Anti-blocking device for blanking hopper

Abstract

The utility model relates to a blanking hopper anti-blocking device which comprises a conical blanking hopper, vibrators and blowing heads, a plurality of vibrators are installed on the outer side wall of the conical blanking hopper, the blowing heads are installed on the inner side of the conical blanking hopper and located on four corner angles, the vibrators are connected with an air source bottle through a first air pressure branch, and the air source bottle is connected with the conical blanking hopper through a second air pressure branch. And the blowing head is connected with an air source bottle through a second air pressure branch, so that the blanking hopper is prevented from being blocked, and material breakage during production is avoided.

Description

Technical Field

[0001] The utility model relates to an anti-blocking device, in particular to an anti-blocking device for a material drop hopper. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] In the tobacco industry, electronic belt scales are the main equipment for flow control in the production line. They are generally fed by a combination of a drop hopper and a metering tube with a photoelectric tube. The drop hopper mostly adopts an inverted pyramid structure.

[0004] During the production process, the moisture content of the front-stage equipment in the hopper fluctuates and the fluffy states of different materials are different. Materials often accumulate on the inner wall of the hopper. If the accumulated materials cannot slide down along the inner wall in time, the hopper will be blocked. The materials will block the high-level photoelectric tube of the metering tube, and the front-stage feeding equipment will stop feeding, which will lead to material interruption in the production process. Utility Model Content

[0005] The utility model aims to provide a device for preventing material blocking of a material dropping hopper, which can ensure that the materials accumulated on the inner wall of the material dropping hopper slide down in time.

[0006] To achieve the above-mentioned purpose, the utility model proposes a device for preventing material blocking in a dropping hopper, comprising a conical dropping hopper, a vibrator and a blowing head, a plurality of vibrators are installed on the outer wall of the conical dropping hopper, and a blowing head is installed on the inner side of the conical dropping hopper and on four corners, the vibrator is connected to an air source bottle through a first air pressure branch, and the blowing head is connected to the air source bottle through a second air pressure branch.

[0007] It is further configured that the first air pressure branch includes a manual ball valve, a pressure reducing valve, a pressure gauge and a first solenoid valve, the air outlet end of the gas source bottle is connected to the manual ball valve, the air outlet end of the manual ball valve is connected to the pressure reducing valve, the air outlet end of the pressure reducing valve is connected to the first solenoid valve, a pressure gauge is arranged between the pressure reducing valve and the first solenoid valve, and the air outlet end of the first solenoid valve is connected to a vibrator.

[0008] It is further configured that the air outlet end of the first solenoid valve is connected to the vibrator through three air pressure bypasses respectively.

[0009] It is further configured that the second air pressure branch includes a manual ball valve, a pressure reducing valve, a pressure gauge and a second solenoid valve, the air outlet end of the gas source bottle is connected to the manual ball valve, the air outlet end of the manual ball valve is connected to the pressure reducing valve, a pressure gauge is arranged between the pressure reducing valve and the second solenoid valve, the air outlet end of the pressure reducing valve is connected to two second solenoid valves, and the air outlet end of the second solenoid valve is connected to the blowing head.

[0010] It is further configured that each of the second solenoid valve air outlet ends is communicated with the blowing head through two air pressure bypasses.

[0011] It is further configured that the gas ejection direction of the blowing head is parallel to the edge line of the edge.

[0012] It is further configured that the cross section of the conical drop hopper is an inverted cone that is wide at the top and narrow at the bottom, and the conical drop hopper is fixedly installed by four side plates.

[0013] It is further configured that a mounting base plate is provided on one side of the vibrator, and the vibrator is fixedly mounted on the side wall of the conical drop hopper through the mounting base plate.

[0014] It is further configured that the vibrators are respectively mounted on the front side plate and both side plates of the conical drop hopper.

[0015] It is further configured that the conical drop hopper is made of stainless steel.

[0016] Beneficial effects of one or more of the above technical solutions:

[0017] By installing three pneumatic vibrators on the outer wall of the hopper, installing four pneumatic blowing heads on the inner corners of the hopper, and starting and stopping the pneumatic brake and the blowing heads, the materials accumulated on the inner wall of the hopper can be vibrated and slid down in time to prevent the hopper from being blocked and production interruptions. The pneumatic vibrator circuit and the compressed air blowing circuit are both equipped with solenoid valves, which are controlled by the electronic control program to achieve automatic control of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation on the present application.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] In the figure: 1 gas source bottle; 2 manual ball valve; 3 pressure reducing valve; 4 pressure gauge; 5 first solenoid valve; 6 vibrator; 61 mounting base plate; 7 mounting base plate; 8 conical drop hopper; 81 side plate; 9 blowing head; 10 second solenoid valve; 11 first air pressure branch; 12 second air pressure branch; 13 air pressure bypass. DETAILED DESCRIPTION

[0021] The specific implementation of this embodiment is described below in conjunction with the accompanying drawings.

[0022] Reference Figure 1A device for preventing material blocking of a dropping hopper comprises a conical dropping hopper 8, a vibrator 6 and a blowing head 9. A plurality of vibrators 6 are installed on the outer wall of the conical dropping hopper 8. The blowing heads 9 are installed on the inner side of the conical dropping hopper 8 and at four corners. The vibrator 6 is connected to a gas source bottle 1 through a first air pressure branch 11, and the blowing head 9 is connected to the gas source bottle 1 through a second air pressure branch 12.

[0023] Three vibrators 6 are installed on the outer side of the conical drop hopper 8, respectively installed on the contact side in the material forward direction and the two side surfaces in the material forward direction. Four blowing heads 9 are installed on the four corners of the drop hopper. The blowing direction of the nozzle is parallel to the corner, and the nozzle blows from top to bottom. The vibrator 6 and the blowing head 9 are started by controlling the solenoid valve. Under the vibration action of the vibrator 6 and the blowing of the blowing head 9, the material accumulated on the inner wall of the drop hopper slides down.

[0024] The first air pressure branch 11 includes a manual ball valve 2, a pressure reducing valve 3, a pressure gauge 4 and a first solenoid valve 5. The air outlet end of the air source bottle 1 is connected to the manual ball valve 2, the air outlet end of the manual ball valve 2 is connected to the pressure reducing valve 3, the air outlet end of the pressure reducing valve 3 is connected to the first solenoid valve 5, a pressure gauge 4 is arranged between the pressure reducing valve 3 and the first solenoid valve 5, and the air outlet end of the first solenoid valve 5 is connected to the vibrator 6. In this embodiment, the vibrator 6 adopts an existing pneumatic vibrator of model GT20.

[0025] The air outlet end of the first solenoid valve 5 is connected to the vibrator 6 through three air pressure bypasses 13 respectively.

[0026] The second air pressure branch 12 includes a manual ball valve 2, a pressure reducing valve 3, a pressure gauge 4 and a second solenoid valve 10. The air outlet end of the gas source bottle 1 is connected to the manual ball valve 2, and the air outlet end of the manual ball valve 2 is connected to the pressure reducing valve 3. A pressure gauge 4 is arranged between the pressure reducing valve 3 and the second solenoid valve 10. The air outlet end of the pressure reducing valve 3 is connected to two second solenoid valves 10, and the air outlet end of the second solenoid valve 10 is connected to the blowing head 9. The blowing head 9 in this embodiment is an existing metal pipe.

[0027] The air outlet end of each second solenoid valve 10 is communicated with the blowing head 9 through two air pressure bypasses 13 respectively.

[0028] The manual ball valve 2 provided in the first pneumatic branch 11 and the second pneumatic branch 12 realizes the selectivity of the working circuit, and is configured with a pressure reducing valve 3 to ensure the adjustability of the pressure of the compressed air in the two circuits. The pressure gauge 4 displays the pressure of the pressure reducing valve 3 to ensure the visualization of the compressed air pressure in the two circuits. The first pneumatic branch 11 and the second pneumatic branch 12 are both configured with a first solenoid valve 5 and a second solenoid valve 10, wherein the first solenoid valve 5 and the second solenoid valve 10 both adopt existing two-position two-way solenoid valves, and the solenoid valves are connected to the electronic control system, and the electronic control system controls the opening and closing of the solenoid valves to ensure the automatic control of the device.

[0029] The vibrator 6 circuit and the compressed air blowing circuit are both equipped with a pressure reducing valve 3 with a pressure display. By adjusting the pressure of the two circuits through the pressure reducing valve 3, the vibration frequency and vibration force of the vibrator 6 can be controlled, and the blowing effect of the blowing head 9 can also be controlled.

[0030] The gas ejection direction of the blowing head 9 is parallel to the edge line of the corner. The blowing head 9 is installed above the contact between the material and the drop hopper. The blowing head does not contact the material to avoid affecting the material operation. A hole for the blowing head 9 to pass through is opened at the angle between the side plates 81. The blowing head 9 passes through the side plates 81, and the direction of the blowing head 9 is adjusted, and the blowing head 9 is welded to the hole opened at the angle.

[0031] The cross section of the conical drop hopper 8 is an inverted cone that is wide at the top and narrow at the bottom. The conical drop hopper 8 is fixedly installed by four side plates 81 .

[0032] A mounting base plate 7 is provided on one side of the vibrator 6, and the vibrator 6 is fixedly mounted on the side wall of the conical drop hopper 8 through the mounting base plate 7. The mounting base plate 7 is fully welded to the outer side of the drop hopper, and the vibrator 6 and the mounting base plate 7 are connected by bolts.

[0033] The vibrator 6 is respectively mounted on the front side plate 81 and the side plates 81 on both sides of the conical drop hopper 8 .

[0034] The conical drop hopper 8 is made of stainless steel, which has high strength and strong corrosion resistance and can ensure a long service life in a vibration environment.

[0035] The device has three working modes: manual control mode, automatic intermittent operation mode, and automatic detection operation mode;

[0036] When the operator is in manual control mode, if he finds that the material accumulated on the inner wall of the hopper may cause blockage, he can manually control to open the first solenoid valve 5 and the second solenoid valve 10 to clear the material accumulated on the inner wall of the conical hopper 8.

[0037] When running in the automatic intermittent operation mode, the program setting automatically controls the opening of the first solenoid valve 5 and the second solenoid valve 10 at intervals to clean up the materials accumulated on the inner wall of the conical drop hopper 8. The program setting for controlling the operation of the first solenoid valve 5 and the second solenoid valve 10 is easy to implement in the prior art.

[0038] When running in automatic detection mode, an existing opposing photoelectric switch can be set in the conical drop hopper 8 through program setting. The opposing photoelectric switch measures the material status of the metering tube below the drop hopper. When the opposing photoelectric switch is blocked, the first solenoid valve 5 and the second solenoid valve 10 are automatically controlled to open to clean up the material accumulated on the inner wall of the conical drop hopper 8. The program setting of controlling the operation of the first solenoid valve 5 and the second solenoid valve 10 according to the status of the opposing photoelectric switch is easy to achieve with the existing technology.

[0039] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A device for preventing material blocking in a hopper, characterized in that: It includes a conical drop hopper, a vibrator and a blowing head. Several vibrators are installed on the outer wall of the conical drop hopper. The blowing heads are installed on the inner side of the conical drop hopper and on four corners. The vibrator is connected to the gas source bottle through a first air pressure branch, and the blowing head is connected to the gas source bottle through a second air pressure branch.

2. The device for preventing material blocking in a hopper according to claim 1, characterized in that: The first air pressure branch includes a manual ball valve, a pressure reducing valve, a pressure gauge and a first solenoid valve. The air outlet end of the gas source bottle is connected to the manual ball valve, the air outlet end of the manual ball valve is connected to the pressure reducing valve, the air outlet end of the pressure reducing valve is connected to the first solenoid valve, a pressure gauge is arranged between the pressure reducing valve and the first solenoid valve, and the air outlet end of the first solenoid valve is connected to a vibrator.

3. The device for preventing material blocking in a hopper according to claim 2, characterized in that: The air outlet end of the first solenoid valve is connected to the vibrator through three air pressure bypasses respectively.

4. The device for preventing material blocking in a hopper according to claim 1, characterized in that: The second air pressure branch includes a manual ball valve, a pressure reducing valve, a pressure gauge and a second solenoid valve. The air outlet end of the gas source bottle is connected to the manual ball valve, and the air outlet end of the manual ball valve is connected to the pressure reducing valve. A pressure gauge is arranged between the pressure reducing valve and the second solenoid valve. The air outlet end of the pressure reducing valve is connected to two second solenoid valves, and the air outlet end of the second solenoid valve is connected to the blowing head.

5. The device for preventing material blocking in a hopper according to claim 4, characterized in that: The air outlet end of each of the second solenoid valves is communicated with the blowing head through two air pressure bypasses.

6. The device for preventing material blocking in a hopper according to claim 1, characterized in that: The gas ejection direction of the blowing head is parallel to the edge line of the corner.

7. The device for preventing material blocking in a hopper according to claim 1, characterized in that: The conical drop hopper has a cross section of an inverted cone that is wide at the top and narrow at the bottom. The conical drop hopper is fixedly installed by four side plates.

8. The device for preventing material blocking in a hopper according to claim 1, characterized in that: A mounting base plate is arranged on one side of the vibrator, and the vibrator is fixedly mounted on the side wall of the conical drop hopper through the mounting base plate.

9. The device for preventing material blocking in a hopper according to claim 1, characterized in that: The vibrators are respectively installed on the front side plate and the side plates on both sides of the conical drop hopper.

10. The device for preventing material blocking in a hopper according to claim 1, characterized in that: The conical drop hopper is made of stainless steel.

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