A sealing valve for a pyrolysis furnace

Abstract

This utility model relates to the field of sealing valves, and more particularly to a sealing valve for a pyrolysis furnace. The valve body has a valve plate in the valve cavity, and spring scrapers are installed at both ends of the outer side of the valve plate, pressing and adhering to the inner wall of the valve cavity. In this utility model, flexible spring scraper mechanisms are provided on both sides of the valve plate. With the opening and closing rotation of the valve plate, these mechanisms adaptively adhere to the valve cavity and scrape off coke adhering to the sealing interface of the valve cavity. The resulting trace amounts of coke ash are drawn in by the negative pressure generated in the jet nozzle for centralized discharge, improving the maintenance efficiency of the valve body and effectively solving valve mechanical failures caused by coking.

Description

Technical Field

[0001] This utility model relates to the field of sealing valve technology, and in particular to a sealing valve for a pyrolysis furnace. Background Technology

[0002] A pyrolysis furnace is an industrial device that uses high temperatures to break the chemical bonds of large organic molecules, converting them into smaller molecule products. Its core function is to achieve efficient conversion of organic matter by controlling temperature, pressure, and heat transfer processes. It is widely used in petrochemical, coal chemical, biomass utilization, and waste treatment industries.

[0003] In a pyrolysis furnace, coking is an unavoidable byproduct of chemical reaction. Some media undergo deep pyrolysis within the valve body, and some macromolecules condense into coke and adhere to the valve body sealing interface. Traditional equipment requires regular disassembly and maintenance of the valve body to ensure its normal operation, which is a cumbersome process and affects the valve body's operating efficiency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sealing valve for a pyrolysis furnace.

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

[0006] A sealing valve for a pyrolysis furnace includes a valve body, a valve plate is provided in the valve cavity of the valve body, and spring scrapers are installed at both ends of the outer side of the valve plate, the spring scrapers are pressed and fitted against the inner wall of the valve cavity.

[0007] Support seats are installed at the upper and lower ends of the middle part of the valve plate. The support seats are in pressure contact with the inner wall of the valve body and valve cavity. Release grooves are opened at both ends of the bottom support seat, and multiple flow grooves are opened at the bottom away from the release grooves.

[0008] An air jet is installed on one side of the bottom of the valve body. A hand valve is installed at one end of the air jet, and an air inlet is installed at the other end. The air jet is connected to the air chamber opened at the bottom of the valve body. The top of the air chamber is connected to the valve chamber in the middle of the valve plate through multiple flow grooves.

[0009] Furthermore, in a preferred configuration, a valve stem is mounted in the middle of the valve body, and the valve stem is connected to the valve plate to drive the valve plate to perform opening and closing actions.

[0010] In addition, a preferred structure is that multiple sliding grooves are provided on the outer two sides of the valve plate, and the sliding grooves are connected to the slider limiter provided on the inner wall of the spring scraper.

[0011] In addition, a preferred structure is that a U-shaped elastic strip is installed in the middle of the slider, and the two ends of the U-shaped elastic strip are respectively connected to the slide groove and the valve plate.

[0012] In addition, a preferred structure is that an air chamber is provided inside the bottom side of the valve body, and the air chamber is connected to the jet cylinder by an inclined and slightly inclined groove, with the inclined direction of the groove facing the hand valve position on the jet cylinder side.

[0013] Furthermore, in a preferred configuration, in its natural state, the support seat at the bottom of the valve plate is placed on the flow groove. When the valve plate is rotated open, the release groove on the outer wall of the support seat overlaps with the flow groove at a horizontal plane and is connected vertically.

[0014] The beneficial effects of this utility model are as follows:

[0015] In this invention, flexible spring scraper mechanisms are provided on both sides of the valve plate. As the valve plate rotates and opens, the scraper mechanism can adaptively fit into the valve cavity and scrape off the coke adhering to the sealing interface of the valve cavity. The small amount of coke produced is sucked up by the negative pressure generated in the jet tube for centralized discharge, which improves the maintenance efficiency of the valve body and effectively solves the valve mechanical failure caused by coking. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a sealing valve for a pyrolysis furnace proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the valve plate structure proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the air cavity structure proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the spring scraper structure proposed in this utility model;

[0020] Figure 5 This is a schematic diagram of the flow channel and support structure proposed in this utility model.

[0021] In the figure: 1 Valve body, 11 Valve stem, 12 Valve plate, 121 Support seat, 2 Jet tube, 21 Air chamber, 22 Flow groove, 3 Spring scraper, 31 U-shaped elastic strip, 4 Slide groove, 5 Slider, 6 Release groove, 7 Inclined groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-5A sealing valve for a pyrolysis furnace includes a valve body 1, a valve plate 12 is provided in the valve cavity of the valve body 1, and spring scrapers 3 are installed at both ends of the outer side of the valve plate 12, and the spring scrapers 3 are pressed and adhered to the inner wall of the valve cavity.

[0024] Valve plate 12 is a standard feature of the valve body, used to control the flow path opening and closing; the specific connection structure will not be explained further.

[0025] Support seats 121 are installed at the upper and lower ends of the middle part of the valve plate 12. The support seats 121 are in contact with the inner wall of the valve cavity of the valve body 1. Release grooves 6 are provided at both ends of the bottom support seat 121, and multiple flow grooves 22 are provided below away from the release grooves 6.

[0026] A jet tube 2 is installed on one side of the bottom of the valve body 1. A hand valve is installed at one end of the jet tube 2. The hand valve can be purchased and installed directly from the market and will not be explained further.

[0027] The other end is equipped with an air inlet. The air jet 2 is connected to the air chamber 21 opened at the bottom of the valve body 1. The top of the air chamber 21 is connected to the valve chamber in the middle of the valve plate 12 through multiple flow grooves 22.

[0028] The air inlet is used to connect to an external air source.

[0029] A valve stem 11 is installed in the middle of the valve body 1. The valve stem 11 is connected to the valve plate 12 to drive the valve plate 12 to perform opening and closing actions.

[0030] Multiple grooves 4 are provided on the outer sides of the valve plate 12, and the grooves 4 are connected to the slider 5 provided on the inner wall of the spring scraper 3 for limiting.

[0031] A U-shaped elastic strip 31 is installed in the middle of the slider 5, and the two ends of the U-shaped elastic strip 31 are connected to the slide groove 4 and the valve plate 12 respectively.

[0032] The U-shaped structure causes the U-shaped elastic strip 31 to undergo tensile deformation when the spring scraper 3 moves, and the opening of the U-shaped structure stretches to accommodate the displacement of the spring scraper 3.

[0033] Both the U-shaped elastic strip 31 and the spring scraper 3 are made of spring steel and have good flexibility.

[0034] An air chamber 21 is provided inside the bottom side of the valve body 1. The air chamber 21 is connected to the jet tube 2 by an inclined and slightly inclined groove 7. The inclined direction of the inclined groove 7 is towards the hand valve position on the side of the jet tube 2.

[0035] In its natural state, the support seat 121 at the bottom of the valve plate 12 covers the flow groove 22. When the valve plate 12 is rotated open, the release groove 6 opened on the outer wall of the support seat 121 overlaps with the flow groove 22 at the horizontal plane and is connected vertically.

[0036] In this embodiment, during the process of the valve stem 11 driving the valve plate 12 to rotate and realize the opening and closing of the flow channel, the spring scraper 3 provided on the outer wall of the valve plate 12 is squeezed and rubbed against the flow channel (valve cavity) on the inner wall of the valve body 1, and scrapes off any coking that may exist on the opening range (sealing interface) of the valve plate 12. The scraped impurities fall to the bottom of the valve cavity.

[0037] Then, the valve plate 12 is rotated completely until it can no longer rotate, which is the end of the rotation stroke. At this time, the valve plate 12 drives the support seat 121 at its bottom to rotate. The release groove 6 on the outside of the support seat 121 generates rotational displacement after rotation and connects with a pair of flow grooves 22 on the bottom wall of the valve cavity of the valve body 1. At this time, the external air source is connected to the jet cylinder 2, the hand valve on the other side of the jet cylinder 2 is opened, and high-speed compressed gas is inserted into the jet cylinder 2. The gas flows rapidly inside the jet cylinder 2 and generates negative pressure at the inclined groove 7. The negative pressure drives the gas in the air chamber 21 and the flow groove 22 to flow and suck up the coke that falls to the bottom of the valve cavity. The coke enters the jet cylinder 2 through the flow groove 22, the air chamber 21, and the inclined groove 7, and is discharged from the jet cylinder 2 under the high-speed airflow, completing the coke discharge operation.

[0038] In practical applications, the support seat 121 is always covered on the flow groove 22 to ensure sealing until the support seat 121 is rotated and its external release groove 6 is connected to the flow groove 22.

[0039] The spring scraper 3 is in close contact with the inner wall of the valve cavity. After the coke is scraped off, it temporarily accumulates at the bottom of the valve cavity. The amount of coke scraped off at one time is very small, and the fallen coke ash is enough to be absorbed and collected.

[0040] The spring scraper 3 deforms when it comes into contact with the inner wall of the valve cavity, so as to better adhere to the inner wall of the valve cavity and ensure the scraping efficiency.

[0041] It should be noted that coke scraping does not occur during the flow of the medium.

[0042] During normal use of the valve body 1, the support seat 121 always covers the flow groove 22. Only after the valve plate 3 is completely deflected, i.e. during maintenance operations, does the flow groove 22 flow into the valve cavity.

[0043] Valve body 1, i.e., the sealing valve body, is used in the pyrolysis furnace.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sealing valve for a pyrolysis furnace, comprising a valve body (1), characterized in that, The valve body (1) has a valve plate (12) in the valve cavity. Spring scrapers (3) are installed at both ends of the outer side of the valve plate (12) and are pressed and adhered to the inner wall of the valve cavity. The valve plate (12) is equipped with support seats (121) at the upper and lower ends of the middle part. The support seats (121) are in contact with the inner wall of the valve cavity of the valve body (1). Release grooves (6) are provided at both ends of the bottom support seat (121), and multiple flow grooves (22) are provided below away from the release grooves (6). A jet tube (2) is installed on one side of the bottom of the valve body (1). A hand valve is installed at one end of the jet tube (2), and an air inlet is installed at the other end. The jet tube (2) is connected to the air chamber (21) opened at the bottom of the valve body (1). The top of the air chamber (21) is connected to the valve chamber in the middle of the valve plate (12) through multiple flow grooves (22).

2. A sealing valve for a pyrolysis furnace according to claim 1, characterized in that, A valve stem (11) is installed in the middle of the valve body (1), and the valve stem (11) is connected to the valve plate (12) to drive the valve plate (12) to perform opening and closing actions.

3. A sealing valve for a pyrolysis furnace according to claim 1, characterized in that, Multiple grooves (4) are provided on the outer sides of the valve plate (12), and the grooves (4) are limited and connected to the slider (5) provided on the inner wall of the spring scraper (3).

4. A sealing valve for a pyrolysis furnace according to claim 3, characterized in that, A U-shaped elastic strip (31) is installed in the middle of the slider (5), and the two ends of the U-shaped elastic strip (31) are connected to the slide groove (4) and the valve plate (12) respectively.

5. A sealing valve for a pyrolysis furnace according to claim 1, characterized in that, The valve body (1) has an air chamber (21) inside its bottom side. The air chamber (21) is connected to the jet tube (2) by an inclined and slightly inclined groove (7). The inclined direction of the inclined groove (7) is towards the hand valve position on the side of the jet tube (2).

6. A sealing valve for a pyrolysis furnace according to claim 1, characterized in that, In its natural state, the support seat (121) at the bottom of the valve plate (12) covers the flow groove (22). When the valve plate (12) is rotated open, the release groove (6) on the outer wall of the support seat (121) overlaps with the flow groove (22) on a horizontal plane and is connected vertically.

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