Filter bottom valve flushing structure

Abstract

The utility model discloses a bottom valve flushing structure of a filter, which is characterized in that a slag discharge port is arranged on a barrel component, a bottom valve is arranged on the slag discharge port, and a flushing component is arranged in the barrel component and above the bottom valve; a medium inlet pipe of the flushing assembly is connected with a shunt pipe which is connected with a plurality of spray pipes; the medium inlet pipe penetrates out of the barrel part, and the flow dividing pipe and the spraying pipes are arranged in the barrel part. According to the utility model, the flushing assembly is arranged above the bottom valve, and the bottom valve is flushed through the flushing assembly after one filtering period is finished and before the next filtering period is started, so that material leakage caused by the fact that filter residues are attached to the sealing surface of the bottom valve is avoided, the effectiveness and the reliability of sealing of the bottom valve are ensured, the service life of the bottom valve is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a bottom valve flushing structure of a filter. Background Art

[0002] The filter mainly includes an upper cover component, a cylinder component, several filter plate components, a vibration device, a bottom valve for discharging solid filter cakes, etc. The bottom valve is usually a butterfly valve.

[0003] During a filter cycle, after the material is filtered, the filter opens the butterfly valve and activates the vibration device to vibrate the filter aid, filtered impurities, and other filter residues attached to the filter plate into a collection tank. As the filter residue passes through the butterfly valve, some of it adheres to the sealing surface of the butterfly valve. Because of the residue attached to the sealing surface of the butterfly valve, when the butterfly valve is closed for feed filtration at the beginning of the next filtration cycle, this residue may become stuck on the sealing surface, causing minor leakage. As the filtration cycle increases, this leakage will become more severe, causing the butterfly valve seal to fail, necessitating the replacement of a new butterfly valve for sealing. This shortens the life of the butterfly valve and increases maintenance costs. Utility Model Content

[0004] In response to the shortcomings of the butterfly valves of the above-mentioned existing filters, which have a short service life and high maintenance costs, the applicant provides a rationally structured bottom valve flushing structure for the filter. The bottom valve is flushed before the end of one filtration cycle and the beginning of the next filtration cycle to prevent filter residue from adhering to the sealing surface of the bottom valve, thereby extending the service life of the bottom valve and reducing maintenance costs.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A bottom valve flushing structure for a filter comprises a slag discharge port provided on a cylinder component, a bottom valve provided on the slag discharge port, a flushing assembly provided inside the cylinder component and above the bottom valve; a medium inlet pipe of the flushing assembly is connected to a diverter pipe, and a plurality of nozzles are connected to the diverter pipe; the medium inlet pipe passes through the cylinder component, and the diverter pipe and the plurality of nozzles are arranged inside the cylinder component.

[0007] As a further improvement of the above technical solution:

[0008] The medium inlet pipe is arranged horizontally and connected to the middle of the diverter pipe, and the nozzle is connected to the bottom side of the diverter pipe and arranged vertically; the diverter pipe is fixed to the inner side of the cylinder component through a plurality of fixing parts.

[0009] The diverter pipe slopes downward from the medium inlet end to the other end.

[0010] The downward inclination angle α of the diverter pipe is 2 to 5°.

[0011] The shunt pipe is a C-shaped pipe with an opening on one side, and plugs are provided at the open ports at both ends of the shunt pipe.

[0012] The feed pipe of the filter passes through the opening obliquely downward and extends into the top surface of the valve plate near the bottom valve.

[0013] The bottom end of the nozzle is configured as a trumpet-shaped flat opening that is smaller at the top and larger at the bottom.

[0014] The bottom end of the nozzle is connected to a fan-shaped nozzle, which has a flat V-shaped opening.

[0015] The flushing cycle duration of the flushing component is greater than or equal to 1 / 2 of the closing time of the bottom valve.

[0016] The cylinder body comprises a straight cylinder section and a conical cylinder section, and the slag discharge port, bottom valve and flushing assembly are arranged at the bottom of the conical cylinder section.

[0017] The beneficial effects of the utility model are as follows:

[0018] The utility model provides a flushing component above the bottom valve. The bottom valve is flushed by the flushing component before the end of one filtration cycle and the beginning of the next filtration cycle, so as to prevent the filter residue from adhering to the sealing surface of the bottom valve and causing material leakage, thereby ensuring the effectiveness and reliability of the bottom valve seal, extending the service life of the bottom valve and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of a filter adopting the utility model.

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0021] Figure 3 A top view of the flushing assembly.

[0022] Figure 4 Schematic diagram of the structure of an embodiment of a nozzle, a) is a partial cross-sectional view, b) is an orthographic projection view of the other side.

[0023] Figure 5 Schematic diagram of the structure of the nozzle, a) is a sectional view of an axial section, and b) is a sectional view of another axial section.

[0024] In the figure: 10, cylinder component; 20, filter plate component; 30, upper cover component; 40, vibration device; 50, feed pipe; 60, discharge pipe; 70, slag discharge port; 80, bottom valve; 801, valve plate;

[0025] 90. Flushing assembly; 1. Medium inlet pipe; 2. Diverter pipe; 21. Plug; 3. Nozzle; 31. Flat mouth; 32. Fan-shaped nozzle; 321. V-shaped mouth; 4. Fixing piece; 5. Opening. DETAILED DESCRIPTION

[0026] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0027] like Figure 1 As shown, the cylinder component 10 of the filter using the present invention includes a straight section and a conical section. A filter plate component 20 is disposed in the straight section. An upper cover component 30 and a vibration device 40 are disposed on the top of the straight section. A discharge pipe 60 is disposed at the bottom of the straight section. A feed pipe 50 and a slag discharge port 70 are disposed at the bottom of the conical section. A bottom valve 80 is disposed on the slag discharge port 70. A valve plate 801 of the bottom valve 80 is openably disposed in the slag discharge port 70. When the bottom valve 80 is closed, the valve plate 801 is closed to 0°, laterally blocking the slag discharge port 70. When the bottom valve 80 is opened, the valve plate 801 rotates to 90°, releasing the slag discharge channel of the slag discharge port 70. A flushing assembly 90 is also disposed at the bottom of the conical section of the cylinder component 10, above the bottom valve 80.

[0028] like Figure 2 、 Figure 3 As shown, the flushing assembly 90 includes a connected medium inlet pipe 1, a diverter pipe 2, and several nozzles 3. The medium inlet pipe 1 is horizontally connected to the middle of the diverter pipe 2, and the nozzles 3 are evenly spaced and connected to the bottom of the diverter pipe 2. The medium inlet pipe 1 extends horizontally through the barrel 10, while the diverter pipe 2 and the nozzles 3 are arranged inside the barrel 10. The diverter pipe 2 is fixed to the inside of the barrel 10 by several fixing members 4. The nozzles 3 are arranged vertically, spraying the cleaning medium vertically downward. Each flushing cycle of the flushing assembly 90 begins when the valve plate 801 of the bottom valve 80 closes to 45° and ends when the bottom valve 80 closes to 0° (full position), i.e., flushing occurs during the process of the valve plate 801 rotating from 45° to 0°. Alternatively, flushing can begin when the valve plate 801 starts to close (at 90°) and end when the bottom valve 80 closes to 0° (full position), i.e., flushing occurs throughout the entire closing process of the valve plate 801 from 90° to 0°. By repeatedly opening and closing the bottom valve 80, the valve plate 801 can be flushed for multiple cycles to ensure thorough flushing. Of course, the flushing component 90 can also be opened when the valve plate 801 of the bottom valve 80 is closed to an angle within the range of 45° to 90°, such as 60° or 75°. That is, the flushing cycle of the flushing component 90 is greater than or equal to 1 / 2 of the closing time of the bottom valve 80, ensuring that the valve plate 801 is sufficiently flushed for a sufficient flushing time and ensuring the flushing effect.

[0029] like Figure 2 As shown, the diverter pipe 2 is inclined downward at a certain angle from one end of the medium inlet pipe 1 to the other end. The downward angle α of the diverter pipe 2 is 2 to 5 degrees. The diverter pipe 2 is inclined downward from the medium inlet end to the other end, so that the cleaning medium fed from the medium inlet pipe 1 can be evenly and quickly delivered to every part of the diverter pipe 2, and the valve plate 801 of the bottom valve 80 can be fully cleaned through the nozzle 3. Figure 3As shown, the shunt pipe 2 is a C-shaped pipe with an opening 5 on one side. The two ends of the shunt pipe 2 are open ports, and plugs 21 are respectively provided at the ports for sealing. Figure 2 、 Figure 3 As shown, the opening 5 of the diverter pipe 2 makes way for the feed pipe 50 , and the feed pipe 50 passes through the opening 5 obliquely downward and extends into the top surface of the valve plate 801 near the bottom valve 80 .

[0030] like Figure 4 a) Figure 4 As shown in b), in one embodiment, the bottom end ejection port of the nozzle 3 is configured as a trumpet-shaped flat port 31 that is smaller at the top and larger at the bottom. The cleaning medium is ejected through the flat port 31 in a fan shape, covering a larger cleaning area and providing a cleaner and more thorough cleaning.

[0031] like Figure 5 a) Figure 5 As shown in b), in another embodiment, a fan-shaped nozzle 32 can also be connected to the nozzle at the bottom end of the nozzle 3. The fan-shaped nozzle 32 has a flat V-shaped mouth 321. The cleaning medium is also fan-shaped after being sprayed out through the V-shaped mouth 321 of the fan-shaped nozzle 32, and the cleaning area is large.

[0032] In actual use of the present invention, after the filter completes filtering of the material in one filtering cycle, the bottom valve 80 is opened to discharge the residue. After the filter residue is discharged, the bottom valve 80 is closed. When the bottom valve 80 is initially closed or the valve plate 801 is closed to 45 degrees, the flushing assembly 90 is started for flushing. After the bottom valve 80 is fully closed, the flushing assembly 90 stops flushing, completing one cycle of flushing of the bottom valve 80. The bottom valve 80 is repeatedly opened and closed multiple times, and the flushing assembly 90 is repeatedly opened and closed multiple times. The bottom valve 80 is flushed multiple times by the flushing assembly 90. After the bottom valve 80 is completely flushed, the bottom valve 80 is closed and the filtering work of the next filtering cycle is carried out.

[0033] The present invention provides a flushing assembly 90 above the bottom valve 80. Before one filtration cycle ends and the next filtration cycle begins, the bottom valve 80 is flushed by the flushing assembly 90 to prevent filter residue from adhering to the sealing surface of the bottom valve 80 and causing material leakage, thereby ensuring the effectiveness and reliability of the sealing of the bottom valve 80, extending the service life of the bottom valve 80, and reducing maintenance costs.

[0034] The above description is an explanation of the present invention, not a limitation of the present invention. The present invention may be modified in any form without violating the spirit of the present invention.

Claims

1. A bottom valve flushing structure for a filter, wherein a slag discharge port (70) is provided on a cylinder part (10), and a bottom valve (80) is provided on the slag discharge port (70), characterized in that: A flushing assembly (90) is provided in the barrel component (10) and above the bottom valve (80); the medium inlet pipe (1) of the flushing assembly (90) is connected to the diverter pipe (2), and the diverter pipe (2) is connected to a plurality of nozzles (3); the medium inlet pipe (1) passes through the barrel component (10), and the diverter pipe (2) and the plurality of nozzles (3) are arranged in the barrel component (10).

2. The bottom valve flushing structure of the filter according to claim 1, characterized in that: The medium inlet pipe (1) is arranged horizontally and connected to the middle of the diverter pipe (2); the nozzle (3) is connected to the bottom side of the diverter pipe (2) and arranged vertically; the diverter pipe (2) is fixed to the inner side of the cylinder component (10) through a plurality of fixing members (4).

3. The bottom valve flushing structure of the filter according to claim 1, characterized in that: The diverter pipe (2) is inclined downward from the medium inlet end to the other end.

4. The bottom valve flushing structure of the filter according to claim 3, characterized in that: The downward inclination angle α of the diverter pipe (2) is 2 to 5°.

5. The bottom valve flushing structure of the filter according to claim 1, characterized in that: The shunt pipe (2) is a C-shaped pipe having an opening (5) on one side, and plugs (21) are provided at the open ports at both ends of the shunt pipe (2).

6. The bottom valve flushing structure of the filter according to claim 5, characterized in that: The feed pipe (50) of the filter passes obliquely downward from the opening (5) and extends into the top surface of the valve plate (801) near the bottom valve (80).

7. The bottom valve flushing structure of the filter according to claim 1, characterized in that: The bottom end of the nozzle (3) is provided with a trumpet-shaped flat opening (31) that is smaller at the top and larger at the bottom.

8. The bottom valve flushing structure of the filter according to claim 1, characterized in that: The bottom end of the nozzle (3) is connected to the fan-shaped nozzle (32), and the fan-shaped nozzle (32) has a flat V-shaped opening (321).

9. The bottom valve flushing structure of the filter according to claim 1, characterized in that: The flushing cycle duration of the flushing component (90) is greater than or equal to 1 / 2 of the closing duration of the bottom valve (80).

10. The bottom valve flushing structure of the filter according to claim 1, characterized in that: The cylinder component (10) comprises a straight cylinder section and a conical cylinder section, and a slag discharge port (70), a bottom valve (80), and a flushing assembly (90) are arranged at the bottom of the conical cylinder section.

Images