Device for recovering phosphorus element in sludge

Abstract

The utility model belongs to the technical field of sludge treatment, and particularly relates to a device for recycling phosphorus in sludge, which comprises a treatment pond, a driving motor and a stirring paddle, the driving motor is mounted on the lower surface of the treatment pond, the power output end of the driving motor is in transmission connection with the stirring paddle, and a mounting frame is welded on the surface of the treatment pond. A hydraulic rod is mounted in the middle of the mounting frame, the end part of a piston rod of the hydraulic rod is connected with a pressing plate, the surface of the outer wall of the pressing plate is sleeved with a rubber frame, the rubber frame is propped against the surface of the inner wall of the treatment tank, guide frames are welded at corners of the upper surface of the treatment tank, and a vacuum pump is mounted on the mounting frame. The novel pressing plate can be used for sealing the treatment tank and pumping out air in the treatment tank, so that the inner cavity of the treatment tank is in a low-oxygen environment, rapid propagation of anaerobic organisms is facilitated, automatic dosing in a negative pressure state is realized, the use is more convenient, and the extraction efficiency of the phosphorus element can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge treatment, in particular to a device for recovering phosphorus elements in sludge. Background Art

[0002] Sludge is a solid sediment produced by the water and sewage treatment process. It contains a large amount of phosphorus and other substances that are easy to pollute the environment. Therefore, when treating sewage, the sludge needs to be digested first to dissolve the large amount of phosphorus in the sludge into the wastewater as much as possible. Then, the solid waste is filtered out and the phosphorus is recovered from the wastewater using a recovery device. It has been widely used in the field of sludge treatment.

[0003] A patent search revealed that publication number CN219907303U discloses a device for recovering phosphorus in sludge, which can automatically filter and clean phosphorus-containing precipitates in an electrolytic cell, thereby improving wastewater treatment efficiency. The device comprises an electrolytic cell, a working chamber is provided inside the electrolytic cell, and a proton exchange membrane is provided in the middle of the working chamber; the device also comprises a sedimentation filtration component, which comprises a sludge pump, a filter tank, a filter screen, a wastewater pump, a return pipe, a rotating motor and a rotating wheel. The sludge pump is installed at the left end bottom of the electrolytic cell, and the input end of the sludge pump is connected to the left end bottom of the working chamber. The filter tank is installed on the left side of the electrolytic cell, and the output end of the sludge pump is installed on the upper side of the filter tank. The filter screen is installed at the inner top of the filter tank. The wastewater pump is installed at the left end of the filter tank, and the input end of the wastewater pump is connected to the left end bottom of the filter tank. The input end and output end of the return pipe are respectively connected to the output end of the wastewater pump and the left end top of the working chamber.

[0004] The phosphorus in the sludge is treated by anaerobic bacteria. The treatment tank is an open structure, and oxygen will continuously enter the treatment tank, resulting in the inability of anaerobic bacteria to reproduce in large quantities, which will affect the recovery and treatment efficiency of the phosphorus in the sludge. In order to solve the above problem, this application proposes a device for recovering phosphorus in sludge. Utility Model Content

[0005] (1) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a device for recovering phosphorus from sludge. The pressure plate can seal the treatment pool and extract the air in the treatment pool, so that the inner cavity of the treatment pool is a low-oxygen environment, which is conducive to the rapid reproduction of anaerobic organisms. At the same time, it realizes automatic dosing under negative pressure, which is more convenient to use and can improve the extraction efficiency of phosphorus to solve the problems raised in the background technology.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a device for recovering phosphorus from sludge, comprising a treatment tank, a drive motor and a stirring paddle, wherein the drive motor is mounted on the lower surface of the treatment tank, the power output end of the drive motor is connected to the stirring paddle by transmission, a mounting frame is welded on the surface of the treatment tank, a hydraulic rod is mounted in the middle of the mounting frame, the piston rod end of the hydraulic rod is connected to a pressure plate, the outer wall surface of the pressure plate is sleeved with a rubber frame, and the rubber frame abuts against the inner wall surface of the treatment tank;

[0009] Guide frames are welded at the corners of the upper surface of the treatment tank;

[0010] A vacuum pump is installed on the mounting frame.

[0011] Preferably, the side wall surface of the treatment pool is connected to a dosing tank, and a connecting valve is installed at the bottom of the dosing tank.

[0012] Preferably, an upper cover is threadedly connected to the top surface of the dosing tank, and a force rod is integrally formed on the surface of the upper cover.

[0013] Preferably, a slag discharge port is provided at the bottom of the side wall of the treatment pool, and a cover plate is fixed to the surface of the slag discharge port by bolts.

[0014] Preferably, a negative pressure gauge is embedded on the surface of the treatment pool, and the negative pressure gauge is located above the slag discharge port.

[0015] Preferably, a limit frame is welded to the inner wall of the treatment tank, and the limit frame is located above the stirring paddle.

[0016] Preferably, the suction end of the vacuum pump is connected to a telescopic connecting pipe, and the bottom of the telescopic connecting pipe is conductively connected to the pressure plate.

[0017] The above technical solution of the utility model has the following beneficial technical effects:

[0018] 1. In the present invention, the pressure plate can seal the treatment pool. The air in the treatment pool can be extracted by combining a vacuum pump and a telescopic connecting pipe, so that the inner cavity of the treatment pool presents a low-oxygen environment, which is conducive to the rapid reproduction of anaerobic organisms. The magnesium agent and the hydrogen peroxide solution are injected into the dosing tank in sequence. The upper cover is connected to the top of the dosing tank with threads, which can seal the top of the clamping tank. The connecting valve is opened. Under the action of negative pressure, the liquid in the dosing tank can be quickly sucked into the treatment pool. The connecting valve is closed, which can realize automatic dosing under negative pressure. It is more convenient to use and can improve the extraction efficiency of phosphorus.

[0019] 2. The utility model adjusts the height of the pressure plate through a hydraulic rod to reduce the space in the treatment pool, which can reduce the time it takes for the vacuum pump to evacuate the treatment pool and is more energy-efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a device for recovering phosphorus from sludge according to the utility model;

[0021] Figure 2 This is a schematic cross-sectional view of a device for recovering phosphorus from sludge according to the present invention;

[0022] Figure 3 This is a schematic diagram of the pressure plate lifting structure of a device for recovering phosphorus from sludge in the utility model;

[0023] Figure 4 The utility model is a schematic diagram of the structure of a dosing tank of a device for recovering phosphorus from sludge.

[0024] Reference numerals:

[0025] 1. Treatment tank; 2. Drive motor; 3. Stirring paddle; 4. Mounting frame; 5. Hydraulic rod; 6. Pressure plate; 7. Rubber frame; 8. Guide frame; 9. Vacuum pump; 10. Telescopic connecting pipe; 11. Dosing tank; 12. Upper cover; 13. Force rod; 14. Connecting valve; 15. Slag discharge port; 16. Cover plate; 17. Negative pressure gauge; 18. Limit frame. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0027] like Figure 1-4 As shown, the present invention proposes a device for recovering phosphorus from sludge, comprising a treatment tank 1, a drive motor 2 and a stirring paddle 3. The drive motor 2 is mounted on the lower surface of the treatment tank 1, and the power output end of the drive motor 2 is transmission-connected to the stirring paddle 3. A mounting frame 4 is welded on the surface of the treatment tank 1, and a hydraulic rod 5 is mounted in the middle of the mounting frame 4. The piston rod end of the hydraulic rod 5 is connected to a pressure plate 6. The outer wall surface of the pressure plate 6 is sleeved with a rubber frame 7, and the rubber frame 7 abuts against the inner wall surface of the treatment tank 1.

[0028] Guide frames 8 are welded at the corners of the upper surface of the treatment tank 1;

[0029] A vacuum pump 9 is installed on the mounting frame 4 .

[0030] It should be noted that the filtrate extracted from the sludge is poured into the treatment tank 1, and the pressure plate 6 is pushed down by controlling the hydraulic rod 5. The pressure plate 6 will be inserted into the treatment tank 1, and the outer wall of the pressure plate 6 is fitted with the inner wall of the treatment tank 1 through the rubber frame 7. The rubber frame 7 can seal the connection between the pressure plate 6 and the treatment tank 1. The air in the treatment tank 1 can be extracted by matching the vacuum pump 9 and the telescopic connecting pipe 10, so that the inner cavity of the treatment tank 1 is in a low-oxygen environment, which is conducive to the rapid reproduction of anaerobic organisms. The magnesium agent and the hydrogen peroxide solution are injected in sequence. Enter the dosing tank 11, the upper cover 12 is connected to the top of the dosing tank 11 with a thread, the top of the clamping tank 11 can be sealed, and the connecting valve 14 is opened. Under the action of negative pressure, the liquid in the dosing tank 11 can be quickly sucked into the treatment tank 1, and the connecting valve 14 is closed, which can realize automatic dosing under negative pressure, making it more convenient to use. The driving motor 2 drives the stirring paddle 3, and the stirring paddle 3 can quickly stir and mix the filtrate, magnesium agent and hydrogen peroxide solution, thereby improving the extraction efficiency of phosphorus.

[0031] In this embodiment, if Figure 3 and Figure 4 As shown, the side wall surface of the treatment pool 1 is connected to a dosing tank 11, a connecting valve 14 is installed at the bottom of the dosing tank 11, and an upper cover 12 is threadedly connected to the top surface of the dosing tank 11. A force rod 13 is integrally formed on the surface of the upper cover 12.

[0032] It should be noted that the upper cover 12 can seal the dosing tank 11. After the liquid medicine in the dosing tank 11 is discharged, the pressure in the inner cavity of the dosing tank 11 is the same as that in the treatment pool 1. Under the action of negative pressure, it is difficult to open the upper cover 12. By adding the force rod 13, the opening of the upper cover 12 can be made more labor-saving.

[0033] In this embodiment, if Figure 3 As shown, a slag discharge port 15 is provided at the bottom of the side wall of the treatment tank 1 , and a cover plate 16 is fixed to the surface of the slag discharge port 15 by bolts.

[0034] It should be noted that after the phosphorus extraction is completed, the cover plate 16 is opened and the sludge can be quickly discharged through the slag discharge port 15.

[0035] In this embodiment, if Figure 1 As shown, a negative pressure gauge 17 is embedded on the surface of the treatment pool 1 , and the negative pressure gauge 17 is located above the slag discharge port 15 .

[0036] It should be noted that the negative pressure gauge 17 can monitor the negative pressure value in the treatment pool 1, which can improve safety during use.

[0037] In this embodiment, if Figure 2 As shown, a limit frame 18 is welded to the inner wall of the treatment tank 1 , and the limit frame 18 is located above the stirring paddle 3 .

[0038] It should be noted that the limiting frame 18 can limit the pressing plate 6 to prevent the pressing plate 6 from contacting the stirring paddle 3 .

[0039] In this embodiment, if Figure 1 As shown, the suction end of the vacuum pump 9 is connected to a telescopic connecting pipe 10 , and the bottom of the telescopic connecting pipe 10 is conductively connected to the pressure plate 6 .

[0040] It should be noted that the telescopic connecting pipe 10 can be telescoped and stretched, and can be stretched or compressed according to the lifting and lowering of the pressing plate 6 .

[0041] The working principle and use process of the utility model are as follows: the filtrate extracted from the sludge is poured into the treatment tank 1, and the pressure plate 6 is pushed down by controlling the hydraulic rod 5. The pressure plate 6 is inserted into the treatment tank 1, and the outer wall of the pressure plate 6 is fitted with the inner wall of the treatment tank 1 through the rubber frame 7. The rubber frame 7 can seal the connection between the pressure plate 6 and the treatment tank 1. The air in the treatment tank 1 can be extracted by matching the vacuum pump 9 and the telescopic connecting pipe 10, so that the inner cavity of the treatment tank 1 is in a low-oxygen environment, which is conducive to the rapid reproduction of anaerobic organisms. The magnesium agent and the hydrogen peroxide solution are injected into the dosing tank 11 in sequence, and the upper cover 12 is connected to the top of the dosing tank 11 with a thread. The top of the clamping tank 11 is sealed, and the connecting valve 14 is opened. Under the action of negative pressure, the liquid in the dosing tank 11 can be quickly sucked into the treatment tank 1, and the connecting valve 14 is closed, so that automatic dosing under negative pressure can be achieved, which is more convenient to use. The driving motor 2 drives the stirring paddle 3, and the stirring paddle 3 can quickly stir and mix the filtrate, magnesium agent and hydrogen peroxide solution, which can improve the extraction efficiency of phosphorus element. According to the amount of filtrate, the height of the pressure plate 6 can be adjusted by the hydraulic rod 5 to reduce the space in the treatment tank 1, which can reduce the time for the vacuum pump 9 to evacuate the treatment tank 1, and is more energy-efficient.

[0042] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims or their equivalents.

Claims

1. A device for recovering phosphorus from sludge, comprising a treatment tank (1), a drive motor (2) and a stirring paddle (3), wherein the drive motor (2) is mounted on the lower surface of the treatment tank (1), and the power output end of the drive motor (2) is connected to the stirring paddle (3) in a transmission manner, characterized in that: A mounting frame (4) is welded on the surface of the treatment tank (1), a hydraulic rod (5) is installed in the middle of the mounting frame (4), a pressure plate (6) is connected to the piston rod end of the hydraulic rod (5), a rubber frame (7) is sleeved on the outer wall surface of the pressure plate (6), and the rubber frame (7) abuts against the inner wall surface of the treatment tank (1); Guide frames (8) are welded at the corners of the upper surface of the treatment pool (1); A vacuum pump (9) is installed on the mounting frame (4).

2. The device for recovering phosphorus from sludge according to claim 1, characterized in that: The side wall surface of the treatment pool (1) is connected to a dosing tank (11), and a connecting valve (14) is installed at the bottom of the dosing tank (11).

3. The device for recovering phosphorus from sludge according to claim 2, characterized in that: The top surface of the dosing tank (11) is threadedly connected to an upper cover (12), and a force-adding rod (13) is integrally formed on the surface of the upper cover (12).

4. The device for recovering phosphorus from sludge according to claim 1, characterized in that: A slag discharge port (15) is provided at the bottom of the side wall of the treatment pool (1), and a cover plate (16) is fixed to the surface of the slag discharge port (15) by means of bolts.

5. The device for recovering phosphorus from sludge according to claim 1, characterized in that: A negative pressure gauge (17) is embedded on the surface of the treatment pool (1), and the negative pressure gauge (17) is located above the slag discharge port (15).

6. The device for recovering phosphorus from sludge according to claim 1, characterized in that: A limit frame (18) is welded to the inner wall of the treatment tank (1), and the limit frame (18) is located above the stirring paddle (3).

7. The device for recovering phosphorus from sludge according to claim 1, characterized in that: The suction end of the vacuum pump (9) is connected to a telescopic connecting pipe (10), and the bottom of the telescopic connecting pipe (10) is conductively connected to the pressing plate (6).

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