CN210003844U - stop valves with low production cost - Google Patents

Abstract

The utility model discloses a cut-off valve with low production cost, which comprises a valve body, a connecting ring is fixedly installed on both sides of the valve body, a threaded column is fixedly installed on the top of the inner wall of the valve body, and the threaded column is fixed on the top of the valve body. The bottom end is fixedly installed with a limiting button, the surface of the threaded column is threadedly sleeved with a threaded connection pipe, and the surface of the threaded connection pipe is fixedly sleeved with a first valve flap and a second valve flap. The globe valve with low production cost can drive the valve stem to rotate by pulling the hand-held strip, and drive the threaded connecting pipe to rotate and move upward on the surface of the threaded column through the connecting arm and the connecting piece, thereby driving the first valve disc and the second valve plate. The valve disc moves upwards to make the valve stem slide inside the sealing gasket and the valve hole, so as to achieve the effect of setting the limit mechanism in the valve, and achieve the goal of reducing the space occupied by the mechanism outside the valve, which is suitable for small spaces. The application is more flexible, and the hand-held slats are set for control, which reduces the production cost compared with handwheel control.

Description

A globe valve with low production cost

technical field

The utility model relates to the technical field of cut-off valves, in particular to a cut-off valve with low production cost.

Background technique

The globe valve, also known as the gate valve, is a forced-sealing valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to force the sealing surface to not leak. When the medium enters the valve from below the valve disc, the operating force needs to overcome the resistance. , is the friction force between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the diameter of the valve stem should be larger, otherwise the valve stem top bending failure will occur, press the connection There are three ways: flange connection, thread connection and welding connection. After the appearance of the self-sealing valve, the medium flow direction of the globe valve is changed from the top of the valve disc into the valve cavity. At this time, under the action of the medium pressure, the valve is closed. The force of the valve is small, and the force to open the valve is large, and the diameter of the valve stem can be reduced accordingly.

At present, the control stem and handwheel of the globe valve on the market, as well as the stem limiting mechanism, are large in size and are placed outside, which is difficult to apply to some places with small space, and is very inflexible to use.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a cut-off valve with low production cost, which solves the problem that the control valve stem and handwheel and the valve stem limiting mechanism of the cut-off valve currently on the market are bulky and are all placed outside. , it is difficult to apply to some places with small space, and it is very inflexible to use.

In order to achieve the above purpose, the present utility model adopts the following technical solutions: a globe valve with low production cost, comprising a valve body, two sides of the valve body are fixedly installed with connecting rings, and the top of the inner wall of the valve body is fixedly installed There is a threaded column, the bottom end of the threaded column is fixedly installed with a limiting button, the surface of the threaded column is threadedly sleeved with a threaded connection pipe, and the surface of the threaded connection pipe is fixedly sleeved with a first valve flap and a second valve. The second valve flap is located below the first valve flap, a connecting piece is fixedly installed below the outer surface of the threaded connection pipe, and a connecting arm is fixedly installed at the bottom of the connecting piece, and the bottom of the connecting arm is fixedly installed with a connecting piece. The valve stem, the bottom of the valve body is provided with a valve hole, the bottom opening of the valve hole is fixedly installed with a sliding pipe, the pipe wall of the sliding pipe is provided with a sealing gasket, and the valve stem is slidably connected to the valve hole and the valve hole. Inside the sealing gasket, a hand-held strip is fixedly installed at the bottom end of the valve stem.

Preferably, the top of the connecting piece is fixedly connected with the bottom of the second valve flap.

Preferably, the connecting arm is a U-shaped rod.

Preferably, the number of the connecting pieces is two, and the two connecting pieces are respectively located at both ends of the connecting arm.

Preferably, the sealing gasket is made of fluororubber material.

Preferably, the threaded post and the limit button are made of stainless steel.

Compared with the prior art, the beneficial effect of the present utility model is that the cut-off valve with low production cost can drive the valve stem to rotate by pulling the hand-held strip, and drive the threaded connection pipe to the threaded column through the connecting arm and the connecting piece. The surface rotates and moves upward, thereby driving the first valve disc and the second valve disc to move upward, so that the valve stem slides inside the sealing gasket and the valve hole, so as to achieve the effect of setting the limit mechanism in the valve and realize the reduction of the valve. The goal of the space occupied by the external mechanism is suitable for places with small space, and it is more flexible in application, and the hand-held slats are set for control, which reduces the production cost compared with handwheel control.

Description of drawings

Fig. 1 is the front sectional view of the utility model structure;

FIG. 2 is an enlarged view of the structure of the connecting arm of the present invention.

In the picture: 1 valve body, 2 connecting ring, 3 threaded column, 4 limit button, 5 threaded connecting pipe, 6 first valve disc, 7 second valve disc, 8 connecting piece, 9 connecting arm, 10 valve stem, 11 Valve hole, 12 slide pipe, 13 sealing gasket, 14 hand-held strip.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Referring to Figure 1-2, a globe valve with low production cost includes a valve body 1, a connecting ring 2 is fixedly installed on both sides of the valve body 1, a threaded post 3 is fixedly installed on the top of the inner wall of the valve body 1, and the threaded post 3 The bottom end is fixedly installed with a limit button 4, the threaded column 3 and the limit button 4 are made of stainless steel, the surface of the threaded column 3 is threadedly socketed with a threaded connection pipe 5, and the surface of the threaded connection pipe 5 is fixedly socketed with a No. A valve flap 6 and a second valve flap 7, and the second valve flap 7 is located below the first valve flap 6, a connecting piece 8 is fixedly installed under the outer surface of the threaded connection pipe 5, and the top of the connecting piece 8 is connected to the second valve flap. The bottom of the flap 7 is fixedly connected, and the bottom of the connecting piece 8 is fixedly installed with a connecting arm 9, the connecting arm 9 is a U-shaped rod, the number of the connecting piece 8 is two, and the two connecting pieces 8 are respectively located on the two sides of the connecting arm 9. A valve stem 10 is fixedly installed at the bottom of the connecting arm 9, a valve hole 11 is formed through the bottom of the valve body 1, a sliding pipe 12 is fixedly installed at the bottom opening of the valve hole 11, and the pipe wall of the sliding pipe 12 is provided with a sealing gasket 13, and the valve stem 10 is slidably connected to the inside of the valve hole 11 and the sealing washer 13. The sealing washer 13 is made of fluororubber material, and the bottom end of the valve stem 10 is fixedly installed with a hand-held strip 14. By pulling the hand-held strip 14 , the valve stem 10 can be driven to rotate, and the threaded connection pipe 5 is driven to rotate and move upward on the surface of the threaded column 3 through the connecting arm 9 and the connecting piece 8, thereby driving the first valve disc 7 and the second valve disc 6 to move upward, so that the valve The rod 10 slides inside the sealing gasket 13 and the valve hole 11, so as to achieve the effect of setting the limit mechanism in the valve, and achieve the goal of reducing the space occupied by the mechanism outside the valve, which is suitable for places with small space and is more flexible in application , and the hand-held strip 14 is set for control, which reduces the production cost compared with hand-wheel control.

To sum up, the low production cost cut-off valve can drive the valve stem 10 to rotate by pulling the hand-held strip 14, and drive the threaded connection pipe 5 to rotate on the surface of the threaded column 3 through the connecting arm 9 and the connecting piece 8 and upwards. move, thereby driving the first valve flap 7 and the second valve flap 6 to move upward, so that the valve stem 10 slides inside the sealing washer 13 and the valve hole 11, so as to achieve the effect of setting the limiting mechanism in the valve and realize the reduction of The goal of the space occupied by the external mechanism of the valve is suitable for places with small space, which is more flexible in application, and the hand-held strip 14 is set for control, which reduces the production cost compared with the handwheel control, and solves the control of the globe valve currently on the market. The valve stem and handwheel and the valve stem limiting mechanism are large in size and are placed outside, which is difficult to apply to some places with small space, and it is very inflexible to use.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. A globe valve with low production cost, comprising a valve body (1), characterized in that a connecting ring (2) is fixedly installed on both sides of the valve body (1), and the inner wall of the valve body (1) A threaded column (3) is fixedly installed on the top of the threaded column (3), a limiting button (4) is fixedly installed at the bottom end of the threaded column (3), and a threaded connection pipe (5) is threadedly sleeved on the surface of the threaded column (3). The surface of the threaded connection pipe (5) is fixedly sleeved with a first valve flap (6) and a second valve flap (7), and the second valve flap (7) is located below the first valve flap (6), so A connecting piece (8) is fixedly installed below the outer surface of the threaded connection pipe (5), and a connecting arm (9) is fixedly installed at the bottom of the connecting piece (8), and a valve is fixedly installed at the bottom of the connecting arm (9). A rod (10), a valve hole (11) is formed through the bottom of the valve body (1), a sliding pipe (12) is fixedly installed at the bottom opening of the valve hole (11), and the sliding pipe (12) A sealing gasket (13) is provided on the pipe wall of the valve stem (10), and the valve stem (10) is slidably connected to the inside of the valve hole (11) and the sealing washer (13). (14). 2 . The globe valve with low production cost according to claim 1 , wherein the top of the connecting piece ( 8 ) is fixedly connected with the bottom of the second valve flap ( 7 ). 3 . 3. The shut-off valve with low production cost according to claim 1, wherein the connecting arm (9) is a U-shaped rod. 4. A globe valve with low production cost according to claim 3, characterized in that the number of the connecting pieces (8) is two, and the two connecting pieces (8) are respectively located on the connecting arms (9) both ends of . 5 . The globe valve with low production cost according to claim 1 , wherein the sealing gasket ( 13 ) is made of fluororubber material. 6 . 6 . The globe valve with low production cost according to claim 1 , wherein the threaded post ( 3 ) and the limiting button ( 4 ) are made of stainless steel. 7 .

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