CN111922028A - Ruminant type kitchen waste treatment device and method - Google Patents

Abstract

The invention provides a ruminant-type kitchen waste treatment device and method. The ruminant-type kitchen waste treatment device includes a circulation system, a screw pressing mechanism, a convergence and solids removal mechanism, a slurry separation mechanism, an oil-water sedimentation mechanism, and a digestion mechanism. In the ruminant-type kitchen waste processing method, during the kitchen waste feeding period, the ruminant-type kitchen waste processing device processes the kitchen waste that is put in in real time; The kitchen waste is processed in reverse circulation, or the inside of the pressing mechanism is cleaned with external liquid. Aiming at the generation time of kitchen waste is concentrated in the time of three meals, the resulting contradiction between the treatment time and the amount of kitchen waste, and other problems in the treatment of kitchen waste arising therefrom, the invention comprehensively utilizes the time inside and outside the three meals for operation. , to achieve solid phase reduction of food waste, separation of liquid oil and water and rapid digestion, effectively solving the problem of food waste treatment.

Description

A ruminant type kitchen waste treatment device and method

technical field

The present invention relates to the technical field of kitchen waste treatment, in particular to a ruminant-type kitchen waste treatment device and method.

Background technique

The extremely high moisture content and high oil content of kitchen waste have a great impact on the subsequent recovery and treatment effect of kitchen waste treatment. It is very easy to cause the kitchen permeate to directly penetrate into the groundwater layer, resulting in secondary pollution and the phenomenon that most of the kitchen organic matter is wasted. At present, the pretreatment technology of kitchen waste can effectively reduce the moisture content and oil content of the food waste, and provide good solid-phase materials that meet the oil content and moisture content for the subsequent treatment of the food waste. Materials that are difficult to dehydrate (High viscosity, high dispersibility) processing and high requirements for the speed and efficiency of solid-liquid separation, the complex material characteristics of the mixed liquid will lead to increased energy consumption and failure. In addition, the generation time of kitchen waste is concentrated in the time of three meals. This characteristic of large feeding amount in a short period of time also causes a huge contradiction in the processing time and processing volume of kitchen waste. In view of the above problems, the present invention proposes a new kitchen waste treatment device and method, which can effectively separate the oil-water-solid three-phase, recycle the oil phase, and discharge a small amount of solid-phase material with low moisture content for subsequent aerobic use Fermentation, the remaining liquid is digested and discharged.

SUMMARY OF THE INVENTION

The purpose of the present invention is to focus on the three-meal time for the generation of kitchen waste, resulting in the contradiction between the processing time and the amount of processing of the kitchen waste, and the resulting kitchen waste treatment equipment is difficult to reduce at one time in a short time. To quantify the problems of pretreatment and discharge standards, provide a ruminant-type food waste treatment device and method, which can comprehensively use the time inside and outside three meals to operate, realize solid phase reduction of food waste, separation of oil and water in liquid phase and rapid digestion .

The present invention is a ruminant-type kitchen waste treatment device, which adopts the following technical scheme: comprising a circulation system, a screw pressing mechanism, a convergence and solids removal mechanism, a slurry separation mechanism, an oil-water sedimentation mechanism, and a digestion mechanism; The lower part of the screw press mechanism is connected with the slurry separation mechanism, the slurry separation mechanism is connected with the oil-water sedimentation mechanism, and the slurry separation mechanism is connected with the oil-water separation mechanism. The precipitation mechanisms are all connected with the digestion mechanism, the circulation system is respectively connected with the screw press mechanism and the digestion mechanism, and the screw press mechanism includes a squeeze cage.

The technical scheme of the present invention also includes the following subsidiary schemes:

The circulation system includes a first water inlet valve, a second water inlet valve, a pump, a liquid suction pipe, a liquid outlet valve, a return pipe, a return valve, a discharge valve, a discharge pipe, and a water inlet pipe.

The screw pressing mechanism also includes a screw shaft, a pressing screw and a spray pipe.

On the circumference of the screw shaft, there is a squeezing screw for squeezing, and a spray pipe is arranged above the squeezing cage for cleaning the outside of the squeezing cage.

The converging and solid-removing mechanism includes a converging port stator, a converging port rotor, a driving gear, and a solid material outlet. The converging port stator and the converging port rotor are respectively provided with a converging port stator discharge port and a converging port rotor discharge port, so There is a solid material outlet on one side of the stator of the converging mouth, and the driving gear can change the relative position between the discharge port of the stator of the converging mouth and the discharge port of the rotor of the converging mouth to control the discharge of the screw press mechanism. A mouth, the convergence and solid removal mechanism is connected with the tail of the squeeze cage.

The slurry separation mechanism includes a filter screen, an oil guide groove, an oil guide pipe, a slurry chamber, a slurry discharge pipe, and a slurry discharge valve, and the slurry chamber is arranged below the squeezing cage.

The oil-water precipitation mechanism includes an oil-water precipitation chamber, an oil storage chamber, an oil floating pipe, a water outlet pipe of the oil-water chamber, and an oil-water valve.

The digestion mechanism includes a digestion chamber and a stirring frame, the top of the digestion chamber is provided with a microbial feeding port, and the middle and lower part of the inner cavity of the digestion chamber is provided with a stirring frame.

A ruminant-type kitchen waste treatment method. The ruminant-type kitchen waste treatment device has different working processes during the kitchen waste feeding period and the kitchen waste non-feeding period. Treatment; during the non-feeding period of the kitchen waste, on the basis of adding microorganisms and enzymes to the digestion mechanism, the kitchen waste remaining in the digestion mechanism is subjected to reverse circulation treatment, or the interior of the pressing mechanism is cleaned with external liquid.

A ruminant kitchen waste treatment method, further comprising the following specific processes:

(1) Food waste feeding period: The food waste is crushed by the crushing mechanism and then falls to the feed port of the screw pressing mechanism. The motor drives the screw shaft and the pressing screw to press the kitchen waste, and the slurry during the pressing process passes through the pressing cage. The solids that fall into the pulp separation mechanism below, and the solids that cannot pass through the pressing cage are discharged through the converging and solid-removing mechanism at the tail of the pressing mechanism; by adjusting the overlap between the rotor outlet and the stator outlet of the converging and solid-removing mechanism, it can be determined by The degree of squeezing of the kitchen waste by the pressing mechanism; the kitchen waste slurry falling into the slurry chamber is precipitated, and the oil-water mixture with lower density is filtered by the upper filter screen on both sides of the slurry chamber, and then falls into the outer side of the filter screen. In the trough-shaped oil guide groove, it flows to the inside of the oil-water sedimentation chamber through the oil guide pipe at the bottom of the oil guide groove, and the fine particles precipitated at the bottom of the slurry chamber are discharged into the digestion chamber through the slurry discharge pipe. It is closed during the gradual accumulation process, and opened after the slurry reaches a certain height and settles for a certain period of time. After the slurry chamber is emptied, the slurry valve is closed to wait for the next cycle; the oil in the oil-water precipitation chamber is in the upper layer and the water is in the lower layer, and the liquid inside it reaches After a certain height, the oil in the upper layer flows to the oil storage chamber through the oil floating pipe in the upper part of the oil-water sedimentation chamber, and the water in the lower part flows to the digestion chamber through the outlet pipe of the oil-water chamber at the bottom of the oil-water sedimentation chamber, and the oil and water on the pipe of the outlet pipe of the oil-water chamber. The valve is closed during the gradual accumulation of liquid, and is opened when the liquid reaches a certain height. After the oil-water sedimentation chamber is emptied, the outlet pipe of the oil-water chamber is closed to wait for the next cycle;

(2) Non-feeding period of kitchen waste: By adjusting the rotor discharge port and stator discharge port of the convergent solids discharge mechanism, the discharge port of the screw press mechanism is closed, and a certain amount of microbial feed port is injected into the digestion chamber from the microbial feeding port at the top of the digestion chamber. Microorganisms and enzymes; the liquid outlet valve and return valve of the circulation system are opened, and the kitchen waste slurry with microorganisms and enzymes in the digestion chamber enters the feeding port of the pressing mechanism through the pump and the return pipe, and then passes through the pressing mechanism after being squeezed and stirred. The squeezing cage falls into the pulp chamber below, the pulp discharge valve on the pulp discharge pipe is opened, and the pulp inside the pulp chamber can freely enter the digestion chamber through the pulp discharge pipe. Pump out into the next cycle; when the kitchen waste slurry is decomposed and meets the discharge requirements, the return valve of the circulation system is closed, the discharge valve on the discharge pipe is opened, and the liquid in the digestion chamber is discharged; after the above process is completed, the second inlet of the circulation system The water valve is opened, the external water source enters the suction pipe, and is pumped to the feeding port of the pressing mechanism to clean the interior of the pressing mechanism. Spray pipe, the spray pipe above the squeezing cage cleans the outside of the squeezing cage.

Compared with the prior art, the beneficial effects of the present invention are:

1. The technical scheme of the present invention can comprehensively utilize the time inside and outside of three meals, and fully and effectively dispose of garbage. In view of the fact that the generation time of kitchen waste is concentrated in the time of three meals, resulting in the contradiction between the processing time and the processing amount of kitchen waste, the present invention draws on the mechanism of animal ruminant digestion, and proposes a ruminant type kitchen waste treatment device and method, which not only The garbage disposal is normally carried out during the three meals, and more importantly, the other time outside the three meals is fully utilized. Through the joint action of the device and microorganisms, the circulatory system and other structures are used to realize the process similar to animal rumination. The slurry formed in the medium is fully decomposed to achieve the discharge standard.

2. The technical solution of the present invention can make the recovery of oil not affected while the garbage is rapidly decomposed. In the process of food waste treatment, both microorganisms and enzymes are required to have the ability to rapidly decompose all components of the food waste, and oil is required to be used as a resource. In view of this contradiction between reduction and resource utilization, the circulation system, the convergent solids discharge mechanism and the screw pressing mechanism of the present invention are used together, which can not only realize the separation of solid-liquid from the kitchen waste but also realize the rapid digestion and discharge of the remaining liquid. The three-stage separation system of screw pressing mechanism, slurry separation mechanism, and oil-water sedimentation mechanism can also effectively separate the three phases of oil-water-solid, so that oil recycling is not affected by microorganisms.

Description of drawings

Fig. 1 is the structural representation of the device;

2 is a first cross-sectional view of the device;

3 is a second cross-sectional view of the device;

Figure 4 is a third cross-sectional view of the device;

Figure 5 is an exploded view of the convergence port.

Detailed ways

As shown in FIG. 1 and FIG. 2, a ruminant-type kitchen waste treatment device of the present invention adopts the following technical solutions: including a circulation system 02, a screw pressing mechanism 03, a convergence and solids removal mechanism 04, a slurry separation mechanism 06, an oil-water mechanism Sedimentation mechanism 07, digestion mechanism 09; the rear part of the screw press mechanism 03 is connected with the convergence and solid removal mechanism 04, and the bottom of the screw press mechanism 03 is connected with the slurry separation mechanism 06, the slurry is separated The mechanism 06 is connected to the oil-water sedimentation mechanism 07, the slurry separation mechanism 06 and the oil-water sedimentation mechanism 07 are both connected to the digestion mechanism 09, and the circulation system 02 is respectively connected to the screw press mechanism 03 and the The digestion mechanism 09 is connected, and the screw pressing mechanism 03 includes a pressing cage 033 .

The technical scheme of the present invention also includes the following subsidiary schemes:

As shown in FIG. 3 , the circulation system 02 includes a first water inlet valve 029 , a second water inlet valve 021 , a pump 022 , a liquid suction pipe 023 , a liquid outlet valve 024 , a return pipe 025 , a return valve 026 , and a discharge valve 027 , discharge pipe 028, water inlet pipe 020.

As shown in FIG. 4 , the screw pressing mechanism 03 further includes a screw shaft 031 , a pressing screw 032 , and a spray pipe 034 . A squeezing screw 032 is arranged on the circumference of the screw shaft 031 for pressing, and a spray pipe 034 is arranged above the squeezing cage 033 for cleaning the outside of the squeezing cage 033 .

As shown in FIG. 5 , the converging and solid-removing mechanism 04 includes a converging port stator 041, a converging port rotor 042, a driving gear 043, and a solid material outlet 049, and the converging port stator 041 and the converging port rotor 042 are respectively provided with converging ports The stator discharge port 046 and the converging port rotor discharge port 047 are provided with a solid material outlet 049 on one side of the converging port stator 041. The driving gear 043 can change the converging port stator discharge port 046 and the converging port rotor. The relative position of the discharge ports 047 is used to control the discharge port of the screw press mechanism, and the convergence and solid removal mechanism 04 is connected to the tail of the press cage 033 for discharging.

The slurry separation mechanism 06 includes a filter screen 066, an oil guide groove 061, an oil guide pipe 062, a slurry chamber 063, a slurry discharge pipe 064, and a slurry discharge valve 065, and the slurry chamber 063 is provided below the squeezing cage 033. .

The oil-water precipitation mechanism 07 includes an oil-water precipitation chamber 0700 , an oil storage chamber 071 , an oil-floating pipe 072 , an oil-water chamber outlet pipe 073 , and an oil-water valve 074 .

The digestion mechanism 09 includes a digestion chamber 091 and a stirring frame 092 . The top of the digestion chamber 091 is provided with a microbial feeding port, and the middle and lower part of the inner cavity of the digestion chamber 091 is provided with a stirring frame 092 .

The structure of the device is further described below: the crushing mechanism 011 is arranged at the top of the whole device, the screw pressing mechanism 03 is arranged below the crushing mechanism 011 and the discharge port of the crushing mechanism 011 corresponds to the feeding port of the screw pressing mechanism 03, the motor 01 It is located at one end of the screw shaft 031. The screw shaft 031 is provided with a squeezing screw 032 for squeezing. Above the squeezing cage 033 is a spray pipe 034 for cleaning the outside of the squeezing cage 033. The rear part is provided with a converging and solid-removing mechanism 04. The converging-port stator 041 of the converging and solid-removing mechanism 04 is installed on the screw shaft 031 through the shaft hole 043 in the center, and the converging port rotor 042 is installed on the rotor shaft 044 through the rotor shaft hole 045 in the center. On the top, the rotor 042 is provided with a rotor discharge port 047, the section of the convergent stator 041 is provided with a stator discharge port 046 and the circumference is provided with gear teeth 048, the gear teeth 048 mesh with the drive gear 043, and the convergence port stator One side of 041 is provided with solid material outlet 049.

Below the squeezing cage 033 is provided a slurry separation mechanism 06, the slurry chamber 063 of the separation mechanism 06 is located directly below the squeezing cage 033, the upper part of the slurry chamber 063 is provided with a filter screen 066, and the outer side of the filter screen 066 is provided with a filter screen 066. There is a trough-shaped oil guide groove 061. The bottom of the oil guide groove 061 is provided with an oil guide pipe 062. The pipeline of the oil guide pipe 062 leads to the inside of the oil-water sedimentation chamber 0700. The bottom of the slurry chamber 063 is provided with a slurry pipe 064. There is a slurry discharge valve 065 on it, and the other end of the slurry discharge pipe 064 is connected to the digestion chamber 091 .

An oil-water precipitation chamber 0700 is provided below the slurry separation mechanism 06. The bottom of the oil-water precipitation chamber 0700 is provided with an oil-water chamber outlet pipe 073. An oil-water valve 074 is provided on the pipeline of the oil-water chamber outlet pipe 073. The other end of the oil-water chamber outlet pipe 073 The digestion chamber 091 is communicated with, and the top of the oil-water sedimentation chamber 0700 is provided with an oil floating pipe 072 , and the other end of the floating oil pipe 072 is connected to the oil storage chamber 071 .

One end of the water inlet pipe 020 of the circulation system 02 is connected to the external water source under pressure, and the other end is respectively connected to the spray pipe 034 through the first water inlet valve 029, and to the liquid suction pipe 023 through the second water inlet valve 021. There is a liquid outlet valve 024 between the digestion chambers 091, one end of the suction pipe 023 is connected to the inlet of the pump 022, the outlet of the pump 022 is connected to the return pipe 025, the return pipe 025 is provided with a return valve 026, and one end of the discharge pipe 028 is connected to the return flow The other end of the pipe 025 is open, and the discharge pipe 028 is provided with a discharge valve 027 .

A ruminant-type kitchen waste treatment method. The ruminant-type kitchen waste treatment device has different working processes during the kitchen waste feeding period and the kitchen waste non-feeding period. Disposal; during the non-feeding period of the kitchen waste, on the basis of adding microorganisms and enzymes to the digestion mechanism 09, the kitchen waste remaining in the digestion mechanism 09 is subjected to reverse circulation treatment, or the external liquid is used to carry out the internal processing of the pressing mechanism. cleaning.

In the present invention, while taking into account the three-meal time for garbage disposal, it is more important to make full use of the other time outside the three-meal time, through the joint action of the device and microorganisms, to achieve a process similar to animal rumination, and to form a slurry during the treatment process. Decomposition to achieve emission standards.

A ruminant kitchen waste treatment method, further comprising the following specific processes:

1) Food waste feeding time

The kitchen waste is crushed by the crushing mechanism 011 and then falls to the feed port of the screw press mechanism 03. The motor 01 drives the screw shaft 031 and the screw press 032 to press the kitchen waste, and the slurry during the pressing process falls through the squeezing cage 033. Slurry separation mechanism 06, the solids that cannot pass through the squeezing cage 033 are discharged through the convergence and solids removal mechanism 04 at the tail of the squeezing mechanism 03.

The overlap of the rotor outlet 047 and the stator outlet 046 of the convergent solidification mechanism 04 determines the size of the outlet, which in turn determines the degree of squeezing the kitchen waste by the press mechanism 03. When the size of the convergence port needs to be adjusted, the drive gear 043 drives the The gear teeth 048 on the circumference of the converging mouth stator 041 rotate.

The kitchen waste slurry falling into the slurry chamber 063 is precipitated, and the oil-water mixture with lower density is filtered by the upper filter screen 066 on both sides of the slurry chamber 063, and then falls into the groove-shaped oil guide groove 061 outside the filter screen 066. and then flow into the oil-water precipitation chamber 070 through the oil-guiding pipe 062 at the bottom of the oil-guiding groove 061. The fine particles precipitated at the bottom of the slurry chamber 063 are discharged into the digestion chamber 091 through the slurry discharge pipe 064. The valve 065 is closed during the gradual accumulation of the slurry, and is opened after the slurry reaches a certain height and settles for a certain period of time. After the slurry chamber 063 is emptied, the slurry discharge valve 065 is closed to wait for the next cycle.

The oil in the oil-water precipitation chamber 070 is in the upper layer and the water is in the lower layer. After the liquid inside reaches a certain height, the oil in the upper layer flows to the oil storage chamber 071 through the oil floating pipe 072 in the upper part of the oil-water precipitation chamber 070, and the water in the lower part passes through the oil-water The oil-water chamber outlet pipe 073 at the bottom of the sedimentation chamber 070 flows to the digestion chamber 091, and the oil-water valve 074 on the pipeline of the oil-water chamber outlet pipe 073 is closed during the liquid accumulation process, and is opened when the liquid reaches a certain height, and the oil-water sedimentation chamber 070 is emptied The water outlet pipe 073 of the rear oil-water chamber is closed to wait for the next cycle.

2) Non-feeding period of kitchen waste

Since no new kitchen waste is added to the device during the non-feeding period, the drive gear 043 drives the gear teeth 048 on the circumference of the stator 041 of the convergent opening to rotate, and the rotor discharge opening 047 and the stator discharge opening 046 of the convergent solidification mechanism 04 close the spiral The discharge port of the pressing mechanism 03 and the microorganism feeding port 093 at the top of the digestion chamber 091 put a certain amount of microorganisms and enzymes into the digestion chamber 091 .

The liquid outlet valve 024 and the return valve 026 of the circulation system 02 are opened, and the kitchen waste slurry with microorganisms and enzymes in the digestion chamber 091 enters the feeding port of the pressing mechanism 03 through the pump 022 and the return pipe 025, and then is squeezed by the pressing mechanism 03. After pressing and stirring, it falls into the pulp chamber 063 below through the squeezing cage 033, the pulp discharge valve 065 on the pulp discharge pipe 064 is opened, and the pulp in the pulp chamber 063 can freely enter the digestion chamber 091 through the pulp discharge pipe 064. The middle and lower part of the inner cavity of the digestion chamber 091 is provided with a stirring frame 092 and then pumped out by the pump 022 to enter the next cycle after stirring.

When the kitchen waste slurry is decomposed and reaches the discharge requirement, the return valve 026 of the circulation system 02 is closed, the discharge valve 027 on the discharge pipe 028 is opened, and the liquid in the digestion chamber 091 is discharged.

After the above process is completed, the second water inlet valve 021 of the circulation system 02 is opened, and the external water source enters the liquid suction pipe 023, and is sent to the feeding port of the pressing mechanism 03 through the pump 022 to clean the interior of the pressing mechanism. After the internal cleaning is completed, The first water inlet valve 029 is opened, and the pressurized external water source in the water inlet pipe 020 leads to the spray pipe 034 , and the spray pipe 034 above the squeezing cage 033 cleans the outside of the squeezing cage 033 .

In view of the existing contradiction between reduction and resource utilization of kitchen waste, the circulation system, the convergent solids discharge mechanism and the screw pressing mechanism of the present invention are used together, which can not only realize the separation of solid-liquid of the kitchen waste, but also realize the rapid digestion and discharge of the remaining liquid. The three-stage separation system of the screw pressing mechanism, the slurry separation mechanism and the oil-water precipitation mechanism provided by the present invention can also effectively separate the oil-water-solid three-phase, so that the oil recycling is not affected by microorganisms. It can be seen that the present invention can effectively solve the existing problems of kitchen waste treatment and promote the progress of waste treatment technology.

Claims (10)

1. A ruminant-type kitchen waste treatment device, characterized in that it comprises a circulation system, a screw pressing mechanism, a convergence and solids removal mechanism, a slurry separation mechanism, an oil-water precipitation mechanism, and a digestion mechanism; The convergence and solids removal mechanism is connected, the bottom of the screw press mechanism is connected with the slurry separation mechanism, the slurry separation mechanism is connected with the oil-water sedimentation mechanism, the slurry separation mechanism and the oil-water sedimentation mechanism Both are connected with the digestion mechanism, the circulation system is respectively connected with the screw press mechanism and the digestion mechanism, and the screw press mechanism includes a squeeze cage. 2 . The ruminant-type food waste treatment device according to claim 1 , wherein the circulation system comprises a first water inlet valve, a second water inlet valve, a pump, a liquid suction pipe, a liquid outlet valve, and a return pipe. 3 . , return valve, discharge valve, discharge pipe, water inlet pipe. 3 . The ruminant-type kitchen waste treatment device according to claim 1 , wherein the screw pressing mechanism further comprises a screw shaft, a pressing screw and a spray pipe. 4 . 4. The ruminant-type kitchen waste treatment device according to claim 3, characterized in that, a squeezing screw is provided on the circumference of the screw shaft for squeezing, and a spray pipe is provided above the squeezing cage for cleaning the outside of the squeezing cage. 5. The ruminant-type food waste treatment device according to claim 1, wherein the converging and solid removing mechanism comprises a converging stator, a converging rotor, a driving gear, and a solid material outlet, and the converging stator and the converging The rotor is provided with a converging port stator discharge port and a converging port rotor discharge port respectively, one side of the converging port stator is provided with a solid material outlet, and the driving gear can change the converging port stator discharge port and the converging port stator discharge port. The relative position between the discharge ports of the rotors is used to control the discharge ports of the screw press mechanism, and the convergence and solid removal mechanism is connected to the tail of the squeeze cage. 6 . The ruminant-type food waste treatment device according to claim 1 , wherein the slurry separation mechanism comprises a filter screen, an oil guide groove, an oil guide pipe, a slurry chamber, a slurry discharge pipe, and a slurry discharge valve, wherein the The pulp chamber is arranged below the squeezing cage. 7 . The ruminant-type food waste treatment device according to claim 1 , wherein the oil-water sedimentation mechanism comprises an oil-water sedimentation chamber, an oil storage chamber, an oil floating pipe, a water outlet pipe of the oil-water chamber, and an oil-water valve. 8 . 8 . The ruminant-type food waste treatment device according to claim 1 , wherein the digestion mechanism comprises a digestion chamber and a stirring frame, a microorganism feeding port is provided on the top of the digestion chamber, and the inner cavity of the digestion chamber is provided with a microbial feeding port. 9 . There is a stirring rack in the middle and lower part. 9. A ruminant-type kitchen waste treatment method, characterized in that the working process of the ruminant-type kitchen waste treatment device is different during the kitchen waste feeding period and the non-feeding period of the kitchen waste, and is aimed at real-time during the kitchen waste feeding period. The put-in kitchen waste is processed; in the non-feeding period of the kitchen waste, on the basis of adding microorganisms and enzymes to the digestion mechanism, the kitchen waste remaining in the digestion mechanism is reversely cycled, or the external liquid is used to treat the food waste. The inside of the press mechanism is cleaned. 10. The method for treating ruminant food waste as claimed in claim 9, further comprising the following specific processes: (1) Food waste feeding period: The food waste is crushed by the crushing mechanism and then falls to the feed port of the screw pressing mechanism. The motor drives the screw shaft and the pressing screw to press the kitchen waste, and the slurry during the pressing process passes through the pressing cage. The solids that fall into the pulp separation mechanism below, and the solids that cannot pass through the pressing cage are discharged through the converging and solid-removing mechanism at the tail of the pressing mechanism; by adjusting the overlap between the rotor outlet and the stator outlet of the converging and solid-removing mechanism, it can be determined by The degree of squeezing of the kitchen waste by the pressing mechanism; the kitchen waste slurry falling into the slurry chamber is precipitated, and the oil-water mixture with lower density is filtered by the upper filter screen on both sides of the slurry chamber, and then falls into the outer side of the filter screen. In the trough-shaped oil guide groove, it flows to the inside of the oil-water sedimentation chamber through the oil guide pipe at the bottom of the oil guide groove, and the fine particles precipitated at the bottom of the slurry chamber are discharged into the digestion chamber through the slurry discharge pipe. It is closed during the gradual accumulation process, and opened after the slurry reaches a certain height and settles for a certain period of time. After the slurry chamber is emptied, the slurry valve is closed to wait for the next cycle; the oil in the oil-water precipitation chamber is in the upper layer and the water is in the lower layer, and the liquid inside it reaches After a certain height, the oil in the upper layer flows to the oil storage chamber through the oil floating pipe in the upper part of the oil-water sedimentation chamber, and the water in the lower part flows to the digestion chamber through the outlet pipe of the oil-water chamber at the bottom of the oil-water sedimentation chamber, and the oil and water on the pipe of the outlet pipe of the oil-water chamber. The valve is closed during the gradual accumulation of liquid, and is opened when the liquid reaches a certain height. After the oil-water sedimentation chamber is emptied, the outlet pipe of the oil-water chamber is closed to wait for the next cycle; (2) Non-feeding period of kitchen waste: By adjusting the rotor discharge port and stator discharge port of the convergent solids discharging mechanism, closing the discharge port of the screw press mechanism, and injecting a certain amount from the microbial feeding port on the top of the digestion chamber into the digestion chamber Microorganisms and enzymes; the liquid outlet valve and return valve of the circulation system are opened, and the kitchen waste slurry with microorganisms and enzymes in the digestion chamber enters the feeding port of the pressing mechanism through the pump and the return pipe, and then is squeezed and stirred by the pressing mechanism. The over-pressing cage falls into the pulp chamber below, the pulp discharge valve on the pulp discharge pipe is opened, and the pulp inside the pulp chamber can freely enter the digestion chamber through the pulp discharge pipe. The pump is pumped out and enters the next cycle; when the kitchen waste slurry is decomposed and meets the discharge requirements, the return valve of the circulation system is closed, the discharge valve on the discharge pipe is opened, and the liquid in the digestion chamber is discharged; The water inlet valve is opened, the external water source enters the suction pipe, and is pumped to the feeding port of the pressing mechanism to clean the inside of the pressing mechanism. To the spray pipe, the spray pipe above the squeezing cage cleans the outside of the squeezing cage.

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