Coal sample drying device for coal quality analysis

Abstract

According to the coal sample drying device for coal quality analysis, during drying, a plurality of sample placing crucibles containing coal samples are placed on a placing disc, the placing disc is pushed into a drying box body, the sample placing crucibles correspond to a plurality of stirring assemblies one to one, then a box door is closed, a heater, an air blower and a ventilation fan are started, and the sample placing crucibles are placed on the placing disc; then an air blower blows air into a heating box, the air is heated by a heater and then enters a drying box body to circularly heat and dry a coal sample, at the moment, an electric cylinder of a pushing assembly is controlled to stretch out to drive a sliding supporting plate to move downwards, and then a stirring assembly is driven to move downwards; according to the coal sample drying device, the stirring assembly is arranged in the sample placing crucible, the stirring bent rod of the stirring assembly is arranged in the corresponding sample placing crucible, then the rotating motor is started to drive the stirring bent rod to rotate slowly through the rotating shaft, the coal sample in the sample placing crucible is stirred slowly, the coal sample makes full contact with hot air, the water evaporation speed is increased, and the drying efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of coal quality analysis and detection, and in particular to a coal sample drying device for coal quality analysis. Background Art

[0002] Coal quality analysis is a series of tests and analysis methods to evaluate the properties and quality of coal. The purpose of coal quality analysis is to determine the composition, properties and combustion characteristics of coal, which include coal quality, composition, calorific value, ash content, sulfur content, moisture content, volatile matter content, fixed carbon content, etc. In the moisture detection of sample coal, it is necessary to conduct comparative tests on the sample coal before and after drying to achieve the purpose of testing coal quality, and it is usually necessary to prepare multiple groups of samples during the detection and analysis to avoid the randomness of the test results. However, the existing coal sample drying equipment usually dries multiple groups of coal samples by hot air. During drying, the coal samples are mostly in a piled state, the internal contact of the coal samples with the hot air is insufficient, the water evaporates slowly, and the drying efficiency is low. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of this application is to provide a coal sample drying device for coal quality analysis to solve the problems raised in the above-mentioned background technology.

[0004] According to one aspect of the present application, a coal sample drying device for coal quality analysis comprises a drying box, a placement plate, a sample crucible, a partition shell, a stirring assembly, a pushing assembly, a heater, a blower and a box door, a placement plate is slidably provided on the bottom surface of the interior of the drying box, a plurality of sample crucibles are evenly and equidistantly placed on the placement plate, each sample crucible is used to place a coal quality analysis sample, a partition shell is fixedly provided on the upper part of the interior of the drying box, the partition shell divides the upper and lower chambers of the interior of the drying box into a transmission chamber and a drying chamber respectively, a plurality of stirring assemblies are evenly and equidistantly distributed in the transmission chamber, and the plurality of stirring assemblies are fixedly provided on the pushing assembly, the pushing assembly can drive the stirring assembly to move up and down, and The number and positions of the multiple stirring assemblies correspond to the number and positions of the multiple sample placing crucibles, and each stirring assembly vertically passes through the partition shell downward and extends to above the sample placing crucible corresponding to it in the drying chamber. A heating box is fixedly provided on one side of the drying box body, a heater is installed inside the heating box, and the inner cavity of the heating box is connected with the drying chamber in the drying box body through a connecting channel. A blower is fixedly installed on the top of the heating box, and the air outlet of the blower is connected with the inner cavity of the heating box. A box door is sealed and hinged at the front box opening of the drying box body, and an observation window is provided on the box door. A ventilation fan is provided on the rear side of the drying box body.

[0005] Preferably, the pushing assembly includes an electric cylinder and a sliding support plate, the electric cylinder is vertically fixedly installed on the top of the drying box, and the protruding end of the electric cylinder slides through the top of the drying box and vertically extends into the transmission cavity and is fixedly connected to the middle part of the sliding support plate, the sliding support plate is horizontally arranged, and the sliding support plate can move up and down in the transmission cavity, and a plurality of the stirring assemblies are evenly and equidistantly distributed and fixedly arranged on the sliding support plate.

[0006] Preferably, the stirring assembly includes a rotating motor, a rotating shaft and a stirring bent rod, the rotating motor is fixedly mounted on the sliding support plate, the output shaft of the rotating motor is fixedly connected to the upper end of the rotating shaft, the rotating shaft vertically penetrates the partition shell, and a plurality of stirring bent rods are evenly and equidistantly fixed on the circumference of the lower end of the rotating shaft along its circumference, and the stirring bent rods are located directly above the sample placement crucible.

[0007] Preferably, the shape and structure of the plurality of stirring bent rods are adapted to the shape and structure of the inner side wall of the lofting crucible.

[0008] Preferably, a plurality of placement grooves are evenly and equidistantly formed on the top of the placement plate, a plurality of the sample placing crucibles are respectively placed in the plurality of placement grooves, and a pick-up and place plate is fixedly provided on the front side of the placement plate.

[0009] Preferably, slides are fixedly provided on the left and right inner walls of the drying box body located at the drying chamber position, and bosses are provided on the left and right sides of the placement plate. The placement plate is placed in the drying box body through the sliding cooperation of the bosses and the slides, and the bottom surface of the placement plate is in contact with the bottom surface inside the drying box body.

[0010] Preferably, a fan casing is arranged on the outer peripheral side of the blower, ventilation holes are opened on the fan casing, and the fan casing is fixedly connected to the heating box.

[0011] The advantages of the present application compared with the prior art are: a coal sample drying device for coal quality analysis of the present application, through the stirring assembly and the pushing assembly arranged above the sampling crucible in the drying box, so that during drying, multiple sampling crucibles containing coal samples are placed on the placing plate, and the placing plate is pushed into the drying box, so that multiple sampling crucibles correspond to multiple stirring assemblies one by one, and then the box door is closed, and then the heater, blower and ventilation fan are started, so that the blower blows air into the heating box and enters the drying box after being heated by the heater to circulate and heat and dry the coal sample. At this time, the electric cylinder controlling the pushing assembly is extended to drive the sliding support plate to move downward, and then drive the stirring assembly to move downward, so that the stirring bent rod of the stirring assembly is placed in the corresponding sampling crucible, and then the rotating motor is started to drive the stirring bent rod to rotate slowly through the rotating shaft, so as to slowly stir the coal sample in the sampling crucible, so that the coal sample is fully in contact with the hot air, the evaporation rate of water is accelerated, and the drying efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a stereoscopic diagram of a coal sample drying device for coal quality analysis according to an embodiment of the present application.

[0013] Figure 2 This is a three-dimensional diagram of a coal sample drying device for coal quality analysis with its door opened according to an embodiment of the present application.

[0014] Figure 3 It is a sectional stereoscopic diagram of a coal sample drying device for coal quality analysis according to an embodiment of the present application.

[0015] Figure 4 It is a main cross-sectional view of a coal sample drying device for coal quality analysis according to an embodiment of the present application.

[0016] Figure 5 It is a side sectional view of a coal sample drying device for coal quality analysis according to an embodiment of the present application.

[0017] Figure 6 It is a stereoscopic diagram of a placement plate and a sample crucible of a coal sample drying device for coal quality analysis according to an embodiment of the present application.

[0018] Figure numerals: 1. drying box; 101. transmission chamber; 102. drying chamber; 2. placement plate; 201. placement groove; 202. boss; 203. pick-up and placement plate; 3. sample placement crucible; 4. partition shell; 5. stirring assembly; 501. rotating motor; 502. rotating shaft; 503. stirring bending rod; 6. pushing assembly; 601. electric cylinder; 602. sliding support plate; 7. heater; 8. blower; 9. box door; 10. heating box; 11. observation window; 12. ventilation fan; 13. slide; 14. fan housing. DETAILED DESCRIPTION

[0019] In order to make the content of this application easier to understand, the technical solutions in the embodiments of this application will be described clearly and completely in conjunction with the drawings in the embodiments of this application. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the attached drawings. Figure 4 As used herein, the terms "inward" and "outward" refer to directions toward and away from, respectively, the geometric center of the particular component.

[0020] like Figure 1 to Figure 6As shown, a coal sample drying device for coal quality analysis includes a drying box 1, a placement plate 2, a sample crucible 3, a partition shell 4, a stirring component 5, a pushing component 6, a heater 7, a blower 8 and a box door 9. A partition shell 4 is fixedly provided on the upper part of the drying box 1. The partition shell 4 divides the upper and lower chambers of the drying box 1 into a transmission chamber 101 and a drying chamber 102 respectively. A placement plate 2 is slidably provided on the bottom surface of the drying box 1. Specifically, slideways 13 are fixedly provided on the left and right inner walls of the drying box 1 located at the position of the drying chamber 102. Bosses 202 are provided on the left and right sides of the placement plate 2. The placement plate 2 slides through the bosses 202 and the slideways 13. The placing plate 2 is placed in the drying box 1, and the bottom surface of the placing plate 2 is in contact with the bottom surface of the drying box 1. This arrangement can ensure that the placing plate 2 is stably placed. A plurality of placing grooves 201 are evenly and equidistantly provided on the top of the placing plate 2. A plurality of placing crucibles 3 are respectively placed in the plurality of placing grooves 201. Each placing crucible 3 is used to place coal quality analysis samples. In addition, a pick-up and placement plate 203 is fixedly provided on the front side of the placing plate 2, so that the staff can use clamps or other tools to act on the pick-up and placement plate 203 to pick up and place the placing plate 2. A plurality of stirring components 5 are evenly and equidistantly distributed in the transmission cavity 101 inside the drying box 1, and the plurality of stirring components 5 are fixedly provided on the push rod. The pushing assembly 6 is on the moving assembly 6, and the pushing assembly 6 can drive the stirring assembly 5 to move up and down. After the placing plate 2 and the sample-laying crucible 3 are slidably placed in the drying box body 1, the number and position of the plurality of stirring assemblies 5 correspond to the number and position of the plurality of sample-laying crucibles 3, and each stirring assembly 5 vertically passes through the partition shell 4 downward and extends to the top of the sample-laying crucible 3 corresponding to it in the drying chamber 102. In implementation, the stirring assembly 5 can be placed in the corresponding sample-laying crucible 3 under the drive of the pushing assembly 6. A heating box 10 is fixedly provided on one side of the drying box body 1, and a heater 7 is installed inside the heating box 10, and the inner cavity of the heating box 10 is connected to the drying chamber 102 through a connecting channel. The drying chamber 102 in the drying box 1 is connected, and a blower 8 is fixedly installed on the top of the heating box 10. The air outlet of the blower 8 is connected to the inner cavity of the heating box 10. A fan casing 14 is arranged on the outer peripheral side of the blower 8 to prevent foreign matter and impurities from entering the blower 8 and affecting the normal operation of the blower 8. Ventilation holes are opened on the fan casing 14, and the fan casing 14 is fixedly connected to the heating box 10. A box door 9 is sealed and hingedly provided at the front box opening of the drying box 1, and an observation window 11 is provided on the box door 9 to facilitate observation of the drying condition of the coal sample. A ventilation fan 12 is arranged on the rear side of the drying box 1 to ensure the circulation of evaporated moisture and excess hot air from the coal sample;In this design, by setting the stirring assembly 5 and the pushing assembly 6 above the sample crucible 3 in the drying box 1, during drying, the pushing assembly 6 can be controlled to drive the stirring assembly 5 to move downward, so that the stirring assembly 5 is placed in the corresponding sample crucible 3, and the coal sample in the sample crucible 3 is slowly stirred, so that the coal sample is fully contacted with the hot air, the evaporation rate of water is accelerated, and the drying efficiency is improved. ;

[0021] In one embodiment, in combination Figure 3 to Figure 5 The pushing component 6 includes an electric cylinder 601 and a sliding support plate 602. The electric cylinder 601 is vertically fixedly installed on the top of the drying box body 1, and the protruding end of the electric cylinder 601 slides through the top of the drying box body 1 and extends vertically into the transmission chamber 101 and is fixedly connected to the middle of the sliding support plate 602. The sliding support plate 602 is horizontally arranged, and the sliding support plate 602 can move up and down in the transmission chamber 101. Multiple stirring components 5 are evenly and equidistantly distributed and fixed on the sliding support plate 602. In this design, the setting of the electric cylinder 601 can be stopped at any position, and then the stirring component 5 can be driven to move in the vertical direction to any position of the sample crucible 3. In implementation, the movement of the stirring component 5 driven by the electric cylinder 601 can be observed and controlled through the observation window 11 to avoid excessive or insufficient movement of the stirring component 5, so as to ensure that the stirring component 5 can stir the coal sample in the sample crucible 3 well.

[0022] In one embodiment, referring to Figure 3 to Figure 5 The stirring assembly 5 includes a rotating motor 501, a rotating shaft 502 and a stirring bent rod 503. The rotating motor 501 is fixedly installed on the sliding support plate 602. The output shaft of the rotating motor 501 is fixedly connected to the upper end of the rotating shaft 502. The rotating shaft 502 vertically penetrates the partition shell 4. A plurality of stirring bent rods 503 are evenly and equidistantly fixed on the circumference of the lower end of the rotating shaft 502 along its circumference. The stirring bent rods 503 are located directly above the sample crucible 3. The shape structure of the plurality of stirring bent rods 503 is adapted to the shape structure of the inner wall of the sample crucible 3 to ensure that the stirring bent rods 503 can better fit the inner wall of the sample crucible 3 to stir the coal sample.

[0023] Working principle: when in use, multiple groups of coal samples to be analyzed and tested are placed in multiple sample crucibles 3 respectively, and then the multiple sample crucibles 3 are placed on the placement plate 2, and the placement plate 2 is pushed into the drying box 1, so that the multiple sample crucibles 3 correspond to the stirring curved rods 503 of the multiple stirring components 5 one by one, and then the box door 9 is closed, and then the heater 7, the blower 8 and the ventilation fan 12 are started, so that the blower 8 blows air into the heating box 10 and enters the drying box 1 after being heated by the heater 7 to circulate and heat and dry the coal samples. At this time, the electric cylinder 601 of the control pushing component 6 is extended to drive the sliding support plate 602 to move downward, and then drive the stirring component 5 to move downward, so that the stirring curved rod 503 of the stirring component 5 is placed in the corresponding sample crucible 3, and then the rotating motor 501 is started to drive the stirring curved rod to rotate slowly through the rotating shaft 502, and then the coal sample in the sample crucible 3 is slowly stirred, so that the coal sample is fully in contact with the hot air, the evaporation rate of water is accelerated, and the drying efficiency is improved.

[0024] The above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application are described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, without departing from the spirit and scope defined by the claims of the present application.

Claims

1. A coal sample drying device for coal quality analysis, comprising a drying box (1), a placement plate (2), a sample placing crucible (3), a partition shell (4), a stirring component (5), a pushing component (6), a heater (7), a blower (8) and a box door (9), characterized in that: A placement plate (2) is slidably provided on the bottom surface of the drying box (1), and a plurality of sample crucibles (3) are evenly and equidistantly placed on the placement plate (2), and each sample crucible (3) is used to place a coal quality analysis sample. A partition shell (4) is fixedly provided on the upper part of the drying box (1), and the partition shell (4) divides the upper and lower chambers of the drying box (1) into a transmission chamber (101) and a drying chamber (102) respectively. A plurality of stirring assemblies (5) are evenly and equidistantly distributed in the transmission chamber (101), and the plurality of stirring assemblies (5) are fixedly provided on a pushing assembly (6), and the pushing assembly (6) can drive the stirring assemblies (5) to move up and down, and the number and position of the plurality of stirring assemblies (5) correspond one-to-one to the number and position of the plurality of sample crucibles (3), and each stirring assemblies (5) is provided with a plurality of stirring assemblies (5) and a plurality of stirring assemblies (5). Each of the stirring assemblies (5) vertically passes through the partition shell (4) downward and extends to the top of the sample placing crucible (3) correspondingly arranged in the drying chamber (102). A heating box (10) is fixedly arranged on one side of the drying box body (1). A heater (7) is installed inside the heating box (10), and the inner cavity of the heating box (10) is connected with the drying chamber (102) in the drying box body (1) through a connecting channel. A blower (8) is fixedly installed on the top of the heating box (10), and the air outlet of the blower (8) is connected with the inner cavity of the heating box (10). A box door (9) is sealed and hingedly arranged at the front box opening of the drying box body (1), and an observation window (11) is arranged on the box door (9). A ventilation fan (12) is arranged on the rear side of the drying box body (1).

2. A coal sample drying device for coal quality analysis according to claim 1, characterized in that: The pushing assembly (6) comprises an electric cylinder (601) and a sliding support plate (602); the electric cylinder (601) is vertically fixedly installed on the top of the drying box (1); the protruding end of the electric cylinder (601) slides through the top of the drying box (1) and vertically extends into the transmission cavity (101) and is fixedly connected to the middle of the sliding support plate (602); the sliding support plate (602) is horizontally arranged and can move up and down in the transmission cavity (101); and a plurality of the stirring assemblies (5) are evenly and equidistantly distributed and fixedly arranged on the sliding support plate (602).

3. A coal sample drying device for coal quality analysis according to claim 2, characterized in that: The stirring assembly (5) comprises a rotating motor (501), a rotating shaft (502) and a stirring curved rod (503); the rotating motor (501) is fixedly mounted on the sliding support plate (602); the output shaft of the rotating motor (501) is fixedly connected to the upper end of the rotating shaft (502); the rotating shaft (502) vertically penetrates the partition shell (4); a plurality of stirring curved rods (503) are fixedly mounted on the circumference of the lower end of the rotating shaft (502) at uniform and equidistant intervals along the circumference thereof; the stirring curved rods (503) are located directly above the sample lofting crucible (3).

4. A coal sample drying device for coal quality analysis according to claim 3, characterized in that: The shape and structure of the plurality of stirring bent rods (503) are adapted to the shape and structure of the inner wall of the sample lofting crucible (3).

5. The coal sample drying device for coal quality analysis according to claim 1, characterized in that: The top of the placement plate (2) is evenly and equidistantly provided with a plurality of placement grooves (201), and the plurality of sample placement crucibles (3) are respectively placed in the plurality of placement grooves (201), and a pick-up and placement plate (203) is fixedly provided on the front side of the placement plate (2).

6. A coal sample drying device for coal quality analysis according to claim 5, characterized in that: Slideways (13) are fixedly provided on the left and right inner walls of the drying box (1) located at the drying chamber (102), and bosses (202) are provided on the left and right sides of the placement plate (2). The placement plate (2) is placed in the drying box (1) through the sliding fit between the bosses (202) and the slideways (13), and the bottom surface of the placement plate (2) is in contact with the bottom surface of the interior of the drying box (1).

7. A coal sample drying device for coal quality analysis according to claim 1, characterized in that: A fan housing (14) is provided on the outer peripheral side of the blower (8), a ventilation hole is provided on the fan housing (14), and the fan housing (14) is fixedly connected to the heating box (10).

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