CN105313362B - A kind of livestock and poultry do clear Night Soil Solid and Liquid Separation Equipment and method - Google Patents

Abstract

The invention relates to a solid-liquid separation device and method for dry-cleaned feces of livestock and poultry. The equipment part mainly includes a casing, in which a damaged unit, a feeding unit, and a solid-liquid separation unit are sequentially arranged from top to bottom; the damaged unit includes a main shaft, and a plurality of rotating shafts that take into account both stirring and the mucous membrane on the surface of the damaged feces are fixedly connected to the main shaft. teeth; the solid-liquid separation unit includes a first drive motor fixedly connected to the shell, and the first drive motor drives the solid-liquid separation auger to rotate through the first reducer; after feces enter from the damaged unit, they are fed through the feed unit Go to the solid-liquid separation unit for solid-liquid separation. After separation, the fluid flows out from the water outlet, and the solid flows out from the discharge end. Through the design of a new structure, this device can realize efficient solid-liquid separation of dry and clean manure of livestock and poultry under the condition of adding a small amount of water for the first time and using a small amount of waste water in the subsequent cycle.

Description

A kind of equipment and method for solid-liquid separation of livestock and poultry dry cleaning feces

technical field

The invention relates to the related technical field of agricultural equipment, in particular to a solid-liquid separation device and method for dry and cleaned manure of livestock and poultry.

Background technique

With the large-scale and rapid development of the breeding industry, the substantial increase in the number of livestock and poultry will produce a large amount of livestock and poultry manure. At present, the aquaculture industry generally adopts the method of flushing (soaking) manure with water to clean up the excrement of livestock and poultry, which consumes a large amount of water resources and results in the discharge of a large amount of excrement and sewage of livestock and poultry. Livestock and poultry manure produced by the breeding industry has become an important source of environmental pollution.

Harmless treatment of livestock and poultry manure to realize resource utilization is an effective way to solve the pollution problems of air, water resources and farmland caused by livestock and poultry manure.

Solid-liquid separation equipment is the key equipment for the harmless treatment of livestock and poultry manure and the realization of resource utilization. The existing solid-liquid separation equipment is mainly aimed at the solid-liquid separation of livestock and poultry manure in the way of water flushing (soaking) manure. Feeding is easy to cause bridging and blocking, and at the same time, the solid output has high moisture content, low degree of automation, and low efficiency.

At present, the existing solid-liquid separator adopts ordinary screw extrusion and outlet pressure hammer to adjust the structure, and the moisture content of the solid output of solid-liquid separation of feces applied in the way of flushing (bubbling) feces with water is more than 60%. The high moisture content of solids limits the harmless treatment and subsequent reuse of solid output.

At present, most of the existing solid-liquid separation equipment for livestock and poultry manure use submerged pumps to pump in the feed, and dry and clean manure cannot be directly pumped in. And because the surface layer of dry feces is covered with a layer of mucous membrane, the existing solid-liquid separator does not have a mechanism to destroy the mucous membrane before extrusion, resulting in a very low liquid separation rate in the feces. Therefore, the existing solid-liquid separation equipment for livestock and poultry manure is only suitable for flushing (soaking) manure with a large amount of water until the water content of the manure is as high as 90% or above, resulting in a lot of waste of water resources. And because the moisture content of feces before solid-liquid separation is too high, it essentially determines that the dry feces after solid-liquid separation still has a relatively high moisture content.

Therefore, how to design a device to realize the solid-liquid separation of livestock and poultry dry manure, and realize less water addition or waste water recycling during the separation process, not only realize efficient solid-liquid separation of manure, but also effectively save water resources, is an important issue. Problems urgently needed to be solved by those skilled in the art.

Contents of the invention

The object of the present invention is to provide a solid-liquid separation device for dry and clean manure of livestock and poultry in order to overcome the above-mentioned deficiencies in the prior art. This device realizes efficient solid-liquid separation of livestock and poultry manure by designing a new structure.

In order to achieve the above object, the present invention adopts the following technical solutions:

A solid-liquid separation device for dry-cleaning manure of livestock and poultry, including a casing, in which a damage unit, a feeding unit, and a solid-liquid separation unit are sequentially arranged from top to bottom;

The damaged unit includes a main shaft, and a plurality of spiral teeth are fixedly connected to the main shaft for stirring and damaging the mucous membrane on the surface of feces;

The solid-liquid separation unit includes a first drive motor fixedly connected to the shell, and the first drive motor drives the solid-liquid separation auger to rotate through the first reducer;

After entering the feces from the damaged unit, it is fed to the solid-liquid separation unit through the feed unit for solid-liquid separation. After separation, the fluid flows out from the water outlet, and the solid flows out from the discharge end.

Preferably, the solid-liquid separation auger has a variable-diameter variable-pitch helical structure, and the diameter and pitch of the solid-liquid separation auger gradually decrease from the end receiving the power of the reducer to the other end.

Preferably, the damage unit includes a stirring box, and the top of the stirring box has a second driving motor and a feeding port vertically arranged, and the second driving motor drives the main shaft to rotate.

Preferably, the feeding unit includes a third driving motor located at the bottom of the mixing box and arranged laterally, and the third driving motor drives the quantitative feeding auger inside the mixing box to rotate through the second reducer.

Preferably, there is a baffle on the outside of the discharge end, one side of the baffle is connected with the spring and the screw in turn, the screw receives the torque of the adjusting motor to realize its own rotation, and the other end of the screw is adapted to the motor through a thread pair, and the adjusting The motor is installed on the motor bracket.

Preferably, a moisture sensor is embedded in the baffle.

Preferably, the housing is supported by a frame, and an electric control system is installed on the frame, and the moisture sensor transmits signals to the electric control system, and the electric control system controls the operation of all motors.

Preferably, there is a moving piece bracket inside the housing, a plurality of moving pieces are fixedly connected to the moving piece bracket, moving pieces are placed between adjacent static pieces, and the solid-liquid separation auger runs through all moving pieces and static pieces .

Preferably, the baffle is a tapered structure.

While providing the structural solution, the present invention also provides a method for solid-liquid separation of poultry feces using the above-mentioned solid-liquid separation equipment, comprising the following steps:

A. Adjust the distance between the baffle and the solid-liquid separation auger according to the design requirements;

B. The poultry manure is mixed with water and then enters the damaged unit for stirring;

C. The feed unit transports the stirred mixture to the solid-liquid separation unit;

D. The first driving motor is started, and the mixture is transported and compressed by the solid-liquid separation auger to complete the solid-liquid separation.

The beneficial effects of the present invention are:

(1) During the rotation of the solid-liquid separation auger, the liquid in the feces flows out through the gap between the moving piece and the static piece. During this period, the moving piece will rotate and move with the feces. Due to the mobility of the moving piece, both It ensures the extrusion and separation of the liquid in the feces, and solves the disadvantages of the fixed screen mesh that is easy to block the feces, reduces the frequency of screen cleaning, and reduces the difficulty of cleaning;

(2) The moisture sensor is embedded in the baffle, and the moisture content of the solids at the outlet of the extrusion chamber is measured in real time by using the linear relationship between the dielectric constant of the feces and the water content of the volume of the feces;

(3) The electric control system not only has the common start and stop functions, but also can receive the data returned by the moisture sensor in real time, use the controller to process the data in real time, and output electrical signals to control the motor;

(4) The outer side of the outlet baffle is compressed by the pressure of the compression spring, and the compression degree of the compression spring is controlled by the rotation of the servo motor to control the movement of the screw, and the compression degree of the compression spring is controlled by the movement of the screw, and finally changes the baffle By monitoring the water content of the feces, the opening pressure of the baffle plate is controlled in real time to control the water content of the solid-liquid separation of the feces, and it is the first time to realize automatic control on similar solid-liquid separation equipment.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of damaged unit in the present invention;

Fig. 3 is the relative relationship figure of moving plate, static plate and solid-liquid separation auger among the present invention;

Fig. 4 is the matching figure of compression spring among the present invention;

In the figure 1, the first drive motor, 2, the first reducer, 3, the third drive motor, 4, the input chamber, 5, the second reducer, 6, the quantitative feed auger, 7, the mixing box, 8, Feeding port, 9. Extrusion chamber, 10. Moving plate, 11. Static plate, 12. Baffle plate, 13. Moisture sensor, 14. Adjusting motor, 15. Compression spring, 16. Rack, 17. Outlet hose, 18. Water outlet, 19. Solid-liquid separation auger, 20. Electric control system, 21. Second drive motor, 22. Rotary tooth, 23. Screw rod, 24. Shell, 25. Discharge port, 26. Motor bracket, 27, static and dynamic sheet support, 28, screw gear shaft, 29, bolt group, 30, connecting frame.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings.

Embodiment: A kind of solid-liquid separation equipment of livestock and poultry dry feces, its structure is as shown in Figure 1: comprises shell 24, is provided with breakage unit, feed unit and solid-liquid separation unit in sequence from top to bottom in shell 24, solid-liquid separation unit. One side of the liquid separation unit is a pressure regulating unit.

The pressure regulating unit includes a baffle 12 for regulating the water content of solid feces in the solid-liquid separation unit.

The solid-liquid separation unit includes a first drive motor 1 fixedly connected to the housing 24, the first drive motor 1 drives the solid-liquid separation auger 19 to rotate through the first reducer 2, the solid-liquid separation auger 19 and the baffle plate 12 Cooperate to realize solid-liquid separation. The baffle plate 12 has a conical structure, and the housing 24 is provided with a conical opening adapted thereto.

The baffle plate 12 with a conical structure makes the contact between the baffle plate 12 and the end of the extrusion chamber a conical structure. The advantages are: 1. When it is closed, it can better seal the extrusion chamber; 2. When it is opened, it can be more Good control of pressure release improves the effect of solid-liquid separation.

The first drive motor 1 is a variable frequency motor, and the first reducer 2 is a helical gear reducer.

In order to improve the life of the first reducer 2 and prevent leakage, the first reducer 2 and the casing 24 are connected by bolts, and a labyrinth sealing mechanism is used at the connection part to prevent the liquid in the feces from flowing into the reducer, causing internal corrosion of the reducer and affecting the equipment. life.

The solid-liquid separation auger 19 includes two parts, the left part is a structure with fixed diameter and pitch, the right part is a helical structure with variable pitch, and the left and right parts are integrally formed. The diameter of the right part of the solid-liquid separation auger 19 and the pitch gradually decrease from the end receiving the power of the reducer to the other end. To achieve greater extrusion pressure on livestock and poultry manure, so the closer the manure is to the end of the extrusion chamber, the greater the pressure it receives and gather at the end;

Shown in Fig. 2 with reference to, damage unit comprises mixing box 7, and mixing box 7 top has the second drive motor 21 and feed inlet 8 that vertically arranges, and the second drive motor 21 drives screw gear shaft 28 (being main shaft) to rotate. The screw gear shaft 28 is fixedly connected with the screw gear 22 through the connecting frame 30 and the bolt group 29 . The rotary tooth 22 rotates to realize the stirring of the feces, and the stirred mixture becomes fluid. And because the edge of the helical tooth has a sharp blade, the helical tooth 22 can also break the mucous membrane substances on the surface of the feces.

The feeding unit includes a third driving motor 3 located at the bottom of the mixing box 7 and arranged laterally. The third driving motor 3 drives the quantitative feeding auger 6 inside the mixing box 7 to rotate through the second reducer 5 . By controlling the rotation speed of the third drive motor 3, the flow of fluid feces entering the input chamber 4 can be controlled to prevent feces from being blocked at the feed end.

The second reducer 5 is a cycloid reducer.

As shown in Fig. 4, the pressure adjustment unit includes an adjustment motor 14 fixedly connected to the housing, the adjustment motor 14 drives the screw rod 23 to rotate, one end of the screw rod 23 cooperates with the adjustment motor 14 through a thread pair, and the other end of the screw rod 23 is fixedly connected with a compression The spring 15, the compression spring 15 is fixedly connected with the baffle plate 12.

The adjusting motor 14 is preferably a servo motor, and the screw rod 23 runs through both ends of the servo motor.

The baffle 12 is embedded with a moisture sensor 13 .

The shell 24 is supported by the frame 16, and the frame 16 is provided with an electric control system 20. The moisture sensor 13 transmits signals to the electric control system 20, and the electric control system 20 controls the operation of all motors.

Referring to Fig. 3, the outer ring of the solid-liquid separation auger 19 has a plurality of moving pieces 10 and a plurality of static pieces 11, the two are arranged at intervals, the static pieces 11 are fixedly connected to the moving piece bracket 27, and the moving piece bracket 27 is fixed. connected inside the housing.

Above-mentioned moving piece 10 and static piece 11 constitute moving and static laminated screen mesh structure. The static piece 11 is fixed in the shell 24, and the moving piece 10 is arranged on both sides of the static piece 11. Both the moving piece and the static piece have a central through hole, and the solid-liquid separation auger 19 is inside the through hole. When the solid-liquid separation auger 19 rotates, it pushes the liquid feces to gather at the end of the extrusion chamber, and the liquid in the feces flows out through the gap between the moving piece 10 and the static piece 11. During this period, the moving piece 10 will rotate and move with the feces. Due to the movability of the moving piece 10, it not only ensures the extrusion and separation of the liquid in the feces, but also solves the disadvantage of the fixed screen mesh easily clogging the feces, reduces the frequency of cleaning the screen, and reduces the difficulty of cleaning.

The principle and steps of using this device for solid-liquid separation are:

A. Adjust the distance between the baffle plate 12 and the solid-liquid separation auger 19 according to design requirements.

B. The dry manure of livestock and poultry is put into the mixing box 7 through the feeding port 8, and mixed with water according to a ratio of 30% or less, and the second drive motor 21 drives the rotary tooth 22 to rotate, and the manure is fully mixed with water by stirring. Eventually it becomes fluid. Fluid stools have a water content of about 80%. Of course it can also be 75% or 70%.

C. Start the third driving motor 3, and the liquid feces enters the conveying chamber 4 of the solid-liquid separator evenly from right to left through the promotion of the quantitative feeding auger 6;

Start the first driving motor 1, and the solid-liquid separation auger 19 runs thereupon. The helical blades of the solid-liquid separation auger 19 near the 4 ends of the conveying chamber are of fixed pitch and radius, and mainly play the role of conveying fluid feces into the extrusion chamber 9. After entering the extrusion chamber 9, the excrement is transferred to As the discharge port 26 is pushed forward, due to the smaller and smaller screw pitch and spiral radius, and the innovative dynamic and static laminated screen, the fluid feces is continuously pushed forward and squeezed, and the water seeps from the gaps between many dynamic and static pieces. out.

Shown with reference to Fig. 3: the distance between adjacent two static plates 11 is constant, the moving plate 10 between the static plates 11 can move and rotate, but the maximum gap between the moving and static plates is limited, so it can The fluid feces plays a good role in solid-liquid separation, and at the same time, the mobility of the movable piece 10 also solves the shortcoming that the fixed screen is easily blocked, reduces the maintenance time and reduces the maintenance cost.

As the extrusion force of livestock and poultry manure at the end of the extrusion chamber increases, the moisture in the manure is forced out, flows into the shell through the static and dynamic laminated screen, and finally flows out through the water outlet 18, the water outlet 18 can be externally connected to the outlet hose 17 to introduce the liquid into the sedimentation tank for natural static sedimentation, and the water after sedimentation can be reused to save water resources.

The superficial liquid can be directly pumped into the mixing tank 7, mixed with dry feces, and stirred next time to realize recycling. The separated liquid can also be injected into the biogas digester to generate biogas and generate economic benefits.

At the end of the extrusion chamber 9, a moisture sensor 13 is installed on the baffle plate 12. The sensor probe is inserted into the solid feces to detect the moisture content in real time, and the data of the sensor is sent back to the electric control system 20, and the electric control system 20 controls and adjusts the motor through the moisture data. The positive and negative rotation of 14 further controls the movement of the screw 23, the screw 23 is connected with the compression spring 16, thereby controlling the pre-compression degree of the compression spring 16, changing the pressing force of the compression spring 16, and finally controlling the opening and closing of the baffle 12 The pressure realizes the adjustable water content of solid feces.

Because of the existence of the electronic control system 20, the entire system realizes closed-loop control, and finally realizes the control of the water content of the solid separation. When the water content reaches the preset value, the pressure of the baffle plate 12 will no longer increase, the baffle plate 12 will be pushed open, and the feces will be discharged from the equipment to complete the liquid and solid separation of livestock and poultry manure.

After adopting the above structure, the device can achieve high-efficiency solid-liquid separation of poultry feces by adding a small amount of water, and the separated water can be recycled, which greatly avoids the feces treatment process in the prior art by water flushing (soaking) A large amount of water resources are wasted and the moisture content of the treated feces is high.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Parts presented in detail and partially enlarged are prior art, and will not be repeated here. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and characteristics disclosed herein.

Claims (2)

1. A solid-liquid separation device for dry-cleaning manure of livestock and poultry, characterized in that it comprises a casing, and the casing is sequentially provided with a damage unit, a feeding unit and a solid-liquid separation unit from top to bottom; The damaged unit includes a main shaft, on which there are fixedly connected a plurality of helical teeth that take into account stirring and damage to the mucous membrane on the surface of feces, and the edges of the helical teeth have sharp blades; The solid-liquid separation unit includes a first drive motor fixedly connected to the shell, and the first drive motor drives the solid-liquid separation auger to rotate through the first reducer; after feces enter from the damaged unit, they are fed to the solid-liquid separation unit through the feed unit. The liquid separation unit performs solid-liquid separation. After separation, the fluid flows out from the water outlet, and the solid flows out from the outlet; There is a moving and static piece bracket inside the shell, and a plurality of static pieces are fixedly connected to the moving and static piece bracket, and a moving piece is placed between adjacent static pieces, and a solid-liquid separation auger runs through all the moving pieces and the static pieces; Wherein, the rotation of the solid-liquid separation auger pushes the fluid feces to gather towards the end of the extrusion chamber, and the moving piece rotates and moves with the feces; The solid-liquid separation auger is a variable-diameter variable-pitch helical structure, and the diameter and pitch of the solid-liquid separation auger gradually decrease from the end receiving the power of the reducer to the other end; The damaged unit includes a stirring box, and the top of the stirring box has a second driving motor and a feeding port arranged vertically, and the second driving motor drives the main shaft to rotate; The feeding unit includes a third driving motor positioned at the bottom of the mixing box and arranged laterally, and the third driving motor drives the quantitative feeding auger inside the mixing box to rotate through the second reducer; There is a baffle on the outside of the discharge end, one side of the baffle is connected with the spring and the screw in turn, the screw receives the torque of the adjusting motor to realize its own rotation, the other end of the screw is matched with the adjusting motor through the thread pair, and the adjusting motor is installed on the motor bracket; the baffle is a tapered structure; A moisture sensor is embedded in the baffle; the shell is supported by a frame, and an electric control system is installed on the frame, and the moisture sensor transmits a signal to the electric control system, and the electric control system controls the operation of all motors. 2. A method utilizing the solid-liquid separation device described in claim 1 to carry out solid-liquid separation of poultry manure, comprising the steps of: A. Adjust the distance between the baffle and the solid-liquid separation auger according to the design requirements; B. The poultry manure is mixed with water and then enters the damaged unit for stirring; C. The feed unit transports the stirred mixture to the solid-liquid separation unit; D. The first driving motor is started, and the mixture is transported and compressed by the solid-liquid separation auger to complete the solid-liquid separation.