Spiral skimming device

Abstract

The utility model provides a spiral skimming device which comprises a first support and a second support which are fixedly connected to the two sides of a sedimentation tank, a driving device is arranged on the first support, a slag discharging device is arranged on the second support, and a spiral blade shaft which is of a hollow structure and floats on the water surface is arranged in the sedimentation tank. The skimming device solves the problem that an existing skimming device for the sewage pool is not ideal in skimming effect and structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field especially relates to a spiral skimming device. BACKGROUND

[0002] The pool surface skimming device of sewage industry is mainly used for removing the surface dross of horizontal flow type sand settling basin and sedimentation tank, avoids the dross from entering the next process and influences the normal operation of subsequent process equipment, and ensures that the water quality reaches the standard. At present, the skimming device widely used in domestic sewage treatment plants is mainly a manual or electric skimming pipe. The dross flows into the skimming pipe through the gap on the skimming pipe under the action of water flow, and is discharged out of the pool body along with the skimming pipe. However, the skimming device has the following shortcomings: a large amount of water is discharged at the same time as the dross is discharged, which increases the burden of subsequent dross and water separation, and the separated water still needs to be returned to the front end of the sewage treatment, which increases the burden of the sewage treatment process; the up-down adjustment range of the skimming position of the skimming device is small, and when the pool liquid level changes greatly, normal skimming cannot be realized. Therefore, a new type of spiral skimming device needs to be invented. SUMMARY

[0003] The utility model aims at providing a new type of spiral skimming device to solve the above problems existing in the current sewage pool skimming device.

[0004] The utility model adopts the technical scheme that

[0005] A spiral skimming device comprises first and second supports fixedly connected to both sides of a sedimentation tank, a driving device arranged on the first support, a dross discharge device arranged on the second support, and a hollow spiral blade shaft floating on the water surface arranged in the sedimentation tank.

[0006] The driving device comprises a driving motor fixed to the first support, a rotating shaft of the driving motor connected to a first end of the spiral blade shaft through a tension chain wheel mechanism, a first guide rail fixedly connected to the lower part of the first support along the height direction, a first sliding block slidingly connected to the first guide rail, and the first sliding block rotationally connected to the first end of the spiral blade shaft.

[0007] The dross discharge device comprises a funnel-shaped dross discharge cylinder, a side wall of the dross discharge cylinder near the inlet fixedly connected to a second sliding block, the lower end of the dross discharge cylinder movably connected to a dross discharge sleeve, and the dross discharge sleeve fixedly connected to the second support. The lower part of the second support is fixedly connected to a second guide rail along the height direction, the second guide rail slidingly connected to the second sliding block, and the second sliding block rotationally connected to a second end of the spiral blade shaft.

[0008] Preferably, in combination with the above scheme, the tensioning sprocket mechanism comprises a driving sprocket fixedly connected to the rotating shaft of the driving motor, a lower redirecting wheel is arranged below the driving sprocket, a first rotating shaft is fixedly connected to the center of the lower redirecting wheel, the first rotating shaft is rotatably connected to the first support, a V-shaped tensioning swing arm is further fixedly connected to the first rotating shaft, and an upper redirecting wheel and a carrier wheel are rotatably connected to the two ends of the swing arm respectively; the first end of the helical blade shaft is fixedly connected with a transmission sprocket, and the transmission sprocket, the upper redirecting wheel, the driving sprocket and the lower redirecting wheel are connected through a first transmission chain.

[0009] Preferably, in combination with the above scheme, a first counterweight connecting rod is fixedly connected to the first sliding block, and a first counterweight is arranged on the first counterweight connecting rod.

[0010] Preferably, in combination with the above scheme, a first bearing is fixedly connected to the first sliding block, and the inner ring of the first bearing is fixedly connected to the first end of the helical blade shaft.

[0011] Preferably, in combination with the above scheme, a second bearing is fixedly connected to the second sliding block, the inner ring of the second bearing is fixedly connected to the second end of the helical blade shaft, and the outer ring of the second bearing is fixedly connected to the side wall of the deslagging cylinder.

[0012] Preferably, in combination with the above scheme, a first blowdown pipe group is connected to the lower end of the deslagging sleeve, the first blowdown pipe group is connected to the inlet of the submersible sewage pump, and the outlet of the submersible sewage pump is connected to a second blowdown pipe group.

[0013] Preferably, in combination with the above scheme, the first blowdown pipe group, the submersible sewage pump and the second blowdown pipe group are fixedly connected to the second support.

[0014] Preferably, in combination with the above scheme, a second counterweight connecting rod is fixedly connected to the second sliding block, and a second counterweight is arranged on the second counterweight connecting rod.

[0015] Preferably, in combination with the above scheme, a liquid level meter is fixedly connected to the first support or the second support, and the liquid level meter and the submersible sewage pump are electrically connected to the controller.

[0016] The helical skimming device has the advantages that the helical shaft system can move up and down within the liquid level in the working range, and the tensioning degree of the driving chain can be maintained during the movement, the floating of the driving force to the helical shaft system can automatically follow the water level change and run, the deslagging is more smooth by using the submersible sewage pump power, the blockage is avoided, and the water content of the deslagging is reduced.

[0017] The utility model will be combined with the drawings and examples to be explained in more detail. DRAWINGS

[0018] Fig. 1 Figure is a spiral skimming device of the utility model.

[0019] Fig. 2 Figure is a right view of a spiral skimming device of the utility model.

[0020] Fig. 3 Figure is a left view of a spiral skimming device of the utility model. DETAILED DESCRIPTION

[0021] As Figs. 1 to 3 shown in a spiral skimming device, including fixedly connected on both sides of the sedimentation tank first support 10, second support 20, the first support 10 is provided with drive device 1, the second support 20 is provided with the discharge device 2, the sedimentation tank is provided with hollow structure and floats on the water surface on the spiral blade shaft 3;

[0022] The drive device 1 includes drive motor 101 fixed on the first support 10, drive motor 101 is equipped with a protective cover, the drive motor 101 the rotating shaft is connected with the first end of the spiral blade shaft 3 through the tension chain wheel mechanism, the lower part of the first support 10 is fixedly connected with the first guide rail 102 along the height direction, the first guide rail 102 is slidably connected with the first sliding block 103, the first sliding block 103 is rotatably connected with the first end of the spiral blade shaft 3;

[0023] The discharge device 2 includes the discharge cylinder 201 of funnel structure, the upper end opening of the discharge cylinder 201 is flush with the water surface, the upper section of the discharge cylinder 201 is conical funnel structure, the lower section is cylindrical structure, the bottom is the flat bottom structure with the hole in the center, the side wall of the discharge cylinder 201 close to the inlet is rotatably connected with the second end of the spiral blade shaft 3, the lower end of the discharge cylinder 201 is movably connected with the discharge sleeve 204, the discharge cylinder 201 and the discharge sleeve 204 are small gap fit, with enough overlapping height, the discharge sleeve 204 is fixedly connected on the second support 20, so that the cylindrical section of the lower section of the discharge cylinder 201 can be moved up and down in the discharge sleeve 204;The lower part of the second support 20 is fixedly connected with the second guide rail 203 along the height direction, the second guide rail 203 is slidably connected with the second sliding block 202, the second sliding block 202 is rotatably connected with the second end of the spiral blade shaft 3.

[0024] In order to adapt the screw blade shaft 3 to the sinking height in the sewage pool by the automatic tensioning of the chain, the tensioning sprocket mechanism comprises a driving sprocket 104 fixedly connected to the rotating shaft of the driving motor 101, a lower redirecting wheel 105 arranged below the driving sprocket 104, a first rotating shaft 106 fixedly connected to the center of the lower redirecting wheel 105, the first rotating shaft 106 being rotatably connected to the first support 10, a V-shaped tensioning swing arm 107 fixedly connected to the first rotating shaft 106, and an upper redirecting wheel 108 and a supporting wheel 109 rotatably connected to the two ends of the swing arm 107, the supporting wheel 109 being close to the upper redirecting wheel 108 for preventing the chain from falling off. The first end of the screw blade shaft 3 is fixedly connected with a transmission sprocket 110, and the transmission sprocket 110, the upper redirecting wheel 108, the driving sprocket 104 and the lower redirecting wheel 105 are connected by a first transmission chain 111, and the overall tensioning sprocket mechanism is arranged in an L-shaped structure. The transmission chain is a plastic part, which is light in weight in water and has almost no self-weight tensioning capacity, and the chain wear and tear suspended in water can pollute the water quality, and the tensioning sprocket mechanism can solve the problem.

[0025] In order to facilitate the adjustment of the counterweight to adjust the sinking height of the screw blade shaft 3 in the sewage, the first sliding block 103 is fixedly connected with a first counterweight connecting rod 120, and the first counterweight connecting rod 120 is provided with a first counterweight 121. The upper part of the first counterweight connecting rod 120 can be connected to the first support 10 by a detachable clamp to ensure that the first counterweight assembly can be fixed, or can be moved up and down after the clamp is detached.

[0026] In order to facilitate better rotary connection, the first sliding block 103 is fixedly connected with a first bearing 112, and the inner ring of the first bearing 112 is fixedly connected with the first end of the screw blade shaft 3.

[0027] In order to facilitate better rotary connection, the second sliding block 202 is fixedly connected with a second bearing 205, the inner ring of the second bearing 205 is fixedly connected with the second end of the screw blade shaft 3, and the outer ring of the second bearing 205 is fixedly connected with the connecting hole on the sidewall of the deslagging cylinder 201, so that the deslagging cylinder 201 can move up and down together with the screw blade shaft 3.

[0028] In order to facilitate the sewage through the submerged sewage pump pipe group, the lower end of the deslagging sleeve 204 is connected with a first sewage pipe group 206, the first sewage pipe group 206 is connected to the inlet of a submerged sewage pump 207, the outlet of the submerged sewage pump 207 is connected to a second sewage pipe group 208, and the outlet of the second sewage pipe group 208 is arranged outside the sewage pool.

[0029] In order to facilitate the installation and fixation of the pump group pipe group, the first sewage pipe group 206, the submerged sewage pump 207 and the second sewage pipe group 208 are fixedly connected to the second support 20.

[0030] In order to adjust the counterweight to adjust the floating height of the helical blade shaft 3 in sewage, the second slider 202 is fixedly connected with a second counterweight connecting rod 209, and the second counterweight connecting rod 209 is provided with a second counterweight 210. The upper part of the second counterweight connecting rod 209 can be connected on the second support 20 through a detachable clamp, so that the second counterweight assembly can be fixed or moved up and down after the clamp is removed.

[0031] In order to ensure that the submersible sewage pump 207 can automatically disconnect the power supply when the water level height is abnormal, and prevent cavitation, the first support 10 or the second support 20 is fixedly connected with a liquid level meter 211, and the liquid level meter 211 and the submersible sewage pump 207 are electrically connected with the controller.

[0032] The principle of the utility model:

[0033] Since the helical blade shaft 3 is a hollow structure, the first counterweight assembly, the second counterweight assembly and the slag discharge cylinder 201 can float on the water surface together, and the guide rail slider mechanism on the left and right sides of the helical blade shaft 3 can ensure that the helical blade shaft 3 moves up and down along with the height of the water surface; when the driving motor 101 is started, the driving motor 101 drives the tensioning chain wheel mechanism to rotate, thereby driving the helical blade shaft 3 to rotate, and the helical blade can make the slag on the sewage surface move towards the slag discharge cylinder 201 and gradually gather, so that the slag can fall into the slag discharge cylinder 201 and be discharged from the sewage pipe group.

[0034] When initially installed, the clamps on the first counterweight connecting rod 120 and the second counterweight connecting rod 209 are locked, so that the two groups of counterweight assemblies can be fixed on the first support 10 and the second support 20. This fixed state can be called a fixed mode, and the height of the helical blade shaft 3 can be adjusted to match the liquid level height in the sewage pool. Under the condition that the liquid level is relatively constant, the fixed mode can be used as the preferred operation mode.

[0035] When the liquid level height in the pool changes frequently, a floating mode should be used. After the equipment is installed and the water in the pool reaches the working liquid level, the clamps on the first counterweight connecting rod 120 and the second counterweight connecting rod 209 are removed, so that the helical blade shaft 3 floats on the pool surface, and the two groups of counterweight assemblies are adjusted, so that the height of the helical blade shaft 3 can match the liquid level height in the sewage pool. At this time, the system can automatically match within a certain range along with the change of the liquid level.

[0036] Compared with the helical slag skimming device appearing in the market at present, the utility model has the following characteristics:

[0037] 1. No rubber bellows and rubber hose, the height of the space occupied below the water surface is small; 2. The chain 111 is elongated and has a large size relaxation, and the automatic tensioning range is large, so that manual tensioning is not required during the service life of the chain; 3. The slag pump can be independently and conveniently lifted and lowered, and maintenance is convenient; 4. No pool side wall pre-embedded parts are required; 5. The whole is installed into the pool with an opening, the pool top is positioned, and the loading and unloading can be realized in the water state. 6. The UPE ball bearings at both ends of the spiral body ensure smooth operation under the condition of different shaft errors at both ends caused by water level fluctuation during manufacturing, installation and operation; 7. The self-contained liquid level control ensures the safe operation of the slag pump.

[0038] In the description of the present application, it should be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "bottom", "inner", "outer", "one end", "one side", "two ends", "two sides" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0039] The present application has been described above in conjunction with the drawings, and it is obvious that the specific implementation of the present application is not limited by the above manner, and various improvements using the method concept and technical solution of the present application or direct application to other occasions all fall within the protection scope of the present application.

Claims

1. A spiral skimming device comprising a first support (10), a second support (20) fixedly connected on both sides of a settling tank, characterized in that, The first support (10) is provided with a driving device (1), the second support (20) is provided with a residue discharging device (2), and the sedimentation tank is provided with a hollow structure and a spiral blade shaft (3) floating on the water surface; The driving device (1) comprises a driving motor (101) fixed on the first support (10), the rotating shaft of the driving motor (101) is connected with the first end of the spiral blade shaft (3) through a tension chain wheel mechanism, the lower part of the first support (10) is fixedly connected with a first guide rail (102) in the height direction, the first guide rail (102) is slidably connected with a first sliding block (103), and the first sliding block (103) is rotatably connected with the first end of the spiral blade shaft (3). The residue discharging device (2) comprises a funnel-shaped residue discharging cylinder (201), the side wall of the residue discharging cylinder (201) near the inlet is fixedly connected with a second sliding block (202), the lower end of the residue discharging cylinder (201) is movably connected with a residue discharging sleeve (204), and the residue discharging sleeve (204) is fixedly connected to the second support (20); the lower part of the second support (20) is fixedly connected with a second guide rail (203) in the height direction, the second guide rail (203) is slidably connected with the second sliding block (202), and the second sliding block (202) is rotatably connected with the second end of the spiral blade shaft (3).

2. The spiral skimming device according to claim 1, characterized in that The tension chain wheel mechanism comprises a driving chain wheel (104) fixedly connected to the rotating shaft of the driving motor (101), a lower deflection wheel (105) is arranged below the driving chain wheel (104), a first rotating shaft (106) is fixedly connected to the center of the lower deflection wheel (105), the first rotating shaft (106) is rotatably connected with the first support (10), a V-shaped tension swing arm (107) is further fixedly connected to the first rotating shaft (106), and an upper deflection wheel (108) and a supporting wheel (109) are rotatably connected to the two ends of the swing arm (107); the first end of the spiral blade shaft (3) is fixedly connected with a transmission chain wheel (110), and the transmission chain wheel (110), the upper deflection wheel (108), the driving chain wheel (104) and the lower deflection wheel (105) are connected through a first transmission chain (111).

3. The spiral skimming device according to claim 2, characterized in that A first counterweight connecting rod (120) is fixedly connected to the first sliding block (103), and a first counterweight (121) is arranged on the first counterweight connecting rod (120).

4. The spiral skimming device of claim 1, wherein, A first bearing (112) is fixedly connected to the first sliding block (103), and the inner ring of the first bearing (112) is fixedly connected with the first end of the spiral blade shaft (3).

5. The spiral skimming device of claim 1, wherein, A second bearing (205) is fixedly connected to the second sliding block (202), the inner ring of the second bearing (205) is fixedly connected with the second end of the spiral blade shaft (3), and the outer ring of the second bearing (205) is fixedly connected with the side wall of the residue discharging cylinder (201).

6. The spiral skimming device of claim 1, wherein, The lower end of the slag discharge sleeve (204) is connected with a first blowdown pipe group (206), the first blowdown pipe group (206) is connected to the inlet of a submersible sewage pump (207), and the outlet of the submersible sewage pump (207) is connected to a second blowdown pipe group (208).

7. The spiral skimming device of claim 6, wherein, The first blowdown pipe group (206), the submersible sewage pump (207) and the second blowdown pipe group (208) are fixedly connected to the second support (20).

8. The spiral skimming device of claim 1, wherein, A second counterweight connecting rod (209) is fixedly connected to the second sliding block (202), and a second counterweight (210) is arranged on the second counterweight connecting rod (209).

9. The spiral skimming device of claim 1, wherein, A liquid level meter (211) is fixedly connected to the first support (10) or the second support (20), and the liquid level meter (211) and the submersible sewage pump (207) are electrically connected to a controller.

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