CN218980783U

CN218980783U - Circulation sand removal device of dry anaerobic biogas slurry

Info

Publication number: CN218980783U
Application number: CN202221947645.2U
Authority: CN
Inventors: 苏秋同; 唐水秀; 卢国贤; 蔡靖
Original assignee: Guangxi Land Renewable Energy Co ltd
Current assignee: Guangxi Land Renewable Energy Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2023-05-09
Anticipated expiration: 2032-07-25

Abstract

The utility model belongs to the technical field of dry anaerobic treatment, in particular to a circulating sand removal device for dry anaerobic biogas slurry, which comprises: the cyclone sand remover is used for separating sand setting and biogas slurry; the spiral feeder is used for conveying sand setting; the filtrate tank is arranged at the tail end of the spiral feeder and is connected with a liquid outlet of the spiral feeder through a liquid conveying pipe, and is used for collecting biogas slurry filtered out from settled sand; the sand setting tank is arranged below the sand outlet of the spiral feeder and is used for collecting sand setting; the sand removing device capable of circularly removing the sand in the biogas slurry is formed by the cyclone sand remover, the spiral feeder, the liquid filtering tank and the centrifugal pump, the sand in the biogas slurry can be removed through repeated and repeated filtration and separation, the removed sand and the biogas slurry after sand removal are separately collected, and therefore, when the centrifugal pump is used for carrying out solid-liquid separation treatment on the biogas slurry after sand removal, the centrifugal pump cannot be damaged due to the fact that a large amount of sand is contained in the biogas slurry.

Description

Circulation sand removal device of dry anaerobic biogas slurry

Technical Field

The utility model belongs to the technical field of dry anaerobic treatment, and particularly relates to a circulating sand removal device for dry anaerobic biogas slurry.

Background

Along with the development of economy and society, the current treatment of urban wet garbage (mainly kitchen garbage and kitchen garbage) is a hot spot in the field of solid waste treatment, and the adoption of anaerobic harmless treatment is the current mainstream technology for treating the garbage at home and abroad. The dry anaerobic technology is emphasized and adopted because of strong redundancy, less biogas slurry generation and high treatment load, and the anaerobic fermentation treatment technology utilizes anaerobic microorganisms to convert wet garbage into biogas, biogas slurry and biogas residue, and the biogas can be combusted for heat supply or power generation, so that the resource utilization is realized.

However, when wet garbage is treated by a dry anaerobic method, a large amount of sand and stone are deposited in biogas slurry generated by kitchen garbage after anaerobic digestion reaction, and in the subsequent conversion treatment process of the biogas slurry, a desliming centrifuge is generally used for carrying out solid-liquid separation on the biogas slurry, and a centrifugal bearing is damaged along with the entering of sand settling in the solid-liquid separation centrifuge, so that the desliming centrifuge cannot normally operate, and frequent maintenance is required for the desliming centrifuge.

Disclosure of Invention

The utility model provides a circulating sand removal device for dry anaerobic biogas slurry, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a cyclic desanding device for dry anaerobic biogas slurry, comprising:

the cyclone sand remover is used for separating sand setting and biogas slurry;

the spiral feeder is used for conveying sand setting;

the filter liquid tank is arranged at the tail end of the spiral feeder and is connected with a liquid outlet of the spiral feeder through a liquid conveying pipe, and is used for collecting biogas slurry filtered out from settled sand;

wherein, one side intermediate position department of whirl sand remover be provided with the inside feed pipe of intercommunication of whirl sand remover, the natural pond liquid by the feed pipe gets into in the whirl sand remover, the bottom one side of filter media jar is provided with the centrifugal pump, the input of centrifugal pump pass through the transfer line with filtrate jar output intercommunication, the output pass through the transfer line with the feed pipe intercommunication makes the natural pond liquid of collecting in the filtrate jar can be by the centrifugal pump extraction is passed through the transfer line transmission reentry in the whirl sand remover.

Preferably, a discharger is additionally arranged between the cyclone sand remover and the feed inlet of the screw feeder, and the settled sand centrifugally separated by the cyclone sand remover enters the screw feeder at a constant speed through the discharger.

Preferably, one end of the screw feeder is in threaded connection with a servo motor, a screw auger is arranged in the screw feeder, the screw auger is connected with an output shaft of the servo motor, and the screw auger is driven by the servo motor to rotate in the screw feeder.

Preferably, the screw feeder is installed one end below of servo motor has set firmly the sand outlet, and the liquid outlet has been seted up to the other end, the liquid outlet pass through the transfer line with the filtrate jar is connected.

Preferably, a sand setting tank is arranged below the sand outlet.

Preferably, the screw feeder is disposed at an inclined-degree angle.

Preferably, the device further comprises a biogas slurry tank for collecting biogas slurry and a liquid suction pump with an output end connected with the biogas slurry tank, wherein the input end of the liquid suction pump is connected with a liquid taking pipe, and the input end of the liquid taking pipe is inserted into the cyclone sand remover from top to bottom.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model forms a sand removing device capable of circularly removing sand in biogas slurry by means of the cyclone sand remover, the spiral feeder, the liquid filtering tank and the centrifugal pump, and the sand in the biogas slurry can be removed by repeated and repeated filtration and separation, and the removed sand and the biogas slurry after sand removal are separately collected, so that when the centrifugal pump is used for carrying out solid-liquid separation treatment on the biogas slurry after sand removal, the damage to a centrifugal bearing of the centrifugal pump caused by a large amount of sand in the biogas slurry is avoided, and the problem that the equipment is difficult to clean due to the fact that a large amount of sand is contained in the biogas slurry during the treatment is solved.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a partial schematic axial view of a screw feeder according to the present utility model.

In the figure: 1. a cyclone desander; 11. a feed pipe; 12. a liquid taking tube; 2. a discharger; 3. a screw feeder; 31. a servo motor; 32. a spiral auger; 33. a sand outlet; 34. a liquid outlet; 35. an infusion tube; 36. a feed inlet; 4. a filtrate tank; 41. a transmission tube; 5. a sand setting tank; 6. a biogas slurry pond; 7. a centrifugal pump; 8. and (5) a liquid pump.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, the present utility model provides the following technical solutions: a cyclic desanding device for dry anaerobic biogas slurry, comprising: cyclone sand remover 1, discharger 2, screw feeder 3, filtrate tank 4, grit chamber 5 and biogas slurry pond 6.

The cyclone sand remover 1 is used for separating sand and biogas slurry, the tank body of the cyclone sand remover 1 consists of an upper part and a lower part, the top end of the tank body is of a cylindrical structure with an upper diameter and a lower diameter, the bottom end of the tank body is of a conical cylindrical structure with a gradually reduced cylindrical diameter from top to bottom, a feeding pipe 11 communicated with the inside of the cyclone sand remover 1 is arranged at the middle position of one side of the cyclone sand remover 1, the feeding pipe 11 is arranged at the eccentric position of the tank body of the cyclone sand remover 1, after the biogas slurry enters the cyclone sand remover 1 through the feeding pipe 11, due to different densities of the sand and the biogas slurry, the biogas slurry with low density is enabled to rise under the combined action of centrifugal force, centripetal force, buoyancy and fluid drag force, sand with large density is settled, and settled sand falls into a conical slag hopper at the lower part of the tank body along the wall surface of a cone.

Further, the conical slag hopper discharge end of the cyclone sand remover 1 is provided with a discharger 2, the discharger 2 is provided with an upper feed inlet and a lower discharge outlet, a rotary impeller is arranged in the discharger 2, when sand setting enters the rotary impeller from the upper feed inlet, an external motor is driven to enable the rotary impeller to rotate, and volumetric lattices of the rotary impeller are filled with sand grains discharged from the discharge outlet by motor driving, the discharge outlet of the conical slag hopper of the cyclone sand remover 1 is connected with the feed inlet of the discharger 2 in the embodiment, when sundries accumulated in the slag hopper reach a certain degree, the discharger 2 is started, and settled sand grains can flow out of the cyclone sand remover 1 under the action of water flow to enter the discharger 2.

Still further, the discharge opening of tripper 2 is provided with spiral feeder 3, and the one end spiro union of spiral feeder 3 has servo motor 31, and inside is provided with spiral auger 32, and spiral auger 32 and servo motor 31's output shaft is driven by servo motor 31 and can be at the inside rotation of spiral feeder 3.

Specifically, the top end of the spiral feeder 3 is provided with a feeding hole, a sand outlet 33 is fixedly formed below one end of the spiral feeder 3 provided with a servo motor 31, a liquid outlet 34 is formed at the other end of the spiral feeder, the discharging hole of the discharger 2 is connected with the feeding hole of the spiral feeder 3, the spiral feeder 3 is used for conveying sand grains, the discharger 2 can drive the rotary impeller to rotate at a constant speed, the uniform discharge of the sand grains is realized, so that the sand grains which are separated by sedimentation in the cyclone sand remover 1 can be conveyed to the spiral feeder 3 at a constant speed, and the sand grains are conveyed and discharged to the grit chamber 5 by the spiral feeder 3.

Further, the filtrate tank 4 is disposed at the tail end of the screw feeder 3, and is connected to the liquid outlet 34 of the screw feeder 3 via a liquid pipe 35 for collecting the biogas slurry filtered from the settled sand.

Thus, the sand particles settled in the cyclone sand remover 1 are discharged into the screw feeder 3 at a constant speed through the discharger 2 under the action of the water flow, and the sand particles are discharged into the screw feeder 3 under the action of the water flow, so that the sand particles discharged into the screw feeder 3 contain a large amount of biogas slurry, and in order to separate the biogas slurry from the sand particles during the transportation of the screw feeder 3, the screw feeder 3 is arranged to be inclined at an angle of 30-45 degrees, so that the sand particles move toward the sand outlet 33 of the screw feeder 3 under the rotation of the screw auger 32 driven by the servo motor 31 until the sand particles are discharged from the screw feeder 3, fall into the grit chamber 5 below the sand outlet 33, and the biogas slurry carried in the sand particles is discharged from the liquid outlet 34 into the filtrate tank 4 through the transfusion tube 35 communicating with the liquid outlet 34 along the inclined slope of the screw feeder 3.

Since the biogas slurry flowing into the filtrate tank 4 is discharged from the screw feeder 3, part of sand grains are carried in the biogas slurry, and in order to increase the sand removal amount of the sand grains in the biogas slurry and reduce the sand grain content in the biogas slurry, in a preferred embodiment, a centrifugal pump 7 is arranged at one side of the bottom end of the filtrate tank 4, the input end of the centrifugal pump 7 is communicated with the output end of the filtrate tank 4 through a transmission pipe 41, and the output end is communicated with the feed pipe 11 through the transmission pipe 41, so that the biogas slurry collected in the filtrate tank 4 can be pumped by the centrifugal pump 7 and transmitted into the cyclone sand remover 1 again through the transmission pipe 41.

Thus, the biogas slurry recovered in the filtrate tank 4 is pumped by the transfer pipe 41 to enter the cyclone 1 again under the action of the centrifugal pump 7, and the process is circulated again.

In an alternative embodiment, the circulating sand removing device further comprises a biogas slurry pond 6 for collecting biogas slurry and a liquid pump 8 with an output end connected with the biogas slurry pond 6, wherein the input end of the liquid pump 8 is connected with a liquid taking pipe 12, and the input end of the liquid taking pipe 12 is inserted into the cyclone sand remover 1 from top to bottom; the upper layer biogas slurry which is used for separating sand grains from the cyclone sand remover 1 is pumped to the biogas slurry pond 6 through the liquid pump 8.

Specifically, the depth of the liquid taking pipe 12 inserted into the cyclone sand remover 1 can be correspondingly adjusted according to the height of the upper biogas slurry.

The working principle and the using flow of the utility model are as follows: biogas slurry enters the cyclone sand remover 1 from the middle of the top of the cyclone sand remover 1, gravity and cyclone dual action of the cyclone sand remover 1 are used for separation, settled sand is deposited to the upper layer of the tank body of the cyclone sand remover 1, the biogas slurry with small density is pumped and discharged to the biogas slurry pond 6 through the liquid pump 8, settled sand at the bottom of the cone is uniformly separated to the feed inlet 36 of the spiral feeder 1 through the discharger 2, the servo motor 31 drives the spiral auger 32 to rotate, settled sand entering the spiral feeder 3 is continuously conveyed, the spiral feeder 3 is discharged from the sand outlet 33 to enter the settled sand pond 5, the tail part of the spiral feeder 3 is the liquid outlet 34, the settled sand enters the liquid filtering tank 4 through the liquid conveying pipe 35, and is collected through the liquid filtering tank 4, and is pumped and returned to the cyclone sand remover 1 again through the centrifugal pump 7 and the conveying pipe 41, so that the settled sand in the biogas slurry is continuously circulated, the settled sand is removed as far as possible, when the settled sand in the biogas slurry is subjected to solid-liquid separation process, the settled sand in the settled sand liquid is contained in the settled sand liquid is continuously processed, the settled sand is prevented from being separated into a large amount, and the settled sand can be separated by the utility model, and the settled sand can be easily removed by the device in the utility model, and the device can be reasonably used for the urban sand removal process, and the device is used for the sewage is only has a reasonable treatment process.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a circulation sand removal device of dry process anaerobic biogas slurry which characterized in that includes:

the cyclone sand remover (1) is used for separating sand setting and biogas slurry;

a screw feeder (3) for conveying the sand setting;

the filtrate tank (4) is arranged at the tail end of the spiral feeder (3) and is connected with a liquid outlet (34) of the spiral feeder (3) through a liquid conveying pipe (35) for collecting biogas slurry filtered out from the sand setting;

wherein, one side intermediate position department of whirl desander (1) be provided with feed pipe (11) of the inside intercommunication of whirl desander (1), biogas slurry by feed pipe (11) get into in whirl desander (1), bottom one side of filter media jar (4) is provided with centrifugal pump (7), the input of centrifugal pump (7) pass through transmission pipe (41) with filtrate jar (4) output intercommunication, the output pass through transmission pipe (41) with feed pipe (11) intercommunication makes biogas slurry that collects in filtrate jar (4) can be by centrifugal pump (7) extraction is passed through transmission pipe (41) transmission reenter in whirl desander (1).

2. The circulating sand removal device for dry anaerobic biogas slurry according to claim 1, wherein: a discharger (2) is additionally arranged between the cyclone sand remover (1) and a feed inlet (36) of the spiral feeder (3), and the settled sand centrifugally separated by the cyclone sand remover (1) enters the spiral feeder (3) at a uniform speed through the discharger (2).

3. The circulating sand removal device for dry anaerobic biogas slurry according to claim 1, wherein: one end spiro union of screw feeder (3) has servo motor (31), and inside is provided with spiral auger (32), spiral auger (32) with servo motor (31)'s output shaft, by servo motor (31) drive can be in inside rotation of screw feeder (3).

4. A dry anaerobic biogas slurry circulating sand removal device according to claim 3, wherein: the screw feeder (3) is provided with a sand outlet (33) fixedly arranged below one end of the servo motor (31), the other end of the screw feeder is provided with a liquid outlet (34), and the liquid outlet (34) is connected with the filtrate tank (4) through a liquid conveying pipe (35).

5. The circulating sand removal device for dry anaerobic biogas slurry according to claim 4, wherein: a sand setting tank (5) is arranged below the sand outlet (33).

6. The dry anaerobic biogas slurry circulating and sand removing device according to claim 5, wherein: the screw feeder (3) is arranged to be inclined at an angle of 30-45 degrees.

7. The circulating sand removal device for dry anaerobic biogas slurry according to any one of claims 1-6, wherein: the biogas slurry collecting device is characterized by further comprising a biogas slurry tank (6) for collecting biogas slurry and a liquid suction pump (8) with an output end connected with the biogas slurry tank (6), wherein the input end of the liquid suction pump (8) is connected with a liquid taking pipe (12), and the input end of the liquid taking pipe (12) is inserted into the cyclone sand remover (1) from top to bottom.