CN212093205U - Screening machine for subway sludge separation treatment - Google Patents

Abstract

The utility model relates to a branch sieve separator of subway silt separation processing, including fixing at subaerial support, be fixed with the sieve hopper that has declination on the support, at sieve hopper bottom plate fixed surface's vibrating motor, be provided with the screen cloth that is used for sieving the silt granule inside the sieve hopper, be provided with the feed cylinder that supplies the silt unloading of different particle sizes on sieve hopper bottom plate, be provided with on the screening machine and prevent stifled mechanism, prevent stifled mechanism including setting up the rodless cylinder at sieve hopper both sides outer wall, be fixed with the connecting rod on two rodless cylinder sliders, be connected with the outlet pipe on connecting two rodless cylinders and the connecting rod on the connecting rod, outlet pipe one end is sealed, the other end is connected with the inlet tube, connect a plurality of minutes pipes on the outlet pipe, from dividing the water column of managing blowout to be used in the screen cloth, prevent screen cloth blocking. The utility model discloses have the effect that prevents the screen cloth jam.

Description

Screening machine for subway sludge separation treatment

Technical Field

The utility model belongs to the technical field of the technique of subway silt processing and specifically relates to a screening machine that subway silt separation was handled is related to.

Background

A large amount of sludge is generated in the construction process of the subway, chemical agents (such as flocculating agents) and the like are usually added into the dug-out sludge to solidify the sludge, the solid sludge needs to be smashed and then screened to be better used for later-stage processing such as brick making, and the sludge needs to be screened in order to obtain better raw material classification. In industrial production, there are many kinds of screen machines, such as fixed screens, roller screens, drum screens, swing screens, and vibrating screens, among which vibrating screens are most commonly used. The vibrating screen is a machine for grading mixed materials with different particle sizes according to particle sizes by utilizing a vibrating, horizontally arranged and mostly porous working surface with a certain inclination angle.

In chinese patent publication No. CN204159545U, a dry sand screening machine is disclosed, which comprises a screening machine body pillar (1), an upper cover pillar (2), a damping spring (3), a screening machine body (4), a screen (5), a feeding port (6), an upper cover (7), an air suction port (8), a dust-blocking curtain (9), a discharging port (10), a vibration motor (11), and a vibration motor bearing plate (12), wherein the lower part of the dust-blocking curtain (9) is freely suspended, so that the screen (5) can be conveniently removed and replaced by directly lifting the dust-blocking curtain (9) without detaching the upper cover (7) of the screening machine. Due to the introduction of the air suction opening (8) and the large height of the dust blocking curtain (9), on one hand, the environmental pollution can be reduced, and on the other hand, dust can be better sucked, so that the screening efficiency of the dry sand screening machine is improved.

The above prior art solutions have the following drawbacks: vibrating motor vibrates, and the mixed material that the screen cloth will be the particle size difference grades according to the granularity, but at the in-process of screening, causes the mixture to block up the sieve mesh easily, leads to satisfying the granule mixture of size and can not see through the screen cloth to make the screen cloth play not to divide the mesh of sieve.

Therefore, a new sieving machine is urgently needed in the market to solve the problems.

SUMMERY OF THE UTILITY MODEL

To the not enough that prior art exists, one of the purposes of the utility model is to provide a screening machine of subway silt separation processing.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a screening machine for separating and processing subway sludge comprises a support fixed on the ground, wherein a screening hopper is arranged on the support, a vibration damping assembly is arranged between the screening hopper and the support, the screening hopper is downwards inclined towards another support from one support, a vibrating motor fixed on the lower surface of a bottom plate of the screening hopper is arranged inside the screening hopper, a screen used for screening sludge particles is arranged inside the screening hopper, a discharging barrel used for discharging sludge particles with different particle sizes is arranged on the bottom plate of the screening hopper, an anti-blocking mechanism used for preventing the sludge from blocking screen holes is arranged on the screening machine, the anti-blocking mechanism comprises rodless cylinders arranged on the outer surfaces of two sides of the screening hopper, connecting rods are fixed on two rodless cylinder sliding blocks and connected with the two rodless cylinder sliding blocks, and a water outlet pipe parallel to the connecting rods is arranged on the lower surface of the connecting rods, outlet pipe one end is sealed, and the other end is connected with the inlet tube, go out to connect a plurality of mutual parallels and perpendicular to on the water pipe the branch pipe of outlet pipe, divide the pipe axis to be located the coplanar and act on through high-pressure water column the screen cloth prevents the screen cloth blocks up.

Through adopting above-mentioned technical scheme, under the effect of water pump, the water column is followed and is divided the pipe high pressure blowout, acts on the screen cloth, will block up the silt in the sieve mesh and dash away from the screen cloth, prevents the screen cloth jam, and under the effect of rodless cylinder, drive the outlet pipe and move at the sieve hopper upper surface simultaneously, make and divide pipe spun water column can spray more positions in the sieve hopper.

The present invention may be further configured in a preferred embodiment as: the vibration damping assembly comprises a plurality of connecting rods fixed at two ends of the screen hopper, a fixed cylinder fixed on the ground and corresponding to the connecting rods, a vibration damping spring fixed in the fixed cylinder, and a limiting block fixed on the connecting rods, wherein the connecting rods penetrate through the vibration damping spring, the limiting block is abutted against the vibration damping spring, and the upper end of the fixed cylinder is in threaded connection with a limiting cylinder which prevents the connecting rods from being separated from the fixed cylinder.

Through adopting above-mentioned technical scheme, the support is fixed subaerial, and in the connecting rod wore to establish the spring in the support, vibrating motor is at the in-process of vibration, and the sieve hopper can vibrate in vertical direction, and damping spring plays very big cushioning effect to the support, avoids to vibrate too violently to lead to the support to creep on ground.

The present invention may be further configured in a preferred embodiment as: be fixed with the connection on the inlet tube the change pipe of outlet pipe, change pipe one end is connected on the inlet tube, the other end with go out water piping connection, be provided with on the change pipe and make outlet pipe pivoted slewing mechanism, slewing mechanism is including fixing first annular separation blade in the inlet tube and fixing the second annular separation blade in the outlet tube, be fixed with the connection on the first annular separation blade the connecting bearing of second annular separation blade, connecting bearing inner circle is fixed on the second annular separation blade, and the outer lane is fixed on first annular separation blade, the sealing washer of fixed connection bearing inner circle tip butt on the first annular separation blade, set up on the second annular separation blade with connecting bearing outer lane is coaxial and be convenient for connecting the bearing and rotate the ring channel.

Through adopting above-mentioned technical scheme, inlet tube and outlet pipe rotate through the commentaries on classics pipe and connect, and the rotation of the outlet pipe of being convenient for makes to divide and manages upward spun water column and can enter into and cover whole sieve hopper as far as, prevents that silt from blockking up the sieve mesh, plays abluent effect to the sieve hopper simultaneously.

The present invention may be further configured in a preferred embodiment as: the connecting rod lower fixed surface is fixed with a plurality of coaxial solid fixed rings, the outlet pipe is worn to establish a plurality of in the fixed ring, the outlet pipe is kept away from the one end of rotary pipe is provided with and is convenient for outlet pipe pivoted actuating mechanism, actuating mechanism is including fixing the gear of outlet pipe tip, fix drive actuating cylinder on no pole cylinder slider and fix on driving actuating cylinder output shaft and with gear engagement's rack.

Through adopting above-mentioned technical scheme, drive actuating cylinder and start, drive rack motion to drive and rack toothing's gear revolve, the remote control of the outlet pipe of being convenient for.

The present invention may be further configured in a preferred embodiment as: the side wall of the lower end of the screening hopper is provided with a switch mechanism, the switch mechanism comprises switch grooves formed in the inner walls of the two sides of the screening hopper, and switch plates connected with the switch grooves are connected in a sliding and clamping mode in the switch grooves.

Through adopting above-mentioned technical scheme, switching mechanism's setting is convenient for open the sieve hopper, is convenient for observe the maintenance of the inside condition of sieve hopper and sieve hopper.

The present invention may be further configured in a preferred embodiment as: the screen cloth includes first screen cloth and the second screen cloth that is parallel to each other, the sieve mesh on the first screen cloth is greater than sieve mesh on the second screen cloth, first screen cloth and second screen cloth will the sieve hopper falls into first screening room, second screening room and third screening room from top to bottom, the sieve hopper below is provided with the intercommunication respectively the lower feed cylinder of first screening room, second screening room and third screening room, the lower feed cylinder including respectively with first screening room, second screening room and third screening room correspond feed cylinder under first feed cylinder, the second and the third of intercommunication.

Through adopting above-mentioned technical scheme, the setting of first screen cloth and second screen cloth makes the device can separate out the silt granule of equidimension not according to the size of sieve mesh to satisfy the needs in later stage.

The present invention may be further configured in a preferred embodiment as: all be provided with on first screen cloth and the second screen cloth and be convenient for the installation mechanism that first screen cloth and second screen cloth were dismantled, installation mechanism is including fixing respectively first screen cloth and second screen cloth both sides and be on a parallel with the dead lever of rodless cylinder, the dead lever with the lateral wall of sieve hopper butt sets up the groove of sliding that is on a parallel with the dead lever, sieve hopper inner wall is fixed with the joint that slides and is in the slide bar in groove slides, the slide bar lower extreme is provided with and prevents first screen cloth and second screen cloth break away from the spacing subassembly of slide bar.

Through adopting above-mentioned technical scheme, the screen cloth joint that slides is in the inslot that slides, is convenient for change the screen cloth of different sieve mesh sizes as required, and the maintenance of the screen cloth of being convenient for simultaneously is with repairing.

The present invention may be further configured in a preferred embodiment as: the limiting assembly comprises an insert block penetrating through the sliding rod and a reinforcing rod connecting the insert block.

Through adopting above-mentioned technical scheme, the setting of spacing subassembly is convenient for the screen cloth fixed in the sieve hopper, prevents that the screen cloth from breaking away from the groove of sliding and leading to can not be to the graininess silt branch sieve at the in-process of vibration in the sieve hopper.

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

1. under the effect of no pole cylinder, drive the outlet pipe and move at sieve hopper upper surface, under the effect of water pump, the water column is followed and is divided the pipe high pressure blowout, on the screen cloth, will block up the silt rush-off screen cloth in the sieve mesh, prevents that the screen cloth from blockking up.

2. The inlet tube and the outlet pipe are connected through rotating the pipe, the rotation of the outlet pipe of being convenient for makes the water column of being in charge of go up the spun can enter into and cover whole sieve hopper as far as, prevents that silt from blockking up the sieve mesh, plays abluent effect to the sieve hopper simultaneously.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an internal structure view of the present invention.

Fig. 3 is a schematic view of a connection structure of the rotating mechanism.

Fig. 4 is a schematic view of a mounting structure of the screen.

In the figure, 1, a bracket; 2. screening the hopper; 3. a vibration reduction assembly; 4. a vibration motor; 5. screening a screen; 6. feeding the material barrel; 7. an anti-blocking mechanism; 8. a rodless cylinder; 9. a connecting rod; 10. a water outlet pipe; 11. a water inlet pipe; 12. pipe distribution; 13. a connecting rod; 14. a fixed cylinder; 15. a damping spring; 16. a limiting block; 17. a limiting cylinder; 18. pipe rotation; 19. a rotating mechanism; 20. a first annular baffle plate; 21. a second annular baffle plate; 22. connecting a bearing; 23. a seal ring; 24. an annular groove; 25. a fixing ring; 26. a drive mechanism; 27. a gear; 28. mounting a plate; 29. a driving cylinder; 30. a rack; 31. a switch mechanism; 32. a switch slot; 33. a switch plate; 34. a first screen; 36. a first sizing chamber; 37. a second sizing chamber; 38. a third sizing chamber; 39. a first charging barrel; 40. a second charging barrel; 42. a third charging barrel; 43. an installation mechanism; 44. fixing the rod; 45. a sliding groove; 46. a slide bar; 47. a limiting component; 48. inserting a block; 49. a reinforcing rod; 50. a second screen.

Detailed Description

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

Referring to fig. 1 and 2, for the utility model discloses a subway silt separation processing's branch sieve machine, including fixing at subaerial support 1, be provided with sieve hopper 2 on support 1, sieve hopper 2 is by one of them support 1 downward sloping towards another support 1, at sieve hopper 2 bottom plate fixed surface's vibrating motor 4, is provided with the screen cloth 5 that is used for sieving the silt granule in sieve hopper 2 inside, is provided with the feed cylinder 6 that supplies the silt of different particle sizes to pass through on sieve hopper 2 bottom plate.

Referring to fig. 1 and 2, support 1 includes that vertical fixing is at connecting rod 13 on four angles of 2 lower surfaces of sieve hopper, fix subaerial and supply connecting rod 13 to correspond the solid fixed cylinder 14 of wearing to establish, be provided with damping assembly 3 in solid fixed cylinder 14, damping assembly 3 is including fixing damping spring 15 in spacing section of thick bamboo 17, fix stopper 16 on connecting rod 13, connecting rod 13 wears to establish in damping spring 13 and stopper 16 and damping spring 15 upper end butt, there is a spacing section of thick bamboo 17 that prevents connecting rod 13 and break away from solid fixed cylinder 14 at solid fixed cylinder 14 upper end threaded connection.

Referring to fig. 1 and 3, be provided with the anti-blocking mechanism 7 that prevents silt from blockking up the sieve mesh on sieve hopper 2, anti-blocking mechanism 7 is including fixing no pole cylinder 8 at 2 both sides surfaces of sieve hopper, two no pole cylinders 8 are unanimous with sieve hopper 2 incline direction, be fixed with connecting rod 9 on two no pole cylinder 8 sliders, surface mounting has a plurality of solid fixed rings 25 under connecting rod 9, wear to be equipped with outlet pipe 10 in solid fixed ring 25, connect a plurality of be parallel to each other and perpendicular to outlet pipe 10's branch pipe 12 on outlet pipe 10, divide pipe 12 to be located outlet pipe 10 homonymy and axis and be located the coplanar. Outlet pipe 10 one end is sealed, the other end is connected with runner 18, 18 one end of runner is connected on outlet pipe 10, other end fixed connection is on inlet tube 11, inlet tube 11 is the hose and can follow 8 sliders of rodless cylinder and move together, be connected with the water pump (not marking in the figure) that is used for drawing water on inlet tube 11, under the effect of water pump, high-pressure water column is spout in managing 12 from dividing, the effect is on screen cloth 5 and sieve hopper 2, prevent that graininess silt from blockking up the sieve mesh, play clear effect to sieve hopper 2 simultaneously.

Referring to fig. 2 and 3, a rotating mechanism 19 is disposed at a joint of the water inlet pipe 11 and the rotating pipe 18, the rotating mechanism 19 includes a first annular blocking piece 20 fixed in the water inlet pipe 11 and a second annular blocking piece 21 fixed in the water outlet pipe 10, a connecting bearing 22 connected with the second annular blocking piece 21 is fixed on the first annular blocking piece 20, an inner ring end of the connecting bearing 22 is fixed on the second annular blocking piece 21, an outer ring end of the connecting bearing 22 is fixed on the first annular blocking piece 20, a sealing ring 23 fixedly connected with the inner ring end of the bearing 22 on the first annular blocking piece 20 is abutted, and a rotating ring groove 24 coaxial with an outer ring of the connecting bearing 22 and convenient for the connecting bearing 22 is formed on the second annular. The end of the water outlet pipe 10 far away from the rotating pipe 18 is provided with a driving mechanism 26, the driving mechanism 26 comprises a gear 27 which is fixed on the water outlet pipe 10 and is coaxial with the water outlet pipe 10, a mounting plate 28 which is horizontally fixed on a sliding block of a non-inductive cylinder 29, a driving cylinder 29 is fixed on the upper surface of the mounting plate 28, and a rack 30 which is meshed with the gear 27 is fixed on an output shaft of the driving cylinder 29. Under the action of the driving cylinder 29, the rack 30 is driven to move, so that the gear 27 meshed with the rack 30 is driven to rotate, water columns sprayed out of the branch pipes 12 can reach all positions of the screening hopper 2 as far as possible, blocking of screening holes is prevented, and inclination of the screening hopper 2 is facilitated.

Referring to fig. 2 and 4, the screen 5 includes a first screen 34 and a second screen 50 which are parallel to each other, the first screen 34 is located above the second screen 50, and the screen hole on the first screen 34 is larger than the screen hole on the second screen 50, the first screen 34 and the second screen 50 divide the screen hopper 2 into a first screening chamber 36, a second screening chamber 37 and a third screening chamber 38 from top to bottom, a lower cylinder 6 which is respectively communicated with the first screening chamber 36, the second screening chamber 37 and the third screening chamber 38 is arranged below the screen hopper 2, the lower cylinder 6 includes a first screening chamber 36, the second screening chamber 37 and the third screening chamber 38 are correspondingly communicated with a first discharging barrel 39, a second discharging barrel 40 and a third discharging barrel 42, and the first discharging barrel 39, the second discharging barrel 40 and the third discharging barrel 42 respectively pour the sludge with different particle sizes into different channels, so that the sludge with different particles can be treated in a centralized manner.

Referring to fig. 2 and 4, the first screen cloth 34 and the second screen cloth 50 are both provided with mounting mechanisms 43 for facilitating detachment of the first screen cloth 34 and the second screen cloth 50, each mounting mechanism 43 comprises a fixing rod 44 which is fixed on two sides of the first screen cloth 34 and the second screen cloth 50 respectively and is parallel to the rodless cylinder 8, a sliding groove 45 which is parallel to the fixing rod 44 is formed in a side wall of the fixing rod 44 abutted to the screen hopper 2, a sliding rod 46 which is slidably clamped in the sliding groove 45 is fixed on the inner wall of the screen hopper 2, a limiting component 47 which prevents the first screen cloth 34 and the second screen cloth 50 from being separated from the sliding rod 46 is arranged at the lower end of the sliding rod 46, and each limiting component 47 comprises an insert block 48 which penetrates through the sliding rod 46 and a reinforcing rod 49 which connects the two.

Referring to fig. 2 and 4, the opening and closing mechanism 31 is disposed on the side wall of the lower end of the screen hopper 2, the opening and closing mechanism 31 includes opening and closing grooves 32 formed on the inner walls of both sides of the screen hopper 2, a switch plate 33 connected to the two opening and closing grooves 32 is slidably engaged in the opening and closing grooves 32, and the first screen 34 and the second screen 50 can be smoothly installed and detached due to the arrangement of the switch plate 33.

The implementation principle of the embodiment is as follows: the switch board 33 is opened, the first screen 34 and the second screen 50 with different screen hole sizes are installed as required, the insert block 48 is inserted on the sliding rod 46, the first screen 34 and the second screen 50 are fixed, under the action of the vibrating motor 4, through the screening of the first screen 34 and the second screen 50, sludge particles with different sizes are respectively discharged from different positions of the first discharging barrel 39, the second discharging barrel 40 and the third discharging barrel 42, the separation of sludge with different particle sizes is realized, the rodless cylinder 8 is driven, the water outlet pipe 10 is driven to move above the screen hopper 2, the driving cylinder 29 is started, the water outlet pipe 10 is driven to rotate, under the action of the water pump, a high-pressure water column is sprayed out of the branch pipe 12 and is shot to each position of the screen 5, and the blocking of the screen holes is prevented.

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 (8)

1. The utility model provides a branch sieve separator of subway silt separation processing, is including fixing subaerial support (1), be provided with sieve hopper (2) on support (1), sieve hopper (2) with be provided with damping subassembly (3) between support (1), sieve hopper (2) by one of them support (1) is towards another support (1) downward sloping, sieve hopper (2) bottom plate lower surface fixed vibrating motor (4), sieve hopper (2) inside is provided with screen cloth (5) that are used for sieving the silt granule, be provided with feed cylinder (6) that supply the unloading of silt granule of different granule sizes on sieve hopper (2) bottom plate, its characterized in that: be provided with on sieve hopper (2) and prevent that silt from blockking up anti-blocking mechanism (7) of sieve mesh, prevent that stifled mechanism (7) is including setting up rodless cylinder (8), two of sieve hopper (2) both sides surface be fixed with connecting rod (9) on rodless cylinder (8) slider, connecting rod (9) are connected two rodless cylinder (8) slider, connecting rod (9) lower surface is provided with outlet pipe (10) that is on a parallel with connecting rod (9), outlet pipe (10) one end is sealed, and the other end is connected with inlet tube (11), connect a plurality of mutual parallels and perpendicular to on outlet pipe (10) branch pipe (12) of outlet pipe (10), branch pipe (12) axis is located the coplanar and acts on through high-pressure water column screen cloth (5) prevent screen cloth (5) jam.

2. The screening machine for subway sludge separation treatment as claimed in claim 1, wherein: damping subassembly (3) are fixed including fixing a plurality of connecting rods (13) at sieve hopper (2) both ends, fixed cylinder (14), the lower extreme that is fixed subaerial and corresponds with connecting rod (13) are fixed damping spring (15) in fixed cylinder (14), are fixed stopper (16) on connecting rod (13), connecting rod (13) are worn to establish in damping spring (15), stopper (16) with damping spring (15) butt, fixed cylinder (14) upper end threaded connection has and prevents that connecting rod (13) break away from spacing section of thick bamboo (17) of fixed cylinder (14).

3. The screening machine for subway sludge separation treatment as claimed in claim 1, wherein: the water inlet pipe (11) is fixedly provided with a rotating pipe (18) connected with the water outlet pipe (10), one end of the rotating pipe (18) is connected onto the water inlet pipe (11), the other end of the rotating pipe is connected with the water outlet pipe (10), the rotating pipe (18) is provided with a rotating mechanism (19) capable of rotating the water outlet pipe (10), the rotating mechanism (19) comprises a first annular blocking piece (20) fixed in the water inlet pipe (11) and a second annular blocking piece (21) fixed in the water outlet pipe (10), the first annular blocking piece (20) is fixedly provided with a connecting bearing (22) connected with the second annular blocking piece (21), the inner ring of the connecting bearing (22) is fixed onto the second annular blocking piece (21), the outer ring is fixed onto the first annular blocking piece (20), and the first annular blocking piece (20) is fixedly connected with a sealing ring (23) abutted against the end part of the inner ring of the bearing (22), and the second annular baffle plate (21) is provided with an annular groove (24) which is coaxial with the outer ring of the connecting bearing (22) and is convenient for the connecting bearing (22) to rotate.

4. The screening machine for subway sludge separation treatment as claimed in claim 3, wherein: connecting rod (9) lower fixed surface is equipped with a plurality of coaxial solid fixed ring (25), outlet pipe (10) are worn to establish a plurality of gu in fixed ring (25), outlet pipe (10) are kept away from the one end of commentaries on classics pipe (18) is provided with and is convenient for outlet pipe (10) pivoted actuating mechanism (26), actuating mechanism (26) are including fixing gear (27) of outlet pipe (10) tip, fixing drive actuating cylinder (29) on rodless cylinder (8) slider and fix drive actuating cylinder (29) output shaft on and with rack (30) of gear (27) meshing.

5. The screening machine for subway sludge separation treatment as claimed in claim 1, wherein: sieve hopper (2) lower extreme lateral wall is provided with on-off mechanism (31), on-off mechanism (31) are including seting up switch groove (32) of sieve hopper (2) both sides inner wall, the sliding joint has two in switch groove (32) connection switch board (33) of switch groove (32).

6. The screening machine for subway sludge separation treatment as claimed in claim 5, wherein: screen cloth (5) are including first screen cloth (34) and second screen cloth (50) that are parallel to each other, the sieve mesh on first screen cloth (34) is greater than sieve mesh on second screen cloth (50), first screen cloth (34) and second screen cloth (50) will sieve hopper (2) from top to bottom divide into first screening room (36), second screening room (37) and third screening room (38), sieve hopper (2) below is provided with respectively the intercommunication first screening room (36), second screening room (37) and third screening room (38) feed cylinder (6), feed cylinder (6) down including respectively with first screening room (36), second screening room (37) and third screening room (38) correspond first feed cylinder (39), second feed cylinder (40) and third feed cylinder (42) down of intercommunication.

7. The screening machine for subway sludge separation treatment as claimed in claim 6, wherein: all be provided with on first screen cloth (34) and second screen cloth (50) and be convenient for installation mechanism (43) that first screen cloth (34) and second screen cloth (50) were dismantled, installation mechanism (43) are including fixing respectively first screen cloth (34) and second screen cloth (50) both sides and be on a parallel with dead lever (44) of rodless cylinder (8), dead lever (44) with slide groove (45) that are on a parallel with dead lever (44) are seted up to the lateral wall of sieve hopper (2) butt, sieve hopper (2) inner wall is fixed with the joint that slides and is in slide sliding rod (46) of groove (45), slide rod (46) lower extreme is provided with and prevents first screen cloth (34) and second screen cloth (50) break away from spacing subassembly (47) of slide rod (46).

8. The screening machine for subway sludge separation treatment as claimed in claim 7, wherein: the limiting assembly (47) comprises an insert block (48) penetrating through the sliding rod (46) and a reinforcing rod (49) connecting the two insert blocks (48).

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