A kind of harmless treatment equipment for industrial sludge

Abstract

The present application relates to the technical field related to sludge purification, and discloses an industrial sludge harmless treatment equipment. In order to solve the problem that a filter screen with a fixed aperture is prone to clogging when filtering industrial sludge, a filter screw is vertically arranged on a filter tank, and in the process of driving the filter screw to rotate by the filter tank, a driving gear and a fixed gear coaxial with the filter screw rotate relative to each other, thereby forcing the filter screw to rotate. On the one hand, the thread spacing between the filter screws is used to filter the sludge. On the other hand, during the rotation of the filter screw, solid particles on the outside of the filter screw tend to be transported downward under the action of the rotation of the thread, so that the solid particles are deposited at the bottom of the filter tank, thereby achieving the effect of screw filtration and accelerated deposition of solid particles.

Description

Technical Field

[0001] The present application relates to the technical field related to sludge purification, and in particular to an industrial sludge harmless treatment device. Background Art

[0002] Industrial sludge treatment includes physics, chemistry, biology and environmental engineering. The continuous development and progress of these technologies have made the treatment of industrial sludge more efficient, environmentally friendly and sustainable. Traditional physical and chemical treatment methods have been widely used in practice, while emerging biological treatment technology and incineration treatment technology have also received more and more attention and research.

[0003] Industrial sludge filtration is an important part of sludge treatment. Through filtration, water, impurities and residues in sludge can be removed, and the purity and dehydration effect of sludge can be improved. The sludge after filtration can reduce the volume, which is convenient for transportation and treatment. At the same time, useful substances in the sludge can be separated to improve the utilization rate of resources. In addition, filtration can also remove toxic and harmful substances in sludge and reduce pollution to the environment.

[0004] In the process of industrial sludge filtration, filter clogging is a common problem. Since the commonly used filters are mostly fixed apertures, when the particle size in the sludge does not match the filter hole aperture, clogging is likely to occur. In addition, some large particles of impurities and residues in the sludge are also likely to clog the filter holes, resulting in a decrease in filtration efficiency. Filter clogging not only affects filtration efficiency, but may also cause damage to equipment and stagnation of production lines. Summary of the invention

[0005] The present application proposes an industrial sludge harmless treatment device, which has the advantages of screw filtration and accelerated deposition of solid particles, and is used to solve the problem that the fixed aperture filter proposed in the above background technology is prone to clogging when filtering industrial sludge.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: an industrial sludge harmless treatment equipment, comprising: a treatment tank, which is provided with a sewage accumulation chamber, and a sewage filter tank is coaxially arranged on the inner side of the treatment tank; the sewage filter chamber is provided on the inner side of the sewage filter tank, and a sewage inlet is provided on the surface of the treatment tank; a sewage filter screw is movably mounted on the side wall of the sewage filter tank, and a driving gear is fixedly mounted on the bottom of the sewage filter screw; a driving motor is arranged at the outer bottom of the treatment tank, and the output shaft is coaxially fixed with the sewage filter tank; a fixed gear is fixed at the inner bottom of the treatment tank, and the driving gear and the fixed gear are meshed with external teeth; a sewage discharge pipe is arranged on the outer side of the treatment tank and communicates with the sewage accumulation chamber.

[0007] Furthermore, a plurality of sewage filtering screws are provided, and the plurality of sewage filtering screws are arranged in a ring shape with equal angles therebetween.

[0008] Furthermore, a debris blocking angle located on one side of the sewage filtering screw is provided on the inner side of the sewage filtering tank, and the distance between the debris blocking angle and the outer side of the sewage filtering screw is gradually shortened from the inside to the outside.

[0009] Furthermore, a dirt accumulation seat located between the dirt filtering screws is fixedly installed on the inner side of the dirt filtering tank.

[0010] Furthermore, a directional rod located on one side of the filter screw is fixedly connected to the inner side of the filter tank, and a moving sleeve is sleeved on the outer side of the directional rod, and a clearing tooth plate cooperating with the outer side of the filter screw is fixedly connected to one side of the moving sleeve.

[0011] Furthermore, a dirt removal positioning groove is provided on the inner side of the filter tank, a positioning push rod is movably installed on the outer side of the moving sleeve, and a positioning push spring is provided between the positioning push rod and the moving sleeve.

[0012] Furthermore, a return positioning groove is provided on the inner side of the waste filter tank and is located on one side of the impurity removal positioning groove. The return positioning groove and the bottom of the impurity removal positioning groove are transitioned through a transposition inclined portion, and the transposition inclined portion is located at one end of the impurity removal positioning groove that is higher than the other end of the return positioning groove. A lifting top spring is provided on the outside of the directional rod between the bottom end of the moving sleeve and the waste filter tank.

[0013] Furthermore, a reset slope is provided at the top end of the side of the filter tank, which is used to connect the return positioning groove and the impurity removal positioning groove.

[0014] Furthermore, there is a spacing between the bottom of the reset slope and the transposition slope, and the spacing value is 2-4 times the length of the clearing tooth plate.

[0015] The present invention has the following beneficial effects:

[0016] The present application provides an industrial sludge harmless treatment equipment, which has a unique design in that the filter screw is arranged vertically on the filter tank. When the filter tank is driven to rotate, the driving gear and the fixed gear coaxial with the filter screw rotate relative to each other, and this interaction causes the filter screw to rotate. This rotational motion plays a key role in two aspects:

[0017] First, the precise thread pitch between the filter screws allows for efficient sludge filtration. This design allows the sludge to be evenly distributed and screened as it passes through the thread pitch, achieving efficient solid-liquid separation.

[0018] Secondly, as the filter screw rotates, the solid particles on its outer side are affected by the rotation of the screw thread, generating a downward conveying trend. This dynamic process effectively causes the solid particles to quickly settle at the bottom of the filter tank, thereby accelerating the separation of solids and liquids during the treatment process.

[0019] In summary, the industrial sludge harmless treatment equipment cleverly combines the rotating motion of the filter screw and the specific thread design, which not only achieves efficient screw filtration, but also significantly accelerates the deposition of solid particles at the bottom of the filter tank, thereby improving the efficiency and effect of the entire treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0021] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure;

[0023] Figure 2 It is a schematic diagram of the overall internal three-dimensional structure;

[0024] Figure 3 for Figure 2 The enlarged structural diagram at E in the middle;

[0025] Figure 4 This is a schematic diagram of the bottom drive of the filter tank;

[0026] Figure 5 This is a cross-sectional view of the sewage filter tank from top view;

[0027] Figure 6 for Figure 5 The enlarged structural diagram at F in the middle;

[0028] Figure 7 This is a schematic diagram of the connections of the various components on the sports set;

[0029] Figure 8 It is a schematic diagram of the local structure of the side of the sewage filter tank;

[0030] Fig. 9 for Figure 8 Enlarged structural diagram at G in the middle.

[0031] In the figure: 1, treatment tank; 100, sewage inlet; 101, sewage discharge pipe; 102, sewage accumulation chamber; 2, sewage accumulation seat; 3, sewage filter screw; 4, sewage filter tank; 400, sewage filter chamber; 401, debris blocking angle; 402, debris removal positioning groove; 403, reset slope; 404, return positioning groove; 405, transposition slope; 5, driving gear; 6, moving sleeve; 600, clearing tooth plate; 601, positioning top rod; 602, positioning top spring; 7, directional rod; 8, lifting top spring; 9, fixed gear; 10, driving motor. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] Embodiment 1

[0034] See also Figure 1 It can be seen that the treatment tank 1 is cylindrical, and the bottom is fixed by three supporting legs. Figure 2 It can be seen that a dirt storage chamber 102 is provided inside the treatment tank 1, and the filter tank 4 is arranged in the dirt storage chamber 102. The filter tank 4 and the treatment tank 1 are coaxially arranged to ensure that the filter tank 4 does not touch the inner wall of the dirt storage chamber 102 when rotating in the dirt storage chamber 102. An upwardly open filter chamber 400 is provided on the inner side of the filter tank 4, and a sewage inlet 100 for feeding sludge into the filter chamber 400 is provided on the surface of the treatment tank 1, which is also a sludge feeding inlet.

[0035] For the drive and filtration process of the filter tank 4, refer to Figure 4 It can be seen that a filter screw 3 is movably installed on the side wall of the filter tank 4, and the outer side pitch of the filter screw 3 is the same. The bottom of the filter screw 3 passes through the filter tank 4 and a driving gear 5 is fixedly installed on the bottom of the filter tank 4. A driving motor 10 coaxially fixed with the filter tank 4 is fixedly installed on the outer bottom of the treatment tank 1, so that the filter tank 4 is driven to rotate as a whole according to the rotation of the driving motor 10, and a fixed gear 9 meshing with the outer teeth of the driving gear 5 is fixedly installed on the inner bottom of the treatment tank 1, so that when the driving motor 10 drives the filter tank 4 to rotate, the filter tank 4 drives the driving gear 5 to rotate around the fixed gear 9, thereby forcing the driving gear 5 to drive the filter screw 3 to rotate synchronously.

[0036] Combination Figure 2 It can be clearly seen that one side of the filter screw 3 is located in the filter chamber 400, and the other side is located in the sewage accumulation chamber 102. Therefore, when the filter tank 4 drives the sludge to rotate, the sludge is filtered by utilizing the spacing between the filter screws 3, so that large particles remain in the filter chamber 400, and the filtered sludge is transported to the sewage accumulation chamber 102, and finally transported outward through the sewage discharge pipe 101 fixed on the outside of the treatment tank 1.

[0037] In order to ensure the efficiency of filtration, the filter screw 3 is provided with multiple Figure 4 The number given in the figure is six. In actual application, it can be adjusted as needed. The multiple filter screws 3 are arranged in a ring with equal angles to ensure the filtering efficiency.

[0038] During the sludge treatment process, the sludge is transported to the sewage filter chamber 400 through the sewage inlet 100. When the driving motor 10 drives the sewage filter tank 4 to rotate, the relative rotation between the driving gear 5 and the fixed gear 9 causes the sewage filter screw 3 to rotate. The sludge in the sewage filter chamber 400 is rotated by the sewage filter tank 4. The sludge is thrown outward due to the centrifugal force and filtered through the threaded groove on the outside of the sewage filter screw 3. The solid particles that cannot pass through the sewage filter screw 3 remain in the sewage filter chamber 400. After the sludge passes through the sewage filter screw 3 and enters the sewage storage chamber 102, it is finally discharged from the sewage discharge pipe 101.

[0039] At the same time, since the solid particles are also affected by the centrifugal force and stick to the outside of the filter screw 3, during the rotation of the filter screw 3, the threaded channel on the outside of the filter screw 3 will force the solid particles to move to the bottom of the filter chamber 400, so that the solid particles are quickly deposited at the bottom of the filter chamber 400, and the filtering frequency of the solid particles is reduced, thereby increasing the filtering efficiency of the sludge.

[0040] Embodiment 2

[0041] As a supplement to Example 1, please refer to Figure 5 It can be seen that the inner side of the sewage filter tank 4 is provided with a debris blocking angle 401 located on one side of the sewage filter screw 3, and the distance between the debris blocking angle 401 and the outer side of the sewage filter screw 3 is gradually shortened from the inside to the outside. When the sewage filter tank 4 rotates counterclockwise, the sewage filter screw 3 will also rotate counterclockwise due to the meshing transmission between the driving gear 5 and the fixed gear 9. Figure 5 It can be seen that when the solid particles are attached to the outer side of the filter screw 3 and the debris retaining angle 401 by centrifugal force, as the solid particles move outward, the distance between the debris retaining angle 401 and the filter screw 3 is shortened, so that the solid particles are squeezed on the outer side of the filter screw 3. Under the influence of the outer thread of the filter screw 3, the solid particles tend to be transported downward, thereby completing the deposition of the solid particles. Similarly, when the solid particles are far away from the debris retaining angle 401, since the filter screw 3 rotates counterclockwise, there will be no problem of solid particles being blocked between the filter screw 3 and the filter tank 4.

[0042] In order to further make the sludge in the filter chamber 400 flow to the side of the filter screw 3, refer to Figure 5 It can be seen that a dirt storage seat 2 located between the dirt filter screws 3 is fixedly installed on the inner side of the dirt filter tank 4, and the shape of the dirt storage seat 2 is approximately a triangular prism. Therefore, when the sludge in the dirt filter chamber 400 is diverted through the dirt storage seat 2, the sludge is further flowed toward the dirt filter screw 3 due to the inclined surface of the dirt storage seat 2, thereby accelerating the filtering efficiency.

[0043] Embodiment 3

[0044] Further improvements are made on the basis of the first and second embodiments. With regard to the second embodiment, although the rotation of the filter screw 3 can reduce the obstruction between the filter screw 3 and the filter tank 4, since the thread groove spacing on the outside of the filter screw 3 is fixed, when the volume of the solid particles is just stuck in the thread spacing on the outside of the filter screw 3, the thread groove on the outside of the filter screw 3 will be blocked. As mentioned above, the filtration of the sludge mainly depends on the thread groove on the outside of the filter screw 3. When it is blocked, the filtration efficiency will be reduced. In order to solve this problem, please refer to From the figure, it can be seen that the inner side of the filter tank 4 is fixedly connected with a directional rod 7 located on one side of the filter screw 3, and the outer side of the directional rod 7 is provided with a moving sleeve 6, wherein one side of the moving sleeve 6 is fixedly connected with a clearing tooth plate 600 that cooperates with the outer side of the filter screw 3, so that during the rotation of the filter screw 3, the clearing tooth plate 600 also has a tendency to move downward. Since the clearing tooth plate 600 is present in the threaded groove on the outer side of the filter screw 3, the cleaning tooth plate 600 can be scraped to clean the threaded groove on the outer side of the filter screw 3.

[0045] In order to achieve the limitation of the moving sleeve 6, when the cleaning tooth plate 600 encounters fixed particles stuck on the outside of the filter screw 3, it has sufficient strength to scrape the solid particles out of the outside of the filter screw 3. Figure 6 , Figure 7 and Fig. 9 It can be seen that a debris removal positioning groove 402 is provided on the inner side of the sewage filter tank 4, and the debris removal positioning groove 402 is a vertical groove, and a positioning push rod 601 is movably installed on the outer side of the moving sleeve 6, and a positioning push spring 602 is provided between the positioning push rod 601 and the moving sleeve 6, so that the positioning push rod 601 is pushed outward according to the elastic force of the positioning push spring 602, so that the positioning push rod 601 is pushed in the debris removal positioning groove 402 for limiting, to ensure that in the actual blockage clearing process, when the clearing tooth plate 600 encounters solid particles stuck on the outside of the sewage filter screw 3, the directional rod 7 limits the center line of the moving sleeve 6, and the positioning push rod 601 is stuck in the debris removal positioning groove 402 to limit the deflection of the moving sleeve 6, so that the clearing tooth plate 600 has sufficient strength to scrape out the solid particles stuck on the outside of the sewage filter screw 3, thereby ensuring the strength of the clearing.

[0046] Embodiment 4

[0047] As a supplement to the third embodiment, since the filter screw 3 will continue to rotate counterclockwise with the rotation of the filter tank 4, the cleaning tooth plate 600 can only scrape along the side of the filter screw 3 once, and when the cleaning tooth plate 600 descends to the outer bottom of the moving sleeve 6, it cannot be scraped again. A single cleaning is obviously not enough. In order to solve this problem, the fourth embodiment of the present invention can refer to Figure 6 , Figure 8 and Fig. 9As can be seen, the inner side of the filter tank 4 is provided with a return positioning groove 404 located on one side of the impurity removal positioning groove 402, and the return positioning groove 404 and the impurity removal positioning groove 402 are arranged in parallel. Figure 6 It can be seen that the depth of the impurity removal positioning groove 402 is deeper than that of the return positioning groove 404 , so that when the positioning push rod 601 enters the return positioning groove 404 from the impurity removal positioning groove 402 , the positioning push rod 601 will further compress the positioning push spring 602 .

[0048] For the transition between the impurity removal positioning groove 402 and the return positioning groove 404, refer to Fig. 9 It can be seen that the bottom of the return positioning groove 404 and the impurity removal positioning groove 402 are transitioned through the transposition inclined portion 405, and the transposition inclined portion 405 is located at one end of the impurity removal positioning groove 402 higher than the end of the return positioning groove 404, so that when the filter screw 3 rotates, the cleaning tooth plate 600 drives the moving sleeve 6 and the positioning push rod 601 to move downward synchronously, and as the positioning push rod 601 moves downward to the transposition inclined portion 405, the positioning push rod 601 is guided by the transposition inclined portion 405 to push the moving sleeve 6 to deflect along the directional rod 7, so that the positioning push rod 601 gradually enters the bottom of the return positioning groove 404, combined with Figure 3 It can be seen that a lifting top spring 8 located on the outside of the directional rod 7 is provided between the bottom end of the moving sleeve 6 and the filter tank 4, so that during the downward movement of the moving sleeve 6, the lifting top spring 8 will be compressed synchronously, and when the moving sleeve 6 is deflected according to the transposition inclined portion 405 and enters the bottom of the return positioning groove 404, the clearing tooth plate 600 will also be separated from the side of the filter screw 3 due to the deflection of the moving sleeve 6. When the clearing tooth plate 600 is separated from the outer restriction of the filter screw 3, it is affected by the elastic force of the lifting top spring 8 to make the positioning top rod 601 move upward along the return positioning groove 404, thereby realizing the upward movement of the moving sleeve 6, so as to facilitate the clearing work on the outer side of the filter screw 3 again.

[0049] In order to reset the positioning push rod 601 to the impurity removal positioning groove 402 again, Figure 8 It can be seen that a reset slope 403 is provided at the top of the side of the filter tank 4. Figure 6It can be seen that the reset slope 403 is used to connect the return positioning groove 404 and the impurity removal positioning groove 402. As mentioned above, the impurity removal positioning groove 402 has a greater groove depth than the return positioning groove 404, so that one end of the reset slope 403 is connected to the return positioning groove 404, and the other end is placed in the middle of the impurity removal positioning groove 402. The reset slope 403 is arranged in an inclined manner as a whole. When the positioning push rod 601 is affected by the elastic force of the positioning push spring 602, it will follow the reset slope 403 into the impurity removal positioning groove 40 2, so that the clearing tooth plate 600 enters the outer side of the filter screw 3 again to clear the blockage, and because one end of the reset slope 403 is located in the middle position of the impurity removal positioning groove 402, when the positioning push rod 601 enters the impurity removal positioning groove 402 from the reset slope 403, the positioning push rod 601 is further extended outward by the elastic force of the positioning push spring 602, preventing the impurity removal positioning groove 402 from deflecting in the direction of the reset slope 403. In this way, the positioning push rod 601 has a non-returning effect.

[0050] As an improvement of the fourth embodiment, refer to Figure 7 As can be seen from the figure, the length of the cleaning tooth plate 600 is relatively large. The cleaning tooth plate 600 shown in the figure has five teeth, which makes the cleaning more thorough. At the same time, when the cleaning tooth plate 600 returns to the top of the filter screw 3 each time, it can ensure that the outside of the filter screw 3 is completely cleared. However, in actual application, since the total amount of sludge in the filter chamber 400 will be continuously reduced with the filtration, the actual highest filtering position of the filter screw 3 will continue to move downward, and each time the cleaning starts from the top of the filter screw 3, the useless cleaning stroke will be increased. In addition, as the total amount of sludge in the filter chamber 400 decreases, the amount of solid particles retained in the filter chamber 400 accounts for an increasingly large proportion of the sludge, which indirectly causes the outside of the filter screw 3 to be aggravated. In order to increase the frequency of cleaning the filter screw 3, refer to Fig. 9 It can be seen that there is a distance between the bottom of the reset slope 403 and the transposition slope 405, and the distance value is generally 2-4 times the length of the cleaning tooth plate 600. Therefore, in actual application, the cleaning tooth plate 600 follows the filter screw 3 downward to clean the solid particles stuck in the side wall of the filter screw 3. When the positioning push rod 601 enters the return positioning groove 404 through the transposition slope 405, the cleaning tooth plate 600 will be deflected away from the filter screw 3, but the cleaning tooth plate 600 is also located on the outside of the thread groove of the filter screw 3. Combined with the above, the length of the filter screw 3 itself is relatively large, and the sludge will be output outward through the thread groove on the outside of the filter screw 3, and the sludge impacting outward will act on the cleaning tooth plate 600. Figure 6It can be seen that when the positioning push rod 601 enters the return positioning groove 404, the sludge on the outside of the filter screw 3 impacts the clearing tooth plate 600, which will make the clearing tooth plate 600 have a tendency to move counterclockwise. As mentioned above, when the positioning push rod 601 enters the return positioning groove 404 and the reset inclined surface 403 area, the elastic force of the positioning push spring 602 makes the positioning push rod 601 tend to move toward the impurity removal positioning groove 402. However, at this time, as the sludge impacts the clearing tooth plate 600, the force of the positioning push rod 601 moving into the impurity removal positioning groove 402 is overcome. As the movement sleeve 6 is continuously pushed upward by the lifting push spring 8, when the clearing tooth plate 600 is higher than the sludge filtering position where the filter screw 3 goes out, it cannot The anti-blocking tooth plate 600 is maintained to continue to deflect counterclockwise. At this time, the moving sleeve 6 is pushed by the elastic force of the positioning push spring 602, so that the positioning push rod 601 enters the impurity removal positioning groove 402 along the reset inclined surface 403, ensuring that the anti-blocking tooth plate 600 is higher than the filtering part on the outer side of the filter screw 3. The anti-blocking tooth plate 600 will directly enter the outer side of the filter screw 3 to perform the anti-blocking work, thereby reducing the useless cleaning of the unfiltered part of the filter screw 3. As the amount of sludge in the filter chamber 400 decreases, the length of the anti-blocking tooth plate 600 cleaning the outer side of the filter screw 3 is also shortened, which leads to an increase in the frequency of the anti-blocking tooth plate 600 cleaning the filter screw 3, thereby avoiding the phenomenon of easy blockage when there is too little sludge in the filter chamber 400.

[0051] As mentioned above, since there is a certain distance between the reset inclined surface 403 and the transposition inclined portion 405, the positioning push rod 601 is restricted from crossing this area when moving from the return positioning groove 404. The reason for this design is that, as mentioned above, as the amount of sludge in the filter chamber 400 decreases, its clearing length is also shortened, and the clearing tooth plate 600 also has a certain length. During the clearing process, the clearing tooth plate 600 is placed in the threaded groove outside the filter screw 3, which will inevitably affect the filtration of the sludge. If the clearing tooth plate 600 always shortens the cleaning length according to the total amount of sludge in the filter chamber 400, the filtration efficiency will be affected due to the obstruction of the clearing tooth plate 600. In order to avoid this phenomenon, the minimum clearing length of the clearing tooth plate 600 is designed, which also avoids the influence of the clearing tooth plate 600 itself on the filtration of less sludge.

Claims

1. An industrial sludge harmless treatment equipment, characterized in that: include: A treatment tank (1) is provided with a dirt storage chamber (102) inside, and a dirt filter tank (4) is coaxially arranged inside the treatment tank (1); A sewage filter cavity (400) is provided on the inner side of the sewage filter tank (4), and a sewage inlet (100) is provided on the surface of the treatment tank (1); A filter screw (3) is movably mounted on the side wall of the filter tank (4), and a driving gear (5) is fixedly mounted on the bottom of the filter screw (3); A driving motor (10) is arranged at the outer bottom of the processing tank (1), and the output shaft is coaxially fixed to the sewage filter tank (4); A fixed gear (9) is fixed to the inner bottom of the processing tank (1), and the driving gear (5) and the fixed gear (9) are externally meshed; A sewage discharge pipe (101) is arranged outside the treatment tank (1) and communicates with the sewage storage chamber (102); A plurality of sewage filtering screw rods (3) are provided, and the plurality of sewage filtering screw rods (3) are arranged in a ring-like manner at equal angles. The inner side of the filter tank (4) is provided with a debris blocking angle (401) located on one side of the filter screw (3), and the distance between the debris blocking angle (401) and the outer side of the filter screw (3) gradually shortens from the inside to the outside; A dirt accumulation seat (2) located between the dirt filtering screws (3) is fixedly mounted on the inner side of the dirt filtering tank (4); The inner side of the sewage filter tank (4) is fixedly connected to a directional rod (7) located on one side of the sewage filter screw (3), and the outer side of the directional rod (7) is sleeved with a moving sleeve (6), and one side of the moving sleeve (6) is fixedly connected to a clearing tooth plate (600) that cooperates with the outer side of the sewage filter screw (3); A dirt removal positioning groove (402) is provided on the inner side of the filter tank (4), a positioning push rod (601) is movably mounted on the outer side of the moving sleeve (6), and a positioning push spring (602) is provided between the positioning push rod (601) and the moving sleeve (6); A return positioning groove (404) is provided on the inner side of the dirt filter tank (4) and is located on one side of the impurity removal positioning groove (402). A transition is formed between the return positioning groove (404) and the bottom of the impurity removal positioning groove (402) via a transposition inclined portion (405). An end of the transposition inclined portion (405) located at the impurity removal positioning groove (402) is higher than an end of the return positioning groove (404). A lifting top spring (8) located on the outer side of the directional rod (7) is provided between the bottom end of the moving sleeve (6) and the dirt filter tank (4). A reset slope (403) is provided at the top end of the side of the filter tank (4) and is used to connect the return positioning groove (404) and the impurity removal positioning groove (402).

2. The harmless treatment equipment for industrial sludge according to claim 1 is characterized in that: There is a spacing between the bottom of the reset inclined surface (403) and the transposition inclined portion (405), and the spacing value is 2-4 times the length of the clearing tooth plate (600).

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