Device for cleaning powder on inner wall of powder production equipment

Abstract

According to the cleaning device for the powder on the inner wall of the powder production equipment, the three pipeline branches are arranged and comprise the two air inlet pipeline branches and the air outlet pipeline branch, and the three-way ball valve is arranged at the communicating position of the three pipeline branches, so that the working state and the standby state of the cleaning device for the powder on the inner wall of the powder production equipment can be freely switched; two different air inlet pipeline branches are opened in the working state and the standby state respectively, one air inlet pipeline branch provides high-pressure air to clean the inner wall in the working state, and the other air inlet pipeline branch provides a small amount of air to prevent air holes from being blocked in the standby state. In addition, a plurality of rows of air outlet holes are distributed in the air outlet pipeline branch, an included angle is formed between the center line of each air outlet hole and the central axis of the air outlet pipeline branch, and the included angle becomes smaller along with increasing of the distance from the air outlet of the air outlet pipeline branch, so that powder on the inner wall is better cleaned, and the problem that powder on the inner wall of equipment is difficult to clean is solved; and the powder is prevented from polluting air, and water resource waste caused by water washing is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of material cleaning devices, in particular to a powder cleaning device for the inner wall of powder production equipment. Background Art

[0002] Traditional powder production equipment, such as crushing equipment, grading equipment, and mixing equipment, all have the problem of powder sticking to the wall during the production process. Cleaning the interior of these equipment and removing the sticky powder is a major problem in actual production. If the cleaning is not thorough, it will contaminate other powders using this equipment, resulting in waste of resources and increased costs.

[0003] Currently, there are two main methods for cleaning equipment: one is to use an air gun to directly blow away the powder after disassembling the equipment. This method will inevitably cause a large amount of powder to spread in the air, not only causing localized excessive PM2.5 levels in the atmosphere and causing harm to the human body; even worse, when the powder concentration in the air exceeds a certain value, it may cause dangerous accidents such as dust explosions when exposed to open flames or sparks. The other method is to use water to clean the inner walls of the equipment. This method not only consumes a lot of water and wastes water resources, but also requires the treatment of wastewater after cleaning the equipment, which is significantly more expensive.

[0004] Based on this, there is an urgent need for a device that can clean the inside of the equipment and properly deal with the problems of powder diffusion and contamination after cleaning. Utility Model Content

[0005] The utility model discloses a device for cleaning the inner wall of powder production equipment. A certain number of inner wall powder cleaning devices are arranged on the inner side of the equipment. These devices work together to completely clean all powder adhered to the equipment. The cleaned powder is led to a dust collector by a connected induced draft fan for treatment, thereby achieving proper separation of gas and powder and avoiding atmospheric pollution problems caused by powder dispersion.

[0006] A device for cleaning powder on the inner wall of a powder production equipment, comprising:

[0007] a first conduit branch including a first air inlet;

[0008] a second pipe branch, comprising a second air inlet, communicating with the first pipe branch and presenting a U-shape;

[0009] a third pipe branch, which is in communication with the first pipe branch and the second pipe branch and is disposed between the first pipe branch and the second pipe branch, and includes an air outlet located at the end of the third pipe branch away from the first air inlet;

[0010] A three-way ball valve is provided at the intersection of the first pipeline branch, the second pipeline branch and the third pipeline branch. The working state is to open the first pipeline branch and the third pipeline branch, and the standby state is to open the second pipeline branch and the third pipeline branch.

[0011] The third pipeline branch is divided into an inner third pipeline branch and an outer third pipeline branch, and a plurality of air outlets are distributed on the inner third pipeline branch.

[0012] In one embodiment, the air outlet holes are arranged in n rows and p columns, wherein 3≤n≤8, 4≤p≤12, and more preferably 4≤n≤6, 8≤p≤10.

[0013] In one embodiment, the length of the inner third pipe branch is between one third and one half of the third pipe branch.

[0014] In one embodiment, the angle between the center line of the air outlet and the center axis of the third branch pipe is θ, wherein 30°≤θ≤85°.

[0015] In one embodiment, the closer to the air outlet of the third branch pipe, the larger the included angle θ.

[0016] In one embodiment, the air pressure P of the first air inlet is in the range of 0.1 MPa≤P≤1.7 MPa.

[0017] In one embodiment, a flow meter is provided on the second pipeline branch.

[0018] In one embodiment, the flow rate of the flow meter is 0.2-0.8 L / min.

[0019] In one embodiment, the diameter D of the third pipe branch is 8-25 cm, more preferably 10-16 cm.

[0020] In one embodiment, a blind plate is provided at the gas outlet of the third branch pipe, which covers the gas outlet so that the gas can be ejected from the gas outlet to purge the inner wall of the equipment.

[0021] In one embodiment, a dust collecting device for collecting powder is further included.

[0022] When the powder cleaning device for the inner wall of the powder production equipment starts the cleaning mode, the three-way ball valve is adjusted so that the first pipe branch and the third pipe branch are in an open state, and the second pipe branch is in a closed state, thereby completing the cleaning. If the air outlet is blocked during the process, the three-way ball valve is adjusted so that the first pipe branch is in a closed state, and the second pipe branch and the third pipe branch are in an open state. By adjusting the flow rate of the flow meter, the blocked powder is blown away into the dust collection device, and then the three-way ball valve is continued to be adjusted to complete the cleaning of the powder on the inner wall of the equipment.

[0023] When the powder production equipment is in production, the inner wall powder cleaning device is turned on and in standby mode. At this time, the three-way ball valve is adjusted to close the first pipeline branch, and the second pipeline branch and the third pipeline branch are in an open state. By adjusting the flow rate of the flow meter, a small amount of gas is continuously ventilated to the air outlet on the inner third pipeline branch, thereby preventing powder inside the powder production equipment from entering the air outlet and clogging the air outlet, causing malfunctions such as poor or impossible purging.

[0024] Technical effects:

[0025] 1. The device is equipped with two air inlet pipe branches and one air outlet pipe branch, and a three-way ball valve is set at the connection point of the three pipe branches to switch the connection state of the two air inlet pipe branches and the air outlet pipe branch, so as to clean the powder on the inner wall of the equipment and prevent the air outlet from being blocked by switching the two air inlet pipe branches.

[0026] 2. The device of the utility model is used to clean the powder on the inner wall of the equipment without causing the powder to escape into the air and pollute the air, and no large amount of water is required for flushing, thus avoiding waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the mechanism of a powder cleaning device for the inner wall of a powder production equipment;

[0028] Figure 2 Schematic diagram of the structure of the air outlet setting. DETAILED DESCRIPTION

[0029] See also Figure 1The utility model discloses a powder cleaning device for the inner wall of a powder production equipment, which includes a first pipeline branch 1 and a second pipeline branch 2 parallel to the first pipeline branch 1, wherein the first pipeline branch 1 and the second pipeline branch 2 are inverted U-shaped and the openings of the first pipeline branch 1 and the second pipeline branch 2 are downward, and the first pipeline branch 1 and the second pipeline branch 2 are both air intake settings; a third pipeline branch 3 is arranged between the first pipeline branch 1 and the second pipeline branch 2, and is connected to the first pipeline branch 1 and the second pipeline branch 2 and opens upward, wherein the diameter D of the third pipeline branch 3 is between 8-25 cm, preferably 10-16 cm, and in this embodiment, preferably 12 cm.

[0030] The third pipeline branch 3 is divided into an inner third pipeline branch 31 and an outer third pipeline branch 32, wherein the length of the inner third pipeline branch 32 is between one-third and two-thirds of the third pipeline branch 3. In this embodiment, the length of the inner third pipeline branch 32 is one-half of the third pipeline branch 3. A blind plate 311 is provided at the opening of the inner third pipeline branch 31 to prevent gas from being released from the outlet of the third pipeline branch 3. A number of air outlets 312 are distributed on the inner third pipeline branch 31. The air outlets 312 are arranged in n rows and p columns, wherein 3≤n≤8, 4≤p≤12. In this embodiment, the rows and columns of the air outlets 312 are preferably n=4, p=8; there is an angle θ between the center line of the air outlet 312 and the central axis of the third pipeline branch 3. Please read for details. Figure 2 , where θ is 30°≤θ≤85°. In this embodiment, the angle θ of the first exhaust hole is preferably 30°, which is used to purge the inner wall closest to the third pipe branch 31 in the equipment. The angle θ of the second exhaust hole is preferably 40°, which is used to purge the inner wall relatively close to the third pipe branch 31. The angle θ of the third exhaust hole is preferably 55°, which is used to purge the inner wall relatively far away from the third pipe branch 31. The angle θ of the fourth exhaust hole is preferably 70°, which is used to purge the inner wall relatively far away from the third pipe branch 31. It can be seen from this that the closer to the inner wall 6 of the equipment, the smaller the angle θ, thereby making it easier to purge the inner wall relatively close to the third pipe branch 31 in the equipment. The farther away from the inner wall 6 of the equipment, the larger the angle θ, which is used to expand the purge range and achieve the largest possible purge area. More preferably, the first exhaust hole 312 is closest to the inner wall 6 of the device, and the angle θ ranges from 30-40°; the nth exhaust hole 312 is farthest from the inner wall 6 of the device, and the angle θ ranges from 60-85°, preferably 70-80°.

[0031] A three-way ball valve 4 is provided at the intersection of the first pipeline branch 1, the second pipeline branch 2 and the third pipeline branch 3. When the inner wall of the equipment needs to be purged, the three-way ball valve 4 is adjusted so that the first pipeline branch 1 and the third pipeline branch 3 are in an open state, and the second pipeline branch 2 is in a closed state, to ensure that the first pipeline branch 1 and the third pipeline branch 3 are connected, and the air pressure P of the air source of the first air inlet is adjusted. Preferably, the air pressure P is P≥0.1MPa, P≥0.3MPa, P≥0.5MPa, preferably P≤2.3MPa, P≤2.0MPa, P≤1.7MPa, P≤1.4MPa; by adjusting the air pressure P, the high-pressure gas is passed through the plurality of exhaust holes 312 to vigorously purge the powder on the inner wall, thereby realizing rapid removal of the powder adhering to the inner wall. During the powder removal process, it is necessary to ensure that the purged powder is led to the dust collector through the connected induced draft fan. The filter bag in the dust collector can separate the gas and solid powder inside the equipment body, eliminating the pollution of the atmosphere during the cleaning process.

[0032] In addition, a gas flow meter 5 is provided on the second pipeline branch 2 to control the gas flow of the second pipeline branch 2. When the powder equipment is in production, there is no need to purge the inner wall. The three-way ball valve 4 is adjusted so that the second pipeline branch 2 and the third pipeline branch 3 are in an open state, and the first pipeline branch 1 is in a closed state to ensure that the second pipeline branch 2 and the third pipeline branch 3 are connected. The gas flow meter 5 is adjusted so that its flow rate is 0.2-0.8L / min. In this embodiment, the flow rate is 0.35L / min, and air is supplied to the second pipeline branch 2 to prevent the powder in the equipment from clogging the air holes, causing the powder cleaning device to malfunction.

[0033] The utility model sets three pipeline branches, which include two air inlet pipeline branches and one air outlet pipeline branch. Several rows of air outlet holes are distributed on the air outlet pipeline branch, and the center line of the air outlet hole and the central axis of the air outlet pipeline branch form an angle, which becomes smaller as the distance from the air outlet of the air outlet pipeline branch increases, thereby better cleaning the powder on the inner wall; at the same time, a three-way ball valve is set at the connection point of the three pipeline branches, so that the working and standby states of the powder cleaning device on the inner wall of the powder production equipment can be freely switched, and two different air inlet pipeline branches are opened in the working and standby states respectively, one of which ensures that high-pressure air is provided to clean the inner wall in the working state, and the other ensures that a small amount of air is provided to avoid clogging of the air holes in the standby state, thereby preventing powder from polluting the air and causing dust explosion, and at the same time avoiding the waste of water resources caused by water washing and the problem of difficult sewage treatment.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A powder cleaning device for the inner wall of a powder production equipment, characterized in that: It includes: a first conduit branch including a first air inlet; a second pipe branch, comprising a second air inlet, communicating with the first pipe branch and presenting a U-shape; a third pipe branch, which is in communication with the first pipe branch and the second pipe branch and is disposed between the first pipe branch and the second pipe branch, and includes an air outlet located at the end of the third pipe branch away from the first air inlet; A three-way ball valve is provided at the intersection of the first pipeline branch, the second pipeline branch and the third pipeline branch. The working state is to open the first pipeline branch and the third pipeline branch, and the standby state is to open the second pipeline branch and the third pipeline branch. The third pipeline branch is divided into an inner third pipeline branch and an outer third pipeline branch, and a plurality of air outlets are distributed on the inner third pipeline branch.

2. The device for cleaning the inner wall of powder production equipment according to claim 1, characterized in that: The air outlet holes are arranged in n rows and p columns, wherein 3≤n≤8, 4≤p≤12.

3. The device for cleaning the inner wall of powder production equipment according to claim 1, characterized in that: The length of the inner third pipeline branch is between one third and one half of the third pipeline branch.

4. The device for cleaning the inner wall of powder production equipment according to claim 1, characterized in that: The included angle between the center line of the air outlet and the center axis of the third pipeline branch is θ, wherein 30°≤θ≤85°.

5. The device for cleaning the inner wall of powder production equipment according to claim 4, characterized in that: The closer to the air outlet of the third pipeline branch, the larger the angle θ.

6. The device for cleaning the inner wall of powder production equipment according to claim 1, characterized in that: The air pressure P of the first air inlet is in the range of 0.1 MPa≤P≤1.7 MPa.

7. The device for cleaning the inner wall of powder production equipment according to claim 1, characterized in that: A flow meter is provided on the second pipeline branch.

8. The device for cleaning the inner wall of powder production equipment according to claim 7, characterized in that: The flow rate of the flow meter is 0.2-0.8 L / min.

9. The device for cleaning the inner wall of powder production equipment according to claim 1, characterized in that: The air outlet of the third pipeline branch is provided with a blind plate.

10. The device for cleaning the inner wall of powder production equipment according to any one of claims 1 to 9, characterized in that: Also includes a dust suction device for collecting powder.

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