Variable-pitch screw sand conveying auger for sand mixing truck
A variable-pitch, sand-mixing vehicle technology, applied in the direction of conveyors, transportation, packaging, packaging, etc., can solve the problems of difficulty in improving control accuracy, unstable sand delivery performance, and large fluctuations in output sand volume, achieving small fluctuations and friction The effect of small force and fast sand feeding speed
Active Publication Date: 2017-09-12
INST OF SINOPEC OILFIELD EQUIP CORP +1
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Problems solved by technology
When the existing screw sand conveyor is used on site, the feeding hopper is filled with sand continuously and is in a full state. When the demand for sand is large, it is necessary to increase the rotation speed of the auger shaft. At this time, cavitation often occurs, resulting in The performance of sand delivery is unstable, the amount of output sand fluctuates greatly, and the control accuracy is difficult to improve
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[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0036] It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.
[0037] In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting, or Removably attached, set, or integrally attached, set. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations. The terms "landscape", "portrait", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom",...
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The invention discloses a variable-pitch screw sand conveying auger for a sand mixing truck. The variable-pitch screw sand conveying auger comprises a shell, an auger shaft and screw blades. The shell is arranged obliquely, the feeding end of the shell communicates with a feeding hopper, and the discharging end of the shell communicates with a sand mixing tank. The auger shaft is arranged inside the shell and connected with an output shaft of a motor, and the motor drives the auger shaft to rotate. The screw blades are coaxially arranged on the auger shaft and are in clearance fit with the inner wall of the shell. The screw blades comprise a first part located on the lower portion and a second part located on the higher portion. The screw blades of the first part are arranged at equal screw pitches. The screw pitches of the screw blades of the second part are gradually decreased from bottom to top. The screw pitch of the junction between the second part and the first part is not smaller than the screw pitch of the first part. The variable-pitch screw sand conveying auger is high in structural applicability and can be effectively applied to sand conveying equipment of fracturing operation, the performance of the whole equipment is improved, fluctuation of the sand conveying amount is reduced, and the quality of sand conveying operation is improved.
Description
technical field [0001] The invention relates to the technical field of petroleum equipment. More specifically, the present invention relates to a variable-pitch screw sand conveying auger for a sand mixing vehicle. Background technique [0002] Hydraulic fracturing is currently a widely used oil and gas well stimulation measure. During the hydraulic fracturing process, a large amount of sand particles need to be squeezed into the rock formation to support the hydraulically fractured rock formation and establish pore channels for crude oil circulation. As oil ages, production dwindles, and more hydraulic fracturing operations are required to boost production. The sand mixer is the main component of the fracturing equipment, and the screw sand conveyor is its core component. Its performance directly affects the efficiency and quality of on-site construction. [0003] The screw sand conveying device of the existing fracturing operation sand mixing vehicle is also called an au...
Claims
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Login to View More IPC IPC(8): B65G33/26
CPCB65G33/265B65G2201/045
Inventor 李新年宋满华潘灵永
Owner INST OF SINOPEC OILFIELD EQUIP CORP