Filter stick blowback unblocking device

Abstract

The utility model provides a filter stick blowback unblocking device. The filter stick blowback unblocking device is arranged between a transmitter and a receiver, the transmitter and the receiver are communicated through a conveying pipe, the filter stick blowback unblocking device comprises an air holding device, a pressure release valve and an unblocking device which are sequentially arranged in the moving direction of a filter stick, and the air holding device and the unblocking device are arranged at the two ends of the conveying pipe respectively. The cleaning and blowing device is used for controlling opening and closing of the end of the conveying pipe, the cleaning and blowing device has a conveying state and a cleaning and blowing state, in the conveying state, the cleaning and blowing device communicates with the conveying pipe and the receiver, the air holding device communicates with the conveying pipe and the transmitter, and compressed air is led to the receiver through the transmitter so as to drive the filter stick to move; and in the blowing state, the blowing device separates the conveying pipe from the receiver, the air holding device separates the conveying pipe from the transmitter, and compressed air is led to the transmitter from the receiver until the pressure in the conveying pipe reaches a set value.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette production equipment, in particular to a filter rod back-blowing and clearing device. Background Art

[0002] In a tobacco factory, cigarette filter rods are transported from the upstream unit to the downstream unit through a transmitter and a receiver. The transmitter and the receiver are connected by a hose, and compressed gas is introduced into the hose. The filter rod moves in the hose under the action of the compressed air, and moves from the transmitter to the receiver. The hose is set according to the space equipment in the tobacco factory. At the corner, the filter rod is easy to be blocked in the hose. The traditional method is to manually disassemble the hose to clear the blockage, but the hose is generally set at a high altitude or on the steel grid of the workshop. Manual climbing to clean it poses a safety hazard.

[0003] Public document CN212314785U discloses a cleaning device for a rod-shaped material conveying pipeline, including a back-blowing valve, a high-pressure gas source and a control device, wherein the back-blowing valve includes a valve body and a valve core, wherein the valve core has at least two working positions in the valve body, and the valve core is controlled by a solenoid valve to switch between at least two working positions; in the first working position, the conveying passage of the back-blowing valve is connected; in the second position, the back-blowing passage of the back-blowing valve is connected; the high-pressure gas source is connected to the back-blowing passage inlet on the valve body, and the control device controls the state of the solenoid valve. The utility model dredges the pipeline by back-blowing twice, but because it is reverse blowing, if the inside of the pipeline is blocked, the filter rod may be blocked again during the movement of the reverse blowing, and the clearing effect is not good. Utility Model Content

[0004] The purpose of the utility model is to provide a filter rod back-blowing and blockage-clearing device in view of the above-mentioned deficiencies in the prior art.

[0005] The utility model proposes a filter rod backblowing and clearing device, which is arranged between a transmitter and a receiver. The transmitter and the receiver are connected through a delivery pipe, and the device comprises a holding device, a pressure relief valve and a cleaning device which are arranged in sequence along the moving direction of the filter rod. The holding device and the cleaning device are respectively arranged at both ends of the delivery pipe, and are respectively used to control the opening and closing of the ends of the delivery pipe. The cleaning device has a delivery state and a cleaning state. In the delivery state, the cleaning device connects the delivery pipe with the receiver, and the holding device connects the delivery pipe with the transmitter, and compressed air is passed from the transmitter to the receiver to drive the filter rod to move; in the cleaning state, the cleaning device separates the delivery pipe from the receiver, and the holding device separates the delivery pipe from the transmitter, and compressed air is passed from the receiver to the transmitter until the pressure in the delivery pipe reaches a set value.

[0006] A more optimal technical solution of the utility model: in the purge state, the pressure setting value range in the delivery pipe is 0.8MPa-1.0MPa.

[0007] A better technical solution of the utility model: the breath-holding device includes a shell and a valve arranged in the shell, a movable channel is arranged in the shell, the movable channel connects the delivery pipe and the transmitter, the valve is arranged in the movable channel, and in the purge state, the valve is closed.

[0008] A better technical solution of the utility model is as follows: a hose is arranged at the end of the breath-holding device, a quick connector is arranged on the hose, and the breath-holding device is connected to the transmitter via the quick connector.

[0009] A better technical solution of the utility model also includes a blockage detection device, wherein two blockage detection devices are respectively arranged on both sides of the pressure relief valve, close to the cleaning device and the breath holding device respectively.

[0010] A better technical solution of the utility model: the blockage detection device includes a base, a photoelectric switch arranged on the base, a detection channel is arranged inside the base, the detection channel is connected to the delivery pipe, a detection hole is arranged on the side wall of the detection channel, and the photoelectric switch is arranged corresponding to the detection hole.

[0011] The better technical solution of the utility model is as follows: the cleaning device comprises a valve body and a valve core, a delivery channel and a back-blowing channel are arranged in the valve core, and the valve core can be driven to move in the valve body so that the delivery channel is connected to the delivery pipe or the back-blowing channel is connected to the delivery pipe.

[0012] The better technical solution of the utility model is as follows: the first air inlet and the second air inlet are arranged on the valve body, the second air inlet is connected to the back-blowing channel, in the conveying state, the first air inlet is ventilated, and the conveying channel is connected to the conveying pipe; in the cleaning state, the second air inlet is ventilated, and the back-blowing channel is connected to the conveying pipe.

[0013] A more optimal technical solution of the utility model is that the pressure relief valve is arranged close to the cleaning and blowing device.

[0014] A better technical solution of the utility model is as follows: the pressure relief valve is 10m-15m away from the cleaning device.

[0015] The utility model provides a filter rod back-blowing and blockage clearing device with the following beneficial effects: the solution provided by the utility model is to set a gas-holding device on the delivery pipe, which closes the delivery pipe during the back-blowing and blockage clearing process, fills the delivery pipe with gas, and increases the pressure in the delivery pipe. The gas-holding device is used to increase the gas-holding process of the delivery pipe during the process of cleaning the filter rod, so that the pressure in the delivery pipe is increased. When the pressure in the delivery pipe reaches the set value, the gas-holding device is turned on, and the blocked filter rod is discharged from the delivery pipe under the action of pressure, and the cleaning effect is good; at the same time, the device of the application does not need to change the existing pipeline layout, and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments of the utility model and are used together with the description to explain the principles of the utility model. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the utility model, rather than all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the installation of an embodiment of the utility model.

[0018] Figure 2 It is a cross-sectional view of the cleaning and blowing device in the embodiment of the utility model in the conveying state.

[0019] Figure 3 It is a cross-sectional view of the cleaning and blowing device in the embodiment of the utility model in the cleaning and blowing state.

[0020] Figure 4 It is a structural view of the breath-holding device in an embodiment of the utility model.

[0021] Figure 5 This is an exploded view of the breath-holding device in an embodiment of the utility model.

[0022] Figure 6 It is a structural view of the blockage detection device in the embodiment of the utility model.

[0023] In the figure: 10, transmitter; 11, filter rod; 20, receiver; 30, delivery pipe; 40, control system; 50, breath-holding device; 51, shell; 511, moving channel; 52, valve; 53, hose; 54, quick connector; 60, pressure relief valve; 70, cleaning device; 71, valve body; 711, first air inlet; 712, second air inlet; 713, connecting port; 72, valve core; 721, delivery channel; 722, back-blowing channel; 80, blockage detection device; 81, base; 82, photoelectric switch; 811, detection channel; 812, detection hole. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment 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 making creative work are within the scope of protection of the utility model. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0025] See also Figure 1 A filter rod back-blowing and clearing device is provided between the transmitter 10 and the receiver 20 to clear the filter rod 11 blocked in the delivery pipe 30; along the normal moving direction of the filter rod 11, a holding device 50, a pressure relief valve 60 and a clearing device 70 are provided in sequence, the holding device 50 and the clearing device 70 are respectively provided at both ends of the delivery pipe 30, and are respectively used to connect the delivery pipe 30 and the transmitter 10, and the delivery pipe 30 and the receiver 20, the holding device 50 and the clearing device 70 can control the connection and closing of the delivery pipe 30; the clearing device 70 has a clearing state and a delivery state, in which the holding device 50 is connected to the delivery pipe 30. The delivery pipe 30 and the transmitter 10 are connected, the cleaning device 70 is connected to the delivery pipe 30 and the receiver 20, and the compressed air is passed from the transmitter 10 to the receiver 20 to drive the filter rod 11 to move from the transmitter 10 to the receiver 20; in the cleaning state, the cleaning device 70 separates the delivery pipe 30 and the receiver 20, and the air-holding device 50 separates the delivery pipe 30 and the transmitter 10, and the compressed air is passed from the receiver 20 to the transmitter 10, and the compressed air is continuously ventilated until the pressure value in the delivery pipe 30 reaches the set value, after which the air-holding device 50 is opened, and the filter rod 11 blocked in the delivery pipe 30 is pressed out and discharged by the air-holding device 50.

[0026] The blowing device 70 is as follows Figures 2 to 3 As shown, the direction of the arrow in the figure is the direction of compressed gas introduction. It is arranged at one end of the delivery pipe 30 close to the receiver 20, including a valve body 71 and a valve core 72 arranged in the valve body 71. The valve core 72 is provided with a delivery channel 721 and a back-blowing channel 722. When the cleaning device 70 is in the delivery state, the delivery channel 721 is connected with the delivery pipe 30, and the filter rod 11 in the delivery pipe 30 enters the receiver 20 through the delivery channel 721; when the cleaning device 70 is in the cleaning state, the back-blowing channel 722 is connected with the delivery pipe 30, the delivery pipe 30 and the receiver 20 are separated, and compressed air is introduced into the back-blowing channel 722 to drive the filter rod 11 blocked in the delivery pipe 30 to move in the opposite direction and be discharged.

[0027] In this embodiment, the valve body 71 is moved by pneumatic drive. Specifically, a cavity is provided in the valve body 71, and the valve core 72 is arranged in the cavity. Two connecting ports 713, a first air inlet 711 and a second air inlet 712 are provided on the valve body 71. The first air inlet 711 and the second air inlet 712 are both connected to the cavity, and the blowing device connects the receiver 20 and the delivery pipe 30 through the two connecting ports 713. In actual use, only the first air inlet 711 or the second air inlet 712 takes in air; when the first air inlet 711 is ventilated, the valve core 72 is driven to move in the cavity until the valve core 72 abuts against the cavity and the two ends of the delivery channel 721 are respectively connected to the two connecting ports 713. At this time, the blowing device 70 connects the delivery pipe 30 and the receiver 20, and the blowing device 70 is in a delivery state. The filter rod 11 sent by the transmitter 10 can enter the receiver 20 through the blowing device 70; the second air inlet When the port 712 is ventilated, the valve core 72 is driven to move in the reverse direction in the cavity until the valve core 72 abuts against the other end of the cavity, and the two ends of the back-blowing channel 722 are respectively connected to the second air inlet 712 and the connecting port 713 connected to the delivery pipe 30, and the compressed gas introduced from the second air inlet 712 enters the delivery pipe 30 through the back-blowing channel 722. At this time, the receiver 20 is disconnected from the delivery pipe 30, and the cleaning device 70 is in a cleaning state. The filter rod 11 blocked in the delivery pipe 30 is blown out in the reverse direction.

[0028] A pressure relief valve 60 is provided on the delivery pipe 30 to control the pressure in the delivery pipe 30 so as to control the moving speed of the filter rod 11. The moving direction of the filter rod 11 from the transmitter 10 to the receiver 20 is defined as the forward direction, and the moving direction from the receiver 20 to the transmitter 10 is defined as the reverse direction. When the filter rod 11 moves forward, compressed air is introduced from the transmitter 10, and the filter rod 11 is pushed to move in the delivery pipe 30; in order to overcome the movement friction and avoid the filter rod 11 being blocked in the delivery pipe 30, the pressure of the introduced compressed air is high and the filter rod 11 moves quickly; in order to allow the filter rod 11 to smoothly enter the receiver 20 from the delivery pipe 30 and avoid the filter rod 11 moving too fast and colliding at the bend of the delivery pipe 30, resulting in blockage, during the forward movement of the filter rod 11, the moving speed of the filter rod 11 into the receiver 20 can be adjusted by the pressure relief valve 60. Specifically, the pressure relief valve 60 is arranged close to the receiver 20, and the distance between the pressure relief valve 60 and the cleaning device 70 is about 10m-15m. By adjusting the size of the exhaust port of the pressure relief valve 60, the moving speed of the filter rod 11 when approaching the receiver 20 is reduced. The pressure relief valve 60 is a product in the prior art.

[0029] Breath-holding device 50 Figure 4 and Figure 5As shown, it is arranged at one end of the delivery pipe 30 close to the transmitter 10, including a shell 51 and a valve 52 arranged in the shell 51, a movable channel 511 is arranged in the shell 51, and both ends of the movable channel 511 connect the delivery pipe 30 and the transmitter 10. The valve 52 is arranged in the movable channel 511. In the delivery state, the valve 52 is opened, the movable channel 511 connects the delivery pipe 30 and the transmitter 10, and the filter rod 11 moves forward; in the cleaning state, the valve 52 is closed, the delivery pipe 30 is disconnected from the transmitter 10, and compressed air is continuously introduced into the delivery pipe 30 by the cleaning device 70 until the pressure in the delivery pipe 30 reaches the set value, and the valve 52 is opened, and the filter rod 11 blocked in the delivery pipe 30 is squeezed out to achieve cleaning.

[0030] In this embodiment, the valve 52 is a pneumatic valve 52, which is driven by a cylinder to be opened or closed. A hose 53 is provided at one end of the air-holding device 50 connected to the transmitter 10, and quick connectors 54 are provided at both ends of the hose 53, which are used to connect the hose 53 to the air-holding device 50 and the hose 53 to the quick connector 54 respectively; through the quick connector 54, the hose 53 and the air-holding device 50 can be quickly disassembled, and the air-tightness test of the air-holding device 50 is performed; in the purge state, the vent valve 52 is continuously closed to the delivery pipe 30 through the second air inlet 712, and the delivery pipe 30 is in the air-holding process until the pressure in the delivery pipe 30 reaches the set value, and the connection between the air-holding device 50 and the transmitter 10 is disconnected through the quick connector 54, and the pressure in the delivery pipe 30 presses out the blocked filter rod 11. It is found through experiments that when the pressure setting value in the delivery pipe 30 is within 0.8MPa-1.0MPa, the filter rod 11 can be discharged smoothly.

[0031] Furthermore, a pressure detection device is provided in the delivery pipe 30 to detect the pressure in the delivery pipe 30 .

[0032] The delivery pipe 30 is also provided with a blockage detection device 80. Considering that the filter rod 11 is more likely to be blocked at the joint, two blockage detection devices 80 are respectively provided on both sides of the pressure relief valve 60, close to the cleaning device 70 and the air holding device 50. The blockage detection device 80 can be used to determine whether the filter rod 11 is blocked in the delivery pipe 30.

[0033] like Figure 6 As shown, the blocking device includes a base 81 and a photoelectric switch 82 arranged on the base 81. A detection channel 811 is arranged in the base 81. The detection channel 811 is connected to the conveying pipe 30. The filter rod 11 can move in the detection channel 811. A detection hole 812 is arranged on the side wall of the detection channel 811. The photoelectric switch 82 is arranged corresponding to the detection hole 812. When the photoelectric switch 82 is blocked, it means that the filter rod 11 is blocked.

[0034] The control system 40 is also included, and the control system 40 is used to control the compressed gas introduced into the purge device 70 and the transmitter 10, the opening and closing of the valve 52, and the opening size of the pressure relief valve 60.

[0035] The working process of this device is:

[0036] When the filter rod 11 is transported normally, the first air inlet 711 is ventilated, the cleaning device 70 is in the conveying state, compressed gas is introduced into the transmitter 10, the valve 52 in the holding device 50 is opened, and the filter rod 11 moves in the conveying pipe 30 under the action of compressed gas, and moves from the transmitter 10 to the receiver 20.

[0037] When the pipeline is blocked, the gas is stopped from entering the transmitter 10, the valve 52 in the air holding device 50 is closed, and the air holding device 50 is separated from the transmitter 10, the second air inlet 712 is ventilated, and the cleaning device 70 is in a cleaning state. The second air inlet 712 continues to ventilate the delivery pipe 30 until 0.8MPa, and then the valve 52 is opened. Under the action of the pressure in the delivery pipe 30, the blocked filter rod 11 is discharged from the air holding device 50, thereby clearing the filter rod 11.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A filter rod back-blowing and clearing device, characterized in that: The filter rod (11) is arranged between a transmitter (10) and a receiver (20), the transmitter (10) and the receiver (20) being connected via a conveying pipe (30), and comprises a holding device (50), a pressure relief valve (60) and a cleaning device (70) which are arranged in sequence along the moving direction of the filter rod (11), the holding device (50) and the cleaning device (70) being arranged at both ends of the conveying pipe (30) and respectively used to control the opening and closing of the ends of the conveying pipe (30), the cleaning device (70) having a conveying state and a cleaning state, wherein in the conveying state, the cleaning device (70) is connected to the conveying state. The conveying pipe (30) and the receiver (20) are connected, the air-holding device (50) is connected to the conveying pipe (30) and the transmitter (10), and compressed air is passed from the transmitter (10) to the receiver (20) to drive the filter rod (11) to move; in the cleaning state, the cleaning device (70) separates the conveying pipe (30) and the receiver (20), the air-holding device (50) separates the conveying pipe (30) and the transmitter (10), and compressed air is passed from the receiver (20) to the transmitter (10) until the pressure in the conveying pipe (30) reaches a set value.

2. A filter rod back-blowing and clearing device according to claim 1, characterized in that: In the purge state, the pressure setting value range in the delivery pipe (30) is 0.8 MPa-1.0 MPa.

3. A filter rod back-blowing and clearing device according to claim 1, characterized in that: The breath-holding device (50) comprises a shell (51) and a valve (52) arranged in the shell (51); a movable channel (511) is arranged in the shell (51); the movable channel (511) connects the delivery pipe (30) and the transmitter (10); the valve (52) is arranged in the movable channel (511); in the purge state, the valve (52) is closed.

4. A filter rod back-blowing and clearing device according to claim 3, characterized in that: A hose (53) is provided at the end of the breath-holding device (50), a quick connector (54) is provided on the hose (53), and the breath-holding device (50) is connected to the transmitter (10) via the quick connector (54).

5. A filter rod back-blowing and clearing device according to claim 1, characterized in that: It also includes a blockage detection device (80), wherein two blockage detection devices (80) are respectively arranged on both sides of the pressure relief valve (60), close to the cleaning device (70) and the breath holding device (50), respectively.

6. A filter rod back-blowing and clearing device according to claim 5, characterized in that: The blockage detection device (80) comprises a base (81), a photoelectric switch (82) arranged on the base (81), a detection channel (811) is arranged inside the base (81), the detection channel (811) is connected to the delivery pipe (30), a detection hole (812) is arranged on a side wall of the detection channel (811), and the photoelectric switch (82) is arranged corresponding to the detection hole (812).

7. A filter rod back-blowing and clearing device according to claim 1, characterized in that: The cleaning and blowing device (70) comprises a valve body (71) and a valve core (72); a delivery channel (721) and a back-blowing channel (722) are arranged in the valve core (72); the valve core (72) can be driven to move in the valve body (71) so that the delivery channel (721) is connected to the delivery pipe (30) or the back-blowing channel (722) is connected to the delivery pipe (30).

8. A filter rod back-blowing and clearing device according to claim 7, characterized in that: The valve body (71) is provided with a first air inlet (711) and a second air inlet (712), the second air inlet (712) being connected to the back-blowing channel (722); in a conveying state, the first air inlet (711) is ventilated, and the conveying channel (721) is connected to the conveying pipe (30); in a purging state, the second air inlet (712) is ventilated, and the back-blowing channel (722) is connected to the conveying pipe (30).

9. A filter rod back-blowing and clearing device according to claim 1, characterized in that: The pressure relief valve (60) is arranged close to the cleaning device (70).

10. A filter rod back-blowing and clearing device according to claim 9, characterized in that: The pressure relief valve (60) is 10m-15m away from the cleaning device (70).

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