Pneumatic vacuum exhaust device

Abstract

The utility model relates to a vacuum exhaust equipment technical field, concretely relates to a kind of pneumatic vacuum exhaust device, comprising: pneumatic drive assembly, vacuum generation component, exhaust cavity and sealing assembly, pneumatic drive assembly includes gas supply pipe, gas source interface and pressure regulating valve, one end of gas supply pipe is fixedly connected with gas source interface, pressure regulating valve is fixedly installed in the middle part of gas supply pipe, the other end of gas supply pipe is communicated with vacuum generation component, vacuum generation component includes vacuum generator body and check valve, the vacuum end of vacuum generator body is fixedly connected with check valve, the other end of check valve is communicated with exhaust cavity by negative pressure air pipe, by adopting compressed air as the design of power source, without power drive when using, completely avoid the restriction that electric vacuum pump cannot be used in outdoor, no electricity or explosion-proof etc. Special occasions, simultaneously without hydraulic oil leakage and cavitation risk, operation is safe and reliable, especially suitable for flammable and explosive, humid etc.

Description

Technical Field

[0001] This utility model relates to the field of vacuum exhaust equipment technology, specifically to a pneumatic vacuum exhaust device. Background Technology

[0002] In industrial production, food packaging, medical devices and other fields, it is often necessary to use exhaust devices to evacuate and exhaust specific spaces or containers in order to achieve purposes such as moisture prevention, oxidation prevention and improvement of process stability.

[0003] Traditional exhaust systems mostly use electric vacuum pumps or hydraulic transmission for vacuum exhaust. Although they can achieve a certain vacuuming effect, electric vacuum pumps have problems such as high energy consumption, high noise, and high maintenance costs. In addition, electric vacuum pumps require an external power supply, making them unusable in situations without power supply, such as outdoor operations, temporary construction, or power outages, thus limiting their applicability. Furthermore, the motor drive structure is complex, bulky, and has poor mobility. During hydraulic transmission, air bubbles in the oil are violently compressed in the high-pressure area and rapidly expand in the low-pressure area, which can cause cavitation, resulting in noise and severe vibration from the pump, motor, and valve assembly.

[0004] In addition, the exhaust chamber and sealing components of some devices are not tightly fitted, which can easily lead to air leakage, resulting in low exhaust efficiency and difficulty in maintaining vacuum. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a pneumatic vacuum exhaust device that can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a pneumatic vacuum exhaust device, including: a pneumatic drive assembly, a vacuum generating assembly, an exhaust chamber, and a sealing assembly. The pneumatic drive assembly includes an air supply pipe, an air source interface, and a pressure regulating valve. One end of the air supply pipe is fixedly connected to the air source interface for connecting external compressed air. The pressure regulating valve is fixedly installed in the middle of the air supply pipe for adjusting the compressed air pressure. The other end of the air supply pipe is connected to the vacuum generating assembly. The vacuum generating assembly includes a vacuum generator body and a one-way valve. The air inlet end of the vacuum generator body is connected to the pneumatic drive assembly through the air supply pipe. The vacuum end of the vacuum generator body is fixedly connected to the one-way valve for preventing gas backflow. The other end of the one-way valve is connected to the exhaust chamber through a negative pressure air pipe.

[0008] Furthermore, an observation window is fixedly connected to one end of the exhaust chamber, a vent is provided on the side wall of the exhaust chamber for connection with the vacuum generating component, and an external thread is fixedly connected to the top of the exhaust chamber.

[0009] Furthermore, the sealing assembly includes a sealing cap, the inner wall of which is provided with internal threads, and the internal threads are threadedly connected to the external threads.

[0010] Furthermore, the outer wall of the sealing cap is uniformly and fixedly connected with several anti-slip protrusions, and a sealing groove is opened at the top inside the sealing cap, with a sealing ring snapped into the inside of the sealing groove.

[0011] Furthermore, the pneumatic drive assembly also includes a pressure gauge, which is fixedly installed in the middle of the air supply pipe and is used to display the pressure value of compressed air in real time.

[0012] Furthermore, the vacuum generating assembly also includes a negative pressure gauge, which is fixedly installed in the middle of the negative pressure gas pipe and is used to detect the negative pressure value in the exhaust chamber.

[0013] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0014] 1. By using compressed air as a power source, the design eliminates the need for electricity during operation, completely avoiding the limitations of electric vacuum pumps in outdoor, power-free, or explosion-proof environments. It also eliminates the risk of hydraulic oil leakage and cavitation, ensuring safe and reliable operation. It is particularly suitable for harsh environments such as flammable, explosive, and humid conditions. The device has a simple overall structure, uses compressed air as its energy source, resulting in low energy consumption. Furthermore, it does not generate electrical sparks or oil pollution during operation, producing minimal noise and vibration. The pneumatic components themselves have high reliability, and maintenance costs are significantly lower than those of electric or hydraulic systems.

[0015] 2. By setting a sealing cover with a sealing ring and a sealing groove, and connecting it with the external thread at the top of the exhaust chamber, multiple seals are achieved, effectively preventing air leakage and ensuring the high airtightness of the exhaust chamber, thereby significantly improving the vacuuming efficiency and the stability of the vacuum degree.

[0016] 3. With the setting of pressure gauge and negative pressure gauge, the driving air source pressure and the vacuum degree in the cavity can be monitored in real time, which facilitates precise adjustment and process control. With the setting of observation window, users can directly observe the internal exhaust process or material status, which improves the intuitiveness and convenience of operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the vacuum generating component structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the exhaust chamber structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the sealing component structure of this utility model.

[0022] The labels in the diagram represent:

[0023] 1. Pneumatic drive assembly; 101. Air supply pipe; 102. Air source interface; 103. Pressure regulating valve; 104. Pressure gauge; 2. Vacuum generating assembly; 201. Vacuum generator body; 202. One-way valve; 203. Negative pressure air pipe; 204. Negative pressure gauge; 3. Exhaust chamber; 301. Observation window; 302. External thread; 4. Sealing assembly; 401. Sealing cover; 402. Sealing groove; 403. Sealing ring; 404. Internal thread; 405. Anti-slip protrusion. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] The present invention will be further described below with reference to the embodiments. Example 1:

[0026] Reference Figure 1-4This first embodiment of the present invention discloses a pneumatic vacuum exhaust device, comprising: a pneumatic drive assembly 1, a vacuum generating assembly 2, an exhaust chamber 3, and a sealing assembly 4. The pneumatic drive assembly 1 includes an air supply pipe 101, an air source interface 102, and a pressure regulating valve 103. One end of the air supply pipe 101 is fixedly connected to the air source interface 102, which is used to access external compressed air. The pressure regulating valve 103 is fixedly installed in the middle of the air supply pipe 101 and is used to regulate the compressed air pressure. The other end of the air supply pipe 101 is connected to the vacuum generating assembly 2. The vacuum generating assembly 2 includes a vacuum generator body 201 and a one-way valve 202. The air inlet end of the vacuum generator body 201 is connected to the pneumatic drive assembly 1 through the air supply pipe 101. The vacuum end of the vacuum generator body 201 is fixedly connected to the one-way valve 202, which is used to prevent gas backflow. The other end of the one-way valve 202 is connected to the exhaust chamber 3 through the negative pressure air pipe 203.

[0027] By using compressed air as a power source, the design eliminates the need for electricity during operation, completely avoiding the limitations of electric vacuum pumps in outdoor, power-free, or explosion-proof environments. It also eliminates the risk of hydraulic oil leakage and cavitation, ensuring safe and reliable operation. It is particularly suitable for harsh working environments such as flammable and explosive materials and humid conditions. The device has a simple overall structure, uses compressed air as its energy source, has low energy consumption, and does not generate electrical sparks or oil pollution during operation. It also produces low noise and vibration, and the pneumatic components themselves have high reliability, resulting in maintenance costs far lower than electric or hydraulic systems. Example 2:

[0028] Reference Figure 1-4 This is the second embodiment of the present invention, which differs from the first embodiment in that:

[0029] An observation window 301 is fixedly connected to one end of the exhaust chamber 3. The side wall of the exhaust chamber 3 is provided with a vent interface connected to the vacuum generating component 2. The top of the exhaust chamber 3 is fixedly connected with an external thread 302. The sealing component 4 includes a sealing cover 401. The inner wall of the sealing cover 401 is provided with an internal thread 404. The internal thread 404 and the external thread 302 are threadedly connected. Several anti-slip protrusions 405 are evenly fixedly connected to the outer wall of the sealing cover 401. A sealing groove 402 is opened at the top of the inside of the sealing cover 401. A sealing ring 403 is snapped into the inside of the sealing groove 402.

[0030] By setting a sealing cover 401 with a sealing ring 403 and a sealing groove 402, and threadedly connecting it to the external thread 302 at the top of the exhaust chamber 3, multiple seals are achieved, effectively preventing air leakage and ensuring the high airtightness of the exhaust chamber 3, thereby significantly improving the vacuuming efficiency and the stability of the vacuum degree.

[0031] The pneumatic drive assembly 1 also includes a pressure gauge 104, which is fixedly installed in the middle of the air supply pipe 101. The pressure gauge 104 is used to display the pressure value of compressed air in real time. The vacuum generating assembly 2 also includes a negative pressure gauge 204, which is fixedly installed in the middle of the negative pressure air pipe 203. The negative pressure gauge 204 is used to detect the negative pressure value in the exhaust chamber 3.

[0032] By setting the pressure gauge 104 and the vacuum gauge 204, the driving air source pressure and the vacuum degree in the cavity can be monitored in real time, which facilitates precise adjustment and process control. By setting the observation window 301, the user can directly observe the internal exhaust process or the material status, which improves the intuitiveness and convenience of operation.

[0033] The remaining structure is the same as that in Example 1.

[0034] The workflow of this utility model is as follows:

[0035] First, connect the external compressed air source to the air source interface 102 of the pneumatic drive assembly 1 through the pipeline. Check whether the sealing cover 401 of the sealing assembly 4 is fastened to the external thread 302 at the top of the exhaust chamber 3. Ensure that the sealing ring 403 is correctly installed in the sealing groove 402 to ensure the initial sealing of the exhaust chamber 3. Then, turn on the external air source and the compressed air enters the air supply pipe 101 through the air source interface 102. Observe the reading of the pressure gauge 104 and adjust the pressure of the compressed air to the working pressure value required by the pressure regulating valve 103.

[0036] Secondly, the compressed air after pressure adjustment flows through the air supply pipe 101 into the vacuum generating component 2, driving the vacuum generator body 201 to work. Based on the jet principle, a negative pressure is formed at the vacuum end. This negative pressure is transmitted to the exhaust chamber 3 through the opened one-way valve 202 and the negative pressure air pipe 203. The air in the exhaust chamber 3 is continuously extracted, and the internal pressure gradually decreases. By observing the reading of the negative pressure gauge 204, the vacuum degree established in the exhaust chamber 3 can be monitored in real time. At the same time, the condition and material status inside the chamber can be intuitively understood through the observation window 301.

[0037] Finally, when the negative pressure gauge 204 shows that the required vacuum level has been reached, the compressed air supply can be maintained to maintain the vacuum state. The one-way valve 202 can effectively prevent gas backflow during the vacuum maintenance stage or when the air source is unexpectedly interrupted. When it is necessary to stop the operation, first turn off the external compressed air source, the vacuum generator body 201 stops working, the exhaust process ends, and after confirming that the device has stopped running and the internal and external pressures of the system have been balanced, rotate the anti-slip protrusion 405 on the sealing cover 401, unscrew the sealing cover 401, and the material in the exhaust chamber 3 can be taken out.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pneumatic vacuum exhaust device, characterized in that, include: The system comprises a pneumatic drive assembly (1), a vacuum generating assembly (2), an exhaust chamber (3), and a sealing assembly (4). The pneumatic drive assembly (1) includes an air supply pipe (101), an air source interface (102), and a pressure regulating valve (103). One end of the air supply pipe (101) is fixedly connected to the air source interface (102), which is used to connect to external compressed air. The pressure regulating valve (103) is fixedly installed in the middle of the air supply pipe (101) and is used to regulate the compressed air pressure. The other end of the air supply pipe (101) is... One end is connected to the vacuum generating assembly (2), which includes a vacuum generator body (201) and a one-way valve (202). The air inlet of the vacuum generator body (201) is connected to the pneumatic drive assembly (1) through the air supply pipe (101). The vacuum end of the vacuum generator body (201) is fixedly connected to the one-way valve (202). The one-way valve (202) is used to prevent gas backflow. The other end of the one-way valve (202) is connected to the exhaust chamber (3) through the negative pressure air pipe (203).

2. The pneumatic vacuum exhaust device according to claim 1, characterized in that, An observation window (301) is fixedly connected to one end of the exhaust chamber (3), and a ventilation interface connected to the vacuum generating assembly (2) is provided on the side wall of the exhaust chamber (3). An external thread (302) is fixedly connected to the top of the exhaust chamber (3).

3. The pneumatic vacuum exhaust device according to claim 2, characterized in that, The sealing assembly (4) includes a sealing cap (401), the inner wall of which is provided with an internal thread (404), and the internal thread (404) is threadedly connected to the external thread (302).

4. A pneumatic vacuum exhaust device according to claim 3, characterized in that, The outer wall of the sealing cover (401) is uniformly fixed with several anti-slip protrusions (405), and the top of the inside of the sealing cover (401) is provided with a sealing groove (402), and a sealing ring (403) is snapped into the inside of the sealing groove (402).

5. A pneumatic vacuum exhaust device according to claim 1, characterized in that, The pneumatic drive assembly (1) also includes a pressure gauge (104), which is fixedly installed in the middle of the air supply pipe (101) and is used to display the pressure value of compressed air in real time.

6. A pneumatic vacuum exhaust device according to claim 1, characterized in that, The vacuum generating assembly (2) also includes a negative pressure gauge (204), which is fixedly installed in the middle of the negative pressure air pipe (203) and is used to detect the negative pressure value in the exhaust chamber (3).

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