Puncture needle applied to fire extinguisher and capable of guiding air ultrafast

Abstract

The pricking needle comprises a valve rod and a pricking needle body, a threaded blind hole is formed in the bottom of the valve rod, guide strips are welded to the left end and the right end of the bottom of the valve rod, the guide strips are located on the left side and the right side of the threaded blind hole, the pricking needle body is located under the valve rod, and a connector is welded to the top of the pricking needle body. The upper end of the connector is upwards inserted into the threaded blind hole, a tip is arranged at the bottom of the pricking needle, a first air guide groove and a second air guide groove are formed in the outer surface of the pricking needle, a plurality of air guide through holes are evenly formed in the bottom face of the first air guide groove, and reinforcing ribs are embedded in the pricking needle. According to the high-pressure gas cylinder, the first gas guide groove and the second gas guide groove are arranged in a matched mode, the first gas guide groove and the second gas guide groove can form a double-lead spiral structure, gas outlets are formed in the outer circumferential face of the pricking needle, the gas outlet area can be effectively increased, the gas outlet amount of the high-pressure gas cylinder can be increased, and the gas guide efficiency is greatly improved; and the spraying speed of the fire extinguisher for spraying fire extinguishing substances is increased.

Description

Technical Field

[0001] The invention relates to the technical field of fire extinguishers, in particular to a lancet capable of ultra-fast gas conduction used in a fire extinguisher. Background Art

[0002] Some models of fire extinguishers are equipped with a high-pressure gas cylinder. When the fire extinguisher is in use, open the safety ring and press the air release valve. The needle connected to it will pierce the seal of the high-pressure gas cylinder, allowing the high-pressure flame-retardant gas in the high-pressure gas cylinder to quickly enter the fire extinguisher. Then the fire extinguishing substance in the fire extinguisher is sprayed out from the nozzle under the pressure of the high-pressure gas, thereby achieving the purpose of extinguishing the fire.

[0003] As attached Figure 1 The current stinger needles are all made of iron sheets rolled into a cylindrical shape, with an air outlet on the side and then sharpened at the bottom. However, the tip is on the outer section of the cylinder, which makes the force not concentrated, making it difficult for the stinger needle to pierce the seal of the high-pressure gas cylinder, and even causes the stinger needle to bend. In addition, the current stinger needle has a small air guide groove area and low air guide efficiency. The speed of air guide directly affects the speed of the fire extinguisher spraying the fire extinguishing substance. For this reason, we propose a stinger needle that can be used in a fire extinguisher to conduct air at an ultra-fast speed to solve the above-mentioned technical problems. Summary of the invention

[0004] The present invention provides a lancet for fire extinguishers capable of ultra-fast gas conduction to solve the problems raised in the above background technology that the current lancet tip is eccentric, the force is not concentrated, it is difficult to pierce the seal of a high-pressure gas cylinder, and the area of ​​the lancet gas conduction groove is small, resulting in low gas conduction efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A needle used in fire extinguishers for ultra-fast gas conduction comprises a valve stem and a needle. A threaded blind hole is provided at the bottom of the valve stem. Guide strips are welded to the left and right ends of the bottom of the valve stem. The guide strips are located on the left and right sides of the threaded blind hole. The needle is located directly below the valve stem. A connector is welded to the top of the needle. The upper end of the connector is inserted upward into the threaded blind hole. A pointed tip is provided at the bottom of the needle. A first gas guide groove and a second gas guide groove are provided on the outer surface of the needle. A plurality of gas guide through holes are evenly provided on the bottom surface of the first gas guide groove. Reinforcing ribs are embedded in the interior of the needle.

[0007] Furthermore, the guide strips are symmetrically arranged on the left and right sides of the needle, and the bottom of the guide strips is a pointed end.

[0008] Furthermore, the tip of the bottom of the guide strip is located above the pointed head.

[0009] Furthermore, the first air guiding groove and the second air guiding groove are both opened in a spiral shape along the outer surface of the needle, and the first air guiding groove and the second air guiding groove form a double-guide structure.

[0010] Furthermore, the bottom of the pointed tip is located on the center line of the needle.

[0011] Furthermore, the reinforcing rib is located on the center line of the needle.

[0012] Compared with the prior art, the present invention achieves the following beneficial effects:

[0013] 1. Through the coordinated arrangement of the first air guide groove and the second air guide groove, the first air guide groove and the second air guide groove can form a double-lead spiral structure, so that the outer circumferential surface of the needle is provided with an air outlet, which can effectively increase the air outlet area, increase the air outlet volume of the high-pressure gas cylinder, greatly improve the air guide efficiency, and improve the spray speed of the fire extinguishing material sprayed by the fire extinguisher; and the air guide through hole is arranged on the surface of the first air guide groove, so that the upper and lower adjacent first air guide grooves can be connected, so that the high-pressure gas can flow up and down faster, and the air guide efficiency is further improved.

[0014] 2. By setting the tip on the center line of the needle, the force generated by the needle when puncturing can be more concentrated on one point, so that it will be easier and smoother to puncture the seal of the high-pressure gas cylinder; and embedding a reinforcing rib inside the needle can improve the structural strength of the needle and prevent the needle from bending.

[0015] 3. The guide strip at the bottom of the valve stem can provide guidance when the needle is puncturing, prevent the needle from bending, and assist the needle in puncturing. At the same time, the guide strip can reduce the contact area between the needle and the seal of the high-pressure gas cylinder, reduce the friction between the outer surface of the needle and the seal of the high-pressure gas cylinder, and further improve the smoothness of the needle puncturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the needle structure of the prior art.

[0017] Figure 2 It is a structural schematic diagram of the present invention.

[0018] Figure 3 It is a schematic structural diagram of the needle of the present invention.

[0019] Figure 4 It is a half-section view of the needle of the present invention.

[0020] Figure 5 is a cross-sectional view of the needle of the present invention.

[0021] Figure 2-5Middle: 1-valve stem, 101-threaded blind hole, 2-guide strip, 3-thorn needle, 301-first air guide groove, 302-second air guide groove, 303-air guide hole, 304-pointed head, 4-connector, 5-reinforcement rib. DETAILED DESCRIPTION

[0022] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0023] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0024] See also Figures 2 to 5 :

[0025] The present invention provides a needle capable of ultra-fast gas conduction for use in a fire extinguisher, comprising a valve stem 1 and a needle 3. The components of the needle capable of ultra-fast gas conduction for use in a fire extinguisher are described in detail below:

[0026] A threaded blind hole 101 is formed at the bottom of the valve stem 1, and guide strips 2 are welded to both left and right ends of the bottom of the valve stem 1. The guide strips 2 are located on the left and right sides of the threaded blind hole 101;

[0027] Specifically, the threaded blind hole 101 can be threadedly connected with the connector 4 of the puncture needle 3, so that the puncture needle 3 can be installed at the bottom of the valve stem 1, and the guide strip 2 can provide a guiding effect after the tip 304 of the puncture needle 3 pierces the seal of the high-pressure gas cylinder to prevent the puncture needle 3 from bending and assist the puncture of the puncture needle 3. At the same time, the guide strip 2 can reduce the contact area between the outer side of the puncture needle 3 and the seal of the high-pressure gas cylinder, reduce the friction between the outer surface of the puncture needle 3 and the seal of the high-pressure gas cylinder, and further improve the puncture smoothness of the puncture needle 3;

[0028] According to the above description, the needle 3 is located directly below the valve stem 1, a connector 4 is welded on the top of the needle 3, the upper end of the connector 4 is inserted upward into the threaded blind hole 101, a pointed tip 304 is provided at the bottom of the needle 3, a first air guide groove 301 and a second air guide groove 302 are provided on the outer surface of the needle 3, a plurality of air guide holes 303 are evenly provided on the bottom surface of the first air guide groove 301, and a reinforcing rib 5 is inlaid inside the needle 3;

[0029] Specifically, when the needle 3 pierces the sealing portion of the high-pressure gas cylinder, since the first gas guide groove 301 and the second gas guide groove 302 are both concave structures, and the first gas guide groove 301 and the second gas guide groove 302 can form a double-lead spiral structure, Figure 5 As shown, the entire outer circumference of the needle 3 is mostly in an open state, which can effectively increase the gas outlet area of ​​the needle 3, so that the outer circumference of the needle 3 can be used for gas outlet, so the gas outlet of the high-pressure gas cylinder is greatly increased, and the gas guide efficiency of the needle is also significantly improved. Therefore, when the high-pressure air flow rate entering the fire extinguisher increases, the spraying speed of the fire extinguishing material sprayed by the fire extinguisher will also increase accordingly;

[0030] Furthermore, since the first air guiding groove 301 is in a spiral ascending shape, air guiding holes 303 are evenly provided on the bottom surface of the first air guiding groove 301, so that the first air guiding grooves 301 adjacent to each other can be connected. Therefore, when the first air guiding groove 301 guides air, part of the high-pressure air does not need to rise along the spiral line of the first air guiding groove 301, but can directly flow upward through the air guiding holes 303, thereby shortening the flow distance of part of the high-pressure air, reducing the outflow time of the high-pressure air, and further improving the air guiding efficiency of the needle 3;

[0031] The pointed tip 304 is sharpened by a grinding wheel, and the pointed tip 304 is set on the center line of the needle 3. Then, when the needle 3 punctures, the force generated will be more concentrated on one point, and the puncture force will be greater, so that it will be easier and smoother to puncture the seal of the high-pressure gas cylinder. A reinforcing rib 5 is embedded in the inner center of the needle 3 to improve the structural strength of the needle 3 and improve the bending resistance of the needle 3.

[0032] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A lancet for ultra-fast air conduction used in a fire extinguisher, comprising a valve stem (1) and a lancet (3), characterized in that: A threaded blind hole (101) is provided at the bottom of the valve stem (1), and guide strips (2) are welded to the left and right ends of the bottom of the valve stem (1), and the guide strips (2) are located on the left and right sides of the threaded blind hole (101); The piercing needle (3) is located directly below the valve stem (1); a connector (4) is welded to the top of the piercing needle (3); the upper end of the connector (4) is inserted upward into the interior of the threaded blind hole (101); a pointed tip (304) is provided at the bottom of the piercing needle (3); a first air guide groove (301) and a second air guide groove (302) are provided on the outer surface of the piercing needle (3); a plurality of air guide through holes (303) are evenly provided on the bottom surface of the first air guide groove (301); and a reinforcing rib (5) is embedded inside the piercing needle (3).

2. The ultra-fast gas-conducting needle used in a fire extinguisher according to claim 1, characterized in that: The guide strips (2) are symmetrically arranged on the left and right sides of the needle (3), and the bottom of the guide strips (2) is a pointed end.

3. The ultra-fast gas-conducting needle used in a fire extinguisher according to claim 2, characterized in that: The tip of the bottom of the guide strip (2) is located above the pointed tip (304).

4. The ultra-fast gas-conducting needle used in a fire extinguisher according to claim 1, characterized in that: The first air guide groove (301) and the second air guide groove (302) are both opened in a spiral shape along the outer surface of the needle (3), and the first air guide groove (301) and the second air guide groove (302) form a double-lead spiral structure.

5. The ultra-fast gas-conducting needle used in a fire extinguisher according to claim 1, characterized in that: The bottom of the pointed tip (304) is located on the center line of the needle (3).

6. The ultra-fast gas-conducting needle used in a fire extinguisher according to claim 1, characterized in that: The reinforcing rib (5) is located on the center line of the needle (3).

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