CN217869490U - Steam preshrinking machine - Google Patents

Abstract

The utility model belongs to the technical field of the textile machinery technique and specifically relates to a steam preshrinking machine is related to, the power distribution box comprises a box body, cloth feeding port and cloth outlet have been seted up in proper order along cloth direction of delivery on the box, be provided with the work feed device in the box, steam device, drying device and cooling device have set gradually along cloth direction of delivery in the box, the work feed device includes drive roll, driven voller, conveyer belt and drives drive roll pivoted driving piece, the conveyer belt sets up between drive roll and driven voller, be provided with two barrier plates that extend along cloth direction of delivery on the box inner wall, two the width direction of barrier plate along the cloth distributes, the barrier plate is located conveyer belt top and bottom surface and conveyer belt upper surface contact. This application is through the barrier plate of conveyer belt both sides with the cloth restriction on the conveyer belt to reduce the cloth and deviate conveyer belt surface and lead to the possibility that the cloth preshrinks the effect and reduce.

Description

Steam preshrinking machine

Technical Field

The application relates to the technical field of textile machinery, in particular to a steam preshrinking machine.

Background

A preshrinking machine, also called antishrinking machine, is a device for preshrinking and finishing textile machinery and is designed according to the thermal shrinkage principle of fibers. Due to the directionality of the scales of the wool fibers, the wool fibers can be felted under the conditions of certain temperature, humidity, extrusion force and the like, and severe over shrinkage on the size can be caused by overhigh temperature or overlarge extrusion force, so that the tension-free pre-shrinkage condition needs to be implemented in the pre-shrinkage process of the wool fabrics, and the steam pre-shrinkage machine is equipment for pre-shrinkage under the states of no pressurization and no stretching of the fabrics.

The utility model discloses a chinese utility model patent that bulletin number is CN205893676U discloses a modified steam preshrinking machine, construct and receive cloth mechanism including feeding cloth mechanism, preshrinking, the preshrinking mechanism includes first box, be provided with guipure work feed device in the first box, guipure work feed device includes drive roll, driven voller and the guipure of parcel outside drive roll and driven voller, and the motor that sets up on the drive roll drives the drive roll and rotates to drive the cloth and carry, guipure work feed device top along cloth direction of delivery set gradually atomizer, drying apparatus and cooler. The steam preshrinking machine has high automation degree and can meet the production requirement of tension-free preshrinking of fabrics.

However, when the cloth is placed on the mesh belt cloth feeding device, because the cloth is freely placed on the mesh belt, when the advancing angle of the cloth deviates, an included angle exists between the conveying direction of the cloth and the length direction of the cloth, so that the cloth can slide out of the surface of the mesh belt in the conveying process, and the cloth pre-shrinking effect is reduced.

SUMMERY OF THE UTILITY MODEL

In order to reduce the possibility that cloth preshrinking effect is reduced due to cloth deviation, the application provides a steam preshrinking machine.

The application provides a steam preshrinking machine adopts following technical scheme:

the utility model provides a steam preshrinking machine, includes the box, it advances cloth mouth and goes out the cloth mouth to have seted up in proper order along cloth direction of delivery on the box, be provided with work feed device in the box, set gradually steam device, drying device and cooling device along cloth direction of delivery in the box, work feed device includes drive roll, driven voller, conveyer belt and drives drive roll pivoted driving piece, the conveyer belt sets up between drive roll and driven voller, be provided with two barrier plates along the extension of cloth direction on the box inner wall, two the width direction of barrier plate edge cloth distributes, the barrier plate is located conveyer belt top and bottom surface and conveyer belt upper surface contact.

Through adopting above-mentioned technical scheme, after the cloth got into the box from advancing the cloth mouth, the lower surface of cloth and the last surface contact of conveyer belt, and start the driving piece, the driving piece drives the drive roll and rotates, it rotates to drive the driven voller again, make the cloth carry on the conveyer belt, and through the steam device in the box, drying device and cooling device preshrunk the cloth, derive the box with the cloth from a cloth mouth at last, when the cloth was on the conveyer belt upper surface, the barrier plate of cloth both sides restricts the cloth on the conveyer belt surface, thereby reduce the possibility of the skew conveyer belt of cloth, thereby reduce because the cloth skew leads to the possibility that the effect of preshrunk reduces.

Optionally, a supporting plate is arranged on the inner wall of the box body, the blocking plate is arranged on the supporting plate in a sliding mode along the width direction of the cloth, and an adjusting assembly used for driving the blocking plate to slide on the supporting plate and positioning the position of the blocking plate is arranged between the blocking plate and the supporting plate.

Through adopting above-mentioned technical scheme, when the width of cloth changes, can slide the barrier plate along the backup pad, drive the barrier plate and be close to or keep away from the barrier plate center for the width of cloth is more fit for to the scope between the barrier plate of cloth both sides, drives the barrier plate through adjusting part simultaneously and slides and fix a position, improves the barrier plate and to the spacing effect of cloth width direction.

Optionally, the adjusting assembly includes a first rotating motor and a screw rod, a sliding groove extending along the cloth width direction is formed in the upper surface of the supporting plate, the screw rod is rotatably arranged in the sliding groove, the blocking plate is slidably arranged in the sliding groove and is in threaded connection with the screw rod, and the rotating motor is located on one side of the blocking plate, which faces away from the conveying belt, and an output shaft of the rotating motor is coaxially connected with the screw rod.

Through adopting above-mentioned technical scheme, when the distance between two barrier plates needs to be adjusted, start first rotation motor, first rotation motor drives the screw rod and rotates for the barrier plate slides along cloth width direction in the groove that slides, thereby conveniently adjusts the distance between two barrier plates.

Optionally, a blocking belt is arranged on the blocking plate, the blocking belt is parallel to the conveying belt, the surface of the cloth at the bottom of the blocking belt is in contact with the surface of the cloth at the bottom of the blocking belt, and a transmission assembly for driving the blocking belt to synchronously transmit with the conveying belt is arranged between the blocking plate and the blocking belt.

Through adopting above-mentioned technical scheme, when the cloth was carried on the conveyer belt surface, stop the both sides contact of area and cloth, and stop area and conveyer belt synchronous drive under drive assembly's drive, reduce the possibility that the cloth breaks away from between stop area and the conveyer belt to reduce the possibility of cloth skew conveyer belt.

Optionally, a mounting groove extending along the cloth conveying direction is formed in the bottom surface of the blocking plate, the blocking plate is back to the bottom surface of one side of the center of the conveying belt to be in surface contact with the conveying belt, the transmission assembly comprises a driving wheel, a driven wheel and a second rotating motor, the driving wheel and the driven wheel are arranged on the blocking plate in a rotating mode, the driving wheel and the driven wheel are distributed in the mounting groove along the cloth conveying direction, the blocking belt is a synchronous belt, the blocking belt is connected to the driving wheel and the driven wheel at the same time, and the second rotating motor is arranged on the blocking plate and an output shaft of the second rotating motor is coaxially arranged with the driving wheel.

Through adopting the above technical scheme, the barrier plate blocks the cloth on the conveyer belt at the width direction of cloth, when the second rotates the motor and rotates, drive the barrier belt and rotate along with the action wheel and follow the driving wheel, and with conveyer belt synchronous transmission, the both sides of cloth convey between barrier belt and conveyer belt, reduce the gliding possibility of cloth through the friction between barrier belt and the cloth, the barrier plate in the outside simultaneously and conveyer belt surface contact, thereby block the cloth between two barrier plates, and push down the border of cloth through the barrier belt, reduce the possibility of cloth skew and fold, thereby improve the preshrinking effect of cloth.

Optionally, the outer wall of the blocking belt is provided with a plurality of raised lines which are uniformly distributed along the length direction of the blocking belt.

Through adopting above-mentioned technical scheme, through the friction between the sand grip increase stop band of evenly distributed on the stop band outer wall and the cloth, reduce the cloth and break away from the possibility of stop band and conveyer belt to it produces the possibility that the fold leads to the cloth effect of preshrinking to reduce the cloth.

Optionally, an air suction device is arranged on the box body and comprises a fan, an air suction cover and an air suction pipe, the fan is arranged on the box body, the air suction cover is arranged on the inner wall of the box body and located above the cloth, one end of the air suction pipe is communicated with an air outlet of the fan, and the other end of the air suction pipe is communicated with the air suction cover.

Because steam preshrinking machine is through steam device for the cloth surface increase suitable steam thereby give wet to the cloth, nevertheless upwards move when meeting cold the easy condensation become the globule and drip, probably drip on the cloth surface for the moisture that local cloth contains is too much, thereby influences the preshrinking effect of cloth.

Through adopting above-mentioned technical scheme, when steam device given wet to the cloth, open the fan for the fan absorbs the unnecessary steam of cloth top, and outside partly steam was along with the exhaust box of suction tube, another part steam was attached to the inner wall of cover that induced drafts, and along the landing of inside slope inner wall, thereby reduces the possibility that the drop of water drips on the cloth.

Optionally, it upwards extends's reservoir to induced draft to cover to be provided with along the cover inboard that induced drafts, it is provided with the drainage tube to cover to absorb water, drainage tube and reservoir intercommunication, the one end setting in the box outside that the cover was inhaled to the drainage tube was kept away from.

Through adopting above-mentioned technical scheme, the little drop of water of agglomerating on the cover inner wall that induced drafts is along with the inner wall landing to the landing is in the reservoir of induced draft cover below, and the drainage tube through with the reservoir intercommunication again flows out the box, reduces the drop of water and follows the possibility that the cover edge drips on the cloth that induced drafts.

Optionally, the liquid storage tank is arranged obliquely downwards along the cloth conveying direction, and the communication position of the air suction pipe and the liquid storage tank is located at the lowest end of the liquid storage tank.

Through adopting above-mentioned technical scheme, the reservoir slope installation for liquid in the reservoir is followed the eminence to low landing to the drainage tube outflow box from low, improves the reservoir in liquid to the drainage tube convenience that flows, thereby improves the drainage efficiency of reservoir and drainage tube.

In summary, the present application includes at least one of the following beneficial technical effects:

1. two blocking plates are arranged in the box body, the lower surfaces of the two blocking plates are in contact with the upper surface of the conveying belt, and the cloth is limited on the conveying belt along the width direction by the two blocking plates, so that the possibility that the cloth deviates from the conveying belt to reduce the pre-shrinking effect is reduced;

2. the blocking plate is slidably mounted on the supporting plate and can slide and be positioned along the width direction of the cloth through the adjusting assembly, so that the blocking range of the blocking plate is more proper;

3. the blocking belt is installed on the blocking plate, and the two sides of the cloth are located between the blocking belt and the conveying belt, so that the possibility that the cloth preshrinking effect is reduced due to the fact that wrinkles appear in the cloth conveying process is reduced.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a sectional view of the entire structure in the embodiment of the present application.

Fig. 3 is a schematic view of an installation structure of the supporting plate and the blocking plate in the embodiment of the present application.

Fig. 4 is an enlarged view of a in fig. 3.

Description of reference numerals: 1. a box body; 11. a cloth inlet; 12. a cloth outlet; 13. a support plate; 131. a sliding groove; 14. a blocking plate; 141. a vertical portion; 142. a sliding part; 143. an installation part; 144. mounting grooves; 2. a cloth feeding device; 21. a drive roll; 22. a driven roller; 23. a conveyor belt; 24. a drive member; 3. a steam device; 4. a drying device; 5. a cooling device; 6. an air suction device; 61. a fan; 62. an air suction pipe; 63. an air suction hood; 64. a liquid storage tank; 65. a drainage tube; 7. an adjustment assembly; 71. a first rotating electric machine; 72. a screw rod; 8. a transmission assembly; 81. a second rotating motor; 82. a driving wheel; 83. a driven wheel; 84. a barrier tape; 841. and (6) convex strips.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses steam preshrinking machine. Referring to fig. 1 and 2, the cloth feeding device comprises a box body 1, a cloth inlet 11 and a cloth outlet 12 are respectively formed in two ends of the box body 1, a steam device 3, a drying device 4 and a cooling device 5 are sequentially installed at the bottom of the box body 1 along a cloth conveying direction, a cloth feeding device 2 is further installed in the box body 1, and the cloth feeding device 2 is located above the steam device 3, the drying device 4 and the cooling device 5.

Steam device 3 includes the atomizer, the atomizer is located 2 below of work feed device and is close to into cloth mouth 11, drying device 4 includes the drying apparatus, the drying apparatus is located between atomizer and the work feed mouth 12 and is located 2 below of work feed device, the drying apparatus dries the cloth that the atomizer spouts, cooling device 5 includes the air-cooler, the air-cooler is located between drying apparatus and the work feed mouth 12 and is located 2 below of work feed device, the wind gap of air-cooler upwards aims at the cloth and blows, cool down the cloth, thereby accomplish the preshrinking of cloth.

The cloth feeding device 2 comprises a driving roller 21, a driven roller 22, a conveying belt 23 and a driving part 24, the driving part 24 comprises a driving motor, the driving roller 21 and the driven roller 22 are distributed along a cloth conveying direction and extend along a cloth width direction, the driving roller 21 and the driven roller 22 are rotatably installed on the box body 1, the driving motor is installed on the outer wall of the box body 1, an output shaft of the driving motor extends into the box body 1 and is coaxially connected with the driving roller 21, the conveying belt 23 is installed between the driving roller 21 and the driven roller 22, air holes for steam to penetrate are uniformly formed in the conveying belt 23, cloth enters the box body 1 from a cloth inlet 11 and is placed on the conveying belt 23, when the driving motor is started, the driving roller 21 rotates to drive the conveying belt 23 and the driven roller 22 to rotate, so that the cloth is conveyed on the conveying belt 23, and is wetted, dried and cooled by an atomizer, a dryer and an air cooler below the conveying belt 23, and the cloth is preshrinked, and accordingly.

Referring to fig. 2 and 3, two horizontal support plates 13 are mounted on the inner wall of the box body 1, the two support plates 13 are distributed on two inner side walls of the box body 1 along the width direction of the cloth, the two support plates 13 extend along the conveying direction of the cloth, a sliding groove 131 extending along the width direction of the cloth is formed in the upper surface of each support plate 13, the vertical cross section of each sliding groove 131 is trapezoidal, and a blocking plate 14 sliding along the width direction of the cloth is mounted in each sliding groove 131.

Referring to fig. 3 and 4, the blocking plate 14 includes a vertical portion 141, an installation portion 143, and a sliding portion 142, the sliding portion 142 is slidably installed in the sliding groove 131 and is in threaded connection with the lead screw 72, the vertical portion 141 is integrally installed between the installation portion 143 and the sliding portion 142, the bottom surface of the installation portion 143 is in contact with the upper surface of the conveyor belt 23, a vertical installation groove 144 is formed in the lower surface of the installation portion 143, the installation is performed, the installation groove 144 penetrates through two ends of the installation portion 143 in the cloth conveying direction, the installation portion 144 divides the lower end of the installation portion 143 into two parts, the bottom surface of one part away from the center of the conveyor belt 23 is in contact with the upper surface of the conveyor belt 23, a blocking belt 84 and a transmission assembly 8 are installed in the installation groove 144, the blocking belt 84 is a synchronous belt, a plurality of protruding strips 841 are installed on the outer wall of the blocking belt 84 and are uniformly distributed on the blocking belt 84 in the length direction of the blocking belt 84, three rows of the protruding strips 841 are distributed in the width direction of the blocking belt 84, and the blocking belt 84 is driven by the transmission assembly 8 and synchronously transmitted with the conveyor belt 23.

Referring to fig. 3, the adjusting assembly 7 includes a first rotating motor 71 and a screw rod 72, the screw rod 72 is rotatably installed on the support plate 13 and located in the sliding groove 131, the screw rod 72 extends along the width direction of the fabric and is in threaded connection with the blocking plate 14, the first rotating motor 71 is installed on the outer wall of the box 1, an output shaft of the first rotating motor 71 extends into the box 1 and is coaxially connected with the screw rod 72, when the first rotating motor 71 is started, the screw rod 72 rotates, so that the blocking plate 14 slides along the sliding groove 131, and the blocking plate 14 is driven to be close to or far away from the center of the conveyor belt 23.

The transmission assembly 8 comprises a driving wheel 82, a driven wheel 83 and a second rotating motor 81, the driving wheel 82 and the driven wheel 83 are rotatably installed on the installation portion 143 and are located in the installation groove 144, the driving wheel 82 and the driven wheel 83 are distributed along the conveying direction of the cloth, the second rotating motor 81 is installed on the installation portion 143 and is located on one side surface of the installation portion 143, which is opposite to the conveying belt 23, an output shaft of the second rotating motor 81 is coaxially connected with the driving wheel 82, when the second rotating motor 81 is driven, the second rotating motor 81 drives the driving wheel 82 to rotate, the driving wheel 82 and the blocking belt 84 drive the driven wheel 83 to rotate, so that the blocking belt 84 and the conveying belt 23 synchronously rotate, when the cloth is placed on the conveying belt 23, a convex strip 841 on the blocking belt 84 presses two sides of the cloth, and the convex strip 841 presses the cloth on the conveying belt 23, the convex strip presses the cloth on the conveying belt 23, so as to increase friction between two sides of the cloth and the conveying belt 23, when the cloth is conveyed on the conveying belt 23, the cloth is reduced, the cloth is separated from the blocking belt 84 and the conveying belt 23, so as to reduce the possibility of the occurrence of wrinkles on the conveying belt 23, and reduce the possibility of the cloth, thereby reducing the possibility of reduction effect of cloth pre-shrinking.

Referring to fig. 1 and 2, install induced draft device 6 in the box 1, induced draft device 6 includes fan 61, cover 63 and aspiration channel 62 induced draft, fan 61 is installed on the box 1 outer wall and is located box 1 top, the horizontal cross-section of cover 63 bottom induced draft is square, cover 63 induced draft is installed in box 1 inside and is located conveyer belt 23 top, cover 63 induced draft is parallel all around with box 1, the four sides of cover 63 induced draft is downward and extend all around along box 1 center slope, the one end of aspiration channel 62 is connected on cover 63's top and with cover 63 inner wall intercommunication induced draft, the other end stretches out box 1 and is connected with the air outlet of fan 61.

A liquid storage tank 64 is arranged on the inner side wall below the air suction hood 63, the liquid storage tank 64 inclines downwards in the direction from the cloth inlet 11 to the cloth outlet 12, a drainage pipe 65 is arranged between the liquid storage tank 64 and the box body 1, one end of the drainage pipe 65 is connected to the lowest end of the liquid storage tank 64 and communicated with the liquid storage tank 64, and the other end of the drainage pipe 65 extends out of the box body 1.

The implementation principle of a steam preshrinking machine in the embodiment of the application is as follows:

the cloth gets into box 1 from the cloth inlet 11 department of box 1 to place on conveyer belt 23, start driving motor, driving motor drives drive roll 21 and rotates, drive roll 21 and driven voller 22 drive conveyer belt 23 conveying, make the cloth of conveyer belt 23 top carry along with conveyer belt 23, open atomizer, drying apparatus and air-cooler, make the cloth absorb steam under the effect of atomizer, dry under the effect of drying apparatus, and cool off under the effect of air-cooler, thereby accomplish the cloth preshrinking.

When the cloth is conveyed above the conveyor belt 23, the blocking plates 14 on both sides of the conveyor belt 23 are in contact with the upper surface of the conveyor belt 23, so that the cloth is limited between the two blocking plates 14, the blocking belts 84 arranged on the blocking plates 14 are driven by the second rotating motor 81, the driving wheel 82 and the driven wheel 83 to be transmitted together with the conveyor belt 23, and the raised strips 841 on the surfaces of the blocking belts 84 are pressed on the cloth, so that the friction between the cloth and the conveyor belt 23 and the blocking belts 84 is increased, and the possibility of the cloth wrinkling in the transmission process is reduced.

When the distance between the two blocking plates 14 is not suitable for the width of the cloth, the first rotating motor 71 is started, the first rotating motor 71 drives the screw rod 72 to rotate, so that the blocking plates 14 slide towards or away from the center of the conveyor belt 23 along the sliding grooves 131 on the supporting plate 13, and the distance between the two blocking plates 14 is suitable for the width of the cloth.

After the atomizer is opened, can open fan 61 outside box 1 again for fan 61 inhales the steam of box 1 top or adsorbs on the surface of cover 63 that induced drafts through aspiration channel 62 and induced drafts cover 63, thereby reduces steam and meets the integrated drop of condensation in box 1 inside, thereby the possibility of drippage on the cloth.

After the steam adsorbed on the inner wall of the air suction cover 63 is condensed, water drops slide into a liquid storage tank 64 at the edge of the air suction cover 63 along the inner wall of the air suction cover 63, flow to the lowest end of the liquid storage tank 64 through the inclined liquid storage tank 64, and finally flow out of the box body 1 from the drainage pipe 65.

The above is the preferred embodiment of the present application, and the protection scope of the present application is not limited thereby, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. The utility model provides a steam preshrinking machine, includes box (1), cloth feeding port (11) and cloth discharging port (12) have been seted up in proper order along cloth direction of delivery on box (1), be provided with work feed device (2) in box (1), steam device (3), drying device (4) and cooling device (5) have set gradually along cloth direction of delivery in box (1), work feed device (2) include drive roll (21), driven voller (22), conveyer belt (23) and drive roll (21) pivoted driving piece (24), conveyer belt (23) set up between drive roll (21) and driven voller (22), its characterized in that: the cloth conveying device is characterized in that two blocking plates (14) extending along the cloth conveying direction are arranged on the inner wall of the box body (1), the two blocking plates (14) are distributed along the width direction of cloth, and the blocking plates (14) are located above the conveying belt (23) and are in surface contact with the upper surface of the conveying belt (23).

2. The steam pre-compressor as claimed in claim 1, wherein: be provided with backup pad (13) on box (1) inner wall, barrier plate (14) slide along cloth width direction and set up on backup pad (13), be provided with between barrier plate (14) and backup pad (13) and be used for driving barrier plate (14) and slide and fix a position adjusting part (7) of the position of barrier plate (14) on backup pad (13).

3. The steam pre-compressor as claimed in claim 2, wherein: adjusting part (7) include first rotation motor (71) and lead screw (72), slip groove (131) that extend along cloth width direction are seted up to backup pad (13) upper surface, lead screw (72) rotate to be set up in slip groove (131), stopper plate (14) slide set up in slip groove (131) and with lead screw (72) threaded connection, first rotation motor (71) are located one side that stopper plate (14) back to conveyer belt (23) and the output shaft and lead screw (72) coaxial coupling of first rotation motor (71).

4. The steam pre-compressor as claimed in claim 2, wherein: the cloth conveying device is characterized in that a blocking belt (84) is arranged on the blocking plate (14), the blocking belt (84) is parallel to the conveying belt (23), the surface of the cloth at the bottom of the blocking belt (84) is in contact with the surface of the cloth, and a transmission assembly (8) used for driving the blocking belt (84) to be in synchronous transmission with the conveying belt (23) is arranged between the blocking plate (14) and the blocking belt (84).

5. The steam pre-compressor as claimed in claim 4, wherein: the utility model discloses a cloth conveying belt, including baffle plate (14), drive assembly (8), drive wheel (82), driven wheel (83) and second rotation motor (81), baffle plate (14) bottom surface is seted up along cloth direction of delivery's mounting groove (144), baffle plate (14) back to one side bottom surface and conveyer belt (23) surface contact at conveyer belt (23) center, drive wheel (82) and driven wheel (83) rotate and set up on baffle plate (14), drive wheel (82) distribute in mounting groove (144) along cloth direction of delivery with driven wheel (83), baffle belt (84) are the hold-in range, baffle belt (84) are connected simultaneously on drive wheel (82) and driven wheel (83), second rotation motor (81) set up on baffle plate (14) and the output shaft and drive wheel (82) coaxial coupling of second rotation motor (81).

6. The steam pre-compressor as claimed in claim 4, wherein: the outer wall of the barrier belt (84) is provided with a plurality of convex strips (841) which are uniformly distributed along the length direction of the barrier belt (84).

7. The steam pre-compressor as claimed in claim 1, wherein: be provided with on box (1) and induced draft device (6), induced draft device (6) include fan (61), cover (63) and aspiration channel (62) induced draft, fan (61) set up on box (1), cover (63) induced draft sets up on box (1) inner wall and is located the cloth top, the one end of aspiration channel (62) and the air outlet intercommunication of fan (61), the other end and the cover (63) intercommunication that induced drafts.

8. The steam pre-compressor as claimed in claim 7, wherein: be provided with on the cover (63) of induced drafting along the reservoir (64) that upwards extends of induced drafting cover (63) inboard, be provided with drainage tube (65) on the cover (63) of induced drafting, drainage tube (65) and reservoir (64) intercommunication, the one end that cover (63) of induced drafting was kept away from in drainage tube (65) stretches out box (1).

9. The steam pre-compressor as claimed in claim 8, wherein: the liquid storage tank (64) is obliquely and downwards arranged along the cloth conveying direction, and the communication position of the air suction pipe (62) and the liquid storage tank (64) is positioned at the lowest end of the liquid storage tank (64).

Images