Static-pressure automatic sludge discharging device

Abstract

The utility model relates to the technical field of sludge discharge, and discloses a static pressure automatic sludge discharge device. Wherein a sludge collecting hopper is arranged at the bottom of the settling tank, so that settled sludge can be collected in a centralized manner. And a rotating mechanism is arranged in the sludge collecting hopper. The blades of the rotating mechanism are planar, and the axis direction of the blades is the same as that of the settling tank, so that the impact force of water flow injected from the water injection port on the blades can be reduced, the pressure of water in the settling tank on the blades is reduced, and the blades are prevented from being damaged. Meanwhile, the blocking range of the blades to the sludge discharge port can be reduced, and the cross sectional area of the sludge discharge port is prevented from being reduced, so that the sludge discharge port is prevented from being blocked to affect the sludge discharge efficiency. The sludge is stirred by the rotating motion of the blades, and the fluidity of the sludge is kept, so that the sludge is prevented from being gathered in the sludge collecting hopper, and the sludge is prevented from caking. And meanwhile, the continuous rotation of the blades can disperse the caked sludge and recover the fluidity of the sludge.

Description

Technical Field

[0001] This utility model relates to the technical field of sludge discharge, specifically to a static pressure automatic sludge discharge device. Background Technology

[0002] Static pressure sludge discharge, as a highly efficient sludge treatment method, is widely used in water conservancy projects, water treatment plants, and wastewater treatment plants. It utilizes the principle of static pressure to discharge sludge from a sedimentation tank to a sludge digestion tank. Under the influence of gravity, the sludge in the sedimentation tank gradually settles to the bottom. When the sludge accumulates to a certain concentration and quantity, the sludge discharge valve of the sedimentation tank is opened, connecting the sedimentation tank and the sludge digestion tank through a sludge discharge pipe. Under the influence of gravity, the sludge flows naturally into the sludge digestion tank through the sludge discharge pipe.

[0003] During the settling process, sludge gradually deposits at the bottom of the settling tank and accumulates, easily forming clumps that are large and hard. When the sludge discharge valve is opened, the sludge flows through the discharge port to the discharge pipe. However, due to the changes in the size and shape of the clumped sludge, it easily clogs the discharge port when it flows to it, thus affecting the normal discharge of sludge. Utility Model Content

[0004] The present invention aims to provide a static pressure automatic sludge discharge device that can avoid the problem of sludge clumping during the sedimentation process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] 1) A static pressure automatic sludge discharge device, comprising a sedimentation tank, wherein the top of the sedimentation tank is provided with a water inlet, the side wall of the sedimentation tank is provided with a water outlet, the water outlet is close to the top of the sedimentation tank, the bottom of the sedimentation tank is provided with a sludge collection hopper, the sludge collection hopper is provided with a rotating mechanism, the bottom of the sludge collection hopper is provided with a sludge discharge port, the sludge discharge port is provided with a first sludge discharge valve, and the sludge discharge port is connected to a sludge discharge main pipe.

[0007] In this invention, the sedimentation tank has a water inlet at the top to allow water to be injected into the tank from above. The downward pressure generated by the water flow promotes the rapid settling of sludge to the bottom of the tank. An outlet is located on the side wall of the sedimentation tank to maintain the liquid level and prevent overflow. A sludge collection hopper is located at the bottom of the tank to collect the settled sludge. A rotating mechanism inside the sludge collection hopper maintains the fluidity of the sludge through agitation, preventing sludge from accumulating and clumping.

[0008] Secondly, the sludge discharge port is located at the bottom of the sludge collection hopper. A first sludge discharge valve is installed inside the discharge port. When the first valve is opened, the sludge flows naturally to the discharge port under its own weight and the static pressure of the water, and is discharged through the discharge port. The discharge port is connected to the main sludge discharge pipe, facilitating the flow of sludge into subsequent treatment stages after it passes through the discharge port.

[0009] 2) According to the static pressure automatic sludge discharge device described in 1), wherein:

[0010] The rotating mechanism includes blades, which are planar and have the same axial direction as the sedimentation tank. A rotating shaft is fixedly connected to the center of the blades, and a servo motor is connected to the rotating shaft through the top surface of the sedimentation tank.

[0011] In this invention, the blades of the rotating mechanism are planar, and the blade axis is aligned with the axis of the sedimentation tank. This reduces the impact of the water flow at the inlet on the blades and decreases the pressure of the water inside the sedimentation tank on the blades, thus preventing blade damage. It also reduces the area of ​​the blades obstructing the sludge discharge port, preventing a reduction in the cross-sectional area of ​​the discharge port and thus avoiding blockages that could affect discharge efficiency.

[0012] In addition, a servo motor drives the rotating shaft to rotate, which in turn drives the blades to rotate. The rotation of the blades agitates the sludge, maintaining its fluidity and preventing it from accumulating in the sludge collection hopper, thus avoiding sludge clumping. At the same time, the continuous rotation of the blades can disperse any clumped sludge, restoring its fluidity.

[0013] 3) According to the static pressure automatic sludge discharge device described in 1), wherein:

[0014] The sludge discharge main pipe is equipped with a compressed air inlet, and the compressed air inlet is equipped with a one-way valve. The compressed air inlet is connected to a compressed air backflushing sludge discharge device through a hose.

[0015] This invention employs a D50 type compressed air backflushing sludge discharger. Compressed air is backflushed into the sludge discharge main pipe through the compressed air inlet. During this process, some compressed air enters the sedimentation tank through the sludge discharge port. The injection of compressed air causes vibration in the water flow within the sludge discharge main pipe and sedimentation tank, thereby causing the sludge adhering to the inner walls of the sludge discharge main pipe and sedimentation tank to detach, thus preventing the sludge adhering to the inner walls of the sludge discharge main pipe and sedimentation tank from affecting the sludge discharge effect. Furthermore, a one-way valve is installed in the compressed air inlet to prevent water from the sludge discharge main pipe from flowing into the compressed air backflushing sludge discharger.

[0016] 4) According to the static pressure automatic sludge discharge device described in 1), wherein:

[0017] The main sludge discharge pipe has several sludge discharge branch pipes evenly distributed along its axial direction, and each sludge discharge branch pipe is equipped with a second sludge discharge valve.

[0018] In this invention, the main sludge discharge pipe is connected to several branch sludge discharge pipes. When the main sludge discharge pipe becomes blocked, the corresponding second sludge discharge valve on each branch pipe can be opened, allowing the sludge to bypass the blocked pipe and continue flowing through the branch pipe, thus preventing the sludge discharge process from stalling. Furthermore, the branch pipes can operate simultaneously with the main sludge discharge pipe to discharge sludge together, thereby improving sludge discharge efficiency and flexibility.

[0019] 5) According to the static pressure automatic sludge discharge device described in 1), wherein:

[0020] The water inlet is connected to a water pipe that extends to the bottom of the sedimentation tank. The bottom of the extended water pipe is flush with the water outlet. The end of the water pipe facing the bottom of the sedimentation tank has a funnel-shaped opening that is closed at the bottom and open at the edges.

[0021] In this invention, the end of the water pipe facing the bottom of the sedimentation tank is provided with a funnel-shaped opening that is closed at the bottom and open at the edge. This reduces the flow velocity of the water when it is injected into the sedimentation tank, reduces the impact of the water flow on the sludge at the bottom of the sedimentation tank, prevents the sludge from being resuspended due to the impact of the water flow, and at the same time allows the water flow to spread evenly in the sedimentation tank, forming a stable hydrostatic pressure and improving the sedimentation efficiency of the sludge.

[0022] It can effectively slow down the water flow rate, reduce disturbance to the bottom sediment sludge, prevent the sludge from being resuspended due to water flow impact, and at the same time ensure that the water flow is evenly diffused in the tank, forming a stable hydrostatic pressure and improving the sedimentation effect of sludge.

[0023] 6) A static pressure automatic sludge discharge device according to 1), wherein:

[0024] The vertical cross-section of the sludge collecting hopper is an inverted trapezoid, and the side wall of the sludge collecting hopper is inclined at a 60-degree angle to the horizontal plane.

[0025] In this invention, the side wall of the sludge collecting hopper is inclined at a 60-degree angle to the horizontal plane. This allows the sludge in the hopper to gradually increase in speed as it is discharged through the sludge discharge port, thereby improving the efficiency of sludge discharge. At the same time, it allows the sludge to slide along the inner wall of the sludge collecting hopper towards the discharge port, thereby reducing friction between the sludge and the inner wall and preventing sludge from adhering to the inner wall of the sludge collecting hopper.

[0026] Compared with the prior art, this utility model also has the following technical effects:

[0027] In this invention, a sludge collection hopper is provided at the bottom of the sedimentation tank to collect the settled sludge. A rotating mechanism is installed inside the sludge collection hopper. The blades of the rotating mechanism are planar, and the blade axis is aligned with the axis of the sedimentation tank. This reduces the impact force of the water flow injected from the inlet on the blades and also reduces the pressure of the water inside the sedimentation tank on the blades, thus preventing blade damage. Simultaneously, it reduces the area of ​​the sludge discharge port obstructed by the blades, preventing a reduction in the cross-sectional area of ​​the discharge port and thus avoiding blockage, which would affect the efficiency of sludge discharge. The rotational motion of the blades agitates the sludge, maintaining its fluidity and preventing it from accumulating in the sludge collection hopper, thereby avoiding sludge clumping. Furthermore, the continuous rotation of the blades disperses any clumped sludge, restoring its fluidity. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a static pressure automatic mud removal device according to the present invention.

[0029] Figure 2 This is a cross-sectional view of the sedimentation tank in a static pressure automatic sludge discharge device according to this utility model. Detailed Implementation

[0030] The following detailed description illustrates the specific implementation method:

[0031] The reference numerals in the accompanying drawings include: sedimentation tank 1, water inlet 2, water outlet 3, sludge hopper 4, sludge discharge port 5, first sludge discharge valve 6, sludge discharge main pipe 7, blade 8, rotating shaft 9, servo motor 10, compressed air inlet 11, compressed air backflushing sludge discharge device 12, sludge discharge branch pipe 13, and second sludge discharge valve 14.

[0032] See the example. Figure 1 As shown in the figure, a static pressure automatic sludge discharge device in this embodiment includes a sedimentation tank 1, a water inlet 2 at the top of the sedimentation tank 1, a water outlet 3 on the side wall of the sedimentation tank 1, the water outlet 3 being close to the top of the sedimentation tank 1, a sludge collection hopper 4 at the bottom of the sedimentation tank 1, a rotating mechanism inside the sludge collection hopper 4, a sludge discharge port 5 at the bottom of the sludge collection hopper 4, a first sludge discharge valve 6 inside the sludge discharge port 5, and a sludge discharge main pipe 7 connected to the sludge discharge port 5.

[0033] In this embodiment, the top of the sedimentation tank 1 is provided with a water inlet 2 to allow water to be injected into the sedimentation tank 1 from above. The downward pressure generated by the water flow promotes the rapid settling of sludge to the bottom of the sedimentation tank 1. The side wall of the sedimentation tank 1 is provided with a water outlet 3 to maintain the liquid level inside the sedimentation tank 1 and prevent excessive water from overflowing. The bottom of the sedimentation tank 1 is provided with a sludge collection hopper 4 to collect the settled sludge. A rotating mechanism is installed inside the sludge collection hopper 4. The rotating mechanism maintains the fluidity of the sludge through stirring, preventing the sludge from accumulating in the sludge collection hopper 4 and thus avoiding sludge clumping.

[0034] Secondly, the sludge discharge port 5 is located at the bottom of the sludge collection hopper 4. A first sludge discharge valve 6 is installed inside the sludge discharge port 4. After the first sludge discharge valve 6 is opened, the sludge flows naturally to the sludge discharge port 4 under its own weight and the static pressure of the water, and is discharged through the sludge discharge port 4. The sludge discharge port 4 is connected to the main sludge discharge pipe 7, facilitating the flow of sludge into subsequent treatment stages after passing through the sludge discharge port.

[0035] See Figure 2 As shown, the rotating mechanism includes a blade 8, which is planar. The axis of the blade 8 is in the same direction as the axis of the sedimentation tank 1. A rotating shaft 9 is fixedly connected to the center of the blade 8. The rotating shaft 9 passes through the top surface of the sedimentation tank 1 and is connected to a servo motor 10.

[0036] In this embodiment, the blades 8 of the rotating mechanism are planar, and the axial direction of the blades 8 is the same as that of the sedimentation tank 1. This reduces the impact force of the water flow from the water inlet 2 on the blades 8, and also reduces the pressure of the water in the sedimentation tank 1 on the blades 8, thereby preventing damage to the blades 8. At the same time, it reduces the area of ​​obstruction of the sludge discharge port 5 by the blades 8, preventing the cross-sectional area of ​​the sludge discharge port 5 from decreasing, thereby preventing blockage of the sludge discharge port 5 and affecting the efficiency of sludge discharge.

[0037] In addition, the servo motor 10 drives the rotating shaft 9 to rotate, which in turn drives the blades 8 to rotate. The rotation of the blades 8 agitates the sludge, maintaining its fluidity and preventing it from accumulating in the sludge collection hopper 4, thus avoiding sludge clumping. At the same time, the continuous rotation of the blades 8 can disperse any clumped sludge and restore its fluidity.

[0038] Secondly, the sludge discharge main pipe 7 is equipped with a compressed air inlet 11, which is equipped with a one-way valve. The compressed air inlet 11 is connected to a compressed air backwash sludge discharge device 12 via a hose.

[0039] In this embodiment, a D50 type compressed air backflushing sludge discharger 12 is used. Compressed air is backflushed into the sludge discharge main pipe 7 through the compressed air inlet 11. During this process, some of the compressed air enters the sedimentation tank 1 through the sludge discharge port 5. The injection of compressed air causes the water flow in the sludge discharge main pipe 7 and the sedimentation tank 1 to vibrate, thereby causing the sludge attached to the inner wall of the sludge discharge main pipe 7 and the sedimentation tank 1 to fall off, thus preventing the sludge attached to the inner wall of the sludge discharge main pipe 7 and the sedimentation tank 1 from affecting the sludge discharge effect. Secondly, a one-way valve is provided in the compressed air inlet 11 to prevent water in the sludge discharge main pipe 7 from flowing into the D50 type compressed air backflushing sludge discharger 12.

[0040] See Figure 1 As shown, several sludge discharge branch pipes 13 are evenly distributed along the axial direction on the sludge discharge main pipe 7, and each sludge discharge branch pipe 13 is equipped with a second sludge discharge valve 14.

[0041] In this embodiment, the main sludge discharge pipe 7 is connected to several branch sludge discharge pipes 13. When the main sludge discharge pipe 7 becomes blocked, the corresponding second sludge discharge valve 14 on the branch sludge discharge pipe 13 can be opened, allowing the sludge to bypass the blocked pipe and continue flowing through the branch sludge discharge pipe 7, thereby preventing the sludge discharge operation from stopping. In addition, the branch sludge discharge pipes 13 can work simultaneously with the main sludge discharge pipe 7 to discharge sludge together, thereby improving sludge discharge efficiency and flexibility.

[0042] See Figure 2 As shown, water inlet 2 is connected to a water pipe that extends to the bottom of the sedimentation tank. The bottom of the water pipe is flush with the outlet 3. One end of the water pipe facing the bottom of the sedimentation tank 1 has a funnel-shaped opening with the bottom closed and the edges open.

[0043] In this embodiment, the end of the water pipe facing the bottom of the sedimentation tank 1 is provided with a funnel-shaped opening that is closed at the bottom and open at the edge. This can reduce the flow rate of water when it is injected into the sedimentation tank, reduce the impact of the water flow on the sludge at the bottom of the sedimentation tank 1, prevent the sludge from being resuspended due to the impact of the water flow, and at the same time enable the water flow to spread evenly in the sedimentation tank 1, forming a stable hydrostatic pressure and improving the sedimentation efficiency of the sludge.

[0044] Furthermore, the vertical cross-section of the sludge collecting hopper 4 is an inverted trapezoid, and the sidewall of the sludge collecting hopper 4 is inclined at a 60-degree angle to the horizontal plane. In this embodiment, the 60-degree angle between the sidewall of the sludge collecting hopper 4 and the horizontal plane allows the sludge in the sludge collecting hopper 4 to gradually increase in speed when discharged through the sludge discharge port 5, thereby improving the efficiency of sludge discharge. At the same time, it allows the sludge to slide along the inner wall of the sludge collecting hopper 4 towards the sludge discharge port 5, thereby reducing the friction between the sludge and the inner wall and preventing the sludge from adhering to the inner wall of the sludge collecting hopper 4.

[0045] In this embodiment, a sludge collection hopper 4 is provided at the bottom of the sedimentation tank 1 to collect the settled sludge. A rotating mechanism is installed inside the sludge collection hopper. The blades 8 of the rotating mechanism are planar, and the axis of the blades 8 is in the same direction as the axis of the sedimentation tank 1. This reduces the impact force of the water flow injected from the water inlet 2 on the blades 8, and also reduces the pressure of the water in the sedimentation tank 1 on the blades 8, thus preventing damage to the blades 8. Simultaneously, it reduces the area of ​​the blades 8 obstructing the sludge discharge port 5, preventing a reduction in the cross-sectional area of ​​the discharge port 5, thereby avoiding blockage and affecting the efficiency of sludge discharge. The rotational motion of the blades 8 agitates the sludge, maintaining its fluidity and preventing it from accumulating in the sludge collection hopper, thus avoiding sludge clumping. Furthermore, the continuous rotation of the blades 8 disperses any clumped sludge, restoring its fluidity.

[0046] The above are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A static pressure automatic sludge discharge device, characterized in that, The system includes a sedimentation tank, with a water inlet at the top and a water outlet on the side wall near the top. A sludge collection hopper is located at the bottom, containing a rotating mechanism and a sludge discharge port. A first sludge discharge valve is located within the discharge port, which is connected to a main sludge discharge pipe. A compressed air inlet with a one-way valve is located on the main discharge pipe, which is connected to a compressed air backflushing sludge discharge device via a flexible hose. A water pipe is connected to the water inlet, extending towards the bottom of the sedimentation tank. The bottom of the extended water pipe is flush with the water outlet, and the end of the water pipe facing the bottom of the sedimentation tank has a funnel-shaped opening, closed at the bottom and open at the edges.

2. The static pressure automatic sludge discharge device according to claim 1, characterized in that: The rotating mechanism includes blades, which are planar and have the same axial direction as the sedimentation tank. A rotating shaft is fixedly connected to the center of the blades, and a servo motor is connected to the rotating shaft through the top surface of the sedimentation tank.

3. The static pressure automatic sludge discharge device according to claim 1, characterized in that: The main sludge discharge pipe has several sludge discharge branch pipes evenly distributed along its axial direction, and each sludge discharge branch pipe is equipped with a second sludge discharge valve.

4. The static pressure automatic sludge discharge device according to claim 1, characterized in that: The vertical cross-section of the sludge collecting hopper is an inverted trapezoid, and the side wall of the sludge collecting hopper is inclined at a 60-degree angle to the horizontal plane.

Images