High pressure seal choke valve

Abstract

The utility model discloses a high pressure seal material blocking valve, include: main valve body, auxiliary valve body, drive mechanism, valve seat, main shaft, drive mechanism sets up in valve body cavity, including carousel, up and down material blocking board, up and down 2 drive shafts, up and down 2 rotating shafts, up and down material blocking board symmetrical setting is in the up and down both sides of carousel, and forms medium passage between up and down material blocking board, and the downside drive shaft is fixed on the carousel with up and down 2 rotating shafts, and the carousel upside sets up sliding groove, and the upside drive shaft slides in the sliding groove. Up and down material blocking board sets up respectively with 2 axle holes of cooperation with rotating shaft and drive shaft, and the upside drive shaft is connected with the spring of carousel. The utility model discloses equipment occupies small, and the seal is tight, and effectively avoids the seal surface wear and tear caused by clamping material.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a high-pressure sealing baffle valve. Background Technology

[0002] In the material conveying process, the baffle valve plays a crucial role, primarily used to regulate or cut off the material flow, ensuring that the material enters different process sections according to the set process requirements. A gas-based vertical shaft furnace is a piece of equipment used for the production of gas-based direct reduced iron (DRI). To ensure the reaction environment inside the furnace, a high gas pressure is typically maintained to improve the reduction rate and metal yield. However, due to the high gas pressure within the furnace system, ordinary baffle valves are prone to problems such as poor sealing and gas leakage during operation. This not only affects the stability of the reduction reaction but may also lead to energy waste and even safety hazards. Therefore, how to achieve reliable sealing under high-pressure conditions and ensure the stability of material flow is the core technical challenge in the design of baffle valves for gas-based vertical shaft furnaces.

[0003] Currently, several technical solutions exist for baffle valves operating in high-pressure gas environments. Ordinary baffle valves employ traditional flapper or sliding plate structures. Due to long-term wear on their sealing surfaces, their sealing performance gradually declines, making them prone to gas leakage under high pressure, thus affecting the stability of the furnace atmosphere. Therefore, the sealing performance of ordinary baffle valves is problematic. The dual-valve tandem sealing structure uses two baffle valves arranged in series to form a double seal. However, this solution is structurally complex, occupies a large space, and is difficult to maintain and repair. It also suffers from material wear within the valve seat sealing surface. Therefore, while the dual-valve tandem sealing structure solves the sealing problem, it introduces additional issues such as material wear within the valve seat sealing surface and a large space requirement. Summary of the Invention

[0004] The purpose of this invention is to provide a high-pressure sealing baffle valve to at least partially solve the above-mentioned problems of the prior art.

[0005] To achieve the above objectives, this utility model provides a high-pressure sealing baffle valve, comprising a main valve body 001, a secondary valve body 002, a drive mechanism 003, a valve seat 004, and a main shaft 005;

[0006] The main valve body 001 and the auxiliary valve body 002 are fixedly connected by screws or flanges to form a medium channel from top to bottom, and a valve body cavity is formed between the upper and lower valve seats.

[0007] The drive mechanism 003 is located inside the valve body cavity and includes a turntable 302, upper and lower baffle plates 301, two upper and lower drive shafts 303, and two upper and lower rotating shafts 3021. The sealing surfaces of the upper and lower baffle plates 301 include spherical, cylindrical, and conical shapes. The upper and lower baffle plates are symmetrically arranged on the upper and lower sides of the turntable 302, and a medium channel is formed between the upper and lower baffle plates.

[0008] The main shaft 005 is fixedly connected to the turntable 302. The lower drive shaft 303 and the two upper and lower rotating shafts 3021 are fixed on the turntable 302. A sliding groove is provided on the upper side of the turntable 302, and the upper drive shaft 303 slides in the sliding groove.

[0009] The upper and lower baffle plates 301 are respectively provided with two shaft holes that cooperate with the rotating shaft 3021 and the drive shaft 303. The upper drive shaft 303 is connected to the turntable 302 by a spring 304. The spring connected to the upper drive shaft provides elastic force to resist the medium force. When the solid medium is stuck in the gap between the upper baffle plate and the medium channel, the upper drive shaft moves downward along the sliding groove, driving the upper baffle plate to move downward. At the same time, the spring provides elastic force through the drive shaft to the upper baffle plate to clamp the solid medium.

[0010] Preferably, it further includes: a lower sliding groove symmetrical to the upper sliding groove is provided on the lower side of the turntable 302, the lower drive shaft 303 slides in the lower sliding groove, the lower drive shaft 303 is connected to the turntable 302 by a spring 304, and the spring connected to the lower drive shaft provides elastic sealing of the lower channel.

[0011] Preferably, the spindle 005 and the turntable 302 are fixedly connected by a key.

[0012] Compared with the prior art, the present invention has at least the following advantages:

[0013] This invention employs a double-layer baffle structure, ensuring a tight seal on the baffle valve. Furthermore, by incorporating an upper drive shaft that slides along the sliding groove and a highly elastic spring, the upper baffle has a yielding mechanism to prevent wear caused by forced compression when solid particles become trapped in the gap. Simultaneously, the sufficiently large spring force can clamp the solid particles, maintaining a seal for the solid medium. This design occupies less space compared to a dual-valve tandem sealing structure. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the material stop valve structure of this utility model.

[0015] Figure 2 This is a rear view of the drive mechanism of this utility model.

[0016] Figure 3 This is a schematic diagram of the drive mechanism structure of this utility model.

[0017] In the diagram: 001: Main valve body; 002: Secondary valve body; 003: Drive mechanism; 004: Valve seat; 005: Main shaft; 301: Baffle plate; 302: Turntable; 303: Drive shaft; 304: High-elasticity spring; 3021: Rotating shaft Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate to understand the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a product or device comprising a series of units is not necessarily limited to those explicitly listed, but may include other units not explicitly listed or inherent to such product or device.

[0020] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0021] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0022] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Example 1

[0025] like Figure 1 As shown, this utility model provides a high-pressure sealing baffle valve, including a main valve body 001, a secondary valve body 002, a drive mechanism 003, a valve seat 004, and a main shaft 005;

[0026] The main valve body 001 and the auxiliary valve body 002 are fixedly connected by screws or flanges to form a medium channel from top to bottom, and a valve body cavity is formed between the upper and lower valve seats.

[0027] like Figure 2 As shown, the drive mechanism 003 is located inside the valve body cavity and includes a turntable 302, upper and lower baffle plates 301, two upper and lower drive shafts 303, and two upper and lower rotating shafts 3021. The sealing surfaces of the upper and lower baffle plates 301 include spherical, cylindrical, and conical shapes. The sealing surface of the upper baffle plate is the contact surface between the baffle plate and the upper valve seat 004, and the sealing surface of the lower baffle plate is the contact surface between the baffle plate and the lower valve seat 004. All the sealing surfaces of the baffle plates are coated with high-temperature wear-resistant alloy. The upper and lower baffle plates are symmetrically arranged on the upper and lower sides of the turntable 302, and a medium channel is formed between the upper and lower baffle plates.

[0028] like Figure 2 , Figure 3 As shown, the main shaft 005 is fixedly connected to the turntable 302. The main shaft drives the drive mechanism to rotate under the action of external driving force. The external driving force refers to the crank-connecting rod mechanism driven by pneumatic, electric actuators or hydraulic cylinders, which is not shown in the figure. The lower drive shaft 303 and the two upper and lower rotating shafts 3021 are fixed on the turntable 302. A sliding groove is provided on the upper side of the turntable 302, and the upper drive shaft 303 slides in the sliding groove.

[0029] like Figure 2 , Figure 3 As shown, the upper and lower baffle plates 301 are respectively provided with two shaft holes that cooperate with the rotating shaft 3021 and the drive shaft 303. The upper drive shaft 303 is connected to the turntable 302 by a spring 304. The spring connected to the upper drive shaft provides elastic force to resist the medium force. When the solid medium is stuck in the gap between the upper baffle plate and the medium channel, the upper drive shaft moves downward along the sliding groove, driving the upper baffle plate to move downward. At the same time, the spring provides elastic force to be transmitted to the upper baffle plate through the drive shaft to clamp the solid medium.

[0030] Material-blocking sealing principle: Because the gas-based vertical shaft furnace contains a solid medium accompanied by high-pressure gas, and the medium flows from top to bottom, taking the direction shown in the diagram as an example, when the valve is closed, the high-pressure side is above the upper material-blocking plate, and the medium force applies downward pressure. The high-elasticity spring of the upper material-blocking plate provides a sufficiently large sealing force to counteract the medium force, ensuring sufficient sealing specific pressure through design; the lower material-blocking plate simultaneously ensures sealing, achieving a double-layer seal on the lower valve seat sealing surface, providing redundant sealing when the upper valve seat sealing surface fails. Compared with existing shut-off ball valves, which have a fixed gap at the valve seat, when solid particles get stuck in the gap, the valve opening and closing action is only achieved by crushing, which has an adverse effect on the alloy layer of the sealing surface and the operating torque. This utility model, by setting a drive shaft that slides along the sliding groove and a high-elasticity spring, allows the upper material-blocking plate to have a yielding property when solid particles get stuck in the gap, avoiding wear caused by hard squeezing, while the sufficiently large spring force can clamp the solid particles, still achieving a seal for the solid medium.

[0031] Example 2

[0032] like Figure 1 As shown, this utility model provides a high-pressure sealing baffle valve, including a main valve body 001, a secondary valve body 002, a drive mechanism 003, a valve seat 004, and a main shaft 005;

[0033] The main valve body 001 and the auxiliary valve body 002 are fixedly connected by a flange to form a medium channel from top to bottom, and a valve body cavity is formed between the upper and lower valve seats.

[0034] like Figure 2 As shown, the drive mechanism 003 is located inside the valve body cavity and includes a turntable 302, upper and lower baffle plates 301, two upper and lower drive shafts 303, and two upper and lower rotating shafts 3021. The sealing surfaces of the upper and lower baffle plates 301 are spherical. The sealing surface of the upper baffle plate is the contact surface between the baffle plate and the upper valve seat 004, and the sealing surface of the lower baffle plate is the contact surface between the baffle plate and the lower valve seat 004. The sealing surfaces of the baffle plates are all coated with high-temperature wear-resistant alloy. The upper and lower baffle plates are symmetrically arranged on the upper and lower sides of the turntable 302, and a medium channel is formed between the upper and lower baffle plates.

[0035] like Figure 2 , Figure 3 As shown, the main shaft 005 is fixedly connected to the turntable 302 by a key connection. The main shaft drives the drive mechanism to rotate under the action of an external driving force. The external driving force refers to a crank-connecting rod mechanism driven by a pneumatic, electric, or hydraulic cylinder, which is not shown in the figure. The lower drive shaft 303 and the two upper and lower rotating shafts 3021 are fixed on the turntable 302. A sliding groove is provided on the upper side of the turntable 302, and the upper drive shaft 303 slides in the sliding groove.

[0036] like Figure 2 , Figure 3 As shown, the upper and lower baffle plates 301 are respectively provided with two shaft holes that cooperate with the rotating shaft 3021 and the drive shaft 303. The upper drive shaft 303 is connected to the turntable 302 by a spring 304. The spring connected to the upper drive shaft provides elastic force to resist the medium force. When the solid medium is stuck in the gap between the upper baffle plate and the medium channel, the upper drive shaft moves downward along the sliding groove, driving the upper baffle plate to move downward. At the same time, the spring provides elastic force to be transmitted to the upper baffle plate through the drive shaft to clamp the solid medium.

[0037] Material-blocking sealing principle: Because the gas-based vertical shaft furnace contains a solid medium accompanied by high-pressure gas, and the medium flows from top to bottom, taking the direction shown in the diagram as an example, when the valve is closed, the high-pressure side is above the upper material-blocking plate, and the medium force applies downward pressure. The high-elasticity spring of the upper material-blocking plate provides a sufficiently large sealing force to counteract the medium force, ensuring sufficient sealing specific pressure through design; the lower material-blocking plate simultaneously ensures sealing, achieving a double-layer seal on the lower valve seat sealing surface, providing redundant sealing when the upper valve seat sealing surface fails. Compared with existing shut-off ball valves, which have a fixed gap at the valve seat, when solid particles get stuck in the gap, the valve opening and closing action is only achieved by crushing, which has an adverse effect on the alloy layer of the sealing surface and the operating torque. This utility model, by setting a drive shaft that slides along the sliding groove and a high-elasticity spring, allows the upper material-blocking plate to have a yielding property when solid particles get stuck in the gap, avoiding wear caused by hard squeezing, while the sufficiently large spring force can clamp the solid particles, still achieving a seal for the solid medium.

[0038] Example 3

[0039] Preferred, such as Figure 1 As shown, this utility model provides a high-pressure sealing baffle valve, including a main valve body 001, a secondary valve body 002, a drive mechanism 003, a valve seat 004, and a main shaft 005;

[0040] The main valve body 001 and the auxiliary valve body 002 are fixedly connected by screws to form a medium channel from top to bottom, and a valve body cavity is formed between the upper and lower valve seats.

[0041] like Figure 2 As shown, the drive mechanism 003 is located inside the valve body cavity and includes a turntable 302, upper and lower baffle plates 301, two upper and lower drive shafts 303, and two upper and lower rotating shafts 3021. The sealing surfaces of the upper and lower baffle plates 301 are cylindrical. The sealing surface of the upper baffle plate is the contact surface between the baffle plate and the upper valve seat 004, and the sealing surface of the lower baffle plate is the contact surface between the baffle plate and the lower valve seat 004. The sealing surfaces of the baffle plates are all coated with high-temperature wear-resistant alloy. The upper and lower baffle plates are symmetrically arranged on the upper and lower sides of the turntable 302, and a medium channel is formed between the upper and lower baffle plates.

[0042] like Figure 2 , Figure 3 As shown, the main shaft 005 is fixedly connected to the turntable 302 by welding. The main shaft drives the drive mechanism to rotate under the action of external driving force. The external driving force refers to the crank-connecting rod mechanism driven by a pneumatic, electric actuator or hydraulic cylinder, which is not shown in the figure. The lower drive shaft 303 and the two upper and lower rotating shafts 3021 are fixed on the turntable 302. A sliding groove is provided on the upper side of the turntable 302, and the upper drive shaft 303 slides in the sliding groove.

[0043] like Figure 2 , Figure 3 As shown, the upper and lower baffle plates 301 are respectively provided with two shaft holes that cooperate with the rotating shaft 3021 and the drive shaft 303. The upper drive shaft 303 is connected to the turntable 302 by a spring 304. The spring connected to the upper drive shaft provides elastic force to resist the medium force. When the solid medium is stuck in the gap between the upper baffle plate and the medium channel, the upper drive shaft moves downward along the sliding groove, driving the upper baffle plate to move downward. At the same time, the spring provides elastic force to be transmitted to the upper baffle plate through the drive shaft to clamp the solid medium.

[0044] like Figure 2 , Figure 3 As shown, a lower sliding groove symmetrical to the upper sliding groove is provided on the lower side of the turntable 302. The lower drive shaft 303 slides in the lower sliding groove. The lower drive shaft 303 is connected to the turntable 302 by a spring 304. The spring connected to the lower drive shaft provides elastic sealing of the lower channel.

[0045] Material-blocking sealing principle: Because the gas-based vertical shaft furnace contains a solid medium accompanied by high-pressure gas, and the medium flows from top to bottom, taking the direction shown in the diagram as an example, when the valve is closed, the high-pressure side is above the upper material-blocking plate, and the medium force applies downward pressure. The high-elasticity spring of the upper material-blocking plate provides a sufficiently large sealing force to counteract the medium force, ensuring sufficient sealing specific pressure through design; the high-elasticity spring of the lower material-blocking plate provides a sufficiently large sealing force to achieve double-layer sealing of the lower valve seat sealing surface, ensuring redundant sealing when the upper valve seat sealing surface fails. Compared with existing shut-off ball valves, existing ball valves have a fixed gap at the valve seat. When solid particles get stuck in the gap, the valve opening and closing action is only achieved by crushing them, which has an adverse effect on the alloy layer of the sealing surface and the operating torque. This invention features a drive shaft that slides along a sliding groove and a highly elastic spring. When solid particles are trapped in the gap, the upper baffle plate has a yielding property to prevent wear caused by hard squeezing. At the same time, the sufficiently large spring force can clamp the solid particles, thus still achieving a seal for solid media. The seal for gaseous media is achieved through the lower valve seat.

[0046] Example 4

[0047] like Figure 1As shown, this utility model provides a high-pressure sealing baffle valve, including a main valve body 001, a secondary valve body 002, a drive mechanism 003, a valve seat 004, and a main shaft 005;

[0048] The main valve body 001 and the auxiliary valve body 002 are fixedly connected by screws to form a medium channel from top to bottom, and a valve body cavity is formed between the upper and lower valve seats.

[0049] The drive mechanism 003 is located inside the valve body cavity and includes a turntable 302, upper and lower baffle plates 301, two upper and lower drive shafts 303, and two upper and lower rotating shafts 3021. The sealing surfaces of the upper and lower baffle plates 301 are conical. The sealing surface of the upper baffle plate is the contact surface between the baffle plate and the upper valve seat 004, and the sealing surface of the lower baffle plate is the contact surface between the baffle plate and the lower valve seat 004. The sealing surfaces of the baffle plates are all coated with high-temperature wear-resistant alloy. The upper and lower baffle plates are symmetrically arranged on the upper and lower sides of the turntable 302, and a medium channel is formed between the upper and lower baffle plates.

[0050] like Figure 2 , Figure 3 As shown, the main shaft 005 is fixedly connected to the turntable 302 by a key connection. The main shaft drives the drive mechanism to rotate under the action of an external driving force. The external driving force refers to a crank-connecting rod mechanism driven by a pneumatic, electric, or hydraulic cylinder, which is not shown in the figure. The lower drive shaft 303 and the two upper and lower rotating shafts 3021 are fixed on the turntable 302. A sliding groove is provided on the upper side of the turntable 302, and the upper drive shaft 303 slides in the sliding groove.

[0051] like Figure 2 , Figure 3 As shown, the upper and lower baffle plates 301 are respectively provided with two shaft holes that cooperate with the rotating shaft 3021 and the drive shaft 303. The upper drive shaft 303 is connected to the turntable 302 by a spring 304. The spring connected to the upper drive shaft provides elastic force to resist the medium force. When the solid medium is stuck in the gap between the upper baffle plate and the medium channel, the upper drive shaft moves downward along the sliding groove, driving the upper baffle plate to move downward. At the same time, the spring provides elastic force to be transmitted to the upper baffle plate through the drive shaft to clamp the solid medium.

[0052] like Figure 2 , Figure 3 As shown, a lower sliding groove symmetrical to the upper sliding groove is provided on the lower side of the turntable 302. The lower drive shaft 303 slides in the lower sliding groove. The lower drive shaft 303 is connected to the turntable 302 by a spring 304. The spring connected to the lower drive shaft provides elastic sealing of the lower channel.

[0053] Material-blocking sealing principle: Because the gas-based vertical shaft furnace contains a solid medium accompanied by high-pressure gas, and the medium flows from top to bottom, taking the direction shown in the diagram as an example, when the valve is closed, the high-pressure side is above the upper material-blocking plate, and the medium force applies downward pressure. The high-elasticity spring of the upper material-blocking plate provides a sufficiently large sealing force to counteract the medium force, ensuring sufficient sealing specific pressure through design; the high-elasticity spring of the lower material-blocking plate provides a sufficiently large sealing force to achieve double-layer sealing of the lower valve seat sealing surface, ensuring redundant sealing when the upper valve seat sealing surface fails. Compared with existing shut-off ball valves, existing ball valves have a fixed gap at the valve seat. When solid particles get stuck in the gap, the valve opening and closing action is only achieved by crushing them, which has an adverse effect on the alloy layer of the sealing surface and the operating torque. This invention features a drive shaft that slides along a sliding groove and a highly elastic spring. When solid particles are trapped in the gap, the upper baffle plate has a yielding property to prevent wear caused by hard squeezing. At the same time, the sufficiently large spring force can clamp the solid particles, thus still achieving a seal for solid media. The seal for gaseous media is achieved through the lower valve seat.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Those skilled in the art should understand that modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-pressure sealing baffle valve, characterized in that, include: Main valve body (001), secondary valve body (002), drive mechanism (003), valve seat (004), main shaft (005); The main valve body (001) and the auxiliary valve body (002) are fixedly connected by screws or flanges to form a medium channel from top to bottom, and a valve body cavity is formed between the upper and lower valve seats; The drive mechanism (003) is located inside the valve body cavity and includes a turntable (302), upper and lower baffles (301), two upper and lower drive shafts (303), and two upper and lower rotating shafts (3021). The sealing surfaces of the upper and lower baffles (301) include spherical, cylindrical, and conical shapes. The upper and lower baffles are symmetrically arranged on the upper and lower sides of the turntable (302), and a medium channel is formed between the upper and lower baffles. The main shaft (005) is fixedly connected to the turntable (302), and the lower drive shaft (303) and the two upper and lower rotating shafts (3021) are fixed on the turntable (302). A sliding groove is provided on the upper side of the turntable (302), and the upper drive shaft (303) slides in the sliding groove. The upper and lower baffles (301) are respectively provided with two shaft holes that cooperate with the rotating shaft (3021) and the drive shaft (303). The upper drive shaft (303) is connected to the turntable (302) by a spring (304). The spring connected to the upper drive shaft provides elastic force to resist the medium force. When the solid medium is stuck in the gap between the upper baffle and the medium channel, the upper drive shaft moves downward along the sliding groove, driving the upper baffle to move downward. At the same time, the spring provides elastic force to be transmitted to the upper baffle through the drive shaft to clamp the solid medium.

2. The high-pressure sealing baffle valve according to claim 1, characterized in that, Also includes: A lower sliding groove symmetrical to the upper sliding groove is provided on the lower side of the turntable (302). The lower drive shaft (303) slides in the lower sliding groove. The lower drive shaft (303) is connected to the turntable (302) by a spring (304). The spring connected to the lower drive shaft provides elastic sealing of the lower channel.

3. The high-pressure sealing baffle valve according to claim 1 or 2, characterized in that, The main spindle (005) and the turntable (302) are fixedly connected by a key.

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