CN209612470U - Filter device is used in starch derivative solvent extraction - Google Patents

Abstract

The utility model discloses a kind of starch derivative solvent extraction filter devices, including with dry tube inner chamber perforation filter vat, be installed on temperature holding meanss inside filter vat for being kept the temperature to solvent gas, be connected at filter vat bottom inlet the filter assemblies for being used for filtering solid particles in filter vat for stablizing the constant-voltage equipment of pressure in filter vat and being set to, solvent gas outlet is provided on the filter vat, the solvent gas outlet is located above filter assemblies；The utility model is filtered out the solid particle dust in solvent gas by filter vat; improve the recycling quality of solvent gas; to filter temperature within the barrel and extract temperature in cylinder to keep balancing by temperature holding meanss; prevent solvent gas from entering the condensation as caused by the temperature difference in filter vat; the air pressure inside filter vat is kept to keep constant in a certain range by stable-pressure device, to provide a metastable filtering environment in filter vat.

Description

Filter device is used in starch derivative solvent extraction

Technical field

The utility model relates to food technology field, in particular to filter device is used in a kind of starch derivative solvent extraction.

Background technique

The production process of starch derivatives generally requires methanol, ethyl alcohol or isopropanol as solvent, after reaction, leads to It crosses centrifuge separation and falls solvent, still can be adsorbed with many solvents in material, general content accounts for about 30% of weight of material or so, mesh Preceding domestic production producer is essentially all directly with hot-air flow drying machine, and residual solvent is not recycled in convection drying discharge, remaining Solvent in an atmosphere, not only makes that starch derivatives production solvent-oil ratio is big, high production cost with hot wind direct emission, but also to ring Border generates pollution.

Utility model content

In view of this, the present invention provides a kind of starch derivative solvent extraction filter devices, will by this device Solid particle dust in solvent gas filters out, and improves the recycling quality of solvent gas, and makes warm in filter device Degree keeps balancing with temperature in drying cylinder, prevents solvent gas from entering the condensation as caused by the temperature difference in filter device.

The starch derivative solvent of the utility model, which extracts, uses filter device, including the filtering with dry tube inner chamber perforation Bucket is installed on the temperature holding meanss for being used to keep the temperature solvent gas inside filter vat, is connected to filter vat bottom inlet Place is used for the filter assemblies of filtering solid particles for stablizing the constant-voltage equipment of pressure in filter vat and being set in filter vat, Solvent gas outlet is provided on the filter vat, the solvent gas outlet is located above filter assemblies.

Further, the temperature holding meanss are the cyclic annular heating dress for being connected to filter vat inner wall and circumferentially extending formation It sets.

Further, the heating device is heating liner annular in shape, is closed between the heating liner and filter vat inner wall For at closed heating chamber, be provided on the filter vat run through heating chamber and steam inlet for injecting hot steam and Discharge outlet.

Further, the constant-voltage equipment includes being installed at filter vat bottom inlet and axially slidable valve deck and company Connecing on valve deck has the pressure maintaining elastic parts of axial elasticity power with and to valve deck, is provided with for air inlet at the bonnet central Opening.

Further, the heating liner inner cavity is in the frustum body reduced from bottom to top.

Further, the steam inlet is located at the lower curtate of heating chamber and keeps spacing, the draining with heating chamber bottom Mouth runs through the lowest part of heating chamber bottom.

Further, the heating liner inner wall has circumferential evenly distributed multiple vertically extending diversion trenches.

Further, the filter assemblies include being installed on the lower filter device of heating liner bottom and being installed in heating The upper filter screen at top is served as a contrast, the lower filter device includes lower filter screen annular in shape and the gear for being filled in lower filter screen inner circle Piece, the lower filter screen are covered in water conservancy diversion trench bottom.

Further, the pressure maintaining elastic parts includes the lock ring being threadedly connected at lauter tub bottom inlet and is connected to lock Pressure maintaining elastic component between ring and valve deck, the lock ring are located at below valve deck.

The utility model has the beneficial effects that

The utility model is filtered out the solid particle dust in solvent gas by filter vat, improves solvent gas Quality is recycled, to filter temperature within the barrel and extract temperature in cylinder to keep balancing by temperature holding meanss, prevents solvent gas The condensation as caused by the temperature difference in into filter vat keeps the air pressure inside filter vat one by the compensation of stable-pressure device Determine to keep constant in range, to provide a metastable filtering environment in filter vat, improves the extraction efficiency of solvent；

The utility model, to heating is realized in heating chamber, convenient for controlling its limit high temperature, is prevented by steam-heated mode Only internal solvent gas overheats；

The utility model passes through the heating liner of frustum physique structure, so that solvent gas is transported upwards along tapered slope Row, solvent gas and heating liner realize sufficient heat exchange, while guaranteeing that solvent gas is slowly evenly heated, and avoid temperature prominent Become caused by abrupt pressure change, diversion trench can both realize to gas operation guiding role, also increase gas and heating liner with The contact area of gas, improves heat exchanger effectiveness；

The utility model realizes the thorough filtering to the solid particulate matter in solvent gas by secondary filtration, wherein molten Agent gas can only enter to inside filter vat from cricoid lower filter screen, solvent gas by after lower filter screen along diversion trench to Upper operation, this structure guide solvent gas to enter to inside filter vat from water conservancy diversion trench bottom and flow upwards along heating liner side wall It is dynamic, by continuous heat exchange, effectively avoids that condensation occurs, improve the extraction efficiency of solvent.

Detailed description of the invention

The utility model is further described with reference to the accompanying drawings and examples.

FIG. 1 is a schematic structural view of the utility model 1；

Fig. 2 is the utility model structure diagram 2；

Fig. 3 is mixing component structural schematic diagram；

Fig. 4 is filter apparatus configuration schematic diagram；

In attached drawing:

1- extracts cylinder, 2- collet, 3- shaft, 4- heating interlayer, the steam inlet 5-, 6- condensation-water drain, 7- feed inlet, 8- Discharge port, 9- installation set, 10- stirring-head, 10a- poke hole, 11- are crushed net, 12- elasticity scraping article, 12a- strip scratch, 13- bullet Property part, 14- mounting groove, 15- mounting base, 16- telescope motor, 17- screw rod, 18- telescopic, 19- outer cover, 19a- locking part, 20- Filter vat, 21- solvent gas are exported, are filtered on 22- heating liner, 23- heating chamber, 24- steam inlet, 25- discharge outlet, 26- Filter screen, 28- baffle, 29- lock ring, 30- pressure maintaining elastic component, 31- valve deck, 32- installing base frame, 33- supporting leg, 34- under net, 27- Driving motor, 35- retarder, 36- pedestal, 37- vacuum pump.

Specific embodiment

FIG. 1 is a schematic structural view of the utility model 1；Fig. 2 is the utility model structure diagram 2；Fig. 3 is mixing component knot Structure schematic diagram；Fig. 4 is filter apparatus configuration schematic diagram；

Filter device is applied in starch derivative solvent extraction element, for convenient for clearer this filter device that illustrates Principle and structure, the present embodiment by taking starch derivative solvent extraction element as an example to the structure of filter device and operation logic into Row is described in detail；

It is as shown in the figure: solvent extraction device in the starch derivatives of the present embodiment, including extract cylinder 1, be wrapped in extraction cylinder Outer collet 2, with extract the shaft 3 of cylinder coaxial arrangement, the agitating device that transmission is matched in shaft 3, drive shaft rotation Driving device is installed on the negative pressure formation device extracted on cylinder for making to extract formation negative pressure inside cylinder and is installed on extraction cylinder Top is simultaneously connected to the filter device for filter solvents gas with extraction tube inner chamber, is provided with solvent gas on the filter device Outlet 21, the collet and extracts drum outer wall and forms 4, be provided on the collet with the steam inlet 5 of heating interlayer perforation and Condensation-water drain 6 is provided with feed inlet 7 and discharge port 8 on the extraction cylinder 1；It is set as shown in Figure 1, extracting 1 axis horizontal of cylinder It sets, driving device is to be set to the driving motor 34 extracted outside cylinder, and driving motor power is transferred to after being slowed down by retarder 35 In shaft, wherein the input shaft of the output shaft of driving motor and retarder is driven by shaft coupling and is cooperated, the output shaft of retarder Be driven and cooperated by shaft coupling with shaft, certainly, driving device may be internal combustion engine equal power device, driving device can with turn The direct-connected drive shaft rotation of axis, is not repeating specifically；It extracts cylinder bottom and is fixedly connected with supporting leg 33, the driving motor and deceleration Device is installed on pedestal 36, and pedestal and supporting leg are fixedly connected on installing base frame 32, is made driving motor through this structure, is slowed down Device and extraction cylinder and installing base frame form an entirety, improve the global consistency of each components of extraction element, and mention The high operation stability of extraction element；In use, starting negative pressure forms device, so that mentioning by feed inlet 7 plus base material It takes and keeps subnormal ambient in cylinder, lead to steam into heating interlayer by steam inlet 5 and heated to cylinder is extracted, it is residual in material After filtering dust by filter device after remaining solvent steam raising, the extraction of solvent, solvent are realized by solvent gas outlet 21 The external condenser of gas vent makes solvent gas liquefy, and during heating, drives agitating device rotation internal by shaft Portion's material stirring contacts material rolling in extraction cylinder uniformly with cylinder inner wall is extracted, and material is evenly heated evaporation, and material is dry It is discharged after dry by discharge port 8；Wherein negative pressure, which forms device, can be used the realization of vacuum pump 37 to extraction cylinder inner air It quickly extracts, so that extracting moment inside cylinder forms subnormal ambient, the preferably intermittent operation of vacuum pump is so that extract intermittent in cylinder Form moment subnormal ambient, use outside collet heat-barrier material carry out package prevent thermal loss or collet itself can be used every Hot material is made, and is not repeating specifically；By subnormal ambient make in material solvent can steam raising at a temperature of lower bottom, lead to It crosses steam-heated mode and is heated to cylinder is extracted, may make that heating temperature is controllable, can effectively avoid to extract cylinder and overheat causes Solvent denaturation, this structure can at a temperature of the bottom of compared with effective Extraction solvent, and effectively avoid solvent overheat and chemically react, The purity of solvent extraction is improved, and avoids internal solvent from reacting and the corrosion to the formation of cylinder inner wall is extracted, improves extraction cylinder Service life.

In the present embodiment, the steam inlet 5 and condensation-water drain 6 are respectively arranged at the top and bottom of collet；Due to Temperature at steam inlet is higher, therefore steam inlet is set to the top of collet, so that extracting the Temperature Distribution of cylinder bottom more Uniformly, material is most of contacts with extraction cylinder bottom, can effectively prevent the heating of material caused by extracting cylinder bottom hot-spot not Equal phenomenon, this structure may make material evenly drying, and can avoid material hot-spot causes rapid draing even to be burnt now As improving solvent extraction quality.

In the present embodiment, the negative pressure forms device and is installed on the side wall for extracting 1 axial direction of cylinder, and being provided on the side wall makes It extracts 1 inner cavity of cylinder and negative pressure forms the negative pressure hole of device perforation, the negative pressure hole is located at the region that the side wall is located at below shaft It is interior, spacing is kept between the negative pressure hole and the circumferential inner sidewall for extracting cylinder；This structure goes out negative pressure hole apart from solvent gas Farther out, the preferred negative pressure hole of the present embodiment and solvent gas outlet are distributed in the two sides for extracting cylinder axial direction to mouth distance, can avoid Be partially formed vacuum environment to solvent gas outlet outlet impact, intermediate pump formed vacuum environment vacuum degree according to It is adjusted according to actual conditions, avoids extracting the excessive generation for leading to gas backflow phenomenon of vacuum degree in cylinder, meanwhile, negative pressure hole and extraction It keeps spacing to prevent material from entering between medial wall of the tube and forms blocking in negative pressure hole.

In the present embodiment, the agitating device include detachably be placed in shaft and with its be driven the installation set 9 of cooperation with And it is connected on installation set outer peripheral surface and is circumferentially being in several mixing components of equal angles setting, several described mixing components In installation set axial direction spaced set；The settable bearing block on extracting cylinder axially inner side wall is provided with axis in bearing block It holds, bearing and rotating shaft transmission cooperate, and installation set covers in shaft, and wherein the both ends of installation set, which can be against, extracts cylinder axially inner side wall On bearing end form axially position, other structures form also can be used in the axially position of specific installation set, specifically not superfluous It states, installation set and shaft can form transmission cooperation by spline or flat key, this structure facilitates the detachable maintaining of installation set, wherein stirring It is settable multiple to mix component, in the present embodiment there are five settings, the stirring group of settable other quantity in certain other embodiments Part, mixing component are staggered in the axial direction, comprehensive stirring can be carried out to its materials inside extracting cylinder axial direction, Each mixing component is circumferentially uniformly arranged in installation set, and coincidence factor when material stirring can be improved, and improves stirring efficiency.

In the present embodiment, the mixing component includes telescopic component and the connection for being connected to installation set and expandable In the stirring-head 10 on telescopic component；The stretching structure of this telescopic component can be manual telescopic structure or electric expansion structure, When for manual telescopic structure, telescopic component is set as the two-part structure that can be slided relatively, is connected by multiple vertical arrays Hole and screw realize length adjustment, when for electric expansion structure, can realize the electronic of telescopic component by straight line driving mechanism Length adjustment carries out length adjustment by flexible, can be adapted to the extraction cylinder of different-diameter, improve the standard of components, simultaneously Stirring-head can be adjusted by telescopic component according to the difference of institute's dried material and extract the spacing between cylinder, material is avoided to be filled in Therebetween stirring-head stuck phenomenon occurs.

In the present embodiment, the telescopic component includes the mounting base 15 being connected in installation set, is installed in mounting base Telescope motor 16 matches the screw rod 17 for merging edge extraction cylinder and radially extending with the transmission of telescope motor output shaft, passes through screw thread with screw rod The telescopic 18 of auxiliary driving cooperation, the outer cover 19 for being connected in mounting base 15 and covering telescope motor, the shield base edge Extraction cylinder, which radially extends to be wrapped in outside telescopic, forms locking part 19a, outside the section of the locking part intracavity section and telescopic Profile is in compatible polygon, and the stirring-head is connected to the outer end of telescopic；In the present embodiment, telescopic component is using electronic Adjustment structure, by the operation of telescope motor so that telescopic elongates or shortens, so as to adjust each stirring-head in real time and mention The spacing between an inner wall is taken, the extraction cylinder of different-diameter can be adapted to, when stuck phenomenon occurs for one of stirring-head, is led to Stuck phenomenon can be improved by overregulating the flexible of this agitating device, can adjust the position of stirring-head in real time automatically through this structure It sets, flexible and convenient to use, outer cover can be fixedly connected in mounting base by screw, be limited by the cooperation of locking part and telescopic The rotation of telescopic, locking part have guiding role to telescopic simultaneously, so that telescopic has single-degree-of-freedom with respect to locking part Linear movement, locking part inner cavity and telescopic outer profile section use regular hexagon structure, can also be used certainly rectangle or other Polygonized structure, details are not described herein again.

In the present embodiment, there is the mounting groove for being recessed inwardly and being formed in the mounting base 15, the outer cover 19 covers in mounting groove Upper and mounting groove is encircled into the motor installation cavity for installing telescope motor；Motor is packaged in installation cavity by outer cover, is made It obtains motor to be isolated from the outside, as shown in figure 3, outer cover is in hierarchic structure, is against on motor that motor is formed to encapsulate at ladder and determines Position, this structure are convenient for the installation of motor, while motor being isolated with external environment.

In the present embodiment, the opposite end face for extracting cylinder inner wall of the stirring-head is in the arc with extraction cylinder inner wall coaxial arrangement Face meets the poke hole 10a that its traffic direction offers perforation on the stirring-head, is provided with broken net 11 in the poke hole； The cambered surface and extraction cylinder inner wall coaxial arrangement meaning of stirring-head is where peripheries where the cambered surface of stirring-head and extraction cylinder inner wall Periphery is coaxial, and the cambered surface setting of stirring-head avoids this end face from having sharp corners, prevents stirring-head from scratching and extracts cylinder inner wall, stirs When mixing head in company with shaft high-speed rotation, material enters in poke hole in face of stirring-head, and passes through broken net and be crushed, and prevents Material agglomeration, refines the granularity of material, improves the evaporation effect of material, poke hole section can be according to stirring-head specific constructive form It determining, can be round, rectangle or other polygonized structures, the mesh size for being crushed net is determined according to the physical attribute of material, It is crushed network optimization in the present embodiment and selects wire netting, improves material by the passage capacity of broken net, improves its crushing effect.

In the present embodiment, its traffic direction one end is met on the stirring-head with inclined inclined-plane and makes this end bottom in sharp The tip shape at angle；As shown in figure 3, the inclined-plane of this structure makes its end face form a guide surface, extracted on cylinder inner wall to being located at Material forms guiding, improves the entrance efficiency that material enters poke hole, improves the crushing effect of broken net, while in its end face shape The cataclasitlc structure of shape in an acute angle, the bulk materials that can will be effectively adhered on extraction cylinder inner wall are cut away, and prevent the bonding of material Agglomeration is formed, this stuck stirring-head that agglomerates is avoided.

In the present embodiment, flexible scraping article 12, the elasticity is arranged on the opposite end face for extracting cylinder inner wall in the stirring-head Elastic component 13 is provided between scraping article and stirring-head, the elastic component has so that elastic scraping article is pressed on the elasticity for extracting cylinder inner wall Power；Elastic scraping article uses rubber material, and elastic scraping article, which is pressed on, to be extracted cylinder inner wall and rotate with stirring-head, mentions for removing to be adhered to The material on an inner wall is taken, this structure can scrape the bur in the gap between extraction cylinder inner wall and stirring-head, avoid mentioning An inner wall adhered materials are taken to form thermal isolation film, so that extracting cylinder inner wall remains cleaning, heat can be directly conducted on material, Heat conduction efficiency is improved, while avoiding material from being adhered on extraction cylinder inner wall for a long time and burning phenomenon, in the present embodiment, Elastic component uses cylindrically coiled spring, and certainly, the elastic constructions such as resilient sleeve or disk spring can also be used in elastic force, specifically not It is repeating, when elastic scraping article is worn, elastic adhesive tape is being pressed on always by the elastic force of elastic component and is extracted on cylinder inner wall, is led to The elastic force for crossing elastic component realizes the bit shift compensation of elastic scraping article.

In the present embodiment, the stirring-head is provided with mounting groove 14 on the opposite end face for extracting cylinder inner wall, and the elasticity is scraped Item is set in mounting groove；Elastic scraping article is adapted with mounting groove, and elastic scraping article and mounting groove are in axially extending along cylinder is extracted Strip structure, elastic component are set in mounting groove, and it is single that mounting groove realizes elastic scraping article in planned orbit with respect to stirring-head Freedom degree linear slide can effectively avoid since the frictional force between elastic scraping article and extraction cylinder leads to elastic scraping article inconsistent phenomenon Generation.

In the present embodiment, the elasticity scraping article outer end face is in cambered surface compatible with cylinder inner wall is extracted, outer end face setting There is multiple row outwardly convex and the strip scratch 12a axially extending along extraction cylinder；It is acted on by elastic force so that strip scratch is closer With extract cylinder inner wall and contact, improve the efficiency of striking off of elastic scraping article, reduce elastic scraping article and extract the contact area of cylinder inner wall, Reduce the frictional force of the two, the preferred semicircular structure in scratch section, naturally it is also possible to be trapezoidal or other polygonized structures, specifically It is not repeating；

In the present embodiment, the filter device includes and extracts the filter vat 20 of tube inner chamber perforation, is installed in filter vat Temperature holding meanss that portion is used to keep the temperature solvent gas are connected at filter vat bottom inlet for stablizing in filter vat The constant-voltage equipment of pressure and the filter assemblies for being used for filtering solid particles in filter vat are set to, are provided on the filter vat Solvent gas outlet 21, the solvent gas outlet are located above filter assemblies；When the solvent gas extracted in cylinder entered to In lauter tub, to prevent the generation in filter vat with solvent gas condensation caused by temperature difference in extraction cylinder, temperature guarantor is added Device is held, to filter temperature within the barrel and extract temperature in cylinder to keep balancing by temperature holding meanss, or even slightly above extract Temperature in cylinder, so that solvent gas passes through solvent gas outlet and enters next process flow, solvent gas passes through filtering Component filters out the solid particle dust raised by agitating device, improves the recycling quality of solvent gas, works as solvent gas When in into filter vat, since temperature change leads to gas expansion, the gas inside filter vat is kept by the compensation of stable-pressure device Pressure is kept constant in a certain range, and to provide a metastable filtering environment in filter vat, stable-pressure device can be single To valve, check valve is opened by pressure when internal pressure is excessive, release internal gas realizes that pressure balance can also lead to certainly It crosses stable-pressure device and changes volume in filter vat, realize air pressure in a certain range relatively stable.

In the present embodiment, the temperature holding meanss are the cyclic annular heating for being connected to filter vat inner wall and circumferentially extending formation Device；By cyclic structure, so that solvent gas is circumferential uniformly to realize heat transfer, so that gas uniformly heats up, ring-type heating dress Setting to be Electric heating, i.e., heated by the resistance wire of ring-type winding, or steam heating, specifically not superfluous It states；

In the present embodiment, the heating device is heating liner 22 annular in shape, the heating liner and filter vat inner wall Between be encircled into closed heating chamber 23, be provided on the filter vat and run through heating chamber and for injecting the steam of hot steam Import 24 and discharge outlet 25；Preferred steam heating, hot steam is injected into heating chamber and realizes heating, specifically in the present embodiment The media base that steam uses can be for water or solvent boiling point identical or slightly above to be extracted with solvent boiling point to be extracted Medium prevents internal solvent gas from overheating, condensed liquid by the heat supply of steam convenient for controlling its limit high temperature Heating chamber is discharged by discharge outlet.

In the present embodiment, the steam inlet 24 is located at the lower curtate of heating chamber 23 and between the holding of 23 bottom of heating chamber Away from the discharge outlet 25 runs through the lowest part of 23 bottom of heating chamber；The lower curtate is positioned at middle part position on the lower side, so that steaming Vapour runs up to be formed to being evenly heated in heating chamber, can be formed in heating chamber bottom oblique towards the draining of reduction at discharge outlet Slope prevents localized liquid from assembling by drainage slope convenient for the discharge of condensed fluid.

In the present embodiment, the heating liner side wall is in the frustum body reduced from bottom to top, the heating liner side Wall has circumferential evenly distributed multiple vertically extending diversion trenches；By pyramidal structure, so that solvent gas is along tapered slope It runs up, so that solvent gas and heating liner realize sufficient heat exchange, while guaranteeing that solvent gas is slowly evenly heated, Avoid abrupt pressure change caused by temperature jump, diversion trench can both realize the guiding role to gas operation, also increase gas with The contact area for heating liner and gas, improves heat exchanger effectiveness.

In the present embodiment, the filter assemblies include being installed on the lower filter device of heating liner bottom and being installed on to add Upper filter screen 26 at the top of hot liner, the lower filter device include lower filter screen 27 annular in shape and are filled in lower filter screen The baffle 28 of inner circle, the lower filter screen are covered in water conservancy diversion trench bottom；This structure is realized by secondary filtration in solvent gas Solid particulate matter thorough filtering, wherein the mesh of lower filter screen is slightly larger than the mesh of upper filter screen, upper and lower filter screen is suitable Using filter cloth structure and antistatic material is used, due to the blocking of intermediate baffle, solvent gas can only be from cricoid lower filtering Net enters to inside filter vat, and for solvent gas by running up after lower filter screen along diversion trench, this structure guides solvent gas Body is entered to inside filter vat from water conservancy diversion trench bottom and is flowed up along heating liner side wall, by continuous heat exchange, is had Effect avoids that condensation occurs, and improves the extraction efficiency of solvent.

In the present embodiment, the constant-voltage equipment includes being installed at filter vat bottom inlet and axially slidable valve deck 31 And connection valve covers and has to valve deck the pressure maintaining elastic parts of axial elasticity power, be provided at the bonnet central for into The opening of gas；By valve deck, so that forming relatively independent space relative to extraction cylinder inside filter vat, guarantee empty inside filter vat Between it is relatively independent and stablize, when filter vat internal gas expands, air pressure overcomes the elastic force of pressure maintaining elastic component to make valve Lid sliding realizes that the variation of filter vat internal volume is led when to avoid pressure from changing to realize the relatively stable of pressure The back flow of gas of cause is adjusted the opening of valve deck and the proportionate relationship of solvent gas exit cross-section area, is not repeating specifically；

In the present embodiment, the pressure maintaining elastic parts include be threadedly connected to lock ring 29 at filter vat bottom inlet and The pressure maintaining elastic component 30 being connected between lock ring and valve deck, the lock ring are located at below valve deck；Pressure maintaining elastic component equally uses Cylindrically coiled spring, naturally it is also possible to using elastic constructions such as disk springs, not repeat specifically, will locked by pressure maintaining elastic component Ring is linked together with valve deck, and wherein lock ring, which is connected through a screw thread, is removably connected on filter vat, convenient for pressure maintaining elastic parts Integral demounting and maintenance replacement, the solderable acting flange in filter vat bottom realize and connect that the internal diameter of flange is answered by flange and extraction cylinder Outer diameter greater than lock retaining ring is not repeating specifically；

Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model It encloses, should all cover in the scope of the claims of the utility model.

Claims (9)

1. a kind of starch derivative solvent, which extracts, uses filter device, it is characterised in that: including the filtering with dry tube inner chamber perforation Bucket is installed on the temperature holding meanss for being used to keep the temperature solvent gas inside filter vat, is connected to filter vat bottom inlet Place is used for the filter assemblies of filtering solid particles for stablizing the constant-voltage equipment of pressure in filter vat and being set in filter vat, Solvent gas outlet is provided on the filter vat, the solvent gas outlet is located above filter assemblies.

2. starch derivative solvent according to claim 1, which extracts, uses filter device, it is characterised in that: the temperature is kept Device is the annular heating device for being connected to filter vat inner wall and circumferentially extending formation.

3. starch derivative solvent according to claim 2, which extracts, uses filter device, it is characterised in that: the heating device For heating liner annular in shape, closed heating chamber, the filter vat are combined into between the heating liner and filter vat inner wall On be provided with and run through heating chamber and for injecting the steam inlet and discharge outlet of hot steam.

4. starch derivative solvent according to claim 1, which extracts, uses filter device, it is characterised in that: the constant-voltage equipment Including be installed at filter vat bottom inlet and axially slidable valve deck and connection valve are covered with and to valve deck have it is axial The pressure maintaining elastic parts of elastic force is provided with the opening for air inlet at the bonnet central.

5. starch derivative solvent according to claim 3, which extracts, uses filter device, it is characterised in that: the heating liner Inner cavity is in the frustum body reduced from bottom to top.

6. starch derivative solvent according to claim 3, which extracts, uses filter device, it is characterised in that: the steam inlet Positioned at heating chamber lower curtate and keep spacing with heating chamber bottom, the discharge outlet runs through the lowest part of heating chamber bottom.

7. starch derivative solvent according to claim 5, which extracts, uses filter device, it is characterised in that: the heating liner Inner wall has circumferential evenly distributed multiple vertically extending diversion trenches.

8. starch derivative solvent according to claim 7, which extracts, uses filter device, it is characterised in that: the filter assemblies Including the upper filter screen for being installed on the lower filter device of heating liner bottom and being installed at the top of heating liner, the lower filtering Device includes lower filter screen annular in shape and the baffle for being filled in lower filter screen inner circle, and the lower filter screen is covered in diversion trench Bottom.

9. starch derivative solvent according to claim 4, which extracts, uses filter device, it is characterised in that: the pressure maintaining elasticity Component includes the lock ring being threadedly connected at lauter tub bottom inlet and the pressure maintaining elastic component being connected between lock ring and valve deck, The lock ring is located at below valve deck.