CN217555894U

CN217555894U - Sand discharging and mud supplementing device for kitchen slurry feeding anaerobic system

Info

Publication number: CN217555894U
Application number: CN202221775554.5U
Authority: CN
Inventors: 袁珍凤; 阮鹿凡
Original assignee: Wuxi Masun Environmental Energy Technology Co ltd
Current assignee: Jiangsu Masheng Biotechnology Co ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-10-11
Anticipated expiration: 2032-07-11

Abstract

The utility model discloses a sand discharging and mud supplementing device for kitchen slurry to enter an anaerobic system, which comprises an anaerobic sand discharging system, a biogas slurry centrifugal dehydration system, an anaerobic mud supplementing system and an instrument automatic control system, wherein the anaerobic sand discharging system comprises a reactor tank body, a spiral discharging machine and a slag discharge gate valve; the biogas slurry centrifugal dehydration system comprises a temporary storage tank, a feed pump and a centrifugal dehydrator; the anaerobic sludge supplementing system comprises a screw conveyor, an electric gate valve, a sludge tank and a sludge reflux pump; the instrument autonomous system includes online MLSS concentration meter and marsh gas composition analysis appearance, and the reactor jar body links to each other with the jar of keeping in, and the charge pump sets up in jar one end of keeping in, divides two tunnel to get into centrifugal dehydrator and sludge tank respectively, and centrifugal dehydrator and screw conveyer link to each other, are provided with first export and second export on the screw conveyer, and electronic push-pull valve sets up in first exit, is provided with the conveying pipe between first export and the sludge tank, and the mud backwash pump sets up in sludge tank one end, and the mud backwash pump passes through the back flow and links to each other with the reactor jar body.

Description

Sand discharging and mud supplementing device for kitchen slurry feeding anaerobic system

Technical Field

The utility model relates to an anaerobic reactor technical field especially relates to a meal kitchen thick liquid advances sand discharging and benefit mud device of anaerobic system.

Background

The organic slurry of the kitchen waste contains a large amount of organic matters, has high biodegradability and is an optimal raw material for producing biogas, which is easy to ferment and degrade by anaerobic microorganisms. The garbage slurry is subjected to anaerobic fermentation to generate biogas so as to realize resource utilization, the generated biogas slurry and biogas residues are temporarily stored and then enter a centrifugal dehydration system, the dehydrated biogas residues are transported outwards, and the filtrate enters a biochemical sewage system unit. However, a large amount of anaerobic sludge is carried in the anaerobic biogas slurry and the biogas residues, when the increment rate of the sludge is lower than the loss rate of the sludge, the concentration of the sludge in the anaerobic tank is reduced, the digestion capability of the anaerobic tank on the kitchen slurry can be influenced, and the stability of a kitchen anaerobic fermentation system can be effectively ensured through a sludge supplement measure. The existing anaerobic reactor has the problems of large sand content at the bottom and serious sludge loss at the top.

Publication number CN215975166U utility model discloses an anaerobism benefit mud system, the system includes: a control module; the sludge concentration monitoring module is electrically connected with the control module and is used for monitoring the sludge concentration in the anaerobic tank; the sludge pump of the sludge concentration tank is electrically connected with the control module; can the sludge concentration in the real-time supervision anaerobism jar, control module can be according to the sludge concentration data that sludge concentration monitoring module sent, and control sludge thickening pond sludge discharge pump mends mud in with the mud suction anaerobism jar in the sludge thickening pond, has promoted benefit mud accuracy nature and timeliness. However, the above scheme only provides a scheme for concentrating and supplementing mud by utilizing physical natural sedimentation of a mud concentration tank, and does not consider the characteristic that biogas slurry generated by anaerobic fermentation of kitchen slurry is not easy to subside.

The utility model discloses a be CN216039547U utility model relates to an anaerobic fermentation tank that can realize automatic sand cleaning function, including the fermentation cylinder, the fermentation cylinder adopts awl end structure, and the bottom sets up the sand discharge mouth, the sand discharge mouth passes through the sand discharge pipeline and links to each other with the sand discharge pump entry, set up the valve for the isolation on the sand discharge pipeline, set up the agitator in the fermentation cylinder, lay the sand cleaning pipeline in the awl end structure, set up a plurality of nozzles on the sand cleaning pipeline, sand cleaning pipeline entry links to each other with the natural pond liquid pump export, sets up the valve for the isolation on the natural pond liquid pump export pipeline, natural pond liquid pump entry links to each other with the natural pond. The utility model discloses can realize the automatic sand removal function of anaerobic fermentation tank, avoid artifical sand removal operation. However, above-mentioned utility model awl end structure is laid and is cleared away the sand pipeline, but easily scale deposit in using, and because gravity extrusion, the pipeline changes in the siltation, and steady operation difficulty adopts screw feed, can effectively solve siltation, scale deposit and the hardened scheduling problem of sand setting, and the operation is stable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a meal kitchen thick liquid advances row's sand and benefit mud device of anaerobic system to it is big to solve anaerobic reactor bottom sand content, and top mud runs off serious problem.

In order to achieve the above object, the utility model provides a following technical scheme: a sand discharge and mud supplement device for kitchen slurry to enter an anaerobic system comprises an anaerobic sand discharge system, a biogas slurry centrifugal dehydration system, an anaerobic mud supplement system and an instrument automatic control system, wherein the anaerobic sand discharge system comprises a reactor tank body, a spiral discharging machine and a slag discharge gate valve arranged at the outlet end of the spiral discharging machine; the biogas slurry centrifugal dehydration system comprises a temporary storage tank, a feeding pump and a centrifugal dehydrator; the anaerobic sludge supplementing system comprises a screw conveyor, an electric gate valve, a sludge tank and a sludge reflux pump; the instrument autonomous system is including setting up online MLSS concentration meter and the marsh gas composition analysis appearance at the reactor jar internal, reactor jar body upper portion is provided with the discharging pipe, the discharging pipe links to each other with the jar of keeping in, the charge pump sets up in jar one end of keeping in, the charge pump divide into two tunnel and gets into centrifugal dehydrator and sludge impoundment respectively, and is provided with first electric control valve and second electric control valve on two tunnel respectively, centrifugal dehydrator and screw conveyer link to each other, the last first export and the second export of being provided with of screw conveyer, electronic push-pull valve sets up in first exit, be provided with the conveying pipe between first export and the sludge impoundment, the sludge reflux pump sets up in sludge impoundment jar one end, the sludge reflux pump passes through the back flow and links to each other with the reactor jar body. It should be noted that the temporary storage tank, the sludge tank and the reactor tank are internally provided with a stirrer, and the centrifugal dehydrator comprises a corresponding dosing system and the like. The device also comprises a controller, and the opening and closing of the valve and the starting and closing of the related mechanism are realized by writing data into the controller.

As a further improvement of the above technical solution:

the reactor tank body is provided with toper bottom plate and plane bottom plate, the spiral discharge machine sets up on the toper bottom plate, a plurality of notches are seted up to the part that the spiral discharge machine stretched into the tank body, the discharge flange is installed to the part that the spiral discharge machine stretched out the tank body, the gate valve of slagging tap links to each other with the discharge flange.

A stirrer and a liquid level meter are arranged in the sludge tank, and a visual window is arranged on the sludge tank.

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

the utility model discloses a meal kitchen thick liquid advances anaerobic system's sediment outflow and benefit mud device has improved sediment outflow efficiency, can prevent and treat the loss of anaerobic jar mud simultaneously, has improved anaerobic digestion effect, has guaranteed anaerobic fermentation's operating stability. Solves the problems of large sand content at the bottom and serious sludge loss at the top of the existing anaerobic reactor.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is the structural schematic diagram of the stirring mechanism of the present invention.

Reference numerals: 1. a reactor tank; 10. a screw conveyor; 11. a biogas component analyzer; 12. a first electrically controlled valve; 13. a second electrically controlled valve; 14. an electric gate valve; 15. a delivery tube; 2. a slag discharge gate valve; 3. a spiral discharging machine; 4. an online MLSS concentration meter; 5. a temporary storage tank; 6. a feed pump; 7. a centrifugal dehydrator; 8. a sludge tank; 9. a sludge reflux pump.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply 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 limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 and fig. 2, the device for discharging sand and supplementing mud in a kitchen slurry anaerobic system in this embodiment includes an anaerobic sand discharging system, a biogas slurry centrifugal dehydration system, an anaerobic mud supplementing system and an instrument automatic control system, wherein the anaerobic sand discharging system includes a reactor tank 1, a spiral discharging machine 3 and a slag discharge gate valve 2 disposed at an outlet end of the spiral discharging machine 3; the biogas slurry centrifugal dehydration system comprises a temporary storage tank 5, a feed pump 6 and a centrifugal dehydrator 7; the anaerobic sludge supplementing system comprises a screw conveyor 10, an electric gate valve 14, a sludge tank 8 and sludgeA reflux pump 9; the automatic control system of the instrument comprises an online MLSS concentration meter 4 and a biogas component analyzer 11 which are arranged in a reactor tank body 1, wherein the biogas component analyzer 11 can detect the concentrations of methane, hydrogen sulfide and the like and judge the quality of biogas, and the online MLSS concentration meter 4 arranged on a side plate of the reactor tank body 1 can monitor the sludge concentration in real time and can perform automatic control linkage real-time operation to supplement sludge when the concentration is reduced; the reactor jar body 1 upper portion is provided with the discharging pipe, the discharging pipe links to each other with jar 5 of keeping in, charge pump 6 sets up in jar 5 one end of keeping in, charge pump 6 divides into two tunnel and gets into centrifugal dehydrator 7 and sludge tank 8 respectively, and be provided with first electric control valve 12 and second electric control valve 13 on two tunnel respectively, centrifugal dehydrator 7 links to each other with screw conveyer 10, be provided with first export and second export on screw conveyer 10, electronic push-pull valve 14 sets up in first exit, be provided with conveying pipe 15 between first export and the sludge tank 8, sludge reflux pump 9 sets up in sludge tank 8 one end, sludge reflux pump 9 links to each other with the reactor jar body 1 through the back flow. The spiral discharging machine 3 and the spiral conveyor 10 adopt the same spiral conveyor, the lining plate is made of UHMWPE (ultra-high molecular weight polyethylene), the conveying groove, the cover plate, the material inlet and outlet and the standard part are made of SUS304 stainless steel materials, the spiral body is made of Q345B steel, and the support carbon steel is used for corrosion prevention; conveying amount: 2.0m ³ H; driving power: 2.2KW,380V/50Hz, rotating speed 15r/mi spiral body specification:

blades 70x25mm.

The reactor tank body 1 is provided with a conical bottom plate and a planar bottom plate, the spiral discharging machine 3 is arranged on the conical bottom plate, a plurality of notches are formed upwards in the part, stretching into the tank body, of the spiral discharging machine 3, a discharging flange is installed on the part, stretching out of the tank body, of the spiral discharging machine 3, and the slag discharging gate valve 2 is connected with the discharging flange. During overhaul, after water is drained from the reactor tank body 1, the discharge gate valve 2 is opened, the spiral discharging machine 3 is started to discharge mud, and when mud and sand cannot be discharged, the mud and sand enter the reactor tank body 1 manually and shovel into the spiral inlet output tank body. The bottom water distribution device is a conical bottom plate or a flat bottom, the flat bottom has the problem that mud and sand are not easy to discharge, and the conical bottom has the risk that a top plate is easy to crack due to contact with the ground and expansion caused by heat and contraction caused by cold. The scheme adopts the conical and flat-bottomed composite bottom plate, solves the problem of discharging silt, achieves the purposes of durability and stability, and is suitable for various geological environments.

The discharging of the top of the reactor tank body 1 carries a large amount of sludge to enter a temporary storage tank 5, the sludge is lifted by a charging pump 6 to enter a centrifugal dehydrator 7 or a sludge tank 8, the path is switched by an electric butterfly valve, namely, the opening and closing of a first electric control valve 12 and a second electric control valve 13 are controlled, the dehydrated filtrate enters a subsequent biochemical treatment unit, the dehydrated biogas residue is conveyed by a screw conveyor 10, and the biogas residue enters the sludge tank 8 from a conveying pipe 15 through the opening and closing of an electric gate valve 14.

A stirrer and a liquid level meter are arranged in the sludge tank 8, when the sludge concentration in the reactor tank body 1 is reduced to be lower than 20g/L and the methane concentration displayed by the methane component analyzer 11 is lower than 50%, the feed pump 6 is started, the second electric control valve 13 of the sludge tank 8 is opened, 1/5 of biogas slurry is firstly added, then the second electric control valve 13 is closed, the first electric control valve 12 of the centrifugal dehydrator 7 is opened, the centrifugally dehydrated biogas residue is conveyed by the screw conveyor 10, the electric gate valve 14 is opened, so that the concentrated biogas residue sludge falls into the sludge tank 8, the stirrer of the sludge tank 8 is started to stir to be uniformly mixed, the liquid inlet electric valve 13 and the electric gate valve 14 of the sludge tank 8 are closed after a certain liquid level is reached, and the sludge pump 9 is started to pump the sludge into the anaerobic tank; the sludge tank 8 is provided with a visual window for observing the sludge performance status, and the sludge performance includes but is not limited to concentration, mixing condition, color and the like, so as to supplement sludge to the anaerobic tank 8.

The utility model discloses a meal kitchen thick liquid advances anaerobic system's sediment outflow and mends mud device and has improved sediment outflow efficiency, can prevent and treat the loss of anaerobic jar mud simultaneously, has improved anaerobic digestion effect, has guaranteed anaerobic fermentation's operating stability.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a meal kitchen thick liquid advances sand discharging and benefit mud device of anaerobic system, includes anaerobism sand discharging system, natural pond liquid centrifugal dehydration system, anaerobism benefit mud system and instrument autonomous system, its characterized in that: the anaerobic sand discharge system comprises a reactor tank body (1), a spiral discharging machine (3) and a slag discharge gate valve (2) arranged at the outlet end of the spiral discharging machine (3); the biogas slurry centrifugal dehydration system comprises a temporary storage tank (5), a feed pump (6) and a centrifugal dehydrator (7); the anaerobic sludge supplementing system comprises a screw conveyor (10), an electric gate valve (14), a sludge tank (8) and a sludge return pump (9); the instrument autonomous system is including setting up online MLSS concentration meter (4) and marsh gas composition analysis appearance (11) in the reactor jar body (1), reactor jar body (1) upper portion is provided with the discharging pipe, the discharging pipe links to each other with jar (5) of keeping in, charge pump (6) set up in jar (5) one end of keeping in, charge pump (6) divide into two the tunnel and get into centrifugal dehydrator (7) and sludge jar (8) respectively, and be provided with first electric control valve (12) and second electric control valve (13) on two the tunnel respectively, centrifugal dehydrator (7) and screw conveyer (10) link to each other, be provided with first export and second export on screw conveyer (10), electric gate valve (14) set up in first exit, be provided with conveying pipe (15) between first export and sludge jar (8), sludge reflux pump (9) set up in sludge jar (8) one end, sludge reflux pump (9) link to each other through the back flow and the reactor jar body (1).

2. The device for discharging the sand and supplementing the mud of the kitchen slurry into the anaerobic system according to claim 1, which is characterized in that: the reactor tank body (1) is provided with a conical bottom plate and a planar bottom plate, the spiral discharging machine (3) is arranged on the conical bottom plate, a plurality of notches are arranged on the part, stretching into the tank body, of the spiral discharging machine (3) up, a discharging flange is arranged on the part, stretching out of the tank body, of the spiral discharging machine (3), and the slag discharging gate valve (2) is connected with the discharging flange.

3. The device for discharging the sand and supplementing the mud of the kitchen slurry into the anaerobic system according to claim 2, characterized in that: a stirrer and a liquid level meter are arranged in the sludge tank (8), and a visual window is arranged on the sludge tank (8).