Plastic-lined pump body

Abstract

The utility model discloses a plastic-lined pump body, and relates to the technical field of pump bodies, the plastic-lined pump body comprises a pump body casting, the pump body casting is provided with a plurality of grooves, each groove is internally provided with an embedded column, the axial lead of each groove and the axial lead of each embedded column are arranged in a crossed mode, a plastic-lined part is formed in the pump body casting in an injection molding mode, and the plastic-lined part is arranged in the pump body casting in an injection molding mode. A plurality of protrusions are formed on the outer surface of the lining plastic part, correspond to the grooves in a one-to-one mode and are located in the grooves. The axial lead of the groove and the axial lead of the embedded column are arranged in a crossed mode, so that the contact area and the mechanical meshing force between the lining plastic part and the pump body casting can be effectively increased, and the fixing effect of the lining plastic part in the pump body casting is remarkably improved. In addition, the plastic lining part can be further prevented from being separated from the pump body casting due to shrinkage in the forming process through the matched design of the groove and the protrusion, and the forming quality and the use reliability of the product are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of pump bodies, in particular to a plastic-lined pump body. BACKGROUND

[0002] The plastic-lined pump body is a corrosion-resistant pump body structure in which a layer of plastic or rubber material is compounded on the inner surface of a metal pump shell. The structure can not only effectively protect the metal pump shell from corrosion by corrosive media, but also improve the overall performance of the pump body, thereby meeting the needs of different industries for high reliability and long service life pump bodies and being widely applied to the fields of corrosive medium conveying such as chemical industry, pharmaceutical industry and electroplating.

[0003] In the compression molding process of the fluorine-lined centrifugal pump body, the shrinkage of fluorine plastic during the molding process can cause the plastic lining layer to be separated from the pump body casting, thereby affecting the molding and use of the product. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a plastic-lined pump body to prevent the plastic lining layer from being separated from the pump body casting.

[0005] The plastic-lined pump body provided by the application adopts the following technical scheme: a pump body casting is provided with a plurality of grooves, each groove is provided with an inlay column, the axis of the groove and the axis of the inlay column are crosswise arranged, a plastic lining piece is injection molded in the pump body casting, the outer surface of the plastic lining piece is formed with a plurality of protrusions, the protrusions correspond to the grooves one by one, and the protrusions are located in the grooves.

[0006] By adopting the above technical scheme, the crosswise arrangement of the axis of the groove and the axis of the inlay column can effectively increase the contact area and mechanical engagement force between the plastic lining piece and the pump body casting, thereby significantly improving the fixing effect of the plastic lining piece in the pump body casting. In addition, the matching design of the groove and the protrusion can further prevent the plastic lining piece from being separated from the pump body casting due to shrinkage during the molding process, thereby improving the molding quality and use reliability of the product.

[0007] Optionally, the pump body casting is provided with a plurality of mounting grooves, one groove corresponds to two mounting grooves, the groove and the mounting groove are communicated, the inlay column is arranged in the two mounting grooves, the outer surface of the plastic lining piece is formed with a plurality of mounting blocks, the mounting blocks correspond to the mounting grooves one by one, and the mounting blocks are located in the mounting grooves.

[0008] By adopting the above technical scheme, the mounting grooves play a positioning role in the installation of the inlay column, so that the inlay column can be accurately installed to the corresponding position, thereby improving the installation efficiency of the inlay column. The matching of the mounting block and the mounting groove can effectively enhance the connection stability between the plastic lining piece and the pump body casting.

[0009] Optionally, the inner ring of the pump body casting is provided with a first arc-shaped dovetail groove, and the outer surface of the plastic lining member is formed with a first arc-shaped dovetail block located in the first arc-shaped dovetail groove.

[0010] By adopting the above technical scheme, the first arc-shaped dovetail block and the first arc-shaped dovetail groove are matched with each other, so that the connection strength between the plastic lining member and the pump body casting is effectively increased, the plastic lining member is prevented from falling off during use, and the overall stability of the plastic lining pump body is improved.

[0011] Optionally, the inner ring of the pump body casting is provided with a plurality of second arc-shaped dovetail grooves, each of the second arc-shaped dovetail grooves is communicated with the first arc-shaped dovetail groove, the outer surface of the plastic lining member is formed with a plurality of second arc-shaped dovetail blocks corresponding to the second arc-shaped dovetail grooves, and the second arc-shaped dovetail blocks are located in the second arc-shaped dovetail grooves.

[0012] By adopting the above technical scheme, the second arc-shaped dovetail block and the second arc-shaped dovetail groove are matched with each other, so that a multiple mechanical interlocking structure is formed between the plastic lining member and the pump body casting, and the connection strength between the plastic lining member and the pump body casting is effectively increased. The communication design of the second arc-shaped dovetail groove and the first arc-shaped dovetail groove further improves the bonding strength between the plastic lining member and the pump body casting, and effectively prevents the plastic lining member from being separated from the pump body casting due to shrinkage during compression molding.

[0013] Optionally, the plurality of second arc-shaped dovetail grooves are divided into two rows, and the first arc-shaped dovetail groove is located between the two rows of second arc-shaped dovetail grooves.

[0014] By adopting the above technical scheme, this design makes the entire connection structure more balanced and stable, further improves the bonding force between the plastic lining member and the pump body casting, and effectively prevents the problem of separation of the plastic lining layer from the pump body casting due to shrinkage of fluoroplastic.

[0015] Optionally, the second arc-shaped dovetail grooves in one row are arranged in a staggered manner with the second arc-shaped dovetail grooves in the other row.

[0016] By adopting the above technical scheme, the staggered arrangement of the two rows of second arc-shaped dovetail grooves further optimizes the stress distribution and enhances the structural stability.

[0017] Optionally, the outer surface of the pump body casting is provided with a T-shaped ring groove, and the plastic lining member is formed with a T-shaped ring block located in the T-shaped ring groove.

[0018] By adopting the above technical scheme, the cooperation of the T-shaped ring block and the T-shaped ring groove can effectively increase the connection stability between the plastic lining member and the pump body casting, prevent the plastic lining member from being displaced in the radial and axial directions during use, and thus improve the overall reliability and service life of the product.

[0019] Optionally, the radius size of each groove gradually decreases towards the opening of the groove.

[0020] By adopting the technical scheme, the combination tightness between the plastic lining and the pump body casting is improved, the overall structural stability of the pump body is enhanced, and the risk of separation of the plastic lining from the pump body casting due to shrinkage of the fluorine plastic is reduced.

[0021] Optionally, the inner wall of each groove is provided with a connecting groove, the inner wall of the connecting groove is provided with a limiting groove, the connecting groove and the limiting groove are in communication, the connecting groove is located between the limiting groove and the groove, the radius size of the limiting groove is greater than that of the connecting groove, each protrusion is formed with a connecting rod, each connecting rod is formed with a limiting block, the connecting rod is located in the connecting groove, and the limiting block is located in the limiting groove.

[0022] By adopting the technical scheme, the movement of the limiting block is limited by the inner wall of the limiting groove, so that the protrusion is prevented from separating from the groove. The structural design significantly improves the combination strength between the plastic lining and the pump body casting, and effectively avoids the separation problem caused by shrinkage of the fluorine plastic.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The cross arrangement of the axis of the groove and the axis of the insert post can effectively increase the contact area and mechanical engagement force between the plastic lining and the pump body casting, thereby significantly improving the fixing effect of the plastic lining in the pump body casting. In addition, the cooperation design of the groove and the protrusion can further prevent the plastic lining from separating from the pump body casting due to shrinkage during the molding process, and improve the molding quality and use reliability of the product.

[0025] 2. The mutual cooperation of the second arc-shaped dovetail block and the second arc-shaped dovetail groove forms a multiple mechanical engagement structure between the plastic lining and the pump body casting, which can effectively increase the connection strength between the plastic lining and the pump body casting. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application.

[0027] Figure 2 is one of the schematic diagrams of the partial structure of embodiment 1 of the present application, showing the groove.

[0028] Figure 3 is Figure 2 is an enlarged view of area A of

[0029] Figure 4is a second partial structure schematic view of the embodiment 1 of the present application, showing the protrusion.

[0030] Figure 5 is a partial structure schematic view of the embodiment 1 of the present application, showing the first arc-shaped dovetail groove. Figure 4 is an enlarged view of the B area of

[0031] Figure 6 is a third partial structure schematic view of the embodiment 1 of the present application, showing the second arc-shaped dovetail groove.

[0032] Figure 7 is a fourth partial structure schematic view of the embodiment 1 of the present application, showing the second arc-shaped dovetail block.

[0033] Figure 8 is a sectional view of the embodiment 2 of the present application.

[0034] Figure 9 is an enlarged view of the C area of Figure 8

[0035] Figure 10 is a partial structure schematic view of the embodiment 2 of the present application.

[0036] Explanation of reference numerals: 1, pump body casting; 11, recess; 12, mounting groove; 13, first arc-shaped dovetail groove; 14, second arc-shaped dovetail groove; 15, T-shaped ring groove; 16, connecting groove; 17, limiting groove; 2, plastic lining piece; 21, protrusion; 22, mounting block; 23, first arc-shaped dovetail block; 24, second arc-shaped dovetail block; 25, T-shaped ring block; 26, connecting rod; 27, limiting block; 3, inlay column. DETAILED DESCRIPTION

[0037] The following will be described in detail in combination with the accompanying drawings. Figure 1 - the accompanying drawings Figure 10 The present application will be further described in detail.

[0038] The embodiment of the present application discloses a plastic-lined pump body.

[0039] Embodiment 1

[0040] In combination with Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ​As shown, the pump body casting 1 is provided with a plastic lining 2 injection molded therein, the inner surface of the pump body casting 1 is provided with a plurality of grooves 11, the outer surface of the plastic lining 2 is provided with a plurality of protrusions 21 injection molded thereon, the protrusions 21 are integrally formed with the plastic lining 2, the protrusions 21 correspond to the grooves 11 one by one, and the protrusions 21 are located in the grooves 11. The inner surface of the pump body casting 1 is provided with a plurality of mounting grooves 12, the number of the mounting grooves 12 is twice the number of the grooves 11, one groove 11 corresponds to two mounting grooves 12, the groove 11 is in communication with the mounting grooves 12, and the groove 11 is located between the corresponding two mounting grooves 12. The mounting grooves 12 are fixedly connected with a plurality of inserts 3 in a welded manner, the inserts 3 are located in the two mounting grooves 12, and the axis of the groove 11 is perpendicular to the axis of the insert 3. The outer surface of the plastic lining 2 is provided with a plurality of mounting blocks 22 injection molded thereon, the mounting blocks 22 are integrally formed with the plastic lining 2, the mounting blocks 22 correspond to the mounting grooves 12 one by one, and the mounting blocks 22 are located in the mounting grooves 12.

[0041] In combination Figure 6 and Figure 7 As shown, the inner ring of the pump body casting 1 is provided with a first arc-shaped dovetail groove 13, the outer surface of the plastic lining 2 is provided with a first arc-shaped dovetail block 23, the first arc-shaped dovetail block 23 is integrally formed with the plastic lining 2, and the first arc-shaped dovetail block 23 is clamped into the first arc-shaped dovetail groove 13. The inner ring of the pump body casting 1 is provided with a plurality of second arc-shaped dovetail grooves 14, each of the second arc-shaped dovetail grooves 14 is in communication with the first arc-shaped dovetail groove 13, the outer surface of the plastic lining 2 is provided with a plurality of second arc-shaped dovetail blocks 24 injection molded thereon, the second arc-shaped dovetail blocks 24 correspond to the second arc-shaped dovetail grooves 14 one by one, and the second arc-shaped dovetail blocks 24 are located in the second arc-shaped dovetail grooves 14. The plurality of second arc-shaped dovetail grooves 14 are divided into two rows, and the first arc-shaped dovetail groove 13 is located between the two rows of second arc-shaped dovetail grooves 14.

[0042] In combination Figure 6 and Figure 7 As shown, the outer surface of the pump body casting 1 is provided with a T-shaped ring groove 15 located at one end of the pump body casting 1, and the plastic lining 2 is provided with a T-shaped ring block 25 injection molded thereon, the T-shaped ring block 25 is integrally formed with the plastic lining 2, and the T-shaped ring block 25 is located in the T-shaped ring groove 15.

[0043] The implementation principle of the plastic lining pump body according to the embodiment of the present application is as follows:

[0044] The intersecting arrangement of the axis of the groove 11 and the axis of the insert 3 can effectively increase the contact area and mechanical engagement force between the plastic lining 2 and the pump body casting 1, thereby significantly improving the fixing effect of the plastic lining 2 in the pump body casting 1. In addition, the cooperation design of the groove 11 and the protrusion 21 can further prevent the plastic lining 2 from being separated from the pump body casting 1 due to shrinkage during the molding process, thereby improving the molding quality and use reliability of the product.

[0045] Example 2

[0046] The difference between this embodiment and Embodiment 1 is that, in combination with Figure 8 and Figure 9 As shown, the radius of each groove 11 gradually decreases towards the opening of the groove 11. Each groove 11 has a connecting groove 16 on its inner wall. A limiting groove 17 is formed on the side of the connecting groove 16 away from the groove 11. Both the groove 11 and the limiting groove 17 communicate with the connecting groove 16. The connecting groove 16 is located between the limiting groove 17 and the groove 11. The radius of the limiting groove 17 is larger than the radius of the connecting groove 16. Each protrusion 21 has a connecting rod 26 injection-molded on the side away from the liner 2. The connecting rod 26 is integrally formed with the protrusion 21. Each connecting rod 26 also has a limiting block 27 injection-molded on the side away from the protrusion 21. The limiting block 27 is integrally formed with the connecting rod 26. The connecting rod 26 is located within the connecting groove 16, and the limiting block 27 is located within the limiting groove 17.

[0047] like Figure 10 As shown, the second arc-shaped dovetail grooves 14 in one column are staggered with the second arc-shaped dovetail grooves 14 in another column.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A plastic lined pump body characterized by: The pump body casting (1) is provided with a plurality of recesses (11), each of which is provided with an insert column (3), the axis of the recess (11) and the axis of the insert column (3) are cross arranged, the pump body casting (1) is injection molded with a plastic lining (2), the outer surface of the plastic lining (2) is formed with a plurality of protrusions (21), the protrusions (21) correspond to the recesses (11) one by one, and the protrusions (21) are located in the recesses (11).

2. The plastic lined pump body of claim 1, wherein: The pump body casting (1) is provided with a plurality of installation grooves (12), one recess (11) corresponds to two installation grooves (12), the recess (11) and the installation groove (12) are communicated, the insert column (3) is arranged in the two installation grooves (12), the outer surface of the plastic lining (2) is formed with a plurality of installation blocks (22), the installation blocks (22) correspond to the installation grooves (12) one by one, and the installation blocks (22) are located in the installation grooves (12).

3. The plastic lined pump body of claim 1, wherein: The inner ring of the pump body casting (1) is provided with a first arc-shaped dovetail groove (13), the outer surface of the plastic lining (2) is formed with a first arc-shaped dovetail block (23), and the first arc-shaped dovetail block (23) is located in the first arc-shaped dovetail groove (13).

4. The plastic lined pump body of claim 3, wherein: The inner ring of the pump body casting (1) is provided with a plurality of second arc-shaped dovetail grooves (14), each of which is communicated with the first arc-shaped dovetail groove (13), the outer surface of the plastic lining (2) is formed with a plurality of second arc-shaped dovetail blocks (24), the second arc-shaped dovetail blocks (24) correspond to the second arc-shaped dovetail grooves (14) one by one, and the second arc-shaped dovetail blocks (24) are located in the second arc-shaped dovetail grooves (14).

5. The plastic lined pump body of claim 4, wherein: The plurality of second arc-shaped dovetail grooves (14) are divided into two rows, and the first arc-shaped dovetail groove (13) is located between the two rows of second arc-shaped dovetail grooves (14).

6. The plastic lined pump body of claim 4 wherein: The second arc-shaped dovetail grooves (14) in one row are staggered with the second arc-shaped dovetail grooves (14) in the other row.

7. The plastic lined pump body of claim 1 wherein: The outer surface of the pump body casting (1) is provided with a T-shaped ring groove (15), the plastic lining (2) is formed with a T-shaped ring block (25), and the T-shaped ring block (25) is located in the T-shaped ring groove (15).

8. The plastic lined pump body of claim 1 wherein: The radius size of each recess (11) gradually decreases towards the opening direction of the recess (11).

9. The plastic lined pump body of claim 1 wherein: The inner wall of each recess (11) is provided with a connecting groove (16), the inner wall of the connecting groove (16) is provided with a limiting groove (17), the recess (11) and the limiting groove (17) are communicated with the connecting groove (16), the connecting groove (16) is located between the limiting groove (17) and the recess (11), the radius size of the limiting groove (17) is greater than that of the connecting groove (16), each protrusion (21) is formed with a connecting rod (26), each connecting rod (26) is formed with a limiting block (27), the connecting rod (26) is located in the connecting groove (16), and the limiting block (27) is located in the limiting groove (17).

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