CN209819048U - Airgel heat insulation pipe filling device, airgel heat insulation pipe and low temperature smoking set - Google Patents

Abstract

The utility model discloses an airgel heat insulation pipe filling device, which comprises a base, a negative pressure chamber for placing the heat insulation pipe to be filled is formed in the base, and the base is also provided with the A hopper connected to the negative pressure chamber, the discharge port of the hopper is provided with a first control valve to control its opening and closing, and also includes a negative pressure adsorption device for evacuating the air pressure in the negative pressure chamber to be lower than the external air pressure. The negative pressure adsorption device communicates with the exhaust port of the negative pressure chamber through the second control valve. The utility model also discloses an airgel heat-insulating pipe made by the filling device and a low-temperature smoking set comprising the above-mentioned airgel heat-insulating pipe. The entire filling device has the characteristics of simple structure, easy realization, convenient operation and high work efficiency. The filling device uses the principle of negative pressure adsorption to fill the airgel in the hollow area of the heat insulation tube through negative pressure, so that the airgel particles The bulk density is high, so that the heat insulation effect of the heat insulation pipe is better.

Description

Airgel heat insulation pipe filling device, airgel heat insulation pipe and low temperature smoking set

technical field

The utility model relates to an airgel heat-insulating pipe filling device, an airgel heat-insulating pipe and a low-temperature smoking set.

Background technique

The low-temperature smoking set makes cigarettes generate smoke by heating (not burning) for the user to smoke. The working temperature of the heating element is generally around 220 degrees. At this temperature, the shell of the low-temperature smoking set will also be subjected to heat transfer. , It may cause hot hands, so the heat-generating body should be insulated to avoid hot hands from low-temperature smoking appliances. At present, there are two methods of heat insulation for low-temperature smoke appliances, one is to wrap a vacuum tube on the heating body, and the other is to wrap one or several layers of airgel on the heating body. The price of vacuum tubes is too high, and the production and assembly of aerogels on the production line is too complicated, inefficient, and has too much dust.

The Chinese Utility Model Patent No. 2018209448939 discloses an airgel heat-insulating tube, in which the inner tube and the outer tube form a hollow area filled with aerogel and sealed at both ends to form an airgel heat-insulating tube; but the above The patent does not disclose its specific manufacturing method, nor does it disclose what kind of device the airgel is filled with.

Utility model content

This application aims to solve at least one of the technical problems existing in the prior art. Therefore, one of the objectives of the present utility model is to provide an airgel heat-insulating tube filling device, an airgel heat-insulating tube and a low-temperature smoking set.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

An airgel heat insulation pipe filling device, comprising a base, a negative pressure chamber for placing the heat insulation pipe to be filled is formed in the base, and a pressure chamber communicating with the negative pressure chamber is also provided on the base. A hopper, the outlet of the hopper is provided with a first control valve to control its opening and closing, and also includes a negative pressure adsorption device that evacuates the air pressure in the negative pressure chamber to be lower than the external air pressure, and the negative pressure adsorption device passes through The second control valve and the quick connector communicate with the exhaust port of the negative pressure chamber.

Further, the negative pressure chamber includes an insertion chamber with a top opening for the matching insertion of the to-be-filled heat-insulated tube, and a material delivery channel communicating with the top of the insertion chamber.

Further, the conveying channel is arranged vertically and coaxially with the insertion chamber.

Further, it also includes a sealing member for sealing the top of the inner cavity of the heat-insulating pipe to be filled, the top of the sealing member is conical and extends into the discharge end of the material conveying channel, the sealing member coincident with the axis of the conveying channel.

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

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

Further, the base includes a lower seat and an upper seat that is sealed and detachable connected with the lower seat, the insertion chamber is arranged on the lower seat, and the material conveying channel is arranged in the upper seat and connected with the upper seat The top hopper is connected.

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

Further, the upper end surface of the lower seat is recessed to form a chamber for matching and plugging the upper seat, the upper seat is inserted and fixed in the chamber and sealed by a seal, and the bottom of the chamber is provided A counterbore constitutes the insertion chamber.

A method for making an airgel heat-insulated pipe using the above-mentioned filling device, comprising the steps of:

Step 1: Connect the bottom end of the inner pipe to be filled with the outer pipe through the lower flange, and leave a hollow area between the outer pipe and the inner pipe;

Step 2: Place the assembled heat insulation tube to be filled in the negative pressure chamber, with the top opening of the hollow area facing upwards, and seal the top of the inner tube with a sealing piece, close the first control valve, and open the second control valve , the air pressure in the negative pressure chamber is evacuated to be lower than the external air pressure through negative pressure adsorption equipment;

Step 3: Close the negative pressure adsorption equipment and the second control valve, open the first control valve, the airgel enters the negative pressure chamber through the discharge port of the feed port under the action of external air pressure, and accumulates and fills in the hollow area of the heat insulation tube to be filled. After filling, the heat insulation tube to be filled is taken out from the negative pressure chamber and the top of the hollow area is closed through the upper flange to complete the manufacture of the airgel heat insulation tube.

An airgel heat insulation pipe is manufactured by the above method.

Further, the airgel is silica airgel particles.

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

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

Further, the airgel is silica airgel particles.

A low-temperature smoking appliance adopts the above-mentioned airgel heat-insulating tube as a heat-insulating member, and the inner cavity of the airgel heat-insulating tube constitutes a heating chamber of the low-temperature smoking appliance.

Compared with the prior art, the utility model has the advantages that: the whole filling device has the characteristics of simple structure, easy realization, convenient operation and high working efficiency. The airgel particles are filled in the hollow area of the heat insulation pipe, so the packing density of the airgel particles is high, so that the heat insulation effect of the heat insulation pipe is better.

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is the explosion diagram of the utility model;

Fig. 3 is the front view of the heat insulation pipe made by the filling device of the present invention;

Fig. 4 is the exploded view of the heat-insulating pipe made by the filling device of the present invention;

Figure 5 is a schematic diagram of the assembly of the heat insulating tube and the lower seat;

Figure 6 is a schematic diagram of the assembly of the upper seat and the lower seat;

Fig. 7 is a schematic diagram of the state before the heat insulation tube is filled;

Fig. 8 is a schematic diagram of the state during the filling process of the heat insulating tube;

Fig. 9 is a schematic diagram of a low-temperature smoking set using the heat insulating tube of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Referring to Fig. 1 and Fig. 2, an airgel heat insulation tube filling device includes a base 1, a negative pressure chamber 2 is formed in the base 1, and a hopper 3 communicating with the negative pressure chamber 2 is also provided on the base 1 , the hopper 3 is used to store airgel particles, the discharge port of the hopper 3 is provided with a first control valve 4 that controls its opening and closing, and also includes a negative pressure valve that evacuates the air pressure in the negative pressure chamber 2 to be lower than the external air pressure. The negative pressure adsorption device 5 communicates with the exhaust port of the negative pressure chamber 2 through the second control valve 6 . In this embodiment, the negative pressure adsorption device 5 adopts a vacuum pump.

In this embodiment, the airgel insulation tube 7 includes an inner tube 701 and an outer tube 702 sleeved outside the inner tube 701. A hollow area is formed between the inner tube 701 and the outer tube 702 for filling airgel particles 703. After the gel is filled, the two ends of the inner tube 701 and the outer tube 702 are sealed, so that the airgel is encapsulated in the hollow area to form an airgel heat insulation tube. According to the heat insulation performance requirements, the airgel filling layer can also be designed as multi-layer.

When in use, the bottom of the hollow area of the heat insulation pipe to be filled is blocked by the lower flange 704, and the top of the hollow area of the heat insulation pipe to be filled is opened and placed upward in the negative pressure chamber 2, the first control valve 4 is closed, and the The second control valve 6 is evacuated by the negative pressure adsorption device 5, and the gas between the heat insulation pipe to be filled and the negative pressure chamber 2 is discharged to form a negative pressure with the outside. When the set negative pressure value is reached, the second control valve is closed. Control the valve 6 and stop pumping, open the first control valve 4, the airgel particles enter the negative pressure chamber 2 from the hopper quickly under the action of external air pressure and fill the hollow area. Take it out from the chamber 2 and seal the top of the hollow area through the upper flange 705 to complete the manufacture of the airgel heat insulation tube.

In the entire filling process of this embodiment, because it is filled under the action of negative pressure, the bulk density of the airgel particles is higher, so that the heat insulation effect of the heat insulation tube is better; The filling efficiency is also higher, and there is basically no dust brought in during the assembly process. The first control valve and the second control valve can be manual valves or automatic valves such as electromagnetic control.

Referring to FIG. 3 , in one embodiment, the negative pressure chamber 2 includes an insertion chamber 201 with a top opening for the matching insertion of the heat insulation pipe to be filled and a material delivery channel 202 communicating with the top of the insertion chamber 201 . In this implementation, the airgel heat insulation tube 7 to be filled is directly inserted in the insertion chamber 201, which is very convenient for installation and disassembly, and the opening of the heat insulation tube to be filled is set upward, and the aerogel can accelerate accumulation under the action of gravity. Effectively increase the bulk density.

Referring to Fig. 1, in another embodiment, the delivery channel 202 is arranged vertically and is coaxial with the insertion chamber 201, the delivery channel 202 is designed as a vertical straight-through channel, and the resistance during the airgel filling process is small, so that The bulk density can be further increased to ensure the heat insulation effect of the heat insulation pipe.

It should be noted that, in the actual design, referring to Fig. 3, this embodiment also includes a sealing member 8 that seals the top of the inner cavity of the inner tube of the heat insulation pipe to be filled. The top of the sealing member 8 is conical and extends to the material conveying In the discharge end of the channel 202 , the blocking member 8 coincides with the axis of the conveying channel 202 . The blocking member 8 is an interference plug in the inner tube 701, which can be made of materials such as rubber.

In this embodiment, the inner cavity of the inner tube 701 of the heat insulation tube is sealed by the sealing member 8, thereby preventing the airgel particles from entering the inner tube 701, and avoiding the aerogel from adhering to the inner cavity of the inner tube 701 and causing pollution. Inner cavity; simultaneously save the consumption of airgel particle; In addition, the top of plugging part 8 is designed to taper and coincides with the axis of conveying passage 202, can make the airgel particle that falls from the discharge end of conveying passage can be uniform Enter the hollow area from the opening at the top of the heat-insulating pipe to achieve uniform filling of each part of the hollow area and ensure the uniformity of filling, that is, to ensure the consistency of the heat insulation performance of the same cross-section of the heat-insulating pipe.

In a preferred embodiment, the discharge end of the delivery channel 202 can also be designed to be tapered, and the inner wall surface of the delivery end of the delivery channel 202 is kept parallel to the top surface of the blocking member 8, which ensures that the airgel particles can be discharged from the discharge end. The passage between the inner wall of the end and the top surface of the blocking member passes quickly without silting and blocking.

Referring to FIG. 1 , in one embodiment, the base 1 includes a lower seat 101 and an upper seat 102 that is hermetically and detachably connected to the lower seat 101 , the insertion chamber 201 is arranged on the lower seat 101 , and the material conveying channel 202 is arranged in the upper seat 102 And it communicates with the hopper 3 on the top of the upper seat 102 . In this embodiment, the base 1 includes an upper seat 102 and a lower seat 101, and the lower seat 101 is sealed and detachably connected with the upper seat 102, which not only ensures the dust-free performance during the filling process, but also only needs to separate the lower seat 101 from the upper seat 102 , the heat insulation tube to be filled can be easily inserted into or pulled out from the insertion chamber.

Referring to Fig. 6, this embodiment provides a specific connection method between 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 matching and plugging the upper seat 102, and the upper seat 102 is plugged and fixed on the The chamber 9 is sealed by a sealing ring 10 at the bottom, and a counterbore is provided at the bottom of the chamber 9 to form an insertion chamber 201 .

Referring to Fig. 5, in this embodiment, the upper, 102 and the lower seat 101 are plugged and connected, and a sealing ring is provided on the top of the upper seat 102 and the bottom of the lower seat 101 to realize the sealing of the connection. This way can realize the upper seat 102 and the lower seat. The quick connection of the seat 101 facilitates the installation of the heat insulation pipe. In particular, when the top of the heat insulating tube is flush with the bottom of the chamber, the sealing ring 10 is installed in the sealing ring mounting groove by opening an annular sealing ring installation groove on the top outer edge of the insertion chamber 201 and matched with the heat insulating tube On the outer wall of the outer tube, the aerogel can be avoided from adhering to the outside of the outer tube, resulting in a waste of the aerogel, and the cleanliness of the outer tube 702 can be ensured. At the same time, the removal of the sealing ring can facilitate the extraction of the heat insulating tube.

Referring to Fig. 3, in this embodiment, the exhaust port is arranged on the side of the upper seat 102, one end of the exhaust port communicates with the material conveying channel 202, and the other end is connected to the negative pressure adsorption device 5 through the second control valve 6 and the quick connector 11, The negative pressure adsorption device 5 is sealed and docked with the second control valve 6 through the quick connector 11, and the negative pressure adsorption device 5 is easy to disassemble.

Referring to Fig. 1-Fig. 4 and Fig. 7 and Fig. 8, a method for making an airgel heat-insulated pipe using the above-mentioned filling device comprises the following steps:

Step 1: Connect the inner tube 701 and the bottom end of the outer tube 702 of the heat insulation tube to be filled through the lower flange 704, leaving a hollow area between the outer tube 702 and the inner tube 701;

Step 2: Insert the assembled heat insulation pipe from the top of the lower seat 101 into the insertion chamber 201, install the sealing ring 10 at the bottom of the chamber, insert the upper seat 102 into the chamber of the lower seat 101 and abut and seal with the sealing ring 10 , the top opening of the hollow area of the heat insulation pipe to be filled is facing upward, and the top of the inner pipe 702 is blocked by the sealing member 8, the first control valve 4 is closed, the second control valve 6 is opened, and the negative pressure adsorption device 5 is used to remove the negative pressure. The air pressure in the pressure chamber 2 is evacuated to be lower than the external air pressure, preferably a high vacuum;

Step 3: Close the negative pressure adsorption device 5 and the second control valve 6, open the first control valve 4, and the airgel particles enter the negative pressure chamber 2 through the discharge port of the feed port under the action of external air pressure and accumulate and fill in the compartment to be filled. After filling the hollow area of the heat pipe, separate the upper seat 102 from the lower seat 101, pull out the heat insulation tube to be filled from the lower seat 101, and seal the top of the hollow area through the upper flange 705 to complete the airgel insulation. Fabrication of heat pipes.

In the present embodiment, the airgel used for filling the heat-insulated pipe is an aggregated nanoscale airgel particle, and its comprehensive diameter (the comprehensive diameter is defined as, the airgel particle of each aggregated state is regarded as a regular spherical situation Below, the diameter of the sphere) is 1.2-4.5mm, and the airgel preferably adopts silica airgel particles.

The airgel heat insulation tube produced by the above method has a bulk density ρ _b ≈1.05-2.68g/cm^3, which can achieve the best heat insulation effect. After testing, under this bulk density, the airgel heat insulation tube Applied on low-temperature smoking appliances, when the heating element of the smoking appliance is working normally, the temperature at both ends fluctuates between 66-78 degrees, and the middle temperature is about 50-58 degrees. achieve a perfect balance.

Referring to Figure 9, a low-temperature smoking appliance uses the above-mentioned airgel heat-insulating tube as a heat-insulating member, and the airgel heat-insulating tube is installed in the shell 12 of the smoking appliance, and the inner cavity of the airgel heat-insulating tube constitutes the heating device for the low-temperature smoking appliance. Cavity, by setting a heating element 13 in the heating cavity, smoking materials 14 such as cigarettes are inserted into the heating cavity and heated by the heating element to generate smoke for the user to inhale.

The above-mentioned embodiments are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the embodiments here. And the obvious changes or changes derived therefrom are still within the protection scope of the present utility model.

Claims (11)

1. An airgel heat insulation tube filling device, comprising a base, characterized in that: a negative pressure chamber for placing the heat insulation tube to be filled is formed in the base, and the base is also provided with the The hopper connected to the negative pressure chamber, the discharge port of the hopper is provided with a first control valve to control its opening and closing, and also includes a negative pressure adsorption device for evacuating the air pressure in the negative pressure chamber to be lower than the external air pressure, so The negative pressure adsorption equipment communicates with the exhaust port of the negative pressure chamber through the second control valve and the quick connector. 2. The filling device according to claim 1, characterized in that: the negative pressure chamber includes an insertion chamber with a top opening for the matching insertion of the heat insulation pipe to be filled and a material communicating with the top of the insertion chamber. delivery channel. 3. The filling device according to claim 2, characterized in that: the conveying channel is arranged along the vertical direction and is coaxial with the insertion chamber. 4. The filling device according to claim 3, characterized in that: it also includes a sealing member that seals the top of the inner cavity of the heat insulation pipe to be filled, the top of the sealing member is conical and extends to the material In the discharge end of the conveying channel, the blocking member coincides with the axis of the conveying channel. 5. The filling device according to any one of claims 2-4, characterized in that: the base includes a lower seat and an upper seat that is sealed and detachable connected with the lower seat, and the insertion chamber is arranged on the On the lower seat, the material conveying channel is arranged in the upper seat and communicates with the hopper on the top of the upper seat. 6. The filling device according to claim 5, characterized in that the exhaust port is arranged on the side of the upper seat. 7. The filling device according to claim 5, characterized in that: the upper end surface of the lower seat is concavely formed with a chamber for matching and inserting the upper seat, and the upper seat is plugged and fixed in the chamber And it is sealed by a sealing member, and a counterbore is provided at the bottom of the chamber to form the insertion chamber. 8. An airgel heat-insulated pipe made using the filling device described in any one of claims 1-7, comprising an outer pipe and an inner pipe that are nested together, leaving a gap between the outer pipe and the inner pipe The hollow area is characterized in that: the inner pipe and the outer pipe are connected by an upper flange and a lower flange, and the hollow area is filled with airgel particles through the filling device. 9. The airgel heat insulation pipe according to claim 8, characterized in that: the bulk density of the airgel particles in the hollow area is 1.05-2.68g/cm^3. 10. The airgel heat insulation pipe according to claim 8, characterized in that: the airgel is silica airgel particles. 11. A low-temperature smoking appliance, characterized in that the airgel heat-insulating tube according to claims 8-10 is used as a heat-insulating member, and the inner cavity of the airgel heat-insulating tube constitutes a heating chamber of the low-temperature smoking appliance.