Granulation cutter head with limiting disc

Abstract

The pelletizing cutter head comprises a cutter head seat and the limiting disc, a groove body is formed in the middle of the front side face of the cutter head seat, and the limiting disc is annular and coaxially fixed to the front side face of the cutter head seat through a plurality of first bolts. A plurality of screw holes for fixing the pelletizing cutters are formed in the front side surface of the cutter head seat; and cutter handles of the pelletizing cutters are propped against the limiting disc. The cutter head is divided into the cutter head seat and the limiting disc, and the groove body is formed in the middle of the front side of the cutter head seat, so that the purpose of reducing the weight of the cutter head seat is achieved, and the stability of the cutter head in the working process is improved.

Description

Technical Field

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

[0002] With the rapid development of the economy, the role of the petrochemical industry in society has become increasingly significant and important, and the demand for products is increasing. As a result, many large-scale extrusion granulation systems have been introduced into China. The pelletizer disc is one of the key components of large-scale extrusion granulation units. It is the carrier that installs and drives the pelletizer to move axially and rotate along the axis to cut pellets. With the increase in production capacity, it is necessary to improve the pelletizing efficiency of the pelletizer. The usual way to do this is to increase the number of pelletizers on the pelletizer disc. However, this will lead to an increase in the overall weight of the disc and pelletizers. Since the disc rotates at high speed when the pelletizer is working, driving the pelletizer to move quickly, the excessive weight of the disc and pelletizers will reduce the stability of the equipment and increase the failure rate of the equipment. Utility Model Content

[0003] The purpose of the present invention is to provide a pelletizing cutter disc with a limiting disc, which is split into a cutter disc seat and a limiting disc and opens a groove in the middle position of the front side of the cutter disc seat to reduce the weight of the cutter disc seat, thereby improving the stability of the present invention during operation.

[0004] The technical solution adopted by the present invention to solve the above problems is:

[0005] A pelletizing knife disc with a limiting disc comprises a knife disc seat and a limiting disc. A groove body is provided in the middle position of the front side surface of the knife disc seat. The limiting disc is annular and is fixed to the front side surface of the knife disc seat coaxially through a plurality of first bolts. A plurality of screw holes for fixing the pelletizing knife are provided on the front side surface of the knife disc seat, and the handle of the pelletizing knife rests on the limiting disc.

[0006] In the above technical solution, preferably, the trough body is cylindrical, a positioning plate is inserted in the trough body, and the positioning plate is fixed to the cutter disc seat by a number of second bolts. The front and rear widths of the positioning plate are greater than the depth of the trough body, and the arc-shaped side surface of the trough body and the inner arc surface of the limit plate are simultaneously fitted with the arc-shaped side surface of the positioning plate.

[0007] In the above technical solution, preferably, a circular cylindrical groove is provided on the rear side of the positioning plate, and the second bolts are divided into one group arranged on the outside of the groove and another group arranged on the inside of the groove. Both groups of second bolts are distributed in a circular shape with equal intervals, and a through hole is provided in the middle position of the positioning plate.

[0008] In the above technical solution, preferably, a plurality of mounting grooves are provided on the limiting plate in a circular shape at equal intervals, and the handle of the pelletizer is fitted with the side of the mounting groove.

[0009] In the above technical solution, preferably, the limiting plate is provided with a plurality of grooves corresponding to the mounting grooves one by one, and the grooves are arranged on the front side of the mounting groove and the movement direction of the pelletizer.

[0010] In the above technical solution, preferably, a plurality of hoisting holes distributed in a circular shape and at equal intervals are provided on the rear side of the cutter head seat.

[0011] In the above technical solution, preferably, the rear end of the screw hole is in the shape of a countersunk hole.

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

[0013] The pelletizer knife of the utility model is fixed to the cutter disc seat through the screw hole on the cutter disc seat, and the limit plate is pressed against the cutter handle of the pelletizer knife to play the role of limiting support for the pelletizer knife, thereby reducing the deformation of the pelletizer knife during operation and the probability of loosening between the pelletizer knife and the cutter disc seat. At the same time, by providing a groove at the middle position of the front side of the cutter disc seat, the purpose of reducing the weight of the cutter disc seat is achieved while ensuring the normal operation of the utility model, thereby improving the stability of the utility model during operation and reducing the failure rate of the pelletizer equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a pelletizing cutter disc with a limiting disc in an embodiment of the present utility model.

[0015] Figure 2 yes Figure 1 side sectional view of .

[0016] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0017] Figure 4 yes Figure 1 Schematic diagram of the back structure of the middle positioning plate.

[0018] Figure 5 yes Figure 1 Schematic diagram of the structure after installing the pelletizer.

[0019] Figure 6 yes Figure 4 Enlarged view of point B in the middle.

[0020] Figure 7 yes Figure 1 Schematic diagram of the back structure.

[0021] Among them, the cutter disc seat 1, the groove body 11, the screw hole 12, the lifting hole 13, the limit plate 2, the first bolt 21, the mounting groove 22, the groove 23, the pelletizer 3, the handle 31, the rear side 32, the front side 33, the positioning plate 4, the second bolt 41, the groove 42, and the through hole 43. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-Figure 7 The present embodiment provides a pelletizing cutter disc with a limiting disc, comprising a cutter disc seat 1 and a limiting disc 2. A groove 11 is provided in the middle position of the front side surface 33 of the cutter disc seat 1. The limiting disc 2 is annular and is coaxially fixed to the front side surface 33 of the cutter disc seat 1 through a plurality of first bolts 21. A plurality of screw holes 12 for fixing the pelletizing knife 3 are provided on the front side surface 33 of the cutter disc seat 1, and the handle 31 of the pelletizing knife 3 rests on the limiting disc 2.

[0024] The pelletizer 3 of the present invention is fixed to the cutter disc seat 1 through the screw hole 12 on the cutter disc seat 1, and the limit plate 2 is pressed against the handle 31 of the pelletizer 3 to support the pelletizer 3, thereby reducing the deformation of the pelletizer 3 during operation and the probability of loosening between the pelletizer 3 and the cutter disc seat 1. At the same time, by providing a groove 11 in the middle position of the front side of the cutter disc seat 1, the weight of the cutter disc seat 1 is reduced while ensuring the normal operation of the present invention, thereby improving the stability of the present invention during operation and reducing the failure rate of the pelletizer equipment.

[0025] See also Figure 1-Figure 3 The trough body 11 is cylindrical, and a positioning plate 4 is inserted into the trough body 11. The positioning plate 4 is fixed to the cutter disc seat 1 by a plurality of second bolts 41. The front and rear widths of the positioning plate 4 are greater than the depth of the trough body 11. The arcuate side surfaces of the trough body 11 and the inner arc surface of the limit plate 2 are simultaneously fitted with the arcuate side surfaces of the positioning plate 4.

[0026] Since the limiting plate 2 supports the pelletizer 3, the external force applied to the pelletizer 3 when working will be transmitted to the limiting plate 2. Since the limiting plate 2 is in a circular shape and its middle position is hollow, the limiting plate 2 is easily damaged by the action of the external pressure. Therefore, in the present invention, the positioning plate 4 is fixed in the groove body 11, and the positioning plate 4 fits with the curved side of the groove body 11 to improve the stability of the positioning plate 4 fixed in the groove body 11. The positioning plate 4 fits with the curved side of the limiting plate 2 to support the limiting plate 2, thereby reducing the deformation degree of the limiting plate 2 and improving the service life of the limiting plate 2.

[0027] See also Figure 2 、 Figure 4 The rear side surface 32 of the positioning plate 4 is provided with a circular cylindrical groove 42, and the second bolts 41 are divided into a group arranged on the outside of the groove 42 and another group arranged on the inside of the groove 42. The two groups of second bolts 41 are distributed in a circular shape with equal intervals, and a through hole 43 is provided in the middle position of the positioning plate 4.

[0028] By opening a groove 42 on the rear side surface 32 of the positioning plate 4 and a through hole 43 in the middle position, the weight of the positioning plate 4 can be reduced. At the same time, two sets of second bolts 41 are used to fix the inner and outer sides of the groove 42 respectively, thereby improving the firmness of the connection between the positioning plate 4 and the cutter disc seat 1 and reducing the deformation of the groove 42 when the positioning plate 4 is squeezed by external force. At the same time, the weight of the positioning plate 4 is reduced by the groove 42 and the through hole 43, thereby reducing the overall weight of the utility model and improving the stability during operation.

[0029] See also Figure 1 、 Figure 5 The limiting plate 2 is provided with a plurality of mounting grooves 22 at equal intervals in a circular shape, and the handle 31 of the pelletizing knife 3 fits with the side of the mounting groove 22.

[0030] By inserting the handle 31 of the pelletizer knife 3 into the mounting groove 22 and then fixing the pelletizer knife 3 to the cutter disc seat 1 with bolts, when the pelletizer knife 3 is squeezed and deformed by external force during operation, the side of the mounting groove 22 can support and fix the pelletizer knife 3, thereby reducing the deformation of the pelletizer knife 3 and the probability of loosening of the bolts used to fix the pelletizer knife 3 to the cutter disc seat 1, reducing the failure rate of the utility model, and reducing the weight of the limit plate 2.

[0031] See also Figure 1 、 Figure 5 as well as Figure 6 The limiting plate 2 is provided with a plurality of grooves 23 corresponding to the mounting grooves 22 , and the grooves 23 are arranged on the front side of the mounting grooves 22 and the movement direction of the pelletizer 3 .

[0032] Since the cutter disc seat 1 rotates clockwise when the present invention is in use, the pelletizer 3 makes a clockwise circular motion around the center of the cutter disc seat 1 under the action of the cutter disc seat 1, and the handle 31 of the pelletizer 3 is against the limit plate 2, wherein the pelletizer 3 is subjected to a resistance in the opposite direction of its movement, so that the stress between the pelletizer 3 and the limit plate 2 is mainly concentrated on the rear side surface 32 of the handle 31. Therefore, the limit plate 2 at the rear side surface 32 of the handle 31 will be subjected to greater stress, and the limit plate 2 at the front side surface 33 of the handle 31 will be subjected to less stress. Therefore, in the present invention, a groove 23 is provided on the limit plate 2 at the front side surface 33 of the handle 31, so that the limit plate 2 can ensure that the limit plate 2 can provide a stable support for the pelletizer 3 while reducing the weight of the limit plate 2.

[0033] See also Figure 7 The rear side of the cutter head seat 1 is provided with a plurality of circular hoisting holes 13 distributed at equal intervals, thereby facilitating the transportation and installation of the utility model as a whole and reducing the weight of the cutter head seat 1.

[0034] The rear end of the screw hole 12 is in the shape of a countersunk hole, so that when the pelletizer 3 is fixed to the cutter disc seat 1 by a bolt, the head end of the bolt can enter the countersunk hole, which can improve the stability of the connection between the bolt and the screw hole 12. At the same time, when the utility model works with underwater pelletizing, it can avoid the head of the bolt being exposed to the outside of the cutter disc seat 1 and being subject to the resistance of the cooling water, thereby reducing the resistance of the cooling water to the cutter disc seat 1 and the risk of the bolt loosening due to the resistance of the cooling water, thereby ensuring the stable operation of the utility model.

[0035] 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 pelletizing cutter disc with a limiting disc, characterized by: It includes a cutter disc seat and a limiting plate. A groove is provided in the middle position of the front side of the cutter disc seat. The limiting plate is annular and is fixed to the front side of the cutter disc seat coaxially through a plurality of first bolts. A plurality of screw holes for fixing the pelletizer are provided on the front side of the cutter disc seat, and the handle of the pelletizer knife rests on the limiting plate.

2. The pelletizing cutter disc with a limiting disc according to claim 1 is characterized in that: The trough body is cylindrical, and a positioning plate is inserted into the trough body. The positioning plate is fixed to the cutter disc seat by a plurality of second bolts. The front and rear widths of the positioning plate are greater than the depth of the trough body. The arcuate side surface of the trough body and the inner arc surface of the limit plate are simultaneously fitted with the arcuate side surface of the positioning plate.

3. The pelletizing cutter disc with a limiting disc according to claim 2 is characterized in that: The rear side of the positioning plate is provided with a circular cylindrical groove, and the second bolts are divided into one group arranged outside the groove and another group arranged inside the groove. Both groups of second bolts are distributed in a circular shape with equal intervals, and a through hole is provided in the middle position of the positioning plate.

4. The pelletizing cutter disc with a limiting disc according to claim 1 is characterized in that: The limiting plate is provided with a plurality of mounting grooves at equal intervals in a circular shape, and the handle of the pelletizing knife fits into the side surfaces of the mounting grooves.

5. The pelletizing cutter disc with a limiting disc according to claim 4 is characterized in that: The limiting plate is provided with a plurality of grooves corresponding to the mounting grooves one by one, and the grooves are arranged on the front side of the mounting groove and the movement direction of the pelletizer.

6. The pelletizing cutter disc with a limiting disc according to claim 1 is characterized in that: The rear side of the cutter head seat is provided with a plurality of hoisting holes which are distributed in a circular shape and at equal intervals.

7. The pelletizing cutter disc with a limiting disc according to claim 1 is characterized in that: The rear end of the screw hole is in the shape of a countersunk hole.

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