CN210580053U

CN210580053U - Threshing device for combine harvester and having concave plate sieve adhesion removing function

Info

Publication number: CN210580053U
Application number: CN201921224161.3U
Authority: CN
Inventors: 姬江涛; 赵向鹏; 王荣先; 高颂; 朱雪峰; 程群; 邢帆; 张开
Original assignee: Henan University of Science and Technology
Current assignee: Henan University of Science and Technology
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-05-22
Anticipated expiration: 2029-07-31

Abstract

The utility model relates to the field of agricultural machinery equipment, specific threshing device that is used for combine harvester and has notch board sieve adhesion thing clearance function that says so. The threshing device comprises a shell, a threshing roller and a concave plate sieve, wherein adhesive removing mechanisms are respectively arranged outside the shell and at the positions of two ends of the concave plate sieve, the adhesive removing mechanisms comprise a sleeve, a plate heat exchanger and an air blower, the plate heat exchanger and the air blower are arranged in the sleeve at intervals, one end of the sleeve, which is close to the plate heat exchanger, is provided with an air outlet nozzle, the air outlet nozzle points to the position of the end part, corresponding to the concave plate sieve, of the shell through a through hole, and a plurality of heat conducting sheets for guiding the heat of the end part of the concave plate sieve to the middle; the liquid inlet of the plate heat exchanger is connected with a cooling liquid outlet of the combine harvester engine, and the liquid outlet of the plate heat exchanger is connected with a cooling liquid circulating and radiating system of the combine harvester engine. The utility model further removes the adhered objects on the concave plate sieve in the threshing device through hot air drying to improve the permeability of the concave plate sieve.

Description

Threshing device for combine harvester and having concave plate sieve adhesion removing function

Technical Field

The utility model relates to the field of agricultural machinery equipment, specific threshing device that is used for combine harvester and has notch board sieve adhesion thing clearance function that says so.

Background

In the process of grain harvesting and threshing, the maturity stages of grains are different, the moisture content of the stalks can be greatly different, and the factors of the humidity difference of the weather during grain harvesting, the sugar content of juice with the adhesion function after the stalks are crushed and the like cause the phenomenon that the crushed stalks and grains are easily pasted on the meshes of the concave sieve plate when the grains are threshed between the rollers. After the concave sieve plate meshes are stuck and blocked, the grains pass through the concave sieve plate, so that the blocking condition is more serious, and a vicious circle is formed. In severe cases, the material inlet is not smooth, the threshing process is seriously blocked, the machine needs to be stopped to disassemble the threshing element, and the threshing element is installed and used again after being cleaned. Greatly aggravate labor cost and delay harvest pace and time.

The threshing element can be replaced in general conditions, the threshing gap between the roller and the concave sieve plate is changed through the length of the threshing element, so that the threshing element is suitable for grains with different water contents. The other type adjusts the height of the concave sieve plate through a mechanical device and an electric control device to achieve the purpose of changing the gap between the roller and the concave sieve plate. This method is an advantageous solution in that the gap can be adjusted relatively quickly without the need for a machine shutdown. But the relative material humidity is large, and when the stalk juice is seriously blocked due to high sugar content, the effect of completely dredging can not be achieved only through the adjustable gap.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a thresher who is used for combine and has concave plate sieve adhesion thing clearance function, through hot air drying and clear away the adhesion thing on the concave plate sieve among the thresher to improve the permeability of concave plate sieve department.

In order to solve the technical problem, the utility model discloses a technical scheme be: a threshing device used for a combine harvester and having a concave plate sieve adhered material clearing function comprises a machine shell, a threshing cylinder rotationally arranged in the machine shell and a concave plate sieve fixed in the machine shell and positioned below the threshing cylinder, wherein a threshing gap is formed between the threshing cylinder and the concave plate sieve, adhered material clearing mechanisms are respectively arranged at the positions outside the machine shell and positioned at two ends of the concave plate sieve, each adhered material clearing mechanism comprises a sleeve fixed on the machine shell, plate heat exchangers arranged in the sleeves at intervals and an air blower capable of exhausting air towards the plate heat exchangers, two ends of the sleeve are both distributed in an open manner, one end of the sleeve close to the air blower forms an air inlet, one end of the sleeve close to the plate heat exchangers is provided with an air outlet nozzle, the air outlet nozzle points to the corresponding side end position of the concave plate sieve through a through hole arranged on the machine shell, a plurality of heat conducting sheets used for guiding the heat at the end part of, the heat conducting fins are distributed along the axial direction of the threshing cylinder and fixed on the concave plate sieve at the position of the side part of the sieve pore; the liquid inlet of the plate heat exchanger is connected with a cooling liquid outlet of the combine harvester engine, and the liquid outlet of the plate heat exchanger is connected with a cooling liquid circulating and radiating system of the combine harvester engine.

Preferably, the end of the air outlet nozzle is in a narrow flat shape corresponding to the longitudinal section shape of the concave plate screen.

Preferably, the air outlet angle of the tail end of the air outlet nozzle towards the concave plate screen is 50-60 degrees.

Preferably, the heat conducting fins are made of copper or aluminum and are fixedly bonded on the concave plate sieve, the thickness of the heat conducting fins is 4-8mm, an array formed by all the heat conducting fins is positioned in the middle of the concave plate sieve, the length of the array is two thirds of the length of the concave plate sieve, and the width of the array is the same as that of the concave plate sieve.

Preferably, the blower is an axial fan coaxially fixed in the sleeve.

Preferably, the liquid inlet and the liquid outlet of the plate heat exchanger are respectively connected with a flexible pipe which is used for being connected with a cooling liquid outlet of a combine harvester engine or a cooling liquid circulating and radiating system of the combine harvester engine.

Advantageous effects

The utility model provides an inside adhesion clearance mechanism can introduce thresher with hot-blast, hot-blast wind direction slant is down, can make on the one hand hot-blast paste-like plug that can be on with concave sieve board dewater fast and become the drying, and on the other hand makes the adhesion after the drying downwards see through concave sieve board, has eliminated the influence that adhesion blockked up. The concave sieve is also provided with the heat conducting fins, and the heat quantity discharged to the two ends of the concave sieve is rapidly guided to the middle part of the concave sieve by utilizing the advantage of fast heat conduction of the heat conducting fins, so that the adhered substances in the middle part of the concave sieve can be heated, dried, dehumidified and separated from the sieve pores of the concave sieve.

The utility model utilizes the heat generated in the working process of the engine as the heat source, on one hand, the energy is reasonably utilized, the purpose of clearing away the adhered objects of the concave plate sieve is achieved, and meanwhile, unnecessary energy waste is saved, thereby being beneficial to energy conservation and environmental protection; on the other hand, the engine cooling liquid is rapidly cooled at the position of the adhered material removing mechanism, so that the working load of the engine cooling circulation system is reduced, and the heat dissipation of the engine is more beneficial.

The utility model provides a mode of jam-proof is novel, situation adaptability to cereal harvesting is stronger, for the method of the concave sieve board of traditional clearance, need not shut down the influence and reap time and increase labour cost, for the jam-proof antiwind device scheme in variable clearance, because of stable in structure, under the complicated condition of field situation, safe and reliable more. The whole adhered material clearing mechanism is external, and the disassembly and the maintenance are more convenient and faster.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of one of the adherent removing mechanisms of the present invention cooperating with a concave plate screen;

FIG. 2 is a schematic view showing the distribution of the heat conducting strips on the concave screen according to the present invention;

fig. 3 is a front sectional view of the present invention;

fig. 4 is a right side view of the present invention;

fig. 5 is a top cross-sectional view of the present invention;

the labels in the figure are: 1. the device comprises a concave plate sieve, 101 sieve pores, 2 air outlet nozzles, 3 plate heat exchangers, 4 a machine shell, 5 flexible pipes, 6 a blower, 7 an air inlet, 8 a sleeve, 9 heat conducting fins, 10 a threshing roller.

Detailed Description

As shown in fig. 1, 3, 4 and 5, the utility model discloses a thresher who is used for combine and has 1 adhesion of notch board sieve and clear away the function, for tangential flow cylinder thresher in the main part, mainly include casing 4, rotate threshing cylinder 10 that sets up in casing 4 and fix the notch board sieve 1 that lies in threshing cylinder 10 below in casing 4, form the clearance of threshing between threshing cylinder 10 and notch board sieve 1, seed grain mainly is in the clearance of threshing and is accomplished to thresh by the friction rubbing effect between threshing cylinder 10 and the notch board sieve, seed grain and straw after breaking away from fall by sieve mesh 101 on the notch board sieve 1, through the separation of air separation mechanism.

In order to solve the purpose of clearly cleaning the adhered objects on the concave screen 1 to keep the permeability of the concave screen 1, the utility model discloses the position outside the casing 4 and at the two ends of the concave screen 1 is respectively provided with an adhered object removing mechanism. The adherent removing mechanism removes the adherent clogged on the notch board sieve 1 by guiding the heat generated by the combine engine into the threshing device. The utility model provides an adhesion clearance mechanism is including fixing on casing 4 and along the sleeve 8 of vertical direction distribution, and sleeve 8 as in shown in fig. 1 is the half section diagram, is equipped with axial-flow type air-blower 6 and plate heat exchanger 3 from top to bottom in proper order in sleeve 8. The blowing direction of the blower 6 is from top to bottom, the upper end of the sleeve 8 is open and forms an air inlet 7 for supplying air to the blower 6. The liquid inlet and the liquid outlet of the plate heat exchanger 3 are respectively connected with a cooling liquid outlet of the engine and a cooling liquid circulating and radiating system of the combine harvester engine through a flexible pipe 5. High-temperature cooling liquid discharged from an engine passes through the heat exchange plates of the plate heat exchanger 3, heat is transferred to air flowing through the sleeve 8 through the air blower 6, the air is rapidly heated, and the heated air passes through the air outlet nozzle 2 at the lower end of the sleeve 8 and is in the same direction as the end part of the concave plate screen 1. The cooling liquid with the temperature reduced enters a circulating heat dissipation system for further cooling and then flows back to the engine.

The air outlet nozzle 2 points to the corresponding side end part of the concave plate sieve 1 through a through hole arranged on the machine shell 4. In order to solve the problem that the middle part of the concave sieve plate is slightly affected by hot air, the middle part of the concave sieve plate can be rapidly heated under the action of hot air so as to remove the adhered substances in the middle part of the concave sieve 1. As shown in fig. 2, the utility model discloses interval is equipped with many on concave sieve 1 and is used for the conducting strip 9 at concave sieve 1 tip heat direction concave sieve 1 middle part, and conducting strip 9 distributes and fixes the position that lies in sieve mesh 101 lateral part on concave sieve 1 along threshing cylinder 10's axial direction. The heat conducting fins 9 are made of materials with excellent heat conducting performance such as copper or aluminum and are fixed on the concave plate sieve 1 in an adhering mode, the thickness of the heat conducting fins 9 is 4-8mm, an array formed by all the heat conducting fins 9 is located in the middle of the concave plate sieve 1, the length of the array is two thirds of the length of the concave plate sieve 1, and the width of the array is the same as the width of the concave plate sieve 1.

In this embodiment, the end of the air outlet 2 is shaped like a narrow flat corresponding to the longitudinal section of the concave screen 1, so as to completely cover the end of the concave screen 1. The air outlet incident angle of the tail end of the air outlet nozzle 2 facing the concave plate sieve 1 is 50-60 degrees, on one hand, the adhered substances adsorbed on the concave plate sieve 1 can be dried through hot air, and on the other hand, the dried blockage can be blown downwards through downward wind power, so that the sieve holes 101 of the concave plate sieve 1 are kept smooth.

Claims

1. A thresher for combine and have concave screen adhesion thing clearance function, including casing (4), rotate threshing cylinder (10) that sets up in casing (4) and fix concave screen (1) that lie in threshing cylinder (10) below in casing (4), form threshing gap, its characterized in that between threshing cylinder (10) and concave screen (1): the machine shell (4) is provided with an adhered material removing mechanism at positions outside and at two ends of the concave plate sieve (1), the adhered material removing mechanism comprises a sleeve (8) fixed on the machine shell (4) and a plate heat exchanger (3) arranged in the sleeve (8) at intervals and an air blower (6) capable of exhausting air towards the direction of the plate heat exchanger (3), two ends of the sleeve (8) are distributed in an open mode, one end, close to the air blower (6), of the sleeve (8) forms an air inlet (7), one end, close to the plate heat exchanger (3), of the sleeve (8) is provided with an air outlet nozzle (2), the air outlet nozzle (2) is arranged at the position of the end part, corresponding to the concave plate sieve (1), of a through hole formed in the machine shell (4), a plurality of heat conducting sheets (9) used for guiding heat at the end part of the concave plate sieve (1) to the middle part of the concave plate sieve (1) are arranged on the concave plate sieve (1) at intervals, the heat conducting sheets (9) are distributed in the (101) The position of the side; the liquid inlet of the plate type heat exchanger (3) is connected with a cooling liquid outlet of the combine harvester engine, and the liquid outlet of the plate type heat exchanger is connected with a cooling liquid circulating and radiating system of the combine harvester engine.

2. The threshing apparatus for a combine harvester having a function of removing adhering substances of a well screen according to claim 1, wherein: the tail end of the air outlet nozzle (2) is in a narrow flat shape corresponding to the shape of the longitudinal section of the concave plate sieve (1).

3. The threshing apparatus for a combine harvester having a function of removing adhering substances of a well screen according to claim 1, wherein: the air outlet incident angle of the tail end of the air outlet nozzle (2) facing the concave plate sieve (1) is 50-60 degrees.

4. The threshing apparatus for a combine harvester having a function of removing adhering substances of a well screen according to claim 1, wherein: the heat conducting fins (9) are made of copper or aluminum and are fixedly bonded on the concave plate sieve (1), the thickness of the heat conducting fins (9) is 4-8mm, an array formed by all the heat conducting fins (9) is positioned in the middle of the concave plate sieve (1), the length of the array is two thirds of the length of the concave plate sieve (1), and the width of the array is the same as that of the concave plate sieve (1).

5. The threshing apparatus for a combine harvester having a function of removing adhering substances of a well screen according to claim 1, wherein: the blower (6) is an axial flow blower coaxially fixed in the sleeve (8).

6. The threshing apparatus for a combine harvester having a function of removing adhering substances of a well screen according to claim 1, wherein: the liquid inlet and the liquid outlet of the plate heat exchanger (3) are respectively connected with a flexible pipe (5) which is used for being connected with a cooling liquid outlet of a combine harvester engine or a cooling liquid circulating and radiating system of the combine harvester engine.