Improved device for buffering a roller

Abstract

The application discloses an improved device of a buffer roller, which comprises an improved unit, a buffer roller assembly connected with the coal falling pipe assembly, and two groups of driven fan assemblies respectively in contact with both sides of the buffer roller assembly and connected with the coal falling pipe assembly; a fixed unit, which comprises a bearing bottom plate arranged on one side of the improved unit, two groups of movable containing grooves symmetrically arranged on both sides of the bearing bottom plate, two groups of clamping springs symmetrically arranged in the movable containing grooves, an L-shaped positioning plate connected with the clamping springs and inserted with the movable containing grooves, a rubber top rod arranged on one side of the L-shaped positioning plate, and two groups of abutting plates symmetrically arranged on the top of the bearing bottom plate. The application has the beneficial effects of prolonging the service life of the buffer roller, preventing blockage, and allowing the coal blocks not meeting the standards to be stored for air selection and crushing.

Description

Technical Field

[0001] This invention relates to the field of coal transportation technology, and in particular to an improved device for a buffer roller. Background Technology

[0002] Buffer rollers are commonly used in long, straight coal chutes to reduce the impact of coal chunks on the next-stage conveyor belt caused by gravity through their rotation. Existing buffer roller designs use a motor to drive a coupling, which in turn drives the buffer roller to rotate at a fixed speed. The problem is that irregularly sized coal chunks can cause peak impact forces, forcibly accelerating the buffer roller's rotation and frequently resulting in motor overload (thermocouple protection). In practical applications, when transporting coal types with large chunks, one or two buffer roller motors are disconnected to allow free rotation, converting gravitational potential energy into mechanical energy. However, this improvement method is resource-intensive and difficult to install and maintain. Therefore, an improved buffer roller device is needed to protect the next-stage conveyor belt. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the problems existing in the above or prior art, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide an improved device for a buffer drum, which can increase the service life of the buffer drum and prevent clogging, and can retain and crush non-standard coal blocks through air separation.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an improved device for a buffer roller, comprising an improved unit, including a coal chute assembly, a buffer roller assembly connected to the coal chute assembly, and two sets of driven fan assemblies respectively contacting both sides of the buffer roller assembly and connected to the coal chute assembly. A fixing unit includes a bearing base plate disposed on one side of the improved unit, two sets of movable grooves symmetrically disposed on both sides of the bearing base plate, two sets of clamping springs symmetrically disposed within the movable grooves, an L-shaped positioning plate connected to the clamping springs and inserted into the movable grooves, and a rubber top rod disposed on one side of the L-shaped positioning plate.

[0007] As a preferred embodiment of the improved device for the buffer roller of the present invention, the coal drop pipe assembly includes a straight pipe, a flow guide installation pipe connected to one side of the straight pipe, position measuring ports and shock-absorbing springs symmetrically arranged on both sides of the flow guide installation pipe, and a screen plate arranged at the bottom of the flow guide installation pipe.

[0008] As a preferred embodiment of the improved device for the buffer roller of the present invention, the buffer roller assembly includes a rotating shaft extending from the position measuring port at both ends, two sets of connecting seats movably connected to both ends of the rotating shaft, a three-way plate connected to the connecting seats, a discharge crushing plate connected to the bottom of the three-way plate, a buffer fan blade group partially disposed in the guide installation pipe and disposed on one side in the straight pipe, and a round-headed lever disposed at one end of the rotating shaft.

[0009] As a preferred embodiment of the improved device for the buffer roller of the present invention, the driven fan assembly includes a wind box, a push rod that is always in contact with the round-headed lever and is inserted into the wind box, a piston plate connected to the push rod and disposed in the wind box, a return spring disposed on one side of the wind box and connected to the push rod, a side chamber disposed in the wind box, an upper air outlet and a lower air outlet disposed on the outer side wall of the side chamber, two sets of inner one-way valves for air inlet disposed on both sides of the wind box, and two sets of outer one-way valves for air outlet disposed on the inner side wall of the side chamber.

[0010] As a preferred embodiment of the improved device for the buffer roller of the present invention, the screen plate is provided with multiple sets of screen openings for screening coal mixtures that meet the combustion standards to the conveyor belt below; the discharge crushing plate is provided with multiple sets of discharge openings with a diameter much larger than the diameter of the screen openings, and the connection of each set of discharge openings is a solid plate. The solid plate is used to crush the coal blocks remaining on the bottom screen plate when the coal blocks are irregular in size and the impact force reaches a peak.

[0011] In a preferred embodiment of the improved device for the buffer roller of the present invention, the return spring always maintains the tendency to restore the push rod to its original state, but due to the weight of the buffer roller assembly, it cannot move the round-head lever, thus keeping the push rod in constant contact with the round-head lever.

[0012] As a preferred embodiment of the improved device for the buffer roller of the present invention, the air outlet of the upper air outlet is located at the buffer roller assembly; the air outlet of the lower air outlet is located between the screen plate and the discharge crushing plate.

[0013] As a preferred embodiment of the improved device for the buffer roller of the present invention, the guide pipe is used to install the buffer roller assembly and make part of the buffer fan blade group make eccentric contact with the material dropping direction of the straight pipe.

[0014] As a preferred embodiment of the improved device for the buffer roller of the present invention, the two sets of one-way valves on the inner side of the air inlet are opened to the inside when the air inlet is open, and kept closed when the air outlet is open.

[0015] As a preferred embodiment of the improved device for the buffer roller of the present invention, the two sets of one-way valves on the outer side of the air outlet are closed at the air inlet and kept open at the air outlet.

[0016] The beneficial effects of this invention are as follows: By setting a movable measuring port and a shock-absorbing spring, this invention allows the buffer roller assembly to have a certain displacement to achieve a better shock absorption effect and improve service life; by disassembling and reassembling the original motor and improving the buffer roller, the mechanical energy of the coal block impacting the buffer roller when falling is converted into wind energy to perform air separation screening and air cleaning of coal blocks that are still not up to standard size after being crushed by the crusher, preventing the buffer roller from clogging. Furthermore, the vibration of the buffer roller enhances the screening and anti-clogging effects. Moreover, the buffer roller assembly performs secondary crushing on the coal blocks remaining on the screen plate when the impact force reaches a peak due to the irregular size of the coal blocks. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0018] Figure 1 This is a schematic diagram illustrating the application scenario of the improved unit of the improved device for the buffer roller.

[0019] Figure 2 A schematic diagram of the overall structure of the fixing unit of the improved device for the buffer roller.

[0020] Figure 3 This is a schematic diagram of the overall structure of the improved unit of the improved device for the buffer roller.

[0021] Figure 4 Another perspective schematic diagram of the overall structure of the improved unit of the improved device for the buffer roller.

[0022] Figure 5 This is a schematic diagram of the internal structure of the improved unit of the improved device for the buffer roller.

[0023] Figure 6 A schematic diagram of the driven fan assembly of the improved device for the buffer roller.

[0024] Figure 7 A schematic diagram of the internal structure of the driven fan assembly of the improved device for the buffer roller.

[0025] Figure 8 A schematic diagram of the one-way valve structure on the inner side of the air inlet of the improved device for the buffer roller. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1

[0030] Reference Figures 1-8 This is the first embodiment of the present invention. This embodiment provides an improved device for a buffer drum, which can improve the service life of the buffer drum and prevent clogging, and can retain and crush non-standard coal blocks by air separation.

[0031] Specifically, the improved unit 100 includes a coal chute assembly 101, a buffer roller assembly 102 connected to the coal chute assembly 101, and two sets of driven fan assemblies 103 that are respectively in contact with both sides of the buffer roller assembly 102 and connected to the coal chute assembly 101.

[0032] The fixing unit 200 includes a supporting base plate 201 disposed on one side of the improved unit 100, two sets of movable receiving grooves 202 symmetrically disposed on both sides of the supporting base plate 201, two sets of clamping springs 203 symmetrically disposed within the movable receiving grooves 202, an L-shaped positioning plate 204 connected to the clamping springs 203 and inserted into the movable receiving grooves 202, a rubber top rod 205 disposed on one side of the L-shaped positioning plate 204, and two sets of abutment plates 206 symmetrically disposed on the top of the supporting base plate 201. By pulling the L-shaped positioning plate 204 to gradually disengage from the movable receiving grooves 202, the installation requirements of driven fan assemblies 103 of different sizes can be met. Under the action of the clamping springs 203, the driven fan assembly 103 can be fixed against the abutment plates 206 by the rubber top rod 205.

[0033] Furthermore, the coal chute assembly 101 includes a straight pipe 101a, a flow guide installation pipe 101b connected to one side of the straight pipe 101a, position measuring ports 101c and shock-absorbing spring components 101d symmetrically arranged on both sides of the flow guide installation pipe 101b, and a screen plate 101e disposed at the bottom of the flow guide installation pipe 101b.

[0034] Furthermore, the buffer roller assembly 102 includes a rotating shaft 102a extending from the position measuring port 101c at both ends, two sets of connecting seats 102b movably connected to both ends of the rotating shaft, a three-way plate 102c connected to the connecting seats 102b, a discharge crushing plate 102d connected to the bottom of the three-way plate 102c, a buffer fan blade assembly 102e partially disposed in the flow guide installation pipe 101b and disposed on one side in the straight pipe 101a, and a round-headed lever 102f disposed at one end of the rotating shaft 102a.

[0035] Furthermore, the driven fan assembly 103 includes a wind box 103a, a push rod 103b that is always in contact with the round-headed lever 102f and is inserted into the wind box 103a, a piston plate 103c that is connected to the push rod 103b and disposed in the wind box 103a, a return spring 103d disposed on one side of the wind box 103a and connected to the push rod 103b, a side chamber 103e disposed in the wind box 103a, an upper air outlet 103f and a lower air outlet 103g disposed on the outer wall of the side chamber 103e, two sets of inner inlet one-way valves 103h disposed on both sides of the wind box 103a, and two sets of outer outlet one-way valves 103i disposed on the inner wall of the side chamber 103e.

[0036] It should be noted that the size and shape of the coal chute assembly 101, the buffer roller assembly 102, and the driven fan assembly 103 can be adapted to the usage requirements. The illustrations are for illustrative purposes only and can be modified accordingly, but they are still within the scope of this invention.

[0037] Preferably, the screening plate 101e is provided with multiple sets of screening openings for screening coal mixtures that meet combustion standards to the conveyor belt below; the discharge crushing plate 102d is provided with multiple sets of discharge openings with a diameter much larger than the diameter of the screening openings, and the connection of each set of discharge openings is a solid plate. The solid plate is used to crush the coal blocks remaining on the bottom screening plate 101e when the coal blocks are irregular in size and the impact force reaches a peak.

[0038] Furthermore, the return spring 103d always tends to restore the push rod 103b to its original state, but due to the weight of the buffer roller assembly 102, it cannot move the round-head lever 102f, thus keeping the push rod 103b in constant contact with the round-head lever 102f.

[0039] Preferably, the upper air outlet 103f is oriented towards the buffer roller assembly 102; the lower air outlet 103g is oriented between the screen plate 101e and the discharge crushing plate 102d. The guide pipe 101b is used to install the buffer roller assembly 102 and to make part of the buffer fan blade group 102e eccentrically contact the material discharge direction of the straight pipe 101a. The two sets of inner inlet one-way valves 103h are open inward at the air inlet end and remain closed at the air outlet end. The two sets of outer outlet one-way valves 103i are closed at the air inlet end and remain open at the air outlet end.

[0040] It should be noted that the two sets of inner inlet check valves 103h and the two sets of outer outlet check valves 103i have similar structures, such as... Figure 7 As shown, a valve face hinged to the inner wall of the air box, with a size larger than the air outlet, enables one-way opening. A round-headed lever 102f is fixedly connected to a rotating shaft 102a, which in turn is fixedly connected to a buffer fan blade assembly 102e. Therefore, when coal impacts the buffer fan blade assembly 102e, the round-headed lever 102f will rotate with the rotating shaft 102a. The three-way plate 102c connects to the discharge crushing plate 102d and closes the movable measuring port 101c, preventing coal dust leakage during the up-and-down vibration of the buffer drum assembly 102. Furthermore, the two sets of three-way plates 102c, in contact with the inner wall of the coal drop pipe assembly 101, limit the buffer drum assembly 102 to prevent lateral displacement, ensuring stability during operation.

[0041] In operation, the upper-level coal conveyor belt feeds the coal mixture from a height into the straight pipe 101a, where it falls. The coal mixture first impacts the eccentric position of the buffer fan blade assembly 102e, causing the buffer fan blade assembly 102e to drive the rotating shaft 102a, which in turn rotates the round-headed lever 102f, converting gravitational potential energy into mechanical energy. After being impacted, the buffer roller assembly 102 vibrates up and down in the in-position moving port 101c, and the vibration is damped by the shock-absorbing spring 101d.

[0042] After the coal mixture falls onto the buffer fan blade assembly 102e, it continues to fall through the discharge crushing plate 102d and onto the screen plate 101e after the buffer fan blade assembly 102e rotates. The coal powder and standard coal blocks that have eliminated gravitational potential energy will pass through the screen plate 101e into the next-stage coal conveyor belt, while a small portion of larger coal blocks will accumulate on the screen plate 101e.

[0043] When the round-head lever 102f rotates, it will move the two sets of push rods 103b on both sides, so that the two sets of push rods 103b control the displacement of the piston plate 103c respectively, and make the two sets of driven fan assemblies 103 work.

[0044] The working process of one set of driven fan components 103 is as follows: When the round-head lever 102f rotates and the two sets of push rods 103b reach their maximum displacement, when the push rod 103b pushes the piston plate 103c to move, the inner one-way valve 103h at the push rod 103b opens to draw in air under the action of air pressure, and the outer one-way valve 103i at the push rod 103b closes; the inner one-way valve 103h at the other location closes, and the outer one-way valve 103i at the other location opens and sprays air through the upper air outlet 103f and the lower air outlet 103g into the coal chute assembly 101.

[0045] As the round-head lever 102f continues to rotate and the return spring 103d acts, the two sets of push rods 103b return from their maximum displacement to their original positions as shown in the diagram. At this point, the inner one-way valve 103h at the push rod 103b closes, while the outer one-way valve 103i at the push rod 103b opens and ejects airflow through the upper outlet 103f and lower outlet 103g into the coal chute assembly 101. Meanwhile, the inner one-way valve 103h at the other location opens to allow air inflow, and the outer one-way valve 103i at the other location closes to prevent the intake of coal dust. The driven fan assembly 103 ensures continuous airflow impact during the rotation of the round-head lever 102f, converting mechanical energy into wind energy.

[0046] As the coal mixture impacts the buffer fan blade assembly 102e, some coal accumulates inside, causing blockage. Two sets of driven fan assemblies 103, positioned on either side of the buffer drum assembly 102, blow air onto both sides of the buffer fan blade assembly 102e. Combined with the vibration of the buffer fan blade assembly 102e itself, this effectively alleviates the coal dust blockage.

[0047] Since the two sets of lower air outlets 103g are positioned between the screen plate 101e and the discharge crushing plate 102d, the coal mixture accumulated on the screen plate 101e can be air-separated, allowing coal powder and small coal lumps to fall quickly through the screen plate 101e and avoid excessive accumulation. When the irregular size of the coal lumps causes the impact force to peak, forcibly driving the buffer drum to rotate and causing the buffer drum assembly 102 to move down to the bottom of the position measuring port 101c, the discharge crushing plate 102d at the bottom of the buffer drum assembly 102 will crush the coal lumps accumulated on the screen plate 101e through the solid plate, and through air separation and vibration of the coal drop pipe assembly 101, the crushed coal mixture will be quickly discharged to the next-stage coal conveyor belt.

[0048] In summary, by setting the position measuring port and shock-absorbing spring components, the buffer roller assembly is allowed a certain amount of displacement to achieve a better shock absorption effect and improve service life. By disassembling and reassembling the original motor and improving the buffer roller, the mechanical energy of the coal block impacting the buffer roller when falling is converted into wind energy to perform air separation screening and air cleaning of coal blocks that are still not up to standard size after being crushed by the crusher, preventing the buffer roller from clogging. Furthermore, the vibration of the buffer roller enhances the screening and anti-clogging effects. In addition, the buffer roller assembly performs secondary crushing on the coal blocks remaining on the screen plate when the impact force reaches a peak due to the irregular size of the coal blocks.

[0049] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0050] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0051] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An improved device for cushioning a drum, characterized by: The utility model relates to a coal drop pipe assembly (101), a buffer roller assembly (102) connected with the coal drop pipe assembly (101), and two groups of driven fan assemblies (103) respectively in contact with both sides of the buffer roller assembly (102) and connected with the coal drop pipe assembly (101); The utility model relates to a fixed unit (200) including a bearing bottom plate (201) arranged on one side of the improved unit (100), two groups of mobile containing grooves (202) symmetrically arranged on both sides of the bearing bottom plate (201), two groups of clamping springs (203) symmetrically arranged in the mobile containing grooves (202), an L-shaped positioning plate (204) connected with the clamping springs (203) and inserted with the mobile containing grooves (202), a rubber top rod (205) arranged on one side of the L-shaped positioning plate (204), and two groups of abutting plates (206) symmetrically arranged on the top of the bearing bottom plate (201); The coal drop pipe assembly (101) includes a straight pipe (101a), a flow guide mounting pipe (101b) connected with one side of the straight pipe (101a), a moving amount port (101c) and a damping spring piece (101d) symmetrically arranged on both sides of the flow guide mounting pipe (101b), and a screening plate (101e) arranged at the bottom of the flow guide mounting pipe (101b); The buffer roller assembly (102) includes a rotating shaft (102a) with two ends respectively extending out of the moving amount port (101c), two groups of connecting seats (102b) respectively movably connected with both ends of the rotating shaft, a three-purpose plate (102c) connected with the connecting seats (102b), a discharging crushing plate (102d) connected with the bottom of the three-purpose plate (102c), a buffer fan blade group (102e) partially arranged in the flow guide mounting pipe (101b) and arranged on one side in the straight pipe (101a), and a round head lever (102f) arranged at one end of the rotating shaft (102a); The driven fan assembly (103) includes a bellows (103a), a push rod (103b) always in contact with the round head lever (102f) and inserted with the bellows (103a), a piston plate (103c) connected with the push rod (103b) and arranged in the bellows (103a), a return spring (103d) arranged on one side of the bellows (103a) and connected with the push rod (103b), a side chamber (103e) arranged in the bellows (103a), an upper air outlet (103f) and a lower air outlet (103g) arranged on the outer side wall of the side chamber (103e), two groups of air inlet inner check valves (103h) arranged on both sides of the bellows (103a), and two groups of air outlet outer check valves (103i) arranged on the inner wall of the side chamber (103e). ​ When the round head lever (102f) rotates, the round head lever (102f) will push two groups of push rods (103b) on both sides, so that two groups of push rods (103b) control the displacement of the piston plate (103c) respectively, and two groups of driven fan assemblies (103) work; The air outlet direction of the upper air outlet (103f) is arranged at the buffer roller assembly (102), and the air outlet direction of the lower air outlet (103g) is arranged between the screening plate (101e) and the discharge crushing plate (102d).

2. The improvement of a cushioning drum as defined in claim 1 wherein: The screening plate (101e) is provided with a plurality of screening openings for screening the coal mixture meeting the combustion standard to the conveying belt below; the discharge crushing plate (102d) is provided with a plurality of discharge openings with diameters much larger than those of the screening openings, and the connecting portions of each group of discharge openings are all solid plates, which are used to crush the remaining coal blocks on the bottom screening plate (101e) when the impact force appears peak value due to irregular size of the coal blocks.

3. The improvement of a cushioning drum as defined in claim 2 wherein: The reset spring (103d) always maintains the tendency of restoring the push rod (103b) to the original state, but cannot push the round head lever (102f) due to the self-weight of the buffer roller assembly (102), so that the push rod (103b) always contacts with the round head lever (102f).

4. The improvement of a cushioning drum as defined in claim 3 wherein: The flow guide mounting pipe (101b) is used to mount the buffer roller assembly (102) and make part of the buffer vane group (102e) contact with the falling direction of the straight pipe (101a) eccentrically.

5. The improvement of a cushioning drum as defined in claim 4 wherein: Two groups of air inlet inner one-way valves (103h) are opened inwardly at the air inlet end and kept closed at the air outlet end.

6. The improved device for buffering a drum as claimed in claim 5, wherein: Two groups of air outlet outer one-way valves (103i) are closed at the air inlet end and kept opened at the air outlet end.

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