CN220060615U - Sealing metal sleeve for diaphragm valve - Google Patents
Sealing metal sleeve for diaphragm valve Download PDFInfo
- Publication number
- CN220060615U CN220060615U CN202320641531.3U CN202320641531U CN220060615U CN 220060615 U CN220060615 U CN 220060615U CN 202320641531 U CN202320641531 U CN 202320641531U CN 220060615 U CN220060615 U CN 220060615U
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- Prior art keywords
- sealing
- valve body
- diaphragm
- fixedly connected
- body pipe
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- 238000007789 sealing Methods 0.000 title claims abstract description 118
- 239000002184 metal Substances 0.000 title claims abstract description 18
- 238000001125 extrusion Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of sealing metal sleeves, and discloses a sealing metal sleeve for a diaphragm valve, which comprises a valve body pipe, wherein a sealing mechanism is arranged above the valve body pipe, a hand wheel is rotated to drive a threaded rod to rotate, relative limiting is performed through the connection relation between a threaded block and a sealing box, the threaded block drives two sealing pistons to move through a supporting rod, extrusion air pushes out a diaphragm to contact and attach with a baffle plate so as to facilitate sealing, the influence caused by contact abrasion can be effectively reduced through pushing out the diaphragm in a non-contact mode, the service life can be effectively prolonged, and the semicircular sealing block is subjected to relative limiting through the connection relation between the semicircular sealing block and the sealing box while the threaded rod rotates, so that the semicircular sealing block props against the bottom of the inner wall of the valve body pipe to perform secondary sealing, and the diaphragm is prevented from being damaged and leaking.
Description
Technical Field
The utility model relates to the technical field of sealing metal sleeves, in particular to a sealing metal sleeve for a diaphragm valve.
Background
A diaphragm valve is a valve that opens and closes by deformation of a flexible diaphragm (e.g., a rubber diaphragm). The diaphragm valve can be controlled by a cylinder or the like, but this requires the provision of an additional cylinder or the like; alternatively, the diaphragm valve may be pneumatically controlled, but in this case a spring, tie rod or the like is required to effect the resetting of the diaphragm valve.
The prior art is as disclosed in the publication No.: CN203189782U proposes a technical solution: the valve comprises a valve body, a valve cover, a hand wheel, a valve rod and a valve core, wherein a diaphragm separating the valve body from the valve core is arranged between the valve body and the valve cover, an annular convex shoulder is arranged on the valve body adjacent to the wall surface of a movable channel of the valve core, an annular convex rib is arranged on the lower side of the diaphragm in a fitting manner corresponding to the outer ring of the annular convex shoulder, and the annular convex rib is in sealing fit with the annular convex shoulder.
However:
the valve body of the diaphragm valve in the prior art comprises an inlet channel and an outlet channel, a raised baffle plate is arranged between the inlet channel and the outlet channel and used for blocking the inlet channel and the outlet channel, a valve core is connected with the center of the diaphragm, when the valve core descends, the diaphragm is pressed to enable the diaphragm to be abutted against the baffle plate, so that the inlet channel and the outlet channel are blocked, but because the valve core mainly generates pressure to the center of the diaphragm, the pressure born around the diaphragm is gradually and outwards decreased, the baffle plate has a certain span, when the diaphragm is abutted against the baffle plate by the valve core, the pressure born at two ends of the baffle plate is relatively smaller, when the fluid pressure is larger, the two ends of the baffle plate are easy to generate leakage phenomenon, the diaphragm is in frequent contact with the valve core, the contact position is worn after the service time is long, and the service life of the diaphragm is easy to be influenced.
Disclosure of Invention
(one) solving the technical problems
In order to overcome the defects in the prior art, the utility model provides a sealing metal sleeve for a diaphragm valve. The sealing mechanism has the advantages that the sealing mechanism is arranged, the sealing performance is improved by using the two groups of diaphragms for sealing, the diaphragms are ejected out by extruding air, the influence caused by contact abrasion can be effectively reduced, and the service life can be effectively prolonged.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a be used for diaphragm valve seal metal cover, includes the valve body pipe, the top of valve body pipe is provided with sealing mechanism, the both ends of valve body pipe are fixedly connected with ring flange respectively, two sets of the one side that the valve body pipe was kept away from to the ring flange is fixedly connected with connecting pipe respectively, and connecting pipe and valve body pipe intercommunication.
Preferably, the sealing mechanism comprises a sealing box, sealing box fixed connection is at the top of valve body pipe and with the inside intercommunication of valve body pipe, the position of valve body pipe inner wall bottom both sides is fixedly connected with baffle plate respectively, the both sides of the position that sealing box inner wall bottom is close the centre are fixedly connected with splitter plate respectively, two respectively fixedly connected with diaphragm between splitter plate and the inner wall of sealing box, two respectively sliding connection has sealing piston in the position that is in the diaphragm top between splitter plate and the inner wall of sealing box, through the inner wall of sealing box and two sets of sealing pistons and two splitter plates plus diaphragm in sealing box inside formation two sealed spaces, the top of sealing box is provided with the threaded rod, the threaded rod runs through the top of sealing box and extends to inside, and runs through the department and pass through the bearing and rotate and be connected, the position threaded connection on the outer wall of threaded rod is in sealing piston has the screw thread piece, and the inner wall sliding connection of screw rod bottom is fixedly connected with the bracing piece respectively, and two bracing pieces respectively with the top fixed connection of two sealing pistons, drives sealing piston and seals the diaphragm with extrusion seal air through rotating to make things convenient for the diaphragm contact with the extrusion.
Preferably, the top fixedly connected with hand wheel of threaded rod, atress when conveniently rotating the threaded rod.
Preferably, one end of the bottom of the threaded rod is in threaded connection with a semicircular sealing block, and the semicircular sealing block is in sliding connection with the inner wall of the sealing box, so that the semicircular sealing block moves up and down in a straight line.
Preferably, the two groups of sealing pistons are attached to the two groups of separating plates and the inner wall of the sealing box, and the contact surface is fixedly connected with a sealing ring, so that air leakage can be avoided.
Preferably, the cambered surface of the semicircular sealing block is matched with the bottom of the inner wall of the valve body pipe, and the bottom of the inner wall of the valve body pipe can be propped against through the semicircular sealing block to seal.
(III) beneficial effects
Compared with the prior art, the utility model provides the sealing metal sleeve for the diaphragm valve, which has the following beneficial effects:
1. this a be used for diaphragm valve seal metal cover through setting up sealing mechanism, drives the threaded rod through rotating the hand wheel, rotates, carries out relative spacing through the relation of connection of thread piece and seal box for the thread piece passes through the bracing piece and drives two sealed pistons and remove, and extrusion air is ejecting with baffle contact laminating with the convenience sealed, can effectively reduce the influence that contact wear brought with the diaphragm ejecting through non-contact mode, can effectively increase of service life.
2. This a be used for diaphragm valve seal metal cover, when rotatory through the threaded rod, carry out relative spacing through the relation of connection of semicircle sealing piece and seal box for semicircle sealing piece supports the bottom of valve body pipe inner wall and carries out secondary seal, in order to avoid the diaphragm damage to take place to leak.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a front view of the present utility model;
FIG. 2 is a front cross-sectional view of the present utility model;
FIG. 3 is a schematic structural view of a semicircular sealing block according to the present utility model.
In the figure: 1. a valve body tube; 2. a sealing mechanism; 201. a seal box; 202. a baffle plate; 203. a separation plate; 204. a diaphragm; 205. a sealing piston; 206. a threaded rod; 207. a screw block; 208. a support rod; 209. a semicircular sealing block; 210. a hand wheel; 3. a flange plate; 4. and (5) connecting pipes.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Example 1
As shown in fig. 1-3, the utility model provides a sealing metal sleeve for a diaphragm valve, which comprises a valve body tube 1, a sealing mechanism 2 is arranged above the valve body tube 1, flange plates 3 are respectively and fixedly connected at two ends of the valve body tube 1, a connecting tube 4 is respectively and fixedly connected at one side of the two groups of flange plates 3 far away from the valve body tube 1, the connecting tube 4 is communicated with the valve body tube 1, the sealing mechanism 2 comprises a sealing box 201, the sealing box 201 is fixedly connected at the top of the valve body tube 1 and is communicated with the interior of the valve body tube 1, baffle plates 202 are respectively and fixedly connected at two sides of the bottom of the inner wall of the valve body tube 1, separating plates 203 are respectively and fixedly connected at two sides of the bottom of the inner wall of the sealing box 201, a diaphragm 204 is respectively and fixedly connected between the two separating plates 203 and the inner wall of the sealing box 201, a sealing piston 205 is respectively and slidingly connected at the position above the diaphragm 204 between the two separating plates 203 and the inner wall of the sealing box 201, two sealed spaces are formed inside the sealing box 201 through the inner wall of the sealing box 201, two groups of sealing pistons 205 and two separating plates 203 and a diaphragm 204, a threaded rod 206 is arranged at the top of the sealing box 201, the threaded rod 206 penetrates through the top of the sealing box 201 and extends to the inside, the penetrating parts are connected in a rotating way through bearings, a threaded block 207 is connected at the position, above the sealing pistons 205, of the outer wall of the threaded rod 206 in a threaded way, the threaded block 207 is connected with the inner wall of the sealing box 201 in a sliding way, two sides of the bottom of the threaded block 207 are respectively fixedly connected with supporting rods 208, the two supporting rods 208 are respectively fixedly connected with the tops of the two sealing pistons 205, the sealing pistons 205 are driven by rotating the threaded rod 206 to extrude air to push the diaphragm 204 out to contact and fit with the baffle 202 so as to facilitate sealing, a hand wheel 210 is fixedly connected to the top of the threaded rod 206, the threaded rod 206 is conveniently rotated to bear force, the two groups of sealing pistons 205 are attached to the two groups of separating plates 203 and the inner wall of the sealing box 201, and the contact surface is fixedly connected with a sealing ring, so that air leakage can be avoided.
In this embodiment, through setting up sealing mechanism 2, through rotating hand wheel 210, drive threaded rod 206 rotation, it is spacing relatively to carry out through the relation of connection of screw thread piece 207 and seal box 201 for screw thread piece 207 drives two sealing pistons 205 through bracing piece 208 and removes, and extrusion air is ejecting with baffle 202 contact laminating with the convenience to seal diaphragm 204, can effectively reduce the influence that contact wear brought with diaphragm 204 through noncontact mode ejecting, can effectively increase of service life.
Example 2
As shown in fig. 1-3, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, one end of the bottom of the threaded rod 206 is in threaded connection with a semicircular sealing block 209, and the semicircular sealing block 209 is in sliding connection with the inner wall of the sealing box 201, so that the semicircular sealing block 209 moves linearly up and down, the cambered surface of the semicircular sealing block 209 is matched with the bottom of the inner wall of the valve body pipe 1, and the bottom of the inner wall of the valve body pipe 1 can be propped against through the semicircular sealing block 209 to seal.
In this embodiment, the threaded rod 206 rotates and the semicircular sealing block 209 and the sealing box 201 are in a connection relationship to perform relative limitation, so that the semicircular sealing block 209 abuts against the bottom of the inner wall of the valve body tube 1 to perform secondary sealing, so as to avoid leakage caused by damage of the diaphragm 204.
The working principle of the sealing metal sleeve for the diaphragm valve is specifically described below.
As shown in fig. 1-3, when in use, the hand wheel 210 is rotated to drive the threaded rod 206 to rotate, the threaded block 207 and the sealing box 201 are in relative limit through the connection relation, so that the threaded block 207 drives the two sealing pistons 205 to move through the supporting rod 208, extrusion air pushes the diaphragm 204 out to be in contact with the baffle plate 202 for sealing, the influence caused by contact abrasion can be effectively reduced by pushing the diaphragm 204 out in a non-contact mode, the service life can be effectively prolonged, and when the threaded rod 206 rotates, the semicircular sealing block 209 and the sealing box 201 are in relative limit through the connection relation, so that the semicircular sealing block 209 is in secondary sealing against the bottom of the inner wall of the valve body tube 1, and the diaphragm 204 is prevented from being damaged and leaking.
Claims (5)
1. A metal sleeve for diaphragm valve sealing, comprising a valve body tube (1), characterized in that: the sealing mechanism (2) is arranged above the valve body pipe (1), the flange plates (3) are fixedly connected to the two ends of the valve body pipe (1) respectively, the two groups of flange plates (3) are fixedly connected with the connecting pipe (4) respectively on one side far away from the valve body pipe (1), the connecting pipe (4) is communicated with the valve body pipe (1), the sealing mechanism (2) comprises a sealing box (201), the sealing box (201) is fixedly connected to the top of the valve body pipe (1) and is communicated with the inside of the valve body pipe (1), the baffle plates (202) are fixedly connected to the two sides of the bottom of the inner wall of the valve body pipe (1) respectively, the separating plates (203) are fixedly connected to the two sides of the position, close to the middle, of the bottom of the inner wall of the sealing box (201) respectively, the diaphragms (204) are fixedly connected between the two separating plates (203) and the inner wall of the sealing box (201) respectively, the positions, which are above the diaphragms (204) are respectively, are respectively and slidably connected with the sealing pistons (205), the top of the sealing box (201) is provided with a threaded rod (206) which penetrates through the threaded rod (201) and extends through the threaded rod (201), the outer wall of threaded rod (206) is in position threaded connection on sealing piston (205) has screw thread piece (207), and screw thread piece (207) and the inner wall sliding connection of sealing box (201), the both sides of screw thread piece (207) bottom are fixedly connected with bracing piece (208) respectively, and two bracing pieces (208) are fixedly connected with the top of two sealing pistons (205) respectively.
2. A metal sleeve for diaphragm valve sealing according to claim 1, wherein: the top of threaded rod (206) is fixedly connected with hand wheel (210).
3. A metal sleeve for diaphragm valve sealing according to claim 1, wherein: one end of the bottom of the threaded rod (206) is in threaded connection with a semicircular sealing block (209), and the semicircular sealing block (209) is in sliding connection with the inner wall of the sealing box (201).
4. A metal sleeve for diaphragm valve sealing according to claim 1, wherein: the two groups of sealing pistons (205) are attached to the inner walls of the two groups of separating plates (203) and the sealing box (201), and the contact surface is fixedly connected with a sealing ring.
5. A metal sleeve for a diaphragm valve according to claim 3, wherein: the cambered surface of the semicircular sealing block (209) is matched with the bottom of the inner wall of the valve body pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320641531.3U CN220060615U (en) | 2023-03-28 | 2023-03-28 | Sealing metal sleeve for diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320641531.3U CN220060615U (en) | 2023-03-28 | 2023-03-28 | Sealing metal sleeve for diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220060615U true CN220060615U (en) | 2023-11-21 |
Family
ID=88751308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320641531.3U Active CN220060615U (en) | 2023-03-28 | 2023-03-28 | Sealing metal sleeve for diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220060615U (en) |
-
2023
- 2023-03-28 CN CN202320641531.3U patent/CN220060615U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A metal sleeve for sealing diaphragm valves Granted publication date: 20231121 Pledgee: Wuding Road Sub branch of Bank of Shanghai Co.,Ltd. Pledgor: Tiexi Fluid Technology (Shanghai) Co.,Ltd. Registration number: Y2024980004472 |