Self-cleaning filter dewatering system mechanism

Abstract

The utility model relates to a kind of self-cleaning filter dry slag system mechanism, it includes material cavity, the feed inlet is set in the feed end of material cavity, its discharge end is set with extrusion hole;Screw rod driven by motor is arranged in the material cavity, the screw rod is conical structure and its pitch continuously decreases along material conveying direction;Coarse filter screen and conical screen are arranged in the material cavity along material conveying direction, the coarse filter screen is set at near the feed inlet, the conical screen is sleeved in the outer periphery of the screw rod, the material cavity is respectively set with and the coarse filter screen and conical screen intercommunication drain outlet.The utility model has the effect that dehydration efficiency is high, can reduce material liquid waste in the process of discharging slag and reduce environmental pollution simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of self-cleaning filter technology, and in particular to a self-cleaning filter slag discharge system mechanism. Background Technology

[0002] Self-cleaning filters are key equipment in industrial fluid handling systems and are widely used in chemical, food, pharmaceutical and water treatment fields. Their core function is to automatically remove solid impurities from fluids and ensure continuous and stable system operation.

[0003] Traditional self-cleaning filters typically discharge wastewater along with a large amount of liquid material and impurities using direct discharge or simple separation methods. This approach not only results in significant waste of valuable materials and increases production costs, but also causes secondary pollution due to the direct discharge of wastewater containing high concentrations of pollutants. With increasingly stringent environmental regulations and the growing need to optimize production costs, achieving efficient solid-liquid separation and reducing residual liquid material during the discharge process has become a critical issue that urgently needs to be addressed in this field.

[0004] While some dewatering devices exist in the existing technology, most suffer from problems such as complex structure, low dewatering efficiency, high energy consumption, or inability to be effectively integrated with self-cleaning filters, failing to meet the actual needs of modern industrial production for efficient, environmentally friendly, and automated slag discharge. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a self-cleaning filter slag discharge system mechanism, which has a high dewatering efficiency, while reducing material waste during the slag discharge process and reducing the degree of environmental pollution.

[0006] The above-mentioned utility model objective is achieved through the following technical solution:

[0007] A self-cleaning filter slag discharge system includes a material chamber, wherein the material chamber has a feed inlet at the feed end and an extrusion hole at the discharge end.

[0008] The material chamber is equipped with a screw driven by a motor. The screw has a conical structure and its pitch decreases continuously along the material conveying direction.

[0009] The material chamber is provided with a coarse filter screen and a conical screen along the material conveying direction. The coarse filter screen is located near the feed inlet, and the conical screen is sleeved on the outer periphery of the screw. The material chamber is provided with drain ports that communicate with the coarse filter screen and the conical screen respectively.

[0010] By utilizing the above technical solution, the combination of a tapered variable pitch screw and a two-stage filter screen enables continuous conveying, compression, and dehydration of impurity materials, ultimately resulting in the discharge of dry slag, which significantly reduces material waste and environmental pollution during slag discharge.

[0011] As a further technical solution of this utility model: the screw includes a screw body and a screw ridge; the screw ridge spirally surrounds the outer circumferential surface of the screw body; the pitch of the screw ridge continuously decreases along the material conveying direction, and the outer diameter of the screw ridge gradually decreases along the material conveying direction.

[0012] Through the above technical solution, the specific structure of the screw body and the screw ribs with variable pitch and variable outer diameter ensures that the material is subjected to gradually enhanced squeezing during the conveying process, thereby efficiently separating the water, which is the core of achieving efficient dehydration.

[0013] As a further technical solution of this utility model: a first drain port connected to the coarse filter screen is provided on the side wall of the material chamber.

[0014] The above technical solution provides an independent drain outlet for the coarse filter screen, which can promptly discharge a large amount of liquid that has been initially filtered and separated, effectively reducing the liquid load entering the fine filtration stage, improving processing efficiency and saving liquid.

[0015] As a further technical solution of this utility model: the inner diameter of the conical mesh gradually decreases along the material conveying direction, forming a gradually decreasing fitting gap with the outer diameter of the screw along the material conveying direction.

[0016] Through the above technical solution, the gradually narrowing gap between the conical mesh and the screw along the conveying direction can continuously reduce its capacity during material conveying, causing the material to be subjected to increasing extrusion pressure: on the one hand, it efficiently squeezes out the moisture from the material, and the moisture can be discharged in time through the conical mesh holes; on the other hand, it compresses the dehydrated impurities into dry residue with low moisture content, avoiding the mixing of impurities and liquid.

[0017] As a further technical solution of this utility model: a second drain port connected to the conical mesh is provided on the side wall of the material cavity.

[0018] The above technical solution provides an independent drain outlet for the conical mesh, which can specifically collect the liquid discharged during the squeezing process, further reducing the moisture content in the slag and ensuring the discharge effect of dry slag.

[0019] As a further technical solution of this utility model: the two ends of the conical mesh are respectively fixedly installed between the first filter screen support plate and the second filter screen support plate, and the first filter screen support plate and the second filter screen support plate are fixedly connected to the inner wall of the material cavity.

[0020] Through the above technical solution, the first filter screen support plate and the second filter screen support plate provide stable support and sealing for the conical mesh, ensuring the structural stability and operational reliability of the extrusion dewatering chamber, and guaranteeing continuous dewatering effect.

[0021] As a further technical solution of this utility model: the motor is driven to the screw via a screw connector.

[0022] Through the above technical solution, the motor achieves stable power transmission with the screw through the connecting parts, ensuring a stable and reliable power source for the screw rotation and extrusion, and guaranteeing the continuous and automated operation of the entire slag discharge process.

[0023] In summary, this utility model has at least one of the following beneficial technical effects:

[0024] 1. This utility model discloses a self-cleaning filter dry residue discharge system mechanism, which adopts a two-stage filtration structure with a motor-driven conical variable pitch screw and a coarse filter screen and a conical screen to realize continuous conveying, squeezing and deep dehydration of impurities, and finally form dry residue for discharge, thus solving the problems of material waste and environmental pollution during residue discharge.

[0025] 2. This utility model discloses a self-cleaning filter dry residue discharge system mechanism, which achieves progressive pressure extrusion of materials by using variable diameter designs for the screw thread and conical mesh to form a gradually changing fit gap, thereby efficiently separating water and ensuring efficient dehydration and the formation of dry residue.

[0026] 3. This utility model discloses a self-cleaning filter slag discharge system mechanism, which achieves stable, continuous and automated operation of the entire dewatering and slag discharge process by setting an independent liquid discharge channel, a stable filter screen support structure and a reliable power connection, thus ensuring the high efficiency and reliability of the system. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of a first embodiment of a self-cleaning filter slag discharge system according to the present invention.

[0028] Figure 2 This is a top view of a first embodiment of a self-cleaning filter slag discharge system according to the present invention.

[0029] Figure 3 for Figure 1 A schematic diagram of the assembly structure of the screw and screw connector inside the feed chamber.

[0030] Figure 4 for Figure 1 Side view of a conical mesh.

[0031] Figure 5 for Figure 1 Side view of the middle screw.

[0032] Figure 6 for Figure 1 Side view of a medium-coarse filter screen.

[0033] Figure 7 for Figure 1 Side view of the filter body of the medium-coarse filter.

[0034] Figure 8 This is a schematic diagram of the assembly structure of the utility model and the self-cleaning filter.

[0035] Reference numerals: 1. Extrusion base plate; 2. Extrusion orifice; 3. Material chamber; 4. Support leg; 5. Second drain outlet; 6. First drain outlet; 7. Coarse filter screen; 71. Filter screen body; 8. Top cover fixing plate; 9. Motor; 10. Top cover; 11. Feed inlet; 12. First filter screen support plate; 13. Conical screen; 14. Second filter screen support plate; 15. Screw; 151. Screw body; 152. Screw ridge; 16. Screw connector; 17. Self-cleaning filter. Detailed Implementation

[0036] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0037] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] Example 1:

[0040] Reference Figure 1 , Figure 2 and Figure 8 This utility model discloses a self-cleaning filter slag discharge system mechanism. Its inlet 11 is connected to the self-cleaning filter 17 via a flange to receive the slag liquid discharged from the self-cleaning filter 17. The slag discharge system mechanism includes a material chamber 3 for containing and processing the material liquid. A support leg 4 is welded to the bottom of the material chamber 3 to support the entire mechanism. An extrusion base plate 1 is welded to the outlet end of the material chamber 3, and an extrusion hole 2 for discharging dry slag is opened on the extrusion base plate 1. An inlet 11 for inputting the material liquid to be processed is opened at the inlet end of the material chamber 3. A top cover fixing plate 8 is bolted to the end of the material chamber 3. The top cover 10 covers the end opening of the material chamber 3, and the top cover 10 and the top cover fixing plate 8 are bolted together, thereby achieving a seal at the end of the material chamber 3 and preventing material liquid leakage.

[0041] Reference Figure 1 and Figure 3 The material chamber 3 is equipped with a coarse filter screen 7 for preliminary filtration and a conical screen 13 for fine filtration and auxiliary dewatering along the material conveying direction.

[0042] Reference Figure 6 and Figure 7 The coarse filter 7 includes a convex arc-shaped filter body 71 and a support frame, with the filter body 71 installed within the support frame. Its convex arc-shaped structure adapts to the cylindrical inner wall of the material chamber 3, increasing the filtration area and guiding the liquid to flow evenly, ensuring effective interception of large particles. (Refer to...) Figure 1 The support frame is connected to the mounting position downstream of the feed inlet 11 on the inner wall of the material chamber 3 via slots, bolts, etc., so that the coarse filter screen 7 is precisely fixed at the first filtration position after the liquid enters the material chamber 3, ensuring that the liquid flows through the coarse filter screen 7 to complete the initial filtration as soon as it enters. On the side wall of the material chamber 3, near the mounting position downstream of the feed inlet 11, there is a first drain port 6 connected to the coarse filter screen 7, which is used to discharge the liquid separated by the initial filtration of the coarse filter screen 7.

[0043] Reference Figure 1The conical mesh 13 has an overall conical cylindrical structure adapted to the screw 15. The cylindrical wall is covered with fine mesh holes to achieve liquid separation during fine filtration and dehydration. Its installation position is located downstream of the coarse filter 7 in the material conveying direction inside the material chamber 3, and it is coaxially sleeved on the outside of the conical screw 15 to ensure that when the screw 15 rotates, it can form a gradually decreasing fit gap with the inner wall of the conical mesh 13 along the material conveying direction. The two ends of the conical mesh 13 are respectively embedded and fixed between the first filter support plate 12 (near the feed side) and the second filter support plate 14 (near the discharge side). Both support plates are annular plates adapted to the contour of the inner wall of the material chamber 3, and both are fixed to the inner wall of the material chamber 3 by welding. This provides stable axial limiting and radial support for the conical mesh 13, preventing it from shifting or deforming during extrusion, and also forms a closed liquid collection space between the outer side of the conical mesh 13 and the inner wall of the material chamber 3. On the side wall of the material chamber 3, corresponding to the middle and rear section (near the discharge side) of the conical mesh 13 along the material conveying direction, a second drain port 5 is provided, which is connected to the closed liquid collection space and is used to discharge the liquid material after fine filtration and dehydration by the conical mesh 13.

[0044] Reference Figure 3 Two screws 15 are arranged parallel to each other along the material conveying direction inside the conical mesh 13. Each screw 15 is driven by a motor 9. The output shaft of the motor 9 is coaxially and fixedly connected to one end of the two screws 15 through the screw connector 16 to ensure stable and synchronous power transmission, so that the two screws 15 rotate at the same speed.

[0045] Reference Figure 3 , Figure 5 The screw 15 has a conical structure, including a screw body 151 and a screw ridge 152. The screw ridge 152 spirally surrounds the outer circumference of the screw body 151 and is fixedly connected to the screw body 151 or integrally formed. The pitch of the screw ridge 152 continuously decreases along the material conveying direction, and the outer diameter also gradually decreases along the material conveying direction. When it cooperates with the inner wall of the conical mesh 13, it can form a more uniform extrusion and conveying effect on the material, ensuring a continuous and efficient dewatering process.

[0046] Workflow: The liquid to be processed enters the material chamber 3 through the inlet 11 at the feed end. Under the sealing effect of the top cover 10 of the material chamber 3, the liquid first comes into contact with the coarse filter 7 near the inlet 11. The coarse filter 7 performs preliminary filtration of large particulate impurities in the liquid. Most of the liquid separated after filtration is discharged and recovered through the first drain port 6 on the side wall of the material chamber 3, which is connected to the coarse filter 7. After preliminary filtration, the remaining thick liquid (containing more impurities) is driven by the motor 9 and drives the two tapered variable pitch screws 15 to rotate synchronously through the screw connector 16. The screw ridges 152 of the screws 15 rotate with the screw body 151, conveying the thick liquid towards the extrusion hole 2 at the discharge end of the material chamber 3 along the material conveying direction. During the conveying process, as the screw ridges 152 of the screws 15 continuously decrease in pitch and the outer diameter gradually decreases along the conveying direction, the liquid is transported to the discharge end of the material chamber 3. As the pressure on the viscous liquid gradually increases, some of the water in the liquid further precipitates out. At this time, the precipitated water and the viscous liquid reach the conical mesh 13 sleeved on the outside of the screw 15. The conical mesh 13 performs fine filtration on the liquid. The liquid separated again is discharged and recovered through the second drain port 5 on the side wall of the material chamber 3, which is connected to the conical mesh 13. As the screw 15 continues to convey and squeeze, the water in the impurities is continuously squeezed out, and the impurities gradually concentrate to form dry residue. Finally, under the push of the screw 15, the dry residue is discharged through the extrusion hole 2 on the bottom plate 1 at the discharge end of the material chamber 3, completing the entire dry residue discharge process. Throughout the process, the first filter screen support plate 12 and the second filter screen support plate 14 always fix and support the conical mesh 13 to ensure that the conical mesh 13 stably performs the fine filtration function. The sealing fit between the upper cover 10 and the upper cover fixing plate 8 prevents the liquid from leaking.

[0047] The implementation principle of this utility model is as follows: This mechanism is based on the organic combination of mechanical extrusion and graded filtration. The screw 15 adopts a conical structure, and the pitch and outer diameter of the screw rib 152 decrease along the conveying direction. When the motor 9 drives the two screws 15 to rotate synchronously through the screw connector 16, the screw rib 152 conveys the viscous liquid while the pitch decreases, gradually compressing the liquid's capacity. The decrease in outer diameter further reduces the gap between the liquid and the screw 15 and the conical mesh 13, thereby generating a progressively stronger extrusion force on the liquid, promoting the efficient precipitation of water from impurities. At the same time, the inner diameter of the conical mesh 13 gradually decreases along the material conveying direction, forming a gradually changing fit gap with the conical structure of the screw 15. This gap gradually decreases from the feed end to the discharge end, ensuring that the liquid can pass smoothly through the conical mesh 13 for fine filtration, while preventing impurities from clogging the filter screen during the extrusion process. It can also help enhance the dewatering effect of extrusion; the coarse filter screen 7 achieves preliminary filtration of the liquid, separating a large amount of liquid in advance to reduce the load of subsequent extrusion dewatering; the independent design of the first drain port 6 and the second drain port 5 ensures that the liquid from the two stages of filtration is recovered separately, avoiding mixing of liquid and reducing recovery efficiency; in addition, the first filter screen support plate 12 and the second filter screen support plate 14 are welded to the inner wall of the material chamber 3, providing a stable installation foundation for the conical screen 13 and preventing it from shifting during extrusion; the bolt connection between the upper cover fixing plate 8 and the upper cover 10 ensures the sealing of the material chamber 3 and avoids leakage of liquid; the support leg 4 supports the material chamber 3 to ensure stable operation of the mechanism; the motor 9 is fixedly connected to the screw 15 through the screw connector 16 to achieve stable power transmission, ensuring that the screw 15 rotates continuously and uniformly, making the entire slag discharge process continuous and efficient, and ultimately solving the problems of liquid waste and environmental pollution in existing technologies.

[0048] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A self-cleaning filter slag discharge system mechanism, comprising a material chamber (3), wherein a support leg (4) is provided at the bottom end of the material chamber, the material chamber (3) has a material inlet (11) at its inlet end and an extrusion hole (2) at its outlet end, characterized in that, The material chamber (3) is provided with a screw (15) driven by a motor (9). The screw (15) has a conical structure and its pitch decreases continuously along the material conveying direction. The material chamber (3) is provided with a coarse filter screen (7) and a conical screen (13) along the material conveying direction. The coarse filter screen (7) is close to the feed inlet (11), and the conical screen (13) is sleeved on the outside of the screw (15). The material chamber (3) is provided with a drain port that communicates with the coarse filter screen (7) and the conical screen (13).

2. A self-cleaning filter dewatering residue system mechanism according to claim 1, wherein, The screw (15) includes a screw body (151) and a screw thread (152); The spiral ridge (152) spirally surrounds the outer circumferential surface of the screw body (151); The pitch of the screw ridge (152) decreases continuously along the material conveying direction, and the outer diameter of the screw ridge (152) gradually decreases along the material conveying direction.

3. A self-cleaning filter dewatering residue system mechanism according to claim 1, wherein, The side wall of the material chamber (3) is provided with a first drain port (6) that is connected to the coarse filter screen (7).

4. The self-cleaning filter slag discharge system mechanism according to claim 1, characterized in that, The inner diameter of the conical mesh (13) gradually decreases along the material conveying direction, forming a gradually decreasing fitting gap with the outer diameter of the screw (15) along the material conveying direction.

5. The self-cleaning filter slag discharge system mechanism according to claim 4, characterized in that, The side wall of the material chamber (3) is provided with a second drain port (5) that is connected to the conical mesh (13).

6. The self-cleaning filter slag discharge system mechanism according to claim 4, characterized in that, The two ends of the conical mesh (13) are fixedly installed between the first filter support plate (12) and the second filter support plate (14), and the first filter support plate (12) and the second filter support plate (14) are fixedly connected to the inner wall of the material cavity (3).

7. The self-cleaning filter slag discharge system mechanism according to claim 1, characterized in that, The output shaft of the motor (9) is fixedly connected to one end of the screw (15) via a screw connector (16).

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