High-pressure sealing material blocking valve

Abstract

The invention discloses a high-pressure sealing material blocking valve which comprises a main valve body, an auxiliary valve body, a driving mechanism, a valve seat and a main shaft. The driving mechanism is arranged in the valve body cavity and comprises a turntable, upper and lower striker plates, upper and lower driving shafts and upper and lower rotating shafts, the upper and lower striker plates are symmetrically arranged on the upper and lower sides of the turntable, and a medium channel is formed between the upper and lower striker plates; the lower driving shaft, the upper rotating shaft and the lower rotating shaft are fixed to the rotating disc, a sliding groove is formed in the upper side of the rotating disc, and the upper driving shaft slides in the sliding groove. The upper and lower striker plates are respectively provided with two shaft holes matched with the rotating shaft and the driving shaft, and the upper driving shaft and the turntable are connected with a spring. The device is small in occupied space and tight in sealing, and sealing face abrasion caused by material clamping is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, in particular to a high-pressure sealing material blocking valve. Background Art

[0002] In the material transportation process, the material stop valve plays a key role. It is mainly used to adjust or cut off the material flow to ensure that the material enters different process sections according to the set process requirements. The gas-based vertical furnace is a device used for the production of gas-based direct reduced iron (DRI). In order to ensure the reaction environment inside the vertical furnace, a higher gas pressure is usually maintained in the furnace to increase the reduction rate and metal yield. However, due to the high gas pressure in the vertical furnace system, ordinary material stop valves are prone to problems such as poor sealing and gas leakage during operation, which not only affects the stability of the reduction reaction, but may also lead to energy waste and even cause safety hazards. Therefore, how to achieve reliable sealing in a high-pressure environment and ensure the stability of material flow is the core technical problem in the design of gas-based vertical furnace material stop valves.

[0003] Currently, there are several technical solutions for retaining valves in high-pressure gas environments. Ordinary retaining valves use traditional flap or slide structures. Due to long-term wear on their sealing surfaces, their sealing performance gradually deteriorates. Gas leakage is prone to occur in high-pressure environments, affecting the stability of the furnace atmosphere. Therefore, the sealing performance of ordinary retaining valves is problematic. The dual-valve series sealing structure uses two retaining valves arranged in series to form a double seal. However, this solution is complex, occupies a large space, and is difficult to maintain and repair. Furthermore, there is a risk of material being trapped and worn on the valve seat sealing surface. Therefore, while the dual-valve series sealing structure solves the sealing problem, it also adds the problems of material being trapped on the valve seat sealing surface and the large space occupied. Summary of the Invention

[0004] The object of the present invention is to provide a high-pressure sealing material stop valve to at least partially solve the above-mentioned problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides a high-pressure sealing material stop valve, comprising a main valve body 001, an auxiliary valve body 002, a driving 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 driving mechanism 003 is arranged in the valve body cavity, including 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.

[0008] The main shaft 005 is fixedly connected to the turntable 302, the lower drive shaft 303 and the upper and lower rotating shafts 3021 are fixed on the turntable 302, and 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 axial holes that cooperate with the rotating shaft 3021 and the driving shaft 303. The upper driving shaft 303 is connected to the turntable 302 with a spring 304. The spring connected to the upper driving shaft provides elastic force to counteract the medium force. When the solid medium is stuck in the gap between the upper baffle plate and the medium channel, the upper driving shaft moves downward along the sliding groove, driving the upper baffle plate to move downward. At the same time, the spring provides elastic force that is transmitted to the upper baffle plate through the driving shaft to clamp the solid medium.

[0010] Preferably, it also includes: a lower sliding groove symmetrical to the upper sliding groove is set on the lower side of the turntable 302, the lower driving shaft 303 slides in the lower sliding groove, the lower driving shaft 303 is connected to the turntable 302 by a spring 304, and the spring connected to the lower driving shaft provides elastic force to seal the lower channel.

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

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

[0013] The present invention utilizes a double-layered retaining plate structure, ensuring a tight seal for the retaining valve. Furthermore, by providing an upper drive shaft that slides along a sliding groove and a highly elastic spring, the upper retaining plate provides a yielding mechanism when solid particles become lodged in the gap, preventing wear caused by forced extrusion. The sufficient spring force also provides a secure grip on the solid particles, while still achieving a seal for solid media. This design occupies less space than a dual-valve tandem sealing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the material blocking valve of the present invention.

[0015] Figure 2 It is the rear view of the driving mechanism of the present invention.

[0016] Figure 3 It is a schematic diagram of the driving mechanism structure of the present invention.

[0017] In the figure: 001: main valve body; 002: auxiliary valve body; 003: driving mechanism; 004: valve seat; 005: main shaft; 301: material blocking plate; 302: turntable; 303: driving shaft; 304: high elastic spring; 3021: rotating shaft DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0019] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to facilitate understanding of the embodiments of the present invention described herein. In addition, the terms "including," "comprising," and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a product or device comprising a series of elements is not necessarily limited to those elements explicitly listed, but may include other elements not explicitly listed or inherent to the product or device.

[0020] In the present invention, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0021] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0022] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0023] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] Example 1

[0025] like Figure 1 As shown, the present invention provides a high-pressure sealing material blocking valve, including a main valve body 001, an auxiliary valve body 002, a driving 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 driving mechanism 003 is arranged in the valve body cavity, including a turntable 302, upper and lower baffle plates 301, two upper and lower driving 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 baffle plate sealing surface is the contact surface between the baffle plate and the upper valve seat 004, and the lower baffle plate sealing surface 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.

[0028] like Figure 2 、 Figure 3 As shown, the main shaft 005 is fixedly connected to the turntable 302. The main shaft drives the driving 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 actuator or a hydraulic cylinder, which is not shown in the figure. The lower driving shaft 303 and the upper and lower rotating shafts 3021 are fixed to the turntable 302. A sliding groove is provided on the upper side of the turntable 302, and the upper driving 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 axial holes that cooperate with the rotating shaft 3021 and the driving shaft 303. The upper driving shaft 303 is connected to the turntable 302 with a spring 304. The spring connected to the upper driving shaft provides elastic force to counteract the medium force. When the solid medium is stuck in the gap between the upper baffle plate and the medium channel, the upper driving shaft moves downward along the sliding groove, driving the upper baffle plate to move downward. At the same time, the spring provides elastic force that is transmitted to the upper baffle plate through the driving shaft to clamp the solid medium.

[0030] Material retaining seal principle: Because the gas-based vertical furnace contains a solid medium accompanied by high-pressure gas, the medium flows from top to bottom. Therefore, taking the direction of the schematic diagram as an example, when the valve is in the closed state, the high-pressure side is above the upper retaining plate, and the medium force exerts downward pressure. The high-elasticity spring of the upper retaining plate provides a sufficiently large sealing force to counteract the medium force, ensuring a sufficient sealing pressure ratio through design; the lower retaining plate also ensures sealing, achieving a double-layer seal on the lower valve seat sealing surface, ensuring redundant sealing in the event of failure of the upper valve seat sealing surface. Compared with existing cut-off ball valves, existing ball valves have a fixed gap at the valve seat. When solid particles are stuck in the gap, they can only be crushed to achieve the valve opening and closing action, which will have an adverse effect on the alloy layer of the sealing surface and the operating torque. The present invention is provided with a drive shaft that slides along the sliding groove and a high-elasticity spring. When solid particles are stuck in the gap, the upper retaining plate has a yielding property to avoid wear caused by hard squeezing. At the same time, the sufficiently large spring force can clamp the solid particles, still achieving sealing of the solid medium.

[0031] Example 2

[0032] like Figure 1 As shown, the present invention provides a high-pressure sealing material blocking valve, including a main valve body 001, an auxiliary valve body 002, a driving 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 flanges 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 driving mechanism 003 is arranged in the valve body cavity, including a turntable 302, upper and lower baffle plates 301, two upper and lower driving 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, and the fixed connection method is a key connection. The main shaft drives the driving 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 actuator or a hydraulic cylinder, which is not shown in the figure. The lower driving shaft 303 and the upper and lower rotating shafts 3021 are fixed to the turntable 302. A sliding groove is provided on the upper side of the turntable 302, and the upper driving 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 axial holes that cooperate with the rotating shaft 3021 and the driving shaft 303. The upper driving shaft 303 is connected to the turntable 302 with a spring 304. The spring connected to the upper driving shaft provides elastic force to counteract the medium force. When the solid medium is stuck in the gap between the upper baffle plate and the medium channel, the upper driving shaft moves downward along the sliding groove, driving the upper baffle plate to move downward. At the same time, the spring provides elastic force that is transmitted to the upper baffle plate through the driving shaft to clamp the solid medium.

[0037] Material retaining seal principle: Because the gas-based vertical furnace contains a solid medium accompanied by high-pressure gas, the medium flows from top to bottom. Therefore, taking the direction of the schematic diagram as an example, when the valve is in the closed state, the high-pressure side is above the upper retaining plate, and the medium force exerts downward pressure. The high-elasticity spring of the upper retaining plate provides a sufficiently large sealing force to counteract the medium force, ensuring a sufficient sealing pressure ratio through design; the lower retaining plate also ensures sealing, achieving a double-layer seal on the lower valve seat sealing surface, ensuring redundant sealing in the event of failure of the upper valve seat sealing surface. Compared with existing cut-off ball valves, existing ball valves have a fixed gap at the valve seat. When solid particles are stuck in the gap, they can only be crushed to achieve the valve opening and closing action, which will have an adverse effect on the alloy layer of the sealing surface and the operating torque. The present invention is provided with a drive shaft that slides along the sliding groove and a high-elasticity spring. When solid particles are stuck in the gap, the upper retaining plate has a yielding property to avoid wear caused by hard squeezing. At the same time, the sufficiently large spring force can clamp the solid particles, still achieving sealing of the solid medium.

[0038] Example 3

[0039] Preferably, Figure 1 As shown, the present invention provides a high-pressure sealing material blocking valve, including a main valve body 001, an auxiliary valve body 002, a driving 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 driving mechanism 003 is arranged in the valve body cavity, including a turntable 302, upper and lower baffle plates 301, two upper and lower driving 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 3As shown, the main shaft 005 is fixedly connected to the turntable 302 by welding. The main shaft drives the driving 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 actuator or a hydraulic cylinder, which is not shown in the figure. The lower driving shaft 303 and the upper and lower rotating shafts 3021 are fixed to the turntable 302. A sliding groove is provided on the upper side of the turntable 302, and the upper driving 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 axial holes that cooperate with the rotating shaft 3021 and the driving shaft 303. The upper driving shaft 303 is connected to the turntable 302 with a spring 304. The spring connected to the upper driving shaft provides elastic force to counteract the medium force. When the solid medium is stuck in the gap between the upper baffle plate and the medium channel, the upper driving shaft moves downward along the sliding groove, driving the upper baffle plate to move downward. At the same time, the spring provides elastic force that is transmitted to the upper baffle plate through the driving 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 set on the lower side of the turntable 302, and the lower driving shaft 303 slides in the lower sliding groove. The lower driving shaft 303 is connected to the turntable 302 by a spring 304, and the spring connected to the lower driving shaft provides elastic force to seal the lower channel.

[0045] Material retaining seal principle: Because the gas-based vertical furnace contains a solid medium accompanied by high-pressure gas, the medium flows from top to bottom. Therefore, taking the direction of the schematic diagram as an example, when the valve is in the closed state, the high-pressure side is above the upper material retaining plate, and the medium force exerts downward pressure. The high-elasticity spring of the upper material retaining plate provides a sufficiently large sealing force to counteract the medium force, and a sufficient sealing pressure ratio is guaranteed through design; the high-elasticity spring of the lower material retaining plate provides a sufficiently large sealing force to achieve a double-layer seal on the lower valve seat sealing surface, ensuring redundant sealing when the upper valve seat sealing surface fails. Compared with the existing cut-off ball valve, the existing ball valve has a fixed gap at the valve seat. When solid particles are stuck in the gap, the valve can only be opened and closed by being crushed, which will have an adverse effect on the alloy layer of the sealing surface and the operating torque. The present invention provides a driving shaft that slides along the sliding groove and a high-elasticity spring. When solid particles are stuck in the gap, the upper baffle plate has a yielding property to avoid wear caused by hard squeezing. At the same time, the spring force is large enough to clamp the solid particles and still achieve sealing of the solid medium. The sealing of the gas medium is achieved through the lower valve seat.

[0046] Example 4

[0047] like Figure 1As shown, the present invention provides a high-pressure sealing material blocking valve, including a main valve body 001, an auxiliary valve body 002, a driving 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 driving mechanism 003 is arranged in the valve body cavity, including a turntable 302, upper and lower baffle plates 301, two upper and lower driving 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, and the fixed connection method is a key connection. The main shaft drives the driving 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 actuator or a hydraulic cylinder, which is not shown in the figure. The lower driving shaft 303 and the upper and lower rotating shafts 3021 are fixed to the turntable 302. A sliding groove is provided on the upper side of the turntable 302, and the upper driving 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 axial holes that cooperate with the rotating shaft 3021 and the driving shaft 303. The upper driving shaft 303 is connected to the turntable 302 with a spring 304. The spring connected to the upper driving shaft provides elastic force to counteract the medium force. When the solid medium is stuck in the gap between the upper baffle plate and the medium channel, the upper driving shaft moves downward along the sliding groove, driving the upper baffle plate to move downward. At the same time, the spring provides elastic force that is transmitted to the upper baffle plate through the driving 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 set on the lower side of the turntable 302, and the lower driving shaft 303 slides in the lower sliding groove. The lower driving shaft 303 is connected to the turntable 302 by a spring 304, and the spring connected to the lower driving shaft provides elastic force to seal the lower channel.

[0053] Material retaining seal principle: Because the gas-based vertical furnace contains a solid medium accompanied by high-pressure gas, the medium flows from top to bottom. Therefore, taking the direction of the schematic diagram as an example, when the valve is in the closed state, the high-pressure side is above the upper material retaining plate, and the medium force exerts downward pressure. The high-elasticity spring of the upper material retaining plate provides a sufficiently large sealing force to counteract the medium force, and a sufficient sealing pressure ratio is guaranteed through design; the high-elasticity spring of the lower material retaining plate provides a sufficiently large sealing force to achieve a double-layer seal on the lower valve seat sealing surface, ensuring redundant sealing when the upper valve seat sealing surface fails. Compared with the existing cut-off ball valve, the existing ball valve has a fixed gap at the valve seat. When solid particles are stuck in the gap, the valve can only be opened and closed by being crushed, which will have an adverse effect on the alloy layer of the sealing surface and the operating torque. The present invention provides a driving shaft that slides along the sliding groove and a high-elasticity spring. When solid particles are stuck in the gap, the upper baffle plate has a yielding property to avoid wear caused by hard squeezing. At the same time, the spring force is large enough to clamp the solid particles and still achieve sealing of the solid medium. The sealing of the gas medium is achieved through the lower valve seat.

[0054] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit them. Those skilled in the art will appreciate that the technical solutions described in the aforementioned embodiments may be modified, or some of the technical features thereof may be replaced with equivalents; such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A high-pressure sealing material stop valve, characterized in that: include: Main valve body (001), auxiliary valve body (002), driving 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 driving mechanism (003) is arranged in the valve body cavity, and includes a rotary disk (302), upper and lower baffle plates (301), two upper and lower driving 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 rotary disk (302), and a medium channel is formed between the upper and lower baffle plates. The main shaft (005) is fixedly connected to the turntable (302), the lower drive shaft (303) and the upper and lower rotating shafts (3021) are fixed on the turntable (302), and 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 baffle plates (301) are respectively provided with two shaft holes that cooperate with the rotating shaft (3021) and the driving shaft (303). The upper driving shaft (303) and the turntable (302) are connected to the spring (304). The spring connected to the upper driving shaft provides elastic force to counteract the medium force. When the solid medium is stuck in the gap between the upper baffle plate and the medium channel, the upper driving shaft moves downward along the sliding groove, driving the upper baffle plate to move downward. At the same time, the spring provides elastic force that is transmitted to the upper baffle plate through the driving shaft to clamp the solid medium.

2. The high-pressure sealing material stop 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), and the lower driving shaft (303) slides in the lower sliding groove. The lower driving shaft (303) and the turntable (302) are connected by a spring (304), and the spring connected to the lower driving shaft provides elastic force to seal the lower channel.

3. The high-pressure sealing material stop valve according to claim 1 or 2, characterized in that: The main shaft (005) and the turntable (302) are fixedly connected in a key connection manner.

Images