Water treatment apparatus filter device

Abstract

This utility model discloses a filtration device for water treatment equipment, mainly relating to the field of wastewater filtration. It includes a support frame with an inclined mounting opening on its front side. A screen is fixed inside the mounting opening, and a slag discharge trough is located below the screen. The slag discharge trough is an elongated, open trough inclined along its length, with a semi-circular bottom. A rotating cylinder is coaxially mounted on the bottom of the slag discharge trough, and a first filter hole penetrates the rotating cylinder located within the slag discharge trough. A spiral blade is fixed to the outside of the rotating cylinder, and a second filter hole penetrates the spiral blade. The bottom end of the rotating cylinder is exposed outside the slag discharge trough, and a slag discharge port is located at the higher end of the slag discharge trough bottom. The beneficial effects of this utility model are: it can reduce the water content of impurities discharged by the hydraulic screen and improve the production capacity of the hydraulic screen.

Description

Technical Field

[0001] This utility model relates to the field of wastewater filtration, specifically a filtration device for water treatment equipment. Background Technology

[0002] A hydraulic screen is a common water treatment device, mainly used for filtering and separating suspended solids and impurities from sewage or wastewater. It achieves solid-liquid separation by using the gravity of the water flow and the mesh openings of the screen to trap solid particles in the water. It is widely used in sewage treatment, industrial wastewater treatment, and water supply treatment, and is particularly suitable for removing large suspended solids and fibrous impurities from water.

[0003] The hydraulic screen has a relatively simple structure, mainly composed of a screen mesh, screen frame, inlet pipe, distribution pipe, and outlet pipe. The screen mesh is the core component of the hydraulic screen, usually made of corrosion-resistant materials such as stainless steel. The size of the screen openings can be selected according to the water quality and filtration precision requirements. When water flows through the screen mesh, larger solid particles are intercepted, while smaller water molecules flow out through the openings, thus achieving a filtration effect. This means that water will adhere to the surface of the impurities and fall off with them. Therefore, the naturally falling impurities still contain a large amount of water. The excessively high water content of the impurities causes problems for subsequent treatment processes, requiring additional filtration or dewatering steps and increasing process costs. Utility Model Content

[0004] The purpose of this invention is to provide a filtration device for water treatment equipment, which can reduce the water content of impurities discharged by the hydraulic screen and improve the production capacity of the hydraulic screen.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] A water treatment equipment filtration device includes a support frame, the front side of which has an inclined mounting opening, and a screen is fixed inside the mounting opening.

[0007] Below the screen is a slag discharge trough, which is a long, open trough that is inclined along its length. The bottom of the slag discharge trough is a semi-circular arc. A rotating cylinder is coaxially mounted on the bottom of the slag discharge trough. A first filter hole is penetrating the rotating cylinder located inside the slag discharge trough. A spiral blade is fixed to the outside of the rotating cylinder. A second filter hole is penetrating the spiral blade. The bottom end of the rotating cylinder is exposed and extends through the outside of the slag discharge trough. A slag discharge port is provided at the higher end of the bottom of the slag discharge trough.

[0008] The screen is an arc-shaped screen.

[0009] A water storage tank is fixed to the top of the support frame, and an inlet pipe is connected to the top of the water storage tank. An overflow port is provided on the upper part of the water storage tank near the screen. A lower water tank is fixed inside the support frame below the screen, and an outlet is provided on the lower water tank.

[0010] The bottom side of the overflow port is provided with an arc-shaped guide plate. The side of the guide plate away from the water storage tank is folded down and located above the screen. A baffle is provided above the overflow port, and the baffle is located in front of the guide plate.

[0011] The bottom side of the screen is connected to a downwardly bent slag guide plate, which is located inside the slag discharge trough and close to the side wall of the trough.

[0012] The bottom end of the rotating drum extends through the outside of the slag discharge trough and is equipped with a gear ring. The bottom end of the slag discharge trough is rotatably equipped with a motor-driven gear, which meshes with the gear ring to drive the rotation.

[0013] The slag discharge trough is provided with a first trough plate and a second trough plate at both ends. The second trough plate is located at the higher end of the slag discharge trough. The second trough plate is provided with a flange that can be rotatably connected to the end of the rotating drum away from the first trough plate. The flange is provided with a sealing plate, and the sealing plate is detachably sealed to the flange.

[0014] A buffer water tank is fixed above the installation port. The buffer water tank is located in the middle or lower part of the screen. The buffer water tank extends horizontally along the width of the installation port. The bottom of the buffer water tank is provided with a downward water outlet channel for releasing water downward onto the screen. The bottom end of the rotating drum is connected to a rotary joint. The other end of the rotary joint is connected to a connecting pipe. The upper part of the buffer water tank is connected to the connecting pipe.

[0015] The water outlet channel has a rotating channel extending through its length in the middle. The rotating channel includes an arc-shaped inner wall symmetrically arranged on the inner wall of the water outlet channel. A rotating pipe rotatably connected to the rotating channel passes through the rotating channel. The circumference of the rotating pipe fits against the arc-shaped inner wall. The circumference of the rotating pipe has symmetrical cuts that pass through it. The cuts are located inside the rotating channel. One end of the rotating pipe passes through one end of the buffer water tank and is exposed to the outside.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] Wastewater falls onto a screen, where it gradually filters out impurities. The filtered impurities are carried by the water flow into the slag discharge trough. Impurities carrying a significant amount of water are transported upwards by the rotation of the spiral blades. During this transport, the water carried by the impurities is filtered again through the first filter hole on the rotating drum and enters the drum. As the spiral blades transport the impurities upwards, they are continuously turned over and squeezed. The second filter hole also further assists in filtering water, causing the water to flow downwards and the impurities to move upwards, thus achieving further water-slag separation. This effectively removes water from the residue and yields filtered material with a significantly reduced moisture content. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0019] Figure 2 This is a front view of the present invention.

[0020] Figure 3 This is the utility model Figure 2 AA sectional view.

[0021] Figure 4 This is a schematic diagram of the rotating drum of this utility model.

[0022] Figure 5 This is a schematic diagram of the lower part of the buffer water tank of this utility model.

[0023] Figure 6 This is a schematic diagram of the interior of the buffer water tank of this utility model.

[0024] The labels shown in the attached diagram:

[0025] 1. Support frame; 2. Mounting port; 3. Screen; 4. Water storage tank; 5. Inlet pipe; 6. Overflow port; 7. Guide plate; 8. Baffle; 9. Lower water tank; 10. Slag guide plate; 11. Slag discharge trough; 12. First trough plate; 13. Second trough plate; 14. Rotary drum; 15. Flange; 16. Slag discharge port; 17. Spiral blade; 18. Gear ring; 19. Rotary joint; 20. Buffer water tank; 21. Water outlet channel; 22. Rotating pipe; 23. Cutout; 24. Arc-shaped inner wall. Detailed Implementation

[0026] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0027] Example 1:

[0028] It includes a support frame 1, which is the main structure of the hydraulic screen and is used to support all the components of the entire device. It is usually made of metal and has sufficient strength and stability to withstand various forces during the operation of the device.

[0029] The front side of the support frame 1 has an inclined mounting opening 2, and a screen 3 is fixed inside the mounting opening 2. The screen 3 is an arc-shaped screen 3 with an overall arc-shaped curved surface. The screen 3 has a frame around its perimeter, and the two sides of the frame are respectively fixed to the two sides of the mounting opening 2.

[0030] A water storage tank 4 is fixed to the top of the support frame 1. A water inlet pipe 5 is connected to the top of the water storage tank 4. The water inlet pipe 5 is used to connect to the sewage source and introduce sewage into the water storage tank 4.

[0031] The bottom of the water storage tank 4 is lower than the top side of the screen 3. The water storage tank 4 has an overflow port 6 on the upper part of the side near the screen 3. The bottom side of the overflow port 6 has an arc-shaped guide plate 7. The side of the guide plate 7 away from the water storage tank 4 is folded down and located above the screen 3, so that the overflowing sewage can be guided to fall on the upper side of the screen 3.

[0032] A baffle 8 is provided above the overflow port 6, and the baffle 8 is located in front of the guide plate 7.

[0033] Wastewater flows through overflow port 6 and falls onto screen 3, where impurities are removed.

[0034] Below the screen 3 is a water tank 9 fixed in the support frame 1. The water tank 9 has a water outlet and is used to collect and discharge the water filtered by the screen 3.

[0035] The bottom side of the screen 3 is connected to a downwardly bent guide plate 10, which is used to guide the filtered material downwards.

[0036] Below the screen 3 is a slag discharge trough 11. The bottom of the slag discharge trough 11 is a semi-circular arc-shaped trough bottom, and the top of the slag discharge trough 11 is a groove opening corresponding to the diameter of the trough bottom.

[0037] The guide plate 10 is located inside the slag discharge trough 11 and close to the side wall of the trough, so that the filtered material falls into the slag discharge trough 11.

[0038] The slag discharge trough 11 is an elongated open trough inclined along its length. The two ends of the slag discharge trough 11 are respectively provided with a first trough plate 12 and a second trough plate 13. The first trough plate 12 is located at the lower end of the slag discharge trough 11. A rotating cylinder 14 is rotatably installed through the first trough plate 12. The rotating cylinder 14 is coaxially arranged with the bottom curved surface of the slag discharge trough 11. The second trough plate 13 is provided with a flange 15 that is rotatably connected to the end of the rotating cylinder 14 away from the first trough plate 12. A sealing plate is provided on the flange 15. The sealing plate and the flange 15 are detachably sealed. When the sealing plate is fastened to the mounting port 2, the top of the rotating cylinder 14 is closed, so that the liquid in the rotating cylinder 14 can only be discharged through the cylinder opening at its bottom end. When the sealing plate is opened, it is convenient to use a thin brush or other tools (such as a water gun) to backwash the inner wall of the rotating cylinder 14 and remove the sludge residue on the surface of the rotating cylinder 14.

[0039] The bottom of the upper part of the slag discharge tank 11 is provided with a slag discharge port 16, which extends downward and a container can be set below to collect impurities that have been further dehydrated.

[0040] The rotating drum 14 has a first filter hole distributed on it, which is located inside the slag discharge trough 11. A spiral blade 17 is fixed to the outside of the rotating drum 14, and a second filter hole is passed through the spiral blade 17.

[0041] The bottom end of the rotating drum 14 passes through the first trough plate 12 and is located outside the slag discharge trough 11 and is provided with a gear ring 18. A gear driven by a motor is rotatably installed on one side of the first trough plate 12. The gear meshes with the gear ring 18 to drive the rotation. The bottom end of the rotating drum 14 is connected to a rotary joint 19, and a connecting pipe is connected to the outlet of the other end of the rotary joint 19.

[0042] A buffer water tank 20 is fixed above the mounting port 2. The buffer water tank 20 is located in the middle or lower part of the screen 3. Both sides of the buffer water tank 20 are fixed in the support frame 1. The buffer water tank 20 extends horizontally along the width direction of the mounting port 2. The bottom of the buffer water tank 20 is provided with a downward water outlet channel 21. The water outlet channel 21 is elongated and used to release water downward onto the screen 3. The upper part of the buffer water tank 20 is connected to a connecting pipe. A water pump returns the water from the bottom of the rotating drum 14 to the buffer water tank 20 for temporary storage and downward drainage. This causes the water to fall in the middle of the screen 3, increasing the water flow force in the middle of the screen 3 and promoting the downward movement of the filtered material.

[0043] The working principle of this device is as follows:

[0044] Wastewater is introduced into the storage tank 4, and the water flows through the overflow port 6 onto the upper part of the screen 3.

[0045] Wastewater is filtered through screen 3 to gradually remove impurities, and the filtered water passes through screen 3 and is collected through the drain tank 9 below.

[0046] The filtered impurities are washed down into the slag discharge trough 11 by the water flow. The impurities with more water are transported upward by the rotation of the spiral blades 17. The water entrained in the transport is filtered again through the first filter hole on the rotating drum 14 and enters the rotating drum 14. It is returned to the buffer water tank 20 through the rotary joint 19 at the bottom of the rotating drum 14. As the spiral blades 17 transport upward, the impurities are continuously turned and squeezed. The second filter hole can also further assist in filtering water, so that the water flows downward and the impurities move upward, achieving further water and slag separation. It can better remove the water in the residue. The impurities that reach the upper part of the slag discharge trough 11 after being squeezed finally fall down through the slag discharge port 16 for collection, obtaining filtered material with greatly reduced water content.

[0047] The return water entering the buffer tank 20, after preliminary filtration by the rotating drum 14, contains fewer impurities than the wastewater. Falling into the middle of the screen 3 does not increase the operating pressure of the screen 3, but rather increases the water flow force in the middle of the screen 3. For the curved screen 3, the design is typically intended to increase the filtration area and improve filtration efficiency. Its curved structure causes some impurities to accumulate at the bottom of the screen 3 as the water flows through it. This phenomenon is mainly due to the relatively faster water flow at the top of the curved screen 3, making it easier for impurities to be carried away. However, when the water reaches the bottom of the curved screen 3, most of the water is separated, the water flow slows down, more impurities are screened out, and the kinetic energy of the impurities decreases. Under the influence of gravity, the impurities easily accumulate and clog the screen 3, pressing against each other and blocking the screen holes, affecting the filtration effect at the bottom. By supplementing the middle section with a downward flow of filtered water, the force of the water flow is enhanced, effectively carrying away impurities while also preventing impurities from covering and clogging the lower part of screen 3, thus maintaining high-efficiency filtration. Furthermore, the water that has undergone preliminary filtration passes through screen 3 again, improving the water output capacity of the hydraulic screen, increasing efficiency and output, and minimizing water consumption.

[0048] Example 2:

[0049] In order to better control the timing and magnitude of increasing the water flow in the middle.

[0050] The water outlet channel 21 has a rotating channel extending through its length in the middle. The rotating channel includes an arc-shaped inner wall 24 symmetrically arranged on the inner wall of the water outlet channel 21. A rotating pipe 22 rotatably connects to the rotating channel. The circumference of the rotating pipe 22 fits against the arc-shaped inner wall 24. The circumference of the rotating pipe 22 has symmetrical cuts 23 that penetrate it. The cuts 23 are located inside the rotating channel. One end of the rotating pipe 22 penetrates one end of the buffer water tank 20 and is exposed to the outside. It can be rotated 90 degrees by motor control or manually. When the cuts 23 are positioned left and right on both sides of the rotating pipe 22, the cuts 23 are located inside the rotating channel and cannot fall into the water. When the cuts 23 are positioned top and bottom of the rotating pipe 22, the cuts 23 connect to the buffer water tank 20 and below, allowing water to fall onto the surface of the screen 3.

[0051] This structure increases the controllability of supplementing the water droplets in the middle of the screen 3. The filtered water in the rotating drum 14 can be stored in the buffer water tank 20. When the tank is full or the filter screen below is significantly clogged, the water is released in a concentrated manner to improve the impact effect.

Claims

1. A water treatment equipment filtration device, comprising a support frame, wherein the front side of the support frame has an inclined mounting opening, and a screen is fixed inside the mounting opening, characterized in that, Below the screen is a slag discharge trough, which is a long, open trough that is inclined along its length. The bottom of the slag discharge trough is a semi-circular arc. A rotating cylinder is coaxially mounted on the bottom of the slag discharge trough. A first filter hole is penetrating the rotating cylinder located inside the slag discharge trough. A spiral blade is fixed to the outside of the rotating cylinder. A second filter hole is penetrating the spiral blade. The bottom end of the rotating cylinder is exposed and extends through the outside of the slag discharge trough. A slag discharge port is provided at the higher end of the bottom of the slag discharge trough.

2. The water treatment equipment filtration device according to claim 1, characterized in that, The screen is an arc-shaped screen.

3. The water treatment equipment filtration device according to claim 1, characterized in that, A water storage tank is fixed to the top of the support frame, and an inlet pipe is connected to the top of the water storage tank. An overflow port is provided on the upper part of the water storage tank near the screen. A lower water tank is fixed inside the support frame below the screen, and an outlet is provided on the lower water tank.

4. The water treatment equipment filtration device according to claim 3, characterized in that, The bottom side of the overflow port is provided with an arc-shaped guide plate. The side of the guide plate away from the water storage tank is folded down and located above the screen. A baffle is provided above the overflow port, and the baffle is located in front of the guide plate.

5. The water treatment equipment filtration device according to claim 1, characterized in that, The bottom side of the screen is connected to a downwardly bent slag guide plate, which is located inside the slag discharge trough and close to the side wall of the trough.

6. The water treatment equipment filtration device according to claim 1, characterized in that, The bottom end of the rotating drum extends through the outside of the slag discharge trough and is equipped with a gear ring. The bottom end of the slag discharge trough is rotatably equipped with a motor-driven gear, which meshes with the gear ring to drive the rotation.

7. The water treatment equipment filtration device according to claim 1, characterized in that, The slag discharge trough is provided with a first trough plate and a second trough plate at both ends. The second trough plate is located at the higher end of the slag discharge trough. The second trough plate is provided with a flange that can be rotatably connected to the end of the rotating drum away from the first trough plate. The flange is provided with a sealing plate, and the sealing plate is detachably sealed to the flange.

8. The water treatment equipment filtration device according to claim 1, characterized in that, A buffer water tank is fixed above the installation port. The buffer water tank is located in the middle or lower part of the screen. The buffer water tank extends horizontally along the width of the installation port. The bottom of the buffer water tank is provided with a downward water outlet channel for releasing water downward onto the screen. The bottom end of the rotating drum is connected to a rotary joint. The other end of the rotary joint is connected to a connecting pipe. The upper part of the buffer water tank is connected to the connecting pipe.

9. The water treatment equipment filtration device according to claim 8, characterized in that, The water outlet channel has a rotating channel extending through its length in the middle. The rotating channel includes an arc-shaped inner wall symmetrically arranged on the inner wall of the water outlet channel. A rotating pipe rotatably connected to the rotating channel passes through the rotating channel. The circumference of the rotating pipe fits against the arc-shaped inner wall. The circumference of the rotating pipe has symmetrical cuts that pass through it. The cuts are located inside the rotating channel. One end of the rotating pipe passes through one end of the buffer water tank and is exposed to the outside.

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