Active sand filtering equipment with anti-blocking structure

Abstract

The utility model discloses active sand filtering equipment with an anti-blocking structure, and relates to the technical field of active sand filtering equipment, the active sand filtering equipment comprises a tank body and an air lifting pipe arranged on the inner bottom side of the tank body, the outer side of the air lifting pipe is sleeved with a supporting frame, pneumatic motors are arranged at the two ends of the supporting frame, stirring blades are arranged on the upper sides of the pneumatic motors, and the stirring blades are arranged on the outer side of the tank body. A high-pressure gas pipe is arranged on the other side of the supporting frame. Through the supporting frame, the pneumatic motor, the high-pressure gas pipe and the stirring blades, high-pressure gas is conveyed to the pneumatic motor by the high-pressure gas pipe, so that the stirring blades rotate quickly to crush hardened active sand, and the active sand can flow towards the inner bottom side of the tank body; therefore, the air can be sucked into the air lifting pipe by high-speed flowing air for backwashing treatment.

Description

Technical Field

[0001] The utility model relates to the technical field of active sand filtering equipment, in particular to active sand filtering equipment with an anti-blocking structure. Background Art

[0002] The activated sand filter is a continuous filtration equipment that integrates coagulation, clarification and filtration. It removes suspended matter and other particulate impurities in the water through the interception effect of the filter layer. The filtered water can meet the effluent water quality standards after ultraviolet disinfection, and the effluent enters the discharge pool for discharge.

[0003] When the existing activated sand filtering equipment is in use, the activated sand on the bottom side of the filtering equipment is easily squeezed and compacted together after filtration, so that the activated sand is blocked on the bottom side of the tank body, so that the air lifted by the air lift pump cannot suck the activated sand into the sand washing pipe, affecting the backwashing of the activated sand. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide an activated sand filtering device with an anti-blocking structure. Through a support frame, an air motor, a high-pressure gas pipe and a stirring blade, the high-pressure gas pipe conveys high-pressure gas to the air motor, so that the stirring blade rotates rapidly to break up the compacted activated sand, thereby allowing the activated sand to flow to the bottom side of the tank body and then be sucked into the air lift pipe by high-speed flowing air for backwashing treatment, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an activated sand filtering device with an anti-blocking structure, comprising a tank body and an air lift pipe arranged on the bottom side of the tank body, a support frame is provided on the outside of the air lift pipe, pneumatic motors are provided on both ends of the support frame, stirring blades are provided on the upper side of the pneumatic motor, and a high-pressure gas pipe is provided on the other side of the support frame.

[0006] Furthermore, a water supply pipe is provided on the outer side of the upper side of the air lift pipe, a sand return pipe is provided on the outer side of the upper end of the air lift pipe, and a sand return trough is provided in the space inside the sand return pipe and outside the air lift pipe. The activated sand after backwashing flows back into the sand return trough of the sand return pipe, and finally falls down from the sand return trough onto the activated sand accumulation layer.

[0007] Furthermore, a water inlet pipe is obliquely arranged on the outer side of the upper part of the water supply pipe, a backwash cylinder is arranged on the upper side of the return sand pipe, and a confluence trough is arranged on the upper inner part of the tank body. The confluence trough can allow the filtered water to be confluent and finally the filtered water is discharged through the filter drain pipe.

[0008] Furthermore, a filtering drainage pipe is arranged on the outside of the tank body corresponding to the position of the confluence trough, a cover plate is arranged on the upper end of the tank body, and a water distributor is arranged in a ring shape on the lower end of the water supply pipe. The cover plate can seal the upper side of the tank body, and the water distributor can evenly distribute the water to be filtered inside the activated sand, so that the water can fully contact with the activated sand during the upward flow, thereby filtering the water.

[0009] Furthermore, a sand guide plate is provided at the lower side of the water distributor, a backwash wastewater pipe is connected to the lower side of the backwash cylinder, the sand guide plate is connected to the water distributor by bolts, the backwash wastewater pipe can discharge the water for backwashing active sand, and the sand guide plate can make the active sand flow to the bottom side of the tank body, so that the active sand accumulates on the outer ring side of the bottom of the tank body.

[0010] Furthermore, the support frame is connected to the pneumatic motor by bolts, and the output shaft of the pneumatic motor is keyed to the stirring blade. The pneumatic motor can drive the stirring blade to rotate under the action of high-pressure gas, so that the stirring blade can stir the accumulated active sand layer, thereby preventing the active sand from accumulating into blocks and not being sucked into the air lift pipe for backwashing.

[0011] Furthermore, the confluence trough is welded to the inner side of the tank body, and the lowest height of the inner hole of the filter drain pipe is the same as the height of the bottom side of the confluence trough. The lowest height of the inner hole of the filter drain pipe and the height of the bottom side of the confluence trough can ensure that the filtered water after confluence is discharged into the filter drain pipe in time.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the partition wall for steel structure workshop has the following advantages:

[0013] 1. The utility model uses a support frame, a pneumatic motor, a high-pressure gas pipe and a stirring blade, so that the high-pressure gas pipe transmits high-pressure gas to the pneumatic motor, so that the stirring blade rotates rapidly, and the compacted active sand is broken up, so that the active sand can flow to the bottom side of the tank body, and then can be sucked into the air lift pipe by the high-speed flowing air for backwashing treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a partial cross-sectional schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the top view of the support frame and the stirring blade in the utility model;

[0016] Figure 3 It is a schematic diagram of the main cross-sectional structure of the sand return pipe in the utility model.

[0017] In the figure: 1. tank body; 2. water inlet pipe; 3. backwash wastewater pipe; 4. water supply pipe; 5. water distributor; 6. sand guide plate; 7. air lift pipe; 8. filter drain pipe; 9. confluence trough; 10. backwash cylinder; 11. return sand pipe; 12. cover plate; 13. pneumatic motor; 14. stirring blade; 15. high-pressure gas pipe; 16. support frame; 17. return sand trough. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 This embodiment provides a technical solution: an active sand filtering device with an anti-blocking structure, comprising a tank body 1 and an air lift pipe 7 arranged on the inner bottom side of the tank body 1, a support frame 16 is sleeved on the outer side of the air lift pipe 7, pneumatic motors 13 are arranged on both ends of the support frame 16, stirring blades 14 are arranged on the upper side of the pneumatic motor 13, and a high-pressure gas pipe 15 is arranged on the other side of the support frame 16. The high-pressure gas pipe 15 can deliver high-pressure gas, so that the pneumatic motor 13 can drive the stirring blades 14 to rotate, and then the stirring blades 14 stir the compacted active sand layer, ensuring that the active sand can be quickly sucked into the air lift pipe 7, so that the active sand can be effectively backwashed.

[0020] The upper side of the air lift pipe 7 is provided with a water supply pipe 4, the upper side of the air lift pipe 7 is provided with a sand return pipe 11, and the space between the inner side of the sand return pipe 11 and the outer side of the air lift pipe 7 is provided with a sand return tank 17. The air lift pipe 7 transports the active sand, water and air upward, and the active sand collides with each other under the action of high-pressure gas, so that the pollutant layer attached to the outer layer of the active sand is separated, and the active sand is cleaned. The cleaned active sand enters the backwash cylinder 10 from the upper end of the air lift pipe 7, and the liquid level in the backwash cylinder 10 is lower than the liquid level outside the backwash cylinder 10, so that the water outside the backwash cylinder 10 can flow into the inner side of the backwash cylinder 10, and the active sand after backwashing is cleaned. The cleaned waste water is discharged through the backwash waste water pipe 3, and the cleaned active sand flows downward through the sand return tank 17, so that the active sand falls back to the inner side of the tank body 1.

[0021] The water supply pipe 4 is obliquely provided with a water inlet pipe 2 on the outer side of the upper part, the backwash tube 10 is provided on the upper side of the sand return pipe 11, and the confluence groove 9 is provided on the upper inner side of the tank body 1. The confluence groove 9 can confluence the filtered water, and the confluenced water can be discharged through the filter drain pipe 8.

[0022] A filter drain pipe 8 is arranged at the position of the confluence trough 9 on the outside of the tank body 1, a cover plate 12 is arranged at the upper end of the tank body 1, and a water distributor 5 is arranged in a circular direction at the lower end of the water supply pipe 4. The water to be filtered is transported to the position of the water distributor 5 through the water inlet pipe 2. After being processed by the water distributor 5, the water to be filtered is evenly distributed in the active sand layer, so that the active sand can effectively filter and process the water.

[0023] A sand guide plate 6 is provided at the lower side of the water distributor 5, and a backwash wastewater pipe 3 is connected to the lower side of the backwash cylinder 10. The sand guide plate 6 is connected to the water distributor 5 by bolts. The backwash wastewater pipe 3 can discharge the water for backwashing active sand in time, and the sand guide plate 6 can guide the falling active sand so that the active sand is evenly accumulated on the bottom side of the tank body 1.

[0024] The support frame 16 is connected to the air motor 13 by bolts, and the output shaft of the air motor 13 is key-connected to the stirring blade 14. The air motor 13 drives the stirring blade 14 to rotate under the action of high-pressure gas, so that the stirring blade 14 stirs the hardened active sand layer, so that the active sand can be sucked into the air lift pipe 7 by the high-pressure gas, and the lower end of the air lift pipe 7 is spaced from the center of the inner bottom side of the tank body 1. After the gas connection elbow at the lower end of the tank body 1 is extended into the inner bottom side of the tank body 1, it extends into the inner side of the air lift pipe 7, so that the air lift pump sends the high-pressure air into the inner side of the air lift pipe 7 to flow upward.

[0025] The confluence groove 9 is welded to the inner side surface of the tank body 1 , and the lowest height of the inner hole of the filter drainage pipe 8 is the same as the height of the inner bottom side of the confluence groove 9 .

[0026] The working principle of the active sand filtering device with anti-blocking structure provided by the utility model is as follows: Figure 1-Figure 3 As shown, the water to be filtered is sent to the water delivery pipe 4 and the water distributor 5 through the water inlet pipe 2. The water distributor 5 evenly distributes the water to be filtered in the active sand layer on the bottom side of the tank body 1. The water flows upward, and the active sand layer can filter the water. The filtered water flows into the confluence trough 9. The water in the confluence trough 9 can be discharged through the filter drain pipe 8. The air lift pump allows high-pressure air to suck the active sand and water into the air lift pipe 7 for upward flow. When the active sand flows rapidly in the air lift pipe 7, the high-pressure air makes The activated sands collide with each other, so that the pollutant layer wrapped on the outside of the activated sand is separated, and the activated sand is backwashed. The activated sand after backwashing flows upward into the backwash cylinder 10. The water level in the backwash cylinder 10 is lower than the water level outside the backwash cylinder 10. The water outside the backwash cylinder 10 can flow into the inside of the backwash cylinder 10 to clean the activated sand after backwashing. The cleaned wastewater is discharged through the backwash wastewater pipe 3, and the cleaned activated sand falls back to the inside of the tank body 1 through the sand return trough 17, so that the activated sand filtration process is circulated.

[0027] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An active sand filtration device with an anti-blocking structure, comprising a tank body (1) and an air lift pipe (7) arranged on the inner bottom side of the tank body (1), characterized in that: A support frame (16) is sleeved on the outside of the air lift pipe (7), pneumatic motors (13) are arranged on both ends of the support frame (16), stirring blades (14) are arranged on the upper side of the pneumatic motor (13), and a high-pressure gas pipe (15) is arranged on the other side of the support frame (16).

2. The active sand filtration device with an anti-blocking structure according to claim 1, characterized in that: A water supply pipe (4) is sleeved on the upper outer side of the air lift pipe (7), a sand return pipe (11) is arranged on the outer side of the upper end of the air lift pipe (7), and a sand return groove (17) is arranged in the space between the inner side of the sand return pipe (11) and the outer side of the air lift pipe (7).

3. The active sand filtration device with anti-blocking structure according to claim 2, characterized in that: A water inlet pipe (2) is obliquely arranged on the outer side of the upper part of the water supply pipe (4), a backwash cylinder (10) is arranged on the upper side of the sand return pipe (11), and a confluence trough (9) is arranged on the upper inner side of the tank body (1).

4. The active sand filtration device with an anti-blocking structure according to claim 3 is characterized in that: A filter drainage pipe (8) is arranged on the outside of the tank body (1) at a position corresponding to the confluence trough (9), a cover plate (12) is arranged on the upper end of the tank body (1), and a water distributor (5) is arranged in an annular manner on the lower end of the water supply pipe (4).

5. The active sand filtering device with anti-blocking structure according to claim 4 is characterized in that: A sand guide plate (6) is provided at the lower side of the water distributor (5), a backwash wastewater pipe (3) is connected to the lower side of the backwash cylinder (10), and the sand guide plate (6) is connected to the water distributor (5) by bolts.

6. The active sand filtration device with an anti-blocking structure according to claim 1, characterized in that: The support frame (16) is connected to the pneumatic motor (13) via bolts, and the output shaft of the pneumatic motor (13) is key-connected to the stirring blade (14).

7. The active sand filtering device with anti-blocking structure according to claim 4, characterized in that: The confluence groove (9) is welded to the inner side surface of the tank body (1), and the lowest height of the inner hole of the filter drainage pipe (8) is the same as the height of the inner bottom side of the confluence groove (9).

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