Automatic re-weight device and process method for ignition powder powder

Abstract

The invention relates to an ignition powder automatic re-weight device and a process method, through the design of the automatic re-weight device, automatic stirring and weighing operation of powder is realized, and direct contact of people and powder during manual operation is effectively avoided, so that potential safety hazards are avoided, and the health of operators is protected. The device adopts two sets of independent vertical driving units to drive the stirring mechanism and the medicine basin to ascend and descend, medicine powder is stirred through a paddle structure, and the mobility of the medicine powder and the volatilization uniformity of a solvent are improved. And meanwhile, the re-weight precision is improved in combination with a re-weight control process parameter table. According to the automatic re-weight device and the process method, the production efficiency is improved, the labor intensity of workers is reduced, and the automatic re-weight device and the process method can be widely applied to re-weight operation of various initiating explosive device medicament manufacturing and have remarkable technical effects and practical value.

Description

Technical Field

[0001] The present invention relates to the technical field of explosive devices, and in particular to an automatic re-weighing device for ignition powder and a process method. Background Art

[0002] Before the ignition powder is pressed into a column, the solvent content in the mixed powder must be precisely controlled. Traditionally, this involves manually stirring the powder in a basin with a copper rake to evaporate the solvent, and then weighing the stirred powder. This process requires repeated stirring and weighing until the solvent content reaches the target value. We call this multiple stirring and weighing process repeated weighing.

[0003] However, manual reweighing has numerous drawbacks. First, there are significant safety risks, as operators must come into direct contact with the powder, which presents a risk of combustion. Second, reweighing accuracy is low, and repeated weighing operations can easily lead to misreading and deviations. Furthermore, production efficiency is low, as operators must frequently repeat the mixing and weighing operations, calculating the difference between the current powder weight and the target weight to determine the mixing time and degree to prevent over-adjustment and deviations. Furthermore, the high volatility of the binder in the powder is harmful to the operator's health, and prolonged standing operation can overdraw their physical strength. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic reweighing device and process method for ignition powder, so as to solve the problems of large safety hazards, low reweighing accuracy, low production efficiency, damage to health and labor consumption in the manual reweighing operation in the prior art.

[0005] The present invention is achieved by adopting the following technical scheme: an automatic reweighing device for ignition powder, including a stirring device, a medicine basin, and a weighing device, wherein the stirring device is arranged above the medicine basin, the medicine basin is arranged above the weighing device, the stirring device is arranged on a stirring lifting mechanism, and the medicine basin is arranged on the medicine basin lifting mechanism, the stirring device is driven to enter and exit the medicine basin by the stirring lifting mechanism, and the medicine basin and the weighing device are driven to be placed and separated by the medicine basin lifting mechanism.

[0006] Furthermore, the stirring device is a stirring blade, and the stirring blade is driven to rotate by a stirring motor.

[0007] Furthermore, the stirring blades adopt a double-blade circularly symmetrical layout structure, and the stirring blades are installed at a depression angle of 40° with respect to the bottom surface of the medicine basin.

[0008] Furthermore, the medicine basin includes a basin body and a positioning ring, the positioning ring is arranged on the outside of the basin body, and the medicine basin lifting mechanism also includes a bracket, the positioning ring and the bracket cooperate with each other, and the medicine basin is supported by the bracket.

[0009] Furthermore, a 45° upper conical surface is provided on the inner side of the bracket, and a 45° inverted conical surface is also provided on the outer circle of the positioning ring, and the two conical surfaces fit together.

[0010] A method for automatically reweighing ignition powder is implemented based on an automatic reweighing device for ignition powder according to any one of claims 1 to 5, and is characterized by comprising the following steps: Step 1: Place the medicine basin containing the wet-mixed medicine powder on the medicine basin bracket; Step 2: Start the stirring lifting mechanism, lower the stirring mechanism to a preset position, and start the stirring motor to rotate the stirring mechanism to stir the powder to volatilize the solvent; Step 3: After the stirring is completed, the medicine basin lifting mechanism is started to lower the medicine basin to the weighing device, and the weighing device is used to weigh the medicine powder; Step 4: Compare the weighed value with the target value. If the target weight requirement is not met, adjust the parameters such as stirring time and speed, and repeat steps 2 and 3 until the target weight requirement is met.

[0011] Furthermore, when adjusting parameters such as stirring time and speed in step 4, when the difference between the weighing value and the target weight is greater than 60g, stirring and weight reduction are carried out at 300s and 60r / min; when the difference between the weighing value and the target weight is greater than 30g and less than 60g, stirring and weight reduction are carried out at 200s and 60r / min; when the difference between the weighing value and the target weight is greater than 15g and less than 30g, stirring and weight reduction are carried out at 120s and 60r / min; when the difference between the weighing value and the target weight is greater than 8g and less than 15g, stirring and weight reduction are carried out at 40s and 50r / min; when the difference between the weighing value and the target weight is greater than 3g and less than 8g, stirring and weight reduction are carried out at 20s and 50r / min; when the difference between the weighing value and the target weight is greater than 0.7g and less than 3g, stirring and weight reduction are carried out at 10s and 50r / min.

[0012] The automatic re-weighing device and process method of ignition powder described in the present invention have the following beneficial effects: The isolation of personnel and drugs prevents the risk of operators being injured by drug powder explosion, ensuring the safety of operators; It realizes the automation of repeated operations, reduces the labor intensity of workers and improves production efficiency; The re-weighing accuracy is improved, meeting the precise control requirements for solvent content in the production of explosives pharmaceuticals. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of an automatic reweighting device for ignition powder; Figure 2 This is a schematic diagram of the positions of the stirring blades, bracket and medicine basin; Figure 3 It is a process flow chart of the present invention; In the figure, 1-stirring and lifting mechanism, 2-stirring blade, 3-medicine basin lifting mechanism, 4-medicine basin, 5-weighing device, 31-bracket, 41-positioning ring, 42-basin body. DETAILED DESCRIPTION

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention. Example

[0017] like Figure 1-Figure 3 As shown, an automatic reweighing device for ignition powder comprises a stirring and lifting mechanism 1, a stirring paddle 2, a medicine basin lifting mechanism 3, a medicine basin 4, and a weighing device 5. The stirring and lifting mechanism 1 is used to drive the stirring paddle 2 up and down, while the medicine basin lifting mechanism 3 is used to drive the medicine basin 4 up and down. The stirring paddle 2 is driven by a motor to stir the powder in the medicine basin 4 to volatilize the solvent. After stirring, the medicine basin lifting mechanism 3 lowers the medicine basin 4 onto the weighing device 5, which then weighs the powder.

[0018] like Figure 2As shown in the figure, the positioning ring 41 and the bracket 31 on the left side of the basin body 42 are in a receiving state, and the positioning ring 41 and the bracket 31 on the right side are in a detached state. This state is only used for structural illustration. In actual use, the positioning rings 41 and the bracket 31 on both sides of the figure are in the same state. The stirring blade 2 adopts a double-blade circularly symmetrical layout structure. The stirring blade 2 is argon arc welded to the rotating shaft and ground and polished to prevent the accumulation of floating medicine. The stirring blade 2 is installed at a 40° depression angle to the bottom surface of the medicine basin 4 so that the powder can flow up and down during stirring. The medicine basin 4 includes a basin body 42 and a positioning ring 41. The positioning ring 41 is arranged on the outside of the basin body 42. The medicine basin lifting mechanism 3 is provided with a bracket 31. The bracket 31 is used to cooperate with the positioning ring 41 to receive the medicine basin 4 and move the medicine basin 4 to the weighing equipment 5 after the stirring is completed. In order to meet the requirement of completely disengaging the medicine basin 4 from the bracket 31 during weighing, a 45° conical surface is provided on the inner side of the bracket 31 to cooperate with the 45° conical surface of the outer circle of the medicine basin waist positioning ring 41.

[0019] A method for automatically reweighting ignition powder comprises the following steps: Step 1: Place the medicine basin containing the wet-mixed medicine powder on the medicine basin bracket; Step 2: Start the stirring lifting mechanism, lower the stirring mechanism to a preset position, and start the stirring motor to rotate the stirring mechanism to stir the powder to volatilize the solvent; Step 3: After the stirring is completed, the medicine basin lifting mechanism is started to lower the medicine basin to the weighing device, and the weighing device is used to weigh the medicine powder; Step 4: Compare the weighed value with the target value. If the target weight requirement is not met, adjust the parameters such as stirring time and speed according to the repeated weight control process parameter table, and repeat steps 2 and 3 until the target weight requirement is met. The repeated control process parameter table is shown in Table 1.

[0020] Table 1 Re-control process parameters

[0021] 1000g of powder was used as the test object. The medicine basin containing the wet-mixed powder was placed on an electronic balance. Under the conditions of an ambient relative humidity of 60% and a temperature of 23°C, the weight change of the powder was statically tested. The test results are shown in Table 2.

[0022] Table 2 Wet mixing time-weight change table

[0023] According to the formulated table 1 of repeated control process parameters, multiple tests were carried out and the data are as follows: When the weight was 1180g (the weight of 1000g of powder after wet mixing) and the stirring speed was 300s and 60r / min, the average weight loss for the first time was 52g. After the first gear, the second gear was stirred at 200s and 60r / min, with an average weight reduction of 31g each time; The third gear is stirred at 120s and 60r / min, with an average weight reduction of 12g each time; The fourth gear is stirred at 40s and 50r / min, with an average weight reduction of 5g each time; The fifth gear was stirred at 20s and 50r / min, with an average weight reduction of 1.8g each time; The sixth gear was stirred at 10s and 50r / min, with an average weight reduction of 0.52g each time.

[0024] After experimental verification, the repetition accuracy requirement within 0.7g can be achieved.

[0025] The above embodiments describe the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Without departing from the spirit and scope of the present invention, modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention should be within the scope of protection of the appended claims.

Claims

1. An automatic reweighing device for ignition powder, comprising a stirring device, a medicine basin (4), and a weighing device (5), wherein the stirring device is arranged above the medicine basin (4), the medicine basin (4) is arranged above the weighing device (5), the stirring device is arranged on a stirring lifting mechanism (1), and the medicine basin (4) is arranged on a medicine basin lifting mechanism (3), the stirring device is driven by the stirring lifting mechanism (1) to enter and leave the medicine basin (4), and the medicine basin (4) is driven by the medicine basin lifting mechanism (3) to be placed on the weighing device (5) and leave the weighing device (5).

2. The automatic re-weighing device for ignition powder according to claim 1, characterized in that: The stirring device is a stirring blade (2), and the stirring blade (2) is driven to rotate by a stirring motor.

3. The automatic re-weighing device for ignition powder according to claim 2, characterized in that: The stirring blades (2) adopt a double-blade circularly symmetrical layout structure, and the stirring blades (2) are installed at a depression angle of 40° with the bottom surface of the medicine basin (4).

4. The automatic re-weighing device for ignition powder according to claim 1, characterized in that: The medicine basin (4) comprises a basin body (42) and a positioning ring (41), wherein the positioning ring (41) is arranged outside the basin body (42), and the medicine basin lifting mechanism (3) further comprises a bracket (31), wherein the positioning ring (41) and the bracket (31) cooperate with each other and support the medicine basin (4) via the bracket (31).

5. The automatic re-weighing device for ignition powder according to claim 4, characterized in that: The inner side of the bracket (31) is provided with a 45° upper conical surface, and the outer circle of the positioning ring (41) is also provided with a 45° inverted conical surface, and the two conical surfaces fit together.

6. A method for controlling the automatic reweighting of ignition powder, implemented based on the automatic reweighting device for ignition powder according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Place the medicine basin containing the wet-mixed medicine powder on the medicine basin bracket; Step 2: Start the stirring lifting mechanism, lower the stirring mechanism to a preset position, and start the stirring motor to rotate the stirring mechanism to stir the powder to volatilize the solvent; Step 3: After the stirring is completed, the medicine basin lifting mechanism is started to lower the medicine basin to the weighing device, and the weighing device is used to weigh the medicine powder; Step 4: Compare the weighed value with the target value. If the weight requirement is not met, adjust the parameters such as stirring time and speed, and repeat steps 2 and 3 until the weight requirement is met.

7. The method for automatically re-weighting ignition powder according to claim 6, characterized in that: When adjusting parameters such as stirring time and speed in the step 4, when the difference between the weighing value and the target weight is greater than 60g, stirring and reducing the weight is carried out at 300s and 60r / min; when the difference between the weighing value and the target weight is greater than 30g and less than 60g, stirring and reducing the weight is carried out at 200s and 60r / min; when the difference between the weighing value and the target weight is greater than 15g and less than 30g, stirring and reducing the weight is carried out at 120s and 60r / min; when the difference between the weighing value and the target weight is greater than 8g and less than 15g, stirring and reducing the weight is carried out at 40s and 50r / min; when the difference between the weighing value and the target weight is greater than 3g and less than 8g, stirring and reducing the weight is carried out at 20s and 50r / min; when the difference between the weighing value and the target weight is greater than 0.7g and less than 3g, stirring and reducing the weight is carried out at 10s and 50r / min.

Images