A multi-stage treatment equipment for chemical wastewater

Abstract

The present invention belongs to the technical field of chemical sewage treatment, and specifically is a multi-stage treatment device for chemical sewage, comprising a box body, wherein a primary cavity and a secondary cavity are provided in the box body, and upper filter screens are installed in the primary cavity and the secondary cavity; an installation box is installed on the box body, and a liquid pump is installed in the installation box, and the liquid pump pumps the sewage in the primary cavity into a mixer, and the mixer automatically extracts a treatment agent and mixes it into the sewage, and the mixer sends the sewage into the secondary cavity; a liquid inlet pipe is installed above the upper filter screen in the primary cavity, and the opening of the mixer in the secondary cavity is located above the upper filter screen, and a discharge pipe is installed at the bottom of the secondary cavity; the present invention has a simple structure, and a mixer can be used to add a quantitative treatment agent to a quantitative sewage, so that the amount of treatment agent added is appropriate, and it is avoided that too much or too little treatment agent is added to the sewage, which affects the increase of sewage treatment cost and the sewage treatment effect.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical wastewater treatment, in particular to a multi-stage treatment device for chemical wastewater. Background Art

[0002] The main purpose of chemical wastewater treatment is to protect the environment and human health, as well as to achieve sustainable development. Chemical wastewater contains a large amount of harmful substances, including organic matter, heavy metals, suspended solids, etc. At the same time, organic matter and heavy metals in chemical wastewater have potential hazards to human health. For example, the degradation of organic matter produces toxic substances, and heavy metals will accumulate in the food chain. If these pollutants are directly contacted or ingested without treatment, it will pose a serious threat to human health.

[0003] In the existing multi-stage treatment of chemical wastewater, some quantitative treatment agents are usually added manually into the treatment tank. Manual addition of treatment agents requires manual operation and control, which requires a lot of labor and operation costs, and the labor cost will also increase. Some are added automatically by machines. However, during automatic addition, since the amount of sewage each time is not certain, errors are prone to occur during the automatic addition process, which may lead to inaccurate dosage of treatment agents and affect the treatment effect. Summary of the invention

[0004] In order to make up for the shortcomings of the prior art, a mixer is used to add a quantitative treatment agent to a quantitative sewage, so that the amount of treatment agent added is appropriate, avoiding adding too much or too little treatment agent in the sewage, which increases the sewage treatment cost and affects the sewage treatment effect. The present invention proposes a multi-stage treatment equipment for chemical sewage.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows: the multi-stage treatment equipment for chemical wastewater of the present invention comprises a box body, a box cover is installed on the box body, a primary cavity and a secondary cavity are opened in the box body, an upper filter screen is installed in the primary cavity and the secondary cavity, and the box cover seals the openings of the primary cavity and the secondary cavity;

[0006] The box body is provided with an installation box, the installation box includes a component cavity and a liquid storage cavity, the component cavity is provided with a liquid pump, the liquid pump is provided with a hose 1 and a hose 2, the hose 1 is connected to the bottom of the primary cavity, the hose 2 is connected to a mixer at one end away from the liquid pump, the other end of the mixer is connected to the top of the secondary cavity, the mixer is provided with a hose 3, the hose 3 is connected to the liquid storage cavity, the mixer is a venturi tube mixer with an adjustable mixing ratio, the liquid storage cavity contains a treatment agent, and the liquid storage cavity is provided with an addition tube;

[0007] A liquid inlet pipe is installed above the upper filter screen in the primary cavity, an opening of the mixer in the secondary cavity is located above the upper filter screen, and a discharge pipe is installed at the bottom of the secondary cavity.

[0008] Preferably, an installation cavity is provided at the bottom of the box body, a motor is installed in the installation cavity, a rotating shaft is installed in the primary cavity and the secondary cavity, the rotating shaft passes through the middle of the upper filter screen, a spiral plate is installed on the rotating shaft, the rotating shaft is driven by the motor, a collecting box is installed in the box body, the collecting box adopts a drawer-type design, an inlet is provided on the collecting box, a collecting port is provided on the inner wall of the primary cavity and the secondary cavity, and the collecting port is communicated with the inlet;

[0009] The spiral plate is provided with a through hole, and the through hole is located at a position of the spiral plate close to the inner wall of the primary cavity and the secondary cavity, and the lower end of the spiral plate is located above the upper filter screen.

[0010] Preferably, a liquid conducting groove is formed on the inner wall of the primary cavity and the secondary cavity, the lower end of the liquid conducting groove is located below the upper filter screen, the upper end of the liquid conducting groove is flush with the collecting port, and a blocking brush is installed at the opening of the liquid conducting groove.

[0011] Preferably, a cleaning brush is installed on the lower surface of the box cover, and the bristles of the cleaning brush are in contact with the upper end of the spiral plate.

[0012] Preferably, a protrusion is provided on the surface of the spiral plate, and the length direction of the protrusion is the same as the radial direction of the spiral plate.

[0013] Preferably, an extrusion ring is installed at the lower end of the spiral plate, and an upper protrusion is installed on the extrusion ring;

[0014] The upper filter screens in the primary cavity and the secondary cavity are slidably installed, and a lower protrusion is installed at the edge of the upper filter screen, and the upper protrusion and the lower protrusion cooperate with each other;

[0015] A spring is installed below the upper filter screen, and the spring pushes the upper filter screen to move toward the direction close to the spiral plate.

[0016] Preferably, a lower filter screen is fixedly installed in the primary cavity and the secondary cavity, the lower filter screen is located below the upper filter screen, and the mesh diameter of the upper filter screen is larger than the mesh diameter of the lower filter screen;

[0017] A notch is provided at the edge of the upper filter screen, a one-way plate is installed in the notch, an elastic sheet and a stopper are installed on the one-way plate, one end of the elastic sheet is fixedly connected to the one-way plate, and the other end of the elastic sheet is movably overlapped on the stopper, and the elastic sheet allows the liquid below the notch to pass through the notch and move upward in one direction.

[0018] Preferably, the housing and the components including the housing are a component unit, the processing equipment comprises one or more component units connected in series, and the processing agents added into the component units are allowed to be inconsistent.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The multi-stage treatment equipment for chemical wastewater described in the present invention is provided with a primary chamber, a secondary chamber, a liquid pump, a mixer and a liquid storage chamber, so that the wastewater in the primary chamber is pumped into the mixer through the liquid pump after preliminary filtration and separation, and a quantitative treatment agent is added to a quantitative wastewater through the mixer to make the added amount of treatment agent appropriate, thereby avoiding adding too much or too little treatment agent to affect the wastewater treatment effect. At the same time, the mixer sends the wastewater mixed with the treatment agent into the secondary chamber for filtration treatment again, thereby improving the wastewater treatment effect and treatment efficiency through multi-stage treatment of the wastewater.

[0021] 2. The multi-stage treatment equipment for chemical wastewater described in the present invention, by arranging a spiral plate, a collecting box, an upper filter screen, a lower filter screen, an upper protrusion and a lower protrusion, collects impurities in the primary cavity and the secondary cavity by the spiral plate and sends them into the collecting box, so as to avoid the accumulation of impurities and the influence of the normal use of the treatment equipment. At the same time, through the common use of the upper filter screen and the lower filter screen, the effect of sewage filtration and separation is improved. In addition, when the spiral plate rotates, it will drive the upper filter screen to vibrate, so that the liquid will impact the upper filter screen and the lower filter screen, so as to avoid the adhesion of impurities, which will cause the filter screen to be blocked and the normal use of the treatment equipment to be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 is a front view of the processing device of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the processing device of the present invention in the first direction;

[0025] Figure 3 It is a schematic diagram of the internal structure of the processing device of the present invention in the second direction;

[0026] Figure 4 is a schematic diagram of the structure of the spiral plate in the processing device of the present invention, wherein the through holes and the protrusions are not marked;

[0027] Figure 5 It is a structural schematic diagram of a one-way plate in the processing equipment of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the collection box in the processing equipment of the present invention;

[0029] Figure 7 yes Figure 2A partial enlarged view of the middle part;

[0030] Figure 8 yes Figure 4 A partial enlarged view of point B in the middle;

[0031] In the figure: box body 1, secondary chamber 11, discharge pipe 111, primary chamber 12, liquid inlet pipe 121, installation chamber 13, motor 131, liquid guide groove 14, blocking brush 141, collecting port 15, installation box 2, component chamber 23, liquid storage chamber 22, adding pipe 221, liquid pump 23, hose 1 231, hose 2 232, mixer 24, hose 3 241, rotating shaft 3, spiral plate 31, extrusion ring 311, upper protrusion 312, upper filter screen 32, notch 321, one-way plate 322, elastic sheet 323, block 324, lower protrusion 325, lower filter screen 33, box cover 4, cleaning brush 41, collecting box 5, inlet 51. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figures 1 to 8 As shown, a multi-stage treatment device for chemical wastewater of the present invention comprises a box body 1, a box cover 4 is installed on the box body 1, a primary chamber 12 and a secondary chamber 11 are opened in the box body 1, an upper filter screen 32 is installed in the primary chamber 12 and the secondary chamber 11, and the box cover 4 seals the openings of the primary chamber 12 and the secondary chamber 11;

[0034] The box body 1 is provided with an installation box 2, wherein the installation box 2 includes a component chamber 21 and a liquid storage chamber 22, wherein a liquid pump 23 is provided in the component chamber 21, wherein a hose 1 231 and a hose 2 232 are provided on the liquid pump 23, wherein the hose 1 231 is connected to the bottom of the primary chamber 12, wherein one end of the hose 232 away from the liquid pump 23 is connected to a mixer 24, wherein the other end of the mixer 24 is connected to the top of the secondary chamber 11, wherein a hose 3 241 is provided on the mixer 24, wherein the hose 3 241 is connected to the liquid storage chamber 22, wherein the mixer 24 is a venturi tube mixer 24 with an adjustable mixing ratio, wherein a treatment agent is contained in the liquid storage chamber 22, wherein an addition pipe 221 is provided on the liquid storage chamber 22;

[0035] A liquid inlet pipe 121 is installed above the upper filter screen 32 in the primary chamber 12, an opening of the mixer 24 in the secondary chamber 11 is located above the upper filter screen 32, and a discharge pipe 111 is installed at the bottom of the secondary chamber 11;

[0036] During operation, the treatment agent used to treat sewage, such as flocculants, regulators, etc., is added from the adding pipe 221 into the liquid storage chamber 22, and then the sewage is added from the liquid inlet pipe 121 into the primary chamber 12. At this time, the liquid pump 23 is started by the controller to pump the sewage in the primary chamber 12 into the mixer 24, so that the mixer 24 mixes the treatment agent in the liquid storage chamber 22 with the sewage, and then the sewage is sent to the secondary chamber 11 for treatment, and the treated sewage is discharged from the treatment equipment from the discharge pipe 111;

[0037] At the same time, since the mixer 24 is a Venturi tube, when the liquid pump 23 pumps the sewage in the primary chamber 12 into the mixer 24, the mixer 24 will automatically extract the treatment agent and mix the treatment agent with the sewage, so that when the treatment equipment adds the agent, it can add the agent according to the amount of sewage extracted and pumped by the liquid pump 23, ensuring that the amount of agent added is appropriate, avoiding too little agent added when the amount of sewage is too much, affecting the sewage treatment effect, or too much agent added when the amount of sewage is too little, causing agent waste;

[0038] At the same time, since the upper filter screen 32 is installed in both the primary chamber 12 and the secondary chamber 11, when the sewage enters the primary chamber 12, it will first be preliminarily filtered by the upper filter screen 32 to remove large impurities, reduce the number of impurities contained in the sewage during subsequent treatment, and avoid excessive and excessive impurities from affecting the suction of the sewage by the liquid pump 23 and the passage of the sewage through the mixer 24. At the same time, after the number of impurities contained in the sewage is reduced, the number of treatment agents added at the mixer 24 can also be reduced, the amount of treatment agents used can be reduced, and the cost of sewage treatment can be reduced. At the same time, the sewage mixed with the treatment agent will enter the upper filter screen 32 in the secondary chamber 11, so that the impurities gathered in the sewage under the influence of the treatment agent are separated by the upper filter screen 32, thereby improving the sewage treatment effect;

[0039] At the same time, by setting up the primary chamber 12 and the secondary chamber 11, the sewage is subjected to multi-stage filtration treatment, and a proper amount of treatment agent is added according to the amount of sewage, thereby improving the effect and efficiency of sewage treatment.

[0040] As an embodiment of the present invention, an installation cavity 13 is provided below the housing 1, a motor 131 is installed in the installation cavity 13, a rotating shaft 3 is installed in the primary cavity 12 and the secondary cavity 11, the rotating shaft 3 passes through the middle of the upper filter screen 32, a spiral plate 31 is installed on the rotating shaft 3, the rotating shaft 3 is driven by the motor 131, a collecting box 5 is installed in the housing 1, the collecting box 5 adopts a drawer-type design, an inlet 51 is provided on the collecting box 5, a collecting port 15 is provided on the inner wall of the primary cavity 12 and the secondary cavity 11, and the collecting port 15 is communicated with the inlet 51;

[0041] The spiral plate 31 is provided with a through hole, and the through hole is located at a position of the spiral plate 31 close to the inner wall of the primary cavity 12 and the secondary cavity 11, and the lower end of the spiral plate 31 is located above the upper filter screen 32;

[0042] During operation, after the sewage is filtered by the upper filter screen 32, the impurities in the sewage will be intercepted by the upper filter screen 32. When the treatment equipment continuously treats the sewage, the number of impurities separated in the primary chamber 12 and the secondary chamber 11 is relatively large, which can easily cause the upper filter screen 32 to be blocked, affecting the treatment effect and efficiency of the sewage. Therefore, the motor 131 is started by the controller, so that the motor 131 drives the rotating shaft 3 and the spiral plate 31 to rotate. Since the edge of the spiral plate 31 contacts the inner walls of the primary chamber 12 and the secondary chamber 11, the spiral plate 31 will collect the impurities above the upper filter screen 32 and transport them upward until the spiral plate 31 sends the impurities from the collection port 15 on the inner wall of the primary chamber 12 and the secondary chamber 11 into the collection box 5, thereby avoiding excessive accumulation of impurities in the primary chamber 12 and the secondary chamber 11, resulting in blockage of the upper filter screen 32 and affecting the normal use of the treatment equipment.

[0043] At the same time, when the collection box 5 is full of impurities, the staff manually pulls the collection box 5 out of the box body 1, then empties the impurities in the collection box 5, and then reinserts the collection box 5 into the box body 1 to avoid affecting the normal use of the processing equipment;

[0044] At the same time, by providing a through hole near the inner wall of the spiral plate 31, the liquid driven by the spiral plate 31 during rotation can fall back into the primary chamber 12 or the secondary chamber 11 from the through hole, thereby preventing the spiral plate 31 from simultaneously conveying sewage upward when conveying impurities upward, causing sewage to enter the collection box 5, resulting in sewage leakage, and affecting the normal use of the treatment equipment;

[0045] At the same time, since the opening of the liquid inlet pipe 121 in the primary chamber 12 and the opening of the mixer 24 in the secondary chamber 11 are both located above the upper filter screen 32, the sewage entering the housing 1 and the sewage after the treatment agent is added will fall onto the spiral plate 31. At this time, part of the sewage will flow downward along the surface of the spiral plate 31, and the other part will fall directly from the through hole on the spiral plate 31. In this process, part of the impurities in the sewage will remain on the spiral plate 31, so that the sewage and the impurities are initially separated, thereby improving the effect of the subsequent upper filter screen 32 on filtering the sewage and reducing its filtering pressure.

[0046] As an embodiment of the present invention, a liquid guide groove 14 is formed on the inner wall of the primary cavity 12 and the secondary cavity 11, the lower end of the liquid guide groove 14 is located below the upper filter screen 32, the upper end of the liquid guide groove 14 is flush with the collecting port 15, and a blocking brush 141 is installed at the opening of the liquid guide groove 14;

[0047] Since the diameter of the through hole on the spiral plate 31 is relatively small, and the amount of sewage driven upward by the spiral plate 31 is relatively large, when the amount of impurities contained in the sewage is relatively large, the through hole on the spiral plate 31 may be blocked, resulting in the sewage driven by the spiral plate 31 not being able to fall back into the primary chamber 12 or the secondary chamber 11, causing the sewage to enter the collection box 5, affecting the normal use of the treatment equipment. At the same time, by providing a liquid guide groove 14 on the inner wall of the primary chamber 12 and the secondary chamber 11, and closing the opening of the liquid guide groove 14 with a blocking brush 141, when the spiral plate 31 drives the sewage to move upward, the sewage can fall from the through hole on the spiral plate 31, and the sewage can also pass through the blocking brush 141 and fall from the liquid guide groove 14, thereby avoiding that after the through hole is blocked, the sewage is transported upward by the spiral plate 31, causing the sewage to enter the collection box 5, affecting the normal use of the treatment equipment;

[0048] At the same time, by installing a blocking brush 141 or a filter at the opening of the liquid guiding groove 14, it is ensured that the sewage can fall from the liquid guiding groove 14 and block the impurities transported on the spiral plate 31 to prevent these impurities from being driven down by the flowing sewage and affecting the cleaning effect of the spiral plate 31 on the impurities separated from the primary cavity 12 and the secondary cavity 11.

[0049] As an embodiment of the present invention, a cleaning brush 41 is installed on the lower surface of the box cover 4, and the bristles of the cleaning brush 41 are in contact with the upper end of the spiral plate 31;

[0050] When the impurities are transported to the uppermost end by the spiral plate 31, there is no sewage or a small amount of residual sewage on the spiral plate 31. At this time, the impurities are easily attached to the spiral plate 31, resulting in that when the spiral plate 31 rotates, the impurities cannot be smoothly released and sent to the collection box 5. Therefore, by installing a cleaning brush 41 on the box cover 4, the impurities transported to the uppermost end of the spiral plate 31 are swept by the cleaning brush 41 to avoid mutual adhesion and adhesion between the impurities and the spiral plate 31, making it convenient for the spiral plate 31 to send the impurities into the collection box 5, thereby ensuring the normal use of the processing equipment.

[0051] As an embodiment of the present invention, a protrusion is provided on the surface of the spiral plate 31, and the length direction of the protrusion is the same as the radial direction of the spiral plate 31;

[0052] By installing radially distributed protrusions on the spiral plate 31, impurities can be blocked by the protrusions when being transported by the spiral plate 31, thereby reducing the possibility of impurities sliding downward along the surface of the spiral plate 31 or impurities being driven downward by sewage, thereby ensuring the conveying effect of the spiral plate 31 on impurities, and allowing the impurities to be sent to the collecting box 5, thereby avoiding excessive amounts of impurities in the primary chamber 12 and the secondary chamber 11, which may affect the normal use of the treatment equipment.

[0053] As an embodiment of the present invention, a squeeze ring 311 is installed at the lower end of the spiral plate 31, and an upper protrusion 312 is installed on the squeeze ring 311;

[0054] The upper filter screen 32 in the primary cavity 12 and the secondary cavity 11 is slidably installed, and a lower protrusion 325 is installed at the edge of the upper filter screen 32, and the upper protrusion 312 and the lower protrusion 325 cooperate with each other;

[0055] A spring is installed below the upper filter screen 32, and the spring pushes the upper filter screen 32 to move toward the spiral plate 31;

[0056] When the spiral plate 31 rotates, the upper protrusion 312 on the extrusion ring 311 will periodically contact and squeeze the lower protrusion 325 on the upper filter screen 32, thereby producing a cam effect, causing the upper filter screen 32 to vibrate back and forth in the vertical direction. At the same time, during the vibration of the upper filter screen 32, the upper filter screen 32 will be impacted by the liquid, causing impurities in the mesh of the upper filter screen 32 to be separated, thereby avoiding clogging of the upper filter screen 32. At the same time, when the upper filter screen 32 moves upward, the upper filter screen 32 will throw the separated impurities upward to facilitate the separated impurities to contact the lower end of the rotating spiral plate 31, and then be transported upward by the spiral plate 31, and finally send the impurities into the collecting box 5, thereby preventing the impurities from staying on the surface of the upper filter screen 32. The spiral plate 31 is not easy to contact the impurities during the rotation process, which affects the conveying and cleaning effect of the spiral plate 31 on the impurities.

[0057] As an embodiment of the present invention, a lower filter screen 33 is fixedly installed in the primary cavity 12 and the secondary cavity 11, and the lower filter screen 33 is located below the upper filter screen 32, and the mesh diameter of the upper filter screen 32 is larger than the mesh diameter of the lower filter screen 33;

[0058] A notch 321 is provided at the edge of the upper filter screen 32, a one-way plate 322 is installed in the notch 321, an elastic sheet 323 and a stopper 324 are installed on the one-way plate 322, one end of the elastic sheet 323 is fixedly connected to the one-way plate 322, and the other end of the elastic sheet 323 is movably overlapped on the stopper 324, and the elastic sheet 323 allows the liquid below the notch 321 to pass through the notch 321 and move upward in one direction;

[0059] Since the lower filter screen 33 is fixedly installed, when the upper filter screen 32 moves upward, the liquid in the space between the upper filter screen 32 and the lower filter screen 33 cannot be replenished in time, and a negative pressure will be generated in the space between the upper filter screen 32 and the lower filter screen 33, so that the liquid impacts the upper filter screen 32 and the lower filter screen 33, and promotes the separation of impurities on the upper filter screen 32 and the lower filter screen 33, thereby avoiding clogging of the upper filter screen 32 and the lower filter screen 33. Similarly, when the upper filter screen 32 moves downward, a positive pressure will be generated in the space between the upper filter screen 32 and the lower filter screen 33, further impacting the upper filter screen 32 and the lower filter screen 33, cleaning them, and avoiding clogging.

[0060] At the same time, since the mesh holes of the upper filter 32 are relatively large and a notch 321 is installed on the upper filter 32 to allow liquid to move upward in one direction, when there is a negative pressure between the upper filter 32 and the lower filter 33, the impurities on the lower filter 33 and the upper filter 32 will be impacted between the two. Thereafter, when there is a positive pressure between the upper filter 32 and the lower filter 33, the impurities between the two will more easily pass through the notch 321 at the upper filter 32, thereby reaching the top of the upper filter 32, thereby improving the separation effect of impurities in the sewage and avoiding the possibility of clogging of the upper filter 32 and the lower filter 33.

[0061] As an embodiment of the present invention, the housing 1 and the components including the housing 1 are a component unit, the treatment device includes one or more component units connected in series, and the treatment agents added to the component units are allowed to be inconsistent;

[0062] Since the component unit is the smallest division of the treatment equipment with complete functions, in actual use, the staff can combine the component units in series according to the sewage treatment situation, carry out multi-stage treatment of the sewage, and add the same or different agents multiple times, thereby improving the sewage treatment effect and efficiency, expanding the scope of application of the treatment equipment, and at the same time, it can also facilitate the mobile transportation and assembly of the treatment equipment and reduce the cost of sewage treatment.

[0063] The specific workflow is as follows:

[0064] During operation, the treatment agent for treating sewage is added into the liquid storage chamber 22 from the addition pipe 221, and then the sewage is added into the primary chamber 12 from the liquid inlet pipe 121. At this time, the liquid pump 23 is started by the controller to pump the sewage in the primary chamber 12 into the mixer 24, so that the mixer 24 mixes the treatment agent in the liquid storage chamber 22 with the sewage, and then the sewage is sent into the secondary chamber 11 for treatment, and the treated sewage is discharged from the treatment equipment from the discharge pipe 111;

[0065] At the same time, since the mixer 24 is a venturi tube, the mixer 24 will automatically extract the treatment agent and mix the treatment agent with the sewage, so that when the treatment equipment adds the agent, it can add the corresponding amount of sewage extracted and pumped by the liquid pump 23;

[0066] At the same time, since the upper filter screen 32 is installed in both the primary chamber 12 and the secondary chamber 11, when the sewage enters the primary chamber 12, it will be initially filtered by the upper filter screen 32 to remove large impurities. At the same time, the sewage mixed with the treatment agent will enter the upper part of the upper filter screen 32 in the secondary chamber 11, so that the impurities accumulated in the sewage due to the treatment agent are separated by the upper filter screen 32.

[0067] At the same time, through the arrangement of the primary chamber 12 and the secondary chamber 11, the sewage undergoes multi-stage filtration treatment, and an appropriate amount of treatment agent is added according to the amount of sewage;

[0068] The motor 131 is started by the controller, so that the motor 131 drives the rotating shaft 3 and the spiral plate 31 to rotate. Since the edge of the spiral plate 31 contacts the inner walls of the primary chamber 12 and the secondary chamber 11, the spiral plate 31 collects impurities above the upper filter screen 32 and transports them upward until the spiral plate 31 transports the impurities from the collection port 15 on the inner walls of the primary chamber 12 and the secondary chamber 11 into the collection box 5.

[0069] At the same time, after the impurities in the collection box 5 are full, the staff manually pulls the collection box 5 out of the box body 1, then empties the impurities in the collection box 5, and then reinserts the collection box 5 into the box body 1;

[0070] At the same time, by opening a through hole at a position close to the inner wall of the spiral plate 31, the liquid driven by the spiral plate 31 during rotation can fall back into the primary cavity 12 or the secondary cavity 11 from the through hole;

[0071] At the same time, a liquid guide groove 14 is provided on the inner wall of the primary cavity 12 and the secondary cavity 11, and the opening of the liquid guide groove 14 is closed with a blocking brush 141, so that when the spiral plate 31 drives the sewage to move upward, the sewage can fall from the through hole on the spiral plate 31, and the sewage can also pass through the blocking brush 141 and fall from the liquid guide groove 14;

[0072] By installing a cleaning brush 41 on the box cover 4, the impurities transported to the uppermost end of the spiral plate 31 are swept by the cleaning brush 41, so as to avoid the impurities and the spiral plate 31 from being attached to each other and adhering to each other, so that the spiral plate 31 can conveniently transport the impurities into the collection box 5;

[0073] By installing radially distributed protrusions on the spiral plate 31, impurities can be blocked by the protrusions when being transported by the spiral plate 31, thereby reducing the possibility of impurities sliding downward along the surface of the spiral plate 31 or impurities being driven by sewage to flow downward;

[0074] When the spiral plate 31 rotates, the upper protrusion 312 on the squeezing ring 311 will periodically contact and squeeze the lower protrusion 325 on the upper filter screen 32, so that the upper filter screen 32 reciprocates in the vertical direction. At the same time, during the vibration of the upper filter screen 32, the upper filter screen 32 will be impacted by the liquid, so that the impurities in the mesh of the upper filter screen 32 will be separated. At the same time, when the upper filter screen 32 moves upward, the upper filter screen 32 will throw the separated impurities upward, so that the separated impurities can contact the lower end of the rotating spiral plate 31, and then be transported upward by the spiral plate 31.

[0075] Since the lower filter 33 is fixedly installed, when the upper filter 32 moves upward, the liquid in the space between the upper filter 32 and the lower filter 33 cannot be replenished in time, and a negative pressure is generated in the space between the upper filter 32 and the lower filter 33, so that the liquid impacts the upper filter 32 and the lower filter 33, and promotes the separation of impurities on the upper filter 32 and the lower filter 33. Similarly, when the upper filter 32 moves downward, a positive pressure is generated in the space between the upper filter 32 and the lower filter 33, which further impacts the upper filter 32 and the lower filter 33 and cleans them.

[0076] At the same time, since the meshes of the upper filter 32 are relatively large, and the upper filter 32 is provided with a notch 321 that allows the liquid to move upward in one direction, when there is a negative pressure between the upper filter 32 and the lower filter 33, the impurities on the lower filter 33 and the upper filter 32 will be impacted between the two. Afterwards, when there is a positive pressure between the upper filter 32 and the lower filter 33, the impurities between the two are more likely to pass through the notch 321 at the upper filter 32, thereby reaching the top of the upper filter 32.

[0077] In actual use, the staff can combine the component units in series according to the sewage treatment situation, carry out multi-stage treatment of the sewage, and add the same or different agents multiple times, so as to improve the sewage treatment effect and efficiency, expand the scope of application of the treatment equipment, and at the same time, facilitate the mobile transportation and assembly of the treatment equipment to reduce the cost of sewage treatment.

[0078] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A chemical wastewater multi-stage treatment device, comprising a box body (1), the box body (1) being provided with a box cover (4), the box body (1) being provided with a primary chamber (12) and a secondary chamber (11), the primary chamber (12) and the secondary chamber (11) being provided with an upper filter screen (32), the box cover (4) sealing the openings of the primary chamber (12) and the secondary chamber (11); Features: The housing (1) is provided with an installation box (2), the installation box (2) comprising a component chamber (21) and a liquid storage chamber (22), the component chamber (21) being provided with a liquid pump (23), the liquid pump (23) being provided with a first hose (231) and a second hose (232), the first hose (231) being connected to the bottom of the primary chamber (12), the second hose (232) being provided with a mixer (24) at one end away from the liquid pump (23), the other end of the mixer (24) being connected to the top of the secondary chamber (11), the mixer (24) being provided with a third hose (241), the third hose (241) being connected to the liquid storage chamber (22), the mixer (24) being a venturi tube mixer (24) with an adjustable mixing ratio, the liquid storage chamber (22) containing a treatment agent, the liquid storage chamber (22) being provided with an addition pipe (221); A liquid inlet pipe (121) is installed in the primary chamber (12) above the upper filter screen (32); an opening of the mixer (24) in the secondary chamber (11) is located above the upper filter screen (32); and a discharge pipe (111) is installed at the bottom of the secondary chamber (11); A mounting cavity (13) is provided below the housing (1), a motor (131) is installed in the mounting cavity (13), a rotating shaft (3) is installed in the primary cavity (12) and the secondary cavity (11), the rotating shaft (3) passes through the middle of the upper filter screen (32), a spiral plate (31) is installed on the rotating shaft (3), the rotating shaft (3) is driven by the motor (131), a collecting box (5) is installed in the housing (1), the collecting box (5) is of a drawer-type design, an inlet (51) is provided on the collecting box (5), a collecting port (15) is provided on the inner wall of the primary cavity (12) and the secondary cavity (11), the collecting port (15) and the inlet (51) are communicated with each other; The spiral plate (31) is provided with a through hole, the through hole is located at a position of the spiral plate (31) close to the inner wall of the primary cavity (12) and the secondary cavity (11), and the lower end of the spiral plate (31) is located above the upper filter screen (32); A liquid guide groove (14) is formed on the inner wall of the primary chamber (12) and the secondary chamber (11); the lower end of the liquid guide groove (14) is located below the upper filter screen (32); the upper end of the liquid guide groove (14) is flush with the collecting port (15); and a blocking brush (141) is installed at the opening of the liquid guide groove (14); The lower end of the spiral plate (31) is provided with an extrusion ring (311), and the extrusion ring (311) is provided with an upper protrusion (312); The upper filter screen (32) in the primary cavity (12) and the secondary cavity (11) is slidably installed, and a lower protrusion (325) is installed at the edge of the upper filter screen (32), and the upper protrusion (312) and the lower protrusion (325) cooperate with each other; A spring is installed below the upper filter screen (32), and the spring pushes the upper filter screen (32) to move toward the spiral plate (31); A lower filter screen (33) is fixedly installed in the primary cavity (12) and the secondary cavity (11), the lower filter screen (33) is located below the upper filter screen (32), and the mesh diameter of the upper filter screen (32) is larger than the mesh diameter of the lower filter screen (33); A notch (321) is provided at the edge of the upper filter screen (32), a one-way plate (322) is installed in the notch (321), an elastic sheet (323) and a stopper (324) are installed on the one-way plate (322), one end of the elastic sheet (323) is fixedly connected to the one-way plate (322), and the other end of the elastic sheet (323) is movably overlapped on the stopper (324), and the elastic sheet (323) allows liquid below the notch (321) to pass through the notch (321) and move upward in one direction.

2. A multi-stage chemical wastewater treatment equipment according to claim 1, characterized in that: A cleaning brush (41) is installed on the lower surface of the box cover (4), and the bristles of the cleaning brush (41) are in contact with the upper end of the spiral plate (31).

3. The multi-stage treatment equipment for chemical wastewater according to claim 1, characterized in that: A protrusion is provided on the surface of the spiral plate (31), and the length direction of the protrusion is the same as the radial direction of the spiral plate (31).

4. The multi-stage treatment equipment for chemical wastewater according to claim 1, characterized in that: The housing (1) and the components including the housing (1) form a component unit. The treatment device comprises one or more component units connected in series. The treatment agents added into the component units are allowed to be inconsistent.

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