Unpowered vibrating screen for laser cladding powder

Abstract

The utility model relates to the technical field of vibrating screens, in particular to an unpowered vibrating screen for laser cladding powder, which comprises a shell, a first screen plate and a second screen plate, the first screen plate and the second screen plate are arranged up and down, a screening channel is arranged in the middle of the shell along the vertical direction, and a first screen plate placing groove and a second screen plate placing groove are arranged in the shell. The first sieve plate and the second sieve plate are slidably arranged in the first sieve plate containing groove and the second sieve plate containing groove correspondingly, and the first sieve plate and the second sieve plate are obliquely arranged and penetrate through the sieving channel. Impact force generated when laser cladding powder falls is used for driving the first screen plate to slide downwards along the first screen plate containing groove, meanwhile, the second screen plate moves reversely under the action of the rotating rod, when the spring is compressed to a certain degree, the spring can rebound back to achieve primary vibration, and the laser cladding powder continuously impacts the coarse screen plate, so that the coarse screen plate is continuously shaken. The actions can be repeatedly circulated, so that the vibrating screen continuously moves, and screening is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vibrating screens, and more specifically to an unpowered vibrating screen for laser cladding powder. Background Art

[0002] Laser cladding technology is an advanced surface modification technology that uses a high-energy laser beam to melt a specific material and quickly form a cladding layer with a certain thickness and composition on the surface of the substrate. During the entire laser cladding process, not all powders can fully enter the molten pool. There will always be a part of the powder that fails to melt into the molten pool due to various reasons, such as uneven heat distribution of the laser beam or slight deviations in the powder feeding process. These powders will eventually scatter on the receiving tray or the table of the laser cladding equipment. In order to ensure the recycling of materials and save costs, these scattered powders need to be collected uniformly. The collected powders need to be sieved to remove impurities that may be mixed during the cladding process, such as dust, oil or other impurities. The sieved powder can be fed into the laser cladding system again to be re-clad to form a new cladding layer.

[0003] The Chinese invention patent with publication number CN113441391A discloses a laser cladding powder collection device, which allows qualified powder to flow out of the qualified powder outlet through the sieve holes through the oscillation of the sieve plate, and unqualified powder to flow into the collection box from the waste powder outlet for recollection, thereby achieving the purpose of powder recovery. However, the device requires additional power to achieve the screening function, resulting in energy waste.

[0004] Therefore, it is necessary to improve the prior art. Utility Model Content

[0005] In order to overcome the deficiencies in the prior art, an unpowered vibrating screen for laser cladding powder is provided which has a simple structure, is convenient and safe to use, and does not require additional power.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A non-powered vibrating screen for laser cladding powder comprises a shell and a first sieve plate and a second sieve plate arranged up and down, a screening channel is arranged in the middle of the shell in a vertical direction, a first sieve plate placement slot and a second sieve plate placement slot are arranged in the shell, the first sieve plate and the second sieve plate are slidably arranged in the first sieve plate placement slot and the second sieve plate placement slot respectively, and the first sieve plate and the second sieve plate are both arranged obliquely and penetrate the screening channel;

[0008] There are two first sieve plate placement slots and two second sieve plate placement slots distributed on the left and right. The two sides of the first sieve plate with different heights are respectively inserted into the first sieve plate placement slot on the corresponding side, and a spring is arranged between the first sieve plate and the bottom of the first sieve plate placement slot; the two sides of the second sieve plate with different heights are respectively inserted into the second sieve plate placement slot on the corresponding side, and a spring is arranged between the second sieve plate and the bottom of the second sieve plate placement slot, and a linkage structure is arranged between the first sieve plate and the second sieve plate;

[0009] The shell is provided with a first discharge port, a second discharge port and a third discharge port connected to the screening channel. The first discharge port and the second discharge port are respectively located on the upper side of the first sieve plate and the second sieve plate, and the third discharge port is located on the lower side of the second sieve plate.

[0010] Preferably, the linkage structure includes a rotating rod, a fixed pin is rotatably arranged in the middle of the rotating rod, and the end of the fixed pin is fixedly connected to the shell; connecting rods are fixedly arranged on the end surfaces of the first screen plate and the second screen plate that are close to each other, and the connecting rods are provided with waist-shaped grooves along the length direction, and hinge pins I and hinge pins II are respectively arranged at both ends of the rotating rod, and hinge pins I and hinge pins II are respectively slidably matched with the waist-shaped grooves of the two connecting rods.

[0011] Preferably, the first sieve plate and the second sieve plate are arranged in parallel, and the aperture of the first sieve plate is larger than the aperture of the second sieve plate.

[0012] Preferably, spring guide rods are provided at both ends of the first sieve plate and the second sieve plate, and the springs are sleeved on the corresponding spring guide rods.

[0013] Preferably, the upper end of the screening channel is in a trumpet shape, the first discharge port and the second discharge port are arranged on the same side of the shell, and the third discharge port is arranged on the other side of the shell.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model utilizes the impact force of the falling laser cladding powder to drive the first screen plate to slide downward along the first screen plate placement groove, thereby compressing the spring in the lower first screen plate placement groove, and converting part of the gravitational potential energy of the laser cladding powder into elastic potential energy of the spring; at the same time, the second screen plate moves in the opposite direction under the action of the rotating rod, compressing the spring in the upper second screen plate placement groove; when the spring is compressed to a certain extent, the spring will rebound to achieve a vibration; as the laser cladding powder continuously impacts the coarse screen plate, the above actions will be repeated, thereby realizing continuous movement of the vibrating screen and achieving screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings.

[0017] Figure 1It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 Schematic diagram of the rotating rod connection.

[0019] In the figure: 1-housing; 2-spring; 3-first screen plate; 4-hinge pin I; 5-fixed pin; 6-rotating rod; 7-hinge pin II; 8-second screen plate; 9-first screen plate placement slot; 10-second screen plate placement slot; 11-first discharge port; 12-second discharge port; 13-third discharge port; 14-screening channel; 15-connecting rod; 16-spring guide rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 , Figure 2 As shown, a non-powered vibrating screen for laser cladding powder includes a shell 1 and a first sieve plate 3 and a second sieve plate 8 arranged up and down. The first sieve plate 3 and the second sieve plate 8 are arranged in parallel, and the aperture of the first sieve plate 3 is larger than the aperture of the second sieve plate 8.

[0022] A screening channel 14 is arranged in the middle of the shell 1 along the vertical direction. For the convenience of feeding, the upper end of the screening channel 14 is in a trumpet shape. For the convenience of setting the sieve plate, a first sieve plate placement slot 9 and a second sieve plate placement slot 10 are arranged in the shell 1. The first sieve plate 3 and the second sieve plate 8 are respectively slidably arranged in the first sieve plate placement slot 9 and the second sieve plate placement slot 10. The first sieve plate 3 and the second sieve plate 8 are both inclinedly arranged and penetrate the screening channel 14, so that the material in the screening channel 14 can be screened through the first sieve plate 3 and the second sieve plate 8 in turn. The shell 1 is provided with a first discharge port 11, a second discharge port 12 and a third discharge port 13 connected to the screening channel 14. The first discharge port 11 and the second discharge port 12 are respectively located above the first sieve plate 3 and the second sieve plate 8 and are located on the same side of the shell 1, so that the powder screened by the first sieve plate 3 and the second sieve plate 8 can be discharged from the first discharge port 11 and the second discharge port 12. The third discharge port 13 is located below the second sieve plate 8 and at the other side of the housing 1 , and the material passing through the sieve holes of the second sieve plate 8 is discharged from the third discharge port 13 .

[0023] In order to facilitate the connection of the sieve plate, there are two first sieve plate placement grooves 9 and two second sieve plate placement grooves 10 distributed on the left and right. The two sides of the first sieve plate 3 with different heights are respectively inserted into the first sieve plate placement grooves 9 on the corresponding side. Spring guide rods 16 are provided on both sides of the first sieve plate 3. A spring 2 is provided between the first sieve plate 3 and the bottom of the first sieve plate placement groove 9, and the spring 2 is sleeved on the corresponding spring guide rod 16.

[0024] The two sides of the second sieve plate 8 of different heights are respectively inserted into the second sieve plate placement groove 10 on the corresponding side, and spring guide rods 16 are provided on both sides of the second sieve plate 8. A spring 2 is provided between the second sieve plate 8 and the bottom of the second sieve plate placement groove 10, and the spring 2 is sleeved on the corresponding spring guide rod 16.

[0025] A linkage structure is provided between the first sieve plate 3 and the second sieve plate 8. The linkage structure can adopt a rotating rod 6, and a fixed pin 5 is rotatably provided in the middle of the rotating rod 6, and the end of the fixed pin 5 is fixedly connected to the housing 1, so that the rotating rod 6 can rotate relative to the fixed pin 5. Connecting rods 15 are fixedly provided on the end surfaces of the first sieve plate 3 and the second sieve plate 8 close to each other, and the connecting rod 15 is provided with a waist-shaped groove along the length direction. The two ends of the rotating rod 6 are respectively provided with a hinge pin I4 and a hinge pin II7, and the hinge pin I4 and the hinge pin II7 are respectively slidably matched with the waist-shaped grooves of the two connecting rods 15.

[0026] Working principle:

[0027] When in use, the laser cladding powder is poured from a high place. The laser cladding powder is heavy. When the laser cladding powder contacts the first screen plate 3, it will impact the first screen plate 3 to make it move downward. Since the two sides of the first screen plate 3 are connected by springs and the first screen plate placement slot 9, the first screen plate 3 will stretch the spring 2 on the upper side and compress the spring 2 on the lower side at this time, thereby converting part of the gravitational potential energy of the laser cladding powder into the elastic potential energy of the spring on the first screen plate 3. Moreover, since the lower side of the first screen plate 3 is hinged by the connecting rod 15 and the rotating rod 6, the downward movement of the first screen plate 3 will drive the rotating rod 6 to rotate clockwise around the fixed pin, thereby driving the second screen plate 8 to move upward. At this time, the second screen plate 8 will compress the spring 2 on the upper side and stretch the spring 2 on the lower side, thereby converting another part of the gravitational potential energy of the laser cladding powder into the elastic potential energy of the spring on the second screen plate 8. When the spring is stretched and compressed to a certain extent, the spring 2 will rebound to achieve a vibration. As the laser cladding powder continuously impacts the first screen plate 3, the above actions will be repeated, thereby realizing continuous movement of the screening device, discharging the coarse laser cladding powder from the first discharge port 11, discharging the laser cladding powder after one screening from the second discharge port 12, and discharging the screened laser cladding powder from the third discharge port 13.

[0028] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. An unpowered vibrating screen for laser cladding powder, characterized in that: The invention comprises a housing (1) and a first sieve plate (3) and a second sieve plate (8) arranged above and below. A screening channel (14) is arranged in the middle of the housing (1) in a vertical direction. A first sieve plate placement groove (9) and a second sieve plate placement groove (10) are arranged in the housing (1). The first sieve plate (3) and the second sieve plate (8) are slidably arranged in the first sieve plate placement groove (9) and the second sieve plate placement groove (10), respectively. The first sieve plate (3) and the second sieve plate (8) are both arranged obliquely and penetrate the screening channel (14). The first sieve plate placement groove (9) and the second sieve plate placement groove (10) are both arranged on the left and right sides, and the two sides of the first sieve plate (3) at different heights are respectively inserted into the first sieve plate placement groove (9) on the corresponding side, and a spring (2) is arranged between the first sieve plate (3) and the bottom of the first sieve plate placement groove (9); the two sides of the second sieve plate (8) at different heights are respectively inserted into the second sieve plate placement groove (10) on the corresponding side, and a spring (2) is arranged between the second sieve plate (8) and the bottom of the second sieve plate placement groove (10), and a linkage structure is arranged between the first sieve plate (3) and the second sieve plate (8); The housing (1) is provided with a first discharge port (11), a second discharge port (12) and a third discharge port (13) which are in communication with the screening channel (14); the first discharge port (11) and the second discharge port (12) are respectively located on the upper side of the first sieve plate (3) and the second sieve plate (8); and the third discharge port (13) is located on the lower side of the second sieve plate (8).

2. The unpowered vibrating screen for laser cladding powder according to claim 1, characterized in that: The linkage structure comprises a rotating rod (6), a fixed pin shaft (5) is rotatably arranged in the middle of the rotating rod (6), and the end of the fixed pin shaft (5) is fixedly connected to the housing (1); connecting rods (15) are fixedly arranged on the end surfaces of the first sieve plate (3) and the second sieve plate (8) that are close to each other, and the connecting rod (15) is provided with a waist-shaped groove along the length direction; and hinge pin shafts I (4) and hinge pin shafts II (7) are respectively arranged at both ends of the rotating rod (6), and the hinge pin shafts I (4) and hinge pin shafts II (7) are respectively slidably matched with the waist-shaped grooves of the two connecting rods (15).

3. The unpowered vibrating screen for laser cladding powder according to claim 1, characterized in that: The first sieve plate (3) and the second sieve plate (8) are arranged in parallel, and the aperture of the first sieve plate (3) is larger than the aperture of the second sieve plate (8).

4. The unpowered vibrating screen for laser cladding powder according to claim 1, characterized in that: Both ends of the first sieve plate (3) and the second sieve plate (8) are provided with spring guide rods (16), and the springs (2) are sleeved on the corresponding spring guide rods (16).

5. The unpowered vibrating screen for laser cladding powder according to claim 1, characterized in that: The upper end of the screening channel (14) is in a trumpet shape, the first discharge port (11) and the second discharge port (12) are arranged on the same side of the shell (1), and the third discharge port (13) is arranged on the other side of the shell (1).

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