Flange gate valve capable of being installed telescopically

Abstract

The utility model discloses a flange gate valve capable of being installed in a telescopic mode, and relates to the technical field of valves, the flange gate valve comprises a valve body, a telescopic assembly is arranged on the lower portion of the outer side wall of the valve body, the telescopic assembly comprises an outer screw pipe horizontally communicated with the lower portion of the outer side wall of the valve body, and a communicated corrugated pipe is arranged at the end of an inner screw ring in threaded connection with the peripheral side of the outer screw pipe. The end, away from the inner screw ring, of the corrugated pipe is provided with a communicated outer screw ring. A protection assembly is arranged on the peripheral side of the corrugated pipe and comprises a fixed protection shell arranged on the outer side of the inner threaded ring, a baffle ring is arranged at the end, away from the inner threaded ring, of the fixed protection shell, and a movable protection shell arranged in the fixed protection shell is arranged on the outer side of the inner threaded ring. The telescopic assembly is arranged, so that the corrugated pipe is convenient to disassemble and assemble, the corrugated pipe is convenient to replace, and material leakage is reduced; and the protection assembly is arranged, the corrugated pipe is comprehensively protected, the service cycle is prolonged, and the replacement frequency is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and in particular relates to a retractable flange gate valve. Background Technology

[0002] In the development and utilization of liquids, gases, and particulate matter, pipelines are required for transportation, and valves are installed on the pipelines to control whether or not to discharge, and to control the flow rate of liquids, gases, and particulate matter. There are many types of valves on the market, such as shut-off valves, regulating valves, safety valves, and flange gate valves, etc., and different valves have different functions. The main function of flange gate valves is to cut off or connect the flow of media.

[0003] A search revealed a retractable flange gate valve in patent publication number CN218152580U, but it still has the following shortcomings in practical use:

[0004] 1. The retractable flange gate valve disclosed in the patent document with patent publication number CN218152580U has an extension section provided on the side wall of the valve body to realize the retractable installation of the valve body. However, the valve body is fixedly connected to the extension section, which is not convenient for disassembly and assembly, and thus brings inconvenience to the replacement of damaged extension sections.

[0005] 2. The telescopic flange gate valve disclosed in the patent document with patent publication number CN218152580U has an external extension joint on the valve body, which reduces the protective effect of the extension joint, makes the extension joint susceptible to damage from external influences, reduces the service life of the extension joint, and increases the replacement frequency of the extension joint.

[0006] To address these issues, we provide a retractable flange gate valve. Utility Model Content

[0007] The purpose of this utility model is to provide a retractable flange gate valve. By setting a telescopic component, it is convenient to disassemble and replace the damaged bellows. By setting a protective component, the bellows is wrapped and protected, thereby increasing its service life.

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0009] This utility model relates to a retractable flange gate valve, comprising a valve body, a telescopic assembly disposed on the lower part of the outer side wall of the valve body, the telescopic assembly including an external helical tube horizontally connected to the lower part of the outer side wall of the valve body, an internal helical ring threaded to the outer circumference of the external helical tube having a bellows connected to the end of the internal helical ring, the end of the bellows away from the internal helical ring having a connected external helical ring; a protective assembly disposed on the outer circumference of the bellows, the protective assembly including a fixed protective shell disposed outside the internal helical ring, a retaining ring disposed at the end of the fixed protective shell away from the internal helical ring, a movable protective shell disposed inside the fixed protective shell outside the internal helical ring, a connecting ring fixedly connected to the end of the movable protective shell near the internal helical ring, a return spring connected in a ring array on the side of the connecting ring and connected to the side of the retaining ring, and the internal thread of the movable protective shell away from the internal helical ring being threaded to the outer circumference of the external helical ring.

[0010] The present invention is further configured such that the connecting pipe connected to the lower part of the outer side wall of the valve body is away from the external threaded pipe, the end of the connecting pipe away from the valve body has a valve flange that is connected and fixed, the side of the valve flange has a sealing gasket, and the side of the valve flange away from the sealing gasket has a screw connected by an annular array thread.

[0011] The present invention is further configured such that a sealing gasket is provided on the side of the limiting ring sleeved on the outer periphery of the external spiral tube, the internal spiral ring is in contact with the sealing gasket, and the side of the limiting ring is connected to one end of the fixed protective shell.

[0012] The present invention is further configured such that the outer periphery of the movable protective shell has a threaded inner thread tube, one end of which contacts the side of the retaining ring.

[0013] The present invention is further configured such that a positioning ring is sleeved on the inner circumference of the internal spiral tube, and a sealing gasket provided on the side of the positioning ring contacts one end of the movable protective shell.

[0014] The present invention is further configured such that a sealing gasket is provided on the side of the connecting flange sleeved at the other end of the outer periphery of the internal spiral tube, and a screw connected by an annular array thread is provided on the side of the connecting flange away from the sealing gasket.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model uses a telescopic component to detach the inner threaded ring from the outer threaded tube by rotating it clockwise, thus separating the valve body from the bellows; conversely, rotating it clockwise connects the new bellows to the valve body, thus facilitating the disassembly and assembly of the bellows and making it easier to replace damaged bellows.

[0017] 2. This utility model, by setting up a protective component, pulls the connecting flange, compresses the return spring, moves the connecting ring closer to the retaining ring, and extends the bellows. Conversely, when the compressed return spring extends, the bellows contracts, adjusting the distance between the connecting flange and the pipeline, thus achieving the retractable installation of the valve body. Furthermore, the fixed and movable protective shells always enclose the protective bellows, increasing the service life of the bellows and reducing the frequency of bellows replacement. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 A three-dimensional schematic diagram of a retractable flange gate valve;

[0020] Figure 2 This is a schematic diagram showing the connection between the valve body and the telescopic assembly;

[0021] Figure 3 This is a schematic cross-sectional view of the connection between the telescopic component and the protective component.

[0022] Figure 4 This is a schematic diagram showing the connection between the fixed protective shell, the movable protective shell, and the inner threaded tube.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1-Valve body, 101-Connecting pipe, 102-Valve flange, 102a-Screw, 102b-Sealing gasket, 2-Expansion assembly, 201-External threaded pipe, 202-Limiting ring, 203-Bellwall, 203a-External threaded ring, 203b-Internal threaded ring, 3-Protective assembly, 301-Connecting flange, 301a-Internal threaded pipe, 301b-Positioning ring, 302-Fixed housing, 302a-Retaining ring, 303-Modible housing, 303a-Connecting ring, 304-Reset spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Please see Figure 1This utility model is a retractable flange gate valve, including a valve body 1, a connecting pipe 101 and a valve flange 102. The connection pipe 101 and the flange 102 are used for the connection between the valve body 1 and the pipeline.

[0028] Specifically, the lower part of the outer wall of the valve body 1 has a connecting pipe 101, the end of the connecting pipe 101 has a valve flange 102 that is connected and fixed, the side of the valve flange 102 has a sealing gasket 102b, and the other side of the valve flange 102 has a threaded screw 102a.

[0029] Furthermore, screws 102a are arranged in a ring array;

[0030] The operation process of this embodiment is as follows: the sealing gasket 102b on the valve flange 102 is brought into contact with the pipeline, and the screw 102a on the valve flange 102 is rotated counterclockwise to lock the valve flange 102 to the pipeline and connect the valve body 1 to the pipeline; otherwise, the pipeline and the valve body 1 are separated.

[0031] Example 2

[0032] Please see Figure 1 , Figure 2 and Figure 3 Based on the first specific embodiment, a telescopic component 2 is provided. The telescopic component 2 includes an outer helical tube 201, a limiting ring 202, a bellows 203, an outer threaded ring 203a, and an inner threaded ring 203b. By rotating the inner threaded ring 203b, the outer helical tube 201 and the valve body 1 can be disassembled and reassembled, which facilitates the disassembly and replacement of the damaged telescopic component 2.

[0033] Specifically, the external helical tube 201 is horizontally connected and fixed to the lower part of the outer side wall of the valve body 1. The side of the limiting ring 202 sleeved on the outer periphery of the external helical tube 201 has a sealing gasket 102b. One end of the bellows 203 is connected and fixed to the inner threaded ring 203b, which is threadedly connected to the outer periphery of the external helical tube 201, and the inner threaded ring 203b is in contact with the sealing gasket 102b. The other end of the bellows 203 has an external threaded ring 203a that is connected and fixed.

[0034] Furthermore, the dimensions of the outer threaded ring 203a are the same as those of the inner threaded ring 203b;

[0035] The operation process of this embodiment is as follows: Pull the outer threaded ring 203a to extend the bellows 203, and conversely, the extended bellows 203 retracts; rotate the inner threaded ring 203b clockwise to remove the bellows 203 from the outer threaded tube 201, and the bellows 203 is removed; conversely, rotate the inner threaded ring 203b clockwise to connect the new bellows 203 to the valve body 1.

[0036] Example 3

[0037] Please see Figure 1 , Figure 3 and Figure 4 Based on specific embodiments one and two, a protective component 3 is provided. The protective component 3 includes a fixed protective shell 302, a retaining ring 302a, a movable protective shell 303, a connecting ring 303a, and a return spring 304. The cooperation between the fixed protective shell 302 and the movable protective shell 303 wraps and protects the bellows 203, which helps to extend the service life of the bellows 203, reduce the frequency of replacing the bellows 203, and does not affect the expansion and contraction of the bellows 203.

[0038] Specifically, the fixed housing 302 is connected to the side of the limiting ring 202, and the fixed housing 302 has a retaining ring 302a at the end away from the limiting ring 202. The movable housing 303 is located inside the fixed housing 302, and the movable housing 303 has a connecting ring 303a at the end near the limiting ring 202. The reset spring 304 connected to the side of the connecting ring 303a is connected to the side of the retaining ring 302a. The internal threaded tube 301a is threadedly connected to the outer periphery of the movable housing 303, and the internal threaded tube 301a is in contact with the retaining ring 302a. The end of the internal threaded tube 301a away from the retaining ring 302a has a connecting flange 301. One side of the connecting flange 301 has a sealing gasket, and the other side of the connecting flange 301 has a threaded screw 102a.

[0039] Furthermore, the screws 102a on the connecting flange 301 are arranged in a ring array;

[0040] The operation process of this embodiment is as follows: Pull the connecting flange 301, the return spring 304 retracts, the connecting ring 303a moves towards the retaining ring 302a, and the bellows 203 extends; conversely, the bellows 203 retracts until the connecting flange 301 contacts the pipe. Turn the screw 102a counterclockwise to fix the connecting flange 301 to the pipe; otherwise, separate the pipe from the connecting flange 301.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A flange gate valve of telescopic mounting comprising a valve body (1), characterized in that: The outer side wall lower part of the valve body (1) is provided with a telescopic assembly (2), which comprises an outer spiral pipe (201) connected horizontally to the outer side wall lower part of the valve body (1), the outer periphery of the outer spiral pipe (201) is threadedly connected with an inner spiral ring (203b), the end of the inner spiral ring (203b) is connected with a corrugated pipe (203), and the end of the corrugated pipe (203) away from the inner spiral ring (203b) is connected with an outer spiral ring (203a). The outer periphery of the corrugated pipe (203) is provided with a protection assembly (3), which comprises a fixed sheath (302) arranged on the outer side of the inner spiral ring (203b), the end of the fixed sheath (302) away from the inner spiral ring (203b) is provided with a stop ring (302a), and the inner part of the fixed sheath (302) is provided with a movable sheath (303) arranged on the outer side of the inner spiral ring (203b), the end of the movable sheath (303) close to the inner spiral ring (203b) is fixedly connected with a connecting ring (303a), the side surface of the connecting ring (303a) is connected with the side surface of the stop ring (302a) through an annular array of reset springs (304), and the inner part of the movable sheath (303) away from the inner spiral ring (203b) is threadedly connected with the outer periphery of the outer spiral ring (203a).

2. The retractable flange gate valve according to claim 1, characterized in that: The connecting pipe (101) connected to the outer side wall lower part of the valve body (1) is away from the outer spiral pipe (201), the end of the connecting pipe (101) away from the valve body (1) is connected with a valve flange plate (102) in a fixed manner, the side surface of the valve flange plate (102) is provided with a sealing gasket (102b), and the side surface of the valve flange plate (102) away from the sealing gasket (102b) is annularly arrayed and threadedly connected with a screw (102a).

3. A flange valve according to claim 1, characterized in that: The side surface of the limiting ring (202) sleeved on the outer periphery of the outer spiral pipe (201) is provided with a sealing gasket (102b), the inner spiral ring (203b) is in contact with the sealing gasket (102b), and the side surface of the limiting ring (202) is connected with one end of the fixed sheath (302).

4. A retractable flange gate valve according to claim 1, characterized in that: The outer periphery of the movable sheath (303) is threadedly connected with an inner spiral pipe (301a), and one end of the inner spiral pipe (301a) is in contact with the side surface of the stop ring (302a).

5. A flange valve according to claim 4, wherein: The inner periphery of the inner spiral pipe (301a) is sleeved with a positioning ring (301b), and the side surface of the positioning ring (301b) is provided with a sealing gasket (102b) in contact with one end of the movable sheath (303).

6. A flange valve according to claim 4, wherein: The side surface of the connecting flange plate (301) sleeved on the other end of the outer periphery of the inner spiral pipe (301a) is provided with a sealing gasket (102b), and the side surface of the connecting flange plate (301) away from the sealing gasket (102b) is annularly arrayed and threadedly connected with a screw (102a).

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