Paint mist filtering mechanism for coating spray booth

Abstract

The utility model discloses a paint mist filtering mechanism for a coating spray booth, which comprises a frame, a paint mist filter, a clamping component and a control component, one side of the frame is provided with an airflow inlet communicated with an air outlet, and the other side of the frame is provided with an airflow outlet communicated with a negative pressure suction source. The rack defines an accommodating space between the airflow inlet and the airflow outlet. The paint mist filter is detachably arranged in the containing space, and the airflow inlet, the paint mist filter and the airflow outlet are in airflow communication in sequence. The clamping assembly is arranged on the rack and used for clamping the paint mist filter. The control assembly comprises a controller and a detection module arranged on the rack and used for detecting the mounting position of the paint mist filter, the controller is in signal connection with the detection module, and the controller is configured to control the clamping assembly to clamp the paint mist filter based on a detection signal of the detection module. And the paint mist filter can be quickly mounted only by pushing the paint mist filter into the accommodating space manually or by carrying equipment, so that the operation is simpler, and the efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of surface coating, in particular to a paint mist filtering mechanism used in a coating spray booth. Background Art

[0002] On the coating production line, the workpiece is sent to the spray booth for surface painting, so that the surface of the workpiece is covered with a layer of paint coating. The paint coating can provide a protective layer against corrosion, oxidation and wear for the workpiece, and extend the service life of the workpiece. The spray booth is equipped with spray equipment, which (such as a spray gun) sprays paint from the nozzle through a high-speed airflow to form fine paint particles. During the spraying process, some paint does not adhere evenly to the surface of the workpiece, but is dispersed in the air in a mist form to form paint mist. In order to reduce the pollution of paint mist to the environment and improve the spraying efficiency, the coating production line is usually equipped with a paint mist filtration system to capture and process the paint mist. The spray booth is usually equipped with an air inlet, an air outlet and an air supply system. A paint mist filter is usually installed at the air outlet of the spray booth to absorb the paint mist gas discharged from the air outlet to filter out the paint particles in the paint mist gas, and the filtered gas is discharged to the external environment. The traditional method is to directly install the paint mist filter at the air outlet of the spray booth through a bolt assembly. During installation, the bolt assembly needs to be manually screwed multiple times, which is time-consuming and cumbersome to operate, and the installation efficiency is low. Therefore, there is an urgent need for a paint mist filtering mechanism that can quickly install the paint mist filter. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a paint mist filtering mechanism for a painting spray booth, which can realize quick installation of the paint mist filter.

[0004] To this end, the utility model provides a paint mist filtering mechanism for a painting spray booth, which is arranged at the air outlet of the painting spray booth, and the paint mist filtering mechanism includes:

[0005] A frame, one side of which is provided with an air flow inlet connected to the air outlet, and the other side of which is provided with an air flow outlet connected to a negative pressure suction source, wherein the frame defines an accommodation space between the air flow inlet and the air flow outlet;

[0006] A paint mist filter is detachably disposed in the accommodating space, and the air flow inlet, the paint mist filter and the air flow outlet are sequentially connected by air flow;

[0007] A clamping assembly, disposed on the frame and used for clamping the paint mist filter;

[0008] The control component includes a controller, wherein the controller is connected to the clamping component by signal and is used to control the clamping component to clamp or release the paint mist filter.

[0009] According to one embodiment of the utility model, the control component includes a first pressure sensor and a second pressure sensor connected to the controller signal, the first pressure sensor is arranged at the air flow inlet, and the second pressure sensor is arranged at the air flow outlet. A pressure difference threshold is preset in the controller, and the controller is configured to control the clamping assembly to release the paint mist filter when the difference between the detection value of the first pressure sensor and the detection value of the second pressure sensor is greater than or equal to the pressure difference threshold.

[0010] According to one embodiment of the utility model, the control component includes an alarm module connected to the controller signal and used to send an alarm signal to the outside, and the controller is configured to control the alarm module to send an alarm signal to the outside when the difference between the detection value of the first pressure sensor and the detection value of the second pressure sensor is greater than or equal to the pressure difference threshold.

[0011] According to an embodiment of the present invention, the paint mist filtering mechanism includes a guide component for guiding the paint mist filter into the accommodating space.

[0012] According to an embodiment of the present invention, the guide assembly includes a pair of support rails arranged along opposite sides of the frame and extending into the accommodating space, and a plurality of guide wheels rotatably disposed on the support rails.

[0013] According to an embodiment of the present utility model, a plurality of guide wheels are arranged at intervals along the extension direction of the support rail.

[0014] According to an embodiment of the utility model, a ramp portion extending downwardly from a horizontal plane is provided on an end portion of the support rail away from the frame.

[0015] According to one embodiment of the utility model, the clamping assembly includes a pair of lower clamping modules arranged on opposite sides of the lower part of the frame and used to clamp the lower side of the paint mist filter, and an upper clamping module arranged on the upper part of the frame and used to clamp the upper side of the paint mist filter.

[0016] According to one embodiment of the utility model, the lower clamping module includes a lower clamping cylinder installed on a frame, a clamping connecting rod hinged on the frame and having one end drivingly connected to the lower clamping cylinder, and a lower clamping part connected to the other end of the clamping connecting rod.

[0017] According to an embodiment of the utility model, the upper clamping module comprises an upper clamping cylinder mounted on the frame, and an upper clamping part hinged on the frame and with one end drivingly connected to the upper clamping cylinder.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] The paint mist filtering mechanism of the utility model includes a frame, a paint mist filter, a clamping assembly and a control assembly. An air flow inlet connected to an air outlet is provided on one side of the frame, and an air flow outlet connected to a negative pressure suction source is provided on the other side. The frame defines a accommodating space between the air flow inlet and the air flow outlet. The paint mist filter is detachably arranged in the accommodating space, and the air flow inlet, the paint mist filter and the air flow outlet are connected in sequence by air flow. The clamping assembly is arranged on the frame and is used to clamp the paint mist filter. The control assembly includes a controller, which is connected to the clamping assembly signal and is used to control the clamping assembly to clamp or release the paint mist filter. Only manual labor or handling equipment is required to push the paint mist filter into the accommodating space, and the controller is used to realize the quick installation of the paint mist filter, which is simpler to operate and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of a paint mist filtering mechanism of an embodiment of the utility model without a paint mist filter installed;

[0021] Figure 2 yes Figure 1 A local enlarged view of point A shown in FIG;

[0022] Figure 3 It is a side view schematic diagram of a paint mist filter mechanism equipped with a paint mist filter according to an embodiment of the utility model;

[0023] Figure 4 yes Figure 3 A local enlarged view of point B shown in FIG.

[0024] Figure 5 The paint mist filter of the utility model is to be installed to Figure 1 Schematic diagram of the paint mist filtering mechanism shown in ;

[0025] Figure 6 The paint mist filter of the utility model is installed to Figure 1 Schematic diagram of the paint mist filtering mechanism shown in ;

[0026] Figure 7 This is a schematic diagram of the control flow of a paint mist filtering mechanism according to an embodiment of the utility model;

[0027] The reference numerals are as follows:

[0028] 100. Paint mist filtering mechanism;

[0029] 1. Rack; 11. Airflow inlet; 12. Airflow outlet; 13. Accommodation space;

[0030] 2. Paint mist filter;

[0031] 3. Clamping assembly; 31. Lower clamping module; 311. Lower clamping cylinder; 312. Clamping connecting rod; 313. Lower clamping part; 32. Upper clamping module; 321. Upper clamping cylinder; 322. Upper clamping part;

[0032] 4. Control component; 41. Controller; 42. Detection module; 43. First pressure sensor; 44. Second pressure sensor; 45. Alarm module;

[0033] 5. Guide assembly; 51. Support guide rail; 52. Guide wheel; 53. Ramp part. DETAILED DESCRIPTION

[0034] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction on the technical solution of the utility model.

[0035] according to Figure 1 As shown, one embodiment of the utility model provides a paint mist filtering mechanism 100 for a painting spray booth, and the paint mist filtering mechanism 100 is arranged at the air outlet of the painting spray booth.

[0036] In particular, it should be noted that the painting spray booth can be a closed painting operation space of a certain painting workshop on the painting production line. The painting workshop can be equipped with one or more painting spray booths, and the painting spray booth can be arranged with painting equipment and air supply system. The painting equipment can be a spray gun or a nozzle, and the spray gun or nozzle is clamped by a manipulator or other equipment. The spray gun or nozzle sprays the paint in atomized form to perform surface painting on the workpiece to be worked in the painting spray booth. The painting spray booth is usually equipped with an air inlet and an air outlet. The air supply system is used to blow the paint mist formed in the painting spray booth along the air inlet to the air outlet, and the paint mist filter on the paint mist filtering mechanism 100 installed at the air outlet is used to capture and filter the paint particles. Among them, the paint mist filtering mechanism 100 can be connected to an external negative pressure suction source, such as an air compressor, etc., and use the negative pressure suction source to generate negative pressure suction force at the air flow outlet 12 of the paint mist filter mechanism 100, so as to filter and extract the air flow carrying paint mist, and discharge the filtered clean gas into the external environment. The operating environment of the paint mist filtering mechanism 100 is briefly described here and will not be elaborated on in detail.

[0037] according to Figure 1 and Figure 7As shown, the paint mist filtering mechanism 100 includes a frame 1 , a paint mist filter 2 , a clamping assembly 3 and a control assembly 4 .

[0038] An air inlet 11 connected to the air outlet of the paint spraying room is arranged on one side of the frame 1, and an air outlet 12 connected to a negative pressure suction source is arranged on the other side of the frame 1. The frame 1 defines an accommodating space 13 between the air inlet 11 and the air outlet 12.

[0039] The paint mist filter 2 is detachably arranged in the accommodating space 13, and the airflow inlet 11, the paint mist filter 2 and the airflow outlet 12 are sequentially connected. The paint mist filter 2 can be a dry carton paint mist filter, an environmentally friendly paper paint mist filter, etc., without specific limitation.

[0040] Since the airflow inlet 11 is arranged at the lower side of the frame 1 and the airflow outlet 12 is arranged at the upper side of the frame 1, the gas carrying paint mist can be sucked into the paint mist filter 2 from the lower airflow inlet 11 to be captured and filtered, and the filtered gas is discharged to the external environment from the upper airflow outlet 12. This bottom-in and top-out design, on the one hand, can make heavier paint particles settle into the paint mist filter 2 under the action of gravity, thereby improving the filtration efficiency of the paint mist filter 2. On the other hand, since the paint mist particles gradually settle during the rising process, the bottom-in and top-out airflow channel design can reduce the risk of clogging of the paint mist filter 2 and extend the service life of the paint mist filter. And because the airflow is from bottom to top, the paint mist particles have more opportunities to contact the filter medium during the rising process, which increases the chance of filtration, thereby improving the overall filtration efficiency.

[0041] In some embodiments, the height positions of the air flow inlet 11 and the air flow outlet 12 may also be designed to be in from the top and out from the bottom or to be substantially at the same height, without any specific limitation.

[0042] The clamping assembly 3 is disposed on the frame 1 and is used to clamp the paint mist filter 2 installed in the accommodating space 13 .

[0043] according to Figure 1 and Figure 2 As shown, the clamping assembly 3 includes a pair of lower clamping modules 31 arranged at opposite sides of the lower portion of the frame 1 and used to clamp the lower side of the paint mist filter 2 , and an upper clamping module 32 arranged at the upper portion of the frame 1 and used to clamp the upper side of the paint mist filter 2 .

[0044] The lower clamping module 31 includes a lower clamping cylinder 311 installed on the frame 1, a clamping link 312 hinged on the frame 1 and one end of which is drivingly connected to the lower clamping cylinder 311, and a lower clamping portion 313 connected to the other end of the clamping link 312. The lower clamping portion 313 can be a threaded rod with a rubber-coated head, or a pin or a threaded column, without specific limitation.

[0045] When the lower clamping module 31 is working, the lower clamping cylinder 311 drives one end of the clamping link 312 to rotate around the hinge point of the frame 1, so that the other end drives the lower clamping part 313 to swing, thereby realizing the clamping action or the loosening action.

[0046] according to Figure 3 and Figure 4 As shown, the upper clamping module 32 includes an upper clamping cylinder 321 installed on the frame 1, and an upper clamping part 322 hinged on the frame 1 and one end of which is drivingly connected to the upper clamping cylinder 321. The upper clamping part 322 can be a baffle or a plurality of baffles arranged at intervals connected by a connecting rod, which is not specifically limited.

[0047] When the upper clamping module 32 is working, the upper clamping cylinder 321 drives the upper clamping part 322 to rotate around the hinge point of the frame 1, so that the upper clamping part 322 turns over to achieve a clamping action or a loosening action.

[0048] according to Figure 7 As shown, the control component 4 includes a controller 41 and a detection module 42 arranged on the frame 1 and used to detect the installation position of the paint mist filter 2. The controller 41 is signal-connected with the detection module 42. The controller 41 is configured to control the clamping component 3 to clamp the paint mist filter 2 based on the detection signal of the detection module 42.

[0049] When the paint mist filter 2 is installed to the designated installation position in the accommodating space 13 of the frame 1, the detection module 42 sends the detected position signal of the paint mist filter 2 to the controller 41. After receiving the detection signal feedback from the detection module 42, the controller 41 sends a control signal to the upper clamping cylinder 321 and the lower clamping cylinder 311 of the clamping assembly 3, controlling the upper clamping cylinder 321 to drive the upper clamping part 322 and controlling the lower clamping cylinder 311 to drive the lower clamping part 313 to clamp the paint mist filter 2 together.

[0050] It should be noted that the controller 41 may be a PLC controller or an industrial computer; the detection module 42 may be a position sensor, a photoelectric sensor, a proximity switch, etc., without any specific limitation.

[0051] In some embodiments, the detection module 42 may not be provided to detect the installation position of the paint mist filter 2 on the rack 1. The paint mist filter 2 can be manually pushed to the specified position in the accommodating space 13 of the rack 1. An operation panel or a control knob may be provided on the rack 1. The controller 41 is connected to the operation panel or the control knob signal. The control signal is sent to the controller 41 by operating the control panel or the control knob, so that the controller 41 sends a control signal to the clamping assembly 3 to control the clamping assembly 3 to clamp or release the paint mist filter 2. There is no specific limitation.

[0052] In particular, it should be noted that, after the paint mist filter 2 has been in service for a period of time, paint particles are easily attached and deposited inside the paint mist filter 2, causing the paint mist filter 2 to be blocked and reducing the filtering effect. When the paint mist filter 2 is blocked, a large pressure is usually generated upstream of the paint mist filter 2, that is, at the air flow inlet 11. This makes the pressure at the air flow inlet 11 significantly greater than the pressure at the air flow outlet 12, and there is an obvious pressure difference between the air flow inlet 11 and the air flow outlet 12. Therefore, it is possible to determine whether the paint mist filter 2 has reached the replacement condition by monitoring the pressure difference between the air flow inlet 11 and the air flow outlet 12.

[0053] In order to solve the above problems, the control component 4 includes a first pressure sensor 43 connected to the controller 41 signal, a first pressure sensor 43 and a second pressure sensor 44, wherein the first pressure sensor 43 is arranged at the air flow inlet 11, and the second pressure sensor 44 is arranged at the air flow outlet 12, and a pressure difference threshold is preset inside the controller 41. The controller 41 is configured to control the clamping component 3 to release the paint mist filter 2 when the difference between the detection value of the first pressure sensor 43 and the detection value of the second pressure sensor 44 is greater than or equal to the pressure difference threshold.

[0054] In order to conveniently remind maintenance personnel to replace the paint mist filter 2 in time, the control component 4 further includes an alarm module 45 which is connected to the controller 41 signal and is used to send an alarm signal to the outside. The controller 41 is configured to control the alarm module 45 to send an alarm signal to the outside when the difference between the detection value of the first pressure sensor 43 and the detection value of the second pressure sensor 44 is greater than or equal to the pressure difference threshold.

[0055] When the paint mist filter 2 reaches the replacement condition, the controller 41 receives the detection signal fed back from the first pressure sensor 43 and the second pressure sensor 44, calculates the difference between the detection values ​​of the first and second pressure sensors and compares the difference with the pressure difference threshold preset therein, and when the difference between the detection value of the first pressure sensor 43 and the detection value of the second pressure sensor 44 is greater than or equal to the pressure difference threshold, the controller 41 sends a control signal to the alarm module 45, controls the alarm module 45 to send an alarm signal to the outside, and at the same time, the controller 41 sends a control signal to the upper clamping cylinder 321 and the lower clamping cylinder 311 of the clamping assembly 3, controls the clamping assembly 3 to release the paint mist filter 2 from the installation position of the rack 1. The maintenance personnel can rush to the site in time to replace the paint mist filter 2 according to the alarm signal of the alarm module 45.

[0056] The alarm module 45 may be a vibration sensor or a buzzer, and there is no specific limitation.

[0057] In particular, it should be noted that since the traditional installation method of the paint mist filter is usually to manually lock the bolts to install and fix the paint mist filter 2 at the air outlet of the paint spray booth, the installation position of the paint mist filter 2 at the air outlet of the paint spray booth is not accurate enough, resulting in poor sealing of the paint mist filter 2 and easy leakage.

[0058] according to Figure 1 and Figure 2 As shown, in order to solve the above-mentioned problem, so that the maintenance personnel can push the paint mist filter 2 into the accommodating space 13 of the rack 1, so that the paint mist filter 2 can be accurately guided and positioned to the designated installation position, the paint mist filtering mechanism 100 includes a guide component 5 for guiding the paint mist filter 2 into the accommodating space 13.

[0059] The guide assembly 5 includes a pair of support rails 51 arranged along opposite sides of the frame 1 and extending into the accommodating space 13 , and a plurality of guide wheels 52 rotatably disposed on the support rails 51 .

[0060] In order to make the force on the paint mist filter 2 on the support rail 51 more uniform, a plurality of guide wheels 52 are arranged at intervals along the extension direction of the support rail 51 .

[0061] In order to facilitate pushing the paint mist filter 2 from the ground onto the support rail 51 , a ramp portion 53 extending downwardly and obliquely to a horizontal plane is provided on one end of the support rail 51 away from the frame 1 .

[0062] Combination Figure 5 and Figure 6 As shown, the working principle of the paint mist filtering mechanism is realized as follows:

[0063] When installing the paint mist filter 2: the maintenance personnel can push the paint mist filter 2 along the support guide rail 51 to the designated installation position in the accommodating space 13 manually or with the help of a stacker. When the paint mist filter 2 moves to the designated installation position, the detection module 42 can send the detection signal of the paint mist filter 2 to the controller 41. The controller 41 controls the lower clamping module 31 and the upper clamping module 32 of the clamping assembly 3 to clamp the paint mist filter 2 together based on the detection signal of the detection module 42.

[0064] When the paint mist filter 2 is disassembled and replaced: When the paint mist filter 2 is blocked due to long-term service and reaches the replacement condition, the first pressure sensor 43 and the second pressure sensor 44 can send the pressure detection values ​​at the air flow inlet 11 and the air flow outlet 12 to the controller 41. The controller 41 compares the difference between the detection values ​​of the first pressure sensor 43 and the second pressure sensor 44 with the internal preset pressure difference threshold. When the difference between the detection values ​​of the first pressure sensor 43 and the second pressure sensor 44 is greater than or equal to the pressure difference threshold, the controller 41 can send a control signal to the alarm module 45, thereby controlling the alarm module 45 to send an alarm signal to the outside. The controller 41 also sends a control signal to the lower clamping module 31 and the upper clamping module 32 of the clamping assembly 3, controlling the lower clamping module 31 and the upper clamping module 32 of the clamping assembly 3 to loosen the paint mist filter 2 together. At this time, the maintenance personnel can manually or with the help of a stacker pull the paint mist filter 2 out of the accommodating space 13 along the support guide rail 51.

[0065] Compared with the prior art, the paint mist filter 2 can be quickly and automatically installed by only manually or using handling equipment to push the paint mist filter 2 into the accommodating space 13, which makes the operation simpler and more efficient.

[0066] The technical scope of the present invention is not limited to the contents in the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A paint mist filtering mechanism for a paint spraying room, arranged at the air outlet of the paint spraying room, characterized in that: The paint mist filtering mechanism comprises: A frame (1), one side of which is provided with an air flow inlet (11) connected to the air outlet, and the other side of which is provided with an air flow outlet (12) connected to a negative pressure suction source, wherein the frame (1) defines an accommodation space (13) between the air flow inlet (11) and the air flow outlet (12); The paint mist filter (2) is detachably arranged in the accommodating space (13), and the airflow inlet (11), the paint mist filter (2) and the airflow outlet (12) are sequentially connected by airflow; A clamping assembly (3), arranged on the frame (1) and used for clamping the paint mist filter (2); A control component (4) comprises a controller (41), wherein the controller (41) is connected to the clamping component (3) by signal and is used to control the clamping component (3) to clamp or release the paint mist filter (2).

2. The paint mist filtering mechanism according to claim 1, characterized in that: The control component (4) comprises a first pressure sensor (43) and a second pressure sensor which are connected to the controller (41) by signal, wherein the first pressure sensor (43) is arranged at the air flow inlet (11), and the second pressure sensor (44) is arranged at the air flow outlet (12). A pressure difference threshold is preset in the controller (41), and the controller (41) is configured to control the clamping component (3) to release the paint mist filter (2) when the difference between the detection value of the first pressure sensor (43) and the detection value of the second pressure sensor (44) is greater than or equal to the pressure difference threshold.

3. The paint mist filtering mechanism according to claim 2, characterized in that: The control component (4) comprises an alarm module (45) connected to the controller (41) by signal and used for externally sending an alarm signal. The controller (41) is configured to control the alarm module (45) to send an alarm signal externally when the difference between the detection value of the first pressure sensor (43) and the detection value of the second pressure sensor (44) is greater than or equal to a pressure difference threshold.

4. The paint mist filtering mechanism according to claim 1, characterized in that: The paint mist filtering mechanism comprises a guide assembly (5) for guiding the paint mist filter (2) into the accommodating space (13).

5. The paint mist filtering mechanism according to claim 4, characterized in that: The guide assembly (5) comprises a pair of support rails (51) arranged along opposite sides of the frame (1) and extending into the accommodating space (13), and a plurality of guide wheels (52) rotatably disposed on the support rails (51).

6. The paint mist filtering mechanism according to claim 5, characterized in that: The plurality of guide wheels (52) are arranged at intervals along the extension direction of the support guide rail (51).

7. The paint mist filtering mechanism according to claim 5, characterized in that: A ramp portion (53) extending downwardly and obliquely to a horizontal plane is provided on one end of the support guide rail (51) away from the frame (1).

8. The paint mist filtering mechanism according to claim 1, characterized in that: The clamping assembly (3) comprises a pair of lower clamping modules (31) arranged at opposite sides of the lower part of the frame (1) and used for clamping the lower side of the paint mist filter (2), and an upper clamping module (32) arranged at the upper part of the frame (1) and used for clamping the upper side of the paint mist filter (2).

9. The paint mist filtering mechanism according to claim 8, characterized in that: The lower clamping module (31) comprises a lower clamping cylinder (311) mounted on a frame (1), a clamping connecting rod (312) hinged on the frame (1) and having one end drivingly connected to the lower clamping cylinder (311), and a lower clamping portion (313) connected to the other end of the clamping connecting rod (312).

10. The paint mist filtering mechanism according to claim 8, characterized in that: The upper clamping module (32) comprises an upper clamping cylinder (321) mounted on the frame (1), and an upper clamping portion (322) hinged on the frame (1) and having one end drivingly connected to the upper clamping cylinder (321).

Images