CN215805002U - Easily maintained hydraulic plunger pump device resistant to high inlet pressures - Google Patents

Abstract

The utility model relates to the technical field of water treatment equipment machinery manufacturing, in particular to a water pressure plunger pump device which is easy to maintain and can bear high inlet pressure, comprising: plunger pump, motor, pipeline and bell jar; the inside motor and the bell jar of being equipped with in proper order along the fore-and-aft direction of pipeline, the bell jar open end faces backwards, the bell jar front end is connected to the motor rear end, the front end of bell jar is equipped with the shaft hole that the output shaft of motor passed, the output shaft passes behind the shaft hole, the pump shaft of plunger pump is connected to the other end of output shaft, the pipeline front end is equipped with the pipeline entry, pipeline entry intercommunication pipeline inner chamber, be formed with the runner hole on the bell jar, the inside and the pipeline inner chamber of bell jar are communicate to the runner hole, be equipped with plunger pump entry and plunger pump export on the plunger pump, the inside of plunger pump entry front end intercommunication bell jar, and plunger pump entry rear end intercommunication plunger pump export. The plunger pump equipment can avoid the leakage of the medium in the plunger pump equipment and is convenient to install and maintain.

Description

Easily maintained hydraulic plunger pump device resistant to high inlet pressures

Technical Field

The utility model relates to the technical field of water treatment equipment mechanical manufacturing, in particular to a water pressure plunger pump device which is easy to maintain and can bear high inlet pressure.

Background

The hydraulic plunger pump uses the flowing water medium for self-lubricating, has high working pressure, high efficiency and low power consumption, and has wide application in the water treatment fields of seawater desalination, landfill leachate treatment, industrial wastewater zero discharge and the like. The hydraulic plunger pump is a positive displacement water pump and achieves the purpose of conveying a medium by means of volume change generated by axial reciprocating motion of a plunger abutting against the surface of a swash plate. The basic operating principle of this pump is also the same as that of a swash plate type plunger pump.

The shaft seal of the hydraulic plunger pump generally adopts light mechanical seal for the pump, and the general working pressure range is within 1 MPa. As is well known, mechanical seals are common key parts of pump shaft seals and are also vulnerable parts. When impurities appear in water, the mechanical seal is easy to wear, so that the leakage problem of a conveying medium is caused, and the pollution is caused to a working site. In some special application occasions, the inlet pressure of the pump body is higher and reaches 4MPa or even higher, and engineering technicians can select the medium-sized mechanical seal (the working pressure reaches more than 4 MPa) for the pump at the moment. This is inherently satisfactory for withstanding high inlet pressures, but in the event of a failure of the mechanical seal, high pressure media may be ejected, causing injury to personnel or other equipment. The damage may be even greater if the media is at a higher temperature or is particularly corrosive and hazardous. Further, if the inlet pressure reaches above 6MPa, the type selection of the mechanical seal becomes more difficult.

The reliability of the mechanical seal is further reduced when the inlet pressure is high, and the hazard from its failure is further exacerbated. In particular, finding a reliable mechanical seal can be extremely difficult when the inlet pressure is higher. In order to solve the above problems, the patent No. CN2019224021811 provides a hydraulic plunger pump capable of enduring high inlet pressure without sealing the shaft, and naturally without shaft sealing parts, i.e. mechanical sealing parts, but the hydraulic plunger pump is not convenient to seal the water inlet and outlet pipes inside the pipe, and the structure is complex and is difficult to disassemble and maintain.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the technical problems that in the prior art, the shaft seal of the plunger pump is easy to damage, the medium inlet bears small pressure, the plunger pump is sealed in the pipeline after the shaft seal, the water inlet and outlet pipelines are inconvenient to connect, and the structure is complex, and the disassembly and maintenance are difficult are solved. The utility model provides the hydraulic plunger pump equipment which is easy to maintain and can bear high inlet pressure, a shaft sealing element is not needed, the inlet pressure tolerance capability of the plunger pump and the reliability of the plunger pump equipment are obviously improved, and the hydraulic plunger pump equipment is convenient to install and maintain.

The technical scheme adopted by the utility model for solving the technical problems is as follows: an easy to maintain hydraulic ram pump apparatus that is tolerant of high inlet pressures, comprising: plunger pump, motor, pipeline and bell jar;

a motor and a bell-shaped cover are sequentially arranged in the pipeline along the front-back direction, the open end of the bell-shaped cover faces backwards, the rear end of the motor is connected with the front end of the bell-shaped cover, the front end of the bell-shaped cover is provided with a shaft hole through which an output shaft of the motor passes, the other end of the output shaft is connected with a pump shaft of the plunger pump after the output shaft passes through the shaft hole, and the open end of the bell-shaped cover is fixedly connected with the plunger pump;

the front end of the pipeline is provided with a pipeline inlet which is communicated with an inner cavity of the pipeline, a circulation hole is formed in the bell-shaped cover and is communicated with the inside of the bell-shaped cover and the inner cavity of the pipeline, the plunger pump is provided with a plunger pump inlet and a plunger pump outlet, the front end of the plunger pump inlet is communicated with the inside of the bell-shaped cover, and the rear end of the plunger pump inlet is communicated with the plunger pump outlet.

To facilitate installation, the bell housing includes: the novel pipeline joint comprises a first flange, a plurality of reinforcing ribs and a second flange, wherein the first flange and the second flange are coaxial and are arranged at intervals in the front-back direction, the plurality of reinforcing ribs are arranged between the first flange and the second flange, the first flange and the second flange are fixedly connected with the plurality of reinforcing ribs, the second flange extends outwards along the radial direction of the second flange from the outer contour formed by the plurality of reinforcing ribs, the front end face of the first flange is fixedly connected with the rear end face of a motor, the front end face of the second flange is abutted against the rear wall of the pipeline, the rear end face of the second flange is fixedly connected with a plunger pump, the plurality of reinforcing ribs are arranged at intervals, and circulation holes are formed between the adjacent reinforcing ribs.

Preferably, the plunger pump includes: the pump comprises a pump front end cover, a pump flow distribution plate, a pump revolving body, a pump swash plate and a pump rear cover, wherein the pump shell is tubular, the front end of the pump shell is fixedly connected with the pump front end cover, the rear end of the pump shell is fixedly connected with the pump rear cover, the pump flow distribution plate, the pump revolving body and the pump swash plate are arranged in the pump shell, the pump flow distribution plate is close to the pump front end cover and is fixedly connected with the pump front end cover, one end of the pump revolving body is connected with the pump flow distribution plate, the other end of the pump revolving body is connected with the pump swash plate, and the front end of the pump front end cover is connected with a second flange of the bell-shaped cover.

In order to facilitate installation, a third flange is arranged at the front end of the pump front end cover and along the periphery of the pump front end cover, and the third flange is fixedly connected with a second flange at the rear end of the bell-shaped cover through bolts.

In order to fix the position of the pump front end cover, the second flange is provided with an annular limiting boss along the inner peripheral wall, the front end of the pump front end cover abuts against the rear end face of the limiting boss, and an O-shaped sealing ring is arranged between the pump front end cover and the second flange.

In order to provide radial support and location for the motor in the pipeline is inside, the high entry pressure's of easy to maintain water pressure plunger pump equipment of tolerating still includes the supporting seat that is used for providing radial support and radial location's pipeline screw gland, the supporting seat sets up inside the pipeline, and set up at the motor front end and support and lean on the motor, pipeline screw gland cover is established the rear end of pipeline to rather than threaded connection, just pipeline screw gland supports in the footpath and supports the rear end face of the second flange of bell-shaped housing.

Preferably, the plunger pump inlet is arranged in the pump front end cover, the plunger pump inlet is connected with the pump valve plate, a plunger pump outlet is further arranged in the pump front end cover, the plunger pump outlet is of an L shape, one end of the plunger pump outlet is connected with the pump valve plate, and the other end of the plunger pump outlet is connected with an external pipeline. The plunger pump inlet is arranged in the pump front end cover and is directly communicated with the interior of the pipeline, the upper limit of pressure borne by the inlet of the plunger pump is equal to the pressure bearing capacity of the pipeline, the inlet pressure range of the working of the plunger pump is expanded, the inlet can be opened in a large range, a medium can better flow into the pump revolving body, and therefore the comprehensive performance of the plunger pump equipment is improved. The flow area that the pipeline connection form of need considering brought is avoided current plunger pump entry, and the too big circulation area that makes of entry is too big, and then makes the entry pressure intolerant, causes the damage of device.

Preferably, the bell housing first flange and the motor are secured by at least 4 bolts.

Optionally, the pump shaft of the plunger pump is connected with the output shaft of the motor through a coupling, so that the motor can drive the plunger pump to rotate synchronously.

The hydraulic plunger pump equipment which is easy to maintain and can bear high inlet pressure has the following specific effects:

1. after plunger pump and motor pass through the bell jar fixed, the plunger pump equipment of this application no longer need the sealing member for the axle, has obviously promoted plunger pump entry pressure endurance, has further promoted the reliability that plunger pump equipment used.

2. The plunger pump is arranged outside the pipeline, so that the plunger pump is convenient to disassemble and assemble, and can be maintained under the condition of not disassembling a pipeline shell.

3. The inlet of the plunger pump is arranged in the pipeline, so that the upper limit of pressure borne by the inlet of the plunger pump is equal to the pressure bearing capacity of the pipeline, the inlet pressure range of the plunger pump is expanded, and the comprehensive performance of the plunger pump equipment is improved.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a cross-sectional view of a front view of the high inlet pressure tolerant hydraulic ram pump apparatus of the present invention that is easy to maintain;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 1;

FIG. 4 is a cross-sectional view C-C of FIG. 1;

fig. 5 is a schematic view of the bell housing construction of the present invention.

Reference numerals:

1. plunger pump, 111, pump shaft, 2, motor, 21, output shaft, 3, shaft coupling, 4, pipeline, 41, pipeline entry, 5, bell jar, 51, first flange, 511, shaft hole, 52, strengthening rib, 521, circulation hole, 53, second flange, 531, open end, 6, pipeline screw gland, 7, pump front end housing, 71, plunger pump entry, 72, plunger pump outlet, 73, third flange, 8, pump valve plate, 9, pump gyration body, 10, pump housing, 11, pump sloping cam plate, 12, pump back cover, 13, supporting seat, 14, bolt.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1 to 5, which are the most preferred embodiments of the present invention, an easy-to-maintain hydraulic ram pump apparatus that is resistant to high inlet pressure, comprises: plunger pump 1, motor 2, pipe 4 and bell jar 5;

the motor 2 and the bell-shaped cover 5 are sequentially arranged in the pipeline 4 along the front-back direction, the open end 531 of the bell-shaped cover 5 faces backwards, the rear end of the motor 2 is connected with the front end of the bell-shaped cover 5, the front end of the bell-shaped cover 5 is provided with a shaft hole 511 through which an output shaft 21 of the motor 2 passes, after the output shaft 21 passes through the shaft hole 511, the other end of the output shaft 21 is connected with a pump shaft 111 of the plunger pump 1, and the pump shaft 111 of the plunger pump 1 is connected with the output shaft 21 of the motor 2 through a coupling 3. The open end 531 of the bell jar 5 is fixedly connected with the plunger pump 1;

the front end of the pipeline 4 is provided with a pipeline inlet 41, the pipeline inlet 41 is communicated with a pipeline inner cavity, the bell jar 5 is provided with a circulation hole 521, the circulation hole 521 is communicated with the inside of the bell jar 5 and the pipeline inner cavity, the plunger pump 1 is provided with a plunger pump inlet 71 and a plunger pump outlet 72, the front end of the plunger pump inlet 71 is communicated with the inside of the bell jar 5, and the rear end of the plunger pump inlet 71 is communicated with the plunger pump outlet 72. The conduit inlet 41 may have the mechanical structure required for the copy forest connection, or may have other structural configurations for connection to external conduits.

The bell jar 5 includes: first flange 51, a plurality of strengthening ribs 52 and second flange 53, first flange 51 and second flange 53 are coaxial and the front and back interval sets up, a plurality of strengthening ribs 52 are located between first flange 51 and second flange 53, first flange 51 and second flange 53 all with a plurality of strengthening ribs 52 fixed connection, second flange 53 outwards extends out in its radial direction and stretches out the outline that a plurality of strengthening ribs 52 formed, the preceding terminal surface of first flange 51 and the rear end fixed connection of motor 2, first flange 51 and the motor 2 of bell-shaped housing 5 are fixed through 4 bolts 14 at least. The front end face of the second flange 53 abuts against the rear wall of the pipeline 4, the rear end face of the second flange 53 is fixedly connected with the plunger pump 1, the reinforcing ribs 52 are arranged at intervals, and a circulation hole 521 is formed between every two adjacent reinforcing ribs 52.

The plunger pump 1 includes: the hydraulic plunger pump comprises a pump front end cover 7, a pump valve plate 8 and a pump revolving body 9 (the hydraulic plunger pump is a swash plate type plunger pump and has a relatively universal revolving body structure, so that the revolving body is not drawn in detail and is replaced by a drawing frame), a pump swash plate 11 and a pump rear cover 12, the pump shell 10 is tubular, the front end of the pump shell 10 is fixedly connected with the pump front end cover 7, the rear end of the pump shell 10 is fixedly connected with the pump rear cover 12, the pump valve plate 8, the pump revolving body 9 and the pump swash plate 11 are arranged in the pump shell 10, the pump valve plate 8 is close to the pump front end cover 7 and is fixedly connected with the pump front end cover 7, one end of the pump revolving body 9 is connected with the pump valve plate 8, the other end of the pump revolving body is connected with the pump swash plate 11, and the front end of the pump front end cover 7 is connected with a second flange 53 of the bell-shaped cover 5.

A third flange 73 is provided along the outer periphery of the front end of the pump front end cover 7, and the third flange 73 is fixedly connected to the second flange 53 at the rear end of the bell housing 5 by bolts 14.

The second flange 53 is provided with an annular limit boss along the inner peripheral wall thereof, the front end of the pump front end cover 7 abuts against the rear end face of the limit boss, and an O-shaped sealing ring is arranged between the pump front end cover 7 and the second flange 53.

The utility model provides an easy to maintain's water pressure plunger pump equipment of tolerating high inlet pressure still includes the pipeline screw gland 6 that is used for providing radial support's supporting seat 13 and radial positioning, and supporting seat 13 sets up inside pipeline 4, and sets up at the 2 front ends of motor and support by motor 2, and pipeline screw gland 6 cover is established at the rear end of pipeline 4 to rather than threaded connection, and pipeline screw gland 6 supports the rear end face that leans on second flange 53 of bell jar 5 in the footpath.

The plunger pump inlet 71 is arranged in the pump front end cover 7, the plunger pump inlet 71 is connected with the pump valve plate 8, the plunger pump outlet 72 is further arranged in the pump front end cover 7, the plunger pump outlet 72 is L-shaped, one end of the plunger pump outlet 72 is connected with the pump valve plate 8, and the other end of the plunger pump outlet 72 is connected with an external pipeline.

The utility model is realized by firstly fixing the bell-shaped cover 5 to the rear part of the submersible motor 2 by four bolts 14, inserting the motor 2 and the bell-shaped cover 5 into the pipeline 4 together, finally realizing the positioning in the axial direction by the inner end surface of the shell of the pipeline 4, and realizing the axial position fixation of the internal parts of the pipeline 4 by the support base 13 abutting against the front end of the motor 2 and the threaded gland of the pipeline 4 and being in threaded connection with the rear end of the pipeline 4. Next, the coupling 3 is fitted to the pump shaft 111 of the plunger pump 1, and then the other end of the coupling 3 is fitted to the output shaft 21 of the motor 2, and the front end surface of the plunger pump 1 is bolted to the second flange 53 of the bell jar 5.

In operation, media enters through the copy forest interface channel of the pipe inlet 41, passes through the gap between the motor 2 and the pipe 4, flows into the flow hole 521 of the bell housing 5 from the inner cavity of the pipe 4, enters the bell housing 5, and enters the low-pressure side of the pump swivel body 9 through the plunger pump inlet 71 on the pump front end cover 7 and the suction groove of the pump port plate 8. By the rotation of the pump swivel 9, the medium enters the high pressure side and from the discharge groove of the pump port plate 8 into the plunger pump outlet 72 of the pump front end cover 7, and finally flows out through the external pipe.

Since the pump front end cover 7 is completely sealed from the bell housing 5 inside the pipe 4, the pump shaft 111 of the plunger pump 1 no longer needs to be sealed with a seal to prevent external leakage. Meanwhile, the plunger pump inlet 71 is arranged in the pipeline 4, the pressure bearing capacity of the plunger pump inlet 71 is consistent with that of the pipeline 4, the leakage risk caused by overhigh pressure of the plunger pump inlet 71 is avoided, and the flowing medium can be prevented from leaking when the pump shaft 111 does not use a mechanical seal.

In summary, the motor 2 and the plunger pump 1 which can bear proper working pressure are fixedly connected in the pipeline 4 through the bell jar 5, and the plunger pump 1 is driven by the motor 2 to complete water pumping work. The motor 2 side in the pipeline 4 is the side of intaking, and rivers flow into pipeline 4 and are inhaled by water pressure plunger pump 1 behind the clearance of motor 2 and pipeline 4 inner chamber, again from the play water side outflow of plunger pump 1. Because the front end cover (including the pump shaft which needs to be arranged with the mechanical seal originally) of the plunger pump 1 and the bell-shaped cover 5 arranged in the pipeline 4 are completely sealed, the leakage problem is avoided, the original mechanical seal design is not needed any more, and the technical problem that the existing mechanical seal is easy to damage is further avoided. The upper limit of the pressure of the plunger pump inlet 71 is equal to the pressure bearing capacity of the pipeline 4, the corresponding joint is sealed by the static sealing element, the comprehensive performance of the plunger pump equipment is improved, the product is more reliable and safer, the plunger pump 1 is arranged outside the pipeline and is convenient to disassemble and assemble, and the plunger pump 1 can be maintained under the condition that the pipeline shell is not disassembled.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit 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. An easy to maintain hydraulic ram pump apparatus that is tolerant of high inlet pressures, comprising: the device comprises a plunger pump (1), a motor (2), a pipeline (4) and a bell-shaped cover (5);

a motor (2) and a bell-shaped cover (5) are sequentially arranged in the pipeline (4) along the front-rear direction, the open end (531) of the bell-shaped cover (5) faces backwards, the rear end of the motor (2) is connected with the front end of the bell-shaped cover (5), the front end of the bell-shaped cover (5) is provided with a shaft hole (511) through which an output shaft (21) of the motor (2) passes, after the output shaft (21) passes through the shaft hole (511), the other end of the output shaft (21) is connected with a pump shaft (111) of the plunger pump (1), and the open end (531) of the bell-shaped cover (5) is fixedly connected with the plunger pump (1);

the front end of the pipeline (4) is provided with a pipeline inlet (41), the pipeline inlet (41) is communicated with an inner cavity of the pipeline, a circulation hole (521) is formed in the bell-shaped cover (5), the circulation hole (521) is communicated with the inner part of the bell-shaped cover (5) and the inner cavity of the pipeline, a plunger pump inlet (71) and a plunger pump outlet (72) are arranged on the plunger pump (1), the front end of the plunger pump inlet (71) is communicated with the inner part of the bell-shaped cover (5), and the rear end of the plunger pump inlet (71) is communicated with the plunger pump outlet (72).

2. Easy-to-service high inlet pressure tolerant hydraulic ram pump apparatus as claimed in claim 1, wherein the bell housing (5) comprises: a first flange (51), a plurality of reinforcing ribs (52) and a second flange (53), the first flange (51) and the second flange (53) are coaxial and are arranged at intervals in the front-back direction, a plurality of reinforcing ribs (52) are arranged between the first flange (51) and the second flange (53), the first flange (51) and the second flange (53) are fixedly connected with a plurality of reinforcing ribs (52), the second flange (53) extends outwards along the radial direction thereof from the outer contour formed by a plurality of reinforcing ribs (52), the front end surface of the first flange (51) is fixedly connected with the rear end surface of the motor (2), the front end face of the second flange (53) abuts against the rear wall of the pipeline (4), the rear end face of the second flange (53) is fixedly connected with the plunger pump (1), a plurality of reinforcing ribs (52) are arranged at intervals, and circulation holes (521) are formed between the adjacent reinforcing ribs (52).

3. Easy-to-maintain high inlet pressure resistant hydraulic ram pump apparatus as claimed in claim 2, characterized in that the ram pump (1) comprises: pump front end housing (7), pump valve plate (8), pump swivel body (9), pump sloping cam plate (11) and pump back lid (12), pump casing (10) are the tubulose, the front end fixed connection of pump casing (10) pump front end housing (7), the rear end fixed connection of pump casing (10) lid (12) behind the pump, pump valve plate (8) pump swivel body (9) with pump sloping cam plate (11) set up in pump casing (10), pump valve plate (8) are close to pump front end housing (7), and with pump front end housing (7) fixed connection, pump swivel body (9) one end is connected pump valve plate (8), its other end is connected pump sloping cam plate (11), the front end of pump front end housing (7) is connected second flange (53) of bell-shaped cover (5).

4. A high inlet pressure tolerant hydraulic ram pump apparatus that is easy to service as claimed in claim 3, characterized in that the front end of the pump front end cover (7) is provided with a third flange (73) along its periphery, said third flange (73) being fixedly connected to the second flange (53) at the rear end of the bell housing (5) by means of bolts (14).

5. Easy-to-maintain high inlet pressure resistant hydraulic ram pump apparatus as claimed in claim 4, characterized in that the second flange (53) is provided with an annular stop boss along its inner peripheral wall, the front end of the pump front end cap (7) abuts against the rear end face of the stop boss, and an O-ring seal is provided between the pump front end cap (7) and the second flange (53).

6. The easy-to-maintain high inlet pressure tolerant hydraulic plunger pump device as claimed in claim 2, further comprising a support seat (13) for providing radial support and a radially positioned pipe screw gland (6), the support seat (13) being arranged inside the pipe (4) and being arranged at the front end of the motor (2) and abutting against the motor (2), the pipe screw gland (6) being fitted over the rear end of the pipe (4) and being in threaded connection therewith, and the pipe screw gland (6) abutting radially against the rear end face of the second flange (53) of the bell housing (5).

7. A high inlet pressure tolerant hydraulic ram pump apparatus that is easy to maintain as claimed in claim 3, wherein the ram pump inlet (71) is located in the pump front end cap (7), the ram pump inlet (71) is connected to the pump port plate (8), a ram pump outlet (72) is also located in the pump front end cap (7), the ram pump outlet (72) is L-shaped, one end of the ram pump outlet (72) is connected to the pump port plate (8), and the other end is connected to an external pipe.

8. Easy to maintain high inlet pressure resistant hydraulic ram pump apparatus according to claim 2, characterized in that the first flange (51) of the bell housing (5) and the motor (2) are fixed by at least 4 bolts (14).

9. Easy to maintain high inlet pressure resistant hydraulic ram pump apparatus according to claim 1, characterized in that the ram pump (1) pump shaft (111) is connected to the output shaft (21) of the motor (2) via a coupling (3).

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