Self-propelled rotary disc-type sealing 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: 2016-10-26
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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A self-propelled rotary disc-type sealing screw pump for conveying a high-viscosity fluid medium belongs to the technical field of screw pumps and is characterized in that a screw rotor (2) is divided into an entry thread section and an engaging supercharged section. Two sides of the engaging supercharged section are respectively provided with two seal discs (4) which are symmetrically and eccentrically installed. The seal discs (4) are discs with inner circular notches (402) arranged at the edge. The external circle edge of the seal discs (4) and an engaging groove (201) of the engaging supercharged section form an engagement pair. The inner circular notch (402) of the seal disc (4) and an engaging flange (202) of the engaging supercharged section form an engagement pair. The seal disc is provided with the inner circular notch to change the engagement form, and the inner circular notch and an outer bulge of the seal disc can be respectively and completely engaged with the engaging flange and the engaging groove of the screw rotor. Thus, self-driving force is formed to realize self-driven rotation, mechanical efficiency is raised, service life is prolonged, and portability is improved.
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)