Mixing and stirring device for phosphogypsum production

Abstract

The utility model discloses a mixing and stirring device for ardealite production, which comprises a stirring tank, a ball-milling mechanism coaxially and rotatably assembled at the top of the stirring tank in a penetrating manner, and a driving mechanism erected on the side of the top of the stirring tank and used for the ball-milling mechanism to act, and the stirring tank comprises a tank body, a cover plate and a stirring paddle, the cover plate is assembled on the top of the tank body in a covering mode and forms a containing cavity in a surrounding mode, the stirring paddle can be rotationally erected in the containing cavity, and an electromagnetic butterfly valve is assembled at the output end of the bottom of the tank body. According to the mixing and stirring device for ardealite production, the ball milling mechanism is arranged at the top of the stirring tank, so that ardealite raw materials input into the stirring tank can be pretreated, large blocky raw materials are prevented from being directly input into the stirring tank, the working load of a stirring paddle is reduced, and meanwhile, the stirring efficiency is remarkably improved; the stirring paddle is coaxially assembled at the bottom of the ball-milling mechanism, and the driving end of the stirring paddle is far away from the bottom of the stirring tank, so that the shaft sticking condition of materials can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of phosphogypsum production, in particular to a mixing and stirring device for phosphogypsum production. Background Art

[0002] Prior art (CN219190725U) discloses a dry powder mixing silo for preparing phosphogypsum boards, comprising a cylindrical mixing silo body and a dry powder mixing mechanism disposed on the mixing silo body; the top of the mixing silo body is provided with phosphogypsum powder inlet interfaces, cement powder inlet interfaces, and slag powder inlet interfaces, respectively, and the bottom of the mixing silo body is provided with a dry powder mixing outlet with a discharge valve; the dry powder mixing mechanism comprises a drive gear disposed at the center below the bottom of the mixing silo body, a pair of driven gears meshing with the drive gear and symmetrically disposed on either side thereof, and a pair of mixing shafts disposed within the mixing silo body and driven for rotation by the pair of driven gears, respectively. The pair of mixing shafts are each provided with a horizontal stirring rod for stirring the dry powder mixture. The advantages of this utility model are: dry powder mixing for preparing phosphogypsum boards is uniform, discharge is convenient, and it is simple and quick to use.

[0003] The existing dry powder mixing silo for preparing phosphogypsum boards has the following problems during use: due to the high water content of the phosphogypsum raw material, it is more likely to stick to the shaft during the mixing process. Since its driving end is set at the bottom of the mixing silo body, there may be a problem of material sticking to the shaft. Material sticking to the shaft will make it difficult for the equipment to rotate, reducing the production efficiency of the equipment. At the same time, it will also aggravate the wear of the shaft and shorten the service life of the equipment. In severe cases, it may cause equipment failure and even cause safety accidents. Utility Model Content

[0004] The utility model aims to solve the above-mentioned technical problems existing in the prior art and provides a mixing and stirring device for phosphogypsum production, which solves the problem of material sticking to the shaft easily occurring in the current phosphogypsum stirring device due to the high water content of the phosphogypsum raw material.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: the present invention provides a mixing and stirring device for phosphogypsum production, comprising a stirring tank and a ball milling mechanism that coaxially rotates and is assembled through the top of the stirring tank, and a driving mechanism mounted on the side of the top of the stirring tank for supplying movement to the ball milling mechanism. The stirring tank comprises a tank body, a cover plate and a stirring paddle. The cover plate coaxially covers and is assembled on the top of the tank body to form a accommodating chamber for the stirring paddle to rotate and be mounted. The output end of the bottom of the tank body is equipped with an electromagnetic butterfly valve. The ball milling mechanism comprises a cylinder body and a conical mesh bucket arranged at the bottom of the cylinder body. The conical mesh bucket is integrally connected to the cylinder body and forms a grinding chamber for containing phosphogypsum raw materials and steel balls. A large gear is coaxially sleeved on the bottom of the outer wall of the cylinder body. The stirring paddle is coaxially assembled at the bottom of the conical mesh bucket. The driving mechanism comprises a bracket. A first motor is fixedly mounted on the top of the bracket. The output end of the first motor passes through the bracket and is coaxially assembled with a small gear that meshes with the large gear for transmission.

[0006] Preferably, the stirring paddle comprises a shaft, with a plurality of paddles arranged in a circular array mounted on the outer wall of the shaft via a plurality of connecting rods. The outer edges of the paddles are adapted to fit snugly against the inner wall of the tank, allowing the rotation of the stirring paddle to scrape off any phosphogypsum adhering to the inner wall of the tank. Specifically, the paddles are mounted on the outer side of the shaft via a plurality of connecting rods, with the paddles being inserted into the outer ends of the connecting rods, which are screwed to the paddles. The connecting rods are detachable, facilitating subsequent replacement and maintenance of the paddles.

[0007] Preferably, the top end of the shaft extends into the interior of the conical mesh bucket and is provided with a plug, the top of which is a conical structure. The conical mesh bucket serves to discharge and screen the phosphogypsum raw material, and the top flange of the shaft is mounted on the bottom of the conical mesh bucket. Preferably, the plug extending into the conical mesh bucket prevents residual accumulation of phosphogypsum raw material at the bottom of the conical mesh bucket.

[0008] Preferably, the mixing tank further includes an auxiliary feed rack mounted on the top of the mixing tank and connected to the feed port of the cylinder. The auxiliary feed rack comprises a support plate mounted above the cylinder via four columns. A feed pipe is welded vertically through the support plate, and the bottom end of the feed pipe extends into the interior of the cylinder. Since the feed end is typically fed directly by pipe-end docking, and the rotating cylinder cannot be adapted to dock with a fixed feed pipe, the provision of the auxiliary feed rack preferably helps ensure the sealing of the feed end.

[0009] Preferably, a first retaining ring is coaxially provided at the bottom of the outer wall of the cylinder, and a second retaining ring is coaxially provided at the top of the inner wall of the cylinder. The bottom end of the cylinder is rotatably connected to the end plate via an external bearing, and the top end of the cylinder is rotatably connected to the feed pipe via an internal bearing. The first retaining ring provides position-limiting support for the coaxial sleeve of the large gear and can also cover the top of the bearing, providing effective protection for the bearing at the bottom. The second retaining ring provides position-limiting support for the bearing at the top.

[0010] Preferably, the unloading mechanism is mounted below the mixing tank and connected to the electromagnetic butterfly valve. The unloading mechanism includes a feed pipe, a second motor, and a screw conveyor. The top of the feed pipe is provided with a connection port for the electromagnetic butterfly valve flange assembly. One end of the feed pipe is coaxially covered with an end plate for the second motor. The output end of the second motor passes through the end plate and is fixedly connected to the screw conveyor. The unloading mechanism is connected to the output end of the electromagnetic butterfly valve to facilitate the unloading of the stirred phosphogypsum. Specifically, the stirred phosphogypsum enters the feed pipe through the output end of the tank body and the electromagnetic butterfly valve in turn. Driven by the second motor, the screw conveyor rotates, which can drive the phosphogypsum in the feed pipe to spiral forward and finally be discharged through the discharge port. The design of the unloading mechanism can effectively avoid material discharge blockage.

[0011] Therefore, the utility model has the following beneficial effects: by arranging a ball milling mechanism on the top of the stirring tank, the phosphogypsum raw materials input into the stirring tank can be pretreated, avoiding large block raw materials from being directly put into the stirring tank, reducing the workload of the stirring paddle, and at the same time, significantly improving the stirring efficiency. In addition, the stirring paddle is coaxially assembled at the bottom of the ball milling mechanism, and its driving end is away from the bottom of the stirring tank, which can effectively avoid the occurrence of material sticking to the shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of an embodiment of the present utility model.

[0013] Figure 2 This is a structural diagram of the stirring tank of the utility model.

[0014] Figure 3 It is a structural diagram of the ball milling mechanism of the utility model.

[0015] Figure 4 It is a structural diagram of the driving mechanism of the utility model.

[0016] Figure 5 This is a structural diagram of the auxiliary feeding rack of the utility model.

[0017] Figure 6 It is a structural schematic diagram of the cylinder of the utility model.

[0018] Figure 7This is a schematic structural diagram of the stirring paddle of the utility model.

[0019] Figure 8 It is a structural diagram of the unloading mechanism of the utility model.

[0020] In the figure: 100, mixing tank; 110, tank body; 120, cover plate; 130, stirring paddle; 140, electromagnetic butterfly valve; 1310, shaft; 1320, connecting rod; 1330, paddle; 1340, plug; 200, ball mill mechanism; 210, cylinder; 220, conical mesh bucket; 230, large gear; 2110, first retaining ring; 2120, second retaining ring; 300, driving mechanism; 310, bracket; 320, first motor; 330, small gear; 400, auxiliary feeding rack; 410, column; 420, support plate; 430, feeding pipe; 500, unloading mechanism; 510, conveying pipe; 520, second motor; 530, screw conveying paddle; 540, connecting port; 550, end plate. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] See also Figure 1-8 A mixing and stirring device for phosphogypsum production includes a mixing tank 100 and a ball milling mechanism 200 coaxially rotating and penetrating the top of the mixing tank 100, and a driving mechanism 300 mounted on the side of the top of the mixing tank 100 for the ball milling mechanism 200 to move. The mixing tank 100 includes a tank body 110, a cover plate 120 and a stirring paddle 130. The cover plate 120 coaxially covers and is mounted on the top of the tank body 110 to form a accommodating cavity for the stirring paddle 130 to rotate and mount. The output end of the bottom of the tank body 110 is equipped with an electromagnetic butterfly valve 140. The ball milling mechanism 200 includes a cylinder The cylindrical body 210 and the conical mesh bucket 220 are provided at the bottom of the cylindrical body 210. The conical mesh bucket 220 is integrally connected to the cylindrical body 210 and forms a grinding chamber for containing phosphogypsum raw materials and steel balls. A large gear 230 is coaxially sleeved on the bottom of the outer wall of the cylindrical body 210. The stirring paddle 130 is coaxially assembled on the bottom of the conical mesh bucket 220. The driving mechanism 300 includes a bracket 310. A first motor 320 is fixedly installed on the top of the bracket 310. The output end of the first motor 320 passes through the bracket 310 and is coaxially assembled with a small gear 330 that meshes with the large gear 230 for transmission.

[0023] Based on the above-mentioned structural setting, the mixing and stirring device for phosphogypsum production includes a mixing tank 100, a ball milling mechanism 200 and a driving mechanism 300, wherein the ball milling mechanism 200 is rotatably mounted on the top of the mixing tank 100 and is used to pre-grind the phosphogypsum raw materials input into the mixing tank 100, and the driving mechanism 300 provides drive for the rotation of the ball milling mechanism 200. Specifically, during operation, the phosphogypsum raw materials are input from the opening at the top of the cylinder 210. With the start of the first motor 320, the cylinder 210 and the conical mesh bucket 220 rotate on the cover plate 120 with the help of the meshing transmission pinion 330 and the large gear 230. With the cooperation of the steel balls, the phosphogypsum raw materials entering the cylinder 210 and the conical mesh bucket 220 can be crushed and ground. The crushed and ground phosphogypsum raw materials can fall into the mixing tank 100 through the mesh holes of the conical mesh bucket 220. The larger volume of agglomerated phosphogypsum raw materials cannot pass through the mesh holes of the conical mesh bucket 220 until they are completely crushed. After ball milling, the structure of the phosphogypsum can be changed, the particle morphology can be diversified, and the defects of high porosity and loose structure of the hardened body can be improved. The phosphogypsum raw materials falling into the mixing tank 100 can be further stirred as the stirring paddle 130 rotates. The mixing and stirring device for phosphogypsum production is provided with a ball milling mechanism 200 on the top of the mixing tank 100, which can pre-treat the phosphogypsum raw materials input into the mixing tank 100, avoid large block raw materials from being directly put into the mixing tank 100, reduce the workload of the stirring paddle 130, and significantly improve the stirring efficiency. In addition, the stirring paddle 130 is coaxially assembled at the bottom of the ball milling mechanism 200, and its driving end is away from the bottom of the mixing tank 100, which can effectively avoid the occurrence of material sticking to the shaft.

[0024] Furthermore, the stirring paddle 130 includes a shaft 1310 , and a plurality of blades 1330 distributed in a ring array are respectively mounted on the outer wall of the shaft 1310 through a plurality of connecting rods 1320 .

[0025] Furthermore, the top end of the shaft 1310 extends to the interior of the conical mesh bucket 220 and is provided with a plug 1340 , and the top of the plug 1340 is configured as a conical structure.

[0026] Furthermore, it also includes an auxiliary feeding rack 400 assembled on the top of the mixing tank 100 and connected to the feed port of the cylinder 210. The auxiliary feeding rack 400 includes a support plate 420 erected above the cylinder 210 through four columns 410. A feeding pipe 430 is welded vertically through the support plate 420, and the bottom end of the feeding pipe 430 extends to the interior of the cylinder 210.

[0027] Furthermore, a first retaining ring 2110 is coaxially provided at the bottom of the outer wall of the cylinder 210 , and a second retaining ring 2120 is coaxially provided at the top of the inner wall of the cylinder 210 .

[0028] Furthermore, it also includes a unloading mechanism 500 mounted under the mixing tank 100 and connected to the electromagnetic butterfly valve 140. The unloading mechanism 500 includes a feed pipe 510, a second motor 520 and a screw conveying paddle 530. The top of the feed pipe 510 is provided with a connection port 540 for flange assembly of the electromagnetic butterfly valve 140. One end of the feed pipe 510 is coaxially covered with an end plate 550 for installation of the second motor 520. The output end of the second motor 520 passes through the end plate 550 and is fixedly connected to the screw conveying paddle 530.

[0029] The embodiment described above is only a preferred solution of the present invention and does not limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A mixing and stirring device for producing phosphogypsum, comprising a mixing tank (100) and a ball milling mechanism (200) coaxially rotating and penetrating the top of the mixing tank (100), and a driving mechanism (300) mounted on the side of the top of the mixing tank (100) for driving the ball milling mechanism (200); the mixing tank (100) comprises a tank body (110), a cover plate (120) and a stirring paddle (130); the cover plate (120) coaxially covers and is mounted on the top of the tank body (110) to enclose a receiving cavity for the stirring paddle (130) to be rotatably mounted; an electromagnetic butterfly valve (140) is mounted on the output end of the bottom of the tank body (110), and the device is characterized in that: The ball mill mechanism (200) comprises a cylinder (210) and a conical mesh bucket (220) provided at the bottom of the cylinder (210); the conical mesh bucket (220) is integrally connected to the cylinder (210) and forms a grinding chamber for containing phosphogypsum raw materials and steel balls; a large gear (230) is coaxially sleeved on the bottom of the outer wall of the cylinder (210); and the stirring paddle (130) is coaxially assembled on the bottom of the conical mesh bucket (220); the driving mechanism (300) comprises a bracket (310); a first motor (320) is fixedly mounted on the top of the bracket (310); an output end of the first motor (320) passes through the bracket (310) and is coaxially assembled with a small gear (330) that meshes with the large gear (230) for transmission.

2. A mixing and stirring device for phosphogypsum production according to claim 1, characterized in that: The stirring paddle (130) comprises a shaft (1310), and a plurality of blades (1330) distributed in a ring array are respectively mounted on the outer wall of the shaft (1310) via a plurality of connecting rods (1320).

3. A mixing and stirring device for phosphogypsum production according to claim 2, characterized in that: The top end of the shaft (1310) extends to the interior of the conical mesh bucket (220) and is provided with a plug (1340), and the top of the plug (1340) is configured as a conical surface structure.

4. A mixing and stirring device for phosphogypsum production according to claim 1, characterized in that: The invention also includes an auxiliary feeding frame (400) mounted on the top of the mixing tank (100) and connected to the feeding port of the cylinder (210), wherein the auxiliary feeding frame (400) includes a support plate (420) mounted on the cylinder (210) via four columns (410), and a feeding pipe (430) is vertically penetrated and welded on the support plate (420), and the bottom end of the feeding pipe (430) extends into the interior of the cylinder (210).

5. A mixing and stirring device for phosphogypsum production according to claim 1, characterized in that: A first retaining ring (2110) is coaxially provided at the bottom of the outer wall of the cylinder (210), and a second retaining ring (2120) is coaxially provided at the top of the inner wall of the cylinder (210).

6. A mixing and stirring device for phosphogypsum production according to claim 1, characterized in that: The invention also includes a discharge mechanism (500) mounted below the mixing tank (100) and connected to the electromagnetic butterfly valve (140), wherein the discharge mechanism (500) includes a feed pipe (510), a second motor (520) and a screw conveying paddle (530), wherein the top of the feed pipe (510) is provided with a connection port (540) for flange assembly of the electromagnetic butterfly valve (140), and one end of the feed pipe (510) is coaxially covered with an end plate (550) for mounting the second motor (520), and the output end of the second motor (520) passes through the end plate (550) and is fixedly connected to the screw conveying paddle (530).

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