CN220530546U - Opening and closing structure and carbon dioxide fire extinguisher with same - Google Patents

Abstract

The utility model provides an opening and closing structure and a carbon dioxide fire extinguisher with the same, and belongs to the field of fire extinguishers. The opening and closing structure comprises a valve body, a valve rod and a spring, wherein the lower end of the valve rod is provided with a spring, a circulation port for the fire extinguishing agent to circulate is formed in the valve body, an electromagnet is fixed on the valve rod, the electromagnet is axially fixed relative to the valve rod, a metal piece which can be attracted by the magnet is further arranged in the valve body, the metal piece is positioned above the electromagnet, the top of the electromagnet is provided with an attraction surface, and when the electromagnet is electrified, the circulation port is blocked by the electromagnet. The structure can induce current to realize the opening and closing of the fire extinguisher, has strong safety performance, and solves the problems that the primary consideration of operation is to produce potential safety hazard when the carbon dioxide fire extinguisher is used in a high-pressure environment at present.

Description

Opening and closing structure and carbon dioxide fire extinguisher with same

Technical Field

The utility model belongs to the field of fire extinguishers, and relates to an opening and closing structure and a carbon dioxide fire extinguisher with the same.

Background

The carbon dioxide fire extinguisher is suitable for extinguishing fire of books, files, valuable equipment, precise instruments and the like. The utility model patent of application number 201821838111X of the application of the company at 2018, 11 and 8 is aimed at the carbon dioxide fire extinguisher, and describes an elastic piece bottom ring clamping type portable carbon dioxide fire extinguisher, which comprises a bottle body, a bottle head and a connecting pipe, wherein the bottle body is detachably connected with the bottle head, the bottle head comprises a valve body, a pressing handle, a lifting handle, a valve rod, a sealing piece, a sleeve and a spring, a connecting port is arranged at the bottom of the valve body, an output port is arranged at the side part of the valve body, a sliding interface is arranged at the top of the valve body, a transition cavity which at least communicates the connecting port and the output port is also arranged on the valve body, the pressing handle and the lifting handle are positioned at the top of the valve body, the valve rod slides in the sliding interface, the upper end of the valve rod penetrates out of the sliding interface, the lower end of the valve rod is connected with the sealing piece, the lower end of the sealing piece is provided with the spring, the sleeve and the connecting pipe are connected at the connecting port, and a locking structure which enables at least one ring to be locked at the bottom of the spring is arranged between the sleeve and the connecting pipe; wherein the seal enables a seal to be formed between the transition chamber and the connection port. According to the scheme, the stability of the spring is improved by locking the bottom ring of the tower spring, so that the normal use of the maintainer head is facilitated, and the service life of the maintainer head is prolonged. However, there is still a problem that although the carbon dioxide extinguisher can be used for extinguishing fire caused by electrical equipment, the safety range is below 600V, in the electrical equipment fire above 600V, the power supply is needed to be cut off first, and then the fire is extinguished, because the carbon dioxide gas can be broken down under a high-voltage environment to form charged ions, the whole carbon dioxide extinguisher can become a conductor along the carbon dioxide spraying track, and the potential safety hazard is large, but in the fire with a part of rapid fire, the fire is easy to spread because of the fire because the power supply is sought and the time is needed for cutting off; secondly, the power supply position can be covered by fire, and the manual closing has a great potential safety hazard.

Therefore, it is necessary to design a carbon dioxide fire extinguisher opening and closing structure with an electricity sensing function.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides the opening and closing structure which can induce current to realize opening and closing of the fire extinguisher, has strong safety performance, and solves the problems that the current cutting off of the power supply when the carbon dioxide fire extinguisher is used in a high-pressure environment is mainly considered to operate so as to generate potential safety hazards and the like.

The aim of the utility model can be achieved by the following technical scheme: the opening and closing structure comprises a valve body, a valve rod and a spring, wherein the lower end of the valve rod is provided with a spring, a circulation port for the fire extinguishing agent to circulate is formed in the valve body, and the opening and closing structure is characterized in that an electromagnet is fixed on the valve rod, the electromagnet is axially fixed relative to the valve rod, a metal piece which can be attracted by the magnet is further arranged in the valve body, the metal piece is positioned above the electromagnet, the top of the electromagnet is provided with an attraction surface, and when the electromagnet is electrified, the circulation port is blocked by the electromagnet.

In the opening and closing structure, the valve body, the valve rod and the spring are all component parts of the head of the carbon dioxide fire extinguisher. Generally, the device head comprises a valve body, a pressing handle, a lifting handle, a valve rod, a sealing element, a sleeve and a spring, and the specific connection relation and principle of the parts are not repeated, and the patent technology mentioned in the background art is already described in detail. Because the valve body, the valve rod and the spring mentioned in the scheme are the indispensable components for realizing the technical scheme, the valve body is a core component of the device head for the installation of other parts, the valve rod is installed in the valve body, the handle in the device head is controlled to realize the downward movement, and the reset is realized through the spring. Referring to the drawings of the background technical patent specification, the electromagnet in the scheme is a substitute of the sealing gasket 2e2, in the original scheme, after the sealing gasket 2e2 is pressed down by the handle, the circulation port is normally open, the fire extinguishing agent is sprayed out, after the handle is released, the sealing gasket 2e2 is reset to close the circulation port under the action of the spring, and in the same function, the electromagnet plays the same function, and the sealing ring can be arranged at the corresponding position on the suction surface or the valve body, so that the sealing effect is enhanced.

When the carbon dioxide fire extinguisher with the opening and closing structure is applied to electrical equipment fires of 600V or below, the carbon dioxide fire extinguisher is not different from the traditional carbon dioxide fire extinguisher, when the electrical equipment fires with the use scene of 600V or above are used, when the power supply is cut off, the fire extinguisher can be directly used, when the high-voltage electric shock condition occurs, current enters the valve body along the fire extinguishing agent channel, the electromagnet induces current to generate instant magnetism on the attraction surface, magnetic attraction is generated between the electromagnet and a metal piece, the circulation port is closed in the moment by strong attraction, the channel is directly blocked, the personal safety of a user is guaranteed, the attraction of the electromagnet is at least 40kg, and specific specification model, power and attraction are determined according to the specification of the fire extinguisher, and details are not repeated. After the adsorption, the current is not generated any more due to the blocking of the channel, and the electromagnet is not magnetic any more at the moment, so that the fire extinguisher can be used normally. If the fire extinguisher does not take place the electric shock condition in the use, then can continue to use and put out a fire, this fire extinguisher can directly use under the inconvenient circumstances of cutting off the power, and the potential safety hazard is eliminated completely through the electro-magnet adsorption structure, and the effect is obvious under some emergency, and the design of electro-magnet has assembled the effect of original sealed pad, makes basic function not influenced, structural design is ingenious.

In the above opening and closing structure, the electromagnet is provided with a through trepanning, and the electromagnet is sleeved on the valve rod.

The electromagnet is sleeved on the valve rod through the sleeve hole.

In the above opening and closing structure, the valve rod is further sleeved with a gasket, the valve rod is provided with an annular blocking edge, the gasket is located below the annular blocking edge, and the gasket is located above the electromagnet.

The gasket is used for forming another seal, and the annular blocking edge is used for limiting the gasket. The sealing ring is arranged at the circulation port of the valve body, the outer wall of the gasket can form a seal with the inner wall of the sealing ring, and the sealing ring is well described in the background patent and is not described in detail.

In the above opening and closing structure, the bottom of the valve rod is in threaded connection with a fixing seat, and the electromagnet is positioned above the fixing seat.

The fixed seat and the gasket limit the axial movement of the electromagnet, and simultaneously the bottom of the fixed seat acts on the spring.

In the above opening and closing structure, the outer wall of the electromagnet is provided with a pair of conductive sheets, the conductive sheets are sheet-shaped and are attached to the outer wall of the electromagnet, and the conductive sheets are axially arranged along the electromagnet.

The conducting strip is equivalent to the power supply of the electromagnet, and when the potential safety hazard is generated, the electromagnet generates the power supply through the conducting strip, so that magnetic force is formed. The pressure is high when the fire extinguishing agent is sprayed out, and the conductive sheet of the axial leaning structure is propped by the electromagnet, so that the fire extinguishing agent can be prevented from being broken by the high-pressure fire extinguishing agent.

In the above opening and closing structure, the top surface of the electromagnet is provided with an annular imbedding groove, and the bottom of the gasket is positioned in the imbedding groove.

The imbedding groove is used for imbedding the gasket, can reduce the deformation of the gasket after extrusion, and simultaneously makes its stability strong.

In the above opening and closing structure, the valve body is provided with a pair of screw holes, and the metal piece is vertically screwed in the screw holes.

In this solution, the metal piece stands upright.

In the above opening and closing structure, the bottom of the metal piece is located above the suction surface.

The metal piece is completely positioned above the suction surface to prevent interference during suction of the suction surface.

In the above opening and closing structure, the valve body is provided with a pair of mounting grooves, the inner wall of one side of each mounting groove horizontally extends to form an internal groove, at least one end of the metal piece is horizontally fixed in each internal groove, and the end of the metal piece is located right above the suction surface.

In this kind of scheme, the metalwork level sets up, and the horizontal operable space of valve body inside is comparatively spacious, and the seting up of built-in groove can make the metalwork be close to the suction face more, makes the absorption action more rapid directness.

In the opening and closing structure, the metal piece is provided with the through hole, and the metal piece is fixed with the valve body through the bolt.

The fixing of the metal piece is realized through bolts.

In the opening and closing structure, the metal piece is a cylindrical iron column.

The metal piece may also be other metals that are capable of magnet attraction.

The utility model also provides a carbon dioxide fire extinguisher, which comprises a bottle body, a connecting pipe and the opening and closing structure.

Compared with the prior art, the opening and closing structure has the following advantages:

1. the on-off structure enables the fire extinguisher to be directly used under the condition of inconvenient power supply cutting off, and potential safety hazards are completely eliminated through the electromagnet adsorption structure, so that the action is obvious under some emergency conditions.

2. The design of the electromagnet in the opening and closing structure integrates the functions of the original sealing gasket, so that the basic function is not affected, and the structural design is ingenious.

3. In the opening and closing structure, the conducting strip of the axial leaning structure is propped by the electromagnet, so that the conducting strip can be prevented from being broken by the high-pressure fire extinguishing agent.

Drawings

Fig. 1 is a structural sectional view (partially sectional view) of a carbon dioxide fire extinguisher to which the present opening and closing structure is applied.

Fig. 2 is an enlarged view of the structure of the region a in fig. 1.

Fig. 3 is a schematic structural diagram of a region a in the second embodiment.

List of reference numerals

In the figure:

1. a valve body;

1a, a flow port;

1b, a sealing ring;

1c, screw holes;

1d, a mounting groove;

1d1, a built-in groove;

2. a valve stem;

2a, annular blocking edges;

3. a spring;

4. an electromagnet;

4a, a suction surface;

4b, trepanning;

4c, a conductive sheet;

4d, placing the steel into a groove;

5. a metal piece;

6. a gasket;

7. a fixing seat;

8. a bottle body;

9. and (5) connecting pipes.

Detailed Description

Example 1

As shown in fig. 1 and 2, the opening and closing structure comprises a valve body 1, a valve rod 2 and a spring 3, wherein the lower end of the valve rod 2 is provided with the spring 3, a circulation port 1a for the fire extinguishing agent to circulate is formed in the valve body 1, an electromagnet 4 is fixed on the valve rod 2, the electromagnet 4 is axially fixed relative to the valve rod 2, a metal piece 5 which can be attracted by the magnet is further arranged in the valve body 1, the metal piece 5 is positioned above the electromagnet 4, the top of the electromagnet 4 is provided with an attraction surface 4a, when the electromagnet 4 is electrified, the electromagnet 4 plugs the circulation port 1 a. In the opening and closing structure, the valve body 1, the valve rod 2 and the spring 3 are all component parts of a device head in the carbon dioxide fire extinguisher. Generally, the device head comprises a valve body 1, a pressing handle, a lifting handle, a valve rod 2, a sealing element, a sleeve and a spring 3, and the specific connection relation and principle of the components are not repeated, and the patent technology mentioned in the background art is already described in detail. Because the valve body 1, the valve rod 2 and the spring 3 mentioned in the scheme are the components necessary for realizing the technical scheme, the valve body 1 is a core component of a device head for installing other parts, the valve rod 2 is arranged in the valve body 1, the valve rod is controlled by a handle in the device head to realize downward movement, and the valve body is reset through the spring 3. Referring to the drawings of the background patent specification, it can be known that the electromagnet 4 in the present solution is a substitute for the sealing gasket 2e2, in the original solution, after the sealing gasket 2e2 is pressed down by the handle, the circulation port 1a is normally open, the fire extinguishing agent is sprayed out, after the handle is released, the sealing gasket 2e2 is reset under the action of the spring 3 to close the circulation port 1a, and in the same way, the electromagnet 4 has the same function, and a sealing ring can be arranged at a corresponding position on the suction surface 4a or the valve body 1, so as to enhance the sealing effect.

When the carbon dioxide fire extinguisher with the opening and closing structure is applied to electrical equipment fires of 600V or below, the carbon dioxide fire extinguisher is not different from the traditional carbon dioxide fire extinguisher, when the electrical equipment fires with the use scene of 600V or above are inconvenient, the fire extinguisher can be directly used, when the high-voltage electric shock condition occurs, current enters the valve body 1 along the fire extinguishing agent channel, the electromagnet 4 induces current to generate instant magnetism on the attraction surface 4a, magnetic attraction is generated with the metal piece 5, the circulation port 1a is closed instantly by strong attraction, the channel is directly blocked, the personal safety of a user is ensured, the attraction of the electromagnet 4 is at least 40kg, and specific specification model, power and attraction are determined according to the specification of the fire extinguisher, and the details are omitted. After the adsorption, the current is not generated any more due to the blocking of the channel, and the electromagnet 4 is not magnetic any more, so that the fire extinguisher can be used normally. If the fire extinguisher does not take place the electric shock condition in the use, then can continue to use and put out a fire, this fire extinguisher can directly use under the inconvenient circumstances of cutting off the power, and the potential safety hazard is eliminated completely through electro-magnet 4 adsorption structure, and the effect is obvious under some emergency, and the design of electro-magnet 4 has assembled the effect of original sealed pad, makes basic function not influenced, structural design ingenious.

The electromagnet 4 is provided with a through trepanning 4b, and the electromagnet 4 is sleeved on the valve rod 2. The electromagnet 4 is sleeved on the valve rod 2 through a sleeve hole 4 b. The valve rod 2 is also sleeved with a gasket 6, the valve rod 2 is provided with an annular blocking edge 2a, the gasket 6 is positioned below the annular blocking edge 2a, and the gasket 6 is positioned above the electromagnet 4. The gasket 6 functions to form another seal and the annular rim 2a functions to limit the gasket 6. The flow port 1a of the valve body 1 is provided with a sealing ring 1b, and the outer wall of the gasket 6 can form a seal with the inner wall of the sealing ring 1b, which is described in detail in the background patent and will not be described in detail. The bottom of the valve rod 2 is connected with a fixed seat 7 in a threaded manner, and the electromagnet 4 is positioned above the fixed seat 7. The fixing seat 7 and the gasket 6 limit the axial movement of the electromagnet 4, and the bottom of the fixing seat 7 acts on the spring 3. The outer wall of the electromagnet 4 is provided with a pair of conductive sheets 4c, the conductive sheets 4c are sheet-shaped and are attached to the outer wall of the electromagnet 4, and the conductive sheets 4c are axially arranged along the electromagnet 4. When the conductive sheet 4c corresponds to the power supply of the electromagnet 4 and potential safety hazard occurs, the electromagnet 4 generates power supply through the conductive sheet 4c, so that magnetic force is formed. The pressure is large when the fire extinguishing agent is sprayed, and the conductive sheet 4c of the axial abutting structure is abutted by the electromagnet 4, so that the fire extinguishing agent can be prevented from being broken by the high-pressure fire extinguishing agent. The top surface of the electromagnet 4 is provided with an annular imbedding groove 4d, and the bottom of the gasket 6 is positioned in the imbedding groove 4 d.

The insertion groove 4d is used for inserting the gasket 6, so that deformation of the gasket 6 after extrusion can be reduced, and meanwhile, the stability of the gasket is high. The valve body 1 is provided with a pair of screw holes 1c, and the metal piece 5 is vertically and spirally connected in the screw holes 1 c. In this solution, the metal piece 5 is arranged upright. The bottom of the metal piece 5 is located above the suction surface 4 a. The metal material 5 is entirely located above the suction surface 4a to prevent interference from occurring when the suction surface 4a is sucked. The metal piece 5 is provided with a perforation, and is fixed with the valve body 1 through a bolt. The fixing of the metal piece 5 is achieved by means of bolts. The metal piece 5 is a cylindrical iron column. The metal member 5 may be another metal capable of being attracted to a magnet.

Example two

As shown in fig. 3, this embodiment is different from the first embodiment in that: the valve body 1 is provided with a pair of mounting grooves 1d, the inner wall of one side of the mounting groove 1d horizontally extends to form a built-in groove 1d1, one end of the metal piece 5 is horizontally fixed on the built-in groove 1d1, and the end is positioned right above the suction surface 4 a. In this scheme, the metal piece 5 is arranged horizontally, the horizontal operable space inside the valve body 1 is relatively wide, and the built-in groove 1d1 is formed so that the metal piece 5 is closer to the suction surface 4a, and the suction action is quicker and more direct.

The details of construction, the dimensions and principles of the specific components not mentioned in this application are all known to those of ordinary skill in the art or may be simply selected by those skilled in the art, and are not described in detail herein.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (10)

1. The opening and closing structure comprises a valve body, a valve rod and a spring, wherein the lower end of the valve rod is provided with a spring, a circulation port for the fire extinguishing agent to circulate is formed in the valve body, and the opening and closing structure is characterized in that an electromagnet is fixed on the valve rod, the electromagnet is axially fixed relative to the valve rod, a metal piece which can be attracted by the magnet is further arranged in the valve body, the metal piece is positioned above the electromagnet, the top of the electromagnet is provided with an attraction surface, and when the electromagnet is electrified, the circulation port is blocked by the electromagnet.

2. The opening and closing structure according to claim 1, wherein a gasket is further sleeved on the valve rod, an annular blocking edge is arranged on the valve rod, the gasket is located below the annular blocking edge, and the gasket is located above the electromagnet.

3. The opening and closing structure according to claim 1, wherein a fixing seat is screwed at the bottom of the valve rod, and the electromagnet is located above the fixing seat.

4. The opening and closing structure according to claim 1, wherein the electromagnet outer wall is provided with a pair of conductive sheets, the conductive sheets are sheet-shaped and are abutted against the electromagnet outer wall, and the conductive sheets are arranged along the electromagnet axial direction.

5. The opening and closing structure according to claim 2, wherein the top surface of the electromagnet has an annular insertion groove, and the bottom of the gasket is located in the insertion groove.

6. The opening and closing structure according to claim 1, wherein the valve body is provided with a pair of screw holes, and the metal piece is vertically screwed in the screw holes.

7. The opening and closing structure according to claim 6, wherein the bottom of the metal piece is located above the suction surface.

8. The opening and closing structure according to claim 1, wherein the valve body is provided with a pair of mounting grooves, an inner wall of one side of each mounting groove is horizontally extended to form a built-in groove, and at least one end of the metal member is horizontally fixed to the built-in groove and is located right above the suction surface.

9. The opening and closing structure according to claim 8, wherein the metal member is provided with a through hole, and the metal member is fixed to the valve body by a bolt.

10. A carbon dioxide fire extinguisher comprising a bottle body and a connecting pipe, characterized by further comprising an opening and closing structure as claimed in any one of claims 1 to 9.