A car washing machine wastewater treatment device

Abstract

The utility model relates to a kind of car washer wastewater treatment device, effectively solve the problem that car washer sewage treatment filter screen is easy to block, long settling time;The technical solution solved includes settling unit, and settling unit includes settling cylinder, and several layers of separation cylinder are coaxially installed in settling cylinder, from inside to outside, the layer number of separation cylinder is first layer to Nth layer, the total layer number of separation cylinder is odd, the lower end of the odd layer separation cylinder is provided with water tank, the upper end of the even layer separation cylinder is provided with water tank, the upper end of separation cylinder is equipped with first water inlet pipe and first water outlet pipe, the lower end of first water inlet pipe is located in the separation cylinder of first layer, the lower end of first water outlet pipe is located between the separation cylinder of outermost layer and settling cylinder, and first water outlet pipe is connected with first water pump;The utility model is filtered by multistage settling and fine sand layer, can effectively separate impurities, in addition, by flushing sand, sand can be quickly completed, solve the problem that filter screen of traditional filtering equipment is easy to block, and filter screen needs to be frequently disassembled and cleaned.

Description

Technical Field

[0001] This utility model relates to the field of car wash machines, specifically a wastewater treatment device for car wash machines. Background Technology

[0002] The wastewater from automatic car wash machines mainly contains impurities such as mud and sand. If it can be treated and recycled, it will achieve significant water conservation. Utility model patent application number CN202421585523.2 discloses a car wash machine with a wastewater filtration structure. It filters wastewater through three layers of filters and cleans the filters using a scraper on the first layer. To filter muddy water from car washes, ordinary filters are insufficient; extremely fine filters are needed to effectively remove mud and sand. However, these fine filters clog very quickly and are difficult to remove with a scraper, requiring frequent cleaning. Disassembling and cleaning the filter screen is very troublesome. The first-stage filter screen cleaned by the cleaning scraper in the aforementioned patent, which is the floor of the car wash, is generally made of metal grating, which mainly serves to allow water to pass through and bear the weight of vehicles, and has basically no filtering function. The fine filter screen simply cannot withstand the repeated crushing of vehicles, so setting up a scraper here is really useless. Therefore, using a filter screen to treat large amounts of mud and water is not a suitable method. The simplest and most effective way to deal with mud and water is to let it settle. However, for car wash machines that continuously produce mud and water, the continuous injection of sewage will affect the settling water in the settling equipment, thereby prolonging the settling time. Summary of the Invention

[0003] This utility model provides a wastewater treatment device for car wash machines, which aims to solve the problems of easy clogging of the filter screen and long settling time in the wastewater treatment of car wash machines.

[0004] The technical solution includes a settling unit, which includes a settling cylinder. Several layers of partition cylinders are coaxially installed inside the settling cylinder. The lower ends of the partition cylinders are in contact with the bottom of the settling cylinder. From the inside out, the number of partition cylinder layers is denoted as the first layer to the Nth layer. The total number of partition cylinder layers is odd. The lower end of the partition cylinder of the odd-numbered layer has a water passage groove, and the upper end of the partition cylinder of the even-numbered layer has a water passage groove. The upper end of the partition cylinder is provided with a first water inlet pipe and a first water outlet pipe. The lower end of the first water inlet pipe is located inside the partition cylinder of the first layer, and the lower end of the first water outlet pipe is located between the outermost partition cylinder and the settling cylinder. The first water outlet pipe is connected to a first water pump.

[0005] It also includes a filtration unit, which includes a filter cylinder with a second inlet pipe at the bottom and a second outlet pipe at the top. The first outlet pipe and the second inlet pipe are connected by a connecting pipe, and the second outlet pipe is connected to a second water pump. The filter cylinder is filled with a layer of fine sand.

[0006] The filter cylinder has a coarse stone layer at the bottom, a first fine stone layer above the coarse stone layer, fine sand above the first fine stone layer, and a second fine stone layer above the fine sand layer.

[0007] The settling cylinder has a bottom at its lower end, which consists of a funnel-shaped conical section and a straight cylindrical section connected to the upper end of the conical section. The straight cylindrical section is inserted into the lower end of the settling cylinder and slides against the inner wall of the settling cylinder, so that the bottom of the cylinder can move up and down. The lower end of the conical section is provided with a sludge discharge pipe.

[0008] The outer wall of the cylinder bottom and the outer wall of the settling cylinder are each provided with a raised edge, and several pneumatic cylinders are evenly distributed around the circumference between the two raised edges. The cylinder bottom is driven to rise and fall by the pneumatic cylinders.

[0009] All of the aforementioned separator cylinders are fixedly connected to the settling cylinder via several radial connecting rods.

[0010] The fine sand layer is provided with a mesh plate separating the fine stone layer at both the upper and lower ends. The mesh plate is fixed to the inner wall of the filter cylinder. The side wall of the filter cylinder is equipped with a third water inlet pipe, a third water outlet pipe, and a sand injection pipe corresponding to the fine sand layer.

[0011] In this invention, wastewater is first introduced into a sedimentation unit. Through multi-layered partition cylinders, the area is isolated, forming a multi-layered static water state under continuous wastewater injection. The wastewater undergoes multi-stage sedimentation in the sedimentation unit, effectively separating most solid impurities and greatly reducing the filtration pressure of the filtration unit. Then, it is introduced into the filtration unit, where it is filtered through the fine sand layer to separate small impurities that are not easy to settle, thus obtaining flushing water that can be recycled.

[0012] In addition, by flushing and removing sand, the sand can be replaced quickly, which greatly improves the efficiency of cleaning the filtration equipment and solves the trouble of disassembling and cleaning the filter screen of traditional filtration equipment. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention.

[0014] Figure 2 This is a perspective view of the present invention.

[0015] Figure 3 This is the front sectional view of the present invention.

[0016] Figure 4 This is a three-dimensional sectional view of the present invention. Detailed Implementation

[0017] Referring to the accompanying drawings, this utility model includes a settling unit, which includes a settling cylinder 1. Several layers of partition cylinders 2 are coaxially mounted inside the settling cylinder 1. The lower ends of the partition cylinders 2 are all in contact with the bottom 16 of the settling cylinder 1. The multiple layers of partition cylinders 2 divide the settling cylinder 1 into several annular regions. From the inside out, the number of partition cylinders 2 is denoted as the first layer to the Nth layer. The total number of partition cylinders 2 is odd. The lower end of the odd-numbered partition cylinders 2 has a water passage groove 3, and the upper end of the even-numbered partition cylinders 2 has a water passage groove 3. The upper end of the partition cylinders 2 is provided with a first water inlet pipe 4 and a first water outlet pipe 5. The lower end of the first water inlet pipe 4 is located inside the first layer of partition cylinders 2, and the lower end of the first water outlet pipe 5 is located between the outermost partition cylinder 2 and the settling cylinder 1. The first water outlet pipe 5 is connected to a first water pump 6.

[0018] Wastewater is introduced into the first-layer separator 2 through the first inlet pipe 4, and then enters the space between the second and first-layer separators 2 through the water passage 3 at the lower end of the first-layer separator 2. Solids in the wastewater settle at the bottom of the separator 2, so the water at the top of the second-layer separator 2 is relatively clear, which is the clear water after the first stage of sedimentation. Due to the obstruction of the first-layer separator 2, the clear water at the top of the second-layer separator 2 will not be mixed with the newly introduced wastewater from the first inlet pipe 4, nor will it be disturbed. The clear water at the top of the second-layer separator 2 overflows into the third-layer separator 2 through the water passage 3 at the upper end of the separator 2, and settles again in the third and fourth-layer separators 2. The water at the top of the fourth-layer separator 2 is the water after the second stage of sedimentation. Similarly, due to the obstruction of the third-layer separator 2, it will not be mixed with the water after the first stage of sedimentation. This process continues, with each two layers of separators 2 constituting one stage of sedimentation. Finally, the top of the area between the sedimentation tank 1 and the outermost separator 2 is the water after multiple stages of sedimentation, which is then extracted by the first outlet pipe 5.

[0019] It also includes a filtration unit, which includes a filter cylinder 7. The filter cylinder 7 has a second water inlet pipe 8 at the bottom and a second water outlet pipe 9 at the top. The first water outlet pipe 5 is connected to the second water inlet pipe 8 via a connecting pipe 10. The second water outlet pipe 9 is connected to a second water pump 11. The filter cylinder 7 is filled with a fine sand layer 12. The water that has settled through the sedimentation unit is introduced to the bottom of the filter cylinder 7, filtered by the fine sand, and then seeps to the top of the filter cylinder 7 and is then extracted by the second water outlet pipe 9.

[0020] The filter cylinder 7 has a coarse stone layer 13 at its lowest end, a first fine stone layer 14 above the coarse stone layer 13, fine sand above the first fine stone layer 14, and a second fine stone layer 15 above the fine sand layer 12. The coarse stone layer 13 is to buffer the water flow from the second inlet pipe 8 to prevent it from directly impacting the fine sand layer 12. The first fine stone layer 14 is to block the fine sand layer 12 and the coarse stone layer 13 to prevent a large amount of fine sand from seeping into the coarse stone layer 13. The second fine stone layer 15 is to prevent the fine sand from being washed away by the drainage flow from the second outlet pipe 9.

[0021] The settling cylinder 1 has a bottom 16 at its lower end. The bottom 16 consists of a funnel-shaped conical section and a straight cylindrical section connected to the upper end of the conical section. The straight cylindrical section is inserted into the lower end of the settling cylinder 1 and slides against the inner wall of the settling cylinder 1, so that the bottom 16 can move up and down. The lower end of the conical section is provided with a sludge discharge pipe 17. During normal settling, the lower ends of all the partition cylinders 2 are in contact with the conical section. When sludge discharge is required, the bottom 16 descends and disengages from the partition cylinders 2, and the sludge discharge pipe 17 is opened. All the settled sludge at the bottom of the annular area slides down the conical section and is discharged from the sludge discharge pipe 17.

[0022] The outer wall of the cylinder bottom 16 and the outer wall of the settling cylinder 1 are each provided with a raised edge 18, and a number of pneumatic cylinders 19 are evenly distributed around the circumference between the two raised edges 18, which drive the cylinder bottom 16 to rise and fall.

[0023] All of the aforementioned separator cylinders 2 are fixedly connected to the settling cylinder 1 via several radial connecting rods 20.

[0024] The fine sand layer 12 is provided with a mesh plate 21 at both the upper and lower ends to separate the fine stone layer. The mesh plate 21 is fixed to the inner wall of the filter cylinder 7. The side wall of the filter cylinder 7 is equipped with a third water inlet pipe 22, a third water outlet pipe 23, and a sand injection pipe 24 corresponding to the fine sand layer 12. The third water inlet pipe 22 and the third water outlet pipe 23 are normally closed by a switch valve. The sand injection pipe 24 is closed by a threaded end cap. When there is a lot of filtered material in the fine sand layer 12 and the permeability decreases, the third water inlet pipe 22 and the third water outlet pipe 23 are opened. Water is injected into the filter cylinder 7 through the third water inlet pipe 22. The fine sand is discharged from the third water outlet pipe 23 with the water flow. After the fine sand is discharged, the sand injection pipe 24 is opened and fine sand is injected into the filter cylinder 7 through the sand injection pipe 24, thereby completing the replacement of the fine sand layer 12. The two mesh plates 21 are to maintain the position of the fine stone layer. The discharged fine sand can be reused after washing.

[0025] In this invention, wastewater undergoes multi-stage sedimentation in the sedimentation unit and is then filtered through the fine sand layer 12 in the filtration unit, effectively separating impurities. In addition, by flushing and discharging sand, sand replacement can be completed quickly, solving the problem of easy clogging of filter screens in traditional filtration equipment, which requires frequent disassembly and cleaning of the filter screen.

Claims

1. A wastewater treatment device for a car wash machine, comprising a sedimentation unit, the sedimentation unit including a sedimentation cylinder (1), characterized in that, The settling cylinder (1) is coaxially equipped with several layers of partition cylinders (2). The lower ends of the partition cylinders (2) are in contact with the bottom (16) of the settling cylinder (1). From the inside to the outside, the number of partition cylinders (2) is recorded as the first layer to the Nth layer. The total number of partition cylinders (2) is odd. The lower end of the partition cylinder (2) of the odd-numbered layer has a water trough (3). The upper end of the partition cylinder (2) of the even-numbered layer has a water trough (3). The upper end of the partition cylinder (2) is provided with a first water inlet pipe (4) and a first water outlet pipe (5). The lower end of the first water inlet pipe (4) is located inside the partition cylinder (2) of the first layer. The lower end of the first water outlet pipe (5) is located between the outermost partition cylinder (2) and the settling cylinder (1). The first water outlet pipe (5) is connected to a first water pump (6).

2. The wastewater treatment device for a car wash machine according to claim 1, characterized in that, It also includes a filter unit, which includes a filter cylinder (7), with a second water inlet pipe (8) at the bottom and a second water outlet pipe (9) at the top. The first water outlet pipe (5) is connected to the second water inlet pipe (8) via a connecting pipe (10), and the second water outlet pipe (9) is connected to a second water pump (11). The filter cylinder (7) is filled with a layer of fine sand (12).

3. The wastewater treatment device for a car wash machine according to claim 2, characterized in that, The filter cylinder (7) has a coarse stone layer (13) at the bottom, a first fine stone layer (14) above the coarse stone layer (13), fine sand above the first fine stone layer (14), and a second fine stone layer (15) above the fine sand layer (12).

4. The wastewater treatment device for a car wash machine according to claim 1, characterized in that, The settling cylinder (1) has a bottom (16) at its lower end. The bottom (16) consists of a funnel-shaped conical section and a straight section connected to the upper end of the conical section. The straight section is inserted into the lower end of the settling cylinder (1) and slides against the inner wall of the settling cylinder (1), so that the bottom (16) can move up and down. The lower end of the conical section is provided with a sludge discharge pipe (17).

5. The wastewater treatment device for a car wash machine according to claim 4, characterized in that, The outer wall of the bottom of the cylinder (16) and the outer wall of the settling cylinder (1) are each provided with a raised edge (18), and several pneumatic cylinders (19) are evenly distributed around the circumference between the two raised edges (18). The cylinder bottom (16) is driven to rise and fall by the pneumatic cylinders (19).

6. The wastewater treatment device for a car wash machine according to claim 1, characterized in that, All of the aforementioned separators (2) are fixedly connected to the settling cylinder (1) via several radial connecting rods (20).

7. The wastewater treatment device for a car wash machine according to claim 3, characterized in that, The fine sand layer (12) is provided with a mesh plate (21) separating the fine stone layer at both the upper and lower ends. The mesh plate (21) is fixed to the inner wall of the filter cylinder (7). The side wall of the filter cylinder (7) is equipped with a third water inlet pipe (22) and a third water outlet pipe (23) corresponding to the fine sand layer (12), as well as a sand injection pipe (24).

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