Piston pump selection essentials and introduction

High-pressure mud transfer and frame filter are the key processes in non-metal production. The mud flows under high pressure and the abrasion is very good. Ordinary pumps can not be used under such working conditions. In order to solve the problem of this process, YB series ceramic hydraulic piston pump produced by Xi'an Whirlpool Machinery Manufacturing Co., Ltd. has the advantages of high outlet pressure, good wear resistance and convenient maintenance. It is the only one that has passed TUV international certification ceramic column Plug pump manufacturers. YB series ceramic hydraulic piston pump was first used in ceramic production to the spray drying tower transmission of mud, and now the production of ceramic spray drying tower does not have a YB series ceramic hydraulic piston pump. At present, the pump is widely used in ceramics, porcelain, non-metallic, chemical and other fields. In order to make everyone better use and use YB series ceramic hydraulic piston pump, now the basic selection methods are described below:

First, the type and classification of the plunger pump The pump is divided into high pressure pump, low pressure high flow pump and variable pump, the same specifications are also divided into ordinary pump and anti-corrosion acid pump. High-pressure pump for long-distance or high-altitude slurry delivery; low-pressure high-flow pump for a stable mass of slurry delivery; variable pump is suitable for use with a variety of filter press filter supporting the use of such pumps with the filter density Increased automatically to make the pressure increase? Flow reduction.

Second, the selection of piston pump YB series piston pump is mainly used for the transmission of ceramic slurry, coal water slurry, kaolin and non-metallic mineral suspension, can also be used for mine slurry, food suspension chemical slurry, magnetic material Of the delivery, delivery of solid content greater than 70%, variable displacement pump equipped with a filter press with high work and energy efficiency. Selection should pay attention to the following points:
1, to determine the medium conditions, the plunger pump medium is not allowed to appear in the large particulate matter, otherwise it will cause work failure, the requirements of iron pollution should be used stainless steel piston pump, acidic or alkaline media should be selected anti-corrosion plunger Pump;
2, to determine a reasonable range of flow, the nominal displacement of the plunger pump model is rated, the appropriate margin should be considered when choosing;
3, determine the applicable pressure level, the rated pressure of the plunger pump can reach 2.0-2.5MPa, with the filter press should be used variable pump, the slurry should be used low pressure pump, to reduce waste;
4, to determine the above parameters, according to the principle of rather big, according to the standard model selection YB series ceramic piston pump;
5, in case of doubt, should call the professional manufacturer, please professional engineering and technical people to help selection.

Third, the use of YB series ceramic piston pump 1, the installation will be placed on the basis of the pump, the level of calibration, with the ground screw can be fixed? There may be no ground screw, to facilitate the replacement of hydraulic oil and flushing mud pipeline, the basis of the pump Should be 10 centimeters above the ground, there should be drains around the foundation.

2, the use of the pump (A) before the start of preparation: Check the fastening of the various components; check the fuel tank level, the level of the oil tank to the oil window engraving shall prevail in summer with N46, N32 in winter with hydraulic oil. High-pressure pump and pump applications above 140 the same type of anti-wear hydraulic oil. Check the pressure gauge range, pressure gauge hydraulic station 0-16MPa, pressure gauge on the air tank should be 0-6MPa range, can not be installed anti.
(B) start: open cooling water; closing, open the switch, jog start button, check the motor steering, should be clockwise, must not be reversed. After checking the correct, then start the motor and pump.

(C) operation adjustment:
(1) adjust the relief valve can adjust the hydraulic pressure, you can adjust the mud pressure, adjust the pressure relief valve should be back on the lock nut, do not open the relief valve each time the stop, hydraulic pressure not higher than 12MPa. Note: The quantitative pump should be low-load start, if the two pumps alternately used, you can stop after the start, do not adjust the relief valve;
(2) adjust the position of the two bumper on the carriage, plunger stroke can be adjusted;
(3) When the plunger and seal ring wear leakage occurs when the mortar, squeeze the pressure ring properly, tight to the mortar is not appropriate, when the pressure ring to the packing box is still leaking slurry contact, the seal ring can be padded sheet. In order to ensure that the seal ring and the plunger concentric, the upper end of the water ring and stuffing box strive to the upper end parallel to the unevenness of not more than 0.5mm;
(4) variable pump and filter press with the use of regulation: adjustment method with the operation of regulation (1).
When the pump is delivered from the factory, the pressure of sending slurry is set to 2.0MPa. If the pressure of the slurry to be sent is lower than 2.0MPa, adjust the overflow counterclockwise to make the pressure reach the required value when the plunger runs slowly.

(D) down (1) Press the stop button, the pump stops.
(2) stop cooling water.
(3) Wash the valve box with water.
3, pump maintenance and wearing parts replacement:

(A) In order to ensure the normal operation of the pump, should pay attention to the following matters:
a, the choice of clean high-quality hydraulic oil, the general filter once in January, three months to replace once metamorphosed timely replacement;
b, the pump can not start without cooling water and work in case of porcelain plunger burst heat and burst heat and the rubber seal ring heat damage, the water also played the role of flushing the plunger to extend the plunger and Seal ring life;
c, the seal ring should not be pressed too tight, not slippery as appropriate;
d, long-term cold pump to stop the pump, pumping the mud should be depleted to prevent cracking of the pump;
e, hydraulic system and mud pipeline seal wear should be promptly replaced;
f, plunger stroke should be as long as possible to the piston does not hit the cylinder cover, quick change is appropriate;
g, when it is seen from the pressure gauge of the air tank that the fluctuation value of the mud pressure is more than 0.2MPa, the pump must be stopped, the valve below should be opened, the mud should be drained, the air should be filled, and the pressure gauge on the air tank can be removed if necessary Upper port flush valve box;
h, regular (about a week) check and flush valve box;
i, bladder accumulator after six months should be filled with nitrogen or argon, inflation pressure of 3.0MPa is appropriate.

(B) wearing parts replacement:
(1) Sealing ring: remove the pressure ring screw, manipulate the relief valve, so that the system gradually increase the oil pressure to promote the piston, the use of mud pressure seal ring loose, the plunger lifted after the pump, remove the piston rod and Plunger screw connection, remove the seal ring, carefully put the plunger into the pump body, with an extremely thin copper around the plunger at the top, the seal ring mounted, one by one to tighten the screws.
(2) Plunger: Same as above, stop the pump when the plunger refers to a higher position, and remove the connecting rod of the piston rod and the plunger. Then pull the plunger and packing together to replace the new plunger, one by one to tighten the screws.
(3) Oil pump: Remove the cover screw and lift the fuel cap. Together with the motor, this action must be careful to prevent the oil filter and tubing from being damaged. Remove the suction and discharge tubing on the pump, and then remove the screw that holds the pump , You can remove the pump.

Precautions:
Flush the valve box and replace parts of them, do not be too tight at the top of the rod, no leakage can be;
Removal of the right cylinder replacement piston on the pin, you should pay attention to the pin must escape the fuel tank under the cover of the gap (oil communication port), otherwise, can not fill the oil and the piston can not be reversed;
Fuel tank parts should always be kept clean, can not be washed with water lid and manifold;
Hydraulic oil to be absolutely clean, be sure to regularly check the quality of oil;
After adjusting the pump pressure, generally do not go to adjust the relief valve, otherwise the original system disorder, prone to failure;
Appear unusual sound, should immediately shut down, check the source of the problem, repair it.

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