Fluorine lining check valve with double-off and double-off functions

Abstract

The utility model discloses a fluorine-lined check valve with double-closing and double-breaking functions, and relates to the field of fluorine-lined check valves. The device comprises a fluorine-lined check valve main body, connecting pipes arranged at the two ends of the fluorine-lined check valve main body, a first valve plate arranged in the fluorine-lined check valve main body and a second valve plate arranged in a group of connecting pipes. According to the fluorine-lined check valve with the double-closing and double-stopping functions, the filtering mechanism is arranged on the bottom end face of one set of valve plates, and before a medium in one set of pipelines enters the other set of pipelines through control of the fluorine-lined check valve body, the filtering mechanism can filter impurities attached to the medium; the situations that impurities in different pipelines are mixed and the like are avoided, and meanwhile the situation that the interiors of the fluorine-lined check valve and the pipelines connected with the fluorine-lined check valve are blocked is also avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fluorine-lined check valves, in particular to a fluorine-lined check valve with double-closing and double-breaking functions. Background Art

[0002] A fluorine-lined check valve is arranged between two groups of conveying pipes, and two groups of valve plates and valve seats are arranged inside the fluorine-lined check valve, so that the connection or disconnection between the two groups of conveying pipes can be controlled by the opening and closing state between the valve plate and the valve seat, and the fluorine-lined check valve with double-off and double-off functions can facilitate the staff to inspect and repair the inside of the fluorine-lined check valve.

[0003] However, after long-term use, the fluorine-lined check valve and the inside of the delivery pipe connected to the fluorine-lined check valve are prone to blockage.

[0004] The main reason for the above problems is that there is no device for impurity filtering inside the fluorine-lined check valve, so when the medium inside a group of conveying pipes enters the inside of another group of pipes through the fluorine-lined check valve, when the medium is discharged sewage, the impurities carried in the medium will pass through the conveying pipes and the fluorine-lined check valve, and the interior of the fluorine-lined check valve is in a bent state, so that some impurities will accumulate inside the fluorine-lined check valve, resulting in the interior of the fluorine-lined check valve being blocked by impurities, affecting the normal use of the fluorine-lined check valve. To address the above problems, we propose a fluorine-lined check valve with double-off and double-off functions. Summary of the invention

[0005] In view of the deficiencies in the prior art, the utility model provides a fluorine-lined check valve with double-off and double-off functions, which solves the problem that the fluorine-lined check valve and the conveying pipe connected to the fluorine-lined check valve are prone to blockage after long-term use.

[0006] To achieve the above purpose, the utility model is implemented by the following technical scheme: a fluorine-lined check valve with double-off and double-off functions, comprising a fluorine-lined check valve body, connecting pipes arranged at both ends of the fluorine-lined check valve body, a first valve plate arranged inside the fluorine-lined check valve body, and a second valve plate arranged inside a group of connecting pipes, wherein a filtering mechanism is arranged on the bottom end surface of the first valve plate, and the filtering mechanism comprises:

[0007] A first net cylinder connected to the bottom end surface of the first valve plate;

[0008] The second net cylinder is arranged inside the first net cylinder, and the medium flowing into the fluorine-lined check valve body and the connecting pipe is filtered through the combined first net cylinder and the second net cylinder.

[0009] Preferably, a locking screw for connecting and locking the second net cylinder with the first net cylinder is rotatably connected to the top end surface of the second net cylinder.

[0010] Preferably, the inner wall of the first net cylinder is fixedly connected with a support seat, and one end of the locking screw is threadedly inserted into the interior of the support seat.

[0011] Preferably, a threaded rod is fixedly connected to the top end surface of the second mesh cylinder for fixedly connecting the second mesh cylinder and the first valve plate.

[0012] Preferably, a thread groove for threaded insertion of a threaded rod is formed on the bottom end surface of the first valve plate.

[0013] Preferably, a valve cover is provided on the top end face of the fluorine-lined check valve body, an electric telescopic rod for controlling the up and down movement of the first valve plate is provided on the bottom end face of the valve cover, and a first valve seat adapted to the first valve plate is provided on the inner wall of the fluorine-lined check valve body.

[0014] Preferably, the inner wall of a group of the connecting pipes is provided with a second valve seat matched with the second valve plate.

[0015] The utility model discloses a fluorine-lined check valve with a double-off and double-off function, which has the following beneficial effects: the fluorine-lined check valve with a double-off and double-off function is provided with a filtering mechanism on the bottom end surface of a group of valve plates. Before the medium inside a group of pipes enters another group of pipes through the control of the fluorine-lined check valve body, the filtering mechanism can filter the impurities attached to the medium to avoid mixing of impurities inside different pipes, and also avoid blockage inside the fluorine-lined check valve and the pipe connected to the fluorine-lined check valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a cross-sectional view of the internal structure of the main body of the fluorine-lined check valve of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first valve plate and the first net cylinder of the utility model;

[0019] Figure 4 This is an exploded view of the first valve plate and the first net cylinder structure of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the first net cylinder and the second net cylinder of the utility model.

[0021] In the figure: 1. fluorine-lined check valve body; 101. connecting pipe; 102. valve cover; 2. first valve seat; 201. first valve plate; 202. electric telescopic rod; 3. second valve seat; 301. second valve plate; 4. filtering mechanism; 401. first mesh cylinder; 402. second mesh cylinder; 403. threaded rod; 404. threaded groove; 405. locking screw; 406. support seat. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Please refer to the application embodiment, by providing a fluorine-lined check valve with double-off and double-off functions, centralized filtration and collection of impurities inside the fluorine-lined check valve is achieved.

[0024] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] The utility model embodiment discloses a fluorine-lined check valve with double-off and double-off functions.

[0026] According to the attached Figure 1-5 As shown, it includes a fluorine-lined check valve body 1, connecting pipes 101 arranged at both ends of the fluorine-lined check valve body 1, a first valve plate 201 arranged inside the fluorine-lined check valve body 1, and a second valve plate 301 arranged inside a group of connecting pipes 101. The fluorine-lined check valve body 1, the connecting pipe 101, the valve plate and other components constitute a fluorine-lined check valve with a model number of H41F46-16C. When in use, the two groups of connecting pipes 101 are respectively connected to the two groups of delivery pipes, and then the double-off and double-off functions of the fluorine-lined check valve are realized by manipulating the switching states of the first valve plate 201 and the second valve plate 301. The first valve plate 201 and the second valve plate 301 are both one-way valves. Under normal circumstances, the two one-way valves are closed and isolated from each other, and the medium inside the middle cavity is isolated, which plays a role of double sealing.

[0027] For example, when it is necessary to quickly cut off and quickly empty the medium inside the pipeline, first open one of the one-way valves to allow the medium in the pipeline to be emptied through the fluorine-lined check valve body 1, then close the one-way valve, and then open the other one-way valve to allow the medium to enter the fluorine-lined check valve body 1 from the other side of the pipeline. At this time, the pipeline transportation condition can be inspected and maintained.

[0028] A valve cover 102 is provided on the top end face of the fluorine-lined check valve body 1, and an electric telescopic rod 202 for controlling the up and down movement of the first valve plate 201 is provided on the bottom end face of the valve cover 102. A first valve seat 2 adapted to the first valve plate 201 is provided on the inner wall of the fluorine-lined check valve body 1, and a second valve seat 3 adapted to the second valve plate 301 is provided on the inner wall of a group of connecting pipes 101.

[0029] A filtering mechanism 4 is provided on the bottom end face of the first valve plate 201. Before the medium inside one group of pipes enters another group of pipes through the control of the fluorine-lined check valve body 1, the filtering mechanism 4 can filter the impurities attached to the medium to avoid the mixing of impurities inside different pipes. The filtering mechanism 4 includes a first mesh tube 401, which is connected to the bottom end face of the first valve plate 201, and a second mesh tube 402 is provided inside the first mesh tube 401. The medium flowing into the fluorine-lined check valve body 1 and the connecting pipe 101 is filtered by the combined first mesh tube 401 and the second mesh tube 402. The aperture of the holes opened on the outer wall of the first mesh tube 401 is larger than the aperture of the holes opened on the outer wall of the second mesh tube 402, so that some impurities can be collected between the first mesh tube 401 and the second mesh tube 402, so that the impurities can be cleaned up later.

[0030] The top end surface of the second net cylinder 402 is rotatably connected to a locking screw 405 for connecting and locking the second net cylinder 402 and the first net cylinder 401, the inner wall of the first net cylinder 401 is fixedly connected to a support seat 406, one end of the locking screw 405 is threadedly inserted into the interior of the support seat 406, the top end surface of the second net cylinder 402 is fixedly connected to a threaded rod 403 for fixed connection between the second net cylinder 402 and the first valve plate 201, and the bottom end surface of the first valve plate 201 is provided with a threaded groove 404 for threaded insertion of the threaded rod 403.

[0031] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0032] The fluorine-lined check valve with double-off and double-off functions has a filtering mechanism 4 arranged on the bottom end surface of a group of valve plates. Before the medium inside a group of pipes enters another group of pipes through the control of the fluorine-lined check valve body 1, the filtering mechanism 4 can filter the impurities attached to the medium to avoid mixing of impurities inside different pipes, and also avoid blockage inside the fluorine-lined check valve and the pipes connected to the fluorine-lined check valve.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A fluorine-lined check valve with double-off and double-off functions, comprising a fluorine-lined check valve body (1), connecting pipes (101) arranged at both ends of the fluorine-lined check valve body (1), a first valve plate (201) arranged inside the fluorine-lined check valve body (1), and a second valve plate (301) arranged inside a set of connecting pipes (101), characterized in that: The bottom end surface of the first valve plate (201) is provided with a filtering mechanism (4), and the filtering mechanism (4) comprises: A first net cylinder (401) connected to the bottom end surface of the first valve plate (201); The second net cylinder (402) is arranged inside the first net cylinder (401) and filters the medium flowing into the fluorine-lined check valve body (1) and the connecting pipe (101) through the combined first net cylinder (401) and the second net cylinder (402).

2. The fluorine-lined check valve with double-off and double-off functions according to claim 1 is characterized in that: The top end surface of the second net cylinder (402) is rotatably connected to a locking screw (405) for connecting and locking the second net cylinder (402) and the first net cylinder (401).

3. The fluorine-lined check valve with double-off and double-off functions according to claim 2 is characterized in that: The inner wall of the first net cylinder (401) is fixedly connected to a support seat (406), and one end of the locking screw (405) is threadedly inserted into the interior of the support seat (406).

4. The fluorine-lined check valve with double-off and double-off functions according to claim 3 is characterized in that: A threaded rod (403) is fixedly connected to the top end surface of the second net cylinder (402) and is used for fixed connection between the second net cylinder (402) and the first valve plate (201).

5. The fluorine-lined check valve with double-off and double-off functions according to claim 4 is characterized in that: The bottom end surface of the first valve plate (201) is provided with a thread groove (404) for threaded insertion of the threaded rod (403).

6. The fluorine-lined check valve with double-off and double-off functions according to claim 1 is characterized in that: The top end surface of the fluorine-lined check valve body (1) is provided with a valve cover (102), the bottom end surface of the valve cover (102) is provided with an electric telescopic rod (202) for controlling the up and down movement of the first valve plate (201), and the inner wall of the fluorine-lined check valve body (1) is provided with a first valve seat (2) adapted to the first valve plate (201).

7. The fluorine-lined check valve with double-off and double-off functions according to claim 1 is characterized in that: The inner wall of a group of the connecting pipes (101) is provided with a second valve seat (3) adapted to the second valve plate (301).

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