CN213452262U

CN213452262U - Double-flange limiting expansion joint for valve

Info

Publication number: CN213452262U
Application number: CN202022269965.4U
Authority: CN
Inventors: 冯红建
Original assignee: Suzhou Youwei Fluid Technology Co ltd
Current assignee: Suzhou Youwei Fluid Technology Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-06-15
Anticipated expiration: 2030-10-13

Abstract

The utility model provides a double-flange limit expansion joint for a valve, which relates to the field of flange expansion joints and comprises a valve pipe, wherein two ends of the valve pipe are fixedly provided with flange plates, one side of the two flange plates is fixedly connected with a connecting sleeve, the inside of the connecting sleeve is mutually laminated with the outside of the valve pipe, the middle part of the valve pipe is fixedly sleeved with two supporting plates, one side of the two supporting plates is fixedly provided with a plurality of positioning screw holes in an annular equidistance, the inside of the positioning screw holes is connected with positioning screw rods in a threaded manner, one end of the positioning screw rods is respectively rotatably connected with one side of the two flange plates, and the bottom of the positioning screw rods is connected with a fixing nut in a threaded manner. Has good practicability.

Description

Double-flange limiting expansion joint for valve

Technical Field

The utility model relates to a flange expansion joint technical field specifically is a spacing expansion joint of two flanges for valve.

Background

The limiting expansion joint is additionally provided with a limiting arrangement on the basis of the original performance of the loose sleeve expansion joint, and is locked by double nuts at the maximum expansion amount, so that the pipeline can freely expand and contract in the allowed expansion amount, and once the maximum expansion amount is exceeded, the limiting effect is achieved, so that the safe operation of the pipeline is effectively ensured, and the limiting expansion joint is particularly suitable for connection in pipelines with vibration or certain inclination and turning.

The position of the flange plate is often adjusted through the threaded rod when the limiting expansion joint for the existing double flanges is installed, abrasion is easily generated between the long-time adjusting flange plate and the valve pipe, and then the sealing performance of the joint is reduced, so that fluid leakage can occur, meanwhile, the fixing effect through the threaded rod is poor, and the joint is easily deformed.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model discloses a spacing expansion joint of two flanges for valve to solve the problem that proposes in the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a spacing expansion joint of two flanges for valve, includes the valve pipe, the equal fixed ring flange that is provided with in both ends of valve pipe, two the equal fixedly connected with connecting sleeve in one side of ring flange, the inside of connecting sleeve laminates with the outside of valve pipe each other, two backup pads, two are cup jointed to the middle part of valve pipe the fixed a plurality of location silk holes of having seted up in the equal annular equidistance of backup pad one side, it is a plurality of the equal threaded connection in inside in location silk hole has the location lead screw, and is a plurality of the one end of location lead screw is rotated with one side of two ring flanges respectively and is connected, and is a plurality of the equal threaded connection in bottom of location lead screw has fixation nut, and is a plurality of one side of fixation nut respectively with one.

Preferably, two the fixed cover in the inside of backup pad is all equipped with solid fixed ring, two solid fixed ring's the equal symmetry in inside has seted up two spouts, two the equal sliding connection in inside of spout has the slide bar, two one side of slide bar respectively with connecting sleeve's both sides fixed connection.

Preferably, two the both sides of slide bar are all fixed and have been seted up the spacing groove, two the equal sliding connection in inside of spacing groove has the stopper, two the stopper all is circular-arc, two the equal fixedly connected with extrusion piece in one side of stopper.

Preferably, one side fixedly connected with connecting plate of extrusion piece, the middle part of connecting plate is fixed and has been seted up the through-hole, the inside rotation of through-hole is connected with the dog, the dog is ring shape, the fixed cover in inside of dog is equipped with the internal thread sleeve, the inside and the outer wall threaded connection of locating screw of internal thread sleeve.

Preferably, the extrusion block is boss-shaped, and the interior of the extrusion block is mutually attached to the outer wall of the connecting sleeve.

Preferably, the outer wall of the valve pipe is fixedly sleeved with two sealing rings, and the outer walls of the two sealing rings are respectively connected with the inner parts of the two connecting sleeves in a sliding manner.

The utility model discloses a spacing expansion joint of two flanges for valve, its beneficial effect who possesses as follows:

1. the utility model discloses an utilize the design of slide bar, can play the effect of a direction when the position of adjusting the ring flange, can not take place the skew of direction when having restricted the ring flange simultaneously and removing, avoided the uneven great frictional force that produces of atress between adapter sleeve and the valve pipe to guaranteed the leakproofness of junction, ensured the junction can not take place fluidic leakage, only need the rotational positioning lead screw can realize the removal of ring flange during the operation, it is very convenient to operate, good practicality has.

2. The utility model discloses an utilize the design of extrusion piece, the position of the rotatory internal thread sleeve adjustment extrusion piece of accessible after having adjusted the ring flange, the design of extrusion piece boss form of deuterogamying, can make the perfect joint of extrusion piece in the outside of connecting sleeve when removing, thereby the area of stress of connecting sleeve has been increased, difficult emergence is out of shape when the connecting sleeve receives the impact, and can adjust the position of extrusion piece at any time according to actual conditions, in time produce between internal thread sleeve and the valve pipe not hard up, the limiting displacement of extrusion piece can also be with the stable cover of connecting sleeve in the outside of valve pipe, avoid the phenomenon of junction snap or deformation to take place, and internal thread sleeve and positioning screw threaded connection, thereby can not occupy too much installation space, accomplish a pole, more convenience when the position of adjusting the ring flange.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the overall explosion structure of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.

In the figure: 1. a valve tube; 2. a flange plate; 3. a connecting sleeve; 4. positioning a screw hole; 5. positioning a screw rod; 6. Fixing a nut; 7. a support plate; 8. a fixing ring; 9. a chute; 10. a slide bar; 11. extruding the block; 12. A connecting plate; 13. a through hole; 14. a stopper; 15. an internally threaded sleeve; 16. a limiting groove; 17. and a limiting block.

Detailed Description

The embodiment of the utility model discloses a double-flange limiting expansion joint for a valve, as shown in figure 1-3, comprising a valve pipe 1, wherein two ends of the valve pipe 1 are both fixedly provided with flange plates 2, one side of the two flange plates 2 is both fixedly connected with a connecting sleeve 3, the interior of the connecting sleeve 3 is mutually attached with the exterior of the valve pipe 1, the middle part of the valve pipe 1 is fixedly sleeved with two supporting plates 7, one side of the two supporting plates 7 is both annularly and equidistantly fixedly provided with a plurality of positioning screw holes 4, the interior of the plurality of positioning screw holes 4 is both in threaded connection with a positioning screw 5, one end of the plurality of positioning screw 5 is respectively in rotating connection with one side of the two flange plates 2, the bottoms of the plurality of positioning screw 5 are both in threaded connection with fixing nuts 6, one side of the plurality of fixing nuts 6 is respectively in fixed connection with one side of the two supporting plates 7, the interior of, two chutes 9 are symmetrically arranged in the two fixing rings 8, slide rods 10 are slidably connected in the two chutes 9, and one sides of the two slide rods 10 are fixedly connected with two sides of the connecting sleeve 3 respectively.

The both sides of two slide bars 10 are all fixed and have been seted up spacing groove 16, the equal sliding connection in inside of two spacing grooves 16 has stopper 17, two stopper 17 all are circular-arcly, the equal fixedly connected with in one side of two stopper 17 extrudees piece 11, it is the boss form to extrude piece 11, and the inside of extruding piece 11 all laminates with connecting sleeve 3's outer wall each other, when not hard up between connecting sleeve 3 and valve pipe 1, it still can play spacing effect to connecting sleeve 3 to extrude piece 11, avoid the junction to warp and split even, stopper 17 and spacing groove 16's sliding connection can play the effect of a direction to the removal of extruding piece 11, thereby can make the tight connecting sleeve 3 of clamp that extrudees piece 11 can be better, guarantee the leakproofness of junction.

One side fixedly connected with connecting plate 12 of extrusion piece 11, the fixed through-hole 13 of having seted up in middle part of connecting plate 12, the inside rotation of through-hole 13 is connected with dog 14, dog 14 is ring shape, internal thread sleeve 15 is equipped with to the fixed cover in inside of dog 14, internal thread sleeve 15's inside and positioning screw 5's outer wall threaded connection reduce the required space of device to accomplish a pole multi-purpose, need not extra solid accessory and assist.

The outer wall of valve pipe 1 is fixed to be cup jointed two sealing rings, and the outer wall of two sealing rings respectively with two connecting sleeve 3's inside sliding connection, slide bar 10 plays the effect of direction to ring flange 2, has avoided ring flange 2 to drive the skew of taking place the angle when connecting sleeve 3 removes to the atress of sealing ring is more even, wearing and tearing in the short time can not appear, has increased the life of sealing ring.

The working principle is as follows: during the use, the operator at first respectively the rotational positioning lead screw 5 rotates, the location lead screw 5 drives two ring flanges 2 and moves to the both ends position of valve pipe 1, drive slide bar 10 synchronous motion when ring flange 2 moves, slide bar 10 moves along the inside of spout 9 to the moving direction of ring flange 2 has been restricted, can not the skew direction when guaranteeing ring flange 2 to move, adjust to and stop rotational positioning lead screw 5 behind the assigned position, can realize ring flange 2 this moment preliminary fixed.

After the position of ring flange 2 is confirmed, rotatory female screw sleeve 15 moves along the outer wall of positioning screw 5, female screw sleeve 15 drives dog 14 and rotates and provide a thrust to connecting plate 12 in the inside of through-hole 13, connecting plate 12 will be followed female screw sleeve 15 synchronous motion, drive extrusion block 11 synchronous motion when connecting plate 12 removes, extrusion block 11 is gradual presss from both sides the outer wall of tight connecting sleeve 3, treat that extrusion block 11 can not stop rotatory female screw sleeve 15 when removing, complete all fixed operation behind the flange 2 adjustment position this moment, the operation is very convenient, and the practicality is good.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a spacing expansion joint of two flanges for valve, includes valve pipe (1), its characterized in that: the equal fixed ring flange (2), two of being provided with in both ends of valve pipe (1) the equal fixedly connected with connecting sleeve (3) in one side of ring flange (2), the inside of connecting sleeve (3) is laminated with the outside of valve pipe (1) each other, two backup pad (7), two have been cup jointed to the middle part of valve pipe (1) is fixed a plurality of locating screw holes (4) have been seted up, it is a plurality of to prop up backup pad (7) one side all the annular equidistance fixed the having of inside of locating screw hole (4) has locating screw (5), and is a plurality of the one end of locating screw (5) is rotated with one side of two ring flanges (2) respectively and is connected, and is a plurality of the equal threaded connection in bottom of locating screw (5) has fixation nut (6), and is a plurality of one side fixed connection with two backup pads (7) respectively of fixation nut (6).

2. The double-flange limit expansion joint for the valve according to claim 1, wherein: two the inside of backup pad (7) is all fixed the cover and is equipped with solid fixed ring (8), two spout (9), two have been seted up to the equal symmetry in inside of solid fixed ring (8) the equal sliding connection in inside of spout (9) has slide bar (10), two one side of slide bar (10) respectively with the both sides fixed connection of connecting sleeve (3).

3. The double-flange limit expansion joint for the valve according to claim 2, wherein: two the both sides of slide bar (10) are all fixed and have been seted up spacing groove (16), two the equal sliding connection in inside of spacing groove (16) has stopper (17), two stopper (17) all are circular-arcly, two the equal fixedly connected with extrusion piece (11) in one side of stopper (17).

4. The double-flange limit expansion joint for the valve according to claim 3, wherein: one side fixedly connected with connecting plate (12) of extrusion piece (11), through-hole (13) have been fixed to have seted up in the middle part of connecting plate (12), the inside of through-hole (13) is rotated and is connected with dog (14), dog (14) are ring shape, the inside fixed cover of dog (14) is equipped with interior thread bush (15), the inside of interior thread bush (15) and the outer wall threaded connection of locating screw (5).

5. The double-flange limit expansion joint for the valve according to claim 3, wherein: the extrusion block (11) is in a boss shape, and the interior of the extrusion block (11) is mutually attached to the outer wall of the connecting sleeve (3).

6. The double-flange limit expansion joint for the valve according to claim 1, wherein: the outer wall of the valve pipe (1) is fixedly sleeved with two sealing rings, and the outer walls of the two sealing rings are respectively connected with the inner parts of the two connecting sleeves (3) in a sliding mode.