CN115045831A - Dynamic temperature-regulating mechanical sealing element of asphalt pump and assembling method thereof - Google Patents
Dynamic temperature-regulating mechanical sealing element of asphalt pump and assembling method thereof Download PDFInfo
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- CN115045831A CN115045831A CN202210717131.6A CN202210717131A CN115045831A CN 115045831 A CN115045831 A CN 115045831A CN 202210717131 A CN202210717131 A CN 202210717131A CN 115045831 A CN115045831 A CN 115045831A
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- ring
- seat
- pump body
- ring seat
- gland
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/003—Sealings for working fluid between radially and axially moving parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/02—Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C2/025—Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents the moving and the stationary member having co-operating elements in spiral form
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses a dynamic temperature-adjusting mechanical sealing element of an asphalt pump and an assembling method thereof, wherein the dynamic temperature-adjusting mechanical sealing element comprises a static ring seat and a movable ring seat, a cooling and heat-preserving space is formed between the static ring seat and the movable ring seat, an elastic transmission element is arranged in the cooling and condensation-preventing space of a rotating shaft of a pump body, the elastic transmission element is used as a compensation element for driving a transmission part to synchronously start with the movable ring seat, the static ring seat comprises a gland and a circular static ring, an extension ring is arranged at the end part of the circular static ring, the movable ring seat is arranged in the circular space surrounded by the extension ring, at least two oil inlets and oil outlets distributed along the diameter of the circular static ring are formed on the side curved surface of the circular static ring, low-temperature oil for cooling is introduced into the oil inlets, and high-temperature oil for heat exchange and temperature rise is discharged from the oil outlets; a cooling and heat-preserving space is formed between the static ring and the dynamic ring, and is used for reducing the high-temperature condition caused by the rotation of the dynamic ring and the rotation between the sealing ring and the rotating shaft of the pump body, so that the metal fatigue phenomenon caused by the high-temperature condition is reduced.
Description
Technical Field
The invention relates to the technical field of sealing elements, in particular to a dynamic temperature-regulating mechanical sealing element of an asphalt pump and an assembling method thereof.
Background
At present, the mechanical sealing device is widely applied to fluid machinery chemical pumps with rotary equipment in industries such as oil refining and chemical engineering. The medium of the sealing device in the asphalt pump is asphalt, and the asphalt pump has strong corrosivity.
Most of the existing mechanical sealing elements are tightly attached to a static ring through a movable ring when a pump body rotating shaft rotates, so that asphalt medium leakage is prevented from damaging other pump body assemblies, but the movable ring rotates synchronously along with the pump body rotating shaft, and the temperature rise of the mechanical sealing element is fast due to the application of the movable ring sealing ring, so that the temperature is very high, and the mechanical sealing element is easily damaged.
Disclosure of Invention
The invention aims to provide a dynamic temperature-regulating mechanical sealing element of an asphalt pump and an assembling method thereof, and aims to solve the technical problems that in the prior art, the temperature of a mechanical sealing element part is quickly increased, the temperature is high, and the mechanical sealing element is easily damaged.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
a dynamic temperature-adjusting mechanical sealing element of an asphalt pump comprises a static ring seat sleeved on a pump body rotating shaft and a movable ring seat synchronously rotating with the pump body rotating shaft, wherein a cooling and heat-preserving space is formed between the static ring seat and the movable ring seat, an elastic transmission element is installed in the cooling and condensation-preventing space of the pump body rotating shaft and is connected with the inner surface of the movable ring seat, the elastic transmission element is used as a compensation element for driving a transmission piece and the movable ring seat to be synchronously started, and the elastic transmission element is used for keeping the movable ring seat to move relatively when the pump body rotating shaft rotates so as to buffer impact;
the static ring seat comprises a gland and a circular static ring, the gland is sleeved outside the rotating shaft of the pump body, the circular static ring is positioned in the gland and fixedly arranged with the gland through bolts, an extension ring is arranged on the surface, facing the moving ring seat, of the circular static ring, the moving ring seat is installed in a circular space surrounded by the extension ring, and the circular static ring, the extension ring and the moving ring seat form a cooling and condensation preventing space;
at least two oil inlets and oil outlets are formed on the side curved surface of the circular static ring, wherein the diameter of the circular static ring is distributed, low-temperature oil used for cooling is introduced into the oil inlets, and the high-temperature oil heated through heat exchange is discharged from the oil outlets.
As a preferred scheme of the invention, a heat insulation gasket is arranged between the outer surface of the gland and the pump body shell, and the heat insulation gasket fixedly connects the gland and the pump body shell through bolts;
adiabatic packing ring corresponds the position of oil inlet and oil drain port is equipped with the fluting, circular quiet ring is in the position of oil inlet and oil drain port all is equipped with the funnel cavity, the funnel cavity passes the fluting of adiabatic packing ring with pump body shell connects, just pump body shell is corresponding the position of oil inlet is equipped with the oil storage chamber, pump body shell is corresponding the position of oil drain port is equipped with backward flow chamber, the oil storage chamber with connect through the check valve between the backward flow chamber, the high temperature oil that the backward flow intracavity heaies up returns to cool off in order to generate low temperature oil in the oil storage chamber, and right the space of preventing condensing of cooling is circulated and is cooled down.
As a preferred scheme of the present invention, electromagnetic valves are respectively disposed in the funnel cavities connected to the oil inlet and the oil outlet, and the electromagnetic valves are used for controlling the on-off of the oil inlet and the oil outlet, so that the electromagnetic valves are closed when the pump body is powered off, and the circular stationary ring, the extension ring, and the moving ring seat form a cooling and condensation preventing space.
As a preferred scheme of the invention, a concave groove is arranged on the side curved surface of the movable ring seat, a sinking groove matched with the movable ring seat is arranged on the opening wall surface of the extension ring, a convex ring positioned in the concave groove is arranged in the sinking groove, first special-shaped sealing rings are sleeved on the outer sides of the sinking groove and the convex ring, and the movable ring seat rotates around the extension ring in a sealing manner through the first special-shaped sealing rings;
the side surface of the first special-shaped sealing ring is fixedly adhered to the wall surface of the opening of the extension ring, and the part, located in the sinking groove, of the first special-shaped sealing ring is in a movable state.
As a preferable aspect of the present invention, the thickness of the extension ring is greater than the thickness of the moving ring seat, the groove width of the sunken groove is greater than the thickness of the moving ring seat, and the width of the protruding ring is smaller than the groove width of the concave groove, so that the moving ring seat can maintain the relative movement in a sealed state on the surface of the extension ring.
As a preferred scheme of the invention, the outer side surfaces of the sinking groove and the protruding ring are provided with an inflatable ring, the upper surface of the inflatable ring is fixedly adhered to the first special-shaped sealing ring, and the lower surface of the inflatable ring is fixedly adhered to the sinking groove and the protruding ring respectively;
extend the ring orientation the surface in space is prevented condensing by the cooling be equipped with the inflation valve that the circle is connected aerifys, oil inlet or oil drain port are equipped with gas-filled pipeline, gas-filled pipeline be used for to aerify in the inflation valve, so that first special-shaped sealing washer all the time with extend the ring and closely laminate, in order to compensate the wearing and tearing volume of first special-shaped sealing washer.
As a preferable scheme of the present invention, the elastic transmission element includes a spring seat fixedly mounted on the rotating shaft of the pump body through a fastening screw, and a plurality of extension springs uniformly arranged on the spring seat, and the other ends of the extension springs are mounted on the surface of the movable ring seat through spring pins;
the spring seat is provided with a through hole at the position where the extension spring is installed, a transmission rod is arranged inside the extension spring, one end of the transmission rod penetrates through the through hole, the other end of the transmission rod is fixedly installed together with the spring pin, and the spring seat drives the movable ring seat and the pump body rotating shaft to synchronously rotate through the transmission rod.
As a preferable scheme of the invention, the circular stationary ring comprises a sealing disc and a cylindrical assembly block which is arranged on a side curved surface of the sealing disc through a fastening bolt, and the cylindrical assembly block is wrapped on the movable ring seat to form a whole;
the surface of sealed dish towards the gland through protruding piece with a temporary whole is constituteed to heavy groove on the gland, just sealed dish orientation the surface of rotating ring seat is equipped with circular recess, the diameter of circular recess with the circular diameter that the transfer line surrounded is the same, just the groove diameter of circular recess with the diameter of transfer line is the same, sealed dish with the gland passes through fastening bolt secondary fixation.
As a preferable aspect of the present invention, the side curved surface of the sealing disk is provided with an O-ring for preventing leakage between the sealing disk and the gland, and the side curved surface of the gland, the side curved surface of the sealing disk, and the side curved surface of the semi-cylindrical assembly block are provided with a plurality of fastening bolts penetrating through the O-ring.
In order to solve the above technical problems, the present invention further provides the following technical solutions: a method for assembling a dynamic temperature-regulating mechanical seal of an asphalt pump comprises the following steps:
step 100, forming a first assembly body by a cylindrical assembly block in a circular static ring and a movable ring seat, installing the movable ring seat of the first assembly body on a pump body rotating shaft, and seating the surface of the movable ring seat on a horizontal table surface to enable the first assembly body and the center of the pump body rotating shaft to be concentrically arranged;
step 200, integrally installing a spring seat in the inner space of the first assembly body, and establishing a synchronous driving relation between the spring seat and the movable ring seat;
step 300, forming a temporary whole by a sealing disc and a gland of a circular static ring, sleeving the sealing disc and the gland on a rotating shaft of the pump body, and moving the sealing disc to the first assembly until the sealing disc is limited by a transmission rod in the spring seat to the maximum moving position;
step 400, a plurality of assembling tools work synchronously to fix a sealing disc and a gland through fastening bolts, wherein the sealing disc and the gland form a secondary fixed whole;
step 500, the sealing disc, the cylindrical assembly block and the gland are distributed in sequence from inside to outside, and the side curved surfaces of the sealing disc, the cylindrical assembly block and the gland are fixedly installed by utilizing fastening bolts, wherein the gland forms a whole which is fixed relative to the rotating shaft of the pump body.
Compared with the prior art, the invention has the following beneficial effects:
the invention ensures the sealing state between the movable ring and the static ring, ensures that a medium cannot leak, and simultaneously forms a cooling and heat-preserving space between the static ring and the movable ring, which is used for reducing the high temperature condition caused by the rotation of the movable ring and the rotation between the sealing ring and the rotating shaft of the pump body, thereby reducing the metal fatigue phenomenon caused by the high temperature condition.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
FIG. 1 is a schematic side sectional view of a seal provided in accordance with an embodiment of the present invention;
fig. 2 is a schematic front structure view of a cooling and heat-preserving space provided by an embodiment of the invention;
fig. 3 is a schematic view of an installation structure of a first profiled sealing ring according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an elastic transmission element according to an embodiment of the present invention;
fig. 5 is a flow chart illustrating a seal assembly sequence according to an embodiment of the present invention.
The reference numerals in the drawings denote the following, respectively:
1-moving ring seat; 2-stationary ring seat; 3-an elastic transmission element; 4-oil inlet; 5-an oil discharge port; 6-insulating gaskets; 7-a funnel cavity; 8-an oil storage cavity; 9-a reflux cavity; 10-an electromagnetic valve; 11-a concave groove; 12-sinking the groove; 13-a raised ring; 14-a first contour seal ring; 15-an inflatable ring; 16-a gas-filled valve;
21-a gland; 22-circular stationary ring; 23-an extension loop;
31-spring seats; 32-extension spring; 33-a spring pin; 34-a transmission rod; 35-perforating;
221-sealing discs; 222-a cylindrical assembly block; 223-circular grooves; 224-O-ring seal.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the invention provides a dynamic temperature-regulating mechanical sealing element of an asphalt pump, wherein a medium of a sealing device in the asphalt pump is asphalt and has strong corrosivity, most of the existing mechanical sealing elements prevent asphalt medium from leaking to damage other pump body components by tightly attaching a movable ring and a static ring when a rotating shaft of a pump body rotates, but the movable ring synchronously rotates along with the rotating shaft of the pump body, and the temperature of the mechanical sealing element is quickly raised and is high due to the application of the movable ring sealing ring, so that the mechanical sealing element is easily damaged.
In order to solve the above problems, the present embodiment ensures the sealing state between the moving ring and the stationary ring, and ensures that the medium does not leak, and a cooling and heat-preserving space is formed between the stationary ring and the moving ring, so as to reduce the high temperature condition caused by the rotation of the moving ring and the rotation between the seal ring and the rotating shaft of the pump body, thereby reducing the metal fatigue phenomenon caused by the high temperature condition.
Mechanical seal in this embodiment specifically establishes the stationary ring seat 2 in the pump body pivot including the cover to and with pump body pivot synchronous revolution's rotating ring seat 1, form cooling heat preservation space between stationary ring seat 2 and the rotating ring seat 1, pump body pivot is installed elastic transmission element 3 in the space is prevented congealing in the cooling, elastic transmission element 3 and the internal surface connection of rotating ring seat 1, elastic transmission element 3 is as the compensation component of drive driving medium and rotating ring seat 1 synchronous start, and elastic transmission element 3 is used for keeping the relative activity with rotating ring seat 1 when pump body pivot rotates in order to cushion the impact.
The stationary ring seat 2 comprises a gland 21 sleeved outside a rotating shaft of the pump body and a circular stationary ring 22 which is arranged inside the gland 21 and is fixedly arranged with the gland 21 through a bolt, the circular stationary ring 22 is provided with an extension ring 23 towards the surface of the movable ring seat 1, the movable ring seat 1 is installed in a circular space surrounded by the extension ring 23, and the circular stationary ring 22, the extension ring 23 and the movable ring seat 1 form a cooling and condensation-preventing space.
At least two oil inlets 4 and oil outlets 5 distributed along the diameter of the circular stationary ring 22 are formed on the side curved surface of the circular stationary ring 22, low-temperature oil used for cooling is introduced into the oil inlets 4, and the high-temperature oil heated through heat exchange is discharged from the oil outlets 5.
As the innovation point of this embodiment, this embodiment forms cooling heat preservation space between stationary ring seat 2 and rotating ring seat 1, carry out the heat exchange through the circulation oil body between cooling heat preservation space, the realization is to stationary ring seat 2, rotating ring seat 1 and the pump body pivot between stationary ring seat 2 and the rotating ring seat 1 cool down, thereby reduce stationary ring seat 2 and the condition that the rotating ring seat 1 is heated and appears the crack, the life and the sealed effect of extension mechanical seal, and the inside pitch that gets into cooling heat preservation space can be discharged from oil drain port 5 with the oil body is synchronous, set up the filterable mode of oil body in pump body outside, come out the filtration of pitch medium, improve the effect that prevents the leakage.
In addition, in order to realize the sealing effect of the existing mechanical sealing element, the movable ring and the static ring are tightly attached by using the elastic element, so that the elastic element is often and directly exposed, and the spring is easily corroded and damaged, thereby the compression-resistant buffering capacity of the movable ring is reduced, and the service life of the sealing element is reduced.
As the optimization of this embodiment, the other effect in space is prevented congealing in cooling down is the heat preservation effect, because solidification takes place easily when pitch cooling down, then takes place to glue with the sealing washer of pitch contact easily and glues glutinous, consequently when the pump body was out of work, this embodiment keeps high temperature oil in space is prevented congealing in cooling down, carries out the heat preservation operation to the pump body pivot on the one hand, avoids pitch to cool off completely to produce and solidifies, on the other hand when the pump body is worked, plays the effect of lubricating in advance to the pump body pivot.
As shown in fig. 1 and 2, a heat insulating gasket 6 is provided between the outer surface of the gland 21 and the pump body casing, and the heat insulating gasket 6 fixedly connects the gland 21 and the pump body casing by bolts.
The position that adiabatic packing ring 6 corresponds oil inlet 4 and oil drain port 5 is equipped with the fluting, circular quiet ring 22 all is equipped with funnel cavity 7 in the position of oil inlet 4 and oil drain port 5, funnel cavity 7 passes the fluting and the pump body shell connection of adiabatic packing ring 6, and pump body shell is equipped with oil storage chamber 8 in the position that corresponds oil inlet 4, pump body shell is equipped with backward flow chamber 9 in the position that corresponds oil drain port 5, be connected through the check valve between oil storage chamber 8 and the backward flow chamber 9, the high temperature oil that heaies up in the backward flow chamber 9 returns to and cools off in the oil storage chamber 8 with the production low temperature oil, and to cooling condensation prevention space and carry out circulation cooling.
The oil body that flows through the circulation in the space is prevented congealing in the cooling cools down, and the high temperature oil that heaies up in the backward flow chamber 9 moves upwards, shifts to oil storage chamber 8 through the check valve, cools down the back at oil storage chamber 8 and gets into the cooling through oil inlet 4 again and prevent congealing in the space, realizes the continuous formula of circulation cooling operation.
The funnel cavity 7 that the oil inlet 4 and the oil drain 5 are connected is internally provided with an electromagnetic valve 10 respectively, and the electromagnetic valve 10 is used for controlling the make-and-break of the oil inlet 4 and the oil drain 5 so that the electromagnetic valve 10 is in a closed state when the pump body is powered off, and the circular stationary ring 22, the extension ring 23 and the movable ring seat 1 form a cooling and condensation-preventing space.
The continuous formula of circulation cooling operation among this embodiment is suspended when the pump body outage, and solenoid valve 10 in the funnel cavity 7 that oil inlet 4 and oil drain 5 are connected this moment closes, and the high temperature oil body in the space is prevented congealing in the cooling remains to reduce the cooling rate of pitch, guarantee the pump body and all can normal rotation in the sealing washer that uses on rotating ring seat 1 and the stationary ring seat 2 when the drive.
Because this embodiment is in order to realize cooling down mechanical seal spare in pump body working process, and realize the heat preservation operation to the sealing member when the pump body stop work, no longer with the rotating ring closely laminating with quiet ring, but form the space of cooling and preventing congealing between quiet ring seat 2 and rotating ring seat 1, consequently in order to guarantee normal sealing work, need guarantee this moment that the contact surface of rotating ring seat 1 and quiet ring seat 2 keeps encapsulated situation.
As shown in fig. 1, a concave groove 11 is formed in the side curved surface of the moving ring base 1, a sinking groove 12 matched with the moving ring base 1 is formed in the opening wall surface of the extension ring 23, a protruding ring 13 located inside the concave groove 11 is arranged in the sinking groove 12, a first special-shaped sealing ring 14 is sleeved on the outer sides of the sinking groove 12 and the protruding ring 13, and the moving ring base 1 rotates around the extension ring 23 in a sealing manner through the first special-shaped sealing ring 14.
The thickness of the extension ring 23 is larger than that of the moving ring seat 1, the groove width of the sinking groove 12 is larger than that of the moving ring seat 1, and the width of the protruding ring 13 is smaller than that of the concave groove 11, so that the moving ring seat 1 can keep relative movement in a sealing state on the surface of the extension ring 23.
In this embodiment, the movable ring seat 1 includes the metal movable ring and sets up the O-ring seal circle in the metal movable ring, and is the same with prior art, and sealed effect has all been guaranteed to O-ring seal circle and first special-shaped seal circle 14, and in order to guarantee the buffer work of movable ring seat 1, movable ring seat 1 can carry out sealed removal along extending ring 23, and concrete realization principle does:
the movable ring seat 1 and the extension ring 23 realize mutual clamping through the bulge loop 13 and the concave groove 11, ensure the stable movement of the movable ring seat 1 along the pump body rotating shaft, because the width of the bulge loop 13 is less than the groove width of the concave groove 11, the range of the linear movement of the movable ring seat 1 on the pump body rotating shaft is as follows: the difference between the groove width of the concave groove 11 and the width of the convex ring 13.
In order to ensure the sealing effect, the difference between the groove width of the sinking groove 12 and the thickness of the moving ring seat 1 is the same as the difference between the groove width of the concave groove 11 and the width of the protruding ring 13, so that the moving ring seat 1 is completely wrapped in the range of the first special-shaped sealing ring 14, and the sealing effect is good.
However, the friction between the rotating ring and the first contour ring 14 is large, which causes the surface of the first contour ring 14 to be worn, and affects the sealing effect, in order to solve the above problems:
as shown in fig. 3, the outer side surfaces of the sinking groove 12 and the protruding ring 13 are provided with an air-filled ring 15, the upper surface of the air-filled ring 15 is fixedly adhered to the first special-shaped sealing ring 14, and the lower surface of the air-filled ring 15 is fixedly adhered to the sinking groove 12 and the protruding ring 13, respectively.
The surface of the extension ring 23 facing the cooling and condensation preventing space is provided with an inflation valve 16 connected with the inflation ring 15, the oil inlet 4 or the oil outlet 5 is provided with an inflation pipeline, and the inflation pipeline is used for inflating the inflation valve 16 so that the first special-shaped sealing ring 14 is always tightly attached to the extension ring 23 to compensate the abrasion loss of the first special-shaped sealing ring 14.
The first special-shaped sealing ring 14 is kept in close contact with the moving ring seat 1 through the inflating ring 15, so that the sealing effect is enhanced, and the abrasion loss of the first special-shaped sealing ring 14 is compensated, in addition, because the side surface of the first special-shaped sealing ring 14 is fixedly adhered to the opening wall surface of the extension ring 23, and the part of the first special-shaped sealing ring 14, which is positioned in the sunken groove 12, is in a movable state, when the moving ring seat 1 is stressed and can move linearly along the rotating shaft of the pump body, the first special-shaped sealing ring 14 can deform under the action of the inflating ring 15, and the gas in the inflating ring 15 can ensure that the moving ring seat 1 always keeps a sealing state with the first special-shaped sealing ring 14, so that the sealing effect is ensured.
As shown in fig. 4, the elastic transmission element 3 integrates the compensation buffer effect of the elastic element with the transmission effect of the torque of the shaft to the rotating ring, the elastic transmission element 3 includes a spring seat 31 fixedly mounted on the rotating shaft of the pump body through a fastening screw, and a plurality of extension springs 32 uniformly arranged on the spring seat 31, and the other ends of the extension springs 32 are mounted on the surface of the rotating ring seat 1 through spring pins 33.
The spring seat 31 is provided with a through hole 33 at a position where the extension spring 32 is installed, a transmission rod 34 is arranged inside the extension spring 32, one end of the transmission rod 34 passes through the through hole 33, the other end of the transmission rod 34 is fixedly installed with the spring pin 33, and the spring seat 31 drives the movable ring seat 1 to synchronously rotate with the rotating shaft of the pump body through the transmission rod 34.
This embodiment installs elastic transmission element 3 in the space is prevented condensing by the cooling, reduces the problem that receives pitch corrosion, when spring holder 31 and pump body pivot synchronous revolution, drives rotating ring seat 1 and pump body pivot synchronous revolution through transfer line 34.
As another innovative point of the present embodiment, the transmission rod 34 can also be used as a reference platform for mounting the stationary ring seat 2, when the gland 21 and the circular stationary ring 22 are mounted, the alignment should be performed after the coupler is aligned, the bolts should be uniformly supported to prevent the end faces of the gland and the stationary ring from deflecting, the fit clearance, i.e., the concentricity, between the gland, the stationary ring and the outer diameter of the rotating shaft of the pump body should be checked, the peripheries should be uniform, i.e., the gland and the stationary ring should be concentrically arranged with the rotating shaft of the pump body, and therefore, in the present embodiment, the transmission rod 34 can be used as a reference fulcrum for mounting the gland 21.
It should be noted that, as shown in fig. 1, since the movable ring seat 1 and the extension ring 23 are locked to each other by the convex ring 13 and the concave groove 11, in the present embodiment, the circular stationary ring 22 includes the sealing plate 221 and the cylindrical assembly block 222 mounted on the curved surface of the sealing plate 221 side by the fastening bolt, and the cylindrical assembly block 222 is wrapped around the movable ring seat 1 to form a whole.
As can be seen from fig. 1 and 4, the surface of the sealing disc 221 facing the gland 21 and the counter sink on the gland 21 form a temporary whole through the convex block, and the surface of the sealing disc 221 facing the moving ring seat 1 is provided with a circular groove 223, the diameter of the circular groove 223 is the same as the diameter of the circle surrounded by the transmission rod 34, the diameter of the circular groove 223 is the same as the diameter of the transmission rod 34, and the sealing disc 221 and the gland 21 are secondarily fixed through the fastening bolt.
The side curved surface of the sealing disk 221 is provided with an O-ring 224, the O-ring 224 is used to prevent leakage between the sealing disk 221 and the gland 21, and the side curved surface of the gland 21, the side curved surface of the sealing disk 221 and the side curved surface of the semi-cylindrical assembly block 222 are provided with a plurality of fastening bolts passing through the O-ring 224.
Namely, when assembling the mechanical sealing element, the first special-shaped sealing ring 14 is arranged at the end of the cylindrical assembling block 222, the cylindrical assembling block 222 and the movable ring seat 1 form a first assembling body, a combined plate is directly generated during production, then the sealing disc 221 and the cylindrical assembling block 222 are fixed through bolts, the installation is convenient, and the sealing effect of the first special-shaped sealing ring 14 is ensured.
The transmission rods 34 are uniformly distributed on the movable ring seat 1, and the transmission rods 34 are used as fulcrums for installing the sealing disc 221, so that the sealing disc 221, the gland 21 and the pump body rotating shaft can be arranged concentrically.
The further sealed dish 221 that is divided into with circular quiet ring 22 split of this embodiment to and install the cylindricality equipment piece 222 at sealed dish 221 side curved surface through fastening bolt, when guaranteeing the whole leakproofness between moving ring seat 1 and the quiet ring seat 2, easy to assemble and production guarantee the sealed effect of the first special-shaped seal ring 14 between moving ring seat 1 and the quiet ring seat 2, guarantee the sealed effect of the sealing washer of moving ring seat 1 itself simultaneously.
Specifically, as shown in fig. 5, the method for assembling the moving ring seat 1 and the stationary ring seat 2 in the dynamic temperature-regulating mechanical seal of the asphalt pump in the present embodiment includes the following steps:
step 100, forming a first assembly body by a cylindrical assembly block in a circular static ring and a movable ring seat, installing the movable ring seat of the first assembly body on a rotating shaft of a pump body, and seating the surface of the movable ring seat on a horizontal table surface to enable the first assembly body and the center of the rotating shaft of the pump body to be concentrically arranged;
step 200, integrally installing the spring seat in the inner space of the first assembly body, and establishing a synchronous driving relation between the spring seat and the movable ring seat;
step 300, forming a temporary whole by the sealing disc and the gland of the circular static ring, sleeving the temporary whole on a rotating shaft of the pump body, and moving the sealing disc to the first assembly until the sealing disc is limited to the maximum moving position by the transmission rod in the spring seat;
step 400, a plurality of assembling tools work synchronously to fix the sealing disc and the gland through fastening bolts, and the sealing disc and the gland form a secondary fixed whole;
and 500, distributing the sealing disc, the cylindrical assembly block and the gland in sequence from inside to outside, fixedly mounting the side curved surfaces of the sealing disc, the cylindrical assembly block and the gland by using fastening bolts, and forming a whole which is fixed relative to a rotating shaft of the pump body by the gland.
It is clear that the assembly of the present embodiment ensures the sealing performance and also ensures the concentric arrangement of the seal plate 221, the gland 21, and the pump body rotation shaft.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (10)
1. The dynamic temperature-adjusting mechanical sealing element of the asphalt pump is characterized by comprising a static ring seat (2) sleeved on a pump body rotating shaft and a moving ring seat (1) synchronously rotating with the pump body rotating shaft, wherein a cooling and heat-insulating space is formed between the static ring seat (2) and the moving ring seat (1), an elastic transmission element (3) is arranged in the cooling and condensation-preventing space of the pump body rotating shaft, the elastic transmission element (3) is connected with the inner surface of the moving ring seat (1), the elastic transmission element (3) is used as a compensation element for driving the transmission member and the moving ring seat (1) to be synchronously started, and the elastic transmission element (3) is used for keeping the moving ring seat (1) relatively movable when the pump body rotating shaft rotates so as to buffer impact;
the static ring seat (2) comprises a gland (21) sleeved outside the rotating shaft of the pump body and a circular static ring (22) which is positioned inside the gland (21) and fixedly arranged with the gland (21) through bolts, an extension ring (23) is arranged on the surface, facing the dynamic ring seat (1), of the circular static ring (22), the dynamic ring seat (1) is installed in a circular space surrounded by the extension ring (23), and the circular static ring (22), the extension ring (23) and the dynamic ring seat (1) form a cooling and condensation preventing space;
be formed with two at least edges on the side curved surface of circular quiet ring (22) oil inlet (4) and oil drain port (5) that circular quiet ring (22) diameter distributes, let in the low temperature oil that is used for the cooling in oil inlet (4), just oil drain port (5) discharge the high temperature oil that the process heat transfer heaies up.
2. The dynamic temperature-regulating mechanical seal of asphalt pump according to claim 1,
a heat insulation gasket (6) is arranged between the outer surface of the gland (21) and the pump body shell, and the gland (21) and the pump body shell are fixedly connected through a bolt by the heat insulation gasket (6);
adiabatic packing ring (6) correspond the position of oil inlet (4) and oil drain port (5) is equipped with the fluting, circular quiet ring (22) is in the position of oil inlet (4) and oil drain port (5) all is equipped with funnel cavity (7), funnel cavity (7) pass the fluting of adiabatic packing ring (6) with pump body shell connects, just pump body shell is corresponding the position of oil inlet (4) is equipped with oil storage chamber (8), pump body shell is corresponding the position of oil drain port (5) is equipped with backward flow chamber (9), oil storage chamber (8) with connect through the check valve between backward flow chamber (9), the high temperature oil that heaies up in backward flow chamber (9) returns to cool off in oil storage chamber (8) in order to generate low temperature oil, and right the cooling prevents condensing the space and carries out cooling in circulation.
3. The dynamic temperature-regulating mechanical seal of asphalt pump according to claim 2,
be equipped with solenoid valve (10) in funnel cavity (7) that oil inlet (4) and oil drain (5) are connected respectively, solenoid valve (10) are used for controlling the break-make of oil inlet (4) and oil drain (5), so that solenoid valve (10) are the closed condition when the pump body outage, circular quiet ring (22), extend ring (23) and rotating ring seat (1) form the cooling and prevent condensing the space.
4. The dynamic temperature-regulating mechanical seal of asphalt pump according to claim 1,
a concave groove (11) is formed in the side curved surface of the movable ring seat (1), a sinking groove (12) matched with the movable ring seat (1) is formed in the opening wall surface of the extension ring (23), a protruding ring (13) located in the concave groove (11) is arranged in the sinking groove (12), first special-shaped sealing rings (14) are sleeved on the outer sides of the sinking groove (12) and the protruding ring (13), and the movable ring seat (1) rotates around the extension ring (23) in a sealing mode through the first special-shaped sealing rings (14);
the side surface of the first special-shaped sealing ring (14) is fixedly adhered to the wall surface of the opening of the extension ring (23), and the part, located in the sinking groove (12), of the first special-shaped sealing ring (14) is in a movable state.
5. The dynamic temperature-regulating mechanical seal of asphalt pump according to claim 4,
the thickness of the extension ring (23) is larger than that of the movable ring seat (1), the groove width of the sinking groove (12) is larger than that of the movable ring seat (1), and the width of the protruding ring (13) is smaller than that of the concave groove (11), so that the movable ring seat (1) can keep relative movement in a sealing state on the surface of the extension ring (23).
6. The dynamic temperature-regulating mechanical seal of asphalt pump according to claim 4,
the outer side surfaces of the sinking groove (12) and the protruding ring (13) are provided with an inflatable ring (15), the upper surface of the inflatable ring (15) is fixedly adhered to the first special-shaped sealing ring (14), and the lower surface of the inflatable ring (15) is fixedly adhered to the sinking groove (12) and the protruding ring (13) respectively;
extend ring (23) orientation the surface in space is prevented condensing by the cooling be equipped with inflation valve (16) that inflation ring (15) are connected, oil inlet (4) or oil drain port (5) are equipped with gas tube, gas tube be used for to inflate in the inflation valve (16), so that first dysmorphism sealing washer (14) all the time with extend ring (23) and closely laminate, in order to compensate the wearing and tearing volume of first dysmorphism sealing washer (14).
7. The dynamic temperature-regulating mechanical seal of asphalt pump according to claim 1,
the elastic transmission element (3) comprises a spring seat (31) fixedly mounted on the rotating shaft of the pump body through a fastening screw, and a plurality of extension springs (32) uniformly arranged on the spring seat (31), and the other ends of the extension springs (32) are mounted on the surface of the movable ring seat (1) through spring pins (33);
the pump is characterized in that a through hole (35) is formed in the position, where the extension spring (32) is installed, of the spring seat (31), a transmission rod (34) is arranged inside the extension spring (32), one end of the transmission rod (34) penetrates through the through hole (35), the other end of the transmission rod (34) and the spring pin (33) are fixedly installed together, and the spring seat (31) drives the movable ring seat (1) and the pump body rotating shaft to synchronously rotate through the transmission rod (34).
8. The dynamic temperature-regulating mechanical seal for asphalt pumps of claim 7,
the circular static ring (22) comprises a sealing disc (221) and a cylindrical assembly block (222) which is arranged on a side curved surface of the sealing disc (221) through a fastening bolt, and the cylindrical assembly block (222) is wrapped on the moving ring seat (1) to form a whole;
seal dish (221) towards the surface of gland (21) through protruding piece with a temporary whole is constituteed to heavy groove on gland (21), just seal dish (221) orientation the surface of rotating ring seat (1) is equipped with circular recess (223), the diameter of circular recess (223) with the circular diameter that transfer line (34) surrounded is the same, just the groove diameter of circular recess (223) with the diameter of transfer line (34) is the same, seal dish (221) with gland (21) is through fastening bolt secondary fixation.
9. The dynamic temperature-regulating mechanical seal of asphalt pump according to claim 8,
the side curved surface of sealed dish (221) is equipped with O shape sealing washer (224), O shape sealing washer (224) are used for preventing sealed dish (221) with leak between gland (21), the side curved surface of gland (21), sealed dish (221) with the side curved surface of half cylindricality equipment piece (222) is equipped with a plurality of fastening bolts that pass O shape sealing washer (224).
10. A method for assembling a dynamic temperature-controlled mechanical seal for asphalt pumps according to claims 7-9, comprising the steps of:
step 100, forming a first assembly body by a cylindrical assembly block in a circular static ring and a movable ring seat, installing the movable ring seat of the first assembly body on a pump body rotating shaft, and seating the surface of the movable ring seat on a horizontal table surface to enable the first assembly body and the center of the pump body rotating shaft to be concentrically arranged;
step 200, integrally installing a spring seat in the inner space of the first assembly body, and establishing a synchronous driving relation between the spring seat and the movable ring seat;
step 300, forming a temporary whole by a sealing disc and a gland of a circular static ring, sleeving the sealing disc and the gland on a rotating shaft of the pump body, and moving the sealing disc to the first assembly until the sealing disc is limited by a transmission rod in the spring seat to the maximum moving position;
step 400, a plurality of assembling tools work synchronously to fix a sealing disc and a gland through fastening bolts, wherein the sealing disc and the gland form a fixed whole;
and 500, fixedly mounting the side curved surfaces of the sealing disc, the cylindrical assembly block and the gland by using fastening bolts, wherein the gland and the pump body form a whole which is fixed relative to the rotating shaft of the pump body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210717131.6A CN115045831B (en) | 2022-06-23 | 2022-06-23 | Dynamic temperature-regulating mechanical sealing element of asphalt pump and assembling method thereof |
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| CN202210717131.6A CN115045831B (en) | 2022-06-23 | 2022-06-23 | Dynamic temperature-regulating mechanical sealing element of asphalt pump and assembling method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2575340Y (en) * | 2002-10-21 | 2003-09-24 | 宜兴市工程塑料设备厂 | Vanes of centrifugal pressure fan and centrifugal pressure fan with the same vanes |
| CN202834067U (en) * | 2012-09-06 | 2013-03-27 | 苏州市东立机械有限公司 | Mechanical seal device |
| CN212054696U (en) * | 2020-04-10 | 2020-12-01 | 中建八局轨道交通建设有限公司 | Sealing device for hinged part of shield tunneling machine |
| CN112253535A (en) * | 2020-10-28 | 2021-01-22 | 芜湖市中天密封件有限公司 | High-temperature screw asphalt pump mechanical sealing element |
| CN216142970U (en) * | 2021-06-29 | 2022-03-29 | 青岛思远化工有限公司 | Mechanical seal cooling device for centrifugal pump |
-
2022
- 2022-06-23 CN CN202210717131.6A patent/CN115045831B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2575340Y (en) * | 2002-10-21 | 2003-09-24 | 宜兴市工程塑料设备厂 | Vanes of centrifugal pressure fan and centrifugal pressure fan with the same vanes |
| CN202834067U (en) * | 2012-09-06 | 2013-03-27 | 苏州市东立机械有限公司 | Mechanical seal device |
| CN212054696U (en) * | 2020-04-10 | 2020-12-01 | 中建八局轨道交通建设有限公司 | Sealing device for hinged part of shield tunneling machine |
| CN112253535A (en) * | 2020-10-28 | 2021-01-22 | 芜湖市中天密封件有限公司 | High-temperature screw asphalt pump mechanical sealing element |
| CN216142970U (en) * | 2021-06-29 | 2022-03-29 | 青岛思远化工有限公司 | Mechanical seal cooling device for centrifugal pump |
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| CN115045831B (en) | 2023-05-26 |
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