A cyclone type blowout preventer for a rotary vane vacuum pump

Abstract

The utility model discloses a cyclone type blowout preventer of rotary vane vacuum pump belongs to vacuum pump technical field, including the pump body, and the oil tank of fixed setting on the pump body exhaust end, the top intercommunication of pump body exhaust end is provided with the exhaust valve plate, the top fixed setting of exhaust valve plate is provided with the exhaust component for discharging the gas in the pump body, the top of exhaust component is provided with the baffle, the top fixed setting of oil tank is provided with the exhaust cover of intercommunication, the inside of exhaust cover is provided with cyclone type oil gas separator component, the cyclone type oil gas separator component includes the fixed setting of the intercommunication of oil tank top connection pipe, the two cyclone pieces of fixed setting in the top of connection pipe, the head cover of fixed setting in the top of two cyclone pieces, the utility model can separate the gas and oil that pump body sprays, effectively reduce the oil consumption in the pump body and pollute the environment.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump technology, specifically to a cyclone-type anti-spraying device for a rotary vane vacuum pump. Background Technology

[0002] A rotary vane vacuum pump is a commonly used mechanical vacuum pump. Its working principle involves an eccentrically rotating rotor within the pump chamber and vanes sliding in the rotor slots, compressing the drawn-in gas and expelling it through an exhaust valve. To ensure sealing, lubrication, and heat dissipation, the pump chamber needs to be filled with an appropriate amount of vacuum pump oil.

[0003] A common problem with existing rotary vane vacuum pumps is that during the exhaust process, the compressed gas carries a large amount of oil mist and droplets, which are ejected from the exhaust port of the exhaust valve at high speed. This not only causes continuous consumption of vacuum pump oil, increasing operating costs, but also pollutes the working environment and can even cause oil contamination to precision equipment connected to the vacuum pump. Utility Model Content

[0004] The purpose of this invention is to provide a cyclone-type anti-spraying device for a rotary vane vacuum pump, so as to solve the above-mentioned technical problems to a certain extent.

[0005] To achieve the above objectives, the present invention provides the following technical solution: including a pump body and an oil tank fixedly installed on the exhaust end of the pump body, an exhaust valve plate is provided at the top of the exhaust end of the pump body, an exhaust assembly for discharging gas inside the pump body is fixedly installed at the top of the exhaust valve plate, an oil baffle is provided at the top of the exhaust assembly, an exhaust cover is fixedly installed at the top of the oil tank, and a cyclone oil-gas separator assembly is provided inside the exhaust cover; The cyclone oil-gas separator assembly includes a connecting pipe fixedly disposed on the top of the oil tank, two cyclone vanes fixedly disposed on the top of the connecting pipe, a head cover fixedly disposed on the top of the two cyclone vanes, and a connecting column disposed between the head cover and the connecting pipe for fixed connection.

[0006] Preferably, the exhaust assembly includes a plurality of valve cover seats fixedly disposed on the exhaust valve plate outlet end, an exhaust valve body fixedly disposed inside the valve cover seats and connected to the exhaust valve plate outlet end, and a valve stem fixedly disposed on the top of the oil baffle plate and extending downward at one end to connect with the top of the exhaust valve body.

[0007] Preferably, the four sides of the oil baffle plate protrude downward to form a cover shape, and there is a gap between the oil baffle plate and the air outlet at the top of the valve cover seat.

[0008] Preferably, an S-shaped air duct is formed between the two cyclone vanes, and the two cyclone vanes are respectively located on both sides of the air outlet end of the connecting pipe.

[0009] Preferably, the top of the oil tank has an air outlet, and the bottom air inlet of the connecting pipe is opposite to the air outlet.

[0010] Preferably, an exhaust hole is provided at the middle of the top of the exhaust cover.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: When this utility model is used, the valve cover seat is set vertically so that the discharged gas rushes towards the oil baffle plate set above. The oil baffle plate blocks the sprayed oil-gas mixture, and the oil drips automatically into the oil tank for recycling by gravity. After the first separation, the gas in the oil tank enters the connecting pipe. Two rotating blades make the gas swirle between the head cover and the connecting pipe, further intercepting the oil in the gas, effectively reducing the oil loss inside the pump body and environmental pollution. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0013] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a frontal cross-sectional view of the structure in this embodiment; Figure 3 This is a three-dimensional structural diagram of the cyclone oil-gas separator assembly in this embodiment; Figure 4 This is a schematic diagram of the internal structure of the cyclone oil-gas separator assembly in this embodiment; Figure 5 This is a schematic diagram of the three-dimensional structure of the cyclone blade in this embodiment; Figure 6 This is a three-dimensional structural diagram of the exhaust assembly in this embodiment.

[0014] The attached diagram lists the components represented by each number as follows: 1. Pump body; 2. Oil tank; 3. Exhaust cover; 4. Exhaust port; 5. Cyclone oil-gas separator assembly; 51. Connecting pipe; 52. Cyclone vane; 53. Head cover; 54. Connecting column; 6. Exhaust valve plate; 7. Exhaust assembly; 71. Valve cover seat; 72. Valve stem; 73. Exhaust valve body; 8. Oil baffle plate. Detailed Implementation

[0015] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-6 This utility model provides a technical solution: a cyclone-type anti-spraying device for a rotary vane vacuum pump, including a pump body 1 and an oil tank 2 fixedly installed on the exhaust end of the pump body 1. An exhaust valve plate 6 is provided at the top of the exhaust end of the pump body 1. An exhaust assembly 7 for discharging gas inside the pump body 1 is fixedly installed on the top of the exhaust valve plate 6. An oil baffle plate 8 is provided on the top of the exhaust assembly 7. An exhaust cover 3 is fixedly installed at the top of the oil tank 2. A cyclone-type oil-gas separator assembly 5 is provided inside the exhaust cover 3. The cyclone oil-gas separator assembly 5 includes a connecting pipe 51 fixedly disposed on the top of the oil tank 2, two cyclone blades 52 fixedly disposed on the top of the connecting pipe 51, a head cover 53 fixedly disposed on the top of the two cyclone blades 52, and a connecting post 54 disposed between the head cover 53 and the connecting pipe 51 for fixed connection. When the pump body 1 is vented, the gas is discharged into the valve cover seat 71 through the exhaust valve body 73. The valve cover seat 71 is vertically set so that the discharged gas rushes towards the oil baffle plate 8 set above. The oil baffle plate 8 blocks the sprayed oil-gas mixture. The oil drips automatically into the oil tank 2 for recycling by gravity. After the first separation, the gas in the oil tank 2 enters the connecting pipe 51. If the gas contains a small amount of oil, the two rotating blades 52 make the gas swirle between the head cover 53 and the connecting pipe 51, further intercepting the oil in the gas, effectively reducing the oil loss inside the pump body 1 and the pollution of the environment.

[0017] More preferably, the exhaust assembly 7 includes a plurality of valve cover seats 71 fixedly disposed on the exhaust valve plate 6 exhaust outlet end, an exhaust valve body 73 fixedly disposed inside the valve cover seat 71 and connected to the exhaust valve plate 6 exhaust outlet end, and a valve stem 72 fixedly disposed on the top of the oil baffle plate 8 and extending downward at one end to connect with the top of the exhaust valve body 73. The exhaust valve plate 6 communicates with the pump body 1 and supports multiple valve cover seats 71. When the exhaust value is reached inside the pump body 1, the exhaust valve body 73 exhausts gas through the valve cover seats 71, causing the gas to be ejected upward.

[0018] More preferably, the four sides of the oil baffle 8 protrude downward to form a cover shape, and there is a gap between the oil baffle 8 and the air outlet at the top of the valve cover seat 71. The oil baffle 8 is shaped like a cover to prevent oil in the sprayed gas from spraying out in all directions. A gap is left between the oil baffle 8 and the valve cover seat 71 so that the gas in the valve cover seat 71 is sprayed onto the inside of the oil baffle 8.

[0019] More preferably, an S-shaped air duct is formed between the two cyclone vanes 52, and the two cyclone vanes 52 are respectively located on both sides of the air outlet end of the connecting pipe 51; An S-shaped air duct is formed between the two cyclone vanes 52, allowing the gas to swirl between the two vanes 52, further separating the oil from the gas.

[0020] More preferably, the top of the oil tank 2 is provided with an air outlet, and the bottom air inlet of the connecting pipe 51 is opposite to the air outlet; The vent at the top of the oil tank 2 is opposite to the connecting pipe 51, so that the connecting pipe 51 is connected to the oil tank 2, and gas enters the connecting pipe 51 from the oil tank 2.

[0021] More preferably, the exhaust cover 3 has an exhaust hole 4 at the top center.

[0022] A specific application of this embodiment is as follows: the exhaust valve plate 6 is connected to the pump body 1 and supports multiple valve cover seats 71. When the pump body 1 reaches the exhaust value, the exhaust valve body 73 exhausts gas through the valve cover seat 71, causing the gas to spray upward. The valve cover seat 71 is vertically set so that the exhaust gas rushes towards the oil baffle plate 8 set above. The oil baffle plate 8 blocks the sprayed oil-gas mixture, and the oil drips automatically into the oil tank 2 for recycling due to gravity. After the first separation, the gas in the oil tank 2 enters the connecting pipe 51. If the gas contains a small amount of oil, the two rotating plates 52 cause the gas to swirle between the head cover 53 and the connecting pipe 51, further intercepting the oil in the gas.

[0023] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cyclone-type anti-spraying device for a rotary vane vacuum pump, comprising a pump body (1) and an oil tank (2) fixedly disposed on the exhaust end of the pump body (1), characterized in that: The top of the exhaust end of the pump body (1) is provided with an exhaust valve plate (6), and the top of the exhaust valve plate (6) is fixedly provided with an exhaust assembly (7) for discharging the gas inside the pump body (1). The top of the exhaust assembly (7) is provided with an oil baffle plate (8), and the top of the oil tank (2) is fixedly provided with an exhaust cover (3), and the exhaust cover (3) is provided with a cyclone oil-gas separator assembly (5). The cyclone oil-gas separator assembly (5) includes a connecting pipe (51) fixedly disposed on the top of the oil tank (2), two cyclone blades (52) fixedly disposed on the top of the connecting pipe (51), a head cover (53) fixedly disposed on the top of the two cyclone blades (52), and a connecting column (54) disposed between the head cover (53) and the connecting pipe (51) for fixed connection.

2. The cyclone-type oil spray prevention device for a rotary vane vacuum pump according to claim 1, characterized in that: The exhaust assembly (7) includes a plurality of valve cover seats (71) fixedly disposed on the exhaust valve plate (6) exhaust end, an exhaust valve body (73) fixedly disposed inside the valve cover seat (71) and connected to the exhaust valve plate (6) exhaust end, and a valve stem (72) fixedly disposed on the top of the oil baffle plate (8) and extending downward at one end to connect with the top of the exhaust valve body (73).

3. The cyclone-type anti-spraying device for a rotary vane vacuum pump according to claim 2, characterized in that: The four sides of the oil baffle (8) protrude downward to form a cover shape, and there is a gap between the oil baffle (8) and the air outlet at the top of the valve cover seat (71).

4. The cyclone-type anti-spraying device for a rotary vane vacuum pump according to claim 1, characterized in that: An S-shaped air duct is formed between the two cyclone vanes (52), and the two cyclone vanes (52) are located on both sides of the air outlet of the connecting pipe (51).

5. The cyclone-type anti-spraying device for a rotary vane vacuum pump according to claim 4, characterized in that: The oil tank (2) has an air outlet at the top, and the air inlet at the bottom of the connecting pipe (51) is opposite to the air outlet.

6. The cyclone-type anti-spraying device for a rotary vane vacuum pump according to claim 1, characterized in that: The exhaust cover (3) has an exhaust hole (4) in the middle of its top.

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