Automatic flushing device for inclined plate of efficient sedimentation tank

Abstract

The invention discloses an automatic flushing device for an inclined plate of a high-efficiency sedimentation tank. The high-efficiency sedimentation tank comprises a tank body; the inclined plate sedimentation mechanism is arranged at the upper part of the tank body; the concentration mud scraping mechanism is arranged at the lower part of the tank body; the driving mechanism is arranged above the pool body, the concentration mud scraping mechanism is in transmission connection with the driving mechanism and is driven by the driving mechanism to rotate, the driving mechanism comprises a driving motor, a reduction gearbox, a driving gear, a driven gear and a web plate, the driving gear and the driven gear are arranged in the reduction gearbox, and the web plate is used for supporting the driven gear and is in transmission connection with the concentration mud scraping mechanism through a driving shaft. The automatic flushing device comprises a driving shaft, a driving shaft and a flushing mechanism; a hollow section is arranged at the upper part of the driving shaft and extends to the lower part of the inclined plate precipitation mechanism; the backwashing air inlet pipe is connected to the upper end of the hollow section through a rotary joint; the aeration branch pipe assembly is communicated to the lower part of the hollow section, and a plurality of array type aeration heads are arranged on the aeration branch pipe assembly. The automatic flushing device for the inclined plate provided by the invention is simple in structure, and can perform comprehensive and thorough back flushing on the inclined plate area.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a high-efficiency automatic flushing device for inclined plates of a sedimentation tank. Background Art

[0002] The high-efficiency sedimentation tank is an important part of the sewage treatment plant's discharge treatment process to improve standards. It is used to add chemicals to the supernatant from the previous treatment process and precipitate it again to make the discharged water meet higher discharge standards.

[0003] The sewage from the high-efficiency sedimentation tank first passes through the reaction zone, and then flocculants and coagulants are added and fully stirred to form high-density alum flowers, and then enter the sedimentation zone. Most of the sludge in the sewage containing dense alum flowers quickly settles in the sedimentation zone, and the remaining sludge rises with the water flow and contacts the inclined plate filler on the upper part of the sedimentation tank. Because the inclined plate has a large specific surface area, the sludge in the sewage adheres to the surface after contacting the inclined plate, and slides down after accumulating to a certain mass. After a period of operation, the accumulated sludge will not slide down because the surface of the inclined plate loses its smoothness, causing the inclined plate to be blocked and affecting the water discharge effect. Therefore, the inclined plate needs to be flushed every once in a while. The current method of flushing the inclined plate is to stop the operation of the high-efficiency pool first, lower the water level in the sedimentation zone to below the inclined plate layer, and manually flush each inclined plate hole with high-pressure water on the pool surface. The disadvantages of this method are: first, it affects the normal operation of the high-efficiency pool; second, the labor intensity is high; third, the flushing is not comprehensive. Summary of the invention

[0004] In order to solve the above problems, the present invention aims to provide a high-efficiency automatic flushing device for inclined plates of sedimentation tanks, which utilizes the existing driving mechanism to drive the aeration branch pipe assembly to rotate so that the compressed air in the aeration branch pipe assembly flushes the inclined plates.

[0005] Based on the above problems, the technical solution provided by the present invention is:

[0006] An automatic flushing device for inclined plates of a high-efficiency sedimentation tank, the high-efficiency sedimentation tank comprising:

[0007] Pool body;

[0008] An inclined plate sedimentation mechanism, which is arranged at the upper part of the tank body;

[0009] A concentrated sludge scraping mechanism, which is arranged at the lower part of the tank body;

[0010] A driving mechanism is arranged above the tank body, the concentrated sludge scraping mechanism is connected to the driving mechanism and rotates under the drive of the driving mechanism, the driving mechanism includes a driving motor, a reduction box, a driving gear and a driven gear arranged in the reduction box, and a web supporting the driven gear, the driving gear is connected to the power output end of the driving motor, the web is connected to the concentrated sludge scraping mechanism through a driving shaft, and the automatic flushing device includes:

[0011] The driving shaft has a hollow section at its upper portion and the hollow section extends to the bottom of the inclined plate sedimentation mechanism;

[0012] a backwash air inlet pipe connected to the upper end of the hollow section via a rotary joint;

[0013] The aeration branch pipe assembly is connected to the lower part of the hollow section, and the aeration branch pipe assembly is provided with a plurality of burst aeration heads.

[0014] In some embodiments, the burst aeration head includes a valve seat, a valve flap hinged to an upper end of the valve seat, and a damping component disposed between the valve flap and the valve seat so that the valve flap has a tendency to fall toward the valve seat.

[0015] In some of the embodiments, a hinged seat is provided on the valve seat, and the valve flap is rotatably connected to the hinged seat via a pin shaft. The damping component is a silicone spring, one end of which is sleeved on the hinged seat and the other end abuts against the valve flap. The silicone spring makes the valve flap tend to fall toward the valve seat.

[0016] In some of the embodiments, the upper end of the valve seat is an inclined end surface, and the valve flap is hinged to one end of the inclined end surface close to the aeration branch pipe assembly.

[0017] In some of the embodiments, a hollow aeration pipe head is fixed on the aeration branch pipe assembly, and the valve seat is fixedly connected to the aeration pipe head.

[0018] In some embodiments, the aeration branch pipe assembly includes two aeration branch pipes symmetrically arranged on radial sides of the hollow section of the drive shaft, and the length of the aeration branch pipes is consistent with the radius of the tank body.

[0019] In some of the embodiments, one end of the aeration branch pipe is blocked and the other end is provided with a first connecting flange, and the outer wall of the hollow section of the drive shaft is provided with a second connecting flange fixedly connected to the first connecting flange.

[0020] In some of the embodiments, it also includes a telescopic shell covering the outer periphery of the rotary joint, the rotary flange of the rotary joint is fixedly connected to the web, and the fixed flange of the rotary joint is fixedly connected to the telescopic shell and the inlet flange of the backwashing air inlet pipe.

[0021] In some of the embodiments, a through groove extending vertically through the web is provided at the position where the web is connected to the hollow section of the drive shaft, a support flange is fixed to the upper end of the web at the periphery of the through groove, and the rotating flange is fixedly connected to the support flange.

[0022] In some of the embodiments, the telescopic housing includes a lower shell fixed to the upper end of the reduction box and an upper shell detachably connected to the lower shell.

[0023] In some of the embodiments, a plurality of support rods are connected between the aeration branch pipe assembly and the sludge thickening mechanism.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] 1. When the inclined plate sedimentation mechanism needs to be flushed, the high-efficiency sedimentation tank only needs to be shut down for a period of time, the concentrated sludge scraping mechanism and compressed air are turned on, the compressed air is introduced into the aeration branch pipe assembly and discharged through the burst aeration head to clean the inclined plate sedimentation mechanism;

[0026] 2. The aeration branch pipe assembly rotates synchronously with the concentrated sludge scraper mechanism, and the backwashing track covers the entire inclined plate area, making the cleaning comprehensive and thorough;

[0027] 3. The device is parasitic on the concentrated sludge scraping mechanism, cleverly utilizing the main body of the concentrated sludge scraping mechanism, with one machine serving two purposes, which simplifies the equipment structure and saves investment;

[0028] 4. The burst aeration head used in this device can realize burst aeration, with larger bubbles and better vibration effect on the inclined plate area;

[0029] 5. The burst aeration head structure requires the pressure of compressed air to push open the valve disc, so that the compressed air is evenly distributed to each aeration head, avoiding the uneven situation of more air release near and less air far away, and improving the backwashing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0031] Figure 1It is a structural schematic diagram of an embodiment of a high-efficiency sedimentation tank inclined plate automatic flushing device of the present invention;

[0032] Figure 2 for Figure 1 A partial enlarged view of the middle part;

[0033] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0034] Figure 4 It is a structural schematic diagram of a burst aeration head in an embodiment of the present invention;

[0035] Figure 5 Schematic diagram of the installation structure of the valve disc and the valve seat in an embodiment of the present invention;

[0036] Figure 6 for Figure 5 Schematic diagram of the AA section structure;

[0037] Figure 7 It is a schematic diagram of the structure of a reduction gearbox in an embodiment of the present invention;

[0038] in:

[0039] 1. Pool body;

[0040] 2. Inclined plate sedimentation mechanism;

[0041] 3. Sludge concentration mechanism;

[0042] 4. Drive motor;

[0043] 5. driving shaft; 5-1. hollow section; 5-1a. second connecting flange;

[0044] 6. Rotating joint; 6-1. Rotating flange; 6-2. Fixed flange;

[0045] 7. Backwash the air inlet pipe; 7-1. Inlet flange;

[0046] 8. Aeration branch pipe; 8-1. First connecting flange; 8-2. Aeration pipe head;

[0047] 9. Burst aeration head; 9-1. Valve seat; 9-1a. Articulated seat; 9-2. Valve flap; 9-2a. Limiting groove; 9-3. Pin shaft; 9-4. Damping component; 9-4a. First limiting part; 9-4b. Second limiting part;

[0048] 1O, reduction box;

[0049] 11. Belly plate;

[0050] 12. Support flange;

[0051] 13. Lower housing;

[0052] 14. Upper shell;

[0053] 15. Support rod;

[0054] 16. Driven gear;

[0055] 17. Driven wheel seat;

[0056] 18. Support;

[0057] 19. Driving gear. DETAILED DESCRIPTION

[0058] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present invention and are not limited to the scope of the present invention. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the unspecified implementation conditions are usually the conditions in conventional experiments.

[0059] like Figure 1 , which is a schematic diagram of the structure of an embodiment of the present invention, provides an automatic flushing device for the inclined plate of a high-efficiency sedimentation tank, which is used to backwash the inclined plate in the high-efficiency sedimentation tank.

[0060] The high-efficiency sedimentation tank is a common sewage treatment equipment in the prior art, including a tank body 1, an inclined plate sedimentation mechanism 2 arranged on the upper part of the tank body 1, a concentrated sludge scraping mechanism 3 arranged on the lower part of the tank body 1 and a driving mechanism arranged above the tank body 1. The concentrated sludge scraping mechanism 3 is transmission-connected to the driving mechanism and rotates under the drive of the driving mechanism. The concentrated sludge scraping mechanism 3 and the driving mechanism are prior art.

[0061] like Figure 7 As shown, the driving mechanism includes a driving motor 4, a reduction gear 10, a driving gear 19 and a driven gear arranged in the reduction gear 1O, and a web 11 fixedly connected to the driven gear 16. The web 11 is connected to the concentrated mud scraping mechanism 3 via the driving shaft 5. The driving gear 19 is connected to the power output end of the driving motor 4 and meshes with the driven gear 19. The power output by the driving motor 4 drives the concentrated mud scraping mechanism 3 to rotate after being reduced by the driven gear 16. In order to facilitate the installation of the driven gear 16, a support 18 is fixed circumferentially on the inner side of the output shaft hole of the reduction gear 1O, and a driven wheel seat 17 matched with the driven gear 16 is fixed on the circumference of the support 18. The driven gear 16 is provided with external teeth and a ball bearing is provided between the inner ring and the driven wheel seat 17. The rotation of the driving motor 4 drives the driven gear 16 to rotate around the driven wheel seat 17, thereby driving the driving shaft 5 to rotate via the web 11.

[0062] The automatic flushing device comprises the above-mentioned drive shaft 5, backwashing air inlet pipe 7 and aeration branch pipe assembly.

[0063] The upper portion of the driving shaft 5 is provided with a hollow section 5-1 and the hollow section 5-1 extends to the bottom of the inclined plate sedimentation mechanism 2. The lower portion of the driving shaft 5 can be set as a solid shaft, and the hollow section 5-1 is connected to the solid shaft via two upper and lower flanges.

[0064] like Figure 2 As shown, the backwash air inlet pipe 7 is connected to the upper end of the hollow section 5 - 1 via a rotary joint 6 and the upper end is connected to a compressed air source. A support component may be provided to support the backwash air inlet pipe 7 and the rotary joint 6 .

[0065] In order to support the backwashing air inlet pipe 7 and the rotary joint 6 and keep the reduction gearbox 10 in a sealed state, the supporting component is configured as a telescopic shell covering the outer periphery of the rotary joint 6, the rotating flange 6-1 of the rotary joint 6 is fixedly connected to the web 11, and the fixed flange 6-2 of the rotary joint 6 is fixedly connected to the telescopic shell and the inlet flange 7-1 of the backwashing air inlet pipe 7. In this way, when the concentrated sludge scraper mechanism 3 is working, compressed air is introduced, and the drive motor 4 can drive the drive shaft 5 to rotate, and at the same time drive the aeration branch pipe assembly to rotate, and the compressed air backwashes the inclined plate sedimentation mechanism 2 through the aeration branch pipe assembly.

[0066] In order to facilitate the connection between the rotating flange 6-1 and the web 11, a through groove running through the web 11 from top to bottom is provided at the position where the web 11 is connected to the hollow section 5-1 of the drive shaft 5. A support flange 12 is fixed to the upper end of the web 11 at the periphery of the through groove, and the rotating flange 6-1 is fixedly connected to the support flange 12.

[0067] The telescopic housing includes a lower housing 13 fixed to the upper end of the reduction gearbox 10 and an upper housing 14 detachably connected to the lower housing 13. The upper housing 14 is covered on the outer periphery of the lower housing 13. In this example, the upper housing 14 is detachably connected to the lower housing 13 via bolts. The upper housing 14 is provided with a plurality of positioning holes arranged at intervals in the height direction for the bolts to pass through. The upper housing 14 is fixed to the lower housing 13 by bolts through the positioning holes at different heights to accommodate the installation of rotary joints 6 of different structures.

[0068] The aeration branch pipe assembly is connected to the lower part of the hollow section 5 - 1 of the driving shaft 5 , and a plurality of burst aeration heads 9 are arranged on the aeration branch pipe assembly.

[0069] In this example, the aeration branch pipe assembly includes two aeration branch pipes 8 symmetrically arranged on both radial sides of the hollow section 5-1 of the drive shaft 5. The length of the aeration branch pipe 8 is consistent with the radius of the tank body 1. In this way, when the drive motor 4 drives the drive shaft 5 to rotate, the aeration branch pipe 8 can be driven to rotate. The rotation radius of the aeration branch pipe 8 is consistent with the radius of the tank body 1, and the inclined plate area can be fully and thoroughly backwashed.

[0070] like Figure 3As shown, one end of the aeration branch pipe 8 is blocked and the other end is provided with a first connecting flange 8-1. At the same time, a second connecting flange 5-1a fixedly connected to the first connecting flange 8-1 is provided on the outer wall of the hollow section 5-1 of the drive shaft 5, thereby achieving fixed connection and communication between the aeration branch pipe 8 and the drive shaft 5.

[0071] In order to improve the stability of the aeration branch pipe assembly structure, a plurality of support rods 15 are connected between the aeration branch pipe 8 and the concentrated mud scraping mechanism 3 .

[0072] like Figure 4 As shown, the burst aeration head 9 includes a valve seat 9-1, a valve flap 9-2 hinged to the upper end of the valve seat 9-1, and a damping component 9-4 arranged between the valve flap 9-2 and the valve seat 9-1, and the damping component 9-4 is used to make the valve flap 9-2 have a tendency to fall toward the valve seat 9-1. Figure 5 and Figure 6 As shown, a hinge seat 9-1a is provided on the valve seat 9-1, and a relief opening cooperating with the hinge seat 9-1a is provided in the middle of the valve flap 9-2. The valve flap 9-2 is rotatably connected to the hinge seat 9-1a via the pin shaft 9-3.

[0073] The damping component 9-4 adopts an annular silicone spring connected end to end, and the damping component 9-4 includes a first limiting portion 9-4a limited on the hinge seat 9-1a and a second limiting portion 9-4b limited on the valve disc 9-2, and the second limiting portion 9-4b is connected to the first limiting portion 9-4a at an acute angle. Among them, the first limiting portion 9-4a is sleeved on the hinge seat 9-1a, and the second limiting portion 9-4b abuts against the valve disc 2. The silicone spring makes the valve disc 9-2 have a tendency to fall toward the valve seat 9-1, so that the valve disc 9-2 and the valve seat 9-1 fit more closely. Therefore, only when the pressure in the burst aeration head is greater than the gravity of the valve disc 9-1 and the force of the damping component 9-4 will it be pushed open to achieve burst aeration.

[0074] In order to improve the stability of the structure, a limiting groove 9-2a is provided on the valve flap 9-2 for the second limiting portion 9-4b to be placed in.

[0075] In order to prevent the sludge dropped from the inclined plate from being deposited on the valve flap 9-3, resulting in the problem that the compressed air cannot push the valve flap 9-3 open, the upper end face of the valve seat 9-1 is set as an inclined end face, and the valve flap 9-3 is hinged at one end of the inclined end face close to the aeration branch pipe 8. In this way, when not cleaning, the valve flap 9-3 closes the aeration head by its own weight and the action of the damping component 9-4, preventing the sinking sludge and debris from falling into the aeration branch pipe 8 and clogging the aeration branch pipe 8. At the same time, the sludge deposited on the outer end of the valve flap 9-3 will also slide along the inclined surface of the valve flap 9-3, and will not cause the compressed air to be unable to push the valve flap 9-3 open.

[0076] In order to facilitate the installation of the intermittent aeration head 9, a plurality of aeration pipe heads 8-2 are provided on the aeration branch pipe 8, and the valve seat 9-1 is sleeved on the aeration pipe head 8-2 and fixedly connected to the aeration pipe head 8-2. Corresponding flange structures can be provided on the valve seat 9-1 and the aeration pipe head 8-2, and the valve seat 9-1 and the aeration pipe head 8-2 are fixedly connected by a bolt and nut assembly.

[0077] The working principle of the present invention is:

[0078] When the inclined plate needs to be cleaned, the high-efficiency sedimentation tank is suspended for a period of time, and the driving motor 4 and the compressed air are turned on. The driving motor 4 drives the driving shaft 5 to rotate, and the driving shaft 5 drives the concentrated sludge mechanism 3 and the aeration branch pipe assembly to rotate at the same time. The compressed air enters the aeration branch pipe 8 through the hollow section 5-1. When the air pressure in the aeration branch pipe 8 exceeds the dead weight of the valve flap 9-3, the valve flap 9-3 is pushed open and released instantly, forming a large bubble in the water and floating to the water surface. After the first bubble is released, the pressure in the aeration branch pipe 8 drops rapidly, and the valve flap 9-3 closes the burst aeration head 9 under the action of its own weight and the damping component 9-4. When the air pressure in the aeration branch pipe 8 exceeds the dead weight of the valve flap 9-3 again, the valve flap 9-3 is pushed open again to release the second bubble. This process makes the entire burst aeration head 9 form an isobaric state, so that the compressed air can be evenly distributed to each burst aeration head 9, and the cycle is repeated. At the same time, the aeration branch pipe 8 rotates driven by the driving shaft 5 to perform a comprehensive and thorough backwashing of the inclined plate sedimentation mechanism 2.

[0079] In summary, the automatic flushing device has a simple structure and can perform comprehensive and thorough backwashing of the inclined plate to ensure the normal operation of the high-efficiency sedimentation tank.

[0080] The above examples are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic flushing device for inclined plates of a high-efficiency sedimentation tank, the high-efficiency sedimentation tank comprising: Pool body; An inclined plate sedimentation mechanism, which is arranged at the upper part of the tank body; A concentrated sludge scraping mechanism, which is arranged at the lower part of the tank body; A driving mechanism is arranged above the tank body, the concentrated sludge scraping mechanism is connected to the driving mechanism in a transmission manner and rotates under the drive of the driving mechanism, the driving mechanism includes a driving motor, a reduction box, a driving gear and a driven gear arranged in the reduction box, and a web fixedly connected to the driven gear, the driving gear is connected to the power output end of the driving motor, and the web is connected to the concentrated sludge scraping mechanism in a transmission manner via a driving shaft, characterized in that the automatic flushing device includes: The driving shaft has a hollow section at its upper portion and the hollow section extends to the bottom of the inclined plate sedimentation mechanism; a backwash air inlet pipe connected to the upper end of the hollow section via a rotary joint; The aeration branch pipe assembly is connected to the lower part of the hollow section, and the aeration branch pipe assembly is provided with a plurality of burst aeration heads.

2. The high-efficiency automatic flushing device for inclined plates of sedimentation tanks according to claim 1 is characterized in that: The burst aeration head comprises a valve seat, a valve flap hinged to the upper end of the valve seat, and a damping component arranged between the valve flap and the valve seat so that the valve flap has a tendency to fall toward the valve seat.

3. The high-efficiency automatic flushing device for inclined plates of sedimentation tanks according to claim 2 is characterized in that: A hinge seat is provided on the valve seat, the valve flap is rotatably connected to the hinge seat via a pin shaft, and the damping component is a silicone spring, one end of the silicone spring is sleeved on the hinge seat and the other end abuts against the valve flap.

4. The high-efficiency automatic flushing device for inclined plates of sedimentation tanks according to claim 2 is characterized in that: The upper end of the valve seat is an inclined end surface, and the valve flap is hinged on one end of the inclined end surface close to the aeration branch pipe assembly.

5. The high-efficiency automatic flushing device for inclined plates of sedimentation tanks according to claim 1 is characterized in that: The aeration branch pipe assembly comprises two aeration branch pipes symmetrically arranged on both radial sides of the hollow section of the driving shaft, and the length of the aeration branch pipes is consistent with the radius of the tank body.

6. The high-efficiency automatic flushing device for inclined plates of sedimentation tanks according to claim 5 is characterized by: One end of the aeration branch pipe is blocked and the other end is provided with a first connecting flange, and the outer wall of the hollow section of the driving shaft is provided with a second connecting flange fixedly connected to the first connecting flange.

7. The high-efficiency automatic flushing device for inclined plates of sedimentation tanks according to claim 1 is characterized by: It also includes a telescopic shell covering the outer periphery of the rotary joint, the rotary flange of the rotary joint is fixedly connected to the web, and the fixed flange of the rotary joint is fixedly connected to the telescopic shell and the inlet flange of the backwashing air inlet pipe.

8. The high-efficiency automatic flushing device for inclined plates of sedimentation tanks according to claim 7 is characterized in that: A through slot is provided at the position where the web is connected to the hollow section of the drive shaft, and a support flange is fixed to the upper end of the web at the periphery of the through slot, and the rotating flange is fixedly connected to the support flange.

9. The high-efficiency automatic flushing device for inclined plates of sedimentation tanks according to claim 7 is characterized in that: The telescopic housing comprises a lower housing fixed to the upper end of the reduction box and an upper housing detachably connected to the lower housing.

10. The high-efficiency automatic flushing device for inclined plates of sedimentation tanks according to claim 1 is characterized in that: A plurality of support rods are connected between the aeration branch pipe assembly and the sludge concentration mechanism.

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