Pump body bearing mounting plate with cooling function

Abstract

The utility model discloses a pump body bearing mounting plate with a cooling function, which comprises a mounting plate main body, a bearing mounting hole is arranged in the middle of the mounting plate main body, and the pump body bearing mounting plate is characterized in that a mounting cavity is arranged at the bottom of the mounting plate main body, and the top of the mounting cavity is arranged close to the bearing mounting hole; the two sides of the top of the mounting plate body are each provided with a through hole, the bottoms of the through holes communicate with the mounting cavity, and the two through holes are formed in the two sides of the bearing mounting hole correspondingly. A bearing cooler is mounted in the mounting cavity, and the top and the side part of the bearing cooler abut against the top surface and the side wall of the mounting cavity respectively; a cooling cavity is formed in the bearing cooler, cooling pipes communicated with the cooling cavity are arranged on the two sides of the top of the bearing cooler respectively, and the top of each cooling pipe penetrates through one through hole and is arranged above the through hole. According to the utility model, the cooling effect is improved, the service life is prolonged, and the maintenance rate is reduced.

Description

Technical Field

[0001] The utility model relates to a bearing installation structure, in particular to a pump body bearing installation plate with cooling, which is mainly used for the bearing installation of a vacuum pump. Background Art

[0002] The vacuum pump is mainly used for vacuuming. Among them, the Roots vacuum pump uses a motor to drive the two shafts to rotate, and the Roots pump rotors that mesh with each other on the two shafts are used to achieve vacuuming. The screw pump uses a motor to drive the two shafts to rotate, and the screw pump rotors that mesh with each other on the two shafts are used to achieve vacuuming. Among them, in order to ensure the smoothness and stability of the rotation of the shaft and the pump body, a bearing will be set between the shaft and the pump body to achieve the normal rotation of the shaft. However, since the bearing is an important component for supporting the shaft, when the shaft works for a long time, it will generate a lot of heat, and when the vacuum pump is working, the vacuum pump will also generate high temperature inside, and the high temperature will be transmitted to the bearing through the shaft and the body. The bearing is affected by the high temperature and is prone to micro-deformation. If it is slightly deformed, there will be problems with the matching clearance between the two Roots pump rotors or the two screw pump rotors, and problems such as stuck teeth and wear will occur. In the conventional method, since the pump body is an integrally cast structure, a cavity is set on the pump body where the bearing is installed, and the cavity is outside the bearing to accelerate its heat dissipation. However, this structure has the following shortcomings:

[0003] 1. It will destroy the strength of the pump body at the bearing. Since the pump body at the bearing needs to bear a large supporting force, this will lead to insufficient pressure bearing capacity at this location. Over time, the pump body is prone to deformation, which will also affect the service life and stability of the vacuum pump;

[0004] 2. The cavity is usually in direct contact with the outside air, and the cooling effect is poor. Summary of the invention

[0005] The utility model aims to provide a pump body bearing mounting plate with cooling. By using the structure, the service life of the bearing can be effectively extended, the maintenance rate can be reduced, and the use effect of the vacuum pump can be further guaranteed.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a pump body bearing mounting plate with cooling, comprising a mounting plate body, a bearing mounting hole in the middle of the mounting plate body, a mounting cavity at the bottom of the mounting plate body, and a top of the mounting cavity is arranged close to the bearing mounting hole; a through hole is respectively arranged on both sides of the top of the mounting plate body, the bottom of the through hole is connected to the mounting cavity, and two through holes are respectively arranged on both sides of the bearing mounting hole;

[0007] A bearing cooler is installed in the installation cavity, and the top and side of the bearing cooler are respectively against the top surface and the side wall of the installation cavity;

[0008] A cooling cavity is provided in the bearing cooler, and cooling pipes communicating with the cooling cavity are respectively provided on both sides of the top of the bearing cooler. The top of each cooling pipe passes through one of the through holes and is arranged above the through hole.

[0009] In the above technical solution, one end of the bearing cooler is provided with a threaded opening communicating with the cooling cavity, and a plug for blocking the threaded opening is detachably mounted on the threaded opening.

[0010] In the above technical solution, the through hole is arranged close to the side of the bearing mounting hole.

[0011] In the above technical solution, the outer wall of the cooling tube is in contact with the inner wall of the through hole;

[0012] And / or, the cooling tube is made of a heat-conducting material;

[0013] And / or, the two cooling pipes are respectively a liquid inlet pipe and a liquid outlet pipe.

[0014] In the above technical solution, the bearing cooler is a square structure;

[0015] And / or, at least one bolt is further provided to limit the bearing cooler in the mounting cavity, and the bolt is respectively connected to the bearing cooler and the mounting plate body.

[0016] In the above technical solution, connecting holes communicating with the cooling cavity are respectively provided on both sides of the top of the bearing cooler, and the bottom of each cooling tube is connected to one of the connecting holes.

[0017] In the above technical solution, a sealing ring accommodating groove is provided at the top of each connecting hole, the diameter of the sealing ring accommodating groove is larger than the diameter of the connecting hole, an elastic sealing ring is installed in the sealing ring accommodating groove, and the elastic sealing ring is sleeved on the outside of the cooling pipe.

[0018] In the above technical solution, the bottom of the elastic sealing ring abuts against the bottom surface of the sealing ring accommodating groove, and the top of the elastic sealing ring abuts against the top surface of the installation cavity;

[0019] And / or, the inner surface of the elastic sealing ring is tightly matched with the outer surface of the cooling pipe, and the outer surface of the elastic sealing ring is tightly matched with the inner surface of the sealing ring accommodating groove.

[0020] In the above technical solution, the two sides of the top of the bearing cooler are respectively provided with extension blocks extending upward, and each of the connecting holes is arranged on the top surface of one of the extension blocks;

[0021] And / or, upwardly extending clearance cavities are respectively provided on both sides of the top of the installation cavity, each of the extension blocks is inserted into one of the clearance cavities, and the outer surface of the extension block abuts against the inner wall of the corresponding clearance cavity.

[0022] In the above technical solution, the bottom of the cooling pipe is screwed to the connecting hole;

[0023] Alternatively, the bottom of the cooling pipe is connected to the connecting hole via a quick connector.

[0024] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0025] 1. In the utility model, a mounting cavity is directly arranged on the mounting plate body below the bearing mounting hole, a bearing cooler is arranged in the mounting cavity, a flowing cooling medium is fed into the cooling cavity in the bearing cooler through a cooling pipe, and the bearing cooler contacts the inner wall of the mounting cavity, thereby rapidly cooling the mounting plate body and the bearing, effectively extending the service life and use stability of the vacuum pump and reducing the maintenance rate;

[0026] 2. The cooling pipe in the utility model is made of heat-conducting material, and contacts the mounting plate body through the through hole. When the cooling medium flows in the cooling pipe, it can also accelerate the heat removal and heat dissipation of the mounting plate body and the bearing, thereby improving the heat dissipation effect;

[0027] 3. The through hole in the utility model is arranged close to the bearing mounting hole, which can improve the heat dissipation efficiency of the bearing;

[0028] 4. In the utility model, the bearing cooler is connected to the mounting plate body by bolts, which facilitates the quick installation, disassembly and maintenance of the bearing cooler;

[0029] 5. The utility model is also provided with an elastic sealing ring, and the mounting cavity is against the elastic sealing ring, which can effectively ensure the sealing effect between the cooling pipe and the bearing cooler and prevent the occurrence of liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic cross-sectional view of the structure of the first embodiment of the present utility model;

[0031] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure;

[0032] Figure 3 This is a schematic diagram of the end structure of the bearing cooler in the first embodiment of the utility model (with the cooling pipe installed);

[0033] Figure 4This is a schematic cross-sectional structural diagram of a bearing cooler in Embodiment 1 of the present utility model (with the cooling pipe installed);

[0034] Figure 5 yes Figure 4 Schematic diagram of the three-dimensional structure.

[0035] Among them: 1. Mounting plate body; 2. Bearing mounting hole; 3. Mounting cavity; 4. Through hole; 5. Bearing cooler; 6. Cooling cavity; 7. Cooling pipe; 8. Screw mouth; 9. Guide hole; 10. Connecting hole; 11. Sealing ring receiving groove; 12. Elastic sealing ring; 13. Extension block; 14. Make way cavity; DETAILED DESCRIPTION

[0036] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0037] Example 1: See Figures 1 to 5 As shown, a pump bearing mounting plate with cooling comprises a mounting plate body 1, wherein the middle of the mounting plate body 1 has a bearing mounting hole 2, a mounting cavity 3 is provided at the bottom of the mounting plate body 1, and the top of the mounting cavity 3 is arranged close to the bearing mounting hole 2; a through hole 4 is respectively provided on both sides of the top of the mounting plate body 1, the bottom of the through hole 4 is connected to the mounting cavity 3, and two through holes 4 are respectively arranged on both sides of the bearing mounting hole 2;

[0038] A bearing cooler 5 is installed in the installation cavity 3, and the top and side of the bearing cooler 5 are respectively against the top surface and the side wall of the installation cavity 3;

[0039] A cooling cavity 6 is provided in the bearing cooler 5 , and cooling pipes 7 connected to the cooling cavity 6 are provided on both sides of the top of the bearing cooler 5 , respectively. The top of each cooling pipe 7 passes through one of the through holes 4 and is arranged above the through hole 4 .

[0040] In this embodiment, the two cooling pipes are respectively a liquid inlet pipe and a liquid outlet pipe, the top of the liquid inlet pipe is connected to the liquid supply device, the cooling medium is provided through the liquid supply device, and the cooling medium enters the cooling cavity of the bearing cooler through the liquid inlet pipe, and then is sent out from the liquid outlet pipe, refluxes to the reflux device or refluxes to the liquid supply device for re-cooling. In this process, the cooling medium will cool down the two cooling pipes and the bearing cooler. In this embodiment, the mounting plate body is made of metal, and the high temperature generated during the operation of the bearing will be directly transferred to the mounting plate body. Since the top and side of the bearing cooler are respectively against the top surface and side wall of the mounting cavity, the low temperature of the bearing cooler will take away the heat on the mounting plate body, thereby cooling the mounting plate body. At the same time, after the temperature of the mounting plate body drops, the high temperature generated by the operation of the bearing can also be reduced, thereby cooling the bearing. At the same time, since the top of the mounting cavity is arranged close to the bearing mounting hole, that is, the bearing cooler is arranged close to the bearing, it can lower the mounting plate body and the mounting plate body at the bearing at the fastest speed, that is, cool the bearing at the fastest speed, thereby extending the service life of the bearing, reducing the maintenance rate, and ensuring the stability and service life of the vacuum pump.

[0041] See also Figure 1 , 2 As shown in Figures 4 and 5, one end of the bearing cooler 5 is provided with a threaded port 8 connected to the cooling cavity 6, and a plug for blocking the threaded port 8 is detachably mounted on the threaded port 8 (the plug is not shown in the figure).

[0042] In this embodiment, the bearing cooler is a square structure; in this way, the contact area between the bearing cooler and the mounting plate body is larger, which improves the cooling effect on the bearing and is also easy to process. Preferably, the bearing cooler is a rectangular parallelepiped structure, and a block of metal with a rectangular parallelepiped structure can be directly used for rapid processing. Among them, one end of the cooling cavity is connected to one end of the bearing cooler, which is convenient for processing the cooling cavity. When processing the cooling cavity, a milling cutter or other tool is directly used to process from the end of the bearing cooler toward the inside of the bearing cooler to form a cooling cavity. After the processing is completed, the end of the cooling cavity is processed into a screw mouth, which is convenient for the tool to process the cooling cavity. In order to block the end of the cooling cavity, a detachable plug is installed in the screw mouth, so that only the cooling pipe can be connected to the cooling cavity, so that the cooling medium can flow in the cooling cavity and the two cooling pipes, so that the bearing cooler can cool and reduce the temperature of the mounting plate body and the bearing.

[0043] See also Figure 1 , 2 As shown, the through hole 4 is arranged near the side of the bearing mounting hole 2. The outer wall of the cooling tube is in contact with the inner wall of the through hole; the cooling tube is made of heat-conducting material.

[0044] In this embodiment, there are two bearing mounting holes, and the two bearing mounting holes are arranged at intervals in a horizontal direction, so that they can be used for the installation of two rotating shafts, and at the same time, it is convenient for the engagement of the Roots pump rotor or the screw pump rotor on the two rotating shafts. In this embodiment, two cooling pipes are respectively located beside a bearing mounting hole, and are arranged close to the corresponding bearing mounting hole. Taking the illustrated direction as an example, the cooling pipe on the left side is arranged on the left side of the bearing mounting hole on the left side, and is arranged close to the bearing mounting hole on the left side, and the cooling pipe on the right side is arranged on the right side of the bearing mounting hole on the right side, and is arranged close to the bearing mounting hole on the right side. At the same time, the outer wall of the cooling pipe and the inner wall of the through hole are fitted, and the cooling pipe is a heat-conducting material. In this way, when the cooling medium flows through the cooling pipe, the cooling medium will pass through the cooling pipe and simultaneously exchange heat with the mounting plate body, thereby realizing cooling of the mounting plate body. At the same time, close to the bearing mounting hole, the bearing can also be quickly cooled, thereby improving the cooling efficiency and cooling effect.

[0045] There is also at least one bolt (not shown in the bolt figure) for limiting the bearing cooler 5 in the mounting cavity 3, and the bolt is connected to the bearing cooler and the mounting plate body respectively.

[0046] In this embodiment, four bolts are provided, two bolts are close to one cooling pipe, and the other two bolts are close to another cooling pipe. Four top screw holes are provided on the top surface of the installation cavity, and four guide holes 9 or bottom screw holes are provided on the bearing cooler. It is preferred to directly provide four guide holes on the bearing cooler for convenient processing. The top of the bolt passes through the corresponding guide hole and the corresponding screw hole for screw connection to achieve the connection and fixation of the bearing cooler and the mounting plate body. Among them, the two guide holes on the left side and the two on the right side are respectively located on the front and rear sides of the cooling cavity (taking the direction shown in the figure as an example), so that the cooling cavity will not be damaged, and the connection is strong and firm.

[0047] See also Figures 1 to 5 As shown, connection holes 10 communicating with the cooling cavity 6 are respectively provided on both sides of the top of the bearing cooler 5 , and the bottom of each cooling tube 7 is connected to one of the connection holes 10 .

[0048] In this embodiment, the connection hole is provided for connecting the cooling pipe and the bearing cooler, so that the cooling medium transported by one cooling pipe can be delivered into the cooling cavity and then delivered from another connection hole and cooling pipe, thereby realizing the flow of the cooling medium and facilitating the cooling of the bearing.

[0049] See also Figures 1 to 5As shown, a sealing ring accommodating groove 11 is provided at the top of each connecting hole 10, the diameter of the sealing ring accommodating groove 11 is larger than the diameter of the connecting hole 10, an elastic sealing ring 12 is installed in the sealing ring accommodating groove 11, and the elastic sealing ring 11 is sleeved on the outside of the cooling pipe 7.

[0050] In this embodiment, in order to ensure the sealing of the connection between the cooling pipe and the connecting hole, an elastic sealing ring is provided to further ensure the sealing effect of the connection between the cooling pipe and the connecting hole, and effectively prevent leakage between the connecting hole and the cooling pipe. The setting of the elastic sealing ring installation groove can make the elastic sealing ring in the bearing cooler without occupying the space at the top of the bearing cooler, so that the top of the bearing cooler can contact the top surface of the installation cavity, thereby ensuring the cooling effect of the bearing cooler on the bearing.

[0051] See also Figures 1 to 5 As shown, the bottom of the elastic sealing ring 12 abuts against the bottom surface of the sealing ring accommodating groove 11, and the top of the elastic sealing ring 12 abuts against the top surface of the installation cavity 3;

[0052] The inner surface of the elastic sealing ring 12 is tightly matched with the outer surface of the cooling pipe 7 , and the outer surface of the elastic sealing ring 12 is tightly matched with the inner surface of the sealing ring accommodating groove 11 .

[0053] In this embodiment, the inner diameter of the elastic sealing ring is smaller than the outer diameter of the cooling tube, the outer diameter of the elastic sealing ring is smaller than the inner diameter of the sealing ring receiving groove, and the thickness of the elastic sealing ring is greater than the depth of the sealing ring receiving groove. Therefore, when the cooling tube and the connecting hole are connected, the cooling tube will expand the inner diameter of the elastic sealing ring, so that the inner wall of the cooling tube and the elastic sealing ring are tightly matched to achieve a sealing effect, and the outer surface of the elastic sealing ring is tightly matched with the inner wall of the sealing ring receiving groove, so that the sealing effect between the cooling cavity and the connecting hole is good, and liquid leakage is prevented. Further, when the bearing cooler is locked by bolts and the mounting plate body, the elastic sealing ring is squeezed from the thickness direction, so that the inner surface of the elastic sealing ring is further tightly matched with the outer surface of the cooling tube, and the outer surface of the elastic sealing ring is tightly matched with the inner surface of the sealing ring receiving groove, so as to prevent liquid leakage. In addition, due to the squeezing of the elastic sealing ring, the bottom of the cooling tube and the connecting hole can be limited to achieve a locking connection between the cooling tube and the bearing cooler.

[0054] See also Figures 1 to 5 As shown, the two sides of the top of the bearing cooler 5 are respectively provided with extension blocks 13 extending upward, and each of the connecting holes 10 is arranged on the top surface of one of the extension blocks 13;

[0055] The top sides of the installation cavity 3 are respectively provided with upwardly extending clearance cavities 14 , each of the extension blocks 13 is inserted into one of the clearance cavities 14 , and the outer surface of the extension block 13 abuts against the inner wall of the corresponding clearance cavity 14 .

[0056] The arrangement of the extension block and the clearance cavity can further increase the contact area between the bearing cooler and the mounting plate body, improve the heat exchange effect, and improve the cooling efficiency and quality of the bearing. The top of the guide hole and the connecting hole on the corresponding side is connected to the top surface of the extension block on the corresponding side.

[0057] In another embodiment, the bottom of the cooling pipe is threadedly connected to the connecting hole, thereby realizing the connection between the cooling pipe and the bearing cooler, wherein the inner surface of the connecting hole has an internal thread, and the outer surface of the bottom of the cooling pipe has an external thread, and the connecting hole and the cooling pipe are threadedly connected to ensure the installation stability and quality of the cooling pipe and the bearing cooler. A raw tape is set between the cooling pipe and the connecting hole to prevent leakage.

[0058] In another embodiment, the bottom of the cooling pipe is connected to the connection hole via a quick connector. The quick connector is directly fixed on the connection hole, and the cooling pipe is directly and quickly plugged into the quick connector to achieve a quick connection between the two.

[0059] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0060] In the present utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral one; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, for example, the two can form a mechanical abutment or abutment connection through abutment, contact, etc., the two can also be directly hung or hung through an intermediate medium, etc., or it can be the internal connection of the two elements or the interaction relationship between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A pump bearing mounting plate with cooling, comprising a mounting plate body, wherein the middle of the mounting plate body has a bearing mounting hole, characterized in that: A mounting cavity is provided at the bottom of the mounting plate body, and the top of the mounting cavity is arranged close to the bearing mounting hole; a through hole is respectively provided on both sides of the top of the mounting plate body, the bottom of the through hole is connected to the mounting cavity, and the two through holes are respectively arranged on both sides of the bearing mounting hole; A bearing cooler is installed in the installation cavity, and the top and side of the bearing cooler are respectively against the top surface and the side wall of the installation cavity; A cooling cavity is provided in the bearing cooler, and cooling pipes communicating with the cooling cavity are respectively provided on both sides of the top of the bearing cooler. The top of each cooling pipe passes through one of the through holes and is arranged above the through hole.

2. The pump bearing mounting plate with cooling according to claim 1, characterized in that: One end of the bearing cooler is provided with a threaded opening communicated with the cooling cavity, and a plug for blocking the threaded opening is detachably mounted on the threaded opening.

3. The pump bearing mounting plate with cooling according to claim 1, characterized in that: The through hole is arranged close to the side of the bearing mounting hole.

4. The pump bearing mounting plate with cooling according to claim 1, characterized in that: The outer wall of the cooling tube is in contact with the inner wall of the through hole; And / or, the cooling tube is made of a heat-conducting material; And / or, the two cooling pipes are respectively a liquid inlet pipe and a liquid outlet pipe.

5. The pump bearing mounting plate with cooling according to claim 1, characterized in that: The bearing cooler is a square structure; And / or, at least one bolt is further provided to limit the bearing cooler in the mounting cavity, and the bolt is respectively connected to the bearing cooler and the mounting plate body.

6. The pump bearing mounting plate with cooling according to claim 1, characterized in that: Both sides of the top of the bearing cooler are respectively provided with connection holes communicating with the cooling cavity, and the bottom of each cooling pipe is connected to one of the connection holes.

7. The pump bearing mounting plate with cooling according to claim 6, characterized in that: A sealing ring accommodating groove is provided at the top of each connecting hole, the diameter of the sealing ring accommodating groove is larger than the diameter of the connecting hole, an elastic sealing ring is installed in the sealing ring accommodating groove, and the elastic sealing ring is sleeved on the outside of the cooling pipe.

8. The pump bearing mounting plate with cooling according to claim 7, characterized in that: The bottom of the elastic sealing ring abuts against the bottom surface of the sealing ring accommodating groove, and the top of the elastic sealing ring abuts against the top surface of the installation cavity; And / or, the inner surface of the elastic sealing ring is tightly matched with the outer surface of the cooling pipe, and the outer surface of the elastic sealing ring is tightly matched with the inner surface of the sealing ring accommodating groove.

9. The pump bearing mounting plate with cooling according to claim 6, characterized in that: Extension blocks extending upward are respectively provided on both sides of the top of the bearing cooler, and each of the connection holes is provided on the top surface of one of the extension blocks; And / or, upwardly extending clearance cavities are respectively provided on both sides of the top of the installation cavity, each of the extension blocks is inserted into one of the clearance cavities, and the outer surface of the extension block abuts against the inner wall of the corresponding clearance cavity.

10. The pump bearing mounting plate with cooling according to claim 6, characterized in that: The bottom of the cooling pipe is screwed to the connecting hole; Alternatively, the bottom of the cooling pipe is connected to the connecting hole via a quick connector.

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