Circulating feeding device for cement processing

Abstract

The utility model discloses a circulating feeding device for cement processing, and relates to the field of circulating feeding of unqualified powder, the circulating feeding device comprises a material conveying barrel and a ball mill feeding hopper, a feeding pipe protruding upwards is arranged below the periphery of the material conveying barrel, the feeding hopper is integrally formed at the top of the feeding pipe, and the feeding hopper is arranged below the periphery of the material conveying barrel. A discharging pipe protruding downwards is arranged below the periphery of the material conveying barrel, discharging mechanisms are distributed at the bottom end of the discharging pipe and in the ball mill feeding hopper, a material conveying mechanism extending to an inner cavity of the material conveying barrel is installed at one end of the material conveying barrel, and the feeding pipe is located on the periphery of the lower portion of the material conveying barrel. The discharging pipe is located on the periphery of the upper portion of the conveying barrel. According to the utility model, the discharging mechanism is arranged, so that unqualified powder and raw materials to be crushed can be added together without mutual interference, and when the unqualified powder is added, the situation of powder dissipation can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of unqualified powder's circulation feeding, specifically is a kind of recycling feeding device for cement processing. BACKGROUND

[0002] In the production process of cement, raw materials (cement clinker, gypsum and mixed materials according to proportion) need to be fed into ball mill, enter the powder grinding operation, and the unqualified powder is removed after the raw materials after powder grinding are subjected to powder selection step, and then the unqualified powder is added to the ball milling process for regrinding to make it qualified, forming a recycling feeding to avoid waste.

[0003] In the prior art, a screw feeder is generally used to transport unqualified powder. When the powder is added to the ball mill hopper, the powder is easily scattered when being output due to the large size of the ball mill hopper. If the outlet of the output position is matched with the inlet of the ball mill hopper, it will affect the addition of the raw materials waiting for crushing. SUMMARY

[0004] The utility model aims at: in order to solve the problem proposed in the above background art, provide a kind of recycling feeding device for cement processing.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of recycling feeding device for cement processing, including feed cylinder and ball mill hopper, the outer periphery below of the feed cylinder is provided with the feed pipe that protrudes upwards, the top of the feed pipe is integrally formed with feed hopper, the outer periphery below of the feed cylinder is provided with the discharge pipe that protrudes downwards, the bottom of the discharge pipe is distributed with discharge mechanism in the inner portion of the ball mill hopper, one end of the feed cylinder is equipped with the feed mechanism that extends to the inner chamber of the feed cylinder, the feed pipe is located below the outer periphery of the feed cylinder, the discharge pipe is located above the outer periphery of the feed cylinder.

[0006] As a further scheme of the utility model: the feed mechanism includes rotary motor installed at the lower end of the feed cylinder, the output end of the rotary motor penetrates to the inner chamber of the feed cylinder, the output shaft of the rotary motor is rotatably connected with the feed cylinder, the helical feed rod is rotatably installed in the interior of the feed cylinder, and the lower end of the helical feed rod is fixedly connected with the output end of the rotary motor.

[0007] As a further scheme of the utility model: the discharge mechanism includes discharge nozzle connected to the output end of the discharge pipe, the discharge nozzle and the discharge pipe are connected with the transition nozzle structure that upper circle lower side of the board part, the lower half of the discharge nozzle is hollow square structure.

[0008] As a further scheme of the utility model: the discharge mechanism further includes a partition plate installed above the inner wall of the ball mill feeding hopper, the partition plate divides the upper half of the inner wall of the ball mill feeding hopper into the coarse raw material feeding port and the circulating material feeding port, the inner wall of the circulating material feeding port is in line with the lower half of the outer wall of the discharge nozzle.

[0009] As a further scheme of the utility model: the inner wall of the coarse raw material feeding port and the inner wall of the circulating material feeding port are both in communication with the lower half of the inner wall of the ball mill feeding hopper.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] 1. By setting the discharge mechanism, the unqualified powder and the waiting broken raw material can be added together, and the mutual interference does not occur, and when the unqualified powder is added, the powder escaping can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is the structural schematic diagram of the utility model;

[0013] Fig. 2 It is the internal structure schematic diagram of the utility model;

[0014] Fig. 3 It is the discharge mechanism schematic diagram of the utility model.

[0015] In the drawing: 1, material conveying cylinder; 2, rotating motor; 3, feeding pipe; 4, feeding hopper; 5, discharge pipe; 6, discharge nozzle; 7, ball mill feeding hopper; 8, coarse raw material feeding port; 9, spiral material conveying rod; 10, circulating material feeding port; 11, partition plate. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0017] Please refer to Figs. 1-3The utility model discloses a kind of circulating feeding devices for cement processing, including feed cylinder 1 and ball mill feed hopper 7, the outer periphery below of feed cylinder 1 is provided with the feed pipe 3 that protrudes upwards, the top of feed pipe 3 is integrally formed with feed hopper 4, the outer periphery below of feed cylinder 1 is provided with the discharge pipe 5 that protrudes downwards, the bottom end of discharge pipe 5 is distributed with discharge mechanism in ball mill feed hopper 7, one end of feed cylinder 1 is equipped with the feed mechanism extending to the inner chamber of feed cylinder 1, feed pipe 3 is located below the outer periphery of feed cylinder 1, discharge pipe 5 is located above the outer periphery of feed cylinder 1.

[0018] In the embodiment: first, unqualified powder selected by powder classifier is added to feed hopper 4, unqualified powder falls to feed cylinder 1 by feed hopper 4 and by feed pipe 3, at this time, the feed mechanism running drives unqualified powder in feed cylinder 1 to move along the inner wall of feed cylinder 1, until unqualified powder reaches above feed cylinder 1 and is located at the entrance position of discharge pipe 5, at this time, unqualified powder falls along discharge pipe 5, and falls into ball mill feed hopper 7 by discharge mechanism, and enters ball mill along ball mill feed hopper 7, and is crushed again, this kind of design can realize the circulation of unqualified powder after being selected, realize the crushing feeding effect in cement production process, and prevent powder from overflowing outwardly during the entry of unqualified powder.

[0019] Please refer to Fig. 1 With Fig. 2 Feed mechanism includes rotary motor 2 installed at the lower end of feed cylinder 1, the output end of rotary motor 2 penetrates to the inner chamber of feed cylinder 1, the output shaft of rotary motor 2 is rotatably connected with feed cylinder 1, and the inside of feed cylinder 1 is rotatably installed with spiral feed rod 9, and the lower end of spiral feed rod 9 is fixedly connected with the output end of rotary motor 2.

[0020] In the embodiment: by starting rotary motor 2, rotary motor 2 drives spiral feed rod 9 to rotate, the diameter of the spiral part of spiral feed rod 9 is equal to the inner diameter of feed cylinder 1, so that the residual phenomenon of unqualified powder in feed cylinder 1 can be avoided, the spiral part rotates, can drive powder to move along the inner wall of feed cylinder 1, and the two ends of the rod part of spiral feed rod 9 are rotatably connected with the two end plates of feed cylinder 1 through bearings.

[0021] Please refer to Fig. 2 With Fig. 3The discharging mechanism comprises a discharging nozzle 6 connected to the output end of the discharging pipe 5, the discharging nozzle 6 is connected to the discharging pipe 5 and has a boat-shaped transition nozzle structure with an upper round and a lower square, the lower half of the discharging nozzle 6 has a hollow square structure, the discharging mechanism further comprises a partition plate 11 installed above the inner wall of the ball mill feeding hopper 7, the partition plate 11 divides the upper half of the inner wall of the ball mill feeding hopper 7 into the coarse raw material feeding port 8 and the circulating material feeding port 10, and the inner wall of the circulating material feeding port 10 is matched with the outer wall of the lower half of the discharging nozzle 6.

[0022] In the embodiment, when the unqualified powder enters the discharging nozzle 6 through the discharging pipe 5, the unqualified powder first falls along the upper half of the discharging nozzle 6, the upper half of the discharging nozzle 6 has an upper round and a lower square structure, and the inner wall of the discharging nozzle 6 forms a good transition surface, so that the resistance of the powder during falling can be reduced, thereby providing better movement guidance for the powder, when the powder falls through the upper half of the discharging nozzle 6 to the lower half, the powder directly enters the circulating material feeding port 10, because the ball mill is always ventilated during operation to realize separation, therefore, when the powder enters the circulating material feeding port 10, the powder will not overflow under the action of negative pressure, and the powder is directly introduced into the ball mill under the negative pressure, so that the overflow of the unqualified powder is avoided, and the hollow square structure of the lower half of the discharging nozzle 6 can avoid the overflow of the powder.

[0023] Please refer to Fig. 2 and Fig. 3 The inner wall of the coarse raw material feeding port 8 and the inner wall of the circulating material feeding port 10 are both connected to the lower half of the inner wall of the ball mill feeding hopper 7.

[0024] In the embodiment, the design does not affect the addition of unbroken raw materials into the ball mill when the unqualified powder is added, and the overflow phenomenon caused by the mutual impact of the two kinds of raw materials during simultaneous addition is avoided, or the problem that the unbroken raw materials are not easily added during the addition of the powder is avoided.

[0025] The above only describes the preferred embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the technical field according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model can make equivalent replacement or change, and all of them should be covered in the protection scope of the utility model.

Claims

1. A circulating material feeding device for cement processing, comprising a feeding cylinder (1) and a ball mill feeding hopper (7), characterized in that, The outer periphery of the feeding cylinder (1) is provided with an upwardly protruding feeding pipe (3), the top of which is integrally formed with a feeding hopper (4), the outer periphery of the feeding cylinder (1) is provided with a downwardly protruding discharging pipe (5), the bottom end of which is distributed with a discharging mechanism in the inner part of the ball mill feeding hopper (7), one end of the feeding cylinder (1) is provided with a feeding mechanism extending into the inner cavity of the feeding cylinder (1), the feeding pipe (3) is located below the outer periphery of the feeding cylinder (1), and the discharging pipe (5) is located above the outer periphery of the feeding cylinder (1).

2. The circulating material feeding device for cement processing according to claim 1, characterized in that, The feeding mechanism comprises a rotary motor (2) installed at the lower end of the feeding cylinder (1), the output end of the rotary motor (2) penetrates into the inner cavity of the feeding cylinder (1), the output shaft of the rotary motor (2) is rotationally connected with the feeding cylinder (1), and a spiral feeding rod (9) is rotationally installed in the feeding cylinder (1).

3. The circulating material feeding device for cement processing according to claim 1, characterized in that, The discharging mechanism comprises a discharging nozzle (6) connected to the output end of the discharging pipe (5), the discharging nozzle (6) and the paddle part connected with the discharging pipe (5) are transition nozzle structures with upper round and lower square, and the lower half of the discharging nozzle (6) is a hollow square structure.

4. The recirculating material feeder for cement processing according to claim 3, wherein The discharging mechanism further comprises a partition plate (11) installed on the upper inner wall of the ball mill feeding hopper (7), the partition plate (11) separates the upper half of the inner wall of the ball mill feeding hopper (7) into a coarse raw material feeding port (8) and a circulating material feeding port (10), and the inner wall of the circulating material feeding port (10) is in line with the outer wall of the lower half of the discharging nozzle (6).

5. The recirculating material feeder for cement processing according to claim 4, wherein The inner wall of the coarse raw material feeding port (8) and the inner wall of the circulating material feeding port (10) are both in communication with the lower half of the inner wall of the ball mill feeding hopper (7).

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