Composite integrated vacuum generator

Abstract

The utility model discloses a composite type integrated vacuum generator which comprises a first shell, a second shell and a third shell which are sequentially connected in the longitudinal direction, a vacuum pilot valve and a breaking pilot valve are arranged on the first shell, and a first transverse air channel, a first vacuum generating air channel and a first vacuum breaking air channel which are in through connection are arranged in the first shell. One end of the first transverse air channel is connected with a high-pressure air pipe connector, a first longitudinal seat valve is arranged in the vacuum generation air channel, and a second longitudinal seat valve is arranged in the vacuum breaking air channel. A second transverse air channel and a second vacuum breaking air channel are arranged in the second shell, a vacuum generating pipe is arranged in the second transverse air channel, and one end of the second transverse air channel is connected with the silencer; a vacuum cavity and a filter cavity which are communicated are transversely arranged in the third shell, one end of the filter cavity is connected with a vacuum gas pipe joint, and the gas channels are mutually matched and communicated. According to the utility model, the response time of adsorbing a product is prolonged, and the use failure rate is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum generators, and particularly relates to a composite integrated vacuum generator. Background Art

[0002] The working principle of a vacuum generator is to use a nozzle to eject compressed air at high speed to form a jet flow at the outlet of the nozzle, generating an entrainment flow. Under the entrainment action, the air around the outlet of the nozzle is continuously sucked away, reducing the pressure in the adsorption cavity below atmospheric pressure to form a certain degree of vacuum. It is often used to connect a suction cup to achieve certain special adsorption purposes. With the development of automation, integrated vacuum generators have gradually become the mainstream. Such products generally integrate a vacuum valve and a break valve, and can achieve the switching between vacuum and vacuum breaking without external solenoid valve control.

[0003] The patent with the application number 202221668902.9 discloses a vacuum generator, which is designed with the spool placed horizontally and the vacuum generating pipe placed vertically. In the opinions of use and market feedback, the following problems are found:

[0004] 1. For the design with the spool placed horizontally, end caps need to be installed at both ends of the housing. Although this method is convenient for maintenance, when there is a problem with the sealing of the end caps, it will cause air leakage in the air circuit, especially in the case of micro-leakage, and it is difficult to find the problem point.

[0005] 2. For the design with the vacuum generating pipe placed vertically, since two pipes are required to connect the vacuum cavity at the vacuum generating pipe, and in order to ensure the overall appearance, the vertical design results in too large a cavity size of the vacuum cavity, thus increasing the response time of the adsorbed product. Summary of the Invention

[0006] The technical problem to be solved by the utility model is to provide a composite integrated vacuum generator, which improves the response time of the adsorbed product and effectively reduces the usage failure rate.

[0007] To solve the above technical problem, the utility model provides a composite integrated vacuum generator, which includes a first housing, a second housing, and a third housing connected in sequence along the longitudinal direction. A vacuum pilot valve and a break pilot valve are arranged on the first housing. A first transverse air passage, a first vacuum generating air passage, and a first vacuum breaking air passage are arranged in the first housing in a through connection. One end of the first transverse air passage is connected to a high-pressure air pipe joint. A first longitudinally arranged spool valve is arranged in the vacuum generating air passage, and a second longitudinally arranged spool valve is arranged in the vacuum breaking air passage;

[0008] A second transverse air passage and a second vacuum breaking air passage are arranged in the second housing. A vacuum generating pipe is arranged in the second transverse air passage, and one end of the second transverse air passage is connected to a silencer;

[0009] A vacuum chamber and a filtration chamber are horizontally arranged and connected through the third housing. A filter element is arranged in the filtration chamber, and one end of the filtration chamber is connected to a vacuum pipe joint.

[0010] The first horizontal air passage is connected through to the air inlets of a vacuum pilot valve and a breaking pilot valve. The first vacuum generating air passage is connected through to the air outlet of the vacuum pilot valve and the second horizontal air passage. The first vacuum breaking air passage is connected through to the air outlet of the breaking pilot valve and the second vacuum breaking air passage. A negative pressure port is arranged between the vacuum chamber and the second horizontal air passage, and a rubber cover plate is arranged on the negative pressure port. A high pressure port is arranged between the vacuum chamber and the second vacuum breaking air passage.

[0011] Furthermore, a digital display pressure switch is also arranged on one side of the second housing.

[0012] Furthermore, the vacuum generating pipe includes a spray pipe, a primary diffuser pipe, and a secondary diffuser pipe which are arranged in sequence.

[0013] Furthermore, a breaking flow regulating valve connected to the second vacuum breaking air passage is arranged on the second housing.

[0014] Furthermore, sealing washers are arranged between the first housing, the second housing, and the third housing.

[0015] Furthermore, the first housing and the second housing are connected through a buckle assembly and a plug pin.

[0016] Furthermore, the silencer is plugged on one side of the second housing and fixed through a plug head pin.

[0017] Furthermore, the second housing and the third housing are connected through an insertion limiting member and a hook assembly. The hook assembly includes a horizontal hook arranged on the second housing and a clamping convex portion arranged on the third housing. An insertion plate groove is also arranged on the third housing, and a housing plug pin is arranged in the insertion plate groove. One end of the housing plug pin is provided with an abutting inclined surface, and the other end is provided with a limiting protrusion. The limiting protrusion cooperates with the plug head pin to limit the housing plug pin from coming out, and the abutting inclined surface is used for extruding the horizontal hook to deform.

[0018] Advantages of the present utility model:

[0019] The first vertical seat valve and the second vertical seat valve are arranged in the first horizontal air passage in an embedded manner. The integrated structure has a small volume, and there is no need to use an end cover for closing, which simplifies the assembly steps and also ensures the stability in use.

[0020] The setting direction of the vacuum chamber is the same as that of the vacuum generating tube and they are attached to each other below. This design can minimize the volume of the vacuum chamber while ensuring the appearance consistency, thereby reducing the response time for adsorbing products. Description of the Drawings

[0021] Figure 1 is the overall structural schematic diagram of the present utility model;

[0022] Figure 2 is the cross-sectional structural schematic diagram of the present utility model;

[0023] Figure 3 is the exploded assembly schematic diagram of the second housing and the third housing of the present utility model;

[0024] Figure 4 is the structural schematic diagram of the bottom of the second housing of the present utility model;

[0025] Figure 5 is the structural schematic diagram of the present utility model at the hook assembly. Detailed Embodiments

[0026] The present utility model will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the embodiments given are not intended to limit the present utility model.

[0027] Refer to Figure 1 and Figure 2As shown in the figure, an embodiment of the composite integrated vacuum generator of the present utility model includes a first housing 1, a second housing 2, and a third housing 3 connected in sequence along the longitudinal direction. A vacuum pilot valve 4 and a destruction pilot valve 5 are provided on the first housing. A first transverse air passage 6, a first vacuum generation air passage 7, and a first vacuum destruction air passage 8 are provided in the first housing and are connected through. One end of the first transverse air passage is connected to a high-pressure air pipe joint 9. A first longitudinally arranged seat valve 10 is provided in the vacuum generation air passage, and a second longitudinally arranged seat valve 11 is provided in the vacuum destruction air passage; A second transverse air passage 12 and a second vacuum destruction air passage 121 are provided in the second housing. A vacuum generation pipe 13 is provided in the second transverse air passage, and one end of the second transverse air passage is connected to a silencer 14; A vacuum chamber 15 and a filter chamber 16 are provided horizontally and connected through in the third housing. A filter element is provided in the filter chamber, and one end of the filter chamber is connected to a vacuum air pipe joint 17; The first transverse air passage is connected through to the air inlets of the vacuum pilot valve and the destruction pilot valve. The first vacuum generation air passage is connected through to the air outlet of the vacuum pilot valve and the second transverse air passage. When the vacuum pilot valve works, the compressed air in the first transverse air passage can be introduced into the first longitudinally arranged seat valve to trigger the action of the first longitudinally arranged seat valve. When the destruction pilot valve works, the compressed air in the first transverse air passage can be introduced into the second longitudinally arranged seat valve to trigger the action of the second longitudinally arranged seat valve, thereby conducting or closing the corresponding air passages. The first vacuum destruction air passage is connected through to the air outlet of the destruction pilot valve and the second vacuum destruction air passage. The compressed air finally discharges from the silencer on the second vacuum destruction air passage. At the same time of discharging, the air in the vacuum chamber will be brought into the second transverse air passage and discharged together with the compressed air, thereby generating a negative pressure in the vacuum chamber to achieve the effect of vacuum adsorption. Specifically, a negative pressure port 18 is provided between the vacuum chamber and the second transverse air passage, and a rubber cover plate 19 is provided on the negative pressure port. When the air in the vacuum chamber is inhaled into the second transverse air passage, the rubber cover plate will be opened by the flowing air. When the vacuum pilot valve is closed, the compressed air is blocked, the pressure in the second transverse air passage returns to normal, the rubber cover plate resets, and is firmly adsorbed by the negative pressure in the vacuum chamber. The vacuum chamber is sealed in the negative pressure state to maintain adsorption. When the destruction pilot valve acts, the second longitudinally arranged seat valve is triggered to act. The compressed gas enters the second vacuum destruction air passage through the second longitudinally arranged seat valve and finally enters the vacuum chamber through a high-pressure port 20 provided between the vacuum chamber and the second vacuum destruction air passage. At this time, the negative pressure in the vacuum chamber is destroyed.

[0028] Through the above setting of the air path, the functions of vacuum adsorption and vacuum breaking are formed. The first longitudinally arranged seat valve and the second longitudinally arranged seat valve are arranged in the first transverse air passage to form an integrated structure, effectively reducing the preparation size, and the closed installation can be realized by the cooperation of the first housing and the second housing without the cooperation of components such as end covers, simplifying the installation and having a good sealing effect.

[0029] Specifically, during use, compressed gas enters from the high-pressure gas pipe joint and into the first horizontal air passage. When both the first vertically arranged seat valve and the second vertically arranged seat valve are closed, the compressed gas cannot advance. When it is necessary to adsorb a product, the vacuum pilot valve actuates and opens, introducing the compressed gas into the branch that triggers the operation of the first vertically arranged seat valve. The first vertically arranged seat valve is triggered by the compressed gas and opens. The compressed gas in the first horizontal air passage continues to advance through the opened first vertically arranged seat valve into the second horizontal air passage and rapidly flows in the vacuum generating pipe, and finally discharges from the silencer. The use of an external silencer can effectively reduce noise and is convenient for maintenance and repair.

[0030] When the compressed gas flows at a high speed in the vacuum generating pipe, the gas in the vacuum chamber is driven and discharged together. The rubber cover plate is driven by the flowing air and is in a deformed and opened state. Thus, a negative pressure is achieved in the vacuum chamber, which can be used to adsorb products. After adsorbing the product, the vacuum pilot valve actuates and closes. There is no high-speed flowing gas in the vacuum generating pipe. The rubber cover plate is not subjected to force in the opening direction and will be adsorbed on the negative pressure port due to the negative pressure in the vacuum chamber to achieve reset, and the vacuum chamber is pressure-maintained.

[0031] When it is necessary to release the product, the destruction pilot valve operates, introducing the compressed gas into the branch that triggers the operation of the second vertically arranged seat valve. The second vertically arranged seat valve is triggered by the compressed gas and opens. The compressed gas in the first horizontal air passage continues to advance through the opened second vertically arranged seat valve into the second vacuum destruction air passage and breaks the pressure of the vacuum chamber through the high-pressure port to achieve the purpose of destroying the vacuum, and the product is released.

[0032] The above-mentioned negative pressure port is arranged upward, and the rubber cover plate is arranged on the upper surface of the negative pressure port. During the vacuum adsorption process, the rubber cover plate will be pushed open by the flowing gas and deformed upward. When the vacuum chamber is pressure-maintained, the pushing force on the rubber cover plate disappears, and it is adsorbed back to the negative pressure port due to the negative pressure in the vacuum chamber. During this process, the rubber cover plate can also quickly and stably reset due to the release of deformation energy and its own weight, with a good fitting effect, effectively preventing vacuum leakage and maintaining a good vacuum degree. In the design of the housing arrangement from top to bottom, the vacuum chamber in the third housing communicates with the vacuum generating pipe in the second housing, and the third housing can be made very small in the height direction from top to bottom without affecting the overall design. The smaller vacuum chamber can reduce the response time for adsorbing products.

[0033] On one side of the second housing, a digital display pressure switch 21 is also provided. The digital display pressure switch is used to detect the pressure condition in the vacuum chamber. And the vacuum generating tube includes a nozzle, a primary diffuser tube, and a secondary diffuser tube arranged in sequence to greatly increase the flow rate. A breaking flow regulating valve 22 connected to the second vacuum breaking air passage is also provided on the second housing. The breaking flow regulating valve regulates the gas flow for breaking the vacuum to prevent the product from being blown away due to excessive gas flow in the vacuum chamber when the product is released. Sealing gaskets are provided between the first housing, the second housing, and the third housing to achieve the assembly sealing effect between each gas path.

[0034] Refer to Figure 1 As shown, the first housing and the second housing are connected by a snap component 23 and a pin 24. The assembly is convenient, the connection is fixed and reliable. After they are fixed, the first vertical seat valve and the second vertical seat valve can be effectively sealed and fixed.

[0035] Refer to Figures 3 to 5 As shown, the muffler is inserted and arranged on one side of the second housing and fixed by a plug head pin 25. The installation is convenient. The second housing and the third housing are connected by an insertion limiting member 26 and a hook component. The hook component includes a horizontal hook 27 provided on the second housing and a clamping convex portion 28 provided on the third housing. An insertion plate groove 29 is also provided on the third housing. An outer shell pin 30 is arranged in the insertion plate groove. One end of the outer shell pin is provided with an abutting inclined surface 31, and the other end is provided with a limiting protrusion 32. The limiting protrusion cooperates with the plug head pin to limit the outer shell pin from coming out. The abutting inclined surface is used to squeeze the horizontal hook to deform.

[0036] The third housing is positioned and fixed by a horizontal insertion method. Its installation direction is restricted by the insertion limiting member. The third housing can only be combined with the second housing by insertion from one end. After the insertion is completed, the clamping convex portion on the third housing is located inside the horizontal hook, so that the third housing cannot be retracted, achieving the limiting and fixing effects in multiple directions, and the operation is convenient and reliable. The insertion limiting member has an inclined surface for cooperating with guiding and positioning. Through the insertion movement, the third housing and the second housing are in close contact.

[0037] During the disassembly process of the third housing and the second housing, an external force needs to be applied to the horizontal hook to make it deform, so that the clamping convex portion is disengaged from the limiting hook of the horizontal hook, and then the third housing can be pulled out horizontally. When an external process is used to apply an external force to the horizontal hook, it is easy to cause the horizontal hook to break. The designed outer shell pin can well solve this problem. When disassembly is required, push the outer shell pin so that the abutting inclined surface at the end of the outer shell pin abuts against the horizontal hook, and by continuously applying pressure, the abutting inclined surface squeezes the horizontal hook to deform, so as to disengage from the limiting hook of the clamping convex portion. The operation is simple and the horizontal hook is not easy to break.

[0038] The above embodiments are only preferred embodiments cited to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art in the technical field on the basis of the present utility model are within the protection scope of the present utility model.

Claims

1. A composite integrated vacuum generator, characterized in that, It includes a first housing, a second housing, and a third housing connected in sequence along the longitudinal direction. A vacuum pilot valve and a destruction pilot valve are provided on the first housing. A first transverse airway, a first vacuum generation airway, and a first vacuum destruction airway are provided in the first housing and are connected through. One end of the first transverse airway is connected to a high-pressure gas pipe joint. A first longitudinally arranged seat valve is provided in the vacuum generation airway, and a second longitudinally arranged seat valve is provided in the vacuum destruction airway; A second transverse airway and a second vacuum destruction airway are provided in the second housing. A vacuum generation pipe is provided in the second transverse airway. One end of the second transverse airway is connected to a silencer; A vacuum chamber and a filter chamber are horizontally provided in the third housing and are connected through. A filter element is provided in the filter chamber. One end of the filter chamber is connected to a vacuum pipe joint; The first transverse airway is connected through to the air inlets of the vacuum pilot valve and the destruction pilot valve. The first vacuum generation airway is connected through to the air outlet of the vacuum pilot valve and the second transverse airway. The first vacuum destruction airway is connected through to the air outlet of the destruction pilot valve and the second vacuum destruction airway. A negative pressure port is provided between the vacuum chamber and the second transverse airway. A rubber cover plate is provided on the negative pressure port. A high-pressure port is provided between the vacuum chamber and the second vacuum destruction airway.

2. The composite integrated vacuum generator according to claim 1, characterized in that, A digital display pressure switch is also provided on one side of the second housing.

3. The composite integrated vacuum generator according to claim 1, wherein The vacuum generation pipe includes a nozzle, a primary diffuser pipe, and a secondary diffuser pipe arranged in sequence.

4. The composite integrated vacuum generator according to claim 1, wherein, A destruction flow regulating valve connected to the second vacuum destruction airway is provided on the second housing.

5. The composite integrated vacuum generator according to claim 1, wherein, Sealing gaskets are provided between the first housing, the second housing, and the third housing.

6. The composite integrated vacuum generator according to claim 1, characterized in that, The first housing and the second housing are connected through a buckle assembly and a pin.

7. The composite integrated vacuum generator according to claim 1, characterized in that, The silencer is inserted and arranged on one side of the second housing and is fixed through a plug pin.

8. The composite integrated vacuum generator according to claim 7, wherein, The second housing and the third housing are connected through an insertion limiting member and a hook assembly. The hook assembly includes a horizontal hook provided on the second housing and a clamping convex portion provided on the third housing. An insertion plate groove is also provided on the third housing. An outer shell plug pin is provided in the insertion plate groove. One end of the outer shell plug pin is provided with an abutting inclined surface, and the other end is provided with a limiting protrusion. The limiting protrusion cooperates with the plug pin to limit the outer shell plug pin from coming out. The abutting inclined surface is used to squeeze the horizontal hook to deform.

Images