Anti-clogging powder pump

Abstract

The present application discloses an anti-clogging powder pump, which belongs to the technical field of powder pumps. The powder pump comprises a powder tube, one end of which is fixedly provided with a docking joint, and the other end of which is detachably connected with an inner sleeve, one side of which is connected with a powder air input pipe and an auxiliary air input pipe with adjustable air volume, which are detachable from the powder tube, a filter is fixedly provided inside the powder air input pipe and the auxiliary air input pipe, an annular air passage connected with the auxiliary air input pipe is reserved on the outer wall of the powder tube, and the powder tube comprises a vacuum cavity, which is connected with the powder air input pipe, so as to realize the technical effect of facilitating the adjustment of the air mixture flow and avoiding the blockage of the powder pump.

Description

Technical Field

[0001] The present application relates to the technical field of powder pumps, and more specifically, to an anti-clogging powder pump. Background Art

[0002] A powder pump is a device similar to a spray gun that uses pressure difference to mix gas and powder for spraying. A powder pump can be used in industry to transport any organic powder coating from a barrel to a spray gun.

[0003] The existing powder pump directly pressurizes the powder tube through the injector nozzle to push the dry powder from the powder coating hopper along the powder tube. During the spraying process, the air mixture of the powder coating cannot be adjusted. As a result, when the powder content is high, the powder cannot be discharged quickly and accumulates in the powder tube, which easily causes the powder pump to be blocked.

[0004] In view of this, we propose an anti-clogging powder pump. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The purpose of the present application is to provide an anti-clogging powder pump, which solves the technical problems in the above-mentioned background technology and achieves the technical effect of facilitating the adjustment of the flow rate of the air mixture and avoiding the clogging of the powder pump.

[0007] 2. Technical solution

[0008] The technical solution of the present application provides an anti-clogging powder pump, comprising: a powder tube, one end of which is fixedly installed with a docking joint, and the other end of which is detachably connected with an inner sleeve, one side of the powder tube is connected with a powder air input pipe and an auxiliary air input pipe with adjustable air volume, the powder air input pipe and the auxiliary air input pipe are detachable from the powder tube, filters are fixedly installed in the powder air input pipe and the auxiliary air input pipe, an annular airway connected to the auxiliary air input pipe is reserved on the outer wall of the powder tube, and the powder tube comprises a vacuum cavity, and the vacuum cavity is connected to the powder air input pipe.

[0009] By adopting the above technical solution, the butt joint is inserted into the powder coating hopper, and the powder air input pipe directly inputs the powder air into the vacuum chamber by adjusting the air volume of the powder air input pipe and the auxiliary air input pipe. The air of the auxiliary air input pipe passes through the annular airway and then flows out through the end of the inner sleeve. A secondary mixing is performed in the spray gun connecting pipe to adjust the air mixture flowing out of the gun tip to avoid blockage caused by high powder concentration and coating quality. The filter screen is used to avoid the problem of blockage of the annular airway and the vacuum chamber caused by the inhalation of large particles. The inner sleeve is threadedly connected to the spray gun connecting pipe, and the inner sleeve is threadedly connected to the powder pipe to facilitate the disassembly, assembly and replacement of the inner sleeve.

[0010] As an optional solution of the technical solution of the present application document, the vacuum cavity includes a paint inlet that penetrates the docking joint, and an injector nozzle is fixed in the vacuum cavity.

[0011] By adopting the above technical solution, the outlet end of the paint inlet is parallel to the nozzle end of the injector nozzle, the injector nozzle inhales air containing powder through the powder air inlet pipe, and makes the areas on both sides of the nozzle end in a negative pressure state, so that the joint inhales the powder in the powder paint hopper and enters the vacuum chamber for mixing.

[0012] As an optional solution of the technical solution of this application document, the docking sleeve is provided with a plurality of sealing rings.

[0013] By adopting the above technical solution, the sealing performance between the butt joint and the powder coating hopper is improved through a plurality of sealing rings.

[0014] As an optional solution of the technical solution of this application document, the inner casing is threadedly connected to the powder pipe.

[0015] By adopting the technical solution, the inner sleeve is connected to the powder hose through the thread, so that the inner sleeve can be easily disassembled, assembled and replaced.

[0016] As an optional solution of the technical solution of the present application document, the vacuum chamber also includes a groove inlet with a trumpet-shaped structure, and the paint inlet and the injector nozzle are placed at the groove inlet.

[0017] By adopting the above technical solution, the trumpet-shaped groove inlet is used to facilitate the coating to be mixed at the groove inlet before entering the main cavity of the vacuum cavity.

[0018] As an optional solution of the technical solution of the present application document, the vacuum chamber is in the shape of a tapered tube with a small diameter at the inner end and a large diameter at the outer end.

[0019] By adopting the above technical solution, the conical tubular structure of the vacuum cavity is arranged to facilitate the smooth diffusion of the mixture through the vacuum cavity of the conical tube group, thereby avoiding the accumulation and blockage of the straight tube powder.

[0020] As an optional solution of the technical solution of the present application document, an air volume regulating valve is fixedly connected between the powder air input pipe and the powder hose, and between the auxiliary air input pipe and the powder hose.

[0021] By adopting the above technical solution, the air intake volume of the powder air input pipe and the auxiliary air input pipe can be adjusted through the air volume regulating valve.

[0022] 3. Beneficial effects

[0023] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0024] 1. The present application inserts the docking joint into the powder coating hopper, and adjusts the air volume of the powder air input pipe and the auxiliary air input pipe. The powder air input pipe directly inputs the powder air into the vacuum chamber. The air of the auxiliary air input pipe passes through the annular air duct and then flows out through the end of the inner sleeve. A secondary mixing is performed in the spray gun connecting pipe to adjust the air mixture flowing out of the gun tip to avoid blockage caused by high powder concentration and coating quality. A filter is used to avoid the problem of blockage of the annular air duct and the vacuum chamber caused by the inhalation of large particles. The inner sleeve is threadedly connected to the spray gun connecting pipe, and the inner sleeve is threadedly connected to the powder pipe to facilitate disassembly, assembly and replacement of the inner sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall cross-sectional structure of an anti-clogging powder pump disclosed in a preferred embodiment of the present application;

[0026] Figure 2 This is a schematic diagram of the overall structure of an anti-clogging powder pump disclosed in a preferred embodiment of the present application;

[0027] Explanation of the numbers in the figure: 1. Powder hose; 101. Paint inlet; 102. Annular air duct; 2. Butt joint; 201. Sealing ring; 3. Powder paint hopper; 4. Inner sleeve; 5. Powder air input pipe; 6. Auxiliary air input pipe; 7. Injector nozzle; 8. Vacuum chamber; 801. Groove inlet; 9. Air volume regulating valve; 10. Spray gun connecting pipe; 11. Filter. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings.

[0029] A clogging-resistant powder pump comprises: a powder tube 1, one end of which is fixedly provided with a docking joint 2, the other end of which is detachably connected with an inner sleeve 4, one side of which is connected with a powder air input pipe 5 and an auxiliary air input pipe 6 with adjustable air volume, the powder air input pipe 5 and the auxiliary air input pipe 6 being detachable from the powder tube 1, a filter screen 11 being fixedly provided inside the powder air input pipe 5 and the auxiliary air input pipe 6, an annular airway 102 communicating with the auxiliary air input pipe 6 being reserved on the outer wall of the powder tube 1, and the powder tube 1 comprising a vacuum cavity 8, which is communicated with the powder air input pipe 5.

[0030] Reference Figure 1 and Figure 2, insert the docking joint 2 into the powder coating hopper 3, and adjust the air volume of the powder air input pipe 5 and the auxiliary air input pipe 6. The powder air input pipe 5 directly inputs the powder air into the vacuum chamber 8. The air of the auxiliary air input pipe 6 passes through the annular airway 102 and then flows out through the end of the inner sleeve 4. A secondary mixing is performed in the spray gun connecting pipe 10 to adjust the air mixture flowing out of the gun tip to avoid blockage caused by high powder concentration and coating quality, and pass through the filter 11 to avoid the problem of blockage of the annular airway 102 and the vacuum chamber 8 caused by the inhalation of large particles. The inner sleeve 4 is threadedly connected to the spray gun connecting pipe 10, and the inner sleeve 4 is threadedly connected to the powder hose 1 to facilitate the disassembly, assembly and replacement of the inner sleeve 4.

[0031] The vacuum chamber 8 comprises a coating material inlet 101 which is in communication with the butt joint 2 , and a fuel injector nozzle 7 is fixed in the vacuum chamber 8 .

[0032] Reference Figure 1 The outlet end of the coating inlet 101 is parallel to the nozzle end of the injector nozzle 7. The injector nozzle 7 inhales air containing powder through the powder air inlet pipe 5, and makes the areas on both sides of the nozzle end in a negative pressure state, so that the joint 2 inhales the powder in the powder coating hopper 3 and enters the vacuum chamber 8 for mixing.

[0033] The two butt joints are provided with a plurality of sealing rings 201 .

[0034] Reference Figure 1 and Figure 2 , multiple sealing rings 201 are used to improve the sealing performance between the joint 2 and the powder coating hopper 3.

[0035] The inner sleeve 4 is threadedly connected to the powder hose 1 .

[0036] Reference Figure 1 The inner sleeve 4 is connected to the powder hose 1 through a threaded connection, so as to facilitate the disassembly, assembly and replacement of the inner sleeve 4.

[0037] The vacuum chamber 8 further comprises a groove inlet 801 in a bell-mouth-shaped structure, and the paint inlet 101 and the injector nozzle 7 are disposed at the groove inlet 801 .

[0038] Reference Figure 1 , through the trumpet-shaped groove inlet 801, it is convenient for the paint to be mixed at the groove inlet 801 and then enter the main cavity of the vacuum cavity 8.

[0039] The vacuum chamber 8 is in the shape of a tapered tube with a small inner diameter and a large outer diameter.

[0040] Reference Figure 1 The conical tubular structure of the vacuum cavity 8 is set to facilitate the smooth diffusion of the mixture through the vacuum cavity 8 of the conical tube group, avoiding the accumulation and blockage of the straight tube powder.

[0041] An air volume regulating valve 9 is fixedly connected between the powder air input pipe 5 and the powder hose 1 , and between the auxiliary air input pipe 6 and the powder hose 1 .

[0042] Reference Figure 1 , through the air volume regulating valve 9, so as to adjust the air intake volume of the powder air input pipe 5 and the auxiliary air input pipe 6.

[0043] Working principle: insert the docking joint 2 into the powder coating hopper 3, then thread the inner sleeve 4 to the spray gun connecting pipe 10, start the injector nozzle 7, so that the powder air input pipe 5 and the coating inlet 101 are in a negative pressure state, the powder air enters the groove inlet 801 through the powder air input pipe 5, and the powder coating is sucked into the groove inlet 801 through the coating inlet 101 for mixing, and then after passing through the vacuum chamber 8, it passes through the inner sleeve 4 and is sprayed out through the spray gun connecting pipe 10, so that the outlet end of the annular airway 102 is in a negative pressure state, and at this time, the air enters the spray gun connecting pipe 10 through the auxiliary air input pipe 6 for secondary mixing.

Claims

1. An anti-clogging powder pump, characterized in that: include: A powder hose (1), one end of which is fixedly provided with a docking joint (2), and the other end of which is detachably connected to an inner sleeve (4); one side of the powder hose (1) is connected to a powder air input pipe (5) and an auxiliary air input pipe (6) with adjustable air volume; the powder air input pipe (5) and the auxiliary air input pipe (6) are detachable from the powder hose (1); a filter screen (11) is fixedly provided inside the powder air input pipe (5) and the auxiliary air input pipe (6); an annular air passage (102) connected to the auxiliary air input pipe (6) is reserved on the outer wall of the powder hose (1); the powder hose (1) comprises a vacuum chamber (8), and the vacuum chamber (8) is connected to the powder air input pipe (5).

2. The anti-clogging powder pump according to claim 1, characterized in that: The vacuum cavity (8) comprises a coating material inlet (101) which is in communication with the docking head (2), and a fuel injector nozzle (7) is fixed in the vacuum cavity (8).

3. The anti-clogging powder pump according to claim 1, characterized in that: The butt joint (2) is sleeved with a plurality of sealing rings (201).

4. The anti-clogging powder pump according to claim 1, characterized in that: The inner sleeve (4) is threadedly connected to the powder hose (1).

5. The anti-clogging powder pump according to claim 2, characterized in that: The vacuum chamber (8) further comprises a groove inlet (801) having a bell-mouth-shaped structure, and the paint inlet (101) and the fuel injector nozzle (7) are disposed at the groove inlet (801).

6. The anti-clogging powder pump according to claim 1, characterized in that: The vacuum chamber (8) is in the shape of a tapered tube with a small diameter at the inner end and a large diameter at the outer end.

7. The anti-clogging powder pump according to claim 1, characterized in that: An air volume regulating valve (9) is fixedly connected between the powder air input pipe (5) and the powder hose (1), and between the auxiliary air input pipe (6) and the powder hose (1).

Images