CN215762090U - Plunger pump - Google Patents

Abstract

The utility model discloses a plunger pump, which comprises a motor, a driving mechanism, a plunger and a pump body, wherein the driving mechanism comprises a shell with a gear ring, a sun wheel connected with an output shaft of the motor and arranged in the shell, three planet wheels meshed between the gear ring and the sun wheel, a planet carrier connected with the three planet wheels, a connecting shaft connected to the planet carrier and an eccentric block arranged on the connecting shaft, the eccentric block and the connecting shaft are eccentrically arranged, the gear ring and the shell are integrally formed, the plunger can move in the pump body in a reciprocating manner, working containing cavities are formed at two ends of a cavity for the plunger to move in the pump body, a groove is formed in the middle of the plunger, the eccentric block is rotatably arranged in the groove and drives the plunger to move, and water containing grooves are formed at two opposite ends of the plunger in an inwards recessed manner. According to the plunger pump, water in the water containing tank can cool the plunger, so that the plunger is guaranteed to work stably, the service life is long, the structure is simple, and the plunger pump is convenient to popularize and use.

Description

Plunger pump

Technical Field

The utility model relates to the technical field of water pumps, in particular to a plunger pump.

Background

The plunger pump is an important device in a hydraulic system, changes the volume of the sealed working cavity by means of the reciprocating motion of the plunger in the pump body so as to realize the inward water suction through the water inlet channel and the outward water pumping through the water outlet channel, and has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like.

At present, in the existing plunger pump on the market, an eccentric wheel for driving a plunger to reciprocate is usually driven by a speed change gear to rotate, and the speed change gear is stressed on a single side during working, so that the gear is easy to fatigue, and the gear is deformed or damaged. Meanwhile, when the plunger moves at a high speed in a reciprocating manner, heat is generated between the plunger and the pump body due to friction, and the plunger pump is very easy to deform or even crack after being heated for a long time, so that the service life of the plunger is further shortened.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: in order to overcome the defects in the prior art, a plunger pump with long service life is provided.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a plunger pump comprises a motor, a driving mechanism, a plunger and a pump body, wherein the driving mechanism comprises a shell with a gear ring, a sun wheel connected with an output shaft of the motor and arranged in the shell, three planet wheels meshed between the gear ring and the sun wheel, a planet carrier connected with the three planet wheels, a connecting shaft connected on the planet carrier and an eccentric block arranged on the connecting shaft, the eccentric block and the connecting shaft are eccentrically arranged, the gear ring and the shell are integrally formed, the plunger can move in the pump body in a reciprocating manner, two ends of a cavity for the plunger to move in the pump body form a working cavity, the middle part of the plunger is provided with a groove, the eccentric block is rotatably arranged in the groove and drives the plunger to move, and two opposite ends of the plunger are inwards sunken to form water containing grooves.

Furthermore, the water containing grooves are arranged along the axial direction of the plunger, the two water containing grooves are symmetrically arranged relative to the groove, and the depth of the water containing grooves along the axial direction is greater than the distance between the bottom wall of the water containing groove and the side wall of the groove corresponding to the groove.

Furthermore, slopes are arranged on two opposite groove walls of the groove along the length direction of the plunger.

Further, the connecting axle fixed mounting be in the center department of planet carrier, the connecting axle is kept away from the positioning disk is installed to the one end of planet carrier, the positioning disk epirelief is equipped with the location axle, the location axle with the eccentric setting of positioning disk, eccentric block cover is established epaxial in the location.

Furthermore, the pump body is provided with a mounting groove, a bearing is installed between the positioning disc and the mounting groove, the outer ring of the bearing is fixedly embedded in the groove wall of the mounting groove, and the inner ring of the bearing is fixedly sleeved outside the positioning disc.

Further, the casing includes first casing and the second casing of butt joint each other, first casing with the organism fixed connection of motor, the ring gear forms on the first casing, sun gear, planet wheel and planet carrier accept in the cavity that forms after first casing and the second casing is connected.

Furthermore, the pump body includes the main part and installs two end covers in the relative both sides of main part, the main part with form after the end cover is connected and supply the cavity that the plunger removed, the plunger passes through the main part slidably, the work appearance chamber is formed on the end cover.

Furthermore, a water inlet channel and a water outlet channel are formed in the main body, a water inlet groove and a water outlet groove are formed in each end cover, the water inlet grooves and the water outlet grooves are communicated with the working accommodating cavity, two ends of each water inlet channel are communicated with the two water inlet grooves respectively, two ends of each water outlet channel are communicated with the two water outlet grooves respectively, water inlet one-way valves are installed in two ends of each water inlet channel respectively, and water outlet one-way valves are installed at two ends of each water outlet channel respectively.

Further, still be connected with inlet tube and outlet pipe in the main part, the inlet tube communicate in intake passage is last to be located two position between the check valve of intaking, the outlet pipe communicate in exit passage is last to be located two position between the check valve of intaking, just the inlet pipe is followed the axial extension of connecting axle, the outlet pipe with inlet tube mutually perpendicular.

The utility model has the beneficial effects that: according to the plunger pump provided by the utility model, the planet wheels are stressed on two sides, the deformation is effectively avoided, the gear ring and the shell are integrated into a whole structure, the installation is convenient, meanwhile, the water in the water containing grooves can cool the plunger by arranging the water containing grooves on two sides of the plunger, so that the plunger is ensured to work stably, the service life is long, the cooling process can be realized without an additional cooling mechanism, the structure is simple, and the popularization and the use are convenient.

Drawings

The utility model is further illustrated by the following figures and examples.

Fig. 1 is a perspective view of a plunger pump according to a first embodiment of the present invention;

FIG. 2 is a partially exploded view of the plunger pump shown in FIG. 1;

FIG. 3 is an exploded view of the drive mechanism in the plunger pump shown in FIG. 2;

FIG. 4 is an exploded view of the pump body of the plunger pump of FIG. 2;

FIG. 5 is a perspective view of the body in the pump body shown in FIG. 4;

FIG. 6 is a top view of the plunger pump shown in FIG. 1;

FIG. 7 is a cross-sectional view A-A of the plunger pump of FIG. 6;

FIG. 8 is a cross-sectional view B-B of the plunger pump of FIG. 6;

FIG. 9 is a perspective view of a plunger of the plunger pump of FIG. 2;

fig. 10 is a perspective view of a plunger pump according to a second embodiment of the utility model;

FIG. 11 is a top view of the plunger pump shown in FIG. 10;

FIG. 12 is a cross-sectional view of the plunger pump of FIG. 11 taken along C-C;

FIG. 13 is a partially exploded view of the plunger pump shown in FIG. 10;

fig. 14 is a perspective view of a valve cartridge in the plunger pump shown in fig. 12.

In the figure: 10. a motor, 20, a driving mechanism, 21, a gear ring, 22, a housing, 221, a first housing, 222, a second housing, 23, a sun gear, 24, a planet gear, 25, a planet carrier, 26, a connecting shaft, 261, a positioning disc, 262, a positioning shaft, 263, a bearing, 27, an eccentric block, 30, a plunger, 301, a groove, 302, a water containing groove, 303, a slope, 40, a pump body, 401, a working cavity, 402, a mounting groove, 41, a main body, 411, a water inlet channel, 412, a water outlet channel, 413, a water inlet check valve, 414, a water outlet check valve, 415, a water inlet pipe, 4151, a tapered flange, 4152, a connecting column, 416, a water outlet pipe, 417, a valve core, 4171, a guide column, 4172, a sealing disc, 4173, a water guide groove, 4174, a water outlet groove, 418, a stepped groove, 419, an elastic element, 42, an end cover, 421, a water inlet groove, a water outlet groove, 43, an adapter, 431, a connecting cylinder, 432, an adapter, 433. and (4) extruding the container.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

Example one

Referring to fig. 1-3, 6, 7 and 9, in an embodiment of the present invention, a plunger pump is provided, the plunger pump includes a motor 10, a driving mechanism 20, a plunger 30 and a pump body 40, the motor 10 is connected to the driving mechanism 20, the driving mechanism 20 drives the plunger 30 to reciprocate, specifically, the driving mechanism 20 includes a housing 22 with a ring gear 21, a sun gear 23 connected to an output shaft of the motor 10 and disposed in the housing 22, three planet gears 24 engaged between the ring gear 21 and the sun gear 23, a planet carrier 25 connected to the three planet gears 24, a connecting shaft 26 connected to the planet carrier 25, and an eccentric block 27 mounted on the connecting shaft 26, the eccentric block 27 is in a circular ring structure, the eccentric block 27 is eccentrically disposed on the connecting shaft 26, the ring gear 21 and the housing 22 are integrally formed, the plunger 30 is reciprocally movable in the pump body 40, working cavities for the plunger 30 to move in the pump body 40 form working cavities 401 at two ends, the middle part of the plunger 30 is provided with a groove 301, the eccentric block 27 is rotatably arranged in the groove 301 and drives the plunger 30 to move, and the two opposite ends of the plunger 30 are inwards sunken to form water containing grooves 302.

According to the plunger pump, the driving mechanism 20 is improved from the traditional speed change gear with single-side stress into a planetary gear mechanism, so that the planetary gear 24 is stressed on two sides, the condition that the planetary gear 24 cannot normally work due to deformation caused by single-side stress is avoided, meanwhile, the gear ring 21 is changed into a structure which is integrated with the shell body through a conventional single metal piece, materials are saved, and the installation is facilitated. In addition, the water containing groove 302 formed by the inward concave of the two ends of the plunger 30 can contain water, and the water in the water containing groove 302 can cool the plunger 30 in the process of water absorption and pumping of the plunger 30, so that the stable work of the plunger 30 is ensured, and the cooling process can be realized without an additional cooling mechanism, and the plunger cooling device is simple in structure and ingenious in design.

Referring to fig. 7 again, in one embodiment, the water receiving grooves 302 are disposed along the axial direction of the plunger 30, the two water receiving grooves 302 are symmetrically disposed with respect to the groove 301, and the depth of the water receiving grooves 302 along the axial direction is greater than the distance between the bottom wall of the water receiving groove 302 and the side wall of the groove corresponding to the groove 301. Thus, more water can enter the two ends of the plunger 30, and the cooling effect of the plunger 30 is ensured.

In addition, referring to fig. 9 again, the groove 301 is provided with slopes 303 on two opposite groove walls along the length direction of the plunger 30, and the slope 303 can guide the installation of the eccentric block 27, so that a user can install the eccentric block 27 into the groove 301 quickly.

Further, the plunger 30 is made of a non-metal material, such as a ceramic material or a high-strength plastic doped with carbon fiber, so that the cost and weight can be reduced, and the production cost can be controlled.

Referring to fig. 3 again, in the present embodiment, the connecting shaft 26 is fixedly installed at the center of the planet carrier 25, a positioning plate 261 is installed at one end of the connecting shaft 26 away from the planet carrier 25, a positioning shaft 262 is convexly installed on the positioning plate 261, the positioning shaft 262 and the positioning plate 261 are eccentrically arranged, and the eccentric block 27 is sleeved on the positioning shaft 262. During operation, the planet carrier 25 rotates to drive the connecting shaft 26 to rotate together with the positioning disc 261, and further drive the positioning shaft 262 to rotate together with the eccentric block 27, and when the eccentric block 27 rotates, the two opposite groove walls of the groove 301 can be pushed to further drive the plunger 30 to move back and forth, so that the size of the accommodating cavity of the working accommodating cavity 401 is changed, and water absorption and water pumping are realized.

In addition, referring to fig. 3 and fig. 4, the pump body 40 is provided with an installation groove 402, a bearing 263 is installed between the positioning plate 261 and the installation groove 402, an outer ring of the bearing 263 is fixedly embedded in a groove wall of the installation groove 402, and an inner ring of the bearing 263 is fixedly sleeved outside the positioning plate 261. By providing the bearing 263, the rotational stability of the connecting shaft 26 can be improved, and the connecting shaft 26 is prevented from shaking.

The housing 22 includes a first housing 221 and a second housing 222 that are butted with each other, the first housing 221 is fixedly connected to the body of the motor 10, the ring gear 21 is formed on the first housing 221, and the sun gear 23, the planet gear 24, and the planet carrier 25 are accommodated in a cavity formed by connecting the first housing 221 and the second housing 222.

Referring to fig. 4 and 7, in the present embodiment, the pump body 40 includes a main body 41 and two end caps 42 installed at two opposite sides of the main body 41, the main body 41 is connected with the end caps 42 to form a cavity for the plunger 30 to move, the plunger 30 slidably penetrates through the main body 41, and the working cavity 401 is formed on the end caps 42. In an embodiment, not shown, a seal is provided between the wall of the cavity in the pump body 40 in which the plunger 30 moves and the plunger 30, said seal acting as a seal to prevent water from leaking between the plunger 30 and the pump body 40.

Further, referring to fig. 4, 5 and 8, a water inlet channel 411 and a water outlet channel 412 are disposed on the main body 41, a water inlet channel 421 and a water outlet channel 422 are disposed on each end cover 42, the water inlet channel 421 and the water outlet channel 422 are both communicated with the working cavity 401 through a water channel (not shown) disposed in the end cover 42, two ends of the water inlet channel 411 are respectively communicated with the two water inlet channels 421, the water outlet channel 412 is respectively communicated with the two water outlet channels 422, two ends of the water inlet channel 411 are respectively provided with a water inlet check valve 413, and two ends of the water outlet channel 412 are respectively provided with a water outlet check valve 414. During operation, the plunger 30 is driven by the driving mechanism 20 to reciprocate, and at this time, of the two working chambers 401 at the two ends of the plunger 30, the volume of one working chamber 401 is reduced, and the volume of the other working chamber 401 is increased. When the volume of the working cavity 401 is increased, external water is sucked into the working cavity 401 under the action of negative pressure, specifically, the external water firstly enters the water inlet passage 411, then the water inlet check valve 413 is pushed open to enter the water inlet groove 421, and then enters the working cavity 401; when the volume of working chamber 401 decreases, the water therein is forced out into outlet channel 422, then pushes open outlet check valve 414 into outlet channel 412, and finally is pumped out to the outside.

In addition, the main body 41 is further connected with a water inlet pipe 415 and a water outlet pipe 416, the water inlet pipe 415 is communicated with a position, located between the two water inlet check valves 413, on the water inlet passage 411, the water outlet pipe 416 is communicated with a position, located between the two water outlet check valves 414, on the water outlet passage 412, the water inlet pipe 415 extends along the axial direction of the connecting shaft 26, and the water outlet pipe 416 is perpendicular to the water inlet pipe 415. When the water-saving washing machine is used, the water inlet pipe 415 is connected with the water container through the hose, water in the water container is sucked and then pumped out through the water outlet pipe 416, and the pumped water can be used for a user to wash an automobile, the ground, doors and windows.

According to the plunger pump provided by the embodiment of the utility model, the planet wheels 24 are stressed on two sides, so that the deformation is effectively avoided, the gear ring 21 and the shell are integrated into a whole structure, the installation is convenient, meanwhile, the water containing grooves 302 are arranged on two sides of the plunger 30, the water in the water containing grooves 302 can play a cooling role on the plunger 30, so that the plunger 30 is ensured to stably work, the service life is long, the cooling process can be realized without an additional cooling mechanism, the structure is simple, and the popularization and the use are convenient.

Example two

Referring to fig. 10, a second embodiment of the present invention provides a plunger pump, which is different from the first embodiment mainly in that: in the first embodiment, the water inlet check valve 413 and the water outlet check valve 414 are both separate components, and when the water inlet check valve 413 and the water outlet check valve 414 are used, the whole water inlet check valve 413 and the whole water outlet check valve 414 are respectively installed in the water inlet passage 411 and the water outlet passage 412, and then the end cover 42 is installed on the main body 41. In the embodiment, the structure of the one-way valve is directly integrated in the main body 41, when the end cover 42 and the main body 41 are installed in place by a user, the one-way valve is also installed in place, the independent one-way valve and the sealing ring do not need to be installed intentionally, fixing and sealing can be achieved, the operation is simple and convenient, and the installation efficiency is improved.

Specifically, referring to fig. 11 and 12, the valve core 417 is slidably mounted at an end of the water inlet passage 411 and an end of the end cap 42 corresponding to the water outlet passage 412, the sliding valve core 417 can open or close the corresponding water inlet and outlet passages, stepped grooves 418 are formed at ends of the end cap 42 corresponding to the water inlet passage 411 and the water outlet passage 412, an elastic member 419 is fixedly connected to a groove bottom wall of the stepped grooves 418, the elastic member 419 abuts against the valve core 417, and when the end cap 42 is connected to the main body 41, the valve core 417 can close the water inlet passage 411 and the water outlet passage 412 under the elastic force of the elastic member 419.

During installation, the valve plug 417 is firstly inserted into one end of the water inlet channel 411 and the end covers 42, and then the two end covers 42 are fixedly installed at two sides of the main body 41, at this time, one end of the elastic piece 419 can be supported on the valve plug 417, so that a sealing effect is realized, and in addition, as one end of the elastic piece 419 is connected with the bottom wall of the stepped groove 418, the elastic piece 419 can be effectively prevented from being separated from the stepped groove 418. When the water-saving type water-saving valve is used, when the volume of the working cavity 401 is increased and water is absorbed, the water in the water inlet channel 411 overcomes the elastic force of the elastic piece 419 to jack the valve core 417 at the water inlet channel 411, and then enters the working cavity 401 through the water inlet groove 421; when the volume of the working chamber 401 is reduced to squeeze water, the water flowing through the water outlet channel 422 overcomes the elastic force of the elastic member 419 to push the valve core 417 at the water outlet passage 412 open, and then is squeezed to the outside of the plunger pump through the water outlet passage 412 and the water outlet pipe 416.

In the present embodiment, the elastic member 419 is a spring, and it is understood that in other embodiments not shown, the elastic member 419 may also be a rigid and elastic element such as a stainless steel elastic sheet or a copper elastic sheet, which is not limited herein.

In addition, referring to fig. 14, the cross-section of the valve core 417 is a T-shaped structure, the valve core 417 includes a guide post 4171 and a sealing disc 4172 connected with each other, the guide post 4171 guides the movement of the valve core 417, for example, the guide post 4171 corresponding to the water inlet passage 411 is slidably installed in the water inlet passage 411, a disc surface of the sealing disc 4172 connected with the guide post 4171 is used for sealing a port of the water inlet passage 411, a water guide groove 4173 is axially formed on an outer wall of the guide post 4171, and a water passing groove 4174 is formed at an edge of the sealing disc 4172. When the elastic member 419 is in a natural state, the seal disk 4172 blocks the port of the water inlet passage 411; when the valve core 417 slides under the negative pressure, the sealing disc 4172 opens the port of the water inlet passage 411, and at this time, the water in the water inlet passage 411 passes through the water guide groove 4173 and the water passing groove 4174 in sequence, enters the water inlet groove 421, and then enters the working cavity 401.

In addition, the guide post 4171 and the seal disk 4172 are integrally formed for ease of processing.

Referring to fig. 11-13, in the plunger pump of the second embodiment, the adaptor 43 is further installed on the water inlet pipe 415, and the adaptor 43 is used for connecting a water container. Specifically, a conical flange 4151 is arranged on the outer wall of the lower end of the water inlet pipe 415, a connecting column 4152 is arranged on the water inlet pipe 415 above the conical flange 4151, the adapter 43 comprises a connecting cylinder 431 and an adapter cylinder 432 which are connected with each other, the connecting cylinder 431 is in threaded connection with the connecting column 4152, and the adapter cylinder 432 is used for being connected with a water container (such as a beverage bottle). When the hose expander is used, the hose is sleeved on the conical flange 4151 at the lower end of the water inlet pipe 415, and the conical flange 4151 can enable the hose to be partially deformed, so that the hose is expanded tightly, and the falling of the hose can be effectively avoided. Then the connecting cylinder 431 is screwed on the connecting column 4152, the container port of the water container is arranged on the adapter cylinder 432, and at the moment, the lower end of the hose is positioned at the bottom of the water container and can be used for pumping water.

Further, a squeezing barrel 433 is arranged in the adapter barrel 432, the squeezing barrel 433 is made of plastic, when the adapter 43 is installed on the water inlet pipe 415, the squeezing barrel 433 is sleeved on the hose, the squeezing barrel can deform to squeeze the hose on the conical flange 4151, and the hose is further prevented from falling off.

In addition, the adapter 43 structure of the second embodiment can also be applied to the first embodiment.

The second embodiment is similar to the first embodiment in terms of the structure and the position connection relationship of the parts, which are not mentioned in the second embodiment, and is not limited herein.

In light of the foregoing description of preferred embodiments in accordance with the utility model, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the scope of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (9)

1. A plunger pump, characterized by: including motor, actuating mechanism, plunger and the pump body, actuating mechanism including the casing that has the ring gear, with the output shaft of motor is connected and locates sun gear in the casing, mesh in the ring gear with three planet wheel between the sun gear, with three planet carrier that the planet wheel is connected, connect connecting axle on the planet carrier and install connecting epaxial eccentric block, eccentric block with connecting axle eccentric settings, the ring gear with casing integrated into one piece, the plunger can reciprocate in the pump body, be used for in the pump body supplying the both ends of the cavity that the plunger removed form the work and hold the chamber, the middle part of plunger is seted up flutedly, the eccentric block rotationally locates in the recess and drive the plunger removes, the both ends that the plunger is relative inwards sunken to be formed with and hold the basin.

2. The plunger pump of claim 1, wherein: the water containing grooves are arranged along the axial direction of the plunger, the two water containing grooves are symmetrically arranged relative to the groove, and the depth of the water containing grooves along the axial direction is greater than the distance from the bottom wall of the water containing groove to the side wall of the groove corresponding to the groove.

3. The plunger pump of claim 2, wherein: slopes are arranged on two opposite groove walls of the groove along the length direction of the plunger.

4. The plunger pump of claim 1, wherein: connecting axle fixed mounting is in the center department of planet carrier, the connecting axle is kept away from the positioning disk is installed to the one end of planet carrier, the positioning disk epirelief is equipped with the location axle, the location axle with the eccentric setting of positioning disk, eccentric block cover is established epaxial in the location.

5. The plunger pump of claim 4, wherein: the pump body is provided with a mounting groove, the positioning disc is provided with a bearing between the mounting groove, the outer ring of the bearing is fixedly embedded in the groove wall of the mounting groove, and the inner ring of the bearing is fixedly sleeved outside the positioning disc.

6. The plunger pump of claim 1, wherein: the casing includes first casing and the second casing of mutual butt joint, first casing with the organism fixed connection of motor, the ring gear form in on the first casing, sun gear, planet wheel and planet carrier accept in the cavity that first casing with the second casing is connected the back and is formed.

7. The plunger pump of claim 1, wherein: the pump body comprises a main body and two end covers arranged on two opposite sides of the main body, the main body is connected with the end covers to form a cavity for the plunger to move, the plunger slidably penetrates through the main body, and the working cavity is formed in the end covers.

8. The plunger pump of claim 7, wherein: the water inlet channel and the water outlet channel are arranged on the main body, a water inlet groove and a water outlet groove are formed in each end cover, the water inlet grooves and the water outlet grooves are communicated with the working accommodating cavity, the two ends of each water inlet channel are communicated with the two water inlet grooves respectively, the two ends of each water outlet channel are communicated with the two water outlet grooves respectively, water inlet one-way valves are installed in the two ends of each water inlet channel respectively, and water outlet one-way valves are installed at the two ends of each water outlet channel respectively.

9. The plunger pump of claim 8, wherein: still be connected with inlet tube and outlet pipe in the main part, the inlet tube communicate in lie in two on the inhalant canal position between the check valve of intaking, the outlet pipe communicate in lie in two on the exhalant canal position between the check valve of exhalant canal, just the inlet pipe is followed the axial extension of connecting axle, the outlet pipe with inlet tube mutually perpendicular.

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