Corrosion-resistant sealing assembly of air bag pump

Abstract

The utility model provides a corrosion-resistant sealing assembly of an air bag pump, and relates to the technical field of air bag pumps. Comprising a sealing ring, a first cover body and a second cover body, a first liquid inlet pipe and a second liquid inlet pipe are arranged in the first cover body and the second cover body respectively, and the inner diameter of the first liquid inlet pipe is equal to the outer diameter of the second liquid inlet pipe; the first cover body and the second cover body can be connected through a bolt in the using process. A first protruding block is arranged on one end face of the sealing ring, a first groove is formed in one end of the first liquid inlet pipe, one end face of the sealing ring makes contact with one end of the first liquid inlet pipe, and the first protruding block is connected with the first groove in a clamped mode. A second protruding block is arranged on the inner surface of the sealing ring, a second groove is formed in the outer surface of the second liquid inlet pipe, the inner surface of the sealing ring makes contact with the outer surface of the second liquid inlet pipe, and the second protruding block is connected with the second groove in a clamped mode. Therefore, the sealing performance of the contact position of the first liquid inlet pipe and the second liquid inlet pipe is improved.

Description

Technical Field

[0001] This utility model relates to the field of airbag pump technology, specifically to a corrosion-resistant sealing assembly for an airbag pump. Background Technology

[0002] The semiconductor and electronics industries require pumps for transporting highly corrosive liquids such as acids and alkalis, such as airbag pumps. Airbag pumps are indispensable pumping equipment in the semiconductor manufacturing supply chain. They are non-metallic pumps used to transport high-purity, acid- and alkali-resistant fluids, and can also be used to transport other high-purity fluids. Airbag pumps use compressed air as power and rely on a variable-volume airbag that alternately increases and decreases its working volume within the pump cylinder to transport special liquids. The pump chamber of the airbag is divided into two working chambers, each consisting of a gas phase working chamber and a liquid phase working chamber. After compressed air enters the gas phase working chamber, the compressed airbag deforms and moves. A reversing valve controls the compressed air to sequentially enter the two gas phase working chambers. The alternating suction and discharge of liquid in the liquid phase working chamber achieves the transport of the liquid.

[0003] The airbag pump needs to be in a highly corrosive solution for a long time. The existing sealing method is to simply insert a PFA tube into a PTFE hole and then weld the joint with a welding rod after connection. Since the seal is in a corrosive solution for a long time, welding alone cannot ensure long-term operation and prevent leakage. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a corrosion-resistant sealing assembly for a wind pump. The corrosion-resistant sealing assembly includes a sealing ring, a first cover, and a second cover. The first cover and the second cover are respectively provided with a first inlet pipe and a second inlet pipe inside. The inner diameter of the first inlet pipe is equal to the outer diameter of the second inlet pipe. The first cover and the second cover can be connected by bolts during use.

[0005] A first protrusion is provided on one end face of the sealing ring, and a first groove is provided on one end of the first liquid inlet pipe. One end face of the sealing ring is in contact with one end of the first liquid inlet pipe, and the first protrusion is engaged with the first groove. A second protrusion is provided on the inner surface of the sealing ring, and a second groove is provided on the outer surface of the second liquid inlet pipe. The inner surface of the sealing ring is in contact with the outer surface of the second liquid inlet pipe, and the second protrusion is engaged with the second groove.

[0006] This utility model provides a corrosion-resistant sealing assembly at the connection between the first and second inlet pipes. The sealing assembly includes a sealing ring at the connection between the first and second inlet pipes. The sealing ring has a first protrusion and a second protrusion. The first protrusion is in close contact with the first groove, and the second protrusion is in close contact with the second groove, thereby improving the sealing performance at the contact point between the first and second inlet pipes.

[0007] On the other hand, the sealing assembly formed by the connection of the first cover and the second cover has a cavity with a certain space inside. This cavity can further prevent leaked liquid from flowing out and causing pollution or damage to other objects.

[0008] To elaborate further, the sealing ring is made of rubber.

[0009] Optionally, the height of the sealing ring is lower than the height of the inner surface of the first cover; the height of the sealing ring is lower than the height of the inner surface of the second cover. Alternatively, the height of the sealing ring gradually decreases along the second inlet pipe. This avoids the sealing ring being too high, which would prevent leaked liquid from flowing into the cavity and instead leak to the outside.

[0010] Optionally, a sealing gasket is provided at the connection between the first cover and the second cover. A third protrusion and a fourth protrusion are respectively provided on both sides of the sealing gasket. A third groove is provided on the surface of the first cover that contacts the second cover, and a fourth groove is provided on the surface of the second cover that contacts the first cover. The third protrusion engages with the third groove, and the fourth protrusion engages with the fourth groove.

[0011] Furthermore, to further improve the sealing performance of the sealing assembly, this invention incorporates a third and a fourth protrusion on each side of the sealing gasket. These protrusions are staggered, ensuring close contact between the third and fourth protrusions during use. The sealing gasket is made of rubber, which enhances sealing performance and further prevents leakage of corrosive liquids.

[0012] Optionally, a fifth protrusion is provided on the surface of the first cover that contacts the first liquid inlet pipe, and a fifth groove is provided on the outer surface of the first liquid inlet pipe, with the fifth protrusion engaging with the fifth groove.

[0013] Optionally, a first rubber layer is laid on the surface of the first cover that contacts the first liquid inlet pipe.

[0014] Furthermore, in order to prevent leaked liquid from leaking from the contact point between the first cover and the first inlet pipe, this utility model provides a fifth groove on the outer surface of the first inlet pipe, a fifth protrusion on the first cover, and lays a first rubber layer. During the contact process, the fifth protrusion engages with the fifth groove. The first rubber layer makes the contact between the first cover and the first inlet pipe tighter, further enhancing the sealing performance.

[0015] Optionally, a sixth protrusion is provided on the surface of the second cover that contacts the second liquid inlet pipe, and a sixth groove is provided on the outer surface of the second liquid inlet pipe, with the sixth protrusion engaging with the sixth groove. A second rubber layer is provided on the surface of the second cover that contacts the second liquid inlet pipe.

[0016] Furthermore, in order to prevent leaked liquid from leaking from the contact point between the second cover and the second inlet pipe, this utility model provides a sixth groove on the outer surface of the second inlet pipe, a sixth protrusion on the second cover, and a second rubber layer. During contact, the sixth protrusion engages with the sixth groove. The second rubber layer further enhances the tightness of the contact between the second cover and the second inlet pipe, thus improving the sealing performance.

[0017] In this utility model, the cross-sections of the first protrusion, second protrusion, third protrusion, fourth protrusion, fifth protrusion, and sixth protrusion can be circular, semi-circular, elliptical, or rectangular, and the shapes of the first groove, second groove, third groove, fourth groove, fifth groove, and sixth groove are adjusted accordingly based on the shape of the protrusion or protrusion.

[0018] Optionally, the outer periphery of the first cover has several connecting holes, the outer periphery of the second cover has several threaded holes, and the outer periphery of the sealing gasket has several openings. During use, bolts can pass through the connecting holes of the first cover and the openings of the sealing gasket, and be threaded into the threaded holes of the second cover, thereby connecting the first cover and the second cover.

[0019] Optionally, handles are symmetrically provided on the outer sides of both the first and second covers. Each handle includes a fixing block and a pull ring. One end of the fixing block is connected to the outer surface of the first and second covers, and the other end is connected to the pull ring. By separately installing the fixing block and pull ring on the outer surfaces of the first and second covers, it avoids directly drilling holes in the first and second covers to install the handles, which could lead to leakage at the handles during subsequent lifting. Furthermore, by providing handles, it is easier for operators to install and remove the covers, preventing contact with leaking liquids during installation or removal.

[0020] Compared with the prior art, the present invention achieves at least one of the following beneficial effects:

[0021] (1) The corrosion-resistant sealing assembly of the wind pump of this utility model is provided with a sealing ring at the connection between the first inlet pipe and the second inlet pipe. The sealing ring is provided with a first protrusion and a second protrusion. The first protrusion is in close contact with the first groove, and the second protrusion is in close contact with the second groove, thereby improving the sealing performance at the contact position between the first inlet pipe and the second inlet pipe.

[0022] (2) The corrosion-resistant sealing assembly of the wind pump of this utility model has a cavity with a certain space inside, which is formed by connecting the first cover and the second cover. This cavity can further prevent the leaked liquid from flowing to the outside and prevent pollution or damage to other objects.

[0023] (3) This utility model features a third protrusion and a fourth protrusion on both sides of the sealing gasket. During use, the third protrusion can make close contact with the third groove, and the fourth protrusion can make close contact with the fourth groove. The sealing gasket is made of rubber, which improves the sealing performance and further prevents leakage of corrosive liquids.

[0024] (4) The present invention provides a fifth groove on the outer surface of the first liquid inlet pipe, a fifth protrusion on the first cover, and a first rubber layer. During the contact process, the fifth protrusion engages with the fifth groove. Through the setting of the first rubber layer, the contact between the first cover and the first liquid inlet pipe becomes tighter, further enhancing the sealing performance. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 An exemplary embodiment of the corrosion-resistant sealing assembly for the wind bag pump of this utility model is shown in the schematic diagram.

[0027] Figure 2 An exemplary embodiment of the corrosion-resistant sealing assembly for the wind bag pump of this utility model is shown in the cross-sectional structural schematic diagram.

[0028] Figure 3 Shown Figure 2 Enlarged view of section A;

[0029] Figure 4 Shown Figure 2 Enlarged view of section B;

[0030] Figure 5 Shown Figure 2 Enlarged view of section C;

[0031] Figure 6 An exemplary embodiment of the handle structure schematic diagram is shown.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1-Sealing ring; 11-First protrusion; 12-Second protrusion; 2-First cover; 21-Third groove; 22-Fifth protrusion; 3-Second cover; 31-Fourth groove; 32-Sixth protrusion; 4-First inlet pipe; 41-First groove; 42-Fifth groove; 5-Second inlet pipe; 51-Second groove; 52-Sixth groove; 6-Sealing gasket; 61-Third protrusion; 62-Fourth protrusion; 7-Handle; 71-Fixing block; 72-Pull ring. Detailed Implementation

[0034] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0036] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," 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, an electrical connection, or a communication 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.

[0038] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] In an exemplary embodiment of this utility model, the corrosion-resistant sealing assembly of the airbag pump includes a sealing ring 1, a first cover 2, and a second cover 3. A first inlet pipe 4 and a second inlet pipe 5 are respectively disposed inside the first cover 2 and the second cover 3. The inner diameter of the first inlet pipe 4 is equal to the outer diameter of the second inlet pipe 5. The sealing ring 1 is disposed at the connection between the first inlet pipe 4 and the second inlet pipe 5. After the first inlet pipe 4 and the second inlet pipe 5 are threadedly connected, the sealing ring 1 is fitted onto the second inlet pipe 5. The sealing ring is frustoconical in shape and made of rubber.

[0040] A first protrusion 11 is provided on one end face of the sealing ring 1 (the end face that contacts the first liquid inlet pipe 4), and a first groove 41 is provided on one end of the first liquid inlet pipe 4. One end face of the sealing ring 1 contacts one end of the first liquid inlet pipe 4, and the first protrusion 11 is engaged with the first groove 41. A second protrusion 12 is provided on the inner surface of the sealing ring 1, and a second groove 51 is provided on the outer surface of the second liquid inlet pipe 5. The inner surface of the sealing ring 1 contacts the outer surface of the second liquid inlet pipe 5, and the second protrusion 12 is engaged with the second groove 51.

[0041] A sealing gasket 6 is provided at the connection between the first cover 2 and the second cover 3. A third protrusion 61 and a fourth protrusion 62 are respectively formed on both sides of the sealing gasket 6. A third groove 21 is formed on the surface of the first cover 2 (the surface in contact with the second cover 3), and a fourth groove 31 is formed on the surface of the second cover 3 (the surface in contact with the first cover 2). During use, the third protrusion 61 engages with the third groove 21, and the fourth protrusion 62 engages with the fourth groove 31. The sealing gasket is made of rubber, which improves the sealing performance and further prevents leakage of corrosive liquids.

[0042] A fifth protrusion 22 is provided on the surface of the first cover 2 that contacts the first liquid inlet pipe 4, and a fifth groove 42 is provided on the outer surface of the first liquid inlet pipe 4. The fifth protrusion 22 and the fifth groove 42 are engaged. A first rubber layer (not shown in the figure) is laid on the surface of the first cover 2 that contacts the first liquid inlet pipe 4.

[0043] A sixth protrusion 32 is provided on the surface of the second cover 3 that contacts the second liquid inlet pipe 5, and a sixth groove 52 is provided on the outer surface of the second liquid inlet pipe 5. The sixth protrusion 32 and the sixth groove 52 are engaged. A second rubber layer (not shown in the figure) is laid on the surface of the second cover 3 that contacts the second liquid inlet pipe 5.

[0044] The cross-sections of the first protrusion 11, the second protrusion 12, the third protrusion 61, the fourth protrusion 62, the fifth protrusion 22, and the sixth protrusion 32 are semi-circular. The cross-sectional shapes of the first groove, the second groove, the third groove, the fourth groove, the fifth groove, and the sixth groove are also semi-circular. The specific size of the semi-circles can be adjusted by those skilled in the art according to the size of the assembly, and this utility model is not limited thereto.

[0045] The outer periphery of the first cover has several connecting holes, the outer periphery of the second cover has several threaded holes, and the outer periphery of the sealing gasket has several openings. During use, bolts can pass through the connecting holes of the first cover and the openings of the sealing gasket, and be threaded into the threaded holes of the second cover, thereby connecting the first cover and the second cover.

[0046] Handles 7 are symmetrically provided on the outer surfaces of the first cover 2 and the second cover 3. Each handle 7 includes a fixing block 71 and a pull ring 72. One end of the fixing block 71 is connected to the outer surface of the first cover 2 and the second cover 3 respectively, and the other end of the fixing block 71 is connected to the pull ring 72.

[0047] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A corrosion-resistant sealing assembly for a wind pump, characterized in that, The corrosion-resistant sealing assembly includes a sealing ring, a first cover, and a second cover. The first cover and the second cover are respectively provided with a first liquid inlet pipe and a second liquid inlet pipe. The inner diameter of the first liquid inlet pipe is equal to the outer diameter of the second liquid inlet pipe. A first protrusion is provided on one end face of the sealing ring, and a first groove is provided on one end of the first liquid inlet pipe. One end face of the sealing ring is in contact with one end of the first liquid inlet pipe, and the first protrusion is engaged with the first groove. A second protrusion is provided on the inner surface of the sealing ring, and a second groove is provided on the outer surface of the second liquid inlet pipe. The inner surface of the sealing ring is in contact with the outer surface of the second liquid inlet pipe, and the second protrusion is engaged with the second groove.

2. The corrosion-resistant sealing assembly for the airbag pump according to claim 1, characterized in that, A sealing gasket is provided at the connection between the first cover and the second cover. A third protrusion and a fourth protrusion are respectively provided on both sides of the sealing gasket. A third groove is provided on the surface of the first cover that contacts the second cover, and a fourth groove is provided on the surface of the second cover that contacts the first cover. The third protrusion engages with the third groove, and the fourth protrusion engages with the fourth groove.

3. The corrosion-resistant sealing assembly for the airbag pump according to claim 1, characterized in that, The first cover has a fifth protrusion on the surface that contacts the first liquid inlet pipe, and the outer surface of the first liquid inlet pipe has a fifth groove, with the fifth protrusion engaging with the fifth groove.

4. The corrosion-resistant sealing assembly for the airbag pump according to claim 3, characterized in that, A first rubber layer is laid on the surface of the first cover that contacts the first liquid inlet pipe.

5. The corrosion-resistant sealing assembly for the airbag pump according to claim 1, characterized in that, The second cover has a sixth protrusion on the surface that contacts the second liquid inlet pipe, and the outer surface of the second liquid inlet pipe has a sixth groove, with the sixth protrusion engaging with the sixth groove.

6. The corrosion-resistant sealing assembly for the airbag pump according to claim 5, characterized in that, A second rubber layer is laid on the surface of the second cover that contacts the second liquid inlet pipe.

7. The corrosion-resistant sealing assembly for the airbag pump according to claim 2, characterized in that, The outer periphery of the first cover has several connecting holes, the outer periphery of the second cover has several screw holes, and the outer periphery of the sealing gasket has several openings.

8. The corrosion-resistant sealing assembly for the airbag pump according to claim 1, characterized in that, Handles are symmetrically provided on the outer sides of both the first and second covers.

9. The corrosion-resistant sealing assembly for the airbag pump according to claim 8, characterized in that, The handle includes a fixing block and a pull ring. One end of the fixing block is connected to the outer surface of the first cover and the second cover, and the other end of the fixing block is connected to the pull ring.

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