Nozzle device

Abstract

The utility model belongs to the technical field of cigarette manufacturing, and discloses a nozzle device. The device comprises an adjusting pipe and a conveying pipe, the adjusting pipe is screwed in the conveying pipe, a high-pressure cavity is defined between the adjusting pipe and the conveying pipe, an air hole is formed in the outer wall of the conveying pipe and communicated with the high-pressure cavity, the air hole is further communicated with an air source, and an annular gap is formed between the end of the conveying pipe and the inner wall of the conveying pipe. The high-pressure cavity communicates with a second main body cavity in the conveying pipe through the annular gap, a first main body cavity is formed in the adjusting pipe, and the first main body cavity communicates with the second main body cavity; the problems that in the prior art, a gasket in a nozzle needs to be disassembled and assembled to adjust an annular gap, and working efficiency is reduced are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cigarette manufacturing technical field especially relates to a nozzle device. BACKGROUND

[0002] The filter stick of cigarette is made by tow band, the high pressure air nozzle of filter stick forming machine usually utilizes the principle of venturi to process and transport tow band, the function of filter stick forming machine has two: one is to collect and deliver tow band, the tow band that AF opening machine has opened is transported to KDF forming machine, two is to blow and scatter again the relatively consolidated tow band after applying triacetin, and rearrange, so that the tow band is further fluffy, and the adhesion point of triacetin is increased, so that the tow band can present the net structure of crisscross as much as possible, the tow band filling is more uniform, and the filter stick made of tow band obtains higher and more stable pressure drop.

[0003] The high pressure air nozzle of ZL29 forming machine can complete the function of the above-mentioned filter stick forming machine, the middle part of the nozzle is formed with a tow band pipe, one end of the tow band pipe is formed with an annular table in the circumferential direction, an adjusting piece is installed on the annular table, an annular gap is formed between the adjusting piece and the annular table, and the inside of the adjusting piece and the annular table form a high pressure gas cavity, the high pressure gas cavity is communicated with the tow band channel through the annular gap, and the high pressure gas cavity is externally connected with a compressed air pipeline, by changing the thickness of the gasket between the adjusting piece and the annular table, the annular gap can be adjusted, and the blow-off effect of the high pressure gas after passing through the annular gap can be changed, but when adjusting, the whole needs to be disassembled to replace the gasket, the disassembly and assembly are relatively complex, the working efficiency is reduced, and the compressed air pipeline is externally connected with one side of the high pressure gas cavity, so that the gas pressure distribution in the annular high pressure gas cavity is not uniform, the gas with different pressures passes through the annular gap and acts on the tow band, so that the opening and blow-off effect of the tow band is different, the pressure drop effect of the finally made filter stick is inconsistent, and the consistency of the product is reduced. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a nozzle device, and solves the problem that the annular gap needs to be adjusted by disassembling and assembling the gasket in the nozzle in the prior art, and reduces the working efficiency.

[0005] To achieve the purpose, the utility model discloses the following technical scheme: the utility model provides a nozzle device, including adjusting pipe and conveying pipe, the adjusting pipe is screwed in conveying pipe, the adjusting pipe with the high pressure chamber is surrounded between conveying pipe, the outer wall of conveying pipe is provided with air hole, the air hole with high pressure chamber intercommunication, the air hole still intercommunication with gas source, the end of conveying pipe and the inner wall of conveying pipe form annular gap, the high pressure chamber is communicated with the second main body cavity in conveying pipe through annular gap, the first main body cavity is formed in the adjusting pipe, the first main body cavity with second main body cavity intercommunication.

[0006] As preferably, one end of the adjusting pipe is provided with a first inclined surface, the first inclined surface is conical, the conveying pipe is provided with a second inclined surface, the second inclined surface is conical, the first inclined surface and the second inclined surface form the high pressure chamber.

[0007] As preferably, the outer wall of the conveying pipe is provided with at least two groups of air holes, and the air holes are distributed at equal intervals.

[0008] As preferably, a gas pipe is inserted into the air hole, the gas pipe is communicated with a pipe distributor, and the pipe distributor is communicated with a gas source.

[0009] As preferably, the pipe distributor is connected with the gas source through a gas cylinder, and the gas cylinder stores high-pressure gas.

[0010] As preferably, a scale line is arranged on the outer wall of the adjusting pipe, and a reference line is arranged on the inner wall of the conveying pipe.

[0011] As preferably, the nozzle device further comprises a mounting bracket, the mounting bracket is connected with the conveying pipe through a support, first and second rib plates are arranged on the mounting bracket, the first and second rib plates are perpendicular to each other, and fixing holes are arranged on the first and second rib plates, respectively.

[0012] As preferably, the support is fixed on the conveying pipe through a screw, a first mounting hole is further arranged on the support, the first mounting hole is long strip-shaped, and the length direction of the first mounting hole is parallel to the radial direction of the conveying pipe.

[0013] As preferably, the mounting bracket further comprises an optical axis, first and second fixing blocks, the both ends of the optical axis are inserted into the first and second fixing blocks, a first screw hole is arranged on the first fixing block, a second screw hole is arranged on the second fixing block, a fixing stud is screwed into the first and second screw holes, the support is mounted on the first fixing block, the fixing stud abuts against the optical axis, and the first and second rib plates are arranged on the second fixing block.

[0014] As preferred, the outer wall of the conveying pipe is provided with a tightening screw hole, a tightening stud is screwed in the tightening screw hole, and the tightening stud abuts against the adjusting pipe.

[0015] Beneficial effects: high-pressure gas enters the second main cavity along the annular gap, forming a "Venturi" effect, enabling the filament bundle to be conveyed from the first main cavity to the second main cavity, when the size of the annular gap needs to be adjusted, the adjusting pipe is directly rotated, the adjusting pipe rotates in the conveying pipe, the relative position between the adjusting pipe and the conveying pipe is changed, at this time, the size of the annular gap is changed, the disassembly and assembly time is saved, and the adjusting efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the nozzle device main body of the utility model;

[0017] Figure 2 is the conveying pipe sectional view of the utility model;

[0018] Figure 3 is the gas source connection schematic view of the utility model;

[0019] Figure 4 is the nozzle structure schematic view of the present ZL29 forming machine.

[0020] In the drawing: 1, adjusting pipe;11, first main cavity;12, first inclined surface;13, scale line;2, conveying pipe;21, second main cavity;22, second inclined surface;23, reference line;3, high-pressure cavity;4, annular gap;5, air hole;6, gas source;7, air pipe;8, branch pipe device;9, air cylinder;10, mounting bracket;101, optical axis;102, first fixed block;103, second fixed block;20, support;201, first mounting hole;30, first rib plate;40, second rib plate;50, fixed hole;60, tightening stud. DETAILED DESCRIPTION

[0021] The utility model will be further explained in detail below in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, and not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawing, not all structures.

[0022] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication or two elements of the interaction relationship. For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according of the specific circumstances.

[0023] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but contact through the additional feature between them. Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature. The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0024] In the description of the embodiment, the terms "on", "under", "right", etc. orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, just for the convenience of description and simplification operation, and not indicate or imply that the device or element referred to must have a particular orientation, be configured and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0025] Under the prior art, the size of the annular gap can directly affect the pressure drop stability of the tow made filter rod, and the size of the annular gap also affects the stability of the equipment operation, if the pressure and flow of the nozzle are too small, the filter rod may be shrunk, the pressure drop is reduced, and serious silk bonding may also occur, which is also easy to cause silk falling and the appearance of "bamboo joint rod" (the bamboo joint rod can be regarded as a kind of embodiment of serious pressure drop fluctuation), which is easy to cause equipment downtime;If the pressure and flow of the nozzle air flow are too large, the filter rod weight and pressure drop may be increased, and serious silk may be blown off, the silk rod yield may be reduced, and the pressure drop may be unstable, the flying flower may be too much, and the silk may be broken and the machine may be stopped, so it is necessary to repeatedly adjust the size of the annular gap during production, such as Figure 4 The high-pressure air nozzle of the current ZL29 forming machine is shown in the figure, and the thickness of the gasket is adjusted during adjustment, so that the gap between the annular table and the adjusting part can be changed, but during the adjustment process, the nozzle needs to be disassembled, which is time-consuming, and the pressure in the annular gap is higher near the compressed air pipeline, and the pressure is lower away from the compressed air pipeline.

[0026] To solve the above problems, as shown in Figures 1 to 3 The utility model provides a nozzle device, the nozzle of the utility model is installed on the equipment, including adjusting pipe 1 and conveying pipe 2, adjusting pipe 1 is screwed in conveying pipe 2, and high pressure chamber 3 is surrounded between adjusting pipe 1 and conveying pipe 2, and the outer wall of conveying pipe 2 is provided with air hole 5, air hole 5 communicates with high pressure chamber 3, air hole 5 also communicates with gas source 6, and the end of conveying pipe 2 and the inner wall of conveying pipe 2 form annular gap 4, high pressure chamber 3 communicates with the second main cavity 21 in conveying pipe 2 through annular gap 4, and the first main cavity 11 is formed in adjusting pipe 1, and the first main cavity 11 communicates with the second main cavity 21. Wherein the first main cavity 11 is in rapid contraction state towards the direction of the second main cavity 21, and the second main cavity 21 is in slow diffusion state, so that the nozzle device has higher jet coefficient and higher jet performance.

[0027] The tow enters into conveying pipe 2 along adjusting pipe 1, passes through the first main cavity 11 and the second main cavity 21 in turn, and the bottom of adjusting pipe 1 and the inclined surface of the inner wall of conveying pipe 2 are provided with high pressure chamber 3. Since high pressure chamber 3 communicates with the second main cavity 21 through annular gap 4, "venturi" effect can be formed, so that the tow can be blown and scattered to be more fluffy, and a net structure is reformed, so that the filter rod obtains stable pressure drop. When it is necessary to adjust annular gap 4 for different tows, adjusting pipe 1 is directly rotated, so that adjusting pipe 1 rotates in conveying pipe 2, and then the position between adjusting pipe 1 and conveying pipe 2 can be changed. The gap between the inner wall of conveying pipe 2 and adjusting pipe 1 is changed, so that the size of annular gap 4 can be directly changed, the flow and pressure of high pressure gas flowing into the second main cavity 21 can be changed, the adjusting step can be saved, the nozzle device does not need to be disassembled, and the installation efficiency is improved.

[0028] One end of adjusting pipe 1 is provided with first inclined surface 12, and first inclined surface 12 is conical. The second inclined surface 22 is arranged in conveying pipe 2, and second inclined surface 22 is conical. High pressure chamber 3 is surrounded between first inclined surface 12 and second inclined surface 22.

[0029] Since the inclination angles of first inclined surface 12 and second inclined surface 22 are different, high pressure chamber 3 is formed between first inclined surface 12 and second inclined surface 22. The gap between first inclined surface 12 and second inclined surface 22 on one side of annular gap 4 is close, so that "venturi" effect can be formed. The tow is moved by gas, and first inclined surface 12 and second inclined surface 22 surround a horn-like area, so that high pressure gas is collected at one end of the horn-like area and sprayed out, and the efficiency of "venturi" effect is higher.

[0030] The utility model discloses a conveying pipe 2 outer wall sets up at least two groups of air hole 5, air hole 5 equal interval distribution, the utility model installs six groups of air hole 5, equal interval distribution in the circumference of conveying pipe 2, like this can make the gas pressure of all areas in high pressure chamber 3 close, make the effect of the dispersion of the filament more uniform, and make the pressure drop effect of filter rod made of the filament better, make the dispersion effect of the filament in the second main body cavity 21 same, improve the consistency of product.

[0031] The air pipe 7 is inserted on the air hole 5, the air pipe 7 is communicated with the pipe distributor 8, the pipe distributor 8 is communicated with the gas source 6, the pipe distributor 8 can be connected with multiple air pipes 7 simultaneously, the high-pressure gas from the gas source 6 enters the different air pipes 7 simultaneously and is delivered to the high pressure chamber 3, the gas pressure of each position in the high pressure chamber 3 is closer, and the dispersion effect of the wire bundle is better.

[0032] The pipe distributor 8 is connected with the gas source 6 through the air cylinder 9, the air cylinder 9 stores high-pressure gas, when the pressure of the gas source 6 is insufficient, the gas in the air cylinder 9 can temporarily provide high-pressure gas to the pipe distributor 8, the gas pressure in the high pressure chamber 3 can be avoided from being insufficient, and the nozzle device can maintain the working state for a long time.

[0033] The outer wall of the adjusting pipe 1 is provided with a scale line 13 in the circumferential direction, and the inner wall of the conveying pipe 2 is provided with a reference line 23. The scale line 13 with 0 on the adjusting pipe 1 coincides with the reference line 23, the angle of rotation of the adjusting pipe 1 can be judged by the reference line 23 during the rotation process, and then the size of the annular gap 4 is judged intuitively, after adjusting to the specified position, a tightening screw hole is formed in the outer wall of the conveying pipe 2, a tightening stud 60 is screwed in the tightening screw hole, the tightening stud 60 abuts against the adjusting pipe 1, and the adjusting pipe 1 is fixed through the tightening stud 60.

[0034] The nozzle device also includes a mounting bracket 10, the mounting bracket 10 is connected with the conveying pipe 2 through a support 20, the mounting bracket 10 is provided with a first rib plate 30 and a second rib plate 40, the first rib plate 30 and the second rib plate 40 are perpendicular to each other, and the first rib plate 30 and the second rib plate 40 are respectively provided with a fixing hole 50, the fixing hole 50 is in a strip shape, the mounting bracket 10 can be installed between the wedge-shaped groove wheel and the high-pressure air nozzle through the fixing hole 50, the idle area of the equipment is utilized, and the normal operation of other devices is not affected, the mounting bracket 10 is fixed through the fixing hole 50 on the first rib plate 30 and the second rib plate 40, and the strip-shaped fixing hole 50 facilitates searching for the installation position on the equipment.

[0035] The support 20 is fixed on the conveying pipe 2 by screws, and a first mounting hole 201 is further arranged on the support 20, the first mounting hole 201 is in a strip shape, and the length direction of the first mounting hole 201 is radially parallel to the conveying pipe 2. Through the first mounting hole 201, the position of the conveying pipe 2 can be adjusted along the length direction of the first mounting hole 201, the nozzle device is more flexible to adjust, and different processing environments can be adapted.

[0036] The mounting frame 10 further comprises an optical axis 101, a first fixed block 102 and a second fixed block 103, both ends of the optical axis 101 are inserted into the first fixed block 102 and the second fixed block 103, a first screw hole is arranged on the first fixed block 102, a second screw hole is arranged on the second fixed block 103, a fixing stud is screwed into the first screw hole and the second screw hole and finally abuts against the optical axis 101, and finally the locking of the mounting frame 10 is realized. The support 20 is mounted on the first fixed block 102, and the first rib plate 30 and the second rib plate 40 are arranged on the second fixed block 103, wherein the length direction of the first rib plate 30 and the length direction of the second rib plate 40 are opposite to the axis of the optical axis 101, the first fixed block 102 can slide on the optical axis 101, and the mounting position of the second fixed block 103 is adjusted at the same time, so that the conveying pipe 2 on the first fixed block can be freely adjusted in three-dimensional space, after the second fixed block 103 is fixed by the first rib plate 30 and the second rib plate 40, the other end of the optical axis 101 is fixed to the conveying pipe 2, the optical axis 101 is rotated in the second fixed block 103, the spray angle of the nozzle device can be adjusted, finally the fixing stud is locked, the fixation of the second fixed block 103 and the optical axis 101 is realized, and the nozzle device can always face the required angle.

[0037] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, all the embodiments need not and cannot be exhausted. Any modification, equivalent replacement and improvement made in the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A nozzle device, characterized by The utility model provides a nozzle device, including the adjusting pipe (1) and the delivery pipe (2), the adjusting pipe (1) is screwed in the delivery pipe (2), the adjusting pipe (1) with the delivery pipe (2) between the high pressure cavity (3) is surrounded, the delivery pipe (2) outer wall is provided with air hole (5), air hole (5) with high pressure cavity (3) communication, air hole (5) still with gas source (6) communication, the delivery pipe (2) end with the delivery pipe (2) inner wall forms annular gap (4), high pressure cavity (3) passes through annular gap (4) with the second main cavity (21) in the delivery pipe (2) communication, the adjusting pipe (1) is formed with first main cavity (11), first main cavity (11) with the second main cavity (21) communication.

2. The nozzle device of claim 1, wherein, One end of the adjusting pipe (1) is provided with a first inclined surface (12), the first inclined surface (12) is conical, the second inclined surface (22) is provided in the delivery pipe (2), the second inclined surface (22) is conical, the first inclined surface (12) and the second inclined surface (22) form the high pressure cavity (3) between them.

3. The nozzle device of claim 1, wherein, The outer wall of the delivery pipe (2) is provided with at least two groups of air holes (5), and the air holes (5) are equally spaced.

4. The nozzle device of claim 3, wherein The air pipe (7) is inserted into the air hole (5), the air pipe (7) is communicated with the pipe distributor (8), and the pipe distributor (8) is communicated with the gas source (6).

5. The nozzle device of claim 4, wherein, The pipe distributor (8) and the gas source (6) are connected through the air cylinder (9), and the air cylinder (9) stores high-pressure gas.

6. The nozzle apparatus of claim 1, wherein, The outer wall of the adjusting pipe (1) is provided with a scale line (13), and the inner wall of the delivery pipe (2) is provided with a reference line (23).

7. The nozzle apparatus of claim 1, wherein, The nozzle device further comprises a mounting bracket (10), the mounting bracket (10) is connected with the delivery pipe (2) through a support (20), the mounting bracket (10) is provided with a first rib plate (30) and a second rib plate (40), the first rib plate (30) and the second rib plate (40) are perpendicular to each other, and the first rib plate (30) and the second rib plate (40) are respectively provided with a fixed hole (50), the fixed hole (50) is long strip-shaped.

8. The nozzle device of claim 7, wherein, The support (20) is fixed on the delivery pipe (2) through screws, and the support (20) is further provided with a first mounting hole (201), the first mounting hole (201) is long strip-shaped, the length direction of the first mounting hole (201) is parallel to the radial direction of the delivery pipe (2), and a bolt is screwed in the mounting bracket (10) through the first mounting hole (201).

9. The nozzle apparatus of claim 7, wherein, The mounting frame (10) further comprises an optical axis (101), a first fixing block (102) and a second fixing block (103), both ends of the optical axis (101) are inserted into the first fixing block (102) and the second fixing block (103), a first screw hole is formed in the first fixing block (102), a second screw hole is formed in the second fixing block (103), a fixing stud is screwed in the first screw hole and the second screw hole, the fixing stud is in abutment with the optical axis (101), the support (20) is mounted on the first fixing block (102), and the second fixing block (103) is provided with a first rib plate (30) and a second rib plate (40).

10. The nozzle apparatus of claim 1, wherein, The conveying pipe (2) is provided with a tightening screw hole in the outer wall, a tightening stud (60) is screwed in the tightening screw hole, and the tightening stud (60) is in abutment with the adjusting pipe (1).

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