CN113289509A - Paper mill pulp pulping equipment and electrical control system thereof - Google Patents

Paper mill pulp pulping equipment and electrical control system thereof Download PDF

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Publication number
CN113289509A
CN113289509A CN202110580098.2A CN202110580098A CN113289509A CN 113289509 A CN113289509 A CN 113289509A CN 202110580098 A CN202110580098 A CN 202110580098A CN 113289509 A CN113289509 A CN 113289509A
Authority
CN
China
Prior art keywords
pulping
plate
tank
driven
paper mill
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
Application number
CN202110580098.2A
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Chinese (zh)
Inventor
许亦南
刘远全
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Bilun Household Paper Industry Co ltd
Original Assignee
Guangdong Bilun Household Paper Industry Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangdong Bilun Household Paper Industry Co ltd filed Critical Guangdong Bilun Household Paper Industry Co ltd
Priority to CN202110580098.2A priority Critical patent/CN113289509A/en
Publication of CN113289509A publication Critical patent/CN113289509A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/10—Maintenance of mixers
    • B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
    • B01F35/1452—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids
    • B01F35/1453—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids by means of jets of fluid, e.g. air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/22—Control or regulation
    • B01F35/221—Control or regulation of operational parameters, e.g. level of material in the mixer, temperature or pressure
    • B01F35/2216—Time, i.e. duration, of at least one parameter during the operation
    • B01F35/22161—Time, i.e. duration, of at least one parameter during the operation duration of the mixing process or parts of it
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/50—Mixing receptacles
    • B01F35/52—Receptacles with two or more compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/47—Mixing of ingredients for making paper pulp, e.g. wood fibres or wood pulp

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Abstract

The invention discloses paper pulp making equipment of a paper mill, which comprises a bottom plate, wherein the top of the bottom plate is fixedly provided with two symmetrically arranged support plates a and b, the support plate a is in shaft connection with a pulp making tank, the other end of the pulp making tank is erected on the support plate b, the inside of the pulp making tank is divided into a primary pulp making cavity and a secondary pulp making cavity by a partition plate driven by a driver electrically connected with a controller, the inner wall of the primary pulp making cavity is provided with a stirrer driven by a motor a, the inside of the secondary pulp making cavity is provided with a cutter driven by the motor b, the top of the pulp making tank is positioned at the primary pulp making cavity and is provided with a feed hopper communicated with the primary pulp making cavity, one end of the pulp making tank positioned at the secondary pulp making cavity is provided with a discharge pipe communicated with the secondary pulp making cavity, the other end of the pulp making tank is provided with a lifting mechanism driven by the controller, and two sides of the pulp making tank are provided with cleaning components, the bottom plate is provided with a timer a and a timer b which are electrically connected with the controller; the invention has convenient operation and uniform pulping.

Description

Paper mill pulp pulping equipment and electrical control system thereof
Technical Field
The invention relates to the technical field of paper making equipment of a paper mill, in particular to paper pulp pulping equipment of the paper mill and an electrical control system thereof.
Background
The paper pulp is a fibrous substance prepared by using plant fibers as raw materials through different processing methods. Mechanical pulp, chemical pulp and chemimechanical pulp can be classified according to the processing method; the fiber raw materials can also be divided into wood pulp, straw pulp, hemp pulp, reed pulp, cane pulp, bamboo pulp, rag pulp and the like according to the used fiber raw materials. And can be divided into refined pulp, bleached pulp, unbleached pulp, high-yield pulp, semi-chemical pulp and the like according to different purities. The existing paper pulp pulping device for the paper mill has the defects of uneven pulping, slow pulping and complex operation, can not realize full-automatic operation and is inconvenient to use.
Therefore, the paper mill pulp pulping equipment and the electrical control system thereof are provided.
Disclosure of Invention
The present invention is directed to overcoming the above problems of the prior art and providing a pulp making apparatus for a paper mill and an electrical control system thereof.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
the paper pulp pulping equipment of the paper mill comprises a bottom plate, wherein the top of the bottom plate is fixedly provided with two symmetrically arranged support plates a and b, the supporting plate a is connected with a pulping tank in an axial mode, the other end of the pulping tank is erected on the supporting plate b, the interior of the pulping tank is divided into a primary pulping cavity and a secondary pulping cavity through a partition plate driven by a driver electrically connected with the controller, the inner wall of the first-stage pulping cavity is provided with a stirrer driven by a motor a, the inner part of the second-stage pulping cavity is provided with a cutter driven by a motor b, the top of pulping tank is located one-level pulping chamber department and is equipped with the feeder hopper rather than being linked together, and the one end department that lies in second grade pulping chamber on the pulping tank is equipped with rather than the discharging pipe that has solenoid valve b that is linked together, and the other end of pulping tank is equipped with the lifting mechanism by controller driven, and the both sides of pulping tank are equipped with the cleaning assembly, install on the bottom plate and be connected with the controller electricity time-recorder a and time-recorder b.
Furthermore, the top of the support plate a is provided with connecting lugs a which are integrally formed with the support plate a, the connecting lugs a are connected with connecting lugs b which are fixed on the pulping tank through connecting shafts, and the top of the support plate b is provided with two guide strips which are integrally formed with the support plate b and are in contact with the two sides of the pulping tank.
Furthermore, the inside of slurrying jar is equipped with rather than integrated into one piece and with baffle matched with arc slot.
Furthermore, the top of baffle is equipped with rather than integrated into one piece's arc connecting strip, the top of arc connecting strip is equipped with rather than integrated into one piece's epitaxial plate.
Further, the driver is including being fixed in the mounting bracket at slurrying tank deck portion, the inside of mounting bracket is equipped with by cylinder a driven and through the driving plate that transfer line and epitaxial plate are connected, the both sides of driving plate be equipped with the mounting bracket on spout matched with slider, the outside cover of transfer line is equipped with one end and is connected the buffer spring that the other end and epitaxial plate are connected with the driving plate.
Furthermore, the lifting mechanism comprises a supporting plate fixed at the bottom of the pulping tank, and an air cylinder b driven by a controller is arranged at the bottom of the supporting plate.
Furthermore, the cleaning assembly comprises a connecting pipe which is connected with the water supply assembly and is provided with a water pump and an electromagnetic valve a, and the connecting pipe is communicated with a plurality of spraying pipes which are fixed at two sides of the pulping tank.
Furthermore, the agitator includes the (mixing) shaft by motor a drive, install a plurality of "T" type puddlers on the (mixing) shaft, evenly be equipped with a plurality of auxiliary rods on the "T" type puddler.
Furthermore, the shears comprise a shearing shaft driven by a motor b, and a plurality of shearing knives are fixedly mounted on the shearing shaft.
The invention also provides an electrical control system of the paper pulp making equipment of the paper mill, wherein the input end of the controller is connected with the output end of the timer a and the output end of the timer b, and the output end of the controller is connected with the input end of the motor a, the input end of the motor b, the input end of the cylinder a, the input end of the cylinder b, the input end of the water pump, the input end of the electromagnetic valve a and the input end of the electromagnetic valve b.
When the automatic pulping machine is used, raw materials are added into the primary pulping cavity from the feeding hopper, the controller controls the stirrer to rotate, when the timer a reaches a preset time, the controller controls the stirrer to stop working, meanwhile, the controller controls the driver to work, the partition plate is driven to move upwards, the controller controls the lifting mechanism to work, the pulping tank is driven to incline, so that slurry in the primary pulping cavity is guided into the secondary pulping cavity, the controller drives the motor b to work, when the timer b reaches the preset time, the controller controls the motor b to stop working, the controller controls the electromagnetic valve b to be opened, the slurry is discharged from the discharge pipe, and when the cleaning is needed, the controller controls the cleaning assembly to flush the inner wall of the slurry tank to achieve the purpose of cleaning.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the pulping tank of the present invention;
FIG. 3 is a schematic view of the diaphragm and actuator of the present invention;
FIG. 4 is a schematic diagram of a portion of the structure of FIG. 3 in accordance with the present invention;
FIG. 5 is a schematic view of the construction of the stirrer in the present invention;
FIG. 6 is a schematic view of the construction of the cutter of the present invention;
fig. 7 is a schematic structural view of the electrical control system of the present invention.
The reference numbers in the figures illustrate: 1-bottom plate, 2-timer a, 3-timer b, 4-support plate a, 5-connecting lug a, 6-connecting shaft, 7-controller, 8-discharging pipe, 9-electromagnetic valve b, 10-pulping tank, 11-motor b, 12-mounting rack, 13-cylinder a, 14-water pump, 15-electromagnetic valve a, 16-connecting pipe, 17-motor a, 18-arc connecting bar, 19-guide bar, 20-supporting plate, 21-cylinder b, 22-support plate b, 23-spray pipe, 24-connecting lug b, 25-feed hopper, 26-primary pulping cavity, 27-arc slot, 28-secondary pulping cavity, 29-driving plate, 30-chute, 31-buffer spring, 32-epitaxial plate, 33-baffle, 34-driving rod, 35-slide block, 36-T-shaped stirring rod, 37-auxiliary rod, 38-shearing shaft, 39-shearing knife and 40-stirring shaft.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 7, the present embodiment provides a paper mill pulp pulping apparatus, comprising a base plate 1, wherein two symmetrically arranged support plates a4 and b22 are fixedly arranged on the top of the base plate 1, a pulping tank 10 is pivotally connected to the support plate a4, the other end of the pulping tank 10 is mounted on the support plate b22, the inside of the pulping tank 10 is divided into a primary pulping chamber 26 and a secondary pulping chamber 28 by a partition 33 driven by a driver electrically connected to a controller 7, an agitator driven by a motor a17 is arranged on the inner wall of the primary pulping chamber 26, a cutter driven by a motor b11 is arranged inside the secondary pulping chamber 28, a feed hopper 25 communicated with the primary pulping chamber 26 is arranged at the top of the pulping tank 10, a discharge pipe 8 with a solenoid valve b9 communicated with the secondary pulping chamber 28 is arranged at one end of the pulping tank 10, and a mechanism driven by the controller 7 is arranged at the other end of the pulping tank 10, cleaning components are arranged on two sides of the pulping tank 10, and a timer a2 and a timer b3 which are electrically connected with the controller 7 are arranged on the bottom plate 1.
Raw materials are added into the primary pulping cavity 26 from the feeding hopper 25, the controller 7 controls the stirrer to rotate, when the timer a2 reaches preset time, the controller 7 controls the stirrer to stop working, meanwhile, the controller 7 controls the driver to work, the partition plate 33 is driven to move upwards, the controller 7 controls the lifting mechanism to work, the pulping tank 10 is driven to incline, so that the pulp in the primary pulping cavity 26 is guided into the secondary pulping cavity 28, the controller 7 drives the motor b11 to work, when the timer b3 reaches preset time, the controller 7 controls the motor b11 to stop working, the controller 7 controls the electromagnetic valve b9 to be opened, the pulp is discharged from the discharging pipe 8, and when the pulp needs to be cleaned, the controller 7 controls the cleaning component to flush the inner wall of the pulp tank 10 to achieve the purpose of cleaning, the operation is convenient, and the pulping is uniform.
Preferably, the two sides of the support plate a4 are provided with connecting lugs a5 which are integrally formed with the support plate at the top, the connecting lugs a5 are connected with connecting lugs b24 which are fixed on the pulping tank 10 through a connecting shaft 6, and the top of the support plate b24 is provided with two guide strips 19 which are integrally formed with the support plate b and contact with the two sides of the pulping tank 10.
When slurry in the primary slurry cavity 26 needs to be guided into the secondary slurry cavity 28, one end of the pulping tank 10 is driven to incline by the lifting mechanism, and the guide strip 19 can play a role in guiding and supporting the pulping tank 10.
Preferably, the inner part of the pulping tank 10 is provided with an arc-shaped slot 27 which is integrally formed with the pulping tank and is matched with the partition plate 33.
The provision of the arcuate slot 27 may serve to limit the spacing of the partition 33.
Preferably, the top of the partition 33 is provided with an arc-shaped connecting strip 18 integrally formed therewith, and the top of the arc-shaped connecting strip 18 is provided with an extending plate 32 integrally formed therewith.
Preferably, the driver is including being fixed in the mounting bracket 12 at pulping tank 10 top, the inside of mounting bracket 12 is equipped with by cylinder a13 driven and the driving plate 29 that is connected with epitaxial plate 32 through transfer line 34, the both sides of driving plate 29 are equipped with the spout 30 matched with slider 35 with on the mounting bracket 12, the outside cover of transfer line 34 is equipped with one end and is connected the buffer spring 31 that the other end is connected with epitaxial plate 32 with driving plate 29.
The cylinder a13 drives the driving plate 29 to move along the sliding slot 30 on the mounting frame 12, the driving rod 34 drives the extension plate 32 to move, and further drives the partition 33 to move, and the buffer spring 31 can play a role in protecting the partition 33.
Preferably, the lifting mechanism comprises a supporting plate 20 fixed at the bottom of the pulping tank 10, and the bottom of the supporting plate 20 is provided with an air cylinder b21 driven by the controller 7.
The controller 7 controls the operation of the cylinder b21, thereby driving one end of the pulping tank 10 to be lifted upward.
Preferably, the cleaning assembly comprises a connecting pipe 16 connected with a water supply assembly and provided with a water pump 14 and an electromagnetic valve a15, and a plurality of spray pipes 23 fixed at two sides of the pulping tank 10 are communicated with the connecting pipe 16.
Preferably, the stirrer comprises a stirring shaft 40 driven by a motor a17, a plurality of T-shaped stirring rods 36 are mounted on the stirring shaft 40, and a plurality of auxiliary rods 37 are uniformly arranged on the T-shaped stirring rods 36.
The controller 7 controls the motor a17 to work, and then drives the stirring shaft 40 to rotate, and the T-shaped stirring rod 36 is matched with the auxiliary rod 37, so that the stirring efficiency is improved.
Preferably, the cutter comprises a cutting shaft 38 driven by a motor b11, and a plurality of cutting blades 39 are fixedly mounted on the cutting shaft 38.
The controller 7 controls the motor b11 to work, so as to drive the shearing shaft 38 to rotate, realize the shearing of the shearing knife 39 on the slurry, improve the uniformity of the slurry and have high pulping efficiency.
The invention also provides an electrical control system of the paper mill pulp pulping equipment, wherein the input end of the controller 7 is connected with the output end of a timer a2 and the output end of a timer b3, the output end of the controller 7 is connected with the input end of a motor a17, the input end of a motor b11, the input end of a cylinder a13, the input end of a cylinder b21, the input end of a water pump 14, the input end of a solenoid valve a15 and the input end of a solenoid valve b9, and the controller controls the operation of the motor a17, the motor b11, the cylinder a13, the cylinder b21, the water pump 14, the solenoid valve 15 and the solenoid valve b9 according to the time set by the timer a2 and the timer b 3.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims (10)

1. Paper mill pulp pulping equipment, including the bottom plate, its characterized in that: the top of the bottom plate is fixedly provided with two symmetrically arranged support plates a and b, the support plate a is connected with a pulping tank, the other end of the pulping tank is erected on the support plate b, the interior of the pulping tank is divided into a primary pulping cavity and a secondary pulping cavity by a partition plate driven by a driver electrically connected with the controller, the inner wall of the first-stage pulping cavity is provided with a stirrer driven by a motor a, the inner part of the second-stage pulping cavity is provided with a cutter driven by a motor b, the top of pulping tank is located one-level pulping chamber department and is equipped with the feeder hopper rather than being linked together, and the one end department that lies in second grade pulping chamber on the pulping tank is equipped with rather than the discharging pipe that has solenoid valve b that is linked together, and the other end of pulping tank is equipped with the lifting mechanism by controller driven, and the both sides of pulping tank are equipped with the cleaning assembly, install on the bottom plate and be connected with the controller electricity time-recorder a and time-recorder b.
2. The paper mill pulp pulping apparatus of claim 1, wherein: the supporting plate comprises a supporting plate a and a supporting plate b, wherein the supporting plate a is provided with a connecting lug a which is integrally formed with the supporting plate a at the top part of the supporting plate a, the connecting lug a is connected with a connecting lug b which is fixed on a pulping tank through a connecting shaft, and the supporting plate b is provided with two guide strips which are integrally formed with the supporting plate b and are contacted with the two sides of the pulping tank.
3. The paper mill pulp pulping apparatus of claim 1, wherein: the inside of slurrying jar is equipped with rather than integrated into one piece and with baffle matched with arc slot.
4. A paper mill pulp pulping apparatus according to claim 3, characterized in that: the top of baffle is equipped with rather than integrated into one piece's arc connecting strip, the top of arc connecting strip is equipped with rather than integrated into one piece's epitaxial plate.
5. The paper mill pulp pulping apparatus of claim 1, wherein: the driver is including being fixed in the mounting bracket at slurrying tank deck portion, the inside of mounting bracket is equipped with by cylinder a driven and through the driving plate that transfer line and epitaxial plate are connected, the both sides of driving plate be equipped with the mounting bracket on spout matched with slider, the outside cover of transfer line is equipped with one end and is connected the buffer spring that the other end and epitaxial plate are connected with the driving plate.
6. The paper mill pulp pulping apparatus of claim 1, wherein: the lifting mechanism comprises a supporting plate fixed at the bottom of the pulping tank, and an air cylinder b driven by a controller is arranged at the bottom of the supporting plate.
7. The paper mill pulp pulping apparatus of claim 1, wherein: the cleaning assembly comprises a connecting pipe which is connected with the water supply assembly and is provided with a water pump and an electromagnetic valve a, and the connecting pipe is communicated with a plurality of spraying pipes which are fixed at two sides of the pulping tank.
8. The paper mill pulp pulping apparatus of claim 1, wherein: the stirrer comprises a stirring shaft driven by a motor a, a plurality of T-shaped stirring rods are mounted on the stirring shaft, and a plurality of auxiliary rods are uniformly arranged on the T-shaped stirring rods.
9. The paper mill pulp pulping apparatus of claim 1, wherein: the shears comprise a shearing shaft driven by a motor b, and a plurality of shearing knives are fixedly mounted on the shearing shaft.
10. An electrical control system for a paper mill pulp and pulp making apparatus according to claims 1-9, characterized by: the input end of the controller is connected with the output end of the timer a and the output end of the timer b, and the output end of the controller is connected with the input end of the motor a, the input end of the motor b, the input end of the cylinder a, the input end of the cylinder b, the input end of the water pump, the input end of the electromagnetic valve a and the input end of the electromagnetic valve b.
CN202110580098.2A 2021-05-26 2021-05-26 Paper mill pulp pulping equipment and electrical control system thereof Pending CN113289509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110580098.2A CN113289509A (en) 2021-05-26 2021-05-26 Paper mill pulp pulping equipment and electrical control system thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110580098.2A CN113289509A (en) 2021-05-26 2021-05-26 Paper mill pulp pulping equipment and electrical control system thereof

Publications (1)

Publication Number Publication Date
CN113289509A true CN113289509A (en) 2021-08-24

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ID=77325233

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110580098.2A Pending CN113289509A (en) 2021-05-26 2021-05-26 Paper mill pulp pulping equipment and electrical control system thereof

Country Status (1)

Country Link
CN (1) CN113289509A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205731035U (en) * 2016-06-17 2016-11-30 长兴同昕炉料有限公司 A double-box mixing device for making refractory bricks

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205731035U (en) * 2016-06-17 2016-11-30 长兴同昕炉料有限公司 A double-box mixing device for making refractory bricks

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Application publication date: 20210824