CN216737874U - Wastewater zero-discharge treatment device - Google Patents

Abstract

The utility model relates to a wastewater zero discharge treatment device, which comprises a chassis and universal wheels, wherein a filtering device and a sedimentation device are sequentially arranged on the top surface of the chassis, the filtering device is communicated with the sedimentation device through a first water pump assembly, the sedimentation device comprises a sedimentation tank with an opening on the top surface, a stirring device is connected at the opening position on the top surface of the sedimentation tank, the stirring device comprises a connecting plate, the connecting plate is detachably and fixedly connected with the sedimentation tank, a stirring motor is arranged on the connecting plate, an output shaft of the stirring motor is rotatably connected with a stirring shaft, a plurality of groups of stirring rods are arranged on the stirring shaft, the number of the stirring rods in each group is two, the stirring rods are hollow rods, a medicament bag is arranged in each stirring rod, one end of each stirring rod is in threaded connection with the stirring shaft, the opening end of the other end of each stirring rod is in threaded connection with a rod cap, a conical cutter is arranged on the inner side surface of the rod cap of the stirring rod, a plurality of medicine dispersing holes are formed in the rod wall of the stirring rod inside the conical cutter, the domestic sewage to be treated, namely the wastewater, can be filtered and precipitated so as to realize zero discharge of the wastewater.

Description

A zero-discharge treatment device for wastewater

technical field

The utility model belongs to the technical field of waste water treatment, in particular to a waste water zero discharge treatment device.

Background technique

Wastewater refers to the general term for water discharged from residents' activities and runoff rainwater. It includes domestic sewage, industrial waste water, and other useless water such as the inflow of primary rainwater into drainage pipes and canals. At present, in response to the national environmental protection call, the comprehensive utilization of water resources will maximize the recycling of wastewater or reuse it in other occasions after treatment to achieve zero discharge of wastewater. However, due to the large amount of industrial wastewater, the existing The zero-discharge wastewater treatment device only focuses on the treatment of industrial wastewater, but for some domestic sewage with recycling value or reusable after treatment, such as the vegetable water used in restaurants or the bathing water used in bathrooms, etc. , it contains relatively few pollutants or harmful substances, so it can also carry out zero-discharge treatment of this type of domestic sewage, and there is no special device for zero-discharge treatment of this type of domestic sewage on the market. There are still shortcomings and deficiencies in the prior art.

Utility model content

The purpose of the utility model is to provide a zero-discharge treatment device for waste water, which solves the problem that there is no special device on the market for zero-discharge treatment of domestic sewage with recycling value or reuse after treatment.

In order to solve the above problems, the technical scheme adopted by the present utility model:

A waste water zero-discharge treatment device, comprising a horizontally arranged chassis, and four corners of the bottom surface of the chassis are provided with universal wheels with self-locking function, characterized in that: a filter device and a sedimentation device are sequentially arranged on the top surface of the chassis , the filter device is connected with a water inlet pipe with a first on-off valve, the filter device and the sedimentation device are communicated through a first water pump assembly, the sedimentation device includes a vertical settling tank with an open top surface, and the top of the sedimentation tank is A stirring device is detachably and fixedly connected to the opening of the surface, the front of the sedimentation box is inlaid with a transparent glass plate, the four corners of the outer bottom surface of the sedimentation box are provided with vertically oppositely distributed outriggers, and the bottom ends of the outriggers are fixedly connected to the top surface of the chassis to prevent sedimentation. The inner bottom surface of the tank is communicated with a water outlet pipe with a second on-off valve, the stirring device includes a horizontally arranged connecting plate, the bottom surface of the connecting plate is detachably and fixedly connected to the top surface of the sedimentation tank, and a vertical connection plate is installed on the top surface of the connecting plate. Directly distributed stirring motor, the output shaft of the stirring motor penetrates the connecting plate and is rotatably connected with a stirring shaft arranged coaxially with the output shaft of the stirring motor, the stirring shaft is located in the sedimentation box and is arranged coaxially with the sedimentation box, The stirring shaft is provided with several groups of equally spaced and horizontally arranged stirring rods from the top to the bottom. The number of each group of stirring rods is two, and the two stirring rods are symmetrically distributed on both sides of the stirring shaft, and the stirring rods are hollow. The rod and the stirring rod are provided with a medicament bag, one end of the stirring rod close to the stirring shaft is threadedly connected with the stirring shaft, the other end of the stirring rod is open, and the open end of the stirring rod is threadedly connected with a rod cap, and the inner side of the rod cap is provided with a rod cap for piercing In the conical knife of the medicine bag, a number of powder medicine holes are opened on the wall of the stirring rod inside the conical knife.

Further, the inner bottom surface of the sedimentation tank is provided with a conical hole with a wide top and a narrow bottom, the water outlet pipe is vertically distributed and communicated with the top end of the water outlet pipe and the bottom end of the conical hole, and the bottom plate below the water outlet pipe is provided with a A drop box with an open top surface and detachable, the drop box is a drawer structure.

Further, the filter device includes a filter box with an open top surface, the filter box is connected to the water inlet pipe, the filter box and the sedimentation box are communicated through a first water pump assembly, and the front of the filter box is inlaid with a transparent glass plate, filtering The top surface outside the box opening position is provided with two vertically oppositely distributed threaded rods, and a filter barrel with a top surface opening is slidably connected between the two threaded rods, and the filter barrel passes through the filter box through the top surface opening of the filter box and The bottom of the filter barrel is located in the filter box, and the bottom surface of the filter barrel is provided with a number of filter holes distributed in a circular array. The top of the bucket is located outside the filter box and both sides of the top of the filter bucket are provided with lugs, the lugs are respectively sleeved on the threaded rods and are slidably connected with the threaded rods, and the threaded rods below the lugs are all sleeved with return springs , the threaded rods above the support lugs are all threadedly connected with locking nuts.

Further, the first water pump assembly includes a vertically arranged mounting plate, the mounting plate is fixedly connected to the top surface of the filter box, a first water pump is mounted on the mounting plate, and a connection between the first water pump and the filter box is communicated. The first water pipe is located at the bottom of the filter box, and the second water pipe is connected between the first water pump and the sedimentation tank, and the end of the second water pipe away from the first water pump is located at the top of the sedimentation tank.

Further, the side of the sedimentation device away from the filter device is connected with a second water pump assembly, and the second water pump assembly includes an L-shaped connecting plate, and the lateral plate of the L-shaped connecting plate is fixedly connected to the top of the sedimentation tank and the L-shaped connecting plate is connected to the top of the sedimentation tank. A reinforcing plate is arranged between the horizontal plate of the connecting plate and the sedimentation tank, a second water pump is installed on the vertical plate of the L-shaped connecting plate, and a third water passage is communicated between the second water pump and the sedimentation tank. The bottom end of the water pipe is located at the bottom of the sedimentation tank, the second water pump is also connected with a fourth water passage pipe, and the fourth water passage pipe is vertically distributed.

Adopting the above-mentioned technical scheme, the beneficial effects of the present utility model:

The utility model can form a mobile trolley by arranging a chassis and arranging a universal wheel on the bottom surface of the chassis, thereby facilitating the movement of the position of the zero-discharge treatment device for waste water, and by arranging a filter device, a sedimentation device, a water inlet pipe, a first water pump assembly and a stirring device A special device for zero-discharge treatment of domestic sewage with recycling value or reuse after treatment can be formed. Specifically, the water inlet pipe is used to transport the domestic sewage to be treated into the filter device; Filtration; the first water pump assembly is used to transport the domestic sewage to be treated after filtering by the filter device into the sedimentation device; the sedimentation device and the stirring device cooperate together to precipitate and remove impurities from the domestic sewage to be treated, so that the sewage to be treated can be treated into a reusable Valuable water in other occasions; in addition, by setting the stirring rod as a hollow rod, and setting the medicine pack in the stirring rod, when the stirring rod is rotating, the medicine pack will move to the conical knife under the action of centrifugal force position, the conical knife is used to pierce the medicine bag, and then the water purification agent in the medicine bag will diffuse into the sedimentation box through the powder hole. The treated domestic sewage is fully mixed, so that the impurities in the domestic sewage to be treated can be completely precipitated; in general, the utility model can filter and precipitate the treated domestic sewage, that is, the wastewater, and in the precipitation process, the water purification agent can be It is fully mixed with the domestic sewage to be treated, and the treated domestic sewage can be used in other occasions to achieve zero discharge of wastewater.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the partially enlarged structural representation at A in Fig. 1;

Fig. 3 is the partial enlarged structural representation at B in Fig. 1;

Fig. 4 is the structural representation of part device in Fig. 1;

FIG. 5 is a partially enlarged structural schematic diagram of C in FIG. 4 .

Reference numerals: 1, chassis; 2, filter device; 21, filter box; 22, threaded rod; 23, filter barrel; 24, filter hole; 25, feed hole; 26, lug; 27, return spring; 28 , locking nut; 3, sedimentation device; 31, sedimentation box; 32, outrigger; 33, second switch valve; 34, outlet pipe; 35, tapered hole; 36, blanking box; 4, universal wheel; 5. The first water pump assembly; 51, the mounting plate; 52, the first water pump; 53, the first water pipe; 54, the second water pipe; 55, the first reinforcement rod; 6, the second water pump assembly; 61, L type connecting plate; 62, reinforcing plate; 63, second water pump; 64, third water pipe; 65, fourth water pipe; 66, second reinforcing rod; 7, water inlet pipe; 71, first switch valve; 8, stirring device; 81, connecting plate; 82, stirring motor; 83, stirring shaft; 84, stirring rod; 85, rod cap; 86, conical knife; 87, powder hole; 88, connecting bolt; 9, medicine bag.

Detailed ways

In order to make the objectives, technical solutions and beneficial effects of the present utility model clearer, the embodiments of the present utility model are further described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1 to 5 , the present invention provides a zero-discharge treatment device for waste water, comprising a horizontally arranged chassis 1, and four corners of the bottom surface of the chassis 1 are provided with universal wheels 4 with a self-locking function. The universal wheel 4 can form a movable trolley. The top surface of the chassis 1 is provided with a filter device 2 and a sedimentation device 3 in turn. The filter device 2 is connected with a water inlet pipe 7 with a first on-off valve 71. In opening and closing the water inlet channel in the water inlet pipe 7, the filter device 2 is communicated with the sedimentation device 3 through the first water pump assembly 5, and the sedimentation device 3 includes a vertical settling tank 31 with an opening on the top surface. The stirring device 8 is detachably and fixedly connected, and the front of the sedimentation box 31 is inlaid with a transparent glass plate. The function of the transparent glass plate is to facilitate the observation of the sedimentation degree of the sewage to be treated in the sedimentation box 31. The four corners of the outer bottom surface of the sedimentation box 31 are provided with vertical Straight and opposite outriggers 32, and the bottom end of the outriggers 32 is fixedly connected to the top surface of the chassis 1, and the inner bottom surface of the sedimentation tank 31 is connected with a water outlet pipe 34 with a second switch valve 33, and the second switch valve 33 is used for opening. The water outlet channel in the water outlet pipe 34 is closed, and the water outlet pipe 34 is first used to discharge the precipitated impurities at the bottom of the sedimentation tank 31, and then used to discharge the treated domestic sewage in the sedimentation tank 31; the stirring device 8 includes a horizontally arranged connecting plate 81, The bottom surface of the connecting plate 81 and the top surface of the sedimentation tank 31 are detachably and fixedly connected by connecting bolts 88, and a vertically distributed stirring motor 82 is installed on the top surface of the connecting plate 81. The output shaft of the stirring motor 82 penetrates the connecting plate 81 and is rotatably connected with the The stirring shaft 83 is arranged on the coaxial line of the output shaft of the stirring motor 82. The stirring machine 82 is the power source for the rotation of the stirring shaft 83. The stirring shaft 83 is located in the sedimentation tank 31 and is arranged on the coaxial line with the sedimentation tank 31. The stirring shaft 83 is from top to bottom. There are several groups of stirring rods 84 equidistantly distributed and arranged horizontally, and the number of each group of stirring rods 84 is two, and the two stirring rods 84 are symmetrically distributed on both sides of the stirring shaft 83, and the stirring rods 84 are hollow rods and stirring The rod 84 is provided with a medicament pack 9, and the medicament pack 9 is filled with water purification medicaments such as flocculation and sedimentation medicament. 84, the other end of the stirring rod 84 is open and the open end of the stirring rod 84 is threadedly connected with a rod cap 85, the inner side of the rod cap 85 is provided with a conical knife 86 for piercing the medicine pack 9, and the stirring rod 84 on the inner side of the conical knife 86 A number of powder medicine holes 87 are opened on the wall.

By setting the chassis 1 and setting the universal wheel 4 on the bottom surface of the chassis 1, a mobile trolley can be formed, so as to facilitate the movement of the position of the zero-discharge treatment device for wastewater. 5 and the stirring device 8 can form a special device for zero-discharge treatment of domestic sewage with recycling value or reuse after treatment. Specifically, the water inlet pipe 7 is used to transport the domestic sewage to be treated into the filter device 2; the filter device 2 is used to filter the domestic sewage to be treated; the first water pump assembly 5 is used to transport the domestic sewage to be treated after being filtered by the filter device 2 into the sedimentation device 3; impurities, so that the sewage to be treated can be treated into valuable water that can be reused in other occasions; in addition, by setting the stirring rod 84 as a hollow rod, and setting the medicine pack 9 in the stirring rod 84, when the stirring rod 84 is rotating During the process, the medicine pack 9 will move to the position of the conical knife 86 under the action of centrifugal force, and the conical knife 86 will pierce the medicine pack 9, and then the water purification agent in the medicine pack 9 will pass through the powder hole 87 to the sedimentation box. 31, since the stirring rods 84 are equally spaced from the top to the bottom along the stirring shaft 83, the water purification agent can be fully mixed with the domestic sewage to be treated, so that the impurities in the domestic sewage to be treated can be completely precipitated; The utility model can filter and precipitate the domestic sewage to be treated, that is, the wastewater, and can fully mix the water purification agent with the domestic sewage to be treated during the sedimentation process, and the treated domestic sewage can be used in other occasions to realize the waste water. of zero emissions.

Further, as shown in FIG. 1 and FIG. 3 , the inner bottom surface of the sedimentation tank 31 is provided with a conical hole 35 with a wide top and a narrow bottom, and the water outlet pipe 34 is vertically distributed and connected with the top end of the water outlet pipe 34 and the bottom end of the conical hole 35 The conical hole 35 facilitates the sliding of precipitated impurities into the water outlet pipe 34; in addition, the bottom plate 1 under the water outlet pipe 34 is provided with a detachable drop box 36 with an open top surface, and the drop box 36 is a drawer-type structure Specifically, the blanking box 36 is slidably connected with the legs 32 , and the blanking box 36 is used to contain the precipitated impurities discharged from the water outlet pipe 34 .

The specific structure of the filter device 2 is as follows: as shown in Figures 1 and 2, the filter device 2 includes a filter box 21 with an opening on the top surface, and the filter box 21 is connected to the water inlet pipe 7. The top of the filter box 21 is connected, the water inlet pipe 7 is used to transport the domestic sewage to be treated into the filter box 21, the filter box 21 and the sedimentation box 31 are communicated through the first water pump assembly 5, and the front of the filter box 21 is inlaid with a transparent glass plate , the function of the transparent glass plate is to facilitate the observation of the filtration degree of the domestic sewage to be treated by the filter box 21; the top surface of the filter box 21 outside the opening position is provided with two vertically oppositely distributed threaded rods 22, the two threaded rods 22 A filter barrel 23 with an opening on the top surface is slidably connected between the filter barrels 23. The filter barrel 23 penetrates the filter box 21 through the top surface opening of the filter box 21 and the bottom of the filter barrel 23 is located in the filter box 21. The bottom surface of the filter barrel 23 is provided with a number of circular arrays. Distributed filter holes 24, the barrel body of the filter barrel 23 is vertically provided with a number of equally spaced feeding holes 25 along the circumference of the filter barrel 23, the feeding holes 25 are located in the middle of the filter barrel 23, and the top of the filter barrel 23 is located at the middle of the filter barrel 23. Outside the filter box 21 and on both sides of the top of the filter barrel 23 are provided with lugs 26, the lugs 26 are respectively sleeved on the threaded rod 22 and are slidably connected with the threaded rod 22, and the threaded rods 22 below the lugs 26 are sleeved There is a return spring 27, and the threaded rod 22 above the lug 26 is threadedly connected with a locking nut 28. Specifically, when the filter box 21 is filled with the domestic sewage to be treated, the filter barrel 23 is manually pressed down. The lugs 26 on the bucket 23 will squeeze the return spring 27, and then the floating debris floating on the surface of the domestic sewage to be treated flows into the filter bucket 23 through the feeding hole 25, and after a period of time, the filter bucket 23 is released. , Under the action of the reset spring 27, the filter barrel 23 is reset, and the domestic sewage to be treated in the filter barrel 23 flows back into the filter box 21 through the filter hole 24, and then the filter barrel 23 is removed to pour out the floating debris. The degree of filtration is performed multiple times, and through this setting, the floating debris floating on the surface of the domestic sewage to be treated can be filtered.

The specific structure of the first water pump assembly 5 is as follows: as shown in FIG. 1 , the first water pump assembly 5 includes a vertically arranged mounting plate 51 , the mounting plate 51 is fixedly connected to the top surface of the filter box 21 , and the first water pump assembly 51 is mounted with a first Water pump 52, a first water passage 53 is communicated between the first water pump 52 and the filter box 21, and the bottom end of the first water passage 53 is located at the bottom of the filter box 21, and a second water passage is communicated between the first water pump 52 and the sedimentation tank 31. The water pipe 54 and the end of the second water pipe 54 away from the first water pump 52 are located at the top of the sedimentation tank 31. Specifically, the first water pump 52 is used to open and close the circulation between the first water pipe 53 and the second water pipe 54. In addition , in order to ensure the stability of the second water passage 54, a first reinforcing rod 55 can be arranged between the second water passage 54 and the mounting plate 51. Through this arrangement, the first water pump assembly 5 can be transported to the sedimentation device 3. The domestic sewage to be treated after being filtered by the filtering device 2.

Since the water outlet pipe 34 is first used to discharge the precipitated impurities at the bottom of the sedimentation tank 31, and then used to discharge the treated domestic sewage in the sedimentation tank 31, a small amount of precipitated impurities will still be doped in the treated domestic sewage. Therefore, as shown in the figure As shown in 1, the side of the sedimentation device 3 away from the filter device 2 is communicated with a second water pump assembly 6. When the sedimentary impurities at the bottom of the sedimentation tank 31 are discharged from the water outlet pipe 34, the second water pump assembly 6 is used to discharge the sediment to the outside. The treated domestic sewage in the tank 31 can reduce the precipitation impurities doped in the treated domestic sewage. The specific structure of the second water pump assembly 6 is as follows: the second water pump assembly 6 includes an L-shaped connecting plate 61, and the L-shaped connecting plate 61 The transverse plate of the L-shaped connecting plate 61 is fixedly connected to the top of the sedimentation tank 31, and a reinforcing plate 62 is provided between the transverse plate of the L-shaped connecting plate 61 and the sedimentation tank 31. The reinforcing plate 62 is used to improve the connection between the L-shaped connecting plate 61 and the sedimentation tank 31. For stability, a second water pump 63 is installed on the vertical plate of the L-shaped connecting plate 61 , a third water passage pipe 64 is connected between the second water pump 63 and the sedimentation tank 31 , and the bottom end of the third water passage pipe 64 is located in the sedimentation tank 31 . The bottom of the second water pump 63 is also connected with a fourth water passage pipe 65, and the fourth water passage pipe 65 is vertically distributed. In addition, in order to ensure the stability of the third water pipe 64, a second reinforcing rod 66 can be arranged between the third water pipe 64 and the vertical plate of the L-shaped connecting plate 61. , through such an arrangement, the second water pump assembly 6 discharges the treated domestic sewage in the sedimentation tank 31 to the outside, and when the second water pump assembly 6 is used to discharge water to the outside, the water storage tank can be placed at the outlet end of the fourth water pipe 65. below.

Since domestic sewage with recycling value or reusable after treatment contains relatively few pollutants or harmful substances, such domestic sewage can be used in other occasions after filtering, precipitation and impurity removal, such as Used to sprinkle water on pavements to clean pavements or use water for firefighting.

The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principles of the present invention, and the present invention is not departing from the spirit and scope of the present invention. There will also be various changes and improvements that fall within the scope of the claimed utility model. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. a waste water zero-discharge treatment device, comprising a horizontally arranged chassis, the four corners of the bottom surface of the chassis are provided with universal wheels with self-locking function, it is characterized in that: the top surface of the chassis is sequentially provided with a filter device and a A precipitation device, the filter device is connected with a water inlet pipe with a first on-off valve, the filter device and the precipitation device are communicated through a first water pump assembly, the precipitation device comprises a vertical settling tank with an open top surface, the precipitation device The opening position of the top surface of the box is detachably connected with a stirring device, the front of the sedimentation box is inlaid with a transparent glass plate, the four corners of the outer bottom surface of the sedimentation box are provided with vertically oppositely distributed outriggers, and the bottom ends of the outriggers are fixedly connected to the top surface of the chassis , the inner bottom surface of the sedimentation tank is connected with a water outlet pipe with a second on-off valve, the stirring device includes a horizontally arranged connecting plate, the bottom surface of the connecting plate is detachably and fixedly connected to the top surface of the sedimentation tank, and the top surface of the connecting plate is installed There are vertically distributed stirring motors, and the output shaft of the stirring motor penetrates the connecting plate and is rotatably connected with a stirring shaft arranged coaxially with the output shaft of the stirring motor. The stirring shaft is located in the sedimentation box and is coaxial with the sedimentation box. There are several groups of stirring rods that are equidistantly distributed and horizontally arranged on the stirring shaft from the top to the bottom. The number of each group of stirring rods is two, and the two stirring rods are symmetrically distributed on both sides of the stirring shaft. It is a hollow rod and a medicament bag is arranged in the stirring rod. One end of the stirring rod close to the stirring shaft is threadedly connected with the stirring shaft. The other end of the stirring rod is open and the open end of the stirring rod is threadedly connected with a rod cap. A conical knife for piercing the medicine bag, and a plurality of powder medicine holes are opened on the wall of the stirring rod on the inner side of the conical knife. 2 . The zero-discharge treatment device for waste water according to claim 1 , wherein the inner bottom surface of the sedimentation tank is provided with a conical hole with a wide top and a narrow bottom, and the water outlet pipe is vertically distributed and connected with the water outlet pipe. 3 . The top end is communicated with the bottom end of the tapered hole, and the bottom plate below the water outlet pipe is provided with a detachable drop box with an open top surface, and the drop box is a drawer structure. 3 . The zero-discharge treatment device for wastewater according to claim 1 , wherein the filter device comprises a filter box with an opening on the top surface, the filter box is connected to the water inlet pipe, and the filter box and the sedimentation box are connected. 4 . They are connected through the first water pump assembly, the front of the filter box is inlaid with a transparent glass plate, the top surface outside the opening of the filter box is provided with two vertically oppositely distributed threaded rods, and a top surface opening is slidably connected between the two threaded rods. The filter barrel passes through the filter box through the opening on the top surface of the filter box and the bottom of the filter barrel is located in the filter box. The bottom surface of the filter barrel is provided with a number of filter holes distributed in a circular array. A number of equally spaced feeding holes are vertically opened in the circumferential direction of the barrel, the top of the filter barrel is located outside the filter box, and both sides of the top of the filter barrel are provided with lugs, which are respectively sleeved on the threaded rod and connected to the threaded rod. The threaded rods are slidably connected, the threaded rods below the support lugs are all sleeved with return springs, and the threaded rods above the support lugs are all threadedly connected with locking nuts. 4 . The zero-discharge treatment device for wastewater according to claim 3 , wherein the first water pump assembly comprises a vertically arranged mounting plate, the mounting plate is fixedly connected to the top surface of the filter box, and the mounting plate is fixed on the top surface of the filter box. A first water pump is installed, a first water passage is connected between the first water pump and the filter box, and the bottom end of the first water passage is located at the bottom of the filter box, and a second water passage is communicated between the first water pump and the sedimentation tank And the end of the second water passage pipe away from the first water pump is located at the top of the sedimentation tank. 5 . The zero-discharge treatment device for wastewater according to claim 3 , wherein a second water pump assembly is communicated with a side of the sedimentation device away from the filter device, and the second water pump assembly comprises an L-shaped connecting plate, 6 . The lateral plate of the L-shaped connecting plate is fixedly connected to the top of the sedimentation tank, a reinforcing plate is arranged between the lateral plate of the L-shaped connecting plate and the sedimentation tank, and a second water pump is installed on the vertical plate of the L-shaped connecting plate. A third water passage is connected between the second water pump and the sedimentation tank, and the bottom end of the third water passage is located at the bottom of the sedimentation tank. The second water pump is also connected with a fourth water passage, and the fourth water passage is vertically distributed.

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