CN212174617U

CN212174617U - Water recovery system of pre-shrinking machine

Info

Publication number: CN212174617U
Application number: CN202020399154.3U
Authority: CN
Inventors: 潘利兆
Original assignee: Hangzhou Three Dyeing And Finishing Co ltd
Current assignee: Hangzhou Three Dyeing And Finishing Co ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-12-18
Anticipated expiration: 2030-03-25

Abstract

The utility model relates to a preshrinking machine water recovery system, it includes filtering ponds, sedimentation tank and cooling water pool, filtering ponds and sedimentation tank intercommunication have first pipeline, sedimentation tank and cooling water pool intercommunication have the second pipeline, still including rotating the cartridge filter that sets up in filtering ponds, fixed inlet tube and the blow off pipe of setting on the filtering ponds lateral wall, the rotation center at cartridge filter both ends communicates with inlet tube and blow off pipe respectively, be equipped with the dirty groove of collection in the cartridge filter inner chamber, blow off pipe and the dirty groove fixed connection of collection and intercommunication, the filtering barrels is equipped with the spray in the dirty groove top of collection outward, the cartridge filter is provided with the relative filtering ponds pivoted drive arrangement who is used for driving the cartridge filter outward. The utility model discloses a cartridge filter preshrinking machine retrieves pile form impurity in the cooling water, utilizes granular impurities such as talcum powder in the sedimentation tank clearance cooling water, is favorable to retrieving to recycle cold district water, has effectively improved the utilization ratio of water resource.

Description

Water recovery system of pre-shrinking machine

Technical Field

The utility model belongs to the technical field of the technique of dyeing and finishing and specifically relates to a water recovery system is related to.

Background

In the dyeing and finishing process, the phenomena of weft shrinkage and warp elongation instability are caused by the fact that the fabric is stretched by warp tension. In the subsequent processing and wearing process, certain shrinkage caused by different temperatures can occur, and the product quality is influenced. Therefore, the fabric is pre-shrunk in the fabric dyeing and finishing process, so that the physical properties of the fabric are stable. The preshrinking machine is an important device for achieving the purpose, and generally, mechanical preshrinking is to firstly wet or soak the fabric, then apply mechanical extrusion in the warp direction to increase the buckling wave height, and then slowly dry the fabric at a lower temperature in a relaxed state to naturally shrink the fabric so as to obtain the fabric with stable dimension.

The commonly used preshrinking device is a rubber blanket preshrinking machine, and in the operation of the preshrinking machine, cooling water needs to be sprayed on the preshrinking rubber blanket to cool and clean the preshrinking rubber blanket. The used cooling water contains a small amount of solid additives such as talcum powder and the like added in the pre-shrinking process. In order to reduce the waste of water resources, the water removed from the cooling water fabric needs to be recycled and filtered so as to be recycled.

The existing water recovery system, such as the Chinese utility model with publication number CN205287862U, discloses a pre-shrinking machine water recovery system, which comprises a first pre-shrinking machine and a second pre-shrinking machine, wherein one side of the first pre-shrinking machine and one side of the second pre-shrinking machine are respectively provided with a filter tank; the two filter tanks are respectively connected with the primary sedimentation tank through pipelines; a recovery water tank is arranged on one side of the primary sedimentation tank in a clinging manner; the recovery water tank is connected with an internal and external spraying system of the pre-shrinking machine rubber blanket unit through a pump; a filter is arranged between the pump and the inner and outer spraying systems of the pre-shrinking machine rubber blanket unit; the recovery water tank is also connected with a water supplementing pipe and a cooling water outlet pipe of the woolen blanket drying cylinder. The utility model discloses a concentrate two preshrinking machine rubber blanket unit shower water and retrieve, get into the talcum powder of just sinking pond sedimentation preshrinking machine use after filtering, the cistern of overflowing income one side after just sinking water in the pond is full, again through once filtration cycle to rubber blanket unit spray use.

The technical scheme has the following defects: as the fluff fiber and the like can be left on the cloth, the fluff fiber and the like easily enter the water recovery system along with the spray water in the spraying process, and the blockage of the pipeline and the spraying device can be caused to influence the normal operation of the pre-shrinking machine.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, one of the purposes of the utility model is to provide a preshrinking machine water recovery system, it can filter the pile form impurity in the recovery cooling water.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a pre-shrinking machine water recovery system comprises a filter tank, a sedimentation tank and a cooling water tank, wherein the filter tank is communicated with the sedimentation tank through a first pipeline, the sedimentation tank is communicated with the cooling water tank through a second pipeline, the pre-shrinking machine water recovery system also comprises a filter cartridge rotatably arranged in the filter tank, a water inlet pipe and a blow-off pipe fixedly arranged on the side wall of the filter tank, and a sewage collecting tank arranged in the inner cavity of the filter cartridge, one end of the water inlet pipe penetrates into the filter cartridge from the rotating center of one end of the filter cartridge and is communicated with the inner cavity of the filter cartridge, one end of the blow-off pipe penetrates into the filter cartridge from the rotating center of the other end of the filter cartridge and is communicated with the sewage collecting tank, the other end of the water inlet pipe and the other end of the blow-off pipe penetrate out of the side wall of the filter tank, the filter cartridge is, the opening of the dirt collecting groove is fixedly arranged towards the spraying part, and a driving device used for driving the filter cartridge to rotate relative to the filter tank is arranged outside the filter cartridge.

Through adopting above-mentioned technical scheme, in retrieving the cooling water and getting into the cartridge filter from the inlet tube, at the rotation in-process of cartridge filter, the pile form impurity adhesion in retrieving the cooling water is on the cartridge filter, and the cooling water after the filtration passes in the cartridge filter gets into the filtering ponds. When the filter cartridge inner wall that the adhesion has the fluff rotates to the dirty groove of orientation collection, utilize and spray the piece and wash the impurity of adhesion on the filter cartridge to the dirty groove of collection in to discharge through the blow off pipe with shower water and impurity discharge cartridge filter. The filtration to the wool form impurity in the cooling water has been realized, the work efficiency of cartridge filter has been guaranteed simultaneously. The probability of shutdown of the pre-compressor caused by blockage of the cooling water spraying system is reduced.

The present invention may be further configured in a preferred embodiment as: the filter tank is provided with a water collecting barrel outside, the water collecting barrel is internally provided with a filter mesh bag, the filter mesh bag is fixed on the outlet of the blow-off pipe through a clamping component, and a water collecting pipe is communicated between the water collecting barrel and the sedimentation tank.

By adopting the technical scheme, the spray water and the impurities in the sewage collecting tank enter the filter screen bag through the sewage discharge pipe, and the impurities are collected in the filter screen bag, so that the cleaning is convenient; and the spray water seeps through the filter mesh bag into the water collecting barrel and then flows into the sedimentation tank through the water collecting pipe. Not only ensures the working efficiency of the sewage collecting tank, but also improves the utilization rate of water resources.

The present invention may be further configured in a preferred embodiment as: the clamping assembly comprises a connecting pipe embedded in the sewage pipe in a sliding mode, a plurality of through grooves circumferentially formed in the outer wall of the sewage pipe, clamping grooves formed in the outer wall of the connecting pipe and corresponding to the through grooves, and clamping rods clamped in the through grooves and the clamping grooves, and the connecting pipe and the filter mesh bag are integrally arranged.

Through adopting above-mentioned technical scheme, utilize the joint subassembly to fix the installation of filter screen bag on the blow off pipe, be convenient for filter the exhaust sewage of blow off pipe, simultaneously, convenient to detach filter screen bag clears up, has improved the usability of filter screen bag.

The present invention may be further configured in a preferred embodiment as: the joint subassembly still includes the drive ring of threaded connection on the blow off pipe, offers standing groove, the slip on the blow off pipe outer wall and inlays the wedge of locating in the standing groove, sets firmly in the standing groove and is used for promoting the spring that the joint pole breaks away from the joint groove, the standing groove with run through the groove intercommunication, joint pole and wedge fixed connection, the spring both ends respectively with the lateral wall fixed connection of wedge and standing groove, be equipped with first spigot surface on the wedge, first spigot surface sets up towards the inner wall slope of drive ring, the inner wall of drive ring is contradicted in the tip of all wedges.

By adopting the technical scheme, the driving ring is rotated, and when the inner wall of the driving ring is abutted against all the wedge-shaped blocks, the wedge-shaped blocks can be pushed to insert the clamping rods into the clamping grooves; or rotate the drive ring, when the inner wall of drive ring breaks away from with the contact of wedge, the spring will promote the joint pole and break away from the joint groove, is convenient for clear up the impurity of collecting in the filter screen bag, has effectively improved the cleaning efficiency of filter screen bag.

The present invention may be further configured in a preferred embodiment as: the sedimentation tank bottom is equipped with the depressed part, the sedimentation tank bottom is equipped with the second spigot surface towards the depressed part slope setting.

Through adopting above-mentioned technical scheme, get into the cooling water of sedimentation tank in the follow filtering ponds, remain the less impurity of particle size such as partial talcum powder, through setting up second spigot surface and depressed part, make granule impurity such as talcum powder deposit the back and fall into the depressed part, improve the cleanliness factor of retrieving the cooling water.

The present invention may be further configured in a preferred embodiment as: and a sediment pump is arranged in the depressed part, a sediment discharge pipe is communicated with the sediment pump, and one end of the sediment discharge pipe penetrates out of the sedimentation tank.

Through adopting above-mentioned technical scheme, utilize silt pump and mud pipe to discharge the sedimentation tank with the interior sedimentary impurity such as talcum powder of depressed part, guarantee the cleanness of sedimentation tank.

The present invention may be further configured in a preferred embodiment as: the driving device comprises a reducing motor arranged on the outer wall of the filtering tank, a main gear fixedly arranged on a rotating shaft of the reducing motor and an auxiliary gear fixedly arranged at the end part of the filter cylinder, and the main gear and the auxiliary gear are in meshing transmission.

Through adopting above-mentioned technical scheme, set firmly the gear at the cartridge filter tip, the meshing transmission through the gear pair drives the cartridge filter and rotates, makes the impurity of adhesion on each position of cartridge filter inner wall as far as possible, can both be washed to the dirty inslot of collection by spraying the piece.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the filtering cylinder is arranged in the filtering tank, plush impurities in the recovered cooling water are filtered, and then the impurities adhered to the filtering cylinder are washed to the sewage collecting tank by the spraying piece and then discharged, so that the cleanness of the recovered cooling water is effectively improved, and the recycling is convenient;

2. impurities discharged from the sewage discharge pipe are collected through a filter mesh bag sleeved on the opening of the sewage discharge pipe so as to recycle spray water, and the filter belt is fixed through a clamping component so as to be convenient for disassembling and cleaning the impurities accumulated in the filter mesh bag;

3. through set up depressed part and second spigot surface in the sedimentation tank, make impurity such as talcum powder in the recovery cooling water deposit and fall into the depressed part, recycle sludge pipe discharge has further improved the cleanliness factor of retrieving the cooling water.

Drawings

FIG. 1 is a schematic view of the overall structure of a water recovery system of a pre-compressor in the present embodiment;

FIG. 2 is a schematic sectional view of the filtration tank in this embodiment;

FIG. 3 is a schematic sectional view of the sedimentation tank in this embodiment;

fig. 4 is a partially enlarged schematic view of a portion a in fig. 2.

In the figure, 1, a filter tank, 11, a first pipeline, 2, a sedimentation tank, 21, a second pipeline, 22, a concave part, 23, a second guide surface, 24, a silt pump, 25, a sludge discharge pipe, 3, a cooling water tank, 4, a filter cylinder, 41, a water inlet pipe, 5, a sludge collection groove, 51, a spraying part, 52, a sewage discharge pipe, 53, a water collection barrel, 54, a filter mesh bag, 55, a water collection pipe, 6, a driving device, 61, a speed reduction motor, 62, a main gear, 63, a secondary gear, 7, a clamping assembly, 71, a connecting pipe, 72, a through groove, 73, a clamping groove, 74, a clamping rod, 75, a driving ring, 76, a placing groove, 77, a wedge block, 78, a spring, 79 and a first guide surface.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a preshrinking machine water recovery system, including filtering ponds 1, sedimentation tank 2 and cooling water pool 3, filtering ponds 1 and sedimentation tank 2 intercommunication have first pipeline 11, and sedimentation tank 2 and cooling water pool 3 intercommunication have second pipeline 21, rotate in filtering ponds 1 and be provided with cartridge filter 4, and the cooling water of retrieving in the preshrinking machine is sent to in the inner chamber of cartridge filter 4, and pile form impurity in the cooling water adheres on cartridge filter 4, and the cooling water after the filtration falls into filtering ponds 1. The filtered cooling water is sent to the sedimentation tank 2 through the first pipeline 11, granular impurities such as talcum powder are precipitated through the sedimentation tank 2, and the cooling water flows into the cooling water tank 3 through the second pipeline 21 so as to be recycled.

Referring to fig. 1 and 2, both ends of the filter cartridge 4 are rotatably connected to the side wall of the filtering tank 1, the rotating centers of both ends of the filter cartridge 4 are respectively communicated with the water inlet pipe 41 and the sewage draining pipe 52, the water inlet pipe and the sewage draining pipe are fixedly connected to the side wall of the filtering tank, and one end 41 of the water inlet pipe and one end 52 of the sewage draining pipe penetrate through the side wall of the filtering tank 1. Be equipped with dirty groove 5 of collection in the inner chamber of cartridge filter 4, dirty groove 5 of collection is the rectangle roughly, and the axial extension of cartridge filter 4 is followed at dirty groove 5 both ends of collection. The blow-off pipe 52 one end communicates with the dirt collecting groove 5, and the blow-off pipe 52 is fixedly connected with the dirt collecting groove 5, and the dirt collecting groove 5 is fixed in the inner cavity of the filter cartridge 4 through the support of the blow-off pipe 52. The cartridge filter 4 is equipped with the piece 51 that sprays that is used for washing the surface of cartridge filter 4 outside the dirty groove 5 top of collection, and this piece 51 that sprays is a plurality of shower nozzles that distribute along the cartridge filter 4 axial, and the dirty groove of opening collection in the dirty groove of collection is towards the fixed setting of shower nozzle.

Referring to fig. 1, a driving device 6 for driving the filter cartridge 4 to rotate is arranged outside the filter cartridge 4, the driving device 6 includes a reduction motor 61, a main gear 62 and a secondary gear 63, the reduction motor 61 is mounted on the outer wall of the filter tank 1, the main gear 62 is fixedly arranged on the motor shaft of the reduction motor 61, the secondary gear 63 is integrally arranged at the end of the filter cartridge 4, and the main gear 62 and the secondary gear 63 are in meshing transmission and drive the filter cartridge 4 to rotate.

Retrieve the inner chamber that the cooling water got into the cartridge filter through the inlet tube, the cartridge filter is under drive arrangement's drive, and relative filtering ponds and dirty groove circumferential direction of collection, the impurity adhesion in the cooling water is on the inner wall at the cartridge filter, and the cooling water passes the cartridge filter and gets into in the filtering ponds. When the inner wall of the filter cylinder adhered with impurities rotates to a position between the spraying part and the sewage collecting groove, the impurities fall into the sewage collecting groove under the impact of spray water and are discharged from the sewage discharge pipe along with the spray water, and then the recovered cooling water is filtered.

Referring to fig. 1 and 2, a water collecting barrel 53 is arranged outside the filter cartridge 4, a filter mesh bag 54 is arranged in the water collecting barrel 53, the filter mesh bag 54 is fixed on the outlet of the sewage draining pipe 52 through a clamping assembly 7, and a water collecting pipe 55 and a water pump are communicated between the water collecting barrel 53 and the sedimentation tank 2. The washing water and impurities discharged from the sewage drain 52 are filtered by the filtering mesh bag 54, the impurities are collected in the filtering mesh bag 54, and the washing water flows into the collecting tub 53 and then is supplied to the settling tank 2 through the water pump and the collecting pipe 55.

Referring to fig. 2 and 4, the clamping assembly 7 comprises a connecting pipe 71, a through groove 72, a clamping groove 73 and a clamping rod 74, wherein the connecting pipe 71 and the filter mesh bag 54 are integrally arranged, and the connecting pipe 71 is slidably embedded in the sewage draining pipe 52. The outer wall of the sewage draining pipe 52 is provided with a plurality of through grooves 72 which are circumferentially distributed, the clamping groove 73 is arranged on the outer wall of the connecting pipe 71 and corresponds to the through groove 72, and the clamping rod 74 is simultaneously clamped in the through groove 72 and the clamping groove 73.

Referring to fig. 2 and 4, in order to fix the filter mesh bag 54 to the sewage pipe 52 in a clamping manner, a driving ring 75 is screwed on the outer wall of the sewage pipe 52, a placing groove 76 communicated with the through groove 72 is further formed in the outer wall of the sewage pipe 52, and a wedge-shaped block 77 is embedded in the placing groove 76 in a sliding manner. The catch lever 74 is integrally formed with a wedge block 77, and the wedge block 77 is provided with a first guide surface 79 disposed obliquely toward the inner wall of the drive ring 75. When the driving ring 75 is rotated and the driving ring 75 abuts against the first guide surfaces 79 of all the wedge-shaped blocks 77, the driving ring 75 pushes the wedge-shaped blocks 77 into the placing groove 76 and the clamping rod 74 is clamped in the clamping groove 73, so that the filter mesh bag 54 is fixedly installed on the sewage pipe 52.

Referring to fig. 2 and 4, in order to facilitate the disassembly and cleaning of the filter mesh bag 54, a spring 78 for pushing the clamping rod 74 to be separated from the clamping groove 73 is arranged in the placing groove 76, and two ends of the spring 78 are fixedly connected with the side wall of the placing groove 76 and the side wall of the wedge block 77 respectively. When the driving ring 75 is rotated and the driving ring 75 is out of contact with the wedge-shaped block 77, the spring 78 pushes the catch rod 74 to be disengaged from the catch groove 73, thereby facilitating the filter mesh bag 54 to be taken out of the sewage pipe 52.

Referring to fig. 1 and 3, a recess 22 is provided at the bottom of the sedimentation tank 2, and a second guide surface 23 inclined toward the recess 22 is further provided at the bottom of the sedimentation tank 2. After the recovered cooling water in the filtering tank 1 enters the sedimentation tank 2, the residual talcum powder and other granular impurities in the cooling water are precipitated and fall into the second guide surface 23, and slide into the concave part 22 under the action of gravity. In order to clean impurities such as talcum powder deposited in the concave part 22, a sediment pump 24 is arranged in the concave part 22, and a sludge discharge pipe 25 is communicated with the sediment pump 24. The second pipeline 21 is communicated with the upper end of the sedimentation tank 2, and the settled cooling water supernatant is sent to the cooling water tank 3 through the second pipeline 21 for recycling.

The implementation principle of the embodiment is as follows: the cooling water recovered from the pre-shrinking machine enters the filter cartridge 4 through the water inlet pipe 41, plush-shaped impurities in the cooling water are adhered to the filter cartridge 4, and the filtered cooling water falls into the filter tank 1 and is sent to the sedimentation tank 2 through the first pipeline 11 and the water pump. After the cooling water is precipitated, the talcum powder and other granular impurities in the water are deposited in the concave part 22 at the bottom of the sedimentation tank 2, and then the talcum powder is discharged out of the sedimentation tank 2 through the silt pump 24 and the sludge discharge pipe 25. The supernatant in the sedimentation tank 2 flows into the cooling water tank 3 through a second pipeline 21 so as to be recycled. The filter cartridge 4 is washed by the nozzle, adhered lint impurities are washed into the dirt collection tank 5, washing water and lint impurities flow to the water collection tank 53 through the dirt discharge pipe 52, the impurities are collected in the filter mesh bag 54, and the washing water enters the water collection tank 53 and is pumped to the sedimentation tank 2 through the water collection pipe 55 and the water pump.

If the filter mesh bag 54 needs to be cleaned, the driving ring 75 can be rotated to make the inner wall of the driving ring 75 be separated from the contact with the wedge-shaped block 77, and the clamping rod 74 is separated from the clamping groove 73 under the pushing of the spring 78, so that the filter mesh bag 54 can be conveniently taken out of the sewage pipe 52 for cleaning. If the filter mesh bag 54 needs to be installed and fixed again, the connecting pipe 71 is embedded into the sewage draining pipe 52, then the driving ring 75 is rotated, the inner wall of the driving ring 75 is abutted against the wedge-shaped block 77 and pushes the wedge-shaped block 77 to be pressed into the placing groove 76, and the clamping rod 74 is driven to be clamped in the clamping groove 73, so that the filter mesh bag 54 is fixed.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a preshrinking machine water recovery system, includes filtering ponds (1), sedimentation tank (2) and cooling water pool (3), filtering ponds (1) and sedimentation tank (2) intercommunication have first pipeline (11), sedimentation tank (2) and cooling water pool (3) intercommunication have second pipeline (21), its characterized in that: the sewage treatment device also comprises a filter cartridge (4) which is rotatably arranged in the filter tank (1), a water inlet pipe (41) and a sewage discharge pipe (52) which are fixedly arranged on the side wall of the filter tank (1), and a sewage collection groove (5) which is arranged in the inner cavity of the filter cartridge (4), wherein one end of the water inlet pipe (41) penetrates into the filter cartridge (4) from the rotation center of one end of the filter cartridge (4) and is communicated with the inner cavity of the filter cartridge (4), one end of the sewage discharge pipe (52) penetrates into the filter cartridge (4) from the rotation center of the other end of the filter cartridge (4) and is communicated with the sewage collection groove (5), the other end of the water inlet pipe (41) and the other end of the sewage discharge pipe (52) penetrate out of the side wall of the filter tank (1), the filter cartridge (4) is rotatably connected with the water inlet pipe (41), the filter cartridge (4) is rotatably connected with, the sewage collecting tank is characterized in that a spraying part (51) is arranged above the sewage collecting tank (5) outside the filter cartridge (4), an opening of the sewage collecting tank (5) is fixedly arranged towards the spraying part (51), and a driving device (6) used for driving the filter cartridge (4) to rotate relative to the filter tank (1) is arranged outside the filter cartridge (4).

2. A pre-compressor water recovery system as claimed in claim 1, wherein: a water collecting barrel (53) is arranged outside the filtering tank (1), a filtering mesh bag (54) is arranged in the water collecting barrel (53), the filtering mesh bag (54) is fixed on an outlet of the sewage discharge pipe (52) through a clamping component (7), and a water collecting pipe (55) is communicated between the water collecting barrel (53) and the sedimentation tank (2).

3. A pre-compressor water recovery system as claimed in claim 2, wherein: joint subassembly (7) including slip inlay establish connecting pipe (71) in blow off pipe (52), a plurality of circumference offer run through groove (72) on blow off pipe (52) outer wall, offer on connecting pipe (71) outer wall and corresponding to joint groove (73) that run through groove (72), joint in the joint pole (74) that run through groove (72) and joint groove (73) simultaneously, connecting pipe (71) and filter screen bag (54) fixed connection.

4. A pre-compressor water recovery system as claimed in claim 3, wherein: clamping subassembly (7) still include driving ring (75) on screwed connection blow off pipe (52), set up standing groove (76) on blow off pipe (52) outer wall, slip inlay wedge (77) of locating in standing groove (76), set firmly in standing groove (76) and be used for propelling clamping rod (74) and break away from spring (78) of joint groove (73), standing groove (76) with run through groove (72) intercommunication, clamping rod (74) and wedge (77) fixed connection, spring (78) both ends respectively with the lateral wall fixed connection of wedge (77) and standing groove (76), be equipped with first spigot surface (79) on wedge (77), first spigot surface (79) set up towards the inner wall slope of driving ring (75), the inner wall of driving ring (75) is in the tip of all wedge conflict pieces (77).

5. A pre-compressor water recovery system as claimed in claim 4, wherein: sedimentation tank (2) bottom is equipped with depressed part (22), the bottom of sedimentation tank (2) is equipped with second spigot surface (23) towards depressed part (22) slope setting.

6. A pre-compressor water recovery system as claimed in claim 5, wherein: a sediment pump (24) is arranged in the depressed part (22), a sediment discharge pipe (25) is communicated with the sediment pump (24), and one end of the sediment discharge pipe (25) penetrates out of the sedimentation tank (2).

7. A pre-compressor water recovery system as claimed in claim 6, wherein: the driving device (6) comprises a speed reducing motor (61) arranged on the outer wall of the filtering tank (1), a main gear (62) fixedly arranged on a rotating shaft of the speed reducing motor (61), and an auxiliary gear (63) fixedly arranged at the end part of the filtering cylinder (4), wherein the main gear (62) is in meshing transmission with the auxiliary gear (63).