Valve cover and valve element connecting structure and multi-way water valve thereof

Abstract

The invention discloses a valve cover and valve core connecting structure and a multi-way water valve thereof. The invention discloses a valve cover and valve element connecting structure which comprises a valve cover and a valve element. The valve cover is connected with the valve element through a bearing, and the bearing can provide axial force in the upward / downward direction for the valve element. The multi-way valve comprises the valve deck and valve element connecting structure and further comprises a valve body shell, the valve body shell is located at the lower end of the valve deck, and the valve body shell is fixedly connected with the valve deck. By arranging the deep groove ball bearing, the valve element and the valve cover are fixed, the deep groove ball bearing can provide axial force for the valve element shaft so as to balance pressure generated by high-pressure water / gas between the valve element and the valve cover, and the problem that the compression amount of an inner leakage sealing ring is increased, and the valve element is clamped is solved.

Description

Technical Field

[0001] The present invention relates to a multi-way valve for vehicles, and particularly to a connection structure between a valve cover and a valve core and a multi-way water valve thereof. Background Art

[0002] As described in the existing patent valve CN115199778A: The valve further includes a static ring sealingly connected to the valve housing, a dynamic ring sealingly connected to the valve core, and an elastic member disposed between the valve core and the dynamic ring. The elastic member is configured to provide a force to abut the dynamic ring to be dynamically sealingly connected to the static ring;

[0003] Such as Figure 1 , due to the flow of high-pressure water / gas at the inner port of the valve core and entering the valve core, valve body, and valve cover through the gap between the inner leakage seal and the valve core, and once the pressure in the upper gas interval is higher than the pressure at the bottom of the valve core, it will cause a downward pressure on the valve core, further compressing the inner leakage seal to strengthen the seal of the valve core, resulting in the inability of the high-pressure water / gas in this interval to return to the inner port of the valve core for flow;

[0004] When high-pressure water / gas flows into the lower port of the valve core, the high-pressure water / gas flows into the upper gas interval, and at the same time, the upper gas interval always remains consistent with the highest pressure of the high-pressure water / gas entering the lower port of the valve core; for example: when the high-pressure water / gas entering the lower port of the valve core is 100 kPa, the pressure in the upper gas interval is also 100 kPa, and when the high-pressure water / gas entering the lower port of the valve core is 200 kPa, the pressure in the upper gas interval also increases to 200 kPa. During the movement of the vehicle, the high-pressure water / gas entering the valve core changes at any time. Once the high-pressure water / gas in the valve core is lower than 200 kPa subsequently, it will cause the pressure in the upper gas interval to be higher than that below the valve core, resulting in the downward movement of the valve core and the downward movement of the dynamic ring, squeezing the inner leakage sealing ring to provide an upward force for the valve core to balance the valve core shaft; usually, when the pressure difference between the upper and lower is small, the compression amount of the inner leakage seal can be guaranteed within a certain range without affecting the normal operation of the subsequent valve core;

[0005] However, through multiple tests, the inventor found that once the pressure difference between the upper and lower exceeds 250 kPa (extreme case), it will cause the valve core to move downward, resulting in an excessive compression amount of the inner leakage sealing ring, greatly increasing the torque of the valve core shaft and causing the valve core to get stuck; for this reason, we propose a multi-way water valve. Summary of the Invention

[0006] The purpose of the present invention is to provide a connection structure between a valve cover and a valve core and a multi-way water valve thereof to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solution: The valve cover and the valve core are connected by a bearing, and the bearing provides axial force in both upward / downward directions to the valve core.

[0008] Preferably, the bearing is a deep groove ball bearing. The inner ring of the deep groove ball bearing is fixedly connected to the valve core shaft, and the outer ring of the deep groove ball bearing is fixedly connected to the valve cover.

[0009] Preferably, the outer ring of the deep groove ball bearing is connected to the valve cover by plastic coating, and the inner ring of the deep groove ball bearing is press-fitted with the valve core shaft with an interference fit.

[0010] The purpose of the present invention is to provide a multi-way water valve. The present invention provides the following technical solutions: including the above-mentioned valve cover and valve core connection structure, and further including a valve body housing. The valve body housing is located at the lower end of the valve cover, and the valve body housing is detachably connected to the valve cover.

[0011] Preferably, a first seal is further included. The first seal is located between the valve cover and the valve body housing to seal the valve body.

[0012] Preferably, an internal leakage seal is further provided inside the valve body housing. The internal leakage seal and the deep groove ball bearing are respectively located on two opposite axial end faces of the valve core.

[0013] Preferably, an external leakage seal is further included. The external leakage seal is arranged in a groove formed on the outer end face of the base of the valve body housing, and the thickness of the external leakage seal is greater than the depth of the groove.

[0014] Compared with the prior art, the beneficial effect of the present invention is that by providing a deep groove ball bearing to fix the valve core and the valve cover, the deep groove ball bearing can provide an axial force to the valve core shaft to balance the pressure generated by the high-pressure water / gas between the valve core and the valve cover, avoiding the problem that the compression amount of the internal leakage sealing ring becomes larger and the valve core gets stuck. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2 is a schematic structural diagram of the present invention;

[0017] Figure 3 is a schematic structural diagram of the present invention;

[0018] Figure 4 is a schematic structural diagram of the present invention;

[0019] In the figure: 1. Valve cover; 2. Deep groove ball bearing; 3. Valve core; 4. First seal; 5. Internal leakage seal; 6. Valve body housing; 7. External leakage seal; 8. Driving motor; Detailed Embodiments

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 - 4 , the present invention provides a technical solution: a connection structure between a valve cover and a valve core, including: a valve cover 1 and a valve core 3. The valve cover 1 and the valve core 3 are fixedly connected through a bearing, and the bearing can provide axial forces in the upward / downward two directions to the valve core 3; the bearing is a deep groove ball bearing 2.

[0022] Refer to Figure 1 , as recorded in the background art, when the water valve is in use, the moving ring and the static ring are arranged up and down and separated. When the pressure in the upper gas interval above the valve core is higher than the pressure below the valve core, that is, the valve core shaft moves downward, and the moving ring cannot apply an axial upward force to the valve core, and only squeezes the internal leakage sealing ring to balance the force on the valve core; in the case of a small pressure difference, the compression amount of the internal leakage sealing ring is within the preset range, and the valve core still works normally; once the pressure difference between the upper and lower exceeds 250 kpa in an extreme case, the valve core moves downward, resulting in an excessive compression amount of the internal leakage sealing ring and causing the valve core to get stuck;

[0023] However, in the present invention, by setting a deep groove ball bearing, that is, by arranging the deep groove ball bearing between the valve core and the valve cover, when the pressure in the upper gas interval above the valve core is higher than the pressure below the valve core, the inner ring of the deep groove ball bearing applies an upward force to the valve core shaft to balance the large pressure generated on the valve core due to the pressure difference between the upper and lower, reduce the compression amount of the internal leakage sealing ring, and avoid the problem of valve core jamming.

[0024] In a further embodiment, the inner ring of the deep groove ball bearing is fixedly connected to the valve core shaft, and the outer ring of the deep groove ball bearing is fixedly connected to the valve cover.

[0025] In the prior art, a static ring and a moving ring are sequentially arranged between the valve core and the valve cover from top to bottom. That is, when the valve core rotates, sliding friction is generated between the moving ring and the static ring; while in the present invention, a deep groove ball bearing is arranged between the valve core and the valve cover, so that when the valve core rotates, the valve core shaft drives the inner ring of the deep groove ball bearing to rotate, and the valve cover limits the outer ring of the deep groove ball bearing. Since steel balls are arranged between the inner ring and the outer ring of the deep groove ball, rolling friction is generated between the inner and outer rings of the deep groove ball bearing, that is, the deep groove ball bearing converts the sliding friction received by the valve core into rolling friction, thereby greatly reducing the valve opening torque;

[0026] In a further embodiment, a placement groove is provided at the lower end of the valve cover 1, the outer ring of the deep groove ball bearing 2 is integrally molded with the placement groove of the valve cover, and the inner ring of the deep groove ball bearing 2 is press-fitted with the valve core shaft 3 with an interference fit.

[0027] By press-fitting and mating the inner ring of the deep groove ball bearing 2 with the valve core shaft with an interference fit, the press-fitting height can be adjusted, machining errors can be reduced, and machining accuracy can be improved.

[0028] The present invention provides a technical solution: a multi-way water valve, further comprising a valve body housing 6, the valve body housing 6 is located at the lower end of the valve cover 1, and the valve body housing 6 is connected to the valve cover 1 by bolts; that is, it is connected by bolts to facilitate subsequent disassembly of the valve body.

[0029] In a further embodiment, it further comprises a first seal 4, the first seal 4 is located in a groove formed on the outer periphery of the valve cover 1, and the side wall of the valve body housing 6 surrounds and presses the first seal 4 in the groove, and the first seal 4 is made of rubber; that is, by providing the first seal 4 between the valve cover 1 and the valve body housing 6, and further ensuring the sealing effect of the valve body by pressing the first seal.

[0030] In a further embodiment, an internal leakage seal 5 is further provided inside the valve body housing 6, and the internal leakage seal 5 and the deep groove ball bearing 2 are respectively located on two opposite axial end faces of the valve core 3; by providing the internal leakage seal 5, the sealing effect of the multi-way valve in the internal flow passage of the valve body housing is improved.

[0031] It further comprises an external leakage seal 7, the external leakage seal 7 is arranged in a groove formed on the outer end face of the base of the valve body housing 6, and the thickness of the external leakage seal 7 is greater than the depth of the groove.

[0032] When connecting and fixing the valve body housing to an external connecting member, the external connecting member presses the external leakage seal 7 to cause deformation, so as to support the side wall of the flow port of the valve body housing 6, so that leakage does not occur between adjacent flow passages, and the sealing effect of the multi-way valve is ensured.

[0033] In a further embodiment, it further comprises a driving member 8, the driving end of the driving member is fixedly connected to the valve core shaft to drive the valve core to rotate; that is, the valve core is driven to rotate by the driving member, and the flow passage of the valve core and the flow port of the valve body housing are further adjusted to realize the adjustment of the multi-way water valve.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve cover and valve core connection structure, characterized in that: include: A valve cover (1) and a valve core (3), wherein the valve cover (1) and the valve core (3) are connected via a bearing, and the bearing provides the valve core (3) with an upward / downward bidirectional axial force.

2. A valve cover and valve core connection structure according to claim 1, characterized in that: The bearing is a deep groove ball bearing (2), the inner ring of the deep groove ball bearing (2) is fixedly connected to the valve core shaft (3), and the outer ring of the deep groove ball bearing (2) is fixedly connected to the valve cover (1).

3. A valve cover and valve core connection structure according to claim 2, characterized in that: The outer ring of the deep groove ball bearing (2) is connected to the valve cover (1) by plastic coating, and the inner ring of the deep groove ball bearing (2) is interference fit with the valve core shaft.

4. A multi-way water valve, characterized in that: It comprises the valve cover and valve core connection structure of claims 1-3, and also comprises a valve body shell (6), wherein the valve body shell (6) is located at the lower end of the valve cover (1), and the valve body shell (6) is detachably connected to the valve cover (1).

5. A multi-way water valve according to claim 4, characterized in that: The valve body also comprises a first sealing member (4), wherein the first sealing member (4) is located between the valve cover (1) and the valve body housing (6) to seal the valve body.

6. A multi-way water valve according to claim 5, characterized in that: An inner leakage seal (5) is also provided in the valve body shell (6), and the inner leakage seal (5) and the deep groove ball bearing (2) are respectively located on two opposite axial end surfaces of the valve core (3).

7. A multi-way water valve according to claim 4, characterized in that: It also includes an external leakage seal (7), which is arranged in a groove formed on the outer end surface of the base of the valve body shell (6), and the thickness of the external leakage seal (7) is greater than the depth of the groove.

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