CN2290748Y

CN2290748Y - Pipeline dredging appts.

Info

Publication number: CN2290748Y
Application number: CN 97234902
Authority: CN
Inventors: 张云冰; 郑友德; 顾长生
Original assignee: Shanghai Limin Industry Co ltd
Current assignee: Shanghai Limin Industry Co ltd
Priority date: 1997-06-25
Filing date: 1997-06-25
Publication date: 1998-09-09
Anticipated expiration: 2007-06-25

Abstract

The utility model discloses a pipeline dredging apparatus, composed of an inflator, a plunger, an air storing cylinder, a trigger, a blocking nozzle, etc. The air extruded by the inflator enters the air storing cylinder after passing through a one-way valve core and the plunger. A guiding duct communicated with the external world is arranged in the air storing cylinder. After high-pressure air is formed in the air storing cylinder, the trigger is triggered to cause the high-pressure air to be jetted out of the guiding duct opening, which forms strong pressure in the blocked pipeline so as to achieve the goal of dredging. The utility model has the advantages of reasonable structure and reliability.

Description

Pipeline drainer

The utility model relates to the small-sized mediation equipment of a kind of supercharging type, particularly relates to a kind of device that is used for dredging pipeline.

At present, China both urban and rural residents living conditions, office, living condition are improved greatly, newly make several ten million square metres in residential houses, office room every year, modern life style is more and more universal, and therefore, thing followed line clogging problem is also increasing, contradiction is quite outstanding, has become very worried pain in the neck feelings in people's daily life.When pipeline is hampered, if ask the professional team that dredges unavoidable time-consuming expensive, and use the manual family expenses dredger of using always now, be commonly called as pipeline drainer into " bellows ", it is too little then to exist generation pressure again, the unfavorable problem of mediation effect.

The purpose of this utility model is: provide a kind of and can effectively overcome above-mentioned defective, the pipeline drainer of tool function of increasing pressure.

The technical solution of the utility model is: a kind of pipeline drainer, by handle, inflating rod, leather cup, air induction mast, gas port and the formations such as unidirectional valve inside that link to each other with gas port, its characteristics are: this pipeline drainer also comprises gas receiver, piston, sealing cap, conduit, for a short time gag somebody and trigger, the gas receiver upper end is provided with a position-limiting tube, this position-limiting tube tube wall offers a negative pressure air-out through hole, the aperture is equipped with one and gags somebody for a short time, for a short time gag somebody and be connected in the trigger end face, also be equipped with a piston in the position-limiting tube, the piston lower end offers a hole, the gas receiver lower end is provided with a upwardly extending conduit, and this conduit is in communication with the outside, and conduit and piston space also are provided with sealing cap.

Owing to adopt such scheme.Be not difficult to draw as drawing a conclusion: the utility model is simple and reasonable for structure, and the mediation effect is good, has promotional value.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is a cross-sectional view of the present utility model:

Fig. 2 is the structural representation of unidirectional valve inside of the present utility model;

Fig. 3 is the structural representation of sealing cap of the present utility model.

As shown in the figure, this pipeline drainer is made of handle 15, inflating rod 14, leather cup 13, air induction mast 10, gas port and the unidirectional valve inside 6 that links to each other with gas port, and 6 of unidirectional valve insides are by overcoat and place slide core and seal ring in the overcoat to form.Unidirectional valve inside 6 has a gas receiver 2, there is a position-limiting tube 7 gas receiver 2 upper ends, its tube wall has been opened a negative pressure air-out through hole, the aperture is equipped with one and gags somebody 9 for a short time, for a short time gag somebody and 9 be connected in trigger 12 end faces, trigger 12 is made of a certain piece and a fastener by pin 11, also be equipped with a piston 4 in the position-limiting tube 7, piston 4 lower ends offer an aperture, and gas receiver 2 lower ends are provided with a upwardly extending conduit 8, this conduit 8 is in communication with the outside, conduit 8 front ends also can connect outward as required gags somebody 1, and 4 in conduit 8 and piston also are provided with sealing cap 3, and sealing cap 3 is "  " shape, hollow and the equal hollow out of two sidewalls form the bi-directional compression plane.The outside, gas receiver 2 upper ends links to each other with last barrel 16, and by seal ring 5 sealings.

Because unidirectional valve inside 6 adopts said structure.So when inflating, air-flow by the upper end air chamber promote slide core dash toward below, and the overhead kick of slide core front end can make slide core can not break away from overcoat, at this moment air-flow just enters lower chamber by the opening of slide core, bleed when returning when inflating rod 14, upper gas chamber forms negative pressure, so slide core can upwards compress in automatic bounce-back, by the seal ring return-air, its performance is better than other unidirectional valve inside; Again because sealing cap 3 adopts said structure, so when piston 4 is gone out, when the plane is pushed down sealing cap 3 end faces and is played seal action, owing in the gas receiver 2 certain pressurized air is arranged, the effect of P2 so the block external diameter of this moment also is under pressure relatively, the pressure in the gas receiver 2 is big more, and the external diameter of then blocking a shot is also big more once the pressure P 2 that circle is subjected to, cause block that a spot of extension is arranged on length, so relatively the enhancing pressurization is played in the piston 4 and the sealing of end face.The stronger gas leakage that prevents becomes flat, and this structure by the method for plane sealing, has higher sealing effect than only.

The utility model is through parts such as inflating rod 14, leather cups 13, natural air is pressed in the gas receiver 2 by unidirectional valve inside 6, piston 4, its unique principle is as follows: pressurized air P, the unidirectional valve inside 6 of process, promote unidirectional valve inside 6 and emit gas, utilize this pressurized gas to eject piston 4, make piston 4 push down the sealing cap 3 of gas receiver 2 tightly, do not make its gas leakage, deflation.Because the sectional area on piston 4 tops removes residual area behind the sealing cap 3 greater than piston 4 bottoms button, so when piston 4 is gone out after, can not rebound automatically, also can not become flexible the pressure to blocking a shot automatically.

Pressurized air P1 in the piston 4 top cavity volumes is in aperture P2 enters gas receiver 2, when inflating rod 14 is return when bleeding.Unidirectional valve inside 6 upper gas chambers form negative pressure.And owing to have pressurized air P1 in the piston 4 top cavity volumes, therefore can promote unidirectional valve inside 6 bullets automatically and return, because the effect of seal ring is eliminated gas leakage deflation phenomenon so can seal return-air immediately.

When inflating for the second time, the upper gas chamber of unidirectional valve inside 6, gas pressure that is to say the cavity volume air pressure on piston 4 tops greater than lower chamber, thus can promote again to emit gas after unidirectional valve inside 6 advances once more, in piston 4 apertures arrive gas receiver 2.So constantly move in circles and make the pressure in the gas receiver 2 more and more higher.When inflating when reaching 45-50 time, the pressurized air of 0.4-0.45MPa is arranged approximately in the gas receiver 2.At this moment gas pressure P1=P2 it greater than the natural air P before inflating, also greater than the pressure P 3 that acts on piston 4 bottoms.

Cocking 12 this moment, make the 9 disengaging negative pressure air-out holes of gaging somebody for a short time of trigger 12 end faces, and like this, piston 4 top cavity volume compressed air P1 overflow from the negative pressure air-out hole immediately, and this moment, gas receiver 2 interior pressurized air had little time to exit from piston 4 apertures.And during trigger 12 venting piston 4 is played oscillating action, at this moment the pressure of P3 is far longer than P1, and under the effect of P3 pressure, piston 4 returns fast and rebounds.As long as the distance of piston 4 motions 2 millimeter, piston 4 venting apertures will all be shut, the active force of P3 strengthens more, make the piston 4 end face quick blocks that break away from of moment, a large amount of high pressure draughts is got by conduit 8 holes, and blocked ducted hydraulic pressure is risen suddenly, and produce one shock wave, form the powerful power of breaking out at liquid internal, impact the foreign material that are blocked, reach the purpose of dredging pipeline.

Claims

1. pipeline drainer, by handle, inflating rod, leather cup, air induction mast, gas port and the formations such as unidirectional valve inside that link to each other with gas port, it is characterized in that: this pipeline drainer also comprises gas receiver, piston, sealing cap, conduit, for a short time gag somebody and trigger, the gas receiver upper end is provided with a position-limiting tube, this position-limiting tube tube wall offers a negative pressure air-out through hole, the aperture is equipped with one and gags somebody for a short time, for a short time gag somebody and be connected in the trigger end face, also be equipped with a piston in the position-limiting tube, the piston lower end offers a hole, the gas receiver lower end is provided with a upwardly extending conduit, and this conduit is in communication with the outside, and conduit and piston space also are provided with sealing cap.

2. a kind of pipeline drainer according to claim 1 is characterized in that: described unidirectional valve inside is made up of overcoat, slide core and seal ring.

3. a kind of pipeline drainer according to claim 1 is characterized in that: described sealing cap is "  " shape, and hollow and the equal hollow out of two sidewalls form the bi-directional compression plane.