CN213298827U - Magnetic fluid sealing device for stirring shaft - Google Patents
Magnetic fluid sealing device for stirring shaft Download PDFInfo
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- CN213298827U CN213298827U CN202022443261.4U CN202022443261U CN213298827U CN 213298827 U CN213298827 U CN 213298827U CN 202022443261 U CN202022443261 U CN 202022443261U CN 213298827 U CN213298827 U CN 213298827U
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Abstract
The utility model belongs to the technical field of bioreactor accessories, in particular to a magnetic fluid sealing device for a stirring shaft, which comprises a sealing shell, wherein the outer side of the upper end surface of the sealing shell is fixedly connected with an installation convex ring, the upper end surface of the installation convex ring is provided with an upper installation cover, the lower end surface of the sealing shell is embedded with a lower installation cover, the lower end surface of the upper installation cover is provided with a slot, the inner side wall of the installation convex ring is fixedly connected with a sealing position-limiting part, the upper end of the sealing position-limiting part extends to the inside of the slot, a cavity is formed between the outer side wall of the sealing position-limiting part and the inner side wall of the installation, thereby reached the convenience and sealed effect of carrying out the gap that forms the installation between installation bulge loop and the last installation lid of sealed casing upper end, prevented that steam and water from getting into in the sealed casing through the gap, further improved this magnetic fluid sealing device's sealing performance.
Description
Technical Field
The utility model relates to a bioreactor accessory technical field, concretely relates to magnetic current body sealing device for (mixing) shaft.
Background
Three sealing methods are commonly used in bioreactors: the mechanical seal is generally in a double-seal mode of a John Kelan mechanical structure to reduce the pollution probability, but zero leakage is difficult to realize, uncertainty factors are brought to guarantee process sterility, the magnetic seal completes a transmission process under the action of inner and outer magnets, the problem of bacterial contamination caused by the mechanical seal is thoroughly solved, power transmission cannot be stably completed for a large bioreactor, and the double problems of the mechanical seal and the magnetic seal can be solved through the magnetic fluid seal.
CN208605629U discloses a magnetic fluid sealing device, which cannot seal the gap formed between the mounting convex ring at the upper end of the sealing housing and the upper mounting cover, so that steam and water easily enter the sealing housing through the gap, thereby reducing the sealing performance of the magnetic fluid sealing device.
Disclosure of Invention
For solving the problem that provides among the above-mentioned background art, the utility model provides a magnetic fluid sealing device for (mixing) shaft has the gap that the installation formed between convenient installation bulge loop and the last installation lid to the seal housing upper end and seals, prevents that steam and water from getting into in the seal housing through the gap, has further improved this magnetic fluid sealing device's sealing performance's characteristics.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a magnetic current body sealing device for (mixing) shaft, including seal housing, seal housing's up end outside fixedly connected with installation bulge loop, the installation lid is installed to the up end of installation bulge loop, seal housing's lower terminal surface embedding is provided with down the installation lid, the lower terminal surface through connection of installation lid has the magnetic conduction transmission shaft down, the (mixing) shaft is installed to the up end of magnetic conduction transmission shaft, the upper end of (mixing) shaft is run through the installation lid and is extended to the top of installation lid, two bearings and magnetic current body seal bodies are installed to the lateral wall of magnetic conduction transmission shaft, the magnetic current body seal body be located between two bearings and with be located the bearing lower terminal surface. The slot has been seted up to the lower terminal surface of going up the installation lid, and the sealed locating part of the inside wall fixedly connected with of installation bulge loop, the upper end of sealed locating part extend to the inside of slot, and vacuole formation between the lateral wall of sealed locating part and the inside wall of installation bulge loop, the inside packing of cavity has annular tetrafluoro sealing washer.
In order to further play sealed effect to the gap that exists between last installation lid and the installation bulge loop, as the utility model relates to a magnetic fluid sealing device is preferred for the (mixing) shaft, first recess has all been seted up to the lower terminal surface of last installation lid and the up end of installation bulge loop, and the inside of two first recesses is all filled has first sealing washer.
In order to improve the inseparable degree that sealed locating part inserted in the slot, avoid having the problem in gap between the two, conduct the utility model relates to a magnetic fluid sealing device is preferred for the (mixing) shaft, and the inside wall fixedly connected with rubber packing pad of slot.
In order to improve the leakproofness of joint gap department between installation lid and the seal housing lower extreme down, as the utility model relates to a magnetic fluid sealing device is preferred for the (mixing) shaft, and the second recess has all been seted up to seal housing's lower terminal surface and the up end of installation lid down, and the inside of two second recesses all is filled there is the second sealing washer.
In order to make things convenient for installation and dismantlement between installation lid and the installation bulge loop, as the utility model relates to a magnetic fluid sealing device is preferred for the (mixing) shaft, and the up end of going up the installation lid can be dismantled and be connected with a plurality of bolts, goes up to install to dismantle through a plurality of bolts between lid and the installation bulge loop and be connected.
Compared with the prior art, the beneficial effects of the utility model are that:
this kind of magnetic fluid sealing device for (mixing) shaft, after the (mixing) shaft installation, need be at seal housing upper end installation closing cap, and then install the installation lid in installation bulge loop upper end, there is the gap between the two after the installation, and then steam and water are easy to get into in the seal housing through the gap, and then connect sealed locating part at the inside wall of installation bulge loop, put into annular tetrafluoro sealing washer between sealed locating part and installation bulge loop after that, will go up the installation lid and place installation bulge loop upper end after that. When placing, the slot is inserted on sealed locating part, the chucking between the two to annular tetrafluoro sealing washer seals the gap between installation bulge loop and the last installation lid, prevents that steam and water from getting into in the sealed casing through the gap. The magnetic fluid sealing body adopts a magnetic fluid sealing mechanism known in the industry, so that the effect of conveniently sealing a gap formed between the mounting convex ring at the upper end of the sealing shell and the upper mounting cover is achieved, steam and water are prevented from entering the sealing shell through the gap, and the sealing performance of the magnetic fluid sealing device is further improved.
According to the magnetic fluid sealing device for the stirring shaft, after the upper mounting cover is mounted at the upper end of the mounting convex ring, the two first sealing rings are tightly attached to further seal a gap between the upper mounting cover and the mounting convex ring.
This kind of magnetic fluid sealing device for (mixing) shaft, when sealed locating part upper end inserts the slot in, improved the inseparable degree that sealed locating part inserted in the slot through rubber seal pad, avoid the problem that has the gap between the two.
To sum up, this kind of magnetic fluid sealing device for (mixing) shaft has the convenience and seals the gap that forms of installation between installation bulge loop and the upper mounting cover of seal housing upper end, prevents that steam and water from getting into in the seal housing through the gap, has further improved this magnetic fluid sealing device's sealing performance's characteristics.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a sectional view of a magnetic fluid sealing device for a stirring shaft according to the present invention;
fig. 2 is a cross-sectional view taken along the line a of the present invention;
fig. 3 is a cross-sectional view at B of the present invention;
fig. 4 is a structure diagram of the seal position-limiting member of the present invention.
In the figure, 1, a sealed housing; 101. an upper mounting cover; 102. installing a convex ring; 103. a bolt; 104. a lower mounting cover; 2. a magnetic transmission shaft; 201. a stirring shaft; 202. a bearing; 203. a magnetic fluid seal body; 3. sealing the limiting part; 301. a slot; 302. a rubber gasket; 4. an annular PTFE seal ring; 5. a first groove; 501. a first seal ring; 6. a second groove; 601. and a second seal ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a magnetic fluid sealing device for (mixing) shaft, including seal housing 1, seal housing 1's up end outside fixedly connected with installation bulge loop 102, installation lid 101 is installed to the up end of installation bulge loop 102, seal housing 1's lower terminal surface embedding is provided with down installation lid 104, the lower terminal surface through connection of lower installation lid 104 has magnetic conduction transmission shaft 2, (mixing) shaft 201 is installed to the up end of magnetic conduction transmission shaft 2, the upper end of (mixing) shaft 201 runs through last installation lid 101 and extends to the top of installation lid 101. Two bearings 202 and a magnetic fluid sealing body 203 are installed on the outer side wall of the magnetic conduction transmission shaft 2, and the magnetic fluid sealing body 203 is located between the two bearings 202 and is tightly attached to the lower end face of the bearing 202 located at the upper end. The lower end surface of the upper mounting cover 101 is provided with a slot 301, the inner side wall of the mounting convex ring 102 is fixedly connected with a sealing limiting part 3, and the upper end of the sealing limiting part 3 extends to the inside of the slot 301. A cavity is formed between the outer side wall of the seal limiting part 3 and the inner side wall of the mounting convex ring 102, and the annular tetrafluoro seal ring 4 is filled in the cavity.
In this embodiment: after the stirring shaft 201 is installed, a sealing cover needs to be installed at the upper end of the sealing shell 1, the installation cover 101 is installed at the upper end of the installation convex ring 102, a gap exists between the sealing cover and the installation convex ring, steam and water easily enter the sealing shell 1 through the gap, the sealing limiting part 3 is connected to the inner side wall of the installation convex ring 102, then the annular tetrafluoro sealing ring 4 is placed between the sealing limiting part 3 and the installation convex ring 102, and then the upper end of the installation convex ring 102 is placed on the upper installation cover 101. When placing, slot 301 inserts on sealed locating part 3, the chucking between the two to annular tetrafluoro sealing washer 4 seals the gap between installation bulge loop 102 and the last installation lid 101, prevents that steam and water from passing through the gap and getting into in the sealed casing 1. The magnetic fluid sealing body 203 adopts a magnetic fluid sealing mechanism known in the industry, so that the effect of conveniently sealing a gap formed between the installation convex ring 102 at the upper end of the sealing shell 1 and the upper installation cover 101 is achieved, steam and water are prevented from entering the sealing shell 1 through the gap, and the sealing performance of the magnetic fluid sealing device is further improved.
As a technical optimization scheme of the utility model, first recess 5 has all been seted up to the lower terminal surface of upper mounting cover 101 and the up end of installation bulge loop 102, and first sealing washer 501 has all been filled to the inside of two first recesses 5.
In this embodiment: after the upper mounting cover 101 is mounted on the upper end of the mounting convex ring 102, the two first sealing rings 501 are tightly attached to further seal the gap between the upper mounting cover 101 and the mounting convex ring 102.
As a technical optimization scheme of the utility model, the inside wall fixedly connected with rubber packing pad 302 of slot 301.
In this embodiment: when the upper end of the sealing and limiting member 3 is inserted into the slot 301, the tightness of the sealing and limiting member 3 inserted into the slot 301 is improved by the rubber gasket 302, and the problem of a gap between the two is avoided.
As a technical optimization scheme of the utility model, second recess 6 has all been seted up to the lower terminal surface of seal housing 1 and the up end of lower installation lid 104, and the inside of two second recesses 6 all is filled there is second sealing washer 601.
In this embodiment: after the lower mounting cap 104 is mounted on the lower end of the sealing housing 1, the two second sealing rings 601 improve the sealing performance of the connection gap between the lower mounting cap 104 and the lower end of the sealing housing 1.
As a technical optimization scheme of the utility model, the up end of upper mounting cover 101 can be dismantled and is connected with a plurality of bolts 103, can dismantle through a plurality of bolts 103 between upper mounting cover 101 and the installation bulge loop 102 and be connected.
In this embodiment: when the stirring shaft 201 is installed, the plurality of bolts 103 are screwed, then the upper installation cover 101 is detached from the installation convex ring 102, and then the stirring shaft 201 is installed, thereby achieving the effect of facilitating the installation and detachment between the upper installation cover 101 and the installation convex ring 102.
The utility model discloses a theory of operation and use flow: after the stirring shaft 201 is installed, a sealing cover needs to be installed at the upper end of the sealing shell 1, the installation cover 101 is installed at the upper end of the installation convex ring 102, a gap exists between the sealing cover and the installation convex ring, steam and water easily enter the sealing shell 1 through the gap, the sealing limiting part 3 is connected to the inner side wall of the installation convex ring 102, then the annular tetrafluoro sealing ring 4 is placed between the sealing limiting part 3 and the installation convex ring 102, and then the upper end of the installation convex ring 102 is placed on the upper installation cover 101. When placing, slot 301 inserts on sealed locating part 3, the chucking between the two to annular tetrafluoro sealing washer 4 seals the gap between installation bulge loop 102 and the last installation lid 101, prevents that steam and water from passing through the gap and getting into in the sealed casing 1. The magnetic fluid sealing body 203 adopts a magnetic fluid sealing mechanism known in the industry, the two first sealing rings 501 are tightly attached to further seal the gap between the upper mounting cover 101 and the mounting convex ring 102, and after the lower mounting cover 104 is mounted at the lower end of the sealing shell 1, the two second sealing rings 601 improve the sealing performance of the connecting gap between the lower mounting cover 104 and the lower end of the sealing shell 1.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides a magnetic fluid sealing device for (mixing) shaft, includes sealed casing (1), its characterized in that: an installation convex ring (102) is fixedly connected to the outer side of the upper end face of the sealing shell (1), an upper installation cover (101) is installed on the upper end face of the installation convex ring (102), a lower installation cover (104) is embedded into the lower end face of the sealing shell (1), a magnetic conduction transmission shaft (2) is connected to the lower end face of the lower installation cover (104) in a penetrating mode, a stirring shaft (201) is installed on the upper end face of the magnetic conduction transmission shaft (2), the upper end of the stirring shaft (201) penetrates through the upper installation cover (101) and extends to the upper portion of the upper installation cover (101), two bearings (202) and a magnetic fluid sealing body (203) are installed on the outer side wall of the magnetic conduction transmission shaft (2), the magnetic fluid sealing body (203) is located between the two bearings (202) and is tightly attached to the lower end face of the bearing (202), a slot (301) is formed in the lower, the mounting structure is characterized in that a sealing limiting part (3) is fixedly connected to the inner side wall of the mounting convex ring (102), the upper end of the sealing limiting part (3) extends to the inside of the slot (301), a cavity is formed between the outer side wall of the sealing limiting part (3) and the inner side wall of the mounting convex ring (102), and an annular tetrafluoro sealing ring (4) is filled in the cavity.
2. The magnetic fluid sealing device for the stirring shaft according to claim 1, wherein: first grooves (5) are formed in the lower end face of the upper mounting cover (101) and the upper end face of the mounting convex ring (102), and first sealing rings (501) are filled in the first grooves (5).
3. The magnetic fluid sealing device for the stirring shaft according to claim 1, wherein: the inner side wall of the slot (301) is fixedly connected with a rubber sealing gasket (302).
4. The magnetic fluid sealing device for the stirring shaft according to claim 1, wherein: second grooves (6) are formed in the lower end face of the sealing shell (1) and the upper end face of the lower mounting cover (104), and second sealing rings (601) are filled in the second grooves (6).
5. The magnetic fluid sealing device for the stirring shaft according to claim 1, wherein: the upper end face of the upper mounting cover (101) is detachably connected with a plurality of bolts (103), and the upper mounting cover (101) is detachably connected with the mounting convex ring (102) through the plurality of bolts (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022443261.4U CN213298827U (en) | 2020-10-28 | 2020-10-28 | Magnetic fluid sealing device for stirring shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022443261.4U CN213298827U (en) | 2020-10-28 | 2020-10-28 | Magnetic fluid sealing device for stirring shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213298827U true CN213298827U (en) | 2021-05-28 |
Family
ID=76015597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022443261.4U Active CN213298827U (en) | 2020-10-28 | 2020-10-28 | Magnetic fluid sealing device for stirring shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213298827U (en) |
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2020
- 2020-10-28 CN CN202022443261.4U patent/CN213298827U/en active Active
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