A diversion type drainage interception well

Abstract

The present invention relates to a diversion-type drainage interception well, comprising a well cavity and a well cover; the well cavity is divided into an inlet chamber, a sewage chamber, an initial rain chamber and an overflow chamber, the inlet chamber is located at the upper part of the well cavity, and the bottom wall of the inlet chamber is inclined, the sewage chamber, the initial rain chamber and the overflow chamber are arranged in sequence and adjacently at the lower part of the well cavity, and the sewage chamber, the initial rain chamber and the overflow chamber are all connected to the inlet chamber, a first linkage mechanism and a second linkage mechanism are arranged in the inlet chamber, an inlet pipe is arranged on the side wall of the inlet chamber, and a sewage outlet pipe, an initial rain outlet pipe and an overflow outlet pipe are respectively correspondingly arranged at the lower part of the side wall of the sewage chamber, the initial rain chamber and the overflow chamber. The present invention realizes automatic classification and interception of sunny sewage and rain-sewage mixed sewage on rainy days, so that subsequent sewage and initial rain treatment facilities can be targetedly treated, and the water in the downstream pipeline or water body is not easy to form backflow in the interception well, thereby reducing the treatment load of subsequent treatment facilities and improving their treatment efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of municipal pipelines, and in particular to a diversion-type drainage interception well. Background Art

[0002] In the traditional urban drainage network system, the intercepting combined sewer network system is a more common one. An intercepting pipe is set at the drainage trunk pipe that discharges into the water body at the end of the traditional combined sewer system, and an intercepting well is set at the intersection of the drainage trunk pipe and the intercepting pipe. The sewage on sunny days and the mixed sewage of rain and sewage in the early stage of rainfall are intercepted in the intercepting well through the same set of intercepting pipes and discharged to the sewage treatment plant for treatment. In the middle and late stages of rainfall, with the increase of rainfall, when the amount of mixed sewage exceeds the drainage capacity of the intercepting pipe, this excess mixed sewage will overflow in the intercepting well, and the overflowing mixed sewage will be discharged into the downstream water body through the drainage trunk pipe. Therefore, the intercepting well is one of the important drainage facilities in the intercepting combined sewer network system.

[0003] Traditional interception wells include trough-type interception wells and weir-type interception wells. These interception wells often have the following problems: (1) They do not effectively separate sunny-day sewage from the mixed sewage at the beginning of rainfall. Instead, they are intercepted by the same set of interception pipes and discharged into the downstream water body. Studies have shown that rainwater at the beginning of rainfall carries a large amount of pollutants, including dust in the air, ground debris and grease. The pollutants it contains are even more than sunny-day sewage. Therefore, if it is directly transported to the sewage treatment plant, it will have a great impact on its treatment system or even damage it. (2) Because traditional interception wells need to lower the elevation of the interception pipe, when the water level of the downstream water body rises, backflow will occur in the interception well. The backflow water flows into the interception pipe in the interception well and then into the sewage treatment plant. This will increase the treatment load of the sewage treatment plant and change the water quality of the influent, affecting the treatment effect of the sewage treatment plant. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a diversion type drainage interception well to address the deficiencies of the above-mentioned prior art, so as to classify and intercept sunny day sewage and mixed sewage from different stages of rainfall and then transport them to relevant downstream facilities or water bodies.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a diversion-type drainage interception well, comprising a well cavity with an upper opening and a well cover arranged at the upper end of the well cavity and capable of opening or closing its upper port;

[0006] The well cavity is divided into a water inlet chamber, a sewage chamber, a primary rain chamber and an overflow chamber by a partition. The water inlet chamber is located at the upper part of the well cavity, and the bottom wall of the water inlet chamber is inclined. The sewage chamber, the primary rain chamber and the overflow chamber are arranged adjacent to each other in sequence at the lower part of the well cavity, and the sewage chamber, the primary rain chamber and the overflow chamber are all connected with the water inlet chamber. The sewage chamber is located on one side of the lower end of the bottom wall of the water inlet chamber. A first linkage mechanism for switching the channel between the sewage chamber and the primary rain chamber according to the water level inside the water inlet chamber is provided in the water inlet chamber. A second linkage mechanism for switching the channel between the primary rain chamber and the overflow chamber according to the water level inside the water inlet chamber is also provided in the water inlet chamber. A water inlet pipe connected with the water inlet chamber is provided on the side wall of the water inlet chamber, and a sewage outlet pipe, a primary rain outlet pipe and an overflow outlet pipe are connected with the lower parts of the side walls of the sewage chamber, the primary rain chamber and the overflow chamber respectively.

[0007] The beneficial effects of the present invention are as follows: the diversion-type drainage interception well of the present invention realizes automatic classification and interception of sewage on sunny days and mixed sewage of rain and sewage on rainy days by dividing the well cavity into an inlet chamber, a sewage chamber, an initial rain chamber and an overflow chamber, and then diverting the sewage through the inlet chamber to the sewage chamber, the initial rain chamber or the overflow chamber, so that subsequent sewage treatment facilities and initial rain treatment facilities can carry out targeted treatment to give full play to the engineering benefits of each treatment facility, thereby protecting the water quality of the downstream receiving water body. At the same time, the device adopts a structural form of different well cavity compartments and does not reduce the elevation of the initial rain interception pipeline or the sewage interception pipeline, so the water in the downstream pipeline or water body is not easy to form backflow in the interception well, thereby reducing the treatment load of the corresponding subsequent sewage or initial rain treatment facilities during the rainy season and improving their treatment efficiency.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows:

[0009] Further: an inclined plate is obliquely arranged in the middle of the well cavity, and the upper part of the well cavity is divided into the water inlet chamber, two longitudinal partitions are vertically arranged at intervals in the lower part of the well cavity, and the lower part of the well cavity is sequentially divided into the sewage chamber, the initial rain chamber and the overflow chamber, and the sewage chamber is arranged on one side of the lower end of the inclined plate, a transverse partition is arranged on one side of the lower part of the well cavity close to the higher end of the inclined plate, and a connecting chamber is formed at the bottom of the well cavity, and the connecting chamber is located below the initial rain chamber and the overflow chamber, a sewage inlet, an initial rain upper inlet and an overflow inlet which are connected to the sewage chamber, the initial rain chamber and the overflow chamber are respectively arranged on the inclined plate, a primary rain lower inlet is arranged in the middle of the primary rain chamber for discharging the rainwater entering therein through the primary rain outlet pipe, the first linkage mechanism opens the sewage inlet or the initial rain upper inlet according to the water level in the water inlet chamber, and the second linkage mechanism opens the overflow inlet or the initial rain lower inlet according to the water level in the water inlet chamber.

[0010] The beneficial effect of the above further scheme is: by arranging the inclined plate to form an inclined bottom wall in the water inlet chamber, different water levels are reached in the water inlet chamber at different stages of sunny days or rain, thereby forming different water pressures, and cooperating with the first linkage mechanism to open the sewage inlet or the upper water inlet of the initial rain, and cooperating with the second linkage mechanism to open the overflow water inlet or the lower water inlet of the initial rain, so as to automatically classify and intercept the sunny day sewage and the mixed sewage of rain and sewage in the rainy season under different weather conditions, so as to facilitate targeted treatment of incoming water of different water quality and greatly improve the pollution control capacity.

[0011] Further: the sewage inlet, the primary rain upper water inlet, the overflow water inlet and the primary rain lower water inlet are respectively provided with a sewage blocking mechanism, a primary rain upper blocking mechanism, an overflow blocking mechanism and a primary rain lower blocking mechanism for opening or closing the corresponding water inlets; the first linkage mechanism is respectively connected to the sewage blocking mechanism and the primary rain upper blocking mechanism, and controls the sewage blocking mechanism to open the sewage inlet according to the water level in the water inlet chamber, or controls the primary rain upper blocking mechanism to open the primary rain upper water inlet; the second linkage mechanism is respectively connected to the overflow blocking mechanism and the primary rain lower blocking mechanism, and controls the overflow blocking mechanism to open the overflow water inlet according to the water level in the water inlet chamber, or controls the primary rain lower blocking mechanism to open the primary rain lower water inlet.

[0012] The beneficial effect of the above further scheme is: by setting the sewage blocking mechanism, the initial rain upper blocking mechanism, the overflow blocking mechanism and the initial rain lower blocking mechanism, and cooperating with the first linkage mechanism and the second linkage mechanism, the corresponding water inlet can be opened or closed according to the water level in the water inlet chamber, and the water flow channel switching in different stages of sewage and rainfall on sunny days can be completed, and the classification and interception of incoming water of different water quality can be achieved, which is convenient for the subsequent downstream to adopt corresponding facilities for targeted treatment.

[0013] Further: a cutoff plate is provided in the middle of the initial rain chamber, and the initial rain chamber is divided into an initial rain transition chamber located at the upper part and an initial rain outlet chamber located at the lower part, and the initial rain lower water inlet for connecting the initial rain transition chamber and the initial rain outlet chamber is located in the middle of the cutoff plate, the initial rain lower blocking mechanism is arranged at the initial rain lower water inlet, and the initial rain lower blocking mechanism is located in the initial rain transition chamber, and the initial rain outlet pipe is connected to the initial rain outlet chamber.

[0014] The beneficial effect of the above further scheme is that the initial rain chamber can be divided into the initial rain transition chamber and the initial rain outlet chamber by arranging the intercepting plate. On the one hand, it is convenient to control the flow direction of rainwater entering the initial rain transition chamber through the initial rain lower water inlet arranged on the intercepting plate, and on the other hand, it is convenient for the rainwater entering the initial rain transition chamber to be settled and discharged.

[0015] Further: the sewage blocking mechanism comprises a sewage piston and a sewage telescopic orifice plate, the sewage piston is arranged at the sewage inlet through the sewage telescopic orifice plate, and the sewage piston is located above the sewage inlet;

[0016] The initial rain upper blocking mechanism comprises an initial rain upper piston and an initial rain telescopic orifice plate, wherein the initial rain upper piston is arranged at the initial rain upper water inlet through the initial rain upper telescopic orifice plate, and the initial rain upper piston is located below the initial rain upper water inlet;

[0017] The overflow blocking mechanism includes an overflow piston and an overflow telescopic orifice plate, the overflow piston is arranged at the overflow water inlet through the overflow telescopic orifice plate, and the overflow piston is located below the overflow water inlet;

[0018] The first rain blocking mechanism comprises a first rain piston, and the first rain piston is located above the first rain water inlet;

[0019] The upper ends of the sewage piston and the initial rain upper piston are respectively connected to the first linkage mechanism, and when the water level in the water inlet chamber changes, the water pressure can drive the initial rain upper piston to move downward or upward to open or close the initial rain upper water inlet, and the initial rain upper piston drives the sewage piston to move downward or upward through the first linkage mechanism to close or open the sewage water inlet;

[0020] The overflow piston and the initial rain piston are respectively connected to the second linkage mechanism, and when the water level in the water inlet chamber changes, the water pressure can drive the overflow piston to move downward or upward to open or close the overflow water inlet, and the overflow piston drives the initial rain piston to move downward or upward through the second linkage mechanism to close or open the initial rain water inlet.

[0021] The beneficial effect of the above further scheme is that by setting the sewage piston, the initial rain upper piston, the overflow piston and the initial rain lower piston, the corresponding water inlet can be conveniently opened or closed, and with the cooperation of the first linkage mechanism, the sewage inlet and the initial rain upper water inlet can be synchronously switched according to the water level in the water inlet chamber, and with the cooperation of the second linkage mechanism, the overflow water inlet and the initial rain lower water inlet can be synchronously switched according to the water level in the water inlet chamber. It is automatically controlled and has a simple structure, and it is relatively convenient to realize the classified interception of sewage on sunny days and rainwater and sewage mixed water at different stages of rainfall.

[0022] Further: the first linkage mechanism includes a first spring and a first linkage rod, the first spring is located in the water inlet chamber, the first linkage rod is door-shaped, and its two ends are respectively connected and fixed to the upper end of the sewage piston and the upper end of the initial rain upper piston, one end of the first spring is connected and fixed to the inner top wall of the manhole cover, and the other end is connected and fixed to the middle part of the first linkage rod, and when the sewage piston or the initial rain upper piston moves, the first linkage mechanism drives the initial rain upper piston or the sewage piston to move synchronously.

[0023] The beneficial effect of the above further scheme is that: through the first spring, when the sewage piston or the initial rain upper piston is moved by water pressure, the first linkage rod can be coordinated to move, and the other party can be driven to move, thereby realizing the synchronous switching of the switch status of the sewage inlet and the initial rain upper inlet.

[0024] Further: the second linkage mechanism includes a second spring and a second linkage rod, the second spring is located in the water inlet chamber, the second linkage rod is an inverted door type, and its horizontal section is located in the connecting chamber, its two ends respectively extend into the overflow chamber and the initial rain chamber, and are respectively connected and fixed to the lower end of the overflow piston and the lower end of the initial rain piston, one end of the second spring is connected and fixed to the inner top wall of the manhole cover, and the other end is connected and fixed to the upper end of the overflow piston, and when the initial rain piston or the overflow piston moves, the second linkage mechanism drives the overflow piston or the initial rain piston to move synchronously.

[0025] The beneficial effect of the above further scheme is that the second spring can cooperate with the movement of the second linkage rod when the overflow piston or the initial rain piston is moved by water pressure, and drive the other party to move, thereby realizing synchronous switching of the switch states of the overflow water inlet and the initial rain water inlet.

[0026] Further: the second linkage mechanism also includes a telescopic sleeve, and the parts of the second linkage rod located in the overflow chamber and the initial rain chamber are respectively sleeved with the telescopic sleeve.

[0027] The beneficial effect of the above further scheme is: by setting the telescopic sleeve, on the one hand, the second linkage rod can be effectively protected, and on the other hand, the overflow piston or the initial rain piston can be deformed when it moves due to water level changes, so that after the water level in the water inlet chamber is subsequently reset, the second linkage rod can be easily reset under the action of the restoring force of the telescopic sleeve.

[0028] Further: a sedimentation plate perpendicular to the transverse partition is provided in the initial rain outlet chamber.

[0029] The beneficial effect of the above further scheme is that the sedimentation plate is provided to facilitate the adjustment of the flow state of the rainwater and sewage mixed water entering the primary rain outlet chamber, thereby facilitating the precipitation of impurities in the rainwater and sewage mixed water.

[0030] Further: the lower end of the bottom wall of the water inlet chamber is recessed downwards and is provided with a sedimentation tank.

[0031] The beneficial effect of the above further scheme is that the sedimentation tank can facilitate the preliminary sedimentation of sewage on sunny days or mixed sewage from rain and sewage when it rains when entering the water inlet chamber, thereby avoiding a large amount of mud and residue from being discharged to the downstream treatment facilities through the interception well, causing a large load on the downstream treatment facilities, which is beneficial to improving the sewage treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic longitudinal section diagram of the diversion type drainage interception well of the present invention;

[0033] Figure 2 AA cross-sectional view of the diversion type drainage interception well of the present invention;

[0034] Figure 3 It is a schematic diagram of the planar structure of the initial rain outlet chamber of the present invention;

[0035] Figure 4 It is a BB cross-sectional view of the initial rain outlet chamber of the present invention.

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 1. Well cavity, 2. Well cover, 3. Side plate, 4. Bottom plate, 5. Longitudinal partition, 6. Horizontal partition, 7. Inclined plate, 8. Water inlet chamber, 9. Sewage chamber, 10. Initial rain chamber, 11. Overflow chamber, 12. Connecting chamber, 13. Sewage inlet, 14. Initial rain upper inlet, 15. Overflow inlet, 16. Sewage piston, 17. Initial rain upper piston, 18. Overflow piston, 19. First spring, 20. First linkage rod, 21. The second spring, 22. the initial rain piston, 23. the second linkage rod, 24. the water inlet pipe, 25. the sewage outlet pipe, 26. the initial rain outlet pipe, 27. the overflow outlet pipe, 28. the intercepting plate, 29. the initial rain transition chamber, 30. the initial rain outlet chamber, 31. the initial rain water inlet, 32. the sewage telescopic orifice plate, 33. the initial rain telescopic orifice plate, 34. the overflow telescopic orifice plate, 35. the telescopic sleeve, 36. the sedimentation plate, 37. the sedimentation tank. DETAILED DESCRIPTION

[0038] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0039] like Figure 1 and Figure 2As shown, a diversion-type drainage interception well comprises a well cavity 1 with an upper opening and a well cover 2 arranged at the upper end of the well cavity 1 and capable of opening or closing its upper port; the well cavity 1 is divided into an inlet chamber 8, a sewage chamber 9, an initial rain chamber 10 and an overflow chamber 11 by a partition, the inlet chamber 8 is located at the upper part of the well cavity 1, and the bottom wall of the inlet chamber 8 is inclined, the sewage chamber 9, the initial rain chamber 10 and the overflow chamber 11 are arranged adjacent to each other in sequence at the lower part of the well cavity 1, and the sewage chamber 9, the initial rain chamber 10 and the overflow chamber 11 are all connected to the inlet chamber 8, the sewage chamber 9 is located at the upper part of the well cavity 1, and the bottom wall of the inlet chamber 8 is inclined, and the sewage chamber 9, the initial rain chamber 10 and the overflow chamber 11 are arranged adjacent to each other in sequence at the lower part of the well cavity 1, and the sewage chamber 9, the initial rain chamber 10 and the overflow chamber 11 are all connected to the inlet chamber 8, and the sewage chamber 9 is located at the upper part of the well cavity 1. On one side of the lower end of the bottom wall of the water inlet chamber 8, a first linkage mechanism is provided in the water inlet chamber 8 for switching the channel between it and the sewage chamber 9 and the initial rain chamber 10 according to the water level inside it, and a second linkage mechanism is also provided in the water inlet chamber 8 for switching the channel between it and the initial rain chamber 10 and the overflow chamber 11 according to the water level inside it. A water inlet pipe 24 connected to it is provided on the side wall of the water inlet chamber 8, and a sewage outlet pipe 25, an initial rain outlet pipe 26 and an overflow outlet pipe 27 are respectively connected to the lower parts of the side walls of the sewage chamber 9, the initial rain chamber 10 and the overflow chamber 11.

[0040] The diversion-type drainage interception well of the present invention divides the well cavity 1 into an inlet chamber 8, a sewage chamber 9, an initial rain chamber 10 and an overflow chamber 11, and then diverts the sewage through the inlet chamber 8 to the sewage chamber 9, the initial rain chamber 10 or the overflow chamber 11, thereby realizing automatic classification and interception of sewage on sunny days and mixed sewage of rain and sewage on rainy days, so that subsequent sewage treatment facilities and initial rain treatment facilities can carry out targeted treatment to give full play to the engineering benefits of each treatment facility, thereby protecting the water quality of the downstream receiving water body. At the same time, the device adopts a structural form of different well cavity compartments and does not reduce the elevation of the initial rain interception pipeline or the sewage interception pipeline, so the water in the downstream pipeline or water body is not easy to flow back in the interception well, thereby reducing the treatment load of the corresponding subsequent sewage or initial rain treatment facilities during the rainy season and improving their treatment efficiency.

[0041] In the present invention, the well cavity 1 includes a plurality of side plates 3 and a bottom plate 4, wherein the plurality of side plates 3 are connected end to end in sequence to form a cylindrical structure with upper and lower ends open, and the bottom plate 4 is disposed at the bottom of the cylindrical structure to form the well cavity 1 with an upper end open. In practice, four or more side plates 3 may be selected to be connected end to end in sequence, and the bottom plate 4 may be fixed to the lower end of each side plate 3, thereby forming the well cavity 1 with an upper end open.

[0042] In one or more embodiments provided by the present invention, an inclined plate 7 is obliquely arranged in the middle of the well cavity 1, and the upper part of the well cavity 1 is divided into the water inlet chamber 8, and two longitudinal partitions 5 are vertically spaced at intervals in the lower part of the well cavity 1, and the lower part of the well cavity 1 is sequentially divided into the sewage chamber 9, the initial rain chamber 10 and the overflow chamber 11, and the sewage chamber 9 is arranged on one side of the lower end of the inclined plate 7, and a transverse partition 6 is arranged on one side of the lower part of the well cavity 1 close to the higher end of the inclined plate 7, and a connecting chamber 12 is formed at the bottom of the well cavity 1, and the connecting chamber 12 is located between the initial rain chamber 10 and the overflow chamber 11. Below the overflow chamber 11, the inclined plate 7 is respectively provided with a sewage inlet 13, a primary rain upper inlet 14 and an overflow inlet 15 which are connected to the sewage chamber 9, the primary rain chamber 10 and the overflow chamber 11. The middle part of the primary rain chamber 10 is provided with a primary rain lower inlet 31 for discharging the rainwater entering therein through the primary rain outlet pipe 26. The first linkage mechanism opens the sewage inlet 13 or the primary rain upper inlet 14 according to the water level in the water inlet chamber 8, and the second linkage mechanism opens the overflow inlet 15 or the primary rain lower inlet 31 according to the water level in the water inlet chamber 8. By arranging the inclined plate 7 to form an inclined bottom wall in the water inlet chamber 8, different water levels are reached in the water inlet chamber 8 at different stages of sunny days or rain, thereby forming different water pressures. The first linkage mechanism is cooperated to open or close the sewage inlet 13 or the upper water inlet 14 for the initial rain, and the second linkage mechanism is cooperated to open or close the overflow water inlet 15 or the lower water inlet 31 for the initial rain, so that the sewage on sunny days and the mixed sewage of rain and sewage in the rainy season can be automatically classified and intercepted under different weather conditions, which is convenient for targeted treatment of incoming water of different water quality and greatly improves the pollution control capacity.

[0043] In one or more embodiments provided by the present invention, the sewage inlet 13, the primary rain upper water inlet 14, the overflow water inlet 15 and the primary rain lower water inlet 31 are respectively provided with a sewage blocking mechanism, a primary rain upper blocking mechanism, an overflow blocking mechanism and a primary rain lower blocking mechanism for opening or closing the corresponding water inlets, the first linkage mechanism is respectively connected to the sewage blocking mechanism and the primary rain upper blocking mechanism, and controls the sewage blocking mechanism to open the sewage inlet 13 according to the water level in the water inlet chamber 8, or controls the primary rain upper blocking mechanism to open the primary rain upper water inlet 14, the second linkage mechanism is respectively connected to the overflow blocking mechanism and the primary rain lower blocking mechanism, and controls the overflow blocking mechanism to open the overflow water inlet 15 according to the water level in the water inlet chamber 8, or controls the primary rain lower blocking mechanism to open the primary rain lower water inlet 31. By setting the sewage blocking mechanism, the initial rain upper blocking mechanism, the overflow blocking mechanism and the initial rain lower blocking mechanism, and cooperating with the first linkage mechanism and the second linkage mechanism, the corresponding water inlet can be opened or closed according to the water level in the water inlet chamber 8, so as to complete the switching of water flow channels in different stages of sunny sewage and rainfall, realize the classified interception of water of different water qualities, and facilitate the subsequent downstream to adopt corresponding facilities for targeted treatment.

[0044] Optionally, in one or more embodiments provided by the present invention, a cutoff plate 28 is provided in the middle of the initial rain chamber 10, and the initial rain chamber 10 is divided into an initial rain transition chamber 29 located at the upper part and an initial rain outlet chamber 30 located at the lower part, and the initial rain lower water inlet 31 for connecting the initial rain transition chamber 29 and the initial rain outlet chamber 30 is located in the middle of the cutoff plate 28, the initial rain lower blocking mechanism is provided at the initial rain lower water inlet 31, and the initial rain lower blocking mechanism is located in the initial rain transition chamber 29, and the initial rain outlet pipe 26 is connected to the initial rain outlet chamber 30. The cutoff plate 28 can be provided to divide the initial rain chamber 10 into the initial rain transition chamber 29 and the initial rain outlet chamber 30, which is convenient for controlling the flow direction of rainwater entering the initial rain transition chamber 29 through the initial rain lower water inlet 31 provided on the cutoff plate 28, and is convenient for the precipitation and discharge of rainwater entering the initial rain transition chamber 29.

[0045] In one or more embodiments provided by the present invention, the sewage blocking mechanism includes a sewage piston 16 and a sewage telescopic orifice plate 32, the sewage piston 16 is arranged at the sewage inlet 13 through the sewage telescopic orifice plate 32, and the sewage piston 16 is located above the sewage inlet 13;

[0046] The initial rain upper blocking mechanism includes an initial rain upper piston 17 and an initial rain telescopic orifice plate 33. The initial rain upper piston 17 is arranged at the initial rain upper water inlet 14 through the initial rain upper telescopic orifice plate 33, and the initial rain upper piston 17 is located below the initial rain upper water inlet 14.

[0047] The overflow blocking mechanism includes an overflow piston 18 and an overflow telescopic orifice plate 34. The overflow piston 18 is disposed at the overflow water inlet 15 through the overflow telescopic orifice plate 34, and the overflow piston 18 is located below the overflow water inlet 15.

[0048] The initial rain blocking mechanism includes an initial rain piston 22, and the initial rain piston 22 is located above the initial rain water inlet 31;

[0049] The upper ends of the sewage piston 16 and the initial rain upper piston 17 are respectively connected to the first linkage mechanism, and when the water level in the water inlet chamber 8 changes, the water pressure can drive the initial rain upper piston 17 to move downward or upward to open or close the initial rain upper water inlet 14, and the initial rain upper piston 17 drives the sewage piston 16 to move downward or upward through the first linkage mechanism to close or open the sewage water inlet 13;

[0050] The overflow piston 18 and the initial rain piston 22 are respectively connected to the second linkage mechanism, and when the water level in the water inlet chamber 8 changes, the water pressure can drive the overflow piston 18 to move downward or upward to open or close the overflow water inlet 15, and the overflow piston 18 drives the initial rain piston 22 to move downward or upward through the second linkage mechanism to close or open the initial rain water inlet 31.

[0051] By setting the sewage piston 16, the initial rain upper piston 17, the overflow piston 18 and the initial rain lower piston 22, the corresponding water inlets can be conveniently opened or closed, and with the cooperation of the first linkage mechanism, the sewage inlet 13 and the initial rain upper water inlet 14 can be synchronously switched according to the water level in the water inlet chamber 8, and with the cooperation of the second linkage mechanism, the overflow water inlet 15 and the initial rain lower water inlet 31 can be synchronously switched according to the water level in the water inlet chamber 8. It is automatically controlled and has a simple structure, and is relatively convenient to realize the classified interception of sunny sewage and rainwater and sewage mixed water in different stages of rainfall.

[0052] Here, the sewage expansion orifice plate 32, the initial rain expansion orifice plate 33 and the overflow expansion orifice plate 34 are respectively provided with a plurality of small holes for sewage or rainwater to pass through, so as to facilitate the sewage or rainwater to be discharged into the corresponding well chamber.

[0053] In one or more embodiments provided by the present invention, the first linkage mechanism includes a first spring 19 and a first linkage rod 20, the first spring 19 is located in the water inlet chamber 8, the first linkage rod 20 is door-shaped, and its two ends are respectively connected and fixed to the upper end of the sewage piston 16 and the upper end of the initial rain upper piston 17, one end of the first spring 19 is connected and fixed to the inner top wall of the manhole cover 2, and the other end is connected and fixed to the middle of the first linkage rod 20, and when the sewage piston 16 or the initial rain upper piston 17 moves, the first linkage mechanism drives the initial rain upper piston 17 or the sewage piston 16 to move synchronously. The first spring 19 can cooperate with the first linkage rod 20 to move when the sewage piston 16 or the initial rain upper piston 17 is subjected to water pressure movement, and drive the other party to move, so as to realize the synchronous switching of the switch state of the sewage inlet 13 and the initial rain upper water inlet 14.

[0054] In one or more embodiments provided by the present invention, the second linkage mechanism includes a second spring 21 and a second linkage rod 23, the second linkage rod 23 is in the shape of an inverted door, and its horizontal section is located in the connecting chamber 12, and its two ends extend into the overflow chamber 11 and the initial rain chamber 10, respectively, and are respectively connected and fixed to the lower end of the overflow piston 18 and the lower end of the initial rain piston 22, one end of the second spring 21 is connected and fixed to the inner top wall of the manhole cover 2, and the other end is connected and fixed to the upper end of the overflow piston 18, and when the initial rain piston 22 or the overflow piston 18 moves, the second linkage mechanism drives the overflow piston 18 or the initial rain piston 22 to move synchronously. The second spring 21 can cooperate with the second linkage rod 23 to move when the overflow piston 18 or the initial rain piston 22 is subjected to water pressure movement, and drive the other party to move, so as to realize the synchronous switching of the switch state of the overflow water inlet 15 and the initial rain water inlet 31.

[0055] Optionally, in one or more embodiments provided by the present invention, the second linkage mechanism further includes a telescopic sleeve 35, and the portions of the second linkage rod 23 located in the overflow chamber 11 and the initial rain chamber 10 are respectively sleeved with the telescopic sleeve 35. By providing the telescopic sleeve 35, on the one hand, the second linkage rod 23 can be effectively protected, and on the other hand, the overflow piston 18 or the initial rain piston 22 can be deformed when it moves due to the change of water level, so that after the water level of the water inlet chamber 8 is subsequently reset, the second linkage rod 23 can be easily reset under the restoring force of the telescopic sleeve 35.

[0056] like Figure 3 and Figure 4As shown, optionally, in one or more embodiments provided by the present invention, at least one settling plate 36 perpendicular to the diaphragm 6 is provided in the primary rain outlet chamber 30. The settling plate 36 is provided to facilitate the adjustment of the flow state of the rainwater and sewage mixed water entering the primary rain outlet chamber 30, and facilitate the precipitation of impurities in the rainwater and sewage mixed water.

[0057] Optionally, in one or more embodiments provided by the present invention, the lower end of the bottom wall of the water inlet chamber 8 is recessed downward to be provided with a sedimentation tank 37. The sedimentation tank 37 can facilitate the initial sedimentation of sewage on sunny days or mixed sewage during rainy days when entering the water inlet chamber 8, thereby avoiding a large amount of mud residue being discharged to downstream treatment facilities through the interception well, which causes a large load on the downstream treatment facilities, and is conducive to improving the sewage treatment efficiency.

[0058] The diversion-type drainage interception well of the present invention can intercept different types of drainage in dry and rainy seasons by classification. The specific principle is as follows:

[0059] When it is not raining, the sewage piston 16 and the initial rain lower piston 22 do not cover the sewage inlet 13 and the initial rain lower inlet 31 respectively, and the initial rain upper piston 17 and the overflow piston 18 cover the initial rain upper inlet 14 and the overflow inlet 15 respectively; because it is not raining, the upstream water is mainly sunny day sewage at this time, and the sunny day sewage enters the water inlet chamber 8 through the inlet pipe 24, and passes through the small holes on the sewage telescopic orifice plate 32 and the sewage inlet 13 in turn into the sewage chamber 9, and is discharged by the sewage outlet pipe 25 connected to the sewage chamber 9, and discharged into the downstream sewage pipe.

[0060] When it starts to rain, the upstream water is mainly rainwater and sewage mixed sewage. At this time, due to the small amount of rainwater, the sewage piston 16 still does not cover the sewage inlet 13, the initial rain lower piston 22 still does not cover the initial rain lower inlet 31, and the initial rain upper piston 17 and the overflow piston 18 still cover the initial rain upper inlet 14 and the overflow inlet 15 respectively; therefore, the rainwater and sewage mixed sewage still enters the water inlet chamber 8 through the water inlet pipe 24, and enters the sewage chamber 9 through the small holes on the sewage telescopic orifice plate 32 and the sewage inlet 13, and is discharged from the sewage outlet pipe 25 connected to the sewage chamber 9, and discharged into the downstream sewage pipe;

[0061] As the rain continues to fall, the amount of rainwater increases, and the amount of mixed rainwater and sewage from upstream also increases. The mixed rainwater and sewage continues to enter the water inlet chamber 8 through the water inlet pipe 24, first enters the sewage chamber 9 through the sewage inlet port 13, and is discharged through the small holes on the sewage telescopic orifice plate 32, the sewage inlet port 13, and the sewage outlet pipe 25 connected to the sewage chamber 9 in sequence. However, since the amount of mixed rainwater and sewage added in the water inlet chamber 8 is greater than the amount of water discharged into the sewage chamber 9 through the small holes on the telescopic orifice plate 32, the water level in the water inlet chamber 8 gradually rises until the water pressure generated by it just presses down the initial rain upper piston 17, causing it to open the initial rain upper water inlet port 14 covered by it. At the same time, due to the initial rain upper The downward movement of the piston 17 drives the first linkage rod 20 and the first spring 19 to move downward, and then the linkage action of the first linkage rod 20 causes the sewage piston 16 to move downward and cover the sewage inlet 13. At this time, the rainwater mixed sewage no longer enters the sewage chamber 9 through the small holes on the telescopic orifice plate 32 and the sewage inlet 13 in sequence, but enters the primary rain transition chamber 29 through the small holes on the primary rain telescopic orifice plate 33 and the primary rain upper water inlet 14 in sequence, and enters the primary rain outlet chamber 30 through the primary rain lower water inlet 31. After being intercepted and treated with sludge by the sedimentation plate 36 in the primary rain outlet chamber 30, it is finally discharged into the downstream primary rain pipe through the primary rain outlet pipe 26 connected to the primary rain outlet chamber 30.

[0062] As the rain continues to fall, the amount of rainwater increases continuously, and the amount of rainwater and sewage mixed in the water inlet chamber 8 is greater than the amount of water discharged into the initial rain transition chamber 29 through the small holes on the initial rain telescopic orifice plate 33. Therefore, the water level in the water inlet chamber 8 continues to rise until the water pressure generated by it just presses the overflow piston 18 downward to open the overflow water inlet 15 covered by it. At the same time, the downward movement of the overflow piston 18 drives the second linkage rod 23 and the second spring 21 to move downward, and the corresponding telescopic sleeve 35 of the overflow piston 18 is also compressed downward, thereby releasing the overflow water inlet 15 through the second linkage rod 23. The linkage action of the moving rod 23 causes the initial rain piston 22 to move downward and cover the initial rain water inlet 31. Correspondingly, the telescopic sleeve 35 of the initial rain piston 22 is also compressed downward. At this time, the rainwater and sewage mixed sewage no longer enters the initial rain outlet chamber 30 through the small holes on the initial rain telescopic orifice plate 33, the initial rain upper water inlet 14 and the initial rain lower water inlet 31 in sequence, but enters the overflow chamber 11 through the small holes on the overflow telescopic orifice plate 34 and the overflow water inlet 15 in sequence, and is discharged into the downstream rainwater pipe through the overflow outlet pipe 27 connected to the overflow chamber 11.

[0063] After the rain stops, the rainwater and sewage mixed sewage stored in the water inlet chamber 8 and the sunny sewage from upstream entering through the water inlet pipe 24 will first pass through the small holes on the overflow telescopic orifice plate 34 and the overflow water inlet 15 to enter the overflow chamber 11 in sequence, and then be discharged into the downstream rainwater pipe through the overflow outlet pipe 27 connected to the overflow chamber 11. At this time, since there is no more rain, the amount of water discharged through the overflow water inlet 15 is large, which is greater than the sunny sewage from upstream entering through the water inlet pipe 24. The water level of the water inlet chamber 8 drops rapidly. When its water level drops to a certain level, the water pressure generated by it on the overflow piston 18 is less than that of the overflow piston 18. The return tension of the second spring 21 is released, and at this time, the overflow piston 18 moves upward to cover the overflow water inlet 15, and the linkage action of the second linkage rod 23 makes the initial rain lower piston 22 move upward and open the initial rain lower water inlet 31 covered by it. At this time, the rainwater and sewage mixed sewage in the water inlet chamber 8 no longer passes through the small holes on the overflow telescopic orifice plate 34 and the overflow outlet pipe 27 connected to the overflow chamber 11 in sequence and is discharged into the downstream rainwater pipe, but passes through the small holes on the initial rain telescopic orifice plate 33 and the initial rain upper water inlet 14 in sequence to enter the initial rain transition chamber 29, and enters the initial rain lower water inlet 31. The primary rain outlet chamber 30 is then discharged into the downstream pipeline by the primary rain outlet pipe 26 connected to the primary rain outlet chamber 30. As the water level in the water inlet chamber 8 continues to drop, the water pressure generated on the primary rain upper piston 17 is further reduced until the water pressure is less than the restoring tension of the first spring 19. At this time, the primary rain upper piston 17 moves upward to cover the primary rain upper water inlet 14, and the sewage piston 16 moves upward through the linkage action of the first linkage rod 20 to open the sewage water inlet 13. At this time, the rainwater and sewage mixed sewage in the water inlet chamber 8 no longer passes through the small holes on the primary rain telescopic orifice plate 33, the primary rain upper The water enters the initial rain outlet chamber 30 through the water inlet 14, the initial rain transition chamber 29 and the initial rain lower water inlet 31 and is discharged from the initial rain outlet pipe 26. Instead, the water enters the sewage chamber 9 through the small holes on the sewage telescopic orifice plate 32 and the sewage inlet 13 in turn, and is discharged from the sewage outlet pipe 25 connected to the sewage chamber 9. At this time, the entire system returns to its initial state, that is, the sewage piston 16 and the initial rain lower piston 22 do not cover the sewage inlet 13 and the initial rain lower water inlet 31 respectively, and the initial rain upper piston 17 and the overflow piston 18 cover the initial rain upper water inlet 14 and the overflow water inlet 15 respectively.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A diversion type drainage interception well, characterized by: It comprises a well cavity (1) with an opening at the upper end and a well cover (2) arranged at the upper end of the well cavity (1) and capable of opening or closing an upper port thereof; The well cavity (1) is divided into a water inlet chamber (8), a sewage chamber (9), an initial rain chamber (10) and an overflow chamber (11) by a partition. The water inlet chamber (8) is located at the upper part of the well cavity (1), and the bottom wall of the water inlet chamber (8) is arranged obliquely. The sewage chamber (9), the initial rain chamber (10) and the overflow chamber (11) are arranged in sequence and adjacent to each other at the lower part of the well cavity (1), and the sewage chamber (9), the initial rain chamber (10) and the overflow chamber (11) are all connected to the water inlet chamber (8). The sewage chamber (9) is located on one side of the lower end of the bottom wall of the water inlet chamber (8). 8) is provided with a first linkage mechanism for switching the passage between it and the sewage chamber (9) and the initial rain chamber (10) according to the water level inside it, and the water inlet chamber (8) is also provided with a second linkage mechanism for switching the passage between it and the initial rain chamber (10) and the overflow chamber (11) according to the water level inside it, and a water inlet pipe (24) is provided on the side wall of the water inlet chamber (8) and is connected thereto, and a sewage outlet pipe (25), an initial rain outlet pipe (26) and an overflow outlet pipe (27) are provided at the lower part of the side walls of the sewage chamber (9), the initial rain chamber (10) and the overflow chamber (11) respectively and correspondingly; A sloping plate (7) is obliquely arranged in the middle of the well cavity (1), and the upper part of the well cavity (1) is divided into the water inlet chamber (8). Two longitudinal partitions (5) are vertically arranged at intervals in the lower part of the well cavity (1), and the lower part of the well cavity (1) is sequentially divided into the sewage chamber (9), the initial rain chamber (10) and the overflow chamber (11), and the sewage chamber (9) is arranged on one side of the lower end of the sloping plate (7). A transverse partition (6) is arranged on one side of the lower part of the well cavity (1) close to the higher end of the sloping plate (7), and a connecting chamber (12) is formed at the bottom of the well cavity (1), and the connecting chamber (12) is located between the initial rain chamber (10) and the overflow chamber (11). Below the water inlet (13), the upper water inlet (14) and the overflow water inlet (15) are respectively provided on the inclined plate (7) and are connected to the sewage chamber (9), the primary rain chamber (10) and the overflow chamber (11); the middle part of the primary rain chamber (10) is provided with a lower water inlet (31) for primary rain to discharge the rainwater entering therein through the primary rain outlet pipe (26); the first linkage mechanism opens the sewage inlet (13) or the upper water inlet (14) of the primary rain according to the water level in the water inlet chamber (8); the second linkage mechanism opens the overflow water inlet (15) or the lower water inlet (31) of the primary rain according to the water level in the water inlet chamber (8); The sewage water inlet (13), the primary rain upper water inlet (14), the overflow water inlet (15) and the primary rain lower water inlet (31) are respectively provided with a sewage blocking mechanism, a primary rain upper blocking mechanism, an overflow blocking mechanism and a primary rain lower blocking mechanism for opening or closing the corresponding water inlets; the first linkage mechanism is respectively connected to the sewage blocking mechanism and the primary rain upper blocking mechanism, and controls the sewage blocking mechanism to open the sewage water inlet (13) or controls the primary rain upper blocking mechanism to open the primary rain upper water inlet (14) according to the water level in the water inlet chamber (8); the second linkage mechanism is respectively connected to the overflow blocking mechanism and the primary rain lower blocking mechanism, and controls the overflow blocking mechanism to open the overflow water inlet (15) or controls the primary rain lower blocking mechanism to open the primary rain lower water inlet (31) according to the water level in the water inlet chamber (8). The sewage blocking mechanism comprises a sewage piston (16) and a sewage telescopic orifice plate (32); the sewage piston (16) is arranged at the sewage inlet (13) through the sewage telescopic orifice plate (32), and the sewage piston (16) is located above the sewage inlet (13); The initial rain upper blocking mechanism comprises an initial rain upper piston (17) and an initial rain telescopic orifice plate (33); the initial rain upper piston (17) is arranged at the initial rain upper water inlet (14) through the initial rain telescopic orifice plate (33), and the initial rain upper piston (17) is located below the initial rain upper water inlet (14); The overflow blocking mechanism comprises an overflow piston (18) and an overflow telescopic orifice plate (34); the overflow piston (18) is arranged at the overflow water inlet (15) through the overflow telescopic orifice plate (34), and the overflow piston (18) is located below the overflow water inlet (15); The initial rain blocking mechanism comprises an initial rain piston (22), and the initial rain piston (22) is located above the initial rain water inlet (31); The upper ends of the sewage piston (16) and the initial rain upper piston (17) are respectively connected to the first linkage mechanism, and when the water level in the water inlet chamber (8) changes, the water pressure can drive the initial rain upper piston (17) to move downward or upward to open or close the initial rain upper water inlet (14), and the initial rain upper piston (17) drives the sewage piston (16) to move downward or upward through the first linkage mechanism to close or open the sewage water inlet (13); The overflow piston (18) and the initial rain piston (22) are respectively connected to the second linkage mechanism, and when the water level in the water inlet chamber (8) changes, the water pressure can drive the overflow piston (18) to move downward or upward to open or close the overflow water inlet (15), and the overflow piston (18) drives the initial rain piston (22) to move downward or upward through the second linkage mechanism to close or open the initial rain water inlet (31); The first linkage mechanism comprises a first spring (19) and a first linkage rod (20); the first linkage rod (20) is door-shaped, and its two ends are respectively connected and fixed to the upper end of the sewage piston (16) and the upper end of the initial rain upper piston (17); one end of the first spring (19) is connected and fixed to the inner top wall of the manhole cover (2), and the other end is connected and fixed to the middle part of the first linkage rod (20); and when the sewage piston (16) or the initial rain upper piston (17) moves, the first linkage mechanism drives the initial rain upper piston (17) or the sewage piston (16) to move synchronously; The second linkage mechanism comprises a second spring (21) and a second linkage rod (23). The second spring (21) is located in the water inlet chamber (8). The second linkage rod (23) is in the shape of an inverted door, and its horizontal section is located in the connecting chamber (12). Its two ends extend into the overflow chamber (11) and the initial rain chamber (10) respectively, and are respectively connected and fixed to the lower end of the overflow piston (18) and the lower end of the initial rain piston (22). One end of the second spring (21) is connected and fixed to the inner top wall of the manhole cover (2), and the other end is connected and fixed to the upper end of the overflow piston (18). When the initial rain piston (22) or the overflow piston (18) moves, the second linkage mechanism drives the overflow piston (18) or the initial rain piston (22) to move synchronously.

2. The diversion type drainage interception well according to claim 1 is characterized in that: A cut-off plate (28) is provided in the middle of the initial rain chamber (10), and the initial rain chamber (10) is divided into an initial rain transition chamber (29) located at the upper part and an initial rain outlet chamber (30) located at the lower part. The initial rain lower water inlet (31) for connecting the initial rain transition chamber (29) and the initial rain outlet chamber (30) is located in the middle of the cut-off plate (28). The initial rain lower blocking mechanism is provided at the initial rain lower water inlet (31), and the initial rain lower blocking mechanism is located in the initial rain transition chamber (29). The initial rain outlet pipe (26) is connected to the initial rain outlet chamber (30).

3. The diversion type drainage interception well according to claim 1 is characterized in that: The second linkage mechanism further comprises a telescopic sleeve (35), and the portions of the second linkage rod (23) located in the overflow chamber (11) and the initial rain chamber (10) are respectively sleeved with the telescopic sleeve (35).

4. The diversion type drainage interception well according to claim 2 is characterized in that: A sedimentation plate (36) perpendicular to the transverse partition plate (6) is provided in the initial rainwater outlet chamber (30).

5. The diversion-type drainage interception well according to any one of claims 1 to 4, characterized in that: The lower end of the bottom wall of the water inlet chamber (8) is recessed downwards and is provided with a sedimentation tank (37).

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