Conveying device and conveying system with same

Abstract

The utility model provides a conveying device and a conveying system with the same. The conveying device is used for conveying liquid and comprises a shell provided with a mounting cavity, a liquid inlet hole and a liquid outlet hole; the stator is movably arranged in the mounting cavity; at least part of the rotor assembly is rotatably arranged in the stator, the rotor assembly comprises a rotor and a plurality of blades, the rotating axis of the rotor is eccentrically arranged relative to the central axis of the stator and has an eccentric distance e, a sub liquid conveying cavity is defined by every two adjacent blades, the rotor and the stator, and the liquid outlet hole is communicated with the liquid inlet hole through the liquid conveying cavities; wherein the eccentric distance e is adjustably arranged, and the volume difference value between any pair of oppositely arranged sub liquid conveying cavities is adjusted by adjusting the eccentric distance e between the stator and the rotor, so that the liquid flow and / or flow velocity at the liquid outlet hole are / is adjusted. According to the oil delivery pump, the problem that the oil delivery flow of the oil delivery pump in the prior art cannot be adjusted is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine oil supply, in particular to a delivery device and a delivery system having the same. Background Art

[0002] At present, a fuel injection pump is usually provided in the fuel supply system of the engine. The fuel inlet of the fuel injection pump is connected to the fuel delivery pump so that oil is delivered to the fuel injection pump through the fuel delivery pump. The fuel injection pump sprays the oil into the engine so that the engine can run stably. The fuel delivery pump usually operates at rated power, that is, the fuel delivery pump delivers oil to the fuel injection pump at a fixed oil delivery flow rate. However, the actual working flow rate required by the engine will change with the working conditions. When the oil delivery flow rate of the fuel delivery pump is greater than the actual oil demand flow rate of the engine, the excess oil delivered by the fuel pump needs to be discharged to ensure the stable operation of the fuel supply system.

[0003] In the prior art, in order to discharge excess oil, an overflow valve and an oil return pipeline are usually provided in the oil supply system. The oil return pipeline is connected to the oil tank. When the oil pressure in the oil delivery end of the oil pump is too high, the overflow valve will open to return the excess oil to the oil tank.

[0004] However, during the oil reflux process, on the one hand, the oil pump does a lot of useless work and wastes power; on the other hand, it increases the burden on the fuel filter on the return oil pipeline (used to filter the oil returning to the fuel tank), affecting the service life of the filter. Utility Model Content

[0005] The main purpose of the utility model is to provide a delivery device and a delivery system having the same, so as to solve the problem that the oil delivery flow rate of the oil delivery pump in the prior art cannot be adjusted.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a conveying device is provided for conveying liquid, the conveying device comprising: a shell having an installation cavity, a liquid inlet hole and a liquid outlet hole; a stator movably arranged in the installation cavity; a rotor assembly, at least part of which is rotatably arranged in the stator, the rotor assembly comprising a rotor and a plurality of blades, the rotation axis of the rotor being eccentrically arranged relative to the central axis of the stator and having an eccentricity e, one end of each blade being telescopically arranged in the rotor, the other end of each blade being in contact with the inner wall of the stator, the plurality of blades being arranged at intervals around the rotation axis of the rotor, a sub-infusion cavity being formed between two adjacent blades and at least part of the outer circumference of the rotor and at least part of the inner wall of the stator, the plurality of sub-infusion cavities forming an infusion cavity, the liquid outlet hole being connected to the liquid inlet hole through the infusion cavity; wherein the eccentricity e is adjustable, and the volume difference between any pair of oppositely arranged sub-infusion cavities is adjusted by adjusting the eccentricity e between the stator and the rotor, thereby adjusting the liquid flow rate and / or flow velocity at the liquid outlet hole.

[0007] Furthermore, the conveying device also includes a connecting structure, and the stator is rotatably connected to the shell through the connecting structure; wherein the rotation axis of the stator is staggered with the rotation axis of the rotor and the central axis of the stator.

[0008] Furthermore, the stator has an abutment protrusion, the shell has a connecting portion connected to the installation cavity, at least part of the abutment protrusion can be movably extended into the connecting portion, and the conveying device also includes: a pushing device, a pushing rod of the pushing device extends into the connecting portion and abuts against the abutment protrusion, and the pushing device drives the stator to rotate by pushing the abutment protrusion to adjust the eccentricity e.

[0009] Furthermore, the abutting protrusion is arranged opposite to the rotation axis of the connecting structure.

[0010] Furthermore, the conveying device also includes a reset structure, which is arranged in the connecting portion and connected to the abutting protrusion, and is used to apply a reset force to the stator to move toward one side of the pushing device.

[0011] Furthermore, the connecting portion is a recess, and a through hole connected to the mounting cavity is provided on the side wall of the recess, and the abutting protrusion extends into the recess through the through hole; the reset structure is a first elastic structure, one end of the first elastic structure is connected to the bottom wall of the recess, and the other end of the first elastic structure is connected to the abutting protrusion, and the telescopic direction of the first elastic structure is consistent with the pushing direction of the pushing device.

[0012] Furthermore, the shell also has a mounting surface, and the pushing device is arranged on the mounting surface to seal the connecting portion.

[0013] Furthermore, the connecting structure is a rotating shaft, which is arranged on the outer peripheral surface of the stator, and a connecting recess is provided on the inner wall of the shell, and at least the sub-rotating shaft is located in the connecting recess; wherein the rotating shaft can rotate relative to the inner wall of the connecting recess, and the extension direction of the connecting recess is consistent with the extension direction of the rotating shaft.

[0014] Furthermore, the conveying device also includes a sealing structure, which is arranged between the outer peripheral surface of the push rod and the inner wall of the connecting portion.

[0015] According to another aspect of the utility model, a conveying system is provided, the conveying system includes a conveying device, a detection device and a control module, the detection device is arranged at the liquid outlet of the conveying device to detect the liquid flow rate and / or flow rate at the liquid outlet, the control module is connected to both the pushing device and the detection device of the conveying device, and the control module controls the pushing rod of the pushing device to extend or retract according to the detection value of the detection device to adjust the liquid flow rate value and / or liquid flow rate value at the liquid outlet to a preset value. Wherein, the conveying device is the above-mentioned conveying device.

[0016] The technical solution of the utility model is applied, and the conveying device is used to convey liquid. The housing of the conveying device has an installation cavity, a liquid inlet hole and a liquid outlet hole. The stator can be movably arranged in the installation cavity, and at least part of the rotor assembly can be rotatably arranged in the stator. The rotor assembly includes a rotor and a plurality of blades. The rotation axis of the rotor is eccentrically arranged relative to the central axis of the stator and has an eccentricity e. One end of each blade can be telescopically arranged in the rotor, and the other end of each blade is in contact with the inner wall of the stator. The plurality of blades are arranged at intervals around the rotation axis of the rotor. A sub-infusion cavity is formed between two adjacent blades and at least part of the outer peripheral surface of the rotor and at least part of the inner wall of the stator. The plurality of sub-infusion cavities form an infusion cavity, and the liquid inlet hole is connected to the liquid outlet hole through the infusion cavity. The eccentricity e can be adjusted, and the volume difference between any pair of oppositely arranged sub-infusion cavities can be adjusted by adjusting the eccentricity e between the stator and the rotor, thereby adjusting the liquid flow rate and / or flow rate at the liquid outlet hole. In this way, the staff can adjust the eccentricity e between the stator and the rotor to adjust the delivery flow of the delivery device to match the liquid demand flow of the engine, so as to avoid a large amount of excess oil flowing back into the fuel tank, which would increase the power consumption of the delivery device and shorten the service life of the fuel filter. This solves the problem in the prior art that the oil delivery flow of the oil pump cannot be adjusted, reduces the operating cost of the delivery device, and extends the service life of the fuel filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A front view of the internal structure of the conveying device according to the utility model is shown;

[0019] Figure 2 Shows Figure 1 Schematic diagram of the three-dimensional structure inside the conveying device.

[0020] The above drawings include the following reference numerals:

[0021] 10. Shell; 13. Connecting portion; 14. Connecting recess; 15. Mounting surface; 20. Stator; 21. Abutting protrusion; 30. Rotor assembly; 31. Rotor; 32. Blades; 33. Second elastic structure; 40. Sub-infusion chamber; 50. Connecting structure; 60. Resetting structure; 70. Pushing device; 71. Pushing rod. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0024] In the present invention, unless otherwise specified, directional words such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0025] In order to solve the problem in the prior art that the oil delivery flow rate of the oil delivery pump cannot be adjusted, the present application provides a delivery device and a delivery system having the same.

[0026] like Figure 1 and Figure 2As shown, the conveying device is used to convey liquid, and the conveying device includes a housing 10, a stator 20 and a rotor assembly 30. The housing 10 has an installation cavity, a liquid inlet hole and a liquid outlet hole. The stator 20 can be movably arranged in the installation cavity. At least part of the rotor assembly 30 is rotatably arranged in the stator 20. The rotor assembly 30 includes a rotor 31 and a plurality of blades 32. The rotation axis of the rotor 31 is eccentrically arranged relative to the central axis of the stator 20 and has an eccentric distance e. One end of each blade 32 can be telescopically arranged in the rotor 31, and the other end of each blade 32 is abutted against the inner wall of the stator 20. The plurality of blades 32 are arranged at intervals around the rotation axis of the rotor 31. Two adjacent blades 32 and at least part of the outer peripheral surface of the rotor 31 and at least part of the inner wall of the stator 20 form a sub-infusion cavity 40. The plurality of sub-infusion cavities 40 form an infusion cavity, and the liquid outlet hole is connected with the liquid inlet hole through the infusion cavity. The eccentricity e can be adjusted by adjusting the eccentricity e between the stator 20 and the rotor 31 to adjust the volume difference between any pair of oppositely arranged sub-infusion chambers 40, thereby adjusting the liquid flow rate and / or flow velocity at the liquid outlet.

[0027] The technical solution of this embodiment is applied, and the conveying device is used to convey liquid. The housing 10 of the conveying device has an installation cavity, a liquid inlet hole and a liquid outlet hole. The stator 20 can be movably arranged in the installation cavity, and at least part of the rotor assembly 30 can be rotatably arranged in the stator 20. The rotor assembly 30 includes a rotor 31 and a plurality of blades 32. The rotation axis of the rotor 31 is eccentrically arranged relative to the central axis of the stator 20 and has an eccentricity e. One end of each blade 32 can be telescopically arranged in the rotor 31, and the other end of each blade 32 abuts against the inner wall of the stator 20. The plurality of blades 32 are arranged at intervals around the rotation axis of the rotor 31. A sub-infusion cavity 40 is formed between two adjacent blades 32 and at least part of the outer circumferential surface of the rotor 31 and at least part of the inner wall of the stator 20. The plurality of sub-infusion cavities 40 constitute an infusion cavity, and the liquid inlet hole is connected with the liquid outlet hole through the infusion cavity. Among them, the eccentricity e can be adjusted, and the volume difference between any pair of oppositely arranged sub-infusion chambers 40 can be adjusted by adjusting the eccentricity e between the stator 20 and the rotor 31, thereby adjusting the liquid flow rate and / or flow rate at the liquid outlet. In this way, the staff can adjust the delivery flow rate of the delivery device to match the required flow rate of the engine by adjusting the eccentricity e between the stator 20 and the rotor 31, so as to avoid a large amount of excess oil flowing back into the fuel tank, which will increase the power consumption of the delivery device and shorten the service life of the fuel filter, thereby solving the problem that the oil delivery flow rate of the oil pump in the prior art cannot be adjusted, reducing the operating cost of the delivery device and extending the service life of the fuel filter.

[0028] In this embodiment, a mounting recess is provided on the rotor 31, and the rotor assembly 30 further includes a second elastic structure 33, which is provided in the mounting recess, one end of the second elastic structure 33 is connected to the bottom wall of the mounting recess, and the other end of the second elastic structure 33 is connected to the blade 32, and the second elastic structure 33 is used to apply an elastic force to the blade 32 to move toward the side away from the rotor 31. Among them, there are multiple mounting recesses, multiple second elastic structures 33, multiple mounting recesses are provided in a one-to-one correspondence with the blade 32, and multiple second elastic structures 33 are provided in a one-to-one correspondence with multiple mounting recesses. In this way, the second elastic structure 33 applies an elastic force to the blade 32 to move toward the side away from the rotor 31, so that each blade 32 can be closely attached to the inner wall of the stator 20 during the rotation of the rotor assembly 30, so as to form a relatively closed sub-infusion cavity 40, thereby ensuring the operational stability of the conveying device.

[0029] Optionally, the second elastic structure 33 is a spring.

[0030] In this embodiment, there are six blades 32 , and the six blades 32 are arranged at intervals around the rotation axis of the rotor 31 and surround and form six sub-infusion chambers 40 .

[0031] In this embodiment, there are six mounting recesses and six second elastic structures 33 . The six mounting recesses are arranged in a one-to-one correspondence with the six blades 32 , and the six second elastic structures 33 are arranged in a one-to-one correspondence with the six mounting recesses.

[0032] It should be noted that the number of blades 32 is not limited thereto, and can be adjusted according to working conditions and usage requirements. Optionally, the number of blades 32 is three, four, five, seven, eight, nine, or more.

[0033] It should be noted that the number of the mounting recesses is not limited thereto and can be adjusted according to working conditions and usage requirements. Optionally, the number of the mounting recesses is three, four, five, seven, eight, nine, or more.

[0034] It should be noted that the number of the second elastic structures 33 is not limited thereto, and can be adjusted according to working conditions and usage requirements. Optionally, the number of the second elastic structures 33 is three, four, five, seven, eight, nine, or more.

[0035] Specifically, during the rotation of the rotor assembly 30, the sub-infusion chamber 40 has a first rotation range in which the volume increases and a second rotation range in which the volume decreases. The liquid inlet hole is located within the first rotation range and is connected to the sub-infusion chamber 40, and the liquid outlet hole is located within the second rotation range and is connected to the sub-infusion chamber 40. When the volume of the sub-infusion chamber 40 increases, the liquid outside the shell 10 flows into the sub-infusion chamber 40 through the liquid inlet hole. When the volume of the sub-infusion chamber 40 decreases, at least part of the liquid in the sub-infusion chamber 40 flows out through the liquid outlet hole to the outside of the shell 10 to transport the liquid.

[0036] like Figure 1 and Figure 2 As shown, the conveying device also includes a connecting structure 50, and the stator 20 is rotatably connected to the housing 10 through the connecting structure 50. Among them, the rotation axis of the stator 20 is staggered with the rotation axis of the rotor 31 and the central axis of the stator 20. In this way, the above arrangement, on the one hand, allows the stator 20 to be rotatably arranged in the installation cavity, so that the staff can adjust the eccentricity e between the stator 20 and the rotor 31 by operating the stator 20 to rotate, thereby making the adjustment method of the stator 20 simpler, easier to operate and implement; on the other hand, the rotation axis of the stator 20 is not coincident with the rotation axis of the rotor 31 and the central axis of the stator 20, so as to avoid the stator 20 from rotating, and the eccentricity e between it and the rotor 31 does not change, thereby improving the adjustment reliability of the stator 20.

[0037] like Figure 1 and Figure 2 As shown, the stator 20 has an abutting protrusion 21, the housing 10 has a connecting portion 13 communicating with the installation cavity, at least part of the abutting protrusion 21 can be movably extended into the connecting portion 13, and the conveying device also includes a pushing device 70, a pushing rod 71 of the pushing device 70 extends into the connecting portion 13 and abuts against the abutting protrusion 21, and the pushing device 70 drives the stator 20 to rotate by pushing the abutting protrusion 21 to adjust the eccentricity e. In this way, the above arrangement, on the one hand, enables the pushing rod 71 of the pushing device 70 to abut against the abutting protrusion 21 to drive the stator 20 to rotate through the abutting protrusion 21 and the connecting portion 13; on the other hand, the pushing device 70 can realize the automatic adjustment of the stator 20, which not only improves the automation degree of the conveying device, but also reduces the labor intensity of the staff.

[0038] Optionally, the pushing device 70 is a control valve, and the pushing rod 71 is a valve stem of the control valve.

[0039] Optionally, the pushing device 70 is an electric push rod.

[0040] like Figure 1 and Figure 2As shown, the abutting protrusion 21 is arranged opposite to the rotation axis of the connecting structure 50. In this way, when the pushing device 70 pushes the abutting protrusion 21 to drive the stator 20 to rotate, the abutting protrusion 21 can rotate around the rotation axis of the stator 20, thereby improving the rotation smoothness of the stator 20.

[0041] like Figure 1 and Figure 2 As shown, the conveying device further includes a reset structure 60, which is arranged in the connecting portion 13 and connected to the abutting protrusion 21. The reset structure 60 is used to apply a reset force to the stator 20 to move toward one side of the pushing device 70. In this way, the above arrangement can realize the automatic reset of the stator 20 through the reset structure 60, further improve the automation degree of the conveying device, and reduce the labor intensity of the staff; on the other hand, the reset force applied by the reset structure 60 to the stator 20 can also press the stator 20 onto the pushing rod 71 of the pushing device 70 when the stator 20 does not rotate, so as to fix the stator 20, thereby preventing the stator 20 from shaking or deviating during the rotation of the rotor assembly 30, thereby changing the conveying flow of the conveying device, thereby improving the operation stability of the conveying device.

[0042] like Figure 1 and Figure 2 As shown, the connecting portion 13 is a concave portion, and a through hole communicating with the installation cavity is provided on the side wall of the concave portion, and the abutting protrusion 21 extends into the concave portion through the through hole. The reset structure 60 is a first elastic structure, one end of the first elastic structure is connected to the bottom wall of the concave portion, and the other end of the first elastic structure is connected to the abutting protrusion 21, and the telescopic direction of the first elastic structure is consistent with the pushing direction of the pushing device 70. In this way, the above arrangement enables the connecting portion 13 to be connected with the installation cavity through the through hole on the side wall, so as to ensure that the abutting protrusion 21 can extend into the connecting portion 13; on the other hand, the reset structure 60 can be installed on the bottom wall of the connecting portion 13 to realize the installation and fixation of the reset structure 60. At the same time, the above arrangement makes the structure of the reset structure 60 simpler, easier to process and realize, thereby reducing the processing difficulty and processing cost of the reset structure 60.

[0043] Optionally, the first elastic structure is a spring.

[0044] like Figure 1 and Figure 2 As shown, the housing 10 further has a mounting surface 15, and the push device 70 is arranged on the mounting surface 15 to block the connecting portion 13. Thus, the above arrangement reduces the difficulty of installing the push device 70 on the one hand; on the other hand, by blocking the connecting portion 13 with the push device 70, it is possible to prevent the liquid in the mounting cavity from flowing out of the housing 10 through the connecting portion 13, thereby improving the sealing performance of the housing 10.

[0045] In this embodiment, one end of the communication portion 13 communicating with the outside is located inside the mounting surface 15 .

[0046] like Figure 1 and Figure 2 As shown, the connection structure 50 is a rotating shaft, which is arranged on the outer peripheral surface of the stator 20, and a connecting recess 14 is arranged on the inner wall of the housing 10, and at least part of the rotating shaft is located in the connecting recess 14. The rotating shaft can rotate relative to the inner wall of the connecting recess 14, and the extending direction of the connecting recess 14 is consistent with the extending direction of the rotating shaft. In this way, the above arrangement realizes the rotation connection between the connection structure 50 and the housing 10 through the connecting recess 14 on the one hand; on the other hand, the connecting recess 14 consistent with the extending direction of the rotating shaft can ensure the smoothness of the rotation of the rotating shaft, thereby reducing the difficulty of adjusting the stator 20. At the same time, the above arrangement makes the structure of the connection structure 50 simpler, easier to process and realize, thereby reducing the processing difficulty of the staff and the processing cost of the connection structure 50.

[0047] In this embodiment, the inner wall of the connecting recess 14 is arranged in an arc shape, so that the inner wall of the connecting recess 14 can match the outer circumferential surface of the rotating shaft, further improving the rotation smoothness of the rotating shaft.

[0048] In this embodiment, the conveying device further includes a sealing structure, which is disposed between the outer peripheral surface of the push rod 71 and the inner wall of the connecting portion 13. In this way, the sealing structure can seal the gap between the push rod 71 and the inner wall of the connecting portion 13 to further prevent the oil in the installation cavity from flowing out through the gap between the two, thereby improving the sealing performance of the conveying device.

[0049] The present application also provides a delivery system (not shown), the delivery system includes a delivery device, a detection device and a control module, the detection device is arranged at the liquid outlet of the delivery device, and is used to detect the liquid flow rate and / or flow rate at the liquid outlet, the control module is connected to the push device 70 and the detection device of the delivery device, and the control module controls the push rod 71 of the push device 70 to extend or retract according to the detection value of the detection device, so as to adjust the liquid flow rate value and / or liquid flow rate value at the liquid outlet to a preset value; wherein the delivery device is the above-mentioned delivery device. In this way, the above-mentioned setting realizes the intelligent adjustment of the delivery flow of the delivery device through the control module and the detection device, so as to ensure that the delivery flow of the delivery device can match the actual required flow of the engine, thereby avoiding the delivery flow of the delivery device being too large and causing a large amount of excess oil to flow back into the fuel tank, which not only reduces the operating cost of the delivery device, but also reduces the burden on the fuel filter on the return oil pipeline, and prolongs the service life of the fuel filter.

[0050] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0051] The conveying device is used to convey liquid. The shell of the conveying device has an installation cavity, a liquid inlet hole and a liquid outlet hole. The stator can be movably arranged in the installation cavity. At least part of the rotor assembly can be rotatably arranged in the stator. The rotor assembly includes a rotor and a plurality of blades. The rotation axis of the rotor is eccentrically arranged relative to the central axis of the stator and has an eccentricity e. One end of each blade can be telescopically arranged in the rotor. The other end of each blade is in contact with the inner wall of the stator. The plurality of blades are arranged at intervals around the rotation axis of the rotor. A sub-infusion cavity is formed between two adjacent blades and at least part of the outer peripheral surface of the rotor and at least part of the inner wall of the stator. The plurality of sub-infusion cavities form an infusion cavity. The liquid inlet hole is connected to the liquid outlet hole through the infusion cavity. The eccentricity e can be adjusted. By adjusting the eccentricity e between the stator and the rotor, the volume difference between any pair of oppositely arranged sub-infusion cavities can be adjusted, thereby adjusting the liquid flow rate and / or flow rate at the liquid outlet hole. In this way, the staff can adjust the eccentricity e between the stator and the rotor to adjust the delivery flow of the delivery device to match the liquid demand flow of the engine, so as to avoid a large amount of excess oil flowing back into the fuel tank, which would increase the power consumption of the delivery device and shorten the service life of the fuel filter. This solves the problem in the prior art that the oil delivery flow of the oil pump cannot be adjusted, reduces the operating cost of the delivery device, and extends the service life of the fuel filter.

[0052] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0053] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0055] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A conveying device for conveying liquid, characterized in that: The conveying device comprises: The housing (10) has a mounting cavity, a liquid inlet hole and a liquid outlet hole; A stator (20) is movably arranged in the installation cavity; A rotor assembly (30), wherein at least a portion of the rotor assembly (30) is rotatably disposed in the stator (20), the rotor assembly (30) comprising a rotor (31) and a plurality of blades (32), the rotation axis of the rotor (31) being eccentrically disposed relative to the central axis of the stator (20) and having an eccentric distance e, one end of each blade (32) being telescopically disposed in the rotor (31), the other end of each blade (32) being in contact with the inner wall of the stator (20), a plurality of blades (32) being spaced apart around the rotation axis of the rotor (31), a sub-infusion cavity (40) being formed between two adjacent blades (32) and at least a portion of the outer circumference of the rotor (31) and at least a portion of the inner wall of the stator (20), a plurality of sub-infusion cavities (40) forming an infusion cavity, and the liquid outlet being connected to the liquid inlet through the infusion cavity; The eccentricity e is adjustable, and the volume difference between any pair of oppositely arranged sub-infusion chambers (40) is adjusted by adjusting the eccentricity e between the stator (20) and the rotor (31), thereby adjusting the liquid flow rate and / or flow velocity at the liquid outlet.

2. The conveying device according to claim 1, characterized in that The conveying device further comprises a connecting structure (50), and the stator (20) is rotatably connected to the housing (10) via the connecting structure (50); wherein the rotation axis of the stator (20) is staggered with the rotation axis of the rotor (31) and the central axis of the stator (20).

3. The conveying device according to claim 2, characterized in that: The stator (20) has an abutting protrusion (21), the housing (10) has a connecting portion (13) connected to the installation cavity, at least a portion of the abutting protrusion (21) can be movably extended into the connecting portion (13), and the conveying device further includes: A pushing device (70), wherein a pushing rod (71) of the pushing device (70) extends into the connecting portion (13) and abuts against the abutting protrusion (21); the pushing device (70) drives the stator (20) to rotate by pushing the abutting protrusion (21) to adjust the eccentricity e.

4. The conveying device according to claim 3, characterized in that: The abutting protrusion (21) is arranged opposite to the rotation axis of the connecting structure (50).

5. The conveying device according to claim 3, characterized in that: The conveying device also includes: A reset structure (60), wherein the reset structure (60) is arranged in the connecting portion (13) and connected to the abutting protrusion (21), and the reset structure (60) is used to apply a reset force to the stator (20) to move toward one side of the pushing device (70).

6. The conveying device according to claim 5, characterized in that The communicating portion (13) is a concave portion, a through hole communicating with the mounting cavity is provided on a side wall of the concave portion, and the abutting convex portion (21) extends into the concave portion through the through hole; The reset structure (60) is a first elastic structure, one end of which is connected to the bottom wall of the recess, and the other end of which is connected to the abutting protrusion (21), and the telescopic direction of the first elastic structure is consistent with the pushing direction of the pushing device (70).

7. The conveying device according to claim 3, characterized in that: The housing (10) further comprises a mounting surface (15), and the pushing device (70) is arranged on the mounting surface (15) to seal the connecting portion (13).

8. The conveying device according to claim 2, characterized in that: The connecting structure (50) is a rotating shaft, which is arranged on the outer peripheral surface of the stator (20), and a connecting recess (14) is arranged on the inner wall of the housing (10), and at least part of the rotating shaft is located in the connecting recess (14); wherein the rotating shaft can rotate relative to the inner wall of the connecting recess (14), and the extension direction of the connecting recess (14) is consistent with the extension direction of the rotating shaft.

9. The conveying device according to claim 3, characterized in that: The conveying device further comprises a sealing structure, which is arranged between the outer peripheral surface of the push rod (71) and the inner wall of the connecting portion (13).

10. A conveying system, characterized in that: The conveying system includes a conveying device, a detection device and a control module. The detection device is arranged at the liquid outlet of the conveying device to detect the liquid flow rate and / or flow rate at the liquid outlet. The control module is connected to the pushing device (70) of the conveying device and the detection device. The control module controls the pushing rod (71) of the pushing device (70) to extend or retract according to the detection value of the detection device to adjust the liquid flow rate value and / or liquid flow rate value at the liquid outlet to a preset value; wherein the conveying device is the conveying device described in any one of claims 1 to 9.

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