Automatic grinding material screening device

Abstract

The utility model provides an automatic grinding material screening device which comprises a screening bin connected to the bottom of a jet mill and transversely arranged, the bottom of the screening bin is movably connected with a supporting frame, and an inclination angle adjusting mechanism is connected between the supporting frame and the screening bin. A screen is transversely arranged in the screening bin, one end of the screen is connected with a vibrator, the discharging end of the screening bin is provided with a first abrasive discharging pipe and a second abrasive discharging pipe, and the first abrasive discharging pipe and the second abrasive discharging pipe are located on the upper side and the lower side of the screen respectively. The automatic grinding material screening device achieves automatic vibration screening on grinding materials smashed by the jet mill, and meanwhile the screening discharging speed can be controlled.

Description

Technical Field

[0001] The utility model relates to the field of screening equipment, in particular to an automatic abrasive screening device. Background Art

[0002] When using a jet mill to grind abrasives, if they are not completely crushed in one go or need to be crushed repeatedly, it is necessary to manually put the crushed materials into the screening equipment for screening, and then put the coarse powder back into the jet mill for crushing. This operation is cumbersome, inefficient, and labor-intensive. Therefore, there is an urgent need for an automated equipment to automatically screen the abrasives for the sandblasting machine.

[0003] The utility model patent with authorization announcement number CN214560107U discloses an automatic screening device for abrasives in a sandblasting machine, comprising a sandblasting machine, an abrasive recovery storage tank installed at the bottom of the sandblasting machine, the sandblasting machine using a hoist to lift the abrasive into the abrasive storage tank, the lower end of the abrasive storage tank being connected to the upper end of the screening bin, and a feed switch being installed between the lower end of the abrasive storage tank and the upper end of the screening bin, a distributor being installed on the upper feed port inside the screening bin, the feed switch being connected to an air compressor, a grading screen plate being installed below the distributor and below the screening bin, and the grading screen plate being installed at an angle. The automatic screening device for abrasives in a sandblasting machine realizes the recycling of abrasives and the automated screening and recovery of abrasives. At the same time, an automatic controller realizes the automatic collection, dust removal, separation, and recovery of abrasives, thereby reducing production costs, improving production efficiency, and reducing labor intensity. However, the automatic screening equipment for abrasives in the sandblasting machine only relies on a grading screen plate with a fixed tilt angle for dust removal, and the screening discharge rate cannot be manually adjusted and controlled. At the same time, the automatic screening equipment for abrasives in the sandblasting machine is intended to remove powder and dust during the sandblasting process, and is not intended to screen the abrasive for secondary crushing. Utility Model Content

[0004] In order to realize automatic vibration screening of the abrasive crushed by the air flow mill and control the screening discharge rate at the same time, the technical solution adopted by the utility model is: an automatic abrasive screening device, comprising a screening bin connected to the bottom of the air flow mill and arranged horizontally, the bottom of the screening bin is movably connected to a support frame, and an inclination angle adjustment mechanism is connected between the support frame and the screening bin;

[0005] A screen is horizontally arranged in the screening bin, one end of the screen is connected to a vibrator, and the discharge end of the screening bin is respectively provided with a first abrasive discharge pipe and a second abrasive discharge pipe, and the first abrasive discharge pipe and the second abrasive discharge pipe are respectively located on the upper and lower sides of the screen.

[0006] Based on the above, in order to facilitate the adjustment of the tilt angle, the tilt angle adjustment mechanism is an electric telescopic rod, a pneumatic telescopic rod, a hydraulic telescopic rod or a screw.

[0007] Based on the above, the screening bin is hinged obliquely downward on the support frame in a form in which the discharge end of the screening bin is lower than the feed end of the screening bin.

[0008] Based on the above, the screening bin is a cylindrical screening bin, the screen is transversely arranged on the central cross section of the cylindrical screening bin, and the front and rear ends of the cylindrical screening bin are respectively detachably provided with sealing covers.

[0009] Based on the above, the outlet end of the first abrasive discharge pipe and the outlet end of the second abrasive discharge pipe are further connected to a receiving container respectively.

[0010] Based on the above, a butterfly valve is further provided at the feed end of the screening bin.

[0011] Based on the above, the feed end of the screening bin is arranged lower than the bottom of the air flow mill.

[0012] Specifically, the vibrator in the present invention includes an ultrasonic resonant power supply, an oscillator, and a resonance ring, wherein the resonance ring is connected to the screen, and the oscillator is connected to the resonance ring;

[0013] The ultrasonic resonant power supply is used to generate high-frequency electrical oscillations, the oscillator is used to convert the high-frequency electrical oscillations into high-frequency oscillation waves, and transmit the high-frequency oscillation waves to the resonance ring to cause the resonance ring to resonate, and the resonance ring is used to transmit the vibrations to the screen.

[0014] Specifically, the cylindrical screening bin in the present invention can be made of cylindrical organic glass material.

[0015] This utility model offers substantial advantages and advancements over existing technologies. Specifically, the automatic abrasive screening device provided by this utility model utilizes a transparent organic glass pipe as a screening chamber, with a horizontally removable screen fixed in the middle along the pipe. The mesh frame utilizes an ultrasonic vibration mode, and the pipe is supported by a bracket below, with a screw used to adjust the pipe inclination. The feed port of the screening chamber is docked with the discharge chamber of the airflow mill. The discharge port of the screening chamber is divided into two layers, each connected to a storage container. This allows the material, after initial pulverization by the airflow mill, to be automatically and promptly transported to the screen for screening, eliminating manual operation steps and reducing labor intensity.

[0016] At the same time, the screen mesh frame is connected to the vibrator through the connection terminal, and the ultrasonic vibration is controlled by the power box. The upper and lower pneumatic butterfly valves of the airflow crusher discharge bin adopt a fixed time linkage switch, so that the material is discharged into the organic glass pipe screen every 1 to 2 minutes. According to the flow state of the material under the ultrasonic vibration, the angle of the support frame is adjusted so that the material is evenly separated from high to low through the screen and enters the storage container respectively. When the oversize material that needs to be re-crushed accumulates to a certain amount, it is re-entered into the airflow crushing equipment for re-crushing, thus realizing manual adjustment of the material screening and discharging speed and screening process. At the same time, it is also convenient to dismantle and replace the screen in time according to the material particle size requirements, without adding other screening equipment to achieve rapid material turnover, reducing costs and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the automatic abrasive screening device provided by the utility model.

[0018] Figure 2 It is a schematic diagram of the connection structure between the automatic abrasive screening device and the collector provided by the utility model.

[0019] In the figure: 1. air flow mill; 2. first butterfly valve; 3. feed pipe; 4. screen; 5. screening bin; 6. first abrasive discharge pipe; 7. second abrasive discharge pipe; 8. first storage container; 9. second storage container; 10. tilt angle adjustment mechanism; 11. support frame; 12. vibrator; 13. collector; 14. feed pipe; 15. second butterfly valve; 16. discharge bin. DETAILED DESCRIPTION

[0020] The technical solution of the present utility model is further described in detail below through specific implementation methods.

[0021] Example 1

[0022] This embodiment provides an automatic abrasive screening device, such as Figure 1 and Figure 2 As shown, it includes a screening bin 5 connected to the bottom of the airflow mill 1 and arranged horizontally. The bottom of the screening bin 5 is movably connected to a support frame 11, and an inclination angle adjustment mechanism 10 is connected between the support frame 11 and the screening bin 5.

[0023] Specifically, a screen 4 is disposed transversely within the screening bin 5, one end of which is connected to a vibrator 12. A first abrasive discharge pipe 6 and a second abrasive discharge pipe 7 are disposed at the discharge end of the screening bin 5. The first abrasive discharge pipe 6 and the second abrasive discharge pipe 7 are located above and below the screen 4, respectively.

[0024] In order to facilitate the adjustment of the tilt angle, the tilt angle adjustment mechanism in this embodiment can be an electric telescopic rod, a pneumatic telescopic rod, a hydraulic telescopic rod or a screw. The screening bin is hinged downwardly on the support frame in the form that the screening bin discharge end is lower than the screening bin feed end.

[0025] Specifically, the vibrator includes an ultrasonic resonant power supply, an oscillator, and a resonance ring, wherein the resonance ring is connected to the sieve, and the oscillator is connected to the resonance ring;

[0026] The ultrasonic resonant power supply is used to generate high-frequency electrical oscillations, the oscillator is used to convert the high-frequency electrical oscillations into high-frequency oscillation waves, and transmit the high-frequency oscillation waves to the resonance ring to cause the resonance ring to resonate, and the resonance ring is used to transmit the vibrations to the screen.

[0027] Example 2

[0028] This embodiment provides an automatic abrasive screening device. The main difference from Embodiment 1 is that in this embodiment, the screening bin is cylindrical, the screen is transversely arranged on the central cross-section of the cylindrical screening bin, and removable sealing covers are provided at the front and rear ends of the cylindrical screening bin. The cylindrical screening bin can be made of cylindrical organic glass.

[0029] Example 3

[0030] This embodiment provides an automatic abrasive screening device. The main difference from Example 1 is that, in this embodiment, the outlet ends of the first and second abrasive discharge pipes are connected to first and second storage containers 8 and 9, respectively. A first butterfly valve 2 is also provided at the feed end of the screening bin. A feed pipe 3, connected to the screening bin 5, is provided at the bottom of the first butterfly valve 2. The feed end of the screening bin is positioned below the bottom of the airflow mill.

[0031] Specifically, the air flow mill 1 is further connected to a collector 13 via a feeding pipe 14 , and the bottom of the collector 13 is connected to a discharge bin 16 via a second butterfly valve 15 .

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and not 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 specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solution of the utility model, they should all be included in the scope of the technical solution for which protection is requested in the utility model.

Claims

1. An automatic abrasive screening device, characterized by: It includes a screening bin connected to the bottom of the air flow mill and arranged horizontally, the bottom of the screening bin is movably connected to a support frame, and an inclination angle adjustment mechanism is connected between the support frame and the screening bin; A screen is horizontally arranged in the screening bin, one end of the screen is connected to a vibrator, and the discharge end of the screening bin is respectively provided with a first abrasive discharge pipe and a second abrasive discharge pipe, and the first abrasive discharge pipe and the second abrasive discharge pipe are respectively located on the upper and lower sides of the screen.

2. The automatic abrasive screening device according to claim 1, characterized in that: The tilt angle adjustment mechanism is an electric telescopic rod, a pneumatic telescopic rod, a hydraulic telescopic rod or a lead screw.

3. The automatic abrasive screening device according to claim 1 or 2, characterized in that: The screening bin is hinged obliquely downward on the supporting frame in a form in which the discharge end of the screening bin is lower than the feed end of the screening bin.

4. The automatic abrasive screening device according to claim 1, characterized in that: The screening bin is a cylindrical screening bin, the screen is transversely arranged on the central cross section of the cylindrical screening bin, and the front and rear ends of the cylindrical screening bin are respectively detachably provided with sealing covers.

5. The automatic abrasive screening device according to claim 1, 2 or 4, characterized in that: The outlet end of the first abrasive discharge pipe and the outlet end of the second abrasive discharge pipe are also connected to a receiving container respectively.

6. The automatic abrasive screening device according to claim 5, characterized in that: The feeding end of the screening bin is also provided with a butterfly valve.

7. The automatic abrasive screening device according to claim 1, characterized in that: The feeding end of the screening bin is arranged below the bottom of the airflow mill.

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