A self-rotating disc-sealed screw pump for conveying high-viscosity fluid medium
A technology of fluid medium and sealed screw, which is applied in the direction of rotary piston pump, rotary piston machine, rotary piston/oscillating piston pump components, etc., and can solve the problem of reduced reliability and efficiency, bulky size and complex structure of screw pumps and other problems, to achieve the effect of improving mechanical efficiency, reducing the weight of the pump body, and reducing the size of the pump body
Active Publication Date: 2017-12-26
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology
However, the above two types of screw pumps that use eccentric disc seals require an additional auxiliary connecting device between the two sealing discs to realize the periodic movement of the sealing disc. The structure is relatively complicated, and the volume is relatively large and heavy. The existence of the screw pump greatly reduces the reliability and efficiency of the operation
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[0026] Figure 1-9 It is the best embodiment of the present invention, below in conjunction with attached Figure 1-9 The present invention will be further described.
[0027] Refer to attached figure 1: A self-rotating disc-type sealed screw pump for conveying high-viscosity fluid medium, comprising a screw rotor 2 and a casing 3, the screw rotor 2 is installed in the casing 3, and the two sides of the screw rotor 2 are provided with sealing discs 4, The screw rotor 2 is divided into an inlet threaded section and an engaging pressurized section. The engaging groove 201 and the engaging rib 202 are provided on the engaging pressurized section. Continuous spiral grooves are provided on the inlet threaded section. Specifically, the spiral groove of the inlet threaded section The groove is a threaded groove 203, and the threaded groove 203 can be designed with a variable pitch. Two sets of sealing discs 4 that are symmetrically arranged and eccentrically installed are respectiv...
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The utility model relates to a self-rotating disc type sealed screw pump for conveying high-viscosity fluid medium, which belongs to the technical field of screw pumps. It is characterized in that: the screw rotor (2) is divided into an inlet threaded section and an engaging pressurized section, and two sets of sealing discs (4) arranged symmetrically and eccentrically installed are respectively arranged on both sides of the engaging pressurized section, and the sealing discs (4) It is a disc with an inner circular notch (402) on the edge, and the outer circular edge of the sealing disc (4) forms an engagement pair with the engagement groove (201) of the engaging pressurized section, and the inner circle of the sealing disc (4) The notch (402) forms an engaging pair with the engaging rib (202) engaging the booster section. In the present invention, an inner notch is provided on the sealing disc, and the engagement form is changed, so that the inner notch and the outer edge protrusion of the sealing disc can fully engage with the engaging rib and the engaging groove on the screw rotor respectively, thus forming a self-contained The driving force realizes self-driven rotation, which improves the mechanical efficiency, prolongs the service life and improves its portability.
Description
technical field [0001] The utility model relates to a self-rotating disc-type sealed screw pump for conveying high-viscosity fluid medium, which belongs to the technical field of screw pumps. Background technique [0002] As a positive displacement pump, the single screw pump is a viscous fluid pumping device commonly used in industrial production. Its main purpose is to rely on the meshing pair composed of a screw and a sealing sleeve to achieve periodic changes in the volume of the working chamber to transport fluid. The single screw pump has a series of advantages such as simple structure, stable flow, uniform flow rate of the conveying medium, small pulsation, strong self-priming ability, and strong adaptability to the medium. Therefore, the single screw pump is widely used in oil and gas exploitation and high viscosity oil products. transportation and other fields. However, since the sealing bush is always in a state of friction with the screw rotor during its working ...
Claims
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IPC IPC(8): F04C2/16F04C15/00
CPCF04C2/16F04C15/0007
Inventor 王增丽申迎峰王宗明王振波王君
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)