Straw crushing device for biomass power generation

Abstract

The utility model provides a straw crushing device for biomass power generation, which relates to the technical field of straw crushing and comprises a crushing equipment main body, a feed port is arranged at the top of one end of the crushing equipment main body, a crushing bin is arranged at the bottom of the other end of the crushing equipment main body, and the feed port and the crushing bin are communicated to form a feeding section; a straw stacking push plate is arranged at the feeding port towards the feeding section, and the end, away from the feeding section, of the straw stacking push plate is fixed to the output end of the feeding air cylinder; the crushing bin is internally provided with an upper section, a middle section and a lower section, and the middle section is provided with a multi-section cutting tool; a cutter is mounted in the feeding section and close to the feeding hole; according to the device, through the integrated design, multiple functions of feeding, cutting, crushing and the like are integrated, the complexity of a multi-section process is avoided, and the crushing efficiency is remarkably improved; the straw stacking push plate is pushed by the feeding air cylinder, and the cutter is driven by the pressing air cylinder, so that automatic feeding and preliminary cutting are realized, manual operation is reduced, and the automation degree is improved.

Description

Technical Field

[0001] This utility model relates to the field of straw crushing technology, and in particular to a straw crushing device for biomass power generation. Background Technology

[0002] The straw crushing device for biomass power generation is mainly used to physically crush biomass raw materials such as straw to achieve specific size requirements. This device plays an important role in the pretreatment of biomass energy and materials. The main reasons for the need to crush straw are as follows:

[0003] 1) Improve conversion efficiency: The increased surface area of ​​crushed straw is beneficial to subsequent chemical or biological conversion processes. For example, in biomass gasification, fermentation to produce ethanol, or production of bio-fertilizer, shorter straw can provide a larger contact area and accelerate the reaction rate.

[0004] 2) Meet equipment requirements: Existing domestic direct combustion equipment has certain requirements on the size of the fuel entering the furnace, mainly due to the operation of the feeding system. Straw that has not been pre-treated is prone to entanglement and blockage, while crushing can avoid this problem.

[0005] This also includes, but is not limited to, adapting to downstream process requirements and promoting uniform mixing;

[0006] However, current straw is piled up in bulk and compressed quite tightly, making it extremely difficult to crush, resulting in low overall efficiency and a short lifespan for the cutting blades, which are prone to clogging. While multi-stage processes (multiple treatments) can reduce these problems, they are still inefficient and lack high integration of equipment functions. Therefore, we propose a straw crushing device for biomass power generation. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of existing technologies by designing an integrated device to process and cut straw piles without requiring multiple processes, thereby improving crushing efficiency.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A straw crushing device for biomass power generation includes a crushing equipment body. The top of one end of the crushing equipment body is provided with a feed inlet, and the bottom of the other end is provided with a crushing chamber. The feed inlet and the crushing chamber are connected to form a feeding section.

[0010] The feed inlet is provided with a straw stacking pusher plate facing the feeding section, and the end of the straw stacking pusher plate away from the feeding section is fixed to the output end of the feeding cylinder.

[0011] The crushing chamber is designed with three sections: upper, middle, and lower. A multi-segment cutting tool is installed in the middle section.

[0012] A cutter is installed near the inlet in the feeding section. The cutter's cutting edge faces the bottom of the feeding section, and its top is fixed to the output end of the pressure cylinder installed at the top of the crushing equipment body. Straw conveyor belts are installed above and below the feeding section on the side of the cutter away from the inlet.

[0013] Furthermore, a receiving frame is provided at the top of the feed inlet away from the feeding section, and the receiving frame is larger than the feed inlet and inclined inwards towards the feed inlet.

[0014] Furthermore, the size of the straw stacking pusher plate is smaller than the size of the feeding section inside the main body of the crushing equipment, and the number of feeding cylinders is not less than four, which are installed on the outside of the main body of the crushing equipment with their output ends facing the feeding section.

[0015] Furthermore, the multi-segment cutting tool is equipped with several cutting blades that are equidistantly arranged around it, and is driven by a motor installed on the outside of the main body of the crushing equipment.

[0016] Furthermore, the upper and lower sections of the crushing chamber are arranged inclined inwards on both sides, and the inlet of the lower section is smaller than the outlet of the upper section. The middle section is located between the upper and lower sections, and the side of the middle section is circular.

[0017] Furthermore, the multi-segment cutting blades are installed laterally in the middle section of the crushing chamber.

[0018] Furthermore, the outer hinge of the crushing chamber is connected to a maintenance door.

[0019] Furthermore, the bottom of the crushing chamber has an inclined design that extends to the outside where a guide frame is installed.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This device integrates multiple functions such as feeding, cutting, and crushing through an integrated design, avoiding the cumbersome multi-stage process and significantly improving crushing efficiency.

[0022] 2. By using a feeding cylinder to push the straw stacking plate and a pressing cylinder to drive the cutter, automatic feeding and preliminary cutting are achieved, reducing manual operation and improving the degree of automation.

[0023] 3. Install cutters in the feeding section and use multi-segment cutting blades in the middle of the crushing chamber to first cut the straw pile into thinner pieces and then convey it down to the cutting point, reducing the amount of straw to be cut at one time, effectively improving cutting efficiency and cutting quality, and extending the service life of the cutting blades.

[0024] 4. By optimizing the structural design of the crushing chamber, such as the upper and lower sections being inclined inwards on both sides, and the lower section inlet being smaller than the upper section outlet, the straw is fully in contact with the multi-segment cutting blades in the middle section, which helps to prevent the straw from clogging or tangling during the crushing process, thus improving the stability and reliability of the equipment. Attached Figure Description

[0025] Figure 1 A schematic diagram of the overall structure of a straw crushing device for biomass power generation provided by this utility model;

[0026] Figure 2 A side anatomical diagram of the crushing chamber and feeding section of a straw crushing device for biomass power generation provided by this utility model;

[0027] Figure 3 A schematic diagram of the cutter of a straw crushing device for biomass power generation provided by this utility model;

[0028] Figure 4 A schematic diagram of a multi-segment cutting blade for a straw crushing device for biomass power generation provided by this utility model.

[0029] Legend: 1. Main body of the crushing equipment;

[0030] 2. Feed inlet; 21. Receiving rack;

[0031] 3. Crushing chamber; 31. Maintenance door; 32. Material guide rack;

[0032] 4. Feeding section;

[0033] 5. Straw stacking pusher plate; 51. Feeding cylinder;

[0034] 6. Multi-stage cutting tools; 61. Cutting blades;

[0035] 7. Cutting knife;

[0036] 8. Downward-pressing cylinder;

[0037] 9. Straw conveyor belt. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0039] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] Example 1

[0043] like Figure 1-4 As shown, this utility model provides a technical solution: a straw crushing device for biomass power generation, including a crushing equipment body 1, a feed inlet 2 at the top of one end of the crushing equipment body 1, and a crushing chamber 3 at the bottom of the other end, with the feed inlet 2 and the crushing chamber 3 connected to form a feeding section 4;

[0044] The feed inlet 2 is provided with a straw stacking pusher 5 facing the feeding section 4. The end of the straw stacking pusher 5 away from the feeding section 4 is fixed to the output end of the feeding cylinder 51. The extension distance of the feeding cylinder 51 depends on the required thickness of the straw stack cutting.

[0045] The crushing chamber 3 is designed with three sections: upper, middle, and lower. A multi-segment cutting blade 6 is installed in the middle section.

[0046] Among them, the upper and lower sections of the crushing chamber 3 are arranged with their sides inclined inward, and the inlet of the lower section is smaller than the outlet of the upper section. The middle section is located between the upper and lower sections, and the side of the middle section is circular.

[0047] The multi-segment cutting blade 6 is installed horizontally in the middle section of the crushing chamber 3.

[0048] A cutter 7 is installed in the feeding section 4 near the inlet 2. The cutter 7 faces the bottom of the feeding section 4, and its top is fixed to the output end of the pressure cylinder 8 installed at the top of the crushing equipment body 1. Straw conveyor belts 9 are installed on the side of the cutter 7 away from the inlet 2 above and below the feeding section 4. The continuous operation of the straw conveyor belts 9 at the upper and lower ends ensures the continuous feeding of straw and improves the crushing efficiency.

[0049] It should be noted that after the cutter 7 presses down, the cut straw (referred to as straw flakes here) falls onto the straw conveyor belt 9 and is guided and transported to the crushing chamber 3.

[0050] Example 2

[0051] like Figure 1-4 As shown, a receiving frame 21 is provided at the top of the feed inlet 2 away from the feeding section 4. The size of the receiving frame 21 is larger than that of the feed inlet 2 and it is inclined towards the inside of the feed inlet 2. Because the size of the receiving frame 21 is larger than that of the feed inlet 2 and it is inclined towards the inside of the feed inlet 2, the straw can smoothly slide into the feed inlet 2.

[0052] It should be noted that the size of the straw stacking pusher plate 5 is smaller than the size of the feeding section 4 inside the main body 1 of the crushing equipment, so as to ensure that the straw stacking pusher plate 5 can enter the feeding section 4. In order to ensure that the straw stacking pusher plate 5 has sufficient thrust, the number of feeding cylinders 51 is no less than four, which are installed on the outside of the main body 1 of the crushing equipment, with the output end facing the feeding section 4.

[0053] Specifically, the straw is crushed and cut by a multi-segment cutting tool 6 with several cutting blades 61 installed at equal intervals around it, and driven by a motor installed on the outside of the main body 1 of the crushing equipment.

[0054] When the multi-segment cutting blade 6 is replaced or malfunctions, the maintenance door 31 connected to the outer hinge of the crushing chamber 3 is opened for maintenance.

[0055] The bottom of the crushing chamber 3 is sloping and extends to the outside where a guide frame 32 is installed.

[0056] The working process of this utility model is as follows: When using a straw crushing device for biomass power generation, the motor is first turned on to make the multi-segment cutting blade 6 start rotating. The straw pile to be crushed is put into the feed inlet 2 through an external device (suspended feeding, conveyor belt feeding). The feeding cylinder 51 pushes the straw pile push plate 5 to feed the straw into the feeding section 4. At the same time, the downward pressing cylinder 8 is started to drive the cutter 7 to descend and perform preliminary cutting on the straw. The cutting edge of the cutter 7 faces the bottom of the feeding section 4, which can cut the straw into thinner flakes, which is convenient for subsequent crushing. The straw after preliminary cutting (here called straw flakes) is transported to the entrance of the crushing chamber 3 through the straw conveyor belt 9. The straw entering the crushing chamber 3 is first guided to the middle section through the upper section. Here, the multi-segment cutting blade 6 is installed. Driven by the motor, the straw is cut and crushed multiple times. The crushed straw is discharged through the outlet of the lower section of the crushing chamber 3. The discharged crushed material is guided out through the inclined bottom of the crushing chamber 3 and the guide frame 32.

[0057] Through the above workflow, the straw crushing device for biomass power generation of this utility model can efficiently and stably complete the straw crushing task, providing strong support for the utilization of biomass energy.

[0058] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A straw breaking device for biomass power generation, comprising a breaking device main body (1), characterized in that: The crushing equipment body (1) is provided with an inlet (2) at one end top, and a crushing bin (3) at the other end bottom, the inlet (2) and the crushing bin (3) are communicated to form a feeding section (4); The inlet (2) is provided with a straw stacking push plate (5) towards the feeding section (4), and the straw stacking push plate (5) is fixed with the output end of a feeding cylinder (51) away from the feeding section (4); The crushing bin (3) is designed into three sections, and a multi-section cutting tool (6) is installed in the middle section; A cutter (7) is installed in the feeding section (4) close to the inlet (2), the cutter (7) is fixed with the output end of a pressing cylinder (8) installed at the top end of the crushing equipment body (1) and has a cut opening towards the bottom of the feeding section (4), and straw conveying belts (9) are installed above and below the cutter (7) away from the inlet (2) in the feeding section (4).

2. The straw crushing device for biomass power generation according to claim 1, characterized in that: The top end of the inlet (2) away from the feeding section (4) is provided with a receiving rack (21), and the receiving rack (21) is larger than the inlet (2) and is inclined towards the inlet (2).

3. The straw crushing device for biomass power generation according to claim 1, characterized in that: The size of the straw stacking push plate (5) is smaller than the size of the feeding section (4) in the crushing equipment body (1), and the number of the feeding cylinders (51) is not less than four and is installed on the outside of the crushing equipment body (1) with the output end towards the feeding section (4).

4. The straw crushing device for biomass power generation according to claim 1, characterized in that: The multi-section cutting tool (6) is provided with a plurality of cutting blades (61) equidistantly arranged around the multi-section cutting tool (6) and is driven by a motor installed on the outside of the crushing equipment body (1).

5. The straw crushing device for biomass power generation according to claim 1, characterized in that: The upper section and the lower section of the crushing bin (3) are inclined towards the inside, the inlet of the lower section is smaller than the outlet of the upper section, the middle section is between the upper section and the lower section, and the side surface of the middle section is circular.

6. The straw crushing device for biomass power generation according to claim 5, characterized in that: The multi-section cutting tool (6) is transversely installed in the middle section of the crushing bin (3).

7. The straw crushing device for biomass power generation according to claim 1, characterized in that: The outside of the crushing bin (3) is hingedly connected with a maintenance door (31).

8. The straw crushing device for biomass power generation according to claim 1, characterized in that: The bottom of the crushing bin (3) is designed to be inclined and extended to the outside to be provided with a guide rack (32).

Images