CN110017273A - Smelt gear pump and the melt machining production line for using the smelt gear pump - Google Patents
Smelt gear pump and the melt machining production line for using the smelt gear pump Download PDFInfo
- Publication number
- CN110017273A CN110017273A CN201910236267.3A CN201910236267A CN110017273A CN 110017273 A CN110017273 A CN 110017273A CN 201910236267 A CN201910236267 A CN 201910236267A CN 110017273 A CN110017273 A CN 110017273A
- Authority
- CN
- China
- Prior art keywords
- return flow
- flow line
- pump
- melt
- gear pump
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/006—Processes utilising sub-atmospheric pressure; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/02—Feed or outlet devices therefor
-
- 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
- F04C15/0088—Lubrication
- F04C15/0092—Control systems for the circulation of the lubricant
-
- 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
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The present invention relates to a kind of smelt gear pump and use the melt machining production line of the smelt gear pump.When the pump assembly of smelt gear pump of the invention is just started to work, return flow line is disconnected using regulating valve, melt is transported in high-pressure outlet by driving gear and driven gear work from low pressure inlet at this time, since the melt pressure at high-pressure outlet is higher, so that melt herein is gradually filled with the axis lubrication section part of return flow line, air at the position is discharged from the gap from sealing position, return flow line is opened by regulating valve again after a period of work, high-pressure outlet is connected to by return flow line with low pressure inlet at this time, melt starts to circulate in return flow line, since the air in return flow line has been discharged for work outlet, the air at sealing position is avoided to be mixed into the melt of return flow line, the vacuum degree of Melt Pump caused by solving the problems, such as therefore is destroyed.
Description
Technical field
The present invention relates to a kind of smelt gear pump and use the melt machining production line of the smelt gear pump.
Background technique
In chemical products production procedure, vacuum reaction kettle is often had, the material in reaction kettle is want to transport out just
Smelt gear pump can be used, conventional smelt gear pump generally uses self-lubricating mode, as Authorization Notice No. is
The Chinese patent literature of CN106438344B discloses a kind of gear pump, which includes the pump housing, driving and driven gear, cunning
Dynamic bearing, pump cover, it is characterised in that: offered on sliding bearing and conveyed hot melt is utilized to be lubricated sliding friction pair
Groove combination structure, groove combination structure corresponds to the sliding of driving and driven gear both ends projecting shaft by being respectively arranged on sliding bearing
Groove A on working face, on end face of the sliding bearing towards pump housing central side and communicated with groove A groove B, be set to and slide
Groove C on end face of the dynamic bearing towards pump cover side, the groove D communicated on sliding bearing outer peripheral surface and with groove C composition,
Groove C is communicated with the gap that pump cover and driving and driven gear both ends stretch out between centers, and groove D is communicated with pump housing inner cavity, groove A and ditch
Slot B is located at the exit side of the pump housing, and groove C and groove D are located at the feed side of the pump housing.This gear pump cooperates shape by multiple grooves
At return flow line, self-lubricating is realized.
But the sealing position of such smelt gear pump cannot seal vacuum, when gear pump is just started to work,
Air in return flow line can be mixed into melt, not only the material in reaction kettle cannot be released in this way, instead can be from gear
Enter air at the sealing position of pump, and then destroy the vacuum environment in reaction kettle, destroys the material in reaction kettle.
Summary of the invention
The present invention provides a kind of smelt gear pump, is easy to be mixed at the sealing position to solve existing smelt gear pump
The problem of air；Meanwhile the present invention also provides a kind of melt machining production lines using above-mentioned smelt gear pump.
Smelt gear pump of the invention adopts the following technical scheme that
Smelt gear pump including the pump assembly with low pressure inlet and high-pressure outlet and is arranged in the pump assembly
Driving gear and driven gear in chamber, the power input shaft of the driving gear are hung to the outside of the pump housing, institute outward
It states and is equipped with return flow line between low pressure inlet and high-pressure outlet, the return flow line has moistens by the axis of the power input shaft
Section is slided, the side of close low pressure inlet is equipped with regulating valve on the return flow line, passes through when smelt gear pump is just started to work
The regulating valve disconnects the return flow line so that melt is full of in axis lubrication section and axis is lubricated the sky in section
Gas is discharged, and the regulating valve is opened after operation setup time is connected to the return flow line.
The regulating valve includes valve rod of the Screw assembly on the pump assembly, and the valve rod, which has, is deep into described return
Head in circulation road to be blocked or be opened and the sealing dress on the operating side on the head, the pump assembly
Equipped with the seal closure on the operating side for being located at the valve rod.
The head of the valve rod is spherical structure, and the return flow line is equipped with to be cooperated for sealing with the spherical structure
Cooperation platform.
The pump assembly is equipped with the threaded hole for installing the valve rod, and the outer end of the threaded hole is equipped with to extension
The sealing station stretched, the seal closure Screw assembly are equipped on the outer end of the threaded hole and seal closure and press with the sealing station
The press platform of cooperation is equipped with gasket seal between the press platform and the sealing station.
The gasket seal is metallic packing.
The pump assembly includes with the pump case for accommodating the inner cavity of the driving gear and driven gear, the pump
The end cap being installed on the power input shaft is installed, the pressure regulator valve is mounted on the end cap on shell.
Melt machining production line of the invention adopts the following technical scheme that
Melt machining production line, it is described molten including vacuum reaction kettle and the smelt gear pump being connected to the vacuum reaction kettle
Body gear pump includes having the pump assembly of low pressure inlet and high-pressure outlet and being arranged in the inner cavity of the pump assembly
Driving gear and driven gear, the power input shaft of the driving gear are hung to the outside of the pump housing, the low pressure outward
Return flow line is equipped between import and high-pressure outlet, the return flow line, which has, lubricates section by the axis of the power input shaft,
It is characterized by: being equipped with regulating valve close to the side of low pressure inlet on the return flow line, just start to work in smelt gear pump
When the return flow line disconnected by the regulating valve so that melt is full of in axis lubrication section and axis is lubricated section
In air discharge, the regulating valve is opened after operation setup time is connected to the return flow line.
The regulating valve includes valve rod of the Screw assembly on the pump assembly, and the valve rod, which has, is deep into described return
Head in circulation road to be blocked or be opened and the sealing dress on the operating side on the head, the pump assembly
Equipped with the seal closure on the operating side for being located at the valve rod.
The head of the valve rod is spherical structure, and the return flow line is equipped with to be cooperated for sealing with the spherical structure
Cooperation platform.
The pump assembly is equipped with the threaded hole for installing the valve rod, and the outer end of the threaded hole is equipped with to extension
The sealing station stretched, the seal closure Screw assembly are equipped on the outer end of the threaded hole and seal closure and press with the sealing station
The press platform of cooperation is equipped with gasket seal between the press platform and the sealing station.
The gasket seal is metallic packing.
The pump assembly includes with the pump case for accommodating the inner cavity of the driving gear and driven gear, the pump
The end cap being installed on the power input shaft is installed, the pressure regulator valve is mounted on the end cap on shell.
The beneficial effects of the present invention are: when the pump assembly of smelt gear pump of the invention is just started to work, using adjusting
Valve disconnects return flow line, and melt is transported in high-pressure outlet by driving gear and driven gear work from low pressure inlet at this time,
Since the melt pressure at high-pressure outlet is higher, so that melt herein is gradually filled with the axis lubrication section part of return flow line, it will
Air at the position is discharged from the gap from sealing position, opens reflux by regulating valve again after a period of work and leads to
Road, high-pressure outlet is connected to by return flow line with low pressure inlet at this time, and melt starts to circulate in return flow line, due to work
The air in return flow line is discharged for outlet, avoids the melt that the air at sealing position is mixed into return flow line
In, the vacuum degree of Melt Pump caused by solving the problems, such as therefore is destroyed.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the smelt gear pump in the embodiment of melt machining production line of the invention；
Fig. 2 is the partial enlarged view at the return flow line position in Fig. 1；
Fig. 3 is the partial enlarged view of the regulating valve in Fig. 1；
In figure: 1, pump case；2, end cap；3, driving gear；4, power input shaft；5, bearing；6, sealing shroud；7, regulating valve；11, low
It is pressed into mouth；12, high-pressure outlet；13, cooperate platform；21, end cap groove；22, threaded hole；23, sealing station；24, platform is pressed；41, axis
Sealing cooperation section；61, sealing ring；71, valve rod；72, seal closure；73, head；74, operating side；101, bearing face runner；
102, brearing bore runner；103, end cap runner；104, pump case runner.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of melt machining production line of the invention, melt machining production line, including vacuum reaction kettle and with it is true
The smelt gear pump of empty reaction kettle connection, the structure of smelt gear pump is as shown in Figure 1 to Figure 3, smelt gear pump, including with low
It is pressed into the pump assembly of mouth 11 and high-pressure outlet 12 and the driving gear being arranged in the inner cavity of pump assembly 3 and driven tooth
Wheel, the power input shaft 4 of driving gear 3 are hung to the outside of the pump housing outward, are equipped between low pressure inlet 11 and high-pressure outlet 12
Return flow line, return flow line, which has, lubricates section by the axis of power input shaft 4, and on return flow line the side of close low pressure inlet 11
Equipped with regulating valve 7, return flow line is disconnected so that melt is full of close by regulating valve 7 when smelt gear pump is just started to work
Axis, which lubricates in section and axis is lubricated to the air in section, to be discharged, and regulating valve 7 is opened after operation setup time is connected to return flow line.
The specific structure of regulating valve 7 can refer to Fig. 3, and regulating valve 7 includes valve rod 71 of the Screw assembly on pump assembly,
Valve rod 71, which has, is deep into return flow line the head 73 to be blocked or be opened and the operating side 74 away from head 73,
The seal closure 72 being equipped on the operating side 74 for being located at valve rod 71 is sealed on pump assembly.The valve rod 71 and the pump housing of regulating valve 7
It being threadedly engaged on component, this spline structure is simple, and can also adjust the size of valve port by valve rod in use, thus
The flow for adjusting return flow line, can adapt to the melt of unlike material.The main function of seal closure 72 be prevent air from
The installed position of valve rod enters in return flow line, improves leakproofness.In use, it needs to operate valve rod
When, it needs first to remove seal closure 72, exposes outside the operating side 74 of valve rod and come, consequently facilitating operation, again will after adjustment
Seal closure 72 is installed in place.
In the present embodiment, the head 73 of valve rod is spherical structure, and return flow line is equipped with for sealing with spherical structure
The cooperation platform 13 of cooperation.Return flow line can be closed by the cooperation of spherical structure and cooperation platform 13, it is close using ball head structure
Envelope property is higher.
In the present embodiment, pump assembly is equipped with the threaded hole 22 for installing valve rod, and the outer end of threaded hole 22 is equipped with
Outwardly extending sealing station 23,72 Screw assembly of seal closure are equipped on the outer end of threaded hole 22 and seal closure and push up with sealing station 23
The press platform 24 of press-fit is pressed and is equipped with gasket seal between platform 24 and sealing station 23, can be avoided additionally using this structure
The mounting structure for processing seal closure makes it borrow the threaded hole 22 of valve rod, in this way reduction processing cost.Specifically, it seals
Gasket is metallic packing, makes to be able to bear high temperature at the sealing station in this way, improves its adaptability.
In the present embodiment, pump assembly includes with the pump case for accommodating the inner cavity of driving gear 3 and driven gear
1, the end cap 2 being installed on power input shaft 4 is installed on pump case 1, pressure regulator valve is mounted on end cap 2.The outside of end cap 2 also
Shaft sealing part is installed, specifically include the sealing shroud 6 being sleeved on axis and be arranged on 6 inner peripheral surface of sealing shroud and with axis
Outer peripheral surface is slidingly sealed the sealing ring 61 of cooperation.Return flow line specifically includes bearing face runner 101, the axis of primary head and the tail connection
Inner hole runner 102, end cap runner 103 and pump case runner 104 are held, wherein bearing face runner 101 is connected to high-pressure outlet 12, pump
Shell runner is connected to low pressure inlet 11, and each runner is formed by the groove being arranged on respective component, specially in bearing face
And groove, the end cap groove 21 in the setting of the end face of end cap and 1 ditch of pump case through the setting of pump case 1 being arranged on inner hole
Slot, wherein pump case groove is through-hole structure, and the exit orifice of the through-hole structure is arranged in along upper in cooperation platform 13.Arrow in figure indicates real
The flow direction of melt in the course of work of border.
When the pump assembly of smelt gear pump of the invention is just started to work, return flow line is disconnected using regulating valve, this
When driving gear 3 and driven gear work melt is transported in high-pressure outlet 12 from low pressure inlet 11, due to high-pressure outlet 12
The melt pressure at place is higher, so that melt herein is gradually filled with the axis lubrication section part of return flow line, by the sky at the position
Gas is discharged from the gap from sealing position, opens return flow line by regulating valve again after a period of work, flows back at this time
High-pressure outlet 12 is connected to by channel with low pressure inlet 11, and melt starts to circulate in return flow line, due to work outlet
Air in return flow line is discharged, the air at sealing position is avoided and is mixed into the melt of return flow line, solve
Therefore the problem of vacuum degree of Melt Pump caused by is destroyed.
The low pressure inlet 11 of the smelt gear pump is connected with vacuum reaction kettle, and high-pressure outlet 12 is connected with rear end pipeline
It connects, there is gasket seal in junction, can prevent air from sucking vacuum reaction kettle is connected out, have shaft seal assembly, melt only
Gap between gear pump shaft can not be eliminated, up to 300 DEG C at a temperature of, majority be capable of the sealing ring 61 of sealing gas not
It is able to satisfy requirement.To solve this problem, the present invention joined a kind of special set in the bearing lubrication of gear pump, return flow line
The pressure-regulating valve of meter, specific work process are as follows: after gear pump startup, a small gangs of material in high-pressure outlet is through bearing friction
After the lubricating channels being arranged on face, low tension outlet is returned to by the reflux groove on gear pump end cap, gear pump case, hole, this
The invention pressure-regulating valve is cleverly arranged in this circuit, by the switching value of gradually control valve, adjusts material
Return flow line size, and then make the pressure rise in return flow line, it forces between flow direction of material gear pump shaft and shaft seal assembly
Gap makes it full of material, and then enters vacuum reaction kettle after reaching barrier air thus suck-back entering in the pump housing.Work as smelt gear pump
The problem of back end line is full of material, and after boost in pressure to sets requirement, the not instead of suck-back air to be solved at this time,
Solve the problems, such as that the hypertonia at shaft seal assembly causes leakage, we will add again by adjusting valve module of voltage regulation at this time
Big regurgitant volume to reduce the pressure at shaft seal assembly, and solves the problems, such as sealing leak, final to stablize the work set at one
Condition.Regulating valve play the role of in this smelt gear pump operational process it is very important, the regulating valve by pressure adjust control,
Material pressure is introduced into gear pump shaft sealing, the reversed air that obstructs enters, and then reaches a perfect condition.
In other embodiments of the invention, regulating valve can also use the valve arrangement of other structures, such as using switch
Valve or ball-valve structure；Can also filler be set between valve rod and end cap to realize the sealing at the position；The head of valve rod
It may be arranged as pyramidal structure；The structure of cooperation platform can also use pyramidal structure；Gasket seal can also use other materials
Matter, such as rubber or nylon material.
The embodiment of smelt gear pump of the invention, the implementation of the smelt gear pump and above-mentioned melt machining production line
The structure of smelt gear pump in example is identical, repeats no more.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. including the pump assembly with low pressure inlet and high-pressure outlet and the pump assembly is arranged in smelt gear pump
Driving gear and driven gear in inner cavity, the power input shaft of the driving gear are hung to the outside of the pump housing outward,
Return flow line is equipped between the low pressure inlet and high-pressure outlet, the return flow line has the axis by the power input shaft
Lubricate section, it is characterised in that: be equipped with regulating valve close to the side of low pressure inlet on the return flow line, just opened in smelt gear pump
By the regulating valve return flow line disconnected when beginning work so that melt is full of in axis lubrication section and by axis
The air discharge in section is lubricated, opening the regulating valve after operation setup time is connected to the return flow line.
2. smelt gear pump according to claim 1, it is characterised in that: the regulating valve includes Screw assembly in the pump
Valve rod on body component, the valve rod, which has, to be deep into the return flow line with the head for being blocked or being opened and back
Operating side from the head, sealing is equipped with the seal closure being located on the operating side of the valve rod on the pump assembly.
3. smelt gear pump according to claim 2, it is characterised in that: the head of the valve rod is spherical structure, described
Return flow line is equipped with for the cooperation platform with spherical structure sealing cooperation.
4. smelt gear pump according to claim 3, it is characterised in that: the pump assembly is equipped with described for installing
The threaded hole of valve rod, the outer end of threaded hole sealing station with outward extension, the seal closure Screw assembly is in the spiral shell
The outer end of pit and seal closure are equipped with the press platform with sealing station press cooperation, the press platform and the sealing station it
Between be equipped with gasket seal.
5. smelt gear pump according to claim 4, it is characterised in that: the gasket seal is metallic packing.
6. smelt gear pump described in any one of -5 according to claim 1, it is characterised in that: the pump assembly includes tool
There is the pump case of the inner cavity for accommodating the driving gear and driven gear, is equipped with that be installed on the power defeated on the pump case
Enter the end cap on axis, the pressure regulator valve is mounted on the end cap.
7. melt machining production line, described including vacuum reaction kettle and the smelt gear pump being connected to the vacuum reaction kettle
Smelt gear pump includes having the pump assembly of low pressure inlet and high-pressure outlet and being arranged in the inner cavity of the pump assembly
Driving gear and driven gear, the power input shaft of the driving gear is hung to the outside of the pump housing outward, described low
It is pressed between mouth and high-pressure outlet and is equipped with return flow line, the return flow line has to be lubricated by the axis of the power input shaft
Section, it is characterised in that: be equipped with regulating valve close to the side of low pressure inlet on the return flow line, just start work in smelt gear pump
The return flow line is disconnected so that melt is full of in axis lubrication section and lubricates axis by the regulating valve when making
Air in section is discharged, and the regulating valve is opened after operation setup time is connected to the return flow line.
8. melt machining production line according to claim 7, it is characterised in that: the regulating valve includes Screw assembly in institute
State the valve rod on pump assembly, the valve rod have be deep into the return flow line head to be blocked or be opened with
And the operating side away from the head, sealing is equipped with the sealing being located on the operating side of the valve rod on the pump assembly
Cover.
9. melt machining production line according to claim 8, it is characterised in that: the head of the valve rod is spherical structure,
The return flow line is equipped with for the cooperation platform with spherical structure sealing cooperation.
10. melt machining production line according to claim 9, it is characterised in that: the pump assembly is equipped with for pacifying
The threaded hole of the valve rod, the outer end of threaded hole sealing station with outward extension are filled, the seal closure Screw assembly exists
The outer end of the threaded hole and seal closure are equipped with the press platform with sealing station press cooperation, the press platform with it is described close
It seals and is equipped with gasket seal between platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236267.3A CN110017273A (en) | 2019-03-27 | 2019-03-27 | Smelt gear pump and the melt machining production line for using the smelt gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236267.3A CN110017273A (en) | 2019-03-27 | 2019-03-27 | Smelt gear pump and the melt machining production line for using the smelt gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110017273A true CN110017273A (en) | 2019-07-16 |
Family
ID=67190076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910236267.3A Pending CN110017273A (en) | 2019-03-27 | 2019-03-27 | Smelt gear pump and the melt machining production line for using the smelt gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110017273A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931839A (en) * | 2021-09-15 | 2022-01-14 | 荣盛石化股份有限公司 | Combined sealing structure of kettle bottom melt discharging gear pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4737087A (en) * | 1984-12-10 | 1988-04-12 | Barmag Ag | Drive shaft seal for gear pump and method |
| CN1053032A (en) * | 1989-12-08 | 1991-07-17 | 埃克森化学专利公司 | Molten polymer is transported to the method and apparatus of an extrusion die |
| JPH09144668A (en) * | 1995-11-27 | 1997-06-03 | Shimadzu Corp | Gear pump |
| EP1855008A1 (en) * | 2006-05-12 | 2007-11-14 | Maag Pump Systems Textron AG | Gear pump |
| CN101265902A (en) * | 2008-04-16 | 2008-09-17 | 大连橡胶塑料机械股份有限公司 | Forced self lubricating system of sliding bearing in large-sized smelt gear pump |
| CN106438344A (en) * | 2016-10-27 | 2017-02-22 | 辽宁瑞德橡塑科技有限公司 | Self-lubricating gear pump for hot melt |
| CN210317738U (en) * | 2019-03-27 | 2020-04-14 | 郑州沃华机械有限公司 | Melt gear pump and melt processing production line using same |
-
2019
- 2019-03-27 CN CN201910236267.3A patent/CN110017273A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4737087A (en) * | 1984-12-10 | 1988-04-12 | Barmag Ag | Drive shaft seal for gear pump and method |
| CN1053032A (en) * | 1989-12-08 | 1991-07-17 | 埃克森化学专利公司 | Molten polymer is transported to the method and apparatus of an extrusion die |
| JPH09144668A (en) * | 1995-11-27 | 1997-06-03 | Shimadzu Corp | Gear pump |
| EP1855008A1 (en) * | 2006-05-12 | 2007-11-14 | Maag Pump Systems Textron AG | Gear pump |
| CN101265902A (en) * | 2008-04-16 | 2008-09-17 | 大连橡胶塑料机械股份有限公司 | Forced self lubricating system of sliding bearing in large-sized smelt gear pump |
| CN106438344A (en) * | 2016-10-27 | 2017-02-22 | 辽宁瑞德橡塑科技有限公司 | Self-lubricating gear pump for hot melt |
| CN210317738U (en) * | 2019-03-27 | 2020-04-14 | 郑州沃华机械有限公司 | Melt gear pump and melt processing production line using same |
Non-Patent Citations (1)
| Title |
|---|
| 中国机动车辆安全鉴定检测中心: "《制冷原理与系统 能量解析》", vol. 1, 西南交通大学出版社, pages: 100 - 101 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931839A (en) * | 2021-09-15 | 2022-01-14 | 荣盛石化股份有限公司 | Combined sealing structure of kettle bottom melt discharging gear pump |
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