Sewage treatment equipment

Abstract

The invention relates to the technical field of sewage treatment, in particular to sewage treatment equipment which comprises a shell, a fixed tank and a movable tank are arranged in the shell, a rotating rod is arranged in the fixed tank in a penetrating mode, a lifting rod is slidably connected to the outer portion of the rotating rod, a driving rod is arranged on the movable tank in a penetrating mode, and the outer portion of the driving rod is in threaded connection with a movable block rotationally connected to the lifting rod. A positioning sleeve for limiting rotation of the movable block is arranged outside the movable block, outer sleeve rods are rotationally connected to the exteriors of the positioning sleeve and the lifting rod, a plurality of stirring paddles are arranged on the outer sleeve rods, rotating plates are symmetrically arranged on the side, close to the movable block, of the lifting rod, a lifting plate is slidably arranged on the fixed tank, and a matching cavity is formed in the lifting plate; and a matching hole matched with the rotating plate is formed in the lifting plate at the matching cavity, and a plurality of through holes for liquid to penetrate through are formed in the lifting plate. Therefore, a proper mixing mode can be selected according to the liquid level height of the liquid, and the service life of the stirring paddle is prolonged on the premise of ensuring the mixing effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, and particularly relates to a sewage treatment equipment. BACKGROUND

[0002] The sewage treatment equipment is an industrial equipment capable of effectively treating municipal domestic sewage, industrial wastewater and the like.

[0003] At present, the existing sewage treatment equipment, such as the Chinese patent with the publication number CN109704482A, discloses a high-efficiency municipal sewage treatment device, which comprises a sedimentation tank and a purification tank. The bottom of the side far from the connecting pipe of the purification tank is provided with a drain port. The top end of the side of the purification tank is provided with a dosing port. The top end of the side of the purification tank is fixedly provided with a motor two. The two sides of the rotating shaft two are fixedly provided with a plurality of stirring blades one in a staggered manner. The bottom end of the rotating shaft two is fixedly provided with a connecting sleeve. The bottom end of the side of the connecting sleeve is fixedly provided with a connecting rod four. The bottom end of the connecting rod four is movably connected with one end of the connecting rod one. The top end of the side far from the connecting rod one of the connecting rod four is fixedly provided with a lifting rod. The top end of the lifting rod is fixedly provided with a fixing sleeve. The two sides of the fixing sleeve are fixedly provided with stirring blades two. The stirring blades one and the stirring blades two in the purification tank can make the medicine fully react with the sewage, thereby improving the purification efficiency. However, in actual use, the power consumption of the motor may be increased by 30% to 50% with each additional layer of paddle on the same stirring rod (since the fluid shear resistance between the paddles needs to be overcome), and the vortex generated by the lower paddle is dispersed by the upper paddle, resulting in about 30% to 40% of the energy being dissipated in invalid turbulence. The multiple paddles complicate the resonance frequency and easily cause transverse vibration in the critical speed area (such as 800-1200 rpm), and the shaft swing amplitude can reach about twice that of a single layer of paddle. Not only the stirring effect is poor, but also the service life is low.

[0004] How to select a suitable mixing mode according to the liquid level of the liquid to prolong the service life of the stirring paddle under the premise of ensuring the mixing effect has become a technical problem to be solved.

[0005] In summary, the prior art has obvious inconvenience and defects in actual use, and therefore needs to be improved. SUMMARY

[0006] In view of the above defects, the purpose of the present application is to provide a sewage treatment equipment which can select a suitable mixing mode according to the liquid level of the liquid to prolong the service life of the stirring paddle under the premise of ensuring the mixing effect.

[0007] In order to achieve the above purpose, the present application provides a sewage treatment equipment, which comprises an outer shell. The inner part of the outer shell is provided with a fixed tank and a liftable movable tank elastically connected to the outer shell.

[0008] The fixed tank is provided with a rotatable rotating rod, the outer portion of the rotating rod is slidably connected with a lifting rod, the movable tank is provided with a rotatable driving rod, the outer portion of the driving rod is threadedly connected with a movable block rotatably connected with the lifting rod, the outer portion of the movable block is provided with a positioning sleeve limiting the rotation of the movable block, the positioning sleeve and the outer portion of the lifting rod are rotatably connected with a sleeve rod, a plurality of stirring paddles are arranged on the sleeve rod, the side of the lifting rod close to the movable block is symmetrically provided with a rotating plate, the fixed tank is slidably provided with a lifting plate, the lifting plate is provided with a matching cavity, the lifting plate at the matching cavity is provided with a matching hole matched with the rotating plate, and a plurality of through holes for penetrating liquid are arranged on the lifting plate.

[0009] When the rotating plate passes through the matching hole and enters the matching cavity, the lifting rod is rotated, the lifting rod drives the rotating plate to rotate, the rotating plate is in the matching cavity, and at this time, the driving rod is rotated, the lifting plate will be lifted and lowered with the movable block.

[0010] According to the sewage treatment equipment, the movable tank and the shell are provided with a plurality of elastic rods, when the volume of the liquid in the movable tank continuously increases, the movable tank is lowered to press the plurality of elastic rods, and when the volume of the liquid in the movable tank continuously decreases, the movable tank is reset.

[0011] According to the sewage treatment equipment, the elastic rod comprises an outer rod connected to the inner bottom wall of the shell, the inner portion of the outer rod is provided with a positioning cylinder, and the inner portion of the outer rod is elastically connected with an inner rod connected to the movable tank.

[0012] According to the sewage treatment equipment, one end of the inner rod is inserted into the inner portion of the outer rod, the inner portion of the outer rod is symmetrically provided with a sliding block, the inner portion of the outer rod is provided with a sliding groove matched with the sliding block, the sliding block is slidably arranged in the sliding groove, the inner portion of the inner rod is provided with a positioning column, one end of the positioning column close to the positioning cylinder is inserted into the positioning cylinder, and an elastic member is arranged between the positioning cylinder and the positioning column.

[0013] According to the sewage treatment equipment, the movable block and the sleeve rod are provided with a sealing ring.

[0014] According to the sewage treatment equipment, the movable block is a cuboid structure, and the inner wall of the positioning sleeve is matched with the outer wall of the movable block.

[0015] According to the sewage treatment equipment, the end of the fixed tank away from the movable tank and the end of the movable tank away from the fixed tank are provided with a gear box, one end of the positioning cylinder away from the lifting rod penetrates the movable tank and is connected to the inner portion of the gear box, one end of the rotating rod, the sleeve rod and the driving rod close to the gear box penetrates the gear box, the outer portion of the sleeve rod in the inner portion of the gear box is sleeved with a driven gear, and the driven gear is engaged with a rotatable driving gear.

[0016] According to the wastewater treatment equipment of the present invention, the inner wall of the lifting rod is symmetrically provided with protrusions, and the rotating rod is provided with grooves that cooperate with the protrusions, and the protrusions are all slidably disposed in the grooves.

[0017] According to the wastewater treatment equipment of the present invention, the end of the drive rod near the lifting rod is inserted into the lifting rod, and the lifting rod is provided with a clearance space for accommodating the drive rod.

[0018] According to the wastewater treatment equipment of the present invention, a plurality of support legs are provided at one end of the outer shell near the ground.

[0019] The purpose of this invention is to provide a wastewater treatment device, including a fixed tank and a movable tank. It can select a suitable mixing method based on the liquid level in both the fixed and movable tanks, avoiding the simultaneous operation of multiple agitators on a single rod, and extending the service life of the agitators while ensuring effective mixing. The elastic rod includes an outer rod connected to the bottom wall of the outer casing, with a positioning cylinder inside. Each outer rod is elastically connected to an inner rod connected to the movable tank, increasing the strength between the outer rod, the elastic element, and the inner rod, and improving the stability of the movable tank's movement. A lifting plate is slidably mounted on the fixed tank. When the rotating plate passes through the mating hole and enters the mating cavity, rotating the lifting rod causes the rotating plate to engage within the mating cavity. Rotating the drive rod causes the lifting plate to move up and down with the movable block, using the lifting plate to disperse and mix the liquids in the fixed and movable tanks, creating turbulence and establishing contact between the liquid in the middle and the liquids above and below, thus improving the mixing effect. In summary, the beneficial effects of this invention are: it can select a suitable mixing method based on the liquid level, extending the service life of the agitators while ensuring effective mixing. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the present invention;

[0021] Figure 2 This is a structural diagram of the fixed tank location;

[0022] Figure 3 This is a structural diagram of the rotating plate.

[0023] Figure 4 To match the structural diagram of the cavity;

[0024] Figure 5 This is a cross-sectional view of the rotating rod.

[0025] Figure 6 This is a cross-sectional view of the drive rod.

[0026] Figure 7 This is a cross-sectional view of the elastic rod.

[0027] In the diagram: 1-Outer shell, 11-Sight mirror, 12-Manhole, 13-Support leg, 14-Feed pipe, 15-Elastic rod, 151-Outer rod, 152-Positioning cylinder, 153-Inner rod, 154-Positioning column, 16-Discharge pipe, 2-Fixed tank, 21-Rotating rod, 22-Lifting rod, 221-Rotating plate, 3-Moving tank, 31-Drive rod, 32-Moving block, 33-Positioning sleeve, 34-Sealing ring, 4-Lifting plate, 41-Protrusion, 42-Matching cavity, 43-Matching hole, 44-Through hole, 5-Outer rod, 51-Agitator, 6-Gearbox, 61-First driving component, 62-Second driving component, 621-Drive gear, 63-Driven gear, 7-Elastic component. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0031] See Figure 1 , Figure 2 and Figure 6This invention provides a wastewater treatment device, including a housing 1. Inside the housing 1 are a fixed tank 2 and a movable tank 3. The fixed tank 2 is fixedly connected to the inside of the housing 1. The movable tank 3 is inserted into the fixed tank 2 at one end near the fixed tank 2, and the fixed tank 2 and the movable tank 3 are slidably sealed. The movable tank 3 is elastically connected to the housing 1 (a plurality of elastic rods 15 are provided between the movable tank 3 and the housing 1). When the movable tank 3 moves up and down inside the housing 1, the elastic rods 15 can provide support for the movable tank 3. When the volume of liquid inside the movable tank 3 continuously increases, the movable tank 3 continuously increases under the gravity of the liquid inside, and the movable tank 3 descends and squeezes the plurality of elastic rods 15. When the volume of liquid inside the movable tank 3 continuously decreases, the movable tank 3 continuously decreases under the gravity of the liquid inside, and under the action of the plurality of elastic rods 15, the movable tank 3 returns to its initial position. Thus, depending on the amount of liquid being treated inside the fixed tank 2 and the movable tank 3, the movable tank 3 is in different positions inside the housing 1 to facilitate the use of different stirring and mixing methods, thereby reducing energy consumption while ensuring the mixing effect.

[0032] See Figure 2 and Figure 7 Furthermore, the elastic rod 15 includes an outer rod 151 connected to the inner bottom wall of the outer casing 1. The outer rod 151 has a positioning cylinder 152 inside. Each outer rod 151 is elastically connected to an inner rod 153 connected to the movable tank 3 (one end of the inner rod 153 is inserted into the outer rod 151). Sliding blocks are symmetrically arranged on the inner rods 153 inside the outer rod 151. The outer rod 151 has a sliding groove that cooperates with the sliding blocks, and the sliding blocks are slidably disposed within the sliding groove. Each inner rod 153 has a positioning post 154 inside, and the end of the positioning post 154 near the positioning cylinder 152 is inserted into... The inner rod 153 is inserted into the positioning cylinder 152, and elastic elements 7 are provided between the positioning cylinder 152 and the positioning post 154. In this way, the inner rod 153 can extend and retract on the outer rod 151, thereby increasing the strength between the outer rod 151, the elastic element 7 and the inner rod 153, and improving the stability of the movement of the movable tank 3. Since the maximum volume inside the fixed tank 2 and the movable tank 3 is not large, the outer rod 151, the elastic element 7 and the inner rod 153 can be matched with each other by selecting fixed tank 2 and movable tank 3 with different maximum volumes, which is sufficient to support and assist the movable tank 3 to complete the movement.

[0033] See Figure 1 , Figure 2 and Figure 6Specifically, the outer shell 1 also has the structures that should be set on a conventional reaction vessel, such as a sight glass 11, a feed pipe 14, a discharge pipe 16, and several manholes 12. These structures can reflect the internal state. The sight glass 11, feed pipe 14, and several manholes 12 all pass through the outer shell 1 and connect to the inside of the fixed tank 2. The manholes 12 are equipped with blind plates and other structures. The discharge pipe 16 passes through the outer shell 1 and connects to the inside of the movable tank 3. Since the movable tank 3 is movable inside the outer shell 1, the discharge pipe 16 should pass out from the bottom of the outer shell 1, and the discharge pipe 16 should be a telescopic pipe to discharge the liquid in the movable tank 3 without affecting the movement of the movable tank 3. Valves should be installed on both the feed pipe 14 and the discharge pipe 16. The above conventional structures are all mature existing technologies in this field and are conventional structures of reaction vessels. Their specific connection methods and working principles will not be described in detail here.

[0034] See Figure 1 Preferably, the outer casing 1 is provided with several support legs 13 at the end near the ground to lift the outer casing 1 a certain distance, which facilitates the installation of other structures (such as pipes and pumps).

[0035] See Figures 2 to 6 A rotatable rotating rod 21 is inserted inside the fixed tank 2. A lifting rod 22 is slidably connected to the outside of the rotating rod 21 (the inner wall of the lifting rod 22 is symmetrically provided with protrusions, and the rotating rod 21 is provided with grooves that cooperate with the protrusions, with the protrusions slidably disposed in the grooves). The lifting rod 22 can slide outside the rotating rod 21 and can rotate with the rotating rod 21 without detaching from the rotating rod 21. A rotatable drive rod 31 is inserted through the movable tank 3. The end of the drive rod 31 near the lifting rod 22 is inserted into the lifting rod 22 (the lifting rod 22 is provided with a mechanism to accommodate the drive rod 31). The drive rod 31 has an external threaded connection to a movable block 32. One end of the movable block 32 is rotatably connected to the lifting rod 22 (the movable block 32 and the lifting rod 22 are rotatably sealed). The movable block 32 is provided with a positioning sleeve 33 to prevent the movable block 32 from rotating. The positioning sleeve 33 will not rotate. The positioning sleeve 33 and the lifting rod 22 are both rotatably connected with an outer sleeve rod 5 (the outer sleeve rod 5 is rotatably sealed with the positioning sleeve 33 and the lifting rod 22). The outer sleeve rod 5 is provided with several stirring paddles 51. The stirring paddles 51 can be used to mix the liquid in this area.

[0036] See Figures 2 to 6 Preferably, a sealing ring 34 is provided between the movable block 32 and the outer sleeve 5 at the movable block 32. The sealing ring 34 rotates and seals between the outer sleeve 5 at the movable block 32 and the movable block 32. The sealing ring 34 can improve the sealing effect at the movable block 32 and the positioning sleeve 33, and prevent liquid inside the movable tank 3 from entering between the movable block 32, the positioning sleeve 33 and the outer sleeve 5 at the movable block 32.

[0037] SeeFigures 2 to 6 Specifically, the movable block 32 has a cuboid structure, and the inner wall of the positioning sleeve 33 fits against the outer wall of the movable block 32. Since the positioning sleeve 33 does not rotate, the movable block 32 also cannot rotate. When the drive rod 31 is rotated, the movable block 32 can only move up and down on the drive rod 31.

[0038] See Figures 2 to 6 A rotating plate 221 is symmetrically arranged on the side of the lifting rod 22 near the movable block 32. A lifting plate 4 is slidably arranged on the fixed tank 2 (the lifting plate 4 is symmetrically provided with protrusions 41, and the inner wall of the fixed tank 2 is provided with a slide rail that mates with the protrusions 41, and the protrusions 41 are all slidably arranged in the slide rail). The lifting plate 4 is provided with a mating cavity 42, and the lifting plate 4 at the mating cavity 42 is provided with a mating hole 43 that mates with the rotating plate 221. The rotating plate 221 can pass through the mating hole 43 and enter the mating cavity 42. The lifting plate 4 is provided with several holes for penetration. Liquid passage 44; when the rotating plate 221 passes through the mating hole 43 and enters the mating cavity 42, the lifting rod 22 is rotated, and the lifting rod 22 drives the rotating plate 221 to rotate, so that the rotating plate 221 is stuck in the mating cavity 42. At this time, the drive rod 31 is rotated, and the lifting plate 4 will move up and down with the movable block 32. By using the up and down movement of the lifting plate 4, the liquid in the fixed tank 2 and the movable tank 3 is dispersed and mixed. The liquid continuously passes through the passage 44 for mixing and exchange, forming turbulence in the fixed tank 2 and the movable tank 3, thus improving the mixing effect.

[0039] See Figures 2 to 6 Specifically, gearboxes 6 are provided at both the end of the fixed tank 2 away from the movable tank 3 and the end of the movable tank 3 away from the fixed tank 2. The end of the positioning sleeve 33 away from the lifting rod 22 extends out of the movable tank 3 and connects to the inside of the gearbox 6 (see...). Figure 6 The gearbox 6 has a fixed platform inside, and the positioning sleeve 33 is connected to the fixed platform. The rotating rod 21, the outer sleeve rod 5, and the drive rod 31 near the gearbox 6 all pass into the gearbox 6. The rotating rod 21 and the drive rod 31 inside the gearbox 6 are both connected to the output shaft of the first drive member 61 (for example, through a coupling). The first drive member 61 is connected to the inner wall of the gearbox 6. The first drive member 61 can drive the rotating rod 21 or the drive rod 31 to rotate. The outer sleeve rod 5 inside the gearbox 6 is fitted with a driven gear 63. The driven gear 63 meshes with a rotatable drive gear 621. The drive gear 621 can drive the driven gear 63 to rotate. The drive gear 621 is connected to the output shaft of the second drive member 62. The second drive member 62 can drive the drive gear 621 to rotate. In this way, the first drive member 61 and the second drive member 62 can provide power to the rotating rod 21, the outer sleeve rod 5, and the drive rod 31.

[0040] See Figures 1 to 7 Preferably, the elastic element 7 is a spring, which provides return power.

[0041] See Figures 1 to 7 Preferably, both the first driving component 61 and the second driving component 62 are rotary motors that provide power to the device.

[0042] See Figures 1 to 7 Specifically, since the fixed tank 2 and the movable tank 3 contain liquid, all sliding connections between structures in the present invention that operate in a liquid environment should be subject to sliding sealing treatment, and rotating connections should be subject to rotating sealing treatment. For example, sealing elements such as sealing rings should be provided. This is a conventional method for waterproofing treatment that is known to those skilled in the art. The specific structure and working principle will not be described in detail here.

[0043] See Figures 1 to 7 In use, wastewater to be treated is introduced into the fixed tank 2 and the movable tank 3. The movable tank 3, under the influence of gravity of the internal liquid, continuously increases in size. As the movable tank 3 descends, it presses against several elastic rods 15, eventually stopping at a certain position. Then, treatment agent is added according to the amount of wastewater to be treated (i.e., the position where the movable tank 3 stops). Different mixing methods are selected depending on the situation.

[0044] If the liquid volume in the fixed tank 2 and the movable tank 3 is low (only about 30% of the total volume of the fixed tank 2 and the movable tank 3), and the rotating plate 221 has not yet passed through the mating hole 43 into the mating cavity 42, it is sufficient to open the outer sleeve rod 5 outside the positioning sleeve 33 to stir the liquid in the movable tank 3.

[0045] If the liquid volume in the fixed tank 2 and the movable tank 3 is moderate (accounting for about 60% of the total volume of the fixed tank 2 and the movable tank 3), when the outer sleeve rod 5 of the positioning sleeve 33 is opened, and the rotating plate 221 passes through the mating hole 43 and enters the mating cavity 42, the lifting rod 22 is rotated to make the rotating plate 221 lock in the mating cavity 42. The drive rod 31 is rotated to make the lifting plate 4 move up and down with the movable block 32. The lifting plate 4 is used to disperse and mix the liquid in the fixed tank 2 and the movable tank 3 to form turbulence. The outer sleeve rod 5 of the positioning sleeve 33 and the lifting plate 4 cooperate with each other to improve the mixing effect.

[0046] If the liquid volume in the fixed tank 2 and the movable tank 3 is large (accounting for more than 60% of the total volume of the fixed tank 2 and the movable tank 3), the positioning sleeve 33 and the outer sleeve rod 5 outside the lifting rod 22 are opened simultaneously. The lifting rod 22 is rotated so that the rotating plate 221 is locked in the mating cavity 42. The drive rod 31 is rotated so that the lifting plate 4 moves up and down with the movable block 32. The lifting plate 4 is used to disperse and mix the liquid in the fixed tank 2 and the movable tank 3 to form turbulence. With the help of the positioning sleeve 33 and the outer sleeve rod 5 outside the lifting rod 22, the liquid in the fixed tank 2 and the movable tank 3 are mixed.

[0047] This invention provides a wastewater treatment device, including a fixed tank and a movable tank. It can select a suitable mixing method based on the liquid level in both tanks, avoiding the simultaneous operation of multiple agitators on a single rod. This extends the lifespan of the agitators while ensuring effective mixing. The elastic rod includes an outer rod connected to the bottom wall of the outer casing, with a positioning cylinder inside. Each outer rod is elastically connected to an inner rod connected to the movable tank, increasing the strength between the outer rod, the elastic element, and the inner rod, and improving the stability of the movable tank's movement. A lifting plate slides on the fixed tank. When the rotating plate passes through the mating hole into the mating cavity, rotating the lifting rod causes the rotating plate to engage within the mating cavity. Rotating the drive rod causes the lifting plate to move up and down with the movable block. The lifting plate disperses and mixes the liquids in the fixed and movable tanks, creating turbulence and establishing contact between the liquids in the middle and those above and below, thus improving the mixing effect. In summary, the beneficial effects of this invention are: it can select a suitable mixing method based on the liquid level, extending the lifespan of the agitators while ensuring effective mixing.

[0048] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A wastewater treatment device, characterized in that, Includes an outer shell, inside which is a fixed tank and a movable tank that is elastically connected to the outer shell and can be raised or lowered; A rotatable rotating rod is inserted inside the fixed tank. A lifting rod is slidably connected to the outside of the rotating rod. A rotatable driving rod is inserted on the movable tank. A movable block is rotatably connected to the lifting rod via a threaded connection to the outside of the driving rod. A positioning sleeve is provided outside the movable block to restrict its rotation. An outer sleeve is rotatably connected to both the positioning sleeve and the lifting rod. Several stirring paddles are provided on the outer sleeve. A rotating plate is symmetrically provided on the side of the lifting rod near the movable block. A lifting plate is slidably provided on the fixed tank. The lifting plate has a mating cavity. A mating hole is provided on the lifting plate at the mating cavity to mate with the rotating plate. Several through holes are provided on the lifting plate for liquid to pass through. When the rotating plate passes through the mating hole and enters the mating cavity, the lifting rod is rotated, which drives the rotating plate to rotate, so that the rotating plate is in the mating cavity. At this time, the drive rod is rotated, and the lifting plate will move up and down with the movable block.

2. The wastewater treatment equipment according to claim 1, characterized in that, Several elastic rods are provided between the movable tank and the outer shell. When the volume of liquid in the movable tank continuously increases, the movable tank descends and squeezes the elastic rods. When the volume of liquid in the movable tank continuously decreases, the movable tank returns to its original position.

3. The wastewater treatment equipment according to claim 2, characterized in that, The elastic rod includes an outer rod connected to the bottom wall of the outer shell, and a positioning cylinder is provided inside the outer rod. An inner rod connected to the movable tank is elastically connected to the outer rod.

4. The wastewater treatment equipment according to claim 3, characterized in that, One end of the inner rod is inserted into the outer rod. Sliders are symmetrically arranged on the inner rod inside the outer rod. The outer rod has a sliding groove that cooperates with the slider. The sliders are all slidably arranged in the sliding groove. The inner rod has a positioning post inside. The end of the positioning post near the positioning cylinder is inserted into the positioning cylinder. An elastic element is provided between the positioning cylinder and the positioning post.

5. The wastewater treatment equipment according to claim 1, characterized in that, A sealing ring is provided between the movable block and the outer sleeve rod.

6. The wastewater treatment equipment according to claim 1, characterized in that, The movable block has a cuboid structure, and the inner wall of the positioning sleeve fits against the outer wall of the movable block.

7. The wastewater treatment equipment according to claim 3, characterized in that, Gearboxes are provided at the ends of the fixed tank and the movable tank away from the fixed tank. The end of the positioning cylinder away from the lifting rod passes through the movable tank and connects to the inside of the gearbox. The ends of the rotating rod, the outer sleeve rod, and the drive rod near the gearbox all pass into the gearbox. Driven gears are fitted on the outside of the outer sleeve rod inside the gearbox, and the driven gears mesh with rotatable drive gears.

8. The wastewater treatment equipment according to claim 1, characterized in that, The inner wall of the lifting rod is symmetrically provided with protrusions, and the rotating rod is provided with grooves that cooperate with the protrusions. The protrusions are all slidably disposed in the grooves.

9. The wastewater treatment equipment according to claim 1, characterized in that, The end of the drive rod near the lifting rod passes through the lifting rod, and the lifting rod has a clearance space to accommodate the drive rod.

10. The wastewater treatment equipment according to claim 1, characterized in that, The outer shell has several supporting legs at the end closest to the ground.

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