CN211951821U - From hydraulic pressure quick-operation joint for experiment of pressure release - Google Patents

Abstract

The utility model discloses a self-releasing experimental hydraulic quick connector, belonging to the field of hydraulic connectors, comprising a male head and a female head; A female head check valve core and a female head valve core spring are arranged inside, the male head check valve core is provided with an oil drain port, and a support rod is installed in the oil drain port, and the end of the support rod close to the female head is located in the male head. Outside the one-way valve core, the end of the support rod away from the female head blocks the oil drain port; when the male head is loaded with oil pressure and connected with the female head, the female head will squeeze the support rod first to open the drain port. The oil port can relieve the pressure of the male head, thereby opening the check valve core of the male head; it solves the problem that the connection and installation cannot be performed when the male head cannot be loaded with oil pressure in the prior art.

Description

A self-releasing hydraulic quick connector for experiment

technical field

The utility model relates to a hydraulic connector, in particular to a self-releasing hydraulic quick connector for experiments.

Background technique

Hydraulic technology has become one of the key technologies in industrial fields all over the world. According to incomplete statistics, most of the machinery and equipment now use hydraulic devices. The quick connector is a very frequently used component in hydraulic equipment. Its characteristic is that it can be quickly disconnected or connected to the oil circuit manually. Generally, it does not need any tools. It has the advantages of high speed, small size, convenience, time saving and improved work efficiency. . Widely used in hydraulic equipment, hydraulic training platform, dump trucks, papermaking, metallurgy, construction, industry, agriculture and many other fields.

In colleges and universities, hydraulics is a basic course for engineering majors, so hydraulic test benches and training benches are widely used. The most commonly used connectors in these test benches or training benches are quick connectors. Quick connectors are divided into male and female connectors. The male head is installed on the oil supply road, and the female head is on the connecting pipe, which is very convenient, but there are some problems in use, for example: when the experimental bench or training bench is loaded with hydraulic pressure, due to the hydraulic pressure The reason, the hydraulic check valve in the male header is held down by hydraulic pressure, making it difficult to insert the female header.

For example, "a plunger-type quick connector" disclosed in the Chinese patent document, the publication number of which is CN109882675A, includes a male joint body and a female joint body. The disadvantage is that when hydraulic pressure is applied, it is necessary to complete the In the case of the connection between the joint and the female joint, the valve core of the male joint cannot be opened due to the pressure, and the installation can be completed normally after the pressure is relieved.

SUMMARY OF THE INVENTION

The utility model is to overcome the problem that the hydraulic quick joint in the prior art cannot be installed when the pressure is loaded, and provides a self-releasing experimental hydraulic quick joint, which can be installed with oil pressure at the same time. The male end of the connector is decompressed, so that the valve core of the male connector can be squeezed open, so that the quick connector can be installed under pressure.

In order to achieve the above object, the utility model adopts the following technical solutions:

The utility model relates to a self-releasing experimental hydraulic quick joint, comprising a male head and a female head respectively installed on two pipes to be connected, one end of the female head is provided with a connection port, and the male head is provided with a connection port. One end is installed in the connection port, the female head is provided with a female head check valve core that blocks the oil circuit in the female head, and the female head check valve core is installed with a female head on the side away from the male head a valve core spring; the male head is provided with a male head one-way valve core that blocks the oil passage in the male head, and a male head valve core spring is installed on the side away from the female head of the male head one-way valve core; so The male check valve core is provided with an oil drain port, and a support rod is installed in the oil drain port, the end of the support rod close to the female head is located outside the male head check valve core, and the end of the support rod away from the female head is blocked. Close the drain port.

When no oil pressure is applied for installation, the male head is inserted into the female head, the female head check valve core and the male head check valve core are squeezed against each other, and the female head valve core spring and the male head valve core spring are compressed at the same time, so that The oil circuit connecting the male head and the female head; when the general quick connector is loaded with oil pressure for installation, the male head is inserted into the female head. Due to the action of the oil pressure on the male head, the male head one-way spool cannot be squeezed open. It will cause the oil circuit of the male head and the oil circuit of the female head to be unable to communicate; in this solution, during the connection process of the female head and the male head, the one-way spool of the female head will be squeezed with the support rod first, because the support rod The contact area between the right end and the oil is much smaller than the contact area between the male check valve core and the oil, and the pressure from the oil is also smaller, because the female check valve core will be squeezed to the right during the extrusion process. open, so that the oil drain port is opened. After the oil drain port is opened, the oil pressure in the male head drops, and the force of the oil on the male head check valve core is also reduced, so that the male head check valve core is also squeezed open. , so as to complete the installation of the quick connector while loading the oil pressure.

Preferably, a ball is installed on the inner wall of the connection port, a ferrule is installed on the outer wall of the connection port, and a ferrule spring is installed on the side of the ferrule away from the male head, and the ferrule is installed on the side close to the male head. One end of the male head is provided with a ball groove, and the ball groove is provided with a magnetic steel; when the ferrule spring is compressed, the ball groove will move to the outside of the ball, and under the action of the magnetic steel, The ball is sucked into the ball groove, so that the male head can be smoothly inserted into the connection port; after releasing the ferrule, the ball will be pressed into the connection port again and squeezed with the outside of the male head, so as to realize the connection between the male head and the female head ; Similarly, when the joint needs to be disassembled, it is only necessary to move the ferrule to make the ball enter the ball groove again, so that the ball and the outside of the male head are no longer squeezed, and the joint can be easily disassembled; compared with other connection methods, This solution makes the joint connection quicker and more convenient.

Preferably, the outer side of the male head is provided with a positioning groove for clamping the ball; in the process of connecting the male head and the female head, after the clamping sleeve is released, the ball can be clamped in the positioning groove, so that the ball and the male head can be clamped in the positioning groove. No relative movement occurs, making the connection between the male and female connectors more reliable.

Preferably, the outer side of the female head is provided with a convex edge, the convex edge is located in the ferrule, the ferrule spring is installed on the side of the convex edge close to the male head; the convex edge and the ferrule can The ferrule spring is wrapped to prevent the spring from being exposed to rust for a long time.

Preferably, a connection seal ring is installed on the inner wall of the connection port, and the connection seal ring is used to seal the gap between the outer side of the male head and the inner side of the female head to prevent oil from leaking out of the connection port.

Preferably, a male head sealing ring is provided on the contact surface between the male head check valve core and the inner wall of the male head, and a female head sealing ring is provided on the contact surface between the female head check valve core and the inner wall of the female head; The head sealing ring and the female head sealing ring are used to seal when they are not connected to prevent oil leakage when the male and female heads are not connected.

Preferably, a groove is provided on the outer side of the ferrule. Since the joint is used in the oil circuit, during the actual installation process, the installer will inevitably have oil on his hand, and the groove can prevent slipping, making the installation more convenient.

Therefore, the utility model has the following beneficial effects: (1) the male head can be decompressed during the connection process of the male head and the female head, so as to realize the installation while loading the oil pressure; (2) the connection between the male head and the female head The connection is convenient and fast, and the reliability is high; (3) The sealing of the connection is good.

Description of drawings

Fig. 1 is a structural schematic diagram of the present utility model.

Fig. 2 is a structural schematic diagram of the male head of the present invention.

Fig. 3 is a structural schematic diagram of the female head of the present invention.

In the figure: 1. Male head 11, male head check valve core 12, male head valve core spring 13, oil drain port 14, support rod 15, positioning groove 16, male head sealing ring 17, male head socket 18, male head Head circlip 2, female head 21, connection port 22, female head check valve core 23, female head valve core spring 24, ball 25, ferrule 26, ferrule spring 27, ball groove 28, magnetic steel 29, raised edge 210. Connection sealing ring 211, female head sealing ring 212, groove 213, female head socket 214, female head circlip.

Detailed ways

The present utility model will be further described below with reference to the accompanying drawings and specific embodiments.

In the embodiment shown in Figures 1-3, a self-releasing experimental hydraulic quick connector includes a male head 1 and a female head 2 respectively installed on two pipes to be connected, and one end of the female head is A connection port 21 is provided, the opening of the connection port is provided with a chamfer, one end of the male head is installed in the connection port, and the end of the male head inserted into the connection port is also provided with a chamfer. There is a female head check valve core 22 for blocking the inner oil path of the female head. The oil path of the female head gradually decreases in diameter near the connection port. The female head check valve core includes a section for blocking In the round table section of the oil circuit, the female check valve core is installed with a female head valve core spring 23 on the side away from the male head. The side is connected with the female head holder 213, the left side of the female head holder is installed with a female head circlip 214, and the female head one-way valve core also includes a directional rod located in the female head valve core spring; the male head There is a male head check valve core 11 which blocks the inner oil passage of the male head. The oil passage of the male head includes a section whose pipe diameter gradually decreases from right to left, and the male head check valve core includes a section The circular truncated section used to block the oil circuit, the male one-way spool is installed with a male spool spring 12 on the side away from the female head, and the left side of the male spool spring is connected to the male one-way spool Connection, the right side is connected with the male head socket 17, a male head circlip is installed on the right side of the male head socket, and the male head one-way valve core also includes a directional rod located in the male head valve core spring; the The male check valve core is provided with an oil drain port 13, the right end of the oil drain port has a section whose diameter gradually decreases from right to left, and a support rod 14 is installed in the oil drain port, and the support rod is close to the female head. One end is located outside the male one-way valve core, and the end of the support rod away from the female head is a plug that blocks the right end of the oil drain port, and a support rod spring is also installed on the right side of the plug; when the male head is connected to the female head After the head is connected, there is still an oil drain area between the male check valve core and the female head check valve core; the inner wall of the connection port is equipped with balls 24, and a part of the balls exposed to the inner wall is located inside the connection port, and the exposed part is located on the inner side of the connection port. It is smaller than the part of the ball located in the inner wall, so that the ball can move to the outside but cannot fall into the connection port. The outer wall of the connection port is equipped with a ferrule 25, and the ferrule is installed on the side away from the male head. A ferrule Spring 26, the sleeve is provided with a ball groove 27 on the end close to the male head, the ball groove is located on the right side of the ball in a horizontal position, the left side of the ball groove is provided with a slope, and the ball groove is provided with Magnetic steel 28, the ball groove is an annular groove in the connection port, there are several balls in the ball groove, and the magnetic steel is annular magnetic steel; The groove is formed by two convex rings with trapezoidal cross-section; the outer side of the female head is provided with a convex edge 29, the convex edge is located in the ferrule, and the ferrule spring is installed on the side of the convex edge close to the male head, During the left and right movement of the ferrule, the raised edge and the ferrule spring are always wrapped in the ferrule; a connecting seal ring 210 is installed on the inner wall of the connecting port, and the connecting seal ring is located between the female head and the male head; A male head sealing ring is provided on the contact surface of the male head check valve core and the inner wall of the male head 16. A female head sealing ring 211 is provided on the contact surface of the female head check valve core and the inner wall of the female head, the male head sealing ring is located on the circular table section of the male head, and the female head sealing ring is located on the circular table of the female head. A groove 212 is provided on the outer side of the ferrule.

When connecting the male head and the female head, insert the male head into the connection port of the female head from right to left. When the left end of the male head touches the ball, move the ferrule to the left by hand so that the ball groove is on the outside of the ball; The magnetic steel in the ball groove attracts the balls, so that the balls move to the outside; after the balls move outwards, the male head cannot be blocked, so that the male head can enter the connection port smoothly; the male head and the connection seal ring squeeze each other after entering the connection port completely; loose After the ferrule is opened, under the action of the ferrule spring, the spring is reset to the right. During the process of the ball groove relative to the ball to the right, the slope of the ball groove gradually squeezes the ball to the inside of the connection port, so as to squeeze the ball into the positioning of the male head. slot, so that the male and female heads are relatively fixed.

When the male head is loaded with oil pressure, the connection with the female head is carried out, and the male head check valve core and the female head check valve core are gradually approached. Because there is oil pressure in the male head oil circuit and there is no oil pressure in the female head oil circuit , the female check spool can be opened directly but the male check spool will not open directly, the female check spool first contacts the left end of the strut and squeezes each other, so that the strut is one-way relative to the male head Move the spool to the right, the plug leaves the oil drain port, so that the oil drain port is opened, and the oil in the male head enters the oil drain area from the oil drain port to the left, thereby reducing the oil pressure at the right end of the male head oil passage. , the pressure in the oil drain area increases, so that the male head check valve core moves to the right, and the male head check valve core is opened, thereby connecting the oil circuit of the male head and the female head; due to the existence of the connecting seal ring, the male head and the After the female head is connected, the oil will not leak from the gap between the male head and the female head; due to the existence of the male head sealing ring and the female head sealing ring, the oil leakage will not occur when the male head and the female head are used separately.

Claims (7)

1. A self-pressure-relief experimental hydraulic quick connector comprises a male connector (1) and a female connector (2) which are respectively installed on two pipelines to be connected, wherein one end of the female connector is provided with a connecting port (21), and one end of the male connector is installed in the connecting port, and the self-pressure-relief experimental hydraulic quick connector is characterized in that a female one-way valve core (22) for plugging an oil way in the female connector is arranged in the female connector, and a female valve core spring (23) is installed on one side, far away from the male connector, of the female one-way valve core; a male one-way valve core (11) for plugging an oil way in the male is arranged in the male, and a male valve core spring (12) is arranged on one side of the male single valve core far away from the female; be equipped with draining port (13) in the public first one-way valve core, install branch (14) in the draining port, branch is close to female one end and is located outside public first one-way valve core, branch is kept away from female one end and is plugged up the draining port.

2. The self-pressure-relief experimental hydraulic quick connector as claimed in claim 1, wherein a ball (24) is mounted on the inner wall of the connector, a clamping sleeve (25) is mounted on the outer wall of the connector, a clamping sleeve spring (26) is mounted on one side of the clamping sleeve far away from the male head, a ball groove (27) is formed in one end of the clamping sleeve close to the male head, and magnetic steel (28) is arranged in the ball groove.

3. The self-pressure-relief experimental hydraulic quick coupling as claimed in claim 2, wherein a positioning groove (15) for clamping the ball is formed on the outer side of the male head.

4. The self-pressure-relief experimental hydraulic quick connector as claimed in claim 2, wherein a flange (29) is provided on the outer side of the female head, the flange is located in a sleeve, and the sleeve spring is mounted on one side of the flange close to the male head.

5. The self-pressure-relief experimental hydraulic quick connector as claimed in any one of claims 1-4, wherein a connecting sealing ring (210) is mounted on the inner wall of the connecting port.

6. The self-pressure-relief experimental hydraulic quick connector as claimed in any one of claims 1-4, wherein a male sealing ring (16) is arranged on a contact surface of the male one-way valve core and an inner wall of the male connector, and a female sealing ring (211) is arranged on a contact surface of the female one-way valve core and an inner wall of the female connector.

7. The self-pressure-relief experimental hydraulic quick connector as claimed in any one of claims 2-4, wherein a groove (212) is formed on the outer side of the ferrule.

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