CN110052072A - Breeding wastewater waste separation equipment rotary drum Microfilter - Google Patents

Abstract

The invention relates to a rotary drum microfilter for manure separation equipment for aquaculture wastewater, which comprises a frame, a screen unit, a pressing unit, a cleaning unit and a transmission unit; the screen unit and the pressing unit are installed on the frame; The unit includes a feed pipe, a drum screen, a guide pipe and a discharge pipe; one end of the feed pipe is connected to the external waste water pipeline, and the other end extends into the inner side of the drum screen; the drum screen is composed of an inner fine filter and an outer coarse filter. The inner wall of the drum screen is provided with a guide pipe along the water flow path, and the outer side wall is provided with a discharge pipe; the cleaning unit includes a spray pipe; an automatic control valve is installed on the water inlet pipe of the spray pipe, and the water outlet end facing the outer wall of the drum screen; the transmission unit includes a reducer; the power output end of the reducer is matched and connected with one end of the drum screen. The invention has simple and reasonable structure design, high separation efficiency, good effect, high filtration and recovery efficiency, simple operation and use, convenient cleaning, wide applicable water quantity and quality, and low water consumption for backwashing.

Description

Drum microfilter for manure separation equipment for aquaculture wastewater

technical field

The invention relates to the field of rural domestic sewage treatment, in particular to a rotary drum microfilter of aquaculture wastewater separation equipment.

Background technique

In recent years, the rapid development of aquaculture has caused more and more serious environmental problems on people's daily life and health. With the implementation of new environmental protection policies, new requirements have been put forward for the treatment process and discharge standards of aquaculture wastewater.

The aquaculture wastewater contains a large amount of feces, sand, hair and other suspended particles, etc. Its SS concentration is high, and a large amount of organic matter exists in the form of solid particles. These impurities need to be removed in the pretreatment, otherwise entering the biochemical system will not only increase The load of the biochemical system will also block equipment, pipes, etc. The commonly used separation equipment in China is to use hydraulic screens such as inclined screens to cooperate with screw extruders or to use screw extruders alone to carry out separation. This kind of hydraulic screen uses the sewage to flow through the inclined screen from top to bottom to separate the solid and liquid by gravity. This method has the advantages of small filtering area of the screen and taking up space. There are problems such as large water consumption and low separation efficiency. At the same time, this hydraulic screen separator has a low degree of automation and is not easy to operate. Some manufacturers also use drum grids for solid-liquid separation. The sewage flows through the surface of the drum screen that rotates around the central axis. Due to the relative movement between the sewage and the drum, the sewage flows out from the gap between the grids, and the solid matter is trapped. on the screen surface. The screen utilization rate of this kind of separator is effectively improved, the floor space is greatly reduced, and the degree of automation is also improved. At the same time, its cleaning and maintenance are simple, but there are still too large filter apertures, high noise, low applicability, and backwashing. Water problems, etc.

SUMMARY OF THE INVENTION

In view of the problems existing in the above background technology, the present invention proposes a simple and reasonable structure design, high separation efficiency, good effect, high filtration and recovery efficiency, simple operation and use, convenient cleaning, wide applicable water quantity and quality, and backwash consumption. Drum microfilter for manure separation equipment for aquaculture wastewater with small water volume.

The present invention is achieved through the following technical solutions:

The above-mentioned manure separation equipment rotary drum microfilter for aquaculture wastewater includes a frame, a screen unit and a pressing unit; the screen unit and the pressing unit are matched and installed on the frame; the screen unit includes an inlet A material pipe, a drum screen, a guide pipe and a discharge pipe; one end of the feed pipe is connected to the external waste water pipeline, and the other end extends into the inner side of the drum screen; the drum screen is composed of an inner fine filter screen and a The screen structure is formed by assembling the outer coarse screen; the middle part of one end of the drum screen is hinged to the frame, the inner wall is matched with the guide pipe along the water flow path, and the outer side wall is matched with the outlet. material pipe;

The microfilter also includes a cleaning unit and a transmission unit; the cleaning unit includes a spray pipe; the spray pipe is located outside the drum screen, and an automatic control valve is matched on the water inlet pipe, and the water outlet Facing the outer wall of the drum screen; the transmission unit includes a reducer installed on one side of the frame; the power output end of the reducer is matched and connected with one end of the drum screen to drive the rotary Drum screen rotates.

In the rotary drum microfilter of the manure separation equipment for aquaculture wastewater, wherein: a sleeve is fixedly installed in the middle of one end of the drum screen, and a central shaft is fixedly connected to the middle of the other end; one end of the sleeve extends into the drum The inner side of the screen and the other end extend out of the drum screen in turn and are hinged with the upper part of one end of the frame through the bearing seat; the other end of the feed pipe is inserted into the drum screen through the sleeve. ; The central shaft is hinged with the upper part of the other end of the frame through a bearing seat.

The manure separation equipment for aquaculture wastewater is a rotary drum microfilter, wherein: the transmission unit further includes a main transmission sprocket, an auxiliary transmission sprocket and a chain; the power output end of the reducer is installed with the main transmission chain wheel; the auxiliary transmission sprocket is installed at one end of the drum screen and is matched and connected with the main transmission sprocket through the chain.

The manure separation equipment for aquaculture wastewater is a rotary drum microfilter, wherein: the reducer adopts a silent motor or a frequency conversion motor.

The manure separation equipment for aquaculture wastewater is a rotary drum microfilter, wherein: the pressing unit includes a pressing machine installed on the lower side of the frame; the upper end of the pressing machine is provided with a water inlet for pressing liquid, and the lower end is provided with There is a water outlet for pressing liquid; the water outlet for pressing liquid is connected with a water outlet for pressing liquid and is connected to an external reservoir through the water outlet for pressing liquid.

The drum microfilter of the manure separation equipment for aquaculture wastewater, wherein: the drum microfilter further includes a filtrate collection unit; the filtrate collection unit is installed on the frame and is matched to the screen unit The lower side; the filtrate collecting unit is in the shape of a funnel as a whole, the upper end of which is the filtrate inlet, and the lower end is the filtrate outlet; the filtrate outlet is connected to the squeezed liquid outlet tank through a pipeline.

In the rotary drum microfilter of the manure separation equipment for aquaculture wastewater, wherein: the frame includes a bracket placed on the ground and an outer shell installed on the upper part of the bracket; a sealing plate is also provided on one side of the outer shell.

The manure separation equipment for aquaculture wastewater is a rotary drum microfilter, wherein: the screen unit is matched and installed on the inner side of the housing; the spray pipe is matched and installed on the outside of the housing, and its water outlet end extends into the housing. The inner side of the casing faces the outer wall of the rotary drum screen; the automatic control valve is located on the outer lower side of the casing and adopts a normally closed solenoid valve.

The manure separation equipment rotary drum microfilter for aquaculture wastewater, wherein: the nozzles of the spray pipe are all fan-shaped high-speed sprays and the flushing pressure is ≥0.3MPa;

The manure separation equipment for aquaculture wastewater is a rotary drum microfilter, wherein: the guide pipe is of a spiral structure.

Beneficial effects:

The rotary drum microfilter of the manure separation equipment for aquaculture wastewater has the advantages of simple and reasonable structure design, high separation efficiency and good effect, smaller particle size of particles that can be retained, wide applicable water quantity and quality, low water consumption for backwashing, and simple operation and use. Convenient and easy to clean; the specific advantages are reflected in the following points:

(1) The screen unit adopts a drum screen and a guide tube, and the drum screen is a horizontal drum structure and is a screen structure assembled by an inner fine filter and an outer coarse filter. The filter screen and the outer coarse filter screen can retain smaller particle size and higher filtration accuracy. The guide pipe is arranged along the water flow path to make the residence time of the wastewater in the drum screen longer, so that the solid impurities in the filtered water flow smoothly. The diversion pipe is quickly discharged, the filtration efficiency is improved, and the processing capacity is increased; the coarse filter screen is used outside the drum screen, which can prevent the impact of high-pressure water washing on the fine filter screen, and prevent large particles of impurities from flowing into the external biochemical when the fine filter screen is abnormal. pool, good separation effect;

(2) Waste (sewage) water enters the drum screen from the feed pipe, and is evenly distributed on the inner wall of the rotating drum screen after a steady flow. Compared with the original process, the water distribution area is increased, the contact area between the water body and the screen becomes larger, the filtration area is increased, the filtration speed is increased, and the Processing capacity, due to the relative movement of waste water and the screen, the water passing rate is improved and the adhesion of the filter residue to the screen is reduced, thereby improving the filtration and recovery efficiency;

(3) The cleaning unit is composed of a spray pipe and an automatic control valve. The high-pressure water is sprayed in a fan-shaped high-speed through the nozzle of the spray pipe to dredge the screen and remove the solids attached to the inner wall of the screen. The flushing pressure is greater than or equal to 0.3MPa, and the backwash is regular. The operation (automatic setting or manual operation) reduces the water consumption for flushing and the operating water pressure is low, and the filtrate flowing out from the screen is guided by the casing to be collected into the filtrate collection unit directly below the screen unit, and then It flows away from the water outlet of the pressing liquid; installs automatic control valves, provides automatic and manual cleaning methods, improves the degree of automation, and can thoroughly clean the separator according to the operating conditions to improve the working environment;

(4) The reducer drives the drum screen of the screen unit through the chain, which reduces the friction of the equipment and is easy to maintain. Different reducers can be adopted according to the specific conditions of the site; the reducer can use a silent motor or a variable frequency motor, and the silent motor can Reduce the noise generated in the process of mechanical rotation, use variable frequency motor to adjust the rotation speed in real time according to the actual water volume of raw water and the change of solid content concentration, so that it is suitable for working conditions of different water volume and water quality conditions;

(5) The filtrate collection unit adopts a funnel-shaped design. Compared with the conventional cylindrical design, the filtrate flow rate of the filtrate collection unit is faster, which can effectively avoid the problem of fine suspended matter remaining on the inner wall of the filtrate collection unit caused by long-term use, and reduce the cleaning frequency. reduce workload.

Description of drawings

Fig. 1 is the front view of the manure separation equipment rotary drum microfilter for aquaculture wastewater of the present invention;

Fig. 2 is the top view of the manure separation equipment rotary drum microfilter for aquaculture wastewater of the present invention;

Fig. 3 is the left side view of the drum microfilter of the manure separation equipment for aquaculture wastewater according to the present invention;

Fig. 4 is the right side view of the drum microfilter of the manure separation equipment for aquaculture wastewater according to the present invention.

Detailed ways

As shown in Figures 1 to 4, the rotary drum microfilter of the manure separation equipment for aquaculture wastewater of the present invention comprises a frame 1,

Screen unit 2, transmission unit 3, cleaning unit 4, pressing unit 5 and filtrate collection unit 6.

The rack 1 includes a bracket 11 placed on the ground and a casing 12 mounted on the upper part of the bracket 11 ; a sealing plate 13 is also provided on one side of the casing 12 .

The screen unit 2 is matched and installed on the upper part of the casing 12 of the frame 1 , and includes a feed pipe 21 , a drum screen 22 , a guide pipe 23 and a discharge pipe installed on the side wall of the drum screen 22 . The feed pipe 21 is installed in the middle of one side of the casing 12 of the frame 1 , one end of which extends out of the outer casing 12 to communicate with the external waste water pipeline, and the other end extends through the middle of one side of the casing 12 and into the inner side of the drum screen 22 . The rotary drum screen 22 adopts a φ780 stainless steel sleeve screen, which matches the screen structure which is located inside the casing 12 of the frame 1 and is assembled from an inner fine filter screen and an outer coarse filter screen. A sleeve 221 is fixedly installed in the middle of one end of the drum screen 22, and a central shaft 222 is fixedly connected to the middle of the other end; It is hinged with the upper part of one end of the bracket 11 through the bearing seat; the other end of the feeding pipe 21 of the screen unit 2 extends through the sleeve 221 into the inside of the drum screen 22; Upper hinged. The inner wall of the rotary drum screen 22 is matched with a guide tube 23 along the water flow path, and the guide tube 23 is a helical structure. The drum screen 22 uses a fine filter screen inside, and the guide pipe 23 is arranged along the water flow path to improve the filtration accuracy. Because the guide pipe 23 makes the residence time of the waste water in the drum screen 22 longer, the filtration efficiency is improved, and the treatment capacity is increased. ; The use of a coarse filter screen outside the drum screen 22 can prevent the impact of high-pressure water on the fine filter screen, and at the same time prevent large particles of impurities from flowing into the external reservoir when the fine filter screen is abnormal.

The transmission unit 3 includes a reducer 31, a main transmission sprocket 32, an auxiliary transmission sprocket 33 and a chain 34; the reducer 31 is matched and installed on the lower side of one end of the bracket 11 of the frame 1, and its power output end is installed with the main transmission Sprocket 32; the auxiliary transmission sprocket 33 is installed on the other end of the sleeve 221 at one end of the drum screen 22 of the screen unit 2, and the auxiliary transmission sprocket 33 and the main transmission sprocket 32 are matched and connected by the chain 34. The reducer 31 drives the drum screen 22 of the screen unit 2 through the chain 34, which reduces equipment friction and is easy to maintain. Different reducers 31 can be adopted according to the specific conditions of the site; the reducer 31 adopts a silent motor to reduce mechanical The noise generated during the rotation improves the working environment; the reducer 31 adopts a frequency conversion motor, which can adjust the running speed according to the change of water quality in order to save energy and make it applicable to a wider range of water quality and water quality; in order to ensure the operation concentricity and equipment operation stability, the micro The raw water inlet end of the filter adopts roller bearings, and the sludge separation outlet adopts self-aligning silent bearings.

The cleaning unit 4 includes a spray pipe 41 and an automatic control valve. The spray pipe 41 is located on the outside of the drum screen 22 of the screen unit 2 and is mounted on the outside of the casing 12 of the frame 1. An automatic control valve is fitted on the water inlet pipe, and the water outlet extends into the casing 12 and is connected to the outside of the casing 12. the outer wall of the drum screen 22. The automatic control valve is located on the outer lower side of the shell 12 of the frame 1 and uses a normally closed solenoid valve; when the automatic control valve is energized, the coil is pulled in and tap water is sprayed out. cleaning. The spray pipe 41 used in the cleaning unit 4 sprays high-pressure water in a fan-shaped high-speed through the nozzle of the spray pipe 41 to dredge the screen and remove the solids attached to the inner wall of the drum screen 22. The flushing pressure is ≥ 0.3MPa, and the backwash is operated regularly. (automatic control setting or manual manual operation), reducing the water consumption for flushing and low operating water pressure; installing automatic control valves, providing two cleaning methods, automatic and manual, to improve the degree of automation, and the drum screen 22 can be cleaned according to the operating conditions. Thorough cleaning to improve filtration.

The pressing unit 5 is matched and installed on the lower side of the bracket 12 of the frame 1, and includes a pressing machine 51; the pressing machine 51 is matched and installed on the lower side of the bracket 12, and the upper end is provided with a pressing liquid inlet 511, and the lower end is provided with a pressing liquid outlet The water outlet 512; the pressed liquid water outlet 512 is connected with the pressed liquid water outlet 513 and connected to the external reservoir through the pressed liquid water outlet 513; the pressed residue outlet is connected to the collection hopper and transported out manually or mechanically.

The filtrate collection unit 6 is matched and installed on the bracket 12 of the frame 1 located on the lower side of the screen unit 2. The whole is in the shape of a funnel, the upper end is the filtrate inlet 61, and the lower end is the filtrate outlet 62; wherein, the filtrate collection unit 6 has a The filtrate outlet 62 is connected to the pressing liquor outlet tank 513 of the pressing unit 5 . The filtrate collection unit 6 adopts a funnel-shaped design. Compared with the conventional cylindrical design, the flow rate of the filtrate is faster, which can effectively avoid the problem of fine suspended matter remaining on the inner wall of the filtrate collection unit 6 caused by long-term use, reducing the frequency of cleaning and less work. quantity.

The working process of the rotary drum microfilter of the manure separation equipment for aquaculture wastewater of the present invention is as follows:

The external transmission device is activated, and the mud pump introduces the sewage into the microfiltration machine. After the sewage enters the microfiltration machine, the sewage and the particles whose particle size is smaller than the screen aperture pass through the fine screen and coarse screen of the rotary drum screen 22 and flow into the filtrate collection unit. 6. Impurities with a particle size larger than the screen aperture rotate with the microfilter and move with the guide pipe 23 to the pressing liquid inlet 511 of the pressing unit 5. When the solid residue remaining on the screen surface of the rotary drum screen 22 is removed by the pressing liquid When the water inlet 511 enters the pressing unit 5, the slag pressing unit 5 is activated, the pressing liquid flows into the next cell with the filtrate, and the solid residue falls into the collection hopper from the pressing liquid outlet 512 of the pressing machine and is transported manually (or mechanically); When the solid residue on the screen surface of the drum screen 22 is too much to affect the operation, it is necessary to clean the screen of the drum screen 22. At this time, the automatic control valve can be opened automatically or manually, and the high-pressure water flows to the drum screen from the outside to the inside. 22 screen is cleaned, and at the same time, the drum screen 22 screen is running normally, and the internal impurities are discharged.

The invention has simple and reasonable structure design, high separation efficiency, good effect, high filtration and recovery efficiency, simple operation and use, convenient cleaning, wide applicable water quantity and quality, and low water consumption for backwashing.

Claims (10)

1. a fecal waste separation equipment rotary drum microfilter for breeding wastewater, comprising a frame, a screen unit and a pressing unit; the screen unit and the pressing unit are matched and installed on the frame; it is characterized in that: all The screen unit includes a feed pipe, a drum screen, a guide pipe and a discharge pipe; one end of the feed pipe is connected to an external waste water pipeline, and the other end extends into the inner side of the drum screen; the drum screen is composed of A screen structure assembled from an inner fine filter and an outer coarse filter; one end of the drum screen is hinged to the frame in the middle, the inner wall is matched with the guide pipe along the water flow path, and the outer wall is matching with the discharge pipe; The microfilter also includes a cleaning unit and a transmission unit; the cleaning unit includes a spray pipe; the spray pipe is located outside the drum screen, and an automatic control valve is matched on the water inlet pipe, and the water outlet Facing the outer wall of the drum screen; the transmission unit includes a reducer installed on one side of the frame; the power output end of the reducer is matched and connected with one end of the drum screen to drive the rotary Drum screen rotates. 2. The manure separation equipment rotary drum microfilter for aquaculture wastewater as claimed in claim 1, characterized in that: the middle part of one end of the rotary drum screen is fixedly installed with a sleeve, and the middle part of the other end is fixedly connected with a central shaft; One end of the sleeve extends into the inner side of the drum screen, and the other end extends out of the outer side of the drum screen in turn and is hinged with the upper part of one end of the frame through a bearing seat; the other end of the feed pipe is passed through the sleeve The drum extends into the inside of the drum screen; the central shaft is hinged with the upper part of the other end of the frame through a bearing seat. 3. The manure separation equipment rotary drum microfilter for aquaculture wastewater as claimed in claim 1, wherein the transmission unit also comprises a main transmission sprocket, a secondary transmission sprocket and a chain; the power of the reducer The main transmission sprocket is installed at the output end; the auxiliary transmission sprocket is installed at one end of the drum screen and is matched and connected with the main transmission sprocket through the chain. 4. The manure separation equipment rotary drum microfilter for aquaculture wastewater according to claim 1 or 3, characterized in that: the reducer adopts a silent motor or a frequency conversion motor. 5. The manure separation equipment rotary drum microfilter for aquaculture wastewater according to claim 1, wherein the pressing unit comprises a pressing machine matched to be installed on the lower side of the frame; the upper end of the pressing machine A pressing liquid water inlet is provided, and a pressing liquid water outlet is arranged at the lower end; the pressing liquid water outlet is connected with a pressing liquid water outlet and is connected to an external reservoir through the pressing liquid water outlet. 6. The manure separation equipment rotary drum microfilter for aquaculture wastewater as claimed in claim 5, characterized in that: the rotary drum microfilter further comprises a filtrate collection unit; the filtrate collection unit is installed on the rack The filtrate collecting unit is in the shape of a funnel as a whole, the upper end is the filtrate inlet, and the lower end is the filtrate outlet; the filtrate outlet is connected to the squeezed liquid outlet tank through a pipeline. 7. The manure separation equipment rotary drum microfilter for aquaculture wastewater according to claim 1, characterized in that: the rack comprises a bracket placed on the ground and an outer shell installed on the upper part of the bracket; A cover plate is also provided on the side. 8. The manure separation equipment rotary drum microfilter for aquaculture wastewater according to claim 7, characterized in that: the screen mesh unit is matched and installed on the inside of the housing; the spray pipe is matched and installed on the housing The water outlet end extends into the inner side of the casing and faces the outer wall of the drum screen; the automatic control valve is located on the outer lower side of the casing and adopts a normally closed solenoid valve. 9. The manure separation equipment rotary drum microfilter for aquaculture wastewater according to claim 1 or 8, wherein the nozzles of the spray pipe are all fan-shaped high-speed jets and the flushing pressure is greater than or equal to 0.3Mpa. 10 . The manure separation equipment rotary drum microfilter for aquaculture wastewater according to claim 1 , wherein the guide pipe is of a spiral structure. 11 .