TWM513956U - Improved structure for control valve - Google Patents

Description

Control valve improved structure

This creation relates to an improved structure of a control valve, and more particularly to a control valve that can reliably achieve the effect of stopping leakage and avoiding leakage after prolonged use, and thus can improve the structure by relatively improving the safety of use.

The general control valve is used in a fluid circuit, such as a gas circuit or a liquid circuit, and the control valve controls the conduction or non-conduction of the fluid or the flow of the fluid by controlling the sliding of the internal components.

In addition, general control valves are provided with a leak-stop structure that prevents fluid leakage while the control valve is operating. Traditionally, the common leak-stop structure is a rubber leak-proof gasket or a rubber leak-proof ring, such as an O-type rubber leak-proof ring, but for a rubber leak-proof ring on a sliding internal member, it is long in the control valve. After use, it is easy to fail due to continuous sliding friction or long-term exposure to high temperature of the fluid, thereby causing safety problems of leakage of fluids such as steam gas.

Therefore, the present invention proposes an improved structure of a control valve that can solve the above problems, which can surely achieve the effect of stopping leakage, avoiding the problem of leakage after prolonged use, and thus can relatively improve the safety in use.

The improved control valve structure of the present invention comprises a body, a valve plug, an upper cover, a mandrel and a metal bellows. Wherein the body includes a lateral inlet, a lateral outlet and a longitudinal opening, the lateral inlet, the lateral outlet and the longitudinal opening are in communication with each other; the valve plug is laterally located within the body and sliding along the longitudinal opening; The upper cover is laterally disposed on the body and correspondingly covers the longitudinal opening; the mandrel is longitudinally located on the body, and one end of the mandrel is coupled to the valve plug, and the other end of the mandrel is slidably disposed on the The metal bellows is longitudinally located in the body and surrounds the mandrel, and the two ends of the metal bellows are respectively coupled to the valve plug and the upper cover.

With the above structural design, it is possible to achieve the effect of stopping the leakage, avoiding the problem of leakage after prolonged use, and thus relatively improving the safety of use.

The cross section of the metal bellows described above is corrugated.

One of the two ends of the metal bellows described above is welded to one of the valve plug and the upper cover.

The metal bellows described above is a stainless steel metal bellows.

The above structure further includes a further metal bellows, the other metal bellows being longitudinally located within the body and covering the mandrel.

The cross section of the other metal bellows described above is corrugated.

The other metal bellows described above is a stainless steel metal bellows.

The body extends longitudinally with an extension, and the longitudinal opening is located on the extension.

The body is longitudinally attached with an elongated sleeve, and the longitudinal opening It is located on the elongated sleeve.

1‧‧‧Control valve improved structure

2‧‧‧ Ontology

20‧‧‧Extension

21‧‧‧Horizontal entrance

22‧‧‧lateral exit

23‧‧‧Longitudinal opening

24‧‧‧Long sleeve

3‧‧‧ Valve plug

4‧‧‧Upper cover

5‧‧‧Metal bellows

6‧‧‧ mandrel

7‧‧‧Another metal bellows

7’‧‧‧Other metal bellows

7”‧‧‧Other metal bellows

1 is a perspective view of a first preferred embodiment of the present invention.

Figure 2 is a cross-sectional view of a first preferred embodiment of the present invention.

3 is a perspective view of the metal bellows of the first preferred embodiment of the present invention.

Figure 4 is a cross-sectional view of a second preferred embodiment of the present invention.

Figure 5 is a cross-sectional view showing a third preferred embodiment of the present invention.

Figure 6 is a cross-sectional view showing a fourth preferred embodiment of the present invention.

Figure 7 is a cross-sectional view showing a fifth preferred embodiment of the present invention.

Figure 8 is a cross-sectional view showing a sixth preferred embodiment of the present invention.

1 and FIG. 3, FIG. 1 is a perspective view of a first preferred embodiment of the present invention, and FIG. 2 is a cross-sectional view of the first preferred embodiment of the present invention. FIG. A perspective view of a metal bellows of the first preferred embodiment of the present invention.

As shown in the figure, a control valve modification structure 1 is shown in the drawings, and the control valve modification structure 1 includes a body 2, a valve plug 3, an upper cover 4, a mandrel 6, and a metal bellows 5.

The body 2 includes a lateral inlet 21, a lateral outlet 22, and a longitudinal opening 23. The lateral inlet 21, the lateral outlet 22 and the longitudinal opening 23 communicate with each other; the valve plug 3 is laterally located within the body 2 and slides along the longitudinal opening 23. Move; the upper cover 4 is horizontally disposed on The main body 2 is correspondingly covered with a longitudinal opening 23; the mandrel 6 is longitudinally located on the body 2, and one end of the mandrel 6 is coupled to the valve plug 3, and the other end of the mandrel 6 is slidably disposed on the upper cover 4; 5 (please refer to FIG. 3) is longitudinally located in the body 2 and surrounds the mandrel 6, and the two ends of the metal bellows 5 are respectively coupled to the valve plug 3 and the upper cover 4.

In operation, for example, when performing flow and flow control of a fluid (not shown, such as high temperature steam gas), fluid may flow from the lateral inlet 21 of the body 2 and out of the lateral outlet 22 of the body 2, and at this time, With the longitudinal sliding of the valve plug 3 and the mandrel 6, fluid flow and flow control, and other related mechanical devices (not shown) can be actuated (for example, the mandrel 6 pushes other related mechanical devices under longitudinal sliding). When the valve plug 3 and the mandrel 6 slide longitudinally on the body 2, the metal bellows 5 also slides relative to each other.

In the above structural design, the metal bellows 5 is used as a leak-proof member, so the body 2 does not need to be provided with a rubber leakage stop gasket or a rubber leak stop ring as conventionally. Furthermore, the metal bellows 5 can avoid the problem that the leakage stoppers such as the conventional rubber leakage preventing gasket or the rubber leakage preventing ring are easily broken by the continuous sliding friction or the high temperature of the fluid for a long time. In other words, the above-mentioned structural design utilizes the metal bellows 5 as a leak-off member, which can achieve the effect of reliably stopping leakage, avoiding the problem of leakage after prolonged use, and thus relatively improving the safety of use.

Further, as shown in the figure, in the present embodiment, the cross section of the metal bellows 5 is corrugated.

In the present embodiment, the two ends of the metal bellows 5 are respectively joined to the valve plug 3 and the upper cover 4 by welding. Of course, the ends of the metal bellows 5 can also be connected in other ways. The valve plug 3 is attached to the upper cover 4, for example, by a screw (not shown). Alternatively, one of the two ends of the metal bellows 5 may be welded to one of the valve plug 3 and the upper cover 4, and the other of the two ends of the metal bellows 5 may be screw-locked to the valve plug 3 and the upper cover. The other of 4.

In addition, in the present embodiment, the metal bellows 5 is a stainless steel metal bellows, and stainless steel is used as the material of the metal bellows 5, which can more certainly avoid the problem of long-term failure of high temperature of the fluid.

Please refer to FIG. 4, which is a cross-sectional view of a second preferred embodiment of the present invention. In the present embodiment, the main structure is the same as the first preferred embodiment described above, except that the other metal telescopic bladder 7 is additionally included, and the other metal bellows 7 is longitudinally located in the body 2 and covered with the core. Axis 6. The structural design of the embodiment can also achieve the various functions described in the first preferred embodiment.

The other metal bellows 7 described above is also a leak-proof member, and in the present embodiment, the other metal bellows 7 has a corrugated shape and is also a stainless steel metal bellows.

Please refer to FIG. 5, which is a cross-sectional view of a third preferred embodiment of the present invention. In the present embodiment, the main structure is the same as that of the first preferred embodiment described above, except that the body 2 extends longitudinally with an extension 20, and the longitudinal opening 23 is located on the extension 20. The structural design of the embodiment can also achieve the various functions described in the above preferred embodiments.

Please refer to FIG. 6, which is a cross-sectional view of a fourth preferred embodiment of the present invention. In this embodiment, the main structure is the same as the third preferred embodiment described above. Again, the only difference is that a further metal bellows 7' is provided (as in the second preferred embodiment). The structural design of the embodiment can also achieve the various functions described in the above preferred embodiments.

Please refer to FIG. 7, which is a cross-sectional view of a fifth preferred embodiment of the present invention. In the present embodiment, the main structure is the same as that of the first preferred embodiment described above, except that the body 2 is longitudinally attached with an elongated sleeve 24, and the longitudinal opening 23 is located on the elongated sleeve 24. This structural design allows the body 2 to be lengthened at the longitudinal opening 23 as needed. The structural design of the embodiment can also achieve the various functions described in the above preferred embodiments.

Please refer to FIG. 8, which is a cross-sectional view of a sixth preferred embodiment of the present invention. In this embodiment, the main structure is the same as the fifth preferred embodiment described above, except that another metal telescopic bladder 7" is additionally provided (as in the second preferred embodiment). The structural design can also achieve the various efficacies described in the various preferred embodiments described above.

In addition, the above description is only a preferred embodiment of the present invention, and is not intended to limit the present creation. Any modification, equivalent replacement, improvement, etc., which are included in the spirit and principle of the present creation, should be included. Within the scope of this creation.

1‧‧‧Control valve improved structure

2‧‧‧ Ontology

21‧‧‧Horizontal entrance

22‧‧‧lateral exit

23‧‧‧Longitudinal opening

3‧‧‧ Valve plug

4‧‧‧Upper cover

5‧‧‧Metal bellows

6‧‧‧ mandrel

Claims (9)

A control valve improved structure comprising: a body comprising a lateral inlet, a lateral outlet and a longitudinal opening, the lateral inlet, the lateral outlet and the longitudinal opening are in communication with each other; a valve plug is laterally located in the body and Sliding along the longitudinal opening; an upper cover is laterally disposed on the body and correspondingly covering the longitudinal opening; a mandrel is longitudinally located on the body, and one end of the mandrel is coupled to the valve plug, the heart The other end of the shaft is slidably disposed on the upper cover; and a metal bellows is longitudinally located in the body and surrounding the mandrel, and the two ends of the metal bellows are respectively coupled to the valve plug and the upper cover. The improved structure of the control valve according to claim 1, wherein the metal bellows has a corrugated cross section. The control valve improved structure of claim 1, wherein one of the two ends of the metal bellows is welded to one of the valve plug and the upper cover. The control valve improved structure of claim 1, wherein the metal bellows is a stainless steel metal bellows. The control valve improved structure of claim 1, further comprising a further metal bellows, the other metal bellows being longitudinally located within the body and covering the mandrel. The improved structure of the control valve as described in claim 5, wherein the other The section of a metal bellows is corrugated. The control valve improved structure of claim 5, wherein the other metal bellows is a stainless steel metal bellows. The control valve modified structure of claim 1, wherein the body extends longitudinally with an extension, and the longitudinal opening is located on the extension. The control valve improved structure of claim 1, wherein the body is longitudinally attached with an elongated sleeve, and the longitudinal opening is located on the elongated sleeve.