Assembly type two-stage filtering sand settling and discharging all-in-one machine device

Abstract

The utility model discloses an assembly type two-stage filtering sand setting and discharging all-in-one machine device which comprises a box body, a first filtering mechanism arranged in the box body, a second filtering mechanism partially arranged in the box body and a sand setting and discharging mechanism arranged between the first filtering mechanism and the second filtering mechanism. A feeding port is formed in the position, close to the top, of one end, in the first horizontal direction, of the box body, and a liquid discharging port is formed in the other end, in the first horizontal direction, of the box body. The first filtering mechanism comprises a plurality of grid bars extending in the first horizontal direction and a rake tooth plate movably arranged above the grid bars. And the filtering size of the second filtering mechanism is smaller than the gap of the grid bars. The box body is provided with a sand collecting pit below the first filtering mechanism, and the sand setting and discharging mechanism comprises a sand discharging screw rod and a sand lifting screw rod. The assembly type two-stage filtration sand setting and discharging all-in-one machine device integrates the functions of coarse filtration, sand setting and discharging and fine filtration, and is convenient to install.

Description

TECHNICAL FIELD

[0001] The present specification relates to the technical field of sewage treatment, and in particular to an assembled two-stage filter sand setting and discharging integrated machine device. BACKGROUND

[0002] In the field of organic waste treatment such as slurry treatment of town excrement sewage and slurry treatment of kitchen waste, or in the field of treatment of other slurry containing impurities, because the sewage slurry contains a large amount of various garbage impurities and other fault substances, the sewage slurry usually needs to be pretreated, that is, to be fully filtered to remove various garbage impurities, that is, fault substances, so as to ensure that the subsequent process treatment stage of the sewage slurry is not disturbed by the garbage fault substances and the treatment system can operate normally.

[0003] The commonly used equipment for slurry pretreatment is usually a grid product, and the commonly used grid is a rake-tooth grid installed obliquely. The rake-tooth grid installed obliquely usually needs to be installed in a channel, and the installation height of the grid is high, so the installation is difficult, and it is not convenient to install and use in some space-limited positions, and it is also difficult to maintain and maintain. It is also difficult to integrate into some mobile skid-mounted devices. In addition, the grid is not easy to seal and operate, and it is not convenient to deodorize. In addition, the grid installed obliquely has a large filtering resistance and low filtering efficiency when filtering the sewage slurry because of the liquid level difference before and after the grid.

[0004] In addition, for the case where the sewage contains a large amount of sand, if the commonly used grid is used, the coarse filtration cannot remove the sand particles, and the grid used for fine filtration is easily blocked. CONTENT OF THE INVENTION

[0005] In view of the deficiencies of the prior art, an object of the present specification is to provide an assembled two-stage filter sand setting and discharging integrated machine device, which integrates the functions of coarse filtration, sand setting and discharging, and fine filtration, and is convenient to install.

[0006] To achieve the above-mentioned object, the embodiment of the present specification provides an assembled two-stage filter sand setting and discharging integrated machine device, comprising:

[0007] A box body is provided with a feed inlet at one end of a first horizontal direction near the top, and a liquid discharge outlet is provided at the other end of the first horizontal direction;

[0008] A first filtering mechanism is arranged in the box, the first filtering mechanism comprises a plurality of bars extending along the first horizontal direction, and a rake plate movably arranged above the bars; the bars are fixedly arranged in the box, one end of the bars is arranged near and below the feeding port; the box is provided with a first discharging port below the end of the bars away from the feeding port; the rake plate is provided with a plurality of first tines for extending into the gaps of the bars, and the moving direction of the rake plate matched with the bars is from the feeding port to the first discharging port;

[0009] A second filtering mechanism is partially arranged in the box, the second filtering mechanism is located between the first filtering mechanism and the liquid outlet; the filtering size of the second filtering mechanism is smaller than the gaps of the bars; the second filtering mechanism is provided with a second discharging port near the top;

[0010] A sand setting and discharging mechanism is arranged between the first filtering mechanism and the second filtering mechanism, the box is provided with a sand collecting pit below the first filtering mechanism, the sand setting and discharging mechanism comprises a sand discharging screw and a sand lifting screw, the sand discharging screw is installed at the bottom of the box and extends along the first horizontal direction, and is used for transporting the sand particles at the bottom of the box to the sand collecting pit; the sand lifting screw is arranged obliquely, one end of the sand lifting screw is located in the sand collecting pit, the other end of the sand lifting screw extends out of the box and is provided with a third discharging port, and is used for transporting the sand particles in the sand collecting pit to outside of the box.

[0011] As a preferred embodiment, the second filtering mechanism further comprises a first driving member, a conveying assembly and a filtering assembly, the first driving member is in transmission connection with the conveying assembly and the filtering assembly, and is used for providing rotating power; the conveying assembly is used for conveying the impurities filtered by the filtering assembly to the second discharging port; the filtering assembly comprises a grid rolling frame in transmission connection with the conveying assembly, and a first filtering member with filtering holes connected to the grid rolling frame, the first filtering member is circumferentially distributed around the axis of the conveying assembly, and adjacent first filtering members are connected to each other.

[0012] As a preferred embodiment, the second filtering mechanism further comprises a cleaning assembly, the cleaning assembly comprises a flushing spray rod extending along the extending direction of the first filtering member, the flushing spray rod is located outside the filtering assembly, the spray head on the flushing spray rod faces the first filtering member of the filtering assembly, and the flushing spray rod is used for flushing the impurities trapped on the first filtering member to the conveying assembly located at the central position in the grid rolling frame.

[0013] As a preferred implementation form, the second filtering mechanism is provided with a squeezing dehydration section upstream of the second discharge port; the conveying assembly is movably connected with a first leg, which makes the axis of the conveying assembly and the filtering assembly form a preset angle with the horizontal plane; a detachable sealing cover plate is connected to the part of the filtering assembly extending out of the box.

[0014] As a preferred implementation form, the second filtering mechanism comprises a rack and a second filtering piece, the rack is obliquely arranged and fixedly connected with the box, and the rack is provided with the second discharge port at a position close to the top; the second filtering piece is rotatably connected with the rack, and is used to transport the grid slags to the top of the rack and then discharge the grid slags through the second discharge port.

[0015] As a preferred implementation form, part of the rack extends out of the box, and the part of the rack extending out of the box is sealingly arranged; the second discharge port is arranged at a part of the rack close to the top and located on the side of the rack away from the first filtering mechanism.

[0016] As a preferred implementation form, the gap of the grid bars is 10 mm to 25 mm; the filtering pore size of the first filtering piece or the second filtering piece is 2 mm to 8 mm.

[0017] As a preferred implementation form, a plurality of the grid bars are spaced apart in a second horizontal direction, the first horizontal direction and the second horizontal direction are both parallel to the horizontal plane and perpendicular to each other; a plurality of the first tines are spaced apart in the second horizontal direction; the box is provided with two groups of first rotating assemblies, the two groups of first rotating assemblies are spaced apart in the second horizontal direction and arranged on the inner wall surface of the box; the first rotating assembly comprises a driving sprocket, a driven sprocket, and a first chain sleeved outside the driving sprocket and the driven sprocket, the first chain is located above the grid bars; the driving sprocket and the driven sprocket are spaced apart in the first horizontal direction; the tine plate is fixedly connected with the first chains of the two groups of first rotating assemblies on both sides of the tine plate in the second horizontal direction; the driving sprocket is connected with a second driving piece, the second driving piece is used to drive the driving sprocket to rotate, so that the moving direction of the tine plate cooperating with the grid bars is the direction from the feeding port to the first discharge port.

[0018] As a preferred implementation form, the first filtering mechanism further comprises a slag blocking rake arranged above the first discharge port, the slag blocking rake is located above the first chain, and the slag blocking rake is provided with a plurality of second tines on the side facing the first chain, the plurality of second tines are spaced apart in the second horizontal direction, and the second tines are used to extend into the gap between adjacent first tines.

[0019] As a preferred implementation, the sand collecting pit is V-shaped and extends along the second horizontal direction, and the sand discharging screw is located above the sand collecting pit; one end of the sand discharging screw near the feeding port is connected with a third driving member; the top end of the sand lifting screw is connected with a fourth driving member; the bottom of the box body is externally provided with a plurality of second supporting legs extending in the vertical direction, for supporting the box body on the working surface. Advantages

[0020] The assembled double-stage filtering sand collecting and discharging all-in-one machine device provided by the embodiment sets a first filtering mechanism for rough filtering, sets a sand collecting and discharging mechanism for sand collecting and discharging of the rough filtered wastewater, and sets a second filtering mechanism for fine filtering of the sand collected and discharged wastewater, thereby integrating the functions of rough filtering, sand collecting and discharging, and fine filtering, and being especially suitable for treating wastewater with large sand content. By setting the box body, the first filtering mechanism, the second filtering mechanism, and the sand collecting and discharging mechanism are integrated, so that the overall structure of the device is more compact, and installation is facilitated.

[0021] Specific embodiments of the present application are described in detail below with reference to the following description and to the attached drawings. The principles of the present application can be employed in any manner without departing from the spirit of the application.

[0022] Features described and / or illustrated with respect to one implementation can be used in one or more other implementations in the same or similar manner, in combination with or in place of features in other implementations.

[0023] It should be emphasized that the term "comprises / comprising" when used in this specification is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only illustrate some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0025] Figure 1 FIG. 1 is a structural schematic diagram of an assembled double-stage filtering sand collecting and discharging all-in-one machine device provided in the embodiment;

[0026] Figure 2 FIG. 2 is a structural schematic diagram of another assembled double-stage filtering sand collecting and discharging all-in-one machine device provided in the embodiment;

[0027] Figure 3 is a left view of Figure 2 ;

[0028] Figure 4 is a partial enlarged structural schematic view of a grid and a support provided in the embodiment;

[0029] Figure 5 is a structural schematic view of the grid on the harrow plate and the support facing each other in the embodiment;

[0030] Figure 6 is a sectional schematic view of a grid provided in the embodiment;

[0031] Figure 7 is an enlarged structural schematic view of the harrow plate and the slag baffle facing each other in the embodiment;

[0032] Figure 8 is a structural schematic view of a second filtering member provided in the embodiment.

[0033] BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 1, box; 11, feeding port; 12, liquid discharge port; 13, first discharge port; 14, sand collecting pit;

[0035] 2, first filtering mechanism; 21, grid; 211, upper half; 212, middle part; 213, lower half; 22, harrow plate; 221, first harrow tooth; 23, driving sprocket; 24, driven sprocket; 25, first chain; 26, second driving member; 27, slag baffle; 271, second harrow tooth; 28, support; 29, odor treatment port; 210, maintenance opening; 201, baffle; 202, flushing port;

[0036] 3, sand collecting and discharging mechanism; 31, sand discharging screw; 32, sand lifting screw; 33, third discharge port; 34, third driving member; 35, fourth driving member;

[0037] 4, second filtering mechanism; 41, first driving member; 42, conveying assembly; 43, filtering assembly; 44, flushing spray rod; 45, extrusion dehydration section; 46, second discharge port; 47, first supporting leg; 48, sealing cover plate; 49, machine frame; 410, second filtering member; 411, fifth driving member; 412, sixth driving member;

[0038] 5, second supporting leg; 6, press; 61, seventh driving member; 62, fourth discharge port; 7, working surface;

[0039] X, first horizontal direction; Y, second horizontal direction; Z, vertical direction. DETAILED DESCRIPTION

[0040] In order to make the technical scheme in the present application better understood, the technical scheme in the present application will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work should belong to the scope of protection of the present application.

[0041] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can be another element interposed. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be another element interposed. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] Please refer to Figures 1 to 8 The embodiment of the present application provides an assembled two-stage filtering, sand setting and discharging integrated machine device, which comprises a box body 1, a first filtering mechanism 2, a second filtering mechanism 4 and a sand setting and discharging mechanism 3.

[0044] As shown in Figure 1 The box body 1 is provided with a feeding port 11 at one end of the first horizontal direction X near the top, which is used for feeding sewage or slurry to be filtered into the box body 1. The box body 1 is provided with a liquid discharge port 12 at the other end of the first horizontal direction X, which is used for discharging the liquid filtered and sand removed by the first filtering mechanism 2, the sand setting and discharging mechanism 3 and the second filtering mechanism 4. The box body 1 adopts a fully enclosed structure, which is more conducive to preventing odor from leaking out, and is also convenient for operation observation and maintenance and repair of the device.

[0045] The first filtering mechanism 2 is arranged in the box 1. The first filtering mechanism 2 comprises a plurality of bars 21 extending along the first horizontal direction X, and a rake plate 22 movably arranged above the bars 21. The bars 21 are fixedly arranged in the box 1, and one end of the bars 21 is arranged close to and below the feeding port 11. The box 1 is provided with a first discharging port 13 below the end of the bars 21 away from the feeding port 11, for discharging solid impurities filtered by the first filtering mechanism 2. The rake plate 22 is provided with a plurality of first tines 221 for extending into the gaps of the bars 21, and the moving direction of the rake plate 22 cooperating with the bars 21 is from the feeding port 11 to the first discharging port 13. The height of the liquid discharging port 12 is lower than the height of the bars 21.

[0046] Part of the second filtering mechanism 4 is arranged in the box 1. The second filtering mechanism 4 is located between the first filtering mechanism 2 and the liquid discharging port 12. The filtering size of the second filtering mechanism 4 is smaller than the gap of the bars 21, so that the second filtering mechanism 4 can further filter the product filtered by the first filtering mechanism 2. The second filtering mechanism 4 is provided with a second discharging port 46 close to the top, for discharging solid impurities filtered by the second filtering mechanism 4.

[0047] The sand setting and discharging mechanism 3 is arranged between the first filtering mechanism 2 and the second filtering mechanism 4. The box 1 is provided with a sand collecting pit 14 below the first filtering mechanism 2. The sand setting and discharging mechanism 3 comprises a sand discharging screw 31 and a sand lifting screw 32. The sand discharging screw 31 is installed at the bottom of the box 1 and extends along the first horizontal direction X, for transporting sand particles at the bottom of the box 1 to the sand collecting pit 14. The sand lifting screw 32 is arranged obliquely, one end of the sand lifting screw 32 is located in the sand collecting pit 14, and the other end extends out of the box 1 and is provided with a third discharging port 33. The sand lifting screw 32 is used for transporting sand particles in the sand collecting pit 14 to the third discharging port 33, so as to discharge out of the box 1.

[0048] The assembled double-stage filtering sand setting and discharging all-in-one machine device provided by the embodiment sets the first filtering mechanism 2 for rough filtering, sets the sand setting and discharging mechanism 3 for setting and discharging sand of the wastewater after rough filtering, and sets the second filtering mechanism 4 for fine filtering of the wastewater after sand setting and discharging, so as to integrate the functions of rough filtering, sand setting and discharging, and fine filtering, and is especially suitable for treating wastewater with large sand content. By arranging the box 1, the first filtering mechanism 2, the second filtering mechanism 4, and the sand setting and discharging mechanism 3 are integrated on the box 1, and the integrated arrangement is adopted, so that the overall structure of the device is more compact, the box 1 can be conveniently and quickly installed at a place where slurry filtering is needed, and after installation is completed, the assembled double-stage filtering sand setting and discharging all-in-one machine device can start working. The box 1 type structure is adopted, and channel installation is not needed, so that the use and installation are very convenient, and the device is also suitable for system integration and installation with other equipment on a skid-mounted structure.

[0049] The horizontal installation of the grid bars 21 of the first filtering mechanism 2 eliminates the problem of overcoming the resistance caused by the liquid level difference before and after the grid during filtering, and the filtering resistance is small, the filtering speed is fast, the filtering efficiency is high, and the filtering mechanism can be suitable for the working condition of rapid discharge of the slurry to be filtered in the front end. The first filtering mechanism 2 can remove the coarse garbage in the slurry or sewage, but there are still many garbage components with a particle size range smaller than the gap between the grid bars 21 passing through the grid bars 21 into the lower part of the box 1, or the fiber and other long strip-shaped garbage components not intercepted by the first filtering mechanism 2 remaining in the slurry or sewage, which need to be further removed by the sand setting and discharging mechanism 3 and the second filtering mechanism 4.

[0050] The second filtering mechanism 4 has high filtering precision, and the sand setting and discharging mechanism 3 is arranged upstream of the second filtering mechanism 4, so that the sand in the sewage can be removed first to avoid the sand from blocking or damaging the second filtering mechanism 4.

[0051] In the embodiment, the second filtering mechanism 4 can adopt a drum-shaped grid structure, as shown in Figure 1 The second filtering mechanism 4 further includes a first driving member 41, a conveying assembly 42, and a filtering assembly 43. The first driving member 41 is in transmission connection with the conveying assembly 42 and the filtering assembly 43, and is used to provide rotating power. The conveying assembly 42 is used to convey the impurities filtered by the filtering assembly 43 to a second discharge port 46. The filtering assembly 43 includes a grid rolling frame in transmission connection with the conveying assembly 42, and a first filtering member with filtering holes connected to the grid rolling frame. The first filtering member is circumferentially distributed around the axis of the conveying assembly 42, and adjacent first filtering members are connected to each other.

[0052] Specifically, the second filtering mechanism 4 further includes a cleaning assembly, which includes a flushing spray rod 44 extending along the extension direction of the first filtering member. The flushing spray rod 44 is located outside the filtering assembly 43, the spray head on the flushing spray rod 44 faces the first filtering member of the filtering assembly 43, and the flushing spray rod 44 is used to flush the impurities trapped on the first filtering member to the conveying assembly 42 located at the central position in the grid rolling frame.

[0053] Preferably, the second filtering mechanism 4 is provided with a squeezing dehydration section 45 upstream of the second discharge port 46. The conveying assembly 42 is movably connected with a first leg 47, and the first leg 47 makes the axis of the conveying assembly 42 and the filtering assembly 43 form a preset angle with the horizontal plane. The part of the filtering assembly 43 extending out of the box 1 is connected with a detachable sealing cover plate 48, which can seal the exposed part of the second filtering mechanism 4 extending out of the box 1 to avoid odor leakage. The second filtering mechanism 4 integrates the functions of filtering, grid residue lifting, and squeezing dehydration, and the solid content of the discharged material reaches more than 35%, so that a separate press machine is not needed, and the second discharge port 46 can be directly connected with a garbage can.

[0054] In another embodiment, as shown in Figure 2 The second filtering mechanism 4 comprises a frame 49 and a second filtering member 410. The frame 49 is obliquely arranged and fixedly connected to the tank 1. The frame 49 is provided with a second discharge port 46 at a position close to the top. The second filtering member 410 is rotatably connected to the frame 49 and used to transport the grid sludge to the top of the frame 49 and then discharge the grid sludge through the second discharge port 46. The aperture or gap of the second filtering member 410 is smaller than the gap of the grid bars 21. Although the frame 49 of the second filtering mechanism 4 is obliquely arranged, the solid impurities in the slurry are significantly reduced after the filtering of the first filtering mechanism 2 and the sand removal of the sand removal mechanism 3, so that the second filtering mechanism 4 does not cause excessive resistance. The second filtering mechanism 4 can optimize the filtering effect and maximize the filtering of the solid impurities in the slurry.

[0055] Specifically, part of the frame 49 extends out of the tank 1, and the frame 49 extending out of the tank 1 is sealingly arranged. The second discharge port 46 is arranged at a position close to the top of the frame 49 and located on the side of the frame 49 away from the first filtering mechanism 2. As shown in Figure 8 In order to improve the removal efficiency of fine grid sludge in the slurry or sewage, the second filtering member 410 is preferably a round hole plate. In order to achieve good filtering effect, the aperture of the round hole plate can be set to 2mm-8mm according to needs. Of course, the second filtering member 410 of the second filtering mechanism 4 can also adopt the grid bars 21 or other forms of smaller filtering gap gratings. In view of the filtering efficiency, the second filtering member 410 preferably adopts the round hole plate.

[0056] In the embodiment, in order to ensure the strength of the first tines 221 inserted into the gaps of the grid bars 21, to ensure that the first tines 221 can smoothly remove the sludge, and to have a certain filtering effect, the gaps of the adjacent grid bars 21 are set to 10mm-25mm. The first filtering mechanism 2 is used to remove the coarse garbage in the slurry or sewage. The structure of the horizontal grid bars 21 and the tine plates 22 can achieve rapid filtering and sludge removal, so the gap of the grid bars 21 can be set to a larger gap, which can be set according to the characteristics of the material.

[0057] As shown in Figure 4 The grid bars 21 extend along a first horizontal direction X, and a plurality of grid bars 21 are distributed at intervals in a second horizontal direction Y. The first horizontal direction X and the second horizontal direction Y are both parallel to the horizontal plane and perpendicular to each other, that is, the first horizontal direction X and the second horizontal direction Y are both perpendicular to the vertical direction Z.

[0058] The horizontal installation of the grid bars 21 can reduce the installation height of the device to the minimum, and the transverse size and longitudinal size (i.e. the size of the grid bars 21 in the first horizontal direction X and the size of the grid bars 21 in the second horizontal direction Y) of the filtering surface (i.e. the area of the plurality of grid bars 21) can be flexibly designed according to the amount of slurry to be treated, without affecting the overall height of the device, i.e. the filtering area can be increased as needed, and the height direction does not need to be changed, which is highly flexible.

[0059] In the present embodiment, two groups of first rotating assemblies for supporting the rake plates 22 are arranged in the box body 1, and the two groups of first rotating assemblies are spaced apart in the second horizontal direction Y and arranged on the inner wall surface of the box body 1. The first rotating assembly includes a driving sprocket 23, a driven sprocket 24, and a first chain 25 sleeved outside the driving sprocket 23 and the driven sprocket 24, and the first chain 25 is located above the grid bars 21. The driving sprocket 23 and the driven sprocket 24 are spaced apart in the first horizontal direction X. The two sides of the rake plate 22 in the second horizontal direction Y are fixedly connected with the first chains 25 of the two groups of first rotating assemblies. The driving sprocket 23 is connected with a second driving member 26, and the second driving member 26 is used to drive the driving sprocket 23 to rotate, so that the moving direction of the rake plate 22 cooperating with the grid bars 21 is from the feeding port 11 to the first discharging port 13. That is, the second driving member 26 drives the driving sprocket 23 to rotate counterclockwise, so that the driven sprocket 24 and the first chain 25 are also counterclockwise (i.e. the moving direction of the first chain 25 located below the driven sprocket 24 is from left to right), and the plurality of rake plates 22 fixedly connected with the first chain 25 are also counterclockwise, so as to clean the solid impurities on the grid bars 21 to the first discharging port 13. Figure 1 and Figure 2 In the present embodiment, the two groups of first rotating assemblies are arranged on the inner wall surface of the box body 1, so that the space occupied by the first rotating assemblies in the box body 1 is small, and the overall height of the device is low.

[0060] Specifically, a plurality of first tines 221 are spaced apart in the second horizontal direction Y. As shown in Figure 5 , the first tines 221 extend into the gap between adjacent grid bars 21, so that when the first chain 25 drives the rake plate 22 to move from left to right, the first tines 221 can push the solids on the grid bars 21 and between the grid bars 21 to the direction close to the first discharging port 13, and finally discharged from the first discharging port 13.

[0061] The first filtering mechanism 2 adopts the fixed grid bar 21 filtering and the rake plate 22 batch slag cleaning mode, and has few working parts, so that the device runs more stably. The number of rake plates 22 can be flexibly set according to the characteristics of sewage, i.e. the amount of contained slag, and the number of rake plates 22 can be increased when the amount of slag is large, and the number of rake plates 22 can be reduced when the amount of slag is small.

[0062] In the present embodiment, as shown in Figure 1 , Figure 2 and Figure 4As shown, a bracket 28 extending along the second horizontal direction Y is fixedly installed inside the housing 1, and the grid strip 21 is fixedly connected to the bracket 28. Preferably, there are three brackets 28, with two brackets 28 close to the two ends of the grid strip 21 and one bracket 28 close to the middle position of the grid strip 21 in the first horizontal direction X.

[0063] like Figure 6 As shown, in the vertical direction Z, the width of the grid bars 21 gradually increases from both ends to the middle, or the gap between adjacent grid bars 21 gradually decreases from both ends to the middle. That is, the cross-section of the grid bars 21 is approximately rhomboid. In this embodiment, the width refers to the dimension in the second horizontal direction Y.

[0064] In a preferred embodiment, the cross-section of the grid bar 21 includes an upper half 211 whose width gradually increases from top to bottom, a middle half 212 whose width remains constant, and a lower half 213 whose width gradually decreases from top to bottom. Figure 6 The dotted lines are for illustrative purposes only and have no practical meaning. The upper part 211 and the lower part 213 are symmetrical about the middle part 212.

[0065] In this embodiment, regarding the gaps between adjacent grid bars 21, the gaps between the upper half 211 are approximately in the shape of a positive V, and the gaps between the lower half 213 are approximately in the shape of an inverted V. The filtered liquid flows down through the positive V-shaped gaps and the inverted V-shaped gaps in sequence, which can accelerate the flow rate of the filtered liquid. This results in a large flow rate through the grid 21 mesh formed by the combination of grid bars 21, lower filtration resistance, and makes it less likely for faulty substances such as stones to get stuck in the gaps of the grid bars 21. The slag removal resistance is low, ensuring the efficient operation of the device.

[0066] Preferably, the first filtration mechanism 2 further includes a slag-blocking rake 27 disposed above the first discharge port 13. The slag-blocking rake 27 is located above the first chain 25. Figure 7 As shown, the slag-blocking rake 27 has multiple second rake teeth 271 on the side facing the first chain 25, and these second rake teeth 271 are spaced apart in the second horizontal direction Y. The second rake teeth 271 are used to extend into the gaps between adjacent first rake teeth 221, thereby enabling efficient cleaning of residual screenings on the rake plate 22. Figure 7 In order to make the illustration clearer, the distance between the rake tooth plate 22 and the slag-blocking rake 27 is increased. In actual operation, the first rake tooth 221 and the second rake tooth 271 are engaged.

[0067] Specifically, driven by the drive sprocket 23, when the rake plate 22 rotates counterclockwise with the first chain 25 to above the first discharge port 13, the second rake tooth 271 set above can extend into the gap of the first rake tooth 221, so that the residual screen residue on the rake plate 22 can be cleaned efficiently.

[0068] like Figure 1As shown, the slag blocking rake 27 is rotatably connected to the box body 1 away from one side of the first chain 25. Specifically, both ends of the slag blocking rake 27 away from one side of the first chain 25 are rotatably connected to the box body 1 along the second horizontal direction Y. A limiting piece (not shown in the figure) for limiting the slag blocking rake 27 is fixed in the box body 1, so that the slag blocking rake 27 is inclined towards the first chain 25. The limiting piece is provided with two, one below the connection between the slag blocking rake 27 and the box body 1, and one above the connection between the slag blocking rake 27 and the box body 1, and the slag blocking rake 27 can rotate between the two limiting pieces. The movable slag blocking rake 27 can reverse the slag cleaning of the first rake teeth 221, so that the first rake teeth 221 remain clean.

[0069] In the present embodiment, the rack 49 is provided with two groups of second rotating assemblies for supporting the second filter 410, which are spaced apart in the second horizontal direction Y and arranged on the inner wall surface of the rack 49. The second rotating assembly and the first rotating assembly can adopt similar structures. The second rotating assembly includes a second chain (not shown in the figure) and a fifth driving member 411, and the two sides of the second filter 410 in the second horizontal direction Y are respectively fixedly connected to the second chains of the two groups of second rotating assemblies, and the fifth driving member 411 is used to drive the second chain to rotate the second filter 410, so that the second filter 410 can transport the grid slag to the top of the rack 49 and then discharge it from the second discharge port 46.

[0070] Preferably, the second filtering mechanism 4 further comprises a brush arranged above the second discharge port 46 for brushing the grid slag on the second filter 410. The brush is connected to a sixth driving member 412, and the sixth driving member 412 is used to drive the brush to rotate. Specifically, the second filter 410 rotates clockwise, and the brush rotates counterclockwise, so that the brush can effectively brush off the grid slag on the second filter 410.

[0071] In the present embodiment, the box body 1 can be provided with one or more flushing ports 202. The flushing port 202 can be located above the grid bars 21, and the number of flushing ports 202 can be set according to needs, and the flushing surface is large, which can ensure efficient cleaning of the trapped filter slag, so that the content of organic matter in the discharged slag is smaller and the degree of sanitation is higher.

[0072] Specifically, the box body 1 is provided with a baffle 201 at the corresponding position of the inlet 11 for preventing impact. Figure 1As shown, the bottom of the housing 1 is provided with multiple second legs 5 extending vertically in the Z direction to support the housing 1 on the working surface 7. The top surface of the housing 1 is provided with an odor treatment port 29, and the side surface of the housing 1 is provided with an inspection port 210. The sand collection pit 14 is V-shaped and extends along the second horizontal direction Y, which can better collect sand particles. The sand discharge screw 31 is located above the sand collection pit 14. A third driving component 34 is connected to one end of the sand discharge screw 31 near the feed inlet 11 to drive the sand discharge screw 31 to rotate. A fourth driving component 35 is connected to the top end of the sand lifting screw 32 to drive the sand lifting screw 32 to rotate.

[0073] like Figure 1 As shown, in a specific application scenario, the slurry or wastewater (solid-liquid mixture) to be treated enters the tank 1 through the feed inlet 11. After being filtered by the first filter mechanism 2, the slurry flows downward through the gaps between the grid bars 21. In the sand settling and discharge mechanism 3, the sand particles settle and are transported to the sand collection pit 14 by the sand discharge screw 31, and then to the third discharge outlet 33 by the sand lifting screw 32. After removing a large amount of sand particles, the material is filtered by the second filter mechanism 4 and finally discharged from the liquid outlet 12. The solids after being filtered by the first filter mechanism 2 remain on the grid bars 21. The rake tooth plate 22 is moved by the first chain 25, pushing the solids on the grid bars 21 to the first discharge outlet 13 for discharge. After discharge, it enters the press 6, such as... Figure 3 As shown, the press 6 is driven by the seventh drive unit 61, and the solid waste after pressing is discharged from the fourth discharge port 62 of the press 6. The solids filtered by the second filter mechanism 4 are transported by the conveying assembly 42 to the second discharge port 46 for discharge.

[0074] It should be noted that in the description of this specification, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this specification, unless otherwise stated, "a plurality of" means two or more.

[0075] Any numerical values ​​cited herein include all values ​​ranging from a lower limit to an upper limit, increasing by one unit, with at least two units between any lower and any higher value. For example, if the quantity of a component or the value of a process variable (e.g., temperature, pressure, time, etc.) is described as being from 1 to 90, preferably from 20 to 80, more preferably from 30 to 70, the purpose is to illustrate that values ​​such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also explicitly listed in this specification. For values ​​less than 1, a unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1, etc. These are merely examples intended for explicit expression, and it can be assumed that all possible combinations of values ​​listed between the minimum and maximum values ​​are explicitly described in this specification in a similar manner.

[0076] Unless otherwise indicated, all ranges are inclusive of the endpoints and all numbers are meant to be in the range of approximately plus or minus 0.1 % from that referenced. "Approximately" or "about" used in connection with a range means that both endpoints are inclusive and that the range is meant to cover the range from the lower endpoint to the upper endpoint, inclusive of the endpoints.

[0077] All articles and references, including patent applications and publications, disclosed below are incorporated herein by reference for all purposes. The term "consisting essentially of to describe a combination shall include the elements, ingredients, components or steps identified, and such other elements ingredients, components or steps that do not materially affect the basic and novel characteristics of the combination. The use of the term "comprising" or "including" to describe combinations of elements, ingredients, components or steps herein also is taken to mean that other elements, ingredients, components or steps can be present in addition to those specifically recited, in order to achieve the stated purpose. The use of the term "may" to describe any aspect of the herein disclosed subject matter is intended to mean that such aspect is optional.

[0078] Plural elements, ingredients, components or steps can be provided by a single integrated element, ingredient, component or step. Alternatively, a single integrated element, ingredient, component or step might be divided into separate plural elements, ingredients, components or steps. To "comprise" or "comprising" means to include, without necessarily being limited to the contents of the recited phrase or term.

[0079] It is understood that the above description is intended to be illustrative and not restrictive. Many embodiments and applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the technology should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated by reference for all purposes. The omission of any aspect of the subject matter disclosed herein does not preclude coverage of that aspect, nor does it relinquish any right to use such subject matter under the teachings of the principles disclosed in the instant application or under the teaching of any corresponding claims.

Claims

1. An assembled two-stage filtering, sand setting and sand discharging integrated machine device, characterized in that, The utility model relates to a sand filter, which comprises: a box body provided with a feed inlet at one end in a first horizontal direction and a liquid outlet at the other end in the first horizontal direction; a first filtering mechanism arranged in the box body, the first filtering mechanism comprising a plurality of bars extending in the first horizontal direction and a rake plate movably arranged above the bars, the bars being fixedly arranged in the box body, one end of the bars being arranged below the feed inlet, the box body being provided with a first discharge outlet below the other end of the bars away from the feed inlet, the rake plate being provided with a plurality of first tines for extending into the gaps between the bars, the moving direction of the rake plate being from the feed inlet to the first discharge outlet; a second filtering mechanism partially arranged in the box body, the second filtering mechanism being arranged between the first filtering mechanism and the liquid outlet, the filtering size of the second filtering mechanism being smaller than the gaps between the bars, the second filtering mechanism being provided with a second discharge outlet at a position close to the top; a sand setting and discharging mechanism arranged between the first filtering mechanism and the second filtering mechanism, the box body being provided with a sand collecting pit below the first filtering mechanism, the sand setting and discharging mechanism comprising a sand discharging screw and a sand lifting screw, the sand discharging screw being installed at the bottom of the box body and extending in the first horizontal direction, the sand discharging screw being used for transporting the sand particles at the bottom of the box body to the sand collecting pit, the sand lifting screw being arranged obliquely, one end of the sand lifting screw being arranged in the sand collecting pit, the other end of the sand lifting screw extending out of the box body and being provided with a third discharge outlet, the sand lifting screw being used for transporting the sand particles in the sand collecting pit to outside of the box body.

2. The prefabricated two-stage filtering, sanding and sand-drawing integrated machine device according to claim 1, characterized in that, The second filtering mechanism further comprises a first driving member, a conveying assembly and a filtering assembly, the first driving member being in transmission connection with the conveying assembly and the filtering assembly, the first driving member being used for providing rotating power, the conveying assembly being used for conveying the impurities filtered by the filtering assembly to the second discharge outlet, the filtering assembly comprising a grid rolling frame in transmission connection with the conveying assembly, a first filtering member provided with filtering holes and connected to the grid rolling frame, the first filtering member being circumferentially distributed around the axis of the conveying assembly, and adjacent first filtering members being connected to each other.

3. The prefabricated two-stage filter and sand trap and sand discharging integrated machine device according to claim 2, characterized in that, The second filtering mechanism further comprises a cleaning assembly, the cleaning assembly comprising a flushing spray rod extending along the extending direction of the first filtering member, the flushing spray rod being arranged outside the filtering assembly, the spray head on the flushing spray rod being directed towards the first filtering member of the filtering assembly, and the flushing spray rod being used for flushing the impurities trapped on the first filtering member to the conveying assembly arranged at the central position in the grid rolling frame.

4. The prefabricated two-stage filtering, sanding and sand-drawing integrated machine device according to claim 2, characterized in that, The second filtering mechanism is provided with a squeezing dehydration section upstream of the second discharge outlet, the conveying assembly is movably connected with a first leg, the first leg makes the axis of the conveying assembly and the filtering assembly form a preset angle with the horizontal plane, and the part of the filtering assembly extending out of the box body is connected with a detachable sealing cover plate.

5. The prefabricated two-stage filtering, sanding and sand-drawing integrated machine device according to claim 1, characterized in that, The second filtering mechanism comprises a frame and a second filtering member, the frame is obliquely arranged and fixedly connected with the box body, and the frame is provided with the second discharge port at a position close to the top; the second filtering member is rotationally connected with the frame and used for transporting the grid slags to the top of the frame and then discharging the grid slags through the second discharge port.

6. The prefabricated two-stage filter and sand trap and sand discharging integrated machine device according to claim 5, characterized in that, Part of the frame extends out of the box body, and the frame extending out of the box body is sealingly arranged; the second discharge port is arranged at a position of the frame close to the top and located on a side of the frame away from the first filtering mechanism.

7. The assembled two-stage filtering, sanding and sand discharging integrated machine device according to any one of claims 2-6, characterized in that, The gap of the grid bars is 10mm-25mm; the filtering aperture of the first filtering member or the second filtering member is 2mm-8mm.

8. The prefabricated two-stage filtering, sanding and sand-drawing integrated machine device according to claim 1, characterized in that, A plurality of the grid bars are spaced apart in a second horizontal direction, the first horizontal direction and the second horizontal direction are both parallel to the horizontal plane and perpendicular to each other; a plurality of the first tines are spaced apart in the second horizontal direction; the box body is provided with two groups of first rotating assemblies, the two groups of first rotating assemblies are spaced apart in the second horizontal direction and arranged on the inner wall surface of the box body; the first rotating assembly comprises a driving sprocket, a driven sprocket, and a first chain sleeved outside the driving sprocket and the driven sprocket, the first chain is located above the grid bars; the driving sprocket and the driven sprocket are spaced apart in the first horizontal direction; the tine plate is fixedly connected with the first chains of the two groups of first rotating assemblies on both sides of the tine plate in the second horizontal direction; the driving sprocket is connected with a second driving member, the second driving member is used for driving the driving sprocket to rotate, so that the moving direction of the tine plate matched with the grid bars is the direction from the feeding port to the first discharge port.

9. The prefabricated two-stage filter and sand trap and sand discharging integrated machine device according to claim 8, characterized in that, The first filtering mechanism further comprises a slag blocking rake arranged above the first discharge port, the slag blocking rake is located above the first chain, and one side of the slag blocking rake facing the first chain is provided with a plurality of second tines, the plurality of second tines are spaced apart in the second horizontal direction, and the second tines are used for extending into the gaps between adjacent first tines.

10. The prefabricated two-stage filtering, sanding and sand-drawing integrated machine device according to claim 1, characterized in that, The sand collecting pit is in a V shape and extends along the second horizontal direction, and the sand discharging screw is located above the sand collecting pit; one end of the sand discharging screw close to the feeding port is connected with a third driving member; the top end of the sand lifting screw is connected with a fourth driving member; the bottom of the box body is externally provided with a plurality of second supporting legs extending in the vertical direction and used for supporting the box body on a working surface. The second filtering mechanism comprises a frame and a second filtering member, the frame is obliquely arranged and fixedly connected with the box body, and the frame is provided with the second discharge port at a position close to the top; the second filtering member is rotationally connected with the frame and used for transporting the grid slags to the top of the frame and then discharging the grid slags through the second discharge port.

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