Transfer hopper butt-joint discharging device and using method thereof

Abstract

The transfer hopper butt-joint discharging device comprises an upper support and a lower support which are connected together through a butt-joint assembly, and a transfer hopper, a conical discharging valve and a discharging opening are sequentially arranged in a cavity formed in the upper support and the lower support from top to bottom; the conical discharging valve is arranged at the bottom of the transfer hopper and comprises a valve body, a jacking air cylinder fixedly arranged in the valve body and a tip cone connected with the jacking air cylinder and extending into the transfer hopper, a valve body air inlet communicated with a pneumatic component of the jacking air cylinder is formed in one end of the valve body, and the tip cone ascends to form a discharging channel after the jacking air cylinder is ventilated. The valve body blanking requirement is met; the butt joint assembly meets the requirement for conveying an air source to the air inlet of the valve body. The conveying and discharging requirements of powder with different free-flowing properties are met, the problem of powder residues after discharging is solved, and the good sealing performance can be achieved in the transferring process of the transferring hopper through the butt-joint discharging method.

Description

Technical Field

[0001] The invention relates to the field of ultrafine powder feeding in weapon and ammunition warhead charges and engine charges, including automatic feeding control of ultrafine explosives, ultrafine ammonium perchlorate and other powders, and specifically to a transfer hopper docking and unloading device and a use method thereof. Background Art

[0002] In the field of automatic feeding of ultrafine powders in the preparation of PBX casting explosives in warhead charges and composite solid propellants in engine charges, ultrafine explosives, ultrafine ammonium perchlorate and other powders, such as 120 mesh octochrome, 5 types of hexachlorobenzene, ultrafine ammonium perchlorate and other powder materials are increasingly used. The main function of ultrafine explosives is to carry out particle grading with coarse-grained explosives, thereby reducing the viscosity of high-solid content mixed explosive slurry, ensuring the fluidity of the slurry, and meeting the needs of casting charging process. The impact sensitivity of octochrome in PBX casting explosives is 100%, the friction sensitivity is 100%, and the impact sensitivity of hexachlorobenzene is 80±8%, and the friction sensitivity is 76±8%. The sensitivity is relatively high, and the safety risk of the production process is high. Due to the high sensitivity and poor dispersion of explosives in the process of ultrafine explosive feeding, the explosive particles are easy to adhere and agglomerate in the hopper and pipeline, and it is difficult to realize automatic transportation of explosives. In particular, static electricity and dust are easily generated during the transportation of explosives, which brings safety risks. At present, in most cases, dangerous operations such as loading, transporting and adding explosives still need to be performed directly by humans. Therefore, it is urgent to break through the automatic loading technology of ultra-fine explosives, realize unmanned production process on site, master the technology of automated production process equipment, and improve the inherent safety of the production site. Powder feeding has the characteristics of large conveying volume, high degree of batching, and easy accumulation of powder on the wall. In addition, the poor sealing of docking and unloading in the current feeding process is a common technical problem. It is necessary to consider the structure to ensure that the unloading process is smooth and the residual rate of powder unloading is reduced, and on this basis, ensure that the environment in which the powder is located has good sealing. Summary of the invention

[0003] In order to meet the above technical requirements, the purpose of the present invention is to provide a transfer hopper docking unloading device, which can not only ensure a smooth unloading process and reduce the powder unloading residual rate from a structural aspect, but also ensure that the environment in which the powder is located has good sealing properties on this basis.

[0004] Another object of the present invention is to provide a method for using a transfer hopper to dock a feeding device.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a transfer hopper docking and unloading device, comprising an upper bracket and a lower bracket connected together by a docking assembly, the transfer hopper, a conical unloading valve and a unloading port are arranged in the cavity formed inside the upper bracket and the lower bracket from top to bottom in sequence; the conical unloading valve is arranged at the bottom of the transfer hopper, comprising a valve body, a lifting cylinder fixedly arranged inside the valve body and a top cone connected to the lifting cylinder and extending into the interior of the transfer hopper, a valve body air inlet connected to the pneumatic components of the lifting cylinder is provided at one end of the valve body, and after the lifting cylinder is ventilated, the top cone rises to form a unloading channel, meeting the unloading requirements of the valve body; the docking assembly meets the requirement of delivering air source to the valve body air inlet.

[0006] Furthermore, the outer wall of the transfer hopper is provided with a plurality of air vibrations.

[0007] An anti-static sealing strip is provided at the contact point between the edge of the top cone and the valve body.

[0008] The outside of the lifting cylinder is covered with antistatic cloth.

[0009] The top cone is connected to the telescopic end of the lifting cylinder through a connecting block.

[0010] The docking assembly includes a docking plug arranged at the bottom of the upper bracket and a docking socket arranged at the top of the lower bracket. The docking plug and the docking socket are pressed and connected under the action of gravity, and the upper part of the docking plug is connected to the air inlet of the valve body through the hopper air outlet channel and the air outlet pipe in sequence, and the lower part of the docking socket is connected to the lower bracket air inlet channel and the air inlet pipe in sequence, and the air inlet pipe is connected to an external air source.

[0011] The air outlet pipe is arranged along the vertical direction of the four legs of the upper bracket, and the air inlet pipe is arranged along the vertical direction of the four legs of the lower bracket.

[0012] The method for using the transfer hopper docking unloading device comprises the following steps: 1) The docking components on the upper bracket and the lower bracket are ready for docking; 2) The docking plug and the docking socket in the docking assembly are pressed against each other, and the docking plug and the docking socket are ventilated and connected under the action of gravity; 3) The external air source passes through the air inlet pipe, the lower bracket air inlet channel, the docking socket, the docking plug, the hopper air outlet channel, the air outlet pipe and the valve body air inlet in sequence, and enters the pneumatic components through the valve body air inlet to achieve ventilation state; 4) The lifting cylinder in the conical discharge valve is controlled by pneumatic components and lifts up in the ventilation state, pushing the top cone out of the valve body to form a discharge channel; 5) Powder is discharged by gravity and pneumatic vibration is turned on to assist in discharge.

[0013] The transfer hopper in the present invention is used to carry powders of different fluidity, has a high degree of batching, and its inner wall is mirror-polished. The unloading process has the characteristics of preventing powder residue and sticking to the edge, and the powder residue can be further reduced in the unloading process with the help of air vibration.

[0014] The conical discharge valve in the present invention is installed at the bottom of the transfer hopper, the edge of the valve body adopts an anti-static sealing design, and a large-thrust lifting cylinder is installed inside the valve body. The lifting cylinder retracts when not ventilated, and the conical discharge valve is tightly closed to prevent the powder from scattering during transportation; in the ventilated state, the lifting cylinder can lift 1T of bearing capacity, and push out the top cone to form a discharge channel for powder discharge.

[0015] The docking plug and the docking socket in the docking assembly of the present invention are installed on the four feet of the upper bracket, and the docking socket is installed on the top of the lower bracket. In the undocking state, they remain closed and isolate the external air source; after the docking is completed, the docking components are pressed against each other, and the docking plug and the docking socket are ventilated and connected under the action of gravity.

[0016] The beneficial effects of the present invention are: meeting the requirements for conveying and unloading powders with different fluidity, solving the problem of powder residue after unloading, and the docking unloading method can achieve good sealing in the transfer hopper transfer process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The structure and technical features of the present invention are further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the docking assembly in the present invention.

[0020] Figure 3 It is a schematic diagram of gas source delivery after the docking components in the present invention are docked.

[0021] Figure 4 It is a schematic structural diagram of the closed conical discharge valve in the present invention.

[0022] Figure 5 It is a structural schematic diagram of the cone discharge valve in the present invention being opened.

[0023] Attached Figure 1-5 In the figure, 1. transfer hopper, 2. conical discharge valve, 3. lifting cylinder, 4. gas vibration, 5. docking assembly, 6. air outlet pipe, 7. air inlet pipe, 8. upper bracket, 9. hopper air outlet channel, 10. docking plug, 11. lower bracket air inlet channel, 12. docking socket, 13. top cone, 14. connecting block, 15. antistatic sealing strip, 16. valve body air inlet, 17. antistatic cloth, 18. discharge channel, 19. lower bracket, 20. discharge port, 21. valve body. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is described in detail with reference to a specific embodiment, but the embodiment does not represent all embodiments of the present invention. All embodiments performed by those skilled in the art without creative work should fall within the protection scope of the present invention.

[0025] Attached Figure 1-5 An embodiment of the present invention discloses a transfer hopper docking and unloading device, comprising an upper bracket 8 and a lower bracket connected together by a docking assembly 5, wherein a transfer hopper 1, a conical unloading valve 2 and a unloading port 20 are sequentially arranged from top to bottom in the cavity formed inside the upper bracket 8 and the lower bracket; the conical unloading valve 2 is arranged at the bottom of the transfer hopper 1, comprising a valve body 21, a lifting cylinder 3 fixed inside the valve body 21, and a top cone 13 connected to the lifting cylinder 3 and extending into the transfer hopper 1, the top cone is connected to the telescopic end of the lifting cylinder through a connecting block, and a valve body air inlet 16 connected to the pneumatic components of the lifting cylinder 3 is arranged at one end of the valve body 21, and after the lifting cylinder 3 is ventilated, the top cone 13 rises to form a unloading channel 18, which meets the valve body unloading requirements.

[0026] The outer wall of the transfer hopper 1 is provided with a plurality of air vibrators 4 to assist in unloading of materials.

[0027] The outside of the lifting cylinder 3 is covered with an anti-static cloth 17 to prevent static electricity from being generated between the lifting cylinder and the lifting cylinder during material unloading, thereby affecting material unloading.

[0028] The docking assembly 5 is used to deliver air source to the air inlet 16 of the valve body. The docking assembly 5 includes a docking plug 10 arranged at the bottom of the upper bracket 8 and a docking socket 12 arranged at the top of the lower bracket 19. The docking plug 10 and the docking socket 12 are pressed and connected under the action of gravity, and the upper part of the docking plug 10 is connected to the air inlet 16 of the valve body through the hopper air outlet channel 9 and the air outlet pipe 6 in sequence, and the lower part of the docking socket 12 is connected to the lower bracket air inlet channel 11 and the air inlet pipe 7 in sequence, and the air inlet pipe 7 is connected to the external air source. The air outlet pipe 9 is arranged in the vertical direction along the four legs of the upper bracket 8, and the air inlet pipe 7 is arranged in the vertical direction along the four legs of the lower bracket 19.

[0029] The conical discharge valve 2 is installed at the bottom of the transfer hopper 1. The top of the valve body adopts a top cone 2 design to reduce the contact area between the top and the powder. The top cone 13 is connected to the lifting cylinder 3 by a connecting block 14 inside. An anti-static sealing strip 15 is provided at the contact between the edge of the top cone 13 and the valve body 21 to play a sealing role. Its sealing effect has been confirmed in many fields. A large-thrust lifting cylinder 3 is installed inside the valve body. The lifting cylinder 3 retracts when not ventilated, and the conical discharge valve 2 is tightly closed to prevent the powder from scattering during transportation; in the ventilated state, the lifting cylinder can lift 1T of bearing capacity, and the valve body is opened for powder discharge.

[0030] The docking component 5 is divided into a docking plug 10 and a docking socket 12. The docking plug 10 is installed on the four feet of the transfer hopper 1 and is connected to the hopper air outlet channel 9. The docking socket 12 is installed on the lower bracket and is connected to the lower bracket air inlet channel 11. It remains closed and isolates the external air source in the un-docked state; after the docking is completed, the docking components 5 are pressed against each other, and the docking plug 10 presses the docking socket 12 out of the vent under the action of gravity; after the air source is connected, it is connected by the air inlet pipe 7, and the hopper air outlet channel 9 and the air outlet pipe 6 are connected via the docking component 5. The air outlet pipe 6 is connected to the valve body air inlet 16, and the overall ventilation process of the system is completed.

[0031] After ventilation is completed, the lifting cylinder 3 lifts up the top cone 13 to form a feeding channel 18 between the transfer hopper 1, and the powder is fed by gravity. The lifting cylinder 3 and the powder are physically isolated by anti-static cloth 17. The air vibrator 4 is turned on to transmit the vibration to the inner wall of the hopper to ensure that there is no wall sticking phenomenon during the powder feeding process, further reducing the powder residue rate.

[0032] The embodiment of the present invention completes the work as follows: the docking components on the upper bracket and the lower bracket are ready to dock; the docking plug and the docking socket in the docking component are pressed against each other, and the docking plug and the docking socket are ventilated and connected under the action of gravity; the external air source passes through the air inlet pipe, the lower bracket air inlet channel, the docking socket, the docking plug, the hopper air outlet channel, the air outlet pipe and the valve body air inlet in sequence, and enters the pneumatic components through the valve body air inlet to reach a ventilation state; the lifting cylinder in the conical discharge valve is controlled by the pneumatic components and lifts in the ventilation state to push the top cone out of the valve body to form a discharge channel; the powder is discharged by gravity and air vibration is turned on to assist in discharge.

[0033] A transfer hopper docking unloading method proposed in the present invention can achieve good powder unloading and sealing after debugging and actual use, with significant overall effect, and plays a good role in the research of the powder unloading field.

Claims

1. A transfer hopper docking unloading device, comprising an upper bracket and a lower bracket connected together by a docking assembly, characterized in that: A transfer hopper, a conical discharge valve and a discharge port are arranged in sequence from top to bottom in the cavity formed inside the upper bracket and the lower bracket; the conical discharge valve is arranged at the bottom of the transfer hopper, comprising a valve body, a lifting cylinder fixed inside the valve body and a top cone connected to the lifting cylinder and extending into the transfer hopper, a valve body air inlet connected to the pneumatic components of the lifting cylinder is arranged at one end of the valve body, and after the lifting cylinder is ventilated, the top cone rises to form a discharge channel, meeting the valve body discharge requirements; the docking assembly meets the requirement of delivering air source to the valve body air inlet.

2. The transfer hopper docking and unloading device according to claim 1 is characterized in that: The outer wall of the transfer hopper is provided with a plurality of air vibrations.

3. The transfer hopper docking and unloading device according to claim 1 is characterized in that: An anti-static sealing strip is provided at the contact point between the edge of the top cone and the valve body.

4. The transfer hopper docking and unloading device according to claim 1, characterized in that: The outside of the lifting cylinder is covered with antistatic cloth.

5. The transfer hopper docking and unloading device according to claim 1, characterized in that: The top cone is connected to the telescopic end of the lifting cylinder through a connecting block.

6. The transfer hopper docking and unloading device according to claim 1, characterized in that: The docking assembly includes a docking plug arranged at the bottom of the upper bracket and a docking socket arranged at the top of the lower bracket. The docking plug and the docking socket are pressed and connected under the action of gravity, and the upper part of the docking plug is connected to the air inlet of the valve body through the hopper air outlet channel and the air outlet pipe in sequence, and the lower part of the docking socket is connected to the lower bracket air inlet channel and the air inlet pipe in sequence, and the air inlet pipe is connected to an external air source.

7. The transfer hopper docking and unloading device according to claim 1, characterized in that: The air outlet pipe is arranged along the vertical direction of the four legs of the upper bracket, and the air inlet pipe is arranged along the vertical direction of the four legs of the lower bracket.

8. The method for using the transfer hopper docking and unloading device according to claim 1, characterized in that: The method for using the transfer hopper docking unloading device comprises the following steps: 1) The docking components on the upper bracket and the lower bracket are ready for docking; 2) The docking plug and the docking socket in the docking assembly are pressed against each other, and the docking plug and the docking socket are ventilated and connected under the action of gravity; 3) The external air source passes through the air inlet pipe, the lower bracket air inlet channel, the docking socket, the docking plug, the hopper air outlet channel, the air outlet pipe and the valve body air inlet in sequence, and enters the pneumatic components through the valve body air inlet to achieve ventilation state; 4) The lifting cylinder in the conical discharge valve is controlled by pneumatic components and lifts up in the ventilation state, pushing the top cone out of the valve body to form a discharge channel; 5) Powder is discharged by gravity and pneumatic vibration is turned on to assist in discharge.

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