Isolating device for plunger slurry pump
A technology for isolating devices and mud pumps, applied to components, pumps, pump components, etc. of pumping devices for elastic fluids, which can solve the problems of low life of sealing packing
Active Publication Date: 2012-06-13
NINGBO HELI MECHANICAL PUMP CO LTD
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- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a method for isolating the mud medium from the plunger and the sealing packing friction pair in order to overcome the problem of low service life of the existing plunger mud pump plunger and sealing packing. Isolation device for plunger mud pump
Method used
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Embodiment Construction
[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0023] See figure 1 Shown isolating device, the plunger 6 in this device is a stepped garden cylinder, and one end that its diameter is big is called main plunger 61, and the little end of diameter is called auxiliary plunger 62. The outside of the main plunger 61 is the main sealing body 7, and the main sealing body 7 is equipped with a first guide sleeve 8 (also called the main front guide sleeve), a second guide sleeve 11 (also called the main rear guide sleeve) , Main seal packing 9 and spacer ring 10. The outside of the auxiliary plunger 62 is an auxiliary sealing body 12 , and the auxiliary sealing body 12 is equipped with a third guide sleeve 15 , a fourth guide sleeve 17 and an auxiliary sealing packing 16 . The first, second, third, and fourth guide sleeves in the main and auxiliary sealing boxes all play a guiding role when the pl...
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The invention relates to an isolating device for a plunger slurry pump. The plunger of the plunger slurry pump is made into stepped cylinder, and comprises a master plunger of large diameter and a secondary plunger of small diameter; and a second inner clearance groove is formed between the peripheral wall of the inner bore of a secondary sealed box body and the peripheral walls of the excircles of the master plunger and the secondary plunger to serve as space for the master plunger to carry out reciprocating motion. The master plunger carries out reciprocating motion to change the volume of the second inner clearance groove. A first check valve and a second check valve which are arranged outside a master sealed box body can adsorb and discharge media. Meanwhile, when the master plunger moves, water medium in a first inner clearance groove is continuously updated, and on the master plunger and master sealed filler, water medium isolates slurry in a liquid tank all the time, thereby greatly prolonging the service lives of the master plunger and the master sealed filler, and greatly improving operation reliability.
Description
technical field [0001] The invention relates to an isolation device of a plunger mud pump. Background technique [0002] The plunger mud pump is a very important fluid machine, which is widely used in petroleum, mines, power plants and other fields. [0003] The plunger mud pump is a positive displacement reciprocating pump, which relies on the plunger that reciprocates in the liquid cylinder to periodically change the volume, and uses the inlet and outlet valves to achieve the purpose of sucking and discharging the medium. Please see attached image 3 As shown, when the plunger 6' moves to the left, the volume 31' in the hydraulic cylinder 3' increases and the pressure decreases, and the mud medium in the suction pipe 1' overcomes the resistance loss of the suction valve 2' and enters under the action of the pressure difference. to the cylinder 31'. When the plunger 6' moves to the right, the mud medium in the hydraulic cylinder 31' is squeezed, and the pressure increases...
Claims
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IPC IPC(8): F04B15/02F04B53/02
Inventor 龚名光陈明海朱海波
Owner NINGBO HELI MECHANICAL PUMP CO LTD