Powder supply center room convenient to clean

Abstract

The utility model relates to the technical field of powder electrostatic spraying, in particular to a powder supply center room convenient to clean, which comprises a powder supply center main shell, a powder box and an automatic cleaning unit, a powder supply operation chamber is arranged in the powder supply center main shell, and the powder box is arranged in the powder supply operation chamber. The powder box is used for spraying powder to a workpiece placed in the powder supply operation chamber, the automatic cleaning unit is provided with a purging module and a negative pressure adsorption module, the purging module inputs gas into the powder supply operation chamber and purges the powder supply operation chamber, and the adsorption module is communicated with the powder supply operation chamber. And the exhaust pipe is used for exhausting gas and suspended powder in the powder supply operation chamber. Through the automatic cleaning unit, the powder coating adhered to the powder supply operation chamber can be automatically cleaned and discharged, the powder supply operation chamber does not need to be opened during operation, and compared with manual cleaning of the powder coating, the cleaning efficiency is higher and the cleaning is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder electrostatic spraying, and specifically relates to a powder supply center room which is easy to clean. Background Art

[0002] CN218690587U discloses an electrostatic spray powder feeding mechanism, which includes a powder feeding center base; a movable assembly is arranged on the upper surface of the powder feeding center base, and the movable assembly includes a rod 1, which is arranged on the upper surface of the powder feeding center base, a tube body, one end of which is arranged on the upper surface of the rod 1, a rod 2, one end of which is connected to the other end of the tube body by a bearing, a frame 1, which is arranged on the outer side wall of the rod 2, and a powder loading assembly is arranged on the upper surface of the frame 1, and the powder loading assembly includes a frame 4, which is arranged on the upper surface of the frame 1, and the frame 4 is not connected to the frame 1, and a frame 3, which is arranged on the inner side wall of the frame 3; the design of these components allows workers to easily add powder to the powder barrel, so that the powder will not overflow when the workers add powder, reduce the harm of dust to the human body, and facilitate the workers to operate. The powder loading assembly includes a frame 4 and a frame 3, wherein the outer side wall of the frame 3 is provided with a through hole and a slide rail; it is convenient for workers to pour powder into the powder barrel, thereby improving work efficiency. The baffle assembly includes a plate body 2 and a block, wherein the block is located below the inner wall of the frame body 3; the function is to prevent powder from overflowing and ensure the safety of the working environment of workers.

[0003] However, during use, a lot of powder coating will inevitably adhere to the inner cavity of the powder supply mechanism. If the powder coating is cleaned manually, the efficiency is low and it is troublesome. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model, on the one hand, provides an easy-to-clean powder supply center room including a main shell of a powder supply center, a powder box and an automatic cleaning unit. A powder supply operation room is arranged in the main shell of the powder supply center, and the powder box is arranged in the powder supply operation room. The powder box is used to spray powder on the workpiece placed in the powder supply operation room. The automatic cleaning unit is provided with a purge module and a negative pressure adsorption module. The purge module inputs gas into the powder supply operation room and purges it. The adsorption module is connected to the powder supply operation room and is used to discharge the gas and suspended powder in the powder supply operation room.

[0005] Preferably, the adsorption module is a recovery air duct, the input end of the recovery air duct is communicated with the powder supply operation chamber, and is used to recover the powder in the powder supply operation chamber. The recovery air duct is also provided with a butterfly valve.

[0006] Preferably, the powder box is also provided with a recycled powder input terminal and a new powder input terminal, and the recycled powder input terminal and the new powder input terminal respectively input recycled powder and new powder into the powder box. The easy-to-clean powder supply center room also includes a spray recovery unit, and the recovery unit recovers the powder in the powder supply operation room to form recycled powder.

[0007] Preferably, the powder supply center room which is easy to clean further comprises a ratio adjustment unit, wherein the ratio adjustment unit is connected to the powder box, and the ratio adjustment unit is used to adjust the ratio of recycled powder and new powder input into the powder box.

[0008] Preferably, the recycled powder input end and the new powder input end are connected to the recycled powder control valve group and the new powder control valve group respectively, and a powder level detector is also provided in the powder box, and the powder level detector is signal-connected to the recycled powder control valve group and the new powder control valve group respectively.

[0009] Preferably, the recovery unit is provided with a recovery air duct, and a plurality of air duct outlet holes are provided on the inner wall of the powder supply operation chamber, the air duct outlet holes are connected with the input end of the recovery air duct, and a guide plate is provided corresponding to the air duct outlet holes, and the guide plate is spaced apart from the air duct outlet holes.

[0010] Preferably, the easy-to-clean powder supply center room also includes a powder pump, which is arranged on the main shell of the powder supply center, the output end of the powder pump is connected to the new powder input end, the input end of the powder pump is connected to a powder suction pipe, and the input end of the powder suction pipe is retractably arranged in the powder supply operation room.

[0011] Preferably, the purge module is arranged on the powder box, and the purge module can input gas into the powder box to discharge the powder in the powder box out of the powder supply operation chamber; or

[0012] The purge module is communicated with the powder supply operation chamber, a box opening and a box cover are arranged on the top of the powder box, the box opening is communicated with the inner cavity of the box, and the box cover can be opened and closed on the box opening.

[0013] Preferably, the powder box is also connected to an exhaust valve assembly; the exhaust valve assembly is used to input gas into the powder box to discharge the powder in the powder box; or the exhaust valve assembly is used to extract gas from the powder box to put the powder box in a negative pressure.

[0014] Preferably, a gas exhaust body module is also provided on the top of the main housing of the powder supply center, and the gas exhaust body module is connected to the powder supply operation room and is used to exhaust the gas in the powder supply operation room;

[0015] The powder supply center room which is easy to clean comprises a control air circuit module, a recovery powder control valve group, a new powder control valve group, a purge module and an exhaust valve assembly, wherein the control air circuit module is respectively connected to the control air circuit module, the recovery powder control valve group, the new powder control valve group, the purge module and the exhaust valve assembly;

[0016] A control panel, an isolating switch and a fluidization control pressure gauge are provided on the top front side of the main shell of the powder supply center. The isolating switch is used to emergency power off the powder supply center room which is easy to clean. The fluidization control pressure gauge is used to display and control the air pressure of the control air circuit module, the recovery powder control valve group, the new powder control valve group, the purge module and the exhaust valve assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 is a rear view of the first embodiment;

[0019] Figure 2 is a front view of the first embodiment;

[0020] Figure 3 is a perspective view of the first embodiment;

[0021] Figure 4 is a rear view of the second embodiment;

[0022] Figure 5 is a front view of a second embodiment;

[0023] Figure 6 is a perspective view of a second embodiment;

[0024] Figure 7 It is a top view of the second embodiment.

[0025] Figure symbols: main shell 100 of powder supply center, square powder barrel 101, powder suction pipe 102, powder box 103, air exhaust body module 104, powder recovery control valve group 105, powder supply operation room 106, recovery powder input end 107, new powder input end 108, new powder control valve group 110, purge module 111, emptying valve assembly 112, powder level detector 113, control air path module 114, recovery air duct 115, butterfly valve 116, guide plate 120, fluidization control pressure gauge 121, control panel 122, isolation switch 124, powder pump 125. DETAILED DESCRIPTION

[0026] 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.

[0027] 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.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art. 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 related listed items.

[0029] On the one hand, the utility model provides a powder supply center room that is easy to clean, including a main shell body 100 of the powder supply center, a powder box 103 and an automatic cleaning unit. A powder supply operation room 106 is arranged in the main shell body of the powder supply center, and the powder box is arranged in the powder supply operation room 106. The powder box 103 is used for spraying powder on the workpiece placed in the powder supply operation room 106. The automatic cleaning unit is provided with a purge module and a negative pressure adsorption module. The purge module inputs gas into the powder supply operation room and purges it. The adsorption module is connected to the powder supply operation room 106, and is used to discharge the gas and suspended powder in the powder supply operation room 106.

[0030] The utility model can automatically clean and discharge the powder coating adhered to the powder supply operation chamber 106 through the automatic cleaning unit, and the powder supply operation chamber 106 does not need to be opened during operation, so that the powder supply operation chamber 106 can be operated without opening the sealed door. Compared with manual cleaning of powder coating, the cleaning efficiency is higher and more convenient.

[0031] On the other hand, a powder spraying room with a recycling function is provided. The powder supply center room which is easy to clean includes a powder supply center main shell 100, a powder box 103 and a recycling unit. A powder supply operation room 106 is arranged in the powder supply center main shell 100, and the powder box 103 is arranged in the powder supply operation room 106. The powder box 103 is used to spray powder on the workpiece placed in the powder supply operation room 106. A recycled powder input terminal 107 and a new powder input terminal 108 are also arranged on the powder box 103. The recycled powder input terminal 107 and the new powder input terminal 108 respectively input recycled powder and new powder into the powder box 103, and the recycling unit recycles the powder in the powder supply operation room 106 to form recycled powder.

[0032] New powder refers to unused powder coatings, which can be purchased from manufacturers. Recycled powder refers to powder coatings that are recycled after electrostatic spraying. Recycled powder can be powder coatings that are suspended or dropped in the powder supply operation chamber 106 during spraying, and are formed after recycling; recycled powder can also be formed by the surplus used in the powder box 103. The new powder input end 108 is generally connected to a new powder storage or a new powder conveying device, and new powder is input into the powder box 103 through the new powder storage or the new powder conveying device. The recycled powder input end 107 can be connected to the output of the recycling unit, or connected to other recycled powder storage devices. The recycled powder input end 107 receives the recycled powder input by the recycling unit or receives the recycled powder input by the recycled powder storage device, and then the recycled powder input end 107 inputs the received recycled powder into the powder box 103. On the one hand, the utility model can recycle electrostatic spraying to avoid the waste of expensive powder coatings. On the other hand, the powder box 103 receives the recycled powder and the new powder, and then electrostatically sprays the workpiece, so that the recycled powder and the new powder can be reasonably used to ensure the spraying quality of the workpiece while greatly reducing the cost.

[0033] In a preferred embodiment, the powder supply center room that is easy to clean also includes a ratio adjustment unit, which is connected to the powder box 103 and is used to adjust the ratio of recycled powder and new powder input into the powder box 103.

[0034] The powder box 103 stores the recycled powder and the new powder in proportion, and then sprays the workpiece. When the recycled powder is used to spray the workpiece, the spraying quality is slightly worse than that of the new powder. The proportion adjustment unit can adjust the recycled powder and the new powder according to the different requirements of the spraying quality of different workpieces, so as to achieve a better spraying effect and a lower cost solution.

[0035] In a preferred embodiment, the recycled powder input terminal 107 and the new powder input terminal 108 are connected to the recycled powder control valve group 105 and the new powder control valve group 110 respectively. A powder level detector 113 is also provided in the powder box 103, and the powder level detector 113 is signal-connected to the recycled powder control valve group 105 and the new powder control valve group 110 respectively.

[0036] The recycled powder control valve group 105 and the new powder control valve group 110 respectively control the input and closing of recycled powder and new powder to the powder box 103. The specific structure of the powder level detector 113 is a prior art and will not be described here. The powder level detector 113 can monitor the powder level of the powder coating in the powder box 103 to adjust the amount of recycled powder and new powder added. When the powder box 103 is filled with 10 powder levels, for example, the powder levels of the recycled powder and the new powder need to be adjusted to 1:1. First, open the new powder control valve group 110 and add new powder to the powder box 103. After the powder level detector 113 detects that 5 powder levels of new powder have been added, close the new powder control valve group 110, open the recycled powder control valve, and continue to add recycled powder to the powder box 103 until the powder level detector 113 detects that 10 powder levels have been added to the powder box 103. Since the recycled powder is added from the 6th powder level, when it is added to 10 powder levels, the recycled powder is actually 5 powder levels, so the powder level of the recycled powder and the new powder is 1:1. If the ratio of the powder level of recycled powder to that of new powder is 3:7, new powder can be added first until the powder level detector 113 detects that 7 powder levels of powder coating are added to the powder box 103, and then recycled powder can be added until the powder level detector 113 detects that 10 powder levels of powder coating are added to the powder box 103. The recycled powder control valve group 105, the new powder control valve group 110 and the powder level detector 113 realize the corresponding equipment of the adjustment function with low cost, long service life and easy maintenance.

[0037] Of course, in order to achieve the ratio adjustment of recycled powder and new powder, the ratio adjustment unit can not only be implemented by using the above-mentioned recycled powder control valve group 105, the new powder control valve group 110 and the powder level detector 113, but also the recycled powder control valve group 105 and the new powder control valve group 110 are respectively provided with a recycled powder flow meter and a new powder flow meter. For example, the recycled powder flow meter controls the flow of recycled powder input into the powder box 103, and the new powder flow meter controls the flow of new powder input into the powder box 103, thereby achieving ratio adjustment.

[0038] For further information, please refer to Figure 1 and Figure 2 The recovery powder control valve group 105 and the new powder control valve group 110 are arranged on the rear side wall of the powder spraying room (with Figure 2 The direction is used as a reference), and is respectively connected to the recovered powder input end 107 and the new powder input end 108 at the top of the powder box 103 through a powder conveying pipe (not shown).

[0039] In a preferred embodiment, the recovery unit is provided with a recovery duct 115 , the input end of which is connected to the powder supply operation chamber 106 for recovering the powder in the powder supply operation chamber 106 , and a butterfly valve 116 is also provided on the recovery duct 115 .

[0040] The recovery air duct 115 adopts negative pressure, so that the air and the suspended powder coating in the powder supply operation room 106 are sucked out together, and the output end of the recovery air duct 115 is filtered to form recovered powder, and then it can be input into the powder box 103 again through the recovery powder control valve group 105 and the recovery powder input end 107, and the powder supply box 103 is recycled again. The output end of the recovery air duct 115 can be connected to the cyclone automatic recovery device, and the collected recovered powder is transported to the cyclone automatic recovery device, so that it can process and store the recovered powder for standby use. The cyclone automatic recovery device is a prior art and is not within the scope of protection, so it will not be repeated here. The recovery air duct 115 is recycled in a simple structure and is easy to maintain. The negative pressure adsorption module is set as the recovery air duct 115, which can realize the cleaning of the powder supply operation room 106 and can also recover the powder.

[0041] In a preferred embodiment, a plurality of air duct outlet holes are provided on the inner wall of the powder supply operation chamber 106, the air duct outlet holes are connected to the input end of the recovery air duct 115, and a guide plate 120 is provided corresponding to the air duct outlet holes, and the guide plate 120 is spaced apart from the air duct outlet holes.

[0042] The air outlet of the air duct (not shown) is used to suck out the powder suspended in the powder supply operation chamber 106 and transport the sucked out powder to the recovery air duct 115, so as to filter and process the recovered powder. The air outlet of the air duct and the guide plate 120 are spaced 1cm-3cm apart. Figure 2 The embodiment in which three guide plates 120 are respectively arranged on the rear side wall of the powder supply operation room 106 is shown in the figure. The guide plates 120 are spaced 1cm-3cm from the rear side wall of the powder supply operation room 106. The rear side wall of the powder supply operation room 106 behind the three guide plates 120 is respectively provided with air duct outlet holes penetrating therethrough. The guide plates 120 increase the adsorption of the recovery air duct 115 on the powder supply operation room 106, and can spread the adsorption effect in a larger space in the powder supply operation room 106; it avoids the negative pressure being concentrated in a small area of ​​the air duct outlet hole when adsorption is solely dependent on the air duct outlet hole. On the other hand, the guide plates 120 block the air duct outlet hole with larger adsorbed objects.

[0043] In a preferred embodiment, the powder supply center room that is easy to clean also includes a powder pump 125, which is arranged on the main shell 100 of the powder supply center. The output end of the powder pump 125 is connected to the new powder input end 108, and the input end of the powder pump 125 is connected to the powder suction pipe 102. The input end of the powder suction pipe 102 is retractably arranged in the powder supply operation room 106.

[0044] The input end of the powder pump 125 is connected to the new powder input end 108 through a delivery pipe. When a different or new powder coating needs to be replaced, the powder coating can be placed in the square powder barrel 101, and then the powder suction tube 102 is extended into the square powder barrel 101, and the powder pump 125 is started to pump the powder coating into the powder box 103. By adding and replacing new powder in the powder supply operation room 106, it is convenient to operate and provide a relatively sealed environment. Of course, in some embodiments, the input end of the powder pump 125 can be connected to a new powder storage device.

[0045] In a preferred embodiment, the powder box 103 is further provided with a purge module 111, and the purge module 111 can input gas into the powder box 103 to discharge the powder in the powder box 103; or

[0046] A box opening and a box cover are arranged on the top of the powder box 103. The box opening is communicated with the inner cavity of the box, and the box cover can be opened and closed on the box opening.

[0047] The above includes two cleaning solutions for the inner cavity of the powder box 103. The second method is to purge the module 111 (please refer to Figure 1 to Figure 2 ). The purge module 111 includes a purge control valve and a high-pressure gas input device. The high-pressure gas input device, the purge control valve device and the inner cavity of the powder box 103 are connected in sequence. The high-pressure gas input device blows gas to discharge the powder attached to the inner cavity of the powder box 103. Further, a discharge valve is provided on the powder box to discharge the above powder. The purge module 111 is cleaned automatically. The purge module 111 discharges gas and powder into the powder supply operation chamber 106 side by side. The gas flow further purges the powder in the powder supply operation chamber 106 for cleaning, and then is discharged and recovered through the adsorption module (i.e., the recovery air duct 115). Multiple purge modules 111 can be provided, and a part of the purge modules 111 are further on the powder supply operation chamber 106 to directly purge the powder adhered to the powder supply operation chamber 106. The second method is the box opening and the box cover (please refer to Figures 4 to 6 ), which is generally suitable for a large-capacity powder box 103, is convenient for manual operation, and can be carried out after opening the box cover. The box opening is a wide opening, exposing the inner cavity of the box.

[0048] In a preferred embodiment, the powder box 103 is also connected to an exhaust valve assembly 112; the exhaust valve assembly 112 is used to input gas into the powder box 103 to discharge the powder in the powder box 103; or the exhaust valve assembly 112 is used to extract gas from the powder box 103 to put the powder box 103 under negative pressure.

[0049] On the one hand, the drain valve assembly 112 can quickly pump out the remaining powder in the powder box 103 after use. On the other hand, when the powder box 103 is maintained, such as when the box cover is opened, the powder box 103 is placed under negative pressure to ensure that the powder stored in the inner cavity of the powder box 103 is not easy to float or overflow.

[0050] In a preferred embodiment, a discharge valve is provided on the powder box 103 to discharge the powder therein into the powder supply operation chamber 106 . The powder supply operation chamber 106 is also connected to a recovery air duct 115 , which is used to recover the powder in the powder supply operation chamber 106 .

[0051] When cleaning the powder box 103 , the recovery air duct 115 is kept at a negative pressure so that the powder floating in the powder supply operation chamber 106 can be adsorbed into the recovery air duct 115 for recycling.

[0052] In a preferred embodiment, a gas exhaust body module 104 is further disposed on the top of the powder supply center main housing 100 . The gas exhaust body module 104 is connected to the powder supply operation chamber 106 and is used to exhaust the gas in the powder supply operation chamber 106 .

[0053] In a preferred embodiment, the powder supply center room which is easy to clean includes a control air circuit module 114, a recovery powder control valve group 105, a new powder control valve group 110, a purge module 111 and an exhaust valve assembly 112, and the control air circuit module 114 is respectively connected to the control air circuit module 114, the recovery powder control valve group 105, the new powder control valve group 110, the purge module 111 and the exhaust valve assembly 112.

[0054] The gas control module 114 controls the five devices to input gas into or extract gas from the powder box 103 , and also supplies gas to or extracts gas from the five devices.

[0055] In a preferred embodiment, a control panel 122, an isolating switch 124 and a fluidizing control pressure gauge 121 are provided on the top front side of the main shell 100 of the powder supply center. The isolating switch 124 is used to emergency power off the powder supply center room which is easy to clean. The fluidizing control pressure gauge 121 is used to display and control the air pressure of the control air circuit module 114, the recovery powder control valve group 105, the new powder control valve group 110, the purge module 111 and the drain valve assembly 112.

[0056] In the present application, 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”, and “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”, and “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.

[0057] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "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.

[0058] 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 supply center room that is easy to clean, characterized in that: The powder supply center room that is easy to clean includes a main shell of the powder supply center, a powder box and an automatic cleaning unit. A powder supply operation room is arranged in the main shell of the powder supply center. The powder box is arranged in the powder supply operation room. The powder box is used to spray powder on the workpiece placed in the powder supply operation room. The automatic cleaning unit is provided with a purge module and a negative pressure adsorption module. The purge module inputs gas into the powder supply operation room and purges it. The adsorption module is connected to the powder supply operation room and is used to discharge the gas and suspended powder in the powder supply operation room.

2. The easy-to-clean powder supply center room according to claim 1, characterized in that: The adsorption module is a recovery air duct, the input end of which is communicated with the powder supply operation chamber and is used to recover the powder in the powder supply operation chamber. A butterfly valve is also provided on the recovery air duct.

3. The easy-to-clean powder supply center room according to claim 1, characterized in that: The powder box is also provided with a recycled powder input end and a new powder input end, and the recycled powder input end and the new powder input end respectively input recycled powder and new powder into the powder box. The easy-to-clean powder supply center room also includes a spray recovery unit, and the recovery unit recovers the powder in the powder supply operation room to form recycled powder.

4. The easy-to-clean powder supply center room according to claim 3, characterized in that: The powder supply center room that is easy to clean also includes a ratio adjustment unit, which is connected to the powder box and is used to adjust the ratio of recycled powder and new powder input into the powder box.

5. The easy-to-clean powder supply center room as claimed in claim 3, characterized in that: The recycled powder input end and the new powder input end are connected to the recycled powder control valve group and the new powder control valve group respectively. A powder level detector is also arranged in the powder box. The powder level detector is connected to the recycled powder control valve group and the new powder control valve group by signal respectively.

6. The easy-to-clean powder supply center room as claimed in claim 3, characterized in that: The recovery unit is provided with a recovery air duct, and a plurality of air duct outlet holes are provided on the inner wall of the powder supply operation chamber. The air duct outlet holes are connected with the input end of the recovery air duct, and a guide plate is provided corresponding to the air duct outlet holes, and the guide plate is spaced apart from the air duct outlet holes.

7. The easy-to-clean powder supply center room as claimed in claim 3, characterized in that: The powder supply center room that is easy to clean also includes a powder pump, which is arranged on the main shell of the powder supply center. The output end of the powder pump is connected to the new powder input end. The input end of the powder pump is connected to a powder suction pipe, and the input end of the powder suction pipe is telescopically arranged in the powder supply operation room.

8. The easy-to-clean powder supply center room according to claim 1, characterized in that: The purge module is disposed on the powder box, and the purge module can input gas into the powder box to discharge the powder in the powder box out of the powder supply operation room; or The purge module is communicated with the powder supply operation chamber, a box opening and a box cover are arranged on the top of the powder box, the box opening is communicated with the inner cavity of the box, and the box cover can be opened and closed on the box opening.

9. The easy-to-clean powder supply center room according to claim 8, characterized in that: The powder box is also connected to an exhaust valve assembly; the exhaust valve assembly is used to input gas into the powder box to discharge the powder in the powder box; or the exhaust valve assembly is used to extract gas from the powder box to put the powder box in a negative pressure.

10. The easy-to-clean powder supply center room according to claim 1, characterized in that: The top of the main housing of the powder supply center is also provided with an air exhaust body module, which is connected to the powder supply operation room and is used to exhaust the gas in the powder supply operation room; The powder supply center room which is easy to clean comprises a control air circuit module, a recovery powder control valve group, a new powder control valve group, a purge module and an exhaust valve assembly, wherein the control air circuit module is respectively connected to the control air circuit module, the recovery powder control valve group, the new powder control valve group, the purge module and the exhaust valve assembly; A control panel, an isolating switch and a fluidization control pressure gauge are provided on the top front side of the main shell of the powder supply center. The isolating switch is used to emergency power off the powder supply center room which is easy to clean. The fluidization control pressure gauge is used to display and control the air pressure of the control air circuit module, the recovery powder control valve group, the new powder control valve group, the purge module and the exhaust valve assembly.

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