CN2503296Y

CN2503296Y - Quick connection

Info

Publication number: CN2503296Y
Application number: CN 01257937
Authority: CN
Inventors: 慕容东林
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-11-13
Filing date: 2001-11-13
Publication date: 2002-07-31
Anticipated expiration: 2011-11-13

Abstract

The utility model discloses a fast joint including a fast connecting part with an external opening sleeve, a connecting sleeve and a joint as well as a valve body arranged inside a joint cavity; wherein, the connecting sleeve is provided with an intubation tube which is sealed and connected loosely with an internal hole on the joint heat; the joint head is communicated with the joint cavity through the internal hole. The utility model is characterized in that: the valve body mainly includes a column valve and a pressure spring; wherein, the head of the column valve is sealed and joint loosely with the internal hole of the joint head; the pressure spring is arranged between the column valve and the internal hole of the joint head; and the column valve head is provided with an air guide access. Compared with the prior art, the utility model has the advantages of smooth air flowing, reliable sealing, uneasy damages on the sealing ring and durable utilization.

Description

A kind of quick-acting joint

Technical field:

The utility model relates to the device that a kind of fluid passage connects fast.

Background technique:

As shown in Figure 1, the existing quick quick-acting joint that connects of blast tube that is used for mainly partly constitutes by connecing part and valve body soon.Connect part soon mainly by connecting sleeve 10, fittings body 9, interior top cover 14, the outer cover 7 of opening, outer casing spring 8, interior sleeve spring 13, steel ball 6, Steel Cable Baffle Ring 16, intubate 11, joint 4 constitutes, intubate 11 is fixed in the middle part of connecting sleeve 10, fittings body 9 is fixed on the connecting sleeve 10, the head of fittings body 9 has inwardly protruded platform, afterbody has the platform to outer lug, interior top cover 14 afterbodys have the platform to outer lug, 14 in interior top cover is arranged in the fittings body 9 and the afterbody platform of the head platform of fittings body 9 and interior top cover 14 is buckled together mutually, top cover 14 and connecting sleeve were 10 in interior sleeve spring 13 was arranged on, the outer head of opening cover 7 has inwardly protruded baffle ring, outer casing spring 8 is arranged between baffle ring and fittings body 9 afterbody platforms, around fittings body 9 heads, evenly be provided with through hole, steel ball 6 is arranged in the through hole, Steel Cable Baffle Ring 16 is arranged on the cephalic par of fittings body, head at joint 4 is provided with annular recess, is provided with the seal ring 15 with the sealing of intubate 11 outer walls on joint 4 endoporus; Valve body part mainly is actively socketed on the pressure spring 17 that the plunger 18 of joint end is arranged between plunger 18 and joint by slip and constitutes, plunger 18 is provided with the unidirectional endoporus that communicates with the joint chamber, the head of plunger 18 is provided with annular recess, be evenly equipped with the through hole that communicates with the plunger endoporus around the groove, on inner nosepiece wall, be provided with seal ring 2 sealing of plunger 18 grooves.During work, connecting sleeve with partly link together with gas, joint then partly links together with air feed, intubate on the connecting sleeve is inserted on the joint endoporus, and be tightly connected by seal ring and plug, fittings body extend on the annular recess of joint and with steel ball and is sent in the annular recess, the outer unlatching under the drive that is enclosed within outer casing spring moves forward, make its inner concave platform steel ball is compressed between the annular recess and fittings body head through hole of joint, like this, joint and connecting sleeve are linked together securely, at this moment, be inserted into the interior intubate of joint, make the annular recess of plunger leave seal ring plunger jack-up, like this, by the through hole on the plunger annular recess, the unidirectional endoporus of plunger, intubate, connecting sleeve partly is connected together with the air feed part with gas.To will partly separate with air feed with the gas part, then as long as the outer cover of opening of pulling, making steel ball break away from outer unlatching overlaps the compacting of inner concave platform and can not butt joint play fixation, like this, joint breaks away from connecting sleeve under the jacking of interior top cover, the plunger in the joint moves forward under the effect of pressure spring after losing the jacking of intubate, and the sealed again circle of annular recess is sealed, like this, the air feed part just can outwards not revealed gas from the joint.This kind quick-acting joint is owing to sealed and self is to the restriction of requirement of strength, the ventilation gross area that is arranged on the through hole on the annular recess of plunger little and vertical and gas flow direction, therefore, gas flow is freely not suitable, and, seal ring is damaged on the limit of sharp keen annular recess easily, thereby has influenced the sealing reliability and the durability of quick-acting joint.

Summary of the invention:

Goal of the invention of the present utility model is to provide that a kind of gas flow is freely suitable, sealing reliability is high, seal ring not easy damaged, long-lived quick-acting joint.

The utility model is to realize like this, comprise and have the outer valve body part that connects partly and be arranged on the joint inner chamber soon of opening cover, connecting sleeve, joint, have intubate on the connecting sleeve, on the head that intubate sealing is actively socketed on joint and the endoporus that the joint inner chamber communicates, its specialization is that the valve body part mainly is made of column valve, pressure spring, the head of column valve is salable to be actively socketed on the joint head endoporus, and pressure spring is arranged between column valve and joint endoporus, and the column valve head is provided with air guide channel.During work, when connecting sleeve separates with joint, column valve is inserted on the joint endoporus at the effect lower seal of pressure spring, make the air guide channel of column valve head also enter on the joint endoporus fully, like this, the joint inner chamber is hedged off from the outer world fully, only with gas supply part branch that it is fixed together communicate, when linking together with connecting sleeve that partly links together with gas and joint, the intubate of inserting on the connecting sleeve in the joint endoporus pushes up the column valve head from the joint inner chamber, the air guide channel of column valve head is exposed in the joint inner chamber, like this, the gas that enters the air feed part in the joint inner chamber just is supplied to gas along air guide channel inflow intubate endoporus and by connecting sleeve and partly uses.When needing to cut off source of the gas, only need the outer cover of opening of pulling, connecting sleeve is separated with joint, column valve is inserted on the joint endoporus at the effect lower seal of pressure spring, make the air guide channel of column valve head also enter on the joint endoporus fully, like this, the joint inner chamber is hedged off from the outer world fully, thereby plays the effect of cutting off source of the gas.

Here, the pillar outer wall of the column valve above the air guide channel of column valve is provided with seal ring, is provided with seal washer on the locating face of column valve.During work, when connecting sleeve separates with joint, column valve enters the joint endoporus and stops on the locating face under the effect of spring, at this moment, seal ring on the column valve pillar also is sealed in the joint endoporus along with column valve enters in the joint endoporus and with column valve, seal washer on the column valve locating face is sealing between also with import of joint endoporus and column valve locating face under the pressure effect of spring and gas, owing to be double seal, thereby improved valve body sealing reliability and serviceability partly widely, avoided seal ring to be damaged by the sharp keen edge of work.

Here, the air guide channel of column valve can be the inclined-plane passage that communicates with intubate endoporus on the connecting sleeve, also can be other passage that communicates with the intubate endoporus.

People cut off source of the gas with instrument for convenience, open to put outside to be provided with the fire-fighting pull bar.

The utility model compared with the prior art, owing to adopted the column valve that has the inclined-plane passage, and there is not sharp keen limit on the motion sealing surface of column valve, make the gas of source of the gas be introduced into the joint inner chamber, consistent along direction then with gas flow direction, size almost with connecting sleeve on the mouth of pipe inclined-plane of the same size passage of intubate enter in the intubate, thereby have that gas flow is freely suitable, sealing reliability is high, seal ring not easy damaged, long-lived advantage.

Description of drawings:

Fig. 1 is the structural representation of prior art;

Fig. 2 is a structural representation of the present utility model.

Embodiment:

Now in conjunction with the accompanying drawings and embodiments the utility model is described in further detail:

As shown in Figure 2, the utility model mainly partly constitutes by connecing part and valve body soon, connect part soon mainly by connecting sleeve 1, fittings body 2, interior top cover 3, the outer cover 4 of opening, outer casing spring 5, interior sleeve spring 6, steel ball 7, Steel Cable Baffle Ring 8, intubate 9, joint 10 constitutes, intubate 9 is fixed in the middle part of connecting sleeve 1, fittings body 2 is fixed on the connecting sleeve 1, the head of fittings body 2 has inwardly protruded platform 11, afterbody has the platform 12 to outer lug, interior top cover 3 afterbodys have the platform 13 to outer lug, 3 in interior top cover is arranged in the fittings body 2 and the afterbody platform 13 of the head platform 11 of fittings body 2 and interior top cover 3 is buckled together mutually, top cover 3 and connecting sleeve were 1 in interior sleeve spring 6 was arranged on, the outer head of opening cover 4 has inwardly protruded baffle ring 14, outer casing spring 5 is arranged on 12 on baffle ring 14 and fittings body 2 afterbody platforms, around fittings body 2 heads, evenly be provided with through hole 15, steel ball 7 is arranged in the through hole 15, Steel Cable Baffle Ring 8 is arranged on the cephalic par of fittings body 2 to prevent that external-open from opening cover 4 and in use spinning off from fittings body 2, head at joint 10 is provided with annular recess 16, on joint 16 endoporus 17, be provided with three seals circle 18 with the sealing of intubate 9 outer walls, adopt three seals circle 18 can prevent the motion off-straight direction of intubate 9, thereby improved sealability, the outer cover 4 of opening is provided with fire-fighting pull bar 25, the valve body part is mainly by column valve 19, pressure spring 20 constitutes, the head of column valve 19 is salable to be actively socketed on the joint 10 head endoporus 17, pressure spring 20 is arranged on column valve 19 tail ends, column valve 19 heads are provided with air guide channel 21, the pillar outer wall of the column valve 19 above the air guide channel 21 of column valve 19 is provided with seal ring 22, be provided with seal washer 24 on the locating face 23 of column valve 19, the air guide channel 21 of column valve 19 is the inclined-plane passages that communicate with intubate 9 endoporus on the connecting sleeve 1.

Claims

1, a kind of quick-acting joint, comprise and have the outer valve body part that connects partly and be arranged on the joint inner chamber soon of opening cover, connecting sleeve, joint, have intubate on the connecting sleeve, on the head that intubate sealing is actively socketed on joint and the endoporus that the joint inner chamber communicates, it is characterized in that the valve body part mainly is made of column valve, pressure spring, the head of column valve is salable to be actively socketed on the joint head endoporus, and pressure spring is arranged between column valve and joint endoporus, and the column valve head is provided with air guide channel.

2, quick-acting joint according to claim 1 is characterized in that the pillar outer wall of the column valve above the air guide channel of column valve is provided with seal ring, is provided with seal washer on the locating face of column valve.

3, quick-acting joint according to claim 1, the air guide channel that it is characterized in that column valve can be the inclined-plane passages that communicates with intubate endoporus on the connecting sleeve.

4, quick-acting joint according to claim 1 is characterized in that opening outside putting and is provided with the fire-fighting pull bar.

5, quick-acting joint according to claim 1 is characterized in that being provided with the three seals circle with the sealing of intubate outer wall on the joint endoporus.