CN210066889U - Outlet device for vertical shaft of underwater water outlet of low-pressure water delivery pipeline - Google Patents

Abstract

The utility model provides a low pressure conduit outlet shaft outlet device under water, relates to the hydraulic facilities, includes the shaft of a bottom shutoff, sets up one in shaft one side and holds conduit male mounting hole, its characterized in that, conduit end is equipped with the shutoff board, shutoff board and conduit end all are equipped with a plurality of spillway holes, are equipped with out the water grid at the vertical shaft mouth. The utility model discloses not only utilize spillway hole, shaft integrated design to realize the step-down control to rivers, still utilize pressure expansion mechanism and venturi effect to further reduce the fountain effect that rivers impact caused.

Description

A low-pressure water pipeline underwater water outlet vertical shaft outlet device

technical field

The utility model relates to the technical field of water conservancy facilities, in particular to a vertical shaft outlet device for an underwater water outlet of a low-pressure water conveying pipeline.

Background technique

In order to maintain the low-speed flow (activity) of the water in the landscape river or landscape pool, form a slow flow, purify the water quality and improve its ornamental value, it is often necessary to add additional water sources. Generally, several low-pressure water pipeline outlets are added underwater at the bottom of the landscape river or landscape pool to maintain the activity of the water to form a slow flow, purify the water quality, and enhance the ornamental and aesthetic feeling of the scenic waters.

However, in practical applications, fountains often occur at the outlet of the supplementary source low-pressure water transmission pipeline. At this time, the water flow velocity of the supplementary source water outlet has a large fluctuation on the water surface in the water area, and it is not possible to reach the static surface of the water surface. moving aesthetic effect. On the other hand, the design form of the shaft outlet set in the existing water outlet is open, and its antifouling effect and the effect of reducing the flow velocity of the water flow are not ideal.

Utility model content

In order to solve the phenomenon that in landscape rivers or landscape pools, the water flow velocity at the outlet of the low-pressure water-conveying pipeline of the supplementary water source causes large fluctuations on the landscape water surface and the effect of blocking the pollution at the shaft outlet is poor, the utility model provides an underwater outlet of a low-pressure water-conveying pipeline. The water outlet shaft outlet device can avoid the occurrence of the above problems.

The technical scheme adopted by the utility model to solve its technical problems is:

The utility model relates to a vertical shaft outlet device for an underwater water outlet of a low-pressure water delivery pipeline, comprising a vertical shaft with a bottom blocked, a mounting hole for accommodating the insertion of a water delivery pipeline is provided on one side of the vertical shaft, and a blocking plate is provided at the end of the water delivery pipeline, The blocking plate and the end of the water conveying pipeline are provided with a number of overflow holes, and a water outlet grille is provided at the head of the vertical well. The utility model utilizes the combined design of the overflow hole and the vertical shaft, realizes the rapid reduction of water pressure, converts turbulent flow into turbulent flow, reduces the fountain effect on the water surface, and at the same time plays the role of blocking the pollution at the shaft outlet.

Further, the water outlet grille is provided with multiple groups of parallel pressure expansion mechanisms, the pressure expansion mechanism includes a first shaft and a second shaft, a number of upper plates are installed on the first shaft, and a number of upper plates are installed on the second shaft. Several lower plates, the upper plate and the lower plate are arranged at intervals, and a middle arm rod is installed between the first shaft and the second shaft, and the upper plate and the lower plate are in contact with the middle arm bar and are located on the upper side of the middle arm bar . Through the design of the pressure deployment mechanism, the relationship between the dead weight of the upper plate and the lower plate and the water pressure can be used to solve the fountain phenomenon existing in the prior art. When the water pressure is too large, the upper plate and the lower plate are lifted up by the water pressure, and the water flow is guided by the upper plate and the lower plate while reducing the water pressure.

Further, water discharge fluff is installed in the gap between the adjacent upper plates or the adjacent lower plates. When the water pressure is small, it can pass directly through the water discharge fluff to avoid affecting the water surface

Further, each of the two side walls of the vertical shaft is installed with a fixed plate, and a first shaft or a second shaft is respectively installed on the two fixed plates.

Further, a second shaft is installed on the fixed plate, the second shaft is coaxial with the fixed plate, a fan-shaped limit groove is arranged on the fixed plate, and a rotating connecting rod is installed on the second shaft, the The rotating link moves back and forth in the sector limit slot. The fan-shaped limit slot is used to limit the rotation angle of the upper plate and the lower plate.

Further, the water outlet grille is a rectangular water outlet grille, and a rectangular installation slot is arranged in the middle of the rectangular water outlet grille, a plurality of intermediate shafts and lower support rods are arranged in the installation rectangular groove at intervals, and a swinging shaft is installed on the intermediate rotation shaft. plate.

Further, a plurality of water outlets are arranged on the upper side of the vertical shaft, and a plurality of installation shafts are installed on the water outlets in the vertical direction, and a connecting plate rotatable around the installation shaft is arranged on the installation shafts.

Further, a pressure-boosting reducing pipe is arranged in the middle of the water conveying pipe, the narrowest part of the pressure-boosting reducing pipe is connected with a negative pressure suction pipe, and the other end of the negative pressure suction pipe extends to the wellhead. The Venturi effect is used to reduce the water pressure at the head of the shaft.

Further, there are multiple negative pressure suction tubes.

Further, the water delivery pipeline is an elbow pipeline or a straight pipeline.

Beneficial effects: The utility model not only utilizes the combined design of the overflow hole and the vertical shaft to realize the depressurization control of the water flow, but also utilizes the pressure spreading mechanism and the Venturi effect to further reduce the fountain effect caused by the impact of the water flow.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

2 is a cross-sectional view of the first embodiment;

3 is a cross-sectional view of a second embodiment;

4 is a schematic structural diagram when a water outlet grill is added in the second embodiment;

Figure 5 is a top view of a circular water outlet grill;

Fig. 6 is the partial enlarged view of A place in Fig. 5;

Figure 7 is a schematic diagram of the principle of the pressure deployment mechanism;

Fig. 8 is a partial enlarged view at B in Fig. 7;

9 is a top view of a rectangular water outlet grill;

10 is a cross-sectional view of the third embodiment;

FIG. 11 is a cross-sectional view of the fourth embodiment.

In the picture: 1 shaft, 2 water pipeline, 21 elbow pipeline, 22 straight pipeline, 23 blocking plate, 24 overflow hole, 3 water outlet grille, 31 first shaft, 32 second shaft, 33 upper plate, 34 lower Plate, 35 water discharge fluff, 36 middle pole, 37 fixed plate, 371 fan-shaped limit groove, 321 rotating connecting rod, 300 rectangular water outlet grille, 301 intermediate shaft, 302 swing plate, 303 lower support rod, 4 water outlet, 41 Install the shaft, 42 connecting plates, 221 booster tube, 222 negative pressure suction tube.

Detailed ways

As shown in Figures 1 to 2, a low-pressure water pipeline underwater water outlet vertical shaft outlet device includes a vertical well 1 sealed at the bottom, and a mounting hole for accommodating the water delivery pipeline 2 is provided on one side of the vertical shaft. The gap between the installation hole and the water pipeline shall be blocked with anti-seepage material. The water delivery pipe 2 can be an elbow pipe 21 or a straight pipe 22 .

As shown in FIG. 2 , the end of the elbow pipe is provided with a blocking plate 23 , and both the blocking plate and the end of the elbow pipe are provided with a number of overflow holes 24 . The design of the overflow hole is convenient for the water flow to enter the shaft in the form of turbulent flow, and then flow out from the shaft to avoid the phenomenon that the water outlet of the shaft is easy to form a fountain. Figure 3 is a schematic diagram of the use of a straight pipeline, the principle is the same.

FIG. 4 is a schematic structural diagram of the utility model when the water outlet grille 3 is added. The reason why the water outlet grille is added is to reduce the influence of the water flow of the water delivery pipeline on the large fluctuation of the landscape water surface, and to solve the problem of poor pollution blocking effect at the shaft outlet at the same time. .

As shown in FIG. 5 to FIG. 8 , the water outlet grille 3 is provided with a plurality of sets of parallel pressure expansion mechanisms, and the pressure expansion mechanism includes a first shaft 31 and a second shaft 32 , wherein the first shaft is mounted with a A plurality of upper plates 33, a plurality of lower plates are installed on the second shaft, the upper plates and the lower plates are arranged at intervals, and water discharge fluff is installed in the gap between the adjacent upper plates or the adjacent lower plates, and the first shaft and the second A middle arm rod 36 is installed between the shafts, and the upper plate and the lower plate are in contact with the middle arm bar and are placed on the upper side of the middle arm bar.

In this way, when the water flow enters the shaft from the water pipeline, a large amount of turbulent water overflows from the overflow hole, and the water outlet grille on the upper side of the shaft is supported by the vertical upward water pressure, so that the upper plate and the lower plate are surrounded by the action of the water pressure. The first axis and the second axis rotate at a certain angle, and at the same time of decompression, the direction of the water flow changes, so as to avoid the fountain phenomenon caused by the direct flushing of the water surface.

The plan is refined, and the density of the material used for the upper and lower plates is greater than that of water.

If the water pressure is very small, a part of the water will flow out from the water discharge fluff, and at this time, the upper and lower plates are both pressed on the middle pole to prevent the water from flowing out from there.

The solution is further refined. As shown in FIG. 7 , a fixed plate 37 is installed on each of the two side walls of the shaft, and a first shaft or a second shaft is respectively installed on the two fixed plates.

In FIG. 8 , a second shaft 32 is installed on the fixed plate 37 , the second shaft is coaxial with the fixed plate, a fan-shaped limit groove 371 is formed on the fixed plate, and a rotating link 321 is installed on the second shaft , the rotating link moves back and forth in the fan-shaped limiting groove. The first axis is also the same as the second axis, and the limit setting is performed to prevent the first axis from turning too large an angle.

In this way, by limiting the angles of the first axis and the second axis, the expansion angle of the pressure expansion mechanism is prevented from being too large, and the water surface causes the fountain phenomenon. There is an overlap between the lower plates. Affects the opening or closing of the upper and lower plates under the action of water pressure.

The second embodiment is shown in FIG. 9 , the water outlet grille is a rectangular water outlet grille 300 , a rectangular installation groove is arranged in the middle of the rectangular water outlet grille, and a plurality of intermediate shafts 301 and lower supports are arranged in the installation rectangular groove at intervals. Rod 303, wherein a swinging plate 302 is installed on the intermediate shaft. The swinging plate can rotate the plate surface so that the water on the lower side of the shaft flows out to the outside world. When no water supply is required, the swinging plate can use its own weight to lean on the lower support rod to seal Shafts to prevent the entry of underwater sludge.

The third embodiment is shown in FIG. 10 , a plurality of water outlets 4 are provided on the upper side of the vertical shaft, and a plurality of installation shafts 41 are installed on the water outlets in the vertical direction. Connecting plate 42 .

When the water pipeline is transporting water, the water flows out from the overflow hole to the shaft, and several connecting plates on the inner wall of the shaft are under the action of the water flow, and the water flows out from the water outlet. Because the direction of the water flow is downward towards the water surface, it will not have a great impact on the water surface.

In the fourth embodiment, as shown in FIG. 11 , a pressure-boosting reducing pipe 221 is arranged in the middle of the straight pipe 22 , and a negative pressure suction pipe 222 is connected to the narrowest part of the pressure-boosting reducing pipe. The other end of the negative pressure suction pipe extends to the shaft mouth.

A plurality of the negative pressure suction tubes can be provided. The common Venturi effect is utilized here. In layman's terms, this effect means that a low pressure will be created near a fluid flowing at a high speed, resulting in adsorption. The water flow that originally had a low impact on the water surface is decompressed again to reduce the impact on the water surface.

Except for the technical features described in the specification, they are all known technologies by those skilled in the art.

Claims (10)

1. a low-pressure water pipeline underwater water outlet vertical shaft outlet device, comprising a bottom plugged shaft, and a mounting hole for accommodating water pipeline insertion is provided on one side of the vertical shaft, it is characterized in that the end of the water pipeline is A blocking plate is provided, the blocking plate and the end of the water pipeline are provided with a number of overflow holes, and a water outlet grille is provided at the mouth of the vertical well. 2 . The vertical shaft outlet device for the underwater water outlet of the low-pressure water pipeline according to claim 1 , wherein the water outlet grille is provided with a plurality of groups of parallel pressure deployment mechanisms, and the pressure deployment mechanisms include a first The shaft and the second shaft, a number of upper plates are installed on the first shaft, a number of lower plates are installed on the second shaft, the upper plate and the lower plate are arranged at intervals, and a middle arm is installed between the first shaft and the second shaft, The upper plate and the lower plate are in contact with the middle arm and are located on the upper side of the middle arm. 3 . The vertical shaft outlet device for the underwater water outlet of the low-pressure water conveying pipeline according to claim 2 , characterized in that a water discharge fluff is installed in the gap between the adjacent upper plates or the adjacent lower plates. 4 . 4. The vertical shaft outlet device of the underwater water outlet of the low-pressure water pipeline according to claim 2 or 3, wherein a fixed plate is installed on each of the two side walls of the vertical shaft, and two fixed plates are respectively installed on the two fixed plates. first or second axis. 5. The low-pressure water pipeline underwater water outlet vertical shaft outlet device according to claim 4, wherein a second shaft is installed on the fixed plate, and the second shaft is concentric with the fixed plate, and is fixed on the fixed plate. The disk is provided with a fan-shaped limiting slot, and a rotating connecting rod is installed on the second shaft, and the rotating connecting rod moves back and forth in the fan-shaped limiting slot. 6 . The vertical shaft outlet device for the underwater water outlet of the low-pressure water pipeline according to claim 1 , wherein the water outlet grille is a rectangular water outlet grille, and a rectangular slot for installation is provided in the middle of the rectangular water outlet grille. 7 . A plurality of intermediate rotation shafts and lower support rods are arranged in the installation rectangular groove at intervals, and a swing plate is installed on the intermediate rotation shaft. 7 . The vertical shaft outlet device for the underwater water outlet of the low-pressure water pipeline according to claim 1 , wherein a plurality of water outlets are arranged on the upper side of the shaft, and a plurality of installation shafts are installed in the vertical direction of the water outlet. 8 . , the mounting shaft is provided with a connecting plate that can rotate around the mounting shaft. 8. The low-pressure water pipeline underwater water outlet vertical shaft outlet device according to claim 1, wherein a pressure-boosting reducing pipe is provided in the middle of the water-conveying pipeline, and the narrowest part of the pressure-boosting reducing pipe is communicated with There is a negative pressure suction pipe, and the other end of the negative pressure suction pipe extends to the shaft mouth. 9 . The vertical shaft outlet device for the underwater water outlet of the low-pressure water pipeline according to claim 8 , wherein a plurality of the negative pressure suction pipes are provided. 10 . 10 . The low-pressure water delivery pipeline underwater water outlet vertical shaft outlet device according to claim 1 , wherein the water delivery pipeline is an elbow pipeline or a straight pipeline. 11 .

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