A gate filter valve and method

Abstract

A gate filter valve and method, which filters water in a channel arranged on a raft plate from right to left through a filter screen on the raft plate arranged on a valve housing. When the filter screen needs to be cleaned, a longitudinal movement structure drives a blocking rod to move downward, and then the blocking rod drives a piston in a cavity on the valve housing to move downward. The piston moves downward to discharge the water in the cavity through a water outlet one-way valve and a flushing pipe into the cleaning cavity. Since the longitudinal movement structure simultaneously drives the raft plate to move downward, the filter screen moves downward into the cleaning cavity and is flushed by the water discharged from the flushing pipe. Since the blocking rod also descends to open the lower end channel of the cleaning cavity, the flushed sewage is discharged from the lower end of the cleaning cavity. Then the longitudinal movement structure is reset in the reverse direction, and the spring drives the piston to rise, and the water inlet one-way valve allows water to enter the cavity.

Description

Technical Field

[0001] This patent relates to the field of filter valve technology, specifically to a gate filter valve and method. Background Art

[0002] Filter valve is also called filter: it is a device for filtering pretreatment. Filter valve is a necessary filtering device for hydraulic control valves and precision mechanical products that are easy to clog. It is an indispensable device for pipeline series that convey media. It is usually installed at the inlet end of hydraulic control valves, pressure reducing valves, pressure relief valves, water level valves and other equipment to eliminate impurities in the medium, prevent granular impurities from entering the channel and causing clogging, and protect the accessories on the equipment pipeline from wear and clogging.

[0003] In the prior art, some technical solutions achieve filtering of water, but the prior art solutions require frequent cleaning of the filter element, which increases the labor intensity of the staff. Summary of the invention

[0004] The purpose of the present invention is to design a gate filter valve in order to solve the problem raised in the background technology.

[0005] The technical scheme of the present invention is as follows: a gate filter valve comprises a valve housing, a channel, a raft, a filter screen, a cavity, a piston, an inlet check valve, a driving rod, a cleaning cavity, a flushing pipe, an outlet check valve, a blocking rod, a longitudinal displacement structure, and a spring. The valve housing is provided with a channel, a raft is slidably inserted into the channel, a filter screen is installed on the raft and at a corresponding position of the channel, a cavity is provided on the valve housing at the lower side of the channel, a piston is installed in the cavity, an inlet check valve is installed on the piston, a driving rod passes through the piston, and the lower end of the driving rod slides out of the valve housing, a cleaning cavity is provided on the valve housing at the lower part of the raft, a flushing pipe is connected between the cleaning cavity and the cavity, a water outlet check valve is installed on the flushing pipe, a blocking rod is slidably inserted into the lower part of the cleaning cavity, the lower end of the driving rod, the lower end of the raft, and the lower end of the blocking rod are connected with the longitudinal displacement structure, a spring is sleeved on the driving rod, and the spring is located in the lower cavity of the piston.

[0006] Furthermore, the longitudinal movement structure includes a moving block, a driving screw, a mounting frame, and a power motor. The moving block is connected to the lower end of the driving rod, the lower end of the raft plate, and the lower end of the blocking rod. The driving screw is rotatably installed at the lower end of the valve housing and engages through the moving block. A mounting frame is installed at the lower part of the valve housing, and a power motor is installed on the mounting frame. The power motor is connected to the lower end of the driving screw.

[0007] Furthermore, the upper part of the raft plate is slidably embedded in the valve housing, and the vertical length of the upper part of the raft plate slidably embedded in the valve housing is greater than or equal to the length of the part of the driving screw rod located below the moving block.

[0008] Furthermore, the lower end of the flushing pipe is located at the lower part of the cavity and is connected to the cavity, and the upper part of the flushing pipe is located at the upper part of the cleaning cavity and is connected to the cleaning cavity.

[0009] Furthermore, the upper end of the driving rod exceeds the upper end of the piston by a distance equal to the distance between the lower end of the filter and the upper end of the cleaning chamber.

[0010] A method for cleaning a gate filter valve. When cleaning the filter screen, the longitudinal movement structure drives the driving rod to move downward, and then the driving rod drives the piston in the upper cavity of the valve shell to move downward. The piston moves downward to discharge the water in the cavity through the water outlet one-way valve and the flushing pipe into the cleaning cavity. The filter screen moves downward into the cleaning cavity and is flushed under the action of the water discharged from the flushing pipe.

[0011] Furthermore, the flushed sewage is discharged from the lower end of the cleaning chamber.

[0012] Furthermore, the longitudinal movement structure is reset in the reverse direction, the spring drives the piston to rise, and the water inlet check valve allows water to enter the cavity.

[0013] The remarkable effect of the present invention is that the present invention provides a gate filter valve, which has the following beneficial effects. Through its structural design, the device filters the water in the channel arranged on the raft plate from right to left through the filter screen on the raft plate arranged on the valve shell. When the filter screen needs to be cleaned, the longitudinal movement structure drives the blocking rod to move downward, and then the blocking rod drives the piston in the upper cavity of the valve shell to move downward. The piston moves downward to discharge the water in the cavity through the water outlet one-way valve and the flushing pipe into the cleaning cavity. Since the longitudinal movement structure drives the raft plate to move downward at the same time, the filter screen moves downward into the cleaning cavity and is flushed under the action of the water discharged from the flushing pipe. Since the blocking rod also descends to open the lower end channel of the cleaning cavity at the same time, the flushed sewage is discharged from the lower end of the cleaning cavity, and then the longitudinal movement structure is reset in the reverse direction, the spring drives the piston to rise, and the water inlet one-way valve allows water to enter the cavity, thereby realizing automatic cleaning of the filter screen, thereby solving the problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the gate filter valve of the present invention;

[0015] Figure 2 It is a schematic structural diagram of the cleaning state of the gate filter valve of the present invention.

[0016] In the figure, 1, valve housing; 2, channel; 3, raft; 4, filter screen; 5, cavity; 6, piston; 7, water inlet check valve; 8, drive rod; 9, cleaning cavity; 10, flushing pipe; 11, water outlet check valve; 12, blocking rod; 13, spring; 14, moving block; 15, drive screw; 16, mounting frame; 17, power motor DETAILED DESCRIPTION

[0017] 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.

[0018] In the description of the present invention, it should be noted that the terms "upper / lower end", "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, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting / sleeving", "sleeve connection", "connection", etc. should be understood in a broad sense. For example, "connection" 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 indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] See also Figure 1-2 The present invention provides a technical solution: a gate filter valve, comprising a valve housing 1, a channel 2, a raft 3, a filter screen 4, a cavity 5, a piston 6, a water inlet check valve 7, a driving rod 8, a cleaning cavity 9, a flushing pipe 10, a water outlet check valve 11, a blocking rod 12, a longitudinal movement structure, and a spring 13. The valve housing 1 is provided with a channel 2, a raft 3 is slidably inserted on the channel 2, a filter screen 4 is installed on the raft 3 and at a position corresponding to the channel 2, a cavity 5 is provided on the valve housing 1 at the lower side of the channel 2, a piston 6 is installed in the cavity 5, and the piston 6 A water inlet check valve 7 is installed on it, a driving rod 8 passes through the piston 6, and the lower end of the driving rod 8 slides out of the valve shell 1. A cleaning chamber 9 is opened on the valve shell 1 at the lower part of the raft plate 3, and a flushing pipe 10 is connected between the cleaning chamber 9 and the cavity 5. A water outlet check valve 11 is installed on the flushing pipe 10, and a blocking rod 12 is slidably inserted at the lower part of the cleaning chamber 9. The lower ends of the driving rod 8, the raft plate 3 and the blocking rod 12 are connected with a longitudinal movement structure. A spring 13 is mounted on the driving rod 8, and the spring 13 is located in the lower cavity 5 of the piston 6.

[0021] In the present invention, the longitudinal movement structure includes a moving block 14, a driving screw 15, a mounting frame 16, and a power motor 17. The moving block 14 is connected to the lower end of the driving rod 8, the lower end of the raft 3, and the lower end of the blocking rod 12. The driving screw 15 is rotatably mounted on the lower end of the valve housing 1 and engages through the moving block 14. A mounting frame 16 is installed at the lower part of the valve housing 1, and a power motor 17 is installed on the mounting frame 16. The power motor 17 is connected to the lower end of the driving screw 15. When working, the power motor 17 drives the driving screw 15 to rotate, and the rotation of the driving screw 15 drives the moving block 14 to move, thereby driving the driving rod 8, the raft 3, and the blocking rod 12 to move.

[0022] In the present invention, the upper part of the raft plate 3 is slidably embedded in the valve housing 1, and the vertical length of the upper part of the raft plate 3 slidingly embedded in the valve housing 1 is greater than or equal to the length of the driving screw 15 located below the moving block 14, so that when the raft plate 3 moves downward, the upper part of the raft plate 3 can block the channel 2.

[0023] In the present invention, the lower end of the flushing pipe 10 is located at the lower part of the cavity 5 and is connected to the cavity 5, and the upper part of the flushing pipe 10 is located at the upper part of the cleaning chamber 9 and is connected to the cleaning chamber 9, so that when the filter 4 moves into the cleaning chamber 9, the water flow sprayed by the flushing pipe 10 can clean the filter 4.

[0024] In the present invention, the upper end of the driving rod 8 exceeds the upper end of the piston 6 by a distance from the lower end of the filter 4 to the upper end of the cleaning chamber 9, and thus the driving rod 8 will not drive the piston 6 to move downward before the filter 4 moves into the cleaning chamber 9.

[0025] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0026] In this embodiment:

[0027] This device filters the water in the channel 2 arranged on the raft plate 3 from right to left through the filter screen 4 on the raft plate 3 arranged on the valve housing 1. When the filter screen 4 needs to be cleaned, the longitudinal movement structure drives the driving rod 8 to move downward, and then the driving rod 8 drives the piston 6 in the cavity 5 on the valve housing 1 to move downward. The piston 6 moves downward to discharge the water in the cavity 5 through the water outlet one-way valve 11 and the flushing pipe 10 into the cleaning cavity 9. Since the longitudinal movement structure also drives the raft plate 3 to move downward, the filter screen 4 moves downward into the cleaning cavity 9 and is flushed under the action of the water discharged from the flushing pipe 10. At the same time, the blocking rod 12 also descends to open the channel 2 at the lower end of the cleaning cavity 9, and then the flushed sewage is discharged from the lower end of the cleaning cavity 9. Then the longitudinal movement structure is reset in the reverse direction, and the spring 13 drives the piston 6 to rise, and the water inlet one-way valve 7 allows water to enter the cavity 5.

[0028] 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 sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0029] 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 gate filter valve, characterized in that: The invention comprises a valve housing (1), a channel (2), a raft (3), a filter (4), a cavity (5), a piston (6), a water inlet check valve (7), a driving rod (8), a cleaning cavity (9), a flushing pipe (10), a water outlet check valve (11), a blocking rod (12), a longitudinal displacement structure, and a spring (13); the valve housing (1) is provided with a channel (2), a raft (3) is slidably inserted on the channel (2), a filter (4) is installed at a position corresponding to the channel (2) on the raft (3), a cavity (5) is provided on the valve housing (1) below the channel (2), a piston (6) is installed in the cavity (5), and a water inlet check valve (7) is installed on the piston (6). ), a driving rod (8) passes through the piston (6), the lower end of the driving rod (8) slides out from the valve housing (1), a cleaning chamber (9) is opened on the lower valve housing (1) of the raft plate (3), a flushing pipe (10) is connected between the cleaning chamber (9) and the cavity (5), a water outlet non-return valve (11) is installed on the flushing pipe (10), a blocking rod (12) is slidably inserted in the lower part of the cleaning chamber (9), the lower end of the driving rod (8), the lower end of the raft plate (3) and the lower end of the blocking rod (12) are connected with a longitudinal movement structure, a spring (13) is mounted on the driving rod (8), and the spring (13) is located in the lower cavity (5) of the piston (6).

2. The gate filter valve according to claim 1, characterized in that: The longitudinal movement structure comprises a moving block (14), a driving screw (15), a mounting frame (16), and a power motor (17); the moving block (14) is connected to the lower end of the driving rod (8), the lower end of the raft (3), and the lower end of the blocking rod (12); the driving screw (15) is mounted on the lower end of the valve housing (1) and engages and penetrates the moving block (14); a mounting frame (16) is mounted on the lower part of the valve housing (1); a power motor (17) is mounted on the mounting frame (16); and the power motor (17) is connected to the lower end of the driving screw (15).

3. The gate filter valve according to claim 2, characterized in that: During operation, the power motor (17) drives the driving screw (15) to rotate, and the driving screw (15) drives the moving block (14) to move, thereby driving the driving rod (8), the raft plate (3) and the blocking rod (12) to move.

4. The gate filter valve according to claim 1, characterized in that: The upper part of the raft plate (3) is slidably embedded in the valve housing (1), and the vertical length of the upper part of the raft plate (3) slidably embedded in the valve housing (1) is greater than or equal to the length of the portion of the driving screw rod (15) located below the moving block (14).

5. The gate filter valve according to claim 1, characterized in that: The lower end of the flushing pipe (10) is located at the lower part of the cavity (5) and is connected to the cavity (5); the upper part of the flushing pipe (10) is located at the upper part of the cleaning cavity (9) and is connected to the cleaning cavity (9).

6. The gate filter valve according to claim 1, characterized in that: The upper end of the driving rod (8) extends beyond the upper end of the piston (6) by a distance equal to the distance between the lower end of the filter screen (4) and the upper end of the cleaning chamber (9).

7. The gate filter valve according to any one of claims 1 to 6, characterized in that: In the gate filter valve, all electrical components are connected to their adapted power supplies through wires, and a corresponding controller is selected.

8. A method for cleaning a gate filter valve, using the gate filter valve as claimed in claim 3, characterized in that: When cleaning the filter screen (4), the longitudinal movement structure drives the driving rod (8) to move downward, and the driving rod (8) then drives the piston (6) in the upper cavity (5) of the valve housing (1) to move downward. The piston (6) moves downward to discharge the water in the cavity (5) through the water outlet check valve (11) and the flushing pipe (10) into the cleaning cavity (9). The filter screen (4) moves downward into the cleaning cavity (9) and is flushed under the action of the water discharged from the flushing pipe (10).

9. A filtering method for a gate filter valve according to claim 8, characterized in that: The flushed sewage is discharged from the lower end of the cleaning chamber (9).

10. A filtering method for a gate filter valve according to claim 9, characterized in that: The longitudinal movement structure is reset in the reverse direction, the spring (13) drives the piston (6) to rise, and the water inlet check valve (7) allows water to enter the cavity (5).

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