CN112628442B

CN112628442B - Container valve

Info

Publication number: CN112628442B
Application number: CN202011296116.6A
Authority: CN
Inventors: 俞聪妹
Original assignee: Ningjin Apc Industries Co ltd
Current assignee: Ningjin Apc Industries Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2022-10-28
Anticipated expiration: 2040-11-18
Also published as: CN112628442A

Abstract

The invention discloses a container valve, which comprises a valve body, a valve cover and a fire detection pipe, wherein the valve cover is arranged at the upper end of the valve body, the fire detection pipe is arranged on the valve cover, a through hole is formed in the valve cover, the fire detection pipe is communicated with the through hole, an outlet and an inlet are formed in the valve body, the outlet and the inlet are respectively arranged at the left end and the right end of the valve body, a running cavity is formed between the outlet and the inlet, a piston assembly is arranged in the running cavity and comprises a piston head and a piston rod, the running cavity is divided into an upper cavity and a lower cavity by the piston head, a movable cavity is formed in the piston rod, a stop ball valve is arranged in the movable cavity, an air inlet channel is formed in the lower end of the piston rod and is communicated with the lower cavity, a pore is formed in an upper arc-shaped structure, the stop ball valve can be arranged on the pore in a blocking manner, an air outlet channel is further formed in the piston rod, the front end of the air outlet channel is communicated with the upper cavity, the rear end of the air outlet channel is respectively communicated with the through hole and the pore, quick-wear-resistant parts such as springs are not used in the container valve, the service life is long, the automatic air supplement is realized, the quick start-supplement, the quick-supplement is quicker fire-up and more timely fire-extinguishing effect is realized.

Description

Container valve

Technical Field

The invention relates to the field of fire extinguishing devices, in particular to a container valve.

Background

The existing automatic fire-extinguishing container valve is mostly controlled by a fire detection tube and a spring, however, in the actual use process, because the spring is a vulnerable part, after long-term use, the valve is easily damaged by corrosion and the like, the service performance of the whole fire extinguishing device is reduced, the service life is shortened, and the valve needs to be frequently checked by maintenance personnel for ensuring the stability of a system and preventing the system from being opened mistakenly. When the pressure at the fire detecting pipe is reduced, the pressure at the fire detecting pipe needs to be manually supplemented, the maintenance cost is high, the timeliness cannot be guaranteed, the container valve can be mistakenly opened if the fire detecting pipe leaks air for a long time, the fire extinguishing agent is wasted, a plurality of troubles are brought to people, and the stability and the reliability of the whole fire extinguishing device are reduced.

Disclosure of Invention

The invention provides a container valve aiming at the defects in the prior art so as to solve the problems in the prior art.

In order to solve the technical problems, the invention is solved by the following technical scheme:

a container valve comprises a valve body, a valve cover and a fire detecting pipe, wherein the valve cover is arranged at the upper end of the valve body, the fire detecting pipe is arranged on the valve cover, a through hole is formed in the valve cover, the fire detecting pipe is communicated with the through hole, an outlet and an inlet are formed in the valve body, the outlet and the inlet are respectively arranged at the left end and the right end of the valve body, a running cavity is formed between the outlet and the inlet, a piston assembly is arranged in the running cavity and comprises a piston head and a piston rod, the piston head is slidably sleeved on the piston rod and divides the running cavity into an upper cavity and a lower cavity, a step is arranged between the upper cavity and the lower cavity, the piston head corresponds to the step in sealing contact, the lower part of the piston head is blocked and arranged between the outlet and the lower cavity, the inlet is communicated with the lower cavity, and a piston opening is formed in the lower end of the piston head, the utility model discloses a piston rod, including piston mouth and cavity of resorption, be equipped with movable chamber in the piston rod, activity chamber up end is equipped with the arc structure, the terminal surface is equipped with down the arc structure under the activity chamber, the activity intracavity is equipped with by the ball valve, it is corresponding with lower arc structure and last arc structure to end the ball valve surface, inlet channel has been seted up to the piston rod lower extreme, the inlet channel front end is linked together with the piston mouth, the inlet channel rear end sets up under on the arc structure, can keep off by the ball valve and establish on the inlet channel rear end, it is equipped with the pore on the arc structure to go up, it can keep off to establish on the pore to end the ball valve, still be equipped with outlet channel on the piston rod, the outlet channel front end is linked together with the epicoele, the outlet channel rear end is linked together with through-hole and pore respectively.

Preferably, the bottom end of the valve body is provided with a safety relief device for automatically relieving pressure when overpressure occurs.

Preferably, a pressure sensor is mounted on the inlet.

Preferably, a first sealing ring is arranged between the valve body and the valve cover.

Preferably, a second sealing ring is arranged between the valve cover and the fire detecting pipe.

Preferably, the front end of the air outlet channel is positioned on the side surface of the piston rod, and the front end of the air outlet channel can be blocked when the piston head moves upwards.

The invention has the advantages that:

when the air pressure in the fire detecting pipe in the container valve is insufficient, the stop ball valve is lifted under the action of the air pressure of the lower cavity, the gas in the lower cavity can flow into the fire detecting pipe from the movable cavity, so that the gas can be slowly supplemented to the fire detecting pipe and the upper cavity, the normal working state of the fire detecting pipe is ensured, the purpose of automatically supplementing the gas is realized, the situation of mistaken opening is avoided, the maintenance costs of manual inspection, gas supplementation and the like can be greatly reduced, after the fire detecting pipe detects that a fire source bursts, the gas in the upper cavity can quickly flow out, the piston head can quickly move upwards, the outlet is opened, the fire extinguishing agent is quickly sprayed out, the start of the fire extinguishing device is quicker, the fire extinguishing device can extinguish fire more timely, the stop ball valve is abutted against a pore under the action of the air pressure in the lower cavity, the gas leakage of the lower cavity is prevented, and the self-sealing property is improved; and vulnerable parts such as springs and the like are not used, so that the device is safe, long in service life, simple in structure, novel, reasonable and compact, simple to process, convenient to assemble and high in practicability.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or the prior art will be discussed below, it is obvious that the technical solutions described in conjunction with the drawings are only some embodiments of the present invention, and for those skilled in the art, other embodiments and drawings can be obtained according to the embodiments shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is an enlarged view of a portion of the structure of the present invention.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without the need for inventive step, are within the scope of the present invention.

As shown in fig. 1 to 2, a container valve comprises a valve body 1, a valve cover 2 and a fire detecting tube 3, wherein the valve cover 2 is arranged at the upper end of the valve body 1, the fire detecting tube 3 is arranged on the valve cover 2, a through hole is arranged in the valve cover 2, the fire detecting tube 3 is communicated with the through hole, an outlet 5 and an inlet 4 are arranged on the valve body 1, the outlet 5 and the inlet 4 are respectively arranged at the left end and the right end of the valve body 1, a running cavity is arranged between the outlet 5 and the inlet 4, a piston assembly is arranged in the running cavity and comprises a piston head 10 and a piston rod 9, the piston head 10 is slidably sleeved on the piston rod 9, the running cavity is divided into an upper cavity 8 and a lower cavity 7 by the piston head 10, a step is arranged between the upper cavity 8 and the lower cavity 7, the piston head 10 is in corresponding sealing contact with the step, the lower part of the piston head 10 is arranged between the outlet 5 and the lower cavity 7, the inlet 4 is communicated with the lower cavity 7, the lower end of the piston head 10 is provided with a piston port, the piston port is communicated with the lower cavity 7, the piston rod 9 is internally provided with a movable cavity, the upper end surface of the movable cavity is provided with an upper arc-shaped structure, the lower end surface of the movable cavity is provided with a lower arc-shaped structure, the movable cavity is internally provided with a stop ball valve 11, the surface of the stop ball valve 11 corresponds to the lower arc-shaped structure and the upper arc-shaped structure, the lower end of the piston rod 9 is provided with an air inlet channel, the front end of the air inlet channel is communicated with the piston port, the rear end of the air inlet channel is arranged on the lower arc-shaped structure, the stop ball valve 11 can be arranged on the rear end of the air inlet channel in a blocking way, the upper arc-shaped structure is provided with a pore 12, the stop ball valve 11 can be arranged on the pore 12 in a blocking way, the piston rod 9 is also provided with an air outlet channel 13, and the front end of the air outlet channel 13 is communicated with the upper cavity 8, the rear end of the air outlet channel 13 is respectively communicated with the through hole and the fine hole 12, a safety discharge device 6 capable of automatically releasing pressure when overpressure occurs is installed at the bottom end of the valve body 1, a pressure sensor is installed on the inlet 4, a first sealing ring is arranged between the valve body 1 and the valve cover 2, a second sealing ring is arranged between the valve cover 2 and the fire detecting tube 3, the front end of the air outlet channel 13 is located on the side face of the piston rod 9, and the front end of the air outlet channel 13 can be blocked when the piston head 10 moves upwards.

When the fire detecting tube is in an operating state, the stop ball valve 11 is lifted under the air pressure of the lower cavity 7, the gas in the lower cavity 7 can flow into the fire detecting tube 3 from the movable cavity to slowly supplement gas into the fire detecting tube 3 and the upper cavity 8, the normal operating state of the fire detecting tube 3 is ensured, the purpose of automatic gas supplement is realized, and the weight of the stop ball valve 11 is far smaller than that of the piston head 10, therefore, when the air pressure in the fire detecting pipe 3 is reduced, the air in the fire extinguishing agent bottle can lift the stop ball valve 11 and flow into the upper chamber 8, the difference between the air pressure of the upper chamber 8 and the air pressure of the lower chamber 7 is smaller than the downward gravity of the piston head 10, the piston head 10 keeps a static state in the process, the air inlet channel can be blocked by the stop ball valve 11 in a normal state, when a fire disaster occurs, the fire detecting pipe 3 bursts, the air in the upper chamber 8 rapidly flows out from the burst part of the fire detecting pipe 3, the stop ball valve 11 is abutted against the upper arc-shaped structure under the action of the air pressure of the lower chamber 7 and blocks the fine holes 12, the air in the lower chamber 7 is prevented from flowing out from the burst part of the fire detecting pipe 3, the air pressure in the upper chamber 8 is rapidly reduced, the air extinguishing agent can be sprayed out from the outlet 5, when the piston head 10 moves upwards, the front end of the air outlet channel 13 can be blocked, and the possibility of backflow of the air in the upper chamber 8 is further prevented.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention is indicated by the appended claims, rather than the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The container valve is characterized by comprising a valve body (1), a valve cover (2) and a fire detecting pipe (3), wherein the valve cover (2) is arranged at the upper end of the valve body (1), the fire detecting pipe (3) is arranged on the valve cover (2), a through hole is formed in the valve cover (2), the fire detecting pipe (3) is communicated with the through hole, an outlet (5) and an inlet (4) are formed in the valve body (1), the outlet (5) and the inlet (4) are respectively arranged at the left end and the right end of the valve body (1), a running cavity is formed between the outlet (5) and the inlet (4), a piston assembly is arranged in the running cavity and comprises a piston head (10) and a piston rod (9), the piston head (10) is slidably sleeved on the piston rod (9), the running cavity is divided into an upper cavity (8) and a lower cavity (7) by the piston head (10), a step is arranged between the upper cavity (8) and the lower cavity (7), the piston head (10) is in corresponding sealing contact with the step, the lower part of the piston head (10) is arranged between the outlet (5) and the lower cavity (7), the lower cavity (7) and the lower cavity (7) is communicated with the lower cavity (9), a movable piston rod (9), the upper end face of the movable cavity is provided with an upper arc-shaped structure, the lower end face of the movable cavity is provided with a lower arc-shaped structure, a stop ball valve (11) is arranged in the movable cavity, the surface of the stop ball valve (11) corresponds to the lower arc-shaped structure and the upper arc-shaped structure, the lower end of the piston rod (9) is provided with an air inlet channel, the front end of the air inlet channel is communicated with a piston port, the rear end of the air inlet channel is arranged on the lower arc-shaped structure, the stop ball valve (11) can be arranged at the rear end of the air inlet channel in a blocking manner, the upper arc-shaped structure is provided with a pore (12), the stop ball valve (11) can be arranged on the pore (12) in a blocking manner, the piston rod (9) is also provided with an air outlet channel (13), the front end of the air outlet channel (13) is communicated with the upper cavity (8), and the rear end of the air outlet channel (13) is respectively communicated with the through hole and the pore (12); a safety relief device (6) which can automatically relieve pressure when overpressure is generated is arranged at the bottom end of the valve body (1); a pressure sensor is arranged on the inlet (4); a first sealing ring is arranged between the valve body (1) and the valve cover (2); a second sealing ring is arranged between the valve cover (2) and the fire detecting pipe (3); the front end of the air outlet channel (13) is positioned on the side surface of the piston rod (9), and the front end of the air outlet channel (13) can be blocked when the piston head (10) moves upwards.