Anti-blocking type cleaning device for powder on inner wall of equipment

Abstract

According to the anti-blocking cleaning device, the spring is arranged between the closed section of the air outlet pipeline and the sleeve of the airtight cover, the rows of air outlets are distributed in the air hole section of the air outlet pipeline, powder in a kettle is isolated from the air outlets through the airtight cover under the telescopic action of the spring when the anti-blocking cleaning device works, and the air holes are prevented from being blocked; an included angle is formed between the center line of the air outlet hole and the central axis of the air outlet pipeline, and the included angle is increased along with the distance between the included angle and the junction of the closed section and the air hole section of the air outlet pipeline, so that powder on the inner wall of the equipment is better cleaned, and then the powder is collected through the powder treatment device; the powder is prevented from being dissipated into the air, so that the powder is prevented from polluting the air and causing dust explosion, and meanwhile, the problems of water resource waste and difficult sewage treatment caused by water washing are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of material cleaning devices, in particular to a powder anti-blocking cleaning device for the inner wall of 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 the machine: one is to use an air gun to directly blow away the powder after disassembling the machine. 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 wall of the kettle. 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 a device to prevent powder from blocking. A certain number of inner wall powder cleaning devices are arranged on the inner side of the device. These devices work together to completely clean all the powder adhering to the device. 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 the inner wall of equipment against powder blockage, comprising:

[0007] Intake duct;

[0008] An air outlet duct, comprising a closed section and an air hole section, wherein a first fixing ring of a spring is provided at the connection between the closed section and the air hole section, and one end of the spring is connected to the first fixing ring; the air hole section is arranged with n rows and p columns of air outlet holes;

[0009] The airtight cover comprises a sleeve, wherein the sleeve is provided with a second fixing ring for fixing the other end of the spring near the top of the airtight cover.

[0010] In one embodiment, the air outlet holes are arranged in n rows and p columns, wherein 2≤n≤5, 6≤p≤10, and more preferably 3≤n≤4, 6≤p≤8.

[0011] In one embodiment, an angle θ is formed between the center line of the air outlet and the center axis of the air outlet pipe, wherein 20°≤θ≤85°, preferably 20°≤θ≤70°.

[0012] In one embodiment, a first sealing ring is provided at the other end of the closing section away from the fixing ring, and a second sealing ring is provided at the opening of the sleeve.

[0013] In one embodiment, the diameter of the sleeve is larger than the diameter of the closing section, and the sleeve is sleeved on the closing section.

[0014] In one embodiment, the air pressure P of the air intake pipe is in the range of 0.5 MPa≤P≤2.3 MPa.

[0015] In one embodiment, a flow meter is provided on the second pipeline branch.

[0016] In one embodiment, a ball valve for controlling the opening and closing of the air circuit is provided on the air intake pipe.

[0017] In one embodiment, when the air intake duct is open, the tension F of the spring is 8-15N; when the air intake duct is closed, the tension f of the spring is 0-2N.

[0018] In one embodiment, the airtight cover further includes a third sealing ring, which is arranged along the open end of the airtight cover. The third sealing ring at the open end of the airtight cover is conducive to maintaining a negative pressure state inside the device and ensuring the airtightness of the device.

[0019] In one embodiment, the airtight cover is made of one of stainless steel, PPS, PEEK, and POM.

[0020] In one embodiment, a dust collecting device for collecting powder is further included.

[0021] When the powder production equipment inner wall powder cleaning device is in cleaning mode, the ball valve is opened, leaving the air inlet and outlet pipes in an open circuit state. The high-pressure gas in the air inlet pipe applies pressure to the airtight cover, causing it to overcome the spring tension and move along the closed section of the outlet pipe away from the kettle wall, leaving the air holes in the air hole section of the outlet pipe completely exposed, thereby achieving a purge operation on the kettle wall. At this time, the tension exerted on the spring and the pressure exerted on the airtight cover by the high-pressure gas form a dynamic balance, so that the sleeve on the airtight cover and the closed section of the outlet pipe are always in a partially overlapping state. This prevents the airtight cover from being unable to quickly reset when the ball valve is closed, causing the negative pressure in the equipment to be destroyed and potential powder to enter the airtight cover and cause the air holes to be blocked.

[0022] When the powder production equipment inner wall powder cleaning device is turned on in standby mode, the ball valve is closed, and the pressure on the airtight cover instantly disappears. Under the action of the spring tension, the airtight cover quickly resets. When the powder production equipment is in production, the airtight cover is tightly fitted to the inner wall of the equipment due to the spring tension. This not only maintains a negative pressure state in the equipment, preventing the powder in the equipment from escaping into the air and causing dust pollution, but also prevents the powder in the equipment from penetrating into the airtight cover, causing pore blockage and preventing subsequent equipment inner wall purge operations from proceeding normally.

[0023] Technical effect:

[0024] 1. The device arranges a spring between the closed section of the outlet pipe and the sleeve of the airtight cover, and distributes several rows of air holes in the air hole section of the outlet pipe. Under normal conditions, the airtight cover is subjected to the contraction effect of the spring, so that the airtight cover fits tightly on the wall of the kettle. When the anti-blocking cleaning device is in standby mode, it blocks the powder in the kettle to avoid clogging the air holes.

[0025] 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.

[0026] 3. In the present invention, the center line of the air outlet has an angle with the center axis of the air outlet pipe. The angle increases as the distance from the closed section of the air outlet pipe becomes closer, thereby better cleaning the powder on the inner wall of the equipment.

[0027] 4. An annular sealing ring is provided at the opening end of the airtight cover, which is conducive to maintaining the negative pressure state inside the equipment and ensuring airtightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the mechanism of a device for cleaning powder on the inner wall of equipment to prevent blockage;

[0029] Figure 2 Schematic diagram of the structure of the gas outlet pipe 2;

[0030] Figure 3 is a schematic diagram of the angle of the air outlet 221;

[0031] Figure 4 It is a structural schematic diagram of the airtight cover 3;

[0032] Figure 5 It is a device for cleaning the inner wall of equipment to prevent powder from blocking during operation. DETAILED DESCRIPTION

[0033] See also Figure 1 and Figure 2The utility model discloses a device for cleaning the inner wall of an equipment for preventing powder from blocking, which includes an air inlet pipe 1 and an air outlet pipe 2, wherein the air inlet pipe 1 is arranged outside the inner wall 5 of the equipment and a ball valve 11 is provided on the air inlet pipe for switching the air circuit, and the air outlet pipe 2 is arranged inside the inner wall 5 of the equipment and an airtight cover 3 is covered on the air outlet pipe 2. The air outlet pipe 2 is divided into a closed section 21 and an air hole section 22, and the length of the closed section 21 is smaller than the length of the air hole section 22. A first fixing ring 211 of a spring 4 is provided at the connection between the closed section 21 and the air hole section 22, one end of the spring 4 is connected to the first fixing ring 211, and a first sealing ring 212 is provided at the other end of the closed section 21 away from the fixing ring 211. There are n rows and p columns of air outlet holes 221 arranged on the air hole section 22, wherein 2≤n≤5, 6≤p≤10, and in this embodiment, n=3, p=8.

[0034] In addition, there is an angle θ between the center line of the air outlet hole 221 and the center axis of the air outlet pipe 2. For details, please refer to Figure 3 , where θ is 20°≤θ≤85°. In this embodiment, the angle θ of the first exhaust hole is preferably 20°, which is used to purge the inner wall closest to the air inlet pipe 2 of the equipment. The angle θ of the second exhaust hole is preferably 45°, which is used to purge the inner wall relatively close to the air inlet pipe 2. The angle θ of the third exhaust hole is preferably 70°, which is used to purge the inner wall relatively far away from the air inlet pipe 2. It can be seen from this that the closer to the inner wall 5 of the equipment, the smaller the angle θ, making it easier to purge the inner wall relatively close to the air inlet pipe 2 of the equipment. The farther away from the inner wall 5 of the equipment, the larger the angle θ, which is used to expand the purge range and achieve the largest possible purge area. Further preferably, the first exhaust hole 221 is closest to the inner wall 5 of the equipment, and the θ range is 20-40°. The nth exhaust hole 221 is farthest from the inner wall 5 of the equipment, and the θ range is 70-85°, preferably 70-80°.

[0035] Further reading Figure 4 The top of the airtight cover 3 is provided with a sleeve 31, and a second sealing ring 32 is provided at the opening of the sleeve 31. A second fixing ring 33 of the spring 4 is provided near the top of the sleeve 31. The other end of the spring 4 is connected to the second fixing ring 33. The sleeve 3 is sleeved on the closed section 21. The airtight cover 3 also includes a third sealing ring 34, which is distributed along the open end of the sealing cover 3 to help maintain a negative pressure state inside the equipment and ensure the airtightness of the equipment.

[0036] For further explanation, please refer to Figure 4 and Figure 5 When the anti-blocking cleaning device is working, adjust the ball valve 11 so that the air inlet pipe 1 is in a passage state, and adjust the air pressure P of the air source. Preferably, the air pressure P is P≥0.5MPa, P≥0.8MPa, P≥1MPa, preferably P≤2.3MPa, P≤2.0MPa, P≤

[0037] 1.7MPa, P≤1.4MPa; in this embodiment, P=2.0MPa, high-pressure gas blows the closed airtight cover 3 through the several exhaust holes 221, so that the airtight cover 3 gradually moves away from the inner wall 5 of the equipment along the vertical direction of the outlet pipe 2. At this time, the spring 4 is stretched and has a tension F, which is between 8-15N, preferably 10-13N. In this embodiment, the tension F is 11.6N. At this time, the outlet holes 221 are completely exposed, and the gas ejected therefrom can vigorously purge the powder on the inner wall of the equipment, thereby quickly removing the powder adhered to the inner wall of the equipment. At this time, the tension exerted on the spring and the pressure of the high-pressure gas on the airtight cover form a dynamic balance, so that the sleeve on the airtight cover and the closed section of the outlet pipe are always in a partially overlapping state, so as to avoid the airtight cover from being unable to quickly reset when the ball valve is closed, causing the destruction of the negative pressure in the kettle and the potential entry of powder into the airtight cover, resulting in the phenomenon of clogging the air holes.

[0038] When the anti-blocking cleaning device is on standby, the ball valve 11 is adjusted so that the air inlet pipe 1 is in a closed-circuit state, the air pressure P slowly drops, and the airtight cover 3 gradually approaches the inner wall 5 of the equipment along the vertical direction of the air outlet pipe 2 under the pulling force of the spring 4. At this time, the spring 4 returns to its original state with a pulling force f, f is between 0-5N, preferably 0-2N, and in this embodiment f=0N. At this time, the airtight cover 3 fits tightly with the inner wall 3 of the equipment again, and the air outlet 221 will not cause powder blockage due to the barrier effect of the airtight cover 3, thereby preventing the anti-blocking cleaning device from being unable to be used normally.

[0039] 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 bags in the dust collector can separate the gas and solid powder inside the equipment, eliminating the pollution of the atmosphere during the cleaning process.

[0040] The utility model arranges a spring between the closed section of the air outlet pipe and the sleeve of the airtight cover, and distributes several rows of air outlet holes in the air hole section of the air outlet pipe. Through the expansion and contraction of the spring, the airtight cover isolates the powder in the kettle and the air outlet holes when the anti-blocking cleaning device is working, thereby avoiding blockage of the air holes and the occurrence of the phenomenon of continuous operation. The center line of the air outlet hole and the central axis of the air outlet pipe have an angle, and the angle becomes smaller as the distance from the closed section of the air outlet pipe and the air hole section becomes closer, thereby better cleaning the powder on the inner wall of the equipment, and then collecting it through the powder processing device, avoiding the powder from escaping into the air, thereby preventing the powder from polluting the air and causing dust explosions, and at the same time avoiding the waste of water resources caused by water washing and the difficulty of sewage treatment.

[0041] 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.

[0042] 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 device for cleaning the inner wall of equipment against powder blockage, characterized in that: It includes: Intake duct; An air outlet duct, comprising a closed section and an air hole section, wherein a first fixing ring of a spring is provided at the connection between the closed section and the air hole section, and one end of the spring is connected to the first fixing ring; the air hole section is arranged with n rows and p columns of air outlet holes; The airtight cover comprises a sleeve, wherein the sleeve is provided with a second fixing ring for fixing the other end of the spring near the top of the airtight cover.

2. The device for cleaning the inner wall of a device for preventing powder from blocking according to claim 1, characterized in that: The air outlet holes are arranged in n rows and p columns, wherein 2≤n≤5, 6≤p≤10.

3. The device for cleaning the inner wall of a device for preventing powder from blocking according to claim 1, characterized in that: An included angle θ is formed between the center line of the air outlet hole and the center axis of the air outlet pipe, and the angle θ is 20°≤θ≤85°.

4. The device for cleaning the inner wall of a device for preventing powder from blocking according to claim 1, characterized in that: A first sealing ring is provided at the other end of the closing section away from the fixing ring, and a second sealing ring is provided at the opening of the sleeve.

5. The device for cleaning the inner wall of a device against powder blockage according to claim 4, characterized in that: The sleeve diameter is larger than the closing section diameter.

6. The device for cleaning the inner wall of a device for preventing powder from blocking according to claim 1, characterized in that: The air pressure P of the air intake pipe is in the range of 0.5 MPa≤P≤2.3 MPa.

7. The device for cleaning the inner wall of a device against powder blockage according to claim 1, characterized in that: The air inlet pipeline is provided with a ball valve for controlling the opening and closing of the air circuit.

8. The device for cleaning the inner wall of a device for preventing powder from blocking according to claim 7, characterized in that: When the air intake duct is open, the tension F of the spring is 8-15N; when the air intake duct is closed, the tension f of the spring is 0-2N.

9. The device for cleaning the inner wall of a device for preventing powder from blocking according to claim 1, characterized in that: The airtight cover further includes a third sealing ring, which is arranged along the open end of the airtight cover.

10. The device for cleaning the inner wall of equipment against powder blockage 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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