A sewage surface foam scum treatment system

Abstract

The present application relates to water pollution treatment technical field, especially sewage surface foam scum treatment system, including sewage pool, the sewage pool is fixedly connected with fixed frame, the fixed frame is fixedly connected with drive motor, the fixed frame rotationally arranged with two transmission rollers, two transmission rollers are around transmission belt, the output shaft of drive motor is fixedly connected with adjacent transmission roller, the outside of transmission belt is fixedly connected with a plurality of fishing material, the fixed frame is fixedly connected with first fixed plate and collection shell, the fishing material is provided with evenly distributed drainage hole, the fishing material is provided with evenly distributed drainage hole, the water in the fishing material is separated, the phenomenon of "liquid residue" is reduced, the relative stability of the liquid level in the sewage pool is maintained, the fishing material is continuously and efficiently captured, and the stability and continuity of the whole sewage treatment process are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water pollution treatment, and particularly relates to a sewage surface foam scum treatment system. BACKGROUND

[0002] In the modern field of water pollution treatment, a multi-stage treatment system is widely used to improve water purification efficiency and ensure that the effluent meets the discharge or reuse standards. In this system, the foam scum impurities in the sewage are first collected and treated by a scraper, and then the sewage is subjected to subsequent oxidation treatment and other remaining treatment operations.

[0003] However, in actual operation, the conventional scraper residue removal method has certain limitations. While removing the scum, this method often causes part of the upper clear liquid to be discharged together with the scum, forming a so-called "liquid discharge with scum" phenomenon. If this phenomenon persists for a long time, it will cause the liquid level in the sewage tank to continuously decrease, thereby reducing the height of the scum layer, making it difficult for the scum to be effectively captured at the residue discharge port, and reducing the residue removal efficiency. At the same time, the liquid discharged with the scum also needs to be subjected to additional oxidation treatment, which not only increases the burden on the subsequent process, but also reduces the overall operation efficiency of the multi-stage treatment system. SUMMARY

[0004] In order to overcome the problems presented in the background art, the present application provides a sewage surface foam scum treatment system.

[0005] The technical implementation scheme of the present application is: a sewage surface foam scum treatment system, comprising a sewage tank, the sewage tank is fixedly connected with a fixed frame, the fixed frame is fixedly connected with a driving motor, the fixed frame is rotatably provided with two transmission rollers, a transmission belt is wound between the two transmission rollers, the output shaft of the driving motor is fixedly connected with the adjacent transmission roller, the outer side of the transmission belt is fixedly connected with a plurality of fishing members distributed equidistantly in the circumferential direction, the fixed frame is fixedly connected with a first fixed plate and a collection shell, the first fixed plate is used for intercepting scum impurities, and the moving track of the fishing member has a section coinciding with the upper surface of the first fixed plate, so that the fishing member can fish the scum impurities intercepted by the first fixed plate.

[0006] The moving direction of the fishing member on the upper surface of the first fixed plate is opposite to the flow direction of the liquid medium in the sewage tank in the horizontal plane, the fishing member is provided with uniformly distributed liquid discharge holes, and the liquid discharge holes on the fishing member are used for discharging the water in the scum impurities fished by the fishing member.

[0007] Preferably, the outer surface of the transmission belt is fixedly connected with a plurality of elastic members distributed equidistantly in the circumferential direction, the plurality of elastic members and the plurality of fishing members are alternately distributed, the elastic members are V-shaped, and the elastic members are used for guiding the water on the surface of the transmission belt to flow to the side surface of the fixed frame.

[0008] Preferably, further comprising:

[0009] A sliding plate is slidingly arranged in the collecting shell, and springs are fixed between the sliding plate and the collecting shell.

[0010] Two symmetrical fixed rods are fixed to the upper part of the sliding plate, and the material collecting member is used to press the two fixed rods when moving.

[0011] Preferably, the sliding plate is provided with uniformly distributed through holes, and a gas-filled chamber is formed between the sliding plate and the collecting shell, and when the sliding plate moves, the gas in the chamber is sprayed out of the through holes.

[0012] Preferably, further comprising:

[0013] An electric push rod is fixed to the fixed frame, and a second fixed plate is fixed to the telescopic end of the electric push rod.

[0014] A sliding frame is slidingly arranged on the second fixed plate, and a tension spring is fixed between the sliding frame and the second fixed plate.

[0015] A pressing roller is rotatably arranged at the lower part of the sliding frame, and is used to press the floating impurities collected in the material collecting member.

[0016] Preferably, further comprising:

[0017] A third fixed plate is fixed to the lower part of the fixed frame, and is located below the first fixed plate.

[0018] A limiting member is fixed to the third fixed plate, and is fixed to the fixed frame, and the limiting member is provided with an inclined surface for guiding the floating impurities to gather at the included angle between the limiting member and the third fixed plate.

[0019] A material discharging unit is arranged on the limiting member, and is used to intermittently discharge the floating impurities gathered between the limiting member and the third fixed plate.

[0020] Preferably, the gap between the third fixed plate and the first fixed plate is gradually arranged to guide the liquid to flow quickly.

[0021] Preferably, the material discharging unit comprises:

[0022] A rotating shell is rotatably arranged on the limiting member, and is provided with a first liquid inlet, and the rotating shell and one of the transmission rollers are connected through a chain wheel and a chain.

[0023] A fixed shell is rotatably arranged in the rotating shell and is fixedly connected with the limiting piece, and the fixed shell is provided with a second liquid inlet and a liquid outlet, and the second liquid inlet is used for communicating with the first liquid inlet.

[0024] A baffle is fixedly connected in the rotating shell and is sealingly and rotatably connected with the fixed shell, and the baffle is provided with a fan-shaped hole, and the fan-shaped hole of the baffle is used for communicating with the liquid outlet.

[0025] Preferably, further comprising:

[0026] A guide plate is fixedly connected to the fixed frame and is fixedly connected with the limiting piece;

[0027] A fixed block is fixedly connected to the fixed frame and is fixedly connected with the collecting shell, and the fixed frame, the first fixed plate, the collecting shell, the third fixed plate, the limiting piece, the guide plate and the fixed block jointly constitute a serpentine channel, and the highest point of the upper surface of the guide plate is higher than the lowest point of the upper surface of the first fixed plate.

[0028] Preferably, the minimum gap between the guide plate and the fixed block is smaller than the minimum gap between the first fixed plate and the third fixed plate.

[0029] The present application has the following advantages:

[0030] 1. The present application separates the water in the floating sludge impurities through the liquid outlet hole on the fishing tool, reduces the phenomenon of "liquid carrying slag discharge", maintains the relative stability of the liquid level in the sewage pool, ensures the continuous and efficient capture of floating sludge impurities by the fishing tool, and also ensures the stability and continuity of the entire sewage treatment process;

[0031] 2. The floating sludge impurities collected in the fishing tool are ensured to fall into the collecting shell through the blocking of the sliding plate, effectively preventing the floating sludge impurities from falling back into the sewage and causing secondary pollution. This structure not only improves the completeness and efficiency of sludge collection, but also significantly reduces the interference with the subsequent treatment process, ensuring the continuous operation and treatment effect of the sewage treatment system;

[0032] 3. The water content of the floating sludge is further reduced through the extrusion of the floating sludge impurities in the fishing tool by the extrusion roller, thereby effectively reducing the water content of the floating sludge and reducing the treatment amount and difficulty of the waste liquid in the floating sludge;

[0033] 4. The impurities in the sewage during the process of the fishing tool collecting floating sludge impurities are collected through the guidance of the third fixed plate and the interception of the limiting piece, reducing the suspended impurity content in the subsequent sewage during the remaining treatment operation, thereby reducing the load of the subsequent treatment unit.

[0034] 5, the fixed frame, the first fixed plate, the collection shell, the third fixed plate, the limiting piece, the guide plate and the fixed block jointly constitute the serpentine channel to the diversion of sewage, when the sewage liquid surface drops, the sewage cannot flow through the serpentine channel, so that the sewage is gathered in the left part of the sewage tank, ensure that the sewage liquid surface is always higher than the lowest point of the upper surface of the first fixed plate, guarantee the continuous and stable collection of scum of the fishing material. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is the schematic diagram of the three-dimensional structure of the application;

[0036] Figure 2 It is the schematic diagram of the three-dimensional structure of the fixed frame and the transmission belt of the application;

[0037] Figure 3 It is the schematic diagram of the three-dimensional structure of the fishing material and the first fixed plate of the application;

[0038] Figure 4 It is the sectional view of the first fixed plate and the collection shell of the application;

[0039] Figure 5 It is the schematic diagram of the three-dimensional structure of the transmission belt and the elastic piece of the application;

[0040] Figure 6 It is the sectional view of the collection shell and the sliding plate of the application;

[0041] Figure 7 It is the schematic diagram of the three-dimensional structure of the second fixed plate and the sliding frame of the application;

[0042] Figure 8 It is the schematic diagram of the three-dimensional structure of the first fixed plate and the third fixed plate of the application;

[0043] Figure 9 It is the schematic diagram of the three-dimensional structure of the guide plate and the fixed block of the application;

[0044] Figure 10 It is the explosion diagram of the rotating shell and the fixed shell of the application.

[0045] Label name in the figure: 1, sewage tank, 2, fixed frame, 3, driving motor, 4, transmission roller, 5, transmission belt, 6, fishing material, 7, first fixed plate, 8, collection shell, 9, elastic piece, 10, sliding plate, 101, through hole, 11, spring, 12, fixed rod, 13, electric push rod, 14, second fixed plate, 15, sliding frame, 16, tension spring, 17, extrusion roller, 18, third fixed plate, 19, limiting piece, 20, rotating shell, 201, first liquid inlet, 21, fixed shell, 211, second liquid inlet, 212, liquid outlet, 22, baffle, 23, guide plate, 24, fixed block. DETAILED DESCRIPTION

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present application, and are not a limitation on the present application. Embodiments

[0047] The present embodiment discloses a sewage surface foam scum treatment system for treating the surface foam scum impurities of sewage.

[0048] Referring to Figures 1-4 As shown in the drawings, it comprises a sewage pool 1, a fixed frame 2 is fixedly connected in the right part of the sewage pool 1, a driving motor 3 is fixedly connected to the fixed frame 2 through a support, two transmission rollers 4 are rotationally arranged on the fixed frame 2, the arrangement mode of the two transmission rollers 4 is inclined relative to the horizontal plane, a transmission belt 5 is arranged between the two transmission rollers 4, the output shaft of the driving motor 3 is fixedly connected to the upper transmission roller 4, four fishing members 6 are fixedly connected to the outer surface of the transmission belt 5 in a circumferential equidistant manner (the number shown in the drawings is the number, and the actual number can be appropriately adjusted according to the requirements), a first fixed plate 7 and a collection shell 8 are fixedly connected to the fixed frame 2, the first fixed plate 7 is located below the transmission belt 5, the collection shell 8 is located on the right side of the transmission belt 5, the first fixed plate 7 is used for intercepting the scum impurities, the moving track of the fishing member 6 has a section coinciding with the upper surface of the first fixed plate 7, so that the fishing member 6 can fish the scum impurities intercepted by the first fixed plate 7, the upper surface of the first fixed plate 7 is divided into two sections, the two sections are inclined section and circular arc section; the moving direction of the fishing member 6 on the upper surface of the first fixed plate 7 is opposite to the flowing direction of the liquid medium in the sewage pool 1 in the horizontal plane, the fishing member 6 is provided with uniformly distributed liquid discharge holes (the scum impurities cannot be discharged from the liquid discharge holes, and a filter screen can also be installed in the fishing member 6), the liquid discharge holes on the fishing member 6 are used for discharging the water in the fished scum impurities. Referring to Figure 4 and Figure 5 As shown in the drawings, eight elastic members 9 are fixedly connected to the outer surface of the transmission belt 5 in a circumferential equidistant manner, two elastic members 9 are arranged between adjacent two fishing members 6, the elastic member 9 is V-shaped, the V-shaped end of the elastic member 9 points to the moving direction of the transmission belt 5, the front and rear ends of the elastic member 9 are smaller than the front and rear sides of the transmission belt 5, the elastic member 9 is arranged in an inclined manner, (taking the elastic member 9 with the reference number in the drawings as an example) the lower surface of the elastic member 9 is used for guiding the water on the surface of the transmission belt 5 to flow to the side surface of the fixed frame 2, the upper surface of the elastic member 9 is used for guiding the scum impurities falling on the surface of the transmission belt 5 to fall into the collection shell 8.

[0049] The working process of the sewage surface foam scum treatment in the present embodiment is as follows:

[0050] Firstly, the sewage with scum impurities is guided into the sewage pool 1, and the liquid level of the sewage is kept at a specified height in the sewage pool 1 (the liquid level of the sewage is located at the lower limit position to the upper surface of the first fixed plate 7), then the sewage is controlled to flow from left to right, and the driving motor 3 is started to drive the transmission belt 5 to rotate through the upper transmission roller 4, and the transmission belt 5 drives the four fishing members 6 and the eight elastic members 9 to move.

[0051] During the sewage flow, the foam scum is located on the upper surface of the sewage (a bubble generator can be arranged at the bottom of the sewage pool 1 to further assist the impurities in the sewage to float up), and the scum impurities on the upper surface of the sewage gather to the upper surface of the first fixed plate 7 under the action of the sewage flow, and at this time, the four fishing members 6 pass through the upper surface of the first fixed plate 7 in turn during the movement, so that the four fishing members 6 alternately fish the scum impurities gathered on the upper surface of the first fixed plate 7, wherein the fishing member 6 continues to move away from the contact with the sewage after fishing the scum impurities, at this time, under the action of the drainage hole on the fishing member 6, the sewage in the fishing member 6 flows downward and falls on the surface of the transmission belt 5, and at this time, under the guiding action of the elastic member 9, the sewage on the surface of the transmission belt 5 flows to the front and rear sides thereof (for example, in the reverse direction), and the liquid at the separation position flows along the fixed frame 2 and reflows into the sewage pool 1, in this process, the liquid is guided to flow along the fixed frame 2 and into the sewage pool 1, which reduces the impact of the sewage droplets on the scum impurities on the surface of the sewage in the sewage pool 1, so that the scum is re-suspended in the sewage. Figure 5

[0052] Then the fishing member 6 continues to move to the uppermost part, at this time, the fishing member 6 moves to be inclined, so that the scum impurities in the fishing member 6 are poured into the collection shell 8, and the collection operation of the scum impurities is completed, then the collected scum impurities are taken out from the collection shell 8 for further processing operation, and the sewage after the separation of the scum impurities flows out from the right part of the sewage pool 1, and the flowed-out sewage can be subjected to the existing sewage treatment steps.

[0053] In the above scum collection process, the drainage hole on the fishing member 6 makes the sewage in the fished scum reflow into the sewage pool 1, reduces the phenomenon of "liquid-containing scum discharge", maintains the relative stability of the liquid level in the sewage pool, and guarantees the continuous and efficient capture of the scum impurities by the fishing member. Embodiment

[0054] The embodiment discloses a sewage surface foam scum treatment system, which has the functions of reducing the residual scum in the fishing member 6 and preventing the scum from falling back into the sewage when the fishing member 6 pours the fished scum impurities on the basis of the embodiment 1.

[0055] On the basis of the embodiment 1, reference is made to Figure 4 and Figure 6 ​As shown, further comprising: a sliding plate 10, slidingly arranged in the left part of the collecting shell 8, four springs 11 being fixedly connected between the sliding plate 10 and the collecting shell 8; two symmetrical fixed rods 12, each being fixedly connected to the upper part of the sliding plate 10, and the two fixed rods 12 being located at the front and rear sides of the sliding plate 10, the material salvaging piece 6 being used to press and move the two fixed rods 12, in the initial state, the sliding plate 10 extends out of the collecting shell 8, and the upper surface of the collecting shell 8 is close to the transmission belt 5, as shown in the attached Figure 4 As shown, the sliding plate 10 is provided with uniformly distributed through holes 101, a chamber full of gas being formed between the sliding plate 10 and the collecting shell 8, when the sliding plate 10 moves, the gas in the chamber is sprayed out from the through holes 101, and the sprayed gas will blow the material salvaging piece 6.

[0056] The working process of the embodiment is continued from the embodiment 1, and the detailed description is as follows:

[0057] In the process of moving the material salvaging piece 6 to dump the floating impurities therein, under the blocking action of the sliding plate 10, the impurities are prevented from falling back onto the upper surface of the first fixed plate 7, and the floating impurities are ensured to fall into the collecting shell 8, and the subsequent material salvaging piece 6 continues to move to contact and press the two fixed rods 12 to move downward, so that the two fixed rods 12 and the sliding plate 10 move downward together and compress the springs 11, in the process of moving downward, the gas in the chamber composed of the sliding plate 10 and the collecting shell 8 is pressed to be sprayed out through the through holes 101, the sprayed gas impacts on the material salvaging piece 6, and the floating impurities in the material salvaging piece 6 are cleaned, at the same time, under the guiding action of the arc-shaped surface in the material salvaging piece 6, part of the sprayed gas is bent and sprayed into the collecting shell 8, so that the gas blows the fallen impurities to fall into the collecting shell 8, after the material salvaging piece 6 moves away from the pressing of the fixed rods 12, under the elastic action of the springs 11, the sliding plate 10 reversely moves to reset, and the subsequent remaining material salvaging pieces 6 contact the fixed rods 12 to repeat the above operation. Embodiment

[0058] The embodiment discloses a sewage surface foam floating impurity processing system, and on the basis of the embodiment 2, after the material salvaging piece 6 salvages the floating impurities, the system further has the function of further discharging the liquid in the salvaged floating impurities.

[0059] On the basis of the embodiment 2, referring to Figure 3 and Figure 7As shown, it further comprises: two electric push rods 13 (the number shown in the figure, the actual number can be adjusted according to actual conditions), both of which are fixedly connected to the fixed frame 2, and the telescopic ends of the two electric push rods 13 are fixedly connected with a second fixed plate 14; a sliding frame 15 is slidingly arranged on the second fixed plate 14, and two tension springs 16 are fixedly connected between the sliding frame 15 and the second fixed plate 14, both of which are sleeved on the sliding frame 15; an extrusion roller 17 is rotatably arranged at the lower part of the sliding frame 15, and the outer side of the extrusion roller 17 is provided with uniformly distributed protrusions, which is used for extruding the floating sludge impurities in the fishing member 6.

[0060] The working process of the embodiment is continued from the embodiment 2, and the detailed description is as follows:

[0061] When the fishing member 6 moves on the left side of the transmission belt 5, the electric push rod 13 is intermittently started, wherein the telescopic end of the electric push rod 13 first extends, so that the second fixed plate 14, the sliding frame 15 and the extrusion roller 17 move close to the transmission belt 5, and then the fishing member 6 moves into contact with the extrusion roller 17, wherein the extrusion roller 17 extrudes the floating sludge impurities in the fishing member 6, and at this time the telescopic end of the electric push rod 13 gradually retracts, so that the second fixed plate 14, the sliding frame 15 and the extrusion roller 17 gradually move away from the transmission belt 5. In this process, the extrusion roller 17 rotates to extrude and dewater the floating sludge impurities in the fishing member 6, and at the same time, under the action of the movement of the fishing member 6, the extrusion roller 17 and the sliding frame 15 move upward together and stretch the tension spring 16. When the extrusion roller 17 is separated from the contact with the fishing member 6, under the action of the tension of the tension spring 16, the extrusion roller 17 and the sliding frame 15 move reversely and reset. The subsequent electric push rod 13 repeats the above operation to process the next fishing member 6, further separates the liquid contained in the floating sludge impurities, thereby effectively reducing the water content of the floating sludge and reducing the processing amount and processing difficulty of the waste liquid in the floating sludge. Embodiment

[0062] The embodiment discloses a sewage surface foam floating sludge treatment system, which has the function of collecting the floating sludge settled in the sewage during the process of the fishing member 6 fishing the floating sludge impurities on the basis of the embodiment 3.

[0063] On the basis of the embodiment 3, referring to Figure 3 , Figure 8 and Figure 9 As shown, it further comprises: a third fixed plate 18 fixedly connected to the lower part of the fixed frame 2, and the third fixed plate 18 is located below the first fixed plate 7, and the first fixed plate 7 is located directly below the fishing position of the fishing member 6, as shown in the accompanying Figure 9As shown, the third fixed plate 18 and the first fixed plate 7 form a liquid passage with gradually smaller gap from left to right, for guiding the liquid to flow fast; the limiting piece 19 is fixed to the right side of the third fixed plate 18, and the limiting piece 19 is fixed to the fixed frame 2, the left side of the limiting piece 19 is provided with an inclined surface, which is used to guide the scum impurities to gather at the angle between the limiting piece 19 and the third fixed plate 18, in the initial state, the liquid level of the sewage in the sewage pool 1 is higher than the upper surface of the limiting piece 19; the discharging unit is arranged on the limiting piece 19, and the discharging unit is used to discharge the scum impurities gathered between the limiting piece 19 and the third fixed plate 18 intermittently.

[0064] Referring to Figure 8 and Figure 10 As shown, the discharging unit comprises: a rotating shell 20 rotatably arranged on the limiting piece 19, the left side of the rotating shell 20 is provided with a first liquid inlet 201, the rotating shell 20 and the upper transmission roller 4 are connected through a chain wheel and a chain transmission (the chain wheel and the chain are simple schematic in the drawing), and the transmission ratio of the chain wheel and the chain is greater than 1; a fixed shell 21 rotatably arranged in the rotating shell 20, and the rear part of the fixed shell 21 is fixed to the limiting piece 19, the left side and the front side of the fixed shell 21 are respectively provided with a second liquid inlet 211 and a liquid outlet 212, the second liquid inlet 211 is used to communicate with the first liquid inlet 201; a baffle 22 fixed to the front part of the rotating shell 20, and the baffle 22 is sealingly connected with the fixed shell 21, the baffle 22 is provided with a fan-shaped hole for communicating with the liquid outlet 212.

[0065] The working process of the embodiment is connected to the embodiment 3, and the detailed description is as follows:

[0066] In the process of skimming the floating impurities by the skimming member 6, part of the floating sludge is easily re-sedimented in the sewage under the extrusion of the skimming member 6. With the flow of the sewage, a small amount of the sedimented impurities will fall on the upper surface of the third fixed plate 18. The subsequent impurities will flow through the gap between the third fixed plate 18 and the first fixed plate 7 along with the sewage. Then, the flow rate of the sewage will slow down under the blocking action of the limiting member 19. At this time, the impurities in the sewage will gather between the limiting member 19 and the third fixed plate 18. Since the second liquid inlet 211 and the first liquid inlet 201 are connected at the beginning, part of the impurities will enter the fixed shell 21 through the second liquid inlet 211 and the first liquid inlet 201. In this process, the upper transmission roller 4 rotates to slowly rotate the rotating shell 20 through the sprocket and chain (affected by the transmission ratio). The rotation of the rotating shell 20 first makes the second liquid inlet 211 and the first liquid inlet 201 staggered. Subsequently, the rotating shell 20 continues to drive the baffle 22 to rotate, so that the fan-shaped holes on the baffle 22 are gradually connected with the liquid outlet 212. Then, the sewage and impurities in the rotating shell 20 are discharged to a designated container through the fan-shaped holes on the baffle 22 and the liquid outlet 212. Subsequently, the sewage is re-diverted to the sewage pool 1. The rotating shell 20 continues to rotate to intermittently seal and discharge the impurities gathered between the limiting member 19 and the third fixed plate 18. Embodiment

[0067] The embodiment discloses a sewage surface foam sludge treatment system. On the basis of embodiment 4, the system further has the function of automatically adjusting the liquid level of the sewage during the treatment of the foam sludge.

[0068] On the basis of embodiment 4, referring to Figure 8 and Figure 9 , the fixed frame 2 is fixedly connected with a guide plate 23 and a fixed block 24. The guide plate 23 is fixedly connected with the right side surface of the limiting member 19, and the fixed block 24 is fixedly connected with the lower surface of the collecting shell 8. The fixed frame 2, the first fixed plate 7, the collecting shell 8, the third fixed plate 18, the limiting member 19, the guide plate 23 and the fixed block 24 jointly constitute a serpentine channel. The highest point on the upper surface of the guide plate 23 is higher than the lowest point on the upper surface of the first fixed plate 7. The smallest gap between the guide plate 23 and the fixed block 24 is smaller than the smallest gap between the first fixed plate 7 and the third fixed plate 18. The injection amount of the sewage in the sewage pool 1 is equal to the sum of the flow rate through the gap between the lower surface of the guide plate 23 and the sewage pool 1 and the flow rate through the gap between the guide plate 23 and the fixed block 24, so as to ensure that the liquid level of the sewage in the sewage pool 1 remains relatively stable.

[0069] The working process of the embodiment is connected with embodiment 4, and is described in detail as follows.

[0070] In the process of treating the sewage surface foam scum, with the continuous fetching of the scum by the fetching part 6, the scum carries a small amount of sewage and is discharged together, and after a period of time, the liquid level in the sewage tank 1 will gradually be lower than the highest point of the upper surface of the guide plate 23, at this time the liquid will not flow through the serpentine channel, so that the sewage flow in the sewage tank 1 becomes smaller, but the injection amount of the sewage remains unchanged, so that the sewage re-collects in the left part of the sewage tank 1, automatically adjusts the sewage liquid level position in the sewage tank 1, ensures that the sewage liquid level position in the sewage tank 1 is within the range that can be fetched by the fetching part 6, and guarantees that the fetching part 6 continuously and stably collects the scum.

[0071] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical scope provided by the present application, which should be covered within the protection scope of the present application.

Claims

1. A wastewater surface foam scum treatment system, characterized in that, The system includes a sewage tank (1), a fixed frame (2) fixedly connected to the sewage tank (1), a drive motor (3) fixedly connected to the fixed frame (2), two transmission rollers (4) rotatably mounted on the fixed frame (2), a transmission belt (5) wound between the two transmission rollers (4), the output shaft of the drive motor (3) fixedly connected to the adjacent transmission rollers (4), a plurality of circumferentially equidistant material-collecting components (6) fixedly connected to the outer side of the transmission belt (5), a first fixed plate (7) and a collection shell (8) fixedly connected to the fixed frame (2), the first fixed plate (7) being used to intercept floating scum and impurities, and a section of the moving trajectory of the material-collecting component (6) coinciding with the upper surface of the first fixed plate (7) so that the material-collecting component (6) can collect the floating scum and impurities intercepted by the first fixed plate (7); The direction of movement of the material scooping component (6) on the upper surface of the first fixed plate (7) is opposite to the direction of flow of the liquid medium in the sewage tank (1) on the horizontal plane. The material scooping component (6) is provided with uniformly distributed drainage holes. The drainage holes on the material scooping component (6) are used to drain the water in the scum and impurities it scoops. A sliding plate (10) is slidably disposed inside the collection shell (8), and a spring (11) is fixedly connected between the sliding plate (10) and the collection shell (8). Two symmetrical fixed rods (12) are fixed to the upper part of the sliding plate (10), and the material scooping component (6) is used to squeeze the two fixed rods (12) to move during movement; The sliding plate (10) is provided with uniformly distributed through holes (101). A gas-filled chamber is formed between the sliding plate (10) and the collecting shell (8). When the sliding plate (10) moves, the gas in the chamber is ejected from the through holes (101).

2. The wastewater surface foam and scum treatment system according to claim 1, characterized in that, The outer surface of the transmission belt (5) is fixed with a plurality of elastic elements (9) distributed circumferentially. The plurality of elastic elements (9) and the plurality of material scooping elements (6) are alternately distributed. The elastic elements (9) are V-shaped and are used to guide the water on the surface of the transmission belt (5) to flow to the side of the fixed frame (2).

3. The wastewater surface foam and scum treatment system according to claim 1, characterized in that, it also... include: An electric push rod (13) is fixedly connected to the fixed frame (2), and a second fixed plate (14) is fixedly connected to the telescopic end of the electric push rod (13). A sliding frame (15) is slidably disposed on the second fixed plate (14), and a tension spring (16) is fixedly connected between the sliding frame (15) and the second fixed plate (14). The extrusion roller (17) is rotatably disposed at the lower part of the sliding frame (15). The extrusion roller (17) is used to extrude the scum and impurities retrieved from the material scooping component (6).

4. The wastewater surface foam and scum treatment system according to claim 1, characterized in that, it also... include: The third fixing plate (18) is fixed to the lower part of the fixing frame (2), and the third fixing plate (18) is located below the first fixing plate (7); The limiting member (19) is fixedly connected to the third fixing plate (18), and the limiting member (19) is fixedly connected to the fixing frame (2). The limiting member (19) is provided with an inclined surface, which is used to guide scum and impurities to gather at the angle between the limiting member (19) and the third fixing plate (18). The discharge unit is disposed on the limiting member (19) and is used to intermittently discharge the scum and impurities that accumulate between the limiting member (19) and the third fixing plate (18).

5. A wastewater surface foam and scum treatment system according to claim 4, characterized in that, The gap between the third fixing plate (18) and the first fixing plate (7) is gradually set to guide the rapid flow of liquid.

6. A wastewater surface foam and scum treatment system according to claim 4, characterized in that, The discharge unit includes: A rotating shell (20) is rotatably mounted on the limiting member (19). The rotating shell (20) is provided with a first liquid inlet (201). The rotating shell (20) is connected to one of the transmission rollers (4) via a sprocket and a chain drive. A fixed shell (21) is rotatably disposed inside the rotating shell (20), and the fixed shell (21) is fixedly connected to the limiting member (19). The fixed shell (21) is provided with a second liquid inlet (211) and a liquid outlet (212). The second liquid inlet (211) is used to communicate with the first liquid inlet (201). The baffle (22) is fixed inside the rotating shell (20), and the baffle (22) is sealed and rotatably connected to the fixed shell (21). The baffle (22) is provided with a fan-shaped hole, which is used to communicate with the drain port (212).

7. A wastewater surface foam and scum treatment system according to claim 6, characterized in that, it further... include: The guide plate (23) is fixedly connected to the fixed frame (2), and the guide plate (23) is fixedly connected to the limiting member (19); The fixing block (24) is fixed to the fixing frame (2) and the fixing block (24) is fixed to the collecting shell (8). The fixing frame (2), the first fixing plate (7), the collecting shell (8), the third fixing plate (18), the limiting member (19), the guide plate (23) and the fixing block (24) together form a serpentine channel. The highest point of the upper surface of the guide plate (23) is higher than the lowest point of the upper surface of the first fixing plate (7).

8. A wastewater surface foam and scum treatment system according to claim 7, characterized in that, The minimum gap between the guide plate (23) and the fixing block (24) is less than the minimum gap between the first fixing plate (7) and the third fixing plate (18).

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