Zero-leakage double-layer cinder valve

Abstract

The utility model discloses a zero-leakage double-layer cinder valve which comprises a charging barrel and two valve body units, wherein the two valve body units are arranged on the charging barrel through connecting flanges and are arranged at an interval; the valve body unit comprises a valve body, a valve plate installed in the valve body, a valve rod and a driving assembly for driving the valve rod to drive the valve plate to ascend and descend. A sealing assembly is arranged between the valve body and the valve plate; a valve body feeding panel and a valve body discharging panel are arranged in the valve body and located on the two sides of the valve plate respectively, and the inner diameter of a feeding opening in the valve body feeding panel is smaller than that of the charging barrel. The valve body feeding panel and the valve body discharging panel are arranged on the inner side of the valve body, dust and impurities in materials are intercepted through protection of the panels on the two sides, the valve body and the valve plate are comprehensively sealed through the U-shaped framework rubber pad and the rubber strip, the sealing performance between the valve plate and the valve body is improved, and the service life of the valve plate and the valve body is prolonged. And the leakage phenomenon is avoided.

Description

Technical Field

[0001] This utility model relates to the field of ash discharge valve technology, specifically to a zero-leakage double-layer ash discharge valve. Background Technology

[0002] The ash discharge valve is a valve specifically designed for powder material handling systems. It is primarily used to ensure a good sealing effect during frequent unloading to prevent dust leakage and achieve the "zero leakage" environmental protection requirement. Due to its structural characteristics, there is a gap between the U-shaped skeleton sealing ring and the limiting structure. This gap is crucial for ensuring the normal floating of the U-shaped skeleton sealing ring. Since existing ash discharge valves are typically single-layered, when used in pipelines carrying dusty media, after a period of use, dust and impurities in the media can be adsorbed into the gap between the U-shaped skeleton sealing ring and the limiting structure. This may cause the seal to shift or wear through the gap, leading to valve sealing failure and ultimately rendering the entire pipeline inoperable. Furthermore, disassembling and repairing the damaged U-shaped skeleton sealing ring is inconvenient and affects the ash discharge speed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a zero-leakage double-layer ash discharge valve, which facilitates valve body maintenance without affecting valve body use, improves the sealing between valve plate and valve body, reduces leakage during ash discharge, and extends valve service life.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0005] A zero-leakage double-layer ash discharge valve includes a material cylinder and two valve body units installed on the material cylinder via connecting flanges and spaced apart. Each valve body unit includes a valve body, a valve plate installed inside the valve body, a valve stem, and a drive assembly for driving the valve stem to raise and lower the valve plate. A sealing assembly is provided between the valve body and the valve plate. The sealing assembly includes a U-shaped skeleton rubber gasket installed between the outer side of the valve plate and the valve body, and a rubber strip installed between the top of the valve body and the top of the valve plate. A valve body inlet panel and a valve body outlet panel are respectively provided inside the valve body, located on both sides of the valve plate. The inner diameter of the inlet on the valve body inlet panel is smaller than the inner diameter of the material cylinder.

[0006] The aforementioned zero-leakage double-layer ash discharge valve has a U-shaped round steel plate installed on the outer edge of the U-shaped skeleton rubber pad. Several threaded holes are opened on the outer plate of the valve body, and adjusting bolts are installed in the threaded holes. The inner end face of the adjusting bolt abuts against the outer side of the U-shaped round steel plate.

[0007] The aforementioned zero-leakage double-layer ash discharge valve has limit blocks on both sides of the upper part of the valve body, which contact the side of the valve plate and limit the horizontal movement of the valve plate. There is a gap between the limit blocks and the valve plate. A groove for installing a U-shaped skeleton rubber pad is provided on the valve body outside the limit blocks. A limit groove matching the limit blocks is provided on the top inner surface of the U-shaped skeleton rubber pad. There is also a gap between the limit blocks and the U-shaped skeleton rubber pad.

[0008] The aforementioned zero-leakage double-layer ash discharge valve has a long groove at the top of the valve body that is fitted with a rubber strip. A pressure strip connected to the rubber strip is also installed in the groove. A pressure plate is provided on the outside of the pressure strip. The pressure plate presses the pressure strip and the rubber strip together with fasteners.

[0009] The aforementioned zero-leakage double-layer ash discharge valve includes an electric push rod as the drive assembly. The valve body has a mounting bracket at the top for mounting the drive assembly, and a lifting channel for raising and lowering the valve stem is provided between the mounting brackets.

[0010] Due to the adoption of the above technical solutions, the technological progress achieved by this utility model is as follows.

[0011] This utility model provides a zero-leakage double-layer ash discharge valve. By setting two valve body units, one valve body unit is used to block most of the material, and the other valve body unit is used to allow dust to pass through during the material discharge process, which improves the sealing performance of the ash discharge valve. Moreover, when the first valve body unit is damaged, the damaged valve body unit can be repaired, and the other valve body unit is in working condition, which does not affect the use of the valve body, thus improving the working efficiency of the ash discharge valve. At the same time, by setting a U-shaped skeleton rubber gasket and rubber strips to fully seal the valve body and valve plate, the sealing performance between the valve plate and the valve body is improved, and leakage is avoided.

[0012] This utility model also provides a valve body feed panel and a valve body discharge panel on the inside of the valve body. The inner diameter of the feed port on the valve body feed panel is smaller than the inner diameter of the material cylinder. The protection of the two side panels intercepts dust and impurities in the material, preventing dust from entering the gap between the limit block and the U-shaped skeleton rubber pad and damaging the sealing performance of the valve body. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the specific structure of the present utility model;

[0014] Figure 2 This is the front view of the present invention;

[0015] Figure 3 This is a side view of the present invention;

[0016] Figure 4 for Figure 3 FF section view;

[0017] Figure 5 for Figure 3 Enlarged view of the structure at point A in the middle;

[0018] Figure 6 This is a partial structural schematic diagram of the present invention;

[0019] Figure 7 for Figure 5 Enlarged view of the structure at point B;

[0020] Figure 8 This is a schematic diagram of the specific structure of the internal limiting block of the valve body described in this utility model.

[0021] The components are: 1. Valve body, 2. Material cylinder, 3. Valve plate, 4. Valve stem, 5. Electric push rod, 6. Connecting flange, 7. U-shaped skeleton rubber gasket, 8. Mounting bracket, 9. Valve body feed panel, 10. Valve body discharge panel, 11. Rubber strip, 12. Pressure strip, 13. Fastener, 14. U-shaped round steel plate, 15. Valve body outer plate, 16. Adjusting bolt, 17. Limiting groove, 18. Limiting block, 19. Valve body unit. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] A zero-leakage double-layer ash discharge valve, such as Figures 1 to 6 As shown, it includes a material cylinder 2 and two valve body units 19 installed on the material cylinder 2 through a connecting flange 6 and spaced apart. By setting two valve body units 19, the valve body unit 19 near the inlet blocks most of the material, and the valve body unit 19 near the outlet further blocks the dust and impurities generated during material discharge, ensuring the overall sealing of the ash discharge valve.

[0024] The valve body unit 19 includes a valve body 1, a valve plate 3 installed inside the valve body 1, a valve stem 4, and a drive assembly for driving the valve stem 4 to move the valve plate 3 up and down. The top of the valve body 1 is provided with a mounting bracket 8 for mounting the drive assembly. The mounting bracket 8 is provided with a lifting channel for the valve stem 4 to move up and down. A sealing assembly is provided between the valve body 1 and the valve plate 3.

[0025] The sealing assembly includes a U-shaped skeleton rubber pad 7 connected to the side edge of the valve plate 3. A U-shaped round steel plate 14 is installed on the outer edge of the U-shaped skeleton rubber pad 7. Several threaded holes are opened on the outer peripheral plate 15 of the valve body. Adjusting bolts 16 are installed in the threaded holes. The inner end face of the adjusting bolts 16 abuts against the outer side of the U-shaped round steel plate 14. The sealing between the valve body 1 and the valve plate 3 is adjusted by tightening or loosening the U-shaped skeleton rubber pad 7 by turning the adjusting bolts 16.

[0026] The valve body 1 has two limiting blocks 18 on its inner sides that contact the side of the valve plate 3 and limit the valve plate 3 horizontally. The limiting blocks 18 and the valve plate 3 are separated by a gap, so that the valve plate 3 can be slightly adjusted inside the valve body 1.

[0027] A groove for installing a U-shaped skeleton rubber pad 7 is provided on the valve body 1 located outside the limiting block 18. A downward limiting groove 17 is provided on the top inner surface of the U-shaped skeleton rubber pad 7. A gap is also provided between the limiting block 18 and the U-shaped skeleton rubber pad 7, which can ensure that the U-shaped skeleton rubber pad 7 can be adjusted between the valve body 1 and the valve plate 3, and ensure the sealing between the valve body 1 and the valve plate 3.

[0028] The top of the valve body 1 has a long slot, in which a rubber strip 11, a pressure strip 12 and a pressure plate are installed in sequence. The pressure strip 12 and the rubber strip 11 are pressed together by fasteners 13 so that the rubber strip 11 contacts the surface of the valve plate 3 to ensure the sealing between the top of the valve body 1 and the valve plate 3.

[0029] The valve body 1 is equipped with a valve body feed panel 9 and a valve body discharge panel 10. The valve body feed panel 9 and the valve body discharge panel 10 are located on both sides of the valve plate 3. The inner diameter of the feed port on the valve body feed panel 9 is smaller than the inner diameter of the material cylinder 2.

[0030] Since the diameter of the feed port on the valve body feed panel 9 is smaller than the inner diameter of the material cylinder 2 along the feeding direction, according to the principle of fluid mechanics, impurities are difficult to accumulate in the space formed by the valve body feed panel 9, the valve body discharge panel 10 and the material cylinder 2 between them. This prevents dust from entering the gap between the limiting block 18 and the U-shaped skeleton rubber pad 7, allowing the U-shaped skeleton rubber pad 7 to float normally.

[0031] In this embodiment, the driving component includes an electric push rod 5, which drives the valve stem 4 to move up and down to achieve the lifting and lowering of the valve plate 3. In other embodiments, other structures that can drive the valve stem 4 to lift and lower can be selected according to actual needs, such as hydraulic push rods.

[0032] This utility model provides a zero-leakage double-layer ash discharge valve. By setting two valve body units, one valve body unit is used to block most of the material, and the other valve body unit is used to allow dust to pass through during the material discharge process, which improves the sealing performance of the ash discharge valve. Moreover, when the first valve body unit is damaged, the damaged valve body unit can be repaired, and the other valve body unit is in working condition, which does not affect the use of the valve body, thus improving the working efficiency of the ash discharge valve. At the same time, by setting a U-shaped skeleton rubber gasket and rubber strips to fully seal the valve body and valve plate, the sealing performance between the valve plate and the valve body is improved, and leakage is avoided.

[0033] This utility model also provides a valve body feed panel and a valve body discharge panel on the inside of the valve body. The inner diameter of the feed port on the valve body feed panel is smaller than the inner diameter of the material cylinder. The protection of the two side panels intercepts dust and impurities in the material, preventing dust from entering the gap between the limit block and the U-shaped skeleton rubber pad and damaging the sealing performance of the valve body.

Claims

1. A zero-leakage double-layer ash discharge valve, characterized in that: The system includes a material cylinder (2) and two valve body units (19) installed on the material cylinder (2) and spaced apart by connecting flanges (6); each valve body unit (19) includes a valve body (1), a valve plate (3) installed inside the valve body (1), a valve stem (4), and a drive assembly for driving the valve stem (4) to move the valve plate (3) up and down; a sealing assembly is provided between the valve body (1) and the valve plate (3); the sealing assembly includes a U-shaped skeleton rubber pad (7) installed between the outer side of the valve plate (3) and the valve body (1) and a rubber strip (11) installed between the top of the valve body (1) and the top of the valve plate (3); a valve body feed panel (9) and a valve body discharge panel (10) are respectively provided inside the valve body (1), the valve body feed panel (9) and the valve body discharge panel (10) are respectively located on both sides of the valve plate (3), and the inner diameter of the feed port on the valve body feed panel (9) is smaller than the inner diameter of the material cylinder (2).

2. The zero-leakage double-layer ash discharge valve according to claim 1, characterized in that: The outer edge of the U-shaped skeleton rubber pad (7) is fitted with a U-shaped round steel plate (14). The valve body (1) has several threaded holes on its outer peripheral plate (15). An adjusting bolt (16) is installed in the threaded hole, and the inner end face of the adjusting bolt (16) abuts against the outer side of (14).

3. The zero-leakage double-layer ash discharge valve according to claim 2, characterized in that: The upper sides of the valve body (1) are respectively provided with limiting blocks (18) that contact the side of the valve plate (3) and limit the valve plate (3) horizontally. There is a gap between the limiting blocks (18) and the valve plate (3). The valve body (1) located outside the limiting blocks (18) has a groove for installing a U-shaped skeleton rubber pad (7). The inner top surface of the U-shaped skeleton rubber pad (7) has a limiting groove (17) that matches the limiting blocks (18). There is also a gap between the limiting blocks (18) and the U-shaped skeleton rubber pad (7).

4. The zero-leakage double-layer ash discharge valve according to claim 1, characterized in that: The valve body (1) has a long slot at the top that is fitted with a rubber strip (11). A pressure strip (12) connected to the rubber strip (11) is also installed in the slot. A pressure plate is provided on the outside of the pressure strip (12). The pressure plate presses the pressure strip (12) and the rubber strip (11) together with fasteners (13).

5. The zero-leakage double-layer ash discharge valve according to claim 1, characterized in that: The drive assembly includes an electric push rod (5), and the top of the valve body (1) is provided with a mounting bracket (8) for mounting the drive assembly. A lifting channel for the valve stem (4) to rise and fall is provided between the mounting brackets (8).

Images