CN202606198U - Roller press hydraulic system and automatic pressure stabilizing device thereof - Google Patents
Roller press hydraulic system and automatic pressure stabilizing device thereof Download PDFInfo
- Publication number
- CN202606198U CN202606198U CN 201220201949 CN201220201949U CN202606198U CN 202606198 U CN202606198 U CN 202606198U CN 201220201949 CN201220201949 CN 201220201949 CN 201220201949 U CN201220201949 U CN 201220201949U CN 202606198 U CN202606198 U CN 202606198U
- Authority
- CN
- China
- Prior art keywords
- hydraulic system
- pressure
- rolling machine
- pressure device
- valve
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a roller press hydraulic system and an automatic pressure stabilizing device thereof, belonging to a roller press hydraulic system and an assorted device. The automatic pressure stabilizing device comprises a hydraulic oil station (1), a left side pressure stabilizing device (2) and a right side pressure stabilizing device (3), wherein energy accumulators (4) and combined valve bodies are arranged in the left side pressure stabilizing device (2) and the right side pressure stabilizing device (3); the energy accumulators (4) in the left side pressure stabilizing device (2) and the right side pressure stabilizing device (3) are communicated with oil cylinder working cavities (5) on both sides of the roller press hydraulic system through pipelines respectively; and the combined valve bodies in the left side pressure stabilizing device (2) and the right side pressure stabilizing device (3) are arranged close to oil cylinders on both sides of a roller press respectively. The automatic pressure stabilizing device for the roller press hydraulic system provided by the utility model is simple in integral structure, the problem of pressure fluctuation in the conventional hydraulic system of the roller press is well solved, the material extruding effect is enhanced, and the yield of a roller pressure system is increased.
Description
Technical field
The utility model relates to a kind of rolling machine hydraulic system and corollary apparatus, and in particular, the utility model relates generally to a kind of rolling machine hydraulic system and pressure automatic voltage regulator thereof.
Background technology
Roll squeezer has another name called squeezing mill, roll-in mill, is the energy-conservation milling equipment of novel concrete that international the mid-80 grows up; Have alternative energy consumption height, the low preparatory grinding system of ball mill of efficient, and reduce the function of steel consumption and noise, be applicable to the construction of new factory; Also can be used for the technological transformation of old factory; Make the ball mill system throughput improve 30-50%, account for 20-35%, account for 65-85% less than 2mm through 0.08mm fines in the material material cake after the extruding; Short grained internal structure is full of many fine cracks because of being squeezed, grindability is greatly improved.Roll surface adopts the thermal reactor weldering, and the wearing layer maintenance is more convenient.Its operation principle is to be made up of two compression rollers that rotate synchronously in opposite directions, and one is stationary roll, and one is movable roll; Material feeds from two rollers top; Be extruded roller and bring into continuously between roller, receive the high pressure effect of 50-100MPa after, become under the closely knit material cake slave and to discharge.The material cake of discharging except that containing a certain proportion of particulate finished product, in the inside of non-finished particle, produces a large amount of crackles, in further crushing process, can reduce the grinding energy consumption significantly.Hydraulic system is the extremely important critical component of roll squeezer, and the past is because many, the poor reliability of its fault has restricted applying of roll squeezer for a long time; Be mainly reflected in: the hydraulic system of conventional roll press is in running, and pressure transient fluctuates greatly; The pressurize effect is too poor, causes roll squeezer that the active force of material is changed greatly, and squeezing effect is poor; Influence system throughput, can not bring into play the effect of roll squeezer Increasing Production and Energy Saving well.Therefore be necessary to do further improvement to the hydraulic system on the roll squeezer of existing structure.
The utility model content
One of purpose of the utility model is to solve above-mentioned deficiency, provides to keep roll squeezer hydraulic jack pressure stability, and then make a kind of rolling machine hydraulic system and the pressure automatic voltage regulator thereof that roll squeezer moves under constant compression force.
For solving above-mentioned technical problem, the utility model adopts following technical scheme:
A kind of rolling machine hydraulic system automatic voltage regulator that the utility model provides on the one hand; Described automatic voltage regulator comprises hydraulic oil unit, left side stable-pressure device and right side stable-pressure device; Be provided with accumulator and combinaing valve body in described left side stable-pressure device and the right side stable-pressure device; Accumulator in left side stable-pressure device and the right side stable-pressure device is connected with the oil cylinder working chamber of rolling machine hydraulic system both sides through pipeline respectively, and the combinaing valve body in left side stable-pressure device and the right side stable-pressure device is installed in respectively near the oil cylinder of roll squeezer both sides; On the oil discharge passage of described hydraulic oil unit back-up valve is installed, and back-up valve through pipeline respectively with left side stable-pressure device and right side stable-pressure device in combinaing valve body be connected; Pressure tester also is installed on the described combinaing valve body, and pressure tester inserts programmable logic controller (PLC), and programmable logic controller (PLC) stable-pressure device and right side stable-pressure device to the left transmits control signal.
Further technical scheme is: described pressure tester, back-up valve, accumulator and combinaing valve body insert programmable logic controller (PLC) respectively; Programmable logic controller (PLC) transmits control signal to back-up valve, accumulator and combinaing valve body according to the pressure signal of pressure tester feedback, control back-up valve, the open and close of combinaing valve body and the action of accumulator.
Technical scheme further is: comprise pressurizing valve and pressure-reducing valve in the described combinaing valve body, and the effect of pressurizing valve and pressure-reducing valve is opposite, when pressurizing valve moved, pressure-reducing valve was failure to actuate, and pressure-reducing valve when action, pressurizing valve is failure to actuate.
Technical scheme further is: described pressurizing valve, pressure-reducing valve, accumulator and pressure tester together are installed in the sealing device.
Technical scheme further is: described accumulator is communicated with through sealing each other between the oil cylinder working chamber of pipeline and rolling machine hydraulic system both sides respectively.
Technical scheme further is: described back-up valve through pipeline respectively with left side stable-pressure device and right side stable-pressure device in combinaing valve body sealing be communicated with.
Technical scheme further is: described back-up valve is installed on the oil discharge passage of hydraulic oil unit through seal with screwed joint.
Technical scheme further is: described automatic voltage regulator is installed near the rolling machine hydraulic system.
The utility model provides a kind of rolling machine hydraulic system on the other hand, comprises at least two hydraulic jacks, and described hydraulic system comprises above-mentioned automatic voltage regulator.
Compared with prior art; One of beneficial effect of the utility model is: in time accomplish the action of repairing or oil suction accumulation of energy when the Volume Changes of hydraulic system two side cylinder working chambers through the accumulator in left side stable-pressure device and the right side stable-pressure device; Make the working chamber of two side cylinders of hydraulic system change at the roll squeezer roll gap; When causing its volume to change, continue to keep constant compression force.And the open and close of back-up valve are gone up at fluid,matching oil station, and at the working chamber volume no change of two side cylinders, and the pressure of hydraulic system is when fluctuation takes place, and ftercompction or decompression in the working chamber of both sides hydraulic jack in time makes that the pressure in the hydraulic system keeps constant.A kind of rolling machine hydraulic system automatic voltage regulator overall structure that the utility model provided simultaneously is simple; Solved the problem of roll squeezer conventional hydraulic pressure oscillation well; Oil cylinder working-pressure is stabilized in the scope of system requirements; Strengthen the squeezing effect of material, improved the output of roll squeezer system.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further to set forth.
First kind of embodiment that the utility model provided is a kind of rolling machine hydraulic system automatic voltage regulator, according to the practical function of the utility model, generally it is installed near the rolling machine hydraulic system.
With reference to shown in Figure 1; Described automatic voltage regulator comprises hydraulic oil unit 1, left side stable-pressure device 2 and right side stable-pressure device 3; Be provided with accumulator 4 and combinaing valve body in described left side stable-pressure device 2 and the right side stable-pressure device 3; Accumulator 4 in left side stable-pressure device 2 and the right side stable-pressure device 3 is connected with the oil cylinder working chamber of rolling machine hydraulic system both sides through pipeline respectively, and the combinaing valve body in left side stable-pressure device 2 and the right side stable-pressure device 3 is installed in respectively near the oil cylinder of roll squeezer both sides; On the oil discharge passage of described hydraulic oil unit 1 back-up valve is installed, and back-up valve through pipeline respectively with left side stable-pressure device 2 and right side stable-pressure device 3 in combinaing valve body be connected; Pressure tester also is installed on the described combinaing valve body, and pressure tester inserts programmable logic controller (PLC), and programmable logic controller (PLC) stable-pressure device 2 to the left transmits control signal with right side stable-pressure device 3.
Above-mentioned programmable logic controller (PLC) can be regarded the control maincenter of the utility model as; Automatic voltage regulator is controlled the operation of whole automatic voltage regulator through programmable logic controller (PLC) or the device that is similar to programmable logic controller (PLC); Specifically; The more above-mentioned a kind of embodiment that is more preferably of the utility model is for inserting programmable logic controller (PLC) with described pressure tester, back-up valve, accumulator 4 respectively with combinaing valve body; Programmable logic controller (PLC) transmits control signal with combinaing valve body to back-up valve, accumulator 4 according to the pressure signal of pressure tester feedback, control back-up valve, the open and close of combinaing valve body and the action of accumulator 4.
To the above-mentioned combinaing valve body of mentioning, it act as under the effect of Programmable Logic Controller, the pressure in the oil cylinder working chamber of the back-up valve adjustment rolling machine hydraulic system both sides on cooperation hydraulic oil unit 1 oil discharge passage; Make the pressure in the hydraulic system of roll squeezer both sides keep constant; As the optimal technical scheme of aforementioned combinaing valve body structure, the another kind of embodiment that the utility model provided comprises pressurizing valve and pressure-reducing valve in described combinaing valve body, being provided with, and the effect of pressurizing valve and pressure-reducing valve is opposite; When pressurizing valve moves; Pressure-reducing valve is failure to actuate, and pressure-reducing valve when action, pressurizing valve is failure to actuate; Cooperate accumulator 4 to carry out oil suction and repairing in the oil cylinder working chamber of rolling machine hydraulic system both sides respectively, guarantee the hydraulic jack constant pressure of hydraulic system both sides.
In the actual use of the foregoing description; When hydraulic oil unit 1 cooperates oil cylinder working chamber to the rolling machine hydraulic system both sides to carry out the adjustment of operating pressure through back-up valve and pressurizing valve, pressure-reducing valve, accumulator 4; Technical purpose realizes that effect is relatively poor under unsealed situation; Therefore the inventor of the utility model is with reference to prior art, to if not under the sealing situation, and the disorder of stable-pressure device easy build-up of pressure when carrying out the pressure adjustment; Can draw the utility model another relative preferred embodiment on above-mentioned basis thus; Be that described pressurizing valve, pressure-reducing valve, accumulator 4 and pressure tester together are installed in the sealing device, and, also on this basis the utility model carried out following improvement based on aforesaid reason; After technical scheme combination of its all or part of and the foregoing description, can form more preferred embodiment of the utility model: described accumulator 4 seals each other between the oil cylinder working chamber through pipeline and rolling machine hydraulic system both sides respectively and is communicated with.Described back-up valve through pipeline respectively with left side stable-pressure device 2 and right side stable-pressure device 3 in combinaing valve body sealing be communicated with.Described back-up valve is installed on the oil discharge passage of hydraulic oil unit 1 through seal with screwed joint.
The foregoing description to the utility model; What also need describe is; Left side stable-pressure device 2 that the utility model is mentioned and right side stable-pressure device 3 only are only treating merely two stable-pressure devices that comprised in the utility model; Be not qualification, should it be interpreted as to be installed in the stable-pressure device that the rolling machine hydraulic system both sides are symmetrical or asymmetric, structure is identical the utility model protection domain.
On the basis of the above-mentioned several kinds of embodiment of the utility model; The utility model is according to the concrete structure of the utility model rolling machine hydraulic system automatic voltage regulator; The another kind of embodiment that provides is a kind of rolling machine hydraulic system; Comprise at least two hydraulic jacks, described hydraulic system comprises the automatic voltage regulator described in the foregoing description.
According to the described rolling machine hydraulic system automatic voltage regulator of above-mentioned a plurality of embodiment; When programmable logic controller (PLC) sent the pressurization instruction according to the pressure information of pressure tester feedback, the back-up valve on this moment hydraulic oil unit 1 was opened, and the pressurizing valve in the stable-pressure device of a corresponding side is opened simultaneously; Repairing in accumulator 4; And accumulator 4 repairing in the oil cylinder working chamber of rolling machine hydraulic system both sides, increasing the pressure in the oil cylinder working chamber, and if less fluctuation appears in hydraulic system pressure; Also directly think that through accumulator 4 repairing is to increase pressure in the oil cylinder working chamber, this moment, pressure-reducing valve was failure to actuate; When programmable logic controller (PLC) sends the decompression instruction according to the pressure information of pressure tester feedback; Pressure-reducing valve in the corresponding side stable-pressure device is opened; Because the pressure in the oil cylinder working chamber of rolling machine hydraulic system both sides is higher, the part oil in the oil cylinder working chamber releases to sealing device through the drain tap on the pressure-reducing valve, and the hydraulic oil that releases is by 4 absorptions of accumulator; Make pressure decline in the corresponding side cylinder working chamber; Thereby reach the decompression purpose, when programmable logic controller (PLC) sent the decompression instruction, accumulator 4 was failure to actuate with back-up valve.
The concrete mode of carrying out supercharging and ftercompction according to the above-mentioned hydraulic jack working chamber in rolling machine hydraulic system of the utility model; Hydraulic system with the roll squeezer that the applicant was produced of the utility model is an example below, specifies as follows to the operation principle of the utility model:
Owing to get into the fluctuation of the inventory of roll squeezer, cause the fluctuation of roll squeezer work roll gap, the concrete condition that is occurred is following:
A, when work roll gap in the left side of roll squeezer from large to small the time; Cause the variation of the volume V a of left side oil cylinder working chamber in the hydraulic system; Trend from large to small appears in its pressure, repairing in the working chamber of necessary quick oil cylinder to the left at this moment, and programmable logic controller (PLC) sends the pressurization instruction according to the pressure detecting information that pressure tester fed back; The accumulator 4 of left side in the stable-pressure device 2 begins repairing in the working chamber of oil cylinder to the left, makes the pressure of left side oil cylinder keep constant.When work roll gap in the right side of roll squeezer from large to small the time; Cause the variation of volume V b of the working chamber of right side oil cylinder; Trend from large to small appears in pressure, and the accumulator 4 in the corresponding right side stable-pressure device 3 begins repairing in the working chamber of oil cylinder to the right, makes the pressure of left side oil cylinder keep constant.
B, when the left side of roll squeezer work roll gap changes from small to big; Cause the variation of the volume V a of the working chamber of left side oil cylinder in the hydraulic system; The trend that changing from small to big appears in pressure; Oil cylinder flowed into the hydraulic oil in the sealing device because of working chamber volume Va changes on the left of accumulator 4 in the stable-pressure device 2 of left side began to absorb, and kept the constant pressure of left side oil cylinder, the accumulator 4 beginning accumulation of energys on the left of this moment in the stable-pressure device 2.When right side work roll gap changes from small to big; Cause the variation of volume V a of the working chamber of right side oil cylinder; The trend that changing from small to big appears in pressure; Accumulator 4 in the right side stable-pressure device 3 begins to absorb the right side oil cylinder and changes the hydraulic oil that flows into sealing device because of volume V a, keeps the constant pressure of right side oil cylinder, the 4 beginning accumulation of energys of the accumulator in the right side stable-pressure device 3 at this moment.
C, remain unchanged when the roll gap of roll squeezer; When fluctuation appears in the pressure of its hydraulic system self; If the pressure of left side oil cylinder is lower than minimum working pressure, the back-up valve on hydraulic oil unit 1 oil discharge passage is opened at this moment, and the pressurizing valve in the left side stable-pressure device 2 is also opened immediately; Add the hydraulic oil ftercompction to the left in the oil cylinder, the left side oil cylinder working-pressure is remained in the working pressure range; If the left side oil cylinder working-pressure is higher than maximum working pressure, the pressure-reducing valve action in the left side stable-pressure device 2, the part hydraulic oil on the left of laying down in the oil cylinder working chamber makes left side pressure remain on working pressure range to sealing device.The same left side of oil cylinder working-pressure pressurize situation, right side.
Need to prove; Above-mentioned adding that is used for ftercompction or decompression or the action of laying down hydraulic oil are to carry out according to the pressure signal of pressure tester to the programmable logic controller (PLC) feedback; Therefore when the quantity that adds or lay down hydraulic oil make hydraulic jack constant in normal pressure interval value scope after, promptly stop adding or lay down hydraulic oil by the PLC controls stable-pressure device.
The repairing of the utility model, oil suction, to drive valve be to accomplish automatically with the action of closing valve: the variation of the work roll gap of roll squeezer causes the variation of volume V a of the working chamber of oil cylinder; Thereby cause the variation of pressure; Because the working chamber of oil cylinder is through being connected with the valve body of left and right sides respectively; On left side valve body and right side valve body, pressure tester has been installed all, pressure tester changes the oil cylinder working-pressure of measuring into the signal of telecommunication delivers to electrical control cubicles PLC (programmable logic controller (PLC)), and PLC judges according to this signal; Send repairing, oil suction, open orders such as valve and pass valve, reach the purpose of automatic voltage regulation.
" embodiment " who is spoken of in this manual, " another embodiment ", " embodiment ", etc., refer to the concrete characteristic, structure or the characteristics that combine this embodiment to describe and be included among at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in specification.Further, when describing a concrete characteristic, structure or characteristics in conjunction with arbitrary embodiment, what institute will advocate is that other embodiment of combination realize that this characteristic, structure or characteristics also drop in the scope of the utility model.
Although a plurality of explanatory embodiment with reference to the utility model is described the utility model here; But; Should be appreciated that; Those skilled in the art can design a lot of other modification and embodiments, and these are revised and embodiment will drop within disclosed principle scope of the application and the spirit.More particularly, in the scope of, accompanying drawing open and claim, can carry out multiple modification and improvement to the building block and/or the layout of subject combination layout in the application.Except modification that building block and/or layout are carried out with improve, to those skilled in the art, other purposes also will be tangible.
Claims (9)
1. rolling machine hydraulic system automatic voltage regulator; It is characterized in that: described automatic voltage regulator comprises hydraulic oil unit (1), left side stable-pressure device (2) and right side stable-pressure device (3); Be provided with accumulator (4) and combinaing valve body in described left side stable-pressure device (2) and the right side stable-pressure device (3); Accumulator (4) in left side stable-pressure device (2) and the right side stable-pressure device (3) is connected with the oil cylinder working chamber of rolling machine hydraulic system both sides through pipeline respectively, and the combinaing valve body in left side stable-pressure device (2) and the right side stable-pressure device (3) is installed in respectively near the oil cylinder of roll squeezer both sides; On the oil discharge passage of described hydraulic oil unit (1) back-up valve is installed, and back-up valve through pipeline respectively with left side stable-pressure device (2) and right side stable-pressure device (3) in combinaing valve body be connected; Pressure tester also is installed on the described combinaing valve body, and pressure tester inserts programmable logic controller (PLC).
2. rolling machine hydraulic system automatic voltage regulator according to claim 1 is characterized in that: described pressure tester, back-up valve, accumulator (4) insert programmable logic controller (PLC) respectively with combinaing valve body.
3. rolling machine hydraulic system automatic voltage regulator according to claim 1 and 2 is characterized in that:
Comprise pressurizing valve and pressure-reducing valve in the described combinaing valve body.
4. rolling machine hydraulic system automatic voltage regulator according to claim 3 is characterized in that: described pressurizing valve, pressure-reducing valve, accumulator (4) and pressure tester together are installed in the sealing device.
5. according to claim 1 or 4 described rolling machine hydraulic system automatic voltage regulators, it is characterized in that:
Described accumulator (4) is communicated with through sealing each other between the oil cylinder working chamber of pipeline and rolling machine hydraulic system both sides respectively.
6. rolling machine hydraulic system automatic voltage regulator according to claim 1 is characterized in that: described back-up valve through pipeline respectively with left side stable-pressure device (2) and right side stable-pressure device (3) in combinaing valve body sealing be communicated with.
7. rolling machine hydraulic system automatic voltage regulator according to claim 1 is characterized in that: described back-up valve is installed on the oil discharge passage of hydraulic oil unit (1) through seal with screwed joint.
8. rolling machine hydraulic system automatic voltage regulator according to claim 1 is characterized in that: described automatic voltage regulator is installed near the rolling machine hydraulic system.
9. a rolling machine hydraulic system comprises at least two hydraulic jacks, it is characterized in that: described hydraulic system comprises the described automatic voltage regulator of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220201949 CN202606198U (en) | 2012-05-08 | 2012-05-08 | Roller press hydraulic system and automatic pressure stabilizing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220201949 CN202606198U (en) | 2012-05-08 | 2012-05-08 | Roller press hydraulic system and automatic pressure stabilizing device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202606198U true CN202606198U (en) | 2012-12-19 |
Family
ID=47339931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220201949 Expired - Fee Related CN202606198U (en) | 2012-05-08 | 2012-05-08 | Roller press hydraulic system and automatic pressure stabilizing device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202606198U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174459A (en) * | 2014-09-03 | 2014-12-03 | 成都光华科技发展有限公司 | Nondestructive dismounting structure of speed reducer of roller press |
| CN110898896A (en) * | 2019-11-19 | 2020-03-24 | 成都九泰科技有限公司 | Integrated hydraulic adjusting and controlling system of roller press |
| CN111215233A (en) * | 2019-11-19 | 2020-06-02 | 成都九泰科技有限公司 | Deviation correction and pressure control method for roll squeezer system |
| CN112968145A (en) * | 2021-01-29 | 2021-06-15 | 佛山市天劲新能源科技有限公司 | Lithium ion pole piece rolling constant-pressure device |
-
2012
- 2012-05-08 CN CN 201220201949 patent/CN202606198U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174459A (en) * | 2014-09-03 | 2014-12-03 | 成都光华科技发展有限公司 | Nondestructive dismounting structure of speed reducer of roller press |
| CN104174459B (en) * | 2014-09-03 | 2017-04-19 | 成都光华科技发展有限公司 | Nondestructive dismounting structure of speed reducer of roller press |
| CN110898896A (en) * | 2019-11-19 | 2020-03-24 | 成都九泰科技有限公司 | Integrated hydraulic adjusting and controlling system of roller press |
| CN111215233A (en) * | 2019-11-19 | 2020-06-02 | 成都九泰科技有限公司 | Deviation correction and pressure control method for roll squeezer system |
| CN110898896B (en) * | 2019-11-19 | 2021-06-11 | 成都九泰科技有限公司 | Integrated hydraulic adjusting and controlling system of roller press |
| CN111215233B (en) * | 2019-11-19 | 2022-03-18 | 成都九泰科技有限公司 | Deviation correction and pressure control method for roll squeezer system |
| CN112968145A (en) * | 2021-01-29 | 2021-06-15 | 佛山市天劲新能源科技有限公司 | Lithium ion pole piece rolling constant-pressure device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202606198U (en) | Roller press hydraulic system and automatic pressure stabilizing device thereof | |
| CN106545530B (en) | A kind of hydraulic pump is superimposed the hydraulic quick forging unit of fuel feeding with high pressure accumulator | |
| CN103847128A (en) | Hydraulic control system | |
| CN104228109B (en) | The stepless self-checking device in a kind of vertical type ring mould straw briquetting machine mould roller gap | |
| CN201815329U (en) | Automatic constant gap deviation rectifying device of roll shafts of roll press | |
| CN202824153U (en) | Hydraulic control system for prestress oil cylinder of aluminum tape cast rolling machine | |
| CN106444880B (en) | A kind of pair of test medium can two-way flow compress control method | |
| CN102671735B (en) | Roller press hydraulic system and automatic pressure stabilizing device thereof | |
| CN203019708U (en) | Hydraulic control system | |
| CN203292211U (en) | Main machine for metal plastic extrusion molding | |
| CN201399352Y (en) | Roller press | |
| CN101690944B (en) | Quick opening and fastening device for rolling mill stand and working method thereof | |
| CN204544294U (en) | A kind of roll squeezer correction hydraulic system | |
| CN103362898A (en) | Multi-pressure-source energy-saving hydraulic system | |
| CN101733187B (en) | Load optimizing control system of roller press | |
| CN204099314U (en) | The automatic thickness hydraulic control system of high low pressure independence split | |
| CN102275331A (en) | Hydraulic leveling technique for presses | |
| CN204725889U (en) | Biomass block-making machine mould roller gap stepless regulator | |
| CN204429866U (en) | A kind of medium plate cooling after rolling system | |
| CN204553193U (en) | The piston sealing device of reciprocating pump | |
| CN203938918U (en) | A kind of four row two roll-in real shares milling trains | |
| CN201855832U (en) | Speed controlling system of ironing roller | |
| CN103692605B (en) | Mixing device in multistation high-pressure polyurethane foaming production line | |
| CN208166708U (en) | A kind of water treatment system of frequency control | |
| CN106312001B (en) | A method of realizing the transformation of slab caster slighter compress |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20140508 |