Powder recovery system
By designing a powder recovery system, the system utilizes the difference in powder inertia at the airflow intersection to achieve efficient classification and collection of fine powder, solving the problems of fine powder sieving and non-deposited powder recovery, and improving recovery efficiency and powder utilization.
Patent Information
- Application Number
- CN202422937852.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-29
AI Technical Summary
In existing technologies, it is difficult to sieve fine powder and recover undeposited powder, especially in plasma spraying, where sieving is difficult when the powder particle size is fine, and there is a serious waste of undeposited powder.
Design a powder recovery system including multiple sets of collection components connected in sequence. Utilize the difference in powder inertia when the airflow changes direction to achieve powder particle size separation through the intersection of the inlet straight pipe, the outlet straight pipe and the recovery pipe. The larger the powder particle size, the greater the inertia and the earlier it enters the recovery pipe, while the smaller the particle size, the later it enters, thus achieving efficient classification and collection.
It achieves efficient classification and collection of fine powders, improves powder recovery efficiency, reduces waste, and is suitable for the thermal spraying and powder preparation industries.
Smart Images
Figure CN223517135U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to powder recovery device field, especially a kind of powder recovery system. BACKGROUND
[0002] In the field of powder preparation, it is often necessary to classify and collect the prepared powder according to different particle sizes. When the powder is very fine, it is difficult to use a screen to separate it. Moreover, powder preparation and screening require different equipment, which means offline screening, which is quite troublesome.
[0003] In the thermal spraying industry, especially in plasma spraying, the spray gun heats and sprays the special powder material for thermal spraying on the workpiece to be sprayed. During the spraying process, part of the un-deposited powder is often wasted.
[0004] When recovering the un-deposited powder, it needs to be classified and collected according to the particle size of the powder. The existing recovery method uses a screen to separate the powder. However, when the powder is very fine, it is difficult to use a screen to separate it. SUMMARY
[0005] The utility model embodiment provides a kind of dust recovery system to solve the problem of the recovery difficulty of existing recovery method.
[0006] The utility model embodiment provides a kind of powder recovery system, including multiple groups of sequentially head-to-tail connection's collection component, the collection component includes collection container, intake straight pipe, outlet straight pipe and recovery pipe;
[0007] The starting end of the recovery pipe, the outlet end of the intake straight pipe and the intake end of the outlet straight pipe are in communication with each other. The recovery end of the recovery pipe is connected to the collection container. The included angle between the length direction of the intake straight pipe and the length direction of the outlet straight pipe is a preset angle. The center line of the starting end of the recovery pipe is collinear with the center line of the intake straight pipe.
[0008] The outlet end of the outlet straight pipe of the preceding collection component is connected to the intake end of the intake straight pipe of the following collection component. The intake end of the intake straight pipe of the first collection component and the outlet end of the outlet straight pipe of the last collection component are respectively connected to the outside.
[0009] Optionally, the preset angle is 90°-160°.
[0010] Optionally, the preset angle is 135°.
[0011] Optionally, the intake straight pipe, the outlet straight pipe and the recovery pipe are square tubes or circular tubes.
[0012] Optionally, the air inlet straight pipe is a circular pipe, the length of the air inlet straight pipe is a, the inner diameter of the air inlet straight pipe is b, and a / b is greater than 2.
[0013] Optionally, the air inlet straight pipe is a square pipe, the length of the air inlet straight pipe is a, the width of the air inlet straight pipe is b, and a / b is greater than 2.
[0014] Optionally, a / b is in the range of 2 < a / b ≤ 4.
[0015] Optionally, the air inlet end to the air outlet end of the air inlet straight pipe is arranged from top to bottom, and the air inlet end to the air outlet end of the air outlet straight pipe is arranged from bottom to top.
[0016] The collection container is located below the air outlet end of the air inlet straight pipe.
[0017] Optionally, the recovery pipe comprises a first pipe and a second pipe, one end of the first pipe is communicated with the air inlet straight pipe, the other end of the first pipe is communicated with the second pipe, the end of the second pipe away from the first pipe is communicated with the collection container, and the first pipe is parallel to the air inlet straight pipe.
[0018] Optionally, in the same collection assembly, the air outlet end of the air inlet straight pipe and the air inlet end of the air outlet straight pipe are smoothly transitioned.
[0019] In the two collection assemblies adjacent in front and back, the air inlet end of the air inlet straight pipe in the latter collection assembly and the air outlet end of the air outlet straight pipe in the former collection assembly are arc transitioned.
[0020] The dust recovery system provided by the embodiment of the present application suddenly changes the direction of airflow at the intersection of the air inlet straight pipe, the air outlet straight pipe and the recovery pipe, but the change of direction of the powder lags behind the airflow due to inertia, so the powder flows into the recovery pipe without changing direction due to large inertia. The larger the particle size of the powder, the larger the inertia, and the more lagged the change of direction, so the particle size of the powder collected by the first collection container is larger than that of the powder collected by the subsequent collection containers, and the particle size of the powder collected by the collection container at the rear is smaller, thereby realizing the effect of dust screening. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical scheme of the embodiment of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiment of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.
[0022] Figure 1 is the overall schematic diagram of the dust recovery system in an embodiment of the present application.
[0023] Reference signs: 1, collecting container; 2, air inlet straight pipe; 3, air outlet straight pipe; 4, recovery pipe. DETAILED DESCRIPTION
[0024] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.
[0025] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.
[0026] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0027] Reference Figure 1 , the utility model discloses a kind of powder recovery system, including multiple groups of sequentially head-to-tail connection collection assembly, the collection assembly includes collecting container 1, air inlet straight pipe 2, air outlet straight pipe 3 and recovery pipe 4;Wherein, the starting end of the recovery pipe 4, the air outlet end of air inlet straight pipe 2 and the air inlet end of the air outlet straight pipe 3 converge at one place and communicate with each other, the recovery end of the recovery pipe 4 is communicated with the collecting container 1, the included angle between the length direction of the air inlet straight pipe 2 and the length direction of the air outlet straight pipe 3 is preset angle, the center line of the starting end of the recovery pipe 4 and the center line of the air inlet straight pipe 2 are collinear.The air outlet end of the air outlet straight pipe 3 of the preceding collection assembly is communicated with the air inlet end of the air inlet straight pipe 2 of the following collection assembly, the air inlet end of the air inlet straight pipe 2 of the first collection assembly and the air outlet end of the air outlet straight pipe 3 of the last collection assembly are communicated with external environment respectively.
[0028] The center line refers to a line connecting the centers of the end faces of the two ends of the pipe, and the center line is a central axis of the circular pipe.
[0029] The inlet straight pipe 2 of the collecting assembly at the head part is communicated with the pollution source, and the outlet straight pipe 3 of the collecting assembly at the tail part is communicated with the external atmosphere. The gas with dust enters the inlet straight pipe 2 of the collecting assembly at the head part first, and then flows to the intersection of the inlet straight pipe 2, the recovery pipe 4 and the outlet straight pipe 3 of the collecting assembly, the gas flows from the inlet straight pipe 2 to the outlet main pipe, the wind direction changes, the gas begins to enter the outlet pipe, the dust is subjected to gravity and enters the recovery pipe 4 along the length direction of the inlet straight pipe 2, and the dust gradually enters the collecting container 1 after entering the recovery pipe 4, the gas and the dust wrapped by the gas are separated by changing the wind direction, and the dust in the collecting container 1 reaches the preset amount, the recovery pipe 4 and the collecting container 1 are removed, and the dust in the collecting container 1 is recovered.
[0030] The principle of the embodiment is as follows: the direction of the gas flow is suddenly changed at the intersection of the inlet straight pipe 2, the outlet straight pipe 3 and the recovery pipe 4, but the direction of the powder changes relatively late due to inertia, so the powder with large inertia flows into the recovery pipe 4 without changing the direction in time. The larger the particle size of the powder, the larger the inertia, and the more the direction changes lag, so the particle size of the powder collected by the first collecting container 1 is larger than that of the powder collected by the subsequent collecting containers 1, and the particle size of the powder collected by the collecting container 1 at the rear end is smaller, so that the effect of dust screening is realized.
[0031] The utility model discloses utilize the inertia of powder, and in the powder preparation field, the device is connected at the discharge end, and powder can be classified along different particle sizes directly and efficiently. In the spraying field, the powder that is not deposited is directly collected and classified in the pipeline by suction, and the powder with appropriate particle size can be directly reused without pollution.
[0032] The utility model can be widely applied in thermal spraying industry, and of course can be applied in powder preparation industry, and the powder recovery system of the utility model can classify and collect the prepared powder according to different particle sizes.
[0033] In the embodiment, the preset angle is 90°-160°, and the preset angle is marked with e in the drawing for the convenience of understanding. Preferably, the preset angle is 135°.
[0034] As an example, the inlet straight pipe 2 is a circular pipe, the length of the inlet straight pipe 2 is a, the inner diameter of the inlet straight pipe 2 is b, and a / b is greater than 2. Preferably, a / b is in the range of 2
[0035] As an example, the inlet end to the outlet end of the inlet straight pipe 2 is arranged from top to bottom, the inlet end to the outlet end of the outlet straight pipe 3 is arranged from bottom to top, and the collection container 1 is located below the outlet end of the inlet straight pipe 2. In this embodiment, the collection container 1 is in the shape of a bottle, and after the dust enters the recovery pipe 4, the dust falls downward under the action of its own gravity until it falls into the collection container 1.
[0036] As an example, the inner diameter of the recovery pipe 4 is greater than the inner diameters of the inlet straight pipe 2 and the outlet straight pipe 3. In this embodiment, the inner diameters of the inlet straight pipe 2 and the outlet straight pipe 3 are smaller than the inner diameter of the recovery pipe 4. When the gas and dust enter the recovery pipe 4, the flow rate decreases due to the increase in the inner diameter under the condition that the gas flow rate remains unchanged, making it easier for the dust to fall downward.
[0037] As an example, the recovery pipe 4 includes a first pipe and a second pipe, one end of the first pipe is connected to the inlet straight pipe 2, the other end of the first pipe is connected to the second pipe, the end of the second pipe away from the first pipe is connected to the collection container 1, the first pipe is parallel to the inlet straight pipe 2, and the intersection of the first pipe and the second pipe is smoothly transitioned.
[0038] In this embodiment, in order to reduce air resistance, the connection between the first pipe and the second pipe is as smooth as possible, so that when the gas flows through this place, it will not cause excessive turbulence. In addition, in this embodiment, the first pipe is inclined from top to bottom, so that the dust attached to the first pipe also easily enters the collection container 1 with the wind. The inclined first pipe plays a certain flow guiding role, and the vertically arranged second pipe facilitates the direct falling of the dust into the collection container 1 under the action of its own gravity.
[0039] In the embodiment, the second pipe is perpendicular to the first pipe. In other embodiments, the second pipe and the first pipe have an included angle other than zero.
[0040] In the same collecting assembly, the connection between the outlet end of the inlet straight pipe 2 and the inlet end of the outlet straight pipe 3 is smoothly transitioned; in the adjacent front and rear two collecting assemblies, the connection between the inlet end of the inlet straight pipe 2 in the rear collecting assembly and the outlet end of the outlet straight pipe 3 in the front collecting assembly is arc transitioned. Similarly to the arc transition of the first pipe and the second pipe described above, the connection between the inlet straight pipe 2 and the outlet straight pipe 3 is also smoothly transitioned, which can also avoid the turbulence of the gas.
[0041] In an embodiment, the inlet straight pipe 2, the outlet straight pipe 3 and the recovery pipe 4 are square pipes.
[0042] In the embodiment, the dust recovery system is generally applied to a spray gun, and the dust recovery system can be directly installed on the spray gun and moved with the spray gun.
[0043] In other embodiments, the dust recovery system can be fixed at a certain part of the factory and does not need to be moved with the spray gun.
[0044] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.
Claims
1. A powder recovery system, characterized by, The collecting assembly comprises a collecting container, an air inlet straight pipe, an air outlet straight pipe and a recovery pipe. The starting end of the recovery pipe, the air outlet end of the air inlet straight pipe and the air inlet end of the air outlet straight pipe are in communication with each other, the recovery end of the recovery pipe is in communication with the collecting container, the angle between the length direction of the air inlet straight pipe and the length direction of the air outlet straight pipe is a preset angle, and the center line of the starting end of the recovery pipe is collinear with the center line of the air inlet straight pipe. The air outlet end of the air outlet straight pipe of the former collecting assembly is in communication with the air inlet end of the air inlet straight pipe of the latter collecting assembly, and the air inlet end of the air inlet straight pipe of the first collecting assembly and the air outlet end of the air outlet straight pipe of the last collecting assembly are respectively in communication with the outside.
2. The powder recovery system of claim 1, wherein, The preset angle is 90-160 degrees.
3. The powder recovery system of claim 2, wherein, The preset angle is 135 degrees.
4. The powder recovery system of claim 1, wherein, The air inlet straight pipe, the air outlet straight pipe and the recovery pipe are square pipes or circular pipes.
5. The powder recovery system of claim 1, wherein, The air inlet straight pipe is a circular pipe, the length of the air inlet straight pipe is a, the inner diameter of the air inlet straight pipe is b, and a / b is greater than 2.
6. The powder recovery system of claim 1, wherein, The air inlet straight pipe is a square pipe, the length of the air inlet straight pipe is a, the width of the air inlet straight pipe is b, and a / b is greater than 2.
7. The powder recovery system of claim 5 or 6, wherein, The range of a / b is 2 8. The powder recovery system of claim 1, wherein, The air inlet end to the air outlet end of the air inlet straight pipe is arranged from top to bottom, and the air inlet end to the air outlet end of the air outlet straight pipe is arranged from bottom to top. The collecting container is located below the air outlet end of the air inlet straight pipe.
9. The powder recovery system of claim 1, wherein, The recovery pipe comprises a first pipe and a second pipe, one end of the first pipe is in communication with the air inlet straight pipe, the other end of the first pipe is in communication with the second pipe, the end of the second pipe away from the first pipe is in communication with the collecting container, and the first pipe is parallel to the air inlet straight pipe.
10. The powder recovery system of claim 1, wherein, In the same collecting assembly, the air outlet end of the air inlet straight pipe and the air inlet end of the air outlet straight pipe are smoothly transitioned. In the two collecting assemblies adjacent in front and back, the air inlet end of the air inlet straight pipe in the latter collecting assembly and the air outlet end of the air outlet straight pipe in the former collecting assembly are arc transitioned.