Spraying equipment with recovery function

Abstract

The utility model provides spraying equipment with a recovery function. The powder particles enter the machining part through the flowing cavity, and spraying operation is conducted on a to-be-machined part in the machining part. After spraying is completed, powder particles can fall into a falling part through a falling hole, due to the fact that a first transmission rod is arranged in the falling part, the powder particles can be driven to move downwards and then enter a horizontal transmission area and a vertical transmission area in sequence, and the powder particles are conveyed through a second transmission rod and a third transmission rod. And the powder particles are conveyed back into the feeding channel again, and cyclic operation is carried out again under the action of the high-pressure gas, so that repeated utilization of the powder particles is achieved.

Description

Technical Field

[0001] This utility model relates to the field of cold spraying technology, specifically to a spraying device with a recycling function. Background Technology

[0002] Cold spraying technology is based on the principle of aerodynamics. It uses high-pressure gas to carry powder particles from the axial direction into the spray gun to generate a supersonic flow. After being accelerated by the spray gun, the powder particles collide with the substrate in a completely solid state. When the particle velocity reaches a certain critical velocity, the particles will adhere to the surface of the substrate upon impact, and plastic deformation will occur, depositing on the substrate surface to form a dense coating.

[0003] In the existing technology, during the cold spraying process, after the cold spraying operation is completed, the powder particles will be scattered in the spraying area. It is necessary to manually remove the powder particles and put them back into the equipment to repeat the subsequent spraying operation. This spraying operation method is inefficient and not conducive to continuous operation. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defect of existing spraying equipment that is not conducive to continuous operation.

[0005] Therefore, this utility model provides a spraying device with a recycling function, comprising: a substrate having a flow cavity inside; a processing section disposed on one side of the flow cavity and adapted to hold a workpiece to be processed; a feeding channel communicating with the flow cavity and adapted to introduce powder particles; an air vent adapted to introduce high-pressure gas and communicating with the flow cavity; a plurality of falling holes disposed on the processing section; a falling section disposed below the processing section and communicating with the falling section, the falling section having flow holes, a first transmission rod disposed inside the falling section, the transmission rod being connected to a first transmission motor located outside the falling section; a horizontal transmission zone communicating with the falling section and having a second transmission rod disposed inside, the second transmission rod being connected to a second transmission motor; and a vertical transmission zone, one end of which is connected to the horizontal transmission zone and the other end of which is connected to the feeding channel, the vertical transmission zone having a third transmission rod disposed inside, the third transmission rod being connected to a third transmission motor.

[0006] The spraying equipment with recycling function provided by this utility model further includes: a first heating unit disposed outside the feed channel, the first heating unit including a first hot water inlet and a first hot water outlet; a recycling water tank connected to the first hot water inlet and the first hot water outlet respectively, an inlet pipe disposed between the recycling water tank and the first hot water inlet, a return pipe disposed between the recycling water tank and the first hot water outlet, and a pump body disposed on the inlet pipe or the return pipe.

[0007] The spraying equipment with recycling function provided by this utility model further includes: a second heating unit, which is disposed outside the horizontal transmission zone, and the second heating unit is provided with a second hot water inlet and a second hot water outlet; the return water pipe includes a first section and a second section, wherein the first section is connected to the first hot water outlet and the second hot water inlet respectively, and the second section is connected to the second hot water outlet and the recycling water tank.

[0008] The spraying equipment with recycling function provided by this utility model has a spiral-shaped pipe inside the second heating part, and a second hot water inlet and a second hot water outlet are respectively provided at both ends of the pipe.

[0009] The present invention provides a spraying device with a recycling function, wherein the processing section is equipped with a blowing device, and the blowing device is oriented towards the drop hole.

[0010] The spraying equipment with recycling function provided by this utility model has a heat insulation part provided on the outside of the first heating part and / or the second heating part.

[0011] The present invention provides a spraying device with a recycling function, wherein the recycling water tank is equipped with a heater.

[0012] The present invention provides a spraying device with a recycling function, wherein a temperature sensor is installed in the recycling water tank and the temperature sensor is electrically connected to the heater.

[0013] The spraying equipment with recycling function provided by this utility model has a door on the processing section.

[0014] The technical solution of this utility model has the following advantages:

[0015] 1. The spraying equipment with recycling function provided by this utility model includes: a substrate with a flow cavity inside; a processing section disposed on one side of the flow cavity and adapted to place the workpiece to be processed inside; a feeding channel communicating with the flow cavity and adapted to introduce powder particles; an air vent adapted to introduce high-pressure gas and communicating with the flow cavity; a plurality of falling holes disposed on the processing section; a falling section disposed below the processing section and communicating with the falling section, the falling section having flow holes, a first transmission rod disposed inside the falling section, the transmission rod being connected to a first transmission motor located outside the falling section; a horizontal transmission zone communicating with the falling section and having a second transmission rod disposed inside, the second transmission rod being connected to a second transmission motor; and a vertical transmission zone, one end of which is connected to the horizontal transmission zone and the other end of which is connected to the feeding channel, the vertical transmission zone having a third transmission rod disposed inside, the third transmission rod being connected to a third transmission motor.

[0016] In this invention, powder particles enter the processing section through a flow chamber and are sprayed onto the workpiece. After spraying, the powder particles fall through a drop hole into a drop section. A first transmission rod in the drop section moves the powder particles downwards, then sequentially into a horizontal transmission zone and a vertical transmission zone. A second and third transmission rod then transfers the powder particles back to the feed channel, where they are circulated again under high-pressure gas, thus enabling the repeated use of the powder particles.

[0017] 2. The spraying equipment with recycling function provided by this utility model further includes: a first heating unit disposed outside the feed channel, the first heating unit including a first hot water inlet and a first hot water outlet; a recycling water tank connected to the first hot water inlet and the first hot water outlet respectively, an inlet pipe disposed between the recycling water tank and the first hot water inlet, a return water pipe disposed between the recycling water tank and the first hot water outlet, and a pump body disposed on the inlet pipe or the return water pipe.

[0018] In existing technologies, since the entire process of cold spraying is carried out at room temperature or a low temperature, there is no situation where the coating material powder particles are heated at high temperature. Therefore, there will be no effects that affect the coating performance, such as high-temperature oxidation, vaporization, melting, and crystallization. It can effectively avoid material oxidation and melting, thereby ensuring the quality and performance of the coating. It is particularly suitable for spraying temperature-sensitive materials, such as nano-phase materials, amorphous materials, oxygen-sensitive materials (such as copper, titanium, etc.), and phase change-sensitive materials (such as carbides, etc.).

[0019] In this invention, during the spraying process, hot water is first introduced into the recovery water tank to heat the first heating unit. At the same time, powder particles are introduced into the feed channel. After the powder particles are heated, their temperature increases. The heated powder particles, together with the high-pressure gas, complete the spraying operation.

[0020] The cold spraying equipment provided by this utility model integrates the heating operation of powder particles inside the cold spraying equipment, avoiding the low efficiency caused by the prior art which requires heating the powder particles first and then introducing them into the cold spraying equipment for spraying.

[0021] In addition, by setting up a recycling water tank, the water in the first heating section can be circulated, thereby effectively utilizing the heat in the hot water, reducing the energy consumption of the entire equipment, and making it more environmentally friendly.

[0022] 3. The spraying equipment with recycling function provided by this utility model further includes: a second heating unit disposed outside the horizontal transmission zone, the second heating unit being provided with a second hot water inlet and a second hot water outlet; the return water pipe includes a first section and a second section, wherein the first section is connected to the first hot water outlet and the second hot water inlet respectively, and the second section is connected to the second hot water outlet and the recycling water tank.

[0023] The first heating section and the second heating section are connected in series. The first heating section and the second heating section use the same recovery water tank, which can reduce the space occupied by the whole equipment.

[0024] Meanwhile, by setting up a second heating section to heat the horizontal transmission zone, the powder particles flowing inside the second heating section can be heated, allowing the powder particles to be heated simultaneously in both the first and second heating sections. This effectively ensures the temperature rise of the powder particles, thereby ensuring the subsequent coating quality.

[0025] 4. The spraying equipment with recycling function provided by this utility model has a blowing device on the processing part, and the blowing device is oriented towards the falling hole.

[0026] With the above setup, when the powder particles in the drop hole become partially blocked, the powder particles can be removed from the drop hole by starting the blowing device, thus preventing blockage and affecting the normal flow of powder particles.

[0027] 5. The spraying equipment with recycling function provided by this utility model has a temperature sensor installed in the recycling water tank, and the temperature sensor is electrically connected to the heater.

[0028] By using a temperature sensor in conjunction with a heater, when the water temperature falls below the preset temperature, the temperature sensor sends a signal to the heater, which then reheats the water. Once the preset temperature is reached, the heater stops heating, thus maintaining the water temperature within a relatively high range. This prevents insufficient adhesion of powder particles after spraying due to excessively low water temperature. It also effectively ensures the automated operation of the equipment. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1A schematic diagram of the structure of the spraying equipment with recycling function provided by this utility model.

[0031] Explanation of reference numerals in the embodiments:

[0032] 1. Flow chamber; 2. Processing section; 3. Feed channel; 4. Vent; 5. Drop section; 6. First transmission rod; 7. First transmission motor; 8. Horizontal transmission zone; 9. Second transmission rod; 10. Second transmission motor; 11. Vertical transmission zone; 12. Third transmission rod; 13. Third transmission motor; 14. First heating section; 15. First hot water inlet; 16. First hot water outlet; 17. Recycle water tank; 18. Water inlet pipe; 19. Second heating section; 20. Second hot water inlet; 21. Second hot water outlet; 22. First section; 23. Second section; 24. Blowing device; 25. Heater; 26. Drop hole; 27. Vent. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] Example

[0038] This embodiment provides a spraying device with a recycling function, which can be used in cold spraying operations, including:

[0039] The matrix has a flow cavity 1 inside; such as Figure 1 As shown, along the direction from left to right, the flow cavity 1 itself includes a constriction section, a throat, and an expansion section. By forming a structure similar to a Raoult tube, the fluid can be accelerated, which helps the subsequent cold spraying operation.

[0040] The processing section 2 is located on one side of the flow cavity 1 and is suitable for placing the workpiece to be processed inside; the feed channel 3 is connected to the flow cavity 1 and is suitable for introducing powder particles.

[0041] Specifically, such as Figure 1 As shown, a door structure is provided on the right side of the processing section 2. When a spraying operation is required, the door is opened and the workpiece to be processed is placed into the processing section 2. After the spraying operation is completed, the door is opened again and the workpiece to be processed is taken out.

[0042] Vent 4 is suitable for introducing high-pressure gas, and vent 4 is connected to the flow chamber 1;

[0043] Vent 4 is used to connect high-pressure gas. The source of high-pressure gas can be a gas cylinder or a blower, as long as it can generate air with a certain pressure and drive the powder particles to move.

[0044] A plurality of falling holes 26 are provided on the processing part 2; a falling part 5 is provided below the processing part 2 and is connected to the falling part 5, the falling part 5 is provided with flow holes, a first transmission rod 6 is provided inside the falling part 5, and the transmission rod is connected to a first transmission motor 7 located outside the falling part 5.

[0045] The drop hole 26 is used to realize the falling action of powder particles. In this embodiment, the diameter of the drop hole 26 is smaller than the diameter of the powder particles, so as to ensure that the powder particles can fall smoothly. The shape of the drop hole 26 is not limited, and can be any shape in the prior art such as square or circle.

[0046] The horizontal transmission zone 8 is connected to the falling part 5 and has a second transmission rod 9 inside, which is connected to the second transmission motor 10; the vertical transmission zone 11 has one end connected to the horizontal transmission zone 8 and the other end connected to the feeding channel 3, and has a third transmission rod 12 inside, which is connected to the third transmission motor 13.

[0047] Specifically, such as Figure 1As shown, the right side of the horizontal transmission zone 8 is connected to the falling section 5. Powder particles flowing out of the falling section 5 enter the horizontal transmission zone 8. Since a second transmission rod 9 is provided inside the horizontal transmission zone 8, the powder particles can move from right to left under the drive of the second transmission rod 9, and gradually move to below the vertical transmission zone 11, as shown. Figure 1 As shown, after the powder particles move to the bottom of the vertical transmission zone 11, they will move upward under the drive of the third transmission rod 12 and gradually move to the top position.

[0048] In this embodiment, the first transmission rod 6, the second transmission rod 9, and the third transmission rod 12 are all configured with a helical blade structure.

[0049] In this embodiment, it further includes: a first heating unit 14, disposed outside the feed channel 3, the first heating unit 14 including a first hot water inlet 15 and a first hot water outlet 16; a recovery water tank 17, connected to the first hot water inlet 15 and the first hot water outlet 16 respectively, an inlet pipe 18 is provided between the recovery water tank 17 and the first hot water inlet 15, a return water pipe is provided between the recovery water tank 17 and the first hot water outlet 16, and a pump body is provided on the inlet pipe 18 or the return water pipe.

[0050] Specifically, a water pipe can be installed in the first heating section 14, with the two ends of the water pipe connected to the first hot water inlet 15 and the first hot water outlet 16, respectively. Hot water enters the water pipe to heat the powder particles inside the first heating section 14.

[0051] In cold spraying, heating is used to bring the powder materials, such as metals, alloys, and ceramics, to a certain temperature, increasing the activity and flowability of the particles. This temperature is far below the material's melting point, but proper heating allows the particles to undergo plastic deformation more easily when they impact the workpiece surface at high speed, thus achieving effective deposition. Heating increases the ductility of the powder, and when powder particles impact the workpiece at supersonic speeds, the heated particles adhere better to the workpiece surface, much like how slightly softened metal is more easily shaped, resulting in a high-quality coating.

[0052] In this embodiment, an insulation layer, such as a sponge structure, can also be provided on the outside of the first heating part 14 to ensure that the first heating part 14 is kept at a certain temperature, and to prevent the water temperature of the hot water from being lost rapidly to the outside, thereby further reducing the energy consumption of the equipment and achieving the purpose of energy saving.

[0053] Furthermore, the structure and material of the water recovery tank 17 are not limited, as long as it can store hot water. At the same time, a pump is installed on the inlet pipe 18 or the return pipe. When the pump is started, the hot water will circulate inside the first heating section 14, continuously introducing heat into the first heating section 14 to ensure stable heating.

[0054] By setting up a recycling water tank 17, the water in the first heating unit 14 and the second heating unit 19 can be circulated, thereby effectively utilizing the heat in the hot water, reducing the energy consumption of the entire equipment, and making it more environmentally friendly. At the same time, the first heating unit 14 and the second heating unit 19 use the same recycling water tank 17, which can reduce the space occupied by the entire equipment.

[0055] In this embodiment, it also includes: a second heating part 19, which is disposed outside the horizontal transmission area 8, and the second heating part 19 is provided with a second hot water inlet 20 and a second hot water outlet 21; the return water pipe includes a first section 22 and a second section 23, wherein the first section 22 is connected to the first hot water outlet 16 and the second hot water inlet 20 respectively, and the second section 23 is connected to the second hot water outlet 21 and the recovery water tank 17.

[0056] The first section 22 and the second section 23 act as a bridge, allowing hot water circulation between the first heating unit 14 and the second heating unit 19. The first heating unit 14 and the second heating unit 19 are connected in series, and both the first heating unit 14 and the second heating unit 19 use a single recovery water tank 17, which reduces the space occupied by the entire device.

[0057] Meanwhile, by setting the second heating section 19 to heat the horizontal transmission zone 8, the powder particles flowing inside the second heating section 19 can be heated, so that the powder particles can be heated in both the first heating section 14 and the second heating section 19 at the same time. This can effectively ensure the heating of the powder particles, thereby ensuring the subsequent coating quality.

[0058] Specifically, the structure of the second heating unit 19 is not limited, as long as it can achieve the circulation of hot water. In one embodiment, the second heating unit 19 is provided with a spirally extending pipe, and the two ends of the pipe are respectively provided with a second hot water inlet 20 and a second hot water outlet 21.

[0059] Meanwhile, a heat insulation section can also be provided on the outside of the second heating section 19 to further insulate the second heating section 19, thereby activating the energy-saving effect. The heat insulation section can be made of common materials such as asbestos.

[0060] like Figure 1As shown, a heater 25 is installed inside the recycled water tank 17. The heater 25 is connected to an external power source. The structure of the heater 25 is not limited; it can be a common resistance heater as long as it can perform the heating action. A power source is connected to the recycled water tank 17, and the power source is connected to the heater 25.

[0061] Furthermore, in this embodiment, a temperature sensor is installed inside the recycled water tank 17, and the temperature sensor is electrically connected to the heater 25.

[0062] By cooperating with the heater 25, when the water temperature falls below the preset temperature, the temperature sensor sends a signal to the heater 25, which then reheats the hot water. Once the preset temperature is reached, the heater 25 stops heating, thus maintaining the water temperature within a relatively high range and preventing insufficient adhesion of powder particles after spraying due to excessively low water temperature.

[0063] Furthermore, in this embodiment, the inner diameter of the substrate gradually decreases from left to right. As the inner diameter decreases, the flow rate of the powder particles gradually increases. Due to the initial velocity, when mixed with high-pressure gas, it will have a higher velocity, thereby effectively ensuring the subsequent cold spraying operation.

[0064] In this embodiment, the feed channel 3 is located in the left-hand region inside the flow cavity 1. Connecting plates are provided at both ends of the feed channel 3. Ventilation holes 27 are provided on the connecting plates. The outer wall of the connecting plates is connected to the inner wall of the base 1.

[0065] Specifically, such as Figure 1 As shown, since the feed channel 3 is horizontally positioned within the flow cavity 1, connecting plates are installed at both the left and right ends of the feed channel 3 to facilitate its installation. The outer ends of the connecting plates are connected to the inner wall of the flow cavity 1. The connecting plates can be made of metal and are welded to the flow cavity 1. Several vent holes are also provided on the connecting plates to allow high-pressure gas to pass smoothly through them and subsequently propel the powder particles. The number and shape of the vent holes can be determined based on actual working conditions and are not limited in this embodiment.

[0066] like Figure 1 As shown, a blower 24 is provided on the processing section 2, and the blower 24 faces the direction of the drop hole 26. In such a way... Figure 1 From the view shown, the outlet of the blower 24 is oriented downwards. The blower can employ a structure commonly found in the prior art, consisting of a motor and a fan, to achieve the blowing operation.

[0067] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A spraying device with a recycling function, characterized in that, include: The matrix has a flow cavity (1) inside; The processing section (2) is located on one side of the flow cavity (1) and is adapted to place the workpiece to be processed inside; The feed channel (3) is connected to the flow chamber (1) and is suitable for introducing powder particles; Vent (4) is suitable for introducing high-pressure gas, and the vent is connected to the flow chamber (1); Several drop holes (26) are provided on the processing part (2); The falling part (5) is located below the processing part (2) and communicates with the falling hole (26). The falling part (5) is provided with a flow hole. The falling part (5) is provided with a first transmission rod (6) inside. The transmission rod is connected to a first transmission motor (7) located outside the falling part (5). The horizontal transmission area (8) is connected to the drop hole (26) and is equipped with a second transmission rod (9), which is connected to the second transmission motor (10). The vertical transmission zone (11) is connected at one end to the horizontal transmission zone (8) and at the other end to the feed channel (3). A third transmission rod (12) is provided in the vertical transmission zone (11), and the third transmission rod (12) is connected to the third transmission motor (13).

2. The spraying equipment with recycling function according to claim 1, characterized in that, Also includes: A first heating unit (14) is provided outside the feed channel (3). The first heating unit (14) includes a first hot water inlet (15) and a first hot water outlet (16). A water recovery tank (17) is connected to the first hot water inlet (15) and the first hot water outlet (16) respectively. An inlet pipe (18) is provided between the water recovery tank (17) and the first hot water inlet (15), and a return pipe is provided between the water recovery tank (17) and the first hot water outlet (16). A pump body is provided on the inlet pipe (18) or the return pipe.

3. The spraying equipment with recycling function according to claim 2, characterized in that, Also includes: The second heating part (19) is provided outside the horizontal transmission area (8), and the second heating part (19) is provided with a second hot water inlet (20) and a second hot water outlet (21); The return water pipe includes a first section (22) and a second section (23), wherein the first section (22) is connected to the first hot water outlet (16) and the second hot water inlet (20) respectively, and the second section (23) is connected to the second hot water outlet (21) and the recovery water tank (17).

4. The spraying equipment with recycling function according to claim 3, characterized in that, The second heating part (19) is provided with a spiral-shaped pipe inside, and the two ends of the pipe are respectively provided with a second hot water inlet (20) and a second hot water outlet (21).

5. The spraying equipment with recycling function according to claim 1, characterized in that, The processing section (2) is provided with a blower (24) which faces the drop hole (26).

6. The spraying equipment with recycling function according to claim 4, characterized in that, A heat insulation portion is provided on the outside of the first heating portion (14) and / or the second heating portion (19).

7. The spraying equipment with recycling function according to claim 6, characterized in that, The recycled water tank (17) is equipped with a heater (25).

8. The spraying equipment with recycling function according to claim 7, characterized in that, A temperature sensor is installed inside the water recycling tank (17), and the temperature sensor is electrically connected to the heater (25).

9. The spraying equipment with recycling function according to claim 1, characterized in that, The processing section (2) is provided with a door.

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