CN218000468U - A valve with good sealing performance - Google Patents

Abstract

The utility model discloses a valve with good sealing performance, which relates to the technical field of valves. The valve aims to solve the technical problems that the internal structure of the valve is simple in the prior art, and the water flow often leaks from the connection during use, and the valve has poor sealing performance. . The valve includes a valve body shell, water flow pipes are installed at the left and right ends of the valve body shell, a valve stem is movably connected to the upper end of the valve body shell, a ball plug is installed at the lower end of the valve stem, and symmetrically distributed sealing seats are installed at the upper and lower ends of the ball plug. The valve uses a sealing device inside the valve body shell to prevent water flow from overflowing, improve the sealing performance of the valve, and avoid the phenomenon that the water flow will leak from the connection when the valve is opened or closed. The sealing device reduces the installation gap between the pipe and the valve body as much as possible, improves the sealing performance between the pipe and the valve body, increases the sealing and anti-seepage performance of the pipe joint, and effectively solves the problem of water leakage at the joint.

Description

A valve with good sealing performance

technical field

The utility model belongs to the field of valves, in particular to a valve with good sealing performance.

Background technique

A valve is a mechanical device that controls the flow, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are basic components in piping systems. During the closing process, the liquid will overflow from the threaded connection, and sometimes the valve will not be closed tightly after closing, which often leads to problems such as water leakage.

At present, the utility model patent with the patent number CN201511031050.7 discloses a valve, including: a valve body, the valve body is the body of a normally open valve or a normally closed valve; a control part, the control part is arranged on the valve body to control the valve The opening and closing of the control part is provided with a see-through part; the first display part, the first display part is installed on the valve body and the first display part is provided with the first identification part; the second display part, the second display part is installed on the In the control part, the second display part includes a second marking part and a third marking part. When the control part controls the opening and closing of the valve, the see-through part sees through the second marking part or the third marking part, wherein, when the see-through part sees through the second marking part, Then the main body of the valve is in the correct opening and closing state; when the perspective part sees through the third identification part, the main body of the valve is in the wrong opening and closing state. It makes it easier for the operator to judge whether the normally open valve and the normally closed valve are in the correct opening and closing state, effectively avoids the wrong state of the normally open valve being closed or the normally closed valve being normally open, and reduces potential safety hazards. Although the valve is effective Avoiding the error state of normally open valve closed or normally closed valve normally open reduces potential safety hazards, but it cannot avoid the problem of water leakage in the valve during use, and the sealing performance of the valve needs to be improved.

Therefore, in view of the above-mentioned daily valves that are difficult to avoid during the use process, the valve often has the problem of water leakage, and it is urgent to improve the sealing performance of the valve, so as to improve the use scene of the valve.

Utility model content

(1) Technical problems to be solved

Aiming at the deficiencies of the prior art, the purpose of this utility model is to provide a valve with good sealing performance. Poor technical issues.

(2) Technical solution

In order to solve the above technical problems, the utility model provides such a valve with good airtightness, the valve includes a valve body shell, wherein, the left and right ends of the valve body shell are equipped with water flow pipes, and the upper end of the valve body shell is movably connected There is a valve stem, the lower end of the valve stem is equipped with a ball plug, and the upper and lower ends of the ball plug are installed with symmetrically distributed sealing seats. The upper end of the valve body shell is provided with a protection cavity, and the gap between the protection cavity and the valve stem A sealing sleeve is movably connected to the outer side of the valve rod through bearings, and the valve body shell is movably connected to the water flow pipeline through a pipeline sealing assembly.

When using the valve of this technical solution, use the pipe sealing assembly to install and seal the water flow pipes at the left and right ends of the valve body shell, and then turn the ball plug through the valve stem to control the water flow. The ball plug is provided with symmetrical sealing seats above and below to prevent water from overflowing , At the same time, the connecting bearing at the lower end of the protection chamber is also equipped with a trapezoidal sealing sleeve, which further prevents water from overflowing and improves the sealing performance of the valve.

Further, the spherical plug is provided with a through channel communicating front and back, and the cross section of the through channel is circular, which can control the flow rate of the flowing water, and is easy to operate and stable in structure.

Further, the pipeline sealing assembly adopts a ring structure, and the pipeline sealing assembly is symmetrically distributed around the center of the valve body shell, and is tightly connected and not easy to leak.

Further, the pipeline sealing assembly includes a first flange, a second flange, an inner sleeve, an inner slot, a sealing gasket, a sealing groove, a sealing ring and fixing bolts, and the left and right ends of the valve body shell are fixed A first flange is connected, and a second flange is fixedly connected to the end of the water flow pipe close to the valve body shell, which increases the sealing and anti-seepage performance of the pipe connection, and effectively solves the problem of water leakage at the connection.

Further, an inner sleeve is fixedly connected to the inner side of the second flange, an inner slot is fixedly connected to the inner side of the valve body shell, and the inner sleeve is flexibly connected to the inner slot, and sealing measures are also taken inside, The possibility of water overflow is further reduced.

Further, a gasket is movably connected between the first flange and the second flange, a sealing groove is formed at the end of the first flange away from the valve body shell, and the second flange is close to the valve body. One end of the body shell is fixedly connected with a sealing ring, the sealing groove and the sealing ring are flexibly connected, and the first flange, the second flange and the sealing pad are flexibly connected by fixed bolts distributed in an annular equidistant manner, Reduce the installation gap between the pipe and the valve body as much as possible, and improve the sealing performance between the pipe and the valve body.

(3) Beneficial effect

Compared with the prior art, the utility model has the beneficial effect that: the valve of the utility model uses a sealing device inside the valve body shell to prevent the water flow from overflowing, improve the sealing performance of the valve, and prevent the water flow from leaking during the opening or closing process of the valve. The phenomenon of leakage from the connection, the sealing device is added at the connection between the valve body shell and the water flow pipe, the installation gap between the pipe and the valve body is reduced as much as possible, the sealing performance between the pipe and the valve body is improved, and the sealing performance of the pipe connection is increased. Sealing and anti-seepage, effectively solve the problem of water leakage at the joint.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of a specific embodiment of a valve of the present invention;

Fig. 2 is a schematic diagram of the front internal structure of the valve body shell of a specific embodiment of the valve of the present invention;

Fig. 3 is a schematic diagram of the assembly structure of the valve body shell and the water flow pipeline in a specific embodiment of the valve of the present invention;

Fig. 4 is a structural schematic diagram of a pipeline sealing assembly in a specific embodiment of the valve of the present invention.

The marks in the drawings are: 1. Valve body shell; 2. Water flow pipe; 3. Ball plug; 4. Seal seat; 5. Valve stem; Seal assembly; 901, first flange; 902, second flange; 903, inner sleeve; 904, inner slot; 905, sealing gasket; 906, sealing groove; 907, sealing ring; 908, fixing bolt; 10. Through the channel.

detailed description

This specific embodiment is used for a valve with good sealing performance. Its three-dimensional structural diagram is shown in Figure 1, and its internal structure diagram of the front of the valve body shell 1 is shown in Figure 2. Both ends of the valve body shell 1 are equipped with water flow pipes 2, the upper end of the valve body shell 1 is movably connected with a valve stem 5, the lower end of the valve stem 5 is installed with a ball plug 3, and the upper and lower ends of the ball plug 3 are installed with symmetrically distributed sealing seats 4 , the upper end of the valve body shell 1 is provided with a protection cavity 6, the protection cavity 6 and the valve stem 5 are movably connected through a bearing 8, the outer side of the valve stem 5 is movably connected with a sealing sleeve 7, and the valve body shell 1 and the water flow pipeline 2 are connected through a pipeline The sealing assembly 9 is movably connected, and the ball plug 3 is provided with a through passage 10 communicating front and back. The cross section of the through passage 10 is circular, which can control the flow of flowing water, and is easy to operate and stable in structure.

Among them, the pipeline sealing assembly 9 adopts a ring structure, and the pipeline sealing assembly 9 is symmetrically distributed around the center of the valve body shell 1. The connection is tight and it is not easy to leak. The pipeline sealing assembly 9 includes a first flange 901, a second flange Disc 902, inner sleeve 903, inner slot 904, sealing gasket 905, sealing groove 906, sealing ring 907 and fixing bolt 908, the left and right ends of the valve body shell 1 are fixedly connected with the first flange 901, and the water flow pipe 2 is close to One end of the valve body shell 1 is fixedly connected with a second flange 902, which increases the sealing and anti-seepage performance of the pipe joint, and effectively solves the problem of water leakage at the joint. The inner side of the second flange 902 is fixedly connected with an inner sleeve 903, the inner side of the valve body shell 1 is fixedly connected with an inner slot 904, and the inner sleeve 903 and the inner slot 904 are flexibly connected, and sealing measures are also taken inside to further reduce the possibility of water overflow. The first flange 901 A sealing gasket 905 is movably connected with the second flange 902, a sealing groove 906 is provided at the end of the first flange 901 away from the valve body shell 1, and a sealing groove 906 is fixed at the end of the second flange 902 close to the valve body shell 1. ring 907, the sealing groove 906 and the sealing ring 907 are flexibly connected, and the first flange 901, the second flange 902 and the gasket 905 are flexibly connected by fixed bolts 908 distributed in an annular equidistant manner, reducing as much as possible The installation gap between the pipe and the valve body improves the sealing performance between the pipe and the valve body.

The schematic diagram of the assembly structure of the valve body shell 1 and the water flow pipeline 2 is shown in FIG. 3 , and the structural diagram of the pipeline sealing component 9 is shown in FIG. 4 .

When using the valve of this technical solution, use the pipeline sealing assembly 9 to install and seal the water flow pipeline 2 at the left and right ends of the valve body shell 1, and then control the flow of water through the gap of the through channel 10 of the ball plug 3 through the valve stem 5, the ball plug 3 Symmetrical sealing seats 4 are arranged up and down to prevent water from overflowing. At the same time, the connecting bearing 8 at the lower end of the protection chamber 6 is also provided with a trapezoidal sealing sleeve 7 to further prevent water from overflowing and improve the sealing performance of the valve. A flange 901 is connected to the second flange 902 of the water flow pipe 2, the inner sleeve 903 of the second flange 902 is inserted into the inner slot 904, and the inside is sealed. At the same time, the first flange 901 and the second flange A sealing gasket 905 is provided at the installation place of the flange plate 902, and is fixed by fixing bolts 908. On the contact surface between the first flange plate 901 and the second flange plate 902, a sealing groove 906 and a sealing ring 907 are provided for re-sealing. Reduce the installation gap between the pipe and the valve body as much as possible at the connection, and improve the sealing performance between the pipe and the valve body.

Claims (6)

1. A valve with good sealing performance, the valve comprises a valve body shell (1), characterized in that, the left and right ends of the valve body shell (1) are equipped with water flow pipes (2), and the valve body shell (1) ) is movably connected with a valve stem (5), the lower end of the valve stem (5) is equipped with a ball plug (3), and the upper and lower ends of the ball plug (3) are equipped with symmetrically distributed sealing seats (4), so The upper end of the valve body shell (1) is provided with a protection cavity (6), the protection cavity (6) is movably connected with the valve stem (5) through a bearing (8), and the outside of the valve stem (5) is movably connected with A sealing sleeve (7), the valve body shell (1) and the water flow pipeline (2) are flexibly connected through a pipeline sealing assembly (9). 2. A valve with good sealing performance according to claim 1, characterized in that, the ball plug (3) is provided with a through passage (10) communicating front and back, and the cross section of the through passage (10) is circular . 3. A valve with good sealing performance according to claim 1, characterized in that, the pipeline sealing assembly (9) adopts a ring structure, and the pipeline sealing assembly (9) is based on the valve body shell (1 ) is symmetrically distributed around the center. 4. A valve with good sealing performance according to claim 1, characterized in that, the pipeline sealing assembly (9) comprises a first flange (901), a second flange (902), an inner sleeve (903), inner slot (904), sealing gasket (905), sealing groove (906), sealing ring (907) and fixing bolt (908), and the left and right ends of the valve body shell (1) are fixedly connected with The first flange (901), the second flange (902) is fixedly connected to the end of the water flow pipe (2) close to the valve shell (1). 5. A valve with good sealing performance according to claim 4, characterized in that, the inner side of the second flange (902) is fixedly connected with an inner sleeve (903), and the inner side of the valve body shell (1) An inner slot (904) is fixedly connected, and the inner sleeve (903) is flexibly connected to the inner slot (904). 6. A valve with good sealing performance according to claim 4, characterized in that a gasket (905) is movably connected between the first flange (901) and the second flange (902) , the end of the first flange (901) away from the valve body shell (1) is provided with a sealing groove (906), and the end of the second flange (902) close to the valve body shell (1) is fixedly connected with a sealing ring (907), the sealing groove (906) and the sealing ring (907) are flexibly connected, and the first flange (901), the second flange (902) and the gasket (905) pass through The fixing bolts (908) distributed equidistantly in the ring are flexibly connected.

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