Water valve sealing gasket structure capable of achieving 360-degree sealing through lap joint

Abstract

The utility model discloses a water valve sealing gasket structure achieving 360-degree sealing through lap joint, and relates to the technical field of water valve sealing, the water valve sealing gasket structure comprises a sealing gasket body, the sealing gasket body can be wound into an end-to-end connected cylindrical structure from an unfolded and tiled state, and a lap joint and a sealing limiting head are arranged at the two free ends of the end-to-end connected position of the sealing gasket body respectively. A plurality of flow holes are formed in the sealing gasket body; when the sealing gasket body is in lap joint and matched end to end, the inner side flow limiting area, the transverse sealing area and the outer side flow limiting area are formed between the opposite faces of the sealing gasket body, and a small gap between the inner side flow limiting area and the outer side flow limiting area plays a flow limiting role, so that the sealing pressure of the transverse sealing area is reduced; the transverse sealing area can also achieve a good sealing effect under the interference fit of extrusion force; therefore, a 360-degree structure is achieved, the upper limit of the number of the flow holes is improved, and meanwhile the problems that the structure is complex and the cost is increased due to the series-parallel connection mode of the valve set and the use of a check block are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water valve sealing, in particular to a water valve gasket structure that realizes 360° sealing through lapping. Background Technique

[0002] In a multi-way valve of a new energy vehicle thermal management system, a water valve gasket acts on the on-off sealing of the water valve. The failure of the water valve gasket will directly lead to the failure of the multi-way valve, resulting in liquid leakage and unstable working conditions of the multi-way valve, thereby affecting the normal operation of the thermal management system.

[0003] Since the water valve gasket has a certain elasticity, if it is directly integrally processed into a 360° sealing structure, the following problems will occur: (1) The forming cavity of the processing mold is a closed cavity, and it is difficult to guarantee the processing quality and impossible to eject the mold; (2) It is difficult to adapt to the minute deformation and unevenness of the valve sealing surface, so it cannot completely fit some positions and cannot be adjusted adaptively, thus resulting in leakage; (3) It is difficult to ensure that all parts of the 360° integrally formed gasket completely fit the valve sealing surface during installation, and the installation and calibration are difficult.

[0004] Especially in the case of large flow rates, the above situation is particularly obvious. In the current technology, the form of a 270° multi-section and multi-group valve with a stopper is basically adopted to ensure large flow rates, which leads to a relatively complex structure, and the use of hard stoppers also greatly increases the use cost of the water valve gasket; at the same time, this combination method also limits the flow rate of the total assembly switch, and more valve groups need to be connected in series or in parallel, further increasing the cost and structural complexity. Therefore, we provide a water valve gasket structure that realizes 360° sealing through lapping. Content of the Utility Model

[0005] The purpose of the utility model is to provide a water valve gasket structure that realizes 360° sealing through lapping.

[0006] The technical problems solved by the utility model are as follows:

[0007] (1) The problem that the existing water valve gasket products cannot achieve 360° integral forming sealing and need to perform interference fit sealing through accessories such as stoppers;

[0008] (2) The flow rate of the total assembly switch is insufficient, and only more valve groups can be connected in series or in parallel, resulting in high costs.

[0009] The present utility model can be realized through the following technical solutions: A water valve gasket structure that achieves 360° sealing through lapping, including a gasket body, which can be wound from an unfolded and flattened state into a cylindrical structure with the head and tail connected. At the two free ends of the gasket body at the head and tail connection position, a lapping head and a sealing limit head are respectively arranged. A plurality of flow holes are provided on the gasket body. The 360° water valve gasket structure can have more flow holes than the sealing structure formed by the cooperation of the 270° product and the stopper, thereby reducing or avoiding the use of series and parallel connections of valve groups.

[0010] A further technical improvement of the present utility model lies in that: when the lapping head and the sealing limit head are in lapping cooperation, three regions are formed between their opposite faces, including an inner flow-limiting region, a transverse sealing region, and an outer flow-limiting region.

[0011] A further technical improvement of the present utility model lies in that: when the gasket body is installed and used in a cylindrical structure, its force direction is radial. In the inner flow-limiting region and / or the outer flow-limiting region, the normal line of the opposite faces of the lapping head and the sealing limit head is different from the force direction, generating a fitting gap to form flow limitation.

[0012] A further technical improvement of the present utility model lies in that: in the transverse sealing region, the normal line of the opposite faces of the lapping head and the sealing limit head is consistent with the force direction, generating an interference fit to form a seal.

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

[0014] The present utility model winds the gasket body into a cylindrical structure to achieve head and tail connection. When the lapping head and the sealing limit head at the head and tail are in lapping cooperation, three regions are formed between their opposite faces, including an inner flow-limiting region, a transverse sealing region, and an outer flow-limiting region. The small gaps in the inner and outer limiting regions play a role in flow limitation, thereby reducing the sealing pressure in the transverse sealing region. In valve groups with a larger diameter or flow rate, the transverse sealing region can also achieve a good sealing effect under the interference fit of the extrusion force; furthermore, while achieving a 360-degree structure and increasing the upper limit of the number of flow holes, it ensures good sealing performance, avoiding the problems of complex structure and increased cost caused by the series and parallel forms of valve groups and the use of stoppers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the accompanying drawings.

[0016] Figure 1 It is a schematic structural diagram of the present utility model in the mold release state;

[0017] Figure 2 It is a schematic structural diagram of the working assembly state of the present utility model;

[0018] Figure 3 For the present utility model Figure 2 Partial enlarged schematic view of the structure at position A in the present utility model

[0019] In the figure: 1. Sealing gasket body; 101. Flow hole; 102. Lapping joint; 103. Limit sealing head; a. Inner flow-limiting area; b. Transverse sealing area; c. Outer flow-limiting area Specific embodiments

[0020] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, elaborate in detail on the specific embodiments, structures, features and their effects of the present utility model

[0021] Please refer to Figures 1-3 As shown, a water valve sealing gasket structure that realizes 360° sealing by lapping includes a sealing gasket body 1. When the sealing gasket body 1 is in the unfolded and laid-flat state, it is in a rectangular state as Figure 1 shown. Lapping joints 102 and limit sealing heads 103 are respectively arranged on the left and right sides of the sealing gasket body 1

[0022] When the sealing gasket body 1 is installed and used, the lapping joint 102 is brought into contact with the limit sealing head 103, so as to be connected end to end into a cylindrical structure, obtaining a water valve sealing gasket structure with 360° sealing in the lapped state, as Figure 2 shown

[0023] A number of flow holes 101 are opened on the side wall of the cylindrical sealing gasket body 1. The number of flow holes 101 is significantly more than that of the sealing structure formed by the cooperation of the 270° product and the block in the prior art, which can meet a greater flow demand, and thus eliminates the problems of structural complexity and increased cost caused by the parallel or series structure of the valve group

[0024] As Figure 3 shown, in this lapping structure, there are three matching areas between the lapping joint 102 and the limit sealing head 103, namely the inner flow-limiting area a, the transverse sealing area b and the outer flow-limiting area c. After the lapping part of the sealing gasket in this lapping structure is assembled, the lapping part is subjected to extrusion deformation. The force application directions of the inner flow-limiting area a and the outer limiting area c are both in the radial direction along the rotation axis. The normal direction of the mating surface between the lapping joint 102 and the limit sealing head 103 in the inner flow-limiting area a and the outer limiting area c is inconsistent with the force application direction, so that the sealing effect cannot be achieved, but due to the existence of a small gap, a flow-limiting effect can be achieved

[0025] At the position of the transverse sealing area b, the normal direction of the relative mating surface between the overlapping joint 102 and the limiting sealing head 103 is consistent with the force direction, and the transverse functional sealing can be realized through the deformation force of extrusion interference. Moreover, due to the existence of the two internal and external flow-limiting areas, the sealing requirement for the transverse sealing area b is weakened, so that the sealing effect of the transverse sealing area b can meet the sealing requirement. Furthermore, the flow transportation control with a larger cross-sectional area can be realized, the cost can be reduced, and the efficiency can be improved.

[0026] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A water valve sealing gasket structure with overlapping to achieve 360° sealing, characterized in that: The invention comprises a sealing gasket body (1), which can be rolled up from an unfolded flat state into a cylindrical structure with end-to-end connection, and the two free ends of the sealing gasket body (1) at the end-to-end connection position are respectively provided with a lap joint (102) and a sealing limit head (103), and the sealing gasket body (1) is provided with a plurality of flow holes (101).

2. A water valve sealing gasket structure with overlapping to achieve 360° sealing according to claim 1, characterized in that: When the overlap joint (102) and the sealing limit head (103) are overlapped, three areas are formed between their opposing surfaces, including an inner flow limiting area (a), a transverse sealing area (b) and an outer flow limiting area (c).

3. A water valve sealing gasket structure with overlapping to achieve 360° sealing according to claim 2, characterized in that: When the sealing gasket body (1) is installed in a cylindrical structure for use, the force direction is radial. In the inner flow limiting area (a) and / or the outer flow limiting area (c), the normal lines of the relative surfaces of the lap joint (102) and the sealing limit head (103) are different from the force direction, resulting in a matching gap and forming a flow limit.

4. A water valve sealing gasket structure with overlapping to achieve 360° sealing according to claim 3, characterized in that: In the transverse sealing area (b), the normal lines of the opposing surfaces of the lap joint (102) and the sealing limit head (103) are consistent with the force direction, thereby generating an interference fit and forming a seal.

Images