Biochar production line straw raw material conveying belt feeding device and method

Abstract

The invention provides a biochar production line straw raw material conveyor belt feeding device, which comprises a feeding section, which comprises a first conveyor belt, a first driver connected with the first conveyor belt and driving the first conveyor belt to move, and a first rack, and the first driver is arranged on one side of the first rack; the feeding section comprises a second conveying belt, a second driver and a second rack, the second driver is connected with the second conveying belt and drives the second conveying belt, and the second driver is arranged on one side of the second rack; the detection unit comprises baffles, impulse plates and pressure sensors, the baffles are fixed to the first rack and the second rack, the impulse plates are fixed to the inner sides of the baffles, and the pressure sensors are connected with the impulse plates and fixed to the baffles; the detection unit further comprises a TOF camera, the TOF camera is erected on the first rack at the tail end of the feeding section and located over the first conveying belt, and by means of the scheme, the distribution uniformity of straw raw materials fed on the conveying belt of the carbonization production line is improved, and the spectrum online detection precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of biochar conveyor belt feeding, and in particular to a biochar production line straw raw material conveyor belt feeding device and method. Background Art

[0002] At present, the main method of returning straw to the field in my country is to return it directly to the field. Although returning straw directly to the field can improve the soil, it will produce too much organic acid during the decomposition process, which will harm the plant roots. Under the influence of the low temperature and cold climate in the north, the straw is difficult to rot, which will affect the emergence rate in the second year and cause pests and diseases. Straw carbonization is a method of pyrolyzing crop straw under conditions of lack of oxygen or limited oxygen supply and temperature below 700℃ to form biochar for soil improvement. It can effectively avoid the above-mentioned hazards and realize soil nutrient supplementation and carbon sequestration at the same time. The analysis of the basic characteristics of straw biochar raw materials and products is the basis and prerequisite for the application of straw carbonization, so as to clarify the quality and grade of biochar products, achieve high quality and high price and optimize the utilization method.

[0003] At present, the online detection method of the straw carbonization production line in the factory is mainly to set up the spectrometer above the conveyor belt. Since the straw raw materials fed through the feeding hopper have inconsistent uniformity on the conveyor belt, the spectral detection is greatly affected by stray light, which greatly affects the detection accuracy. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned prior art, the present invention provides a biochar production line straw raw material conveyor belt feeding device and method to improve the distribution uniformity of the straw raw material fed on the carbonization production line conveyor belt and improve the online spectral detection accuracy.

[0005] In order to achieve the above-mentioned object, the present invention provides a straw raw material conveyor belt feeding device for a biochar production line, comprising:

[0006] The feeding section comprises: a first conveyor belt, a first driver connected to the first conveyor belt and driving the first conveyor belt to move, and a first frame, wherein the first driver is arranged on one side of the first frame;

[0007] The feeding section comprises: a second conveyor belt, a second driver connected to the second conveyor belt and driving the second conveyor belt, and a second frame, wherein the second driver is arranged at one side of the second frame;

[0008] The detection unit comprises: a baffle, an impulse plate and a pressure sensor, wherein the baffle is fixed on the first frame and the second frame, the impulse plate is fixed on the inner side of the baffle, and the pressure sensor is connected to the impulse plate and fixed on the baffle;

[0009] A calculation control unit, electrically connected to the pressure sensor, the first driver and / or the second driver respectively;

[0010] When the material thrown out from the tail end of the first conveyor belt hits the impulse plate, the pressure sensor collects the pressure signal of the material hitting the impulse plate and transmits it to the calculation control unit. The calculation control unit adaptively adjusts the rotation speed of the second driver by obtaining the real-time flow rate of the material.

[0011] In some embodiments, the detection unit also includes an image collector, which is arranged on a first frame at the end of the feeding section and directly above the first conveyor belt, wherein the video signal collected by the image collector is transmitted to the computing control unit, and the amount of material in the field of view is obtained by detecting the distance between each point on the plane in the field of view, and then the rotation speed of the first drive is adaptively adjusted.

[0012] In some of the embodiments, a computing controller is provided in the pressure sensor and / or the image acquisition device, or an integrated processor is used as a computing controller.

[0013] In some embodiments, the image collector is a TOF camera, the first driver is a feeding section conveyor belt motor, the second driver is a feeding section slot conveyor belt motor, the first conveyor belt is a feeding section conveyor belt, the second conveyor belt is a feeding section slot conveyor belt, and the relationship between the TOF camera, the pressure sensor data and the motor speed is as follows:

[0014] N1=β×(H-H0)×N 1MAX +N′1

[0015] N2=δ×(P-P0)×N 2MAX +N′2,

[0016] Among them, N1 is the speed of the conveyor belt motor in the feeding section after adjustment, N 1MAX is the maximum speed of the conveyor belt motor in the feeding section, and N'1 is the real-time speed of the conveyor belt motor in the feeding section before adjustment;

[0017] N2 is the speed of the feeding section trough conveyor belt motor after adjustment, N 2MAX is the maximum speed of the feeding section trough conveyor belt motor, and N'2 is the real-time speed of the feeding section trough conveyor belt motor before adjustment;

[0018] β is the coefficient of the relationship between the distance difference detected by the TOF camera and the motor speed, and δ is the coefficient of the relationship between the impulse plate pressure difference and the motor speed;

[0019] H0 is the average distance between points on the plane in the field of view of the TOF camera when the trough conveyor belt in the feeding section rotates at a constant speed at the calibrated speed and the falling materials just fill one slot. H is the real-time average distance of the TOF camera detection plane.

[0020] P0 is the pressure of the impulse plate corresponding to the flow rate of straw raw materials when the trough conveyor belt in the feeding section rotates at a constant speed at the calibrated speed and the falling material just fills one slot. P is the real-time pressure of the impulse plate.

[0021] In some of the embodiments, the detection unit further includes a spectrometer and a light source, and the spectrometer and the light source are mounted on a frame at the end of the feeding section and directly above the second conveyor belt.

[0022] In some embodiments, the feeding section further includes a feeding hopper, wherein the feeding hopper is fixed on the first frame, and the first conveyor belt is at an angle of 45° to the ground.

[0023] In some embodiments, the first driver is connected to the roller of the first conveyor belt to drive the first conveyor belt to move and push the material upward.

[0024] In some of the embodiments, the second conveyor belt of the feeding section is parallel to the ground, and the tail end of the feeding section is connected to a subsequent carbonization production line.

[0025] In some embodiments, the second driver is connected to the roller of the second conveyor belt to drive the second conveyor belt to move and push the material forward.

[0026] The present invention also provides a method for feeding a biochar straw raw material conveyor belt, using the biochar straw raw material conveyor belt feeding device as described above, comprising the following steps:

[0027] The straw raw material is fed into the feeding hopper, and the first driver drives the first conveyor belt to move so that the material is pushed upward. The image collector detects each distance point on the plane within the field of view, obtains the amount of material in the field of view, and adaptively adjusts the speed of the first driver, thereby adaptively adjusting the speed of the first conveyor belt;

[0028] The material is thrown out at the tail end of the first conveyor belt and hits the impulse plate. The pressure sensor calculates the pressure of the raw material hitting the impulse plate, obtains the real-time flow of the raw material, adaptively fine-tunes the speed of the motor, and then fine-tunes the speed of the second conveyor belt, thereby achieving the adjustment of the uniformity of the raw material falling into the feeding section;

[0029] The raw material falls onto the second conveyor belt through the baffle, and the second driver drives the second conveyor belt to move. The light source and spectrometer installed at the tail end of the feeding section detect the quality of the raw material;

[0030] After passing through the feeding section, the raw materials are pushed to the carbonization production line connected to the tail end for subsequent carbonization production.

[0031] The present invention has the following beneficial effects:

[0032] The technical solution provided by the present invention provides an effective solution to the problem that the online detection of straw biochar conveyor belt feeding has a great influence on the spectral detection due to inconsistent uniformity, thereby affecting the detection accuracy. It belongs to the technical field of biochar conveyor belt feeding, and is a conveyor belt feeding method and device that self-adjusts to improve the uniformity consistency of straw raw materials to facilitate detection.

[0033] The biochar production line straw raw material conveyor belt feeding device and method provided by the present invention adjusts the distribution uniformity of straw raw materials in the feeding section through a double-layer conveyor belt structure, detects the flow rate of the feeding section based on a TOF camera, adaptively adjusts the speed of the feeding section conveyor belt, detects the flow rate of the feeding section based on an impulse plate and a pressure sensor, adaptively fine-tunes the speed of the trough conveyor belt of the feeding section, and adjusts the distribution uniformity of the feeding section, thereby reducing the influence of stray light and further improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the three-dimensional structure of a straw raw material conveyor belt feeding device for a biochar production line shown in an embodiment of the present invention;

[0035] Figure 2 It is a front view of a straw raw material conveyor belt feeding device of a biochar production line shown in an embodiment of the present invention;

[0036] Figure 3 It is a top view of a straw raw material conveyor belt feeding device of a biochar production line shown in an embodiment of the present invention;

[0037] Figure 4 This is an overall cross-sectional view of a straw raw material conveyor belt feeding device for a biochar production line shown in an embodiment of the present invention;

[0038] Wherein, the reference numerals are:

[0039] 11- first conveyor belt;

[0040] 12- first drive;

[0041] 13- first rack;

[0042] 14-feeding hopper;

[0043] 21- baffle;

[0044] 22- impulse plate;

[0045] 23-pressure sensor;

[0046] 24-TOF camera;

[0047] 25-Spectrometer;

[0048] 26-light source;

[0049] 31- second conveyor belt;

[0050] 32 - second driver;

[0051] 33-Second rack. DETAILED DESCRIPTION

[0052] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the claims attached to the present invention.

[0053] Certain words are used in the specification and subsequent claims to refer to specific components or parts. It should be understood by those skilled in the art that technical users or manufacturers may refer to the same component or part by different nouns or terms. This specification and subsequent claims do not use differences in names as a way to distinguish components or parts, but use differences in the functions of components or parts as the criteria for distinction. The words "include" and "comprising" mentioned throughout the specification and subsequent claims are open-ended terms and should be interpreted as "including but not limited to". In addition, the word "connect" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.

[0054] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and "about", or "approximately", "substantially", "left and right" and the like indicating directions or positional relationships or parameters are all based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description content, and do not indicate or imply that the referred device or element must have a specific direction, specific size, or be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0055] See also Figure 1-4An embodiment of the present invention provides a biochar production line straw raw material conveyor belt feeding device, comprising: a feeding section, comprising: a first conveyor belt 11, a first driver 12 connected to the first conveyor belt 11 and driving the first conveyor belt 11 to move, and a first frame 13, wherein the first driver 12 is arranged on one side of the first frame 13; a feeding section, comprising: a second conveyor belt 31, a second driver 32 connected to the second conveyor belt 31 and driving the second conveyor belt 31, and a second frame 33, wherein the second driver 32 is arranged on one side of the second frame 33; a detection unit, comprising: a baffle 21, an impulse plate 22 and a pressure sensor 23, wherein the baffle 21 is fixed to the first frame 13 and the second frame 13. On the second frame 33, the impulse plate 22 is fixed on the inner side of the baffle 21, and the pressure sensor 23 is connected to the impulse plate 22 and fixed on the baffle 21; the computing control unit is electrically connected to the image collector 24, the pressure sensor 23, the first driver 12 and / or the second driver 32 respectively; wherein, when the material thrown out from the tail end of the first conveyor belt 11 hits the impulse plate 22, the pressure sensor 23 collects the pressure signal of the material hitting the impulse plate 22 to the computing control unit, and the computing control unit adaptively adjusts the rotation speed of the second driver 32 by obtaining the real-time flow rate of the material, thereby fine-tuning the rotation speed of the second conveyor belt 31.

[0056] Furthermore, the detection unit also includes an image collector, specifically a TOF camera 24, which is arranged on the first frame 13 at the end of the feeding section and directly above the first conveyor belt 11, wherein the video signal collected by the image collector is transmitted to the calculation control unit, and the material amount in the field of view is obtained by detecting the distance of each point on the plane in the field of view, and then the rotation speed of the first driver 12 is adaptively adjusted, and then the rotation speed of the first conveyor belt 11 is adaptively adjusted.

[0057] In this embodiment, a calculation controller is provided in the pressure sensor 23 and / or the image collector, or an integrated processor may be used as a calculation controller.

[0058] Specifically, in this embodiment, the first driver 12 is a feeding section conveyor belt motor, the second driver 32 is a feeding section trough conveyor belt motor, the first conveyor belt 11 is a feeding section conveyor belt, and the second conveyor belt 31 is a feeding section trough conveyor belt.

[0059] The relationship between the data of the TOF camera 24 and the pressure sensor 23 and the motor speed is as follows:

[0060] N1=β×(H-H0)×N 1MAX +N′1

[0061] N2=δ×(P-P0)×M2MAX +N′2;

[0062] Note: N1 is the speed of the conveyor motor in the feeding section after adjustment, N 1MAX is the maximum speed of the conveyor belt motor in the feeding section, N'1 is the real speed of the conveyor belt motor in the feeding section before adjustment, N2 is the speed of the trough conveyor belt motor in the feeding section after adjustment, N 2MAX is the maximum speed of the feeding section trough conveyor belt motor, N'2 is the real-time speed of the feeding section trough conveyor belt motor before adjustment, β is the coefficient of the relationship between the distance difference detected by the TOF camera and the motor speed, δ is the coefficient of the relationship between the impulse plate pressure difference and the motor speed, H0 is the average distance between the points on the plane in the field of view of the TOF camera when the feeding section trough conveyor belt rotates at a constant speed at the calibrated speed and the falling material just fills one slot, H is the real-time average distance of the plane detected by the TOF camera, P0 is the pressure of the impulse plate corresponding to the straw raw material flow when the feeding section trough conveyor belt rotates at a constant speed at the calibrated speed and the falling material just fills one slot, and P is the real-time pressure of the impulse plate.

[0063] Furthermore, the detection unit in this embodiment also includes a spectrometer 25 and a light source 26, and the spectrometer 25 and the light source 26 are mounted on the end frame of the feeding section and directly above the second conveyor belt 31. The feeding section also includes a feeding hopper 14, and the feeding hopper 14 is fixed on the first frame 13. The first conveyor belt 11 is at a 45° angle to the ground.

[0064] In this embodiment, the first driver 12 is connected to the roller of the first conveyor belt 11, driving the first conveyor belt 11 to move, so as to push the material upward. The second conveyor belt 31 of the feeding section is parallel to the ground, and the tail end of the feeding section is connected to the subsequent carbonization production line. The second driver 32 is connected to the roller of the second conveyor belt 31, driving the second conveyor belt 31 to move, so as to push the material forward.

[0065] In summary, in the feeding section of the present embodiment, the straw raw material is fed by the feeding hopper, the conveyor belt motor drives the conveyor belt to move upward, and the straw raw material is driven by the conveyor belt in the feeding section and thrown obliquely upward from the end of the conveyor belt; in the detection unit, the TOF camera calculates the feeding amount in the field of view by detecting the distance between each point in the feeding section, and the thrown straw raw material hits the impulse plate. The pressure sensor can calculate the flow rate of the straw raw material at this time through the pressure on the impulse plate, and adjust the speed of the feeding section conveyor belt according to the TOF camera data, and fine-tune the speed of the feeding section trough conveyor belt according to the pressure sensor data; at the tail end of the feeding section and above the trough conveyor belt, a light source and a spectrometer are set up to perform online detection of the quality of the straw raw material, and the end is connected to the subsequent carbonization production line.

[0066] Another embodiment of the present invention provides a method for feeding a biochar straw raw material conveyor belt, using the biochar straw raw material conveyor belt feeding device as described in the above embodiment, comprising the following steps:

[0067] The straw raw material is fed into the feeding hopper 14, and the first driver 12 drives the first conveyor belt 11 to move so that the material is pushed upward. The TOF camera 24 detects each distance point on the plane within the field of view, obtains the amount of material in the field of view, and adaptively adjusts the speed of the first driver 12, thereby adaptively adjusting the speed of the first conveyor belt 11;

[0068] The material is thrown out at the tail end of the first conveyor belt 11 and hits the impulse plate 22. The pressure sensor 23 obtains the real-time flow rate of the raw material by calculating the pressure of the raw material hitting the impulse plate 22, and adaptively fine-tunes the speed of the motor, thereby fine-tuning the speed of the second conveyor belt 31, thereby achieving the adjustment of the uniformity of the raw material falling into the feeding section;

[0069] The raw material falls onto the second conveyor belt 31 through the baffle 21, and the second driver 32 drives the second conveyor belt 31 to move. The light source 26 and the spectrometer 25 installed at the tail end of the feeding section detect the quality of the raw material.

[0070] After passing through the feeding section, the raw materials are pushed to the carbonization production line connected to the tail end for subsequent carbonization treatment.

[0071] In summary, the biochar straw raw material conveyor belt feeding device provided by the present invention solves the problem that the existing carbonization production line uses a conveyor belt to feed the material, but the straw distribution uniformity is inconsistent, resulting in the spectral detection being greatly affected by stray light, thereby affecting the detection accuracy. It improves the distribution uniformity of the straw raw material fed by the conveyor belt of the carbonization production line and improves the online spectral detection accuracy.

[0072] The biochar straw raw material conveyor belt feeding device provided by the present invention adjusts the distribution uniformity of the straw raw material in the feeding section through a double-layer conveyor belt structure, detects the flow rate of the feeding section based on a TOF camera, adaptively adjusts the speed of the feeding section conveyor belt, detects the flow rate of the feeding section based on an impulse plate and a pressure sensor, adaptively fine-tunes the speed of the trough conveyor belt in the feeding section, and adjusts the distribution uniformity of the feeding section, thereby reducing the influence of stray light and further improving the detection accuracy.

[0073] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A straw raw material conveyor belt feeding device for a biochar production line, characterized by: include: The feeding section comprises: a first conveyor belt, a first driver connected to the first conveyor belt and driving the first conveyor belt to move, and a first frame, wherein the first driver is arranged on one side of the first frame; The feeding section comprises: a second conveyor belt, a second driver connected to the second conveyor belt and driving the second conveyor belt, and a second frame, wherein the second driver is arranged at one side of the second frame; The detection unit comprises: a baffle, an impulse plate and a pressure sensor, wherein the baffle is fixed on the first frame and the second frame, the impulse plate is fixed on the inner side of the baffle, and the pressure sensor is connected to the impulse plate and fixed on the baffle; A calculation control unit, electrically connected to the pressure sensor, the first driver and / or the second driver respectively; When the material thrown out from the tail end of the first conveyor belt hits the impulse plate, the pressure sensor collects the pressure signal of the material hitting the impulse plate and transmits it to the calculation control unit. The calculation control unit adaptively adjusts the rotation speed of the second driver by obtaining the real-time flow rate of the material.

2. The straw raw material conveyor belt feeding device for biochar production line according to claim 1 is characterized by: The detection unit also includes an image collector, which is arranged on the first frame at the end of the feeding section and is located directly above the first conveyor belt, wherein the video signal collected by the image collector is transmitted to the calculation control unit, and the material amount in the field of view is obtained by detecting the distance between each point on the plane in the field of view, and then the rotation speed of the first driver is adaptively adjusted.

3. The biochar production line straw raw material conveyor belt feeding device according to claim 2 is characterized in that: A calculation controller is arranged in the pressure sensor and / or the image collector, or an integrated processor is used as a calculation controller.

4. The straw raw material conveyor belt feeding device for biochar production line according to claim 3 is characterized by: The image collector is a TOF camera, the first driver is a feeding section conveyor belt motor, the second driver is a feeding section slot conveyor belt motor, the first conveyor belt is a feeding section conveyor belt, the second conveyor belt is a feeding section slot conveyor belt, and the relationship between the TOF camera, the pressure sensor data and the motor speed is as follows: N1=β×(H-H0)×N 1MAX +N′1 N2=δ×(P-P0)×N 2MAX +N′2, Among them, N1 is the speed of the conveyor belt motor in the feeding section after adjustment, N 1MAX is the maximum speed of the conveyor belt motor in the feeding section, and N'1 is the real-time speed of the conveyor belt motor in the feeding section before adjustment; N2 is the speed of the feeding section trough conveyor belt motor after adjustment, N 2MAX is the maximum speed of the feeding section trough conveyor belt motor, and N'2 is the real-time speed of the feeding section trough conveyor belt motor before adjustment; β is the coefficient of the relationship between the distance difference detected by the TOF camera and the motor speed, and δ is the coefficient of the relationship between the pressure difference of the impulse plate and the motor speed; H0 is the average distance between points on the plane in the field of view of the TOF camera when the trough conveyor belt in the feeding section rotates at a constant speed at the calibrated speed and the falling materials just fill one slot. H is the real-time average distance of the TOF camera detection plane. P0 is the pressure of the impulse plate corresponding to the flow rate of straw raw materials when the trough conveyor belt in the feeding section rotates at a constant speed at the calibrated speed and the falling material just fills one slot. P is the real-time pressure of the impulse plate.

5. The straw raw material conveyor belt feeding device for biochar production line according to claim 1 is characterized by: The detection unit further comprises a spectrometer and a light source, and the spectrometer and the light source are mounted on a frame at the end of the feeding section and directly above the second conveyor belt.

6. The biochar straw raw material conveyor belt feeding device according to claim 1, characterized in that: The feeding section also includes a feeding hopper, which is fixed on the first frame, and the first conveyor belt is at an angle of 45° to the ground.

7. The biochar straw raw material conveyor belt feeding device according to claim 6, characterized in that: The first driver is connected to the roller of the first conveyor belt to drive the first conveyor belt to move, thereby pushing the material upward.

8. The biochar straw raw material conveyor belt feeding device according to claim 1, characterized in that: The second conveyor belt of the feeding section is parallel to the ground, and the tail end of the feeding section is connected to the subsequent carbonization production line.

9. The biochar straw raw material conveyor belt feeding device according to claim 8, characterized in that: The second driver is connected to the roller of the second conveyor belt to drive the second conveyor belt to move, thereby pushing the material forward.

10. A method for feeding a biochar straw raw material conveyor belt, using the biochar straw raw material conveyor belt feeding device according to any one of claims 1 to 9, characterized in that: The steps include: The straw raw material is fed into the feeding hopper, and the first driver drives the first conveyor belt to move so that the material is pushed upward. The image collector detects each distance point on the plane within the field of view, obtains the amount of material in the field of view, and adaptively adjusts the speed of the first driver, thereby adaptively adjusting the speed of the first conveyor belt; The material is thrown out at the tail end of the first conveyor belt and hits the impulse plate. The pressure sensor calculates the pressure of the raw material hitting the impulse plate, obtains the real-time flow of the raw material, adaptively fine-tunes the speed of the motor, and then fine-tunes the speed of the second conveyor belt, thereby achieving the adjustment of the uniformity of the raw material falling into the feeding section; The raw material falls onto the second conveyor belt through the baffle, and the second driver drives the second conveyor belt to move. The light source and spectrometer installed at the tail end of the feeding section detect the quality of the raw material; After passing through the feeding section, the raw materials are pushed to the carbonization production line connected to the tail end for subsequent carbonization production.

Images