Sampling device for raw material sample for cement production

Abstract

The utility model relates to the technical field of cement production, in particular to a sampling device for raw material samples for cement production, which comprises a support, a sample bin, a stirring mechanism and a sample division mechanism, the sample bin is arranged on the support, the stirring mechanism is arranged on the sample bin and used for stirring samples in the sample bin, and the sample division mechanism is arranged on the support. A first sample outlet is formed in the sample bin, the sample division mechanism is communicated with the first sample outlet, and a switch valve is arranged at the first sample outlet. The sampling device disclosed by the utility model is simple in structure, mixing and division sampling are completed at one time, the sampling efficiency is improved, samples are uniformly mixed through the stirring mechanism, the uniformity of the samples is improved, and the labor intensity of workers is reduced; the two-stage division proportion adjustment is realized through the switch valve and the sample division mechanism, so that the sampling precision is improved, and the large-scale use is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of cement production, in particular to a sampling device for raw material samples used in cement production. Background Art

[0002] During cement production, it is necessary to sample and test the raw materials for cement production. The sampling of raw material samples mainly includes two steps. First, various raw materials are mixed evenly, and then the evenly mixed samples are subjected to quartering sampling. At present, the sampling of raw material samples for cement production usually piles the crushed samples on the operation platform first, and then uses the coning method to mix the samples evenly and take samples manually at multiple points by spreading. This sampling method has low raw material mixing efficiency and manual quartering sampling efficiency, affecting the sampling efficiency. Content of the Utility Model

[0003] The technical problem solved by the utility model is to provide a sampling device for raw material samples used in cement production with relatively high sampling efficiency.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a sampling device for raw material samples used in cement production, including a bracket, a sample bin, a stirring mechanism and a sample quartering mechanism. The sample bin is arranged on the bracket, the stirring mechanism is arranged on the sample bin, the stirring mechanism is used to stir the samples in the sample bin, a first sample outlet is arranged on the sample bin, the sample quartering mechanism is communicated with the first sample outlet, and a switching valve is arranged at the first sample outlet.

[0005] Further, the stirring mechanism includes a motor, a stirring rotating shaft and at least one stirring blade. The motor is connected and arranged below the sample bin, the output shaft of the motor passes through the bottom of the sample bin and is rotationally connected with the stirring rotating shaft. The stirring rotating shaft is arranged vertically, and the stirring blade is arranged on the circumference of the stirring rotating shaft.

[0006] Further, the stirring mechanism includes three stirring blades, and the three stirring blades are evenly distributed on the circumference of the stirring rotating shaft. The three stirring blades are respectively a first stirring blade, a second stirring blade and a third stirring blade;

[0007] A material passing notch is arranged in the middle of the bottom of the first stirring blade, and the distance between the bottom of the first stirring blade and the bottom of the sample bin is 25-30 mm;

[0008] The distance between the bottom of the second stirring blade and the bottom of the sample bin is 20-25 mm;

[0009] The distance between the bottom of the third stirring blade and the bottom of the sample bin is 0-3 mm.

[0010] Furthermore, the angle between the stirring blade and the vertical central axis of the stirring rotating shaft can be adjusted;

[0011] The stirring blade is connected to the stirring rotating shaft through a blade connecting plate. The blade connecting plate is connected to the stirring blade through a first connecting bolt. The upper half of the blade connecting plate is provided with a first connecting hole, and the lower half of the blade connecting plate is provided with a second connecting hole. The stirring rotating shaft is provided with a third connecting hole and an arc-shaped strip hole. The second connecting bolt passes through the second connecting hole and the third connecting hole for fitting, and the third connecting bolt passes through the first connecting hole and the arc-shaped strip hole for fitting, so that the blade connecting plate is detachably arranged on the stirring rotating shaft.

[0012] Furthermore, a connecting frame body is arranged on the stirring rotating shaft, and further includes a scraping plate and a scraping frame. One end of the scraping frame is connected to the scraping plate, and one end of the scraping frame is connected to the connecting frame body.

[0013] Furthermore, the sample reduction mechanism includes a sample inlet pipe, a sample outlet pipe and a waste outlet pipe. The left half of the second sample outlet of the sample outlet pipe is communicated with the sample outlet pipe, the right half of the second sample outlet of the sample outlet pipe is communicated with the waste outlet pipe, and the sample inlet pipe is communicated with the first sample outlet.

[0014] Furthermore, it further includes a guide plate assembly. The guide plate assembly includes a guide plate, a guide rotating shaft and a damping adjustment mechanism. The guide rotating shaft is rotatably connected in the middle of the second sample outlet of the sample outlet pipe in the front-back direction. The guide plate is arranged on the guide rotating shaft. The damping adjustment mechanism is sleeved on the guide rotating shaft, and the damping adjustment mechanism can fix or rotate the guide rotating shaft.

[0015] Furthermore, a guide plate adjustment knob is arranged on the outer surface of the sample outlet pipe, and the guide plate adjustment knob is connected to one end of the guide rotating shaft.

[0016] Furthermore, it further includes an angle indicator. A pointer is arranged on the guide plate adjustment knob, and the pointer can slide along the angle indicator.

[0017] Furthermore, the switch valve is an electromagnetic valve, and it further includes a controller. The controller is electrically connected to the stirring mechanism and the switch valve;

[0018] A universal wheel assembly is arranged below the bracket.

[0019] The beneficial effects of the present utility model are as follows: The sampling device of the present utility model is used for sampling raw material samples in cement production, and includes a bracket, a sample bin, a stirring mechanism, and a sample reduction and division mechanism. The sample bin is arranged on the bracket, the stirring mechanism is arranged on the sample bin, a first sample outlet is arranged on the sample bin, the sample reduction and division mechanism is communicated with the first sample outlet, and a switch valve is arranged at the first sample outlet. When sampling the raw material samples for cement production, first put the crushed raw material samples into the sample bin, then control the stirring mechanism to work to stir the samples in the sample bin, and finally, after the samples are stirred evenly, control the opening of the switch valve to enable the evenly stirred samples to enter the sample reduction and division mechanism through the first sample outlet for reduction and division sampling, thereby completing the sampling work. It can be seen that the sampling device of the present utility model has a simple structure, and the mixing, reduction and division sampling are completed at one time, improving the sampling efficiency. Moreover, the samples are evenly mixed by the stirring mechanism, improving the uniformity of the samples and reducing the manual labor intensity; the secondary reduction and division ratio adjustment is jointly realized by the switch valve and the sample reduction and division mechanism, improving the sampling accuracy and being conducive to large-scale use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the sample reduction and division mechanism;

[0022] Figure 3 is an assembly schematic diagram of the stirring mechanism and the sample bin;

[0023] Figure 4 is a connection schematic diagram of the stirring rotating shaft and the blade connecting plate;

[0024] Marked as: bracket 1, sample bin 2, sample reduction and division mechanism 3, sample inlet pipe 31, sample outlet pipe 32, waste outlet pipe 33, guide plate 34, guide rotating shaft 35, damping adjustment mechanism 36, guide plate adjustment knob 37, angle indicator 38, motor 41, stirring rotating shaft 42, first stirring blade 43, second stirring blade 44, third stirring blade 45, blade connecting plate 46, scraping plate 47, scraping frame 48, connecting frame body 49, switch valve 5, controller 6, universal wheel assembly 7. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0026] As Figure 1 , Figure 2 and Figure 3As shown in the figure, the utility model relates to a sampling device for raw material samples used in cement production, which includes a support 1, a sample bin 2, a stirring mechanism, and a sample reduction mechanism 3. The sample bin 2 is arranged on the support 1, the stirring mechanism is arranged on the sample bin 2, and the stirring mechanism is used to stir the samples in the sample bin 2. A first sample outlet is arranged on the sample bin 2, the sample reduction mechanism 3 is communicated with the first sample outlet, and a switching valve 5 is arranged at the first sample outlet.

[0027] When sampling the raw material samples for cement production, first put the crushed raw material samples into the sample bin 2, then control the stirring mechanism to work to stir the samples in the sample bin 2, and finally, after the samples are stirred evenly, control to open the switching valve 5 so that the evenly stirred samples enter the sample reduction mechanism 3 through the first sample outlet for reduction sampling, thus completing the sampling work.

[0028] Specifically, in order to ensure the use effect of the sample bin 2, the structure of the sample bin 2 is preferably cylindrical in the upper part and frustum-shaped with a larger upper part and a smaller lower part. In order to reduce the possibility of dust flying during stirring, a bin cover can also be arranged at the top of the sample bin 2, and the bin cover is detachably arranged on the sample bin 2 through a locking mechanism.

[0029] The stirring mechanism stirs the samples to make the samples mix evenly. A preferred structure of the stirring mechanism of the utility model is: for example Figure 1 、 Figure 3 As shown in the figure, the stirring mechanism includes a motor 41, a stirring rotating shaft 42, and at least one stirring blade. The motor 41 is connected and arranged below the sample bin 2, the output shaft of the motor 41 passes through the bottom of the sample bin 2 and is rotationally connected to the stirring rotating shaft 42. The stirring rotating shaft 42 is arranged vertically, and the stirring blades are arranged on the circumference of the stirring rotating shaft 42. The working principle of this stirring mechanism is: when the motor 41 works, its output shaft rotates, the output shaft rotation drives the stirring rotating shaft 42 to rotate, and the stirring rotating shaft 42 rotation drives the stirring blades to rotate around the stirring rotating shaft 42 to stir the samples and make the samples mix evenly. Since the output shaft of the motor 41 needs to pass through the bottom of the sample bin 2, in order to ensure that the output shaft of the motor 41 can rotate normally, a bearing is arranged between the output shaft of the motor 41 and the bottom of the sample bin 2.

[0030] In order to further improve the use effect of the stirring mechanism, for example Figure 3As shown in the figure, the stirring mechanism includes three stirring blades, which are evenly distributed in the circumferential direction of the stirring rotating shaft 42. The three stirring blades are the first stirring blade 43, the second stirring blade 44, and the third stirring blade 45 respectively. A feeding notch is provided in the middle of the bottom of the first stirring blade 43, and the distance between the bottom of the first stirring blade 43 and the bottom of the sample bin 2 is 25 - 30 mm. The distance between the bottom of the second stirring blade 44 and the bottom of the sample bin 2 is 20 - 25 mm. The distance between the bottom of the third stirring blade 45 and the bottom of the sample bin 2 is 0 - 3 mm. During stirring, the sample passes through the feeding notch of the first stirring blade 43. Since the second stirring blade 44 has no notch, it can scrape the surface sample of the remaining sample after the first stirring blade 43. The third stirring blade 45 has the smallest contact inclination angle with the bottom of the sample bin 2, which can scrape away all the remaining samples. And when the accumulated amount of the sample is greater than the space between the second stirring blade 44 and the third stirring blade 45, the sample overflows from above the third stirring blade 45 to the area between the third stirring blade 45 and the first stirring blade 43. This structural design enables each stirring blade to stir the samples in different material layers and has the effect of making the samples tumble, improving the homogenization effect of the samples.

[0031] In order to further improve the use effect of the stirring blades, as Figure 3 , Figure 4 shown, the angle between the stirring blade and the vertical central axis of the stirring rotating shaft 42 can be adjusted. The stirring blade is connected to the stirring rotating shaft 42 through a blade connecting plate 46. The blade connecting plate 46 is connected to the stirring blade through a first connecting bolt. The upper half of the blade connecting plate 46 is provided with a first connecting hole, and the lower half of the blade connecting plate 46 is provided with a second connecting hole. The stirring rotating shaft 42 is provided with a third connecting hole and an arc-shaped strip hole. The second connecting bolt passes through the second connecting hole and the third connecting hole for fitting. The third connecting bolt passes through the first connecting hole and the arc-shaped strip hole for fitting, detachably setting the blade connecting plate 46 on the stirring rotating shaft 42, so that the angle between the stirring blade and the vertical central axis of the stirring rotating shaft 42 can be adjusted within the range of 30° to 75°. In order to increase the service life, the stirring blades are all made of flexible wear-resistant polymer materials, and the blade connecting plate 46 is made of metal materials.

[0032] In order to be applicable to sample materials with different particle sizes, the distance between the stirring rotating shaft 42 and the bottom of the sample bin 2 can be adjusted, so that the height of the stirring blades can be further adjusted.

[0033] In order to enable the sample to smoothly go out from the first sample outlet and enter the sample reduction mechanism 3, as Figure 3 shown, a connecting frame body 49 is provided on the stirring rotating shaft 42, and it also includes a scraping plate 47 and a scraping frame 48. One end of the scraping frame 48 is connected to the scraping plate 47, and one end of the scraping frame 48 is connected to the connecting frame body 49.

[0034] The switching valve 5 and the sample reduction mechanism 3 jointly achieve secondary reduction. The switching valve 5 is preferably an electromagnetic valve, such as an electromagnetic gate valve, and the discharge amount and discharge speed of the sample are adjusted by controlling the opening degree of the electromagnetic valve. A preferred structure of the sample reduction mechanism 3 is as follows. For another example Figure 2 As shown, the sample reduction mechanism 3 includes a sample feed pipe 31, a sample discharge pipe 32, and a waste discharge pipe 33. The left half of the second sample outlet of the sample discharge pipe 32 is communicated with the sample discharge pipe 32, the right half of the second sample outlet of the sample discharge pipe 32 is communicated with the waste discharge pipe 33, and the sample feed pipe 31 is communicated with the first sample outlet. After the sample enters the sample feed pipe 31, part of the sample enters the sample discharge pipe 32 to become a sample, and part of the sample enters the waste discharge pipe 33 to become waste. In order to better adjust the secondary reduction ratio and improve the sampling accuracy, the utility model further provides a guide plate assembly. The guide plate assembly includes a guide plate 34, a guide shaft 35, and a damping adjustment mechanism 36. The guide shaft 35 is rotatably connected in the middle of the second sample outlet of the sample discharge pipe 32 in the front-rear direction. The guide plate 34 is arranged on the guide shaft 35, and the damping adjustment mechanism 36 is sleeved on the guide shaft 35, and the damping adjustment mechanism 36 can fix or rotate the guide shaft 35. When the damping adjustment mechanism 36 works, the damping adjustment mechanism 36 can fix the guide shaft 35 so that the guide shaft 35 cannot rotate. When the damping adjustment mechanism 36 does not work, the damping adjustment mechanism 36 loses the restriction on the guide shaft 35, and the guide shaft 35 can rotate. Therefore, the damping adjustment mechanism 36 can fix the guide plate 34 at any position. The working principle of the sample reduction mechanism 3 is as follows: by rotating the guide shaft 35, the guide shaft 35 drives the guide plate 34 to rotate. After the guide plate 34 rotates to the position, it is fixed by the damping adjustment mechanism 36. The guide plate 34 guides the sample, thereby controlling the proportion of the sample entering the sample discharge pipe 32.

[0035] In order to make it more convenient to rotate the guide shaft 35, a guide plate adjustment knob 37 is arranged on the outer surface of the sample discharge pipe 32. The guide plate adjustment knob 37 is connected to one end of the guide shaft 35. And an angle indicator 38 is also provided. A pointer is arranged on the guide plate adjustment knob 37, and the pointer can slide along the angle indicator 38. By rotating the guide plate adjustment knob 37, the rotation of the guide shaft 35 is realized, and the rotation angle of the guide plate 34 is known through the position of the pointer on the angle indicator 38, which is convenient for the operator to use.

[0036] In order to improve the automation level, for another example Figure 1As shown in the figure, the utility model is further provided with a controller 6, and the controller 6 is electrically connected to the stirring mechanism and the switching valve 5. Whether the stirring mechanism and the switching valve 5 work is automatically controlled by the controller 6, and the stirring time of the stirring mechanism and the opening degree of the switching valve 5 are also controlled by the controller 6.

[0037] In order to facilitate the overall movement of the sampling device, a universal wheel assembly 7 is provided below the bracket 1, and a braking structure is provided at the universal wheel assembly 7.

[0038] In summary, the sampling device of the utility model has a simple structure, can complete mixing, reduction and sampling at one time, improves the sampling efficiency, and mixes the samples evenly through the stirring mechanism, improves the uniformity of the samples, and reduces the manual labor intensity; the secondary reduction ratio adjustment is realized jointly by the switching valve 5 and the sample reduction mechanism, improves the sampling accuracy, and is conducive to large-scale use.

Claims

1. Sampling device for raw material samples used in cement production, characterized in that: It includes a bracket (1), a sample bin (2), a stirring mechanism, and a sample reduction mechanism (3). The sample bin (2) is arranged on the bracket (1), the stirring mechanism is arranged on the sample bin (2), the stirring mechanism is used for stirring the sample in the sample bin (2), a first sample outlet is arranged on the sample bin (2), the sample reduction mechanism (3) is communicated with the first sample outlet, and a switching valve (5) is arranged at the first sample outlet.

2. The sampling device for raw material samples used in cement production according to claim 1, characterized in that: The stirring mechanism includes a motor (41), a stirring rotating shaft (42), and at least one stirring blade. The motor (41) is connected and arranged below the sample bin (2), the output shaft of the motor (41) passes through the bottom of the sample bin (2) and is rotationally connected with the stirring rotating shaft (42). The stirring rotating shaft (42) is arranged vertically, and the stirring blade is arranged on the circumference of the stirring rotating shaft (42).

3. The sampling device for raw material samples used in cement production according to claim 2, wherein: The stirring mechanism includes three stirring blades, and the three stirring blades are evenly distributed on the circumference of the stirring rotating shaft (42). The three stirring blades are respectively a first stirring blade (43), a second stirring blade (44), and a third stirring blade (45); A material passing notch is arranged in the middle of the bottom of the first stirring blade (43), and the distance between the bottom of the first stirring blade (43) and the bottom of the sample bin (2) is 25 - 30 mm; The distance between the bottom of the second stirring blade (44) and the bottom of the sample bin (2) is 20 - 25 mm; The distance between the bottom of the third stirring blade (45) and the bottom of the sample bin (2) is 0 - 3 mm.

4. The sampling device for raw material samples used in cement production according to claim 2, characterized in that: The angle between the stirring blade and the vertical central axis of the stirring rotating shaft (42) can be adjusted; The stirring blade is connected with the stirring rotating shaft (42) through a blade connecting plate (46). The blade connecting plate (46) is connected with the stirring blade through a first connecting bolt. The upper half of the blade connecting plate (46) is provided with a first connecting hole, the lower half of the blade connecting plate (46) is provided with a second connecting hole. The stirring rotating shaft (42) is provided with a third connecting hole and an arc-shaped strip hole. The second connecting bolt passes through the second connecting hole and the third connecting hole for adaptive setting, and the third connecting bolt passes through the first connecting hole and the arc-shaped strip hole for adaptive setting, so that the blade connecting plate (46) is detachably arranged on the stirring rotating shaft (42).

5. The sampling device for raw material samples used in cement production according to claim 2, characterized in that: A connecting frame body (49) is arranged on the stirring rotating shaft (42). It also includes a scraping plate (47) and a scraping frame (48). One end of the scraping frame (48) is connected with the scraping plate (47), and one end of the scraping frame (48) is connected with the connecting frame body (49).

6. The sampling device for raw material samples used in cement production according to claim 1, wherein: The sample reduction mechanism (3) includes a sample inlet pipe (31), a sample outlet pipe (32), and a waste outlet pipe (33). The left half of the second sample outlet of the sample outlet pipe (32) is communicated with the sample outlet pipe (32), the right half of the second sample outlet of the sample outlet pipe (32) is communicated with the waste outlet pipe (33), and the sample inlet pipe (31) is communicated with the first sample outlet.

7. The sampling device for raw material samples used in cement production according to claim 6, wherein: It further includes a material guiding plate assembly, which includes a material guiding plate (34), a material guiding rotating shaft (35) and a damping adjusting mechanism (36). The material guiding rotating shaft (35) is rotatably connected in the middle of the second sample outlet of the sample discharging pipe (32) in the front-back direction. The material guiding plate (34) is arranged on the material guiding rotating shaft (35). The damping adjusting mechanism (36) is sleeved on the material guiding rotating shaft (35), and the damping adjusting mechanism (36) can fix or rotate the material guiding rotating shaft (35).

8. The sampling device for raw material samples used in cement production according to claim 7, characterized in that: A material guiding plate adjusting knob (37) is arranged on the outer surface of the sample discharging pipe (32), and the material guiding plate adjusting knob (37) is connected to one end of the material guiding rotating shaft (35).

9. The sampling device for raw material samples used in cement production according to claim 8, characterized in that: It further includes an angle indicating meter (38). A pointer is arranged on the material guiding plate adjusting knob (37), and the pointer can slide along the angle indicating meter (38).

10. The sampling device for raw material samples used in cement production according to any one of claims 1 to 9, characterized in that: The switching valve (5) is an electromagnetic valve. It further includes a controller (6), and the controller (6) is electrically connected to the stirring mechanism and the switching valve (5); A universal wheel assembly (7) is arranged below the bracket (1).

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