Initial rainwater self-spinning desanding device

Abstract

The utility model relates to the technical field of sewage purification treatment, and discloses an initial rainwater self-spinning flow desanding device which specifically comprises an initial separation structure and a self-spinning flow desanding structure, the initial separation structure comprises a shell I, a water inlet pipe, a connecting pipe, an intercepting plate and a sand setting area I; and the self-spinning sand removal structure comprises a shell II, an outer interlayer round pipe, an inner interlayer round pipe, a horn mouth, a sand removal area II, an inflow type cyclone, an outflow type cyclone and a water outlet pipe. According to the initial rainwater self-rotating flow desanding device, the flow-in type cyclone and the flow-out type cyclone are designed to change the flow line of initial rainwater, and meanwhile, two rotational flow areas, namely an outer rotating area and an inner rotating area, are arranged, so that the sand setting effect is improved in the initial rainwater rotational flow process; floating objects can be temporarily stored at the upper part of the rotational flow area, and sediments in the sand setting area can be pumped and transported outwards through the sand removing area, so that the interior of the device is convenient to clean; the initial rainwater self-spinning desanding device integrates all functional areas, and is simple in structure and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage purification and treatment, in particular to an initial rainwater whirl flow sand removal device. Background Art

[0002] Initial rainwater refers to precipitation that is 10-15mm thick on the ground and has formed surface runoff. The prior art discloses some solutions for treating initial rainwater, such as a rainwater treatment device disclosed in the authorized patent with application number CN202220703348.7. When in use, this solution uses filter cloth to filter the initial rainwater. However, in actual use, since the rainwater directly enters the processor, the denser impurities intercepted by the filter cloth in the rainwater will settle and stick to the filter cloth, making the filter cloth prone to clogging, affecting the rainwater filtration efficiency. In addition, the silt intercepted by the filter cloth needs to be cleaned carefully to avoid damaging the filter cloth, which affects the silt cleaning efficiency. For example, the patent application number is CN202220703348.7. It is a rainwater treatment well disclosed by the authorized patent CN202223187032.6. When in use, this solution increases the cyclone speed of rainwater and speeds up the separation of rainwater and impurities through a cyclone. However, since a filter screen is used inside to separate impurities with low density and large volume from impurities with high density and small volume, large particles of impurities in the rainwater are at risk of clogging the filter screen or the cyclone, and large impurities will intercept small impurities, so that large impurities contain impurities with high density and small volume, affecting the cleaning of impurities on the filter screen. Based on the above description, the present application proposes an initial rainwater self-spinning flow sand removal device. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model provides an initial rainwater cyclone flow sand removal device, which solves the problem proposed in the above background technology that the initial rainwater directly enters the device, the filter screen or cyclone is prone to clogging, affecting the rainwater treatment effect, and it is difficult to clean the filtered impurities.

[0004] The utility model provides the following technical solutions: an initial rainwater whirl flow sand removal device, comprising a primary separation structure and a whirl flow sand removal structure, the primary separation structure comprising a shell body, a water inlet pipe and a connecting pipe are symmetrically arranged on the shell body, an interception plate is fixed in the inner cavity of the shell body, the interception plate is located between the water inlet pipe and the connecting pipe, and a sand settling area is provided at the bottom of the inner cavity of the shell body;

[0005] The self-spinning flow sand removal structure includes a shell body 2, an outer interlayer circular tube is fixed in the middle of the inner cavity of the shell body 2, an inner interlayer circular tube is fixed in the middle of the inner cavity of the outer interlayer circular tube, a bell mouth is fixed at the bottom of the inner interlayer circular tube, and the bell mouth is located below the outer interlayer circular tube. The outer interlayer circular tube and the inner interlayer circular tube divide the inner cavity of the shell body 2 from the inside to the outside into a sand removal zone, an inner rotation zone and an outer rotation zone in sequence, an outflow type cyclone is fixed on one side of the outer rotation zone, the other end of the connecting pipe is connected to the liquid inlet end of the outflow type cyclone, an inflow type cyclone is fixed on the side of the inner rotation zone away from the outflow type cyclone, an outlet pipe is fixed on the discharge end of the inflow type cyclone, and the other end of the outlet pipe extends to the outside of the shell body 2, and a sand settling zone 2 is provided at the bottom of the inner cavity of the shell body 2.

[0006] Preferably, the water inlet pipe and the connecting pipe are both located in the middle of the intercepting plate; the outflow type cyclone and the inflow type cyclone are both located in the upper part of the second shell, and the sand removal area is placed directly above the second sand settling area; the water outlet pipe and the connecting pipe are symmetrically arranged on the second shell.

[0007] Preferably, the intercepting plate is an arc-shaped structure, and the side of the intercepting plate away from the connecting pipe is in a state of protruding outward.

[0008] Preferably, the outflow type cyclone is fixedly connected to the inner wall of the second shell and the outer wall of the outer barrier tube, and the inflow type cyclone is fixedly connected to the inner wall of the outer barrier tube and the outer wall of the inner barrier tube.

[0009] Preferably, the initial rainwater in the outer rotation zone swirls downward in a counterclockwise streamline; the initial rainwater in the inner rotation zone swirls upward in a counterclockwise streamline.

[0010] Preferably, the outer interlayer circular tube and the inner interlayer circular tube are designed with the same height, and there is a smooth transition between the bell mouth and the inner interlayer circular tube. The outer diameter of one end of the bell mouth connected to the inner interlayer circular tube is smaller than the outer diameter of the other end, and the outer diameter of the bell mouth is smaller than the inner diameter of the outer interlayer circular tube. The bell mouth is located above the second sand settling area.

[0011] Preferably, the sand settling area 1 and the sand settling area 2 are both truncated cone-shaped.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The initial rainwater self-spinning flow sand removal device is designed with an inflow cyclone and an outflow cyclone to change the streamline of the initial rainwater. At the same time, two cyclone zones, an outer cyclone zone and an inner cyclone zone, are provided to improve the sand settling effect of the initial rainwater cyclone process. The upper parts of the inner cyclone zone and the outer cyclone zone can temporarily store floating objects, and the sediment in the sand settling zone can be sucked out through the sand removal zone, which is convenient for cleaning inside the device. The initial rainwater self-spinning flow sand removal device integrates various functional zones, has a simple structure, and is easy to operate.

[0014] 2. The initial rainwater spin flow sand removal device can achieve the initial solid-liquid separation of the initial rainwater to be treated through the setting of the initial separation structure, avoiding the clogging of the spin flow sand removal structure by large particles of impurities in the initial rainwater, which is convenient for the use of the device. The initial separation structure can store a part of the rainwater, so that the amount of water entering the spin flow sand removal structure is stable, so that the spin flow sand removal structure can operate stably, thereby ensuring the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the structure of the utility model;

[0016] Figure 2 It is a top view schematic diagram of the structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the connection between the inner interlayer circular tube and the inflow type cyclone of the utility model structure.

[0018] In the figure: 1. Shell 2; 2. External rotation zone; 3. Internal rotation zone; 4. Sand removal zone; 5. Sand settling zone 2; 6. Outflow type cyclone; 7. Bell mouth; 8. Connecting pipe; 9. Water outlet pipe; 10. External interlayer circular tube; 11. Shell 1; 12. Interceptor plate; 13. Water inlet pipe; 14. Sand settling zone 1; 15. Inflow type cyclone; 16. Internal interlayer circular tube. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The present application proposes an initial rainwater spin flow sand removal device, including a primary separation structure and a spin flow sand removal structure. The primary separation structure includes a shell 11, a water inlet pipe 13 is provided on one side of the upper part of the shell 11, and a connecting pipe 8 is provided on the other side of the upper part of the shell 11. The water inlet pipe 13 and the connecting pipe 8 are symmetrically arranged on the shell 11. Through the arrangement of the water inlet pipe 13, when the device is in use, the initial rainwater to be treated can enter the primary separation structure through the water inlet pipe 13.

[0021] An interception plate 12 is fixed in the inner cavity of the primary separation structure. The interception plate 12 is located between the water inlet pipe 13 and the connecting pipe 8. The water inlet pipe 13 and the connecting pipe 8 are both located in the middle of the interception plate 12. The interception plate 12 is an arc-shaped structure, and the side of the interception plate 12 away from the connecting pipe 8 is in a state of bulging outward. Through the setting of the interception plate 12, the water sprayed from the outlet end of the water inlet pipe 13 can be sprayed onto the interception plate 12, and the interception plate 12 intercepts large particles of impurities in the water, thereby realizing the primary separation of water and impurities, and under the action of gravity, the large particles of impurities can slide down along the interception plate 12.

[0022] A sand settling area 14 is provided at the bottom of the inner cavity of the shell 11. The sand settling area 14 is a frustum-shaped cone. Large impurities that have been separated can be gathered in the sand settling area 14, which is convenient for cleaning the large impurities.

[0023] From the above description of the initial separation structure, it can be seen that the initial rainwater flowing in the water inlet pipe 13 can be sprayed onto the interception plate 12, changing the flow direction of the water so that the impurities and water can be initially separated. The separated impurities can fall into the sand settling area 14, which is convenient for the unified treatment of the impurities. The water that has been initially filtered can be discharged through the connecting pipe 8, and the floating objects in the water can be temporarily stored above the interception plate 12.

[0024] The self-spinning flow sand removal structure includes a shell 1, an outer interlayer circular tube 10 is fixed in the middle of the inner cavity of the shell 1, and an inner interlayer circular tube 16 is fixed in the middle of the inner cavity of the outer interlayer circular tube 10. The outer interlayer circular tube 10 and the inner interlayer circular tube 16 are designed to be of equal height. The outer interlayer circular tube 10 and the inner interlayer circular tube 16 divide the inner cavity of the shell 1 from the inside to the outside into a sand removal area 4, an inner rotation area 3 and an outer rotation area 2. A sand settling area 5 is provided at the bottom of the inner cavity of the shell 1, and the sand removal area 4 is placed directly above the sand settling area 5. The sand settling area 5 is a truncated cone. The sand settling area 5 can collect impurities. The impurities in the sand settling area 5 can be sucked out by using suction equipment, such as a sewage pump, to facilitate the cleaning of impurities.

[0025] An outflow type cyclone 6 is fixed on one side of the outer cyclone zone 2. The outflow type cyclone 6 is placed on the upper part of the outer cyclone zone 2. The other end of the connecting pipe 8 is connected to the liquid inlet end of the outflow type cyclone 6. The outflow type cyclone 6 is fixedly connected to the inner wall of the shell 1 and the outer wall of the outer barrier tube 10. By setting the outflow type cyclone 6, the flow direction and flow rate of the rainwater entering the outer cyclone zone 2 can be changed. The rainwater can swirl in the outer cyclone zone 2, and the initial rainwater in the outer cyclone zone 2 swirls downward in a counterclockwise streamline. During the swirl process of the rainwater, impurities such as mud and sand in the rainwater can be separated from the rainwater under the action of centrifugal force.

[0026] The lower part of the outer rotation zone 2 is connected to the inner rotation zone 3, and a bell mouth 7 is fixed at the bottom of the inner interlayer circular tube 16, and the bell mouth 7 is located below the outer interlayer circular tube 10. There is a smooth transition between the bell mouth 7 and the inner interlayer circular tube 16. The outer diameter of the end of the bell mouth 7 away from the inner interlayer circular tube 16 is larger than the outer diameter of the inner interlayer circular tube 16, and the outer diameter of the end of the bell mouth 7 connected to the inner interlayer circular tube 16 is smaller than the outer diameter of the other end, and the outer diameter of the bell mouth 7 is smaller than the inner diameter of the outer interlayer circular tube 10. The bell mouth 7 is located above the sand settling zone 2 5. Through the setting of the bell mouth 7, the bell mouth 7 can guide the initial rainwater of the outer rotation zone 2 to the inner rotation zone 3, and the initial rainwater of the inner rotation zone 3 swirls upward in a counterclockwise streamline, and the swirling particles in the inner rotation zone 3 flow evenly to the sand settling zone 2 5 through the bell mouth 7.

[0027] An inflow type cyclone 15 is provided at the upper part of the inner swirling zone 3, and the inflow type cyclone 15 is fixedly connected to the inner wall of the outer interlayer circular tube 10 and the outer wall of the inner interlayer circular tube 16, and the inflow type cyclone 15 is located on the side of the inner swirling zone 3 away from the outflow type cyclone 6. The filtered rainwater in the inner swirling zone 3 can enter the inner cavity of the inflow type cyclone 15 through the liquid inlet end of the inflow type cyclone 15. An outlet pipe 9 is fixed to the liquid outlet end of the inflow type cyclone 15, and the other end of the outlet pipe 9 extends to the outside of the shell 2 1. The filtered rainwater can be discharged through the outlet pipe 9, and the outlet pipe 9 and the connecting pipe 8 are symmetrically arranged on the shell 2 1.

[0028] In summary, when the initial rainwater self-spinning flow sand removal device proposed in the present application is in use, the initial rainwater enters the inner cavity of the shell 11 through the water inlet pipe 13, and the rainwater sprayed from the water inlet pipe 13 can be sprayed onto the interception plate 12. The interception plate 12 intercepts impurities in the rainwater to achieve preliminary separation of impurities and rainwater. The separated impurities are gathered in the sand settling area 14. The rainwater that has been initially filtered enters the inner cavity of the outflow type cyclone 6 through the connecting pipe 8. The streamline of the rainwater discharged from the outflow type cyclone 6 changes, and the rainwater in the outer rotation area 2 passes through the outer rotation area 2 in a counterclockwise downward rotation form, and then rotates downward to the bell mouth 7 and is guided to the inner rotation area 3. The rainwater then rotates upward in a counterclockwise form. During the swirling process of the rainwater, impurities such as mud and sand in the rainwater are separated from the rainwater, and the separated impurities are gathered in the sand settling area 5. The rainwater after mud and sand separation rotates into the inflow type cyclone 15 and is discharged through the outlet pipe 9. The initial rainwater swirls in the outer rotation zone 2 and the inner rotation zone 3 in a counterclockwise streamline, accelerating the separation of rainwater and mud and sand; the mud and sand in the outer rotation zone 2 and the inner rotation zone 3 are deposited in the sand settling zone 2 5, and then sucked out by the sand removal zone 4 and transported out for disposal.

[0029] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. An initial rainwater spin flow sand removal device, comprising a primary separation structure and a spin flow sand removal structure, characterized in that: The primary separation structure comprises a shell (11), on which a water inlet pipe (13) and a connecting pipe (8) are symmetrically arranged, an interception plate (12) is fixed in the inner cavity of the shell (11), and the interception plate (12) is located between the water inlet pipe (13) and the connecting pipe (8), and a sand settling area (14) is provided at the bottom of the inner cavity of the shell (11); The spin flow sand removal structure comprises a second shell (1), an outer interlayer circular tube (10) is fixed in the middle of the inner cavity of the second shell (1), an inner interlayer circular tube (16) is fixed in the middle of the inner cavity of the outer interlayer circular tube (10), a bell mouth (7) is fixed at the bottom of the inner interlayer circular tube (16), the bell mouth (7) is located below the outer interlayer circular tube (10), and the outer interlayer circular tube (10) and the inner interlayer circular tube (16) divide the inner cavity of the second shell (1) into a sand removal area (4), an inner spin area (3) and a second spin area (4) from the inside to the outside. ) and an outer swirling zone (2), an outflow type cyclone (6) is fixed on one side of the outer swirling zone (2), the other end of the connecting pipe (8) is connected to the liquid inlet end of the outflow type cyclone (6), an inflow type cyclone (15) is fixed on the side of the inner swirling zone (3) away from the outflow type cyclone (6), an outlet pipe (9) is fixed to the liquid discharge end of the inflow type cyclone (15), the other end of the outlet pipe (9) extends to the outside of the second shell (1), and a sand settling zone (5) is provided at the bottom of the inner cavity of the second shell (1).

2. The initial rainwater swirl flow sand removal device according to claim 1, characterized in that: The water inlet pipe (13) and the connecting pipe (8) are both located in the middle of the interception plate (12); the outflow type cyclone (6) and the inflow type cyclone (15) are both located in the upper part of the second shell (1); the sand removal area (4) is placed directly above the second sand settling area (5); the water outlet pipe (9) and the connecting pipe (8) are symmetrically arranged on the second shell (1).

3. The initial rainwater swirl flow sand removal device according to claim 1, characterized in that: The intercepting plate (12) is an arc-shaped structure, and the side of the intercepting plate (12) away from the connecting pipe (8) is in a state of protruding outwards.

4. The initial rainwater whirl flow sand removal device according to claim 1 is characterized by: The outflow type cyclone (6) is fixedly connected to the inner wall of the second shell (1) and the outer wall of the outer barrier layer circular tube (10), and the inflow type cyclone (15) is fixedly connected to the inner wall of the outer barrier layer circular tube (10) and the outer wall of the inner barrier layer circular tube (16).

5. The initial rainwater swirl flow sand removal device according to claim 1, characterized in that: The initial rainwater in the outer rotation zone (2) swirls downward in a counterclockwise streamline; the initial rainwater in the inner rotation zone (3) swirls upward in a counterclockwise streamline.

6. The initial rainwater whirl flow sand removal device according to claim 1, characterized in that: The outer interlayer circular tube (10) and the inner interlayer circular tube (16) are designed to be of equal height, and there is a smooth transition between the bell mouth (7) and the inner interlayer circular tube (16). The outer diameter of one end of the bell mouth (7) connected to the inner interlayer circular tube (16) is smaller than the outer diameter of the other end thereof, and the outer diameter of the bell mouth (7) is smaller than the inner diameter of the outer interlayer circular tube (10), and the bell mouth (7) is located above the second sand settling area (5).

7. The initial rainwater whirl flow sand removal device according to claim 1 is characterized by: The sand settling area 1 (14) and the sand settling area 2 (5) are both truncated cone shaped.

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