CN221382082U - Cattle mattress material production system - Google Patents

Abstract

The utility model relates to the technical field of livestock raising, in particular to a cattle bedding production system, which comprises: the device comprises a biogas residue and biogas slurry pond, a solid-liquid separation device, a filter press and a biogas residue drying module, wherein the biogas residue drying module comprises a biogas residue drying roller; the biogas residue and biogas slurry pond is connected with a feed inlet of the solid-liquid separation device, a solid-liquid mixture outlet of the solid-liquid separation device is connected with a feed inlet of the filter press, a liquid outlet of the solid-liquid separation device is connected with the biogas slurry pond, and a slag outlet of the filter press is connected with a feed inlet of the biogas residue drying roller. The production system of the cattle mattress material is used for solving the defects of unstable padding quality and moisture content in the existing production process of the cattle mattress material in the prior art, efficiently reducing the moisture content of the cattle mattress material and improving the quality of the cattle mattress material.

Description

Cattle mattress material production system

Technical Field

The utility model relates to the technical field of livestock raising, in particular to a cattle bedding production system.

Background

At present, large and medium-scale dairy farms at home and abroad generally adopt cow dung to prepare cow mattress materials, and the cow dung can form comfortable, safe and environment-friendly cow mattress materials after high-temperature aerobic fermentation, so that the cow mattress materials have the characteristics of guaranteeing the health of cows, improving the comfort level of the cows in bed, reducing limb hoof diseases and facilitating the treatment of manure, and have remarkable economic, ecological and social benefits.

In the prior art, a solid-liquid separation and airing process or a solid-liquid separation and aerobic fermentation process and the like are generally adopted to produce the cattle bedding material. However, the production process has the defects of unstable quality, unstable water content, unstable microorganism inactivation, high investment and operation cost, higher failure rate, low automation degree and the like.

Thus, there is a need for a cattle bedding production system that addresses the above-described problems.

Disclosure of utility model

The utility model provides a cattle bed padding production system which is used for solving the defects of unstable padding quality and moisture content in the existing cattle bed padding production process in the prior art, efficiently reducing the moisture content of the cattle bed padding and improving the quality of the cattle bed padding.

The utility model provides a cattle bed padding production system, which comprises: the device comprises a biogas residue and biogas slurry pond, a solid-liquid separation device, a filter press and a biogas residue drying module, wherein the biogas residue drying module comprises a biogas residue drying roller;

The biogas residue and biogas slurry pond is connected with a feed inlet of the solid-liquid separation device, a solid-liquid mixture outlet of the solid-liquid separation device is connected with a feed inlet of the filter press, a liquid outlet of the solid-liquid separation device is connected with the biogas slurry pond, and a slag outlet of the filter press is connected with a feed inlet of the biogas residue drying roller.

According to the cattle mattress material production system provided by the utility model, the solid-liquid separation device comprises the feeding box and the screw extruder, wherein the feeding box is connected with the biogas residue and biogas liquid pool, the screw extruder is connected with the feeding box, and the slag outlet of the screw extruder is connected with the filter press.

According to the cattle bedding production system provided by the utility model, the water outlet of the screw extruder and the water outlet of the filter press are connected with the biogas slurry tank.

The cattle mattress material production system provided by the utility model further comprises a discharging conveyor, wherein the discharging conveyor is connected with a discharging port of the biogas residue drying roller.

According to the cattle mattress material production system provided by the utility model, the bottom of the discharging end of the discharging conveyor is provided with the fan.

According to the cattle mattress material production system provided by the utility model, the biogas residue drying module further comprises a hot blast stove, and an air outlet of the hot blast stove is connected with an air inlet of the biogas residue drying roller.

According to the cattle mattress material production system provided by the utility model, the biogas residue and biogas slurry pond is internally provided with the first conveying pump, the discharge port of the first conveying pump is provided with the feeding pipe, and the outlet end of the feeding pipe is connected with the feed inlet of the solid-liquid separation device.

The cattle bedding production system provided by the utility model further comprises a first liquid level meter which is suitable for monitoring the liquid level in the biogas residue and biogas slurry pond, and the first liquid level meter is in communication connection with the first conveying pump.

According to the cattle mattress material production system provided by the utility model, the biogas slurry tank is internally provided with the second conveying pump, and the liquid outlet of the second conveying pump is provided with the liquid outlet pipe.

The cattle bedding production system provided by the utility model further comprises a second liquid level meter which is suitable for monitoring the liquid level in the biogas slurry tank, and the second liquid level meter is in communication connection with the second conveying pump.

According to the cattle mattress material production system provided by the utility model, during production, biogas residue and biogas slurry mixture in the biogas residue and biogas slurry pond is conveyed into the solid-liquid separation device for primary solid-liquid separation treatment, biogas residues containing a small amount of biogas slurry after primary solid-liquid separation enter the filter press for secondary filter pressing treatment, part of biogas slurry in the biogas residues is removed again, the biogas residues after secondary filter pressing enter the biogas residue drying roller, meanwhile, hot air is introduced into the biogas residue drying roller, and the biogas residues can slowly move to the discharge port of the biogas residue drying roller and finally are discharged through the discharge port while the biogas residue drying roller rotates at a slow speed.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a bovine mattress material production system provided by an embodiment of the present utility model;

FIG. 2 is an enlarged schematic view of a portion of FIG. 1A;

Fig. 3 is a schematic view of a production process of a bovine mattress material production system according to an embodiment of the utility model.

Reference numerals:

1. A biogas residue and biogas slurry pool; 2. a biogas slurry pond; 3. a feed box; 4. biogas residue drying roller; 5. a first transfer pump; 6. a second transfer pump; 7. a feed pipe; 8. a liquid outlet pipe; 9. a first level gauge; 10. a second level gauge; 11. a biogas residue conveyor; 12. a screw extruder; 13. a filter press; 14. a discharge conveyor; 15. a blower; 16. and (5) hot blast stove.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Overview of the prior art:

In the prior art, a solid-liquid separation and airing process, a solid-liquid separation and aerobic fermentation process, a solid-liquid separation and drying process and the like are generally adopted to produce the cattle mattress material.

Wherein, the solid-liquid separation and airing process comprises the following steps: pumping the biogas residue and biogas slurry after anaerobic fermentation into a spiral extrusion type solid-liquid separator through a conveying pump, extruding the biogas residue and biogas slurry mixture forwards by a spiral, filtering out the biogas slurry through a screen mesh wrapped on the outer layer of the spiral, and realizing the separation of the biogas residue and the biogas slurry. The water content of the separated biogas residues is about 75%. Conveying the biogas residues to a biogas residue airing field through a forklift or a belt conveyor, uniformly paving the biogas residues through the forklift, airing the biogas residues, and reducing the water content in the biogas residues to 45-50% after 2-5 days of airing. Then collecting and temporarily storing, mixing lime for sterilization and returning to the cattle bed for utilization by a forklift. The technology adopts simple rough production, the quality of the produced cattle mattress is general, the microbial inactivation of the mattress is unstable, the moisture content of the mattress is unstable, the automation degree of the production process is low, the operation and maintenance cost of manpower and machinery is high, and the biogas residue airing process is greatly influenced by weather and air temperature.

Solid-liquid separation and aerobic fermentation process: pumping the biogas residue and biogas slurry after anaerobic fermentation into a spiral extrusion type solid-liquid separator through a conveying pump, extruding the biogas residue and biogas slurry mixture forwards by a spiral, filtering out the biogas slurry through a screen mesh wrapped on the outer layer of the spiral, and realizing the separation of the biogas residue and the biogas slurry. The water content of the separated biogas residues is about 75%, the biogas residues are regularly and quantitatively conveyed to the feeding end of the aerobic fermentation tank through a forklift or a belt conveyor, the biogas residues of a turning machine are arranged in the fermentation tank to be turned, the biogas residues in the fermentation tank are aerated by a matched aeration fan at regular time, the biogas residues are subjected to aerobic fermentation in the fermentation tank for 5 to 10 days, the biogas residues after fermentation are pushed to the discharge port of the fermentation tank by the biogas residues turning machine, the water content of padding produced after fermentation is reduced to 45 to 50%, and microorganisms are thoroughly inactivated so as to directly recycle the pad bed. The technology adopts the traditional aerobic fermentation technology, the produced cattle mattress has good quality, stable water content of the mattress, low failure rate and lower automation degree of the production process, but the operation and maintenance cost of manpower and machinery is slightly high, and the overall investment is higher.

The following describes the bovine mattress material production system provided by the present utility model with reference to fig. 1 to 3.

As shown in fig. 1, the present utility model provides a cattle bed padding production system, comprising: the device comprises a biogas residue and biogas slurry pond 1, a biogas slurry pond 2, a solid-liquid separation device, a filter press 13 and a biogas residue drying module, wherein the biogas residue drying module comprises a biogas residue drying roller 4; the biogas residue and biogas slurry pond 1 is connected with a feed inlet of a solid-liquid separation device, a solid-liquid mixture outlet of the solid-liquid separation device is connected with a feed inlet of a filter press 13, a liquid outlet of the solid-liquid separation device is connected with the biogas slurry pond 2, a slag outlet of the filter press is connected with a feed inlet of a biogas residue drying roller 4, and the height from the feed inlet of the biogas residue drying roller 4 to a discharge outlet of the biogas residue drying roller 4 is gradually reduced.

Specifically, in this embodiment, the biogas residue and biogas slurry tank 1 and the biogas slurry tank 2 are adjacently disposed, the biogas residue and biogas slurry tank 1 and the biogas slurry tank 2 are respectively provided with a first conveying pump 5 and a second conveying pump 6, the outlets of the first conveying pump 5 and the second conveying pump 6 are respectively provided with a feed pipe 7 and a liquid outlet pipe 8, the first conveying pump 5 can convey the biogas residue and biogas slurry mixture into the solid-liquid separation device through the feed pipe 7 for solid-liquid separation, and the second conveying pump 6 can convey the biogas slurry to the oxidation pond (or other set positions) through the liquid outlet pipe 8. Wherein, a first liquid level meter 9 and a second liquid level meter 10 are respectively arranged in the biogas residue and biogas liquid pool 1 and the biogas liquid pool 2.

Wherein, the biogas residue and biogas slurry tank 1 is a reinforced concrete structure, the tank is round or octagonal, the depth of the tank is 5 meters (the effective water depth in the tank is ensured), and the residence time is longer than 6 hours (the continuous and stable operation of subsequent process equipment is ensured).

The biogas slurry tank 2 is also in a reinforced concrete structure, the tank is round or octagonal (combined with the biogas residue and slurry tank 1), the tank depth is 5 meters (effective water depth in the tank is ensured), and the residence time is longer than 4 hours (continuous and stable operation of subsequent process equipment is ensured).

The filter press 13 mainly comprises an equipment body, a material distribution device, an automatic flushing system, a filter belt, an extrusion roller shaft, a speed reducing motor, a slag discharge trough, a water outlet device and the like, wherein biogas residues automatically enter the filter press 13 through a feed inlet to be subjected to filter pressing, and the biogas residues are filtered out of the filter belt through extrusion of the filter belt and the extrusion roller shaft, collected to the water outlet trough and finally discharged through a pipeline. The squeezed biogas residues are transmitted forwards through the roll shafts at the two ends of the filter belt until the biogas residues are discharged from the slag discharge trough. The filter press 13 of the present embodiment has a high automation level, low power consumption, and is suitable for continuous operation. Wherein, the key components such as the distributing device, the water receiving disc, the driving roller, the extruding roller and the like are made of stainless steel materials.

The biogas residue drying roller 4 adopts a carbon steel roller with the length of 16 meters and the diameter of 1.6 meters, the wall thickness of the roller is 20 mm, and a guide plate is arranged in the roller to ensure that the biogas residue rotates forwards along the wall of the roller, and simultaneously, the roller can also play a role in fully rolling and stirring the biogas residue in the roller and fully mixing hot air.

The first delivery pump 5 adopts a submersible sewage pump, which adopts a large-channel single-blade pit to block an impeller and the pit to block and prevent winding, and the blade is attached with a hard alloy cutter head, so that large particles and long fiber sundries can be cut and torn.

The second delivery pump 6 also adopts a submersible sewage pump, which adopts a large-channel single-blade pit to block an impeller and a pit to block and prevent winding, and the blades are attached with hard alloy cutter heads, so that large particles and long fiber sundries can be cut and torn.

In this embodiment, the top of the feeding box 3 of the solid-liquid separation device is provided with an overflow port, and the overflow port is connected with an overflow pipeline, and the overflow pipeline is used for refluxing the redundant biogas residue and biogas slurry mixture to the biogas residue and biogas slurry pond 1 so as to ensure continuous and stable operation of the whole system.

In this embodiment, the first liquid level gauge 9 and the first delivery pump 5 are automatically combined and controlled by a PLC automatic control program, and when the liquid level in the biogas residue and biogas slurry tank 1 reaches a preset value, the first delivery pump 5 can be controlled to automatically deliver the biogas residue and biogas slurry mixture to the solid-liquid separation device. The second liquid level meter 10 and the second conveying pump 6 are automatically combined and controlled, and when the liquid level in the biogas slurry tank 2 reaches a preset value, the second conveying pump 6 can be controlled to automatically convey the biogas slurry to an oxidation pond (or other set positions).

In the embodiment, a biogas residue conveyor 11 is arranged between the filter press and the biogas residue drying roller 4, so that biogas residues sent out by the filter press can be conveniently conveyed to the biogas residue drying roller 4 for drying treatment.

In this embodiment, temperature sensors are respectively disposed at the feed inlet, the middle part and the discharge outlet of the biogas residue drying drum 4, so as to monitor the biogas residue temperature of each part in the drying process in real time, and automatically adjust the rotation speed of the biogas residue drying drum 4 and the supply of hot air according to the temperature condition.

The production system of the cattle mattress material solves the defects of unstable padding quality and moisture content in the existing production process of the cattle mattress material in the prior art, can efficiently reduce the moisture content of the cattle mattress material, and obviously improves the quality of the cattle mattress material.

As shown in fig. 1, in the embodiment of the present utility model, the solid-liquid separation device comprises a feeding box 3 and a screw extruder 12, wherein the feeding box 3 is connected with a biogas residue and biogas slurry pond 1, the screw extruder 12 is connected with the feeding box 3, and a slag outlet of the screw extruder 12 is connected with a filter press 13. The biogas residue and biogas slurry mixture enters the feeding box 3 under the conveying action of the first conveying pump 5, the biogas residue and biogas slurry mixture in the feeding box 3 enters the screw extruder 12 for extrusion, the obtained biogas residue after extrusion is discharged to the filter press 13 through a slag outlet of the screw extruder, the biogas slurry is filtered out by a screen mesh in the screw extruder 12 and discharged into the biogas slurry pond 2, the biogas residue entering the filter press 13 is subjected to extrusion action of a multi-stage filter belt in the filter press 13, water in the biogas residue is subjected to filter pressing by the multi-stage filter belt, the biogas residue obtained after secondary filter pressing enters the biogas residue drying roller 4 through a discharge hole for drying treatment, and the filtered secondary biogas slurry flows into the biogas slurry pond 2 through a water outlet of the filter press 13. The biogas residue is subjected to two-stage filter pressing treatment by arranging the frontal screw extruder 12 and the filter press 13 in the filter press, so that most residual biogas slurry in the biogas residue can be removed, the water content of the biogas residue is further reduced, the energy consumption in a drying stage is reduced, the drying efficiency is improved, and the running cost is reduced.

Specifically, the solid-liquid separation device mainly comprises a feeding box 3, a mesh screen, a screw extruder 12, a speed reducing motor, a slag discharging and water discharging device and the like, wherein the biogas residue and biogas slurry mixture is conveyed into the feeding box 3 through a first conveying pump 5, enters the screw extruder 12 from the bottom of the feeding box 3, gradually pushes the biogas residue and biogas slurry mixture to the front of a machine body through the screw extruder 12, simultaneously continuously increases the pressure of the front end, forces moisture in the biogas residue and biogas slurry mixture to extrude out of the mesh screen under the action of side pressure belt filtration, and flows out of a drain pipe. The screw extruder 12 is continuous in operation, the biogas residue and biogas slurry mixture is continuously pumped into the machine body, the pressure at the front end is continuously increased, and when the pressure is large to a certain extent, slag can be pushed away, and biogas residues are extruded. The solid-liquid separation device has high automation level and low power consumption, and is suitable for continuous operation. Wherein, the key components of the screw extruder 12, the screen mesh and the like are made of stainless steel materials.

As shown in fig. 1 and 2, in the embodiment of the utility model, the cattle bedding production system further comprises a discharging conveyor 14, and the discharging conveyor 14 is connected with a discharging port of the biogas residue drying roller 4. By providing the discharge conveyor 14, the biogas residue obtained after the drying treatment can be transported to a designated position (such as a padding buffer shop) for storage.

In a further embodiment of the utility model, as shown in fig. 1 and 2, the bottom of the discharge end of the discharge conveyor 14 is provided with a fan 15 (e.g. an axial fan). Because the discharge temperature of the discharge conveyor 14 is relatively high (about 80 ℃), after the padding falls on the ground, the water content of the padding is increased when the temperature of the padding gradually decreases to the ambient temperature after buffering, and the water in the padding is condensed into water. According to the utility model, the fan 15 is arranged at the bottom of the discharge end of the discharge conveyor 14, so that the biogas residue can be subjected to blowing, cooling and moisture control treatment in the falling process, and the quality of padding is further improved.

As shown in fig. 1, in the embodiment of the utility model, the biogas residue drying module further comprises a hot blast stove 16, and an air outlet of the hot blast stove 16 is connected with an air inlet of the biogas residue drying roller 4. Through setting up hot-blast furnace 16, be convenient for when needs drying process to the hot-blast to marsh sediment stoving cylinder 4, and can control hot-blast temperature and the hot-blast volume that gets into in the marsh sediment stoving cylinder 4 according to the actual conditions. Specifically, in this embodiment, the air intake of the biogas residue drying roller 4 is located below the front side of the feed inlet of the biogas residue drying roller 4, and when feeding, hot air enters the biogas residue drying roller 4 from the air intake at the same time, so that the falling biogas residue can be blown away, heated and dried.

In the embodiment, the biogas residue drying module is a complete set of combined device, the process connection among the devices is smooth, the automation level is high, the one-key start and stop can be realized, and the continuous operation is suitable. The driving motor and the speed reducer adopted by the biogas residue drying roller are variable frequency motors, and the rotating speed of the biogas residue drying roller can be adjusted by adopting variable frequency control.

The processing principle of the cattle bedding production system provided by the utility model is specifically described below, and reference is made to fig. 1 and 2.

As shown in fig. 1, the biogas residues and the biogas slurry after anaerobic fermentation are buffered in a biogas residues and biogas slurry pond 1, a first conveying pump 5 and a first liquid level meter 9 are arranged in the biogas residues and biogas slurry pond 1, and the first conveying pump 5 and the first liquid level meter 9 are automatically combined and controlled, so that automatic start and stop can be realized according to the liquid level condition in the biogas residues and biogas slurry pond 1. When the liquid level in the biogas residue and biogas slurry pond 1 is detected to be higher than the preset height, the first conveying pump 5 conveys the biogas residue and biogas slurry mixture into the feeding box of the solid-liquid separation device for solid-liquid separation, the separated biogas residues containing a small amount of biogas slurry enter the extrusion screw from the bottom of the feeding box for extrusion, the extruded biogas residues are discharged from the slag outlet, the biogas slurry is filtered out through the inner screen of the screw extruder 12 and is discharged into the biogas slurry pond 2 through the water outlet of the screw extruder 12, the second conveying pump 6 and the second liquid level meter 10 are arranged in the biogas slurry pond 2, and the second conveying pump 6 and the second liquid level meter 10 are automatically combined and controlled, so that automatic start and stop can be realized according to the liquid level condition in the pond, and the biogas slurry is conveyed to the oxidation pond.

The biogas residues extruded by the solid-liquid separation device are discharged from a slag outlet and enter the filter press 13 through a feed inlet of the filter press 13, the water in the biogas residues is further removed under the extrusion action of a multi-stage filter belt in the filter press 13, and the secondary biogas slurry obtained by filter pressing flows into the biogas slurry pond 2 through a water outlet of the filter press 13. And the secondary biogas residue obtained by filter pressing enters a biogas residue drying device through a biogas residue conveyor 11 through a discharge hole of a filter press 13 for drying.

The secondary biogas residue obtained by filter pressing enters the biogas residue drying roller 4 through a discharge port of the filter press 13 and the biogas residue conveyor 11. In the hot blast stove 16, air is heated, hot air is introduced into the biogas residue drying roller 4 through a hot air connecting pipeline arranged between the hot blast stove 16 and the biogas residue drying roller 4, so that the just-entered biogas residue is blown away, heated and dried, the height from a feed inlet of the biogas residue drying roller 4 to a discharge outlet of the biogas residue drying roller 4 is gradually reduced, and when the biogas residue drying roller 4 rolls slowly, the biogas residue can roll along the inner wall of the biogas residue drying roller 4 towards the outlet direction, and finally falls to the discharge conveyor 14 through the discharge outlet of the biogas residue drying roller 4. The temperature of the biogas residue in the biogas residue drying roller 4 is gradually reduced along with forward pushing of the rotation of the biogas residue drying roller 4, and the temperature is less than 60 ℃ when reaching a discharge hole. The biogas residue that discharge conveyor 14 dropped the discharge gate of biogas residue stoving cylinder 4 is carried to the pad material buffer shop, is equipped with fan 15 in the bottom of discharge conveyor 14 discharge end, and the in-process that the biogas residue dropped ground, fan 15 can blow off it, cooling, accuse moisture, further promotes pad material quality.

The following describes the processing control principle of the cattle bedding production system provided by the utility model in detail, referring to fig. 1 and 2.

The top of the biogas residue and biogas slurry pond 1 is provided with a first liquid level meter 9 (such as a radar liquid level sensor) for monitoring the liquid level in the pond in real time, and the first liquid level meter and the first conveying pump 5 realize automatic control linkage operation through a PLC automatic control program, so that the first conveying pump 5 is ensured to be started and stopped according to the liquid level condition in the pond, and the automatic operation is realized.

In the solid-liquid separation device, an overflow port is arranged at the top of the feeding box 3, and redundant biogas residue and biogas slurry mixture is refluxed to the biogas residue and biogas slurry pool 1 through an overflow pipeline so as to ensure continuous and stable operation of the whole system. The solid-liquid separation device realizes linkage control with the first conveying pump 5 at the front end through a PLC program. For example: the solid-liquid separation device is started by signal transmission 30 seconds before the first conveying pump 5 is started; after the first transfer pump 5 is stopped for 1 minute, the solid-liquid separation device is controlled to stop.

The biogas residues after solid-liquid separation automatically fall into the filter press 13 to carry out secondary filter pressing of the biogas residues, and linkage control is realized through a PLC program and a front-end solid-liquid separation device. For example: the screw extruder 12 and the filter press 13 were started up 30s before the start of the solid-liquid separation apparatus, and after the solid-liquid separation apparatus was stopped for 1 minute, the screw extruder 12 and the filter press 13 were controlled to be stopped.

The biogas residue after the secondary filter pressing automatically falls into the biogas residue conveyor 11, so that the biogas residue obtained after the secondary filter pressing is conveyed into the biogas residue drying roller 4 for drying, the biogas residue drying roller 4 discharges to the discharging conveyor 14 to convey the dried biogas residue to the padding buffer, an axial flow fan is arranged at the bottom of the discharging end of the discharging conveyor 14, and the fallen biogas residue is blown away, cooled and moisture controlled, so that the quality of the padding is ensured. The hot blast stove 16 arranged at the front end of the biogas residue drying roller 4 provides a heat source for drying.

The whole drying process comprises the following steps: all the equipment such as the biogas residue conveyor 11, the biogas residue drying roller 4, the discharging conveyor 14, the fan 15, the hot blast stove 16 and the like are controlled in a linkage way according to the technological process by a PLC program. For example: 1 minute after the biogas residue conveyor 11 is started, starting the biogas residue drying roller 4 through signal transmission, starting the hot blast stove 16 while the biogas residue drying roller 4 is started, and starting the discharging conveyor 14 and the axial flow fan through signal transmission after 60 minutes after the biogas residue drying roller 4 is started; after the biogas residue conveyor 11 is stopped for 60 minutes, the biogas residue drying roller 4 and the hot blast stove 16 are stopped through signal transmission, and after the biogas residue drying roller 4 is started for 2 minutes, the discharging conveyor 14 and the axial flow fan are simultaneously stopped through signal transmission. Meanwhile, the operation condition of the whole set of drying device and the filter press at the front end realize linkage operation through a PLC program.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A cattle bedding production system, comprising: the device comprises a biogas residue and biogas slurry pond, a solid-liquid separation device, a filter press and a biogas residue drying module, wherein the biogas residue drying module comprises a biogas residue drying roller;

The biogas residue and biogas slurry pond is connected with a feed inlet of the solid-liquid separation device, a solid-liquid mixture outlet of the solid-liquid separation device is connected with a feed inlet of the filter press, a liquid outlet of the solid-liquid separation device is connected with the biogas slurry pond, and a slag outlet of the filter press is connected with a feed inlet of the biogas residue drying roller.

2. The bovine mattress material production system of claim 1, wherein said solid-liquid separation device comprises a feed tank and a screw extruder, said feed tank being connected to said biogas slurry pond, said screw extruder being connected to said feed tank, and a slag outlet of said screw extruder being connected to said filter press.

3. The bovine mattress material production system of claim 2, wherein the water outlet of said screw extruder and the water outlet of said filter press are both connected to said biogas slurry pond.

4. The bovine mattress material production system of claim 1, further comprising an outfeed conveyor connected to an outfeed of said biogas residue drying drum.

5. The bovine mattress material production system of claim 4, wherein a fan is provided at the bottom of the discharge end of said discharge conveyor.

6. The bovine mattress material production system of claim 1, wherein said biogas residue drying module further comprises a hot blast stove, an air outlet of said hot blast stove being connected to an air inlet of said biogas residue drying drum.

7. The cattle bedding production system according to any one of claims 1 to 6, wherein a first conveying pump is arranged in the biogas residue and biogas slurry tank, a material conveying pipe is arranged at a material outlet of the first conveying pump, and an outlet end of the material conveying pipe is connected with a material inlet of the solid-liquid separation device.

8. The bovine mattress material production system of claim 7, further comprising a first level gauge adapted to monitor a level of liquid within said biogas residue and biogas slurry tank, said first level gauge being in communication with said first transfer pump.

9. The bovine mattress material production system of any one of claims 1 to 6, wherein a second transfer pump is disposed in the biogas slurry tank, and a liquid outlet of the second transfer pump is provided with a liquid outlet pipe.

10. The bovine mattress material production system of claim 9, further comprising a second level gauge adapted to monitor a level of liquid in said biogas slurry tank, said second level gauge being in communication with said second transfer pump.