Filter screen structure for flat screening machine

Abstract

The utility model discloses a filter screen structure for a flat screening machine. The filter screen structure comprises side plates arranged in parallel, a bottom screen frame, a first inclined screen frame, a second inclined screen frame, a back plate and a connecting keel, the bottom net rack is fixedly installed on the connecting keels, the side faces of the bottom net rack are fixedly connected with the side plates, the first inclined net rack and the second inclined net rack are both arranged on the connecting keels, and the first inclined net rack and the second inclined net rack are arranged on the two sides of the bottom net rack respectively; a sludge outlet is formed between the side plate and the first inclined net rack; filter screen layers are uniformly laid on the surfaces of the bottom net rack, the first inclined net rack and the second inclined net rack; the bottom net rack, the first inclined net rack and the second inclined net rack are driven to vibrate when the flat screening machine vibrates, sewage is thrown up and slapped, sludge is separated from part of water, and due to the fact that the viscosity of the sludge is large, the sludge is not prone to blocking meshes in the filter screen layer in the vibration process.

Description

Technical Field

[0001] The utility model relates to the field of accessories for plan sieves, and particularly relates to a filter screen structure for a plan sieve. Background Art

[0002] Plan sieves are widely used and essential in sewage treatment. For example, in aquaculture, they are used to separate fecal sewage and feed residues, and in the treatment of domestic sewage, livestock wastewater, and industrial wastewater, plan sieves are necessary. In the sewage treatment processes of all industries, filtration equipment is mainly used to filter out solid substances and suspended matters in wastewater to the greatest extent possible. However, there are some deficiencies in the existing technology equipment. For example, during the filtration process of the existing plan sieve, it is necessary to perform backwashing regularly. During the backwashing process, not only is water wasted, but also the amount of wastewater flushed out is very large, and these wastewaters need to be further treated. During the filtration process of this plan sieve, if backwashing is not carried out, the filtration holes will be blocked by stains, gradually reducing the filtration efficiency, making continuous filtration impossible, and consuming a large amount of energy at the same time. Content of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a filter screen structure for a plan sieve to solve the above problems.

[0004] To solve the above technical problems, the technical solution of the utility model is: a filter screen structure for a plan sieve, including side plates, a bottom grid, a first inclined grid, a second inclined grid, a back plate, and connecting keels arranged in parallel; a plurality of connecting keels are provided and fixedly installed between the side plates, the bottom grid is fixedly installed on the connecting keels and is fixedly connected to the side plates on the side, the first inclined grid and the second inclined grid are both arranged on the connecting keels, and the first inclined grid and the second inclined grid are respectively arranged on both sides of the bottom grid; a sludge outlet is formed between the side plate and the first inclined grid, the back plate is fixedly installed between the side plates and is fixedly installed with the second inclined grid at the bottom; filter screen layers are evenly laid on the surfaces of the bottom grid, the first inclined grid, and the second inclined grid.

[0005] Preferably, the bottom grid, the first inclined grid, and the second inclined grid are all hollow structures with a plurality of water leakage holes opened.

[0006] Preferably, the water leakage holes are square holes.

[0007] Preferably, the filter screen layers are fixedly installed on the surfaces of the bottom grid, the first inclined grid, and the second inclined grid by cold welding.

[0008] Preferably, the included angle between the first inclined grid and the bottom grid is a, and the included angle between the second inclined grid and the bottom grid is b.

[0009] Preferably, an installation frame is also fixedly installed at the top of the side plate.

[0010] Preferably, a motor base is fixedly installed at the top of the side plate.

[0011] Preferably, the side surface of the side plate is trapezoidally arranged.

[0012] Preferably, a reinforcing rod is arranged at the top of the sludge outlet.

[0013] The technical effect of the present utility model is mainly reflected in that through the cooperation of the bottom grid, the first inclined grid, the second inclined grid and the filter screen layer, when the flat screen machine vibrates, part of the water in the sewage directly passes through the filter screen layer, while the sludge and part of the water are thrown up under the vibration of the bottom grid, the first inclined grid and the second inclined grid and then strike the bottom grid, the first inclined grid and the second inclined grid, so that the sludge is separated from part of the water. And due to the fact that the viscosity of the sludge is greater than that of the water, the sludge can be fed from the first inclined grid and fall out from the sludge outlet along with the vibration and accumulation, while the water will vibrate back to the bottom grid and can only pass through the filter screen layer and be discharged, thus realizing the efficient separation of the sludge and the water. And because the bottom grid, the first inclined grid and the second inclined grid can vibrate along with the flat screen machine, the sludge is not easily blocked in the mesh holes on the filter screen layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a perspective view of the present utility model;

[0015] Figure 2 is a top view of the present utility model with the filter screen layer hidden;

[0016] Figure 3 is Figure 1 a side view of.

[0017] The reference numerals are: 1-side plate, 11-mounting rack, 12-motor base, 13-reinforcing rod, 2-bottom grid, 3-first inclined grid, 4-second inclined grid, 5-back plate, 6-connecting keel, 7-sludge outlet, 8-filter screen layer, 9-leakage hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following further details the specific embodiments of the present utility model in conjunction with the accompanying drawings, so that the technical solutions of the present utility model are easier to understand and master.

[0019] In this embodiment, it should be understood that the orientation or positional relationships indicated by the terms "middle", "upper", "lower", "top", "right side", "left end", "above", "back", "middle", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0020] In addition, in this specific embodiment, if the connection or fixing method between components is not specifically described, the connection or fixing method can be bolt fixing or pin fixing commonly used in the prior art, or pin shaft connection, etc. Therefore, it will not be elaborated in this embodiment.

[0021] The utility model provides a filter screen structure for a flat screen machine, as Figures 1-3 shown, including parallel side plates 1, a bottom grid 2, a first inclined grid 3, a second inclined grid 4, a back plate 5 and connecting keels 6; a plurality of the connecting keels 6 are provided and fixedly installed between the side plates 1, the bottom grid 2 is fixedly installed on the connecting keels 6 and is fixedly connected to the side plates 1 on the side, the first inclined grid 3 and the second inclined grid 4 are both arranged on the connecting keels 6, and the first inclined grid 3 and the second inclined grid 4 are respectively arranged on both sides of the bottom grid 2; a sludge outlet 7 is formed between the side plate 1 and the first inclined grid 3, the back plate 5 is fixedly installed between the side plates 1 and is fixedly installed with the second inclined grid 4 at the bottom; a filter screen layer 8 is evenly laid on the surfaces of the bottom grid 2, the first inclined grid 3 and the second inclined grid 4. Through the cooperation of the bottom grid 2, the first inclined grid 3, the second inclined grid 4 and the filter screen layer 8, when the flat screen machine vibrates, part of the water in the sewage directly passes through the filter screen layer 8, while the sludge and part of the water are thrown up under the vibration of the bottom grid 2, the first inclined grid 3 and the second inclined grid 4 and then strike the bottom grid 2, the first inclined grid 3 and the second inclined grid 4, so that the sludge is separated from part of the water. And due to the fact that the viscosity of the sludge is greater than that of the water, the sludge can be fed from the first inclined grid 3 and fall out from the sludge outlet 7 along with the vibration and accumulation, while the water will vibrate back to the bottom grid 2 and can only pass through the filter screen layer 8 and be discharged, thus realizing the efficient separation of the sludge and the water. And because the bottom grid 2, the first inclined grid 3 and the second inclined grid 4 can vibrate with the flat screen machine, the sludge cannot block the mesh holes on the filter screen layer 8.

[0022] Preferably, the bottom grid 2, the first inclined grid 3 and the second inclined grid 4 are all hollow structures provided with a plurality of water leakage holes 9. In this embodiment, preferably, the water leakage holes 9 are square holes. Through the hollow structures and the water leakage holes 9 on the bottom grid 2, the first inclined grid 3 and the second inclined grid 4, the filter screen layer 8 is evenly supported, reducing the possibility of the filter screen layer 8 being damaged due to too much extrusion pressure. And even if the filter screen layer 8 in the water leakage holes 9 is broken, the filter screen layer 8 on a single water leakage hole 9 can be repaired and fixed on the edge of the water leakage hole 9.

[0023] Preferably, the filter screen layer 8 is fixedly installed on the surfaces of the bottom grid frame 2, the first inclined grid frame 3, and the second inclined grid frame 4 by cold welding. Fixing the filter screen layer 8 by cold welding can effectively prevent the filter screen layer 8 from detaching from the bottom grid frame 2 and sliding.

[0024] Preferably, the included angle between the first inclined grid frame 3 and the bottom grid frame 2 is a, and the included angle between the second inclined grid frame 4 and the bottom grid frame 2 is b.

[0025] Preferably, an installation frame 11 is further fixedly installed at the top of the side plate 1 for fixedly installing the filter screen structure on the planishing sieve machine.

[0026] Preferably, a motor seat 12 is further fixedly installed at the top of the side plate 1 for installing a vibration motor.

[0027] Preferably, the side surface of the side plate 1 is trapezoidally arranged. Preferably, a reinforcing rod 13 is provided at the top of the sludge outlet 7 to improve the connection strength of the sludge outlet 7.

[0028] The technical effects of the present utility model are mainly reflected as follows: Through the cooperation of the bottom grid frame, the first inclined grid frame, the second inclined grid frame, and the filter screen layer, when the planishing sieve machine vibrates, some of the water in the sewage directly passes through the filter screen layer, while the sludge and some of the water are thrown up under the vibration of the bottom grid frame, the first inclined grid frame, and the second inclined grid frame and then strike the bottom grid frame, the first inclined grid frame, and the second inclined grid frame, so that the sludge is separated from some of the water. And due to the fact that the viscosity of the sludge is greater than that of the water, the sludge can be fed from the first inclined grid frame and fall out from the sludge outlet along with the vibration and accumulation, while the water will vibrate back to the bottom grid frame and can only pass through the filter screen layer and be discharged, thereby realizing the efficient separation of the sludge and the water. And because the bottom grid frame, the first inclined grid frame, and the second inclined grid frame can vibrate with the planishing sieve machine, the sludge is not easily blocked in the mesh holes of the filter screen layer.

[0029] Of course, the above are only typical examples of the present utility model. In addition, the present utility model can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present utility model.

Claims

1. A filter screen structure for a planishing sieve machine, characterized in that, It includes side plates, a bottom grid, a first inclined grid, a second inclined grid, a back plate and connecting keels which are arranged in parallel; several connecting keels are provided and fixedly installed between the side plates, the bottom grid is fixedly installed on the connecting keels and is fixedly connected to the side plates on the side, the first inclined grid and the second inclined grid are both arranged on the connecting keels, and the first inclined grid and the second inclined grid are respectively arranged on both sides of the bottom grid; a sludge outlet is formed between the side plate and the first inclined grid, the back plate is fixedly installed between the side plates and is fixedly installed with the second inclined grid at the bottom; filter screen layers are evenly laid on the surfaces of the bottom grid, the first inclined grid and the second inclined grid.

2. The filter screen structure for a plan sifter according to claim 1, wherein, The bottom grid, the first inclined grid and the second inclined grid are all hollow structures with several water leakage holes opened.

3. The filter screen structure for a planishing screen machine according to claim 2, wherein, The water leakage holes are square holes.

4. The filter screen structure for a plan sifter according to claim 1, wherein, The filter screen layer is fixedly installed on the surfaces of the bottom grid, the first inclined grid and the second inclined grid by cold welding.

5. The filter screen structure for a flat screen machine according to claim 1, characterized in that, The included angle between the first inclined grid and the bottom grid is a, and the included angle between the second inclined grid and the bottom grid is b.

6. The filter screen structure for a planishing screen machine according to claim 1, characterized in that, An installation frame is also fixedly installed at the top of the side plate.

7. The filter screen structure for a planishing sieve machine according to claim 1, characterized in that, A motor seat is also fixedly installed at the top of the side plate.

8. The filter screen structure for a planishing screen machine according to claim 1, characterized in that, The side surface of the side plate is trapezoidally arranged.

9. The filter screen structure for a planishing screen machine according to claim 1, characterized in that, A reinforcing rod is arranged at the top of the sludge outlet.

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