CN217519440U

CN217519440U - Anti-backflow buckling connector

Info

Publication number: CN217519440U
Application number: CN202221672051.5U
Authority: CN
Inventors: 潘仙可; 王荣; 潘仙标
Original assignee: Wenzhou Yongbo Fluid Equipment Co ltd
Current assignee: Wenzhou Yongbo Fluid Equipment Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-09-30
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses a backflow-preventing buckling and pressing joint, which has the key points of the technical proposal that the joint comprises an input pipe and an output pipe provided with an inserting pipe, and a backflow-preventing mechanism is arranged between the output pipe and the input pipe; the backflow prevention mechanism comprises a mounting pipe, the mounting pipe is communicated with the input pipe and the output pipe, the interior of the mounting pipe is elastically connected with a piston pipe, a fluid cavity is arranged in the piston pipe, and an opening is formed in one end, close to the input pipe, of the fluid cavity; a plurality of output holes are arranged on the inner wall of the periphery of one end of the fluid cavity close to the output pipe; a sealing gasket positioned between the output hole and the output pipe is also fixed on the outer wall of one end of the piston pipe close to the output pipe; the backflow prevention mechanism can prevent residual gas in the hose from flowing back when the hose at one end is disassembled, so that the residual gas is discharged into the air to pollute the environment, and meanwhile, the waste of resources is reduced; still including withholding the sleeve, withholding and being equipped with locking mechanism between sleeve and the output tube, locking mechanism can strengthen withholding the firm in connection nature between sleeve and the output tube, has avoided becoming flexible to drop.

Description

Anti-backflow buckling connector

Technical Field

The utility model relates to a pipe fitting technical field, concretely relates to prevent withholding of refluence connects.

Background

The hose is widely used in the fields of industry, life and the like as a conveying pipeline for various gases and liquids. In order to facilitate the use of the hose, the two ends of the hose are usually provided with buckling joints; when the gas is conveyed, when the gas conveying equipment needs to be disassembled for maintenance, the hose of the connecting equipment needs to be disassembled, and at the moment, because the hoses are communicated with each other, residual gas in the hoses flows back and leaks into the air, so that the waste of media and even air pollution are caused; and current crimping joint is easily become flexible when receiving the collision impact and is come off to lead to being connected insecure with the junction of hose.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a backflow-preventing buckling and pressing joint which can prevent the residual gas in a hose from flowing back after the air supply of equipment is stopped, reduce the gas discharged into the air, reduce the pollution to the environment and simultaneously reduce the waste of media; and the connection firmness of the buckling and pressing joint and the hose is ensured.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a backflow-preventing buckling and pressing joint comprises a joint body, and is characterized in that the joint body comprises an input pipe and an output pipe provided with an inserting pipe, and a backflow-preventing mechanism is arranged between the output pipe and the input pipe; the backflow prevention mechanism comprises a mounting pipe, two ends of the mounting pipe are in threaded connection with the input pipe and the output pipe respectively, the mounting pipe is communicated with the input pipe and the output pipe, the mounting pipe is elastically connected with a piston pipe, a fluid cavity is arranged in the piston pipe, and an opening is formed in one end, close to the input pipe, of the fluid cavity; a plurality of output holes are formed in the inner wall of the periphery of one end, close to the output pipe, of the fluid cavity; a gap sealing gasket for sealing and installing the pipe and the piston pipe is further fixed on the outer wall of one end, close to the output pipe, of the piston pipe, and the sealing gasket is located between the output hole and the output pipe;

the device also comprises a buckling sleeve matched with the insertion pipe, and a locking mechanism is arranged between the buckling sleeve and the output pipe.

The utility model is further arranged in that the locking mechanism comprises a thread cylinder arranged at one end of the buckling sleeve opposite to the output pipe, the inner wall of the thread cylinder is provided with threads and the outer side of the thread cylinder is provided with a locking ring;

one end of the output pipe, which is opposite to the thread cylinder, is provided with a thread groove in threaded connection with the thread cylinder, a plurality of locking cavities are distributed on the inner wall on the peripheral side of the thread groove, sliding shafts are connected in the locking cavities in a sliding manner, and locking claws clamped with locking rings are hinged on the sliding shafts; a locking spring is also arranged between the sliding shaft and the locking cavity; the output tube is also elastically connected with a push rod which drives the sliding shafts to slide.

The utility model discloses still further set up to, the one end that the installation pipe is close to the output tube is provided with the inside toper annular of intercommunication installation pipe, seal ring and toper annular looks butt.

The utility model discloses still further set up to, be provided with the sealed piece of annular on the installation inside pipe wall, work as when seal ring offseted with the toper annular, the sealed piece of annular is located delivery outlet week side.

The utility model is further arranged in that the inner wall of the mounting pipe is also provided with a fixed plate which is positioned at one side of the annular sealing block facing the input pipe and is provided with a sealing groove between the annular sealing block and the fixed plate, and a sealing ring which is propped against the piston pipe is arranged in the sealing groove; the piston tube is close to the one end of input tube still is provided with the connecting cylinder that the external diameter is greater than the piston tube, be provided with between connecting cylinder and the fixed plate cup joint with the piston tube outer spring.

To sum up, the beneficial effects of the utility model are that:

1. compared with the prior art, the backflow prevention mechanism is arranged between the input pipe and the output pipe, so that gas backflow in the front-end hose can be well avoided when the gas transmission equipment does not work; when the gas transmission equipment stops gas transmission of the hose and the hose on the gas transmission equipment needs to be disassembled, the backflow prevention mechanism can reduce backflow of gas in the hose to the gas transmission end, so that the amount of gas overflowing in the hose after one end of the hose is disassembled is reduced, pollution of the gas in the hose to surrounding air is reduced, and waste of media is reduced.

2. The output pipe and the input pipe are in threaded connection with the two ends of the installation pipe, so that the backflow prevention mechanism is convenient to install and detach, a worker can more conveniently overhaul and maintain the plug-in pipe or the backflow prevention mechanism, and the service life of the buckling and pressing connector is prolonged.

3. Locking mechanism can be convenient locking withhold being connected between sleeve and the output tube, has avoided withholding the sleeve and not hard up when receiving vibrations or collision, takes place to break away from with the output tube even, has guaranteed to withhold the sleeve and can make hose and grafting firm in connection, has avoided revealing of medium in the use.

Drawings

Fig. 1 is a sectional configuration view of the present embodiment.

FIG. 2 is a view showing the connection structure of the output tube and the crimping sleeve of this embodiment.

Fig. 3 is an enlarged view of the locking mechanism of the present embodiment.

Reference numerals: 1-an input tube; 2, outputting a pipe; 3-inserting a tube; 4-backflow prevention mechanism; 401-installing a tube; 402-a piston tube; 403-a fluid chamber; 404-an opening; 405-an output aperture; 406-a sealing gasket; 5-a conical ring groove; 6-annular sealing block; 7-fixing the plate; 9-sealing ring; 10-a connecting cylinder; 11-a spring; 12-crimping the sleeve; 13-a locking mechanism; 1301-a threaded cylinder; 1302-a locking ring; 1303-thread groove; 1304-a lock chamber; 1305-a sliding shaft; 1306-locking pawl; 1307-locking spring; 1308 — push rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-3, the present embodiment discloses a backflow-preventing buckling-pressing joint, which includes a connector 1, where the connector 1 includes an input pipe 1 and an output pipe 2 provided with an insertion pipe 3, and a backflow-preventing mechanism 4 is provided between the output pipe 2 and the input pipe 1; the backflow prevention mechanism 4 comprises a mounting pipe 401, two ends of the mounting pipe 401 are respectively in threaded connection with the input pipe 1 and the output pipe 2, the mounting pipe 401 is communicated with the input pipe 1 and the output pipe 2, the interior of the mounting pipe 401 is elastically connected with a piston pipe 402, a fluid cavity 403 is arranged in the piston pipe 402, and an opening 404 is arranged at one end, close to the input pipe 1, of the fluid cavity 403; a plurality of output holes 405 are arranged on the inner wall of the periphery of the fluid cavity 403 close to one end of the output pipe 2; a gap sealing gasket 406 for sealing and installing the gap between the tube 401 and the piston tube 402 is further fixed on the outer wall of one end of the piston tube 402 close to the output tube 2, and the sealing gasket 406 is positioned between the output hole 405 and the output tube 2;

as shown in fig. 1, when fluid enters from one end of the input pipe 1 through the pipeline, the fluid enters the fluid chamber 403 of the piston pipe 402 through the opening 404, and then the piston pipe 402 moves toward the output pipe 2 against the force of the spring 11 under the action of the fluid, so that the sealing washer 406 is away from the conical ring groove 5 of the mounting pipe 401, and the fluid enters the output pipe 2 through the output hole 405 and is then delivered; after the gas transmission equipment stops the air feed, spring 11 can drive piston pipe 402 and remove towards the one end of input tube 1, thereby make seal ring 406 offset with the toper annular of installation pipe 401, the realization is to the sealed of clearance between installation pipe 401 and the piston pipe 402, and then avoided the fluid in the hose to pass through delivery outlet 405 backward flow, when having guaranteed to dismantle the hose on the gas transmission equipment, the gas in all the other hoses can not flow back, it causes the pollution to the surrounding environment in remaining gas release to the air in the hose to have avoided, the waste of medium has been reduced simultaneously.

As shown in fig. 2-3, the insertion tube 3 is further provided with a matched buckling sleeve 12, and a locking mechanism 13 is arranged between the buckling sleeve 12 and the output tube 2;

the locking mechanism 13 comprises a threaded cylinder 1301 arranged at one end of the buckling sleeve 12 opposite to the output pipe 2, threads are arranged on the inner wall of the threaded cylinder 1301, and a locking ring 1302 is arranged on the outer side of the threaded cylinder 1301;

a thread groove 1303 in threaded connection with the thread cylinder 1301 is arranged at one end, opposite to the thread cylinder 1301, of the output pipe 2, a plurality of locking cavities 1304 are distributed on the inner wall of the peripheral side of the thread groove 1303, sliding shafts 1305 are connected in the locking cavities 1304 in a sliding mode, and locking claws 1306 clamped with the locking rings 1302 are hinged to the sliding shafts 1305; a locking spring 1307 is also arranged between the sliding shaft 1305 and the locking cavity 1304; the output tube 2 is also elastically connected with a push rod 1308 for driving a plurality of sliding shafts 1305 to slide.

The structure can avoid the falling and loosening between the buckling sleeve 12 and the output pipe 2, and improve the connection firmness between the hose and the splicing pipe; when the hose is connected, the hose is inserted into the insertion pipe 3, then the buckling sleeve 12 is sleeved on the hose to extrude the hose, meanwhile, the buckling sleeve 12 is in threaded connection with the threaded groove 1303 through the threaded barrel 1301, in the connection process, the locking ring 1302 on the outer wall of the threaded barrel moves into the threaded groove 1303, meanwhile, the locking claw 1306 hinged to the locking cavity 1304 is pushed, and the locking claw 1306 rotates towards the locking cavity 1304 to be clamped with the locking ring 1302; the locking claw 1306 is attached to the inner wall of the locking cavity 1304 through a locking spring 1307, so that the locking ring 1302 is limited;

when dismantling a thread cylinder 1301, push rod 1308 pushes sliding shaft 1305 to move, so that the locking claw is separated from the inner wall of the locking cavity, at the moment, when the thread cylinder is rotated, locking ring 1302 can drive the locking claw to rotate, the limit of the locking ring is removed, the thread cylinder can be separated from the thread groove, and the buckling sleeve is dismantled.

In this embodiment, one end of the mounting pipe 401, which is close to the output pipe 2, is provided with a conical ring groove 5 communicating with the inside of the mounting pipe 401, and the sealing washer 406 is abutted to the conical ring groove 5.

In this embodiment, an annular sealing block 6 is disposed on the inner wall of the mounting pipe 401, and when the sealing gasket 406 abuts against the conical ring groove 5, the annular sealing block 6 is located on the peripheral side of the output hole 405; the annular seal block 6 can reduce the gap between the output hole 405 and the inner wall of the mounting pipe 401 in a state where gas transmission is stopped, thereby further preventing gas from flowing back through the output hole 405.

In this embodiment, the inner wall of the mounting tube 401 is further provided with a fixing plate 7, the fixing plate 7 is located on one side of the annular sealing block 6 facing the input tube 1, a sealing groove is formed between the fixing plate 7 and the annular sealing block 6, and a sealing ring 9 abutting against the inner wall of the piston tube 402 is arranged in the sealing groove; the one end that the piston pipe 402 is close to input tube 1 still is provided with the connecting cylinder 10 that the external diameter is greater than piston pipe 402, be provided with between connecting cylinder 10 and the fixed plate 7 and cup joint with the outer spring 11 of piston pipe 402, sealing washer 9 offsets with piston pipe 402 inner wall to the fluid backward flow that can avoid the output hole to export has reduced the fluid of input tube simultaneously and has passed through the clearance flow of installation pipe and piston pipe.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. A backflow-preventing buckling and pressing joint comprises a connector, and is characterized in that the connector comprises an input pipe (1) and an output pipe (2) provided with an inserting pipe (3), and a backflow-preventing mechanism (4) is arranged between the output pipe (2) and the input pipe (1); the backflow prevention mechanism (4) comprises a mounting pipe (401) with two ends respectively in threaded connection with the input pipe (1) and the output pipe (2), the mounting pipe (401) is communicated with the input pipe (1) and the output pipe (2), a piston pipe (402) is elastically connected inside the mounting pipe, a fluid cavity (403) is arranged in the piston pipe (402), and an opening (404) is arranged at one end, close to the input pipe (1), of the fluid cavity (403); a plurality of output holes (405) are formed in the inner wall of the periphery of one end, close to the output pipe (2), of the fluid cavity (403); a gap sealing gasket (406) used for sealing and installing the gap between the pipe (401) and the piston pipe (402) is further fixed on the outer wall of one end, close to the output pipe (2), of the piston pipe (402), and the sealing gasket (406) is located between the output hole (405) and the output pipe (2);

the device also comprises a buckling and pressing sleeve (12) matched with the insertion pipe (3), and a locking mechanism (13) is arranged between the buckling and pressing sleeve (12) and the output pipe (2).

2. The anti-backflow buckling-pressing joint as claimed in claim 1, characterized in that the locking mechanism (13) comprises a threaded cylinder (1301) arranged at one end of the buckling sleeve (12) opposite to the output pipe (2), wherein the inner wall of the threaded cylinder (1301) is provided with threads and the outer side is provided with a locking ring (1302);

one end, opposite to the threaded cylinder (1301), of the output pipe (2) is provided with a threaded groove (1303) in threaded connection with the threaded cylinder (1301), a plurality of locking cavities (1304) are distributed on the inner wall of the peripheral side of the threaded groove (1303), sliding shafts (1305) are connected in the locking cavities (1304) in a sliding mode, and locking claws (1306) clamped with locking rings (1302) are hinged to the sliding shafts (1305); a locking spring (1307) is also arranged between the sliding shaft (1305) and the locking cavity (1304); the output pipe (2) is also elastically connected with a push rod (1308) for driving a plurality of sliding shafts (1305) to slide.

3. The anti-backflow buckling connector as claimed in claim 1, wherein one end of the mounting pipe (401) close to the output pipe (2) is provided with a tapered ring groove (5) communicated with the inside of the mounting pipe (401), and the sealing washer (406) abuts against the tapered ring groove (5).

4. A backflow prevention crimp fitting according to claim 3, wherein the inner wall of the mounting tube (401) is provided with an annular sealing block (6), and when the sealing washer (406) abuts against the conical ring groove (5), the annular sealing block (6) is located on the periphery of the output hole (405).

5. The backflow-preventing buckling-pressing joint as claimed in claim 4, wherein a fixing plate (7) is further arranged on the inner wall of the mounting pipe (401), the fixing plate (7) is located on one side, facing the input pipe (1), of the annular sealing block (6), a sealing groove is formed between the fixing plate and the annular sealing block (6), and a sealing ring (9) abutting against the piston pipe (402) is arranged in the sealing groove; one end of the piston tube (402) close to the input tube (1) is also provided with a connecting cylinder (10) with the outer diameter larger than that of the piston tube (402), and a spring (11) sleeved with the piston tube (402) is arranged between the connecting cylinder (10) and the fixing plate (7).