Water tank pressure cover with direction-adjustable flow guide pipe

Abstract

A water tank pressure cover with a flow guide pipe adjustable in direction comprises a pressure cover shell, a valve element assembly rotationally arranged on the pressure cover shell and a top cover arranged on the valve element assembly. The lower end of the valve element assembly is communicated with the interior of the pressure cover shell, a flow guide cavity is formed between the upper end of the valve element assembly and the top cover, and a flow guide pipe is arranged on the top cover and communicated with the flow guide cavity. Compared with the prior art, the water tank pressure cover provided by the utility model has the following advantages that a rotatable adjusting structure is arranged between the valve core assembly and the pressure cover shell, so that the direction of a flow guide pipe on a top cover arranged on the valve core assembly is convenient to adjust, and when the water tank pressure cover is arranged on an automobile, the water tank pressure cover is convenient to adjust; a connecting pipeline can be prevented from being bent and blocked by adjusting the direction of the flow guide pipe, and the product reliability is greatly improved; the valve element assembly and the top cover are fixed together, so that the sealing structure of the flow guide cavity cannot be changed along with the adjustment of the direction of the flow guide pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to an automobile cooling system accessory, concretely relates to a water tank pressure cover with adjustable direction of flow guide pipe. BACKGROUND

[0002] The expansion tank is an important accessory of the automobile cooling system, and the pressure cover assembly is a key accessory of the expansion tank. In the prior art, the pressure relief nozzle of the pressure cover assembly is designed at the highest position above the pressure cover assembly, and is an integral structure with the body. When the installation space in the automobile is limited, the pressure relief position and direction of the pressure cover are fixed and limited, otherwise the surrounding components will be contaminated and damaged. Therefore, the positions of the starting point and the end point of the threads of the water tank need to be strictly controlled to ensure that the pressure relief nozzle can be at the correct fixed position after the cover is tightened, which brings great difficulty to the processing and assembly of the water tank.

[0003] The utility model discloses a kind of adjustable water tank pressure cover assemblies, and the utility model discloses a utility model patent with the name of "a kind of adjustable water tank pressure cover assembly", application publication number CN 214247482 U, which is granted on September 21, 2021, the utility model includes pressure cover body, pressure relief nozzle, inner cover assembly arranged in pressure cover body, the pressure relief nozzle and the pressure cover body between are detachable structure, the pressure relief nozzle is L shape, one of the limbs of the pressure relief nozzle can be 360 ° rotationally sealedly connected in the top of the pressure cover body, the pressure relief passage in the pressure relief nozzle is communicated with the inside of the pressure cover body. In the scheme, the pressure cover and the pressure relief nozzle are provided as a split structure, and due to the small structure of the pressure relief nozzle, the number of installed sealing rings is limited, making the sealing between the pressure cover and the pressure relief nozzle relatively weak. The flow guide cavity is formed between the pressure cover and the valve core assembly, and only when the valve core assembly bears the internal pressure of the water tank exceeding the set threshold, the valve core assembly will open to allow the medium to enter the flow guide cavity. When installing the water tank pressure cover, adjusting the relative rotation between the pressure relief nozzle and the pressure cover can easily cause the sealing surface between the pressure relief nozzle and the pressure cover to fail. At this time, the internal pressure of the automobile water tank is normal, and no medium enters the flow guide cavity, so it cannot be ensured that the sealing between the pressure relief nozzle and the pressure cover of the water tank pressure cover is in a sealed state after installation, thus leaving a hidden danger. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the defects of prior art, and provides a water tank pressure cover with adjustable direction of flow guide pipe.

[0005] The main technical scheme of the water tank pressure cover with adjustable direction of flow guide pipe provided by the utility model is as follows: a pressure cover shell, a valve core assembly rotatably arranged on the pressure cover shell, and a top cover arranged on the valve core assembly are included. The lower end of the valve core assembly is communicated with the inside of the pressure cover shell, and a flow guide cavity is formed between the upper end of the valve core assembly and the top cover. A flow guide pipe is arranged on the top cover and communicated with the flow guide cavity.

[0006] The water tank pressure cover with the direction-adjustable flow guide pipe provided by the utility model further adopts the following accessory technical solutions:

[0007] Preferably, the middle part of the pressure cover shell is provided with an installation cylinder penetrating from top to bottom, the valve core assembly is provided with a rotating connecting part, the rotating connecting part is inserted into the installation cylinder and exposed from the lower end of the installation cylinder, the lower end of the rotating connecting part is axially limited and matched with the installation cylinder, and the rotating connecting part is radially rotationally matched with the installation cylinder.

[0008] Preferably, the lower end of the rotating connecting part is sleeved with an elastic baffle ring, and the elastic baffle ring is limited and matched with the installation cylinder.

[0009] Preferably, the inside of the installation cylinder is embedded with an inner sleeve, and the outer wall of the rotating connecting part is sleeved with a sealing ring, and the sealing ring is located between the outer wall of the rotating connecting part and the inner wall of the inner sleeve.

[0010] Preferably, the valve core assembly comprises the rotating connecting part and a fixed connecting part arranged at the upper end of the rotating connecting part, and the fixed connecting part is connected with the top cover.

[0011] Preferably, the pressure cover shell comprises a connecting sleeve, an installation cylinder arranged at the middle part of the connecting sleeve and a top plate connecting the installation cylinder and the connecting sleeve.

[0012] Preferably, the inner top edge of the inner sleeve is provided with a guide inclined surface.

[0013] Preferably, the axis of the flow guide pipe is perpendicular to the axis of the valve core assembly.

[0014] Preferably, the fixed connecting part is welded with the top cover.

[0015] Preferably, the top cover and the flow guide pipe are integrally formed.

[0016] Compared with the prior art, the water tank pressure cover with the direction-adjustable flow guide pipe provided by the utility model has the following advantages: the valve core assembly and the pressure cover shell are arranged as a rotatable adjusting structure, the direction of the flow guide pipe on the top cover arranged on the valve core assembly is adjusted, when the water tank pressure cover is installed on the automobile, the direction of the flow guide pipe is adjusted to avoid the connection pipeline from being bent and blocked, and the reliability of the product is greatly improved; the valve core assembly and the top cover are arranged as a fixed assembly, the sealing structure of the flow guide cavity does not change with the adjustment of the direction of the flow guide pipe, the sealing property of the flow guide cavity does not change due to the rotation of the flow guide pipe during installation, and the hidden danger cannot be found in time. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure exploded view of the water tank pressure cover.

[0018] Figure 2 It is a top view of the water tank pressure cover.

[0019] Figure 3 For Figure 2 A-A section view.

[0020] Figure 4 The structure diagram of the water tank pressure cover of the utility model. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent, obvious and easy to understand, the utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0022] Referring to Figures 1 to 4 , according to the water tank pressure cover with direction-adjustable flow guide pipe provided by the utility model, comprising a pressure cover shell 1, a valve core assembly 2 rotatably arranged on the pressure cover shell 1, and a top cover 3 arranged on the valve core assembly 2; the lower end of the valve core assembly 2 is in communication with the inside of the pressure cover shell 1, a flow guide cavity 4 is formed between the upper end of the valve core assembly 2 and the top cover 3, a flow guide pipe 31 is arranged on the top cover 3, and the flow guide pipe 31 is in communication with the flow guide cavity 4. The internal structure of the valve core assembly 2 is a relatively mature technology in the prior art, and will not be described in detail here. The utility model sets the valve core assembly 2 and the pressure cover shell 1 as a rotatable adjusting structure, which facilitates the direction adjustment of the flow guide pipe 31 arranged on the top cover 3 of the valve core assembly 2, so that when the water tank pressure cover is installed on the automobile, the direction of the flow guide pipe 31 can be adjusted to avoid the bending and blockage of the connecting pipeline, thereby greatly improving the reliability of the product; the valve core assembly 2 and the top cover 3 are set as a fixed assembly, so that the sealing structure of the flow guide cavity 4 will not change with the adjustment of the direction of the flow guide pipe 31, thereby avoiding the change of the sealing property of the flow guide cavity 4 due to the rotation of the flow guide pipe 31 during installation, and the hidden danger that cannot be found in time.

[0023] Referring to Figure 1 and Figure 3 , according to the above-mentioned embodiments of the utility model, the middle part of the pressure cover shell 1 is provided with an installation cylinder 12 which penetrates up and down, the valve core assembly 2 is provided with a rotating connection part 21, the rotating connection part 21 is inserted into the installation cylinder 12 and exposed from the lower end of the installation cylinder 12, the lower end of the rotating connection part 21 is axially limited and matched with the installation cylinder 12, and the rotating connection part 21 is radially rotatably matched with the installation cylinder 12. The valve core assembly 2 and the pressure cover shell 1 are rotatably connected in this way, which is convenient, firm and reliable in assembly.

[0024] Referring to Figure 1 and Figure 3 , according to the above-mentioned embodiments of the utility model, the lower end of the rotating connection part 21 is sleeved with an elastic retaining ring 5, and the elastic retaining ring 5 is limited and matched with the installation cylinder 12. The elastic retaining ring 5 is convenient to be clamped with the rotating connection part 21, has good stability, and has a simpler structure and is convenient to assemble.

[0025] Referring toFigure 1 and Figure 3 According to the above-mentioned embodiments of the utility model, the inner sleeve 14 is embedded in the installation cylinder 12, the outer wall of the rotating connecting part 21 is sleeved with the sealing ring 6, and the sealing ring 6 is located between the outer wall of the rotating connecting part 21 and the inner wall of the inner sleeve 14. The inner sleeve 14 is made of metal material, and specifically, a stainless steel inner sleeve 14 can be used. The inner wall surface of the inner sleeve 14 is smooth, which helps to improve the sealing performance between the sealing ring 6 on the rotating connecting part 21 and the sealing performance and smoothness during rotation. The sealing ring 6 is preferably made of rubber, and the rotating connecting part 21 is provided with a positioning groove. A part of the sealing ring 6 is located in the positioning groove, and the other part is exposed from the positioning groove.

[0026] Referring to Figure 1 and Figure 3 According to the above-mentioned embodiments of the utility model, the valve core assembly 2 includes the rotating connecting part 21 and the fixed connecting part 22 arranged at the upper end of the rotating connecting part 21, and the fixed connecting part 22 is connected with the top cover 3. The outer diameter of the fixed connecting part 22 is larger than the outer diameter of the rotating connecting part 21, which facilitates the installation of the internal components of the valve core assembly 2; and the fixed connecting part 22 is welded with the top cover 3, which is firm and has good sealing performance.

[0027] Referring to Figure 1 and Figure 3 According to the above-mentioned embodiments of the utility model, the pressure cover shell 1 includes the connecting sleeve 11, the installation cylinder 12 arranged at the middle part of the connecting sleeve 11, and the top plate 13 connecting the installation cylinder 12 and the connecting sleeve 11. The connecting sleeve 11 is provided with an inner thread matched with the water tank, and the connecting sleeve 11, the installation cylinder 12 and the top plate 13 are integrally formed. The pressure cover can adopt the above-mentioned structure, which is convenient for rotating cooperation with the valve core assembly 2, and the above-mentioned structure is convenient for processing, convenient for demolding, and has high mechanical strength.

[0028] Referring to Figure 1 According to the above-mentioned embodiments of the utility model, the inner sleeve 14 is embedded in the installation cylinder 12, the outer wall of the rotating connecting part 21 is sleeved with the sealing ring 6, and the sealing ring 6 is located between the outer wall of the rotating connecting part 21 and the inner wall of the inner sleeve 14. The inner sleeve 14 is made of metal material, and specifically, a stainless steel inner sleeve 14 can be used. The inner wall surface of the inner sleeve 14 is smooth, which helps to improve the sealing performance between the sealing ring 6 on the rotating connecting part 21 and the sealing performance and smoothness during rotation. The sealing ring 6 is preferably made of rubber, and the rotating connecting part 21 is provided with a positioning groove. A part of the sealing ring 6 is located in the positioning groove, and the other part is exposed from the positioning groove.

[0029] Referring to Figure 3 According to the above-mentioned embodiments of the utility model, the axis of the flow guide pipe 31 is perpendicular to the axis of the valve core assembly 2. The integration of the flow guide pipe 31 and the top cover 3 is facilitated, and the height of the water tank pressure cover is reduced to the minimum, thereby avoiding interference with other components when the water tank pressure cover is installed on the automobile water tank.

[0030] Referring to Figures 1 to 4 Figures 1 to 4According to the above-mentioned embodiment of the utility model, the top cover 3 and the flow guide pipe 31 are integrally formed or the top cover 3 and the flow guide pipe 31 are welded; the top cover 3 and the flow guide pipe 31 are fixed structures. Compared with the prior art, the structure facilitates the machining and manufacturing of the top cover, helps to reduce the production cost of the top cover and improve the assembly efficiency.

[0031] The above describes the technical solutions provided by the utility model in detail, the principles and implementation manners of the utility model are described by applying specific examples, the above embodiment is only used for helping to understand the method and core idea of the utility model; the words such as front, back, left, right, positive and reverse in the present solution are words used for clear description from a certain perspective, meanwhile, for the general technical personnel in the field, according to the idea of the utility model, the specific implementation manners and application range will have changes, and according to the above, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A draft tube direction adjustable water tank pressure cover, characterized in that, The valve core assembly is rotatably arranged on the pressure cover shell, and a top cover is arranged on the valve core assembly.

2. The draft tube direction adjustable water box pressure cover according to claim 1, characterized in that, The middle part of the pressure cover shell is provided with an installation cylinder penetrating through the top and bottom, the valve core assembly is provided with a rotating connecting part, the rotating connecting part is inserted into the installation cylinder and exposed from the lower end of the installation cylinder, the lower end of the rotating connecting part is limited in the axial direction with the installation cylinder, and the rotating connecting part is rotatably connected with the installation cylinder in the radial direction.

3. The draft tube direction adjustable water box pressure cover according to claim 2, characterized in that, The lower end of the rotating connecting part is sleeved with an elastic retaining ring, and the elastic retaining ring is limited with the installation cylinder.

4. The draft tube direction adjustable water box pressure cover according to claim 2, wherein, The inside of the installation cylinder is embedded with an inner sleeve, the outer wall of the rotating connecting part is sleeved with a sealing ring, and the sealing ring is located between the outer wall of the rotating connecting part and the inner wall of the inner sleeve.

5. The draft tube direction adjustable water box pressure cover according to claim 2, wherein, The valve core assembly comprises the rotating connecting part and a fixed connecting part arranged on the upper end of the rotating connecting part, and the fixed connecting part is connected with the top cover.

6. The draft tube direction adjustable water box pressure cover according to claim 2, wherein, The pressure cover shell comprises a connecting sleeve, an installation cylinder arranged in the middle part of the connecting sleeve, and a top plate connecting the installation cylinder and the connecting sleeve.

7. The draft tube direction adjustable water box pressure cover according to claim 4, wherein, The inner wall of the top part of the inner sleeve is provided with a guide inclined surface.

8. The draft tube direction adjustable water box pressure cover according to any one of claims 1-7, wherein, The axis of the flow guide pipe is perpendicular to the axis of the valve core assembly.

9. The draft tube direction adjustable water box pressure cover according to claims 5-7, characterized in that, The fixed connecting part is welded with the top cover.

10. The draft tube direction adjustable water box pressure cover according to claims 1-7, characterized in that, The top cover and the flow guide pipe are integrally formed.

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