Sludge extrusion machine

Abstract

The present invention provides a sludge extrusion molding machine, including a driving device, and a shell having a sludge bin for containing sludge and a plurality of molding outlets connected to the sludge bin at the bottom; the sludge extrusion molding machine also includes an extrusion device arranged in the sludge bin and capable of being driven and deformed by the driving device so that the sludge is extruded and molded and discharged from the molding outlet. The sludge extrusion molding machine provided by the present invention has a simple structure and a simple molding step. The molding of the sludge can be achieved by deforming the extrusion device by an external force. In this way, on the one hand, the manufacturing cost of the sludge extrusion molding machine can be reduced, and on the other hand, the molding process cost of using the sludge extrusion molding machine to mold the sludge can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of dewatered sludge treatment, and in particular relates to a sludge extrusion molding machine. Background Art

[0002] The sludge forming machine is part of the sludge forming system. The sludge forming process is generally to first pass the dehydrated sludge through the sludge forming machine, and then lay it on the drying belt for drying to form several strips or blocks of sludge. At present, the sludge extrusion forming machines that are widely used in China mainly include stamping extrusion forming machines and double-axis screw extrusion forming machines. For example, the extrusion unit of the double-axis screw extrusion forming machine includes two parallel shafts, and the ends of the two shafts are respectively provided with extrusion wheels, and then the two extrusion wheels are driven up and down to extrude the sludge. However, their structures are complex, the molding steps are cumbersome, the cost is high, and they are prone to clogging after long-term operation, and need manual processing. Summary of the invention

[0003] The purpose of the present invention is to provide a sludge extrusion molding machine, aiming to solve the problems of the existing sludge extrusion molding machine, such as complex structure, complicated molding steps, high cost, etc.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a sludge extrusion molding machine is provided, including a driving device, and a shell having a sludge bin for containing sludge inside and a plurality of molding discharge ports connected to the sludge bin at the bottom; the sludge extrusion molding machine also includes an extrusion device arranged in the sludge bin and capable of being driven and deformed by the driving device so that the sludge is extruded and molded and discharged from the molding discharge port.

[0005] Preferably, the squeezing device is rotatably disposed in the sludge bin, and the squeezing device comprises a plurality of storage grids for storing sludge and having a shrinkable volume for squeezing the sludge.

[0006] Preferably, the extrusion device comprises a rotating shaft rotatably disposed in the sludge bin and drivingly connected to the driving device, and a plurality of scrapers disposed on the rotating shaft and distributed along the circumference thereof; the storage grid is formed between two adjacent scrapers.

[0007] Preferably, the cross-section of the bottom of the sludge bin is in the shape of an arc, and the axis of the rotating shaft is arranged away from the center of the arc at the bottom of the sludge bin.

[0008] Preferably, the scraper is arranged along the tangent direction of the outer wall of the rotating shaft.

[0009] Furthermore, two ends of the scraper are respectively arranged to fit with the inner walls of both sides of the sludge bin.

[0010] Furthermore, the driving device includes a motor connected to the rotating shaft.

[0011] Furthermore, the sludge extrusion molding machine also includes a sand and gravel chamber for recovering sand and gravel, which is arranged on the shell and communicated with the sludge bin.

[0012] Preferably, the scraper is a rubber piece.

[0013] Preferably, the molding outlet is in the shape of a circular hole, and a plurality of the molding outlets are evenly distributed at the bottom of the shell.

[0014] The beneficial effect of the sludge extrusion molding machine provided by the present invention is that: compared with the prior art, the sludge extrusion molding machine provided by the present invention is provided with an extrusion device in the sludge bin, and the extrusion device is provided to be deformable, so that the sludge can be squeezed to the molding outlet by driving the extrusion device to deform, and the sludge is molded and discharged from the molding outlet. It can be seen that the sludge extrusion molding machine of the present invention has a simple structure and a simple molding step. The molding of the sludge can be achieved by deforming the extrusion device through external force. In this way, on the one hand, the manufacturing cost of the sludge extrusion molding machine can be reduced, and on the other hand, the molding process cost of using the sludge extrusion molding machine to mold the sludge can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional schematic diagram of a sludge extrusion molding machine provided in an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the main view;

[0017] Figure 3 for Figure 1 Schematic diagram of the left side;

[0018] Figure 4 for Figure 1 A top view schematic diagram of

[0019] Figure 5 for Figure 4 Schematic diagram of CC cross-section;

[0020] Figure 6 for Figure 3 Schematic cross-sectional view of .

[0021] Among them, 1-shell, 10-sludge bin, 11-left side plate, 111-left mounting plate, 12-right side plate, 121-right mounting plate, 13-front side plate, 14-rear side plate, 15-bottom plate, 16-feed port, 17-molding outlet, 2-extrusion device, 20-storage grid, 21-rotating shaft, 22-scraper, 3-bearing, 4-bearing seat, 5-bearing end cover, 6-driving device, 61-motor, 62-coupling, 7-sand and gravel chamber, 8-base frame, 9-receiving chamber. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] As introduced in the background art, the sludge extrusion molding machine in the prior art has the problems of complex structure, complicated molding steps, high cost, and easy clogging after long-term operation.

[0024] In view of this, the present invention provides a sludge extrusion molding machine.

[0025] Please also read Figures 1 to 6 , the sludge extrusion molding machine provided by the present invention is now described. The sludge extrusion molding machine includes a shell 1, an extrusion device 2 and a driving device 6. The shell 1 has a sludge bin 10 for containing sludge, and a plurality of molding outlets 17 connected to the sludge bin 10 are provided at the bottom of the shell 1; the driving device 6 is connected to the extrusion device 2 and is used to drive the extrusion device 2; the extrusion device 2 is arranged in the sludge bin 10, and the extrusion device 2 can be driven by the driving device 6 to deform, so that the sludge is squeezed and molded and discharged from the molding outlet 17. In this embodiment, a feed port 16 is opened at the top of the shell 1, and the feed port 16 is connected to the sludge bin 10. The dehydrated sludge is poured into the sludge bin 10 from the feed port 16, and is extruded by the extrusion device 2 in the sludge bin 10, so that the sludge is molded and discharged from the molding outlet 17.

[0026] Compared with the prior art, the sludge extrusion molding machine provided in the embodiment of the present invention is provided with an extrusion device 2 in the sludge bin 10, and the extrusion device 2 is configured to be deformable, so that the sludge can be extruded to the molding outlet 17 by driving the extrusion device 2 to deform, and the sludge is molded and discharged from the molding outlet 17. It can be seen that the sludge extrusion molding machine of the present embodiment has a simple structure and a simple molding step, and the molding of the sludge can be achieved only by deforming the extrusion device 2 by an external force. In this way, on the one hand, the manufacturing cost of the sludge extrusion molding machine can be reduced, and on the other hand, the molding process cost of using the sludge extrusion molding machine to mold the sludge can be reduced.

[0027] Preferably, in the embodiments of the present invention, please refer to Figure 2The above-mentioned molding outlet 17 is preferably in the shape of a circular hole, and a plurality of molding outlets 17 are evenly distributed at the bottom of the housing 1. In this embodiment, the molding outlet 17 is designed in the shape of a circular hole, so that the sludge product molded by the sludge extrusion molding machine of this embodiment is in the shape of a thin cylindrical strip. Of course, in other embodiments, the molding outlet 17 can also be set to other preferred shapes according to the needs of use.

[0028] Preferably, in the embodiments of the present invention, please refer to Figure 6 The extrusion device 2 is rotatably disposed in the sludge bin 10. The extrusion device 2 includes a plurality of storage grids 20 for storing sludge and whose volume can be shrunk to squeeze the sludge, wherein each storage grid 20 has a state of moving to communicate with the molding outlet 17. In this embodiment, the dehydrated sludge enters the sludge bin 10 from the feed inlet 16, and is stored in the storage grid 20 of the extrusion device 2 with the opening facing upward under the action of its own gravity. The storage grid 20 filled with sludge moves with the extrusion device 2 to a position communicating with the molding outlet 17, where the volume of the storage grid 20 has shrunk, and the sludge squeezed by the storage grid 20 enters the molding outlet 17 from the opening of the storage grid 20, and is molded and discharged from the molding outlet 17.

[0029] Preferably, in the embodiments of the present invention, please refer to Figure 6 The extrusion device 2 includes a rotating shaft 21 rotatably disposed in the sludge bin 10 and transmission-connected to the driving device 6, and a plurality of scrapers 22 disposed on the rotating shaft 21 and distributed along its circumference; in the present embodiment, the plurality of scrapers 22 are evenly distributed on the circumference of the rotating shaft 21, and the above-mentioned material storage grid 20 is formed between two adjacent scrapers 22. In this embodiment, the above-mentioned rotating shaft 21 is rotatably arranged in the sludge bin 10, and the scraper 22 on the rotating shaft 21 rotates with the rotation of the rotating shaft 21, that is, the storage grid 20 rotates with the rotating shaft 21. When the storage grid 20 moves to a position connected with the molding discharge port 17, the scraper 22 will produce different degrees of mutual compression with the inner wall of the sludge bin 10 during the rotation of the rotating shaft 21, so that the scraper 22 produces different degrees of bending deformation, so that the volume of the storage grid 20 connected with the molding discharge port 17 shrinks to different degrees, so that the sludge squeezed by the storage grid 20 enters the molding discharge port 17 from the opening of the storage grid 20, and is molded and discharged from the molding discharge port 17.

[0030] Preferably, in the embodiment of the present invention, the scraper 22 is preferably a rubber member 22, and the rubber has certain rigidity and elasticity, so as to ensure that the scraper 22 can produce a sufficient degree of bending, thereby ensuring the sludge extrusion molding effect of the sludge extrusion molding machine of this embodiment. Of course, in other embodiments, the scraper 22 can also be made of other materials, as long as it can meet the rigidity and elasticity requirements to a certain extent, so that the sludge extrusion molding machine of this embodiment can mold a sludge product with better effect.

[0031] Preferably, in the embodiments of the present invention, please refer to Figure 1 and Figure 6 The bottom cross section of the sludge bin 10 is in an arc shape, and the axis of the rotating shaft 21 is set at the arc center of the bottom of the sludge bin 10. In this embodiment, please refer to Figure 3 , the axis of the rotating shaft 21 is relatively located at the lower right of the arc center of the sludge bin 10, and the rotating direction of the rotating shaft 21 relative to the sludge bin 10 is counterclockwise. When the rotating shaft 21 rotates counterclockwise, there will be scrapers 22 from the top of the rotating shaft 21 constantly entering the state of abutting and squeezing the inner wall of the sludge bin 10, and as the rotating shaft 21 rotates, the degree to which the outer end of the scraper 22 is squeezed by the inner wall of the sludge bin 10 gradually increases, so that the volume of the storage grid 20 between the two scrapers 22 shrinks more and more to squeeze the sludge, and when the squeezing force on the sludge is large enough, it is formed and discharged from the forming outlet 17. Of course, in other embodiments, the axis of the rotating shaft 21 can also be relatively located at the upper left of the arc center of the sludge bin 10, and the rotating direction of the rotating shaft 21 relative to the sludge bin 10 is clockwise, and other structural settings can also be modified accordingly to achieve the solution of the present invention. The sludge extrusion molding machine of this embodiment, through the simple setting of the eccentric rotating shaft 21, can realize the volume contraction of the storage grid 20 as long as the rotating shaft 21 is driven to rotate by external force, so that the sludge is squeezed and discharged from the molding outlet 17, thereby making the structure of the sludge extrusion molding machine of this embodiment simple, and the operation process of sludge molding is simple, thereby reducing its manufacturing and processing technology costs.

[0032] Preferably, in the embodiments of the present invention, please refer to Figure 1 The upper part of the sludge bin 10 is bucket-shaped. The bucket-shaped design of the sludge bin 10 in this embodiment not only allows the sludge entering the sludge bin 10 from the feed port 16 to be stored in the storage grid 20 of the extrusion device 2, but also makes the appearance of the shell 1 beautiful.

[0033] Preferably, in the embodiments of the present invention, please refer to Figure 1The shell 1 is composed of a left side plate 11, a right side plate 12, a front side plate 13, a rear side plate 14 and a bottom plate 15; wherein the left side plate 11 and the right side plate 12 are arranged opposite to each other and are parallel to each other, the front side plate 13 and the rear side plate 14 are arranged adjacent to the left side plate 11 and the right side plate 12 respectively, and the front side plate 13 and the rear side plate 14 are arranged opposite to each other, and the distance between the front side plate 13 and the rear side plate 14 gradually decreases from the top end to the bottom end of the shell 1, and the bottom plate 15 is arc-shaped and is respectively connected to the left side plate 11, the right side plate 12, the front side plate 13 and the rear side plate 14. Here, the left side plate 11, the right side plate 12, the front side plate 13, the rear side plate 14 and the bottom plate 15 enclose the above-mentioned sludge bin 10.

[0034] Preferably, in the embodiments of the present invention, please refer to Figures 1 to 5 The two ends of the rotating shaft 21 are rotatably connected to the left plate 11 and the right plate 12 of the housing 1 through the bearings 3. In this embodiment, the bearings 3 are preferably 6208 deep groove ball bearings; in order to support the bearings 3, bearing seats 4 are provided at both ends of the rotating shaft 21 in this embodiment. At the same time, in order to ensure the axial positioning of the outer ring of the bearing 3 and seal the bearing 3, bearing end covers 5 are provided at both ends of the rotating shaft 21 in this embodiment.

[0035] Preferably, in the embodiments of the present invention, please refer to Figure 6 The scraper 22 is arranged along the tangent direction of the outer wall of the rotating shaft 21, and the tangent direction of the scraper 22 is opposite to the rotation direction of the rotating shaft 21. The design of the scraper 22 in this embodiment makes it possible for each scraper 22 to not be in vertical contact with the inner wall of the sludge bin 10 when it contacts and squeezes the inner wall of the sludge bin 10, so that the squeezing between the scraper 22 and the inner wall of the sludge bin 10 will not conflict too much and cause the inner wall of the sludge bin 10 to be scraped; at the same time, the squeezing force of the inner wall of the sludge bin 10 on the scraper 22 is greater, that is, when the rotating power of the rotating shaft 21 is the same, the bending deformation of the scraper 22 is greater to squeeze the sludge, thereby reducing the use power of the sludge extrusion molding machine of this embodiment, thereby reducing its use cost and increasing its service life.

[0036] Further, in the embodiments of the present invention, please refer to Figure 5 The two ends of the scraper 22 are respectively arranged to fit the inner walls of the two sides of the sludge bin 10. The sludge extrusion molding machine of this embodiment ensures that the sludge will not stay between the scraper 22 and the side wall of the sludge bin 10 for a long time through the design of close fit between the scraper 22 and the two sides of the sludge bin 10, thereby preventing the sludge from hindering the normal rotation of the scraper 22, thereby ensuring the service life of the sludge extrusion molding machine.

[0037] Further, in the embodiments of the present invention, please refer to Figure 1The driving device 6 includes a motor 61 and a coupling 62. The output shaft of the motor 61 is connected to one end of the rotating shaft 21 through the coupling 62. The rotating shaft 21 is driven to rotate by the rotation of the motor 61, thereby driving the scraper 22 to rotate. The motor 61 in this embodiment is preferably a reduction motor, and the speed of the rotating shaft 21 is controlled within a certain range by the reduction motor, thereby ensuring that the scraper 22 has enough time to deform to a certain extent and then squeeze the sludge into the forming feed port 16 to form the material.

[0038] Further, in the embodiments of the present invention, please refer to Figure 1 , Figure 3 and Figure 6 The above-mentioned sludge extrusion molding machine also includes a sand and gravel chamber 7 for recovering sand and gravel, and the sand and gravel chamber 7 is arranged on the housing 1 and communicates with the sludge bin 10. In this embodiment, please refer to Figure 6 The gravel chamber 7 is arranged on the rear side plate 14 of the housing 1 and is close to the position where the scraper 22 recovers its deformation. In this embodiment, during the sludge forming process, some gravel will be mixed into the sludge. When the sludge is squeezed into the forming outlet 17 by the scraper 22, the gravel cannot enter the forming outlet 17 due to its large diameter. The design of the gravel chamber 7 of this embodiment enables the gravel to rotate with the scraper 22 to the position where the scraper 22 recovers to its original state when the scraper 22 cleans the gravel deposited at the bottom of the sludge bin 10, so that the gravel can be discharged into the gravel chamber 7 under the action of the elastic force generated by the scraper 22 and its own gravity, thereby avoiding the gravel from damaging the sludge extrusion molding machine of this embodiment, thereby increasing its service life.

[0039] Further, in the embodiments of the present invention, please refer to Figure 1 The above-mentioned sludge extrusion molding machine also includes a base frame 8, and the housing 1 and the motor 61 are both installed on the base frame 8. Figure 4 , the shell 1 is fixedly mounted on the bottom frame 8 through the left side plate 11 and the right side plate 12. Specifically, a left mounting plate 111 is provided at the bottom of the left side plate 11, and the left mounting plate 111 is vertically arranged with the left side plate 11 and arranged on the left side of the left side plate 11, and the left side plate 11 is locked on the bottom frame 8 through the left mounting plate 111. Similarly, a right mounting plate 121 is provided at the bottom of the right side plate 12, and the right mounting plate 121 is vertically arranged with the right side plate 12 and arranged on the right side of the right side plate 12, and the right side plate 12 is locked on the bottom frame 8 through the right mounting plate 121. At the same time, in this embodiment, the left side plate 11 and the right side plate 12 both protrude from the bottom of the shell 1 and extend to the bottom frame 8, and the bottom of the shell 1, the left side plate 11, the right side plate 12 and the bottom frame 8 enclose a material receiving chamber 9, and the finished sludge product formed and discharged from the forming discharge port 17 is received in the material receiving chamber 9 for later use.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sludge extrusion molding machine, comprising a driving device, and a shell having a sludge bin for containing sludge and a plurality of molding discharge ports connected to the sludge bin at the bottom, characterized in that: The sludge extrusion molding machine also includes an extrusion device disposed in the sludge bin and capable of being driven by the driving device to deform so that the sludge is extruded and molded and discharged from the molding outlet; The squeezing device is rotatably disposed in the sludge bin, and comprises a plurality of storage grids for storing sludge and having a shrinkable volume to squeeze the sludge; Wherein, the extrusion device comprises a rotating shaft rotatably arranged in the sludge bin and transmission-connected to the driving device, and a plurality of scrapers arranged on the rotating shaft and distributed along the circumference thereof; The cross section of the bottom of the sludge bin is in the shape of an arc, and the axis of the rotating shaft is arranged away from the center of the arc at the bottom of the sludge bin; The axis of the rotating shaft is relatively located to the lower right of the arc center of the sludge bin, and the rotating direction of the rotating shaft relative to the sludge bin is counterclockwise; Alternatively, the axis of the rotating shaft is relatively located to the upper left of the arc center of the sludge bin, and the rotation direction of the rotating shaft relative to the sludge bin is clockwise; The storage grid is formed between two adjacent scrapers; the dehydrated sludge enters the sludge bin from the feed port, and is stored in the storage grid of the extrusion device with the opening facing upward under the action of its own gravity; The sludge extrusion molding machine also includes a sand and gravel chamber for recovering sand and gravel, which is arranged on the shell and communicated with the sludge bin. The sand and gravel chamber is arranged on the rear side plate of the shell and is close to the position where the scraper recovers its deformation, so that when the scraper cleans the sand and gravel deposited at the bottom of the sludge bin, the sand and gravel will rotate with the scraper to the position where the scraper recovers its original state, so that the sand and gravel can be discharged into the sand and gravel chamber under the action of the elastic force generated by the scraper and its own gravity.

2. The sludge extrusion molding machine according to claim 1, characterized in that: The scraper is arranged along the tangent direction of the outer wall of the rotating shaft.

3. The sludge extrusion molding machine according to claim 2, characterized in that: The two ends of the scraper are respectively arranged in contact with the inner walls of the sludge bin on both sides.

4. The sludge extrusion molding machine according to claim 1, characterized in that: The driving device comprises a motor connected to the rotating shaft.

5. The sludge extrusion molding machine according to any one of claims 1 to 4, characterized in that: The scraper is a rubber piece.

6. The sludge extrusion molding machine according to any one of claims 1 to 4, characterized in that: The molding outlet is in the shape of a circular hole, and a plurality of the molding outlets are evenly distributed at the bottom of the shell.

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