Bearing seat and screw pump

Abstract

The utility model relates to the field of screw pumps, and discloses a bearing seat and a screw pump. According to the bearing seat, a main body is provided with two liquid inlets; the flange is arranged on one side of the main body; the flange is provided with a first bolt hole and a pressure-bearing structure; the pressure bearing structure comprises an O-shaped ring groove and / or a second bolt hole; the O-shaped ring groove is used for reducing the contact area when liquid enters the bearing seat, and the O-shaped ring groove is configured to surround the second bolt hole and / or the liquid inlet; the second bolt holes are configured to be formed in the two sides of the two liquid inlets. A group of second bolt holes and a group of O-shaped ring grooves surrounding the second bolt holes or the liquid inlet are additionally arranged on the flange of the bearing seat provided by the utility model. According to the utility model, the original mounting sizes of the pump body and the bearing seat are kept unchanged, the pre-tightening force between the pump body and the bearing seat is obviously increased, and higher inlet pressure can be borne, so that the standardized work of products is facilitated, the product cost is reduced, and the production period is shortened.

Description

Technical Field

[0001] The utility model relates to the field of screw pumps, in particular to a bearing seat and a screw pump. Background Art

[0002] The inlet pressure of a traditional liquid delivery pump is generally below 0.6MPa. When the inlet pressure is higher than 0.6MPa, the strength of the pump inlet flange plate will increase. Figure 1 and Figure 2 As shown, when the pump inlet pressure is higher than 0.6MPa, it is necessary to increase the thickness of the flange plate 02 on the pump body 01, the thickness of the flange plate 04 on the bearing seat 03, and the diameter or number of the connecting bolt group 05. However, this will not only change the original installation size of the pump, but also increase the product cost and is not conducive to product standardization. Utility Model Content

[0003] The utility model aims to provide a bearing seat and a screw pump, so as to solve the problem of low inlet pressure of the existing bearing seat.

[0004] In order to solve the above technical problems, the embodiment of the utility model provides a bearing seat, comprising:

[0005] A main body, wherein the main body is provided with two liquid inlets;

[0006] A flange is arranged on one side of the main body;

[0007] Wherein, the flange is provided with a first bolt hole and a pressure-bearing structure;

[0008] The pressure-bearing structure includes an O-ring groove and / or a second bolt hole;

[0009] The O-ring groove is used to reduce the contact area when liquid enters the bearing seat, and the O-ring groove is configured to surround the second bolt hole and / or the liquid inlet;

[0010] The second bolt holes are configured to be disposed on both sides of the two liquid inlets.

[0011] Compared with the traditional bearing seat, the flange of the bearing seat connection end provided by the utility model adds a set of second bolt holes and a set of O-ring grooves around the second bolt holes or the liquid inlet. The utility model not only maintains the original installation dimensions of the pump body and the bearing seat unchanged, but also facilitates product standardization, reduces product costs, and shortens production cycles. By adding the second bolt hole, the connection preload between the pump body and the bearing seat is generated by two sets of bolts, whose positions correspond to the first bolt hole and the second bolt hole, respectively. Therefore, the preload between the pump body and the bearing seat is significantly increased, and it can withstand higher inlet pressure.

[0012] In addition, the positions and numbers of the first bolt holes and the second bolt holes are not fixed and can be determined according to the size of the inlet pressure of the pump.

[0013] Compared with the traditional bearing seat, the flange at the connecting end of the bearing seat provided by the utility model has two O-ring grooves added. The O-ring grooves isolate the pump inlet liquid from entering this part of the area. Therefore, the end area that the inlet liquid can contact will be greatly reduced, and the end surface pressure F generated by the liquid is F=P*S (P is the inlet pressure, and S is the end area of ​​the inlet liquid seal). In this way, F remains unchanged (that is, the thickness of the original connecting flange plate of the bearing seat is kept unchanged, and the bolt group is kept unchanged), S is reduced (the sealing area of ​​the O-ring groove is reduced), and it can withstand a higher inlet pressure P.

[0014] In addition, the O-ring groove and the second bolt hole may be provided at the same time or at different times, and the choice may be made according to the usage scenario.

[0015] In addition, the O-ring groove is in an "8" shape or a gourd shape surrounding the two liquid inlets.

[0016] In addition, two O-ring grooves are provided, and each O-ring groove is an annular structure surrounding the second bolt hole.

[0017] In addition, two O-ring grooves are provided, and each O-ring groove is a bat-shaped structure surrounding the second bolt hole.

[0018] In addition, the O-ring grooves are symmetrically distributed up and down along the horizontal plane.

[0019] In addition, the O-ring groove can be set to various shapes as long as it can reduce the area of ​​the pump inlet liquid entering this part. The utility model only records several commonly used shapes, but other O-ring grooves surrounding the second bolt hole and / or the liquid inlet can also be selected according to actual conditions.

[0020] In addition, the main body also includes a pipeline connection structure and a receiving structure connecting the pipeline connection structure and the flange.

[0021] In addition, the cross section of the main body is an I-shaped structure.

[0022] In addition, the second bolt hole is configured as one or more bolt holes symmetrically arranged at the two liquid inlets.

[0023] In addition, an annular groove is also provided on the flange.

[0024] In order to solve the above technical problems, an embodiment of the present utility model provides a screw pump using the above bearing seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0026] Figure 1 This is a front view of a conventional screw pump;

[0027] Figure 2 yes Figure 1 Side view of a conventional screw pump;

[0028] Figure 3 It is a front view of the bearing seat of Embodiment 1 of the utility model;

[0029] Figure 4 yes Figure 3 AA cross-sectional view of the bearing seat of Embodiment 1 of the utility model;

[0030] Figure 5 It is a front view of the bearing seat of Embodiment 2 of the utility model;

[0031] Figure 6 yes Figure 5 AA cross-sectional view of the bearing seat of Embodiment 2 of the present utility model;

[0032] Figure 7 It is a front view of the bearing seat of Embodiment 3 of the utility model;

[0033] Figure 8 yes Figure 7 AA section view of the bearing seat of Embodiment 3 of the utility model;

[0034] Fig. 9 yes Figure 7 The BB section view of the bearing seat of Embodiment 3 of the utility model;

[0035] Fig.10 It is a front view of the bearing seat of Embodiment 4 of the utility model;

[0036] Fig.11 yes Fig.10 AA cross-sectional view of the bearing seat of Embodiment 4 of the utility model;

[0037] Fig.12 yes Fig.10 The BB section view of the bearing seat of Embodiment 4 of the utility model;

[0038] Fig.13 It is a front view of the bearing seat of Embodiment 5 of the utility model;

[0039] Fig.14 yes Fig.13AA section view of the bearing seat of Embodiment 5 of the utility model;

[0040] Fig.15 yes Fig.13 BB section view of the bearing seat in embodiment 5 of the utility model.

[0041] Description of reference numerals:

[0042] Main body-1; liquid inlet-2; flange-3; first bolt hole-4; O-ring groove-5; second bolt hole-6; pipeline connection structure-7; receiving structure-8; annular ring groove-9. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the various embodiments of the utility model, many technical details are provided in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical schemes claimed for protection in the claims of the present application can be implemented.

[0044] In order to solve the above technical problems, an embodiment of the utility model provides a bearing seat, including a main body 1, the main body 1 also includes a pipeline connection structure 7, a flange 3, and a receiving structure 8 connecting the pipeline connection structure 7 and the flange 3.

[0045] According to the embodiment of the present utility model, the cross section of the main body 1 is an I-shaped structure.

[0046] One side of the flange 3 is connected to the flange plate on the pump body by bolts, and the pipeline connection structure 7 and the receiving structure 8 can be used to install the pipeline.

[0047] According to the embodiment of the utility model, the main body 1 is provided with two liquid inlets 2, preferably a double-interface screw pump, and may also be other pump bodies.

[0048] A flange 3 is provided on one side of the main body 1;

[0049] Wherein, the flange 3 is provided with a first bolt hole 4 and a pressure-bearing structure;

[0050] The pressure bearing structure includes an O-ring groove 5 and / or a second bolt hole 6;

[0051] The O-ring groove 5 is used to reduce the contact area when the liquid enters the bearing seat, and the O-ring groove 5 is configured to surround the second bolt hole 6 and / or the liquid inlet 2;

[0052] The second bolt holes 6 are configured to be disposed on both sides of the two liquid inlets 2 .

[0053] Compared with the traditional bearing seat, the flange 3 of the bearing seat connection end provided by the utility model adds a set of second bolt holes 6, and a set of O-ring grooves around the second bolt holes 6 or the liquid inlet 2. The utility model not only keeps the original installation dimensions of the pump body and the bearing seat unchanged, but also facilitates the standardization of products, reduces product costs, and shortens the production cycle. In practical applications, the utility model can increase the pump inlet pressure limit by 50% to 100%, reaching 0.9 to 1.2 MPa.

[0054] By adding the second bolt hole 6, the connection preload between the pump body and the bearing seat is generated by two sets of bolts, whose positions correspond to the first bolt hole 4 and the second bolt hole 6 respectively. Therefore, the preload between the pump body and the bearing seat is significantly increased, and it can withstand higher inlet pressure.

[0055] In addition, the positions and numbers of the first bolt holes 4 and the second bolt holes 6 are not fixed and can be determined according to the inlet pressure of the pump.

[0056] Compared with the traditional bearing seat, the flange 3 at the connecting end of the bearing seat provided by the utility model has two O-ring grooves 5 added. The O-ring grooves 5 isolate the pump inlet liquid from entering this part of the area. Therefore, the end area that the inlet liquid can contact will be greatly reduced, and the end surface pressure F generated by the liquid is F=P*S (P is the inlet pressure, and S is the end area of ​​the inlet liquid seal). In this way, F remains unchanged (that is, the thickness of the original connecting flange plate of the bearing seat is kept unchanged, and the bolt group is kept unchanged), S is reduced (the sealing area of ​​the O-ring groove is reduced), and it can withstand a higher inlet pressure P.

[0057] According to the embodiment of the utility model, the O-ring groove 5 and the second bolt hole 6 may be provided at the same time or at different times, and the selection may be made according to the usage scenario.

[0058] According to the embodiment of the utility model, the O-ring groove 5 can be set to various shapes as long as it can reduce the area of ​​the pump inlet liquid entering this part. The utility model only records several commonly used shapes, but other O-ring grooves 5 surrounding the second bolt hole 6 and / or the liquid inlet 2 can also be selected according to actual conditions.

[0059] For example, according to an embodiment of the present utility model, the O-ring groove 5 is in an “8” shape or a gourd shape surrounding the two liquid inlets 2 .

[0060] According to the embodiment of the utility model, two O-ring grooves 5 are provided, and the O-ring grooves 5 are annular structures surrounding the second bolt hole 6 .

[0061] According to an embodiment of the utility model, two O-ring grooves 5 are provided, and the O-ring grooves 5 are bat-shaped structures surrounding the second bolt hole 6 .

[0062] According to the embodiment of the utility model, the O-ring grooves 5 are symmetrically distributed up and down along the horizontal plane.

[0063] According to an embodiment of the present invention, the second bolt hole 6 is configured as one or more bolt holes symmetrically arranged at the two liquid inlets 2 .

[0064] According to the embodiment of the utility model, an annular groove 9 is further provided on the flange 3 .

[0065] The annular ring groove 9 exists as a special group of O-ring grooves 5. The annular ring groove 9 is generally arranged in an annular shape on the outer ring of the flange 3, close to the position of the first bolt hole 4. The annular ring groove 9 can be used in combination with the second bolt hole 6 and / or the O-ring groove 5. When the annular ring groove 9 and the second bolt hole 6 and / or the O-ring groove 5 exist at the same time, the annular ring groove 9 is located outside the second bolt hole 6 and / or the O-ring groove 5.

[0066] In order to solve the above technical problems, an embodiment of the present utility model provides a screw pump using the above bearing seat.

[0067] Example 1

[0068] like Figure 3-4 As shown, this embodiment adopts a technical solution that only uses an O-ring groove 5, and the O-ring groove 5 is an "8" shape surrounding the two liquid inlets 2, and is open in the middle to form a shape surrounding the two liquid inlets 2. Figure 1-2 Compared with the conventional bearing seat shown in the figure, the bearing seat provided in Example 1 can withstand a higher inlet pressure P. In practical applications, the bearing seat provided in Example 1 can increase the pump inlet pressure limit by 50% to 100%, reaching 0.9 to 1.2 MPa.

[0069] Example 2

[0070] like Figure 5-6 As shown, this embodiment adopts the technical solution of using both the annular groove 9 and the O-ring groove 5, and the O-ring groove 5 is a bat-shaped structure symmetrically distributed up and down along the horizontal plane. Figure 1-2 Compared with the conventional bearing seat shown in the figure, the bearing seat provided in Example 2 can withstand a higher inlet pressure P. In practical applications, the bearing seat provided in Example 2 can increase the pump inlet pressure limit by 50% to 100%, reaching 0.9 to 1.2 MPa.

[0071] Example 3

[0072] like Figure 7-9 As shown, this embodiment adopts the technical solution of using the annular ring groove 9, the O-ring groove 5 and the second bolt hole 6 at the same time. The second bolt hole 6 is provided with two and is respectively located at the upper and lower sides of the liquid inlet 2, and the O-ring groove 5 is an annular structure surrounding the second bolt hole 6. Figure 1-2 Compared with the conventional bearing seat shown in the figure, the bearing seat provided in Example 3 can withstand a higher inlet pressure P. In practical applications, the bearing seat provided in Example 3 can increase the pump inlet pressure limit by 50% to 100%, reaching 0.9 to 1.2 MPa.

[0073] Example 4

[0074] like Figure 10-12 As shown, this embodiment adopts the technical solution of using both the O-ring groove 5 and the second bolt hole 6. The second bolt hole 6 is provided with two holes, which are respectively located at the upper and lower sides of the liquid inlet 2. The O-ring groove 5 is in the shape of an "8" surrounding the two liquid inlets 2 and is open in the middle to form a shape surrounding the two liquid inlets 2. Figure 1-2 Compared with the conventional bearing seat shown in the figure, the bearing seat provided in Example 4 can withstand a higher inlet pressure P. In practical applications, the bearing seat provided in Example 4 can increase the pump inlet pressure limit by 200% to 400%, reaching 1.2 to 2.4 MPa.

[0075] Example 5

[0076] like Figure 13-15 As shown, this embodiment adopts the technical solution of using the annular ring groove 9, the O-ring groove 5 and the second bolt hole 6 at the same time. The second bolt hole 6 is provided with two and is respectively located on the upper and lower sides of the liquid inlet 2, and the O-ring groove 5 is symmetrically distributed in a bat-shaped structure along the horizontal plane. Figure 1-2 Compared with the conventional bearing seat shown in the figure, the bearing seat provided in Example 3 can withstand a higher inlet pressure P. In practical applications, the bearing seat provided in Example 3 can increase the pump inlet pressure limit by 200% to 400%, reaching 1.2 to 2.4 MPa.

[0077] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A bearing seat, characterized in that: include: A main body (1), wherein the main body (1) is provided with two liquid inlets (2); A flange (3) is arranged on one side of the main body (1); Wherein, the flange (3) is provided with a first bolt hole (4) and a pressure-bearing structure; The pressure-bearing structure comprises an O-ring groove (5) and / or a second bolt hole (6); The O-ring groove (5) is used to reduce the contact area when liquid enters the bearing seat, and the O-ring groove (5) is configured to surround the second bolt hole (6) and / or the liquid inlet (2); The second bolt holes (6) are configured to be arranged on both sides of the two liquid inlets (2).

2. The bearing seat according to claim 1, characterized in that: The O-ring groove (5) is in the shape of an "8" or a gourd surrounding the two liquid inlets (2).

3. The bearing seat according to claim 1, characterized in that: Two O-ring grooves (5) are provided, and the O-ring grooves (5) are annular structures surrounding the second bolt hole (6).

4. The bearing seat according to claim 1, characterized in that: Two O-ring grooves (5) are provided, and each O-ring groove (5) is a bat-shaped structure surrounding the second bolt hole (6).

5. The bearing seat according to claim 1, characterized in that: The O-ring grooves (5) are symmetrically distributed up and down along the horizontal plane.

6. The bearing seat according to claim 1, characterized in that: The main body (1) further comprises a pipeline connection structure (7) and a receiving structure (8) connecting the pipeline connection structure (7) and the flange (3).

7. The bearing seat according to claim 1, characterized in that: The cross section of the main body (1) is an I-shaped structure.

8. The bearing seat according to claim 1, characterized in that: The second bolt hole (6) is configured as one or more bolt holes symmetrically arranged at the two liquid inlets (2).

9. The bearing seat according to claim 1, characterized in that: The flange (3) is also provided with an annular groove (9).

10. A screw pump, characterized in that: The screw pump adopts the bearing seat as described in any one of claims 1-9.

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