阅读说明：本技术 气凝胶隔热管填充装置、气凝胶隔热管与制作方法及低温烟具 (Aerogel heat insulation pipe filling device, aerogel heat insulation pipe, manufacturing method and low-temperature smoking set ) 是由 刘建福 钟科军 郭小义 黄炜 尹新强 易建华 王宏业 于 2019-04-03 设计创作，主要内容包括：本发明公开了一种气凝胶隔热管填充装置,包括基座,所述基座内形成有用于安放待填充隔热管的负压室,所述基座上还设有与所述负压室连通的料斗,所述料斗的出料口处设有控制其启闭的第一控制阀,还包括将负压室内的气压排空至低于外部气压的负压吸附设备,所述负压吸附设备通过第二控制阀与负压室的排气口连通。本发明还公开了一种采用上述填充装置制作气凝胶隔热管的方法及其制作的气凝胶隔热管和包括上述气凝胶隔热管的低温烟具。整个填充装置具有结构简单,易于实现,方便操作,工作效率高的特点,填充装置利用负压吸附原理,将气凝胶通过负压作用填充在隔热管的中空区域中,因而气凝胶颗粒的堆积密度高,从而使得隔热管的隔热效果更好。(The invention discloses an aerogel heat insulation pipe filling device which comprises a base, wherein a negative pressure chamber used for placing a heat insulation pipe to be filled is formed in the base, a hopper communicated with the negative pressure chamber is further arranged on the base, a first control valve for controlling the hopper to be opened and closed is arranged at a discharge port of the hopper, the aerogel heat insulation pipe filling device further comprises a negative pressure adsorption device for evacuating the air pressure in the negative pressure chamber to be lower than the external air pressure, and the negative pressure adsorption device is communicated with an exhaust port of the negative pressure chamber through a second control valve. The invention also discloses a method for manufacturing the aerogel heat insulation pipe by adopting the filling device, the aerogel heat insulation pipe manufactured by the method and a low-temperature smoking set comprising the aerogel heat insulation pipe. Whole filling device has simple structure, easily realizes, convenient operation, characteristics that work efficiency is high, and filling device utilizes the negative pressure to adsorb the principle, fills aerogel in the hollow region of thermal-insulated pipe through the negative pressure effect, therefore the bulk density of aerogel granule is high to it is better to make thermal-insulated effect of thermal-insulated pipe.)

1. The utility model provides an aerogel thermal-insulated pipe filling device, includes the base, its characterized in that: the base is internally provided with a negative pressure chamber used for placing a to-be-filled heat insulation pipe, the base is further provided with a hopper communicated with the negative pressure chamber, a first control valve for controlling the opening and closing of the hopper is arranged at a discharge port of the hopper, the base further comprises a negative pressure adsorption device for evacuating the air pressure in the negative pressure chamber to be lower than the external air pressure, and the negative pressure adsorption device is communicated with an exhaust port of the negative pressure chamber through a second control valve.

2. Filling device according to claim 1, wherein: the negative pressure chamber comprises a cartridge chamber with an opening at the top for the thermal insulation pipe to be filled to be matched and inserted and a material conveying channel communicated with the top of the cartridge chamber.

3. Filling device according to claim 2, wherein: the conveying channel is arranged along the vertical direction and is coaxial with the insertion chamber.

4. Filling device according to claim 3, wherein: the device is characterized by further comprising a plugging piece for plugging the top of the inner cavity of the heat-insulating pipe to be filled, wherein the top of the plugging piece is conical and extends into the discharge end of the material conveying channel, and the plugging piece coincides with the axis of the conveying channel.

5. Filling device according to any one of claims 2-4, wherein: the base comprises a lower seat and an upper seat which is connected with the lower seat in a sealing and detachable mode, the inserting chamber is arranged on the lower seat, and the material conveying channel is arranged in the upper seat and communicated with a hopper at the top of the upper seat.

6. Filling device according to claim 5, wherein: the exhaust port is arranged on the side part of the upper seat.

7. Filling device according to claim 5, wherein: the upper end face of the lower seat is concavely provided with a cavity for the upper seat to be matched and spliced, the upper seat is inserted and fixed in the cavity and sealed through a sealing element, and the bottom of the cavity is provided with a counter bore to form the insertion chamber.

8. A method for manufacturing an aerogel thermal insulation pipe using the filling device according to any of claims 1 to 7, comprising the steps of:

the method comprises the following steps: the bottom ends of an inner pipe and an outer pipe of the heat insulation pipe to be filled are connected through a lower flange, and a hollow area is reserved between the outer pipe and the inner pipe;

step two: placing the assembled heat insulation pipe to be filled in a negative pressure chamber, enabling the top opening of the hollow area to face upwards, plugging the top of the inner pipe through a plugging piece, closing the first control valve, opening the second control valve, and evacuating the air pressure in the negative pressure chamber to be lower than the external air pressure through negative pressure adsorption equipment;

step three: closing negative pressure adsorption equipment and second control valve, opening first control valve, the aerogel gets into the negative pressure room and piles up the packing at thermal-insulated tub hollow region through material mouth discharge gate under the outside atmospheric pressure effect, fills the back that finishes, takes out thermal-insulated tub from the negative pressure is indoor and seals the top in hollow region through the upper flange, accomplishes the preparation of aerogel thermal-insulated tub.

9. An aerogel insulation pipe produced by the method of claim 8, wherein: aerogel particles are filled in the aerogel heat insulation pipe, and the packing density rho b of the aerogel particles in the aerogel heat insulation pipe is 1.05-2.68g/cm³。

10. The aerogel insulation tube of claim 9, wherein: the aerogel is silicon dioxide aerogel particles.

11. An aerogel insulation tube as claimed in claim 9 or 10, wherein: the aerogel particles have a combined diameter of 1.2-4.5 mm.

12. A low temperature smoking set, its characterized in that: use of the aerogel thermal insulation tube as claimed in any of claims 9 to 11 as a thermal insulation member, the inner cavity of the aerogel thermal insulation tube constituting a heating chamber of a low temperature smoking set.

Technical Field

The invention relates to an aerogel heat insulation pipe filling device, an aerogel heat insulation pipe, a manufacturing method and a low-temperature smoking set.

Background

The low-temperature smoking set enables cigarettes to generate smoke in a power-on heating (non-combustion) mode for a user to suck, the working temperature of a heating body of the low-temperature smoking set is about 220 ℃, and at the temperature, the shell of the low-temperature smoking set can also be subjected to heat transfer and can possibly cause scalding, so that heat insulation is needed to be carried out on the heating body, and the low-temperature smoking set is prevented from scalding hands. At present, the low-temperature smoking device has two heat insulation modes, one mode is to coat a vacuum tube outside a heating body, and the other mode is to coat one or more layers of aerogel outside the heating body. The price of the vacuum tube is too high, the production and assembly of the aerogel on a production line are too complex, the efficiency is low, and too much dust exists.

Chinese utility model patent No. 2018209448939 discloses an aerogel heat insulation pipe, wherein a hollow region enclosed by an inner pipe and an outer pipe is filled with aerogel, and both ends are sealed to form the aerogel heat insulation pipe; however, the above patent does not disclose a specific manufacturing method thereof, nor does it disclose the device with which the aerogel is filled.

Disclosure of Invention

The present application is directed to solving at least one of the problems in the prior art. Therefore, an object of the present invention is to provide an aerogel thermal insulation pipe filling device, an aerogel thermal insulation pipe and a manufacturing method thereof, and a low temperature smoking set.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides an aerogel thermal-insulated pipe filling device, includes the base, be formed with in the base and be used for laying the negative pressure chamber of treating to fill thermal-insulated pipe, still be equipped with on the base with the hopper of negative pressure chamber intercommunication, the discharge gate department of hopper is equipped with the first control valve that controls its and open and close, still includes the atmospheric pressure evacuation in the negative pressure chamber to the negative pressure adsorption equipment that is less than outside atmospheric pressure, negative pressure adsorption equipment passes through the gas vent intercommunication of second control valve with the negative pressure chamber.

Furthermore, the negative pressure chamber comprises a plug-in chamber with an opening at the top for matching and plugging the thermal insulation pipe to be filled and a material conveying channel communicated with the top of the plug-in chamber.

Further, the conveying channel is arranged along the vertical direction and is coaxial with the insertion chamber.

Further, still include the shutoff piece of the interior pipe cavity top shutoff of thermal-insulated intraductal pipe that will wait to fill, the top of shutoff piece is the toper and extends to in material transfer passage's the discharge end, shutoff piece and transfer passage's axis coincidence.

Further, the discharge end of the conveying channel is conical.

Further, the negative pressure adsorption equipment is a vacuum pump.

Further, the base includes lower seat and with the sealed upper seat of dismantling the connection of lower seat, the cartridge chamber set up in on the lower seat, material transfer passage set up in the upper seat and with the hopper intercommunication at upper seat top.

Further, the exhaust port is arranged on the side of the upper seat, one end of the exhaust port is communicated with the material conveying channel, and the other end of the exhaust port is connected to the negative pressure adsorption equipment through a second control valve.

Furthermore, a cavity for the upper seat to be matched and spliced is formed in the concave upper end surface of the lower seat, the upper seat is inserted and fixed in the cavity and sealed through a sealing element, and a counter bore is formed in the bottom of the cavity to form the insertion chamber.

A method for manufacturing the aerogel heat insulation pipe by using the filling device comprises the following steps:

the method comprises the following steps: the bottom ends of an inner pipe and an outer pipe of the heat insulation pipe to be filled are connected through a lower flange, and a hollow area is reserved between the outer pipe and the inner pipe;

step two: placing the assembled heat insulation pipe to be filled in a negative pressure chamber, enabling the top opening of the hollow area to face upwards, plugging the top of the inner pipe through a plugging piece, closing the first control valve, opening the second control valve, and evacuating the air pressure in the negative pressure chamber to be lower than the external air pressure through negative pressure adsorption equipment;

step three: closing negative pressure adsorption equipment and second control valve, opening first control valve, the aerogel gets into the negative pressure room and piles up the packing at treating to fill insulating tube hollow area through material mouth discharge gate under the outside atmospheric pressure effect, and the back that finishes will be treated to fill insulating tube and take out from the negative pressure room and seal hollow area's top through the upper flange, accomplishes the preparation of aerogel insulating tube.

The aerogel heat insulation pipe is manufactured by the method, and aerogel particles are filled in the aerogel heat insulation pipe.

Further, the aerogel is silica aerogel particles.

Further, the packing density of the aerogel particles in the hollow area is 1.05-2.68g/cm ^ 3.

Further, the comprehensive diameter of the aerogel particles filled in the hollow area is 1.2-4.5 mm.

Further, the aerogel is silica aerogel particles.

The utility model provides a low temperature smoking set, adopts above-mentioned aerogel thermal-insulated pipe as thermal-insulated component, the inner chamber of aerogel thermal-insulated pipe constitutes the heating chamber of low temperature smoking set.

Compared with the prior art, the invention has the advantages that: whole filling device has simple structure, easily realize, convenient operation, characteristics that work efficiency is high, filling device utilizes the negative pressure adsorption principle, fill aerogel in the hollow region of thermal-insulated pipe through the negative pressure effect, therefore the bulk density of aerogel granule can reach a suitable scope (aerogel bulk density is too low or too high all can lead to thermal-insulated effect to descend), thereby make the thermal-insulated effect of thermal-insulated pipe better, and make the thermal-insulated pipe of aerogel can gain a best balance between weight and thermal-insulated effect.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a front view of an insulated pipe made using the filling apparatus of the present invention;

FIG. 4 is an exploded view of an insulated pipe made using the filling apparatus of the present invention;

FIG. 5 is a schematic view of the assembly of the insulating tube with the lower base;

FIG. 6 is a schematic view of the upper and lower seats assembled;

FIG. 7 is a schematic view of the insulation tube in a pre-filled state;

FIG. 8 is a schematic view showing a state during filling of the insulating tube;

FIG. 9 is a schematic view of a low temperature smoking article incorporating the insulated tube of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 2, an aerogel heat insulation pipe filling device, including base 1, be formed with negative pressure chamber 2 in the base 1, still be equipped with the hopper 3 with negative pressure chamber 2 intercommunication on the base 1, hopper 3 is used for storing the aerogel granule, the discharge gate department of hopper 3 is equipped with the first control valve 4 that controls it to open and close, still include the negative pressure adsorption equipment 5 that empties the atmospheric pressure in negative pressure chamber 2 to being less than outside atmospheric pressure, negative pressure adsorption equipment 5 communicates through the gas vent of second control valve 6 with negative pressure chamber 2. In this embodiment, the negative pressure adsorption apparatus 5 employs a vacuum pump.

In this embodiment, the aerogel thermal insulation pipe 7 includes an inner pipe 701 and an outer pipe 702 sleeved outside the inner pipe 701, a hollow region is formed between the inner pipe 701 and the outer pipe 702 for filling aerogel particles 703, and after the aerogel is filled, the inner pipe 701 and the outer pipe 702 are sealed between two ends, so that the aerogel is encapsulated in the hollow region to form the aerogel thermal insulation pipe. The aerogel filling layer can also be designed into multiple layers according to the requirement of heat insulation performance.

During the use, will wait to fill insulating tube hollow region bottom through lower flange 704 shutoff, will wait to fill insulating tube hollow region open-top and up place in negative pressure chamber 2, close first control valve 4, open second control valve 6, utilize negative pressure adsorption equipment 5 evacuation, will wait to fill the gas discharge between insulating tube and negative pressure chamber 2, form the negative pressure with the outside, when reaching the settlement negative pressure value, close second control valve 6 and stop bleeding, open first control valve 4, aerogel granule gets into negative pressure chamber 2 and fills the hollow region from the hopper rapidly under the external atmospheric pressure effect, after filling, will wait to fill insulating tube and take out and seal the top of hollow region through upper flange 705 from negative pressure chamber 2, accomplish the preparation of aerogel insulating tube.

In the whole filling process of the embodiment, the filling device fills the aerogel in the hollow area of the heat insulation pipe through the negative pressure adsorption principle, so that the stacking density of aerogel particles can reach a proper range, and the heat insulation effect of the heat insulation pipe is better; in addition, compared with the prior art that the assembly is directly produced on a production line, the filling efficiency is higher, and no dust is brought into the assembly process. The first control valve and the second control valve can adopt manual valves or electromagnetic control automatic valves and the like.

Referring to fig. 3, in one embodiment, the sub-atmospheric pressure chamber 2 includes a cartridge 201 having an open top for mating insertion of an insulated pipe to be filled and a material transfer passage 202 communicating with the top of the cartridge 201. In this implementation, treat to fill aerogel thermal-insulated pipe 7 and directly insert in cartridge 201, it is very convenient to install and dismantle, treats to fill the thermal-insulated pipe opening moreover and upwards sets up, and the aerogel can be piled up with higher speed under the action of gravity, effectively improves bulk density.

Referring to fig. 1, in another embodiment, the conveying channel 202 is arranged in a vertical direction and is coaxial with the cartridge chamber 201, and the conveying channel 202 is designed as a vertical straight-through channel, so that the resistance in the aerogel filling process is small, thereby further improving the packing density and ensuring the heat insulation effect of the heat insulation pipe.

It should be noted that, in practical design, referring to fig. 3, this embodiment further includes a plugging member 8 for plugging the top of the inner cavity of the thermal insulation pipe to be filled, the top of the plugging member 8 is tapered and extends into the discharge end of the material conveying channel 202, and the axis of the plugging member 8 coincides with the axis of the conveying channel 202. The blocking piece 8 is inserted into the inner tube 701 in an interference manner, and can be made of rubber and other materials.

In this embodiment, the inner cavity of the inner tube 701 of the heat insulation tube is sealed by the plugging member 8, so that aerogel particles can be prevented from entering the inner tube 701, and the aerogel can be prevented from adhering to the inner cavity of the inner tube 701 to pollute the inner cavity; meanwhile, the using amount of aerogel particles is saved; in addition, the top of the blocking piece 8 is designed to be conical and coincide with the axis of the conveying channel 202, so that aerogel particles falling from the discharge end of the conveying channel can uniformly enter a hollow area from the top opening of the heat insulation pipe, uniform filling of all parts of the hollow area is realized, the uniformity of filling is ensured, and the uniformity of heat insulation performance of all parts of the same cross section of the heat insulation pipe can also be ensured.

In a preferred embodiment, the discharge end of the conveying channel 202 can also be designed to be conical, and the inner wall surface of the discharge end of the conveying channel 202 is parallel to the top surface of the blocking piece 8, so that aerogel particles can pass through the inner wall of the discharge end and the top surface of the blocking piece quickly, and cannot be deposited and blocked.

Referring to fig. 1, in an embodiment, the base 1 comprises a lower seat 101 and an upper seat 102 sealingly detachably connected to the lower seat 101, the cartridge chamber 201 is arranged on the lower seat 101, and the material conveying channel 202 is arranged in the upper seat 102 and communicates with the hopper 3 at the top of the upper seat 102. In this embodiment, the base 1 includes the upper seat 102 and the lower seat 101, and the lower seat 101 and the upper seat 102 are detachably connected in a sealing manner, so that dust-free performance in the filling process is ensured, and the thermal insulation pipe to be filled can be conveniently inserted into or pulled out of the cartridge chamber only by separating the lower seat 101 from the upper seat 102.

Referring to fig. 6, this embodiment shows a specific connection mode of the upper seat 102 and the lower seat 101, the upper end surface of the lower seat 101 is concavely formed with a chamber 9 for the upper seat 102 to be inserted and connected, the upper seat 102 is inserted and fixed in the chamber 9 and sealed by a bottom sealing ring 10, and a counterbore is arranged at the bottom of the chamber 9 to form an insertion chamber 201.

Referring to fig. 5, in the present embodiment, the upper seat 102 and the lower seat 101 are connected in a plugging manner, and sealing rings are disposed on the top of the upper seat 102 and the bottom of the lower seat 101 to seal the connection, which can achieve quick connection between the upper seat 102 and the lower seat 101, thereby facilitating installation of the heat insulation pipe. Especially, when the bottom parallel and level of thermal-insulated pipe top and cavity, through seting up the ring type seal mounting groove at cartridge 201 top outer fringe, install sealing washer 10 in the sealing washer mounting groove and match on the outer wall of the thermal-insulated pipe of suit, can avoid the outside adhesion aerogel of outer tube, cause the waste of aerogel, guarantee the cleanness of outer tube 702, simultaneously through removing the sealing washer, can make things convenient for extracting of thermal-insulated pipe.

Referring to fig. 3, in this embodiment, the exhaust port is disposed at a side portion of the upper seat 102, one end of the exhaust port is communicated with the material conveying passage 202, the other end of the exhaust port is connected to the negative pressure adsorption device 5 through the second control valve 6 and the quick coupling 11, the negative pressure adsorption device 5 is in sealed butt joint with the second control valve 6 through the quick coupling 11, and the negative pressure adsorption device 5 is convenient to disassemble and assemble.

Referring to fig. 1 to 4 and fig. 7 and 8, a method for manufacturing an aerogel thermal insulation pipe using the above-described filling apparatus includes the steps of:

the method comprises the following steps: the bottom ends of an inner pipe 701 and an outer pipe 702 of the heat insulation pipe to be filled are connected through a lower flange 704, and a hollow area is reserved between the outer pipe 702 and the inner pipe 701;

step two: inserting the assembled heat insulation pipe into the insertion chamber 201 from the top of the lower seat 101, installing a sealing ring 10 at the bottom of the chamber, inserting the upper seat 102 into the chamber of the lower seat 101 and abutting against the sealing ring 10 for sealing, wherein the top of the hollow area of the heat insulation pipe to be filled is opened upwards, the top of the inner pipe 702 is sealed by a sealing piece 8, closing the first control valve 4, opening the second control valve 6, and evacuating the air pressure in the negative pressure chamber 2 to be lower than the external air pressure, preferably high vacuum, by the negative pressure adsorption equipment 5;

step three: closing negative pressure adsorption equipment 5 and second control valve 6, opening first control valve 4, aerogel granule gets into negative pressure chamber 2 and piles up the packing at the thermal-insulated pipe hollow area that waits to fill through material mouthful discharge gate under the outside atmospheric pressure effect, and the back that finishes fills separates seat 102 and seat 101 down, will wait to fill the thermal-insulated pipe and extract from seat 101 down to seal the top of hollow area through upper flange 705, accomplish the preparation of aerogel thermal-insulated pipe.

In this embodiment, the aerogel used for filling the thermal insulation pipe is nano-sized aerogel particles in an aggregate state, and the aggregate diameter (defined as the diameter of a sphere in the case that each aerogel particle in an aggregate state is regarded as a regular sphere) of the aerogel particles is 1.2-4.5mm, and the aerogel particles are preferably silica aerogel particles.

The aerogel heat insulation pipe manufactured by the method has the bulk density rho_bThe heat insulation effect is approximately equal to 1.05-2.68g/cm ^3, the best heat insulation effect can be achieved, tests show that under the stacking density, the aerogel heat insulation pipe is applied to a low-temperature smoking set, when a heating body of the smoking set works normally, the temperature at two ends of the aerogel heat insulation pipe floats between 66 and 78 ℃, the middle temperature is about 50 to 58 ℃, the heat insulation effect is close to a vacuum pipe, and the perfect balance between the heat insulation effect and the self weight can be achieved.

Referring to fig. 9, the aerogel heat insulation pipe is used as a heat insulation component, the aerogel heat insulation pipe is installed in a shell 12 of the smoking set, an inner cavity of the aerogel heat insulation pipe forms a heating cavity of the low-temperature smoking set, a heating body 13 is arranged in the heating cavity, smoking materials 14 such as cigarettes are inserted into the heating cavity and heated by the heating body to generate smoke sucked by a user.

The above examples are merely illustrative for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Nor is it intended to be exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.