阅读说明：本技术 一种残膜回收用形变滚筒及其形变方法 (Deformation roller for residual film recovery and deformation method thereof ) 是由 刘保荣 于 2020-08-13 设计创作，主要内容包括：本发明属于农业机具领域,尤其是涉及一种残膜回收用形变滚筒,包括相互配合的固定筒与滚筒,所述滚筒围绕固定筒转动连接,所述滚筒外侧壁设有多个形变刺筒,所述形变刺筒内部设有第一空腔以及第二空腔,所述第一空腔将第二空腔进行包裹设置,所述第一空腔内部设有电流变液,所述第二空腔内固定有能够使得形变刺筒发生形变的热双金属片。本发明利用热双金属片受温度而发生形变以及电流变液受电场而相态发生改变的特点,实现形变刺筒刺穿地膜时将会处于弯曲状态,与地膜分离时将会处于直线形态,进而兼顾对于地膜的固定要求以及便于分离的要求。(The invention belongs to the field of agricultural equipment, and particularly relates to a deformation roller for residual film recovery, which comprises a fixed cylinder and a roller which are matched with each other, wherein the roller is rotatably connected around the fixed cylinder, the outer side wall of the roller is provided with a plurality of deformation thorn cylinders, a first cavity and a second cavity are arranged in the deformation thorn cylinders, the second cavity is wrapped by the first cavity, electrorheological fluid is arranged in the first cavity, and a thermal bimetallic strip capable of deforming the deformation thorn cylinders is fixed in the second cavity. The invention utilizes the characteristics that the thermal bimetallic strip is deformed by temperature and the electrorheological fluid is changed by an electric field, realizes that the deformed puncturing cylinder is in a bending state when puncturing the mulching film and is in a linear state when being separated from the mulching film, and further considers the fixing requirement on the mulching film and the requirement on convenient separation.)

1. The utility model provides a residual film is retrieved and is used deformation cylinder, is including the solid fixed cylinder (1) and cylinder (2) of mutually supporting, its characterized in that, cylinder (2) rotate around solid fixed cylinder (1) and connect, cylinder (2) lateral wall is equipped with a plurality of deformation and stings a section of thick bamboo (3), deformation stings a section of thick bamboo (3) inside and is equipped with first cavity (4) and second cavity (5), first cavity (4) wrap up second cavity (5) and set up, first cavity (4) inside is equipped with electrorheological fluids, second cavity (5) internal fixation has can make deformation sting section of thick bamboo (3) take place the thermal bimetallic strip (6) of deformation, the form change of electrorheological fluids is heated the temperature control of bimetallic strip (6), the temperature change of thermal bimetallic strip (6) is controlled by the rotational position of cylinder (2).

2. A deformable roll for residual film recycling according to claim 1, characterized in that one end of the thermal bimetallic strip (6) is connected to the circuit, and the other end of the thermal bimetallic strip (6) is provided with a magnetic switch (7) whose opening and closing are controlled by the position of the roll (2).

3. The deformation roller for residual film recycling according to claim 2, wherein the magnetic switch (7) comprises a fixed contact (71), a magnetic movable contact (72), a sliding groove (73) and a spring (74), the fixed contact (71) is fixedly connected with the thermal bimetallic strip (6), one side of the magnetic movable contact (72) close to the center of the roller (2) is connected with the sliding groove (73) through the spring (74), and the fixed cylinder (1) is fixedly connected with a permanent magnet (12) capable of pushing the magnetic movable contact (72) close to the fixed contact (71).

4. The deformation drum for residual film recycling according to claim 1, wherein the side wall of the thermal bimetallic strip (6) perpendicular to the rotation direction of the drum (2) is fixedly connected with the second cavity (5) through a filter screen, an air inlet (51) and an air outlet (52) are arranged in the second cavity (5), the air outlet (52) is communicated with the outside, and the air inlet (51) and the air outlet (52) are separated by the thermal bimetallic strip (6).

5. The deformation roller for residual film recycling according to claim 4, wherein an air chamber (11) is arranged in the fixed cylinder (1), and the air chamber (11) can perform air blowing and cooling on the fixed cylinder (1) through an air inlet (51).

6. The deformation roller for residual film recycling according to claim 1, wherein a capacitor (41) is arranged in the first cavity (4), the on/off of a circuit where the capacitor (41) is located is controlled by the temperature of the heated bimetallic strip (6), and the electrorheological fluid is located between two poles of the capacitor (41).

7. A deformation method of a deformation roller for residual film recycling according to any one of claims 1 to 6, characterized in that the method comprises the following steps:

s1, the thermal bimetallic strip (6) and the deformation pricking barrel (3) are in a linear state in a normal state, and the electrorheological fluid is in a liquid state;

s2, when the roller (2) drives the deformation thorn cylinder (3) to pass through the area where the permanent magnet (12) is located, current can pass through the thermal bimetallic strip (6) and the temperature of the thermal bimetallic strip (6) is increased, and the thermal bimetallic strip (6) can drive the deformation thorn cylinder (3) to deform;

s3, when the current disappears from the thermal bimetallic strip (6), the temperature of the thermal bimetallic strip (6) will rise to the highest, and at the moment, the capacitor (41) is connected into the circuit through a thermistor and the like;

s4, an electric field in the capacitor (41) enables the electrorheological fluid to be converted into a solid state, and then the electrorheological fluid supports the deformable piercing cylinder (3), so that the deformable piercing cylinder (3) has enough strength;

s5, the roller (2) continues to rotate, the air cavity (11) cools the thermal bimetallic strip (6) through air flow, and then the capacitor (41) is disconnected, electrorheological fluid is converted into liquid, the thermal bimetallic strip (6) drives the deformation pricking barrel (3) to be converted into a linear state together, and separation of the mulching film and the deformation pricking barrel (3) is facilitated.

Technical Field

The invention belongs to the field of agricultural machines and tools, and particularly relates to a deformation roller for residual film recovery and a deformation method thereof.

Background

The mulching film is usually used for covering the ground surface in modern agriculture, has the effects of reducing raindrop impact, preventing scouring and skinning formation, effectively reducing the evaporation of soil moisture, preserving soil moisture in dry weather and improving soil moisture after rain, promoting the absorption and growth and development of crops on the moisture, improving the utilization efficiency of the soil moisture, keeping the soil at proper temperature and humidity, slowing down the ground temperature, prolonging the duration, being beneficial to the decomposition and decomposition of fertilizers, improving the fertility of the soil and the like, but after the wide application of the mulching film, a large amount of mulching film is remained in the soil, and the residual mulching film in the soil can seriously influence the absorption of the root system of the crops on the moisture and the nutrients, thereby influencing the improvement of the yield of the crops.

At present, be equipped with the multiple machinery of retrieving to the plastic film, machine is retrieved to drum-type plastic film, can realize that the cylinder pierces the plastic film through the tooth on cylinder surface at rolling in-process, then upwards shed the plastic film at cylinder pivoted in-process and concentrate the collection, but the tooth on the present cylinder is the linear type, this kind of tooth can ensure that the plastic film can separate with the tooth well, but can appear the tooth and pierce the plastic film after relatively poor to the fixed effect of plastic film, the cylinder appears easily and punctures the plastic film after the plastic film and still stays the condition at the earth's surface, it is higher to lead to the hourglass rate of plastic film recovery, make the recovery effect of retrieving the machine relatively poor.

Therefore, we propose a deformation roller for residual film recycling and a deformation method thereof to solve the above problems.

Disclosure of Invention

The invention aims to solve the problems and provides a deformation roller for recovering residual mulching films and a deformation method thereof, wherein the deformation roller has better mulching film recovery effect.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a residual film is retrieved and is used deformation cylinder, is including the solid fixed cylinder and the cylinder of mutually supporting, the cylinder rotates around solid fixed cylinder to be connected, the cylinder lateral wall is equipped with a plurality of deformation and stings a section of thick bamboo, deformation thorn an inside first cavity and the second cavity of being equipped with, first cavity wraps up the setting with the second cavity, the inside electrorheological fluids that is equipped with of first cavity, the second cavity internal fixation has the hot bimetallic strip that can make deformation thorn a section of thick bamboo take place deformation, the form change of electrorheological fluids is heated the temperature control of bimetallic strip, the temperature change of hot bimetallic strip is controlled by the rotational position of cylinder.

In the above-mentioned deformation cylinder for plastic film residue is retrieved, hot bimetallic strip one end and circuit intercommunication setting, the hot bimetallic strip other end is equipped with opens and shuts and receives the magnetic switch of cylinder position control.

In the above deformation roller for residual film recycling, the magnetic switch is composed of a fixed contact, a magnetic movable contact, a sliding groove and a spring, the fixed contact is fixedly connected with the thermal bimetallic strip, one side of the magnetic movable contact, which is close to the center of the roller, is connected with the sliding groove through the spring, and the fixed cylinder is fixedly connected with a permanent magnet which can push the magnetic movable contact to be close to the fixed contact.

In foretell deformation cylinder for plastic film residue is retrieved, the lateral wall of the perpendicular cylinder rotation direction of hot bimetallic strip passes through filter screen and second cavity fixed connection, be equipped with air inlet and gas outlet in the second cavity, the gas outlet sets up with external intercommunication, air inlet and gas outlet are separated by hot bimetallic strip and are set up.

In the deformation roller for residual film recovery, an air cavity is arranged in the fixed cylinder, and the air cavity can realize air blowing and cooling on the fixed cylinder through an air inlet.

In the deformation roller for residual film recycling, a capacitor is arranged in the first cavity, the on-off state of a circuit where the capacitor is located is controlled by the temperature of the heated bimetallic strip, and the electrorheological fluid is located between the two electrodes of the capacitor.

The invention also discloses a deformation method of the deformation roller for residual film recovery, which comprises the following steps:

s1, the thermal bimetallic strip and the deformation pricking barrel are in a linear state in a normal state, and the electrorheological fluid is in a liquid state;

s2, when the roller drives the deformation thorn barrel to pass through the area where the permanent magnet is located, current can pass through the thermal bimetallic strip, the temperature of the thermal bimetallic strip is raised, and the thermal bimetallic strip drives the deformation thorn barrel to deform;

s3, when the current disappears from the thermal bimetallic strip, the temperature of the thermal bimetallic strip will rise to the highest, at this time, the capacitor will be connected into the circuit through the thermistor and the like;

s4, an electric field in the capacitor enables the electrorheological fluid to be converted into a solid state, and then the electrorheological fluid supports the deformed stabbing cylinder, so that the deformed stabbing cylinder has enough strength;

s5, the roller continues to rotate, the air cavity cools the thermal bimetallic strip through air flow, and then the capacitance is broken, the electrorheological fluid is converted into liquid, the thermal bimetallic strip drives the deformation pricking barrel to be converted into a linear state together, and the separation of the mulching film and the deformation pricking barrel is facilitated.

The invention has the beneficial effects that: the thermal bimetallic strip is in a linear structure in a normal state, the deformation thorn cylinder can keep the linear structure under the action of the thermal bimetallic strip, and the electrorheological fluid can be in a liquid state.

After the cylinder rotates and make the magnetism movable contact and the permanent magnet of deformation in stinging a section of thick bamboo cooperate, will make hot bimetallic strip communicate to the circuit in, the electric current of high strength will make hot bimetallic strip produce a large amount of heats and make self temperature rise in the twinkling of an eye through hot bimetallic strip, high temperature will make hot bimetallic strip deformation, and then realize driving deformation and sting a section of thick bamboo and bend deformation together, the hot bimetallic strip of high temperature will still make electric capacity place circuit switch-on, and then realize that electrorheological fluid will become solid-state under the effect of electric field, make deformation sting a section of thick bamboo have enough ground intensity to pierce through plastic film and ground.

The drum continues to rotate, the hot bimetallic strip is cooled through the air cavity, the hot bimetallic strip can be restored to a linear state, and after the temperature of the hot bimetallic strip is reduced, a circuit where the capacitor is located can be disconnected, so that the electrorheological fluid can be in a liquid state, and the deformed puncture cylinder can be changed into the linear state together, and the mulching film can be conveniently separated.

The invention has the outstanding characteristics that: the characteristics that the thermal bimetallic strip is deformed by temperature and the electrorheological fluid is changed by an electric field are utilized, so that the deformation puncturing cylinder can be in a bent state when puncturing the mulching film and can be in a linear state when being separated from the mulching film, and the fixing requirement on the mulching film and the requirement on convenient separation are taken into consideration.

Drawings

FIG. 1 is a schematic structural diagram of a side view of a deformation roller for residual film recycling and a device used in the deformation method thereof according to the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 2;

FIG. 4 is a schematic diagram of an electrical connection structure of the deformation roller for residual film recycling and the components in the deformation method thereof according to the present invention.

In the figure, 1 is a fixed cylinder, 11 is an air cavity, 12 is a permanent magnet, 2 is a roller, 3 is a deformation thorn cylinder, 31 is a needle end, 4 is a first cavity, 41 is a capacitor, 42 is a connecting block, 5 is a second cavity, 51 is an air inlet, 52 is an air outlet, 6 is a thermal bimetallic strip, 7 is a magnetic switch, 71 is a fixed contact, 72 is a magnetic movable contact, 73 is a sliding groove, and 74 is a spring.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

As shown in fig. 1-4, a deformable roller for plastic film residue recovery comprises a fixed cylinder 1 and a roller 2 which are matched with each other, wherein the fixed cylinder 1 is fixedly connected with a plastic film residue recovery vehicle, and the roller 2 rotates around the fixed cylinder 1 under the action of the plastic film residue recovery vehicle.

As shown in fig. 1, 2 lateral walls of cylinder are equipped with a plurality of deformation thorn section of thick bamboo 3, and deformation thorn section of thick bamboo 3 keeps away from one end lateral wall fixedly connected with needle end 31 of cylinder 2 for deformation thorn section of thick bamboo 3 can be more convenient impale earth and incomplete membrane, and deformation thorn section of thick bamboo 3 is inside to be equipped with first cavity 4 and second cavity 5.

The first cavity 4 wraps the second cavity 5, and electrorheological fluid is arranged inside the first cavity 4.

A capacitor 41 is arranged in the first cavity 4, and the electrorheological fluid is positioned between two poles of the capacitor 41.

The one end that cylinder 2 was kept away from to first cavity 4 is equipped with connecting block 42 for lateral wall is set up for fixed connection in the one end that cylinder 2 was kept away from to first cavity 4, and deformation thorn section of thick bamboo 3 can be through changing the outer wall that the inner wall of first cavity 4 was more convenient drives first cavity 4 and together change, and then realizes that deformation thorn section of thick bamboo 3 is more convenient to be crooked.

The second cavity 5 internal fixation has the hot bimetallic strip 6 that can make the deformation thorn section of thick bamboo 3 take place deformation, and hot bimetallic strip 6 has two-layer metal constitution that receives the temperature expansion rate difference, and two-layer metal is located perpendicular 2 rotation direction settings of cylinder respectively, and the metal that thermal expansion coefficient is high is located the one side of keeping away from 2 rotation direction of cylinder.

One end of the thermal bimetallic strip 6 is communicated with the circuit, and the other end of the thermal bimetallic strip 6 is provided with a magnetic switch 7 which is controlled by the position of the roller 2 to open and close.

The magnetic switch 7 is composed of a fixed contact 71, a magnetic movable contact 72, a slide groove 73, and a spring 74.

The fixed contact 71 is fixedly connected with the thermal bimetal 6, one side of the magnetic movable contact 72 close to the center of the roller 2 is connected with the sliding groove 73 through the spring 74,

when the fixed contact 71 contacts the magnetic movable contact 72, the thermal bimetal 6 is connected to the circuit.

The fixed cylinder 1 is fixedly connected with a permanent magnet 12 which can push the magnetic movable contact 72 to be close to the fixed contact 71.

When the roller 2 rotates to make the deformed spine 3 approach the permanent magnet 12, the permanent magnet 12 will push the magnetic moving contact 72 to move and contact the fixed contact 71, thereby communicating the thermal bimetallic strip 6 into the circuit.

The thermal bimetal 6 is provided with a thermistor, and the thermistor, the thermal bimetal 6 and the capacitor 41 are electrically connected and combined as shown in fig. 4, wherein the elastic switch is normally in an off state and can be controlled by the electromagnet.

The side wall of the thermal bimetallic strip 6 perpendicular to the rotation direction of the roller 2 is fixedly connected with the second cavity 5 through a filter screen, an air inlet 51 and an air outlet 52 are arranged in the second cavity 5, the air outlet 52 is communicated with the outside, and the air inlet 51 and the air outlet 52 are separated by the thermal bimetallic strip 6.

Be equipped with air cavity 11 in the solid fixed cylinder 1, be equipped with high pressurized air source in the air cavity 11, air cavity 11 can realize blowing the gas cooling to solid fixed cylinder 1 through air inlet 51.

When the drum 2 rotates to enable the air inlet 51 to be communicated with the air cavity 11, the air flow in the air cavity 11 can rapidly enter from the air inlet 51 and is discharged from the air outlet 52, and the high-speed air flow can rapidly take away the heat on the thermal bimetallic strip 6 through the thermal bimetallic strip 6, so that the thermal bimetallic strip 6 is cooled.

According to the invention, under a normal state, the thermal bimetallic strip 6 is in a straight line state at normal temperature, the circuit of the capacitor 41 is in a disconnected state, so that the electrorheological fluid is in a liquid state, and the thermal bimetallic strip 6 is used as a framework of the deformation puncture cylinder 3 to enable the deformation puncture cylinder 3 to be in a straight line state.

When the drum 2 rotates, the deformed pricking barrel 3 will be caused to go through the process of approaching the permanent magnet 12 and moving away from the permanent magnet 12, in which process the permanent magnet 12 will cause the magnetic moving contact 72 to contact the fixed contact 71, so that the thermal bimetal 6 is communicated into the electric circuit.

And then will have the heavy current to pass through hot bimetallic strip 6, and then realize that hot bimetallic strip 6 will heat up rapidly, and then realize that hot bimetallic strip 6 will make hot bimetallic strip 6 will be towards the less one side bending of coefficient of thermal expansion because the coefficient of thermal expansion between two-layer metal is different, and hot bimetallic strip 6 will be towards the cylinder 2 rotation direction bending promptly.

The hot bimetallic strip 6 can drive the deformation thorn barrel 3 to bend together in the bending process, and further ensure that the deformation thorn barrel 3 can conveniently drive the mulching film to move upwards together after piercing the mulching film.

And when 6 temperatures of hot bimetallic strip reached high enough, will make thermistor's resistance reduce, will make the elastic switch-on until the electro-magnet as shown in figure 4, and then realize that electric capacity 41 is inside to have a strong electric field, and then realize that electrorheological fluid will turn into solid-state, and then electrorheological fluid will regard as the main support skeleton of deformation thorn section of thick bamboo 3 this moment, and then when ensureing that deformation thorn section of thick bamboo 3 pierces through ground or plastic film, deformation thorn section of thick bamboo 3 self has sufficient intensity.

When the roller 2 continues to rotate, high-speed airflow is blown from the air inlet 51 through the air cavity 11, so that the thermal bimetallic strip 6 is cooled, the capacitor 41 is in a disconnected state again due to the temperature reduction of the thermal bimetallic strip 6, the electrorheological fluid is converted into a liquid state again, the thermal bimetallic strip 6 is converted into a linear state again, and the thermal bimetallic strip 6 drives the deformation puncture cylinder 3 to be converted into the linear state, so that the mulching films are conveniently separated.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.