Automatic limestone powder sampling device for coal-fired power plant

Abstract

The utility model discloses an automatic limestone powder sampling device for a coal-fired power plant, which comprises a powder bin top cover, a mounting frame is arranged at the top of the powder bin top cover, and a mounting rack is fixedly mounted at the top of the mounting frame. The first air cylinder is used for driving the fixed disc and the driving disc to move up and down so as to drive the sampling bottle to move up and down, so that the sampling bottle enters the powder bin to sample limestone powder, manual sampling can be avoided, a worker is prevented from climbing a vehicle body, and the safety of the worker is improved; a first motor is arranged for driving a driving disc to rotate, then the driving disc drives a limiting rod to move in a moving groove, the limiting rod is unfolded outwards, then the limiting rod drives a sampling bottle to move outwards, limestone powder at different positions can be conveniently sampled by the sampling bottle, and meanwhile the problem that the sampling bottle is inconvenient to sample when the limestone powder is sampled at present is solved. A worker needs to climb to the top of the powder pulling vehicle for operation, so that the sampling process is not safe.

Description

Technical Field

[0001] The utility model relates to the technical field of limestone powder sampling, in particular to an automatic limestone powder sampling device for a coal-fired power plant. Background Art

[0002] Coal has become one of the main fuels for traditional thermal power plants due to its high calorific value and relatively low cost. However, the combustion of coal will emit a large amount of harmful substances such as SO2, nitrogen oxides, particulate matter, etc., causing air pollution and triggering a series of environmental and health problems. In recent years, the state has set higher and higher requirements for the emission indicators of flue gas from coal-fired power plants. In some areas, the SO2 concentration in the flue gas exported by coal-fired power plants is required to reach the ultra-clean emission standard of 35mg / m3. The limestone-limestone desulfurization method is widely used because of its high desulfurization efficiency, easy and cheap desulfurizer, and comprehensive utilization of by-products. Since the limestone powder may affect the chemical reaction in the tower due to the presence of impurities or the particle size does not meet the requirements during the reaction process, in order to ensure that the quality of the limestone powder used meets the technical standards, its material composition, content and particle size must be measured before entering the powder bin. In order to ensure that the quality of the limestone powder used meets the technical standards, its material content and particle size must be measured before entering the powder bin.

[0003] In view of the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: currently, when sampling limestone powder, workers are required to climb to the top of the powder truck to perform the operation, which makes the sampling process unsafe, and when sampling, workers can only sample the limestone powder at the manhole cover, which will result in incomplete sampling; therefore, in view of the above problems, an automatic sampling device for limestone powder in a coal-fired power plant is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic sampling device for limestone powder in a coal-fired power plant, which has the advantages of improving the safety of workers' sampling and improving the comprehensiveness of sampling. It solves the problem that when sampling limestone powder, workers need to climb to the top of the powder truck to perform the operation, which makes the sampling process unsafe. During sampling, workers can only sample the limestone powder at the manhole cover, which will lead to incomplete sampling.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic sampling device for limestone powder in a coal-fired power plant, comprising a powder bin cover, a mounting frame is arranged on the top of the powder bin cover, a mounting frame is fixedly installed on the top of the mounting frame, a first cylinder is fixedly installed on the top of the mounting frame, a connecting frame is fixedly installed on the output end of the first cylinder, a fixed disk is fixedly installed on the bottom of the connecting frame, a uniformly distributed moving groove is opened on the top of the fixed disk, a first motor is fixedly installed on the top of the fixed disk and located on the inner side of the connecting frame, the output end of the first motor penetrates the fixed disk and is fixedly installed with a driving disk, the driving disk is located below the fixed disk, a uniformly distributed driving groove is opened on the top of the driving disk, a limit rod is slidably connected inside the moving groove, the bottom of the limit rod penetrates the driving groove, a rotating block is fixedly installed on the bottom of the driving groove, the bottom of the rotating block is rotatably connected with a frame body, an internal threaded ring is fixedly installed on the inner side of the frame, a sampling bottle is arranged below the rotating block, a top groove is opened on the top of the powder bin cover, and a closing cover is arranged inside the top groove.

[0006] The effects achieved by the above components are as follows: by setting an installation frame and a mounting frame to cooperate with each other to install and fix the first cylinder, the stability of the first cylinder is improved; by setting the first cylinder to drive the fixed plate and the driving plate to move up and down, and then drive the sampling bottle to move up and down, the sampling bottle enters the powder bin to sample the limestone powder, which can avoid manual sampling and thus avoid workers climbing the vehicle body, thereby improving the safety of the workers; by setting the first motor to drive the driving plate to rotate, and then the driving plate drives the limit rod to move inside the moving groove, the limit rod is expanded outward, and then the limit rod drives the sampling bottle to move outward, so that the sampling bottle is convenient for sampling limestone powder at different positions, thereby improving the accuracy of sample inspection.

[0007] Preferably, mounting bolts are provided on both sides of the top of the mounting frame, and the mounting frame is fixedly connected to the powder bin top cover via the mounting bolts.

[0008] The effects achieved by the above components are: by providing the mounting bolts, it is convenient to install and disassemble the mounting frame, thereby making it convenient to disassemble and repair the device.

[0009] Preferably, a limiting groove is provided at the bottom of the fixed disk, and a limiting block is fixedly installed at the top of the driving disk, and the limiting block is located inside the limiting groove.

[0010] The effect achieved by the above components is: by setting the limit block and the limit groove to cooperate with each other to limit the driving disk, the stability of the driving disk driving the limit rod to move is improved, and the sampling bottle is further prevented from moving and deviating.

[0011] Preferably, an external threaded ring is fixedly mounted on the top of the sampling bottle, and the external threaded ring is located on the inner side of the internal threaded ring and is threadedly connected to the internal threaded ring.

[0012] The effect achieved by the above components is: by providing the external threaded ring, it is convenient to install and disassemble the sampling bottle, thereby making it convenient for operators to take and install the sampling bottle, thereby facilitating sampling.

[0013] Preferably, a storage groove is opened inside the powder bin top cover and located on the right side of the top groove, the right side of the closing cover is located inside the storage groove, a second motor is fixedly installed on the right side of the inner cavity of the storage groove, a screw is fixedly installed on the output end of the second motor, a threaded hole is opened inside the closing cover, and the left side of the screw extends to the inside of the threaded hole and is threadedly connected to the threaded hole.

[0014] The effect achieved by the above components is: by setting a second motor to drive the screw to rotate, with the cooperation of the threaded hole, the screw drives the closing cover to move, thereby facilitating the closing cover to open and close the top groove, avoiding manual opening and closing by the operator.

[0015] Preferably, a stopper is fixedly mounted on the top of the closing cover, and the stopper is snap-connected to the left side of the inner cavity of the top groove.

[0016] The effect achieved by the above components is: by setting the stopper to limit the closing cover, it is prevented from colliding with the second motor when the closing cover is stored in the storage groove, thereby preventing the second motor from being damaged.

[0017] Preferably, a sealing groove is opened on the left side of the top groove, and the left side of the closing cover is located inside the sealing groove.

[0018] The effect achieved by the above components is: by setting the sealing groove, it is used to improve the sealing effect of the closing cover on the top groove, thereby preventing rain and snow from entering the powder bin.

[0019] Preferably, a groove is provided on the left side of the closing cover, a sealing ring is provided inside the groove, and the sealing ring is in contact with the sealing groove.

[0020] The effect achieved by the above components is: by arranging the sealing ring to increase the sealing between the closing cover and the sealing groove, rain and snow are prevented from entering the powder bin through the gap, thereby improving the sealing inside the powder bin.

[0021] Preferably, a support rod is fixedly installed on the top of the powder bin top cover, and a rain shield is fixedly installed on the top of the support rod. The rain shield is located above the mounting frame, and a limiting through groove is provided inside the rain shield. A protective cover is slidably connected inside the limiting through groove. A second cylinder is fixedly installed on the top of the rain shield, and the output end of the second cylinder is fixedly connected to the top of the inner cavity of the protective cover.

[0022] The effect achieved by the above components is: by setting a second cylinder to drive the protective cover to move up and down, when the protective cover moves down, the second cylinder will block rain and snow at the top groove to prevent rain and snow from gathering at the top groove. Under the action of the limiting groove, the protective cover will be limited, thereby improving the stability of the protective cover when moving up and down.

[0023] Preferably, an observation window is provided on the left side of the protective cover, and the observation window is located on the left side of the top groove.

[0024] The effect achieved by the above components is: by setting the observation window, it is convenient for the operator to check the situation at the top groove. In heavy snow and rain, rain and snow will inevitably gather at the top groove, which is convenient for the operator to clean the gathered rain and snow before opening the closed cover to prevent rain and snow from entering the powder bin when the top groove is opened.

[0025] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0026] The utility model provides an installation frame and a mounting bracket to cooperate with each other for installing and fixing the first cylinder, thereby improving the stability of the first cylinder, and the first cylinder is provided to drive the fixing plate and the driving plate to move up and down, thereby driving the sampling bottle to move up and down, so that the sampling bottle enters the powder bin to sample the limestone powder, which can avoid manual sampling, thereby avoiding workers from climbing the vehicle body, thereby improving the safety of workers, and the first motor is provided to drive the driving plate to rotate, thereby the driving plate drives the limit rod to move inside the moving groove, so that the limit rod is expanded outward, and then the limit rod drives the sampling bottle to move outward, so that the sampling bottle is convenient for sampling limestone powder at different positions, thereby improving the accuracy of sample inspection, and at the same time solves the problem that when sampling limestone powder, the workers currently need to climb to the top of the powder pulling vehicle to perform the operation, resulting in an unsafe sampling process, and when sampling, the workers can only sample the limestone powder at the manhole cover, which will lead to the problem of incomplete sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the mounting frame of the utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the fixed disk of the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the drive disk of the utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the fixed disk and the driving disk of the utility model;

[0032] Figure 6 For this utility model Figure 5 A partial enlarged view of the middle A;

[0033] Figure 7 This is a schematic diagram of the cross-sectional structure of the powder bin top cover of the utility model;

[0034] Figure 8 This is a schematic diagram of the structure of the closure cover of the utility model;

[0035] Fig. 9 This is a schematic diagram of the structure of the rain shield and protective cover of the utility model.

[0036] In the figure: 1. powder bin top cover; 2. mounting frame; 3. mounting frame; 4. first cylinder; 5. connecting frame; 6. fixing plate; 7. moving slot; 8. first motor; 9. driving plate; 10. driving slot; 11. limiting block; 12. limiting rod; 13. rotating block; 14. frame; 15. internal thread ring; 16. external thread ring; 17. sampling bottle; 18. top slot; 19. storage slot; 20. closing cover; 21. second motor; 22. screw; 23. threaded hole; 24. block; 25. groove; 26. sealing ring; 27. support rod; 28. rain shield; 29. ​​limiting slot; 30. second cylinder; 31. protective cover; 32. observation window. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] See also Figure 1-9A limestone powder automatic sampling device for a coal-fired power plant comprises a powder bin cover 1, a mounting frame 2 is arranged on the top of the powder bin cover 1, a mounting frame 3 is fixedly installed on the top of the mounting frame 2, a first cylinder 4 is fixedly installed on the top of the mounting frame 3, a connecting frame 5 is fixedly installed on the output end of the first cylinder 4, a fixing plate 6 is fixedly installed on the bottom of the connecting frame 5, a uniformly distributed moving groove 7 is opened on the top of the fixing plate 6, a first motor 8 is fixedly installed on the top of the fixing plate 6 and located on the inner side of the connecting frame 5, and the output end of the first motor 8 passes through the fixing plate 6 and is fixedly installed A driving disk 9 is provided, and the driving disk 9 is located below the fixed disk 6. The top of the driving disk 9 is provided with evenly distributed driving grooves 10. The movable groove 7 is internally slidably connected with a limit rod 12, and the bottom of the limit rod 12 passes through the driving groove 10. A rotating block 13 is fixedly installed at the bottom of the driving groove 10, and a frame 14 is rotatably connected to the bottom of the rotating block 13. An internal threaded ring 15 is fixedly installed on the inner side of the frame 14. A sampling bottle 17 is arranged below the rotating block 13. A top groove 18 is provided on the top of the powder bin top cover 1, and a closing cover 20 is arranged inside the top groove 18.

[0039] Specifically, mounting bolts are provided on both sides of the top of the mounting frame 2 , and the mounting frame 2 is fixedly connected to the powder bin top cover 1 via the mounting bolts.

[0040] The mounting bolts facilitate installation and disassembly of the mounting frame 2, thereby facilitating disassembly and maintenance of the device.

[0041] Specifically, a limiting groove is provided at the bottom of the fixed disk 6 , and a limiting block 11 is fixedly installed on the top of the driving disk 9 , and the limiting block 11 is located inside the limiting groove.

[0042] The limiting block 11 and the limiting groove cooperate with each other to limit the driving disk 9, thereby improving the stability when the driving disk 9 drives the limiting rod 12 to move, and further preventing the sampling bottle 17 from moving and deviating.

[0043] Specifically, an external threaded ring 16 is fixedly installed on the top of the sampling bottle 17 . The external threaded ring 16 is located on the inner side of the internal threaded ring 15 and is threadedly connected to the internal threaded ring 15 .

[0044] The external threaded ring 16 facilitates installation and removal of the sampling bottle 17, thereby facilitating the operator to take and install the sampling bottle 17, thereby facilitating sampling.

[0045] Specifically, a storage groove 19 is opened inside the powder bin top cover 1 and on the right side of the top groove 18, the right side of the closing cover 20 is located inside the storage groove 19, a second motor 21 is fixedly installed on the right side of the inner cavity of the storage groove 19, a screw 22 is fixedly installed on the output end of the second motor 21, a threaded hole 23 is opened inside the closing cover 20, and the left side of the screw 22 extends to the inside of the threaded hole 23 and is threadedly connected to the threaded hole 23.

[0046] The second motor 21 is used to drive the screw 22 to rotate. With the cooperation of the threaded hole 23, the screw 22 drives the closing cover 20 to move, thereby facilitating the closing cover 20 to open and close the top groove 18, avoiding manual opening and closing by the operator.

[0047] Specifically, a stopper 24 is fixedly mounted on the top of the closing cover 20 , and the stopper 24 is snap-connected to the left side of the inner cavity of the top groove 18 .

[0048] The stopper 24 is used to limit the closing cover 20 , so as to prevent the closing cover 20 from colliding with the second motor 21 when the closing cover 20 is stored in the storage groove 19 , thereby preventing the second motor 21 from being damaged.

[0049] Specifically, a sealing groove is opened on the left side of the top groove 18, and the left side of the closing cover 20 is located inside the sealing groove.

[0050] The sealing groove is used to improve the sealing effect of the closing cover 20 on the top groove 18 to prevent rain and snow from entering the powder bin.

[0051] Specifically, a groove 25 is formed on the left side of the closing cover 20 , and a sealing ring 26 is disposed inside the groove 25 , and the sealing ring 26 contacts the sealing groove.

[0052] The sealing ring 26 is used to increase the sealing performance between the closing cover 20 and the sealing groove, thereby preventing rain and snow from entering the powder bin through the gap, thereby improving the sealing performance inside the powder bin.

[0053] Specifically, a support rod 27 is fixedly installed on the top of the powder bin top cover 1, and a rain shield 28 is fixedly installed on the top of the support rod 27. The rain shield 28 is located above the mounting frame 3. A limiting through groove 29 is provided inside the rain shield 28. A protective cover 31 is slidably connected inside the limiting through groove 29. A second cylinder 30 is fixedly installed on the top of the rain shield 28, and the output end of the second cylinder 30 is fixedly connected to the top of the inner cavity of the protective cover 31.

[0054] The second cylinder 30 is used to drive the protective cover 31 to move up and down. When the protective cover 31 moves down, the second cylinder 30 will block rain and snow at the top groove 18 to prevent rain and snow from gathering at the top groove 18. Under the action of the limiting groove 29, the protective cover 31 is limited to improve the stability of the protective cover 31 when moving up and down.

[0055] Specifically, an observation window 32 is provided on the left side of the protective cover 31 , and the observation window 32 is located on the left side of the top groove 18 .

[0056] The observation window 32 is convenient for the operator to check the situation at the top groove 18. In heavy snow and rain, rain and snow will inevitably gather at the top groove 18. It is convenient for the operator to clean the gathered rain and snow before opening the closing cover 20 to prevent rain and snow from entering the powder bin when the top groove 18 is opened.

[0057] During use, when the powder pulling vehicle reaches the designated location, the second motor 21 is first started through the control box, and the screw 22 is driven to rotate under the action of the second motor 21, and then the screw 22 drives the closing cover 20 to move right, so that the closing cover 20 is stored in the interior of the storage groove 19, and then the closing cover 20 opens the top groove 18, and when the stopper 24 is engaged with the right side of the top groove 18, the closing cover 20 stops moving, and the second motor 21 is turned off, and then the first cylinder 4 is started through the control box, and the first cylinder 4 drives the fixed plate 6 and the driving plate 9 to move downward, so that the fixed plate 6 and the driving plate 9 enter the interior of the powder bin, and the first cylinder 4 is turned off. The machine 8 drives the driving disk 9 to rotate, and then the driving disk 9 drives the limiting rod 12 to expand outward, so that the limiting rod 12 moves inside the movable groove 7, and then the sampling bottle 17 is expanded and used, and the first cylinder 4 is started again, so that the first cylinder 4 moves downward, and then drives the sampling bottle 17 to move downward, so that the limestone powder enters the interior of the sampling bottle 17, and the sampling bottle 17 samples the limestone powder at different positions. After the sampling is completed, the fixed disk 6 and the driving disk 9 are driven upward by the first cylinder 4, and then the sampling bottle 17 is driven to move upward and out of the powder bin, and then the sampling bottle 17 is removed by the operator to test the limestone powder to ensure the quality of the limestone powder.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic sampling device for limestone powder in a coal-fired power plant, comprising a powder bin top cover (1), characterized in that: The top of the powder bin top cover (1) is provided with a mounting frame (2), the top of the mounting frame (2) is fixedly mounted with a mounting frame (3), the top of the mounting frame (3) is fixedly mounted with a first cylinder (4), the output end of the first cylinder (4) is fixedly mounted with a connecting frame (5), the bottom of the connecting frame (5) is fixedly mounted with a fixing plate (6), the top of the fixing plate (6) is provided with evenly distributed moving grooves (7), the top of the fixing plate (6) is fixedly mounted with a first motor (8) on the inner side of the connecting frame (5), the output end of the first motor (8) passes through the fixing plate (6) and is fixedly mounted with a driving plate (9), the driving plate (9) is located Below the fixed disk (6), the top of the driving disk (9) is provided with evenly distributed driving grooves (10), the inner part of the movable groove (7) is slidably connected with a limit rod (12), the bottom of the limit rod (12) passes through the driving groove (10), the bottom of the driving groove (10) is fixedly installed with a rotating block (13), the bottom of the rotating block (13) is rotatably connected with a frame (14), the inner side of the frame (14) is fixedly installed with an internal threaded ring (15), a sampling bottle (17) is arranged below the rotating block (13), the top of the powder bin top cover (1) is provided with a top groove (18), and the inside of the top groove (18) is provided with a closing cover (20).

2. The automatic sampling device for limestone powder in a coal-fired power plant according to claim 1, characterized in that: Mounting bolts are provided on both sides of the top of the mounting frame (2), and the mounting frame (2) is fixedly connected to the powder bin top cover (1) via the mounting bolts.

3. The automatic sampling device for limestone powder in a coal-fired power plant according to claim 1 is characterized in that: A limiting groove is provided at the bottom of the fixed disk (6), and a limiting block (11) is fixedly installed at the top of the driving disk (9), wherein the limiting block (11) is located inside the limiting groove.

4. The automatic sampling device for limestone powder in a coal-fired power plant according to claim 1 is characterized in that: An external threaded ring (16) is fixedly mounted on the top of the sampling bottle (17), and the external threaded ring (16) is located inside the internal threaded ring (15) and is threadedly connected to the internal threaded ring (15).

5. The automatic sampling device for limestone powder in a coal-fired power plant according to claim 1 is characterized in that: A storage groove (19) is provided inside the powder bin top cover (1) and on the right side of the top groove (18); the right side of the closing cover (20) is located inside the storage groove (19); a second motor (21) is fixedly installed on the right side of the inner cavity of the storage groove (19); a screw rod (22) is fixedly installed at the output end of the second motor (21); a threaded hole (23) is provided inside the closing cover (20); the left side of the screw rod (22) extends to the inside of the threaded hole (23) and is threadedly connected to the threaded hole (23).

6. The automatic sampling device for limestone powder in a coal-fired power plant according to claim 1, characterized in that: A stopper (24) is fixedly mounted on the top of the closing cover (20), and the stopper (24) is clamped on the left side of the inner cavity of the top groove (18).

7. The automatic sampling device for limestone powder in a coal-fired power plant according to claim 1 is characterized in that: A sealing groove is provided on the left side of the top groove (18), and the left side of the closing cover (20) is located inside the sealing groove.

8. The automatic sampling device for limestone powder in a coal-fired power plant according to claim 1, characterized in that: A groove (25) is provided on the left side of the closing cover (20), a sealing ring (26) is provided inside the groove (25), and the sealing ring (26) is in contact with the sealing groove.

9. The automatic sampling device for limestone powder in a coal-fired power plant according to claim 1, characterized in that: A support rod (27) is fixedly mounted on the top of the powder bin top cover (1), a rain shield (28) is fixedly mounted on the top of the support rod (27), the rain shield (28) is located above the mounting frame (3), a limiting through groove (29) is provided inside the rain shield (28), a protective cover (31) is slidably connected inside the limiting through groove (29), a second cylinder (30) is fixedly mounted on the top of the rain shield (28), and an output end of the second cylinder (30) is fixedly connected to the top of the inner cavity of the protective cover (31).

10. The automatic sampling device for limestone powder in a coal-fired power plant according to claim 9, characterized in that: An observation window (32) is provided on the left side of the protective cover (31), and the observation window (32) is located on the left side of the top groove (18).

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