Pipe joint with end face tooth-shaped structure

Abstract

The utility model relates to a pipe joint with an end face tooth-shaped structure. The pipe joint comprises a cylindrical annular joint body, a plurality of annular clamping grooves are formed in the outer wall of the joint body, an annular connecting disc is inserted into the clamping grooves in the upper side of the joint body, a cylindrical internal thread locking sleeve is fixedly connected to the connecting disc, and the internal thread locking sleeve is inserted into the joint body in a sleeved mode. The connecting disc is composed of a left semicircular clamping plate and a right semicircular clamping plate, the connecting disc is inserted into the internal thread locking sleeve, a horizontal check ring is formed at the upper end of the internal thread locking sleeve, a plurality of vertical positioning pins are fixedly inserted into the left clamping plate and the right clamping plate respectively, the upper ends of the positioning pins are inserted into the check ring of the internal thread locking sleeve, and the lower ends of the positioning pins are inserted into the check ring of the internal thread locking sleeve. A vertical bolt is inserted into a check ring of the internal thread locking sleeve, and the lower end of the bolt is connected to the left clamping plate and the right clamping plate in a screwed mode. The internal thread locking sleeve is pivoted on the pipe joint, and the pipe joint can be screwed and fixed on a valve seat of a water pump valve based on the internal thread locking sleeve, so that the installation and the connection are convenient, and the axial movement of the pipe joint can be effectively limited.

Description

Technical field:

[0001] The utility model relates to the technical field of valve joints, and more specifically to a pipe joint with an end face toothed structure. Background technology:

[0002] At present, pipe joints are needed when connecting valves and pipelines. Among them, a joint with a tooth-shaped protrusion on the end face is used on the valve of the water pump, such as Figure 1 As shown, the outer wall of the joint 1 is formed with a plurality of annular grooves 12, the upper part of the water pump valve is provided with a cylindrical annular valve seat 7, the joint 1 is inserted into the valve seat 7 for connection, and the valve seat 7 is provided with a limiting tooth groove 72, the limiting tooth block 11 on the joint 1 is inserted into the limiting tooth groove 72 to limit the radial rotation of the joint 1, in order to realize the axial movement of the joint 1, generally, two opposite outer walls on the upper part of the valve seat 7 are plugged with L-shaped plug-in plates 8, the plug-in plates 8 are composed of a horizontal plate and a vertical plate, and the horizontal plate 8 of the plug-in plate 8 is connected to the valve seat 7. The plate passes through the slot 12 of the connector 1, and screws 9 are inserted into the vertical plate, and the plug-in plate 8 is fixed to the valve seat 7 by the screws 9; in order to prevent the connector 1 from axial movement, the slot width of the slot 12 is required to be consistent with the thickness of the horizontal plate on the plug-in plate 8, but in the actual assembly process, because the slot 12 of the connecting part of the plug-in plate 8 is set in the valve seat 7, and because their sizes are consistent, it is inconvenient to insert the plug-in plate 8 into the slot 12; therefore, a structure that is convenient for installation and connection and can effectively limit the axial movement of the connector 1 is needed. Utility model content:

[0003] The purpose of the utility model is to address the deficiencies of the prior art and to provide a pipe joint with an end face toothed structure, wherein an internal thread locking sleeve is pivotally connected to the pipe joint, and the internal thread locking sleeve can be threadedly fixed on the valve seat of a water pump valve, which is convenient for installation and connection and can effectively limit the axial movement of the pipe joint.

[0004] A pipe joint with an end face tooth structure, comprising a cylindrical ring-shaped joint, a plurality of limit tooth blocks are formed on the lower end face of the joint, a plurality of annular clamping grooves are formed on the outer wall of the joint, a circular connecting disk is inserted into the clamping groove on the upper side of the joint, a cylindrical internal thread locking sleeve is fixedly connected to the connecting disk, and the internal thread locking sleeve is inserted into the joint;

[0005] The connecting plate is composed of two semicircular left and right clamping plates. The connecting plate is inserted into the internal thread locking sleeve. A horizontal retaining ring is formed on the upper end of the internal thread locking sleeve. A number of vertical positioning pins are respectively inserted and fixed on the left and right clamping plates. The upper ends of the positioning pins are inserted on the retaining ring of the internal thread locking sleeve. The retaining ring of the internal thread locking sleeve is inserted with vertical bolts. The lower ends of the bolts are respectively screwed on the left and right clamping plates.

[0006] Preferably, the diameter of the inner wall of the internal thread locking sleeve is greater than the diameter of the outer wall of the joint, and a regular hexagonal limiting convex ring is formed on the outer wall of the internal thread locking sleeve.

[0007] Preferably, a sealing ring is inserted into the slot of the connector at the lower side of the connecting disk.

[0008] Preferably, a cylindrical valve seat is provided below the joint, an annular groove is formed on the inner wall of the upper end of the valve seat, a plurality of limiting tooth grooves are formed on the lower end surface of the annular groove, and an external thread is formed on the outer wall of the upper end of the valve seat;

[0009] The connector is inserted into the valve seat, the limiting tooth blocks at the lower end of the connector are respectively inserted into the limiting tooth grooves of the valve seat, and the sealing ring on the connector is pressed against the inner wall of the annular groove; the internal thread locking sleeve is threaded onto the valve seat.

[0010] Preferably, the diameter of the inner wall of the annular groove on the valve seat is larger than the diameter of the outer wall of the joint.

[0011] Preferably, the distance from the lower end surface of the connecting plate to the lower end surface of the limiting tooth block is greater than the distance from the lower end surface of the annular groove on the valve seat to the upper end surface of the valve seat.

[0012] Preferably, the diameter of the inner wall of the connecting disk is equal to the diameter of the inner bottom surface of the slot on the connector.

[0013] The beneficial effects of the utility model are:

[0014] The pipe joint is pivotally connected with an internal thread locking sleeve, which can be threadedly fixed on the valve seat of the water pump valve, is easy to install and connect, and can effectively limit the axial movement of the pipe joint. Description of the drawings:

[0015] Figure 1 It is a cross-sectional schematic diagram of the connection between the existing pipe joint and the valve seat;

[0016] Figure 2 It is a cross-sectional schematic diagram of the connection between the pipe joint and the valve seat of the utility model;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the utility model from another angle;

[0019] Figure 5 It is a schematic diagram of the structure of the utility model when viewed from above.

[0020] In the figure: 1. connector; 11. limit tooth block; 12. slot; 2. connecting plate; 21. left clamping plate; 22. right clamping plate; 3. internal thread locking sleeve; 4. positioning pin; 5. bolt; 6. sealing ring; 7. valve seat; 71. annular groove; 72. limit tooth groove; 8. plug-in plate; 9. screw. Specific implementation method:

[0021] Example: See Figures 2 to 5 As shown, a pipe joint with an end face tooth structure comprises a cylindrical ring-shaped joint 1, a plurality of limit tooth blocks 11 are formed on the lower end face of the joint 1, a plurality of annular clamping grooves 12 are formed on the outer wall of the joint 1, a circular ring-shaped connecting plate 2 is inserted into the clamping groove 12 on the upper side of the joint 1, a cylindrical internal thread locking sleeve 3 is fixedly connected to the connecting plate 2, and the internal thread locking sleeve 3 is inserted into the joint 1;

[0022] The connecting plate 2 is composed of two semicircular left clamping plates 21 and right clamping plates 22. The connecting plate 2 is inserted into the internal thread locking sleeve 3. A horizontal retaining ring is formed on the upper end of the internal thread locking sleeve 3. A plurality of vertical positioning pins 4 are respectively inserted and fixed on the left clamping plate 21 and the right clamping plate 22. The upper ends of the positioning pins 4 are inserted on the retaining ring of the internal thread locking sleeve 3. A vertical bolt 5 is inserted on the retaining ring of the internal thread locking sleeve 3. The lower ends of the bolts 5 are respectively screwed on the left clamping plate 21 and the right clamping plate 22.

[0023] The diameter of the inner wall of the internal thread locking sleeve 3 is larger than the diameter of the outer wall of the joint 1. A regular hexagonal limiting convex ring is formed on the outer wall of the internal thread locking sleeve 3. The limiting convex ring can be used to screw the internal thread locking sleeve 3 onto the valve seat 7 with the help of a wrench.

[0024] A sealing ring 6 is inserted into the slot 12 of the connector 1 at the lower side of the connecting disk 2. The connector 1 is provided with multiple slots 12. The connecting disk 2 is arranged in the upper slot 12, and the lower slot 12 can be connected with several sealing rings 6 to achieve multiple sealing.

[0025] A cylindrical valve seat 7 is provided below the joint 1. An annular groove 71 is formed on the inner wall of the upper end of the valve seat 7. A plurality of limiting tooth grooves 72 are formed on the lower end surface of the annular groove 71. An external thread is formed on the outer wall of the upper end of the valve seat 7.

[0026] The connector 1 is inserted into the valve seat 7, and the limiting tooth blocks 11 at the lower end of the connector 1 are respectively inserted into the limiting tooth grooves 72 of the valve seat 7, and the sealing ring 6 on the connector 1 is pressed against the inner wall of the annular groove 71; the internal thread locking sleeve 3 is screwed on the valve seat 7; the limiting tooth groove 72 cooperates with the limiting tooth block 11 to limit the radial rotation between the connector 1 and the valve seat 7, and the axial movement of the connector 1 and the valve seat 7 is realized based on the internal thread locking sleeve 3.

[0027] The diameter of the inner wall of the annular groove 71 on the valve seat 7 is greater than the diameter of the outer wall of the connector 1 .

[0028] The distance from the lower end surface of the connecting plate 2 to the lower end surface of the limiting tooth block 11 is greater than the distance from the lower end surface of the annular groove 71 on the valve seat 7 to the upper end surface of the valve seat 7. Otherwise, the limiting tooth block 11 will not enter the limiting tooth groove 72.

[0029] The diameter of the inner wall of the connection disk 2 is equal to the diameter of the inner bottom surface of the clamping groove 12 on the connector 1 , and the thickness of the connection disk 2 is smaller than the groove width of the clamping groove 12 .

[0030] Working principle: The utility model is a pipe joint with an end face tooth structure. The technical point of the pipe joint is that an internal thread locking sleeve 3 is pivotally connected to a slot 12 on the joint 1, and then the joint 1 is inserted into the valve seat 7. The joint 1 is pressed into the valve seat 7 through the internal thread locking sleeve 3, which can limit the axial movement of the joint 1.

[0031] The pivotal connection structure between the internal thread locking sleeve 3 and the joint 1 adopts a connecting plate 2 composed of two semicircular ring-shaped clamping plates as a connecting piece, and the internal thread locking sleeve 3 is also conveniently installed on the joint 1.

[0032] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. A pipe joint with an end face tooth structure, comprising a cylindrical ring-shaped joint (1), a plurality of limit tooth blocks (11) formed on the lower end face of the joint (1), and a plurality of annular grooves (12) formed on the outer wall of the joint (1), characterized in that: A circular connecting disk (2) is inserted into the clamping groove (12) on the upper side of the connector (1), a cylindrical internal thread locking sleeve (3) is fixedly connected to the connecting disk (2), and the internal thread locking sleeve (3) is inserted into the connector (1); The connecting plate (2) is composed of two semicircular left clamping plates (21) and right clamping plates (22). The connecting plate (2) is inserted into an internal thread locking sleeve (3). A horizontal retaining ring is formed on the upper end of the internal thread locking sleeve (3). A plurality of vertical positioning pins (4) are respectively inserted and fixed on the left clamping plate (21) and the right clamping plate (22). The upper ends of the positioning pins (4) are inserted into the retaining ring of the internal thread locking sleeve (3). A vertical bolt (5) is inserted into the retaining ring of the internal thread locking sleeve (3). The lower ends of the bolts (5) are respectively screwed on the left clamping plate (21) and the right clamping plate (22).

2. A pipe joint with an end face tooth structure according to claim 1, characterized in that: The diameter of the inner wall of the internal thread locking sleeve (3) is greater than the diameter of the outer wall of the joint (1), and a regular hexagonal limiting convex ring is formed on the outer wall of the internal thread locking sleeve (3).

3. A pipe joint with an end face tooth structure according to claim 2, characterized in that: A sealing ring (6) is inserted into the slot (12) of the connector (1) at the lower side of the connection plate (2).

4. A pipe joint with an end face tooth structure according to claim 3, characterized in that: A cylindrical valve seat (7) is provided below the joint (1); an annular groove (71) is formed on the inner wall of the upper end of the valve seat (7); a plurality of limiting tooth grooves (72) are formed on the lower end surface of the annular groove (71); and an external thread is formed on the outer wall of the upper end of the valve seat (7); The connector (1) is inserted into the valve seat (7), the limiting tooth blocks (11) at the lower end of the connector (1) are respectively inserted into the limiting tooth grooves (72) of the valve seat (7), and the sealing ring (6) on the connector (1) is pressed against the inner wall of the annular groove (71); the internal thread locking sleeve (3) is screwed onto the valve seat (7).

5. A pipe joint with an end face tooth structure according to claim 4, characterized in that: The diameter of the inner wall of the annular groove (71) on the valve seat (7) is greater than the diameter of the outer wall of the joint (1).

6. A pipe joint with an end face tooth structure according to claim 1, characterized in that: The distance from the lower end surface of the connecting plate (2) to the lower end surface of the limiting tooth block (11) is greater than the distance from the lower end surface of the annular groove (71) on the valve seat (7) to the upper end surface of the valve seat (7).

7. A pipe joint with an end face tooth structure according to claim 1, characterized in that: The diameter of the inner wall of the connecting plate (2) is equal to the diameter of the inner bottom surface of the clamping groove (12) on the connector (1).

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