CN211779305U - Floating disc central ventilation valve - Google Patents
Floating disc central ventilation valve Download PDFInfo
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- CN211779305U CN211779305U CN202020299635.7U CN202020299635U CN211779305U CN 211779305 U CN211779305 U CN 211779305U CN 202020299635 U CN202020299635 U CN 202020299635U CN 211779305 U CN211779305 U CN 211779305U
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Abstract
The utility model discloses a floating disc central ventilation valve, which comprises a valve body, a valve cover, a valve ejector rod, a valve body sealing gasket, a foot margin and an electrical connection; the upper port of the valve body is provided with a circle of annular valve mounting seat which extends out of the valve port along the radial direction, the valve mounting seat is provided with the valve body sealing gasket, the valve body sealing gasket comprises an annular upper sealing plate and an annular lower sealing plate, the upper surface of the valve mounting seat is coaxially fixed with the upper sealing plate, the lower surface of the valve mounting seat is coaxially fixed with the lower sealing plate, and when the valve cover is closed, the valve body is closed by pressing the upper sealing plate; the lower part of the lower sealing plate is provided with a guide pipe; the pipe wall of the guide pipe is symmetrically provided with positioning rib plates and is fixedly connected with the bottom of the lower sealing plate, the lower end of the guide pipe extends downwards to the lower part of the valve body or the floating disc, and an aluminum alloy valve ejector rod is coaxially arranged in the guide pipe in a sliding fit manner; and a good sealing gasket is arranged between the upper sealing plate and the valve cover. The utility model discloses the leakproofness is good, the volume of volatilizing of oil is little, the static potential safety hazard is little.
Description
Technical Field
The utility model relates to a float top storage tank floating plate sealing technical field specifically is a floating plate central ventilation valve is related to.
Background
In order to improve the environment and reduce the discharge of VOCs, the state requires the use of efficient sealing forms such as floating roof tanks to transform the existing storage tank areas, and the floating roof storage tanks are mainly popularized. In a floating roof tank, a central tank vent valve is an important component to ensure the operation of the tank. The existing central vent valve for storage tanks is basically manufactured based on the standard production of SYT0511.3, and the vent valve has certain problems in the structure after years of operation. Mainly, the leakproofness of current central authorities' breather valve is extremely poor, leads to the oil to volatilize in a large number, when causing the destruction to the environment, has still produced a large amount of economic losses, and simultaneously, there is certain potential safety hazard in its structure itself. The existing central vent valve mainly comprises an inner floating roof automatic vent valve and an outer floating roof automatic vent valve for adapting to different occasions, the two types of structures are basically the same and are only adapted to different occasions, different manufacturers carry out certain adjustment on materials, the outer floating roof floating disc is basically a single disc type or double disc type steel floating disc, the vent valve is also designed into an integral steel structure, wherein a sealing gasket material is an oil-resistant asbestos rubber plate, the sealing performance of the central vent valve is poor due to the overlarge hardness of the sealing gasket material, the leakage caused in the operation process of the storage tank cannot be ignored, and meanwhile, the integral structure of the central vent valve is made of carbon steel, the carbon steel materials can generate a mutual friction phenomenon in the operation process, sparks can be generated, and potential safety hazards exist;
the interior top that floats is mainly at present for stainless steel material breather valve, and the structure is unanimous with outer top that floats, has only made certain adjustment in size, and sealing material changes rubber for a bit, but because the dead weight of breather valve is lower, still can not fine solution sealing problem to the potential safety hazard in the operation process is many, so need solve urgently.
SUMMERY OF THE UTILITY MODEL
The utility model provides a floating plate central ventilation valve, its aim at solve the problem that the potential safety hazard takes place for the current central ventilation valve leakproofness is poor, the volume of volatilizing of oil is big, easily produce static.
The utility model adopts the following technical scheme:
a central ventilation valve of a floating disc comprises a valve body, a valve cover, a valve ejector rod, a valve body sealing gasket, a foot margin and an electrical connection; the upper port of the valve body is provided with a circle of annular valve mounting seat which extends out of the valve port along the radial direction, the valve mounting seat is provided with the valve body sealing gasket, the valve body sealing gasket comprises an annular upper sealing plate and an annular lower sealing plate, the upper surface of the valve mounting seat is coaxially fixed with the upper sealing plate, the lower surface of the valve mounting seat is coaxially fixed with the lower sealing plate, and when the valve cover is closed, the valve body is closed by pressing the upper sealing plate; the lower part of the lower sealing plate is provided with a guide pipe;
the pipe wall of the guide pipe is symmetrically provided with positioning rib plates and is fixedly connected with the bottom of the lower sealing plate, the lower end of the guide pipe extends downwards to the lower part of the valve body or the floating disc, and an aluminum alloy valve ejector rod is coaxially arranged in the guide pipe in a sliding fit manner; the upper end of the aluminum alloy valve ejector rod is connected with the bottom of the valve cover, and the lower end of the aluminum alloy valve ejector rod is suspended;
a good sealing gasket is arranged between the upper sealing plate and the valve cover; the valve cover is of a double-layer metal plate composite structure, the upper layer plate is a stainless steel plate, and the lower layer plate is an aluminum alloy plate.
The valve ejector rod is a hollow tube, the upper end of the valve ejector rod extends out of the guide tube and abuts against the bottom of the valve cover, and the lower end of the valve ejector rod extends out of the guide tube downwards and is connected with a ground foot; a section of screw rod extending downwards is fixed at the middle position of the bottom of the upper layer plate of the valve cover, the screw rod downwards penetrates through a through hole arranged at the middle position of the lower layer plate and then is inserted into the valve ejector rod, and the upper layer plate and the lower layer plate are fastened together through a nut on the screw rod; two threaded through holes are symmetrically formed in two side walls of the valve ejector rod, two positioning screws are symmetrically inserted into the two threaded through holes and connected with the two threaded through holes, the two positioning screws are inserted into the valve ejector rod, and the two positioning screws are located at the upper end part in the valve ejector rod and are vertically limited through nuts inserted into the upper end and the lower end of the screw rod for connection.
The valve body is fixed on the floating disc, and the floating disc is ventilated through the valve body.
The valve ejector rod is characterized in that a thread sleeve is coaxially embedded in a central hole at the lower end of the valve ejector rod, a positioning hole is formed in the position, corresponding to the side wall of the valve ejector rod, of the side wall of the thread sleeve, a positioning pin is inserted into the positioning hole for positioning, and an adjusting screw rod at the upper end of the foot 7 is upwards inserted into the central threaded hole of the thread sleeve for threaded connection and fixation.
The good type gasket is fixed in a ring shape in the groove of the upper seal plate.
And an oil drainage hole is formed in the side wall of the lower end of the valve ejector rod.
The good-type seal ring is a silicone rubber ring-type seal ring.
The upper sealing plate, the valve mounting seat and the lower sealing plate are fixed through bolts in a threaded mode.
The utility model has the advantages as follows:
the utility model changes the matching connection structure and the sealing structure of the valve body and the valve cover as a whole, enlarges the sealing contact surface, and increases the stability and the sealing effect; the valve cover adopts a stainless steel and aluminum alloy double-layer metal plate composite structure and adopts an aluminum alloy valve ejector rod, so that the potential safety hazard of friction static electricity is eliminated by the parts generating mutual friction. The sealing part adopts a silicon rubber O-shaped sealing ring, and compared with the traditional asbestos rubber pad or nitrile rubber pad, the sealing effect is greatly improved. The sealing contact surface adopts precision finishing, effectively guarantees sealed effect. The bottom of the tank is provided with the adjustable ground feet, so that the tank can adapt to deformation of the bottoms of various tanks, and is simple to operate and good in stability.
Description of the drawings:
fig. 1 is a schematic view of the overall structure section of the present invention.
Reference numerals:
1-floating disc, 2-valve body, 21-valve mounting seat, 3-valve cover, 31-screw, 4-valve ejector rod, 41-positioning screw, 42-oil drainage hole, 5-upper sealing plate, 6-lower sealing plate, 61-guide pipe, 62-positioning rib plate, 7-ground foot and 8-electrical connection
The specific implementation mode is as follows:
the following describes the embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1, a central ventilation valve of a floating plate comprises a valve body, a valve cover, a valve ejector rod, a valve body sealing gasket, a foot margin and an electrical connection; the upper port of the valve body 2 is provided with a circle of annular valve mounting seat 21 which radially extends into the valve port, the valve mounting seat 21 is provided with the valve body sealing gasket, the valve body sealing gasket comprises an annular upper sealing plate 5 and an annular lower sealing plate 6, the upper surface of the valve mounting seat 21 is coaxially fixed with the upper sealing plate 5, the lower surface of the valve mounting seat 21 is coaxially fixed with the lower sealing plate 6, and the valve body 2 is sealed by pressing the upper sealing plate 5 when the valve cover 3 is closed; a guide pipe 61 is arranged at the lower part of the lower sealing plate 6;
the pipe wall of the guide pipe 61 is symmetrically provided with positioning rib plates 62 and is fixedly connected with the bottom of the lower sealing plate 6, the lower end of the guide pipe 61 extends downwards to the lower part of the valve body 2 or the floating disc 1, and an aluminum alloy valve ejector rod 4 is coaxially arranged in the guide pipe 61 and is in sliding fit with the guide pipe; the upper end of the aluminum alloy valve ejector rod 4 is connected with the bottom of the valve cover 3, and the lower end of the aluminum alloy valve ejector rod is suspended;
a good sealing gasket is arranged between the upper sealing plate 5 and the valve cover 3; the valve cover 3 is of a double-layer metal plate composite structure, an upper layer plate is a stainless steel plate, and a lower layer plate is an aluminum alloy plate, and the attached drawing 1 shows.
The valve ejector rod 4 is a hollow tube, the upper end of the valve ejector rod 4 extends out of the guide tube 61 and abuts against the bottom of the valve cover 3, and the lower end of the valve ejector rod 4 extends out of the guide tube 61 downwards and is connected with a ground foot 7; a section of screw rod 31 extending downwards is fixed at the middle position of the bottom of the upper plate of the valve cover 3, the screw rod 31 downwards penetrates through a through hole arranged at the middle position of the lower plate and then is inserted into the valve ejector rod 4, and the upper plate and the lower plate are fastened together through a nut on the screw rod 31; two threaded through holes are symmetrically formed in two side walls of the valve ejector rod 4, two positioning screws 41 are symmetrically inserted into the two threaded through holes and connected with the two threaded through holes, the two positioning screws 41 are inserted into the valve ejector rod 4, the two positioning screws 41 are located at the upper end portion of the valve ejector rod 4 and are limited up and down through a nut gap connected with the upper end and the lower end of the screw rod 31 in an inserted mode, and the attached drawing 1 is shown.
The valve body 2 is fixed on the floating disc 1, and the floating disc 1 is ventilated through the valve body 2.
A thread sleeve is coaxially embedded in a central hole at the lower end of the valve ejector rod 4, a positioning hole is formed in the side wall of the thread sleeve corresponding to the side wall of the valve ejector rod 4 and is positioned by inserting a positioning pin into the positioning hole, and an adjusting screw rod at the upper end of the foot 7 is upwards inserted into a central threaded hole of the thread sleeve to be screwed and fixed, as shown in the attached drawing 1.
The good type gasket is fixed in a ring shape in the groove of the upper seal plate 5.
The side wall of the lower end of the valve mandril 4 is provided with an oil drainage hole 42, see the attached figure 1.
The good-type seal ring is a silicone rubber ring-type seal ring.
The upper sealing plate 5, the valve mounting seat 21 and the lower sealing plate 6 are fixed by bolts in a threaded manner.
The working principle is as follows:
when the liquid level of the oil is higher, the floating disc 1 is in a floating state, the feet 7 are separated from the bottom plate of the storage tank, and the valve cover 3 automatically closes the air vent due to the self gravity; when the liquid level of oil is reduced in the using process, the floating disc 1 moves downwards along with the liquid level of the oil, the lower foot 7 at the lower end of the valve ejector rod 4 is supported on the storage tank bottom plate, and the upper end of the valve ejector rod 4 jacks the valve cover 3 for exhausting.
Claims (8)
1. A central ventilation valve of a floating disc comprises a valve body, a valve cover, a valve ejector rod, a valve body sealing gasket, a foot margin and an electrical connection; the method is characterized in that:
the upper port of the valve body (2) is provided with a circle of annular valve mounting seat (21) which radially extends into the valve port, the valve mounting seat (21) is provided with the valve body sealing gasket, the valve body sealing gasket comprises an annular upper sealing plate (5) and a lower sealing plate (6), the upper surface of the valve mounting seat (21) is coaxially fixed with the upper sealing plate (5), the lower surface of the valve mounting seat is coaxially fixed with the lower sealing plate (6), and the valve cover (3) is pressed on the upper sealing plate (5) to seal the valve body (2) when closed; a guide pipe (61) is arranged at the lower part of the lower sealing plate (6);
the pipe wall of the guide pipe (61) is symmetrically provided with positioning rib plates (62) and is fixedly connected with the bottom of the lower sealing plate (6), the lower end of the guide pipe (61) extends downwards to the lower part of the valve body (2) or the floating disc (1), and an aluminum alloy valve ejector rod (4) is coaxially arranged in the guide pipe (61) and is in sliding fit with the guide pipe; the upper end of the aluminum alloy valve ejector rod (4) is connected with the bottom of the valve cover (3), and the lower end of the aluminum alloy valve ejector rod is suspended;
a good sealing gasket is arranged between the upper sealing plate (5) and the valve cover (3); the valve cover (3) is of a double-layer metal plate composite structure, the upper layer plate is a stainless steel plate, and the lower layer plate is an aluminum alloy plate.
2. The central ventilation valve of the floating plate according to claim 1, wherein the valve top rod (4) is a hollow tube, the upper end of the valve top rod (4) extends out of the guide tube (61) and abuts against the bottom of the valve cover (3), and the lower end of the valve top rod extends out of the guide tube (61) downwards and is connected with a ground foot (7); a section of screw rod (31) extending downwards is fixed at the middle position of the bottom of the upper plate of the valve cover (3), the screw rod (31) penetrates through a through hole formed in the middle position of the lower plate downwards and then is inserted into the valve ejector rod (4), and the upper plate and the lower plate are fastened together through nuts on the screw rod (31); two thread through holes are symmetrically formed in two side walls of the valve ejector rod (4), two positioning screws (41) are symmetrically inserted into the two thread through holes and connected with each other, the two positioning screws (41) are inserted into the valve ejector rod (4), the two positioning screws (41) are located at the upper end part in the valve ejector rod (4) and are limited up and down through inserting nut gaps connected with the upper end and the lower end of the screw rod (31).
3. A central vent valve of a floating plate according to claim 1, wherein the valve body (2) is fixed to the floating plate (1), and the floating plate (1) is vented through the valve body (2).
4. The central ventilation valve of floating plate according to claim 2, characterized in that a thread socket is coaxially inserted into the central hole of the lower end of the valve post rod (4), a positioning hole is arranged on the side wall of the thread socket corresponding to the side wall of the valve post rod (4) and is positioned by inserting a positioning pin into the positioning hole, and an adjusting screw rod at the upper end of the foot pin (7) is upwards inserted into the central threaded hole of the thread socket and is screwed and fixed.
5. The valve of claim 1, wherein the good type gasket is fixed in a ring shape in a groove of the upper sealing plate (5).
6. A central ventilation valve of floating plate as claimed in claim 1, characterized in that the side wall of the lower end of the valve stem (4) is provided with an oil drainage hole (42).
7. The valve of claim 1, wherein said good type seal ring is a silicon rubber ring-shaped good type seal ring.
8. The central breather valve of claim 1, wherein the upper seal plate (5), the valve mounting seat (21), and the lower seal plate (6) are fixed by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020299635.7U CN211779305U (en) | 2020-03-12 | 2020-03-12 | Floating disc central ventilation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020299635.7U CN211779305U (en) | 2020-03-12 | 2020-03-12 | Floating disc central ventilation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211779305U true CN211779305U (en) | 2020-10-27 |
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ID=72939291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020299635.7U Active CN211779305U (en) | 2020-03-12 | 2020-03-12 | Floating disc central ventilation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211779305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112811019A (en) * | 2021-02-05 | 2021-05-18 | 沃德林科环保设备（北京）有限公司 | Multifunctional full-liquid-receiving inner floating disc central ventilation valve |
-
2020
- 2020-03-12 CN CN202020299635.7U patent/CN211779305U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112811019A (en) * | 2021-02-05 | 2021-05-18 | 沃德林科环保设备（北京）有限公司 | Multifunctional full-liquid-receiving inner floating disc central ventilation valve |
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