CN208669569U - A kind of boosting reciprocating pump fluid end structure - Google Patents
A kind of boosting reciprocating pump fluid end structure Download PDFInfo
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- CN208669569U CN208669569U CN201821468044.7U CN201821468044U CN208669569U CN 208669569 U CN208669569 U CN 208669569U CN 201821468044 U CN201821468044 U CN 201821468044U CN 208669569 U CN208669569 U CN 208669569U
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Abstract
The utility model discloses a kind of boosting reciprocating pump fluid end structures, including liquid cylinder, main stuffing-box, secondary stuffing-box and plunger, sucking valve group and discharge valve group are installed in the liquid cylinder, differential chamber spacer is arranged on the plunger, the plunger includes rear pillar and front pillar, main guide sleeve and primary seal filler are arranged on the rear pillar, the main guide sleeve, primary seal filler and differential chamber spacer are mounted in main stuffing-box, secondary guide sleeve is arranged on the front pillar, secondary sealing filler and secondary round nut, the pair guide sleeve, secondary sealing filler and secondary round nut are mounted in secondary stuffing-box, the pair stuffing-box is mounted in main stuffing-box, the liquid cylinder is provided with pressing sleeve in discharge valve group, high-pressure balancing pipe is connected between the pressing sleeve and differential chamber spacer.The boosting reciprocating pump fluid end structure of the utility model uses the structure of " major-minor sealing ", reduces the cooperation number between component, improves the concentricity of sealing element, improves the service life of plunger and filler.
Description
Technical field
The utility model relates to pump accessories field, more particularly, to a kind of boosting reciprocating pump fluid end structure.
Background technique
It is widely applied currently, reciprocating pump has, in most conditions, the inlet pressure of pump is all close to atmospheric pressure
Power.And under the conditions of some specific, the inlet pressure of pump can be very high, and booster pump is generated with regard to this, but due to being pressurized pump intake
Pressure it is higher always, the Impact direction of the plunger consistent driving end towards pump always can be made, make each friction pair of driving end
Impact direction it is consistent always, and stress is larger, and therefore, the comparison that the secondary lubricating condition of each friction can become is severe, and friction is secondary
The vulnerable part service life it is relatively low.
And reciprocating differential booster pump can improve the secondary lubricating condition of friction, vulnerable part uses the longevity in raising pump drive end
Life.With reference to attached drawing 1, that there are cylinder bodies is more thick and heavy for traditional reciprocating differential booster pump, cylinder body processing is relatively difficult and processing essence
The problem of spending bad guarantee, moreover, two sections of packing seals are respectively in stuffing-box and liquid cylinder, between have passed through multiple components
Mutual cooperation, therefore, it is completely coaxial that gap and mismachining tolerance between components cause packing seal to be difficult to, cause plunger and
The service life of filler is undesirable, needs to be replaced frequently.
Utility model content
One purpose of the utility model is to provide a kind of new solution of boosting reciprocating pump fluid end structure.
The utility model provides a kind of boosting reciprocating pump fluid end structure, including liquid cylinder, main stuffing-box, secondary stuffing-box
And plunger, sucking valve group and discharge valve group are installed in the liquid cylinder, are arranged with differential chamber spacer, the difference on the plunger
Differential chamber is formed between dynamic chamber spacer and plunger, the plunger includes rear pillar and front pillar, and the preceding column diameter is less than rear pillar simultaneously
Coaxially it is arranged, is arranged with main guide sleeve and primary seal filler, the main guide sleeve, primary seal from left to right on the rear pillar
Filler and differential chamber spacer are mounted in main stuffing-box, are arranged with secondary guide sleeve, secondary sealing filler on the front pillar from left to right
And secondary round nut, the pair guide sleeve, secondary sealing filler and secondary round nut are mounted in secondary stuffing-box, the pair stuffing-box peace
In main stuffing-box, the differential chamber spacer left end is abutted with primary seal filler, the differential chamber spacer right end respectively with pair
Guide sleeve, secondary stuffing-box abut, and the liquid cylinder is provided with pressing sleeve in discharge valve group, between the pressing sleeve and differential chamber spacer
It is connected with high-pressure balancing pipe, the differential chamber spacer is equipped with the intercommunicating pore for being connected to high-pressure balancing pipe with differential chamber, the pressing sleeve
Phase perforation equipped with the outlet that the outlet of valve group, high-pressure balancing tube inlet and pump will be discharged.
Preferably, it is formed with outer flow passage on the peripheral wall of the differential chamber spacer, the outer flow passage is connected with high-pressure balancing pipe
Logical, outer flow passage is connected to by the intercommunicating pore with differential chamber.
Preferably, the liquid cylinder is connected with stud, and the stud is connected with transmission case body, the transmission case by nut
Main stuffing-box is locked together by body with liquid cylinder.
Preferably, the main stuffing-box right end is threaded with main round nut, and the main round nut is by secondary stuffing-box, differential
Chamber spacer, primary seal filler and dominating is pressed in main stuffing-box to set, and the pair round nut is threadedly coupled with pair stuffing-box, institute
It states secondary round nut secondary sealing filler, secondary guide sleeve are pressed in secondary stuffing-box, the outer circle of the main round nut and secondary round nut
Multiple dismounting holes are uniformly provided on peripheral wall.
Preferably, the main stuffing-box has plunger cavity, and the left end of the main stuffing-box is formed with flange around plunger cavity,
The main stuffing-box passes through flange and fluid cylinder mates.
Preferably, the primary seal filler and secondary sealing filler are provided with multiple, the primary seal filler and secondary sealing
Filler spacer ring is equipped between filler.
The boosting reciprocating pump fluid end structure of the utility model uses the structure of " major-minor sealing ", cleverly going out pump
Mouth pressure introduces between two sections of sealings, and two sections of sealings reduce the cooperation number between component, improve close all in stuffing-box
The concentricity of sealing, structure is more safe and reliable, improves the service life of plunger and filler, and parts replacement is more square
Just.Meanwhile new construction significantly reduces the weight of liquid cylinder, has saved material；Meanwhile the processing of liquid cylinder is more easier, and adds
Work precision is also improved.
By the detailed description referring to the drawings to the exemplary embodiment of the utility model, the utility model it is other
Feature and its advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiments of the present invention, and
And together with its explanation for explaining the principles of the present invention.
Fig. 1 is the structural schematic diagram of reciprocating differential booster pump traditional in background technique；
Fig. 2 is the structural schematic diagram of boosting reciprocating pump fluid end structure provided by the utility model.
Wherein, 1, liquid cylinder, 2, main stuffing-box, 3, secondary stuffing-box, 4, plunger, 5, stud, 6, sucking valve group, 7, dump valve
Group, 8, pressing sleeve, 9, differential chamber spacer, 10, differential chamber, 11, high-pressure balancing pipe, 12, outer flow passage, 13, main guide sleeve, 14, master it is close
Packing material, 15, secondary guide sleeve, 16, secondary sealing filler, 17, secondary round nut, 18, main round nut.
Specific embodiment
The various exemplary embodiments of the utility model are described in detail now with reference to attached drawing.It should also be noted that unless another
It illustrates outside, the component and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited
The scope of the utility model processed.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical
Novel and its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
It should be noted that the positional terms such as left and right, upper and lower, forward and backward in the utility model, are only relatively general each other
Thought is reference with reference to the accompanying drawings or with the normal operating condition of product, and be should not be regarded as restrictive
's.In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
With reference to Fig. 2, the utility model provides a kind of boosting reciprocating pump fluid end structure.
The boosting reciprocating pump fluid end structure includes liquid cylinder 1, main stuffing-box 2, secondary stuffing-box 3 and plunger 4, liquid cylinder 1
Right end is connected with stud 5, and the stud 5 is connected with transmission case body (not shown) by nut, and the transmission case body will be led
Stuffing-box 2 is locked at 1 right end of liquid cylinder, and pressing plate has also been bolted in 1 left end of liquid cylinder.Liquid cylinder 1 has cavity, described
2 letter of primary seal filler has the plunger cavity being connected to liquid cylinder 1, and the extension bar of the driving end of the connection pump of plunger 4, plunger 4 can be in chamber
The left end of side-to-side movement in body and plunger cavity, the main stuffing-box 2 is formed with flange around plunger cavity, and the main stuffing-box 2 is logical
Flange is crossed to match with liquid cylinder 1.Sealing ring is additionally provided between liquid cylinder 1 and main stuffing-box 2.
It is separately installed with discharge valve group 7 and sucking valve group 6 in upper and lower part in liquid cylinder 1, the sucking setting of valve group 6 is pumping
Arrival end, the outlet end of pump is arranged in discharge valve group 7, and the liquid cylinder 1 is provided with pressing sleeve 8, the column in discharge valve group 7
Be arranged with differential chamber spacer 9 on plug 4, be formed with differential chamber 10 between the differential chamber spacer 9 and plunger 4, the pressing sleeve 8 with it is poor
High-pressure balancing pipe 11 is connected between dynamic chamber spacer 9, the differential chamber spacer 9, which is equipped with, connects high-pressure balancing pipe 11 and differential chamber 10
Logical intercommunicating pore, the pressing sleeve 8 are equipped with the outlet of the outlet that valve group 7 will be discharged, 11 entrance of high-pressure balancing pipe and pump
Phase perforation.Differential chamber is flowed into from high-pressure balancing pipe 11 in order to facilitate liquid, is formed with outer flow passage on the peripheral wall of differential chamber spacer 9
12, the outer flow passage 12 is connected with high-pressure balancing pipe 11, and outer flow passage 12 is connected to by the intercommunicating pore with differential chamber 10.
The plunger 4 of the utility model includes rear pillar and front pillar, and the preceding column diameter is less than rear pillar and is coaxially arranged, institute
It states and is arranged with main guide sleeve 13 and primary seal filler 14 on rear pillar from left to right, the main guide sleeve 13,14 and of primary seal filler
Differential chamber spacer 9 is mounted in main stuffing-box 2, is arranged with secondary guide sleeve 15, secondary sealing filler 16 on the front pillar from left to right
And secondary round nut 17, the pair guide sleeve 15, secondary sealing filler 16 and secondary round nut 17 are mounted in secondary stuffing-box 3, described
Secondary stuffing-box 3 is mounted in main stuffing-box 2, and differential 9 left end of chamber spacer is abutted with primary seal filler 14, the differential chamber every
9 right ends are covered to abut with secondary guide sleeve 15, secondary stuffing-box 3 respectively.
Wherein, main 2 right end of stuffing-box is threaded with main round nut 18, and the main round nut 18 is by secondary stuffing-box 3, differential
Chamber spacer 9, primary seal filler 14 and main guide sleeve 13 are pressed in main stuffing-box 2, the pair round nut 17 and 3 spiral shell of secondary stuffing-box
Secondary sealing filler 16, secondary guide sleeve 15 are pressed in secondary stuffing-box 3 by line connection, the pair round nut 17, the main round nut
18 and secondary round nut 17 outer circle wall on be uniformly provided with multiple dismounting holes.
In addition, primary seal filler 14 and secondary sealing filler 16 are provided with multiple, the primary seal filler 14 and secondary sealing
Filler spacer ring is equipped between filler 16.
The plunger 4 of the boosting reciprocating pump fluid end structure of the utility model is reciprocating in left-right direction in figure,
It at arrival end A and is high pressure at the C of outlet end, and pressure is higher at the C of outlet end, pressure at the C of outlet end in the operational process of pump
Pressure at consistently greater than pump intake end A is connected at the C of outlet end with the differential chamber 10 of pump, therefore the pressure in differential chamber 10 is always
Equal to pressure at the C of outlet end.Wherein, plunger 4 moves right as suction stroke, at the pump chamber B in generate volume variation, at this point,
Sucking valve group 6 is opened under the effect of the pressure, and discharge valve group 7 is closed, and liquid is flowed by pump intake end A under the effect of the pressure
At pump chamber B, while effect of the plunger 4 pumped by pressure at pump chamber B, the power F1 to figure right direction is born, in differential chamber 10
In, effect of the annular surface (i.e. rear pillar) of stage columnar plug 4 by pressure in differential chamber 10 generates the power F2, power F1 to figure left side
With F2 sizableness, power F1 is balanced by F2；Plunger 4 moves downward as stroke is discharged, and valve group 7 is discharged at this time in the effect of pressure
Lower unlatching, sucking valve group 6 are closed, and liquid enters pump through discharge valve group 7 since the volume variation at pump chamber B is forced out pump chamber
One action stroke is completed at chamber B.
The boosting reciprocating pump fluid end structure of the utility model uses the structure of " major-minor sealing ", cleverly going out pump
Mouth pressure introduces between two sections of sealings, and two sections of sealings reduce the cooperation number between component, improve close all in stuffing-box
The concentricity of sealing, structure is more safe and reliable, improves the service life of plunger and filler, and parts replacement is more square
Just.Meanwhile new construction significantly reduces the weight of liquid cylinder, has saved material；Meanwhile the processing of liquid cylinder is more easier, and adds
Work precision is also improved.
Although being described in detail by some specific embodiments of the example to the utility model, this field
It is to be understood by the skilled artisans that example above merely to be illustrated, rather than in order to limit the scope of the utility model.This
Field it is to be understood by the skilled artisans that can not depart from the scope of the utility model and spirit in the case where, to above embodiments
It modifies.The scope of the utility model is defined by the following claims.
Claims (6)
1. a kind of boosting reciprocating pump fluid end structure, which is characterized in that including liquid cylinder, main stuffing-box, secondary stuffing-box and plunger,
Sucking valve group and discharge valve group are installed in the liquid cylinder, are arranged with differential chamber spacer on the plunger, the differential chamber every
Differential chamber is formed between set and plunger, the plunger includes rear pillar and front pillar, and the preceding column diameter is less than rear pillar and same with it
Axis setting, is arranged with main guide sleeve and primary seal filler on the rear pillar from left to right, the main guide sleeve, primary seal filler and
Differential chamber spacer is mounted in main stuffing-box, is arranged with secondary guide sleeve, secondary sealing filler and pair on the front pillar from left to right
Round nut, the pair guide sleeve, secondary sealing filler and secondary round nut are mounted in secondary stuffing-box, and the pair stuffing-box is mounted on master
In stuffing-box, the differential chamber spacer left end is abutted with primary seal filler, the differential chamber spacer right end respectively with secondary guide sleeve,
Secondary stuffing-box abuts, and the liquid cylinder is provided with pressing sleeve in discharge valve group, is connected between the pressing sleeve and differential chamber spacer
High-pressure balancing pipe, the differential chamber spacer are equipped with the intercommunicating pore for being connected to high-pressure balancing pipe with differential chamber, and the pressing sleeve is equipped with will
The phase perforation of the outlet of the outlet of valve group, high-pressure balancing tube inlet and pump is discharged.
2. boosting reciprocating pump fluid end structure according to claim 1, which is characterized in that the peripheral wall of the differential chamber spacer
On be formed with outer flow passage, the outer flow passage is connected with high-pressure balancing pipe, and outer flow passage is connected to by the intercommunicating pore with differential chamber.
3. the fluid end structure of reciprocating pump according to claim 1, which is characterized in that the liquid cylinder is connected with stud,
The stud is connected with transmission case body by nut, and main stuffing-box is locked together by the transmission case body with liquid cylinder.
4. the fluid end structure of reciprocating pump according to claim 3, which is characterized in that the main stuffing-box right end screw thread connects
It is connected to main round nut, the main round nut is by secondary stuffing-box, differential chamber spacer, primary seal filler and dominates and is pressed on master to set and fills out
Expect in letter, the pair round nut is threadedly coupled with secondary stuffing-box, and secondary sealing filler, secondary guide sleeve are pressed on by the pair round nut
In secondary stuffing-box, multiple dismounting holes are uniformly provided on the outer circle wall of the main round nut and secondary round nut.
5. the fluid end structure of reciprocating pump according to claim 3, which is characterized in that the main stuffing-box has plunger
The left end of chamber, the main stuffing-box is formed with flange around plunger cavity, and the main stuffing-box passes through flange and fluid cylinder mates.
6. boosting reciprocating pump fluid end structure according to claim 1-5, which is characterized in that the primary seal is filled out
Material and secondary sealing filler are provided with multiple, are equipped with filler spacer ring between the primary seal filler and secondary sealing filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821468044.7U CN208669569U (en) | 2018-09-09 | 2018-09-09 | A kind of boosting reciprocating pump fluid end structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821468044.7U CN208669569U (en) | 2018-09-09 | 2018-09-09 | A kind of boosting reciprocating pump fluid end structure |
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| Publication Number | Publication Date |
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| CN208669569U true CN208669569U (en) | 2019-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821468044.7U Active CN208669569U (en) | 2018-09-09 | 2018-09-09 | A kind of boosting reciprocating pump fluid end structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377404A (en) * | 2020-11-20 | 2021-02-19 | 江苏核电有限公司 | Nuclear-grade plunger pump sealing assembly and installation and adjustment method thereof |
| CN113446182A (en) * | 2021-08-31 | 2021-09-28 | 宁波合力机泵股份有限公司 | Reciprocating plunger pump for conveying liquid CO2 in dense state |
| CN115628210A (en) * | 2022-12-22 | 2023-01-20 | 宁波合力机泵股份有限公司 | Reciprocating pump hydraulic end capable of reducing alternating pressure of front screw plug |
-
2018
- 2018-09-09 CN CN201821468044.7U patent/CN208669569U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377404A (en) * | 2020-11-20 | 2021-02-19 | 江苏核电有限公司 | Nuclear-grade plunger pump sealing assembly and installation and adjustment method thereof |
| CN112377404B (en) * | 2020-11-20 | 2021-12-17 | 江苏核电有限公司 | Nuclear-grade plunger pump sealing assembly and installation and adjustment method thereof |
| CN113446182A (en) * | 2021-08-31 | 2021-09-28 | 宁波合力机泵股份有限公司 | Reciprocating plunger pump for conveying liquid CO2 in dense state |
| CN113446182B (en) * | 2021-08-31 | 2021-11-12 | 宁波合力机泵股份有限公司 | Reciprocating plunger pump for conveying liquid CO2 in dense state |
| CN115628210A (en) * | 2022-12-22 | 2023-01-20 | 宁波合力机泵股份有限公司 | Reciprocating pump hydraulic end capable of reducing alternating pressure of front screw plug |
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