A wastewater treatment pool for paper production and processing

Abstract

The utility model relates to the technical field of sewage treatment equipment, and specifically provides a sewage treatment pool for paper production and processing, including a sewage pool body, the sewage pool body is provided with a water inlet and a water outlet, a primary filter mechanism and a secondary filter mechanism are provided between the flow path of the water inlet and the water outlet, the primary filter mechanism includes a filter frame provided at the water inlet and a cleaning device for scraping the filter frame, the cleaning device is slidably provided on the filter frame; the secondary filter mechanism includes a filter plate, the filter plate is slidably provided on the side wall of the sewage pool, and a vertical slide groove for the filter plate to slide is provided on the side wall. By arranging the primary filter mechanism and the secondary filter mechanism in the sewage pool, multi-stage filtration of sewage can be achieved, thereby providing a filtering effect, and by installing the cleaning device on the primary filter mechanism and making the secondary cleaning mechanism slidably provided at the same time, cleaning is convenient.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment equipment, in particular to a sewage treatment pool for paper production and processing. Background Art

[0002] A lot of water is used in the papermaking process, and a lot of papermaking wastewater is generated in the production process. The pollutants contained in papermaking wastewater are mainly short fibers, microfibers, silt and impurities. The direct discharge of papermaking wastewater will cause serious pollution to the environment and waste fiber resources. Sewage treatment pools are commonly used devices for papermaking enterprises to centrally clean sewage.

[0003] The prior art patent number (CN 219784000 U) provides a sewage pool filtering device, which includes a sewage pool, a steel plate is installed inside the sewage pool, one side of the top of the steel plate is connected to the inner wall of the sewage pool by a hinge, and three groups of grid mesh plates are equidistantly distributed on the upper surface of the steel plate. A mounting plate is fixedly installed on the side of the sewage pool away from the ditch, and a sewage pump is fixedly installed on the surface of the mounting plate by bolts. The sewage pump is equipped with an inlet pipe and an outlet pipe, and the inlet pipe extends to the interior of the sewage pool and is equipped with a filter cartridge. The above patent performs a multi-stage process on the sewage through three groups of grid meshes, so that some pollutants are precipitated between the grid meshes, and a filter cartridge is installed at the water pipe to filter the sewage finally pumped out, thereby ensuring multiple filtration of the sewage.

[0004] However, some sewage pools in the prior art are not equipped with multi-stage filtration, and usually use single filtration, which can easily cause blockage of the filter holes, affecting the filtration effect and sewage cleaning effect. There are also some sewage pools that perform multi-stage filtration on the sewage pool by setting up multiple sets of filter plates, but due to design problems, the filter plates cannot be cleaned conveniently and effectively. After long-term use, the filter holes will still be clogged, reducing the sewage treatment efficiency. Summary of the invention

[0005] Aiming at the problem that a filter screen in a sewage pool cannot be cleaned conveniently or effectively, thus easily causing blockage, the utility model provides a sewage treatment pool for paper production and processing, which can effectively and conveniently clean the filter screen in the sewage pool.

[0006] In order to solve the above problems, the technical solution adopted by the utility model is a sewage treatment pool for paper production and processing, including a sewage pool body, the sewage pool body is provided with a water inlet and a water outlet, a primary filter mechanism and a secondary filter mechanism are provided between the flow path of the water inlet and the water outlet, the primary filter mechanism includes a filter frame provided at the water inlet and a cleaning device for scraping the filter frame, the cleaning device is slidably provided on the filter frame; the secondary filter mechanism includes a filter plate, the filter plate is slidably provided on the side wall of the sewage pool body, and a vertical slide groove for the filter plate to slide is provided on the side wall of the sewage pool body. By arranging the primary filter mechanism and the secondary filter mechanism in the sewage pool, multi-stage filtration of sewage can be achieved, and by installing the cleaning device on the primary filter mechanism, it is convenient to clean the primary filter mechanism, and at the same time, the slidable setting of the secondary cleaning mechanism makes it convenient to take the secondary cleaning device out of the sewage pool body, which is convenient for cleaning and reduces blockage, thereby ensuring the sewage treatment efficiency.

[0007] Preferably, the filter frame includes a horizontal plate with filter holes and a U-shaped vertical plate frame, the horizontal plate is arranged at the bottom of the U-shaped vertical plate frame, the opening of the U-shaped vertical plate frame faces the outside of the sewage tank body, and a sliding groove is arranged on the side wall of the U-shaped vertical plate frame, and the cleaning device slides and moves above the horizontal plate through the sliding groove. By scraping the cleaning device back and forth on the horizontal plate, the pollutants such as fibers remaining above the horizontal plate can be moved from the opening position of the U-shaped vertical plate frame to avoid clogging.

[0008] Preferably, the cleaning device comprises a scraping plate, and sliding support parts that slide in cooperation with the sliding groove are provided on both sides of the scraping plate, and the lower end of the scraping plate scrapes in cooperation with the horizontal plate. The scraping plate will not affect the filtration of sewage on the horizontal plate, and can also achieve a good scraping effect.

[0009] Preferably, the filter frame further comprises a lifting support frame, the sewage pool body is provided with a lifting chute, the lifting support frame is lifted and moved on the sewage pool body through the lifting chute, and the lifting support frame is fixedly connected to the filter frame. The lifting support frame raises the filter frame so that the horizontal plate is higher than the height of the sewage pool body, thereby facilitating the cleaning of debris remaining on the horizontal plate out of the sewage pool.

[0010] Preferably, the cleaning device further comprises a reset mechanism, the reset mechanism comprising a spring, a fixing part and a handle, the fixing part is fixed on the U-shaped vertical plate frame, the handle is fixed on the scraper plate, and the spring is connected between the handle and the fixing part. The default position of the scraper plate during filtration is ensured to avoid the scraper plate being located at the opening position of the U-shaped vertical plate frame during filtration, so that part of the residue is located between the scraper plate and the inner wall of the U-shaped vertical plate frame, which is not easy to clean.

[0011] Preferably, a handle is provided on the upper end of the filter plate, so as to facilitate lifting the filter plate for cleaning.

[0012] Preferably, the sewage tank body further comprises a partition, which is vertically arranged in the middle of the sewage tank body, the primary filtering mechanism and the secondary filtering mechanism are respectively arranged on both sides of the partition, and a sewage outlet is arranged at one end of the sewage tank body close to the primary filtering mechanism. The partition separates the sewage tank into a sedimentation tank and a filtration tank, so that the sewage after passing through the primary filtering device can be precipitated in the sedimentation tank first, and the pollutants after precipitation can be discharged from the sewage outlet, thereby reducing the number of pollutants in the sewage passing through the secondary filtering mechanism and reducing the possibility of blockage.

[0013] Preferably, a plurality of supporting legs are provided at the bottom of the sewage tank body, so that the sewage tank body is more stable and firm.

[0014] It can be seen from the above technical solutions that the advantages of the utility model are:

[0015] 1. By arranging a primary filtering mechanism and a secondary filtering mechanism in the sewage pool, multi-stage filtration of sewage can be achieved. By installing a cleaning device on the primary filtering mechanism, the primary filtering mechanism can be easily cleaned. At the same time, the secondary cleaning mechanism can be slidably arranged, so that the secondary cleaning device can be easily taken out of the sewage pool body for easy cleaning, thereby ensuring the sewage treatment efficiency.

[0016] 2. The cleaning device is set as a scraper plate, which will not affect the filtration of sewage on the horizontal plate, and can have a good scraping effect. At the same time, the design of the scraper plate is convenient for adding a reset mechanism to ensure the scraper plate is in the default position during filtration, avoiding the scraper plate from being located in the opening position of the U-shaped vertical plate frame during filtration, so that some residues are located between the scraper plate and the inner wall of the U-shaped vertical plate frame, which is not easy to clean.

[0017] 3. A partition is set on the sewage pool body, which divides the sewage pool into a sedimentation tank and a filtration tank, so that the sewage after passing through the primary filtration device can be precipitated in the sedimentation tank first, and the pollutants after precipitation can be discharged from the sewage outlet, reducing the number of pollutants in the sewage passing through the secondary filtration mechanism and reducing the possibility of blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The structure of the specific implementation method of the utility model is shown in FIG. Figure 1 .

[0020] Figure 2 The structure of the specific implementation method of the utility model is shown in FIG. Figure 2 .

[0021] Figure 3 The structure of the specific implementation method of the utility model is shown in FIG. Figure 3 .

[0022] Figure 4 It is a schematic diagram of the structure of the cleaning device and the reset mechanism in a specific implementation manner of the utility model.

[0023] Figure 5 It is a structural schematic diagram of a lifting support frame in a specific implementation manner of the utility model.

[0024] In the figure:

[0025] 1-sewage tank body, 11-water inlet, 12-water outlet, 13-support leg, 14-vertical chute, 15-lifting chute, 16-partition, 17-drainage outlet,

[0026] 2-primary filtering mechanism, 21-filter frame, 211-horizontal plate, 212-U-shaped vertical plate frame, 22-cleaning device, 221-scraping plate, 2211-sliding support part,

[0027] 3-secondary filter mechanism, 31-filter plate, 311-handle,

[0028] 4-reset mechanism, 41-spring, 42-fixing part, 43-handle piece, 431-bending rod, 4311-bending part, 432-grip,

[0029] 5-lifting support frame, 51-vertical support, 511-vertical rod, 5111-sliding connection part, 5112-slot, 512-cross rod, 513-connecting rod, 52-connecting seat, 53-handle rod. DETAILED DESCRIPTION

[0030] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0031] like Figure 1-5 As shown, a wastewater treatment pool for paper production and processing includes a wastewater pool body 1, such as Figure 1As shown, the sewage tank body 1 is a rectangular groove body made of PE material, a plurality of supporting legs 13 are arranged at the bottom of the sewage tank body 1, and the end faces at both ends are vertical faces. The sewage tank body 1 is provided with a water inlet 11 and a water outlet 12. In this embodiment, the water inlet 11 and the water outlet 12 are respectively arranged on the end faces at both ends of the sewage tank body 1, the water inlet 11 is located at the upper part of the end face, and the water outlet 12 is located at the lower part of the end face. In addition, in other embodiments, the water inlet 11 can also be directly arranged directly above or obliquely above the sewage tank body 1, and the sewage enters the sewage tank body 1 from the water inlet 11 and flows out from the water outlet 12 A primary filtering mechanism 2 and a secondary filtering mechanism 3 for filtering are provided between the flow path of the water inlet 11 and the water outlet 12. The primary filtering mechanism 2 includes a filtering frame 21 provided at the water inlet 11 and a cleaning device 22 for scraping the filtering frame 21. The filtering frame 21 includes a horizontal plate 211 with filtering holes and a U-shaped vertical plate frame 212. The U-shaped vertical plate frame 212 includes three vertical plates connected end to end in sequence to form a U shape with an opening. The horizontal plate 211 is provided at the bottom of the U-shaped vertical plate frame 212. The U-shaped vertical plate frame 212 is provided on the inner side of the end surface of the sewage tank body 1. , and the opening of the U-shaped vertical plate frame 212 faces the outer side of the end surface of the sewage tank body 1, and sliding grooves are provided on the two parallel vertical plates of the U-shaped vertical plate frame 212. The cleaning device 22 is slidably arranged above the horizontal plate 211 through the sliding groove, and the lower end of the cleaning device 22 abuts against the horizontal plate 211. The cleaning device 22 includes a scraping plate 221, and both sides of the scraping plate 221 are provided with sliding support parts 2211 that slide with the sliding groove. The sliding support parts 2211 are slider protrusions extending from the scraping plate 221 to both sides. When the sliding support parts 2211 slide back and forth along the sliding groove, the scraping plate 2 The lower end of the cleaning device 21 scrapes and cooperates with the horizontal plate 211. By scraping back and forth on the horizontal plate 211, the fibers and other pollutants remaining on the top of the horizontal plate 211 can be cleaned out of the primary filtering mechanism 2 from the opening of the U-shaped vertical plate frame 212 to avoid blockage. After passing through the primary filtering device, the sewage will flow to the secondary filtering mechanism 3. The secondary filtering mechanism 3 includes a filter plate 31, which is a straight plate with a filter net. The filter plate 31 is slidably arranged on the side wall of the sewage tank body 1. The two side walls of the sewage tank body 1 are provided with vertical slides 14 for the filter plate 31 to slide up and down. By arranging the primary filtering mechanism 2 and the secondary filtering mechanism 3 in the sewage tank, multi-stage filtration of sewage can be achieved. By installing the cleaning device 22 on the primary filtering mechanism 2, convenient cleaning of the primary filtering mechanism 2 is achieved. At the same time, the secondary cleaning mechanism can be slidably arranged, so that it is convenient to take out the secondary cleaning device 22 from the sewage tank body 1, which is convenient for cleaning, thereby ensuring the sewage treatment efficiency.

[0032] like Figure 1 and Figure 4As shown, the cleaning device 22 is further provided with a reset mechanism 4, which includes a spring 41, a fixing portion 42 and a handle 43. The fixing portion 42 is a fixing block fixed to the vertical plate of the U-shaped vertical plate frame 212 away from the opening, and the handle 43 is fixed to the scraping plate 221. Figure 3 As shown, in this embodiment, the handle member 43 includes two parallel bending rods 431 and a gripper 432 connecting the two bending rods 431. The ends of the bending rods 431 are fixed on the scraping plate 221. The middle part of the bending rod 431 is provided with a bending portion 4311 that bends upward. The height of the bending portion 4311 is the same as the height of the fixed block. The spring 41 connects the fixed block and the bending portion 4311. The length of the spring 41 in the natural state is less than the distance between the fixed block and the bending portion 4311 when the scraping plate 221 is close to the U-shaped vertical plate frame 212. The primary filtering device When filtering is carried out, the scraper plate 221 does not perform scraping work. The scraper plate 221 is limited by the spring 41 so that it cannot move at will. During the sewage filtering process, the scraper plate 221 is close to the vertical plate of the U-shaped vertical plate frame 212 away from the opening under the elastic force of the spring 41, which will not hinder the flow of sewage on the horizontal plate 211, and also ensure that the pollutants remaining on the horizontal plate 211 will be located between the scraper plate 221 and the opening, thereby facilitating and avoiding the pollutants being located on the inner side of the scraper plate 221 and making it difficult to clean.

[0033] like Figure 5As shown, the filter frame 21 also includes a lifting support frame 5. A lifting chute 15 is provided on the end surface of the sewage pool body 1 close to the water inlet 11. The lifting chute 15 is provided on the outer side surface of the end surface. The lifting support frame 5 is lifted and moved on the end surface of the sewage pool body 1 through the lifting chute 15. The lifting support frame 5 is fixedly connected to the filter frame 21. The lifting support frame 5 includes two vertical brackets 51, a connecting seat 52 for connecting the two sides of the U-shaped vertical plate frame 212, and a handle bar 53 for connecting the two vertical brackets 51. The vertical bracket 51 includes a vertical rod 511, a horizontal rod 512 and a connecting rod 513. The lower end of the vertical rod 511 is provided with a sliding connection part 5111, and the sliding connection part 5111 is slidably matched with the vertical slide groove 14. The groove walls on both sides of the vertical slide groove 14 are provided with a card protrusion extending vertically in the up and down directions. The two sides of the sliding connection part 5111 are provided with a card groove 5112 matched with the card protrusion. When the sliding connection part 5111 extends into the vertical slide groove 14, The convex and the groove 5112 are relatively fixed in the front-to-back direction, so the vertical bracket 51 can only move up and down along the vertical slide 14, one end of the cross bar 512 is connected to the upper end of the vertical rod 511, and the other end of the cross bar 512 extends into the sewage tank body 1 and is fixedly connected to the connecting seat 52 through the connecting rod 513. The lifting support frame 5 raises the filter frame 21. When the sliding connection part 5111 is located at the lower end of the vertical slide 14, the cross bar 512 is against the sewage tank body 1. When the height of the horizontal plate 211 is lower than the height of the upper end surface of the sewage tank body 1, the opening of the U-shaped vertical plate frame 212 is blocked by the end surface of the sewage tank body 1, preventing sewage from flowing out of the sewage tank body 1 from the opening of the U-shaped vertical plate frame 212. When cleaning is required, the handle rod 53 is lifted to make the sliding connection part 5111 located at the upper end of the vertical slide groove 14, so that the horizontal plate 211 is higher than the height of the sewage tank body 1, thereby facilitating the cleaning of debris left on the horizontal plate 211 out of the sewage tank.

[0034] A handle 311 is provided at the upper end of the filter plate 31 to facilitate lifting the filter plate 31 for cleaning.

[0035] like Figure 3 As shown, the sewage tank body 1 also includes a partition 16, which is vertically arranged in the middle of the sewage tank body 1. The primary filtering mechanism 2 and the secondary filtering mechanism 3 are respectively arranged on both sides of the partition 16. The sewage tank body 1 is provided with a sewage outlet 17 at one end close to the primary filtering mechanism 2. Valves are provided at the sewage outlet 17 and the drainage outlet. The partition 16 separates the sewage tank into a sedimentation tank and a filtration tank, so that the sewage after passing through the primary filtering device can be precipitated in the sedimentation tank first, and the pollutants after precipitation can be discharged from the sewage outlet 17, thereby reducing the number of pollutants in the sewage passing through the secondary filtering mechanism 3 and reducing the possibility of blockage.

[0036] The working process of the utility model is as follows: when sewage treatment is required, sewage with residues such as fibers or paper pieces enters from the water inlet 11 and flows into the primary filter mechanism 2. Some larger residues cannot pass through the filter holes and are blocked above the transverse plate 211. Most of the sewage flows out from the filter holes on the transverse plate 211 and falls into the sedimentation tank. After sedimentation in the sedimentation tank, some residues slowly fall to the bottom of the sedimentation tank under the influence of gravity. Some smaller fibers or paper pieces float on the surface of the sewage and follow the water flow through the top of the partition 16 and enter the filter tank. The water flows from the top of the partition 16 to the water outlet 12. When the water flows through the filter plate 31, these smaller residues will be blocked on the filter plate 31. The filtered sewage is discharged from the drain outlet.

[0037] When it is necessary to clean the sewage pool, the primary filter mechanism 2 and the secondary filter mechanism 3, open the valve at the sewage outlet 17, and discharge the residue precipitated in the sedimentation tank from the sewage outlet 17 by water flow or manually; when it is necessary to clean the filter plate 31, grab the handle 311 above the filter plate 31 and lift the filter plate 31 out of the sewage pool body 1, so that when cleaning the filter plate 31, it will not be restricted by the sewage pool, and cleaning is more convenient. After cleaning is completed, the filter plate 31 is aligned with the vertical slide groove 14 and falls back into the sewage pool; when it is necessary to clean the filter frame 21, it is necessary to first lift the lifting support frame 5, raise the height of the horizontal plate 211 to a height higher than the end face of the sewage pool, and then drive the handle 43 or the scraper plate 221 to move along the sliding groove.

[0038] It can be seen from the above embodiments that the beneficial effect of the utility model is that by arranging the primary filtering mechanism 2 and the secondary filtering mechanism 3 in the sewage pool, multi-stage filtering of sewage can be achieved, and by installing the cleaning device 22 on the primary filtering mechanism 2, the primary filtering mechanism 2 can be conveniently cleaned, and at the same time, the secondary cleaning mechanism can be slidably arranged, so that the secondary cleaning device 22 can be conveniently taken out of the sewage pool body 1, which is convenient for cleaning, thereby ensuring the sewage treatment efficiency;

[0039] The cleaning device 22 is configured as a scraper plate 221, which will not affect the filtration of sewage on the horizontal plate 211, and can also achieve a good scraping effect. At the same time, the design of the scraper plate 221 facilitates the addition of a reset mechanism 4 to limit the default position of the scraper plate 221 during filtration, thereby preventing the scraper plate 221 from being located at the opening position of the U-shaped vertical plate frame 212 during filtration, so that part of the residue is located between the scraper plate 221 and the inner wall of the U-shaped vertical plate frame 212, which is not easy to clean;

[0040] A partition 16 is provided on the sewage pool body 1, and the partition 16 separates the sewage pool into a sedimentation tank and a filtration tank, so that the sewage after passing through the primary filtration device can be precipitated in the sedimentation tank first, and the pollutants after precipitation can be discharged from the sewage outlet 17, thereby reducing the number of pollutants in the sewage passing through the secondary filtration mechanism 3 and reducing the possibility of blockage.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wastewater treatment pool for paper production and processing, comprising a wastewater pool body (1), wherein the wastewater pool body (1) is provided with a water inlet (11) and a water outlet (12), and a primary filtering mechanism (2) and a secondary filtering mechanism (3) are provided between the flow path of the water inlet (11) and the water outlet (12), wherein: The primary filtering mechanism (2) comprises a filtering frame (21) arranged at the water inlet (11) and a cleaning device (22) for scraping the filtering frame (21), wherein the cleaning device (22) is slidably arranged on the filtering frame (21); The secondary filtering mechanism (3) comprises a filter plate (31), the filter plate (31) being slidably arranged on the side wall of the sewage pool body (1) up and down, and a vertical slide groove (14) for the filter plate (31) to slide is provided on the side wall of the sewage pool body (1).

2. The paper production and processing wastewater treatment pool according to claim 1, characterized in that: The filter frame (21) comprises a horizontal plate (211) with filter holes and a U-shaped vertical plate frame (212), wherein the horizontal plate (211) is arranged at the bottom of the U-shaped vertical plate frame (212), the opening of the U-shaped vertical plate frame (212) faces the outside of the sewage tank body (1), and a sliding groove is arranged on the side wall of the U-shaped vertical plate frame (212), and the cleaning device (22) slides and moves above the horizontal plate (211) through the sliding groove.

3. The paper production and processing wastewater treatment pool according to claim 2, characterized in that: The cleaning device (22) comprises a scraping plate (221), and sliding support parts (2211) that are slidably matched with the sliding groove are provided on both sides of the scraping plate (221), and the lower end of the scraping plate (221) is scraped and matched with the transverse plate (211).

4. The paper production and processing wastewater treatment pool according to claim 2, characterized in that: The filter frame (21) further comprises a lifting support frame (5), a lifting chute (15) is provided on the sewage pool body (1), the lifting support frame (5) is lifted and lowered on the sewage pool body (1) via the lifting chute (15), and the lifting support frame (5) is fixedly connected to the filter frame (21).

5. The paper production and processing wastewater treatment pool according to claim 3, characterized in that: The cleaning device (22) further comprises a reset mechanism (4), the reset mechanism (4) comprising a spring (41), a fixing portion (42) and a handle member (43), the fixing portion (42) being fixed on the U-shaped vertical plate frame (212), the handle member (43) being fixed on the scraping plate (221), and the spring (41) being connected between the handle member (43) and the fixing portion (42).

6. The paper production and processing wastewater treatment pool according to claim 1, characterized in that: A handle (311) is provided at the upper end of the filter plate (31).

7. The paper production and processing wastewater treatment pool according to claim 1, characterized in that: The sewage tank body (1) further comprises a partition (16), wherein the partition (16) is vertically arranged in the middle of the sewage tank body (1), the primary filtering mechanism (2) and the secondary filtering mechanism (3) are respectively arranged on both sides of the partition (16), and a sewage outlet (17) is arranged at one end of the sewage tank body (1) close to the filtering mechanism.

8. The paper production and processing wastewater treatment pool according to claim 1, characterized in that: A plurality of supporting legs (13) are provided at the bottom of the sewage tank body (1).

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