Sealing ring mounting device of rotary joint

Abstract

A sealing ring mounting device of a rotary joint comprises a quincunx positioning sleeve and a guide sleeve arranged at the center of the positioning sleeve, a limiting groove is machined in the outer wall face of the positioning sleeve along a quincunx track, a sunken part distributed in the axial direction is formed in the outer circumferential face of the positioning sleeve, an elastic pressing mechanism is mounted on the sunken part and comprises a twistable L-shaped pressing rod, and the L-shaped pressing rod is connected with the limiting groove. The short rod section of the L-shaped pressing rod is connected to the outer side of the limiting groove in a pressed mode, the long rod section of the L-shaped pressing rod extends into the guide sleeve, a push rod is arranged in the guide sleeve in a sliding mode, and an inner groove is machined in the position, corresponding to the L-shaped pressing rod, of the outer wall face of the push rod. The sealing ring is embedded into the limiting groove under extrusion of the L-shaped pressing rod, after the push rod is pushed, the L-shaped pressing rod twists and is disconnected from the sealing ring, and the sealing ring is clamped into the sealing groove of the connector outer shell through self elastic memory. According to the device, the sealing ring is positioned after being extruded and deformed through the twistable L-shaped pressing rod, the L-shaped pressing rod is pushed to twist by matching with the push rod to loosen the sealing ring, the installation is convenient, and the damage to the sealing ring is small.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sealing ring installation device of rotary joint. BACKGROUND

[0002] Rotary joint is a kind of closed rotary connector of 360 ° rotation conveying medium, can simultaneously convey gas, liquid, oil and a variety of medium, with the characteristics of stable and durable operation, strong and flexible, small friction coefficient.Rotary joint usually includes an outer shell and the rotary shaft arranged in the outer shell, realize the control and distribution of oil circuit or gas circuit in rotating mechanism, sealing ring needs to be installed between the outer shell and the rotary shaft, prevents internal liquid leakage, sealing ring is installed on the inner wall of outer shell, because the outer diameter of sealing ring is greater than the inner diameter of hydraulic pipe straight pipe, it is very inconvenient to install by clamp, calipers, the utility model discloses a kind of special tool for embedding sealing ring in hydraulic pipe straight pipe, including main body, the section of the main body is crescent and the main body is processed with trajectory groove on the section of the crescent, the main body left side is fixedly connected with a pedestal by bolt, the pedestal is processed with a guide hole in upper half, movable rod is matched and passes through the guide hole and extends into the upper half of the main body, sealing ring is embedded in the trajectory groove under the extrusion of the movable rod, the installation of sealing ring on the special tool is completed, then the special tool is inserted into hydraulic pipe straight pipe, when adjusting bolt contacts with hydraulic pipe straight pipe, movable rod is extracted, sealing ring restores deformation and is clamped on the installation groove of hydraulic pipe straight pipe, then the main body is extracted from hydraulic pipe straight pipe. UTILITY MODEL CONTENTS

[0003] In view of the deficiencies existing in the above problems, the utility model provides a sealing ring installation device of rotary joint.

[0004] To achieve the above object, the utility model provides a sealing ring installation device of rotary joint, including positioning sleeve, the guide sleeve at the center of the positioning sleeve, the positioning sleeve is connected and fixed through reinforcing rib, the positioning sleeve is meihua shape thin wall structure, the limit slot is processed on the outer wall surface of the positioning sleeve along meihua shape track, the recess portion that is distributed axially is formed on the outer circumferential surface of the positioning sleeve, the recess portion is evenly distributed along center symmetry, the elastic pressure mechanism is installed on the recess portion and corresponds with the limit slot, the elastic pressure mechanism includes the L type pressure rod that can be twisted, the short rod section of the L type pressure rod is pressed and connected on the outside of the limit slot, the long rod section of the L type pressure rod extends into the guide sleeve, the push rod is slidably arranged in the guide sleeve, the inner recess is processed on the push rod outer wall surface and the corresponding position of the L type pressure rod, the L type pressure rod end extends into the inner recess;

[0005] The sealing ring is embedded in the limiting groove under the extrusion of the L-shaped pressure rod, the positioning sleeve is put into the joint outer shell, the L-shaped pressure rod is twisted and disconnected with the sealing ring after the push rod is pushed, and the sealing ring is clamped in the sealing groove of the joint outer shell by relying on the elastic memory.

[0006] As a further improvement of the utility model, the elastic pressing mechanism comprises a positioning block, the positioning block is fixedly connected with the recess through bolts, one side of the positioning block towards the limiting groove is rotatably installed with the L-shaped pressure rod through a pin shaft, and a torsional spring is arranged between the positioning block and the L-shaped pressure rod.

[0007] As a further improvement of the utility model, the L-shaped pressure rod is an obtuse angle structure.

[0008] As a further improvement of the utility model, a guide groove is formed in the bottom of the recess, a guide groove I is formed in the sidewall of the guide sleeve, the long rod section passes through the guide groove and the guide groove I in sequence, and the sizes of the guide groove, the guide groove I and the inner recess are matched with the torsion track of the long rod section.

[0009] As a further improvement of the utility model, the left side of the inner recess is a thrust surface, and the thrust surface is arranged along the radial direction of the push rod.

[0010] As a further improvement of the utility model, a handle is installed on the left end of the push rod in the radial direction.

[0011] As a further improvement of the utility model, an end plate is installed on the left end of the positioning sleeve, and an adjusting bolt is installed on the position close to the circumference of the end plate for adjusting the position of the positioning sleeve inserted into the joint outer shell.

[0012] As a further improvement of the utility model, the number of the limiting grooves is matched with the number of the sealing grooves.

[0013] The utility model discloses a kind of sealing ring installation devices of rotary joint, which is characterized by the following:

[0014] The device positions sealing ring by extrusion deformation of L-shaped pressure rod, and releases sealing ring after L-shaped pressure rod is twisted by push rod, which is convenient to install, and there is no relative friction between L-shaped pressure rod and sealing ring, so that sealing ring is little damaged, and the sealing effect is not affected after deformation by the elastic memory of sealing ring. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the central section view of the sealing ring installation device of the utility model one rotary joint;

[0016] Figure 2 It is Figure 1 It is the section view of A-A direction.

[0017] Figure 3 For Figure 1 enlarged view at B in the middle;

[0018] Figure 4 For the structure diagram of elastic compression mechanism 6;

[0019] Figure 5 For the working schematic of the sealing ring mounting device of the rotary joint of the utility model Figure I ;

[0020] Figure 6 For the working schematic of the sealing ring mounting device of the rotary joint of the utility model Figure II .

[0021] In the figure: 1, positioning sleeve; 11, limit slot; 12, recess; 13, guide groove; 2, guide sleeve; 21, guide groove I; 3, reinforcing rib; 4, end plate; 41, adjusting bolt; 5, push rod; 51, inner groove; 511, thrust surface; 52, handle; 6, elastic compression mechanism; 61, L-shaped compression rod; 611, short rod section; 612, long rod section; 62, pin shaft; 63, torsional spring; 64, positioning block; 7, sealing ring; 8, joint outer shell; 81, sealing groove. DETAILED DESCRIPTION

[0022] As Figure 1As shown, the sealing ring mounting device of the rotary joint comprises a positioning sleeve 1, a guide sleeve 2 arranged at the center of the positioning sleeve 1, the positioning sleeve 1 is connected and fixed through a reinforcing rib 3, an end plate 4 is mounted at the left end of the positioning sleeve 1, an adjusting bolt 41 is mounted on the end plate 4 close to the circumference for adjusting the position of the positioning sleeve 1 extending into a joint outer shell 8, the positioning sleeve 1 is in a plum blossom shape thin wall structure, the maximum outer diameter of the positioning sleeve 1 is smaller than the inner diameter of the joint outer shell 8, a limiting groove 11 is processed on the outer wall surface of the positioning sleeve 1 along the plum blossom shape track, the number of the limiting groove 11 is matched with the sealing groove 81, the outer circumferential surface of the positioning sleeve 1 is formed with axially distributed recesses 12, the recesses 12 are uniformly distributed along the center symmetry, an elastic pressing mechanism 6 is mounted on the recesses 12 corresponding to the limiting groove 11, the elastic pressing mechanism 6 comprises a twistable L-shaped pressing rod 61, the L-shaped pressing rod 61 is in an obtuse angle structure, the short rod section 611 of the L-shaped pressing rod 61 is pressed outside the limiting groove 11, the long rod section 612 of the L-shaped pressing rod 61 extends into the guide sleeve 2, a push rod 5 is slidably arranged in the guide sleeve 2, a handle 52 is radially mounted at the left end of the push rod 5, an inner recess 51 is processed on the outer wall surface of the push rod 5 corresponding to the position of the L-shaped pressing rod 61, the end of the L-shaped pressing rod 61 extends into the inner recess 51, a guide groove 13 is processed at the bottom of the recess 12, a guide groove I 21 is processed on the side wall of the guide sleeve 2, the long rod section 612 passes through the guide groove 13 and the guide groove I 21 in sequence, the sizes of the guide groove 13, the guide groove I 21 and the inner recess 51 are matched with the twist trajectory of the long rod section 612, the left side of the inner recess 51 is a thrust surface 511, and the thrust surface 511 is arranged along the radial direction of the push rod 5.

[0023] The elastic pressing mechanism 6 comprises a positioning block 64, the positioning block 64 is fixedly connected with the recess 12 through a bolt, one side of the positioning block 64 facing the limiting groove 11 is rotationally installed with the L-shaped pressing rod 61 through a pin shaft 62, and a torsional spring 63 is arranged between the positioning block 64 and the L-shaped pressing rod 61.

[0024] The sealing ring 7 is embedded into the limiting groove 11 under the extrusion of the L-shaped pressing rod 61, the positioning sleeve 1 is placed into the joint outer shell 8, the L-shaped pressing rod 61 is twisted and disconnected with the sealing ring 7 after the push rod 5 is pushed, and the sealing ring 7 is clamped into the sealing groove 81 of the joint outer shell 8 by relying on the elastic memory of itself.

[0025] The device positions the sealing ring after extrusion deformation through the twistable L-shaped pressing rod, releases the sealing ring after the L-shaped pressing rod is twisted by the push rod, is convenient to install, adopts a press connection structure between the L-shaped pressing rod and the sealing ring, there is no relative friction, the damage to the sealing ring is small, the sealing ring after extrusion deformation restores deformation by the elastic memory of itself, and the sealing effect is not affected.

[0026] In specific use, the utility model is described in combination with the drawings for the convenience of understanding the utility model;

[0027] When the push rod is assembled, the push rod is directly inserted into the guide sleeve from left to right, the L-shaped pressing rod is twisted around the pin shaft under the pushing of the push rod, the end of the long rod section abuts against the outer wall of the push rod, until the end of the long rod section of the L-shaped pressing rod is matched with the inner recess extending outside the push rod; when the sealing ring is positioned, the sealing ring is sleeved on the positioning sleeve, the short rod section of the L-shaped pressing rod is pulled up in sequence, and the sealing ring is embedded into the plum blossom-shaped limiting groove under the extrusion of the short rod section; the positioning sleeve with the sealing ring is integrally inserted into the joint outer shell body, the insertion length of the positioning sleeve is adjusted through the adjusting bolt, the position of the limiting groove on the positioning sleeve is corresponded with the position of the sealing groove in the joint outer shell body; finally, the handle is held, the push rod is pushed to move right along the guide sleeve, the thrust surface of the inner recess abuts against the end of the long rod section and moves right, the L-shaped pressing rod is correspondingly twisted clockwise around the pin shaft and then is disconnected with the sealing ring, and the sealing ring is clamped into the sealing groove of the joint outer shell body by relying on the elastic memory; the handle is released, the L-shaped pressing rod is reset by the elastic memory of the torsional spring, and the push rod is reset synchronously under the driving of the L-shaped pressing rod; finally, the positioning sleeve can be taken out.

[0028] The preferred embodiments of the utility model are described above only, and are not used for limiting the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A seal ring installation device for a rotary joint, characterized by: The utility model provides a positioning sleeve (1), the guide sleeve (2) of being located at the center of positioning sleeve (1), positioning sleeve (1) is connected and fixed through reinforcing rib (3), positioning sleeve (1) is in plum blossom thin wall structure, the outer wall surface of positioning sleeve (1) is processed limit slot (11) along plum blossom track, the outer circumferential surface of positioning sleeve (1) forms the recess (12) of axial distribution, recess (12) is evenly distributed along the center symmetry, recess (12) is installed elastic pressure mechanism (6) with limit slot (11) corresponding, elastic pressure mechanism (6) includes the L type pressure lever (61) of being able to twist, the short rod section (611) of L type pressure lever (61) is pressed in limit slot (11) outside, the long rod section (612) of L type pressure lever (61) is inserted into guide sleeve (2), the outer wall surface of push rod (5) is slidably arranged in guide sleeve (2) and is processed inner recess (51) with L type pressure lever (61) corresponding position, Sealing ring (7) is embedded in limit slot (11) under the extrusion of L type pressure lever (61), positioning sleeve (1) is placed into joint outer shell (8), after pushing push rod (5), L type pressure lever (61) produces twist and is disconnected with sealing ring (7), sealing ring (7) is embedded in the sealing groove (81) of joint outer shell (8) by relying on the elastic memory of itself.

2. A seal ring installation device for a rotary joint according to claim 1, characterized in that: Elastic pressure mechanism (6) includes positioning block (64), positioning block (64) is fixedly connected with recess (12) through bolt, one side of positioning block (64) towards limit slot (11) is rotatably installed L type pressure lever (61) through pin shaft (62), torsion spring (63) is arranged between positioning block (64) and L type pressure lever (61).

3. A seal ring installation device for a rotary joint according to claim 1, characterized in that: L type pressure lever (61) is obtuse angle structure.

4. A seal ring installation device for a rotary joint according to claim 1, characterized in that: The bottom of recess (12) is processed guide groove (13), the sidewall of guide sleeve (2) is processed guide groove I (21), long rod section (612) passes guide groove (13) and guide groove I (21) in turn, the size of guide groove (13), guide groove I (21) and inner recess (51) matches the twist trajectory of long rod section (612).

5. A seal ring installation device for a rotary joint according to claim 1, characterized in that: The left side of inner recess (51) is thrust face (511), and the thrust face (511) is arranged along the radial direction of the push rod (5).

6. A seal ring installation device for a rotary joint according to claim 1, characterized in that: The left end of the push rod (5) is radially installed with a handle (52).

7. A seal ring installation device for a rotary joint as defined in claim 1, characterized in that: The left end of the positioning sleeve (1) is installed with an end plate (4), and the adjusting bolt (41) is installed near the circumference of the end plate (4) for adjusting the position of the positioning sleeve (1) inserted into the joint outer shell (8).

8. A seal ring installation device for a rotary joint as defined in claim 1, characterized in that: The number of limit slots (11) matches the number of sealing grooves (81).

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