A crusher anti-blocking device
By installing round steel parts and a stable connection structure on the crusher's flying knife, the problem of clogging caused by circulating ash in the crusher was solved, achieving stable operation of the equipment and reducing the frequency of maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN LANGJIU CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-06-02
AI Technical Summary
In the semi-dry flue gas desulfurization tower, the crusher is blocked and jammed due to the moisture content of the circulating ash, which leads to motor burnout and frequent maintenance.
The first and second round steel parts are vertically arranged on the blade and reinforcing rib plate of the flying knife to disperse the shearing ash and prevent blockage. The snap-fit structure of the truncated pyramid and through hole ensures a stable connection between the flying knife and the central shaft.
It effectively prevents crusher blockage, reduces maintenance frequency, improves equipment operating efficiency, and ensures stable operation of the flying knife over a long period of time.
Smart Images
Figure CN224308551U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of crusher technology, and in particular relates to a crusher anti-blocking device. Background Technology
[0002] When a semi-dry flue gas desulfurization tower is in operation, the crusher of the ash conveying device at the bottom of the tower often experiences blockages and jamming due to the moisture content of the circulating ash. This can lead to the burnout of the crusher's motor, thereby increasing the frequency of crusher maintenance. Utility Model Content
[0003] To overcome the shortcomings of the prior art, this utility model provides a crusher anti-blocking device that can prevent the crusher from clogging.
[0004] The objective of this utility model is achieved through the following technical solution:
[0005] A crusher anti-clogging device is provided. The crusher includes a fly knife, which includes a bushing and a plurality of blades evenly arranged around the bushing. The crusher anti-clogging device includes a plurality of first round steel components, each of which includes a plurality of first round steel parts respectively vertically arranged on the plurality of blades.
[0006] The beneficial effects of adopting the above technical solution are as follows: all blades of the flying knife are vertically equipped with first round steel parts. That is, during the rotation of the flying knife, these first round steel parts can shear the ash clumps formed by the circulating ash and disperse and reduce them, thereby preventing the crusher from getting blocked and reducing the maintenance frequency of the crusher.
[0007] Furthermore, several first round steel parts of the same first round steel assembly are evenly arranged along the circumference of the bushing.
[0008] The beneficial effect of adopting the above technical solution is that this setting makes the force more uniform.
[0009] Furthermore, the crusher anti-blocking device includes several second round steel components, the crusher includes several reinforcing ribs, and reinforcing ribs are provided between adjacent blades. Each second round steel component includes several second round steel parts that are respectively vertically arranged on several reinforcing ribs.
[0010] The beneficial effects of adopting the above technical solution are as follows: all the reinforcing ribs of the flying knife are vertically equipped with second round steel parts. That is, during the rotation of the flying knife, these second round steel parts can also shear the ash clumps formed by the circulating ash and disperse and reduce them, thereby preventing the crusher from getting blocked and further reducing the maintenance frequency of the crusher.
[0011] Furthermore, several second round steel parts of the same second round steel assembly are evenly distributed along the circumference of the bushing.
[0012] The beneficial effect of adopting the above technical solution is that this setting makes the force more uniform.
[0013] Furthermore, one end of the first round steel piece and the second round steel piece are welded to the blade and the reinforcing rib plate, respectively.
[0014] Furthermore, the non-welded ends of both the first and second round steel parts are rounded.
[0015] The beneficial effect of adopting the above technical solution is that this setting reduces the shear resistance of the ash mass.
[0016] Furthermore, the bushing is provided with a through hole along the axial direction that is smaller at the top and larger at the bottom and is in the shape of a frustum. The crusher includes a central shaft, on which a frustum portion is provided for engaging with the through hole.
[0017] The beneficial effects of adopting the above technical solution are as follows: relying on the interlocking through holes and the frustum, except for the vertical downward movement of the central shaft relative to the bushing, all other movements of the central shaft are restricted by the bushing, which helps to make the connection between the central shaft and the bushing more reliable.
[0018] Furthermore, the dimensions of the frustum portion are matched with the dimensions of the through hole.
[0019] Furthermore, one end of the central shaft is provided with a threaded portion along the axial direction, and a fastening nut for fastening the central shaft to the bushing is threaded onto the threaded portion.
[0020] The beneficial effects of adopting the above technical solution are as follows: the fastening nut can fasten the central shaft to the bushing, and the interlocking truncated pyramid and through hole can ensure that the bushing is stably fixed to the central shaft, thereby ensuring that the flying knife does not shift during long-term operation, and the interlocking truncated pyramid and through hole can reduce the risk of the fastening nut loosening.
[0021] Furthermore, the threaded part is connected to two fastening nuts, with the lower fastening nut fitting against the upper end face of the bushing.
[0022] The beneficial effects of adopting the above technical solution are as follows: this setting increases the difficulty of the lower fastening nut becoming loose, thereby further improving the connection stability between the flying cutter and the central shaft.
[0023] The beneficial effects of this utility model are as follows:
[0024] All blades of the flying knife are vertically equipped with first round steel parts. During the rotation of the flying knife, these first round steel parts can shear the ash clumps formed by circulating ash and disperse and reduce them, thereby preventing the crusher from getting blocked and reducing the maintenance frequency of the crusher. Attached Figure Description
[0025] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.
[0026] in:
[0027] Figure 1 A schematic diagram of the structure of this utility model is shown;
[0028] Figure 2 An installation diagram of this utility model is shown;
[0029] Figure 3 This diagram shows the installation at the central shaft of the present invention.
[0030] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.
[0031] Figure label:
[0032] 1. Flying knife; 101. Blade; 102. Reinforcing rib; 103. Bushing; 2. First round steel part; 3. Second round steel part; 4. Through hole; 5. Central shaft; 501. Frustum part; 502. Threaded part; 6. Fastening nut; 7. Screen. Detailed Implementation
[0033] The present invention will be further described below with reference to the accompanying drawings.
[0034] This utility model provides a crusher anti-blocking device, such as Figure 1 As shown, the crusher includes a fly knife 1, which includes a bushing 103 and a plurality of blades 101 evenly arranged around the bushing 103. The crusher anti-blocking device includes a plurality of first round steel components, each of which includes a plurality of first round steel parts 2 respectively vertically arranged on the plurality of blades 101.
[0035] It is understandable that all blades 101 of the flying knife 1 are vertically equipped with first round steel parts 2. That is, during the rotation of the flying knife 1, these first round steel parts 2 can shear the ash clumps formed by the circulating ash and disperse and reduce them, thereby preventing the crusher from getting blocked and reducing the maintenance frequency of the crusher.
[0036] It should be noted that the electrical system of the crusher can be equipped with a bimetallic strip overheat protector for overheat protection.
[0037] In one embodiment, several first round steel pieces 2 of the same first round steel assembly are evenly distributed along the circumference of the bushing 103 to make the force more uniform.
[0038] In one embodiment, the crusher anti-blocking device includes a plurality of second round steel components, the crusher includes a plurality of reinforcing ribs 102, and reinforcing ribs 102 are provided between adjacent blades 101. Each second round steel component includes a plurality of second round steel parts 3 respectively vertically arranged on the plurality of reinforcing ribs 102.
[0039] It is understandable that all the reinforcing ribs 102 of the flying knife 1 are vertically provided with second round steel parts 3. That is, during the rotation of the flying knife 1, these second round steel parts 3 can also shear the ash clumps formed by the circulating ash and disperse and reduce them, thereby preventing the crusher from getting blocked and further reducing the maintenance frequency of the crusher.
[0040] In one embodiment, several second round steel parts 3 of the same second round steel assembly are evenly distributed along the circumference of the bushing 103 to make the force more uniform.
[0041] In one embodiment, one end of the first round steel piece 2 and the second round steel piece 3 are respectively welded to the blade 101 and the reinforcing rib plate 102.
[0042] It should be noted that the first round steel part 2 and the second round steel part 3 are both round steel with a diameter of 10mm and a length of 10cm, and the height of the weld is ≥3mm; in addition, the round steel can be made of 304 stainless steel, and the blades 101 on the flying knife 1 are wear-resistant blades to solve the compatibility problem of wet ash adhesion and wear.
[0043] In one embodiment, the non-welded ends of the first round steel member 2 and the second round steel member 3 are both chamfered with a radius of 2 to 3 mm to reduce the shear resistance of the ash mass.
[0044] In one embodiment, such as Figure 1-3 As shown, the bushing 103 has a through hole 4 that is smaller at the top and larger at the bottom and is in the shape of a frustum along the axial direction. The crusher includes a central shaft 5, and the central shaft 5 is provided with a frustum portion 501 for engaging with the through hole 4.
[0045] Understandably, by relying on the interlocking through hole 4 and the truncated pyramid 501, except for the vertical downward movement of the central shaft 5 relative to the bushing 103, all other movements of the central shaft 5 are restricted by the bushing 103, which helps to make the connection between the central shaft 5 and the bushing 103 more reliable.
[0046] It should be noted that the depth of through hole 4 is 25mm, the taper of through hole 4 is 1:10, and the mating surface between through hole 4 and frustum 501 should be smooth.
[0047] In one embodiment, the dimensions of the frustum portion 501 match the dimensions of the through hole 4.
[0048] In one embodiment, one end of the central shaft 5 is provided with a threaded portion 502 along the axial direction, and a fastening nut 6 for fastening the central shaft 5 to the bushing 103 is threadedly connected to the threaded portion 502.
[0049] Understandably, the fastening nut 6 can fasten the central shaft 5 to the bushing 103, so as to ensure that the bushing 103 is stably fixedly connected to the central shaft 5 by the interlocking truncated portion 501 and the through hole 4, thereby ensuring that the flying knife 1 does not shift during long-term operation, and the interlocking truncated portion 501 and the through hole 4 can reduce the risk of the fastening nut 6 loosening.
[0050] It should be noted that after the flying knife 1 is fastened to the central shaft 5, the distance between the flying knife 1 and the screen 7 is 2cm, so as to control the crushing gap.
[0051] In one embodiment, two fastening nuts 6 are threaded onto the threaded portion 502. The lower fastening nut 6 is attached to the upper end face of the bushing 103 to increase the difficulty of the lower fastening nut 6 loosening, thereby further improving the connection stability between the flying knife 1 and the central shaft 5.
[0052] This utility model is a modification based on the original crusher. The modification can be carried out during crusher maintenance, and the distance between the flying knife 1 and the screen 7 can be checked or calibrated by a ruler during the shutdown period.
[0053] In summary, this invention extends the operating time of the fly knife 1 that adheres to the edge of the ash clump, thereby improving the operating efficiency of the equipment; the frustum-shaped through hole 4 in this invention ensures that the fly knife 1 does not shift during long-term operation and that the clamping bolts do not loosen; this invention solves the problems of frequent crusher maintenance and frequent motor damage.
[0054] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0055] While specific embodiments of the present invention have been described herein with reference to them, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.
Claims
1. A crusher anti-clogging device, the crusher including a fly knife (1), the fly knife (1) including a bushing (103) and a plurality of blades (101) uniformly arranged in the circumferential direction of the bushing (103), characterized in that, It includes a plurality of first round steel components, each of which includes a plurality of first round steel pieces (2) respectively vertically disposed on a plurality of blades (101).
2. The anti-blocking device for a crusher according to claim 1, characterized in that, A plurality of the first round steel parts (2) of the same first round steel assembly are evenly arranged along the circumference of the bushing (103).
3. The anti-blocking device for a crusher according to claim 1, characterized in that, The crusher includes several second round steel components and several reinforcing ribs (102). The reinforcing ribs (102) are provided between two adjacent blades (101). Each second round steel component includes several second round steel parts (3) that are respectively vertically arranged on several reinforcing ribs (102).
4. The anti-blocking device for a crusher according to claim 3, characterized in that, Several second round steel parts (3) of the same second round steel assembly are evenly arranged along the circumference of the bushing (103).
5. A crusher anti-blocking device according to claim 3, characterized in that, One end of the first round steel part (2) and the second round steel part (3) are respectively welded to the blade (101) and the reinforcing rib plate (102).
6. A crusher anti-blocking device according to claim 5, characterized in that, The non-welded ends of the first round steel piece (2) and the second round steel piece (3) are both rounded.
7. A crusher anti-blocking device according to claim 1, characterized in that, The bushing (103) is provided with a through hole (4) that is smaller at the top and larger at the bottom and is in the shape of a frustum along the axial direction. The crusher includes a central shaft (5) and the central shaft (5) is provided with a frustum portion (501) for engaging in the through hole (4).
8. A crusher anti-blocking device according to claim 7, characterized in that, The dimensions of the frustum portion (501) match the dimensions of the through hole (4).
9. A crusher anti-blocking device according to claim 7, characterized in that, One end of the central shaft (5) is provided with a threaded portion (502) along the axial direction, and a fastening nut (6) for fastening the central shaft (5) to the bushing (103) is threaded onto the threaded portion (502).
10. A crusher anti-blocking device according to claim 9, characterized in that, Two fastening nuts (6) are threaded onto the threaded part (502), with the lower fastening nut (6) fitting against the upper end face of the bushing (103).