Double - layer inverted siphon for preventing siltation of rural sewage

Abstract

The present invention discloses an anti-siltation double-inverted siphon pipe for rural sewage, which includes a pipe connecting an upstream intake well and a downstream outlet well. The pipe is composed of an outer pipe and an inner pipe. A circle of clamping grooves are respectively formed on the outer walls of the upstream intake well and the downstream outlet well around the outside of the outer pipe. Both ends of the inner pipe are fixedly connected with rotating mechanisms respectively. The rotating mechanism includes a ring, and the inner side of the ring is fixedly connected with the inner wall of the inner pipe through a fixing member. A number of arms extend out from the outer side of the ring, and rolling mechanisms are arranged at the ends of the arms far away from the ring. The rolling mechanism includes rollers that are in rolling connection with the clamping grooves. The rollers are rotatably connected with a roller frame through roller shafts, and the roller frame is fixedly connected with the arms. With the cooperation of the rotating mechanism and the rolling mechanism, the driving device can drive the inner pipe to rotate around the axis at a certain speed, solving the problem of easy siltation of the inverted siphon pipe for rural sewage under the conditions of avoiding difficult operation and maintenance, unable to reduce the pipe diameter, and unable to increase the pipe slope.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage pipelines, and particularly to a double-layer inverted siphon for preventing siltation of rural sewage. Background Art

[0002] When rural sewage pipelines cross rivers, inverted siphons are generally used. One of the characteristics of rural sewage is unstable water volume. When the water volume is small, siltation often occurs in the inverted siphon due to insufficient flow velocity, affecting the normal use of the pipeline. Therefore, how to avoid siltation in the inverted siphon has also become an important part of the rural sewage project.

[0003] In recent years, for rural sewage projects, in order to prevent siltation in the inverted siphon, measures such as increasing the frequency of maintenance and dredging, reducing the pipe diameter, or increasing the slope are usually adopted. Increasing the maintenance frequency is through management means. However, the management force in rural areas is relatively weak, and it is difficult to maintain long-term investment in personnel or funds. Although reducing the pipe diameter has a certain effect on increasing the flow velocity, the pipe diameter in rural areas is already relatively small, and sometimes the smallest specified pipe diameter of the sewage pipeline has been used. Moreover, reducing the diameter is only effective for small flows. When encountering large flows, the flow capacity will be insufficient, and the problem of flow fluctuation cannot be solved. Increasing the slope will increase the burial depth of the downstream pipeline, increasing the cost and construction difficulty. Especially in rural areas where the road width is narrow, the pipeline burial depth usually cannot be too deep.

[0004] Therefore, the technical personnel in this technical field are committed to developing a double-layer inverted siphon for preventing siltation of rural sewage to solve the problem of easy siltation of rural sewage inverted siphons under the conditions of avoiding difficult operation and maintenance, inability to reduce the pipe diameter, and inability to increase the pipeline slope. Summary of the Invention

[0005] In view of the above-mentioned defects of the prior art, the technical object of the present invention is to provide a double-layer inverted siphon for preventing siltation of rural sewage to solve the problem of easy siltation of rural sewage inverted siphons under the conditions of avoiding difficult operation and maintenance, inability to reduce the pipe diameter, and inability to increase the pipeline slope.

[0006] To achieve the above technical objectives, the present invention provides an anti-silting double siphon pipe for rural sewage, which includes a pipe connecting an upstream inlet well and a downstream outlet well. The pipe is composed of an outer pipe and an inner pipe. A circle of card slots is respectively opened on the outer walls of the upstream inlet well and the downstream outlet well around the outside of the outer pipe. Both ends of the inner pipe are fixedly connected with rotating mechanisms respectively. The rotating mechanism includes a ring. The inner side of the ring is fixedly connected with the inner wall of the inner pipe through a fixing member. A number of arms extend out from the outer side of the ring, and a rolling mechanism is arranged at the end of the arm far away from the ring. The rolling mechanism includes a roller that is in rolling connection with the card slot. The roller is rotatably connected with a roller frame through a roller shaft, and the roller frame is fixedly connected with the arm. Among them, a driving device is arranged on one of the rolling mechanisms at the upstream end of the inner pipe to drive the rolling mechanism to rotate so that the inner pipe rotates around its axis.

[0007] Preferably, the number of the arms is at least three, and the included angles between adjacent arms are the same.

[0008] Preferably, the driving device is fixedly connected with the roller frame, and a protective housing is arranged outside the driving device.

[0009] Preferably, rotary seals are respectively arranged between the inner sides of both ends of the outer pipe and the inner pipe to seal the gap between the outer pipe and the inner pipe.

[0010] Preferably, the fixing member is fixedly connected with the inner wall of the inner pipe through bolts and water-stop washers.

[0011] Preferably, the driving device is a motor.

[0012] Preferably, the gap between the outer pipe and the inner pipe is filled with a flowing liquid to support the inner pipe.

[0013] Preferably, the flowing liquid is liquid water.

[0014] Advantages of the present invention:

[0015] Due to the above structural design of the present invention, with the cooperation of the rotating mechanism and the rolling mechanism, the driving device can drive the inner pipe to rotate axially at a certain speed, and the water flow in the inner pipe is also in a state of rotating forward relative to the inner pipe, thereby avoiding siltation in the inner pipe.

[0016] Furthermore, the buoyancy provided by the water layer between the outer pipe and the inner pipe plays a role in supporting the inner pipe. Instead of using a mechanical method for support but using hydraulic power, the friction is also minimized as much as possible, saving the power consumption of the driving device.

[0017] In summary, the present invention solves the problem of easy siltation in rural sewage inverted siphons under the circumstances of avoiding difficult operation and maintenance, inability to reduce the pipe diameter, and inability to increase the pipe slope. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the whole of the present invention;

[0019] Figure 2 is a schematic structural diagram of the upstream water outlet well part of the present invention;

[0020] Figure 3 is a schematic structural diagram of the middle and downstream water outlet well part of the present invention;

[0021] Figure 4 is a schematic structural diagram of the rotating mechanism of the present invention;

[0022] Figure 5 is a schematic structural diagram of the rolling mechanism of the present invention;

[0023] Figure 6 is Figure 5 the schematic cross-sectional structure diagram at A-A in

[0024] Figure 7 is Figure 5 the schematic cross-sectional structure diagram at B-B in

[0025] Figure 8 is a schematic structural diagram of the outer pipe and inner pipe parts of the present invention;

[0026] Figure 9 is a schematic diagram of the state of adjusting the clear water level of the present invention.

[0027] In the figure: 1 upstream water inlet well, 2 downstream water outlet well, 3 outer pipe, 4 inner pipe, 5 card slot, 6 rotating mechanism, 61 ring, 62 fixing part, 63 support arm, 7 rolling mechanism, 71 roller, 72 roller frame, 73 roller shaft, 8 driving device, 9 protective housing, 10 rigid water pipe, 11 rotary seal ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will further illustrate the concept, specific structure and technical effects generated by the present invention with reference to the drawings, so as to fully understand the purpose, features and effects of the present invention.

[0029] Embodiment:

[0030] As Figures 1-3As shown in the figure, the anti-silting double siphon pipe for rural sewage includes an upstream intake well 1, a downstream outlet well 2, and a pipe connecting the upstream intake well 1 and the downstream outlet well 2. The pipe is composed of an outer pipe 3 and an inner pipe 4. The outer pipe 3 has a relatively thick wall and is buried and fixed in the soil under the river channel, and needs to independently bear the earth pressure and water pressure loads. The inner pipe 4 has a relatively thin wall and is relatively light in weight, which is convenient for rotation.

[0031] Around the outer side of the outer pipe 3 on the outer walls of the upstream intake well 1 and the downstream outlet well 2, a circle of clamping grooves 5 are respectively opened. Both ends of the inner pipe 4 are fixedly connected with rotating mechanisms 6. The outer ends of the rotating mechanisms 6 are provided with rolling mechanisms 7 that are in rolling connection with the clamping grooves 5. Among them, on one of the rolling mechanisms 7 at the upstream end of the inner pipe 4, a driving device 8 is provided to drive the rolling mechanism 7 to rotate, so that the inner pipe 2 rotates axially.

[0032] The main innovation of the present invention is that after the driving device 8 is started, it can drive the inner pipe 4 to rotate axially, so that the water flow in the inner pipe 4 can rotate and move forward, thereby avoiding siltation.

[0033] As Figure 4 shown, in a specific embodiment, the rotating mechanism 6 includes a circular ring 61. The inner side of the circular ring 61 is fixedly connected to the inner wall of the inner pipe 4 through three fixing members 62, and the outer side extends out three support arms 63. The included angle between the three support arms 63 is 120 degrees. A rolling mechanism 7 is provided at the end of the support arm 63 away from the circular ring 61.

[0034] As Figure 5 、 Figure 6 and Figure 7 shown, the rolling mechanism 7 includes a roller 71 that is in rolling connection with the clamping groove 5. The roller 71 is rotatably connected to a roller frame 72 through a roller shaft 73, and the roller frame 72 is fixedly connected to the support arm 63.

[0035] As Figure 5 、 Figure 6 shown, the driving device 8 is fixedly connected to the roller frame 72, and a protective housing 9 is provided outside the driving device 8. The driving device 8 is a motor, the output shaft of the motor is coaxial with the roller shaft 73, and the motor is connected to the power supply through an external power supply wire and is provided with an opening and closing switch.

[0036] Specifically, the power supply wire can adopt a exposed wire and leave a certain length surplus, which can be used for rotating 2 circles or several circles without being tightened. At the same time, an operation program (the chip is placed in the protective housing) is set to rotate one circle clockwise and one circle counterclockwise (of course, it can also be other numbers of circles) alternately. In this way, after the power supply wire rotates one round (one round clockwise and one round counterclockwise) of the rolling mechanism 7, it will return to its original position and will not form a winding along one direction.

[0037] As Figure 4As shown, in some embodiments, the fixing member 62 is fixed to the inner wall of the inner tube 4 with bolts and water-stop washers; in the figure, the fixing member 62 is in a flat and unfolded state, and in actual application, it is folded inward along the dotted line direction and attached to the inner wall of the inner tube 4.

[0038] As Figure 8 , Figure 9 shown, in some other embodiments, the gap between the outer tube 3 and the inner tube 4 can be filled with some clear water through a rigid water pipe 10. Tap water can be used. The main function is to lift the inner tube 4 by the buoyancy force to avoid the sinking deformation of the middle section of the inner tube 4 caused by the long distance. Rotating sealing rings 11 are provided on the inner sides of the upstream end and the downstream end of the inner tube 4 and the outer tube 3 respectively to prevent the clear water from leaking. The inner tube 4 and the outer tube 3 are fixedly supported at the upstream end and the downstream end and will not deform or displace.

[0039] If it is necessary to adjust the buoyancy, the clear water between the inner tube 4 and the outer tube 3 is replenished or drained. At this time, the rigid water pipe 10 can be squeezed into the contact position between the rotating sealing ring 11 and the inner tube 4 to make it insert through the rotating sealing ring 11 for replenishing or draining water. After completion, the rigid water pipe 10 is pulled out.

[0040] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. Anti-silt double siphon pipe for rural sewage, comprising a pipe connecting an upstream inlet well and a downstream outlet well, and the pipe is composed of an outer pipe and an inner pipe; characterized in that: A circle of clamping grooves are respectively formed on the outer walls of the upstream inlet well and the downstream outlet well around the outside of the outer pipe; both ends of the inner pipe are respectively fixedly connected with rotating mechanisms; The rotating mechanism includes a ring, and the inner side of the ring is fixedly connected with the inner wall of the inner pipe through a fixing member; several arms extend out of the outer side of the ring, and a rolling mechanism is arranged at the end of the arm far away from the ring; the rolling mechanism includes a roller rollingly connected with the clamping groove, the roller is rotationally connected with a roller frame through a roller shaft, and the roller frame is fixedly connected with the arm; A driving device is arranged on one of the rolling mechanisms at the upstream end of the inner pipe; used to drive the rolling mechanism to rotate, so that the inner pipe rotates around the axis.

2. The anti-silting double siphon pipe for rural sewage according to claim 1, characterized in that: The number of the arms is at least three, and the included angles between adjacent arms are the same.

3. The anti-silting double inverted siphon for rural sewage according to claim 1, wherein: The driving device is fixedly connected with the roller frame, and a protective housing is arranged outside the driving device.

4. The anti-silting double siphon pipe for rural sewage according to claim 1, characterized in that: Rotating sealing rings are respectively arranged between the inner sides of both ends of the outer pipe and the inner pipe, for sealing the gap between the outer pipe and the inner pipe.

5. The anti-siltation double inverted siphon for rural sewage according to claim 1, characterized in that: The fixing member is fixedly connected with the inner wall of the inner pipe through bolts and water-stop washers.

6. The anti-silting double inverted siphon for rural sewage according to claim 1, wherein: The driving device is an electric motor.

7. The anti-silting double inverted siphon for rural sewage according to claim 1, characterized in that: The gap between the outer pipe and the inner pipe is filled with a flowing liquid, for supporting the inner pipe.

8. The anti-silting double siphon pipe for rural sewage according to claim 7, characterized in that: The flowing liquid is liquid water.

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