Bearing plate for vacuum pump, vacuum pump with bearing plate and pumping device

Abstract

The utility model discloses a bearing plate for a vacuum pump, a vacuum pump with the bearing plate and a pumping device, the bearing plate comprises a plate body, the plate body comprises a bearing boss with a shaft hole and a fixing seat surrounding the bearing boss, the width of the bearing boss is larger than that of the fixing seat in the axial direction of the shaft hole, and the bearing boss is provided with a plurality of through holes; a containing groove surrounding the bearing boss is formed between the bearing boss and the fixing base on the side, protruding out of the fixing base, of the bearing boss. The first reinforcing rib is arranged at the corner of the containing groove and connected with the bearing boss and the fixing base. The second reinforcing ribs are arranged between the adjacent first reinforcing ribs in the circumferential direction of the bearing boss and connected with the bearing boss and the fixing base. According to the bearing plate for the vacuum pump disclosed by the embodiment of the utility model, light weight and high structural strength can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pumps, in particular to a bearing plate for a vacuum pump and a vacuum pump and a pumping device having the bearing plate. Background Art

[0002] The vacuum pump of the prior art is heavy and large in size, especially the oil tank located at the end of the vacuum pump. Since it is made of cast iron and is heavy, the fixing seat of the bearing cover plate connected to the oil tank needs to be set wider and heavier to be able to be firmly installed with the oil tank, which also leads to the problem of heavy mass and large size of the vacuum pump. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the utility model proposes a bearing plate for a vacuum pump, which can achieve light weight and high structural strength.

[0004] According to an embodiment of the utility model, a bearing plate for a vacuum pump includes: a plate body, the plate body includes a bearing boss with an axial hole and a fixing seat surrounding the bearing boss, in the axial direction along the axial hole, the width of the bearing boss is greater than the width of the fixing seat, and on the side where the bearing boss protrudes from the fixing seat, an accommodating groove surrounding the bearing boss is formed between the bearing boss and the fixing seat; a first reinforcing rib, the first reinforcing rib is arranged at the corner of the accommodating groove and is respectively connected to the bearing boss and the fixing seat; a second reinforcing rib, in the circumferential direction of the bearing boss, the second reinforcing rib is arranged between adjacent first reinforcing ribs and is respectively connected to the bearing boss and the fixing seat.

[0005] According to the bearing plate for a vacuum pump in the embodiment of the utility model, the thickness of the fixed seat is less than the thickness of the bearing boss, thereby achieving lightweight. Since the bearing boss protrudes from the fixed seat, the connection between the fixed seat and the bearing boss can be strengthened by arranging the first reinforcing rib and the second reinforcing rib, thereby improving the structural strength. Moreover, the first reinforcing rib is arranged at the corner to further enhance the structural strength of the bearing plate.

[0006] According to some embodiments of the present utility model, on a side where the bearing boss protrudes from the fixing seat, the first reinforcing rib is flush with an end surface of the fixing seat.

[0007] According to some embodiments of the present invention, in a cross section perpendicular to the axial direction of the shaft hole, a size of the first reinforcing rib gradually decreases in a direction from the fixing seat to the bearing boss.

[0008] Optionally, the first reinforcing rib is in a fan-ring shape in the projection of a plane perpendicular to the axial direction of the shaft hole.

[0009] According to some embodiments of the present invention, the first reinforcing ribs are provided at the four corners of the accommodating groove.

[0010] According to some embodiments of the utility model, there are two axial holes distributed side by side along the first direction, and the first reinforcing rib is connected between the outer side wall forming the axial hole and the fixing seat.

[0011] Optionally, in the first direction, at least two of the second reinforcing ribs are provided between adjacent first reinforcing ribs, and each of the axial holes corresponds to at least one of the second reinforcing ribs.

[0012] According to some embodiments of the present utility model, the bearing plate for the vacuum pump further includes a magnetic adsorption component, and the magnetic adsorption component is disposed in the accommodating groove.

[0013] The utility model also provides a vacuum pump, which comprises the bearing plate for the vacuum pump according to any of the above embodiments.

[0014] The vacuum pump according to the embodiment of the utility model can be lightweight and have guaranteed structural strength by providing the bearing plate for the vacuum pump according to the above embodiment.

[0015] The utility model also provides a pumping device.

[0016] The pumping device according to the embodiment of the utility model can be lightweight, reduce the risk of tipping and have good structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a front view of a bearing plate for a vacuum pump according to an embodiment of the utility model;

[0019] Figure 2 It is a left side view of a bearing plate for a vacuum pump according to an embodiment of the utility model;

[0020] Figure 3 A top view of a bearing plate for a vacuum pump according to an embodiment of the utility model;

[0021] Figure 4 A three-dimensional view of a bearing plate for a vacuum pump according to an embodiment of the utility model at one angle;

[0022] Figure 5 It is a three-dimensional view from another angle of the bearing plate for a vacuum pump according to an embodiment of the utility model;

[0023] Figure 6 It is a structural schematic diagram of a vacuum pump according to an embodiment of the utility model;

[0024] Figure 7 is a cross-sectional view of a vacuum pump according to an embodiment of the utility model;

[0025] Figure 8 It is a schematic structural diagram of a pumping device according to an embodiment of the utility model.

[0026] Reference numerals:

[0027] 100: Bearing plate for vacuum pump;

[0028] 1: Plate body, 11: Fixed seat, 12: Bearing boss, 13: Shaft hole, 14: Accommodating groove,

[0029] 15: Disassemble and install the card slot;

[0030] 2: The first reinforcement rib;

[0031] 3: The second reinforcement rib;

[0032] 200: vacuum pump, 20: oil tank; 300: foreline pump, 400: pumping device. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model 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. Therefore, it cannot be understood as a limitation on the present utility model.

[0037] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0038] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0039] A bearing plate 100 for a vacuum pump according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The bearing plate 100 can be lightweight and has high structural strength.

[0040] like Figure 1-Figure 5 As shown, a bearing plate 100 for a vacuum pump according to an embodiment of the utility model may include a plate body 1, a first reinforcing rib 2 and a second reinforcing rib 3, the plate body 1 including a bearing boss 12 having an axial hole 13 and a fixing seat 11 surrounding the bearing boss 12, in the axial direction along the axial hole 13, the width of the bearing boss 12 is greater than the width of the fixing seat 11, the bearing boss 12 protrudes from one side of the fixing seat 11 along the axial direction, and on the side where the bearing boss 12 protrudes from the fixing seat 11, an accommodating groove 14 surrounding the bearing boss 12 is formed between the bearing boss 12 and the fixing seat 11; the first reinforcing rib 2 is arranged at the corner of the accommodating groove 14 and is respectively connected to the bearing boss 12 and the fixing seat 11; in the circumferential direction along the bearing boss 12, the second reinforcing rib 3 is arranged between adjacent first reinforcing ribs 2 and is respectively connected to the bearing boss 12 and the fixing seat 11.

[0041] Specifically, the plate body 1 may include a bearing boss 12 and a fixing seat 11, and the bearing boss 12 has an axial hole 13 suitable for installing a rotating shaft and a bearing. Figure 1 As shown, there may be two shaft holes 13, and the two shaft holes 13 are arranged side by side. The fixing seat 11 is arranged around the bearing boss 12, and the fixing seat 11 can be used to fix with other components. The fixing seat 11 may be provided with a fixing hole, and the fixing seat 11 can be fixedly connected with other components by a fixing member passing through the fixing hole. Optionally, there may be multiple fixing holes, and the multiple fixing holes may be distributed at intervals around the circumference of the bearing boss 12. The multiple fixing holes can improve the fixing strength of the bearing plate 100 and other components.

[0042] In the vacuum pump of the prior art, the bearing plate can be connected to the oil tank and the pump casing of the vacuum pump. The oil tank is generally a cast iron part. In order to ensure the installation and assembly of the bearing plate and the oil tank, the bearing plate as a whole usually needs to be set to be thicker, that is, the overall thickness of the bearing plate is generally thicker and the overall plate thickness is uniform, such as the thickness of the part used for fixing and the part for forming the shaft hole are consistent; and in order to solve the problem of large volume and heavy mass of the vacuum pump in the related technology and achieve lightweight, the oil tank that cooperates with the bearing plate can be changed from a cast iron part to an aluminum part, thereby reducing the weight of the vacuum pump. In this way, as the weight of the oil tank is reduced, the width of the fixing seat of the bearing plate connected to the oil tank can also be set to be thinner, and lightweight can be further achieved. Specifically, in the bearing plate 100 for a vacuum pump of the utility model embodiment, on the axial hole 13 along the axial hole 13, the width of the bearing boss 12 is greater than the width of the fixing seat 11. In other words, the thickness of the fixing seat 11 in the circumferential direction of the axial hole 13 is less than the thickness of the bearing boss 12. In this way, by thinning the thickness of the fixing seat 11, the weight of the bearing plate 100 for the vacuum pump can be reduced, thereby achieving a lightweight effect.

[0043] Combination Figure 1-Figure 4 As shown, the bearing boss 12 protrudes from one side of the fixing seat 11 along the axial direction. In other words, the bearing boss 12 protrudes from one side of the fixing seat 11, and the other side of the bearing boss 12 may not exceed the other side of the fixing seat 11, thereby facilitating the installation and assembly of the bearing plate 100 used for the vacuum pump and other components. Figure 7 As shown, the fixing seat 11 can be connected to the pump housing of the vacuum pump 200 and the oil tank 20 , and the protruding side of the bearing boss 12 can be located in the oil tank 20 .

[0044] On the side where the bearing boss 12 protrudes from the fixed seat 11, a receiving groove 14 surrounding the bearing boss 12 is formed between the bearing boss 12 and the fixed seat 11, and the first reinforcing rib 2 and the second reinforcing rib 3 are located in the receiving groove 14, so that the receiving groove 14 is formed between the bearing boss 12 and the fixed seat 11, and the first reinforcing rib 2 and the second reinforcing rib 3 are arranged in the receiving groove 14, and are respectively connected to the fixed seat 11 and the bearing boss 12, which can also increase the connection area between the first reinforcing rib 2 and the second reinforcing rib and the fixed seat 11 and the bearing boss 12, thereby improving the structural strength.

[0045] Optionally, according to the embodiment of the utility model, the bearing plate 100 for the vacuum pump may further include a magnetic adsorption component (not shown in the figure), which may be arranged in the receiving groove 14 to adsorb impurities in the oil. In this way, the receiving groove 14 may also provide a receiving space for the magnetic adsorption component. At the same time, by setting the magnetic adsorption component, the effect of removing impurities in the oil can also be achieved.

[0046] like Figure 1 and Figure 4As shown, the first reinforcing rib 2 can be arranged at the corner of the accommodating groove 14, that is, the first reinforcing rib 2 is connected to the corner of the bearing boss 12 and the corresponding corner of the fixing seat 11. The bearing boss 12 and the fixing seat 11 have strong bearing capacity at the corner. The first reinforcing rib 2 is arranged at the corner of the accommodating groove 14, which can further strengthen the overall structural strength of the bearing plate 100 used for the vacuum pump.

[0047] like Figure 1 As shown, in the circumferential direction around the bearing boss 12, the second reinforcing ribs 3 are arranged between adjacent first reinforcing ribs 2 and are respectively connected to the bearing boss 12 and the fixing seat 11. The second reinforcing ribs 3 can further enhance the structural strength of the bearing plate 100 for the vacuum pump.

[0048] Therefore, according to the bearing plate 100 for a vacuum pump according to the embodiment of the utility model, the thickness of the fixed seat 11 is less than the thickness of the bearing boss 12, so that lightweight can be achieved. Since the bearing boss 12 protrudes from the fixed seat 11, the connection between the fixed seat 11 and the bearing boss 12 can be strengthened by providing the first reinforcing rib 2 and the second reinforcing rib 3, thereby improving the structural strength. Moreover, the first reinforcing rib 2 is provided at the corner to further enhance the structural strength of the bearing plate 100.

[0049] In some embodiments of the present invention, Figure 1-Figure 4 As shown, on the side where the bearing boss 12 protrudes from the fixed seat 11, the first reinforcing rib 2 is flush with the end face of the fixed seat 11, that is, the first reinforcing rib 2 is flush with the surface of the side of the fixed seat 11 protruded by the bearing boss 12, and the first reinforcing rib 2 is located in the accommodating groove 14 and does not exceed the fixed seat 11. Specifically, on the side where the bearing boss 12 protrudes from the fixed seat 11, the first reinforcing rib 2 can be connected to the fixed seat 11 and the bearing boss 12 and is flush with the side of the fixed seat 11 facing the protruding direction of the bearing boss 12, thereby facilitating the assembly of the bearing boss 12 with other components such as the oil tank 20 or the pump housing.

[0050] In some embodiments of the utility model, in the cross section perpendicular to the axial direction of the shaft hole 13, the size of the first reinforcing rib 2 gradually decreases from the fixing seat 11 to the bearing boss 12. Specifically, the connection area between the first reinforcing rib 2 and the fixing seat 11 is larger than the connection area between the first reinforcing rib 2 and the bearing boss 12. In the direction from the fixing seat 11 to the bearing boss 12, the cross-sectional area of ​​the first reinforcing rib 2 gradually decreases. Optionally, the projection of the first reinforcing rib 2 on the plane perpendicular to the axial direction of the shaft hole 13 is in the shape of a fan ring. Specifically, the location of the shaft hole 13 is a strong stress point. The connection between the first reinforcing rib 2 and the boss of the shaft hole 13 can correspond to the direction of the shaft hole 13. In this way, the first reinforcing rib 2 is in the shape of a fan ring, which can further ensure the structural strength of the bearing plate 100 used for the vacuum pump.

[0051] Optionally, first reinforcing ribs 2 may be provided at the four corners of the accommodating groove 14, and the plurality of first reinforcing ribs 2 are respectively connected to the four corners of the bearing boss 12, thereby further improving the structural strength of the bearing plate 100 for the vacuum pump.

[0052] In some embodiments of the utility model, there are two shaft holes 13 and they are arranged side by side along the first direction. The first reinforcing rib 2 is connected between the outer wall forming the shaft hole 13 and the fixing seat 11. In this way, the first reinforcing rib 2 is correspondingly connected between the shaft hole 13 and the fixing seat 11. The shaft hole 13 is located at a strong stress point. The first reinforcing rib 2 connects the outer wall of the shaft hole 13 and the fixing seat 11, which can further improve the structural strength of the bearing plate 100. Figure 1 and Figure 4 In the example shown, each axial hole 13 may correspond to two first reinforcing ribs 2 , and each of the first reinforcing ribs 2 is formed in a fan-shaped ring.

[0053] Optionally, in the first direction, at least two second reinforcing ribs 3 are provided between adjacent first reinforcing ribs 2, and each axial hole 13 corresponds to at least one second reinforcing rib 3. Specifically, Figure 1 As shown, there are two axial holes 13 and they are arranged side by side and spaced apart along the first direction. There can be multiple first reinforcing ribs 2 and second reinforcing ribs 3. In the first direction, at least two first reinforcing ribs 2 can be arranged between adjacent first reinforcing ribs 2, that is, in the first direction, two, three or more second reinforcing ribs 3 can be arranged between two adjacent first reinforcing ribs 2. In this way, the outer wall of each axial hole 13 can be connected to at least one second reinforcing rib 3, and each axial hole 13 can correspond to at least one first reinforcing rib 2 and one second reinforcing rib 3, which can further improve the structural strength.

[0054] In some specific examples of the present invention, Figure 1 and Figure 4 As shown, in the first direction, two second reinforcing ribs 3 may be provided between adjacent first reinforcing ribs 2, and the two first reinforcing ribs 2 correspond to the two axial holes 13 respectively. Optionally, the first reinforcing ribs 2 may correspond to the central axis of the axial hole 13; in the direction perpendicular to the first direction, at least one second reinforcing rib 3 is provided between adjacent first reinforcing ribs 2 and corresponds to the position of the axial hole 13, and the second reinforcing rib 3 may be vertically connected between the fixing seat 11 and the bearing boss 12, thereby a plurality of reinforcing rib structures may be provided in the circumference of each axial hole 13, thereby further ensuring the structural strength of the bearing plate 100 for the vacuum pump.

[0055] Optionally, combined Figure 3-Figure 4 As shown, both ends of the fixing seat 11 along the first direction are provided with disassembly and assembly slots 15, and the disassembly and assembly slots 15 can be used for connecting with other components.

[0056] See below Figure 1-Figure 5 A bearing plate 100 for a vacuum pump according to a specific embodiment of the present invention is described.

[0057] like Figure 1 , Figure 4 and Figure 5 As shown, according to an embodiment of the utility model, a bearing plate 100 for a vacuum pump may include a bearing boss 12, a fixing seat 11, a plurality of first reinforcing ribs 2 and a second reinforcing rib 3 and a magnetic adsorption member. Specifically, the bearing boss 12 has an axial hole 13 that passes through the bearing plate 100. In the axial direction along the axial hole 13, the width of the bearing boss 12 is greater than the width of the fixing seat 11, that is, the thickness of the fixing seat 11 can be set thinner, thereby achieving a lightweight effect of the bearing plate 100, wherein the thickness of the bearing boss 12 protruding from the fixing seat 11 can be less than the thickness of the fixing seat 11, thereby ensuring the overall structural stability of the bearing plate 100.

[0058] The fixing seat 11 is arranged around the bearing boss 12 and a receiving groove 14 is formed between the fixing seat 11 and the bearing boss 12. The first reinforcing rib 2, the second reinforcing rib 3 and the magnetic adsorption component are all arranged in the receiving groove 14, wherein the magnetic adsorption component can be used to adsorb impurities in the oil.

[0059] Both the first reinforcing rib 2 and the second reinforcing rib 3 can be multiple, the first reinforcing rib 2 can be four and are correspondingly arranged at the corner where the fixing seat 11 and the bearing boss 12 are connected, there can be two axial holes 13 and they are distributed side by side along the first direction, and along the first direction, a plurality of second reinforcing ribs 3 can be arranged between adjacent first reinforcing ribs 2, and each axial hole 13 can correspond to at least one second reinforcing rib 3, and in the direction perpendicular to the first direction, at least one second reinforcing rib 3 is arranged between adjacent first reinforcing ribs 2, so that each axial hole 13 can correspond to two first reinforcing ribs 2 and a plurality of second reinforcing ribs 3, wherein the second reinforcing rib 3 can be vertically connected between the bearing boss 12 and the fixing seat 11.

[0060] Therefore, the bearing plate 100 for a vacuum pump according to the embodiment of the utility model can achieve a lightweight effect and ensure structural strength.

[0061] The utility model also provides a vacuum pump 200. The vacuum pump 200 comprises the bearing plate 100 for a vacuum pump according to any of the above embodiments.

[0062] like Figure 6-Figure 7 As shown, the vacuum pump 200 also includes an oil tank 20 and a pump casing. The bearing plate 100 can be connected to the oil tank 20 and the pump casing. Optionally, the oil tank 20 can be an aluminum part, so as to achieve a lightweight effect. The part of the bearing boss 12 of the bearing plate 100 that protrudes from the fixed seat 11 can be located in the oil tank 20.

[0063] According to the vacuum pump 200 of the embodiment of the present invention, by providing the bearing plate 100 for the vacuum pump of the above embodiment, it is possible to achieve lightness and ensure structural strength.

[0064] The utility model also proposes a pumping device 400 .

[0065] The pumping device 400 according to the embodiment of the present invention comprises the vacuum pump 200 of the above embodiment, such as Figure 8 As shown, the pumping device 400 also includes a front pump 300 located below the vacuum pump 200, the exhaust port of the vacuum pump 200 is connected to the air inlet of the front pump 300, and the vacuum pump 200 is arranged above the front pump 300. The mass of the vacuum pump 200 is relatively large. When there is a deviation between the center of gravity of the vacuum pump 200 and the front pump 300, the vacuum pump located above is heavier and prone to tipping risk. The vacuum pump 200 of the above embodiment has a small mass and a strong structure, thereby reducing the tipping risk of the pumping device 400 caused by the shift of the center of gravity. Therefore, the pumping device 400 of the utility model embodiment can be lightweight, with a low tipping risk and a strong structural strength.

[0066] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the invention should be based on the protection scope of the claims.

Claims

1. A bearing plate for a vacuum pump, characterized in that: include: A plate body, the plate body comprising a bearing boss having an axial hole and a fixing seat surrounding the bearing boss, wherein in the axial direction along the axial hole, the width of the bearing boss is greater than the width of the fixing seat, and an accommodating groove surrounding the bearing boss is formed between the bearing boss and the fixing seat on a side where the bearing boss protrudes from the fixing seat; A first reinforcing rib, which is disposed at a corner of the accommodating groove and is respectively connected to the bearing boss and the fixing seat; The second reinforcing rib is arranged between adjacent first reinforcing ribs along the circumference of the bearing boss and is respectively connected to the bearing boss and the fixing seat.

2. The bearing plate for a vacuum pump according to claim 1, characterized in that: On a side where the bearing boss protrudes from the fixing seat, the first reinforcing rib is flush with an end surface of the fixing seat.

3. The bearing plate for a vacuum pump according to claim 1, characterized in that: In a cross section perpendicular to the axial direction of the shaft hole, a size of the first reinforcing rib gradually decreases in a direction from the fixing seat to the bearing boss.

4. The bearing plate for a vacuum pump according to claim 3, characterized in that: The projection of the first reinforcing rib on a plane perpendicular to the axial direction of the shaft hole is in a fan ring shape.

5. The bearing plate for a vacuum pump according to claim 1, characterized in that: The first reinforcing ribs are arranged at the four corners of the accommodating groove.

6. The bearing plate for a vacuum pump according to claim 1, characterized in that: There are two axial holes which are distributed side by side along the first direction, and the first reinforcing rib is connected between the outer side wall forming the axial hole and the fixing seat.

7. The bearing plate for a vacuum pump according to claim 6, characterized in that: In the first direction, at least two of the second reinforcing ribs are arranged between adjacent first reinforcing ribs, and each of the axial holes corresponds to at least one of the second reinforcing ribs.

8. The bearing plate for a vacuum pump according to claim 1, characterized in that: It also includes a magnetic adsorption component, which is arranged in the accommodating groove.

9. A vacuum pump, characterized in that: A bearing plate for a vacuum pump comprising any one of claims 1-8.

10. A pumping device, characterized in that: Comprising the vacuum pump as claimed in claim 9.

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