CN207701346U - A kind of spherical stopper head connection structure - Google Patents
A kind of spherical stopper head connection structure Download PDFInfo
- Publication number
- CN207701346U CN207701346U CN201721489866.9U CN201721489866U CN207701346U CN 207701346 U CN207701346 U CN 207701346U CN 201721489866 U CN201721489866 U CN 201721489866U CN 207701346 U CN207701346 U CN 207701346U
- Authority
- CN
- China
- Prior art keywords
- pull rod
- plunger
- counterbore
- spherical
- face
- 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.)
- Active
Links
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The utility model belongs to plunger pump technique field, and in particular to a kind of spherical stopper head connection structure.The present apparatus includes at least plunger and pull rod coaxially to each other, and the endface axial direction indent towards plunger of the pull rod is provided with counterbore, and pull rod front end extends axially into the counterbore and constitutes screw-thread fit between the two；Pull rod front end face is spherical convex surface, and the hole bottom of counterbore is provided with the spherical concave surface coincideing with pull rod front end facial contour, and pull rod front end face and the sphere centre point of spherical concave surface are respectively positioned on plunger motion center line, and face paste is closed each other between pull rod front end face and spherical concave surface.The utility model can ensure the concentricity of plunger motion center line and pull rod axis always in plunger pump work, finally ensure normal effective operation of plunger pump.
Description
Technical field
The utility model belongs to plunger pump technique field, and in particular to a kind of spherical stopper head connection structure.
Background technology
Plunger pump is an important device of hydraulic system, it is moved back and forth by plunger in cylinder body, makes seal operation
The volume of vessel changes to realize oil suction, pressure oil action.Plunger pump have rated pressure it is high, it is compact-sized, efficient and
The advantages that flow-rate adjustment facilitates is widely used in the fields such as petrochemical industry, coal chemical industry and oil field.Plunger is then that plunger pump is able to
The secured connection of reciprocating core part, plunger is extremely important.Existing plunger connection structure, it is all coaxial with pull rod
It is fixed on the top end of plunger, drives plunger to make linear reciprocation action by the force of pull rod.The abutting end of plunger and pull rod
When cooperation, then fixed each other with external fixing piece, to reach the secured connection purpose of entire plunger axis.Above-mentioned existing structure
The problem of be：The influence of lateral force etc. suffered by when because of processing, rigging error and work is begun during plunger pump work
It is unpractical to keep the concentricity between plunger and pull rod eventually.And whenever the centre of motion line of plunger and pull rod axis difference axis
When, or plunger and the isostructural violent friction of stuffing-box occurs, to which the actual life of plunger be severely influenced, and or because of column
Plug mutually pushes up with pull rod and the situations such as plunger action is stuck occurs each other, finally seriously affects the normal work process of plunger pump.
Invention content
The purpose of this utility model is in view of the deficiencies of the prior art, to provide a kind of simple for structure and have self-centering work(
The spherical stopper head connection structure structure of energy, so as in plunger pump work, ensure plunger motion center line always and draw
The concentricity of rod axis finally ensures normal effective operation of plunger pump.
To achieve the above object, the utility model uses following technical scheme：
A kind of spherical stopper head connection structure, it is characterised in that：The present apparatus includes at least plunger and drawing coaxially to each other
Bar, the endface axial direction indent towards plunger of the pull rod are provided with counterbore, pull rod front end extend axially into the counterbore and
Screw-thread fit is constituted between the two；Pull rod front end face is spherical convex surface, and the hole bottom of counterbore is provided with kisses with pull rod front end facial contour
The spherical concave surface closed, pull rod front end face and the sphere centre point of spherical concave surface are respectively positioned on plunger motion center line, and before pull rod
Face paste is closed each other between end face and spherical concave surface.
The plunger front end is necking down axis, which includes positioned at the first shaft part of outermost end, as stage casing necking down
Second shaft part of section and the third shaft part for connecting the second shaft part and plunger back-end portion；The present apparatus further includes bisecting snap ring, divides half
Snap ring, to form Hough section type structure, forms tube-in-tube structure, and the ladder of the tube-in-tube structure for two groups after bisecting snap ring pairing
Shape vestibule constitutes clip and the mating cavity for being bonded the first shaft part outer wall and the second shaft part outer wall；The pull rod includes retreat stop block, only
It moves back block and is fixed on counterbore hole bottom, and the one side indent towards pull rod of retreat stop block is to form above-mentioned spherical concave surface；Retreat stop block
Diameter be equal to counterbore aperture and be more than the first shaft section diameter, retreat stop block around spherical concave surface plate face face paste close abutting in
At the adjacent cartridges end of bisecting snap ring.
Locking nut is nested and fixed on third shaft part, the one end of locking nut is pushed against in the corresponding end-faces of bisecting snap ring
Place；External screw thread is set at the outer tube wall of locking nut, internal thread is set at counterbore hole wall so that locking nut screw-thread fit in
At counterbore.
It is coaxially provided through on the retreat stop block and just tears hole open, the hole of just tearing open is threaded hole.
The present apparatus further includes anti-splashing disk, and the anti-splashing disk shape is in annulus sheet, and anti-splashing disk coaxial sleeve is set to locking nut
Constitute at outer tube wall and therewith screw-thread fit.
The beneficial effects of the utility model are：
1) fit structure of traditional use directly affixed plunger and pull rod, has been abandoned, then has been additionally arranged spherical surface fitting
Layout type, by by the counterbore hole spherical concave surface of sole arrangement of tie rod end, to the top with the spherical convex of plunger
Face paste is constituted between end face to close.In this way, once pull rod drives plunger to make reciprocating linear action, bulb cooperation can be played looks for automatically
Positive effect to ensure that the centre of motion line of plunger is in pull rod axis under coaxial state always, and then effectively reduces column
The service wear of plug, and the actual life of liftout plunger.
2), on the basis of above structure, the spherical concave surface for coordinating plunger front end face of counterbore is actually to arrange
On retreat stop block.As the discrete item being fixed in counterbore, one side can be used as the filling member of counterbore and uses retreat stop block,
To form above-mentioned spherical concave surface at outer lateral plates；On the other hand, spherical concave surface is arranged on the retreat stop block as discrete item,
The later stage is fitted into the production method of counterbore again, can effectively reduce the difficulty of processing of spherical concave surface, and then can reduce its actual processing
Cost.For retreat stop block while face is matched with plunger front end face, also face is resisted against the correspondence cylinder endface of bisecting snap ring, in this way,
Retreat stop block cooperation hoop is set to the bisecting snap ring at plunger axle journal, it can be achieved that bidirectionally limited function in axial direction, and then ensures plunger
The accuracy of action.
3) setting in hole, is just torn open so that when dismantling inlay card in retreat stop block in counterbore, external dismounting spiral shell can be passed through
Bolt, which is screwed into, just to be torn open in hole, then can be related to demounting bolt force extraction retreat stop block, final realize be caught in counterbore to deep
The convenient dismounting demand of interior retreat stop block.And for the screw-thread fit of plunger and pull rod, it can realize in several ways：Or it is straight
It is connected on plunger and arranges external screw thread to coordinate counterbore at pull rod；Or it can be as described in the utility model, by plunger or spiral shell
Line or the affixed locking nut of solid welding, then column is realized by the screw-thread fit of internal thread at external screw thread at locking nut and counterbore
It fills in and connect purpose with the secured of pull rod.The function of anti-splashing disk is then to prevent medium spillage and corrode the parts such as pull rod, in turn
The whole service life of further liftout plunger pump.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the sectional view of retreat stop block；
Fig. 3 is the positive structure schematic of bisecting snap ring.
The label for illustrating each structure is corresponding with this system the names of the parts as follows：
A- stuffing-boxes
10- plungers 10a- the first shaft part 10b- the second shaft part 10c- third shaft parts
11- locking nuts
The spherical concave surface 21- counterbores 22- retreat stop blocks 22a- of 20- pull rods 20a- just tear hole open
30- bisecting snap ring 40- anti-splashing disks
Specific implementation mode
For ease of understanding, the specific implementation structure and workflow of the utility model are made here in connection with diagram following into one
Step illustrates：
The specific configuration of the utility model is referring to shown in Fig. 1-2, including plunger 10, anti-splashing disk 40, locking nut 11, point half
Snap ring 30, retreat stop block 22 and pull rod 20.Between pull rod 20 and plunger 10 coaxially to each other, and one end axis towards plunger 10 of pull rod 20
To counterbore 21 recessed and that formation is probeed into for 10 front end of plunger, shown in Fig. 1.
Sealing is constituted when practical set, at the outer wall and stuffing-box a of the rear end of plunger 10 between filler to coordinate, and plunger 10
Front end then form necking down axis.Above-mentioned necking down axis is divided into according to sequence divides from right to left from front to back namely in Fig. 1
First shaft part 10a.Second shaft part 10b and third shaft part 10c.Wherein：The front end face of first shaft part 10a constitutes the front end of plunger 10
Face, the front end face are spherical convex surface.At counterbore 21 hole bottom can the affixed retreat stop block 22 of screw thread, retreat stop block 22 towards plunger 10
The spherical concave surface 20a for coordinating 10 front end face of plunger for face is recessed at the plate face of center, it is specific as shown in Figure 2.In addition, plunger
Also hoop is equipped with bisecting snap ring 30 as shown in Figures 1 and 3 outside 10 the first shaft part 10a and the second shaft part 10b.Bisecting snap ring 30
One end is resisted against on retreat stop block 22, and the other end is then resisted against at 11 respective end of locking nut.Locking nut 11 is anchored on third axis
On section 10c, and external screw thread is arranged at the outer tube wall of fastening nut 11, to constitute screw-thread fit between counterbore 21.So far, it locks
External screw thread is connect with internal thread at counterbore 21 at nut 11, and pushes against bisecting snap ring 30 by the end of locking nut 11, from
And play the role of fastening plunger 10.And bisecting snap ring 30 is mounted at 10 neck of plunger, then plays the work for blocking plunger 10
With so as to the two-way positioning fastening function for coordinating retreat stop block 22 to realize with respect to plunger 10.As shown in Figs. 1-2, when plunger 10
When top end convex spherical is fitted close with concave spherical surface at retreat stop block 221, no matter pull rod 20 drives which kind of action plunger 10 makees,
Play the role of automatic capturing, to ensure that the centre of motion line of plunger 10 is in 20 axis of pull rod on same straight line always.
On the basis of above structure, as shown in Figure 1, also screw-thread fit has anti-splashing disk at the external screw thread of fastening nut 11
40, to realize medium Anti-splash demand.In plunger pump work, anti-splashing disk 40 can effectively avoid medium and splash out and corrode pull rod 20
Equal parts, and then the further whole service life of liftout plunger pump.
Claims (5)
1. a kind of spherical stopper head connection structure, it is characterised in that：The present apparatus include at least plunger (10) coaxially to each other and
Pull rod (20), the endface axial direction indent towards plunger (10) of the pull rod (20) are provided with counterbore (21), before pull rod (20)
End extends axially into the counterbore (21) and constitutes screw-thread fit between the two；Pull rod (20) front end face is spherical convex surface, counterbore
(21) hole bottom is provided with the spherical concave surface (20a) coincideing with pull rod (20) front end facial contour, pull rod (20) front end face and ball
The sphere centre point of shape concave surface (20a) is respectively positioned on the line of plunger (10) centre of motion, and pull rod (20) front end face and spherical concave surface
Face paste is closed each other between (20a).
2. a kind of spherical stopper head connection structure according to claim 1, it is characterised in that：Plunger (10) front end
Portion is necking down axis, which includes the first shaft part (10a), the second shaft part as stage casing necking segment positioned at outermost end
The third shaft part (10c) of (10b) and the second shaft part of connection (10b) and plunger (10) rear end；The present apparatus further includes point half card
Ring (30), bisecting snap ring (30) are two groups to form Hough section type structure, and tube-in-tube structure is formed after bisecting snap ring (30) pairing,
And the ladder-like vestibule of the tube-in-tube structure constitutes clip and fitting the first shaft part (10a) outer wall and the second shaft part (10b) outer wall
Mating cavity；The pull rod (20) includes retreat stop block (22), and retreat stop block (22) is fixed on counterbore (21) hole bottom, and retreat stop block (22)
The one side indent towards pull rod (20) to form above-mentioned spherical concave surface (20a)；The diameter of retreat stop block (22) is equal to counterbore
(21) aperture and be more than the first shaft part (10a) diameter, retreat stop block (22) around spherical concave surface (20a) plate face face paste close support
Tightly at the adjacent cartridges end of bisecting snap ring (30).
3. a kind of spherical stopper head connection structure according to claim 2, it is characterised in that：On third shaft part (10c)
Locking nut (11) is nested and fixed, the one end of locking nut (11) pushes against at the corresponding end-faces of bisecting snap ring (30)；Lock
External screw thread is set at the outer tube wall of tight nut (11), internal thread is set at counterbore (21) hole wall, so that locking nut (11) spiral shell
Line is matched at counterbore (21).
4. a kind of spherical stopper head connection structure according to claim 2 or 3, it is characterised in that：The retreat stop block
(22) it is coaxially provided through on and just tears hole (22a) open, the hole (22a) of just tearing open is threaded hole.
5. a kind of spherical stopper head connection structure according to claim 3, it is characterised in that：The present apparatus further includes splashproof
Disk (40), anti-splashing disk (40) shape be in annulus sheet, anti-splashing disk (40) coaxial sleeve be set to locking nut (11) outer tube wall at and with
Composition screw-thread fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721489866.9U CN207701346U (en) | 2017-11-09 | 2017-11-09 | A kind of spherical stopper head connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721489866.9U CN207701346U (en) | 2017-11-09 | 2017-11-09 | A kind of spherical stopper head connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207701346U true CN207701346U (en) | 2018-08-07 |
Family
ID=63022288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721489866.9U Active CN207701346U (en) | 2017-11-09 | 2017-11-09 | A kind of spherical stopper head connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207701346U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162883A (en) * | 2018-09-11 | 2019-01-08 | 上海水威环境技术股份有限公司 | A kind of three plunger water pump of super-pressure |
| CN111502978A (en) * | 2020-04-15 | 2020-08-07 | 陕西航天动力高科技股份有限公司 | Connecting device for plunger and power end of diaphragm pump |
-
2017
- 2017-11-09 CN CN201721489866.9U patent/CN207701346U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162883A (en) * | 2018-09-11 | 2019-01-08 | 上海水威环境技术股份有限公司 | A kind of three plunger water pump of super-pressure |
| CN111502978A (en) * | 2020-04-15 | 2020-08-07 | 陕西航天动力高科技股份有限公司 | Connecting device for plunger and power end of diaphragm pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207701346U (en) | A kind of spherical stopper head connection structure | |
| CN102179439B (en) | Thick-wall pipe hydroforming device | |
| CN203108967U (en) | Elastic fixing and extruding pad for aluminum extruder | |
| CN107202046A (en) | A kind of plunger combination oil cylinder with guide sleeve axle | |
| CN205503582U (en) | Ultrahigh -pressure supercharger | |
| CN100575759C (en) | The metal pipe connection structure on a kind of separate unit rank | |
| CN201648617U (en) | Spindle bolster connector | |
| CN207960565U (en) | A kind of series connection blowout prevention box of cone seal | |
| CN203426230U (en) | Pipe outside high pressure forming device | |
| CN204314156U (en) | Pipe fitting low-pressure water compression testing device | |
| CN201599274U (en) | Hydraulic jacking cylinder | |
| CN102269303A (en) | Automobile braking oil tube | |
| CN100520144C (en) | Metal pipe connection structure with multiple steps | |
| CN106640782B (en) | It is a kind of from pressurized fuel tank device | |
| CN204721146U (en) | Motor fast disassembly type syndeton | |
| CN205043471U (en) | Lathe guide rail locking mechanism's control section | |
| CN210397073U (en) | Cooperation structure of slush pump disk seat and hydraulic cylinder | |
| CN206199622U (en) | A kind of hydraulic pressure colloid-injecting gun suitable for generating set | |
| CN210371441U (en) | Internal thread oil cylinder | |
| CN200975511Y (en) | Bidirectional two-pass wedged and fastened type heavy caliber top mounted ball-valve | |
| CN107630861B (en) | Flexibly adjustable safety self-locking oil cylinder | |
| CN203751213U (en) | Hydraulic device | |
| CN206562986U (en) | A kind of high pressure resistant oil-immersed pump | |
| CN207004975U (en) | A kind of plunger combination oil cylinder with guide sleeve axle | |
| CN202215619U (en) | Shaft sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |