CN211715402U - Rubber membrane type pressure balance air guide sleeve - Google Patents
Rubber membrane type pressure balance air guide sleeve Download PDFInfo
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- CN211715402U CN211715402U CN201922482036.9U CN201922482036U CN211715402U CN 211715402 U CN211715402 U CN 211715402U CN 201922482036 U CN201922482036 U CN 201922482036U CN 211715402 U CN211715402 U CN 211715402U
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- rubber membrane
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Abstract
The utility model discloses a rubber membrane type pressure balance air guide sleeve, which comprises a sleeve body and a membrane type pressure balance assembly, wherein the sleeve body is fixed on a guide vane supporting body of a diving tubular pump, and the inner part of the sleeve body forms a closed space; the diaphragm type pressure balance assembly is connected to the cover body and comprises an outer end cover, an inner end cover and a rubber membrane, the inner end cover and the outer end cover are fixed on the cover body, a balance cavity is formed by enclosing between the inner end cover and the outer end cover, a plurality of first radial through holes communicated with the balance cavity are formed in the inner end cover, a plurality of second radial through holes are formed in the outer end cover, the end portion of the rubber membrane is fixed between the inner end cover and the outer end cover, and the rubber membrane is arranged on the inner side of the outer end cover and separates the second radial through holes from the balance cavity. By adopting the structure, the rubber membrane can sense the pressure change in the flowing process, the internal and external pressures of the air guide sleeve are kept in a balanced state, and the internal and external pressure difference of the sealing device is ensured to be in a smaller range.
Description
Technical Field
The utility model relates to the field of fluid machinery, especially, relate to a rubber diaphragm type pressure balance kuppe.
Background
The submersible tubular pump is directly arranged in a flow channel by connecting a water pump impeller, a rear guide vane, a hydraulic motor and the like into a whole, and the pump unit section forms a whole body which is convenient for integral hoisting, is convenient to install and is particularly suitable for being matched with a movable drainage vehicle for use. Because the existing hydraulic motor is soaked in water for working for a long time, the requirement of the existing hydraulic element on the working environment is damaged, and meanwhile, the shape of the flow channel is extremely irregular due to the appearance of the hydraulic motor, so that the working efficiency of the whole unit is invisibly reduced.
Disclosure of Invention
An object of the utility model is to provide a do reliable, can experience the pressure variation in the runner, guarantee inside and outside differential pressure at less within range, improved the rubber diaphragm type pressure balance kuppe of sealed stagnant water reliability.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a rubber membrane type pressure balance air guide sleeve is used for a submersible tubular pump and is characterized in that: the submersible tubular pump comprises a cover body and a diaphragm type pressure balance assembly, wherein the cover body is fixed on a guide vane supporting body of the submersible tubular pump, a closed space is formed inside the cover body, a hydraulic motor of the submersible tubular pump is arranged in the closed space inside the cover body, and the closed space is filled with hydraulic oil; the diaphragm type pressure balance assembly is connected to the cover body and comprises an outer end cover, an inner end cover and a rubber membrane, the inner end cover and the outer end cover are fixed on the cover body, a balance cavity is formed by enclosing between the inner end cover and the outer end cover, a plurality of first radial through holes communicated with the balance cavity are formed in the inner end cover, a plurality of second radial through holes are formed in the outer end cover, the end portion of the rubber membrane is fixed between the inner end cover and the outer end cover, and the rubber membrane is arranged on the inner side of the outer end cover and separates the second radial through holes from the balance cavity.
The end part of the rubber membrane is provided with a circle of integrally formed flange edge, the flange edge is provided with a circle of raised sealing part, and the flange edge is clamped and fixed between the inner end cover and the outer end cover.
And a sealing ring is arranged between the end part of the inner end cover and the inner spigot of the end part of the cover body.
The cover body is connected with a liquid filling valve and an exhaust valve.
The liquid filling valve comprises a first valve body, a valve seat, a compression spring, a valve ball, a locking elastic sheet and a sealing bolt, wherein the first valve body is fixed on the cover body, the valve seat is fixed on the first valve body, a valve cavity communicated with the inside of the cover body is arranged in the valve seat, one end of the compression spring is connected to one end of the valve cavity facing the inside of the cover body, the other end of the compression spring is connected with the valve ball, one end, far away from the inside of the cover body, of the valve cavity is provided with a liquid filling port, the compression spring drives the valve ball to block the liquid filling port, one end, far away from the inside of the cover body, of the first valve body is provided with a threaded port, the sealing bolt is in the threaded.
The exhaust valve comprises a second valve body and a valve core, the second valve body is fixed on the cover body, a cavity communicated with the interior of the cover body is arranged on the second valve body, an exhaust hole is formed in one end, facing the cover body, of the cavity, the upper portion of the valve core is in threaded connection with the valve body, a conical portion is arranged at the bottom of the valve core, and the conical portion is inserted into and blocks the exhaust hole.
The bottom of the cover body is provided with an end flange, the end flange is connected and fixed on the guide vane supporting body through a locking bolt, and a sealing strip is arranged between the end flange and the guide vane supporting body.
The utility model adopts the above technique, following beneficial effect has: the rubber membrane can sense the pressure change in the flowing, the internal and external pressures of the air guide sleeve are kept in a balanced state, the internal and external pressure difference of the sealing device is ensured to be in a smaller range, and in addition, the sealing of the rubber membrane does not involve the matching of a sliding pair, so that the working reliability is improved. The utility model discloses simple structure, convenient operation, safe and reliable.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments;
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of a diaphragm pressure balance assembly;
FIG. 3 is a cross-sectional view of a rubber membrane;
FIG. 4 is a schematic structural view of a prefill valve;
fig. 5 is a schematic structural view of the exhaust valve.
Detailed Description
As shown in one of fig. 1-5, the utility model discloses rubber diaphragm type pressure balance kuppe for on the dive tubular pump, it is including the cover body 1 and diaphragm type pressure balance assembly 2, the cover body 1 is fixed on the stator supporter 3 of dive tubular pump and inside forms airtight space, and the hydraulic motor 4 of dive tubular pump is arranged in cover body 1 inside airtight space, be full of hydraulic oil in the airtight space.
The diaphragm type pressure balance assembly is connected to the cover body 1 and comprises an outer end cover 22, an inner end cover 21 and a rubber membrane 23, the inner end cover 21 and the outer end cover 22 are fixed on the cover body 1, a balance cavity is formed by enclosing the inner end cover 21 and the outer end cover 22, a plurality of first radial through holes 211 communicated with the balance cavity are formed in the inner end cover 21, a plurality of second radial through holes 221 are formed in the outer end cover 22, the end portion of the rubber membrane 23 is fixed between the inner end cover 21 and the outer end cover 22, and the rubber membrane 23 is arranged on the inner side of the outer end cover 22 and separates the second radial through holes 221 from the balance cavity.
The end of the rubber membrane 23 has a ring of integrally formed flange 231, the flange 231 has a ring of raised sealing portion 232 thereon, and the flange is clamped and fixed between the inner end cap 21 and the outer end cap 22 to form an end seal. In addition, a sealing ring 24 is arranged between the end part of the inner end cover 21 and the inner spigot of the end part of the cover body 1, so that the inside and the outside of the air guide sleeve are reliably separated.
The cover body 1 is connected with a liquid filling valve 5 and an exhaust valve 6. The charge valve 5 and the discharge valve 6 are not limited to be mounted on a protective cover, but may be mounted on a casing of a submersible tubular pump through a pipe.
The liquid filling valve 5 comprises a first valve body 51, a valve seat 52, a compression spring 53, a valve ball 54, a locking elastic sheet 55 and a sealing bolt 56, wherein the first valve body 51 is fixed on the cover body 1, the valve seat 52 is fixed on the first valve body 51, a valve cavity communicated with the interior of the cover body 1 is arranged in the valve seat 52, one end of the compression spring 53 is connected to one end, facing the interior of the cover body 1, of the valve cavity, the other end of the compression spring 53 is fixedly connected with the valve ball 54, a liquid filling port is arranged at one end, far away from the interior of the cover body 1, of the valve cavity, the compression spring 53 drives the valve ball to block the liquid filling port, a threaded port is formed at one end, far away from the interior of the cover body 1, of the first valve body 51, the sealing bolt 56 is in the threaded.
The exhaust valve 6 comprises a second valve body 61 and a valve core 62, the second valve body 61 is fixed on the cover body 1, a cavity communicated with the inside of the cover body 1 is arranged on the second valve body 61, an exhaust hole is formed in one end, facing the cover body 1, of the cavity, the upper portion of the valve core 62 is in threaded connection with the second valve body 61, a conical portion is arranged at the bottom of the valve core 62, and the conical portion is inserted into and seals the exhaust hole.
The bottom of the cover body 1 is provided with an end flange 11, the end flange 11 is connected and fixed on the guide vane supporting body 3 through a locking bolt, and a sealing strip is arranged between the end flange 11 and the guide vane supporting body 3.
The utility model discloses a theory of operation: the protective cover separates the hydraulic motor from the conveying fluid, and is designed into a resistance-reducing shape, so that the protective cover is filled with hydraulic oil for good heat dissipation of the hydraulic motor, and meanwhile, lubricating liquid is provided for the bearing.
The inner side of the rubber film 23 bears the internal pressure of the air guide sleeve, the outer side of the rubber film 23 bears the pressure of the water pressing chamber outside the air guide sleeve, and the rubber film 23 can move under the pressure change, so that the pressure in the sealed space is basically equal to the pressure in the flow channel, and the sealing element bears lower pressure difference.
In the process of oil filling, the sealing bolt 56 is taken down from the threaded port, an oil pipe of the oil filling equipment is connected to the threaded port, the exhaust valve 6 is adjusted to the highest point, the exhaust valve 6 is loosened by a small amount, and then oil filling is started. And in the oil filling process, observing the exhaust state of the exhaust valve 6, closing the exhaust valve 6 when oil flows out, stopping filling the oil, taking down the oil pipe, and screwing the sealing bolt 56.
The practice of the present invention has been described with reference to the accompanying drawings, but the invention is not limited to the embodiments described above, which are illustrative rather than limiting, and it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (7)
1. A rubber membrane type pressure balance air guide sleeve is used for a submersible tubular pump and is characterized in that: the submersible tubular pump comprises a cover body and a diaphragm type pressure balance assembly, wherein the cover body is fixed on a guide vane supporting body of the submersible tubular pump, a closed space is formed inside the cover body, a hydraulic motor of the submersible tubular pump is arranged in the closed space inside the cover body, and the closed space is filled with hydraulic oil; the diaphragm type pressure balance assembly is connected to the cover body and comprises an outer end cover, an inner end cover and a rubber membrane, the inner end cover and the outer end cover are fixed on the cover body, a balance cavity is formed by enclosing between the inner end cover and the outer end cover, a plurality of first radial through holes communicated with the balance cavity are formed in the inner end cover, a plurality of second radial through holes are formed in the outer end cover, the end portion of the rubber membrane is fixed between the inner end cover and the outer end cover, and the rubber membrane is arranged on the inner side of the outer end cover and separates the second radial through holes from the balance cavity.
2. The rubber membrane pressure balance boot of claim 1, wherein: the end part of the rubber membrane is provided with a circle of integrally formed flange edge, the flange edge is provided with a circle of raised sealing part, and the flange edge is clamped and fixed between the inner end cover and the outer end cover.
3. The rubber membrane pressure balance boot of claim 1, wherein: and a sealing ring is arranged between the end part of the inner end cover and the inner spigot of the end part of the cover body.
4. The rubber membrane pressure balance boot of claim 1, wherein: the cover body is connected with a liquid filling valve and an exhaust valve.
5. The rubber membrane pressure balance boot of claim 4, wherein: the liquid filling valve comprises a first valve body, a valve seat, a compression spring, a valve ball, a locking elastic sheet and a sealing bolt, wherein the first valve body is fixed on the cover body, the valve seat is fixed on the first valve body, a valve cavity communicated with the inside of the cover body is arranged in the valve seat, one end of the compression spring is connected to one end of the valve cavity facing the inside of the cover body, the other end of the compression spring is connected with the valve ball, one end, far away from the inside of the cover body, of the valve cavity is provided with a liquid filling port, the compression spring drives the valve ball to block the liquid filling port, one end, far away from the inside of the cover body, of the first valve body is provided with a threaded port, the sealing bolt is in the threaded.
6. The rubber membrane pressure balance boot of claim 4, wherein: the exhaust valve comprises a second valve body and a valve core, the second valve body is fixed on the cover body, a cavity communicated with the interior of the cover body is arranged on the second valve body, an exhaust hole is formed in one end, facing the cover body, of the cavity, the upper portion of the valve core is in threaded connection with the valve body, a conical portion is arranged at the bottom of the valve core, and the conical portion is inserted into and blocks the exhaust hole.
7. The rubber membrane pressure balance boot of claim 1, wherein: the bottom of the cover body is provided with an end flange, the end flange is connected and fixed on the guide vane supporting body through a locking bolt, and a sealing strip is arranged between the end flange and the guide vane supporting body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922482036.9U CN211715402U (en) | 2019-12-30 | 2019-12-30 | Rubber membrane type pressure balance air guide sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922482036.9U CN211715402U (en) | 2019-12-30 | 2019-12-30 | Rubber membrane type pressure balance air guide sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211715402U true CN211715402U (en) | 2020-10-20 |
Family
ID=72821719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922482036.9U Active CN211715402U (en) | 2019-12-30 | 2019-12-30 | Rubber membrane type pressure balance air guide sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211715402U (en) |
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2019
- 2019-12-30 CN CN201922482036.9U patent/CN211715402U/en active Active
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