A filter rod forming apparatus and a dehumidifying and dedusting device

By using a dehumidification and dust removal device with water-blocking components and air knives on the filter rod forming machine, the problems of condensate and paper dust accumulation on the smoke gun and cooling strips were solved, improving the production quality and pass rate of filter rods.

CN117356751BActive Publication Date: 2025-12-09HUBEI CHINA TOBACCO INDUSTRY CO LTD +1
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Patent Information

Application Number
CN202311372238.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-10-23
Publication Date
2025-12-09
Estimated Expiration
2043-10-23

AI Technical Summary

Technical Problem

During the processing of filter rod forming machines, the smoke gun and cooling strip are prone to condensation and paper dust accumulation, leading to filter rod quality problems such as excessive circumference and poor roundness.

Method used

A dehumidification and dust removal device, including a water-blocking component and an air knife, is adopted. The water-blocking component absorbs the moisture inside the smoke gun, and the air knife sprays compressed gas to remove condensate and paper dust from the cooling strips and the surface of the smoke gun. The air guide plate is positioned and installed to constrain the airflow path and prevent accumulation.

Benefits of technology

It effectively prevents condensate and paper dust from accumulating on the smoke gun and cooling strip, improves the production quality of filter rods, reduces filter rod weight and circumferential fluctuation, and increases product qualification rate.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a filter rod forming equipment and a dehumidifying and dedusting device. The dehumidifying and dedusting device comprises two groups of cleaning components and two air deflectors. The two groups of cleaning components are used for being filled in two grooves of a smoke gun respectively and being arranged on two sides of a cooling strip. Any cleaning component comprises a water-blocking part capable of absorbing water and an air knife capable of spraying compressed gas. The two air deflectors are arranged in the notches of the two grooves. Any air deflector shields a part of the notch of the corresponding groove, so that the unshielded part of the notch forms a narrow opening through which the compressed gas can flow to the cooling strip. The dehumidifying and dedusting device can be applied to a filter rod forming machine with a smoke gun and a cooling strip. The water-blocking part is used for absorbing water in the smoke gun, and the air knife uses the compressed gas to remove the condensed water and paper dust on the surfaces of the smoke gun and the cooling strip, so that the inside of the smoke gun is dehumidified, the surfaces of the smoke gun and the cooling strip are dehumidified and dedusted, and the problem that the condensed water and paper dust are accumulated on the smoke gun and the cooling strip to affect the quality of filter rods is avoided.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of equipment purification, in particular to a dehumidifying and dedusting device. The present application also relates to a filter rod forming equipment comprising the dehumidifying and dedusting device. BACKGROUND

[0002] The filter rod forming machine is one of the important equipment in the cigarette production process, which is used to realize the filter rod forming process.

[0003] The filter rod forming machine comprises a smoke gun and a cooling strip, and the smoke gun and the cooling strip are adjacently distributed. When the smoke gun performs the smoke gun forming operation on the filter rod semi-product, the cooling strip exchanges heat with the filter rod semi-product, so that the hot melt glue coated on the edge of the paper tape of the filter rod semi-product is rapidly cooled to complete the operation of bonding the filter strip.

[0004] Due to the influence of the working environment and other factors, condensation water is easily generated inside or on the surface of the smoke gun and the cooling strip. In addition, paper powder generated in the filter rod forming process is also gradually accumulated on the surface of the smoke gun and the surface of the cooling strip, which can cause quality problems such as filter rod circumference exceeding the standard and poor roundness, and seriously affect the forming quality of the filter rod. SUMMARY

[0005] The purpose of the present application is to provide a dehumidifying and dedusting device which can conveniently and efficiently dehumidify the inside of the smoke gun and dehumidify and remove dust from the surface of the smoke gun and the surface of the cooling strip, so as to avoid the accumulation of condensation water and paper powder on the smoke gun and the cooling strip and guarantee the production quality of the filter rod. Another purpose of the present application is to provide a filter rod forming equipment comprising the dehumidifying and dedusting device.

[0006] To achieve the above purpose, the present application provides a dehumidifying and dedusting device applied to a filter rod forming machine, comprising:

[0007] Two groups of cleaning components; the two groups of cleaning components are used to be filled in two grooves of the smoke gun respectively and are used to be arranged on both sides of the cooling strip; any one group of cleaning components comprises a water-blocking component capable of absorbing water and an air knife capable of spraying compressed gas;

[0008] Two air deflectors; the two air deflectors are used to be arranged at the notches of the two grooves; any one air deflector shields the local notch of the corresponding groove, so that the unshielded part of the notch forms a narrow opening for the compressed gas to flow to the cooling strip.

[0009] In some embodiments, any one air knife comprises an air guide pipe and an air outlet provided on the air guide pipe; the air outlet of any one air guide pipe is aligned with the narrow opening on the same side and is inclined towards the other air guide pipe.

[0010] In some embodiments, the two air knives are connected to a gas supply device; the gas supply device has a switch circuit used to be connected with the filter rod forming machine.

[0011] In some embodiments, the air supply device comprises, in sequence, an air source, an oil-water separator, a first pressure regulator, a filter, a second pressure regulator, a control valve, and a pressure monitor; the pressure monitor is connected to the air duct; the second pressure regulator has a higher pressure regulation accuracy than the first pressure regulator.

[0012] In some embodiments, the device further comprises a pipe positioning block for fixing the smoke gun; the same end of the two air ducts is clamped in the pipe positioning block.

[0013] In some embodiments, the air baffle is used to shield more than half of the corresponding groove in the width direction of the groove; the diameter of the air duct is greater than the width of the narrow opening.

[0014] In some embodiments, at least part of the pipe wall of any water-blocking member and air duct is assembled to form a shielding part for blocking the corresponding groove; the air outlet and the narrow opening are located on the same side of the shielding part.

[0015] The application also provides a filter rod forming device, which comprises a smoke gun, a cooling strip, and the above-described dehumidifying and dust-removing device; the cooling strip is installed on the surface of the smoke gun; the smoke gun is provided with two grooves extending in the same direction, and the groove opening and the cooling strip are located on the same side of the smoke gun.

[0016] In some embodiments, the smoke gun is provided with a partition plate arranged between the two grooves; the groove opening of the two grooves is arranged on the first surface of the smoke gun, and the partition plate comprises a partition plate outer end portion protruding towards the first surface, and the cooling strip is installed on the partition plate outer end portion.

[0017] In some embodiments, the partition plate outer end portion comprises a top surface and two inclined surfaces; the cooling strip is installed on the top surface; the two inclined surfaces are symmetrically distributed on both sides of the top surface, and any inclined surface extends in the same direction as the air outlet on the same side to guide the compressed gas to flow obliquely to the cooling strip.

[0018] With respect to the above background art, the dehumidifying and dust-removing device provided by the application is applied to a filter rod forming machine, which comprises:

[0019] two groups of cleaning components; the two groups of cleaning components are used to fill in the two grooves of the smoke gun respectively and are arranged on both sides of the cooling strip; any group of cleaning components comprises a water-blocking member capable of absorbing water and an air knife capable of spraying compressed gas;

[0020] two air baffles; the two air baffles are arranged on the groove opening of the two grooves; any air baffle shields part of the groove opening of the corresponding groove, so that the unshielded part of the groove opening forms a narrow opening through which the compressed gas can flow to the cooling strip.

[0021] The dehumidifying and dedusting device dehumidifies and dedusts the filter rod forming machine with a smoke gun and a cooling strip by using a water blocking part and an air knife.

[0022] The water blocking part and the air knife of the dehumidifying and dedusting device are arranged in the groove of the smoke gun, which not only can play the target operation effect of dehumidification and dust removal, but also can reasonably utilize the limited space between the smoke gun and the cooling strip. The air deflector of the dehumidifying and dedusting device is positioned and installed with the water blocking part and the air knife in the groove of the smoke gun, which not only can improve the installation strength of the water blocking part and the air knife in the smoke gun, but also can constrain the blowing path of the air knife to the cooling strip and prevent the floating condensate water and paper powder from entering the groove of the smoke gun, thereby guaranteeing the dehumidification and dust removal effect.

[0023] It can be seen that the dehumidifying and dedusting device can dehumidify the inside of the smoke gun and dehumidify and dedust the surface of the smoke gun and the surface of the cooling strip, avoid the accumulation of condensate water and paper powder on the smoke gun and the cooling strip, reduce the phenomenon of excessive filter rod circumference, and reduce the phenomenon of filter rod weight and circumference fluctuation, thereby solving the problem that the smoke gun and the cooling strip affect the quality of the filter rod due to the accumulation of condensate water and paper powder, and improving the production quality of the filter rod. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0025] Figure 1 The assembly schematic diagram of the dehumidifying and dedusting device and the smoke gun provided by the embodiments of the present application;

[0026] Figure 2 The structure schematic diagram of the dehumidifying and dedusting device provided by the embodiments of the present application;

[0027] Figure 3 The structure schematic diagram of the air knife in the first direction provided by the embodiments of the present application;

[0028] Figure 4 The structure schematic diagram of the air knife in the second direction provided by the embodiments of the present application;

[0029] Figure 5 The structure schematic diagram of the air supply equipment provided by the embodiments of the present application.

[0030] Wherein, 01-smoke gun, 011-groove, 012-baffle, 0121-top surface, 0122-inclined surface, 1-water blocking part, 2-air knife, 21-air duct, 22-air outlet, 3-air guide plate, 4-narrow opening, 5-oil-water separator, 6-first pressure regulator, 7-filter, 8-second pressure regulator, 9-control valve, 10-pressure monitor, 110-pipe positioning block, 120-quick plug air pipe joint. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0033] Please refer to Figures 1 to 5 , Figure 1 The assembly schematic diagram of the dehumidifying and dust removing device and the smoke gun provided by the embodiments of the present application; Figure 2 The structural schematic diagram of the dehumidifying and dust removing device provided by the embodiments of the present application; Figure 3 The structural schematic diagram of the air knife in the first direction provided by the embodiments of the present application; Figure 4 The structural schematic diagram of the air knife in the second direction provided by the embodiments of the present application; Figure 5 The structural schematic diagram of the air supply equipment provided by the embodiments of the present application.

[0034] Please refer to Figure 1 and Figure 2 The present application provides a dehumidifying and dust removing device, which comprises two groups of cleaning components and two air guide plates 3, wherein any one group of cleaning components comprises a water blocking part 1 capable of absorbing water and an air knife 2 capable of spraying compressed gas.

[0035] The dehumidifying and dust removing device can be applied to a filter rod forming machine with a smoke gun 01 and a cooling strip.

[0036] When the dehumidifying and dedusting device is applied to the filter rod making machine, the cleaning components are installed in the smoke gun 01, and the air deflectors 3 are installed between the smoke gun 01 and the cooling strip. For example, two groups of cleaning components are used to fill in the two grooves 011 of the smoke gun 01 respectively, and are used to be arranged on both sides of the cooling strip, and at the same time, two air deflectors 3 are used to be arranged in the slots of the two grooves 011, and any air deflector 3 blocks the local slot of the corresponding groove 011 and exposes the other slots of the groove 011, which makes the unblocked part of the slot of the groove 011 form a narrow opening 4 for the compressed gas to flow to the cooling strip. Of course, the narrow opening 4 can also be regarded as the gap between the air deflector 3 and the slot of the groove 011.

[0037] In this embodiment, the cleaning components are installed in the smoke gun 01, so that the water blocking member 1 arranged in the groove 011 of the smoke gun 01 can absorb the water inside the smoke gun 01, and the air knife 2 arranged in the groove 011 of the smoke gun 01 can spray the compressed gas from the narrow opening 4 to the cooling strip outside the groove 011, so as to realize the use of the compressed gas to take away the condensed water on the surface of the cooling strip and the paper dust on the surfaces of the smoke gun 01 and the cooling strip.

[0038] The water blocking member 1 of the dehumidifying and dedusting device can be specifically provided as a water-absorbing sponge strip, which is used to absorb a small amount of condensed water generated inside the smoke gun 01 and prevent the condensed water from falling. Generally, the smoke gun 01 of a common filter rod making machine is provided with a water blocking member 1, and compared with the prior art, the air knife 2 is used to replace part of the water blocking member, and the air knife 2 and the reduced volume water blocking member 1 are jointly installed in the groove 011, which better meets the requirements of dehumidifying and dedusting operation inside and outside the smoke gun 01.

[0039] The filter rod making machine is used for processing filter rods, and the dehumidifying and dedusting device can blow the condensed water and paper powder to a position away from the smoke gun 01 and the cooling strip, so as to avoid the accumulation of the condensed water and the paper powder on the smoke gun 01 and the cooling strip, reduce the phenomenon of excessive circumference of the filter rod, reduce the phenomenon of weight and circumference fluctuation of the filter rod, and improve the qualified rate of the filter rod.

[0040] In summary, the dehumidifying and dedusting device provided by the application can dehumidify the inside of the cigarette gun 01 and dehumidify and dedust the surface of the cigarette gun 01 and the cooling strip, solve the problem that the condensate water and paper powder accumulated on the cigarette gun 01 and the cooling strip affect the quality of the filter rod, and improve the production quality of the filter rod. The dehumidifying and dedusting device provided by the application dehumidifies and dedusts based on the water blocking part 1 and the air knife 2, and the water blocking part 1 and the air knife 2 are arranged in the groove 011 of the cigarette gun 01, which not only can play a targeted role, but also can reasonably utilize the limited space between the cigarette gun 01 and the cooling strip. In addition, the dehumidifying and dedusting device uses the air deflector 3 to cooperate with the groove 011 of the cigarette gun 01 to position and install the water blocking part 1 and the air knife 2, which can not only improve the installation strength of the water blocking part 1 and the air knife 2 in the cigarette gun 01, but also can constrain the blowing path of the air knife 2 to the cooling strip and prevent the condensate water and paper powder from entering the groove 011 of the cigarette gun 01, thereby ensuring the dehumidifying and dedusting effect.

[0041] The dehumidifying and dedusting device provided by the application will be further described below in combination with the drawings and embodiments.

[0042] In some embodiments, the dehumidifying and dedusting device provided by the application can be used in combination with the filter rod making machine. Figures 1 to 4 The air knife 2 can include an air guide pipe 21 and an air outlet 22 arranged on the air guide pipe 21; the two air knives 2 of the dehumidifying and dedusting device are arranged in the two grooves 011 of the cigarette gun 01 respectively, any air knife 2 is positioned and constrained by the corresponding groove 011 and the air deflector 3 arranged on the slot of the corresponding groove 011, and the air outlet 22 of any air knife 2 is aligned with the narrow opening 4 on the same side and inclined towards the other air guide pipe 21, in other words, the air outlets 22 of the two air knives 2 are aligned with the narrow openings 4 at the grooves 011 where they are respectively located and blow air towards each other.

[0043] In the above-mentioned embodiments, the cooling strip is located outside the cigarette gun 01 and between the two air knives 2, and the two air knives 2 blowing air towards each other can blow air to the cooling strip located between the two air knives 2, thereby realizing blowing air to two pairs of side surfaces of the cooling strip respectively.

[0044] In the above-mentioned embodiments, the air outlet 22 of any air knife 2 is aligned with the narrow opening 4 on the same side and inclined towards the other air guide pipe 21, so that the air outlet 22 of the air knife 2 arranged in the groove 011 is inclined outward, which can not only blow the cooling strip to carry away the condensate water and paper ash on the surface of the cigarette gun 01 and the cooling strip, but also can divert the aforementioned condensate water and paper ash away from the cigarette gun 01 and the cooling strip.

[0045] In some embodiments, the two air knives 2 can be connected to the same air supply device, and the air supply device has a switching circuit for linkage with the filter rod making machine, in other words, the dehumidifying and dedusting device provided by the application can be started and stopped simultaneously with the filter rod making machine, which is convenient for the operator to use. In addition, the dehumidifying and dedusting device only works when the filter rod making machine is started, which can save energy and reduce consumption.

[0046] Based on the above embodiments, you can refer to Figure 1 and Figure 5 The gas supply equipment may include a gas source, an oil-water separator 5, a first pressure regulator 6, a filter 7, a second pressure regulator 8, a control valve 9, and a pressure monitor 10 connected in sequence. The pressure monitor 10 is connected to the air duct 21. The gas source supplies compressed gas to the two air knives 2 through the oil-water separator 5, the first pressure regulator 6, the filter 7, the second pressure regulator 8, the control valve 9, and the pressure monitor 10 in sequence. The pressure regulation accuracy of the second pressure regulator 8 is greater than that of the first pressure regulator 6. For example, the first pressure regulator 6 can be a common pressure regulator, while the second pressure regulator 8 can be a precision pressure regulator.

[0047] The aforementioned gas supply equipment is supplied with compressed gas by a gas source. The oil-water separator 5, filter 7, precision pressure regulator, and pressure monitor 10 can respectively perform oil-water separation, coarse pressure adjustment, filtration, fine pressure adjustment, and pressure monitoring on the compressed gas supplied by the gas source. The control valve 9 is coupled to the switching circuit of the gas supply equipment. When the filter rod forming machine is started, the control valve 9 opens, and the gas supply equipment of the dehumidification and dust removal device begins to supply clean, pressure-stable compressed gas to the air knife 2.

[0048] For reference Figures 1 to 4 In some embodiments, the dehumidification and dust removal device provided in this application further includes a pipe positioning block 110; the pipe positioning block 110 is fixedly connected to the smoke gun 01 and is used to clamp and position the air guide pipes 21 of the two air knives 2. For example, the same end of the two air guide pipes 21 is clamped in the pipe positioning block 110, so that the smoke gun 01 is fixedly connected through the pipe positioning block 110. This reduces the difficulty of installing and disassembling the air knives 2 in the groove 011 of the smoke gun 01, and also reduces the design and processing difficulty of the air knives 2. A quick-connect air pipe connector 120 can be provided at the inlet of any one of the air guide pipes 21 for easy connection to an air source.

[0049] In addition, you can refer to Figure 1 and Figure 3 In some embodiments, the air guide plate 3 blocks more than half of the corresponding groove 011 along the width direction of the groove 011, which can effectively limit the flow direction of the compressed gas sprayed from the air knife 2 to the cooling strip. At the same time, the diameter of the air guide pipe 21 is larger than the width of the narrow opening 4, ensuring that the air guide pipe 21 will not detach from the smoke gun 01 from the narrow opening 4.

[0050] In the dehumidification and dust removal device provided in this application, at least a portion of the wall of the water-blocking component 1 and the air duct 21 of the same cleaning component can be assembled into a shielding portion for isolating the corresponding groove 011. The air outlet 22 and the narrow opening 4 are located on the same side of the shielding portion. The shielding portion can isolate the groove 011, dividing the groove 011 into two parts. For example, see reference... Figure 1 andFigure 3 The shielding part divides the groove 011 of the smoke gun 01 into two parts, the water blocking part 1 is filled in the upper half of the groove 011, and the air outlet 22 is located in the lower half of the groove 011. The air outlet 22 and the narrow opening 4 are both located on the lower side of the shielding part. This can not only prevent water in the smoke gun 01 from dripping out of the narrow opening 4, but also prevent the condensed water and impurities removed from the surface of the smoke gun 01 and the cooling strip from accidentally entering the groove 011.

[0051] The application also provides a filter rod forming equipment, which comprises the smoke gun 01 and the cooling strip, and also comprises the dehumidifying and dedusting device provided in the above embodiments. In the filter rod forming equipment, the cooling strip is installed on the surface of the smoke gun 01, and the smoke gun 01 is provided with two grooves 011 extending in the same direction, and the groove openings of the two grooves 011 are located on the same side of the smoke gun 01. For example, the groove openings of the two grooves 011 are located on the lower surface of the smoke gun 01 as shown in Figure 1 , and the cooling strip is installed on the lower surface of the smoke gun 01 as shown in Figure 1 , and the cooling strip is located between the two grooves 011.

[0052] On the basis of the above embodiments, the smoke gun 01 is further provided with a partition plate 012, the partition plate 012 is defined by the two grooves 011, in other words, the partition plate 012 is located between the two grooves 011 and protrudes outward. For reference, Figure 1 , in this embodiment, the groove openings of the two grooves 011 are located on the first surface of the smoke gun 01, the partition plate 012 comprises a partition plate 012 outer end part protruding towards the first surface, and the cooling strip is installed on the partition plate 012 outer end part.

[0053] For reference, Figure 1 , in the above embodiment, the partition plate 012 outer end part can comprise a top surface 0121 and two inclined surfaces 0122, the cooling strip is installed on the top surface 0121 of the partition plate 012 outer end part, and the two inclined surfaces 0122 of the partition plate 012 outer end part are symmetrically distributed on both sides of the top surface 0121, and any one inclined surface 0122 extends in the same direction as the air outlet 22 on the same side, which can guide the compressed gas to flow obliquely to the cooling strip.

[0054] To sum up, the dehumidifying and dedusting device provided by the application has small structural changes to the conventional filter rod forming machine, can better play the effect of removing water and dust, avoid the accumulation of condensed water and paper powder on the smoke gun 01 and the cooling strip to affect the production quality of the filter rod, reduce the problems of excessive filter rod weight, filter rod circumference and poor roundness, and improve the qualified rate of filter rod products.

[0055] The filter rod forming equipment and the dehumidifying and dedusting device provided by the application are described in detail above. The principles and implementation manners of the application are described by using specific examples in this paper, and the above description of the examples is only used to help understand the method of the application and its core idea. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the application without departing from the principles of the application, and these improvements and modifications also fall within the protection scope of the claims of the application.

Claims

1. A dehumidifying and dedusting device applied to a filter stick making machine, characterized in that, The application relates to a dehumidifying and dedusting device for a cigarette making machine. The device comprises two groups of cleaning components, which are arranged in two grooves (011) of a cigarette gun (01) and on two sides of a cooling strip respectively; each group of the cleaning components comprises water-blocking components (1) and air knives (2) capable of spraying compressed gas. The device further comprises two air deflectors (3), which are arranged at the openings of the two grooves (011) respectively; each air deflector (3) covers part of the opening of the corresponding groove (011), so that the uncovered part of the groove (011) forms a narrow opening (4) for the compressed gas to flow to the cooling strip.

2. The dehumidifying and dedusting device according to claim 1, characterized in that, Each air knife (2) comprises an air guide pipe (21) and an air outlet (22) arranged on the air guide pipe (21); the air outlet (22) of each air guide pipe (21) is aligned with the corresponding narrow opening (4) and is inclined to the other air guide pipe (21).

3. The dehumidifying and dedusting device according to claim 2, characterized in that, The two air knives (2) are connected to a gas supply device; the gas supply device comprises a switch circuit for being connected to a filter rod making machine.

4. The dehumidifying and dedusting device according to claim 3, characterized in that, The gas supply device comprises a gas source, an oil-water separator (5), a first pressure regulator (6), a filter (7), a second pressure regulator (8), a control valve (9) and a pressure monitor (10) connected in sequence; the pressure monitor (10) is connected to the air guide pipe (21); the pressure regulating precision of the second pressure regulator (8) is higher than that of the first pressure regulator (6).

5. The dehumidifying and dedusting device according to claim 2, characterized in that, The device further comprises a pipeline positioning block (110) for being fixedly connected to the cigarette gun (01); the same ends of the two air guide pipes (21) are clamped in the pipeline positioning block (110).

6. The dehumidifying and dedusting device according to any one of claims 2 to 5, characterized in that, The air deflector (3) is arranged to cover more than half of the corresponding groove (011) along the width direction of the groove (011); the diameter of the air guide pipe (21) is larger than the width of the narrow opening (4).

7. The dehumidifying and dedusting device according to any one of claims 2 to 5, characterized in that, Each water-blocking component (1) and at least part of the wall of the air guide pipe (21) are assembled to form a shielding part for shielding the corresponding groove (011); the air outlet (22) and the narrow opening (4) are arranged on the same side of the shielding part.

8. A filter rod forming apparatus, characterised in that, The device comprises a cigarette gun (01), a cooling strip and the dehumidifying and dedusting device according to any one of claims 2 to 7; the cooling strip is arranged on the surface of the cigarette gun (01); the cigarette gun (01) is provided with two grooves (011) extending in the same direction, and the openings of the two grooves (011) and the cooling strip are arranged on the same side of the cigarette gun (01).

9. A filter rod making apparatus according to claim 8 characterised in that, The cigarette gun (01) is provided with a partition plate (012) arranged between the two grooves (011); the openings of the two grooves (011) are arranged on a first surface of the cigarette gun (01), and the partition plate (012) comprises a partition plate outer end portion protruding towards the first surface, and the cooling strip is arranged on the partition plate outer end portion.

10. A filter rod making apparatus according to claim 9, characterised in that, The outer end of the partition plate comprises a top surface (0121) and two inclined surfaces (0122); the cooling strip is installed on the top surface (0121); the two inclined surfaces (0122) are symmetrically distributed on both sides of the top surface (0121), and any inclined surface (0122) and the air outlet (22) on the same side extend in the same direction, for guiding the compressed gas to flow obliquely to the cooling strip.

Citation Information

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