Valve for chemical pipeline

Abstract

The utility model discloses a valve for a chemical pipeline, which belongs to the technical field of valves and comprises a valve body, and a valve core is rotatably mounted in an inner cavity of the valve body. The feeding pipe and the discharging pipe are connected with the chemical pipeline, the valve element can be rotated through the driving assembly, the first channel or the second channel on the surface of the valve element is made to be communicated with the feeding pipe and the discharging pipe, and therefore the passage of the chemical pipeline is achieved; the valve element can be rotated through the driving assembly so that the first channel and the second channel can be in a staggered state with the feeding pipe and the discharging pipe, and then the chemical pipeline can be closed. And when the filter screens need to be cleaned, the filter screens in the first channel and the second channel can be backwashed and cleaned through the cleaning pipes in a staggered manner, and the chemical pipeline does not need to be shut down to disassemble and clean the valve.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve for chemical pipelines. Background Art

[0002] Valves need to be installed on the pipelines of chemical equipment. There will be certain impurities in the liquid flowing through the chemical pipeline. During long-term use, if the impurities carried by the liquid in the pipeline are not filtered, the impurities will adhere to the pipe wall. However, most of the valves used in existing chemical pipelines do not have filtering functions.

[0003] For example, a Chinese patent with the publication (publication) number CN217842755U discloses a chemical pipeline valve, including a valve connecting cylinder body and a fixed plate. The inner surface of the valve connecting cylinder body is provided with a rotating device, the side surface of the rotating device is provided with a circular hole, the inner surface of the valve connecting cylinder body is fixedly connected with a fixing ring, and the side surface of the fixing ring is rotatably connected with a baffle. This utility model, by designing an integral rotating device, avoids the device from contacting with chemical materials during the rotating connecting shaft, avoids corrosion and causes leakage, and by designing a baffle, a horizontal movable rod and a spring, realizes that the valve is closed and liquids at both ends are prevented from impacting the valve and causing leakage. By designing a baffle, a horizontal movable rod and a spring, it is avoided that the main valve needs to be closed during the replacement of the rotating device. The two ends of the valve connecting cylinder body are self-locking under the pressure of the pipeline, and the replacement is convenient.

[0004] The chemical pipeline valve involved in the above patent does not have a filtering function. Impurities carried by the liquid in the chemical pipeline will adhere to the inner wall of the pipeline if not filtered for a long time, which is difficult to clean. Therefore, we need to propose a valve for chemical pipelines. Utility Model Content

[0005] The purpose of the utility model is to provide a valve for a chemical pipeline, which has the advantage of being able to filter the liquid flowing through the chemical pipeline, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a valve for a chemical pipeline, including a valve body, a valve core is rotatably installed in the inner cavity of the valve body, a feed pipe and a discharge pipe are respectively arranged on both sides of the valve body, a first channel and a second channel are opened inside the valve core, the inner cavities of the first channel and the second channel are both installed with filter screens, a rotating valve core is installed on the top of the valve body to make the first channel or the second channel correspond to the feed pipe and the discharge pipe. A driving component, and cleaning pipes arranged in a vertical direction to the feed pipe and the discharge pipe are arranged on both sides of the valve body.

[0007] Preferably, the drive assembly includes a fixed tube fixedly installed on the top of the valve body, a handle is rotatably installed on the top of the fixed tube, the bottom end of the handle passes through the fixed tube and the valve body in sequence and extends to the inner cavity of the valve body to be fixed on the top of the valve core, and a positioning assembly for locking and positioning the handle is also installed on one side of the fixed tube.

[0008] Preferably, the positioning assembly includes a positioning tube fixedly installed on one side of the fixing tube, one end of the positioning tube is threadedly connected to a positioning rod, one end of the positioning rod passes through the positioning tube and the fixing tube in sequence and extends to the inner cavity of the fixing tube to fit the surface of the handle.

[0009] Preferably, one end of the feed pipe and the discharge pipe is fixedly mounted with a connecting flange, and a connecting hole is opened on the surface of the connecting flange.

[0010] Preferably, the valve body is spherically arranged, the valve core and the valve body are spherically arranged to match each other, and the surface of the valve core fits against the inner wall of the valve body.

[0011] Preferably, the first channel and the second channel are arranged in a vertical direction, and the intersection of the second channel and the first channel is convex upward and arranged in a curved shape.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, the feed pipe and the discharge pipe are connected to the chemical pipeline, and the valve core can be rotated by the driving component so that the first channel or the second channel on the surface of the valve core is connected to the feed pipe and the discharge pipe, thereby realizing the chemical pipeline passage. When the chemical pipeline needs to be closed, the valve core can be rotated by the driving component so that the first channel and the second channel are in a misaligned state with the feed pipe and the discharge pipe, and the chemical pipeline can be closed. In this device, the inner cavities of the first channel and the second channel are both equipped with filter screens, which can filter the medium flowing through the chemical pipeline. When the filter screen needs to be cleaned, the filter screens inside the first channel and the second channel can be backwashed and cleaned through the cleaning pipe in an alternating manner, without shutting down the chemical pipeline to disassemble and clean the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the drive assembly of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure inside the valve body of the utility model;

[0017] Figure 4 This is a structural schematic diagram of the valve core of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the second channel of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the first channel of the utility model.

[0020] In the figure: 1. valve body; 2. valve core; 3. feed pipe; 4. discharge pipe; 5. first channel; 6. second channel; 7. filter screen; 8. cleaning pipe; 9. fixing pipe; 10. handle; 11. positioning pipe; 12. positioning rod; 13. connecting flange; 14. connecting hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 6 The utility model provides a valve for a chemical pipeline, comprising a valve body 1, a valve core 2 is rotatably installed in the inner cavity of the valve body 1, the valve body is spherically arranged, the valve core 2 and the valve body are spherically arranged to match, and the surface of the valve core 2 is in contact with the inner wall of the valve body, a feed pipe 3 and a discharge pipe 4 are respectively arranged on both sides of the valve body, one end of the feed pipe 3 and the discharge pipe 4 are fixedly installed with a connecting flange 13, a connecting hole 14 is provided on the surface of the connecting flange 13, a first channel 5 and a second channel 6 are provided inside the valve core 2, a driving assembly for rotating the valve core so that the first channel 5 or the second channel 6 corresponds to the feed pipe 3 and the discharge pipe 4 is installed on the top of the valve body 1, the driving assembly comprises a fixed pipe 9 fixedly installed on the top of the valve body 1, a handle 10 is rotatably installed on the top of the fixed pipe 9, and the bottom end of the handle 10 sequentially penetrates the fixed pipe 9 and the valve body 1 and extends to the top of the inner cavity of the valve body 1 to fix the valve core 2.

[0023] In this embodiment, a connecting flange 13 is installed at one end of the feed pipe 3 and the discharge pipe 4. Through the use of the connecting flange 13 and the connecting hole 14, it can be connected to the chemical pipeline through a bolt flange installation. When the chemical pipeline is closed, the first channel 5 and the second channel 6 on the surface of the valve core 2 are in a misaligned state with the feed pipe 3 and the discharge pipe 4. At this time, the valve core 2 can block the feed pipe 3 and the discharge pipe 4, so that the medium in the chemical pipeline cannot flow through the valve body 1. When it is necessary to make the chemical pipeline pass, the user can rotate the valve core 2 through the drive component so that the first channel 5 or the second channel 6 on the surface of the valve core 2 is connected to the feed pipe 3 and the discharge pipe 4, so that the medium in the chemical pipeline can flow. In this embodiment, when rotating the valve core 2, the user can directly rotate the handle 10 to rotate the valve core 2.

[0024] Preferably, a positioning assembly for locking and positioning the handle 10 is also installed on one side of the fixed tube 9, and the positioning assembly includes a positioning tube 11 fixedly installed on one side of the fixed tube 9, and one end of the positioning tube 11 is threadedly connected to a positioning rod 12, and one end of the positioning rod 12 penetrates the positioning tube 11 and the fixed tube 9 in sequence and extends to the inner cavity of the fixed tube 9 and fits with the surface of the handle 10. After the valve core 2 is rotated and adjusted for its use angle, the user can tighten the positioning rod 12. The rotation of the positioning rod 12 will cause one end of the positioning rod 12 to penetrate the positioning tube 11 and the fixed tube 9 in sequence and extend to the inner cavity of the fixed tube 9 and fit with the surface of the handle 10, thereby locking and fixing the handle 10 to prevent the valve core 2 from rotating after adjustment.

[0025] Among them, the inner cavities of the first channel 5 and the second channel 6 are both installed with filter screens 7. In this embodiment, filter screens 7 are both installed in the inner cavities of the first channel 5 and the second channel 6, and the medium flowing through the first channel 5 or the second channel 6 can be filtered to prevent impurities in the medium from adhering to the inner wall of the chemical pipeline after long-term sedimentation and being difficult to clean.

[0026] It is worth noting that the first channel 5 and the second channel 6 are arranged in a vertical direction, and the intersection of the second channel 6 and the first channel 5 is convex upward and curved, and cleaning pipes 8 arranged in a vertical direction to the feed pipe 3 and the discharge pipe 4 are provided on both sides of the valve body 1.

[0027] In this embodiment, a first channel 5 and a second channel 6 are provided on the valve core 2 for the circulation of chemical pipeline media. The first channel 5 and the second channel 6 can be used alternately. When the filter screen 7 needs to be cleaned, the user can backwash and clean the filter screen 7 inside the unused channel through the cleaning pipe 8. After one group of filter screens 7 is cleaned, the user can rotate the valve core 2 to clean the other group of filter screens 7. Through the dual-channel setting, the purpose of cleaning the valve without disassembly can be achieved.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve for a chemical pipeline, comprising a valve body (1), characterized in that: A valve core (2) is rotatably mounted in the inner cavity of the valve body (1), a feed pipe (3) and a discharge pipe (4) are respectively arranged on both sides of the valve body (1), a first channel (5) and a second channel (6) are opened inside the valve core (2), and a filter screen (7) is installed in the inner cavity of the first channel (5) and the second channel (6), a driving assembly for rotating the valve core so that the first channel (5) or the second channel (6) corresponds to the feed pipe (3) and the discharge pipe (4), and a cleaning pipe (8) is arranged in a vertical direction with respect to the feed pipe (3) and the discharge pipe (4) on both sides of the valve body (1).

2. A valve for chemical pipeline according to claim 1, characterized in that: The drive assembly comprises a fixed tube (9) fixedly mounted on the top of the valve body (1), a handle (10) being rotatably mounted on the top of the fixed tube (9), the bottom end of the handle (10) passing through the fixed tube (9) and the valve body (1) in sequence and extending to the top of the inner cavity of the valve body (1) to fix the valve core (2) thereto, and a positioning assembly for locking and positioning the handle (10) is also mounted on one side of the fixed tube (9).

3. A valve for chemical pipeline according to claim 2, characterized in that: The positioning assembly comprises a positioning tube (11) fixedly mounted on one side of the fixing tube (9); one end of the positioning tube (11) is threadedly connected to a positioning rod (12); one end of the positioning rod (12) passes through the positioning tube (11) and the fixing tube (9) in sequence and extends to the inner cavity of the fixing tube (9) to fit with the surface of the handle (10).

4. A valve for chemical pipeline according to claim 1, characterized in that: A connecting flange (13) is fixedly mounted on one end of the feed pipe (3) and the discharge pipe (4), and a connecting hole (14) is provided on the surface of the connecting flange (13).

5. A valve for chemical pipeline according to claim 1, characterized in that: The valve body is spherically arranged, the valve core (2) and the valve body are spherically arranged to match each other, and the surface of the valve core (2) fits against the inner wall of the valve body.

6. A valve for chemical pipeline according to claim 1, characterized in that: The first channel (5) and the second channel (6) are arranged in a vertical direction, and the intersection of the second channel (6) and the first channel (5) is arranged to bulge upwards in a curved shape.

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