CN214118448U

CN214118448U - Electric stroke adjusting structure of metering pump

Info

Publication number: CN214118448U
Application number: CN202023228059.6U
Authority: CN
Inventors: 石磊; 郑卓颖; 姜照
Original assignee: Lewa Pumps Dalian Co Ltd
Current assignee: Lewa Pumps Dalian Co Ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-09-03
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses an electric stroke adjusting structure of a metering pump, which comprises a motor, a flange plate, a connecting chamber, a central shaft, a first positioning bearing, a shaft sleeve, a fixed bearing, a connecting sleeve, an adjusting lead screw, a transmission box body, a rotating shaft, a hand wheel, a guide rod, a sealing chamber, a top cover, a positioning groove, a second positioning bearing, a clamping groove, a cavity, a fixed plate, a first flange hole, a second flange hole and a limiting ring, wherein the top end of the connecting chamber is fixedly connected with the bottom end of the flange plate through a bolt, the electric stroke adjusting mechanism and a transmission unit of the metering pump adopt an inner square connection and outer bearing structure, the adjusting lead screw is directly spliced with the central shaft, the installation and the disassembly are very convenient, the disassembly efficiency is greatly improved, and simultaneously, the centering performance of the central shaft and the adjusting lead screw is favorably ensured through the installation of the first positioning bearing, the shaft sleeve, the fixed bearing and the connecting sleeve, the phenomena of abrasion and clamping of the adjusting screw rod are avoided, and the running stability is improved.

Description

Electric stroke adjusting structure of metering pump

Technical Field

The utility model relates to a measuring pump technical field specifically is a structure is adjusted to measuring pump electric stroke.

Background

In the chemical industry, the metering pump can realize the adjustment of flow size through adjusting plunger stroke length. The stroke adjustment of the metering pump can be divided into manual stroke adjustment, electric stroke adjustment and pneumatic stroke adjustment, and the electric stroke adjustment has obvious advantages due to high efficiency and accuracy, particularly under the condition that the pump does not stop working.

Electric stroke regulator function is different greatly on the market, but there is very big difference to the precision and the stability of stroke control, the leading cause lies in electric stroke regulator and transmission unit's connection structure on has very big difference, the electric stroke control of measuring pump on the market adopts nut screw to connect mostly, however nut screw installation dismantlement is comparatively troublesome, waste time and energy, greatly reduced work efficiency, and adjusting screw on the market is not good to the centering nature, easy wearing and tearing and blocking, especially under the great condition of plunger outlet pressure, the electrical control process is not steady, greatly reduced the stability of adjusting.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a structure is adjusted to measuring pump electric stroke to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: an electric stroke adjusting structure of a metering pump comprises a motor, a flange plate, a connecting chamber, a central shaft, a first positioning bearing, a shaft sleeve, a fixed bearing, a connecting sleeve, an adjusting screw rod, a transmission box body, a rotating shaft, a hand wheel, a guide rod, a sealing chamber, a top cover, a positioning groove, a second positioning bearing, a clamping groove, a cavity, a fixed plate, a first flange hole, a second flange hole and a limiting ring, wherein the top end of the connecting chamber is fixedly connected with the bottom end of the flange plate through a bolt, the top end of the flange plate is fixedly connected with the bottom of the transmission box body through a bolt, the transmission box body is hollow and is divided into a cavity, the fixed plate is arranged at the upper part in the transmission box body, the central shaft penetrates through the center of the fixed plate, the first positioning bearing is fixedly connected with the outer circumference of the upper part in the center of the central shaft, the outer circumference of the first positioning bearing is fixedly connected with the inner circumference of the center of the bottom of the fixed plate, the utility model discloses a lead screw, including transmission box, motor, drive box, clamping groove, regulation lead screw, connecting sleeve, fixed connection chamber, motor output, and the connecting sleeve is connected with the regulation lead screw, transmission box one side fixed mounting has the motor, the motor output drives the center pin through planetary gear mechanism, transmission box other end fixed mounting has the hand wheel, the hand wheel center is fixed with the pivot, the pivot drives the center pin through worm gear, the draw-in groove has been seted up at center bottom of the center pin, and draw-in groove and regulation lead screw top joint, upper portion has cup jointed the adapter sleeve in the regulation lead screw, and the adapter sleeve rotates with the regulation lead screw to be connected, fixing bearing has been cup jointed at the outer circumference center of adapter sleeve, circumference fixed connection in the outer circumference of fixing bearing and the ring flange top, fixing bearing top and axle sleeve bottom fixed connection, lower part through connection chamber center in the regulation lead screw, and adjust the lead screw and be connected with the plunger cooperation through variable eccentric structure.

Furthermore, a second positioning bearing is fixedly sleeved on the middle lower part of the central shaft and is rotatably connected with the central shaft, and the outer circumference of the central shaft is fixedly connected with the inner circumference of the center of the bottom surface in the transmission box body.

Furthermore, a plurality of first flange holes and second flange holes are uniformly formed in the flange plate.

Furthermore, a plurality of limiting rings are uniformly installed on the outer circumference of the central shaft, and the limiting rings at the top and the bottom are respectively attached to the bottom of the first positioning bearing and the top of the second positioning bearing.

Furthermore, a positioning groove is formed in the center of the top of the central shaft and is in threaded connection with the bottom of the guide rod, the top of the guide rod is fixedly connected with the center of the bottom of the top cover, the top cover covers the center of the top of the sealing chamber, and the bottom of the sealing chamber is fixedly connected with the top of the transmission box body through bolts.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is: the utility model discloses a square is connected and outer bearing structure in the transmission unit of electronic stroke adjustment mechanism and metering pump adopts, adjusts the lead screw and directly pegs graft with the center pin, and installation and dismantlement are all very convenient, have greatly improved dismouting efficiency, and the installation through first location bearing, axle sleeve, fixing bearing and adapter sleeve is favorable to guaranteeing the center pin and adjusting the centering nature of lead screw simultaneously, has avoided adjusting the phenomenon emergence that the lead screw weared and teared and blocked, has improved the stability of operation.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a front sectional view of the overall structure of the present invention;

fig. 2 is an enlarged schematic view of the area a in fig. 2 according to the present invention;

FIG. 3 is a side sectional view of the overall structure of the present invention;

fig. 4 is a top cross-sectional view of the present invention;

in the figure: 1. a motor; 2. a flange plate; 3. a connection chamber; 4. a central shaft; 5. a first positioning bearing; 6. a shaft sleeve; 7. fixing the bearing; 8. connecting sleeves; 9. adjusting the lead screw; 10. a transmission case body; 11. a rotating shaft; 12. a hand wheel; 13. a guide bar; 14. a sealed chamber; 15. a top cover; 16. positioning a groove; 17. a second positioning bearing; 18. a card slot; 19. a cavity; 20. a fixing plate; 21. a first flange hole; 22. a second flange hole; 23. a limit ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an electric stroke adjusting structure of a metering pump comprises a motor 1, a flange plate 2, a connecting chamber 3, a central shaft 4, a first positioning bearing 5, a shaft sleeve 6, a fixed bearing 7, a connecting sleeve 8, an adjusting screw 9, a transmission box body 10, a rotating shaft 11, a hand wheel 12, a guide rod 13, a sealing chamber 14, a top cover 15, a positioning groove 16, a second positioning bearing 17, a clamping groove 18, a cavity 19, a fixing plate 20, a first flange hole 21, a second flange hole 22 and a limiting ring 23, wherein the top end of the connecting chamber 3 is fixedly connected with the bottom end of the flange plate 2 through a bolt, the top end of the flange plate 2 is fixedly connected with the bottom of the transmission box body 10 through a bolt, the transmission box body 10 is hollow, the hollow part is the cavity 19, the fixing plate 20 is arranged at the middle upper part inside the transmission box body 10, the central shaft 4 penetrates through the center of the fixing plate 20, the first positioning bearing 5 is fixedly sleeved on the outer circumference of the middle upper part of the central shaft 4, the first positioning bearing 5 is fixedly connected with the inner circumference of the bottom of the fixing plate 20, a second positioning bearing 17 is fixedly sleeved on the middle lower part of the central shaft 4, the second positioning bearing 17 is rotatably connected with the central shaft 4, the outer circumference of the central shaft 4 is fixedly connected with the inner circumference of the center of the bottom surface inside the transmission case 10, which is beneficial to positioning and fixing the central shaft 4, a plurality of limiting rings 23 are uniformly arranged on the outer circumference of the central shaft 4, the limiting rings 23 at the top and the bottom are respectively attached to the bottom of the first positioning bearing 5 and the top of the second positioning bearing 17, which is beneficial to positioning and fixing the central shaft 4, a positioning groove 16 is arranged at the center of the top of the central shaft 4, the positioning groove 16 is in threaded connection with the bottom of the guide rod 13, the top of the guide rod 13 is fixedly connected with the center of the bottom of the top cover 15, the top cover 15 is covered on the center of the top of the sealing chamber 14, the bottom of the sealing chamber 14 is fixedly connected with the top of the transmission case 10 through bolts, which is beneficial to ensuring the centering performance of the central shaft 4, and a motor 1 is fixedly arranged on one side of the transmission case 10, the output end of a motor 1 drives a central shaft 4 through a planetary gear mechanism, a hand wheel 12 is fixedly installed at the other end of a transmission box body 10, a rotating shaft 11 is fixed at the center of the hand wheel 12, the rotating shaft 11 drives the central shaft 4 through a worm gear, a clamping groove 18 is formed in the center of the bottom of the central shaft 4, the clamping groove 18 is clamped with the top of an adjusting screw 9, a connecting sleeve 8 is sleeved at the middle upper portion of the adjusting screw 9, the connecting sleeve 8 is rotatably connected with the adjusting screw 9, a fixed bearing 7 is sleeved at the center of the outer circumference of the connecting sleeve 8, the outer circumference of the fixed bearing 7 is fixedly connected with the inner circumference of the top of a flange plate 2, a plurality of first flange holes 21 and second flange holes 22 are uniformly formed in the flange plate 2, the top of the fixed bearing 7 is fixedly connected with the bottom of a shaft sleeve 6, the middle lower portion of the adjusting screw 9 penetrates through the center of a connecting chamber 3, and the adjusting screw 9 is connected with a plunger in a matching mode through a variable eccentric structure; the utility model discloses an in the use, at first open motor 1, motor 1 output begins to rotate, then drive center pin 4 through planetary gear mechanism and rotate, drive adjusting screw 9 afterwards and rotate, then adjusting screw 9 drives the plunger through variable eccentric structure and is linear motion, thereby adjust the size of the stroke of plunger, also can rotate hand wheel 12 simultaneously and drive pivot 11 and rotate, then drive center pin 4 through the worm gear and rotate, thereby drive adjusting screw 9 and rotate, realize the regulation of the stroke of plunger, and manual regulation and electrical control switch smoothly, the utility model discloses an electric stroke adjusting structure adopts the structure of interior square connection plus outer bearing with the drive unit of metering pump, adjusting screw 9 directly pegs graft with center pin 4, it is all very convenient to install and dismantle, greatly improved dismouting efficiency, simultaneously through first locating bearing 5, The installation of axle sleeve 6, fixed bearing 7, adapter sleeve 8 is favorable to guaranteeing center pin 4 and adjusting lead screw 9's centering nature, has avoided adjusting lead screw 9 wearing and tearing and has blocked the phenomenon emergence, has improved the stability of operation.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a structure is adjusted to electronic stroke of measuring pump, including motor (1), ring flange (2), connect room (3), center pin (4), first location bearing (5), axle sleeve (6), fixing bearing (7), adapter sleeve (8), adjust lead screw (9), transmission case (10), pivot (11), hand wheel (12), guide arm (13), seal chamber (14), top cap (15), constant head tank (16), second location bearing (17), draw-in groove (18), cavity (19), fixed plate (20), first flange hole (21), second flange hole (22) and spacing ring (23), its characterized in that: the top end of the connecting chamber (3) is fixedly connected with the bottom end of the flange plate (2) through a bolt, the top end of the flange plate (2) is fixedly connected with the bottom of the transmission box body (10) through a bolt, the transmission box body (10) is hollow, the hollow part is a cavity (19), a fixing plate (20) is installed at the middle upper part inside the transmission box body (10), a central shaft (4) penetrates through the center of the fixing plate (20), a first positioning bearing (5) is fixedly sleeved on the outer circumference of the middle upper part of the central shaft (4), the outer circumference of the first positioning bearing (5) is fixedly connected with the inner circumference of the center of the bottom of the fixing plate (20), a motor (1) is fixedly installed on one side of the transmission box body (10), the output end of the motor (1) drives the central shaft (4) through a planetary gear mechanism, and a hand wheel (12) is fixedly installed on the other end of the transmission box body (10), hand wheel (12) center is fixed with pivot (11), pivot (11) drive center pin (4) through worm gear, draw-in groove (18) have been seted up at center pin (4) bottom center, and draw-in groove (18) and regulation lead screw (9) top joint, it has cup jointed adapter sleeve (8) to adjust lead screw (9) well upper portion, and adapter sleeve (8) rotate with regulation lead screw (9) and be connected, fixing bearing (7) have been cup jointed at the outer circumference center of adapter sleeve (8), circumference fixed connection in fixing bearing (7) outer circumference and ring flange (2) top, fixing bearing (7) top and axle sleeve (6) bottom fixed connection, adjust lead screw (9) well lower part through connection room (3) center, and adjust lead screw (9) and be connected through variable eccentric structure and plunger cooperation.

2. The electric stroke adjusting structure of a metering pump according to claim 1, wherein: the middle lower part of the central shaft (4) is fixedly sleeved with a second positioning bearing (17), the second positioning bearing (17) is rotatably connected with the central shaft (4), and the outer circumference of the central shaft (4) is fixedly connected with the inner circumference of the center of the inner bottom surface of the transmission box body (10).

3. The electric stroke adjusting structure of a metering pump according to claim 1, wherein: a plurality of first flange holes (21) and second flange holes (22) are uniformly formed in the flange plate (2).

4. The electric stroke adjusting structure of a metering pump according to claim 1, wherein: a plurality of limiting rings (23) are uniformly installed on the outer circumference of the central shaft (4), and the limiting rings (23) at the top and the bottom are respectively attached to the bottom of the first positioning bearing (5) and the top of the second positioning bearing (17).

5. The electric stroke adjusting structure of a metering pump according to claim 1, wherein: the center shaft (4) top center is seted up constant head tank (16), and constant head tank (16) and guide arm (13) bottom threaded connection, guide arm (13) top and top cap (15) bottom center fixed connection, top cap (15) lid closes at seal chamber (14) top center, bolt fixed connection is passed through with transmission box (10) top in seal chamber (14) bottom.