CN205937130U - A supercharging equipment for testing noise cancelling effect - Google Patents
A supercharging equipment for testing noise cancelling effect Download PDFInfo
- Publication number
- CN205937130U CN205937130U CN201620867355.5U CN201620867355U CN205937130U CN 205937130 U CN205937130 U CN 205937130U CN 201620867355 U CN201620867355 U CN 201620867355U CN 205937130 U CN205937130 U CN 205937130U
- Authority
- CN
- China
- Prior art keywords
- casing
- cooling water
- screw
- baffle plate
- water cover
- 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
Landscapes
- Compressor (AREA)
Abstract
The utility model discloses a supercharging equipment for testing noise cancelling effect, including casing and working chamber, casing top surface upwards protruding all around, the bulge top sets up the screw, the casing top be provided with with casing assorted cooling water cover, the cooling water is covered and is provided with the through -hole, the screw passes the through -hole and inserts to the screw in, there are a plurality of baffles the below of cooling water cover, has the cavity in the baffle, is provided with spring and backup pad in the cavity, the base is connected to the backup pad below, installs water inlet and delivery port on the side that the cooling water cover was parallel to each other respectively. When the cooling water cover is installed on the casing, bottom and the casing contact and the baffle perpendicular to of baffle bulge's side. The baffle is parallel to each other, and adjacent baffle is connected on the side of bulge difference. This device not only rinses the convenience, need not in addition to dismantle the casing assembly and the installation from helical -lobe compressor frequently, has reduced operating personnel's working strength, has also lengthened the life of casing simultaneously.
Description
Technical field
This utility model is related to air compressor field and in particular to a kind of supercharging equipment for testing erasure effect.
Background technology
Air compressor is also called air compressor machine, is the universal machine of modernization industry, is also the nucleus equipment of pneumatic system,
The mechanical energy of motor or diesel engine is converted into gas pressure energy by air compressor, reaches raising gas pressure by compressed gas
Power or the purpose of conveying gas.Air compressor is widely used in iron and steel, electric power, metallurgy, oil, mine, auto industry, aviation
The field such as space flight and infrastructure.
The species of air compressor is a lot, is broadly divided into positive displacement compressor and speed mode air compressor machine two big class.Wherein, hold
Long-pending formula air compressor machine have volume can periodically variable working chamber, positive displacement compressor rely primarily on its compressor host work
The periodically motion of the reciprocating member of intracavity or rotary part so that suck working chamber etc. mass gas volume-diminished from
And improve pressure.Part according to making cycle movement and changing working chamber volume in work intracavity moves reciprocatingly or does
Rotary motion, positive displacement compressor is divided into reciprocating air compressor and swinging air compressor machine again.
Swinging air compressor machine has rotary piston, mainly includes screw-rod air compressor, slide vane compressor, vacuum pump, Roots
Aerator etc..Wherein, screw-rod air compressor is divided into double-screw compressor and single screw compressor again, and screw-rod air compressor passes through the moon
Precision-fit between male rotor and between rotor and body fuselage, reduces gas backstreaming leakage, improves work efficiency,
In addition, screw-rod air compressor also has the advantages that vibration is little, noise is low, no consumable accessory.
Screw rod, that is, rotor can produce higher heat in working chamber during rotary squeezing gas, traditional screw pneumatics
It is provided with recirculated cooling water, the cooling rotor when rotor and chassis contact is so that rotor works suitable in the enclosure wall of machine
Work in temperature, it is to avoid high temperature produces equipment fault or the situation of shutdown occurs.After a period of time, coolant flow channel is easy
Heap scaliness, reduces the cooling effect of cooling water, the especially harder region of water quality, needs frequently coolant flow channel to be rushed
Wash, but traditional screw-rod air compressor in thoroughly cleaning incrustation scale it is necessary to first knockout machine housing assy, then unload lower casing assembly
Cooling water flow conduits shell washing water runner, operate inconvenient, and continually by casing assembly from screw rod
Dismantle in compressor and the working strength not only increasing operator is installed, also reduce the service life of casing.
Utility model content
Technical problem to be solved in the utility model is the defect for conventional screw air compressor machine casing assembly, purpose
It is to provide a kind of supercharging equipment for testing erasure effect, solve conventional screw air compressor machine and cool down current in thoroughly cleaning
During road, not only inconvenient, and continually casing assembly is dismounted from screw air compressor and not only increase operator
Working strength, also reduce the problem of casing service life.
This utility model is achieved through the following technical solutions:A kind of supercharging equipment for testing erasure effect, including machine
Shell, is provided with working chamber in casing, the surrounding of casing top surface raises up, and the top of bossing is provided with screw, in casing
Side is provided with the cooling water cover matching with casing, cooling water lid is provided with through hole, also includes screw, and screw passes through described logical
Hole is inserted in screw, the side that cooling water cover is parallel to each other is separately installed with water inlet and outlet, under cooling water cover
Side is vertically and fixedly provided with some baffle plates, and baffle interior is provided with cavity, is provided with spring and gripper shoe, lower spring end in described cavity
Connect gripper shoe top, the bottom activity of gripper shoe runs through the bottom of baffle plate and is connected with base, and the bottom of base and casing connect
Touch.Traditional screw-rod air compressor in use for some time, the coolant flow channel easy heap scaliness of setting in enclosure wall, reduce
The cooling effect of cooling water, needs coolant flow channel is rinsed, but, the coolant flow channel of conventional screw air compressor machine flows through
The region of corresponding working chamber side or bottom in enclosure wall, so when cleaning coolant flow channel, need casing assembly first from spiral shell
Take out in rod-type air compressor machine, then unload the shell of cooling water flow conduits washing water runner on lower casing, operate very not
Convenient, particularly in the place that some water quality are harder, operator need continually to tear casing assembly from helical-lobe compressor open
Unload and install, not only increase the working strength of operator, also reduce the service life of casing.In order to solve above-mentioned asking
Topic, this utility model provides a kind of casing for screw-rod air compressor, and this device includes casing and is arranged in casing
For accommodating the working chamber of negative and positive rotor, the surrounding of casing top surface raises up, and forms a groove in the top surface of casing, convex
Play part, that is, the top side wall of groove is provided with screw, also includes the cooling matching with the bossing size of cabinet top
Water cover, cooling water lid is provided with through hole, and screw is inserted in screw through through hole, and cooling water cover is fixed in casing.Cold
But some baffle plates perpendicular to cooling water cover are fixed below water cover, after cooling water cover is arranged on cabinet top, baffle plate intercepts cold
But the space between water cover and cabinet top, forms cooling water flow conduits.The side of cooling water cover is provided with water inlet and outlet,
When cooling water cover is fixed in casing, water inlet all connects space outerpace and the inner space of cooling water cover with outlet.For
Increase the flow distance of current, water inlet and outlet is arranged on the side be parallel to each other on cooling water lid it is preferred that water inlet
Mouth and outlet are near the cooling cornerwise position of water cover.Current after water inlet enters to cooling water flow conduits, through baffle plate
Intercept, flow out from outlet.Compared with prior art, when needing coolant flow channel is rinsed, without knockout machine housing assy,
Only need to unscrew screw, cooling water cover is taken off, then casing top surface and cooling water cover are carried out and wipe incrustation scale off, it
After cover cooling water cover, tighten screw.Meanwhile, with respect to the runner of the complicated bend of traditional casing inner wall setting, this dress
The casing top surface put is a groove structure, easily clears up and wipes off incrustation scale, and be used for intercepting and formed the coolant flow channel of complexity
Baffle plate setting cooling water cover bottom, by cooling water cover take off after baffle plate can be rinsed, without worry rinse water
Can splash to the other parts of screw-rod air compressor.This device is not only easy to clean, and need not continually by casing assembly from spiral shell
Dismantle in bar compressor and install, reduce the working strength of operator, also extend the service life of casing simultaneously.Separately
Outward, in practice, it has been found that when cooling water cover is fixed in casing, sometimes because screw is not tightened, or having tightened spiral shell
Still baffle bottom does not still have and chassis contact nail, leads to have gap between baffle plate and casing, when current flow through from gap,
Because runner becomes suddenly very narrow, current pass through gap with speed quickly, and this part current produces friction with baffle plate and casing
And produce heat, reduce the cooling effect of cooling water;Simultaneously as current, not according to flow passage, shorten cooling water
Time in coolant flow channel, also reduce cooling effect.In order to solve the above problems, the bottom of baffle plate is provided with cavity,
Setting spring and gripper shoe in cavity, spring upper end is connected with cavity top, lower spring end and gripper shoe upper-end contact, gripper shoe
Lower end connect base.The height between casing top surface for the slightly greater height than cooling water cover bottom surface of setting baffle plate top to base bottom
Degree, after cooling water cover is fixed in casing, base bottom and chassis contact, spring while tightening screw, in cavity
Shrink, after tightening screw, base upper end is supported the bounce of the spring that plate transmits, lower section is subject to the support force of casing, bottom
No longer there is a gap, it is to avoid cooling water flows through from gap between seat and casing;Moreover, when tightening screw also no
Need to worry that if baffle length is slightly long, twist tightly to damage very much baffle bottom and casing surface.
Further, when cooling water cover is arranged in casing, described baffle plate is perpendicular to the side of described bossing.Gear
Plate perpendicular to the side of bossing so that current will not flow through the gap between baffle plate and the side of bossing, and
It is the inwall flowing of the closing space being formed with cooling water cover along baffle plate and casing so that the flowing of current more has order
Sequence, it is ensured that the cooling effect of cooling water, increased flowing time in runner for the cooling water.In addition, traditional coolant flow channel
For warp architecture, incrustation scale can be formed optional position in runner, but after baffle plate is vertically connected on the bossing of casing top surface, water
Stream is at the turning of baffle plate and contact internal walls, or the corner between inwall forms vortex, along with the work of flow impact baffle plate
With incrustation scale easily is separated from the water out, and that is, incrustation scale is mainly formed around the corner, and in runner, the other positions except turning are
The position of main exchanged heat, these positions are difficult to form incrustation scale, extend the cleaning frequency.
Further, baffle plate is parallel to each other, and adjacent baffle plate is connected on the different side of bossing.Set by above-mentioned
Meter, coolant flow channel has been isolated into S-shaped runner, and current flow in S-shaped runner, not only make the runner of current more regular,
And increased the time of staying in coolant flow channel for the current, further increase cooling effect.
Further, along the direction vertical with baffle plate, the distance between adjacent screen is first gradually increased, then is gradually reduced.
Because the main effect of coolant flow channel is the screw rod of cooling work intracavity, and the vertical beeline position of working chamber and coolant flow channel
Middle part in coolant flow channel.Shorten the distance near the adjacent screen of both sides for the coolant flow channel, during increase coolant flow channel is close
The distance of the adjacent screen of the heart, can increase the time that cooling water rests in the coolant flow channel the shortest with screw rod vertical distance,
So that the cooling to screw rod is more abundant.Simultaneously as the runner near water inlet and outlet is narrower, increased cooling
The flow velocity of water, it is to avoid when cooling water flows through the runner above screw rod, temperature has built up, and improves cooling effectiveness.
Further, baffle plate is provided with temperature monitoring.By arranging temperature monitoring, can be in coolant flow channel
Cooling water temperature carries out monitor in real time, and when temperature exceedes setting value, temperature monitoring sends alarm to monitoring system, reminds work
Make personnel, the temperature of cooling water is higher.Now there are two kinds of situations, if cooling water self-temperature is higher, then need staff
Reduce the temperature of input cooling water;If the screw rod of work intracavity rotates breaking down, then shutdown is needed to carry out inspection and maintenance.
Temperature monitoring ensure that the use safety also ensuring air compressor machine while cooling effectiveness.
Further, the bottom of base is provided with sealing gasket.Sealing gasket can be further such that base be combined tightly with casing
Close, it is to avoid cooling water flows through from gap between the two.
Further, the top setting of casing projection is fluted, described cooling water lid is provided with and groove phase contract
The boss closing, boss is provided with the sealing gasket matching.In the top setting groove of the projection of casing top surface, exist simultaneously
On cooling water lid, the boss that agreed with groove phase is set, and the contact surface in groove and boss is equipped with sealing gasket so that cold
But water cover is even closer with the combination of casing, prevents cooling water from flowing out from the gap between cooling water cover and casing, infringement is empty
The remainder of press.
Further, sealing gasket is made up of nitrile rubber.Nitrile rubber not only acts as the effect of sealing waterproof moreover it is possible to play
The effect of buffering, it is to avoid casing and base, groove and boss with reference to when mutually swipe, simultaneously nitrile rubber also have certain
Frictional force.
Further, water inlet is connected with water softening device.Water softening device be mainly used in remove water in Calcium Carbonate and
Magnesium carbonate, particularly in the region that some water quality are harder, water softening device can reduce what cooling water was formed in coolant flow channel
Amount of scale, extends the cleaning frequency of coolant flow channel.
This utility model compared with prior art, has such advantages as and beneficial effect:
1st, this utility model is raised up by the surrounding in casing top surface, forms a groove in the top surface of casing, also
It is provided with the cooling water cover matching with the bossing size of cabinet top, fix some baffle plates below cooling water cover, cooling
After water cover is arranged on cabinet top, between cooling water cover and casing, form cooling water flow conduits.This device is not only easy to clean, and
And continually casing assembly need not be dismantled from helical-lobe compressor and install, reduce the working strength of operator, simultaneously
Also extend the service life of casing;
2nd, with respect to the runner of the complicated bend of traditional casing inner wall setting, the casing top surface of this device is a groove knot
Structure, easily clears up and wipes off incrustation scale, and be used for intercepting and formed the baffle plate setting of the coolant flow channel of complexity at the bottom of cooling water cover
Portion, by cooling water cover take off after baffle plate can be rinsed, without worry rinse water can splash to screw-rod air compressor other
Part;
3rd, this utility model arranges the slightly greater height than cooling water cover bottom surface of baffle plate top to base bottom to casing top surface
Between height, after cooling water cover is fixed in casing, base bottom and chassis contact, while tightening screw, cavity
Interior spring contraction, after tightening screw, base upper end is supported the bounce of the spring that plate transmits, and lower section is propped up by casing
Support force, no longer have gap between base and casing, it is to avoid cooling water flows through from gap, causes runner to shorten and coolant water temperature
Degree be raised to so that cooling effect reduce problem;
4th, this utility model shortens the distance near the adjacent screen of both sides for the coolant flow channel, increases coolant flow channel near center
Adjacent screen distance, the time that cooling water rests in the coolant flow channel the shortest with screw rod vertical distance can be increased, make
Must be more abundant to the cooling of screw rod.Simultaneously as the runner near water inlet and outlet is narrower, increased cooling water
Flow velocity, it is to avoid when cooling water flows through the runner above screw rod, temperature has built up, and improves cooling effectiveness;
5th, this utility model is provided with temperature monitoring, and the cooling water temperature in coolant flow channel can be supervised in real time
Control, when temperature exceedes setting value, temperature monitoring sends alarm to monitoring system, reminds staff, the temperature of cooling water
Higher, not only ensure the use safety also ensuring air compressor machine while cooling effectiveness.
Brief description
Accompanying drawing described herein is used for providing this utility model embodiment is further understood, and constitutes the one of the application
Part, does not constitute the restriction to this utility model embodiment.In the accompanying drawings:
Fig. 1 is this utility model structural representation;
Fig. 2 is the upward view of cooling water cover;
Fig. 3 is the structural representation of baffle plate.
Labelling and corresponding parts title in accompanying drawing:
1- casing, 2- working chamber, 3- cools down water cover, 4- water inlet, 5- screw, 6- outlet, 7- baffle plate, 8- screw, 9-
Temperature monitoring, 10- base, 11- spring, 12- gripper shoe.
Specific embodiment
For making the purpose of this utility model, technical scheme and advantage become more apparent, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, is not intended as to restriction of the present utility model.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, this utility model is a kind of supercharging equipment for testing erasure effect, including machine
Shell 1, is provided with working chamber 2 in casing 1, the surrounding of casing 1 top surface raises up, and the top of bossing is provided with screw 8, machine
It is provided with the cooling water cover 3 matching with casing 1 above shell 1, cooling water cover 3 is provided with through hole, also includes screw 5, screw 5
It is inserted in screw 8 through described through hole, the side that cooling water cover 3 is parallel to each other is separately installed with water inlet 4 and outlet
6, the downward vertical of cooling water cover 3 is fixed with some baffle plates 7, and baffle plate 7 is internally provided with cavity, is provided with spring 11 He in cavity
Gripper shoe 12, spring 11 lower end connects gripper shoe 12 top, and the bottom activity of gripper shoe 12 runs through the bottom of baffle plate 7 and is connected with
Base 10, the bottom of base 10 is contacted with casing 1.When cooling water cover is arranged in casing, baffle plate 7 is perpendicular to described lobe
The side divided.Baffle plate 7 is parallel to each other, and adjacent baffle plate 7 is connected on the different side of bossing.Edge is vertical with baffle plate 7
Direction, the distance between adjacent screen 7 is first gradually increased, then is gradually reduced.Temperature monitoring 9 is provided with baffle plate 7.Base 10
Bottom sealing gasket is installed.The top setting of casing 1 projection is fluted, and cooling water cover 3 is provided with and groove phase contract
The boss closing, boss is provided with the sealing gasket matching.Sealing gasket is made up of nitrile rubber.Water inlet 4 is connected with softened water
Device.When needing coolant flow channel is rinsed, without knockout machine housing assy it is only necessary to unscrew screw 5, water cover 3 will be cooled down
Take off, then wipe against casing 1 top surface, the runner of the complicated bend of relatively conventional casing 1 inwall setting, the casing 1 of this device is pushed up
Face is a groove structure, easily clears up and wipes incrustation scale off, baffle plate 7 can be rinsed and wipe off after cooling water cover 3 is taken off
Incrustation scale, covers cooling water cover 3, baffle plate 7 bottom is contacted with casing 1, the spring 11 while tightening screw 5, in cavity afterwards
Shrink, after tightening screw 5, base 10 upper end is supported the bounce of the spring 11 that plate 12 transmits, lower section is subject to propping up of casing 1
Support force, no longer has gap between base 10 and casing 1, it is to avoid flow through gap between base 10 and casing 1 for the cooling water,
Tighten screw 5 afterwards.This device is not only easy to clean, and continually need not tear casing assembly from helical-lobe compressor open
Unload and install, reduce the working strength of operator, also extend the service life of casing simultaneously.
Above-described specific embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect
One step describes in detail, be should be understood that and the foregoing is only specific embodiment of the present utility model, is not used to limit
Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, equivalent replaces
Change, improve, should be included within protection domain of the present utility model.
Claims (9)
1. a kind of supercharging equipment for testing erasure effect, including casing(1), described casing(1)Inside it is provided with working chamber
(2)It is characterised in that described casing(1)The surrounding of top surface raises up, and the top of described bossing is provided with screw(8),
Casing(1)Top is provided with and casing(1)The cooling water cover matching(3), described cooling water cover(3)On be provided with through hole, also
Including screw(5), described screw(5)It is inserted into screw through described through hole(8)In, cool down water cover(3)The side being parallel to each other
On be separately installed with water inlet(4)And outlet(6), cool down water cover(3)Downward vertical be fixed with some baffle plates(7), described
Baffle plate(7)It is internally provided with cavity, in described cavity, be provided with spring(11)And gripper shoe(12), described spring(11)Lower end is even
Connect gripper shoe(12)Top, gripper shoe(12)Bottom activity run through baffle plate(7)Bottom and be connected with base(10), described bottom
Seat(10)Bottom and casing(1)Contact.
2. a kind of supercharging equipment for testing erasure effect according to claim 1 is it is characterised in that work as cooling water cover
(3)It is arranged on casing(1)When upper, described baffle plate(7)Side perpendicular to described bossing.
3. a kind of supercharging equipment for testing erasure effect according to claim 1 or 2 is it is characterised in that described
Baffle plate(7)It is parallel to each other, adjacent baffle plate(7)It is connected on the different side of bossing.
4. a kind of supercharging equipment for testing erasure effect according to claim 3 it is characterised in that along and baffle plate
(7)Vertical direction, adjacent screen(7)The distance between be first gradually increased, then be gradually reduced.
5. a kind of supercharging equipment for testing erasure effect according to claim 4 is it is characterised in that described baffle plate
(7)On be provided with temperature monitoring(9).
6. a kind of supercharging equipment for testing erasure effect according to claim 1 is it is characterised in that described base
(10)Bottom sealing gasket is installed.
7. a kind of supercharging equipment for testing erasure effect according to claim 1 is it is characterised in that described casing
(1)The top of projection arranges fluted, described cooling water cover(3)On be provided with the boss agreeing with groove phase, on boss
It is provided with the sealing gasket matching.
8. a kind of supercharging equipment for testing erasure effect according to claim 6 or 7 is it is characterised in that described close
Packing is made up of nitrile rubber.
9. a kind of supercharging equipment for testing erasure effect according to claim 1 is it is characterised in that described water inlet
(4)It is connected with water softening device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201620867355.5U CN205937130U (en) | 2016-08-11 | 2016-08-11 | A supercharging equipment for testing noise cancelling effect |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201620867355.5U CN205937130U (en) | 2016-08-11 | 2016-08-11 | A supercharging equipment for testing noise cancelling effect |
Publications (1)
Publication Number | Publication Date |
---|---|
CN205937130U true CN205937130U (en) | 2017-02-08 |
Family
ID=57921087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201620867355.5U Expired - Fee Related CN205937130U (en) | 2016-08-11 | 2016-08-11 | A supercharging equipment for testing noise cancelling effect |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN205937130U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106089725A (en) * | 2016-08-11 | 2016-11-09 | 成都陵川常友汽车部件制造有限公司 | For detecting the pressurizer of erasure effect |
-
2016
- 2016-08-11 CN CN201620867355.5U patent/CN205937130U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106089725A (en) * | 2016-08-11 | 2016-11-09 | 成都陵川常友汽车部件制造有限公司 | For detecting the pressurizer of erasure effect |
CN106089725B (en) * | 2016-08-11 | 2018-06-26 | 四川行之智汇知识产权运营有限公司 | For detecting the supercharging device of erasure effect |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN205937130U (en) | A supercharging equipment for testing noise cancelling effect | |
CN107943238B (en) | Computer cabinet | |
CN201137592Y (en) | Flushing air exhausting structure for water pump machine sealed chamber | |
CN106089725A (en) | For detecting the pressurizer of erasure effect | |
CN205937124U (en) | Quality testing device of component of making an uproar falls in engine | |
CN206035818U (en) | Supplementary air pressure device of research muffler effect | |
CN205937133U (en) | Detection line suitable for desert cross country vehicle sound eliminating system | |
CN205407470U (en) | Motor water cooling plant | |
CN205937129U (en) | Protection architecture of automobile -used hush pipe check out test set | |
CN205937125U (en) | Checkout system of muffler gas tightness | |
CN208437662U (en) | One kind being used for large-scale grey iron steam turbine cylinder casting device | |
CN106089720B (en) | The check device of resistive muffler air-tightness | |
CN106089722A (en) | The hush pipe detection equipment of automobile engine | |
CN106089721B (en) | The quality inspection system of engine noise reduction element | |
CN204853523U (en) | Smoke guard door | |
CN106122020A (en) | Probe into the assist gas pressure system of deafener effect | |
CN206801861U (en) | A kind of mechanically-sealing apparatus of impeller pump | |
CN202833039U (en) | Air compressor | |
CN106089727A (en) | Silene system for desert offroad vehicle detects equipment | |
CN210655937U (en) | Cooling device based on electric block for underground coal mine | |
CN209990921U (en) | Efficient energy-saving control valve for oil heater | |
CN209385313U (en) | Anhydrous cooling air cylinder structure | |
CN207913772U (en) | A kind of chemical retort | |
CN202560329U (en) | Improved screw expander | |
CN217121675U (en) | Continuous casting crystallizer vibration cylinder protector |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 Termination date: 20170811 |
|
CF01 | Termination of patent right due to non-payment of annual fee |