Chemical sludge drying treatment device

Abstract

The present invention relates to the technical field of chemical sludge drying, and particularly to a chemical sludge drying treatment device, which includes a flocculation tank body assembled on a stacked screw body; a cleaning frame vertically slidably connected to the inner wall of the flocculation tank. The cleaning frame includes a plurality of vertically arranged cleaning rods, the cleaning rods are in contact with the inner wall of the flocculation tank body, a moving rod is connected to the cleaning rods, a moving column with a hollow interior is provided at the bottom inside the flocculation tank body, the moving rod is vertically slidably connected to the inner wall of the moving column, a plurality of connected air pipes are provided at the bottom outside the flocculation tank body, the air pipes are communicated with the bottom of the moving column, and a plurality of air outlets are formed in the air pipes. The present invention can solve the problem of cleaning the sludge attached to the inner wall of the flocculation tank body, improve the situation of sludge deposition at the bottom of the inner cavity of the flocculation tank body, keep the sludge flow in the flocculation tank body unobstructed, improve the treatment efficiency, and promote the flocculation process.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical sludge drying, and particularly to a chemical sludge drying treatment device. Background Art

[0002] The chemical sludge drying treatment device includes multiple units, among which the spiral press is one of the key components. The spiral press removes the moisture in the sludge by mechanical pressing. When treating sludge, the spiral press first adds a flocculant to the muddy water. After the addition of the flocculant, the muddy water enters the flocculation reaction zone, where the flocculant reacts with the suspended solids in the sludge to form flocs, creating conditions for the subsequent dehydration step. The flocculated sludge is sent to the concentration and dehydration bin of the spiral press for dehydration and drying treatment.

[0003] Referring to the Chinese patent document with the publication number CN217265379U, the publication date of August 23, 2022, and the name of "A Small Integrated Spiral Press", it includes a flocculation conditioning bin and a chemical dosing bin. The sludge is put into the chemical dosing bin and the chemical agent is added, then the sludge enters the flocculation conditioning bin for stirring and flocculation, and then is transported to the sludge concentration and dehydration bin of the spiral press for dehydration treatment.

[0004] However, substances such as organic matter, clay minerals, or grease in the sludge are prone to form viscous flocs during the flocculation process. These flocs may adhere to the inner wall of the tank, affecting the flow of the sludge. Some flocs may deposit at the bottom of the tank, forming a sediment layer, which not only reduces the effective volume of the tank but also may cause poor sludge flow.

[0005] The above-mentioned adhesion and sedimentation problems will reduce the fluidity of the sludge in the tank and affect the treatment efficiency of the device for sludge drying. To maintain the normal operation of the equipment, it is necessary to clean the inner wall and bottom of the tank more frequently, increasing the maintenance cost and downtime. Summary of the Invention

[0006] In view of this, the present invention provides a chemical sludge drying treatment device, aiming to solve the technical problem of low drying treatment efficiency caused by sludge adhesion and sedimentation in the prior art.

[0007] To solve the above technical problems, the chemical sludge drying treatment device provided by the present invention adopts the following technical solutions: The chemical sludge drying treatment device includes a flocculation tank body assembled on a stacked screw body; a cleaning frame vertically slidably connected to the inner wall of the flocculation tank body. The cleaning frame includes a plurality of vertically arranged cleaning rods, the cleaning rods are in contact with the inner wall of the flocculation tank body, a moving rod is connected to the cleaning rod, a moving column with a hollow interior is provided at the bottom inside the flocculation tank body, the moving rod is vertically slidably connected to the inner wall of the moving column, a plurality of connected air pipes are provided at the bottom outside the flocculation tank body, the air pipes can be supplied with air through an external air supply structure, the air pipes are connected to the bottom of the moving column, and a plurality of air outlets communicating with the bottom of the inner cavity of the flocculation tank body are opened on the air pipes, and one-way valves are provided at the air outlets.

[0008] By adopting the above technical solutions, the vertical reciprocating movement of the cleaning frame can scrape the sludge adhered to the inner wall of the flocculation tank body, reduce the accumulation of sludge at the inner wall of the flocculation tank body. By cleaning the inner wall, the smooth flow of the sludge in the flocculation tank body can be maintained, the flow resistance can be reduced, the treatment efficiency can be improved, the cycle of shutdown cleaning and maintenance of the flocculation tank body can be extended, the shutdown time can be reduced, and the continuous operation ability of the equipment can be improved.

[0009] The air pipe blows air to the bottom inside the flocculation tank body through the air outlet. The blowing can disturb the sludge at the bottom of the flocculation tank body, improve the situation where the sludge forms a sediment layer at the bottom, and the blowing can also promote the flocculation process and improve the mixing effect of the sludge and the medicament in the flocculation tank body.

[0010] By controlling the vertical movement of the cleaning frame through the air supply of the air pipe, and at the same time the air pipe blows air through the air outlet, this structure is relatively simple, does not require complex electric and transmission mechanisms, reduces potential failure points, improves the reliability of the system. Due to the simple structure, it is also more convenient to maintain, has strong adaptability, and the moving speed of the cleaning frame can be flexibly adjusted by adjusting the air flow rate and pressure to adapt to different cleaning requirements.

[0011] Optionally, a tilted push plate is connected to the top of the cleaning frame, and a discharge port is opened on the left side of the flocculation tank body. The push plate is inclined downward from left to right.

[0012] By adopting the above technical solutions, the tilted push plate can help guide the sludge to flow to the discharge port, ensure that the sludge moves according to the predetermined process, reduce the disorderly flow of the sludge in the flocculation tank body, and can improve the discharge efficiency.

[0013] Optionally, a scraping plate is slidably connected to the bottom surface of the push plate in the left-right direction, and a connecting rod is hinged between the scraping plate and the left side of the inner wall of the flocculation tank body.

[0014] By adopting the above technical solution, during the vertical reciprocating movement of the pushing plate, under the action of the connecting rod, the scraping plate slides left and right along the bottom surface of the pushing plate, which can effectively scrape off the sludge adhering to the bottom surface of the pushing plate, keep the pushing plate clean, and link the pushing plate and the scraping plate through the connecting rod, which can improve the automation degree of the device.

[0015] Optionally, water pipes I are connected to the front side, rear side and right side of the cleaning frame. A one-way valve is arranged at the bottom inside the water pipe I. A water pipe II is arranged at the top of the pushing plate. The top of the water pipe I is communicated with the water pipe II. Water outlet holes are formed in the bottom surface of the pushing plate. The water pipe II is communicated with the water outlet holes.

[0016] By adopting the above technical solution, during the downward movement of the cleaning frame, the water flow at the bottom of the flocculation tank body enters the inside of the water pipe I. As the water flow in the water pipe I increases, the water flow moves upward to the water pipe II and sprays onto the sludge on the water surface inside the flocculation tank body through the water outlet holes, which can wet the sludge floating on the water surface, solve the problem that the sludge flow in the flocculation tank body is difficult due to sludge drying, and can improve the automation degree of the device.

[0017] Optionally, a spherical filter screen is arranged at the bottom of the water pipe I.

[0018] By adopting the above technical solution, the situation of sludge entering the water pipe I can be reduced as much as possible, and the normal operation of the structure can be guaranteed.

[0019] Optionally, the top surface of the cleaning rod inclines downward from top to bottom towards the direction close to the central axis of the flocculation tank body, and the bottom surface of the cleaning rod inclines upward from bottom to top towards the direction close to the central axis of the flocculation tank body.

[0020] By adopting the above technical solution, both the top surface and the bottom surface of the cleaning rod are inclined. When the cleaning rod moves vertically back and forth, the water flow has an impact on the top surface and the bottom surface of the cleaning rod, which can reduce the situation of sludge adhering to the top surface and the bottom surface of the cleaning rod. At the same time, the inclined top surface and bottom surface have a guiding effect on the water flow and the sludge, promoting the sludge to flow towards the middle of the flocculation tank body and facilitating the upward flow of the sludge.

[0021] Optionally, a compression spring is sleeved on the moving rod. The top end of the compression spring is connected to the top of the inner cavity of the moving column, and the bottom end of the compression spring is connected to the bottom of the moving rod.

[0022] By adopting the above technical solution, the normal operation of the device is further guaranteed, and the stability of the vertical reciprocating movement process of the cleaning rod is ensured.

[0023] Optionally, through holes are formed in a plurality of cleaning rods on the left side of the cleaning frame.

[0024] By adopting the above technical solution, the resistance suffered during the vertical movement of the cleaning rod can be reduced, and the situation of mutual conflict between structures can be reduced.

[0025] In summary, the present invention includes the following beneficial technical effects:

[0026] 1. It can clean the sludge attached to the inner wall of the flocculation tank, improve the situation of sludge deposition at the bottom of the inner cavity of the flocculation tank, keep the sludge flow in the flocculation tank unobstructed, reduce the flow resistance, improve the treatment efficiency, extend the cycle of shutdown cleaning and maintenance of the flocculation tank, promote the flocculation process, and improve the mixing effect.

[0027] 2. The inclined push plate can help guide the sludge to the discharge port, ensure that the sludge moves according to the predetermined process, reduce the disorderly flow of the sludge in the flocculation tank, and improve the discharge efficiency.

[0028] 3. The scraping plate slides left and right along the bottom surface of the push plate, can effectively scrape the sludge attached to the bottom surface of the push plate, keep the push plate clean, and through the connecting rod, the push plate and the scraping plate are linked, which can improve the automation degree of the device.

[0029] 4. The water flow sprays through the water outlet holes onto the sludge on the water surface inside the flocculation tank, can wet the sludge floating on the water surface, and solve the problem of difficult sludge flow in the flocculation tank caused by sludge drying.

[0030] 5. The inclined top surface and bottom surface can reduce the situation of sludge adhering to the top surface and bottom surface of the cleaning rod, and at the same time have a guiding effect on the water flow and sludge, promote the sludge to flow to the middle of the flocculation tank, and facilitate the upward flow of the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is the overall structural schematic diagram of the embodiment of the present invention;

[0032] Figure 2 is the cross-sectional schematic diagram of the flocculation tank in the embodiment of the present invention;

[0033] Figure 3 is Figure 2 the partial enlarged schematic diagram of part A in

[0034] Figure 4 is the structural schematic diagram of the cleaning frame and the push plate in the embodiment of the present invention;

[0035] Figure 5 is Figure 4 the partial enlarged schematic diagram of part B in

[0036] Figure 6 is the structural schematic diagram of the push plate and the scraping plate in the embodiment of the present invention.

[0037] Description of reference numerals: 1, spiral screw body; 11, feed box; 2, flocculation tank body; 21, discharge port; 22, stirring member; 3, cleaning frame; 31, cleaning rod; 311, through hole; 32, support rod; 33, support plate; 4, air blowing member; 41, moving rod; 42, moving column; 43, air pipe; 44, air outlet; 45, compression spring; 5, pushing plate; 6, scraping plate; 61, connecting rod; 7, water pipe I; 8, water pipe II; 9, water outlet hole. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention fall within the scope of protection of the present invention.

[0039] The following will be further described in detail with reference to the Figure 1 - attached Figure 6 drawings to further illustrate the present invention.

[0040] The embodiments of the present invention disclose a chemical sludge drying and treatment device. Referring to Figures 1 to 6 , the chemical sludge drying and treatment device includes a spiral screw body 1, a flocculation tank body 2, a cleaning frame 3, an air blowing member 4 and a pushing plate 5.

[0041] Referring to Figure 1 and Figure 2 , the flocculation tank body 2 is assembled on the spiral screw body 1. There is a feed box 11 on the right side of the flocculation tank body 2. Sludge and chemicals enter the flocculation tank body 2 through the feed box 11. A stirring member 22 is provided in the flocculation tank body 2. The stirring member 22 is used to mix the sludge and chemicals to accelerate the flocculation reaction process. The sludge and chemicals are flocculated in the flocculation tank body 2 to form flocs. The flocculated sludge enters the concentration and dehydration bin in the spiral screw body 1 through the discharge port 21 on the flocculation tank body 2 for dehydration and drying treatment.

[0042] Referring to Figure 2 and Figure 4, The cleaning rack 3 is slidably connected to the inner wall of the flocculation tank body 2, and the cleaning rack 3 moves vertically back and forth. The cleaning rack 3 includes a plurality of cleaning rods 31 and a plurality of support rods 32. The support rods 32 are vertically arranged, and the plurality of support rods 32 are arranged along the circumferential direction of the flocculation tank body 2. The support rods 32 are used to support the cleaning rods 31. The cleaning rods 31 are horizontally arranged. The plurality of cleaning rods 31 are divided into four groups. Each group of cleaning rods 31 is composed of a plurality of longitudinally arranged cleaning rods 31. Each group of cleaning rods 31 is arranged between two adjacent support rods 32. The cleaning rods 31 are in contact with the inner wall of the flocculation tank body 2. During the vertical reciprocating movement of the cleaning rack 3, the cleaning rods 31 can scrape off the sludge attached to the inner wall of the flocculation tank body 2. Reducing the accumulation of sludge at the inner wall of the flocculation tank body 2. By cleaning the inner wall, the smooth flow of sludge in the flocculation tank body 2 can be maintained, the flow resistance can be reduced, the treatment efficiency can be improved, the cycle of shutdown cleaning and maintenance of the flocculation tank body 2 can be extended, the shutdown time can be reduced, and the continuous operation ability of the equipment can be improved.

[0043] Refer to Figure 2 and Figure 3 , Further, the top surface of the cleaning rod 31 is inclined downward from top to bottom in the direction close to the central axis of the flocculation tank body 2, and the bottom surface of the cleaning rod 31 is inclined upward from bottom to top in the direction close to the central axis of the flocculation tank body 2. Both the top surface and the bottom surface of the cleaning rod 31 are inclined. When the cleaning rod 31 moves vertically back and forth, the water flow has an impact on the top surface and the bottom surface of the cleaning rod 31, which can reduce the situation of sludge adhering to the top surface and the bottom surface of the cleaning rod 31. At the same time, the inclined top surface and bottom surface have a guiding effect on the water flow and sludge, promoting the sludge to flow towards the middle of the flocculation tank body 2 and facilitating the upward flow of the sludge.

[0044] Refer to Figure 4 and Figure 5 , Further, through holes 311 are formed in the plurality of cleaning rods 31 on the left side of the cleaning rack 3. The resistance received during the vertical movement of the cleaning rods 31 can be reduced.

[0045] Refer to Figure 2 and Figure 3 , The air blowing member 4 includes a moving rod 41, a moving column 42, an air pipe 43, an air outlet 44 and a compression spring 45.

[0046] Refer to Figure 3 and Figure 4, there are multiple moving rods 41. The multiple moving rods 41 are arranged along the circumferential direction of the flocculation tank body 2. One of the cleaning rods 31 is fixedly connected to the moving rod 41. There are multiple moving columns 42. The multiple moving columns 42 are arranged along the circumferential direction of the flocculation tank body 2. The multiple moving rods 41 correspond to the multiple moving columns 42 one by one. The moving rod 41 is vertically slidably connected to the inner wall of the moving column 42. The multiple air pipes 43 are communicated with each other and are all arranged at the bottom outside the flocculation tank body 2. The air pipe 43 can be supplied with air through an external air supply structure. The air pipe 43 is communicated with the bottom of the moving column 42. By inflating the air pipe 43, the cleaning frame 3 can be moved upward.

[0047] Referring to Figure 3 , there are multiple air outlets 44. The air outlets 44 are opened on the air pipe 43. The air outlets 44 are communicated with the bottom of the inner cavity of the flocculation tank body 2. A check valve is provided at the air outlet 44. When the air pipe 43 is inflated, the gas is blown towards the bottom of the inner cavity of the flocculation tank body 2 through the air outlet 44. Blowing can disturb the sludge at the bottom of the flocculation tank body 2, improve the situation of sludge forming a sediment layer at the bottom, and blowing can also promote the flocculation process and improve the mixing effect of sludge and medicine in the flocculation tank body 2.

[0048] Referring to Figure 2 and Figure 3 , when the air pipe 43 blows air, it can not only move the cleaning frame 3 upward, but also blow air through the air outlet 44. When the air pipe 43 stops blowing air, the cleaning frame 3 moves downward under its own gravity, and the gas in the air pipe 43 is blown out through the air outlet 44. This structure is relatively simple, does not require complex electric and transmission mechanisms, reduces potential failure points, improves the reliability of the system, is more convenient to maintain due to its simple structure, has strong adaptability, and can flexibly adjust the moving speed of the cleaning frame 3 by adjusting the air flow rate and pressure to adapt to different cleaning requirements.

[0049] Referring to Figure 3 and Figure 5 , further, the air blowing member 4 further includes compression springs 45. There are multiple compression springs 45. The multiple compression springs 45 correspond to the multiple moving columns 42 one by one. The compression springs 45 are vertically arranged inside the moving columns 42. The compression springs 45 are sleeved on the moving rods 41. The top end of the compression spring 45 is connected to the top of the inner cavity of the moving column 42, and the bottom end of the compression spring 45 is connected to the bottom of the moving rod 41. The compression springs 45 exert a downward force on the cleaning frame 3 to ensure the normal operation of the device and ensure the stability of the vertical reciprocating movement process of the cleaning rod 31.

[0050] Referring to Figure 2 and Figure 4, the pushing plate 5 is arranged on the top of the cleaning frame 3. A vertically placed support plate 33 is provided on the top of the cleaning frame 3. The pushing plate 5 is fixedly connected to the top surface of the support plate 33, and the support plate 33 is used to support the pushing plate 5. The discharge port 21 of the flocculation tank body 2 is opened on the left side of the flocculation tank body 2, and the pushing plate 5 is arranged to slope downward from left to right. The inclined pushing plate 5 can help guide the sludge to the discharge port 21, ensure that the sludge moves according to the predetermined process, reduce the disorderly flow of the sludge in the flocculation tank body 2, and improve the discharge efficiency.

[0051] Refer to Figure 2 and Figure 6 , further, a scraping plate 6 is slidably connected to the bottom surface of the pushing plate 5 in the left-right direction. A connecting rod 61 is hinged between the scraping plate 6 and the left side inner wall of the flocculation tank body 2. During the vertical reciprocating movement of the pushing plate 5, under the action of the connecting rod 61, the scraping plate 6 slides left and right along the bottom surface of the pushing plate 5, which can effectively scrape the sludge attached to the bottom surface of the pushing plate 5, keep the pushing plate 5 clean, and through the connecting rod 61, the pushing plate 5 and the scraping plate 6 are linked, which can improve the automation degree of the device.

[0052] Refer to Figure 4 and Figure 6 , further, water pipes 7 are connected to the front side, rear side and right side of the cleaning frame 3. Specifically, if a water pipe 7 is arranged on the left side of the cleaning frame 3, the water pipe 7 will affect the flow of the sludge at the discharge port 21. A one-way valve is provided at the bottom inside the water pipe 7. A water pipe 8 is provided on the top of the pushing plate 5. The top of the water pipe 7 is communicated with the water pipe 8, and a water outlet hole 9 is opened on the bottom surface of the pushing plate 5. The water pipe 8 is communicated with the water outlet hole 9. During the downward movement of the cleaning frame 3, the water flow at the bottom of the flocculation tank body 2 enters the inside of the water pipe 7. As the water flow in the water pipe 7 increases, the water flow moves upward to the water pipe 8 and is sprayed onto the sludge on the water surface inside the flocculation tank body 2 through the water outlet hole 9, which can wet the sludge floating on the water surface and solve the problem that the sludge flow in the flocculation tank body 2 is difficult due to sludge drying.

[0053] Refer to Figure 5 , further, a spherical filter screen is provided at the bottom of the water pipe 7. It can minimize the situation of sludge entering the water pipe 7 and ensure the normal operation of the structure.

[0054] The implementation principle of the chemical sludge drying treatment device in the embodiment of the present invention is as follows:

[0055] The sludge and the medicament are added into the flocculation tank body 2 for flocculation. The stirring member 22 stirs the sludge and the medicament to accelerate the flocculation process. The flocculated sludge enters the concentration and dehydration bin inside the spiral press 1 through the discharge port 21 on the flocculation tank body 2 for dehydration and drying treatment.

[0056] During the sludge discharge process, the air pipe 43 is inflated by an external air supply mechanism. During the inflation of the air pipe 43, the cleaning frame 3 moves upward, and the air outlet 44 blows air towards the bottom of the inner cavity of the flocculation tank body 2 to scrape and clean the inner wall of the flocculation tank body 2, reducing the accumulation of sludge at the bottom of the flocculation tank body 2. When the air pipe 43 stops blowing air, the cleaning frame 3 moves downward under the action of its own gravity and the compression spring 45. During the downward movement of the cleaning frame 3, the gas in the air pipe 43 is blown out through the air outlet 44.

[0057] When the cleaning frame 3 moves vertically back and forth, the pushing plate 5 moves vertically back and forth to guide the sludge to flow towards the discharge port 21, improving the discharge efficiency and reducing the disorderly flow of the sludge.

[0058] During the vertical reciprocating movement of the pushing plate 5, under the action of the connecting rod 61, the scraping plate 6 slides to clean the bottom surface of the pushing plate 5.

[0059] During the downward movement of the cleaning frame 3, the water flow in the flocculation tank body 2 enters the first water pipe 7. As the water flow in the first water pipe 7 increases, the water flow flows upward into the second water pipe 8 and is discharged through the water outlet holes 9 to moisten the sludge floating on the water surface in the flocculation tank body 2, reducing the problem of difficult sludge flow caused by sludge drying.

[0060] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0061] The above is the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle described in the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. Chemical sludge drying treatment device, including a flocculation tank body assembled on a spiral stacking machine body, characterized in that, It further includes: A cleaning frame vertically slidably connected to the inner wall of the flocculation tank body. The cleaning frame includes a plurality of vertically arranged cleaning rods that are in contact with the inner wall of the flocculation tank body. A moving rod is connected to the cleaning rod. At the bottom inside the flocculation tank body, there is a moving column with a hollow interior. The moving rod is vertically slidably connected to the inner wall of the moving column. At the bottom outside the flocculation tank body, there are a plurality of interconnected air pipes, and the air pipes can be supplied with air through an external air supply structure. The air pipes are connected to the bottom of the moving column, and a plurality of air outlets communicating with the bottom of the inner cavity of the flocculation tank body are opened on the air pipes. A one-way valve is provided at the air outlet. The top of the cleaning frame is connected with an inclined push plate. An outlet is opened on the left side of the flocculation tank body, and the push plate is inclined downward from left to right. Water pipes I are connected to the front side, rear side, and right side of the cleaning frame. A one-way valve is provided at the bottom inside the water pipe I. A water pipe II is provided at the top of the push plate. The top of the water pipe I is connected to the water pipe II, and a water outlet hole is opened on the bottom surface of the push plate. The water pipe II is connected to the water outlet hole. A compression spring is sleeved on the moving rod. The top end of the compression spring is connected to the top of the inner cavity of the moving column, and the bottom end of the compression spring is connected to the bottom of the moving rod.

2. The chemical sludge drying treatment device according to claim 1, wherein: A scraping plate is slidably connected to the bottom surface of the push plate in the left-right direction. A connecting rod is hinged between the scraping plate and the left side of the inner wall of the flocculation tank body.

3. The chemical sludge drying treatment device according to claim 1, characterized in that: A spherical filter screen is provided at the bottom of the water pipe I.

4. The chemical sludge drying treatment device according to claim 1, characterized in that: The top surface of the cleaning rod is inclined downward towards the central axis of the flocculation tank body from top to bottom, and the bottom surface of the cleaning rod is inclined upward towards the central axis of the flocculation tank body from bottom to top.

5. The chemical sludge drying treatment device according to claim 1, wherein: Through holes are opened on a plurality of cleaning rods on the left side of the cleaning frame.

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