Rotatable pump body structure liquid ring vacuum pump

Abstract

The application belongs to the technical field of liquid ring vacuum pumps, and particularly relates to a rotatable pump body structure liquid ring vacuum pump, which comprises a pump body, an impeller, a pump shaft, a pump body side cover and a distributor, the pump shaft sequentially penetrates through the pump body, the distributor and the impeller and is rotationally connected to the pump body side cover, the impeller is fixedly installed on the pump shaft, and the pump body is internally provided with a rotating pump body structure surrounding the impeller. In the application, the pump shaft drives the impeller to rotate, the impeller drives the liquid ring to rotate at a high speed, the rotating liquid ring drives the rotating pump body to rotate through friction, the liquid ring and the rotating pump body are relatively static, and the friction and energy loss of the liquid and the rotating pump body are greatly reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of liquid ring vacuum pumps, in particular to a liquid ring vacuum pump with a rotatable pump body structure. BACKGROUND

[0002] During the working process of the liquid ring vacuum pump, the impeller drives the liquid to rotate, the liquid will rub against the inner wall of the pump body, resulting in a large amount of energy loss and pump body wear;

[0003] Based on the above problems, the Chinese patent with the application number 202311307692.X discloses a high-efficiency liquid ring vacuum pump, the impeller of the pump is eccentrically installed in the shell, an internal gear is formed on the inner wall surface of the pump shell, and a tooth-shaped rib plate is additionally arranged on the radial outer edge of the impeller, referring to the description of the patent Figure 3 The shell rotates together with the impeller in the process of rotation due to the internal meshing transmission structure between the impeller and the shell, the impeller drives the shell to rotate in the same direction by using the gear meshing principle, thereby reducing the relative speed between the shell and the liquid ring and reducing the hydraulic loss caused by the high-speed rotation of the liquid ring; however, the gear transmission is low in efficiency, and the gear itself and the liquid ring have relatively large losses, and it is necessary to develop a more efficient and wear-preventing mechanism to solve the problems existing in the prior art. SUMMARY

[0004] Based on the technical problems existing in the prior art, the application provides a liquid ring vacuum pump with a rotatable pump body structure, which includes but is not limited to a conical structure and a flat and round disc structure.

[0005] The application provides a liquid ring vacuum pump with a rotatable pump body structure, which includes a pump body, an impeller, a pump shaft, a pump body side cover and a distributor, the pump shaft sequentially penetrates the pump body, the distributor and the impeller and is rotationally connected to the pump body side cover, the impeller is fixedly installed on the pump shaft, the pump body is internally provided with a bearing and a rotating pump body surrounding the impeller, the outer ring of the bearing is fixedly connected to the inner wall of the pump body, and the inner ring of the bearing is fixedly connected to the rotating pump body; the pump shaft drives the impeller to rotate, the impeller drives the liquid ring to rotate, the rotating liquid ring drives the rotating pump body to rotate through friction force, the bearing ensures the stable rotation of the rotating pump body, the liquid ring and the rotating pump body are relatively stationary, and the friction and energy loss of the liquid and the rotating pump body are greatly reduced.

[0006] Preferably, the position where the rotating pump body is connected with the distributor is provided with a gap seal, and the position where the rotating pump body is connected with the pump body side cover is also provided with a gap seal; during the rotation of the rotating pump body with the liquid ring, the gap seals between the rotating pump body and the distributor and the pump body side cover can effectively prevent the leakage of the fluid in the pump from the gap between the two, avoiding the pressure loss caused by the external leakage of the high-pressure fluid and preventing the infiltration of external air affecting the vacuum degree; at the same time, the gap seal structure does not produce rigid contact with the rotating rotating pump body, which can reduce the friction loss, ensure the smooth rotation of the rotating pump body, maintain the relative static state of the liquid ring and the rotating pump body, and further ensure the efficient operation of the vacuum pump.

[0007] Preferably, the pump body side cover is provided with an air inlet pipe and an air outlet pipe; the gas to be pumped enters the pump through the air inlet pipe, is compressed under the action of the impeller and the liquid ring, and then is discharged through the air outlet pipe, realizing the pumping and discharging functions of the vacuum pump.

[0008] Preferably, the inner wall of the pump body is fixedly installed with a first magnet, the outer wall of the rotating pump body is fixedly installed with a second magnet, the same poles of the first magnet and the second magnet are arranged opposite to each other, and the first magnet and the second magnet are arranged between the two bearings; when the first magnet and the second magnet replace the bearings, the suspension force is generated by the repulsion of the same poles of the first magnet and the second magnet, so that the rotating pump body is suspended in the pump body and does not contact the pump body, there is no mechanical friction loss, the subsequent wear of the bearings does not exist, and at the same time, the rotating pump body can rotate with the liquid ring; in another case, when the first magnet and the second magnet are used together with the bearings, the subsequent wear of the rolling bodies in the bearings can be effectively reduced, the service life is prolonged, and the efficient state of the vacuum pump is maintained.

[0009] Preferably, the first magnet is a semi-enclosed structure, and the second magnet is a fully-enclosed structure.

[0010] Preferably, the first magnet and the second magnet can be composed of a whole magnet or composed of a plurality of magnets spliced.

[0011] Preferably, the first magnet and the second magnet are both permanent magnets.

[0012] Preferably, the first magnet and the second magnet are both electromagnets.

[0013] Preferably, the first magnet and the second magnet are a combination of electromagnets and permanent magnets.

[0014] Preferably, the circumferential inner wall of the rotating pump body is fixedly connected with a plurality of annularly arrayed spokes; the annularly arrayed spokes can enhance the structural strength of the rotating pump body, and in the process of rotation of the liquid ring, the liquid ring directly drives the rotating pump body to rotate synchronously by pushing the spokes, instead of mainly driving the rotating pump body to rotate by friction, so that the relative movement between the liquid ring and the rotating pump body is reduced, and the flow resistance and energy loss are reduced.

[0015] Preferably, the length direction of the spoke forms an angle of 30-90° with the tangent direction of the position of the rotating pump body where the spoke is located; the angle setting makes the spoke better adapt to the rotation direction of the liquid ring, reduces the relative friction and hydraulic loss between the liquid ring and the spoke, and further improves the operation efficiency of the vacuum pump.

[0016] Preferably, the two ends of the rotating pump body are respectively provided with a sealing plate bushing, the sealing plate bushing rotates with the rotating pump body along with the rotation of the liquid ring, so that the rotating pump body with the sealing plate bushing can further wrap the formed liquid ring, thereby further reducing the friction loss between the liquid ring and the pump body.

[0017] Compared with the prior art, the present application provides a rotatable pump body structure liquid ring vacuum pump, which has the following beneficial effects:

[0018] 1. A rotatable pump body structure liquid ring vacuum pump, the rotating pump body structure of the liquid ring vacuum pump is connected with the pump body through a bearing, the rotating pump body is driven to rotate by the friction of the liquid ring, the liquid ring and the rotating pump body are relatively stationary, the friction and energy loss between the two are greatly reduced, and the stability of the rotating pump body is ensured by the bearing.

[0019] 2. A rotatable pump body structure liquid ring vacuum pump, when a magnetic suspension structure is used instead of a bearing, the rotating pump body is suspended by using the principle that same-named magnetic poles repel each other, the rotating pump body and the liquid ring are relatively stationary, when the magnetic suspension structure is used together with the bearing, the wear caused by mechanical contact of the rolling body inside the bearing is avoided, the energy loss is further reduced, the service life of the equipment is prolonged, and the stable operation of the rotating pump body is ensured.

[0020] 3. A rotatable pump body structure liquid ring vacuum pump, the setting of the spokes enhances the structural strength of the rotating pump body, and the relative movement between the liquid ring and the rotating pump body is reduced by directly pushing the rotating pump body to rotate, the flow resistance and energy loss are reduced, and the specific angle of the spokes can better adapt to the rotation direction of the liquid ring, thereby improving the operation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The present application provides a rotatable pump body structure liquid ring vacuum pump, and the whole structure schematic view of the rotatable pump body structure liquid ring vacuum pump is shown in the figure.

[0022] Figure 2A side view structural schematic diagram of a rotatable pump body structure liquid ring vacuum pump is provided in the present application;

[0023] Figure 3 A side view structural schematic diagram of a rotatable pump body structure liquid ring vacuum pump is provided in the present application;

[0024] Figure 4 A first magnet and a second magnet of a rotatable pump body structure liquid ring vacuum pump are permanent magnets, and a mounting structure schematic diagram is provided in the present application;

[0025] Figure 5 A first magnet and a second magnet of a rotatable pump body structure liquid ring vacuum pump are permanent magnets and electromagnets, and a mounting structure schematic diagram is provided in the present application;

[0026] Figure 6 A spoke mounting structure schematic diagram of a rotatable pump body structure liquid ring vacuum pump is provided in the present application;

[0027] Figure 7 A spoke mounting structure schematic diagram of a rotatable pump body structure liquid ring vacuum pump is provided in the present application;

[0028] Figure 8 A sealing plate bushing mounting structure schematic diagram of a rotatable pump body structure liquid ring vacuum pump is provided in the present application;

[0029] Figure 9 A rotatable pump body structure liquid ring vacuum pump is provided in the present application Figure 1 An enlarged structure schematic diagram of A is provided in the present application.

[0030] In the figure: 1, pump body; 2, rotatable pump body; 3, bearing; 4, impeller; 5, pump shaft; 6, pump body side cover; 7, air inlet pipe; 8, air outlet pipe; 9, distributor; 10, first magnet; 11, second magnet; 12, spoke; 13, sealing plate bushing. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments.

[0032] In the description of the present application, it should be understood that the terms “upper”, “lower”, “front”, “rear”, “left”, “right”, “top”, “bottom”, “inner”, “outer” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] Reference Figures 1-3 and Figure 9 A rotatable pump body structure liquid ring vacuum pump, comprising a pump body 1, an impeller 4, a pump shaft 5, a pump body side cover 6 and a distributor 9, the pump shaft 5 passes through the pump body 1, the distributor 9 and the impeller 4 in turn and is rotationally connected to the pump body side cover 6, the impeller 4 is fixedly installed on the pump shaft 5, the pump body 1 is internally provided with a bearing 3 and a rotating pump body 2 surrounding the impeller 4, the outer ring of the bearing 3 is fixedly connected with the inner wall of the pump body 1, and the inner ring of the bearing 3 is fixedly connected with the rotating pump body 2;

[0034] In use, the pump shaft 5 drives the impeller 4 to rotate, the impeller 4 drives the liquid ring to rotate, the rotating liquid ring drives the rotating pump body 2 to rotate through friction, and the bearing 3 ensures the stable rotation of the rotating pump body 2, so that the liquid ring is relatively static with the rotating pump body 2, and the friction and energy loss of the liquid with the rotating pump body 2 are greatly reduced.

[0035] Further, referring to Figure 8 Both ends of the rotating pump body 2 are respectively provided with an end plate bushing 13, the end plate bushing 13 rotates with the rotating pump body 2 along with the flow of the liquid, so that the rotating pump body 2 with the end plate bushing 13 can further wrap the formed liquid ring, thereby further reducing the friction loss between the liquid ring and the pump body 1.

[0036] The position where the rotating pump body 2 is connected with the distributor 9 is provided with a gap seal, and the position where the rotating pump body 2 is connected with the pump body side cover 6 is also provided with a gap seal.

[0037] In use, the gap seals between the rotating pump body 2 and the distributor 9 and the pump body side cover 6 can effectively block the leakage of the fluid in the pump from the gap between the two, which not only avoids the pressure loss caused by the external leakage of the internal high-pressure fluid, but also prevents the external air from penetrating to affect the vacuum degree; at the same time, the gap seal structure does not produce rigid contact with the rotating rotating pump body 2, which can reduce the friction loss, ensure the smooth rotation of the rotating pump body 2, maintain the relative static state of the liquid ring and the rotating pump body 2, and further ensure the efficient operation of the vacuum pump.

[0038] The pump body side cover 6 is provided with an air inlet pipe 7 and an air outlet pipe 8.

[0039] In use, the gas to be pumped enters the pump through the air inlet pipe 7, is compressed under the action of the impeller 4 and the liquid ring, and then is discharged through the air outlet pipe 8, so as to realize the pumping and discharging functions of the vacuum pump.

[0040] In embodiment 1, referring to Figure 6 The circumferential inner wall of the rotating pump body 2 is fixedly connected with a plurality of spoke 12 arranged in an annular array;

[0041] In use, the spoke 12 distributed in annular array can enhance the structural strength of the rotating pump body 2, and in the process of rotation of the liquid ring, the liquid ring can directly drive the rotating pump body 2 to rotate synchronously by pushing the spoke 12, rather than mainly by friction, so as to reduce the relative motion with the liquid ring, reduce the flow resistance, energy loss and friction heat.

[0042] In embodiment 2, referring to Figure 6 and Figure 7 , the length direction of the spoke 12 forms an angle of 30°-90° with the tangent direction of the position of the rotating pump body 2 where the spoke 12 is located;

[0043] In use, the angle setting makes the spoke 12 better adapt to the rotation direction of the liquid ring, reduces the relative friction and hydraulic loss between the liquid ring and the spoke 12, and further improves the operating efficiency of the vacuum pump.

[0044] Further, the inner wall of the pump body 1 is fixedly installed with the first magnet 10, the outer wall of the rotating pump body 2 is fixedly installed with the second magnet 11, the same poles of the first magnet 10 and the second magnet 11 are arranged opposite to each other, and the first magnet 10 and the second magnet 11 are arranged between the two bearings 3;

[0045] In use, when the first magnet 10 and the second magnet 11 are used instead of the bearing 3, the first magnet 10 and the second magnet 11 generate a suspension force due to repulsion of the same poles, so that the rotating pump body 2 is suspended in the pump body 1 without contacting the pump body 1, without mechanical friction loss, so that the subsequent wear of the bearing 3 does not exist, and the rotating pump body 2 can also rotate with the liquid ring; in another case, when the first magnet 10 and the second magnet 11 are used together with the bearing 3, the subsequent wear of the rolling body inside the bearing 3 can be effectively reduced, the service life is prolonged, and the high efficiency of the vacuum pump is maintained.

[0046] It should be noted that the arrangement and structure of the first magnet 10 and the second magnet 11 are described with reference to Figure 4 and Figure 5 , the first magnet 10 is a semi-enclosed structure, which is not limited to a semicircle, an arc, a part of an ellipse or a part of a polygon, and the cross section is left-right symmetrical, and the second magnet 11 is a fully enclosed structure, such as a circular structure; the first magnet 10 and the second magnet 11 can be composed of a whole magnet or composed of multiple magnets spliced together;

[0047] It should be further explained that the first magnet 10 and the second magnet 11 can be permanent magnets, electromagnets or a combination of the two. If they are permanent magnets, their own magnetism can generate uniform radial repulsion to ensure that the rotating pump body 2 is stably suspended in the pump body 1. If they are electromagnets, the magnetic field strength can be controlled by adjusting the current size, and the radial repulsion can be flexibly adjusted to adapt to the suspension requirements under different working conditions. If they are a combination of permanent magnets and electromagnets, the basic repulsion can be provided by the permanent magnets, and dynamic fine adjustment can be performed by the electromagnets to further optimize the suspension stability and adaptability.

[0048] Working principle:

[0049] The pump shaft 5 drives the impeller 4 to rotate, the impeller 4 drives the liquid ring to rotate, the rotating liquid ring drives the rotating pump body 2 to rotate through friction, and the bearing 3 ensures that the rotating pump body 2 rotates stably, so that the liquid ring and the rotating pump body 2 remain relatively stationary, reducing friction and energy loss. The gap between the pump body 1 and the distributor 9 and the pump body side cover 6 is sealed to prevent leakage of the fluid in the pump and maintain stable working pressure. The gas to be pumped enters the pump through the inlet pipe 7, is compressed under the action of the impeller 4 and the liquid ring, and is discharged through the outlet pipe 8.

[0050] The first magnet 10 and the second magnet 11 repel each other to generate a suspension force, so that the rotating pump body 2 is suspended in the pump body 1, which can replace the bearing 3 or be used together with the bearing 3. The spokes 12 on the inner wall of the rotating pump body 2 are pushed when the liquid ring rotates, driving the rotating pump body 2 to rotate synchronously, reducing relative motion loss and friction heat.

[0051] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A rotatable pump body structure liquid ring vacuum pump comprising a pump body (1), an impeller (4), a pump shaft (5), a pump body side cover (6) and a distributor (9), characterized in that, The pump shaft (5) passes through the pump body (1), the distributor (9) and the impeller (4) in turn and is rotationally connected to the pump body side cover (6), the impeller (4) is fixedly installed on the pump shaft (5), the pump body (1) is internally provided with a bearing (3) and a rotating pump body (2) surrounding the impeller (4), the outer ring of the bearing (3) is fixedly connected to the inner wall of the pump body (1), and the inner ring of the bearing (3) is fixedly connected to the rotating pump body (2); The first magnet (10) is fixedly installed on the inner wall of the pump body (1), the second magnet (11) is fixedly installed on the outer wall of the rotating pump body (2), the same poles of the first magnet (10) and the second magnet (11) are arranged opposite to each other, and the first magnet (10) and the second magnet (11) are arranged between the two bearings (3); The position, where the rotating pump body (2) is connected to the distributor (9), is provided with a gap seal, and the position, where the rotating pump body (2) is connected to the pump body side cover (6), is also provided with a gap seal; The first magnet (10) is a semi-enclosing structure, and the second magnet (11) is a full-enclosing structure; The rotating pump body (2) is fixedly connected with a plurality of spoke (12) arranged in an annular array on the circumferential inner wall thereof; The length direction of the spoke (12) forms an included angle of 30°-90° with the tangent direction of the position of the rotating pump body (2) where the spoke (12) is located; The rotating pump body (2) is respectively provided with an end plate bushing (13) at two ends thereof; The pump shaft (5) drives the impeller (4) to rotate, the impeller (4) drives the liquid ring to rotate at a high speed, the rotating liquid ring drives the rotating pump body (2) to rotate through friction, and the liquid ring and the rotating pump body (2) are relatively static to reduce friction.

2. A liquid ring vacuum pump of the type having a rotatable pump body structure as defined in claim 1, characterized in that, The pump body side cover (6) is provided with an air inlet pipe (7) and an air outlet pipe (8).

3. A liquid ring vacuum pump of the type having a rotatable pump body structure as defined in claim 1, wherein The first magnet (10) and the second magnet (11) are composed of a whole magnet or a plurality of magnets spliced.

4. A liquid ring vacuum pump of the type having a rotatable pump body structure as defined in claim 1, wherein The first magnet (10) and the second magnet (11) are permanent magnets.

5. A liquid ring vacuum pump of the type having a rotatable pump body structure as defined in claim 1, wherein The first magnet (10) and the second magnet (11) are electromagnets.

6. A liquid ring vacuum pump of the type having a rotatable pump body structure as defined in claim 1, wherein, The first magnet (10) and the second magnet (11) are a combination of electromagnets and permanent magnets.

Images