CN113217629A - Oil seal assembly and mounting method thereof - Google Patents
Oil seal assembly and mounting method thereof Download PDFInfo
- Publication number
- CN113217629A CN113217629A CN202010072478.0A CN202010072478A CN113217629A CN 113217629 A CN113217629 A CN 113217629A CN 202010072478 A CN202010072478 A CN 202010072478A CN 113217629 A CN113217629 A CN 113217629A
- Authority
- CN
- China
- Prior art keywords
- oil seal
- oil
- box body
- framework
- pressing cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The disclosure provides an oil seal assembly and an installation method thereof, and belongs to the technical field of water injection equipment. The oil seal case is fitted over the tappet and the end of the oil seal case having the inner flange is mounted to the crankcase. The oil seal pressing cap is arranged at one end of the oil seal box body, the framework oil seal is coaxially arranged in the oil seal box body and is positioned between the oil seal pressing cap and the inner flange, and one end of the framework oil seal bears the internal pressure from the crankcase. The inner diameter of one end, close to the framework oil seal, of the oil seal pressing cap is larger than that of one end, far away from the framework oil seal, of the oil seal pressing cap, and the oil seal pressing cap, the oil seal box body and the framework oil seal enclose a closed space. Through the oil seal, the oil guide hole in the pressing cap at the end with the larger inner diameter of the pressing cap, the oil guide hole in the first box body on the oil seal box body and the inside of the crankcase are communicated, so that the pressure in the closed space is approximately equal to the pressure at one end of the framework oil seal, accelerated aging of the framework oil seal due to unequal pressures at two ends is avoided, the replacement frequency of the framework oil seal is reduced, and the maintenance cost is reduced.
Description
Technical Field
The disclosure relates to the technical field of water injection equipment, in particular to an oil seal assembly and an installation method thereof.
Background
Reciprocating plunger pumps are water injection equipment widely used in oil field production. The reciprocating plunger pump includes at least a crankcase, a crankshaft, a tappet, and a pump head. The crankshaft and the tappet are coaxially connected and arranged in the crankcase, and the tappet extends out of the crankcase and is connected with the pump head. And a tappet oil seal assembly for preventing water is arranged at an outlet of the tappet extending out of the crankcase.
The tappet oil seal assembly that uses at present comprises oil blanket box body, skeleton oil blanket and oil blanket pressure cap, and oil blanket box body, skeleton oil blanket and oil blanket pressure cap are the tube-shape, and the coaxial cover of oil blanket box body is on the tappet and fixed with the crankcase, and the skeleton oil blanket presses the cap to set up in the oil blanket box body with the oil blanket is coaxial in proper order, and the oil blanket presses the cap to be located the one end that the crankcase was kept away from to the oil blanket box body, skeleton oil blanket sealing tappet and the oil blanket box body of.
The related art has at least the following problems:
because the oil blanket box body intercommunication is on the crankcase, because the crankcase pressure is great, the skeleton oil blanket during operation, the pressure that is close to crankcase one side can be greater than the pressure of opposite side, leads to the pressure of skeleton oil blanket both sides to vary, and the pressure differential of skeleton oil blanket both sides can accelerate the ageing and wearing and tearing of skeleton oil blanket, leads to the skeleton oil blanket often to need to be changed, increases cost of maintenance.
Disclosure of Invention
The embodiment of the disclosure provides an oil seal assembly and an installation method thereof, which can reduce the aging and abrasion of a framework oil seal and reduce the maintenance cost. The technical scheme is as follows:
the embodiment of the disclosure provides an oil seal assembly, which comprises an oil seal box body, an oil seal pressing cap and a framework oil seal, wherein the oil seal box body and the oil seal pressing cap are cylindrical, the framework oil seal is annular,
the oil seal pressing cap is coaxially connected with one end of the oil seal box body, the other end of the oil seal box body is provided with a coaxial inner flange, the side wall of the oil seal box body is provided with a first box body oil guide hole, the framework oil seal is coaxially arranged in the oil seal box body and is positioned between the oil seal pressing cap and the inner flange, the framework oil seal is in sealing fit with the inner wall of the oil seal box body, the inner diameter of one end, close to the framework oil seal, of the oil seal pressing cap is larger than that of one end, far away from the framework oil seal, of the oil seal pressing cap, the end with smaller inner diameter of the oil seal pressing cap is used for clearance fit with a tappet of the reciprocating plunger pump, the inner diameter of the end with larger inner diameter of the oil seal pressing cap is larger than the inner diameter of the framework oil seal, the side wall of the oil seal pressing cap is provided with a pressing cap oil guide hole communicated with the first box body oil guide hole, and the pressing cap oil guide hole is located at one end, with the larger inner diameter, of the oil seal pressing cap.
Optionally, the outer wall of the oil seal pressing cap is in threaded fit with the inner wall of the oil seal box body, and the external threads of the oil seal pressing cap are distributed at one end with the smaller inner diameter of the oil seal pressing cap.
Optionally, the great one end of oil blanket pressure cap internal diameter with the skeleton oil blanket offsets, have coaxial annular tang on the outer wall of the great one end of oil blanket pressure cap internal diameter, annular tang with it is equipped with the sealing washer to press from both sides between the skeleton oil blanket.
Optionally, the oil seal assembly includes at least two framework oil seals, each of the at least two framework oil seals is located between the oil seal pressing cap and the inner flange, an oil slinger is disposed between the adjacent framework oil seals, an oil slinger oil guide hole is radially formed in the oil slinger, and a second box oil guide hole communicated with the oil slinger oil guide hole is formed in the oil seal box body.
Optionally, one end of the oil seal box body is provided with a flange.
The embodiment of the disclosure provides an oil seal assembly installation method, which is applied to the oil seal assembly as described above, and the oil seal assembly installation method includes:
coaxially sleeving the oil seal box body on a tappet of the reciprocating plunger pump, moving the oil seal box body and fixing the oil seal box body on a crankcase of the reciprocating plunger pump;
sleeving the framework oil seal on the tappet rod and moving the tappet rod into the oil seal box body;
and coaxially sleeving the oil seal pressing cap to the tappet rod and moving the oil seal pressing cap to enable the oil seal pressing cap to be connected to one end of the oil seal box body.
Optionally, with the skeleton oil blanket cover establish to on the tappet rod and remove to in the oil blanket box body, include:
one end of the tappet is sleeved with a rubber sleeve with the inner diameter smaller than the diameter of the tappet;
and sleeving the framework oil seal to the rubber sleeve and moving the framework oil seal into the oil seal box body.
Optionally, the method further comprises:
before the framework oil seal sleeve is arranged on the rubber sleeve, lubricating oil is uniformly smeared on the outer wall of the rubber sleeve.
Optionally, the method further comprises:
before the framework oil seal is sleeved on the rubber sleeve, a closing-in spring on the framework oil seal is taken down;
sleeving the framework oil seal on the rubber sleeve;
mounting the closing-in spring to the framework oil seal;
and moving the framework oil seal into the oil seal box body.
Optionally, will the skeleton oil blanket remove to in the oil blanket box body, include:
a push cylinder is sleeved outside the tappet, and the inner diameter of the push cylinder is larger than the diameter of the tappet;
the framework oil seal is pushed into the oil seal box body through the pushing cylinder.
The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise: and sleeving an oil seal box body in the oil seal assembly on the tappet rod, and installing one end, provided with an inner flange, of the oil seal box body on the crankcase. The oil seal pressing cap is coaxially arranged at one end of the oil seal box body, the framework oil seal is coaxially arranged in the oil seal box body and is located between the oil seal pressing cap and the inner flange, the framework oil seal is in sealing fit with the inner wall of the oil seal box body, and one end, close to the inner flange, of the framework oil seal bears the internal pressure from the crankcase. The inner diameter of one end, close to the framework oil seal, of the oil seal pressing cap is larger than the inner diameter of one end, far away from the framework oil seal, of the oil seal pressing cap, the end, with the smaller inner diameter, of the oil seal pressing cap can be in clearance fit with the tappet, the inner diameter of the end, with the larger inner diameter, of the oil seal pressing cap is larger than the inner diameter of the framework oil seal, and the oil seal pressing cap, the oil seal box body and the framework oil seal can enclose into a closed space. Because the first box body oil guide hole in the side wall of the oil seal box body is communicated with the oil guide hole in the end, located at the end with the larger inner diameter, of the oil seal pressing cap on the side wall of the oil seal pressing cap, the first box body oil guide hole can be communicated with the inside of the crankcase, so that the pressure in the closed space is approximately equal to the internal pressure of the crankcase, the pressures at the two ends of the framework oil seal are balanced, accelerated aging of the framework oil seal due to unequal pressures at the two ends is avoided, the replacement times of the framework oil seal are reduced, and the maintenance cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an oil seal assembly provided in an embodiment of the present disclosure;
FIG. 2 is a flow chart of a method for installing an oil seal assembly according to an embodiment of the disclosure;
fig. 3 is a schematic view of a use state of the rubber sleeve provided by the embodiment of the disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an oil seal assembly provided in an embodiment of the present disclosure, and as shown in fig. 1, the oil seal assembly includes an oil seal box 1, an oil seal pressure cap 2 and a framework oil seal 3, the oil seal box 1 and the oil seal pressure cap 2 are in a tubular shape, and the framework oil seal 3 is in an annular shape.
The oil blanket presses cap 2 coaxial coupling in the one end of oil blanket box body 1, the other end of oil blanket box body 1 has coaxial inner flange 11, first box body oil guide hole 12 has on the lateral wall of oil blanket box body 1, skeleton oil blanket 3 coaxial arrangement just is located between oil blanket pressure cap 2 and the inner flange 11 in the oil blanket box body 1, skeleton oil blanket 3 and the sealed cooperation of the inner wall of oil blanket box body 1, the internal diameter that the oil blanket presses cap 2 one end that is close to skeleton oil blanket 3 is greater than the internal diameter that skeleton oil blanket 3 was kept away from to oil blanket pressure cap 2, the less one end of oil blanket pressure cap 2 internal diameter is used for with the tappet clearance fit of reciprocating type plunger pump, the internal diameter of the great one end of oil blanket pressure cap 2 internal diameter is greater than the internal diameter of skeleton oil blanket 3, the pressure cap that has on the lateral wall of oil blanket pressure cap 2 leads the oil guide hole 21 of the cap of oilhole 12 intercommunication with first box body, press the great one end of oilhole 2 internal diameters of oil blanket to be located oil blanket pressure cap 21.
The oil seal case 1 in the oil seal assembly is fitted over the tappet 10 and the end of the oil seal case 1 having the inner flange 11 is mounted to the crankcase. The oil seal pressing cap 2 is coaxially arranged at one end of the oil seal box body 1, the framework oil seal 3 is coaxially arranged in the oil seal box body 1 and is located between the oil seal pressing cap 2 and the inner flange 11, the framework oil seal 3 is in sealing fit with the inner wall of the oil seal box body 1, and one end, close to the inner flange 11, of the framework oil seal 3 bears the internal pressure from a crankcase. The internal diameter that the oil blanket presses cap 2 to be close to the one end of skeleton oil blanket 3 is greater than the internal diameter that the oil blanket presses cap 2 to keep away from the one end of skeleton oil blanket 3, and the less one end of oil blanket pressure cap 2 internal diameter can be with the tappet 10 clearance fit of reciprocating plunger pump, and the internal diameter that the great one end of oil blanket pressure cap 2 internal diameter is greater than the internal diameter of skeleton oil blanket 3, makes oil blanket pressure cap 2, oil blanket box body 1 and skeleton oil blanket 3 can enclose into an airtight space. Because the first box body oil guide hole 12 on the side wall of the oil seal box body 1 is communicated with the oil seal pressure cap oil guide hole 21 on the side wall of the oil seal pressure cap 2, which is positioned at the end with larger inner diameter of the oil seal pressure cap 2, the first box body oil guide hole 12 can be communicated with the inside of the crankcase, so that the pressure in the closed space is approximately equal to the internal pressure of the crankcase, thereby balancing the pressures at the two ends of the framework oil seal 3, avoiding the accelerated aging of the framework oil seal 3 due to the unequal pressures at the two ends, reducing the replacement times of the framework oil seal 3 and reducing the maintenance cost.
The internal diameter that the one end that oil blanket pressure cap 2 is close to skeleton oil blanket 3 is greater than the internal diameter that oil blanket pressure cap 2 kept away from the one end of skeleton oil blanket 3, and the internal diameter of the great one end of 2 internal diameters of oil blanket pressure cap is greater than the internal diameter of skeleton oil blanket 3, and the fluid of leaking also can get into the great one end of 2 internal diameters of oil blanket pressure cap and lead oilhole 12 through pressing cap and flow back to the crankcase and carry out secondary cyclic utilization, plays the effect of saving the cost in leading oilhole 21 and first box body. Leaked oil can lubricate the tappet 10 and the framework oil seal 3, and abrasion of the framework oil seal 3 is reduced.
Optionally, the outer wall of the oil seal pressing cap 2 is in threaded fit with the inner wall of the oil seal box body 1, and the external threads of the oil seal pressing cap 2 are distributed at one end of the oil seal pressing cap 2 with a smaller inner diameter.
The external screw thread of the oil seal pressing cap 2 is distributed at one end with smaller inner diameter of the oil seal pressing cap 2, so that the oil seal pressing cap 2 and the oil seal box body 1 can be conveniently connected.
The great one end of 2 internal diameters of oil blanket pressure cap can with the clearance fit of oil blanket box body 1, when oil blanket pressure cap 2 rotates to be connected to on the oil blanket box body 1, be located the great one end of 1 internal diameters of oil blanket box body and lead the oilhole 21 and the oil blanket box body 1 between the great friction can not produce great friction to even press the cap to lead oilhole 21 and the first box body and lead oilhole 12 and not aim at after connecting, the annular clearance 22 between oil blanket pressure cap 2 and the oil blanket box body 1 also can ensure to press cap to lead oilhole 21 and the first box body and lead oilhole 12 intercommunication.
Optionally, the end with the larger inner diameter of the oil seal pressing cap 2 can abut against the framework oil seal 3, a coaxial annular spigot 23 is arranged on the outer wall of the end with the larger inner diameter of the oil seal pressing cap 2, and a sealing ring 4 is clamped between the annular spigot 23 and the framework oil seal 3.
The sealing ring 4 can seal the space between the framework oil seal 3, the outer wall of the oil seal pressing cap 2 and the oil seal box body 1, and engine oil leakage is prevented.
In the case where the oil seal cap 2 has the annular notch 22, the diameter of the annular spigot 23 is smaller than the diameter of the annular notch 22.
Optionally, at least two oil guide holes 21 are equidistantly distributed in the circumferential direction of the oil seal cap 2.
The arrangement of the at least two cap oil guide holes 21 can facilitate the alignment of the cap oil guide holes 21 and the first box oil guide holes 12.
Illustratively, the oil seal assembly may include at least two skeleton oil seals 3, at least two skeleton oil seals 3 are located between the oil seal cap 2 and the inner flange 11, an oil slinger 5 is disposed between adjacent skeleton oil seals 3, an oil slinger oil guide hole 51 is formed in the radial direction of the oil slinger 5, and a second box oil guide hole 13 communicated with the oil slinger oil guide hole 51 is formed in the oil seal box body 1.
Through setting up two at least skeleton oil seals 3, and all be provided with an oil slinger 5 between two adjacent skeleton oil seals 3, oil slinger 5 coaxial coupling is in oil blanket box body 1, when can improve skeleton oil seal 3's sealed effect, guarantees that skeleton oil seal 3 mounted position is comparatively accurate. The radial direction of the oil slinger 5 is provided with an oil slinger oil guide hole 51, the oil seal box body 1 is provided with a second box body oil guide hole 13 communicated with the oil slinger oil guide hole 51, the oil slinger oil guide hole 51 and the second box body oil guide hole 13 are arranged to recover leaked oil, each framework oil seal 3 is guaranteed to work under balanced pressure, and the aging speed of each framework oil seal 3 is reduced.
Alternatively, the slinger 5 may also have two slinger oil guide holes 51 at equal intervals in the circumferential direction. Alignment between the slinger oil guide hole 51 and the second cartridge oil guide hole 13 can be facilitated.
Optionally, one end of the oil seal case body 1 has a flange 14.
The outer wall of the crankcase is provided with a hole for the tappet to extend out, one end of the oil seal box body 1 with the inner flange 11 can be inserted into the crankcase through the hole, the flange 14 can be connected with the outer wall of the crankcase, the oil seal box body 1 is convenient to assemble and disassemble, and the oil seal box body 1 is inserted into the crankcase to enable the first box body oil guide hole 12 to be communicated with the inside of the crankcase.
Fig. 2 is a flowchart of an oil seal assembly installation method provided by an embodiment of the present disclosure, where the oil seal assembly installation method is applied to the oil seal assembly described above, and as shown in fig. 2, the oil seal assembly installation method includes:
s101: the oil seal box body is coaxially sleeved on a tappet rod of the reciprocating plunger pump, the oil seal box body is moved and fixed on a crankcase of the reciprocating plunger pump, and optionally, under the condition that the oil seal box body is provided with a first box body oil guide hole and a second box body oil guide hole, the oil seal box body can be coaxially sleeved on the tappet rod of the reciprocating plunger pump after the smooth condition of the first box body oil guide hole and the second box body oil guide hole is checked.
S102: and sleeving the framework oil seal on the tappet rod and moving the tappet rod into the oil seal box body.
In step S102, a rubber sleeve with an inner diameter smaller than the diameter of the tappet may be coaxially sleeved on one end of the tappet; then the framework oil seal is sleeved on the rubber sleeve and moved into the oil seal box body.
The rubber sleeve with the inner diameter smaller than the diameter of the tappet can completely wrap the sharp part on the tappet, the diameter of the whole rubber sleeve on the tappet can not be excessively increased, the framework oil seal can be mounted on the tappet, the cutting edge of the framework oil seal cannot be damaged, and stable use of the framework oil seal is guaranteed.
Fig. 3 is a schematic view of a use state of the rubber sleeve provided by the embodiment of the present disclosure, and as shown in fig. 3, the rubber sleeve 20 is wrapped on the tappet 10 to completely cover the sharp portion of the tappet.
Optionally, before the framework oil seal sleeve is arranged on the rubber sleeve, lubricating oil can be uniformly coated on the outer wall of the rubber sleeve.
After the rubber sleeve is coated with lubricating oil, the friction between the framework oil seal and the rubber sleeve can be further reduced, and the stable installation of the framework oil seal is ensured.
For example, before the framework oil seal is sleeved on the rubber sleeve, the closing-in spring on the framework oil seal can be removed; then sleeving the framework oil seal on the rubber sleeve; further installing the closing-in spring on the framework oil seal; and moving the framework oil seal into the oil seal box body.
Before the framework oil seal is installed, the closing-in spring on the framework oil seal is taken down, so that the closing-in spring can be prevented from damaging the cutting edge of the framework oil seal, and the stable installation and use of the framework oil seal are guaranteed.
For ease of understanding, the closing spring 31 of the skeleton oil seal 3 is shown in fig. 1.
Optionally, remove the skeleton oil blanket to the oil blanket box body in, can include:
a push cylinder is sleeved outside the tappet rod, and the inner diameter of the push cylinder is larger than the diameter of the tappet rod;
the framework oil seal is pushed into the oil seal box body through the pushing cylinder.
The push cylinder is used for pushing the installation of the on-hook oil seal, so that the stable movement and installation of the framework oil seal can be ensured, and the damage of the framework oil seal is avoided.
Optionally, the inner wall of the pushing cylinder is in clearance fit with the outer wall of the rubber sleeve, and the outer wall of the pushing cylinder is in clearance fit with the inner wall of the oil seal box body.
The pushing cylinder of the type has a good effect of pushing the framework oil seal to be stably installed.
S103: and coaxially sleeving the oil seal pressing cap on the tappet rod and moving the oil seal pressing cap to enable the oil seal pressing cap to be connected to one end of the oil seal box body.
And sleeving an oil seal box body in the oil seal assembly on the tappet rod, and installing one end, provided with an inner flange, of the oil seal box body on the crankcase. The oil seal pressing cap is coaxially arranged at one end of the oil seal box body, the framework oil seal is coaxially arranged in the oil seal box body and is located between the oil seal pressing cap and the inner flange, the framework oil seal is in sealing fit with the inner wall of the oil seal box body, and one end, close to the inner flange, of the framework oil seal bears the internal pressure from the crankcase. The inner diameter of one end, close to the framework oil seal, of the oil seal pressing cap is larger than the inner diameter of one end, far away from the framework oil seal, of the oil seal pressing cap, the end, with the smaller inner diameter, of the oil seal pressing cap can be in clearance fit with a tappet of a reciprocating plunger pump, the inner diameter of the end, with the larger inner diameter, of the oil seal pressing cap is larger than the inner diameter of the framework oil seal, and the oil seal pressing cap, the oil seal box body and the framework oil seal can be enclosed into an enclosed space. Because the first box body oil guide hole in the side wall of the oil seal box body is communicated with the oil guide hole in the end, located at the end with the larger inner diameter, of the oil seal pressing cap on the side wall of the oil seal pressing cap, the first box body oil guide hole can be communicated with the inside of the crankcase, so that the pressure in the closed space is approximately equal to the internal pressure of the crankcase, the pressures at the two ends of the framework oil seal are balanced, accelerated aging of the framework oil seal due to unequal pressures at the two ends is avoided, the replacement times of the framework oil seal are reduced, and the maintenance cost is reduced.
By way of example, the present disclosure herein provides an implementation in which the diameter of the tappet may be 65mm, a rubber sleeve with an inner diameter of 50-60 mm is selected, the type of the framework oil seal is 25 x 65 x 10TC, the inner diameter is 25mm, the outer diameter is 65mm, the width is 10mm, the inner diameter of the push cylinder may be 70mm, and the length may be 60 mm.
The above description is only exemplary of the present disclosure and is not intended to limit the present disclosure, which is to be construed in any way as imposing limitations thereon, such as the appended claims, and all changes and equivalents that fall within the true spirit and scope of the present disclosure.
Claims (10)
1. An oil seal assembly is characterized by comprising an oil seal box body (1), an oil seal pressing cap (2) and a framework oil seal (3), wherein the oil seal box body (1) and the oil seal pressing cap (2) are cylindrical, the framework oil seal (3) is annular,
the oil seal structure is characterized in that the oil seal pressing cap (2) is coaxially connected to one end of the oil seal box body (1), the other end of the oil seal box body (1) is provided with a coaxial inner flange (11), the side wall of the oil seal box body (1) is provided with a first box body oil guide hole (12), the framework oil seal (3) is coaxially installed in the oil seal box body (1) and is positioned between the oil seal pressing cap (2) and the inner flange (11), the framework oil seal (3) is in sealing fit with the inner wall of the oil seal box body (1), the inner diameter of one end, close to the framework oil seal (3), of the oil seal pressing cap (2) is larger than that of one end, far away from the framework oil seal (3), of the oil seal pressing cap (2), the end, smaller in inner diameter, of the oil seal pressing cap (2) is in clearance fit with a tappet of a reciprocating plunger pump, and the inner diameter of the end, larger in inner diameter, of the oil seal pressing cap (2) is larger than that of the framework oil seal pressing cap (3), the side wall of the oil seal pressing cap (2) is provided with a pressing cap oil guide hole (21) communicated with the first box body oil guide hole (12), and the pressing cap oil guide hole (21) is located at the end with the larger inner diameter of the oil seal pressing cap (2).
2. The oil seal assembly according to claim 1, characterized in that the outer wall of the oil seal pressing cap (2) is in threaded fit with the inner wall of the oil seal box body (1), and the external threads of the oil seal pressing cap (2) are distributed at one end of the oil seal pressing cap (2) with smaller inner diameter.
3. The oil seal assembly according to claim 1, wherein the end with the larger inner diameter of the oil seal pressing cap (2) abuts against the framework oil seal (3), the outer wall of the end with the larger inner diameter of the oil seal pressing cap (2) is provided with a coaxial annular spigot (23), and a sealing ring (4) is clamped between the annular spigot (23) and the framework oil seal (3).
4. The oil seal assembly according to any one of claims 1 to 3, characterized in that the oil seal assembly comprises at least two framework oil seals (3), the at least two framework oil seals (3) are respectively positioned between the oil seal pressing cap (2) and the inner flange (11), an oil deflector ring (5) is arranged between the adjacent framework oil seals (3), an oil deflector ring guide oil hole (51) is arranged in the radial direction of the oil deflector ring (5), and a second box body guide oil hole (13) communicated with the oil deflector ring guide oil hole (51) is arranged on the oil seal box body (1).
5. An oil seal assembly according to any one of claims 1 to 3, wherein one end of the oil seal box body (1) is provided with a flange (14).
6. An oil seal assembly mounting method, which is applied to the oil seal assembly according to any one of claims 1 to 5, the oil seal assembly mounting method comprising:
coaxially sleeving the oil seal box body on a tappet of the reciprocating plunger pump, moving the oil seal box body and fixing the oil seal box body on a crankcase of the reciprocating plunger pump;
sleeving the framework oil seal on the tappet rod and moving the tappet rod into the oil seal box body;
and coaxially sleeving the oil seal pressing cap to the tappet rod and moving the oil seal pressing cap to enable the oil seal pressing cap to be connected to one end of the oil seal box body.
7. The oil seal assembly mounting method according to claim 6, wherein the sleeving the framework oil seal on the tappet rod and moving the framework oil seal into the oil seal box body comprises:
one end of the tappet is sleeved with a rubber sleeve with the inner diameter smaller than the diameter of the tappet;
and sleeving the framework oil seal to the rubber sleeve and moving the framework oil seal into the oil seal box body.
8. The method of installing an oil seal assembly according to claim 7, further comprising:
before the framework oil seal sleeve is arranged on the rubber sleeve, lubricating oil is uniformly smeared on the outer wall of the rubber sleeve.
9. The method of installing an oil seal assembly according to claim 7, further comprising:
before the framework oil seal is sleeved on the rubber sleeve, a closing-in spring on the framework oil seal is taken down;
sleeving the framework oil seal on the rubber sleeve;
mounting the closing-in spring to the framework oil seal;
and moving the framework oil seal into the oil seal box body.
10. The method of installing an oil seal assembly according to claim 9, wherein moving the framework oil seal into the oil seal box comprises:
a push cylinder is sleeved outside the tappet, and the inner diameter of the push cylinder is larger than the diameter of the tappet;
the framework oil seal is pushed into the oil seal box body through the pushing cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010072478.0A CN113217629B (en) | 2020-01-21 | 2020-01-21 | Oil seal assembly and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010072478.0A CN113217629B (en) | 2020-01-21 | 2020-01-21 | Oil seal assembly and mounting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113217629A true CN113217629A (en) | 2021-08-06 |
| CN113217629B CN113217629B (en) | 2023-02-10 |
Family
ID=77085251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010072478.0A Active CN113217629B (en) | 2020-01-21 | 2020-01-21 | Oil seal assembly and mounting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113217629B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4009645A (en) * | 1975-11-03 | 1977-03-01 | Gerhart Engineering And Machine Company | Piston pump |
| CN201306271Y (en) * | 2008-11-27 | 2009-09-09 | 苏艳群 | Novel oil retainer assembly for plunger pump |
| CN201843768U (en) * | 2010-07-06 | 2011-05-25 | 中国石油集团渤海石油装备制造有限公司 | Reciprocating type water injection pump oil check head |
| CN202597191U (en) * | 2012-03-27 | 2012-12-12 | 上海阿波罗机械股份有限公司 | Oil baffle disc used for process control system (PCS) recycle pump |
| CN203627194U (en) * | 2013-12-31 | 2014-06-04 | 董芙丽 | Novel pull rod sealing device for reciprocating pump |
| CN204239224U (en) * | 2014-10-31 | 2015-04-01 | 中国石油化工股份有限公司 | A kind of high-pressure plunger oil seal of pull rod assembly |
| CN204553199U (en) * | 2015-04-03 | 2015-08-12 | 濮阳市中信激扬机械制造有限公司 | A kind of plunger pump clack box assembly |
| CN208073737U (en) * | 2018-02-28 | 2018-11-09 | 天津市聚能高压泵有限公司 | High lubricating type plunger pump |
| CN208474093U (en) * | 2018-05-31 | 2019-02-05 | 中国石油天然气股份有限公司 | Tappet oil seal assembly |
| CN208605626U (en) * | 2018-08-26 | 2019-03-15 | 中国石油化工股份有限公司 | A kind of polymer-injecting pump adjustable type Jie's rod seal apparatus |
-
2020
- 2020-01-21 CN CN202010072478.0A patent/CN113217629B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4009645A (en) * | 1975-11-03 | 1977-03-01 | Gerhart Engineering And Machine Company | Piston pump |
| CN201306271Y (en) * | 2008-11-27 | 2009-09-09 | 苏艳群 | Novel oil retainer assembly for plunger pump |
| CN201843768U (en) * | 2010-07-06 | 2011-05-25 | 中国石油集团渤海石油装备制造有限公司 | Reciprocating type water injection pump oil check head |
| CN202597191U (en) * | 2012-03-27 | 2012-12-12 | 上海阿波罗机械股份有限公司 | Oil baffle disc used for process control system (PCS) recycle pump |
| CN203627194U (en) * | 2013-12-31 | 2014-06-04 | 董芙丽 | Novel pull rod sealing device for reciprocating pump |
| CN204239224U (en) * | 2014-10-31 | 2015-04-01 | 中国石油化工股份有限公司 | A kind of high-pressure plunger oil seal of pull rod assembly |
| CN204553199U (en) * | 2015-04-03 | 2015-08-12 | 濮阳市中信激扬机械制造有限公司 | A kind of plunger pump clack box assembly |
| CN208073737U (en) * | 2018-02-28 | 2018-11-09 | 天津市聚能高压泵有限公司 | High lubricating type plunger pump |
| CN208474093U (en) * | 2018-05-31 | 2019-02-05 | 中国石油天然气股份有限公司 | Tappet oil seal assembly |
| CN208605626U (en) * | 2018-08-26 | 2019-03-15 | 中国石油化工股份有限公司 | A kind of polymer-injecting pump adjustable type Jie's rod seal apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113217629B (en) | 2023-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204984854U (en) | Oil pump and relief valve thereof | |
| CN113217629B (en) | Oil seal assembly and mounting method thereof | |
| CN217300872U (en) | High-pressure plunger multiple sealing structure of plunger pump | |
| CN212839295U (en) | Automobile gearbox shell | |
| CN108036044B (en) | Box labyrinth seal leak protection oil device | |
| CN210265854U (en) | Inside and outside dustproof oil blanket structure | |
| CN220870078U (en) | Rotary shaft structure sealing device and engine | |
| CN208268406U (en) | A kind of list lip outside framework oil seal | |
| CN101893094A (en) | Actuator cylinder | |
| CN112192507A (en) | Valve stem oil seal structure convenient to press fitting | |
| CN220646715U (en) | Sealing structure for agricultural machinery gearbox | |
| CN216046793U (en) | Pneumatic lubricating pump and sealing assembly | |
| CN216665885U (en) | Sealing assembly of plunger pump and plunger pump | |
| CN218094240U (en) | Mechanical sealing device | |
| CN108119651B (en) | Externally-mounted combined oil seal | |
| CN217108195U (en) | Oil pump packaging and sealing device | |
| CN213655735U (en) | Prevent mechanical seal subassembly of leakage | |
| CN211852372U (en) | Sealing ring oil cylinder sealing device of internal mixer | |
| CN215521454U (en) | Variable-gap sealing hydraulic cylinder based on lip protection | |
| CN216807654U (en) | Rotary oil feeder with good sealing performance | |
| CN215486323U (en) | Oil inlet structure for fuel tank of gasoline engine | |
| CN220007633U (en) | Mechanical seal mounting tool | |
| CN220910763U (en) | Clamping type expansion device | |
| CN218266584U (en) | High-stability oil cylinder | |
| CN220850738U (en) | Rubber sealing ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |