A corrosion-resistant vacuum pump cover with a strong structure

Abstract

The utility model discloses a kind of corrosion-resistant vacuum pump covers of solid structure, belong to vacuum equipment field technical field, solve the technical problem of complex preparation process of anticorrosion water ring vacuum pump in prior art, and high cost.It includes pump cover main body, including the circular planar plate and circular ring side wall connected with each other, the circular planar plate center of barrel type end cover is equipped with the shaft hole of installation rotating shaft;Multiple chambers are formed by partition in the pump cover main body of open end;It is equipped with intermediate annular partition and is inwardly extended around shaft hole, upper portion between the outer side wall of intermediate annular partition outer side wall and the outer side wall of pump cover main body is equipped with upper portion vertical partition, lower portion between the outer side wall bottom of intermediate annular partition outer side wall and the outer side wall of pump cover main body is equipped with lower portion vertical partition;Lower portion vertical partition is first double-layer partition with gap in middle, second horizontal partition, first double-layer partition, intermediate annular partition, upper portion vertical partition and circular ring side wall are enclosed left and right two air chambers.

Description

Technical Field

[0001] This utility model relates to the technical field of vacuum equipment, specifically a robust and corrosion-resistant vacuum pump cover. Background Technology

[0002] Water ring vacuum pumps utilize a water seal and achieve intake, compression, and exhaust through changes in the pump chamber volume. They are widely used for extracting or transporting gases and are extensively applied in vacuum conveying, vacuum desolvation, and negative pressure distillation processes in industries such as chemical, pharmaceutical, papermaking, building materials, plastics, and textiles. However, due to the environment in which water ring vacuum pumps operate, their components are subject to severe corrosion, including water corrosion, media corrosion, electrochemical corrosion, and the most detrimental, cavitation. Existing cast iron or steel water ring vacuum pumps are not corrosion-resistant, cannot maintain a stable vacuum level for extended periods, have short service lives, and incur high overall operating costs for users. Furthermore, the frequent maintenance and replacement of vacuum pumps significantly inconvenience continuous production.

[0003] There are several types of corrosion-resistant water ring vacuum pumps on the market. Their main anti-corrosion measures are adding ceramic linings or using non-metallic (plastic) manufacturing. However, there are many drawbacks in actual use. For example, vacuum pumps with ceramic linings have lower vacuum levels and pumping capacity.

[0004] In addition, using existing corrosion-resistant metal materials is very expensive. Summary of the Invention

[0005] This utility model addresses the shortcomings and deficiencies of existing technologies by providing a robust and durable structure made of non-metallic corrosion-resistant materials, which significantly improves corrosion resistance and provides high airtightness to meet practical application requirements. Furthermore, the entire structure can be integrally molded, significantly reducing production costs. When applied to water ring vacuum pumps, it becomes a robust and corrosion-resistant vacuum pump cover that can withstand various corrosive substances.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: The robust and corrosion-resistant vacuum pump cover provided by this utility model includes a pump cover body and an air guide pipe. The pump cover body is a cylindrical end cover with one end closed, including a circular flat plate and an annular side wall connected to each other. The circular flat plate of the cylindrical end cover has a shaft hole for installing a rotating shaft at its center. The pump cover body at the open end is divided into multiple chambers by partitions; the partitions include a middle annular partition, an upper vertical partition, a lower vertical partition, and a bottom transverse partition; An inwardly extending intermediate annular baffle is provided around the shaft hole, and the intermediate annular baffle and the side wall of the pump cover body form a total chamber. An upper vertical partition is provided between the upper part of the outer wall of the middle annular partition and the outer wall of the pump cover body. A lower vertical partition is provided between the bottom of the outer wall of the middle annular partition and the outer wall of the pump cover body; The bottom transverse partition includes a first transverse sealing partition that connects the left and right sides of the circular sidewall. The lower vertical partition is a first double-layer partition with a gap in the middle, and the bottom of the first double-layer partition of the lower vertical partition extends downward to the upper part of the first horizontal sealing partition and is sealed and connected through the first horizontal sealing partition to form a first sealed vertical chamber. A second transverse partition is connected between the outer wall of the first double-layer partition of the lower vertical partition and the circular side wall. The second transverse partition, the first double-layer partition of the lower vertical partition, the middle circular partition, the upper vertical partition and the circular side wall form two air chambers: an air inlet chamber and an air outlet chamber.

[0007] Preferably, the second transverse partition and the first transverse sealing partition, as well as the annular sidewall between them and the outer sidewall of the double-layer partition of the lower vertical partition, are respectively connected to form two third transverse sealing chambers arranged symmetrically on the left and right.

[0008] Preferably, the left and right sides of the first transverse sealing partition extend outward from the annular sidewalls to form bottom support walls. The bottom support wall, the annular sidewalls, the first vertical outer sidewall, and the two front and rear vertical sidewalls connecting the three together form a sealing step. A first water inlet is provided on the first vertical outer wall of either of the two sealing steps.

[0009] Preferably, the annular sidewall of the sealing step with the first water inlet has a second water inlet that communicates with the third transverse sealing chamber; The size of the second inlet is less than or equal to the lateral diameter of the third transverse sealing chamber; Furthermore, the lower vertical partition between the third transverse sealing chamber located on the side with the first water inlet and the adjacent first sealing vertical chamber can be opened up according to the water inlet requirements, so as to realize the connection between the third transverse sealing chamber on the side with the first water inlet (15) and the first sealing vertical chamber, and finally form a water inlet passage between the sealing step on one side, the third transverse sealing chamber, and the first sealing vertical chamber.

[0010] Preferably, the upper vertical partition is also a second double-layer partition with a gap in the middle. The second horizontal partition, the first double-layer partition of the lower vertical partition, the middle annular partition, the second horizontal partition and the circular sidewall form two air chambers: an air inlet chamber and an air outlet chamber.

[0011] Preferably, the top of the pump cover body is provided with two sets of vertical air guide pipes: an inlet air guide pipe and an outlet air guide pipe. The air guide pipes are connected to their corresponding air chambers, that is, the bottom of the inlet air guide pipe is connected to the inlet air chamber, and the bottom of the outlet air guide pipe is connected to the outlet air chamber. The air intake chamber and the air exhaust chamber are arranged symmetrically on the left and right.

[0012] Preferably, a flange is provided at the top of both the inlet and outlet air ducts for connection with the air ducts.

[0013] Preferably, a second sealing chamber is formed between the first transverse sealing partition and its lower annular sidewall, and a drain outlet is provided on the circular flat plate of the second sealing chamber.

[0014] Preferably, the circular flat plate around the shaft hole has a multi-stage reinforced annular surface with a gradually decreasing outer diameter and inward indentation from the closed end to the open end and from the edge to the shaft hole. The multi-stage reinforced annular surface matches the mounting bearing bracket of the rotating shaft.

[0015] Preferably, the pump cover body is made of non-metallic material, specifically resin-reinforced glass fiber.

[0016] This invention provides a robust and corrosion-resistant vacuum pump cover. It offers the following advantages: (1) The structurally robust corrosion-resistant vacuum pump cover of this utility model is sturdy and durable. It is made of non-metallic corrosion-resistant materials, which significantly improves its corrosion resistance and has high airtightness to meet actual use requirements. At the same time, its whole body can be molded in one piece, which significantly reduces production costs.

[0017] This utility model features a robust and corrosion-resistant vacuum pump cover, primarily used in water ring vacuum pumps, making it a "general-purpose" pump product capable of withstanding various corrosive substances.

[0018] (2) It has corrosion resistance to a variety of acids, alkalis and salts. It has good resistance to air, water and various organic acids, inorganic acids (hydrochloric acid, dilute sulfuric acid, acetic acid, phosphoric acid, hydrofluoric acid) and other corrosive media, as well as a variety of oils and solvents. In terms of corrosion protection, it can replace molybdenum-containing stainless steel and even precious metals such as titanium and titanium alloys. The price is significantly reduced. It has high hardness, wear resistance, long service life and wide range of applications. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A schematic diagram of the structure of a three-dimensional image; Figure 3 for Figure 1 A structural schematic diagram of the rear view; Figure 4for Figure 1 A structural schematic diagram of the front view; Figure 5 for Figure 4 A structural schematic diagram of the right view; Figure 6 for Figure 4 A structural diagram of the bottom view.

[0020] In the diagram: 1. Pump cover body, 2. Circular flat plate, 3. Circular sidewall, 4. Shaft hole, 5. Middle annular partition, 6. Upper vertical partition, 7. Lower vertical partition, 8. First transverse sealing partition, 9. First sealing vertical chamber, 10. Second transverse partition, 11. Air inlet chamber, 12. Air outlet chamber, 13. Bottom support wall, 14. First vertical outer sidewall, 15. First water inlet, 16. Vertical sidewall, 17. Air inlet guide pipe, 18. Air outlet guide pipe, 19. Flange, 20. Second sealing chamber, 21. Water outlet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Please see Figure 1-6 This utility model provides a technical solution: This utility model provides a robust and corrosion-resistant vacuum pump cover, comprising a pump cover body 1 and a gas guide pipe. The pump cover body 1 is a cylindrical end cover closed at one end, including a circular flat plate 2 and an annular sidewall 3 connected to each other. The circular flat plate 2 of the cylindrical end cover has a shaft hole 4 for mounting a rotating shaft at its center. On the circular flat plate 2 surrounding the shaft hole 4, there are multi-stage reinforced annular surfaces with a gradually decreasing outer diameter and inward indentation from the closed end to the open end and from the edge to the shaft hole 4. The multi-stage reinforced annular surfaces match the mounting bearing bracket of the rotating shaft.

[0024] The pump cover body 1 is made of non-metallic material, specifically resin-reinforced glass fiber. This material not only has excellent sealing performance, corrosion resistance, and heat resistance, but also has a robust structure, making it well-suited for pump-type mechanical products, including water ring vacuum pumps, and has a wide range of applications.

[0025] This utility model discloses a robust and corrosion-resistant vacuum pump cover. The open end of the pump cover body 1 is divided into multiple chambers by partitions. The partitions include a central annular partition 5, an upper vertical partition 6, a lower vertical partition 7, and a bottom transverse partition. A central annular partition 5 extends inwardly around the shaft hole 4, forming a common chamber with the side wall of the pump cover body 1. An upper vertical partition 6 is positioned between the upper part of the outer side wall of the central annular partition 5 and the outer side wall of the pump cover body 1. A lower vertical partition 7 is provided between the bottom of the outer wall of the middle annular partition 5 and the outer wall of the pump cover body 1. The bottom transverse partition includes a first transverse sealing partition 8 that transversely connects the left and right sides of the annular sidewall 3. The lower vertical partition 7 is a first double-layer partition with a gap in the middle, and the bottom of the first double-layer partition of the lower vertical partition 7 extends downward to the upper side of the first transverse sealing partition 8 and is sealed and connected through the first transverse sealing partition 8 to form a first sealed vertical chamber 9.

[0026] A second transverse partition 10 is connected between the outer wall of the first double-layer partition of the lower vertical partition 7 and the annular sidewall 3. The second transverse partition 10, the first double-layer partition of the lower vertical partition 7, the middle annular partition 5, the upper vertical partition 6, and the annular sidewall 3 form two air chambers: an inlet chamber 11 and an outlet chamber 12. The top of the pump cover body 1 is provided with two sets of vertical air guide pipes: an inlet air guide pipe 17 and an outlet air guide pipe 18. The air guide pipes are connected to their corresponding air chambers, that is, the bottom of the inlet air guide pipe 17 is connected to the inlet chamber 11, and the bottom of the outlet air guide pipe 18 is connected to the outlet chamber 12. The inlet chamber 11 and the outlet chamber 12 are symmetrically arranged on the left and right. A flange 19 is provided at the top of the inlet air guide pipe 17 and the outlet air guide pipe 18 to connect with the air guide pipe.

[0027] The upper vertical partition 6 is also a second double-layer partition with a gap in the middle. The second horizontal partition 10 and the first horizontal sealing partition 8, as well as the annular side wall 3 between them and the outer side wall of the double-layer partition of the lower vertical partition 7, are respectively connected to form two third horizontal sealing chambers arranged symmetrically on the left and right.

[0028] The left and right sides of the first transverse sealing partition 8 extend outward and protrude from the annular sidewall 3 to form the bottom support wall 13. The bottom support wall 13, the annular sidewall 3, the first vertical outer sidewall 14, and the two front and rear vertical sidewalls 16 connecting the three together form a sealing step. A first water inlet 15 is provided on the first vertical outer wall 14 of either of the two sealing steps. A second water inlet is provided on the annular side wall 3 of the sealing step with the first water inlet 15, which is connected to the third transverse sealing chamber; the size of the second water inlet is less than or equal to the transverse diameter of the third transverse sealing chamber.

[0029] Furthermore, the lower vertical partition 7 located between the third transverse sealing chamber on the side with the first water inlet 15 and the adjacent first sealing vertical chamber 9 is opened up, so that the third transverse sealing chamber on the side with the first water inlet 15 is connected to the first sealing vertical chamber 9, and finally a passage is formed between the sealing step on one side, the third transverse sealing chamber, and the first sealing vertical chamber 9.

[0030] The first transverse sealing partition 8 and its lower circular side wall 3 form a second sealing chamber 20. The circular flat plate 2 of the second sealing chamber 20 is provided with a drain port 21, which facilitates the draining of water from the pump body. The operation is time-saving and labor-saving, meeting the actual use requirements.

[0031] The specific usage process is as follows: During installation, the two robust and corrosion-resistant vacuum pump covers of this utility model are installed at both ends of the pump body, and then locked together by locking caps and screws at both ends, so as to achieve effective and stable locking and sealing connection of the corrosion-resistant pump covers at both ends.

[0032] In use, the second water inlet between the sealing step with the first water inlet 15 and the third transverse sealing chamber is opened. Then, the lower vertical partition 7 between the third transverse sealing chamber on the side with the first water inlet 15 and the adjacent first sealing vertical chamber 9 is opened, so that the third transverse sealing chamber on the side with the first water inlet 15 and the first sealing vertical chamber 9 are connected. Finally, a water inlet passage is formed between the sealing step on one side, the third transverse sealing chamber, and the first sealing vertical chamber 9, so as to realize the effective water intake of the water ring vacuum pump, and at the same time, the effective separation between the water ring vacuum pump and the air inlet and outlet passages is achieved, which meets the actual use requirements.

[0033] Meanwhile, the pump cover body 1 is made of non-metallic material, specifically resin-reinforced glass fiber, which makes the prepared pump cover not only have excellent sealing performance, corrosion resistance, and heat resistance, but also achieve a robust and durable structure through ingenious design, low manufacturing cost, and easy maintenance and replacement. It is suitable for pump mechanical products including water ring vacuum pumps and has a wide range of applications.

[0034] In summary, the robust and corrosion-resistant vacuum pump cover of this utility model has a simple and ingenious structure, is sturdy, has low manufacturing cost, and provides significant corrosion protection, meeting the needs of various acidic environments and significantly extending the service life of the pump cover.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A robust and corrosion-resistant vacuum pump cover, comprising a pump cover body (1) and a gas guide pipe, characterized in that, The pump cover body (1) is a cylindrical end cover with one end closed, including a circular flat plate (2) and a circular side wall (3) connected to each other. The circular flat plate (2) of the cylindrical end cover has a shaft hole (4) for installing a rotating shaft at its center. The pump cover body (1) at the open end is divided into multiple chambers by partitions; The shaft hole (4) is surrounded by an inwardly extending intermediate annular partition (5), which forms a total chamber with the side wall of the pump cover body (1). An upper vertical partition (6) is provided between the upper part of the outer wall of the middle annular partition (5) and the outer wall of the pump cover body (1). A lower vertical partition (7) is provided between the bottom of the outer wall of the middle annular partition (5) and the outer wall of the pump cover body (1). The bottom transverse partition includes a first transverse sealing partition (8) that transversely connects the left and right sides of the circular sidewall (3). The lower vertical partition (7) is a first double-layer partition with a gap in the middle, and the bottom of the first double-layer partition extends downward to the upper side of the first horizontal sealing partition (8) and is sealed and connected through the first horizontal sealing partition (8) to form a first sealed vertical chamber (9). A second transverse partition (10) is provided between the outer wall of the first double-layer partition and the circular side wall (3). The second transverse partition (10), the first double-layer partition, the middle annular partition (5), the upper vertical partition (6) and the circular side wall (3) form two air chambers: an air inlet chamber (11) and an air outlet chamber (12).

2. The robust and corrosion-resistant vacuum pump cover according to claim 1, characterized in that, The second transverse partition (10) and the first transverse sealing partition (8), as well as the outer side wall of the annular sidewall (3) and the lower vertical partition (7) between them, are respectively connected to form two third transverse sealing chambers arranged symmetrically on the left and right.

3. The robust and corrosion-resistant vacuum pump cover according to claim 2, characterized in that, The left and right sides of the first transverse sealing partition (8) extend outward and protrude from the annular sidewall (3) to form a bottom support wall (13). The bottom support wall (13), the annular sidewall (3), the first vertical outer sidewall (14), and the two front and rear vertical sidewalls (16) connecting the three together form a sealing step. A first water inlet (15) is provided on the first vertical outer wall (14) of either of the two sealing steps.

4. The robust and corrosion-resistant vacuum pump cover according to claim 3, characterized in that, The sealing step has a second water inlet on its annular sidewall (3) that is connected to the third transverse sealing chamber, and is provided with the first water inlet (15). The size of the second inlet is less than or equal to the lateral diameter of the third transverse sealing chamber; Furthermore, the lower vertical partition (7) between the third transverse sealing chamber located on the side with the first water inlet (15) and the adjacent first sealing vertical chamber (9) can be opened up according to the water inlet requirements, so as to realize the connection between the third transverse sealing chamber on the side with the first water inlet (15) and the first sealing vertical chamber (9), and finally form a water inlet passage between the sealing step on one side, the third transverse sealing chamber, and the first sealing vertical chamber (9).

5. The robust and corrosion-resistant vacuum pump cover according to claim 1, characterized in that, The upper vertical partition (6) is also a second double-layer partition with a gap in the middle. The second horizontal partition (10), the first double-layer partition of the lower vertical partition (7), the middle annular partition (5), the second horizontal partition (10) and the annular sidewall (3) form two air chambers: an air inlet chamber (11) and an air outlet chamber (12).

6. The robust and corrosion-resistant vacuum pump cover according to claim 5, characterized in that, The top of the pump cover body (1) is provided with two sets of vertical air guide pipes: an inlet air guide pipe (17) and an outlet air guide pipe (18). The air guide pipes are connected to their corresponding air chambers, that is, the bottom of the inlet air guide pipe (17) is connected to the inlet chamber (11), and the bottom of the outlet air guide pipe (18) is connected to the outlet chamber (12). The air inlet chamber (11) and the air outlet chamber (12) are arranged symmetrically on the left and right sides.

7. A robust and corrosion-resistant vacuum pump cover according to claim 6, characterized in that, Flanges (19) are provided at the top of the air inlet pipe (17) and the air outlet pipe (18) to connect with the air outlet pipe.

8. The robust and corrosion-resistant vacuum pump cover according to claim 1, characterized in that, The first transverse sealing partition (8) and its lower circular sidewall (3) form a second sealing chamber (20), and the circular flat plate (2) of the second sealing chamber (20) is provided with a drain outlet (21).

9. A robust and corrosion-resistant vacuum pump cover according to claim 1, characterized in that, On the circular flat plate (2) located around the shaft hole (4), there is a multi-level reinforced annular surface with an outer diameter that gradually decreases and is recessed inward from the closed end to the open end and from the edge to the shaft hole (4). The multi-level reinforced annular surface matches the mounting bearing bracket of the rotating shaft.

10. A robust and corrosion-resistant vacuum pump cover according to claim 1, characterized in that, The pump cover body (1) is made of non-metallic material, specifically resin-reinforced glass fiber.

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