Fused epoxy powder recovery device

Abstract

The utility model relates to the technical field of pipeline production, and discloses a sintered epoxy powder recovery device. The telescopic rods are arranged on the rolling frame cylinders, the rolling frame cylinders are connected with the arc-shaped supporting pipes through the telescopic rods, and therefore when the inner diameter of the to-be-sprayed pipeline is changed, all the arc-shaped supporting pipes can be supported in the to-be-sprayed pipeline again by adjusting the lengths of the telescopic rods, so that the equipment is wider in application range and higher in practicability. And according to the equipment, sliding friction between the arc-shaped supporting pipe and the inner wall of the pipeline to be sprayed is changed into rolling friction by arranging the rolling wheels, and abrasion is further reduced. In conclusion, the length of the telescopic rod can be adjusted, so that the rolling frame cylinder can be always located at the center axis of a to-be-sprayed pipeline with any diameter, and then it is guaranteed that the first annular pipeline is located at the center axis of the to-be-sprayed pipeline, so that the spraying effect is more uniform.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline production, and in particular to a sintered epoxy powder recovery device. Background Art

[0002] Epoxy powder is a thermosetting, non-toxic coating. After curing, it forms a high molecular weight cross-linked structure coating with excellent chemical corrosion resistance and high mechanical properties, especially the best wear resistance and adhesion. It is widely used in the corrosion protection of buried steel pipelines. Usually, the internal fusion epoxy powder spraying equipment uses traditional Venturi powder pumps for conveying and spraying. The compressed air directly drives the powder to achieve high-speed conveying to complete the spraying.

[0003] In the prior art, during the spraying process, the nozzle component moves in the pipe and sprays toward the inner wall of the pipe. However, due to the different inner diameters of the pipes, the nozzle component cannot be guaranteed to always be located at the central axis of the pipe when being fixed, resulting in uneven spraying at various locations on the inner wall of the pipe. Utility Model Content

[0004] In view of the above problems, an embodiment of the present application provides a sintered epoxy powder recovery device, which can ensure that the nozzle component can always be located at the central axis of the pipeline during the process of spraying sintered epoxy powder, thereby making the spraying effect more uniform.

[0005] According to one aspect of an embodiment of the present application, a sintered epoxy powder recovery device is provided. The fused epoxy powder recovery device includes an external device and an internal device, wherein the internal device includes a roller frame, wherein a plurality of telescopic rods are arranged at intervals along the axial direction of the roller frame at the outer circumference of the roller frame, wherein two adjacent telescopic rods are connected by a fixed bent pipe, wherein the telescopic rods extend radially along the roller frame, wherein the other end of the telescopic rods is connected to an arc-shaped support tube, wherein the plurality of arc-shaped support tubes have the same curvature and their axes coincide with the central axis of the roller frame, wherein a plurality of rollers are hingedly connected to the outer end of the arc-shaped support tube, wherein one end of the roller frame extends to the outer side of the arc-shaped support tube, and then the outer end is connected and fixedly connected with a first annular pipe and a second annular pipe in sequence through a thin rod, wherein a plurality of spray ports are arranged on the outer circumference of the first annular pipe, and a plurality of dust collecting ports are arranged on the outer circumference of the second annular pipe, wherein the external device includes a power frame, wherein a powder pumping device and a negative pressure powder collecting device are arranged on the power frame, wherein the powder pumping device is connected to the first annular pipe through an output pipe, and the powder collecting device is connected to the second annular pipe through a recovery pipe, and a traction rope is arranged between the internal device and the external device.

[0006] In some embodiments, the telescopic rod includes a first screw fixed on the roller tube and a second screw fixed on the arc support tube, a threaded sleeve is commonly sleeved between the first screw and the second screw, the thread directions of the first screw and the second screw are opposite, and the two ends of the threaded sleeve have opposite internal threads respectively.

[0007] In some embodiments, the telescopic rod is an electric telescopic rod.

[0008] In some embodiments, both ends of the arc-shaped support tube are respectively sealed with rubber pads, and the rubber pads include a plug for inserting into the support tube and a soft pad connected to the plug.

[0009] In some embodiments, the number of the arc-shaped support tubes is 3-5.

[0010] In some embodiments, at least two of the fixed bent pipes are provided with hook components, and correspondingly, the number of the traction ropes is also multiple, and the traction ropes are hung on the hook components.

[0011] The beneficial effects of the present application are as follows: In the present application, a plurality of components are supported by setting a roller frame, and at the same time, the recovery pipe and the output pipe can pass through the inner cavity of the roller frame for convenient pipe laying. By setting a telescopic rod on the roller frame and connecting the arc support pipe through the telescopic rod, when the inner diameter of the pipe to be sprayed changes, each arc support pipe can be supported again inside the pipe to be sprayed by adjusting the length of the telescopic rod, so that the application range of the present device is wider and more practical. Adjacent telescopic rods are connected and fixed by setting a fixed elbow, so that the present device can remain stable during use. The present device also changes the sliding friction between the arc support pipe and the inner wall of the pipe to be sprayed from rolling friction by setting a roller, further reducing wear. In summary, the present application can adjust the length of the telescopic rod so that the roller frame can always be located at the central axis of the pipe to be sprayed in any diameter of the pipe, thereby ensuring that the first annular pipe is located at the central axis of the pipe to be sprayed, so that the spraying effect is more uniform.

[0012] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0014] Figure 1 A schematic diagram of the overall structure of a sintered epoxy powder recovery device provided in an embodiment of the present application;

[0015] Figure 2 A schematic diagram of the cross-sectional structure of the roller drum provided in an embodiment of the present application;

[0016] Figure 3 A schematic diagram of the local structure of the rubber pad and the arc-shaped support tube provided in an embodiment of the present application.

[0017] The reference numerals in the specific implementation manner are as follows:

[0018] The sintered epoxy powder recovery device 1000 includes a built-in device 100, a roller drum 110, a telescopic rod 120, a first screw 121, a second screw 122, a threaded sleeve 123, a fixed elbow 130, a hook component 131, an arc-shaped support tube 140, a roller 141, a first annular pipe 150, a spray port 151, a second annular pipe 160, a dust collection port 161, a rubber pad 170, a plug 171, a soft pad 172, an external device 200, a power frame 210, a powder pump device 220, an output pipe 221, a negative pressure powder collection device 230, a recovery pipe 231, and a traction rope 240. DETAILED DESCRIPTION

[0019] The following will describe in detail the embodiments of the technical solution of the present application in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only used as examples and cannot be used to limit the scope of protection of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present application; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" in the specification and claims of the present application and the above-mentioned description of the drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0020] Specifically, please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of the overall structure of the sintered epoxy powder recovery device provided in an embodiment of the present application. Figure 2 This is a schematic diagram of the cross-sectional structure of the roller drum provided in the embodiment of the present application. Figure 3A schematic diagram of the local structure of the rubber pad and the arc-shaped support tube provided in the embodiment of the present application. The fused epoxy powder recovery device 1000 includes an external device 200 and a built-in device 100, wherein the built-in device 100 is used to be placed inside the pipeline, and the external device 200 is placed at one end outside the pipeline, and the external device 200 is used to implement operations such as traction of the built-in device 100. The built-in device 100 includes a roller barrel 110, which plays a supporting role. Its cross-sectional structure can be circular or polygonal, and the recovery pipe and the output pipe 221 can be arranged through the inside of the roller barrel 110. A plurality of telescopic rods 120 are arranged at intervals along the axial direction of the roller barrel 110 on the outer periphery of the roller barrel 110. The telescopic rods 120 are used to telescope according to the inner diameter of the corresponding pipeline to be sprayed to meet the size requirements during actual use. Two adjacent telescopic rods 120 are connected by a fixed elbow 130, and the structure of the built-in device 100 of the device is more stable by setting the elbow. The telescopic rod 120 extends radially along the roller barrel 110, and the other end of the telescopic rod 120 is connected to an arc-shaped support tube 140. The multiple arc-shaped support tubes 140 have the same curvature and their axes coincide with the central axis of the roller barrel 110. The multiple arc-shaped support tubes 140 can be similarly regarded as a ring, which plays a supporting role. The outer end of the arc-shaped support tube 140 is hinged with multiple rollers 141. When the internal device 100 is pulled by the external device 200 and moves along the axial direction of the pipeline to be sprayed, the rollers 141 roll synchronously along the inner wall of the pipeline. One end of the roller barrel extends to the outer side of the arc-shaped support tube 140, and the first annular pipe 150 and the second annular pipe 160 are connected to the outer side and fixedly connected in sequence through thin rods. The size of the first annular pipe 150 and the second annular pipe 160 is smaller than the inner diameter of the pipe to be sprayed, and the first annular pipe 150 and the second annular pipe 160 are coaxial with the roller barrel 110. Therefore, when the roller barrel 110 is located at the central axis of the pipe to be sprayed after adjusting each telescopic rod 120, the first annular pipe 150 and the second annular pipe 160 are coaxial with the pipe to be sprayed. A plurality of spray ports 151 are arranged on the outer periphery of the first annular pipe 150. After the powder pumping device 220 pumps the fused epoxy powder to the first annular pipe 150 through the output pipe 221, the powder will be sprayed on the inner wall of the pipe to be sprayed by each spray port 151 of the first annular pipe 150. The first annular pipe 150 and the spray port 151 are both prior art. The outer periphery of the second annular duct 160 is provided with a plurality of dust collecting ports 161. The high-speed jet generated during the spraying of the fused epoxy powder will cause the powder particles to rebound, and the rebounded powder particles can be collected through the dust collecting ports 161. The external device 200 includes a power frame 210, which plays a traction role and should be equipped with a corresponding driving device to drive the power frame 210 to move.A powder pumping device 220 and a negative pressure powder collecting device 230 are provided on the power frame 210. The powder pumping device 220 is connected to the first annular pipe 150 through an output pipe 221, and the powder collecting device is connected to the second annular pipe 160 through a recovery pipe 231. A traction rope 240 is provided between the built-in device 100 and the external device 200. The powder pumping device 220 and the negative pressure powder collecting device 230 are both existing technologies. The powder pumping device 220 is used to pump the sintered epoxy powder into the first annular pipe 150, and the negative pressure powder collecting device 230 is used to provide negative pressure and suck and collect the powder particles rebounded at the dust collecting port 161 through a recovery pipe.

[0021] As can be seen from the above, in the embodiment of the present application, the roller barrel 110 is provided to support multiple components, and the recovery pipe and the output pipe 221 can pass through the inner cavity of the roller barrel 110 to facilitate pipe laying. By providing a telescopic rod 120 on the roller barrel 110 and connecting the arc support pipe 140 through the telescopic rod 120, when the inner diameter of the pipe to be sprayed changes, the length of the telescopic rod 120 can be adjusted so that each arc support pipe 140 can be supported again inside the pipe to be sprayed, making the application range of the device wider and more practical. By providing a fixed elbow 130 to connect and fix the adjacent telescopic rods 120, the device can remain stable during use. The device also provides a roller 141 to change the sliding friction between the arc support pipe 140 and the inner wall of the pipe to be sprayed to rolling friction, thereby further reducing wear. In summary, the present application can adjust the length of the telescopic rod 120 so that the roller drum 110 can always be located at the central axis of the pipe to be sprayed in any diameter, thereby ensuring that the first annular pipe 150 is located at the central axis of the pipe to be sprayed, thereby making the spraying effect more uniform.

[0022] In some embodiments, the telescopic rod 120 includes a first screw 121 fixed on the roller barrel 110 and a second screw 122 fixed on the arc-shaped support tube 140. A threaded sleeve 123 is sleeved between the first screw 121 and the second screw 122. The thread directions of the first screw 121 and the second screw 122 are opposite, and the two ends of the threaded sleeve 123 have opposite internal threads. The embodiment of the present application provides a specific setting method of the telescopic rod 120. In the embodiment of the present application, opposite threads are respectively set at the two ends of the threaded sleeve 123 to match the first screw 121 and the second screw 122. Then, when the length of the telescopic rod 120 needs to be changed, the threaded sleeve 123 can be rotated so that the first screw 121 and the second screw 122 extend into the threaded sleeve 123 or withdraw from the threaded sleeve 123, thereby changing the overall length of the telescopic rod 120.

[0023] In some embodiments, the telescopic rod 120 is an electric telescopic rod 120. The electric telescopic rod 120 is easy to control and has good stability. When used with a PLC stand-alone machine, it is easier to control the extension of each electric telescopic rod 120 to remain consistent, thereby further ensuring that the roller barrel 110 is located at the central axis of the pipeline to be sprayed.

[0024] In some embodiments, both ends of the arc-shaped support tube 140 are respectively sealed with rubber pads 170, and the rubber pads 170 include a plug 171 for inserting into the support tube and a soft pad 172 connected to the plug 171. In the embodiment of the present application, through the above-mentioned configuration, the arc-shaped support tube 140 can be set as a hollow structure to reduce its weight, and the rubber pads 170 are set to seal both ends of the arc-shaped support tube 140 to prevent powder from entering the arc-shaped support tube 140.

[0025] In some embodiments, the number of the arc-shaped support tubes 140 is 3 to 5. In the embodiment of the present application, when the number of the arc-shaped support tubes 140 is within this range, it can meet the requirements of actual use, and at the same time, the cost is low, and has better economic benefits.

[0026] In some embodiments, at least two fixed elbows 130 are provided with hook components 131, and correspondingly, there are multiple traction ropes 240, and the traction ropes 240 are hung on the hook components 131. In the embodiment of the present application, through the above configuration, multiple traction ropes 240 are used to pull the built-in device 100, and the traction ropes 240 are hung on the fixed elbow 130, so that the action directions of the multiple traction ropes 240 on the built-in device 100 are always symmetrical and balanced, which is convenient for ensuring the stability of the built-in device 100 during movement.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A sintered epoxy powder recovery device, characterized in that: The invention comprises an external device and a built-in device, wherein the built-in device comprises a roller frame cylinder, a plurality of telescopic rods are arranged at intervals along the axial direction of the roller frame cylinder on the outer circumference of the roller frame cylinder, two adjacent telescopic rods are connected by a fixed bent pipe, the telescopic rods extend along the radial direction of the roller frame cylinder, the other end of the telescopic rods is connected to an arc-shaped support tube, the plurality of arc-shaped support tubes have the same curvature and their axes coincide with the central axis of the roller frame cylinder, a plurality of rollers are hinged on the outer end of the arc-shaped support tube, one end of the roller frame cylinder extends to the outer side of the arc-shaped support tube, and the rear outer end is connected and fixedly connected with a first annular pipe and a second annular pipe in sequence through a thin rod, a plurality of spray ports are arranged on the outer circumference of the first annular pipe, and a plurality of dust collecting ports are arranged on the outer circumference of the second annular pipe; The external device includes a power frame, on which a powder pumping device and a negative pressure powder collecting device are arranged. The powder pumping device is connected to the first annular pipe through an output pipe, and the powder collecting device is connected to the second annular pipe through a recovery pipe. A traction rope is arranged between the built-in device and the external device.

2. The fused epoxy powder recovery device according to claim 1, characterized in that: The telescopic rod includes a first screw fixed on the roller tube and a second screw fixed on the arc-shaped support tube. A threaded sleeve is commonly sleeved between the first screw and the second screw. The thread directions of the first screw and the second screw are opposite. Both ends of the threaded sleeve have opposite internal threads.

3. The fused epoxy powder recovery device according to claim 1, characterized in that: The telescopic rod is an electric telescopic rod.

4. The fused epoxy powder recovery device according to claim 1, characterized in that: Both ends of the arc-shaped support tube are respectively sealed with rubber pads, and the rubber pads include a plug for inserting into the support tube and a soft pad connected to the plug.

5. The fused epoxy powder recovery device according to claim 1, characterized in that: The number of the arc-shaped support tubes is 3-5.

6. The fused epoxy powder recovery device according to claim 1, characterized in that: At least two of the fixed elbows are provided with hook components, and correspondingly, the number of the traction ropes is also multiple, and the traction ropes are hung on the hook components.

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