CN113007056B - Variable plunger pump transmission end stroke adjusting device - Google Patents
Variable plunger pump transmission end stroke adjusting device Download PDFInfo
- Publication number
- CN113007056B CN113007056B CN202110274284.3A CN202110274284A CN113007056B CN 113007056 B CN113007056 B CN 113007056B CN 202110274284 A CN202110274284 A CN 202110274284A CN 113007056 B CN113007056 B CN 113007056B
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- Prior art keywords
- plunger
- rod
- stroke
- adjusting
- stroke adjusting
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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
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
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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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
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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
- F04B53/14—Pistons, piston-rods or piston-rod connections
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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
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/144—Adaptation of piston-rods
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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
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/144—Adaptation of piston-rods
- F04B53/146—Piston-rod guiding arrangements
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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
- F04B53/22—Arrangements for enabling ready assembly or disassembly
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a stroke adjusting device for a transmission end of a variable plunger pump, which comprises a plunger, a first driving part and a second driving part, wherein the plunger is arranged in a power end machine body of the plunger pump; the plunger regulating rod is arranged between the plunger and the first driving part, one end of the plunger regulating rod is in idle running fit with the plunger, and the other end of the plunger regulating rod is in threaded fit with the first driving part; the second driving part drives the plunger regulating rod to rotate, and simultaneously the plunger regulating rod is in threaded fit with the first driving part and drives the plunger to generate axial displacement so as to realize stroke regulation of the plunger; according to the plunger pump, the plunger adjusting rod is driven to rotate forwards and backwards, the plunger is driven to generate axial displacement while the plunger adjusting rod is in threaded fit with the first driving part, so that 0-100% stroke adjustment of the plunger pump is realized, the stroke application range of the plunger pump is expanded, the plunger stroke can be adjusted without stopping for multiple times, the plunger stroke can be adjusted when the plunger pump is not stopped, and the operation efficiency of the pump is improved.
Description
Technical Field
The invention relates to the field of plunger pumps, in particular to a stroke adjusting device for a transmission end of a variable plunger pump.
Background
The plunger pump is an important device in the industries of petrochemical industry, pesticides, chemical fertilizers, industrial and mining and the like, and has the characteristics of compact structure, high efficiency, controllable and adjustable flow and the like. The plunger pump mainly depends on the reciprocating motion of the plunger in the cylinder body, so that the volume of the sealed working cavity is changed periodically, and the aim of conveying liquid is fulfilled.
The plunger stroke of the plunger pump is not easy to adjust, so that the operation efficiency of the plunger pump is greatly reduced, and the problem needs to be solved urgently.
Disclosure of Invention
In order to avoid and overcome the technical problems in the prior art, the invention provides a variable plunger pump transmission end stroke adjusting device. The invention expands the application range of the plunger pump and improves the operation efficiency of the pump at the same time.
In order to achieve the purpose, the invention provides the following technical scheme:
a stroke adjusting device for a transmission end of a variable plunger pump comprises a plunger, a first driving part and a second driving part, wherein the plunger is arranged in a power end machine body of the plunger pump; the plunger regulating rod is arranged between the plunger and the first driving part, one end of the plunger regulating rod is in idle running fit with the plunger, and the other end of the plunger regulating rod is in threaded fit with the first driving part; the second driving part drives the plunger regulating rod to rotate, and meanwhile, the plunger regulating rod is in threaded fit with the first driving part and drives the plunger to generate axial displacement so as to realize stroke regulation of the plunger.
As a further scheme of the invention: the second drive division is including extending to the outer regulation worm of power end machine body and cover establish the plunger regulation pole body on with regulation worm matched with adjust the worm wheel, be provided with the locking piece along the axial on the plunger regulation pole, the locking piece prevents to adjust worm wheel and plunger regulation pole and takes place relative pivoted while to produce the axial guide effect to the plunger regulation pole.
As a still further scheme of the invention: a pressure ring guide section is axially arranged on the rod body of the plunger regulating rod, and the locking piece comprises a locking pressure ring which is sleeved on the pressure ring guide section and is fixedly connected with the regulating worm wheel; the cross-sectional shape of the inner ring surface of the locking pressure ring is matched with that of the pressure ring guide section, and the pressure ring guide section is provided with a chamfered edge to realize rotation stopping matching with the adjusting worm wheel.
As a still further scheme of the invention: the adjusting worm wheel is provided with a positioning groove, the locking pressing ring is convexly provided with a positioning bulge corresponding to the positioning groove, and the positioning bulge is matched with the positioning groove in a locking mode.
As a still further scheme of the invention: the second driving part further comprises a stroke adjusting rod in threaded fit with the power end machine body, the adjusting worm is arranged at one end of a rod body of the stroke adjusting rod, and the rod body at the other end of the stroke adjusting rod extends out of the power end machine body.
As a still further scheme of the invention: the rod body of the stroke adjusting rod is provided with a locking threaded sleeve, one end of the locking threaded sleeve is in threaded fit with the power end machine body, the other end of the locking threaded sleeve is coaxially fixed with the graduated tube, and stroke adjusting scales are arranged on the wall of the graduated tube.
As a still further scheme of the invention: a first external thread is arranged on the rod body of the stroke adjusting rod, a stroke adjusting sliding sleeve in threaded fit with the first external thread is sleeved at the first external thread, and the scale sleeve is sleeved outside the stroke adjusting sliding sleeve; the end part of the rod body of the stroke adjusting rod outside the power end machine body is provided with a hand wheel positioning head, and the hand wheel positioning head is matched with the adjusting hand wheel in a locking mode.
As a still further scheme of the invention: the first driving part comprises a connecting rod mechanism arranged in the power end machine body and a crosshead which is matched with the connecting rod mechanism to convert the swinging motion of the connecting rod mechanism into reciprocating motion; and a second external thread is formed in one end, far away from the plunger, of the plunger adjusting rod, and a stroke adjusting block in threaded fit with the second external thread is arranged on the cross head.
As a still further scheme of the invention: the connecting rod mechanism comprises a connecting rod and a power shaft, wherein an eccentric wheel matched with the large head part of the connecting rod is arranged on the power shaft, and the small head part of the connecting rod is fixed on the cross head through a fixing pin; and a cushion block is fixed between the stroke adjusting block and the crosshead.
As a still further scheme of the invention: the plunger and the plunger adjusting rod are connected through a connecting nut and a locking nut to realize idle running matching.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the plunger regulating rod is arranged between the plunger and the first driving part which generates the axial reciprocating driving force, one end of the plunger regulating rod is in idle running fit with the plunger, the other end of the plunger regulating rod is in threaded fit with the first driving part, and the plunger is driven to generate axial displacement while the plunger regulating rod is in threaded fit with the first driving part by driving the plunger regulating rod to rotate positively and negatively, so that 0-100% stroke regulation of the plunger pump is realized, the stroke application range of the plunger pump is expanded, the plunger stroke can be regulated without stopping for multiple times, the plunger stroke can be regulated when the plunger pump is not stopped, and the operating efficiency of the pump is improved.
2. According to the plunger adjusting rod, the worm and gear assembly is selected as the driving part for driving the plunger adjusting rod to rotate, the locking piece is added, the adjusting worm gear and the plunger adjusting rod can be prevented from rotating relatively, meanwhile, the plunger adjusting rod is axially guided, the overall structure is simple, the transmission is stable and reliable, and the transmission efficiency is high.
3. According to the plunger regulating rod, the pressing ring guide section with the chamfered edge is arranged on the plunger regulating rod, the locking pressing ring matched with the contact surface of the plunger regulating rod in cross section shape is sleeved on the pressing ring guide section, and after the locking pressing ring and the regulating worm wheel are fixed, the plunger regulating rod can be axially guided while the pressing ring guide section and the regulating worm wheel are in rotation stopping fit; the arrangement of the positioning groove and the positioning bulge facilitates the locking and positioning of the locking press ring and the adjusting worm wheel.
4. According to the plunger pump, the adjusting worm is arranged at one end of the stroke adjusting rod, the other end of the stroke adjusting rod extends out of the power end machine body, when the plunger pump works, the stroke adjusting rod is rotated at one end outside the pump body of the plunger pump, so that the adjusting worm can be driven to rotate, the stroke adjustment of the plunger is realized, and the stroke of the plunger can be manually adjusted when the plunger pump does not stop the machine work; the stroke adjusting rod is provided with the graduated tube in threaded fit with the graduated tube, and the position difference between the stroke adjusting scale and the stroke adjusting scale on the graduated tube is observed during stroke adjustment, so that the stroke adjusting amount of the plunger can be indirectly reflected, the visual operation of stroke adjustment is realized, and the stroke adjustment of the plunger pump is facilitated; the arrangement of the adjusting hand wheel facilitates the manual rotation of the stroke adjusting rod.
5. According to the invention, a connecting rod mechanism matched with the crosshead is used as a driving part for generating axial driving force, and the crosshead is provided with a stroke adjusting block which is in threaded fit with a stroke of a plunger adjusting rod, so that stroke adjustment of the plunger can be realized; the setting of cushion has avoided cross head and plunger to adjust the pole and has taken place contact wear, has improved the life that cross head and plunger were adjusted the pole.
6. The plunger and the plunger adjusting rod are connected by the connecting nut and the locking nut, so that the plunger and the plunger adjusting rod are in idle running fit, the installation is simple, and the stability in working is high.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the stroke adjusting rod of the present invention.
Fig. 3 is a schematic structural view of a plunger regulating rod according to the present invention.
Fig. 4A is a schematic structural view of an adjusting worm wheel according to the present invention.
Fig. 4B is a side view of the adjustment worm gear of the present invention.
Fig. 5A is a schematic structural view of the locking collar of the present invention.
Figure 5B is a top view of the locking collar of the present invention.
Figure 6 is a schematic cross-sectional view of a pressure ring guide segment according to the present invention.
Fig. 7 is a top view of the internal structure of the present invention.
In the figure: 10. a stroke adjusting rod; 101. a hand wheel positioning head; 102. a first external thread; 103. adjusting the worm; 11. adjusting a hand wheel; 12. a stroke adjusting sliding sleeve; 13. a graduated tube; 14. locking the threaded sleeve; 20. a plunger regulating rod; 201. a second external thread; 202. a pressure ring guide section; 21. a connecting nut; 22. locking the nut; 23. a plunger; 24. adjusting the worm gear; 241. a positioning groove; 25. locking the compression ring; 251. positioning the projection; 26. a stroke adjusting block; 30. a crosshead; 301. a crosshead shoe; 302. cushion blocks; 303. a connecting rod; 304. a fixing pin; 40. a power end machine body; 401. a rear cover plate; 50. a power shaft; 501. an eccentric wheel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 to 7, in an embodiment of the present invention, a stroke adjustment device for a transmission end of a variable plunger pump includes a power end machine body 40 of the plunger pump, one end of a plunger 23 in the plunger pump enters the power end machine body 40, and is coaxially idle-matched with a plunger adjustment rod 20 through a connection nut 21 and a locking nut 22, and the connection nut 21 and the locking nut 22 may be replaced by other idle-connected components, so that the plunger adjustment rod 20 is not driven to rotate while the plunger adjustment rod 20 rotates, and the plunger adjustment rod 20 can drive the plunger 23 to axially reciprocate.
One end of the plunger regulating rod 20 far away from the plunger 23 is connected with a power part which generates axial driving force, and the power part drives the plunger regulating rod 20 and the plunger to reciprocate along the axial direction.
The power source of the power part is not limited, and only axial reciprocating driving force needs to be generated, preferably, the crosshead 30 is matched with a connecting rod mechanism, the connecting rod mechanism comprises a connecting rod 303 and a power shaft 50, an eccentric wheel 501 is arranged on the power shaft 50, the eccentric wheel 501 is matched with the large head part of the connecting rod 303, and the small head part of the connecting rod 303 is fixed on the crosshead 30 through a fixing pin 304; multiple eccentric wheels 501 may be provided on the power shaft 50 to drive multiple power sections and plungers to reciprocate simultaneously.
In order to realize the stroke adjustment of the plunger 23, a driving part is arranged on the plunger adjusting rod 20 to drive the plunger adjusting rod 20 to rotate, a second external thread 201 is arranged at the end part of the plunger adjusting rod 20 far away from the plunger 23, a stroke adjusting block 26 in threaded fit with the second external thread 201 is arranged on the crosshead 30, and when the plunger adjusting rod 20 rotates clockwise or anticlockwise, the plunger adjusting rod 20 is in threaded fit with the stroke adjusting block 26 to generate axial movement, so that the plunger 23 is driven to realize 0-100% stroke adjustment.
The driving part is preferably a worm and gear structure, and comprises an adjusting worm gear 24 sleeved on the plunger adjusting rod 20 and an adjusting worm 103 matched with the adjusting worm gear 24, the plunger adjusting rod 20 is further sleeved with a locking press ring 25 fixedly connected with the adjusting worm gear 24, one section of the rod body of the plunger adjusting rod 20 is a press ring guide section 202, and the locking press ring 25 is sleeved on the press ring guide section 202.
The section shape of the inner ring surface of the locking pressure ring 25 is matched with that of the pressure ring guide segment 202, the pressure ring guide segment 202 is axially cut to form at least one cut edge, and the cut edge is arranged to realize the rotation stopping matching of the locking pressure ring 25 and the pressure ring guide segment 202; the press ring guide section 202 is preferably provided with four chamfered edges uniformly, an arc section at one end is left between each chamfered edge for the adjustment worm wheel 24 to rotate, the chamfered edge is locked with the locking press ring 25 to prevent the adjustment worm wheel 24 and the plunger adjustment rod 20 from rotating relatively, and the press ring guide section 202 also plays a role in axially guiding the plunger adjustment rod 20.
The inner annular surface of the locking collar 25 may be flared outward in the circumferential direction to form four arc segments as shown in fig. 5A to prevent stress concentration.
The fixing manner of the adjusting worm wheel 24 and the locking press ring 25 is not limited, but it is preferable that a positioning groove 241 is axially formed on the adjusting worm wheel 24, a positioning protrusion 251 corresponding to the positioning groove 241 is convexly formed on the locking press ring 25, and the positioning protrusion 251 and the positioning groove 241 are in locking fit.
The press ring guide section 202 and the locking press ring 25 can be replaced by other components, and only the axial guide function on the plunger regulating rod 20 is needed while the relative rotation between the regulating worm wheel 24 and the plunger regulating rod 20 is prevented; for example, an axial 'key' can be added to prevent the adjusting worm gear 24 and the plunger adjusting rod 20 from rotating relatively, and can play a role in axial guiding.
In order to facilitate manual adjustment, one end of the adjusting worm 103 can extend out of the power end machine body 40, preferably, a stroke adjusting rod 10 in threaded fit with the power end machine body 40 is arranged, a locking threaded sleeve 14 is arranged on the rod body of the stroke adjusting rod 10, and the locking threaded sleeve 14 is in threaded fit with the power end machine body 40 to complete the fixation of the stroke adjusting rod 10; the adjusting worm 103 is disposed at one end of the stroke adjusting rod 10, and the other end of the stroke adjusting rod 10 is extended out of the power end machine body 40.
One end of the locking screw sleeve 14 is in threaded fit with the power end machine body 40, the other end of the locking screw sleeve is coaxially fixed with the graduated tube 13, and stroke adjusting scales are arranged on the tube wall of the graduated tube 13. The first external thread 102 is opened on the rod body of the stroke adjusting rod 10, and the stroke adjusting sliding sleeve 12 in threaded fit with the first external thread 102 is sleeved on the rod body. The scale tube 13 is sleeved outside the stroke adjusting sliding sleeve 12, the stroke adjusting sliding sleeve 12 can slide relative to the scale tube 13, and the displacement distance of the stroke adjusting sliding sleeve 12 is observed through the stroke adjusting scales on the scale tube 13, so that the stroke adjusting amount of the plunger 23 can be obtained.
The end part of the rod body of the stroke adjusting rod 10, which is positioned outside the power end machine body 40, is provided with a hand wheel positioning head 101, and the hand wheel positioning head 101 is in tenon-and-mortise fit with an adjusting hand wheel 11, so that the stroke adjusting rod can be driven to rotate through the adjusting hand wheel 11.
In order to prevent the rod end of the plunger adjusting rod 20 from directly contacting the crosshead 30 after passing through the stroke adjusting block 26, a cushion block 302 is usually fixed between the crosshead 30 and the stroke adjusting block 26 to prevent the crosshead 30 and the plunger adjusting rod 20 from contact wear; the crosshead tail plate 301 may be mounted on the crosshead 30, and a guide hole may be formed in the crosshead tail plate 301 to guide the plunger adjusting rod 20.
A detachable rear cover plate 401 is provided on the driving end body 40 to facilitate the installation of the driving parts.
The distance between the stroke adjusting block 26 and the cushion block 302 is the stroke adjusting distance d of the plunger, and the eccentricity of the eccentric wheel is e. In order to ensure that the plunger can smoothly complete 0-100% stroke adjustment, d is required to be larger than or equal to e, and the stroke adjusting block 26 and the cushion block 302 cannot collide during operation.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A stroke adjusting device for a transmission end of a variable plunger pump is characterized by comprising a plunger (23) arranged in a power end machine body (40) of the plunger pump, a first driving part for driving a plunger adjusting rod (20) to do reciprocating motion along the axial direction and a second driving part for driving the plunger adjusting rod (20) to rotate; the plunger regulating rod (20) is arranged between the plunger (23) and the first driving part, one end of the plunger regulating rod is in idle running fit with the plunger (23), and the other end of the plunger regulating rod is in threaded fit with the first driving part; the second driving part drives the plunger regulating rod (20) to rotate, and meanwhile, the plunger regulating rod (20) is in threaded fit with the first driving part and drives the plunger (23) to generate axial displacement so as to realize stroke regulation of the plunger (23);
the second driving part comprises an adjusting worm (103) extending to the outside of the power end machine body (40) and an adjusting worm wheel (24) sleeved on the body of the plunger adjusting rod (20) and matched with the adjusting worm (103), a locking piece is arranged on the plunger adjusting rod (20) along the axial direction, and the locking piece prevents the adjusting worm wheel (24) and the plunger adjusting rod (20) from rotating relatively and simultaneously generates an axial guiding effect on the plunger adjusting rod (20);
a pressure ring guide section (202) is axially arranged on the rod body of the plunger regulating rod (20), and the locking piece comprises a locking pressure ring (25) which is sleeved on the pressure ring guide section (202) and is fixedly connected with the regulating worm wheel (24); the cross-sectional shape of the inner ring surface of the locking pressure ring (25) is matched with the cross-sectional shape of the pressure ring guide section (202), and a chamfered edge is arranged on the pressure ring guide section (202) to realize rotation stopping matching with the adjusting worm wheel (24).
2. The variable displacement plunger pump transmission end stroke adjusting device is characterized in that a positioning groove (241) is formed in the adjusting worm wheel (24), a positioning protrusion (251) corresponding to the positioning groove (241) in position is arranged on the locking pressing ring (25) in a protruding mode, and the positioning protrusion (251) is in locking fit with the positioning groove (241).
3. The variable displacement plunger pump transmission end stroke adjusting device is characterized in that the second driving part further comprises a stroke adjusting rod (10) in threaded fit with the power end machine body (40), the adjusting worm (103) is arranged at one end of a rod body of the stroke adjusting rod (10), and the rod body at the other end of the stroke adjusting rod (10) extends out of the power end machine body (40).
4. The variable displacement plunger pump transmission end stroke adjusting device according to claim 3, characterized in that a locking screw sleeve (14) is arranged on the rod body of the stroke adjusting rod (10), one end of the locking screw sleeve (14) is in threaded fit with the power end machine body (40), the other end of the locking screw sleeve (14) is coaxially fixed with the graduated tube (13), and stroke adjusting scales are arranged on the tube wall of the graduated tube (13).
5. The stroke adjusting device for the transmission end of the variable plunger pump according to claim 4, wherein a first external thread (102) is formed on a rod body of the stroke adjusting rod (10), a stroke adjusting sliding sleeve (12) in threaded fit with the first external thread (102) is sleeved on the first external thread, and the graduated tube (13) is sleeved outside the stroke adjusting sliding sleeve (12); the end part, located outside the power end machine body (40), of the rod body of the stroke adjusting rod (10) is provided with a hand wheel positioning head (101), and the hand wheel positioning head (101) is in locking fit with an adjusting hand wheel (11).
6. The variable displacement plunger pump transmission end stroke adjusting device according to claim 1 or 2, wherein the first driving part comprises a link mechanism disposed in the power end body (40) and a crosshead (30) that cooperates with the link mechanism to convert a rocking motion of the link mechanism into a reciprocating motion; second external screw thread (201) have been seted up to plunger regulation pole (20) one end of keeping away from plunger (23), be provided with on cross head (30) with second external screw thread (201) screw-thread fit's stroke control piece (26).
7. The variable displacement plunger pump transmission end stroke adjusting device is characterized in that the connecting rod mechanism comprises a connecting rod (303) and a power shaft (50), an eccentric wheel (501) matched with a large end part of the connecting rod (303) is arranged on the power shaft (50), and a small end part of the connecting rod (303) is fixed on a crosshead (30) through a fixing pin (304); and a cushion block (302) is fixed between the stroke adjusting block (26) and the crosshead (30).
8. The variable displacement plunger pump transmission end stroke adjusting device according to claim 1 or 2, characterized in that the plunger (23) and the plunger adjusting rod (20) are connected through a connecting nut (21) and a locking nut (22) to realize idle running fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110274284.3A CN113007056B (en) | 2021-03-15 | 2021-03-15 | Variable plunger pump transmission end stroke adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110274284.3A CN113007056B (en) | 2021-03-15 | 2021-03-15 | Variable plunger pump transmission end stroke adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113007056A CN113007056A (en) | 2021-06-22 |
| CN113007056B true CN113007056B (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110274284.3A Active CN113007056B (en) | 2021-03-15 | 2021-03-15 | Variable plunger pump transmission end stroke adjusting device |
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| CN (1) | CN113007056B (en) |
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| GB562820A (en) * | 1943-03-02 | 1944-07-18 | Joseph Coblentz Groff | Improvements in or relating to plunger pumps |
| DE2304260A1 (en) * | 1972-01-31 | 1973-08-09 | Iwaki Co Ltd | ADJUSTABLE DOSING PUMP |
| CN202468192U (en) * | 2012-01-09 | 2012-10-03 | 马鞍山基业环保科技有限公司 | Two-head dual-adjustment low-pulsation diaphragm metering pump |
| CN204553191U (en) * | 2015-04-17 | 2015-08-12 | 中海国际海洋工程装备发展（天津）有限公司 | Mud pump for petroleum drilling bent axle |
| CN205779537U (en) * | 2016-06-23 | 2016-12-07 | 无锡市东亚泵业有限公司 | A kind of plunger type water injection pump |
| CN109296515A (en) * | 2018-09-03 | 2019-02-01 | 陕西科技大学 | A kind of double feed type delivery pumps |
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