阅读说明：本技术 一种畜禽粪污交变载荷压榨脱水设备及其脱水方法 (Squeezing and dewatering equipment for livestock and poultry manure alternating load and dewatering method thereof ) 是由 赵维松 陈永生 陈明江 韩柏和 王振伟 谢虎 吴爱兵 付菁菁 马标 许斌星 于 2021-08-26 设计创作，主要内容包括：本发明公开了种畜禽粪污交变载荷压榨脱水设备,包括固定支架,固定支架的顶面上设有主机外壳,主机外壳内设有定位轴,主机外壳的左侧面设置有驱动机构,主机外壳的右侧面设有挤压外壳,定位轴的右端部延伸至挤压外壳内右侧,且位于挤压外壳内在定位轴上设有压榨机构；挤压外壳的右端面设有通道筒,通道筒的底部下方设有固定筒,固定筒内设有烘干组件。本发明还公开了一种畜禽粪污交变载荷压榨脱水设备的脱水方法；本发明通过各机构组件的配合使用,能够在保证较低挤出物含水率前提下极大提高分离效率,并有效解决了设备挤压腔内易堵塞的问题,提高了设备可靠性。(The invention discloses squeezing and dewatering equipment for alternating load of livestock and poultry manure, which comprises a fixed support, wherein a main machine shell is arranged on the top surface of the fixed support, a positioning shaft is arranged in the main machine shell, a driving mechanism is arranged on the left side surface of the main machine shell, a squeezing shell is arranged on the right side surface of the main machine shell, the right end part of the positioning shaft extends to the inner right side of the squeezing shell, and a squeezing mechanism is arranged in the squeezing shell and is arranged on the positioning shaft; the right end face of the extrusion shell is provided with a channel cylinder, a fixed cylinder is arranged below the bottom of the channel cylinder, and a drying assembly is arranged in the fixed cylinder. The invention also discloses a dehydration method of the livestock and poultry manure alternating load squeezing dehydration equipment; according to the invention, through the matched use of each mechanism component, the separation efficiency can be greatly improved on the premise of ensuring the lower water content of the extrudate, the problem of easy blockage in the extrusion cavity of the equipment is effectively solved, and the reliability of the equipment is improved.)

1. The utility model provides a livestock and poultry excrement alternating load squeezes dewatering equipment, includes fixed bolster (16), its characterized in that: a main machine shell (25) is arranged on the top surface of the fixed support (16), a positioning shaft (21) is arranged in the main machine shell (25), a driving mechanism is arranged on the left side surface of the main machine shell (25), an extrusion shell (5) is arranged on the right side surface of the main machine shell (25), the right end part of the positioning shaft (21) extends to the inner right side of the extrusion shell (5), and a squeezing mechanism is arranged in the extrusion shell (5) and on the positioning shaft (21); the right-hand member face of extrusion shell (5) is equipped with the slag notch, the lower part of slag notch is equipped with a passageway section of thick bamboo (11), the top surface middle part through connection of slag notch and a passageway section of thick bamboo (11), the bottom below of a passageway section of thick bamboo (11) is equipped with solid fixed cylinder (12), be equipped with drying assembly in solid fixed cylinder (12).

2. The livestock and poultry manure alternating load pressing and dewatering equipment as claimed in claim 1, wherein: actuating mechanism includes reduction gear (2), servo motor (1), the left surface of host computer shell (25) is equipped with reduction gear (2), the left surface of reduction gear (2) is equipped with servo motor (1), the motor shaft tip of servo motor (1) and the coaxial hookup of power input end of reduction gear (2), the left side wall is equipped with shaft coupling (30) in host computer shell (25), the power take off end of reduction gear (2) and the coaxial hookup of the left end of shaft coupling (30), the right-hand member of shaft coupling (30) and the coaxial hookup of the left end of location axle (21).

3. The livestock and poultry manure alternating load pressing and dewatering equipment as claimed in claim 1, wherein: the feed inlet has been seted up to top surface one side of host computer shell (25), the inside of feed inlet is equipped with feed inlet (3), the side of feed inlet (3) is equipped with eccentric vibrator (4), just the vibration output of eccentric vibrator (4) is equipped with the arc vibration board, just the outer wall vibration contact of arc vibration board and feed inlet (3).

4. The livestock and poultry manure alternating load pressing and dewatering equipment as claimed in claim 1, wherein: squeezing mechanism includes screw axis (29), first helical blade (23), second helical blade (26), the cover is equipped with a screen cloth section of thick bamboo (22) on the inner wall of extrusion shell (5), the cover is equipped with load extrusion roller (29) on location axle (21), is located and is equipped with first helical blade (23) on host computer shell (25) on load extrusion roller (29), is located and is equipped with a plurality of second helical blade (26) on screen cloth section of thick bamboo (22) on load extrusion roller (29).

5. The livestock and poultry manure alternating load pressing and dewatering equipment as claimed in claim 4, wherein the squeezing and dewatering equipment comprises: be located the top surface top of load extrusion roller (29) and all be equipped with arc blade (24), every between adjacent second helical blade (26) arc blade (24) all inclines to crisscross rigid coupling on the top surface of load extrusion roller (29), the top surface top of load extrusion roller (29) is equipped with major axis (27), the both ends of major axis (27) all run through corresponding first helical blade (23), second helical blade (26) in proper order, are located screen cloth section of thick bamboo (22) bottom and are equipped with minor axis (28), the both ends of minor axis all run through corresponding second helical blade (26) in proper order.

6. The livestock and poultry manure alternating load pressing and dewatering equipment as claimed in claim 1, wherein: the right side wall in extrusion shell (5) is equipped with spring material stopping plate (6) above being located the slag notch, the back of spring material stopping plate (6) is equipped with a plurality of material stopping springs, every the outer end of material stopping spring all with extrude right side wall rigid coupling in shell (5).

7. The livestock and poultry manure alternating load pressing and dewatering equipment as claimed in claim 1, wherein: the front end portion is equipped with pneumatic cylinder (10) in passageway section of thick bamboo (11), the hydraulic stem tip of pneumatic cylinder (10) is equipped with compression plate (8), just compression plate (8) are equipped with spring damper (18) on solid fixed cylinder (12) along the inner wall longitudinal sliding of passageway section of thick bamboo (11) in the rear end portion rear that is located passageway section of thick bamboo (11), the front end of spring damper (18) is equipped with damping plate (19), just damping plate (19) slide along the back port of passageway section of thick bamboo (11).

8. The livestock and poultry manure alternating load pressing and dewatering equipment as claimed in claim 7, wherein: the drying component comprises a small motor (9) and electric heating metal blades (13), wherein a communicating hole is formed in the right side of the top surface of a fixed cylinder (12) below a spring damper (18), the small motor (9) is arranged on the right side of the inner side surface of the fixed cylinder (12), spiral conveying blades (20) are arranged at the end part of a motor shaft of the small motor (9) in the fixed cylinder (12), the electric heating metal blades (13) are uniformly distributed on the outer wall of the fixed cylinder (12), and a drying discharge hole (17) is formed in the left side surface of the fixed cylinder (12).

9. The livestock and poultry manure alternating load pressing and dewatering equipment as claimed in claim 8, wherein: the bottom surface middle part of extrusion shell (5) is equipped with play water drum (15), one side of play water drum (15) is equipped with exhaust pipe (7), the top surface left side of solid fixed cylinder (12) is equipped with negative pressure fan (14), the inlet end of negative pressure fan (14) and the top surface middle part through connection of solid fixed cylinder (12), the exhaust end of negative pressure fan (14) and the middle part through connection of exhaust pipe (7), just play water drum (15) is connected to solid fixed cylinder (12) top surface, the other end to the one end of exhaust pipe (7).

10. The dehydration method of livestock and poultry manure alternating load pressing dehydration equipment as claimed in any one of claims 1 to 9, characterized by comprising the following steps:

firstly, each electrical element is electrically connected with an external power supply through a power line, livestock manure materials are pumped into a main machine shell (25) through a feeding cylinder (3), and the materials with high viscosity and poor fluidity are vibrated and pressed down under the action of an eccentric vibrator (4);

step two, a motor shaft of the servo motor (1) drives a coupler (30) to synchronously rotate through a speed reducer (2), so as to drive a positioning shaft (21) and a load extrusion roller (29), further drive a first spiral blade (23), a second spiral blade (26) and an arc-shaped blade (24) to synchronously rotate, a material entering a host machine shell (25) enters an extrusion shell (5) under the spiral extrusion of the first spiral blade (23), and under the extrusion operation of the second spiral blade (26) and the arc-shaped blade (24), moisture in the material flows to a water outlet barrel (15) and an exhaust pipe (7) along a screen cylinder (22);

step three, when the load extrusion roller (29) rotates, the long shaft (27) and the short shaft (28) are driven to synchronously rotate, the materials on the inner walls of the main machine shell (25) and the screen cylinder (22) are scraped, the materials after extrusion and drainage are pushed backwards, and enter the middle part in the channel cylinder (11) through a slag outlet under the action of the spring material baffle plate (6);

fourthly, controlling a hydraulic rod of the hydraulic cylinder (10) to push the compression plate (8) to do reciprocating motion, driving the materials to carry out secondary dehydration operation under the action of the spring damper (18) and the damping plate (19), and meanwhile, as the materials are more and more accumulated in the channel barrel (11), the materials enter the fixed barrel (12) along the rear end opening of the channel barrel (11) through the communication hole;

fifthly, materials in the fixed cylinder (12) are heated and dried through the electric heating metal blades (13), a motor shaft of the small motor (9) drives the spiral conveying blades (20) to synchronously rotate, and the materials are driven to be discharged along a drying discharge hole (17) under the action of the spiral conveying blades (20);

and step six, in the process of heating and drying the inside of the fixed cylinder (12), a large amount of water vapor is generated, and under the action of the negative pressure fan (14), the large amount of water vapor is driven to enter the exhaust pipe (7) along the negative pressure fan (14) and finally discharged into the sewage pool.

Technical Field

The invention relates to the technical field of livestock and poultry manure treatment, in particular to livestock and poultry manure alternating load squeezing and dewatering equipment and a dewatering method thereof.

Background

With the continuous development of domestic breeding industry, the larger the breeding scale of a plurality of livestock and poultry is, the more abundant nutrient components and trace elements are contained in the livestock and poultry manure, and the economic benefit can be improved if the livestock and poultry manure is converted into organic fertilizer; on the contrary, the environment is seriously polluted, and the epidemic diseases of livestock and poultry can be caused and even spread to human diseases.

The existing livestock and poultry manure extrusion dehydration equipment has the following defects:

1. the structure is too simple, a continuous spiral auger is mostly adopted to be matched with a screen mesh for squeezing and dewatering, materials in an extrusion cavity are continuously compressed and move forwards under the continuous pushing action of a spiral blade, solid-liquid separation is finally realized, but physical adhesion is easily caused in the extrusion cavity, so that the normal operation of equipment is blocked;

2. the key link for realizing dehydration by a common continuous screw is at the discharging end, and the region has no spiral blades, and mainly depends on the squeezing dehydration among filter cakes; the continuous screw that present market widely used spiral extrusion separating centrifuge all adopted basically has multiple forms such as equidistance constant diameter, displacement constant diameter, equidistance reducing, displacement reducing, its extrusion chamber pressure variation curve all is approximate to the straight line, be linear increasing trend from material feed end to discharge end pressure, be one-level linear pressurization squeeze dehydration, the pressurization mode is single, can only carry out single squeeze dehydration, the dehydration effect is not thorough, the material moisture content after the dehydration is higher, generally more than 70%, be unfavorable for follow-up utilization, along with the increase of time, easily breed the bacterium, cause secondary pollution.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides livestock and poultry manure alternating load squeezing and dewatering equipment.

In order to solve the problems in the prior art, the invention adopts the following technical scheme:

a squeezing and dewatering device for livestock and poultry excrement alternating load comprises a fixed support, wherein a main machine shell is arranged on the top surface of the fixed support, a positioning shaft is arranged in the main machine shell, a driving mechanism is arranged on the left side surface of the main machine shell, an extruding shell is arranged on the right side surface of the main machine shell, the right end part of the positioning shaft extends to the right side in the extruding shell, and a squeezing mechanism is arranged in the extruding shell and arranged on the positioning shaft; the right-hand member face of extrusion shell is equipped with the slag notch, the lower part of slag notch is equipped with a passageway section of thick bamboo, the top surface middle part through connection of slag notch and a passageway section of thick bamboo, the bottom below of a passageway section of thick bamboo is equipped with the solid fixed cylinder, be equipped with the stoving subassembly in the solid fixed cylinder.

Preferably, actuating mechanism includes reduction gear, servo motor, the left surface of host computer shell is equipped with the reduction gear, the left surface of reduction gear is equipped with servo motor, servo motor's motor shaft tip and the coaxial hookup of the power input end of reduction gear, the left side wall is equipped with the shaft coupling in the host computer shell, the power take off end of reduction gear and the coaxial hookup of the left end of shaft coupling, the right-hand member of shaft coupling and the coaxial hookup of the left end of location axle.

Preferably, a feed inlet is formed in one side of the top surface of the host shell, a feed inlet is formed in the feed inlet, an eccentric vibrator is arranged on the side edge of the feed inlet, an arc-shaped vibrating plate is arranged at the vibration output end of the eccentric vibrator, and the arc-shaped vibrating plate is in vibration contact with the outer wall of the feed inlet.

Preferably, the squeezing mechanism comprises a screw shaft, a first helical blade and a second helical blade, a screen cylinder is sleeved on the inner wall of the squeezing shell, a load squeezing roller is sleeved on the positioning shaft, the first helical blade is arranged on the load squeezing roller in the host shell, and the second helical blade is arranged on the load squeezing roller in the screen cylinder.

Preferably, the top surface top that is located load extrusion roller all is equipped with arc blade, every between adjacent second helical blade arc blade all the crisscross rigid coupling in slant of arc blade is on load extrusion roller's top surface, load extrusion roller's top surface top is equipped with the major axis, the both ends of major axis all run through corresponding first helical blade, second helical blade in proper order, and the bottom is equipped with the minor axis in being located screen cylinder, the both ends of minor axis all run through corresponding second helical blade in proper order.

Preferably, a spring material stopping plate is arranged on the right side wall in the extrusion shell above the slag outlet, a plurality of material stopping springs are arranged on the back surface of the spring material stopping plate, and the outer end of each material stopping spring is fixedly connected with the right side wall in the extrusion shell.

Preferably, a hydraulic cylinder is arranged at the front end part in the channel cylinder, a compression plate is arranged at the end part of a hydraulic rod of the hydraulic cylinder, the compression plate longitudinally slides along the inner wall of the channel cylinder, a spring damper is arranged on the fixed cylinder behind the rear end part of the channel cylinder, a damping plate is arranged at the front end of the spring damper, and the damping plate slides along the rear port of the channel cylinder.

Preferably, the stoving subassembly includes small-size motor, electrical heating metal vane, and the intercommunicating pore has been seted up on the top surface right side of a fixed cylinder in the below that is located spring damper, the right flank is equipped with small-size motor in the fixed cylinder, and the motor shaft tip that is located the inherent small-size motor of fixed cylinder is equipped with the defeated material blade of spiral, the equipartition is equipped with electrical heating metal vane on the outer wall of fixed cylinder, the left surface of fixed cylinder is equipped with the stoving discharge gate.

Preferably, the bottom surface middle part of extrusion shell is equipped with the play water drum, one side of play water drum is equipped with the exhaust pipe, the top surface left side of fixed cylinder is equipped with negative-pressure air fan, negative-pressure air fan's inlet end and the top surface middle part through connection of fixed cylinder, negative-pressure air fan's exhaust end and the middle part through connection of exhaust pipe, just the play water drum is connected to fixed cylinder top surface, the other end is connected to the one end of exhaust pipe.

The invention also provides a dehydration method of the livestock and poultry manure alternating load squeezing dehydration equipment, which comprises the following steps:

step one, each electrical element is electrically connected with an external power supply through a power line respectively, livestock manure materials are pumped into a host shell through a feeding cylinder, and the materials with high viscosity and poor fluidity are vibrated and pressed down under the action of an eccentric vibrator;

step two, a motor shaft of the servo motor drives a coupler to synchronously rotate through a speed reducer, so as to drive a positioning shaft and a load extrusion roller, further drive a first helical blade, a second helical blade and an arc-shaped blade to synchronously rotate, the material entering the shell of the main machine enters the extrusion shell under the helical extrusion of the first helical blade, and under the extrusion operation of the second helical blade and the arc-shaped blade, the moisture in the material flows to a water outlet barrel and a steam exhaust pipe along a screen cylinder;

when the load extrusion roller rotates, the long shaft and the short shaft are driven to synchronously rotate, the materials on the shell of the main machine and the inner wall of the screen cylinder are scraped, the materials after extrusion and drainage are pushed backwards, and enter the middle part in the channel cylinder through the slag outlet under the action of the spring material baffle plate;

fourthly, controlling a hydraulic rod of the hydraulic cylinder to push the compression plate to do reciprocating motion, driving the material to perform secondary dehydration operation under the action of the spring damper and the damping plate, and meanwhile, as the material is more and more accumulated in the channel cylinder, the material enters the fixed cylinder along the rear end opening of the channel cylinder through the communication hole;

fifthly, heating and drying the materials in the fixed cylinder through the electric heating metal blades, driving the spiral conveying blades to synchronously rotate by a motor shaft of the small motor, and driving the materials to be discharged along a drying discharge hole under the action of the spiral conveying blades;

and step six, in the process of heating and drying the inside of the fixed cylinder, a large amount of water vapor is generated, and under the action of the negative pressure fan, the large amount of water vapor is driven to enter the steam exhaust pipe along the negative pressure fan and finally discharged into the sewage tank.

Compared with the prior art, the invention has the beneficial effects that:

1. in the invention, arc-shaped blades are arranged between the adjacent second spiral blades above the top surface of the load extrusion roller, so that the forward movement of materials is promoted; in addition, the stirring shaft is arranged in the direction of the spiral shaft, so that materials in the whole extrusion cavity are stirred, the blockage caused by material viscosity and overstock is prevented, and the problem that the alternating load squeezing dehydration is easy to block is solved.

2. In the invention, the filter cake on the positioning shaft can effectively prevent small-particle feces from flowing away along with liquid through the screen mesh, so that more solid substances are successfully intercepted, and the solid-liquid separation is more thorough; in addition, multi-stage squeezing dehydration is adopted, the nonlinear alternating load of a multiple squeezing area is constructed, the squeezing dehydration is equivalent to the superposed action effect of a plurality of continuous spiral squeezing dehydration, the obvious effects of 'squeezing to dry' and 'squeezing to fast' are achieved, and the thorough dehydration of materials is realized; the water content of the dehydrated material is low, and secondary pollution caused by bacterial breeding is avoided.

In conclusion, the invention solves the problem of poor livestock manure dehydration effect by matching the mechanism components, can greatly improve the separation efficiency on the premise of ensuring the lower water content of the extrudate, realizes the dehydration effect of 'squeezing to dry' and 'squeezing to fast', effectively solves the problem of easy blockage in the extrusion cavity of the equipment, and improves the reliability of the equipment.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a right side view of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;

FIG. 5 is a schematic cross-sectional front view of a press mechanism of the present invention;

FIG. 6 is a schematic left side cross-sectional view of a press mechanism of the present invention;

FIG. 7 is a graph of the operational load of the present invention;

FIG. 8 is a schematic view of the dehydration process of the present invention;

number in the figure: the device comprises a servo motor 1, a speed reducer 2, a feeding barrel 3, an eccentric vibrator 4, an extrusion shell 5, a spring material stopping plate 6, an exhaust pipe 7, a compression plate 8, a small motor 9, a hydraulic cylinder 10, a channel barrel 11, a fixed barrel 12, an electric heating metal blade 13, a negative pressure fan 14, a water outlet barrel 15, a fixed support 16, a drying discharge hole 17, a spring damper 18, a damping plate 19, a spiral material conveying blade 20, a positioning shaft 21, a screen cylinder 22, a first spiral blade 23, an arc-shaped blade 24, a main machine shell 25, a second spiral blade 26, a long shaft 27, a short shaft 28, a load extrusion roller 29 and a coupler 30.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

The first embodiment is as follows: the embodiment provides squeezing and dewatering equipment for alternating loads of livestock and poultry excrement, which comprises a fixed support 16, a main machine shell 25 is arranged on the top surface of the fixed support 16, a transversely placed positioning shaft 21 is arranged in the main machine shell 25, a driving mechanism is arranged on the left side surface of the main machine shell 25, a squeezing shell 5 which is in through connection with the right side surface of the main machine shell 25, the right end part of the positioning shaft 21 extends to the inner right side of the squeezing shell 5, and a squeezing mechanism is arranged in the squeezing shell 5 and arranged on the positioning shaft 21; the right-hand member face of extrusion shell 5 is equipped with the slag notch, and the lower part of slag notch is equipped with a passageway section of thick bamboo 11 of vertically placing, and the top surface middle part through connection of slag notch and a passageway section of thick bamboo 11 is equipped with the solid fixed cylinder 12 that link up horizontal rigid coupling below the bottom of a passageway section of thick bamboo 11, is equipped with the stoving subassembly in the solid fixed cylinder 12.

In the invention, the driving mechanism comprises a speed reducer 2 and a servo motor 1, the speed reducer 2 is arranged on the left side surface of a host shell 25, the servo motor 1 is arranged on the left side surface of the speed reducer 2, the end part of a motor shaft of the servo motor 1 is coaxially connected with the power input end of the speed reducer 2, a shaft coupling 30 is arranged on the left side wall in the host shell 25, the power output end of the speed reducer 2 is coaxially connected with the left end of the shaft coupling 30, the right end of the shaft coupling 30 is coaxially connected with the left end of a positioning shaft 21, and the motor shaft of the servo motor 1 drives the shaft coupling 30 to synchronously rotate through the speed reducer 2 so as to drive the positioning shaft 21 and a load extrusion roller 29.

According to the invention, a feeding hole is formed in one side of the top surface of the main machine shell 25, a feeding hole 3 which is communicated and fixedly connected with the feeding hole is formed in the feeding hole, an eccentric vibrator 4 is arranged on the side edge of the feeding hole 3, an arc vibrating plate is arranged at the vibration output end of the eccentric vibrator 4 and is in vibration contact with the outer wall of the feeding hole 3, livestock manure materials are poured into the main machine shell 25 through the feeding barrel 3, the arc plate vibrates up and down under the action of the eccentric vibrator 4, the arc plate is about to be attached to the outer edge of the spiral blade 23 at the moment when the downward movement speed of the arc plate is zero, the materials are pressed into the middle of the spiral blade, forced feeding is realized, and the phenomenon that the materials are accumulated on the inner wall of the feeding barrel 3 is avoided.

In the invention, a hydraulic cylinder 10 is arranged at the front end part in a channel cylinder 11, a compression plate 8 is arranged at the end part of a hydraulic rod of the hydraulic cylinder 10, the compression plate 8 longitudinally slides along the inner wall of the channel cylinder 11, a spring damper 18 is arranged on a fixed cylinder 12 behind the rear end part of the channel cylinder 11, a damping plate 19 is arranged at the front end of the spring damper 18, and the damping plate 19 slides along the rear port of the channel cylinder 11; the hydraulic rod of the control hydraulic cylinder 10 pushes the compression plate 8 to do reciprocating motion, under the action of the spring damper 18 and the damping plate 19, the materials are driven to perform secondary dehydration operation, and along with more and more materials are accumulated in the channel barrel 11, the materials enter the fixed barrel 12 along the rear end opening of the channel barrel 11 through the communication hole.

In the invention, the drying component comprises a small motor 9 and electric heating metal blades 13, a communicating hole is arranged on the right side of the top surface of a fixed cylinder 12 below a spring damper 18, the small motor 9 is arranged on the right side surface in the fixed cylinder 12, spiral conveying blades 20 are arranged at the end part of a motor shaft of the small motor 9 in the fixed cylinder 12, the electric heating metal blades 13 are uniformly distributed on the outer wall of the fixed cylinder 12, and a drying discharge hole 17 is arranged on the left side surface of the fixed cylinder 12; the materials in the fixed cylinder 12 are heated and dried through the electric heating metal blades 13, the motor shaft of the small motor 9 drives the spiral conveying blades 20 to synchronously rotate, and the materials are driven to be discharged along the drying discharge port 17 under the action of the spiral conveying blades 20.

In the invention, the middle part of the bottom surface of the extrusion shell 5 is provided with a water outlet barrel 15 which is fixedly connected in a penetrating way, one side of the water outlet barrel 15 is provided with a steam exhaust pipe 7 which is connected in a penetrating way, the left side of the top surface of the fixed barrel 12 is provided with a negative pressure fan 14, the air inlet end of the negative pressure fan 14 is connected with the middle part of the top surface of the fixed barrel 12 in a penetrating way, the air outlet end of the negative pressure fan 14 is connected with the middle part of the steam exhaust pipe 7 in a penetrating way, and one end of the steam exhaust pipe 7 is connected with the top surface of the fixed barrel 12, and the other end of the steam exhaust pipe is connected with the water outlet barrel 15; in the process of heating and drying the inside of the fixed cylinder 12, a large amount of water vapor is generated, and under the action of the negative pressure fan 14, the large amount of water vapor is driven to enter the exhaust pipe 7 along the negative pressure fan 14 and finally discharged into the sewage tank.

Example two: in the first embodiment, there are also problems that the screen cylinder is inconvenient to convey material and squeezing dewatering is not complete, so on the basis of the first embodiment, the first embodiment further includes:

in the invention, the squeezing mechanism comprises a screw shaft 29, a first screw blade 23 and a second screw blade 26, a screen cylinder 22 which is concentrically and fixedly connected is sleeved on the inner wall of a squeezing shell 5, a load squeezing roller 29 which is coaxially and fixedly connected is sleeved on a positioning shaft 21, a common continuous first screw blade 23 is arranged on the load squeezing roller 29 in a host shell 25, and a plurality of second screw blades 26 which are discontinuously and alternately arranged are arranged on the load squeezing roller 29 in the screen cylinder 22; the load extrusion roller 29 drives the first helical blade 23, the second helical blade 26 and the arc-shaped blade 24 to synchronously rotate, and the material entering the main machine shell 25 enters the extrusion shell 5 under the helical extrusion of the first helical blade 23 and under the extrusion operation of the second helical blade 26 and the arc-shaped blade 24.

In the invention, arc-shaped blades 24 are arranged between adjacent second spiral blades 26 above the top surface of a load extrusion roller 29, each arc-shaped blade 24 is fixedly connected to the top surface of the load extrusion roller 29 in an obliquely staggered manner, a transversely placed long shaft 27 is arranged above the top surface of the load extrusion roller 29, two ends of the long shaft 27 sequentially penetrate through the corresponding first spiral blade 23 and second spiral blade 26, a transversely suspended short shaft 28 is arranged at the bottom in a screen cylinder 22, two ends of the short shaft sequentially penetrate through the corresponding second spiral blade 26, a spring stopping plate 6 is arranged on the right side wall in an extrusion shell 5 above a slag outlet, the back surface of the spring stopping plate 6 is provided with a plurality of stopping springs, and the outer end of each stopping spring is fixedly connected with the right side wall in the extrusion shell 5; when the load extrusion roller 29 rotates, the long shaft 27 and the short shaft 28 are driven to synchronously rotate, materials on the inner walls of the main machine shell 25 and the screen cylinder 22 are hung on the wall, the materials are prevented from being blocked due to adhesion and overstock, the materials after extrusion and drainage are pushed backwards, and the materials enter the middle part of the channel cylinder 11 through the slag outlet under the action of the spring material baffle plate 6.

Aiming at the problem of incomplete extrusion and dehydration, the materials in the first helical blade 23 are pushed to move forward, the working principle of the continuous screw extrusion separator is consistent with that of a common continuous screw extrusion separator, the difference is that the materials reach the positioning shaft 21 without a helical surface after leaving the area of the first helical blade 23, the materials are not retained due to no external force action, when the materials are continuously dehydrated and become filter cakes with certain compactness, the materials pushed by the first helical blade 23 at the front end force the filter cakes on the positioning shaft 21 to move forward to the next second helical blade 26 and arc-shaped blade 24 area by virtue of the compression action of the materials, the iterative reciprocating motion is carried out, load distribution with an alternating rule is constructed in the extrusion cavity, the pressure at a slag outlet reaches a peak value, the compactness and the dryness reach the peak value, and the water content is lowest; the invention constructs alternating load through the spiral auger structure;

the alternating load press dewatering has three advantages:

(1) the material is in discontinuous continuous forward motion of 'stop-and-go and stop-and-go' in the extrusion cavity, and the motion characteristic of continuous forward motion of the material in the traditional continuous spiral auger is changed, so that the continuous spiral auger is suitable for operation at a high rotating speed, and the working efficiency is greatly improved on the premise of ensuring the water content of an extrudate;

(2) the filter cake on the positioning shaft 21 can effectively prevent small-particle manure from flowing away along with liquid through the screen, so that more solid substances are successfully intercepted, the solid-liquid separation is more thorough, and the retention time of the material in the area is longer, namely the dehydration time is long, more water is removed, and the water content of an extrudate is further reduced;

(3) the multi-stage squeezing dehydration is realized, a multi-squeezing area is constructed by a special spiral auger structure, a nonlinear alternating load is constructed, the axial pressure in a squeezing cavity is in an alternating increasing change rule of ascending first, descending then ascending and descending, and the load is in an alternating iterative increasing change trend; the motion form and the dehydration property of the materials in the extrusion cavity are changed, and the materials are in spiral iteration propulsion non-continuous forward motion; the squeezing dehydration is equivalent to the superposed effect of a plurality of continuous spiral squeezing dehydration, and has the obvious effects of 'squeezing to dry' and 'squeezing to be quick'.

Aiming at the problems that the filter cake on the positioning shaft 21 has insufficient forward power and poor fluidity and is easy to block under complex working conditions, so that normal dehydration cannot be realized;

in the invention, firstly, arc-shaped blades 24 are arranged between adjacent second spiral blades 26 above the top surface of the load extrusion roller 29, and each arc-shaped blade 24 is fixedly connected to the top surface of the load extrusion roller 29 in an obliquely staggered manner, so that the forward movement of the material is promoted; secondly, two stirring shafts, namely a long shaft 27 and a short shaft 28, are arranged in the direction of the spiral shaft and are used for stirring the materials in the whole extrusion cavity, so that the blockage caused by the viscosity and the overstock of the materials is prevented, and the problems of poor flowability and easy blockage of the alternating load squeezing dehydration are solved by the two means.

Example three: referring to fig. 8, in this embodiment, the present invention further provides a dewatering method for a livestock and poultry manure alternating load press dewatering device, including the following steps:

firstly, a servo motor 1, an eccentric vibrator 4, a small motor 9, a hydraulic cylinder 10, an electric heating metal blade 13 and a negative pressure fan 14 are respectively and electrically connected with an external power supply through power lines, the eccentric vibrator 4 is started, livestock manure materials are pumped into a main machine shell 25 through a feeding cylinder 3, the materials with high viscosity and poor fluidity are vibrated and pressed downwards under the action of the eccentric vibrator 4, and the phenomenon that the materials are accumulated on the inner wall of the feeding cylinder 3 is avoided;

step two, starting the servo motor 1, driving a coupler 30 to synchronously rotate by a motor shaft of the servo motor 1 through a speed reducer 2, further driving a positioning shaft 21 and a load extrusion roller 29, further driving a first helical blade 23, a second helical blade 26 and an arc-shaped blade 24 to synchronously rotate, allowing the material entering a host machine shell 25 to enter an extrusion shell 5 under the helical extrusion of the first helical blade 23, and allowing the water in the material to flow to a water outlet barrel 15 and a steam exhaust pipe 7 along a screen barrel 22 under the extrusion operation of the second helical blade 26 and the arc-shaped blade 24;

step three, when the load extrusion roller 29 rotates, the long shaft 27 and the short shaft 28 are driven to synchronously rotate, the materials on the inner walls of the host machine shell 25 and the screen cylinder 22 are scraped, the blockage caused by the adhesion and overstock of the materials is prevented, the materials after extrusion drainage are pushed backwards, and the materials enter the middle part in the channel cylinder 11 through the slag outlet under the action of the spring material baffle plate 6;

step four, starting the hydraulic cylinder 10, controlling a hydraulic rod of the hydraulic cylinder 10 to push the compression plate 8 to do reciprocating motion, driving the material to perform secondary dehydration operation under the action of the spring damper 18 and the damping plate 19, and meanwhile, as the material is more and more accumulated in the channel barrel 11, the material enters the fixed barrel 12 along the rear port of the channel barrel 11 through the communication hole;

step five, starting the electric heating metal blade 13, heating and drying the materials in the fixed cylinder 12 through the electric heating metal blade 13, starting the small motor 9, driving the spiral material conveying blade 20 to synchronously rotate by a motor shaft of the small motor 9, and driving the materials to be discharged along a drying discharge hole 17 under the action of the spiral material conveying blade 20;

and step six, in the process of heating and drying the inside of the fixed cylinder 12, a large amount of water vapor is generated, the negative pressure fan 14 is started, and under the action of the negative pressure fan 14, the large amount of water vapor is driven to enter the exhaust pipe 7 along the negative pressure fan 14 and finally discharged into the sewage pool.

According to the invention, a pressure load change curve similar to a step-shaped alternating change is constructed, referring to fig. 7, the area enclosed by the curve and an X axis is the energy produced by pressure acting, and the area difference delta P shows that the energy produced by the alternating load and the traditional first-stage linear pressurizing load under the same working condition is more, and the acting is more, so that the invention has the effects of drying and quickly squeezing.

The invention solves the problem of poor excrement dehydration effect of livestock by matching the components of each mechanism, can greatly improve the separation efficiency on the premise of ensuring the lower water content of extrudate, effectively solves the problem of easy blockage in the extrusion cavity of equipment, and improves the reliability of the equipment.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.