Multi-stage wheat straw pulverizer

Abstract

The utility model discloses a multi-stage wheat straw pulverizer, belongs to the technical field of wheat straw treatment, and solves the problems that wheat straws are subjected to subsequent treatment after being pulverized once at present, and subsequent processing of the wheat straws is not facilitated due to the fact that the wheat straws are kept large in size. Comprising a first-stage smashing box, a second-stage smashing box located below the first-stage smashing box, a first-stage smashing wheel set rotationally connected into the first-stage smashing box and a second-stage smashing wheel set rotationally connected into the second-stage smashing box, a feeding opening communicated with the first-stage smashing box is formed in the top face of the first-stage smashing box, and the top face of the second-stage smashing box is open; and the top surface of the secondary crushing box is fixedly connected with a sealing plate. When the wheat straw smashing device needs to work, timing is started and a circuit is switched on by pressing a control button, a delay circuit sends out a signal after being charged, the controller sends out the signal to start the motor, the first-stage smashing wheel set and the second-stage smashing wheel set to work at the same time, and after wheat straw is smashed, a second control signal triggers the distance sensor to detect and feed back the signal; after voltage comparison, the centrifugal pump is started to discharge wheat straw.

Description

Technical Field

[0001] The utility model relates to the technical field of wheat straw processing, in particular to a multi-stage wheat straw crusher. Background Art

[0002] Wheat straw pulverization is an agricultural waste recycling technology that transforms wheat straw, a crop byproduct, into a valuable resource. After pulverization, wheat straw can be used for a variety of purposes, including as livestock feed, a soil conditioner, and a raw material for biomass energy. This process typically involves using specialized machinery to cut the straw into small pieces or powder for easy handling and application. The increased surface area of ​​pulverized wheat straw makes it easier for microorganisms to decompose it, increasing the soil's organic matter content and aeration, improving soil structure. Furthermore, as feed, it provides the crude fiber and some nutrients required by livestock.

[0003] Therefore, wheat straw needs to be crushed into extremely small particles or even powder after being crushed, so that it can be more convenient for subsequent processing of wheat straw. Currently, wheat straw is crushed once and then processed subsequently, and maintaining a large volume is not conducive to its subsequent processing.

[0004] Therefore, a multi-stage wheat straw crusher is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a multi-stage wheat straw crusher.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A multi-stage wheat straw crusher includes a first-stage crushing box, a second-stage crushing box located below the first-stage crushing box, a first-stage crushing wheel group rotatably connected to the first-stage crushing box, and a second-stage crushing wheel group rotatably connected to the second-stage crushing box. The top surface of the first-stage crushing box is provided with a feed port connected to the first-stage crushing box, the top surface of the second-stage crushing box is open, and a sealing plate is fixedly connected to the top surface of the second-stage crushing box, the sealing plate covers half of the opening of the second-stage crushing box, the side wall of the first-stage crushing box is provided with an outlet connected to the interior thereof, a discharge guide rail located below the opening of the second-stage crushing box is fixedly connected between the side wall of the first-stage crushing box and the side wall of the second-stage crushing box, the side bottom of the second-stage crushing box is connected to a discharge pipe, and the discharge pipe is connected to a centrifugal pump.

[0008] Preferably, it further comprises a first drive motor and a second drive motor, wherein the output shaft of the first drive motor is transmission-connected to the primary crushing wheel set, and the output shaft of the second drive motor is transmission-connected to the secondary crushing wheel set.

[0009] Preferably, it further comprises a control circuit, which is coupled to the centrifugal pump, the first drive motor, and the second drive motor, and controls the first drive motor, the second drive motor, and the centrifugal pump to operate respectively.

[0010] Preferably, the control circuit includes

[0011] Control button, used for timing and triggering and connecting the circuit within the timing time;

[0012] A delay circuit, wherein the input end of the delay circuit is electrically connected to a control button, the delay circuit is powered on and starts timing after the control button is closed, and emits a delay signal after the timing time ends;

[0013] a controller, wherein two input terminals of the controller are respectively coupled to the output terminal of the delay circuit and the other terminal of the control button, and the controller outputs a control signal 1 and a control signal 2 in response to the closing of the control button and the delay signal, respectively;

[0014] a first motor driving circuit, the first motor driving circuit being coupled to the controller and the first driving motor, and the first motor driving circuit controlling the first driving motor to operate in response to a control signal;

[0015] a second motor driving circuit, the second motor driving circuit being coupled to the controller and the second driving motor, and the second motor driving circuit controlling the second driving motor to operate in response to control signal one;

[0016] a trigger, wherein an input terminal of the trigger is coupled to an output terminal of the controller, and the trigger sends a trigger signal in response to the second control signal;

[0017] A distance sensor is provided on the bottom surface of the sealing plate, and the distance sensor collects the amount of wheat straw in the secondary crushing box and feeds back a distance signal;

[0018] a delay trigger circuit, the input end of which is coupled to the output end of the trigger, the delay trigger circuit starting timing in response to the trigger signal and controlling the distance sensor to be powered on after the timing time ends;

[0019] a voltage comparison circuit, wherein an input terminal of the voltage comparison circuit is coupled to an output terminal of the distance sensor, and the voltage comparison circuit feeds back a comparison signal in response to the distance signal being smaller than a distance reference signal;

[0020] A switch circuit, wherein a controlled end of the switch circuit is coupled to an output end of the voltage comparison circuit, the switch circuit is coupled to a centrifugal pump, and the switch circuit controls the centrifugal pump to be powered on in response to a comparison signal.

[0021] Preferably, the control button includes a timing switch, the delay circuit includes an RC delay circuit, the controller includes an STM32F103RCT6 embedded microcontroller, and the first motor drive circuit and the second motor drive circuit include a TB67S109AFTG motor drive chip.

[0022] Preferably, the trigger includes an RS trigger, the delayed trigger circuit includes an RC delay circuit and a transistor switch 1, the output end of the RC delay circuit is coupled to the base of the transistor switch 1, the collector of the transistor switch 1 is connected to power, and the emitter of the transistor switch 2 is connected to the distance sensor and then grounded.

[0023] Preferably, the voltage comparison circuit includes a voltage comparator, the switching circuit includes a transistor switch 2, the base of the transistor switch 2 is coupled to the output end of the voltage comparison circuit, the collector of the transistor switch 2 is connected to the power supply, and the emitter of the transistor switch 2 is connected to the centrifugal pump and then grounded.

[0024] The utility model has the following beneficial effects:

[0025] When the utility model needs to work, a control button is pressed to start the timing and connect the circuit. After the delay circuit is charged, a signal is sent, and the controller sends a signal to start the motor. The first-level crushing wheel group and the second-level crushing wheel group work at the same time. After the wheat straw is crushed, the control signal 2 triggers the distance sensor to detect and feedback the signal. After the voltage is compared, the centrifugal pump is started to discharge the wheat straw. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a structural diagram of the utility model;

[0028] Figure 2 This is a structural block diagram of the control circuit in this utility model.

[0029] 1. Primary crushing box; 101. Feed port; 102. Discharge guide rail; 2. First drive motor; 3. Secondary crushing box; 301. Sealing plate; 302. Discharge pipe; 4. Second drive motor; 5. Centrifugal pump; 6. Control button; 7. Delay circuit; 8. Controller; 9. First motor drive circuit; 10. Second motor drive circuit; 11. Trigger; 12. Delay trigger circuit; 13. Distance sensor; 14. Voltage comparison circuit; 15. Switch circuit. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0033] In the description of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use, or are the orientation or position relationship commonly understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Furthermore, the terms “first,” “second,” “third,” etc., are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0035] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0036] A multi-stage straw crusher, such as Figure 1 As shown, it includes a primary crushing box 1, a secondary crushing box 3 located below it, a primary crushing wheel group rotatably connected to the primary crushing box 1, a secondary crushing wheel group rotatably connected to the secondary crushing box 3, and a first drive motor 2 and a second drive motor 4. The top surface of the primary crushing box 1 is provided with a feed port 101 connected to it, the top surface of the secondary crushing box 3 is open, and a sealing plate 301 is fixedly connected to the top surface of the secondary crushing box 3, and the sealing plate 301 covers half of the opening of the secondary crushing box 3. An outlet connected to its interior is provided on the side wall of the primary crushing box 1, and a discharge guide rail 102 located below the opening of the secondary crushing box 3 is fixedly connected between the side wall of the primary crushing box 1 and the side wall of the secondary crushing box 3. The side bottom of the secondary crushing box 3 is connected to a discharge pipe 302, and the discharge pipe 302 is connected to a centrifugal pump 5. The output shaft of the first drive motor 2 is transmission-connected to the primary crushing wheel group, and the output shaft of the second drive motor 4 is transmission-connected to the secondary crushing wheel group.

[0037] The system further includes a control circuit coupled to the centrifugal pump 5 , the first drive motor 2 , and the second drive motor 4 . The control circuit controls the first drive motor 2 , the second drive motor 4 , and the centrifugal pump 5 to operate respectively.

[0038] like Figure 2As shown, the control circuit includes a control button 6, a delay circuit 7, a controller 8, a first motor drive circuit 9, a second motor drive circuit 10, a trigger 11, a distance sensor 13, a delay trigger circuit 12, a voltage comparison circuit 14, and a switch circuit 15, wherein the control button 6 includes a timing switch, the delay circuit 7 includes an RC delay circuit, the controller 8 includes an STM32F103RCT6 embedded microcontroller, the first motor drive circuit 9 and the second motor drive circuit 10 include a TB67S109AFTG motor drive chip, and the trigger 11 includes an RS trigger 11, a delay trigger circuit 12 includes an RC delay circuit and a transistor switch 1, an output end of the RC delay circuit is coupled to the base of the transistor switch 1, a collector of the transistor switch 1 is connected to power, an emitter of the transistor switch 2 is connected to the distance sensor 13 and then to ground, a voltage comparison circuit 14 includes a voltage comparator, a switch circuit 15 includes a transistor switch 2, a base of the transistor switch 2 is coupled to the output end of the voltage comparison circuit 14, a collector of the transistor switch 2 is connected to power, and an emitter of the transistor switch 2 is connected to the centrifugal pump 5 and then to ground.

[0039] The control button 6 is used for timing and triggering and connecting the circuit within the timing time; the input end of the delay circuit 7 is connected to the power setting through the control button 6, and the delay circuit 7 is powered on and starts timing after the control button 6 is closed and sends a delay signal after the timing time ends; the two input ends of the controller 8 are coupled with the output end of the delay circuit 7 and the other end of the control button 6 respectively, and the controller 8 outputs control signal 1 and control signal 2 in response to the closing and delay signals of the control button 6 respectively; the first motor drive circuit 9 is coupled to the controller 8 and the first drive motor 2, and the first motor drive circuit 9 controls the first drive motor 2 to work in response to the control signal 1; the second motor drive circuit 10 is coupled to the controller 8 and the second drive motor 4, and the second motor drive circuit 10 controls the second drive motor 4 to work in response to the control signal 1; the trigger 11 The input end is coupled to the output end of the controller 8, and the trigger 11 sends a trigger signal in response to the control signal 2; the distance sensor 13 is arranged on the bottom surface of the sealing plate 301, and the distance sensor 13 collects the amount of wheat straw in the secondary crushing box 3 and feeds back a distance signal; the input end of the delay trigger circuit 12 is coupled to the output end of the trigger 11, and the delay trigger circuit 12 starts timing in response to the trigger signal and controls the distance sensor 13 to be powered on after the timing time ends; the input end of the voltage comparison circuit 14 is coupled to the output end of the distance sensor 13, and the voltage comparison circuit 14 feeds back a comparison signal in response to the distance signal being less than the distance reference signal; the controlled end of the switch circuit 15 is coupled to the output end of the voltage comparison circuit 14, and the switch circuit 15 is coupled to the centrifugal pump 5, and the switch circuit 15 controls the centrifugal pump 5 to be powered on in response to the comparison signal.

[0040] When the present invention is actually working, the control button 6 will be pressed, the control button 6 will start timing, and the circuit will be connected. At this time, the delay circuit 7 will start charging timing, and after the timing is over, it will send a delay signal to the controller 8. After the control button 6 is connected, it will also send a signal to the controller 8. The controller 8 will send control signal 1 and control signal 2 at this time. The control signal 1 is given to the first motor drive circuit 9 and the second motor drive circuit 10, so that the first drive motor 2 and the second drive motor 4 both start working, so that the first crushing wheel group and the second crushing wheel group start working at the same time. The first crushing wheel group crushes the wheat straw entering the first crushing box 1 through the feed port 101, and the crushed wheat straw can slide through the opening and the discharge track. The straw enters the secondary crushing box 3, and the secondary crushing wheel group completes the secondary crushing of the straw, and accumulates in the secondary crushing box 3. Then, after the control signal 2 is given to the trigger 11, the trigger 11 is triggered and sends a trigger signal to the delay trigger circuit 12. The delay trigger circuit 12 responds to the trigger signal and starts timing and controls the distance sensor 13 to be energized after the timing time ends. At this time, the distance sensor 13 can detect the amount of straw in the secondary crushing box 3 and feed back the distance signal to the voltage comparison circuit 14. The voltage comparison circuit 14 judges that the distance signal is less than the distance reference signal and feeds back the comparison signal to the switch circuit 15, thereby energizing the centrifugal pump 5 to discharge the crushed straw through the discharge pipe 302.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multi-stage straw crusher, characterized in that: The invention comprises a primary crushing box (1), a secondary crushing box (3) located below the primary crushing box, a primary crushing wheel group rotatably connected to the primary crushing box (1), and a secondary crushing wheel group rotatably connected to the secondary crushing box (3), wherein the top surface of the primary crushing box (1) is provided with a feed port (101) connected thereto, the top surface of the secondary crushing box (3) is open, and a sealing plate (301) is fixedly connected to the top surface of the secondary crushing box (3), the sealing plate (301) shields one-half of the opening of the secondary crushing box (3), an outlet connected to the interior of the primary crushing box (1) is provided on the side wall, a discharge guide rail (102) located below the opening of the secondary crushing box (3) is fixedly connected between the side wall of the primary crushing box (1) and the side wall of the secondary crushing box (3), a discharge pipe (302) is connected to the bottom of the side of the secondary crushing box (3), and the discharge pipe (302) is connected to a centrifugal pump (5).

2. A multi-stage wheat straw crusher according to claim 1, characterized in that: It also includes a first drive motor (2) and a second drive motor (4), wherein the output shaft of the first drive motor (2) is transmission-connected to the primary crushing wheel set, and the output shaft of the second drive motor (4) is transmission-connected to the secondary crushing wheel set.

3. The multi-stage straw crusher according to claim 2, characterized in that: The invention also includes a control circuit, which is coupled to the centrifugal pump (5), the first drive motor (2), and the second drive motor (4), and controls the first drive motor (2), the second drive motor (4), and the centrifugal pump (5) to operate respectively.

4. The multi-stage straw crusher according to claim 3, characterized in that: The control circuit includes A control button (6) is used to time and trigger and connect the circuit within the time limit; A delay circuit (7), wherein the input end of the delay circuit (7) is electrically connected to the control button (6), and the delay circuit (7) is powered on to start timing after the control button (6) is closed and emits a delay signal after the timing time ends; A controller (8), wherein two input terminals of the controller (8) are respectively coupled to the output terminal of the delay circuit (7) and the other terminal of the control button (6), and the controller (8) outputs a control signal 1 and a control signal 2 in response to the closing and delay signals of the control button (6); a first motor drive circuit (9), the first motor drive circuit (9) being coupled to the controller (8) and the first drive motor (2), and the first motor drive circuit (9) controlling the first drive motor (2) to operate in response to a control signal; a second motor drive circuit (10), the second motor drive circuit (10) being coupled to the controller (8) and the second drive motor (4), and the second motor drive circuit (10) controlling the second drive motor (4) to operate in response to a control signal 1; A trigger (11), wherein an input end of the trigger (11) is coupled to an output end of the controller (8), and the trigger (11) sends a trigger signal in response to a second control signal; A distance sensor (13) is provided on the bottom surface of the sealing plate (301), wherein the distance sensor (13) collects the amount of wheat straw in the secondary crushing box (3) and feeds back a distance signal; A delay trigger circuit (12), an input end of which is coupled to an output end of the trigger (11), wherein the delay trigger circuit (12) starts timing in response to a trigger signal and controls the distance sensor (13) to be powered on after the timing time ends; A voltage comparison circuit (14), wherein an input end of the voltage comparison circuit (14) is coupled to an output end of the distance sensor (13), and the voltage comparison circuit (14) feeds back a comparison signal in response to the distance signal being smaller than a distance reference signal; A switch circuit (15), wherein a controlled end of the switch circuit (15) is coupled to an output end of the voltage comparison circuit (14), the switch circuit (15) is coupled to the centrifugal pump (5), and the switch circuit (15) controls the centrifugal pump (5) to be energized in response to a comparison signal.

5. The multi-stage wheat straw crusher according to claim 4, characterized in that: The control button (6) includes a timing switch, the delay circuit (7) includes an RC delay circuit, the controller (8) includes an STM32F103RCT6 embedded microcontroller, and the first motor drive circuit (9) and the second motor drive circuit (10) include TB67S109AFTG motor drive chips.

6. The multi-stage straw crusher according to claim 4, characterized in that: The trigger (11) includes an RS trigger (11), and the delay trigger circuit (12) includes an RC delay circuit and a transistor switch 1. The output end of the RC delay circuit is coupled to the base of the transistor switch 1, the collector of the transistor switch 1 is connected to electricity, and the emitter of the transistor switch 1 is connected to the distance sensor (13) and then grounded.

7. The multi-stage straw crusher according to claim 4, characterized in that: The voltage comparison circuit (14) includes a voltage comparator, and the switch circuit (15) includes a transistor switch 2, wherein the base of the transistor switch 2 is coupled to the output end of the voltage comparison circuit (14), the collector of the transistor switch 2 is electrically connected, and the emitter of the transistor switch 2 is connected to the centrifugal pump (5) and then grounded.

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