Positive-pressure dense-phase pneumatic conveying device for calcium carbide dust materials
By designing a positive pressure dense phase pneumatic conveying device for calcium carbide dust materials, the heating box and anti-static hose are used for dust treatment and transportation, and the static electricity is eliminated through the grounding mechanism, the spark, explosion and equipment stability problems caused by the accumulation of calcium carbide dust are solved, and a safe, stable and efficient conveying effect is achieved.
Patent Information
- Application Number
- CN202422121931.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-30
AI Technical Summary
Calcium dust is prone to static electricity accumulation during the transportation process, resulting in an increase in the risk of sparks and explosions, affecting the stability of the equipment, and may lead to blockage of the conveying pipeline and workers' health risks.
A positive pressure-tight phase pneumatic conveying device for calcium carbide dust materials is designed, including a heating box, an anti-static hose and a grounding mechanism. The dust is heated through the heating box, and the anti-static hose transports the dust, and the static charge is exported through the grounding mechanism to avoid static accumulation.
It effectively avoids the accumulation of static electricity during the transportation process, reduces the risk of sparks and explosions, improves the operation stability of equipment, avoids blockage of conveying pipelines, and reduces the risk of workers inhaling dust.
Smart Images
Figure CN222989235U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of calcium carbide dust, and particularly relates to a positive pressure dense phase pneumatic conveying device for calcium carbide dust materials. Background Technique
[0002] Calcium carbide dust is mainly generated during the unloading of calcium carbide by transportation vehicles and the crushing of calcium carbide. Industrial calcium carbide is a mixture of substances such as calcium carbide, quicklime, and coke, which is prone to absorbing moisture in the air and weathering to produce acetylene gas and calcium hydroxide. There will be a large amount of dust in the calcium carbide storage warehouse. When the transportation vehicle enters the calcium carbide storage warehouse, due to the movement of the vehicle, the calcium carbide dust scattered on the ground will be lifted and dispersed into the space of the calcium carbide storage warehouse. When unloading calcium carbide, the calcium carbide will impact the ground dust and lift the dust.
[0003] Calcium carbide dust is a combustible substance. When it forms a dust cloud with a certain concentration in the air, if there is sufficient static charge accumulation, it may cause a spark, thereby causing an explosion. Electrostatic discharge may cause the calcium carbide dust to ignite, especially in an environment with oxygen, increasing the risk of fire. The accumulation of static charge may interfere with or damage the electronic equipment and control devices in the conveying system, resulting in unstable operation or failure of the equipment. At the same time, the charged dust is easy to adsorb other particulate matters in the air, which may cause the conveying pipeline to be blocked, affecting the conveying efficiency. And the static charge may make the dust more likely to suspend in the air, increasing the risk of inhalation by workers. Long-term exposure to calcium carbide dust may cause harm to the respiratory system. Content of the Utility Model
[0004] The purpose of the utility model is to provide a positive pressure dense phase pneumatic conveying device for calcium carbide dust materials to solve the problems put forward in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A positive pressure dense phase pneumatic conveying device for calcium carbide dust materials, including a heating box, and further including:
[0006] A through hole provided on the inner wall of the heating box, a heating sleeve is fixed on the inner wall of the through hole, an anti-static hose is arranged on the inner wall of the heating sleeve, one end of the anti-static hose is communicated with a high-pressure air pump, the bottom of the high-pressure air pump is fixed with a first bottom plate, the bottom of the heating box is fixed with a second bottom plate, a clamping mechanism for fixing the heating box is arranged on the inner wall of the second bottom plate, and a grounding mechanism for improving safety is arranged on the outer side of the anti-static hose;
[0007] A first funnel arranged on the top of the heating sleeve, a hydrolysis bin is fixed on the top of the first funnel, a second funnel is fixed on the top of the hydrolysis bin, control valves are arranged on the inner walls of the first funnel and the second funnel, and a calcium carbide bin is fixed on the top of the second funnel.
[0008] Preferably, the clamping mechanism includes two symmetrically arranged chutes formed on the inner wall of the second bottom plate. A first spring is fixed to the inner wall of the chute, and a clamping plate is fixed to one end of the first spring.
[0009] Preferably, the grounding mechanism includes a wire connected to the inner wall of the anti-static hose. A housing is sleeved on the outer side of the wire, and a sleeve is slidably connected to the outer side of the housing.
[0010] Preferably, a discharge cone is fixed to the bottom of the sleeve, and a notch is formed on the outer surface of the discharge cone.
[0011] Preferably, an empty groove is formed on the inner wall of the housing. A second spring is fixedly connected to the inner wall of the empty groove, and a latch is fixed to one end of the second spring. A clamping hole is formed in the inner wall of the sleeve, and the latch is clamped to the inner wall of the clamping hole.
[0012] Preferably, a feed pipe is connected to the top of the calcium carbide bin, and a first sealing cover is arranged at the top end of the feed pipe.
[0013] Preferably, a ventilation pipe is connected to the inner wall of the first funnel. A second sealing cover is arranged at the top end of the ventilation pipe, and an air inlet hole and an air outlet hole are respectively formed in the inner wall of the ventilation pipe.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] By arranging the grounding mechanism, the present utility model can effectively ground the anti-static hose for transporting calcium carbide dust, avoid the accumulation of static charges in the anti-static hose, prevent sparks from causing an explosion, reduce the risk of fire, and at the same time eliminate static charges, avoid interference or damage to electronic devices and control devices in the conveying system, improve the stability of equipment operation, effectively avoid blockage of the conveying pipeline, improve the conveying efficiency, and after the static charges are eliminated, avoid dust from suspending in the air and reduce the risk of workers inhaling. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural diagram of a preferred embodiment of the positive pressure dense phase pneumatic conveying device for calcium carbide dust material provided by the present utility model;
[0017] Figure 2 is a schematic structural diagram of the clamping mechanism provided by the present utility model;
[0018] Figure 3 is Figure 2 an enlarged structural diagram at A in
[0019] Figure 4 is a schematic structural diagram of the clamping mechanism provided by the present utility model;
[0020] Figure 5 Structural schematic diagram of the interior of the heating box provided by the present utility model;
[0021] Figure 6 is Figure 5 The enlarged structural schematic diagram at position B in [the figure].
[0022] In the figure: 1. Heating box; 2. Through hole; 3. Heating sleeve; 4. Anti-static hose; 5. High-pressure air pump; 6. First bottom plate; 7. Second bottom plate; 8. Clamping mechanism; 81. Slide groove; 82. First spring; 83. Clamping plate; 9. Grounding mechanism; 91. Conducting wire; 92. Outer shell; 93. Sleeve; 94. Discharge cone; 95. Notch; 96. Empty groove; 97. Second spring; 98. Pin; 99. Pin hole; 10. First funnel; 11. Hydrolysis bin; 12. Second funnel; 13. Control valve; 14. Calcium carbide bin; 15. Feed pipe; 16. First sealing cover; 17. Vent pipe; 18. Second sealing cover; 19. Air inlet hole; 20. Air outlet hole. Specific embodiments
[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0024] Please refer to Figures 1-6As shown in the figure, a positive-pressure dense-phase pneumatic conveying device for calcium carbide dust materials includes a heating box 1, and also includes a through hole 2 provided on the inner wall of the heating box 1. By setting the heating box 1 and the through hole 2, a heating sleeve 3 can be installed; a heating sleeve 3 is fixed to the inner wall of the through hole 2. By setting the heating sleeve 3, the calcium carbide dust after hydrolysis treatment can be heated to avoid moisture in the processed dust and form a paste, which is not easy to be transported through the pneumatic conveying device; an anti-static hose 4 is provided on the inner wall of the heating sleeve 3. By setting the anti-static hose 4, it is convenient to transport the dust; one end of the anti-static hose 4 is connected to a high-pressure air pump 5. By setting the high-pressure air pump 5, the calcium carbide dust falling into the anti-static hose 4 can be pressurized to achieve the effect of pneumatic conveying; the bottom of the high-pressure air pump 5 is fixed with a first bottom plate 6. By setting the first bottom plate 6, the high-pressure air pump 5 can be supported and fixed; the bottom of the heating box 1 is fixed with a second bottom plate 7. By setting the second bottom plate 7, the heating box 1 can be supported and fixed; a clamping mechanism 8 for fixing the heating box 1 is provided on the inner wall of the second bottom plate 7. By setting the clamping mechanism 8, the heating box 1 can be clamped and fixed to prevent its position from shifting; a grounding mechanism 9 for improving safety is provided on the outside of the anti-static hose 4. By setting the grounding mechanism 9, the anti-static hose 4 for transporting calcium carbide dust can be grounded to prevent static electricity accumulation and discharge sparking between the calcium carbide dust and the pipeline and equipment during transportation; a first funnel 10 provided on the top of the heating sleeve 3, the top of the first funnel 10 is fixed with a hydrolysis bin 11, and the top of the hydrolysis bin 11 is fixed with a second funnel 12. By setting the first funnel 10 and the second funnel 12, it is convenient to transport the calcium carbide dust. By setting the hydrolysis bin 11, the reaction liquid for hydrolyzing calcium carbide is first placed in the hydrolysis bin 11. When calcium carbide is placed in the hydrolysis bin 11, it will quickly react with the hydrolysis liquid and hydrolyze into dust, which is more easily transported by the pneumatic conveying device; control valves 13 are provided on the inner walls of the first funnel 10 and the second funnel 12. By setting the control valves 13, the transportation of calcium carbide dust by the first funnel 10 and the second funnel 12 can be controlled; a calcium carbide bin 14 is fixed to the top of the second funnel 12. By setting the calcium carbide bin 14, calcium carbide is hydrolyzed.
[0025] Please refer to Figure 4 As shown in the figure, the clamping mechanism 8 includes two symmetrically arranged sliding grooves 81 opened on the inner wall of the second bottom plate 7. By setting the sliding grooves 81, a first spring 82 can be installed and it is convenient for the clamping plate 83 to slide inside; the first spring 82 is fixed to the inner wall of the sliding groove 81. By setting the first spring 82, it can drive the clamping plate 83 to move through its own elastic force; one end of the first spring 82 is fixed with the clamping plate 83. By setting the clamping plate 83, the heating box 1 can be clamped and fixed.
[0026] Please refer to Figure 1 、 Figure 2 and Figure 3As shown in the figure, the grounding mechanism 9 includes a wire 91 connected to the inner wall of the anti-static hose 4. By setting the wire 91, the anti-static hose 4 and the discharge cone 94 can be connected. A housing 92 is sleeved outside the wire 91. By setting the housing 92, it can be sleeved outside the wire 91. A sleeve 93 is slidably connected to the outside of the housing 92. By setting the sleeve 93, the discharge cone 94 can be connected and inserted into the ground. A discharge cone 94 is fixed to the bottom of the sleeve 93. By setting the discharge cone 94, it can be inserted into the ground to achieve the grounding effect. A notch 95 is provided on the outer surface of the discharge cone 94. By setting the notch 95, the contact area between the discharge cone 94 and the soil in the ground can be enlarged. An empty groove 96 is provided on the inner wall of the housing 92. By setting the empty groove 96, the second spring 97 can be installed. A second spring 97 is fixedly connected to the inner wall of the empty groove 96. By setting the second spring 97, the expansion and contraction of the latch 98 can be driven. One end of the second spring 97 is fixed with a latch 98. A clamping hole 99 is provided in the inner wall of the sleeve 93. The latch 98 is clamped to the inner wall of the clamping hole 99. By setting the latch 98 to pass through the clamping hole 99, it can be clamped and fixed to the soil in the ground, making the grounding more stable.
[0027] Please refer to Figure 5 and Figure 6 As shown in the figure, a feed pipe 15 is connected to the top of the calcium carbide bin 14. By setting the feed pipe 15, the calcium carbide to be hydrolyzed can be placed in the calcium carbide bin 14. A first sealing cover 16 is provided at the top end of the feed pipe 15. By setting the first sealing cover 16, the feed pipe 15 can be sealed. A ventilation pipe 17 is connected to the inner wall of the first funnel 10. A second sealing cover 18 is provided at the top end of the ventilation pipe 17. Air inlet holes 19 and air outlet holes 20 are respectively provided on the inner wall of the ventilation pipe 17. By setting the air inlet holes 19, gas can be injected into the inside of the hydrolysis chamber 11. When hydrolyzing calcium carbide, in order to avoid reacting with certain substances in the air, a protective gas needs to be injected into the inside of the hydrolysis chamber 11. When injecting the protective gas, the internal air will be discharged from the air outlet holes 20, so as to ensure that the inside of the hydrolysis chamber 11 is filled with the protective gas.
[0028] Working principle: The worker places the calcium carbide to be hydrolyzed into the calcium carbide bin 14 through the feed pipe 15. The calcium carbide is hydrolyzed by the calcium carbide bin 14 and then enters the hydrolysis chamber 11 through the second funnel 12. When the calcium carbide is placed into the hydrolysis chamber 11, it will quickly react with the hydrolysis liquid and hydrolyze into dust. Then, it enters the heating sleeve 3 through the first funnel 10. The heating sleeve 3 heats the hydrolyzed calcium carbide dust to avoid the processed dust containing moisture and forming a paste. Finally, the dust falls into the anti-static hose 4. The high-pressure air pump 5 is turned on to pressurize the calcium carbide dust falling into the anti-static hose 4 to achieve the effect of pneumatic conveying. During the conveying process of the calcium carbide dust, the generated static electricity can be effectively transmitted to the ground through the wire 91 and the discharge cone 94, preventing the calcium carbide dust from accumulating static electricity in the pipeline and equipment during the conveying process and generating discharge sparks.
[0029] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.
[0030] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A positive pressure dense phase pneumatic conveying device for calcium carbide dust materials, comprising a heating box (1), characterized in that: Also includes: A through hole (2) is provided on the inner wall of the heating box (1), a heating sleeve (3) is fixed on the inner wall of the through hole (2), an antistatic hose (4) is provided on the inner wall of the heating sleeve (3), one end of the antistatic hose (4) is connected to a high-pressure air pump (5), a first bottom plate (6) is fixed on the bottom of the high-pressure air pump (5), a second bottom plate (7) is fixed on the bottom of the heating box (1), a clamping mechanism (8) for fixing the heating box (1) is provided on the inner wall of the second bottom plate (7), and a grounding mechanism (9) for improving safety is provided on the outer side of the antistatic hose (4); A first funnel (10) is arranged on the top of the heating jacket (3), a hydrolysis chamber (11) is fixed on the top of the first funnel (10), a second funnel (12) is fixed on the top of the hydrolysis chamber (11), control valves (13) are arranged on the inner walls of the first funnel (10) and the second funnel (12), and a calcium carbide chamber (14) is fixed on the top of the second funnel (12).
2. A positive pressure dense phase pneumatic conveying device for calcium carbide dust materials according to claim 1, characterized in that: The clamping mechanism (8) comprises two symmetrical sliding grooves (81) opened on the inner wall of the second bottom plate (7), a first spring (82) is fixed to the inner wall of the sliding groove (81), and a clamping plate (83) is fixed to one end of the first spring (82).
3. A positive pressure dense phase pneumatic conveying device for calcium carbide dust materials according to claim 1, characterized in that: The grounding mechanism (9) comprises a wire (91) connected to the inner wall of the antistatic hose (4); the outer side of the wire (91) is sleeved with a shell (92); the outer side of the shell (92) is slidably connected with a sleeve (93).
4. A positive pressure dense phase pneumatic conveying device for calcium carbide dust materials according to claim 3, characterized in that: A discharge cone (94) is fixed to the bottom of the sleeve (93), and a groove (95) is formed on the outer surface of the discharge cone (94).
5. A positive pressure dense phase pneumatic conveying device for calcium carbide dust materials according to claim 3, characterized in that: The inner wall of the housing (92) is provided with a hollow groove (96), the inner wall of the hollow groove (96) is fixedly connected with a second spring (97), one end of the second spring (97) is fixed with a latch pin (98), the inner wall of the sleeve (93) is provided with a latch hole (99), and the latch pin (98) is latched with the inner wall of the latch hole (99).
6. A positive pressure dense phase pneumatic conveying device for calcium carbide dust materials according to claim 1, characterized in that: The top of the calcium carbide bin (14) is connected to a feed pipe (15), and the top end of the feed pipe (15) is provided with a first sealing cover (16).
7. A positive pressure dense phase pneumatic conveying device for calcium carbide dust materials according to claim 1, characterized in that: The inner wall of the first funnel (10) is connected to a vent pipe (17), a second sealing cover (18) is arranged at the top of the vent pipe (17), and an air inlet hole (19) and an air outlet hole (20) are respectively opened on the inner wall of the vent pipe (17).