CN108591053A - A kind of anti-blocking broken bridge method of sludge screw pump feed inlet - Google Patents
A kind of anti-blocking broken bridge method of sludge screw pump feed inlet Download PDFInfo
- Publication number
- CN108591053A CN108591053A CN201810734936.5A CN201810734936A CN108591053A CN 108591053 A CN108591053 A CN 108591053A CN 201810734936 A CN201810734936 A CN 201810734936A CN 108591053 A CN108591053 A CN 108591053A
- Authority
- CN
- China
- Prior art keywords
- plc controller
- solenoid valve
- feed
- air compressor
- compressor machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/001—Pumps for particular liquids
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- 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
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/005—Removing contaminants, deposits or scale from the pump; Cleaning
-
- 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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/28—Safety arrangements; Monitoring
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides a kind of anti-blocking broken bridge methods of sludge screw pump feed inlet, device involved in this method is by weighing sensor, the pump housing, feed hopper, high pressure nozzle group, communicating pipe, solenoid valve block, air compressor machine, motor, feed inlet, discharge port, PLC controller composition.Utilize the air compressor machine switch and solenoid valve block keying condition based on feed weight of PLC controller setting, when charging in feed hopper reaches the critical condition of feeding weight, PLC controller opens air compressor machine and solenoid valve block, realize the work of high pressure nozzle group, regularly high pressure blow-gas can effectively destroy accumulation and the bridging characteristics of charging, realize anti-blocking broken bridge function, it is ensured that sludge screw pump it is efficiently and smoothly operated.Using the communication port function of PLC controller, the remote monitoring and control to sludge screw rod pump operation is realized.The wear rate for effectively reducing equipment, promotes the stability of operation, simple in structure, and manufacture and operation expense are relatively low, realizes unattended, saves artificial, reduces failure rate, improve production efficiency.
Description
Technical field
The invention belongs to technical field of sewage, a kind of particularly anti-blocking broken bridge side of sludge screw pump feed inlet
Method.
Background technology
In sewage treatment process, the general conveying that dewatered sludge is completed using screw pump.Very due to dewatered sludge viscosity
Greatly, easy to be hardened, agglomerating, therefore usually will appear sludge between hopper and delivery pump connector and make somebody a mere figurehead and can not be successfully into pump
The case where, such situation referred to as " is built bridge ".Moreover, sludge, which sticks on bucket wall, is difficult to smooth downlink, lead to the speed of spoil disposal
Degree does not catch up with sludge feeding speed, and hopper mud position will rise, and hopper is caused to block.Simultaneously as sludge feed quantity is less, it is insufficient
To fill the gap between rotor, dry wear is also resulted in, causes rotor serious wear.Due to existing sludge spiral shell
The existing above structure defect of bar pump, influences the operational efficiency of equipment, increases the cost manually dredged and time.The abrasion of equipment
Cause failure rate higher, increases O＆M cost, also constrain the structure of " unattended plant area ".
The Chinese patent that number of patent application is 201520154550.9 discloses " a kind of broken bridge processing unit of dewatered sludge ",
Two groups of drive shafts are installed with the shaft for two driving motors being arranged outside feed hopper to couple in feed hopper, in feed hopper
Multi-disc stirring blade is installed interlacedly in two groups of drive shafts, the work(of anti-blocking broken bridge is realized using stirring blade Stirring
Energy.The device plays the role of brokenly bridge to a certain extent, but is difficult to thoroughly solve feed inlet blocking and rotor abrasion
Problem.And it is complicated, manufacture and operation expense are higher, cannot solve sludge feed quantity and screw rod pump duty one
Sex chromosome mosaicism is caused, sludge screw pump is still often in dry operating status.
Invention content
The object of the present invention is to provide a kind of anti-blocking broken bridge method of sludge screw pump feed inlet, involved in this method
Device be by weighing sensor, the pump housing, feed hopper, high pressure nozzle group, communicating pipe, solenoid valve block, air compressor machine, motor, feed inlet,
Discharge port, PLC controller composition acquire charging feed quantity data by the weighing sensor being set on the pump housing, utilize in real time
The air compressor machine switch based on weight and solenoid valve block of PLC controller setting open and close condition, according to feeding weight to air compressor machine and
Solenoid valve block sends out keying instruction.When the charging in feed hopper reaches the critical condition of feeding weight, PLC controller is opened empty
Press and solenoid valve block realize that the work of high pressure nozzle group, high pressure blow-gas can effectively destroy accumulation and the bridging characteristics of charging.In height
Press nozzle sets anti-blocking broken bridge function under the action of, it is ensured that sludge screw pump it is efficiently and smoothly operated.Meanwhile utilizing controller
The communication port function of PLC, realizes the remote monitoring and control to sludge screw rod pump operation.
Present invention efficiently solves sludge screw pump feeding rack bridge blinding plug problems, realize anti-blocking broken bridge function, reduce
The wear rate of equipment, the stability and the robustness to feeding humidity for enhancing sludge screw rod pump operation.It is simple in structure, manufacture
It is relatively low with operation expense, realize it is unattended, by save manually and reduce failure rate improve production efficiency.
The anti-blocking broken bridge method of a kind of sludge screw pump feed inlet of the present invention, the device involved in this method is by claiming
Retransmit sensor, the pump housing, feed hopper, high pressure nozzle group, communicating pipe, solenoid valve block, air compressor machine, motor, feed inlet, discharge port, PLC
Controller forms, and weighing sensor (1) is set to the bottom of the pump housing (2), several are provided in feed hopper (3) for destroying
Feed the high pressure nozzle group (4) of accumulation characteristic, sky of the high pressure nozzle group (4) by communicating pipe (5) with setting in feed hopper (3) outside
Press (7) is connected to, and solenoid valve block (6) is provided on communicating pipe (5)；The data input pin of PLC controller by data line with
Weighing sensor (1) connects, and the control terminal of PLC controller passes through the control line switch and solenoid valve block with air compressor machine (7) respectively
(6) control terminal connection；The communication port of PLC controller transfers data to remote back-office by wired or wireless communication modes
Monitoring system；
Concrete operations follow these steps to carry out：
A, according to the experimental data of accumulation and practical operation experience, charging feed quantity and sludge screw pump sludge volume are established most
Good Relation Parameters model sets PLC controller or adjusts air compressor machine 7 and electricity based on feed weight according to relevant parameter model
The keying condition of magnet valve group 6；
B, PLC controller carries out initialization inspection to weighing sensor (1), solenoid valve block (6), air compressor machine (7) and motor (8)
It surveys, it is ensured that each equipment is in normal condition；
C, weighing sensor (1) acquires the inlet amount data of sludge screw pump feed hopper (3) and is transmitted to PLC controls in real time
Device；
D, when the feed weight of feed hopper (3) is no more than the critical condition of setting, sludge screw pump keeps conventional operation shape
State；
E, when the feed weight of feed hopper (3) is more than the critical condition of setting, PLC controller starts solenoid valve block (6)
It is opened with the switch of air compressor machine (7), high pressure nozzle group (4) work；
F, when the feed weight of feed hopper (3) returns under the critical condition of setting, PLC controller is to solenoid valve block
(6) and air compressor machine (7) sends out out code, and high pressure nozzle group 4 is stopped, and sludge screw pump returns to normal operating conditions d；
G, real time data by the communication port synchronous transfer of PLC controller to remote back-office monitoring system, to sludge spiral shell
Remote monitoring and control is implemented in the operation of bar pump.
Description of the drawings
Fig. 1 is operational process schematic diagram of the present invention；
Fig. 2 is apparatus of the present invention structural schematic diagram.
Legend：1, weighing sensor, 2, the pump housing, 3, feed hopper, 4, high pressure nozzle group, 5, communicating pipe, 6, solenoid valve block, 7,
Air compressor machine, 8, motor, 9, feed inlet, 10, discharge port, PLC controller.
Specific implementation mode
Embodiment is further described and provided below in conjunction with width figure, and the present invention is not limited by following embodiments, can basis
Technical scheme of the present invention determines specific embodiment with actual conditions.
Embodiment
The anti-blocking broken bridge method of a kind of sludge screw pump feed inlet of the present invention, the device involved in this method is by claiming
Retransmit sensor, the pump housing, feed hopper, high pressure nozzle group, communicating pipe, solenoid valve block, air compressor machine, motor, feed inlet, discharge port, PLC
Controller forms, and weighing sensor 1 is set to the bottom of the pump housing 2, be provided in feed hopper 3 several for destroy charging accumulate
The high pressure nozzle group 4 of poly- characteristic, high pressure nozzle group 4 are connect by communicating pipe 5 with the air compressor machine 7 being arranged outside feed hopper 3, even
Solenoid valve block 6 is provided on siphunculus 5；The data input pin of PLC controller is connect by data line with weighing sensor 1, PLC controls
The control terminal of device processed is connect with the control terminal of the switch of air compressor machine 7 and solenoid valve block 6 respectively by control line；PLC controller
Communication port transmits data to remote back-office monitoring system by wired or wireless communication modes；
As shown in Figure 1, concrete operations follow these steps to carry out：
A, according to the experimental data of accumulation and practical operation experience, charging feed quantity and sludge screw pump sludge volume are established most
Good Relation Parameters model sets PLC controller or adjusts air compressor machine 7 and electricity based on feed weight according to relevant parameter model
The keying condition of magnet valve group 6；
B, PLC controller carries out initialization detection to weighing sensor 1, solenoid valve block 6, air compressor machine 7 and motor 8, it is ensured that
Each equipment starts after being in normal condition；
C, weighing sensor 1 acquires the inlet amount data of sludge screw pump feed hopper 3 and in real time by having 8 acquisition essences
Degree AI modules are transmitted to PLC controller；
D, when the feed weight of feed hopper 3 is no more than the critical condition of setting, sludge screw pump keeps normal operating conditions；
E, (preferably it is set as when the feed weight of feed hopper 3 is more than the critical condition of setting：Weight is more than
120kg), PLC controller electromagnetic valve of instruction group 6 and air compressor machine 7 are opened, and the work of high pressure nozzle group 4 (should keep at nozzle pressure not
Less than 0.8Mpa)；
F, when the feed weight of feed hopper 3 returns under the critical condition of setting, PLC controller is to 6 He of solenoid valve block
Air compressor machine 7 sends out out code, and high pressure nozzle group 4 is stopped, and sludge screw pump returns to normal operating conditions d；
G, real time data is controlled by the communication port synchronous transfer of PLC controller to remote back-office monitoring system using PLC
Device processed carries ethernet port, is carried out data transmission using Modbus-TCP agreements, realizes that the operation to sludge screw pump is implemented
Remote monitoring and control；
As shown in Fig. 2, the device involved in this method is by having installed weighing and sensing additional on traditional sludge screw pump
Device 1, high pressure nozzle group 4, solenoid valve block 6, air compressor machine 7 and controller PLC, so as to realizing the anti-blocking broken bridge function of feed inlet.PLC
Controller is the core component of this method, data monitoring analysis and the operation control of whole system is assumed responsibility for, according to accumulation
Experimental data and practical operation experience make the related ginseng of the keying condition of 6 air compressor machine 7 of solenoid valve block based on feed weight
Number, and by the relative parameters setting to PLC controller of formulation, weighing sensor 1 is mounted on the bottom of 2 supporting rack of the pump housing, uses
In the data of acquisition weight change in real time, the data input pin of controller PLC, acquisition charging feed quantity are connected to by data line
Data are simultaneously sent to PLC controller in real time, and the weight sensor that minimum resolution is 5kg may be selected in weighing sensor 1, to ensure
The installation number of the stability and accuracy of data, weighing sensor 1 is at least 4, and high pressure nozzle group 4 is fixed on feed hopper 3
Madial wall on, be communicated to the air compressor machine 7 being fixed on outside feed hopper 3 using communicating pipe 5, the preferably flat mouth spray of high pressure nozzle group 4
Mouth, nozzle is downward when installation, and towards the direction of feed inlet 9, installation number is at least 4 or more and (ensures per the interior of face feed hopper 3
One is at least installed on side wall), it is obtained with this and preferably destroys charging buildup effects；Between high pressure nozzle 4 and air compressor machine 7
The solenoid valve block 6 of relevant parameter is installed, air can be selected communicating pipe 5 in the keying for controlling high pressure nozzle group 4 on communicating pipe 5
Hose, air compressor machine 7 are fixed on the pump housing 2, or the side of the pump housing 2 is fixed in selection, and the preferably institute of air compressor machine 7 is for pressure
The air compressor machine of 0.8Mpa；
The control terminal of PLC controller is connected to the control of the switch and solenoid valve block 6 of air compressor machine 7 by control line respectively
End, meanwhile, the communication port of PLC controller is connected to remote back-office monitoring system by wired or wireless way, can will be live
Operation data is real-time transmitted to remote back-office monitoring system, realizes to the remote monitoring and control of sludge screw rod pump operation, reaches
Unattended target；
The relevant manufacturers and parameter information of the present embodiment selected components are referring to table 1：
The relevant manufacturers and parameter information of 1 the present embodiment selected components of table
| Title | Model or parameter, manufacturer's information |
| Controller PLC | Schneider Twido series TWDLCAE40DRF |
| Weighing sensor 1 | Plum Teller-support benefit SWB505 MultiMount, resolution ratio 5kg exports 4-20mA |
| High pressure nozzle group 4 | Stainless steel material, jet hole 4cm*0.4cm |
| Solenoid valve block 6 | 220V, actuation time 0.05s |
| Air compressor machine 7 | Operating pressure 0-2Mpa 220V |
In sludge screw rod pump operation, when the feed weight of feed hopper 3 is no more than the critical condition of setting, sludge screw pump
Keep normal operating conditions；When charging in feed hopper 3 reaches the critical condition of weight, PLC controller opens 7 He of air compressor machine
Solenoid valve block 6 realizes that high pressure nozzle group 4 works, and regularly high pressure blow-gas can effectively destroy the accumulation of charging to high pressure nozzle group 4
And bridging characteristics, realize choke preventing function；When critical condition of the charging less than weight, PLC controller is to air compressor machine 7 and solenoid valve
Group 6 sends out out code, and high pressure nozzle group 4 is stopped, and sludge screw pump restores normal operating conditions；When charging reaches again
When the critical condition of weight, PLC controller opens air compressor machine 7 and solenoid valve block 6 once again, and high pressure nozzle group 4 is made to enter work shape
State；Such circular flow, it can be ensured that sludge screw rod pump operation remains at state that is efficient and stablizing.Meanwhile utilizing PLC
The communication port function of controller, realizes the remote monitoring and control to sludge screw rod pump operation；
Referring to table 2：Using a kind of anti-blocking broken bridge method of sludge screw pump feed inlet of the present invention to Urumqi City's north of the city
Sludge screw pump (the resistance to board of speeding that regeneration water factory now runs：Flow 2.0-5.03m3/ h, pumped (conveying) medium sliding velocity 1.2m/s) (table
" before transformation " in 2) technological improvement (" after transformation " in table 2) has been carried out, and carried out production run in 6 months；With tradition
Sludge screw pump compare, reducing the wear rate of rotor and in terms of preventing feed inlet blocking, utilize the improved dirt of this method
Mud screw pump all achieves effect outstanding, significantly reduces cost of labor, it is ensured that the even running of sludge screw pump improves
Production efficiency, while creating good condition to build unattended plant area；
Table 2 2018 year first half of the year Urumqi City's north of the city regenerates waterworks sludge screw pump operating parameter contrast table
Note：Average running frequency data are 2017.12.29-2018.6.6, and rotor replaces number according to average before transformation
Every three months replacement once show that feed inlet blocks number and once obtained according to average block weekly before transformation.
The above technical characteristic constitutes highly preferred embodiment of the present invention, is imitated with stronger adaptability and best implementation
Fruit can increase and decrease inessential technical characteristic according to actual needs, to meet the needs of different situations.
Claims (1)
1. a kind of anti-blocking broken bridge method of sludge screw pump feed inlet, it is characterised in that the device involved in this method is passed by weighing
Sensor, the pump housing, feed hopper, high pressure nozzle group, communicating pipe, solenoid valve block, air compressor machine, motor, feed inlet, discharge port, PLC controls
Device forms, weighing sensor（1）It is set to the pump housing（2）Bottom, in feed hopper（3）Inside be provided with several for destroy charging
The high pressure nozzle group of accumulation characteristic（4）, high pressure nozzle group（4）Pass through communicating pipe（5）With setting in feed hopper（3）Outer air compressor machine
（7）Connection, in communicating pipe（5）On be provided with solenoid valve block（6）；The data input pin of PLC controller by data line with weigh
Sensor（1）Connection, the control terminal of PLC controller by control line respectively with air compressor machine（7）Switch and solenoid valve block（6）'s
Control terminal connects；The communication port of PLC controller transfers data to remote back-office monitoring by wired or wireless communication modes
System；Concrete operations follow these steps to carry out：
A, it according to the experimental data of accumulation and practical operation experience, establishes charging feed quantity and is most preferably closed with sludge screw pump sludge volume
It is parameter model, sets or adjust air compressor machine 7 and solenoid valve based on feed weight to PLC controller according to relevant parameter model
The keying condition of group 6；
B, PLC controller is to weighing sensor（1）, solenoid valve block（6）, air compressor machine（7）And motor（8）Initialization detection is carried out,
Ensure to start after each equipment is in normal condition；
C, weighing sensor（1）Acquisition sludge screw pump feed hopper in real time（3）Inlet amount data and be transmitted to PLC controller；
D, feed hopper（3）Feed weight be no more than setting critical condition when, sludge screw pump keep normal operating conditions；
E, work as feed hopper（3）Feed weight be more than setting critical condition when, PLC controller start solenoid valve block（6）And sky
Press（7）Switch open, high pressure nozzle group（4）Work；
F, work as feed hopper（3）Feed weight when returning under the critical condition of setting, PLC controller is to solenoid valve block（6）With
Air compressor machine（7）Out code is sent out, high pressure nozzle group 4 is stopped, and sludge screw pump returns to normal operating conditions d；
G, real time data by the communication port synchronous transfer of PLC controller to remote back-office monitoring system, to sludge screw pump
Operation implement remote monitoring and control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810734936.5A CN108591053B (en) | 2018-07-06 | 2018-07-06 | Anti-blocking bridge-breaking method for feed inlet of sludge screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810734936.5A CN108591053B (en) | 2018-07-06 | 2018-07-06 | Anti-blocking bridge-breaking method for feed inlet of sludge screw pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108591053A true CN108591053A (en) | 2018-09-28 |
| CN108591053B CN108591053B (en) | 2023-09-26 |
Family
ID=63617538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810734936.5A Active CN108591053B (en) | 2018-07-06 | 2018-07-06 | Anti-blocking bridge-breaking method for feed inlet of sludge screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108591053B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0636560A1 (en) * | 1993-07-30 | 1995-02-01 | Ibau Hamburg Ingenieurgesellschaft Industriebau Mbh | Auger pump with guide grating for continuously conveying granulate or pulverulent flowable material |
| JPH11315791A (en) * | 1998-04-28 | 1999-11-16 | Katsuhiro Iguchi | Viscous fluid screw pump and operation control method therefor |
| US6491501B1 (en) * | 2000-09-01 | 2002-12-10 | Moyno, Inc. | Progressing cavity pump system for transporting high-solids, high-viscosity, dewatered materials |
| CN201351604Y (en) * | 2009-02-09 | 2009-11-25 | 天津机电进出口有限公司 | Screw feeding device |
| CN106401944A (en) * | 2016-11-03 | 2017-02-15 | 福建金闽再造烟叶发展有限公司 | Blocking-prevention screw pump and method for preventing screw pump blocking |
| US20170083029A1 (en) * | 2014-07-09 | 2017-03-23 | Iiiinois Tool Works Inc. | Apparatus for the application of a liquid or viscous medium |
-
2018
- 2018-07-06 CN CN201810734936.5A patent/CN108591053B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0636560A1 (en) * | 1993-07-30 | 1995-02-01 | Ibau Hamburg Ingenieurgesellschaft Industriebau Mbh | Auger pump with guide grating for continuously conveying granulate or pulverulent flowable material |
| JPH11315791A (en) * | 1998-04-28 | 1999-11-16 | Katsuhiro Iguchi | Viscous fluid screw pump and operation control method therefor |
| US6491501B1 (en) * | 2000-09-01 | 2002-12-10 | Moyno, Inc. | Progressing cavity pump system for transporting high-solids, high-viscosity, dewatered materials |
| CN201351604Y (en) * | 2009-02-09 | 2009-11-25 | 天津机电进出口有限公司 | Screw feeding device |
| US20170083029A1 (en) * | 2014-07-09 | 2017-03-23 | Iiiinois Tool Works Inc. | Apparatus for the application of a liquid or viscous medium |
| CN106401944A (en) * | 2016-11-03 | 2017-02-15 | 福建金闽再造烟叶发展有限公司 | Blocking-prevention screw pump and method for preventing screw pump blocking |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108591053B (en) | 2023-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201568741U (en) | Automatic ore pulp delivery unit | |
| CN105313362A (en) | Device and method for solid-liquid separation of dry cleaning faeces of livestock | |
| AU2010201994A1 (en) | A Desalination System and Method | |
| CN106076148A (en) | A kind of blender with cleaning function | |
| CN106988535A (en) | With the building 3D printing head for being automatically injected additive function | |
| CN108591053A (en) | A kind of anti-blocking broken bridge method of sludge screw pump feed inlet | |
| CN1345531A (en) | Alignment controller for hydraulic driven centrol axle rotary irrigation system | |
| CN202311098U (en) | Automatic chocolate dripping forming line | |
| CN108894983B (en) | A kind of sludge screw pump speed regulation intelligent control method | |
| CN208845352U (en) | A kind of anti-blocking broken Biodge device of sludge screw pump feed inlet | |
| CN103256482B (en) | Electric heating type oil gas mixed transmission intelligent integrated system and control method thereof | |
| CN202336384U (en) | System for automatically adding heavy-medium suspension | |
| CN209920123U (en) | Intelligent grouting equipment | |
| CN207737979U (en) | A kind of sewage sludge feed mechanism | |
| CN208286128U (en) | A kind of intelligent feedstuff feeding equipment in farm | |
| CN106823505A (en) | Filter press self-adaption constant is pressed into mud system | |
| CN202348663U (en) | Modified structure of sewage transferring pump | |
| CN207864110U (en) | A kind of metering pump of non-woven fabrics safe and convenient | |
| CN102489394A (en) | System and adding method for automatically adding dense medium suspension | |
| CN203892279U (en) | Automatic liquid level control system for fracturing | |
| CN207810350U (en) | A kind of nuclear power plant's cement transportation system | |
| CN207362923U (en) | A kind of rural area lift pumping station Simple Control System | |
| CN206567268U (en) | A kind of cleaning device for producing scraper | |
| CN208800107U (en) | A kind of waterproof material reaction unit | |
| CN205779956U (en) | A kind of air injection machine hydraulic servo pump station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |