CN212318263U

CN212318263U - Hydraulic diaphragm reciprocating pump with integrated combined pump head

Info

Publication number: CN212318263U
Application number: CN202021526229.6U
Authority: CN
Inventors: 边伟; 王子雨; 崔梦迪
Original assignee: Dachao Pump Industry Mfg Co ltd
Current assignee: Dachao Pump Industry Mfg Co ltd
Priority date: 2019-11-07
Filing date: 2020-07-29
Publication date: 2021-01-08
Anticipated expiration: 2030-07-29
Also published as: CN111878370A

Abstract

The utility model relates to a hydraulic pressure diaphragm reciprocating pump technical field aims at providing a hydraulic pressure diaphragm reciprocating pump of whole combination pump head. The pump is provided with only one pump head, a plurality of diaphragm sheets are arranged between the aggregate and the pump head, and the number of the diaphragm sheets is consistent with that of the hydraulic oil channels; each hydraulic oil channel is respectively communicated with the hydraulic oil cavity of the corresponding diaphragm, and the medium cavity of the diaphragm is respectively communicated with the corresponding medium channel; the diaphragm hydraulic transmission systems are mutually independent and are not communicated with each other; all the medium channels, the liquid discharge one-way valve and the liquid inlet one-way valve are all arranged on one pump head. Because the fastener of the pump head is obviously reduced, the maintenance workload of the product is greatly reduced; each diaphragm can be concentrically arranged with the plunger, so that the overall dimensions of the pump head and the aggregate are correspondingly reduced, the weight is reduced, and the manufacturing cost and the maintenance workload are reduced; the leakage point and the thrust applied to the pump head can be reduced, and the pump head is favorable for improving the reliability and reducing the manufacturing cost.

Description

Hydraulic diaphragm reciprocating pump with integrated combined pump head

Technical Field

The utility model relates to a hydraulic pressure diaphragm reciprocating pump technical field specifically is a hydraulic pressure diaphragm reciprocating pump of whole combination pump head.

Background

The hydraulic diaphragm reciprocating pump is a novel reciprocating pump developed on the basis of the traditional plunger reciprocating pump, and a diaphragm is adopted to separate a medium from a plunger and a plunger sealing element, so that the aim of greatly prolonging the replacement period of the plunger and the plunger sealing element is fulfilled. The existing product adopts three or five split type circular pump head structures (as shown in figures 1-3) respectively according to the number of the plungers. The pump head structure has the following defects: 1. a large number of fasteners need to be configured, for example, 60 sets of left and right fasteners are needed in total for a three-plunger pump, and the number of five-plunger pump is up to about 110 sets, so that the overhaul workload is large; 2. the transverse size of the plurality of pump heads which are arranged in parallel is larger, and the transverse size exceeds the power end of the pump, so that the appearance installation size is obviously larger; 3. because the pump heads have larger diameters, the center distance between the adjacent pump heads exceeds the center distance between the adjacent plungers, so that part of the pump heads cannot be concentric with the plungers and can only extend towards two sides, and the structure complexity and the processing difficulty of the aggregate hydraulic oil duct are increased; 4. the cross section area of the circular diaphragm is larger, so that the thrust of the pump head is increased, the reliability of the pump is influenced, and the manufacturing cost of the pump head is increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is, overcome not enough among the prior art, provide the hydraulic pressure diaphragm reciprocating pump of a whole combination pump head.

For solving above technical insufficiency, the utility model discloses a solution is:

the hydraulic diaphragm reciprocating pump comprises a power end, an aggregate and a pump head which are sequentially connected, wherein a plurality of hydraulic oil channels are arranged in the power end and the aggregate; a diaphragm is arranged between the aggregate and the pump head, and a hydraulic oil cavity and a medium cavity are respectively arranged on two sides of the diaphragm; a medium channel is arranged on the pump head, and two ends of the medium channel are connected with a liquid discharge one-way valve and a liquid inlet one-way valve; the number of the pump heads is only one, a plurality of diaphragm sheets are arranged between the aggregate and the pump heads, and the number of the diaphragm sheets is consistent with that of the hydraulic oil channels; each hydraulic oil channel is respectively communicated with the hydraulic oil cavity of the corresponding diaphragm, and the medium cavity of the diaphragm is respectively communicated with the corresponding medium channel; the diaphragm hydraulic transmission systems are mutually independent and are not communicated with each other; all the medium channels, the liquid discharge one-way valve and the liquid inlet one-way valve are all arranged on one pump head.

As an improvement, the pump head is sized to fit the manifold and is secured to the manifold by fasteners.

As an improvement, the medium channel comprises a liquid inlet channel and a liquid outlet channel and is an internal channel arranged in the pump head; the liquid discharge one-way valve and the liquid inlet one-way valve are both installed inside the pump head, the liquid discharge one-way valve is located above the liquid discharge channel, and the liquid inlet one-way valve is located below the liquid inlet channel.

As a refinement, the diaphragm is oblong with a horizontal radial dimension smaller than a vertical radial dimension.

As a modification, the number of the diaphragm sheets is 3 or 5, and the diaphragm sheets are arranged in parallel between the pump head and the aggregate.

As an improvement, the aggregate is secured to the power end by a fastener.

Compared with the prior art, the beneficial effects of the utility model are that:

1. because the fastener of the pump head is obviously reduced, the maintenance workload can be greatly reduced;

2. due to the fact that the transverse size of the long circular diaphragm is reduced, the size of the installation center between the diaphragms is reduced, each diaphragm can be concentrically installed with the plunger, and the complex structure and the machining difficulty of turning of the existing product aggregate oil duct are avoided;

3. because the transverse size of the diaphragm is reduced, the overall dimensions of the integral combined pump head and the aggregate provided with a plurality of long circular diaphragm are correspondingly reduced, the weight is reduced, and the manufacturing cost and the maintenance workload are reduced;

4. the liquid inlet channel, the liquid discharge channel, the liquid inlet check valve and the liquid discharge check valve are all arranged in the same integral combined pump head, so that leakage points are reduced;

5. the reduction in the cross-sectional area of the diaphragm simultaneously reduces the thrust to which the pump head is subjected, which is advantageous in improving reliability and reducing manufacturing cost.

Drawings

FIG. 1 is a cross-sectional view of a front view of a prior art product;

FIG. 2 is a cross-sectional view of a top view of a prior art product;

FIG. 3 is a schematic right-view external view of a conventional product;

FIG. 4 is a cross-sectional view of the front view structure of the present invention;

FIG. 5 is a cross-sectional view of a top view of the present invention;

fig. 6 is a schematic view of the right side of the present invention.

Reference numbers in the figures: a plunger 1; a power end 2; a hydraulic oil passage 3; an aggregate 4; a hydraulic oil chamber 5; a diaphragm sheet 6; a medium chamber 7; a pump head 8; a liquid discharge check valve 9; a fastener 10; a liquid inlet check valve 11; a liquid inlet passage 12; a liquid discharge channel 13.

Detailed Description

The utility model discloses well whole combination pump head hydraulic pressure diaphragm reciprocating pump is shown as figure 4-6, include: plunger 1, power end 2, hydraulic oil passageway 3, aggregate 4, hydraulic pressure oil pocket 5, diaphragm 6, medium chamber 7, pump head 8, flowing back check valve 9, fastener 10, feed liquor check valve 11, feed liquor passageway 12 and flowing back passageway 13. Wherein,

the power end 2, the aggregate 4 and the pump head 8 are connected in sequence, and a plurality of hydraulic oil channels 3 are arranged in the power end 2 and the aggregate 4; a diaphragm 6 is arranged between the aggregate 4 and the pump head 8, and a hydraulic oil chamber 5 and a medium chamber 7 are respectively arranged on two sides of the diaphragm 6; a medium channel is arranged on the pump head 8, and both ends of the medium channel are connected with a liquid discharge one-way valve 9 and a liquid inlet one-way valve 11; different from the existing hydraulic diaphragm reciprocating pump, the utility model has only one pump head 8, a plurality of diaphragm sheets 6 are arranged between the aggregate 4 and the pump head 8, and the number of the diaphragm sheets is consistent with that of the hydraulic oil channels 3; the hydraulic oil channels 3 are respectively communicated with the hydraulic oil cavities 5 of the diaphragm 6, and the medium cavities 7 of the diaphragm 6 are respectively communicated with the corresponding medium channels; the diaphragm hydraulic transmission systems are mutually independent and are not communicated with each other; all the medium channels, the liquid discharge one-way valve 9 and the liquid inlet one-way valve 11 are all arranged on the same pump head 8. The medium passage includes a liquid inlet passage 12 and a liquid outlet passage 13, and is a passage provided inside the pump head 8. The liquid discharge one-way valve 11 and the liquid inlet one-way valve 9 are both arranged in the pump head 8, the liquid discharge one-way valve 9 is positioned above the medium channel, and the liquid inlet one-way valve 11 is positioned below the medium channel according to conventional arrangement. Compared with the existing product, the fastener 10 on the pump head 8 is obviously reduced, and the maintenance workload can be greatly reduced.

The pump head 8 has a size corresponding to the aggregate 4, and is fixed to the aggregate 4 by a fastener. As shown in fig. 4, the pump head 8 is fixed to the aggregate 4 by a fastener 10, and the medium passage, the liquid discharge check valve 9 and the liquid inlet check valve 11 are all provided in the same pump head, thereby reducing leakage points.

The diaphragm 6 is oblong with a horizontal radial dimension smaller than a vertical radial dimension. In actual use, the number of the diaphragm sheets 6 is optionally 3 or 5, and the diaphragm sheets are horizontally arranged in parallel in the pump head 8. Due to its reduced transverse dimensions, the overall dimensions of the pump head 8 incorporating the plurality of diaphragm sheets 6 are correspondingly reduced, resulting in a reduction in weight, and a concomitant reduction in manufacturing costs and maintenance efforts. Meanwhile, as the transverse size of the diaphragm is obviously reduced, the size of the installation center between the diaphragms 6 is reduced, so that each diaphragm can be concentrically installed with the plunger 1, and the complex structure and the processing difficulty of turning the oil channel of the existing product aggregate 4 are avoided. The reduced cross-sectional area of the diaphragm 6 simultaneously reduces the thrust to which the pump head 8 is subjected, which is advantageous for improved reliability and reduced manufacturing costs.

Instructions for use:

when the plunger 1 reciprocates, each diaphragm 6 is subjected to bidirectional flexural deformation under the action of hydraulic oil in the hydraulic oil chamber 5 and a medium in the medium chamber 7. When the plunger 1 moves forwards, hydraulic oil pushes the diaphragm 6 to make flexural deformation forwards, the volume of the medium cavity 7 is reduced, the liquid inlet one-way valve 11 is closed when the medium is pressed, the liquid discharge one-way valve 9 is opened, and the medium is discharged from the liquid discharge channel 13; when the plunger piston 1 moves backwards, the diaphragm 6 bends backwards and deforms, the volume of the medium cavity 7 expands to generate negative pressure, the liquid discharge one-way valve 9 is closed, the liquid inlet one-way valve 11 is opened, the medium enters the medium cavity 7 through the liquid inlet channel 12, the plunger piston 1 moves back and forth continuously, and the pump can convey the medium continuously.

The utility model discloses a change the diaphragm shape, adopt the whole pump head that makes up, all functional components all concentrate and set up in same pump head, reach the purpose that the maintenance is convenient, the leakage reduces, the appearance reduces, weight reduction, cost reduction and technology are simplified.

Of course, the present invention is not limited to the preferred embodiment, and any modifications, equivalent replacements and all the modifications directly derived or suggested from the disclosure should be included in the protection scope of the present invention.

Claims

1. A hydraulic diaphragm reciprocating pump with an integrally combined pump head comprises a power end, an aggregate and the pump head which are sequentially connected, wherein multiple paths of hydraulic oil channels are arranged in the power end and the aggregate; a diaphragm is arranged between the aggregate and the pump head, and a hydraulic oil cavity and a medium cavity are respectively arranged on two sides of the diaphragm; a medium channel is arranged on the pump head, and two ends of the medium channel are connected with a liquid discharge one-way valve and a liquid inlet one-way valve; the hydraulic pump is characterized in that only one pump head is provided, a plurality of diaphragm sheets are arranged between the aggregation body and the pump head, and the number of the diaphragm sheets is consistent with that of the hydraulic oil channels; each hydraulic oil channel is respectively communicated with the hydraulic oil cavity of the corresponding diaphragm, and the medium cavity of the diaphragm is respectively communicated with the corresponding medium channel; the diaphragm hydraulic transmission systems are mutually independent and are not communicated with each other; all the medium channels, the liquid discharge one-way valve and the liquid inlet one-way valve are all arranged on one pump head.

2. The hydraulic diaphragm reciprocating pump of claim 1 wherein the pump head is sized to fit over the manifold and is secured to the manifold by fasteners.

3. The hydraulic diaphragm reciprocating pump of claim 1, wherein the media path comprises a liquid inlet path and a liquid outlet path, which are internal paths provided in the pump head; the liquid discharge one-way valve and the liquid inlet one-way valve are both installed inside the pump head, the liquid discharge one-way valve is located above the liquid discharge channel, and the liquid inlet one-way valve is located below the liquid inlet channel.

4. The hydraulic diaphragm reciprocating pump of claim 1 wherein the diaphragm is oblong with a horizontal radial dimension that is smaller than a vertical radial dimension.

5. The hydraulic diaphragm reciprocating pump of claim 1, wherein the number of the diaphragm sheets is 3 or 5, and is arranged in parallel between the pump head and the aggregate.

6. The hydraulic diaphragm reciprocating pump of any one of claims 1 to 5 wherein the aggregate is secured to the power end by fasteners.