CN210265111U

CN210265111U - Single rotor displacement pump

Info

Publication number: CN210265111U
Application number: CN201920739332.XU
Authority: CN
Inventors: 曹阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-04-07
Anticipated expiration: 2029-05-22

Abstract

The utility model discloses a single rotor positive displacement pump belongs to the fluid machinery field. The pump comprises a pump body and a pump cover, wherein a rotor is arranged in the pump body; the power assembly drives the rotor to rotate in a reciprocating manner; rotor blades are fixed on the rotor, stator blades are fixed on the inner wall of the pump body, and a sealed pump chamber is formed between each two adjacent rotor blades and each stator blade; the pump chamber is communicated with an inlet pipeline and an outlet pipeline; an inlet check valve is arranged in the inlet pipeline; an outlet one-way valve is arranged in the outlet pipeline. The utility model has only one rotor, no need of synchronous gear, simple structure of the whole machine, simple assembly and low manufacturing cost; the rotor has simple structure, easy processing and manufacturing, avoids the locking phenomenon of the rotor pump, has very simple maintenance, low cost and high practicability, and is a substitute product of the traditional cam rotor pump; the design of many pump rooms for the multiple different liquids that need mix can be pumped simultaneously to the positive displacement pump, and a pump can replace many pumps to use, and reduce cost has improved work efficiency.

Description

Single rotor displacement pump

Technical Field

The utility model relates to the field of fluid machinery, specifically a single rotor positive displacement pump is applicable to oil, chemical industry, food, beverage field for carry in, high viscosity fluid.

Background

A conventional cam rotor pump has a pair of drive gears in a bearing housing and a pair of intermeshing cams in a pump chamber. The pair of transmission gears drives the pair of cams to synchronously rotate to work, but in actual production operation, the situation that the cams in the pump cavity and the transmission gears in the bearing seat assemblies cannot synchronously rotate and are blocked frequently occurs, once a fault occurs, the maintenance is complex, the period is long, and the mechanical damage of the cams, the pump shaft and the transmission gears and even the whole pump is scrapped can be caused. In addition, the transmission structure of the pair of cam rotors and the pair of synchronous gears makes the structure of the whole machine complex. Meanwhile, the cam rotor profile is complex, the manufacturing process is also complex, and the manufacturing cost is also high. Therefore, the cam rotor pump has the disadvantages of complex overall structure, complex structure of cam parts, high manufacturing cost and high technical requirement on assembly and adjustment.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a single-rotor positive displacement pump.

The utility model discloses a following technical scheme realizes: a single-rotor displacement pump comprises a pump body and a pump cover, wherein the pump body and the pump cover form a sealed pump cavity, and a rotor is arranged in the pump body;

one side of the pump body is provided with a power assembly connected with the rotor, and the power assembly drives the rotor to rotate in a reciprocating manner;

rotor blades are fixed on the rotor, stator blades are fixed on the inner wall of the pump body, and a sealed pump chamber is formed between the adjacent rotor blades and the adjacent stator blades;

the pump chamber is communicated with an inlet pipeline and an outlet pipeline; an inlet check valve is arranged in the inlet pipeline; an outlet one-way valve is arranged in the outlet pipeline.

It further comprises the following steps: the pump body is cylindrical, and the pump cover is circular.

The inlet pipeline is connected to the pump body or the pump cover; the outlet pipeline is connected to the pump body or the pump cover.

The inlet pipeline and the outlet pipeline are close to one side of the pump body stator blade.

The inlet check valve controls the fluid in the inlet pipeline to flow to the pump chamber in a one-way mode; the outlet check valve controls the fluid in the outlet pipeline to flow out of the pump chamber in a single direction.

One of the rotor blades and one of the stator blades.

The number of the rotor blades is two, the number of the stator blades is two, and the rotor blades and the stator blades are alternately arranged.

The number of the rotor blades is equal to that of the stator blades, the rotor blades and the stator blades are alternately arranged, and the number of the rotor blades is more than three.

The utility model discloses well blade falls into a plurality of pump chambers to the pump chamber, and the reciprocating rotation of rotor makes the regular increase of each pump chamber and reduces. When the pump chamber increases, the pressure in the pump chamber is negative pressure, liquid enters the pump chamber through the inlet pipeline, when the pump chamber decreases, the pressure in the pump chamber increases, and the liquid in the pump chamber is discharged out of the pump chamber through the outlet pipeline. Fluid is thus continually introduced into the pump chamber through the inlet line and then conveyed out through the outlet line.

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

1, only one rotor is needed, synchronous gears are not needed, the whole machine is simple in structure, simple to assemble and low in manufacturing cost;

2, the rotor has simple structure, easy processing and manufacturing, avoids the locking phenomenon of the rotor pump, has very simple maintenance, low cost and high practicability, and is a substitute product of the traditional cam rotor pump;

and 3, due to the design of multiple pump chambers, the positive displacement pump can pump various different liquids needing to be mixed simultaneously, one pump can replace multiple pumps, and the working efficiency is improved.

Drawings

Fig. 1 is a front view of an embodiment of the present invention;

fig. 2 is a left side view of an embodiment of the present invention;

fig. 3 is a perspective view (first view) of an embodiment of the present invention;

fig. 4 is a perspective view (second view angle) of an embodiment of the present invention;

FIG. 5 is a front view (perspective) of an embodiment of the present invention;

FIG. 6 is a front view of the pump body of a dual vane, single rotor positive displacement pump;

FIG. 7 is a perspective view (first view) of the pump body of a double vane, single rotor positive displacement pump;

FIG. 8 is a perspective view (second perspective) of the pump body of a double vane, single rotor positive displacement pump;

FIG. 9 is a perspective view (first view) of the rotor of a double vane, single rotor positive displacement pump;

FIG. 10 is a schematic view of an alternative arrangement of inlet and outlet lines for a single rotor positive displacement pump of the double vane type.

Fig. 11 is a front view of the second embodiment of the present invention;

fig. 12 is a perspective view (first view) of a second embodiment of the present invention;

fig. 13 is a perspective view (second view angle) of the second embodiment of the present invention;

fig. 14 is a front view (perspective) of the second embodiment of the present invention;

FIG. 15 is a front view of the pump body of a single vane, single rotor positive displacement pump;

FIG. 16 is a perspective view (first view) of the pump body of a single vane, single rotor positive displacement pump;

FIG. 17 is a perspective view (first perspective) of the rotor of a single vane, single rotor positive displacement pump;

FIG. 18 is a view of an alternative arrangement of inlet and outlet lines for a single vane, single rotor positive displacement pump.

In the figure: 1, inlet pipelines I, 2, inlet pipelines II, 3, inlet pipelines III, 4, inlet pipelines IV, 5, inlet check valves I, 6, inlet check valves II, 7, inlet check valves III, 8, inlet check valves IV, 9, a pump body, 10, a pump cover, 11, outlet pipelines I, 12, outlet pipelines II, 13, outlet pipelines III, 14, outlet pipelines IV, 15, outlet check valves I, 16, outlet check valves II, 17, outlet check valves III, 18, outlet check valves IV, 19, outlet connectors, 20, inlet connectors, 21, power assemblies and 22 rotors.

Detailed Description

The following are two embodiments of the present invention, which will be further described with reference to the accompanying drawings.

Example one

Referring to fig. 1 to 5, a single-rotor positive displacement pump has a cylindrical pump body 9 and a circular pump cover 10, the pump body 9 and the pump cover 10 form a sealed pump cavity, and a rotor 22 is mounted in the pump body 9. One side of the pump body 9 is provided with a power assembly 21 connected with a rotor 22, and the power assembly 21 drives the rotor 22 to rotate in a reciprocating manner. The power assembly 21 may be a swing motor, or other conventional power device that can drive the rotor 22 to rotate back and forth.

Referring to fig. 6 to 9, two stator blades are fixed to the inner wall of the pump body 9 and are uniformly distributed in the circumferential direction, two rotor blades are fixed to the rotor 22 and are uniformly distributed in the circumferential direction, and the rotor blades and the stator blades are alternately arranged. And a sealed pump chamber is formed between the adjacent rotor blade and stator blade, and between the pump body 9 and the pump cover 10. In this embodiment, four pump chambers are formed, namely, a first pump chamber, a second pump chamber, a third pump chamber, and a fourth pump chamber.

The pump chamber III is communicated with an inlet pipeline I1 and an outlet pipeline I11; an inlet check valve I5 is installed in the inlet pipeline I1; an outlet check valve I15 is installed in the outlet pipeline I11. The pump chamber II is communicated with an inlet pipeline II 2 and an outlet pipeline II 12; an inlet check valve II 6 is arranged in the inlet pipeline II 2; an outlet check valve II 16 is arranged in the outlet pipeline II 12. The pump chamber is communicated with an inlet pipeline III 3 and an outlet pipeline III 13; an inlet check valve III 7 is arranged in the inlet pipeline III 3; an outlet check valve III 17 is arranged in the outlet pipeline III 13. An inlet pipeline IV 4 and an outlet pipeline IV 14 are communicated with the pump chamber IV; an inlet check valve IV 8 is arranged in the inlet pipeline IV 4; an outlet check valve IV 18 is arranged in the outlet pipeline IV 14. In this embodiment, the inlet pipeline is connected to the pump cover 10, the outlet pipeline is connected to the pump body 9, and the inlet pipeline and the outlet pipeline are both connected to one side of the stator blade close to the pump body 9. The inlet check valve controls the fluid in the inlet pipeline to flow to the pump chamber in a one-way mode and is cut off in the reverse direction; the outlet check valve controls the fluid in the outlet pipeline to flow out of the pump chamber in a one-way mode and is cut off in the reverse direction.

An inlet joint 20 is connected with an inlet pipeline I1, an inlet pipeline II 2, an inlet pipeline III 3 and an inlet pipeline IV 4 together, and an outlet joint 19 is connected with an outlet pipeline I11, an outlet pipeline II 12, an outlet pipeline III 13 and an outlet pipeline IV 14 together.

As another improvement, as shown in fig. 10, the inlet pipeline i 1, the inlet pipeline ii 2, the inlet pipeline iii 3, and the inlet pipeline iv 4 may also be connected to an independent inlet joint, so as to facilitate the suction of different materials.

The working principle of the double-blade type single-rotor positive displacement pump is as follows:

when the rotor (rotor blade) 22 rotates clockwise, the first and third volumes of the pump chamber are reduced, the internal pressure is increased, the inlet check valve III 7 connected with the first pump chamber is closed, and the outlet check valve III 17 is opened by high-pressure liquid; an inlet check valve I5 connected with a pump chamber III is closed, and an outlet check valve I15 is opened by high-pressure liquid; the high pressure fluid in the first and third pump chambers is discharged from the outlet connection 19 through outlet lines iii 13, i 11. The volumes of the second pump chamber and the fourth pump chamber are increased, the internal pressure is negative pressure, the inlet one-way valve II 6 connected with the second pump chamber is opened, and the outlet one-way valve II 16 is closed; an inlet one-way valve IV 8 connected with the pump chamber IV is opened, an outlet one-way valve IV 18 is closed, and liquid enters the pump chambers II and IV of the negative pressure area from an inlet joint 20 through inlet pipelines II 2 and IV 4;

when the rotor (rotor blade) 22 rotates anticlockwise, the first and third volumes of the pump chamber are increased, the internal pressure is negative pressure, the inlet check valve III 7 connected with the first pump chamber is opened, and the outlet check valve III 17 is closed; an inlet check valve I5 connected with a pump chamber III is opened, and an outlet check valve I15 is closed; fluid enters the first and third pumping chambers of the suction zone from the inlet fitting 20 through inlet lines iii 3, i 1. The volumes of the second pump chamber and the fourth pump chamber are reduced, the internal pressure is increased, the inlet one-way valve II 6 connected with the second pump chamber is closed, and the outlet one-way valve II 16 is opened by high-pressure liquid; an inlet check valve IV 8 connected with the pump chamber IV is closed, an outlet check valve IV 18 is opened by high-pressure liquid, and the high-pressure liquid in the pump chambers II and IV is discharged from an outlet joint 19 through outlet pipes II 12 and IV 14;

the circulation is repeated, and liquid is continuously sucked from the inlet connector 20 and discharged from the outlet connector 19.

Example two

The second embodiment is different from the first embodiment in that:

as shown in fig. 11 to 17, only one rotor blade and only one stator blade are provided.

1 stator blade arranged along the circumferential direction is fixed on the inner wall of the

pump body

9, and 1 rotor blade arranged along the circumferential direction is fixed on the rotor 22. The adjacent sides of the rotor blades and the stator blades, and a sealed pump chamber are formed between the pump body 9 and the pump cover 10. In this embodiment, two pump chambers, i.e., a first pump chamber and a second pump chamber, are formed.

The pump chamber is communicated with an inlet pipeline I5 and an outlet pipeline I11; an inlet check valve I1 is arranged in the inlet pipeline I5; an outlet check valve I15 is installed in the outlet pipeline I11. The pump chamber II is communicated with an inlet pipeline II 2 and an outlet pipeline II 12; an inlet check valve II 6 is arranged in the inlet pipeline II 2; an outlet check valve II 16 is arranged in the outlet pipeline II 12. In this embodiment, the inlet pipeline is connected to the pump cover 10, the outlet pipeline is connected to the pump body 9, and the inlet pipeline and the outlet pipeline are both connected to one side of the stator blade close to the pump body 9. The inlet check valve controls the fluid in the inlet pipeline to flow to the pump chamber in a one-way mode and is cut off in the reverse direction; the outlet check valve controls the fluid in the outlet pipeline to flow out of the pump chamber in a one-way mode and is cut off in the reverse direction.

The inlet pipeline I5 and the inlet pipeline II 2 are connected with an inlet joint 20 together, and the outlet pipeline I11 and the outlet pipeline II 12 are connected with an outlet joint 19 together.

As another modification, as shown in fig. 18, the inlet pipeline i 5 and the inlet pipeline ii 2 may be connected to an independent inlet joint respectively, so as to facilitate the suction of different materials.

The working principle of the single-blade type single-rotor displacement pump is as follows:

when the rotor (rotor blade) 22 rotates clockwise, the volume of the first pump chamber is reduced, the internal pressure is increased, the inlet check valve I1 connected with the first pump chamber is closed, the outlet check valve I15 is opened by high-pressure liquid, and the high-pressure liquid in the first pump chamber is discharged from the outlet joint 19 through the outlet pipeline I11; the volume of the second pump chamber is increased, the internal pressure is negative pressure, the inlet one-way valve II 6 connected with the second pump chamber is opened, the outlet one-way valve II 16 is closed, and liquid enters the second pump chamber of the negative pressure area from the inlet joint 20 through the inlet pipeline II 2;

when the rotor (rotor blade) 22 rotates anticlockwise, the volume of the second pump chamber is reduced, the internal pressure is increased, the inlet check valve II 6 connected with the second pump chamber is closed, the outlet check valve II 16 is opened by high-pressure liquid, and the high-pressure liquid in the second pump chamber is discharged from the outlet joint 19 through the outlet pipeline II 12; the volume of the pump chamber I is increased, the internal pressure is negative pressure, an inlet one-way valve I1 connected with the pump chamber I is opened, an outlet one-way valve I15 is closed, and liquid enters the pump chamber I of a negative pressure area from an inlet joint 20 through an inlet pipeline I5;

Claims

1. A single-rotor displacement pump comprises a pump body (9) and a pump cover (10), wherein the pump body (9) and the pump cover (10) form a sealed pump cavity, and a rotor (22) is installed in the pump body (9);

the method is characterized in that:

one side of the pump body (9) is provided with a power assembly (21) connected with the rotor (22), and the power assembly (21) drives the rotor (22) to rotate in a reciprocating manner;

rotor blades are fixed on the rotor (22), stator blades are fixed on the inner wall of the pump body (9), and a sealed pump chamber is formed between the adjacent rotor blades and the adjacent stator blades;

2. A single rotor positive displacement pump as claimed in claim 1, wherein: the pump body (9) is cylindrical, and the pump cover (10) is circular.

3. A single rotor positive displacement pump as claimed in claim 1, wherein: the inlet pipeline is connected to the pump body (9) or the pump cover (10); the outlet pipeline is connected to the pump body (9) or the pump cover (10).

4. A single rotor positive displacement pump as claimed in claim 1, wherein: the inlet pipeline and the outlet pipeline are close to one side of the stator blade of the pump body (9).

5. A single rotor positive displacement pump as claimed in claim 1, wherein: the inlet check valve controls the fluid in the inlet pipeline to flow to the pump chamber in a one-way mode; the outlet check valve controls the fluid in the outlet pipeline to flow out of the pump chamber in a single direction.

6. A single rotor positive displacement pump as claimed in claim 1, wherein: one of the rotor blades and one of the stator blades.

7. A single rotor positive displacement pump as claimed in claim 1, wherein: the number of the rotor blades is two, the number of the stator blades is two, and the rotor blades and the stator blades are alternately arranged.

8. A single rotor positive displacement pump as claimed in claim 1, wherein: the number of the rotor blades is equal to that of the stator blades, the rotor blades and the stator blades are alternately arranged, and the number of the rotor blades is more than three.