Textile printing and dyeing equipment sewage treatment device and treatment method

Abstract

The application relates to the field of sewage treatment, in particular to a printing and dyeing equipment sewage treatment device and method for textile, which comprises a filtering unit, the filtering unit comprises a container, a partition plate, a sealing plate and a flushing assembly; a filter plate with filter holes is arranged in the container, the internal space of the container is divided into an upper chamber and a lower chamber by the filter plate; the lower chamber is divided into a pressurized chamber and a water outlet chamber by the partition plate; a water guide hole is arranged on the partition plate; the sealing plate can be driven to move relative to the partition plate between an open position and a closed position, the sealing plate water guide hole is in the closed position; the water guide hole at least partially communicates the pressurized chamber and the water outlet chamber in the open position; the water filling assembly is used for continuously supplying water into the pressurized chamber when the sealing plate is in the closed position; the impurities in the filter holes are flushed out in a reverse direction by using the water pressure of the water in the pressurized water chamber; compared with the traditional brush cleaning mode, the clogging removal effect is more obvious.

Description

TECHNICAL FIELD

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

[0002] In the textile printing and dyeing industry, a large amount of printing and dyeing sewage is generated. In order to reduce the impact on the environment, the sewage usually needs to be treated to meet the standard before being discharged. In the sewage treatment process, the filtration process is an important step, which mainly filters out the solid impurities in the sewage. The filtered sewage is then subjected to subsequent purification treatment.

[0003] In related technologies, some sewage treatment devices use filter plates with filter holes for filtering sewage. As the filtration progresses, the filter holes of the filter plate are easily clogged, resulting in reduced filtration efficiency. Therefore, the filter plate needs to be cleaned regularly or irregularly.

[0004] To achieve cleaning of the filter plate, some devices are provided with brushes or other structures at the filter plate. When cleaning is needed, the brushes are used to clean the filter plate. However, this brush cleaning method cannot clean the impurities clogging the filter holes, and thus needs to be improved. SUMMARY

[0005] To solve at least one technical problem mentioned in the background, the present application aims to provide a printing and dyeing equipment sewage treatment device for textiles.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions.

[0007] On the one hand, the present application provides a printing and dyeing equipment sewage treatment device for textiles, which comprises a filtration unit, wherein the filtration unit comprises:

[0008] a container, wherein the container is provided with a filter plate having filter holes, and the internal space of the container is divided by the filter plate to form an upper chamber located on the upper side of the filter plate and a lower chamber located on the lower side of the filter plate;

[0009] a partition plate arranged in the lower chamber, wherein the lower chamber is divided by the partition plate to form a pressurized chamber and a water outlet chamber, and one or more water guide holes are formed in the partition plate to communicate the pressurized chamber and the water outlet chamber;

[0010] a plugging assembly comprising a plugging plate for plugging the water guide holes, wherein the plugging plate can be driven to move relative to the partition plate between an open position and a closed position, in the closed position, the plugging plate plugging the water guide holes, and in the open position, the water guide holes at least partially communicating the pressurized chamber and the water outlet chamber;

[0011] a water filling assembly for continuously supplying water to the pressurized chamber when the plugging plate is in the closed position.

[0012] As an optional embodiment of the present application, the container comprises a fixed container and a movable container; the filter plate is fixed on the top of the fixed container to form a lower chamber in the fixed container; the movable container is open at the top to form an open end; the movable container is provided with a water guide plate parallel to the filter plate, and a circle of sewage discharge ports is formed between the water guide plate and the open end of the movable container and surrounds the open end of the movable container in the circumferential direction; the sealing plate is in the pressurized chamber;

[0013] The movable container can move vertically relative to the fixed container between a first position and a second position; in the first position, the movable container extends at least partially upward out of the filter plate, and an upper chamber is formed between the part of the movable container extending out of the filter plate and the filter plate, and the sewage discharge ports are higher than the filter plate by a distance in the vertical direction; in the second position, the upper edge of the sewage discharge ports is higher than the upper surface of the filter plate, and the lower edge of the sewage discharge ports is not higher than the upper surface of the filter plate.

[0014] As an optional embodiment of the present application, the sealing assembly further comprises a linkage for linkage between the movable container and the sealing plate, and the linkage is configured to drive the sealing plate into the open position when the movable container is in the first position, and drive the sealing plate into the closed position when the movable container is in the second position.

[0015] As an optional embodiment of the present application, the linkage comprises a guide rod and an elastic member, the guide rod moves vertically through the filter plate, one end of the guide rod is fixed with the sealing plate, and the other end extends upward out of the filter plate to form a pressure receiving end for the water guide plate to press against; the elastic member is used to provide an elastic force to drive the filter plate to have a tendency to move to the open position;

[0016] 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;

[0017] When the movable container is in the second position, the water guide plate presses downward against the pressure receiving end of the guide rod to drive the guide rod to push the sealing plate into the closed position against the elastic force of the elastic member.

[0018] As an optional embodiment of the present application, the sealing plate is in the water outlet chamber, and the sealing assembly further comprises a power component for driving the sealing plate to move vertically between the open position and the closed position.

[0019] As an optional embodiment of the present application, in the closed position, the sealing plate presses against the partition plate to close the water guide hole, and in the open position, the sealing plate is spaced apart from the partition plate in the vertical direction.

[0020] As an optional embodiment of the present application, the movable container is movably sleeved on the fixed container in the vertical direction, and a first sealing member is arranged between the fixed container and the movable container and surrounds the fixed container in the circumferential direction of the fixed container; and / or a second sealing member is arranged between the sealing plate and the partition plate, and in the closed position, the second sealing member surrounds the water guide hole in the circumferential direction and is pressed between the sealing plate and the partition plate.

[0021] As an optional embodiment of the present application, a driving component is arranged between the fixed container and the movable container, and the driving component is used to drive the movable container to move in the vertical direction relative to the fixed container between the first position and the second position.

[0022] As an optional embodiment of the present application, the pressurized chamber comprises a water inlet hole; the water filling assembly comprises a first water pump, the water outlet end of the first water pump is in communication with the water inlet hole, and the water inlet end of the first water pump is circumscribed by a water source.

[0023] In another aspect, the present application also provides a sewage treatment method, comprising a filtering step, characterized in that the filtering step is performed by using the above-mentioned sewage treatment device for printing and dyeing equipment.

[0024] Compared with the prior art, the present application has the following beneficial effects:

[0025] In the process of clearing and unblocking the filter holes, the water pressure of the water in the pressurized chamber is actually used to reverse flush the impurities in the filter holes. Compared with the traditional brush cleaning method, the unblocking effect of the present application is undoubtedly more obvious.

[0026] In addition, it is worth noting that, in the present application, 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 the latter compared to the former is that the volume is smaller, thereby making the required water demand in the pressurized chamber less, and the small volume space is easier to generate higher water pressure.

[0027] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and other objects, features and advantages of the exemplary embodiments of the present application will be more apparent from the following detailed description taken in conjunction with the accompanying drawings. In the drawings, several embodiments of the present application are shown by way of example and not limitation, in which:

[0029] In the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0030] Figure 1A structural schematic diagram of the present application is shown;

[0031] Figure 2 A cross section of the present application is shown Figure 1 , wherein the movable container is in the first position and the sealing plate is in the open position.

[0032] Figure 3 A cross section of the present application is shown Figure 2 , wherein the movable container is in the second position and the sealing plate is in the closed position.

[0033] Figure 4 A structural schematic diagram of the plugging assembly of the present application is shown;

[0034] Figure 5 A partial cross section of the connecting rod position of the present application is shown;

[0035] Figure 6 A structural schematic diagram of the embodiment 2 of the present application is shown.

[0036] L1, first sealing ring; L2, second sealing member; L3, third sealing ring; M, post-processing module;

[0037] 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, stop block; 1232, nut; 124, blowdown opening; 125, blowdown passage; 13, upper chamber; 14, lower chamber; 141, pressurizing chamber; 142, water outlet chamber; 15, first hydraulic cylinder;

[0038] 2, partition plate; 21, water guide hole; 22, water inlet hole;

[0039] 3, filter plate; 31, filter hole;

[0040] 4, plugging assembly; 41, sealing plate; 42, linkage member; 421, guide rod; 422, spring; 43, second hydraulic cylinder; 43, second hydraulic cylinder;

[0041] 5, water filling assembly; 51, first water pump; 52, valve. DETAILED DESCRIPTION

[0042] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0043] Example 1

[0044] Reference Figures 1-6 As shown in the figure, this embodiment provides a wastewater treatment device for textile printing and dyeing equipment (hereinafter referred to as wastewater), including a filtration unit for filtering wastewater. The filtration unit includes a container 1, a partition 2, a sealing component 4, and a water filling component 5. The components are described in detail below.

[0045] like Figure 2 As shown, the container 1 is provided with a filter plate 3 having filter holes 31. In some embodiments, the filter plate 3 is horizontally arranged inside the container 1.

[0046] Furthermore, 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. The upper chamber 13 is equivalent to the water inlet chamber. In use, the sewage to be filtered is introduced into the upper chamber 13. After being filtered through the filter holes 31 of the filter plate 3, the sewage flows into the lower chamber 14 through the filter holes 31 to achieve filtration. The filter residue remains on the upper surface of the filter plate 3 after being filtered by the filter plate 3, and is ready for subsequent cleaning.

[0047] The partition 2 is horizontally disposed in the lower chamber 14. 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.

[0048] The partition 2 has one or more water guide holes 21 that connect the pressurized chamber 141 and the water outlet chamber 142, for example... Figure 4 As shown in the figure, this embodiment specifically demonstrates the case where a water guide hole 21 is provided in the center of the partition 2. This embodiment will be specifically described below using this form as an example.

[0049] The sealing assembly 4 includes a sealing plate 41 for sealing the water guide hole 21, the sealing plate 41 being drivable to move between an open position and a closed position relative to the partition 2.

[0050] When the sealing plate 41 is in the closed position, please refer to... Figure 3 In the indicated state, 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, thereby cutting off the communication between the pressurized chamber 141 and the outlet chamber 142, that is, the water in the pressurized chamber 141 cannot flow into the outlet chamber 142 through the water guide hole 21.

[0051] To ensure the sealing performance of the sealing plate 41 in the closed position, which seals the water guide hole 21, in some embodiments, a second sealing element L2 is provided between the sealing plate 41 and the partition plate 2. In the closed position, such as... Figure 3 As shown, the second seal L2 surrounds the water guide hole 21 and is pressed between the sealing plate 41 and the partition plate 2. The second seal L2 can be an O-ring, which can be fixed to the bottom surface of the sealing plate 41 or fixed to the upper surface of the partition plate 2 and surround the water guide hole 21.

[0052] When the sealing plate 41 is in the open position, please refer to... Figure 2 As shown, the water guide hole 21 at least partially connects the pressurization chamber 141 and the water outlet chamber 142, for example, in some embodiments, such as 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 be connected to the 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 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.

[0053] The water filling assembly 5 is used to continuously supply water to the pressurized chamber 141 when the sealing plate 41 is in the closed position.

[0054] When wastewater filtration is required, the drive plate 41 enters the open position (i.e., Figure 2 (As shown in the diagram), the wastewater to be filtered is introduced into the upper chamber 13. When the wastewater 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 down from the filter hole 31 into, for example, the pressurized chamber 141, and then flows into the outlet chamber 142 through the water guide hole 21, thus completing the filtration.

[0055] When the filter holes 31 of the filter plate 3 become clogged, resulting in a decrease in filtration efficiency, stop the flow of sewage into the upper chamber 13 and switch the sealing plate 41 to the closed position (i.e., Figure 3 (As shown in the state), then the water filling component 5 is turned on, so that the flushing component continuously introduces water at a certain 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 water pressure, the water in the pressurized chamber 141 will flow upward through the filter hole 31 to the upper chamber 13. During this process, the impurities blocked in the filter hole 31 will be pushed upward through the filter hole 31 under the action of water pressure, thus realizing the cleaning action of the filter hole 31 and reducing the blockage of the filter hole 31.

[0056] It can be seen that, in the process of clearing the filter holes 31, the impurities in the filter holes 31 are actually flushed out in the opposite direction by using the water pressure of the water in the pressurized water cavity. Compared with the traditional brush cleaning method, the clearing effect of the present solution is undoubtedly more obvious.

[0057] In addition, it is worth noting that, in the present solution, the entire lower cavity 14 is not used as the pressurized cavity 141, but a part of the lower cavity 14 is divided as the pressurized cavity 141. The significance of this is that the volume of the latter is smaller than that of the former, thereby making the required amount of water needed to fill the pressurized cavity 141 less, and the small volume space is more likely to generate a higher water pressure.

[0058] In order to be able to clean the filter residues remaining on the upper surface of the filter plate 3 during the process of clearing the filter holes 31, in some embodiments, the container 1 is improved as follows:

[0059] As shown in Figure 1 , the container 1 comprises 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 the present embodiment, the fixed container 11 and the movable container 12 are both cylindrical.

[0060] As shown in Figure 2 , the top of the fixed container 11 is open, the filter plate 3 is fixed at the top opening of the fixed container 11, and preferably, the upper surface of the filter plate 3 is flush with the top opening of the fixed container 11; the lower cavity 14 is formed by the filter plate 3 and the fixed container 11.

[0061] In some embodiments, a drain hole 112 is formed on the bottom plate of the fixed container 11, for discharging the filtrate (i.e. the filtered sewage) in the lower cavity 14 out of the lower cavity 14 through the drain hole 112.

[0062] The top of the movable container 12 is open to form an open end, and in some embodiments, the lower end of the movable container 12 is also open, and the movable container 12 is movably sleeved on the outside of the fixed container 11 in the vertical direction.

[0063] 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 discharge port 124 is formed between the water guide plate 122 and the open end of the movable container 12, which surrounds the circumference of the open end of the movable container 12, for example Figure 1 As shown, one or more connecting rods 123 are fixedly connected to the open end of the movable container 12 and arranged circumferentially around the movable container 12, and the water guide plate 122 is horizontally installed on the connecting rods 123. The water guide plate 122 is raised to a height relative to the upper end of the movable container 12 by the connecting rods 123, and the space between the water guide plate 122 and the upper end of the movable container 12 constitutes the aforementioned sewage discharge port 124.

[0064] 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 the embodiment, the water guide plate 122 is preferably detachably mounted on the connecting rod 123, for example Figure 1 and Figure 5 As 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 arranged on the connecting rod 123, and 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.

[0065] The sewage outlet 124 mainly serves as an outlet for filter residue when cleaning the surface of the filter plate 3. During the sewage filtration stage, the sewage outlet 124 can also serve as an inlet for the sewage to be filtered into the upper chamber 13. Of course, an inlet for the sewage to be filtered into the upper chamber 13 can also be additionally provided on the water guide plate 122 or the fixed container 11, which is selected according to actual needs.

[0066] In addition, the movable container 12 can move vertically relative to the fixed container 11 between a first position and a second position, and the first position is higher than the second position in the vertical direction, 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:

[0067] In the first position, as shown in the state Figure 2 , the movable container 12 extends at least partially upward out of the filter plate 3, and the part of the movable container 12 extending out of the filter plate 3 is enclosed with the filter plate 3 to form the upper chamber 13, and the sewage outlet 124 is higher than the filter plate 3 by a distance in the vertical direction. 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.

[0068] In the second position, as shown in the state Figure 3 , the upper edge of the sewage outlet 124 is higher than the upper surface of the filter plate 3, and the lower edge of the sewage outlet 124 is not higher than the upper surface of the filter plate 3, preferably, the lower edge of the sewage 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 subsequently washed radially outward; if the lower edge of the sewage outlet 124 is higher than the upper surface of the filter plate 3, the lower edge of the sewage 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 during subsequent cleaning of the filter residue on the surface of the filter plate 3.

[0069] It can be understood that in the second position, as shown in the state Figure 3 , the upper chamber 13 does not exist. The width of the sewage outlet 124 in the vertical direction (i.e. the vertical distance between the water guide plate 122 and the upper port of the movable container 12) can be designed to be 1 cm-6 m.

[0070] In this embodiment, the upper edge of the drain outlet 124 can be understood as the lower surface of the water guide plate 122, and the lower edge of the drain outlet 124 can be understood as the upper port or upper surface of the movable container 12.

[0071] With the above settings, during the filtering phase, the active container 12 can be switched to the first position (i.e., Figure 2 (as shown in the diagram) so that an upper chamber 13 is formed between the movable container 12 and the filter plate 3, allowing the wastewater to be filtered to pass through for filtration.

[0072] During the stage of clearing the filter holes 31, the movable container 12 is switched to the second position (i.e., Figure 3 In the second position (as shown), the gap between the lower surface of the guide plate 122 and the upper surface of the filter plate 3 is equivalent to forming a horizontally radiating sewage channel 125. When cleaning the filter holes 31, the sewage in the pressurized chamber 141 is discharged upward through the filter holes 31, thereby squeezing out the impurities in the filter holes 31. After the sewage flows upward out of the filter holes 31, it will enter the aforementioned sewage channel 125. After the water enters the drainage channel, it will flow out radially around the guide plate 122 and finally be flushed 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 together as it flows out to the sewage outlet 124, thereby cleaning the filter residue on the upper surface of the filter plate 3.

[0073] It is worth noting that because 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 is a certain water pressure when the water flows outward in the sewage channel 125. It can be simply understood that the water flows outward radially in the sewage channel 125, which has a certain flushing ability. This can better flush out the filter residue attached to the upper surface of the filter plate 3.

[0074] As can be seen, in this embodiment, during the process of cleaning the filter holes 31 when the active container 12 is in the second position, the flushing component, the pressurized chamber 141 and the sewage discharge channel 125 work together to flush out the filter residue in the filter holes 31 and to form a flushing water flow in the sewage discharge channel 125 after the water flushes out of the filter holes 31, so as to flush out the filter residue on the upper surface of the filter plate 3 through the sewage discharge port 124.

[0075] To ensure a tight seal at the connection between the movable container 12 and the fixed container 11 during filtration, in some embodiments, such as... Figure 5 As shown, a first sealing element is provided between the fixed container 11 and the movable container 12, which surrounds the fixed container 11 in the circumference.

[0076] The first sealing member comprises a first sealing ring L1, which can be an O-shaped ring. In the embodiment, the top of the fixed container 11 is radially outwardly protruded to form a first step 111, and the lower end of the movable container 12 is radially inwardly protruded to form a second step 121.

[0077] 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 fixedly connected to the top surface of the first step along the circumference of the movable container 12.

[0078] When the movable container 12 is in the first position, as shown in Figure 2 , the first sealing ring L1 is vertically compressed between the first step 111 and the second step 121 to form a seal.

[0079] In addition, in order to reduce the filter residue from entering 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 further comprises a third sealing ring L3, such as a lip-shaped sealing ring, which is fixedly connected to the top of the outer circumferential wall of the first step 111 along the circumference of the first step 111, and the side of the third sealing ring L3 away from the first step 111 is in sliding contact with the inner circumferential wall of the movable container 12.

[0080] 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, which is used to drive the movable container 12 to move vertically relative to the fixed container 11 between the first position and the second position.

[0081] As shown in Figure 1 and Figure 2 , the driving component can be one or more first hydraulic cylinders 15 arranged along the circumference of the fixed container 11, which is vertically arranged, with the lower end fixed to the fixed container 11 and the upper end fixed to the movable container 12. Through the extension and retraction of the first hydraulic cylinder 15, the movable container 12 is pushed to move vertically relative to the fixed container 11 to switch between the first position and the second position.

[0082] Of course, the driving component can also be a pneumatic cylinder, an electric cylinder, or any other component that can extend and retract linearly.

[0083] In order to make the movement of the sealing plate 41 between the open position and the closed position be linked with the movement of the movable container 12 between the first position and the second position, in some embodiments:

[0084] In combination with Figure 2 and Figure 4As shown, the blocking assembly 4 further comprises a linkage 42, the blocking plate 41 is in the pressurized chamber 141, the linkage 42 is used to realize linkage between the movable container 12 and the blocking plate 41, the linkage 42 is configured as: as Figure 2 As shown, when the movable container 12 is in the first position, the linkage 42 drives the blocking plate 41 into the open position; as Figure 3 As shown, when the movable container 12 is in the second position, the linkage 42 drives the blocking plate 41 into the closed position.

[0085] Specific to the embodiment, a linkage 42 is provided, the linkage 42 comprises a guide rod 421 and a resilient member, the guide rod 421 is vertically movably arranged on the filter plate 3, one end of the guide rod 421 is fixed with the blocking plate 41, and the other end extends upward out of the filter plate 3 to form a pressure receiving end for the water guide plate 122 to abut against; the resilient member is used to provide an elastic force to drive the filter plate 3 to have a tendency to move to the open position (i.e. the filter plate 3 has a tendency to move upward under the elastic force of the resilient member).

[0086] The resilient member can be a spring 422, preferably a tension spring, one end of the spring 422 is fixed with the filter plate 3, and the other end is fixed with the blocking plate 41, the spring 422 generates an upward elastic tension force on the blocking plate 41 to reset the blocking plate 41 to the open position.

[0087] When the movable container 12 moves upward from the second position to the first position, in this process, the water guide plate 122 will gradually move upward, with the upward movement of the water guide plate 122, the guide rod 421 and the blocking plate 41 will gradually move upward under the elastic pulling of the spring 422, until entering the open position.

[0088] When the movable container 12 moves downward from the first position to the second position, in this process, the water guide plate 122 will gradually move downward, and finally the water guide plate 122 will abut against the upper end of the guide rod 421 (i.e. the pressure receiving end of the guide rod 421), and then with the continuous downward movement of the water guide plate 122, the water guide plate 122 will push the guide rod 421 downward to make the guide rod 421 push the blocking plate 41 to move downward against the elastic force of the spring 422, until entering the closed position; preferably, when the movable container 12 reaches the second position, the blocking plate 41 is in the closed position.

[0089] It can be seen that in the embodiment, the action of the blocking plate 41 is linked with the action of the movable container 12, which simplifies the operation steps, and the driving of the blocking plate 41 and the movable container 12 can share one power source.

[0090] The embodiment provides a water filling assembly 5, the pressurized chamber 141 comprises a water inlet hole 22; as Figure 2As shown, the flushing assembly includes a first water pump 51. The outlet of the first water pump 51 is connected to the inlet 22 via a pipe, and the inlet of the first water pump 51 is connected to an external water source, such as a water tank for storing clean water. The inlet of the first water pump 51 is connected to the water tank to draw water from the water tank and enter the pressurization chamber 141 through the inlet 22 to pressurize and flush the filter holes 31. Of course, in some other optional embodiments, the first water pump 51 can also draw the filtrate discharged from the water chamber 142 into the pressurization chamber 141 for unclogging.

[0091] In addition, a valve 52 is provided on the aforementioned pipeline or 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.

[0092] In addition, in some other embodiments, the provided wastewater treatment device also includes a post-treatment module M, which can perform one of the following processes on the filtered wastewater: sedimentation, disinfection, desalination, etc. Preferably, the post-treatment module can sequentially perform the following process steps on the filtered wastewater: flocculation sedimentation-disinfection-desalination. There are many descriptions of this post-treatment module M in the prior art, so they will not be elaborated on here.

[0093] For example, this embodiment also includes a second water pump 113. The inlet of the second water pump 113 is connected to the drain hole 112, and the outlet of the second water pump 113 is connected to the post-treatment module M. The filtered sewage in the outlet chamber 142 is introduced into the post-treatment module M for post-treatment through the second water pump 113.

[0094] Example 2

[0095] In Embodiment 1, the movement of the sealing plate 41 and the movement of the movable container 12 essentially share a power source. The difference between this embodiment and Embodiment 1 is that in this embodiment, the sealing plate 41 is provided with an additional power source, instead of a linkage 42. Specifically:

[0096] like Figure 6 As shown, the sealing plate 41 is disposed in the water outlet chamber 142. The sealing assembly 4 also includes a power component, which is used to drive the sealing plate 41 to move vertically between the open and closed positions. The power component can be a second hydraulic cylinder 43, which is vertically fixed in the water outlet chamber 142. Its upper end is fixed to the sealing plate 41. The sealing plate 41 is moved between the open and closed positions by the vertical extension and retraction of the second hydraulic cylinder 43.

[0097] Example 3

[0098] The embodiment is further provided on the basis of the embodiment 1, and provides a sewage treatment method, which at least comprises a filtering step, wherein the filtering step is performed by using the printing and dyeing equipment sewage treatment device provided in the embodiment 1 or the embodiment 2.

[0099] It should be understood that the various forms of flow shown above can be used to reorder, add or delete steps. For example, the steps described in the present application can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in the present application can be achieved, which is not limited herein.

[0100] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0101] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A wastewater treatment apparatus for textile printing and dyeing equipment, comprising a filtration unit, characterized in that, The filter unit comprises: a container, which is provided with a filter plate having filter holes, and the internal space of the container is divided by the filter plate into an upper chamber on the upper side of the filter plate and a lower chamber on the lower side of the filter plate; a partition plate arranged in the lower chamber, the lower chamber is divided by the partition plate into a pressurized chamber and a water outlet chamber, the chamber formed between the partition plate and the filter plate serves as the pressurized chamber, and the chamber on the lower side of the partition plate constitutes the water outlet chamber; the partition plate is provided with one or more water guide holes which communicate the pressurized chamber and the water outlet chamber; a blocking assembly, which comprises a blocking plate used for blocking the water guide holes, the blocking plate can be driven to move relative to the partition plate between an open position and a closed position, in the closed position, the blocking plate blocks the water guide holes, and in the open position, the water guide holes at least partially communicate the pressurized chamber and the water outlet chamber; a water filling assembly, which is used for continuously supplying water to the pressurized chamber when the blocking 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 comprises 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 provided with an open end; the open end of the movable container is provided with a water guide plate which is parallel to the filter plate, and a circle of sewage discharge ports is formed between the water guide plate and the open end of the movable container and circumferentially surrounds the open end of the movable container; the blocking plate is arranged in the pressurized chamber; the movable container can move relative to the fixed container in the vertical direction between a first position and a second position; in the first position, the movable container at least partially extends upwardly out of the filter plate, and the part of the movable container extending out of the filter plate and the filter plate together enclose the upper chamber, and the sewage discharge ports are vertically higher than the filter plate by a distance; in the second position, the upper edge of the sewage discharge ports is higher than the upper surface of the filter plate, and the lower edge of the sewage discharge ports 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 blocking assembly further comprises a linkage, which is used for linkage between the movable container and the blocking plate, and the linkage is configured to drive the blocking plate into the open position when the movable container is in the first position, and drive the blocking plate into the closed position when the movable container is in the second position.

4. A textile printing and dyeing equipment wastewater treatment device according to claim 3, characterized in that, The linkage comprises a guide rod and an elastic member, the guide rod moves vertically through the filter plate, one end of the guide rod is fixed to the blocking plate, and the other end extends upwardly out of the filter plate to form a pressure receiving end for the water guide plate to press against; the elastic member is used to provide an elastic force to drive the filter plate to have a tendency to move to the open position; when the movable container is in the first position, the blocking 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 downwardly against the pressure receiving end of the guide rod to drive the guide rod to push the blocking plate into the closed position against the elastic force of the elastic member.

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

6. A textile printing and dyeing equipment wastewater treatment device according to any one of claims 2-5, characterized in that, In the closed position, the blocking plate presses against the partition plate to block the water guide holes, and in the open position, the blocking plate forms a space vertically between the partition plate.

7. A textile printing and dyeing equipment wastewater treatment device according to claim 6, characterized in that, The movable container is movably sleeved on the fixed container in the vertical direction, and a first sealing member is arranged between the fixed container and the movable container and surrounds the fixed container in the circumferential direction of the fixed container; and / or a second sealing member is arranged between the sealing plate and the partition plate, and in the closed position, the second sealing member surrounds the circumferential side of the water guide hole and is pressed between the sealing plate and the partition plate.

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

9. A textile printing and dyeing equipment wastewater treatment device according to claim 1, characterized in that, The pressurized chamber comprises a water inlet hole. The water filling assembly comprises a first water pump, a water outlet end of the first water pump is communicated with the water inlet hole, and a water inlet end of the first water pump is circumscribed with a water source.

10. A method of sewage treatment comprising a filtration step, characterised in that, The filtering step is performed by using the wastewater treatment device of the textile printing and dyeing equipment according to any one of claims 1-9.

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