Propelling grain screening device

Abstract

The utility model provides a propellant grain screening device which comprises a vibrating disc, a conveying track and a material receiving box which are connected in sequence, the vibrating disc is provided with a material standing channel and a material screening channel, the material screening channel is provided with an ultrahigh limiting rod, and the ultrahigh limiting rod is used for shifting over a propellant grain higher than a preset height so that the propellant grain can roll to the middle of the vibrating disc. An ultralow discharging hole is further formed in the outer side wall of the screening channel and used for discharging the grain lower than the preset height. According to the propellant grain screening device provided by the utility model, grains move along the vertical material channel under the vibration action of the vibration disc until falling into the screening channel, the grains are converted into a vertical posture from a lying posture in the process, and the grains with the height larger than the preset height are poked down by virtue of the ultrahigh limiting rod on the screening channel, so that the grains fall into the vibration disc; and the grains with the height smaller than the preset height are discharged out of the screening channel through the ultra-low discharging holes, so that the grains with the sizes not meeting the requirement are effectively screened out, and the safety in the screening process is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of propellant charge screening device structures, and more specifically relates to a propellant charge screening device. Background Art

[0002] The propellant charge for life-saving bombs is a highly dangerous pyrotechnic product widely used in military ammunition. During the propellant charge processing, we must be highly vigilant against dangerous accidents and prevent them from happening.

[0003] Existing production processes can easily lead to defects such as distortion and deformation in propellant grains, which hinder subsequent cutting operations. Therefore, it is necessary to conduct preliminary screening of propellant grains before processing or assembly, selecting those with minimal deformation and meeting the requirements for subsequent processing.

[0004] Currently, manual visual screening is often used for screening. Because propellant is flammable, manual screening is inefficient and prone to fatigue, affecting screening accuracy. More importantly, it can easily lead to propellant column deflagration, resulting in loss of life and property. Utility Model Content

[0005] The purpose of the utility model is to provide a propellant charge screening device, which can ensure the accuracy of propellant charge screening, improve the screening efficiency of propellant charge, and improve the safety of propellant charge screening.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a propellant charge screening device, including a vibrating disk, a conveying track and a material receiving box connected in sequence, the vibrating disk has a vertical material channel and a screening channel extending circumferentially and connected in sequence, the feed end of the vertical material channel is connected to the vibrating disk, the feed end of the vertical material channel is higher than the feed end of the screening channel, so that the lying charge can be converted into an upright state, an ultra-high limit rod is provided on the screening channel, the ultra-high limit rod is used to knock down the charge above the preset height so that the charge rolls to the middle of the vibrating disk, and an ultra-low discharge hole is also provided on the outer wall of the screening channel, the ultra-low discharge hole is used to discharge the charge below the preset height.

[0007] In a possible implementation, the vibrating plate further has a material receiving channel arranged around the periphery of the vertical material channel and the screening material channel, and the material receiving channel is used to receive the medicine column discharged from the ultra-low discharge hole.

[0008] In some embodiments, a lying discharge hole is further provided on the side wall of the screening channel. The lying discharge hole is arranged near the feed end of the screening channel. The lying discharge hole is used to remove the lying powder column and make the powder column fall into the receiving channel.

[0009] In some embodiments, the ultra-low discharge hole and the lying discharge hole are respectively located on the outer ring side wall of the screening channel, and the ultra-low discharge hole and the lying discharge hole are respectively extended to the bottom wall of the screening channel.

[0010] In one possible implementation, the super-high limit rod is connected to the side wall of the screening channel and has a blocking rod extending horizontally toward the center of the vibrating disk. The blocking rod can abut against the peripheral wall of the medicine column to block the medicine column and push the medicine column to the middle of the vibrating disk.

[0011] In one possible implementation, the vibrating plate has a connecting track connected to the conveying track, and the outer end of the connecting track gradually extends downward, which is used to transform the medicine column from an upright state to a lying state. The conveying track is provided with a lifting and limiting seat, which is located above the conveying track and is used to cooperate with the conveying track to block medicine columns with a diameter greater than a preset diameter. The side of the conveying track is provided with a telescopic guide hopper that can move horizontally to approach the conveying track. The telescopic guide hopper can extend horizontally to receive the medicine column in the conveying track and guide the medicine column away from the receiving box.

[0012] In one possible implementation, the propellant charge screening device also includes a photoelectric sensor and a controller electrically connected to the photoelectric sensor. The photoelectric sensor is located on the discharge side of the lifting and limiting seat and is used to monitor the passage of the charge. The controller is used to receive the detection signal sent by the photoelectric sensor and send a telescopic instruction to the telescopic guide hopper. The controller is also used to send a first lifting instruction to the lifting and limiting seat.

[0013] In some embodiments, a lifting blocker electrically connected to the controller is also provided on the conveying track. The lifting blocker is located between the lifting material limit seat and the feed end of the conveying track. The lifting blocker is electrically connected to the controller and is used to receive the material blocking signal of the controller and move downward to cooperate with the conveying track to block the medicine column.

[0014] In some embodiments, a waste box is also provided on one side of the receiving box, the discharge end of the conveying track is arranged higher than the upper edge of the receiving box, and the telescopic guide hopper is used to receive the medicine column on the conveying track and guide the medicine column into the waste box.

[0015] In a possible implementation, the vibration plate, the material receiving box and the waste box are all made of copper.

[0016] The scheme shown in the embodiment of the present application is compared with the prior art. In the propellant charge screening device provided by the embodiment of the present application, the charge moves along the vertical material channel under the vibration action of the vibrating plate until it falls into the screening channel. During this process, the charge is transformed from a lying position to an upright position. With the help of the ultra-high limit rod on the screening channel, the charge greater than the preset height is knocked down and falls into the vibrating plate. With the help of the ultra-low discharge hole, the charge less than the preset height is discharged from the screening channel, so that the charge that does not meet the size requirements is effectively screened out, saving screening time and ensuring safety during the screening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, 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 these drawings without paying any creative labor.

[0018] Figure 1 A schematic structural diagram of a propellant charge screening device provided in an embodiment of the present utility model;

[0019] Figure 2 A schematic diagram of a partially enlarged structure of the propellant charge screening device provided by an embodiment of the present utility model from another angle;

[0020] Figure 3 For the embodiment of the utility model Figure 1 Schematic diagram of the structure of the middle conveyor track;

[0021] Figure 4 For the embodiment of the utility model Figure 1 Schematic diagram of the structure of the middle vibration plate.

[0022] Among them, the reference numerals in the figures are:

[0023] 1. Vibrating plate; 11. Frame; 12. Connecting track; 2. Conveying track; 21. Lifting and limiting seat; 22. Photoelectric sensor; 3. Receiving box; 4. Vertical material channel; 5. Screening channel; 51. Ultra-low discharge hole; 52. Lying discharge hole; 6. Ultra-high limit rod; 61. Blocking rod; 7. Receiving channel; 8. Telescopic guide hopper; 81. Waste box; 9. Lifting blocker; 91. Powder column. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "several" means two or more, unless otherwise clearly and specifically defined.

[0026] Please also refer to Figures 1 to 4 The propellant charge screening device provided by the present invention will now be described. The propellant charge screening device comprises a vibration plate 1, a conveying track 2 and a receiving box 3 connected in sequence. The vibration plate 1 has a vertical material channel 4 and a screening material channel 5 extending circumferentially and connected in sequence. The feed end of the vertical material channel 4 is connected to the vibration plate 1. The feed end of the vertical material channel 4 is arranged higher than the feed end of the screening material channel 5 so that the lying-down charge 91 can be converted into an upright state. An over-height limit rod 6 is provided on the screening material channel 5. The over-height limit rod 6 is used to knock down the charge 91 that is higher than a preset height so that the charge 91 rolls to the middle of the vibration plate 1. An over-low discharge hole 51 is also provided on the outer wall of the screening material channel 5. The over-low discharge hole 51 is used to discharge the charge 91 that is lower than the preset height.

[0027] The propellant charge screening device provided in this embodiment is compared with the prior art. The propellant charge screening device provided in this embodiment is that the charge 91 moves along the vertical material channel 4 under the vibration action of the vibrating disk 1 until it falls into the screening channel 5. During this process, the charge 91 is transformed from a lying position to an upright position. With the help of the super-high limit rod 6 on the screening channel 5, the charge 91 greater than the preset height is knocked down and falls into the vibrating disk 1. The charge 91 less than the preset height is discharged from the screening channel 5 with the help of the super-low discharge hole 51, so that the charge 91 that does not meet the size requirements is effectively screened out, saving screening time and ensuring safety during the screening process.

[0028] In this embodiment, the vibrating plate 1, conveying track 2, and material receiving box 3 can be arranged on a flat surface such as a platform or a frame 11, facilitating operations such as material loading. The preset height of the drug pellets 91 is 20 mm to 24 mm. When the drug pellets 91 are transferred from the vertical material channel 4 to the screening material channel 5, they are transformed from a lying position to an upright position. Drug pellets 91 with a height greater than 24 mm can be conveniently knocked down by the super-high limit rod 6, causing the drug pellets 91 to fall to the middle of the vibrating plate 1, preventing the drug pellets 91 from further moving along the screening material track to the conveying track 2. When the drug pellets 91 are less than 20 mm in height, the super-low discharge hole 51 can discharge drug pellets 91 below the preset height, preventing the drug pellets 91 from further moving along the screening material track to the conveying track 2. Only drug pellets 91 with a height between 20 mm and 24 mm can be smoothly delivered to the conveying track 2, effectively screening out unqualified drug pellets 91 that are too high or too low, thereby improving screening efficiency.

[0029] In one possible implementation, please also refer to Figures 1 to 4 The vibrating plate 1 further includes a receiving channel 7 disposed around the periphery of the vertical material channel 4 and the screening material channel 5. The receiving channel 7 is used to receive the pellets 91 discharged from the ultra-low material discharge hole 51. Located on the outer ring of the screening material channel 5, the receiving channel 7 can effectively receive pellets 91 discharged from the ultra-low material discharge hole 51 that are below a preset size, effectively separating unqualified pellets 91 from qualified pellets 91, achieving a good screening effect.

[0030] In some embodiments, please refer to Figures 1 to 4 A lying discharge hole 52 is also provided on the side wall of the screening channel 5. The lying discharge hole 52 is arranged near the feeding end of the screening channel 5. The lying discharge hole 52 is used to remove the medicine column 91 in a lying state and make the medicine column 91 fall into the receiving channel 7.

[0031] In this embodiment, when the medicine columns 91 are transferred from the vertical material channel 4 to the screening material channel 5, most of the medicine columns 91 can smoothly change from a lying state to an upright state, and a small number of medicine columns 91 fail to complete the state change and remain in a lying state. The lying discharge holes 52 on the screening material channel 5 can screen out the medicine columns 91 that have failed to change their state and discharge them into the peripheral material receiving channel 7, so as to avoid affecting the height detection of the medicine columns 91 during the subsequent screening process, so that the medicine columns 91 entering the conveying track 2 all meet the height requirements, thereby improving the accuracy of screening.

[0032] Specifically, the extending length of the lying discharge hole 52 along the circumference of the vibration plate 1 is greater than the height of the medicine column 91, and the height of the lying discharge hole 52 is greater than the diameter of the medicine column 91, so that the medicine column 91 that fails to turn into an upright state can be effectively screened out.

[0033] In some embodiments, please refer to Figures 1 to 4The ultra-low discharge hole 51 and the lying discharge hole 52 are respectively located on the outer side wall of the screening channel 5, and the ultra-low discharge hole 51 and the lying discharge hole 52 respectively extend to the bottom wall of the screening channel 5. When screening the lying grains 91 and the grains 91 below the preset height, both the grains 91 in the above-mentioned two states can be discharged into the receiving channel 7, thereby effectively screening out the grains 91.

[0034] On this basis, the ultra-low discharge hole 51 and the lying discharge hole 52 extend to the bottom wall of the screening channel 5 respectively. This setting can improve the convenience of falling of unqualified medicine columns 91, provide sufficient space for the falling of medicine columns 91, and help improve screening efficiency.

[0035] In one possible implementation, please also refer to Figures 1 to 4 The super-high limit rod 6 is connected to the side wall of the screening channel 5 and has a blocking rod 61 extending horizontally toward the center of the vibrating disk 1. The blocking rod 61 can abut against the peripheral wall of the medicine column 91 to block the medicine column 91 and push the medicine column 91 to the middle of the vibrating disk 1.

[0036] In this embodiment, the over-height limiting rod 6 is connected to the side wall of the screening channel 5 to ensure the reliability of the connection. The blocking rod 61 extending horizontally at the upper end is used to block the pellets 91 that are higher than the upright state and higher than the preset height. Under the blocking effect of the blocking rod 61, the pellets 91 are knocked down and fall to the middle area of ​​the vibrating plate 1, so that the over-height pellets 91 are effectively screened out.

[0037] In one possible implementation, please also refer to Figures 1 to 4 The vibrating plate 1 has a connecting track 12 connected to the conveying track 2. The outer end of the connecting track 12 gradually extends downward and is used to transform the medicine column 91 from an upright state to a lying state. The conveying track 2 is provided with a lifting and limiting seat 21. The lifting and limiting seat 21 is located above the conveying track 2 and is used to cooperate with the conveying track 2 to block the medicine column 91 with a diameter greater than a preset diameter. The side of the conveying track 2 is provided with a telescopic guide hopper 8 that can move horizontally to approach the conveying track 2. The telescopic guide hopper 8 can extend horizontally to receive the medicine column 91 in the conveying track 2 and guide the medicine column 91 away from the receiving box 3.

[0038] In this embodiment, the connecting track 12 is connected to the conveyor track 2. The end of the connecting track 12, away from the vibrating plate 1, gradually extends downward. The tilting of the lower end surface of the charge 91 causes the charge 91 to tilt along the track 12, forming a lying position. The diameter of the charge 91 is then checked by raising and lowering the limiting base 21. The acceptable diameter range for the charge 91 is 9 mm to 10 mm.

[0039] Under normal conditions, the lifting and blocking seat descends to a position contacting the upper edge of the conveyor track 2, and the two enclose a passage for the drug column 91. When the outer diameter of the drug column 91 is greater than 10 mm, it is difficult for the drug column 91 to pass through the above passage and is blocked on the conveyor track 2. At this time, the telescopic guide hopper 8 extends outward to the bottom of the conveyor track 2. By moving the lifting and blocking seat upward, the drug column is discharged into the telescopic guide hopper 8, effectively screening out drugs 91 with a diameter larger than the preset diameter.

[0040] In one possible implementation, please also refer to Figures 1 to 4 The propellant charge screening device also includes a photoelectric sensor 22 and a controller electrically connected to the photoelectric sensor 22. The photoelectric sensor 22 is located on the discharge side of the lifting and limiting seat 21 and is used to monitor the passage of the charge 91. The controller is used to receive the detection signal sent by the photoelectric sensor 22 and send a telescopic instruction to the telescopic guide hopper 8. The controller is also used to send a first lifting instruction to the lifting and limiting seat.

[0041] In this embodiment, in order to improve the degree of automation, a photoelectric sensor 22 and a controller are set. The photoelectric sensor 22 is used to monitor the medicine column 91 passing through the lifting and lowering material stop seat. When the medicine column 91 is not detected after a preset period of time, the controller can receive the detection signal of the photoelectric sensor 22 and can determine that the medicine column 91 is stuck according to the preset program. At this time, the controller sends an extension command to the telescopic guide hopper 8 and sends a first lifting command to the lifting and lowering material stop seat. The telescopic guide hopper 8 extends to the bottom of the conveying track 2. By moving the lifting and lowering material stop seat upward, the material column is discharged into the telescopic guide hopper 8, so that the medicine column 91 with a diameter greater than the preset diameter is effectively screened out.

[0042] In some embodiments, please refer to Figures 1 to 4 The conveying track 2 is also provided with a lifting blocker 9 electrically connected to the controller. The lifting blocker 9 is located between the lifting material limit seat 21 and the feeding end of the conveying track 2. The lifting blocker 9 is electrically connected to the controller and is used to receive the blocking signal of the controller and move downward to cooperate with the conveying track 2 to block the medicine column 91.

[0043] In this embodiment, in order to prevent subsequent drug pellets 91 from accidentally falling into the telescopic material guide seat, a lifting blocker 9 is further provided on the conveying track 2. When the lifting blocker blocks a drug pellet 91 with an excessively large diameter and the controller determines that the drug pellet needs to be collected separately, the controller sends an extension command to the telescopic material guide 8, a first lifting command to the lifting blocker, and a second lifting command to the lifting blocker 9. This causes the lifting blocker 9 to first block the subsequent drug pellet 91 and then release the excessively large drug pellet 91 into the telescopic material guide hopper 8 through the lifting blocker, thereby preventing the subsequent drug pellet 91 from accidentally falling.

[0044] Specifically, the lifting blocker 9 may adopt a rectangular block structure, and the end surface of the lifting blocker 9 adjacent to the vibration plate 1 is used to form a blocking effect on the subsequent charge 91.

[0045] In some embodiments, please refer to Figures 1 to 4 A waste box 81 is also provided on one side of the receiving box 3. The discharge end of the conveying track 2 is arranged higher than the upper edge of the receiving box 3. The telescopic guide hopper 8 is used to receive the medicine column 91 on the conveying track 2 and guide the medicine column 91 into the waste box 81.

[0046] In this embodiment, the telescopic guide hopper 8 can extend horizontally to the lower end of the conveying track 2 to receive the medicine column 91 whose diameter exceeds the preset diameter. It can also retract and move away from the conveying track 2 when the medicine column 91 is normally conveyed, ensuring that qualified medicine column 91 can smoothly enter the receiving box 3.

[0047] The waste box 81 on the side of the receiving box 3 can effectively accommodate the medicine columns 91. The discharge end of the telescopic guide hopper 8 extends to the side of the waste box 81 and tilts downward at a certain angle, so as to facilitate the guidance of medicine columns 91 that do not meet the diameter requirements into the waste box 81, thereby realizing the unified collection of unqualified medicine columns 91.

[0048] In one possible implementation, please also refer to Figures 1 to 4 The vibration plate 1, the material receiving box 3 and the waste box 81 are all made of copper. This setting is different from the way other components are made of steel. The choice of copper can effectively avoid the influence of static electricity and improve the safety of the screening of the drug column 91.

[0049] In the above-mentioned propellant charge screening device, the charge 91 moves along the vertical material channel 4 under the vibration action of the vibrating disk 1 until it falls into the screening channel 5. During this process, the charge 91 is transformed from a lying position to an upright position. With the help of the super-high limit rod 6 on the screening channel 5, the charge 91 greater than the preset height is knocked down and falls into the vibrating disk 1. With the help of the super-low discharge hole 51, the charge 91 less than the preset height is discharged from the screening channel 5, so that the charge 91 that does not meet the size requirements is effectively screened out, saving screening time and ensuring safety during the screening process.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A propellant charge screening device, characterized in that: The invention comprises a vibration plate (1), a conveying track (2) and a material receiving box (3) connected in sequence, wherein the vibration plate (1) has a vertical material channel (4) and a screening material channel (5) extending in a circumferential direction and connected in sequence, the feed end of the vertical material channel (4) is connected to the vibration plate (1), the feed end of the vertical material channel (4) is arranged higher than the feed end of the screening material channel (5) so that a medicine column (91) in a lying state can be converted into an upright state, the screening material channel (5) is provided with an ultra-high limit rod (6), the ultra-high limit rod (6) is used to knock down medicine columns (91) above a preset height so that the medicine columns (91) roll down to the middle of the vibration plate (1), and the outer wall of the screening material channel (5) is also provided with an ultra-low discharge hole (51), the ultra-low discharge hole (51) is used to discharge medicine columns (91) below a preset height.

2. The propellant charge screening device according to claim 1, characterized in that: The vibration plate (1) further comprises a material receiving channel (7) arranged around the periphery of the vertical material channel (4) and the screening material channel (5), and the material receiving channel (7) is used to receive the medicine column (91) discharged from the ultra-low discharge hole (51).

3. The propellant charge screening device according to claim 2, characterized in that: A lying discharge hole (52) is also provided on the side wall of the screening channel (5), and the lying discharge hole (52) is arranged close to the feeding end of the screening channel (5). The lying discharge hole (52) is used to remove the medicine column (91) in a lying state and make the medicine column (91) fall into the receiving channel (7).

4. The propellant charge screening device according to claim 3, characterized in that: The ultra-low discharge hole (51) and the lying discharge hole (52) are respectively located on the outer ring side wall of the screening channel (5), and the ultra-low discharge hole (51) and the lying discharge hole (52) respectively extend to the bottom wall of the screening channel (5).

5. The propellant charge screening device according to claim 1, wherein: The super-high limit rod (6) is connected to the side wall of the screening channel (5) and has a blocking rod (61) extending horizontally toward the center of the vibrating plate (1). The blocking rod (61) can abut against the peripheral wall of the drug column (91) to block the drug column (91) and push the drug column (91) to the middle of the vibrating plate (1).

6. The propellant charge screening device according to any one of claims 1 to 5, characterized in that: The vibration plate (1) has a connecting track (12) connected to the conveying track (2), the outer end of the connecting track (12) gradually extends downward and is used to transform the medicine column (91) from an upright state to a lying state. The conveying track (2) is provided with a lifting and limiting seat (21), and the lifting and limiting seat (21) is located above the conveying track (2) and is used to cooperate with the conveying track (2) to block medicine columns (91) with a diameter greater than a preset diameter. The side of the conveying track (2) is provided with a telescopic guide hopper (8) that can move horizontally to approach the conveying track (2), and the telescopic guide hopper (8) can extend horizontally to receive the medicine column (91) in the conveying track (2) and guide the medicine column (91) away from the receiving box (3).

7. The propellant charge screening device according to claim 6, characterized in that: The propellant charge screening device further comprises a photoelectric sensor (22) and a controller electrically connected to the photoelectric sensor (22), wherein the photoelectric sensor (22) is located on the discharge side of the lifting and limiting seat (21) and is used to monitor the passage of the propellant charge (91), and the controller is used to receive a detection signal sent by the photoelectric sensor (22) and send a telescopic instruction to the telescopic guide hopper (8).

8. The propellant charge screening device according to claim 7, characterized in that: The conveying track (2) is also provided with a lifting blocker (9) electrically connected to the controller. The lifting blocker (9) is located between the lifting material limiting seat (21) and the feeding end of the conveying track (2). The lifting blocker (9) is electrically connected to the controller and is used to receive a blocking signal from the controller and move downward to cooperate with the conveying track (2) to block the drug column (91).

9. The propellant charge screening device according to claim 8, characterized in that: A waste box (81) is also provided on one side of the receiving box (3); the discharge end of the conveying track (2) is arranged higher than the upper edge of the receiving box (3); and the telescopic guide hopper (8) is used to receive the drug column (91) on the conveying track (2) and guide the drug column (91) into the waste box (81).

10. The propellant charge screening device according to claim 9, characterized in that: The vibration plate (1), the material receiving box (3) and the waste box (81) are all made of copper.

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