CN223076237U - Double-end-face integrated mechanical seal - Google Patents
Double-end-face integrated mechanical seal Download PDFInfo
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- CN223076237U CN223076237U CN202422424070.1U CN202422424070U CN223076237U CN 223076237 U CN223076237 U CN 223076237U CN 202422424070 U CN202422424070 U CN 202422424070U CN 223076237 U CN223076237 U CN 223076237U
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- ring
- sealing seat
- shaft sleeve
- mechanical seal
- stationary ring
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Abstract
本实用新型提供了一种双端面集装式机械密封，属于机械密封技术领域，包括：轴套，轴套上固定连接有第一动环以及第二动环，第一动环和第二动环分别靠近轴套的两端；密封座，密封座套设于轴套上，密封座内安装有第一静环和第二静环，第一静环和第二静环分别与第一动环和第二动环密封贴合，密封座设置有用于与泵腔内壁连接的法兰部，法兰部靠近轴套的一端，法兰部设置有若干螺栓，螺栓被设置为其杆部朝向大气侧方向；本实用新型的有益效果为：提供了一种能够从泵腔内侧方向进行安装的双端面集装式机械密封，密封座的法兰部能够与泵腔的内壁通过螺丝连接在一起，且这种机械密封的布局能够使其大部分组件位于大气侧(泵腔外部)。
The utility model provides a double-end face assembled mechanical seal, which belongs to the technical field of mechanical seals, and comprises: a shaft sleeve, on which a first moving ring and a second moving ring are fixedly connected, and the first moving ring and the second moving ring are respectively close to two ends of the shaft sleeve; a sealing seat, the sealing seat sleeve is arranged on the shaft sleeve, and a first static ring and a second static ring are installed in the sealing seat, and the first static ring and the second static ring are respectively sealed with the first moving ring and the second moving ring, and the sealing seat is provided with a flange part for connecting with the inner wall of a pump chamber, the flange part is close to one end of the shaft sleeve, and the flange part is provided with a plurality of bolts, and the bolts are arranged with their rods facing the atmosphere side; the beneficial effects of the utility model are as follows: a double-end face assembled mechanical seal that can be installed from the inner side of the pump chamber is provided, the flange part of the sealing seat can be connected to the inner wall of the pump chamber by screws, and the layout of this mechanical seal can make most of its components located on the atmosphere side (outside the pump chamber).
Description
Technical Field
The utility model belongs to the technical field of mechanical sealing, and relates to a double-end-face integrated mechanical seal.
Background
A mechanical seal is a device for preventing leakage of fluid or gas, and is mainly used in rotary devices such as pumps, compressors, agitators, and the like. The mechanical seal consists of two main parts, a stationary ring (mounted on the equipment housing) and a moving ring (rotating with the shaft). The two rings are in intimate contact and form a sealing surface. A double-ended mechanical seal is a device having two sets of stationary rings and two sets of moving rings.
When the existing double-end-face container type mechanical seal is installed, the installation can only be started from the outer side of the pump cavity, most components of the mechanical seal are located in the pump cavity, and usually only the fastening ring is located on the atmosphere side. However, some special devices require that the mechanical seal must be installed from inside the pump chamber and that most of the components of the mechanical seal be located outside the pump chamber. The existing mechanical seal design cannot meet the special requirement, so that a certain improvement space is left.
Disclosure of utility model
The utility model aims to solve the problems in the prior art and provides a double-end-face integrated mechanical seal.
The utility model can be realized by the following technical scheme that the double-end-face integrated mechanical seal comprises:
The shaft sleeve is fixedly connected with a first moving ring and a second moving ring, and the first moving ring and the second moving ring are respectively close to two ends of the shaft sleeve;
The sealing seat is sleeved on the shaft sleeve, a first static ring and a second static ring are arranged in the sealing seat, the first static ring and the second static ring are respectively and hermetically attached to the first dynamic ring and the second dynamic ring, the sealing seat is provided with a flange part used for being connected with the inner wall of the pump cavity, the flange part is close to one end of the shaft sleeve, the flange part is provided with a plurality of bolts, and the bolts are arranged in the direction that the rod part faces the atmosphere side.
Preferably, the flange portion is provided with a plurality of stepped holes, the number of the stepped holes is the same as that of the bolts and the stepped holes are arranged in a one-to-one correspondence manner, the large hole portions of the stepped holes are arranged close to the medium side, the small hole portions of the stepped holes are arranged close to the atmosphere side, the head portions of the bolts are located in the large hole portions of the stepped holes, and the rod portions of the bolts are located in the small hole portions of the stepped holes.
Preferably, the first stationary ring and the second stationary ring are adjacently arranged, a plurality of springs are further installed in the sealing seat, the springs encircle the shaft sleeve, two ends of each spring are respectively in interference connection with the first stationary ring and the second stationary ring, and the springs respectively apply sealing pressure towards the first movable ring and the second movable ring to the first stationary ring and the second stationary ring.
Preferably, the sealing seat is provided with a lower water inlet and an upper water outlet, and the lower water inlet and the upper water outlet are communicated with a gap between the shaft sleeve and the sealing seat.
Preferably, the device further comprises two diversion sleeves, wherein the two diversion sleeves are arranged between the shaft sleeve and the sealing seat, a gap is reserved between the two diversion sleeves, the lower water inlet and the upper water outlet are aligned to the gap between the two diversion sleeves, the gap between the shaft sleeve and the sealing seat is formed into a cleaning path through the two diversion sleeves, and the cleaning path sequentially passes through the first movable ring, the first stationary ring, the second movable ring, the second stationary ring and the upper water outlet.
Preferably, auxiliary sealing rings are arranged on the inner peripheral surface of the shaft sleeve, between the shaft sleeve and the first movable ring, between the shaft sleeve and the second movable ring, between the sealing seat and the first stationary ring and between the sealing seat and the second stationary ring.
Compared with the prior art, the utility model has the beneficial effects that:
1. a double-end face cartridge type mechanical seal capable of being mounted from the inside direction of a pump chamber is provided, a flange part of a seal seat can be connected with the inner wall of the pump chamber through screws, and most of components of the mechanical seal can be located on the atmosphere side (outside the pump chamber) through the layout of the mechanical seal.
2. The stem portion of the bolt needs to face the atmosphere side for the flange portion is located in the pump cavity, based on the requirements, the stepped hole is designed to be large in size and close to the medium side, and the small hole portion faces the atmosphere side, so that the stem portion of the bolt can only face the atmosphere side, and the purpose that the mechanical seal is installed from the inner side of the pump cavity is achieved.
3. The lower water inlet and the upper water outlet are actually the inlet and outlet of the purge cooling channel. After the mechanical seal is in place, the lower water inlet is positioned below the seal seat, and the upper water outlet is positioned above the seal seat. The main purpose of this design is to avoid failure of the mechanical seal due to dry grinding due to incorrect operation of the shut-off inlet valve.
Drawings
Fig. 1 is a schematic structural view of a double-end-face cartridge type mechanical seal of the present utility model.
Fig. 2 is a partial schematic view of a two-sided cartridge type mechanical seal of the present utility model.
In the figure, 100 parts of shaft sleeve, 110 parts of first movable ring, 120 parts of second movable ring, 200 parts of sealing seat, 210 parts of first static ring, 220 parts of second static ring, 230 parts of flange part, 240 parts of stepped hole, 250 parts of spring, 260 parts of lower water inlet, 270 parts of upper water outlet, 280 parts of guide sleeve, 300 parts of bolt.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
1-2, A double-end-face integrated mechanical seal comprises a shaft sleeve 100, a first moving ring 110 and a second moving ring 120 fixedly connected to the shaft sleeve 100, a sealing seat 200, wherein the first moving ring 110 and the second moving ring 120 are respectively close to two ends of the shaft sleeve 100, the sealing seat 200 is sleeved on the shaft sleeve 100, a first static ring 210 and a second static ring 220 are installed in the sealing seat 200, the first static ring 210 and the second static ring 220 are respectively in sealing fit with the first moving ring 110 and the second moving ring 120, the sealing seat 200 is provided with a flange part 230 for being connected with the inner wall of a pump cavity, the flange part 230 is close to one end of the shaft sleeve 100, the flange part 230 is provided with a plurality of bolts 300, and the bolts 300 are arranged with the rod parts facing the atmosphere side direction.
The design aims at solving the problems that the traditional double-end-face integrated mechanical seal can only be installed from the outer side of the pump cavity and most components are positioned in the pump cavity. The shaft sleeve 100 is designed to be fixedly connected with two first movable rings 110 and two second movable rings 120, the first movable rings 110 and the second movable rings 120 are fixedly connected with the shaft sleeve 100 in the circumferential direction through driving pins, the first movable rings 110 and the second movable rings 120 are respectively located near two ends of the shaft sleeve 100, the sealing seat 200 is sleeved on the shaft sleeve 100, the first stationary ring 210 and the second stationary ring 220 are internally installed, the first stationary ring 210 and the second stationary ring 220 respectively form sealing surfaces with the first movable rings 110 and the second movable rings 120 on the shaft sleeve 100, two sealing surfaces are arranged between the shaft sleeve 100 and the sealing seat 200, and no fluid leakage is ensured in the running process of equipment. The flange 230 of the seal seat 200 is fixedly connected to the inner side of the pump chamber, and the bolt 300 is oriented with the stem facing the atmosphere, i.e., the stem of the bolt 300 faces the outer side of the pump chamber, which means that the mechanical seal can be installed from the inner side of the pump chamber. When installed, the present mechanical seal is threaded out of the pump chamber until the flange portion 230 contacts the inner wall of the pump chamber, and then the bolt 300 is tightened, at which time most of the components of the mechanical seal are located outside the pump chamber (the atmosphere side).
A double-end face cartridge type mechanical seal capable of being mounted from the inside of a pump chamber is provided, a flange portion 230 of a seal holder 200 can be screwed to the inside wall of the pump chamber, and the mechanical seal is arranged so that most of the components thereof are located on the atmosphere side (outside the pump chamber).
As shown in fig. 1-2, on the basis of the above embodiment, the flange portion 230 is provided with a plurality of stepped holes 240, the number of the stepped holes 240 is the same as the number of the bolts and are arranged in one-to-one correspondence, the large hole portions of the stepped holes 240 are arranged near the medium side, the small hole portions of the stepped holes 240 are arranged near the atmosphere side, the head portions of the bolts are located in the large hole portions of the stepped holes 240, and the rod portions of the bolts are located in the small hole portions of the stepped holes 240.
In the conventional mechanical seal, the stem of the bolt 300 faces the medium side, i.e. the flange structure is connected to the outer wall of the pump chamber, whereas in the present embodiment, the stem of the bolt 300 needs to face the atmosphere side, so that the flange 230 is located in the pump chamber, based on the above requirement, the stepped hole 240 is designed such that the large hole portion is close to the medium side, and the small hole portion is close to the atmosphere side, so that the stem of the bolt 300 faces only the atmosphere side, thereby achieving the purpose of installing the mechanical seal from the inside of the pump chamber.
As shown in fig. 1, on the basis of the above embodiment, the first stationary ring 210 and the second stationary ring 220 are adjacently disposed, a plurality of springs 250 are further installed in the seal seat 200, each spring 250 is disposed around the shaft sleeve 100, two ends of the spring 250 are respectively in abutting connection with the first stationary ring 210 and the second stationary ring 220, and the spring 250 applies sealing pressure to the first stationary ring 210 and the second stationary ring 220 toward the first movable ring 110 and the second movable ring 120, respectively.
In order to ensure a continuous contact pressure between the movable ring and the stationary ring, thereby maintaining sealing performance, a plurality of springs 250 are installed in the seal housing 200. The springs 250 are in contact with the first and second stationary rings 210 and 220 at both ends thereof, respectively, and apply sealing pressure to the first and second stationary rings 210 and 220, and the springs 250 are designed with small springs 250, so that the sealing pressure is provided more uniformly.
As shown in fig. 1-2, on the basis of the above embodiment, the sealing seat 200 is provided with a lower water inlet 260 and an upper water outlet 270, and both the lower water inlet 260 and the upper water outlet 270 are communicated with the gap between the shaft sleeve 100 and the sealing seat 200.
The lower water inlet 260 and the upper water outlet 270 are actually inlets and outlets of the purge cooling channel. After the mechanical seal is in place, the lower water inlet 260 is located below the seal housing 200 and the upper water outlet 270 is located above the seal housing 200. The main purpose of this design is to avoid failure of the mechanical seal due to dry grinding due to incorrect operation of the shut-off inlet valve. Specifically, even if the water inlet valve is closed by mistake, water can still remain in the mechanical seal because the water outlet is positioned above, so that the movable ring and the stationary ring are cooled and lubricated to a certain extent. If the water outlet is designed below, water will flow directly from within the mechanical seal, possibly resulting in dry grinding between the moving and stationary rings. Such a design helps to enhance the safety and reliability of the mechanical seal, reducing the risk of equipment damage due to human factors.
As shown in fig. 1-2, on the basis of the above embodiment, the present invention further includes two diversion sleeves 280, wherein the two diversion sleeves 280 are disposed between the shaft sleeve 100 and the sealing seat 200, a gap remains between the two diversion sleeves 280, the lower water inlet 260 and the upper water outlet 270 are aligned to the gap between the two diversion sleeves 280, a cleaning path is formed at the gap between the shaft sleeve 100 and the sealing seat 200 through the two diversion sleeves 280, and the cleaning path sequentially passes through the region where the first movable ring 110 and the first stationary ring 210, the region where the second movable ring 120 and the second stationary ring 220 are located from the lower water inlet 260, and is discharged through the upper water outlet 270.
The guide sleeve 280 divides the gap between the sleeve 100 and the seal seat 200 into an outer channel and an inner channel, and the inner channel and the outer channel are communicated with the region where the stationary ring is located through the movable ring. The cleaning fluid enters the outer channel from the lower water inlet 260, then enters the areas of the first movable ring 110 and the first static ring 210 to cool and rinse the first movable ring 110 and the first static ring 210, then enters the areas of the second movable ring 120 and the second static ring 220 to cool and rinse the second movable ring 120 and the second static ring 220, and finally is discharged from the upper water outlet 270.
In addition to the above embodiments, auxiliary seal rings are provided on the inner peripheral surface of the sleeve 100, between the sleeve 100 and the first movable ring 110, between the sleeve 100 and the second movable ring 120, between the seal holder 200 and the first stationary ring 210, and between the seal holder 200 and the second stationary ring 220.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present utility model) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.
Furthermore, descriptions such as those referred to herein as "first," "second," "a," and the like are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "fixed," and the like are to be construed broadly, and for example, "fixed" may be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422424070.1U CN223076237U (en) | 2024-10-09 | 2024-10-09 | Double-end-face integrated mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422424070.1U CN223076237U (en) | 2024-10-09 | 2024-10-09 | Double-end-face integrated mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223076237U true CN223076237U (en) | 2025-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422424070.1U Active CN223076237U (en) | 2024-10-09 | 2024-10-09 | Double-end-face integrated mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223076237U (en) |
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2024
- 2024-10-09 CN CN202422424070.1U patent/CN223076237U/en active Active
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