flange 1-1 cooperate with each other to fix and install the roller assembly 3 and the seal 4.

[0038] Specifically, the roller assembly 3 includes: a first cage 3-1, which is fixedly installed between the groove of the spindle 1 and the groove of the outer ring 2; and a plurality of steel balls 3-2 are distributed in the first cage 3-1; a second cage 3-3, which is fixedly installed between the groove of the spindle 1 and the groove of the outer ring 2; and a plurality of cylindrical rollers 3-4 are distributed in the second cage 3-3.

[0039] Specifically, see Figure 3 The sealing element 4 is a skeleton-type rubber sealing ring. The rubber sealing body has two radial sealing lips and one axial sealing lip. The two radial sealing lips form an interference fit with the outer circular surface of the spindle 1 to achieve radial dynamic sealing. The axial sealing lip faces the outside of the bearing and forms an axial interference fit with the back of the corresponding water-throwing device 5, tightly adhering to the back of the corresponding water-throwing device 5. The two radial lips effectively prevent grease leakage and block contaminants from entering radially, while the axial lip is specifically designed to achieve dynamic end-face sealing on the back of the water-throwing ring. The synergistic effect of these three elements significantly outperforms traditional single-lip or double-lip oil seals in a water pump environment, effectively preventing bearing corrosion, lubrication failure, and premature wear caused by water ingress.

[0040] The axial sealing lip is inclined outward, and the angle between its center line and the axis of the mandrel 1 is greater than or equal to 10° and less than 90°. Under the action of external water pressure, the lip will not be blown open, but will instead fit more tightly against the back of the water-slinging ring due to the pressure, forming a self-reinforcing effect of "the higher the water pressure, the tighter the seal", which greatly improves the water-sealing performance.

[0041] Specifically, see Figure 4 The water-throwing device 5 includes: a collar portion 5-1, multiple connecting portions 5-2, and multiple fan blade portions 5-3. The collar portion 5-1 is assembled around the spindle 1; the multiple connecting portions 5-2 are evenly distributed on the collar portion 5-1 and located on the plane of a certain cross-section of the spindle 1; the multiple fan blade portions 5-3 are vertically arranged on the side of the connecting portions 5-2 and correspond one-to-one with the connecting portions 5-2, so that the fan blade portions 5-3 are arranged around the outer surface of the collar portion 5-1.

[0042] When the water pump leaks and soaks the bearing, the vane-type water-throwing ring uses centrifugal force to throw the water onto the pump housing bore wall, which then flows out through the leak hole. When the water pump leak hole is blocked, the vane-type water-throwing ring uses centrifugal force to throw the water onto the pump housing bore wall, impacting the leak hole and clearing the blockage, which then flows out through the leak hole. When dust adheres to the water pump leak hole and vent hole, the vane-type water-throwing ring generates airflow through rotation, blowing the dust away. The vane-type water-throwing ring also cools the bearing by generating airflow through rotation.

[0043] When a vehicle drives through water, and water seeps into the water pump pulley side, reaching or submerging the bearing pulley side seal, the water-throwing device quickly ejects the water by agitation, simultaneously reducing water pressure on the pulley side rubber seal, thus lowering the water pressure and protecting the seal. When the vehicle operates in dusty environments such as mines, the bearing pulley side water-throwing device generates airflow through rotation, blowing dust away from the bearing surface, preventing dust from entering the bearing, and also cooling the bearing.

[0044] Specifically, the fan blade portion 5-3 is recessed in the opposite direction of the rotation of the spindle 1, forming an arc-shaped structure. Furthermore, the fan blade portion 5-3 is inclined in the opposite direction of the rotation of the spindle 1. When the fan-type water-throwing device rotates with the spindle 1, it can improve the water collection and drainage capacity of the water-throwing device 5, promptly throwing out water and preventing soaking of the bearing seal. The number of fan blade portions 5-3 is 3 to 12. The number is determined by the diameter of the fan blade relative to the spindle 1; in this embodiment, the number of fan blade portions 5-3 is 10.

[0045] To facilitate understanding of the technical solution for the water pump shaft coupling bearing, its installation process is briefly described as follows: First, measure the dimensions of the mandrel 1 and outer ring 2 raceways to select the appropriate clearance. Second, install the steel balls 3-2 and the first cage 3-1 between the mandrel 1 raceway and the outer ring 2 raceway. Third, install the second cage 3-3 and cylindrical rollers 3-4 between the mandrel 1 raceway and the outer ring 2 raceway. Fourth, inject grease into the bearing. Fifth, assemble the seals 4 on both sides of the bearing. Sixth, assemble the water-throwing devices 5 on both sides of the bearing. This completes the assembly process of the new type of water pump shaft coupling bearing that is automatically dust-removing and can withstand water immersion. Seventh, press-fit the water pump shaft coupling bearing assembly into the water pump housing, positioning the water-throwing devices at the locations of the water leakage holes and vent holes in the water pump housing. This satisfies the requirements of cooling and pressurizing the impeller side of the bearing during operation to prevent water intrusion, and also satisfies the requirement of preventing external pollutants from entering the bearing pulley side seals in water-immersion or dusty environments.

[0046] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water-resistant water pump shaft bearing, characterized in that: It includes a mandrel (1) and an outer ring (2), the outer ring (2) being concentrically fitted around the outer circumference of the mandrel (1), a roller assembly (3) being provided between the mandrel (1) and the outer ring (2), and a seal (4) being provided between both ends of the outer ring (2) and the mandrel (1); two water-spinning devices (5) are also fixedly installed on the mandrel (1), the two water-spinning devices (5) being located outside the two seals (4) respectively, and rotating synchronously with the mandrel (1).

2. The water-resistant pump shaft bearing according to claim 1, characterized in that: The sealing element (4) is a skeleton rubber sealing ring. The rubber sealing body is provided with two radial sealing lips and one axial sealing lip. The two radial sealing lips respectively form an interference contact with the outer circular surface of the mandrel (1) to achieve radial dynamic sealing. The axial sealing lip faces the outside of the bearing and forms an axial interference fit with the back of the corresponding water-throwing device (5), and is tightly attached to the back of the corresponding water-throwing device (5).

3. A water-resistant pump shaft bearing according to claim 2, characterized in that: The axial sealing lip is inclined outward, and the angle between the center line of the lip and the axis of the mandrel (1) is greater than or equal to 10° and less than 90°.

4. The water-resistant water pump shaft bearing according to claim 1, characterized in that: The mandrel (1) has an annular flange (1-1) in the middle, and multiple channels are provided on the annular flange (1-1). Multiple channels are also provided on the outer ring (2). The channels on the annular flange (1-1) cooperate with each other to fix the roller assembly (3) and the seal (4).

5. A water-resistant pump shaft bearing according to claim 4, characterized in that: The roller assembly (3) includes: The first retainer (3-1) is fixedly installed between the groove of the spindle (1) and the groove of the outer ring (2), and a plurality of steel balls (3-2) are distributed in the first retainer (3-1); The second retainer (3-3) is fixedly installed between the groove of the spindle (1) and the groove of the outer ring (2), and a plurality of cylindrical rollers (3-4) are distributed in the second retainer (3-3).

6. A water-resistant pump shaft bearing according to claim 1, characterized in that: The water-throwing device (5) includes: The collar portion (5-1) is assembled in the circumferential direction of the mandrel (1); Multiple connecting parts (5-2) are evenly distributed on the collar part (5-1) and located on the plane of a certain cross section of the mandrel (1); Multiple fan blades (5-3) are vertically arranged on the side of the connecting part (5-2) and correspond one-to-one with the connecting part (5-2), so that the fan blades (5-3) are arranged around the outer surface of the collar part (5-1).

7. A water-resistant pump shaft bearing according to claim 6, characterized in that: The fan blade section (5-3) has an arc-shaped structure.

8. A water-resistant pump shaft bearing according to claim 7, characterized in that: The fan blade portion (5-3) is recessed in the opposite direction of the rotation of the spindle (1) to form an arc-shaped structure.

9. A water-resistant pump shaft bearing according to claim 8, characterized in that: The fan blades (5-3) are inclined in the opposite direction of the rotation of the spindle (1).

10. A water-resistant pump shaft bearing according to claim 6, characterized in that: The number of the fan blades (5-3) is 3 to 12.

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