Multi-stage dynamic blending pump and blending equipment

Abstract

The invention relates to the technical field of oil blending, and provides a multi-stage dynamic blending pump and blending equipment. The multi-stage dynamic blending pump comprises a pump body, a plurality of barrels, a main shaft and an impeller, a pump cavity is formed in the inner side of the pump body, and the pump body is provided with an inlet pipe and an outlet pipe which are communicated with the pump cavity; the multiple barrels are coaxially arranged in the pump cavity and are arranged in a sleeved mode, one end of the barrel located on the inner side communicates with the inlet pipe, and hollowed-out holes are formed in the side walls of the barrels; the main shaft is rotatably arranged in the pump body in a penetrating manner; the impeller and the main shaft are coaxially fixed, and when rotating along with the main shaft, the impeller is suitable for driving liquid to enter the barrel on the inner side from the inlet pipe and penetrate through the multiple barrels layer by layer to be discharged through the outlet pipe. According to the multi-stage dynamic blending pump, when the impeller is driven by the main shaft to rotate, fuel oil enters the barrel on the inner side through the inlet pipe and flows outwards, a good mixing effect can be achieved through the shearing action of the multiple barrels, and the mixing process has the advantage of being high in mixing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of oil blending, and in particular to a multi-stage dynamic blending pump and blending equipment. Background Art

[0002] The traditional method of blending fuel oil in my country is to input the component oils into the blending tank and use stirring to blend the oils. The disadvantage of this method is that it only uses the side stirring paddles in the tank for mixing, which results in low mixing efficiency. Summary of the invention

[0003] The invention provides a multi-stage dynamic blending pump and a blending device, which are used to solve the problem of low mixing efficiency in the traditional fuel oil blending production method in the prior art.

[0004] The present invention provides a multi-stage dynamic blending pump, comprising:

[0005] A pump body, wherein a pump cavity is disposed inside the pump body, and the pump body is provided with an inlet pipe and an outlet pipe communicating with the pump cavity;

[0006] A plurality of cylinders are coaxially arranged in the pump cavity and sleeved with each other, one end of the cylinder located inside is connected to the inlet pipe, and a hollow hole is arranged on the side wall of the cylinder;

[0007] A main shaft, the main shaft is rotatably disposed through the pump body;

[0008] The impeller is coaxially fixed with the main shaft. When the impeller rotates with the main shaft, it is suitable for driving the liquid to enter the inner cylinder from the inlet pipe and pass through the hollow holes of the cylinder layer by layer before being discharged from the outlet pipe.

[0009] According to a multi-stage dynamic adjustment pump provided by the present invention, at least part of the plurality of cylinders are transmission-connected to the main shaft, and adjacent cylinders rotate relatively under the drive of the main shaft.

[0010] According to a multi-stage dynamic blending pump provided by the present invention, the multiple cylinders include an inner cylinder, a middle cylinder and an outer cylinder, the middle cylinder is drivingly connected to the main shaft, and the inner cylinder and the outer cylinder are fixedly connected to the pump body.

[0011] According to a multi-stage dynamic adjustment pump provided by the present invention, the main shaft includes an inner shaft and an outer shaft, the inner shaft is sleeved on the inner side of the outer shaft, the inner shaft and the outer shaft have opposite rotation directions, the inner shaft is coaxially fixed with the impeller, and the outer shaft is coaxially fixed with the middle cylinder.

[0012] According to a multi-stage dynamic adjustment pump provided by the present invention, the main shaft also includes a transmission gear and a support member, the inner shaft is rotatably inserted into the support member, the inner shaft is provided with external teeth, the outer shaft is provided with internal teeth, the transmission gear is rotatably connected to the support member, and is respectively meshed with the external teeth and the internal teeth.

[0013] According to a multi-stage dynamic blending pump provided by the present invention, more than two impellers are provided, and each impeller is disposed in a different cylinder and is respectively connected to the main shaft.

[0014] A multi-stage dynamic blending pump provided by the present invention also includes:

[0015] A shearing blade is disposed in the pump chamber and connected to the main shaft.

[0016] According to a multi-stage dynamic blending pump provided by the present invention, the pump chamber includes an installation chamber and an oil-swinging chamber which are interconnected, the cylinder is located in the installation chamber, the shear blade is located in the oil-swinging chamber, and the outlet pipe is perpendicular to the main shaft and connected to the oil-swinging chamber.

[0017] A multi-stage dynamic blending pump provided according to the present invention further comprises a base and a frame, wherein the frame is fixedly connected with the base and the pump body respectively.

[0018] The present invention also provides a blending device, comprising a motor and the above-mentioned multi-stage dynamic blending pump, wherein the motor is drivingly connected to the main shaft.

[0019] The multi-stage dynamic blending pump provided by the present invention, when the main shaft drives the impeller to rotate, the fuel oil enters the inner cylinder from the inlet pipe and flows outward. A good mixing effect can be achieved through the shearing action of multiple cylinders. The mixing process has the advantage of high mixing efficiency.

[0020] Furthermore, the blending equipment provided by the present invention also has the above advantages because it includes a multi-stage dynamic blending pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a stereoscopic diagram of a multi-stage dynamic blending pump provided by the present invention in a use state;

[0023] Figure 2This is one of the cross-sectional views of a multi-stage dynamic blending pump provided by the present invention in a use state;

[0024] Figure 3 This is the second cross-sectional view of a multi-stage dynamic blending pump provided by the present invention in a use state;

[0025] Figure 4 This is an explosion-proof photo showing the cylinder structure of a multi-stage dynamic blending pump provided by the present invention;

[0026] Figure 5 It is a schematic diagram showing the main shaft structure in a multi-stage dynamic blending pump provided by the present invention;

[0027] Figure 6 It is a schematic diagram showing a shear plate structure in a multi-stage dynamic blending pump provided by the present invention;

[0028] Figure numerals: 100, pump body; 101, pump chamber; 102, inlet pipe; 103, outlet pipe; 104, shear plate; 105, oil drain pipe; 106, switch valve; 200, main shaft; 201, inner shaft; 202, outer shaft; 203, transmission gear; 204, support; 300, impeller; 400, cylinder; 401, inner cylinder; 402, middle cylinder; 403, outer cylinder; 500, shear blade; 600, base; 601, frame; 602, bracket; 700, mounting cylinder; 701, double-body bearing; 702, single bearing; 703, access hole; 800, motor. DETAILED DESCRIPTION

[0029] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0032] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0034] Combine the following Figure 1-Figure 6 A multi-stage dynamic adjustment pump according to an embodiment of the present invention is described, comprising a pump body 100, a plurality of cylinders 400, a main shaft 200 and an impeller 300; a pump chamber 101 is arranged on the inner side of the pump body 100, and the pump body 100 is provided with an inlet pipe 102 and an outlet pipe 103 connected to the pump chamber 101; a plurality of cylinders 400 are coaxially arranged in the pump chamber 101 and are mutually sleeved, one end of the cylinder 400 located on the inner side is connected to the inlet pipe 102, and a hollow hole is arranged on the side wall of the cylinder 400; the main shaft 200 is rotatably penetrated in the pump body 100; the impeller 300 is coaxially fixed with the main shaft 200, and when the impeller 300 rotates with the main shaft 200, it is suitable for driving the liquid to enter the inner cylinder 400 from the inlet pipe 102 and pass through the plurality of cylinders 400 layer by layer and then be discharged from the outlet pipe 103.

[0035] According to the multi-stage dynamic blending pump of the embodiment of the present invention, the pump chamber 101 of the pump body 100 is a cylindrical cavity, and the inlet pipe 102, the cylinder 400, the main shaft 200 and the impeller 300 are all coaxial with the pump chamber 101. A plurality of cylinders 400 are arranged in sequence, and the ends of the cylinders 400 are circular plates. One end of the inlet pipe 102 extends into the pump chamber 101 and is connected to the inner cylinder 400. When the main shaft 200 drives the impeller 300 to rotate so that the fuel oil enters the inner cylinder 400 through the inlet pipe 102, the fuel oil can pass through the hollow holes of each cylinder 400 in sequence. In this process, the fence structure of the cylinder 400 can have a good mixing effect on the fuel oil. The fuel oil flowing out of the outer cylinder 400 can be discharged through the outlet pipe 103.

[0036] In some embodiments of the present invention, at least some of the multiple cylinders 400 are in transmission connection with the main shaft 200, and adjacent cylinders 400 rotate relatively under the drive of the main shaft 200. The relative rotation between adjacent cylinders 400 can achieve a better shearing effect on the fuel oil.

[0037] Optionally, the plurality of cylinders 400 include an inner cylinder 401, a middle cylinder 402 and an outer cylinder 403, the inner cylinder 401, the middle cylinder 402 and the outer cylinder 403 are sequentially sleeved from the inside to the outside, the middle cylinder 402 is connected to the main shaft 200 by transmission, the middle cylinder 402 is connected to the main shaft 200 by transmission, and the inner cylinder 401 and the outer cylinder 403 are fixedly connected to the pump body 100. In this embodiment, only the middle cylinder 402 is driven by the main shaft 200 to rotate. Since the inner cylinder 401 and the outer cylinder 403 are fixedly connected to the pump body 100, when the middle cylinder 402 rotates, the effect of relative rotation between adjacent cylinders 400 can be achieved. It can be understood that this embodiment only schematically introduces a solution in which three cylinders 400 are provided. In other embodiments, the cylinders 402 can also be provided with 2, 4, 5, etc., which will not be described in detail here. The relative rotation between adjacent cylinders 400 can also be achieved by using a transmission method such as gears to make the adjacent cylinders 400 rotate in opposite directions or at different speeds.

[0038] Optionally, the side walls of the middle tube 402 and the outer tube 403 are formed by a fence structure, and the hollow holes are located between adjacent constituent rods of the fence structure.

[0039] Optionally, the side walls of the middle cylinder 402 and the outer cylinder 403 include a plurality of circumferentially arranged rods, each of which is arranged at an angle to the axis of the cylinder 400, and the rods of the middle cylinder 402 and the outer cylinder 403 are arranged at an angle to each other. Preferably, the inclination directions of the rods of the middle cylinder 402 and the outer cylinder 403 are opposite.

[0040] Optionally, the inclination angle of the rod body on the side wall of the middle tube 402 is between 15° and 45°, and the inclination angle of the rod body on the side wall of the outer tube 403 is between 145° and 165°.

[0041] By configuring the side walls of the middle cylinder 402 and the outer cylinder 403 to be fence structures, the fuel oil can more easily pass through the cylinder 400, thereby reducing energy loss and achieving a better shearing effect.

[0042] To facilitate the transmission connection between the middle cylinder 402 and the main shaft 200, the inner cylinder 401 and the outer cylinder 403 are fixedly connected to the pump body 100. In this embodiment, the inlet pipe 102 is passed through the end plate of the pump body 100 and is fixedly connected to the end plate of the pump body 100. One end of the inlet pipe 102 located in the pump chamber 101 is fixedly connected to the inner cylinder 401 and the outer cylinder 403, and is rotatably connected to the middle cylinder 402. Therefore, the inlet pipe 102 can support the inner cylinder 401, the middle cylinder 402 and the outer cylinder 403.

[0043] In some embodiments of the present invention, the main shaft 200 includes an inner shaft 201 and an outer shaft 202, the inner shaft 201 is sleeved on the inner side of the outer shaft 202, the inner shaft 201 and the outer shaft 202 rotate in opposite directions, the inner shaft 201 is coaxially fixed with the impeller 300, and the outer shaft 202 is coaxially fixed with the middle cylinder 402. In this embodiment, when the inner shaft 201 drives the impeller 300 to rotate so that the fuel oil enters the inner cylinder 401 and flows outward, the fuel oil is affected by the impeller 300 and rotates in the opposite direction to the rotation direction of the middle cylinder 402, so that the fuel oil has a better shearing effect when passing through the middle cylinder 402.

[0044] Optionally, one end of the inner shaft 201 located in the pump chamber 101 extends to the outside of the outer shaft 202, the outer shaft 202 can be rotatably passed through the end plate of the outer cylinder 403 and fixedly connected to the end plate of the middle cylinder 402, and the inner shaft 201 can be rotatably passed through the end plates of the outer cylinder 403 and the middle cylinder 402, and fixedly connected to the impeller 300.

[0045] In some embodiments of the present invention, the main shaft 200 further includes a transmission gear 203 and a support member 204, wherein the position and angle of the support member 204 are fixed, the inner shaft 201 is rotatably disposed in the support member 204, the inner shaft 201 is provided with external teeth, the outer shaft 202 is provided with internal teeth, and the transmission gear 203 is rotatably connected to the support member 204, and meshes with the external teeth and the internal teeth respectively. In this embodiment, the inner shaft 201 and the outer shaft 202 are transmitted through the transmission gear 203, and when one of the inner shaft 201 and the outer shaft 202 is connected to a power source, the other can generate rotation in the opposite direction, thereby driving the impeller 300 and the middle cylinder 402 to generate rotation in the opposite direction.

[0046] In some embodiments of the present invention, there are more than two impellers 300, each of which is placed in a different cylinder 400 and is connected to the main shaft 200. Each impeller 300 rotates under the drive of the main shaft 200, generating a greater negative pressure, achieving a better pumping effect, and is conducive to reducing the volume of a single impeller 300, thereby reducing the structural strength requirements of a single impeller 300. In addition, since different impellers 300 are placed in different cylinders 400, the volume of a single cylinder 400 can be reduced, and it is conducive to ensuring the power of the fuel oil passing through each level of the cylinder 400, achieving a better shearing effect.

[0047] Optionally, two impellers 300 are provided along the axial direction of the main shaft 200 , wherein one impeller 300 is located in the inner cylinder 401 , and the other impeller 300 is located outside the inner cylinder 401 and inside the middle cylinder 402 .

[0048] Optionally, the two impellers 300 are coaxially fixed to the inner shaft 201 .

[0049] In some embodiments of the present invention, the multi-stage dynamic adjustment pump further includes a shear blade 500, which is disposed in the pump chamber 101 and connected to the main shaft 200. The shear blade 500 is a plate-like structure disposed perpendicularly to the main shaft 200. In this embodiment, a plurality of shear blades 500 are disposed around the circumference of the main shaft 200.

[0050] Optionally, the shear blade 500 is a fan-shaped structure whose width gradually increases from an end connected to the main shaft 200 to an end away from the main shaft 200 .

[0051] Optionally, the shear blade 500 is fixed to the outer shaft 202 by welding.

[0052] Optionally, the pump chamber 101 includes a mounting chamber and an oil-swing chamber that are connected to each other, the mounting chamber and the oil-swing chamber are arranged along the axial direction of the cylinder 400, and the mounting chamber is located on a side of the oil-swing chamber close to the inlet pipe 102. The cylinder 400 is located in the mounting chamber, the shear blade 500 is located in the oil-swing chamber, and the outlet pipe 103 is perpendicular to the main shaft 200 and connected to the oil-swing chamber.

[0053] Optionally, the multi-stage dynamic adjustment pump also includes a shear plate 104, which is an arc-shaped plate structure. The shear plate 104 is wrapped around the outside of the shear blade 500. The shear plate 104 is provided with a plurality of perforations, which can be long elliptical holes. The length of the perforation is 1 / 3 of the axial length of the shear plate 104. Each perforation is arranged in two rows around the circumference of the shear plate 104. The two rows of perforations are arranged along the axial direction of the shear plate 104, and the two rows of perforations are alternately arranged.

[0054] In this embodiment, the fuel oil passing through the multiple cylinders 400 layer by layer collides with the inner wall of the installation cavity, and flows into the oil-slinging cavity under the obstruction of the inner wall of the installation cavity, and the liquid flow is broken up by the shear plate 104 to achieve a better blending effect. When the shear plate 104 rotates, it can also provide power for the fuel oil to flow out of the outlet pipe 103, thereby reducing the working pressure of the impeller 300.

[0055] In some embodiments of the present invention, an oil drain pipe 105 is provided on the lower side of the pump body 100, and the oil drain pipe 105 is connected to the pump chamber 101. The oil drain pipe 105 is provided with a switch valve 106. The oil drain pipe 105 can be opened by the switch valve 106 to discharge the fuel oil in the pump body 100, thereby preventing the fuel oil from remaining in the pump body 100 for a long time.

[0056] In some embodiments of the present invention, the multi-stage dynamic blending pump further includes a base 600 and a frame 601 , and the frame 601 is fixedly connected to the base 600 and the pump body 100 , respectively.

[0057] Optionally, the frame 601 is detachably connected to the base 600 and the pump body 100, for example, by bolts, so that the frame 601 can be easily disassembled and packed for transportation.

[0058] In some embodiments of the present invention, the multi-stage dynamic adjustment pump further includes a bracket 602, the bracket 602 is fixedly connected to the base 600, and the main shaft 200 is rotatably connected to the bracket 602. The bracket 602 can support the main shaft 200 to ensure the stability of the rotation of the main shaft 200. Furthermore, the bracket 602 is also used to be fixedly connected to the motor 800 to support the motor 800.

[0059] Optionally, the support member 204 is fixedly connected to the bracket 602, and the inner shaft 201 is passed through the bracket 602 and connected to the rotating shaft of the motor 800 via a coupling. The coupling in this embodiment is preferably an elastic coupling.

[0060] In some embodiments of the present invention, the multi-stage dynamic adjustment pump further includes a mounting barrel 700, the mounting barrel 700 is located between the pump body 100 and the bracket 602, the end of the mounting barrel 700 is fixedly connected to the pump body 100, the main shaft 200 is axially arranged in the mounting barrel 700, the main shaft 200 is rotatably connected to the end of the mounting barrel 700 close to the pump body 100 through a double-body bearing 701, and is rotatably connected to the end of the mounting barrel 700 away from the pump body 100 through a single bearing 702. An access hole 703 is provided on the upper side of the mounting barrel 700.

[0061] The mounting cylinder 700 in this embodiment can be used as a housing structure of a reduction gearbox, or as a cooling box or a lubrication box, which is not specifically limited here.

[0062] The embodiment of the present invention further provides a blending device, including a motor 800 and the above-mentioned multi-stage dynamic blending pump, wherein the motor 800 is transmission-connected to the main shaft 200 .

[0063] In this embodiment, the motor 800 may be a hydraulic motor 800 or an electric motor 800, which is not specifically limited here.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-stage dynamic blending pump, characterized in that: include: A pump body, wherein a pump cavity is disposed inside the pump body, and the pump body is provided with an inlet pipe and an outlet pipe communicating with the pump cavity; A plurality of cylinders are coaxially arranged in the pump cavity and sleeved with each other, one end of the cylinder located inside is connected to the inlet pipe, and a hollow hole is arranged on the side wall of the cylinder; A main shaft, the main shaft is rotatably disposed through the pump body; The impeller is coaxially fixed with the main shaft. When the impeller rotates with the main shaft, it is suitable for driving the liquid to enter the inner cylinder from the inlet pipe and pass through the hollow holes of the cylinder layer by layer before being discharged from the outlet pipe.

2. The multi-stage dynamic blending pump according to claim 1, characterized in that: At least some of the multiple cylinders are in transmission connection with the main shaft, and adjacent cylinders rotate relatively under the drive of the main shaft.

3. The multi-stage dynamic blending pump according to claim 1 or 2, characterized in that: The multiple cylinders include an inner cylinder, a middle cylinder and an outer cylinder. The middle cylinder is drivingly connected to the main shaft, and the inner cylinder and the outer cylinder are fixedly connected to the pump body.

4. The multi-stage dynamic blending pump according to claim 3, characterized in that: The main shaft comprises an inner shaft and an outer shaft, the inner shaft is sleeved on the inner side of the outer shaft, the inner shaft and the outer shaft rotate in opposite directions, the inner shaft is coaxially fixed with the impeller, and the outer shaft is coaxially fixed with the middle cylinder.

5. The multi-stage dynamic blending pump according to claim 4, characterized in that: The main shaft also includes a transmission gear and a support member, the inner shaft is rotatably inserted into the support member, the inner shaft is provided with external teeth, the outer shaft is provided with internal teeth, the transmission gear is rotatably connected to the support member and meshes with the external teeth and the internal teeth respectively.

6. The multi-stage dynamic blending pump according to claim 1, characterized in that: There are more than two impellers, each of which is disposed in a different cylinder and is connected to the main shaft respectively.

7. The multi-stage dynamic blending pump according to claim 1, characterized in that: Also includes: A shearing blade is disposed in the pump chamber and connected to the main shaft.

8. The multi-stage dynamic blending pump according to claim 7, characterized in that: The pump chamber comprises a mounting chamber and an oil-swinging chamber which are connected to each other, the cylinder is located in the mounting chamber, the shear blade is located in the oil-swinging chamber, and the outlet pipe is perpendicular to the main shaft and connected to the oil-swinging chamber.

9. The multi-stage dynamic blending pump according to claim 1, characterized in that: It also includes a base and a frame, and the frame is fixedly connected with the base and the pump body respectively.

10. A blending device, characterized in that: It comprises a motor and a multi-stage dynamic blending pump as described in any one of claims 1 to 9, wherein the motor is drivingly connected to the main shaft.

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