A plate filter device

Abstract

The utility model relates to liquid filtering technical field especially is involved in a kind of plate filter device.The device includes pollution discharge mechanism and filter plate;Pollution discharge mechanism includes shell, agitating paddle and pollution discharge valve;Shell has feed inlet, liquid outlet and pollution discharge port;Filter plate is connected in liquid outlet, for intercepting flocculation liquid flocculation block to shell inside;Agitating paddle is rotatably installed in shell, and can rotate around its own axis.The plate filter device provided by the utility model rotates around its own axis by agitating paddle when using, to agitate and break up flocculation block in shell, and flocculation block is discharged from shell in turn after breaking up through pollution discharge port and pollution discharge valve, effectively prevent flocculation block accumulation and cause filter plate to be blocked.

Description

Technical Field

[0001] This utility model relates to the field of liquid filtration technology, and in particular to a plate filter device. Background Technology

[0002] In water treatment and chemical production processes, flocculants are key agents used to promote the aggregation and sedimentation of suspended particles in water. However, during the preparation and addition of flocculants, incompletely dissolved flocculent clumps are often generated due to insufficient dissolution or uneven mixing. These flocculent clumps flow to the delivery pump along with the flocculant.

[0003] To prevent flocculent clumps from entering the delivery pump and affecting its safe operation, a filter device is usually installed at the pump inlet to separate the flocculent clumps from the liquid flocculant. However, because the flocculent clumps collide and agglomerate with the flow of the liquid flocculant, and the filter device is in a low-shear environment, the flocculent clumps can easily clog the filter device, thus affecting the stability of the flocculant delivery. Utility Model Content

[0004] This invention provides a plate-type filter device to solve the problem that flocculent clumps can easily clog the filter device because they collide and aggregate with each other as the liquid flocculant flows, and the filter device is in a low-shear environment.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: A plate filter device: The system includes a sewage discharge mechanism and a filter plate. The sewage discharge mechanism includes a housing, an agitator, and a sewage discharge valve. The housing has a feed inlet, a liquid outlet, and a sewage discharge outlet. The filter plate is connected to the liquid outlet and is used to trap flocculent clumps in the flocculated liquid into the housing. The agitator is rotatably installed inside the housing and can rotate around its own axis to agitate and break up the flocculent clumps inside the housing. The sewage discharge valve is connected to the sewage discharge outlet and is used to control the discharge of the broken flocculent clumps from the housing.

[0006] Furthermore, it also includes a backflushing mechanism; the backflushing mechanism includes a backflushing valve and a backflushing pipe; the backflushing valve is connected to the backflushing pipe to control the backflushing fluid to enter the backflushing pipe; the backflushing pipe is connected to the side of the filter plate away from the housing, so that the backflushing fluid flows back into the housing through the filter plate to remove the flocculent clumps attached to the filter plate.

[0007] Furthermore, the backflushing mechanism also includes a pressure sensor; the pressure sensor is installed in the backflushing pipe to monitor the pressure inside the backflushing pipe; the pressure sensor is configured with a backflushing detection mode; when the backflushing detection mode is activated, the pressure sensor monitors the pressure of the backflushing fluid inside the backflushing pipe to determine whether the flow of the filter plate is obstructed.

[0008] Furthermore, the backflushing mechanism also includes a shut-off valve; the shut-off valve is connected to the end of the backflushing pipe away from the filter plate, and is used to control the connection and disconnection between the backflushing pipe and the external pipeline.

[0009] Furthermore, the sewage discharge mechanism also includes an agitation structure; the agitation structure includes the agitator and a drive unit; the housing also has a mounting port; the drive unit is mounted in the mounting port, and its output end is connected to the agitator to drive the agitator to rotate around its own axis.

[0010] Furthermore, a liquid flow channel is formed inside the housing, connecting the feed inlet and the liquid outlet; the mounting port is located above the liquid flow channel and is connected to the liquid flow channel through an upwardly extending mounting channel; the agitator includes a stirring shaft and blades connected to one end of the stirring shaft; the blades are located inside the mounting channel and do not extend into the liquid flow channel to reduce interference with the flowing flocculant in the liquid flow channel.

[0011] Furthermore, a liquid flow channel is formed inside the housing, connecting the feed inlet and the liquid outlet; the drain outlet is located below the liquid flow channel and is connected to the liquid flow channel through a downwardly extending drain channel; the agitator includes a stirring shaft and blades connected to one end of the stirring shaft; the blades are located inside the drain channel to push the crushed flocculent clumps out through the drain channel.

[0012] Furthermore, a liquid flow channel is formed within the housing, connecting the feed inlet and the outlet; the drain outlet is located below the liquid flow channel and communicates with the liquid flow channel through a downwardly extending drain channel; the agitator includes a stirring shaft and blades connected to one end of the stirring shaft; the blades are located within the liquid flow channel and above the drain channel, so as to push the flocculent clumps to be discharged into the drain channel during the process of breaking them up.

[0013] Furthermore, the pressure sensor is also equipped with a liquid supply detection mode; in the liquid supply detection mode, the pressure sensor is used to detect the pressure of the flocculant flowing through the backflushing pipe; when the flocculant pressure is lower than the threshold, the drive unit drives the agitator to rotate, so that the flocculent clumps adsorbed on the filter plate are peeled off and broken.

[0014] Furthermore, the sewage discharge mechanism also includes a viewing window; the housing also has an observation port; the viewing window is installed at the observation port for observing the degree of accumulation of flocculent clumps inside the housing.

[0015] The beneficial effects of this novel plate filter device are analyzed as follows: The device includes a sewage discharge mechanism and a filter plate; the sewage discharge mechanism includes a housing, an agitator, and a sewage discharge valve; the housing has a feed inlet, a liquid outlet, and a sewage discharge outlet; the filter plate is connected to the liquid outlet and is used to trap flocculent clumps in the flocculated liquid into the housing; the agitator is rotatably installed inside the housing and can rotate around its own axis to agitate and break up the flocculent clumps inside the housing; the sewage discharge valve is connected to the sewage discharge outlet and is used to control the discharge of the broken flocculent clumps inside the housing.

[0016] The plate filter device provided by this utility model uses a stirring paddle to rotate around its own axis to agitate and break up the flocculent clumps inside the shell. After being broken up, the flocculent clumps are discharged from the shell through the drain port and drain valve in sequence, effectively preventing the accumulation of flocculent clumps from clogging the filter plate, thus solving the problem of flocculent clumps clogging the filter device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the plate filter device provided in this embodiment of the utility model; Figure 2 A front view of the plate filter device provided in this embodiment of the utility model; Figure 3 A schematic diagram of the combined structure of the sewage discharge mechanism and filter plate provided in this embodiment of the utility model; Figure 4 A cross-sectional view of the first embodiment of the sewage discharge mechanism provided in this utility model; Figure 5 A cross-sectional view of the second embodiment of the sewage discharge mechanism provided in this utility model; Figure 6 A cross-sectional view of the third embodiment of the sewage discharge mechanism provided in this utility model; Figure 7 This utility model provides a schematic diagram of the recoil mechanism.

[0019] icon: 100 - Drainage mechanism; 110 - Housing; 111 - Liquid flow channel; 112 - Installation channel; 113 - Drainage channel; 120 - Agitation structure; 121 - Agitator; 122 - Drive unit; 130 - Drainage valve; 140 - Viewing window; 200 - Filter plate; 300 - Backflushing mechanism; 310 - Backflushing valve; 320 - Backflushing pipe; 330 - Pressure sensor; 340 - Shut-off valve. Detailed Implementation

[0020] Because flocculent clumps collide and agglomerate with the flow of liquid flocculant, and the filter device is in a low-shear environment, the flocculent clumps can easily clog the filter device, thus affecting the stability of flocculant delivery.

[0021] In view of this, this solution provides a plate filter device, including a sewage discharge mechanism 100 and a filter plate 200.

[0022] The following combination Figures 1-7 The structure and shape of the plate filter device are described in detail: The sewage discharge mechanism 100 includes a housing 110, an agitator 121, and a sewage discharge valve 130. The housing 110 has a feed inlet, a liquid outlet, and a sewage discharge outlet. A filter plate 200 is connected to the liquid outlet and is used to trap flocculent clumps in the flocculated liquid into the housing 110. The agitator 121 is rotatably installed inside the housing 110 and can rotate around its own axis to agitate and break the flocculent clumps inside the housing 110. The sewage discharge valve 130 is connected to the sewage discharge outlet and is used to control the discharge of the broken flocculent clumps inside the housing 110.

[0023] In this embodiment, the agitator 121 rotates around its own axis to agitate and break up the flocculent clumps inside the housing 110. After being broken up, the flocculent clumps are discharged from the housing 110 through the drain port and the drain valve 130 in sequence, effectively preventing the filter plate 200 from clogging due to the accumulation of flocculent clumps.

[0024] Because flocculant is considered an incompressible fluid within the normal operating pressure range, the pressure change of flocculant has a negligible impact on its flow measurement accuracy. Therefore, the above operations can be performed in flocculant supply scenarios, flocculant supply intermittent scenarios, and line breakage maintenance scenarios.

[0025] In order to effectively clean the flocculent clumps adhering to the filter plate 200: like Figure 1 , Figure 2 and Figure 7As shown, it also includes a backflushing mechanism 300; the backflushing mechanism 300 includes a backflushing valve 310 and a backflushing pipe 320; the backflushing valve 310 is connected to the backflushing pipe 320 to control the backflushing liquid to enter the backflushing pipe 320; the backflushing pipe 320 is connected to the side of the filter plate 200 away from the housing 110, so that the backflushing liquid flows back into the housing 110 through the filter plate 200 to remove the flocculent clumps attached to the filter plate 200.

[0026] In this embodiment, when cleaning the plate filter device in the intermittent flocculant supply scenario and the disconnection maintenance scenario, the backflush valve 310 is opened so that the backflush liquid enters the backflush pipe 320 through the backflush valve 310. The backflush liquid in the backflush pipe 320 enters the housing 110 through the filter plate 200. During this process, the flocculent clumps adsorbed on the filter plate 200 are detached. The detached flocculent clumps are broken by the rotating agitator 121. Then, the backflush liquid drives the broken flocculent clumps in the housing 110 to be discharged through the drain valve 130.

[0027] In order to determine the cleaning status of the flocculent clumps attached to the filter plate 200: like Figure 7 As shown, the backflushing mechanism 300 also includes a pressure sensor 330; the pressure sensor 330 is installed in the backflushing pipe 320 and is used to monitor the pressure inside the backflushing pipe 320; the pressure sensor 330 is configured with a backflushing detection mode; when the backflushing detection mode is in operation, the pressure sensor 330 monitors the pressure of the backflushing fluid in the backflushing pipe 320 to determine whether the flow state of the filter plate 200 is obstructed.

[0028] To prevent backflushing fluid from entering the downstream pipeline within the backflushing pipe 320, and to avoid backflushing fluid flowing into the downstream pipeline, the following assessment is made regarding the removal status of flocculent clumps adhering to the filter plate 200: like Figure 7 As shown, the backflushing mechanism 300 also includes a shut-off valve 340; the shut-off valve 340 is connected to the end of the backflushing pipe 320 away from the filter plate 200, and is used to control the connection and disconnection between the backflushing pipe 320 and the external pipeline.

[0029] In this embodiment, the shut-off valve 340 disconnects the end of the backflush pipe 320 away from the filter plate 200 from the downstream pipeline. Then, the backflush liquid enters the backflush pipe 320 through the backflush valve 310. At this time, the backflush pipe 320 forms a one-way passage through the filter plate 200 to the housing 110 with the cooperation of the shut-off valve 340. Then, the backflush liquid in the backflush pipe 320 enters the housing 110 through the filter plate 200 under pressure. During this process, the pressure sensor 330 detects the pressure of the backflush liquid in the backflush pipe 320 in real time. Based on the pressure detection result of the pressure sensor 330, the flow state of the filter plate 200 is determined, thereby determining the cleaning status of the flocculent clumps attached to the filter plate 200.

[0030] To drive the agitator 121 to rotate about its own axis: The sewage discharge mechanism 100 also includes an agitation structure 120; the agitation structure 120 includes an agitator 121 and a drive unit 122; the housing 110 also has a mounting port; the drive unit 122 is mounted in the mounting port, and its output end is connected to the agitator 121 in a transmission connection to drive the agitator 121 to rotate around its own axis.

[0031] The structure of the drive unit 122 is as follows: The drive unit 122 includes a drive motor and a sealing frame. The drive motor is mounted on the sealing frame, and its output end is connected to the input end of the sealing frame. The sealing frame is mounted on the mounting port of the housing 110, and its output end is connected to the agitator 121. The model of the sealing frame includes, but is not limited to, TJA1-B1(X3).

[0032] In this embodiment, the drive motor drives the agitator 121 to rotate around its own axis through the sealing frame. During this process, the sealing frame seals the mounting port of the housing 110 to prevent liquid inside the housing 110 from leaking from the mounting port.

[0033] The first embodiment of the sewage discharge mechanism 100 is as follows: like Figure 4 As shown, a liquid flow channel 111 is formed inside the housing 110, connecting the inlet and the outlet; the mounting port is located above the liquid flow channel 111 and is connected to the liquid flow channel 111 through an upwardly extending mounting channel 112; the agitator 121 includes a stirring shaft and blades connected to one end of the stirring shaft; the blades are located inside the mounting channel 112 and do not extend into the liquid flow channel 111, so as to reduce interference with the flowing flocculant inside the liquid flow channel 111.

[0034] In this embodiment, the stirring shaft and blades of the agitator 121 are both located inside the installation channel 112 and do not extend into the liquid flow channel 111 that connects the feed inlet and the liquid outlet, so that the rotating agitator 121 breaks up the flocculent clumps in the installation channel 112. At the same time, the agitator 121 drives the flocculent liquid in the housing 110 to rotate, so as to form a high shear environment in the housing 110, thereby reducing the interference to the flowing flocculent liquid in the liquid flow channel 111 while breaking up the flocculent gel.

[0035] The second embodiment of the sewage discharge mechanism 100 is as follows: like Figure 5 As shown, a liquid flow channel 111 is formed inside the shell 110, which connects the feed port and the liquid outlet; the drain port is located below the liquid flow channel 111 and is connected to the liquid flow channel 111 through a downwardly extending drain channel 113; the agitator 121 includes an agitator shaft and a blade connected to one end of the agitator shaft; the blade is located inside the drain channel 113 to push the crushed flocculent clumps out through the drain channel 113.

[0036] In this embodiment, the blades of the agitator 121 are located inside the drain channel 113, while the stirring shaft of the agitator 121 is located inside the liquid flow channel 111. This allows the rotating agitator 121 to break up the flocculent gel in the drain channel 113 and apply a pushing force to the broken flocculent gel, thereby pushing the broken flocculent gel to pass through the drain channel 113 and the drain outlet in sequence and be discharged from the drain valve 130. As the flocculent gel in the drain channel 113 is discharged, the flocculent gel in the liquid flow channel 111 flows into the drain channel 113 and is broken up and discharged by the agitator 121.

[0037] The third embodiment of the sewage discharge mechanism 100 is as follows: like Figure 6 As shown, a liquid flow channel 111 is formed inside the shell 110, connecting the feed inlet and the liquid outlet; the drain outlet is located below the liquid flow channel 111 and is connected to the liquid flow channel 111 through a downwardly extending drain channel 113; the agitator 121 includes an agitator shaft and blades connected to one end of the agitator shaft; the blades are located inside the liquid flow channel 111 and above the drain channel 113, so as to push the flocculent clumps to be discharged into the drain channel 113 during the process of breaking up the flocculent clumps.

[0038] In this embodiment, by placing the blades of the agitator 121 inside the liquid flow channel 111, the blades of the agitator 121 block some of the flocculent clumps in the flocculated liquid. The blocked flocculent clumps are guided into the drain channel 113 by the blades, thereby slowing down the rate at which the flocculent clumps clog the filter plate 200. When it is necessary to break and discharge the flocculent gel inside the housing 110, the blades are placed above the drain channel 113 to break the flocculent gel inside the liquid flow channel 111 while applying a pushing force to the drain channel 113, so that the flocculent gel inside the drain channel 113 is broken and output through the drain port and drain valve 130.

[0039] In order to determine the clogging status of filter plate 200 and perform online treatment: like Figure 7 The pressure sensor 330 shown is also equipped with a liquid supply detection mode; when the liquid supply detection mode is in operation, the pressure sensor 330 is used to detect the pressure of the flocculant flowing through the backflushing pipe 320; when the flocculant pressure is lower than the threshold, the drive unit 122 drives the agitator 121 to rotate, so that the flocculent clumps adsorbed on the filter plate 200 are peeled off and broken.

[0040] In order for the drive unit 122 to drive the agitator 121 to rotate when the pressure sensor 330 detects that the pressure of the flocculant in the backflush pipe 320 is lower than the threshold: It also includes a controller; a pressure sensor 330 is electrically connected to the controller for transmitting pressure data to the controller; the controller is electrically connected to the drive unit 122 for controlling the opening and closing of the drive unit 122.

[0041] In this embodiment, the pressure sensor 330 detects the pressure of the flocculant flowing through the backflushing pipe 320 in real time. Since the pressure of the flocculant flowing through the backflushing pipe 320 will decrease as the filter plate 200 becomes clogged, the controller determines the clogging status of the filter plate 200 based on the pressure detected by the pressure sensor 330. When the pressure sensor 330 detects that the pressure of the flocculant in the backflushing pipe 320 is lower than the threshold, the controller controls the drive unit 122 to turn on, so that the drive unit 122 drives the agitator 121 to rotate around its own axis, thereby forming turbulence in the housing 110, so that the flocculent clumps on the filter plate 200 are peeled off and broken.

[0042] The above operation is based on the third embodiment of the sewage discharge mechanism 100 and is applicable to flocculant supply scenarios and flocculant supply intermittent scenarios.

[0043] In order to visually determine the degree of accumulation of flocculent clumps inside shell 110: like Figure 7 As shown, the sewage discharge mechanism 100 also includes a viewing window 140; the housing 110 also has an observation port; the viewing window 140 is installed at the observation port and is used to observe the degree of accumulation of flocculent clumps inside the housing 110.

[0044] In this embodiment, by opening an observation port on the surface of the shell 110, the degree of accumulation of flocculent clumps inside the shell 110 can be observed, and then it can be selected whether to clean the flocculent clumps inside the shell 110, thereby reducing the loss of flocculent liquid caused by cleaning; by setting a viewing window 140 in the observation port, the liquid inside the shell 110 can be prevented from flowing out while maintaining the observation function of the observation port.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A plate filter device, characterized in that: Includes a sewage discharge mechanism (100) and a filter plate (200); The sewage discharge mechanism (100) includes a housing (110), an agitator (121), and a sewage discharge valve (130). The housing (110) has a feed inlet, a liquid outlet and a drain outlet; The filter plate (200) is connected to the liquid outlet and is used to trap the flocculent clumps in the flocculated liquid into the shell (110); The agitator (121) is rotatably mounted inside the housing (110) and can rotate around its own axis to agitate and break up the flocculent clumps inside the housing (110); The drain valve (130) is connected to the drain port and is used to control the discharge of the broken flocculent clumps inside the housing (110).

2. The plate filter device according to claim 1, characterized in that: It also includes a recoil mechanism (300); The recoil mechanism (300) includes a recoil valve (310) and a recoil pipe (320). The backflush valve (310) is connected to the backflush pipe (320) to control the backflush fluid to enter the backflush pipe (320). The backflush pipe (320) is connected to the side of the filter plate (200) away from the housing (110), so that the backflush liquid flows back into the housing (110) through the filter plate (200) to remove the flocculent clumps attached to the filter plate (200).

3. The plate filter device according to claim 2, characterized in that: The recoil mechanism (300) also includes a pressure sensor (330); The pressure sensor (330) is installed in the backflush tube (320) to monitor the pressure inside the backflush tube (320); The pressure sensor (330) is equipped with a backflush detection mode; During the backflush detection mode, the pressure sensor (330) monitors the pressure of the backflush fluid in the backflush pipe (320) to determine whether the flow of the filter plate (200) is obstructed.

4. The plate filter device according to claim 3, characterized in that: The recoil mechanism (300) also includes a stop valve (340). The shut-off valve (340) is connected to the end of the backflush pipe (320) away from the filter plate (200) and is used to control the connection and disconnection between the backflush pipe (320) and the external pipeline.

5. The plate filter device according to claim 4, characterized in that: The sewage discharge mechanism (100) also includes an agitation structure (120). The agitation structure (120) includes the agitator (121) and the drive unit (122). The housing (110) also has a mounting port; The drive unit (122) is installed in the mounting port, and its output end is connected to the agitator (121) for driving the agitator (121) to rotate around its own axis.

6. The plate filter device according to claim 5, characterized in that: A liquid flow channel (111) is formed inside the housing (110) to connect the feed inlet and the liquid outlet. The mounting port is located above the liquid flow channel (111) and is connected to the liquid flow channel (111) through an upwardly extending mounting channel (112); The agitator (121) includes an agitator shaft and blades connected to one end of the agitator shaft; The blade is located within the installation channel (112) and does not extend into the liquid flow channel (111) to reduce interference with the flowing flocculant in the liquid flow channel (111).

7. The plate filter device according to claim 5, characterized in that: A liquid flow channel (111) is formed inside the housing (110) to connect the feed inlet and the liquid outlet. The drain outlet is located below the liquid flow channel (111) and is connected to the liquid flow channel (111) through a downwardly extending drain channel (113); The agitator (121) includes an agitator shaft and blades connected to one end of the agitator shaft; The blades are located inside the sewage discharge channel (113) to push the broken flocculent clumps out through the sewage discharge channel (113).

8. The plate filter device according to claim 5, characterized in that: A liquid flow channel (111) is formed inside the housing (110) to connect the feed inlet and the liquid outlet. The drain outlet is located below the liquid flow channel (111) and is connected to the liquid flow channel (111) through a downwardly extending drain channel (113); The agitator (121) includes an agitator shaft and blades connected to one end of the agitator shaft; The blade is located within the liquid flow channel (111) and above the sewage discharge channel (113) to push the flocculent clumps into the sewage discharge channel (113) during the breaking up of the clumps.

9. The plate filter device according to claim 8, characterized in that: The pressure sensor (330) is also equipped with a liquid supply detection mode; When the liquid supply detection mode is in operation, the pressure sensor (330) is used to detect the pressure of the flocculant flowing through the backflush pipe (320); When the pressure of the flocculant is below the threshold, the drive unit (122) drives the agitator (121) to rotate, so that the flocculent clumps adsorbed on the filter plate (200) are peeled off and broken.

10. The plate filter device according to claim 9, characterized in that: The sewage discharge mechanism (100) also includes a viewing window (140); The housing (110) also has an observation port; The viewing window (140) is installed at the observation port to observe the degree of accumulation of flocculent clumps inside the shell (110).

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