Corrugated pipe fluorine-lined stop valve for strong corrosive medium

Abstract

The utility model provides a corrugated pipe fluorine-lined stop valve for a strong corrosive medium, which comprises a valve body, a valve cover is fixedly mounted on the valve body, a valve rod is mounted on the valve cover through threads, and a handle is fixedly mounted at the top end of the valve rod; a corrugated pipe is fixedly installed between the valve body and the valve deck, the interior of the corrugated pipe is fixedly connected with the bottom end of the valve rod, and a fluorine lining valve clack is fixedly installed at the bottom end of the corrugated pipe through a bolt. The fluorine lining valve clack is slidably mounted in the valve body; no matter the fluorine-lined valve clack is in an open state or a closed state, the fluorine-lined valve clack is always blocked in the sealing ring cavity, so that a medium is prevented from entering the sealing ring cavity, and the corrugated pipe is prevented from being in contact with the medium; the corrugated pipe can be protected and prevented from being corroded, and the service life of the corrugated pipe is prolonged; meanwhile, when the corrugated pipe is abraded, the sealing performance between the valve rod and the valve body and the sealing performance between the valve rod and the valve cover can still be guaranteed through the arrangement between the fluorine lining valve clack and the sealing ring cavity, and therefore the whole valve is safer and more reliable.

Description

Technical Field

[0001] The utility model belongs to the field of stop valves, and in particular relates to a bellows lined fluorine stop valve for highly corrosive media. Background Art

[0002] The bellows-lined fluorine stop valve for highly corrosive media is a valve designed specifically for handling highly corrosive media. This valve combines the characteristics of bellows stop valves and fluorine-lined stop valves, and has excellent corrosion resistance and sealing performance.

[0003] However, for the existing bellows-lined fluorine-lined stop valve for highly corrosive media, when the fluorine-lined valve disc is in an open state, the bellows will come into contact with the medium. If corrosion or wear occurs accidentally, it will cause leakage, thus posing certain safety hazards.

[0004] Therefore, it is very necessary to invent a bellows lined fluorine stop valve for highly corrosive media. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a bellows-lined fluorine stop valve for highly corrosive media, which adopts the following technical solution: a bellows-lined fluorine stop valve for highly corrosive media, comprising a valve body, wherein: a valve cover is fixedly installed on the valve body, and a valve stem is threadedly installed on the valve cover, and a handle is fixedly installed on the top of the valve stem; a bellows is fixedly installed between the valve body and the valve cover, and the inside of the bellows is fixedly connected to the bottom end of the valve stem, and a fluorine-lined valve disc is fixedly installed on the bottom end of the bellows by bolts; the fluorine-lined valve disc is slidably installed in the valve body;

[0006] Preferably, an inlet is provided at one end of the valve body, and an outlet is provided at the other end of the valve body, and a sealing ring cavity is provided at the connection between the valve body and the valve cover; a partition is provided inside the valve body, and a through hole 1 and a through hole 2 are penetrated through the surface of the partition, and the through hole 1 is below the through hole 2; the through hole 1 and the through hole 2 are connected with the inlet, the outlet and the sealing ring cavity, and the through hole 1 and the through hole 2 are coaxial, and the inner diameter of the through hole 1 is smaller than the inner diameter of the through hole 2; the bellows and the fluorine-lined valve flap are slidably installed in the sealing ring cavity, and the fluorine-lined valve flap is above the through hole 1 and the through hole 2, and the diameter of the fluorine-lined valve flap matches the inner diameter of the sealing ring cavity.

[0007] Preferably, the bottom end of the fluorine-lined valve disc is provided with sealing platform 2 and sealing platform 1 corresponding to through hole 1 and through hole 2, and sealing platform 2 and sealing platform 1 are plugged into the corresponding through hole 1 and through hole 2; the sealing platform 2 is above the sealing platform 1, and the diameter of the sealing platform 2 is larger than the diameter of the sealing platform 1.

[0008] Preferably, the inner wall of the valve body is provided with a fluorine lining matching its shape.

[0009] Preferably, a T-shaped plug is fixedly installed at the bottom end of the bellows, and a threaded hole is opened on the vertical plate of the T-shaped plug; the T-shaped plug is connected to the fluorine-lined valve disc by plugging and unplugging; the threaded hole is fixedly connected to the bolt.

[0010] Preferably, a T-slot is provided through the top surface of the fluorine-lined valve flap, and a countersunk hole is provided on the circumferential surface of the top of the fluorine-lined valve flap, and the countersunk hole is connected to the T-slot; the T-shaped plug block is connected to the T-slot by plugging and unplugging; the bolt is fixedly connected between the countersunk hole and the threaded hole, and the bolt is fixedly installed in the countersunk hole.

[0011] Compared with the prior art, the advantages of the utility model are:

[0012] The overall arrangement of the utility model ensures that no matter the fluorine-lined valve disc is in the open or closed state, the fluorine-lined valve disc will always be sealed in the sealing ring cavity, thereby preventing the medium from entering the sealing ring cavity and avoiding the contact between the bellows and the medium; the bellows can be protected to prevent the bellows from being corroded and the service life of the bellows can be increased; at the same time, when the bellows is worn, the arrangement between the fluorine-lined valve disc and the sealing ring cavity can still ensure the sealing between the valve stem, the valve body and the valve cover, thereby making the whole safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall partial cutaway structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the explosion structure of the bellows and the fluorine-lined valve disc of the utility model.

[0015] Figure 3 It is a partial enlarged structural schematic diagram of point A of the utility model.

[0016] Figure 4 It is a partial enlarged structural schematic diagram of point B of the utility model.

[0017] In the figure:

[0018] Valve body 1, valve cover 2, valve stem 3, handle 4, bellows 5, T-type plug 51, threaded hole 52, fluorine-lined valve disc 6, sealing platform 2 61, sealing platform 1 62, T-type slot 63, countersunk hole 64, inlet 7, outlet 8, sealing ring cavity 9, partition 10, through hole 1 11, through hole 2 12, bolt 13. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0020] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] Embodiment 1

[0023] Reference Figure 1-4 A bellows-lined fluorine stop valve for highly corrosive media includes a valve body 1, wherein: a valve cover 2 is fixedly installed on the valve body 1, and a valve stem 3 is threadedly installed on the valve cover 2, and a handle 4 is fixedly installed on the top of the valve stem 3; a bellows 5 is fixedly installed between the valve body 1 and the valve cover 2, and the inside of the bellows 5 is fixedly connected to the bottom end of the valve stem 3, and a fluorine-lined valve disc 6 is fixedly installed on the bottom end of the bellows 5 through a bolt 13; the fluorine-lined valve disc 6 is slidably installed in the valve body 1;

[0024] An inlet 7 is provided at one end of the valve body 1, and an outlet 8 is provided at the other end of the valve body 1. A sealing ring cavity 9 is provided at the connection between the valve body 1 and the valve cover 2. By setting the sealing ring cavity 9, a part of the fluorine-lined valve disc 6 can always be sealed in the sealing ring cavity 9. In this way, when the fluorine-lined valve disc 6 is impacted by the medium, not only the stability of the fluorine-lined valve disc 6, the bellows 5 and the valve stem 3 can be ensured, but also the sealing performance of the sealing ring cavity 9 can be ensured to prevent the medium from contacting the bellows 5, thereby improving the service life of the bellows 5. At the same time, the pressure formed between the fluorine-lined valve disc 6 and the sealing ring cavity 9 is convenient for The fluorine-lined valve flap 6 is closed at a later stage; a partition 10 is provided inside the valve body 1, and a through hole 11 and a through hole 2 12 are penetrated through the surface of the partition 10, and the through hole 11 is below the through hole 2 12; the through hole 11 and the through hole 2 12 are connected with the inlet 7, the outlet 8 and the sealing ring cavity 9, and the through hole 11 and the through hole 2 12 are coaxial, and the inner diameter of the through hole 11 is smaller than the inner diameter of the through hole 2 12; the bellows 5 and the fluorine-lined valve flap 6 are slidably installed in the sealing ring cavity 9, and the fluorine-lined valve flap 6 is above the through hole 11 and the through hole 2 12, and the diameter of the fluorine-lined valve flap 6 matches the inner diameter of the sealing ring cavity 9.

[0025] The bottom end of the fluorine-lined valve flap 6 is provided with a sealing platform 2 61 and a sealing platform 1 62 corresponding to the through hole 11 and the through hole 2 12, and the sealing platform 2 61 and the sealing platform 1 62 are plugged between the corresponding through hole 11 and the through hole 2 12; the sealing platform 2 61 is above the sealing platform 1 62, and the diameter of the sealing platform 2 61 is larger than the diameter of the sealing platform 1 62; through the arrangement between the sealing platform 2 61 and the sealing platform 1 62 and the through hole 11 and the through hole 2 12, when the fluorine-lined valve flap 6 is in a closed state, the sealing platform 2 61 will be blocked in the through hole 2 12, and the sealing platform 1 62 will be blocked in the through hole 11, so that the blocking area can be increased to achieve a better sealing effect.

[0026] A T-shaped plug block 51 is fixedly installed at the bottom end of the bellows 5, and a threaded hole 52 is provided on the vertical plate of the T-shaped plug block 51; the T-shaped plug block 51 is plug-in connected to the fluorine-lined valve disc 6; the threaded hole 52 is fixedly connected to the bolt 13; a T-shaped slot 63 is provided through the top surface of the fluorine-lined valve disc 6, and a countersunk hole 64 is provided on the circumferential surface of the top of the fluorine-lined valve disc 6, and the countersunk hole 64 is connected to the T-shaped slot 63; the T-shaped plug block 51 is plug-in connected to the T-shaped slot 63; the arrangement of the T-shaped plug block 51 and the T-shaped slot 63 facilitates the connection between the bellows 5 and the fluorine-lined valve disc 6 The positioning connection is performed, and when the bellows 5 and the fluorine-lined valve flap 6 become loose, the fluorine-lined valve flap 6 can still be accurately controlled; the bolt 13 is fixedly connected between the countersunk hole 64 and the threaded hole 52, and the bolt 13 is fixedly installed in the countersunk hole 64. The bolt 13 can be hidden by the setting of the countersunk hole 64, and the setting between the fluorine-lined valve flap 6 and the sealing ring cavity 9 can block the bolt 13 and prevent it from falling off from the countersunk hole 64, thereby making the bellows 5 and the fluorine-lined valve flap 6 safer and more reliable.

[0027] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A bellows-lined fluorine stop valve for highly corrosive media, characterized by: The invention comprises a valve body (1), wherein: a valve cover (2) is fixedly mounted on the valve body (1), and a valve stem (3) is threadedly mounted on the valve cover (2), and a handle (4) is fixedly mounted on the top end of the valve stem (3); a bellows (5) is fixedly mounted between the valve body (1) and the valve cover (2), and the interior of the bellows (5) is fixedly connected to the bottom end of the valve stem (3), and a fluorine-lined valve flap (6) is fixedly mounted on the bottom end of the bellows (5) via a bolt (13); and the fluorine-lined valve flap (6) is slidably mounted in the valve body (1); An inlet (7) is provided at one end of the valve body (1), and an outlet (8) is provided at the other end of the valve body (1); a sealing ring cavity (9) is provided at the connection between the valve body (1) and the valve cover (2); a partition (10) is provided inside the valve body (1), and a through hole (11) and a through hole (12) are provided on the surface of the partition (10), wherein the through hole (11) is below the through hole (12); the through hole (11) and the through hole (12) are connected to the inlet (7), the outlet (8) and the sealing ring cavity (9); the bellows (5) and the fluorine-lined valve flap (6) are slidably mounted in the sealing ring cavity (9), and the fluorine-lined valve flap (6) is above the through hole (11) and the through hole (12).

2. A bellows-lined fluorine stop valve for highly corrosive media as claimed in claim 1, characterized in that: The bottom end of the fluorine-lined valve flap (6) is provided with a second blocking platform (61) and a first blocking platform (62) corresponding to the first through hole (11) and the second through hole (12), and the second blocking platform (61) and the first blocking platform (62) are plugged into the corresponding first through hole (11) and the second through hole (12); the second blocking platform (61) is above the first blocking platform (62).

3. A bellows-lined fluorine stop valve for highly corrosive media as claimed in claim 1, characterized in that: The inner wall of the valve body (1) is provided with a fluorine lining matching its shape.

4. A bellows-lined fluorine stop valve for highly corrosive media as claimed in claim 2, characterized in that: A T-shaped plug block (51) is fixedly mounted on the bottom end of the bellows (5), and a threaded hole (52) is provided on the vertical plate of the T-shaped plug block (51); the T-shaped plug block (51) is plug-in connected to the fluorine-lined valve flap (6); and the threaded hole (52) is fixedly connected to the bolt (13).

5. A bellows-lined fluorine stop valve for highly corrosive media as claimed in claim 4, characterized in that: A T-shaped slot (63) is formed through the top surface of the fluorine-lined valve flap (6), and a countersunk hole (64) is formed on the circumferential surface of the top of the fluorine-lined valve flap (6), the countersunk hole (64) being in communication with the T-shaped slot (63); the T-shaped plug block (51) is connected to the T-shaped slot (63) by plugging and unplugging; the bolt (13) is fixedly connected to the threaded hole (52) through the countersunk hole (64), and the bolt (13) is fixedly installed in the countersunk hole (64).

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