阅读说明：本技术 一种自动装夹加压系统 (Automatic clamping pressurization system ) 是由 刘国兴 邱丽萍 李华博 王振强 陈晓东 陈少斌 于 2021-01-21 设计创作，主要内容包括：本发明公开了一种自动装夹加压系统,包括进气源、调压阀、第一气动阀、第二气动阀、气动开关和气缸,所述气动开关包括第一泄压口、第一接口和第二接口,所述第一气动阀包括第一进气口、第一启动口和第一关闭口和第一出气口,所述第二气动阀包括第二进气口、第二启动口、第二关闭口和第二出气口,所述进气源分别与所述调压阀的进气口和所述第一进气口相连通,所述第一出气口与所述第二进气口相连通,所述调压阀的出气口与所述气动开关的所述进气口相连通。该自动装夹加压系统通过进气源的气体推动活塞杆使得连接头先于瓶头阀配合,再通过活塞杆的输气孔进行加压,避免了人工装夹连接头和手持加压枪,有效够提高了充装加压效率和安全性能。(The invention discloses an automatic clamping pressurization system which comprises an air inlet source, a pressure regulating valve, a first pneumatic valve, a second pneumatic valve, a pneumatic switch and an air cylinder, wherein the pneumatic switch comprises a first pressure relief port, a first interface and a second interface, the first pneumatic valve comprises a first air inlet, a first starting port, a first closing port and a first air outlet, the second pneumatic valve comprises a second air inlet, a second starting port, a second closing port and a second air outlet, the air inlet source is respectively communicated with the air inlet of the pressure regulating valve and the first air inlet, the first air outlet is communicated with the second air inlet, and the air outlet of the pressure regulating valve is communicated with the air inlet of the pneumatic switch. This automatic clamping pressurization system promotes the piston rod through the gas of air inlet source and makes the connector cooperate earlier than the bottle head valve, and the gas transmission hole of rethread piston rod pressurizes, has avoided artifical clamping connector and handheld pressure rifle, has effectively enough improved filling pressurization efficiency and security performance.)

1. The utility model provides an automatic clamping pressurization system which characterized in that: comprises an air inlet source, a pressure regulating valve, a first pneumatic valve, a second pneumatic valve, a pneumatic switch and an air cylinder,

the pneumatic switch comprises an air inlet, a first pressure relief opening, a first interface and a second interface,

the first pneumatic valve comprises a first air inlet, a first starting port, a first closing port and a first air outlet,

the second pneumatic valve comprises a second air inlet, a second starting port, a second closing port and a second air outlet,

the air inlet source is respectively communicated with an air inlet of the pressure regulating valve and the first air inlet, the first air outlet is communicated with the second air inlet, and an air outlet of the pressure regulating valve is communicated with the air inlet of the pneumatic switch; the first interface is respectively communicated with the first closing port and the second starting port, and the second interface is respectively communicated with the first starting port and the second closing port;

the cylinder comprises a front cylinder cover, a cylinder barrel, a rear cylinder cover, a piston rod and a piston, the front cylinder cover and the rear cylinder cover are respectively fixedly connected with the two ends of the cylinder barrel in a one-to-one correspondence mode, the inner cavity of the front cylinder cover and the inner cavity of the rear cylinder cover are respectively communicated with the inner cavity of the cylinder barrel, the piston rod is inserted into the cylinder and penetrates out of the front cylinder cover, one end, penetrating out of the front cylinder cover, of the piston rod is detachably connected with a connector used for pressurization, the piston is fixedly connected with the other end of the piston rod, an air transmission hole axially penetrating through the piston rod is formed in the piston rod, a stop block is hermetically connected with one end, corresponding to the end far away from the connector, of the stop block, one end, close to the rear cylinder cover is provided with a groove, a side hole communicated with the air transmission, the longitudinal section area in side hole is less than the longitudinal section area of the inner chamber of back cylinder chamber lid, the leading thick stick is covered and is seted up with the first gas port that connects that the inner chamber of preceding cylinder cap is linked together, set up on the back cylinder cap with the second that the inner chamber of back cylinder cap is linked together connects the gas port, first connect the gas port with the second start the mouth with intercommunication pipeline between the first interface is linked together, the second connect the gas port with first gas outlet with intercommunication pipeline between the second gas inlet is linked together.

2. A self-clamping pressurization system as claimed in claim 1, wherein: and the joints of the front cylinder cover and the rear cylinder cover with the cylinder barrel are respectively provided with a first sealing ring.

3. A self-clamping pressurization system as claimed in claim 1, wherein: at least one step position is arranged at the position where the piston rod is connected with the piston, and a second sealing ring is arranged in each step position.

4. A self-clamping pressurization system as claimed in claim 1, wherein: the outer wall of the piston is provided with at least two sealing grooves, and a third sealing ring is arranged in each sealing groove.

5. A self-clamping pressurization system as claimed in claim 1, wherein: and the front cylinder cover is fixedly connected with a dustproof sealing ring and a guide ring which are arranged around the piston rod.

6. A self-clamping pressurization system as claimed in claim 1, wherein: the front end surface and the rear end surface of the piston are respectively and fixedly connected with cushion pads.

Technical Field

The invention relates to the field of fire fighting, in particular to an automatic clamping and pressurizing system.

Background

The filling pressure of the prior fire-fighting container tank is basically realized by manually installing a pressurizing head on a bottle head valve and then pressurizing, and the filling and pressurizing mode has low efficiency and poor safety; there is also a filling method in which a pneumatic pressurizing gun is manually held to fill a fire fighting tank, but the pneumatic pressurizing gun is relatively heavy and increases the working strength of workers, resulting in inefficient filling and poor safety.

Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.

Disclosure of Invention

The invention aims to provide an automatic clamping and pressurizing system which can improve the filling and pressurizing efficiency and improve the safety performance.

In order to achieve the purpose, the invention adopts the following technical scheme:

an automatic clamping pressurization system comprises an air inlet source, a pressure regulating valve, a first pneumatic valve, a second pneumatic valve, a pneumatic switch and an air cylinder,

the pneumatic switch comprises an air inlet, a first pressure relief opening, a first interface and a second interface,

the first pneumatic valve comprises a first air inlet, a first starting port, a first closing port and a first air outlet,

the second pneumatic valve comprises a second air inlet, a second starting port, a second closing port and a second air outlet,

the air inlet source is respectively communicated with an air inlet of the pressure regulating valve and the first air inlet, the first air outlet is communicated with the second air inlet, and an air outlet of the pressure regulating valve is communicated with the air inlet of the pneumatic switch; the first interface is respectively communicated with the first closing port and the second starting port, and the second interface is respectively communicated with the first starting port and the second closing port;

the cylinder comprises a front cylinder cover, a cylinder barrel, a rear cylinder cover, a piston rod and a piston, the front cylinder cover and the rear cylinder cover are respectively fixedly connected with the two ends of the cylinder barrel in a one-to-one correspondence mode, the inner cavity of the front cylinder cover and the inner cavity of the rear cylinder cover are respectively communicated with the inner cavity of the cylinder barrel, the piston rod is inserted into the cylinder and penetrates out of the front cylinder cover, one end, penetrating out of the front cylinder cover, of the piston rod is detachably connected with a connector used for pressurization, the piston is fixedly connected with the other end of the piston rod, an air transmission hole axially penetrating through the piston rod is formed in the piston rod, a stop block is hermetically connected with one end, corresponding to the end far away from the connector, of the stop block, one end, close to the rear cylinder cover is provided with a groove, a side hole communicated with the air transmission, the area of the longitudinal section of the side hole is smaller than that of the longitudinal section of the rear cylinder cover, a first air receiving port communicated with the inner cavity of the front cylinder cover is formed in the front bumper cover, a second air receiving port communicated with the inner cavity of the rear cylinder cover is formed in the rear cylinder cover, the first air receiving port is communicated with a second starting port and a communication pipeline between the first ports, and the second air receiving port is communicated with a first air outlet and a communication pipeline between the second air inlets.

Preferably, the front cylinder cover and the rear cylinder cover are respectively provided with a first sealing ring at the joint with the cylinder barrel.

Preferably, at least one step position is arranged at the position where the piston rod is connected with the piston, and a second sealing ring is arranged in each step position.

Preferably, the outer wall of the piston is provided with at least two sealing grooves, and a third sealing ring is arranged in each sealing groove.

Preferably, the front cylinder cover is fixedly connected with a dustproof sealing ring and a guide ring which are arranged around the piston rod.

Preferably, the front end surface and the rear end surface of the piston are respectively fixedly connected with a cushion pad.

By adopting the design scheme, the invention has the beneficial effects that: the first interface of the pneumatic switch is respectively communicated with the first closing port and the second opening port, the second interface of the pneumatic switch is respectively communicated with the first opening port and the second closing port, when the second interface of the pneumatic switch is opened by gas, the first pneumatic valve is opened, the second pneumatic valve is closed, after the gas of an air inlet source enters the second air receiving port of the cylinder, the stop block is firstly pushed to enable the piston rod to drive the piston to slide towards the front cylinder cover, meanwhile, the gas also enters the gas transmission hole from the side hole, when the piston abuts against the front cylinder cover, the connector on the piston rod is automatically matched with a bottle head valve of a fire fighting container tank to be pressurized, the gas in the front cylinder cover can be discharged through the first opening of the pneumatic switch, the gas in the gas transmission hole starts to pressurize the fire fighting container pressure relief tank, the automatic clamping pressurization system pushes the piston rod to enable the connector to be matched with the bottle head valve firstly through the gas of the air inlet source, then, pressurization is carried out through the air delivery hole of the piston rod, so that manual clamping of the connector and a handheld pressurization gun are avoided, and the filling pressurization efficiency and the safety performance are effectively improved.

Drawings

FIG. 1 is a schematic structural view of an automatic clamping and pressurizing system of the present invention;

FIG. 2 is a schematic view of the cylinder of the present invention;

in the figure: 10. a pressure regulating valve,

20. a first pneumatic valve 21, a first air inlet 22, a first starting port 23, a first closing port 24, a first air outlet,

30. a second pneumatic valve 31, a second air inlet 32, a second starting port 33, a second closing port 34, a second air outlet,

40. a pneumatic switch 41, a first pressure relief opening 42, a first interface 43, a second interface,

50. cylinder 51, front cylinder cover 511, first air inlet 52, cylinder barrel 53, rear cylinder cover 531, second air inlet 54, piston rod 55 and piston,

a. the sealing device comprises a first sealing ring, a side hole, a stopper, a c1 groove, a d, a second sealing ring, a f, a dustproof sealing ring, a g guide ring, a h, a buffer cushion, an x1, a flat washer, an x2 spring washer, an x3 and a nut.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-2, the automatic clamping pressurization system comprises an air inlet source, a pressure regulating valve 10, a first pneumatic valve 20, a second pneumatic valve 30, a pneumatic switch 40 and an air cylinder 50, wherein the air inlet source is an air pump capable of delivering 2.0MPa of air, and the pressure regulating valve 10 emphasizes the air pressure to 0.8 MPa.

The pneumatic switch 40 includes a first relief port 41, a first port 42, and a second port 43.

The first pneumatic valve 20 includes a first inlet port 21, a first actuation port 22, and first closure port 23 and a first outlet port 24.

The second air-operated valve 30 includes a second air inlet port 31, a second activation port 32, a second shut port 33, and a second air outlet port 34.

The air inlet source is respectively communicated with the air inlet of the pressure regulating valve 10 and the first air inlet 21, and the air inlet source of the embodiment is connected with a three-way joint and is communicated with the air inlet of the pressure regulating valve 10 and the first air inlet 21 through the three-way joint.

The first air outlet 24 is communicated with the second air inlet 31, and the air outlet of the pressure regulating valve 10 is communicated with the air inlet of the air inlet switch 40; the first port 42 communicates with the first closing port 23 and the second opening port 32, respectively, and the second port 43 communicates with the first opening port 22 and the second closing port 33, respectively.

The cylinder 50 comprises a front cylinder cover 51, a cylinder barrel 52, a rear cylinder cover 53, a piston rod 54 and a piston 55, wherein the front cylinder cover 51 and the rear cylinder cover 53 are respectively fixedly connected to two ends of the cylinder barrel 52 in a one-to-one correspondence manner, an inner cavity of the front cylinder cover 51 and an inner cavity of the rear cylinder cover 53 are respectively communicated with an inner cavity of the cylinder barrel 52, the front cylinder cover 51 and the rear cylinder cover 53 of the embodiment are both fixed on the cylinder barrel 52 through threaded connection, first sealing rings a are respectively arranged at the joints of the front cylinder cover 51 and the cylinder barrel 52, and the first sealing rings a are arranged at the joints of the front cylinder cover 51 and the cylinder barrel 52, so that the sealing performance of the joints of the front cylinder cover 51 and the cylinder barrel.

The piston rod 54 is inserted into the cylinder 50 and penetrates out of the front cylinder cover 51, one end of the piston rod 54 penetrating out of the front cylinder cover 51 is detachably connected with a connector for pressurization, and the piston 55 is fixedly connected to the other end of the piston rod, wherein the connector refers to a component used for being matched with a bottle head valve of a fire-fighting container.

A gas transmission hole axially penetrating through the piston rod 54 is formed in the piston rod 54, the piston rod 54 of the embodiment is a hollow rod with a hollow cavity, the hollow cavity is arranged along the axial direction of the piston rod 54, the hollow cavity of the piston rod 54 is the gas transmission hole, one end of the piston rod 54, which is far away from the connector, is hermetically connected with a stop c, one end of the stop c, which is close to the rear cylinder cover 53, is provided with a groove c1, a side hole b communicated with the gas transmission hole is formed in the position, which corresponds to the position between the stop c and the piston 55, of the piston rod 54, the area of the longitudinal section of the side hole b is smaller than that of the longitudinal section of the inner cavity of the rear cylinder cover 53, the longitudinal section of the side hole b is a longitudinal section parallel to the axial direction of the piston rod 54, the longitudinal section of the inner cavity of the rear cylinder cover 53 is a longitudinal section perpendicular to the axial direction of, the end of the rear cylinder cover 53 corresponding to the end far away from the piston 55 is provided with a second air receiving port 531 communicated with the inner cavity of the rear cylinder cover 53, the second air receiving port 531 is communicated with the groove c1, the first air receiving port 511 is communicated with a communication pipeline between the second starting port 32 and the first connector 42, and the second air receiving port 531 is communicated with a communication pipeline between the first air outlet 24 and the second air inlet 31.

The piston rod 54 of the embodiment is sleeved with a flat washer x1 and a spring washer x2 corresponding to an end away from the connector, the flat washer x1 abuts against the piston 55, and the flat washer x1 and the spring washer x2 are fixed on the piston rod 54 through a nut x3 to prevent the piston 55 from falling off. The nut x3 has a clearance with the stop c, and the side hole b is located at the position of the piston rod corresponding to the position between the nut x3 and the stop c. +

In a preferred embodiment of the present invention, at least one step is provided at a position where the piston rod 54 is connected to the piston 55, a second sealing ring d is provided in each step, and the piston rod 54 of the present embodiment is provided with one step, and the second sealing ring d is mounted on the step to enhance the sealing connection between the piston rod 54 and the piston 55.

As a preferable mode of the present embodiment, at least two seal grooves are provided on the outer periphery of the piston 55, a third seal ring e is provided in each seal groove, two seal grooves are provided on the outer wall of the piston 55 in the present embodiment, the third seal ring e is a V-shaped seal ring, and the sealing performance between the piston and the cylinder 52 is enhanced by providing the third seal ring e.

As a preferable mode of the present embodiment, a dust seal f and a guide ring g disposed around the piston rod 54 are fixedly connected to the front cylinder head 51; the dust groove has been seted up corresponding to the position department of keeping away from cylinder 52 to preceding cylinder cap 51 of this example, and dustproof sealing washer f installs in the dust groove, and guide ring g fixed connection is in preceding cylinder cap 51 corresponding to the position department between dust groove and the first gas port 511, and guide ring g is used for keeping apart the friction between piston rod 54 and the preceding cylinder cap 51 when piston rod 54 stretches out and draws back, prolongs the life of cylinder, reduces the noise of cylinder during operation.

In a preferred embodiment of the present invention, the front and rear end surfaces of the piston 55 are fixedly connected with cushion pads h, and at this time, the flat gasket x1 abuts against the cushion pads h, so that the cushion pads h are provided to reduce direct rigid impact with the front and rear cylinder covers 51 and 53 when the piston 55 extends and contracts forward and backward, thereby reducing noise during operation of the cylinder.

To sum up, when the second port 43 of the pneumatic switch 40 is opened and the first port 42 is closed, the first pneumatic valve 20 is opened by 0.8MPa of gas, and the second pneumatic valve 30 is closed, after 2.0MPa of gas from the gas inlet source enters the second gas port 531 of the cylinder 50, because the area of the longitudinal section of the side hole b is smaller than the area of the longitudinal section of the inner cavity of the rear cylinder cover 53, there is a pressure difference between the inner cavity of the rear cylinder cover 53 and the side hole b, the gas will first push the stopper to make the piston rod 54 drive the piston 55 to slide towards the front cylinder cover 51, and at the same time, the gas will enter the gas delivery hole through the side hole b, when the piston 55 abuts against the front cylinder cover 51, the connector on the piston rod 54 will automatically match with the cylinder head valve of the fire fighting container tank to be pressurized, where the matching means that the connector is hermetically connected to the cylinder head valve, and the gas in the front cylinder cover 51 will be discharged through the first pressure relief port 41 of the pneumatic, gas of the gas inlet source enters the gas transmission hole through the side hole b and is pressurized to the fire-fighting container tank through the piston rod; this automatic clamping pressurization system promotes piston rod 54 through the gas of air inlet source and makes the connector cooperate with the bottle head valve earlier, and the gas transmission hole of rethread piston rod 54 pressurizes, has avoided artifical clamping connector and handheld pressure rifle, has effectively enough improved filling pressurization efficiency and security performance.

When the pressure of the container tank is increased to the required pressure, the first interface 42 of the pneumatic switch 40 is opened and the second interface 43 is closed, the first pneumatic valve 20 is closed by the gas of 0.8MPa and the second pneumatic valve 30 is opened, the gas of 2.0MPa is blocked by the first pneumatic valve 20, the gas of 0.8MPa enters the cylinder from the first air-receiving port 511, the piston rod 54 is pushed to drive the piston 55 to slide towards the rear cylinder cover 53, and the pressure in the cylinder 50 is discharged from the second air outlet 34.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.