RU2614439C1 - Shut-off needle valve of cartridge installation - Google Patents

Abstract

FIELD: machine engineering.

SUBSTANCE: shut-off needle valve of the cartridge installation comprises a casing consisting of two interacting parts. The passage channel is made inside the casing, having the inlet and outlet channels. One casing part comprises a shutt-off valve as a needle, adapted to move axially along the longitudinal valve axis. The second casing part comprises a saddle located in the said passage channel. The shut-off valve interacts with the saddle by its operating part. The part of the valve casing, containing the saddle, as well as the inlet and outlet channels are located in the solid plate. The said channels are interconnected through the said casing part forming a passage channel. The sealing saddle surface with the O-ring between the saddle and the casing part, is made parallel to the docking surface of the shut-off valve and the saddle, and interacts with the casing response surface to its end.

EFFECT: increasing the valve tightness.

3 dwg

Description

The invention relates to valve engineering and can be used in the development of devices for overlapping and pressure relief systems in communications.

Known shut-off valve containing a housing provided with an inlet, outlet and bypass holes, while the inlet is connected to the bypass by means of a hole located at an angle to it, a shut-off element located in the bypass hole, mounted with a cylindrical rod mounted for movement connected to threaded sleeve and indirectly with a flywheel, while the housing is made integral in the form of a tetrahedral prism, the inlet and outlet openings are threaded, in addition, the outlet it is connected to the bypass by means of an opening, the axis of which is eccentric to the axis of the outlet, a saddle is placed in the bypass, which has the ability to contact the end surface of one of the ends of the locking member, the second end of the locking member is stepped, the end of the stage, fixed to the rod, made rounded, while the rod is made stepped and connected to the housing by means of a sleeve equipped with an external thread at one end and an internal thread at the other end, through which it is connected to the running sleeve (RF Patent for utility model No. 135049, application No. 2012103818/06 of 03/03/2012, IPC: F16K 1/02, F16K 27/02, F16K 1/48 - prototype).

The specified shut-off valve operates as follows.

In the initial position, the valve is in the open position. In this position, the working medium from the pipeline element enters the inlet of the housing, then, through the additional inlet, the medium passes into the bypass hole, and from there, through the additional outlet and the outlet, the medium flows further into the pipeline elements. The saddle is installed in the bypass hole of the housing by plastic deformation.

The valve is overlapped by rotating the flywheel clockwise, while the stem, by means of the running sleeve, is transmitted in the direction of the saddle. The movement of the rod occurs along the stuffing box gaskets installed inside the connecting sleeve until the tapered surface of the locking member comes into contact with the seat. The shut-off element is mounted on the stem with the possibility of axial rotation and swing, which ensures its self-installation in the saddle and thereby the flow of the working medium is blocked in the bypass hole.

If it is necessary to open the valve or tighten the packing, rotate the flywheel counterclockwise, thereby raising the stem and opening the bypass hole.

The disadvantages are the complexity of the design, leaky connections in the input and output channels when docking with external pipelines, loss of working fluid in the places of installation of the valve in the hydraulic system of the device.

The objective of the proposed technical solution is to eliminate these drawbacks and create a needle shut-off valve, the use of which will ensure the required tightness of the joints in the input and output channels, reduce the loss of the working fluid and simplify the valve design.

The solution to this problem is achieved by the fact that, in the proposed valve shut-off needle cartridge mounting (hereinafter referred to as the needle valve), comprising a housing consisting of two parts interacting with each other, and inside the housing there is a passage channel having supply and exhaust channels, while one part the housing contains a locking body in the form of a needle, made with the possibility of axial movement along the longitudinal axis of the valve, and the second part contains a saddle located in the said passage channel, while the locking body inter acts with the seat of its working part, according to the invention, the valve body part containing the seat, as well as the inlet and outlet channels are made in a continuous plate, and these channels are connected to each other through the said part of the body, forming a passage channel, while the sealing surface of the seat with the sealing ring between the saddle and part of the housing is made parallel to the surface of the docking of the locking element and the saddle and interacts with the mating surface of the housing part with its end face.

The invention is illustrated by drawings, where in FIG. 1 shows a needle valve in a closed position before it is installed in a continuous plate; FIG. 2 - where in FIG. 1 shows a needle valve in the closed position after it is installed in a continuous plate; FIG. 3 - shows the needle valve in the open position after it is installed in a continuous plate.

The needle valve comprises a housing, consisting of two parts 1 and 2 interacting with each other by means of a thread. A passage 3 is made inside the housing, having a supply 4 and a discharge 5 channels, respectively. Part of the housing 1 contains a locking member 6 in the form of a needle 7, made with the possibility of axial movement along the longitudinal axis of the valve. The second part 2 contains a seat 8 with a sealing lip located in the said passage channel 3. The locking member 6 interacts with the seat 8 with its working part, which is self-installing on the needle 7. Part 2 of the valve body, containing the seat 8, is installed in a continuous plate 9, which is made inlet 10 and outlet 11 channels. These channels 10 and 11 are connected to each other through the said part of the housing 2 and channels 4 and 5, forming a passage channel, while the sealing surface of the seat 8 with the sealing ring 12 between the seat and the body part is parallel to the surface of the joint of the working part of the locking member 6 and saddles 8 and interacts with the mating surface of part of the housing 2 with its end 13. In the upper part of the locking element 6 is installed a flywheel 14.

The proposed needle valve operates as follows.

Previously, the housing parts 1, 2 and the locking member 6 are assembled together and installed in a continuous plate 9 using an external thread made on the locking member 6 (not indicated). The assembled indicated parts are installed in a continuous plate 9 and abut against the counter surface of the plate with an end face 13, while the place of their interaction is sealed with a sealing ring 12. The inlet channel 10 and the outlet channels 11 made in the continuous plate 9 are connected to the inlet 4 and the outlet 5 channels made in the housing part 2, respectively. Thus, the needle valve is connected to the hydraulic system of the device.

To open the needle valve, using the flywheel 14, rotate the locking element 6, mounted in the housing part 1 by means of a thread. The working part of the locking member 6 moves away from the saddle 8 with a sealing lip, and an annular gap is formed between them, into which the working fluid enters from channel 10. The working fluid passes through channel 4 and passage channel 3 to channel 5, then to channel 11 and further into the hydraulic system for future use.

To close the needle valve, using the flywheel 14, rotate the locking member 6 in the direction opposite to the rotation when opening. The working part of the locking member 6 moves to the seat 8 with a sealing lip, and sits on it, thereby blocking the flow of the working fluid from channel 4, into which the working fluid from channel 10 enters. Channel 4 and channel 5 are open, and the working fluid does not enter into the hydraulic system for future use.

Using the proposed technical solution will create a needle cartridge valve, the use of which will ensure the required tightness of the joints in the input and output channels, reduce the loss of the working fluid and simplify the valve design.

Claims (1)

Cartridge-type needle-type shut-off valve comprising a housing consisting of two interacting parts, moreover, a passage channel is provided inside the housing having supply and outlet channels, while one part of the housing contains a shut-off member in the form of a needle made with the possibility of axial movement along the longitudinal axis the valve, and the second part contains a seat located in the aforementioned passage channel, while the locking body interacts with the seat with its working part, characterized in that the valve body part on, containing the seat, as well as the inlet and outlet channels are made in a continuous plate, and these channels are connected to each other through the said part of the body, forming a passage channel, while the sealing surface of the seat with the sealing ring between the seat and the body part is made parallel to the locking surface of the locking body and saddle and interacts with the mating surface of the body part with its end face.

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