Filter for main valve bypass pipeline

Abstract

The utility model relates to a filter for a main valve bypass pipeline. The filter comprises a pipe body with a water inlet end and a water outlet end, the pipe body is connected with a bypass connector on the main valve, the water inlet end of the pipe body is located in the main valve, and the water outlet end is located outside the main valve. A filter screen is arranged at the water inlet end of the pipe body, and the water outlet end of the pipe body is connected with a bypass pipeline. The filter can automatically remove impurities without manual maintenance.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and more specifically, to a filter for a main valve bypass pipeline. Background Technology

[0002] Current hydraulic automatic control valves include main valves and bypass pipelines connected to them. Pressure water from the main pipeline is introduced through the bypass pipeline to control the downstream pressure and / or flow rate of the main valve. To prevent clogging of control components in the bypass pipeline (such as solenoid valves, shut-off valves, flow control valves, etc.), the pressure water from the main pipeline to the bypass pipeline needs to be filtered. Therefore, filters are often installed on the bypass pipeline to remove impurities from the water. Filters installed on the bypass pipeline need to be periodically disassembled and cleaned to remove accumulated impurities and restore their filtering function. Currently, filter disassembly and cleaning maintenance requires manual operation and cannot be automated.

[0003] The prior art CN201810722165.8 discloses a pipeline filter, including a filter housing, a cover, a filter element, and a partition. The cover is disposed on the upper part of the filter housing. The filter housing has an inlet and an outlet on both sides, respectively. The inlet has an inlet flange, and the outlet has an outlet flange. The filter element is located inside the filter housing and includes an inner filter screen and an outer filter screen with a gap between them. The inner and outer filter screens are fixed inside the filter housing by the partition. A bracket is provided in the gap between the inner and outer filter screens. One end of the bracket is fixed to the inner filter screen, and the other end is fixed to the outer filter screen. There are multiple brackets, which are spaced apart in the gap between the inner and outer filter screens.

[0004] The existing technical solutions can only solve the problem of easy disassembly and cleaning of filters, but cannot achieve automatic maintenance of filters. Utility Model Content

[0005] This invention provides a filter that utilizes the water flow from the main valve to achieve automatic maintenance without manual intervention.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] A filter for a main valve bypass pipe is disclosed. The filter includes a pipe body having an inlet end and an outlet end. The pipe body is connected to a bypass interface on the main valve. The inlet end of the pipe body is located inside the main valve, and the outlet end is located outside the main valve. A filter screen is provided on the inlet end of the pipe body, and the outlet end of the pipe body is connected to the bypass pipe.

[0008] Preferably, the outer surface of the tube body is provided with an external thread adapted to the bypass interface.

[0009] Preferably, a water inlet hole is provided on the side wall of the water inlet end, and the filter screen covers the water inlet hole.

[0010] Preferably, the water inlet holes are spaced apart along the axial direction of the pipe body.

[0011] Preferably, a water inlet groove is provided on the side wall of the water inlet end, and the filter screen covers the water inlet groove.

[0012] Preferably, the water inlet troughs are spaced apart along the circumferential direction.

[0013] Preferably, the outlet end of the pipe is provided with a connector for connecting to a bypass pipe.

[0014] Preferably, the connector is provided with an internal thread for connection with a bypass pipe.

[0015] Preferably, the tube is straight.

[0016] Preferably, the tube body is right-angled.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. The filter uses a filter screen to remove impurities from the water, thus achieving a filtration function. The inlet of the filter is located inside the main valve, and the filter screen protrudes from the inner wall of the main valve. The flowing water inside the main valve can flush away impurities on the filter screen, realizing automatic maintenance of the filter.

[0019] 2. The water outlet is located outside the main valve. The filter can not only perform the function of filtration, but also act as a connector. It can be used to replace a pipe connector or replace a pipe connector plus a right angle elbow. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a linear filter for a main valve bypass pipeline according to the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of a right-angle filter for a main valve bypass pipeline according to the present invention;

[0022] Figure 3 This is a schematic diagram of the installation structure of a filter for a main valve bypass pipeline according to the present invention. Detailed Implementation

[0023] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0025] Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," 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 this application. 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 can be combined in any suitable manner in one or more embodiments or examples.

[0028] Example 1

[0029] like Figures 1-3As shown, a filter for a main valve bypass pipe is disclosed. The filter includes a pipe body 1 having an inlet end and an outlet end. The pipe body 1 is connected to a bypass interface on the main valve 3. The inlet end of the pipe body 1 is located inside the main valve 3, and the outlet end is located outside the main valve 3. A filter screen 2 is provided on the inlet end of the pipe body 1, and the outlet end of the pipe body 1 is connected to the bypass pipe.

[0030] In this embodiment, the main valve 3 is connected to a pipeline, and most of the water flow in the pipeline flows through the main valve 3. Like a hydraulically controlled valve, its main function is to control the operation of the main valve 3 by introducing pressurized water from the main pipeline, thereby controlling the pressure and / or flow rate after the main valve 3. Structurally, the hydraulically controlled valve includes a bypass pipe connected to the inlet and / or outlet of the main valve. The water flow in the main valve 3 is introduced through the bypass pipe to the control mechanism (such as a diaphragm control mechanism or a piston control mechanism) of the hydraulically controlled valve. This filter is used to filter the water flowing into the bypass pipe, preventing impurities in the water from entering the bypass pipe and causing blockage of the control elements and / or control mechanisms on the bypass pipe. The filter includes a pipe body 1 with an inlet and an outlet, which is directly connected to the bypass interface on the main valve 3. The bypass interface refers to the connection port between the bypass pipe and the main valve 3. Specifically, the inlet of the bypass pipe is located inside the main valve 3, and the outlet is located outside the main valve 3. Meanwhile, a filter screen 2 is installed on the inlet end, protruding from the inner wall of the main valve, and the outlet end is directly connected to the bypass pipe.

[0031] This filter can be used directly as a connector, and the angled type can also be used as a connector with an elbow. It is installed on the main valve to connect the main valve 3 and the bypass pipe. Water in the main valve 3 flows in from the inlet end through the filter screen 2 and flows out from the outlet end into the bypass pipe. The filter effectively prevents impurities in the water from entering the bypass pipe. At the same time, the kinetic energy of the water flow in the main valve 3 washes the filter screen 2, thereby removing impurities from the filter screen 2, achieving an automatic cleaning function. It requires no manual maintenance and can be used for a long time.

[0032] Example 2

[0033] A filter for a main valve bypass pipe is disclosed. The filter includes a pipe body 1 having an inlet end and an outlet end. The pipe body 1 is connected to a bypass port on the main valve 3. The inlet end of the pipe body 1 is located inside the main valve 3, and the outlet end is located outside the main valve 3. A filter screen 2 is provided on the inlet end of the pipe body 1, and the outlet end of the pipe body 1 is connected to the bypass pipe.

[0034] The difference between this embodiment and Embodiment 1 is that the outer surface of the pipe body 1 is provided with an external thread that matches the bypass interface on the main valve 3. The pipe body 1 and the main valve 3 are connected by a thread, which not only ensures a stable connection but also facilitates installation.

[0035] Specifically, the external thread is located in the middle of the pipe body.

[0036] Example 3

[0037] A filter for a main valve bypass pipe is disclosed. The filter includes a pipe body 1 having an inlet end and an outlet end. The pipe body 1 is connected to a bypass port on the main valve 3. The inlet end of the pipe body 1 is located inside the main valve 3, and the outlet end is located outside the main valve 3. A filter screen 2 is provided on the inlet end of the pipe body 1, and the outlet end of the pipe body 1 is connected to the bypass pipe.

[0038] The difference between this embodiment and Embodiment 1 is that, to facilitate the entry of water from the main valve 3 into the pipe body, an inlet hole can be provided on the side wall of the inlet end, and the filter screen 2 covers the inlet hole. Specifically, the inlet holes can be spaced apart along the axial direction of the pipe body 1. Multiple inlet holes are provided on the side wall of the inlet end to ensure the water flow rate in the bypass pipe.

[0039] In this embodiment, an inlet groove can also be provided on the side wall of the inlet end, and the filter screen 2 can be wrapped around the inlet groove. Specifically, the inlet grooves are spaced apart along the circumferential direction of the pipe body. By designing the inlet grooves, the flow area of ​​water entering the pipe body from the main valve is increased, thereby increasing the water flow rate of the bypass pipe.

[0040] Alternatively, both an inlet hole and an inlet trough can be installed on the side wall of the inlet end.

[0041] Example 4

[0042] A filter for a main valve bypass pipe is disclosed. The filter includes a pipe body 1 having an inlet end and an outlet end. The pipe body 1 is connected to a bypass port on the main valve 3. The inlet end of the pipe body 1 is located inside the main valve 3, and the outlet end is located outside the main valve 3. A filter screen 2 is provided on the inlet end of the pipe body 1, and the outlet end of the pipe body 1 is connected to the bypass pipe.

[0043] The difference between this embodiment and Embodiment 1 is that the outlet end of the pipe body 1, located outside the main valve 3, is equipped with a connector for connecting to the bypass pipe. The connector has an internal thread for connecting to the bypass pipe. The pipe body 1 and the bypass pipe are also connected by threads, which facilitates the assembly of the pipe body 1 and the bypass pipe.

[0044] Example 5

[0045] A filter for a main valve bypass pipe is disclosed. The filter includes a pipe body 1 having an inlet end and an outlet end. The pipe body 1 is connected to a bypass port on the main valve 3. The inlet end of the pipe body 1 is located inside the main valve 3, and the outlet end is located outside the main valve 3. A filter screen 2 is provided on the inlet end of the pipe body 1, and the outlet end of the pipe body 1 is connected to the bypass pipe.

[0046] The difference between this embodiment and the above embodiments is that the pipe body 1 can be set as a straight line or an angle (including right angle and non-right angle). In addition to filtering, the filter can also be used as a connector. The angled type can also replace the connector and elbow, which facilitates the connection between the main valve and the bypass pipe. The filter can be set as a straight line or an angle according to actual needs, thereby facilitating the installation of the bypass pipe.

[0047] Obviously, the above-described embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A filter for a main valve bypass pipeline, characterized in that, The filter includes a pipe with an inlet and an outlet; the pipe is connected to a bypass port on the main valve, with the inlet of the pipe located inside the main valve and the outlet located outside the main valve; a filter screen is provided on the inlet of the pipe, and the outlet of the pipe is connected to a bypass pipe.

2. A filter for a main valve bypass pipeline according to claim 1, characterized in that, The outer surface of the tube is provided with an external thread adapted to the bypass interface.

3. A filter for a main valve bypass pipeline according to claim 1, characterized in that, A water inlet hole is provided on the side wall of the water inlet end, and the filter screen covers the water inlet hole.

4. A filter for a main valve bypass pipeline according to claim 3, characterized in that, The water inlet holes are spaced apart along the axial direction of the pipe body.

5. A filter for a main valve bypass pipeline according to claim 1, characterized in that, A water inlet groove is provided on the side wall of the water inlet end, and the filter screen covers the water inlet groove.

6. A filter for a main valve bypass pipeline according to claim 5, characterized in that, The water inlet troughs are spaced apart along the circumferential direction.

7. A filter for a main valve bypass pipeline according to claim 1, characterized in that, The outlet end of the pipe is equipped with a connector for connecting to a bypass pipe.

8. A filter for a main valve bypass pipeline according to claim 1, characterized in that, The connector is provided with threads for connection to a bypass pipe.

9. A filter for a main valve bypass pipeline according to claim 1, characterized in that, The tube is straight.

10. A filter for a main valve bypass pipeline according to claim 1, characterized in that, The tube is right-angled.

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