CN209758518U - A negative pressure conveying system for powder is stored - Google Patents

Abstract

The utility model provides a negative pressure transportation system for powder storage, including raw material barrel, grader and the storage bucket that connects gradually, raw material barrel and grader bottom are the air-supply line that the level set up, one end is opened among them to put through outside air for the air-supply line, and the other end extends to be connected to the below of grader, and the top in the middle of the air-supply line still is equipped with the opening and links to each other with the bottom of raw material barrel; the bottom of the storage barrel is connected with the top end of the grader through a pipeline, and the top of the storage barrel is provided with a negative pressure pipe connected to the fan; the utility model discloses use the fan to go out the side convulsions from the negative pressure pipe, produce the negative pressure and then attract the powder to remove in the negative pressure pipe, can not increase container internal pressure because of negative pressure system, consequently be difficult to appear leaking and the condition of raise dust, extravagant product and dust pollution's problem can not appear, and the dust moving direction is more concentrated, and classification efficiency is higher, also is difficult to block up.

Description

A negative pressure conveying system for powder is stored

Technical Field

The utility model relates to a powder production and storage technical field, concretely relates to a negative pressure conveying system for powder is stored.

background

The manufacture of powder is an important part in modern industry, and various ores such as calcium carbonate, barium sulfate and the like need to be prepared into powder by preprocessing and then processed subsequently when being subjected to fine processing. Meanwhile, the fine development of modern industry also continuously increases the requirements on powder products.

after the powder is ground and processed, classified storage is needed, so that powder products with different fineness are stored in respective storage barrels, in the process, in order to ensure the movement of the powder products and place blockage, a blowing mode is usually used, the powder is pushed to advance by wind power, and then screening and classification are carried out through devices such as a sieve plate. However, the method has certain problems, one of which is that the wind-driven method itself can cause the pressure inside the pipeline and the storage device to be too high, which is easy to cause powder leakage and dust emission, not only wastes the product, but also pollutes the air; the second is that the screening and grading are carried out by using a sieve plate from top to bottom by using the action of gravity, but when the powder is very fine, the mass of the powder is extremely low, the efficiency is very low during gravity screening, and the powder is easy to block.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a negative pressure transportation system for powder storage, which is used for solving the problems that the powder product is provided with power to push the powder product to move by adopting a blowing mode in the prior art, so that the internal pressure of a pipeline and a storage device is overlarge, powder leakage and dust raising are caused, and the powder product is wasted and air is polluted; still solved and adopted the sieve to utilize gravity to screen among the prior art, low to the powder screening efficiency that the granule is minimum, still take place the problem of jam easily.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a negative pressure transportation system for powder storage comprises a raw material barrel, a grader and a storage barrel which are connected in sequence, wherein the raw material barrel and the grader are arranged at the same horizontal height, and the storage barrel is arranged right above the grader; the bottom parts of the raw material barrel and the grader are horizontally arranged air inlet pipes, one end of each air inlet pipe is opened to be communicated with external air, the other end of each air inlet pipe extends to be connected to the lower part of the grader, and the top part in the middle of each air inlet pipe is provided with an opening to be connected with the bottom part of the raw material barrel; the bottom of the storage barrel is connected with the top end of the grader through a pipeline, a negative pressure pipe is arranged at the top of the storage barrel and connected to a fan, and the fan generates wind power for drawing away the storage barrel.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. The utility model uses the fan to draw air from the negative pressure pipe to the outside, generates negative pressure in the negative pressure pipe, further generates wind power for attracting powder to move in the raw material barrel, the grader, the storage barrel and the air inlet pipe, so that the powder falls out from the raw material barrel, then sequentially passes through the air inlet pipe and the grader and is finally collected in the storage barrel; the negative pressure system can not increase the internal pressure of the container, so that the conditions of leakage and dust raising are not easy to occur, and the problems of product waste and dust pollution are avoided;

2. The utility model discloses utilize negative pressure system to make the powder up move and carry out the classification under the grader is inside, compare the screening that the tradition utilized gravity, the dust moving direction is more concentrated, and classification efficiency is higher, also is difficult for blockking up.

Drawings

Fig. 1 is a schematic structural view of the present invention;

In the figure: raw material barrel 1, grader 2, storage barrel 3, air inlet pipe 4, negative pressure pipe 5, fan 6, hot-blast main 7, bag collector 31, filter screen 41.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

Example (b):

As shown in FIG. 1, the utility model provides a negative pressure conveying system for powder is stored, including using former storage bucket 1, grader 2 and storage bucket 3 that the pipeline that can ventilate connects gradually, above-mentioned equipment is the partial device in the powder production line of course, and all the other parts that belong to prior art are no longer repeated here.

Wherein the raw material barrel 1 and the grader 2 are arranged at the same horizontal height, and the storage barrel 3 is arranged right above the grader 2; raw materials bucket 1 and grader 2 bottom are the air-supply line 4 of level setting, air-supply line 4 wherein one end opens the switch-on outside air, and the other end extends the below of being connected to grader 2, and the top in the middle of the air-supply line 4 still is equipped with the opening and links to each other with raw materials bucket 1's bottom. The bottom of the storage barrel 3 is connected with the top end of the grader 2 through a pipeline, a negative pressure pipe 5 is arranged at the top of the storage barrel 3 and connected to a fan 6, and the fan 6 generates wind power which is extracted from the storage barrel 3.

in a preferred scheme, the top of the storage barrel 3 is also provided with a bag type dust collector 31, wherein the outlet of the bag type dust collector 31 is connected with the negative pressure pipe 5; therefore, the powder product can be prevented from flowing back to the fan 6 along with the negative pressure pipe 5 to the maximum extent, and the product loss is reduced. Correspondingly, the opening end of the air inlet pipe 4 is also provided with a filter screen 41, so that fine impurities contained in the air are prevented from being mixed into the powder product.

The utility model discloses in, when fan 6 started, produced the pressure towards 6 directions of fan in negative pressure pipe 5 to produce the wind-force towards grader 2, storage bucket 3 by the open one end of air-supply line 4 in whole device. When the powder raw material falls into the air inlet pipe 4 from the bottom of the raw material barrel 1, the powder raw material is driven by wind power to move towards the classifier 2; and (3) screening and grading in the grader 2, wherein the qualified small-particle powder continuously moves from the upper part to enter the storage barrel 3 for storage, and the other part of powder with larger particles is discharged from the bottom of the grader 2 and separately stored.

In the preferred scheme of this embodiment, a branched hot air duct 7 is disposed at the air outlet of the fan 6, the other end of the hot air duct 7 is connected to a position in front of the connection point of the air inlet duct 4 and the raw material barrel 1, and an electric heating wire is disposed in the hot air duct 7. Hot air can be mixed into the air entering the air inlet pipe 4 from the outside through the hot air pipe 7, so that the moisture in the air is reduced, and the problems of caking and the like of powder products are avoided; meanwhile, the air inlet pipe 4 is also the place with the minimum negative pressure, and the hot air pipe 7 can provide wind power in the same direction as the negative pressure to assist in enhancing the air inlet effect.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (4)

1. The utility model provides a negative pressure conveying system for powder is stored which characterized in that: the device comprises a raw material barrel, a grader and a storage barrel which are connected in sequence, wherein the raw material barrel and the grader are arranged at the same horizontal height, and the storage barrel is arranged right above the grader; the bottom parts of the raw material barrel and the grader are horizontally arranged air inlet pipes, one end of each air inlet pipe is opened to be communicated with external air, the other end of each air inlet pipe extends to be connected to the lower part of the grader, and the top part in the middle of each air inlet pipe is provided with an opening to be connected with the bottom part of the raw material barrel; the bottom of the storage barrel is connected with the top end of the grader through a pipeline, a negative pressure pipe is arranged at the top of the storage barrel and connected to a fan, and the fan generates wind power for drawing away the storage barrel.

2. The negative pressure transportation system for powder storage according to claim 1, wherein: the air outlet of the fan is provided with a branched hot air pipe, the other end of the hot air pipe is connected to the position in front of the connecting point of the air inlet pipe and the raw material barrel, and an electric heating wire is arranged in the hot air pipe.

3. the negative pressure transportation system for powder storage according to claim 1, wherein: the top of the storage barrel is also provided with a bag type dust collector, wherein the outlet of the bag type dust collector is connected with the negative pressure pipe.

4. The negative pressure transportation system for powder storage according to claim 1, wherein: and a filter screen is arranged at the opening end of the air inlet pipe.