A multi-channel backwash filter

Abstract

The utility model provides a kind of multi-channel backwash filter, by setting liquid inlet, liquid outlet and mounting port in barrel, and annular filter screen is set in barrel, form inner chamber and annular outer chamber, liquid inlet and first mounting port are communicated with inner chamber, and main body is set in first mounting port, and set up blowdown port and multiple blowdown channels, reversing gear is movably set in main body, one end of reversing gear is communicated with blowdown port, second driving part is drivingly connected with reversing gear, the other end of reversing gear driven by second driving part is communicated with any blowdown channel, movable element is rotatably set in inner chamber, one end of movable element is drivingly connected with first driving part, the other end is extended from first mounting port and rotatably connected with main body, movable element has multiple suction nozzles for sucking impurities of annular filter screen and multiple flow channels communicated with suction nozzle one by one, and multiple suction nozzles are set along the axial direction of movable element, multiple flow channels are communicated with multiple blowdown channels one by one, and valve is set in blowdown port.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment, specifically a multi-channel backwash filter. Background Technology

[0002] Filters are an indispensable device in pipelines transporting media, and are typically installed on pressure reducing valves, pressure relief valves, and positioning water valves. When a filter is in operation, the media to be treated passes through the filter's annular screen, where impurities are blocked. However, when there are too many impurities, the annular screen gradually becomes clogged, reducing the filter's filtration efficiency. Therefore, a filter is needed that can backwash the annular screen when it becomes clogged. Utility Model Content

[0003] In view of this, the present invention provides a multi-channel backwash filter.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A multi-channel backwash filter includes: a cylinder, a drain assembly, and an annular filter screen;

[0006] The cylinder has an inlet, an outlet and a first mounting port, wherein the outlet is located on the side wall of the cylinder, and the inlet and the first mounting port are both located at the end of the cylinder;

[0007] An annular filter screen is installed inside the cylinder to form an inner chamber and an annular outer chamber. The liquid inlet and the first installation port are both connected to the inner chamber.

[0008] The sewage discharge assembly includes a main body, a first drive component, a moving component, a second drive component, a commutator, and a valve;

[0009] The main body is located at the first installation port and has a drain port and multiple drain channels, and an insertion port for moving parts to be inserted is provided at one end of the main body near the cylinder.

[0010] The commutator is movably mounted on the main body, with one end of the commutator connected to the drain outlet;

[0011] The second drive unit is connected to the commutator drive, and the second drive unit is used to drive the other end of the commutator to connect with any sewage discharge channel.

[0012] The movable part is rotatably disposed in the inner cavity, and one end of the movable part is connected to the first driving part for transmission, while the other end extends out from the first mounting port and is disposed in the main body;

[0013] The movable part has multiple suction nozzles for sucking up impurities from the annular filter screen and multiple flow channels. The multiple flow channels are connected to the suction nozzles one by one. The multiple suction nozzles are arranged along the circumference of the movable part and the multiple suction nozzles are at different heights in the movable part.

[0014] Multiple flow channels are connected to multiple sewage discharge channels in a one-to-one correspondence;

[0015] The valve is located at the drain outlet.

[0016] Preferably, the outlets of the multiple flow channels are located along the axial direction of the movable member at one end of the movable member extending into the inlet.

[0017] The inner wall of the inlet is provided with multiple annular grooves along the direction away from the cylinder. These annular grooves serve as inlets for the sewage discharge channels, and each annular groove is connected to the outlet of a flow channel.

[0018] Preferably, a second mounting port for installing a commutator is provided at the end of the main body away from the cylinder;

[0019] The second installation port has multiple interfaces circumferentially opened on the side wall, and the interfaces are one end of the sewage discharge channel.

[0020] Preferably, the commutator includes: a moving body;

[0021] The second installation port includes a first chamber and a second chamber;

[0022] The first chamber is located between the second chamber and the inlet.

[0023] Multiple interfaces are located on the side wall of the first chamber;

[0024] The sewage outlet is located on one side of the second chamber and is connected to the second chamber;

[0025] The moving body has a flow channel. The first end of the flow channel is located on one side of the upper part of the moving body and is connected to any one of the interfaces. The second end of the flow channel is located on one side of the lower part of the moving body and is connected to the second chamber.

[0026] Preferably, multiple suction nozzles are arranged in a spiral shape on the movable part.

[0027] Preferably, the suction nozzle has an arc-shaped structure that cooperates with the annular filter screen.

[0028] Preferably, both the liquid inlet and the first mounting port are located at the lower end of the cylinder.

[0029] Preferably, it also includes: a positioning sensor for detecting commutator rotation.

[0030] Preferably, the first driving component is a geared motor, and the second driving component is a servo motor.

[0031] Based on the above, this utility model provides a multi-channel backwash filter. The filter body has an inlet, an outlet, and an installation port, with the outlet located on the side wall of the body and the inlet and installation port located at the ends of the body. An annular filter screen is placed inside the body, forming an inner chamber and an outer annular chamber. The inlet and the first installation port are both connected to the inner chamber. The main body is located at the first installation port and has a drain port and multiple drain channels. A commutator is movably mounted on the main body, with one end connected to the drain port. The second driving component is connected to the commutator, and the other end of the second driving component drives the commutator to communicate with any of the drain channels. The movable component is rotatably disposed in the inner cavity, and one end of the movable component is connected to the first driving component, while the other end extends from the first mounting port and is rotatably connected to the main body. The movable component has multiple suction nozzles for sucking up impurities from the annular filter screen and multiple flow channels that communicate with each suction nozzle. The multiple suction nozzles are arranged along the axial direction of the movable component, and the multiple flow channels communicate with each drain channel. A valve is disposed at the drain port. With the multi-channel backwash filter disclosed above, since this application can connect multiple suction nozzles to the drain port one by one through the commutator, it can clean the impurities on the annular filter screen corresponding to the multiple suction nozzles with liquid, thus ensuring the filtration efficiency of the multi-channel backwash filter. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 A schematic diagram of the structure of a multi-channel backwash filter provided in an embodiment of this utility model;

[0034] Figure 2 A cross-sectional view of the multi-channel backwash filter provided in an embodiment of this utility model;

[0035] Figure 3 A cross-sectional view showing the cooperation between the main body and the commutator in an embodiment of this utility model;

[0036] Figure 4 This is a schematic diagram of the structure of the movable component provided in an embodiment of the present utility model;

[0037] Figure 5 A cross-sectional view of the movable component provided in an embodiment of this utility model;

[0038] Figure 6 A schematic diagram of the main body provided for an embodiment of this utility model;

[0039] Figure 7 A cross-sectional view of the main body provided for an embodiment of this utility model;

[0040] Figure 8 A cross-sectional schematic diagram of the main body provided for an embodiment of this utility model;

[0041] Figure 9 This is a schematic diagram of the commutator provided in an embodiment of the present utility model.

[0042] The components include: a cylinder 1, an inlet 11, an outlet 12; a sewage discharge assembly 2, a main body 21, a sewage discharge port 211, a sewage discharge channel 212, an extension port 213, an annular groove 2131, a second mounting port 214, a docking port 2141, a first driving component 22, a movable component 23, a suction nozzle 231, a flow channel 232, a second driving component 24, a commutator 25, and a flow guide channel 251; and an annular filter screen 3. Detailed Implementation

[0043] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] In this application, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] This utility model embodiment provides a multi-channel backwash filter, see [link to relevant documentation]. Figure 1 and combined Figures 2 to 9 , Figure 1 This is a schematic diagram of a multi-channel backwash filter, which includes: a cylindrical body 1, a sewage discharge assembly 2, and an annular filter screen 3;

[0046] The cylinder 1 has a liquid inlet 11, a liquid outlet 12 and a first mounting port, wherein the liquid outlet 12 is located on the side wall of the cylinder 1, and the liquid inlet 11 and the first mounting port are both located at the end of the cylinder 1.

[0047] An annular filter screen 3 is disposed inside the cylinder 1, forming an inner chamber and an annular outer chamber. The liquid inlet 11 and the first mounting port are both connected to the inner chamber.

[0048] The sewage discharge assembly 2 includes a main body 21, a first driving component 22, a moving component 23, a second driving component 24, a commutator 25, and a valve;

[0049] The main body 21 is located at the first installation port and has a drain port 211 and multiple drain channels 212. The main body 21 has an extension port 213 for the movable part 23 to extend into at one end near the cylinder 1.

[0050] The commutator 25 is movably mounted on the main body 21, and one end of the commutator 25 is connected to the drain outlet 211;

[0051] The second driving member 24 is connected to the commutator 25 in a transmission connection. The second driving member 24 is used to drive the other end of the commutator 25 to communicate with any sewage channel 212.

[0052] The movable part 23 is rotatably disposed in the inner cavity, and one end of the movable part 23 is connected to the first driving part 22 for transmission, and the other end extends out from the first mounting port and is rotatably connected to the main body 21;

[0053] The movable part 23 has multiple suction nozzles 231 for sucking up impurities from the annular filter screen 3 and multiple flow channels. The multiple flow channels are connected to the suction nozzles 231 in a one-to-one correspondence. The multiple suction nozzles 231 are arranged along the circumference of the movable part 23, and the multiple suction nozzles 231 are at different heights in the movable part 23.

[0054] Multiple flow channels are connected to multiple sewage discharge channels 212 in a one-to-one correspondence;

[0055] The valve is located at the drain outlet 211.

[0056] It should be noted that when the multi-channel backwash filter of this application is working normally, the valve is in the closed state. At this time, the liquid enters through the inlet 11 and passes through the annular filter screen 3. Impurities in the liquid are blocked, and the filtered liquid flows out through the outlet 12. When there are too many impurities in the annular filter screen 3, the liquid flow rate from the outlet 12 decreases. At this time, the valve is opened and the first drive unit 22 is activated. The liquid in the cylinder 1 will pass through the annular filter screen 3 and enter the suction nozzle 231. At this time, the impurities in the annular filter screen 3 will also enter the suction nozzle 231 with the liquid under the flushing action of the liquid. Then, the liquid flows to the diverter 25 through the flow channel connected to the suction nozzle 231, and the liquid is discharged from the drain port 211 through the diverter 25.

[0057] It should also be noted that multiple suction nozzles 231 are arranged along the circumference of the movable part 23, and the multiple suction nozzles 231 are arranged at different heights on the movable part 23, so that the line connecting any two suction nozzles 231 is not parallel to the axis of the movable part 23.

[0058] It is worth noting that, in this application, because the reversing device 25 can only connect any one of the drain channels 212 to the drain outlet 211, and multiple flow channels are connected one-to-one with multiple drain channels 212, and the suction nozzle 231 used to suck up impurities from the annular filter screen 3 is connected one-to-one with multiple flow channels, each time the annular filter screen 3 is backwashed, only one suction nozzle 231 can clean the impurities on the annular filter screen 3. When the first driving member 22 drives the movable member 23 to rotate, it can drive the suction nozzle 231 to clean the circumference of the annular filter screen 3. After the impurities at the height position of the annular filter screen 3 corresponding to the suction nozzle 231 are cleaned, the reversing device 25 connects another drain channel 212 to the drain outlet 211, and the first driving member 22 drives the movable member 23 to rotate. This process is repeated to clean the impurities on the entire annular filter screen 3. After the impurities on the annular filter screen 3 are cleaned, the valve can be closed to perform normal filtration.

[0059] This embodiment of the invention features a cylinder 1 with an inlet 11, an outlet 12, and a first mounting port, with the outlet 12 located on the side wall of the cylinder 1. The inlet 11 and the first mounting port are both located at the ends of the cylinder 1. An annular filter 3 is placed inside the cylinder 1, forming an inner chamber and an annular outer chamber. Both the inlet 11 and the first mounting port communicate with the inner chamber. The main body 21 is positioned at the first mounting port and has a drain outlet 211 and multiple drain channels 212. An insertion port 213 for a movable component 23 to extend into is located at one end of the main body 21 near the cylinder 1. A commutator 25 is movably mounted on the main body 21, with one end of the commutator 25 connected to the drain outlet 21. 1. A second driving member 24 is connected to a commutator 25. The second driving member 24 drives the other end of the commutator 25 to connect with any of the drain channels 212. A movable member 23 is rotatably disposed in the inner cavity, and one end of the movable member 23 is connected to the first driving member 22. The other end extends from the first mounting port and is rotatably connected to the main body 21. The movable member 23 has multiple suction nozzles 231 for sucking up impurities from the annular filter screen 3 and multiple flow channels. The multiple flow channels are connected to the suction nozzles 231 one by one, and the multiple suction nozzles 231 are arranged along the axial direction of the movable member 23. The multiple flow channels are connected to the multiple drain channels 212 one by one. A valve is disposed at the drain port 211. With the multi-channel backwash filter disclosed above, since this application can connect multiple suction nozzles 231 one by one with the drain port 211 through the commutator 25, it can clean the impurities on the annular filter screen 3 corresponding to the multiple suction nozzles 231 through liquid, thus ensuring the filtration efficiency of the multi-channel backwash filter.

[0060] Specifically, the outlets of multiple flow channels are arranged along the axial direction of the movable member 23 at one end of the movable member 23 that extends into the inlet 213;

[0061] The inner wall of the inlet 213 is provided with multiple annular grooves 2131 along the direction away from the cylinder 1. The multiple annular grooves 2131 are the inlets of the sewage discharge channel 212. The multiple annular grooves 2131 are used to connect one-to-one with the outlets of the multiple flow channels.

[0062] It should be noted that the outlets of multiple flow channels are arranged along the axial direction of the movable member 23 at one end of the movable member 23 extending into the inlet 213, and multiple annular grooves 2131 are formed on the inner wall of the inlet 213 in the direction away from the cylinder 1. The multiple annular grooves 2131 are the inlets of the sewage discharge channel 212, and the multiple annular grooves 2131 are connected to the outlets of the multiple flow channels one by one. Thus, when the first driving member 22 drives the movable member 23 to rotate, it can always be ensured that the multiple annular grooves 2131 are connected to the outlets of the multiple flow channels one by one.

[0063] Furthermore, a second mounting port 214 for installing the commutator 25 is provided at the end of the main body 21 away from the cylinder 1;

[0064] The second installation port 214 has multiple interfaces 2141 circumferentially opened on the side wall, and the interfaces 2141 are one end of the sewage channel 212.

[0065] It should be noted that a second mounting port 214 for installing the commutator 25 is provided at the end of the main body 21 away from the cylinder 1, and multiple docking ports 2141 are provided circumferentially on the side wall of the second mounting port 214, and one end of the docking port 2141 is used as a sewage discharge channel 212. Thus, the commutator 25 can connect with the multiple docking ports 2141 one by one, so that the sewage discharge port 211 can be connected with the multiple suction nozzles 231 one by one to clean the impurities of the annular filter screen 3.

[0066] Specifically, the commutator 25 includes: a moving body 251;

[0067] The second mounting port 214 includes a first chamber and a second chamber;

[0068] The first chamber is located between the second chamber and the inlet 213;

[0069] Multiple interfaces 2141 are located on the side wall of the first chamber;

[0070] The sewage outlet 211 is located on one side of the second chamber and is connected to the second chamber;

[0071] The movable body 251 has a flow channel 2511. The first end of the flow channel 2511 is located on one side of the upper part of the movable body 251 and is connected to any pair of interfaces 2141. The second end of the flow channel 2511 is located on one side of the lower part of the movable body 251 and is connected to the second chamber.

[0072] It should be noted that the second mounting port 214 is configured as the first chamber and the second chamber, and the first chamber is located between the second chamber and the extension port 213. Multiple docking ports 2141 are located on the side wall of the first chamber, and the drain port 211 is located on one side of the second chamber and communicates with the second chamber. The movable body 251 has a guide channel 2511. The first end of the guide channel 2511 is located on one side of the upper part of the movable body 251 and communicates with any docking port 2141. The second end of the guide channel 2511 is located on one side of the lower part of the movable body 251 and communicates with the second chamber. Thus, by rotating the movable body 251, the drain port 211 can be connected to the multiple docking ports 2141 one by one.

[0073] Specifically, multiple suction nozzles 231 are arranged in a spiral shape on the movable part 23.

[0074] It should be noted that the multiple suction nozzles 231 can be arranged in a spiral shape on the movable part 23, or they can be arranged irregularly on the movable part 23. Those skilled in the art can choose according to their needs.

[0075] Specifically, the end of the suction nozzle 231 that contacts the annular filter screen 3 has an arc-shaped structure.

[0076] It should be noted that the end of the suction nozzle 231 that contacts the annular filter screen 3 has an arc-shaped structure, so that when the first driving member 22 drives the moving member 23 to rotate, the suction nozzle 231 can better fit against the inner wall of the annular filter screen 3, and thus the impurities in the annular filter screen 3 can be better cleaned through the siphon in the flow channel.

[0077] Furthermore, both the liquid inlet 11 and the first mounting port are located at the lower end of the cylinder 1.

[0078] It should be noted that the liquid inlet 11 and the first mounting port can both be located at the lower end of the cylinder 1, or the liquid inlet 11 and the first mounting port can be respectively located at both ends of the cylinder 1. Those skilled in the art can choose according to their needs.

[0079] Furthermore, the multi-channel backwash filter also includes a positioning sensor for detecting the rotation of the commutator 25.

[0080] It should be noted that by setting a positioning sensor for detecting the rotation of the commutator 25, it can be ensured that the second drive component 24 drives the commutator 25 to accurately connect with any sewage discharge channel 212, so as to ensure that the sewage discharge port 211 can be connected to the suction nozzle 231 through the sewage discharge channel 212 and the flow channel.

[0081] Specifically, the first driving component 22 is a geared motor, and the second driving component 24 is a servo motor.

[0082] It should be noted that a geared motor is an integrated unit of a speed reducer and a motor, while a servo motor is an engine that controls the operation of mechanical components in a servo system; it is an auxiliary motor with indirect speed change. Servo motors can control speed with very high positional accuracy, converting voltage signals into torque and speed to drive the controlled object. The rotor speed of a servo motor is controlled by the input signal and can respond quickly. In automatic control systems, it is used as an actuator and has characteristics such as a small electromechanical time constant and high linearity. It can convert received electrical signals into angular displacement or angular velocity output on the motor shaft. Servo motors are divided into two main categories: DC and AC servo motors. Their main characteristic is that there is no self-rotation when the signal voltage is zero, and the speed decreases uniformly as the torque increases.

[0083] Setting the first drive component 22 as a geared motor can effectively ensure that the rotational speed of the moving component 23 is within the required speed range, thus preventing the moving component 23 from rotating too fast or too slow.

[0084] By setting the second drive component 24 as a servo motor, the rotation of the commutator 25 can be accurately controlled, thereby enabling the other end of the commutator 25 to be precisely connected to any sewage channel 212.

[0085] It is worth noting that the second driving component 24 of this application can be a servo motor or other power mechanism capable of precise rotation and positioning. Those skilled in the art can choose according to their needs.

[0086] Specifically, the cylinder 1 and the annular filter screen 3 are coaxially arranged.

[0087] It should be noted that the cylinder 1 and the annular filter screen 3 can be coaxially arranged or non-coaxially arranged. Those skilled in the art can choose according to their needs. However, in this application, the cylinder 1 and the annular filter screen 3 are preferably coaxially arranged.

[0088] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

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