Efficient brazing flux powder recovery equipment

Abstract

The utility model relates to the technical field of recovery equipment, in particular to efficient brazing flux powder recovery equipment which comprises a powder spraying room, a powder recovery body, a conical hopper and a spiral powder conveyor, and the powder recovery body comprises a fan and a filter element. The powder spraying room sprays soldering flux powder to a workpiece, about 15% of the soldering flux powder is adsorbed to the surface of the workpiece through static electricity, and part of the other 85% of the soldering flux powder floats in the space in the powder spraying room, is absorbed by negative pressure generated by operation of a fan of the powder recycling body, is separated through the filter element, is isolated on the surface of the filter element and is subjected to pulse back blowing and rapping of the filter element, and then the powder is recycled. The powder particles are vibrated to fall into the lower conical hopper, the other part of the powder falls into the conical hopper at the bottom of the powder spraying room under the influence of the gravity of the powder, finally, the brazing flux powder accumulated in the conical hopper is conveyed to the powder outlet through the spiral powder conveyor to be discharged, and the labor of manual cleaning of operators is completely abandoned.

Description

Technical Field

[0001] The utility model relates to the technical field of recycling equipment, in particular to a high-efficiency brazing flux powder recycling device. Background Art

[0002] When negatively charged powder ejected from an electrostatic spray gun hits the workpiece surface, it is electrostatically adsorbed onto the workpiece, forming the desired surface coating. However, this adsorbed powder typically only accounts for about 15% of the total spray gun output. A portion of the remaining powder remains suspended in the powder spray booth, drawn in by the powerful negative pressure of the powder recovery blower. After secondary filtration and separation by the filter element and filter, this powder adheres to the filter element's surface and is then vibrated by the filter's pulse backflush mechanism, falling into the recovery unit's bottom structure. The majority of the powder, influenced by gravity, settles in the booth's bottom structure.

[0003] In existing electrostatic powder spraying systems, epoxy or polyester inorganic powder coatings are often used. Due to their good physical properties, the powder accumulated at the bottom of the powder spraying room can be suspended and flowed again in the recovery area by compressed air. That is, after fluidization treatment, the powder is recovered by the strong negative pressure of the fan.

[0004] With the development of new-energy vehicle production capacity in my country, brazing technology for heat exchangers in new energy vehicles has undergone significant upgrades in recent years, transitioning from the outdated wet flux spray process to an electrostatic flux powder spray process. The electrostatic spray gun no longer uses traditional epoxy or polyester powders, but instead uses flux powder with specialized physical properties. Existing powder recovery technology and equipment are extremely difficult, if not impossible, to recover. Ultimately, operators still rely on manual scraping of flux powder from the bottom of the powder spray booth, which is labor-intensive and difficult to recover. Utility Model Content

[0005] The utility model aims to provide an efficient flux powder recovery device, aiming to solve the problem that the existing flux powder recovery relies on manual scraping from the bottom of the powder spraying room, which is labor-intensive.

[0006] To achieve the above-mentioned objectives, the utility model provides a high-efficiency flux powder recovery device, comprising a powder spraying room, a powder recovery body, a conical hopper and a spiral powder conveyor, wherein the conical hopper is fixedly connected to the powder spraying room and is located at the top of the powder spraying room, and the spiral powder conveyor is arranged on one side of the conical hopper, and the powder recovery body comprises a fan and a filter element, wherein the fan is fixedly connected to the powder spraying room and is located at the top of the powder spraying room, and the filter element is fixedly connected to the powder spraying room and is located on one side of the powder spraying room.

[0007] Among them, the spiral powder conveyor includes a connecting flange, a U-shaped groove, a motor, a transmission shaft and a spiral blade. The connecting flange is fixedly connected to the conical bucket and is located on one side of the conical bucket. The U-shaped groove is fixedly connected to the connecting flange and is located on the side of the U-shaped groove away from the conical bucket. The motor is arranged on one side of the U-shaped groove. The transmission shaft is fixedly connected to the output end of the motor and passes through one side of the U-shaped groove. The spiral blade is fixedly connected to the transmission shaft and is located on the outside of the spiral blade.

[0008] The high-efficiency flux powder recovery device further comprises a trolley and a powder receiving tray. The trolley is arranged on a side of the U-shaped groove away from the motor, and the powder receiving tray is arranged on the top of the trolley.

[0009] Wherein, the high-efficiency flux powder recovery equipment further includes a pneumatic vibrator, which is arranged outside the conical bucket.

[0010] The powder spraying room includes a frame, a first sprayer and a second sprayer. The frame is fixedly connected to the fan and is located on one side of the fan. The first sprayer is arranged on the top of the frame and the second sprayer is arranged at the bottom of the frame.

[0011] The utility model relates to a high-efficiency flux powder recovery device. The powder spraying room sprays flux powder onto the workpiece, wherein about 15% of the flux powder is electrostatically adsorbed on the surface of the workpiece, and a part of the remaining 85% of the flux powder floats in the space inside the powder spraying room and is absorbed by the negative pressure generated by the operation of the blower of the powder recovery body. The powder is separated by the filter element and isolated on the surface of the filter element. Then, a set of compressed air pulse back-blowing vibration mechanism (existing technology) specially set for self-cleaning of the filter element surface is used to pulse-vibrate the filter element from the inside of the filter element, and the powder attached to the outer surface of the filter element is vibrated off, so that the powder particles are vibrated. The powder will fall into the conical bucket below, while the remaining powder will fall into the conical bucket at the bottom of the powder spraying room due to its own gravity. Finally, the accumulated flux powder in the conical bucket is conveyed to the powder outlet by the spiral powder conveyor, completely eliminating the need for manual cleaning by operators. The powder recovery equipment can activate the spiral powder conveyor based on the amount of flux powder accumulation observed by the operator, allowing timely cleaning and recovery of the powder. The spiral powder conveyor can also be automatically activated at a scheduled time by program design, thus achieving a production rhythm in which electrostatic powder spraying and powder recovery can be carried out simultaneously. This avoids the drawback of large amounts of accumulated flux powder not being able to be recovered in time due to production ahead of time, frees operators from heavy physical labor, and is conducive to the management of clean production in enterprises. It also solves the problem of existing flux powder recovery relying on manual scraping from the bottom of the powder spraying room, which is labor-intensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0013] Figure 1 This is a structural schematic diagram of a high-efficiency flux powder recovery device of the present invention (the filter element is not shown).

[0014] Figure 2 It is a side view of a high-efficiency flux powder recovery device of the utility model.

[0015] Figure 3 This is a front view of a high-efficiency flux powder recovery device of the present invention (the fan is not shown).

[0016] Figure 4 The utility model is a structural schematic diagram of a spiral powder conveyor of a high-efficiency flux powder recovery device.

[0017] In the figure: 1-conical bucket, 2-fan, 3-filter element, 4-connecting flange, 5-U-shaped groove, 6-motor, 7-drive shaft, 8-spiral blade, 9-trolley, 10-powder receiving tray, 11-pneumatic vibrator, 12-frame, 13-first sprayer, 14-second sprayer. DETAILED DESCRIPTION

[0018] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] See also Figures 1 to 4 The utility model provides a high-efficiency flux powder recovery device, including a powder spraying room, a powder recovery body, a conical bucket 1 and a spiral powder conveyor, wherein the conical bucket 1 is fixedly connected to the powder spraying room and is located on the top of the powder spraying room, and the spiral powder conveyor is arranged on one side of the conical bucket 1, and the powder recovery body includes a fan 2 and a filter element 3, wherein the fan 2 is fixedly connected to the powder spraying room and is located on the top of the powder spraying room, and the filter element 3 is fixedly connected to the powder spraying room and is located on one side of the powder spraying room.

[0020] In this embodiment, the powder spraying room sprays flux powder onto the workpiece, of which about 15% is electrostatically adsorbed on the surface of the workpiece, and the remaining 85% of the flux powder partially floats in the space inside the powder spraying room and is absorbed by the negative pressure generated by the operation of the blower 2 of the powder recovery body, and is separated by the filter element 3, isolating the powder on the surface of the filter element 3, and then passing through a set of compressed air pulse back-blowing vibration mechanism (existing technology) specially set for self-cleaning of the surface of the filter element 3, the filter element 3 is pulsed and vibrated from the inside of the filter element 3, and the powder attached to the outer surface of the filter element 3 is vibrated off, so that the powder particles are vibrated and fall into the filter element 3. The powder falls into the conical bucket 1 below, while another part of the powder falls into the conical bucket 1 at the bottom of the powder spraying room due to its own gravity. Finally, the accumulated flux powder in the conical bucket 1 is conveyed to the powder outlet by the spiral powder conveyor for discharge, completely eliminating the operator's manual cleaning work. The powder recovery equipment can activate the spiral powder conveyor based on the operator's observation of the amount of flux powder sedimentation and accumulation, so that the powder can be cleaned and recovered in a timely manner. The spiral powder conveyor can also be automatically activated at a fixed time through program design, solving the problem of electrostatic powder spraying and powder recovery being able to proceed simultaneously in production. It avoids the disadvantage of large amounts of accumulated flux powder not being able to be recovered in time due to production ahead, frees operators from heavy physical labor, and is conducive to the company's clean production management. It solves the problem of existing flux powder recovery relying on manual scraping from the bottom of the powder spraying room, which is labor-intensive.

[0021] Furthermore, the spiral powder conveyor includes a connecting flange 4, a U-shaped groove 5, a motor 6, a transmission shaft 7 and a spiral blade 8. The connecting flange 4 is fixedly connected to the conical bucket 1 and is located on one side of the conical bucket 1. The U-shaped groove 5 is fixedly connected to the connecting flange 4 and is located on the side of the U-shaped groove 5 away from the conical bucket 1. The motor 6 is arranged on one side of the U-shaped groove 5. The transmission shaft 7 is fixedly connected to the output end of the motor 6 and passes through one side of the U-shaped groove 5. The spiral blade 8 is fixedly connected to the transmission shaft 7 and is located on the outside of the spiral blade 8.

[0022] In this embodiment, when the powder at the bottom of the conical bucket 1 accumulates to a certain amount, the operator starts the motor 6 by pressing the start button, and the output end of the motor 6 rotates, driving the transmission shaft 7 and the spiral blade 8 to rotate. Since there is a certain angle between the spiral blade 8 and the transmission shaft 7 axially, the rotation of the spiral blade 8 will generate a forward thrust in the horizontal direction, and the powder introduced into the U-shaped groove 5 by the conical bucket 1 is transported to the powder outlet for discharge, completely eliminating the operator's manual cleaning labor.

[0023] Furthermore, the efficient flux powder recovery device further comprises a trolley 9 and a powder receiving tray 10 . The trolley 9 is arranged on the side of the U-shaped groove 5 away from the motor 6 , and the powder receiving tray 10 is arranged on the top of the trolley 9 .

[0024] In this embodiment, the powder receiving tray 10 is used to receive the powder discharged from the U-shaped groove 5 , and the trolley 9 is used to place the powder receiving tray 10 , so that the operator can easily pull out the powder in the powder receiving tray 10 .

[0025] Furthermore, the high-efficiency flux powder recovery device further includes a pneumatic vibrator 11 , which is disposed outside the conical bucket 1 .

[0026] In this embodiment, considering the easy agglomeration of flux powder particles, the pneumatic vibrator 11 is provided on the outer side of the conical bucket 1 . The provision of the pneumatic vibrator 11 is conducive to vibrating the flux powder into the bottom of the conical bucket 1 .

[0027] Furthermore, the powder spraying room includes a frame 12, a first sprayer 13 and a second sprayer 14. The frame 12 is fixedly connected to the fan 2 and is located on one side of the fan 2. The first sprayer 13 is arranged at the top of the frame 12, and the second sprayer 14 is arranged at the bottom of the frame 12.

[0028] In this embodiment, the setting of the frame 12 provides installation conditions for the first sprayer 13 and the second sprayer 14. The first sprayer 13 and the second sprayer 14 are used to spray both sides of the workpiece.

[0029] The above disclosure is merely a preferred embodiment of an efficient flux powder recovery device of the present application and is not intended to limit the scope of the present application. A person skilled in the art will appreciate that any equivalent changes made by implementing all or part of the processes of the above embodiment in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. An efficient flux powder recovery device, characterized in that: It includes a powder spraying room, a powder recovery body, a conical hopper and a spiral powder conveyor. The conical hopper is fixedly connected to the powder spraying room and is located on the top of the powder spraying room. The spiral powder conveyor is arranged on one side of the conical hopper. The powder recovery body includes a fan and a filter element. The fan is fixedly connected to the powder spraying room and is located on the top of the powder spraying room. The filter element is fixedly connected to the powder spraying room and is located on one side of the powder spraying room.

2. The high-efficiency flux powder recovery equipment according to claim 1, characterized in that: The spiral powder conveyor includes a connecting flange, a U-shaped groove, a motor, a transmission shaft and a spiral blade. The connecting flange is fixedly connected to the conical bucket and is located on one side of the conical bucket. The U-shaped groove is fixedly connected to the connecting flange and is located on the side of the U-shaped groove away from the conical bucket. The motor is arranged on one side of the U-shaped groove. The transmission shaft is fixedly connected to the output end of the motor and passes through one side of the U-shaped groove. The spiral blade is fixedly connected to the transmission shaft and is located on the outside of the spiral blade.

3. The high-efficiency flux powder recovery equipment according to claim 2, characterized in that: It also includes a trolley and a powder receiving pan. The trolley is arranged on a side of the U-shaped groove away from the motor, and the powder receiving pan is arranged on the top of the trolley.

4. The high-efficiency flux powder recovery equipment according to claim 2, characterized in that: It also includes a pneumatic vibrator, which is arranged on the outside of the conical bucket.

5. The high-efficiency flux powder recovery equipment according to claim 4, characterized in that: The powder spraying room includes a frame, a first sprayer and a second sprayer. The frame is fixedly connected to the fan and is located on one side of the fan. The first sprayer is arranged on the top of the frame, and the second sprayer is arranged at the bottom of the frame.

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