Acid and alkali resistant mechanical telescopic double-shaft seal structure

Abstract

The utility model provides an acid and alkali resistant mechanical telescopic double-shaft seal structure which comprises a telescopic ring piece, a through inner hole is formed in the telescopic ring piece, and a plurality of telescopic folds are arranged in the middle section of the telescopic ring piece; the spring piece is arranged in the inner hole, located in the telescopic fold, of the telescopic ring piece, one end of the spring piece abuts against the inner hole in one end of the telescopic fold, and the other end of the spring piece abuts against the other end of the inner hole in the telescopic fold; the inner O-shaped ring is arranged in the inner hole at the other end of the telescopic ring piece; the gasket is arranged at the other end of the telescopic ring piece; the rotating ring is arranged at the other end of the gasket and is connected and combined with the telescopic ring piece, and the gasket is clamped between one end of the rotating ring and the other end of the telescopic ring piece; the telescopic ring piece is positioned in the inner hole of the telescopic fold and is provided with the spring piece to generate extrusion and compression sealing; the telescopic ring piece, the spring piece, the gasket and the rotating ring are made of high-temperature-resistant, acid-base-resistant and corrosion-resistant materials, and wear-resistant materials are arranged on the inner face and the outer face of the telescopic ring piece.

Description

Technical Field

[0001] This utility model relates to the technical field of dual-shaft seal structure, and more particularly to an acid and alkali resistant mechanical telescopic dual-shaft seal structure that uses Teflon material that is resistant to acids, alkalis, corrosion and high temperatures and has wear-resistant material on both sides, utilizes external cooling and has a gasket and a rotating ring at one end of the telescopic ring. Background Technology

[0002] Please see Figures 1 to 3 The figures shown are, respectively, a sectional view of the conventional shaft seal and the pump installed in the pump assembly, a sectional view of the conventional shaft seal assembly, and an exploded perspective view of the conventional shaft seal. The conventional product shaft seal structure includes a telescopic ring 2, a spring 3, a first O-ring 4, and a second O-ring 5 (as shown). Figure 2 , Figure 3 As shown), the telescopic ring 2 has multiple folds 21 in the middle section, the spring 3 is located inside the telescopic ring 2, and the first O-ring 4 and the second O-ring 5 are respectively located at both ends of the spring 3 inside the telescopic ring 2 (as shown). Figure 2 As shown), during use, the shaft is encapsulated inside a pump 1 with an impeller 10 at one end (as shown). Figure 1 As shown in the figure, conventional shaft seals are made of rubber and metal parts, which cannot come into contact with chemicals and are susceptible to corrosion. Furthermore, because the structure is a single-sided seal, it must rely on internal liquid for cooling. Often, due to lack of cooling during use, it will cause damage from idling, which greatly reduces its practicality. This is what those skilled in the art and consumers are eager to overcome. Utility Model Content

[0003] The technical problem this utility model aims to solve is that the conventional shaft seal structure includes a telescopic ring, a spring, a first O-ring, and a second O-ring. The telescopic ring has multiple folds in its middle section, and the spring is located inside the telescopic ring. Inside the telescopic ring, the first O-ring and the second O-ring are respectively located at both ends of the spring. Since conventional shaft seals are made of rubber and metal parts, they cannot come into contact with chemicals and are easily corroded. Their structure is a single-sided seal, which requires internal liquid cooling. Often, there is a lack of cooling during use, resulting in dry running damage, which greatly reduces their practicality.

[0004] This utility model is achieved as follows: an acid and alkali resistant mechanical telescopic double-shaft seal structure, comprising:

[0005] A telescopic ring component has a through-hole inside it, and the telescopic ring component has multiple telescopic folds in the middle section;

[0006] A spring is provided in the inner hole of the telescopic ring, with one end of the spring abutting against the inner hole at one end of the telescopic ring, and the other end of the spring abutting against the other end of the inner hole of the telescopic ring.

[0007] An inner O-ring is provided in the inner hole at the other end of the telescopic ring;

[0008] A gasket is provided at the other end of the telescopic ring;

[0009] A rotating ring is disposed at the other end of the gasket and connected to the telescopic ring component. The gasket is clamped between one end of the rotating ring and the other end of the telescopic ring component.

[0010] The telescopic ring is located in the inner hole of the telescopic fold and is equipped with the spring to generate compression and sealing; the telescopic ring, the spring, the gasket, and the rotating ring are made of high temperature resistant, acid and alkali resistant, and corrosion resistant materials, and are made of wear-resistant materials on both the inner and outer sides.

[0011] Furthermore, the thickness of the telescopic fold is less than the thickness of both sides of the telescopic ring.

[0012] Furthermore, the telescopic ring, the spring, the inner O-ring, the gasket, and the rotating ring are disposed on the lower section of a shaft in the center of a pump. The lower section of the shaft is provided with a bushing, and at least one impeller is fixedly disposed on the lower section of the bushing.

[0013] Furthermore, an external filter barrel is provided on the outside of the pump and has an inlet filter cover at the lower end. The inlet filter cover has multiple holes. The lower and upper ends of the external filter barrel respectively form an inlet and an outlet for acidic and alkaline chemical liquids to enter and exit. A motor front cover is provided at the upper end of the external filter barrel. A motor body is provided on the upper section of the shaft to drive its rotation. A motor rear cover is provided on the lower section of the shaft corresponding to the motor front cover. An iron sheet is provided around the motor body and between the motor front cover and the motor rear cover to cover and isolate the motor body. A pump rear cover is provided at the lower end of the motor rear cover and has a fixing ring in the center for the shaft to pass through and fix. The shaft is provided between the pump rear cover and the motor rear cover with a telescopic ring, a spring, an inner O-ring, a gasket, and a rotating ring. A medium is filled in the space covered by the pump rear cover and the motor rear cover on its outside. A pump cover is provided inside the lower section of the external filter barrel and around the lower section of the shaft.

[0014] Furthermore, the medium is lubricating oil, cooling water, or cooling oil.

[0015] Furthermore, the high-temperature resistant, acid and alkali resistant, and corrosion resistant material of the telescopic ring, the spring, the washer, and the rotating ring is Teflon.

[0016] Furthermore, the telescopic ring, the spring, the gasket, and the rotating ring are made of solid-state sintering silicon carbide (SSIC) on both the inner and outer sides.

[0017] The advantages of this utility model are as follows: This utility model includes a telescopic ring, a spring, an inner O-ring, a gasket, and a rotating ring; the telescopic ring has an inner hole and a telescopic fold in the middle section; the spring is located inside the telescopic fold; the inner O-ring is located at the other end of the telescopic ring; the gasket is located at the other end of the telescopic ring; and the rotating ring is located at the other end of the gasket. This achieves compression and sealing by utilizing the spring located in the inner hole of the telescopic ring within the telescopic fold; the telescopic ring, spring, gasket, and rotating ring are made of high-temperature resistant, acid and alkali resistant, and corrosion resistant materials, and both inner and outer surfaces are made of wear-resistant materials; the acid and alkali resistant mechanical telescopic double-shaft seal structure of this utility model is located in the lower section of the shaft in the center of the pump, the lower section of the shaft has a bushing, and the impeller is fixedly mounted on the lower section of the bushing; this effectively improves its sealing performance and durability, meeting the needs of advancement, practicality, and users, demonstrating its significant advantages. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a cross-sectional view of the combination of the shaft seal and pump installed in the pump, which is a common feature of existing products.

[0020] Figure 2 This is a cross-sectional view of the shaft seal assembly commonly used in existing products.

[0021] Figure 3 This is an exploded 3D view of the shaft seal commonly used in existing products.

[0022] Figure 4 This is a cross-sectional view of the acid and alkali resistant mechanical telescopic double shaft seal structure of this utility model installed in a pump.

[0023] Figure 5 This is a cross-sectional view of the present invention.

[0024] Figure 6 This is an exploded perspective view of the present invention.

[0025] Reference numerals: Pump 1, Impeller 10, Telescopic ring 2, Fold 21, Spring 3, First O-ring 4, Second O-ring 5, Telescopic ring 6, Telescopic fold 60, Inner hole 61, Spring 7, Inner O-ring 8, Gasket 9, Rotating ring 91, Pump 100, Outer filter barrel 1000, Shaft sleeve 1001, Impeller 1002, Shaft 101, Inlet filter cover 102, Hole 1021, Inlet 103, Outlet 104, Motor front cover 105, Motor body 106, Iron sheet 1061, Motor rear cover 107, Pump rear cover 108, Fixing ring 1081, Medium 1082, Pump cover 109. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figures 4 to 6 The figures shown are, respectively, a cross-sectional view of the acid and alkali resistant mechanical telescopic double shaft seal structure of this utility model installed in a pump, a cross-sectional view of the assembly of this utility model, and an exploded perspective view of this utility model; in a preferred embodiment of this embodiment, the acid and alkali resistant mechanical telescopic double shaft seal structure includes a telescopic ring 6, a spring 7, an inner O-ring 8, a gasket 9, and a rotating ring 91.

[0028] The aforementioned telescopic ring 6 has a through-hole 61 inside, and a plurality of telescopic folds 60 are provided in the middle section of the telescopic ring 6; the thickness of the telescopic folds 60 is less than the thickness of the sides of the telescopic ring 6, that is, the thickness of the telescopic folds 60 is thin (e.g., Figure 5 , Figure 6 (As shown).

[0029] The aforementioned spring member 7 is disposed in the inner hole 61 of the telescopic ring member 6 within the telescopic fold 60. One end of the spring member 7 abuts against the inner hole 61 at one end of the telescopic fold 60, and the other end of the spring member 7 abuts against the other end of the inner hole 61 of the telescopic fold 60. The spring member 7 can be compressed using its spring force, generating a compressive sealing force (e.g., ...). Figure 5 , Figure 6 (As shown).

[0030] The aforementioned inner O-ring 8 is located in the inner hole 61 at the other end of the telescopic ring 6 (e.g., Figure 5 , Figure 6 (As shown).

[0031] The aforementioned gasket 9 is located at the other end of the telescopic ring 6 (e.g., Figure 5 , Figure 6 (As shown).

[0032] The aforementioned rotating ring 91 is located at the other end of the gasket 9 and connected to the telescopic ring 6. The gasket 9 is clamped between one end of the rotating ring 91 and the other end of the telescopic ring 6. The spring 7 is located in the inner hole 61 of the telescopic ring 60 to generate compression and sealing. The telescopic ring 6, the spring 7, the gasket 9, and the rotating ring 91 are made of high-temperature resistant, acid and alkali resistant, and corrosion resistant materials, and both the inner and outer surfaces are made of wear-resistant materials (such as...). Figure 5 , Figure 6 (As shown).

[0033] Please refer to the following: Figure 4As shown, the acid and alkali resistant mechanical telescopic double-shaft seal structure of this utility model is provided in the lower section of a shaft 101 in the center of a pump 100 through the telescopic ring 6 with the inner hole 61, the spring 7, the inner O-ring 8, the gasket 9, and the rotating ring 91. A bushing 1001 is provided in the lower section of the shaft 101, and at least one impeller 1002 is fixedly provided in the lower section of the bushing 1001. An outer filter barrel 1000 is provided on the outside of the pump 100, and an inlet filter cover 102 is provided at the lower end. The inlet filter cover 102 has multiple holes 1021. The lower and upper ends of the outer filter barrel 1000 respectively form a structure for providing chemical solution to enter and exit. The filter has an inlet 103 and an outlet 104. Inside the outer filter 1000, at the upper end, is a motor front cover 105. The upper section of the shaft 101 has a motor body 106 that drives its rotation. The lower section of the shaft 101 has a motor rear cover 107 corresponding to the motor front cover 105. An iron sheet 1061 surrounds and isolates the motor body 106 between the motor front cover 105 and the motor rear cover 107. At the lower end of the motor rear cover 107 is a pump rear cover 108 with a fixing ring 1081 in the center for the shaft 101 to pass through and be fixed. The shaft 101 is located... The telescopic ring 6, the spring 7, the inner O-ring 8, the gasket 9, and the rotating ring 91 are provided between the pump rear cover 108 and the motor rear cover 107. A medium 1082, which is lubricating oil, cooling water, or cooling oil, is filled in the space enclosed by the pump rear cover 108 and the motor rear cover 107 on its outer side. However, this does not limit the present invention. A pump cover 109 is provided inside the lower section of the outer filter tank 1000 and outside the lower section of the shaft 101. The present invention, with the medium 1082, protects the telescopic ring 6, the spring 7, the inner O-ring 8, and the gasket 9. The rotating ring 91 and the wear-resistant heat supply are discharged into the medium 1082 inside the pump 100. The impeller 1002 rotates, and the acidic and alkaline chemical liquids are cooled by the acidic and alkaline chemical liquids through the inlet 103 and outlet 104. The high-temperature resistant, acid and alkali resistant, and corrosion resistant material of the telescopic ring 6, the spring 7, the gasket 9, and the rotating ring 91 is Teflon, but this does not limit the invention. The wear-resistant material on both the inner and outer sides of the telescopic ring 6, the spring 7, the gasket 9, and the rotating ring 91 is solid-state sintered silicon carbide. Sintering Silicon Carbide (SSIC), but not limited thereto; forming a dual shaft seal function, completely isolating from the internal chemical liquid of the pump 100, and can be cooled by the internal acid and alkali chemical liquid of the pump 100 or by external medium 1082, such as: lubricating oil, cooling water, cooling oil, thereby increasing the service life of the pump 100.

[0034] This utility model features an acid and alkali resistant mechanical telescopic double-shaft seal structure made of heat-resistant, oxidation-resistant, and acid and alkali-resistant Teflon material. The inner hole 61 of the telescopic ring 6 is into which the spring 7 is inserted. Because the telescopic fold 60 in the middle section of the telescopic ring 6 is thin, the spring 7 can compress and seal the structure. Both sides of the spring 7 are designed with wear-resistant materials, such as solid-phase sintered silicon carbide (SSIC), to form a double-shaft seal. This utility model is not corroded by contact with chemical liquids.

[0035] This utility model includes a telescopic ring 6, a spring 7, an inner O-ring 8, a washer 9, and a rotating ring 91. The telescopic ring 6 has an inner hole 61 and a telescopic fold 60 in its middle section. The spring 7 is located inside the telescopic fold 60 of the telescopic ring 6. The inner O-ring 8 is located at the other end of the telescopic ring 6. The washer 9 is located at the other end of the telescopic ring 6. The rotating ring 91 is located at the other end of the washer 9. Thus, by utilizing the telescopic ring 6 located in the inner hole 61 of the telescopic fold 60, the spring 7 is located inside the spring 7. The spring 7 generates compression and sealing; the telescopic ring 6, the spring 7, the gasket 9, and the rotating ring 91 are made of high-temperature resistant, acid and alkali resistant, and corrosion resistant materials, and both the inner and outer sides are made of wear-resistant materials; the lower section of the shaft 101 in the center of the pump 100 is provided with the bushing 1001, and the impeller 1002 is fixedly provided at the lower section of the bushing 1001; it effectively improves its sealing performance and durability, meets the needs of progress, practicality and users, and its benefits are evident.

[0036] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An acid and alkali resistant mechanical telescopic double-shaft seal structure, characterized in that, include: A telescopic ring component has a through-hole inside it, and the telescopic ring component has multiple telescopic folds in the middle section; A spring is provided in the inner hole of the telescopic ring, with one end of the spring abutting against the inner hole at one end of the telescopic ring, and the other end of the spring abutting against the other end of the inner hole of the telescopic ring. An inner O-ring is provided in the inner hole at the other end of the telescopic ring; A gasket is provided at the other end of the telescopic ring; A rotating ring is disposed at the other end of the gasket and connected to the telescopic ring component. The gasket is clamped between one end of the rotating ring and the other end of the telescopic ring component. The telescopic ring is located in the inner hole of the telescopic fold and is equipped with the spring to generate compression and sealing; the telescopic ring, the spring, the gasket, and the rotating ring are made of high temperature resistant, acid and alkali resistant, and corrosion resistant materials, and are made of wear-resistant materials on both the inner and outer sides.

2. The acid and alkali resistant mechanical telescopic double-shaft seal structure according to claim 1, characterized in that: The thickness of the telescopic fold is less than the thickness of the two sides of the telescopic ring.

3. The acid and alkali resistant mechanical telescopic double-shaft seal structure according to claim 1, characterized in that: The telescopic ring, the spring, the inner O-ring, the gasket, and the rotating ring are located on the lower section of a shaft in the center of a pump. The lower section of the shaft is provided with a bushing, and at least one impeller is fixedly provided on the lower section of the bushing.

4. The acid and alkali resistant mechanical telescopic double-shaft seal structure according to claim 3, characterized in that: An external filter barrel is provided on the outside of the pump, and an inlet filter cover is provided at the lower end. The inlet filter cover has multiple holes. The lower end and upper end of the external filter barrel form an inlet and an outlet for acidic and alkaline chemical liquids to enter and exit, respectively. A motor front cover is provided at the upper end of the external filter barrel. A motor body is provided on the upper section of the shaft to drive its rotation. A motor rear cover is provided on the lower section of the shaft corresponding to the motor front cover. An iron plate is provided around the motor body and between the motor front cover and the motor rear cover to cover and isolate the motor body. A pump rear cover is provided at the lower end of the motor rear cover and has a fixing ring in the center for the shaft to pass through and fix. The shaft is provided between the pump rear cover and the motor rear cover, and a telescopic ring, a spring, an inner O-ring, a gasket and a rotating ring are provided. A medium is filled in the space covered by the pump rear cover and the motor rear cover on its outside. A pump cover is provided inside the lower section of the external filter barrel and around the lower section of the shaft.

5. The acid and alkali resistant mechanical telescopic double-shaft seal structure according to claim 4, characterized in that: The medium is lubricating oil, cooling water, or cooling oil.

6. The acid and alkali resistant mechanical telescopic double-shaft seal structure according to claim 1, characterized in that: The telescopic ring, the spring, the gasket, and the rotating ring are made of Teflon, a material that is resistant to high temperatures, acids and alkalis, and corrosion.

7. The acid and alkali resistant mechanical telescopic double-shaft seal structure according to claim 1, characterized in that: The telescopic ring, the spring, the gasket, and the rotating ring are made of solid-phase sintered silicon carbide on both the inner and outer sides.

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