Coal sample blanking device and weighing equipment

Abstract

The invention relates to the technical field of coal sample weighing, and discloses a coal sample blanking device and weighing equipment. The coal sample blanking device comprises a material storage box, a vibration assembly and a material blocking assembly, the top of the bottom wall of the material storage box is provided with an arc-shaped flow guide face extending in an inclined mode, the arc-shaped flow guide face is in a necking shape in the inclined downward direction, and the bottom wall of the material storage box is provided with a discharging port; the vibration assembly is arranged on the storage box and used for driving the storage box to vibrate. The material blocking assembly is used for blocking the discharging opening or enabling the discharging opening to be opened. The weighing equipment comprises the coal sample blanking device and a weighing device. According to the coal sample blanking device to be protected, under the action of the vibration assembly, the storage box can vibrate at a fixed frequency, so that a coal sample is stably fed to the discharge port on the arc-shaped flow guide surface, the coal sample blockage problem is avoided, the rhythm interruption phenomenon is not likely to occur, it is ensured that the coal sample can stably fall on the weighing device, and the coal sample blanking efficiency is improved. And the accuracy of the measurement result of the weighing device is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of coal sample weighing, and in particular to a coal sample dropping device and weighing equipment. Background Art

[0002] Thermal power plants rely on coal combustion to obtain energy, and the fuel required by thermal power plants is in large quantities, so it is a very important task to detect the quality of coal entering the plant and the furnace. Faced with large quantities of coal, thermal power plants will randomly extract a small amount of coal through sampling agencies to make samples, and analyze their components to determine the quality of the coal. The measurement of sample weight is an important parameter for judging the quality of the sample, so the measurement accuracy of the sample weight is very important.

[0003] At present, coal samples are weighed vertically. Specifically, a storage hopper is set above the weighing device, a discharge port is set at the bottom of the storage hopper, and a control valve for opening or closing the discharge port is installed at the discharge port. The coal sample is delivered or cut off by opening or closing the control valve. However, when the vertical weighing method is used, the storage hopper is prone to blockage when conveying coal samples, or the coal flow is increased due to wear of the structural parts in the storage hopper, resulting in inconsistency in the unit feed amount and feed speed of the coal flow, and unstable coal falling, which leads to deviation in the weighing result and affects the accuracy of the measurement. Summary of the invention

[0004] In order to solve the above technical problem or at least partially solve the above technical problem, the present invention provides a coal sample dropping device and a weighing device.

[0005] The present invention provides a coal sample dropping device, comprising a storage box, a vibration assembly and a blocking assembly, wherein an inclined arc-shaped guide surface is formed on the top of the bottom wall of the storage box, and the arc-shaped guide surface is tapered along the inclined downward direction, and the bottom wall of the storage box is provided with a discharge port connected to the tapered end of the arc-shaped guide surface; the vibration assembly is arranged on the storage box to drive the storage box to vibrate; the blocking assembly is used to block the discharge port or leave the discharge port open.

[0006] Optionally, the bottom wall of the material storage box is formed by bending both side edges of the fan-shaped plate upward in an arc shape, so that the top of the material storage box is open.

[0007] Optionally, a sealing plate is provided at the flared end of the sector plate, and at least part of the blocking assembly is arranged on the sealing plate.

[0008] Optionally, the blocking assembly includes a telescopic part arranged on the sealing plate, a blocking rod is provided at the output end of the telescopic part, and a plug is provided at the end of the blocking rod away from the telescopic part. The telescopic part can drive the plug to move in a direction close to or away from the discharge port through the blocking rod.

[0009] Optionally, the discharge port is in a truncated cone shape, and the shape of the plug matches the shape of the discharge port.

[0010] Optionally, an arc-shaped cover plate is provided on the top of the necked end of the sector plate, and the arc-shaped cover plate and the necked end of the sector plate form the discharge port.

[0011] Optionally, the vibration assembly includes a vibration motor arranged on the bottom wall of the storage box.

[0012] Optionally, the bottom of the storage box is supported by a support member so that the bottom wall of the storage box extends obliquely.

[0013] Optionally, the support member includes a plurality of legs arranged at the bottom of the storage box, the plurality of legs are arranged at intervals along the direction of conveying materials of the storage box, and the lengths of the plurality of legs gradually decrease along the direction of conveying materials of the storage box.

[0014] The present invention also provides a weighing device, comprising:

[0015] The above-mentioned coal sample dropping device;

[0016] The weighing device is used to receive the coal sample output by the coal sample dropping device.

[0017] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0018] The coal sample dropping device to be protected by the present invention is provided with an inclined arc guide surface on the top of the bottom wall of the storage box. The coal sample entering the storage box will flow along the arc guide surface toward the contracted end of the arc guide surface, and under the action of the vibration component, the storage box can vibrate at a fixed frequency, so that the coal sample can be stably fed to the discharge port on the arc guide surface, avoiding the problem of coal sample blockage, and the coal sample is transported under vibration, so that the coal sample feeding amount per unit time is stable and rhythm interruption is not easy to occur, ensuring that the coal sample can stably fall on the weighing device, avoiding the problem of measurement result deviation, ensuring the accuracy of the measurement result of the weighing device, and the discharge port can be controlled by the blocking component to facilitate the control of discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0020] In order to more clearly illustrate the implementation mode of the present invention or the technical solution in the prior art, the drawings required for use in the implementation mode or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic structural diagram of the coal sample dropping device described in an embodiment of the present invention.

[0022] Description of Reference Numerals

[0023] 1. Storage box; 11. Arc-shaped guide surface; 12. Discharge port; 13. Fan-shaped plate; 14. Closing plate; 141. Extension plate; 142. Ear plate; 15. Arc-shaped cover plate; 2. Vibration assembly; 21. Vibration motor; 22. Bracket; 3. Blocking assembly; 31. Telescopic member; 32. Blocking rod; 33. Plug; 4. Support member; 41. Leg; 411. Horizontal brace; 412. Vertical brace; 413. Diagonal brace; 414. Reinforcement plate. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0025] The following description sets forth many specific details to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the implementation methods in the specification are only part of the implementation methods of the present invention, rather than all of the implementation methods.

[0026] like Figure 1As shown, the coal sample dropping device provided by the embodiment of the present invention includes a storage box 1, a vibration component 2 and a blocking component 3. The top of the bottom wall of the storage box 1 is formed with an arc-shaped guide surface 11 extending obliquely. The arc-shaped guide surface 11 can receive and accommodate coal samples. The arc-shaped guide surface 11 is in a constricted shape along the oblique downward direction. The constricted design is convenient for guiding the flow direction of the coal sample on the arc-shaped guide surface 11. The bottom wall of the storage box 1 is provided with a discharge port 12 connected to the constricted end of the arc-shaped guide surface 11, so that the coal sample on the arc-shaped guide surface 11 can flow out through the discharge port 12 and then fall into the subsequent weighing device. The vibration component 2 is arranged on the storage box 1, and is used to drive the storage box 1 to vibrate. The design position of the vibration component 2 is not limited, and it only needs to ensure that it can drive the storage box 1 to vibrate, specifically drive the bottom wall of the storage box 1 to vibrate. The blocking component 3 is used to block the discharge port 12 or to open the discharge port 12, so that the discharge port 12 can be blocked or opened according to the material discharge demand, which is convenient for controlling the coal sample transportation.

[0027] The coal sample dropping device to be protected by the present invention is formed with an inclined arc guide surface 11 on the top of the bottom wall of the storage box 1. The coal sample entering the storage box 1 will flow along the arc guide surface 11 toward the constricted end of the arc guide surface 11, and under the action of the vibration component 2, the storage box 1 can vibrate at a fixed frequency, so that the coal sample can be stably fed to the discharge port 12 on the arc guide surface 11, avoiding the problem of coal sample blockage, and the coal sample is transported under vibration, so that the coal sample feeding amount per unit time is stable and it is not easy to produce rhythm interruption phenomenon, ensuring that the coal sample can stably fall on the weighing device, avoiding the problem of measurement result deviation (if the coal sample acts on the measuring device in the form of variable speed, the measurement value of the measuring device will suddenly change, resulting in inaccurate measurement result), ensuring the accuracy of the measurement result of the weighing device, and the discharge port 12 can be controlled by the blocking component 3 to facilitate the control of discharge.

[0028] In some embodiments, Figure 1 As shown, the bottom wall of the material storage box 1 is formed by the two sides of the fan-shaped plate 13 being bent upwards in an arc shape, so that the top of the material storage box 1 is open. Wherein, the two sides of the fan-shaped plate 13 being bent upwards in an arc shape to form the material storage box 1 refers to the final form of the material storage box 1, not a molding process. When it can be understood, the material storage box 1 can be formed by the two sides of the fan-shaped plate 13 being bent upwards in an arc shape, and the material storage box 1 can also be cast and formed, and these are not restrictive.

[0029] Under this design, the cross section of the fan-shaped plate 13 can be arc-shaped, ensuring the smoothness of the flow of the coal sample. The way in which the fan-shaped plate 13 is bent to form the storage box 1 makes the top of the storage box 1 open, which is convenient for the staff to observe the coal sample on the arc-shaped guide surface 11 in real time, and then to understand the total amount of coal sample in real time, avoiding the situation of insufficient coal sample remaining.

[0030] In some embodiments, a sealing plate 14 is provided at the flared end of the sector plate 13 , that is, the arcuate guide surface 11 is provided with a sealing plate 14 along an inclined upward direction, and at least part of the blocking assembly 3 is arranged on the sealing plate 14 .

[0031] In this design, the sealing plate 14 can seal the end of the sector plate 13, so that the sealing plate 14 and the arc plate form a cavity, which is convenient for the coal sample to be stored on the arc guide surface 11. And the way that at least part of the blocking component 3 is arranged on the sealing plate 14 makes the overall structure more compact and reduces space occupation.

[0032] In some embodiments, the blocking assembly includes a telescopic member 31 disposed on the sealing plate 14, a blocking rod 32 is disposed at the output end of the telescopic member 31, the extension direction of the blocking rod 32 is consistent with the extension direction of the arc-shaped guide surface 11, and a plug 33 is disposed at one end of the plug 32 away from the telescopic member 31, and the telescopic member 31 can drive the plug 33 to move in a direction close to or away from the discharge port 12 through the plug 32. The telescopic member 31 can be an electric push rod, a cylinder, a hydraulic cylinder, etc., which can be selected according to actual needs.

[0033] In this design, the plugging rod 32 can be moved by the telescopic rod, and then the plugging head 33 can be moved by the plugging rod 32, so that the discharge port 12 can be blocked or opened, which is convenient to operate. In the process of conveying the coal sample, the plugging head 33 shrinks to the top of the arc-shaped guide surface 11, which can play a diversion role for the conveying of the coal sample, further avoiding the problem of coal sample blockage. In the process of blocking, it is only necessary to drive the plugging head 33 to move toward the discharge port 12 through the telescopic member 31 and the plugging rod 32, and the blocking is rapid.

[0034] In some embodiments, an extension plate 141 is provided on the outer side of the sealing plate 14, and the telescopic member 31 is arranged on the extension plate 141, which increases the convenience of fixing the telescopic member 31, and the telescopic member 31 and the extension plate 141 can be connected by bolts to increase the firmness of the connection. An ear plate 142 is provided on the top of the sealing plate 14, and the blocking rod 32 or the telescopic rod of the telescopic member 31 passes through the ear plate 142 and can move relative to the ear plate 142. The ear plate 142 plays a role in supporting the telescopic rod of the blocking rod 32 or the telescopic rod of the telescopic member 31, which can limit the movement of the telescopic rod of the blocking rod 32 or the telescopic rod of the telescopic member 31 and increase the smoothness of the movement of the telescopic rod of the blocking rod 32 or the telescopic rod of the telescopic member 31.

[0035] In some embodiments, the discharge port 12 is in a truncated cone shape, and the shape of the plug 33 matches the shape of the discharge port 12. The matching here means that the shape of the plug 33 is the same as or similar to the shape of the discharge port 12, so that the plug 33 can be inserted into the discharge port 12, and the outer periphery of the plug 33 fits with the inner wall of the discharge port 12 to ensure the plugging effect.

[0036] In this design, when plugging, the outer periphery of the plug 33 can fit with the inner wall of the discharge port 12 to prevent the coal sample from flowing out through the gap between the plug 33 and the discharge port 12, thereby ensuring the plugging effect.

[0037] In some embodiments, a curved cover plate 15 is provided on the top of the constricted end of the sector plate 13 , and the curved cover plate 15 and the constricted end of the sector plate 13 form a discharge port 12 .

[0038] In this design, the discharge port 12 is in a frustum shape, so as to limit the coal sample at the discharge port 12 in a circumferential direction and prevent the coal sample from being separated from the fan-shaped plate 13 .

[0039] In some embodiments, the vibration assembly 2 includes a vibration motor 21 disposed on the bottom wall of the storage box 1. The vibration motor 21 is disposed on the bottom wall of the storage box 1 through a bracket 22, and the bracket 22 is bolted or welded to the bottom wall of the storage box 1, and the vibration motor 21 and the bracket 22 are bolted or welded to increase the firmness of the connection. The vibration motor 21 is a set of adjustable eccentric blocks installed at both ends of the rotor shaft, and the centrifugal force generated by the high-speed rotation of the shaft and the eccentric blocks is used to obtain the exciting force. It is a conventional component, and its structure and working principle are not described in detail here.

[0040] In some embodiments, the bottom of the storage box 1 is supported by the support member 4 so that the bottom wall of the storage box 1 extends obliquely.

[0041] In this design, the extension direction of the bottom wall of the storage box 1 is consistent with the extension direction of the arc-shaped guide surface 11, thereby reducing the volume and weight of the storage box 1. The support member 4 can ensure the support effect of the storage box 1 and prevent the storage box 1 from being out of its position during operation.

[0042] In some embodiments, the support member 4 includes a plurality of legs 41 disposed at the bottom of the storage box 1 , the plurality of legs 41 are spaced apart along the direction of conveying materials of the storage box 1 , and the lengths of the plurality of legs 41 gradually decrease along the direction of conveying materials of the storage box 1 .

[0043] With this design, the storage box 1 supported by the multiple legs 41 can be extended at an angle to meet the supporting effect, and the design of the multiple legs 41 can increase the stability of the support.

[0044] In some embodiments, the support leg 41 includes a vertically arranged horizontal brace 411 and a vertical brace 412. The horizontal brace 411 can be bolted to the supporting component to increase the firmness of the positioning. The vertical brace 412 is connected to the bottom of the storage box 1 to support the storage box 1 at a specified height.

[0045] In some embodiments, since the height of the open end of the fan-shaped plate 13 is relatively high and has a certain angle with the horizontal plane, the support leg 41 used to support the open end of the storage box 1 also includes a diagonal brace 413, the top of the diagonal brace 413 is connected to the cover plate 14 of the storage box 1, the top of the vertical brace 412 is connected to the bottom of the diagonal brace 413, and the bottom of the vertical brace 412 is connected to the cross brace 411 to ensure the supporting effect. In addition, in order to increase the structural strength of the support leg 41, a reinforcing plate 414 is provided between the diagonal brace 413 and the vertical brace 412 and between the vertical brace 412 and the cross brace 411.

[0046] The present invention also provides a weighing device, which includes the above-mentioned coal sample dropping device and a weighing device, and the weighing device is used to receive the coal sample output by the coal sample dropping device. The coal sample dropping device includes all the technical features of the above-mentioned coal sample dropping device. The weighing device is used to weigh the coal sample, which is a conventional device in the art and is not described in detail here.

[0047] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0048] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments described herein, but should conform to the widest scope consistent with the principles and novel features of the invention described herein.

Claims

1. A coal sample dropping device, characterized in that: The invention comprises a material storage box (1), a vibration component (2) and a blocking component (3); the top of the bottom wall of the material storage box (1) is formed with an arc-shaped flow guide surface (11) extending obliquely, the arc-shaped flow guide surface (11) is in a constricted shape along the oblique downward direction, and the bottom wall of the material storage box (1) is provided with a discharge port (12) connected to the constricted end of the arc-shaped flow guide surface (11); the vibration component (2) is arranged on the material storage box (1) and is used to drive the material storage box (1) to vibrate; the blocking component (3) is used to block the discharge port (12) or leave the discharge port (12) open.

2. The coal sample dropping device according to claim 1, characterized in that: The bottom wall of the material storage box (1) is formed by bending the two side edges of the fan-shaped plate (13) upward in an arc shape, so that the top of the material storage box (1) is open.

3. The coal sample dropping device according to claim 2, characterized in that: A sealing plate (14) is provided at the expanded end of the sector plate (13), and at least part of the blocking component (3) is arranged on the sealing plate (14).

4. The coal sample dropping device according to claim 3, characterized in that: The blocking assembly comprises a telescopic member (31) arranged on the sealing plate (14); a blocking rod (32) is provided at the output end of the telescopic member (31); a plug (33) is provided at the end of the blocking rod (32) away from the telescopic member (31); the telescopic member (31) can drive the plug (33) to move in a direction approaching or away from the discharge port (12) through the blocking rod (32).

5. The coal sample dropping device according to claim 4, characterized in that: The discharge port (12) is in the shape of a truncated cone, and the shape of the plug (33) matches the shape of the discharge port (12).

6. The coal sample dropping device according to claim 2, characterized in that: An arc-shaped cover plate (15) is provided on the top of the constricted end of the sector plate (13), and the arc-shaped cover plate (15) and the constricted end of the sector plate (13) form the discharge port (12).

7. The coal sample dropping device according to claim 1, characterized in that: The vibration assembly (2) comprises a vibration motor (21) arranged on the bottom wall of the storage box (1).

8. The coal sample dropping device according to claim 1, characterized in that: The bottom of the material storage box (1) is supported by a support member (4) so ​​that the bottom wall of the material storage box (1) extends obliquely.

9. The coal sample dropping device according to claim 8, characterized in that: The support member (4) comprises a plurality of legs (41) arranged at the bottom of the material storage box (1); the plurality of legs (41) are arranged at intervals along the direction of conveying materials of the material storage box (1); and the lengths of the plurality of legs (41) gradually decrease along the direction of conveying materials of the material storage box (1).

10. A weighing device, characterized in that: include: The coal sample dropping device according to any one of claims 1 to 9; The weighing device is used to receive the coal sample output by the coal sample dropping device.

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