A shielded grid sand integrated machine

Abstract

The present application relates to a kind of plate type grid sand integrated machine, including the rack with liquid inlet and sludge outlet being arranged at both ends, multiple groups are arranged in the rack and are filtered large particle sludge along the direction of material flow and are classified, the separation mechanism for separating sand and water of filtrate is arranged below each filtering mechanism, the mixing mechanism for mixing filtrate is arranged between filtering mechanism and separation mechanism, the conveying mechanism for conveying slurry on filtering mechanism is arranged on filtering mechanism and lower end extends into mixing mechanism, the pressing mechanism for alternately pressing slurry on filtering mechanism is arranged above filtering mechanism of tail end and cooperates with conveying mechanism, and the wetting mechanism for wetting pressing mechanism is arranged above pressing mechanism;The present application solves the technical problems of slow filtering efficiency, poor filtering effect and easy dry grinding of existing equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, and particularly relates to a disc-shaped grid sand all-in-one machine. BACKGROUND

[0002] Industrial wastewater refers to wastewater, sewage and waste liquid generated in industrial production, which contains industrial production materials, intermediate products and products lost with water flow and pollutants generated in the production process. With the rapid development of industry, the types and quantity of wastewater are increasing rapidly, and the pollution of water bodies is becoming more and more widespread and serious, which threatens human health and safety. For environmental protection, the treatment of industrial wastewater is more important than the treatment of municipal wastewater. The filtration technology of industrial wastewater treatment is mainly used to remove suspended solid particles in wastewater to meet the requirements of subsequent treatment processes or directly discharge standards.

[0003] Patent No. CN201521018252.3 discloses a flat plate type solid-liquid separation equipment of triangular rotor. The flat plate type solid-liquid separation equipment of triangular rotor adopts a plurality of guide plates to form a carrying surface, and the guide plates form guide gaps between them. In this way, water can be automatically separated from solid treatment objects under the action of gravity. The design of the triangular rotor allows solid treatment objects to be automatically transported on the carrying surface. The triangular rotor has a similar axle distance between the long and short shafts, which makes the rotational speed of the triangular rotor uniform, and the rotational efficiency is high and the stability is good. The design of the pressing plate allows water that cannot be automatically separated from the solid treatment objects to be separated from the solid treatment objects by applying pressure, which improves the solid-liquid separation effect. The flat plate type solid-liquid separation equipment of the triangular rotor has the advantages of high efficiency, good stability and good separation effect.

[0004] However, in actual use, the inventor found that the existing filter structure usually uses dense grid bars or grid plates in combination with the rotor conveying for filtering. If the density of the grid bars is large, the liquid filtering efficiency will be slow, affecting the production efficiency. If the density of the grid bars is small, the filtering effect will be poor. Moreover, as the front-end solid-liquid seepage process proceeds, the water content in the rear-end sludge will decrease, which will cause dry grinding between the rear-end rotor and the grid bars, reducing the service life of the device, increasing the maintenance cost and use cost. SUMMARY

[0005] The invention aims at solving the problems of the prior art, by setting multiple filtering mechanisms cooperating with the conveying mechanism, improving the conveying efficiency of wastewater, so that the wastewater can be filtered in stages, the filtering effect is good and the efficiency is high, the filtrate filtered out is temporarily stored in the mixing mechanism to moisten the conveying mechanism, and the temporarily stored filtrate is mixed by the mixing mechanism and then overflowed into the separation mechanism for sand-water separation, the sludge filtered out is subjected to efficient squeezing filtration by the interlaced rotation of the corresponding squeezing rotors and conveying rotors, and the squeezing process is supplemented by the moistening mechanism to moisten the squeezing, thereby realizing the integrated sand screening function.

[0006] To solve the above technical problems, the technical scheme is as follows: a shield type sand screening integrated machine, comprising:

[0007] a rack provided with a liquid inlet and a sludge outlet at both ends, multiple filtering mechanisms arranged in the rack in a stepped manner and filtering large particle sludge in stages along the material flow direction, a separation mechanism arranged below each filtering mechanism and used for separating sand and water from the filtered filtrate, a mixing mechanism arranged between the filtering mechanism and the separation mechanism and used for mixing the filtrate, a conveying mechanism arranged above the filtering mechanism and extending to the mixing mechanism at the lower end and used for conveying the slurry on the filtering mechanism, a squeezing mechanism arranged above the filtering mechanism at the tail end and cooperating with the conveying mechanism to alternately squeeze the slurry on the filtering mechanism, and a moistening mechanism arranged above the squeezing mechanism and used for moistening the squeezing mechanism;

[0008] The squeezing mechanism comprises multiple bars arranged on the rack at equal intervals perpendicular to the material flow direction, multiple squeezing shafts arranged on the rack at equal intervals along the material flow direction and located directly above each conveying shaft of the conveying mechanism, and multiple squeezing rotors arranged between adjacent two bars and connected to the squeezing shafts; and the squeezing rotors on adjacent two squeezing shafts are interlaced when rotating, and the squeezing rotors on the squeezing shaft and the conveying rotors on the conveying shaft directly below are interlaced when rotating.

[0009] As a preferred, the mixing mechanism comprises a mixing barrel arranged directly below the filtering mechanism and used for supporting the filtrate to immerse the lower end of the conveying mechanism, a stirring assembly arranged in the mixing barrel and used for mixing the filtrate, and a transmission assembly arranged outside the mixing barrel and used for driving the stirring assembly to rotate.

[0010] As a preferred, the separation mechanism comprises a conical column arranged on the rack at the lower end and connected to the transmission assembly at the upper end, multiple guide strips arranged on the conical surface of the conical column and having a spiral structure, a sand discharge port formed on the lower end surface of the rack, and a liquid outlet port formed on the side surface of the rack.

[0011] Preferably, the transmission assembly comprises a transmission rod arranged at the top of the conical column, a first transmission gear arranged on the transmission rod, and a second transmission gear arranged on the stirring assembly and engaged with the first transmission gear.

[0012] Preferably, the stirring assembly comprises a first stirring shaft arranged in the mixing barrel and located at the front end of the material flow direction, a plurality of first stirring blades arranged on the first stirring shaft and used for forcing the filtrate to flow downward, a second stirring shaft arranged in the mixing barrel and located at the rear end of the material flow direction, a plurality of second stirring blades arranged on the first stirring shaft and used for forcing the filtrate to flow upward, and a flow guide cover arranged outside the second stirring blades.

[0013] Preferably, the mixing mechanism further comprises a flow guide funnel arranged above the separation mechanism and used for guiding and collecting the filtrate overflowing from the mixing barrel to the top of the separation mechanism.

[0014] Preferably, the wetting mechanism comprises a water suction pipe arranged on the frame and used for sucking the liquid in the separation mechanism, a spray head assembly arranged at the end of the water suction pipe and used for uniformly spraying the sucked liquid on the pressing mechanism, and a pre-filter arranged in the middle of the water suction pipe and used for filtering the sucked liquid.

[0015] Preferably, the spray head assembly comprises a water spraying shaft arranged on the water suction pipe, a plurality of water spraying pipes arranged on the outer wall of the water spraying shaft at equal intervals along the circumference of the water suction pipe, and a water spraying port arranged through each of the water spraying pipes and the water spraying shaft and communicated with the water suction pipe, and the water spraying port forces the water spraying shaft to rotate when spraying water.

[0016] Preferably, the conveying mechanism comprises a plurality of conveying rotation shafts arranged on the frame at equal intervals along the material flow direction, and a plurality of conveying rotors arranged between adjacent two screen plates of the filtering mechanism and connected to the conveying rotation shafts, and the conveying rotors on adjacent two conveying rotation shafts are arranged staggered.

[0017] Preferably, the pressing mechanism further comprises a pressing plate arranged on the frame and used for mounting the screen strips and the pressing rotation shafts, and a driving member arranged on the frame and used for driving the screen strips and the pressing rotation shafts to move up and down with the pressing plate.

[0018] The beneficial effects of the present application are as follows:

[0019] (1) The present application is provided with multiple filtering mechanisms cooperating with the conveying mechanism, so that the wastewater can be filtered in stages, the filtering effect is good and the efficiency is high, the filtrate filtered out is temporarily stored in the mixing mechanism to moisten the conveying mechanism, avoiding dry grinding phenomenon in the conveying process, and the temporarily stored filtrate is mixed by the mixing mechanism and then overflowed into the separation mechanism for sand-water separation, avoiding local fine sand accumulation on the separation mechanism, improving the separation effect, and at the same time, the filtered sludge is subjected to high-efficiency squeezing filtration by the upper and lower corresponding squeezing rotors and conveying rotors rotating alternately, the squeezing effect is good and the efficiency is high, the production efficiency is improved, and the squeezing process is supplemented by the moistening mechanism to moisten the squeezing, avoiding dry grinding phenomenon in the squeezing process, thereby realizing the integrated sand screening function;

[0020] (2) The present application is provided with a mixing barrel cooperating with a transmission assembly to drive the stirring assembly to rotate while separating sand and water in the separation mechanism, so that the first stirring blade and the second stirring blade of the stirring assembly rotate to force the filtrate in the mixing barrel to flow in a certain direction, realizing mixing while avoiding large fluctuations on the surface of the filtrate, thereby improving the effect of the moistening conveying mechanism, and at the same time, the flow guide cover is supplemented to avoid water leakage at the second stirring blade, improve the flow rate of the water flow to drive the fine sand at the bottom of the mixing barrel to move upward, improve the mixing effect, and at the same time, the uniformly stirred filtrate is overflowed onto the flow guide funnel and precisely guided to the upper end of the separation mechanism, improving the separation effect;

[0021] (3) The present application is provided with a tapered column cooperating with a flow guide strip to separate the light water in the filtrate along the horizontal direction and the heavy sand downward through the sand discharge port, realizing automatic separation of fine sand and water, solving the technical problems in the prior art that the mixed solution of fine sand and water is discharged into a sand settling tank for sedimentation, and then the sand-water mixed solution after sedimentation is transmitted to a screw press for squeezing, realizing the equipment investment and large equipment area for separating fine sand and water;

[0022] (4) The present application is provided with a water suction pipe to return the relatively pure water separated in the separation assembly to the water spraying nozzle to moisten the squeezing mechanism, so as to rotate the water spraying pipe with the water spraying shaft, thereby improving the uniformity of the water spraying nozzle and the moistening effect, saving water resources and improving economic benefits, and at the same time, the pre-filter is supplemented to filter the water entering the nozzle assembly, avoiding clogging of the nozzle assembly;

[0023] In summary, the device has the effects of fast filtering efficiency, good filtering effect and no dry grinding phenomenon, and is especially suitable for wastewater treatment technical field. BRIEF DESCRIPTION OF DRAWINGS

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a perspective view of a shield-type integrated sand-grinding machine provided by the present invention.

[0026] Figure 2 This is a top view of a shield-type integrated sand-grinding machine provided by the present invention.

[0027] Figure 3 Provided by the present invention Figure 2 A cross-sectional view along point A in the middle.

[0028] Figure 4 Provided by the present invention Figure 3 A magnified view of a section at point C.

[0029] Figure 5 Provided by the present invention Figure 2 Sectional view at point B along the middle.

[0030] Figure 6 This is a schematic diagram of the mixing mechanism provided by the present invention.

[0031] Figure 7 Provided by the present invention Figure 6 Schematic diagrams of the mixing mechanism in different directions.

[0032] Figure 8 This is a schematic diagram of the separation mechanism provided by the present invention.

[0033] Figure 9 This is a schematic diagram of the wetting mechanism provided by the present invention.

[0034] Figure 10 Provided by the present invention Figure 9 A magnified view of a section at point D.

[0035] Figure 11 This is a cross-sectional view of the nozzle assembly provided by the present invention. Detailed Implementation

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0037] Example 1

[0038] like Figures 1-2 as well as Figures 4-5 As shown, a shield-type grit sander includes:

[0039] The rack 1 is provided with a liquid inlet 11 and a sludge outlet 12, a plurality of filtering mechanisms 2 are arranged in the rack 1 in a stepped manner and are used for filtering large-particle sludge in a material flow direction, a plurality of separation mechanisms 3 are arranged below the filtering mechanisms 2 and are used for sand-water separation of filtered filtrate, a plurality of mixing mechanisms 4 are arranged between the filtering mechanisms 2 and the separation mechanisms 3 and are used for mixing the filtrate, a plurality of conveying mechanisms 5 are arranged on the filtering mechanisms 2 and extend to the mixing mechanisms 4 and are used for conveying slurry on the filtering mechanisms 2, a plurality of pressing mechanisms 6 are arranged above the last filtering mechanism 2 and are used for alternately pressing the slurry on the filtering mechanisms 2 in cooperation with the conveying mechanisms 5, and a plurality of wetting mechanisms 7 are arranged above the pressing mechanisms 6 and are used for wetting the pressing mechanisms 6;

[0040] The pressing mechanism 6 comprises a plurality of grid bars 61 arranged on the rack 1 at equal intervals in a direction perpendicular to the material flow direction, a plurality of pressing shafts 62 arranged on the rack 1 at equal intervals in the material flow direction and located above the conveying shafts 51 of the conveying mechanisms 5, respectively, and a plurality of pressing rotors 63 arranged between adjacent two grid bars 61 and connected to the pressing shafts 62, respectively; the pressing rotors 63 on adjacent two pressing shafts 62 are arranged in an interlaced manner when rotating, and the pressing rotors 63 on the pressing shafts 62 and the conveying rotors 52 on the conveying shafts 51 below are arranged in an interlaced manner when rotating.

[0041] In the embodiment, the conveying efficiency of wastewater is improved by arranging a plurality of filtering mechanisms 2 in cooperation with the conveying mechanisms 5, so that the wastewater is filtered in stages, the filtered filtrate is temporarily stored in the mixing mechanisms 4 to wet the conveying mechanisms 5, the dry grinding phenomenon in the conveying process is avoided, the temporarily stored filtrate is mixed by the mixing mechanisms 4 and then overflowed into the separation mechanisms 3 for sand-water separation, the filtered sludge is efficiently pressed by the interlaced rotation of the corresponding pressing rotors 63 and conveying rotors 52, the pressing process is wetted by the wetting mechanisms 7 during the pressing process, the dry grinding phenomenon in the pressing process is avoided, and the integrated sand-gritting function is realized.

[0042] In detail, first, the wastewater is introduced into the frame 1 through the liquid inlet 11, and then is sequentially conveyed to the plurality of filtering mechanisms 2 by the conveying mechanism 5 for graded filtration, and the filtrate and sludge are filtered out, and the filtering effect is good and the efficiency is high; then the separated filtrate is introduced into the mixing mechanism 4 for mixing, and then overflows into the separation mechanism 3 to separate water and fine sand, so as to avoid the accumulation of fine sand, and the separation effect is good, the water and fine sand are separated and collected, and the mixing mechanism 4 filled with filtrate is submerged in the lower end of the conveying mechanism 5 for wetting, so as to avoid the dry grinding phenomenon of the conveying rotor 52 on the conveying mechanism 5, and the service life is improved; finally, the separated sludge is introduced into the pressing mechanism 6 between the filtering mechanism 2, and after the residual filtrate in the sludge is pressed out under the alternating cooperation of the wetting mechanism 7 wetting the pressing rotor 63 and the conveying rotor 52, the sludge is discharged and collected through the sludge discharge port 12, the pressing effect is good and the efficiency is high, the production efficiency is improved, and the dry grinding phenomenon of the pressing rotor 63 on the pressing mechanism 6 is avoided, and the service life is further improved.

[0043] It should be noted that the filtering mechanism 2 is a plurality of grid plates 21, and the plurality of grid plates 21 are arranged on the frame 1 along the vertical direction of the material flow direction at equal intervals, and the frame 1 is provided with a mud guard 22 for guiding the wastewater introduced through the liquid inlet 11 to the front end of the plurality of grid plates 21;

[0044] The distance between the adjacent two grid plates 21 and the adjacent two grid strips 61 is 0.3-0.8mm, and the thickness of the conveying rotor 52 and the pressing rotor 63 is 0.1-0.7mm, preferably the distance between the adjacent two grid plates 21 and the adjacent two grid strips 61 is 0.5mm, and the thickness of the conveying rotor 52 and the pressing rotor 63 is 0.3mm, which not only ensures the moderate strength of the rotor 24, but also improves the density of the plurality of grid plates 21 and the plurality of grid strips 61, and further separates the fine sand smaller than 0.5mm.

[0045] Further, as shown in Figures 5-8 The mixing mechanism 4 includes a mixing barrel 41 arranged directly below the filtering mechanism 2 and used for supporting the lower end of the conveying mechanism 5, a stirring assembly 42 arranged in the mixing barrel 41 and used for mixing the filtrate, and a transmission assembly 43 arranged outside the mixing barrel 41 and used for driving the stirring assembly 42 to rotate.

[0046] In this embodiment, by arranging the mixing barrel 41 cooperating with the transmission assembly 43, the stirring assembly 42 is rotated to stir the supported filtrate uniformly, and then the filtrate overflows to the lower end of the conveying mechanism 5 for wetting and overflows into the separation mechanism 3 for sand-water separation.

[0047] Further, as shown in Figure 5 and Figure 8As shown, the separating mechanism 3 comprises a conical column 31 rotatably arranged at the lower end of the frame 1 and connected to the transmission assembly 43 at the upper end, a plurality of guide strips 32 arranged on the conical surface of the conical column 31 and having a spiral structure, a sand discharge port 33 formed on the lower end surface of the frame 1, and a liquid outlet 34 formed on the side surface of the frame 1.

[0048] In the present embodiment, by arranging the conical column 31 cooperating with the guide strips 32, the light water in the filtrate is horizontally thrown out according to the different specific gravities of the sand and water, and the heavier sand is discharged downward through the sand discharge port 33, thereby realizing automatic separation of fine sand and water, and solving the technical problems of the prior art, such as large investment and large equipment footprint, in the process of separating fine sand and water.

[0049] It should be noted that the size of the liquid outlet 34 is matched with the height of the conical column 31, so as to facilitate the collection of the separated water; in addition, the sand discharge port 33 has an opening structure that is large at the top and small at the bottom, so as to facilitate the smooth discharge of the fine sand slurry.

[0050] Further, as shown in the figure, Figures 5-8 the transmission assembly 43 comprises a transmission rod 431 arranged at the top of the conical column 31, a first transmission gear 432 arranged on the transmission rod 431, and a second transmission gear 433 arranged on the stirring assembly 42 and engaged with the first transmission gear 432.

[0051] In the present embodiment, by arranging the transmission rod 431 cooperating with the first transmission gear 432 and the second transmission gear 433, the stirring assembly 42 is driven to stir and mix the filtrate in the mixing barrel 41 while the separating mechanism 3 separates the filtrate.

[0052] It should be noted that the diameter of the second transmission gear 433 is much larger than that of the first transmission gear 432, thereby reducing the rotation speed of the stirring assembly 42, and further avoiding the occurrence of large fluctuations on the surface of the filtrate in the mixing barrel 41, which affects the immersion effect of the conveying mechanism 5, and the wetting effect is better.

[0053] Further, as shown in the figure, Figures 5-6 the stirring assembly 42 comprises a first stirring shaft 421 rotatably arranged in the mixing barrel 41 and located at the front end of the material flow direction, a plurality of first stirring blades 422 arranged at intervals on the first stirring shaft 421 and used to force the filtrate to flow downward, a second stirring shaft 423 rotatably arranged in the mixing barrel 41 and located at the rear end of the material flow direction, a plurality of second stirring blades 424 arranged at intervals on the first stirring shaft 421 and used to force the filtrate to flow upward, and a flow guide cover 425 arranged outside the second stirring blades 424.

[0054] In the embodiment, by setting the first stirring blade 422 and the second stirring blade 424 to rotate with the first stirring shaft 421 and the second stirring shaft 423 respectively, the filtrate in the mixing barrel 41 flows in a certain direction, realizing mixing while avoiding large fluctuations on the surface of the filtrate, thereby improving the effect of the wet conveying mechanism 5, and the flow guide cover 425 is used to avoid water leakage at the second stirring blade 424, improve the flow rate of the water flow to drive the fine sand at the bottom of the mixing barrel 41 to move upward.

[0055] In detail, in use, the first stirring blade 422 filters the filtrate with a high sand content at the front end of the material flow direction and rapidly guides it to the bottom of the mixing barrel 41, avoiding too much fine sand from flowing out with the overflow of the mixing barrel 41, and then the second stirring blade 424 cooperates with the flow guide cover 425 to guide the fine sand at the bottom of the mixing barrel 41 upward with the water flow, so that the filtrate with a low sand content at the rear end of the material flow direction is mixed, improving the mixing effect while avoiding the phenomenon of fine sand sinking to the bottom.

[0056] It should be noted that the diameter of the flow guide cover 425 gradually increases from top to bottom, improving the extraction area and extraction effect of the sediment at the bottom of the mixing barrel 41, and improving the effect of the sediment being sprayed upward with the water flow through the flow guide cover 425.

[0057] Further, as shown in Figures 5-6 , the mixing mechanism 4 further includes a flow guide funnel 44 arranged above the separation mechanism 3 and used to guide and collect the overflow of the mixing barrel 41 after mixing to the top of the separation mechanism 3.

[0058] In the embodiment, by setting the flow guide funnel 44 to guide the filtrate to accurately fall on the upper end of the separation mechanism 3, the separation effect is improved.

[0059] In detail, the top end of the conical column 31 is arranged corresponding to the corresponding flow guide funnel 44, so that the overflow of the filtrate in the mixing barrel 41 is at the top end of the conical column 31, and then the filtrate flows downward through the plurality of flow guide strips 32 to accelerate the sand-water separation.

[0060] It should be noted that the number of separation mechanisms 3 is multiple, and corresponding, the number of stirring assemblies 42 and flow guide funnels 44 is multiple, and the plurality of flow guide funnels 44 below the same mixing barrel 41 are integrally formed to avoid leakage of the filtrate, which improves the separation effect while improving the mixing effect.

[0061] Further, as shown in Figure 1 and Figures 9-11As shown, the wetting mechanism 7 comprises a water suction pipe 71 arranged on the frame 1 and used for extracting liquid in the separating mechanism 3, a spray head assembly 72 arranged at the end of the water suction pipe 71 and used for uniformly spraying the extracted liquid on the squeezing mechanism 6, and a pre-filter 73 arranged in the middle of the water suction pipe 71 and used for filtering the extracted liquid.

[0062] In the embodiment, the relatively pure water separated in the separating assembly is returned to the squeezing assembly for wetting by arranging the water suction pipe 71 matched with the spray head assembly 72, water resource is saved, economic benefit is improved, meanwhile, the water flowing into the spray head assembly 72 is filtered by the pre-filter 73, and the spray head assembly 72 is prevented from being blocked.

[0063] It should be noted that the water suction pipe 71 forms high-pressure water flow by matching with a water suction pump, and the water suction pipe 71 and the installation manner are prior art, the pre-filter 73 for filtering fine sand and the installation manner are also prior art, and details are not described herein.

[0064] Further, as shown in the figure, Figures 10-11 The spray head assembly 72 comprises a water spraying shaft 721 rotationally arranged on the water suction pipe 71, a plurality of water spraying pipes 722 equidistantly arranged on the outer wall of the water spraying shaft 721 along the circumference of the water suction pipe 71, and a water spraying port 723 penetratingly arranged in each water spraying pipe 722 and the water spraying shaft 721 and communicated with the water suction pipe 71, and the water spraying port 723 forces the water spraying shaft 721 to rotate when spraying water.

[0065] In the embodiment, the water spraying pipe 722 is forced to rotate with the water spraying shaft 721 when the water spraying port 723 sprays water to wet the squeezing mechanism 6, and the uniformity of the spraying of the water spraying port 723 is improved, and the wetting effect is improved.

[0066] It should be noted that the water outlet end of the water spraying port 723 is a tapered structure with gradually decreasing diameter, so that the high-pressure water flow is dispersed when sprayed, and the uniformity of the spraying is further improved.

[0067] Further, as shown in the figure, Figures 3-5 The conveying mechanism 5 comprises a plurality of conveying rotation shafts 51 equidistantly rotationally arranged on the frame 1 along the material flow direction, and a plurality of conveying rotors 52 respectively arranged between adjacent two grid plates 21 of the filtering mechanism 2 and connected to the conveying rotation shafts 51, and the conveying rotors 52 on adjacent two conveying rotation shafts 51 are arranged in staggered manner.

[0068] In the embodiment, the conveying rotors 52 arranged in staggered manner realize full coverage cleaning of the grid plates 21, and prevent the grid plates 21 from being blocked, meanwhile, the conveying rotors 52 arranged in staggered manner realize step-by-step pushing of the material forward, improve the material flow efficiency, and thus realize efficient filtering.

[0069] It should be noted that the adjacent two conveying rotors 52 and the adjacent two pressing rotors 63 are provided with support members 53 to position the distance, improve the stability of the conveying rotor 52 and the pressing rotor 63 with small thickness during rotation, ensure the constant interval and stable work, and avoid the technical problem that the small thickness leads to insufficient rigidity to cause the cleaning work to be unable to be normally performed.

[0070] The specific driving mode of the plurality of conveying shafts 51 and the plurality of pressing shafts 62 is not limited in the application, which can be driven by a motor to drive a chain and sprocket to synchronously transmit, or can use gear transmission, belt transmission, etc. The specific structure of the conveying rotor 52 and the pressing rotor 63 is not limited, which can be a triangular structure, an elliptical structure, etc. The application preferably adopts an elliptical structure to improve the external extrusion area when the conveying rotor 52 and the pressing rotor 63 cooperate with each other, thereby improving the extrusion effect of the slurry.

[0071] Further, as shown in Figures 2-5 The pressing mechanism 6 further includes an extrusion plate 64 rotatably arranged on the rack 1 and used for mounting the grid 61 and the pressing shaft 62, and a driving member 65 arranged on the rack 1 and used for driving the grid 61 and the pressing shaft 62 to move up and down with the extrusion plate 64.

[0072] In the embodiment, the driving member 65 drives the extrusion plate 64 to reciprocatingly move up and down. The upward movement of the grid 61 and the pressing rotor 63 increases the sludge port, reduces the interference when the conveying mechanism 5 conveys the sludge, improves the conveying efficiency, and fastens the filtering efficiency. The downward movement of the grid 61 and the pressing rotor 63 reduces the sludge port, increases the extrusion force of the sludge, improves the extrusion effect of the sludge, and improves the filtering effect, thereby further improving the production efficiency.

[0073] It should be noted that the driving member 65 can be a pneumatic cylinder or an oil cylinder, and the driving member 65 itself and the mounting mode are prior art, which will not be described in detail.

[0074] Working process:

[0075] Firstly, the wastewater is introduced into the rack 1 through the liquid inlet 11, and the wastewater is sequentially conveyed to the plurality of filtering mechanisms 2 by the conveying mechanism 5 to be filtered in stages to filter out the filtrate and the sludge.

[0076] Then, the separated filtrate is introduced into the mixing mechanism 4 to be mixed and overflowed into the separation mechanism 3 to separate water and fine sand, and the mixing mechanism 4 filled with the filtrate is immersed in the lower end of the conveying mechanism 5 to be moistened.

[0077] Then, the separated sludge is introduced into the pressing mechanism 6 between the filtering mechanisms 2, and the residual filtrate in the sludge is pressed out under the alternating cooperation of the pressing rotor 63 and the conveying rotor 52 which are moistened by the moistening mechanism 7.

[0078] Finally, the separated water, fine sand and sludge are collected separately.

[0079] In the description of the present application, it should be understood that the terms "front", "rear", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or component referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0080] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0081] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any changes or replacements easily thought of by those skilled in the art under the technical hints of the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A shield gate sand all-in-one machine, characterized by, The utility model relates to a sludge filter, which comprises a rack (1) provided with liquid inlet (11) and sludge outlet (12) at both ends, a plurality of filtering mechanisms (2) arranged in a stepped manner in the rack (1) and filtering large-particle sludge in stages along the material flow direction, a plurality of separation mechanisms (3) arranged below each filtering mechanism (2) and used for sand-water separation of filtered filtrate, a plurality of mixing mechanisms (4) arranged between the filtering mechanism (2) and the separation mechanism (3) and used for mixing the filtrate, a plurality of conveying mechanisms (5) arranged on the filtering mechanism (2) and extending to the mixing mechanism (4) at the lower end and used for conveying slurry on the filtering mechanism (2), a plurality of pressing mechanisms (6) arranged above the last filtering mechanism (2) and cooperating with the conveying mechanism (5) to alternately press the slurry on the filtering mechanism (2), and a plurality of wetting mechanisms (7) arranged above the pressing mechanism (6) and used for wetting the pressing mechanism (6). The pressing mechanism (6) comprises a plurality of grid bars (61) arranged on the rack (1) at equal intervals in a direction perpendicular to the material flow direction, a plurality of pressing shafts (62) arranged on the rack (1) at equal intervals in the material flow direction and located directly above each conveying shaft (51) of the conveying mechanism (5), and a plurality of pressing rotors (63) arranged between adjacent two grid bars (61) and connected to the pressing shaft (62); the pressing rotors (63) on adjacent two pressing shafts (62) are arranged in an interlaced manner when rotating, and the pressing rotors (63) on the pressing shaft (62) and the conveying rotors (52) on the conveying shaft (51) directly below the pressing shaft (62) are arranged in an interlaced manner when rotating. The mixing mechanism (4) comprises a mixing barrel (41) arranged directly below the filtering mechanism (2) and used for supporting the filtrate to immerse the lower end of the conveying mechanism (5), a stirring assembly (42) arranged in the mixing barrel (41) and used for mixing the filtrate, and a transmission assembly (43) arranged outside the mixing barrel (41) and used for driving the stirring assembly (42) to rotate. The stirring assembly (42) comprises a first stirring shaft (421) arranged in rotation in the mixing barrel (41) and located at the front end in the material flow direction, a plurality of first stirring blades (422) arranged at intervals on the first stirring shaft (421) and used for forcing the filtrate to flow downward, a second stirring shaft (423) arranged in rotation in the mixing barrel (41) and located at the rear end in the material flow direction, a plurality of second stirring blades (424) arranged at intervals on the first stirring shaft (421) and used for forcing the filtrate to flow upward, and a flow guide cover (425) arranged outside the second stirring blade (424). ​ The wetting mechanism (7) comprises a water suction pipe (71) arranged on the frame (1) and used for sucking liquid in the separating mechanism (3), a spray head assembly (72) arranged at the end of the water suction pipe (71) and used for uniformly spraying the sucked liquid on the squeezing mechanism (6), and a pre-filter (73) arranged in the middle of the water suction pipe (71) and used for filtering the sucked liquid.

2. The integrated machine of claim 1, wherein, The separating mechanism (3) comprises a conical column (31) rotatably arranged at the lower end of the frame (1) and connected to the driving assembly (43) at the upper end, a plurality of flow guide strips (32) arranged on the conical surface of the conical column (31) and having a spiral structure, a sand discharge port (33) formed on the lower end surface of the frame (1), and a liquid outlet (34) formed on the side surface of the frame (1).

3. The integrated machine of claim 2, wherein, The driving assembly (43) comprises a driving rod (431) arranged at the top of the conical column (31) at the lower end, a first driving gear (432) arranged on the driving rod (431), and a second driving gear (433) arranged on the stirring assembly (42) and engaged with the first driving gear (432).

4. The integrated machine of claim 1, wherein, The mixing mechanism (4) further comprises a flow guide funnel (44) arranged above the separating mechanism (3) and used for guiding and collecting the filtrate overflowing from the mixing barrel (41) after mixing to the top of the separating mechanism (3).

5. The integrated machine for making a shell and sand barrier according to claim 1, wherein The spray head assembly (72) comprises a water spraying shaft (721) rotatably arranged on the water suction pipe (71), a plurality of water spraying pipes (722) arranged on the outer wall of the water spraying shaft (721) at equal intervals along the circumference of the water suction pipe (71), and a water spraying port (723) penetratingly arranged in each water spraying pipe (722) and the water spraying shaft (721) and communicating with the water suction pipe (71), and the water spraying port (723) forces the water spraying shaft (721) to rotate when spraying water.

6. The integrated device of claim 1, wherein, The conveying mechanism (5) comprises a plurality of conveying rotation shafts (51) rotatably arranged on the frame (1) at equal intervals along the direction of material flow, and a plurality of conveying rotors (52) respectively arranged between adjacent two screen plates (21) of the filtering mechanism (2) and connected to the conveying rotation shafts (51), and the conveying rotors (52) on adjacent two conveying rotation shafts (51) are arranged in a staggered manner when rotating.

7. The integrated machine of claim 1, wherein, The squeezing mechanism (6) further comprises a squeezing plate (64) rotatably arranged on the frame (1) and used for mounting the grid bars (61) and the squeezing rotation shaft (62), and a driving member (65) arranged on the frame (1) and used for driving the grid bars (61) and the squeezing rotation shaft (62) to move up and down with the squeezing plate (64).

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