Device for removing impurities from filtrate at bottom of kitchen garbage bin

Abstract

A kitchen waste bin bottom filtrate impurity removal device comprises a feeding box (1), a rotary grillage machine (2) and a residue collecting box (3), a sewage draining opening is formed in the bottom of the feeding box (1), a water draining opening (4) is formed in the position, close to the sewage draining opening, of the feeding box (1), a spiral conveyor (5) communicated with the residue collecting box (3) is arranged on the sewage draining opening, the feeding end of the rotary grillage machine (2) is located in the feeding box (1), and the discharging end of the rotary grillage machine (2) is located in the residue collecting box (3). The kitchen waste treatment device has the advantages that residues in filtrate are preliminarily separated through the rotary grillage machine, then the filtrate is settled in the feeding box, the residues are discharged through the spiral conveyor, the separated filtrate is discharged and collected through the water outlet, solid residue separation and conveying and purified kitchen waste liquid treatment and utilization can be rapidly achieved, and the kitchen waste treatment device is simple in structure and convenient to use. And the production line load of a kitchen waste treatment plant is effectively reduced, and the productivity and benefits are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen waste treatment, in particular to an impurity removal device for the filtrate at the bottom of a kitchen waste bin. Background Technique

[0002] Kitchen waste has a high water content and needs to be temporarily stored in a bin when entering the treatment plant. Arranging the sieve plate holes under the bin can effectively filter out a large amount of liquid in the kitchen waste, which has good anaerobic digestion treatment and significantly reduces the production capacity of the treatment plant production line. However, some impurities, namely anaerobic interference substances, remain in this part of the filtrate, which directly affects the load of the kitchen waste treatment production line. Content of the Utility Model

[0003] The purpose of the utility model is to provide an impurity removal device for the filtrate at the bottom of a kitchen waste bin aiming at the above deficiencies.

[0004] The utility model includes a feed box, a rotary grille machine and a slag collection box. A sewage discharge port is arranged at the bottom of the feed box, and a drain port is arranged on the feed box near the sewage discharge port. A screw conveyor communicating with the slag collection box is arranged on the sewage discharge port. The feed end of the rotary grille machine is located inside the feed box, and the discharge end of the rotary grille machine communicates with the slag collection box through a discharge channel. A liquid inlet pipe is arranged on the feed box, and the liquid inlet pipe is located above the feed end of the rotary grille machine.

[0005] The feed box is respectively an upper liquid inlet section and a lower precipitation section. The lower precipitation section is an inverted trapezoidal structure with a wide top and a narrow bottom. The rotary grille machine is located inside the upper liquid inlet section. The drain port is located on the lower precipitation section, and the sewage discharge port is located at the bottom of the lower precipitation section. The length of the sewage discharge port is the same as the length of the lower precipitation section. The screw conveyor is a shaftless screw conveyor, and the length of the feed inlet of the screw conveyor is the same as the length of the sewage discharge port.

[0006] A sewage discharge valve is arranged at the discharge port of the screw conveyor.

[0007] The drain port is arranged on the feed box at the end far from the liquid inlet pipe, and a filter cover is arranged on the inner side of the lower precipitation section at the drain port.

[0008] The filter cover is composed of a plurality of U-shaped frames that gradually become smaller and are assembled from top to bottom. Filter plates are arranged between adjacent two U-shaped frames and at the bottom of the lowermost U-shaped frame. The top of the uppermost U-shaped frame is a closed structure.

[0009] An anti-flushing pipe is arranged at the top of the uppermost U-shaped frame.

[0010] The rotary grille machine is installed on the feed box in an inclined state with a lower feed end and a higher discharge end. A chute is arranged between the liquid inlet pipe and the rotary grille machine.

[0011] A set of traveling wheels is arranged at the bottom of the slag collection box.

[0012] The advantages of the present utility model are as follows: the residue in the filtrate is preliminarily separated by a rotary grille machine, then the filtrate precipitates in the feed box, the residue is discharged by a screw conveyor, and the separated filtrate is discharged and collected through a drain port, which can quickly realize the separation, transportation of solid residues and the treatment and utilization of the liquid of kitchen waste after purification, effectively reducing the production line load of the kitchen waste treatment plant and improving the production capacity and efficiency. Description of the Drawings

[0013] Figure 1 It is a schematic structural view of the present utility model.

[0014] Figure 2 It is a schematic side view structural view of the present utility model.

[0015] Figure 3 It is a schematic structural view of the filter cover of the present utility model. Detailed Embodiments

[0016] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model. It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0018] In the description of the embodiments of the present utility model, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, 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 therefore cannot be construed as a limitation of the present utility model. In addition, in the description of the present utility model, if terms such as "first", "second", etc. are used only for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0019] In the description of the embodiments of the present utility model, it should also be noted that unless otherwise clearly specified and defined, if the terms "set" and "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] As shown in the attached drawings, the present utility model includes a feed box 1, a rotary grille machine 2, and a slag collection box 3. A sewage discharge port is provided at the bottom of the feed box 1, and a drain port 4 is provided on the feed box 1 near the sewage discharge port. A screw conveyor 5 communicating with the slag collection box 3 is provided on the sewage discharge port. The feed end of the rotary grille machine 2 is located inside the feed box 1, and the discharge end of the rotary grille machine 2 communicates with the slag collection box 3 through a discharge channel 7. A liquid inlet pipe 6 is provided on the feed box 1, and the liquid inlet pipe 6 is located above the feed end of the rotary grille machine 2.

[0021] The filtrate filtered by the kitchen waste bin enters the feed box 1 through the liquid inlet pipe 6 and falls onto the rotary grille machine 2. When the rotary grille machine 2 rotates, the solid impurities in the filtrate are carried out and enter the slag collection box 3 through the discharge channel 7. That is, the rotary grille machine 2 conducts preliminary filtration on the incoming filtrate. The filtered filtrate precipitates in the feed box 1, and the settled solid waste enters the screw conveyor 5. The filtered filtrate is discharged to the anaerobic digestion treatment station through the drain port 4. The screw conveyor 5 is regularly opened to discharge the settled solid waste into the slag collection box 3.

[0022] Furthermore, the feed box 1 is respectively an upper liquid inlet section and a lower precipitation section. The lower precipitation section is an inverted trapezoidal structure with a wide top and a narrow bottom. The rotary grille machine 2 is located inside the upper liquid inlet section, the drain port 4 is located on the lower precipitation section, the sewage discharge port is located at the bottom of the lower precipitation section, and the length of the sewage discharge port is the same as the length of the lower precipitation section. The screw conveyor 5 is a shaftless screw conveyor, and the length of the feed inlet of the screw conveyor 5 is the same as the length of the sewage discharge port.

[0023] The lower precipitation section being an inverted trapezoidal structure with a wide top and a narrow bottom facilitates the sediment to concentrate towards the middle and enter the screw conveyor 5.

[0024] Furthermore, a sewage discharge valve is provided at the discharge port of the screw conveyor 5, which is convenient for regular opening to discharge the settled waste.

[0025] Furthermore, the drain port 4 is located on the feed box 1 at the end far from the liquid inlet pipe 6, and a filter cover 8 is provided inside the lower precipitation section at the position of the drain port 4.

[0026] That is, the drain port 4 and the liquid inlet pipe 6 are respectively located at both ends of the feed tank 1. The filtrate discharged from the liquid inlet pipe 6 is initially filtered on the rotary grille machine 2 and then falls into the feed tank 1 to start sedimentation. The drain port 4 is at the end far from the liquid inlet pipe 6, so that the residue in the filtrate closer to the liquid inlet pipe 6 end will be less, improving the solid-liquid separation effect. The filter cover 8 can prevent the residue in the filtrate from being discharged together with the filtrate.

[0027] Preferably, the filter cover 8 is assembled by a plurality of U-shaped frames 9 that gradually become smaller from top to bottom. Filter plates 10 are provided between adjacent two U-shaped frames 9 and at the bottom of the lowermost U-shaped frame 9. The top of the uppermost U-shaped frame 9 is a closed structure.

[0028] After the drain port 4 is opened, the filtrate is sucked into the filter cover 8. The filter plate 10 has an opening facing downward, effectively reducing the adsorption of solid sediment in the filtrate on the filter plate 10.

[0029] Furthermore, a backwash pipe 11 is provided at the top of the uppermost U-shaped frame 9. The backwash pipe 11 can be communicated with the filtrate of the anaerobic digestion treatment station through a pump. After being periodically opened, the filtrate is pumped out to backwash the inside of the filter cover 8 to prevent the filter holes from being blocked.

[0030] Preferably, the rotary grille machine 2 is installed on the feed tank 1 in an inclined shape with a lower feed end and a higher discharge end. The inclination angle is 35°. A slide plate 12 is provided between the liquid inlet pipe 6 and the rotary grille machine 2. The width of the slide plate 12 is not greater than the width of the rotary grille machine 2, facilitating the incoming filtrate to be evenly spread on the rotary grille machine 2.

[0031] Furthermore, a set of walking wheels are provided at the bottom of the slag collection tank 3, facilitating the quick replacement and cleaning of the slag collection tank 3.

Claims

1. A device for removing impurities from the filtrate at the bottom of a kitchen waste silo, characterized in that The invention comprises a feed box (1), a rotary screen machine (2) and a slag collecting box (3); a sewage outlet is provided at the bottom of the feed box (1), and a water outlet (4) is provided on the feed box (1) near the sewage outlet; a screw conveyor (5) is provided on the sewage outlet and communicates with the slag collecting box (3); a feed end of the rotary screen machine (2) is located in the feed box (1); a discharge end of the rotary screen machine (2) is communicated with the slag collecting box (3) via a discharge channel (7); a liquid inlet pipe (6) is provided on the feed box (1), and the liquid inlet pipe (6) is located above the feed end of the rotary screen machine (2).

2. A device for removing impurities from the bottom filtrate of a kitchen waste silo according to claim 1, characterized in that The feed box (1) comprises an upper liquid inlet section and a lower sedimentation section, the lower sedimentation section is an inverted trapezoidal structure with a wide top and a narrow bottom, the rotary screen machine (2) is located in the upper liquid inlet section, the drainage port (4) is located on the lower sedimentation section, the sewage outlet is located at the bottom of the lower sedimentation section, and the length of the sewage outlet is the same as the length of the lower sedimentation section, the screw conveyor (5) is a shaftless screw conveyor, and the length of the feed port of the screw conveyor (5) is the same as the length of the sewage outlet.

3. A device for removing impurities from the bottom filtrate of a kitchen waste silo according to claim 2, characterized in that A drain valve is provided on the discharge port of the screw conveyor (5).

4. The device for removing impurities from the bottom filtrate of a kitchen waste silo according to claim 2, characterized in that The drainage port (4) is located on the feed box (1) at one end away from the liquid inlet pipe (6), and a filter cover (8) is provided on the inner side of the lower sedimentation section located at the drainage port (4).

5. The device for removing impurities from the bottom filtrate of a kitchen waste silo according to claim 4, characterized in that The filter cover (8) is composed of a plurality of successively smaller U-shaped frames (9) assembled from top to bottom, and filter plates (10) are provided between two adjacent U-shaped frames (9) and at the bottom of the lowest U-shaped frame (9), and the top of the highest U-shaped frame (9) is a closed structure.

6. The device for removing impurities from the bottom filtrate of a kitchen waste silo according to claim 5, characterized in that A backwash pipe (11) is provided on the top of the uppermost U-shaped frame (9).

7. The device for removing impurities from the bottom filtrate of a kitchen waste silo according to claim 1, characterized in that The rotary screen machine (2) is installed on the feed box (1) in an inclined shape with the feed end lower and the discharge end higher, and a slide plate (12) is provided between the liquid inlet pipe (6) and the rotary screen machine (2).

8. The device for removing impurities from the bottom filtrate of a kitchen waste silo according to claim 1, characterized in that A set of travel wheels is provided at the bottom of the slag collecting box (3).

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