CN216692242U - Ultrapure diaphragm sealing structure - Google Patents
Ultrapure diaphragm sealing structure Download PDFInfo
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- CN216692242U CN216692242U CN202122403504.6U CN202122403504U CN216692242U CN 216692242 U CN216692242 U CN 216692242U CN 202122403504 U CN202122403504 U CN 202122403504U CN 216692242 U CN216692242 U CN 216692242U
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Abstract
The utility model provides an ultrapure diaphragm sealing structure which comprises a valve body used for being connected with a pipeline, wherein a driving shell with a barrel-shaped structure is fixedly arranged on the top surface of the valve body, a diaphragm with a disc structure is clamped between the driving shell and a connecting base, the top surface of the diaphragm is fixedly connected with a connecting end of a driving rod, and the upper wall of the driving shell (1) is sleeved with a suspended end of the driving rod (2); the connecting seat is internally communicated with a water inlet pipeline and a water outlet pipeline, the outlet end of the water inlet pipeline is in sealing contact with the bottom surface of the diaphragm sheet to form a first sealing surface, and the cross section of the first sealing surface is of a sawtooth structure. The utility model can improve the sealing effect of the diaphragm so as to ensure the performance of the diaphragm valve.
Description
Technical Field
The utility model relates to the technical field of ultrapure diaphragm sealing, in particular to an ultrapure diaphragm sealing structure.
Background
The diaphragm valve used in the field of ultra-pure is often used for conveying strong corrosive and toxic chemical liquid medicines and high-purity water media, and has high requirements on the sealing performance of the valve, but the sealing structure of the valve core of the diaphragm valve in the market at present adopts line sealing and surface sealing, and the sealing performance cannot meet the requirements. In the field, the valve body is made of corrosion-resistant materials, such as PFA materials, and the materials are high in compressibility and easy to produce interference fit.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a sealing structure for an ultrapure diaphragm, which can enhance the sealing effect of the diaphragm to improve the performance of the diaphragm valve.
In order to solve the technical problems, the utility model adopts the technical scheme that:
an ultrapure diaphragm sealing structure comprises a valve body used for being connected with a pipeline, wherein a driving shell of a barrel-shaped structure is fixedly mounted on the top surface of the valve body, a diaphragm of a disc structure is clamped between the driving shell and a connecting base, the top surface of the diaphragm is fixedly connected with a connecting end of a driving rod, and the upper wall of the driving shell is sleeved with a free end of the driving rod;
the diaphragm is characterized in that a water inlet pipeline and a water outlet pipeline are communicated and arranged in the valve body, the outlet end of the water inlet pipeline is in sealing contact with the bottom surface of the diaphragm, a first sealing surface is formed, and the cross section of the first sealing surface is of a sawtooth structure.
Furthermore, a plurality of first sealing grooves are formed in the first surface of the bottom surface of the diaphragm, a plurality of first sealing bosses are oppositely formed in the second surface of the outlet end, and the first sealing grooves are in interference clamping connection with the first sealing bosses.
Furthermore, a plurality of second sealing bosses and second sealing grooves are respectively arranged on the first surface and the second surface, and the structures and the matching modes of the second sealing bosses and the second sealing grooves are the same as those of the first sealing bosses and the first sealing grooves.
Furthermore, the bottom surface of the diaphragm is provided with positioning baffle tables at intervals for avoiding the diaphragm from generating displacement, and the positioning baffle tables are arranged in contact with the inner wall of the outlet end.
Further, the positioning baffle tables are radially and circumferentially arranged.
Furthermore, the depth of the first sealing grooves is the same, and the first sealing grooves are arranged in parallel and opposite to each other.
Furthermore, a third sealing boss is additionally arranged at the edge position of the bottom surface of the diaphragm, and the third sealing boss is in interference fit with the top surface of the valve body.
Furthermore, the top surface of the diaphragm is fixedly provided with a threaded connecting rod, and the threaded connecting rod is in threaded connection with the bottom end of the driving rod.
The utility model has the advantages and positive effects that:
the first sealing boss at the outlet end is clamped and sealed with the first sealing groove on the diaphragm, the section of the first sealing surface is of a sawtooth structure, the area of the first sealing surface is increased, and meanwhile, liquid in the water inlet pipeline can overflow after passing through a plurality of bent paths, so that the sealing effect of the diaphragm can be enhanced; and the first sealing groove and the first sealing boss are in interference fit, so that the first sealing surface is provided with a plurality of interference fit surfaces with circular ring structures, the sealing performance of the diaphragm is further improved, and the partition performance of the diaphragm valve is effectively improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
figure 1 is an overall block diagram of an ultra pure membrane seal arrangement of the present invention;
figure 2 is a diagram of an ultrapure diaphragm seal structure of the present invention;
in the figure: 1. a drive case; 2. a drive rod; 3. a diaphragm sheet; 301. a threaded connecting rod; 302. a first seal groove; 303. a third seal boss; 304. positioning a blocking platform; 4. a valve body; 401. a water inlet pipeline; 4011. an outlet end; 4012. a first seal boss; 402. a water outlet pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 2, the present invention provides a ultrapure diaphragm sealing structure, which comprises a valve body 4 for connecting with a pipeline, wherein a water inlet pipeline 401 and a water outlet pipeline 402 which are communicated with each other are arranged in the valve body 4, as shown in the position of fig. 1, an outlet end 4011 of the water inlet pipeline 401 is vertically arranged, a diaphragm 3 with a disk structure is tightly attached to the top surface of the outlet end 4011, and the top surface of the valve body 4 is sealed by the central area of the diaphragm 3, so as to prevent the water inlet pipeline 401 and the water outlet pipeline 402 from being communicated.
The central area of the diaphragm 3 blocks the outlet port 4011, the water inlet pipeline 401 and the water outlet pipeline 402 are not communicated, and the diaphragm valve is in a blocking state; after the central area of the diaphragm 3 is moved upwards, the central area of the diaphragm 3 is moved away from the top surface of the outlet port 4011, and the inlet conduit 401 and the outlet conduit 402 are connected, and the diaphragm valve is in a connected state.
The top surface of the valve body 4 is fixedly provided with a driving shell 1 with a barrel-shaped structure, the driving shell 1 is fixedly arranged on the top surface of the valve body 4 in a sealing way, and the diaphragm 3 on the top surface of the valve body 4 is clamped and fixed, so that the diaphragm 3 is fixed between the driving shell 1 and the valve body 4 in a sealing way. In order to ensure the sealing performance of the diaphragm 3, a third sealing boss 303 is additionally arranged at the edge position of the bottom surface of the diaphragm 3, and the third sealing boss 303 is in interference fit with the top surface of the valve body 4.
Preferably, the third sealing boss 303 is a circular ring boss structure. When installing diaphragm 3, earlier with 3 interference fit of diaphragm at 4 top surfaces of valve body, later compress tightly installation drive shell 1 at the top surface of diaphragm 3, drive shell 1 compresses tightly 3 edges of diaphragm, guarantees diaphragm 3 and 4 interference fit's of valve body steadiness. Because the third sealing boss 303 conforms to the top surface of the valve body 4 in an interference manner, two interference fit surfaces with circular ring structures are arranged on the second sealing surface, so that the sealing performance of the edge position of the diaphragm 3 is improved; third seal boss 303 makes the second seal face between diaphragm 3 and valve body 4 be the sawtooth structure, has increased the area of second seal face, has further improved the sealing performance at diaphragm 3 edge.
The top surface of the diaphragm 3 is fixedly connected with the connecting end of the driving rod 2, the upper wall of the driving shell (1) is sleeved with the suspension end of the driving rod (2), the driving rod 2 is in transmission connection with a driving mechanism, and the driving mechanism is used for enabling the driving rod 2 to axially reciprocate. The central area of the top surface of the diaphragm 3 is fixedly provided with a threaded connecting rod 301, and the threaded connecting rod 301 is in threaded connection with the bottom end of the driving rod 2. When the driving rod 2 reciprocates axially, the central area of the diaphragm 3 is driven to reciprocate together, so that the diaphragm 3 blocks the outlet end 4011 or moves away from the outlet end 4011.
The outlet end 4011 is in sealing contact with the bottom surface of the diaphragm 3, the contact surface of the diaphragm 3 and the outlet end 4011 is a first sealing surface of a circular ring structure, and the cross section of the first sealing surface is a sawtooth structure to ensure the sealing performance of the outlet end 4011 and the diaphragm 3. Preferably, set up the contact surface of its bottom surface of diaphragm 3 into first face, seted up a plurality of first sealed recesses 302 of concentric on first face, it is corresponding, set up its contact surface of exit end 4011 into the second face, be equipped with a plurality of first sealed bosss 4012 of concentric relatively on the second face.
The first seal grooves 302 are disposed opposite to the first seal bosses 4012, and preferably, all the first seal grooves 302 have the same depth and are disposed in parallel opposite to each other. When diaphragm 3 is sealed, first sealed recess 302 and first sealed boss 4012 interference joint make first sealed face form the sawtooth structure, increase diaphragm 3 and the area of exit end 4011 contact surface, have improved diaphragm 3's leakproofness.
And first sealed recess 302 is interference joint with first sealed boss 4012 for there are a plurality of interference ring seal faces of crossing the centre of a circle on the first sealed face, and liquid in the inlet channel 401 must just can reveal after the sealed face of a plurality of interference rings in proper order, has further improved diaphragm 3's sealing performance.
Similarly, a plurality of concentric second sealing bosses and second sealing grooves can be respectively arranged on the first surface and the second surface, the second sealing bosses and the second sealing grooves have the same structure as the first sealing bosses 4012 and the first sealing grooves 302 and form the first sealing surface, and the cross section of the first sealing surface is also in a sawtooth structure.
3 bottom surfaces of diaphragm are provided with the location and keep off platform 304, the location keeps off platform 304 and exit end 4011 inner wall contact setting, as shown in fig. 2, when diaphragm 3 rebound, diaphragm 3 upwards is automatic along the lateral wall of location fender platform, can avoid diaphragm 3 to produce the slope when reciprocating, guarantee in the first sealed recess 302 of joint that first sealed boss 4012 can be accurate, the location keeps off the distance setting that platform 304 highly is not less than 2 axial displacement of actuating lever, guarantee the bus region of diaphragm 3 and reciprocate the in-process, actuating lever 2 contacts with exit end 4011 inner wall all the time.
Preferably, the positioning baffle 304 is arranged along the radial direction of the diaphragm 3, and is arranged on the bottom surface of the diaphragm 3 at intervals and in a circumferential manner, so that the liquid in the water inlet pipeline 401 is not influenced to flow out while the diaphragm 3 is prevented from inclining in the axial movement process.
The working principle and the working process of the utility model are as follows:
the driving rod 2 moves downwards, the driving rod 2 drives the central area of the diaphragm sheet 3 to move downwards, so that the suspended end of the driving rod 2 is flush with the top surface of the driving shell 1 or slightly lower than the top surface, the first sealing groove 302 is clamped into the first sealing boss 4012 in an interference manner, the water inlet pipeline 401 and the water outlet pipeline 402 are conducted and not conducted, and the diaphragm valve is in a disconnected state. The first sealing groove 302 and the first sealing boss 4012 are in interference clamping connection to form a plurality of annular interference matching surfaces, and the first sealing boss 4012 is arranged concentrically. The liquid in the water inlet pipeline 401 must sequentially pass through all the interference fit surfaces, and the sealing performance of the diaphragm 3 is effectively improved.
When the driving rod 2 moves upwards, the driving rod 2 drives the central area of the diaphragm 3 to move upwards, the suspended end of the driving rod 2 extends out of the top surface of the driving shell 1, the first sealing boss 4012 is moved out of the first sealing groove 302, the water inlet pipeline 401 is communicated with the water outlet pipeline 402, and the diaphragm valve is in a conducting state. The central region of diaphragm 3 avoids diaphragm 3 central region to produce the slope along the rebound of the lateral wall of location fender platform 304, guarantees that first sealed boss 4012 and first sealed recess 302 are in parallel relative position all the time, and when actuating lever 2 moved down once more, first sealed boss 4012 can be accurate the card go into in the first sealed recess 302.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (8)
1. The ultra-pure diaphragm sealing structure is characterized by comprising a valve body (4) connected with a pipeline, wherein a driving shell (1) with a barrel-shaped structure is fixedly mounted on the top surface of the valve body (4), a diaphragm (3) with a disc structure is clamped and mounted between the driving shell (1) and a connecting base, the top surface of the diaphragm (3) is fixedly connected with a connecting end of a driving rod (2), and the upper wall of the driving shell (1) is sleeved with a free end of the driving rod (2);
the valve body (4) is internally communicated with a water inlet pipeline (401) and a water outlet pipeline (402), the outlet end (4011) of the water inlet pipeline (401) is in sealing contact with the bottom surface of the diaphragm (3) to form a first sealing surface, and the cross section of the first sealing surface is of a sawtooth structure.
2. The ultra-pure diaphragm sealing structure according to claim 1, wherein a plurality of first sealing grooves (302) are formed in a first surface of the bottom surface of the diaphragm (3), a plurality of first sealing bosses (4012) are oppositely formed in a second surface of the outlet end (4011), and the first sealing grooves (302) are in interference clamping connection with the first sealing bosses (4012).
3. The ultra-pure diaphragm sealing structure according to claim 2, wherein the first surface and the second surface are respectively provided with a plurality of second sealing bosses and second sealing grooves, and the structures and the matching manners of the second sealing bosses and the second sealing grooves are the same as those of the first sealing bosses (4012) and the first sealing grooves (302).
4. The ultra-pure diaphragm sealing structure according to claim 1, wherein the diaphragm (3) is provided with a positioning baffle table (304) at a bottom surface interval for avoiding the displacement of the diaphragm (3), and the positioning baffle table (304) is arranged in contact with the inner wall of the outlet end (4011).
5. The ultrapure diaphragm seal structure according to claim 4, wherein the positioning stops (304) are radially circumferentially arranged.
6. The ultra-pure diaphragm seal structure according to claim 2, wherein a plurality of the first seal grooves (302) have the same depth and are oppositely arranged in parallel.
7. The ultra-pure diaphragm sealing structure according to claim 1, wherein a third sealing boss (303) is added at the edge position of the bottom surface of the diaphragm (3), and the third sealing boss (303) is in interference fit with the top surface of the valve body (4).
8. The ultra-pure diaphragm sealing structure according to claim 1, wherein a threaded connecting rod (301) is fixedly mounted on the top surface of the diaphragm (3), and the threaded connecting rod (301) is in threaded connection with the bottom end of the driving rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122403504.6U CN216692242U (en) | 2021-09-29 | 2021-09-29 | Ultrapure diaphragm sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122403504.6U CN216692242U (en) | 2021-09-29 | 2021-09-29 | Ultrapure diaphragm sealing structure |
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| Publication Number | Publication Date |
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| CN216692242U true CN216692242U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122403504.6U Active CN216692242U (en) | 2021-09-29 | 2021-09-29 | Ultrapure diaphragm sealing structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325206A (en) * | 2022-10-17 | 2022-11-11 | 谷微半导体科技(江苏)有限公司 | Corrosion-resistant diaphragm valve and application method thereof |
-
2021
- 2021-09-29 CN CN202122403504.6U patent/CN216692242U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325206A (en) * | 2022-10-17 | 2022-11-11 | 谷微半导体科技(江苏)有限公司 | Corrosion-resistant diaphragm valve and application method thereof |
| CN115325206B (en) * | 2022-10-17 | 2023-08-25 | 谷微半导体科技(江苏)有限公司 | Corrosion-resistant diaphragm valve and use method thereof |
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