Off-line ash content measuring instrument
By designing limit and position adjustment mechanisms in natural ray ash measuring instrument, and using weighing sensor feedback to ensure that coal samples are measured in the same posture, the problem of large reproducibility error in ash measurement of coal samples in the prior art is solved, and the problem of large error in ash measurement is achieved. More reliable and efficient measurement results.
Patent Information
- Application Number
- CN202420416044.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-05
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-05
AI Technical Summary
The existing natural ray ash measuring instrument has a large reproducibility error when measuring the ash content of coal samples. It is mainly due to the insufficient uniformity of the coal seam in the coal storage bucket and the lack of effective limit and position feedback mechanisms, resulting in differences in measurement data. .
An offline ash measuring instrument was designed, using a structure including a measuring box, a detector, a slide rail, a slide rod, a coal bucket pallet, a weighing sensor group and an electric push rod. The coal bucket is realized through the slide rail and a electric push rod. and adjust the limit and position of the load cell to feedback whether to place it in the preset position to ensure that the coal sample is measured in the same posture.
It effectively improves the reproducibility of coal sample measurement data, ensures the reliability and consistency of measurement results, simplifies the operation process, improves work efficiency, and reduces the interference of natural rays to measurements.
Smart Images
Figure CN222166914U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of ash content measuring equipment, and in particular to an off-line ash content measuring instrument. Background Art
[0002] The use of gamma-ray measurement technology can achieve rapid determination of coal ash content. Compared with traditional testing methods, its biggest advantage is strong real-time performance, which solves the problems of traditional mining, processing, and chemical lag and long time, and reduces the labor intensity of workers. Gamma-ray coal ash content measuring instruments include the following four forms: single-source gamma-ray ash measuring instrument, dual-source gamma-ray ash measuring instrument, natural ray ash measuring instrument and activated neutron ash measuring instrument.
[0003] The natural ray ash meter uses potassium, uranium, thorium and other elements in coal to produce a certain amount of radioactivity to measure the ash content of coal. The natural ray ash meter has been widely used in actual production. In order to obtain better measurement data, the coal sample to be measured is pre-treated. The specific pre-treatment method of the coal sample can refer to the description in GB / T212-2008 "Industrial Analysis Method of Coal". First, the coal sample is crushed to a particle size of less than 0.02mm, and then a certain weight of the crushed coal sample is weighed and placed in a drying oven. A nitrogen flow or air flow is passed at a temperature of 105°C to 110°C to dry the crushed coal sample to a constant weight, and then the natural ray ash meter is used for measurement.
[0004] However, in actual applications, the ash content of coal samples measured using a natural ray ash meter also has large reproducibility errors. After repeated experiments to find the cause, it was found that under the condition of shielding external natural rays, the data fed back by the detector used to detect natural rays in coal is more or less affected by the coal seam directly above the detector. This is mainly due to operational reasons, which are caused by insufficient uniformity of the coal seam in the coal storage hopper containing the coal sample or differences in the placement of the coal storage hopper. The insufficient uniformity of the coal seam in the coal storage hopper and the uneven height of the coal seam can be solved by fully stirring the coal sample in the coal storage hopper and then using scrapers and other items to sort out the top surface of the coal seam in the coal storage hopper so that the top surface of the coal seam in the coal storage hopper is at the same height. However, there is a lack of indication in the prior art as to whether the coal storage hopper is placed in the preset position so that the coal samples measured multiple times are always in the same posture, which leads to differences in the measurement data of a single coal sample. There are still defects in the prior art in terms of improving the reproducibility of the measurement data of a single coal sample, and there is room for improvement. Summary of the invention
[0005] In view of the deficiencies in the prior art, the utility model provides an off-line ash content measuring instrument which can limit the position of a coal storage hopper and can provide feedback on whether the coal storage hopper is placed at a preset position, so as to overcome the defects in the prior art.
[0006] The technical solution adopted by the utility model is: an offline ash content measuring instrument, including a measuring box, the measuring box including a box body and a box door, the box body is provided with a detector and two mutually parallel first slide rails, each first slide rail is correspondingly provided with a slide bar which can slide along the corresponding first slide rail, a coal hopper support plate is provided above the two slide bars, a weighing sensor group is provided between each slide bar and the coal hopper support plate, each weighing sensor group includes two weighing sensors, the number of the weighing sensor groups is two, the weighing ends of the four weighing sensors are distributed on the four corners of the coal hopper support plate, a coal storage hopper is provided on the coal hopper support plate, the coal storage hopper includes an annular coal hopper side wall and a coal hopper bottom plate provided in the inner cavity of the coal hopper side wall, and the coal hopper support plate is located in the inner cavity of the coal hopper side wall below the coal hopper bottom plate.
[0007] Preferably, the box body is provided with two second slide rails parallel to each other, the second slide rails are perpendicular to the first slide rails, the two second slide rails are respectively located on both sides of the box door, each second slide rail is provided with a slider, the slider adopts a block structure that can slide along the corresponding second slide rail, the number of sliders is several, and the several sliders are connected to the box door.
[0008] Preferably, a first electric push rod is provided on one of the sliders and the box body.
[0009] Preferably, the box body adopts a box-like structure with an opening on one side, and the box door adopts a plate-like structure. The box body includes a first mounting plate and a second mounting plate. The number of the second mounting plates is four, and the four second mounting plates are sequentially connected end to end to form a square tube structure. The first mounting plate is located on one end of the square tube structure, and the box door is located on the other end of the square tube structure. The first mounting plate, the second mounting plate and the box door all include a first stainless steel plate layer, a lead plate layer and a second stainless steel plate layer, which are sequentially distributed from the inside to the outside, and the first stainless steel plate layer, the lead plate layer and the second stainless steel plate layer are penetrated by a first fixing bolt.
[0010] Preferably, a support plate is correspondingly arranged between each weighing sensor group and the corresponding sliding rod, a second electric push rod is arranged on the box body, and an output end of the second electric push rod is connected to one of the support plates.
[0011] Preferably, a group of handles parallel to each other are provided on the top of the inner cavity of the side wall of the coal hopper.
[0012] Preferably, a frame is provided on the box body, and universal wheels are provided at the bottom of the frame.
[0013] The beneficial effects of the utility model are as follows: firstly, the utility model utilizes the limit adjustment formed by the inner cavity of the coal hopper side wall below the coal hopper bottom plate and the coal hopper support plate, so as to facilitate the corresponding limit adjustment of the position of the coal storage hopper that needs to be moved during measurement; and the product has corresponding weighing sensors distributed on the four corners of the coal hopper support plate, and the weight parameters fed back by the four weighing sensors are used to facilitate the feedback of whether the coal storage hopper is placed in the preset position.
[0014] Secondly, the coal hopper bottom plate and coal hopper support plate described in the utility model are both plate structures made of polycarbonate material, polyvinyl chloride material, nylon material, polyetheretherketone material, polyurethane material or metal aluminum material; because the above-mentioned polycarbonate material, polyvinyl chloride material, nylon material, polyetheretherketone material, polyurethane material or metal aluminum material absorbs less natural rays, it is convenient for the natural rays released in the coal sample to pass through the coal hopper bottom plate and the coal hopper support plate and be received by the detector.
[0015] Finally, a group of mutually parallel handles are arranged on the top of the inner cavity of the side wall of the coal hopper of the utility model; installing the handles facilitates the movement of the coal storage hopper.
[0016] The utility model has the advantages of simple structure, convenient operation, ingenious design, greatly improved working efficiency, good social and economic benefits, and is a product that is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is the front view of the utility model.
[0018] Figure 2 for Figure 1 A partial enlarged schematic diagram of detail A.
[0019] Figure 3 for Figure 1 A partial enlarged schematic diagram of detail B.
[0020] Figure 4 It is a three-dimensional diagram of the utility model.
[0021] Figure 5 It is the right view of the utility model.
[0022] Figure 6 It is a structural schematic diagram of the measuring box of the utility model. DETAILED DESCRIPTION
[0023] like Figures 1 to 6As shown, an offline ash content measuring instrument includes a measuring box, the measuring box includes a box body 1 and a box door 2, the box body 1 is provided with a detector 3 and two mutually parallel first slide rails 4, the sensing end of the detector 3 is located in the box body 1, each first slide rail 4 is correspondingly provided with a slide bar 5 that can slide along the corresponding first slide rail 4, a coal hopper support plate 6 is provided above the two slide bars 5, the coal hopper support plate 6 is horizontally located above the detector 3, a weighing sensor group is provided between each slide bar 5 and the coal hopper support plate 6, each weighing sensor group includes two weighing sensors 7, the There are two weighing sensor groups, and the weighing ends of the four weighing sensors 7 are distributed on the four corners of the coal hopper support plate 6. A coal storage hopper is arranged on the coal hopper support plate 6, and the coal storage hopper includes an annular coal hopper side wall 8 and a coal hopper bottom plate 9 arranged in the inner cavity of the coal hopper side wall 8. The coal hopper support plate 6 is located in the inner cavity of the coal hopper side wall 8 below the coal hopper bottom plate 9. A positioning ring 20 is arranged on the outer side of the coal hopper support plate 6, and the positioning ring 20 is located below the coal hopper bottom plate 9. The positioning ring 20 is fixedly connected to the coal hopper side wall 8, and a third fixing bolt 21 is arranged on the positioning ring 20 and the coal hopper bottom plate 9.
[0024] The coal hopper bottom plate 9 and the coal hopper support plate 6 are both plate-shaped structures made of non-metallic materials or metal aluminum materials. Preferably, the non-metallic material includes one of polycarbonate, polyvinyl chloride, nylon, polyetheretherketone or polyurethane. Since the polycarbonate, polyvinyl chloride, nylon, polyetheretherketone or polyurethane absorbs less natural radiation, it is convenient for the natural radiation released in the coal sample to pass through the coal hopper bottom plate 9 and the coal hopper support plate 6 and be received by the detector 3. The box body 1 is provided with two mutually parallel second slide rails 10, the second slide rails 10 are perpendicular to the first slide rail 4, and the two second slide rails 10 are respectively located on both sides of the box door 2. Each second slide rail 10 is provided with a slider 11, and the slider 11 adopts a block structure that can slide along the corresponding second slide rail 10. The number of sliders 11 is several, and the several sliders 11 are connected to the box door 2. One of the sliders 11 and the box body 1 is provided with a first electric push rod 12.
[0025] The box body 1 adopts a box-like structure with one side open, and the box door 2 adopts a plate-like structure. The box body 1 includes a first mounting plate and a second mounting plate. The number of the second mounting plates is four, and the four second mounting plates are sequentially connected end to end to form a square tube structure. The first mounting plate is located at one end of the square tube structure, and the box door 2 is located at the other end of the square tube structure. The first mounting plate, the second mounting plate and the box door 2 all include a first stainless steel plate layer, a lead plate layer and a second stainless steel plate layer distributed sequentially from the inside to the outside. The first stainless steel plate layer, the lead plate layer and the second stainless steel plate layer are penetrated by a first fixing bolt 13. The first mounting plate and the second mounting plate are fixed by a second fixing bolt 19. The lead plate layer can more strongly shield the natural rays in the environment. The first stainless steel plate layer and the second stainless steel plate layer are used to clamp the lead plate layer to fix the position of the lead plate layer, thereby overcoming the technical problem that the lead plate layer is easy to deform due to its own high density and low hardness. Compared with the box body 1 and the box door 2 made of pure uniform steel material, the thickness is correspondingly reduced, taking into account the shielding effect of environmental rays and the convenience of manufacturing.
[0026] Furthermore, Figure 6 As shown, in order to enhance the shielding of natural rays in the environment, the lead plate layer of the first mounting plate, the lead plate layer of the box door 2, the second stainless steel plate layer of the first mounting plate and the second stainless steel plate of the box door 2 described in this product all adopt a square box structure with one side open, the first stainless steel plate layer of the first mounting plate, the first stainless steel plate layer of the second mounting plate, the lead plate layer of the second mounting plate, the second stainless steel plate layer of the second mounting plate and the second stainless steel plate layer of the box door 2 all adopt a plate structure, and the first stainless steel plate layer of the first mounting plate and the first stainless steel plate layer of the second mounting plate, as well as the second stainless steel plate layer of the first mounting plate and the second stainless steel plate layer of the second mounting plate are respectively installed with second fixing bolts 19, and the second stainless steel outer side of the box door 2 forms a square box structure enclosed by the lead plate layer of the box door 2, the lead plate layers of the four second mounting plates and the lead plate layer of the first mounting plate, thereby better shielding the natural rays in the environment and reducing the interference of natural rays on the measurement of the ash content of coal samples.
[0027] A support plate 14 is correspondingly arranged between each of the weighing sensor groups and the corresponding slide rod 5. The support plate 14 is installed in a horizontal state in whole or in part under the corresponding weighing sensor group, thereby improving the supporting stability of the slide rod 5 on the coal hopper support plate 6 after the coal storage hopper is installed on the coal hopper support plate 6; a second electric push rod 15 is arranged on the box body 1, and the output end of the second electric push rod 15 is connected to one of the support plates 14.
[0028] A group of mutually parallel handles 16 are provided at the inner cavity top of the coal hopper side wall 8. The handles 16 are installed to facilitate the movement of the coal storage hopper.
[0029] The box body 1 is provided with a frame 17, and a universal wheel 18 is provided at the bottom of the frame 17. Thus, the universal wheel 18 is convenient for moving the product.
[0030] The use of this product is as follows: Figures 1 to 6 As shown, the following steps are included:
[0031] First, the coal sample that has been crushed and dried is mixed and then reduced. After reduction, a preset amount of coal sample is taken out and placed in the coal storage hopper to a preset weight range. Then, the top surface of the coal sample in the coal storage hopper is arranged by a scraper so that the top surface of the coal sample in the coal storage hopper is at the same height. Then, the coal storage hopper is placed on the coal hopper support plate 6. At this time, the coal hopper bottom plate 9 of the coal storage hopper and the coal hopper support plate 6 are in contact, and the positioning ring 20 is located outside the coal hopper support plate 6. The weight parameters fed back by the weighing sensors 7 installed on the four corners of the coal hopper support plate 6 tend to be consistent; if the coal storage hopper fails to be placed in the preset state, the weight parameters fed back by the weighing sensors 7 installed on the four corners of the coal hopper support plate 6 are quite different. According to the weighing sensors 7 installed on the four corners, the staff can be prompted whether the coal storage hopper is placed in the preset measurement position. Then, the second electric push rod 15 drives the corresponding support plate 14 to move toward the inner cavity of the box body 1, thereby driving the coal storage hopper to move toward the inner cavity of the box body 1 under the limiting conditions formed by the two mutually parallel first slide rails 4 and the slide rods 5 installed corresponding to each first slide rail 4 until the coal storage hopper is completely located in the preset position in the inner cavity of the box body 1. Then, the first electric push rod 12 drives the corresponding slider 11 to move, thereby driving the box door 2 to move until the box door 2 closes the box body 1. Finally, the detector 3 feeds back the rays released by the coal sample in the coal storage hopper and combines the average value of the weight parameters fed back by the four weighing sensors 7 to calculate the ash content of the coal sample in the coal storage hopper. Thus, the ash content of the coal sample is measured.
[0032] After the ash content of the coal sample is measured, the first electric push rod 12 and the second electric push rod 15 are driven in reverse order until the coal storage hopper extends to a preset position outside the box body 1. The staff lifts the handle 16 to open the coal storage hopper and empty the coal sample that has been measured, places the next coal sample to be measured in the coal storage hopper, and repeats the above steps to measure the ash content of the next coal sample.
[0033] Through this embodiment, the limit adjustment formed by the inner cavity of the coal hopper side wall 8 below the coal hopper bottom plate 9 and the coal hopper support plate 6 is utilized to facilitate the corresponding limit of the position of the coal storage hopper that needs to be moved during measurement; and this product has weighing sensors 7 correspondingly distributed on the four corners of the coal hopper support plate 6, and the weight parameters fed back by the four weighing sensors 7 are utilized to facilitate feedback on whether the coal storage hopper is placed in the preset position.
[0034] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.
Claims
1. An off-line ash content measuring instrument, characterized in that: The measuring box comprises a measuring box, wherein the measuring box comprises a box body (1) and a box door (2), wherein the box body (1) is provided with a detector (3) and two mutually parallel first slide rails (4), wherein each first slide rail (4) is provided with a corresponding slide bar (5) capable of sliding along the corresponding first slide rail (4), wherein a coal hopper support plate (6) is provided above the two slide bars (5), wherein a weighing sensor group is provided between each slide bar (5) and the coal hopper support plate (6), wherein each weighing sensor group comprises two weighing sensors (7), wherein the weighing ends of the four weighing sensors (7) are distributed at the four corners of the coal hopper support plate (6), wherein a coal storage hopper is provided on the coal hopper support plate (6), wherein the coal storage hopper comprises an annular coal hopper side wall (8) and a coal hopper bottom plate (9) provided in the inner cavity of the coal hopper side wall (8), wherein the coal hopper support plate (6) is located in the inner cavity of the coal hopper side wall (8) below the coal hopper bottom plate (9).
2. The off-line ash content measuring instrument according to claim 1, characterized in that: The box body (1) is provided with two second slide rails (10) which are parallel to each other. The second slide rails (10) and the first slide rail (4) are perpendicular to each other. The two second slide rails (10) are respectively located on both sides of the box door (2). Each second slide rail (10) is provided with a slider (11). The slider (11) adopts a block structure which can slide along the corresponding second slide rail (10). The number of the sliders (11) is several, and the several sliders (11) are connected to the box door (2).
3. The off-line ash content measuring instrument according to claim 2, characterized in that: A first electric push rod (12) is provided on one of the sliders (11) and the box body (1).
4. The off-line ash content measuring instrument according to claim 1, characterized in that: The box body (1) adopts a box-like structure with one side open, and the box door (2) adopts a plate-like structure. The box body (1) includes a first mounting plate and a second mounting plate. The number of the second mounting plates is four. The four second mounting plates are connected end to end in sequence to form a square tube-like structure. The first mounting plate is located at one end of the square tube-like structure, and the box door (2) is located at the other end of the square tube-like structure. The first mounting plate, the second mounting plate and the box door (2) all include a first stainless steel plate layer, a lead plate layer and a second stainless steel plate layer, which are distributed in sequence from the inside to the outside. The first stainless steel plate layer, the lead plate layer and the second stainless steel plate layer are penetrated by a first fixing bolt (13).
5. The off-line ash content measuring instrument according to claim 1, characterized in that: A support plate (14) is correspondingly arranged between each of the weighing sensor groups and the corresponding sliding rod (5), a second electric push rod (15) is arranged on the box body (1), and an output end of the second electric push rod (15) is connected to one of the support plates (14).
6. The off-line ash content measuring instrument according to claim 1, characterized in that: A group of mutually parallel handles (16) are provided at the top of the inner cavity of the coal hopper side wall (8).
7. The off-line ash content measuring instrument according to claim 1, characterized in that: A frame (17) is arranged on the box body (1), and a universal wheel (18) is arranged at the bottom of the frame (17).