Automatic sodium nitrite feeding system for emulsion explosive production workshop

Abstract

The utility model relates to the technical field of emulsion explosives, in particular to an automatic sodium nitrite feeding system for an emulsion explosive production workshop, which comprises a base, a storage hopper, a heating plate, a crushing roller, a driving mechanism, a conveying pipe, a first driving motor, a controller, a supporting plate, a weighing sensor and a second driving motor, and sodium nitrite can be automatically crushed and quantitatively fed.

Description

Technical Field

[0001] This utility model relates to the field of emulsion explosives technology, and in particular to an automatic sodium nitrite feeding system for an emulsion explosives production workshop. Background Technology

[0002] In current emulsion explosive production, sodium nitrite requires manual crushing and weighing, which leads to low efficiency, large proportioning errors, and operational hazards. Manual operation results in high staffing levels in the workshop. Existing emulsion explosive production processes require pre-weighing of the raw material sodium nitrite before feeding it into the equipment for processing. Currently, most processes control the feeding by manual weighing. This traditional manual process is not only physically demanding for workers but also makes it difficult to avoid human error during production, leading to product quality problems and safety hazards. Furthermore, sodium nitrite is often purchased in bagged packaging, mostly in lumps, requiring operators to crush it with wooden mallets, which also requires considerable manpower and time. Therefore, there is an urgent need for an automatic sodium nitrite feeding system for emulsion explosive production workshops, capable of automatically crushing and quantitatively dispensing sodium nitrite. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an automatic sodium nitrite feeding system for emulsion explosive production workshops, which can automatically crush and quantitatively feed sodium nitrite.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an automatic sodium nitrite feeding system for an emulsion explosive production workshop, comprising:

[0005] Base:

[0006] A storage hopper is connected to a base. The upper part of the storage hopper has a feed inlet, and the lower part of the storage hopper has a first discharge outlet.

[0007] Heating element, which is connected to the outer wall of the storage hopper;

[0008] Crushing rollers, two crushing rollers are rotatably connected inside the storage hopper, and the two crushing rollers rotate in opposite directions;

[0009] The drive mechanism is used to drive the crushing rollers to rotate. The drive mechanism includes a first gear, a second gear, and a first drive motor. The first gear is coaxially connected to the output shaft of one of the crushing rollers, and the second gear is coaxially connected to the output shaft of the other crushing roller. The first gear and the second gear mesh, and the first drive motor is connected to one of the crushing rollers in a transmission connection.

[0010] The conveying pipe is connected to the first discharge port of the storage hopper. A valve device is installed inside the conveying pipe. A second discharge port is provided at the lower part of the conveying pipe. A hinged support plate is provided at the second discharge port. A weighing sensor is provided at the lower part of the support plate.

[0011] The first drive motor drives the support plate to rotate.

[0012] The controller is electrically connected to the drive mechanism, valve device, weighing sensor, and second drive motor.

[0013] Furthermore, a foaming agent preparation tank is provided on one side of the second discharge port. The upper part of the foaming agent preparation tank is provided with a feed pipe, a water inlet pipe and an additive pipe. The feed pipe is located directly below one end of the support plate. A liquid level sensor is provided inside the foaming agent preparation tank, and the controller is electrically connected to the liquid level sensor.

[0014] Furthermore, baffles are provided on both sides of the second discharge port along the Y direction of the setting direction.

[0015] Furthermore, one side of one of the baffles is provided with a cylinder, the cylinder's axis is in the X direction, the rotation axis of the support plate is provided with an extension section facing the cylinder, the extension section is provided with a through hole, and the axis of the through hole is coaxial with the axis of the cylinder.

[0016] Furthermore, the valve device includes a hydraulic cylinder, a fixed plate, and a connecting plate. The fixed plate is connected to the outer wall of the conveying pipe. The outer wall of the conveying pipe on one side of the fixed plate has an opening that matches the connecting plate. The hydraulic cylinder is connected to the fixed plate. The axial direction of the hydraulic cylinder is X-direction. The connecting plate is connected to the piston rod of the hydraulic cylinder. The hydraulic cylinder drives the connecting plate to switch between the first state and the second state.

[0017] In the first state, the connecting plate seals the delivery pipe;

[0018] In the second state, the connecting plate opens the delivery pipe.

[0019] Furthermore, a recycling bin is provided on the outer wall of the conveying pipe, and a connection port is provided on the side wall of the recycling bin. The connection port is connected to the inside of the conveying pipe, and an inclined filter screen is provided inside the conveying pipe. The filter screen is located above the valve device, and the lower end of the filter screen is connected to the connection port.

[0020] Furthermore, the recycling bin is equipped with a hinged door.

[0021] The beneficial effects of this utility model are as follows: compared with the prior art, by setting up a crushing roller, a support plate, a weighing sensor, and a second drive motor, it is possible to automatically crush and quantitatively add sodium nitrite. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an automatic sodium nitrite feeding system in an emulsion explosive production workshop, according to a specific embodiment of this utility model.

[0023] Figure 2 This is a front view of an automatic sodium nitrite feeding system for an emulsion explosive production workshop, according to a specific embodiment of this utility model.

[0024] Figure 3 for Figure 2 A-direction cross-section view;

[0025] Figure 4 This is a schematic diagram of the controller's circuit connection.

[0026] Label Explanation

[0027] 1. Base;

[0028] 2. Storage hopper; 21. Feed inlet; 22. First discharge outlet;

[0029] 3. Heating element;

[0030] 4. Crushing roller;

[0031] 5. Drive mechanism; 51. First gear; 52. Second gear; 53. First drive motor;

[0032] 6. Conveying pipe; 61. Valve device; 611. Hydraulic cylinder; 612. Fixing plate; 613. Connecting plate; 62. Second discharge port; 621. Support plate; 6211. Weighing sensor; 622. Second drive motor; 623. Extension section; 6231. Through hole; 624. Baffle; 63. Baffle; 631. Cylinder; 64. Recycling box; 641. Connection port; 642. Box door; 65. Filter screen;

[0033] 7. Controller;

[0034] 8. Foaming agent preparation tank; 81. Feed pipe; 82. Water inlet pipe; 83. Additive pipe; 84. Liquid level sensor. Detailed Implementation

[0035] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0036] Please refer to Figures 1 to 4 An automatic sodium nitrite feeding system for an emulsion explosive production workshop, comprising:

[0037] Base 1:

[0038] Storage hopper 2 is connected to base 1. Storage hopper 2 has a feed inlet 21 at the top and a first discharge outlet 22 at the bottom.

[0039] Heating element 3 is connected to the outer wall of storage container 2;

[0040] Crushing roller 4, two crushing rollers 4 are rotatably connected inside the storage hopper 2, and the two crushing rollers 4 rotate in opposite directions;

[0041] The drive mechanism 5 is used to drive the crushing roller 4 to rotate. The drive mechanism 5 includes a first gear 51, a second gear 52 and a first drive motor 53. The first gear 51 is coaxially connected to the output shaft of one of the crushing rollers 4, and the second gear 52 is coaxially connected to the output shaft of the other crushing roller. The first gear 51 and the second gear 52 mesh, and the first drive motor 53 is connected to one of the crushing rollers 4 in a transmission connection.

[0042] The conveying pipe 6 is connected to the first discharge port 22 of the storage hopper 2. A valve device 61 is installed inside the conveying pipe 6. A second discharge port 62 is provided at the lower part of the conveying pipe 6. A hinged support plate 621 is provided at the discharge port of the second discharge port 62. A weighing sensor 6211 is provided at the lower part of the support plate 621.

[0043] The first drive motor 53 drives the support plate 621 to rotate.

[0044] The controller 7 is electrically connected to the drive mechanism 5, the valve device 61, the weighing sensor 6211, and the second drive motor 622.

[0045] In the above embodiments, workshop employees can put the daily amount of sodium nitrite into the crushing and storage hopper 2 and turn on the heating element 3 before the production line starts to prevent the sodium nitrite from absorbing moisture and clumping. Then, the controller 7 controls the first drive motor 53 to start, and the two crushing rollers 4 rotate to crush the lumpy sodium nitrite into granules, which fall from the first discharge port 22 of the storage hopper 2 onto the support plate 621. When the value of the weighing sensor 6211 reaches the specified feeding threshold, it transmits a signal to the controller 7. The controller 7 drives the first drive motor 53 and the valve device 61 to close, and the second drive motor 622 to open, thereby causing the support plate 621 to rotate, and then the granular sodium nitrite is discharged from the second discharge port 62. Compared with the prior art, by setting the crushing rollers 4, the support plate 621, the weighing sensor 6211, and the second drive motor 622, the automatic crushing and quantitative feeding of sodium nitrite can be realized.

[0046] As an optional implementation, a foaming agent preparation tank 7 is provided on one side of the second discharge port 62. The upper part of the foaming agent preparation tank 7 is provided with a feed pipe 71, a water inlet pipe 72 and an additive pipe 73. The feed pipe 71 is located directly below one end of the support plate 621. A liquid level sensor 74 is provided inside the foaming agent preparation tank 7. The controller 7 is electrically connected to the liquid level sensor 74.

[0047] In the above embodiments, when the liquid level sensor 74 detects that the liquid level in the foaming agent preparation tank is lower than the set threshold, the controller 7 controls the first drive motor 53 to open and the valve device 61 to open, so that the broken sodium nitrite falls onto the support plate 621. Then, the second drive motor 622 drives the support plate 621 to rotate, so that one end of the support plate 621 abuts against the top of the feed pipe, thereby allowing the sodium nitrite to enter the foaming agent preparation tank 7. Water is then added through the water inlet pipe 72 and additives are input through the additive pipe 73, so that they are mixed in the foaming agent preparation tank 7.

[0048] As an optional implementation, the second discharge port 62 is provided with baffles 63 on both sides along the Y direction of the setting direction.

[0049] In the above embodiments, when the support plate 621 is rotated to the point where one end of the support plate 621 abuts against the upper part of the feed pipe 71, the baffle 63 is located on both sides of the support plate 621, thereby preventing nitrous acid from leaking out from both sides of the support plate 621.

[0050] As an optional implementation, a cylinder 631 is provided on one side of a baffle 63. The axial direction of the cylinder 631 is X-direction. The rotation axis of the support plate 621 is provided with an extension section 623 in the direction of the cylinder 631. The extension section 623 is provided with a through hole 6231. The axial direction of the through hole 6231 is coaxial with the axial direction of the cylinder 631.

[0051] In the above embodiments, by having the telescopic end of the cylinder 631 pass through the through hole 6231, the support plate 621 does not rotate when the sodium nitrite is being weighed, thus preventing material leakage.

[0052] As an optional implementation, the valve device 61 includes a hydraulic cylinder 611, a fixed plate 612, and a connecting plate 613. The fixed plate 612 is connected to the outer wall of the conveying pipe 6. The outer wall of the conveying pipe 6 located on one side of the fixed plate 612 has an opening that matches the connecting plate 613. The hydraulic cylinder 611 is connected to the fixed plate 612. The axial direction of the hydraulic cylinder 611 is X-direction. The connecting plate 613 is connected to the piston rod of the hydraulic cylinder 611. The hydraulic cylinder 611 drives the connecting plate 613 to switch between a first state and a second state.

[0053] In the first state, the connecting plate 613 closes the conveying pipe 6;

[0054] In the second state, the connecting plate 613 opens the delivery pipe 6.

[0055] In the above embodiments, the hydraulic cylinder 611 is driven by the controller 7 to extend and retract, thereby opening and closing the delivery pipe 6.

[0056] As an optional implementation, the outer wall of the conveying pipe 6 is provided with a recycling box 64, the side wall of the recycling box 64 is provided with a connection port 641, the connection port 641 communicates with the inside of the conveying pipe 6, and the inside of the conveying pipe 6 is provided with an inclined filter screen 65, the filter screen 65 is located above the valve device 61, and the lower end of the filter screen 65 is connected to the connection port 641.

[0057] In the above embodiments, by setting an inclined filter screen 65, sodium nitrite that meets the particle size requirement can enter the foaming agent preparation tank 7, thereby shortening the stirring time, while nitrite particles that do not meet the particle size requirement enter the recovery tank 64 through the inclined filter screen 65, waiting for the staff to crush them again.

[0058] As an optional implementation, the recycling bin 64 is provided with a hinged door 642.

[0059] In the above embodiments, it is convenient for staff to further crush sodium nitrite that does not meet the particle size requirements through the box door 642.

[0060] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sodium nitrite automatic feeding system for emulsion explosive production plant, characterized in that, The utility model relates to a base, a storage hopper, a heating sheet, two crushing rollers, a driving mechanism, a conveying pipe, a first driving motor, a controller, a foaming agent preparation tank and a recovery tank. The base is connected with the storage hopper, the upper part of the storage hopper is provided with an inlet, and the lower part of the storage hopper is provided with a first outlet. The heating sheet is connected with the outer wall of the storage hopper. The two crushing rollers are rotatably connected in the storage hopper, and the rotating directions of the two crushing rollers are opposite. The driving mechanism is used for driving the crushing rollers to rotate, and comprises a first gear, a second gear and a first driving motor. The first gear is coaxially connected with the output shaft of one of the crushing rollers. The second gear is coaxially connected with the output shaft of the other crushing roller. The first gear and the second gear are engaged. The first driving motor is drivingly connected with one of the crushing rollers.

2. The automatic sodium nitrite feeding system for emulsion explosive production plant according to claim 1, characterized in that, The conveying pipe is connected with the first outlet of the storage hopper.

3. The automatic sodium nitrite feeding system for emulsion explosive production plant according to claim 2, characterized in that, The valve device is arranged in the conveying pipe.

4. The automatic sodium nitrite feeding system for emulsion explosive production plant according to claim 3, characterized in that, The lower part of the conveying pipe is provided with a second outlet.

5. The automatic sodium nitrite feeding system for emulsion explosive production plant according to claim 1, characterized in that, The second outlet is provided with a hinged support plate. The lower part of the support plate is provided with a weighing sensor. The first driving motor drives the support plate to rotate.

6. The automatic sodium nitrite feeding system for emulsion explosive production plant according to claim 1, characterized in that, The controller is electrically connected with the driving mechanism, the valve device, the weighing sensor and the second driving motor.

7. The automatic sodium nitrite feeding system for emulsion explosive production plant according to claim 6, characterized in that, One side of the second outlet is provided with a foaming agent preparation tank. The upper part of the foaming agent preparation tank is provided with an inlet pipe, a water inlet pipe and an additive pipe. The inlet pipe is located directly below one end of the support plate. The foaming agent preparation tank is provided with a liquid level sensor. The controller is electrically connected with the liquid level sensor. Two sides of the second outlet along the setting direction Y are provided with baffles. One side of one of the baffles is provided with a cylinder. The axial direction of the cylinder is X. The rotating shaft of the support plate is provided with an extension segment in the direction of the cylinder. The extension segment is provided with a through hole. The axial direction of the through hole is coaxial with the axial direction of the cylinder. The valve device comprises a hydraulic cylinder, a fixed plate and a connecting plate. The fixed plate is connected with the outer wall of the conveying pipe. The outer wall of the conveying pipe located on one side of the fixed plate is provided with an opening matched with the connecting plate. The hydraulic cylinder is connected with the fixed plate. The axial direction of the hydraulic cylinder is X. The connecting plate is connected with the piston rod of the hydraulic cylinder. The hydraulic cylinder drives the connecting plate to switch between a first state and a second state. In the first state, the connecting plate closes the conveying pipe. In the second state, the connecting plate opens the conveying pipe. The outer wall of the conveying pipe is provided with a recovery tank. The side wall of the recovery tank is provided with a connecting port. The connecting port is in communication with the conveying pipe. The conveying pipe is provided with an inclined filter screen. The filter screen is located above the valve device. The low end of the filter screen is connected with the connecting port. The recovery tank is provided with a hinged tank door.

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