Powder rotating cup

Abstract

The utility model relates to the technical field of spraying equipment, and provides a powder rotating cup, which is arranged on a spray gun and comprises a cup body, a first conveying channel and a second conveying channel, the cup head is detachably arranged on the cup body, and the cup head is provided with a containing groove; and the check block is arranged in the containing groove, an air outlet gap is formed between the check block and the containing groove, and the air outlet gap communicates with the first conveying channel. By means of the technical scheme, the problems that due to the fact that part of powder in a traditional powder rotary cup is away from an electrode tip and cannot be effectively electrified, the spraying efficiency is low, and powder is wasted are solved.

Description

Technical Field

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

[0002] The powder cup is a key equipment component used in powder spraying technology. It is mainly used to efficiently and evenly atomize and deposit powder coatings onto the target surface. Its working principle combines the centrifugal force generated by high-speed rotation and electrostatic spraying technology to achieve high-quality coating effects.

[0003] However, when the traditional powder rotary cup is working, since the electrode head is set on the circumference of the cup body, the powder can only be charged when passing through the electrode head when sprayed. Since the powder is relatively dispersed and the spraying speed is fast, some powder cannot be charged when sprayed because it is far away from the electrode head. During spraying, the uncharged powder cannot adhere to the target surface, resulting in waste of powder. Utility Model Content

[0004] The utility model provides a powder rotary cup, which solves the problem in the related art that part of the powder in the traditional powder rotary cup cannot be effectively charged because it is far away from the electrode head, resulting in low spraying efficiency and powder waste.

[0005] The technical solution of the utility model is as follows:

[0006] A powder bell, arranged on a spray gun, comprises:

[0007] A cup body having a mounting portion, wherein the cup body is arranged on the spray gun through the mounting portion, and the cup body has a first conveying channel;

[0008] A cup head, detachably arranged on the cup body, the cup head having a receiving groove;

[0009] A stopper is disposed in the accommodating groove, an air outlet gap is formed between the stopper and the accommodating groove, and the air outlet gap is communicated with the first conveying channel.

[0010] Preferably, the cup head comprises:

[0011] A cover body, wherein the receiving groove is arranged in the cover body, the cover body has a second conveying channel, and after the cup head is connected with the cup body, the first conveying channel is communicated with the second conveying channel;

[0012] The supporting platform is arranged in the containing groove, the supporting platform is provided with a connecting portion, and the stopper is arranged on the connecting portion.

[0013] Preferably, the accommodating groove is in a trumpet-mouth shape.

[0014] Preferably, the support platform is in a circular ring shape, and has a through hole in the middle of the support platform, and the first conveying channel is connected to the containing groove through the through hole.

[0015] Preferably, it also includes:

[0016] An electrostatic generator is disposed inside the cup body;

[0017] There are a plurality of electrode heads, and the plurality of electrode heads are arranged in the receiving groove at intervals, and the plurality of electrode heads are electrically connected to the electrostatic generator.

[0018] Preferably, the stopper is conical in shape, the stopper is matched with the accommodating groove, and the air outlet gap is formed between the side wall of the stopper and the inner wall of the accommodating groove.

[0019] Preferably, the stopper has a mounting hole, and further comprises:

[0020] A positioning adjustment rod is arranged in the mounting hole, the positioning adjustment rod passes through the mounting hole and is arranged on the connecting portion, and the positioning adjustment rod is used to adjust the width of the air outlet gap.

[0021] Preferably, the cup body comprises:

[0022] The feed mixing section has an air inlet and a feed inlet. A mixed gas chamber is arranged in the feed mixing section, and the mixed gas chamber is communicated with the first conveying channel.

[0023] Preferably, the cup body further comprises:

[0024] The power unit is arranged on the cup head, the cup head is arranged on the power unit, and the power unit drives the cup head to rotate.

[0025] The working principle and beneficial effects of the utility model are:

[0026] In the utility model, when the powder rotary cup is started, high-pressure air carries powder particles along the first conveying channel into the receiving groove of the cup head. The centrifugal force generated by the high-speed rotating cup head accelerates the powder particles and forces them to change their motion trajectory when approaching the block. In the air outlet gap, the powder particles rebound multiple times under the obstruction of the block. Each collision increases the chance of contact with the electrode located in the receiving groove, thereby greatly improving the overall charging efficiency of the powder. Under the action of the electrostatic field, the charged powder particles adhere to the target surface more evenly and effectively, significantly reducing the waste of uncharged powder and improving the quality and consistency of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0028] Figure 1 This is the front view of the powder spinning cup of the utility model;

[0029] Figure 2 This is a schematic diagram of the cup head structure of the utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the powder rotary cup of the utility model;

[0031] Figure 4 This is a schematic diagram of the internal structure of the powder rotary cup of the utility model;

[0032] Figure 5 This is a schematic diagram of the stopper structure of the utility model;

[0033] Figure 6 This is a schematic diagram of the cup body structure of the utility model.

[0034] In the figure: 1. cup body; 101. feed mixing part; 1011. air inlet; 1012. feed inlet; 102. power part; 103. mounting part; 104. first conveying channel; 2. cup head; 201. cover body; 202. containing groove; 203. connecting part; 204. supporting platform; 2041. through hole; 205. second conveying channel; 3. electrode head; 4. stopper; 401. mounting hole; 5. positioning adjustment rod; 6. air outlet gap. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0036] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0037] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0038] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0039] Reference Figure 1 to Figure 6 , which is the first embodiment of the utility model, proposes a powder rotary cup, which is arranged on a spray gun, including: a cup body 1, having a mounting portion 103, the cup body 1 is arranged on the spray gun through the mounting portion 103, and the cup body 1 has a first conveying channel 104; a cup head 2, which is detachably arranged on the cup body 1, and the cup head 2 has a receiving groove 202; a stopper 4, which is arranged in the receiving groove 202, and an air outlet gap 6 is formed between the stopper 4 and the receiving groove 202, and the air outlet gap 6 is connected to the first conveying channel 104.

[0040] In the above scheme, it is intended to solve the problem that part of the powder in the traditional powder rotary cup cannot be effectively charged because it is far away from the electrode head 3, resulting in low spraying efficiency and powder waste. A mounting portion 103 is provided on the cup body 1 for fixing it on the spray gun. A first conveying channel 104 is designed in the cup body 1, and the first conveying channel 104 ensures that the powder can flow smoothly to the spraying area. The cup head 2 is connected to the cup body 1 through a quick locking device to ensure sealing and facilitate replacement or cleaning. A block 4 is installed inside the receiving groove 202 of the cup head 2, and a certain size of air outlet gap 6 is left between the block 4 and the wall of the receiving groove 202 to ensure that when the powder and airflow pass through, the powder particles can repeatedly collide and change direction in this area.

[0041] Working principle: When the powder rotary cup is started, high-pressure air carries the powder particles along the first conveying channel 104 into the receiving groove 202 of the cup head 2. The centrifugal force generated by the high-speed rotating cup head 2 accelerates the powder particles and is forced to change the trajectory of movement when approaching the block 4. In the air outlet gap 6, the powder particles rebound multiple times under the obstruction of the block 4. Each collision increases the chance of contact with the electrode located in the receiving groove 202, thereby greatly improving the overall charging efficiency of the powder. Under the action of the electrostatic field, the charged powder particles adhere to the target surface more evenly and effectively, significantly reducing the waste of uncharged powder and improving the quality and consistency of the coating.

[0042] Through the design of the block 4, this embodiment can significantly improve the charging effect of the powder without changing the basic structure of the rotary cup, which is easy to operate and has low maintenance costs. The discharge of uncharged powder is reduced, the utilization rate of the spraying material is improved, and it is beneficial to environmental protection and cost control. The coating quality is improved, the uniformity and adhesion of the coating are ensured, and the requirements of high-precision spraying are met. The powder rotary cup of this embodiment realizes effective charging of the powder by adding a block 4 inside the cup head 2, overcoming the problems of uneven powder spraying and waste in the prior art.

[0043] Furthermore, the cup head 2 includes: a cover body 201, a receiving groove 202 is arranged in the cover body 201, the cover body 201 has a second conveying channel 205, after the cup head 2 is connected to the cup body 1, the first conveying channel 104 is connected to the second conveying channel 205; a support platform 204, which is arranged in the receiving groove 202, and has a connecting part 203 on the support platform 204, and a stopper 4 is arranged on the connecting part 203.

[0044] In the above scheme, the cover body 201 is the main component of the cup head 2, and a receiving groove 202 is designed inside it. The cover body 201 also integrates a second conveying channel 205, which is precisely connected with the first conveying channel 104 of the cup body 1 to ensure that the powder smoothly transitions between the two channels and is conveyed to the best charged area without hindrance. Support platform 204: Located at the bottom center of the receiving groove 202, the support platform 204 not only enhances the stability of the entire cup head 2 structure, but also has a connecting portion 203 arranged thereon. This design allows the stopper 4 to be more firmly installed on the support platform 204. The stopper 4 is installed through the connecting portion 203 on the support platform 204. Such a design allows the position of the stopper 4 to be fine-tuned according to actual needs, optimizes the rebound path of the powder, and further improves the uniformity and efficiency of the powder charging. The connecting portion 203 may adopt a threaded connection, a snap-on type or other quick adjustment mechanism, which is convenient for users to quickly adjust the position of the stopper 4 according to the powder type, particle size and spraying requirements to achieve the best spraying effect.

[0045] Workflow: The powder first enters the second conveying channel 205 of the cover body 201 through the first conveying channel 104. Driven by the high-speed airflow, the powder is accelerated and accurately guided to the receiving groove 202. Since the block 4 is installed on the connecting portion 203 of the support platform 204, the powder can more fully contact the electrode during repeated collisions with the block 4, and the charging efficiency is significantly improved. The design of the support platform 204 and the connecting portion 203 not only ensures the stable installation of the block 4, but also provides the user with the possibility of flexible adjustment to adapt to the spraying requirements under different working conditions, thereby improving the versatility and applicability of the equipment. In summary, this embodiment further improves the working efficiency and coating quality of the powder rotary cup by refining the design of the cup head 2 structure, especially introducing the support platform 204 and the optimized installation method of the block 4.

[0046] Furthermore, the receiving groove 202 is in a trumpet shape.

[0047] In the above scheme, the receiving groove 202 is no longer a simple straight cylinder, but is designed to be a trumpet shape that is wide at the top and narrow at the bottom. This design is narrow at the entrance of the first conveying channel 104 near the cup body 1, and gradually expands toward the outlet direction of the cup head 2. As the powder particles pass through the increasingly spacious receiving groove 202, the high-speed airflow can accelerate the powder more smoothly, and at the same time, the powder particles are better diffused in the expanded space, reducing mutual collision and blockage, and improving the uniformity of powder flow. Enhanced charging effect: The trumpet design helps to form a more uniform airflow field when the powder particles contact the block 4 and the electrode, so that more powder particles can obtain sufficient kinetic energy in the air outlet gap 6 for multiple effective collisions, so as to be fully charged in a wider range. Optimized atomization performance: As the caliber of the receiving groove 202 gradually expands, the powder particles can be quickly atomized in a more open space when leaving the cup head 2, forming a finer and more uniform particle cloud, which not only improves the fineness of the coating, but also significantly enhances the coverage and adhesion of the coating, and also facilitates the powder to be sprayed out under the action of centrifugal force.

[0048] Furthermore, the supporting platform 204 is in a circular ring shape, and has a through hole 2041 in the middle of the supporting platform 204 . The first conveying channel 104 is connected to the containing groove 202 via the through hole 2041 .

[0049] In the above scheme, the support platform 204 adopts a circular ring structure. This design not only ensures sufficient support strength, but also avoids obstruction to the powder flow path. A through hole 2041 is set in the center of the support platform 204. The first conveying channel 104 directly passes through the through hole 2041 and is connected to the inside of the receiving tank 202, ensuring the continuity and speed of the powder flow, thereby improving the powder transmission efficiency and atomization effect. The through hole 2041 is designed so that there is almost no resistance change when the airflow and powder particles pass through the support platform 204, maintaining the linear acceleration state of the airflow, helping the powder to reach a higher speed before entering the receiving tank 202, which is beneficial to subsequent uniform atomization and efficient charging. The efficiency and quality of the spraying operation are improved, and the stability and durability of the equipment are also improved.

[0050] Furthermore, it also includes: an electrostatic generator, which is arranged in the cup body 1; and a plurality of electrode heads 3, which are arranged in the receiving groove 202 at intervals, and the plurality of electrode heads 3 are electrically connected to the electrostatic generator.

[0051] In the above scheme, the electrostatic generator is cleverly integrated inside the cup body 1, which not only saves external space, but also simplifies the overall layout of the equipment, making the powder spinning cup more compact and efficient. The electrostatic generator provides the necessary energy source for charging the powder particles by generating a high-voltage electrostatic field. Unlike the traditional single electrode head 3, this embodiment arranges a plurality of electrode heads 3 at intervals in the receiving tank 202. These electrode heads 3 are evenly distributed on the powder flow path, ensuring that no matter where the powder particles are in the receiving tank 202, they can contact the electrode head 3 to obtain a charge. The interval setting strategy of the multiple electrode heads 3 effectively solves the problem that some powders in the traditional design cannot be effectively charged because they are too far away from the electrode, greatly improving the uniformity and efficiency of the powder charging. All electrode heads 3 are electrically connected to the electrostatic generator through conductive lines to ensure the stable transfer of charge. Under the combined action of high-speed rotation and airflow, when the powder particles pass through multiple electrode heads 3, almost every particle of powder can be effectively charged, greatly improving the powder adhesion rate and coating uniformity during the spraying process. Multi-point charge distribution makes the powder charging process more uniform, reduces the generation of uncharged powder, and thus reduces powder waste.

[0052] Furthermore, the stopper 4 is conical in shape, and is adapted to the receiving groove 202 , and an air outlet gap 6 is formed between the side wall of the stopper 4 and the inner wall of the receiving groove 202 .

[0053] In the above scheme, the block 4 is designed to be conical, with its bottom surface adapted to the size of the receiving groove 202 and the top facing the direction of powder flow. The conical design can not only ensure that a stable air outlet gap 6 is formed between the block 4 and the inner wall of the receiving groove 202, but also effectively guide and control the rebound direction and number of powder particles. The side wall of the conical block 4 fits tightly with the inner wall of the receiving groove 202, but a carefully calculated air outlet gap 6 is retained between the two. This design allows the high-speed airflow to produce a vortex effect when passing through the gap, causing the powder particles to experience more collisions and tumbling when passing through the block 4, increasing the chance of contact with the electrode head 3, thereby improving the charging efficiency. The inclined surface of the conical block 4 guides the powder particles to move in the air outlet gap 6, increasing the movement path length of the powder particles and the chance of contact with the electrode head 3, ensuring a more uniform and efficient charging process. Due to the optimization of the shape of the block 4, the powder can rebound at a wider scattering angle after hitting the block 4, making the charge distribution more uniform, thereby improving the uniformity and coverage of the coating. The conical design can also reduce the kinetic energy loss of the powder during the rebound process, avoiding the difficulty of effectively charging the powder due to excessive deceleration, further improving the powder utilization and spraying efficiency.

[0054] Furthermore, the block 4 has a mounting hole 401 , and also includes: a positioning adjustment rod 5 , which is arranged in the mounting hole 401 , and the positioning adjustment rod 5 passes through the mounting hole 401 and is arranged on the connecting portion 203 , and the positioning adjustment rod 5 is used to adjust the width of the air outlet gap 6 .

[0055] In the above scheme, one or more mounting holes 401 are preset on each conical stopper 4, and these mounting holes 401 are precisely aligned with the connecting part 203. Through the mounting hole 401, the positioning adjustment rod 5 is set through and closely cooperates with the connecting part 203, forming a core mechanism for adjusting the width of the air outlet gap 6. The positioning adjustment rod 5 can not only fix the position of the stopper 4, but more importantly, by rotating or linearly moving the adjustment rod, the distance between the stopper 4 and the inner wall of the receiving groove 202, that is, the width of the air outlet gap 6, can be fine-tuned. This adjustment ability is crucial for optimizing the movement trajectory, collision frequency and charging effect of the powder. The user can adjust the positioning adjustment rod 5 to accurately control the air outlet gap 6 according to different powder characteristics (such as particle size, density), spraying requirements or working environment, so as to achieve the best charging state and spraying uniformity. A more flexible adjustment mechanism means that in different application scenarios, the powder rotary cup can adapt more efficiently, reduce debugging time and material waste, and improve the overall spraying efficiency and coating quality. Available with manual knobs, screw adjustments or graduated slide mechanisms, adjustments can be made intuitively and quickly without the need for complex tools or expertise.

[0056] Furthermore, the cup body 1 includes: a feed mixing portion 101 having an air inlet 1011 and a feed port 1012 , a mixed air chamber is provided in the feed mixing portion, and the mixed air chamber is communicated with the first conveying channel 104 .

[0057] In the above scheme, the feed mixing part 101 of the cup body 1 integrates the air inlet 1011 and the feed port 1012. The air inlet 1011 is connected to the external air source, and the feed port 1012 is used to introduce powder coating. The mixing air chamber is a closed space, and its function is to make the incoming powder and airflow mix quickly and evenly in a limited space under the drive of high-pressure airflow. The mixing air chamber is connected to the first conveying channel 104 through a precise channel structure to ensure that the mixed powder-airflow mixture can smoothly transition to the next process, that is, the conveying process to the containing tank 202. Working principle and advantages: When high-pressure gas enters the mixing air chamber from the air inlet 1011, a strong vortex will be formed. After the powder is introduced from the feed port 1012, it is quickly dispersed and evenly wrapped in the airflow under the action of the vortex. This process significantly improves the mixing efficiency of powder and gas.

[0058] Furthermore, the cup body 1 further comprises: a power unit 102, which is arranged on the cup head 2, and the cup head 2 is arranged on the power unit 102, and the power unit 102 drives the cup head 2 to rotate. The power unit 102 is a motor or a turbine, which drives the cup body 1 to rotate centrifugally at a high speed.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A powder bell, arranged on a spray gun, characterized in that: include: A cup body (1) having a mounting portion (103), wherein the cup body (1) is arranged on the spray gun via the mounting portion (103), and the cup body (1) has a first conveying channel (104); A cup head (2) is detachably arranged on the cup body (1), and the cup head (2) has a receiving groove (202); a stopper (4) disposed in the containing groove (202), an air outlet gap (6) being formed between the stopper (4) and the containing groove (202), the air outlet gap (6) being in communication with the first conveying channel (104); An electrostatic generator is arranged in the cup body (1); The electrode heads (3) are in plurality, and the electrode heads (3) are arranged in the receiving groove (202) at intervals, and the electrode heads (3) are all electrically connected to the electrostatic generator.

2. A powder bell cup according to claim 1, characterized in that: The cup head (2) comprises: A cover body (201), wherein the receiving groove (202) is arranged in the cover body (201), the cover body (201) has a second conveying channel (205), and after the cup head (2) is connected to the cup body (1), the first conveying channel (104) is communicated with the second conveying channel (205); The support platform (204) is arranged in the containing groove (202), the support platform (204) has a connecting portion (203), and the stopper (4) is arranged on the connecting portion (203).

3. A powder bell cup according to claim 1, characterized in that: The containing groove (202) is in a trumpet-mouth shape.

4. A powder rotary cup according to claim 2, characterized in that: The support platform (204) is in the shape of a ring, and has a through hole (2041) in the middle of the support platform (204), and the first conveying channel (104) is connected to the containing groove (202) through the through hole (2041).

5. The powder bell cup according to claim 1, characterized in that: The stopper (4) is conical in shape, the stopper (4) is adapted to the receiving groove (202), and the air outlet gap (6) is formed between the side wall of the stopper (4) and the inner wall of the receiving groove (202).

6. A powder bell cup according to claim 2, characterized in that: The stopper (4) has a mounting hole (401) and further comprises: A positioning adjustment rod (5) is arranged in the mounting hole (401); the positioning adjustment rod (5) passes through the mounting hole (401) and is arranged on the connecting portion (203); the positioning adjustment rod (5) is used to adjust the width of the air outlet gap (6).

7. The powder bell cup according to claim 1, characterized in that: The cup body (1) comprises: The feed mixing section (101) has an air inlet (1011) and a feed inlet (1012), and a mixed air chamber is provided in the feed mixing section, and the mixed air chamber is communicated with the first conveying channel (104).

8. The powder bell cup according to claim 1, characterized in that: The cup body (1) further comprises: The power part (102) is arranged on the cup head (2), the cup head (2) is arranged on the power part (102), and the power part (102) drives the cup head (2) to rotate.

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