CN204275638U - A kind of two-way belt filtering and draining device - Google Patents

Abstract

The utility model discloses a two-way belt filter sewage device, which comprises two or more belt filters arranged parallel to each other, the belt filters form an angle with the ground; two adjacent belt filters There is a diversion baffle between the machines to form an S-shaped water flow channel. The belt filter includes a motor, a driving shaft, a driven shaft and a filter cloth conveyor belt. A high-pressure cleaning nozzle is arranged between the cloth conveyor belts, and the nozzle faces the lower filter cloth, and a dirt collecting funnel is arranged below the high-pressure cleaning nozzle. The utility model can solve the disadvantages of the traditional belt filter system such as short processing distance, low efficiency, large occupied space, easy deviation and accumulation of dirt during the transmission and rotation of the filter cloth.

Description

A two-way belt filter sewage device

technical field

The utility model belongs to the field of aquaculture circulating water treatment, in particular to a two-way superimposed belt-type filter sewage device for aquaculture circulating water particles.

Background technique

In the past 20 years, with the rapid development of China's industrial mariculture industry, the arbitrary discharge of high-density aquaculture sewage has continuously deteriorated the water environment. At the same time, the increasingly scarce underground brine resources and the increasing cost of temperature control of aquaculture water make the recycling of marine aquaculture water an inevitable trend in the development of the industry. Only about 9.1% and 17.4% of the nitrogen and phosphorus contained in the feed fed during the breeding process are assimilated by the cultured organisms, and the residual bait and biological excrement will cause serious pollution to the water body and the cultured organisms themselves. Therefore, removing the residual bait, Solid particles such as feces are the primary link in industrial circulating water treatment, and the use of physical filtration technology is the fastest and most economical method.

At present, commonly used filtration equipment includes mechanical filters, sand filters and biological filters. Among them, in actual processing engineering, mechanical filters (microfilters) are more widely used and have better filtering effects. When the traditional microfiltration machine is used in the field of aquaculture, it is mostly used in the first stage of coarse filtration in the closed cycle purification to filter out large particles of residual bait, feces, suspended algae, etc. in the water. However, the current use method and process generally have problems such as too short filtration process for particulate suspended matter in the aquaculture discharge water, low filtration efficiency, long treatment time, unstable operation of the filtration device, and incomplete solid-liquid separation.

The utility model provides an aquaculture circulating water belt filter sewage system, which can solve the problems in the prior art, such as low filtration efficiency of particulate suspended matter in the industrial aquaculture discharge water, long processing time, unstable operation of the filter device, solid Incomplete liquid separation and other problems.

Utility model content

In order to solve the problems of the technologies described above, the technical solution of the utility model is:

A two-way belt filter sewage device, including two or more belt filters arranged in parallel and intersecting, the belt filters form an angle with the ground; between two adjacent belt filters A diversion baffle, the two ends of the diversion baffle are connected to the treatment pool wall, and one end of the driving shaft of the upstream belt filter is provided with a round hole in the part below the liquid level of the diversion baffle to form an S-shaped water flow channel; The belt filter includes a motor, a driving shaft, a driven shaft and a filter cloth conveyor belt, the motor is connected to the driving shaft through a reducer, the driving shaft and the driven shaft are respectively supported by a support frame, and the support frame is fixed Inside the treatment pool; the driving shaft end of the belt filter is provided with a high-pressure cleaning nozzle between the upper and lower layers of filter cloth conveyor belts, and the nozzle faces the lower filter cloth. A dirt collecting funnel is provided below the high-pressure cleaning nozzle. The lower end of the dirty funnel is connected with an overflow pipe, the upper end of the overflow pipe is open and exceeds the height of the liquid level, and the lower end of the overflow pipe is connected with a solid sewage discharge pipe.

Further, the height of the guide baffle is 50-80cm.

Further, the water inlet of the S-shaped water flow channel is provided with a water inlet pump, and the water outlet is provided with a circulation pump, an outlet pipe and a solid sewage outlet; the circulation pump is connected to the water outlet pipe; the solid sewage outlet is connected to the solid sewage pipeline .

Further, the motor power of the belt filter is 1.2Kw, and the running speed of the filter cloth conveyor belt is 0.5-3rpm.

Further, the wheelbase of the belt filter is 2.4-2.6m, the filter cloth transmission bandwidth is 0.6-1m, and the angle formed with the ground is 25°-30°.

Further, the filter cloth has a filter hole of 60-100 mesh.

Further, the two sides of the drive shaft of the belt filter are respectively provided with pressure wheels, and the pressure wheels are close to the upper side of the upper filter cloth conveyor belt.

Further, the belt filter is also provided with a guide bed, which is close to the lower side of the upper filter cloth conveyor belt and fixedly connected to the side wall of the belt filter.

Further, the guide bed is in the shape of a fishbone, including a central main bone and two symmetrical side bones, the height of the main bone and the side bones is the same, and the angle formed by the two symmetrical side bones is in the same direction as the filter cloth conveyor belt. The direction of movement is the same; the guide bed is made of metal.

Further, the number of the side bones is 8-12 pairs, and the angle between the side bones and the main bone is 60°.

The utility model can solve the disadvantages of the traditional belt filter system such as short treatment distance, low efficiency, large space occupation, easy deviation and accumulation of dirt during the transmission and rotation of the filter cloth, and effectively improves the filtration of large particle dirt in the industrial circulating water Efficiency, thereby reducing the next repair load and shortening the circulating water purification cycle.

Description of drawings

The side view of the two-way belt filter blowdown device of the present invention of Fig. 1;

Fig. 2 is the top view of the two-way belt filter sewage device of the present invention.

Detailed ways

A kind of aquaculture circulating water two-way belt filter blowdown device, placed in the aquaculture discharge water treatment tank 1, in order to ensure the treatment effect of the sewage discharge device on the aquaculture discharge water in the treatment pond, the length and width of the treatment pond can be 5-6m, The depth is 1-1.5m, the preferred length and width are 5.5m, and the depth is 1.2m. A water inlet 11 and a water outlet 12 are arranged on the treatment pool.

The aquaculture circulating water two-way belt filter sewage device includes two or more belt filters 2-1 and 2-2 arranged in parallel and intersecting, and a diversion block is arranged between two adjacent belt filters Plate 3 is used to isolate an "S-shaped" narrow and long water flow channel from the treatment pool as shown in Figure 2. The height of the guide baffle is higher than the water surface height, and the height is 50-80cm, preferably 60cm. The two ends of the flow baffle are connected to the wall of the treatment tank, and the end of the drive shaft near the upstream belt filter is provided with a round hole below the liquid level of the flow guide baffle to facilitate the passage of water. The diameter of the round hole is 30-50cm , in order to control the speed of the water flow, the diameter of the circular hole is preferably 40cm. The upstream belt filter in the present invention refers to passing through the belt filter along the direction of water flow. As shown in FIG. 2 , the belt filter 2-1 is an upstream belt filter.

The water inlet 11 of the S-shaped water flow channel is provided with a water inlet pump 4, and the water outlet 12 is provided with a circulation pump 5, an outlet pipe 6 and a solid sewage outlet 7; the circulation pump 5 is connected with the water outlet pipe 6; the solid sewage pipeline 10 is connected with the solid sewage outlet 7. The filtered water is discharged from the outlet pipe through the circulating pump, and the filtered particulate suspended matter is collected into the sewage pipe through the sewage collecting funnel of the filter, and finally discharged from the solid sewage outlet. In the figure, two belt filters 2-1 and 2-2 are placed in a two-way crossing manner, and form an "S-shaped" narrow and long water flow channel through the diversion baffle, dividing the water treatment pool into 3 water channels, increasing the water filtration distance 2 times, while saving space.

The belt filter includes a motor 21, a drive shaft 22, a driven shaft 23 and a filter cloth conveyor belt 24. The power of the motor is 1.2Kw. The motor 21 is connected with the drive shaft 22 through a reducer 28 for adjusting the drive shaft. The rotation speed of the shaft, so as to promote the filter cloth conveyor belt to maintain a stable and suitable speed operation, the rotation speed is 0.5-3rpm. The driving shaft and the driven shaft are respectively supported by a support frame 25, and the support frame is fixed inside the processing tank. The wheelbase between the driving shaft and the driven shaft of the belt filter is 2.4-2.6m, the filter cloth transmission bandwidth is 0.6-1m, and the angle with the ground is 25°-30°, the preferred wheelbase is 2.55m , the filter cloth conveying bandwidth is 0.8m, and the angle with the ground is 27°. In order to ensure that the particulate suspended matter in the aquaculture circulating water is effectively filtered out, and at the same time ensure that the filtered water flows down through the filter holes smoothly, filter cloths with different pore sizes can be freely selected. For example, the filter holes of the filter cloth can be 60-100 mesh, Preferably it is 80 mesh.

A high-pressure cleaning nozzle 17 is arranged between the two layers of filter cloth conveyor belts at the driving shaft end of the belt filter, and the nozzle faces the lower filter cloth. A dirt collecting funnel 8 is arranged below the high-pressure cleaning nozzle, and the lower end of the dirt collecting funnel 8 is The overflow pipe 9 is connected, the upper end of the overflow pipe is open and exceeds the liquid level, and the lower end of the overflow pipe is connected to the solid sewage discharge pipe 10 . The solid particles attached to the lower filter cloth are washed by the water jetted from the high-pressure cleaning nozzle, fall into the dirt collecting funnel, and then enter the overflow pipe. After being separated by gravity sedimentation, the solid particles remain at the bottom of the overflow pipe and are finally discharged by the solid The pipe is discharged, and the upper clear water overflows through the upper mouth of the overflow pipe and enters the water flow channel. The design of the high-pressure cleaning nozzle of the present invention can reversely clean the particulate dirt on the filter cloth in time and efficiently, and keep the filter cloth clean. The dirt cleaned by the nozzles of the two belt filters is collected into the sewage pipe through their respective sewage collection funnels, and finally discharged from the solid sewage outlet.

Both sides of the drive shaft of the belt filter are respectively provided with pressure rollers 26, which are close to the upper side of the upper filter cloth conveyor belt, and the pressure rollers can generate pressure to increase the tension of the filter cloth, and Effectively holds the filter cloth in place.

The belt filter is also provided with a guide bed 27, which is close to the lower side of the upper filter cloth conveyor belt and fixedly connected with the side wall of the belt filter; bone and bilaterally symmetrical side bones, the height of the main bone and the side bone is the same, the angle between the side bone and the main bone is 60°, and the number of the side bones is 8-12 pairs, preferably 10 Yes, the direction of the included angle formed by the two symmetrical side bones is the same as the direction in which the filter cloth conveyor belt moves; the guide bed is made of metal, preferably stainless steel. The structure of the fishbone-shaped guide bed can play a role in combing the filter cloth, guiding the filter cloth to gather in the middle, and preventing the cumulative deviation of the filter cloth after long-term rotation.

The aquaculture discharge water to be treated enters the treatment tank from the water inlet, and the bottom end of the belt filter 2-1 drives the water flow to move upward, and the particulate suspended matter adheres to the surface of the filter cloth. When the filter cloth rotates to the bottom of the high-pressure cleaning nozzle, The water sprayed out by the high-pressure cleaning nozzle washes away the particulate suspended matter, falls into the sewage collection funnel, and finally is discharged from the solid sewage discharge pipe; the clean water filtered out by the filter cloth flows downward through the filter hole due to gravity, and enters the water flow channel , the power of the water inlet pump and the circulation pump can drive the water to flow along the "S-shaped" water flow channel formed by the guide baffle, and reach the bottom of the belt filter 2-2, and the belt filter 2-2 repeats the above process, The aquaculture sewage is further filtered, and finally pumped out of the treatment tank by a circulating pump. The water flow direction is shown in Figure 1 ①→⑥.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art can still understand the foregoing embodiments. Modifications are made to the technical solutions described, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed in the present invention.

Claims (10)

1. a two-way belt filtering and draining device, is characterized in that: comprise the two or more band filter that level crossing is arranged, described band filter and ground form angle; Be provided with flow apron between adjacent two band filters, the two ends of described flow apron are connected with process pool wall, arrange circular hole near the part of band filter driving shaft one end, upstream below the liquid level of flow apron, form S shape water stream channel; Described band filter comprises motor, driving shaft, driven shaft and filter cloth conveyer belt, and described motor via reducer is connected with driving shaft, and described driving shaft and driven shaft are supported by bracing frame respectively, and support frame as described above is fixed on treatment pond inside; High-pressure wash shower nozzle is provided with between the upper and lower two-layer filter cloth conveyer belt of active axle head of described band filter, shower nozzle is towards lower floor's filter cloth, the dirty funnel of collection is provided with below described high-pressure wash shower nozzle, the dirty funnel lower end of described collection connects overflow pipe, described overflow pipe upper end open, exceed liquid level, described overflow pipe lower end connects solid blow-off line.

2. a kind of two-way belt filtering and draining device according to claim 1, is characterized in that: described flow apron height is 50-80cm.

3. a kind of two-way belt filtering and draining device according to claim 1, is characterized in that: the water inlet of described S shape water stream channel is provided with intake pump, and delivery port is provided with circulating pump, outlet pipe and solid sewage draining exit; Described circulating pump is connected with outlet pipe; Described solid sewage draining exit is connected with solid blow-off line.

4. a kind of two-way belt filtering and draining device according to claim 1, is characterized in that: the power of motor of described band filter is 1.2Kw, and the running speed of described filter cloth conveyer belt is 0.5-3rpm.

5. a kind of two-way belt filtering and draining device according to claim 1, is characterized in that: the wheelbase of described band filter is 2.4-2.6m, and filter cloth transmission bandwidth is 0.6-1m, and forming angle with ground is 25 °-30 °.

6. a kind of two-way belt filtering and draining device according to claim 1, is characterized in that: the filter opening of described filter cloth is 60-100 order.

7. a kind of two-way belt filtering and draining device according to claim 1, it is characterized in that: the both sides of described band filter driving shaft are respectively equipped with pinch roller, the upper side of described pinch roller and upper strata filter cloth conveyer belt is pressed close to.

8. a kind of two-way belt filtering and draining device according to claim 1, is characterized in that: described band filter is also provided with guiding bed, and the downside of described guiding bed and upper strata filter cloth conveyer belt is pressed close to, and is fixedly connected with the sidewall of band filter.

9. a kind of two-way belt filtering and draining device according to claim 1, it is characterized in that: described guiding bed is fishbone, comprise middle main bone and monosymmetric side seam, described main bone is identical with side seam height, and the direction of the described two osteoplastic angles in symmetrical side is identical with the direction of filter cloth conveyer belt; Described guiding bed is metal material.

10. a kind of two-way belt filtering and draining device according to claim 9, is characterized in that: the quantity of described side seam is 8-12 couple, and the angle between described side seam and main bone is 60 °.