CN111347375B - A liquid nitrogen nail gun device - Google Patents

Abstract

The invention relates to a liquid nitrogen nail gun device. Comprises a gun barrel, a gasification chamber, a motor and a handle; the gun barrel is positioned at the uppermost part of the nail gun, and the lower part of the gun barrel is connected with the upper port of the gasification chamber; the upper port of the gasification chamber is of a necking structure; a liquid inlet is arranged on one side of the top of the gasification chamber; the gasification chamber is of a double-layer structure, and a vacuum interlayer is arranged between the inner wall and the outer wall of the gasification chamber; the inside of the gasification chamber is provided with fan blades, the fan blades are connected with a motor through a connecting metal bearing, and the motor is connected with a handle. The gasification chamber is a power generation cavity required by the nail shooting and is used for storing liquid nitrogen and water, and finally the liquid nitrogen is gasified to generate pressure; the fan blades are started to rotate quickly through the motor, liquid nitrogen and water are mixed quickly through the fan blades rotating quickly in the gasification chamber, the gasification rate of the liquid nitrogen is increased sharply when the liquid nitrogen meets water, and the produced high pressure provides power to enable the nails to be ejected quickly. The invention solves the problem of unsafe problem caused by heating in the using process of the traditional nail gun; the device has the characteristics of simple structure, potential safety hazard elimination and environmental protection.

Description

A liquid nitrogen nail gun device

technical field

The technical solution of the present invention relates to a liquid nitrogen nail gun device, specifically a kinetic energy generating device that generates instantaneous high pressure through rapid gasification of liquid nitrogen to generate kinetic energy.

Background technique

A nail gun, a tool used to drive nails into wood, walls, etc., has in many ways replaced the hammer as the builder's tool of choice. Existing nail guns can be mainly divided into pneumatic nail guns, powder-driven nail guns, combustion-powered nail guns, electric nail guns, and electromagnetic-driven nail guns according to the source of power. These nail guns usually use compressed air (pneumatic), electromagnetic drive, highly flammable gas or gunpowder to gasify in the cavity, thereby forming power, and the nail is shot out by the nail gun needle. The problem that present nail gun exists is: the first, for the nail gun of electric and combustion power, especially be the nail gun of power with combustion, its nail can produce a large amount of heat simultaneously when launching, and this is more important to dust. For many construction environments, it is very dangerous; second, the traditional gas burning or gunpowder bullet nail gun, the fuel itself or after burning and gasification will produce harmful physics to the environment, which is not environmentally friendly. Second, for the electric nail gun, the electric nail gun consumes a large amount of electricity, and its need to be accompanied by a high-power power supply also limits its working range.

Contents of the invention

The technical problem to be solved by this invention is to provide a new type of nail gun scheme and device that relies on liquid nitrogen gasification to generate power for the defects and insufficiencies of existing nail guns. The realization of this kind of nail gun will solve the problem of traditional nail guns. Unsafe problems caused by heat during use; liquid nitrogen green cleaning avoids harmful substances that may be produced after traditional gas combustion and gunpowder bullet gasification; the start-up of the involved liquid nitrogen nailing device requires a small amount of electricity, It solves the problem of large power consumption of traditional electric nail guns. The device as a whole has the characteristics of simple structure, elimination of potential safety hazards and environmental protection.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A liquid nitrogen nail gun device, including a gun barrel, a gasification chamber, a motor and a handle; it is characterized in that the gun barrel is located at the top of the nail gun, and its lower part is connected to the upper port of the gasification chamber; the upper port of the gasification chamber is Shrink structure; the top side of the gasification chamber is provided with a liquid inlet; the gasification chamber is a double-layer structure, and there is a vacuum interlayer between the inner wall and the outer wall of the gasification chamber; fan blades are arranged inside the gasification chamber. The leaf is connected to the motor by connecting metal bearings, and the motor is connected to the handle.

A magnet is fixed on the side wall of the upper end of the gun barrel, and the position of the magnet is consistent with the position of the nail in the gun barrel.

The gasification chamber is a power generating chamber required for nailing, and is used for storing liquid nitrogen and water, and finally the liquid nitrogen is gasified to generate pressure.

The necking type structure of the gasification chamber is that the upper end of the necking is consistent with the gun barrel.

The gasification chamber has a double-layer structure, consisting of an outer wall and an inner wall, and an interlayer in a vacuum state is formed between the inner wall and the outer wall to enhance the heat insulation performance of the gasification wall, and an adsorbent is installed in the interlayer.

The outer wall of the gasification chamber is provided with a protective sheath layer, which acts as a shock absorber.

The top of the gasification chamber is a necked structure, the upper end of the necked mouth is consistent with the gun barrel, and the height of the connection with the gun barrel is 1/6 to 1/5 of the overall height of the upper and lower sides of the gasification chamber, and the lower end of the necked mouth is the same as the upper end of the gasification chamber. unanimous.

The top side of the gasification chamber is provided with a liquid inlet, and the height of the liquid inlet is 1/5 to 1/4 of the overall height of the gasification chamber. There is an adsorbent around the contact part, and a gap is designed on the top of the liquid inlet to discharge the nitrogen evaporated from the vaporization chamber to ensure safety, and it must also have thermal insulation performance to reduce the evaporation of liquid nitrogen.

The bottom of the gasification chamber is a motor, and the top of the motor is connected to the fan blade through a metal bearing. The fan blade extends into the gasification chamber, and the motor is wrapped with a motor casing. A motor switch is provided on one side of the casing for turning on the trigger switch.

The motor is connected with the handle, and the handle itself is composed of a handle, a slot, and a chute track. The outside of the motor shell is connected with the handle through the slot provided at the bottom of the handle, and the chute track is convenient for hand-held operation.

The working principle of the device of the present invention is designed to start the fan blades to rotate rapidly through the motor, and quickly mix liquid nitrogen and water through the rapidly rotating fan blades in the gasification chamber. Nails shoot out quickly. Based on this principle, this design is to quickly mix liquid nitrogen and water through rapid stirring, so that the liquid nitrogen is rapidly vaporized, and the strong pressure generated will eject the nail from the nozzle at a high speed, so that the penetration of the object can be achieved. Purpose.

The beneficial effects of the present invention are: solve the unsafe problem caused by the heating of traditional nail guns during use; liquid nitrogen green cleaning avoids the harmful substances that may be produced after traditional gas combustion and gunpowder bullet gasification; the liquid nitrogen involved The start-up of the nailing device requires very little power, which solves the problem of large power consumption of traditional electric nail guns. The device as a whole has the characteristics of simple structure, elimination of potential safety hazards and environmental protection.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is an overall appearance diagram of a liquid nitrogen nail gun.

Fig. 2 is a structural schematic diagram of a liquid nitrogen nail gun device.

Fig. 3 is a partially enlarged view of the wall structure of the gasification chamber of the liquid nitrogen nail gun.

Fig. 4 is a schematic diagram of the structure of the handle.

Fig. 5 is a partially enlarged view of the spring buckle track structure at the bottom of the handle.

Explanation of reference signs:

1. Gun barrel; 2. Gasification chamber; 3. Gasification chamber wall; 4. Motor, 5. Motor switch; 6. Fan blade, 7. Handle, 8. Liquid inlet; 9. Magnet; 10. Metal bearing , 11, shaft sleeve, 12, nailing.

701, handle; 702, card slot; 703, chute track.

7031, piston; 7032, spring.

301, the gasification chamber protective cover; 302, the outer wall of the gasification chamber; 303, the interlayer of the gasification chamber wall; 304, the inner wall of the gasification chamber.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Words indicating orientation or position such as "bottom" are only based on the orientation or positional relationship shown in the drawings, and are only simplified descriptions relative to the positional relationship in the drawings of the present invention, rather than requiring that the described devices or components must be in accordance with The described positional relationship or orientation structure, so the description of the positional relationship in this part should not be construed as limiting the present invention.

Example 1

Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5. Embodiment 1 of the present invention provides a liquid nitrogen nail gun. The gun body itself includes a barrel 1, a gasification chamber 2, and a gasification chamber wall 3. Motor 4, motor switch 5, fan blade 6, handle 7, liquid inlet 8 and magnet 9, metal bearing 10, axle sleeve 11 and nail 12. The gun barrel 1 is arranged above the gasification chamber 2, and the lower end of the gun barrel 1 is connected to the upper port of the gasification chamber 2 through a shaft sleeve 11. The matching stepped card slot has an internal thread structure at the other end, through which the internal thread mechanism is connected with the external thread on the upper port of the gasification chamber. The entire barrel structure is simple and easy to disassemble. The nail 12 is placed in the gun barrel, and the nail is absorbed by the magnet 9 installed on one side of the gun barrel to prevent the nail from moving in the gun barrel. The gasification chamber is a power generating chamber required for nailing, and is used for storing liquid nitrogen and water, and finally the liquid nitrogen is gasified to generate pressure. The top of the gasification chamber is a necked structure, the upper end of the necking is connected to the gun barrel, and the height of the connection with the gun barrel is 1/6 of the overall height of the gasification chamber. The gasification chamber wall 3 includes a gasification outer casing 301, a gasification outer wall 302, a gasification inner wall 303 and a gasification chamber wall interlayer 304. The gasification chamber interlayer is filled with adsorbent alumina, and the gasification outer casing 301 is made of silica gel. Floor. A liquid inlet 8 is provided on the top side of the vaporization chamber, and the height of the liquid inlet is 1/5 of the overall height of the vaporization chamber; a motor 5 is provided under the vaporization chamber 2, and the two are tightly interlocked together. A fan blade 6 is arranged at the inner bottom of the gasification chamber 2 , and the fan blade 6 is connected with the motor 4 through a metal bearing 10 . The bottom of the handle 7 is provided with a handle 701, a draw-in groove 702, and a chute track 703; the chute track 703 is provided with a piston 7031 and a spring 7032; the handle 7 is fixed to the bottom of the motor 4 through the draw-in groove 702 and the chute track 703 connect.

The gasification chamber wall 3 includes a gasification chamber protective cover 301 , a gasification outer wall 302 , a gasification inner wall 303 and a gasification chamber wall interlayer 304 . The gasification chamber protective cover 301 is the outer layer of the gasification outer wall 302, the gasification inner wall 303 is the gasification inner layer, and the gasification chamber wall interlayer 303 is the gap between the gasification outer wall 302 and the gasification inner wall 304. The bottleneck 4 of the vaporization chamber connects the outer wall 302 of the vaporization chamber with the inner wall 304 of the vaporization chamber, the liquid inlet 8 is located on the upper side of the vaporization chamber 2 , and the magnet 9 is installed on the bottom side of the gun barrel 1 .

According to the above-mentioned device, the operation method for shooting nails is as follows: place the nails in the gun barrel 1, absorb them at the magnet 9, connect the gun barrel 1 with the upper port of the gasification chamber through the shaft sleeve 11; There are external threads, and the upper end of the motor 4 shell is a matching internal thread, and the gasification chamber 2 is connected with the motor 4 through a threaded structure; pull the handle 7 on both sides, and the piston 7031 and the compression spring 7032 arranged in the chute track 703 will be connected with the Put the bottom end of the motor 4 connected to the gasification chamber 2 into the chute track 703 and pass through the card slot 702 to lock it to complete the connection between the motor 4 shell and the handle 7; inject liquid nitrogen and water into the gas through the liquid inlet 8 successively. In the gasification chamber, close the liquid inlet 8; during work, hold the handle 701 to touch the motor switch 5 to start the motor, and the motor 4 drives the fan blade 6 in the gasification chamber to rotate rapidly, and the liquid nitrogen and the The water is mixed quickly, and the gasification rate of liquid nitrogen increases sharply when it meets water, and the high pressure generated drives the nail to be ejected quickly.

The designs of existing nail guns on the market mainly include spring-loaded nail guns, electromagnetic nail guns, pneumatic nail guns and deflagration nail guns. For the spring-loaded nail gun, the motor is used to trigger the nail gun, and the hammering device is driven by the compressed mechanical spring; for the electromagnetic nail gun, the solenoid is used as the hammering device, and the solenoid is installed with a slide The piston is made of magnetic material. When the trigger is pulled and the current passes through the solenoid, the electromagnetic field generated and the magnetic piston are mutually repelled, and the piston is pushed out, and the nail is quickly touched to send it out; for the pneumatic nail gun, the hammer The impact force comes from compressed air. The nail gun is connected to an air compressor, and the compressed air is continuously input into the air storage chamber of the nail gun through a hose, and the compressed air in the air storage chamber pushes the piston to drive the nail to shoot out quickly. ; For the deflagration nail gun, its driving structure is similar to the pneumatic nail gun, the difference is that the source of the air pressure difference is different, the deflagration nail gun has a gas storage chamber full of combustible gas, and the electronic control device will make it The spark plug in the combustion chamber sends out an electric spark, which ignites the gas and causes a small explosion. The pressure of the explosion pushes the piston, and finally the nail is ejected under the push of the piston. As for the liquid nitrogen nail gun involved in the present invention, the motor is used to drive the rotation of the mechanical screw blade to quickly mix the liquid nitrogen and water in the gasification chamber, and rely on the air pressure generated by the gasification of the liquid nitrogen to push the nails out. The design device Simple and easy to operate. The design of the whole device in the present invention adopts clean and pollution-free liquid nitrogen as the power source on the one hand, and the green and clean liquid nitrogen avoids the harmful substances that may be produced after traditional gas combustion and gunpowder bullet gasification; There are unsafe problems caused by heating in the work engineering, because the liquid nitrogen (77K) used in the present invention does not have the problem of heating; finally, the motor used for starting the liquid nitrogen nailing device involved in the present invention only needs a small amount of electricity , Solve the problem of large power consumption of traditional electric nail guns.

Claims (8)

1. A liquid nitrogen nail gun device comprises a gun barrel, a gasification chamber, a motor and a handle; it is characterized in that the gun barrel is positioned at the uppermost part of the nail gun, and the lower part of the gun barrel is connected with the upper port of the gasification chamber; the upper port of the gasification chamber is of a necking structure; a liquid inlet is arranged on one side of the top of the gasification chamber; the gasification chamber is of a double-layer structure, and a vacuum interlayer is arranged between the inner wall and the outer wall of the gasification chamber; the inside of the gasification chamber is provided with fan blades which are connected with a motor through a connecting metal bearing, and the motor is connected with a handle; a magnet is fixed on one side wall of the upper end of the gun barrel, and the position of the magnet is consistent with the position of a nail in the gun barrel; the gasification chamber is a power generation cavity required by the shooting nail and is used for storing liquid nitrogen and water, and finally the liquid nitrogen is gasified to generate pressure.

2. A liquid nitrogen nail gun apparatus as claimed in claim 1, wherein the vaporizing chamber has a throat structure in which an upper end of the throat coincides with the barrel and a lower end of the throat coincides with an upper end of the vaporizing chamber.

3. The liquid nitrogen nail gun device according to claim 1, wherein said vaporizing chamber has a double-layered structure consisting of an outer wall and an inner wall, and an interlayer evacuated to a vacuum state is provided between the inner wall and the outer wall to enhance the heat insulating property of the vaporizing wall, and an adsorbent is filled in the interlayer.

4. A liquid nitrogen nail gun device as claimed in claim 1, wherein the outer layer of the outer wall of the gasification chamber is provided with a protective sheath layer for shock absorption.

5. A liquid nitrogen nail gun device as claimed in claim 1, wherein the top of the vaporizing chamber is of a necking structure, the upper end of the necking is in line with the gun barrel, and the height of the upper end of the necking is 1/6-1/5 of the height of the upper and lower whole portions of the vaporizing chamber.

6. The liquid nitrogen nail gun device as claimed in claim 1, wherein a liquid inlet is provided at one side of the top of the gasification chamber, the height of the liquid inlet is 1/5-1/4 of the overall height of the gasification chamber, the liquid inlet extends into the gasification chamber, an adsorbent is provided around the contact part of the liquid inlet and the inner and outer walls of the gasification chamber, and a gap is provided at the top of the liquid inlet to discharge nitrogen evaporated from the gasification chamber, thereby ensuring safety, having thermal insulation performance and reducing liquid nitrogen evaporation.

7. The liquid nitrogen nail gun device as claimed in claim 1, wherein a motor is provided under the gasification chamber, a motor is provided over the motor and connected to a fan blade via a metal bearing, the fan blade extends into the gasification chamber, the motor is externally wrapped by a motor housing, and a motor switch is provided on one side of the housing for connecting a trigger switch.

8. The liquid nitrogen nail gun device as claimed in claim 1, wherein the motor is connected with the handle, the handle is composed of a handle, a slot and a chute rail, and the outside of the motor shell is connected with the handle through the slot and the chute rail arranged at the bottom of the handle, so as to facilitate the hand-held operation.

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