A sewage treatment device for hydraulic construction

Abstract

The present invention relates to the technical field of sewage treatment, and discloses a sewage treatment device for hydraulic buildings. A conveying mechanism driven by a motor is arranged inside the sewage conveying box. The conveying mechanism is used to convey sewage into the chemical dosing channel inside the treatment tank. When the sewage is conveyed upward along the sewage conveying box, the sundries in the sewage will stay in the retention mechanism at the lower end of the sewage conveying box under the action of gravity; the motor drives the intermediate rotating shaft and the spiral blade to rotate through the driving mechanism at the front end of the treatment tank, and the intermediate rotating shaft drives the intermediate filter drum and the impeller to rotate. In the present invention, the sundries in the sewage will stay in the retention mechanism at the lower end of the sewage conveying box under the action of gravity, so that the removal of sundries in the sewage can be realized during the sewage conveying process; the rotation of the impeller mixes the sewage and the drug and then conveys them into the intermediate filter drum, and the simultaneous rotation of the intermediate rotating shaft, the spiral blade and the intermediate filter drum realizes the re-stirring and mixing of the sewage and the drug.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and specifically to a sewage treatment device for hydraulic construction. Background Technique

[0002] The sewage treatment technology in hydraulic construction mainly includes physical treatment method, chemical treatment method and biological treatment method. During the construction of hydraulic engineering, a large amount of sewage will be generated during earthwork excavation, concrete construction, stacking and transportation of building materials, etc. These construction sewage may contain harmful substances such as suspended solids, sediment, concrete slurry, chemical additives, etc. In the process of sewage treatment in hydraulic construction, adding drugs (flocculants, coagulants, conditioners, pH regulators, disinfectants, etc.) is a crucial link. By reasonably selecting and using different types of drugs, various pollutants in the sewage can be effectively removed, the water quality can be improved, and the environment and human health can be protected. However, before and after adding drugs, impurity removal treatment needs to be carried out on the sewage. The existing treatment devices independently carry out impurity removal operations on the sewage before and after adding drugs by using additional impurity removal equipment, resulting in high equipment input costs, and the entire process of impurity removal and drug addition is cumbersome. After adding drugs, once the mixing effect of the drug and the sewage is not good, the drug plays a limited role, and it will also lead to the situation that the sewage treatment is not in place. Therefore, we introduce a sewage treatment device for hydraulic construction. Summary of the Invention

[0003] The purpose of the present invention is to provide a sewage treatment device for hydraulic construction to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A sewage treatment device for hydraulic construction includes a treatment tank. A sewage delivery box is provided on the front side of the treatment tank. A delivery mechanism driven by a motor is provided inside the sewage delivery box. The delivery mechanism is used to deliver sewage into the drug addition channel inside the treatment tank, and a medicine feeding hopper for putting drugs into the drug addition channel is provided at the upper end of the front part of the treatment tank;

[0006] When the sewage is transported upward along the sewage delivery box, the sundries in the sewage will stay in the retention mechanism at the lower end of the sewage delivery box under the action of gravity;

[0007] A receiving cavity for accommodating an intermediate filter drum is provided inside the rear end of the treatment tank. A mechanical stirring mechanism is provided inside the intermediate filter drum. The mechanical stirring mechanism includes an intermediate rotating shaft with stirring rods and spiral blades located outside the intermediate rotating shaft. The rear end of the intermediate rotating shaft is fixed to the inner wall of the middle rear part of the intermediate filter drum, and an impeller located in the drug addition channel is fixed on the intermediate rotating shaft;

[0008] The motor drives the intermediate rotating shaft and the spiral blade to rotate through the drive mechanism at the front end of the treatment tank. The intermediate rotating shaft drives the intermediate filter drum and the impeller to rotate. When sewage and medicine enter the chemical addition channel, the impeller rotates to mix the sewage and the medicine and then transports them into the intermediate filter drum. Subsequently, the sewage is transported into the intermediate filter drum. After being filtered by the intermediate filter drum, the sewage enters the accommodation cavity;

[0009] An aeration mechanism is installed at the front end of the treatment tank. The intermediate rotating shaft also drives the fan blade in the aeration mechanism to rotate. Part of the air is introduced into the intermediate filter drum through the inner cavity of the intermediate rotating shaft, and the other part of the air is introduced into the accommodation cavity through the air duct to realize the aeration operation of the sewage.

[0010] Preferably, the retention mechanism includes an arc-shaped retention box fixed to the lower end of the sewage delivery box and an impurity temporary storage box fixed to the inner wall of the arc-shaped retention box. An impurity inlet is provided at the upper right of the impurity temporary storage box. A protective door located below the impurity temporary storage box is detachably installed at the bottom of the arc-shaped retention box.

[0011] Preferably, the motor is fixed to the upper side of the sewage delivery box;

[0012] The conveying mechanism includes a driving roller and a driven roller installed at both ends inside the sewage delivery box, a conveyor belt connected between the driving roller and the driven roller, two rows of L-shaped water scraping plates arranged on the outer side wall of the conveyor belt, a support wheel installed through a bracket at the connection between the arc-shaped retention box and the sewage delivery box, and a tensioning roller movably connected inside the arc-shaped retention box;

[0013] The output end of the motor is connected to the driving roller. The support wheel supports at the middle position of the outer side wall of the conveyor belt, and the tensioning roller supports on the lower inner wall of the conveyor belt.

[0014] Preferably, the inner diameter of the accommodation cavity is larger than the inner diameter of the chemical addition channel, and a ring groove for inserting the front end of the intermediate filter drum is provided at the front end of the accommodation cavity.

[0015] Preferably, filter holes are evenly distributed on the surface of the intermediate filter drum.

[0016] Preferably, a ring-shaped disc is provided at the rear end inside the intermediate filter drum. A side rotating shaft is fixedly penetrated through the middle of the spiral blade, and the rear end of the side rotating shaft is inserted into the corresponding shaft hole on the ring-shaped disc;

[0017] The rear end of the intermediate rotating shaft extends out through the middle hole in the middle of the ring-shaped disc and is fixed to the inner wall at the rear end of the intermediate filter drum.

[0018] Preferably, the stirring rod on the intermediate rotating shaft is located inside the intermediate filter drum, and the surface of the intermediate rotating shaft is provided with first spray holes communicated with the inner cavity inside the intermediate rotating shaft;

[0019] The driving mechanism includes an intermediate gear and a first pulley fixedly connected after the front end of the intermediate rotating shaft penetrates and extends out of the treatment tank, and a side gear fixed after the front end of the side rotating shaft penetrates and extends out of the treatment tank;

[0020] The side gear meshes with the side of the intermediate gear. The connecting shaft fixedly connected to the front end of the driving roller, and the front end of the connecting shaft extends out of the sewage delivery box and is fixedly connected with a second pulley. A belt is connected between the first pulley and the second pulley.

[0021] Preferably, the aeration mechanism includes an air collection cylinder fixed to the front end of the treatment tank. The inside of the air collection cylinder is formed into two cavities distributed front and back by an intermediate partition. The front end of the intermediate rotating shaft penetrates the intermediate partition and is connected with an air collection horn pipe. The rear end of the air collection horn pipe is communicated with the inner cavity inside the intermediate rotating shaft through an opening at the front end of the intermediate rotating shaft;

[0022] A connecting frame is installed on the inner wall of the air collection horn pipe, and the front end of the connecting frame is fixed to the middle of the rear end of the fan blade;

[0023] The front end of the air guide pipe is fixed to the intermediate partition, and the horn-shaped air inlet on the intermediate partition is communicated with the air guide pipe. The rear end of the air guide pipe extends into the inner wall of the accommodation cavity, and the part of the air guide pipe protruding from the inner wall of the accommodation cavity is provided with second spray holes.

[0024] Preferably, a protective net is further provided at the front end of the air collection cylinder, and a slot for the belt to extend out is further provided on the side of the air collection cylinder.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: When the motor of the present invention works, it drives the conveying mechanism to convey sewage upward along the sewage delivery box. During this process, the sundries in the sewage will stay in the retention mechanism at the lower end of the sewage delivery box under the action of gravity, so that the removal of sundries in the sewage can be realized during the sewage conveyance in hydraulic construction; the motor drives the intermediate rotating shaft and the spiral blade to rotate through the driving mechanism, and the intermediate rotating shaft drives the intermediate filter drum and the impeller to rotate. When the sewage and the drug enter the dosing channel, the impeller rotates to mix the sewage and the drug and then conveys them into the intermediate filter drum, and then conveys the sewage into the intermediate filter drum; the simultaneous rotation of the intermediate rotating shaft, the spiral blade and the intermediate filter drum realizes the re-stirring and mixing of the sewage and the drug generated by hydraulic construction; the intermediate rotating shaft also drives the fan blade in the aeration mechanism to rotate, and part of the air is introduced into the intermediate filter drum through the inner cavity of the intermediate rotating shaft, and the other part of the air is introduced into the accommodation cavity through the air guide pipe, so as to realize the aeration operation of the sewage, promote the growth and activity of aerobic microorganisms, and thus accelerate the oxidation and decomposition of organic pollutants and ammonia nitrogen and other pollutants in the sewage of hydraulic construction, achieving the purpose of purifying water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic exploded view of the overall assembly of the present invention;

[0027] Figure 2 It is a schematic exploded view of the aeration mechanism of the present invention;

[0028] Figure 3 It is a schematic three-dimensional structure view of the connection of the intermediate rotating shaft, impeller, intermediate gear, air collecting horn pipe and fan blade of the present invention;

[0029] Figure 4 It is a schematic exploded view of the connection between the mechanical stirring mechanism and the annular disc of the present invention;

[0030] Figure 5 It is a schematic three-dimensional structure view of the connection of the air collecting horn pipe, fan blade, driving mechanism, impeller, mechanical stirring mechanism and annular disc of the present invention;

[0031] Figure 6 It is a schematic three-dimensional structure view of the air collecting cylinder and the air guide pipe after disassembly of the present invention;

[0032] Figure 7 It is a schematic cross-sectional structure view of the connection of the sewage delivery box, delivery mechanism and retention mechanism of the present invention;

[0033] Figure 8 It is a schematic partial three-dimensional structure view of the connection between the L-shaped wiper and the conveyor belt of the present invention;

[0034] Figure 9 It is a schematic cross-sectional structure view of the treatment tank, air guide pipe, intermediate filter drum, spiral blade and intermediate rotating shaft provided in the present invention;

[0035] Figure 10 It is a schematic cross-sectional structure view of the connection of the treatment tank, liquid discharge pipe and air collecting cylinder of the present invention;

[0036] Figure 11 It is a schematic cross-sectional structure view of the connection of the treatment tank, liquid discharge pipe, driving mechanism, aeration mechanism and mechanical stirring mechanism of the present invention.

[0037] In the figure: 1, treatment tank; 1001, medicine feeding hopper; 1002, annular groove; 1003, medicine adding channel; 1004, accommodation cavity; 2, drain pipe; 3, driving mechanism; 31, intermediate gear; 32, first pulley; 33, side gear; 34, belt; 4, aeration mechanism; 41, air collecting cylinder; 42, cavity; 43, slotted opening; 44, air guide pipe; 441, horn-shaped air inlet; 45, second spray hole; 46, air collecting horn pipe; 47, connecting frame; 48, fan blade; 49, protective net; 5, mechanical stirring mechanism; 51, intermediate rotating shaft; 52, first spray hole; 53, stirring rod; 54, opening; 55, spiral blade; 56, side rotating shaft; 6, impeller; 7, annular disc; 71, intermediate hole; 8, intermediate filter drum; 81, filter hole; 9, sewage conveying box; 91, motor; 92, second pulley; 93, driving roller; 94, arc-shaped retention box; 95, protective door; 96, impurity temporary storage box; 97, impurity inlet; 98, bracket; 99, supporting wheel; 100, tensioning roller; 101, conveyor belt; 102, driven roller; 103, L-shaped water scraping plate. Detailed implementation manner

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiment:

[0040] Please refer to Figures 1-11 , the present invention provides a technical solution:

[0041] A sewage treatment device for hydraulic construction includes a treatment tank 1. A sewage conveying box 9 is provided on the front side of the treatment tank 1, and a drain pipe 2 communicating with the accommodation cavity 1004 is provided at the bottom of the rear end of the treatment tank 1.

[0042] A conveying mechanism driven by a motor 91 is provided inside the sewage conveying box 9, and the motor 91 is fixed on the upper part of the side of the sewage conveying box 9;

[0043] The conveying mechanism includes a driving roller 93 and a driven roller 102 installed at both ends inside the sewage conveying box 9, a conveyor belt 101 connected between the driving roller 93 and the driven roller 102, two rows of L-shaped water scraping plates 103 arranged on the outer side wall of the conveyor belt 101, a supporting wheel 99 installed through a bracket 98 at the connection between the arc-shaped retention box 94 and the sewage conveying box 9, and a tensioning roller 100 movably connected inside the arc-shaped retention box 94;

[0044] The output end of the motor 91 is connected to the driving roller 93. The supporting wheel 99 is supported at the middle position of the outer side wall of the conveyor belt 101, and the tensioning roller 100 is supported on the inner wall of the lower part of the conveyor belt 101.

[0045] While the tensioning roller 100 is used to tension the conveyor belt 101, it can also enable the conveyor belt 101 to pass through the arc-shaped retention box 94. In this way, when the conveyor belt 101 rotates, the L-shaped water scraping plate 103 on the conveyor belt 101 can introduce sewage into the arc-shaped retention box 94.

[0046] The conveying mechanism is used to convey sewage into the chemical dosing channel 1003 inside the treatment tank 1, and a chemical dosing hopper 1001 for putting drugs into the chemical dosing channel 1003 is provided at the upper end of the front part of the treatment tank 1.

[0047] When the sewage is conveyed upward along the sewage conveying box 9, the sundries in the sewage will stay in the retention mechanism at the lower end of the sewage conveying box 9 under the action of gravity.

[0048] The retention mechanism includes an arc-shaped retention box 94 fixed at the lower end of the sewage conveying box 9 and an impurity temporary storage box 96 fixed on the inner wall of the arc-shaped retention box 94. An impurity inlet 97 is provided at the upper right part of the impurity temporary storage box 96, and a protective door 95 located below the impurity temporary storage box 96 is detachably installed at the bottom of the arc-shaped retention box 94.

[0049] As Figure 7 shown, the motor 91 drives the driving roller 93 to rotate, so that the conveyor belt 101 connected between the driving roller 93 and the driven roller 102 rotates synchronously, enabling the sewage at the bottom of the sewage conveying box 9 to enter the sewage conveying box 9 under the action of the L-shaped water scraping plate 103 made of rubber material on the conveyor belt 101.

[0050] After the sewage enters the arc-shaped retention box 94, the sundries mixed in the sewage will fall downward under the action of gravity and enter the impurity temporary storage box 96 through the impurity inlet 97. When the equipment stops or is in operation, after opening the protective door 95, the sundries in the impurity temporary storage box 96 can be taken out.

[0051] Since the conveyor belt 101 passes through the arc-shaped retention box 94, when the conveyor belt 101 rotates, the L-shaped water scraping plate 103 on the conveyor belt 101 introduces the sewage into the arc-shaped retention box 94 and makes the sewage flow upward along the arc-shaped retention box 94 and finally enter the chemical dosing channel 1003.

[0052] When sewage is introduced into the arc-shaped retention box 94, due to the setting of the impurity temporary storage box 96, the water flow velocity at the impurity inlet 97 on the upper right side of the impurity temporary storage box 96 is small. Therefore, the water flow at the impurity inlet 97 will not carry sundries upward into the chemical addition channel 1003, enabling the sundries mixed in the sewage to fall downward under the action of gravity and enter the impurity temporary storage box 96 through the impurity inlet 97;

[0053] And because the water flow velocity at the impurity inlet 97 is small, therefore, after the protective door 95 is opened, a small amount of sewage will enter the impurity temporary storage box 96 to flush out the sundries in the impurity temporary storage box 96, and the sewage will not enter the impurity temporary storage box 96 in large quantities, resulting in the situation that the protective door 95 cannot be closed.

[0054] Inside the rear end of the treatment tank 1, there is a receiving cavity 1004 for accommodating the intermediate filter drum 8, and filter holes 81 are evenly distributed on the surface of the intermediate filter drum 8.

[0055] The inner diameter of the receiving cavity 1004 is larger than the inner diameter of the chemical addition channel 1003, and at the front end of the receiving cavity 1004, there is an annular groove 1002 for inserting the front end of the intermediate filter drum 8.

[0056] Inside the intermediate filter drum 8, there is a mechanical stirring mechanism 5. The mechanical stirring mechanism 5 includes an intermediate rotating shaft 51 with stirring rods 53 and spiral blades 55 located outside the intermediate rotating shaft 51, and the rear end of the intermediate rotating shaft 51 is fixed to the inner wall of the middle rear end of the intermediate filter drum 8;

[0057] At the inner rear end of the intermediate filter drum 8, there is an annular disk 7. A side rotating shaft 56 is fixedly penetrated through the middle of the spiral blade 55, and the rear end of the side rotating shaft 56 is inserted into the corresponding shaft hole on the annular disk 7; the rear end of the intermediate rotating shaft 51 extends out through the middle hole 71 in the middle of the annular disk 7 and is fixed to the inner wall of the rear end of the intermediate filter drum 8.

[0058] In this way, when the intermediate gear 31 drives the side gear 33 to rotate, causing the intermediate rotating shaft 51 to drive the intermediate filter drum 8 to rotate, the side rotating shaft 56 also drives the spiral blade 55 to rotate inside the intermediate filter drum 8. At this time, the annular disk 7 rotates inside the intermediate filter drum 8 relative to the intermediate filter drum 8. The setting of the annular disk 7 plays a supporting role for the side rotating shaft 56, thereby making the rotation of the spiral blade 55 smooth;

[0059] An impeller 6 located in the chemical addition channel 1003 is fixed on the intermediate rotating shaft 51;

[0060] The motor 91 drives the intermediate rotating shaft 51 and the spiral blade 55 to rotate through the driving mechanism 3 at the front end of the treatment tank 1. The intermediate rotating shaft 51 drives the intermediate filter drum 8 and the impeller 6 to rotate. When sewage and medicine enter the chemical addition channel 1003, the impeller 6 rotates to mix the sewage and the medicine and then transports them into the intermediate filter drum 8. Subsequently, the sewage is transported into the intermediate filter drum 8. After being filtered by the intermediate filter drum 8, the sewage enters the accommodation cavity 1004;

[0061] An aeration mechanism 4 is installed at the front end of the treatment tank 1. The intermediate rotating shaft 51 also drives the fan blade 48 in the aeration mechanism 4 to rotate. Part of the air is introduced into the intermediate filter drum 8 through the inner cavity of the intermediate rotating shaft 51, and the other part of the air is introduced into the accommodation cavity 1004 through the air duct 44 to realize the aeration operation of the sewage.

[0062] The stirring rod 53 on the intermediate rotating shaft 51 is located inside the intermediate filter drum 8. The surface of the intermediate rotating shaft 51 is provided with a first spray hole 52 communicating with the inner cavity inside the intermediate rotating shaft 51;

[0063] The driving mechanism 3 includes an intermediate gear 31 and a first pulley 32 fixedly connected after the front end of the intermediate rotating shaft 51 penetrates and extends out of the treatment tank 1, and a side gear 33 fixed after the front end of the side rotating shaft 56 penetrates and extends out of the treatment tank 1;

[0064] The side gear 33 meshes with the side of the intermediate gear 31. A connecting shaft is fixed at the front end of the driving roller 93. The front end of the connecting shaft extends out of the sewage delivery box 9 and is fixedly connected with a second pulley 92. A belt 34 is connected between the first pulley 32 and the second pulley 92.

[0065] The motor 91 drives the driving roller 93 and the second pulley 92 to rotate. The second pulley 92 drives the first pulley 32 to rotate through the belt 34, so that the intermediate gear 31, the intermediate rotating shaft 51, and the air collecting horn pipe 46 and the fan blade 48 fixed at the front end of the intermediate rotating shaft 51 rotate together;

[0066] At this time, the intermediate gear 31 drives the side rotating shaft 56 and the spiral blade 55 to rotate through the side gear 33. The stirring rod 53 on the intermediate rotating shaft 51 rotates inside the intermediate filter drum 8, so as to realize the re-stirring of the sewage and the medicine entering the intermediate filter drum 8;

[0067] At the same time, the rotation directions of the multiple groups of spiral blades 55 are the same. Therefore, when the multiple groups of spiral blades 55 rotate synchronously, they can also push the sewage in the intermediate filter drum 8 from front to back, so that the sewage in the accommodation cavity 1004 of the treatment tank 1 forms a flow from front to back. Thus, after the sewage passes through the filter holes 81 and enters the accommodation cavity 1004, it can flow along the sewage flow into the drain pipe 2, and then be discharged from the drain pipe 2 for subsequent further treatment of the sewage;

[0068] The aeration mechanism 4 includes an air collecting cylinder 41 fixed to the front end of the treatment tank 1. Inside the air collecting cylinder 41, two cavities 42 distributed front and back are formed by an intermediate partition plate. The front end of the intermediate rotating shaft 51 penetrates through the intermediate partition plate and is connected with an air collecting horn pipe 46. The rear end of the air collecting horn pipe 46 is communicated with the inner cavity of the intermediate rotating shaft 51 through an opening 54 at the front end of the intermediate rotating shaft 51;

[0069] A connecting frame 47 is installed on the inner wall of the air collecting horn pipe 46, and the front end of the connecting frame 47 is fixed to the middle part of the rear end of the fan blade 48;

[0070] The front end of the air guide pipe 44 is fixed to the intermediate partition plate, and the horn-shaped air inlet 441 on the intermediate partition plate is communicated with the air guide pipe 44. The rear end of the air guide pipe 44 extends into the inner wall of the accommodation cavity 1004, and a second spray hole 45 is provided on the part of the air guide pipe 44 protruding from the inner wall of the accommodation cavity 1004.

[0071] A protective net 49 is also provided at the front end of the air collecting cylinder 41. Through the setting of the protective net 49, it plays a role in protecting the fan blade 48 during high-speed rotation, improving safety. A slot 43 for the belt 34 to extend out is also provided on the side of the air collecting cylinder 41.

[0072] During the rotation of the fan blade 48, a negative pressure is formed in the cavity 42 at the front of the air collecting cylinder 41. In this way, the outside air can enter the cavity 42 at the front of the air collecting cylinder 41 through the protective net 49, and a part of the air enters the inner cavity of the intermediate rotating shaft 51 through the air collecting horn pipe 46 and the opening 54, and finally is sprayed out through the first spray hole 52. While being used for aerating the sewage in the intermediate filter drum 8, it can also increase the flow of the sewage in the intermediate filter drum 8 to realize the stirring of the sewage and the medicine in the intermediate filter drum 8;

[0073] Another part of the air enters the air guide pipe 44 through the horn-shaped air inlet 441 and is finally sprayed out through the second spray hole 45. While being used for aerating the sewage filtered through the filter holes 81 and entering the accommodation cavity 1004, it can also increase the flow of the sewage in the accommodation cavity 1004 to realize the stirring of the sewage and the medicine in the accommodation cavity 1004.

[0074] In this way, the sewage is aerated simultaneously from the middle and the middle side of the treatment tank 1, which can also improve the aeration effect.

[0075] Specifically, during use, the bottom of the sewage conveying box 9 is inserted into the sewage. Then, the motor 91 is started to drive the driving roller 93 to rotate, so that the conveyor belt 101 connected between the driving roller 93 and the driven roller 102 rotates synchronously. As a result, the sewage at the bottom of the sewage conveying box 9 can enter the sewage conveying box 9 under the action of the L-shaped water scraping plate 103 made of rubber material on the conveyor belt 101, and the sewage flows upward along the arc-shaped retention box 94 and finally enters the chemical dosing channel 1003;

[0076] When the sewage enters the arc-shaped retention box 94, the sundries mixed in the sewage will fall downward under the action of gravity and enter the impurity temporary storage box 96 through the impurity inlet 97. During equipment shutdown or operation, after opening the protective door 95, the sundries in the impurity temporary storage box 96 can be taken out;

[0077] Since the conveyor belt 101 passes through the arc-shaped retention box 94, when the conveyor belt 101 rotates, the L-shaped water scraping plate 103 on the conveyor belt 101 introduces the sewage into the arc-shaped retention box 94, and the sewage flows upward along the arc-shaped retention box 94 and finally enters the chemical dosing channel 1003;

[0078] At the same time, the driving roller 93 drives the second pulley 92 to rotate, and the second pulley 92 drives the first pulley 32 to rotate through the belt 34, so that the intermediate gear 31, the intermediate rotating shaft 51, the impeller 6 fixed on the intermediate rotating shaft 51, the air collecting horn pipe 46 and the fan blade 48 fixed at the front end of the intermediate rotating shaft 51 rotate together;

[0079] At this time, the intermediate gear 31 drives the side rotating shaft 56 and the spiral blade 55 to rotate through the side gear 33, and the stirring rod 53 on the intermediate rotating shaft 51 rotates in the intermediate filter drum 8;

[0080] When the sewage enters the chemical dosing channel 1003, the sewage treatment drugs input through the dosing hopper 1001 enter the chemical dosing channel 1003. The impeller 6 rotates to mix the sewage and the drugs and then conveys them into the intermediate filter drum 8, and then conveys the sewage into the intermediate filter drum 8;

[0081] The stirring rod 53 on the intermediate rotating shaft 51 rotates in the middle of the intermediate filter drum 8, and multiple groups of spiral blades 55 also rotate synchronously on the inner side of the intermediate filter drum 8, jointly realizing the stirring of the sewage and the drugs in the intermediate filter drum 8;

[0082] Meanwhile, during the rotation of the fan blade 48, a negative pressure is formed in the cavity 42 at the front of the air collecting cylinder 41. In this way, the outside air can enter the cavity 42 at the front of the air collecting cylinder 41 through the protective net 49, and a part of the air is ejected through the first spray hole 52. While aerating the sewage in the intermediate filter drum 8, it can also increase the flow of the sewage in the intermediate filter drum 8 to achieve the stirring of the sewage and the drug in the intermediate filter drum 8;

[0083] Another part of the air enters the air guide pipe 44 through the horn-shaped air inlet 441 and is finally ejected through the second spray hole 45. While aerating the sewage that has passed through the filter holes 81 and entered the accommodation cavity 1004, it can also increase the flow of the sewage in the accommodation cavity 1004 to achieve the stirring of the sewage and the drug in the accommodation cavity 1004.

[0084] The rotation of multiple groups of spiral blades 55 can also play a role in pushing the sewage in the intermediate filter drum 8 from front to back, causing the sewage in the accommodation cavity 1004 of the treatment tank 1 to flow from front to back. Thus, after the sewage has passed through the filter holes 81 and entered the accommodation cavity 1004, it can flow into the drain pipe 2 along the sewage flow and then be discharged from the drain pipe 2 for subsequent further treatment of the sewage.

[0085] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sewage treatment device for water conservancy construction, comprising a treatment tank, characterized in that: A sewage conveying box is provided at the front side of the treatment tank, and a conveying mechanism driven by a motor is provided inside the sewage conveying box, and the conveying mechanism is used to convey sewage to the dosing channel inside the treatment tank, and a dosing hopper is provided at the upper end of the front of the treatment tank for adding medicine into the dosing channel; When the sewage is transported upward along the sewage transport box, the debris in the sewage will be retained in the retention mechanism at the lower end of the sewage transport box under the action of gravity; The rear end of the treatment tank is provided with a receiving cavity for receiving the intermediate filter drum, and the intermediate filter drum is provided with a mechanical stirring mechanism, which includes an intermediate rotating shaft with a stirring rod and a spiral blade located outside the intermediate rotating shaft, and the rear end of the intermediate rotating shaft is fixed to the inner wall of the rear end of the middle part of the intermediate filter drum, and an impeller located in the dosing channel is fixed on the intermediate rotating shaft; The motor drives the intermediate rotating shaft and the spiral blade to rotate through the driving mechanism at the front end of the treatment tank, and the intermediate rotating shaft drives the intermediate filter drum and the impeller to rotate. When sewage and drugs enter the drug adding channel, the impeller rotates to mix the sewage and drugs and then transport them to the intermediate filter drum. The sewage is filtered by the intermediate filter drum and then enters the accommodating chamber. An aeration mechanism is installed at the front end of the treatment tank, and the intermediate rotating shaft also drives the fan blades in the aeration mechanism to rotate, so that part of the air is introduced into the intermediate filter drum through the inner cavity of the intermediate rotating shaft, and the other part of the air is introduced into the accommodating cavity through the air guide pipe to realize the aeration operation of the sewage; The retention mechanism includes an arc-shaped retention box fixed at the lower end of the sewage transport box and an impurity temporary storage box fixed on the inner wall of the arc-shaped retention box, an impurity entry port is provided at the upper right part of the impurity temporary storage box, and a protective door located below the impurity temporary storage box is detachably installed at the bottom of the arc-shaped retention box; The motor is fixed to the upper side of the sewage conveying box; The conveying mechanism includes a driving roller and a driven roller installed at both ends of the sewage conveying box, a conveying belt connected between the driving roller and the driven roller, two rows of L-shaped scrapers arranged on the outer wall of the conveying belt, a supporting wheel installed at the connection between the arc retention box and the sewage conveying box through a bracket, and a tensioning roller movably connected to the inside of the arc retention box; The output end of the motor is connected to the driving roller, the supporting wheel is supported at the middle position of the outer side wall of the conveyor belt, and the tensioning roller is supported on the lower inner wall of the conveyor belt.

2. A sewage treatment device for water conservancy construction according to claim 1, characterized in that: The inner diameter of the accommodating cavity is larger than the inner diameter of the drug adding channel, and an annular groove for inserting the front end of the middle filter drum is provided at the front end of the accommodating cavity.

3. A sewage treatment device for water conservancy construction according to claim 1, characterized in that: The surface of the intermediate filter drum is also evenly distributed with filter holes.

4. A sewage treatment device for water conservancy construction according to claim 1, characterized in that: The inner rear end of the intermediate filter drum is provided with an annular disk, the middle of the spiral blade is penetrated and fixed with a side rotating shaft, and the rear end of the side rotating shaft is inserted into the corresponding shaft hole on the annular disk; The rear end of the intermediate rotating shaft extends out through the middle hole in the middle of the annular disk and is then fixed on the rear end inner wall of the intermediate filtering drum.

5. A sewage treatment device for water conservancy construction according to claim 4, characterized in that: The stirring rod on the intermediate rotating shaft is located in the intermediate filter drum, and the surface of the intermediate rotating shaft is provided with a first spray hole connected to the inner cavity inside the intermediate rotating shaft; The driving mechanism includes an intermediate gear and a first pulley, the front end of the intermediate rotating shaft extending through the processing tank and then being fixedly connected, and a side gear, the front end of the side rotating shaft extending through the processing tank and then being fixed; The side gear is meshed with the side of the middle gear, the front end of the active roller is fixed with a connecting shaft, the front end of the connecting shaft extends out of the sewage conveying box and is fixedly connected to a second pulley, and a belt is connected between the first pulley and the second pulley.

6. A sewage treatment device for water conservancy construction according to claim 5, characterized in that: The aeration mechanism includes a gas collecting cylinder fixed at the front end of the treatment tank, wherein two cavities distributed front and back are formed inside the gas collecting cylinder through a middle partition, and a gas collecting trumpet is connected to the front end of the middle rotating shaft after passing through the middle partition, and the rear end of the gas collecting trumpet is connected to the inner cavity inside the middle rotating shaft through an opening at the front end of the middle rotating shaft; A connecting frame is installed on the inner wall of the air collecting bell tube, and the front end of the connecting frame is fixed to the middle part of the rear end of the fan blade; The front end of the air duct is fixed to the middle partition, and the horn air inlet on the middle partition is connected to the air duct. The rear end of the air duct extends into the inner wall of the accommodating cavity, and a second spray hole is provided on the part of the air duct surface protruding from the inner wall of the accommodating cavity.

7. A sewage treatment device for water conservancy construction according to claim 6, characterized in that: The front end of the gas collecting cylinder is also provided with a protective net, and the side of the gas collecting cylinder is also provided with a slot for extending a belt.

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