A sludge conditioning device and method based on two-stage conditioning

Abstract

The present application relates to sludge treatment technical field, disclose a kind of sludge conditioning device and method based on secondary conditioning, comprising: conditioning tank;Cover plate, detachably installed on the conditioning tank, and the lower surface of the cover plate has the cleaning assembly for cleaning the inside of conditioning tank;First rotating rod, rotatably installed in the inside of the conditioning tank, and the outside of the first rotating rod is provided with spiral plate, and the side wall of the spiral plate is provided with output hole;Second rotating rod, rotatably installed on first rotating rod, and the second rotating rod one end is connected with dosing pipe;The present application is provided with second rotating rod, first rotating rod, spiral plate and drive assembly, to facilitate with spiral shape to make secondary conditioning medicine dispersed into sludge, can drive conditioning medicine well dispersed in sludge, improve the mixing uniformity effect of conditioning medicine in sludge, by being provided with cleaning pipe, cleaning nozzle and connecting pipe, can be well cleaned by high-pressure water flow inside the conditioning tank.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment technology, and specifically to a sludge conditioning device and method based on two-stage conditioning. Background Technology

[0002] Sludge conditioning mainly refers to improving the thickening and dewatering performance of sludge by adding chemicals or using physical and biological methods. There are various methods of sludge conditioning. Compared with primary conditioning, two-stage conditioning achieves a significant improvement in dewatering performance through different stages of conditioning, making the water content in the sludge lower than 58%.

[0003] For example, Patent 1, Publication No. CN117342776B, entitled "A Method for Composite Conditioning and Deep Dewatering of Sludge," incorporates surface-treated pyrite powder into the sludge to construct flow channels, which helps persulfate to penetrate rapidly into the sludge flocs. It also activates the persulfate and promotes the rapid outflow of water released from the sludge flocs after conditioning. Patent 2, Publication No. CN221789069U, entitled "A Pipeline Mixer for Sewage Sludge Conditioning," continuously introduces chemicals into the sludge within the mixing pipeline, ensuring that different locations of the sludge main fluid are filled with chemicals, thus completing the initial mixing of the chemicals and sludge. Afterward, the sludge flows into the mixing pipeline, creating resistance to flow and allowing the chemicals to fully diffuse within the sludge.

[0004] In existing sludge conditioning processes, due to the low water content, high density, and poor fluidity of the sludge, direct stirring of the sludge as described in Patent 1 requires significant stirring force, and the conditioning powder or liquid cannot effectively dissolve and diffuse downwards into the accumulated sludge. While Patent 2, which involves inserting a dosing pipe into the sludge, allows the conditioning agent to enter the sludge, the fixed position of the dosing pipe results in a fixed dispersion position of the conditioning agent along the axial direction of the flowing sludge, failing to reach all parts of the sludge's interior effectively, leading to poor dispersion. Therefore, we propose a sludge conditioning device and method based on secondary conditioning. Summary of the Invention

[0005] The purpose of this invention is to provide a sludge conditioning device and method based on secondary conditioning to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sludge conditioning device based on secondary conditioning, comprising:

[0007] cooking pot;

[0008] A cover plate is detachably installed on the preparation container, and the lower surface of the cover plate has a cleaning component for cleaning the inside of the preparation container;

[0009] A first rotating rod is rotatably mounted inside the preparation tank, and a spiral plate is provided on the outer side of the first rotating rod, and an output hole is provided on one side wall of the spiral plate;

[0010] The second rotating rod is rotatably mounted on the first rotating rod, and one end of the second rotating rod is connected to a dosing tube;

[0011] A drive assembly is disposed on the lower surface of the preparation tank to drive the first rotating rod and the second rotating rod to rotate in opposite directions;

[0012] The second rotating rod has a cavity on its inner side that communicates with the inside of the spiral plate.

[0013] The drive assembly includes a first driven gear, a motor, a drive gear, and a drive box. The drive box is fixed to the lower surface of the preparation tank. The motor is fixed inside the drive box by a support plate. The drive gear is located at the output end of the motor. The first driven gear is fixed to the outer surface of the first rotating rod, and a first transmission chain that cooperates with the drive gear is provided on the outer side of the first driven gear.

[0014] The drive assembly further includes a second driven gear, a first transmission gear, a directional gear, and a second transmission gear. The directional gear and the second transmission gear are coaxially mounted on the inner side of the drive box, and the directional gear is meshed with the first transmission gear. The second driven gear is fixed to the lower end of the outer surface of the second rotating rod, and the second driven gear and the second transmission gear are engaged by a second transmission chain.

[0015] The inner wall of the cavity has a communicating hole corresponding to the first rotating rod. The outer surface of the second rotating rod is provided with a second sealing bearing and a first sealing bearing in sequence along the axial direction, and the communicating hole is located between the first sealing bearing and the second sealing bearing.

[0016] The cleaning assembly includes a cleaning pipe, a cleaning nozzle, and a connecting pipe. The cleaning pipe is fixed to the lower surface of the cover plate, and the lower surface of the cleaning pipe has a cleaning nozzle. The cleaning pipe is provided with a connecting pipe that penetrates the cover plate to connect with an external water pipe. The spiral plate is provided in three places, one of which is provided on the outer surface of the second rotating rod, and the spiral plate on the outer surface of the second rotating rod rotates in the opposite direction to the spiral plate on the outer surface of the first rotating rod.

[0017] Preferably, a baffle block is fixed inside the preparation tank, and the baffle block is provided in two places.

[0018] Preferably, multiple output holes are evenly distributed along one long side of the spiral plate.

[0019] Preferably, the cover plate has a feed inlet, the lower surface of the preparation tank has a discharge pipe, and the discharge pipe is offset from the cover plate.

[0020] A sludge conditioning method, using the aforementioned sludge conditioning device, includes the following steps:

[0021] Step A: The secondary conditioning medicine is delivered to the inside of the cavity through the dosing pipe using high-pressure gas. The conditioning medicine flows into the spiral plate outside the first rotating rod through the connecting hole. At the same time, the conditioning medicine continues to flow upward to fill the inner side of the spiral plate on the outer surface of the second rotating rod, and finally sprays out through the output hole.

[0022] Step B: The motor drives the first driven gear to rotate through the drive gear, thereby causing the first driven gear to drive the first rotating rod to rotate;

[0023] Step C: Simultaneously, the drive gear drives the first transmission gear to rotate, and the directional gear meshes with the first transmission gear to drive the second transmission gear to rotate in the opposite direction. The second transmission gear drives the second rotating rod to rotate through the second driven gear, so that the second rotating rod rotates in the opposite direction to the first rotating rod.

[0024] Step D: After the sludge enters the conditioning tank through the feed inlet, it is fed downwards by a spiral plate with a lower moisture content to reduce clogging. At the same time, conditioning agents are mixed into the sludge. The turbulence block further turbulents the downward-moving sludge to improve the mixing effect between the sludge and the conditioning agents.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] (1) The present invention is provided with a second rotating rod, a first rotating rod, a spiral plate and a driving component, which facilitates the dispersion of the secondary conditioning agent into the sludge in a spiral shape, improves the mixing uniformity of the conditioning agent in the sludge, avoids the conditioner floating on the sludge surface due to low sludge moisture content, or the inability to actively disperse the conditioning agent inside the sludge. This device can drive the conditioning agent to be actively dispersed in the sludge, distribute the conditioning agent in the sludge in a spiral shape, increase the dispersion area, and at the same time can turbulent the sludge to improve the mixing uniformity of the sludge and the conditioning agent, and improve the full diffusion and dissolution of the conditioning agent in the sludge during secondary conditioning.

[0027] (2) By providing a cleaning pipe, a cleaning nozzle and a connecting pipe, this invention avoids the inconvenience of quick cleaning of the device when changing different medicines or when not in use. The design of multiple cleaning nozzles in this invention can effectively clean the inside of the medicine tank quickly with high-pressure water flow, thus improving the convenience of subsequent cleaning. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the present invention;

[0029] Figure 2 This is a schematic cross-sectional view of the preparation container of the present invention;

[0030] Figure 3 This is a cross-sectional view of the drive box structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the drive component structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the second driven gear structure of the present invention;

[0033] Figure 6 This is a schematic cross-sectional view of the second rotating rod of the present invention;

[0034] Figure 7 This is a schematic diagram of the spiral plate structure of the present invention;

[0035] Figure 8 This is a schematic diagram of the cleaning component structure of the present invention.

[0036] Figure 9 This is a schematic diagram of the trajectory of a single spiral plate dispersing conditioning agents in sludge according to the present invention.

[0037] In the diagram: 1. Preparation tank; 201. First driven gear; 202. Second driven gear; 203. Motor; 204. First transmission gear; 205. Drive gear; 206. Reversing gear; 207. Second transmission gear; 208. Drive box; 3. Discharge pipe; 4. Cover plate; 401. Feed inlet; 5. Second rotating rod; 501. Cavity; 502. First sealed bearing; 503. Second sealed bearing; 504. Connecting hole; 6. First rotating rod; 7. Spiral plate; 701. Output hole; 9. Dosing pipe; 101. Cleaning pipe; 102. Cleaning nozzle; 103. Connecting pipe; 11. Turbulence block. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1-9 The present invention provides a technical solution: a sludge conditioning device based on secondary conditioning, comprising:

[0040] Container 1;

[0041] The cover plate 4 is detachably installed on the preparation container 1, and the lower surface of the cover plate 4 has a cleaning component for cleaning the inside of the preparation container 1.

[0042] This allows for quick and easy cleaning of the inside of the treatment container 1 using a high-pressure water jet when changing medications or when not in use.

[0043] The first rotating rod 6 is rotatably installed inside the preparation tank 1, and a spiral plate 7 is provided on the outer side of the first rotating rod 6, and an output hole 701 is opened on one side wall of the spiral plate 7;

[0044] It facilitates the spiral dispersion of conditioning agents in sludge, improving the uniformity of the dispersion of conditioning agents in sludge.

[0045] The second rotating rod 5 is rotatably mounted on the first rotating rod 6, and one end of the second rotating rod 5 is connected to the dosing tube 9;

[0046] A drive assembly is disposed on the lower surface of the preparation tank 1 to drive the first rotating rod 6 and the second rotating rod 5 to rotate in opposite directions.

[0047] This facilitates the dispersion of conditioning agents by making the trajectory of the dispersed conditioning agents a spiral with opposite directions of rotation during active dispersion, further improving the uniform dispersion effect of the conditioning agents in the sludge.

[0048] The second rotating rod 5 has a cavity 501 on its inner side that communicates with the inside of the spiral plate 7.

[0049] To facilitate better delivery of the medication;

[0050] The drive assembly includes a first driven gear 201, a motor 203, a drive gear 205, and a drive box 208. The drive box 208 is fixed to the lower surface of the preparation tank 1. The motor 203 is fixed inside the drive box 208 by a support plate. The drive gear 205 is located at the output end of the motor 203. The first driven gear 201 is fixed to the outer surface of the first rotating rod 6, and a first transmission chain that cooperates with the drive gear 205 is provided on the outer side of the first driven gear 201.

[0051] The motor 203 drives the first rotating rod 6 to rotate, so that when the sludge moves along the axial direction of the conditioning tank 1, the conditioning medicine is spirally dispersed into the sludge under the rotation of the first rotating rod 6.

[0052] The drive assembly also includes a second driven gear 202, a first transmission gear 204, a directional gear 206, and a second transmission gear 207. The directional gear 206 and the second transmission gear 207 are coaxially mounted on the inner side of the drive housing 208, and the directional gear 206 is meshed with the first transmission gear 204. The second driven gear 202 is fixed to the lower end of the outer surface of the second rotating rod 5, and the second driven gear 202 and the second transmission gear 207 are engaged by a second transmission chain.

[0053] This facilitates the rotation of the second rotating rod 5, and the spiral direction of the second rotating rod 5 is opposite to that of the first rotating rod 6, thereby improving the uniform dispersion of the conditioning agent inside the sludge.

[0054] The inner wall of the cavity 501 has a connecting hole 504 corresponding to the first rotating rod 6. The outer surface of the second rotating rod 5 is provided with a second sealing bearing 503 and a first sealing bearing 502 in sequence along the axial direction, and the connecting hole 504 is located between the first sealing bearing 502 and the second sealing bearing 503.

[0055] This facilitates better movement of the conditioning medicine towards the spiral plate 7 outside the first rotating rod 6, thereby allowing the conditioning medicine to be evenly dispersed through the spiral plate 7.

[0056] The cleaning assembly includes a cleaning pipe 101, a cleaning nozzle 102 and a connecting pipe 103. The cleaning pipe 101 is fixed to the lower surface of the cover plate 4, and the lower surface of the cleaning pipe 101 has a cleaning nozzle 102. The cleaning pipe 101 is provided with a connecting pipe 103 that penetrates the cover plate 4 to connect with an external water pipe.

[0057] It facilitates the addition of high-pressure water flow to flush the inside of the preparation tank 1, improving the ease of cleaning;

[0058] There are three spiral plates 7, one of which is located on the outer surface of the second rotating rod 5, and the spiral plates 7 on the outer surface of the second rotating rod 5 rotate in the opposite direction to the spiral plates 7 on the outer surface of the first rotating rod 6.

[0059] This facilitates better dispersion of the conditioning medicine into the sludge.

[0060] Preferably, a baffle block 11 is fixed inside the preparation tank 1, and two baffle blocks 11 are provided.

[0061] It facilitates the turbulence of flowing sludge, thereby improving the uniform dispersion of conditioning agents in the sludge.

[0062] Preferably, multiple output holes 701 are evenly distributed along one long side of the spiral plate 7.

[0063] This facilitates better dispersion of the conditioning agent in the sludge during secondary conditioning.

[0064] Preferably, the cover plate 4 has a feed inlet 401, and the lower surface of the preparation tank 1 has a discharge pipe 3, which is offset from the feed inlet 401.

[0065] This helps prevent sludge from flowing directly from the inlet 401 into the inside of the outlet pipe 3, and increases the residence time of sludge inside the conditioning tank 1, thereby increasing the contact and dissolution effect between the conditioning agent and the sludge.

[0066] A sludge conditioning method, employing a sludge conditioning device, includes the following steps:

[0067] Step A: The secondary conditioning medicine is delivered to the inside of the cavity 501 through the dosing pipe 9 by high pressure gas. The conditioning medicine flows into the spiral plate 7 outside the first rotating rod 6 through the connecting hole 504. At the same time, the conditioning medicine continues to flow upward to fill the inside of the spiral plate 7 on the outer surface of the second rotating rod 5. Finally, it is sprayed outward through the output hole 701.

[0068] Step B: The motor 203 drives the first driven gear 201 to rotate through the drive gear 205, thereby causing the first driven gear 201 to drive the first rotating rod 6 to rotate;

[0069] Step C: Simultaneously, drive gear 205 drives the first transmission gear 204 to rotate, and reversing gear 206 meshes with the first transmission gear 204 to drive the second transmission gear 207 to rotate in the opposite direction. The second transmission gear 207 drives the second rotating rod 5 to rotate through the second driven gear 202, so that the second rotating rod 5 rotates in the opposite direction to the first rotating rod 6.

[0070] Step D: After the sludge enters the inner side of the conditioning tank 1 through the feed inlet 401, it is fed downward through the spiral plate 7 with a lower moisture content to reduce clogging. At the same time, conditioning agents are mixed into the sludge. The turbulence block 11 turbulently moves the sludge downward to improve the mixing effect of the sludge and conditioning agents.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sludge conditioning device based on secondary conditioning, characterized in that, include: Container (1); The cover (4) is detachably installed on the cooking pot (1), and the lower surface of the cover (4) has a cleaning component for cleaning the inside of the cooking pot (1); The first rotating rod (6) is rotatably installed inside the preparation tank (1), and a spiral plate (7) is provided on the outer side of the first rotating rod (6), and an output hole (701) is opened on one side wall of the spiral plate (7). The second rotating rod (5) is rotatably mounted on the first rotating rod (6), and one end of the second rotating rod (5) is connected to the dosing tube (9). A drive assembly is disposed on the lower surface of the preparation tank (1) to drive the first rotating rod (6) and the second rotating rod (5) to rotate in opposite directions; Among them, the inner side of the second rotating rod (5) is provided with a cavity (501) that communicates with the inside of the spiral plate (7); The drive assembly includes a first driven gear (201), a motor (203), a drive gear (205), and a drive box (208). The drive box (208) is fixed to the lower surface of the mixing tank (1). The motor (203) is fixed inside the drive box (208) by a support plate. The drive gear (205) is located at the output end of the motor (203). The first driven gear (201) is fixed to the outer surface of the first rotating rod (6), and a first transmission chain that cooperates with the drive gear (205) is provided on the outer side of the first driven gear (201). The drive assembly also includes a second driven gear (202), a first transmission gear (204), a reversing gear (206), and a second transmission gear (207). The reversing gear (206) and the second transmission gear (207) are coaxially mounted on the inner side of the drive box (208), and the reversing gear (206) is meshed with the first transmission gear (204). The second driven gear (202) is fixed to the lower end of the outer surface of the second rotating rod (5), and the second driven gear (202) and the second transmission gear (207) are engaged by a second transmission chain. The inner wall of the cavity (501) has a connecting hole (504) corresponding to the first rotating rod (6). The outer surface of the second rotating rod (5) is provided with a second sealing bearing (503) and a first sealing bearing (502) in sequence along the axial direction, and the connecting hole (504) is located between the first sealing bearing (502) and the second sealing bearing (503). The cleaning assembly includes a cleaning pipe (101), a cleaning nozzle (102), and a connecting pipe (103). The cleaning pipe (101) is fixed to the lower surface of the cover plate (4), and the cleaning nozzle (102) is located on the lower surface of the cleaning pipe (101). A connecting pipe (103) is provided on the cleaning pipe (101) to pass through the cover plate (4) and connect to an external water pipe. There are three spiral plates (7), one of which is located on the outer surface of the second rotating rod (5), and the spiral plates (7) on the outer surface of the second rotating rod (5) rotate in the opposite direction to the spiral plates (7) on the outer surface of the first rotating rod (6).

2. The sludge conditioning device based on secondary conditioning according to claim 1, characterized in that: A baffle block (11) is fixed inside the preparation tank (1), and there are two baffle blocks (11).

3. The sludge conditioning device based on secondary conditioning according to claim 1, characterized in that: Multiple output holes (701) are evenly distributed along one long side of the spiral plate (7).

4. The sludge conditioning device based on secondary conditioning according to claim 1, characterized in that: The cover plate (4) has a feed inlet (401), and the lower surface of the conditioning tank (1) has a discharge pipe (3), which is offset from the cover plate (4).

5. A sludge conditioning method, employing the sludge conditioning apparatus as described in any one of claims 1-4, characterized in that, Includes the following steps: Step A: The secondary conditioning medicine is delivered to the inside of the cavity (501) through the dosing pipe (9) by high pressure gas. The conditioning medicine flows into the spiral plate (7) outside the first rotating rod (6) through the connecting hole (504). At the same time, the conditioning medicine continues to flow upward to fill the inside of the spiral plate (7) on the outer surface of the second rotating rod (5). Finally, it is sprayed out through the output hole (701). Step B: The motor (203) drives the first driven gear (201) to rotate through the drive gear (205), thereby causing the first driven gear (201) to drive the first rotating rod (6) to rotate; Step C: Simultaneously, the drive gear (205) drives the first transmission gear (204) to rotate, and the reversing gear (206) meshes with the first transmission gear (204) to drive the second transmission gear (207) to rotate in the opposite direction. The second transmission gear (207) drives the second rotating rod (5) to rotate through the second driven gear (202) so that the second rotating rod (5) rotates in the opposite direction to the first rotating rod (6). Step D: After the sludge enters the conditioning tank (1) through the feed inlet (401), it is fed downward through the spiral plate (7) with a lower water content to reduce clogging. At the same time, conditioning agents are mixed into the sludge. The downward sludge is turbulent by the turbulence block (11) to improve the mixing effect of the sludge and conditioning agents.

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