Fly ash washing and evaporative crystallization equipment

Abstract

The utility model provides fly ash washing and evaporative crystallization equipment, which belongs to the technical field of fly ash treatment, and comprises a heating base, a crystallization barrel is fixedly connected above the heating base, a washing barrel is fixedly connected above the crystallization barrel, and a rotating shaft is rotatably connected in the washing barrel; and each stirring and mixing assembly comprises a hollow stirring rod fixedly connected to the rotating shaft, and a sleeve rod is slidably connected into the hollow stirring rod. According to the fly ash washing device, while the hollow stirring rod is driven to rotate to stir and mix fly ash mixed liquid, the fly ash mixed liquid close to the inner wall of the washing cylinder is uniformly stirred by driving the auxiliary stirring plate, so that the mixing uniformity of the fly ash mixed liquid and the washing effect of fly ash can be improved; in addition, sufficient crystal scraping operation can be carried out on the interior of the crystallization barrel, subsequent fly ash crystals can be conveniently taken out, and the later cleaning work cost can be easily reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fly ash treatment, in particular to a fly ash washing and evaporation crystallization device. Background Art

[0002] Fly ash refers to tiny ash particles generated when coal or other fuels are burned. The size and volume of fly ash particles are small, so they are very easy to be exposed and float in the air. The volume of fly ash generated in coal-fired plants is relatively high, so strict collection and treatment are required to avoid fly ash being exposed to the air and causing harm to people's health.

[0003] The existing technology often has the following problems when used:

[0004] 1. Due to the small volume of fly ash particles, the fly ash needs to be stirred during the mixing process with water to ensure the washing effect of the fly ash. However, during the mixing process of fly ash and water, the mixing effect of the mixed liquid close to the inner wall of the container is weak, resulting in the fly ash not being fully and evenly mixed;

[0005] 2. After the fly ash is washed with water and evaporated, the temperature rise rate inside the fly ash mixture is slow, resulting in low evaporation and crystallization efficiency of the fly ash mixture, and its crystals will precipitate on the inner wall surface and the inner bottom surface of the container. After the evaporation and crystallization are completed, it is not convenient to take out the crystallized product, which increases the cost of subsequent cleaning work. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a fly ash washing and evaporation crystallization device.

[0007] The embodiment of the utility model provides a fly ash washing and evaporation crystallization device, comprising:

[0008] A heating base, a crystallization cylinder is fixedly connected to the top of the heating base, a water washing cylinder is fixedly connected to the top of the crystallization cylinder, and a rotating shaft is rotatably connected inside the water washing cylinder;

[0009] A plurality of stirring and mixing components, each of which comprises a hollow stirring rod fixedly connected to a rotating shaft, a sleeve rod slidably connected inside the hollow stirring rod, a counterweight block fixedly connected to the end of the sleeve rod, and two auxiliary stirring plates fixedly connected to the counterweight block;

[0010] An auxiliary crystallization component includes a heat-conducting tube fixedly connected to the lower end of the rotating shaft, the lower end of the heat-conducting tube is rotatably connected to the hot air port of the heating base through a sealed bearing, the upper and lower ends of the heat-conducting tube are fixedly connected to support plates, and the bottom of the support plate located at the lower end of the heat-conducting tube is fixedly connected to a first scraper.

[0011] Furthermore, a rotary motor is fixedly connected to the top of the water washing cylinder, and the upper end of the rotating shaft passes through the top of the water washing cylinder and is fixedly connected to the output end of the rotary motor.

[0012] Furthermore, a tension spring is fixedly connected to the inner bottom surface of the hollow stirring rod, and an end of the tension spring is fixedly connected to an end of the sleeve rod.

[0013] Furthermore, a rotating rod is rotatably connected between the two support plates, a plurality of second scrapers are fixedly connected to the outer wall of the rotating rod, a small transmission gear is fixedly connected to the upper end of the rotating rod, a gear ring is provided on the inner wall of the crystallization tube, and the small transmission gear and the gear ring are meshed with each other.

[0014] Furthermore, a plurality of exhaust holes are provided on the top of the crystallization cylinder, and the plurality of exhaust holes are evenly distributed in a ring shape on the top of the crystallization cylinder.

[0015] Furthermore, a feed pipe is provided at the top of the water washing cylinder, a connecting pipe is provided between the water washing cylinder and the crystallization cylinder, a discharge pipe is provided at the lower end of the side wall of the crystallization cylinder, and solenoid valves are provided at the connecting pipe and the discharge pipe.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model provides a stirring and mixing component, which controls the rotation speed of the rotating shaft and the hollow stirring rod by a rotating motor, so as to adjust the centrifugal force on the counterweight block to drive the counterweight block to move relative to the hollow stirring rod, and then drive the counterweight block to perform high-frequency reciprocating movement by cooperating with the elastic potential energy of the stretching spring, so that the two auxiliary stirring plates on the counterweight block can evenly stir the fly ash mixture close to the inner wall of the washing cylinder, thereby improving the mixing uniformity of the fly ash mixture and the washing effect of the fly ash; and an auxiliary crystallization component is provided, which can fully and evenly heat the fly ash mixture through the heating base and the heat-conducting cylinder, thereby improving the heating rate of the fly ash mixture, and at the same time, the inner bottom surface and the inner wall of the crystallization cylinder can be fully scraped off by the first scraper and several rotating second scrapers, which not only facilitates the removal of fly ash crystals, but also helps to reduce the cost of subsequent cleaning work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a fly ash washing and evaporation crystallization equipment described in an embodiment of the utility model.

[0019] Figure 2 It is a schematic diagram of the internal structure of a fly ash washing and evaporation crystallization equipment described in an embodiment of the utility model.

[0020] Figure 3 for Figure 2 Enlarged view of point A.

[0021] Figure 4 It is a cross-sectional view of the hollow stirring rod part of a fly ash washing and evaporation crystallization equipment described in an embodiment of the utility model.

[0022] In the above drawings: 1 heating base, 2 crystallization cylinder, 3 washing cylinder, 4 rotating shaft, 5 hollow stirring rod, 6 sleeve rod, 7 counterweight, 8 auxiliary stirring plate, 9 heat transfer cylinder, 10 support plate, 11 first scraper, 12 rotating motor, 13 tension spring, 14 second scraper, 15 small transmission gear, 16 gear ring, 17 exhaust hole. DETAILED DESCRIPTION

[0023] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] like Figure 1 and Figure 2 As shown, the embodiment of the utility model proposes a fly ash water washing and evaporation crystallization equipment, including a heating base 1, a plurality of stirring and mixing components and an auxiliary crystallization component: a crystallization cylinder 2 is fixedly connected above the heating base 1, a plurality of exhaust holes 17 are opened on the top of the crystallization cylinder 2, and the plurality of exhaust holes 17 are evenly distributed in a ring shape on the top of the crystallization cylinder 2, a water washing cylinder 3 is fixedly connected above the crystallization cylinder 2, a feed pipe is arranged on the top of the water washing cylinder 3, a connecting pipe is arranged between the water washing cylinder 3 and the crystallization cylinder 2, a discharge pipe is arranged at the lower end of the side wall of the crystallization cylinder 2, and electromagnetic valves are arranged at the connecting pipe and the discharge pipe, a rotating shaft 4 is rotatably connected inside the water washing cylinder 3, a rotating motor 12 is fixedly connected to the top of the water washing cylinder 3, and the upper end of the rotating shaft 4 passes through the top of the water washing cylinder 3 and is fixedly connected to the output end of the rotating motor 12;

[0025] The water washing cylinder 3 and the crystallization cylinder 2 can be connected by the connecting pipe, and the fly ash can quickly enter the evaporation crystallization process after water washing, thereby improving the overall efficiency of fly ash treatment.

[0026] like Figure 2 and Figure 4 As shown, each stirring and mixing assembly includes a hollow stirring rod 5 fixedly connected to a rotating shaft 4, a sleeve rod 6 is slidably connected inside the hollow stirring rod 5, a counterweight block 7 is fixedly connected to the end of the sleeve rod 6, two auxiliary stirring plates 8 are fixedly connected to the counterweight block 7, a tension spring 13 is fixedly connected to the bottom surface of the hollow stirring rod 5, and the end of the tension spring 13 is fixedly connected to the end of the sleeve rod 6;

[0027] Start the rotary motor 12, and drive the rotating shaft 4 and the plurality of hollow stirring rods 5 to rotate through the rotary motor 12. By controlling the different rotation speeds of the rotary motor 12, the centrifugal force exerted on the counterweight 7 can be adjusted, so that the sleeve rod 6 can extend and move relative to the hollow stirring rod 5, and the sleeve rod 6 and the counterweight 7 can be pulled by the elastic potential energy of the tension spring 13, so that the counterweight 7 can achieve high-frequency reciprocating movement, and then the two auxiliary stirring plates 8 on the counterweight 7 can frequently reciprocate, so that the fly ash mixture near the inner wall of the washing drum 3 can be evenly stirred, thereby improving the mixing uniformity of the fly ash mixture and the washing effect of the fly ash.

[0028] like Figure 2 As shown, the auxiliary crystallization assembly includes a heat-conducting tube 9 fixedly connected to the lower end of the rotating shaft 4, and the lower end of the heat-conducting tube 9 is rotatably connected to the hot air port of the heating base 1 through a sealed bearing;

[0029] When the rotating shaft 4 rotates, the heat-conducting tube 9 can be driven to rotate synchronously, so that the heat-conducting tube 9 can rotate relative to the hot gas port of the heating base 1 in a sealed manner. Since the hot gas discharged from the hot gas port of the heating base 1 can be discharged into the heat-conducting tube 9, the fly ash mixture in the crystallization tube 2 can be fully and evenly heated through the cooperation of the heating base 1 and the heat-conducting tube 9, thereby improving the heating rate of the fly ash mixture.

[0030] like Figure 2 As shown, the upper and lower ends of the heat-conducting tube 9 are fixedly connected to support plates 10, and the bottom of the support plate 10 located at the lower end of the heat-conducting tube 9 is fixedly connected to a first scraper 11;

[0031] When the heat-conducting tube 9 rotates, the supporting plate 10 and the first scraper 11 are driven to rotate, and the crystals on the inner bottom surface of the crystallizing tube 2 are scraped off by the first scraper 11 .

[0032] like Figure 2 and Figure 3 As shown, a rotating rod is rotatably connected between the two support plates 10, a plurality of second scrapers 14 are fixedly connected to the outer wall of the rotating rod, a small transmission gear 15 is fixedly connected to the upper end of the rotating rod, a gear ring 16 is provided on the inner wall of the crystallization cylinder 2, and the small transmission gear 15 and the gear ring 16 are meshed with each other;

[0033] Since the small transmission gear 15 at the upper end of the rotating rod is meshed with the gear ring 16, the rotating rod and the plurality of second scrapers 14 on the outer wall thereof begin to rotate, so that the crystals on the inner wall of the crystallization tube 2 can be scraped off by the second scrapers 14, thereby realizing the synchronous scraping operation of the crystals in the crystallization tube 2, which not only facilitates the removal of the fly ash crystals, but also helps to reduce the cost of subsequent cleaning work.

[0034] The detailed working process of the utility model is as follows:

[0035] 1. When the fly ash washing and evaporation crystallization equipment is used, first, the fly ash particles and water flow are passed into the washing cylinder 3 through the feed pipe, so that a fly ash mixed liquid is formed in the washing cylinder 3. At this time, the rotary motor 12 is started, and the rotating shaft 4 and a plurality of hollow stirring rods 5 are driven to rotate by the rotary motor 12. By controlling the different speeds of the rotary motor 12, the centrifugal force exerted on the counterweight 7 can be adjusted, so that the sleeve rod 6 is extended and moved relative to the hollow stirring rod 5, and the sleeve rod 6 and the counterweight 7 can be pulled by the elastic potential energy of the tension spring 13, so that the counterweight 7 can achieve high-frequency reciprocating movement, and then the two auxiliary stirring plates 8 on the counterweight 7 can frequently reciprocate, so that the fly ash mixed liquid close to the inner wall of the washing cylinder 3 can be uniformly stirred, thereby improving the mixing uniformity of the fly ash mixed liquid and the washing effect of the fly ash;

[0036] 2. During the rotation of the rotating shaft 4, the rotating shaft 4 synchronously drives the heat conducting tube 9 to rotate, so that the heat conducting tube 9 rotates relative to the hot gas port of the heating base 1. Since the hot gas discharged from the hot gas port of the heating base 1 can be discharged into the heat conducting tube 9, the fly ash mixture in the crystallization tube 2 can be fully and evenly heated by the cooperation of the heating base 1 and the heat conducting tube 9, thereby improving the heating rate of the fly ash mixture. At the same time, when the heat conducting tube 9 rotates, it drives the supporting plate 10 and the first scraper 11 to rotate, and the crystals on the bottom surface of the crystallization tube 2 are scraped off by the first scraper 11. At this time, the small transmission gear 15 at the upper end of the rotating rod is meshed with the gear ring 16, so that the rotating rod and the plurality of second scrapers 14 on the outer wall thereof start to rotate, so that the crystals on the inner wall of the crystallization tube 2 can be scraped off by the second scraper 14, thereby realizing the synchronous scraping operation of the crystals in the crystallization tube 2, which not only facilitates the removal of the fly ash crystals, but also helps to reduce the cost of later cleaning work.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A fly ash washing and evaporation crystallization equipment, characterized in that: include: A heating base (1), a crystallization cylinder (2) is fixedly connected to the top of the heating base (1), a water washing cylinder (3) is fixedly connected to the top of the crystallization cylinder (2), and a rotating shaft (4) is rotatably connected inside the water washing cylinder (3); A plurality of stirring and mixing assemblies, each of which comprises a hollow stirring rod (5) fixedly connected to a rotating shaft (4), a sleeve rod (6) slidably connected inside the hollow stirring rod (5), a counterweight block (7) fixedly connected to the end of the sleeve rod (6), and two auxiliary stirring plates (8) fixedly connected to the counterweight block (7); An auxiliary crystallization component, the auxiliary crystallization component comprising a heat-conducting tube (9) fixedly connected to the lower end of a rotating shaft (4), the lower end of the heat-conducting tube (9) being rotatably connected to a hot air port of a heating base (1) via a sealed bearing, the upper and lower ends of the heat-conducting tube (9) being fixedly connected to a support plate (10), and the bottom of the support plate (10) located at the lower end of the heat-conducting tube (9) being fixedly connected to a first scraper (11).

2. A fly ash washing and evaporation crystallization equipment according to claim 1, characterized in that: in: The top of the water washing cylinder (3) is fixedly connected to a rotary motor (12), and the upper end of the rotating shaft (4) passes through the top of the water washing cylinder (3) and is fixedly connected to the output end of the rotary motor (12).

3. The fly ash washing and evaporation crystallization equipment according to claim 1, characterized in that: in: A tension spring (13) is fixedly connected to the inner bottom surface of the hollow stirring rod (5), and the end of the tension spring (13) is fixedly connected to the end of the sleeve rod (6).

4. The fly ash washing and evaporation crystallization equipment according to claim 1, characterized in that: in: A rotating rod is rotatably connected between the two support plates (10), a plurality of second scrapers (14) are fixedly connected to the outer wall of the rotating rod, a small transmission gear (15) is fixedly connected to the upper end of the rotating rod, a gear ring (16) is provided on the inner wall of the crystallization cylinder (2), and the small transmission gear (15) and the gear ring (16) are meshed with each other.

5. The fly ash washing and evaporation crystallization equipment according to claim 1, characterized in that: in: A plurality of exhaust holes (17) are provided on the top of the crystallization cylinder (2), and the plurality of exhaust holes (17) are evenly distributed in a ring shape on the top of the crystallization cylinder (2).

6. The fly ash washing and evaporation crystallization equipment according to claim 1, characterized in that: in: A feed pipe is arranged at the top of the water washing cylinder (3), a connecting pipe is arranged between the water washing cylinder (3) and the crystallization cylinder (2), a discharge pipe is arranged at the lower end of the side wall of the crystallization cylinder (2), and electromagnetic valves are arranged at the connecting pipe and the discharge pipe.

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