A deagglomerator for energetic materials

Abstract

The utility model relates to the field of energetic material processing technology discloses a kind of block breaking and screening device of energetic material, including screening hopper, material receiving bin, the bottom of screening hopper is provided with screen, and there is broken block comb above screen, and material is stirred and broken and prevents screen from being blocked. Material receiving bin is provided below screen, and feeder is provided below the material receiving bin, and the horizontal feeding pipe of feeder is connected, and material receiving cup is provided below the end of horizontal feeding pipe, and the material receiving cup is directly supported on weighing module, the device integrates broken block, screening, conveying, closed material receiving and weighing, is automated, and can effectively suppress dust all the way, improves production efficiency and operating safety.

Description

Technical Field

[0001] This utility model relates to the field of energetic materials processing technology, and in particular to a fragmentation and screening device for the production of energetic materials. Background Technology

[0002] In the preparation of energetic materials such as gunpowder and propellants, the materials are prone to absorbing moisture and agglomerating, requiring crushing and screening to achieve specified particle size requirements. Existing technologies typically employ separate crushing and screening equipment, which suffers from problems such as long process flows, large equipment footprints, and numerous material transfer links. Energetic material dust poses an extremely high risk of combustion and explosion in exposed environments, and traditional equipment has failed to effectively suppress dust dispersion.

[0003] Furthermore, the collection and weighing of materials after screening currently relies heavily on manual receiving and transfer, which not only results in low measurement accuracy and efficiency but also increases the risk of personnel coming into direct contact with hazardous materials. Although some equipment with sealed functions exists, its structure is complex, and it still falls short in terms of breaking efficiency, anti-clogging, sealing of receiving and weighing, and degree of automation. Therefore, there is an urgent need for an integrated, automated breaking and screening device that can effectively suppress dust throughout the entire process. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an integrated and sealed energetic material breaking and screening device. This structure can achieve efficient crushing and screening of agglomerated materials and achieve effective sealing in the material receiving and weighing process, thereby ensuring production safety.

[0005] This utility model is achieved through the following solution: A fragmentation and screening device for energetic materials includes a screening hopper and a receiving bin disposed below it. A screen is installed at the bottom of the screening hopper, and a rotating shaft driven by a drive assembly is installed inside the hopper. Fragmentation combs are fixedly installed at the end of the rotating shaft, and the combs are positioned opposite the upper surface of the screen to agitate and crush the material and prevent screen clogging. The receiving bin is located below the screen, and a feeder is located below the receiving bin. The receiving bin is connected to a horizontal feed pipe of the feeder. A receiving cup is located at the end of the horizontal feed pipe, and the receiving cup is directly supported by a weighing module to achieve real-time and accurate weighing of the material.

[0006] Furthermore, the receiving hopper and the feeding pipe are connected by a flexible connecting pipe. This flexible connecting pipe can effectively isolate the vibration of the screening hopper and the receiving hopper, preventing the vibration from being transmitted to the feeder and the subsequent weighing module, thereby ensuring the accuracy of the weighing results.

[0007] Furthermore, a vertical drop pipe is connected to the end of the conveying channel of the feeding pipe. The vertical drop pipe guides the material to fall vertically, thus concentrating the material flow.

[0008] Furthermore, the receiving cup opening is equipped with a liftable cover, the center of which is fitted around the vertical discharge pipe. When material needs to be received, the cover lowers to form a relatively sealed space with the receiving cup opening; after material is received, the cover rises to make room for the removal of the receiving cup.

[0009] Furthermore, the cover plate has horizontally extending wing plates on both sides, which are connected to lifting cylinders symmetrically arranged on the frame; it has a first position that descends to seal the opening of the receiving cup and a second position that rises above the opening of the receiving cup. The cover plate can be driven to move between the first position that seals the opening of the receiving cup and the second position that is above the opening of the receiving cup.

[0010] Furthermore, the top of the vertical feed pipe is equipped with an openable and closable observation window. This facilitates observation of the material flow within the pipe and allows for manual intervention in case of blockage.

[0011] Furthermore, the top of the screening hopper is equipped with an angled feed port. The angled design helps guide the material and prevents dust from splashing upwards during feeding.

[0012] Furthermore, a support ring is fixed to the outer wall of the screening hopper. The support ring is connected to the frame via elastic support columns, and a high-frequency vibrator is installed on the support ring to drive the vibration of the screening hopper. The elastic support reduces or avoids vibration transmission to the frame, and the high-frequency vibrator not only assists in material screening but also effectively prevents material from adhering to and clogging the screen and hopper wall.

[0013] Furthermore, the crushing comb has a strip-shaped structure with evenly distributed raised teeth on its lower surface, and the tooth tips maintain an equidistant gap with the screen. This structure ensures effective crushing while avoiding rigid contact between the comb teeth and the screen, which could damage the equipment. The gap fit also scrapes off material adhering to the screen surface.

[0014] Furthermore, the receiving hopper has a conical structure with a large opening at the top and a small outlet at the bottom. The conical structure facilitates the collection and smooth descent of materials, preventing material from accumulating inside the hopper.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. The functions of crushing, screening, conveying, sealed receiving and weighing are integrated into one structure, which simplifies the process flow, reduces material transfer and manual intervention, and improves production efficiency and operational safety.

[0016] 2. The rotating crushing comb teeth and high-frequency vibration work together to achieve efficient crushing and screen clogging prevention.

[0017] 3. The liftable cover plate creates a relatively sealed environment at the material receiving port, eliminating the potential for dust from energetic materials to escape.

[0018] 4. The flexible connecting tube isolates vibration transmission, and the receiving cup is directly connected to the weighing module to ensure accurate dynamic receiving and weighing data. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the placement structure of the screening hopper of this utility model; Figure 4 This is a schematic diagram of the lifting cover plate of this utility model; Figure label: 101-Screening hopper, 102-Drive motor, 103-Rotating shaft, 104-Broken comb teeth, 105-Screen, 106-High frequency vibrator, 107-Support ring, 108-Elastic support column, 109-Inclined feeding port, 201-Receiving bin, 202-Flexible connecting pipe, 203-Feeder, 204-Horizontal feeding pipe, 301-Vertical dropping pipe, 301a-Observation window, 302-Cover plate, 302a-Wing plate, 303-Receiving cup, 304-Weighing module, 305-Lifting cylinder. Detailed Implementation

[0020] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0021] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0024] Example 1: like Figures 1-4As shown, a fragmentation and screening device for energetic materials is provided, with a frame providing support for the entire device. The screening hopper 101 is suspended from the frame by a support ring 107 fixed to its outer wall and multiple equally spaced elastic support columns 108 below the support ring 107. The elastic support columns 108 are preferably air springs. A high-frequency vibrator 106 is mounted on the support ring 107 and extends downwards through the top plate of the frame onto the frame crossbeam, driving the screening hopper 101 to generate high-frequency micro-amplitude vibrations.

[0025] The top of the screening hopper 101 is provided with an inclined feeding port 109. The drive motor 102 is fixed to the upper center of the screening hopper 101, and its drive rotating shaft 103 extends downward along the central axis of the screening hopper 101. A strip-shaped crushing comb 104 is fixed to the end of the rotating shaft 103, and the evenly distributed protruding teeth on its lower surface maintain a small and uniform gap with the upper surface of the screen 105.

[0026] Below the screen 105 is a conical receiving bin 201. The outlet of the receiving bin 201 is connected to the horizontal feeding pipe 204 of the feeder 203 via a flexible connecting pipe 202. The feeder 203 is preferably an explosion-proof vibrating feeder, which conveys the material along its horizontal feeding pipe by generating vibrations at a predetermined frequency. The end of the horizontal feeding pipe 204 is connected to a vertical discharge pipe 301, which has an opening facing downwards and an observation window 301a with a sealed cover at the top.

[0027] Below the opening of the discharge pipe 301 is a receiving cup, and the receiving cup 303 is placed on the weighing module 304.

[0028] A liftable cover plate 302 is fitted around the vertical discharge pipe 301, with a clearance fit between the central through hole of the cover plate 302 and the discharge pipe 301. Wings 302a on both sides of the cover plate 302 are connected to two lifting cylinders 305 mounted on the frame. The lifting cylinders 305 can drive the cover plate 302 to move between a first position sealing the opening of the receiving cup 303 and a predetermined second position. The contact force between the cover plate 302 and the opening of the receiving cup 303 is not introduced into the measurement value of the weighing module 304, ensuring the accuracy of the weighing data.

[0029] Work process: Material is fed into the screening hopper 101 through the inclined feed port 109. The equipment is started, and the drive motor 102 rotates the breaking comb 104 to cut and crush the agglomerated material. Simultaneously, the high-frequency vibrator 106 operates, fully dispersing the material and accelerating its passage through the screen 105. Material meeting the particle size requirements falls through the screen 105 into the receiving hopper 201, and then enters the horizontal feed pipe 204 via the flexible connecting pipe 202. The horizontal feed pipe 204 directionally conveys the material to the vertical discharge pipe 301.

[0030] During material receiving, the lifting cylinder 305 drives the cover plate 302 to descend, forming a relatively sealed space with the opening of the receiving cup 303. The material falls into the receiving cup 303 through the discharge pipe 301, and its weight is monitored in real time by the weighing module 304. When the preset conditions are met, the feeder 203 stops feeding, and the lifting cylinder 305 raises the cover plate 302, completing one work cycle.

[0031] How to use: 1. Material is fed into the screening hopper through the feeding port using manual or automatic feeding equipment; 2. After the equipment is started, the rotating motor drives the comb teeth to stir, thereby breaking up (dissolving) agglomerated materials; 3. The material accumulated in the screening hopper is dispersed by the high-frequency vibrator and broken up by the comb teeth. The high-frequency vibrator also has the function of assisting in material feeding.

[0032] 4. Small particles of material fall through the screen into the receiving hopper for buffering, while the material below is fed by the feeder into the receiving cup or receiving bucket.

[0033] 5. The receiving hopper and the horizontal feeding pipe are connected by a flexible pipe, and the feeder conveys the material forward through a certain vibration frequency.

[0034] 6. During material receiving, a lifting cylinder lowers the cover plate to create a relatively sealed receiving environment with the receiving cup or bucket. A weighing device is installed below to weigh the material in real time. This structure achieves sealed breaking and screening, preventing dust from escaping.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for breaking up and screening energetic materials, characterized in that: The device includes a screening hopper (101) and a receiving bin (201) located below the screening hopper (101). The bottom of the screening hopper (101) is provided with a screen (105), and a rotating shaft (103) driven by a drive assembly is provided inside the screen. A crushing comb (104) is fixedly installed at the end of the rotating shaft (103), and the crushing comb (104) is arranged opposite to the upper surface of the screen (105). The receiving bin (201) is located below the screen (105) of the screening hopper (101), and a feeder (203) is located below the receiving bin (201). The receiving bin (201) is connected to the horizontal feeding pipe (204) of the feeder (203), and a receiving cup (303) is located below the end of the horizontal feeding pipe (204). The receiving cup (303) is directly supported on the weighing module (304).

2. The device for breaking up and screening energetic materials as described in claim 1, characterized in that, The receiving bin (201) and the horizontal feeding pipe (204) are connected by a flexible connecting pipe (202).

3. The device for breaking up and screening energetic materials as described in claim 1, characterized in that, The horizontal feeding pipe (204) has a vertical dropping pipe (301) connected to the end of its conveying channel.

4. The device for breaking up and screening energetic materials as described in claim 3, characterized in that, The receiving cup (303) is provided with a liftable cover plate (302), and the center of the cover plate (302) is sleeved around the vertical discharge pipe (301).

5. The device for breaking up and screening energetic materials as described in claim 4, characterized in that, The cover plate (302) has horizontally extending wing plates (302a) on both sides, and the wing plates (302a) are connected to lifting cylinders (305) symmetrically arranged on the frame; it has a first position that descends to seal the opening of the receiving cup (303) and a second position that rises to be higher than the opening of the receiving cup (303).

6. The device for breaking up and screening energetic materials as described in claim 3, characterized in that, The top of the vertical feed tube (301) is provided with an openable and closable observation window (301a).

7. The device for breaking up and screening energetic materials as described in claim 1, characterized in that, The top of the screening hopper (101) is provided with an obliquely extending feed port.

8. The device for breaking up and screening energetic materials as described in claim 1, characterized in that, The outer wall of the screening bucket (101) is fixed with a support ring (107), the support ring (107) is connected to the frame through an elastic support column (108), and a high-frequency vibrator (106) for driving the screening bucket (101) to vibrate is installed on the support ring (107).

9. The device for breaking up and screening energetic materials as described in claim 1, characterized in that, The breaking comb (104) has a strip-shaped structure with protruding teeth evenly distributed on its lower surface, and the tooth tips maintain an equidistant gap with the screen (105).

10. The device for breaking up and screening energetic materials as described in claim 1, characterized in that, The receiving bin (201) has a conical structure with a large opening at the top and a small discharge port at the bottom.

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