Backwash drainage structure of filter

Abstract

The utility model provides a backwashing drainage structure of a filter, and relates to the technical field of filters. Comprising a filter body, a blow-off pipe, a flow dividing pipe and a mounting cylinder, a supporting frame is arranged on the inner wall of the blow-off pipe, a bearing is arranged at the top end of the supporting frame, fan blades are arranged in the bearing in a penetrating mode, a mounting frame is arranged on the outer side of the mounting cylinder, a brush is arranged on the outer side of the mounting frame, and the brush makes contact with the inner wall of the blow-off pipe. According to the utility model, the fan blades, the brush and other components are arranged, so that water flow discharged by flushing water can push the fan blades in the blow-off pipe to rotate during backwashing drainage of the filter body, and the rotation of the fan blades can drive the brush to rotate in the blow-off pipe; the brush can be used for rotatably cleaning the inner wall of the blow-off pipe during the backwashing drainage period of the filter body, so that the residual quantity of impurities on the inner side of the blow-off pipe is reduced, and the influence on the blow-off efficiency of the filter body due to blockage or narrowing of the blow-off opening is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a drainage structure, concretely to a filter backwash drainage structure, belongs to filter technical field. BACKGROUND

[0002] The filter backwash drainage structure is a device for cleaning the filter screen inside the filter, which can keep the filtering efficiency of the filter screen and prolong its service life by changing the water flow direction to flush away the dirt and impurities on the filter screen without closing the system. The structure is usually composed of the following main parts: high-quality carbon steel cylinder: as the main structure of the filter, it provides the necessary strength and stability; stainless steel wedge-shaped filter screen: used to intercept dirt and impurities in water, remove suspended solids and particulate matter, reduce turbidity, and purify water quality; butterfly valve: controls the inflow and outflow of water, when the filter is working, the butterfly valve is in the open state, water flows into the filter from the inlet, is filtered by the filter screen, and then flows out of the outlet; and blowdown device: when the filter needs to be blown down, the butterfly valve is closed, the blowdown valve is opened, and the water flow is filtered for half a cycle, part of the water flow directly flows into the system, and the other part of the water flow flows from the outside to the inside of the filter screen and is discharged through the blowdown port, which plays a role in automatically flushing the filter screen and removing dirt and impurities. The filter backwash drainage structure is widely used in various water supply systems, industrial water systems, and industrial cooling water systems, especially in systems that need to run continuously and long-term without shutdown, which can filter out various mechanical impurities in water and ensure the safe and reliable operation of system equipment.

[0003] At present, the existing filter backwash drainage structure has the following problems in use: the dirt inside the filter needs to be discharged through the blowdown pipe, if the dirt remains inside the blowdown pipe, it may cause the blowdown port to be blocked or narrowed, which affects the efficiency of blowdown, not only affects the normal work of the filter, but also may cause the internal pressure of the filter to rise, affecting its service life. In order to remove the dirt inside the blowdown pipe, regular cleaning and maintenance are required, which increases the maintenance cost and workload, and if it is not cleaned in time, it may cause more serious blockage problems, and even the blowdown pipe needs to be replaced. Therefore, we provide a filter backwash drainage structure to solve the above problems. SUMMARY

[0004] To solve the above problems, the utility model provides a filter backwash drainage structure to solve the above problems, and the specific technical scheme is as follows:

[0005] A filter backwash drainage structure, comprising a filter body, a blowdown pipe, a shunt pipe, and a mounting cylinder, wherein the inner wall of the blowdown pipe is provided with a support frame, the top end of the support frame is provided with a bearing, the inside of the bearing is penetrated by a fan blade, the outer side of the mounting cylinder is provided with a mounting frame, the outer side of the mounting frame is provided with a brush, and the brush is in contact with the inner wall of the blowdown pipe.

[0006] Preferably, the top end of the filter body is provided with a water inlet pipe, and a water outlet pipe is throughly arranged inside one side of the filter body.

[0007] Preferably, the sewage pipe is throughly arranged inside the bottom end of the filter body, a plurality of groups of the shunt pipes are throughly arranged inside the bottom end of the shunt pipe, and the plurality of groups of the shunt pipes are throughly arranged inside the sewage pipe.

[0008] Preferably, the top end of the fan blade is provided with a threaded cylinder, a connecting shaft is screwedly arranged inside the threaded cylinder, and the mounting cylinder is sleeved outside the connecting shaft.

[0009] Preferably, a positioning bolt is screwedly arranged inside the mounting cylinder, a positioning hole is arranged inside the connecting shaft, and the positioning bolt is screwedly inserted into the inside of the positioning hole.

[0010] Preferably, the sewage pipe and the shunt pipe are both throughly provided with a valve.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1、The utility model discloses a fan blade and a brush are arranged, during backwashing and water drainage of the filter body, the water flow of the washing water can push the fan blade in the sewage pipe to rotate, the rotation of the fan blade can drive the brush to rotate in the sewage pipe, the brush can be used for rotating and cleaning the inner wall of the sewage pipe during backwashing and water drainage of the filter body, the residual amount of the impurities on the inner side of the sewage pipe is reduced, the sewage outlet is prevented from being blocked or narrowed, and the efficiency of the sewage of the filter body is affected.

[0013] 2、The utility model discloses a threaded cylinder and a positioning bolt are arranged, the connecting shaft is screwedly connected with the threaded cylinder, the connecting shaft can be assembled at the top end of the fan blade shaft body, the mounting cylinder is detachably sleeved outside the connecting shaft, the positioning bolt is screwedly arranged in the mounting cylinder and screwingly inserted into the positioning hole, and the positioning bolt can position the mounting cylinder outside the connecting shaft. DRAWINGS

[0014] Figure 1 It is an overall structure schematic view of the utility model;

[0015] Figure 2 It is an overall bottom end structure schematic view of the utility model;

[0016] Figure 3 It is a sewage pipe shearing structure schematic view of the utility model;

[0017] Figure 4 It is a brush structure schematic view of the utility model;

[0018] Figure 5 The utility model discloses a connecting shaft and installation cylinder explosion structure schematic view.

[0019] The drawings show that 1 is filter body, 2 is water inlet pipe, 3 is water outlet pipe, 4 is blow-off pipe, 5 is shunt pipe, 6 is support frame, 7 is bearing, 8 is fan blade, 9 is threaded cylinder, 10 is connecting shaft, 11 is positioning hole, 12 is installation cylinder, 13 is mounting bracket, 14 is brush, 15 is positioning bolt. Specific embodiments

[0020] The utility model will be further explained in connection with the drawings.

[0021] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , a kind of filter backwash drainage structure;

[0022] Including filter body 1, blow-off pipe 4, shunt pipe 5 and installation cylinder 12, the inner wall of blow-off pipe 4 is provided with support frame 6, the top of support frame 6 is provided with bearing 7, the inside of bearing 7 is provided with fan blade 8, the outside of installation cylinder 12 is provided with mounting bracket 13, the outside of mounting bracket 13 is provided with brush 14, and brush 14 is in contact with the inner wall of blow-off pipe 4, the top of fan blade 8 is provided with threaded cylinder 9, the inside of threaded cylinder 9 is provided with connecting shaft 10 in screw thread, installation cylinder 12 is set on the outside of connecting shaft 10, the inside of installation cylinder 12 is provided with positioning bolt 15 in screw thread, the inside of connecting shaft 10 is provided with positioning hole 11, positioning bolt 15 is inserted into the inside of positioning hole 11 in screw thread, the inside of blow-off pipe 4 and shunt pipe 5 is provided with valve in penetration.

[0023] Support frame 6 is arranged inside the blow-off pipe 4, and the support frame 6 is used to provide installation support for the fan blade 8. The shaft body of the fan blade 8 is connected with the inner wall of the bearing 7. The bearing 7 can be used to rotatably arrange the fan blade 8 inside the blow-off pipe 4. When the filter body 1 is backwashed, the water flow flowing out of the inside of the blow-off pipe 4 can push the fan blade 8 to rotate inside the blow-off pipe 4. The lower section of the connecting shaft 10 is provided with a thread, and the connecting shaft 10 is threadedly connected with the threaded cylinder 9. The connecting shaft 10 is assembled at the top end of the shaft body of the fan blade 8. The mounting cylinder 12 is movably and detachably sleeved outside the connecting shaft 10. The positioning bolt 15 is threadedly penetrated through the mounting cylinder 12 and screwingly inserted into the positioning hole 11. The positioning bolt 15 can be used to position the mounting cylinder 12 outside the connecting shaft 10. Three groups of mounting frames 13 are positioned outside the mounting cylinder 12. The brush 14 is arranged outside the mounting frame 13. The mounting frame 13 can be used to provide a suitable mounting position for the brush 14. The brush 14 can be in contact with the inner wall of the blow-off pipe 4. During backwashing of the filter body 1, the water flow of the washing water can push the fan blade 8 inside the blow-off pipe 4 to rotate. The rotation of the fan blade 8 can drive the brush 14 to rotate inside the blow-off pipe 4. The brush 14 can be used to rotate and clean the inner wall of the blow-off pipe 4 during backwashing of the filter body 1. The residual amount of impurities inside the blow-off pipe 4 is reduced, and the blow-off port is not blocked or narrowed, which affects the backwashing efficiency of the filter body 1.

[0024] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , a filter backwashing structure;

[0025] The top end of the filter body 1 is provided with the water inlet pipe 2. The inside of one side of the filter body 1 is throughly provided with the water outlet pipe 3. The inside of the bottom end of the blow-off pipe 4 is throughly provided with the filter body 1. The bottom end of the shunt pipe 5 is throughly provided with a plurality of shunt pipes 5 inside. The plurality of shunt pipes 5 are throughly arranged inside the blow-off pipe 4.

[0026] The filter body 1 is a main component of filter backwashing drainage structure, the filter body 1 can change the direction of water flow to wash away the dirt on the filter screen without closing the system, so as to maintain the filtering efficiency of the filter screen and prolong its service life, the inlet pipe 2 is the inlet of the filter body 1, the raw water directly flows into the lower half part of the filter membrane, the raw water is filtered by the ultrafiltration membrane here, the filtered water flows into the upper half part of the ultrafiltration, and finally flows to the outlet pipe 3, during the backwashing of the filter body 1, the external water source enters the inside of the filter body 1 through the outlet pipe 3 and the inlet pipe 2, under the condition that the valve in the drain pipe 4 is opened, the water source and impurities in the inside of the filter body 1 can be discharged through the drain pipe 4, the shunt pipe 5 is connected between the drain pipe 4 and the filter body 1, when the pressure in the inside of the filter body 1 is too high and is detected by the external control assembly, the filter body 1 can be relieved through the shunt pipe 5, to prevent the pressure in the inside of the filter body 1 from being too high and affecting its service life.

[0027] The electrical equipment in the application is the common electrical equipment in the prior art, and the model or internal structure of the electrical equipment will not be described too much, and the electrical equipment can be replaced by other power sources.

[0028] The technical principle of the utility model is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the utility model, and cannot be interpreted as limiting the protection scope of the utility model in any way. Based on the explanation herein, other specific embodiments of the utility model can be conceived by those skilled in the art without creative labor, and these embodiments will fall within the protection scope of the claims of the utility model.

Claims

1. A filter backwash water discharge structure comprising a filter body (1), a blowdown pipe (4), a shunt pipe (5) and a mounting cylinder (12), characterized in that: The inner wall of the drain pipe (4) is provided with a support frame (6), the top end of the support frame (6) is provided with a bearing (7), the inside of the bearing (7) is provided with a fan blade (8), the outside of the mounting cylinder (12) is provided with a mounting frame (13), the outside of the mounting frame (13) is provided with a brush (14), and the brush (14) is in contact with the inner wall of the drain pipe (4).

2. The filter backwash water drainage structure according to claim 1, characterized by: The top end of the filter body (1) is provided with a water inlet pipe (2), and the inside of one side of the filter body (1) is provided with a water outlet pipe (3).

3. The filter backwash water drainage structure according to claim 1, characterized by: The inside of the drain pipe (4) is provided through the bottom end of the filter body (1), the bottom end of the shunt pipe (5) is provided with a plurality of shunt pipes (5) inside, and the plurality of shunt pipes (5) are provided through the inside of the drain pipe (4).

4. The filter backwash water drainage structure according to claim 1, characterized by: The top end of the fan blade (8) is provided with a threaded cylinder (9), the inside of the threaded cylinder (9) is provided with a connecting shaft (10) threaded through, and the mounting cylinder (12) is sleeved on the outside of the connecting shaft (10).

5. The filter backwash water drainage structure according to claim 4, characterized by: The inside of the mounting cylinder (12) is provided with a positioning bolt (15) threaded through, the inside of the connecting shaft (10) is provided with a positioning hole (11), and the positioning bolt (15) is screwed into the inside of the positioning hole (11).

6. The filter backwash water drainage structure according to claim 1, characterized by: The inside of the drain pipe (4) and the shunt pipe (5) are provided with valves.

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