CN104258631B - Improved type backwashing-free and automatic blowdown sand filtering cylinder - Google Patents

Abstract

The invention belongs to the technical field of water treatment equipment, in particular to an improved sand filter cylinder without backwashing and automatic sewage discharge. It solves technical problems such as unreasonable design of the prior art. The tank body is equipped with a suspension filter mechanism that can float between the water outlet and the water inlet. The bottom of the tank body is equipped with a sewage collection and settlement pipe. The eddy current centrifugal mechanism deposits to the sewage settling pipe, and the discharge end of the sewage settling pipe is equipped with a sewage valve. Compared with the existing technology, the advantages of the improved sand filter cylinder without backwashing and automatic sewage discharge are: 1. The design is reasonable and the structure is simple, and the dirt in the sand filter cylinder can be cleaned without stopping the operation. 2. Easy to operate, easy to use, high degree of automation. 3. Easy maintenance and long service life. 4. Not only the filtering effect is good, but also the continuous operation of the water cycle can be guaranteed.

Description

Improved sand filter cylinder without backwashing and automatic sewage discharge

technical field

The invention belongs to the technical field of water treatment equipment, in particular to an improved sand filter cylinder without backwashing and automatic sewage discharge.

Background technique

Sand filter tanks can be used in various water purification and circulation systems such as swimming pools, water park filtration, drinking water pretreatment, and aquaculture. The original sand filter tank, after a period of use, the accumulated dirt hinders the water flow and weakens the purification ability. It is necessary to stop the operation of the sand filter tank and clean the dirt in the sand filter tank, which leads to the shutdown of the entire water circulation system. . Cleaning up the dirt in the sand filter tank is not only a waste of time, but also causes the death of fish, shrimp and other animals in the water due to the outage of the entire water circulation system, and because a large amount of water is required to clean the sand filter tank, resulting in water waste, and The concepts of recirculating aquaculture are contradictory. Therefore, there is a need for a sand filter cylinder capable of cleaning dirt while the sand filter cylinder is working without stopping the operation of the sand filter cylinder.

To this end, people have carried out long-term exploration and proposed various solutions. For example, the Chinese patent literature discloses a multi-layer sand filter tank [application number: 201220495427.X], which includes a cylinder body and a water inlet and a water production port arranged in the cylinder body. The cylinder body is sequentially arranged with Activated carbon filter layer, red flint sand filter layer, fine pomegranate sand filter layer, coarse pomegranate sand filter layer and quartz sand filter layer.

Although the above scheme can effectively remove residual chlorine, suspended solids, colloids, iron and manganese, etc. in the water, there is still the need to stop the sand filter tank when cleaning the dirt in the sand filter tank, and the water waste is serious, Time-consuming.

Contents of the invention

The object of the present invention is to solve the above problems and provide an improved sand filter tank with reasonable design and simple structure, which can clean the dirt in the sand filter tank without backwashing and automatic sewage discharge without stopping the operation.

In order to achieve the above object, the present invention adopts the following technical solutions: the improved sand filter tank with automatic sewage discharge without backwashing includes a cylinder body, the upper part of the cylinder body is provided with a water outlet, and the middle part of the cylinder body is provided with a water inlet, It is characterized in that a suspension filter mechanism capable of floating between the water outlet and the water inlet is provided in the cylinder body, a sewage collection and settlement pipe is provided at the bottom of the cylinder body, and the water inlet and sewage collection and settlement A vortex centrifugal mechanism is provided between the pipes to allow the sewage to be deposited into the sewage collection and settlement pipe through the swirling flow, and the discharge end of the sewage collection and settlement pipe is provided with a sewage valve.

In the above-mentioned improved sand filter cylinder without backwash automatic sewage discharge, the cylinder body includes a cylindrical upper box, and the lower end of the upper box is connected with a conical lower box with a large upper part and a smaller lower part. , the vortex centrifugal mechanism is arranged in the lower box, and the dirt collection and settling pipe is arranged in the bottom of the lower box.

In the above-mentioned improved sand filter tank with automatic sewage discharge without backwashing, the vortex centrifugal mechanism includes a sewage inlet pipe that is in the shape of a spiral with a large top and a small bottom, and can allow sewage to be deposited into the sewage collection and settlement pipe through the swirling flow.

In the above-mentioned improved sand filter cylinder without backwashing automatic sewage discharge, the inlet of the sewage inlet pipe is vertically upward or inclined upward, and the outlet of the sewage inlet pipe is located at the upper end of the sewage collection and settlement pipe and is vertically downward or tilt down.

In the above-mentioned improved sand filter cylinder without backwashing and automatic sewage discharge, the suspension filter mechanism includes several floating beads forming a filter layer, and the floating beads can float between the water inlet and the water outlet.

In the above-mentioned improved sand filter cylinder without backwashing and automatic sewage discharge, the central axis of the water inlet deviates from the central axis of the cylinder body, so that the water flow enters the cylinder body obliquely from the water inlet and forms a vortex.

In the aforementioned improved sand filter cylinder without backwashing and automatic sewage discharge, the direction of the vortex formed by the vortex centrifugal mechanism is the same as or opposite to that formed by the water inlet.

In the above-mentioned improved sand filter cylinder with backwash-free automatic sewage discharge, the top of the cylinder is closed; the sewage valve is an electric control valve.

In the above-mentioned improved sand filter tank with backwash-free automatic sewage discharge, the water inlet is inserted with a water inlet pipe, and the water outlet is inserted with a water outlet pipe.

In the above-mentioned improved sand filter cylinder with automatic sewage discharge without backwashing, the lower end of the sewage collection and settlement pipe is connected with a floor drain joint.

Compared with the existing technology, the advantages of the improved sand filter cylinder without backwashing and automatic sewage discharge are: 1. The design is reasonable and the structure is simple, and the dirt in the sand filter cylinder can be cleaned without stopping the operation. 2. Easy to operate, easy to use, high degree of automation. 3. Easy maintenance and long service life. 4. Not only the filtering effect is good, but also the continuous operation of the water cycle can be guaranteed.

Description of drawings

Fig. 1 is a schematic diagram of the structure provided by the present invention.

Fig. 2 is a schematic structural diagram of the state of water ingress provided by the present invention.

In the figure, the cylinder body 1, the water outlet 11, the water inlet 12, the suspension filter mechanism 2, the sewage collection and settlement pipe 3, the sewage valve 31, the eddy current centrifugal mechanism 4, the upper box body 1a, the lower box body 1b, and the sewage inlet pipe 41 , Float 21, water inlet pipe 121, water outlet pipe 111, floor drain connection 3a.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. As shown in Figures 1 and 2, the improved sand filter cylinder without backwashing and automatic sewage discharge includes a cylinder body 1, the upper part of the cylinder body 1 is provided with a water outlet 11, the top of the cylinder body 1 is closed, and the middle part of the cylinder body 1 is provided with a water inlet 12. The cylinder body 1 is equipped with a suspension filter mechanism 2 that can float between the water outlet 11 and the water inlet 12. The bottom of the cylinder body 1 is provided with a sewage collection and settlement pipe 3, and the upper end of the sewage collection and settlement pipe 3 passes through the detachable structure and the cylinder body. 1 connected, between the water inlet 12 and the sewage settling pipe 3, there is a vortex centrifugal mechanism 4 that can make the sewage flow into the sewage settling pipe 3 through the swirling flow and deposit it to the sewage settling pipe 3, and the discharge end of the sewage settling pipe 3 is provided with a sewage valve 31 .

The cylinder body 1 includes a cylindrical upper box body 1a, the lower end of the upper box body 1a is connected with the conical lower box body 1b, which is large up and down small, and the vortex centrifugal mechanism 4 is arranged in the lower box body 1b, and the sewage collection and settlement pipe 3 is arranged at the bottom of the lower box body 1b, and the upper end of the sewage collection and settling pipe 3 is connected with the lower box body 1b through a flange structure. The vortex centrifugal mechanism 4 includes a helical shape with a large top and a small bottom and can make the sewage enter the sewage through the swirling flow and deposit it into the sewage collection and settlement pipe 3. The sewage inlet pipe 41 is connected with the lower box 1b through a fixed frame, and the sewage The inlet of the sewage pipe 41 is vertically upward or inclined upward, and the outlet of the sewage inlet pipe 41 is located at the upper end of the sewage collection and settlement pipe 3 and is vertically downward or inclined downward. In order to further improve the sewage collection effect, the entrance of the sewage inlet pipe 41 is set in a bell-shaped shape. In addition, the outlet of the sewage inlet pipe 41 is set in the shape of a bell mouth, and this structure is beneficial to reduce the pressure of the discharge from the outlet of the sewage inlet pipe 41, so as to prevent the sewage in the sewage collection and settling pipe 3 from being raised again by pressure impact. The outlet of the sewage inlet pipe 41 can also be docked with the upper end of the sewage collection and settlement pipe 3 .

The suspension filter mechanism 2 includes several floating beads 21 and the floating beads 21 form a filter layer, and the floating beads 21 can float between the water inlet 12 and the water outlet 11 . As shown in FIG. 2 , the central axis of the water inlet 12 deviates from the central axis of the cylinder body 1 so that the water flow enters the cylinder body 1 obliquely from the water inlet 12 and forms a vortex. This way of water intake can make the water entering the cylinder body 1 automatically form a vortex to facilitate the sinking of dirt. The direction of the vortex formed by the vortex centrifugal mechanism 4 is the same as or opposite to the direction of the vortex formed by the water inlet 12 . The sewage valve 31 is an electric control valve, the water inlet 12 is inserted with a water inlet pipe 121, and the water outlet 11 is inserted with a water outlet pipe 111; the lower end of the sewage collection and settlement pipe 3 is connected with a floor drain connection 3a; the top of the upper box 1a is closed by a top cover, and the top The cover is connected with the upper box body 1a through a detachable structure, such as a flange structure, and a sealing ring is provided between the top cover and the upper box body 1a. The upper end of the sewage settling pipe 3 is also provided with an anti-dirt backflow assembly that can prevent the dirt from entering the sewage settling pipe 3 and flowing out from the upper end of the sewage collection settling pipe 3. The anti-dirt backflow assembly allows the water after the initial filtration to pass through. , A detector capable of detecting the amount of dirt is also provided in the dirt collecting and settling pipe 3, and the dirt collecting and settling pipe 3 is made of a transparent material.

During operation, the water containing dirt enters the cylinder body 1 through the water inlet pipe 121 and forms a vortex. The larger dirt of the particles settles down with the vortex and enters from the inlet of the vortex centrifugal mechanism 4 (i.e. the sewage inlet pipe 41) during the movement, and then is discharged from the outlet of the centrifugal mechanism 4 (i.e. the sewage inlet pipe 41), thereby It is convenient for dirt to enter the dirt collecting and settling pipe 3. The dirt with smaller particles rises and is filtered by the suspension filter mechanism 2 , and the filtered water is discharged from the water outlet 11 . During the filtration process, the dirt with smaller particles accumulates into larger dirt, settles under the action of the vortex, and enters from the inlet of the vortex centrifugal mechanism 4 (ie, the sewage inlet pipe 41) during the movement, and then flows from the centrifuge The outlet of mechanism 4 (ie the sewage inlet pipe 41) is removed, thereby facilitating the entry of dirt into the dirt collection and settlement pipe 3. Therefore, during the purification process, the dirt can be efficiently and timely collected. The sewage entering the sewage collecting and settling pipe 3 is intermittently discharged through the sewage valve 31, so as to realize the timely discharge of the sewage without shutting down and backwashing.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Although this article uses more cylinder body 1, water outlet 11, water inlet 12, suspension filter mechanism 2, sewage collection and settlement pipe 3, sewage valve 31, eddy current centrifugal mechanism 4, upper box body 1a, lower box body 1b, The sewage inlet pipe 41, the floating bead 21, the water inlet pipe 121, the water outlet pipe 111, the floor drain connecting pipe 3a and other terms, but the possibility of using other terms is not excluded. These terms are used only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any kind of additional limitation is against the spirit of the present invention.

Claims (8)

1. An improved sand filter cylinder without backwashing and automatic sewage discharge, comprising a cylinder body (1), the upper part of the cylinder body (1) is provided with a water outlet (11), and the middle part of the cylinder body (1) is provided with an inlet A water outlet (12), characterized in that the cylinder body (1) is provided with a suspension filter mechanism (2) capable of floating between the water outlet (11) and the water inlet (12), and the cylinder body (1) The bottom is provided with a sewage collection and settlement pipe (3), and a sewage collection and settlement pipe (3) is provided between the water inlet (12) and the sewage collection and settlement pipe (3) so that the sewage can be deposited into the sewage collection and settlement pipe (3) ) of the vortex centrifugal mechanism (4), the discharge end of the sewage collection and settling pipe (3) is provided with a sewage valve (31), and the vortex centrifugal mechanism (4) includes a helical shape that is large up and down small and can The sewage is deposited into the sewage inlet pipe (41) of the sewage collection and settlement pipe (3) through the swirling flow, the inlet of the sewage inlet pipe (41) is vertically upward or inclined upward, and the sewage inlet pipe The outlet of (41) is positioned at the sewage collecting and settling pipe (3) upper end and is vertically downward or inclined downward. 2. The improved sand filter cylinder without backwashing and automatic sewage discharge according to claim 1, characterized in that, the cylinder body (1) includes a cylindrical upper box (1a), and the upper box (1a) The lower end is connected with the conical lower case (1b) which is large up and down small, the vortex centrifugal mechanism (4) is arranged in the lower case (1b), and the sewage collection and settling pipe (3) Set at the bottom of the lower box (1b). 3. The improved sand filter cylinder without backwashing automatic sewage discharge according to claim 1 or 2, characterized in that, the suspension filter mechanism (2) includes several floating beads (21) and the floating beads (21) form a filter layer, the floating beads (21) can float between the water inlet (12) and the water outlet (11). 4. The improved sand filter cylinder without backwashing and automatic sewage discharge according to claim 1, characterized in that, the central axis of the water inlet (12) deviates from the central axis of the cylinder (1) so that the water flow from the water inlet (12) obliquely enters the cylinder (1) and forms a vortex. 5. The improved sand filter cylinder without backwashing and automatic sewage discharge according to claim 4, characterized in that the direction of the vortex formed by the vortex centrifugal mechanism (4) is the same as or opposite to the direction of the vortex formed by the water inlet (12). 6. The improved sand filter cylinder without backwashing automatic sewage discharge according to claim 1 or 2, characterized in that the top of the cylinder body (1) is closed; the sewage valve (31) is an electric control valve. 7. The improved sand filter cylinder without backwashing and automatic sewage discharge according to claim 1 or 2, characterized in that, the water inlet (12) is inserted with a water inlet pipe (121), and the water outlet (11) is inserted into Water outlet pipe (111) is arranged. 8. The improved sand filter cylinder without backwashing and automatic sewage discharge according to claim 1 or 2, characterized in that, the lower end of the sewage collection and settlement pipe (3) is connected with a floor drain joint (3a).