The working principle of the screw pump The screw pump uses the rotation of the screw to suck and drain the liquid. Due to the mutual engagement of the screws and the close fit of the screw to the inner wall of the liner, between the suction and discharge ports of the pump, it is divided into one or more sealed spaces. With the rotation and engagement of the screw, these sealed spaces are continuously formed at the suction end of the pump, and the liquid in the suction chamber is sealed therein, and continuously pushed from the suction chamber in the axial direction of the screw to the discharge end, which is closed in each space. The liquid is continuously discharged, just like a nut is continuously pushed forward when the thread is swung. This is the sealing space enclosed by the screw and the pump casing when the liquid is sucked in the working of the stainless steel single-screw pump. When the driving screw rotates, the active screw rotates. The screw pump seal volume increases the screw pump pressure under the extrusion of the screw and moves in the axial direction. Since the screw is rotating at a constant speed, the liquid outflow rate is also uniform.
The characteristics of the stainless steel single screw pump are: the screw pump has small loss and good economic performance. The pressure is high and uniform, the flow rate is uniform, the rotation speed is high, and it can be directly connected with the prime mover.
The stainless steel single screw pump can transport lubricating oil, transport fuel, and transport various oils and polymers for conveying viscous liquids.
Transport high viscosity media:
Depending on the size of the pump, media with a viscosity of from 37,000 to 200,000 centipoise can be delivered.
Media containing particles or fibers: The particle diameter can be 30 mm (not exceeding the rotor eccentricity). The fiber length can be 350mm (corresponding to the pitch of the 0.4 rotor). The content is generally up to 40% of the medium enthalpy. If the solid matter in the medium is a fine powder, the high content of zui can be transported by 60% or higher.
When the conveying pressure is required to be stable and the inherent structure of the medium is not detrimental, it is ideal to use a single screw pump to transport the zui.
The pump body vibrates or generates noise: the cause is: the pump is not installed firmly or the pump is installed too high; the motor ball bearing is damaged; the pump shaft is bent or not concentric with the motor shaft, and is not parallel.
Treatment method: install the pump or reduce the installation height of the pump; replace the motor ball bearing; correct the curved water pump spindle or adjust the relative position of the pump and the motor.
Drive shaft or motor bearing overheating: Cause: lack of lubricant or bearing cracking.
Treatment: Fill with oil or replace the bearing.
The pump does not produce water:
Cause: The pump body and the suction pipe are not filled with water; the moving water level is lower than the water pump water pipe; the water pipe is broken.
The sealing surface between the screw and the housing is a spatial curved surface. There is a non-sealed area such as ab or de on this curved surface, and a plurality of triangular notches abc, def are formed with the groove portion of the screw. These triangular indentations form a passage for the liquid, allowing the active screw groove A to communicate with the grooves B, C on the driven screw. The grooves B and C are wound along the spiral to the back and communicate with the grooves D and E on the back. Since the grooves D, E and the groove F (which belong to the other head spiral) are joined to each other, there is also a triangular notch a'b'c' similar to the front surface, so D, F, and E will also communicate. In this way, the groove ABCDEA also constitutes a "∞"-shaped sealing space (if a single-head thread is used, the groove will be screwed in the axial direction, and the suction and discharge ports will pass through, failing to form a seal). It is not difficult to imagine that on such a screw, a plurality of independent "∞"-shaped sealed spaces will be formed, each of which occupies an axial length exactly equal to the lead t of the tired rod. Therefore, in order to separate the screw suction and discharge ports, the length of the threaded section of the screw is at least greater than one lead.
The characteristics of the stainless steel single screw pump are: the screw pump has small loss and good economic performance. The pressure is high and uniform, the flow rate is uniform, the rotation speed is high, and it can be directly connected with the prime mover.
The stainless steel single screw pump can transport lubricating oil, transport fuel, and transport various oils and polymers for conveying viscous liquids.
Transport high viscosity media:
Depending on the size of the pump, media with a viscosity of from 37,000 to 200,000 centipoise can be delivered.
Media containing particles or fibers: The particle diameter can be 30 mm (not exceeding the rotor eccentricity). The fiber length can be 350mm (corresponding to the pitch of the 0.4 rotor). The content is generally up to 40% of the medium enthalpy. If the solid matter in the medium is a fine powder, the high content of zui can be transported by 60% or higher.
When the conveying pressure is required to be stable and the inherent structure of the medium is not detrimental, it is ideal to use a single screw pump to transport the zui.
The pump body vibrates or generates noise: the cause is: the pump is not installed firmly or the pump is installed too high; the motor ball bearing is damaged; the pump shaft is bent or not concentric with the motor shaft, and is not parallel.
Treatment method: install the pump or reduce the installation height of the pump; replace the motor ball bearing; correct the curved water pump spindle or adjust the relative position of the pump and the motor.
Drive shaft or motor bearing overheating: Cause: lack of lubricant or bearing cracking.
Treatment: Fill with oil or replace the bearing.
The pump does not produce water:
Cause: The pump body and the suction pipe are not filled with water; the moving water level is lower than the water pump water pipe; the water pipe is broken.
The sealing surface between the screw and the housing is a spatial curved surface. There is a non-sealed area such as ab or de on this curved surface, and a plurality of triangular notches abc, def are formed with the groove portion of the screw. These triangular indentations form a passage for the liquid, allowing the active screw groove A to communicate with the grooves B, C on the driven screw. The grooves B and C are wound along the spiral to the back and communicate with the grooves D and E on the back. Since the grooves D, E and the groove F (which belong to the other head spiral) are joined to each other, there is also a triangular notch a'b'c' similar to the front surface, so D, F, and E will also communicate. In this way, the groove ABCDEA also constitutes a "∞"-shaped sealing space (if a single-head thread is used, the groove will be screwed in the axial direction, and the suction and discharge ports will pass through, failing to form a seal). It is not difficult to imagine that on such a screw, a plurality of independent "∞"-shaped sealed spaces will be formed, each of which occupies an axial length exactly equal to the lead t of the tired rod. Therefore, in order to separate the screw suction and discharge ports, the length of the threaded section of the screw is at least greater than one lead.
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