Chicken manure extrusion dehydration equipment and intelligent regulation and control method thereof

Abstract

The invention relates to the technical field of chicken manure treatment, in particular to chicken manure extrusion dehydration equipment and an intelligent regulation and control method thereof. The chicken manure extrusion dehydration equipment comprises an extrusion dehydration equipment body, a transmission mechanism, a screw extruder, a backwashing device, a pressure sensor, a humidity sensor and a controller. The extrusion dewatering equipment body is provided with an extrusion cavity, and the extrusion cavity is used for feeding through a feeding valve and is also used for discharging through a first discharging valve and a second discharging valve respectively. And the controller is used for starting spiral extrusion when the feeding valve is opened. And the controller is also used for judging whether the humidity is less than a set humidity threshold value, if so, opening the discharge valve I, otherwise, opening the discharge valve II and the transmission mechanism to simultaneously drive the screw extruder to accelerate extrusion dehydration. And the controller is also used for closing the feeding valve and the screw extruder and starting the backwashing device while judging that the pressure is not less than the set pressure threshold value. According to the scheme, the chicken manure extruded and dehydrated by the chicken manure extruding and dehydrating equipment can meet the composting requirement, and the utilization rate of the chicken manure is increased.

Description

Technical Field

[0001] This invention relates to the field of chicken manure treatment technology, specifically to a chicken manure extrusion and dewatering device and its intelligent control method. Background Technology

[0002] In chicken farming, the short intestines of chickens lead to incomplete digestion and utilization of ingested feed, resulting in the excretion of a large amount of nutrients in their feces. Therefore, chicken manure has the highest nutrient content among all poultry and livestock manure. Chicken manure is generally rich in nitrogen, phosphorus, potassium, and various trace elements, and contains a large amount of organic matter. It is also easily composted, fermented, and dried, making it suitable for use as organic fertilizer in agricultural production. However, the first step in turning chicken manure into organic fertilizer is dehydration. Traditional dehydration equipment often encounters problems where fibers and impurities in the manure easily entangle the filter screen or clog the discharge port. This necessitates frequent machine shutdowns for cleaning, reducing dehydration efficiency. Furthermore, existing dehydration equipment lacks real-time monitoring of the manure's condition during dehydration. Combined with the sensitivity of traditional dehydration equipment to initial moisture content, the moisture content of dehydrated chicken manure often exceeds 40%, rendering it unsuitable for direct composting or energy production. Summary of the Invention

[0003] To address the technical problem that existing dehydration equipment cannot intelligently control the state during the dehydration process, resulting in chicken manure having a moisture content that does not meet composting requirements, this invention provides a chicken manure extrusion dehydration device and its intelligent control method.

[0004] This invention is achieved using the following technical solution: a chicken manure extrusion and dewatering device, comprising an extrusion and dewatering device body, a transmission mechanism, a screw extruder, a backwashing device, a pressure sensor, a humidity sensor, and a controller. The extrusion and dewatering device body has an extrusion chamber, which receives feed through a feed valve and discharges through discharge valve one and discharge valve two respectively. The transmission mechanism is used to transmit the discharge output controlled by discharge valve two to the feed input controlled by the feed valve. The screw extruder is used to extrude and dewater the chicken manure in the extrusion chamber. The backwashing device is used to backwash the extrusion chamber. The pressure sensor is used to detect the pressure inside the extrusion chamber. The humidity sensor is used to detect the humidity after extrusion and dewatering. The controller is used to start the screw extruder when the feed valve is open; it is also used to determine whether the humidity is less than a set humidity threshold; if so, discharge valve one is opened; otherwise, discharge valve two is opened and the transmission mechanism simultaneously drives the screw extruder to accelerate extrusion and dewatering; it is also used to close the feed valve and the screw extruder simultaneously and start the backwashing device when the pressure is determined to be not less than a set pressure threshold.

[0005] As a further improvement of the present invention, the chicken manure extrusion dewatering equipment also includes a frame, on which the extrusion dewatering equipment body is mounted. The extrusion dewatering equipment body includes an inner shell and an outer shell sleeved outside the inner shell, with an extrusion chamber disposed within the inner shell. A cavity is formed between the inner shell and the outer shell, and the inner shell is provided with filter holes communicating with the cavity. The outer shell vertically contracts downward from the side closest to the inner shell to form a liquid outlet, and the liquid dewatered in the extrusion chamber enters the cavity through the filter holes and is discharged through the liquid outlet.

[0006] As a further improvement of the present invention, the chicken manure extrusion and dewatering equipment also includes an alarm, and the controller is also used to drive the alarm when it is determined that the pressure is not less than the set pressure threshold.

[0007] As a further improvement of the present invention, the chicken manure extrusion and dewatering equipment also includes a dry material collection box, a dry material temporary storage box, and a liquid collection box. The dry material collection box is connected to the extrusion chamber. Discharge valve one is used to control the opening and closing of the extrusion chamber and the dry material collection box, and discharge valve two is used to control the opening and closing of the extrusion chamber and the dry material temporary storage box. The liquid collection box is connected to the extrusion chamber through a liquid outlet.

[0008] As a further improvement of the present invention, the backwashing device includes a flushing pump and multiple backwashing nozzles, all of which are installed on the inner wall of the outer casing and face the filter holes; the flushing pump is used to deliver cleaning fluid to the backwashing nozzles to achieve backwashing of the filter holes on the inner casing; the controller is used to control the start and stop of the flushing pump.

[0009] As a further improvement of the present invention, the liquid collection tank is also provided with a multi-layer filter assembly, which is used to filter the liquid entering the liquid collection tank; the flushing pump is used to transport the filtered liquid to the backwash nozzle.

[0010] As a further improvement of the present invention, the multi-layer filter assembly is a multi-layer filter screen, and the pore size of the multi-layer filter screen gradually decreases from the liquid inlet to the liquid outlet of the liquid collection tank.

[0011] As a further improvement of the present invention, the screw extruder includes a drive unit, a rotating shaft, and multiple screw blades. The rotating shaft is installed in the inner housing along the horizontal direction of the extrusion chamber, and the multiple screw blades are installed on the rotating shaft at intervals along the horizontal direction. The drive unit drives the screw blades to rotate through the rotating shaft, thereby extruding and dehydrating the chicken manure in the extrusion chamber. The controller controls the rotational speed of the rotating shaft through the drive unit.

[0012] As a further improvement of the present invention, the diameter of the multiple spiral blades gradually decreases from the feed inlet to the discharge outlet.

[0013] This invention also provides an intelligent control method for a chicken manure extrusion and dewatering device, which employs the chicken manure extrusion and dewatering device described above. The intelligent control method includes the following steps: When the feed valve is open, the screw extruder is started. It is determined whether the humidity is less than a set humidity threshold; if so, discharge valve one is opened; otherwise, discharge valve two and the transmission mechanism are opened simultaneously to drive the screw extruder to accelerate extrusion and dewatering. When the pressure is determined to be not less than a set pressure threshold, the feed valve is closed and the screw extruder is started simultaneously with the backwashing device.

[0014] The technical solution provided by this invention has the following beneficial effects:

[0015] (1) This invention provides a chicken manure dewatering device, which includes a dewatering device body, a pressure sensor, a humidity sensor, and a controller. When the pressure value in the extrusion chamber is greater than or equal to a set pressure threshold, the controller closes the feed inlet and the screw extruder and starts the backwashing device. The backwashing device can backwash the extrusion chamber in a timely manner to prevent blockage and damage to the screw extruder, thereby protecting the screw extruder and increasing the continuous working time of the screw extruder, thus improving the overall efficiency of the chicken manure dewatering device. The controller can also determine the moisture content of the extruded chicken manure by humidity when the pressure value in the extrusion chamber is less than the set pressure threshold. If the moisture content of the dewatered chicken manure does not meet the requirements, the controller can open the discharge port 2 and transport the dewatered dry material back to the extrusion chamber for re-extrusion through the transmission mechanism. It can also discharge the dewatered chicken manure through the discharge port 1 when the moisture content meets the requirements. Thus, the chicken manure dewatered by the chicken manure dewatering device in this solution can meet the requirements for composting and improve the utilization rate of chicken manure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of a chicken manure extrusion and dewatering device provided in Embodiment 1 of the present invention.

[0017] Figure 2 This is a flowchart illustrating the process of dehydrating chicken manure during compression in Embodiment 1 of the present invention.

[0018] Figure 3 This is a flowchart of the intelligent control method for the chicken manure extrusion and dewatering equipment provided in Embodiment 2 of the present invention.

[0019] The markings in the diagram are as follows: 1. Feed inlet; 2. Discharge outlet 1; 3. Extrusion chamber; 4. Screw extruder; 41. Drive component; 42. Shaft; 43. Screw blade; 5. Frame; 61. Inner shell; 62. Outer shell; 63. Liquid outlet; 7. Liquid collection tank. Detailed Implementation

[0020] The present invention will now be further described in conjunction with specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0021] In the description of this invention, it should be noted that directional terms such as "center," "lateral," "longitudinal," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific scope of protection of this invention. The terms "first," "second," etc., in the specification and claims of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. The terms "comprising" and "having," and any variations thereof, in the specification and claims of this invention, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0022] Example 1

[0023] This embodiment provides a chicken manure compression and dewatering device, such as... Figure 1 and Figure 2As shown, it includes a dewatering extrusion unit, a pressure sensor, a humidity sensor, and a controller. The dewatering extrusion unit has an inlet 1, an outlet 2, an outlet 3, a dewatering chamber 3, a backwashing device, and a conveying mechanism. One end of the dewatering chamber 3 is connected to the inlet 1, and the other end is connected to both outlets 2 and 2. A screw extruder 4 for dewatering chicken manure is installed inside the dewatering chamber 3. A feed valve is installed at the inlet 1 to control its opening and closing. An outlet valve is installed at outlet 2 to control its opening and closing. An outlet valve is installed at outlet 2 to control its opening and closing. The backwashing device is used to backwash the dewatering chamber 3. The conveying mechanism is used to transport the material discharged from outlet 2 to inlet 1 when outlet 2 is open. A pressure sensor can be installed inside the dewatering chamber 3 to detect the pressure within it. A humidity sensor can be installed inside the extrusion chamber 3 near the discharge port 2. The humidity sensor is used to detect the pressure of the dry material after extrusion and dewatering. The controller is electrically connected to the feed valve, discharge valve 1, discharge valve 2, transmission mechanism, pressure sensor, humidity sensor, and screw extruder. In this embodiment, discharge port 2 and feed port 1 can be connected by a pipe. The controller is used to open the feed valve and screw extruder 4 when the extrusion and dewatering equipment body is fed. Chicken manure that needs to be extruded and dewatered can enter the extrusion chamber 3 through the feed valve, and the screw extruder 4 can perform extrusion and dewatering operation on the chicken manure in the extrusion chamber 3. The controller is also used to obtain the pressure value of the pressure sensor, and close the feed port 1 and screw extruder 4 and start the backwashing device when the pressure value of the pressure sensor is not less than the set pressure threshold. The controller is also used to acquire the humidity value from the humidity sensor when the pressure value of the pressure sensor is less than the set pressure threshold, and to open the discharge valve one when the humidity value is less than the set humidity threshold. At this time, under the action of the screw extruder 4, the squeezed and dehydrated chicken manure can be discharged out of the extrusion chamber 3 through the discharge port 2. The controller is also used to open the discharge valve two and the feed valve and start the transmission mechanism when the humidity value of the humidity sensor is not less than the set humidity threshold. The transmission mechanism is used to transport the chicken manure discharged from the discharge port two to the feed port 1. At the same time, the controller will also increase the speed of the screw extruder 4 to achieve secondary squeezing and dehydration of the chicken manure entering from the discharge port two.

[0024] The control logic of the entire controller is described below based on the actual dehydration process: First, the controller can simultaneously open the feed valve and the screw extruder 4. Chicken manure requiring dehydration can enter the extrusion chamber 3 through the feed inlet 1. The screw extruder 4 is used to dehydrate the chicken manure in the extrusion chamber 3. Simultaneously, the controller acquires the pressure value from the pressure sensor and makes the following judgment: If the pressure value from the pressure sensor is not less than the set pressure threshold, it indicates that the pressure in the extrusion chamber 3 is too high. Therefore, the controller closes the feed inlet 1 and the screw extruder 4 and simultaneously starts the backwashing device. The backwashing device backwashes the extrusion chamber 3. At the same time, the controller continues to acquire the pressure in the extrusion chamber 3. When the pressure value in the extrusion chamber 3 is less than the set pressure threshold, the controller closes the backwashing device and starts the screw extruder 4. After the screw extruder 4 has dehydrated the chicken manure for a period of time, the feed inlet 1 is reopened for feeding. The purpose of this setting is to reduce the pressure in the extrusion chamber 3, allowing the screw extruder 4 to process a portion of the chicken manure in the extrusion chamber 3 first. If the pressure value is less than the set pressure threshold, it indicates that the extrusion pressure in the extrusion chamber 3 is within the normal range, and the chicken manure can be dehydrated normally. At this time, the controller can acquire the humidity value from the humidity sensor and compare the acquired humidity value with the set humidity threshold, making the following judgments: If the humidity value is less than the set humidity threshold, the discharge valve one is opened, and under the push of the screw extruder 4, the chicken manure after being squeezed and dehydrated in the extrusion chamber 3 can be discharged through the discharge port one 2. If the humidity value is greater than or equal to the set humidity threshold, the controller opens the discharge valve two and starts the transmission mechanism, while simultaneously increasing the speed of the screw extruder 4. The transmission mechanism is used to transport the chicken manure discharged from the discharge port two back into the extrusion chamber 3 and increase the extrusion pressure on the chicken manure in the extrusion chamber 3 by increasing the speed of the screw conveyor, thereby further improving the extrusion and dehydration effect of the chicken manure in the extrusion chamber 3.

[0025] In this design, since the dehydrated chicken manure is intended for composting, a humidity sensor, controller, discharge valve one, discharge valve two, and transmission mechanism are used to monitor the moisture content of the chicken manure after it has been compressed by the screw extruder 4 in real time. If the moisture content exceeds the set standard, discharge valve two and the feed valve are opened, and the transmission mechanism is activated. The transmission mechanism re-feeds the chicken manure discharged from discharge port two back into the compression chamber 3. Simultaneously, the controller increases the rotational speed of the screw extruder 4 to increase the compression force of the screw extruder 4 on the chicken manure in the compression chamber 3, thereby improving the compression effect. This design ensures that the chicken manure compressed by the compression chamber 3 will only be discharged from discharge port one when the moisture content reaches the set standard. If the moisture content does not meet the standard, it will be transported back to the compression chamber 3 via the transmission mechanism for cyclic compression and dehydration until the moisture content of the dehydrated chicken manure reaches the set requirement before being discharged from discharge port one. This ensures that the moisture content of the chicken manure discharged after dehydration through the compression process meets the requirements for composting, thereby improving the utilization rate of chicken manure. Specifically, in this scheme, humidity is detected by a humidity sensor to characterize the moisture content of the compressed chicken manure, and the moisture content can be set to 40%. In a preliminary experiment, a series of humidity sensors are used to collect humidity values ​​within the compression chamber 3 and the moisture content of the chicken manure at that humidity. These data are then compiled into a table or fitted to a curve. In actual use, the moisture content of the chicken manure can be obtained from the humidity values ​​measured by the humidity sensor and the fitted curve, or by looking up a table, thus achieving the purpose of detecting the moisture content of chicken manure using a humidity sensor.

[0026] The chicken manure dewatering equipment also includes an alarm. The controller activates the alarm when the pressure value detected by the pressure sensor is not less than a set pressure value. The alarm can sound a siren or emit a bright light. By setting up the alarm, staff can be promptly alerted to excessive pressure within the extrusion chamber 3. This allows staff to monitor the situation and, based on their experience, decide whether to shut down the entire chicken manure dewatering equipment to prevent accidents.

[0027] The chicken manure extrusion and dewatering equipment also includes a frame 5, on which the main body of the extrusion and dewatering equipment is mounted. The main body of the extrusion and dewatering equipment includes an inner shell 61 and an outer shell 62 fitted over the inner shell 61. An extrusion chamber 3 is formed inside the inner shell 61. One end of the inner shell 61 is connected to a feed inlet 1, and the other end is connected to two discharge outlets, one and two respectively. A screw extruder 4 is installed inside the inner shell 61. A cavity is formed between the inner shell 61 and the outer shell 62. The inner shell 61 has filter holes connecting to the cavity. The outer shell 62 vertically contracts downwards from the side closest to the inner shell 61 to form a liquid outlet 63. One end of the cavity is connected to the extrusion chamber 3 through the filter holes, and the other end is connected to the liquid outlet 63. The liquid dewatered in the extrusion chamber 3 enters the cavity through the filter holes and is discharged through the liquid outlet 63. Chicken manure dehydrated by the screw extruder 4 in the extrusion chamber 3 can flow into the chamber through the filter holes and be discharged from the liquid outlet 63 along the inner wall of the outer shell 62. Dry material dehydrated by the screw extruder 4 in the extrusion chamber 3 can be discharged through the discharge outlet 2 or the discharge outlet 2.

[0028] The chicken manure extrusion and dewatering equipment also includes a dry material collection box, a dry material temporary storage box, and a liquid collection box 7. The dry material collection box is connected to the extrusion chamber 3 via discharge port 2, the dry material temporary storage box is connected to the extrusion chamber 3 via discharge port 2, and the liquid collection box 7 is connected to the extrusion chamber 3 via discharge port 63. The dry material collection box, the dry material temporary storage box, and the liquid collection box 7 can all be connected to discharge port 2 and discharge port 2 via pipes, respectively. The chicken manure collected in the dry material collection box can be directly used for composting, while the chicken manure collected in the dry material temporary storage box can be transported back to the extrusion chamber 3 for further extrusion via a conveying mechanism. The liquid collection box 7 is used to collect the liquid after extrusion and dewatering in the extrusion chamber 3. By setting up these three boxes, the solid particles and liquid in the extruded and dewatered chicken manure can be collected separately, facilitating subsequent processing of the extruded chicken manure.

[0029] The backwashing device includes a flushing pump and multiple backwashing nozzles, all of which are installed on the inner wall of the housing 62 and face the filter holes. The flushing pump delivers cleaning fluid to the backwashing nozzles, which in turn backwash the filter holes on the inner housing 61. A controller is electrically connected to the flushing pump. The controller uses the pressure sensor's pressure value and closes the feed inlet 1 and the screw extruder 4 simultaneously when the pressure value is not less than a set pressure threshold. In practical applications, the flushing volume delivered by the pump each time can be set. After each flush, the pressure sensor's pressure value is collected and compared with the set pressure threshold. If the pressure sensor's pressure value is not less than the set pressure threshold, backwashing continues until the pressure sensor's pressure value is less than the set pressure threshold. When the pressure sensor's pressure value is less than the set pressure threshold, the pump is shut off and restarted, while the screw extruder 4 is started. The feed inlet 1 is reopened when the screw extruder 4's extrusion time reaches the set time interval.

[0030] The liquid collection tank 7 may also be equipped with a multi-layer filter assembly, which divides the liquid collection tank 7 into an inlet chamber and a collection chamber. The liquid entering through the inlet 1 is filtered by the multi-layer filter assembly and then stored in the collection chamber. A flushing pump can be connected to the collection chamber through a pipeline. The flushing pump is used to transport the filtered liquid in the collection chamber to the backwash nozzle. This setting enables the recycling of the liquid after chicken manure is squeezed and dehydrated, achieving the purpose of saving water resources. In addition, the flushing pump can also be connected to an external liquid storage tank and a chemical tank, respectively. This allows the liquid in the liquid collection tank 7 to be supplied to the backwash nozzle through the external liquid storage tank when the liquid is not much or is relatively turbid. It also allows the addition of certain chemicals (such as unblocking agents) through the chemical tank when flushing the inner shell 61 to accelerate the backwashing efficiency of the backwashing device. The multi-layer filter assembly can be a multi-layer filter screen, which is arranged sequentially from the inlet chamber to the collection chamber. The pore size of the multi-layer filter screen gradually decreases from the inlet chamber to the collection chamber.

[0031] The screw extruder 4 includes a drive unit 41, a rotating shaft 42, and multiple screw blades 43. The rotating shaft 42 is installed horizontally within the inner housing 61 along the extrusion chamber 3. The drive unit 41 is installed on the inner housing 61 and connected to the rotating shaft 42. The multiple screw blades 43 are installed horizontally at intervals on the rotating shaft 42. The drive unit 41 drives the screw blades 43 to rotate via the rotating shaft 42, thereby extruding and dehydrating the chicken manure in the extrusion chamber 3. The controller is electrically connected to the drive unit 41 and controls the rotational speed of the rotating shaft 42 through the drive unit 41. When the humidity value of the humidity sensor is greater than or equal to the set humidity threshold, the controller opens the discharge valve 2 and starts the transmission mechanism, while simultaneously increasing the rotational speed of the rotating shaft 42, thereby increasing the extrusion pressure of the screw extruder 4 and further improving the extrusion effect of the screw extruder 4.

[0032] Example 2

[0033] This embodiment provides an intelligent control method for chicken manure extrusion and dewatering equipment based on the chicken manure extrusion and dewatering equipment provided in Embodiment 1. Please refer to... Figure 3 The intelligent control method includes the following steps: The chicken manure to be treated is fed into the extrusion chamber 3 through the feed inlet 1, and the screw extruder 4 is started for extrusion. Simultaneously, the pressure value detected by the pressure sensor within the extrusion chamber 3 is acquired, and the following judgment is made:

[0034] If the pressure value obtained is not less than the pressure threshold set by the system, the feed inlet 1 and the screw extruder 4 will be closed and the backwashing device will be started at the same time.

[0035] If the obtained pressure value is less than the system's set pressure threshold, the backwashing device is shut off, and the feed inlet 1 and screw extruder 4 are opened to continue the extrusion and dehydration operation. The humidity value of the humidity sensor is obtained and the following judgment is made: if the humidity value is less than the system's set humidity threshold, the discharge valve 1 is opened; otherwise, the discharge valve 2 is opened and the transmission mechanism is started, while the speed of the screw extruder 4 is increased.

[0036] The aforementioned intelligent control method effectively manages the chicken manure extrusion and dewatering equipment. When the pressure in the extrusion chamber 3 exceeds or equals the set pressure threshold, the feed inlet 1 and the screw extruder 4 are closed, and the backwashing device is activated, thus protecting the screw extruder 4. When the pressure in the extrusion chamber 3 falls below the set pressure threshold, the moisture content of the extruded chicken manure is determined by humidity. If the moisture content of the dewatered chicken manure does not meet the requirements, the discharge port 2 can be opened, and the dewatered material can be transported back to the extrusion chamber 3 via a conveying mechanism for further extrusion. Conversely, when the moisture content of the dewatered chicken manure meets the requirements, it can be discharged through discharge port 2. This ensures that the chicken manure dewatered by the equipment meets composting requirements, improving the utilization rate of chicken manure. Furthermore, this intelligent control method automates the control of the chicken manure extrusion and dewatering equipment, improving work efficiency.

[0037] The basic principles, main features, and advantages of this invention have been described above. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made without departing from the spirit and scope of the invention, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection claimed by this invention is defined by the appended claims and their equivalents.

Claims

1. A chicken manure extrusion and dewatering device, characterized in that, It includes: The body of the extrusion dewatering equipment is provided with an extrusion chamber (3). The extrusion chamber (3) is fed through the feed valve and discharged through the discharge valve one and the discharge valve two respectively. The transmission mechanism is used to transmit the material output controlled by the material valve to the material input controlled by the feed valve; Screw extruder (4) is used to extrude and dehydrate chicken manure in the extrusion chamber (3); A backwashing device is used to backwash the extrusion chamber (3); A pressure sensor is used to detect the pressure inside the extrusion chamber (3); A humidity sensor is used to detect the humidity of chicken manure after it has been squeezed and dehydrated. The controller is used to start the screw extruder (4) when the feed valve is opened; it is also used to determine whether the humidity is less than the set humidity threshold. If it is, the discharge valve one is opened; otherwise, the discharge valve two and the transmission mechanism are opened to drive the screw extruder (4) to speed up the extrusion and dewatering; it is also used to close the feed valve and the screw extruder (4) and start the backwashing device when the pressure is not less than the set pressure threshold.

2. The chicken manure extrusion and dewatering equipment as described in claim 1, characterized in that, The chicken manure extrusion dewatering equipment also includes a frame (5), and the extrusion dewatering equipment body is installed on the frame (5); the extrusion dewatering equipment body includes an inner shell (61) and an outer shell (62) sleeved outside the inner shell (61), and the extrusion chamber (3) is disposed inside the inner shell (61); a cavity is formed between the inner shell (61) and the outer shell (62), and the inner shell (61) is provided with filter holes that communicate with the cavity; the outer shell (62) forms a liquid outlet (63) by vertically contracting downward from the side close to the inner shell (61), and the liquid after extrusion dewatering in the extrusion chamber (3) enters the cavity through the filter holes and is discharged through the liquid outlet (63).

3. The chicken manure extrusion and dewatering equipment as described in claim 1, characterized in that, The chicken manure extrusion and dewatering equipment also includes an alarm, and the controller is also used to activate the alarm when it is determined that the pressure is not less than a set pressure threshold.

4. The chicken manure extrusion and dewatering equipment as described in claim 2, characterized in that, The chicken manure extrusion and dewatering equipment also includes a dry material collection box, a dry material temporary storage box, and a liquid collection box (7); the dry material collection box is connected to the extrusion chamber (3), the discharge valve one is used to control the opening and closing between the extrusion chamber (3) and the dry material collection box, the discharge valve two is used to control the opening and closing between the extrusion chamber (3) and the dry material temporary storage box, and the liquid collection box (7) is connected to the extrusion chamber (3) through the liquid outlet (63).

5. The chicken manure extrusion and dewatering equipment as described in claim 2, characterized in that, The backwashing device includes a flushing pump and multiple backwashing nozzles, all of which are installed on the inner wall of the outer casing (62) and face the filter holes; the flushing pump is used to deliver cleaning fluid to the backwashing nozzles to achieve backwashing of the filter holes on the inner casing (61); the controller is used to control the start and stop of the flushing pump.

6. The chicken manure extrusion and dewatering equipment as described in claim 5, characterized in that, The liquid collection tank (7) is also equipped with a multi-layer filter assembly, which is used to filter the liquid entering the liquid collection tank (7); the flushing pump is used to transport the filtered liquid to the backwash nozzle.

7. The chicken manure extrusion and dewatering equipment as described in claim 6, characterized in that, The multi-layer filter assembly consists of multiple layers of filter screens, with the pore size of the filter screens gradually decreasing from the inlet to the outlet of the liquid collection tank.

8. The chicken manure extrusion and dewatering equipment as described in claim 2, characterized in that, The screw extruder (4) includes a drive unit (41), a rotating shaft (42), and multiple screw blades (43). The rotating shaft (42) is installed in the inner housing (61) along the horizontal direction of the extrusion chamber (3). The multiple screw blades (43) are installed on the rotating shaft (42) at intervals along the horizontal direction. The drive unit (41) drives the screw blades (43) to rotate through the rotating shaft (42), thereby realizing the extrusion and dehydration of chicken manure in the extrusion chamber (3). The controller controls the rotation speed of the rotating shaft (42) through the drive unit (41).

9. The chicken manure extrusion and dewatering equipment as described in claim 8, characterized in that, The diameter of the plurality of spiral blades (43) gradually decreases from the feed inlet (1) to the discharge outlet (2).

10. A method for intelligent control of a chicken manure extrusion and dewatering device, characterized in that, It employs the chicken manure extrusion and dewatering equipment as described in any one of claims 1-9, and the intelligent control method includes the following steps: Used to start the screw extruder (4) when the feed valve is opened; Determine whether the humidity is less than the set humidity threshold. If yes, open discharge valve one; otherwise, open discharge valve two and the transmission mechanism simultaneously to drive the screw extruder (4) to speed up the extrusion and dewatering. When the pressure is determined to be not less than the set pressure threshold, the feed valve and the screw extruder (4) are closed and the backwashing device is started at the same time.

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