CN216934548U - Puncture device and fire extinguisher - Google Patents
Puncture device and fire extinguisher Download PDFInfo
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- CN216934548U CN216934548U CN202220645889.9U CN202220645889U CN216934548U CN 216934548 U CN216934548 U CN 216934548U CN 202220645889 U CN202220645889 U CN 202220645889U CN 216934548 U CN216934548 U CN 216934548U
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- needle
- limiting
- trigger element
- puncture needle
- thermal trigger
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Abstract
The utility model provides a puncturing device and a fire extinguisher, which comprise a body, a puncturing needle and a thermal trigger element, wherein the body is provided with an air outlet, the puncturing needle is arranged in an inner cavity of the body, and an elastic part for promoting the puncturing needle to move to a puncturing position is also arranged in the inner cavity of the body; a fixing cap is arranged on the side part of the body, and the inner cavity of the fixing cap is communicated with the inner cavity of the body; the thermal trigger element is arranged in the fixing cap, one end of the thermal trigger element acts on the tail end of the fixing cap, the other end of the thermal trigger element acts on the limiting piece arranged in the fixing cap, the limiting piece is made to act on the puncture needle, the puncture needle is made to be kept at a safe position, and when the puncture needle loses the limitation of the limiting piece, the puncture needle moves to a puncture position under the action of the elastic piece. The thermal trigger element is not contacted with the puncture needle, so that the thermal trigger element is prevented from being punctured accidentally.
Description
Technical Field
The utility model relates to the technical field of fire fighting equipment, in particular to a puncturing device and a fire extinguisher.
Background
The carbon dioxide fire extinguisher is a common one in fire fighting equipment, a steel cylinder of the fire extinguisher is filled with high-pressure carbon dioxide gas, and a bottle mouth is sealed by a safety diaphragm. The bottle mouth is provided with a puncture device, and when a local fire disaster is sent, the safety diaphragm can be automatically punctured to release carbon dioxide gas in the steel cylinder for fire extinguishing.
The Chinese application CN2020102973627 discloses an 'automatic puncturing device for a carbon dioxide steel cylinder for fire fighting', which comprises an inner core and an outer shell, wherein one end of the inner core is provided with an inner thread hexagonal joint, the inner thread hexagonal joint is in threaded connection with a cylinder head valve joint of the carbon dioxide steel cylinder, the other end of the inner thread hexagonal joint is connected with a hollow core pipe in a cast welding manner, the outer shell is movably sleeved on the outer wall of the hollow core pipe, one end, far away from the inner thread hexagonal joint, of the hollow core pipe is provided with a hemispheroidal groove, and the bottom of the hemispheroidal groove is provided with an air outlet; the novel safety syringe is characterized in that a puncture needle is movably arranged inside the hollow core tube and comprises a needle tail section and a needle head section, the needle head section and the needle tail section are both hollow structures and are communicated with each other, one end of the needle head section, which is close to the internal thread hexagonal joint, is abutted to a glass ball, the glass ball is connected with a safety diaphragm arranged in the bottle head valve joint, the needle tail section is cylindrical, and a compression spring is arranged between the needle tail section and the hemispherical groove. In case of fire, the glass ball can be exploded when encountering high temperature, and the puncture needle pierces the safety diaphragm by means of spring force, so that the carbon dioxide in the steel cylinder is released to extinguish fire.
The glass ball of the device is installed between sharp-pointed syringe needle and safety diaphragm, need overcome the spring force when the internal thread hexagonal joint is twisted on the bottle head valve joint, twist and move the internal thread hexagonal joint and do all can, and the glass ball does not carry out spacing fixed moreover, and the installation is unstable, and the glass ball receives the damage of sharp-pointed syringe needle very easily.
Disclosure of Invention
The utility model provides a puncturing device, wherein a thermal trigger element is not contacted with a puncturing needle, so that the thermal trigger element is prevented from being punctured accidentally.
The utility model provides a puncture device, which comprises a body, a puncture needle and a thermal trigger element, wherein the body is provided with an air outlet, the puncture needle is arranged in an inner cavity of the body, and an elastic part for promoting the puncture needle to move to a puncture position is also arranged in the inner cavity of the body; a fixing cap is arranged on the side part of the body, and the inner cavity of the fixing cap is communicated with the inner cavity of the body; the thermal trigger element is arranged in the fixing cap, one end of the thermal trigger element acts on the tail end of the fixing cap, the other end of the thermal trigger element acts on the limiting piece arranged in the fixing cap, the limiting piece is enabled to act on the puncture needle, the puncture needle is enabled to be kept at a safe position, and when the puncture needle loses the limitation of the limiting piece, the puncture needle moves to a puncture position under the action of the elastic piece.
The thermal trigger element and the limiting piece are arranged on the outer side of the body, the thermal trigger element is arranged between the limiting piece and the fixing cap, the thermal trigger element is protected, and the thermal trigger element is not connected with sharp objects such as a puncture needle and the like, so that the thermal trigger element is prevented from being damaged.
Preferably, the lancet is provided with a limiting groove, and the action end of the limiting part acts in the limiting groove, so that on one hand, the limiting part is matched with the limiting groove to more stably keep the lancet at the safe position, and on the other hand, after the thermal trigger element is broken, the limiting part loses the acting force applied by the thermal trigger element, and when the elastic element drives the lancet to move towards the puncturing position, the limiting part can be disengaged from the limiting groove.
Preferably, the puncture needle comprises a needle head and a needle seat, and the limiting groove is arranged on the outer wall of the needle seat.
In order to enable the limiting part to be easily disengaged from the limiting groove, the action end of the limiting part is spherical, hemispherical or truncated cone-shaped, or the limiting part comprises a limiting pin and a round ball, a semi-round ball and a truncated cone which are contacted with the limiting pin; the cross section of the limiting groove is in an inverted trapezoid shape or an arc shape. The spherical shape, the semi-spherical shape and the boss shape are matched with the inverted trapezoid shape and the circular arc shape, so that the separation from the limit groove is easier. The limiting groove is not too deep, and the pricking pin is clamped at a safe position by the limiting piece.
Preferably, the end of the thermal trigger element is a pointed end, and the pointed end is inserted into the avoiding groove at the end of the limiting part, so that the thermal trigger element is more stably contacted with the limiting part, and/or the tail end of the fixing cap is arc-shaped, so that a limiting part for limiting the thermal trigger element is formed, and the thermal trigger element is prevented from shaking in the fixing cap.
Preferably, the resilient member is a compression spring having one end acting on the body and the other end acting on the lancet. A spring mounting slot can be provided at the end of the spike with the end of the spring being disposed within the spring mounting slot.
Preferably, the fixing cap is provided with a vent hole, and the thermal trigger element can better sense the external temperature change.
Preferably, a fixing seat is arranged on the side of the body, and the fixing cap is mounted on the fixing seat, or the fixing cap is mounted on the fixing seat through a cross joint.
In order to facilitate the installation of the puncture needle and the elastic part and the assembly, the body comprises a first body and a second body which are detachably connected, and the fixing cap is arranged on the first body.
The utility model also provides a fire extinguisher, which comprises a bottle body, wherein the mouth part of the bottle body is provided with a sealing film, the mouth part of the bottle body is provided with the puncturing device, and when a puncturing needle of the puncturing device moves to a puncturing position, the puncturing needle punctures the sealing film.
The thermal trigger element, the limiting piece and the like are arranged on the outer side of the body, the puncturing device limits the puncturing needle before being connected with the steel cylinder, the puncturing device and the steel cylinder are two independent parts, and the body of the puncturing device can be easily screwed on the steel cylinder. The thermal trigger element is arranged between the limiting part and the fixing cap, protects the thermal trigger element, is not connected with sharp objects such as a puncture needle and the like, and avoids the occurrence of the damaged condition of the thermal trigger element.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a state view of the puncturing position of the present invention;
FIG. 3 is an exploded view of the present invention;
FIG. 4 is a schematic view of the lancet of the present invention.
In the figure: 1-body; 1.1-a first body; 1.1.1-internal thread; 1.1.2-fixed seat; 1.1.3-avoiding hole; 1.2-a second body; 1.2.1-air outlet; 2-pricking pin; 2.1-needle head; 2.2-needle seat; 2.3-spring mounting groove; 2.4-a limit groove; 3-compression spring; 4-a limiting member; 4.1-round ball; 4.2-a limit pin; 4.3-avoidance groove; 5-a thermal trigger element; 5.1-cusp; 6-fixing the cap; 6.1-air holes; 7-a cross joint; 8-steel cylinder; 9-sealing film; 10-valve body joint.
Detailed Description
The utility model provides a puncture device and a miniature fire extinguisher, wherein the puncture device is easily connected with a steel cylinder and is used for limiting and protecting a glass ball.
Example 1:
the puncturing device comprises a body 1, wherein one end of the body 1 is provided with an internal thread 1.1.1 which is opened and is used for being connected with a steel cylinder, a cavity is arranged in the body 1, the tail part of the body 1 is provided with an air outlet 1.2.1, and the air outlet 1.2.1 is communicated with the cavity. The puncture needle 2 is movably arranged in the cavity, the puncture needle 2 comprises a needle head 2.1 and a needle seat 2.2, the needle head 2.1 and the needle seat 2.2 are both hollow structures and are communicated with each other, and the hollow structures are beneficial to releasing extinguishing gas through the inner cavity of the puncture needle after puncturing a sealing membrane on a steel cylinder. The needle seat 2.2 is connected with the tail end of the body 1 through a compression spring 3, so that the needle head 2.1 moves towards one end provided with the internal thread 1.1.1 by means of spring force. The needle file 2.2 is kept away from the one end of syringe needle 2.1 and is equipped with spring mounting groove 2.3, and compression spring 3's one end is installed in spring mounting groove 2.3, and the other end offsets with the tail end of body 1. In order to facilitate the installation of the puncture needle 2 and the compression spring 3, the body is arranged into a split structure and comprises a first body 1.1 and a second body 1.2, the first body 1.1 is in threaded connection with the second body 1.2, an internal thread 1.1 is arranged at one end of the first body 1.1, an air outlet hole 1.2.1 is arranged on the second body 1.2, and the compression spring 3 is arranged between the needle seat 2.2 and the second body 1.2.
The outside of the body 1 (when adopting the split structure, set up in the outside of the first body 1.1) has pricker spacing release mechanism, this pricker spacing release mechanism can make the pricker keep the safe position when not having the fire disaster; when a fire occurs, the puncture needle is released and runs to a puncture position by means of spring force. The limiting and releasing mechanism comprises a limiting piece 4, a limiting groove 2.4 matched with the limiting piece is formed in the outer wall of a needle base 2.2, and a avoiding hole 1.1.3 for the limiting piece 4 to penetrate is formed in the side wall of the body 1. The limiting part can be a limiting pin with a hemispherical, spherical or truncated cone-shaped end part, or a sphere 4.1 (also a semi-sphere or a boss) and a limiting pin 4.2 are separated. One end, far away from limiting groove 2.4, of limiting part 4 is connected with thermal trigger element 5, thermal trigger element 5 is sleeved with a cylindrical fixing cap 6 and abuts against the tail end of fixing cap 6, the tail end of fixing cap 6 is arc-shaped, a limiting part is formed, thermal trigger element 5 is limited to a certain extent, and thermal trigger element 5 is prevented from sliding freely in the fixing cap. The fixing cap 6 is in threaded connection with the fixing seat 1.1.2 on the outer side of the body 1, and the fixing cap 6 is provided with the air holes 6.1, so that the thermal trigger element 5 can sense the external temperature. One end of the thermal trigger element 5, which is connected with the limiting piece 4, is provided with a pointed end 5.1, one end of the corresponding limiting piece 4, which is connected with the thermal trigger element 5, is provided with an avoiding groove 4.3, and the pointed end 5.1 is inserted into the avoiding groove 4.3. The thermal trigger element can be an object which is easy to break after being heated, such as an alcohol bottle and the like, can be broken when being heated, and can also be broken at an accelerated speed after being heated and expanded by arranging gas, liquid and the like which are easy to expand in the thermal trigger element.
The fixing cap 6 is screwed up gradually in threaded connection with the body 1, so that the thermal trigger element pushes the hemispherical or truncated cone shaped end of the stopper 4 or the spherical ball connected with the stopper pin into the stopper groove 2.4 of the needle holder 2.2, thereby keeping the puncture needle 2 in a safe position. When a fire disaster happens, the thermal trigger element 5 is cracked by heat, the resistance force to the limiting piece 4 is lost, the limiting piece 4 is not limited to the needle seat 2.2, and the felting needle 2 moves to the piercing position by the elastic force of the compression spring 3.
During specific assembly, the puncture needle can be firstly placed into the inner cavity of the first body 1.1, the limiting groove 2.4 is aligned with the avoidance hole 1.1.3, then the limiting piece 4 is inserted into the limiting groove, the thermal trigger element 5 is connected with the limiting piece 4, the thermal trigger element 5 is externally sleeved with the fixing cap 6, and the fixing cap 6 and the first body 1.1 are screwed in place; the compression spring 3 is placed in the first body 1.1, and finally the second body 1.2 is screwed with the first body 1.1, so that the compression spring has an elastic force to the puncture needle.
The fixing seat 1.1.2 is provided with a through hole which is communicated with the avoiding hole 1.1.3. The limiting piece 4 is arranged in the through hole of the fixed seat 1.1.2. The fixing seat 1.1.2 can be connected with the fixing cap 6 through a cross joint 7 with two ends being external threads.
Example 2:
miniature fire extinguisher, including steel bottle 8, the bottleneck of steel bottle 8 is provided with seal membrane 9, and 8 bottleneck threaded connection of steel bottle have embodiment 1's puncture device, and body 1 sets up internal screw thread one end and is connected with 8 bottlenecks of steel bottle. The steel cylinder 8 is filled with carbon dioxide gas. A valve body joint 10 can also be arranged at the mouth of the steel cylinder 8, the valve body joint 10 is used for pressing the sealing membrane 9, and the puncture device is connected with the valve body joint 10. Because the puncture device is an independent component, after the puncture device is assembled, the stop piece keeps the puncture needle at a safe position, the puncture device can be directly held and screwed on the steel cylinder, and the worry that the sealing membrane is punctured in the assembling process is avoided.
When a fire disaster happens, the thermal trigger element 5 is cracked by heat, the limitation on the puncture needle 2 is removed, the puncture needle 2 moves towards the steel cylinder 8 by means of elastic force, and therefore the sealing membrane 9 at the opening of the steel cylinder 8 is punctured, and carbon dioxide in the steel cylinder is released to extinguish the fire.
Claims (10)
1. The utility model provides a puncture device, includes body, felting needle and hot trigger element, be provided with the venthole on the body, its characterized in that: the puncture needle is arranged in the inner cavity of the body, and an elastic element for promoting the puncture needle to move to a puncture position is also arranged in the inner cavity of the body; a fixing cap is arranged on the side part of the body, and the inner cavity of the fixing cap is communicated with the inner cavity of the body; the thermal trigger element is arranged in the fixing cap, one end of the thermal trigger element acts on the tail end of the fixing cap, the other end of the thermal trigger element acts on the limiting piece arranged in the fixing cap, the limiting piece is enabled to act on the puncture needle, the puncture needle is enabled to be kept at a safe position, and when the puncture needle loses the limitation of the limiting piece, the puncture needle moves to a puncture position under the action of the elastic piece.
2. A lancing device according to claim 1, wherein: the pricking pin is provided with a limiting groove, and the action end of the limiting part acts in the limiting groove.
3. The lancing device of claim 2, wherein: the puncture needle comprises a needle head and a needle seat, and the limiting groove is arranged on the outer wall of the needle seat.
4. The lancing device of claim 2, wherein: the action end of the limiting piece is spherical, hemispherical or truncated cone-shaped, or the limiting piece comprises a limiting pin and a round ball, a semi-round ball and a truncated cone which are contacted with the limiting pin; the cross section of the limiting groove is in an inverted trapezoid shape or an arc shape.
5. A lancing device according to any of claims 1 to 4, wherein: the end part of the thermal trigger element is a pointed end which is inserted into the avoiding groove at the end part of the limiting part, and/or the tail end of the fixing cap is arc-shaped to form a limiting part for limiting the thermal trigger element.
6. A lancing device according to any of claims 1 to 4, wherein: the elastic member is a compression spring, one end of which acts on the body and the other end of which acts on the puncture needle.
7. A lancing device according to any of claims 1 to 4, wherein: the fixing cap is provided with air holes.
8. A lancing device according to any of claims 1 to 4, wherein: the body lateral part is provided with the fixing base, the locking cap is installed on the fixing base, perhaps, the locking cap passes through the cross joint and installs on the fixing base.
9. A lancing device according to any of claims 1 to 4, wherein: the body includes first body and the second body of connection can be dismantled, the locking cap is installed on the first body.
10. The utility model provides a fire extinguisher, includes the bottle, the oral area of bottle is provided with seal membrane, its characterized in that: the mouth of the bottle body is provided with a puncturing device as claimed in any one of claims 1 to 9, wherein when the needle of the puncturing device is moved to the puncturing position, the needle punctures the sealing membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220645889.9U CN216934548U (en) | 2022-03-23 | 2022-03-23 | Puncture device and fire extinguisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220645889.9U CN216934548U (en) | 2022-03-23 | 2022-03-23 | Puncture device and fire extinguisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216934548U true CN216934548U (en) | 2022-07-12 |
Family
ID=82298018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220645889.9U Active CN216934548U (en) | 2022-03-23 | 2022-03-23 | Puncture device and fire extinguisher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216934548U (en) |
-
2022
- 2022-03-23 CN CN202220645889.9U patent/CN216934548U/en active Active
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