Solid-liquid separation device for sewage sludge treatment

Abstract

The invention relates to the technical field of sewage and sludge treatment devices, and discloses a solid-liquid separation device for sewage and sludge treatment, which comprises a lower bracket, at least one separation assembly is mounted on the lower bracket, an upper bracket is mounted on the lower bracket, the upper bracket is provided with a feed chute communicated with the separation assembly, and a drain pipe is arranged above the feed chute. The drainage pipe is communicated with the top end of the separation assembly, a driving assembly connected with the separation assembly is installed in the lower support, the separation assembly comprises a shell part with openings in the upper end and the lower end, a shaft body with a deep groove in the top end and separation blades, the separation blades are arranged in the shell part, the shaft body penetrates through the separation blades, and meanwhile the two ends of the shaft body extend out of the shell part. The upper shell is of the conical shell structure, the cross section of the upper shell is gradually increased downwards, and along with gradual increase of the bottoms of the separation blades, the linear speed of the bottoms of the separation blades is larger than that of the tops of the separation blades in the rotating process, so that the mud-water separation effect of the bottoms is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage sludge treatment devices, and particularly to a solid-liquid separation device for sewage sludge treatment. Background Art

[0002] River dredging uses mechanical equipment to stir the sludge deposited at the bottom of the river into a mixed water-like state and let it flow away with the river water, thereby playing a role in dredging. River siltation has increasingly affected the normal functioning of various functions such as flood control, drainage, irrigation, water supply, and navigation. To restore the normal functions of the river and promote the rapid and sustainable development of the economic society, a river dredging and dredging project is carried out. The main purpose of solid-liquid separation of sewage sludge is to separate the solid particles and liquid in the sewage for subsequent treatment and disposal.

[0003] For the solid-liquid centrifugal separation device for sludge treatment, based on the fact that substances of different sizes and densities in a container will settle at different rates at the same rotational speed. If the particle density is greater than the liquid density, the particles will gradually move away from the central axis along the direction of the centrifugal force. After a period of centrifugal operation, effective separation of substances with different densities can be achieved. The rotating structure in the middle of the existing centrifugal separation device is a cylindrical structure, and the rotational speeds of the outer sides of the feed end and the discharge end are the same. Only by changing the rotational speed of the rotating structure can the separation effect be improved. Due to the different solid contents at the feed end and the discharge end, and the same rotational speeds of the outer sides of the feed end and the discharge end, the solid-liquid separation effect at the discharge end cannot be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a solid-liquid separation device for sewage sludge treatment to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions: The present invention is a solid-liquid separation device for sewage sludge treatment, including a lower support. At least one separation component is installed on the lower support. An upper support is installed on the lower support. The upper support has a feed trough communicating with the separation component. A drain pipe is provided above the feed trough, and the drain pipe communicates with the top end of the separation component. A drive component connected to the separation component is installed inside the lower support. The separation component includes a housing member with openings at both upper and lower ends, a shaft body with a deep groove at the top end, and separation blades. The separation blades are arranged inside the housing member, the shaft body passes through the separation blades, and both ends of the shaft body extend out of the housing member. Wherein, both the housing member and the separation blades are conical structures, and the gap between the outer side surface of the separation blades and the inner wall of the housing member gradually increases downward.

[0006] Furthermore, the lower bracket includes two vertically distributed first side plates, a top plate and a cross plate are installed between the two first side plates, the first side plates, the top plate and the cross plate are welded and connected, and the first side plates are perpendicular to the top plate and the cross plate. At least one circular hole is opened on the top plate, and the bottom end of the separation component is fitted and installed in the circular hole. The number of circular holes is the same as the number of separation components. The driving component is installed on the cross plate, and the driving component is connected to the shaft body. The driving component has a protective shell, and a gear assembly is installed in the protective shell. A driving motor is installed on the outside of the protective shell, and the driving motor is connected to the gear assembly in a transmission manner. A driven wheel is installed on the shaft body, and the driven wheel is located in the protective shell and cooperates with the gear assembly.

[0007] Furthermore, the upper bracket includes a second side plate, and the second side plates are connected to the opposite sides of the feed trough, and the second side plates are installed on the top plate, and the sludge raw material is added to the inside of the feed trough.

[0008] Furthermore, vertical plates are installed on the opposite sides of the feed trough, and drain pipes are placed on the two vertical plates. A first water outlet pipe and a second water outlet pipe are provided at both ends of the drain pipe. The position of the first water outlet pipe is lower than that of the second water outlet pipe. At least one interface is provided on the outer surface of the drain pipe, and the top end of the shaft body passes through the corresponding interface and extends into the interior of the drain pipe.

[0009] Furthermore, the shell member includes an upper shell and a lower shell, the top of the upper shell is connected to a connecting flange provided at the bottom of the feed trough, a sealing gasket is installed between the upper shell and the lower shell, a discharge port is provided on the outer side of the lower shell, the discharge port faces the discharge trough, and the discharge trough is installed between the two first side plates.

[0010] Furthermore, a spiral blade, a separation blade and a scraper are sequentially sleeved on the shaft body, the spiral blade is located in the feed trough, a conical trough body is provided in the middle of the bottom end of the separation blade, a boss is provided in the middle of the scraper, and an annularly distributed blades are provided on the circumference of the scraper, the annularly distributed blades are sleeved on the outer side of the bottom end of the separation blade, and the boss is located in the conical trough body, wherein a ring body is provided at the bottom end of the separation blade, a first through groove connected to the deep groove is provided on the outer side of the shaft body, the first through groove is located in the conical trough body, and a shaft sleeve is sleeved on the shaft body, and the shaft sleeve is fitted on the end of the scraper.

[0011] Furthermore, a conveyor belt assembly is installed between the two first side plates, and a rolling assembly is installed above the conveyor belt assembly.

[0012] Furthermore, the rolling assembly includes two vertically distributed columns, a roller is installed between the two columns, a driving motor connected to the roller is installed on the outer side of one of the columns, and sieve holes are opened on the outer side surface of the roller.

[0013] Further, a flow guide plate is installed between the two columns. The flow guide plate is of a U-shaped structure, and the extension groove of the flow guide plate is located below the port of the drum.

[0014] Further, the conveyor belt assembly includes a conveyor belt, and a plurality of convex ribs are provided on the outer side surface of the conveyor belt.

[0015] The present invention has the following beneficial effects: 1. The separation assembly provided by the present invention is vertically distributed. The muddy water in the feed tank enters the inner part of the upper shell through the connecting flange. The shaft body and the separation blades rotate synchronously. After the muddy water enters the housing part, the rotating separation blades separate impurities of different masses in the muddy water through centrifugal force. Since the upper shell is of a conical shell structure, the cross-section of the upper shell gradually increases downward. As the bottom of the separation blade gradually increases, the linear velocity at the bottom of the separation blade is greater than the linear velocity at the top of the separation blade during the rotation process, thereby improving the separation effect of the muddy water at the bottom.

[0016] 2. During the process of the drum of the present invention squeezing the conveyor belt, the water in the sludge permeates into the inside of the drum through the filter holes opened on the surface of the drum. The entered water converges and flows outwards through the lower parts at both ends of the drum. The water flowing out through the drum falls on the flow guide plate to realize the collection of the water flow, thereby realizing the re-separation of the water in the sludge discharged by the separation assembly and reducing the water content of the separated sludge.

[0017] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the installation structure of the lower bracket and the separation assembly of the present invention; Figure 3 is a schematic diagram of the partial structure of the present invention; Figure 4 For the present invention Figure 2 is a schematic cross-sectional structure diagram; Figure 5 is a schematic diagram of the installation structure of the separation assembly of the present invention; Figure 6 For the present inventionFigure 5 Exploded structure schematic diagram; Figure 7 It is an exploded structure schematic diagram of the separation component of the present invention; Figure 8 It is an internal structure schematic diagram of the separation component of the present invention; Figure 9 For the present invention Figure 8 Cross-sectional structure schematic diagram; Figure 10 It is a structure schematic diagram of the conveyor belt component of the present invention; Figure 11 For the present invention Figure 10 Cross-sectional structure schematic diagram; Figure 12 It is a partial structure schematic diagram of the rolling component of the present invention; In the drawings, the list of components represented by each label is as follows: In the figure: 1, lower support; 101, first side plate; 102, top plate; 103, cross plate; 104, discharge chute; 2, upper support; 201, second side plate; 202, feed chute; 203, connecting flange; 204, vertical plate; 3, drain pipe; 301, first water outlet pipe; 302, second water outlet pipe; 303, interface; 4, separation component; 401, upper housing; 402, lower housing; 4021, discharge port; 403, gasket; 404, shaft body; 4041, deep groove; 4042, first through groove; 405, spiral blade; 406, separation blade; 4061, ring body; 407, scraping member; 4071, boss; 408, bushing; 5, drive component; 6, conveyor belt component; 7, rolling component; 701, column; 702, roller; 703, drive motor; 8, guide plate. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 - 12 As shown, the present invention is a solid-liquid separation device for treating sewage sludge, including a lower support 1. The lower support 1 includes two vertically distributed first side plates 101. A top plate 102 and a cross plate 103 are installed between the two first side plates 101. The first side plates 101, the top plate 102 and the cross plate 103 are welded together, and at the same time, the first side plates 101 are perpendicular to both the top plate 102 and the cross plate 103; Among them, the first side plates 101, the top plate 102 and the cross plate 103 are all made of steel plate structures; At least one round hole is formed in the top plate 102, and the bottom end of the separation assembly 4 is fitted and installed in the round hole. The number of round holes is the same as that of the separation assemblies 4. At least one separation assembly 4 is installed on the lower bracket 1. According to the processing requirements, the installation quantity of the separation assemblies 4 can be increased. An upper bracket 2 is installed on the lower bracket 1. The upper bracket 2 has a feed chute 202 communicating with the separation assembly 4. A drain pipe 3 is provided above the feed chute 202, and the drain pipe 3 communicates with the top end of the separation assembly 4. A driving assembly 5 connected to the separation assembly 4 is installed inside the lower bracket 1. The driving assembly 5 has a protective shell. A gear assembly is installed inside the protective shell. A driving motor is installed outside the protective shell. The driving motor is in transmission connection with the gear assembly. A driven wheel is installed on the shaft body 404. The driven wheel is located inside the protective shell and is in cooperation with the gear assembly. The driving motor drives the driven wheel to rotate through the gear assembly. Since the driven wheel is installed on the shaft body 404, the driving motor drives the shaft body 404 to rotate. The separation assembly 4 includes a housing part with openings at both the upper and lower ends, a shaft body 404 with a deep groove 4041 formed at the top end, and separation blades 406. Separation blades 406 are provided inside the housing part. The shaft body 404 passes through the separation blades 406. At the same time, both ends of the shaft body 404 extend out of the housing part. The housing part and the separation blades 406 are both conical structures. The gap between the outer side surface of the separation blades 406 and the inner wall of the housing part gradually increases downward. Due to the different solid contents at the upper and lower ends, the separation blades 406 are conical structures. The rotation speed of the upper end of the separation blades 406 is less than that of the lower end of the separation blades 406, improving the solid-liquid separation effect at the lower end, thereby realizing the separation of the solid substances with less content at the lower end.

[0022] The housing part includes an upper housing 401 and a lower housing 402. The top end of the upper housing 401 communicates with a connection flange 203 provided at the bottom of the feed chute 202. A gasket 403 is installed between the upper housing 401 and the lower housing 402. A discharge port 4021 is provided on the outer side of the lower housing 402. The discharge port 4021 faces the discharge chute 104. The discharge chute 104 is installed between two first side plates 101. A spiral blade 405, separation blades 406 and a scraping member 407 are sequentially sleeved on the shaft body 404. The spiral blade 405 is located in the feed chute 202. During the rotation of the spiral blade 405, it is convenient to push the materials inside the feed chute 202 into the upper housing 401, and at the same time, it avoids the blockage of the upper port of the upper housing 401. A conical groove is provided in the middle of the bottom end of the separation blade 406. A boss 4071 is provided in the middle of the scraping member 407. Blades distributed in a ring are provided on the peripheral side of the scraping member 407. The blades distributed in a ring are sleeved on the outer side of the bottom end of the separation blade 406. At the same time, the boss 4071 is located in the conical groove; A ring body 4061 is provided at the bottom end of the separation blade 406; A first through groove 4042 communicating with the deep groove 4041 is provided on the outer side surface of the shaft body 404. The first through groove 4042 is located in the conical groove. A shaft sleeve 408 is sleeved on the shaft body 404. The shaft sleeve 408 is fitted at the end of the scraping member 407; The provided separation assembly 4 is vertically distributed. The muddy water inside the feed trough 202 enters the inside of the upper housing 401 through the connecting flange 203. The shaft body 404 and the separation blade 406 rotate synchronously. After the muddy water enters the housing member, the rotating separation blade 406 separates impurities of different masses in the muddy water through centrifugal force; Since the upper housing 401 is a conical housing structure, the cross-section of the upper housing 401 gradually increases downward. As the bottom of the separation blade 406 gradually increases, during the rotation process, the linear velocity at the bottom of the separation blade 406 is greater than the linear velocity at the top of the separation blade 406, thereby improving the separation effect of the muddy water at the bottom; Since the gap between the outer side surface of the separation blade 406 and the inner wall of the housing member gradually increases downward, the distance between the separated sludge and the water in the middle is increased, avoiding mixing; A discharge port 4021 is provided on the outer side of the lower housing 402. At the same time, the scraping member 407 is located inside the lower housing 402. The blades distributed in a ring on the peripheral side of the scraping member 407 are inclined. The rotating blades push the slurry attached to the vertical inner wall of the lower housing 402 and the bottom end of the inner wall of the upper housing 401 toward the discharge port 4021; A ring body 4061 is provided at the bottom of the shaft body 404. The bottom end of the ring body 4061 is closed by the scraping member 407. After separation, the increased water flows out along the boss 4071 to the first through groove 4042. In addition, spiral blades can be installed in the deep groove 4041 to facilitate the discharge of the liquid during the rotation process.

[0023] The drive assembly 5 is installed on the cross plate 103. The drive assembly 5 is connected to the shaft body 404; The upper bracket 2 includes a second side plate 201. Both sides of the feed trough 202 are connected with the second side plate 201. The second side plate 201 is installed on the top plate 102. The sludge raw material is added to the inside of the feed trough 202; A plurality of grooves are provided on the bottom surface of the feed trough 202. The bottom surface of the grooves communicates with the connecting flange 203. The connecting flange 203 is connected to the upper port of the upper housing 401 through bolts; Vertical plates 204 are installed on both opposite sides of the feed chute 202, and a drain pipe 3 is placed on the two vertical plates 204. Both ends of the drain pipe 3 are provided with a first water outlet pipe 301 and a second water outlet pipe 302, and the position of the first water outlet pipe 301 is lower than that of the second water outlet pipe 302. At least one interface 303 is provided on the outer side surface of the drain pipe 3, and the top end of the shaft body 404 passes through the corresponding interface 303 and extends deep into the interior of the drain pipe 3.

[0024] The top end of the shaft body 404 extends deep into the interior of the drain pipe 3. The end face height of the shaft body 404 is higher than the height of the first water outlet pipe 301. The water discharged through the shaft body 404 falls into the interior of the drain pipe 3. Since a control valve is installed at the port of the first water outlet pipe 301, the port of the first water outlet pipe 301 is sealed during the drainage process. As the incoming water increases, the water flows out through the second water outlet pipe 302. During the process of the separation assembly 4 stopping, the control valve is opened to discharge the remaining water inside the drain pipe 3 and the sediment remaining at the bottom.

[0025] A conveyor belt assembly 6 is installed between the two first side plates 101, and a rolling press assembly 7 is installed above the conveyor belt assembly 6. The conveyor belt assembly 6 is inclined. The conveyor belt assembly 6 includes two parallel side plates. Two rotating rollers are installed between the two side plates. A conveyor belt is sleeved outside the two rotating rollers. Convex ridges are provided on both the outer side surface and the inner side surface of the conveyor belt, and the convex ridges are distributed along the width direction. A number of grooves are formed on the outer side surface of the rotating roller. The convex ridges on the inner side surface of the conveyor belt cooperate with the grooves, thereby increasing the resistance to relative sliding between the rotating roller and the conveyor belt and improving the transmission effect. The width of the discharge port of the discharge chute 104 is smaller than the width of the conveyor belt. The silt falling through the discharge chute 104 lands in the middle of the upper surface of the conveyor belt. At the same time, the silt is located between two adjacent convex ridges on the upper surface of the conveyor belt. The rolling press assembly 7 squeezes the silt, and the silt extends to both sides along the convex ridges. The rolling press assembly 7 includes two vertically distributed columns 701. A roller 702 is installed between the two columns 701. A driving motor 703 connected to the roller 702 is installed outside one of the columns 701. Among them, a number of sieve holes are formed on the outer side surface of the roller 702. The middle part of the roller 702 is of a sleeve structure. The sleeve is connected to the inner wall of the roller 702 through a support plate. During the process of the roller 702 squeezing the conveyor belt, the water in the silt penetrates into the interior of the roller 702 through the filter holes formed on the surface of the roller 702. The incoming water converges and flows outwards from the lower parts at both ends of the roller 702. A guide plate 8 is installed between the two columns 701. The guide plate 8 is of a U-shaped structure. The extension groove of the flow deflector 8 is located on the lower side of the port of the drum 702, and the water flowing out through the drum 702 falls on the flow deflector 8 to achieve the collection of water flow, thereby realizing the re-separation of the water in the sludge discharged by the separation component 4 and reducing the water content of the separated sludge.

[0026] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A solid-liquid separation device for sewage sludge treatment, comprising a lower support (1), characterized in that: At least one separation component (4) is mounted on the lower bracket (1); an upper bracket (2) is mounted on the lower bracket (1), the upper bracket (2) having a feed trough (202) connected to the separation component (4), a drain pipe (3) being arranged above the feed trough (202), the drain pipe (3) being connected to the top end of the separation component (4); a drive component (5) connected to the separation component (4) is mounted in the lower bracket (1); the separation component (4) comprises a shell member having openings at both ends, a shaft body (404) having a deep groove (4041) at the top end, and a separation blade (406), the shell member having a separation blade (406), the shaft body (404) passing through the separation blade (406), and both ends of the shaft body (404) extending out of the shell member; wherein the shell member and the separation blade (406) are both conical structures, and the gap between the outer side surface of the separation blade (406) and the inner wall of the shell member gradually increases downwards.

2. A solid-liquid separation device for sewage sludge treatment according to claim 1, characterized in that: The lower bracket (1) comprises two vertically distributed first side plates (101); a top plate (102) and a horizontal plate (103) are installed between the two first side plates (101); at least one circular hole is provided on the top plate (102), and the bottom end of the separation component (4) is mounted in the circular hole; the drive component (5) is mounted on the horizontal plate (103), and the drive component (5) is connected to the shaft body (404).

3. A solid-liquid separation device for sewage sludge treatment according to claim 1, characterized in that: The upper bracket (2) comprises a second side plate (201), and opposite sides of the feed trough (202) are both connected to the second side plates (201), and the second side plates (201) are mounted on the top plate (102).

4. A solid-liquid separation device for sewage sludge treatment according to claim 3, characterized in that: Vertical plates (204) are installed on opposite sides of the feed trough (202), and drainage pipes (3) are placed on the two vertical plates (204); a first water outlet pipe (301) and a second water outlet pipe (302) are provided at both ends of the drainage pipe (3), and the position of the first water outlet pipe (301) is lower than that of the second water outlet pipe (302); at least one interface (303) is provided on the outer surface of the drainage pipe (3), and the top end of the shaft (404) passes through the corresponding interface (303) and penetrates into the interior of the drainage pipe (3).

5. A solid-liquid separation device for sewage sludge treatment according to claim 1, characterized in that: The shell member comprises an upper shell (401) and a lower shell (402); the top end of the upper shell (401) is in communication with a connecting flange (203) provided at the bottom of the feed trough (202); a sealing gasket (403) is installed between the upper shell (401) and the lower shell (402); a discharge port (4021) is provided on the outer side of the lower shell (402); the discharge port (4021) faces the discharge trough (104); and the discharge trough (104) is installed between the two first side plates (101).

6. A solid-liquid separation device for sewage sludge treatment according to claim 5, characterized in that: The shaft body (404) is sleeved with a spiral blade (405), a separation blade (406) and a scraper (407) in sequence, the spiral blade (405) being located in the feed trough (202); a conical trough is provided in the middle of the bottom end of the separation blade (406), a boss (4071) is provided in the middle of the scraper (407), and an annularly distributed blade is provided on the circumference of the scraper (407), the annularly distributed blade is sleeved on the separation blade (406), and the spiral blade (405) is located in the feed trough (202). ) at the outside of the bottom end, and the boss (4071) is located in the conical groove body; wherein, the bottom end of the separation blade (406) is provided with a ring body (4061); the outer side surface of the shaft body (404) is provided with a first through groove (4042) connected to the deep groove (4041), and the first through groove (4042) is located in the conical groove body; the shaft body (404) is sleeved with a shaft sleeve (408), and the shaft sleeve (408) is matched with the end of the scraper (407).

7. A solid-liquid separation device for sewage sludge treatment according to claim 2, characterized in that: A conveyor belt assembly (6) is installed between the two first side plates (101), and a rolling assembly (7) is installed above the conveyor belt assembly (6).

8. The solid-liquid separation device for sewage sludge treatment according to claim 1, characterized in that: The rolling assembly (7) comprises two vertically distributed columns (701), a roller (702) is installed between the two columns (701), and a driving motor (703) connected to the roller (702) is installed on the outer side of one of the columns (701); wherein a sieve hole is provided on the outer side surface of the roller (702).

9. A solid-liquid separation device for sewage sludge treatment according to claim 8, characterized in that: A guide plate (8) is installed between the two upright posts (701), and the guide plate (8) is a U-shaped structure; the extension groove of the guide plate (8) is located at the lower side of the port of the drum (702).

10. A solid-liquid separation device for sewage sludge treatment according to claim 8, characterized in that: The conveyor belt assembly (6) comprises a conveyor belt, and a plurality of ridges are provided on the outer side surface of the conveyor belt.

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