CN215633578U - Miniature duplex plunger pump body - Google Patents
Miniature duplex plunger pump body Download PDFInfo
- Publication number
- CN215633578U CN215633578U CN202121545728.4U CN202121545728U CN215633578U CN 215633578 U CN215633578 U CN 215633578U CN 202121545728 U CN202121545728 U CN 202121545728U CN 215633578 U CN215633578 U CN 215633578U
- Authority
- CN
- China
- Prior art keywords
- plunger
- water
- hole
- water suction
- cavity
- 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
Images
Landscapes
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses a miniature duplex plunger pump body, and belongs to the field of plunger pumps. The pump comprises a pump body, an upper pump cover and a lower pump cover which are integrally formed. The pump body is provided with a water inlet pipeline, a water inlet cavity, a first group of water suction holes, a second group of water suction holes, a first group of water discharge holes, a second group of water discharge holes, a first plunger hole, a second plunger hole, a first plunger, a second plunger, a water outlet cavity and a water outlet pipeline; a water suction cavity, a working cavity, a drainage cavity and a connecting channel are arranged in the upper pump cover/the lower pump cover; the first plunger and the second plunger are respectively driven by the first motor, the second motor and respective eccentric mechanisms to reciprocate back and forth, so that liquid is sucked and discharged. The utility model arranges two sets of plunger pump structures in the pump body of a minitype duplex plunger pump, which has small volume, compact structure, convenient use, low manufacturing cost, convenient pressure and flow regulation and long service life of the motor connected with the pump body.
Description
Technical Field
The utility model relates to the field of plunger pumps, in particular to a miniature duplex plunger pump body.
Background
The plunger pump realizes the suction and discharge of liquid by means of the change of the volume of the sealed working cavity through the reciprocating motion of the plunger in the pump body. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like.
The plunger pump is widely applied to occasions with high pressure, large flow and flow needing to be adjusted. The existing plunger pump generally adopts a pump body and is powered by a motor, the pressure and flow provided by a single plunger pump are smaller, and if larger flow and pressure are needed, the existing plunger pump generally solves the problems by the following two methods:
one approach is to combine two or more plunger pumps to connect the water inlets/outlets of multiple plunger pumps together via external piping to achieve greater flow and pressure. However, the combined use of a plurality of plunger pumps and the connection through the external pipeline lead to large overall volume, complex arrangement of the external pipeline and inconvenient use.
The other method is to enlarge the plunger pump and use a pump body structure with large volume and a motor with large specification as power. However, the cost of the plunger pump is increased sharply due to the large-size pump body structure and the large-size motor, and the manufacturing cost is high; the working current of the motor is large, so that the service life of the motor is influenced; the pressure and flow regulation is inconvenient, redundant power needs to be unloaded when small-pressure and small-flow operation is carried out, the power of a motor is wasted, and the economical efficiency is poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a miniature duplex plunger pump body which is small in size, compact in structure, convenient to use, low in manufacturing cost, convenient to adjust pressure and flow, and long in service life of a motor connected with the miniature duplex plunger pump body.
The technical scheme provided by the utility model is as follows:
the utility model provides a miniature pair plunger pump body which characterized in that sets up including pump body and symmetry the last pump cover and the lower pump cover of both sides about the pump body, wherein:
the pump body is of an integrally formed structure, a water inlet cavity with an opening at the front end is formed in the front of the pump body, the opening at the front end of the water inlet cavity is connected with a water inlet pipeline, and the foremost end of the water inlet pipeline is a water inlet; the rear part of the pump body is provided with a water outlet cavity with an opening at the rear end, the opening at the rear end of the water outlet cavity is connected with a water outlet pipeline, and the rearmost end of the water outlet pipeline is provided with a water outlet;
the left side and the right side of the water inlet cavity are respectively provided with a first group of water suction holes and a second group of water suction holes, the first group of water suction holes and the second group of water suction holes respectively comprise two water suction hole units which are symmetrically arranged on the upper side and the lower side of the water inlet cavity and are communicated with the water inlet cavity, and a water suction one-way valve is arranged in each water suction hole unit;
the left side and the right side of the water outlet cavity are respectively provided with a first group of drain holes and a second group of drain holes, the first group of drain holes and the second group of drain holes respectively comprise two drain hole units symmetrically arranged on the upper side and the lower side of the water outlet cavity, each drain hole unit is communicated with the water outlet cavity through a high-pressure water outlet, and a drain one-way valve is arranged in each drain hole unit;
a first plunger hole is formed between the first group of water suction holes and the first group of water drainage holes, a second plunger hole is formed between the second group of water suction holes and the second group of water drainage holes, and the first plunger hole and the second plunger hole are both arranged in the vertical direction and penetrate through the upper surface and the lower surface of the pump body;
the first plunger piston and the second plunger piston are respectively arranged in the first plunger piston hole and the second plunger piston hole in the vertical direction, and are respectively driven by the first motor, the second motor and respective eccentric mechanisms to reciprocate up and down;
two groups of water suction cavities, working cavities and drainage cavities are formed in the upper pump cover and the lower pump cover respectively, and each group of water suction cavities, the working cavities and the drainage cavities are communicated through a connecting channel; the positions of the water suction cavity, the working cavity and the water discharge cavity are respectively opposite to the positions of the water suction hole unit, the first plunger piston hole/second plunger piston hole and the water discharge hole unit.
Furthermore, the upper end and the lower end of the first plunger/the second plunger are respectively sleeved with a sealing ring, a guide pressure pad and a water seal, the sealing ring is positioned between the first plunger/the second plunger and the first plunger hole/the second plunger hole, the guide pressure pad is positioned on the outer side of the sealing ring, one part of the guide pressure pad is pressed on the periphery of the sealing ring, the other part of the guide pressure pad is sleeved on the first plunger/the second plunger, and the water seal is positioned on the outer side of the guide pressure pad.
Furthermore, sealing gaskets are respectively arranged between the pump body and the upper pump cover and between the pump body and the lower pump cover.
Furthermore, the water absorption one-way valve comprises a water absorption one-way valve core and a water absorption one-way valve spring, a water absorption spring support column is arranged in the upper pump cover/the lower pump cover, one end of the water absorption one-way valve spring is connected with the water absorption spring support column, the other end of the water absorption one-way valve spring is connected with the water absorption one-way valve core, and the water absorption one-way valve core is tightly pressed on the pump body at the water absorption hole unit under the action of the water absorption one-way valve spring to realize the one-way sealing of the water absorption hole unit and the water absorption cavity;
the drainage check valve comprises a drainage check valve core and a drainage check valve spring, a drainage spring support is arranged in the drainage hole unit, one end of the drainage check valve spring is connected with the drainage spring support, the other end of the drainage check valve spring is connected with the drainage check valve core, and the drainage check valve core is tightly pressed on an upper pump cover/a lower pump cover at the drainage cavity under the action of the drainage check valve spring to realize one-way sealing of the drainage hole unit and the drainage cavity;
the valve core of the water absorption one-way valve and the valve core of the water discharge one-way valve are made of elastic materials.
Furthermore, the side wall of the upper pump cover/the lower pump cover positioned on one side of the water suction cavity is provided with a fabrication hole communicated with the connecting channel, and the fabrication hole is blocked by a blocking structure after the pump body of the miniature duplex plunger pump is assembled.
Furthermore, the high-pressure water outlet is formed in the side wall of the inner side of the drain hole unit.
Furthermore, the upper pump cover and the lower pump cover are respectively of an integrated structure, and two groups of water suction cavities, working cavities and drainage cavities are formed in the upper pump cover and the lower pump cover of the integrated structure;
or the upper pump cover and the lower pump cover respectively comprise two pump cover units which are separated, and a group of water suction cavity, a working cavity and a water drainage cavity are formed in each pump cover unit.
Furthermore, the lower sides of the first plunger and the second plunger are provided with notches used for being matched with the eccentric mechanism.
Furthermore, the left side and the right side of the pump body are respectively provided with a first motor connecting hole and a second motor connecting hole, and the first motor connecting hole and the second motor connecting hole are arranged in the left-right direction and are respectively communicated with the first plunger hole and the second plunger hole.
The utility model has the following beneficial effects:
according to the utility model, two sets of plunger pump structures are arranged in the pump body of the miniature duplex plunger pump, and compared with a single plunger pump, double flow and pressure are realized. The pump body is of an integrally formed structure, and the structure and the position of the water inlet pipeline, the water inlet cavity, the first group of water suction holes, the first group of drain holes, the second group of water suction holes, the first plunger hole, the second plunger hole, the first plunger, the second plunger, the water outlet cavity, the water outlet pipeline and the water suction cavity in the upper pump cover/lower pump cover are arranged, so that the water inlet pipeline and the water outlet pipeline on one pump body are shared by two sets of plunger pump structures in the miniature duplex plunger pump body, the whole volume of the miniature duplex plunger pump body is small, the structure is compact, the use is convenient, and the manufacturing cost is low.
The utility model can independently control any motor connected with the pump body of the miniature duplex plunger pump to work, and can also simultaneously control two motors to work simultaneously, is respectively suitable for small-flow occasions and large-flow occasions, is convenient for pressure and flow regulation, does not need to unload redundant power when in small-pressure and small-flow operation, and has good economical efficiency. And the specification of a single motor is small, when two motors work simultaneously, the current of the single motor is approximately equal to the current of the motor when the motor works, and the service life of the motor is long.
Drawings
FIG. 1 is a perspective view of a micro dual plunger pump including a pump body of the micro dual plunger pump of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a sectional view taken along line A-A of FIG. 2 (with the first and second motors omitted);
FIG. 4 is a sectional view taken along line B-B of FIG. 2 (with the first and second motors omitted);
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 2 (with the first and second motors omitted);
FIG. 6 is a schematic view of a drive gear set;
FIG. 7 is a cross-sectional view taken along line D-D of FIG. 2 (with the first and second motors omitted);
FIG. 8 is a perspective view of the pump body;
FIG. 9 is a horizontal cross-sectional view of the pump body;
FIG. 10 is a perspective view of a pump cover unit;
fig. 11 is a sectional view of the pump cover unit.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
In order to facilitate description of the structure of the miniature duplex plunger pump body, the definition of the upper, lower, left, right, front, rear and other directions in the utility model refers to the marks of the upper, lower, left, right, front and rear directions in the attached drawing 1, and the upper, lower, left, right, front and rear directions in other attached drawings are based on the directions marked in the attached drawing 1.
As shown in fig. 1 to 11, the pump body of the micro duplex plunger pump comprises a pump body 1, and an upper pump cover 27 and a lower pump cover 28 which are symmetrically arranged on the upper side and the lower side of the pump body, wherein:
the pump body 1 is a duplex pump body, the pump body is of an integrally formed structure, the front part of the pump body 1 is provided with a water inlet cavity 4 with an opening at the front end, and the opening at the front end of the water inlet cavity 4 is connected with a water inlet pipeline 5. The foremost end of the water inlet pipeline 5 is provided with a water inlet 6, and the water inlet 6 is used for being connected with an external water inlet pipeline. In one example, the outer surface of the water inlet is provided with a connection structure such as a screw thread connected with an external water inlet pipe.
The rear part of the pump body 1 is provided with a water outlet cavity 7 with an opening at the rear end, and the opening at the rear end of the water outlet cavity 7 is connected with a water outlet pipeline 8. The water outlet 9 is arranged at the rearmost end of the water outlet pipeline 8, and the water outlet 9 is used for being connected with an external water outlet pipeline. In one example, the outer surface of the water outlet is provided with a connection structure such as a screw thread connected with an external water outlet pipe.
The left side and the right side of the water inlet cavity 4 are respectively provided with a first group of water suction holes 10 and a second group of water suction holes 11, the first group of water suction holes 10 and the second group of water suction holes 11 respectively comprise two water suction hole units 10 ', 10 ', 11 ' which are symmetrically arranged on the upper side and the lower side of the water inlet cavity 4 and communicated with the water inlet cavity 4, and a water suction one-way valve 12 is arranged in each water suction hole unit.
The left side and the right side of the water outlet cavity 7 are respectively provided with a first group of drain holes 13 and a second group of drain holes 14, the first group of drain holes 13 and the second group of drain holes 14 respectively comprise two drain hole units 13 ', 13 ', 14 ' which are symmetrically arranged on the upper side and the lower side of the water outlet cavity 7, each drain hole unit is communicated with the water outlet cavity 7 through a high-pressure water outlet 15, and a drain check valve 16 is arranged in each drain hole unit.
A first plunger hole 17 is formed between the first group of water suction holes 10 and the first group of drain holes 13, a second plunger hole 18 is formed between the second group of water suction holes 11 and the second group of drain holes 14, and the first plunger hole 17 and the second plunger hole 18 are arranged in the vertical direction and penetrate through the upper surface and the lower surface of the pump body 1.
The first plunger hole 17 and the second plunger hole 18 are provided therein with a first plunger 19 and a second plunger 20 in the up-down direction, respectively, and the first plunger 17 and the second plunger 18 are adapted to reciprocate up and down by the first motor 2 and the second motor 3, respectively, and the respective eccentric mechanisms 21, 22. The present invention is not limited to the specific structure of the eccentric mechanisms 21, 22 as long as the first plunger 17 and the second plunger 18 can reciprocate up and down.
Two groups of water suction cavities 23, working cavities 24 and water drainage cavities 25 are formed in the upper pump cover 27 and the lower pump cover 28, and each group of water suction cavities 23, working cavities 24 and water drainage cavities 25 are communicated through a connecting channel 26.
The suction chamber 23, the working chamber 24 and the drain chamber 25 are located outside the suction hole unit 10 ', 10 ", 11', 11", the first plunger hole 17/the second plunger hole 18 and the drain hole unit 13 ', 13 ", 14', 14", respectively, and the suction chamber 23, the working chamber 24 and the drain chamber 25 are located opposite to the suction hole unit 10 ', 10 ", 11', 11", the first plunger hole 17/the second plunger hole 18 and the drain hole unit 13 ', 13 ", 14', 14", respectively.
The pump body of the miniature duplex plunger pump is combined with the first motor 2 and the second motor 3 for use, and the miniature duplex plunger pump is obtained by assembly. When assembled, the first motor 2 and the second motor 3 are connected to the first plunger 17 and the second plunger 18, respectively, via respective eccentric mechanisms 21, 22.
When the assembled miniature duplex plunger pump works, the rotation of the first motor 2 and the second motor 3 drives the first plunger 17 and the second plunger 18 to reciprocate up and down through the respective eccentric mechanisms 21 and 22. The working chambers 24 on the upper pump cover 27 and the lower pump cover 28 are aligned with the first plunger hole 17/the second plunger hole 18. The first plunger 17 and the second plunger 18 reciprocate back and forth so that the volume of the working chamber 24 alternately increases and decreases.
When the volume of the working chamber 24 increases, the pressure in the working chamber 24 decreases, and the low pressure is transmitted to the suction check valve 12 in the suction hole unit 10 ', 10 ", 11', 11" through the connection passage 26 and the suction chamber 23, so that the suction check valve 12 is opened; at the same time, the low pressure is transferred to the drain check valve 16 in the drain hole unit 13 ', 13 ", 14', 14" through the connection passage 26 and the drain chamber 25, so that the drain check valve 16 is closed.
After the water-absorbing one-way valve 12 is opened, the liquid in the water inlet cavity 4 enters the working cavity 24 through the water-absorbing hole units 10 ', 10 ', 11 ', the water-absorbing cavity 23 and the connecting channel 26 under the action of low pressure, and the water-absorbing action is finished. Meanwhile, external liquid enters the water inlet cavity 4 through the external water inlet pipeline, the water inlet 6 and the water inlet pipeline 5.
When the volume of the working chamber 24 is reduced, the pressure in the working chamber 24 is increased, and the high pressure is transmitted to the water suction check valves 12 in the water suction hole units 10 ', 10 ", 11', 11" through the connecting channel 26 and the water suction chamber 23, so that the water suction check valves 12 are closed; at the same time, the high pressure is transferred to the drain check valve 16 in the drain hole unit 13 ', 13 ", 14', 14" through the connection passage 26 and the drain chamber 25, so that the drain check valve 16 is opened.
After the drainage check valve 16 is opened, the liquid in the working chamber 24 enters the water outlet chamber 7 through the connecting channel 26, the drainage chamber 25, the drainage hole units 13 ', 13 ", 14', 14" and the high-pressure water outlet 15 under the action of high pressure, and enters an external water outlet pipeline through the water outlet pipeline 8 and the water outlet 9, so that the water outlet action is completed.
According to the utility model, two sets of plunger pump structures are arranged in the pump body of the miniature duplex plunger pump, and compared with a single plunger pump, double flow and pressure are realized. The pump body is of an integrally formed structure, and the structure and the position of the water inlet pipeline, the water inlet cavity, the first group of water suction holes, the first group of drain holes, the second group of water suction holes, the first plunger hole, the second plunger hole, the first plunger, the second plunger, the water outlet cavity, the water outlet pipeline and the water suction cavity in the upper pump cover/lower pump cover are arranged, so that the water inlet pipeline and the water outlet pipeline on one pump body are shared by two sets of plunger pump structures in the miniature duplex plunger pump body, the whole volume of the miniature duplex plunger pump body is small, the structure is compact, the use is convenient, and the manufacturing cost is low.
The utility model can independently control any motor connected with the pump body of the miniature duplex plunger pump to work, and can also simultaneously control two motors to work simultaneously, is respectively suitable for small-flow occasions and large-flow occasions, is convenient for pressure and flow regulation, does not need to unload redundant power when in small-pressure and small-flow operation, and has good economical efficiency. And the specification of a single motor is small, when two motors work simultaneously, the current of the single motor is approximately equal to the current of the motor when the motor works, and the service life of the motor is long.
In the utility model, notches 29 matched with the eccentric mechanisms 21 and 22 are formed on the outer sides of the first plunger 19 and the second plunger 20.
In one example of the eccentric mechanisms 21, 22, each eccentric mechanism 21, 22 includes an eccentric 30 and an eccentric bearing 31, and the output shafts 32 of the first and second motors 2, 3 are engaged with the notches 29 of the first and second plungers 19, 20 through the respective eccentric 30 and eccentric bearing 31, respectively, to drive the first and second plungers 19, 20 to reciprocate up and down.
In order to realize the matching of the first plunger 19 and the second plunger 20 with the first motor 2 and the second motor 3, the left side and the right side of the pump body 1 are respectively provided with a first motor connecting hole 33 and a second motor connecting hole 34, the first motor connecting hole 33 and the second motor connecting hole 34 are both arranged in the left-right direction and are respectively communicated with the first plunger hole 17 and the second plunger hole 18, and the eccentric mechanisms 21 and 22 of the first motor 2 and the second motor 3 are respectively positioned in the first motor connecting hole 33 and the second motor connecting hole 34.
The output shafts 32 of the first motor 2 and the second motor 3 are respectively connected with respective transmission gear sets 35, the transmission gear sets 35 are used for transmission and speed reduction, the transmission gear sets 35 are located in a reduction gearbox 50, and the reduction gearbox 50 is formed by splicing an inner gear box shell 51 and an outer gear box shell 52.
The transmission gear set 35 includes a driving gear 36 connected to the output shafts 32 of the first and second motors 2 and 3, a double gear set 37 connected to the driving gear 36, and a driven gear 38 connected to the double gear set 37, and the driven gear 38 is connected to the eccentric wheel 30.
In order to prevent liquid in a working cavity from entering a reduction gearbox and a motor through a gap between the first plunger/the second plunger and a pump body/an upper pump cover/a lower pump cover, the first plunger 19/the second plunger 20 and the lower end of the first plunger/the second plunger 20 are sleeved with a sealing ring 39, a guide pressure pad 40 and a water seal 41, the sealing ring 39, the guide pressure pad 40 and the water seal 41 are restrained and fixed by the pump body, the upper pump cover and the lower pump cover, and the first plunger 19/the second plunger 20 slides relative to the sealing ring 39, the guide pressure pad 40 and the water seal 41 during the back-and-forth reciprocating motion, so that the liquid is sealed.
Specifically, the gasket 39 is located between the first/ second plungers 19, 20 and the first plunger bore 17
Between the second plunger hole 18, a guide pressure pad 40 is positioned at the outer side of the sealing ring 39, one part of the guide pressure pad 40 is pressed on the periphery of the sealing ring 39, the other part of the guide pressure pad is sleeved on the first plunger 19/the second plunger 20, the guide pressure pad 40 is positioned at the joint of the pump body 1 and the upper pump cover/the lower pump cover, a water seal 41 is positioned at the outer side of the guide pressure pad 40, and the water seal 41 is positioned in the upper pump cover/the lower pump cover.
The first plunger 19/the second plunger 20 slide-rubs against the packing 39, the guide pressure pad 40 and the water seal 41 during the back-and-forth reciprocation, which easily wears the outer surface of the first plunger 19/the second plunger 20 and causes scratches. After the first plunger 19/the second plunger 20 is scratched, the sealing with the sealing ring 39, the guide pressure pad 40 and the water seal 41 cannot be ensured, the service life of the first plunger 19/the second plunger 20 is shortened, and the sealing effect is reduced.
In order to prolong the service life and improve the sealing effect of the first plunger 19/the second plunger 20, the utility model arranges a wear-resistant ceramic layer on the outer surface of the friction position of the first plunger 19/the second plunger 20 with the sealing ring 39, the guide pressure pad 40 and the water seal 41.
Sealing gaskets 42 are respectively arranged between the pump body 1 and the upper pump cover 27 and the lower pump cover 28, so that waterproof sealing between the pump body 1 and the upper pump cover 27 and the lower pump cover 28 is realized.
The check valve in the prior art generally comprises a valve seat, a valve core and a spring, wherein the valve core is pressed on the valve seat through the spring to realize sealing in one direction, and when the pressure of liquid is greater than the pressure of the spring, the valve seat and the valve core are opened to realize conduction in the other direction.
However, the check valve in the prior art has complex structure, more parts and inconvenient assembly, the valve seat and the valve core are hard parts, the pressure sealing of the spring is relied on, the spring with larger elasticity is needed, and the processing precision of the contact surface of the valve seat and the valve core is required.
The water absorption one-way valve 12 comprises a water absorption one-way valve core 43 and a water absorption one-way valve spring 44, a water absorption spring support 45 is arranged in the upper pump cover 27/the lower pump cover 28, one end of the water absorption one-way valve spring 44 is connected with the water absorption spring support 45, the other end of the water absorption one-way valve spring 44 is connected with the water absorption one-way valve core 42, the water absorption one-way valve core 43 is tightly pressed on the pump body 1 at the positions of the water absorption hole units 10 ', 10', 11 'under the action of the water absorption one-way valve spring 44, one-way sealing of the water absorption hole units 10', 10 ', 11' and the water absorption cavity 23 is realized, and the water absorption one-way valve core 43 is made of an elastic material.
The valve core 43 of the water absorption one-way valve is made of elastic materials, a valve seat is omitted, the valve core 43 of the water absorption one-way valve is directly matched with the pump body 1, and one-way sealing is realized under the pressure of the spring 44 of the water absorption one-way valve. The valve seat component is omitted, the number of components is small, and the assembly is simple. The valve core 43 of the water absorption one-way valve is made of elastic materials, the sealing with the pump body is convenient, the requirement on the elasticity of the spring is not high, and the requirement on the processing precision is also low.
Similarly, the drain check valve 16 includes a drain check valve core 46 and a drain check valve spring 47, a drain spring support 48 is disposed in the drain hole units 13 ', 13 ", 14', 14", one end of the drain check valve spring 47 is connected to the drain spring support 48, the other end is connected to the drain check valve core 46, the drain check valve core 46 is pressed against the upper pump cover 27/the lower pump cover 28 at the drain cavity 25 by the drain check valve spring 47, so as to realize one-way sealing of the drain hole units 13 ', 13 ", 14', 14" and the drain cavity 25, and the drain check valve core 46 is made of an elastic material.
The connecting channel 26 for communicating the water suction cavity 23, the working cavity 24 and the drainage cavity 25 is inconvenient to process, in order to realize the convenient processing of the channel communication 26, the side wall of the upper pump cover 27/the lower pump cover 28 positioned on one side of the water suction cavity 23 is provided with a fabrication hole 49 communicated with the connecting channel 26, and the fabrication hole 49 is blocked by a blocking structure after the pump body of the micro duplex plunger pump is assembled, thereby preventing water leakage.
The aforementioned high-pressure water outlets 15 are opened on the side walls inside the drain hole units 13 ', 13 ", 14', 14".
In the utility model, the upper pump cover 27 and the lower pump cover 28 can be respectively of an integrated structure, and two groups of water suction cavities 23, working cavities 24 and drainage cavities 25 are respectively arranged in the upper pump cover 27 and the lower pump cover 28 of the integrated structure. The upper pump cover 27 and the lower pump cover 28 which are integrally structured reduce the number of parts, and are convenient to assemble.
Or, the upper pump cover 27 and the lower pump cover 28 respectively include two pump cover units 27 ', 27 ", 28', 28" which are separated, and a group of water suction cavity 23, working cavity 24 and water drainage cavity 25 are respectively arranged in each pump cover unit 27 ', 27 ", 28', 28".
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (9)
1. The utility model provides a miniature pair plunger pump body which characterized in that sets up including pump body and symmetry the last pump cover and the lower pump cover of both sides about the pump body, wherein:
the pump body is of an integrally formed structure, a water inlet cavity with an opening at the front end is formed in the front of the pump body, the opening at the front end of the water inlet cavity is connected with a water inlet pipeline, and the foremost end of the water inlet pipeline is a water inlet; the rear part of the pump body is provided with a water outlet cavity with an opening at the rear end, the opening at the rear end of the water outlet cavity is connected with a water outlet pipeline, and the rearmost end of the water outlet pipeline is provided with a water outlet;
the left side and the right side of the water inlet cavity are respectively provided with a first group of water suction holes and a second group of water suction holes, the first group of water suction holes and the second group of water suction holes respectively comprise two water suction hole units which are symmetrically arranged on the upper side and the lower side of the water inlet cavity and are communicated with the water inlet cavity, and a water suction one-way valve is arranged in each water suction hole unit;
the left side and the right side of the water outlet cavity are respectively provided with a first group of drain holes and a second group of drain holes, the first group of drain holes and the second group of drain holes respectively comprise two drain hole units symmetrically arranged on the upper side and the lower side of the water outlet cavity, each drain hole unit is communicated with the water outlet cavity through a high-pressure water outlet, and a drain one-way valve is arranged in each drain hole unit;
a first plunger hole is formed between the first group of water suction holes and the first group of water drainage holes, a second plunger hole is formed between the second group of water suction holes and the second group of water drainage holes, and the first plunger hole and the second plunger hole are both arranged in the vertical direction and penetrate through the upper surface and the lower surface of the pump body;
the first plunger piston and the second plunger piston are respectively arranged in the first plunger piston hole and the second plunger piston hole in the vertical direction, and are respectively driven by the first motor, the second motor and respective eccentric mechanisms to reciprocate up and down;
two groups of water suction cavities, working cavities and drainage cavities are formed in the upper pump cover and the lower pump cover respectively, and each group of water suction cavities, the working cavities and the drainage cavities are communicated through a connecting channel; the positions of the water suction cavity, the working cavity and the water discharge cavity are respectively opposite to the positions of the water suction hole unit, the first plunger piston hole/second plunger piston hole and the water discharge hole unit.
2. The miniature dual plunger pump body according to claim 1, wherein the first plunger/second plunger has sealing rings, a guiding pressure pad and a water seal sleeved on both upper and lower ends thereof, the sealing rings are located between the first plunger/second plunger and the first plunger hole/second plunger hole, the guiding pressure pad is located on the outer side of the sealing rings, a part of the guiding pressure pad presses on the periphery of the sealing rings, the other part of the guiding pressure pad is sleeved on the first plunger/second plunger, and the water seal is located on the outer side of the guiding pressure pad.
3. The pump body of claim 2, wherein sealing gaskets are respectively disposed between the pump body and the upper and lower pump covers.
4. The pump body of the micro duplex plunger pump according to claim 1, wherein the water suction check valve comprises a water suction check valve core and a water suction check valve spring, a water suction spring strut is arranged in the upper pump cover/the lower pump cover, one end of the water suction check valve spring is connected with the water suction spring strut, the other end of the water suction check valve spring is connected with the water suction check valve core, and the water suction check valve core is pressed on the pump body at the water suction hole unit under the action of the water suction check valve spring to realize one-way sealing of the water suction hole unit and the water suction cavity;
the drainage check valve comprises a drainage check valve core and a drainage check valve spring, a drainage spring support is arranged in the drainage hole unit, one end of the drainage check valve spring is connected with the drainage spring support, the other end of the drainage check valve spring is connected with the drainage check valve core, and the drainage check valve core is tightly pressed on an upper pump cover/a lower pump cover at the drainage cavity under the action of the drainage check valve spring to realize one-way sealing of the drainage hole unit and the drainage cavity;
the valve core of the water absorption one-way valve and the valve core of the water discharge one-way valve are made of elastic materials.
5. The pump body of claim 1, wherein a fabrication hole communicated with the connection channel is formed in a side wall of the upper pump cover/the lower pump cover on one side of the water suction cavity, and the fabrication hole is blocked by a blocking structure after the pump body of the micro duplex plunger pump is assembled.
6. The miniature dual plunger pump body as set forth in any one of claims 1-5, wherein said high pressure water outlet is provided on a side wall inside said drain hole unit.
7. The pump body of the micro duplex plunger pump according to claim 6, wherein the upper pump cover and the lower pump cover are respectively of an integrated structure, and two sets of water suction cavities, working cavities and drainage cavities are respectively arranged in the upper pump cover and the lower pump cover of the integrated structure;
or the upper pump cover and the lower pump cover respectively comprise two pump cover units which are separated, and a group of water suction cavity, a working cavity and a water drainage cavity are formed in each pump cover unit.
8. The miniature dual plunger pump body of claim 1, wherein the underside of each of said first and second plungers defines a notch for engaging said eccentric mechanism.
9. The miniature duplex plunger pump body according to claim 8, wherein the pump body is provided with a first motor connecting hole and a second motor connecting hole on the left and right sides thereof, respectively, and the first motor connecting hole and the second motor connecting hole are both arranged in the left and right direction and are communicated with the first plunger hole and the second plunger hole, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121545728.4U CN215633578U (en) | 2021-07-08 | 2021-07-08 | Miniature duplex plunger pump body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121545728.4U CN215633578U (en) | 2021-07-08 | 2021-07-08 | Miniature duplex plunger pump body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215633578U true CN215633578U (en) | 2022-01-25 |
Family
ID=79948719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121545728.4U Active CN215633578U (en) | 2021-07-08 | 2021-07-08 | Miniature duplex plunger pump body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215633578U (en) |
-
2021
- 2021-07-08 CN CN202121545728.4U patent/CN215633578U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113669318B (en) | Hydraulic device with hydraulic control check valve flow distribution radial plunger controlled by rotating shaft | |
| US9909714B2 (en) | Lubricator | |
| WO2021208286A1 (en) | Pulse water pump and water flosser | |
| CN113266610A (en) | Radial plunger hydraulic device adopting hydraulic control one-way valve for flow distribution and working method | |
| WO2024093343A1 (en) | Reciprocating power assembly and pump mechanism | |
| KR20130014748A (en) | Low pulsation high capacity diaphragm pump | |
| CN215633578U (en) | Miniature duplex plunger pump body | |
| CN217761233U (en) | Miniature duplex plunger pump | |
| CN216842093U (en) | Miniature duplex plunger pump body | |
| CN216842075U (en) | Miniature duplex plunger pump | |
| CN219847643U (en) | Gear injection pump and gear injection pump system | |
| CN101078398A (en) | Rolling extrusion soft variable-volume fluid mechanical device | |
| CN105736363A (en) | Positive displacement pump of eccentric wheel structure | |
| CN113137366B (en) | Oil buffer guide structure of variable plunger pump | |
| CN209100232U (en) | A kind of Gas-liquid pump | |
| CN210799253U (en) | Vertical distributed plunger pump assembly and cleaning machine | |
| CN220337054U (en) | Reversing transmission mechanism and high-pressure water pump | |
| KR100781391B1 (en) | Reciprocating pump utilized motor | |
| CN214887512U (en) | Hydraulic drive reciprocating type gas-liquid mixed transportation pump | |
| CN219672817U (en) | Diaphragm water pump | |
| CN215762065U (en) | Water pump and belt cleaning device | |
| CN215058051U (en) | Water pump with good sealing performance and large distance between water inlet and water outlet | |
| CN219953572U (en) | Plunger pump and liquid chromatograph | |
| CN212479607U (en) | Non-metal centrifugal pump for ultra-pure water delivery | |
| CN113944625B (en) | Novel high-pressure plunger pump fluid end structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |