Spraying device

Abstract

The utility model relates to the technical field of non-ferrous metallurgy production, and discloses a spraying device which comprises a spraying tower, an annular pipe is fixedly installed on the outer diameter of the upper side of the spraying tower through a support, a plurality of elbow connecting pipes are evenly installed at the outer side end of the annular pipe, branch pipes are installed at the tail ends of the elbow connecting pipes, and the branch pipes are connected with the annular pipe. The tail ends of the branch pipes penetrate through the outer wall of the spraying tower and extend into the spraying tower, snail nozzles are installed at the tail ends of the branch pipes, an auxiliary mechanism is arranged on the upper side of the interior of the spraying tower, and a movable ring is movably connected to the middle of the annular fixing plate. According to the spray tower, the spray structure is arranged on the periphery of the spray tower, so that the spray head is not easy to block during spray operation, the spray head can be detached from a platform outside the tower to be cleaned, potential safety hazards are avoided, great loss is reduced for enterprises, and meanwhile, an auxiliary mechanism is arranged to scatter sprayed absorption liquid into fine water drops to form high-speed water flow gas, so that the absorption liquid can be sprayed into the spray tower. The waste gas treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nonferrous metallurgical production, in particular to a spraying device. Background Art

[0002] A rotary kiln refers to a rotating calcining kiln, which is similar in appearance to a rotary bed, also called a rotary bed kiln. It belongs to the category of building materials equipment. Rotary kilns can be divided into cement kilns, metallurgical chemical kilns and lime kilns according to the materials they process. Cement kilns are mainly used to calcine cement clinker, and are divided into two categories: dry process cement kilns and wet process cement kilns. Metallurgical chemical kilns are mainly used in the metallurgical industry for magnetizing roasting of lean iron ore in steel mills; oxidative roasting of chromium and nickel iron ore; roasting of high-alumina vanadium ore in refractory plants and roasting of clinker and aluminum hydroxide in aluminum plants; roasting of chromium ore sand and chromium ore powder and other minerals in chemical plants. Lime kilns (i.e. active lime kilns) are used to roast active lime and light-burned dolomite for use in steel mills and ferroalloy plants. Rotary kilns produce a lot of exhaust gas when they are working. In order to reduce the pollution of exhaust gas to the environment, spray towers are usually used to desulfurize the exhaust gas.

[0003] Currently, common spray towers include one absorption tower and two absorption towers. Each tower is equipped with four circulating spray pumps. Each pump is equipped with a spray device consisting of a stainless steel main pipe and eight branch pipes, with a total of 14 stainless steel spiral nozzles for spraying. The stainless steel spiral nozzles are easily blocked by ZnO slurry slag and other impurities, affecting the desulfurization effect. They cannot be cleaned during the production process, and production will not be stopped for cleaning until the absorption effect deteriorates and production is affected. The cleaning time for each tower is about 7 days, and for two towers it is about 14 days. It has been calculated that the various losses of the rotary kiln being stopped for one day are about 100,000 yuan. At the same time, due to the confined space inside the tower and the high-altitude operation, there are serious safety hazards. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a spray device, in which the spray structure is arranged on the periphery of the spray tower, so that the spray head is not easy to be blocked during the spray operation. Even if blockage occurs, the spray head can be removed on the platform outside the tower for cleaning without stopping the kiln and there is no safety hazard. The work efficiency is greatly improved and great losses are reduced for the enterprise.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a spray device, including a spray tower, an annular tube is fixedly installed on the upper outer diameter of the spray tower through a bracket, a plurality of elbow connecting tubes are evenly installed on the outer end of the annular tube, and branch pipes are installed at the ends of the elbow connecting tubes. The ends of the branch pipes pass through the outer wall of the spray tower and extend to the interior, and snail nozzles are installed at the ends of the branch pipes. An auxiliary mechanism is provided on the upper inner side of the spray tower.

[0006] As a further description of the above technical solution:

[0007] The auxiliary mechanism includes an annular fixing plate, which is fixedly connected to the inner upper side of the spray tower, a movable ring is movably connected to the middle of the annular fixing plate, a spur gear is fixedly connected to the bottom end of the movable ring, a plurality of rotating shafts are evenly movably connected to the bottom end of the annular fixing plate, a pinion is fixedly connected to the upper outer diameter of the rotating shaft, the inner end of the pinion is meshed with the outer side of the spur gear, and a cross plate is fixedly connected to the bottom end of the rotating shaft.

[0008] As a further description of the above technical solution:

[0009] A spray pump is installed on one side of the spray tower, an output end of the spray pump is fixedly connected with an output pipe, and the end of the output pipe is fixedly connected to one side of the bottom end of the annular pipe.

[0010] As a further description of the above technical solution:

[0011] The input end of the spray pump is fixedly connected to an input pipe, the end of the input pipe passes through the outer wall of the spray tower and extends to its inner bottom. A water storage tank is provided on the rear side of the spray tower, and the bottom end of the water storage tank is connected to the inner top of the spray tower through a pipeline.

[0012] As a further description of the above technical solution:

[0013] A first packing layer is fixedly connected to the inner middle of the spray tower, a second packing layer is fixedly connected to the upper side of the interior of the spray tower close to the first packing layer, and a flat plate demister is fixedly connected to the inner top of the spray tower.

[0014] As a further description of the above technical solution:

[0015] The top of the spray tower is provided with a smoke outlet, and one side of the bottom of the spray tower is provided with a smoke inlet.

[0016] As a further description of the above technical solution:

[0017] A driven bevel gear is fixedly connected to the top of the movable ring, a DC motor is installed on one side of the top of the spray tower, the driving end of the DC motor passes through the outer wall of the spray tower and is fixedly connected to the driving bevel gear, and the bottom of the driving bevel gear is meshedly connected to the top side of the driven bevel gear.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, the spray structure is arranged on the periphery of the spray tower, so that the spray head is not easy to be blocked during the spraying operation. Even if it is blocked, the spray head can be removed on the platform outside the tower for cleaning without stopping the kiln and there is no safety hazard, which greatly improves the work efficiency and reduces great losses for the enterprise.

[0020] 2. In the utility model, by setting an auxiliary mechanism at the inner top of the spray tower, the sprayed absorption liquid can be broken into fine water droplets to form a high-speed water flow gas. The gas and liquid collide with each other, so that the absorption liquid and the exhaust gas are fully contacted and mixed, thereby improving the exhaust gas treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional schematic diagram of a spray device proposed by the utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of a spray device proposed by the utility model;

[0023] Figure 3 This is a structural schematic diagram of a middle annular fixing plate of a spray device proposed by the utility model;

[0024] Figure 4 The utility model is a bottom view of a middle annular fixing plate of a spray device.

[0025] Legend:

[0026] 1. Spray tower; 2. Annular pipe; 3. Elbow connecting pipe; 4. Branch pipe; 5. Spray pump; 6. Output pipe; 7. Input pipe; 8. Auxiliary mechanism; 801. Annular fixing plate; 802. Movable ring; 803. Driven bevel gear; 804. DC motor; 805. Active bevel gear; 806. Spur gear; 807. Rotating shaft; 808. Pinion; 809. Cross plate; 9. First packing layer; 10. Second packing layer; 11. Flat plate demister; 12. Flue gas outlet; 13. Flue gas inlet; 14. Water tank. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1-4, the utility model provides an embodiment: a spray device, including a spray tower 1, an annular tube 2 is fixedly installed on the upper outer diameter of the spray tower 1 through a bracket, the annular tube 2 is made of glass fiber reinforced plastics and has a diameter of φ150mm, and a plurality of elbow connecting tubes 3 are evenly installed on the outer end of the annular tube 2. The elbow connecting tube 3 is installed on one side through a bolt structure and can be disassembled. The ends of the elbow connecting tubes 3 are all installed with branch pipes 4, which are made of glass fiber reinforced plastics and have a diameter of φ80mm. The ends of the branch pipes 4 penetrate the outer wall of the spray tower 1 and extend to the inside, and the ends of the branch pipes 4 are all installed with snail nozzles, which are convenient for conveying absorption liquid into the tower. An auxiliary mechanism 8 is provided on the upper side of the interior of the spray tower 1 to assist the absorption liquid in gas-liquid flushing with the exhaust gas to improve the treatment effect;

[0029] In this embodiment, the auxiliary mechanism 8 includes an annular fixed plate 801, which is hollow in the middle. The annular fixed plate 801 is fixedly connected to the inner upper side of the spray tower 1. The middle part of the annular fixed plate 801 is movably connected with a movable ring 802. The outer diameter of the movable ring 802 is connected to the inner diameter of the annular fixed plate 801 through a bearing seat. The bottom end of the movable ring 802 is fixedly connected with a spur gear 806. When the movable ring 802 rotates, it will drive the spur gear 806 to rotate. The bottom end of the annular fixed plate 801 is evenly movably connected with a plurality of rotating shafts 807. The rotating shafts 807 The top end is connected to the bottom end of the annular fixed plate 801 through a bearing, and the upper outer diameter of the rotating shaft 807 is fixedly connected with a pinion 808. The inner ends of the pinion 808 are meshed with the outer sides of the spur gear 806. When the spur gear 806 rotates, all the pinions 808 will rotate at high speed. The bottom end of the rotating shaft 807 is fixedly connected with a cross plate 809. The high-speed rotating cross plate 809 will break the sprayed absorption liquid into fine water droplets, forming a high-speed water flow gas. The gas-liquid collision makes the absorption liquid and the exhaust gas fully contact and mix, thereby improving the treatment effect.

[0030] Furthermore, a driven bevel gear 803 is fixedly connected to the top of the movable ring 802, and a DC motor 804 is installed on one side of the top of the spray tower 1. The driving end of the DC motor 804 passes through the outer wall of the spray tower 1 and is fixedly connected to a driving bevel gear 805. The bottom of the driving bevel gear 805 is meshedly connected to one side of the top of the driven bevel gear 803. The driving bevel gear 805 is driven to rotate by the DC motor 804, driving the driven bevel gear 803 and the movable ring 802 to rotate, thereby driving the spur gear 806 to rotate.

[0031] Furthermore, a spray pump 5 is installed on one side of the spray tower 1, and the output end of the spray pump 5 is fixedly connected to an output pipe 6, and the end of the output pipe 6 is fixedly connected to one side of the bottom end of the annular tube 2, so as to facilitate the input of absorption liquid into the interior of the annular tube 2. The input end of the spray pump 5 is fixedly connected to an input pipe 7, and the end of the input pipe 7 passes through the outer wall of the spray tower 1 and extends to its inner bottom, so as to facilitate the pumping of absorption liquid into the output pipe 6. A water storage tank 14 is provided on the rear side of the spray tower 1, and the bottom end of the water storage tank 14 is connected to the inner top of the spray tower 1 through a pipeline, and there is absorption liquid in the water storage tank 14.

[0032] Furthermore, a first packing layer 9 is fixedly connected to the inner middle part of the spray tower 1, and a second packing layer 10 is fixedly connected to the upper side of the first packing layer 9 inside the spray tower 1. Both the first packing layer 9 and the second packing layer 10 are hollow ball packings. A flat-plate demister 11 is fixedly connected to the inner top of the spray tower 1 for removing treated mist.

[0033] Furthermore, a smoke outlet 12 is provided at the top of the spray tower 1, and a smoke inlet 13 is provided at one side of the bottom of the spray tower 1 for introducing and exporting gas.

[0034] Working principle: waste gas is introduced into the spray tower 1 through the flue gas inlet 13, the waste gas rises to the first packing layer 9 and reacts chemically with the packing for preliminary purification, the incompletely purified waste gas continues to rise to the second packing layer 10 for secondary purification, the absorption liquid in the water storage tank 14 flows into the bottom of the spray tower 1, the spray pump 5 is started, the spray pump 5 pumps out the absorption liquid through the input pipe 7, and transports it to the annular pipe 2 through the output pipe 6, and then inputs it to the inner top of the spray tower 1 through the elbow connecting pipe 3 and the branch pipe 4, and starts the DC motor 804, which drives the active bevel gear 80 5 rotates, driving the driven bevel gear 803 and the movable ring 802 to rotate, and the movable ring 802 will drive the spur gear 806 to rotate with it, and through the meshing with the pinion 808, drive the rotating shaft 807 and the cross plate 809 to rotate at a high speed, and the cross plate 809 will break the input absorption liquid into fine water droplets to form a high-speed water flow gas, and the gas and liquid will collide with each other, so that the absorption liquid and the exhaust gas are fully contacted and mixed, thereby improving the treatment effect. The treated gas is defogged by the flat plate demister 11 and finally discharged through the flue gas outlet 12, and the absorption liquid will return to the inner bottom of the spray tower 1 for recycling.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spraying device, comprising a spraying tower (1), characterized in that: An annular tube (2) is fixedly mounted on the outer diameter of the upper side of the spray tower (1) through a bracket, a plurality of elbow connecting tubes (3) are evenly mounted on the outer end of the annular tube (2), a branch tube (4) is mounted at the end of each elbow connecting tube (3), the end of each branch tube (4) penetrates the outer wall of the spray tower (1) and extends to the inside, a snail nozzle is mounted at the end of each branch tube (4), and an auxiliary mechanism (8) is provided on the upper inner side of the spray tower (1); The auxiliary mechanism (8) comprises an annular fixing plate (801), wherein the annular fixing plate (801) is fixedly connected to the inner upper side of the spray tower (1), a movable ring (802) is movably connected to the middle part of the annular fixing plate (801), a spur gear (806) is fixedly connected to the bottom end of the movable ring (802), a plurality of rotating shafts (807) are evenly movably connected to the bottom end of the annular fixing plate (801), a pinion gear (808) is fixedly connected to the upper outer diameter of the rotating shaft (807), the inner end of the pinion gear (808) is meshed and connected to the outer side of the spur gear (806), and a cross plate (809) is fixedly connected to the bottom end of the rotating shaft (807).

2. A spray device according to claim 1, characterized in that: A spray pump (5) is installed on one side of the spray tower (1), the output end of the spray pump (5) is fixedly connected to an output pipe (6), and the end of the output pipe (6) is fixedly connected to one side of the bottom end of the annular pipe (2).

3. A spray device according to claim 2, characterized in that: The input end of the spray pump (5) is fixedly connected to an input pipe (7), the end of the input pipe (7) passes through the outer wall of the spray tower (1) and extends to the inner bottom thereof, a water storage tank (14) is provided at the rear side of the spray tower (1), and the bottom end of the water storage tank (14) is connected to the inner top of the spray tower (1) through a pipeline.

4. A spray device according to claim 1, characterized in that: A first packing layer (9) is fixedly connected to the inner middle of the spray tower (1), a second packing layer (10) is fixedly connected to the upper side of the first packing layer (9) inside the spray tower (1), and a flat plate demister (11) is fixedly connected to the inner top of the spray tower (1).

5. A spray device according to claim 1, characterized in that: The top of the spray tower (1) is provided with a smoke outlet (12), and one side of the bottom of the spray tower (1) is provided with a smoke inlet (13).

6. A spray device according to claim 1, characterized in that: The top of the movable ring (802) is fixedly connected to a driven bevel gear (803), a DC motor (804) is installed on one side of the top of the spray tower (1), a driving end of the DC motor (804) passes through the outer wall of the spray tower (1) and is fixedly connected to a driving bevel gear (805), and the bottom of the driving bevel gear (805) is meshedly connected to one side of the top of the driven bevel gear (803).

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