Dehydration device for sludge treatment
Through the design of the mixing drum and dewatering drum, alum is used to form flocs and squeeze out water in the dewatering drum, which solves the problems of low sludge dewatering efficiency and blockage and achieves efficient sludge dewatering effect.
Patent Information
- Application Number
- CN202422351142.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-09-26
AI Technical Summary
In traditional sludge dewatering methods, the complex composition of the sludge easily clogs the through-holes of the centrifuge cylinder, resulting in low dewatering efficiency and affecting subsequent treatment processes.
It adopts a mixing drum and dewatering drum structure, and uses a stirring mechanism and a heating drum to promote the dissolution of alum to form aluminum hydroxide colloidal flocs. The movable plate pushes the sludge flocs in the dewatering drum to squeeze and release water, and the transmission mechanism is combined to achieve the separation of sludge and water.
It effectively reduces the risk of through-hole blockage, improves dehydration efficiency, ensures the thoroughness of sludge treatment, and reduces the sludge moisture content.
Smart Images
Figure CN223357523U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sludge dehydration, in particular to a dehydration device for sludge treatment. Background Art
[0002] Sludge is a solid sediment produced during water and sewage treatment. It refers to the sediment, particulate matter, and floating matter produced when wastewater is treated using physical, chemical, physicochemical, and biological methods. It is an extremely complex, heterogeneous substance composed of organic debris, bacterial cells, inorganic particles, and colloids.
[0003] Traditional sludge dewatering methods often use centrifugal dewatering devices. In practical applications, the complex composition of sludge often contains a large amount of impurities such as fibers and particulate matter. These impurities easily accumulate during the centrifugal process and clog the through-holes of the centrifuge cylinder. Once the through-holes are blocked, the water cannot be discharged normally, which not only greatly reduces the dewatering efficiency but also may lead to incomplete sludge treatment and affect subsequent processing procedures. Therefore, the utility model proposes a dewatering device for sludge treatment. Utility Model Content
[0004] The purpose of the utility model is to provide a dewatering device for sludge treatment, so as to solve the problem that the traditional sludge dewatering method proposed in the above background technology mostly adopts a centrifugal dewatering device. In actual application, the complex composition of the sludge often contains a large amount of impurities such as fibers and particulate matter. These impurities are easy to accumulate and block the through holes of the centrifugal cylinder during the centrifugal process. Once the through holes are blocked, the water flow cannot be discharged normally, which not only greatly reduces the dewatering efficiency, but also may lead to incomplete sludge treatment and affect the subsequent treatment process.
[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:
[0006] A dewatering device for sludge treatment comprises a mixing drum and a dewatering drum, wherein the dewatering drum is provided beside the mixing drum, a stirring mechanism is provided inside the mixing drum, and the mixing drum is sleeved inside the heating drum, a transmission mechanism is provided below the heating drum, and a dewatering drum is provided beside the transmission mechanism;
[0007] In which, a storage chamber is provided inside the dehydration cylinder, and a number of through holes are evenly opened on the annular wall of the storage chamber. A fixed rod is provided at the inner center of the storage chamber, and a fixed baffle is fixedly connected to the outside of the fixed rod, and the other end of the fixed baffle is attached to the inner wall of the storage chamber. Slide grooves are correspondingly provided on the upper and lower parts of the rod body of the fixed rod, and a slider is movably provided in the slide groove. A movable plate is fixedly connected to the outer side of the slider, and a rocker is provided on the top of the movable plate close to the storage chamber, and the top of the rocker extends to the outside of the dehydration cylinder.
[0008] Optionally, the top cover of the dehydration cylinder is provided with a ring hole that matches the rocker.
[0009] Optionally, an annular cavity is formed between the storage chamber and the dehydration cylinder, and a water tank for storing sewage is provided at the bottom of the annular cavity.
[0010] Optionally, a feed port is provided on the top of the mixing drum, and a heating tube is provided in the inner ring of the heating drum.
[0011] Optionally, the stirring mechanism includes a first motor, which is fixedly mounted on the top of the stirring drum, and the output end of the first motor is fixedly connected to a stirring shaft provided inside the stirring drum, a first stirring rod is provided on the outside of the stirring shaft, and a second stirring rod is provided below the first stirring rod and at the bottom of the stirring shaft.
[0012] Optionally, a support frame is provided at the bottom of the heating cylinder, and a bearing seat for fixing the transmission mechanism is provided in the middle of the support frame.
[0013] Optionally, the transmission mechanism includes a transmission cylinder fixedly mounted on a supporting seat, a screw being provided inside the transmission cylinder, and a feed hopper connected to the interior of the mixing cylinder being provided on the external top side of the transmission cylinder, a second motor being fixedly mounted on one side of the transmission cylinder, and an output end of the second motor being fixedly connected to one end of the screw, and a discharge pipe extending from one end of the transmission cylinder close to the dehydration cylinder.
[0014] The beneficial effects of the utility model are:
[0015] In the utility model, when alum is added to the sludge in the mixing drum, the alum is rapidly dissolved and hydrolyzed under the action of the stirring mechanism, and the generated aluminum hydroxide colloid fully contacts and adsorbs the sludge particles to form larger flocs. When the movable plate moves toward the fixed baffle under the action of the rocker, the sludge is pushed and a certain pressure is applied. Due to the pretreatment of the alum, the particles in the sludge have formed larger flocs. These flocs are more likely to release water therein when squeezed, thereby reducing direct contact and adhesion between the sludge particles and reducing the possibility of clogging the through-holes. At the same time, the sewage in the sludge flows into the water tank in the annular cavity through the through-holes, thereby realizing the separation of sludge and sewage. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic structural diagram of a dewatering device for sludge treatment according to the present invention;
[0017] Figure 2 It is a front cross-sectional view of the present utility model;
[0018] Figure 3 This is a schematic diagram of the internal structure of the dehydration cylinder in the present utility model;
[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0020] The numbers in the figure are:
[0021] 1. Mixing drum; 101. Feeding port; 2. Heating drum; 201. Heating tube;
[0022] 3. Stirring mechanism; 301. First motor; 302. Stirring shaft; 303. First stirring rod; 304. Second stirring rod;
[0023] 4. Bearing seat;
[0024] 5. Transmission mechanism; 501. Second motor; 502. Transmission cylinder; 503. Screw; 504. Feed hopper; 505. Discharge pipe;
[0025] 6. Dehydration cylinder; 601. Ring hole; 7. Storage chamber; 701. Through hole; 8. Ring cavity; 801. Water tank;
[0026] 9. Fixed rod; 901. Slide; 902. Slider; 903. Movable plate; 904. Fixed baffle; 905. Rocker;
[0027] 10. Support frame. DETAILED DESCRIPTION
[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.
[0029] The following describes the preferred embodiments of the device of the present invention.
[0030] See also Figure 1-4 As shown, the sludge treatment dewatering device includes a mixing drum 1 and a dewatering drum 6. The dewatering drum 6 is provided beside the mixing drum 1. A stirring mechanism 3 is provided inside the mixing drum 1. The mixing drum 1 is sleeved inside the heating drum 2. A transmission mechanism 5 is provided below the heating drum 2. The dewatering drum 6 is provided beside the transmission mechanism 5.
[0031] Among them, a storage chamber 7 is provided inside the dehydration cylinder 6, and a number of through holes 701 are evenly opened on the annular wall of the storage chamber 7. A fixed rod 9 is provided at the inner center of the storage chamber 7, and a fixed baffle 904 is fixedly connected to the outside of the fixed rod 9, and the other end of the fixed baffle 904 is attached to the inner wall of the storage chamber 7. A slide groove 901 is provided at the upper and lower parts of the rod body of the fixed rod 9, and a slider 902 is movably provided in the slide groove 901. A movable plate 903 is fixedly connected to the outer side of the slider 902. A rocker 905 is provided at the top of the movable plate 903 close to the storage chamber 7, and the top of the rocker 905 extends to the outside of the dehydration cylinder 6.
[0032] Furthermore, the top cover of the dehydration cylinder 6 is provided with a ring hole 601 that matches the rocker 905 .
[0033] Furthermore, an annular cavity 8 is formed between the storage chamber 7 and the dehydration cylinder 6 , and a water tank 801 for storing sewage is provided at the bottom of the annular cavity 8 .
[0034] Specifically, after the sludge mixture is transported to the storage chamber 7, the operator rotates the rocker 905 to move the movable plate 903 toward one side of the fixed baffle 904. As the movable plate 903 is pushed forward, the sludge mixture is squeezed, and the water therein is squeezed out under the action of pressure and flows into the water tank 801 in the annular cavity 8 through the through hole 701 provided on the annular wall of the storage chamber 7. Since the sludge has been pre-treated with alum in the mixing drum 1, larger flocs are formed. These flocs are more likely to release water during the extrusion process, and the risk of clogging the through hole 701 is also reduced. After a period of repeated extrusion and dehydration, the moisture content of the sludge in the storage chamber 7 is greatly reduced, thereby achieving the purpose of dehydration.
[0035] In another embodiment provided by the present invention, Figure 2 As shown, a feed port 101 is provided at the top of the mixing drum 1, through which the operator can add the sludge to be treated and an appropriate amount of alum into the mixing drum 1. The heating drum 2 is fitted with a heating tube 201 in the inner ring of the mixing drum 1. The mixture in the mixing drum 1 is heated by the heat source in the heating tube 201. The purpose of heating is to accelerate the dissolution and hydrolysis process of alum, promote the formation of aluminum hydroxide colloid, and thus improve the adsorption effect of sludge particles.
[0036] Furthermore, the stirring mechanism 3 includes a first motor 301, which is fixedly installed on the top of the mixing drum 1, and the output end of the first motor 301 is fixedly connected to the stirring shaft 302 provided inside the mixing drum 1. A first stirring rod 303 is provided on the outside of the stirring shaft 302, and a second stirring rod 304 is provided below the first stirring rod 303 and at the bottom of the stirring shaft 302. The first motor 301 drives the stirring shaft 302 to rotate, and the rotation of the stirring shaft 302 drives the first stirring rod 303 thereon to stir the sludge and alum, and the second stirring rod 304 can continuously stir the sludge to prevent it from depositing at the bottom of the mixing drum 1.
[0037] Furthermore, a support frame 10 is provided at the bottom of the heating tube 2 , and a bearing seat 4 for fixing the transmission mechanism 5 is provided in the middle of the support frame 10 .
[0038] Furthermore, the transmission mechanism 5 includes a transmission cylinder 502 fixedly mounted on the supporting seat 4, a screw 503 is provided inside the transmission cylinder 502, and a feed hopper 504 connected to the inside of the mixing cylinder 1 is provided on the external top side of the transmission cylinder 502, a second motor 501 is fixedly mounted on one side of the transmission cylinder 502, and the output end of the second motor 501 is fixedly connected to one end of the screw 503, and a discharge pipe 505 is extended from the end of the transmission cylinder 502 close to the dewatering cylinder 6, and the sludge mixture enters the transmission cylinder 502 through the feed hopper 504, and the second motor 501 drives the screw 503 to rotate in the transmission cylinder 502, and applies thrust to the sludge mixture through its spiral structure, causing it to move along the axial direction of the transmission cylinder 502, and when the sludge mixture is pushed to the end of the transmission cylinder 502 by the screw 503, it will enter the dewatering cylinder 6 through the discharge pipe 505 for further dehydration treatment.
[0039] During use, the operator adds the sludge to be treated and an appropriate amount of additives such as alum into the mixing drum 1 through the feed port 101 at the top of the mixing drum 1, starts the first motor 301 in the stirring mechanism 3, drives the stirring shaft 302 to rotate, and the rotation of the stirring shaft 302 drives the first stirring rod 303 and the second stirring rod 304 to stir the sludge and alum to ensure that the two are fully mixed. At the same time, the heating tube 201 in the heating drum 2 starts to work to heat the mixture in the mixing drum 1, accelerate the dissolution and hydrolysis process of alum, promote the formation of aluminum hydroxide colloid, and improve the adsorption effect of sludge particles. The sludge mixture that has been stirred and heated enters the degassing unit through the transmission mechanism 5. In the storage chamber 7 of the water drum 6, the operator then rotates the rocker 905 to move the movable plate 903 toward one side of the fixed baffle 904. As the movable plate 903 is pushed forward, the sludge mixture is squeezed, and the water therein is squeezed out under the action of pressure and flows into the water tank 801 in the annular cavity 8 through the through hole 701 provided on the annular wall of the storage chamber 7. Since the sludge has been pre-treated with alum in the mixing drum 1, larger flocs are formed. These flocs are more likely to release water during the squeezing process, and the risk of clogging the through hole 701 is also reduced. After a period of repeated squeezing and dehydration, the moisture content of the sludge in the storage chamber 7 is greatly reduced, achieving the purpose of dehydration.
[0040] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.
Claims
1. A dewatering device for sludge treatment, characterized in that: The invention comprises a mixing drum (1) and a dehydration drum (6), wherein the dehydration drum (6) is provided on the side of the mixing drum (1), a stirring mechanism (3) is provided inside the mixing drum (1), and the mixing drum (1) is sleeved inside the heating drum (2), a transmission mechanism (5) is provided below the heating drum (2), and a dehydration drum (6) is provided on the side of the transmission mechanism (5); The dehydration cylinder (6) is provided with a storage chamber (7) inside, and a plurality of through holes (701) are evenly opened on the annular wall of the storage chamber (7). A fixed rod (9) is provided at the inner center of the storage chamber (7), and a fixed baffle (904) is fixedly connected to the outside of the fixed rod (9), and the other end of the fixed baffle (904) is attached to the inner wall of the storage chamber (7). A sliding groove (901) is correspondingly opened on the upper and lower parts of the rod body of the fixed rod (9), and a slider (902) is movably provided in the sliding groove (901). A movable plate (903) is fixedly connected to the outer side of the slider (902), and a rocker (905) is provided on the top of the movable plate (903) close to the storage chamber (7), and the top of the rocker (905) extends to the outside of the dehydration cylinder (6).
2. A dewatering device for sludge treatment according to claim 1, characterized in that: The top cover of the dehydration cylinder (6) is provided with a ring hole (601) that matches the rocker (905).
3. A dewatering device for sludge treatment according to claim 1, characterized in that: An annular cavity (8) is formed between the storage chamber (7) and the dehydration cylinder (6), and a water tank (801) for storing sewage is provided at the bottom of the annular cavity (8).
4. A dewatering device for sludge treatment according to claim 1, characterized in that: The top of the mixing drum (1) is provided with a feed port (101), and the heating drum (2) is provided with a heating tube (201) in a ring close to the inner cavity of the mixing drum (1).
5. The dewatering device for sludge treatment according to claim 1, characterized in that: The stirring mechanism (3) comprises a first motor (301), the first motor (301) being fixedly mounted on the top of the stirring drum (1), and the output end of the first motor (301) being fixedly connected to a stirring shaft (302) provided inside the stirring drum (1), a first stirring rod (303) being provided outside the stirring shaft (302), and a second stirring rod (304) being provided below the first stirring rod (303) and at the bottom of the stirring shaft (302).
6. A dewatering device for sludge treatment according to claim 1, characterized in that: A support frame (10) is provided at the bottom of the heating cylinder (2), and a bearing seat (4) for fixing the transmission mechanism (5) is provided in the middle of the support frame (10).
7. The dewatering device for sludge treatment according to claim 1, characterized in that: The transmission mechanism (5) includes a transmission cylinder (502) fixedly mounted on a supporting seat (4), a screw (503) being provided inside the transmission cylinder (502), and a feed hopper (504) connected to the inside of the mixing cylinder (1) being provided on the external top side of the transmission cylinder (502), a second motor (501) being fixedly mounted on one side of the transmission cylinder (502), and an output end of the second motor (501) being fixedly connected to one end of the screw (503), and a discharge pipe (505) extending from one end of the transmission cylinder (502) close to the dehydration cylinder (6).