CN209061453U - A powder spray booth for electrostatic spraying - Google Patents

Abstract

The utility model relates to the technical field of powder spraying, and discloses a powder spraying room for electrostatic spraying, which comprises a first room body structure and a second room body structure. The first room body structure is divided into a spraying area and a supplementary spraying area. The second housing structure is close to and communicated with the supplementary injection area. Outside the second housing structure is a pulse recovery device whose inlet is communicated with the second housing structure. The pulse recovery device includes a fan, a pulse filter element, a pulse solenoid valve and a powder recovery device. The bucket, the fan is located at the upper part of the pulse recovery device, the pulse filter element and the pulse solenoid valve are located in the middle of the pulse recovery device, and the pulse filter element is communicated with the fan through the pulse solenoid valve; the powder recovery bucket is located at the bottom of the pulse recovery device and is detachably connected to the pulse recovery device , There is a roller at the bottom of the powder recovery barrel. The utility model can help to check and guarantee the powder spraying quality of the workpiece in real time.

Description

A powder spray booth for electrostatic spraying

technical field

The utility model relates to the technical field of powder spraying, in particular to a powder spraying room used for electrostatic spraying.

Background technique

The surface of metal structural parts, cold-rolled steel sheet, galvanized steel sheet and aluminum sheet will be sprayed with external powder in order to maintain a long-term aesthetic effect and service life. Among them, electrostatic powder spraying is the most popular.

In order to protect the environment and avoid pollution, electrostatic spraying is usually carried out in the powder spraying room. The powder spraying room is generally equipped with an inlet and outlet and a hanging conveyor chain at the top of the powder spraying room. The workpiece is transported into the powder spraying room through the hanging conveyor chain. The powder spraying operation is carried out through the powder spraying pipe and the powder spraying head fixedly set in the powder spraying room until the workpiece is transported out of the discharge port. In summary, the powder spraying treatment of the workpiece is too simple, and the residue remains on the workpiece. The excess powder on the surface is not conducive to the quality assurance of the workpiece; the powder room cannot insist on long-term and effective guarantee of the powder spraying quality, and it is necessary to manually clean the sticky powder in the room; in order to ensure the spraying quality and the recycling of the excess powder in the room, In some powder spraying rooms, a vacuuming or blowing device is installed in the room, and the walls and top surface of the powder spraying room are effectively vacuumed and cleaned by wind force, but the vacuuming device can only be installed after the powder spraying work is stopped. Use, only to ensure the quality of part of the powder spraying after cleaning, which is not conducive to real-time protection of the powder spraying quality of the workpiece during the production process.

Utility model content

The technical problem to be solved by the utility model is that, aiming at the above-mentioned deficiencies of the prior art, a powder spraying room for electrostatic spraying which can guarantee the powder spraying quality of the workpiece in real time is proposed.

The utility model solves its technical problems, and adopts the following technical solutions:

A powder spraying room for electrostatic spraying, comprising a first room body structure and a second room body structure, the first room body structure is divided into a spraying area and a supplementary spraying area, and the second room body structure is close to the The supplementary spraying area is connected with it, and a pulse recovery device whose inlet is communicated with the second room structure is provided outside the second housing structure. The pulse recovery device includes a fan, a pulse filter element, a pulse solenoid valve and a powder. a recovery bucket, the fan is located at the upper part of the pulse recovery device, the pulse filter element and the pulse solenoid valve are located in the middle of the pulse recovery device, and the pulse filter element communicates with the fan through the pulse solenoid valve; The powder recovery bucket is located at the bottom of the pulse recovery device and is detachably connected to the pulse recovery device, and a roller is provided at the bottom of the powder recovery bucket.

In the above technical scheme, the first room structure of the powder spraying room is not only provided with a spraying area for the first complete spraying of the workpiece, but also a supplementary spraying area for quality inspection of the workpiece after the powder spraying in the spraying area. Inspection, in order to carry out powder re-spraying for the defective workpiece. After the re-spraying, the workpiece can be sent to the second room structure after transmission. The pulse recovery device can realize the pipeline cleaning of the residual powder on the surface of the workpiece. The second room structure Setting up a relatively independent structure from the first chamber structure is beneficial to avoid a large amount of powder in the first chamber structure flowing to the second chamber structure, resulting in greatly reduced cleaning effect of the pulse recovery device or frequent replacement of the pulse filter element. To sum up, the above design is conducive to ensuring the orderly quality inspection of the powder spraying effect of the workpiece during the assembly line production process, and is conducive to the real-time check and guarantee of the powder spraying quality.

Further, the supplementary spray area is provided with a powder spray gun, a moving mechanism for driving the powder spray gun to move along the extension direction of the supplementary spray area, and a lift mechanism for driving the powder spray gun to rise and fall.

Further, the moving mechanism includes a sliding guide rail fixed at the bottom of the supplementary spray area and a walking support frame that cooperates with the sliding guide rail and supports the lifting mechanism.

Further, the lifting mechanism is a telescopic cylinder or a screw lifting platform.

Further, both sides of the bottom of the first housing structure are fitted with the sidewalls of the first housing structure and are respectively provided with powder recovery bins extending from the feeding port of the spraying area to the discharge port of the spraying area, Two support plates are vertically installed at the bottom of the first room structure between the two powder recovery bins, and the upper ends of the two support plates are connected with an inverted V-shaped plate. The ends on both sides respectively extend to above the powder recovery bin on the corresponding side.

Further, the powder recovery bin is connected with the bottom of the first housing structure through slide rails and rollers.

Further, a screw rod extending along the length direction of the powder recovery bin is arranged above the powder recovery bin, a moving push plate is passed through the screw rod, and one end of the mobile push plate extends into the powder recovery bin. inside and in contact with the bottom and both sides of the powder recovery bin, and one side of the powder recovery bin is provided with a drive motor for driving the screw to rotate.

Further, an opening is provided on the other side of the powder recovery bin, and the opening is communicated with a flexible air duct outside the first housing structure.

Further, the top of the V-shaped plate is provided with an air knife.

Further, the first housing structure and the second housing structure are made of cold-rolled steel plate by spray plastic.

Compared with the prior art, the utility model has the beneficial effects that the powder spraying process of the assembly line can be checked and guaranteed in real time and the powder spraying quality can be prevented, and the residual powder on the workpiece after being transported out of the powder spraying room can be prevented from polluting the environment.

Description of drawings

In order to illustrate the embodiments of the present utility model more clearly and in detail, the accompanying drawings are as follows:

1 is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

2 is a schematic structural diagram of a pulse recovery device according to Embodiment 1 of the present invention;

Fig. 3 is the structural schematic diagram of the supplementary spraying area of Embodiment 2 of the present utility model;

Fig. 4 is the preferred structural schematic diagram of the spraying area in Embodiment 2 of the present utility model;

FIG. 5 is a schematic structural diagram of a powder recovery bin according to Embodiment 2 of the present invention.

Detailed ways

The following are specific embodiments of the present utility model combined with the accompanying drawings to further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

Example 1

As shown in FIG. 1 and FIG. 2 , this embodiment provides a powder spray booth for electrostatic spraying, including a first room structure 100 and a second room structure 200 , and the first room structure 100 and the second room structure The structure 200 is two independent housing structures, and the two are connected to each other, but the diameter of the passage should be set as small as possible, only for the transportation and circulation of workpieces. The hanging conveyor chain in the prior art is set in the first housing structure 100 and the top of the second room structure 200, while the tops of the first room structure 100 and the second room structure 200 only have small openings for hook placement and transmission, and the hanging conveyor chain can also be fixed to the first room. Below the top of the body structure 100 and the second room body structure 200, the hanging conveyor chain is located in the room to avoid the opening of small openings;

The first room structure 100 is divided into a spraying area 110 and a supplementary spraying area 120. The spraying area 110 is used to realize the powder spraying process of the workpiece, and the equipment of its internal equipment can refer to the construction of powder spraying facilities in the prior art, such as The powder spraying pipe, powder spraying head and dust collection equipment are set up. The supplementary spraying area 120 is used to realize the supplementary spraying of the defective sprayed workpieces and realize the quality inspection of the powder spraying quality. It should be noted that the supplementary spraying area 120 is preferred. There is a transparent window on the wall of the first house body structure 100, so that workers can check the quality of powder spraying from outside the first house body structure 100, and perform supplementary spraying, so as to ensure the health and safety of workers; Set up surveillance cameras, use machine vision technology instead of human eyes to help workers discover quality defects scientifically, and prompt workers to re-spray at corresponding positions;

The second room structure 200 is close to the supplementary injection area 120 and communicates with the supplementary injection area 120 . The second room structure 200 is provided with a pulse recovery device 300 whose inlet is communicated with the second room structure 200 . , is used to recover the powder that is not electrostatically adsorbed on the workpiece through the change of positive and negative air pressure in the second room structure 200, so as to ensure the surface smoothness of the workpiece and the quality of powder spraying, and at the same time prevent the workpiece from being transported out of the powder spraying room in the later stage. In order to improve the working efficiency and work quality of the pulse recovery device 300, it is preferable that the setting space of the second housing structure 200 be as small as possible; the pulse recovery device 300 includes a fan 310, a pulse filter element 320, a pulse Solenoid valve 330 and powder recovery bucket 340, the fan 310 is located in the upper part of the pulse recovery device 300, the pulse filter element 320 and the pulse solenoid valve 330 are located in the middle of the pulse recovery device 300, the pulse filter element 320 The fan 310 is communicated with the pulse solenoid valve 330; the powder recovery bucket 340 is located at the bottom of the pulse recovery device 300 and is detachably connected to the pulse recovery device 300. The powder recovery bucket 340 is provided at the bottom There are scroll wheels. When a lot of recycled powder is accumulated in the powder recovery bucket 340 or color-changing production is required, the powder recovery bucket 340 can be replaced more conveniently and quickly due to the arrangement of the rollers and the detachable connection.

The working principle of the pulse recovery device 300 is as follows: after the fan 310 is turned on, since the inlet of the pulse recovery device 300 is connected to the second room structure 200, the second room structure 200 contains the workpiece after powder spraying and supplementary spraying. When the powder that is not electrostatically adsorbed remains on the filter element, under the action of negative air pressure, the powder will be sucked into the pulse recovery device 300, and filtered by the pulse filter element 320, the powder will be filtered on the outer surface of the pulse filter element 320, and after purification The air entering the fan 310 along the inner cavity of the pulse filter element 320 is finally discharged to the corresponding recovery treatment port; after a period of use, the powder on the outer surface of the pulse filter element 320 accumulates more and more, in order to make the pulse filter element 320 have better permeability The pulse backflushing system inside the pulse recovery device 300 opens the pulse solenoid valve 330 at regular intervals, sprays the compressed air to the pulse filter element 320 from the inside to the outside, and blows the powder adhering to the surface of the pulse filter element 320 to the The powder recovery bucket 340 makes the surface micropores unblocked, and the powder recovery bucket 340 is cleaned once for a period of time.

In the above technical solution, the first room body structure 100 of the powder spraying room is not only provided with a spraying area 110 for the first complete spraying of the workpiece, but also a supplementary spraying area 120, which is used for spraying the spraying area 110 after the completion of the spraying. The quality inspection of the workpiece is carried out so as to perform powder supplementary spraying on the defective workpiece. After the supplementary spraying is completed, the workpiece can be sent to the second room structure 200 after transmission. The second room structure 200 and the first room structure 100 are set as relatively independent structures, which is beneficial to avoid a large amount of powder in the first room structure 100 flowing to the second room structure 200, resulting in a great cleaning effect of the pulse recovery device 300. Reduce or frequently replace the pulse filter 320 problem. To sum up, this embodiment is beneficial to ensure the orderly quality inspection of the powder spraying effect of the workpiece during the production process of the assembly line, and is conducive to the real-time check and guarantee of the powder spraying quality.

Example 2

As shown in FIG. 3 , the difference between this embodiment and Embodiment 1 is that the supplementary spray area 120 is provided with a powder spray gun 121 for driving the powder spray gun 121 along the extension direction of the supplementary spray area 120 (same as The moving mechanism 122 for moving the workpiece transporting direction) and the lifting mechanism 123 for driving the powder spray gun 121 to rise and fall. The powder spraying gun 121 , the moving mechanism 122 and the lifting mechanism 123 are provided on both sides of the supplementary spraying area 120 , so as to simultaneously perform supplementary spraying operations on both sides of the workpiece. The powder spray gun 121 is connected with an air pump and a powder supply bucket through a powder pipeline, and the air pump is used to pump the powder in the powder supply bucket into the powder pipeline for spraying by the powder spray gun 121 . The above design, through the adjustment of the moving mechanism 122 and the lifting mechanism 123, facilitates the positioning of the supplementary spraying position, facilitates the replacement of personnel's supplementary spraying in the powder spraying room by automatic supplementary spraying, and is beneficial to the health of the operator.

The moving mechanism 122 includes a sliding guide rail 1221 fixed at the bottom of the supplementary spray area 120 and a walking support frame 1222 that cooperates with the sliding guide rail 1221 and supports the lifting mechanism 123 . The walking support frame 1222 includes a walking wheel at the lower end that cooperates with the sliding guide rail 1221. The walking wheel can be driven by a motor. The walking wheel can be a crawler-type walking wheel. support.

The elevating mechanism 123 is a telescopic cylinder or a screw lifting platform, the telescopic cylinder is vertically arranged, and is connected with the powder spray gun 121 through a telescopic rod, so that the powder spray gun 121 can be lifted and lowered in the vertical direction.

As shown in FIG. 4 and FIG. 5 , two sides of the bottom of the first room structure 100 are attached to the side walls of the first room structure 100 and are respectively provided with a feeding port extending from the spraying area 110 to the spraying In the powder recovery bin 130 of the discharge port of the zone 110, two support plates 111 are vertically installed at the bottom of the first housing structure 100 between the two powder recovery bins 130, and the two support plates 111 An upside-down V-shaped plate 112 is connected to the upper end, and two ends of the V-shaped plate 112 respectively extend above the powder recovery bin 130 on the corresponding side. The arrangement of the V-shaped plate 112 can facilitate that after the powder falls during the powder spraying process of the workpiece, the powder can be slid along the V-shaped plate 112 in a concentrated manner into the powder recovery bins 130 on both sides for recovery. Preferably, the V-shaped plate 112 is a smooth, spray-coated cold plate.

Optionally, the powder recovery bin 130 is connected to the bottom of the first housing structure 100 through slide rails and rollers. It is used to realize the detachment of the powder recovery bin 130 and the first housing structure 100 , which is beneficial to facilitate powder recovery in the powder recovery bin 130 , replacement and cleaning of the powder recovery bin 130 .

Optionally, a screw rod 131 extending along the length direction of the powder recovery bin 130 is provided above the powder recovery bin 130, and a moving push plate 132 (not shown in FIG. 4 , see 5), one end of the moving push plate 132 extends into the powder recovery bin 130 and contacts the bottom and both sides of the powder recovery bin 130. One side of the powder recovery bin 130 is provided with a drive for the The drive motor 133 for the rotation of the screw 131 . In order to facilitate the placement of the drive motor 133, the drive motor 133 is not directly connected to the lead screw 131 through a coupling, but is driven by a gear at one end of the shaft of the drive motor 133 to a gear at one end of the lead screw 131 to drive the lead screw 131 to rotate.

Specifically, a threaded hole is provided at the center of one side of the moving push plate 132 , the moving push plate 132 is sleeved on the screw rod 131 through the screw hole and is threadedly connected with the screw rod 131 , and the driving motor 133 drives the screw rod 131 to rotate. , thereby driving the moving push plate 132 to move along the powder recovery bin 130 to push the powder on one side of the powder recovery bin 130 to the other side. Preferably, guide rods arranged in parallel with the screw rod 131 are respectively provided above the two side walls of the powder recovery bin 130, and the moving push plate 132 is provided with socket holes for socketing with the guide rods on both sides, thereby further limiting The freedom of moving the push plate 132 makes the moving push plate 132 move along the direction specified by the guide rod, and is always vertical to the powder recovery bin 130 when moving, so that the moving push plate 132 can fully concentrate the powder in the powder recovery bin 130 Push to the other side of the powder recovery bin 130 .

Further, the other side of the powder recovery bin 130 is provided with an opening, and the opening communicates with the flexible air duct outside the first housing structure 100 . The flexible air duct is connected to the centrifugal mixer through an air pump, and the powder to be recovered is pumped into the centrifugal mixer 130 to be collected at the opening to be mixed with new powder in a certain proportion, which is beneficial to the recycling of the powder in the powder recovery silo 130 .

Preferably, the top of the V-shaped plate 112 is provided with an air knife 400, and the air knife 400 is used for blowing air to both sides, and the powder falling on the workpiece is quickly and effectively guided to the powder recovery on both sides by the action of air flow and gravity. In the bin 130 , the adhesion and hardening of the powder on the V-shaped plate 112 are avoided.

The first housing structure 100 and the second housing structure 200 are made of cold-rolled steel plate by spray plastic. The smooth and smooth surface is conducive to the cleaning of powder and improve the efficiency of color changing. Preferably, the tops of the first room structure 100 and the second room structure 200 are provided with lighting devices.

The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or replace them in similar ways, but will not deviate from the spirit of the present invention or go beyond the appended claims the defined range.

Claims (10)

1. a kind of powder spraying chamber for electrostatic spraying, which is characterized in that described including the first room body structure and the second room body structure It is divided into spraying area in first room body structure and the area that fills spray, the second room body structure is close to fill spray area and in communication, the institute State the pulse recyclable device that the second room body structure is externally provided with entrance Yu the second room body fabric connectivity, the pulse recyclable device Including blower, pulse filter core, impulse electromagnetic valve and Powder Recovery bucket, the blower is located at the upper of the pulse recyclable device Portion, the pulse filter core and the impulse electromagnetic valve are located at the middle part of the pulse recyclable device, and the pulse filter core passes through institute Impulse electromagnetic valve is stated to be connected to the blower；The Powder Recovery bucket position in the pulse recyclable device bottom and with the arteries and veins Refunds receiving apparatus is detachably connected, and the bottom of the Powder Recovery bucket is equipped with idler wheel.

2. a kind of powder spraying chamber for electrostatic spraying according to claim 1, which is characterized in that the area that fills spray is equipped with spray Powder rifle, for drive the podwer gun to fill spray described in mobile mechanism that area's extending direction moves and for driving described dust The elevating mechanism of rifle lifting.

3. a kind of powder spraying chamber for electrostatic spraying according to claim 2, which is characterized in that the mobile mechanism includes It is fixed on the sliding guide rail of the area bottom that fills spray and matches with the sliding guide rail and merge the walking branch for supporting the elevating mechanism Support.

4. a kind of powder spraying chamber for electrostatic spraying according to claim 2, which is characterized in that the elevating mechanism is to stretch Contracting cylinder or screw rod lifting platform.

5. a kind of powder spraying chamber for electrostatic spraying according to claim 1, which is characterized in that the first room body structure Two sides of the bottom, which are bonded the first room body structure side wall and are respectively equipped with, extends to the spraying area by the feed inlet of the spraying area The Powder Recovery storehouse of discharge port, it is vertically-mounted at the first room body structural base between two Powder Recovery storehouses There are two pieces of support plates, two pieces of support plate upper ends are connected with inverted V shaped slab, and the both side ends of the V shaped slab extend respectively To the Powder Recovery storehouse of respective side.

6. a kind of powder spraying chamber for electrostatic spraying according to claim 5, which is characterized in that the Powder Recovery storehouse is logical Sliding rail and idler wheel is crossed to connect with the first room body structural base.

7. a kind of powder spraying chamber for electrostatic spraying according to claim 5, which is characterized in that on the Powder Recovery storehouse Side is equipped with the screw rod extended along Powder Recovery storehouse length direction, is equipped with mobile push plate on the screw rod, the movement pushes away One end of plate protrude into the Powder Recovery storehouse and with the bottom in the Powder Recovery storehouse and two sides face contact, the Powder Recovery Storehouse side is equipped with the driving motor for driving the screw rod rotation.

8. a kind of powder spraying chamber for electrostatic spraying according to claim 7, which is characterized in that the Powder Recovery storehouse is another Side is equipped with opening, and the opening is connected to the flexible duct outside the first room body structure.

9. a kind of powder spraying chamber for electrostatic spraying according to claim 5, which is characterized in that the top of the V shaped slab Equipped with air knife.

10. a kind of powder spraying chamber for electrostatic spraying according to claim 1, which is characterized in that the first room body knot Structure and the second room body structure are made of cold-rolled steel sheet plastic-spraying.