Split type packaging mechanical sealing device

Abstract

The utility model discloses a split type packaging mechanical sealing device which comprises a shaft body, an upper shaft sleeve, a lower shaft sleeve, a first connecting piece, a driving side shaft nut, a second connecting piece and a driving side sleeve nut. The upper shaft sleeve and the lower shaft sleeve are respectively arranged on the shaft body, the first connecting piece is arranged between the upper shaft sleeve and the lower shaft sleeve, and the driving side shaft nut is sleeved on the shaft body and is in threaded connection with the lower shaft sleeve. According to the utility model, split packaging sealing is adopted, after combination installation, the precision is equivalent to the overall precision, the operation precision and the working precision are kept equivalent, the use performance is reliable, the quality is stable, the installation, the disassembly and the operation are convenient, and the maintenance time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a split type containerized mechanical seal device. Background Art

[0002] Mechanical seals for pumps rely on elastic components (such as springs or bellows, or a combination of springs and bellows) and the pressure of the sealing medium to generate appropriate compression force on the contact surfaces (end faces) of the rotating dynamic ring and static ring, so that the two end faces fit tightly and maintain an extremely thin layer of liquid mold between the end faces to achieve the purpose of sealing. Container seals are very popular because they do not require complicated measurements, calculations, and adjustments during installation. However, in some passing scenes with narrow operating spaces, it is impossible to perform overall container sealing. When performing bulk sealing, it is necessary to re-measure, calculate, and adjust and correct, which makes operation difficult and installation efficiency low. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0004] In order to solve the above problems, the present application provides a split type containerized mechanical seal device, including: a shaft body, an upper shaft sleeve, a lower shaft sleeve, a first connecting piece, a drive side shaft nut, a second connecting piece and a drive side sleeve nut;

[0005] The upper sleeve and the lower sleeve are respectively arranged on the shaft body, the first connecting piece is arranged between the upper sleeve and the lower sleeve, the driving side shaft nut is sleeved on the shaft body and threadedly connected with the lower sleeve, the second connecting piece is threadedly connected with the driving side shaft nut, the driving side sleeve nut is connected with the second connecting piece, and the thread direction between the driving side shaft nut and the lower sleeve is opposite to the thread direction between the second connecting piece and the driving side shaft nut.

[0006] Optionally, it also includes a rotating ring, which is sleeved on the outside of the lower sleeve, the rotating ring is located on one side of the shoulder of the lower sleeve, and a first transmission member is arranged between the rotating ring and the lower sleeve.

[0007] Optionally, the ring seat is sleeved on the lower shaft sleeve, the ring seat is located outside the rotating ring, and a second transmission member is provided between the ring seat and the lower shaft sleeve.

[0008] Optionally, it also includes a pump cover and a sealing cover, a third connecting member is arranged between the sealing cover and the pump cover, and the sealing cover is sleeved on the outer side of the lower shaft sleeve.

[0009] Optionally, it also includes a floating ring group, which is sleeved on the outer side of the lower shaft and part of the sealing cover, and the floating ring group is located between the sealing cover and the rotating ring. The floating ring group can move along the axis of the shaft on the part of the sealing cover, and an elastic member and an anti-rotation pin are provided between the sealing cover and the floating ring group.

[0010] Optionally, a first sealing member is further included, a sealing cavity is opened on a side of the floating ring assembly facing the sealing gland, and the first sealing member is arranged in the sealing cavity.

[0011] Optionally, a support ring is provided between the upper sleeve and the shaft body.

[0012] Optionally, a second seal is provided between the lower sleeve and the shaft body, a third seal is provided between the ring seat and the lower sleeve, and a fourth seal is provided between the sealing gland and the pump cover.

[0013] Optionally, the first seal, the second seal, the third seal and the fourth seal are all O-rings.

[0014] Optionally, the first connecting member, the second connecting member and the third connecting member are all screws.

[0015] Beneficial Effects

[0016] A split-type containerized mechanical seal device provided in the embodiment of the utility model is a containerized seal with a split body. After combined installation, the accuracy is equivalent to the overall accuracy, the operating accuracy and the working accuracy are maintained equivalent, the performance is reliable and the quality is stable, and it is easy to install and disassemble, easy to operate, and saves maintenance time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a folding structure diagram of the bracket assembly of the utility model.

[0018] [Description of Reference Numerals]

[0019] 1. Shaft body; 2. Upper sleeve; 3. Lower sleeve; 4. First connecting piece; 5. Drive side shaft nut; 6. Second connecting piece; 7. Drive side sleeve nut; 8. Rotating ring; 9. First transmission piece; 10. Ring seat; 11. Second transmission piece; 12. Pump cover; 13. Sealing gland; 14. Third connecting piece; 15. Floating ring assembly; 16. Elastic piece; 17. First sealing piece; 18. Support ring; 19. Second sealing piece; 20. Third sealing piece; 21. Fourth sealing piece. DETAILED DESCRIPTION

[0020] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0021] See also Figure 1 As shown, according to one embodiment of the present application, a split type containerized mechanical seal device is provided, comprising: a shaft body 1, an upper shaft sleeve 2, a lower shaft sleeve 3, a first connecting member 4, a drive side shaft nut 5, a second connecting member 6 and a drive side sleeve nut 7;

[0022] The upper sleeve 2 and the lower sleeve 3 are respectively arranged on the shaft body 1, the first connecting member 4 is arranged between the upper sleeve 2 and the lower sleeve 3, the driving side shaft nut 5 is sleeved on the shaft body 1 and is threadedly connected with the lower sleeve 3, the second connecting member 6 is threadedly connected with the driving side shaft nut 5, the driving side sleeve nut 7 is connected with the second connecting member 6, and the thread direction between the driving side shaft nut 5 and the lower sleeve 3 is opposite to the thread direction between the second connecting member 6 and the driving side shaft nut 5.

[0023] Specifically, by splitting the sleeve into two detachable sections, the upper sleeve 2 and the lower sleeve 3, when some rotating equipment for conveying liquids cannot be installed with an integral container seal, the split lower sleeve 3 and the upper sleeve 2 can be split and assembled and installed on the shaft body 1. After the assembled installation, the overall accuracy is equivalent, the operating accuracy and working accuracy remain equivalent, the performance is reliable, the quality is stable, and the installation and disassembly are convenient, saving maintenance time; the first connecting piece 4 is installed between the upper sleeve 2 and the lower sleeve 3, and the split installation is combined into one, which is convenient for the installation and disassembly between the upper sleeve 2 and the lower sleeve 3; the direction of the threaded connection between the drive side shaft nut 5 and the lower sleeve 3 is opposite to the direction of the threaded connection between the second connecting piece 6 and the drive side sleeve nut 7, which can achieve the fixation of the drive side shaft nut 5 and reduce the possibility of loosening during the sealing process.

[0024] The first connecting member 4 and the second connecting member 6 are both screws.

[0025] It also includes a rotating ring 8, which is sleeved on the outside of the lower sleeve 3, and is located on one side of the shoulder of the lower sleeve 3. A first transmission member 9 is provided between the rotating ring 8 and the lower sleeve 3.

[0026] The ring seat 10 is sleeved on the lower sleeve 3 . The ring seat 10 is located outside the rotating ring 8 . A second transmission member 11 is provided between the ring seat 10 and the lower sleeve 3 .

[0027] Specifically, the rotating ring 8 and the ring seat 10 are both sleeved on the lower sleeve 3, the ring seat 10 is located on the outside of the rotating ring 8, the first transmission member 9 is installed between the lower sleeve 3 and the rotating ring 8, and the second transmission member 11 is installed between the lower sleeve 3 and the ring seat 10. Through the arrangement of the first transmission member 9 and the second transmission member 11, the ring seat 10 and the rotating ring 8 can rotate together with the lower sleeve 3; the first transmission member 9 and the second transmission member 11 are both transmission pins; the ring seat 10 can rotate through the second transmission member 11 to transport forced sealing water circulation to the outside for cooling.

[0028] It also includes a pump cover 12 and a sealing gland 13 . A third connecting member 14 is provided between the sealing gland 13 and the pump cover 12 . The sealing gland 13 is sleeved on the outer side of the lower shaft sleeve 3 .

[0029] Specifically, the sealing gland 13 is connected to the pump cover 12 via a third connecting member 14 , and the pump cover 12 can fix the sealing gland 13 , and the sealing gland 13 does not rotate with the shaft body 1 .

[0030] The third connecting member 14 is a screw.

[0031] It also includes a floating ring group 15, which is sleeved on the outer side of the lower shaft body 1 and part of the sealing cover 13. The floating ring group 15 is located between the sealing cover 13 and the rotating ring 8. The floating ring group 15 can move along the axis of the shaft body 1 on the part of the sealing cover 13. An elastic member 16 and an anti-rotation pin are provided between the sealing cover 13 and the floating ring group 15.

[0032] The first sealing member 17 is also included. A sealing cavity is formed on the side of the floating ring assembly 15 facing the sealing gland 13 . The first sealing member 17 is disposed in the sealing cavity.

[0033] Specifically, the floating ring group 15 is located between the sealing cover 13 and the rotating ring 8. An anti-rotation pin is installed between the sealing cover 13 and the floating ring group 15 to prevent the floating ring group 15 from rotating with the lower sleeve 3. The elastic member 16 is installed between the sealing cover 13 and the floating ring group 15. The elastic member 16 is a spring, which can apply axial force to the floating ring group 15 so that it can fit tightly with the rotating ring 8 to improve the sealing performance. Moreover, when the floating ring group 15 moves axially along the sealing cover 13, the first sealing member 17 at the bottom will move axially in the sealing cavity to achieve continuous sealing with stronger sealing performance.

[0034] Among them, the sealing cover 13, the floating ring group 15, the elastic member 16 and the first sealing member 17 are non-rotating parts, and the lower sleeve 3, the rotating ring 8, the ring seat 10, etc. are rotating parts. The boundary between the two can maintain a tight fit and can slide, reducing the probability of leakage of the pumped working fluid to the outside, and realizing the shaft end sealing of the water pump in the working state.

[0035] A support ring 18 is provided between the upper sleeve 2 and the shaft body 1 .

[0036] Specifically, the support ring 18 is installed between the upper sleeve 2 and the shaft body 1 to improve the sealing performance between the two parts.

[0037] The support ring 18 is made of polytetrafluoroethylene, which has the characteristics of low friction coefficient and strong corrosion resistance.

[0038] A second seal 19 is provided between the lower sleeve 3 and the shaft body 1 , a third seal 20 is provided between the ring seat 10 and the lower sleeve 3 , and a fourth seal 21 is provided between the sealing gland 13 and the pump cover 12 .

[0039] Specifically, by providing the second seal 19, the third seal 20 and the fourth seal 21, the sealing performance between the lower sleeve 3 and the shaft body 1, between the ring seat 10 and the lower sleeve 3, and between the sealing cover 13 and the end cover can be improved, thereby improving the overall sealing after installation.

[0040] The first sealing member 17 , the second sealing member 19 , the third sealing member 20 and the fourth sealing member 21 are all O-rings.

[0041] The first connecting member 4, the second connecting member 6 and the third connecting member 14 are all screws.

[0042] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0045] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0046] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A split type containerized mechanical seal device, characterized in that: include: A shaft body (1), an upper shaft sleeve (2), a lower shaft sleeve (3), a first connecting piece (4), a drive side shaft nut (5), a second connecting piece (6) and a drive side sleeve nut (7); The upper shaft sleeve (2) and the lower shaft sleeve (3) are respectively arranged on the shaft body (1); the first connecting member (4) is arranged between the upper shaft sleeve (2) and the lower shaft sleeve (3); the driving side shaft nut (5) is sleeved on the shaft body (1) and is threadedly connected to the lower shaft sleeve (3); the second connecting member (6) is threadedly connected to the driving side shaft nut (5); the driving side sleeve nut (7) is connected to the second connecting member (6); and the thread direction between the driving side shaft nut (5) and the lower shaft sleeve (3) is opposite to the thread direction between the second connecting member (6) and the driving side shaft nut (5).

2. The split type containerized mechanical seal device according to claim 1, characterized in that: It also comprises a rotating ring (8), wherein the rotating ring (8) is sleeved on the outside of the lower sleeve (3), the rotating ring (8) is located on one side of the shoulder of the lower sleeve (3), and a first transmission member (9) is provided between the rotating ring (8) and the lower sleeve (3).

3. The split type containerized mechanical seal device according to claim 2, characterized in that: It also comprises a ring seat (10), wherein the ring seat (10) is sleeved on the lower shaft sleeve (3), the ring seat (10) is located outside the rotating ring (8), and a second transmission member (11) is arranged between the ring seat (10) and the lower shaft sleeve (3).

4. The split type containerized mechanical seal device according to claim 3, characterized in that: It also comprises a pump cover (12) and a sealing gland (13), wherein a third connecting member (14) is arranged between the sealing gland (13) and the pump cover (12), and the sealing gland (13) is sleeved on the outer side of the lower shaft sleeve (3).

5. The split type containerized mechanical seal device according to claim 4, characterized in that: The invention also comprises a floating ring group (15), wherein the floating ring group (15) is sleeved on the outer side of the lower sleeve (3), the floating ring group (15) is located between the sealing cover (13) and the rotating ring (8), the floating ring group (15) can move along the axis of the shaft body (1) on the partial sealing cover (13), and an elastic member (16) and an anti-rotation pin are provided between the sealing cover (13) and the floating ring group (15).

6. The split type containerized mechanical seal device according to claim 5, characterized in that: It also comprises a first sealing member (17); a sealing cavity is formed on the side of the floating ring group (15) facing the sealing gland (13); and the first sealing member (17) is arranged in the sealing cavity.

7. The split type containerized mechanical seal device according to claim 6, characterized in that: A support ring (18) is provided between the upper shaft sleeve (2) and the shaft body (1).

8. The split type containerized mechanical seal device according to claim 7, characterized in that: A second seal (19) is provided between the lower shaft sleeve (3) and the shaft body (1), a third seal (20) is provided between the ring seat (10) and the lower shaft sleeve (3), and a fourth seal (21) is provided between the sealing gland (13) and the pump cover (12).

9. The split type containerized mechanical seal device according to claim 8, characterized in that: The first sealing member (17), the second sealing member (19), the third sealing member (20) and the fourth sealing member (21) are all O-rings.

10. The split type containerized mechanical seal device according to claim 9, characterized in that: The first connecting member (4), the second connecting member (6) and the third connecting member (14) are all screws.

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