Vacuum buffer tank for Roots vacuum unit

Abstract

The utility model discloses a vacuum buffer tank for a Roots vacuum unit, which relates to the technical field of vacuum buffer tanks and comprises a tank body, a cyclone separator and a buffer gas tank. Flow guide fan blades with holes are arranged in the tank body, a smooth inclined baffle is installed in the tank body, a floating ball liquid level meter and an electric ball valve are installed at the bottom of the tank body, an air inlet is formed in the left side of the cyclone separator, an air outlet is formed in the right side of the cyclone separator, and an ash hopper is installed below the cyclone separator. Under the combined action of a motor, a bevel gear set, a belt transmission device and a straight rod, airflow can be driven by a spiral fan blade to be guided to a gaseous buffer layer from an air inlet, then is driven by rotation of a fan to be guided into a buffer gas tank from the gaseous buffer layer, and is exhausted from an air outlet; the gas-liquid-solid three-phase separation improves the efficiency of a vacuum system manufactured by the Roots vacuum unit, and prevents solid particles or liquid from damaging equipment.

Description

Technical Field

[0001] This utility model relates to the field of vacuum buffer tank technology, and more specifically, to a vacuum buffer tank for Roots vacuum units that realizes gas-liquid-solid three-phase separation. Background Technology

[0002] Roots vacuum units are compact in structure, highly efficient, and capable of handling various complex mixtures. They are suitable for multiple fields such as chemical, pharmaceutical, and food processing, meeting diverse industrial needs. Vacuum buffer tanks are devices used to store and regulate vacuum, and are commonly used to store and buffer gases extracted by Roots vacuum units.

[0003] In existing technologies, the gas pumped by Roots vacuum units often contains solid or liquid impurities during operation. Solid particles may clog components in the vacuum system, leading to equipment damage; liquids may accumulate in the vacuum system, forming liquid seals and affecting the stability of the vacuum level; in addition, solids and liquids may trigger chemical reactions in the system, producing byproducts that affect the production process. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a vacuum buffer tank for Roots vacuum units.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] This utility model proposes a vacuum buffer tank for a Roots vacuum unit, comprising a tank body. A cyclone separator is installed on one side of the tank body to separate solid impurities from the gas drawn by the Roots vacuum unit, preventing machine blockage. A buffer tank for storing and discharging gas is connected to the other side of the tank body, buffering the drawn gas in the tank and discharging it when needed. A hydrophobic material is provided at the connection between the tank body and the buffer tank to prevent the passage of liquid droplets. A first flow guide device is installed at the top of the tank body to effectively guide the gas flow into the tank, increasing the gas flow rate. A smooth inclined baffle is provided inside the tank body to collect liquid droplets in the gas, the smooth inclined baffle being inclined downwards towards the buffer tank end. The tank has openings in its walls to collect droplets from the gas into a collection tank, preventing droplet accumulation inside the tank. A float level gauge is installed at the bottom of the tank, below a smooth inclined baffle, and an electric ball valve is installed at the bottom of the tank. This automatically collects and discharges droplets from the incoming airflow, further improving production efficiency. Inside the buffer tank, on the side with the hydrophobic material, a fifth straight rod connects the top and bottom of the buffer tank. The fifth straight rod is pivotally connected to a fourth straight rod via a third bearing. The fourth straight rod connects to a second flow guide device, effectively reducing airflow resistance and helping the airflow pass through the buffer tank more evenly. A transmission structure is installed above the buffer tank and on one side of the tank. This transmission structure transmits the kinetic energy of the motor to two fans, enabling them to perform the flow guide function.

[0007] In a preferred embodiment of this utility model, a first straight rod is pivotally connected to the top of the tank via a first bearing. The first straight rod has guide vanes with multiple small holes. A second straight rod is installed on the outer side of the upper end of the tank. A third straight rod is pivotally connected to the lower part of the second straight rod via a second bearing. The third straight rod is driven by the first straight rod inside the tank via a first pulley and a second pulley. A first bevel gear is connected to the bottom end of the third straight rod. A motor is installed above the buffer tank. The motor has a motor connecting rod. A second bevel gear is nested in the middle of the motor connecting rod, meshing with the first bevel gear. The motor connecting rod is driven by a fourth straight rod via a third pulley and a fourth pulley.

[0008] As a preferred embodiment of this utility model, the cyclone separator has an air inlet at one end and an air outlet at the other end that is connected to the tank body. An ash hopper is provided below the cyclone separator.

[0009] As a preferred embodiment of this utility model, a fan is installed at one end of the fourth straight rod inside the buffer tank, and an exhaust port is installed on one side of the buffer tank.

[0010] As a preferred embodiment of this utility model, the tank body and the buffer gas tank are fixed by a first inclined bracket and a second inclined bracket.

[0011] The beneficial effects of this utility model are as follows:

[0012] When creating a vacuum environment, the gas extracted by the Roots vacuum unit is introduced into the vacuum buffer tank through a cyclone separator, which separates solids in the gas flow to prevent blockage of components and damage to equipment. When the gas flow enters the tank, the perforated guide vanes inside the tank can reduce gas flow pulsation and effectively guide the gas flow into the gas chamber. The smooth inclined baffle, float level gauge and electric ball valve can automatically collect and discharge droplets in the introduced gas flow, further improving production efficiency. The hydrophobic film between the tank and the gas chamber can prevent droplets from entering the gas chamber and prevent the accumulation of droplets in the gas chamber. Attached Figure Description

[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the cyclone separator of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the first flow guiding device of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the second flow guiding device of this utility model;

[0018] Figure 5 This is a schematic diagram of the transmission structure of this utility model.

[0019] Reference numerals: 1. Tank; 2. Cyclone separator; 3. First flow guiding device; 4. Smooth inclined baffle; 5. Float level gauge; 6. Electric ball valve; 7. Hydrophobic material; 8. Second flow guiding device; 9. Transmission structure; 10. Buffer gas tank; 11. Exhaust port; 12. First inclined support; 13. Second inclined support; 21. Air inlet; 22. Air outlet; 23. Ash hopper; 31. First bearing; 32. First pulley; 33. First straight rod; 34. Flow guiding fan blade; 35. Small hole; 81. Third bearing; 82. Third pulley; 83. Fan; 84. Fifth straight rod; 85. Fourth straight rod; 91. Second straight rod; 92. Second pulley; 93. Third straight rod; 94. First bevel gear; 95. Second bevel gear; 96. Motor; 97. Fourth pulley; 98. Second bearing; 99. Motor connecting rod. Detailed Implementation

[0020] A cyclone separator 2 is installed on one side of the tank body 1 to separate solid impurities from the gas, preventing machine blockage. A buffer tank 10 is connected to the other side of the tank body 1 for storing and discharging gas, buffering the extracted gas and discharging it when needed. A hydrophobic material 7 is provided at the connection between the tank body 1 and the buffer tank 10 to prevent droplet passage. A first flow guide device 3 is installed at the top inside the tank body 1 to effectively guide the airflow into the tank and increase the airflow rate. A smooth inclined baffle 4 is provided inside the tank body 1 to collect droplets from the gas. The smooth inclined baffle 4 is inclined downwards towards the buffer tank 10 and has an opening in the tank wall, allowing droplets to be collected into a collection tank. To prevent droplet accumulation inside the tank 1, a float level gauge 5 is installed at the bottom of the tank 1 below the smooth inclined baffle 4, and an electric ball valve 6 is installed at the bottom of the tank 1; this automatically collects and discharges droplets in the introduced airflow, further improving production efficiency; a fifth straight rod 84 is provided inside the buffer tank 10 and on the side of the hydrophobic material 7, connecting the top and bottom of the buffer tank 10; the fifth straight rod 84 is pivotally connected to a fourth straight rod 85 through a third bearing 81; the fourth straight rod 85 is connected to a second flow guiding device 8, which can effectively reduce airflow resistance and help the airflow pass through the buffer tank 10 more evenly; a transmission structure 9 is provided above the buffer tank 10 and on one side of the tank 1, which can transmit the kinetic energy of the motor to the two flow guiding devices to achieve the flow guiding function.

[0021] Working principle

[0022] The tank 1 is equipped with a first straight rod 33, on which a guide vane 6 is mounted. The separated gas is guided downwards from the tank 1 by the rotating vane, accelerating gas flow. The small holes on the vane reduce airflow pulsation and make the airflow more stable. A smooth inclined baffle 4 is installed below the tank 1 to collect liquid droplets in the gas into a liquid collection tank below the tank 1. The liquid collection tank is equipped with a float level gauge 5 and an electric ball valve 6. When the water level in the liquid collection tank reaches the preset height of the float level gauge 5, the float level gauge 6 transmits an electrical signal to the electric ball valve 6, at which point the valve opens to automatically drain the liquid, saving manpower and improving efficiency.

[0023] The cyclone separator has an air inlet 21 on the left side. The gas drawn by the Roots vacuum unit enters through the air inlet 21 and is separated by the spiral flow of the cyclone separator 2. Solid impurities are deposited in the lower ash hopper 23, thus achieving the separation of gas and solid. The separated gas enters the tank 1 through the air outlet 22 on the right side.

[0024] The buffer tank 10 is provided with a hydrophobic material 7 at the connection between itself and the tank body to prevent droplets from entering and accumulating inside the buffer tank 10. A fan 83 is installed inside the buffer tank 10 to direct the airflow into the buffer tank 10 to its right end, facilitating the exhaust port 11 to expel the gas and improve efficiency. Furthermore, the buffer tank 10 and the lower part of the tank body 1 are provided with a first inclined support 12 and a second inclined support 13 to enhance structural stability and prevent potential collapse.

[0025] A motor 96 is installed above the buffer gas tank 10. Inside the buffer gas tank 10, a fourth straight rod 85 and a fifth straight rod 84 are orthogonally pivotally connected by a third bearing 81. A fan 83 is installed at one end of the fifth straight rod 84. A fourth pulley 97 and a third pulley 82 are provided to transmit the kinetic energy output from the motor 96 from the motor connecting rod 99 to the fifth straight rod 84, thereby driving the fan 83 to rotate and guiding the gas inside the buffer gas tank 10. A second straight rod 91 is connected to one side of the upper part of the tank body 1, and the third straight rod 93 is connected to a second shaft. The bearing 98 is pivotally connected to the second straight rod 91. The bottom end of the third straight rod 13 is equipped with the first bevel gear 94. The motor connecting rod 99 is nested with the second bevel gear 95. The first bevel gear 94 and the second bevel gear 95 are tangentially linked to transmit the kinetic energy of the motor 96 to the third straight rod 93 for rotation. The first pulley 32 and the second pulley 92 are provided to transmit the rotational motion of the third straight rod 93 to the first straight rod 33, so that the guide fan 34 can rotate and realize the guiding function in the tank 1, making the gas flow smoother.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vacuum buffer tank for Roots vacuum unit, comprising a tank body (1), characterized in that: A cyclone separator (2) for separating solid impurities in the gas is installed on one side of the tank (1), and a buffer tank (10) for storing and discharging the gas is connected to the other side of the tank (1). A hydrophobic material (7) to prevent droplet particles from passing through is provided at the connection between the tank (1) and the buffer tank (10). A first flow guide device (3) is installed at the top inside the tank (1). A smooth inclined baffle (4) for collecting droplets in the gas is provided inside the tank. The smooth inclined baffle (4) is inclined downward toward the buffer tank (10) and has a certain angle with the tank wall. An opening is provided. A float level gauge (5) is installed at the bottom of the tank (1) and below the smooth inclined baffle. An electric ball valve (6) is provided at the bottom of the tank (1). A fifth straight rod (84) is provided inside the buffer gas tank (10) and on the side of the hydrophobic material (7) to connect the top and bottom of the buffer gas tank (10). The fifth straight rod (84) is pivotally connected to a fourth straight rod (85) through a third bearing (81). The fourth straight rod (85) is connected to a second flow guiding device (8). A transmission structure (9) is provided above the buffer gas tank (10) and on one side of the tank (1).

2. The vacuum buffer tank for Roots vacuum unit according to claim 1, characterized in that: A first straight rod (33) is pivotally connected to the top of the tank body (1) via a first bearing (31). A guide vane (34) is provided on the first straight rod, and multiple small holes (35) are provided on the guide vane (34). A second straight rod (91) is installed on the outer side of the upper end of the tank body (1). A third straight rod (93) is pivotally connected to the lower part of the second straight rod (91) via a second bearing (98). The third straight rod (93) is connected to the first straight rod (33) inside the tank body (1) via a first pulley (32) and a second pulley (38). The pulley (92) drives the transmission. The bottom end of the third straight rod (93) is connected to the first bevel gear (94). The buffer gas tank (10) is equipped with a motor (96). The motor (96) is provided with a motor connecting rod (99). The second bevel gear (95) is nested in the middle of the motor connecting rod (99) and meshes with the first bevel gear (94). The motor connecting rod (99) and the fourth straight rod (85) are driven by the third pulley (82) and the fourth pulley (97).

3. The vacuum buffer tank for Roots vacuum unit according to claim 1, characterized in that: The cyclone separator (2) has an air inlet (21) at one end and an air outlet (22) at the other end, which is connected to the tank (1). A dust hopper (23) is provided below the cyclone separator.

4. The vacuum buffer tank for Roots vacuum unit according to claim 1, characterized in that: A fan (83) is installed at one end of the fourth straight rod (85) inside the buffer tank (10), and an exhaust port (11) is installed on one side of the buffer tank (10).

5. The vacuum buffer tank for Roots vacuum unit according to claim 1, characterized in that The tank (1) and the buffer gas tank (10) are fixed by the first inclined bracket (12) and the second inclined bracket (13).

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