Phenolic resin sewage treatment sedimentation tank

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a phenolic resin sewage treatment settling tank which comprises a water storage tank, a water inlet pipe penetrates through the bottom of the water storage tank, and a water distribution barrel is connected to the top of the water inlet pipe. A first scraper support and a second scraper support are installed below the rotating bridge frame and are installed in the circumferential direction of the reservoir at intervals, and a plurality of grooves and second scrapers are arranged on the lower side of the first scraper support in the length direction of the first scraper support in a staggered mode. A plurality of second scrapers and grooves are arranged on the lower side of the second scraper support in a staggered mode in the length direction of the second scraper support, connecting rods are fixedly installed in the grooves, first scrapers are rotatably installed on the connecting rods, a plurality of coulters are installed on the first scrapers, and the front sides of the first scrapers are connected with the inner walls of the grooves through springs. A check block is arranged on the rear side of the first scraper and located on the inner wall of the groove, and cleaning efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sedimentation tank for treating phenolic resin sewage. Background Technique

[0002] The statements herein only provide the background technique related to the utility model and do not necessarily constitute the prior art.

[0003] A sewage sedimentation tank is a sewage treatment device that filters sludge in water through precipitation. In the current technology, a radial flow sedimentation tank can be used for the sewage tank treating phenolic resin sludge. The radial flow sedimentation tank is usually used for sewage treatment. The radial flow sedimentation tank has a circular structure. Sewage enters from the center and flows radially outward. The precipitated sludge is deposited at the bottom of the tank, and the clear water flows out from the periphery. The function of the sludge scraper is to scrape and collect the precipitated sludge. The sludge scraper is usually composed of slats or scrapers made of metal materials and is installed radially on the rotating bridge. There is a gap of several millimeters to several centimeters between the scraper and the bottom of the tank to avoid direct friction with the bottom of the tank but can effectively scrape the sludge.

[0004] When the sedimentation tank treats phenolic resin sewage, the following problems exist. There are unreacted phenolic resin and additives in the phenolic resin sewage. The unreacted phenolic resin is phenolic resin particles that are not completely cured or remain in the production process and may contain some unreacted phenol, formaldehyde or their polycondensation intermediates. The additives are fillers (such as wood powder, fiber), curing agents (such as hexamethylenetetramine) or plasticizers added in resin production, etc. When the sludge scraper is actually working, generally, after the sedimentation tank precipitates sludge for a period of time, the sludge removal is started. During this period, as the sludge accumulates continuously, the mixture of additives and phenolic resin particles will accumulate at the bottom of the water tank to form hardening. After the mixture hardens, the hardness increases and the adhesion force enhances. The scraping resistance of the scraper of the sludge scraper increases. It is not easy for the flat sludge scraper of the sludge scraper to loosen the hardened sludge and needs to be scraped several times to be removed, and the cleaning efficiency is low. Summary of the Utility Model

[0005] In view of the above problems, the utility model provides a sedimentation tank for treating phenolic resin sewage, which breaks the hardened sludge through a plow blade, and at the same time continues to scrape and collect the broken sludge through a second scraper to improve the cleaning efficiency; it can also improve the strength of the first scraper support and the second scraper support.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A sedimentation tank for treating phenolic resin sewage includes a reservoir. A water inlet pipe penetrates through the bottom of the reservoir. The top of the water inlet pipe is connected to a water distribution cylinder. A connecting shaft is fixedly installed at the top of the water distribution cylinder. The connecting shaft penetrates through the center of the rotating bridge. The first scraper support and the second scraper support are installed below the rotating bridge.

[0008] The first scraper support and the second scraper support are installed at intervals along the circumferential direction of the reservoir. A number of grooves and second scrapers are arranged staggeredly on the lower side of the first scraper support and along the length direction of the first scraper support. A number of second scrapers and grooves are arranged staggeredly on the lower side of the second scraper support and along the length direction of the second scraper support.

[0009] A connecting rod is fixedly installed in the groove. The connecting rod rotatably installs a first scraper. A number of plow knives are installed on the first scraper. The front side of the first scraper is connected to the inner wall of the groove through a spring. A stop block is arranged on the inner wall of the groove at the rear side of the first scraper.

[0010] It is further set that the coupling shaft is installed on the rotating bridge through a bearing, and the rotating bridge is rotatably installed on the coupling shaft.

[0011] It is further set that one end of the rotating bridge is fixedly installed with a motor. A first roller seat is fixedly installed below the rotating bridge. A first wheel shaft is rotatably installed through the first roller seat. A first roller is fixedly installed on the first wheel shaft. The end of the motor is connected to a first belt pulley through a first rotating shaft. A second belt pulley is fixedly installed at one end of the first wheel shaft. A transmission belt is wrapped around the outer sides of the first belt pulley and the second belt pulley. The first roller is rotatably installed between the first roller seats through the first wheel shaft, and the first roller contacts the top of the reservoir.

[0012] It is further set that a second roller seat is fixedly installed at the other end of the rotating bridge and below the rotating bridge. A second wheel shaft is rotatably installed in the second roller seat. A second roller is fixedly installed on the second wheel shaft.

[0013] It is further set that the first scraper support is L-shaped. A number of support rods are fixedly installed between the first scraper support and the rotating bridge. A rib plate is obliquely installed between the support rod and the first scraper support.

[0014] It is further set that the second scraper support is L-shaped. A number of support rods are fixedly installed between the second scraper support and the rotating bridge. A rib plate is obliquely installed between the support rod and the second scraper support.

[0015] It is further set that the first scraper includes a mounting plate. A number of plow knives are installed along the length direction of the mounting plate. A perforation is arranged on the side wall of the mounting plate. The mounting plate is installed on the connecting rod through the perforation.

[0016] It is further set that a drainage trough is installed in the reservoir, and the drainage trough is connected with a drain pipe.

[0017] It is further set that a sludge collecting trough is arranged at the center of the bottom of the reservoir, and the sludge collecting trough is communicated with a sludge discharge pipe.

[0018] It is further set that a number of water outlet ports are evenly arranged on the side wall of the water distribution cylinder.

[0019] Advantages of the above one or more technical solutions:

[0020] The utility model modifies the scraper structure. When there is compacted sludge at the bottom of the pool, the compacted sludge blocks the first scraper. At this time, the first scraper with a plow blade tilts, and the sharp part of the plow blade inserts into the compacted sludge. Driven by the rotating bridge, the plow blade cuts the compacted sludge, making the compacted part broken and loosened. Since the first scrapers on the first scraper support and the second scraper support are arranged corresponding to each other in a staggered manner, the sludge broken by the plow blade on the first scraper of the first scraper support is continuously scraped and collected by the second scraper of the second scraper support rotated from the rear, making the sludge flow towards the sludge collecting tank. The compacted sludge is broken by the plow blade, and at the same time, the second scraper continues to scrape and collect to ensure the scraping and collection of the broken sludge, improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The schematic drawings forming a part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation to this application.

[0022] Figure 1 is a schematic structural diagram of the utility model;

[0023] Figure 2 is a schematic structural diagram of the first scraper of the utility model;

[0024] Figure 3 is Figure 1 a partial enlarged view of part A in

[0025] Figure 4 is a schematic structural diagram of the first scraper of the utility model when it contacts the compacted sludge;

[0026] Figure 5 is a schematic structural diagram of the first scraper of the utility model when breaking the compacted sludge.

[0027] In the figure, 1, water storage tank; 2, water inlet pipe; 3, water distribution cylinder; 4, coupling shaft; 5, rotating bridge; 6, first scraper support; 7, second scraper support; 8, groove; 9, second scraper; 10, first scraper; 11, plow blade; 12, spring; 13, connecting rod; 14, stop block; 15, motor; 16, first roller seat; 17, first roller shaft; 18, first roller; 19, first rotating shaft; 20, first belt pulley; 21, second belt pulley; 22, transmission belt; 23, second roller seat; 24, second roller shaft; 25, second roller; 26, support rod; 27, rib plate; 28, perforation; 29, drainage groove; 30, drain pipe; 31, sludge collecting tank; 32, water outlet; 321, sludge discharge pipe; 33, mounting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will describe the specific implementation manners of this embodiment with reference to the accompanying drawings.

[0029] This technical solution provides a phenolic resin sewage treatment sedimentation tank. Referring to Figure 1 , it includes a reservoir 1. The reservoir 1 is a central inlet radial flow sedimentation tank. The inlet part of the central inlet radial flow sedimentation tank is at the center of the tank. Specifically, a water inlet pipe 2 is arranged through the bottom of the reservoir 1. The top of the water inlet pipe 2 is connected to a water distribution cylinder 3. A number of water outlet ports 32 are evenly arranged on the side wall of the water distribution cylinder 3. A sludge collection tank 31 is arranged at the center of the bottom of the reservoir 1. The sludge collection tank 31 is communicated with a sludge discharge pipe 321. A drainage tank 29 is installed in the reservoir 1, and the drainage tank 29 is connected to a drainage pipe 30.

[0030] As a specific implementation manner, when sedimentation operation is required, the water inlet pipe 2 is opened, and the liquid to be treated is guided through the bottom water inlet pipe 2. The liquid to be treated flows upward along the water inlet pipe 2 to the water distribution cylinder 3, and then the liquid to be treated flows out from the water distribution ports of the water distribution cylinder 3 to the surroundings.

[0031] After the liquid to be treated flows out, the suspended substances settle downward. Since the bottom of the reservoir 1 is conically arranged, the sludge formed by the sedimentation of the suspended substances gathers along the inclined surface of the conical bottom of the reservoir 1 to the sludge collection tank 31 arranged at the center of the bottom of the reservoir 1, which is convenient for the collection of bottom sludge. The sludge collection tank 31 is communicated with the sludge discharge pipe 321. When it is necessary to discharge the sludge, the sludge discharge pipe 321 is opened to discharge the sludge.

[0032] A drainage tank 29 is installed in the reservoir 1. The drainage tank 29 is connected to a drainage pipe 30. The height of the inner wall of the drainage tank 29 is less than the height of the outer wall of the reservoir 1. After the sludge settles downward, the separated sewage overflows from the inner wall of the drainage tank 29 into the drainage tank 29 and is discharged by the drainage pipe 30.

[0033] In this embodiment, referring to Figure 1 and 2 , a coupling shaft 4 is fixedly installed at the top of the water distribution cylinder 3. The coupling shaft 4 passes through the center of a rotating bridge 5. The coupling shaft 4 is installed on the rotating bridge 5 through bearings. The rotating bridge 5 is rotatably installed on the coupling shaft 4. One end of the rotating bridge 5 is fixedly installed with a motor 15. A first roller seat 16 is fixedly installed below the rotating bridge 5. A first roller shaft 17 is rotatably installed through the first roller seat 16. A first roller 18 is fixedly installed on the first roller shaft 17. The end of the motor 15 is connected to a first pulley 20 through a first rotating shaft 19. A second pulley 21 is fixedly installed at one end of the first roller shaft 17. A transmission belt 22 is wound around the outer sides of the first pulley 20 and the second pulley 21. The first roller 18 is rotatably installed between the first roller seats 16 through the first roller shaft 17, and the first roller 18 contacts the top end of the reservoir 1.

[0034] As a specific implementation manner, in order to clean and scrape the silt at the bottom of the reservoir 1, it is necessary to drive the first scraper 10 and the second scraper 9 below to rotate and scrape through the rotation of the rotating bridge 5. After the motor 15 is started, the rotation of the motor 15 drives the first rotating shaft 19 at the end to rotate. The first rotating shaft 19 drives the transmission belt 22 to rotate through the first pulley 20. The transmission belt 22 drives the second pulley 21 to rotate. Since the second pulley 21 is fixedly connected to the first rotating shaft 17 and the first rotating shaft 17 is fixedly installed on the first roller 18, the rotation of the second pulley 21 can drive the first roller 18 to rotate through the first rotating shaft 17. The rotation of the first roller 18 causes the first roller 18 to roll along the top of the reservoir 1. Since the center of the rotating bridge 5 is movably installed on the coupling shaft 4 at the top of the water distribution cylinder 3, the rotation of the first roller 18 will drive the rotating bridge 5 to rotate.

[0035] In order to ensure the stability of the rotation of the rotating bridge 5, a second roller seat 23 is fixedly installed at the other end of the rotating bridge 5 and below the rotating bridge 5. A second rotating shaft 24 is rotatably installed in the second roller seat 23, and a second roller 25 is fixedly installed on the second rotating shaft 24. When the rotating bridge 5 rotates, the second roller 25 rotates along the top of the reservoir 1.

[0036] In this embodiment, referring to Figure 1 , since a number of plow blades 11 are installed on the first scraper 10 and the plow blades 11 are subject to greater resistance when breaking the compacted silt, the force received by the plow blades 11 will be borne by the first scraper support 6 and the second scraper support 7. Therefore, in order to improve the strength of the first scraper support 6 and the second scraper support 7, a number of support rods 26 are provided on the basis of the original L-shaped support, and rib plates 27 are arranged obliquely on the support rods 26. The formed triangular structure can improve the strength of the first scraper support 6 and the second scraper support 7.

[0037] Specifically, a first scraper support 6 and a second scraper support 7 are installed below the rotating bridge 5. The first scraper support 6 is set in an L shape. A number of support rods 26 are fixedly installed between the first scraper support 6 and the rotating bridge 5, and rib plates 27 are installed obliquely between the support rods 26 and the first scraper support 6. The second scraper support 7 is set in an L shape. A number of support rods 26 are fixedly installed between the second scraper support 7 and the rotating bridge 5, and rib plates 27 are installed obliquely between the support rods 26 and the second scraper support 7.

[0038] In this embodiment, referring to Figure 1 and Figure 2, the first scraper support 6 and the second scraper support 7 are installed at intervals along the circumferential direction of the reservoir 1. Specifically, the first scraper support 6 and the second scraper support 7 are arranged at an interval of 180° along the circumferential direction of the reservoir 1. A number of grooves 8 and the second scrapers 9 are arranged staggeredly under the first scraper support 6 and along the length direction of the first scraper support 6. A number of the second scrapers 9 and grooves 8 are arranged staggeredly under the second scraper support 7 and along the length direction of the second scraper support 7. There is a gap between the first scraper 10 and the second scraper 9 and the bottom wall of the reservoir 1, so as to ensure that the silt can flow in the gap, and at the same time prevent the first scraper 10 and the second scraper 9 from scraping the bottom wall of the reservoir 1 during the movement process.

[0039] As a specific implementation manner, the second scraper 9 with a planar structure can easily scrape off the sludge with a relatively loose texture, but it is no longer easy to scrape off the sludge with a hard texture after caking. Therefore, the first scraper 10 with a plow blade 11 is provided. The plow blade 11 is used for crushing. The crushed sludge fragments still need to be scraped and collected by the scraper with a planar structure. Therefore, the first scraper support 6 and the second scraper support 7 are arranged at an interval of 180° along the circumferential direction of the reservoir 1. At the same time, the first scrapers 10 with plow blades 11 and the second scrapers 9 with planar structures on the first scraper support 6 and the second scraper support 7 are arranged staggeredly, so as to ensure that after the first scraper 10 with a plow blade 11 in the front rotates for crushing, the second scraper 9 immediately scrapes off the crushed silt along the rotation track of the first scraper 10.

[0040] In this embodiment, referring to Figure 4 and 5 , a connecting rod 13 is fixedly installed in the groove 8. The connecting rod 13 rotatably installs the first scraper 10. A number of plow blades 11 are installed on the first scraper 10. The front side of the first scraper 10 is connected to the inner wall of the groove 8 through a spring 12. A stop block 14 is arranged on the rear side of the first scraper 10 and on the inner wall of the groove 8. The first scraper 10 includes a mounting plate 33. A number of plow blades 11 are installed along the length direction of the mounting plate 33. A through hole 28 is arranged on the side wall of the mounting plate. The mounting plate is installed on the connecting rod 13 through the through hole 28.

[0041] As a specific implementation manner, when the plow blade 11 touches the caked sludge, at this time, the plow blade 11 drives the first scraper 10 to rotate along the connecting rod 13 under the obstruction of the sludge. The first scraper 10 is inclined. The sharp part of the plow blade 11 is inserted into the caked silt. Driven by the rotating bridge 5, the plow blade 11 cuts the caked silt, so that the caked part is broken and loosened.

[0042] The working principle of the sedimentation tank is as follows:

[0043] Open the water inlet pipe 2, and divert the liquid to be treated through the water inlet pipe 2 at the bottom. The liquid to be treated flows out from the water diversion port of the water diversion cylinder 3 along the water inlet pipe 2 to the surroundings;

[0044] After the liquid to be treated flows out, the suspended matter precipitates downward, and the sludge accumulates in the sludge collecting tank 31 provided at the center of the bottom of the reservoir 1. When it is necessary to discharge the sludge, the sludge discharge pipe 321 is opened to discharge the sludge;

[0045] When it is necessary to discharge the separated sewage, the separated sewage flows through the drainage tank 29 to the drainage pipe 30. The drainage pipe 30 is opened, and the separated sewage overflows from the inner wall of the drainage tank 29 into the drainage tank 29 and is discharged by the drainage pipe 30.

[0046] The crushing principle is as follows:

[0047] The motor 15 is started. The rotation of the motor 15 drives the rotation of the first rotating shaft 19 at the end. The first rotating shaft 19 drives the rotation of the transmission belt 22 through the first pulley 20. The transmission belt 22 drives the rotation of the second pulley 21. The rotation of the second pulley 21 drives the rotation of the first roller 18 through the first roller shaft 17, so that the first roller 18 rolls along the top of the reservoir 1. Since the center of the rotating bridge 5 is movably installed on the coupling shaft 4 at the top of the water dividing cylinder 3, the rotation of the first roller 18 will drive the rotation of the rotating bridge 5. The rotating bridge 5 drives the rotation of the first scraper support 6 and the second scraper support 7. The first scraper 10 with the plow blade 11 on the first scraper support 6 rotates to crush the compacted sludge. Driven by the rotating bridge 5, the plow blade 11 cuts the compacted sludge, making the compacted part broken and loose. The second scraper 9 on the first scraper support 6 scrapes the crushed sludge immediately along the rotation track of the first scraper 10.

[0048] Although the specific implementation manners of the present invention are described above in conjunction with the drawings, it is not a limitation on the protection scope of the present invention. Those skilled in the art should understand that based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. A phenolic resin sewage treatment sedimentation tank, comprising a reservoir, a water inlet pipe is arranged through the bottom of the reservoir, the top of the water inlet pipe is connected to a water distribution cylinder, a connecting shaft is fixedly installed at the top of the water distribution cylinder, and the connecting shaft passes through the center of the rotary bridge. It is characterized in that, A first scraper support and a second scraper support are installed below the rotating bridge frame; The first scraper support and the second scraper support are installed at intervals along the circumferential direction of the reservoir. A plurality of grooves and second scrapers are staggered along the length direction of the first scraper support on the lower side of the first scraper support, and a plurality of second scrapers and grooves are staggered along the length direction of the second scraper support on the lower side of the second scraper support; A connecting rod is fixedly installed in the groove. The connecting rod rotatably installs a first scraper. A plurality of plow blades are installed on the first scraper. The front side of the first scraper is connected to the inner wall of the groove by a spring, and a stop block is arranged on the inner wall of the groove at the rear side of the first scraper.

2. The phenolic resin sewage treatment sedimentation tank according to claim 1, wherein The coupling shaft is installed on the rotating bridge frame through a bearing, and the rotating bridge frame is rotatably installed on the coupling shaft.

3. The phenolic resin sewage treatment sedimentation tank according to claim 1, characterized in that, One end of the rotating bridge frame is fixedly installed with a motor. A first roller seat is fixedly installed below the rotating bridge frame. A first wheel shaft is rotatably installed through the first roller seat. A first roller is fixedly installed on the first wheel shaft. The end of the motor is connected to a first belt pulley through a first rotating shaft. A second belt pulley is fixedly installed at one end of the first wheel shaft. A transmission belt is wound around the outer sides of the first belt pulley and the second belt pulley. The first roller is rotatably installed between the first roller seats through the first wheel shaft, and the first roller contacts the top of the reservoir.

4. The phenolic resin sewage treatment sedimentation tank according to claim 3, characterized in that, The other end of the rotating bridge frame and below the rotating bridge frame is fixedly installed with a second roller seat. A second wheel shaft is rotatably installed in the second roller seat, and a second roller is fixedly installed on the second wheel shaft.

5. The phenolic resin sewage treatment sedimentation tank according to claim 1, wherein The first scraper support is arranged in an L shape. A plurality of support rods are fixedly installed between the first scraper support and the rotating bridge frame, and rib plates are obliquely installed between the support rods and the first scraper support.

6. The phenolic resin sewage treatment sedimentation tank according to claim 1, characterized in that, The second scraper support is arranged in an L shape. A plurality of support rods are fixedly installed between the second scraper support and the rotating bridge frame, and rib plates are obliquely installed between the support rods and the second scraper support.

7. The phenolic resin sewage treatment sedimentation tank according to claim 1, characterized in that, The first scraper includes a mounting plate. A plurality of plow blades are installed along the length direction of the mounting plate. A perforation is arranged on the side wall of the mounting plate, and the mounting plate is installed on the connecting rod through the perforation.

8. The phenolic resin sewage treatment sedimentation tank according to claim 1, characterized in that, A drain trough is installed in the reservoir, and the drain trough is connected with a drain pipe.

9. The phenolic resin sewage treatment sedimentation tank according to claim 1, characterized in that, A sludge collecting trough is arranged at the center of the bottom of the reservoir, and the sludge collecting trough is communicated with a sludge discharge pipe.

10. The phenolic resin sewage treatment sedimentation tank according to claim 1, characterized in that, A plurality of water outlets are evenly arranged on the side wall of the water distribution cylinder.

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