Vacuum generator with blowback function

Abstract

The utility model discloses a pneumatic machine, and particularly relates to a vacuum generator with a reverse blowing function. Comprising a combination valve body, the interior of the combination valve body is hollow to form a containing cavity, a nozzle is arranged on one side of the bottom of the containing cavity, a first sealing ring is arranged on the nozzle, a plug is arranged on one side of the top of the containing cavity, a switching valve is arranged on one side of the middle of the containing cavity, and a guide pipe and a silencer are arranged on the other side of the bottom of the containing cavity. A fifth sealing ring is arranged on the guide pipe, the nozzle, the guide pipe and the silencer are all arranged on the same horizontal line, and one side of the nozzle and one side of the silencer both protrude out of the combination valve body. The function of the vacuum generator and the function of the switching valve are fused together, more accurate vacuum control is achieved, the switching valve adapts to the rapidly-changing production rhythm, meanwhile, external gas circuit connection is effectively reduced, and then material consumption, energy consumption and maintenance cost are reduced.

Description

Technical Field

[0001] The utility model relates to the field of pneumatic machinery, in particular to a vacuum generator with back-blowing gas. Background Art

[0002] With the continuous improvement of the level of industrial automation, the requirements for vacuum systems and switching valves are becoming increasingly stringent. When existing equipment uses integrated suction cups in dusty environments, in order to reduce manual maintenance, a vacuum system is usually added to reduce dust accumulation inside the integrated suction cups, thereby extending the service life. The existing vacuum system has slow response time, complex maintenance, and large size. However, when the matching backflush device switching valve is connected to the vacuum generator gas circuit, the pipeline is relatively cumbersome, and the gas circuit connection of multiple devices is relatively complicated, and the effect speed is slow. Summary of the invention

[0003] The utility model aims to provide a vacuum generator with back-blowing gas to solve the problems of slow response time, complex maintenance and bulky size of the existing vacuum system. However, when the matching back-blowing device switching valve is connected to the vacuum generator gas circuit, the pipeline is relatively cumbersome, the gas circuit connection of multiple devices is relatively complicated, and the effect speed is slow.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A vacuum generator with back-blowing gas is provided, comprising a combination valve body, wherein the interior of the combination valve body is hollow to form a accommodating chamber, a nozzle is arranged on one side of the bottom of the accommodating chamber, a first sealing ring is arranged on the nozzle, a plug is arranged on one side of the top of the accommodating chamber, a switching valve is arranged on one side of the middle of the accommodating chamber, a conduit and a muffler are arranged on the other side of the bottom of the accommodating chamber, a fifth sealing ring is arranged on the conduit, the nozzle, the conduit and the muffler are all arranged on the same horizontal line, and one side of the nozzle and the muffler both protrude from the combination valve body.

[0006] As a preferred solution of a vacuum generator with back-blowing gas, the switching valve includes a valve core, a spring, a second sealing ring, a sleeve, a third sealing ring, a fourth sealing ring and an end cover. The valve core is slidably arranged in the middle of the accommodating chamber through the sleeve, and an air flow channel connected to the accommodating chamber is arranged in the valve core. The second sealing ring is arranged on one side of the valve core, and the third sealing ring is arranged on the other side of the valve core. The end cover is arranged at one end of the valve core, the spring is arranged between the valve core and the sleeve, and one side of the end cover protrudes from the combination valve body. The valve core can slide on one side of the sleeve through the second sealing ring or the third sealing ring to close the single-sided air path.

[0007] As a preferred solution of a vacuum generator with back-blowing, the combination valve body is provided with a first threaded interface, a second threaded interface and a third threaded interface connected to the accommodating chamber, the first threaded interface and the third threaded interface are located on both sides of the combination valve body and are respectively connected to the vacuum air path and the blowing air path pipeline, and the second threaded interface is located on the side of the combination valve body and is connected to the integrated suction cup pipeline.

[0008] As a preferred solution of a vacuum generator with back-blowing gas, mounting holes are symmetrically opened on one side of the combination valve body, and the mounting holes are located on both sides of the second thread interface.

[0009] Beneficial effects of the utility model:

[0010] The vacuum generator function is integrated with the switching valve function to achieve more precise vacuum control and adapt to the rapidly changing production rhythm. At the same time, it effectively reduces external gas line connections, thereby reducing material consumption, energy consumption and maintenance costs. The switching valve can automatically control the opening and closing of the vacuum system, so that the vacuum generator can be started or stopped according to actual needs, which improves the degree of automation of the system and optimizes the gas path, making it more beautiful and easier to maintain.

[0011] The nozzle, duct and muffler of the vacuum generator are all set at the same horizontal line to ensure the shortest airflow path, reduce energy loss, improve the efficiency of vacuum generation, reduce unnecessary startup and operation time, reduce the wear of the vacuum generator, extend its service life, simplify the structure of the system, and facilitate maintenance and troubleshooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work.

[0013] Figure 1 It is a three-dimensional structural schematic diagram of a vacuum generator with back-blowing gas described in an embodiment of the utility model.

[0014] Figure 2 It is a schematic cross-sectional structural diagram of a vacuum generator with back-blowing gas described in one embodiment of the utility model.

[0015] In the figure:

[0016] 1. Combination valve body; 2. Nozzle; 3. First sealing ring; 4. Plug; 5. Valve core; 6. Spring; 7. Second sealing ring; 8. Sleeve; 9. Third sealing ring; 10. Fourth sealing ring; 11. End cover; 12. Conduit; 13. Fifth sealing ring; 14. Muffler. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0018] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0019] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0020] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1-2As shown, the utility model provides a technical solution: a vacuum generator with back-blowing gas, comprising a combination valve body 1, the combination valve body 1 is hollow inside to form a accommodating chamber, the accommodating chamber is composed of two connected T-shaped channels, one of which is located at the bottom of the combination valve body 1, and the other T-shaped channel is located at the upper right of the bottom T-shaped channel in the combination valve body 1 and is connected to the bottom T-shaped channel in the combination valve body 1, a first thread interface connected to the accommodating chamber is provided at the bottom of the left side of the combination valve body 1, a nozzle 2 is installed in the first thread interface, the nozzle 2 is connected to the high-pressure air circuit controlling the vacuum air circuit through a pipeline, a first sealing ring 3 is clamped on the right side of the nozzle 2, the nozzle 2 is sealed at the connection between the nozzle 2 and the combination valve body 1 through the first sealing ring 3, the left side of the nozzle 2 protrudes from the combination valve body 1, a plug 4 is installed in the left channel opening at the top of the accommodating chamber, the vacuum air circuit on the left side of the combination valve body 1 is sealed by the plug 4, and can be used to open and clean the dust sucked in the interior during maintenance, a third thread interface connected to the accommodating chamber is provided at the top of the right side of the combination valve body 1, and a switch is installed in the accommodating chamber on the left side of the third thread interface The switch valve is connected with the high-pressure gas circuit that controls the blowing gas circuit through a pipeline. A muffler 14 is installed at the right channel opening at the bottom of the accommodating chamber. The right side of the muffler 14 protrudes from the combined valve body 1. A conduit 12 is installed in the middle of the bottom of the accommodating chamber. The conduit 12 is located between the nozzle 2 and the muffler 14. A fifth sealing ring 13 is clamped in the middle of the outer side of the conduit 12. The conduit 12 is further fixed in the channel in the middle of the bottom of the accommodating chamber through the fifth sealing ring 13. The nozzle 2, the conduit 12 and the muffler 14 are all installed on the same horizontal line to ensure that the airflow path is the shortest and reduce To reduce energy loss and improve the efficiency of vacuum generation, a second thread interface connected to the accommodating cavity is opened in the middle of the top of the combination valve body 1, and the second thread interface is connected to the integrated suction cup through a pipeline. The second thread interface is perpendicular to the first thread interface and the third thread interface and is connected to each other, which is convenient for changing the air path and reducing dust entry. Mounting holes are symmetrically opened on the upper front side of the combination valve body 1. There are two mounting holes, which are located on the left and right sides of the second thread interface, and the mounting hole on the left is located on the right side of the plug 4. The mounting holes on both sides pass through the combination valve body 1 to install and fix the combination valve body 1.

[0022] like Figure 2As shown, the switching valve includes a valve core 5, a spring 6, a second sealing ring 7, a sliding sleeve 8, a third sealing ring 9, a fourth sealing ring 10 and an end cover 11. The sliding sleeve 8 is clamped in the middle of the T-shaped channel on the right side of the accommodating chamber. The valve core 5 is slidably installed in the T-shaped channel on the right side of the accommodating chamber through the sliding sleeve 8. An air flow channel connected to the accommodating chamber is opened in the valve core 5. The second sealing ring 7 is installed on the left end of the outer side of the valve core 5, the third sealing ring 9 is installed on the right end of the outer side of the valve core 5, the end cover 11 is installed on the right side of the valve core 5, the fourth sealing ring 10 is installed on the left side of the end cover 11, and the end cover 11 is connected to the The connection between the end cover 11 and the combination valve body 1 is further sealed through the fourth sealing ring 10. The left side of the end cover 11 is located in the third tooth interface, and the right side of the end cover 11 protrudes from the combination valve body 1. A spring 6 is sleeved between the right side of the valve core 5 and the left side of the sliding sleeve 8. The valve core 5 can move left and right on the sliding sleeve 8 under the action of the spring 6 to close the air paths at both ends of the left and right ends through the second sealing ring 7 and the third sealing ring 9. Under normal conditions, the switching valve supports the valve core 5 under the action of the spring 6 to compress the third sealing ring 9 so that it fits tightly with the inner side of the end cover 11, thereby forming an air hole seal to form a closed state.

[0023] Working principle: When vacuum picking is performed, the high-pressure gas in the vacuum air circuit is opened, and the high-pressure gas enters the nozzle 2 and then enters the conduit 12. The noise generated is reduced through the muffler 14, thereby generating negative pressure. At this time, the high-pressure air circuit that controls the blowing air circuit is in a closed state, and the elastic force of the spring 6 on the valve core 5 is greater than the pressure generated by the negative pressure, so that the air circuit of the valve core 5 and the end cover 11 remain in a closed state, ensuring that the air circuit from the first tooth interface on the left side of the accommodating chamber to the second tooth interface is in a connected and sealed state. The negative pressure generated by the left side of the accommodating chamber enables the integrated suction cup to obtain the corresponding negative pressure, so that the integrated suction cup completes the picking action. When the integrated suction cup completes the picking and the motion mechanism moves the product to the specified position, the vacuum generated by the control vacuum connected to the first tooth interface The air circuit is closed, and the air circuit of the blowing function of the third tooth interface is opened at the same time. The compressed air enters the third tooth interface through the pipeline to increase its internal pressure. Under the action of air pressure, the valve core 5 moves to the left and compresses the spring 6 until the valve core 5 blocks the left channel in the middle of the accommodating chamber. The high-pressure gas passes through the air flow channel in the valve core 5 connected to the accommodating chamber to the left side of the switching valve, and then enters the integrated suction cup through the second tooth interface to complete the blowing action. Since the action force of the high-pressure air pressure is always greater than the elastic force of the spring 6, the valve core 5 always keeps the blowing air circuit unobstructed. When the blowing is completed, the switching valve returns to its normal state under the action of the elastic force of the spring 6, and then pushes the valve core 5 to move to the right to compress the third sealing ring 9 so that it fits tightly with the inner side of the end cover 11, thereby restoring the switching valve to a closed state.

[0024] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A vacuum generator with back-blowing gas, characterized in that: The invention comprises a combination valve body (1), wherein the combination valve body (1) is hollow inside to form a receiving chamber, a nozzle (2) is arranged on one side of the bottom of the receiving chamber, a first sealing ring (3) is arranged on the nozzle (2), a plug (4) is arranged on one side of the top of the receiving chamber, a switching valve is arranged on one side of the middle of the receiving chamber, a conduit (12) and a muffler (14) are arranged on the other side of the bottom of the receiving chamber, a fifth sealing ring (13) is arranged on the conduit (12), the nozzle (2), the conduit (12) and the muffler (14) are arranged on the same horizontal line, and one side of the nozzle (2) and the muffler (14) protrudes from the combination valve body (1).

2. The vacuum generator with back-blowing according to claim 1, characterized in that: The switching valve comprises a valve core (5), a spring (6), a second sealing ring (7), a sliding sleeve (8), a third sealing ring (9), a fourth sealing ring (10) and an end cover (11); the valve core (5) is slidably arranged in the middle of the accommodating chamber via the sliding sleeve (8); an air flow passage communicating with the accommodating chamber is arranged in the valve core (5); the second sealing ring (7) is arranged on one side of the valve core (5); the third sealing ring (9) is arranged on the other side of the valve core (5); the end cover (11) is arranged at one end of the valve core (5); the spring (6) is arranged between the valve core (5) and the sliding sleeve (8); one side of the end cover (11) protrudes from the combination valve body (1); the valve core (5) can slide on one side on the sliding sleeve (8) to pass through the second sealing ring (7) or the third sealing ring (9) to seal the single-side air passage.

3. The vacuum generator with back-blowing gas according to claim 1, characterized in that: The combination valve body (1) is provided with a first threaded interface, a second threaded interface and a third threaded interface connected to the accommodating cavity; the first threaded interface and the third threaded interface are located on both sides of the combination valve body (1) and are respectively connected to the vacuum air path and the blowing air path pipeline; the second threaded interface is located on the side of the combination valve body (1) and is connected to the integrated suction cup pipeline.

4. The vacuum generator with back-blowing according to claim 3, characterized in that: One side of the combination valve body (1) is symmetrically provided with mounting holes, the mounting holes being located on both sides of the second thread interface.

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