Weighing sample collector with high precision

Abstract

The utility model relates to a weighing sample collector with high precision, which belongs to the technical field of weighing sample collecting equipment and comprises a rack, a weighing material guide component communicated with the rack is arranged on the rack, and a blanking hopper inserted with the weighing material guide component is arranged between the weighing material guide component and the rack. The weighing material guiding assembly comprises a weighing material barrel, a weighing material barrel shell connected with the weighing material barrel in a sleeved mode is arranged on the periphery of the weighing material barrel, an overturning driving motor is arranged on the weighing material barrel shell, an overturning driving frame is arranged between the overturning driving motor and the weighing material barrel, and the overturning driving frame is connected with the weighing material barrel. And a weighing sensor is arranged between the front end of the turnover driving frame and the lower end of the weighing charging basket. The device has the characteristics of compact structure, good operation stability, high accuracy and convenience in operation. The problem that the weight error of materials in the sample collection bottle is large is solved. And the precision grade of the material weighing process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of weighing and sample collecting equipment, in particular to a weighing and sample collecting device with high precision. Background Art

[0002] The intelligent weighing and packaging coal sample collector is a key equipment in the coal industry in the sampling, sample preparation and laboratory analysis. It realizes the concept of full closed-loop management by adopting unmanned and information technology, improves the efficiency of coal processing and utilization, and ensures the fairness of coal trade. The fully automatic coal sampling and sample collection system has been widely used in various thermal power plants and large-scale coal-using enterprises such as coking and steel. Because it can automatically complete the sampling and collection of incoming materials from trains and cars, it avoids the interference of manual sampling on the objective reality of samples.

[0003] In the fully automatic coal sampling and collecting system, the coal sample collector is an important component. A sample barrel is placed on the coal sample collector. The sampler takes the coal sample and performs processes such as crushing and shrinking to obtain the final sample, which flows from the downflow pipe into the sample barrel. Due to the requirements of sampling and analysis, it is necessary to collect the weight data of the coal sample entering the sample barrel each time. This requires weighing the coal sample entering the sample barrel each time. The traditional weighing method is to set a weighing system under each sample barrel, and the sample barrel is set up and down on the weighing system. The weight of the coal sample entering the sample barrel is obtained through the weighing system under each sample barrel.

[0004] At present, some of the weighing structures of sample collectors on the market are to set several weighing sensors at the bottom of the entire sample collector. The entire sample collector equipment is weighed. The range of the selected sensor is very large compared with the material that needs to be measured at a single time, which will cause a large error in the single measurement of the material. Some weighing sensors are set at the bottom of each sample collecting bottle. Since the sample collector is generally multi-station, one device will need multiple weighing sensors, and generally the sample collecting bottles need to move. It is easy to cause sensor damage. The workload of inspection and maintenance is relatively large. And if the sample collecting bottle is subjected to external force, it will affect the accuracy of the weighing sensor. However, the sample collecting bottle needs to be fixed when collecting samples and changing stations. Therefore, the weighing results will also have a large error. Some also set a pallet at the bottom of the sample collecting inlet pipe and weigh on the pallet, but since the material is also in contact with the inlet pipe, the pipe wall will have a strong effect on the material, which also leads to errors in the weighing results. Summary of the invention

[0005] The utility model mainly solves the deficiencies in the prior art and provides a high-precision weighing sample collector, which has the characteristics of compact structure, good operation stability, high accuracy and convenient operation. It solves the problem of large weight error of materials in the sample collection bottle and improves the accuracy level of the material weighing process.

[0006] The above technical problems of the utility model are mainly solved by the following technical solutions:

[0007] A high-precision weighing sample collector comprises a frame, a weighing material guide assembly connected to the frame is arranged on the frame, and a drop hopper plugged with the weighing material guide assembly is arranged between the weighing material guide assembly and the frame. The weighing material guide assembly comprises a weighing material barrel, a weighing material barrel shell sleeved with the weighing material barrel is arranged on the outer periphery of the weighing material barrel, a flipping drive motor is arranged on the weighing material barrel shell, a flipping drive frame is arranged between the flipping drive motor and the weighing material barrel, and a weighing sensor is arranged between the front end of the flipping drive frame and the lower end of the weighing material barrel.

[0008] Preferably, a flipping detection switch is provided above the rear end of the flipping drive motor, a clearing detection switch is provided below the rear end of the flipping drive motor, and a barrel clearing stop block is provided between the flipping detection switch and the clearing detection switch.

[0009] Preferably, a position sensor III is provided below the flip drive motor, which is photoelectrically inductive with the flip drive frame. The position sensor III is used to determine whether the weighing barrel is in a weighing state or a pouring state.

[0010] Preferably, the upper end of the weighing barrel shell is provided with a constricted feed pipe connected to the weighing barrel in a plug-in manner, and the lower part of the weighing barrel shell is provided with a discharge pipe connected to the drop hopper.

[0011] Preferably, a sample collecting bottle rack slidably connected to the frame is provided in the frame, and a plurality of sample collecting bottles movably connected to the drop hopper are provided on the sample collecting bottle rack.

[0012] Preferably, a position sensor II is provided on the side of the drop hopper for photoelectric induction with the sample collecting bottle. The position sensor II is used to determine whether the sample collecting bottle is in place.

[0013] Preferably, the sample collecting bottle rack is provided with a rotating shaft which is integrally welded with the sample collecting bottle rack and is bearing-connected to the upper and lower ends of the frame. The side of the drop hopper is provided with a sample collector rotating motor which is bolted and fixed to the frame. A driving gear which is tooth-shaped and internally driven with the sample collector rotating motor is provided between the upper end of the rotating shaft and the sample collector rotating motor.

[0014] Preferably, the front end of the sample collector rotating motor is provided with a position sensor I, and an inductive transition block is provided between the position sensor I and the driving gear and is screwed and fixed to the upper end of the rotating shaft. The position sensor I is used to control the rotation angle of the sample collector rotating motor.

[0015] Preferably, the four corners of the lower end of the frame are provided with a sample collector chassis which is integrally welded and fixed to the frame.

[0016] The utility model can achieve the following effects:

[0017] The utility model provides a weighing sample collector with high precision, which has the characteristics of compact structure, good operation stability, high accuracy and convenient operation compared with the prior art. It solves the problem of large weight error of materials in the sample collection bottle and improves the accuracy level of the material weighing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural sectional view of the utility model.

[0019] Figure 2 It is a front view structural schematic diagram of the weighing and material guiding component in the utility model.

[0020] Figure 3 It is a side structural schematic diagram of the weighing and material guiding assembly in the utility model.

[0021] In the figure: weighing and guiding assembly 1, drop hopper 2, position sensor I 3, inductive transition block 4, sample collector rotating motor 5, drive gear 6, rotating shaft 7, frame 8, sample collecting bottle rack 9, sample collector chassis 10, sample collecting bottle 11, position sensor II 12, shrinking feed pipe 13, weighing barrel 14, flip drive frame 15, flip drive motor 16, position sensor III 17, weighing sensor 18, discharge pipe 19, weighing barrel housing 20, flip in place detection switch 21, barrel zeroing stop block 22, zeroing in place detection switch 23. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0023] Example: Figure 1 , Figure 2 and Figure 3As shown, a high-precision weighing sample collector comprises a frame 8, and a sample collector chassis 10 is provided on the four corners of the lower end of the frame 8 and is welded and fixed to the frame 8 in an integrated manner. A weighing material guide assembly 1 connected to the frame 8 is provided on the frame 8, and a drop hopper 2 plugged into the weighing material guide assembly 1 is provided between the weighing material guide assembly 1 and the frame 8. The weighing material guide assembly 1 comprises a weighing material barrel 14, and a weighing material barrel shell 20 sleeved with the weighing material barrel 14 is provided on the outer periphery of the weighing material barrel 14, and a constricted feed pipe 13 plugged into the weighing material barrel 14 is provided on the upper end of the weighing material barrel shell 20, and a discharge pipe 19 connected to the drop hopper 2 is provided at the lower part of the weighing material barrel shell 20. A flip drive motor 16 is provided on the weighing barrel housing 20, a flip drive frame 15 is provided between the flip drive motor 16 and the weighing barrel 14, and a weighing sensor 18 is provided between the front end of the flip drive frame 15 and the lower end of the weighing barrel 14. A position sensor III 17 is provided below the flip drive motor 16 for photoelectric induction with the flip drive frame 15. A flip in place detection switch 21 is provided above the rear end of the flip drive motor 16, a reset in place detection switch 23 is provided below the rear end of the flip drive motor 16, and a barrel reset stop block 22 is provided between the flip in place detection switch 21 and the reset in place detection switch 23.

[0024] A sample collecting bottle rack 9 is provided in the frame 8 and is connected to the frame 8 in a sliding manner. Four sample collecting bottles 11 are provided on the sample collecting bottle rack 9 and are movably connected to the drop hopper 2. A position sensor II 12 is provided on the side of the drop hopper 2 and is photoelectrically inductively connected to the sample collecting bottles 11. A rotating shaft 7 is provided on the sample collecting bottle rack 9 and is integrally welded with the sample collecting bottle rack 9 and is sleeved with the upper and lower ends of the frame 8 in a bearing manner. A sample collector rotating motor 5 is provided on the side of the drop hopper 2 and is bolted and fixed to the frame 8. A driving gear 6 is provided between the upper end of the rotating shaft 7 and the sample collector rotating motor 5 and is tooth-shaped and core-driven with the sample collector rotating motor 5. A position sensor I 3 is provided at the front end of the sample collector rotating motor 5. An inductive transition block 4 is provided between the position sensor I 3 and the driving gear 6 and is screwed and fixed to the upper end of the rotating shaft 7.

[0025] Working principle: When the coal sample enters the constricted feeding pipe 13, the material gathers and enters the weighing barrel 14. The upper opening of the weighing barrel 14 is an arc-shaped structure, and there is a gap between the arc cover plate on the outer shell 20 of the weighing barrel 2, which not only ensures that the material does not leak when entering the barrel, but also ensures that there is no external force when the weighing barrel 14 is collected and turned over to affect the weighing accuracy.

[0026] After the material enters the weighing barrel 14, the weighing sensor 18 at the bottom of the weighing barrel 14 weighs the material. After the weighing of a single material sample is completed, the flip drive motor 16 drives the flip drive frame 15 to drive the weighing barrel 14 to flip and unload. After the flip-in-place detection switch 21 detects that the flip is in place, the flip drive motor 16 brakes to complete a weighing and unloading action. After the flip drive motor 16 rotates back to the starting position and hits the barrel zeroing stop block 22, the zeroing in-place detection switch 23 sends a signal. The flip drive motor 16 drives the weighing barrel 14 back to the starting position and resets, waiting for the next material to be measured to enter. The material measured once is sent into the sample collection bottle 11 in the frame 8 after passing through the discharge pipe 19, completing the weighing and sample collection process of a single material.

[0027] When the sample collecting bottle 11 at the sample collecting station below the drop hopper 2 reaches the set sample collecting weight, the sample collecting device rotating motor 5 drives the sample collecting bottle rack 9 to select the next sample collecting bottle 11 to be collected for sample collection until all coal samples are weighed and packaged.

[0028] Since the weighing barrel 14 is only in contact with the weighing sensor 18 during the sample collection process, and the range of the weighing sensor 18 is not much different from the weight of the material weighed in a single time, and the weighing barrel 14 is made of mirror stainless steel and the folded edges are rounded to ensure that no material is left during unloading.

[0029] In summary, the high-precision weighing sample collector has the characteristics of compact structure, good operation stability, high accuracy and convenient operation. It solves the problem of large weight error of materials in the sample collection bottle and improves the accuracy level of the material weighing process.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0031] In summary, the above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A high-precision weighing sample collector, characterized in that: The invention comprises a frame (8), wherein a weighing material guide component (1) connected to the frame (8) is provided on the frame (8), and a drop hopper (2) plugged into the weighing material guide component (1) is provided between the weighing material guide component (1) and the frame (8); the weighing material guide component (1) comprises a weighing material barrel (14), a weighing material barrel shell (20) sleeved with the weighing material barrel (14) is provided on the outer periphery of the weighing material barrel (14), a flipping drive motor (16) is provided on the weighing material barrel shell (20), a flipping drive frame (15) is provided between the flipping drive motor (16) and the weighing material barrel (14), and a weighing sensor (18) is provided between the front end of the flipping drive frame (15) and the lower end of the weighing material barrel (14).

2. A high-precision weighing sample collector according to claim 1, characterized in that: A flipping in-position detection switch (21) is provided above the rear end of the flipping drive motor (16), a clearing in-position detection switch (23) is provided below the rear end of the flipping drive motor (16), and a barrel clearing stop block (22) is provided between the flipping in-position detection switch (21) and the clearing in-position detection switch (23).

3. A high-precision weighing sample collector according to claim 2, characterized in that: A position sensor III (17) for photoelectric induction with the flip driving frame (15) is provided below the flip driving motor (16).

4. A high-precision weighing sample collector according to claim 1, characterized in that: The upper end of the weighing barrel housing (20) is provided with a constricted feed pipe (13) which is plug-connected to the weighing barrel (14), and the lower part of the weighing barrel housing (20) is provided with a discharge pipe (19) which is connected to the drop hopper (2).

5. A high-precision weighing sample collector according to claim 1, characterized in that: The frame (8) is provided with a sample collecting bottle rack (9) which is slidably connected to the frame (8), and the sample collecting bottle rack (9) is provided with a plurality of sample collecting bottles (11) which are movably connected to the drop hopper (2).

6. A high-precision weighing sample collector according to claim 5, characterized in that: A position sensor II (12) is provided on the side of the drop hopper (2) for photoelectric induction with the sample collecting bottle (11).

7. A high-precision weighing sample collector according to claim 5, characterized in that: The sample collecting bottle rack (9) is provided with a rotating shaft (7) which is integrally welded with the sample collecting bottle rack (9) and is sleeved with the upper and lower ends of the frame (8) in a bearing-like manner. The side of the drop hopper (2) is provided with a sample collector rotating motor (5) which is bolted and fixed to the frame (8). A driving gear (6) which is toothed and internally driven with the sample collector rotating motor (5) is provided between the upper end of the rotating shaft (7) and the sample collector rotating motor (5).

8. A high-precision weighing sample collector according to claim 7, characterized in that: A position sensor I (3) is provided at the front end of the sample collector rotating motor (5), and an induction transition block (4) is provided between the position sensor I (3) and the driving gear (6) and is screw-fixed to the upper end of the rotating shaft (7).

9. A high-precision weighing sample collector according to claim 1, characterized in that: The four corners of the lower end of the frame (8) are all provided with a sample collector chassis (10) which is integrally welded and fixed to the frame (8).

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