Valve cover casting of integrated sealing structure

Abstract

The utility model discloses a valve cover casting of an integrated sealing structure, which belongs to the technical field of valve covers, and comprises a valve cover shell, the valve cover shell is movably connected with a valve body through a sealing assembly arranged below the valve cover shell, a first assembly hole is formed in the axis of the interior of the valve cover shell, a valve rod is movably arranged on the inner hole wall of the first assembly hole, and the valve rod is movably connected with the valve cover shell. A first sealing groove is formed in the top of the inner wall of the first assembly hole, a mechanical sealing ring is arranged in the first sealing groove, and a first anti-skid protrusion abutting against the inner wall of the first sealing groove is arranged on the outer wall of the mechanical sealing ring. The mechanical sealing ring, the elastic sealing ring elastically connected with the spring, the O-shaped sealing ring and the like are integrated together to form a complete sealing system, so that the sealing performance and reliability between the valve rod and the valve cover shell are improved, in addition, the sealing performance is improved through integrated sealing, installation steps and potential leakage points can be reduced, and the sealing performance is improved. And the operation stability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve cover technical field, concretely is valve cover casting of integrated sealing structure. BACKGROUND

[0002] Valve cover is a kind of mechanical parts, usually made of metal material, its shape varies. The main function of valve cover is to cover valve system, plays the role of sealing and protection. It can prevent dust, soil, debris and other impurities from entering the valve system, so as to protect the valve driving part and valve bearing, and ensure the normal distribution of oil.

[0003] The existing valve cover casting and valve rod are mostly sealed and connected in the mode of sealing ring, but the sealing effect of ordinary mechanical seal can be expected.

[0004] Therefore, the technical personnel in the prior art provide a valve cover casting of integrated sealing structure to solve the problems raised in the above background art. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a valve cover casting of integrated sealing structure to solve the deficiencies raised in the above background art.

[0006] To achieve the above utility model purposes, the utility model adopts the following technical scheme:

[0007] The utility model provides a valve cover casting of integrated sealing structure, including valve cover shell, the valve cover shell is connected with valve body by the sealing assembly of being arranged below it, the inside axial center of valve cover shell is equipped with first assembly hole, the inner hole wall of first assembly hole is movably provided with valve rod, the top of the inner wall of first assembly hole is equipped with first sealing groove, the inside of first sealing groove is provided with mechanical seal ring, the outer wall of mechanical seal ring is provided with first anti -skid protruding and first sealing groove inner wall is in contact, the inside of mechanical seal ring is equipped with first sealing hole and valve rod is matched, the inner wall of first assembly hole below first sealing groove is equipped with second sealing groove, the inner side wall of second sealing groove is provided with spring, the spring is elastically connected with sliding block, the top and bottom of sliding block are all provided with guide block, the inside top wall and bottom wall of second sealing groove are all provided with guide rod and guide block sliding is connected, the side away from spring of sliding block is provided with second seal ring, the inside of second seal ring is equipped with second sealing hole and valve rod is matched, the inner wall of first assembly hole below second sealing groove is equipped with third sealing groove, the inside of third sealing groove is provided with O type seal ring, the outer wall of O type seal ring is provided with second anti -skid protruding and third sealing groove inner wall is in contact, the inside of O type seal ring is equipped with third sealing hole and valve rod is matched.

[0008] The bottom outer side of the valve cover shell is provided with an assembly ring, and the surface of the assembly ring is equidistantly provided with a plurality of second assembly holes.

[0009] Preferably, the inner wall of the top end of the second assembly hole is provided with a guide surface, and the top of the second assembly hole is provided with a gasket matched with the assembly bolt.

[0010] Preferably, the sealing assembly comprises a waterproof sealing ring arranged on the bottom outer side of the valve cover shell and arranged between the valve cover shell and the valve body.

[0011] Preferably, the outer wall of the valve cover shell is provided with a rust-proof layer.

[0012] Preferably, the bottom inner side surface of the valve cover shell is provided with a positioning block, the bottom surface of the positioning block is provided with a positioning hole, the top surface of the valve body is provided with a positioning groove matched with the positioning block, and the inner wall of the positioning groove is provided with a positioning column matched with the positioning hole.

[0013] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:

[0014] The utility model provides a valve cover casting of integrated sealing structure, integrates assembly such as mechanical sealing ring, spring elastic connection's elastic sealing ring and O type sealing ring together, forms a complete sealing system, improves the sealing performance and reliability between valve rod and valve cover shell, in addition, improves high sealing property through integrated sealing can reduce installation step and potential leakage point, and improved the operation stability of device. BRIEF DESCRIPTION OF DRAWINGS

[0015] The description and the drawings constituting a part of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute improper limitation to the utility model.

[0016] Figure 1 It is the schematic view of the internal structure of the utility model from the main view;

[0017] Figure 2 It is the schematic view of the valve cover shell structure of the utility model;

[0018] Figure 3 It is the schematic view of the utility model Figure 1 The enlarged schematic view of A in the utility model;

[0019] Figure 4 It is the enlarged schematic view of B in the utility model Figure 1

[0020] Figure 5 ​It is the front view external structure schematic diagram of the utility model.

[0021] In the figure,

[0022] 1, valve cover shell;2, valve body;3, first assembly hole;4, valve stem;5, first sealing groove;6, mechanical seal ring;7, first anti-skid convex;8, first sealing hole;9, second sealing groove;10, spring;11, sliding block;12, guide block;13, guide rod;14, second sealing ring;15, second sealing hole;16, third sealing groove;17, O-shaped sealing ring;18, second anti-skid convex;19, third sealing hole;20, assembly ring;21, second assembly hole;22, assembly bolt;23, guide surface;24, gasket;25, waterproof sealing ring;26, anti-rust layer;27, positioning block;28, positioning hole;29, positioning groove;30, positioning column. DETAILED DESCRIPTION

[0023] In order to make the person skilled in the art better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0024] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0025] In the present application, the terms "up", "down", "left", "right", "front", "back", "top", "bottom", "in", "out", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0026] And, the above-mentioned partial terms, in addition to can be used to express the orientation or position relationship, possibly also be used to express other meanings, for example, the term "upper" in some cases can also be used to express a certain dependent relationship or connection relationship. For those of ordinary skill in the art, the specific meaning of these terms in this application can be understood according to the specific circumstances.

[0027] In addition, the terms "mount", "set", "provided with", "connected", "connected", "socketed" should be broadly understood. For example, it can be a fixed connection, a detachable connection, or a monolithic structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0028] As the description of the drawings Figures 1-5As shown, this utility model provides a valve cover casting with an integrated sealing structure, including a valve cover housing 1. A valve body 2 is movably connected to the valve cover housing 1 via a sealing assembly located below it. A first assembly hole 3 is provided at the axial center of the valve cover housing 1. A valve stem 4 is movably disposed on the inner wall of the first assembly hole 3. A first sealing groove 5 is provided at the top of the inner wall of the first assembly hole 3. A mechanical sealing ring 6 is disposed inside the first sealing groove 5. A first anti-slip protrusion 7 is provided on the outer wall of the mechanical sealing ring 6, abutting against the inner wall of the first sealing groove 5. A valve stem 4 is provided inside the mechanical sealing ring 6, which has a sealing groove that abuts against the valve stem 2. The first sealing hole 8, which is compatible with the valve stem 4, has a second sealing groove 9 on the inner wall of the first assembly hole 3 located below the first sealing groove 5. A spring 10 is installed on the inner wall of the second sealing groove 9, and a slider 11 is elastically connected to the spring 10. Guide blocks 12 are installed at the top and bottom of the slider 11. Guide rods 13, which are slidably connected to the guide blocks 12, are installed on the top and bottom walls of the inner wall of the second sealing groove 9. A second sealing ring 14 is installed on the side of the slider 11 away from the spring 10. A second sealing hole 15, which is compatible with the valve stem 4, is opened inside the second sealing ring 14. The spring... The elastic telescopic pusher 11 of 10 pushes the second sealing ring 14 closer to the valve stem 4 as the guide block 12 slides on the guide rod 13. A third sealing groove 16 is formed on the inner wall of the first assembly hole 3 located below the second sealing groove 9. An O-ring 17 is provided inside the third sealing groove 16. A second anti-slip protrusion 18 is provided on the outer wall of the O-ring 17, abutting against the inner wall of the third sealing groove 16. A third sealing hole 19, adapted to the valve stem 4, is formed inside the O-ring 17. In specific implementation, this utility model uses the first sealing hole 19 within the first sealing groove 5... The sealing ring, the second sealing ring 14 in the second sealing groove 9, and the third sealing ring in the third sealing groove 16 form an integrated sealing structure to perform integrated sealing work at the connection between the valve cover housing 1 and the valve stem 4. The mechanical sealing ring 6, the elastic sealing ring connected by the spring 10, and the O-ring sealing ring 17 are integrated together to form a complete sealing system, thereby improving the sealing performance and reliability between the valve stem 4 and the valve cover housing 1. In addition, the high sealing performance improved by the integrated sealing can reduce installation steps and potential leakage points, and improve the operational stability of the device.

[0029] like Figure 1 , Figure 2 , Figure 4 As shown, in this embodiment, an assembly ring 20 is provided on the bottom outer side of the valve cover housing 1. A plurality of second assembly holes 21 are equally spaced on the surface of the assembly ring 20. An assembly bolt 22 is movably disposed inside each second assembly hole 21. In specific implementation, the valve cover housing 1 and the valve body 2 are fixedly assembled by driving the assembly bolt 22 into the second assembly hole 21 on the assembly ring 20.

[0030] As a preferred embodiment of this utility model, it is therefore preferred that, as Figure 4As shown, the inner wall of the top end of the second assembly hole 21 is provided with a guide surface 23, and the top of the second assembly hole 21 is provided with a gasket 24 matched with the assembly bolt 22, so that the assembly bolt 22 is more smoothly punched into the second assembly hole 21 through the arrangement of the guide surface 23, and the assembly bolt 22 is spaced from the assembly ring 20 through the arrangement of the gasket 24 after the assembly bolt 22 is assembled, thereby avoiding direct contact between the two to cause wear.

[0031] As a preferred scheme of the utility model, preferably, as shown in the drawings, Figure 1 As shown, the sealing assembly comprises a waterproof sealing ring 25 arranged outside the bottom of the valve cover shell 1, the waterproof sealing ring 25 is arranged between the valve cover shell 1 and the valve body 2, and the waterproof sealing ring 25 is arranged between the valve cover shell 1 and the valve body 2, so that the connection between the valve cover shell 1 and the valve body 2 is sealed, and accidental water seepage into the inside through the connection between the two is avoided.

[0032] As a preferred scheme of the utility model, preferably, as shown in the drawings, Figure 1 、 Figure 2 As shown, the outer wall of the valve cover shell 1 is attached with a rust-proof layer 26, the rust-proof layer 26 is coated with rust-proof paint, and the rust-proof paint is graphite rust-proof paint (prior art).

[0033] As a preferred scheme of the utility model, preferably, as shown in the drawings, Figure 4 As shown, the bottom of the valve cover shell 1 is provided with a positioning block 27, the bottom surface of the positioning block 27 is provided with a positioning hole 28, the top surface of the valve body 2 is provided with a positioning groove 29 connected with the positioning block 27, the inner wall of the positioning groove 29 is provided with a positioning column 30 matched with the positioning hole 28, the positioning block 27 is inserted into the positioning groove 29, and the positioning column 30 is embedded into the positioning hole 28, so that the connection between the valve cover shell 1 and the valve body 2 is more stable and firm, and double fixation of the device is realized in addition to the assembly of the assembly ring 20 and the assembly bolt 22.

[0034] Working principle:

[0035] Referring to the drawings of the present application Figures 1-5, the valve cover shell 1 is connected with the valve body 2 by driving the assembly bolt 22 into the second assembly hole 21 on the assembly ring 20, the assembly bolt 22 can be guided into the second assembly hole 21 by the guide surface 23 during the process of driving the assembly bolt 22 into the second assembly hole 21, the gasket 24 can directly reduce the abrasion between the assembly bolt 22 and the assembly ring 20 after installation, meanwhile, the positioning block 27 on the valve cover shell 1 is inserted into the positioning groove 29 on the valve body 2, and the positioning column 30 in the positioning groove 29 is inserted into the positioning hole 28 to realize the positioning between the valve cover shell 1 and the valve body 2, then the valve rod 4 is inserted into the valve cover shell 1 along the first assembly hole 3 and penetrates through the valve body 2, when the valve rod 4 is inserted into the first assembly hole 3, the integrated sealing structure composed of the first sealing ring in the first sealing groove 5, the second sealing ring 14 in the second sealing groove 9 and the third sealing ring in the third sealing groove 16 is used to carry out the integrated sealing work on the connecting part between the valve cover shell 1 and the valve rod 4, so as to further improve the sealing effect. The above is only the preferred embodiment of the utility model, and the parts not mentioned in the utility model can be realized by using or referring to the existing technology. Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples, the changes, modifications, additions or replacements made by the technical personnel in the technical field within the essential range of the utility model should also belong to the protection range of the utility model.

Claims

1. An integrated sealing structure valve cover casting comprising a valve cover housing (1), characterized in that, The valve cover shell (1) is movably connected with a valve body (2) through a sealing assembly arranged below the valve cover shell (1), a first assembly hole (3) is arranged at the inner shaft of the valve cover shell (1), a valve rod (4) is movably arranged on the inner hole wall of the first assembly hole (3), a first sealing groove (5) is arranged on the top inner wall of the first assembly hole (3), a mechanical sealing ring (6) is arranged in the first sealing groove (5), a first anti-slip protrusion (7) is arranged on the outer wall of the mechanical sealing ring (6) and abuts against the inner wall of the first sealing groove (5), a first sealing hole (8) is arranged in the mechanical sealing ring (6) and is matched with the valve rod (4), a second sealing groove (9) is arranged on the inner wall of the first assembly hole (3) below the first sealing groove (5), a spring (10) is arranged on the inner side wall of the second sealing groove (9), a sliding block (11) is elastically connected with the spring (10), guide blocks (12) are arranged on the top and bottom of the sliding block (11), guide rods (13) are arranged on the inner top wall and bottom wall of the second sealing groove (9) and are slidably connected with the guide blocks (12), a second sealing ring (14) is arranged on the side of the sliding block (11) away from the spring (10), a second sealing hole (15) is arranged in the second sealing ring (14) and is matched with the valve rod (4), a third sealing groove (16) is arranged on the inner wall of the first assembly hole (3) below the second sealing groove (9), an O-shaped sealing ring (17) is arranged in the third sealing groove (16), a second anti-slip protrusion (18) is arranged on the outer wall of the O-shaped sealing ring (17) and abuts against the inner wall of the third sealing groove (16), and a third sealing hole (19) is arranged in the O-shaped sealing ring (17) and is matched with the valve rod (4). A plurality of second assembly holes (21) are equidistantly arranged on the surface of the assembly ring (20) arranged on the outer side of the bottom of the valve cover shell (1), and an assembly bolt (22) is movably arranged in each second assembly hole (21).

2. An integrated seal-structured head casting according to claim 1, characterized in that: A guide surface (23) is arranged on the top inner wall of the second assembly hole (21), and a gasket (24) matched with the assembly bolt (22) is arranged on the top of the second assembly hole (21).

3. An integrated seal-structured head casting according to claim 1, wherein: The sealing assembly comprises a waterproof sealing ring (25) arranged on the outer side of the bottom of the valve cover shell (1), and the waterproof sealing ring (25) is arranged between the valve cover shell (1) and the valve body (2).

4. An integrated seal-structured head casting according to claim 1, wherein: A rust-proof layer (26) is arranged on the outer wall of the valve cover shell (1).

5. An integrated seal-structured head casting according to claim 1, wherein: A positioning block (27) is arranged on the inner side surface of the bottom of the valve cover shell (1), a positioning hole (28) is arranged on the bottom surface of the positioning block (27), a positioning groove (29) matched with the positioning block (27) is arranged on the top surface of the valve body (2), and a positioning column (30) matched with the positioning hole (28) is arranged on the inner wall of the positioning groove (29).

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