A tee joint linkage air balance large flow vacuum generator

Abstract

The application provides a three-way linkage air balance large-flow vacuum generator applied to the field of vacuum generators, which comprises a shell, a left cover, a right cover, a valve body, a positive pressure interface, a negative pressure interface and a vacuum cover. The left cover and the right cover are respectively arranged on the two sides of the valve body, the vacuum cover is arranged below the valve body, the positive pressure interface and the negative pressure interface are arranged on the valve body, a power assembly comprises a vacuum electromagnetic valve and a vacuum breaking electromagnetic valve, the vacuum electromagnetic valve and the vacuum breaking electromagnetic valve are arranged in the left cover, the output ends of the vacuum electromagnetic valve and the vacuum breaking electromagnetic valve are connected with the valve body, a negative pressure assembly is used for generating negative pressure adsorption objects, and the technical problem that compressed air is shunted by an exhaust passage when the integrated vacuum generator breaks the vacuum at present and cannot quickly realize the breaking of the vacuum is solved.

Description

Technical Field

[0001] This application relates to the field of vacuum generator technology, and in particular to a high-flow-rate vacuum generator with three-way linkage and gas balance. Background Technology

[0002] A vacuum generator is a new type of efficient, clean, economical, and small vacuum component that uses a positive pressure air source to generate negative pressure. This makes it very easy and convenient to obtain negative pressure in places where compressed air is available or where both positive and negative pressure are required in a pneumatic system. Vacuum generators are widely used in industrial automation in fields such as machinery, electronics, packaging, printing, plastics, and robotics.

[0003] When adsorption needs to be released or vacuum needs to be broken, the breaking solenoid valve is energized, the breaking switch is separated from the vacuum breaking channel, the vacuum breaking channel is opened, and at the same time the air supply solenoid valve is de-energized, the main air passage is disconnected, and compressed air cannot enter the air supply chamber. At this time, the vacuum breaking channel has been opened, and all the compressed air enters the vacuum chamber, and the vacuum chamber is broken. However, when the above-mentioned integrated vacuum generator breaks the vacuum, the compressed air will be diverted by the exhaust channel, and the vacuum cannot be broken quickly. Utility Model Content

[0004] This application aims to solve the technical problem that when an integrated vacuum generator breaks a vacuum, the compressed air is diverted by the exhaust channel, which prevents the vacuum from being broken quickly. It provides a high-flow-rate vacuum generator with three-way linkage and air balance.

[0005] This application employs the following technical means to solve the technical problem:

[0006] A high-flow-rate vacuum generator with three-way linkage and gas balance includes:

[0007] The housing includes a left cover, a right cover, a valve body, a positive pressure port, a negative pressure port, and a vacuum chamber;

[0008] The left cover and the right cover are respectively located on both sides of the valve body, the vacuum cover is located below the valve body, and the positive pressure port and the negative pressure port are located on the valve body;

[0009] A power assembly, comprising a vacuum solenoid valve and a venting solenoid valve, wherein the vacuum solenoid valve and the venting solenoid valve are disposed inside the left cover, and the output ends of the vacuum solenoid valve and the venting solenoid valve are connected to the valve body.

[0010] A negative pressure component, which is used to generate negative pressure to adsorb objects.

[0011] Furthermore, the valve body is provided with a positive pressure pipe, a first positive pressure transmission pipe, a first flow channel chamber, a first piston, a negative pressure connecting pipe, a second flow channel chamber, a second piston, a third flow channel chamber, a hollow rod, and a negative pressure pipe;

[0012] The positive pressure pipe is connected to the first positive pressure transmission pipe, the first positive pressure transmission pipe is connected to the first flow channel chamber and the second flow channel chamber, the vacuum solenoid valve is connected to the first piston, the first piston is housed in the first flow channel chamber and moves within it, the first flow channel chamber is connected to the negative pressure connection pipe, the second flow channel chamber is connected to the third flow channel chamber, the second piston is located in the third flow channel chamber and moves within it, the second piston is connected to one end of the hollow rod, and the other end of the hollow rod is located on the negative pressure pipe.

[0013] Furthermore, the hollow rod has an interior space, and the hollow rod has a through hole at one end located on the second piston.

[0014] Furthermore, the hollow rod has a spring at one end of the negative pressure pipe.

[0015] Furthermore, a filter tube is provided inside the right cover, and the filter tube is located inside the negative pressure pipe.

[0016] Furthermore, the valve body is also provided with a cavitation channel, which is connected to the cavitation solenoid valve.

[0017] This application provides a high-flow-rate vacuum generator with three-way linkage and air balance, which has the following beneficial effects: A housing comprising a left cover, a right cover, a valve body, a positive pressure port, a negative pressure port, and a vacuum shroud; the left cover and the right cover are respectively located on both sides of the valve body, the vacuum shroud is located below the valve body, and the positive pressure port and the negative pressure port are located on the valve body; a power assembly comprising a vacuum solenoid valve and a cavitation solenoid valve, the vacuum solenoid valve and the cavitation solenoid valve being located inside the left cover, the output ends of the vacuum solenoid valve and the cavitation solenoid valve being connected to the valve body; a negative pressure assembly for generating negative pressure to adsorb objects; and a solution to the technical problem that in current integrated vacuum generators, compressed air is diverted by the exhaust channel during vacuum breaking, preventing rapid vacuum breaking. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a high-flow-rate vacuum generator with three-way linkage and gas balance according to an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the overall structure of a high-flow-rate vacuum generator with three-way linkage and gas balance according to an embodiment of this application;

[0020] Figure 3 This is a cross-sectional view of the overall structure of a high-flow-rate vacuum generator with three-way linkage and gas balance according to an embodiment of this application.

[0021] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0023] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] It should be noted that the terms "comprising," "including," and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses. Terms such as "first" and "second" in the claims, specification, and accompanying drawings of this application, as well as relational terms, are used merely to distinguish one entity / operation / object from another entity / operation / object, and do not necessarily require or imply any such actual relationship or order between these entities / operations / objects.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] Reference Appendix Figure 1-3 This is a schematic diagram of the structure of a high-flow-rate vacuum generator with three-way linkage gas balance in one embodiment of this application;

[0027] A high-flow-rate vacuum generator with three-way linkage and gas balance includes:

[0028] The housing includes a left cover 1, a right cover 6, a valve body 4, a positive pressure port 2, a negative pressure port 3, and a vacuum cover 5;

[0029] The left cover 1 and the right cover 6 are respectively located on both sides of the valve body 4, the vacuum cover 5 is located below the valve body 4, and the positive pressure port 2 and the negative pressure port 3 are located on the valve body 4.

[0030] The power assembly includes a vacuum solenoid valve 9 and a venting solenoid valve 8, which are located inside the left cover 1. The output ends of the vacuum solenoid valve 9 and the venting solenoid valve 8 are connected to the valve body 4.

[0031] A negative pressure component, which is used to generate negative pressure to adsorb objects.

[0032] In this embodiment, the valve body 4 is provided with a positive pressure pipe, a first positive pressure transmission pipe, a first flow channel chamber 127, a first piston 11, a negative pressure connecting pipe 13, a second flow channel chamber 15, a second piston 18, a third flow channel chamber 16, a hollow rod 19 and a negative pressure pipe 20.

[0033] The positive pressure pipe is connected to the first positive pressure transmission pipe, which is connected to the first flow channel chamber 127 and the second flow channel chamber 15. The vacuum solenoid valve 9 is connected to the first piston 11, which is housed and moves within the first flow channel chamber 127. The first flow channel chamber 127 is connected to the negative pressure connecting pipe 13. The second flow channel chamber 15 is connected to the third flow channel chamber 16. The second piston 18 moves within the third flow channel chamber 16. The second piston 18 is connected to one end of the hollow rod 19, and the other end of the hollow rod 19 is located on the negative pressure pipe 20.

[0034] The hollow rod 19 has a space inside, and the hollow rod 19 has a through hole 17 at one end located on the second piston 18.

[0035] The hollow rod 19 has a spring at one end of the negative pressure pipe 20.

[0036] The right cover 6 is equipped with a filter tube, which is located inside the negative pressure pipe 20.

[0037] Specifically,

[0038] First, in the operation of vacuum generator 14, the air pressure flow process of the object being adsorbed by negative pressure will be explained as follows:

[0039] Positive pressure enters the first positive pressure transmission pipe from the positive pressure port 2. At this time, the positive pressure gas will split into two streams. The first stream enters the first flow channel chamber 127. Because the vacuum solenoid valve 9 is in the normally open state, when the vacuum solenoid valve 9 is energized, there is no positive pressure on the left side of the first piston 11 in the first flow channel chamber 127. Instead, the positive pressure from the first stream squeezes the first piston 11 from right to left, causing the first piston 11 to be on the left side of the first flow channel chamber 127. The positive pressure from the first stream enters the negative pressure connecting pipe 13 and then enters the vacuum generator 14 to generate negative pressure. At this time, the second stream in the first positive pressure transmission pipe will enter the second flow channel chamber 15. Then, it enters the third flow channel chamber 16. When entering the third flow channel chamber 16, it is on the left side. Because the spring at the end of the negative pressure pipe 20 of the hollow rod 19 is in its original state, it pushes the second piston 18 against the left side of the third flow channel chamber 16. Therefore, the positive pressure entering the second piston 18 will be blocked by the sealing ring on the right side of the second piston 18 and can only enter through the through hole 17 of the hollow rod 19. Then, as the hollow rod 19 enters to the other end of the hollow rod 19, the positive pressure will generate a force that continuously pushes the second piston 18 against the left side, preventing the positive pressure from being released. Then, the negative pressure pipe 20 and the negative pressure interface 3 can continuously achieve the adsorption effect.

[0040] In this embodiment, the valve body 4 is further provided with a cavitation channel 10, which is connected to the cavitation solenoid valve 8.

[0041] Specifically,

[0042] During the process of negative pressure adsorption of objects, it is necessary to release the objects adsorbed by negative pressure. This requires generating an internal force that breaks through the void, and this requires a motion process, as follows:

[0043] When the positive pressure from the positive pressure port 2 enters the first positive pressure transmission pipe, it still has two branches: one enters the second flow channel chamber 15, and the other enters the first flow channel chamber 127. However, when entering the first flow channel chamber 127, because the vacuum solenoid valve 9 is normally open, the first piston 11 in the first flow channel chamber 127 has positive pressure on both its left and right sides, achieving a gas balance. When this gas balance is achieved, the first piston 11 will, due to its elasticity, block the opening into the negative pressure connection pipe 13. Therefore, negative pressure will not be generated.

[0044] Most importantly, when the venting solenoid valve 8 is energized, positive pressure enters the venting solenoid valve 8 from the first positive pressure connecting pipe and then exits from the venting channel 10. The other end of the venting channel 10 is connected to the left side of the third channel chamber 16. Therefore, the positive pressure of the venting channel 10 generates a force that moves the second piston 18 to the right in the third channel chamber 16. When the second piston 18 moves to the right, the positive pressure from the second branch to the second channel chamber 15 enters the third channel chamber 16 and exits from the second piston 18, the negative pressure pipe 20, and the negative pressure interface 3, thus achieving the purpose of internal venting.

[0045] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-flow-rate vacuum generator with three-way linkage and gas balance, characterized in that, include: The housing includes a left cover, a right cover, a valve body, a positive pressure port, a negative pressure port, and a vacuum chamber; The left cover and the right cover are respectively located on both sides of the valve body, the vacuum cover is located below the valve body, and the positive pressure port and the negative pressure port are located on the valve body; A power assembly, comprising a vacuum solenoid valve and a venting solenoid valve, wherein the vacuum solenoid valve and the venting solenoid valve are disposed inside the left cover, and the output ends of the vacuum solenoid valve and the venting solenoid valve are connected to the valve body. A negative pressure assembly, wherein the negative pressure assembly is used to generate negative pressure to adsorb objects; The valve body is provided with a positive pressure pipe, a first positive pressure transmission pipe, a first flow channel chamber, a first piston, a negative pressure connection pipe, a second flow channel chamber, a second piston, a third flow channel chamber, a hollow rod, and a negative pressure pipe; The positive pressure pipe is connected to the first positive pressure transmission pipe, the first positive pressure transmission pipe is connected to the first flow channel chamber and the second flow channel chamber, the vacuum solenoid valve is connected to the first piston, the first piston is housed in the first flow channel chamber and moves within it, the first flow channel chamber is connected to the negative pressure connection pipe, the second flow channel chamber is connected to the third flow channel chamber, the second piston is located in the third flow channel chamber and moves within it, the second piston is connected to one end of the hollow rod, and the other end of the hollow rod is located on the negative pressure pipe.

2. The high-flow-rate vacuum generator with three-way linkage and gas balance according to claim 1, characterized in that, The hollow rod has an interior space, and the hollow rod has a through hole at one end located on the second piston.

3. The high-flow-rate vacuum generator with three-way linkage and gas balance according to claim 1, characterized in that, The hollow rod has a spring at one end of the negative pressure pipe.

4. The high-flow-rate vacuum generator with three-way linkage and gas balance according to claim 1, characterized in that, The right cover is equipped with a filter tube, which is located inside the negative pressure pipe.

5. The high-flow-rate vacuum generator with three-way linkage and gas balance according to claim 1, characterized in that, The valve body is also provided with a cavitation channel, which is connected to the cavitation solenoid valve.

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