CN110004758A - Roller spacing adjusting device and double roller wash engine - Google Patents
Roller spacing adjusting device and double roller wash engine Download PDFInfo
- Publication number
- CN110004758A CN110004758A CN201910410800.3A CN201910410800A CN110004758A CN 110004758 A CN110004758 A CN 110004758A CN 201910410800 A CN201910410800 A CN 201910410800A CN 110004758 A CN110004758 A CN 110004758A
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- CN
- China
- Prior art keywords
- roller
- bearing seat
- adjusting device
- rack
- spacing adjusting
- 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.)
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The present invention provides a kind of roller spacing adjusting device and double roller wash engines, are related to roller extruder equipment technical field, and the roller spacing adjusting device includes: rack, driving mechanism, the first roller, the second roller, first bearing seat and second bearing seat；First roller is mounted in the first bearing seat, and second roller is mounted in the second bearing seat；In the first bearing seat and second bearing seat, there is one to be flexibly connected with the rack, another is fixedly connected with the rack, so that the spacing between first roller and the second roller is adjustable；The driving mechanism includes telescoping cylinder and displacement sensor, and one end of the telescoping cylinder is connect with the first bearing seat, and the other end is connect with the second bearing seat, and the telescoping cylinder is for driving the first bearing seat and second bearing seat close or separate；Institute's displacement sensors are fixed on the telescoping cylinder, and the cylinder rod stroke for detecting the telescoping cylinder.
Description
Technical field
The present invention relates to roller extruder equipment technical fields, wash more particularly, to a kind of roller spacing adjusting device and double roller
Pulp grinder.
Background technique
Pulp washing is a key operation in chemical pulping line.It is available that there are many different types of wash engines,
Some in these wash engines are to be washed based on press type and the device including squeezing paper pulp to remove fluid.In squeezing
Afterwards, paper pulp is typically diluted to required concentration.
A kind of press type wash engine of known type sets the cylindrical press roll there are two associated, they are arranged to its rotation
Center is located in the same horizontal plane.The outer surface of each pressure roller is porous, and during operation, by cellulose pulp
It is input to the restricted clearance of such as slot etc between perforated roll surface and limiting member, forms slurry whereby on perforated roll surface
Width.Two pressure roller are arranged to be rotated in the opposite sense, in rotational direction convey corresponding pulp web between pressure roller
It is squeezed in the smallest so-called roll gap or pressure area.
A kind of press type wash engine of known type sets the cylindrical press roll there are two associated, they are arranged to its rotation
Center is located in the same horizontal plane.Slurry carries out moisture squeezing by two adjacent pressure roller, and two pressure roller are divided into fixation
Roller and movable roll are connected on fixing roller bearing block and activity roll bearing seat.
Traditional wash engine can not the roller spacing to expressing process be monitored, this causes slurry during being squeezed
It is difficult to accurately hold its pressure size, when the spacing between two rollers is too small, when the pressure of expressing process is excessive, pressure roller is caused
Damage.
Summary of the invention
The purpose of the present invention is to provide a kind of roller spacing adjusting device and double roller wash engines, to alleviate existing wash
The technical issues of can not carrying out real-time monitoring to the spacing between pressure roller in pulp grinder.
A kind of roller spacing adjusting device provided by the invention, comprising: rack, driving mechanism, the first roller, the second roller,
One bearing block and second bearing seat；First roller is mounted in the first bearing seat, and second roller is mounted on described
On two bearing bracket；
In the first bearing seat and second bearing seat, there is one to be flexibly connected with the rack, another and the machine
Frame is fixedly connected, so that the spacing between first roller and the second roller is adjustable；
The driving mechanism includes telescoping cylinder and displacement sensor, and one end of the telescoping cylinder and the first bearing seat connect
It connects, the other end is connect with the second bearing seat, and the telescoping cylinder is for driving the first bearing seat and second bearing to seat against
It is close or separate；Institute's displacement sensors are fixed on the telescoping cylinder, and the cylinder rod stroke for detecting the telescoping cylinder.
Further, the driving mechanism is hydraulic drive mechanism, and the telescoping cylinder is hydraulic cylinder.
Further, the hydraulic drive mechanism includes hydraulic pump, electromagnetic proportional valve, pressure sensor and controller；
The hydraulic pump is connected by oil pipe with electromagnetic proportional valve, and electromagnetic proportional valve is connected by oil pipe with hydraulic cylinder；Institute
Displacement sensors and the pressure sensor are connect with the controller, and the controller can receive the displacement sensing
The signal of device and pressure sensor feedback；
The controller is connect with the electromagnetic proportional valve, and the controller can control the electromagnetic proportional valve, to adjust
Section inputs the oil pressure of the hydraulic cylinder.
Further, the second bearing seat and the rack are hinged, and the first position-limit mechanism, institute are provided in the rack
The first position-limit mechanism is stated to be located in the swing path of the second bearing seat；
The second bearing seat and first position-limit mechanism have gap, and first position-limit mechanism is described for limiting
The amplitude of fluctuation of second bearing seat.
Further, the position-limit mechanism includes the first limited block and second positioned at the second bearing seat opposite sides
Limited block, is provided with the first limiting section abutted with first limited block in the second bearing seat, and for it is described
The second limiting section that second limited block abuts.
Further, second limited block than first limited block further from the first bearing seat, and described
Two limited blocks are towards contact-making switch is provided on the end face of second limiting section, and the contact-making switch is for controlling the driving
The opening and closing of mechanism.
Further, the first bearing seat and the rack are hinged, and stop mechanism is provided in the rack, described to stop
Retaining device is located in the swing path of the first bearing seat, the stop mechanism for prevent the first bearing seat with it is described
Relative motion occurs for rack.
Further, the stop mechanism includes the first stop block and second positioned at the first bearing seat opposite sides
Stop block, is provided with the first stopper section abutted with first stop block in the first bearing seat, and for it is described
The second stopper section that second stop block abuts.
Further, first stop block than second stop block closer to the second bearing seat, described first
Towards being threaded with lock screw on the end face of first stopper section, the lock screw is used for and described first stop block
Stopper section abuts.
Second aspect, a kind of double roller wash engine provided by the invention, including above-mentioned roller spacing adjusting device.
Roller spacing adjusting device provided by the invention, comprising: rack, driving mechanism, the first roller, the second roller, first axle
Hold seat and second bearing seat；First roller is mounted in the first bearing seat, and second roller is mounted on second axis
It holds on seat, the first roller and the second roller form squeezing gap.In the first bearing seat and second bearing seat, there are one and the machine
Frame is flexibly connected, another is fixedly connected with the rack, so as to so that first bearing seat and between second bearing seat
Apart from adjustable, keep the spacing between first roller and the second roller adjustable, to prevent two rollers from damaging since slurry pressure is excessive
It is bad, to adapt to different production requirements.The driving mechanism includes telescoping cylinder and displacement sensor, one end of the telescoping cylinder with
The first bearing seat connection, the other end are connect with the second bearing seat, and the telescoping cylinder is for driving the first bearing
Seat and second bearing seat are close or separate；Institute's displacement sensors are fixed on the telescoping cylinder, and for detecting described stretch
The cylinder rod stroke of contracting cylinder.Displacement sensor can directly react the stroke of telescoping cylinder cylinder rod, can further obtain the first roller
With the distance between second, then user can go to determine whether to adjust according to the practical spacing between the first roller and the second roller
The whole spacing is avoided with matching subsequent production because spacing between the first roller and the second roller is too small, caused first roller and
The pressure that second roller is subject to is excessive, to reduce the probability of roller spacing adjusting device damage.
A kind of double roller wash engine provided by the invention, including above-mentioned roller spacing adjusting device.Because the double roller is washed
Pulp grinder refers to above-mentioned roller spacing adjusting device, so, also there is the double roller wash engine above-mentioned roller spacing to adjust dress
The advantages of setting.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram of roller spacing adjusting device provided in an embodiment of the present invention；
Fig. 2 is the side view of roller spacing adjusting device provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of the hydraulic drive mechanism of roller spacing adjusting device provided in an embodiment of the present invention；
Fig. 4 is the partial enlarged view of location A in Fig. 2.
Icon: 100- rack；200- hydraulic drive mechanism；The first roller of 310-；The second roller of 320-；410- first bearing seat；
420- second bearing seat；The first limited block of 510-；The second limited block of 520-；The first limiting section of 530-；The second limiting section of 540-；
The first stop block of 610-；The second stop block of 620-；The first stopper section 630-；The second stopper section 640-；700- lock screw.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that described reality
Applying example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
As depicted in figs. 1 and 2, roller spacing adjusting device provided by the invention, in the roller spacing adjusting device, packet
It includes: rack 100, driving mechanism, the first roller 310, the second roller 320, first bearing seat 410 and second bearing seat 420；Described first
Roller 310 is mounted in the first bearing seat 410, and second roller 320 is mounted in the second bearing seat 420, the first roller
310 and second roller 320 formed squeezing gap.In the first bearing seat 410 and second bearing seat 420, there are one and the machine
Frame 100 is flexibly connected, another is fixedly connected with the rack 100, so as to so that first bearing seat 410 and and second bearing
Seat the distance between 420 is adjustable, keeps the spacing between first roller 310 and the second roller 320 adjustable, thus prevent two rollers due to
Slurry pressure is excessive and damages, to adapt to different production requirements.The driving mechanism includes telescoping cylinder and displacement sensor, institute
The one end for stating telescoping cylinder is connect with the first bearing seat 410, and the other end is connect with the second bearing seat 420, described flexible
Cylinder is for driving the first bearing seat 410 and second bearing seat 420 close or separate；Institute's displacement sensors are fixed on institute
It states on telescoping cylinder, and the cylinder rod stroke for detecting the telescoping cylinder.Displacement sensor can directly react telescoping cylinder cylinder rod
Stroke can further obtain the distance between the first roller and second, and then user can be according to the first roller and the second roller
Between practical spacing go to determine whether to adjust the spacing, to match subsequent production, avoid because of the first roller and the second roller
Between spacing it is too small, the pressure that caused first roller and the second roller are subject to is excessive, with reduce roller spacing adjusting device damage
Probability.
The both ends of telescoping cylinder are hinged with first axle bolster and second bearing frame respectively.
Driving mechanism can be hydraulic drive mechanism 200, wherein telescoping cylinder can be hydraulic cylinder.
Hydraulic drive mechanism 200 is servo hydraulic cylinder system: including servo hydraulic cylinder, pipeline, servo-hydraulic station, servo control
System processed realizes driving when roller is swung and position, pressure detecting, by servo-system realize it is accurate automatically control and
It adjusts.
As shown in figure 3,200 another embodiment of hydraulic drive mechanism of the present embodiment, the hydraulic drive mechanism 200
Including hydraulic pump, electromagnetic proportional valve, pressure sensor and controller, controller can use dcs
(Distributed Control System), pressure sensor is located in hydraulic pump.
The hydraulic pump is connected by oil pipe with electromagnetic proportional valve, and electromagnetic proportional valve is connected by oil pipe with hydraulic cylinder, electricity
Magnetic proportioning valve can control hydraulic cylinder.Institute's displacement sensors and the pressure sensor are connect with the controller,
The controller can receive the signal of institute's displacement sensors and pressure sensor feedback；The controller and the electromagnetism ratio
Example valve connection, the controller can control the electromagnetic proportional valve, to adjust the oil pressure for inputting the hydraulic cylinder.
Electromagnetic proportional valve control is implemented by controller, and the adjustment of grade roller gap is realized, and displacement passes
The signal of sensor and pressure sensor is input in controller to form feedback.When the pressure value that pressure sensor detects is super
When crossing threshold value, controller can control proportion magnetic valve, and then control the push rod elongation of hydraulic cylinder, to increase by 310 He of the first roller
The distance between second roller 320, to reduce the pressure that roll surface is subject to.Range sensor be able to detect that again the movement of push rod away from
From to reflect the distance between the first roller 310 and the second roller 320.It can be to by above-mentioned hydraulic drive mechanism 200
The roll surface pressure and distance of one roller 310 and the second roller 320 carry out real time monitoring and on-line control.
Hydraulic drive mechanism 200 goes back overflow valve, and overflow valve is connected in parallel on hydraulic pump both ends, so that system maximum pressure is controlled
System.
Roller spacing adjusting device can also include digital display controller, and digital display controller connect with pressure sensor, can be with
For showing pressure data.
Meanwhile digital display controller can work as pressure with for driving the first roller 310 and the driving motor of the second roller 320 to connect
When the slurry that force snesor detects is more than threshold value to the pressure value of roll surface, digital display controller can also be closed for driving first
The driving motor of roller 310 and the second roller 320 avoids the first roller 310 and the second roller 320 from damaging.
Sending module is also provided in digital display controller, sending module is the prior art.For example, SIM can be passed through
Card, cable or bluetooth etc. are sent information in the terminating machine of staff, implement long-range monitoring.
Roller spacing adjusting device can also include alarm, and the digital display controller connects alarm, and pressure reaches
Limiting alarm point, then alarm starts, to remind staff to repair.
Further, alarm may include Audio Players and warning light, and prompting can be issued in terms of sound, light two
Information.
The first bearing seat 410 is fixedly connected with the rack 100, the second bearing seat 420 and the rack 100
It is flexibly connected.
That is, the first roller 310 is fixing roller in the present embodiment, and the second roller 320 is mobile roller.Fixing roller operation
The rotary motion of itself is only realized in the process；In mobile roller operational process in addition to realizing itself rotary motion, also achieve with
The swing of distance between fixing roller.
The second bearing seat 420 and the rack 100 are hinged, are realized by way of rotation and first axle bolster distance
Adjusting.The first position-limit mechanism is provided in the rack 100, first position-limit mechanism is located at the second bearing seat 420
Swing path on, to limit the full swing range of second bearing frame.The second bearing seat 420 and first position restrainer
Structure has gap, because gap is smaller, gap is not shown in Fig. 2, drives second bearing frame by the driving of hydraulic cylinder
It swings.
Second bearing frame and rack 100 are attached by hinged form, make second bearing frame in an oscillatory manner
It is more laborsaving instead of translation in the prior art, and the mobile flexibility ratio of second bearing frame is improved, to improve the second roller
320 movement speed more efficiently prevents from the damage of roller, meanwhile, promote the squeezing effect to slurry.
Specifically, the position-limit mechanism includes 510 He of the first limited block positioned at 420 opposite sides of second bearing seat
Second limited block 520 is provided with first abutted with first limited block 510 on the two sides of the second bearing seat 420
Limiting section 530, and the second limiting section 540 for being abutted with second limited block 520, to limit second bearing frame
The maximum position to swing.
First limited block 510 and/or second limited block 520 are detachably connected with the rack 100, by tearing open
The mode unloaded, the height of adjustable first limited block 510 and/or the second limited block 520.For example, adjustable first limit
The height of block 510 changes the distance between the first limited block 510 and the first limiting section 530, to increase the pendulum of second bearing frame
Dynamic amplitude.
First limited block 510 and/or second limited block 520 and the rack 100 can be to be bolted.
Second limited block 520 than first limited block 510 further from the first bearing seat 410, and described
Two limited blocks 520 are towards being provided with contact-making switch on the end face of second limiting section 540, that is to say, that when the first roller and
Spacing between two rollers progressively increases to the second limiting section and is pressed on the contact-making switch of the second limited block, and the contact-making switch can be with
The closing for controlling the driving mechanism avoids the first roller and the second roller from excessively opening.
The first bearing seat 410 and the rack 100 are hinged, and stop mechanism is provided in the rack 100, described to stop
Retaining device is located in the swing path of the first bearing seat 410, and the stop mechanism is for preventing the first bearing seat 410
Relative motion occurs with the rack 100.
Stop configurations prevent it that relative motion occurs with rack 100 with first axle bolster by the way of abutting.
Specifically, the stop mechanism includes 610 He of the first stop block positioned at 410 opposite sides of first bearing seat
Second stop block 620 is provided with the first stopper section abutted with first stop block 610 in the first bearing seat 410
630, and the second stopper section 640 for being abutted with second stop block 620.
The structure of first rod and the second roller is identical, and production and the maintenance in later period is facilitated to replace.Similarly, first axle bolster and
The structure of two bearing bracket stands can be identical.
As shown in figure 4, first stop block 610 is than second stop block 620 closer to the second bearing seat
420, first stop block 610 is described towards being threaded with lock screw 700 on the end face of first stopper section 630
Lock screw with first stopper section 630 for abutting.By turn lock screw 700, lock screw 700 can be made to resist
First bearing seat, and then abut the second stopper section with the second stop block, so that first bearing seat be made to fix relative to rack.
A kind of double roller wash engine provided by the invention, including above-mentioned roller spacing adjusting device.Because the double roller is washed
Pulp grinder refers to above-mentioned roller spacing adjusting device, so, also there is the double roller wash engine above-mentioned roller spacing to adjust dress
The advantages of setting.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of roller spacing adjusting device characterized by comprising rack, driving mechanism, the first roller, the second roller, first axle
Hold seat and second bearing seat；First roller is mounted in the first bearing seat, and second roller is mounted on second axis
It holds on seat；
In the first bearing seat and second bearing seat, there is one to be flexibly connected with the rack, another is solid with the rack
Fixed connection, so that the spacing between first roller and the second roller is adjustable；
The driving mechanism includes telescoping cylinder and displacement sensor, and one end of the telescoping cylinder is connect with the first bearing seat,
The other end is connect with the second bearing seat, the telescoping cylinder for drive the first bearing seat and second bearing seat it is close or
Person is separate；Institute's displacement sensors are fixed on the telescoping cylinder, and the cylinder rod stroke for detecting the telescoping cylinder.
2. roller spacing adjusting device according to claim 1, which is characterized in that the driving mechanism is hydraulic driving machine
Structure, the telescoping cylinder are hydraulic cylinder.
3. roller spacing adjusting device according to claim 2, which is characterized in that the hydraulic drive mechanism includes hydraulic
Pump, electromagnetic proportional valve, pressure sensor and controller；
The hydraulic pump is connected by oil pipe with electromagnetic proportional valve, and electromagnetic proportional valve is connected by oil pipe with hydraulic cylinder；Institute's rheme
Displacement sensor and the pressure sensor are connect with the controller, the controller can receive institute's displacement sensors and
The signal of pressure sensor feedback；
The controller is connect with the electromagnetic proportional valve, and the controller can control the electromagnetic proportional valve, defeated to adjust
Enter the oil pressure of the hydraulic cylinder.
4. roller spacing adjusting device according to claim 3, which is characterized in that the second bearing seat and the rack
Hingedly, the first position-limit mechanism is provided in the rack, first position-limit mechanism is located at the swing road of the second bearing seat
On diameter；
The second bearing seat and first position-limit mechanism have gap, and first position-limit mechanism is for limiting described second
The amplitude of fluctuation of bearing block.
5. roller spacing adjusting device according to claim 4, which is characterized in that the position-limit mechanism includes positioned at described
The first limit block and the second limit block of second bearing seat opposite sides, are provided in the second bearing seat and first limit
The first limiting section that position block abuts, and the second limiting section for being abutted with second limited block.
6. roller spacing adjusting device according to claim 5, which is characterized in that second limited block is than described first
Limited block is further from the first bearing seat, and second limited block connects towards being provided on the end face of second limiting section
Touching switch, the contact-making switch are used to control the opening and closing of the driving mechanism.
7. roller spacing adjusting device according to claim 5, which is characterized in that the first bearing seat and the rack
Hingedly, stop mechanism is provided in the rack, the stop mechanism is located in the swing path of the first bearing seat, described
Stop mechanism is for preventing the first bearing seat and the rack that relative motion occurs.
8. roller spacing adjusting device according to claim 7, which is characterized in that the stop mechanism includes positioned at described
The first stop block and the second stop block of first bearing seat opposite sides are provided in the first bearing seat and stop with described first
The first stopper section that block abuts, and the second stopper section for being abutted with second stop block.
9. roller spacing adjusting device according to claim 8, which is characterized in that first stop block is than described second
Stop block is closer to the second bearing seat, and first stop block is towards being threaded on the end face of first stopper section
Lock screw, the lock screw with first stopper section for abutting.
10. a kind of double roller wash engine, which is characterized in that adjust and fill including roller spacing described in any one of claim 1-9
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910410800.3A CN110004758A (en) | 2019-05-15 | 2019-05-15 | Roller spacing adjusting device and double roller wash engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910410800.3A CN110004758A (en) | 2019-05-15 | 2019-05-15 | Roller spacing adjusting device and double roller wash engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110004758A true CN110004758A (en) | 2019-07-12 |
Family
ID=67177295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910410800.3A Withdrawn CN110004758A (en) | 2019-05-15 | 2019-05-15 | Roller spacing adjusting device and double roller wash engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110004758A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960252A (en) * | 2022-06-21 | 2022-08-30 | 汶瑞机械(山东)有限公司 | Line pressure adjusting mechanism for roller of double-roller pulp washer |
| CN116057227A (en) * | 2020-08-10 | 2023-05-02 | 安德里兹公司 | Method and device for sealing control of washing machine |
-
2019
- 2019-05-15 CN CN201910410800.3A patent/CN110004758A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116057227A (en) * | 2020-08-10 | 2023-05-02 | 安德里兹公司 | Method and device for sealing control of washing machine |
| CN114960252A (en) * | 2022-06-21 | 2022-08-30 | 汶瑞机械(山东)有限公司 | Line pressure adjusting mechanism for roller of double-roller pulp washer |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190712 |