CN104295484A - Cylinder block structure for improving self-sucking capacity - Google Patents

Cylinder block structure for improving self-sucking capacity Download PDF

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Publication number
CN104295484A
CN104295484A CN201410393487.4A CN201410393487A CN104295484A CN 104295484 A CN104295484 A CN 104295484A CN 201410393487 A CN201410393487 A CN 201410393487A CN 104295484 A CN104295484 A CN 104295484A
Authority
CN
China
Prior art keywords
cylinder
center line
cylinder block
vertical center
plunger hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410393487.4A
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Chinese (zh)
Inventor
邱德波
陈超
赵宁
黄华星
卞胜霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Long Gong (shanghai) Precision Hydraulic Co Ltd
Original Assignee
Long Gong (shanghai) Precision Hydraulic Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Long Gong (shanghai) Precision Hydraulic Co Ltd filed Critical Long Gong (shanghai) Precision Hydraulic Co Ltd
Priority to CN201410393487.4A priority Critical patent/CN104295484A/en
Publication of CN104295484A publication Critical patent/CN104295484A/en
Pending legal-status Critical Current

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Abstract

The invention provides a cylinder block structure for improving the self-sucking capacity. The cylinder block structure for improving the self-sucking capacity comprises a cylinder block body. A cylinder block hole is formed in the upper side of the cylinder block body, a plunger hole with a kidney-shaped cross section is formed in the lower side of the cylinder block body, and the cylinder block hole is communicated with the plunger hole. The cylinder block structure for improving the self-sucking capacity is characterized in that the longitudinal center line of the plunger hole, the longitudinal center line of the cylinder block body and the longitudinal center line of the cylinder block hole are not on the same plane, and namely the plunger hole and the cylinder block hole are staggered. By the adoption of the cylinder block structure for improving the self-sucking capacity, the plunger hole is easily filled with needed hydraulic oil, and the frequency of the air suction phenomenon is reduced.

Description

A kind of housing structure strengthening suction capacity
Technical field
The present invention relates to a kind of housing structure, be applicable to manufacture from the good high-pressure plunger pump of absorption, belong to hydraulic pressure series products field.
Background technique
In the design of plunger pump, cylinder body is one of component of key.Specifically have following requirement: no matter in test, or in complete machine running, cylinder body can not be empty by suction.Otherwise cause 1. a large amount of air easily to be brought in hydraulic system, this is that system institute is unallowed.Because easily form air pocket and cavity in highly pressurised liquid, when being with alveolate hydraulic oil to take the zone of high pressure of pump to, high pressure can make bubble collapse, this just forms the effect being similar to explosion, it makes pump element surface metal peel off, and cause abnormal sound and vibrations, finally cause damage parts 2. there is no the lubrication of fluid in cylinder body and plunger motion, form intermetallic dry friction.Cause wearing and tearing each other, finally damage.
Summary of the invention
The object of the invention is to overcome above-mentioned shortcoming, a kind of housing structure with stronger self-priming performance is provided.
In order to achieve the above object, the invention provides a kind of housing structure strengthening suction capacity, comprise cylinder body body, the upside of described cylinder body body is provided with cylinder bore, the downside of cylinder body body is provided with the plunger hole that cross section is kidney-shaped, described cylinder bore is communicated with plunger hole, it is characterized in that, the vertical center line of the vertical center line of described plunger hole, the vertical center line of cylinder body body and cylinder bore is not at grade (namely plunger hole and cylinder bore shift to install).
Preferably, the angle β (i.e. error angle) between the plane at the plane at the vertical center line of described cylinder body body and the vertical center line place of cylinder bore and the perpendicular bisector place of the vertical center line of cylinder body body and the lower end surface of plunger hole is 5 ° ~ 8 °.
Preferably, the angle α between the vertical center line of described plunger hole and the vertical center line of cylinder body body is 7 ° ~ 10 °.
Preferably, the angle theta between the longitudinal section along its length of described plunger hole and the vertical center line of cylinder body body is 18 ° ~ 22 °.
Compared with prior art, the invention has the beneficial effects as follows: no matter in stand test, or complete machine uses, and significantly feels that the impact being subject to gas is little a lot.Plunger and cylinder body friction pair obtain fluid and supply timely, and degree of vacuum obtains good control.Thus component are more protected, working life also greatly strengthen.
The present invention adopts the centrifugal structure along power, other both direction increases tilt angle, be conducive to fluid to promote rapidly along hydraulic pressure eddy current direction, improve from absorption, the size of squint angle requires according to maximum speed and housing structure size is determined, sense of rotation is fixing such as turn clockwise time, cylinder body can drive the liquid in rotation of surrounding, produce the trend of eddy current, this trend allow the liquid of pump housing perforate can enter along power, thus make easily to obtain required hydraulic oil in plunger hole, reduce emptying phenomenon.The present invention only needs the initial stage to increase a casting mould expense, processing get up and common cylinder body be all identical, usability is very high, and cost is low.
Accompanying drawing explanation
Fig. 1 a is the housing structure schematic diagram strengthening suction capacity.
Fig. 1 b is the housing structure sectional drawing strengthening suction capacity;
Fig. 1 c is S direction view in Fig. 1 b;
Fig. 1 d is A-A sectional drawing in Fig. 1 a;
Fig. 2 is experimental setup structural drawing;
Fig. 3 a is traditional plunger pump cylinder body sectional drawing;
Fig. 3 b is traditional plunger pump cylinder body structural representation.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
As illustrated in figure 1 c, the housing structure of enhancing suction capacity of the present invention comprises cylinder body body 1, the upside of described cylinder body body 1 is provided with cylinder bore 2, the downside of cylinder body body 1 is provided with the plunger hole 3 that cross section is kidney-shaped, described cylinder bore 2 is communicated with plunger hole 3, and namely plunger hole and cylinder bore do not shift to install the vertical center line of the vertical center line of described plunger hole 3, the vertical center line of cylinder body body 1 and cylinder bore 2 at grade.As shown in Figure 1a, the angle β between the plane at the perpendicular bisector place of the lower end surface of the plane at the vertical center line of described cylinder body body 1 and the vertical center line place of cylinder bore 2 and the vertical center line of cylinder body body 1 and plunger hole 3 and error angle are 7 °.As shown in Figure 1 b, the angle theta between the longitudinal section along its length of described plunger hole 3 and the vertical center line of cylinder body body 1 is 20 °.As shown in Figure 1 d, the angle α between the vertical center line of described plunger hole 3 and the vertical center line of cylinder body body 1 is 6 °.
Embodiment 2
As illustrated in figure 1 c, the housing structure of enhancing suction capacity of the present invention comprises cylinder body body 1, the upside of described cylinder body body 1 is provided with cylinder bore 2, the downside of cylinder body body 1 is provided with the plunger hole 3 that cross section is kidney-shaped, described cylinder bore 2 is communicated with plunger hole 3, and namely plunger hole and cylinder bore do not shift to install the vertical center line of the vertical center line of described plunger hole 3, the vertical center line of cylinder body body 1 and cylinder bore 2 at grade.As shown in Figure 1a, the angle β between the plane at the perpendicular bisector place of the lower end surface of the plane at the vertical center line of described cylinder body body 1 and the vertical center line place of cylinder bore 2 and the vertical center line of cylinder body body 1 and plunger hole 3 and error angle are 8 °.As shown in Figure 1 b, the angle theta between the longitudinal section along its length of described plunger hole 3 and the vertical center line of cylinder body body 1 is 20 °.As shown in Figure 1 d, the angle α between the vertical center line of described plunger hole 3 and the vertical center line of cylinder body body 1 is 10 °.
Comparative example 1
As best shown in figures 3 a and 3b, traditional plunger pump cylinder body comprises cylinder body body 1, the side of cylinder body body 1 is evenly distributed with cylinder bore 2, the other end is evenly distributed with the plunger hole 3 that cross section is kidney-shaped, plunger hole 3 is communicated with cylinder bore 2, plunger hole 3 and cylinder bore 2 one_to_one corresponding, described plunger hole 3 is obliquely installed, at grade, the angle theta between plunger hole 3 longitudinal section along its length and the vertical center line of cylinder body body 1 is 20 ° to the vertical center line of the vertical center line of described plunger hole 3, the vertical center line of cylinder body body 1 and cylinder bore 2.
First theoretical foundation is described, because experiment directly cannot measure the mass flow rate of the self-priming flow of single plunger cavity, is therefore converted suction capacity by head height, so adopt the scheme of graduated cylinder, and the mass flow rate u of self-priming mwith hydraulic head height Z 2pass be:
Z 2={4u m/(πd 2ρ)} 2/ (2g)。
Wherein, u mfor the mass flow rate of self-priming, unit is L/min, Z 2for hydraulic head height, unit is cm; D is graduated cylinder diameter, and the density of unit to be cm, ρ be water, unit is g/cm 3, g is gravity accleration, and unit is cm/s 2.Measure the height value of hydraulic head by test can to convert the suction capacity of plunger cavity itself.
As shown in Figure 2, input mechanical energy, import power into by spline joint by transmission shaft of machine tool 11, drive cylinder body 16 to rotate, graduated cylinder 12 inserts cylinder bore 2 and measures.Fluid 15 is provided with in oil containing device 13.Tested by three kinds of housing structures,
By test result as following table:
The suction lift of different cylinder body under table 1 different rotating speeds
Can be found out by above-mentioned data, this structure of embodiment 2 is far above other 2 kinds.

Claims (4)

1. one kind strengthens the housing structure of suction capacity, comprise cylinder body body (1), the upside of described cylinder body body (1) is provided with cylinder bore (2), the downside of cylinder body body (1) is provided with the plunger hole (3) that cross section is kidney-shaped, described cylinder bore (2) is communicated with plunger hole (3), it is characterized in that, the vertical center line of the vertical center line of described plunger hole (3), the vertical center line of cylinder body body (1) and cylinder bore (2) is not at grade.
2. the housing structure strengthening suction capacity as claimed in claim 1, it is characterized in that, the angle β between the plane at the perpendicular bisector place of the lower end surface of the plane at the vertical center line of described cylinder body body (1) and the vertical center line place of cylinder bore (2) and the vertical center line of cylinder body body (1) and plunger hole (3) is 5 ° ~ 8 °.
3. the housing structure strengthening suction capacity as claimed in claim 1, it is characterized in that, the angle 8 between the vertical center line of described plunger hole (3) and the vertical center line of cylinder body body (1) is 7 ° ~ 10 °.
4. the housing structure strengthening suction capacity as claimed in claim 1, it is characterized in that, the angle theta between the longitudinal section along its length of described plunger hole (3) and the vertical center line of cylinder body body (1) is 18 ° ~ 22 °.
CN201410393487.4A 2014-08-12 2014-08-12 Cylinder block structure for improving self-sucking capacity Pending CN104295484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410393487.4A CN104295484A (en) 2014-08-12 2014-08-12 Cylinder block structure for improving self-sucking capacity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410393487.4A CN104295484A (en) 2014-08-12 2014-08-12 Cylinder block structure for improving self-sucking capacity

Publications (1)

Publication Number Publication Date
CN104295484A true CN104295484A (en) 2015-01-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410393487.4A Pending CN104295484A (en) 2014-08-12 2014-08-12 Cylinder block structure for improving self-sucking capacity

Country Status (1)

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CN (1) CN104295484A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5468503A (en) * 1977-11-10 1979-06-01 Senju Metal Industry Co Cylinder block for plunger pump
JPH112181A (en) * 1997-06-13 1999-01-06 Kayaba Ind Co Ltd Piston pump motor
JP2008075568A (en) * 2006-09-21 2008-04-03 Shin Caterpillar Mitsubishi Ltd Barrel of swash plate type piston pump
CN103147975A (en) * 2013-03-06 2013-06-12 中航力源液压股份有限公司 Method for improving performance of high-speed and heavy-load plunger pump and novel tapered cylinder device
CN103939312A (en) * 2014-04-25 2014-07-23 福州大学 Balanced type double-row large-displacement axial plunger pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5468503A (en) * 1977-11-10 1979-06-01 Senju Metal Industry Co Cylinder block for plunger pump
JPH112181A (en) * 1997-06-13 1999-01-06 Kayaba Ind Co Ltd Piston pump motor
JP2008075568A (en) * 2006-09-21 2008-04-03 Shin Caterpillar Mitsubishi Ltd Barrel of swash plate type piston pump
CN103147975A (en) * 2013-03-06 2013-06-12 中航力源液压股份有限公司 Method for improving performance of high-speed and heavy-load plunger pump and novel tapered cylinder device
CN103939312A (en) * 2014-04-25 2014-07-23 福州大学 Balanced type double-row large-displacement axial plunger pump

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Application publication date: 20150121