Pneumatic female joint suitable for various pneumatic male joints

Abstract

A pneumatic female connector suitable for various pneumatic male connectors comprises a tubular connector body, one end of the connector body is provided with a valve element for controlling gas to enter and exit, the end, in the connector body, of the valve element is connected with the inner wall of the connector body through a sealing ring, and the other end of the valve element extends out of the connector body. The outer wall of the extending part of the valve element is connected with a pneumatic male connector connecting device in a matched mode, an annular third limiting groove is formed in the inner wall of the extending part of the valve element, and a step-shaped sealing ring is installed in the third limiting groove in an embedded mode. And the joint body is vertically connected with the exhaust valve in a penetrating manner. The pneumatic male connector connecting device is matched with the step-shaped sealing ring to achieve connection of pneumatic male connectors of various lengths and diameters, the exhaust performance of the connector body is achieved by combining the exhaust valve structure, and the pneumatic male connectors are convenient to disassemble and assemble.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pneumatic pipeline joint technical field, especially relate to a kind of pneumatic female joint suitable for multiple pneumatic male joint. BACKGROUND

[0002] Pneumatic pipeline joint is currently important connecting component for connecting gas source of pneumatic pipeline system, and has important connecting effect.The existing pneumatic female joint needs to connect or disconnect pneumatic male joint frequently in workshop pneumatic system, but generally one specification pneumatic female joint matches one specification pneumatic male joint, that is one-to-one correspondence, with the increase of production and processing workshop equipment type, different gas source flow adaptability needs to connect multiple different diameter, different length pneumatic male joint, then different male joint needs different female joint to match, leading to entire gas source connection system, especially pneumatic female joint needs to be installed multiple specifications to match.In addition, after the connection of existing male joint and female joint, high-pressure gas exists at the connection, and the separation of male joint and female joint can be realized only after closing gas source, how to solve the above technical problems is the object of research for the person skilled in the art. CONTENT OF UTILITY MODEL

[0003] The utility model provides a kind of structure simple, male joint and female joint gas source pressure connection, separation is easy, pneumatic female joint suitable for multiple pneumatic male joint.

[0004] The utility model provides a kind of pneumatic female connector suitable for multiple pneumatic male connectors, including tubular connector body, the valve core of control gas import and export is equipped with one end of the connector body, valve core is coaxial with connector body with tubular structure, valve core is connected with the inner wall of connector body by sealing ring at one end inside connector body, valve core other end extends connector body, valve core outer wall in extending part is matched and connected with the connecting device of pneumatic male connector, valve core inner wall in extending part is equipped with annular third limit slot, third limit slot is embedded and installed with third sealing ring of step shape, the inner wall of third sealing ring is equipped with two different diameters first sealing hole and second sealing hole, first sealing surface is equipped at the junction of first sealing hole and second sealing hole, the outer wall of third sealing ring is equipped with concave ring, and concave ring is embedded with the convex ring of valve core inner wall;The connector body is vertically connected with the valve stem of exhaust valve.The exhaust valve includes valve stem, valve stem connects first sealing ring to control the opening and closing of valve port arranged on the pipe wall of connector body, one side of valve port is connected with the inner wall of connector body, and the other side is connected with exhaust cavity, and exhaust cavity is connected with inclined hole located on the pipe wall of connector body.The pneumatic female connector is connected with the inner wall of connector body by sealing ring at one end inside connector body, that is, the entire pneumatic pipeline is in closed state when pneumatic female connector is connected with gas source, and there is no gas leakage, and the valve core is opened only after pneumatic male connector is connected to make pneumatic male connector work, in order to improve the connection and adaptation performance of pneumatic female connector to multiple specifications of pneumatic male connector, third sealing ring of step shape is embedded and installed in third limit slot, and first sealing hole and second sealing hole of two different diameters can adapt to two different diameter pneumatic male connectors, and end face sealing structure of different length pneumatic male connector is formed by first sealing surface based on two different diameter pneumatic male connectors, so that the technical performance of multiple pneumatic male connectors adapting to one pneumatic female connector is realized.Because the pneumatic female connector is in closed state under normal circumstances, one end is connected with gas source with pressure, and the other end can be directly connected with pneumatic male connector, in order to realize the quick separation performance of pneumatic male connector and pneumatic female connector under the condition of gas pressure, and at this time, the valve core of pneumatic female connector cannot be directly closed because the entire pipeline has high pressure, the utility model is vertically connected with valve stem by connector body, valve stem connects first sealing ring to control the opening and closing of valve port arranged on the pipe wall of connector body, one side of valve port is connected with the inner wall of connector body, and the other side is connected with exhaust cavity, and exhaust cavity is connected with inclined hole located on the pipe wall of connector body, the opening and closing of exhaust cavity is controlled by valve stem by vertically connecting valve stem by connector body, and the pressure in pneumatic female connector is reduced by inclined hole for pressure relief and exhaust, so that pneumatic female connector and pneumatic male connector are separated under pressure, pneumatic female connector is automatically closed pipeline by valve core after pneumatic male connector is separated to prevent gas leakage, and the technical problem that personnel walks long distance to open and close gas source to separate pneumatic female connector and pneumatic male connector under the condition that large workshop gas source and pneumatic female connector are far apart is avoided.

[0005] The sealing ring is connected to the mounting groove in the inner part of the connector body on one side, and is provided with a limiting ring on the other side; the valve core is provided with a venting concave ring on one end close to the sealing ring, and is provided with air holes on the circumference of the venting concave ring; when the valve core is connected to the sealing ring on one end, the axial front and back space of the sealing ring is isolated from the air; when the valve core extends out of the sealing ring on one end, the air holes are connected to the axial front and back space of the sealing ring.

[0006] The pneumatic male connector connecting device comprises a first spring and a first connecting pipe arranged on the outer circumference of the valve core between the valve core and the connector body, one end of the first connecting pipe is connected to the inner wall of the connector body through threads, the pipe wall of the first connecting pipe is provided with a limiting hole, a limiting steel ball is installed in the limiting hole, a second spring is sleeved on the outer circumference of the first connecting pipe, a control pipe is sleeved on the outer circumference of the second spring, the inner wall of the control pipe is provided with annular first and second limiting grooves with different depths, the first limiting groove accommodates more than half of the limiting steel ball, the second limiting groove accommodates less than half of the limiting steel ball, and the first and second limiting grooves are arranged along the axial direction of the control pipe; one end of the second spring is connected to the end face of the valve core, and the other end is connected to the reduced diameter step face of the inner wall of the control pipe. The pneumatic male connector connecting device is matched with the pneumatic male connector through the limiting hole of the pipe wall of the first connecting pipe and the limiting steel ball; when the pneumatic male connector needs to be connected, the control pipe is pressed down to compress the second spring, the pneumatic male connector is inserted into the inner wall of the first connecting pipe while the limiting steel ball is extruded into the first limiting groove, then the control pipe is reset under the action of the second spring, the limiting steel ball is extruded into the second limiting groove to complete the clamping of the pneumatic male connector, the pneumatic male connector and the pneumatic female connector are prevented from being separated to complete the quick connection performance; while being connected, the pneumatic male connector pushes the one end of the valve core to extend out of the sealing ring, the air holes of the valve core are connected to the axial front and back space of the sealing ring to realize the automatic connection performance of the pneumatic male connector and the pneumatic female connector inside, and the pneumatic source does not need to be opened and closed twice.

[0007] The second sealing hole of the third sealing ring is connected to the concave ring through a sealing end face, which can further seal the connecting end face of the pneumatic male connector twice.

[0008] The connector body is provided with a mounting step hole with a bottom face at each end of the valve rod, the bottom face of the mounting step hole is connected to one end of the valve rod, the valve rod extends out of the connector body at this end, the valve rod is connected to the second mounting step hole of the connector body through the first sealing seat at the other end, the bottom of the second mounting step hole is an exhaust cavity, and the end of the first sealing seat is connected to the first sealing ring. The connector body is provided with a mounting step hole with a bottom face at each end of the valve rod, which improves the sealing performance between the connector body and the valve rod, ensures that the exhaust cavity only exhausts when the valve rod is open, and facilitates the separation of the pneumatic male connector and the pneumatic female connector after the exhaust pressure relief.

[0009] The first sealing seat outer periphery is provided with a second sealing ring, the second sealing ring is tightly connected with the second installation step hole inner wall to improve the sealing performance; the valve rod one end and the installation step hole cooperation place are provided with a fourth sealing ring to improve the sealing performance.

[0010] The joint body outer periphery is provided with an inclined conical surface, the taper of the inclined hole is consistent with the conical surface, the inclined hole machining drilling difficulty is reduced, and the conical surface provides a reference surface for the inclined hole drilling.

[0011] The valve port inner side is provided with a first protrusion located at the valve rod outer periphery, the first protrusion and the valve rod outer periphery are provided with a reset spring, one end of the reset spring is connected with the exhaust cavity outer wall, and the other end is connected with the valve rod outer periphery boss, and the reset spring realizes automatic pushing of the valve rod to close the exhaust cavity.

[0012] The utility model discloses a pneumatic male joint connecting device cooperates with the sealing ring of step shape to realize the connection of various length diameter pneumatic male joint, and the exhaust valve structure realizes the exhaust performance of joint body and is convenient for the dismounting installation of pneumatic male joint. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model makes further explanation in combination with the drawings:

[0014] Figure 1 It is the three-dimensional structure schematic diagram of pneumatic female joint suitable for various pneumatic male joints of the utility model;

[0015] Figure 2 It is another angle three-dimensional structure schematic diagram of pneumatic female joint suitable for various pneumatic male joints of the utility model;

[0016] Figure 3 It is the overhead structure schematic diagram of pneumatic female joint suitable for various pneumatic male joints of the utility model;

[0017] Figure 4 It is Figure 3 It is the section structure schematic diagram of A-A direction of the utility model;

[0018] Figure 5 It is Figure 4 It is the enlarged structure schematic diagram of B place of the utility model;

[0019] Figure 6 It is the section structure schematic diagram of pneumatic male joint. SPECIFIC EMBODIMENTS

[0020] The following will be combined with the drawings of the utility model to make further detailed explanation to the technical scheme of the patent. Figures 1-6 The following will be combined with the drawings of the utility model to make further detailed explanation to the technical scheme of the patent.

[0021] A kind of pneumatic female connector suitable for multiple pneumatic male connectors, including tubular connector body 1, connector body 1 one end is equipped with the valve core 1 of controlling gas import and export, valve core 29 is tubular structure and coaxial with connector body 1, valve core 29 is connected in the inner wall of connector body 1 by sealing ring 88 at one end inside connector body, valve core 29 other end extends connector body, valve core is connected in the outer wall of extending part, and the third limit slot 14 of annular is arranged in the inner wall of extending part, third limit slot 14 is embedded and installed with the third sealing ring 16 of step, the inner wall of third sealing ring 16 is equipped with the first sealing hole 20 and the second sealing hole 18 of different diameters, first sealing hole 20 and second sealing hole 18 are equipped with first sealing surface 19 at the junction, the outer wall of third sealing ring 16 is equipped with concave ring 15, and concave ring 15 is embedded with the convex ring 22 of valve core inner wall;The connector body is vertically connected with exhaust valve, and exhaust valve includes valve rod 8, valve rod 8 is connected with first sealing ring 30 to control the opening and closing of valve port 35 arranged on the pipe wall of connector body, one side of valve port 35 is connected with the inner wall of connector body, and the other side is connected with exhaust cavity 34, and exhaust cavity 34 is connected with inclined hole 4 located on the pipe wall of connector body.The second sealing hole 18 of third sealing ring 16 is connected with the sealing end surface 17 between concave ring 15.One side of sealing ring 88 is attached to the mounting groove in the inner part of connector body 1, and the other side is equipped with limit ring 23.Valve core 29 is equipped with air vent concave ring 12 at one end close to sealing ring 88, and air vent concave ring 12 is equipped with air hole 52 on circumference, when valve core 29 is closed and connected with sealing ring 88 at one end, the space in front and back of sealing ring 88 is isolated from air vent, when valve core 29 extends sealing ring 88 at one end, air hole 52 is connected with the space in front and back of sealing ring 88.

[0022] As the structure is preferred, the pneumatic male connector connecting device includes first spring 27 and first connecting pipe 38 arranged on the outer periphery of valve core 29 between valve core 29 and connector body, one end of first connecting pipe 38 is connected with the inner wall of connector body screw thread 99, the pipe wall of first connecting pipe 38 is equipped with limit hole 39, and limit steel ball 24 is installed in limit hole 39.First connecting pipe 38 is sleeved with second spring 28, and control pipe 5 is sleeved with second spring 28, the inner wall of control pipe 5 is equipped with annular first limit slot 25 and second limit slot 33 of different depths, first limit slot 25 contains more than half of limit steel ball, second limit slot 33 contains less than half of limit steel ball 24, and first limit slot and second limit slot are arranged in front and back along the axial direction of control pipe;Second spring 28 one end is connected with the end surface of valve core 29, and the other end is connected with the reduced diameter step surface 13 of the inner wall of control pipe 5.

[0023] In order to further improve the air tightness effect, the joint body is provided with a bottom mounting step hole 81 at each end of the valve rod 8, the bottom of the mounting step hole 81 is connected with one end of the valve rod 8, the valve rod 8 extends out of the joint body at this end, the valve rod 8 is connected with the second mounting step hole of the joint body at the other end through the first sealing seat 2, the bottom of the second mounting step hole is the exhaust cavity 34, and the end of the first sealing seat 2 is connected with the first sealing ring 30. The first sealing seat 2 is provided with the second sealing ring 10 on the outer periphery, and the second sealing ring 10 is tightly connected with the inner wall of the second mounting step hole. The fourth sealing ring 11 is arranged at the connection position between the one end of the valve rod 8 and the mounting step hole 81.

[0024] In order to reduce the manufacturing difficulty of the pneumatic female connector exhaust structure, the outer periphery of the joint body 1 is provided with an inclined conical surface 9, and the taper of the inclined hole 4 is consistent with the conical surface 9. In order to realize the automatic reset performance, the first protrusion 32 is arranged on the outer periphery of the valve rod 8 inside the valve port 35, the first protrusion 32 and the outer periphery of the valve rod 8 are provided with the reset spring 6, one end of the reset spring 6 is connected with the outer wall of the exhaust cavity 34, and the other end is connected with the boss 69 on the outer periphery of the valve rod 8.

[0025] The utility model is suitable for the pneumatic female connector of various pneumatic male connectors, and the specific working process is as follows: the control pipe 5 is pulled down to press the second spring 28, then the pneumatic male connector 74 is inserted, the protrusion 73 on the outer periphery of the pneumatic male connector 74 pushes the limiting steel ball 24 into the first limiting groove 25, then the second connecting pipe 72 or the end face 71 on the top of the pneumatic male connector 74 is matched with the third sealing ring 16 in the form of steps, the first sealing hole 20, the second sealing hole 18 or the first sealing surface 19 are matched according to the different diameters and lengths of the second connecting pipe 72 on the top of the pneumatic male connector 74 to realize the matching performance of the pneumatic female connector for various pneumatic male connectors, meanwhile, the pneumatic male connector 74 pushes the one end of the valve core 29 to extend out of the sealing ring 88, the air hole 52 is connected with the axial space before and after the sealing ring 88 to realize the connection between the pneumatic male connector and the internal air passage of the pneumatic female connector, the control pipe 5 is reset under the action of the second spring 28 to make the limiting steel ball 24 enter the second limiting groove 33, the limiting steel ball 24 is matched with the protrusion 73 on the outer periphery of the pneumatic male connector 74 to realize the long-acting connection performance of the pneumatic male connector 74 and the pneumatic female connector. When it is needed to separate the pneumatic male connector and the pneumatic female connector, the control pipe 5 and the valve rod 8 are manually pushed, the valve rod 8 pushes the first sealing ring 30 to open the exhaust cavity 34 to exhaust and reduce pressure through the inclined hole 4, then the pneumatic male connector is pulled outwards, the protrusion 73 on the outer periphery of the pneumatic male connector 74 pushes the limiting steel ball 24 to enter the first limiting groove 25 again, and the pneumatic male connector 74 and the pneumatic female connector are separated, the whole connection and separation process is simple and fast, and it is not needed to frequently replace different specifications of the pneumatic female connector or to close the air source.

[0026] The preferred embodiments of the present patent have been described in detail, but the present patent is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present patent.

Claims

1. A pneumatic female coupling suitable for a plurality of pneumatic male couplings, comprising a tubular coupling body (1), characterized in that: The joint body (1) is provided with a valve core (29) at one end for controlling the gas inlet and outlet, the valve core (29) is a tubular structure coaxial with the joint body (1), the valve core (29) is connected to the inner wall of the joint body (1) at one end through a sealing ring (88), the other end of the valve core (29) extends out of the joint body, the outer wall of the extended part of the valve core is connected to a pneumatic male joint connecting device, the inner wall of the extended part of the valve core is provided with an annular third limiting groove (14), a stepped third sealing ring (16) is embedded and installed in the third limiting groove (14), the inner wall of the third sealing ring (16) is provided with two first sealing holes (20) and second sealing holes (18) with different diameters, a first sealing surface (19) is arranged at the connection between the first sealing hole (20) and the second sealing hole (18), the outer wall of the third sealing ring (16) is provided with a concave ring (15), and the concave ring (15) is fitted with a convex ring (22) on the inner wall of the valve core.

2. A pneumatic female coupling suitable for a plurality of pneumatic male couplings according to claim 1, characterized in that: The exhaust valve includes a valve rod (8), the valve rod (8) is connected to a first sealing ring (30) to control the opening and closing of a valve port (35) arranged on the pipe wall of the joint body, one side of the valve port (35) is connected to the inner wall of the joint body, and the other side is connected to an exhaust cavity (34), and the exhaust cavity (34) is connected to an inclined hole (4) arranged on the pipe wall of the joint body.

3. A pneumatic female coupling suitable for a plurality of pneumatic male couplings according to claim 1, characterized in that: The pneumatic male joint connecting device includes a first spring (27) and a first connecting pipe (38) arranged on the outer periphery of the valve core (29) between the valve core (29) and the joint body, one end of the first connecting pipe (38) is connected to the inner wall of the joint body through a thread (99), the pipe wall of the first connecting pipe (38) is provided with a limiting hole (39), a limiting steel ball (24) is installed in the limiting hole (39), the outer periphery of the first connecting pipe (38) is sleeved with a second spring (28), the outer periphery of the second spring (28) is sleeved with a control pipe (5), the inner wall of the control pipe (5) is provided with annular first limiting grooves (25) and second limiting grooves (33) with different depths, the first limiting grooves (25) accommodate more than half of the limiting steel balls, the second limiting grooves (33) accommodate less than half of the limiting steel balls (24), and the first limiting grooves and the second limiting grooves are arranged in front and back along the axial direction of the control pipe; one end of the second spring (28) is connected to the end face of the valve core (29), and the other end is connected to the reduced diameter stepped face (13) of the inner wall of the control pipe (5).

4. The pneumatic female coupling suitable for a plurality of pneumatic male couplings according to claim 1, characterized in that: The second sealing hole (18) of the third sealing ring (16) is connected to the concave ring (15) through a sealing end face (17).

5. A pneumatic female coupling suitable for a plurality of pneumatic male couplings according to claim 2, characterized in that: The joint body is provided with a bottom mounting step hole (81) at each end of the valve rod (8), the bottom of the mounting step hole (81) is connected to one end of the valve rod (8), the valve rod (8) extends out of the joint body at this end, the valve rod (8) is connected to the second mounting step hole of the joint body through the first sealing seat (2) at the other end, the bottom of the second mounting step hole is an exhaust cavity (34), and the end of the first sealing seat (2) is connected to the first sealing ring (30).

6. A pneumatic female coupling suitable for a plurality of pneumatic male couplings according to claim 5, characterized in that: The first sealing seat (2) is provided with a second sealing ring (10) on the outer periphery, and the second sealing ring (10) is in close connection with the inner wall of the second mounting step hole; one end of the valve stem (8) is provided with a fourth sealing ring (11) at the joint with the mounting step hole (81).

7. A pneumatic female coupling suitable for a plurality of pneumatic male couplings according to claim 1, characterized in that: The joint body (1) is provided with an inclined conical surface (9) on the outer periphery, and the taper of the inclined hole (4) is consistent with the conical surface (9).

8. The pneumatic female coupling adapted for a plurality of pneumatic male couplings of claim 1, wherein: One side of the sealing ring (88) is in close connection with the mounting groove in the joint body (1), and the other side is provided with a limiting ring (23); the valve core (29) is provided with a venting concave ring (12) at one end close to the sealing ring (88), and the venting concave ring (12) is provided with air holes (52) on the outer periphery; when the one end of the valve core (29) is in close connection with the sealing ring (88), the axial front and back spaces of the sealing ring (88) are isolated from the air; when the one end of the valve core (29) extends out of the sealing ring (88), the air holes (52) are connected with the axial front and back spaces of the sealing ring (88).

9. A pneumatic female coupling suitable for a plurality of pneumatic male couplings according to claim 2, characterized in that: The inner side of the valve port (35) is provided with a first protrusion (32) located on the outer periphery of the valve stem (8), and the first protrusion (32) and the outer periphery of the valve stem (8) are provided with a return spring (6); one end of the return spring (6) is connected with the outer wall of the exhaust cavity (34), and the other end is connected with the boss (69) on the outer periphery of the valve stem (8).

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