Exhaust valve assembly

Abstract

The utility model discloses an exhaust valve assembly which comprises a valve body and a suction fan, an air suction opening and an air suction opening are directly or indirectly arranged on the valve body, the air suction opening corresponds to the suction fan, an air chamber is fixedly or integrally arranged on the valve body, an air cavity is arranged in the air chamber, an air suction cavity is arranged in the valve body, the air suction opening corresponds to the air chamber, and the air suction opening corresponds to the air chamber. A ventilation hole for communicating the air cavity with the air suction cavity is formed between the air cavity and the air suction cavity, the air chamber is further provided with a first execution piece used for opening and closing the ventilation hole, the valve body is provided with an air passing piece used for communicating the outside with the air suction cavity, and a channel hole for communicating the air passing piece with the valve body is formed between the air passing piece and the valve body. According to the suction ventilator, shutdown operation is not needed, the suction ventilator can operate continuously, when the air cavity is closed, the air passing piece is communicated with the valve body to achieve continuous ventilation, normal operation of the suction ventilator is guaranteed, intermittent opening and closing of the suction ventilator are not needed, and the response speed is high.

Description

Technical Field

[0001] The utility model relates to the technical field of control valves, in particular to an exhaust valve component. Background Art

[0002] Existing pneumatic clamps, especially pneumatic suction cups, need to generate negative pressure vacuum suction through a negative pressure device in order to adsorb the surface of the workpiece. The current negative pressure device includes a suction fan and an air pipe. The air pipe is connected to the suction cup. The suction fan is started to extract the air between the suction cup and the workpiece to form a negative pressure vacuum state. The suction cup moves the workpiece from one station to the other. During this process, the suction fan needs to be repeatedly started and shut down to complete the process of adsorption and release of the workpiece by the suction cup. The suction fan does not run continuously, and each start-up takes time, which will cause the suction cup to vacuum slowly. In another case, the suction fan continues to run, but when the airway at the suction cup is closed, the suction fan continues to suck air in a closed chamber, which will affect the service life of the suction fan and cause malfunctions. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide an exhaust valve assembly.

[0004] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: an exhaust valve assembly, comprising a valve body and a suction fan, the valve body being directly or indirectly provided with an exhaust port and an air suction port, the air suction port corresponding to the suction fan, the exhaust port being connected to the suction cup through an air pipe, an air chamber being fixed or integrally provided on the valve body, an air cavity being provided in the air chamber, a suction cavity being provided in the valve body, the exhaust port corresponding to the air chamber, an air vent being provided between the air cavity and the suction cavity for connecting the two, a first actuator being further provided on the air chamber for opening and closing the vent, an air passing member being provided on the valve body for connecting the outside world and the suction cavity, a channel hole being provided between the air passing member and the valve body for connecting the two, and a second actuator being provided on the valve body for opening and closing the channel hole.

[0005] As a preferred technical solution of the utility model, the air passing part includes an air passing duct, one end of which is connected to the valve body, and the other end of which is fixedly or integrally provided with an air passing tube, and the outer wall of the air passing tube is provided with a plurality of air passing holes.

[0006] As a preferred technical solution of the utility model, the air passing member and the second actuator are symmetrically arranged on both sides of the valve body, the second actuator is a telescopic member and the telescopic end of the telescopic member is provided with a second baffle for opening and closing the channel hole.

[0007] As a preferred technical solution of the utility model, an air suction pipe is arranged on one side of the valve body adjacent to the air passing member.

[0008] As a preferred technical solution of the present utility model, the first actuator is a telescopic member and a first baffle for opening and closing the vent hole is provided at the telescopic end of the telescopic member.

[0009] As a preferred technical solution of the present utility model, the first actuator and the second actuator are any one of an electric cylinder, a pneumatic cylinder or a hydraulic cylinder.

[0010] As a preferred technical solution of the utility model, the air chamber includes a seat body fixed or integrally arranged on the valve body, the air cavity is arranged in the seat body, the vent is arranged at the lower end of the seat body, and the upper end of the seat body is provided with a ventilation hole coaxially arranged with the vent. The first baffle plate has a first position to close the ventilation hole and a second position to close the ventilation hole under the drive of the first actuator. An exhaust pipe is arranged on one side of the seat body. When the first baffle plate is in the first position, the exhaust port and the vent are connected. When the first baffle plate is in the second position, the exhaust hole and the ventilation hole are connected.

[0011] As a preferred technical solution of the utility model, the diameter of the first baffle is larger than the vent hole and the air exchange hole, and there is a ventilation gap between the first baffle and the inner wall of the seat body for gas to pass through.

[0012] As a preferred technical solution of the utility model, the air chamber also includes a cover body located above the seat body, the first actuator is arranged directly above the cover body, an air inlet cavity is arranged in the cover body, and an air inlet hole connected to the air inlet cavity is arranged on one side of the cover body.

[0013] As a preferred technical solution of the utility model, the seat bodies are provided in plurality, and the air chamber comprises a cover body for closing the upper end openings of the plurality of seat bodies or a plurality of covers for closing the seat bodies respectively.

[0014] To sum up, the utility model has the beneficial effects: there is no need to stop the machine, and the suction fan can run continuously. When the air vent is closed, the air pass piece is connected to the valve body to realize continuous ventilation, thereby ensuring the normal operation of the suction fan. There is no need to intermittently open and close the suction fan, and the response speed is fast. When the suction cup needs to adsorb the workpiece, the first actuator opens the air vent to connect the air cavity, the suction cavity and the exhaust port, and the second actuator closes the channel hole of the air pass piece. The exhaust fan can vacuum the suction cup to form a negative pressure, and then adsorb the workpiece. When the suction cup needs to be released from the adsorption state, the air vent can still be in an open state, and the channel hole of the air pass piece can be directly opened by the second actuator to release the suction cup from the adsorption state. Alternatively, the channel hole of the air pass piece is closed under the action of the second actuator, and the first actuator closes the air vent. The exhaust port can quickly restore the suction cup to normal air pressure through the air exchange hole at the upper end of the air chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 It is a cross-sectional view of AA of the utility model;

[0018] Figure 4 It is a cross-sectional view of BB of the present utility model.

[0019] Figure numerals: 1. valve body; 2. air inlet; 3. exhaust port; 4. air suction port; 5. air chamber; 6. air cavity; 7. air suction cavity; 8. air vent; 9. first actuator; 10. air passing member; 11. channel hole; 12. second actuator; 13. air duct; 14. air tube; 15. air passing hole; 16. second baffle plate; 17. air suction duct; 18. first baffle plate; 19. seat body; 20. air exchange hole; 21. exhaust duct; 22. air exchange gap; 23. cover body; 24. air inlet cavity. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0021] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0022] like Figures 1 to 4An exhaust valve assembly is shown, comprising a valve body 1 and a suction fan (not shown in the figure). An air suction port 3 and an air suction port 4 are directly or indirectly provided on the valve body 1. The air suction port 4 corresponds to the suction fan. The air suction port 3 is connected to a suction cup (not shown in the figure) through an air pipe. How the air suction port 3 is connected to the pneumatic suction cup is not an improvement point of the present application. This is a prior art and is not specifically described. An air chamber 5 is fixedly or integrally provided on the valve body 1. An air cavity 6 is provided in the air chamber 5. A suction cavity 7 is provided in the valve body 1. The air suction port 3 corresponds to the air chamber 5. An air vent 8 is provided between the air cavity 6 and the suction cavity 7 to connect the two. The air chamber 5 also has a plurality of air chambers 5, each of which has an air chamber 6 disposed therein. A first actuator 9 for opening and closing the air vent 8 is provided, a wind pass piece 10 for connecting the outside and the air suction chamber 7 is provided on the valve body 1, a channel hole 11 is provided between the wind pass piece 10 and the valve body 1 to connect the two, and a second actuator 12 is provided on the valve body 1 for opening and closing the channel hole 11. In this embodiment, the first actuator 9 and the second actuator 12 adopt any one of electric cylinders, air cylinders or hydraulic cylinders, or other components with lifting functions. The pneumatic suction cup in this embodiment is actually sold, and the suction cup is a whole suction cup component, not just an adsorption component at the end of the suction cup component. This is a prior art, so it is not elaborated in detail.

[0023] The air passing part 10 includes an air passing duct 13, one end of which is connected to the valve body 1, and the other end of the air passing duct 13 is fixed or integrally provided with an air passing tube 14, and the outer wall of the air passing tube 14 is evenly distributed with a plurality of air passing holes 15. In this embodiment, the air passing duct 13 is preferably a curved tube, but a straight tube may also be used.

[0024] The air passing member 10 and the second actuator 12 are symmetrically arranged on both sides of the valve body 1. The second actuator 12 is a telescopic member and a second baffle 16 for opening and closing the channel hole 11 is arranged at the telescopic end of the telescopic member. An air suction pipe 17 is arranged on one side of the valve body 1 adjacent to the air passing member 10.

[0025] The first actuator 9 is a telescopic member, and a first baffle 18 for opening and closing the vent hole 8 is provided at the telescopic end of the telescopic member. The first baffle 18 is preferably circular, and may also be square or irregular in shape.

[0026] The air chamber 5 includes a seat body 19 fixed or integrally arranged on the valve body 1, the seat body 19 is provided with the air cavity 6, the vent hole 8 is arranged at the lower end of the seat body 19, and the upper end of the seat body 19 is provided with a ventilation hole 20 coaxially arranged with the vent hole 8. The first baffle plate 18 has a first position to close the ventilation hole 20 and a second position to close the ventilation hole 8 under the drive of the first actuator 9. An exhaust pipe 21 is provided on one side of the seat body 19. When the first baffle plate 18 is in the first position, the exhaust port 3 and the vent hole 8 are connected. When the first baffle plate 18 is in the second position, the exhaust hole and the ventilation hole 20 are connected.

[0027] The diameter of the first baffle plate 18 is larger than the vent hole 8 and the air exchange hole 20 , and there is an air exchange gap 22 between the first baffle plate 18 and the inner wall of the seat body 19 for gas to pass through.

[0028] The air chamber 5 further includes a cover body 23 located above the seat body 19 . The first actuator 9 is arranged directly above the cover body 23 . An air inlet cavity 24 is arranged in the cover body 23 . An air inlet hole 2 communicating with the air inlet cavity 24 is arranged on one side of the cover body 23 .

[0029] There are a plurality of seat bodies 19 , and the air chamber 5 includes a cover body 23 for closing the upper end openings of the plurality of seat bodies 19 or a plurality of cover bodies 23 that close the seat bodies 19 respectively.

[0030] Working principle: There is no need to stop the machine, and the suction fan can run continuously. When the air vent 8 is closed, the air passage piece 10 is connected with the valve body 1 to realize continuous ventilation, thereby ensuring the normal operation of the suction fan. There is no need to intermittently open and close the suction fan, and the response speed is fast. When the suction cup needs to adsorb the workpiece, the first actuator 9 opens the air vent 8 to connect the air cavity 6, the suction cavity 7 and the exhaust port 3, and the second actuator 12 closes the channel hole 11 of the air passage piece 10. The exhaust fan can vacuum the suction cup to form a negative pressure, and then adsorb the workpiece. When the suction cup needs to be released from the adsorption state, the air vent 8 can still be in the open state, and the channel hole 11 of the air passage piece 10 is directly opened by the second actuator 12 to release the suction cup from the adsorption state, or the channel hole 11 of the air passage piece 10 is closed under the action of the second actuator 12, and the first actuator 9 closes the air vent 8, and the exhaust port 3 can quickly restore the suction cup to normal air pressure through the air exchange hole 20 at the upper end of the air chamber 5.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the utility model, and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An exhaust valve assembly, comprising a valve body (1) and a suction fan, wherein the valve body (1) is directly or indirectly provided with an air suction port (3) and an air suction port (4), wherein the air suction port (4) corresponds to the suction fan, and the air suction port (3) is connected to a suction cup through an air pipe, wherein: An air chamber (5) is fixed or integrally provided on the valve body (1), an air cavity (6) is provided in the air chamber (5), an air suction cavity (7) is provided in the valve body (1), the air outlet (3) corresponds to the air chamber (5), an air vent (8) is provided between the air cavity (6) and the air suction cavity (7) to connect the two, a first actuator (9) for opening and closing the air vent (8) is also provided on the air chamber (5), an air passage (10) for connecting the outside world and the air suction cavity (7) is provided on the valve body (1), a channel hole (11) is provided between the air passage (10) and the valve body (1) to connect the two, and a second actuator (12) is also provided on the valve body (1) to open and close the channel hole (11).

2. The exhaust valve assembly according to claim 1, characterized in that: The air passing member (10) comprises an air passing duct (13), one end of the air passing duct (13) is connected to the valve body (1), the other end of the air passing duct (13) is fixedly or integrally provided with an air passing cylinder (14), and the outer wall of the air passing cylinder (14) is provided with a plurality of air passing holes (15).

3. The exhaust valve assembly according to claim 1, characterized in that: The air passing member (10) and the second actuator (12) are symmetrically arranged on both sides of the valve body (1); the second actuator (12) is a telescopic member and a second baffle (16) for opening and closing the channel hole (11) is arranged at the telescopic end of the telescopic member.

4. The exhaust valve assembly according to claim 3, characterized in that: An air suction pipe (17) is provided on one side of the valve body (1) adjacent to the air passing member (10).

5. The exhaust valve assembly according to claim 1, characterized in that: The first actuator (9) is a telescopic member, and a first baffle (18) for opening and closing the vent hole (8) is provided at the telescopic end of the telescopic member.

6. The exhaust valve assembly according to claim 3, 4 or 5, characterized in that: The first actuator (9) and the second actuator (12) are any one of electric cylinders, pneumatic cylinders or hydraulic cylinders.

7. The exhaust valve assembly according to claim 5, characterized in that: The air chamber (5) comprises a seat body (19) fixed or integrally arranged on the valve body (1), the air cavity (6) being arranged in the seat body (19), the air hole (8) being arranged at the lower end of the seat body (19), the air exchange hole (20) being arranged coaxially with the air hole (8) being arranged at the upper end of the seat body (19), the first baffle plate (18) having a first position for closing the air exchange hole (20) and a second position for closing the air hole (8) under the drive of the first actuator (9), an exhaust pipe (21) being arranged on one side of the seat body (19), the exhaust port (3) and the air hole (8) being connected when the first baffle plate (18) is in the first position, and the exhaust hole and the air exchange hole (20) being connected when the first baffle plate (18) is in the second position.

8. The exhaust valve assembly according to claim 7, characterized in that: The diameter of the first baffle (18) is larger than the vent hole (8) and the air exchange hole (20), and there is an air exchange gap (22) between the first baffle (18) and the inner wall of the seat body (19) for gas to pass through.

9. The exhaust valve assembly according to claim 7 or 8, characterized in that: The air chamber (5) further comprises a cover body (23) located above the seat body (19); the first actuator (9) is arranged directly above the cover body (23); an air inlet cavity (24) is arranged in the cover body (23); and an air inlet hole (2) communicating with the air inlet cavity (24) is arranged on one side of the cover body (23).

10. The exhaust valve assembly according to claim 7 or 8, characterized in that: The seat bodies (19) are provided in plurality, and the air chamber (5) comprises a cover body (23) for closing the upper end openings of the plurality of seat bodies (19) or a plurality of cover bodies (23) for closing the seat bodies (19) respectively.

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