Intermittent particle adding device for filter stick

Abstract

A discontinuous particle adding device for a filter stick relates to the technical field of cigarettes and comprises a stock bin (1) and a conveying device, the conveying device is a spiral conveying device comprising a conveying cylinder (2) and a spiral conveying shaft (3), and the part, located in the conveying cylinder (2), of the spiral conveying shaft (3) is made by forming a spiral conveying groove (4) in a cylindrical optical shaft. The width of the conveying groove (4) is smaller than one half of the screw pitch, one end of the spiral conveying shaft (3) extends out of the conveying cylinder (2) to be connected with a driving device, a feeding port (5) is formed in the top end of the input end of the conveying cylinder (2) to be connected with the bottom of the stock bin (1), and the width of the bottom of the feeding port (5) of the conveying cylinder (2) is smaller than one half of the screw pitch of the spiral conveying shaft (3). And the bottom of the output end of the conveying cylinder (2) is provided with a discharge port (6) which is connected with a cigarette tongue device (7) for producing filter sticks. The specific structural design is reasonable, and the production process is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarettes, in particular to a device for discontinuously adding functional particles into a filter rod. Background Art

[0002] There are two basic production processes for particle filter rods used in existing cigarette filters. One involves first producing a single, continuous particle filter rod filled with particles (the particles in this filter rod are excessive for direct filter use), then cutting it into small segments and combining it with an acetate filter rod to create a composite particle filter rod. The other involves using an acetate filter rod or other functional filter rod, arranging several filter rod segments at intervals during the composite process, adding particles into the gaps, and then wrapping the rod with wrapping paper. Both of these processes result in complex cigarette structures and processes, long production cycles, and high manufacturing costs. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide an intermittent particle adding device to meet the production needs of one-piece one-time formed particle filter rods.

[0004] The technical solution of the present invention is: an intermittent particle adding device for filter rods, comprising a silo and a conveying device, wherein the conveying device is a spiral conveying device comprising a conveying cylinder and a spiral conveying shaft, the part of the spiral conveying shaft located in the conveying cylinder is made by opening a spiral conveying groove on a cylindrical optical axis, the width of the conveying groove is less than half the pitch, one end of the spiral conveying shaft extends out of the conveying cylinder and is connected to the driving device, the top end of the input end of the conveying cylinder is provided with a feed port connected to the bottom of the silo, the bottom width of the feed port of the conveying cylinder is less than half the pitch of the spiral conveying shaft, and the bottom end of the output end of the conveying cylinder is provided with a discharge port connected to a cigarette tongue device for producing filter rods.

[0005] The technical effects of this utility model are: reasonable structural design and simple production process can significantly shorten the production cycle and reduce manufacturing costs. The produced particle filter rod has the characteristics of neat and concentrated particles, which are stacked in a fixed position within the filter tip and will not overflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the partial cross-section structure of the present utility model. DETAILED DESCRIPTION

[0007] like Figure 1The present invention discloses an intermittent particle feeding device for filter rods, comprising a silo 1 and a conveying device. The conveying device is a screw conveyor comprising a conveying drum 2 and a screw conveying shaft 3. The portion of the screw conveying shaft 3 located within the conveying drum 2 is formed by forming a spiral conveying groove 4 on a cylindrical axis. The width of the conveying groove 4 is less than half the pitch of the screw, resulting in a spiral conveying shaft with a spiral groove and spiral ridges intertwined with each other. One end of the screw conveying shaft 3 extends beyond the conveying drum 2 and is connected to a drive device. A feed port 5 is provided at the top of the input end of the conveying drum 2 and is connected to the bottom of the silo 1. The bottom width of the feed port 5 of the conveying drum 2 is less than half the pitch of the screw conveying shaft 3. A discharge port 6 is provided at the bottom of the output end of the conveying drum 2 and is connected to a tongue device 7 for producing filter rods. When the screw conveying shaft rotates, when the ridge section rotates below the feed port, the material is blocked by the flat top of the ridge and cannot fall into the conveying drum. When the groove section rotates below the feed port, the material enters the conveying drum and falls into the groove, where it gathers and piles at the bottom. The ridge segments and groove segments travel alternately, thereby forming a stacked and spaced material conveying pattern at the bottom of the conveying cylinder.

[0008] The conveying groove 4 of the spiral conveying shaft 3 is rectangular or trapezoidal.

[0009] A feed control valve 8 is provided at the feed port 5 of the conveying cylinder 2 to control the flow of the material. The feed control valve can be a butterfly valve.

[0010] The feed opening 5 of the conveying cylinder 2 is rectangular.

[0011] The discharge port 6 of the conveying cylinder 2 is a funnel-shaped structure that is wide at the top and narrow at the bottom.

[0012] An adjusting tube 9 is fixed to the bottom of the discharge port 6 of the conveying cylinder 2 by a fastening screw, and the adjusting tube 9 is inserted into the tube cavity of the cigarette tongue device 7. The depth of the cigarette tongue can be adjusted by moving the adjusting tube up and down.

[0013] The spiral conveying shaft 3 is driven by a motor and a reducer.

[0014] The motor controls the rotation of the spiral conveyor shaft. When the non-groove part rotates to the feed port, the feed port is blocked and the particles cannot enter. When the groove part rotates to the feed port, the feed port is unobstructed and the particles fall into the groove under the action of gravity. The grooves and ridges move alternately, thereby achieving intermittent entry of particles. The particles in the grooves are continuously pushed forward as the spiral conveyor shaft rotates, and intermittent discharge of particles is achieved at the discharge port. The spindle-shaped tow separation device is fixed in the cigarette tongue by a vertical rod. When working, the tow behind the vertical rod moves forward and is dispersed to both sides by the spindle-shaped tow separation device. The height of the separation device can be changed by adjusting the height position of the vertical rod, thereby adjusting the position of the particles after addition.

Claims

1. An intermittent particle adding device for a filter rod, comprising a silo (1) and a conveying device, characterized in that: The conveying device is a spiral conveying device comprising a conveying cylinder (2) and a spiral conveying shaft (3). The portion of the spiral conveying shaft (3) located in the conveying cylinder (2) is made by opening a spiral conveying groove (4) on a cylindrical optical axis. The width of the conveying groove (4) is less than half the pitch. One end of the spiral conveying shaft (3) extends out of the conveying cylinder (2) and is connected to a driving device. A feed port (5) is provided at the top of the input end of the conveying cylinder (2) and is connected to the bottom of the silo (1). The bottom width of the feed port (5) of the conveying cylinder (2) is less than half the pitch of the spiral conveying shaft (3). A discharge port (6) is provided at the bottom of the output end of the conveying cylinder (2) and is connected to a cigarette tongue device (7) for producing filter rods.

2. The intermittent particle adding device for a filter rod according to claim 1, characterized in that: The conveying groove (4) of the spiral conveying shaft (3) is rectangular or trapezoidal.

3. The intermittent particle adding device for a filter rod according to claim 1, characterized in that: A feed control valve (8) is provided at the feed port (5) of the conveying cylinder (2).

4. The intermittent particle adding device for a filter rod according to claim 1 or 3, characterized in that: The feed opening (5) of the conveying cylinder (2) is rectangular.

5. The intermittent particle adding device for a filter rod according to claim 1, characterized in that: The discharge port (6) of the conveying cylinder (2) is a funnel-shaped structure that is wide at the top and narrow at the bottom.

6. The intermittent particle adding device for a filter rod according to claim 5, characterized in that: An adjusting tube (9) is fixed to the bottom of the discharge port (6) of the conveying cylinder (2) via a fastening screw, and the adjusting tube (9) is inserted into the tube cavity of the cigarette tongue device (7).

7. The intermittent particle adding device for a filter rod according to claim 1, characterized in that: The spiral conveying shaft (3) is driven by a motor and a reducer.

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