Leak-proof emulsion explosive sealing conveying device

Abstract

This utility model discloses a leak-proof emulsion explosive sealing and conveying device, including a conveying shell, with a conveying motor installed on the outer side of the conveying shell. This utility model, through "segmented connection of the conveying shell with an outer flange" and "telescopic cross shaft + double flange docking spiral conveying shaft," disassembles the entire unit into multiple independent units. Each unit can be transported by ordinary freight vehicles without special oversized transport approval, greatly reducing transportation costs. This is particularly suitable for mining workshops with limited road conditions. Furthermore, each unit can be moved and positioned manually with a small forklift, eliminating the need for large lifting equipment and significantly shortening installation time. Finally, when the inner wall of a certain section of the conveying shell is worn, or the blades of a certain section of the spiral conveying shaft are damaged, only the outer flange bolts of the corresponding unit (shell disassembly) and the connecting bolts between the fixed flange and the movable flange (shaft disassembly) need to be removed to replace the damaged unit individually, reducing maintenance time and losses.

Description

Technical Field

[0001] This utility model relates to the technical field of sealed conveying devices, and more specifically, to a leak-proof sealed conveying device for emulsion explosives. Background Technology

[0002] Emulsion explosives, as an important category of civilian explosives, are widely used in mining, water conservancy projects, building demolition and other fields. Their production and transportation must strictly comply with regulations and standards. In the emulsion explosive production line, the screw conveyor is the core equipment connecting the various processes of emulsion explosive production. Its structural design directly determines the safety of transportation and the continuity of production. Currently, most mainstream emulsion explosive conveying devices in the industry adopt an integral cavity + integrated screw shaft. This type of structure has exposed some technical defects in practical applications.

[0003] The existing integral conveying chambers are mostly 5-10m long. On the one hand, this requires special large vehicles for transportation and is subject to height and width restrictions by bridges and tunnels, making it extremely difficult to transport equipment to remote mining workshops. On the other hand, multiple cranes are required for hoisting during installation, and the integral chamber is prone to bending deformation due to its own weight or uneven hoisting force, resulting in uneven gaps between the inner wall of the chamber and the spiral blades, which affects the safety of subsequent emulsion explosive transportation.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] (a) Technical problems to be solved To address the issues raised in the appeal, this utility model provides a leak-proof emulsion explosive sealing and conveying device, thereby resolving the problems mentioned in the background art.

[0006] (II) Technical Solution To address the aforementioned problems, the specific technical solution adopted by this utility model is as follows: A leak-proof emulsion explosive sealing and conveying device includes a conveying housing. A fixed base is installed inside the conveying housing via a fixed column. A spiral conveying shaft is installed between the fixed base and the conveying housing via a sealed bearing. A conveying motor is installed at the end of the spiral conveying shaft and is mounted on the outer side of the conveying housing. Conveying blades are installed on the surface of the spiral conveying shaft. A cross groove is formed on the side surface of the spiral conveying shaft, and a telescopic cross shaft is slidably connected inside the cross groove. A movable flange is installed at the end of the telescopic shaft and is fixed to a fixed flange by bolts. The fixed flange is installed at the end adjacent to the spiral conveying shaft. An outer flange is installed on the surface of the conveying housing and is fixed to the adjacent outer flange by bolts.

[0007] Furthermore, sealing rings are provided between adjacent outer flanges, between fixed flanges and movable flanges, and on the side surface of the fixed seat, and the sealing rings are made of oil-resistant nitrile rubber.

[0008] Furthermore, the inner wall of the conveying housing is provided with a polytetrafluoroethylene anti-stick coating.

[0009] Furthermore, the edge of the conveying blade is provided with an elastic scraper, and the elastic scraper is in contact with the inner wall of the conveying housing, and the material of the elastic scraper is antistatic polyurethane.

[0010] Furthermore, the conveying housing, bolt conveying shaft, conveying blade, fixed seat, fixed column, telescopic cross shaft, first flange and second flange are all made of 304 stainless steel, and the surfaces of each component are passivated.

[0011] Furthermore, a support base is installed on the lower surface of the conveying housing, and a movable wheel is fixed to the lower surface of the support base by bolts, and the movable wheel is equipped with a pedal-type locking device.

[0012] Furthermore, an integrated controller is mounted on the side surface of the delivery housing via a mounting bracket.

[0013] (III) Beneficial Effects Compared with the prior art, this utility model provides a leak-proof emulsion explosive sealing and conveying device, which has the following beneficial effects: This invention utilizes a "segmented connection of the outer flange conveyor housing" and a "telescopic cross shaft + double flange docking spiral conveyor shaft" to disassemble the entire unit into multiple independent units. Each unit can be transported by ordinary freight vehicles without special oversized transport approval, greatly reducing transportation costs. This is especially suitable for mining workshops with limited road conditions. Furthermore, each unit can be moved and positioned manually with the assistance of a small forklift, eliminating the need for large lifting equipment and significantly shortening installation time. Finally, when the inner wall of a certain section of the conveyor housing is worn or the blades of a certain section of the spiral conveyor shaft are damaged, only the outer flange bolts of the corresponding unit (housing disassembly) and the connecting bolts between the fixed flange and the movable flange (shaft disassembly) need to be removed to replace the damaged unit individually, reducing maintenance time and maintenance losses. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1This is a schematic diagram of the structure of the leak-proof emulsion explosive sealing and conveying device proposed in this utility model; Figure 2 This is a schematic diagram of the connection structure of the cross telescopic shaft of this utility model; Figure 3 This is a schematic diagram of the connection structure of the fixing base of this utility model.

[0016] In the picture: 1. Conveyor housing; 2. Screw conveyor shaft; 3. Conveyor blades; 4. Conveyor motor; 5. Fixed base; 6. Fixed column; 7. Telescopic cross shaft; 8. Outer flange; 9. Fixed flange; 10. Moving flange; 11. Support base; 12. Moving wheels; 13. Sealing ring; 14. PTFE anti-stick coating; 15. Elastic scraper; 16. Integrated controller. Detailed Implementation

[0017] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0018] According to an embodiment of the present invention, a leak-proof emulsion explosive sealing and conveying device is provided.

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-3 As shown, the leak-proof emulsion explosive sealing and conveying device according to an embodiment of the present invention includes a conveying housing 1. A fixed seat 5 is installed inside the conveying housing 1 through a fixed column 6. A spiral conveying shaft 2 is installed between the fixed seat 5 and the conveying housing 1 through a sealed bearing. A conveying motor 4 is installed at the end of the spiral conveying shaft 2 and is installed on the outer side of the conveying housing 1. Conveying blades 3 are installed on the surface of the spiral conveying shaft 2. A cross groove is opened on the side surface of the spiral conveying shaft 2. A telescopic cross shaft 7 is slidably connected inside the cross groove. A movable flange 10 is installed at the end of the telescopic shaft. The movable flange 10 is fixed to a fixed flange 9 by bolts. The fixed flange is installed at the end of an adjacent spiral conveying shaft 2. An outer flange 8 is installed on the surface of the conveying housing 1. Adjacent outer flanges 8 are fixed by bolts.

[0020] In one embodiment, the entire unit is divided into multiple independent units by connecting the outer flange 8 segments of the conveyor housing 1 and the telescopic cross shaft 7 with the double flange connecting spiral conveyor shaft 2. Each segment can be transported by ordinary freight vehicles without special oversized transport approval, greatly reducing transportation costs. This is especially suitable for mining workshops with limited road conditions. Secondly, each segment can be moved and positioned by manpower with the help of a small forklift, without the need for large lifting equipment, which greatly shortens the installation time. Finally, when the inner wall of a certain segment of the conveyor housing 1 is worn or the blades of a certain segment of the spiral conveyor shaft 2 are damaged, it is only necessary to remove the bolts of the outer flange 8 (housing disassembly) and the connecting bolts of the fixed flange 9 and the movable flange 10 (shaft disassembly) of the corresponding unit to replace the damaged unit individually, reducing maintenance time and maintenance losses.

[0021] Specifically, sealing rings 13 are provided between adjacent outer flanges 8, between fixed flanges 9 and movable flanges 10, and on the side surface of fixed seat 5, and the sealing rings 13 are made of oil-resistant nitrile rubber.

[0022] In one embodiment, it possesses excellent oil resistance and temperature resistance, can resist the swelling of oil-phase materials, and prevents leakage caused by material failure of the seal.

[0023] Specifically, the inner wall of the conveying housing 1 is provided with a polytetrafluoroethylene anti-stick coating 14.

[0024] In one embodiment, the "low surface energy, non-stick colloid" properties of polytetrafluoroethylene are utilized to prevent emulsion explosives from adhering to the inner wall and forming residues due to stickiness.

[0025] Specifically, the edge of the conveying blade 3 is provided with an elastic scraper 15, and the elastic scraper 15 is attached to the inner wall of the conveying housing 1, and the material of the elastic scraper 15 is antistatic polyurethane.

[0026] In one embodiment, the elastic scraper 15 (made of antistatic polyurethane) fits tightly against the inner wall and scrapes off the material adhering to the inner wall in real time as the blade rotates—this reduces "hidden leakage" caused by residue and avoids localized high temperatures caused by friction between the residual material and the shell, forming a dual radial protection of "anti-sticking + scraping".

[0027] Specifically, the materials of the conveyor housing 1, bolt conveyor shaft, conveyor blade 3, fixed seat 5, fixed column 6, telescopic cross shaft 7, first flange and second flange are all 304 stainless steel, and the surfaces of each component are passivated.

[0028] In one embodiment, its high strength characteristics can withstand the internal pressure during the delivery of emulsion explosives, and the surface is passivated to form a dense oxide film, which on the one hand reduces the friction coefficient between the blades and the shell and materials, and on the other hand resists the slight corrosion of the ammonium nitrate component in the emulsion explosives, thus extending the service life of the equipment.

[0029] Specifically, a support base 11 is installed on the lower surface of the conveyor housing 1, and a movable wheel 12 is fixed to the lower surface of the support base 11 by bolts, and the movable wheel 12 is equipped with a pedal-type locking device.

[0030] In one embodiment, installation does not require a large crane for hoisting; the position can be adjusted manually to accommodate interference restrictions from columns and equipment within the workshop.

[0031] Specifically, an integrated controller 16 is mounted on the side surface of the delivery housing 1 via a mounting bracket.

[0032] In one embodiment, it is used for unified control of the sealing conveying device.

[0033] Working principle: The operator sets the conveying parameters (such as speed and conveying capacity) through the integrated controller 16 on the side surface of the conveying shell 1. The controller sends a command to the conveying motor 4 to start the motor. The motor output torque is transmitted to the screw conveying shaft 2, which drives the shaft and the conveying blades 3 on the surface to rotate synchronously. The emulsion explosive enters the cavity from the feed end (expandable feed hopper structure) of the conveying shell 1. The rotating conveying blades 3 push the material along the cavity axis towards the discharge end through the thrust of the spiral surface. Since the elastic scraper 15 (antistatic polyurethane material) on the edge of the blade is closely attached to the inner wall of the shell, the scraper can rotate synchronously with the blade. On the one hand, it avoids the material from sticking to the inner wall due to stickiness. On the other hand, it assists in pushing the material and ensures that the material is not stuck. Because the device adopts a split structure, the adjacent screw conveying shafts 2 are connected by "telescopic cross shaft 7 + moving flange 10 - fixed flange 9". At the same time, the segmented conveying shell 1 is sealed and connected by the outer flange 8 to form a continuous closed conveying channel. The material is seamlessly pushed in the segmented cavity until it enters the downstream equipment from the discharge end.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[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, improvements, etc., 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 leak-proof emulsion explosive sealed delivery device comprising a delivery housing (1), characterized in that, The conveying housing (1) is equipped with a fixed seat (5) through a fixed column (6). A screw conveying shaft (2) is installed between the fixed seat (5) and the conveying housing (1) through a sealed bearing. A conveying motor (4) is installed at the end of the screw conveying shaft (2) and the conveying motor (4) is installed on the outer side of the conveying housing (1). A conveying blade (3) is installed on the surface of the screw conveying shaft (2). A cross groove is opened on the side surface of the screw conveying shaft (2), and a telescopic cross shaft (7) is slidably connected inside the cross groove. A movable flange (10) is installed at the end of the telescopic shaft. The movable flange (10) is fixed to the fixed flange (9) by bolts. The fixed flange is installed at the end of the adjacent screw conveying shaft (2). An outer flange (8) is installed on the surface of the conveying housing (1), and the adjacent outer flange (8) is fixed by bolts.

2. The leak resistant emulsion explosive sealed delivery device of claim 1, wherein, A sealing ring (13) is provided between adjacent outer flanges (8), between fixed flanges (9) and movable flanges (10), and on the side surface of the fixed seat (5), and the sealing ring (13) is made of oil-resistant nitrile rubber.

3. The leak resistant emulsion explosive sealed delivery device of claim 2, wherein, The inner wall of the conveying housing (1) is provided with a polytetrafluoroethylene anti-stick coating (14).

4. The leak-proof emulsion explosive sealing and conveying device according to claim 3, characterized in that, The edge of the conveying blade (3) is provided with an elastic scraper (15), and the elastic scraper (15) is attached to the inner wall of the conveying housing (1), and the material of the elastic scraper (15) is antistatic polyurethane.

5. The leak resistant emulsion explosive sealed delivery device of claim 4, wherein, The conveying housing (1), bolt conveying shaft, conveying blade (3), fixed seat (5), fixed column (6), telescopic cross shaft (7), first flange and second flange are all made of 304 stainless steel, and the surfaces of each component are passivated.

6. The leak resistant emulsion explosive sealed delivery device of claim 5, wherein, The lower surface of the conveying housing (1) is equipped with a support base (11), and the lower surface of the support base (11) is fixed with a movable wheel (12) by bolts, and the movable wheel (12) is equipped with a pedal-type locking device.

7. The leak-proof emulsion explosive sealing and conveying device according to claim 6, characterized in that, An integrated controller (16) is mounted on the side surface of the delivery housing (1) via a mounting bracket.

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