CN219887118U - Urban sewage overflow control device - Google Patents

Abstract

The utility model relates to an urban sewage overflow control device, which relates to the technical field of sewage overflow control and comprises a collecting tank, wherein a sewage treatment device is arranged on one side of the collecting tank, an overflow port is formed in the upper end of the collecting tank, an overflow pipe communicated with the sewage treatment device is arranged in the overflow port, a reflux component is arranged in the collecting tank, the collecting tank is used for collecting sewage overflowed by the sewage treatment device, and the reflux component is used for refluxing the sewage in the collecting tank into the sewage treatment device. The utility model is convenient to collect the overflowed sewage in the sewage treatment device by arranging the collecting tank, reduces the overflow condition of the sewage to the sewage treatment device and to the surrounding environment, reduces the pollution condition of the sewage to the water source, and has the advantage of convenient control of the overflow of the sewage.

Description

Urban sewage overflow control device

Technical Field

The utility model relates to the technical field of sewage overflow control, in particular to an urban sewage overflow control device.

Background

Urban sewage is mainly domestic sewage, industrial wastewater and runoff sewage in regional areas, is generally collected by urban pipelines and is discharged into water after being treated by urban sewage treatment plants. At present, most areas adopt a closure flow combined drainage system, the water quantity is smaller in sunny days, and the closure flow combined drainage system can be directly conveyed to a sewage treatment tank through a pipeline, but when the rainfall is larger, the discharged sewage exceeds the load of the sewage treatment tank to overflow, so that an anti-overflow sewage treatment device is needed to be adopted, and sewage is prevented from polluting a water source.

The utility model provides a sewage treatment plant with overflow prevention function that related art is disclosed like the authority bulletin number CN210905274U, including the box, the outer wall top surface fixed connection inlet channel of box, the outer wall one side fixed connection of box has the outlet conduit of stop valve, inlet channel and outlet conduit all with the inside intercommunication of box, box inner wall opposite side upper portion articulates and connects filter one side, the upper portion at the front and back of box inner wall is fixed mounting baffle respectively, the both sides of two baffles all with the contact cooperation of box inner wall both sides. The filter below articulates there is the fixed plate, and the mouth of changing is offered to box lateral wall one side lower part, and the opposite side of fixed plate is located the mouth of changing, and the standing groove is offered to the top surface of fixed plate, and penetrating water channel is offered to the bottom surface of standing groove, and the standing groove is equipped with one and can permeate water and be equipped with the box of placing of active carbon, and in sewage got into the box, carries out secondary filtration in the box was placed to the active carbon that flows into in the box downwards after the filter filtration treatment, and the sewage after the filtration is discharged from outlet conduit.

For the above related art, the inventors found that: when sewage is treated, impurities such as plastic products and domestic sundries are doped in the sewage, and the impurities can stay on the upper surface of the filter plate, so that the impurities block the filter plate, the water permeability of the filter plate is reduced, when the sewage quantity is overlarge, the rate of the sewage permeating the filter plate is slower, the sewage overflows the sewage treatment device, and overflowed water flows into a surrounding river to pollute a water source, so that the sewage overflow is inconvenient to control.

Disclosure of Invention

In order to facilitate the control of sewage overflow, the utility model aims to provide an urban sewage overflow control device.

The utility model provides an urban sewage overflow control device which adopts the following technical scheme:

the utility model provides an urban sewage overflow controlling means, includes the collecting vat, one side of collecting vat is equipped with sewage treatment plant, the overflow mouth has been seted up to the collecting vat upper end, be equipped with the intercommunication in the overflow mouth sewage treatment plant's overflow pipe, be equipped with the backward flow subassembly in the collecting vat, the collecting vat is used for collecting sewage that sewage treatment plant overflowed, the backward flow subassembly is used for with sewage backward flow in the collecting vat arrives in the sewage treatment plant.

By adopting the technical scheme, when sewage is treated, the sewage can directly enter the sewage treatment device, so that the sewage treatment device can purify the sewage. When the sewage quantity is great, a large amount of sewage can flow into in the sewage treatment plant for the sewage quantity surpasses the load that sewage treatment plant can bear, makes the sewage that overflows flow into the overflow pipe along the overflow mouth in, flows into the collecting vat along the overflow pipe again in, in order to reduce sewage and overflows sewage treatment plant and get into the circumstances in river course around, and then reduces the circumstances in sewage pollution river course. After the sewage is discharged, the collected sewage in the collecting tank is returned to the sewage treatment device along the overflow pipe through the return assembly, so that the sewage treatment device purifies the sewage, and the sewage stored in the collecting tank is conveniently treated. Through setting up the collecting vat to collect the sewage that overflows in the sewage treatment plant, reduce sewage and spill over to sewage treatment plant and overflow to the circumstances in the surrounding environment, reduce the circumstances of sewage pollution water source, thereby be convenient for control sewage overflow.

Optionally, the backward flow subassembly including set up in U template, set up in the collection pond upper end the booster pump, U template towards being close to the direction of collection pond diapire is crooked, the collection pond is kept away from the one end of overflow pipe has seted up the booster orifice, the booster pump stretches into in the booster orifice.

Through adopting above-mentioned technical scheme, when making sewage backward flow, start the booster pump, make booster pump increase collecting tank keep away from the pressure of sewage treatment plant one end for the sewage that sewage treatment plant one side was kept away from to the collecting tank receives the pressure to flow towards the direction that is close to the overflow pipe, so that sewage is kept away from sewage treatment's one end from the U template and is flowed to the other end of U template. The sewage flows into the sewage treatment device along the overflow pipe so that the sewage treatment device purifies the sewage. Through setting up the U template, make the U template divide into two parts with the collecting vat to make the booster pump increase the pressure that the collecting vat kept away from sewage treatment plant one side, make the both sides of collecting vat produce pressure differential, and then be convenient for impress the one side that the collecting vat is close to sewage treatment plant with sewage, thereby be convenient for make sewage backward flow.

Optionally, the collecting vat is close to the one end of booster pump slides has the butt board, the butt board is used for with the shutoff of booster orifice.

Through adopting above-mentioned technical scheme, when sewage inflow collecting vat, slide into the collecting vat with the butt board along the horizontal direction in, make butt board with the shutoff of pressure boost mouth. So as to reduce the condition that sewage flows into the pressurizing opening and permeates into the pressurizing pump along the pressurizing opening, and reduce the condition that sewage damages or corrodes the pressurizing pump, thereby being convenient for protecting the pressurizing pump.

Optionally, the U-shaped plate includes articulated in board one at collecting vat both ends, slide in have elastic board two in the board one, be equipped with the pull rod on the roof of board two, the both ends of collecting vat are equipped with have elastic dead lever, offer a plurality of confession on the circumference lateral wall of pull rod the inserted spliced groove of dead lever.

Through adopting above-mentioned technical scheme, when sewage volume is great, will be fixed lever pulling towards the direction of keeping away from the pull rod, the fixed lever tension warp to slide out the spliced groove with the fixed lever and resume deformation. And then the pull rod is pulled upwards, the pull rod drives the plate to slide upwards, and the plate II drives the plate to rotate upwards, so that the two ends of the plate II slide into the plate I. So that the first plate and the second plate move towards the direction far away from the collecting tank to enlarge the water storage space of the collecting tank, and then the fixing rod moves towards the direction close to the pull rod, wherein the fixing rod is inserted into the inserting groove to limit the pull rod to slide downwards, and further limit the first plate to slide downwards and rotate so as to fix the water storage space of the collecting tank after the collecting tank is enlarged. The sewage water level is reduced and reaches the higher condition of sewage back flow to sewage treatment plant along the overflow pipe in the both ends of U template, and the condition that overflows sewage treatment plant and flows into surrounding environment after reducing sewage backward flow to the sewage overflow is convenient for control. Through setting up board one and board two to the water storage space of adjustment collecting vat, and then the sewage that is convenient for overflow is stored in the collecting vat, thereby improves the effect of control sewage overflow.

Optionally, a water level precaution device is arranged on the bottom wall of the second plate.

By adopting the technical scheme, when overflowed sewage is collected, after the sewage level reaches the water level precaution device, the water level precaution device gives out an alarm to prompt technicians. After receiving the alarm, the technician rotates and pulls the fixing rod in a direction away from the pull rod, so that the tension force of the fixing rod is deformed, and the fixing rod slides out of the inserting groove and is recovered to deform. And then the pull rod is pulled upwards, the pull rod drives the plate to slide upwards, the plate II drives the plate to rotate upwards, and the plate II drives the water level precaution device to slide upwards at the same time so as to release the abutting state of sewage and the water level precaution device. The water storage space of the collecting tank is enlarged, then one end of the fixing rod, which is far away from the collecting tank, is inserted into the inserting groove to limit the pull rod to slide downwards, and further limit the plate to slide downwards, so that the size of the water storage space of the collecting tank is fixed by limiting the rotation of the plate. Reduce sewage flow to the both ends of U template, and then reduce the condition that sewage flows back to sewage treatment plant along the overflow pipe in. Through setting up the water level precaution device, make the water level precaution device send out the police dispatch newspaper to the accurate high of knowing the interior sewage water level of collecting vat reduces waiting for the condition of sewage backward flow to the interior height of readjusting board two of sewage treatment plant, thereby the water storage space of accurate adjustment collecting vat of being convenient for.

Optionally, the lower extreme of collecting vat is equipped with the sedimentation tank, the sedimentation tank with the collecting vat is linked together, the drain has been seted up to the lateral wall of sedimentation tank, it has the connecting plate to articulate on the lateral wall of sedimentation tank, the one end perpendicular to that the connecting plate stretches into the sedimentation tank is fixed with the closure plate, the length of closure plate is longer than the length of connecting plate, the connecting plate chucking in the sedimentation tank, be equipped with the restriction in the sedimentation tank connecting plate pivoted locking piece.

By adopting the technical scheme, when sewage flows into the collecting tank, part of impurities in the sewage can fall into the sedimentation tank downwards under the gravity. And after the sewage is discharged, the limit of the locking piece on the connecting plate is released, the connecting plate rotates towards the direction close to the collecting tank, and the connecting plate drives the blocking plate to rotate, so that one end of the blocking plate, which is far away from the connecting plate, is in sliding butt joint with the inner wall of the collecting tank, and the sedimentation tank is blocked. The connecting plate is rotated into the sewage outlet and clamped in the sedimentation tank by friction force so as to seal the sewage outlet and limit sewage from being discharged from the sewage outlet. The blocking plate is used for blocking impurities in the sedimentation tank, so that the sewage is reduced to drive the impurities to flow back into the treatment tank when the sewage flows back, and the sewage in the collection tank is filtered conveniently.

Optionally, the locking piece include slide in locking lever in the sedimentation tank, be fixed in the locking piece of dead lever upper end, the sedimentation tank is close to one side of connecting plate has been seted up and has been supplied the spout that the locking lever slided, set up on the spout cell wall a plurality of confession the locking groove that the locking piece level slided in, the locking lever support tightly in on the roof of connecting plate.

Through adopting above-mentioned technical scheme, when collecting the sewage of overflow, rotate the connecting plate towards the direction of keeping away from the collecting vat, the connecting plate drives the closure plate and rotates towards the direction of keeping away from the collecting vat, makes closure plate butt on the inner wall of collecting vat to with drain shutoff. And then sliding the locking block along the horizontal direction to enable the locking block to slide out of the locking groove. Then the locking block slides downwards, and the locking block drives the locking rod to slide downwards, so that the lower end of the locking rod is abutted against the top wall of the connecting plate to limit the rotation of the connecting plate, and further limit the movement of the blocking plate, so that the blocking plate is fixed in a state of being abutted against the inner wall of the collecting tank. Then slide the locking piece along the horizontal direction into the locking groove to with the locking lever support the state fixed on the connecting plate, the restriction locking lever slides, so that fixed connecting plate, thereby be convenient for shutoff drain.

Optionally, a plurality of water holes are formed in the blocking plate.

Through adopting above-mentioned technical scheme, when sewage backward flow, start the booster pump, the booster pump makes the U template keep away from the pressure increase of sewage treatment plant one end, makes sewage flow to the one end that the U template is close to sewage treatment plant, and sewage in the sedimentation tank flows the sedimentation tank along the limbers upwards under pressure. The sewage in the sedimentation tank and the sewage in the collecting tank are enabled to flow back to the sewage treatment device so as to treat the sewage in the sedimentation tank, impurities in the sedimentation tank are stored in the sedimentation tank, the condition that the sewage drives the impurities to flow back together is reduced, and therefore the sewage in the sedimentation tank is convenient to flow back.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the collecting tank is arranged so as to collect overflowed sewage in the sewage treatment device, reduce the overflow of the sewage to the sewage treatment device and the overflow to the surrounding environment, and reduce the pollution of the sewage to a water source, thereby being convenient for controlling the overflow of the sewage;

2. by arranging the U-shaped plate, the U-shaped plate divides the collecting tank into two parts, so that the booster pump can increase the pressure intensity of one side of the collecting tank far away from the sewage treatment device, and the pressure difference is generated on the two sides of the collecting tank, so that sewage is conveniently pressed into one side of the collecting tank close to the sewage treatment device, and sewage is conveniently caused to flow back;

3. the first plate and the second plate are arranged so as to adjust the water storage space of the collecting tank, and further facilitate the overflowed sewage to be stored in the collecting tank, thereby improving the effect of controlling the overflow of the sewage;

4. through setting up the sedimentation tank, make impurity in the sewage subside in the sedimentation tank, make the closure plate with impurity shutoff in the sedimentation tank to be convenient for filter the sewage in the collecting vat.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model.

FIG. 2 is a schematic cross-sectional view of an embodiment of the utility model, showing a collection tank.

FIG. 3 is a schematic cross-sectional view of an embodiment of the present utility model for showing an abutment plate.

Fig. 4 is an enlarged view of a portion a in fig. 2.

Fig. 5 is a schematic structural view for showing a connection board according to an embodiment of the present utility model.

Reference numerals illustrate: 1. a collecting tank; 11. an overflow port; 12. an overflow pipe; 13. a reflow assembly; 131. a U-shaped plate; 132. a booster pump; 133. a pressurizing port; 134. an abutting plate; 135. a first plate; 136. a second plate; 137. a slide block; 138. a receiving groove; 139. a positioning block; 14. a water level pre-alarm; 15. a pull rod; 151. a plug-in groove; 16. a fixed rod; 17. a sedimentation tank; 171. a sewage outlet; 172. a connecting plate; 173. a closure plate; 174. a baffle; 175. a water through hole; 18. a locking member; 181. a locking lever; 182. a locking block; 183. a chute; 184. a locking groove; 2. a sewage treatment device; 21. a treatment pool; 22. a filter screen; 23. a purification box; 24. activated carbon; 25. a water inlet; 26. a water outlet; 27. a valve; 28. and a through hole.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-5.

The embodiment of the utility model discloses an overflow control device for urban sewage.

Referring to fig. 1 and 2, the control device comprises a collecting tank 1, a sewage treatment device 2 is arranged on one side of the collecting tank 1, an overflow port 11 is formed in one side of the collecting tank 1, which is close to the sewage treatment device 2, and the overflow port 11 is formed in the upper end of the collecting tank 1. The overflow pipe 12 communicated with the sewage treatment device 2 is fixed in the overflow port 11, and sewage overflowed from the sewage treatment device 2 enters the collecting box along the overflow pipe 12 so as to collect sewage, reduce the condition that the sewage overflows to the surrounding environment and facilitate the control of sewage overflow.

Referring to fig. 1 and 2, the sewage treatment apparatus 2 includes a treatment tank 21 placed on one side of the collection tank 1 near the overflow pipe 12, a filter screen 22 fixed in the treatment tank 21, and a purification box 23 fixed in the treatment tank 21, wherein a water inlet 25 is provided at one end of the treatment tank 21 far from the collection tank 1, a water outlet 26 is provided at the lower end of the treatment tank 21, and a valve 27 is fixed on the water outlet 26. The filter screen 22 is positioned below the overflow pipe 12, the purifying box 23 is positioned below the filter screen 22, and the purifying box 23 is filled with activated carbon 24. After the sewage enters the treatment tank 21 along the water inlet 25, the sewage flows onto the filter screen 22 for filtering, and the filtered sewage flows downwards into the purifying box 23, so that the activated carbon 24 purifies the sewage. The bottom wall of the purifying box 23 is provided with a plurality of through holes 28, so that purified sewage flows out along the through holes 28, and the sewage flows out of the treatment tank 21 along the water outlet 26.

Referring to fig. 1, a return assembly 13 is provided at the upper end of the collecting tank 1, and the return assembly 13 is used for returning the sewage collected by the collecting tank 1 to the sewage treatment apparatus 2. The sewage treatment apparatus 2 is caused to purify sewage so as to purify sewage in the collecting tank 1.

Referring to fig. 2 and 3, the return assembly 13 includes a U-shaped plate 131 hinged to the upper end of the collecting tank 1, and a booster pump 132 fixed to the upper end of the collecting tank 1, with the hinge axis of the U-shaped plate 131 extending in a horizontal direction, and the booster pump 132 is selected as the gas booster pump 132 according to the embodiment of the present utility model. The lower end of the U-shaped plate 131 is bent in a direction approaching the bottom wall of the collecting tank. The booster pump 132 stretches into the booster orifice 133, so that the booster pump 132 increases the pressure of one side of the U-shaped plate 131 far away from the sewage treatment device 2 through the booster orifice 133, sewage flows towards one side of the U-shaped plate 131 close to the sewage treatment device 2, sewage flows upwards into the overflow pipe 12 under pressure and flows into the sewage treatment device 2 along the overflow pipe 12, and sewage in the collection tank 1 is convenient to flow back.

Referring to fig. 3, an abutment plate 134 for blocking the pressurizing port 133 is slidably provided in the horizontal direction in the collecting tank 1, and the abutment plate 134 has an L-shape. So as to reduce the condition that sewage flows into the pressurizing opening 133, reduce the condition that sewage permeates into the pressurizing pump 132 and corrode parts, so as to protect the pressurizing pump 132 and prolong the service life of the pressurizing pump 132.

Referring to fig. 2 and 4,U, the plate 131 includes a first plate 135 hinged to both ends of the collecting tank 1, a second plate 136 having elasticity and sliding in the first plate 135, the second plate 136 is made of rubber, and the hinge axis of the first plate 135 extends in a horizontal direction. The two ends of the second plate 136 slide in the adjacent first plate 135, respectively. The two ends of the second plate 136 are fixed with sliding blocks 137, the first plate 135 is internally provided with a containing groove 138 for sliding the sliding blocks 137 and the second plate 136, the groove wall of the containing groove 138 is fixed with a positioning block 139 for limiting the sliding blocks 137 to slide out, and the bottom wall of the second plate 136 is fixed with a water level early warning device 14. After the sewage abuts against the water level pre-alarm 14, the water level pre-alarm 14 alarms to indicate that the water level of the sewage has reached the bottom wall of the second plate 136, and the water level of the sewage will rise upwards along the first plate 135 and reach the two higher ends of the first plate 135. Then the second plate 136 is rotated upwards, the second plate 136 drives the first plate 135 to rotate upwards, so that the second plate 136 drives the sliding block 137 to slide into the accommodating groove 138, the space between the second plate 136 and the bottom wall of the collecting tank 1 is increased, the water storage space in the collecting tank 1 is increased, sewage flows into the collecting tank 1, the condition that the sewage flows to the overflow pipe 12 and flows back to the sewage treatment device 2 is reduced, and the water storage space in the collecting tank 1 is adjusted.

Referring to fig. 2, a pull rod 15 is fixed to the top wall of the second plate 136, and a plurality of fixing rods 16 are fixed to the top wall of the collecting tank 1, and two fixing rods 16 are selected in the embodiment of the utility model. The end of the fixing rod 16 far away from the collecting tank 1 is elastic, and a plurality of inserting grooves 151 for inserting the elastic end of the fixing rod 16 are formed in the circumferential side wall of the pull rod 15. After the fixing rod 16 is inserted into the inserting groove 151, the pull rod 15 is limited to slide downwards, the second plate 136 is further limited to slide in the first plate 135, and the first plate 135 is limited to rotate, so that the water storage space of the enlarged collecting tank 1 is fixed, and the water storage space of the collecting tank 1 is convenient to adjust.

Referring to fig. 2 and 5, a sedimentation tank 17 is fixed in the collecting tank 1, the sedimentation tank 17 is communicated with the collecting tank 1, the sedimentation tank 17 is positioned below the second plate 136, and impurities in sewage in the collecting tank 1 are settled in the sedimentation tank 17 so as to collect the impurities in the sewage. A drain 171 is provided on the side of the sedimentation tank 17 remote from the sewage treatment apparatus 2. One side of the sedimentation tank 17 far away from the sewage treatment device 2 is hinged with a connecting plate 172, one end of the connecting plate 172 extending into the sedimentation tank 17 is vertically fixed with a blocking plate 173, the hinge shaft of the connecting plate 172 extends into the sewage outlet 171, and the hinge shaft of the connecting plate 172 extends along the horizontal direction. The length of the closure plate 173 is longer than the length of the connection plate 172, the connection plate 172 is clamped in the sedimentation tank 17 by friction, and a locking piece 18 for limiting the rotation of the connection plate 172 is arranged in the sedimentation tank 17.

When the connecting plate 172 rotates to be perpendicular to the collecting tank 1, the connecting plate 172 is fixed by the locking piece 18, the connecting plate 172 is limited to rotate, and the blocking plate 173 is abutted on the inner wall of the collecting tank 1, so that the sewage outlet 171 is blocked, and the sewage flowing out of the sewage outlet 171 is reduced. When the connecting plate 172 is turned into the sewage outlet 171 and clamped in the sedimentation tank 17 by friction force, the connecting plate 172 drives the blocking plate 173 to rotate in the collecting tank 1, so that the blocking plate 173 is in sliding contact with the inner wall of the sedimentation tank 17 to block the sedimentation tank 17, and impurities are blocked in the sedimentation tank 17, so that the impurities are driven to flow into the sewage treatment device 2 when sewage is limited to flow back.

Referring to fig. 3 and 5, a baffle 174 is fixed to both ends of the connection plate 172, and an upper end of the baffle 174 is arc-shaped, and the connection plate 172 drives the baffle 174 to slide into the sedimentation tank 17. To reduce the outflow of sewage along the gap between the connection plate 172 and the sedimentation tank 17 when the connection plate 172 is rotated, the sewage is stored between the connection plate 172 and the baffle 174 until the sewage flows back into the sedimentation tank 17 after the connection plate 172 is turned into the sedimentation tank 17.

Referring to fig. 3 and 5, the locking member 18 includes a locking bar 181 sliding in the vertical direction in the collecting tank 1, and a locking block 182 fixed to the upper end of the locking bar 181, the locking block 182 penetrating the settling tank 17. A chute 183 for sliding the locking rod 181 and the locking block 182 along the vertical direction is arranged in the sedimentation tank 17, and a plurality of locking grooves 184 for sliding the locking block 182 along the horizontal direction are arranged on the wall of the chute 183. When the connection plate 172 rotates to be perpendicular to the side wall of the sedimentation tank 17, the blocking plate 173 abuts against the inner wall of the sedimentation tank 17 to block the sewage outlet 171. The locking block 182 slides out of the locking groove 184 along the horizontal direction, the locking block 182 drives the locking rod 181 to slide downwards, the bottom wall of the locking rod 181 abuts against the top wall of the connecting plate 172, and then the locking block 182 slides into the locking groove 184 along the horizontal direction so as to limit the locking rod 181 to slide, and further limit the connecting plate 172 to rotate, so that the connecting plate 172 is fixed.

Referring to fig. 5, a plurality of water through holes 175 are formed at one end of the blocking plate 173 away from the connection plate 172 so that the sewage in the sedimentation tank 17 flows out along the water through holes 175 and flows back into the treatment tank together with the sewage in the collection tank 1 so as to purify the sewage in the sedimentation tank 17.

The embodiment of the utility model relates to an implementation principle of an overflow control device for urban sewage, which comprises the following steps: when sewage is treated, the sewage directly flows into the sewage treatment device 2 for purification, and the purified sewage is discharged out of the sewage treatment device 2. When the sewage quantity is large, the sewage flows into the overflow pipe 12 along the overflow port 11, flows into the collecting tank 1 along the overflow pipe 12, and impurities in the sewage are deposited downwards into the sedimentation tank 17 under the gravity. When the sewage level reaches the water level precaution device 14, the water level precaution device 14 gives an alarm. Then, the fixing rod 16 is slid in a direction away from the pull rod 15, so that the fixing rod 16 is stressed and deformed, and the fixing rod 16 slides out of the inserting groove 151 and is restored to deformation. And then the pull rod 15 is pulled upwards, the pull rod 15 drives the second plate 136 to slide upwards, and the second plate 136 drives the first plate 135 to slide upwards, so that the two ends of the second plate 136 slide into the first plate 135, and the water storage space of the collecting tank 1 is enlarged. And then the fixing rod 16 is moved towards the direction approaching to the pull rod 15, so that the fixing rod 16 is inserted into the inserting groove 151 to limit the sliding of the pull rod 15, and further limit the sliding of the second plate 136 and the rotation of the first plate 135, so that the water storage space of the collecting tank 1 after being enlarged is fixed. Until the sewage is discharged, the fixed locking block 182 slides out of the locking groove 184 along the horizontal direction, and the locking block 182 drives the locking rod 181 to slide upwards, so that the state that the locking rod 181 is abutted against the connecting plate 172 is released. Then, the connecting plate 172 rotates towards the direction close to the sedimentation tank 17, the connecting plate 172 drives the blocking plate 173 to rotate, and one end of the blocking plate 173 away from the connecting plate 172 is in sliding contact with the side wall of the sedimentation tank 17, so that the sedimentation tank 17 is blocked, and impurities are blocked in the sedimentation tank 17. The connecting plate 172 is clamped in the sedimentation tank 17 to seal the sewage outlet 171. Then the abutting plate 134 slides out of the collecting tank 1, the pressurizing opening 133 is exposed, the pressurizing pump 132 is started again, the pressurizing pump 132 is enabled to increase the pressure intensity of the U-shaped plate 131 on the side far away from the sewage treatment device 2, and the pressure difference is generated in the collecting tank 1, so that sewage flows towards the direction close to the sewage treatment device 2 and flows into the sewage treatment device 2 along the overflow pipe 12, and the sewage treatment device 2 purifies the sewage. The overflow of sewage from the sewage treatment apparatus 2 to the surrounding environment is reduced, thereby facilitating the control of sewage overflow.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. An overflow control device for urban sewage, which is characterized in that: including collecting vat (1), one side of collecting vat (1) is equipped with sewage treatment plant (2), overflow mouth (11) have been seted up to collecting vat (1) upper end, be equipped with the intercommunication in overflow mouth (11) overflow pipe (12) of sewage treatment plant (2), be equipped with backward flow subassembly (13) on collecting vat (1), collecting vat (1) are used for collecting sewage that sewage treatment plant (2) overflowed, backward flow subassembly (13) are used for with sewage in collecting vat (1) backward flow extremely in sewage treatment plant (2).

2. The municipal sewage overflow control device according to claim 1, wherein: the reflux assembly (13) comprises a U-shaped plate (131) arranged at the upper end of the collecting tank (1) and a booster pump (132) arranged at the upper end of the collecting tank (1), the U-shaped plate (131) bends towards the direction close to the bottom wall of the collecting tank (1), the collecting tank (1) is far away from one end of the overflow pipe (12) and provided with a booster orifice (133), and the booster pump (132) stretches into the booster orifice (133).

3. The municipal sewage overflow control device according to claim 2, wherein: one end of the collecting tank (1) close to the booster pump (132) slides to be provided with an abutting plate (134), and the abutting plate (134) is used for plugging the booster port (133).

4. The municipal sewage overflow control device according to claim 2, wherein: the U-shaped plate (131) comprises a first plate (135) hinged to two ends of the collecting tank (1), a second plate (136) sliding in the first plate (135) and provided with elasticity, a pull rod (15) is arranged on the top wall of the second plate (136), two ends of the collecting tank (1) are provided with elastic fixing rods (16), and a plurality of inserting grooves (151) for inserting the fixing rods (16) are formed in the circumferential side walls of the pull rod (15).

5. The municipal sewage overflow control device according to claim 4, wherein: the bottom wall of the second plate (136) is provided with a water level early warning device (14).

6. The municipal sewage overflow control device according to claim 1, wherein: the utility model discloses a sedimentation tank, including sedimentation tank (17), collecting tank (1), drain (171) are offered to the lower extreme of collecting tank (1), drain (171) are offered to the lateral wall of sedimentation tank (17), articulated on the lateral wall of sedimentation tank (17) have connecting plate (172), one end perpendicular to that connecting plate (172) stretches into sedimentation tank (17) is fixed with closure plate (173), the length of closure plate (173) is longer than the length of connecting plate (172), connecting plate (172) chucking in sedimentation tank (17), be equipped with the restriction in sedimentation tank (17) connecting plate (172) pivoted locking piece (18).

7. The municipal sewage overflow control device according to claim 6, wherein: the locking piece (18) comprises a locking rod (181) sliding in the sedimentation tank (17), and a locking block (182) fixed at the upper end of the locking rod (181), wherein a chute (183) for sliding the locking rod (181) is formed in one side, close to the connecting plate (172), of the sedimentation tank (17), a plurality of locking grooves (184) for horizontally sliding in the locking block (182) are formed in the wall of the chute (183), and the locking rod (181) abuts against the top wall of the connecting plate (172).

8. The municipal sewage overflow control device according to claim 7, wherein: the blocking plate (173) is provided with a plurality of water holes (175).