CN104321445A - Improved vacuum drier for industrial hides - Google Patents

Abstract

A vacuum drier (1 ) for drying industrial hides (P), comprises: a body having a bearing structure (2), a pair of end uprights (4), substantially vertical guide means, a lower base (6) and an upper cover (7), a plurality of tables (12) for supporting the hides (P) which are adapted to be peripherally and sealingly coupled to define vacuum chambers (15); drive means for vertically moving the tables (12) along the guide means, which are connected to a power unit (16), heating means for the tables (12) for heating the hides, connected to a hydraulic station (17), vacuum means (26) adapted for selective connection to the tables (12) for drawing vapors released from the hides (P), control means (29) for controlling the drive means, the heating means and the vacuum means (26), a suction line for connecting the chambers with the vacuum means (26), a vapor manifold (30) and connection tubing (31). The vacuum means (26), the power unit (16), the hydraulic station (17) and the control means (29) are mounted to the bearing structure (2) in the plan projection of the body. The vapor manifold (30) is directly mounted to an upright (4) near the tables (12).

Description

For the Vacuumdrier of the improvement of industrial hides

Technical field

The present invention is generally applied to leather sector, and namely relates to the Vacuumdrier of industrial hides being used for dry wet limited in preorder as claimed in claim 1.

Background technology

Vacuumdrier for industrial hides is known, this Vacuumdrier generally includes main body, this main body is made up of framework or supporting structure, and this framework or supporting structure support one or more overlapped and substantially horizontal worktable, and during drying leather is positioned on this worktable.

Supporting structure is typically made up of the post that at least two of end of worktable are vertical, and these at least two vertical posts are had vertical guiding piece and are interconnected by lower base and upper cover.

Each worktable vertically can be driven by suitable hydraulic actuator or analogue, so as towards the movable workbench above being positioned at and with the suction chamber of its formation gas-tight seal, dried leather to be closed in this suction chamber.

In order to promote that moisture evaporates from leather, this worktable is by suitable heating devices heat.

In addition, the suction chamber formed by worktable is connected to the vacuum source comprising one or more vacuum pump, and this vacuum source is used for water vapour being drawn through fast the loop comprising at least one manifold, and this at least one manifold is connected to worktable by suitable connecting tube.

Usually, manifold, vacuum pump, hydraulic pressure and pneumatic station and switching motherboard form independent assembly, this independent assembly and body portion from and by a series of flexibility or the pipe of rigidity or power pipeline be connected thereto.

Therefore, generally speaking, this machine covers larger plane domain than this main body, therefore also increases the complicacy of device layout.

In addition, in this prior art is arranged, as such as in EP384196 and GB2152530 disclosed in the applicant, worktable is connected to manifold and metal hose manifold being connected to pump will minimize phase mutual friction to extend their mean lifetime, they poorly bend and have sizable length thus, this will increase the volume of home loop that will be cleared, and along the pressure-losses in this loop.

The other shortcoming of such equipment there is one or more external condensation device in the downstream of worktable, this one or more external condensation device is usually installed to vacuum pump unit and is associated with condensate trap, this condensate trap needs the refrigerated water supplied by refrigerator or cooling tower, therefore relate to high maintenance cost, and frequently change due to oxidation and contact height corrosive water steam and condensation product.

In addition, the existence that edge has these parts in the loop of inevitable safety valve and bypass increases the pressure-losses and relates to the high power consumption of pump, need the long period so that the circulation of worktable is emptying and therefore need the long period so that the leather that is located thereon of drying, this long period can be about one minute simultaneously.

Another shortcoming of prior art conventional dryer is, once this equipment is manufactured, it just must be disassembled into sections fit part to transport and to install in process hides place or working space, thus the main body with worktable is separated from this assembly, this assembly comprises water vapour manifold, one or more condenser and condensate trap, pump unit and various connecting tube, and is used for the metal hose of connecting working table to water vapour manifold.

Therefore, after this partial dismantling, the main body with worktable must be packaged in case, and the assembly comprising pump, hydraulic pressure and oil pressure station and metal hose must be placed in the container be separated.When being transported to installation site, the framework with post must be assembled again and all parts of pump unit must be connected by metal hose, and this needs to regulate and the time consuming process of adjustment.

Summary of the invention

General purpose of the present invention to eliminate for the Vacuumdrier of industrial hides by providing a kind of or at least to reduce above-mentioned shortcoming, and this Vacuumdrier is highly efficiently and relatively cost-saving.

Special object is to provide a kind of drying machine for industrial hides, and this drying machine is highly compact and occupies less space compared with conventional equipment.

Special object in addition of the present invention is to provide a kind of drying machine, and this drying machine has the lower pressure-losses along link circuit, therefore increases useful speed and the efficiency of vacuum unit, and reduction consumes and loop is emptying and the leather drying time.

Another object reduces will be disassembled so that the quantity of the parts transported, and therefore reduces the time and field-installed time of dismantling in factory, and realize the saving of machine operation.

As illustrated better below, these and other objects are realized by the Vacuumdrier of dry industrial hides of being used for limited in such as claim 1, this Vacuumdrier comprises: supporting structure, this supporting structure has: at least one pair of end column with substantially vertical guide arrangement, lower base and upper cover; During drying be used for supporting the multiple overlapped of leather and substantially horizontal worktable, described worktable is suitable for circumferentially and connects to limit corresponding vacuum chamber to suck water vapour from leather hermetically; Be used for moving vertically along described guide arrangement the drive unit of described worktable, this drive unit is connected to power unit; Be used for heating the heating unit associated with worktable of leather, this heating unit is connected to Hydraulic Station; Vacuum unit, this vacuum unit is suitable for optionally being connected to described worktable to draw the water vapour from leather release from described vacuum chamber; Control device, this control device is used for controlling described drive unit, described heating unit and described vacuum unit electrically; Aspiration, this aspiration is used for described vacuum chamber to be connected with described vacuum unit, and this aspiration comprises at least one water vapour manifold, and this at least one water vapour manifold is connected to the described vacuum chamber of all working platform by connecting tube.The feature of this drying machine is, described vacuum unit, described power unit, described Hydraulic Station are integral with described supporting structure with described controller for electric consumption and in the floor projection being placed on machine body instead of in the assembly be separated, at least one water vapour manifold described is directly connected at least one in the described column near described worktable, therefore minimize the length of described connecting tube, described loop length, will by the volume of water vapour drawn and the emptying time of described vacuum chamber.

This layout causes drier structure that is very compact and that tighten, and this will reduce the general plane size of drying machine.

In addition, the smaller length in loop and will be reduced the pressure-losses by the smaller size smaller of the water vapour drawn, increases pumping volume and the reliability of this equipment, reduces power consumption and suction chamber emptying time.

Finally, this structure is reduced at the dismounting of factory, transport and assembling again in installation site, and provides installation cost and time-related saving.

Advantageous embodiment of the present invention is defined according to dependent claims.

Accompanying drawing explanation

From the detailed description of the preferred non-exclusive examples of the Vacuumdrier for industrial hides according to the present invention, other feature and advantage of the present invention will be more obvious, and this embodiment is described to non-limitative example by accompanying drawing, wherein:

Fig. 1 is the overall perspective view being in complete assembled state and having the drying machine of the present invention of protectiveness safety guard;

Fig. 2 is the overall perspective view of the drying machine of the Fig. 1 not having safety guard;

Fig. 3 is the overall perspective exploded view of the drying machine of Fig. 1;

Fig. 4 is the side-view of the drying machine of Fig. 1;

Fig. 5 is the frontview of the drying machine from the Fig. 1 viewed from longitudinal end;

Fig. 6 is the frontview of the drying machine from the Fig. 1 viewed from the longitudinal end relative with the longitudinal end of Fig. 5;

Fig. 7 is the top view of the drying machine of Fig. 1;

Fig. 8 is the view of Fig. 5, wherein for the sake of clarity partly removes some parts;

Fig. 9 is the view of Fig. 5, wherein for the sake of clarity partly removes other parts;

Figure 10 is the skeleton view of the details of Fig. 1;

Figure 11 is the skeleton view of the details of Figure 10;

Figure 12 is the enlarged perspective of the pump unit of drying machine as shown in Figure 1;

Figure 13 is the schematic diagram of pump as shown in Figure 12;

Figure 14 is the sketch in the loop of drying machine of the present invention;

Figure 15 is the side-view of the main body prepared in vanning.

Embodiment

With reference to above-mentioned figure, the drying machine of the present invention that overall by reference number 1 represents is designed to dry flat product especially, has such as stood tanning process and has retained the industrial hides P of high moisture content.

Drying machine 1 comprises the main body be made up of supporting structure 2, and this supporting structure limits longitudinal axes L and covered completely by removable safety guard 3.

In embodiment in the drawings, safety guard 3 has two sliding doors 3 ' at its longitudinal end, and this sliding door can be promoted easily to enter the inside of this machine and not dismantle whole safety guard.

Supporting structure 2 is formed by with lower component substantially: the end column 4,5 of a pair vertical misalignment, the pedestal 6 between column 4,5, and flat Abdeckteil 7.

Preferably, as illustrated better in Fig. 4, column 4,5, together with pedestal 6 is rigidly connected to Abdeckteil 7, thus obtain rigidity and the supporting structure 2 of entirety to form this main body.Preferably, pedestal 6 has feet 6' so that ground is installed.

Preferably, each column 4,5 is made up of a coupled columns 8,9 with Polygons or similar cross-section, and this coupled columns is arranged symmetrically with relative to the perpendicular V through longitudinal axes L and is interconnected by the worktable or rib that are positioned at various height.

Abdeckteil 7 can anchor to column 4,5 and integral with lattice truss 7 ', and this lattice truss is made up of a pair longeron 10,10 ', and this pair longeron is arranged symmetrically relative to perpendicular V and connected by crossbeam, and is connected to column 4,5.

Post 8,9 has the vertical guide arrangement be fixed to the upper, and this vertical guide arrangement is such as made up of high-strength steel guiding piece 11.

One or more substantially horizontal and overlapped identical worktable 12 is supported on above pedestal 6 by supporting structure 2.

Unshowned sliding part is arranged on the lateral end edges of worktable 12, and slide to transmit vertically along guiding piece 11 and be parallel to they self worktable 12, and one at a time by movable workbench to the operating altitude H leaving ground so that the leather P that operator will be dried is placed on the upper surface 13 of worktable.

The basal surface of worktable 12 and Abdeckteil 7 has perimeter seal 14, and this perimeter seal is suitable for cooperating to form corresponding multiple vacuum chambers 15 to the top surface 13 of the worktable be positioned at below, and these vacuum chambers can be opened and seal with being recycled.The negative pressure produced in vacuum chamber 15 can be used for drawing the water vapor discharged from leather P, but also provides following benefit: reduce the pressure of the evaporation of water in leather P and therefore reduce temperature, therefore reducing the thermal stresses on it.

The drive unit be preferably made up of hydro-cylinder (not shown) is arranged for the in check of worktable 12 and moves up or down.As known per se, actuator provides power by power unit 16, and this power unit comprises the control unit of pump and valve operation.

Heating unit is also provided for heating station 12 and accelerates the evaporation of the moisture in leather P.Especially, heating unit can be made up of serpentine tube or labyrinth part substantially, and this serpentine tube or labyrinth part are formed in worktable, are not illustrated, and have been supplied to fluid, and this fluid is preferably hot water, and this hot water is supplied by the loop being connected to Hydraulic Station 17.

The hydraulic pressure heating circuit clearly show that in figure 6 comprises heat exchanger 17 ', and this heat exchanger has: master loop, and this master loop receives steam or another high temperature fluid from pipe 18; And minor loop, this minor loop receives cold water from pipe 19, and this cold water is by pump 20 pumping.

The hot water flowing out interchanger 17' is sent to supply manifold 21 by flexible inlet pipe 22 and then arrives worktable 12, flow through serpentine tube and then flow out worktable 12 by flexible exit pipe 23, and be sent to and discharge manifold 24, it is got back to interchanger 17 ' from this discharge manifold flow by return tube 25.Alternatively, heat exchanger 17 ' can be replaced by the unshowned direct hot water service pipeline for the water from external system.

It should be noted that the heating circuit comprising supply and discharge manifold 21,24 is fixedly secured to column 5.

The water vapour discharged from leather P is drawn by vacuum chamber 15 by vacuum unit (being expressed as 26 generally).

In preferred non-limiting example, vacuum unit 26 comprises the pump unit be made up of two pumpss in series, that is, be connected in series to high-performance lobe pump or the lobe pump 27 of dry spiral pump 28.

Lobe pump 27 for having the type of internal by-pass and integrated inverse device, according to swabbing pressure, can be balanced by the automatic elastic of by-pass valve 27 ', and permission opening is suitable for the pressure differential deltap p between the upstream and downstream of maximum performance pump.

The operation of all pumps of this machine, valve, hydraulic pressure and pneumatic station is controlled by switching motherboard 29, and this switching motherboard is connected to contact screen by wifi possibly, and this contact screen can be integrated in the safety guard 3 of main body.

The suction chamber 15 of worktable 12 is connected to pump unit 26 by aspiration.

This aspiration comprises at least one water vapour manifold 30, and this at least one water vapour manifold is connected to the suction chamber 15 of worktable by corresponding connecting tube 31.

Preferably, two water vapour manifolds 30 are set to be connected to connecting tube 31.

Suitably, as clearlying show that in Figure 10 and 11, pipeline 31 is connected to suction chamber 15 by the offside compartment 32 near the longitudinal edge that is formed in each worktable 12.

That the side compartment 32 of each worktable 12 has a series of alignment on their roof and the hole 33 be evenly arranged is to ensure that the fluid between described compartment 32 and suction chamber 15 is communicated with, and this suction chamber is formed in top surface 13 and between the basal surface of worktable above.

Each compartment 32 has junctor 34 to be connected to corresponding pipe 31 at its longitudinal end.In addition, water vapour manifold 30 is connected to pump unit 26 by suction channel 35.Therefore, from leather P discharge and the water vapour be collected in vacuum chamber 15 be drawn through hole 33 and flow in side compartment 32, they to be extracted by pipeline 31 from this side compartment and are sent to water vapour manifold 30; Water vapour manifold is connected to pump unit 26 by suction tube 35.

Advantageously, each compartment 32 holds condenser 36, and this condenser has the longitudinal direction tube bank 37 for circulating chilled water.Therefore, the water vapour passing hole 33 produced in vacuum chamber is drawn onto in compartment 32, and in this compartment, they flow in the tube bank 37 of condenser 36, therefore condensation and being deposited in compartment.

Suitably, except for except the entrance and exit junctor of water coolant, each compartment 32 has corresponding vent pipe 38 in the end near junctor 34, and free end is equipped with self-acting valve 39.Valve 39 usually cuts out and automatically opens when each vacuum chamber 15 is opened and discharged vacuum, so that leather P is placed on the surface 13 during suction operation.

Easily, as being clearly shown that in Fig. 9, be slidably received in the again evaporation of sidepiece with the condensation product preventing from being separated that condensation product vent pipe 38 in two substantially vertical downspout conductors and their corresponding self-acting valve 38 are disposed in worktable 12.

Characteristic feature of the present invention is, each aspiration manifold 13 is directly installed to one of them column of supporting structure 2, is installed to column 4 especially, and near worktable 12, to minimize the length of connecting tube 31.

In order to this object, connecting tube 31 can be the low rigid and flexible pipe formed by high-abrasive material, to allow with little bend radius and to reduce the distance between entrance and exit connection, with limit aspiration circuit length, will time needed for the volume of water vapour drawn and emptying suction chamber 15, therefore pumping volume is higher, and the efficiency of this equipment is higher.

Alternatively, connecting tube can be rigidity or semirigid, and has such as telescoping ripple expansion pipe, to be optionally aligned in this compartment being formed in junctor in worktable or aperture (not shown).

In addition, vacuum unit 26, water vapour manifold 30, aspiration circuit, oil pressure all in the floor projection of main body, be stably installed to supporting structure 2 with the station 16 and 17 of hydraulic pressure, to reduce the general plane size of drying machine.

Especially, pump 27,28, oil pressure and Hydraulic Station 16,17, and trip switch plate 29 is installed to the lattice truss 7 ' above Abdeckteil 7, the top surface of this lattice truss limits walkway surface so that the maintenance of any needs of all stations and control device.

Easily, pump unit 27,28 is by being connected to water vapour manifold 30 with column 4 all-in-one-piece suction channel 35.Each water vapour manifold 30 is substantially vertical and has the multiple junctors 41 for connecting tube 31 be evenly arranged along its vertical scope.

In addition, each suction tube 35 is also substantially vertical and bottom it, has whirlwind condensate trap 42, and this whirlwind condensate trap is connected to condensate collection vessel 43.

Finally, vertical suction tube 35 is connected to pump unit 26 by level pipe 44,45.

Due to the vertical layout of suction tube 35, water vapour aptitude, in upwards rising towards pump unit, therefore increase the flow rate in loop, and condensation product tends to downward precipitation, therefore promotes the separation of the moisture comprised in water vapour.

And owing to using the valve of very small number, junctor to be connected with throttling valve formation, the pressure-losses therefore along vacuum loop significantly reduces.

In conjunction with the less evacuation volume in loop, the efficiency of the raising in loop allows to provide the throughput capacity of the shorter suction time of drying machine, the power consumption of reduction, the noise of reduction and raising.

Due to this structure, obtain following benefit:

Relative to normal 900m ³the higher pumping volume of/h, that is, about 2500m ³/ h;

Whole drying machine reduces the power consumption of about 20%;

Pump unit reduces the power consumption of about 37%;

Reduce the worktable emptying time of about 60%;

For the longer life of vacuum and the wear-resistant flexible pipe for hot and cold water;

The elimination of liquid ring pump and working oil;

Lower noise;

Simplification for the loop of vacuum, heating liquid and cooling liqs reduces significantly;

Increase by the drying capacity of about 37%.

In a preferred embodiment, post 8,9 is made up of two parts, it is integral with pedestal 6 that these two parts are upper part 8', 9 ' and low portion 8 ", 9 ", and this upper part and low portion are connected by junctor 46, and upper part 8', 9' are removable and low portion 8 ", 9 ".

Therefore, by dismantling upper part 8', the 9' of post, all working platform 12 is packaged on pedestal 6, Abdeckteil 7 and overall lattice truss 7'(are had pump unit and various station and control device) be placed on it, keep simultaneously all loops and pipe be connected and avoid any dismounting and later assembly operation, drying machine can prepare transport.

In sea borne situation, this assembly will be placed in case usually, and the upper part of post, safety guard can be placed in the container be separated with all annexes.In the situation of transporting by land; the assembly be made up of pedestal, worktable bag, Abdeckteil and lattice truss (have various auxiliary and control unit, stand and loop) will be protected by plastic wrapping; this plastic wrapping and then covered by plate, and the upper part of post, safety guard and other annex will be arranged in special carrier vehicle.

Field assembly only will exist only in this post of assembling, recover guiding piece and install external protection guards, and this shortens the settling time of about 35% by providing.

In the following claims in invention disclosed principle, drying machine of the present invention allows many changes and variant.When not departing from scope of the present invention, its all details can be replaced by other technically equivalent parts, and material can change according to different needs.

Although with particular reference to drawings describing this drying machine, the Reference numeral quoted in the disclosure and claim is only for having understood the present invention better and should not being intended to limit claimed scope by any way.

Claims (12)

1. one kind is used for the Vacuumdrier (1) of dry industrial hides (P), and described Vacuumdrier comprises:

Main body, described main body comprises supporting structure (2), and described supporting structure has: at least one pair of end column (4) with substantially vertical guide arrangement (11); Lower base (6) and upper cover (7);

Multiple overlapped and substantially horizontal worktable (12), described worktable is designed between the dry epoch of described leather, support described leather (P), and described worktable with each other and be circumferentially tightly connected to limit corresponding vacuum chamber (15) with described Abdeckteil (7), described vacuum chamber is used for drawing the water vapour of releasing from described leather (P);

Running gear that provide power by power supply unit (16), that be used for vertically moving along described guide arrangement (11) described worktable (12);

The heating unit associated with described worktable (12), described heating unit is used for heating described leather (P) and is connected to heating unit (17);

Vacuum unit (26), described vacuum unit is designed to optionally be connected to described worktable (12) to draw the water vapour of releasing from described leather (P) from described vacuum chamber (15);

Control device (29), described control device is used for controlling described running gear, described heating unit and described vacuum unit (26);

Aspiration, described aspiration is used for described vacuum chamber (15) to be connected to described vacuum unit (26), described aspiration has at least one water vapour manifold (30), and at least one water vapour manifold (30) described is connected to the described vacuum chamber (15) of described worktable (12) by connecting tube (31);

It is characterized in that, described vacuum unit (26), described power supply unit (16), described heating unit (17) and described control device (29) are installed to described supporting structure (2) in the floor projection of described machine body, instead of in independent assembly, at least one water vapour manifold (30) described is directly connected at least one in the described column (4) of described worktable (12), therefore the length of described connecting tube (31) is minimized, the length in loop, will by the volume of described water vapour drawn and the emptying time of described vacuum chamber (15).

2. drying machine as claimed in claim 1, wherein said vacuum unit (26) is by being connected at least one water vapour manifold (30) described with described at least one column (4) at least one connecting tube (35) integrally.

3. drying machine as claimed in claim 1, wherein for each worktable (12) its longitudinal edge close, described aspiration comprises an offside seat (32), a described offside seat is provided with multiple hole (33) so that from described vacuum chamber (15) pump up water steam, and a described offside seat has the junctor (34) for connecting tube (31) at an one longitudinal end.

4. drying machine as claimed in claim 1, at least one water vapour manifold (30) wherein said is substantially vertical, and have equally distributed along its vertical scope, for multiple joints (41) of described connecting tube (31).

5. drying machine as claimed in claim 2, wherein said at least one suction tube (35) has substantially vertical part, and described substantially vertical part is connected at least one water vapour manifold (30) described and condensate trap (42).

6. drying machine as claimed in claim 1, wherein a pair water vapour manifold (30) is disposed in the position relative to median vertical plane (V) substantial symmetry through described longitudinal axis (L), to be transmitted in the water vapour collected in longitudinal side seat (32) of described worktable (12), and described right water vapour manifold (30) and then be connected to a pair supply-pipe (35), described a pair supply-pipe relative to described vertical mid-plane (V) to be arranged on like the relation object of substantial symmetry on identical column (4).

7. drying machine as claimed in claim 3, each of wherein said side seat (32) has outlet hose (38) at a longitudinal end, so that the condensation product that emptying corresponding condenser (36) produces, described outlet hose (38) is provided with self-acting valve (39) in end, be collected in described side seat (32) and the condensation product transmitted in substantially vertical collection groove (40) to discharge.

8. drying machine as claimed in claim 1, wherein said connecting tube (31) is flexible and is made up of low lost material, be suitable for the height multi-directional bending allowing described pipeline, to reduce their connecting length when each side seat (32) connects with corresponding water vapour manifold (30).

9. drying machine as claimed in claim 1, wherein said heating unit comprises the serpentine tube be arranged in each worktable (12), wherein by being connected to the flexible duct supply heating fluid of suitable heat exchanger (17').

10. drying machine as claimed in claim 1, the described running gear of wherein said worktable (12) comprises at least one the multiple hydro-cylinder supplied by described power supply unit (16).

11. drying machines as claimed in claim 1, wherein said power supply unit (16) and described control device (29) are installed to the upper surface (7 ') of described Abdeckteil (7), described upper surface limits the walking surface of maintenance and controllers, and described heating unit (17) is installed to described at least one column (4).

12. drying machines as claimed in claim 1, each of wherein said column (4,5) is formed by least one pair of pillar (8,9), at least one pair of pillar described each respectively by two parts (8 ', 8 ", 9 ', 9 ") make, described two parts are upper part (8 ', 9 ') and low portion (8 ", 9 "), upper part (8 ', 9 ') can respectively with low portion (8 ", 9 ") be separated with described Abdeckteil (7), described low portion (8 ", 9 ") with described pedestal (6) integrally, described upper part (8 ", 9 ") be designed to be convenient to be removed, and described worktable (12) and described Abdeckteil (7) are designed to be convenient to compacted to provide overall main body to transport, retain other connections all constant to minimize the settling time.