Calcium carbide furnace cooling system

Abstract

The utility model relates to the technical field of calcium carbide furnace cooling, in particular to a calcium carbide furnace cooling system which comprises an outer furnace body, an inner furnace body is arranged in the outer furnace body, a furnace cover is installed on the top of the inner furnace body, and supporting legs fixedly connected with the bottom of the inner furnace body are fixed to the bottom of a cavity of the outer furnace body. An annular space is formed between the outer furnace body and the inner furnace body, a bottom space is formed between the bottom of the inner furnace body and the bottom of a cavity of the outer furnace body, and a built-in water cooling pipe is arranged in the annular space and spirally and tightly wound on the outer side wall of the inner furnace body. According to the system, a furnace body of a calcium carbide furnace of an existing structure can be cooled, a water cooling and air cooling combined mode is adopted in the cooling process, water cooling can be effectively utilized for rapid cooling, then air cooling is utilized for taking away redundant heat, meanwhile, cooling water liquid and airflow obtained after water washing and cooling can be continuously supplied, and the cooling efficiency of the calcium carbide furnace is improved. And the cooling effect and efficiency are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of calcium carbide furnace cooling, in particular to a novel cooling structure for realizing rapid cooling of a high-temperature furnace body of a calcium carbide furnace by combining water cooling with air cooling, in particular to a calcium carbide furnace cooling system. Background Art

[0002] Calcium carbide furnace is the main equipment for producing calcium carbide. In the calcium carbide furnace, the high temperature generated by the electric arc causes the charge to melt and react to produce calcium carbide. Since the reaction temperature is as high as over 2000℃, such a high temperature is difficult for general refractory materials to withstand.

[0003] Therefore, it is necessary to effectively cool the furnace body and furnace cover to protect them from damage. At the same time, reasonable control of the cooling effect also has a certain effect on the quality of calcium carbide in calcium carbide production.

[0004] At present, in the prior art, a water circulation system is generally used for cooling the calcium carbide furnace. For example, the patent document with the patent publication number CN202415169U discloses a sealed cooling device for the furnace wall of a calcium carbide furnace, the structure of which includes a furnace wall of a calcium carbide furnace, a cooling water circulation device, a water inlet pipe and a water outlet pipe; there is a furnace eye on the furnace wall of the calcium carbide furnace, a cooling water circulation device is fixed on the furnace wall of the calcium carbide furnace outside the furnace eye, and a water outlet pipe and a water inlet pipe communicating with the inner cavity of the cooling water circulation device are fixedly installed on the left and right sides of the cooling water circulation device.

[0005] It can be seen from the records of the above-mentioned prior art patents that the current cooling of the calcium carbide furnace is mainly through the first water inlet baffle, the first water outlet baffle, the first partition, the water inlet lower baffle, the water outlet baffle, the water inlet baffle, the water outlet lower baffle and the connecting plate in conjunction with the water inlet pipe and the water outlet pipe. This structure causes the problem of poor fluidity during the flow of water. At the same time, this cooling method only relies on heat conduction to dissipate heat when cooling the furnace wall to achieve heat conversion. The cooling efficiency is low, which can easily cause internal heat accumulation, obstruction of the heat circulation path, and other problems.

[0006] To this end, the utility model improves the problem of poor cooling effect of the calcium carbide furnace body in the prior art, and specially proposes a new cooling system that can achieve a combination of water cooling and air cooling to better solve the problems existing in the prior art. Utility Model Content

[0007] The utility model is to solve one of the above technical problems, and the technical solution adopted is: a calcium carbide furnace cooling system, including an outer furnace body, an inner furnace body is arranged inside the outer furnace body, a furnace cover is installed on the top of the inner furnace body, each leg fixedly connected to the bottom of the inner furnace body is fixed to the bottom of the cavity of the outer furnace body, an annular space is formed between the outer furnace body and the inner furnace body, the bottom of the inner furnace body and the bottom of the cavity of the outer furnace body form a bottom space, the annular space is communicated with the bottom space, a built-in water-cooling pipe is arranged in the annular space, and the built-in water-cooling pipe is spirally wound tightly The outer wall of the inner furnace body is sealed, the upper outflow pipe section and the lower inflow pipe section of the built-in water-cooling pipe are movably passed through to the left side of the outer furnace body respectively; a water-cooling supply unit is arranged on the left side of the outer furnace body, the return pipe of the water-cooling supply unit is connected with the upper outflow pipe section of the built-in water-cooling pipe, and the water outlet pipe of the water-cooling supply unit is connected with the lower inflow pipe section of the built-in water-cooling pipe; an air-cooling unit is arranged on the right side of the outer furnace body, the air inlet of the air-cooling unit extends to the interior of the annular space, and an exhaust unit is installed on the upper right side of the annular space.

[0008] In any of the above schemes, it is preferred that the water-cooling supply unit includes a cooling water storage tank fixedly installed on the ground, the return pipe and the outlet pipe are respectively installed on the upper and lower parts of the right side of the cooling water storage tank, a return valve is installed on the return pipe, and an outlet valve is installed on the outlet pipe. A drain pipe is installed on the lower left side of the cooling water storage tank, and a drain valve is installed on the drain pipe. The water storage cavity of the cooling water storage tank is filled with cooling water, a tank cover is provided on the top cover of the cooling water storage tank, and a stirring drive mechanism is installed in the middle of the tank cover. The lower end of the stirring drive mechanism extends into the interior of the cooling water storage tank and is used to stir and cool the cooling water inside the tank. A return pump is installed on the return pipe, and an outlet pump is installed on the outlet pipe. The outlet pump and the return pump are respectively fixedly installed at the bottom and top of a horizontal seat, and the left end of the horizontal seat is fixed on the right side wall of the cooling water storage tank.

[0009] In any of the above schemes, preferably, the stirring drive mechanism includes a motor box vertically fixedly installed at the top center of the pool cover, a vertically arranged stirring motor is installed inside the motor box, the bottom of the motor shell of the stirring motor is fixedly installed at the bottom of the motor cavity of the motor box, and the lower end of the motor shaft of the stirring motor extends into the cooling water storage tank and is fixedly connected to the central top of an agitator.

[0010] In any of the above schemes, it is preferred that the agitator includes a horizontal stirring frame horizontally arranged in the cooling water storage tank, the top center of the horizontal stirring frame is fixedly installed on the bottom of a stirring shaft, the top of the stirring shaft is coaxially fixedly connected to the motor shaft of the stirring motor, and a stirring vertical plate is respectively installed on both sides of the inner frame of the horizontal stirring frame, and the connecting shafts at the upper and lower ends of the stirring vertical plate are movably hinged in the through holes at the corresponding positions of the horizontal stirring frame.

[0011] In any of the above schemes, it is preferred that the air cooling unit includes an air washing water tank fixedly installed on the ground on the right side of the outer furnace body, a water tank cover is provided on the top of the air washing water tank, an air intake pipe is provided on the lower right side of the water tank cover, an air intake valve is installed on the air intake pipe, and a fixed transmission air pump is provided above the water tank cover, the air intake end of the transmission air pump extends to the interior of the air washing water tank through an air guide bend pipe, and the air outlet end of the transmission air pump extends to the interior of the annular space through an air outlet bend pipe.

[0012] In any of the above schemes, preferably, a multi-way joint is installed at the port of the outlet elbow inside the annular space, and each outlet of the multi-way joint is respectively arranged toward the upper part of the annular space and the left side of the bottom space. In any of the above schemes, preferably, the exhaust unit includes an exhaust pipeline installed on the upper outer side wall of the outer furnace body, the inner end of the exhaust pipeline is connected to the inside of the annular space, and a thermometer for detecting the exhaust temperature is installed on the exhaust pipeline.

[0013] In any of the above schemes, it is preferred that a sunshade is provided on the outer cover of the gas washing water tank, the bottom of the sunshade is fixedly installed on the ground, and the transmission air pump is fixedly installed on the left top of the sunshade.

[0014] In any of the above schemes, preferably, the outer contour of the cross section of the built-in water-cooling tube is a rectangle, and the four corners of the cross section of the inner tube cavity of the built-in water-cooling tube are all in the shape of inner round chamfers.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The cooling system of the calcium carbide furnace can cool the furnace body of the calcium carbide furnace with the existing structure. In the cooling process, a combination of water cooling and air cooling is adopted. It can effectively use water cooling to quickly cool down, and then use air cooling to take away the excess heat. At the same time, it can continuously supply cooling water and air flow after water washing and cooling, effectively improving the cooling effect and efficiency.

[0017] 2. When the water cooling operation is performed in this system, a spirally wound built-in water cooling pipe is used to achieve the tight contact between the water cooling pipe and the outer wall of the high-temperature inner furnace body. Here, the built-in water cooling pipe is set to a rectangular structure in cross section, which can effectively ensure the contact area when the built-in water cooling pipe is close to the outer wall of the inner furnace body, thereby improving the water cooling effect.

[0018] 3. There is still an annular space outside the built-in water-cooling pipe. By starting the air-cooling unit on the right, the air flow washed with low-temperature water can be continuously introduced into the annular space, and discharged from the upper exhaust unit after internal diversion, so that the residual heat in the annular space can be quickly exported, further improving the cooling effect.

[0019] 4. The cooling water is recycled. The cooled water flows back to the water cooling supply unit for cooling. Natural cooling combined with stirring cooling is used during cooling to increase the cooling speed and ensure that the cooling water can be used continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, each element or component is not necessarily drawn according to the actual scale.

[0021] Figure 1 It is a structural schematic diagram of the utility model (the outer furnace body is in a cross-sectional state).

[0022] Figure 2 It is a partial structural schematic diagram of the utility model (the built-in water cooling pipe is in a cross-sectional state).

[0023] Figure 3 It is a schematic diagram of the internal cross-sectional structure of the water-cooling supply unit of the utility model.

[0024] In the figure, 1, outer furnace body; 2, inner furnace body; 3, furnace cover; 4, legs; 5, annular space; 6, bottom space; 7, built-in water cooling pipe; 701, upper outflow pipe section; 702, lower inflow pipe; 8, return pipe; 9, outlet pipe; 10, cooling water storage tank; 11, ground; 12, return valve; 13, outlet valve; 14, drain pipe; 15, drain valve; 16, water storage chamber; 17, cooling water; 18, tank cover; 19, return pump; 20, Water outlet pump; 21. Horizontal seat; 22. Through heat dissipation opening; 23. Motor box; 24. Stirring motor; 25. Motor cavity; 26. Horizontal stirring frame; 27. Stirring shaft; 28. Stirring vertical plate; 29. ​​Connecting shaft; 30. Washing water tank; 31. Water tank cover; 32. Inlet pipe; 33. Inlet valve; 34. Transmission air pump; 35. Air guide elbow; 36. Air outlet elbow; 37. Multi-way connector; 38. Exhaust pipe; 39. Thermometer; 40. Sunshade. DETAILED DESCRIPTION

[0025] The following is a detailed description of the embodiments of the technical solution of the utility model in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the scope of protection of the utility model. Figure 1-Figure 3 as shown in .

[0026] Embodiment 1: A calcium carbide furnace cooling system, comprising an outer furnace body 1, an inner furnace body 2 is arranged inside the outer furnace body 1, a furnace cover 3 is installed on the top of the inner furnace body 2, each leg 4 fixedly connected to the bottom of the inner furnace body 2 is fixed to the bottom of the cavity of the outer furnace body 1, an annular space 5 is formed between the outer furnace body 1 and the inner furnace body 2, the bottom of the inner furnace body 2 and the bottom of the cavity of the outer furnace body 1 form a bottom space 6, the annular space 5 is communicated with the bottom space 6, and a built-in water cooling pipe 7 is arranged in the annular space 5, and the built-in water cooling pipe 7 is spirally wound tightly on the outer wall of the inner furnace body 2 , the upper outflow pipe section 701 and the lower inflow pipe section 702 of the built-in water-cooling pipe 7 are respectively movably passed through to the left side of the outer furnace body 1; a water-cooling supply unit is arranged on the left side of the outer furnace body 1, the return pipe 8 of the water-cooling supply unit is connected to the upper outflow pipe section 701 of the built-in water-cooling pipe 7, the outlet pipe 9 of the water-cooling supply unit is connected to the lower inflow pipe section 702 of the built-in water-cooling pipe 7, and an air-cooling unit is arranged on the right side of the outer furnace body 1, the air inlet of the air-cooling unit extends to the inside of the annular space 5, and an exhaust unit is installed on the upper right side of the annular space 5. The calcium carbide furnace cooling system designed in the utility model adopts a water-cooling combined with air-cooling method to complete the cooling treatment of the inside of the calcium carbide furnace body, which can effectively control the cooling of the furnace body and ensure the temperature reduction protection of the high-temperature furnace body.

[0027] The use of a tightly wound built-in water-cooling tube 7 on the outer wall of the inner furnace body 2 can effectively ensure direct contact between the inner ring wall formed by the spiral winding of the built-in water-cooling tube 7 and the metal wall of the outer wall of the inner furnace body 2. In addition, in order to greatly improve the tightness and contact area with the outer wall of the inner furnace body 2 during water cooling, the outer contour of the cross-section of the built-in water-cooling tube 7 is made into a rectangle to ensure that the inner wall is completely pressed against the outer wall of the inner furnace body 2, and the contact area is greatly improved compared to that of a round tube.

[0028] In any of the above schemes, it is preferred that the outer contour of the cross section of the built-in water-cooling pipe 7 is a rectangle, and the four corners of the cross section of the inner tube cavity of the built-in water-cooling pipe 7 are all in the shape of inner round chamfers. Providing inner round corners around the inner tube cavity of the built-in water-cooling pipe 7 can ensure the smoothness of water flow, reduce the impact of sharp corners on the water flow, and make the water flow more stable. In any of the above schemes, it is preferred that the water-cooling supply unit includes a cooling water storage tank 10 fixedly installed on the ground 11, and the return pipe 8 and the outlet pipe 9 are respectively installed on the upper and lower parts of the right side of the cooling water storage tank 10, a return valve 12 is installed on the return pipe 8, and an outlet valve 13 is installed on the outlet pipe 9, a drain pipe 14 is installed on the lower left side of the cooling water storage tank 10, and a drain valve 15 is installed on the drain pipe 14, and the water storage cavity 16 of the cooling water storage tank 10 is filled with cooling water 17. A water tank cover 18 is provided on the top cover of the cooling water storage circular tank 10, and a stirring drive mechanism is installed in the middle of the water tank cover 18. The lower end of the stirring drive mechanism extends into the interior of the cooling water storage circular tank 10 and is used to stir and cool the cooling water liquid 17 therein. A return water pump 19 is installed on the return water pipe 8, and an outlet water pump 20 is installed on the outlet water pipe 9. The outlet water pump 20 and the return water pump 19 are respectively fixedly installed at the bottom and top of a horizontal seat 21, and the left end of the horizontal seat 21 is fixed on the right side wall of the cooling water storage circular tank 10.

[0029] The water-cooling supply unit as a whole relies on the cooling water storage tank 10 to store the cooling water 17 for cooling. The cotton knots on the upper surface of the entire cooling water storage tank 10 are relatively large, which can effectively ensure the area of ​​the upper part of the water in contact with the air and improve the cooling efficiency.

[0030] When it is necessary to cool the inner furnace body 2 of the calcium carbide furnace, start the return water pipe 8, the water outlet valve 13 and the return water valve 12 on the water outlet pipe 9 are opened, and the corresponding water outlet pump 20 and return water pump 19 are started at the same time, so that the cooling water 17 can circulate between the built-in water cooling pipe 7 and the cooling water storage tank 10. When the cooling water 17 passes through the outer wall of the inner furnace body 2, the heat conduction of the metal pipe can quickly cool the furnace wall of the inner furnace body 2. At this time, the water temperature inside the built-in water cooling pipe 7 will rise and flow back to the cooling water storage tank 10 for cooling, so that the heat can be continuously extracted and cooled, and the temperature of the inner furnace body 2 can be effectively reduced.

[0031] When cooling the water inside the cooling water storage tank 10, the stirring driving mechanism is combined to implement stirring cooling, thereby further improving the cooling efficiency.

[0032] A plurality of through heat dissipation openings 22 are provided at intervals on the surface of the pool cover 18 .

[0033] The through heat dissipation openings 22 are able to connect the external environment with the interior of the water storage cavity 16 of the cooling water storage circular pool 10, so that the heat dissipated outward during the cooling process can directly drift upward through the through heat dissipation openings 22 and flow to the external environment, thereby accelerating the cooling speed.

[0034] In any of the above schemes, it is preferred that the stirring drive mechanism includes a motor box 23 vertically fixedly installed at the top center of the pool cover 18, a vertically arranged stirring motor 24 is installed inside the motor box 23, the bottom of the motor shell of the stirring motor 24 is fixedly installed at the bottom of the motor cavity 25 of the motor box 23, and the lower end of the motor shaft of the stirring motor 24 extends into the cooling water storage pool 10 and is fixedly connected to the central top of an agitator.

[0035] When the stirring drive mechanism is working, starting the stirring motor 24 can drive the stirrer whose bottom extends into the water storage cavity 16 of the cooling water storage round pool 10 to rotate as needed to achieve stirring and cooling actions.

[0036] In any of the above schemes, it is preferred that the agitator includes a horizontal stirring frame 26 horizontally arranged in the cooling water storage tank 10, the top center of the horizontal stirring frame 26 is fixedly installed on the bottom of a stirring shaft 27, the top of the stirring shaft 27 is coaxially fixedly connected to the motor shaft of the stirring motor 24, and a stirring vertical plate 28 is respectively installed on both sides of the inner frame of the horizontal stirring frame 26, and the connecting shafts 29 at the upper and lower ends of the stirring vertical plate 28 are movably hinged in the through holes at the corresponding positions of the horizontal stirring frame 26.

[0037] When the agitator rotates along with the agitator shaft 27, the designed horizontal agitator frame 26 can achieve a large range of agitation of the internal cooling water liquid 17 along the radial direction, and effectively rely on each rotatable agitator vertical plate 28 to stir the internal water liquid, effectively improving the stirring effect.

[0038] While the horizontal stirring frame 26 is rotating, the two stirring upright plates 28 thereon can also complete stirring while rotating at a certain angle, thereby generating turbulence to the water flow, ensuring that the water flows shake and collide with each other, thereby improving the stirring effect.

[0039] In any of the above schemes, it is preferred that the air cooling unit includes an air washing water tank 30 fixedly mounted on the ground 11 on the right side of the outer furnace body 1, a water tank cover 31 is arranged on the top of the air washing water tank 30, an air intake pipeline 32 is arranged on the lower right side of the water tank cover 31, an air intake valve 33 is installed on the air intake pipeline 32, and a fixed transmission air pump 34 is arranged above the water tank cover 31, the air intake end of the transmission air pump 34 extends to the interior of the air washing water tank 30 through an air guide bend 35, and the air outlet end of the transmission air pump 34 extends to the interior of the annular space 5 through an air outlet bend 36. The purpose of designing the air cooling unit is to take into account that there will still be a certain amount of heat inside the annular space 5 after water cooling. At this time, the internal heat cannot be discharged, which will affect the cooling effect. Therefore, an air flow is introduced into the annular space 5 and after flowing inside, the heat is taken away and finally flows out from the upper part of the annular space 5 to the external environment. This reciprocating process can quickly complete the continuous blowing out of the internal heat of the annular space 5, thereby improving the cooling effect and efficiency.

[0040] The gas entering the annular space 5 is pre-cooled by the scrubbing water tank 30. The gas has a low temperature and carries a certain amount of water vapor. When it encounters the inner wall of the annular space 5, it will evaporate and dissipate heat, further absorb heat, and finally be discharged through the upper exhaust unit, thereby achieving the purpose of air cooling, exhausting and heat removal.

[0041] During the operation of the air cooling unit, the transmission air pump 34 can play the role of power transmission airflow.

[0042] Embodiment 2: Compared with Embodiment 1, the difference of this embodiment is that it further comprises:

[0043] A multi-way connector 37 is installed at the port of the air outlet elbow 36 inside the annular space 5 , and each air outlet of the multi-way connector 37 is arranged toward the upper part of the annular space 5 and the left side of the bottom space 6 .

[0044] The airflow entering the annular space 5 can be ejected in multiple directions through the multi-way joint 37, so that the airflow can cool the inner furnace body 2 and the built-in water cooling pipe 7 inside the annular space 5 from multiple directions, thereby accelerating the efficiency of gas air cooling.

[0045] In any of the above schemes, it is preferred that the exhaust unit includes an exhaust pipe 38 installed on the upper outer wall of the outer furnace body 1, the inner end of the exhaust pipe 38 is connected to the interior of the annular space 5, and a thermometer 39 for detecting the exhaust temperature is installed on the exhaust pipe 38.

[0046] The exhaust unit is used to discharge the rising gas inside the annular space 5 to the outside through the exhaust pipe 38, thereby continuously discharging the internal heat. The thermometer 39 here can intuitively reflect the current internal temperature, so that the cooling effect can be seen and the flow of water cooling and air cooling can be controlled according to the current situation.

[0047] In any of the above schemes, preferably, a sunshade 40 is provided on the outer cover of the scrubbing water tank 30, the bottom of the sunshade 40 is fixedly mounted on the ground 11, and the transmission air pump 34 is fixedly mounted on the left top of the sunshade 40. The sunshade 40 can avoid external radiation, effectively placing the scrubbing water tank 30 in a relatively dark position, effectively ensuring that the water liquid inside it can be kept at a relatively low temperature, ensuring that the gas after scrubbing can be cooled, and then improving the water cooling effect when entering the annular space 5 to achieve water cooling.

[0048] Specific working principle: The calcium carbide furnace cooling system in this design uses a combination of water cooling and air cooling to complete the cooling treatment of the inside of the calcium carbide furnace body, which can effectively control the cooling of the furnace body and ensure the temperature reduction protection of the high-temperature furnace body. The use of a tightly wound built-in water-cooling pipe 7 on the outer wall of the inner furnace body 2 can effectively ensure the direct contact between the inner ring wall formed by the spiral winding of the built-in water-cooling pipe 7 and the metal wall of the outer wall of the inner furnace body 2. In addition, in order to greatly improve the tightness and contact area of ​​the contact with the outer wall of the inner furnace body 2 during water cooling, the outer contour of the cross section of the built-in water-cooling pipe 7 is rectangular to ensure that the inner wall is completely pressed against the outer wall of the inner furnace body 2, and the contact area is greatly improved compared to the round tube.

[0049] The inner fillet is arranged around the inner tube cavity of the built-in water cooling pipe 7 to ensure the smoothness of the water flow, reduce the influence of sharp corners on the water flow, and make the water flow more stable. Specifically, when the inner furnace body 2 of the calcium carbide furnace needs to be cooled, the water outlet valve 13 and the return valve 12 on the return pipe 8 and the outlet pipe 9 are opened, and the corresponding outlet pump 20 and the return pump 19 are started at the same time, so that the cooling water 17 can circulate between the built-in water cooling pipe 7 and the cooling water storage pool 10, and when the cooling water 17 passes through the outer wall of the inner furnace body 2, the heat conduction of the metal pipe can be used to quickly cool the furnace wall of the inner furnace body 2, and the water temperature inside the built-in water cooling pipe 7 will rise, and flow back to the cooling water storage pool 10 for cooling, so that the heat is continuously exported and cooled, and the temperature of the inner furnace body 2 is effectively reduced. When the water inside the cooling water storage pool 10 is cooled, the stirring cooling process is realized in combination with the stirring drive mechanism, and the cooling efficiency is further accelerated.

[0050] From the above, it can be seen that the cooling system of the calcium carbide furnace can complete the cooling of the furnace body for the calcium carbide furnace. It adopts a combination of water cooling and air cooling, effectively uses water cooling to quickly cool down, and then uses air cooling to take away excess heat, and continuously supplies cooling water 17 and the air flow after water washing and cooling, effectively improving the cooling effect and efficiency; considering that there is still an annular space 5 outside the built-in water cooling pipe 7, relying on the start-up of the air cooling unit on the right, the air flow after water washing with low-temperature water can be continuously introduced into the annular space 5, and after internal diversion, it is discharged by the upper exhaust unit, so that the residual heat in the annular space 5 can be quickly discharged, further improving the cooling effect.

[0051] When the water cooling operation is carried out, the designed spirally wound built-in water-cooling tube 7 is relied upon to achieve the tight contact between the water-cooling tube and the outer wall of the high-temperature inner furnace body 2. The built-in water-cooling tube 7 is set to a rectangular structure in cross section, which can effectively ensure the contact area of ​​the built-in water-cooling tube 7 when it is close to the outer wall of the inner furnace body 2, thereby improving the water cooling effect. The cooling water 17 is recycled, and the cooled water flows back to the water cooling supply unit for cooling. Natural cooling and stirring cooling are used during cooling to increase the cooling speed and ensure that the cooling water 17 can be used continuously.

[0052] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model. For technicians in this technical field, any replacement improvements or changes made to the implementation methods of the utility model fall within the protection scope of the utility model.

[0053] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A calcium carbide furnace cooling system, comprising an outer furnace body, an inner furnace body arranged inside the outer furnace body, and a furnace cover installed on the top of the inner furnace body, characterized in that: The legs fixedly connected to the bottom of the inner furnace body are all fixed to the bottom of the cavity of the outer furnace body, an annular space is formed between the outer furnace body and the inner furnace body, the bottom of the inner furnace body and the bottom of the cavity of the outer furnace body form a bottom space, the annular space is communicated with the bottom space, a built-in water cooling pipe is arranged in the annular space, the built-in water cooling pipe is spirally wound tightly on the outer side wall of the inner furnace body, and the upper outflow pipe section and the lower inflow pipe section of the built-in water cooling pipe are respectively movable and pass through to the left side of the outer furnace body; A water-cooling supply unit is arranged on the left side of the outer furnace body, the return pipe of the water-cooling supply unit is connected to the upper outflow pipe section of the built-in water-cooling pipe, the outlet pipe of the water-cooling supply unit is connected to the lower inflow pipe section of the built-in water-cooling pipe, and an air-cooling unit is arranged on the right side of the outer furnace body, the air inlet of the air-cooling unit extends to the interior of the annular space, and an exhaust unit is installed on the upper right side of the annular space.

2. A calcium carbide furnace cooling system according to claim 1, characterized in that: The water-cooling supply unit comprises a cooling water storage tank fixedly mounted on the ground, wherein the return water pipe and the outlet water pipe are respectively mounted on the upper right side and the lower right side of the cooling water storage tank, a return water valve is mounted on the return water pipe, and an outlet water valve is mounted on the outlet water pipe, a drain pipe is mounted on the lower left side of the cooling water storage tank, and a drain valve is mounted on the drain pipe, a water storage cavity of the cooling water storage tank is filled with cooling water, a water tank cover is provided on the top cover of the cooling water storage tank, a stirring drive mechanism is mounted in the middle of the water tank cover, the lower end of the stirring drive mechanism extends into the interior of the cooling water storage tank and is used to stir and cool the cooling water inside the cooling water storage tank, a return water pump is mounted on the return water pipe, and an outlet water pump is mounted on the outlet water pipe, the outlet water pump and the return water pump are respectively fixedly mounted on the bottom and the top of a horizontal seat, and the left end of the horizontal seat is fixed on the right side wall of the cooling water storage tank.

3. A calcium carbide furnace cooling system according to claim 2, characterized in that: The stirring drive mechanism includes a motor box vertically fixedly installed at the top center of the pool cover, a vertically arranged stirring motor is installed inside the motor box, the bottom of the motor shell of the stirring motor is fixedly installed at the bottom of the motor cavity of the motor box, and the lower end of the motor shaft of the stirring motor extends into the cooling water storage pool and is fixedly connected to the central top of an agitator.

4. A calcium carbide furnace cooling system according to claim 3, characterized in that: The agitator includes a horizontal stirring frame horizontally arranged in the cooling water storage tank, the top center of the horizontal stirring frame is fixedly installed on the bottom of a stirring shaft, the top of the stirring shaft is coaxially fixedly connected to the motor shaft of the stirring motor, and a stirring vertical plate is respectively installed on both sides of the inner frame of the horizontal stirring frame, and the connecting shafts at the upper and lower ends of the stirring vertical plate are movably hinged in the through holes at the corresponding positions of the horizontal stirring frame.

5. A calcium carbide furnace cooling system according to claim 4, characterized in that: The air cooling unit includes an air washing water tank fixedly installed on the ground on the right side of the outer furnace body, a water tank cover is arranged on the top of the air washing water tank, an air intake pipeline is arranged on the lower right side of the water tank cover, an air intake valve is installed on the air intake pipeline, and a fixed transmission air pump is arranged above the water tank cover, the air intake end of the transmission air pump extends to the interior of the air washing water tank through an air guide bend pipe, and the air outlet end of the transmission air pump extends to the interior of the annular space through an air outlet bend pipe.

6. A calcium carbide furnace cooling system according to claim 5, characterized in that: A multi-way joint is installed at the port portion of the air outlet elbow inside the annular space, and each air outlet of the multi-way joint is arranged toward the upper part of the annular space and the left side of the bottom space respectively.

7. A calcium carbide furnace cooling system according to claim 6, characterized in that: The exhaust unit comprises an exhaust pipeline installed on the upper outer side wall of the outer furnace body, the inner end of the exhaust pipeline is connected to the inside of the annular space, and a thermometer for detecting the exhaust temperature is installed on the exhaust pipeline.

8. A calcium carbide furnace cooling system according to claim 7, characterized in that: A sunshade is provided on the outer cover of the gas washing water tank, the bottom of the sunshade is fixedly installed on the ground, and the transmission air pump is fixedly installed on the left top of the sunshade.

9. A calcium carbide furnace cooling system according to claim 8, characterized in that: The outer contour of the cross section of the built-in water-cooling tube is a rectangle, and the four corners of the cross section of the inner tube cavity of the built-in water-cooling tube are all in the shape of inner round chamfers.

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