Control valve suitable for automobile water pump

Abstract

The utility model relates to the technical field of automobile water pumps, in particular to a control valve suitable for an automobile water pump, which comprises a valve body and a valve core movably arranged in the valve body, the upper end of the valve body is provided with a rocker arm which drives the valve element to move in a reciprocating mode in the vertical direction to control opening and closing of the liquid passing channel, and a transmission structure for transmitting torque is arranged between the rocker arm and the valve element.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile water pumps, in particular to a control valve suitable for automobile water pumps. Background Art

[0002] The automobile water pump is an important component for cooling the automobile engine. The utility model patent with patent application number CN202320985535.3 discloses an integrated mechanical water pump, comprising a water pump housing, a valve body housing (2) is arranged on one side of the inner wall of the water pump housing, the valve body housing (2) and the water pump housing (1) are an integrated structure, a rotor (3) is arranged on the top of the water pump housing (1), the rotor (3) is connected to a transmission shaft, one end of the transmission shaft passes through the water pump housing (1) and is connected to an impeller (4), a valve rocker arm (6) is installed on the water pump housing (1), and the valve rocker arm (6) is connected to a valve core (5) through a shaft.

[0003] The integrated mechanical water pump has the following disadvantages in actual production and use: 1. The valve core rotates in the valve body shell to control the inlet and outlet of the coolant. Figure 1 From the perspective of 1. After long-term use, the two sides of the valve core cannot maintain a close fit with the valve body shell, which reduces the sealing of the valve core and causes the mechanical water pump to fail; 2. Since the valve rocker arm is connected to the valve core through the shaft body, during actual assembly, a tool is required to press the valve rocker arm into the shaft body to form an interference fit between the two. If the press is not in place, the driving valve rocker arm cannot drive the shaft body. The assembly accuracy requirements are high and the assembly steps are cumbersome. After long-term use, the valve rocker arm and the shaft body will become loose, causing the mechanical water pump to fail. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a control valve suitable for automobile water pumps in view of the deficiencies of the above-mentioned prior art, which reduces the difficulty of assembly, improves the assembly efficiency and prolongs the service life.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a control valve suitable for an automobile water pump, comprising a valve body and a valve core movably arranged in the valve body, wherein the outer peripheral surface of the valve body is provided with a liquid passage for coolant to pass through the valve body, the upper end of the valve body is provided with a rocker arm that drives the valve core to move back and forth in a vertical direction to control the opening and closing of the liquid passage, and a transmission structure for transmitting torque is provided between the rocker arm and the valve core.

[0006] The utility model with the above characteristics: The valve core is driven by a rocker arm to reciprocate vertically to control the opening and closing of the liquid passing channel. This design is simpler and more intuitive compared to a rotary valve core, reducing the complexity of rotary sealing and also lowering the assembly difficulty. Since the valve core moves vertically instead of rotating, the friction area and wear points between the valve core and the valve body are reduced, which helps to improve the overall sealing effect and extend the service life.

[0007] A further setting of the utility model is that: the valve core includes a valve core part cooperating with the valve body and a rack part, the rocker arm includes a rocker arm body and a gear shaft, the transmission structure is the mutually meshing rack part and gear shaft, the rack part is arranged vertically, and the gear shaft is arranged horizontally.

[0008] The utility model with the above characteristics: Adopts the meshing mode of rack and gear as the connection structure between the valve core and the rocker arm. Compared with the connection structure of the rocker arm and the valve core in the background technology, during assembly, it only needs to mesh the rack part with the rocker arm in place, without the need for interference fit, reducing the assembly difficulty and precision requirements, improving the assembly efficiency, facilitating disassembly and assembly, and being beneficial for subsequent maintenance.

[0009] A further setting of the utility model is that: the valve core and the valve body are sleeved and both are hollow inside. The outer peripheral surface of the valve core is in contact with the inner wall of the valve body. At least one first water inlet window and at least one first water outlet window are provided on the outer peripheral surface of the valve body. The first water inlet window and the first water outlet window form a liquid passing channel. At least one second water inlet window adapted to the first water inlet window and at least one second water outlet window adapted to the first water outlet window are provided on the outer peripheral surface of the valve core. When the second water inlet window coincides with the first water inlet window and the first water outlet window coincides with the second water outlet window, the liquid passing channel is opened. When the first water inlet window coincides with the outer peripheral surface of the valve core, the liquid passing channel is closed.

[0010] The utility model with the above characteristics: By correspondingly providing water inlet windows and water outlet windows on the valve body and the valve core, the purpose of driving the valve core to move up and down to control the opening and closing of the liquid passing channel is achieved. The way of opening and closing the liquid passing channel can quickly respond to the cooling requirements of the engine. The outer peripheral surface of the valve core is closely attached to the inner wall of the valve body, forming a good sealing surface. When the liquid passing channel is closed, the first water inlet window is completely blocked by the valve core, further enhancing the sealing effect and ensuring the sealing performance of the water pump. By adjusting the moving distance and speed of the valve core, the opening degree and flow rate of the liquid passing channel can be flexibly controlled to meet the requirements of the engine for coolant under different working conditions.

[0011] A further setting of the present utility model is that: several first water inlet windows are provided on the outer peripheral surface of the valve body, which are sequentially distributed in the vertical direction. A first barrier portion is formed between two vertically distributed first water inlet windows. Several second water inlet windows are provided on the outer peripheral surface of the valve core, which are sequentially distributed in the vertical direction. A second barrier portion is formed between two vertically distributed second water inlet windows. The cross-sectional area of the first water inlet window is the same as that of the second barrier portion, and the cross-sectional area of the second water inlet window is the same as that of the first barrier portion.

[0012] The present utility model with the above characteristics: By providing a plurality of first water inlet windows and second water inlet windows, the flow rate of the coolant can be precisely adjusted according to the real-time requirements of the engine, improving the cooling efficiency. The cross-sectional area of the first water inlet window is the same as that of the second barrier portion, and the cross-sectional area of the second water inlet window is the same as that of the first barrier portion. This matching design ensures that when the second water inlet window coincides with the first water inlet window, the coolant can pass through smoothly, and when they do not coincide, an effective barrier is formed to prevent coolant leakage. Compared with the single large window design, the design of multiple small windows reduces the risk of stress concentration and extends the service life of the water pump.

[0013] A further setting of the present utility model is that: a first reinforcing rib is provided in the first water inlet window and is arranged in the vertical direction. The first reinforcing rib is located in the middle of the first water inlet window and divides the first water inlet window into two parts. A second reinforcing rib is provided in the second water inlet window and is arranged along the set direction. The second reinforcing rib is located in the middle of the second water inlet window and divides the second water inlet window into two parts. The outer peripheral surface of the second reinforcing rib is in contact with the inner wall of the first reinforcing rib.

[0014] The present utility model with the above characteristics: The first reinforcing rib and the second reinforcing rib are respectively located in the middle of their respective water inlet windows and divide the windows into two parts. This design significantly enhances the structural strength of the water inlet window area. When the coolant flows, especially when the flow rate is large or the pressure is high, the reinforcing ribs can effectively resist the stress generated by the water flow impact and prevent the window from deforming or cracking.

[0015] A further setting of the present utility model is that: the outer peripheral surface of the first barrier portion includes a first water inlet surface inclined towards the lower end of the valve body, a second water inlet surface inclined towards the upper end of the valve body, and a connecting surface connecting the first water inlet surface and the second water inlet surface. The connecting surface is the outer peripheral surface of the valve body.

[0016] The present utility model with the above characteristics: By providing inclined surfaces on the outer peripheral surface of the first barrier portion in contact with the coolant, the resistance when the coolant passes through is reduced, enabling the coolant to pass through the valve body more smoothly, thereby improving the overall efficiency of the water pump.

[0017] A further setting of the present utility model is that a rocker arm seat is detachably connected to the valve body. The rocker arm seat includes a bottom plate and two placement blocks arranged on the bottom plate. A rack through hole for the rack portion to penetrate is provided on the bottom plate. The two placement blocks are arranged on both sides of the rack through hole. The gear shaft is installed on the two placement blocks. The gear of the gear shaft is suspended above the rack through hole and meshes with the rack portion. The rocker arm body is perpendicular to the gear shaft. The rocker arm body is located outside one of the placement blocks, and a limit block for restricting the swing angle of the rocker arm body is provided on the outer peripheral surface of this placement block.

[0018] The present utility model with the above characteristics: By setting the placement blocks for mounting the rocker arm, the gear shaft is horizontally installed on the rocker arm seat so that it can mesh with the vertically placed rack portion; the detachable connection between the rocker arm seat and the rocker arm cover facilitates the installation of the rocker arm; by restricting the swing amplitude of the rocker arm body, the rising height of the valve core is restricted, preventing the valve from failing due to the valve core being unable to cooperate with the valve when it rises excessively.

[0019] A further setting of the present utility model is that a rocker arm cover is detachably connected to the rocker arm seat. The rocker arm cover includes a cover body and two splicing blocks arranged on the cover body. The cover body and the placement block are detachably connected by fasteners. The splicing blocks are located at the interval between the two placement blocks and are spliced with the placement blocks. A sealed space for the gear shaft and the rack portion to move is formed between the rocker arm cover and the rocker arm seat. A first arc groove for placing the gear shaft is provided on the placement block, and a second arc groove corresponding to the first arc groove is provided on the cover body. The first arc groove and the second arc groove cooperate to clamp the gear shaft.

[0020] The present utility model with the above characteristics: The rocker arm seat and the rocker arm cover are spliced, and a sealed space for the gear shaft and the rack portion to move is formed between them, which can prevent impurities from entering and affecting the service life of the gear shaft and the rack portion; a first arc groove for placing the gear shaft is provided on the placement block, and a second arc groove is provided at the corresponding position on the cover body. The two cooperate to clamp the gear shaft. This design not only provides stable support for the gear shaft but also ensures the coaxiality and stability of the gear shaft during rotation through the precise arc groove design, thereby improving the transmission accuracy and reliability.

[0021] The present utility model will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of the valve when it is opened in the embodiment of the present utility model.

[0023] Figure 2 It is an exploded view of the embodiment of the present utility model.

[0024] Figure 3 It is a schematic structural diagram of the valve body in the embodiment of the present utility modelFigure 1 。

[0025] Figure 4 This is a schematic diagram of the structure of the valve body in the embodiment of the present utility model. Figure 2 。

[0026] Figure 5 This is a schematic diagram of the structure of the valve core in the embodiment of the present utility model. Figure 1 。

[0027] Figure 6 This is a schematic diagram of the structure of the valve core in the embodiment of the present utility model. Figure 2 。

[0028] Figure 7 This is a schematic diagram of the structure of the rocker arm seat in the embodiment of the present utility model.

[0029] Figure 8 This is a schematic diagram of the structure of the rocker arm, rocker arm seat and valve core in the embodiment of the present utility model.

[0030] Figure 9 This is a schematic diagram of the structure of the rocker arm cover in the embodiment of the present utility model.

[0031] Figure 10 This is a schematic diagram of the structure of the present utility model installed on an automotive water pump.

[0032] Figure 11 This is a schematic diagram of the structure of the present utility model when the valve is closed. Detailed implementation manners

[0033] This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the Patent Law.

[0034] Such as Figures 1-11 A control valve applicable to an automotive water pump shown in the figure includes a valve body 1, a valve core 2 movably arranged in the valve body 1. A liquid passing channel for coolant to pass through the valve body 1 is provided on the outer peripheral surface of the valve body 1. A rocker arm 3 for driving the valve core 2 to reciprocate vertically to control the opening and closing of the liquid passing channel is provided at the upper end of the valve body 1. A transmission structure for transmitting torque is provided between the rocker arm 3 and the valve core 2. A rocker arm seat 4 is detachably connected to the valve body 1, and a rocker arm cover 5 is detachably connected to the rocker arm seat 4.

[0035] The valve core 2 includes a valve core part 21 cooperating with the valve body 1 and a rack part 22. The rocker arm 3 includes a rocker arm body 31 and a gear shaft 32. The transmission structure is the mutually meshing rack part 22 and gear shaft 32. The rack part 22 is arranged vertically, and the gear shaft 32 is arranged horizontally.

[0036] The valve core 2 is sleeved with the valve body 1 and both of them are hollow inside. The valve body 1 includes a cylindrical valve body part 11 and a connecting part 12 arranged at the end of the valve body part 11. The valve core part 21 of the valve core 2 is cylindrical, and its outer peripheral surface is in contact with the inner wall of the valve body part 11. At least one first water inlet window 111 and at least one first water outlet window 112 are provided on the outer peripheral surface of the valve body part 11 to realize the basic function of the valve. In this embodiment, a plurality of first water inlet windows 111 are arranged on the outer peripheral surface of the valve body part 11 in sequence along the vertical direction. A first barrier part 113 is formed between two vertically arranged first water inlet windows 111. One first water outlet window 112 is provided on the outer peripheral surface of the valve body part 11. The upper side edge of the first water outlet window 112 is at the same height as the upper side edge of the first first water inlet window 111. The lower side edge of the first water outlet window 112 is at the same height as the lower side edge of the last first water inlet window 111. The first water inlet window 111 and the first water outlet window 112 form a liquid passing channel. At least one second water inlet window 211 adapted to the first water inlet window 111 and at least one second water outlet window 212 adapted to the first water outlet window 112 are provided on the outer peripheral surface of the valve core part 21 to realize the basic function of the valve. In this embodiment, a plurality of second water inlet windows 211 are arranged on the outer peripheral surface of the valve core part 21 in sequence along the vertical direction. A second barrier part 213 is formed between two vertically arranged second water inlet windows 211. The cross-sectional area of the first water inlet window 111 is the same as the cross-sectional area of the second barrier part 213. The cross-sectional area of the second water inlet window 211 is the same as the cross-sectional area of the first barrier part 113. One corresponding second water outlet window 212 is provided on the outer peripheral surface of the valve core part 21. The upper side edge of the second water outlet window 212 is at the same height as the upper side edge of the first second water inlet window 211. The second water outlet window 212 is not provided with a lower side edge, that is, it is open. When the second water inlet window 211 coincides with the first water inlet window 111 and the first water outlet window 112 coincides with the second water outlet window 212, the liquid passing channel is opened. When the first water inlet window 111 coincides with the second barrier part 213, the liquid passing channel is closed.

[0037] A first reinforcing rib 114 is arranged in the first water inlet window 111 along the vertical direction. The first reinforcing rib 114 is located in the middle of the first water inlet window 111 and divides the first water inlet window 111 into two parts. A second reinforcing rib 214 is arranged in the second water inlet window 211 along the setting direction. The second reinforcing rib 214 is located in the middle of the second water inlet window 211 and divides the second water inlet window 211 into two parts. The outer peripheral surface of the second reinforcing rib 214 is in contact with the inner wall of the first reinforcing rib 114.

[0038] The outer peripheral surface of the first blocking portion 113 includes a first water inlet surface 1131 inclined towards the lower end of the valve body 1, a second water inlet surface 1132 inclined towards the upper end of the valve body 1, and a connecting surface 1133 connecting the first water inlet surface 1131 and the second water inlet surface 1132. The connecting surface 1133 is the outer peripheral surface of the valve body 1.

[0039] The rocker arm seat 4 is U-shaped and includes a bottom plate 41 and two placing blocks 42 arranged on the bottom plate 41. The connecting portion 11 between the bottom plate 41 and the valve body 1 is connected by fasteners. A rack through hole 411 for the rack portion 22 to penetrate is provided on the bottom plate 41. The placing blocks 42 are located on both sides of the rack through hole 411. The gear shaft 32 is placed on the two placing blocks 42. The rocker arm body 31 is located outside one of the placing blocks 42. A limiting block 421 for restricting the swinging angle of the rocker arm body 31 is provided on the outer peripheral surface of the placing block 42. The rocker arm cover 5 includes a cover body 51 and two splicing blocks 52 arranged on the cover body 51. The cover body 51 and the placing block 42 are detachably connected by fasteners. The splicing blocks 52 are located at the interval between the two placing blocks 42 and are spliced with the placing blocks 42. A sealed space for the movement of the gear shaft and the rack portion is formed between the rocker arm cover 5 and the rocker arm seat 4. A first arc groove 422 for placing the gear shaft 32 is provided on the placing block 42. A second arc groove 511 corresponding to the first arc groove 422 is provided on the cover body 51. The first arc groove 422 and the second arc groove 511 cooperate to clamp the gear shaft 32.

[0040] Such as Figure 10As shown in the figure, it is the overall structure of an automotive water pump, including a water pump housing 7. There is a valve body through-hole on the water pump housing 7 for the valve body 1 to pass through. There are two connecting ears 13 on the connecting part 12, and the connecting ears 13 are connected to the water pump housing 7 through fasteners. There is a connecting hole 43 on the rocker arm seat 4 that is detachably connected to the connecting ear 13 through fasteners. A power component 8 is installed on the water pump housing 7, and a connecting rod 9 is provided at its output end. The end of the connecting rod 9 is connected to the rocker arm body 31 of the rocker arm 3. By driving the connecting rod 9 to move through the power component 8, the connecting rod 9 drives the rocker arm 3 to swing. The swing of the rocker arm 3 causes the gear shaft 32 to rotate around the axis, and the rack part 22 meshing with the gear shaft 32 moves up or down in the vertical direction. The limiting block 421 provided on the placing block 42 is located on the side away from the rocker arm 3 and away from the connecting rod 9, and is used to limit the swing amplitude of the rocker arm 3. When the swing of the rocker arm 3 causes the valve core part 21 to move upward along the axis to make the second blocking part 213 coincide with the first blocking part 113, the first water inlet window 111 coincides with the second water inlet window 211, and the valve is opened at this time. When the swing of the rocker arm 3 causes the valve core part 21 to move downward along the axis to make the second blocking part 213 coincide with the first water inlet window 111, the first blocking part 113 coincides with the second water inlet window 211, and the valve is closed at this time. By adjusting the opening size of the valve, the regulation of the coolant flow rate can be achieved. That is, when all the first water inlet windows 111 coincide with all the second water inlet windows 211, the valve is fully opened, and the coolant flow rate is the largest at this time. By gradually making the first water inlet windows 111 coincide with the second blocking part 213 one by one, the valve is gradually closed, and the coolant flow rate is gradually reduced. During actual use, the coolant flow rate can be adjusted according to the actual vehicle condition;

[0041] When the engine is just started, in order to quickly increase the engine temperature to ensure normal operation, the valve needs to be closed. After the engine warms up, the valve is opened to dissipate heat and reduce the temperature of the engine. In real life, if the engine temperature is too low, the valve needs to be closed; if the engine temperature is too high, the valve needs to be opened.

Claims

1. A control valve suitable for automobile water pump, characterized in that: It includes a valve body and a valve core movably arranged in the valve body. The outer peripheral surface of the valve body is provided with a liquid passage for cooling liquid to pass through the valve body. The upper end of the valve body is provided with a rocker arm that drives the valve core to move back and forth in the vertical direction to control the opening and closing of the liquid passage. A transmission structure for transmitting torque is provided between the rocker arm and the valve core.

2. A control valve suitable for an automobile water pump according to claim 1, characterized in that: The valve core includes a valve core part and a rack part that cooperate with the valve body, the rocker arm includes a rocker arm body and a gear shaft, the transmission structure is a rack part and a gear shaft that mesh with each other, the rack part is arranged in the vertical direction, and the gear shaft is arranged in the horizontal direction.

3. A control valve suitable for an automobile water pump according to claim 1 or 2, characterized in that: The valve core is sleeved with the valve body and both are hollow inside. The outer circumferential surface of the valve core is in contact with the inner wall of the valve body. At least one first water inlet window and at least one first water outlet window are provided on the outer circumferential surface of the valve body. The first water inlet window and the first water outlet window form a liquid passage. At least one second water inlet window adapted to the first water inlet window and at least one second water outlet window adapted to the first water outlet window are provided on the outer circumferential surface of the valve core. When the second water inlet window coincides with the first water inlet window and the first water outlet window coincides with the second water outlet window, the liquid passage is opened. When the first water inlet window coincides with the outer circumferential surface of the valve core, the liquid passage is closed.

4. A control valve suitable for automobile water pump according to claim 3, characterized in that: The outer circumferential surface of the valve body is provided with a plurality of first water inlet windows distributed in sequence along the vertical direction, and a first barrier portion is formed between two first water inlet windows distributed up and down. The outer circumferential surface of the valve core is provided with a plurality of second water inlet windows distributed in sequence along the vertical direction, and a second barrier portion is formed between two second water inlet windows distributed up and down. The cross-sectional area of ​​the first water inlet window is the same as the cross-sectional area of ​​the second barrier portion, and the cross-sectional area of ​​the second water inlet window is the same as the cross-sectional area of ​​the first barrier portion.

5. A control valve suitable for automobile water pump according to claim 4, characterized in that: A first reinforcing rib arranged along a vertical direction is provided in the first water inlet window, and the first reinforcing rib is located in the middle of the first water inlet window to divide the first water inlet window into two. A second reinforcing rib arranged along a setting direction is provided in the second water inlet window, and the second reinforcing rib is located in the middle of the second water inlet window to divide the second water inlet window into two, and the outer peripheral surface of the second reinforcing rib is in contact with the inner wall of the first reinforcing rib.

6. A control valve suitable for automobile water pump according to claim 4, characterized in that: The outer peripheral surface of the first blocking portion includes a first water inlet surface inclined toward the lower end of the valve body, a second water inlet surface inclined toward the upper end of the valve body, and a connecting surface connecting the first water inlet surface and the second water inlet surface, and the connecting surface is the outer peripheral surface of the valve body.

7. A control valve suitable for automobile water pump according to claim 2, characterized in that: A rocker arm seat is detachably connected to the valve body, and the rocker arm seat includes a base plate and two placement blocks arranged on the base plate. The base plate is provided with a rack through hole for the rack part to pass through, and the two placement blocks are arranged on both sides of the rack through hole. The gear shaft is installed on the two placement blocks, and the gear of the gear shaft is suspended on the rack through hole and meshed with the rack part. The rocker arm body is vertically arranged to the gear shaft, and the rocker arm body is located on the outside of one of the placement blocks. A limit block for limiting the swing angle of the rocker arm body is provided on the outer peripheral surface of the placement block.

8. A control valve suitable for automobile water pump according to claim 7, characterized in that: A rocker cover is detachably connected to the rocker seat, and the rocker cover includes a cover body and two splicing blocks arranged on the cover body. The cover body and the placement block are detachably connected by fasteners. The splicing block is located at the interval between the two placement blocks and is spliced ​​with the placement blocks. An enclosed space for the movement of the gear shaft and the rack part is formed between the rocker cover and the rocker seat. The placement block is provided with a first arc groove for the gear shaft to be placed, and the cover body is provided with a second arc groove corresponding to the first arc groove, and the first arc groove and the second arc groove cooperate to clamp the gear shaft.

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