Material rake and coal screening machine

Abstract

The utility model relates to a material rake and a coal screening machine, the material rake comprises a rod body and a material rake head, the rod body is used for being connected with a spoke, and the rod body comprises a connecting part; the material rake head comprises a matching part detachably connected with the connecting part, and an auxiliary dismounting part is arranged on the material rake head, so that the mounting tool can drive the material rake head to be close to or away from the connecting part through the auxiliary dismounting part. The auxiliary dismounting part is arranged on the material rake head, so that a worker can use a mounting tool to drive the material rake head to be close to or far away from the connecting part on the rod body through the auxiliary dismounting part, dismounting and mounting of the material rake head and the rod body are facilitated, the time for replacing the material rake head is shortened, and the overhauling efficiency of the coal screening machine is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of thermal power generation, and particularly to a rake and a coal sieve machine. Background Art

[0002] Under the action of a rake, a coal sieve machine enables the coal entering the feed hopper to pass through the gaps of the sieve plate or move towards the outlet. Among them, the fine coal is pressed by the rake and enters the lower coal dropping pipe through the gaps of the sieve plate, while the un-screened coarse coal will enter the next-stage breaking equipment.

[0003] The rake head on the coal sieve machine will be worn after long-term use. When its wear amount reaches a preset value, the rake head needs to be replaced to ensure the normal operation of the double-rotary coal sieve machine. However, after long-term operation, the current rake head may have problems such as rusting and deformation, resulting in inconvenient disassembly and assembly of the rake head on the coal sieve machine, consuming manpower and material resources, prolonging the time for replacing the rake head, and affecting the maintenance efficiency of the coal sieve machine. Summary of the Utility Model

[0004] The purpose of the present disclosure is to provide a rake and a coal sieve machine to facilitate the disassembly and assembly of the rake head on the rake, thereby at least partially solving the above technical problems.

[0005] To achieve the above purpose, in the first aspect of the present disclosure, a rake is provided, including: a rod body for connecting with a spoke, including a connecting portion; and a rake head including a mating portion detachably connected to the connecting portion, and an auxiliary disassembly and assembly portion is provided on the rake head so that an installation tool can drive the rake head to approach or move away from the connecting portion through the auxiliary disassembly and assembly portion.

[0006] Optionally, the auxiliary disassembly and assembly portion includes a protrusion provided on the outer peripheral side of the rake head.

[0007] Optionally, the protrusion is configured as an annular protrusion surrounding the outer peripheral side of the rake head.

[0008] Optionally, an arc structure is formed at one end of the rake head facing away from the rod body, and the arc structure is used to push the material to move away from the rake head.

[0009] Optionally, the arc structure includes a right-angle surface and an arc surface. The right-angle surface is connected to the side of the auxiliary disassembly and assembly portion facing away from the rod body and extends along the side facing away from the auxiliary disassembly and assembly portion. The arc surface is connected to both ends of the right-angle surface; the arc structure is configured such that when the rod body drives the rake head to rotate, the arc surface can abut against the material.

[0010] Optionally, one of the rod body and the rake head can be sleeved on the other, so that the connecting portion and the mating portion can be connected by a locking member.

[0011] Optionally, the connecting portion and the mating portion are configured as through holes.

[0012] Optionally, there are two connecting portions and two mating portions. The two connecting portions are spaced apart and can be arranged in one-to-one correspondence with the two mating portions after one of the rod body and the rake head is sleeved on the other.

[0013] In a second aspect of the present disclosure, a coal screening machine is provided, including: a screening cylinder having a cavity; a spoke rotatably connected to the cavity; and the above-mentioned rake provided on the spoke.

[0014] Optionally, the rotation direction of the spoke is opposite to the rotation direction of the screening cylinder.

[0015] Through the above technical solutions, by providing an auxiliary disassembly and assembly portion on the rake head in the present disclosure, the staff can use the installation tool to drive the rake head to approach or move away from the connecting portion on the rod body through the auxiliary disassembly and assembly portion, so as to facilitate the disassembly and assembly of the rake head and the rod body, reduce the time for replacing the rake head, and improve the maintenance efficiency of the coal screening machine.

[0016] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0018] Figure 1 is a schematic structural view of the rake head provided by an embodiment of the present disclosure from a first angle;

[0019] Figure 2 is a schematic structural view of the rake head provided by an embodiment of the present disclosure from a second angle;

[0020] Figure 3 is a schematic structural view of the rod body of the rake head provided by an embodiment of the present disclosure;

[0021] Figure 4 is a schematic structural view of the fastener provided by an embodiment of the present disclosure;

[0022] Figure 5 is a schematic structural view of the mating connection between the rod body and the rake head provided by an embodiment of the present disclosure;

[0023] Figure 6 is a schematic structural view of the locking member provided by an embodiment of the present disclosure.

[0024] DESCRIPTION OF THE REFERENCE NUMERALS

[0025] 1 - Rod body; 11 - Connecting part; 2 - Material rake head; 21 - Arc structure; 211 - Right-angle surface; 212 - Arc surface; 22 - Fitting part; 3 - Auxiliary disassembly and assembly part; 31 - Protrusion; 4 - Sieve cylinder; 41 - Cavity; 5 - Spoke; 6 - Locking part. Detailed implementation manners

[0026] The following will describe the detailed implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the detailed implementation manners described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0027] In the present disclosure, unless otherwise stated, the orientation words "inside, outside" refer to "inside, outside" relative to the contour of the corresponding component itself. In addition, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure, and should not be construed as a limitation to the present disclosure.

[0028] The following will describe the material rake and the coal sieve machine in the exemplary embodiments of the present disclosure with reference to the accompanying drawings.

[0029] Refer to Figures 1 to 6As shown, in the first aspect of the present disclosure, a rake is provided, including a rod body 1 and a rake head 2. Among them, the rod body 1 is used to be connected to the spoke 5, and the rod body 1 includes a connecting portion 11; the rake head 2 includes a mating portion 22 detachably connected to the connecting portion 11, and an auxiliary disassembly and assembly portion 3 is provided on the rake head 2 so that the installation tool can drive the rake head 2 to approach or move away from the connecting portion 11 through the auxiliary disassembly and assembly portion 3. The staff can use an installation tool, such as a hammer, to strike the auxiliary disassembly and assembly portion 3. When the wear of the rake head 2 reaches the preset value and the rake head 2 needs to be removed from the rod body 1, the staff can first remove the locking member 6 connecting the connecting portion 11 and the mating portion 22, and then continuously strike the side of the auxiliary disassembly and assembly portion 3 close to the rod body 1, thereby applying a force to the rake head 2 to move away from the rod body 1, so that the mating portion 22 of the rake head 2 can gradually move away from the connecting portion 11 until the staff can easily remove the rake head 2 from the rod body 1. Similarly, when installing a new rake head 2 onto the rod body 1, the staff can continuously strike the side of the auxiliary disassembly and assembly portion 3 away from the rod body 1, thereby applying a force to the rake head 2 to move towards the rod body 1, so that the mating portion 22 of the rake head 2 can gradually approach the connecting portion 11. Until the mating portion 22 and the connecting portion 11 are correspondingly arranged, the staff can connect the connecting portion 11 and the mating portion 22 together through the locking member 6 to complete the installation operation of the rake head 2. By providing the auxiliary disassembly and assembly portion 3 on the rake head 2, the present disclosure enables the staff to use an installation tool to drive the rake head 2 to approach or move away from the connecting portion 11 on the rod body 1 through the auxiliary disassembly and assembly portion 3, thereby facilitating the disassembly and assembly of the rake head 2 and the rod body 1, reducing the time for replacing the rake head 2, and improving the maintenance efficiency of the coal screening machine.

[0030] It should be noted that, in order to ensure the service life of the rake head 2, the rake head 2 can be made of a cermet composite material.

[0031] In some embodiments of the present disclosure, as Figure 1 、 Figure 2 and Figure 5 shown, the auxiliary disassembly and assembly portion 3 includes a protrusion 31 provided on the outer peripheral side of the rake head 2. The protrusion 31 can facilitate the staff to use an installation tool to strike the auxiliary disassembly and assembly portion 3. Of course, in order to prevent the protrusion 31 from being damaged or deformed due to long-term striking, the protrusion 31 can have a certain thickness to form a convex block protruding from the outer peripheral side of the rake head 2. In addition, in order to facilitate the staff to observe the wear condition of the rake head 2, the auxiliary disassembly and assembly portion 3 can be provided near the extreme wear position of the rake head 2, so as to ensure that the staff can replace the rake head 2 in time and ensure the working efficiency of the coal screening machine.

[0032] In addition, as Figure 1 、 Figure 2 and Figure 5As shown, the protrusion 31 can be constructed as an annular protrusion arranged around the outer peripheral side of the material rake head 2. The annular protrusion can facilitate the staff to knock the auxiliary disassembly and assembly part 3 from various angles according to the disassembly and assembly environment and personal habits at the time, thereby improving the disassembly and assembly efficiency of the material rake head 2.

[0033] In some embodiments, Figure 1 and Figure 2 As shown, an arc structure 21 is formed at one end of the material rake head 2 away from the rod body 1, and the arc structure 21 is used to push the material to move away from the material rake head 2. That is, when the material rake head 2 rotates with the spoke 5, the material in the coal screening machine, that is, the coal, will move to the side of the screen drum 4 of the coal screening machine under the action of the arc structure, thereby facilitating the screening of the coal.

[0034] Specifically, Figure 1 and Figure 6 As shown, the arc structure 21 may include a right-angled surface 211 and an arc surface 212. The right-angled surface 211 is connected to the side of the auxiliary disassembly part 3 away from the rod body 1 and extends along the side away from the auxiliary disassembly part 3. The arc surface 212 is connected to both ends of the right-angled surface 211. The arc structure 21 is configured such that when the rod body 1 rotates with the material rake head 2, the arc surface 212 can contact the material. That is, the arc structure 21 is in the shape of a quarter sphere as a whole. In this way, the arc surface 212 of the arc structure 21 can first contact the coal during the rotation process. Under the action of the arc surface 212, the coal will move away from the rod body 1, so that the coal in the coal screening machine can quickly and fully contact the screen plate, thereby improving the coal screening efficiency of the coal screening machine.

[0035] Of course, in some embodiments not shown in the figure, the arc structure 21 can also be constructed as a hemispherical shape including a plane and a hemispherical surface. The hemispherical plane can be connected to the side of the auxiliary disassembly and assembly part 3 facing away from the rod body 1, and the hemispherical surface can contact the coal in the coal screening machine and make the coal approach the side of the screen plate. The hemispherical arc structure 21 can drive the coal to quickly and fully contact the screen plate when the arc structure 21 rotates forward or reverse, thereby increasing the applicable scenarios of the arc structure 21 while ensuring the coal screening efficiency of the coal screening machine.

[0036] In some embodiments of the present disclosure, Figure 4 and Figure 5As shown, one of the rod body 1 and the rake head 2 can be sleeved on the other, so that the connecting part 11 and the mating part 22 can be connected by the locking part 6. Connecting the two in a sleeved manner can ensure the stability of the connection between the rod body 1 and the rake head 2. In addition, such a connection can also play a certain positioning role. When using an installation tool to strike the auxiliary disassembly and assembly part 3, it can ensure that one of the rod body 1 and the rake head 2 can move along the extension direction of the other, so that the connecting part 11 and the mating part 22 can quickly and accurately approach or move away from each other, improving the disassembly and assembly efficiency.

[0037] Among them, as Figure 2 and Figure 3 shown, the connecting part 11 and the mating part 22 can be configured as through holes, which can simplify the manufacturing process of the rod body 1 and the rake head 2 while ensuring the connection stability of the rod body 1 and the rake head 2.

[0038] Specifically, as Figure 2 and Figure 3 shown, there are two connecting parts 11 and two mating parts 22. The two connecting parts 11 are arranged at intervals and can be arranged in one-to-one correspondence with the two mating parts 22 after one of the rod body 1 and the rake head 2 is sleeved on the other. The setting of two or more connecting parts 11 and mating parts 22 can further improve the connection stability of the rod body 1 and the rake head 2.

[0039] In addition, it should be noted that the locking part 6 of the present disclosure can be configured as a connecting pin. The connecting pin can include a pin head and a pin rod body. Among them, the pin head can be set as a hexagonal pin head, and an assembly groove for installing a snap ring can be provided on the pin rod body. For example, when the rake head 2 is sleeved outside the rod body 1, the pin head of the connecting pin can be embedded in the mating part 22, and then the snap ring is connected to the pin rod body of the connecting pin through the assembly groove to complete the positioning installation of the connecting pin. Of course, the mating part 22 can be configured as a hexagonal through hole adapted to the shape of the pin head to facilitate the positioning and limiting of the connecting pin.

[0040] In the second aspect of the present disclosure, as Figure 6 shown, a coal screening machine is provided, including a screening cylinder 4 having a cavity 41, a spoke 5 rotatably connected to the cavity 41, and the above-mentioned rake provided on the spoke 5. The coal in the coal screening machine accumulates in the cavity 41. The rotation of the spoke 5 in the cavity 41 can drive the rake to rotate with it, so that the rake can drive the coal in the cavity 41 to move toward the side of the screen plate on the screening cylinder 4, facilitating the coal screening operation of the coal screening machine.

[0041] Among them, the side of the rod body 1 of the rake close to the spoke 5 is thicker to ensure the stability of the connection between the rake and the spoke 5, while the side of the rake for connecting with the rake head 2 is thinner, which can facilitate its connection with the rake head 2.

[0042] In some embodiments of the present disclosure, the rotation direction of the spoke 5 is opposite to that of the screen cylinder 4. That is, the coal screening machine of the present disclosure is a double-rotating coal screening machine, which can improve the coal screening efficiency.

[0043] In summary, the present disclosure exemplarily shows the use process of the material rake.

[0044] The rod body 1 of the material rake can be connected to the spoke 5 inside the screen cylinder 4 through fasteners such as bolts or screws. During the rotation of the spoke 5, the arc surface 212 of the material rake head 2 will drive the coal in the cavity 41 to move towards the screen plate side of the screen cylinder 4, thus facilitating the coal screening machine to complete the coal screening operation. When the material rake head 2 is about to be worn to the limit position due to long-term use, the staff can first knock on the locking member 6 to make the locking member 6 move out of the connecting portion 11 and the mating portion 22, and then use the installation tool to knock on the side of the protrusion 31 close to the rod body 1, so as to apply a force to the material rake head 2 in the direction away from the rod body 1, so that the mating portion 22 on the material rake head 2 gradually moves away from the connecting portion 11 of the rod body 1 until the staff can easily remove the material rake head 2 from the rod body 1. Similarly, when installing a new material rake head 2 onto the rod body 1, the staff can first sleeved the material rake head 2 outside the rod body 1, and then use the installation tool to knock on the side of the protrusion 31 away from the rod body 1, so that the mating portion 22 on the material rake head 2 gradually moves towards the connecting portion 11 side until the mating portion 22 and the connecting portion 11 are correspondingly arranged, and then connect the two through the locking member 6, thereby completing the installation operation of the new material rake head 2. Based on this, the present disclosure provides a protrusion 31 on the material rake head 2, so that the staff can use the installation tool to drive the material rake head 2 to approach or away from the connecting portion 11 on the rod body 1 through the protrusion 31, thus facilitating the disassembly and assembly of the material rake head 2 and the rod body 1, reducing the time for replacing the material rake head 2, and improving the maintenance efficiency of the coal screening machine.

[0045] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0046] In addition, it should be noted that, in the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0047] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A material rake, characterized in that, include: A rod body, used to be connected to the spokes, including a connecting portion; and The material rake head comprises a matching part detachably connected to the connecting part, and an auxiliary disassembly part is arranged on the material rake head so that the installation tool can drive the material rake head to approach or move away from the connecting part through the auxiliary disassembly part.

2. The rake according to claim 1, characterized in that, The auxiliary disassembly and assembly portion includes a protrusion arranged on the outer peripheral side of the material drag head.

3. The material rake according to claim 2, characterized in that, The protrusion is constructed as an annular protrusion arranged around the outer peripheral side of the material drag head.

4. The rake according to claim 1, characterized in that An arc structure is formed at one end of the material rake head away from the rod body, and the arc structure is used to push the material to move in a direction away from the material rake head.

5. The rake according to claim 4, characterized in that, The arc structure includes a right-angled surface and an arc-shaped surface, the right-angled surface is connected to a side of the auxiliary disassembly portion away from the rod body and extends along the side away from the auxiliary disassembly portion, and the arc-shaped surface is connected to both ends of the right-angled surface; The arc structure is configured such that when the rod body rotates with the material rake head, the arc surface can abut against the material.

6. The rake according to any one of claims 1-5, characterized in that, One of the rod body and the material drag head can be sleeved on the other, so that the connecting portion and the matching portion can be connected through a locking member.

7. The rake according to claim 6, characterized in that, The connecting portion and the matching portion are configured as through holes.

8. The rake according to claim 7, characterized in that, The connecting parts and the matching parts are both configured with two, and the two connecting parts are arranged at intervals and can be arranged one-to-one with the two matching parts after one of the rod body and the material rake head is sleeved on the other.

9. A coal screening machine, characterized in that, include: A screen cylinder having a cavity; a spoke rotatably connected to the cavity; as well as The material rake according to any one of claims 1 to 8 is arranged on the spokes.

10. The coal sieve machine according to claim 9, wherein The rotation direction of the wheel spokes is opposite to the rotation direction of the screen drum.

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