CN221482656U

CN221482656U - Adjusting valve convenient for on-line maintenance

Info

Publication number: CN221482656U
Application number: CN202420205201.4U
Authority: CN
Inventors: 王章章; 张传航; 都志佳; 张成功
Original assignee: Weiming Environmental Protection Equipment Group Co ltd
Current assignee: Weiming Environmental Protection Equipment Group Co ltd
Priority date: 2024-01-29
Filing date: 2024-01-29
Publication date: 2024-08-06
Anticipated expiration: 2034-01-29

Abstract

An adjusting valve convenient for on-line maintenance. Solves the problem of difficult maintenance of the existing regulating valve. The valve comprises a valve body, an upper cover and a valve rod, wherein a medium channel is arranged in the valve body, and the valve further comprises: the valve seat is arranged in the valve body; the valve clack is arranged on the valve rod and is linked with the valve rod, and is provided with a first position which is matched with the valve seat to block the medium channel and a second position which is opened to facilitate medium circulation; the bottom cover is arranged at the bottom of the valve body and shields a maintenance hole at the bottom of the valve body, and the bottom cover is arranged below the valve clack; the pre-tightening piece is arranged on the valve body, abuts against the valve seat and provides pre-pressing force for the valve seat. The valve has the beneficial effects that the bottom cover is arranged, the valve clack and the valve seat can be replaced and maintained by opening from the bottom of the valve body, and the pre-tightening piece is arranged, so that the valve clack can be pre-tightened, the reliable pre-compression force is provided, and the product is sealed reliably.

Description

Adjusting valve convenient for on-line maintenance

Technical Field

The utility model relates to a regulating valve, in particular to a regulating valve convenient for on-line maintenance.

Background

In the field of industrial automation process control, the regulating valve is also called a control valve, and a final control element for changing process parameters such as medium flow, pressure, temperature, liquid level and the like by power operation is realized by receiving a control signal output by a regulating control unit. The regulating valve is generally composed of an actuating mechanism and a valve, and if the regulating valve is characterized by stroke, the regulating valve can be divided into a straight stroke and an angular stroke; the power used by the execution mechanism can be divided into three types of pneumatic regulating valves, electric regulating valves and hydraulic regulating valves; the characteristics are classified into linear characteristics, equal percentage characteristics and parabolic characteristics according to functions and characteristics. The regulating valve is suitable for air, water, steam, various corrosive media, slurry, oil products and other media. Existing regulating valves generally cover a valve body, a valve rod, a valve clack, a valve seat and a valve cover, wherein the valve rod penetrates through the valve rod to be inserted into the valve body and connected with the valve clack, and various control elements and/or driving elements can be arranged on the valve cover. The existing regulating valve is provided with an initial seal of a debugging sealing gasket by adjusting the bolt force of a valve cover, so that the valve cover is difficult to disassemble and assemble and is troublesome to debug; in addition, in long-term use, the valve clack and the valve seat are easy to have sealing leakage, so that the sealing of a product is unreliable, the valve cover is usually opened in the prior art, the valve cover and the valve clack are pulled out from the valve cover, and the valve clack or the valve seat is overhauled.

Disclosure of utility model

In order to solve the problem of difficult maintenance of the existing regulating valve in the background technology, the utility model provides the regulating valve convenient for on-line maintenance.

The technical scheme of the utility model is as follows: the utility model provides a convenient on-line maintenance's governing valve, includes valve body, upper cover and valve rod, the valve body in be equipped with the medium passageway, still include:

The valve seat is arranged in the valve body;

The valve clack is arranged on the valve rod and is linked with the valve rod, and is provided with a first position which is matched with the valve seat to block the medium channel and a second position which is opened to facilitate medium circulation;

The bottom cover is arranged at the bottom of the valve body and shields a maintenance hole at the bottom of the valve body, and the bottom cover is arranged below the valve clack;

The pre-tightening piece is arranged on the valve body, abuts against the valve seat and provides pre-pressing force for the valve seat.

As a further improvement of the utility model, the bottom cover is provided with a shielding part and a flange part, the shielding part is inserted into the maintenance hole of the valve body, the flange part is arranged at the outer side of the valve body and is used for being connected with the valve body, and a first sealing element is arranged between the flange part and the valve body.

As a further improvement of the utility model, the pre-tightening piece is arranged on the valve body above the bottom cover and abuts against the valve seat.

As a further development of the utility model, the utility model also comprises a second seal, by means of which the pretension piece is pressed against the valve seat.

As a further improvement of the utility model, the pre-tightening piece is in threaded connection with the valve body, and the pre-tightening piece is a bolt.

As a further improvement of the utility model, the aperture of the maintenance hole is larger than the outer diameter of the valve clack, and the maintenance hole is arranged right below the valve clack.

As a further improvement of the present utility model, the present utility model further includes:

The upper sleeve is arranged in the medium channel and abuts against the upper cover;

the lower sleeve is arranged in the valve body, one end of the lower sleeve is propped against the upper sleeve, and the other end of the lower sleeve is propped against the valve seat; the valve clack is arranged at the first position and is used for shielding the flow hole;

and the third sealing piece is arranged between the upper sleeve and the lower sleeve.

As a further improvement of the utility model, the valve seat protrudes upwards to form a first protruding block part, the first protruding block part is matched with the lower sleeve, the valve seat protrudes downwards to form a second protruding block part, and the second protruding block part is arranged on the inner side of the pre-tightening piece.

As a further improvement of the utility model, the valve clack, the upper cover and the upper sleeve are mutually matched to form a containing cavity, and the containing cavity is connected with the medium channel.

As a further improvement of the utility model, the valve clack is provided with a communication hole, and the medium channel is communicated with the accommodating cavity through the communication hole.

The valve has the beneficial effects that the bottom cover is arranged, the valve clack and the valve seat can be replaced and maintained by opening from the bottom of the valve body, and the pre-tightening piece is arranged, so that the valve clack can be pre-tightened, the reliable pre-compression force is provided, and the product is sealed reliably. The utility model also has the advantages of simple structure, convenient assembly, trouble, reliability, long service life and the like.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

Fig. 2 is a schematic view of the structure of the valve body according to the embodiment of the present utility model.

In the figure, 1, a valve body; 11. a media channel; 12. a maintenance hole; 13. a receiving chamber; 2. an upper cover; 3. a valve stem; 4. a valve seat; 41. a first bump portion; 42. a second bump portion; 5. a valve flap; 51. a communication hole; 6. a bottom cover; 61. a shielding part; 62. a flange portion; 63. a first seal; 7. a pretension member; 71. a second seal; 81. an upper sleeve; 82. a lower sleeve; 821. a flow hole; 83. and a third seal.

Detailed Description

Embodiments of the utility model are further described below with reference to the accompanying drawings:

the utility model provides a convenient on-line maintenance's governing valve, is shown by fig. 1 in combination with fig. 2, includes valve body 1, upper cover 2 and valve rod 3, valve body 1 in be equipped with medium passageway 11, still include:

a valve seat 4 provided in the valve body 1;

the valve clack 5 is arranged on the valve rod 3 and is linked with the valve rod 3, and is provided with a first position for mutually matching with the valve seat 4 to block the medium channel 11 and a second position for opening and facilitating medium circulation;

The bottom cover 6 is arranged at the bottom of the valve body 1 and shields a maintenance hole 12 at the bottom of the valve body 1, and the bottom cover 6 is arranged below the valve clack 5;

A pretension member 7 provided on the valve body 1, abutting against the valve seat 4 and providing a pretension of the valve seat 4. The valve has the beneficial effects that the bottom cover is arranged, the valve clack and the valve seat can be replaced and maintained by opening from the bottom of the valve body, and the pre-tightening piece is arranged, so that the valve clack can be pre-tightened, the reliable pre-compression force is provided, and the product is sealed reliably. The utility model also has the advantages of simple structure, convenient assembly, trouble, reliability, long service life and the like. Specifically, the valve can be accessed from the bottom cover during maintenance or installation, the initial sealing force of the seal (such as the seal between the upper sleeve and the lower sleeve and the seal at the valve seat) in the valve body is adjusted through the pre-tightening piece, the valve is closed through factory experiments, and the valve can be screwed down through the pre-tightening piece if leakage exists through the medium entering from the outlet end; and then, online maintenance is performed, when the leakage phenomenon exists on the site, the bottom cover can be opened to pre-tighten the pre-tightening piece until the leakage reaches the standard; if the pre-tightening piece is not screwed, only the sealing piece can be replaced, and at the moment, the parts can be directly taken out from the bottom cover, so that the valve is convenient to use and the whole valve is not required to be detached.

The bottom cover 6 is provided with a shielding part 61 and a flange part 62, the shielding part 61 is inserted into the maintenance hole 12 of the valve body 1, the flange part 62 is arranged on the outer side of the valve body 1 and is used for being connected with the valve body 1, and a first sealing member 63 is arranged between the flange part 62 and the valve body 1. The structure ensures that the bottom cover is sealed simply and reliably, and is convenient for disassembly and assembly.

The pre-tightening piece 7 is arranged on the valve body 1 above the bottom cover 6 and abuts against the valve seat 4. This facilitates a quick operation of the pretension, in particular also the second seal 71, said pretension 7 being pressed against the valve seat 4 by means of the second seal 71. More specifically, the pre-tightening piece 7 is in threaded connection with the valve body 1, and the pre-tightening piece 7 is a bolt. The sealing properties of the product can be adjusted by the pretension.

The aperture of the maintenance hole 12 is larger than the outer diameter of the valve clack 5, and the maintenance hole 12 is arranged right below the valve clack 5. Such a configuration facilitates removal and replacement of components in the event of a seal failure.

The utility model also includes:

An upper sleeve 81 provided in the medium passage 11 and abutting against the upper cover 2;

A lower sleeve 82 provided in the valve body 1, wherein one end of the lower sleeve 82 abuts against the upper sleeve 81, and the other end abuts against the valve seat 4; the lower sleeve 82 is provided with a flow hole 821, and the valve clack 5 shields the flow hole 821 when being positioned at the first position;

A third seal 83 is provided between the upper sleeve 81 and the lower sleeve 82. The sleeve can play a role in guiding the valve clack, so that impact force is reduced, and meanwhile, the valve seat can be positioned, and displacement of the valve seat is avoided. The valve flap also blocks the medium passage when blocking the flow opening, so that the product is sealed reliably.

The valve seat 4 protrudes upwards to form a first protruding block portion 41, the first protruding block portion 41 is matched with the lower sleeve 82, the valve seat 4 protrudes downwards to form a second protruding block portion 42, and the second protruding block portion 42 is arranged on the inner side of the pre-tightening piece 7. The structure ensures that the valve seat is fixed and reliable, avoids displacement and is convenient for mounting the valve seat.

The valve clack 5, the upper cover 2 and the upper sleeve 81 are mutually matched to form a containing cavity 13, and the containing cavity 13 is connected with the medium channel 11. Specifically, the valve clack 5 is provided with a communication hole 51, and the medium channel 11 is communicated with the accommodating cavity 13 through the communication hole 51. Therefore, the torque of the regulating valve is small, the valve clack is provided with the through hole, and after the pressure on the upper surface of the valve clack and the pressure on the lower surface of the valve clack are balanced, the opening force is small, so that the product is simple to operate.

In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

The skilled person will know: while the utility model has been described in terms of the foregoing embodiments, the inventive concepts are not limited to the utility model, and any modifications that use the inventive concepts are intended to be within the scope of the appended claims.

Claims

1. The utility model provides a convenient on-line maintenance's governing valve, includes valve body (1), upper cover (2) and valve rod (3), valve body (1) in be equipped with medium passageway (11), its characterized in that still includes:

the valve seat (4) is arranged in the valve body (1);

The valve clack (5) is arranged on the valve rod (3) and is linked with the valve rod (3) and is provided with a first position which is matched with the valve seat (4) to separate the medium channel (11) and a second position which is opened to facilitate medium circulation;

The bottom cover (6) is arranged at the bottom of the valve body (1) and shields a maintenance hole (12) at the bottom of the valve body (1), and the bottom cover (6) is arranged below the valve clack (5);

And the pre-tightening piece (7) is arranged on the valve body (1), is propped against the valve seat (4) and provides pre-compression for the valve seat (4).

2. The regulating valve convenient for on-line maintenance according to claim 1, characterized in that the bottom cover (6) is provided with a shielding part (61) and a flange part (62), the shielding part (61) is inserted into a maintenance hole (12) of the valve body (1), the flange part (62) is arranged at the outer side of the valve body (1) and is used for being connected with the valve body (1), and a first sealing element (63) is arranged between the flange part (62) and the valve body (1).

3. The regulating valve convenient for on-line maintenance according to claim 1, wherein the pre-tightening piece (7) is arranged on the valve body (1) above the bottom cover (6) and is abutted against the valve seat (4).

4. An on-line maintenance-friendly regulating valve according to claim 1, further comprising a second seal (71), wherein the pretension (7) is arranged against the valve seat (4) by means of the second seal (71).

5. The regulating valve convenient for on-line maintenance according to claim 1, wherein the pre-tightening piece (7) is in threaded connection with the valve body (1), and the pre-tightening piece (7) is a bolt.

6. The regulating valve convenient for on-line maintenance according to claim 1, wherein the hole diameter of the maintenance hole (12) is larger than the outer diameter of the valve clack (5), and the maintenance hole (12) is arranged under the valve clack (5).

7. The regulator valve for facilitating on-line maintenance according to claim 1, further comprising:

An upper sleeve (81) arranged in the medium channel (11) and propped against the upper cover (2);

A lower sleeve (82) arranged in the valve body (1), wherein one end of the lower sleeve (82) is propped against the upper sleeve (81), and the other end is propped against the valve seat (4); the lower sleeve (82) is provided with a flow hole (821), and the valve clack (5) shields the flow hole (821) when being positioned at the first position

And a third seal (83) provided between the upper sleeve (81) and the lower sleeve (82).

8. The regulating valve convenient for on-line maintenance according to claim 7, wherein the valve seat (4) protrudes upwards to form a first protruding block portion (41), the first protruding block portion (41) is matched with the lower sleeve (82), the valve seat (4) protrudes downwards to form a second protruding block portion (42), and the second protruding block portion (42) is arranged on the inner side of the pre-tightening piece (7).

9. The regulating valve convenient for on-line maintenance according to claim 7, wherein the valve clack (5), the upper cover (2) and the upper sleeve (81) are mutually matched to form a containing cavity (13), and the containing cavity (13) is connected with the medium channel (11).

10. The regulating valve convenient for on-line maintenance according to claim 9, characterized in that the valve clack (5) is provided with a communication hole (51), and the medium channel (11) is communicated with the accommodating cavity (13) through the communication hole (51).