Fixed type pelletizing cutter head with pelletizing cutter bodies

Abstract

The utility model discloses a fixed type pelletizing cutterhead with pelletizing cutter bodies, which comprises a cutterhead and a plurality of cutter bodies, the edge of the cutterhead is in the shape of a circular ring, and a plurality of extending parts extending outwards at equal intervals are arranged at the edge position of the cutterhead. The number of the cutter bodies is the same as that of the extension parts, the cutter bodies are circularly fixed on the front side surface of the edge of the cutter head at equal intervals, and the front side surfaces of the extension parts are propped against the rear side surfaces of the cutter bodies. According to the utility model, the extension part is arranged on the cutter head and is used for supporting the cutter body, so that the deformation quantity of the cutter body in the working process is reduced, and the purpose of improving the product quality is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pelletizing cutter disc structure design and application, in particular to a fixed pelletizing cutter disc with a pelletizing cutter body. Background Art

[0002] With the rapid development of the economy, the role of the petrochemical industry in society has become more and more obvious and important, and the demand for products is increasing. Therefore, many large-scale extrusion granulation systems have been introduced into China. The pelletizer disc is one of the important components of the large-scale extrusion granulation unit. It is a carrier that installs and drives the pelletizer to move forward and backward in the axial direction and rotate along the axis to cut pellets. Among them, the underwater pelletizer is one of the commonly used mechanical equipment in the field of plastic processing. During the plastic processing process, the molten polyethylene plastic is pressurized by the extruder, filtered out possible impurities by the screen changer, and then enters the multiple flow channels of the template through the diversion. Here, the material is accelerated to flow to the discharge end due to the gradual decrease in the flow channel diameter, and finally enters the pelletizing water chamber in a linear shape through the die hole. A cutter mechanism is installed at the material discharge port. The polyethylene entering the water chamber in a linear shape is tightly attached to the die surface and the high-speed rotating cutter mechanism is cut into polyethylene particles. The plastic particles are rapidly cooled and solidified by the cooling water in the water chamber to generate solid finished plastic particles, which are then transported to the centrifugal dryer by the cooling water for dehydration and drying.

[0003] With the improvement of product quality, the pelletizing accuracy of underwater extrusion pelletizing units has also increased accordingly. In existing underwater pelletizers, the pelletizer is only in contact with and fixed to the cutter disc through its handle, and the rest of the pelletizer is in a suspended state. The pelletizer is easily deformed after use, resulting in poor pelletizing effect, which in turn affects product quality. Utility Model Content

[0004] The purpose of the utility model is to provide a fixed pelletizing cutter disc with a pelletizing cutter body, which reduces the deformation of the cutter body during operation by arranging an extension portion on the cutter disc and supporting the cutter body through the extension portion, thereby achieving the purpose of improving product quality.

[0005] The technical solution adopted by the present invention to solve the above problems is:

[0006] A fixed pelletizing cutter disc with pelletizing blades comprises a cutter disc and a plurality of blades. The edge of the cutter disc is annular, and a plurality of extensions extending outward at equal intervals are provided at the edge of the cutter disc. The number of the blades is the same as the extensions, and the plurality of blades are fixed in a circular shape at equal intervals on the front side of the edge of the cutter disc, and the front side of the extension rests on the rear side of the blade.

[0007] In the above technical solution, preferably, the blade body includes a blade handle and a blade head, and the blade handle and the blade disc are respectively provided with corresponding blade handle screw holes and blade disc screw holes, and the blade head and the extension part are respectively provided with corresponding blade head screw holes and extension part screw holes.

[0008] In the above technical solution, preferably, the rear ends of the cutter head screw hole and the extension screw hole are both configured as stepped countersunk holes.

[0009] In the above technical solution, preferably, the extending direction of the extending portion is parallel to the installation direction of the blade body.

[0010] In the above technical solution, preferably, a plurality of hydraulic holes are provided on the cutter disc, and the hydraulic holes are inclined, and the angle between the direction of the hydraulic holes toward the front side of the cutter disc and the rotation direction of the cutter disc is an acute angle.

[0011] In the above technical solution, preferably, the extension portion and the cutter disc are formed in one piece, and the front side surface of the extension portion is flush with the front side surface of the edge of the cutter disc.

[0012] Compared with the prior art, the present invention has the following advantages and effects:

[0013] The utility model provides an extension part on the cutter disc so that the rear side surface of the cutter body can abut against the extension part, and the cutter body is supported by the extension part, thereby reducing the deformation of the cutter body during operation, improving the consistency of the length of particles formed by cutting by the cutter body, and achieving the purpose of improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a fixed pelletizing cutter disc with a pelletizing cutter body according to an embodiment of the present utility model.

[0015] Figure 2 yes Figure 1 Front view after installing the cutter body.

[0016] Figure 3 yes Figure 1 Schematic diagram of the back structure.

[0017] Figure 4 yes Figure 2 rear view.

[0018] Among them, there are a cutter disc 1, a cutter disc screw hole 11, a hydraulic hole 12, a cutter body 2, a cutter handle 21, a cutter head 22, a cutter handle screw hole 23, a cutter head screw hole 24, an extension part 3, and an extension part screw hole 31. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0020] See also Figures 1-4 The present embodiment provides a fixed pelletizing cutter disc with a pelletizing cutter body, comprising a cutter disc 1 and a plurality of cutter bodies 2. The edge of the cutter disc 1 is in a circular ring shape, and a plurality of extensions 3 extending outward at equal intervals are provided at the edge of the cutter disc 1. The number of the cutter bodies 2 is the same as the extensions 3, and the plurality of cutter bodies 2 are fixed in a circular shape and at equal intervals on the front side of the edge of the cutter disc 1, and the front side of the extension 3 rests on the rear side of the cutter body 2.

[0021] The present invention fixes the blade body 2 to the blade disc 1 and extends the blade body 2 to the outside of the edge of the blade disc 1. The blade body 2 needs to fit with the template on the front side of the blade disc 1, and the linear material is output in the template, so that when the blade disc 1 is driven to rotate, the blade body 2 can be driven to move to achieve continuous cutting of the linear material. When the blade body 2 moves, the template and the material will exert pressure on the blade body 2 in the direction of the blade disc 1, causing the blade body 2 to deform, resulting in inconsistent lengths of the cut particles, affecting product quality. Therefore, the present invention provides an extension part 3 on the blade disc 1, so that the rear side of the blade body 2 can rest against the extension part 3, and the blade body 2 is supported by the extension part 3, thereby reducing the deformation of the blade body 2 during operation, improving the consistency of the length of the particles cut by the blade body 2, and achieving the purpose of improving product quality.

[0022] See also Figure 1 The extension portion 3 is integrally formed with the cutter disc 1, which reduces the difficulty of manufacturing the cutter disc 1 and the extension portion 3, facilitates mass production, and improves the stability of the connection between the extension portion 3 and the cutter disc 1, reducing the risk of the extension portion 3 breaking and falling off the cutter disc 1. The front side of the extension portion 3 is flush with the front side of the edge of the cutter disc 1, so that the front side of the extension portion 3 and the front side of the edge of the cutter disc 1 can simultaneously fit with the rear side of the cutter body 2, thereby improving the support and fixing effect of the extension portion 3 and the cutter disc 1 on the cutter body 2.

[0023] See also Figure 1 、 Figure 2 The blade body 2 includes a blade handle 21 and a blade head 22. The blade handle 21 and the blade disc 1 are respectively provided with corresponding blade handle screw holes 23 and blade disc screw holes 11. The blade head 22 and the extension part 3 are respectively provided with corresponding blade head screw holes 24 and extension part screw holes 31.

[0024] During operation, the blade body 2 will also be subject to resistance formed by cooling water. The resistance of cooling water can be decomposed into resistance in the opposite direction of movement of the cutter head 22 and pressure toward the front side of the cutter disc 1, which will cause the cutter head 22 to deform in the opposite direction of movement and deform toward the front side of the cutter disc 1 respectively. Therefore, the utility model realizes a fixed connection between the blade handle 21 and the cutter disc 1 by screwing the same bolt into the blade handle screw hole 23 and the cutter disc screw hole 11, and realizes a fixed connection between the blade body 2 and the extension part 3 by screwing the same bolt into the blade head screw hole 24 and the extension part screw hole 31. Compared with the prior art method in which the blade body 2 is only fixedly connected by bolts between the blade handle 21 and the cutter disc 1, the utility model increases the fixed point of the blade body 2 by increasing the fixed connection between the extension part 3 and the blade head 22, thereby reducing the deformation of the blade body 2, which can improve product quality while reducing the frequency of replacing the blade head 22, thereby reducing the cost of replacing the blade head 22.

[0025] See also Figure 3 The rear ends of the cutter head screw hole 11 and the extension screw hole 31 are both configured as stepped countersunk holes.

[0026] When the present invention uses bolts to connect the cutter head 22 and the extension 3, as well as the shank 21 and the cutter disc 1, the bolts are screwed in from the cutter disc screw hole 11 and the extension screw hole 31, and then screwed into the shank screw hole 23 and the cutter head screw hole 24, respectively, so that the head of the bolt is located at the rear side of the cutter disc 1 and the extension 3, thereby preventing the head of the bolt from being located at the front side of the cutter body 2 and obstructing the cutting operation of the cutter body 2. The cutter disc screw hole 11 and the extension screw hole 31 are countersunk holes, allowing the head of the bolt to enter the countersunk holes, thereby preventing the head of the bolt from being exposed outside the cutter disc 1 and the extension 3 and being subject to the resistance of the cooling water when the cutter body 2 moves with the cutter disc 1, thereby reducing the resistance of the cooling water and the risk of the bolt loosening caused by the resistance of the cooling water, thereby ensuring the stable operation of the present invention.

[0027] See also Figure 4 The extension direction of the extension part 3 is parallel to the installation direction of the blade body 2, which makes it convenient to open the extension part screw hole 31 in the middle position of the extension part 3, thereby reducing the deformation of the extension part 3 caused by the stress of the bolt on the extension part 3 when the blade body 2 is working. At the same time, it can also increase the width of the extension part 3 to increase the area of ​​interaction between the extension part 3 and the blade body 2, thereby improving the support effect of the extension part 3 on the blade body 2.

[0028] See also Figure 2 、 Figure 3 The cutter disc 1 is provided with a plurality of hydraulic holes 12, which are inclined. The angle between the direction of the hydraulic holes 12 toward the front side of the cutter disc 1 and the rotation direction of the cutter disc 1 is acute.

[0029] The hydraulic holes 12 reduce the weight of the cutter disc 1, thereby improving the stability of the cutter disc 1 during rotation. The angle between the hydraulic holes 12 and the rotation direction of the cutter disc 1 is acute. When the cutter disc 1 rotates, it can produce a pumping effect on the water mixed with plastic particles, so that a high-speed water flow is formed between the front side of the cutter disc 1 and the discharge template. The water flow can flush the granulation surface of the template, allowing the plastic particles to quickly escape from the pelletizing area, effectively reducing the adhesion of plastic particles and ensuring the pelletizing effect.

[0030] The above contents described in this specification are merely examples of the present invention. Those skilled in the art of the present invention may make various modifications, additions, or substitute similar methods to the specific embodiments described, as long as they do not deviate from the contents of this specification or exceed the scope defined by the claims, and shall fall within the scope of protection of the present invention.

Claims

1. A fixed pelletizing cutter disc with a pelletizing cutter body, characterized in that: It includes a cutter disc and several cutter bodies. The edge of the cutter disc is in a circular shape. Several extensions extending outward at equal intervals are provided at the edge of the cutter disc. The number of the cutter bodies is the same as the extensions, and the several cutter bodies are fixed on the front side of the edge of the cutter disc in a circular shape with equal intervals. The front side of the extension rests on the rear side of the cutter body.

2. The fixed pelletizer disc with a pelletizer body according to claim 1, characterized in that: The knife body includes a knife handle and a knife head. The knife handle and the knife disc are respectively provided with corresponding knife handle screw holes and knife disc screw holes. The knife head and the extension are respectively provided with corresponding knife head screw holes and extension screw holes.

3. The fixed pelletizer disc with a pelletizer body according to claim 1, characterized in that: The rear ends of the cutter head screw hole and the extension screw hole are both configured as stepped countersunk holes.

4. The fixed pelletizer disc with a pelletizer body according to claim 1, characterized in that: The extending direction of the extending portion is parallel to the installation direction of the blade body.

5. The fixed pelletizer disc with a pelletizer body according to claim 1, characterized in that: The cutter disc is provided with a plurality of hydraulic holes, which are inclined, and an angle between the direction of the hydraulic holes toward the front side of the cutter disc and the rotation direction of the cutter disc is an acute angle.

6. The fixed pelletizer disc with a pelletizer body according to claim 1, characterized in that: The extension portion is integrally formed with the cutter disc, and the front side surface of the extension portion is flush with the front side surface of the edge of the cutter disc.

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