Buffer tank and pneumatic system

Abstract

The utility model discloses a kind of buffer tank and pneumatic system, it is related to industrial production technical field, wherein, buffer tank, for connecting air compressor and pneumatic equipment, the buffer tank includes tank body and regulating valve, the tank body is equipped with cavity, air inlet and air outlet, the cavity is respectively communicated with the air inlet and the air outlet, the air outlet is connected with the pneumatic equipment;The two sides of the regulating valve are respectively connected with the air compressor and the air inlet, for adjusting the gas flow of entering the tank body.The utility model aims at adjusting the gas flow of entering tank body, avoid the pressure surplus in tank body.

Description

Technical Field

[0001] This utility model relates to the field of industrial production technology, and in particular to a buffer tank and a pneumatic system. Background Technology

[0002] Industrial pneumatic systems typically consist of an air compressor and pneumatic equipment. The air compressor, as the power source, compresses air to a certain pressure and supplies it to the pneumatic equipment. The pneumatic equipment is the working terminal of the entire system, using high-pressure compressed air to complete various tasks. During normal operation of the pneumatic system, the air compressor's compression capacity needs to be matched with the air demand of the pneumatic equipment; otherwise, unstable air supply pressure will occur, affecting the efficiency of the pneumatic system.

[0003] In existing pneumatic systems, buffer tanks are typically used to improve system stability. When there is a pressure change between the output of the air compressor and the input of the pneumatic equipment, the buffer tank can store the compressed air input from the air compressor, acting as a buffer to prevent drastic pressure changes from being directly transmitted to the input of the pneumatic equipment, thus providing a relatively stable air source for the pneumatic equipment.

[0004] However, with this setup, the air compressor will continuously input compressed air into the buffer tank. When the gas flow rate input into the buffer tank is much greater than the gas flow rate output from the buffer tank, it may cause excessive pressure in the buffer tank, resulting in a waste of resources. Utility Model Content

[0005] The main purpose of this invention is to provide a buffer tank and a pneumatic system, which aims to regulate the gas flow rate entering the tank and avoid excessive pressure inside the tank.

[0006] To achieve the above objectives, this utility model proposes a buffer tank for connecting an air compressor and pneumatic equipment, the buffer tank comprising: The tank body has a cavity, an air inlet, and an air outlet. The cavity is connected to the air inlet and the air outlet, respectively, and the air outlet is connected to the pneumatic equipment. A regulating valve, with its two sides connected to the air compressor and the air inlet respectively, is used to regulate the gas flow rate entering the tank.

[0007] In one embodiment, the tank body is further provided with a detection port communicating with the cavity, and the buffer tank further includes a pressure tapping pipe connected to the detection port, the pressure tapping pipe being used to obtain the air pressure in the cavity; The regulating valve can adjust the gas flow rate entering the tank according to the actual gas pressure in the cavity.

[0008] In one embodiment, the regulating valve is a pilot-operated pressure regulating valve, which includes a valve body and a control port, a first connection port, and a second connection port opened in the valve body. The control port is connected to the side of the pressure tapping pipe away from the detection port, the first connection port is connected to the air compressor, and the second connection port is connected to the air inlet.

[0009] In one embodiment, the pressure tapping pipe is arranged perpendicular to the side wall of the tank.

[0010] In one embodiment, the detection port and the air inlet are located on the same side of the tank.

[0011] In one embodiment, the air outlet and the air inlet are located on opposite sides of the side wall of the tank.

[0012] In one embodiment, the bottom wall of the tank is further provided with a drain outlet, and the buffer tank further includes a drain valve located at the drain outlet.

[0013] In one embodiment, the top wall of the tank is further provided with a pressure relief port, and the buffer tank further includes a safety valve located at the pressure relief port.

[0014] In one embodiment, the buffer tank further includes a pressure gauge disposed in the tank body, the pressure gauge being used to display the air pressure inside the cavity.

[0015] This utility model also proposes a pneumatic system, which includes a buffer tank, the buffer tank comprising: The tank body has a cavity, an air inlet, and an air outlet. The cavity is connected to the air inlet and the air outlet, respectively, and the air outlet is connected to the pneumatic equipment. A regulating valve, with its two sides connected to the air compressor and the air inlet respectively, is used to regulate the gas flow rate entering the tank.

[0016] The technical solution of this utility model uses a regulating valve to connect the air compressor and the tank. When the pressure inside the tank is high, the valve core opening can be reduced, thereby reducing the gas flow rate delivered by the air compressor to the tank and preventing excessive pressure inside the tank. At the same time, when the pressure inside the tank is low, the valve core opening can be increased, thereby increasing the gas flow rate delivered by the air compressor to the tank, causing the pressure inside the tank to rise rapidly. 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 the structures shown in these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of an embodiment of the buffer tank provided by this utility model; Figure 2 A diagram illustrating the working process of the pneumatic system provided by this utility model.

[0019] Explanation of icon numbers: 100. Buffer tank; 1. Tank body; 11. Cavity; 12. Air inlet; 13. Detection port; 14. Air outlet; 15. Drain outlet; 16. Pressure relief port; 2. Regulating valve; 21. Valve body; 211. Control port; 212. First connection port; 213. Second connection port; 22. Pressure tapping pipe; 3. Drain valve; 4. Safety valve; 5. Pressure gauge.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] Industrial pneumatic systems typically consist of an air compressor and pneumatic equipment. The air compressor, as the power source, compresses air to a certain pressure and supplies it to the pneumatic equipment. The pneumatic equipment is the working terminal of the entire system, using high-pressure compressed air to complete various tasks. During normal operation of the pneumatic system, the air compressor's compression capacity needs to be matched with the air demand of the pneumatic equipment; otherwise, unstable air supply pressure will occur, affecting the efficiency of the pneumatic system.

[0025] In existing pneumatic systems, buffer tanks are typically used to improve system stability. When there is a pressure change between the output of the air compressor and the input of the pneumatic equipment, the buffer tank can store the compressed air input from the air compressor, acting as a buffer to prevent drastic pressure changes from being directly transmitted to the input of the pneumatic equipment, thus providing a relatively stable air source for the pneumatic equipment.

[0026] However, with this setup, the air compressor will continuously input compressed air into the buffer tank. When the gas flow rate input into the buffer tank is much greater than the gas flow rate output from the buffer tank, it may cause excessive pressure in the buffer tank, resulting in a waste of resources.

[0027] This utility model proposes a buffer tank 100 and a pneumatic system, which aims to automatically adjust the pressure inside the tank 1 and improve the pressure stabilization effect.

[0028] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the buffer tank 100 is used to connect an air compressor and a pneumatic device. The buffer tank 100 includes a tank body 1 and a regulating valve 2. The tank body 1 is provided with a cavity 11, an air inlet 12 and an air outlet 14. The cavity 11 is connected to the air inlet 12 and the air outlet 14 respectively, and the air outlet 14 is connected to the pneumatic device. The regulating valve 2 is connected to the air compressor and the air inlet 12 on both sides respectively, and is used to regulate the gas flow rate entering the tank body 1.

[0029] Understandably, by connecting the air compressor and tank 1 via regulating valve 2, when the pressure inside tank 1 is high, the valve opening of regulating valve 2 can be reduced, thereby reducing the gas flow rate delivered by the air compressor to tank 1 and preventing excessive pressure inside tank 1. Conversely, when the pressure inside tank 1 is low, the valve opening of regulating valve 2 can be increased, thereby increasing the gas flow rate delivered by the air compressor to tank 1 and causing the pressure inside tank 1 to rise rapidly.

[0030] It should be noted that in the existing technology, a pressure reducing valve is installed between the tank 1 and the pneumatic equipment to further regulate and stabilize the air supply pressure. The pressure reducing valve senses the pressure at the outlet 14 and adjusts the valve core opening to control the flow and pressure of compressed air, thereby providing a relatively stable air source for the pneumatic equipment. However, in actual use, the adjustment of the pressure reducing valve is passive, exhibiting a certain lag and slow response, resulting in fluctuations in the air pressure output from the outlet 14 to the pneumatic equipment.

[0031] To address the aforementioned issues, in one embodiment, the tank 1 is further provided with a detection port 13 communicating with the cavity 11. The buffer tank 100 also includes a pressure tapping pipe 22 connected to the detection port 13, which is used to obtain the air pressure within the cavity 11. The regulating valve 2 can adjust the gas flow rate entering the tank 1 in real time according to the actual air pressure within the cavity 11.

[0032] In this embodiment, the air pressure in the cavity 11 is obtained through the pressure tapping pipe 22, and the regulating valve 2 can adjust the gas flow rate entering the tank 1 according to the air pressure in the cavity 11 to ensure that the air pressure in the cavity 11 is stable, so that when output to the pneumatic equipment, it can be output with a constant air pressure.

[0033] Understandably, when the air pressure inside tank 1 is lower than the preset value, the valve core opening of regulating valve 2 is increased to make the air pressure inside tank 1 quickly rise back to the preset value; conversely, when the air pressure inside tank 1 is higher than the preset value, the valve core opening of regulating valve 2 is decreased to make the air pressure drop to the preset value, so that the air pressure output from the air outlet 14 is always the preset value.

[0034] Optionally, a pressure reducing valve can be further installed between the tank 1 and the pneumatic device to further balance the air pressure, thereby adjusting the pressure difference between the air pressure in the cavity 11 and the input end of the pneumatic device. Alternatively, a pressure reducing valve can be omitted, and the preset value of the air pressure in the cavity 11 can be directly set to the pressure required by the input end of the pneumatic device.

[0035] Optionally, the pressure tap 22 can be made of a high-pressure resistant material to ensure its reliability and safety in high-pressure environments.

[0036] In one implementation, please refer to Figure 1The regulating valve 2 is a pilot-operated pressure regulating valve. The pilot-operated pressure regulating valve includes a valve body 21 and a control port 211, a first connection port 212 and a second connection port 213 opened on the valve body 21. The control port 211 is connected to the side of the pressure tapping pipe 22 away from the detection port 13, the first connection port 212 is connected to the air compressor, and the second connection port 213 is connected to the air inlet 12.

[0037] In this embodiment, the regulating valve 2 is a pilot-operated pressure regulating valve. The pilot-operated pressure regulating valve can sense changes in air pressure through the control port 211 and automatically adjust the valve core opening to control the gas flow rate and ensure stable air pressure. At this time, the control port 211 is directly connected to the cavity 11 through the pressure tapping pipe 22, allowing direct sensing of air pressure changes within the tank 1, thereby adjusting the connection between the first connection port 212 and the second connection port 213 to control the gas flow rate.

[0038] It should be noted that a pilot-operated pressure regulating valve generally consists of two parts: a pilot valve and a main valve. When fluid enters the valve, it first acts on the pilot valve, which adjusts the fluid pressure above or below the main valve according to the set pressure. This pressure change drives the valve core of the main valve to move, thereby changing the opening degree of the main valve and controlling the fluid pressure. The pilot valve is usually more sensitive and has a faster response time than the main valve, quickly adapting to changes in fluid pressure and thus maintaining a stable outlet pressure.

[0039] Alternatively, the regulating valve 2 can also be a regular valve. The pressure tap 22 is connected to the pressure detection mechanism to directly obtain the real-time pressure. Then, the opening of the regulating valve 2 can be adjusted manually or through a mechanical mechanism to control the gas flow and ensure the stability of the gas pressure.

[0040] In one implementation, please refer to Figure 1 The pressure tapping pipe 22 is installed perpendicular to the side wall of the tank body 1.

[0041] In this embodiment, the pressure tapping pipe 22 is installed perpendicular to the side wall of the tank 1. This ensures that the pressure tapping pipe 22 can accurately obtain the air pressure information inside the tank 1, avoiding air pressure measurement errors caused by improper installation angle. At the same time, the vertically installed pressure tapping pipe 22 has a simple structure and is easy to install.

[0042] Optionally, the length and diameter of the pressure tapping tube 22 can be adjusted according to actual needs to optimize the accuracy and response speed of the pressure measurement.

[0043] In one implementation, please refer to Figure 1 The tank body 1 is also provided with an air outlet 14 that communicates with the cavity 11. The air outlet 14 and the air inlet 12 are located on opposite sides of the side wall of the tank body 1. The air outlet 14 is used to connect with pneumatic equipment.

[0044] In this embodiment, the tank 1 is also provided with an air outlet 14, which communicates with the cavity 11 and is located on opposite sides of the side wall of the tank 1 along with the air inlet 12. The air outlet 14 is used to connect to pneumatic equipment to ensure that compressed air can be smoothly transmitted to the pneumatic equipment.

[0045] Understandably, by setting the air inlet 12 and the air outlet 14 on opposite sides of the side wall, the airflow can flow more smoothly along the side wall of the tank 1, avoiding strong disturbances and backflow caused by the airflow directly impacting the side wall of the tank 1 after entering the tank 1, thereby reducing energy dissipation and stabilizing the air pressure inside the tank 1.

[0046] In one implementation, please refer to Figure 1 The detection port 13 and the air inlet 12 are located on the same side of the tank body 1.

[0047] In this embodiment, the detection port 13 and the air inlet 12 are located on the same side of the tank body 1 and are arranged adjacent to the air inlet 12, so that the pressure tapping pipe 22 can obtain the air pressure information near the air inlet 12 more directly, thereby improving the accuracy and response speed of the detection.

[0048] In one implementation, please refer to Figure 1 The bottom wall of the tank body 1 is also provided with a drain outlet 15, and the buffer tank 100 also includes a drain valve 3 provided at the drain outlet 15.

[0049] In this embodiment, the bottom wall of the tank 1 is provided with a drain outlet 15 and a drain valve 3 is installed. The drain valve 3 is used to periodically discharge the condensate in the tank 1 to prevent moisture accumulation from affecting the pneumatic system.

[0050] Optionally, the drain valve 3 can be controlled automatically or manually, opening periodically to drain the condensate in the cavity 11. Optionally, a water depth sensor can also be installed in the cavity 11, automatically opening the drain valve 3 when the water depth reaches a certain level.

[0051] In one implementation, please refer to Figure 1 The top wall of the tank body 1 is also provided with a pressure relief port 16, and the buffer tank 100 also includes a safety valve 4 provided at the pressure relief port 16.

[0052] In this embodiment, the top wall of the tank 1 is provided with a pressure relief port 16 and a safety valve 4 is installed. The safety valve 4 is used to automatically release pressure when the air pressure inside the tank 1 exceeds a preset safety value, so as to prevent damage to the tank 1 or safety accidents caused by excessive pressure.

[0053] In one implementation, please refer to Figure 1 The buffer tank 100 also includes a pressure gauge 5 installed in the tank body 1, which is used to display the air pressure in the cavity 11.

[0054] In this embodiment, pressure gauge 5 is installed on tank 1 to display the air pressure inside cavity 11 in real time. Operators can intuitively understand the system's operating status through pressure gauge 5, facilitating timely detection and handling of abnormal air pressure conditions.

[0055] Please see Figure 2 This utility model also proposes a pneumatic system, which includes an air compressor, pneumatic equipment and a buffer tank 100. The specific structure of the buffer tank 100 is as described in the above embodiments. Since this pneumatic system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0056] In this system, compressed air generated by the air compressor is first delivered to pressure reducing valve 2, which then directly delivers the compressed air into tank 1. The compressed air stored in tank 1 supplies downstream pneumatic equipment and, on the other hand, obtains the actual pressure information inside tank 1 through pressure tapping pipe 22, transmitting this information to a comparator. The comparator compares the actual pressure information with a preset value and then sends a control signal to pressure reducing valve 2, thereby adjusting the valve core opening of pressure reducing valve 2 to change the gas flow rate and achieve automatic regulation of the air pressure within the cavity 11.

[0057] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A buffer tank for connecting an air compressor and pneumatic equipment, characterized in that, The buffer tank includes: The tank body has a cavity, an air inlet, and an air outlet. The cavity is connected to the air inlet and the air outlet, respectively, and the air outlet is connected to the pneumatic equipment. A regulating valve, with its two sides connected to the air compressor and the air inlet respectively, is used to regulate the gas flow rate entering the tank.

2. The buffer tank as described in claim 1, characterized in that, The tank body is also provided with a detection port communicating with the cavity, and the buffer tank also includes a pressure tapping pipe connected to the detection port, the pressure tapping pipe being used to obtain the air pressure in the cavity; The regulating valve can adjust the gas flow rate entering the tank according to the actual gas pressure in the cavity.

3. The buffer tank as described in claim 2, characterized in that, The regulating valve is a pilot-operated pressure regulating valve, which includes a valve body and a control port, a first connection port and a second connection port opened in the valve body. The control port is connected to the side of the pressure tapping tube away from the detection port, the first connection port is connected to the air compressor, and the second connection port is connected to the air inlet.

4. The buffer tank as described in claim 3, characterized in that, The pressure tapping pipe is installed perpendicular to the side wall of the tank.

5. The buffer tank as described in claim 2, characterized in that, The detection port and the air inlet are located on the same side of the tank.

6. The buffer tank according to any one of claims 1 to 5, characterized in that, The air outlet and the air inlet are located on opposite sides of the side wall of the tank.

7. The buffer tank as described in claim 6, characterized in that, The bottom wall of the tank is also provided with a drain outlet, and the buffer tank also includes a drain valve located at the drain outlet.

8. The buffer tank as described in claim 6, characterized in that, The top wall of the tank is also provided with a pressure relief port, and the buffer tank also includes a safety valve located at the pressure relief port.

9. The buffer tank according to any one of claims 1 to 5, characterized in that, The buffer tank also includes a pressure gauge installed in the tank body, which is used to display the air pressure inside the cavity.

10. A pneumatic system, characterized in that, The pneumatic system includes a buffer tank as described in any one of claims 1 to 9.

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