Servo coaxial double-rotor pump

Abstract

The invention discloses a servo coaxial double-rotor pump which comprises a cylindrical pump shell, the pump shell is provided with an input pipe and an output pipe which are adjacent, a first fan-shaped piston and a second fan-shaped piston which coaxially rotate are arranged in the pump shell, and the first fan-shaped piston is in transmission connection with a first external servo motor through a first rotating shaft. And the fan-shaped piston II is in transmission connection with an external servo motor II through a rotating shaft II. The first fan-shaped piston and the second fan-shaped piston can cover the input pipe and the output pipe. The first fan-shaped piston and the second fan-shaped piston are the same in length and attached to the inner wall of the pump shell. The dry-type conveying device has the advantages that materials are sucked in in a vacuumizing suction mode, meanwhile, the materials are stably pushed and discharged, the materials are not stirred and cut, active pressing on the materials is avoided, damage to the materials is avoided, the first fan-shaped piston and the second fan-shaped piston do not need lubricating oil, and dry-type conveying is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of servo coaxial twin-rotor pumps, in particular to a servo coaxial twin-rotor pump. Background Art

[0002] Most of the pump blades of liquid or gas delivery pumps in the prior art are blade-shaped, such as common water pumps, which rely on the rotation of pump blades to actively push and deliver materials. The pump blades obviously stir and cut the materials during rotation, which actively presses the materials and easily causes damage. They are not suitable for conveying some special liquids or gases. In addition, most of the rotors of existing pumps require lubricating oil, which is inconvenient. Summary of the invention

[0003] The object of the present invention is to provide a servo coaxial twin-rotor pump to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] The present invention provides a servo coaxial twin-rotor pump, comprising a cylindrical pump casing, wherein the pump casing is provided with adjacent input pipes and output pipes, wherein a coaxially rotating fan-shaped piston 1 and a fan-shaped piston 2 are provided inside the pump casing, wherein the fan-shaped piston 1 is transmission-connected to an external servo motor 1 via a rotating shaft 1, and the fan-shaped piston 2 is transmission-connected to an external servo motor 2 via a rotating shaft 2.

[0006] As an improvement, the sector-shaped piston 1 and the sector-shaped piston 2 can both cover the input pipe and the output pipe.

[0007] As an improvement, the sector-shaped piston 1 and the sector-shaped piston 2 have the same length and fit closely with the inner wall of the pump casing.

[0008] The advantages of the present invention compared with the prior art are: the material is sucked in by vacuum suction, and the material is pushed out smoothly at the same time, without stirring and cutting the material, thus avoiding active compression of the material and causing damage to the material; the fan-shaped piston 1 and the fan-shaped piston 2 do not require lubricating oil, thus realizing dry conveying. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] 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 listed below are only some structural schematic diagrams of the present invention, not all of them.

[0010] Figure 1 It is a structural schematic diagram of a servo coaxial twin-rotor pump of the present invention.

[0011] Figure 2 It is a top view of a servo coaxial twin-rotor pump of the present invention.

[0012] Figure 3 A sectional view of a servo coaxial twin-rotor pump of the present invention Figure 1 .

[0013] Figure 4 This is a diagram showing the separated state of the sector-shaped piston 1 and the sector-shaped piston 2 of a servo coaxial twin-rotor pump of the present invention.

[0014] Figure 5 A sectional view of a servo coaxial twin-rotor pump of the present invention Figure 2 .

[0015] Figure 6 A sectional view of a servo coaxial twin-rotor pump of the present invention Figure 3 .

[0016] Figure 7 A sectional view of a servo coaxial twin-rotor pump of the present invention Figure 4 .

[0017] Reference numerals:

[0018] Pump housing 1; input pipe 2; output pipe 3; sector piston 1 4; sector piston 2 5; rotating shaft 1 6; servo motor 1 7; rotating shaft 2 8; servo motor 2 9. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In addition, if the terms "first", "second", "third", etc. appear, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance. If the terms "horizontal", "vertical", "overhanging", etc. appear, it does not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of the embodiments of the present invention, if the terms "multiple" or "several" appear, they represent at least two.

[0023] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] This embodiment combines the attached Figures 1 to 7 , a servo coaxial twin-rotor pump is described in detail.

[0025] The present embodiment is a servo coaxial twin-rotor pump, comprising a cylindrical pump casing 1, wherein the pump casing 1 is provided with adjacent inlet pipe 2 and outlet pipe 3, wherein a coaxially rotating fan-shaped piston 1 4 and a fan-shaped piston 2 5 are provided inside the pump casing 1, wherein the fan-shaped piston 1 4 is transmission-connected to an external servo motor 1 7 via a rotating shaft 1 6, and the fan-shaped piston 2 5 is transmission-connected to an external servo motor 2 9 via a rotating shaft 2 8.

[0026] The sector piston 1 4 and the sector piston 2 5 can both cover the input pipe 2 and the output pipe 3 .

[0027] The sector-shaped piston 1 4 and the sector-shaped piston 2 5 have the same length and fit closely with the inner wall of the pump housing 1 .

[0028] During the specific implementation, the input pipe 2 is connected to the feed end, the output pipe 3 is connected to the discharge end, the servo motor 7 drives the fan-shaped piston 4 to rotate, the servo motor 29 drives the fan-shaped piston 25 to rotate, the fan-shaped piston 4 and the fan-shaped piston 25 rotate in the same direction, and the servo motor 17 and the servo motor 29 are connected to the controller to control their rotation speed.

[0029] In the initial state, if Figure 3 , the fan-shaped piston 1 4 and the fan-shaped piston 2 5 cover the input pipe 2 and the output pipe 3 respectively, then the fan-shaped piston 1 4 rotates counterclockwise quickly, and the fan-shaped piston 2 5 rotates counterclockwise slowly. At this time, the input pipe 2 is opened, such as Figure 5 At the same time, a negative pressure suction space is formed between the sector piston 1 4 and the sector piston 2 5 and gradually expands, sucking liquid or gas from the input pipe 2 until Figure 6 At this time, the fan-shaped piston 2 5 covers the input pipe 2, and the fan-shaped piston 1 4 covers the output pipe 3. A momentary closed storage space is formed between the fan-shaped piston 2 5 and the fan-shaped piston 1 4, and the counterclockwise rotation is continued (the fan-shaped piston 1 4 rotates slowly, and the fan-shaped piston 2 5 rotates quickly). Figure 7 , the input pipe 2 and the output pipe 3 are opened at the same time, a negative pressure suction space is formed between the left side of the sector piston 2 5 and the sector piston 1 4, and the space gradually expands, sucking the liquid or gas from the input pipe 2, and at the same time, the liquid or gas stored on the right side of the sector piston 2 5 is gradually discharged from the output pipe 3, and the counterclockwise rotation is continued until the negative pressure suction space is gradually expanded. Figure 3 The fan-shaped piston 1 4 and the fan-shaped piston 2 5 cover the input pipe 2 and the output pipe 3 respectively. Liquid or gas is stored between the fan-shaped piston 1 4 and the fan-shaped piston 2 5, and is discharged when it continues to rotate. In this way, the liquid or gas is transported through a cycle of suction and discharge.

[0030] The present invention and its embodiments are described above, and such description is not restrictive, and the actual protection scope is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A servo coaxial twin-rotor pump, characterized in that: The invention comprises a cylindrical pump casing (1), wherein the pump casing (1) is provided with an adjacent input pipe (2) and an output pipe (3), wherein a coaxially rotating sector piston 1 (4) and sector piston 2 (5) are provided inside the pump casing (1), wherein the sector piston 1 (4) is connected to an external servo motor 1 (7) through a rotating shaft 1 (6), and the sector piston 2 (5) is connected to an external servo motor 2 (9) through a rotating shaft 2 (8).

2. A servo coaxial twin-rotor pump according to claim 1, characterized in that: The sector-shaped piston 1 (4) and the sector-shaped piston 2 (5) can both cover the input pipe (2) and the output pipe (3).

3. A servo coaxial twin-rotor pump according to claim 1, characterized in that: The sector-shaped piston 1 (4) and the sector-shaped piston 2 (5) have the same length and fit closely with the inner wall of the pump housing (1).

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