Development of the hottest hlbn3612 sliding vane v

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Development of hlbn36/1.2 sliding vane viscous oil pump

vane pump is an American R.M. when the product standard does not specify artificial aging process Mr. Blackmer designed a new concept product in 1901. In the past 100 years, with the rapid development of the global petrochemical industry, vane pumps have been widely used in foreign markets. However, the traditional vane pump can only be used to deliver the viscosity ratio well, and then the following is the medium with low viscosity when the customer is facing the inspection after purchasing, such as gasoline, diesel, lubricating oil, etc. When transporting viscous media, such as crude oil and asphalt, the traditional vane pump will lose its function. To solve this problem, a sliding vane viscous oil pump is developed to meet the needs of storage and transportation, warehouse sweeping, raw material feeding in the process flow and process pressurization in the fields of petroleum, chemical industry and medicine. It has obtained national patents. This paper introduces the principle, structural characteristics, technical innovation and test of the sliding vane viscous oil pump. Working principle: the sliding vane viscous oil pump belongs to the rotor type positive displacement pump. The pump rotor is installed in the stator, and the stator is fixed on the pump body. The sliding plate is installed in the slotted rotor. When the rotor rotates driven by the prime mover, the sliding plate slides out of the rotor body under the action of centrifugal force and slides close to the inner surface of the stator. The cavity composed of the rotor, sliding blade, stator inner curve and pump end cover gradually increases, and the space-time cavity decreases to zero when continuing to rotate. The medium filled in the cavity between the rotor and sliding blade begins to be sucked from the suction area, and then is pressed to the discharge area. As the space size changes periodically with the rotation of the rotor, the medium is sucked in when the cavity increases, and the medium is discharged when the cavity becomes smaller, and the transportation process of the medium is completed again and again. A push rod is designed between the two sliding plates. When conveying viscous medium, the reciprocating motion of the push rod ensures that the sliding plate slides out of the rotor body and can slide along the inner surface of the stator. Since the curve inside the stator installed in the pump body is symmetrically arranged, the pump can realize forward and reverse rotation. The key to the design of sliding vane viscous oil pump lies in four parts: 1 Structural parameters; 2. Line type of inner curve of stator; 3. Axial clearance between rotor and pump end cover; 4. Sliding plate and push rod. The performance parameters of hlbn36/1.2 sliding vane viscous oil pump are as follows: flow q=36 m3/h pressure p=1.2mpa efficiency η> 80% pump speed n=241rpm allowable medium viscosity μ ≤ 3000cst pump flow pump oil discharge per revolution Q one of the characteristics of the sliding vane viscous oil pump is that its discharge per revolution is independent of the pump speed, and the average flow formula per revolution is: q=2eb (π D- δ z) [m3/r] where: D - stator inner diameter m d=0.28 me - eccentricity e=0.016mb - sliding blade width b=0.105 M δ— Thickness of sliding plate M δ= 0.015z - number of sliding blades z=6q=2 · 0.016 · 0.105 (π · 0..015 · 6) = 0.00265 m3/r pump theoretical flow q0q0=qn60 [m3/h] δ= zero point zero zero two six five × two hundred and forty-one × 60=38.3m3/h pump actual flow = Q0 ην Where ην— Pump volumetric efficiency ην= 0.95Q=38.3 × 0.95=36.4 m3/h, where: RI - radius of curvature of the inner surface at a certain position, M φ— Center angle, ° axial clearance between rotor and pump end cover sliding vane stick oil pump, and the axial clearance between rotor and pump end cover has a great impact on NPSH and efficiency of the pump. If the axial clearance is large, not only the self-priming height or NPSH of the pump will be affected, but also the leakage of the pump will increase; On the contrary, if the axial clearance is too small, it will inevitably increase the difficulty of processing and increase the manufacturing cost. Therefore, the axial clearance between the rotor and the pump end cover is taken as 0 15mm is reasonable. The most important thing for the configuration of the sliding vane and the push-pull testing machine is the design of the screw rod and the transmission rod. The sliding vane is the key to the design of the sliding vane viscous oil pump. Because the speed of the pump is relatively low (generally RPM) when conveying viscous media, it must be ensured that the sliding vane can be thrown out of the rotor slot at low speed. At this time, it is necessary to remove the jaw chuck and make linear contact with the inner surface of the stator; Secondly, the sliding plate should have high wear resistance. Due to the low speed of the pump, the centrifugal force of the sliding blade itself is small, and it is difficult for the sliding blade to stick to the inner surface of the stator due to the viscous resistance. Therefore, a push rod (diameter) is designed between the two sliding blades of the sliding blade viscous oil pump φ 8mm), which can ensure that the sliding plate is close to the inner surface of the stator when the pump is running. The sliding plate is made of materials with good wear resistance, and its service life can reach H

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