Powder conveying device

Abstract

The utility model relates to the technical field of spraying equipment, and provides a powder conveying device which comprises a conveying container, a first valve, a second valve, a positive and negative pressure generating module and a control module. Wherein the conveying container is provided with an input port and an output port; the first valve is connected with the input port; the second valve is connected with the output port; the positive and negative pressure generation module is connected with the conveying container; the control module controls the states of the first valve, the second valve and the positive and negative pressure generation module. When the first valve is opened, the second valve is closed, the positive and negative pressure generation module is in a negative pressure state, and powder enters the conveying container; when the first valve is closed, the second valve is opened, the positive and negative pressure generating module is in a positive pressure state, and powder is output through the output port. According to the powder conveying device, the first valve, the second valve and the positive and negative pressure generating module are controlled through the control module, so that the conveying container sucks powder under negative pressure and presses out the powder under positive pressure, the conveying distance and efficiency of the powder are improved, and powder sputtering is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying equipment, in particular to a powder conveying device. Background Art

[0002] Spraying refers to the process of applying a coating to the surface of an object by dispersing the spray into uniform and fine droplets through a spray gun or a disc atomizer of the spraying equipment with the help of pressure or centrifugal force.

[0003] Powder spraying is the process of using powder spraying equipment to spray paint onto the surface of the workpiece. The powder will be adsorbed on the surface of the workpiece to form a powdery coating.

[0004] When spraying powder, it is generally necessary to use a powder conveying device to convey the powder.

[0005] However, in the related art, when powder is transported, the transport efficiency of the powder is low, the distance is short, and the powder is easily splashed. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a powder conveying device to solve at least one of the above technical defects in the prior art, so as to improve the conveying efficiency and conveying distance of the powder and prevent powder splashing.

[0007] In order to achieve the purpose of the utility model, the utility model provides a powder conveying device, which comprises:

[0008] A conveying container having an input port and an output port;

[0009] A first valve connected to the input port;

[0010] a second valve connected to the output port;

[0011] A positive and negative pressure generating module connected to the conveying container;

[0012] a control module, connected to the first valve, the second valve and the positive and negative pressure generating module respectively, and adapted to control the switch states of the first valve and the second valve, and the positive and negative pressure states of the positive and negative pressure generating module;

[0013] When the first valve is opened, the second valve is closed, and the positive and negative pressure generating module is in a negative pressure state, so that the powder enters the conveying container from the input port;

[0014] When the first valve is closed, the second valve is opened, and the positive and negative pressure generating module is in a positive pressure state, so that the powder in the conveying container is output through the output port.

[0015] Preferably, the first valve is a first extrusion valve, and the second valve is a second extrusion valve.

[0016] Preferably, a fluidizing pipe is provided in the conveying container, and the fluidizing pipe is communicated with the input port and the output port respectively.

[0017] Preferably, the control module comprises a main input terminal, a pressure regulating module and a main output terminal which are connected in sequence;

[0018] The total input end is connected to external compressed air, and the total output end is connected to the first extrusion valve and the second extrusion valve respectively.

[0019] Preferably, the pressure regulating module comprises a pressure gauge.

[0020] Preferably, the control module further comprises a control mainboard and a solenoid valve module, the control mainboard is electrically connected to the solenoid valve module, and the solenoid valve module is connected to the pressure regulating module;

[0021] The solenoid valve module is connected to the first extrusion valve, the second extrusion valve and the positive and negative pressure generating module respectively through the pressure regulating module to control the switching states of the first extrusion valve and the second extrusion valve, and the positive and negative pressure states of the positive and negative pressure generating module.

[0022] Preferably, the control main board includes operating elements.

[0023] Preferably, the control module also includes a signal and power module for supplying power to the control mainboard and the solenoid valve module and feeding back relevant control signals.

[0024] Preferably, the conveying container includes a first conveying container and a second conveying container which are arranged in parallel.

[0025] Preferably, a sealing ring is provided at the connection between the first extrusion valve and the input port, and at the connection between the second extrusion valve and the output port.

[0026] The beneficial effects of the utility model are as follows: the powder conveying device provided by the utility model is provided with a conveying container having an input port and an output port, and a first valve is provided at the input port, a second valve is provided at the output port, and a positive and negative pressure generating module is provided on the conveying container; a control module is used to control the switching states of the first valve and the second valve, and the positive and negative pressure states of the positive and negative pressure generating module, so that the conveying container can form a negative pressure state to inhale external powder, and the conveying container can form a positive pressure state to press out the powder in the container, so as to complete the conveying of the powder; when the powder is conveyed, since the powder is conveyed in the conveying container under vacuum conditions (i.e., alternation of negative and positive pressure states), the conveying distance of the powder can be made longer and the conveying efficiency higher, and since the powder is in the conveying container, powder splashing can also be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other purposes, features and advantages of the present invention will become clearer through a more specific description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals indicate the same parts in all the accompanying drawings, and the accompanying drawings are not deliberately scaled to the actual size, but the focus is on illustrating the main purpose of the present invention.

[0028] Figure 1 A schematic diagram of the overall structure of a powder conveying device provided in an embodiment of the utility model;

[0029] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0030] Figure 3 for Figure 1 A top view of

[0031] Figure 4 for Figure 1 Rear view of

[0032] Figure 5 for Figure 1 Left view of

[0033] Figure 6 A cross-sectional view of a conveying container of a powder conveying device provided in an embodiment of the utility model.

[0034] In the figure:

[0035] 100, transport container; 110, input port; 120, output port; 130, fluidizing tube; 140, first transport container; 150, second transport container;

[0036] 200, first valve;

[0037] 300, second valve;

[0038] 400, positive and negative pressure generating module;

[0039] 500, control module; 510, main input terminal; 520, pressure regulating module; 521, pressure gauge; 530, main output terminal; 540, control main board; 541, operating element; 550, solenoid valve module; 560, signal and power supply module. DETAILED DESCRIPTION

[0040] In order to facilitate the understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the relevant drawings.

[0041] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention pertains. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0043] Combine the following Figures 1 to 6 It should be understood that the following description is only an illustrative embodiment of the present invention and does not constitute any limitation to the present invention.

[0044] See also Figures 1 to 6 An embodiment of the utility model provides a powder conveying device, which includes a conveying container 100, a first valve 200, a second valve 300, a positive and negative pressure generating module 400 and a control module 500.

[0045] The transport container 100 is provided with an input port 110 and an output port 120 , and the powder can enter the transport container 100 from the input port 110 and then be output from the output port 120 .

[0046] The first valve 200 is connected to the input port 110 , and can limit the powder from entering the delivery container 100 through the input port 110 .

[0047] The second valve 300 is connected to the output port 120 , and can limit the powder in the delivery container 100 from being output from the output port 120 .

[0048] The positive and negative pressure generating module 400 is connected to the conveying container 100 and can perform negative pressure operation on the conveying container 100 to put the conveying container 100 in a negative pressure state; it can also perform positive pressure operation on the conveying container 100 to put the conveying container 100 in a positive pressure state.

[0049] The control module 500 is connected to the first valve 200 , the second valve 300 and the positive and negative pressure generating module 400 , respectively, and can control the switch states of the first valve 200 and the second valve 300 , and the positive and negative pressure states of the positive and negative pressure generating module 400 .

[0050] When the first valve 200 is opened and the second valve 300 is closed, the positive and negative pressure generating module 400 is in a negative pressure state, the conveying container 100 is in a negative pressure state (vacuum), and the powder is pressed into the conveying container 100, that is, the powder can enter the conveying container 100 from the input port.

[0051] When the first valve 200 is closed, the second valve 300 is opened, the positive and negative pressure generating module 400 is in a positive pressure state, the inside of the conveying container 100 is in a positive pressure state (pressurized), and the powder in the conveying container 100 is pressed out of the conveying container 100 by pressure, that is, the powder in the conveying container 100 is output through the output port 120.

[0052] The control module 500 controls the states of the first valve 200 , the second valve 300 and the positive and negative pressure generating module 400 , so that the powder can be transported in the transport container.

[0053] It can be understood that the powder conveying device provided by the utility model is provided with a conveying container 100 having an input port 110 and an output port 120, and a first valve 200 is provided at the input port 110, a second valve 300 is provided at the output port 120, and a positive and negative pressure generating module is provided on the conveying container 100; a control module 500 is used to control the switching state of the first valve 200 and the second valve 300, and the positive and negative pressure state of the positive and negative pressure generating module 400, so that the conveying container 100 can form a negative pressure state to absorb external powder, and the conveying container 100 can form a positive pressure state to press out the powder in the container to complete the conveying of the powder; when the powder is conveyed, since the powder is conveyed in the conveying container 100 under vacuum conditions (i.e., alternation of negative and positive pressure states), the conveying distance of the powder can be made longer and the conveying efficiency can be higher, and since the powder is in the conveying container 100, powder sputtering can also be prevented.

[0054] In a specific embodiment, the first valve 200 may be a first extrusion valve, and the second valve 300 may be a second extrusion valve. The input port and the output port may be closed by passing pressurized air into the first extrusion valve and the second extrusion valve, and the input port and the output port may be opened by removing the pressure, so as to flexibly adjust the switch state of the input port and the output port. The first extrusion valve and the second extrusion valve may be made of rubber to ensure that the powder can be tightly closed.

[0055] In some embodiments of the present invention, a fluidizing tube 130 is disposed in the conveying container 100, and the fluidizing tube 130 is respectively connected to the input port 110 and the output port 120. The fluidizing tube 130 can isolate the powder and can also absorb the powder by negative pressure and convey the powder by positive pressure, thereby further improving the conveying efficiency of the powder conveying device.

[0056] In some embodiments of the present invention, the control module 500 includes a main input terminal 510 , a pressure regulating module 520 and a main output terminal 530 .

[0057] Among them, the main input end 510, the pressure regulating module 520 and the main output end 530 are connected in sequence.

[0058] The main input end 510 is connected to external compressed air, and the main output end 530 is connected to the first extrusion valve and the second extrusion valve respectively.

[0059] After the pressurized air enters from the main input end 510, it is regulated by the pressure regulating module 520 and then input to the first extrusion valve and the second extrusion valve from the main output end 530. The pressure regulating module 520 can control the switching state of the first extrusion valve and the second extrusion valve by adjusting the pressure value input to the first extrusion valve and the second extrusion valve, making it more convenient to adjust the switching state of the first extrusion valve and the second extrusion valve.

[0060] Of course, in order to visualize the pressure regulation and facilitate human operation and management, the pressure regulation module 520 is provided with a related pressure gauge 521 .

[0061] Furthermore, in some embodiments of the present invention, the control module 500 also includes a control mainboard 540 and a solenoid valve module 550 . The control mainboard 540 is electrically connected to the solenoid valve module 550 , and the solenoid valve module 550 is connected to the pressure regulating module 520 .

[0062] The solenoid valve module 550 is respectively connected to the first squeeze valve, the second squeeze valve and the positive and negative pressure generating module 400 through the pressure regulating module 520 to control the switch state of the first squeeze valve and the second squeeze valve, and the positive and negative pressure state of the positive and negative pressure generating module 400. The positive and negative pressure generating module 400 includes a vacuum generator. When the vacuum generator is working, the conveying container 100 can be evacuated, and the conveying container 100 is in a negative pressure state; after the vacuum generator stops evacuating, gas can be input into the conveying container 100, and the conveying container 100 is in a positive pressure state.

[0063] The control main board 540 can be set outside the powder conveying device. The control main board 540 can be manually operated to control the adjustment state of the pressure adjustment module 520 through the solenoid valve module 550, and finally the switching state of the first extrusion valve and the second extrusion valve can be adjusted, which is convenient and quick.

[0064] Of course, the control main board also includes an operating element 541, and a related control program can be preset on the control main board 540 to adjust the switch state of the first extrusion valve and the second extrusion valve to improve the intelligence level of the powder conveying device.

[0065] In some embodiments of the present invention, the control module 500 further includes a signal and power module 560 for supplying power to the control mainboard 540 and the solenoid valve module 550 and feeding back relevant control signals to alert operators and improve safety.

[0066] In order to further improve the powder conveying efficiency, in some embodiments of the present invention, the conveying container 100 includes a first conveying container 140 and a second conveying container 150, and the first conveying container 140 and the second conveying container 150 are arranged in parallel.

[0067] When the input port of the first conveying container 140 is opened, the first conveying container 140 is in a negative pressure state, the output port of the first conveying container 140 is closed, and the powder enters the first conveying container 140 from the input port of the first conveying container 140; at this time, the input port of the second conveying container 150 is also opened, the second conveying container 150 is also in a negative pressure state, the output port of the second conveying container 150 is also closed, and the powder can also enter the second conveying container 150 from the input port of the second conveying container 150.

[0068] When the input port of the first conveying container 140 is closed, the first conveying container 140 is in a positive pressure state, the output port of the first conveying container 140 is opened, and the powder is output from the output port of the first conveying container 140; at this time, the input port of the second conveying container 150 is also closed, the second conveying container 150 is also in a positive pressure state, the output port of the second conveying container 150 is also opened, and the powder can also be output from the output port of the second conveying container 150. The two conveying containers 100 can improve the conveying efficiency of the powder.

[0069] Of course, the conveying states of the first conveying container 140 and the second conveying container 150 can also be operated alternately. For example, when the input port of the first conveying container 140 is opened, the first conveying container 140 is in a negative pressure state, the output port of the first conveying container 140 is closed, and the powder enters the first conveying container 140 from the input port of the first conveying container 140; at this time, the input port of the second conveying container 150 is closed, the second conveying container 150 is also in a positive pressure state, the output port of the second conveying container 150 is opened, and the powder can be output from the output port of the second conveying container 150.

[0070] When the input port of the first conveying container 140 is closed, the first conveying container 140 is in a positive pressure state, the output port of the first conveying container 140 is opened, and the powder is output from the output port of the first conveying container 140; at this time, the input port of the second conveying container 150 is opened, the second conveying container 150 is also in a negative pressure state, the input port of the second conveying container 150 is closed, and the powder can enter the second conveying container 150. The two conveying containers 100 can be used alternately to improve the conveying efficiency of the powder.

[0071] In some embodiments of the present invention, sealing rings are provided at the connection between the first extrusion valve and the input port 110 , and at the connection between the second extrusion valve and the output port 120 , so as to improve the sealing performance and prevent the powder from splashing out to the outside.

[0072] In this specification, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0073] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "some embodiments", "other embodiments" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0074] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A powder conveying device, characterized in that: include: A conveying container having an input port and an output port; A first valve connected to the input port; a second valve connected to the output port; A positive and negative pressure generating module connected to the conveying container; a control module, connected to the first valve, the second valve and the positive and negative pressure generating module respectively, and adapted to control the switch states of the first valve and the second valve, and the positive and negative pressure states of the positive and negative pressure generating module; When the first valve is opened, the second valve is closed, and the positive and negative pressure generating module is in a negative pressure state, so that the powder enters the conveying container from the input port; When the first valve is closed, the second valve is opened, and the positive and negative pressure generating module is in a positive pressure state, so that the powder in the conveying container is output through the output port.

2. The powder conveying device according to claim 1, characterized in that: The first valve is a first squeeze valve, and the second valve is a second squeeze valve.

3. The powder conveying device according to claim 2, characterized in that: A fluidizing pipe is arranged in the conveying container, and the fluidizing pipe is communicated with the input port and the output port respectively.

4. The powder conveying device according to claim 3, characterized in that: The control module includes a main input terminal, a pressure regulating module and a main output terminal connected in sequence; The total input end is connected to external compressed air, and the total output end is connected to the first extrusion valve and the second extrusion valve respectively.

5. The powder conveying device according to claim 4, characterized in that: The pressure regulating module includes a pressure gauge.

6. The powder conveying device according to claim 4, characterized in that: The control module further comprises a control mainboard and a solenoid valve module, wherein the control mainboard is electrically connected to the solenoid valve module, and the solenoid valve module is connected to the pressure regulating module; The solenoid valve module is connected to the first extrusion valve, the second extrusion valve and the positive and negative pressure generating module respectively through the pressure regulating module to control the switching states of the first extrusion valve and the second extrusion valve, and the positive and negative pressure states of the positive and negative pressure generating module.

7. The powder conveying device according to claim 6, characterized in that: The control main board includes operating elements.

8. The powder conveying device according to claim 6, characterized in that: The control module also includes a signal and power module for supplying power to the control mainboard and the solenoid valve module and feeding back relevant control signals.

9. The powder conveying device according to any one of claims 1 to 8, characterized in that: The conveying container includes a first conveying container and a second conveying container which are arranged in parallel.

10. The powder conveying device according to claim 2, characterized in that: A sealing ring is provided at the connection between the first extrusion valve and the input port, and at the connection between the second extrusion valve and the output port.

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