Sewage air flotation scum defoaming equipment

Abstract

The utility model discloses sewage air flotation scum defoaming equipment, and relates to the field of sewage treatment. The utility model relates to sewage air flotation scum defoaming equipment, which comprises a defoaming tank, an air flotation tank, an air flotation tank, an air flotation tank, an air flotation tank, an air flotation tank, an air flotation tank, an air flotation tank, an air flotation tank, an air flotation tank and an air flotation tank, and is characterized in that a feeding hole is formed in the upper end of the defoaming tank; the rotating hollow pipe is vertically and rotatably connected to a central shaft in the defoaming tank; when the slag scraper is used for scraping air flotation scum into the slag pool, the air flotation scum can firstly enter the defoaming tank, then the rotating hollow pipe can be controlled to rotate, and then the rotating hollow pipe can automatically add a defoaming agent into the defoaming tank through the conveying assembly. Meanwhile, the rotating stirring rod can drive the stirring rod to rotate to stir the air flotation scum, so that the defoaming agent and the air flotation scum are uniformly mixed, the defoaming effect and the defoaming speed of the defoaming agent on foam in the air flotation scum are improved, the rotating stirring rod can scatter the foam, and the defoaming efficiency of the foam is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to sewage air flotation scum defoaming equipment. Background Art

[0002] In the sewage treatment process, flotation equipment is often used to reduce the suspended solids in the sewage. The flotation equipment uses the principle of incorporating a large number of tiny bubbles into the water body to float the suspended solids in the water. The scum produced by the equipment contains a large number of tiny bubbles. In actual production, the scum produced by the flotation equipment is often mixed into the sludge produced by the entire sewage treatment system, and then mixed together and enter the dehydration system. Because the flotation scum contains a large number of tiny bubbles, it is not conducive to sludge conditioning, which will affect the sludge conditioning effect and the operation of the dehydration equipment, resulting in the sludge dryness not meeting the standard after dehydration, especially for the pressing dehydration equipment (such as belt machine, disc screw machine, plate and frame filter press). For example, the flotation scum is pumped into the plate and frame filter press. Because the scum contains a large number of tiny bubbles, it is not conducive to passing through the gaps in the filter cloth, which will directly lead to the blockage of the filter cloth of the plate and frame filter press, resulting in the sludge being unable to be dehydrated.

[0003] In order to avoid the influence of scum on sludge dehydration, in actual operation, a long-time standing method is often used to allow the scum to defoam naturally. This method requires increasing the scum storage space and standing time. There is also a method of using stirring blades to stir the air-floating scum to defoam the foam in the air-floating scum. Although this method can also achieve a certain defoaming effect, the foam in the air-floating scum is small, so there will still be a lot of foam in the air-floating scum after treatment. In view of this, the present utility model is specially proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a sewage flotation scum defoaming device which can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: a sewage flotation slag defoaming equipment, comprising: a defoaming tank, a feed port is provided at the upper end of the defoaming tank, a discharge pipe is provided at the bottom of the defoaming tank, and a first solenoid valve is provided at the discharge pipe; a rotating hollow tube, vertically rotatably connected to the central axis inside the defoaming tank; a motor, fixedly connected to the defoaming tank, a first gear is fixedly connected to the output end of the motor, and a second gear meshing with the first gear is fixedly connected to the rotating hollow tube; a plurality of rows of stirring rods, equidistantly fixedly connected to the rotating hollow tube; a defoaming agent box, installed on the defoaming tank; a conveying component for conveying the defoaming agent in the defoaming agent box into the rotating hollow tube, installed on the side of the defoaming agent box close to the rotating hollow tube; a discharge port is provided on the side wall of the rotating hollow tube, and a pressure valve is provided in the discharge port.

[0006] Furthermore, the conveying assembly includes a suction cylinder, a piston plate, a reciprocating screw and a connecting rod, the suction cylinder is fixedly connected to the defoaming agent box, the piston plate is slidably connected in the suction cylinder, the reciprocating screw is rotatably connected to the lower end of the suction cylinder, the connecting rod is threadedly connected to the reciprocating screw through a movable sleeve, the lower end of the reciprocating screw is connected to a third gear through a ratchet, the third gear is meshed with the second gear, the upper end of the connecting rod upwardly penetrates the suction cylinder and is fixedly connected to the piston plate, the suction and discharge ports of the suction cylinder are respectively connected to a suction pipe and a discharge pipe, a one-way valve is provided in the suction and discharge ports of the suction cylinder, the suction end of the suction pipe extends into the defoaming agent box, and the discharge end of the discharge pipe extends into the rotating hollow tube.

[0007] In order to facilitate the delivery of defoaming agent to the floating slag at different depths, further, a plurality of storage chambers are equidistantly arranged in the rotating hollow tube, the rotating hollow tube and the plurality of storage chambers are connected in sequence through through openings, a second solenoid valve is arranged in the through openings, and the discharge ports are equidistantly arranged in a circle on the side wall of each storage chamber.

[0008] In order to further improve the defoaming effect on the air-floating scum, further, a plurality of rows of defoaming needles are fixedly connected to the stirring rod at equal intervals in a circle.

[0009] In order to improve the discharge efficiency of floating slag, the discharge pipe is further arranged at equal intervals in a circle at the bottom of the defoaming tank, the lower end of the defoaming tank is fixedly connected to a guide seat, and the lower end of the stirring rod located at the lowest end is fixedly connected to a scraper through a support rod, and the scraper slides against the bottom of the defoaming tank and the guide seat.

[0010] In order to facilitate the staff to check the defoaming condition of the flotation scum, further, an observation window is fixedly connected to the defoaming tank.

[0011] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model cooperates with the defoaming tank, the rotating hollow tube, the motor, the first gear, the second gear, the stirring rod, the defoaming agent box and the conveying assembly and other components. When the scraper scrapes the air-floating scum into the slag pool, the air-floating scum can be firstly entered into the defoaming tank, and then the rotating hollow tube can be controlled to rotate, and then the rotating hollow tube can automatically add the defoaming agent into the defoaming tank through the conveying assembly. At the same time, the rotating stirring rod will drive the stirring rod to rotate, stir the air-floating scum, and evenly mix the defoaming agent and the air-floating scum, thereby improving the defoaming effect and rate of the defoaming agent on the foam in the air-floating scum, and the rotating stirring rod can also break up the foam, further improving the defoaming efficiency of the foam.

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the attached picture:

[0014] Figure 1 It is a front view schematic diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the utility model;

[0016] Figure 3 It is a top view schematic diagram of the defoaming tank in the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the stirring rod and the defoaming needle in the utility model;

[0018] Figure 5 It is a structural schematic diagram of the reciprocating screw, the ratchet and the third gear in the utility model.

[0019] In the figure: 1. defoaming tank; 101. discharge pipe; 102. guide seat; 103. observation window; 2. rotating hollow tube; 201. storage chamber; 202. motor; 203. stirring rod; 204. defoaming needle; 205. scraper; 3. defoaming agent box; 301. suction cylinder; 302. piston plate; 303. reciprocating screw rod; 304. connecting rod; 305. ratchet; 306. third gear. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0021] Embodiment 1:

[0022] Reference Figure 1-Figure 5, a sewage flotation scum defoaming device, comprising: a defoaming tank 1, a feed inlet is provided at the upper end of the defoaming tank 1, a discharge pipe 101 is provided at the bottom of the defoaming tank 1, and a first solenoid valve is provided at the discharge pipe 101; a rotating hollow pipe 2, which is vertically rotatably connected to the central axis inside the defoaming tank 1; a motor 202, which is fixedly connected to the defoaming tank 1, a first gear is fixedly connected to the output end of the motor 202, and a second gear meshing with the first gear is fixedly connected to the rotating hollow pipe 2; a plurality of rows of stirring rods 203, which are equidistantly fixedly connected to the rotating hollow pipe 2; a defoaming agent box 3, which is installed on the defoaming agent box 1; a conveying component for conveying the defoaming agent in the defoaming agent box 3 into the rotating hollow pipe 2, which is installed on the side of the defoaming agent box 3 close to the rotating hollow pipe 2; a discharge port is provided on the side wall of the rotating hollow pipe 2, and a pressure valve is provided in the discharge port.

[0023] The conveying assembly includes a suction cylinder 301, a piston plate 302, a reciprocating screw rod 303 and a connecting rod 304. The suction cylinder 301 is fixedly connected to the defoaming agent box 3, the piston plate 302 is slidably connected in the suction cylinder 301, the reciprocating screw rod 303 is rotatably connected to the lower end of the suction cylinder 301, the connecting rod 304 is threadedly connected to the reciprocating screw rod 303 through a movable sleeve, the lower end of the reciprocating screw rod 303 is connected to a third gear 306 through a ratchet 305, the third gear 306 is meshed with the second gear, the upper end of the connecting rod 304 upwardly penetrates the suction cylinder 301 and is fixedly connected to the piston plate 302, the suction and discharge ports of the suction cylinder 301 are respectively connected to a suction pipe and a discharge pipe, and a one-way valve is provided in the suction and discharge ports of the suction cylinder 301, the suction end of the suction pipe extends into the defoaming agent box 3, and the discharge end of the discharge pipe extends into the rotating hollow tube 2.

[0024] Before using the device, first fix the device at the upper opening of the slag pool through the mounting bracket, and make the feed port of the defoaming tank 1 below the blanking end of the scraper, then fill the defoaming agent box 3 with defoaming agent, and power on the electrical components on the device before putting it into use. When the scraper conveys the air-floating slag mixed with foam into the defoaming tank 1, the motor 202 can be started at this time, and the motor 202 can drive the second gear to rotate through the first gear, and the second gear will simultaneously drive the hollow tube 2 and the third gear to rotate. When the wheel 306 rotates, the third gear 306 will drive the reciprocating screw 303 to rotate, and the reciprocating screw 303 will drive the piston plate 302 to move up and down in the suction cylinder 301 through the connecting rod 304, and then the defoaming agent in the defoaming agent box 3 can be extracted through the extraction pipe with the cooperation of the one-way valve, and the defoaming agent can be transported into the rotating hollow tube 2 through the discharge pipe. When a certain amount of defoaming agent is stored in the rotating hollow tube 2, the motor 202 can be controlled to reverse, and the motor 202 will drive the second gear through the first gear. Reverse rotation, since the ratchet 305 is connected between the third gear 306 and the reciprocating screw rod 303, when the second gear is reversed, the third gear 306 will idle and no longer drive the reciprocating screw rod 303 to rotate, thereby only driving the rotating hollow tube 2 to rotate, so that the power of the motor 202 can be increased, so that the rotating hollow tube 2 can rotate quickly, and then the defoaming agent in the rotating hollow tube 2 will open the pressure valve under the action of centrifugal force, and enter the floating slag in the defoaming tank 1 through the discharge port. At the same time, the rotating hollow tube 2 will also drive the stirring The moving rod 203 rotates rapidly to stir the floating scum, so that the defoaming agent and the floating scum can be evenly mixed, thereby improving the defoaming effect and rate of the defoaming agent on the foam in the floating scum, and the rotating stirring rod 203 can also break up the foam, further improving the defoaming efficiency of the foam. When the defoaming treatment of the floating scum is completed, the first solenoid valve in the discharge pipe 101 can be opened at this time, and then the treated floating scum will flow into the slag pool through the discharge pipe 101 for sedimentation, waiting for the next operation.

[0025] Embodiment 2:

[0026] Reference Figure 1-Figure 5 , a sewage flotation scum defoaming device, which is basically the same as embodiment 1, and further: a plurality of storage chambers 201 are equidistantly arranged in a rotating hollow tube 2, the rotating hollow tube 2 and the plurality of storage chambers 201 are sequentially connected through a through-hole, a second solenoid valve is arranged in the through-hole, and a discharge port is equidistantly arranged in a circle on the side wall of each storage chamber 201, by sequentially arranging a plurality of storage chambers 201 from top to bottom in the rotating hollow tube 2, and as Figure 2As shown, the rotating hollow tube 2 and the plurality of material storage chambers 201 are connected in sequence through the through openings. When the defoaming agent is transported into the rotating hollow tube 2, the second solenoid valve can be opened at this time, so that the same amount of defoaming agent can be stored in each material storage chamber 201. After the transport is completed, the second solenoid valve can be closed. Then, when the rotating hollow tube 2 is controlled to rotate, the defoaming agent will generate centrifugal force under the action of the rotation, so that the pressure valve can be opened, and then the defoaming agent can be thrown into the air-floating scum in the defoaming tank 1, and then can be evenly mixed in the air-floating scum under the stirring of the stirring rod 203, so as to defoam the foam in the air-floating scum. By equidistantly arranging the plurality of material storage chambers 201, the defoaming agent can be transported to the air-floating scum at different depths, so as to further improve the uniformity of mixing the defoaming agent and the air-floating scum, and further improve the defoaming effect on the foam in the air-floating scum.

[0027] The stirring rod 203 is circumferentially and equidistantly fixedly connected with a plurality of rows of defoaming needles 204. By arranging the defoaming needles 204 on the stirring rod 203, when the stirring rod 203 rotates, the foam can be punctured by the defoaming needles 204, thereby further improving the defoaming effect on the floating scum.

[0028] Embodiment 3:

[0029] Reference Figure 1-Figure 5 , a sewage flotation scum defoaming device, which is basically the same as Example 2, and further: a discharge pipe 101 is equidistantly arranged at the bottom of a defoaming tank 1 in a circle, and a guide seat 102 is fixedly connected to the lower end of the defoaming tank 1, and a scraper 205 is fixedly connected to the lower end of a stirring rod 203 located at the lowest end through a support rod, and the scraper 205 slides against the bottom of the defoaming tank 1 and the guide seat 102. Through the coordinated use of the guide seat 102 and the scraper 205, when the defoaming of the flotation scum is completed and the first solenoid valve is opened to discharge the flotation scum into the slag pool through the discharge pipe 101, the stirring rod 203 can be rotated to drive the scraper 205 to rotate through the support rod, so as to facilitate the scraping of the flotation scum to the discharge pipe 101, thereby improving the discharge efficiency of the flotation scum.

[0030] An observation window 103 is fixedly connected to the defoaming tank 1. Through the setting of the observation window 103, the staff can check the defoaming condition of the floating scum through the observation window 103, so as to facilitate the timely delivery of the floating scum into the slag pool for sedimentation, providing convenience for the staff.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention.

Claims

1. A sewage flotation scum defoaming device, characterized in that: include: A defoaming tank (1), wherein a feed port is provided at the upper end of the defoaming tank (1), a discharge pipe (101) is provided at the bottom of the defoaming tank (1), and a first solenoid valve is provided at the discharge pipe (101); Rotating the hollow tube (2) to vertically rotate and connect to the central axis inside the defoaming tank (1); A motor (202) is fixedly connected to the defoaming tank (1); an output end of the motor (202) is fixedly connected to a first gear; and a second gear meshing with the first gear is fixedly connected to the rotating hollow tube (2); A plurality of rows of stirring rods (203) are fixedly connected to the rotating hollow tube (2) at equal intervals; A defoaming agent box (3) installed on the defoaming tank (1); A conveying component for conveying the defoaming agent in the defoaming agent box (3) into the rotating hollow tube (2), which is installed on a side of the defoaming agent box (3) close to the rotating hollow tube (2); A discharge port is provided on the side wall of the rotating hollow tube (2), and a pressure valve is arranged in the discharge port.

2. A sewage flotation scum defoaming device according to claim 1, characterized in that: The conveying assembly comprises a suction cylinder (301), a piston plate (302), a reciprocating screw rod (303) and a connecting rod (304); the suction cylinder (301) is fixedly connected to the defoaming agent box (3); the piston plate (302) is slidably connected in the suction cylinder (301); the reciprocating screw rod (303) is rotatably connected to the lower end of the suction cylinder (301); the connecting rod (304) is threadedly connected to the reciprocating screw rod (303) through a movable sleeve; the lower end of the reciprocating screw rod (303) is screwed through a ratchet ( 305) is connected to a third gear (306), and the third gear (306) is meshed with the second gear. The upper end of the connecting rod (304) penetrates the suction cylinder (301) upward and is fixedly connected to the piston plate (302). The suction and discharge ports of the suction cylinder (301) are respectively connected to a suction pipe and a discharge pipe. A one-way valve is provided in the suction and discharge ports of the suction cylinder (301). The suction end of the suction pipe extends into the defoaming agent box (3), and the discharge end of the discharge pipe extends into the rotating hollow tube (2).

3. The sewage flotation scum defoaming equipment according to claim 1, characterized in that: A plurality of material storage chambers (201) are equidistantly arranged in the rotating hollow tube (2); the rotating hollow tube (2) and the plurality of material storage chambers (201) are sequentially connected via through openings; a second solenoid valve is arranged in the through openings; and the discharge openings are equidistantly arranged in a circle on the side wall of each material storage chamber (201) in a circle.

4. The sewage flotation scum defoaming equipment according to claim 3, characterized in that: The stirring rod (203) is fixedly connected with a plurality of rows of defoaming needles (204) at equal intervals in a circle.

5. The sewage flotation scum defoaming equipment according to claim 1, characterized in that: The discharge pipe (101) is arranged at equal intervals on the circumference at the bottom of the defoaming tank (1); the lower end of the defoaming tank (1) is fixedly connected to a flow guide seat (102); the lower end of the stirring rod (203) located at the lowest end is fixedly connected to a scraper (205) via a support rod; the scraper (205) is slidably attached to the bottom of the defoaming tank (1) and the flow guide seat (102).

6. The sewage flotation scum defoaming equipment according to claim 1, characterized in that: An observation window (103) is fixedly connected to the defoaming tank (1).

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