Straw cell wall breaking and pulping equipment

Abstract

This invention solves the problem of insufficient uniformity in straw grinding in a single-layer grinding area, relating to the field of cell wall breaking and pulping technology, and particularly to straw cell wall breaking and pulping equipment. It includes a crushing mechanism, a collecting cylinder installed at the bottom of the crushing mechanism, a grinding component inside the collecting cylinder, a pipe assembly for spraying water onto the grinding component fitted into the collecting cylinder, and an outlet pipe inserted into the side of the collecting cylinder. The grinding component includes a positioning grinding disc installed in the middle of the collecting cylinder, and a grinding sleeve rotatably installed inside the collecting cylinder that fits with the positioning grinding disc. Multiple grinding areas are formed between the grinding sleeve and the positioning grinding disc. A gear ring is fitted on the outer surface of the grinding sleeve, and a drive structure connected to the gear ring is installed on the outer surface of the collecting cylinder. This invention, by combining a crushing mechanism and a grinding component, and forming multiple grinding areas within the grinding component, allows for finer processing of straw, achieving a higher fineness through gradual refinement.

Description

Technical Field

[0001] This utility model relates to the field of cell wall breaking and pulping technology, specifically to straw cell wall breaking and pulping equipment. Background Technology

[0002] Reed stalks are characterized by their toughness, high fiber content, and good plasticity. Using reed powder as raw material, high-grade reed pulp and bio-based degradable products can be produced, effectively replacing traditional plastic products. During the conversion of reed stalks into plastic products, mechanical cell wall breaking is necessary to ensure better exposure of the fibers, thereby improving the utilization rate of the fibers and making it easier to extract the effective components from the stalks.

[0003] When grinding straw in a conventional single-layer grinding zone, the release and separation of fibers are relatively poor because only one grinding layer is active. Furthermore, in a single-layer grinding zone, the straw may only come into contact with one grinding surface, resulting in uneven grinding and the presence of larger particles. Additionally, straw fibers tend to entangle after being broken up, forming large fiber clumps that affect the subsequent pulping process. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a straw cell wall breaking and pulping equipment to solve the problem of insufficient uniformity of straw grinding in a single-layer grinding zone mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a straw cell wall breaking and pulping equipment, including a crushing mechanism, a collecting cylinder installed at the bottom of the crushing mechanism, a grinding component inside the collecting cylinder, a pipeline component for spraying water onto the grinding component fitted into the collecting cylinder, and an outlet pipe inserted into the side of the collecting cylinder.

[0006] The grinding assembly includes a positioning grinding disc installed in the middle of the collecting cylinder, and a grinding sleeve that fits the positioning grinding disc is rotatably installed inside the collecting cylinder. Multiple grinding areas are formed between the grinding sleeve and the positioning grinding disc, and adjacent grinding areas are interconnected. A gear ring is fitted on the outer surface of the grinding sleeve, and a drive structure that is connected to the gear ring is installed on the outer surface of the collecting cylinder.

[0007] Preferably, the positioning grinding disc includes a vertical column installed on the bottom wall of the collecting cylinder, a conical body installed on the top of the vertical column, and two carrier rings fixedly sleeved on the outer surface of the vertical column, with through grooves opened on the carrier rings.

[0008] Preferably, the grinding sleeve consists of three grinding rings arranged vertically, with an inlet on the uppermost grinding ring and the top surface of the uppermost grinding ring sloping downwards from the outer edge to the inner edge.

[0009] Preferably, a scraper is installed on the conical body, and the bottom inclination of the scraper is adapted to the top inclination of the uppermost grinding ring.

[0010] Preferably, the other two grinding rings are provided with flat grooves, and the two flat grooves are arranged in a staggered manner. A gap groove with a right-angled trapezoidal cross-section is provided between two adjacent grinding rings, and a filter screen is provided on the flat groove.

[0011] Preferably, the piping assembly includes an annular pipe embedded in the inner wall of the collecting cylinder, an inlet pipe connected to the outer wall of the collecting cylinder and communicating with the annular pipe, and a plurality of nozzles connected to the bottom wall of the annular pipe.

[0012] Preferably, the inner wall of the collecting cylinder is fitted with an inclined plate located below the grinding sleeve, and the lowest point of the inclined plate is higher than the bottom wall of the outlet tube.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses a crushing mechanism to transform straw from strips into fine fragments, and then uses a grinding component to transform the finely fragmented straw into powder. The grinding component has multiple grinding zones, which allows the straw to be processed more finely and achieves a higher fineness through gradual refining.

[0015] 2. This utility model extends the area of ​​straw particle grinding by working in multiple grinding zones in a coordinated manner, and with the help of a filter screen, it intercepts larger straw particles in several grinding zones, ensuring that the grinding is thorough. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the collection cylinder and pipeline assembly of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the collection cylinder of this utility model;

[0019] Figure 4 This is a schematic diagram of the grinding assembly of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the positioning grinding disc of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the grinding sleeve of this utility model.

[0022] In the diagram: 1. Crushing mechanism; 2. Collection cylinder; 201. Inclined panel; 3. Grinding assembly; 301. Positioning grinding disc; 3011. Vertical column; 3012. Conical body; 3013. Carrier ring; 3014. Through groove; 3015. Scraper; 302. Grinding sleeve; 3021. Grinding ring; 3022. Inlet; 3023. Flat groove; 303. Gear ring; 304. Drive structure; 4. Pipeline assembly; 401. Annular pipe; 402. Inlet pipe; 403. Nozzle; 5. Outlet pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6 This utility model proposes a straw cell wall breaking and pulping device. The device includes a basic crushing mechanism 1, which is essentially the same as existing technology, consisting of a motor and crushing rollers. The motor drives two crushing rollers to rotate, breaking the straw between them into fine particles, which then fall directly into a collection cylinder 2 installed at the bottom of the crushing mechanism 1. The collection cylinder 2 contains a grinding component 3, and a water spraying pipeline assembly 4 is fitted into the collection cylinder 2. A discharge pipe 5 is inserted into the side of the collection cylinder 2. The grinding component 3 serves as a secondary crushing mechanism for straw cell wall breaking and pulping. Working in conjunction with the crushing mechanism 1, it maximizes the transformation of straw from strips to powder. During the grinding process, a set amount of water is sprayed into the grinding component 3 through an external water supply device connected to the pipeline assembly 4, causing the ground straw powder to form a slurry, which is then discharged through the discharge pipe 5.

[0025] Specifically, the grinding assembly 3 includes a positioning grinding disc 301 installed in the middle of the collecting cylinder 2. Inside the collecting cylinder 2, a grinding sleeve 302, which rotatably engages with the positioning grinding disc 301, is rotatably mounted. A gear ring 303 is fitted onto the outer surface of the grinding sleeve 302. A drive structure 304, which is connected to the gear ring 303, is mounted on the outer surface of the collecting cylinder 2. The drive structure 304 consists of a motor, a spur gear, and a V-belt. Its purpose is to drive the gear ring 303 to rotate according to a set program by operating the motor, in conjunction with the spur gear and V-belt, thereby controlling the grinding sleeve 302 to rotate along the positioning grinding disc 301, thus finely grinding the small straw between them. Furthermore, because multiple grinding zones are formed between the grinding sleeve 302 and the positioning grinding disc 301, each grinding zone has different grinding intensity and fineness, and adjacent grinding zones are interconnected. This multi-layered grinding allows for finer processing of the straw, especially when it is necessary to crush the straw into smaller particles, achieving a higher fineness through gradual refinement.

[0026] like Figures 3-6As shown, the positioning grinding disc 301 includes a vertical column 3011 installed on the bottom wall of the collecting cylinder 2, and a cone 3012 installed on the top of the vertical column 3011. The surface of the cone 3012 is inclined, so it is not easy for straw falling from above to accumulate and remain on its surface. Two carrier rings 3013 are fixedly fitted on the outer surface of the vertical column 3011. The carrier rings 3013 have through grooves 3014. The grinding sleeve 302 is composed of three grinding rings 3021 arranged vertically. The uppermost grinding ring 3021 has a feeding port 3022. The top surface of the uppermost grinding ring 3021 is inclined downward from the outer edge to the inner edge. A scraper 3015 is installed on the conical body 3012. The bottom inclination of the scraper 3015 is matched with the top inclination of the uppermost grinding ring 3021. There is a spacing between the bottom of the scraper 3015 and the top surface of the uppermost grinding ring 3021 that is smaller than the size of the fine straw particles. The other two grinding rings 3021 each have flat slots 3023, which are staggered vertically to prevent the fine straw from falling directly to the bottom layer when the flat slots 3023 overlap with the through slots 3014. A gap groove with a right-angled trapezoidal cross-section is provided between adjacent grinding rings 3021, and a filter screen is installed on the flat slots 3023. In practical application, the straw processed by the upper crushing mechanism 1 falls straight down and lands on the conical body 3012 and in the gap between it and the upper layer of the grinding sleeve 302. The straw on the conical body 3012 slides down its inclined outer wall to the top surface of the uppermost grinding ring 3021. Since the top surface of this grinding ring 3021 slopes downwards from its outer edge to its inner edge, the fine straw on its upper surface accumulates at the lowest point. As the driving structure 304 controls the grinding sleeve 302 to rotate at a constant speed relative to the positioning grinding disc 301, the scraper 3015 will rotate relative to the uppermost grinding ring 3021, thereby pushing the fine straw accumulated on the upper surface of the uppermost grinding ring 3021 downwards along the feeding port 3022, causing this part of the fine straw to enter the first grinding area in the grinding assembly 3. Subsequently, as the grinding sleeve 302 continues to rotate, the flat groove 3023 coincides with the through groove 3014, and the fine straw in the first grinding area will also fall continuously downwards along the flat groove 3023 to the second grinding area, and then repeat the falling until it is finally discharged from the grinding assembly 3.

[0027] Each flat slot 3023 has a filter screen on its upper layer. The filter screen is used to intercept larger straw particles in the grinding area of ​​that layer, so that they can continue to be ground in that layer until they are qualified, and then they can fall through the filter screen of that layer to the next grinding area.

[0028] like Figure 1 and Figure 2As shown, the pipeline assembly 4 includes an annular pipe 401 embedded in the inner wall of the collection cylinder 2, and a water inlet pipe 402 connected to the annular pipe 401 is inserted into the outer wall of the collection cylinder 2. Several nozzles 403 are connected to the bottom wall of the annular pipe 401. The nozzles 403 are arranged in a uniform annular shape, so that the sprayed water can be distributed relatively evenly on the top surface of the grinding assembly 3.

[0029] like Figure 3 As shown, the inner wall of the collecting cylinder 2 is equipped with an inclined plate 201 located below the grinding sleeve 302, and the lowest point of the inclined plate 201 is higher than the inner bottom wall of the outlet pipe 5. The inclined plate 201 accelerates the rate at which the straw slurry after grinding in the collecting cylinder 2 is discharged outward, and effectively reduces slurry residue.

[0030] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] 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 cell wall breaking and pulping equipment, comprising a crushing mechanism (1), characterized in that: The bottom of the crushing mechanism (1) is equipped with a collection cylinder (2), and a grinding component (3) is provided inside the collection cylinder (2). A pipeline assembly (4) for spraying water to the grinding component (3) is fitted into the collection cylinder (2), and an outlet pipe (5) is inserted into the side of the collection cylinder (2). The grinding assembly (3) includes a positioning grinding disc (301) installed in the middle of the collecting cylinder (2), and a grinding sleeve (302) that fits with the positioning grinding disc (301) is rotatably installed inside the collecting cylinder (2). A multi-layer grinding area is formed between the grinding sleeve (302) and the positioning grinding disc (301), and two adjacent grinding areas are interconnected. A gear ring (303) is sleeved on the outer surface of the grinding sleeve (302), and a drive structure (304) that is connected to the gear ring (303) is installed on the outer surface of the collecting cylinder (2).

2. The straw cell wall breaking and pulping equipment according to claim 1, characterized in that: The positioning grinding disc (301) includes a vertical column (3011) installed on the bottom wall of the collecting cylinder (2), a cone (3012) installed on the top of the vertical column (3011), and two carrier rings (3013) fixedly sleeved on the outer surface of the vertical column (3011), and through grooves (3014) are opened on the carrier rings (3013).

3. The straw cell wall breaking and pulping equipment according to claim 1, characterized in that: The grinding sleeve (302) consists of three grinding rings (3021) arranged vertically. The uppermost grinding ring (3021) has an inlet (3022) and the top surface of the uppermost grinding ring (3021) is inclined downward from the outer edge to the inner edge.

4. The straw cell wall breaking and pulping equipment according to claim 2, characterized in that: A scraper (3015) is installed on the cone (3012), and the bottom inclination of the scraper (3015) is adapted to the top surface inclination of the uppermost grinding ring (3021).

5. The straw cell wall breaking and pulping equipment according to claim 3, characterized in that: The other two grinding rings (3021) are provided with flat slots (3023), and the two flat slots (3023) are arranged in an up-down staggered manner. There is a gap groove with a right-angled trapezoidal cross section between two adjacent grinding rings (3021), and a filter screen is provided on the flat slots (3023).

6. The straw cell wall breaking and pulping equipment according to claim 1, characterized in that: The pipeline assembly (4) includes an annular pipe (401) embedded in the inner wall of the collection cylinder (2), an inlet pipe (402) connected to the outer wall of the collection cylinder (2) and communicating with the annular pipe (401), and a number of nozzles (403) connected to the bottom wall of the annular pipe (401).

7. The straw cell wall breaking and pulping equipment according to claim 1, characterized in that: The inner wall of the collecting cylinder (2) is fitted with an inclined plate (201) located below the grinding sleeve (302), and the lowest point of the inclined plate (201) is higher than the inner bottom wall of the outlet pipe (5).

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