TW202317246A - Automatic loop backwashing device including a bucket, a filter unit, a control unit, a three-way pipe and a three-way discharge pipe - Google Patents

Abstract

A backwashing device includes a bucket having an inner bucket space; a filter unit arranged outside a clean water pipe, wherein the filter unit and the clean water pipe are installed together in the inner bucket space; a control unit alternately activating a main pump and an auxiliary pump according to a preset value; a three-way pipe with one-way flow control connected to the inner bucket space of the bucket and the main pump respectively; and a three-way discharge pipe respectively connected to a container, the auxiliary pump and the clean water pipe. A switching valve of the discharge pipe is operated by the control unit. When filtering, the main pump introduces a liquid to be filtered, which turns to the inner bucket space through the three-way pipe, passes through the filter unit to become a clean liquid, and flows into the clean water pipe to be stored in the container along the discharge pipe. When cleaning, the clean liquid is drawn by the auxiliary pump to become a cleaning liquid, which reversely flows into the clean water pipe through the discharge pipe, scours the filter unit, falls into the inner bucket space, turns to the three-way pipe and leaves the bucket.

Description

Automatic loop backwashing device

The invention relates to wastewater treatment technology, in particular to a backwashing device, which has dual effects of filtering and backwashing in the same loop through the design of automatic control.

In the field of wastewater treatment, animals raised in livestock farms are commonly used to produce edible agricultural products such as meat, eggs and milk, and excrete organic waste such as feces and urine. The livestock farm adopts a three-stage wastewater treatment method. After the waste and urine are treated, they return to the farmland for reuse to avoid environmental pollution.

Known waste water treatment modes, such as Taiwan Patent No. I291457 discloses a water treatment device, a water filter unit is arranged on the outside of a water production pipe, and the two are installed together in a sealed container. The water filtration unit is composed of an array of filter membranes and rotating plates alternately stacked, and the filter membranes are used to remove dirt, so that the sewage becomes filtered water and flows into the water production pipe.

However, dirt attached to the filter membrane will hinder the passage of water and reduce the filtering effect of the filter membrane to remove dirt. Therefore, a plurality of water spray pipes are added inside the sealed container, and a slit is cut longitudinally on the pipe wall of each water spray pipe, and a high-pressure water column is sprayed from the slit, driving a vane of the rotating plate to contact the surface of the filter membrane in an attempt to Remove dirt attached to the surface of the filter membrane.

However, the shock wave of the water column pushes the dirt to the filter membrane, which in turn strengthens the force of the dirt sticking to the filter membrane, and only spreads the area where the dirt sticks to the filter membrane. Even if the vane sweeps the surface of the filter membrane, it cannot effectively push the dirt away from the filter membrane. Even, the dirt is rolled to block the pores of the filter membrane.

Therefore, how to improve the drawbacks of the prior art that it is not easy to clean has become an urgent problem to be solved in the present invention.

In view of this, the inventor of this case proposes an automatic loop backwashing device, the main purpose of which is: by means of the design of automatic control, the dual effects of filtering and backwashing can be achieved in the same loop, and the method different from the conventional technology can be used to effectively Improve the disadvantages of washing away the dirt from the filter material, and achieve the functions of saving time and labor.

Due to the achievement of the above purpose, the backwashing device of the present invention includes: a bucket has a space inside the bucket; a filter unit is arranged on the outside of a clean water pipe and is jointly installed in the inside space of the bucket; a control unit A main pump and an auxiliary pump are alternately activated according to preset values; a three-way pipe with one-way flow control is connected to the barrel inner space of the barrel and the main pump; and, a three-way discharge pipe is connected to a The container, the auxiliary pump and the clean water pipe, a switching valve of the discharge pipe are operated by a control unit.

After starting the main pump, the main pump introduces the liquid to be filtered, turns to the inner space of the bucket through the three-way pipe, passes through the filter unit to become clean liquid and flows into the clean water pipe, and is stored in the container along the discharge pipe.

During reverse cleaning, the main pump is stopped, and the auxiliary pump is started. The clean liquid is sucked by the auxiliary pump to become the cleaning liquid, which flows into the clean water pipe in the reverse direction through the discharge pipe, flushes the filter unit and falls into the inner space of the barrel, and turns to the three-way Tube and out of barrel.

In this way, under the automatic control, the backwashing device of the present invention has dual effects of filtering and reverse cleaning in the same circuit, and adopts a method different from the conventional technology, which can effectively improve the disadvantages of washing away the dirt from the filter material, and save time. , labor-saving and other functions.

In order to make the purpose, features and advantages of the present invention easy to understand, one or more preferred embodiments will be described in detail as follows in conjunction with the accompanying drawings.

Next, in conjunction with the accompanying drawings, describe the embodiment of this case. In the drawings, the same or similar structures or units are denoted by the same reference numerals. It is foreseeable that the described embodiments are only some examples of this case, not all embodiments. Other embodiments that can be deduced based on the examples described above, or structures that can be modified or changed as needed, all belong to the scope of protection of this case.

In the following descriptions, directional terms such as "upper", "lower", "left", "right", "front", "rear", "inner", "outer" and "side" refer only to the directions of the drawings . The use of directional terms is for better and clearer description and understanding of this case, and does not express or imply that the devices or components described must have a specific orientation, structure and operation, so it cannot be understood as a limitation on the technical content of this case.

In the following descriptions, "mounted", "connected", "connected" or "set on" should be interpreted in a broad sense, such as fixed connection, detachable connection, integral connection, mechanical connection, unless there are specific and clear specifications and limitations , directly connected, indirectly connected, or internally connected between two elements. Those skilled in the field of this case can understand the specific meanings of the above terms in each embodiment and even this case by virtue of common knowledge or experience.

Unless otherwise specified, in the following description, "plurality" means two or more.

FIG. 1 is a schematic plan view showing a preferred embodiment of a backwashing device. A barrel 10 , a main pump 30 and an auxiliary pump 40 are connected together through a pipeline 20 . The main pump 30 and the auxiliary pump 40 are electrically connected to a control unit 12, and the control unit 12 activates the main pump 30 or the auxiliary pump 40, so that the backwashing device automatically performs a filtering operation or a backwashing procedure according to a preset value.

A tripod 15 is fixed outside the sealed bottom 14 of the bucket 10, and the tripod 15 helps the bucket 10 stand on a support surface stably, such as the ground. A cover 11 is combined with the top of the barrel 10 to seal a filter unit 16 and a clean water pipe 21 in the inner space of the barrel 10 . The pressure value of the space 17 in the barrel can be read through a pressure gauge 13 arranged on the cover 11 .

In some embodiments, the bucket 10 lying horizontally is also within the allowable scope of the present invention.

In addition, the filter unit 16 is arranged outside the water purification pipe 21 and has a filtering effect on the liquid flowing into the water purification pipe 21 . As for the structure of the filter unit 16 and the connection relationship of the water purification pipe 21, an application has been filed separately, so details will not be repeated.

The pipeline 20 includes: a discharge pipe 22 and a tee pipe 24 . The discharge pipe 22 is a trifurcated pipe body. One end of the trifurcated pipe body is connected to the bottom 14 of the bucket 10 and communicates with the clean water pipe 21. The other two ends are respectively connected to the auxiliary pump 40 and a container (not labeled). . Described tee pipe 24 is made up of two connecting pipes 25,27 and a manifold 26, and this manifold 26 one end is connected to a sedimentation tank (not shown), and the other end is connected to two connecting pipes 25,27. meeting place. One of the connecting pipes 25 is connected to the tub inner space 17 of the tub 10 , and the other connecting pipe 27 is connected to an input port 31 via an output port 32 of the main pump 30 .

As shown in Figures 2 and 3, in this embodiment, the manifold 26 and the connecting pipe 27 form an angle 42, the angle 42 is an acute angle, and forms a complementary angle with an obtuse angle. This obtuse angle exists between the manifold 26 and the further connecting pipe 25 .

Described three-way pipe 24 also has two one-way valves 28,29 and a Venturi tube 33. The one-way valve 28 is composed of a ball 281 and a frame 282. The frame 282 is a ring, and the ring is embedded in the wall of the connecting pipe 27. By means of a plurality of shrapnels (unlabeled) inside the ring, ), it is normal to push the ball 281 to block the connecting pipe 27. Similarly, another one-way valve 29 also has a ball 291 and a frame 292 . The difference is that the frame 292 is embedded in the pipe wall of the manifold 26 , and the ball 291 is pushed by the shrapnel to block the manifold 26 . The venturi tube 33 is embedded in the pipe wall of the three-way pipe 24, just between the connecting pipe 25 and the two one-way valves 28,29.

From Figures 1 and 2, the control unit 12 activates the main pump 30 by using a preset value of time or flow, and introduces high-pressure liquid, such as unfiltered water, from the input port 31 . The liquid to be filtered 41 flows to the connecting pipe 27 through the output port 32, impacts the ball 281 and pushes away the shrapnel of the frame 282, so that the one-way valve 28 remains unblocked. Because the direction in which the one-way valve 29 is installed in the manifold 26 is different from the direction in which the one-way valve 28 is assembled with the connecting pipe 27, the liquid to be filtered 41 flows through the Venturi tube 33 with a narrower diameter, which will produce a Venturi effect (also called Venturi Effect), through the connecting pipe 25 with a wider diameter and then turn to the inner space 17 of the barrel. Along the direction of the arrow in FIG. 1 , the filter unit 16 removes dirt from the liquid to be filtered 41 , such as sand, stones, feces, and the like. Under the guidance of the clean water pipe 21, the clean liquid 44 leaves the barrel 10 through the discharge pipe 22 and flows into the container below.

The Venturi effect referred to here refers to that the liquid to be filtered 41 flows in the three-way pipe 24, and the Venturi pipe 33 is the narrowest part of the three-way pipe 24, so the flow velocity at this place is the fastest and the static pressure is relatively small. Therefore, a pressure difference is generated to provide an external suction force to the fluid in the manifold 26, and the suction ball 291 closely contacts the pipe wall to keep the one-way valve 29 closed.

If the first preset value is satisfied, the control unit 12 turns off the main pump 30 and stops the filtering operation. The first preset value, for example: filter for 4 hours, the rising liquid level of the container touches a total amount controller (not shown in the figure) and so on.

As shown in Figures 4 and 5, the control unit 12 operates a switching valve 23 of the outlet pipe 22 so that no more clean liquid 44 is fed into the container. At the same time, the control unit 12 starts the auxiliary pump 40 to perform the cleaning operation.

During cleaning, the auxiliary pump 40 pumps clean liquid 44 while outputting high-pressure cleaning liquid 43 . According to the direction of the arrow in Fig. 4, the cleaning liquid 43 flows into the water purification pipe 21 in reverse through the discharge pipe 22, and sprays out of the outside of the filter unit 16, so that the dirt leaves the filter unit 16 and falls to the bottom 14 of the bucket 10. When the pressure of the space 17 in the bucket is higher than the pressure of the tee pipe 24, the cleaning liquid 43 together with the dirt flows into the connecting pipe 25, and is discharged to the sedimentation tank (not shown) through the manifold 26.

Inside the three-way pipe 24, because the ball 281 is impacted by the cleaning liquid 43 and clings to the pipe wall, the connecting pipe 27 is closed, so that the cleaning liquid 43 turns to the manifold 26 and pushes away the ball 291, allowing the one-way valve 29 to maintain Unblocked state, so two one-way valves 28,29 help the three-way pipe 24 to control the flow direction.

If the second preset value is satisfied, the control unit 12 will turn off the auxiliary pump 40 to end the reverse cleaning operation, and automatically turn on the main pump 30 to perform the next filtration circulation operation. The second preset value mentioned above, for example: cleaning for 30 minutes, the rising liquid level of the sedimentation tank touches a height sensor (not shown in the figure), etc.

After secondary sedimentation or partial removal of waste water from the sedimentation tank, it becomes liquid to be filtered, which can be drawn by the input end 31 of the main pump 30 and flow to the bucket 10 through the output end 32, which is in line with the environmental protection concept of reuse.

Those skilled in the art can understand and make changes to the above-disclosed embodiments without departing from the broad concepts of the present disclosure. Therefore, this case is not limited to the specific embodiments disclosed in the specification, and all modifications made according to the spirit and technical scope of this case shall be covered and protected by the textual content defined in the scope of the patent application.

10: Barrel 11: cover 12: Control unit 13: Pressure gauge 14: Bottom 15: tripod 16: Filter unit 17: Barrel space 20: pipeline 21: clean water pipe 22: discharge pipe 23: Switching valve 24: Tee pipe 25, 27: connecting pipe 26: Manifold 28, 29: check valve 30: Main pump 31: input terminal 32: output terminal 33: Venturi tube 40: Auxiliary pump 41: liquid to be filtered 42: Angle 43: cleaning liquid 44: clean liquid 281, 291: ball 282, 292: frame

Figure 1 is the filtering state of the preferred embodiment of the present invention. Figure 2 draws the use state of the three-way pipe guiding the liquid to be filtered. Figure 3 shows the planar check valve from the perspective of the rack, with the balls represented by dashed lines. Fig. 4 is the backwash state of the preferred embodiment of the present invention. Fig. 5 shows the use state of the three-way pipe guiding the cleaning liquid.

10: Barrel

11: cover

12: Control unit

13: Pressure gauge

14: Bottom

15: tripod

16: Filter unit

17: Barrel space

20: pipeline

21: clean water pipe

22: discharge pipe

23: Switching valve

24: Tee pipe

25, 27: connecting pipe

26: Manifold

30: Main pump

31: input terminal

32: output terminal

40: Auxiliary pump

43: cleaning liquid

44: clean liquid

Claims (5)

An automatic loop backwashing device, comprising: A bucket (10) has a bucket inner space (17); A filter unit (16) is arranged on the outside of a clean water pipe (21), and is installed together in the bucket inner space (17) of the bucket (10); A control unit (12) interactively starts a main pump (30) and an auxiliary pump (40) according to preset values; A three-way pipe (24) with one-way flow control is connected to the barrel space (17) of the barrel (10) and the main pump (30); and A three-way discharge pipe (22) is respectively connected to a container, the auxiliary pump (40) and the water purification pipe (21), and a switching valve (23) of the discharge pipe (22) is operated by the control unit (12) ; When the main pump (30) starts, the main pump (30) introduces the liquid to be filtered (41), turns to the inner space of the barrel (17) through the three-way pipe (24), and becomes clean liquid (44) through the filter unit (16). And flow into the clean water pipe (21), and store in the container along the discharge pipe (22); When the auxiliary pump (40) starts, the clean liquid (44) is sucked by the auxiliary pump (40) to become the cleaning liquid (43), which flows into the water purification pipe (21) in reverse through the discharge pipe (22), and flushes the filter unit (16 ) and fall into the bucket inner space (17), turn to the three-way pipe (24) and leave the bucket (10). The automatic circuit backwashing device as described in claim item 1, wherein two check valves (28, 29) are installed in the three-way pipe (24), and one of the check valves (28) allows the liquid to be filtered (41 ) flows into the tee pipe (24), and another one-way valve (29) allows the cleaning liquid (43) to flow out of the tee pipe (24). The automatic circuit backwashing device as described in claim 2, wherein each one-way valve (28, 29) includes: a ball (281, 291) blocking the pipe wall of the three-way pipe (24); a frame (282 , 292) are installed on the pipe wall and provide the required force for the ball (281, 291) to block the tee (24). The automatic loop backwashing device as described in Claim 1, wherein a Venturi tube (33) is installed in the tee pipe (24). The automatic circuit backwashing device as described in claim item 1, wherein the tee pipe (24) includes: A connecting pipe (25) is connected to the bucket inner space (17) of the bucket (10); Another connecting pipe (27) is connected to the main pump (30); A manifold (26) is connected at one end to where the two connecting pipes (25, 27) gather and at the other end to a settling tank.

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