A feeding mechanism of a coal mill

Abstract

The present invention provides a feeding mechanism of a coal mill, which relates to the technical field of coal mills and includes a coal mill main body, a buffer mechanism and a pretreatment mechanism. A feeding hopper is provided on the top of the coal mill main body, the connecting rod is fixedly connected to the top of the inner cavity of the coal mill main body, the movable frame is movably connected to the connecting rod, the spring is arranged between the movable frame and the side wall of the main body box, and is sleeved on the outer side of the connecting rod, the buffer table is fixedly connected to the end of the movable frame and is located directly below the feeding hopper. The present invention controls the amount of raw coal falling into the coal mill at one time through the buffer table, and controls the movable frame to descend through an electromagnet. The guide rod will also rotate with the cooperation of the gear and the tooth plate, that is, the two sides of the movable plate box move, and a certain amount of raw coal enters the coal mill main body for processing. The whole feeding process adds a step on the buffer table, reduces the adverse effects of direct feeding, protects the components of the inner cavity of the coal mill, and makes the production effect of the coal mill better.

Description

Technical Field

[0001] The invention relates to the technical field of coal mills, in particular to a feeding mechanism of a coal mill. Background Art

[0002] Coal mill is a machine that breaks coal into powder and grinds it into coal powder. It is an important auxiliary equipment for pulverized coal furnace. There are various types of coal mills, such as vertical mill, high-pressure roller mill, medium-speed micro-powder mill, super-pressure trapezoidal mill, Raymond mill, etc. There are many types of coal mills. According to the speed of the coal mill working parts, they can be divided into three types, namely low-speed coal mill, medium-speed coal mill and high-speed coal mill.

[0003] When the coal mill is processing, it is difficult to feed the raw coal. In addition, the existing feeding mechanism lacks a buffering effect when loading coal, resulting in a large impact on the coal mill, which has an adverse effect. The raw coal also lacks good pretreatment, is not uniform, and is prone to blockage. Based on this, the present invention designs a feeding mechanism for a coal mill to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a feeding mechanism for a coal mill to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a feeding mechanism of a coal mill, comprising a coal mill body, a buffer mechanism and a pretreatment mechanism, the buffer mechanism comprising a connecting rod, a spring, a movable frame, a buffer table, a guide rod, a movable plate, a gear and a toothed plate, a feeding hopper is provided on the top of the coal mill body, two connecting rods are provided and are symmetrically arranged on both sides below the feeding hopper, the connecting rod is fixed to the top of the inner cavity of the coal mill body, the movable frame is movably connected to the connecting rod, and the movable frame is L-shaped, the spring is provided between the movable frame and the side wall of the main body box, and is sleeved on the outside of the connecting rod, the buffer table is fixed to the end of the movable frame and is located directly below the feeding hopper, the guide rod is rotatably connected to one end of the movable frame away from the buffer table, and the guide rod is provided with a thread, the movable plate is threadedly connected to the guide rod, and the movable plate slides along the bottom surface of the buffer table, the gear is installed at the end of the guide rod, the toothed plate is provided with two groups, and are respectively fixed at positions close to the connecting rod, and the gear and the toothed plate are meshed.

[0006] Preferably, a buffer groove is provided on the top of the buffer table, and the side wall of the buffer groove is inclined, and a discharge port is provided on the bottom of the buffer table, and the size of the movable plate matches the size of the discharge port.

[0007] Preferably, the pretreatment mechanism includes a screen, a motor, a connecting shaft, a stirring rod, a transmission rod, a cam and a transmission member, the screen is fixedly connected to the bottom of the inner cavity of the feed hopper, a mounting plate is provided on the side wall of the feed hopper, the motor is arranged on the mounting plate, the connecting shaft is connected to the output end of the motor and extends to the inner cavity of the feed hopper, the stirring rod is evenly distributed on the connecting shaft, the transmission rod is rotatably connected to the side wall of the feed hopper, the cam is fixedly connected to the left end of the transmission rod and is located above the screen, and the transmission member is arranged between the transmission rod and the connecting shaft.

[0008] Preferably, a cover is hinged on the top of the feed hopper.

[0009] Preferably, a telescopic rod is inserted into the rear side wall of the coal mill body, and an output end of the telescopic rod is fixedly connected to a baffle via a support rod, and the baffle is located below the screen.

[0010] Preferably, an electromagnet is provided at the bottom of the connecting rod, and the movable frame is made of iron material.

[0011] Preferably, a fan is also provided on the side wall of the inner cavity of the coal mill body close to the buffer mechanism.

[0012] Preferably, a laser indicator light is also provided on the side wall of the movable frame on the right side, and an observation window is provided on the right side of the coal mill body, and scale lines are provided on the observation window.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The present invention uses a designed buffer mechanism to control the amount of raw coal that falls into the coal mill at one time through a buffer table, and controls the movable frame to descend through an electromagnet. The guide rod will also rotate with the cooperation of the gear and the tooth plate, that is, the two sides of the movable plate box move, and a certain amount of raw coal enters the coal mill body for processing. The whole feeding process adds a step on the buffer table, which reduces the adverse effects of direct feeding, protects the components in the inner cavity of the coal mill, and makes the production effect of the coal mill better.

[0015] (2) The present invention designs a pre-treatment mechanism, which can process the raw coal through a stirring rod. At the same time, the function of the motor in the same group is utilized to rotate the cam through transmission, thereby intermittently hitting the screen, screening out a sufficient amount of coal, and dropping it into the buffer table, thereby improving the feeding effect and efficiency.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the buffer mechanism of the present invention;

[0020] Figure 3 It is a partial side view schematic diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1- coal mill body, 2- buffer mechanism, 201- connecting rod, 202- spring, 203- movable frame, 204- buffer table, 205- guide rod, 206- movable plate, 207- gear, 208- tooth plate, 3- pretreatment mechanism, 301- screen, 302- motor, 303- connecting shaft, 304- stirring rod, 305- transmission rod, 306- cam, 307- transmission part, 4- feed hopper, 5- buffer trough, 6- discharge port, 7- mounting plate, 8- cover, 9- telescopic rod, 10- baffle, 11- electromagnet, 12- fan, 13- laser indicator light, 14- observation window, 15- scale line. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figure 1-5The present invention provides a technical solution: a feeding mechanism of a coal mill, comprising a coal mill body 1, a buffer mechanism 2 and a pretreatment mechanism 3, the buffer mechanism 2 comprising a connecting rod 201, a spring 202, a movable frame 203, a buffer table 204, a guide rod 205, a movable plate 206, a gear 207 and a tooth plate 208, a feeding hopper 4 is arranged on the top of the coal mill body 1, two connecting rods 201 are arranged, and are symmetrically arranged on both sides below the feeding hopper 4, the connecting rod 201 is fixedly connected to the top of the inner cavity of the coal mill body 1, the movable frame 203 is movably connected to the connecting rod 201, and the movable frame 203 is L-shaped, the spring 202 is It is placed between the movable frame 203 and the side wall of the main box 1, and is sleeved on the outside of the connecting rod 201. The buffer table 204 is fixedly connected to the end of the movable frame 203 and is located directly below the feed hopper 4. The guide rod 205 is rotatably connected to the end of the movable frame 203 away from the buffer table 204, and the guide rod 205 is provided with a thread. The movable plate 206 is threadedly connected to the guide rod 205, and the movable plate 206 slides along the bottom surface of the buffer table 204. The gear 207 is installed at the end of the guide rod 205. The tooth plate 208 is provided with two groups, and they are respectively fixed at positions close to the connecting rod 201, and the gear 207 and the tooth plate 208 are meshed.

[0028] A buffer groove 5 is provided on the top of the buffer platform 204 , and the side wall of the buffer groove 5 is inclined. A discharge port 6 is provided on the bottom of the buffer platform 204 , and the size of the movable plate 206 matches the size of the discharge port 6 .

[0029] Among them, the pretreatment mechanism 3 includes a screen 301, a motor 302, a connecting shaft 303, a stirring rod 304, a transmission rod 305, a cam 306 and a transmission member 307. The screen 301 is fixedly connected to the bottom of the inner cavity of the feed hopper 4, and a mounting plate 7 is provided on the side wall of the feed hopper 4. The motor 302 is arranged on the mounting plate 7. The connecting shaft 303 is connected to the output end of the motor 302 and extends to the inner cavity of the feed hopper 4. The stirring rod 304 is evenly distributed on the connecting shaft 303. The transmission rod 305 is rotatably connected to the side wall of the feed hopper 4. The cam 306 is fixedly connected to the left end of the transmission rod 305 and is located above the screen 301. The transmission member 307 is arranged between the transmission rod 305 and the connecting shaft 303.

[0030] A cover 8 is hinged on the top of the feed hopper 4 .

[0031] A telescopic rod 9 is inserted into the rear side wall of the coal mill body 1 , and a baffle 10 is fixedly connected to the output end of the telescopic rod 9 via a supporting rod, and the baffle 10 is located below the screen 301 .

[0032] The bottom of the connecting rod 201 is provided with an electromagnet 11, and the movable frame 203 is made of iron material.

[0033] Example 2

[0034] Compared with Example 1, the difference is:

[0035] A fan 12 is also provided on the side wall of the inner cavity of the coal mill body 1 close to the buffer mechanism 2. The provided fan can make the coal materials falling from the buffer platform more dispersed, further improving the feeding effect.

[0036] Example 3

[0037] Compared with Example 1, the difference is:

[0038] Among them, a laser indicator light 13 is also provided on the side wall of the right movable frame 203, and an observation window 14 is provided on the right side of the coal mill body 1. A scale line 15 is provided on the observation window 14. The laser indicator light 13 can enable the operator to clearly know the height to which the buffer table is lowered, which is not only conducive to controlling the coal material fed in a single time, but also can control the feeding process, making the entire device more practical.

[0039] A specific application of this embodiment is: the device provides electrical energy to the electrical components in the device through an external power supply, and controls their opening and closing through a control switch;

[0040] When in use, first inject the raw coal into the feed hopper 4, close the cover 8, and then turn on the motor 302. The motor 302 drives the stirring rod 304 to break the raw coal. At the same time, when the connecting shaft 303 rotates, under the action of the transmission member 307 (the transmission member includes two sets of connecting wheels and a transmission belt), the transmission rod 307 also rotates, that is, the cam 306 hits the screen, and the broken coal falls into the buffer table 204 through the screen 301. After the buffer table 204 drops to a set height (the falling height can be obtained by observing the laser indicator light 13, and the amount of coal falling into the buffer table 204 can be controlled), the telescopic rod 9 is controlled to extend, and the baffle 10 blocks it below the screen 301, and then the electromagnet 11 is turned on to energize. The electromagnet 11 again attracts the movable frame 203 to descend, and the gear 207 moves along the tooth plate 208, that is, the guide rod 205 rotates, and the movable plate 206 moves to both ends. At this time, the coal in the buffer table 204 can fall into the coal mill body 1 from the discharge port 6, completing the entire feeding process.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A feeding mechanism for a coal mill, characterized in that: The invention comprises a coal mill body (1), a buffer mechanism (2) and a pretreatment mechanism (3); the buffer mechanism (2) comprises a connecting rod (201), a spring (202), a movable frame (203), a buffer platform (204), a guide rod (205), a movable plate (206), a gear (207) and a tooth plate (208); a feed hopper (4) is provided on the top of the coal mill body (1); two connecting rods (201) are provided and are symmetrically arranged on both sides below the feed hopper (4); the connecting rod (201) is fixedly connected to the top of the inner cavity of the coal mill body (1); the movable frame (203) is movably connected to the connecting rod (201), and the movable frame (203) is L-shaped; the spring (202) is arranged between the movable frame (203) and the coal mill body (1); The movable plate (206) is threadedly connected to the guide rod (205), and the movable plate (206) slides along the bottom surface of the buffer platform (204). The gear (207) is mounted on the end of the guide rod (205). Two groups of tooth plates (208) are provided, and are respectively fixed to positions close to the connecting rod (201). The gear (207) and the tooth plates (208) are meshed with each other. A buffer groove (5) is provided on the top of the buffer platform (204), and the side wall of the buffer groove (5) is arranged inclined; a discharge port (6) is provided on the bottom of the buffer platform (204), and the size of the movable plate (206) matches the size of the discharge port (6); An electromagnet (11) is provided at the bottom of the connecting rod (201), and the movable frame (203) is made of an iron material; The pretreatment mechanism (3) comprises a screen (301), a motor (302), a connecting shaft (303), a stirring rod (304), a transmission rod (305), a cam (306) and a transmission member (307); the screen (301) is fixedly connected to the bottom of the inner cavity of the feed hopper (4); a mounting plate (7) is provided on the side wall of the feed hopper (4); the motor (302) is arranged on the mounting plate (7); the connecting shaft (303) is connected to the output end of the motor (302) and extends to the inner cavity of the feed hopper (4); the stirring rod (304) is evenly distributed on the connecting shaft (303); the transmission rod (305) is rotatably connected to the side wall of the feed hopper (4); the cam (306) is fixedly connected to the left end of the transmission rod (305) and is located above the screen (301); and the transmission member (307) is arranged between the transmission rod (305) and the connecting shaft (303); The top of the feed hopper (4) is hinged with a cover (8); A telescopic rod (9) is inserted into the rear side wall of the coal mill body (1), and a baffle (10) is fixedly connected to the output end of the telescopic rod (9) via a support rod, and the baffle (10) is located below the screen (301).

2. A feeding mechanism for a coal mill according to claim 1, characterized in that: A fan (12) is also provided on a side wall of the inner cavity of the coal mill body (1) close to the buffer mechanism (2).

3. A feeding mechanism for a coal mill according to claim 1, characterized in that: A laser indicator light (13) is also provided on the side wall of the movable frame (203) on the right side, and an observation window (14) is provided on the right side of the coal mill body (1), and a scale line (15) is provided on the observation window (14).

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