CN107165797B - Reciprocating pump with optimized connection of power end and hydraulic end - Google Patents
Reciprocating pump with optimized connection of power end and hydraulic end Download PDFInfo
- Publication number
- CN107165797B CN107165797B CN201710588373.9A CN201710588373A CN107165797B CN 107165797 B CN107165797 B CN 107165797B CN 201710588373 A CN201710588373 A CN 201710588373A CN 107165797 B CN107165797 B CN 107165797B
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- inclined plane
- plunger
- pump
- pump body
- reciprocating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/02—Packing the free space between cylinders and pistons
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention relates to a reciprocating pump for optimizing connection between a power end and a hydraulic end, wherein a surface of a machine body, which is connected with a pump body, is designed into an inclined surface, and the inclined surface and the central line of the machine body form an obtuse angle; the surface of the pump body, which is jointed with the body, is also designed into an inclined plane with the same angle, so that the inclined plane of the body is jointed and matched with the inclined plane of the pump body, and a positioning structure consisting of a positioning hole and a positioning ring is arranged between the inclined plane of the body and the inclined plane of the pump body, so that the body and the pump body are positioned and fixed with each other, and the central line of the plunger and the central line of the crosshead are kept on the same line. The power end and the hydraulic end of the traditional reciprocating pump are connected with the binding face and are in a 90-degree vertical connection structure, the power end and the hydraulic end are connected with each other and are changed into inclined face connection, so that the arrangement of parts such as a plunger, a filler and a guide sleeve in a pump body is facilitated, a sealing box body is not required to be fixed on the pump body, the length of the overall power end can be reduced, the box body is fixed on the machine body by a positioning ring, a plurality of positioning references are reduced, the assembly precision is improved, and the service life of easily damaged parts is prolonged.
Description
Technical Field
The present invention relates to a reciprocating pump.
Background
Reciprocating pumps can be generally classified as piston-type, piston-type. The plunger piston and the filler are sealed to form a friction pair, the piston leather cup and the cylinder sleeve are friction pairs, and the two are selected for the requirement of a medium. The power end is a crank, connecting rod and crosshead connecting structure, and the pump can be divided into a power end, a hydraulic end, a prime motor of the assembly part and a transmission mechanism to form a prying type device. The binding surfaces of a power end and a hydraulic end of a conventional reciprocating pump are vertically connected at 90 degrees, and are positioned on a machine body of the power end by virtue of the excircle of a sealing box body (a pump body at the hydraulic end and a cylindrical pin of the machine body are also adopted for positioning). The plane of the pump body at the hydraulic end is attached to the vertical plane of the machine body to ensure that the motion of the crosshead at the power end and the plunger in the sealing box at the hydraulic end keep parallel straight lines. Due to the traditional structure of the conventional reciprocating pump, the innovative development and the light-weight design of the reciprocating pump are limited, the innovative driving under the current new economic development is realized, a new idea of light-weight design is created to meet the requirements of energy conservation and emission reduction, and the traditional reciprocating pump is an important measure for optimizing the appearance, the weight and the structure.
Disclosure of Invention
The invention aims to solve the technical problem of providing a reciprocating pump for optimizing the connection of a power end and a hydraulic end aiming at the current situation of the prior art, which changes the structure that the connecting and binding surfaces of the power end and the hydraulic end of the traditional reciprocating pump are vertically connected by 90 degrees, so as to shorten the length of the power end, further improve the strength and the rigidity of a machine body, improve the assembly precision and prolong the service life of vulnerable parts.
The technical scheme adopted by the invention for solving the technical problems is as follows: the reciprocating pump with the optimized power end connected with the hydraulic end comprises a machine body of the power end and a pump body of the hydraulic end, wherein a crankshaft and a transmission assembly driven by the crankshaft to do radial reciprocating motion are arranged in the machine body, and the transmission assembly comprises a connecting rod and a crosshead; be equipped with plunger reciprocating motion chamber in the pump body, the intracavity is equipped with filler assembly and plunger, the plunger is connected its characterized in that with the drive assembly of power end: the surface of the body, which is jointed with the pump body, is designed into an inclined surface, and the inclined surface and the center line of the body form an obtuse angle; the surface of the pump body, which is jointed with the body, is also designed into an inclined plane with the same angle, so that the inclined plane of the body is jointed and matched with the inclined plane of the pump body, and a positioning structure is arranged between the inclined plane of the body and the inclined plane of the pump body, so that the body and the pump body are positioned and fixed with each other, and the central line of the plunger and the central line of the crosshead are kept on the same line.
The positioning structure can be implemented by adopting the following scheme that corresponding concave annular grooves are respectively arranged on the inclined plane of the machine body and the inclined plane of the pump body, the annular groove on the inclined plane of the machine body and the annular groove on the inclined plane of the pump body are combined to form a positioning hole for arranging a positioning ring, the positioning ring is arranged in the positioning hole, the annular groove on the inclined plane of the machine body is used as a positioning reference of the pump body and the machine body, and the pump body and the machine body are positioned and fixed by the positioning ring.
The positioning hole and the positioning ring placed in the positioning hole can adopt a mode that the section appearance is rectangular and is vertical to the center line of a reciprocating cavity of the machine body or the plunger piston, and also can adopt a mode that the section appearance is parallelogram and is parallel to the inclined plane of the machine body or the pump body, and the method specifically comprises the following steps:
The annular groove on the inclined plane of the machine body is in a step shape which is concentric with and communicated with the plunger channel in the machine body, the annular groove on the inclined plane of the pump body is concentric with and separated from the reciprocating operation cavity of the plunger, and the bottom plane of the annular groove on the inclined plane of the machine body and the bottom plane of the annular groove on the inclined plane of the pump body are vertical to the central line of the plunger channel or the central line of the reciprocating operation cavity of the plunger.
The annular groove on the inclined plane of the machine body is in a step shape which is concentric with and communicated with a plunger channel in the machine body, the annular groove on the inclined plane of the pump body is concentric with and separated from the reciprocating running cavity of the plunger, and the bottom plane of the annular groove on the inclined plane of the machine body and the bottom plane of the annular groove on the inclined plane of the pump body are both parallel to the inclined plane of the machine body or the inclined plane of the pump body.
The packing assembly arranged in the plunger reciprocating operation cavity can comprise a lubricating oil sealing assembly and a medium sealing assembly which are arranged from outside to inside, and the lubricating oil sealing assembly and the medium sealing assembly are separated by a step arranged in the plunger reciprocating operation cavity.
The lubricating oil seal assembly can sequentially comprise an oil seal adjusting screw cap, an oil seal filler and an oil pressure ring guide sleeve; the medium sealing assembly can sequentially comprise a medium pressure ring, a medium sealing filler and a filler sealing automatic compensation mechanism consisting of a spring seat and a compensation spring.
The oil seal filler and the medium seal filler can adopt filler with a rectangular cross section and filler with a parallelogram cross section, namely, two end faces of the oil seal filler and the medium seal filler are designed into inclined planes parallel to the inclined plane of the pump body, correspondingly, one surfaces of the oil seal adjusting nut and the oil pressure ring guide sleeve which are respectively contacted with the oil seal filler are designed into inclined planes with the same angle, and one surfaces of the medium pressure ring and the spring seat which are respectively contacted with the medium seal filler are designed into inclined planes with the same angle.
In order to further ensure the plunger and the filler to achieve the effects of sealing and prolonging the service life, the pump body is also provided with a filler sealing manual compensation mechanism which comprises an adjusting flange arranged on the pump body and an adjusting screw rod connected on the adjusting flange, and the outer diameter circumference of the adjusting screw rod is provided with a scale groove and is limited and fixed by a locking claw; the front end of the medium sealing assembly is positioned by the step, the rear end of the medium sealing assembly is positioned by a flow distribution sleeve arranged in the reciprocating operation cavity of the plunger, the tail part of the flow distribution sleeve is provided with a sealing part, and the medium sealing assembly can reciprocate in the reciprocating operation cavity of the plunger under the action of an adjusting screw rod. A plurality of medium discharge grooves are formed between the inner hole and the outer diameter of the shunt sleeve to reduce the flow velocity of media in the inner hole of the shunt sleeve.
Compared with the prior art, the invention has the advantages that: the invention changes the binding surface of the power end and the hydraulic end into the inclined surface connection, thereby shortening the length of the power end and improving the strength and the rigidity of the machine body; because the binding face of the pump body at the hydraulic end is designed as an inclined plane, enough positions are reserved, the arrangement of parts such as a plunger, a filler and a guide sleeve in the pump body is facilitated, a sealing box body is not required to be fixed on the pump body, the length of the overall power end can be reduced, the length of the box body is fixed on the machine body by a positioning ring, a plurality of positioning references are reduced, the assembly precision is improved, and the service life of a wearing part is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic view of the fuselage structure of embodiment 1 of the present invention.
Fig. 3 is a right side view of the fuselage of fig. 2.
Fig. 4 is a schematic diagram of a pump body structure according to embodiment 1 of the present invention.
FIG. 5 is a left side view of the pump body of FIG. 4.
Fig. 6 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 7 is a schematic view of the structure of the fuselage of embodiment 2 of the present invention.
Fig. 8 is a right side view of the fuselage of fig. 7.
Fig. 9 is a schematic diagram of a pump body structure according to embodiment 2 of the present invention.
FIG. 10 is a left side view of the pump body of FIG. 9.
Fig. 11 is an enlarged schematic cross-sectional view of an oil seal packing and a media seal packing according to embodiment 2 of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example 1: referring to fig. 1, the reciprocating pump of the present invention includes a power end and a fluid end, wherein:
The power end mainly comprises a machine body 1, a crankshaft and a transmission assembly driven by the crankshaft to do radial reciprocating motion are arranged in the machine body 1, the transmission assembly mainly comprises a connecting rod, a cross head and the like, and the crankshaft, the transmission assembly and the like can be arranged in the machine body by adopting a known technology, so that the detailed description of the parts is omitted. The power end of the invention mainly improves the machine body 1, the surface of the machine body 1, which is jointed with the pump body 2, is changed from a conventional surface which is vertical to a central line into an inclined surface, and the inclined surface has an inclination angle which is more than 90 degrees, namely forms an obtuse angle with the central line of the machine body (or the central line of a plunger channel in the machine body). The body 1 of the present embodiment is exemplified by 2 sets of transmission components, that is, two plunger channels 101 (two plungers 19 are provided on the corresponding pump body) are provided on the body 1, and correspond to two plunger reciprocating cavities 201 on the pump body one by one.
Referring to fig. 2 and 3, the surface of the body 1 that is attached to the pump body 2 is designed as an inclined surface 102 that is inclined toward the pump body side, and the inclination angle of the inclined surface 102 is greater than 90 degrees (i.e., an included angle greater than 90 degrees is formed with the center line of the plunger channel). The body inclined plane 102 is used as a reference plane for positioning the pump body, an inward concave annular groove 103 is respectively arranged in the plunger channel holes at two sides, the annular groove 103 is in a step shape concentric with and communicated with the plunger channel 101, and the bottom plane 104 of the groove is vertical to the central line of the plunger channel.
The power end machine body 1 and the hydraulic end pump body 2 of the invention adopt the locating ring 3 to locate and fix the coaxiality of the two, so the annular groove 103 is used as a locating reference hole and corresponds to the annular groove 203 arranged on the inclined plane of the pump body, and the locating ring 3 is placed in the locating hole formed after involution.
Referring to fig. 4 and 5, the hydraulic end mainly includes a pump body 2, a plunger reciprocating cavity 201 is respectively disposed on the left and right sides of the pump body, a packing assembly and a plunger 19 are respectively disposed in the cavities, and the plunger is connected with a transmission assembly of the corresponding power end. As for the component structures such as the combination valve on the pump body, which are not expanded here, they can adopt the known technology or the new technology improved (not limited to the embodiment shown in fig. 1), without affecting the achievement of the object of the present invention.
The surface of the pump body 2, which is attached to the body 1, is designed to be an inclined surface 202 with the same inclination angle as the inclined surface of the body, that is, the inclined surface 202 and the center line of the plunger reciprocating cavity also form an included angle larger than 90 degrees, and the pump body inclined surface 102 is attached and matched with the inclined surface 202 of the body (the pump body inclined surface and the upper plane of the body also form an included angle larger than 90 degrees). Two sides of the pump body are respectively provided with a plunger reciprocating cavity 201 corresponding to the two plunger channels 101 of the machine body, and two sides of the inclined plane of the pump body are respectively provided with an inwards concave annular groove 203 around the corresponding plunger reciprocating cavity, and the inwards concave annular grooves correspond to the two annular grooves 103 on the inclined plane of the machine body one by one. The annular groove 203 on the pump body inclined plane is concentric with and spaced from the corresponding plunger reciprocating cavity 201, and the bottom plane 204 of the annular groove is vertical to the central line of the plunger reciprocating cavity 201. Therefore, the annular groove 103 on the inclined plane of the body and the annular groove 203 on the inclined plane of the pump body are matched to form a cylindrical positioning hole, and the positioning ring 3 in clearance fit with the positioning hole is arranged in the hole.
The structure makes the mutual binding surface of the body and the pump body of the invention be an inclined surface, and the two binding inclined surfaces 102 and 202 are mutually positioned by the two positioning rings 3, so as to ensure that the central lines of the two plunger channels 101 at the left and right sides of the body and the central lines of the two plunger reciprocating cavities 201 of the pump body are respectively kept concentric. Therefore, the structure that the power end and the hydraulic end of the traditional reciprocating pump are connected with the binding surface in a 90-degree vertical connection mode is changed, the traditional sealing box body excircle positioning is changed into positioning ring positioning, the length of the overall power end can be reduced, a plurality of positioning references are reduced, the assembly precision is improved, and the service life of easily damaged parts is prolonged.
The packing assembly comprises a lubricating oil sealing assembly and a medium sealing assembly which are arranged in a plunger piston running cavity from outside to inside, and a step 205 is arranged in the plunger piston reciprocating running cavity and is used as a mounting reference and a separation wall between the two sealing assemblies so as to ensure that the sealing between the lubricating oil and the medium is not interfered.
The lubricating oil seal assembly sequentially comprises an oil seal adjusting screw cap 4, an oil seal filler 5 and an oil pressure ring guide sleeve 6, the medium seal assembly sequentially comprises a medium pressure ring 7, a medium seal filler 8 and a filler seal automatic compensation mechanism consisting of a spring seat 9 and a compensation spring 10, and the filler seal automatic compensation mechanism enables the medium seal filler to be automatically compensated back and forth under the action of spring force after being abraded. In order to further ensure the plunger and the filler to achieve the effects of sealing and prolonging the service life, besides the automatic filler sealing compensation mechanism consisting of the spring seat 9 and the compensation spring 10, the pump body is also provided with a manual filler sealing compensation mechanism, the manual filler sealing compensation mechanism comprises an adjusting flange 12 arranged on the pump body 2 and an adjusting screw 13 connected on the adjusting flange, the outer diameter circumference of the adjusting screw 13 is provided with a scale groove and is limited and fixed by a locking claw 14, one end of the locking claw 14 is connected with the adjusting screw 13, and the other end is connected with a positioning flange rod 15 fixed on the pump body. The front end of the medium sealing packing assembly is positioned by a step 205 in the cavity, and the rear end is positioned by a shunt sleeve 11 arranged in the reciprocating operation cavity of the plunger. The front end of the shunt sleeve 11 is provided with a step for propping against the spring seat 9, the tail part of the shunt sleeve 11 is provided with a sealing part, and the shunt sleeve can reciprocate in the plunger reciprocating cavity 201 under the action of the adjusting screw 13, so that the abrasion of medium sealing can be eliminated. In order to reduce the flow velocity of the medium in the inner hole of the shunt sleeve 11, a plurality of medium discharge grooves are arranged between the inner hole and the outer diameter of the shunt sleeve 11.
The assembly of the body, pump body and packing assembly of the present invention is generally described with reference to fig. 1: the machine body 1 and the pump body 2 are connected by pulling the pump body 2 through a left locating ring and a right locating ring 3 through connecting bolts, an upper pressure ring guide sleeve 6, lubricating oil sealing filler 5 and an oil sealing adjusting nut 4 are arranged in the direction of the locating ring 3, a medium pressure ring 7, medium sealing filler 8, a spring seat 9, an adjusting compensation spring 10, a plunger 19, a shunt sleeve 11, an adjusting flange 12, an adjusting screw 13, a locating flange rod 15 and a locking claw 14 are arranged in front of the pump body, and a combination valve 16, a compression sleeve 17 and a screw plug 18 are arranged at the top of the pump body. The plunger 19 is connected to the power end drive assembly so that it reciprocates axially under the action of the power end.
The working principle is as follows: when the plunger 19 runs backwards (towards the direction of the power end), the liquid inlet valve of the combination valve 16 is opened, and medium enters the plunger reciprocating cavity and the flow distribution sleeve 11; when the plunger 19 moves forwards, the liquid inlet valve of the combination valve 16 is closed, the pressure in the cavity rises, the liquid discharge valve in the combination valve 16 is opened, and the medium is discharged; when the plunger 19 runs, the medium sealing packing 8 automatically runs in the sealing surface of the medium sealing packing 8 according to the reciprocating motion of the plunger 19, and after the sealing surface is worn, the radial clearance is automatically compensated and eliminated by the adjusting compensation spring 10, so that a sealing line is formed between the plunger 19 and the inner cavity of the medium sealing packing 8 and the plunger 19, and the medium is prevented from leaking. When the compensation spring 10 loses the spring force, the screw 13 can be manually adjusted, so that the shunting sleeve 11 forwards improves the compression force of the compensation spring 10 to achieve the sealing effect of the medium sealing filler 8, and after the adjusting position is determined, the anti-loosening claw 14 is inserted into the indexing groove of the adjusting screw 13 to prevent the adjusting screw 13 from loosening and withdrawing. When the plunger 19 runs, the lubricating oil seal can be observed, when leakage exists, a special tool can be used for tightening the oil seal adjusting screw cap 4 until no leakage exists, and the purpose of no leakage of the plunger and the filler is achieved.
Example 2: referring to fig. 6 to 10, the main difference from embodiment 1 is the shape of the retainer 3 and the packing material 5, 8. As shown in fig. 7, the annular groove 103 on the body and the annular groove 203 on the pump body are shown in fig. 9, and the bottom planes 104 and 204 of the two annular grooves are respectively parallel to the body inclined plane 102 and the pump body inclined plane 202, so that the cross section of the positioning hole formed by the two annular grooves is parallelogram instead of the conventional rectangle of the embodiment 1. The corresponding cage 3 is also parallelogram-shaped in cross-section, as shown in fig. 6.
as shown in fig. 11, the oil seal packing 5 and the medium seal packing 8 are not in the conventional packing shape with a rectangular cross-sectional shape as shown in embodiment 1, but adopt a packing with a parallelogram cross-sectional shape, that is, both end faces of the oil seal packing 5 and the medium seal packing 8 are designed into an inclined plane shape parallel to the inclined plane 202 of the pump body, the surfaces of the corresponding oil seal adjusting nut 4 and the corresponding oil pressure ring guide sleeve 6, which are respectively in contact with the oil seal packing 5, are designed into an inclined plane shape with the same angle, and the surfaces of the same medium press ring 7 and the same spring seat 9, which are respectively in contact with the medium seal packing 8, are also designed into an inclined plane shape with the same angle.
The arrangement is more favorable for increasing the length of the sealing line, reducing the sealing quantity, improving the rigidity strength of the sealing and being favorable for uniform abrasion of the sealing.
The above description is only two preferred embodiments of the present invention, and different modifications or improvements can be made besides the above two embodiments, without being limited thereto.
Claims (9)
1. A reciprocating pump for optimizing connection between a power end and a hydraulic end comprises a machine body of the power end and a pump body of the hydraulic end, wherein a crankshaft and a transmission assembly driven by the crankshaft to do radial reciprocating motion are arranged in the machine body, and the transmission assembly comprises a connecting rod and a crosshead; be equipped with plunger reciprocating motion chamber in the pump body, the intracavity is equipped with filler assembly and plunger, the plunger is connected its characterized in that with the drive assembly of power end: the surface of the body, which is jointed with the pump body, is designed into an inclined surface, and the inclined surface and the center line of the body form an obtuse angle; the surface of the pump body, which is jointed with the body, is also designed into an inclined plane with the same angle, so that the inclined plane of the body is jointed and matched with the inclined plane of the pump body, and a positioning structure is arranged between the inclined plane of the body and the inclined plane of the pump body, so that the body and the pump body are positioned and fixed with each other, and the central line of the plunger and the central line of the crosshead are kept on the same line.
2. The reciprocating pump of claim 1, wherein: the positioning structure is characterized in that corresponding concave annular grooves are respectively arranged on the machine body inclined plane and the pump body inclined plane, the annular groove on the machine body inclined plane and the annular groove on the pump body inclined plane are combined to form a positioning hole for the positioning ring, and the positioning ring is arranged in the positioning hole to form the positioning structure.
3. The reciprocating pump of claim 2, wherein: the annular groove on the inclined plane of the machine body is in a step shape which is concentric with and communicated with the plunger channel in the machine body, the annular groove on the inclined plane of the pump body is concentric with and separated from the reciprocating operation cavity of the plunger, and the bottom plane of the annular groove on the inclined plane of the machine body and the bottom plane of the annular groove on the inclined plane of the pump body are vertical to the central line of the plunger channel or the central line of the reciprocating operation cavity of the plunger.
4. The reciprocating pump of claim 2, wherein: the annular groove on the inclined plane of the machine body is in a step shape which is concentric with and communicated with a plunger channel in the machine body, the annular groove on the inclined plane of the pump body is concentric with and separated from the reciprocating running cavity of the plunger, and the bottom plane of the annular groove on the inclined plane of the machine body and the bottom plane of the annular groove on the inclined plane of the pump body are both parallel to the inclined plane of the machine body or the inclined plane of the pump body.
5. The reciprocating pump of claim 3 or 4, wherein: the packing assembly arranged in the reciprocating operation cavity of the plunger piston comprises a lubricating oil sealing assembly and a medium sealing assembly which are arranged from outside to inside, and the lubricating oil sealing assembly and the medium sealing assembly are separated by a step arranged in the reciprocating operation cavity of the plunger piston.
6. The reciprocating pump of claim 5, wherein: the lubricating oil seal assembly sequentially comprises an oil seal adjusting screw cap, an oil seal filler and an oil pressure ring guide sleeve; the medium sealing assembly sequentially comprises a medium pressure ring, a medium sealing filler and a filler sealing automatic compensation mechanism consisting of a spring seat and a compensation spring.
7. The reciprocating pump of claim 6, wherein: the cross section shapes of the oil seal filler and the medium seal filler are both parallelogram, and the two end faces of the oil seal filler and the medium seal filler are both designed into an inclined plane shape parallel to the inclined plane of the pump body; correspondingly, the oil seal adjusting screw cap and the oil pressure ring guide sleeve are designed into the inclined plane shape with the same angle respectively at the surface contacted with the oil seal packing, and the medium pressing ring and the spring seat are designed into the inclined plane shape with the same angle respectively at the surface contacted with the medium seal packing.
8. The reciprocating pump of claim 5, wherein: the front end of the medium sealing assembly is positioned by the step, the rear end of the medium sealing assembly is positioned by a shunt sleeve arranged in the reciprocating operation cavity of the plunger, and a plurality of medium discharge grooves are formed between the inner hole and the outer diameter of the shunt sleeve.
9. The reciprocating pump of claim 6, wherein: the manual filler seal compensation mechanism comprises an adjusting flange arranged on the pump body and an adjusting screw connected to the adjusting flange, wherein the outer diameter circumference of the adjusting screw is provided with a scale groove and is limited and fixed by a locking claw; the front end of the medium sealing filler assembly is positioned by the step, the rear end of the medium sealing filler assembly is positioned by a shunt sleeve arranged in the reciprocating operation cavity of the plunger, a plurality of medium discharge grooves are formed between the inner hole and the outer diameter of the shunt sleeve, the tail part of the shunt sleeve is provided with a sealing part, and the shunt sleeve makes reciprocating movement in the reciprocating operation cavity of the plunger under the action of an adjusting screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710588373.9A CN107165797B (en) | 2017-07-19 | 2017-07-19 | Reciprocating pump with optimized connection of power end and hydraulic end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710588373.9A CN107165797B (en) | 2017-07-19 | 2017-07-19 | Reciprocating pump with optimized connection of power end and hydraulic end |
Publications (2)
| Publication Number | Publication Date |
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| CN107165797A CN107165797A (en) | 2017-09-15 |
| CN107165797B true CN107165797B (en) | 2019-12-06 |
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| CN201710588373.9A Active CN107165797B (en) | 2017-07-19 | 2017-07-19 | Reciprocating pump with optimized connection of power end and hydraulic end |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203394736U (en) * | 2013-08-13 | 2014-01-15 | 中国石油化工集团公司 | Fluid end device for plunger pump |
| CN105221407A (en) * | 2015-10-22 | 2016-01-06 | 宁波合力机泵有限公司 | A kind of hydraulic end of plunger pump assembly |
| CN106917743B (en) * | 2017-04-27 | 2019-03-26 | 宁波合力机泵股份有限公司 | A kind of hydraulic end of plunger pump assembly of conical surface location sealing letter body |
| CN206903817U (en) * | 2017-07-19 | 2018-01-19 | 宁波合力机泵股份有限公司 | A kind of reciprocating pump for optimizing power end and being connected with fluid end |
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