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Plunger reciprocating pump

A technology of reciprocating pumps and plungers, applied in the field of plunger reciprocating pumps with adjustable flow at multiple output ports, can solve problems such as waste of energy and failure to reach, achieve convenient flow adjustment, large flow adjustment range, and reduce fatigue damage Effect

Active Publication Date: 2012-06-06
NINGBO HELI MECHANICAL PUMP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Energy is wasted if reflux is used to adjust flow
For multi-cylinder reciprocating pumps, if the flow rate of each independent outlet is required to be adjustable, and the adjustment range is large, the adjustment accuracy is high, and the adjustment is convenient, the existing plunger reciprocating pumps cannot meet the above requirements.

Method used

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  • Plunger reciprocating pump
  • Plunger reciprocating pump

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] Such as figure 1 The plunger reciprocating pump shown includes a pump body 2, a plunger 1 fitted in the plunger hole of the pump body, and a suction valve group 3 and a discharge valve group 4 arranged in the pump body 2, a specific embodiment of the present invention The suction valve group 3 and the discharge valve group 4 are ball valves; the pump body 2 is provided with a suction port 5 and a discharge port 6; the pump body 2 has a plunger 1, a suction valve group 3 and a discharge valve group 4 A pump cavity is formed in the middle.

[0025] An adjusting plunger assembly is installed on the pump body 2, and the adjusting plunger assembly maintains the same center line as the main plunger; it includes a sealing body 8, an adjusting plunger 7, a sealing assembly 9, a guide seal sleeve 10, a pressure seal Tight sleeve 11, screw rod ...

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Abstract

The invention relates to a plunger reciprocating pump which comprises a pump body, a plunger, an inhalation valve bank and an exhaust valve bank. The plunger is glidingly matched in a plunger hole of the pump body, the inhalation valve bank and the exhaust valve bank are arranged in the pump body, and a pump cavity is formed among the plunger, the inhalation valve bank and the exhaust valve bank in the pump body. The plunger reciprocating pump is characterized in that an adjusting plunger component kept on the same central line as the plunger is mounted on the pump body and comprises a sealing packing box, an adjusting plunger, a screw, a spring and an adjusting handle, wherein the sealing packing box is mounted on the pump body and is provided with a hole with a valve seat in the center, a sealing component and a guiding sealing sleeve are mounted in the hole, the outer circumferential wall of the adjusting plunger is mounted in the sealing component and the guiding sealing sleeve, the valve surface of the front end of the adjusting plunger is arranged in the pump cavity and matched with the valve seat in the center of the packing sealing box, and the screw is provided with a lug boss at the front end, a cylinder in the middle and external threads at the tail. The invention has the advantages of great adjusting range, high adjusting accuracy and convenient adjustment and is suitable for adjusting the flow rates of a plurality of drain openings of a multi-cylinder reciprocating pump.

Description

technical field [0001] The invention relates to a plunger reciprocating pump, in particular to a plunger reciprocating pump with multiple output ports and adjustable flow, which is suitable for working conditions such as oil field injection. Background technique [0002] The plunger reciprocating pump is a positive displacement pump. The output flow of the pump is related to the diameter of the plunger, the stroke of the pump and the speed of the pump (reciprocations per minute). The method of adjusting the output flow of the pump by replacing the plunger with different diameters is hardly used due to the inconvenience of operation. The output flow of the pump is adjusted by changing the stroke of the plunger, which has high adjustment accuracy, but the structure of the power end is complicated, and it is usually only used in metering pumps. Energy is wasted if reflux is used to adjust flow. At present, most of the existing plunger reciprocating pumps use changing the pump...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B53/00
Inventor 陈明海
Owner NINGBO HELI MECHANICAL PUMP CO LTD
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