Self-sealing type vacuum breaking quick connecting device

Abstract

The utility model provides a self-sealing type vacuum breaking quick connecting device which comprises a vacuum breaking male head and a vacuum breaking female head which are matched with each other, a partition sealing piece is movably arranged in an inner cavity of the vacuum breaking male head and divides the inner cavity into an air cavity A and an air cavity B, the air cavity A is connected with an air pipe connector A, the air cavity B is connected with an air pipe connector B, and the partition sealing piece is fixedly connected with a clamping assembly. The clamping assembly extends out of the air cavity A; the female head comprises a cap with a ventilation cavity, a sealing ejection piece is elastically ejected in the ventilation cavity, and the sealing ejection piece elastically blocks a top opening of the ventilation cavity; the vacuum breaking male head presses the cap, the clamping assembly is in butt joint with the sealing ejection piece, and positive pressure is formed in the air cavity A to drive the sealing ejection piece to open the top opening of the ventilation cavity. A clamping mode is matched with positive pressure to drive and open a valve rod component, the sealing performance is improved through elastic pre-tightening force, the stability of an open passage is ensured by gradually increasing the positive pressure, and meanwhile the positive pressure value is controlled to accurately control the opening degree. The automation degree is high, and operation is more convenient and accurate.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical technology and relates to a quick connector used for an automated line vacuum carrier, in particular to a self-sealing vacuum-breaking quick connection device. Background Art

[0002] A vacuum quick connector is a device used to connect and separate vacuum pipes, equipment, and components in a vacuum system. Its main functions include the following aspects:

[0003] 1. Quick connection and disconnection: Vacuum quick connectors enable quick connection and disconnection, reducing operation time and labor costs. This is especially important when equipment needs to be frequently replaced or cleaned.

[0004] 2. Ensure vacuum sealing: It is designed to provide an efficient seal to prevent gas leakage and maintain the vacuum state within the system. This is key to ensure the normal operation of experiments and industrial processes.

[0005] 3. Adapt to various working conditions: Vacuum quick connectors can be made of different materials (such as stainless steel, aluminum alloy, etc.) according to different usage environments to adapt to high temperature, corrosive or other harsh conditions.

[0006] With the advancement of product technology, conventional purely mechanical clamping carriers are no longer able to meet process requirements. The industry urgently needs vacuum adsorption carriers to replace traditional clamping carriers. Furthermore, with the increasing prevalence of automated production lines, traditional vacuum pipe joints are unable to achieve the rapid vacuum release function. Furthermore, the current industry has too few and too high-priced connectors that can achieve this, failing to meet the demands of 3C automated production lines.

[0007] For example, Chinese patent document 201620078530.2 discloses a new self-locking quick hydraulic connector, comprising a male connector body, a male spring, an expansion body, a male piston, a sealing ring, a threaded sleeve, a female spring, a female piston, a female connector body, and a ball bearing. The male spring is mounted within the male connector body, the expansion body comprises ten metal elastic petals, which are threadedly connected to the male connector body. The male piston has a tapered upper end with four through holes, and its lower end is threadedly connected to the metal retaining ring of the male piston. The threaded sleeve is threadedly connected to the female connector body, the female spring is mounted within the female connector body, the female piston is mounted on the female connector body, and the ball bearing is embedded in the female connector body. The beneficial effects of this utility model are: 1) It has a new self-locking structure that achieves double self-locking to improve the connector's high-pressure resistance and reliability; 2) It is also equipped with a one-way valve to ensure that the hydraulic pressure in the pipeline will not leak.

[0008] The aforementioned solution uses elastic pressure to open the valve hole, requiring precise control of the spring constants of the two sets of springs. Otherwise, it is difficult to accurately determine the degree of valve opening. Furthermore, over extended periods of opening and closing, the seal between the male and female connectors deteriorates, affecting the sealing effect of the joint. Utility Model Content

[0009] The purpose of the utility model is to solve the above problems in the existing technology and to propose a self-sealing vacuum-breaking quick connection device.

[0010] The purpose of the utility model can be achieved through the following technical solutions: a self-sealing vacuum-breaking quick connection device, comprising a matching vacuum-breaking male head and a female head, a partition seal movably provided in the inner cavity of the vacuum-breaking male head, the partition seal divides the inner cavity into an air cavity A and an air cavity B, the air cavity A is connected to the trachea joint A, the air cavity B is connected to the trachea joint B, the partition seal is fixedly connected to the clamping assembly, and the clamping assembly extends from the air cavity A; the female head comprises a cap with a vent cavity, the vent cavity elastically presses against a sealing top piece, and the sealing top piece elastically blocks the top opening of the vent cavity; the vacuum-breaking male head presses the cap, the clamping assembly and the sealing top piece form a docking connection, and a positive pressure is formed in the air cavity A to drive the sealing top piece to open the top opening of the vent cavity.

[0011] In the above-mentioned self-sealing vacuum-breaking quick connection device, the vacuum-breaking male connector includes a cylindrical shell with a variable-diameter cavity. The variable-diameter cavity gradually increases from the top opening to the bottom opening of the cylindrical shell to set a first-level cavity, a second-level cavity and a third-level cavity. The bottom opening of the cylindrical shell is blocked with a base A.

[0012] In the above-mentioned self-sealing vacuum-breaking quick connection device, the separation seal is specifically a piston, the outer periphery of the piston is sleeved with a sealing ring, and the sealing ring is tightly attached to the inner wall of the tertiary cavity to form a sliding connection.

[0013] In the above-mentioned self-sealing vacuum-breaking quick connection device, the clamping assembly includes a mounting column fixedly connected to the top surface of the piston, a mounting shaft protruding from the top of the mounting column, a clamping jaw on the mounting shaft, the mounting column extends into the secondary cavity to form a sliding connection, an annular groove is provided on the inner wall of the secondary cavity, a sealing ring is embedded in the annular groove, the sealing ring is sleeved on the mounting column to form a close connection, and the clamping jaw passes through the primary cavity to form a sliding connection.

[0014] In the above-mentioned self-sealing vacuum-breaking quick connection device, the clamping claw includes a claw rod, the claw rod is sleeved on the mounting shaft, a plurality of claw heads are arranged on the top side of the claw rod, and the plurality of claw heads are arranged in a circular array around the axis of the mounting shaft, and a clamping opening is formed between the plurality of claw heads. The outer side of the claw head has a convex arc portion, and the convex arc portion transitions to the outer side surface of the claw rod, and the convex arc portion is at least partially located outside the primary cavity.

[0015] In the above-mentioned self-sealing vacuum-breaking quick connection device, a small hole is set in the center of the top wall of the cap, and the small hole is the top opening of the above-mentioned ventilation cavity. A base B is set at the bottom end of the cap, and the center hole of the base B is the bottom opening of the ventilation cavity.

[0016] In the above-mentioned self-sealing vacuum-breaking quick connection device, the sealing top piece includes a shaft rod, the top end of the shaft rod is connected to the sealing head through an expanding step, the bottom end of the shaft rod is connected to the small-diameter rod through a reducing step, and a clamping block is protruding from the bottom end of the small-diameter rod. The outer periphery of the shaft rod is sleeved with a spring, the bottom end of the spring presses the base B, the top end of the spring presses the expanding step, and the clamping claw extends into the bottom opening of the ventilation cavity to clamp the clamping block.

[0017] In the above-mentioned self-sealing vacuum-breaking quick connection device, a second annular groove is formed on the inner surface of the top wall of the cap, a second sealing ring is embedded in the second annular groove, and the second sealing ring surrounds the outer circumference of the small hole.

[0018] In the above-mentioned self-sealing vacuum-breaking quick connection device, the sealing head is any one of a spherical body, a conical body, a T-shaped body, and a piston body.

[0019] In the above-mentioned self-sealing vacuum-breaking quick connection device, a flange is provided outwardly at the bottom end of the cap, a sealing gasket is sleeved on the outer periphery of the cap, and the sealing gasket is overlapped on the flange.

[0020] Compared with the existing technology, this self-sealing vacuum-breaking quick connection device has the following beneficial effects:

[0021] 1. Improved connectivity controllability: The multi-claw assembly is driven to converge and clamp, creating positive pressure within chamber A. This forces the clamping assembly to open the valve stem. This clamping mechanism, combined with positive pressure, opens the valve stem, enhancing sealing through elastic preload. Gradually increasing positive pressure ensures the stability of the opening path, while simultaneously controlling the positive pressure to precisely control the degree of opening. This automated process eliminates the need for manual intervention, making operation more convenient and precise, and suitable for efficient industrial applications.

[0022] 2. Quick docking and easy operation: When the vacuum-breaking male connector is docked with the female connector, the claws of the clamp enter the center hole of the female connector and automatically grasp the sealing top piece through the convergence drive mechanism of the convex arc. The entire operation is fast, reliable, and highly automated, reducing the need for manual intervention and improving operational efficiency.

[0023] 3. Modular design enhances adaptability: The device's various components, including the variable-diameter barrel, slidable piston, clamping assembly, and sealing top, are designed with modularity. Different components can be adjusted or replaced according to different scenarios and needs, increasing the system's flexibility and adaptability to various working conditions.

[0024] 4. Diverse sealing structures enhance sealing effectiveness: The sealing head has a variety of designs, including spherical, conical, T-shaped, and piston structures, which can be selected according to different operating environments and sealing requirements. The diverse sealing structures not only enhance the sealing effect, but also adapt to the stringent sealing requirements in different operating environments.

[0025] 5. Simplified female connector structure and reduced costs: The design of the female connector not only reduces the use of materials, but also greatly simplifies the structure of the female connector, reduces processing difficulty and carrier costs, and makes the production and maintenance of the device more economical.

[0026] In summary, the self-sealing vacuum-breaking quick connection device has the characteristics of simplified structure, improved sealing performance, automatic vacuum breaking and rapid operation, and has good economy, practicality and reliability. It is suitable for wide application in various vacuum equipment scenarios that require quick connection and sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a cross-sectional structural diagram of the self-sealing vacuum-breaking quick connection device.

[0028] Figure 2 This is the appearance structure diagram of this self-sealing vacuum breaking quick connection device.

[0029] Figure 3 This is a diagram of the internal structure of the vacuum breaking male connector in this self-sealing vacuum breaking quick connection device.

[0030] Figure 4 This is a three-dimensional structural diagram of the clamping jaws in this self-sealing vacuum-breaking quick connection device.

[0031] Figure 5 This is a three-dimensional structural diagram of the sealing top piece in this self-sealing vacuum-breaking quick connection device.

[0032] In the figure, 1. cylinder shell; 2. base A; 3. piston; 4. sealing ring; 5. mounting column; 6. clamping claw; 6a. claw head; 6b. convex arc portion; 6c. claw rod; 7. sealing ring 1; 8. cover cap; 9. base B; 10. sealing top piece; 10a. shaft rod; 10b. sealing head; 10c. small diameter rod; 10d. clamping block; 11. spring; 12. sealing ring 2; 13. sealing gasket; 14. trachea connector A; 15. trachea connector B. DETAILED DESCRIPTION

[0033] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0034] like Figures 1 to 3 As shown, this self-sealing vacuum-breaking quick-connect device includes a matching vacuum-breaking male and female connectors. The female connector is 21mm long, which is smaller than the common vacuum female connector (>30mm), thereby simplifying the female connector structure, reducing processing difficulty, and reducing vehicle costs. A partition seal is movably provided in the inner cavity of the vacuum-breaking male connector. The partition seal divides the inner cavity into air cavity A and air cavity B. Air cavity A is connected to the air pipe connector A14, and air cavity B is connected to the air pipe connector B15. The partition seal is fixedly connected to the clamping assembly, and the clamping assembly extends from air cavity A. The female connector includes a cap 8 with a vent cavity. The vent cavity elastically presses against a sealing top member 10, and the sealing top member 10 elastically blocks the top opening of the vent cavity. The vacuum-breaking male connector is pressed against the cap 8, and the clamping assembly and the sealing top member 10 are connected to each other. Positive pressure is generated in air cavity A, driving the sealing top member 10 to open the top opening of the vent cavity.

[0035] like Figure 1 As shown, the vacuum breaker includes a cylindrical shell 1 with a variable diameter cavity. The variable diameter cavity gradually increases from the top to the bottom of the cylindrical shell 1, forming a primary cavity, a secondary cavity, and a tertiary cavity. The bottom of the cylindrical shell 1 is sealed with a base A2. Specifically, the tertiary cavity is divided into air cavity A and air cavity B. The clamping assembly is assembled and guided through the secondary cavity, and the clamping assembly is guided and passed through the primary cavity.

[0036] like Figure 3 As shown, the separating seal is specifically a piston 3. A sealing ring 4 is sleeved on the outer periphery of the piston 3. The sealing ring 4 closely adheres to the inner wall of the tertiary cavity, forming a sliding connection. The diameter of the piston 3 matches the diameter of the tertiary cavity. As the piston 3 moves up and down axially within the tertiary cavity, the sealing ring 4 forms a seal to isolate air chamber A and air chamber B, preventing air from passing between the two cavities.

[0037] The clamping assembly includes a mounting column 5 fixed on the top surface of the piston 3, a mounting shaft protruding from the top of the mounting column 5, a clamping jaw 6 on the mounting shaft, the mounting column 5 extends into the secondary cavity to form a sliding connection, an annular groove 1 is provided on the inner wall of the secondary cavity, a sealing ring 7 is embedded in the annular groove 1, the sealing ring 1 7 is sleeved on the mounting column 5 to form a close connection, and the clamping jaw 6 is connected to the primary cavity to form a sliding connection.

[0038] The upward and downward movement of piston 3 synchronously drives the upward and downward movement of mounting post 5 and clamping jaw 6. The specifications of mounting post 5 match those of the secondary cavity. The stepped surface between the primary and secondary cavities forms a stop for mounting post 5, limiting its maximum upward travel. Sealing ring 7 provides a seal with mounting post 5, preventing leakage from air chamber A.

[0039] like Figure 1 and 4 As shown, the clamping claw 6 includes a claw rod 6c, which is sleeved on the mounting shaft. A plurality of claw heads 6a are arranged on the top side of the claw rod 6c. The plurality of claw heads 6a are arranged in a circular array around the axis of the mounting shaft. A clamping opening is formed between the plurality of claw heads 6a. The outer side of the claw head 6a has a convex arc portion 6b, which transitions to the outer side of the claw rod 6c, and the convex arc portion 6b is at least partially located outside the primary cavity.

[0040] In its natural state, the claw rod 6c is located within the primary cavity, with the claw heads 6a completely exposed above the primary cavity. Several of the claw heads are in a spread-out state, and the clamping opening is relaxed. As the claw rod 6c drives the claw heads 6a downward, they gradually enter the primary cavity. The caliber of the primary cavity forces the convex arc portion 6b to converge, causing the claw heads 6a to converge toward the center, tightening the clamping opening.

[0041] like Figure 1 As shown, a small hole is provided in the center of the top wall of the cap 8, which serves as the top opening of the aforementioned vent cavity. A base B9 is provided at the bottom end of the cap 8, and the center hole of the base B9 serves as the bottom opening of the vent cavity. The vent cavity of the cap 8 provides a vacuum-breaking channel, the bottom opening of the vent cavity provides space for the clamping jaws 6 to dock, and the top opening of the vent cavity forms a vacuum opening and closing valve.

[0042] like Figure 1 and 5 As shown, the sealing top member 10 includes a shaft 10a, the top of which is connected to a sealing head 10b via an expanding diameter step, and the bottom of which is connected to a small-diameter rod 10c via a reducing diameter step. A clamping block 10d is provided at the bottom end of the small-diameter rod 10c. A spring 11 is sleeved on the outer periphery of the shaft 10a, the bottom end of the spring 11 presses against the base B9, and the top end of the spring 11 presses against the expanding diameter step. The clamping jaws 6 extend into the bottom opening of the vent cavity to clamp the clamping block 10d. The main body of the sealing top member 10 is realized by the shaft 10a, the top opening of the vent cavity is sealed by the sealing head 10b, and the small-diameter rod 10c and the clamping block 10d are matched with the clamping opening of the clamping jaws 6 by the reduced diameter matching. The plurality of claws 6a close together to clamp the small-diameter rod 10c and form a clamping connection with the clamping block 10d, thereby achieving the function of grasping the sealing top member 10.

[0043] like Figure 1 As shown, the inner surface of the top wall of the cap 8 is provided with a second annular groove, within which a second sealing ring 12 is embedded. The second sealing ring 12 surrounds the outer circumference of the aperture. When the sealing head 10b seals the aperture, it forms a close contact with the second sealing ring 12, eliminating any gap between the sealing head 10b and the aperture, thereby ensuring a tight seal at the valve port.

[0044] The sealing head 10b can be any of a spherical, conical, T-shaped, or piston-shaped body. The conical surface of the conical body seals the small hole in the top wall of the cap 8. The cylindrical surface of the T-shaped body seals the small hole in the top wall of the cap 8. The end surface of the piston body seals the small hole in the top wall of the cap 8.

[0045] like Figure 1 and 2 As shown, the bottom end of the cap 8 is provided with a flange outward, and the outer periphery of the cap 8 is sleeved with a sealing gasket 13, which is overlapped on the flange. The sealing gasket 13 is installed and fixed by the flange, and the sealing gasket 13 is used to achieve the sealing of the female connector and other components.

[0046] The self-sealing vacuum-breaking quick-connect device works in the following ways:

[0047] 1. In the initial position, the claw rod 6c is located in the primary cavity, the claw head 6a is completely exposed above the primary cavity, several claw heads are in a diffused state, and the clamping mouth is relaxed.

[0048] 2. When the vacuum breaking action of the docking female connector is required, the vacuum breaking male connector is driven upward by the external structure, and the claw heads 6a of the clamping jaws 6 enter the central hole of the base B9, so that the claw heads 6a close together to clamp the small-diameter rod 10c and form a snap connection with the clamping block 10d, thereby grasping the sealing top piece 10.

[0049] 3. Gas is introduced into air chamber A through air pipe connector A14 to create positive pressure. As the pressure in air chamber A increases, piston 3 moves downward, simultaneously pulling the clamping assembly downward. Claws 6a gradually enter the primary cavity. The aperture of the primary cavity forces the convex arc portion 6b to converge, forcing the claws 6a to converge toward the center, clamping shaft 10a and sealing head 10b downward. Sealing head 10b clears the small hole in cap 8, opening the valve port. At this point, the vacuum chamber in the female connector is connected to atmospheric pressure, achieving the vacuum-breaking function.

[0050] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but will not deviate from the spirit of the present invention or exceed the defined scope. Although the present invention is described and described in detail in the drawings and the foregoing description, such illustrations and descriptions are considered to be illustrative or exemplary rather than restrictive. It should be understood that within the scope of the following claims, changes and modifications may be made by a person of ordinary skill. Specifically, the present invention covers additional embodiments having any combination of features from the different embodiments described above. Insofar as the expression "generally" or "substantially" is used, this patent application should be understood to disclose features and values that are also fully satisfied, i.e., without the aforementioned characterization as "generally" or "substantially".

[0051] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

Claims

1. A self-sealing vacuum-breaking quick-connect device, comprising a matching vacuum-breaking male connector and a matching female connector, characterized in that: A separating seal is movably provided in the inner cavity of the vacuum breaker male connector, and the separating seal divides the inner cavity into air cavity A and air cavity B. The air cavity A is connected to the trachea joint A, and the air cavity B is connected to the trachea joint B. The separating seal is fixedly connected to the clamping assembly, and the clamping assembly extends from the air cavity A; the female connector includes a cap with a vent cavity, and the vent cavity elastically presses against a sealing top piece, and the sealing top piece elastically blocks the top opening of the vent cavity; the vacuum breaker male connector is pressed against the cap, and the clamping assembly is connected to the sealing top piece, and a positive pressure is formed in the air cavity A to drive the sealing top piece to open the top opening of the vent cavity.

2. The self-sealing vacuum-breaking quick connection device according to claim 1, characterized in that: The vacuum breaker male connector includes a cylindrical shell with a variable diameter cavity, the variable diameter cavity is gradually enlarged from the top to the bottom of the cylindrical shell to form a primary cavity, a secondary cavity and a tertiary cavity, and the bottom of the cylindrical shell is blocked by a base A.

3. The self-sealing vacuum-breaking quick connection device according to claim 2, characterized in that: The separation seal is specifically a piston, the outer periphery of the piston is sleeved with a sealing ring, and the sealing ring is tightly attached to the inner wall of the tertiary cavity to form a sliding connection.

4. The self-sealing vacuum-breaking quick connection device according to claim 3, characterized in that: The clamping assembly includes a mounting column fixedly connected to the top surface of the piston, a mounting shaft protruding from the top of the mounting column, a clamping jaw on the mounting shaft, the mounting column extends into the secondary cavity to form a sliding connection, an annular groove is provided on the inner wall of the secondary cavity, a sealing ring is embedded in the annular groove, the sealing ring is sleeved on the mounting column to form a close connection, and the clamping jaw passes through the primary cavity to form a sliding connection.

5. The self-sealing vacuum-breaking quick connection device according to claim 4, characterized in that: The clamping claw includes a claw rod, which is sleeved on the mounting shaft. A plurality of claw heads are arranged on the top side of the claw rod. The plurality of claw heads are arranged in a circular array around the axis of the mounting shaft. A clamping opening is formed between the plurality of claw heads. The outer side of the claw head has a convex arc portion, and the convex arc portion transitions to the outer side surface of the claw rod. The convex arc portion is at least partially located outside the primary cavity.

6. The self-sealing vacuum-breaking quick connection device according to claim 4, characterized in that: A small hole is provided at the center of the top wall of the cap, and the small hole is the top opening of the ventilation cavity. A base B is provided at the bottom end of the cap, and the center hole of the base B is the bottom opening of the ventilation cavity.

7. The self-sealing vacuum-breaking quick connection device according to claim 6, characterized in that: The sealing top member includes a shaft rod, the top end of the shaft rod is connected to the sealing head through an expanding step, the bottom end of the shaft rod is connected to the small-diameter rod through a reducing step, a clamping block is protruded from the bottom end of the small-diameter rod, a spring is sleeved on the outer periphery of the shaft rod, the bottom end of the spring presses the base B, the top end of the spring presses the expanding step, and the clamping claw extends into the bottom opening of the ventilation cavity to clamp the clamping block.

8. The self-sealing vacuum-breaking quick connection device according to claim 6, characterized in that: A second annular groove is concavely provided on the inner surface of the top wall of the cap, a second sealing ring is embedded in the second annular groove, and the second sealing ring surrounds the outer circumference of the small hole.

9. The self-sealing vacuum-breaking quick connection device according to claim 7, characterized in that: The sealing head is any one of a spherical body, a conical body, a T-shaped body and a piston body.

10. The self-sealing vacuum-breaking quick connection device according to claim 6, characterized in that: The bottom end of the cap is provided with a flange outwardly, the outer periphery of the cap is sleeved with a sealing gasket, and the sealing gasket is overlapped on the flange.

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