Sewage treatment device and treatment method for textile printing and dyeing equipment

Abstract

The invention relates to the field of sewage treatment, in particular to a sewage treatment device and method for textile printing and dyeing equipment, and the device comprises a filtering unit which comprises a container, a partition plate, a sealing plate and a flushing assembly; a filter plate with filter holes is arranged in the container, and the inner space of the container is divided into an upper chamber and a lower chamber by the filter plate; the lower cavity is divided into a pressurizing cavity and a water outlet cavity through a partition plate. A water guide hole is formed in the partition plate; the sealing plate can be driven to move between an opening position and a closing position relative to the partition plate, and the sealing plate is provided with a water guide hole in the closing position; at least part of the water guide hole is communicated with the pressurizing chamber and the water outlet chamber at the opening position; the water filling assembly is used for continuously filling water into the pressurizing cavity when the sealing plate is located at the closing position; impurities in the filter holes are reversely flushed out through the water pressure of water in the pressurized water cavity, and compared with a traditional brush cleaning mode, the blockage removing effect is undoubtedly more obvious through the scheme.

Description

Technical Field

[0001] The present application relates to the field of sewage treatment, and in particular to a sewage treatment device and method for textile printing and dyeing equipment. Background Art

[0002] In the textile printing and dyeing industry, a large amount of printing and dyeing wastewater is generated. In order to reduce the impact on the environment, these wastewaters usually need to be treated to meet the standards before they can be discharged. In the wastewater treatment process, the filtration process is one of the important steps, which is mainly to filter out the solid debris in the wastewater. The filtered wastewater is then subjected to subsequent purification treatment.

[0003] In the related art, some sewage treatment devices use filter plates with filter holes to filter sewage. As the filtration proceeds, the filter holes of the filter plates are easily clogged, resulting in reduced filtration effect. Therefore, the filter plates need to be cleaned regularly or irregularly.

[0004] Among them, in order to clean the filter plate, some devices will set a brush or other structure at the filter plate. When cleaning is needed, the filter plate is cleaned by the brush. However, this brush cleaning method is difficult to clean out impurities blocked in the filter holes, and therefore needs to be improved. Summary of the Invention

[0005] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of this application is to provide a wastewater treatment device for textile printing and dyeing equipment.

[0006] To achieve the above objectives, this application provides the following technical solutions.

[0007] In one aspect, the present application provides a wastewater treatment device for textile printing and dyeing equipment, comprising a filter unit, wherein the filter unit comprises: A container, wherein a filter plate having filter holes is provided in the container, and the internal space of the container is divided by the filter plate into an upper chamber located above the filter plate and a lower chamber located below the filter plate; a partition disposed in the lower chamber, the lower chamber being divided into a pressurized chamber and a water outlet chamber by the partition; the partition being provided with one or more water guide holes communicating with the pressurized chamber and the water outlet chamber; A sealing assembly comprising a sealing plate for sealing the water guide hole, wherein the sealing plate can be driven relative to the partition plate between an open position and a closed position. In the closed position, the sealing plate seals the water guide hole; in the open position, the water guide hole at least partially communicates with the pressurized chamber and the water outlet chamber; The water filling assembly is used to continuously flow water into the pressurized chamber when the sealing plate is in the closed position.

[0008] As an optional embodiment of the present application, the container includes a fixed container and a movable container; the filter plate is fixed to the top of the fixed container so that the lower chamber is formed in the fixed container; the top of the movable container is open to form an open end; the open end of the movable container is provided with a water guide plate parallel to the filter plate, and a circle of sewage outlets surrounding the open end of the movable container is formed between the water guide plate and the open end of the movable container; the sealing plate is located in the pressurized chamber; The movable container can move vertically between a first position and a second position relative to the fixed container; in the first position, the movable container at least partially extends upward from the filter plate, and the portion of the movable container extending from the filter plate and the filter plate together form an upper chamber, and the sewage outlet is vertically higher than the filter plate by a certain distance; in the second position, the upper edge of the sewage outlet is higher than the upper surface of the filter plate, and the lower edge of the sewage outlet is not higher than the upper surface of the filter plate.

[0009] As an optional embodiment of the present application, the sealing assembly also includes a linkage member, which is used to realize the linkage between the movable container and the sealing plate. The linkage member is constructed so that when the movable container is in the first position, the linkage member drives the sealing plate into the open position, and when the movable container is in the second position, the linkage member drives the sealing plate into the closed position.

[0010] As an optional embodiment of the present application, the linkage member includes a guide rod and an elastic member. The guide rod is vertically movably provided on the filter plate. One end of the guide rod is fixed to the sealing plate, and the other end extends upward from the filter plate to form a pressure-bearing end for the water guide plate to press against. The elastic member is used to provide elastic force to drive the filter plate to have a tendency to move toward the open position. When the movable container is in the first position, the sealing plate is reset to the open position under the elastic force of the elastic member; When the movable container is in the second position, the water guide plate presses downward against the pressed end of the guide rod so that the guide rod overcomes the elastic force of the elastic member and pushes the sealing plate into the closed position.

[0011] As an optional embodiment of the present application, the sealing plate is arranged in the water outlet chamber, and the sealing assembly further includes a power component, which is used to drive the sealing plate to move vertically between an open position and a closed position.

[0012] As an optional embodiment of the present application, in the closed position, the sealing plate presses against the partition to close the water guide hole, and in the open position, the sealing plate forms a gap between the sealing plate and the partition in the vertical direction.

[0013] As an optional embodiment of the present application, the movable container is movably inserted into the fixed container in the vertical direction, and a first seal is provided between the fixed container and the movable container, surrounding the fixed container along the circumference of the fixed container; and / or a second seal is provided between the sealing plate and the partition, and in the closed position, the second seal surrounds the circumference of the water guide hole and is squeezed between the sealing plate and the partition.

[0014] As an optional embodiment of the present application, a driving component is provided between the fixed container and the movable container, and the driving component is used to drive the movable container to move vertically between a first position and a second position relative to the fixed container.

[0015] As an optional embodiment of the present application, the pressurized chamber includes a water inlet; the water filling assembly includes a first water pump, the water outlet of the first water pump is connected to the water inlet, and the water inlet of the first water pump is connected to an external water source.

[0016] On the other hand, the present application also provides a sewage treatment method, including a filtration step, characterized in that the filtration step is performed using the above-mentioned textile printing and dyeing equipment sewage treatment device.

[0017] Compared with the prior art, this application has the following beneficial effects: In the process of clearing the filter holes, this solution actually uses the water pressure in the pressurized water chamber to flush out the impurities in the filter holes in reverse. Compared with the traditional brush cleaning method, this solution is undoubtedly more effective in clearing the filter holes.

[0018] In addition, it is worth mentioning that in this solution, the entire lower chamber is not used as the pressurized chamber, but a part of the lower chamber is divided as the pressurized chamber. The significance of this is that the latter has a smaller volume than the former, so that the amount of water required to fill the pressurized chamber is less, and a small volume space can more easily generate a higher water pressure.

[0019] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the exemplary embodiments of the present application will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, in which: In the drawings, the same or corresponding reference numerals denote the same or corresponding parts.

[0021] Figure 1 Shows a schematic diagram of the structure of this application; Figure 2 Shows a cross section of the application Figure 1 , wherein the movable container is in a first position and the sealing plate is in an open position.

[0022] Figure 3 Shows a cross section of the application Figure 2 , wherein the movable container is in the second position and the sealing plate is in the closed position.

[0023] Figure 4 Shows a schematic structural diagram of the plugging assembly of the present application; Figure 5 A partial cross-sectional view showing the location of the connecting rod of the present application; Figure 6 A structural diagram of Example 2 of the present application is shown.

[0024] L1, first sealing ring; L2, second sealing member; L3, third sealing ring; M, post-processing module; 1. Container; 11. Fixed container; 111. First step; 112. Drain hole; 113. Second water pump; 12. Movable container; 121. Second step; 122. Water guide plate; 123. Connecting rod; 1231. Stopper; 1232. Nut; 124. Drain port; 125. Drain channel; 13. Upper chamber; 14. Lower chamber; 141. Pressurized chamber; 142. Water outlet chamber; 15. First hydraulic cylinder; 2. Partition; 21. Water guide hole; 22. Water inlet hole; 3. Filter plate; 31. Filter hole; 4. Blocking assembly; 41. Closing plate; 42. Linkage member; 421. Guide rod; 422. Spring; 43. Second hydraulic cylinder; 43. Second hydraulic cylinder; 5. Water filling assembly; 51. First water pump; 52. Valve. DETAILED DESCRIPTION

[0025] In order to make the purpose, features, and advantages of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0026] Example 1 Reference Figures 1-6As shown, this embodiment provides a wastewater treatment device for textile printing and dyeing equipment (hereinafter referred to as wastewater), including a filter unit for filtering wastewater, the filter unit including a container 1, a partition 2, a blocking component 4 and a water filling component 5. Each component is described in detail below.

[0027] like Figure 2 As shown, a filter plate 3 with filter holes 31 is provided in the container 1 . In some embodiments, the filter plate 3 is horizontally arranged inside the container 1 .

[0028] In addition, the internal space of the container 1 is divided by the filter plate 3 to form an upper chamber 13 located on the upper side of the filter plate 3 and a lower chamber 14 located on the lower side of the filter plate 3; the upper chamber 13 and the lower chamber 14 are connected through the filter holes 31 of the filter plate 3, and the upper chamber 13 is equivalent to the water inlet chamber. When in use, the sewage to be filtered is introduced into the upper chamber 13, and after the sewage is filtered through the filter holes 31 of the filter plate 3, it flows into the lower chamber 14 through the filter holes 31 to achieve filtration, wherein the filter residue remains on the upper surface of the filter plate 3 after being filtered by the filter plate 3, and is subject to subsequent cleaning.

[0029] The partition 2 is horizontally arranged in the lower chamber 14, and the lower chamber 14 is divided by the partition 2 to form a pressurized chamber 141 and a water outlet chamber 142, that is, the chamber formed between the partition 2 and the filter plate 3 serves as the pressurized chamber 141; the chamber on the lower side of the partition 2 constitutes the water outlet chamber 142.

[0030] The partition plate 2 is provided with one or more water guide holes 21 communicating with the pressurized chamber 141 and the water outlet chamber 142, for example Figure 4 As shown, this embodiment specifically shows a situation where a water guide hole 21 is opened in the center of the partition 2. This embodiment is specifically described below using this form as an example.

[0031] The blocking assembly 4 includes a blocking plate 41 for blocking the water guide hole 21 . The blocking plate 41 can be driven to move between an open position and a closed position relative to the partition 2 .

[0032] When the sealing plate 41 is in the closed position, Figure 3 In the state shown, the sealing plate 41 blocks the water guide hole 21. For example, in some embodiments, in the closed position, the sealing plate 41 presses against the partition 2 to close the water guide hole 21, so that the pressurized chamber 141 is cut off from the connection with the water outlet chamber 142, that is, the water in the pressurized chamber 141 cannot flow into the water outlet chamber 142 through the water guide hole 21.

[0033] In order to ensure the sealing performance of the sealing plate 41 in the closed position to block the water guide hole 21, in some embodiments, a second sealing member L2 is provided between the sealing plate 41 and the partition 2. In the closed position, Figure 3As shown, the second sealing member L2 surrounds the circumference of the water guide hole 21 and is squeezed between the sealing plate 41 and the partition 2. The second sealing member L2 can be an O-ring, which can be fixed on the bottom surface of the sealing plate 41 or fixed on the upper surface of the partition 2 to surround the water guide hole 21.

[0034] When the sealing plate 41 is in the open position, Figure 2 In the state shown, the water guide hole 21 is at least partially connected to the pressurized chamber 141 and the water outlet chamber 142. For example, in some embodiments, Figure 2 As shown, in the open position, the sealing plate 41 forms a gap with the partition 2 in the vertical direction, so that the pressurized chamber 141 can communicate with the water outlet chamber 142 through the aforementioned gap and the water guide hole 21. That is, the water in the pressurized chamber 141 can flow into the water outlet chamber 142 through the aforementioned gap and the water guide hole 21. In this embodiment, the vertical direction can be understood as the height direction of the container 1.

[0035] The water filling assembly 5 is used to continuously flow water into the pressurized chamber 141 when the sealing plate 41 is in the closed position.

[0036] When it is necessary to filter the sewage, the sealing plate 41 is driven to enter the open position (i.e. Figure 2 As shown in the state, the sewage to be filtered is passed into the upper chamber 13. When the sewage passes through the filter plate 3, it is filtered by the filter plate 3, so that the filter residue remains on the upper surface of the filter plate 3. The filtrate flows downward from the filter hole 31, for example, into the pressurized chamber 141, and then flows into the water outlet chamber 142 through the water guide hole 21 to complete the filtration.

[0037] When the filter holes 31 of the filter plate 3 become clogged, resulting in a decrease in filtration efficiency, the flow of sewage into the upper chamber 13 is stopped, and the sealing plate 41 is switched to the closed position (i.e. Figure 3 As shown in the state), the water filling component 5 is then turned on, so that the flushing component continues to pass water with a certain water pressure into the pressurized chamber 141. When the pressurized chamber 141 is full of water, as the water filling component 5 continues to fill water, the water in the pressurized chamber 141 will generate a certain water pressure. Under the action of the water pressure, the water in the pressurized chamber 141 will flow upward through the filter hole 31 to the upper chamber 13. In this process, impurities blocked in the filter hole 31 will be pushed out of the filter hole 31 under the action of the water pressure, thereby realizing the clearing action of the filter hole 31, thereby reducing the blockage of the filter hole 31.

[0038] It can be seen that in the process of clearing the filter hole 31, the water pressure in the pressurized water chamber is actually used to flush out the impurities in the filter hole 31 in the reverse direction. Compared with the traditional brush cleaning method, this solution is undoubtedly more effective in clearing the blockage.

[0039] In addition, it is worth mentioning that in this solution, the entire lower chamber 14 is not used as the pressurized chamber 141, but a part of the lower chamber 14 is divided out as the pressurized chamber 141. The significance of this is that the latter has a smaller volume than the former, so that the amount of water required to fill the pressurized chamber 141 is less, and a space with a small volume can more easily generate a higher water pressure.

[0040] In order to remove the filter residue remaining on the upper surface of the filter plate 3 during the unclogging process of the filter holes 31, in some embodiments, the container 1 is improved: like Figure 1 As shown, the container 1 includes a fixed container 11 and a movable container 12, wherein the shapes of the fixed container 11 and the movable container 12 can be designed according to actual needs. For example, in this embodiment, the fixed container 11 and the movable container 12 are both cylindrical.

[0041] Among them, such as Figure 2 As shown, the top of the fixed container 11 is open, and the filter plate 3 is fixed at the top opening of the fixed container 11. Preferably, the upper surface of the filter plate 3 is flush with the top opening of the fixed container 11; the filter plate 3 and the fixed container 11 are enclosed to form a lower chamber 14.

[0042] In some embodiments, a drain hole 112 is formed on the bottom plate of the fixed container 11 to discharge the filtrate (ie, filtered sewage) in the lower chamber 14 out of the lower chamber 14 through the drain hole 112 .

[0043] The top opening of the movable container 12 constitutes an open end. In some embodiments, the lower end of the movable container 12 is also an open structure. The movable container 12 is movably inserted into the outside of the fixed container 11 in the vertical direction.

[0044] The open end of the movable container 12 is provided with a water guide plate 122 parallel to the filter plate 3, and a sewage outlet 124 is formed between the water guide plate 122 and the open end of the movable container 12 along the circumference of the open end of the movable container 12. Figure 1 As shown, one or more connecting rods 123 arranged along the circumference of the movable container 12 are fixedly connected to the open end of the movable container 12, and the water guide plate 122 is horizontally installed on the connecting rod 123. The water guide plate 122 is raised to a height relative to the upper end of the movable container 12 by the connecting rod 123. The gap between the water guide plate 122 and the upper end of the movable container constitutes the aforementioned sewage outlet 124.

[0045] In addition, in order to be able to remove the water guide plate 122 to clean the upper surface of the filter plate 3, in this embodiment, the water guide plate 122 is preferably detachably mounted on the connecting rod 123, for example Figure 1 and Figure 5As shown, the connecting rod 123 is a screw rod, a stopper 1231 is fixed on the connecting rod 123 , the water guide plate 122 is passed through the connecting rod 123 , a nut 1232 is threadedly connected to the connecting rod 123 , and the water guide plate 122 is pressed against the stopper 1231 through the nut 1232 .

[0046] The drain port 124 is mainly used as a discharge port for the filter residue when cleaning the filter residue on the surface of the filter plate 3. During the sewage filtration stage, the drain port 124 can also serve as an inlet for the sewage to be filtered to enter the upper chamber 13. Of course, an additional inlet for the sewage to be discharged into the upper chamber 13 can also be opened on the water guide plate 122 or the fixed container 11, and the specific selection is based on actual needs.

[0047] In addition, the movable container 12 can move vertically between a first position and a second position relative to the fixed container 11. The first position is vertically higher than the second position. That is, the movable container 12 can move upward from the second position to the first position, or move downward from the first position to the second position. Specifically: In the first position, Figure 2 In the state shown, the movable container 12 at least partially extends upward from the filter plate 3, and the portion of the movable container 12 extending from the filter plate 3 and the filter plate 3 are enclosed to form an upper chamber 13, and the sewage outlet 124 is vertically higher than the filter plate 3 by a certain distance. At this time, during the filtration stage, the height of the sewage outlet 124 is the highest water level that can be reached in the upper chamber 13, that is, in the upper chamber 13, the space between the sewage outlet 124 and the filter plate 3 is the space for the sewage to be filtered to enter.

[0048] In the second position, Figure 3 As shown, the upper edge of the drain outlet 124 is higher than the upper surface of the filter plate 3, and the lower edge of the drain outlet 124 is not higher than the upper surface of the filter plate 3. Preferably, the lower edge of the drain outlet 124 is flush with the upper surface of the filter plate 3, so as to ensure that the filter residue of the filter plate can be radially flushed out in all directions in the subsequent process; if the lower edge of the drain outlet 124 is higher than the upper surface of the filter plate 3, the lower edge of the drain outlet 124 will protrude upward from the upper surface of the filter plate 3, so that the protruding part will form a barrier to the filter residue when the filter residue on the surface of the filter plate 3 is subsequently flushed.

[0049] It is understandable that in the second position, Figure 3 As shown, the upper chamber 13 is equivalent to not existing. The vertical width of the sewage outlet 124 (ie, the vertical distance between the water guide plate 122 and the upper end of the movable container 12) can be designed to be 1 cm-6 m.

[0050] In this embodiment, the upper edge of the sewage outlet 124 can be understood as the lower surface of the water guide plate 122 , and the lower edge of the sewage outlet 124 can be understood as the upper port or upper end surface of the movable container 12 .

[0051] Through the above arrangement, during the filtering phase, the movable container 12 can be switched to the first position (i.e. Figure 2 As shown in the state), an upper chamber 13 is formed between the movable container 12 and the filter plate 3 for the sewage to be filtered to pass through for filtration.

[0052] In the stage of clearing the filter hole 31, the movable container 12 is switched to the second position (i.e. Figure 3 In the state shown), in the second position, the gap between the lower surface of the water guide plate 122 and the upper surface of the filter plate 3 is equivalent to forming a sewage discharge channel 125 radiating horizontally in all directions; when the filter hole 31 is unblocked, the sewage in the pressurized chamber 141 is discharged upward through the filter hole 31, thereby squeezing out the impurities in the filter hole 31; after the sewage flows upward out of the filter hole 31, it will enter the aforementioned sewage discharge channel 125. After entering the drainage channel, the water will flow out in all directions along the radial direction of the water guide plate 122 and finally flush out from the sewage outlet 124. During this process, the water in the drainage channel can flush out the filter residue remaining on the upper surface of the filter plate 3 when flowing out to the sewage outlet 124, thereby cleaning the filter residue on the upper surface of the filter plate 3.

[0053] It is worth noting that, since the vertical width of the sewage channel 125 (i.e., the vertical width of the sewage outlet 124) is relatively narrow, it can be ensured that there will be a certain water pressure when the water flows outward in the sewage channel 125. It can be simply understood that the water rushes out radially outward in the sewage channel 125 and has a certain flushing ability, so that the filter residue attached to the upper surface of the filter plate 3 can be better flushed out.

[0054] It can be seen that in this embodiment, when the filter hole 31 is cleared when the movable container 12 is in the second position, the flushing assembly, the pressurized chamber 141 and the sewage channel 125 cooperate with each other, which can not only flush out the filter residue in the filter hole 31, but also form a flushing water flow in the sewage channel 125 after the water flushes out of the filter hole 31, so as to flush out the filter residue on the upper surface of the filter plate 3 through the sewage outlet 124.

[0055] In order to ensure the sealing of the connection between the movable container 12 and the fixed container 11 during filtration, in some embodiments, as shown in FIG. Figure 5 As shown, a first sealing member surrounding the fixed container 11 along the circumference of the fixed container 11 is provided between the fixed container 11 and the movable container 12 .

[0056] Among them, the first sealing member includes a first sealing ring L1, and the first sealing ring L1 can be an O-ring; specifically in this embodiment, the top of the fixed container 11 protrudes radially outward to form a circle of first steps 111, and the lower end of the movable container 12 protrudes radially inward to form a circle of second steps 121.

[0057] The first sealing ring L1 is fixedly connected to the bottom surface of the first step 111 along the circumference of the fixed container 11, or the first sealing ring L1 is fixedly connected to the top surface of the first step along the circumference of the movable container 12. Both methods are acceptable.

[0058] When the movable container 12 is in the first position, as shown in FIG. Figure 2 As shown, the first sealing ring L1 is vertically compressed between the first step 111 and the second step 121 to form a seal.

[0059] In addition, in order to reduce the entry of filter residue into the gap between the inner circumferential wall of the movable container 12 and the outer circumferential wall of the first step 111, in some embodiments, the first sealing member also includes a third sealing ring L3, for example, a lip-shaped sealing ring, which is fixedly connected to the top of the outer circumferential wall of the first step 111 around the circumference of the first step 111, and the side of the third sealing ring L3 away from the first step 111 slides against the inner circumferential wall of the movable container 12.

[0060] In order to drive the movable container 12 to move vertically between the first position and the second position, in some embodiments, a driving component is provided between the fixed container 11 and the movable container 12, and the driving component is used to drive the movable container 12 to move vertically between the first position and the second position relative to the fixed container 11.

[0061] Among them Figure 1 and Figure 2 As shown, the driving component can be one or more first hydraulic cylinders 15 arranged along the circumference of the fixed container 11. The first hydraulic cylinder 15 is vertically arranged, with its lower end fixed to the fixed container 11 and its upper end fixed to the movable container 12. Through the telescopic action of the first hydraulic cylinder 15, the movable container 12 is pushed to move vertically relative to the fixed container 11 to achieve switching between the first position and the second position.

[0062] Of course, the driving component can also be a component that can be linearly extended and retracted, such as a cylinder or an electric cylinder.

[0063] In order to enable the movement of the sealing plate 41 between the open position and the closed position to be linked with the movement of the movable container 12 between the first position and the second position, in some embodiments: Combine Figure 2 and Figure 4 As shown, the blocking assembly 4 further includes a linkage 42. The sealing plate 41 is in the pressurized chamber 141. The linkage 42 is used to realize the linkage between the movable container 12 and the sealing plate 41. The linkage 42 is constructed as follows: Figure 2 As shown, when the movable container 12 is in the first position, the linkage member 42 drives the sealing plate 41 to enter the open position; Figure 3As shown, when the movable container 12 is in the second position, the linkage member 42 drives the sealing plate 41 to enter the closed position.

[0064] Specifically in this embodiment, a linkage member 42 is provided, which includes a guide rod 421 and an elastic member. The guide rod 421 is movably arranged on the filter plate 3 in a vertical direction. One end of the guide rod 421 is fixed to the sealing plate 41, and the other end extends upward from the filter plate 3 to form a pressure-bearing end for the water guide plate 122 to press against. The elastic member is used to provide elastic force to drive the filter plate 3 to have a tendency to move toward the open position (that is, the filter plate 3 has a tendency to move upward under the elastic force of the elastic member).

[0065] The elastic member can be a spring 422, preferably a tension spring, one end of the spring 422 is fixed to the filter plate 3, and the other end is fixed to the sealing plate 41. The spring 422 generates an upward elastic pulling force on the sealing plate 41 to reset the sealing plate 41 to the open position.

[0066] When the movable container 12 moves upward from the second position to the first position, the water guide plate 122 will gradually move upward during this process. As the water guide plate 122 moves upward, the guide rod 421 and the sealing plate 41 will gradually move upward under the elastic force of the spring 422 until they enter the open position.

[0067] When the movable container 12 moves downward from the first position to the second position, during this process, the water guide plate 122 will gradually move downward, and finally the water guide plate 122 will press against the upper end of the guide rod 421 (i.e., the pressure end of the guide rod 421). Subsequently, as the water guide plate 122 continues to move downward, the water guide plate 122 will push the guide rod 421 downward so that the guide rod 421 overcomes the elastic force of the spring 422 and pushes the sealing plate 41 downward until it enters the closed position; preferably, when the movable container 12 reaches the second position, the sealing plate 41 is in the closed position.

[0068] It can be seen that in this embodiment, the movement of the sealing plate 41 is linked to the movement of the movable container 12, which simplifies the operation steps, and the movement of the sealing plate 41 and the movement of the movable container 12 can share a power source.

[0069] This embodiment provides a water filling component 5, the pressurized chamber 141 includes a water inlet 22; Figure 2As shown, the flushing assembly includes a first water pump 51, the water outlet end of the first water pump 51 is connected to the water inlet 22 through a pipeline, and the water inlet end of the first water pump 51 is connected to an external water source. For example, a water tank for storing clean water is provided, and the water inlet end of the first water pump 51 is connected to the water tank to draw water in the water tank through the water inlet 22 into the pressurized chamber 141 to achieve pressurized flushing of the filter hole 31; of course, in some other optional embodiments, the first water pump 51 can also draw the filtrate discharged from the water outlet chamber 142 into the pressurized chamber 141 for clearing.

[0070] In addition, a valve 52 is provided on the aforementioned pipeline or the water inlet 22 . During the filtration stage, the valve 52 is closed to prevent the filtrate from flowing back into the first water pump 51 .

[0071] In addition, in some other embodiments, the provided sewage treatment device also includes a post-processing module M, which can realize one of the processes of sedimentation, disinfection, desalination, etc. on the filtered sewage. Preferably, the post-processing module can sequentially perform flocculation sedimentation-disinfection-desalination and other process steps on the filtered sewage. There are many descriptions of this post-processing module M in the prior art, and no further details will be given here.

[0072] For example, this embodiment also includes a second water pump 113, the water inlet end of the second water pump 113 is connected to the drain hole 112, and the water outlet end of the second water pump 113 is connected to the post-processing module M. The second water pump 113 is used to introduce the filtered sewage in the outlet chamber 142 into the post-processing module M for post-processing.

[0073] Example 2 In Example 1, the movement of the sealing plate 41 and the movement of the movable container 12 are equivalent to sharing a common power source. The difference between this embodiment and Example 1 is that in this embodiment, the sealing plate 41 is provided with an additional power source, and the linkage member 42 is not provided. Specifically: like Figure 6 As shown, the sealing plate 41 is arranged in the water outlet chamber 142, and the sealing assembly 4 also includes a power component, which is used to drive the sealing plate 41 to move vertically between the open position and the closed position. The power component can adopt a second hydraulic cylinder 43, and the second hydraulic cylinder 43 is vertically fixed in the water outlet chamber 142, and its upper end is fixed to the sealing plate 41. The sealing plate 41 is driven to move between the open position and the closed position through the vertical telescopic action of the second hydraulic cylinder 43.

[0074] Example 3 This embodiment further provides a sewage treatment method based on Example 1, which at least includes a filtration step, wherein the filtration step is performed using the textile printing and dyeing equipment sewage treatment device provided in Example 1 or Example 2.

[0075] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this application can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this application can be achieved. This is not a limitation herein.

[0076] Furthermore, 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 technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0077] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A wastewater treatment device for textile printing and dyeing equipment, comprising a filter unit, characterized in that: The filtering unit comprises: A container, wherein a filter plate having filter holes is provided in the container, and the internal space of the container is divided by the filter plate into an upper chamber located above the filter plate and a lower chamber located below the filter plate; a partition disposed in the lower chamber, the lower chamber being divided into a pressurized chamber and a water outlet chamber by the partition; the partition being provided with one or more water guide holes communicating with the pressurized chamber and the water outlet chamber; A sealing assembly comprising a sealing plate for sealing the water guide hole, wherein the sealing plate can be driven relative to the partition plate between an open position and a closed position. In the closed position, the sealing plate seals the water guide hole; in the open position, the water guide hole at least partially communicates with the pressurized chamber and the water outlet chamber; The water filling assembly is used to continuously flow water into the pressurized chamber when the sealing plate is in the closed position.

2. A textile printing and dyeing equipment wastewater treatment device according to claim 1, characterized in that: The container includes a fixed container and a movable container; the filter plate is fixed to the top of the fixed container so that the lower chamber is formed in the fixed container; the top of the movable container is open to form an open end; the open end of the movable container is provided with a water guide plate parallel to the filter plate, and a sewage outlet is formed between the water guide plate and the open end of the movable container along the circumference of the open end of the movable container; the sealing plate is located in the pressurized chamber; The movable container can move vertically between a first position and a second position relative to the fixed container; in the first position, the movable container at least partially extends upward from the filter plate, and the portion of the movable container extending from the filter plate and the filter plate together form an upper chamber, and the sewage outlet is vertically higher than the filter plate by a certain distance; in the second position, the upper edge of the sewage outlet is higher than the upper surface of the filter plate, and the lower edge of the sewage outlet is not higher than the upper surface of the filter plate.

3. A textile printing and dyeing equipment wastewater treatment device according to claim 2, characterized in that: The sealing assembly also includes a linkage member, which is used to realize the linkage between the movable container and the sealing plate. The linkage member is constructed so that when the movable container is in the first position, the linkage member drives the sealing plate to enter the open position; when the movable container is in the second position, the linkage member drives the sealing plate to enter the closed position.

4. A textile printing and dyeing equipment wastewater treatment device according to claim 3, characterized in that: The linkage member includes a guide rod and an elastic member. The guide rod is vertically movable and penetrates the filter plate. One end of the guide rod is fixed to the sealing plate, and the other end extends upward from the filter plate to form a pressure-bearing end for the water guide plate to press against. The elastic member is used to provide elastic force to drive the filter plate to have a tendency to move toward the open position. When the movable container is in the first position, the sealing plate is reset to the open position under the elastic force of the elastic member; When the movable container is in the second position, the water guide plate presses downward against the pressed end of the guide rod so that the guide rod overcomes the elastic force of the elastic member and pushes the sealing plate into the closed position.

5. The textile printing and dyeing equipment wastewater treatment device according to claim 2, characterized in that: The sealing plate is arranged in the water outlet chamber, and the blocking assembly further comprises a power component, and the power component is used to drive the sealing plate to move vertically between an open position and a closed position.

6. A textile printing and dyeing equipment wastewater treatment device according to any one of claims 2 to 5, characterized in that: In the closed position, the sealing plate is pressed against the partition to close the water guide hole. In the open position, the sealing plate forms a gap between the sealing plate and the partition in the vertical direction.

7. A textile printing and dyeing equipment wastewater treatment device according to claim 6, characterized in that: The movable container is movably inserted into the fixed container in the vertical direction, and a first sealing member is provided between the fixed container and the movable container, surrounding the fixed container along the circumference of the fixed container; and / or a second sealing member is provided between the sealing plate and the partition. In the closed position, the second sealing member surrounds the circumference of the water guide hole and is squeezed between the sealing plate and the partition.

8. The textile printing and dyeing equipment wastewater treatment device according to claim 6, characterized in that: A driving component is provided between the fixed container and the movable container, and the driving component is used to drive the movable container to move vertically between a first position and a second position relative to the fixed container.

9. The textile printing and dyeing equipment wastewater treatment device according to claim 1, characterized in that: The pressurized chamber includes a water inlet; The water filling component includes a first water pump, a water outlet of the first water pump is connected to a water inlet, and a water inlet of the first water pump is connected to an external water source.

10. A method for treating sewage, comprising a filtration step, characterized in that: The filtering step is carried out using the textile printing and dyeing equipment wastewater treatment device according to any one of claims 1 to 9.

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