Quick connector for core rod oil pipe

Abstract

The utility model discloses a quick connector of a core rod oil pipe. The quick connector comprises a first connecting pipe and a second connecting pipe, a first annular boss is arranged on the front end face of the first connecting pipe, an adjusting mechanism is arranged in the first connecting pipe and comprises a guide rod, an adjusting rod, a nut seat, a connecting rod and a supporting block, the adjusting rod is arranged in the first connecting pipe in the radial direction, and the two ends of the adjusting rod 32 extend towards the two sides and penetrate through the outer wall of the first connecting pipe to extend to the outside. The two extending ends of the adjusting rod are rotationally connected with a shaft seat arranged on the side wall of the first connecting pipe, two sections of external threads with opposite thread screwing directions are arranged on the side wall of the adjusting rod, two nut seats are symmetrically arranged on the two sections of external threads, and a guide rod is coaxially arranged in the second connecting pipe; the two nut seats are hinged to the rear ends of the guide rods through the two connecting rods respectively. The mandrel vibration device and the mandrel oil pipe can be rapidly connected and detached, time and labor are saved, the flow of the connector can be rapidly adjusted, and the sealing performance of the connector is good.

Description

Technical Field

[0001] The utility model relates to the technical field of core mold vibration equipment and core rod oil pipe connection equipment, in particular to a quick connection joint of a core rod oil pipe. Background Art

[0002] During the disassembly process of the core mold vibration equipment and the core rod oil pipe, it is necessary to use a wrench to tighten the nut head. Generally, the oil pipe joints mostly use tapered pipe threads, or tapered surfaces plus threaded connections. There are also connecting pipe sleeves with internal threads on both ends to connect the oil pipes. The ports of such oil pipe joints are easily damaged and the sealing effect is poor. When the oil pipes are separated, the residual oil in the oil pipes will leak to the outside, which will waste oil and pollute the environment. On the other hand, the threaded connection between the oil pipe joints is relatively tight and usually requires the help of tools to rotate, making disassembly and assembly time-consuming and labor-intensive. Utility Model Content

[0003] The utility model provides a quick connection joint for a mandrel oil pipe, which solves the problems of a traditional mandrel oil pipe connection joint being easy to wear, time-consuming and labor-intensive to connect, poor sealing effect, and easy leakage of residual oil when disassembled.

[0004] The utility model provides a quick connection joint of a core rod oil pipe, comprising a first connecting tube and a second connecting tube; a first annular boss is arranged on the front end surface of the first connecting tube, an adjusting mechanism is arranged inside the first connecting tube, the adjusting mechanism comprises a guide rod, an adjusting rod, a nut seat, a connecting rod, and a supporting block, the adjusting rod is radially arranged inside the first connecting tube, two ends of the adjusting rod extend to both sides respectively and pass through the outer wall of the first connecting tube to extend to the outside respectively, the two protruding ends of the adjusting rod are rotatably connected with the shaft seat arranged on the side wall of the first connecting tube, two sections of external threads with opposite thread rotation directions are arranged on the side wall of the adjusting rod, two nut seats are symmetrically arranged on the two sections of external threads, a guide rod is coaxially arranged inside the second connecting tube, the two nut seats are respectively hingedly connected to the rear end of the guide rod through two connecting rods, the supporting block is coaxially arranged inside the first connecting tube, an axial through hole is arranged at the center of the supporting block along the axial direction, and an inner sleeve of the guide rod Guided in the axial through hole; a first annular groove is arranged on the front end face of the second connecting tube, and a limit block, a limit ball, a limit spring and a positioning block are arranged in sequence from front to back inside the second connecting tube; the limit block is coaxially arranged in the second connecting tube, a guide hole is arranged at the center of the limit block along the axial direction, a conical hole is arranged at the rear end of the guide hole, the limit ball is partially arranged in the conical hole, a center through hole is arranged at the center of the positioning block along the axial direction, a second annular boss is arranged on the front end face of the positioning block, one end of the limit spring is sleeved on the second annular boss, and the other end is elastically connected to the limit ball and presses the limit ball into the conical hole; the first connecting tube is inserted into the first annular groove through the first annular boss and is connected to the second connecting tube through a socket structure, and an internal thread is arranged at the rear end of the first connecting tube; an external thread is arranged on the outer wall of the rear end of the second connecting tube and a lock nut is sleeved, and a fixing nut is arranged on the outer wall of the second connecting tube.

[0005] Furthermore, a positioning head is arranged at the front end of the guide rod, and the positioning head is in a trumpet shape.

[0006] Furthermore, threads are arranged on the outer walls of the butt ends of the first connecting pipe and the second connecting pipe and the butt ends are connected by sleeve-mounting a locking screw sleeve.

[0007] Furthermore, a first sleeve is arranged inside the front end of the first connecting tube, a first flange integrally connected thereto is arranged at the rear end of the first sleeve, the first sleeve is coaxially nested in the first connecting tube through the first flange, a second sleeve is coaxially arranged inside the second connecting tube, a second flange integrally connected thereto is arranged at the rear end of the second sleeve, the second sleeve is coaxially nested in the second connecting tube through the second flange, and the first sleeve is fixed outside the second sleeve.

[0008] Furthermore, a plurality of radial blind holes are arranged on the outer wall of the second sleeve, a compression spring is arranged in each radial blind hole, one end of the compression spring is elastically fixedly connected to the bottom of the blind hole, and the other end is elastically fixedly connected to the positioning ball, and a hemispherical hole matching the positioning ball is arranged on the inner wall of the first sleeve.

[0009] Furthermore, a second annular groove is arranged on the end surface of the first sleeve, and a sealing ring is arranged in the second annular groove.

[0010] It can be seen from the above technical solutions that the utility model provides a quick connection joint for a mandrel oil pipe.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model drives the guide rod to be inserted into the second connecting pipe to press the limiting ball through the adjusting rod adjusting nut seat, so that the gap between the limiting ball and the tapered hole changes, and the flow rate in the joint can be quickly adjusted. The first connecting pipe and the second connecting pipe are matched with each other through the first annular boss inserted into the first annular groove, and the joint of the first connecting pipe and the second connecting pipe is locked by the locking screw sleeve, so that the joint can be quickly connected. The compression spring will bounce the positioning ball into the hemispherical hole and lock it when there is no external force. The first sleeve and the second sleeve will not be relatively displaced and connected. On the one hand, the second sealing of the internal joint of the first connecting pipe and the second connecting pipe is realized, and on the other hand, the secondary self-locking connection can be realized to prevent the joint from falling off due to loose connection. When removing the joint, the adjusting rod is first pre-adjusted to stop the oil in the joint from flowing, and then the locking screw sleeve is completely screwed onto the second connecting pipe, so that the first connecting pipe and the second connecting pipe can be separated, so as to realize the rapid separation of the joint, and the removal speed of the mandrel oil pipe is fast, time and labor are saved, and the joint has good sealing performance. In addition, less residual effluent is left during the disassembly of the joint, and large-scale leakage and pollution of the environment will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the utility model, the following is a brief introduction to the drawings required for use in the implementation cases. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0014] Figure 1 This is a schematic cross-sectional view of the overall structure of a quick-connect joint for a mandrel oil pipe proposed by the utility model;

[0015] Figure 2 It is a partial structural schematic diagram of a quick connection joint of a mandrel oil pipe proposed by the utility model;

[0016] Figure 3 For the utility model Figure 1 A schematic diagram of the local enlarged structure at position Ⅰ;

[0017] Figure 4 The utility model is a schematic diagram of the connection structure between the positioning head and the guide rod of a quick connection joint of a mandrel oil pipe.

[0018] In the figure:

[0019] 1-first connecting pipe; 11-first annular boss; 12-shaft seat; 13-O-type rubber sealing ring; 101-internal thread; 102-external thread; 103-lock nut;

[0020] 2-second connecting pipe; 20-first annular groove; 21-limiting block; 22-limiting ball; 23-limiting spring; 24-positioning block; 25-fixing nut; 211-guide hole; 212-conical hole; 241-center through hole; 242-second annular boss;

[0021] 3-adjusting mechanism; 31-guide rod; 32-adjusting rod; 33-nut seat; 34-connecting rod; 35-support block; 311-positioning head; 321-external thread;

[0022] 4-locking screw sleeve;

[0023] 5-first sleeve; 51-first flange; 52-hemispherical hole; 53-second annular groove; 54-sealing ring;

[0024] 6-second sleeve; 61-second flange; 62-radial blind hole; 63-compression spring; 64-positioning ball. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0026] Embodiment 1:

[0027] See also Figure 1-4A quick-connect joint for a mandrel oil pipe comprises a first connecting pipe 1 and a second connecting pipe 2; a first annular boss 11 is arranged on the front end surface of the first connecting pipe 1, and an adjusting mechanism 3 is arranged inside the first connecting pipe 1; the adjusting mechanism 3 comprises a guide rod 31, an adjusting rod 32, a nut seat 33, a connecting rod 34, and a supporting block 35; the adjusting rod 32 is arranged radially inside the first connecting pipe 1, and both ends of the adjusting rod 32 extend to both sides respectively and pass through radial through holes arranged on the outer wall of the first connecting pipe 1 to extend to the outside; a radial through hole is arranged inside the outer end thereof An O-type rubber seal ring 13 is arranged, and the O-type rubber seal ring 13 is sleeved on the adjusting rod 32 to prevent the oil leakage inside the first connecting pipe 1. The two extended ends of the adjusting rod 32 are rotatably connected with the shaft seat 12 arranged on the side wall of the first connecting pipe 1. The side wall of the adjusting rod 32 is provided with two sections of external threads 321 with opposite thread rotation directions, and two nut seats 33 are symmetrically arranged on the two sections of external threads 321. A guide rod 31 is coaxially arranged in the second connecting pipe 2, and the two nut seats 33 are respectively hingedly connected to the rear end of the guide rod 31 through two connecting rods 34. The support block 35 is coaxially arranged in the first connecting tube 1, and an axial through hole is arranged at the center of the support block 35 along the axial direction, and the guide rod 31 is sleeved in the axial through hole for guiding cooperation; a first annular groove 20 is arranged on the front end surface of the second connecting tube 2, and a limit block 21, a limit ball 22, a limit spring 23, and a positioning block 24 are arranged in sequence from front to back inside the second connecting tube 2; the limit block 21 is coaxially arranged in the second connecting tube 2, and a guide hole 211 is arranged at the center of the limit block 21 along the axial direction, and a tapered hole 212 is arranged at the rear end of the guide hole 211, and the limit The positioning ball 22 is partially arranged in the tapered hole 212, a central through hole 241 is arranged at the center of the positioning block 24 along the axial direction, a second annular boss 242 is arranged on the front end surface of the positioning block 24, one end of the limiting spring 23 is sleeved on the second annular boss 242, and the other end is elastically connected to the limiting ball 22 and presses the limiting ball 22 into the tapered hole 212; the first connecting pipe 1 is inserted into the first annular groove 20 through the first annular boss 11 and is connected to the second connecting pipe 2 through a socket structure, and the rear end of the first connecting pipe 1 is provided with an internal thread 101;The rear end outer wall of the second connecting pipe 2 is provided with an external thread 201 and a lock nut 202. A fixing nut 203 is provided on the outer wall of the second connecting pipe 2. The nut seat 33 is adjusted by the adjusting rod 32 to drive the guide rod 31 to be inserted into the second connecting pipe 2 to press the limiting ball 22, so that the gap between the limiting ball 22 and the tapered hole 212 changes, and the flow rate in the joint can be quickly adjusted. The first annular boss 11 is inserted into the first annular groove 20 to make the first connecting pipe 1 and the second connecting pipe 2 socket-fitted, and the joint between the first connecting pipe 1 and the second connecting pipe 2 is locked by the locking screw sleeve 4, so that the joint can be quickly connected. , the compression spring 63 bounces the positioning ball 64 into the hemispherical hole 52 and locks it when there is no external force. The first sleeve 5 and the second sleeve 6 will not be relatively displaced and connected. On the one hand, the secondary sealing of the internal seam of the first connecting tube 1 and the second connecting tube 2 is realized, and on the other hand, the secondary self-locking connection can be realized to prevent the joint from falling off due to loose connection. When removing the joint, the locking screw sleeve 4 is completely screwed onto the second connecting tube 2, and then the first connecting tube 1 is pulled hard relative to the second connecting tube 2, so that the first connecting tube 1 and the second connecting tube 2 can be separated, and the joint can be quickly separated. The mandrel oil pipe is quickly removed, saving time and effort. ;

[0028] In this embodiment, a positioning head 311 is disposed at the front end of the guide rod 31 . The positioning head 311 is in a bell-mouth shape. The positioning head 311 abuts against the limiting ball 22 to prevent the limiting ball 22 from lateral movement.

[0029] In this embodiment, threads are provided on the outer walls of the butt ends of the first connecting tube 1 and the second connecting tube 2 and are connected by means of a locking screw sleeve 4. The locking screw sleeve 4 is used to threadably connect the first connecting tube 1 and the second connecting tube 2 along the axis. The locking screw sleeve 4 is screwed onto the first connecting tube 1 or the second connecting tube 2 to separate the first connecting tube 1 from the second connecting tube 2.

[0030] In this embodiment, a first sleeve 5 is arranged inside the front end of the first connecting tube 1, and a first flange 51 integrally connected thereto is arranged at the rear end of the first sleeve 5. The first sleeve 5 is coaxially nested in the first connecting tube 1 through the first flange 51. A second sleeve 6 is coaxially arranged inside the second connecting tube 2, and a second flange 61 integrally connected thereto is arranged at the rear end of the second sleeve 6. The second sleeve 6 is coaxially nested in the second connecting tube 2 through the second flange 61. The first sleeve 5 is fixedly sleeved on the second sleeve 6.

[0031] In this embodiment, a plurality of radial blind holes 62 are arranged on the outer wall of the second sleeve 6, and a compression spring 63 is arranged in each radial blind hole 62. One end of the compression spring 63 is elastically fixedly connected to the bottom of the blind hole 62, and the other end is elastically fixedly connected to the positioning ball 64. A hemispherical hole 52 matching the positioning ball 64 is arranged on the inner wall of the first sleeve 5. The positioning ball 64 is ejected into the radial blind hole 62 by the compression spring 63, so that the first sleeve 5 and the second sleeve 6 can be locked in the circumferential direction. When subjected to a large axial force, the first sleeve 5 can press the positioning ball 64 into the radial blind hole 62, and the first sleeve 5 can move relative to the second sleeve 6.

[0032] In this embodiment, a second annular groove 53 is provided on the end face of the first sleeve 5, a sealing ring 54 is provided in the second annular groove 53, the first sleeve 5 is sleeved on the second sleeve 6, and the first sleeve 5 is abutted against the second flange 61 through the sealing ring 54 in the second annular groove 53 to form a sealing structure to prevent oil leakage from the joint between the first sleeve 5 and the second sleeve 6.

[0033] In this embodiment, the support block 35 and the first flange 51 are positioned and fixed by the top screws in the top screw holes radially arranged on the side wall of the first connecting tube 1, and the limit block 21, the positioning block 24, and the second flange 61 are positioned and fixed by the top screws radially arranged on the side wall of the second connecting tube 2. At the same time, the gaps between the support block 35, the first flange 51 and the side wall of the first connecting tube 1 and between the limit block 21, the positioning block 24, the second flange 61 and the inner wall of the second connecting tube 2 can be brushed with sealant to prevent leakage.

[0034] In this embodiment, a plurality of through holes are provided on the side surface of the support block 35 along the circumferential direction, so that the oil can pass through the support block 35 .

[0035] It can be seen from the above technical scheme that when in use, the internal thread 101 set at the rear end of the first connecting pipe 1 is connected to the external thread end of the oil pipe, and the external thread 201 set on the outer wall of the rear end of the second connecting pipe 2 is connected to the internal thread interface of the core mold vibration equipment. The main fixing nut 203 is clamped with a wrench, and the lock nut 202 is tightened to make the second connecting pipe 2 tightly connected to the interface of the core mold vibration equipment. Then, the first connecting pipe 1 is inserted into the first annular groove 20 through the first annular boss 11 and quickly connected with the second connecting pipe 2 through the socket structure. At the same time, the locking screw sleeve 4 is turned to lock the butt end of the first connecting pipe 1 and the second connecting pipe 2. During the butt connection between the first connecting pipe 1 and the second connecting pipe 2, the first sleeve 5 is sleeved on the second sleeve 6 to squeeze the positioning ball 64, so that the compression spring 63 is in a compressed state, and until the positioning ball 64 is aligned with the hemispherical hole 52, the compression spring 63 bounces the positioning ball 64 into the hemispherical hole When there is no external force in the conical hole 52, the first sleeve 5 and the second sleeve 6 will not move relative to each other. At the same time, the guide rod 31 is inserted into the second connecting tube 2 and extends into one side of the limiting ball 22. The positioning head 311 at the end of the guide rod 31 presses the limiting ball 22. By rotating the adjusting rod 32 clockwise, the two nut seats 33 on the adjusting rod 32 move toward the middle. During the movement of the two connecting rods 34 in the axial direction, the guide rod 31 continues to move into the second connecting tube 2, pressing the limiting ball 22 to compress the limiting spring 23. At the same time, the gap between the limiting ball 22 and the conical hole 212 increases, which can increase the oil flow through the second connecting tube 2. Conversely, the oil flow through the second connecting tube 2 can be adjusted to reduce. When removing the joint, all the locking screw sleeves 4 are screwed onto the second connecting tube 2, and then the first connecting tube 1 is pulled forcefully relative to the second connecting tube 2 to separate the first connecting tube 1 from the second connecting tube 2, thereby realizing the rapid separation of the joint.

[0036] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the utility model disclosed herein. The present invention is intended to cover any variation, use or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only, and the true scope of the present invention is indicated by the claims.

[0037] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention.

Claims

1. A quick-connect joint for a mandrel oil pipe, characterized in that: The invention comprises a first connecting tube (1) and a second connecting tube (2); a first annular boss (11) is arranged on the front end surface of the first connecting tube (1); an adjusting mechanism (3) is arranged inside the first connecting tube (1); the adjusting mechanism (3) comprises a guide rod (31), an adjusting rod (32), a nut seat (33), a connecting rod (34), and a supporting block (35); the adjusting rod (32) is arranged radially inside the first connecting tube (1); two ends of the adjusting rod (32) extend to two sides respectively and pass through the outer wall of the first connecting tube (1) to extend to the outside; the two outwardly extending ends of the adjusting rod (32) are connected to the first connecting tube (1) ) is rotatably connected to the shaft seat (12) arranged on the side wall of the adjusting rod (32), two sections of external threads (321) are arranged on the side wall of the adjusting rod (32), two nut seats (33) are arranged on the two sections of external threads (321), a guide rod (31) is coaxially arranged in the second connecting tube (2), the two nut seats (33) are respectively hingedly connected to the rear end of the guide rod (31) through two connecting rods (34), the support block (35) is coaxially arranged in the first connecting tube (1), an axial through hole is arranged at the center of the support block (35), the guide rod (31) is sleeved in the axial through hole, and the front end surface of the second connecting tube (2) is provided with a first an annular groove (20); a limit block (21), a limit ball (22), a limit spring (23), and a positioning block (24) are sequentially arranged inside the second connecting tube (2) from front to back; the limit block (21) is coaxially arranged inside the second connecting tube (2); a guide hole (211) is arranged at the center of the limit block (21); a conical hole (212) is arranged at the rear end of the guide hole (211); a portion of the limit ball (22) is arranged in the conical hole (212); a center through hole (241) is arranged at the center of the positioning block (24); a second annular boss (242) is arranged on the front end surface of the positioning block (24); One end of the limit spring (23) is sleeved on the second annular boss (242), and the other end is elastically connected to the limit ball (22) and presses the limit ball (22) into the tapered hole (212); the first connecting pipe (1) is inserted into the first annular groove (20) through the first annular boss (11) and is connected to the second connecting pipe (2) through a socket structure, and the rear end of the first connecting pipe (1) is provided with an internal thread (101); the rear end outer wall of the second connecting pipe (2) is provided with an external thread (201) and sleeved with a lock nut (202), and a fixing nut (203) is provided on the outer wall of the second connecting pipe (2).

2. A quick-connect joint for a mandrel oil pipe according to claim 1, characterized in that: A positioning head (311) is provided at the front end of the guide rod (31).

3. A quick-connect joint for a mandrel oil pipe according to claim 1, characterized in that: The outer walls of the butt ends of the first connecting pipe (1) and the second connecting pipe (2) are both provided with threads and are connected via a locking screw sleeve (4).

4. A quick-connect joint for a mandrel oil pipe according to claim 1, characterized in that: A first sleeve (5) is arranged inside the front end of the first connecting pipe (1), a first flange (51) is arranged at the rear end of the first sleeve (5), the first sleeve (5) is nested in the first connecting pipe (1) through the first flange (51), a second sleeve (6) is coaxially arranged inside the second connecting pipe (2), a second flange (61) is arranged at the rear end of the second sleeve (6), the second sleeve (6) is nested in the second connecting pipe (2) through the second flange (61), and the first sleeve (5) is sleeved on the second sleeve (6).

5. The quick-connect joint for mandrel oil pipe according to claim 1, characterized in that: A plurality of radial blind holes (62) are arranged on the outer wall of the second sleeve (6), a compression spring (63) is arranged in each radial blind hole (62), one end of the compression spring (63) is elastically fixedly connected to the bottom of the blind hole (62), and the other end is elastically fixedly connected to the positioning ball (64), and a hemispherical hole (52) matching the positioning ball (64) is arranged on the inner wall of the first sleeve (5).

6. A quick-connect joint for a mandrel oil pipe according to claim 4, characterized in that: A second annular groove (53) is provided on the end surface of the first sleeve (5), and a sealing ring (54) is provided in the second annular groove (53).

Images