Automatic powdery explosive feeding device

Abstract

The invention discloses an automatic feeding device for powdery explosives. Comprising a feeding supporting plate, a feeding hopper fixed to the lower portion of the feeding supporting plate, a guide sleeve with an opening connected to the middle of the feeding supporting plate, a discharging rod inserted into an inner hole of the guide sleeve, a valve body fixed to the lower end of the discharging rod and a discharging rod control assembly used for driving the discharging rod to move up and down. The discharging rod control assembly comprises a driving nut connected to the side wall of the upper end of the discharging rod in a threaded mode, a driving motor arranged above the feeding supporting plate and a worm and gear mechanism connected between the driving motor and the driving nut. The driving motor drives the driving nut to rotate through a worm and gear mechanism, the discharging rod is controlled to move up and down, and then the valve body is controlled to open or close a discharging hole of the feeding hopper. According to the automatic feeding device, unmanned operation in dangerous places is achieved.

Description

Technical Field

[0001] The invention relates to an automatic feeding device for powdered explosives, belonging to the technical field of dangerous goods processing. Background Art

[0002] In the production process of a certain explosive, it is necessary to evenly add a high-sensitivity, high-energy powdered explosive into a reactor filled with liquid reaction materials. The explosive and the liquid reaction materials react at a certain reaction temperature and stirring speed to produce a qualified finished explosive.

[0003] The original method of adding explosives is that the operator manually adds the explosives on site. Before adding the explosives, the operator first adds a certain amount of liquid reaction materials into the reactor according to the process requirements, and then controls the reactor temperature and stirring speed within a certain process range. After the conditions for adding explosives are met, the operator manually adds the explosives on site.

[0004] This work method of manually adding explosives on site by operators poses a great safety risk. During the operator's addition process, the explosives will impact the stirring slurry, and at the same time, the explosives will generate strong static electricity during the flow process. Powdered explosives have high impact sensitivity, high static sensitivity, and high energy. Therefore, manually adding high-sensitivity and high-energy explosives to the reactor is extremely dangerous. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic powder explosive feeding device, which can automatically add powder solid explosive into a reaction kettle and realize remote automatic control of the feeding process and human-machine isolation operation.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] The present invention discloses an automatic feeding device for powdered explosives, comprising a feeding support plate, a feeding hopper fixed below the feeding support plate, a guide sleeve with an opening connected to the middle of the feeding support plate, a discharge rod inserted into the inner hole of the guide sleeve, a valve body fixed at the lower end of the discharge rod, and a discharge rod control assembly for driving the discharge rod to move up and down;

[0008] The upper end side wall of the discharge rod is processed with a connecting thread, and the lower end of the discharge rod is provided with a valve body with a spherical structure;

[0009] The discharge rod control assembly includes a drive nut threadedly connected to the upper end side wall of the discharge rod, a drive motor arranged above the feeding support plate, and a worm gear mechanism connected between the drive motor and the drive nut; the drive motor drives the drive nut to rotate through the worm gear mechanism, controls the discharge rod to move up and down, and then controls the valve body to open or close the discharge hole of the feeding funnel.

[0010] An elastic sealing sleeve is installed between the lower end of the guide sleeve and the side wall of the discharge rod to prevent powdered explosive from entering the discharge rod control assembly and prevent safety risks caused by friction.

[0011] The inner wall of the feeding funnel is sprayed with a conductive coating, which can not only ensure that the material does not stick to the wall, but also realize the timely discharge of static electricity to prevent safety risks caused by static electricity.

[0012] The contact surface between the valve body and the feeding funnel is provided with a rubber layer, which not only ensures the airtightness of the sealing surface but also avoids hard contact with the material, thereby preventing safety risks caused by impact.

[0013] Working process

[0014] Before feeding, the driving motor drives the driving nut to rotate through the worm gear mechanism, controls the discharge rod to move downward, and then controls the valve body to block the discharge hole of the feeding funnel, and then puts the powdered explosive into the feeding funnel. During feeding, the driving motor drives the driving nut to rotate through the worm gear mechanism, controls the discharge rod to move upward, and then controls the valve body to clear the discharge hole of the feeding funnel, so that the powdered explosive is discharged downward from the annular gap between the discharge hole of the feeding funnel and the valve body.

[0015] Beneficial Effects

[0016] The automatic feeding device of the present invention has a simple structure and high safety, and realizes unmanned operation in dangerous places. The driving motor adopts a servo motor to accurately control the rotation angle displacement, and then accurately control the opening between the valve body and the feeding funnel, so that the feeding speed of the powdered explosive is uniform and controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the automatic feeding device of the present invention;

[0018] In the figure, 1-feeding support plate, 2-feeding funnel, 3-guide sleeve, 4-discharging rod, 5-valve body, 6-worm gear mechanism, 7-driving nut, 8-driving motor, 9-elastic sealing sleeve. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Example

[0021] like Figure 1As shown, an automatic feeding device for powdered explosives of the present invention comprises a feeding support plate 1, a feeding funnel 2 fixed below the feeding support plate 1, a guide sleeve 3 with an opening connected to the middle of the feeding support plate 1, a discharge rod 4 inserted into the inner hole of the guide sleeve 3, a valve body 5 fixed at the lower end of the discharge rod 4, and a discharge rod control assembly for driving the discharge rod 4 to move up and down;

[0022] The upper side wall of the discharge rod 4 is processed with a connecting thread, and the lower end of the discharge rod 4 is provided with a valve body 5 with a spherical structure;

[0023] The discharge rod control assembly includes a drive nut 7 threadedly connected to the upper end side wall of the discharge rod 4, a drive motor 8 arranged above the feeding support plate 1, and a worm gear mechanism 6 connected between the drive motor 8 and the drive nut 7; the drive motor 8 drives the drive nut 7 to rotate through the worm gear mechanism 6, controls the discharge rod 4 to move up and down, and then controls the valve body 5 to open or close the discharge hole of the feeding funnel 2.

[0024] An elastic sealing sleeve 9 is installed between the lower end of the guide sleeve 3 and the side wall of the discharge rod 4 to prevent powdered explosives from entering the discharge rod control assembly and prevent safety risks caused by friction.

[0025] The inner wall of the feeding funnel 2 is sprayed with a conductive coating, which can not only ensure that the material does not stick to the wall, but also realize the timely discharge of static electricity to prevent safety risks caused by static electricity.

[0026] The contact surface between the valve body 5 and the feeding funnel 2 is provided with a rubber layer, which not only ensures the airtightness of the sealing surface but also avoids hard contact with the material, thereby preventing safety risks caused by impact.

[0027] Working process

[0028] Before feeding, the driving motor 8 drives the driving nut 7 to rotate through the worm gear mechanism 6, controls the discharge rod 4 to move downward, and then controls the valve body 5 to block the discharge hole of the feeding funnel 2, and then puts the powdered explosive into the feeding funnel 2. During feeding, the driving motor 8 drives the driving nut 7 to rotate through the worm gear mechanism 6, controls the discharge rod 4 to move upward, and then controls the valve body 5 to clear the discharge hole of the feeding funnel 2, so that the powdered explosive is discharged downward from the annular gap between the discharge hole of the feeding funnel 2 and the valve body 5.

Claims

1. An automatic feeding device for powdered explosives, characterized in that: It includes a feeding support plate, a feeding funnel fixed under the feeding support plate, a guide sleeve with an opening connected to the middle of the feeding support plate, a discharge rod inserted into the inner hole of the guide sleeve, a valve body fixed at the lower end of the discharge rod, and a discharge rod control assembly for driving the discharge rod to move up and down; The upper end side wall of the discharge rod is processed with a connecting thread, and the lower end of the discharge rod is provided with a valve body with a spherical structure; The discharge rod control assembly includes a drive nut threadedly connected to the upper end side wall of the discharge rod, a drive motor arranged above the feeding support plate, and a worm gear mechanism connected between the drive motor and the drive nut; the drive motor drives the drive nut to rotate through the worm gear mechanism, controls the discharge rod to move up and down, and then controls the valve body to open or close the discharge hole of the feeding funnel.

2. The automatic powdered explosive feeding device according to claim 1, characterized in that: An elastic sealing sleeve is installed between the lower end of the guide sleeve and the side wall of the discharge rod.

3. The automatic feeding device for powdered explosive according to claim 1, characterized in that: The inner wall of the feeding funnel is sprayed with a conductive coating.

4. The automatic powdered explosive feeding device according to claim 1, characterized in that: A rubber layer is installed on the contact surface between the valve body and the feeding funnel.

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