CN201761841U

CN201761841U - Powder backflow-prevention device

Info

Publication number: CN201761841U
Application number: CN2010205100925U
Authority: CN
Inventors: 王海龙; 罗作球; 吴俊�; 姜耿
Original assignee: China Construction Third Engineering Bureau Co Ltd; China Construction Ready Mixed Concrete Co Ltd; China Construction Ready Mixed Concrete Tianjin Co Ltd
Priority date: 2010-08-30
Filing date: 2010-08-30
Publication date: 2011-03-16
Anticipated expiration: 2020-08-30

Abstract

The utility model relates to a powder backflow-prevention device for an arch breaker for a mixing plant. The powder backflow-prevention device comprises a valve body, a stopper, a valve core and a spring; a channel is arranged in the valve body, wherein an air inlet is formed at the left end of the channel, an air outlet is formed at the right end of the channel, an internal thread is arranged at the air inlet, and external threads are arranged at the right end of the valve body; the stopper is arranged in the channel of the valve body, the valve body is connected with the stopper through a pin, a hole or slot for allowing air to pass through is formed on the stopper, and a round hole is formed in the middle of the stopper; the valve core comprises a head part and a handle part, wherein the head part of the valve core adopts a cone and is positioned on the right side of the stopper, and the maximum diameter of the head part of the valve core fits with the diameter of the air outlet; and the left end part of the handle part of the valve core penetrates a circular hole of the stopper, the spring is sleeved at the left end of the handle part of the valve core, the left end of the spring is fixedly connected with the handle part of the valve core, and the right end of the spring is propped against the stopper. The utility model has the characteristics that the powder backflow-prevention device has a simple structure, is convenient to mount and use and can well prevent the powder in the powder can from reflowing to the connecting pipe for the arch breaker.

Description

Anti-powder recycling device

Technical field

The utility model belongs to the concrete mixing plant technical field of construction, is specifically related to a kind of anti-powder recycling device of facilities of mix storied building arch breaking apparatus.

Background technology

At present, in the concrete production industry, the maintenance of facilities of mix storied building plays a part very important to the lasting productive force of enterprise.The timely supply of powder is one of key wherein with carrying.After powder is transported to the powder jar, if having certain moisture, powder self causes hardening of part powder easily, form the arcuation thing that hardens through accumulation, be commonly called as " arch camber ".For preventing the powder arch camber, in the feed bin tapering air blowing arch breaking apparatus is housed, utilize the compressed-air actuated release of solenoid control, pressurized air is blown into the powder jar through connection pipe and carries out the broken arch of powder.But because the connection pipe that arch breaking apparatus has directly is connected with the powder jar, powder has good flowing power simultaneously, and broken arch back powder by gravity can be back in the connection pipe of arch breaking apparatus.Because the connection pipe diameter is less and pipeline is long, the powder that refluxes can block connection pipe, ensuing broken arch work can't be carried out, must connection pipe be taken apart at interface by the staff, the powder in the purge tube and install back the original place after can proceed brokenly the arch.Because pipeline is many, and the powder backflow phenomenon is more frequent, also production is affected when bringing great inconvenience to service personnel.

Summary of the invention

The purpose of this utility model provide a kind of simple in structure, can prevent the anti-powder recycling device that powder refluxes.

To achieve these goals, the technical solution of the utility model is: anti-powder recycling device, and it comprises valve body, block, spool and spring; In the valve body is passage, and the left end of passage is an admission port, and the right-hand member of passage is an air extractor duct, and the admission port place is provided with negative thread, and the right part of valve body is provided with outside thread; Be provided with block in the passage of valve body, valve body is connected with pin with block, and block is provided with and is used for hole or the groove that gas passes through, and the block middle part is provided with circular hole; Spool comprises head and shank, and the head of spool is a cone, and the head of spool is positioned at the right side of block, and the maximum gauge of the head of spool and the diameter of air extractor duct are suitable; The circular hole of block is passed in the left part of the shank of spool, and spring housing is in the left part of the shank of spool, and the left end of spring is captiveed joint with the shank of spool, and the right-hand member of spring props up block.

Block is that (promptly be formed for the groove that gas passes through, its groove and valve body are configured for the hole that gas passes through to crux; Also can directly on block, establish and be used for the hole that gas passes through).

The beneficial effects of the utility model are:

It is 1. simple in structure, easy to install and use, quick,

2. prevent well that powder refluxes in the powder jar in the connection pipe of arch breaking apparatus.

3. reduce the manual maintenance operation, optimize work flow.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A cutaway view of Fig. 1;

Among the figure: 1-valve body, 2-block, 3-air extractor duct, 4-spool, 5-spring, 6-admission port.

The specific embodiment

Anti-powder recycling device, it comprises valve body 1, block 2, spool 4 and spring 5.In the valve body 1 is passage, the left end of passage is an admission port 6, the right-hand member of passage is air extractor duct 3 (admission port 6 is communicated with air extractor duct 3), admission port 6 places are provided with negative thread (negative thread is used for linking to each other with the connection pipe of arch breaking apparatus), and the right part of valve body 1 is provided with outside thread (outside thread is used for being connected with the powder jar).Be provided with block 2 in the passage of valve body 1, valve body 1 is connected with block 2 usefulness pins, and block 2 is crux (being convenient to gas passes through), and block 2 middle parts are provided with circular hole.Spool 4 comprises head and shank, and the head of spool 4 is a cone, and the head of spool 4 is positioned at the right side of block 2, and the diameter of the maximum gauge of the head of spool 4 and air extractor duct 3 is suitable; The circular hole of block 2 is passed in the left part of the shank of spool 4, and the shank diameter of spool 4 is slightly less than the Circularhole diameter of block 2, but guarantees spool 4 sway.Spring 5 is enclosed within the left part of the shank of spool 4, and the left end of spring 5 is captiveed joint with the shank of spool 4, and the right-hand member of spring 5 props up block 2.The left of Fig. 1 is that left and right side is for right.

When using the broken arch of arch breaking apparatus, when high pressure gas enter valve body 1 from admission port 6, spool 4 overcomes spring 5 under the high pressure gas effect elastic force moves to right, and air extractor duct 3 is opened, and break to encircle operation.After broken arch was finished, gaseous tension reduced, and under the powder action of gravity, spool 4 moves to left in spring restoring force and powder jar, and air extractor duct 2 is closed, and plays sealing function, prevented that powder from refluxing and enter in the connection pipe of arch breaking apparatus.This utility model is similar to the check valve in the hydraulic efficiency pressure system, the powder forward by the time loss of pressure little, reverse good airproof performance when obstructed is active in one's movements.

Claims

1. anti-powder recycling device, it comprises valve body, block, spool and spring; In the valve body is passage, and the left end of passage is an admission port, and the right-hand member of passage is an air extractor duct, and the admission port place is provided with negative thread, and the right part of valve body is provided with outside thread; Be provided with block in the passage of valve body, valve body is connected with pin with block, and block is provided with and is used for hole or the groove that gas passes through, and the block middle part is provided with circular hole; Spool comprises head and shank, and the head of spool is a cone, and the head of spool is positioned at the right side of block, and the maximum gauge of the head of spool and the diameter of air extractor duct are suitable; The circular hole of block is passed in the left part of the shank of spool, and spring housing is in the left part of the shank of spool, and the left end of spring is captiveed joint with the shank of spool, and the right-hand member of spring props up block.

2. anti-powder recycling device according to claim 1 is characterized in that described block is a crux.