CN217187528U - Fire control filter tank crossover sub - Google Patents

Abstract

The utility model relates to a fire-fighting equipment technical field discloses a fire control filters jar crossover sub, including the inside joint body that is equipped with gas passage, the joint body has the first interface that is used for being connected with respirator in gas passage's one end, the other end has the second interface that is used for filtering jar with the gas defense and is connected, and first interface is quick-operation joint structure, and the second interface is screw hole structure, and the check valve has still been arranged in gas passage to the joint body, and the check valve confession gas is from the second interface to first interface unidirectional flow. When being connected with positive pressure air respirator's air feed valve, the rescue personnel directly with respirator and air feed valve butt joint can, when changing protection harness to gas defense filter jar, the rescue personnel adopt the external screw thread interface connection of second interface and gas defense filter jar, be connected first interface and respirator again, need not take the face guard and can accomplish the change, less the number of times of taking of face guard and the change number of times of gas cylinder greatly, guarantee the safety of rescue personnel.

Description

Fire control filter tank crossover sub

Technical Field

The utility model relates to a fire-fighting equipment technical field especially relates to a fire control filters jar crossover sub.

Background

The fire engineering is an important link for guaranteeing social safety in urban construction, firefighters need to be equipped with fire-fighting articles to guarantee self safety in the process of fire fighting and disaster relief, and the fire-fighting articles comprise fire-fighting clothes, respirators and the like. With the rapid development of socialist modern construction, fire extinguishing objects of fire rescue teams are becoming more and more complex, and fire accidents in places such as chemical and pharmaceutical units, pesticide, medicine, chemical material and hazardous chemical warehouse and actual insurance room are frequent.

When fire fighting and disaster relief are carried out, due to the fact that different fire extinguishing objects generate different harmful substances, a large amount of toxic gas can be generated when a fire disaster happens in the fire fighting and disaster relief place, personal safety of fire fighting and rescue personnel on the spot is directly threatened, and therefore a respiratory tract protection harness on the spot needs to be equipped to guarantee respiratory safety. The current on-site respiratory protection equipment comprises a positive pressure air respirator, a gas mask and a low-efficiency mask.

In a fire-fighting rescue site, the first-line fighter often needs to rescue by alternately using a positive-pressure air respirator, a gas mask or a low-performance mask, but the alternate use time is too long, and even the case that the fighter is poisoned due to the fact that the respiratory tract is not protected is occasionally taken.

When fire extinguishing operation is opened inside and outside a fire scene for a long time, under the condition of high temperature and dense smoke, a fighter needs to be matched with an air valve of a positive pressure type air respirator for respiratory protection, and under the low-toxicity environment, a poison prevention filter tank needs to be matched for respiratory protection. However, the existing breathing mask is of a quick connector structure, the gas-defense filter tank is of a threaded structure, and the breathing mask and the gas-defense filter tank cannot be directly connected, so that a special gas-defense mask needs to be equipped, when the protective harness is replaced, the mask needs to be taken out for replacement, and replacement of the mask on the rescue site can increase the probability of poisoning of firemen, thereby affecting rescue safety.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the utility model provides a fire control filters jar crossover sub to increase the probability that the fireman is poisoned when changing the protective mask among the solution prior art, influence the problem of rescue safety.

In order to realize the above-mentioned purpose, the utility model provides a fire control filters jar crossover sub, including the inside joint body that is equipped with gas passage, connect the body in gas passage's one end has the first interface that is used for being connected with respirator, the other end has the second interface that is used for being connected with the poison prevention filter jar, first interface is quick-operation joint structure, the second interface is screw hole structure, connect the body in the gas passage has still arranged the check valve, the check valve supplies gas to follow the second interface to first interface unidirectional flow.

Preferably, the check valve comprises a valve core and a spring, the spring is assembled between the first connector and the valve core in a pressing mode, and a blocking structure which is blocked with the valve core in a one-way mode is arranged on the connector body.

Preferably, an inner ring platform is formed in the gas channel, the valve core is in stop assembly with the inner ring platform, and the inner ring platform forms the stop structure.

Preferably, the valve core includes a cylindrical main body and an annular flange disposed on the main body, the annular flange is disposed at an end of the main body close to the first port, and the annular flange is assembled with the inner annular ledge in a stop manner.

Preferably, the joint body is formed with a boss protruding inwards at an end of the first connector, an assembly groove is formed at a root of the boss, and the spring is pressed and assembled in the assembly groove.

Preferably, a sealing ring is arranged on the outer side of the first interface.

Preferably, the outer wall of the joint body is of a stepped structure, and the outer diameter of the second interface is larger than that of the first interface.

Preferably, the material of the joint body is a refractory material.

Preferably, the joint body is made of polyetheretherketone or polyphenylene sulfide.

The embodiment of the utility model provides a fire control filters a jar crossover sub compares with prior art, and its beneficial effect lies in: the first interface is a quick joint structure, the second interface is a threaded hole structure, when the gas supply valve of the positive pressure type air respirator is required to be connected, as the gas supply valve of the positive pressure type air respirator is the quick joint structure, a rescuer can directly butt the breathing mask and the gas supply valve, when the protective harness is required to be replaced to the gas defense filter tank, the rescuer adopts the second interface of the conversion joint to be connected with the external thread interface of the gas defense filter tank, and then connects the first interface with the breathing mask, the replacement can be completed without taking off the mask, the taking times of the mask and the replacing times of the gas cylinder are greatly reduced, and the safety of the rescuer is ensured; meanwhile, the one-way valve is arranged in the joint body, gas can only flow from the second interface to the first interface, and air inflow can only pass through the breathing mask, so that rescue safety is improved.

Drawings

Fig. 1 is a schematic structural view of the fire-fighting filter tank adapter of the utility model.

In the figure, 1, a joint body; 11. an inner ring platform; 2. a first interface; 3. a second interface; 4. a gas channel; 5. a one-way valve; 51. a spring; 52. a valve core; 53. a main body; 54. an annular flange; 6. a boss; 61. assembling a groove; 7. and (5) sealing rings.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The utility model discloses a fire control filters jar crossover sub's preferred embodiment, as shown in fig. 1, this fire control filters jar crossover sub including connecting body 1, connects the inside of body 1 and has seted up gas passage 4, connects body 1 and be cylindrical structure, and gas passage 4 is coaxial to be seted up in connecting body 1 to for the gas gets into respirator.

The connector body 1 is provided with a first interface 2 at one end of a gas channel 4 and a second interface 3 at the other end, the first interface 2 is used for being connected with a breathing mask, and the second interface 3 is used for being connected with an anti-virus filter tank. First interface 2 is quick joint structure, second interface 3 is screw hole structure, the interface of poison prevention filter jar is external screw thread structure, when needs are connected with the air feed valve of positive pressure formula air respirator, because the air feed valve of positive pressure formula air respirator itself is quick joint structure, the rescuer directly with respirator and air feed valve butt joint can, when needing to change protection harness to poison prevention filter jar, the rescuer adopts the external screw thread interface connection of this crossover sub's second interface 3 and poison prevention filter jar, be connected first interface 2 and respirator again, can accomplish by the conversion of positive pressure formula air respirator to poison prevention filter jar, realize that respirator and poison prevention filter cover's quick links to each other. The mask can be replaced without being taken off during conversion, so that the taking times of the mask and the replacing times of the gas cylinder are greatly reduced, and the safety of rescue workers is ensured.

The connector body 1 is further provided with a one-way valve 5 in the gas channel 4, and the one-way valve 5 is used for allowing gas to flow from the second connector 3 to the first connector 2 in a one-way mode. The one-way valve 5 enables gas to flow from the second interface 3 to the first interface 2 only, and the inlet gas can only pass through the breathing mask, so that the rescue safety is improved.

Preferably, the check valve 5 comprises a valve core 52 and a spring 51, the spring 51 is press-fitted between the first connector 2 and the valve core 52, and a blocking structure for blocking the valve core 52 in a one-way manner is arranged on the connector body 1.

The spring 51 elastically pushes the valve core 52 between the first connector 2 and the connector body 1, and the structure of the check valve 5 is simplified by using the one-way stop structure and the valve core 52 to perform one-way stop, so that the manufacturing cost of the connector body 1 is reduced.

Preferably, an inner ring platform 11 is formed in the gas channel 4, the valve core 52 is assembled with the inner ring platform 11 in a blocking way, and the inner ring platform 11 forms a blocking structure.

The inner annular table 11 can be processed by a boring cutter, the manufacture is convenient, meanwhile, the contact area of the inner annular table 11 and the valve core 52 is large, and the sealing performance is good. In other embodiments, a flared counterbore may also be formed in the joint body 1, a part of the counterbore close to the first port 2 is larger than a part of the counterbore close to the second port 3, the valve core 52 contacts with a bore wall of the counterbore to form a seal, and the counterbore forms a stop structure.

Preferably, the valve core 52 includes a cylindrical main body 53 and an annular flange 54 disposed on the main body 53, the annular flange 54 is disposed at an end of the main body 53 near the first port 2, and the annular flange 54 is stop-fitted with the inner annular table 11.

The annular flange 54 stops against the inner annular table 11 to increase the contact area with the inner annular table 11. In other embodiments, the body of the valve core 52 may also be a conical structure, and the valve core 52 is assembled with the inner annular table 11 by the conical outer wall thereof.

Preferably, the joint body 1 is formed with a boss 6 protruding inward at an end of the first connector 2, a fitting groove 61 is formed at a root of the boss 6, and the spring 51 is press-fitted in the fitting groove 61.

An assembling groove 61 is formed at the root of the boss 6, and the spring 51 can be limited by the assembling groove 61, so that the spring 51 is prevented from moving.

Preferably, a sealing ring 7 is arranged on the outside of the first port 2.

The sealing ring 7 can increase the sealing performance after the first connector is quickly connected with the breathing mask.

Preferably, the outer wall of the joint body 1 is of a stepped structure, and the outer diameter of the second port 3 is larger than that of the first port 2.

The outer wall of the ladder structure can limit the connector body 1, and the connector body 1 and the breathing mask are guaranteed to be connected in place.

Preferably, the material of the joint body 1 is a refractory material.

The temperature of air is higher when the fire rescue is carried out, and the service life of the joint body 1 can be prolonged by adopting a refractory material.

Preferably, the material of the joint body 1 is polyetheretherketone or polyphenylene sulfide.

The PEEK has the load thermal deformation temperature up to 316 ℃, the instantaneous service temperature up to 300 ℃, and self-extinguishing property, and can reach 94V-0 grade of UL standard even if no flame retardant is added; polyphenylene Sulfide (PPS) is short, the maximum allowable working temperature in air is very high, the polyphenylene sulfide can continuously work at 220 ℃, the maximum allowable working temperature can reach 260 ℃ in a short time, and the polyphenylene sulfide has flame retardance.

To sum up, the embodiment of the present invention provides a fire-fighting filter tank adapter, wherein the first interface is a quick connector structure, the second interface is a threaded hole structure, when the adapter is connected to the air supply valve of a positive pressure air respirator, because the air supply valve of the positive pressure air respirator is a quick connector structure, the rescuer can directly butt the breathing mask to the air supply valve, when the protection device needs to be replaced to the gas-proof filter tank, the rescuer adopts the second interface of the adapter to connect to the external thread interface of the gas-proof filter tank, and then connects the first interface to the breathing mask, and can complete the replacement without taking the mask, so that the number of taking the mask and the number of replacing the gas cylinder are greatly reduced, and the safety of the rescuer is ensured; simultaneously, the one-way valve is arranged in the connector body, gas can only flow from the second interface to the first interface, and air inlet can only pass through the breathing mask, so that the rescue safety is improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides a fire control filters a jar crossover sub, its characterized in that, is equipped with the joint body of gas passage including inside, connect the body in gas passage's one end has the first interface that is used for being connected with respirator, the other end has the second interface that is used for filtering the jar with the gas defense and is connected, first interface is quick-operation joint structure, the second interface is threaded hole structure, connect the body in the check valve has still been arranged in the gas passage, the check valve supplies gaseous follow the second interface to first interface unidirectional flow.

2. The fire fighting filter tank adapter according to claim 1, wherein the check valve comprises a valve core and a spring, the spring is assembled between the first connector and the valve core in a pressing manner, and a blocking structure for blocking the valve core in one direction is arranged on the adapter body.

3. The fire fighting canister adapter according to claim 2, wherein an inner annular ledge is formed in the gas passage, the valve core being in stop assembly with the inner annular ledge, the inner annular ledge forming the stop structure.

4. The fire fighting filter tank adapter according to claim 3, wherein the valve cartridge includes a cylindrical body and an annular flange disposed on the body, the annular flange being disposed at an end of the body proximate the first port, the annular flange being in stop-fit engagement with the inner annular ledge.

5. The fire-fighting filter tank adapter according to claim 2, wherein the adapter body is formed with an inwardly protruding boss at an end of the first connector, an assembly groove is formed at a root of the boss, and the spring is press-fitted into the assembly groove.

6. A fire fighting filter tank adapter according to any of claims 1 to 5, characterized in that a sealing ring is arranged on the outside of the first interface.

7. The fire fighting canister adapter according to any of claims 1 to 5, wherein the outer wall of the adapter body is of a stepped configuration, and the outer diameter of the second port is larger than the outer diameter of the first port.

8. A fire fighting canister adapter according to any of claims 1-5, wherein the adapter body is made of a refractory material.

9. The fire fighting filter tank adapter according to claim 8, wherein the adapter body is made of polyetheretherketone or polyphenylene sulfide.

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