Fluid conveying equipment

Abstract

The utility model relates to the technical field of conveying equipment, in particular to fluid conveying equipment. A sealing structure is arranged between a rotary conveying pipe and a water inlet pipe or a water outlet pipe. The sealing structure comprises an annular metal fixing piece fixedly connected to the inner surface of the water inlet pipe or the water outlet pipe; the annular metal rotating piece is fixedly connected to the outer surface of the rotary conveying pipe; the elastic body element is fixed on the rotating piece, the elastic body element is provided with a radial lip and an axial lip, and the radial lip and the axial lip are in sliding contact with the fixed piece; wherein the rotating piece is provided with a first flange, the fixed piece is provided with a second flange, an axial gap is formed between the first flange and the second flange, the axial lip completely seals the axial gap, and the axial lip is provided with a near-end supporting part connected with the first flange and a far-end sealing part in sliding contact with the second flange; double sealing is achieved through the axial lip and the radial lip of the elastomer element, and the sealing performance can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of conveying equipment, and particularly relates to a fluid conveying equipment. BACKGROUND

[0002] The structure of the conventional fluid conveying equipment can be divided into an impeller, a pump shell and a pump shaft, the impeller is a rotating component, the energy conversion is realized by the blade on the fluid to convert the mechanical energy into the kinetic energy and the pressure energy of the fluid.

[0003] The fluid conveying equipment is fixedly connected with the impeller and the rotating conveying pipe (pump shell), the pump shell is rotated to convey the fluid, but the rotating connection between the inlet pipe and the outlet pipe and the rotating conveying pipe can cause leakage.

[0004] Therefore, it is urgent to provide an improved technical scheme to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above-mentioned technical problems, and provides a fluid conveying equipment with high sealing performance.

[0006] Therefore, the utility model provides a fluid conveying equipment, which comprises:

[0007] The fixed base comprises an inlet pipe, an outlet pipe and a mounting cavity;

[0008] The rotating conveying pipe is rotatably arranged in the mounting cavity and rotatably connected with the inlet pipe and the outlet pipe at both ends, and the inner wall of the rotating conveying pipe is fixedly connected with a spiral blade;

[0009] The driving device is used for driving the rotating conveying pipe to rotate;

[0010] The uniform sealing structure is arranged between the rotating conveying pipe and the inlet pipe or the outlet pipe;

[0011] The sealing structure comprises:

[0012] The annular metal fixing part is fixedly connected with the inner surface of the inlet pipe or the outlet pipe;

[0013] The annular metal rotating part is fixedly connected with the outer surface of the rotating conveying pipe;

[0014] The elastic body element is fixed on the rotating part, the elastic body element has a radial lip and an axial lip, and the radial lip and the axial lip are in sliding contact with the fixing part;

[0015] The rotating part is provided with a first flange, the fixed part is provided with a second flange, an axial gap is formed between the first flange and the second flange, the axial lip completely seals the axial gap, and the axial lip is provided with a proximal support part connected with the first flange and a distal sealing part in sliding contact with the second flange.

[0016] Further, the driving device comprises:

[0017] At least two magnetic bodies are fixedly connected to the outer wall of the rotating conveying pipe in a circumferential distribution;

[0018] At least two excitation assemblies are arranged on the inner wall of the mounting cavity in a circumferential distribution.

[0019] Further, the driving device further comprises:

[0020] The fixed pipe comprises an inner pipe and an outer pipe, the inner pipe and the rotating conveying pipe directly form a first cavity, the fixed pipe is fixedly connected to the mounting cavity, the magnetic body is arranged in the first cavity, a second cavity is formed between the inner pipe and the outer pipe, and the excitation assembly is arranged in the second cavity.

[0021] Further, the spiral blade is composed of N pieces of blade bodies arranged in a spiral in the central axis direction of the rotating conveying pipe, and the blade bodies are inclined relative to the central axis and the radial direction of the rotating conveying pipe.

[0022] Further, the blade body is provided with three.

[0023] Further, the radial protruding length of the blade body is less than half of the inner diameter of the rotating output pipe.

[0024] Further, the inner side of the spiral blade is formed with a flow channel.

[0025] Further, the supporting roller is rotatably connected to the fixed base and is in contact with the outer wall of the rotating conveying pipe in a circumferential distribution.

[0026] The utility model discloses the beneficial effects are:

[0027] 1. The utility model discloses the axial lip and radial lip of elastomer element carry out double sealing, can improve the sealing performance.

[0028] 2. The utility model discloses the magnetic field cooperation of magnetic body and excitation assembly forms the structure same as brushless motor in working principle, makes the rotating conveying pipe can rotate under the action of magnetic field, realizes conveying fluid, and this structure's driving device has the advantages such as long service life, not easy to damage. DRAWINGS

[0029] Figure 1 It is the sectional structure schematic view of the utility model;

[0030] Figure 2 It is the cross section structure schematic view of the supporting roller of the utility model;

[0031] Figure 3 It is the structure schematic view of the driving device of the utility model;

[0032] Figure 4 It is the structure schematic view of the sealing structure of the utility model;

[0033] Figure 5 It is the structure schematic view of the integrated spiral blade of the utility model;

[0034] Figure 6 It is the structure schematic view of the spiral blade of the utility model that multiple pieces constitute.

[0035] The mark in the drawing indicates that:

[0036] 1, fixed base; 2, water inlet pipe; 3, water outlet pipe; 4, installation cavity; 5, spiral blade; 6, sealing structure; 601, fixed part; 602, rotating part; 603, elastomer element; 604, radial lip; 605, axial lip; 606, first flange; 607, second flange; 608, proximal support part; 609, distal sealing part; 7, magnetic body; 8, excitation assembly; 9, fixed tube; 901, first cavity; 902, second cavity; 10, piece; 11, flow channel; 12, supporting roller; 13, rotating conveying pipe. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0038] Embodiment 1:

[0039] The embodiment provides a fluid conveying device, which comprises:

[0040] The fixed base 1 comprises a water inlet pipe 2, a water outlet pipe 3 and an installation cavity 4;

[0041] The rotating conveying pipe is rotatably arranged in the installation cavity 4, and the two ends thereof are rotatably connected with the water inlet pipe 2 and the water outlet pipe 3 respectively, and the inner wall of the rotating conveying pipe is fixedly connected with the spiral blade 5;

[0042] The driving device is used for driving the rotating conveying pipe to rotate;

[0043] The sealing structure 6 is arranged between the rotating conveying pipe and the water inlet pipe 2 and between the rotating conveying pipe and the water outlet pipe 3.

[0044] Sealing structure 6 includes:

[0045] The annular metal fastener 601 is fixedly connected to the inner surface of the inlet pipe 2 or the outlet pipe 3;

[0046] An annular metal rotating component 602 is fixedly connected to the outer surface of the rotating conveying pipe 13;

[0047] An elastomer element 603 is fixed on a rotating member 602. The elastomer element 603 has a radial lip 604 and an axial lip 605. The radial lip 604 and the axial lip 605 are in sliding contact with the fixed member 601.

[0048] The rotating member 602 is provided with a first flange 606, and the fixing member 601 is provided with a second flange 607. An axial gap is formed between the first flange 606 and the second flange 607. The axial lip 605 completely seals the axial gap. The axial lip 605 is provided with a proximal support portion 608 connected to the first flange 606 and a distal sealing portion 609 that slides in contact with the second flange 607.

[0049] This utility model relates to a device located between two pipes for supplying fluids. The concept of fluid includes liquids, gases, powders, and particles. Liquids include water, crude oil, petroleum products, and alcohol. Petroleum products include heavy oil, diesel, gasoline, benzene, and toluene. Gases include natural gas, fuel oil, air, and precious gases. Powders include grain flour, skim milk powder, and toner. Particles include grains, resin particles, and ground ore. Grains include corn, rice, and beans. This fluid conveying device is used to transport crude oil, natural gas, grains, etc., and within cities, to transport fuels, water, alcohol, benzene, and rare natural gas.

[0050] The mounting cavity 4 is fixedly connected to two detachable water inlet pipes 2 and 3. A rotating conveying pipe is provided inside the mounting cavity 4, and the two ends of the rotating conveying pipe are rotatably slidably connected to the water inlet pipe 2 and the water outlet pipe 3 respectively. A spiral blade 5 is provided on the inner wall of the rotating conveying pipe. A driving device is provided in the fixed base 1. The driving device is used to drive the rotating conveying pipe to rotate. It can be driven by a motor and gears. A gear is provided on the outer wall of the rotating conveying pipe. A wire hole for placing the power supply wire for the driving device is provided on the outer wall of the mounting cavity 4. A sealing structure 6 is provided between the rotating conveying pipe and the water inlet pipe 2 or the water outlet pipe 3.

[0051] The sealing structure 6 includes a ring-shaped metal fixing member 601 and a rotating member 602. The fixing member 601 is integrally formed with the water inlet pipe 2 or the water outlet pipe 3 and is disposed on the inner surface of the water inlet pipe 2 or the water outlet pipe 3. The rotating member 602 is integrally formed on the outer surface of the rotating conveying pipe. The elastomer element 603 is made of rubber and is fixed to the rotating member 602 by a metal ring, so that the elastomer element 603 rotates together with the rotating member 602. The elastomer element 603 has a radial lip 6. 04 and axial lip 605, radial lip 604 and axial lip 605 are all in sliding contact with the fixing member 601. A first flange 606 is provided on the rotating member 602 and a second flange 607 is provided on the fixing member 601. An axial gap is formed between the first flange 606 and the second flange 607. The axial gap is completely sealed by the axial lip 605. The axial lip 605 is provided with a proximal support portion 608 that abuts against and connects with the first flange 606, and a distal sealing portion 609 that slides in contact with the second flange 607.

[0052] The distal sealing portion 609 and the proximal support portion 608 are integrally formed.

[0053] Working principle:

[0054] The sealing structure 6 is integrally formed with the fixing member 601 and the rotating member 602 respectively, and is fixed between the water inlet pipe 2 or the water outlet pipe 3 and the rotating conveying pipe. The axial gap between the first flange 606 and the second flange 607 is extended by the provided elastic element 603. The longer axial gap formed by the elastic element 603 and the double seal by the axial lip 605 and the radial lip 604 of the elastic element 603 can improve the sealing performance.

[0055] Example 2:

[0056] This embodiment provides a fluid transport device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0057] The drive unit includes:

[0058] At least two magnetic bodies 7 are evenly distributed around the circumference and fixedly connected to the outer wall of the rotating conveying pipe;

[0059] At least two excitation components 8 are evenly distributed circumferentially within the inner wall of the mounting cavity 4.

[0060] The magnetic body 7 is a permanent magnet, which can be a natural magnet or a man-made magnet. Several electromagnets are circumferentially and evenly distributed and fixedly connected to the outer wall of the rotating conveying tube. The specific connection method can be glue bonding. The excitation assembly 8 is a device that converts current into a working magnetic field. It includes an excitation winding, an iron core, a commutator, a junction box, and cables. The excitation winding generates a working magnetic field by passing DC current through it. The iron core can provide a low magnetic reluctance path and enhance the magnetic field strength. It adopts a stator iron core, which is made of stacked silicon steel sheets and coated with an insulating layer to reduce losses. The function of the commutator is to introduce external power into the excitation winding. Brushless excitation uses a rotating rectifier (such as a silicon diode). The junction box and cables are used to connect the external power supply and the excitation winding and can provide an electrical interface.

[0061] By combining the magnetic fields of the magnetic body 7 and the excitation component 8, a structure with the same working principle as a brushless motor is formed, which allows the rotating conveying pipe to rotate under the action of the magnetic field to transport fluid. This type of drive device has the advantages of long service life and is not easily damaged.

[0062] In addition, a cooling system can be provided to dissipate heat from the excitation winding, such as a heat sink outside the excitation winding, or a circulating coolant system.

[0063] Example 3:

[0064] This embodiment provides a fluid transport device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0065] Also includes:

[0066] The fixed tube 9 includes an inner tube and an outer tube. A first cavity 901 is formed between the inner tube and the rotating conveying tube. The fixed tube 9 is fixedly connected in the mounting cavity 4. The magnetic body 7 is placed in the first cavity 901. A second cavity 902 is formed between the inner tube and the outer tube. An excitation assembly 8 is provided in the second cavity 902.

[0067] The fixing tube 9 is fixed inside the mounting cavity 4. It can be an interference fit or it can be fixed by fasteners passing through the wall of the mounting cavity 4 and the mounting ears provided on the fixing tube 9. The fixing tube 9 has a first cavity 901 and a second cavity 902. Windows are provided on both sides of the first cavity 901 to facilitate the installation of the magnetic body 7. The inner side of the fixing tube 9 is in sliding contact with the rotating conveying tube.

[0068] By setting the fixed tube 9, it can serve as a mounting bracket for the excitation assembly 8, making the installation structure of the excitation assembly 8 more stable. Furthermore, the sliding contact between the inner side of the fixed tube 9 and the rotary conveying tube can make the position of the rotary conveying tube more stable.

[0069] Example 4:

[0070] This embodiment provides a fluid transport device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0071] The spiral blade 5 is composed of N equally spaced blades 10, which are spirally arranged in the direction of the central axis of the rotating conveying tube, wherein the blades 10 are inclined relative to the central axis and the radial direction of the rotating conveying tube.

[0072] By breaking down the entire helical blade 5 into smaller parts, material costs are reduced while fluid resistance to the helical blade 5 is decreased, making it easier for the helical blade 5 to start rotating.

[0073] There are three pieces of the sheet 10.

[0074] The radial protrusion length of the plate 10 is less than half the inner diameter of the rotating output tube.

[0075] A flow channel 11 is formed on the inner side of the spiral blade 5.

[0076] The flow channel 11 allows the fluid to pass through at a faster speed.

[0077] The support rollers 12 are rotatably connected to the fixed base 1 and are evenly distributed around the circumference and abut against the outer wall of the rotating conveying pipe.

[0078] There are at least three support rollers 12, and four are shown in the figure. They are rotatably connected to the inner wall of the fixed base 1. The support rollers 12 are used to support the rotating conveying pipe and enhance the stability of the rotating conveying pipe when it rotates.

[0079] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms fall within the scope of protection of this application.

Claims

1. A fluid conveying device, characterized in that, include: The fixed base (1) includes an inlet pipe (2), an outlet pipe (3), and an installation cavity (4); A rotating conveying pipe is rotatably installed in the mounting cavity (4), and its two ends are rotatably connected to the inlet pipe (2) and the outlet pipe (3) respectively. The inner wall of the rotating conveying pipe is fixedly connected with a spiral blade (5). A drive unit is used to drive the rotary conveyor pipe to rotate. A uniform sealing structure (6) is provided between the rotating conveying pipe and the inlet pipe (2) or the outlet pipe (3); The sealing structure (6) includes: An annular metal fastener (601) is fixedly connected to the inner surface of the inlet pipe (2) or the outlet pipe (3); An annular metal rotating component (602) is fixedly connected to the outer surface of the rotating conveying pipe; An elastomer element (603) is fixed on a rotating member (602). The elastomer element (603) has a radial lip (604) and an axial lip (605). The radial lip (604) and the axial lip (605) are in sliding contact with the fixed member (601). The rotating member (602) is provided with a first flange (606), the fixing member (601) is provided with a second flange (607), an axial gap is formed between the first flange (606) and the second flange (607), the axial lip (605) completely seals the axial gap, and the axial lip (605) is provided with a proximal support portion (608) connected to the first flange (606) and a distal sealing portion (609) that slides in contact with the second flange (607).

2. The fluid conveying device according to claim 1, characterized in that, The drive unit includes: At least two magnetic bodies (7) are evenly distributed around the circumference and fixedly connected to the outer wall of the rotating conveying pipe; At least two excitation components (8) are evenly distributed around the inner wall of the mounting cavity (4).

3. The fluid conveying device according to claim 2, characterized in that, Also includes: The fixed tube (9) includes an inner tube and an outer tube. A first cavity (901) is formed between the inner tube and the rotating conveying tube. The fixed tube (9) is fixedly connected in the mounting cavity (4). The magnetic body (7) is placed in the first cavity (901). A second cavity (902) is formed between the inner tube and the outer tube. An excitation assembly (8) is provided in the second cavity (902).

4. A fluid conveying device according to claim 1, characterized in that, The spiral blade (5) is composed of N plates (10) with equal spacing and is spirally arranged in the direction of the central axis of the rotating conveying tube, wherein the plates (10) are inclined relative to the central axis and the radial direction of the rotating conveying tube.

5. A fluid conveying device according to claim 3, characterized in that, There are three pieces of sheet (10).

6. A fluid conveying device according to claim 4 or 5, characterized in that, The radial protrusion length of the plate (10) is less than half the inner diameter of the rotating output tube.

7. A fluid conveying device according to claim 1, characterized in that, A flow channel (11) is formed on the inner side of the helical blade (5).

8. A fluid conveying device according to claim 1, characterized in that, At least three support rollers (12) are rotatably connected to the fixed base (1) and are evenly distributed around the circumference and abut against the outer wall of the rotating conveying pipe.

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