CN214944915U - Pump shaft seal lubricating seal self-circulation protection device - Google Patents
Pump shaft seal lubricating seal self-circulation protection device Download PDFInfo
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- CN214944915U CN214944915U CN202023011173.3U CN202023011173U CN214944915U CN 214944915 U CN214944915 U CN 214944915U CN 202023011173 U CN202023011173 U CN 202023011173U CN 214944915 U CN214944915 U CN 214944915U
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Abstract
A pump shaft seal lubrication seal self-circulation protection device is used for protecting a plunger type metering pump, the plunger type metering pump is connected with the bottom of a seal cylinder in a sealing manner, the lower end of a plunger of the plunger type metering pump is arranged in the plunger type metering pump, and the moving range of the upper end of the plunger type metering pump is limited in the seal cylinder; the upper end of the plunger is fixedly connected with a piston, and the diameter of the piston is larger than that of the plunger; the outer wall of a piston sleeve of the piston is hermetically connected with the top of the sealing cylinder; the piston is connected with a driving device and is driven by the driving device; the side surface of the sealing cylinder is hermetically connected with a liquid storage tank which is stored with protective liquid through a liquid inlet pipe and a liquid outlet pipe, and the protective liquid lubricates the plunger and isolates air attached to the surface of the plunger; the liquid inlet pipe and the liquid outlet pipe are respectively provided with a one-way valve, the protection liquid in the liquid inlet pipe flows into the liquid storage tank in a one-way mode through the one-way valve, the protection liquid in the liquid outlet pipe flows into the sealing cylinder in a one-way mode through the one-way valve, and the liquid inlet pipe is arranged below the liquid outlet pipe. The utility model discloses can reach and play lubricated, the isolated air's of plunger effect.
Description
Technical Field
The utility model relates to a plunger type measuring pump especially relates to a sealed protection, lubricating arrangement of measuring pump.
Background
The reciprocating bidirectional plunger metering pump is widely applied, a piston rod of the reciprocating bidirectional plunger metering pump continuously reciprocates, a certain amount of liquid film is difficult to avoid following the surface of the piston rod, some liquid contacts with moisture in air to generate chemical reaction to form hard solid film layers, and the hard solid film layers easily damage an oil seal ring of the metering pump, so that the liquid leaks to pollute the environment and simultaneously influence the discharge pressure and the precision of the metering pump.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned not enough that exists at present, the utility model provides a pump shaft seals lubricated sealed self-loopa protection device can reach sealed protection piston rod, carry out lubricated effect to the piston rod.
In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:
a pump shaft seal lubrication sealing self-circulation protection device comprises a sealing cylinder, wherein the bottom of the sealing cylinder is connected with a shaft seal of a plunger metering pump in a sealing manner, the lower end of the plunger is arranged in the plunger metering pump, the upper end of the plunger is fixedly connected with one end of a piston, and the diameter of the piston is larger than that of the plunger; the piston is connected with the top wall of the sealing cylinder in a sealing way through a piston sleeve; the other end of the piston is connected with a driving device and is driven by the driving device to do piston motion in the piston sleeve; the sealing cylinder is also connected with a liquid storage tank which stores protective liquid in a sealing way through a liquid inlet pipe and a liquid outlet pipe; and the liquid inlet pipe and the liquid outlet pipe are respectively provided with a one-way valve.
According to an aspect of the utility model, drive arrangement is a carousel, the quotation of carousel is vertical to be established the piston top, quotation one side swing joint one end of rocking handle of carousel, the other end of rocking handle with the upper end swing joint of transmission piston.
According to an aspect of the utility model, the feed liquor pipe is established drain pipe below.
According to an aspect of the utility model, the drain pipe level sets up, the height of drain pipe with the bottom parallel and level of the piston sleeve of piston.
According to the utility model discloses an aspect, feed liquor pipe level sets up, the height of feed liquor pipe with plunger shaft seal department parallel and level of plunger type metering pump.
According to an aspect of the present invention, the liquid storage tank is a transparent tank.
According to one aspect of the utility model, be equipped with the scale on the can body of liquid storage pot.
The utility model discloses the advantage of implementing: since the movable range of the upper end of the plunger is limited to the inside of the sealing cylinder; the upper end of the plunger is fixedly connected with a piston, and the diameter of the piston is larger than that of the plunger; the outer wall of the piston sleeve of the piston is hermetically connected with the top of the sealing cylinder; the piston is connected with a driving device and is driven by the driving device; the side surface of the sealing cylinder is hermetically connected with a liquid storage tank which stores protective liquid through a liquid inlet pipe and a liquid outlet pipe, and the protective liquid lubricates the plunger and isolates air attached to the surface of the plunger; the liquid inlet pipe and the liquid outlet pipe are respectively provided with a one-way valve, the protection liquid in the liquid inlet pipe flows into the liquid storage tank in a one-way mode through the one-way valve, the protection liquid in the liquid outlet pipe flows into the sealing cylinder in a one-way mode through the one-way valve, the liquid inlet pipe is arranged below the liquid outlet pipe, when the piston and the plunger move upwards, the air pressure in the sealing cylinder is reduced, and the protection liquid flows into the sealing cylinder from the liquid storage tank through the liquid outlet pipe under the action of air pressure difference; when the piston and the plunger move downwards, the air pressure in the sealing cylinder is increased, and the protection liquid passes through the liquid inlet pipe from the sealing cylinder under the action of the air pressure difference. The protective liquid keeps adhering to the plunger in continuous movement, and plays roles of lubricating and isolating air.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a pump shaft seal lubrication sealing self-circulation protection device of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a pump shaft seal lubrication seal self-circulation protection device is used for protecting a plunger type metering pump 1, the plunger type metering pump is hermetically connected with the bottom of a sealing cylinder 2, the lower end of a plunger 3 of the plunger type metering pump is arranged in the plunger type metering pump, and the moving range of the upper end of the plunger is limited in the sealing cylinder; the upper end of the plunger is fixedly connected with a piston 4, and the diameter of the piston is larger than that of the plunger; the outer wall of the piston sleeve of the piston is hermetically connected with the top of the sealing cylinder; the piston is connected with a driving device and is driven by the driving device; the side surface of the sealing cylinder is hermetically connected with a liquid storage tank 5 which stores protective liquid through a liquid inlet pipe and a liquid outlet pipe, and the protective liquid lubricates the plunger and isolates air attached to the surface of the plunger; all be equipped with check valve 6 on feed liquor pipe, the drain pipe, protection liquid in the feed liquor pipe passes through the one-way inflow liquid storage pot of check valve, protection liquid in the drain pipe passes through the one-way inflow sealed jar of check valve, the feed liquor pipe is established the drain pipe below.
The driving device drives the piston to move axially, and the piston drives the plunger fixedly connected with the piston to move axially, so that the displacement distance of the piston is the same as that of the plunger; because the diameter of the piston is larger than that of the plunger, under the condition that the displacement distance is the same, when the piston and the plunger move upwards, the air pressure in the sealing cylinder is reduced, and the protection liquid flows into the sealing cylinder from the liquid storage tank through the liquid outlet pipe under the action of the air pressure difference; when the piston and the plunger move downwards, the air pressure in the sealing cylinder is increased, and the protection liquid passes through the liquid inlet pipe from the sealing cylinder under the action of the air pressure difference. The protective liquid keeps adhering to the plunger in continuous movement, and plays roles of lubricating and isolating air.
The driving device is a rotary table, the disc surface of the rotary table is vertically arranged above the piston, one side of the disc surface of the rotary table is movably connected with one end of a rocking handle 7, and the other end of the rocking handle is movably connected with the upper end of the transmission piston. When the rotary table rotates, one end of the rocking handle makes circular motion around the circle center of the rotary table, and as the disc surface is vertically arranged, one end of the rocking handle can drive the other end to move in the axial direction of the piston, so that the piston is driven to make axial motion.
The liquid inlet pipe is arranged below the liquid outlet pipe. The drain pipe is horizontally arranged, and the height of the drain pipe is flush with the bottom of the piston sleeve of the piston. The liquid inlet pipe is horizontally arranged, and the height of the liquid inlet pipe is flush with the plunger shaft seal of the plunger type metering pump.
The liquid storage tank is a transparent tank. The state of the protective liquid can be observed conveniently, and the protective liquid can be replaced in time after going bad.
The body of the liquid storage tank is provided with scales.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A pump shaft seal lubrication sealing self-circulation protection device is characterized in that the pump shaft seal lubrication sealing self-circulation protection device comprises a sealing cylinder, the bottom of the sealing cylinder is connected with a shaft seal of a plunger type metering pump in a sealing manner, the lower end of the plunger is arranged in the plunger type metering pump, the upper end of the plunger is fixedly connected with one end of a piston, and the diameter of the piston is larger than that of the plunger; the piston is connected with the top wall of the sealing cylinder in a sealing way through a piston sleeve; the other end of the piston is connected with a driving device and is driven by the driving device to do piston motion in the piston sleeve; the sealing cylinder is also connected with a liquid storage tank which stores protective liquid in a sealing way through a liquid inlet pipe and a liquid outlet pipe; and one-way valves in opposite directions are arranged on the liquid inlet pipe and the liquid outlet pipe.
2. The pump shaft seal lubricating and sealing self-circulation protection device according to claim 1, wherein the driving device is a rotary table, the disc surface of the rotary table is vertically arranged above the piston, one side of the disc surface of the rotary table is movably connected with one end of a rocking handle, and the other end of the rocking handle is movably connected with the upper end of the piston.
3. The pump shaft seal lubrication seal self-circulation protection device according to claim 1, wherein the liquid inlet pipe is arranged below the liquid outlet pipe.
4. The pump shaft seal lubrication seal self-circulation protection device according to claim 1, wherein the liquid outlet pipe is horizontally arranged, and the height of the liquid outlet pipe is flush with the bottom of the piston sleeve of the piston.
5. The pump shaft seal lubrication seal self-circulation protection device according to claim 1, wherein the liquid inlet pipe is horizontally arranged, and the height of the liquid inlet pipe is flush with the plunger shaft seal of the plunger type metering pump.
6. The pump shaft seal lubrication seal self-circulation protection device according to claim 1, wherein the liquid storage tank is a transparent tank.
7. The pump shaft seal lubrication seal self-circulation protection device according to claim 3, wherein a scale is arranged on the tank body of the liquid storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023011173.3U CN214944915U (en) | 2020-12-15 | 2020-12-15 | Pump shaft seal lubricating seal self-circulation protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023011173.3U CN214944915U (en) | 2020-12-15 | 2020-12-15 | Pump shaft seal lubricating seal self-circulation protection device |
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| Publication Number | Publication Date |
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| CN214944915U true CN214944915U (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023011173.3U Active CN214944915U (en) | 2020-12-15 | 2020-12-15 | Pump shaft seal lubricating seal self-circulation protection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915118A (en) * | 2021-12-13 | 2022-01-11 | 山东尤科斯石油装备有限公司 | Fracturing plunger pump with oil circuit detection and alarm functions |
-
2020
- 2020-12-15 CN CN202023011173.3U patent/CN214944915U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915118A (en) * | 2021-12-13 | 2022-01-11 | 山东尤科斯石油装备有限公司 | Fracturing plunger pump with oil circuit detection and alarm functions |
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