Quantitative pulverized coal sampling device for coal quality analysis

Abstract

According to the quantitative pulverized coal sampling device for coal quality analysis, during sampling and weighing, a bottle opening of a coal sample bottle is inverted and inserted into a supporting funnel, and a pushing air cylinder is controlled to stretch out to drive the supporting funnel and the coal sample bottle to ascend to a three-jaw air cylinder to be clamped and fixed; then an electric lifting frame is controlled to drive an electronic weighing balance and a lofting crucible to ascend to be close to a discharging opening of a supporting funnel, then a rotating air cylinder is controlled to drive a blocking plate to rotate to be separated from the discharging opening of the supporting funnel, and then pulverized coal in a coal sample bottle falls into the lofting crucible through the discharging opening of the supporting funnel; meanwhile, the electronic weighing balance is used for synchronously weighing the pulverized coal, when the weight of the pulverized coal reaches a specified sample weight range, the rotary air cylinder is reset to drive the plugging plate to plug the discharge hole of the supporting funnel, and then a detector takes down the lofting crucible and places a new lofting crucible on the electronic weighing balance; and then the steps are repeated for sampling and weighing for multiple times, the sampling and weighing process is very convenient and rapid, and the sampling efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of coal quality analysis and detection, and specifically relates to a pulverized coal quantitative sampling device for coal quality analysis. Background Art

[0002] Coal quality analysis is a series of testing and analysis methods for evaluating the properties and quality of coal. The purpose of coal quality analysis is to determine the composition, properties, and combustion characteristics of coal, including the quality, composition, calorific value, ash content, sulfur content, moisture content, volatile matter content, fixed carbon content, etc. of the coal. Currently, the process of coal quality analysis usually includes steps such as sample weighing, sample loading, and instrument determination. Before coal quality analysis, it is usually necessary to take a specified weight of coal sample from the pulverized coal bottle and put it into a crucible for analysis and detection. And during the detection, multiple groups of coal samples within the specified weight range need to be prepared to ensure the accuracy of the detection results. Now, usually, the coal sample is added manually by weighing. A small spoon such as a spatula is used to take the coal sample out of the pulverized coal bottle and pour it into the crucible placed on the balance scale pan in advance. When approaching the required sample weight, the hand needs to gently tap the small spoon to add the coal sample little by little into the crucible until the specified sample weight range is reached, and then continue to add and weigh other groups of coal samples. This process is rather cumbersome, requires multiple additions, takes a long time, and it is easy to cause the weight of the coal sample to exceed the specified range by manual addition. Summary of the Utility Model

[0003] Aiming at the deficiencies existing in the prior art, the purpose of this application is to provide a pulverized coal quantitative sampling device for coal quality analysis to solve the problems raised in the above background art.

[0004] According to one aspect of this application, a pulverized coal quantitative sampling device for coal quality analysis includes a base, a gantry support frame, a clamping member, a support funnel, a lifting assembly, a plugging assembly, an electronic weighing balance, and a sample placing crucible. The base is fixedly provided with a gantry support frame. The inner top of the gantry support frame is fixedly provided with a clamping member for clamping and fixing the body of the coal sample bottle. During sampling, the mouth of the coal sample bottle is inserted into the support funnel. Both sides of the support funnel are fixedly connected to the lifting assembly through connecting plates. The lifting assembly is fixedly installed on the gantry support frame and can drive the support funnel to move up and down. A plugging assembly is fixedly installed on the connecting plate on one side of the support funnel, and the plugging assembly can plug the sample outlet at the bottom of the support funnel. An electric lifting frame is installed on the base at the middle position of the gantry support frame. An electronic weighing balance is installed on the tabletop of the electric lifting frame, and a sample placing crucible is placed on the electronic weighing balance. The sample placing crucible is arranged directly below the sample outlet of the support funnel.

[0005] Preferably, the lifting assembly includes a pushing cylinder and a mounting plate. Pushing cylinders are symmetrically installed on the left and right side walls of the gantry support frame. The extending end of each pushing cylinder is vertically upward and fixedly provided with a mounting plate. The mounting plates on both sides are fixedly connected to one end of the connecting plates on both sides of the support funnel through screw connections, and the other end of the connecting plate is fixedly connected to the outer wall of the support funnel.

[0006] Preferably, avoidance channels are formed on the left and right side walls of the gantry support frame within the vertical movement range of the mounting plate, and the connecting plate passes through the avoidance channels.

[0007] Preferably, the blocking assembly includes a rotary cylinder and a blocking plate. A vertically arranged rotary cylinder is fixedly installed on the connecting plate on one side of the support funnel, and the rotating head of the rotary cylinder is vertically downward and fixedly connected to one end of the blocking plate. The other end of the blocking plate can rotate to the lower part of the discharge port of the support funnel and make the other end of the blocking plate closely fit with the discharge port of the support funnel.

[0008] Preferably, the clamping fixture is a three-jaw cylinder. The three-jaw cylinder is fixedly installed on the top of the gantry support frame, and the clamping jaws of the three-jaw cylinder are vertically downward. An arc-shaped clamping plate is fixedly provided on each clamping jaw of the three-jaw cylinder.

[0009] Preferably, the outer wall of the mouth of the coal sample bottle is in contact with the inner wall of the support funnel, and the top of the support funnel abuts against the stepped structure position of the bottle body of the coal sample bottle.

[0010] The advantages of the present application over the prior art are as follows: a coal powder quantitative sampling device for coal quality analysis of the present application, when sampling and weighing, first remove the bottle cap of the coal sample bottle, then invert the mouth of the coal sample bottle and insert it into the supporting funnel, so that the top of the supporting funnel is supported by the stepped structure position of the coal sample bottle body, and then control the pushing cylinder of the lifting assembly to extend, and then drive the supporting funnel to rise through the mounting plate and the connecting plate, and then drive the bottom of the coal sample bottle to be placed on the three-claw cylinder, and control the clamping claws of the three-claw cylinder to clamp and fix the coal sample bottle body, and then control the electric lifting frame to drive the electronic weighing balance and the sample crucible to rise, so that the sample crucible is close to the discharge port of the supporting funnel, and then control the sealing The rotating cylinder of the plugging assembly drives the sealing plate to rotate, so that the sealing plate is separated from the supporting funnel discharge port, and then the coal powder in the coal sample bottle falls into the sampling crucible through the supporting funnel discharge port. At the same time, the electronic weighing balance weighs the coal powder synchronously and the control system monitors the weight change of the coal powder in real time. When the weight of the coal powder in the sampling crucible reaches the specified sample weight range, the control system controls the electrical system to reset the rotating cylinder, that is, the rotating cylinder drives the sealing plate to seal the supporting funnel discharge port. Then the inspector takes down the sampling crucible and places a new sampling crucible on the electronic weighing balance, and then repeats the above steps for multiple sampling and weighing. The sampling and weighing process is very convenient and fast, which improves the sampling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a stereoscopic diagram of a coal powder quantitative sampling device for coal quality analysis according to an embodiment of the present application.

[0012] Figure 2 It is a structural diagram of a coal powder quantitative sampling device for coal quality analysis according to an embodiment of the present application.

[0013] Figure 3 This is a partial exploded view of a coal powder quantitative sampling device for coal quality analysis according to an embodiment of the present application.

[0014] Figure 4 This is a three-dimensional view of a coal powder quantitative sampling device for coal quality analysis after the sealing plate is opened according to an embodiment of the present application.

[0015] Figure numerals: 1. base; 2. gantry support frame; 3. support funnel; 4. electric lifting frame; 5. electronic weighing balance; 6. sampling crucible; 7. coal sample bottle; 8. connecting plate; 9. pushing cylinder; 10. mounting plate; 11. avoidance channel; 12. rotating cylinder; 13. sealing plate; 14. three-claw cylinder; 15. clamping claw; 16. arc clamping plate. DETAILED DESCRIPTION

[0016] To make the content of this application easier to be clearly understood, the following will, in conjunction with the accompanying drawings in the embodiments of this application, clearly and completely describe the technical solutions in the embodiments of this application. It should be noted that the terms "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the Figure 2 accompanying drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0017] Such as Figures 1 to 4As shown in the figure, a pulverized coal quantitative sampling device for coal quality analysis includes a base 1, a gantry support frame 2, a clamping fixture, a support funnel 3, a lifting assembly, a plugging assembly, an electric lifting frame 4, an electronic weighing balance 5, and a sample placing crucible 6. A gantry support frame 2 is fixedly arranged on the base 1. A clamping fixture is fixedly arranged at the inner top of the gantry support frame 2. The clamping fixture is a three-jaw cylinder 14. The three-jaw cylinder 14 is fixedly installed on the top of the gantry support frame 2, and the clamping claws 15 of the three-jaw cylinder 14 are arranged vertically downward. An arc-shaped clamping plate 16 is fixedly arranged on each clamping claw 15 of the three-jaw cylinder 14. The clamping claws 15 and the arc-shaped clamping plates 16 of the three-jaw cylinder 14 are used to clamp and fix the body of the coal sample bottle 7. During sampling, the mouth of the coal sample bottle 7 is inserted into the support funnel 3. The outer side wall of the mouth of the coal sample bottle 7 is in contact with the inner side wall of the support funnel 3. The top of the support funnel 3 abuts against the stepped structure position of the body of the coal sample bottle 7, so that the support funnel 3 can support the coal sample bottle 7. Both sides of the support funnel 3 are fixedly connected to the lifting assembly through a connecting plate 8. Among them, the lifting assembly includes a pushing cylinder 9 and a mounting plate 10. The pushing cylinders 9 are symmetrically installed on the left and right side walls of the gantry support frame 2. The extending end of each pushing cylinder 9 is arranged vertically upward and fixedly provided with a mounting plate 10. The mounting plates 10 on both sides are fixedly connected to one end of the connecting plates 8 on both sides of the support funnel 3 respectively through screw connections. The other end of the connecting plate 8 is fixedly connected to the outer side wall of the support funnel 3. Among them, the mounting plate 10 and the connecting plate 8 are fixedly connected through screw connections, so that it is convenient to remove the support funnel 3 when it is necessary to disassemble and clean the support funnel 3 or perform other operations. In addition, avoidance channels 11 are opened on the left and right side walls of the gantry support frame 2 within the up and down movement range of the mounting plate 10, and the connecting plate 8 passes through the avoidance channels 11, so that the pushing cylinder 9 can drive the support funnel 3 to lift through the mounting plate 10 and the connecting plate 8. A plugging assembly is fixedly installed on the connecting plate 8 on one side of the support funnel 3. Among them, the plugging assembly includes a rotary cylinder 12 and a plugging plate 13. A vertically arranged rotary cylinder 12 is fixedly installed on the connecting plate 8 on one side of the support funnel 3, and the rotary head of the rotary cylinder 12 is arranged vertically downward and fixedly connected to one end of the plugging plate 13. The other end of the plugging plate 13 can rotate to the lower part of the discharge port of the support funnel 3 and make the other end of the plugging plate 13 closely fit with the discharge port of the support funnel 3, and the size of the plugging plate 13 is larger than the discharge port of the support funnel 3. In the initial state, the plugging plate 13 keeps closely fitting with the discharge port of the support funnel 3 to prevent the pulverized coal in the coal sample bottle 7 from falling out from the discharge port of the support funnel 3;An electric lifting frame 4 is installed on the base 1 located in the middle of the gantry support frame 2, and an electronic weighing scale 5 is installed on the table of the electric lifting frame 4. A sample crucible 6 is placed on the electronic weighing scale 5. The sample crucible 6 is located directly below the sample outlet of the support funnel 3. When in use, the electric lifting frame 4 can drive the electronic weighing scale 5 and the sample crucible 6 to rise, so that the sample crucible 6 is close to the outlet of the support funnel 3 to avoid the error caused by the long drop distance when the blocking plate 13 is reset to block the outlet of the support funnel 3; the electronic weighing scale 5 and the electric lifting frame 4 in the device are electrically connected to the control system, and the three-claw cylinder 14, the push cylinder 9 and the rotating cylinder 12 are associated with the control system through the electrical system. ;

[0018] Working principle: when taking samples for weighing, first remove the bottle cap of the coal sample bottle 7, then invert the mouth of the coal sample bottle 7 and insert it into the supporting funnel 3, so that the top of the supporting funnel 3 is in conflict with the stepped structure of the body of the coal sample bottle 7 for support, and then control the pushing cylinder 9 of the lifting assembly to extend, and then drive the supporting funnel 3 to rise through the mounting plate 10 and the connecting plate 8, and then drive the bottom of the coal sample bottle 7 to be placed on the three-claw cylinder 14, and control the clamping claws 15 of the three-claw cylinder 14 to clamp and fix the body of the coal sample bottle 7, and then control the electric lifting frame 4 to drive the electronic weighing balance 5 and the sample crucible 6 to rise, so that the sample crucible 6 is close to the discharge port of the supporting funnel 3, and then control the rotating cylinder 12 of the blocking assembly to drive the blocking plate 13 to rotate, so that the blocking plate 13 and the supporting funnel are aligned with each other. 3 discharge port is separated, and then the coal powder in the coal sample bottle 7 falls into the sample crucible 6 through the discharge port of the supporting funnel 3, and the electronic weighing balance 5 weighs the coal powder synchronously (when weighing, the electronic weighing balance 5 peels the weight of the sample crucible 6 itself), and the control system monitors the weight change of the coal powder in real time. When the weight of the coal powder in the sample crucible 6 reaches the specified sample weight range, the control system controls the electrical system to reset the rotating cylinder 12, that is, the rotating cylinder 12 drives the sealing plate 13 to seal the discharge port of the supporting funnel 3, and then the inspection personnel takes down the sample crucible 6 and places a new sample crucible 6 on the electronic weighing balance 5, and then repeats the above steps to perform multiple sampling and weighing. The sampling and weighing process is very convenient and fast, and the sampling efficiency is improved.

[0019] 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 powder quantitative sampling device for coal quality analysis, comprising a base (1), a gantry support frame (2), a clamping piece, a supporting funnel (3), a lifting assembly, a blocking assembly, an electric lifting frame (4), an electronic weighing balance (5) and a sample placing crucible (6), characterized in that: A gantry support frame (2) is fixedly provided on the base (1), and a clamping piece is fixedly provided on the inner top of the gantry support frame (2). The clamping piece is used to clamp and fix the body of the coal sample bottle (7). When sampling, the mouth of the coal sample bottle (7) is inserted into the support funnel (3). Both sides of the support funnel (3) are fixedly connected to the lifting assembly through connecting plates (8). The lifting assembly is fixedly installed on the gantry support frame (2). The lifting assembly can drive the support funnel (3) to move up and down. A blocking component is fixedly mounted on the connecting plate (8) on one side of the funnel (3), and the blocking component is capable of blocking the sample outlet at the bottom of the supporting funnel (3). An electric lifting frame (4) is mounted on the base (1) located at the middle position of the gantry-type supporting frame (2), and an electronic weighing scale (5) is mounted on the table of the electric lifting frame (4). A sample placing crucible (6) is placed on the electronic weighing scale (5), and the sample placing crucible (6) is arranged directly below the sample outlet of the supporting funnel (3).

2. A coal powder quantitative sampling device for coal quality analysis according to claim 1, characterized in that: The lifting assembly comprises a pushing cylinder (9) and a mounting plate (10), and the pushing cylinders (9) are symmetrically mounted on the left and right side walls of the gantry support frame (2), and the protruding end of each pushing cylinder (9) is vertically arranged upward and fixed with a mounting plate (10), and the mounting plates (10) on both sides are fixedly connected to one end of the connecting plates (8) on both sides of the supporting funnel (3) by screw connections, and the other end of the connecting plate (8) is fixedly connected to the outer wall of the supporting funnel (3).

3. A coal powder quantitative sampling device for coal quality analysis according to claim 2, characterized in that: An escape channel (11) is provided on the left and right side walls of the gantry support frame (2) within the up and down moving range of the mounting plate (10), and the connecting plate (8) passes through the escape channel (11).

4. A coal powder quantitative sampling device for coal quality analysis according to claim 2, characterized in that: The blocking assembly comprises a rotating cylinder (12) and a blocking plate (13); a vertically arranged rotating cylinder (12) is fixedly mounted on the connecting plate (8) located on one side of the supporting funnel (3); a rotating head of the rotating cylinder (12) is vertically arranged downward and fixedly connected to one end of the blocking plate (13); the other end of the blocking plate (13) can be rotated to below the discharge port of the supporting funnel (3) so that the other end of the blocking plate (13) is tightly fitted with the discharge port of the supporting funnel (3).

5. The coal powder quantitative sampling device for coal quality analysis according to claim 1, characterized in that: The clamping member is a three-claw cylinder (14), which is fixedly installed on the top of the gantry support frame (2), and the clamping claws (15) of the three-claw cylinder (14) are arranged vertically downward, and each clamping claw (15) of the three-claw cylinder (14) is fixedly provided with an arc-shaped clamping plate (16).

6. A coal powder quantitative sampling device for coal quality analysis according to claim 1, characterized in that: The outer wall of the mouth of the coal sample bottle (7) fits with the inner wall of the supporting funnel (3), and the top of the supporting funnel (3) conflicts with the stepped structure of the body of the coal sample bottle (7).

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