Modular high temperature butterfly valve

Abstract

The application relates to the technical field of valves and discloses a modular high-temperature butterfly valve, which comprises a valve body, a valve seat arranged on the inner wall of the valve body, an adjusting bin fixedly connected to the top of the valve body, a butterfly plate rotationally connected to the middle part of the valve body, a worm shaft rotationally connected to the adjusting bin and fixedly connected with the butterfly plate, a hand wheel worm rotationally connected to the right part of the adjusting bin and engaged with the worm shaft, core pipes slidingly and sealingly connected to the left and right sides of the inner wall of the valve body, and an inclined surface one arranged at the inner end of the core pipe. When the valve is closed, the two side resisting pipes respectively drive the end face sealing rings to extrude and limit the edges of the butterfly valve, so that the sealing is enhanced, the deformation effect of the edges of the butterfly plate caused by pressure is reduced, the service life of the butterfly plate is prolonged, before the valve is opened, the two side core pipes and the resisting pipes respectively move outward to avoid positions and form slope surfaces at the inner ends through mutual cooperation, so that the influence on medium conveying is reduced, and the adjustment and maintenance of the arbitrary opening degree of the valve can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a modular high-temperature butterfly valve. BACKGROUND

[0002] The butterfly valve is a kind of valve with relatively simple structure among all common valves. The butterfly valve, also known as flap valve, controls the on-off and flow of liquid by changing the rotation angle of the butterfly plate. The overall structure of the butterfly valve can be divided into multiple module parts, which facilitates separate design, manufacturing, maintenance, etc. The butterfly valve structure can be bidirectionally sealed. In the case of full opening of the butterfly valve, the flow of liquid will not be affected due to the relatively small thickness of the butterfly plate. Therefore, the butterfly valve is widely used in general industrial fields such as petroleum, chemical industry, gas, water treatment, etc. and can also be applied to the cooling water system of a thermal power plant.

[0003] The patent for invention with publication number CN118309802A discloses a high-temperature wear-resistant butterfly valve. The high-temperature wear-resistant butterfly valve comprises a valve seat, a rotating ball rotatably connected to the middle of the valve seat, a channel provided in the middle of the rotating ball, a sealing element made of wear-resistant material fixedly connected to the inner wall of the channel of the rotating ball, a first connecting shaft rotatably connected to one side of the rotating ball and a second connecting shaft rotatably connected to the other side of the rotating ball, the first connecting shaft penetrating the first connecting piece and being rotatably connected thereto, a butterfly plate fixedly connected between the opposite ends of the second connecting shaft and the first connecting shaft and sealingly matched with the sealing element, a support frame and a limiting disc penetrating and being fixedly connected to the first connecting shaft, and a driving mechanism provided between the valve seat and the second connecting piece.

[0004] In the use process of the high-temperature wear-resistant butterfly valve in the above-mentioned patent, the butterfly plate is arranged inside the rotating ball. By adjusting the rotation angle of the rotating ball, the port of the rotating ball is dislocated with the valve passage to reduce the impact force of high-pressure liquid on the butterfly plate, thereby avoiding the impact of sudden increase in liquid pressure on the butterfly plate and causing deformation of the butterfly plate to reduce the sealing performance. However, the rotation of the rotating ball is driven by the elastic diaphragm arranged in the flow passage. Since the pressure is instantaneous, the rotating ball cannot protect the butterfly plate in advance, and the butterfly plate cannot be protected in advance from the pressure fluctuation in the subsequent pipeline, thereby resulting in low protection effect on the butterfly plate. In addition, the concentrated stress value at the edge of the butterfly plate is high, which makes the butterfly plate more prone to deformation and reduces the service life. When adjusting the deflection of the butterfly plate, the locking of the butterfly plate is realized by the teeth and the limiting through hole at the fixed position, thereby making it difficult to realize the arbitrary opening degree adjustment of the valve. SUMMARY

[0005] The present application aims to solve the problems of poor protection effect on the butterfly plate and the inability of the valve to realize arbitrary opening degree adjustment in the use process of general high-temperature butterfly valves. The present application provides a modular high-temperature butterfly valve.

[0006] In order to achieve the above-mentioned purpose, the present application specifically adopts the following technical solutions:

[0007] The utility model provides a modularization high temperature butterfly valve, including the valve body and the valve seat of setting in the inner wall of valve body, the top fixed connection of valve body has the adjusting storehouse, the middle part rotationally connected of valve body has the butterfly plate, the rotationally connected of adjusting storehouse right part has with the worm gear of meshing of worm gear shaft, the inner wall left and right sides of valve body all are sealed and are connected with the core pipe of sliding, the inner end of core pipe is provided with inclined plane no.

[0008] The front end edge rotationally connected of worm gear has the handle, the front end sliding joint of handle has the pressure cap, the front side of adjusting storehouse is provided with the limiting component of locking to any angle worm gear;

[0009] When needing to control the valve to open, the adjusting assembly drives the core pipe and the resisting pipe to respectively move outward and avoid the position, and the moving distance of the resisting pipe is greater than that of the core pipe, the end face sealing ring is far away from the butterfly plate and is automatically deformed to restore to the wedge shape, and the inclined plane no.

[0010] Further, the outer wall and the inner wall of the inner end of the core pipe are respectively movably connected with a sealing ring one, the outer end of the resisting pipe is movably connected with a sealing ring two, and the inner wall of the resisting pipe is movably connected with the core pipe.

[0011] Further, the upper and lower sides of the outer wall of the core pipe are respectively circumferentially provided with a guide groove one, the guide groove one is connected and combined by a slope groove and a ring groove in the inward direction of the valve body, the upper and lower sides of the outer wall of the resisting pipe are respectively circumferentially provided with a guide groove two, the guide groove two is inclinedly arranged in the inward direction of the valve body, the vertical distance between the left and right ends of the guide groove two is greater than that of the guide groove one, and the guide groove two is internally and externally connected with the slope groove.

[0012] Further, the adjusting assembly comprises an adjusting ring rotationally connected to the outer wall of the valve body, the inner wall of the adjusting ring is fixedly connected with a pin column movably connected with the guide groove one and the guide groove two, the top of the worm gear is rotationally connected with a hand wheel screw rod, the bottom of the hand wheel screw rod is threadedly sleeved with a screw pipe movably penetrating through the worm gear and the butterfly plate, the lower wall of the valve body is provided with a sleeve, the inside of the sleeve is movably connected with an elastic collar rotationally connected with the bottom of the screw pipe, the elastic collar and the adjusting ring are movably connected with a hinge rod, and the right wall of the screw pipe is provided with a limiting plate movably connected with the side wall of the worm gear.

[0013] Further, the adjusting chamber bottom has a tubular surrounding movably sleeved on the periphery of the worm shaft, the inner wall of the tubular surrounding is provided with sealing filler, the upper and lower sides of the middle part of the adjusting ring are respectively provided with movable grooves, the upper and lower walls of the valve body are respectively provided with sliding grooves corresponding to the pin columns, the valve body is provided with an outwardly convex sealing cover in the middle part, and the sealing cover is movably sleeved on the periphery of the tubular surrounding of the adjusting chamber bottom and the outside of the valve body lower wall sleeve.

[0014] Further, the adjusting chamber bottom has a tubular surrounding movably sleeved on the periphery of the worm shaft, the inner wall of the tubular surrounding is provided with sealing filler, the upper and lower sides of the middle part of the adjusting ring are respectively provided with movable grooves, the upper and lower walls of the valve body are respectively provided with sliding grooves corresponding to the pin columns, the valve body is provided with an outwardly convex sealing cover in the middle part, and the sealing cover is movably sleeved on the periphery of the tubular surrounding of the adjusting chamber bottom and the outside of the valve body lower wall sleeve.

[0015] Further, the adjusting chamber bottom has a tubular surrounding movably sleeved on the periphery of the worm shaft, the inner wall of the tubular surrounding is provided with sealing filler, the upper and lower sides of the middle part of the adjusting ring are respectively provided with movable grooves, the upper and lower walls of the valve body are respectively provided with sliding grooves corresponding to the pin columns, the valve body is provided with an outwardly convex sealing cover in the middle part, and the sealing cover is movably sleeved on the periphery of the tubular surrounding of the adjusting chamber bottom and the outside of the valve body lower wall sleeve.

[0016] Further, the limiting assembly comprises a worm tube rotatably connected to the front end of the adjusting chamber, the worm tube is sleeved on the hand wheel worm, a plurality of limiting holes are formed in the periphery of the worm tube, and the right wall of the adjusting chamber is rotatably connected with a fine adjustment worm engaged with the worm tube.

[0017] Further, the limiting assembly further comprises a wedge column rotatably connected to the rear end of the pressing cap, the front inner wall of the hand wheel worm is slidably connected with an elastic column movably connected with the limiting hole, the bottom of the elastic column is provided with a wedge groove, the wedge column and the wedge groove are respectively provided with four inclined surfaces which are in abutment with each other, and the wedge column is slidably connected with the inner wall of the hand wheel worm.

[0018] The beneficial effects of the present application are as follows:

[0019] 1、When the valve is closed, the two sides of the resisting pipe respectively drive the end face sealing ring to extrude and limit the edge of the butterfly valve, thereby cooperating with the valve seat to strengthen the sealing, and when the medium pressure increases, the deformation effect of the pressure on the edge of the butterfly plate is reduced, compared with the general butterfly valve, the butterfly plate protection mechanism is actuated by the medium pressure, the butterfly plate is automatically protected after the valve is closed, thereby prolonging the service life of the butterfly plate, before the valve is opened, the control adjusting assembly drives the two sides of the core pipe and the resisting pipe to move outward and avoid position, the inclined surface one in the inner end of the core pipe is aligned with the inclined surface three on the deformed end face sealing ring, and then the inclined surface two at the outer end of the resisting pipe is aligned, thereby optimizing the flow channel shape, reducing local resistance and energy loss, and reducing the influence on the medium conveying.

[0020] 2、When the valve is opened, after the pressing cap is pressed to unlock the hand wheel worm, the handle is used to control the hand wheel worm to drive the worm shaft to deflect the butterfly plate, and the control adjusting limiting assembly can lock the hand wheel worm at any angle after the pressing cap is loosened, thereby realizing the adjustment and keeping of the valve at any opening degree. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the perspective view of the butterfly valve of the present application;

[0022] Figure 2 is the perspective view of the valve body and the adjusting chamber of the butterfly valve of the present application;

[0023] Figure 3 is the perspective view of the butterfly valve and the adjusting ring of the butterfly valve of the present application;

[0024] Figure 4 is the perspective view of the valve body and the resisting pipe of the butterfly valve of the present application;

[0025] Figure 5 is the perspective view of the butterfly valve and the resisting pipe of the butterfly valve of the present application;

[0026] Figure 6 is the perspective view of the core pipe and the resisting pipe of the butterfly valve of the present application;

[0027] Figure 7 is the perspective view of the limiting block and the adjusting chamber of the butterfly valve of the present application;

[0028] Figure 8 is the perspective view of the adjusting chamber and the hand wheel worm of the butterfly valve of the present application;

[0029] Figure 9 is the perspective view of the end face sealing ring of the butterfly valve of the present application.

[0030] Reference signs: 1, valve body; 11, sealing cover; 12, limiting block; 13, adjusting chamber; 14, limiting column; 2, butterfly plate; 21, worm shaft; 22, arc groove; 3, core pipe; 31, sealing ring one; 32, guide groove one; 33, resisting pipe; 34, sealing ring two; 35, end face sealing ring; 36, guide groove two; 37, adjusting ring; 38, pin column; 4, hand wheel screw rod; 41, screw pipe; 42, elastic collar; 43, hinge rod; 44, limiting plate; 5, hand wheel worm; 51, handle; 52, pressing cap; 53, wedge column; 54, worm pipe; 55, limiting hole; 56, fine adjustment worm; 57, elastic column; 58, wedge groove. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0032] Embodiment one, as Figures 1-9As shown, a modular high-temperature butterfly valve includes a valve body 1 and a valve seat arranged on the inner wall of the valve body 1, the top of the valve body 1 is fixedly connected with an adjusting bin 13, the middle of the valve body 1 is rotatably connected with a butterfly plate 2, the adjusting bin 13 is rotatably connected with a worm shaft 21 fixedly connected with the butterfly plate 2, the right part of the adjusting bin 13 is rotatably connected with a hand wheel worm 5 engaged with the worm shaft 21, the left and right sides of the inner wall of the valve body 1 are both slidably and sealingly connected with a core pipe 3, the inner end of the core pipe 3 is provided with an inclined surface one, the inner wall of the core pipe 3 is slidably and sealingly connected with a resisting pipe 33, the resisting pipe 33 is slidably and sealingly connected with the inner wall of the valve body 1, the inner wall of the core pipe 3 is slidably and sealingly connected with the resisting pipe 33, the inner end of the resisting pipe 33 is fixedly connected with an end face sealing ring 35, and the outer end is provided with an inclined surface two, the cross section of the end face sealing ring 35 in a natural state is wedge-shaped with an inclined surface three, the valve body 1 and the worm shaft 21 are provided with an adjusting assembly for driving the left and right core pipes 3 and the resisting pipe 33 to move outward with a difference;

[0033] The front end edge of the hand wheel worm 5 is rotatably connected with a rotating handle 51, the rotating handle 51 is slidably and sealingly connected with a pressing cap 52, the front side of the adjusting bin 13 is provided with a limiting assembly for locking the hand wheel worm 5 at any angle.

[0034] The initial valve is in a closed state, the butterfly plate 2 is sealingly and abuttingly connected with the valve seat, the left and right resisting pipes 33 drive the end face sealing rings 35 to limit the edge of the butterfly plate 2, so that when the medium pressure increases, the deformation effect of the medium pressure on the edge of the butterfly plate 2 is reduced, compared with the protection mechanism of the butterfly plate 2 in the general butterfly valve, the protection mechanism can always protect the butterfly plate 2 after the valve is closed, and the protection of the butterfly plate 2 by the medium pressure is avoided when the medium pressure increases, so that the service life of the butterfly plate 2 is prolonged, when it is necessary to control the valve to be opened, the adjusting assembly is controlled to drive the left and right core pipes 3 and the resisting pipe 33 to move outward and avoid the position, and the moving distance of the resisting pipe 33 is greater than that of the core pipe 3, the end face sealing ring 35 is far away from the butterfly plate 2 and is automatically deformed to restore to a wedge shape, the inclined surface one at the inner end of the core pipe 3 is matched with the inclined surface three on the deformed end face sealing ring 35, and the inclined surface two at the outer end of the resisting pipe 33 is matched, so that the flow channel shape is optimized when the valve is subsequently opened, the local resistance and energy loss of the medium are reduced when the medium passes through the left and right ends of the core pipe 3 and the resisting pipe 33, so that the influence on the medium conveying is reduced, after the core pipe 3 and the resisting pipe 33 are avoided, the pressing cap 52 is pressed to unlock the hand wheel worm 5, the butterfly plate 2 is deflected by the worm shaft 21 driven by the hand wheel worm 5, and then the valve opening degree is adjusted, the limiting assembly is controlled to lock the hand wheel worm 5 at any angle after the pressing cap 52 is released, so that the valve opening degree is adjusted and maintained, when the valve is subsequently closed, the butterfly plate 2 is adjusted by the hand wheel worm 5, the pressure impact of the medium on the butterfly plate 2 when the valve is closed can be reduced, and the pressure deformation effect on the butterfly plate 2 is reduced.

[0035] In the above embodiment, the outer wall of the core pipe 3 is circumferentially provided with a guide groove 32 on both sides, the guide groove 32 is connected and combined with the inclined groove and the ring groove in the inward direction of the valve body 1, the outer wall of the resisting pipe 33 is circumferentially provided with a guide groove 36 on both sides, the guide groove 36 is arranged obliquely in the inward direction of the valve body 1, the vertical distance between the left and right ends of the guide groove 36 is greater than the vertical distance between the left and right ends of the guide groove 32, and the guide groove 36 is internally and externally connected with the inclined groove.

[0036] The adjusting assembly comprises an adjusting ring 37 rotatably connected to the outer wall of the valve body 1, a pin column 38 movably connected with the guide groove 32 and the guide groove 36 is fixedly connected to the inner wall of the adjusting ring 37, a hand wheel screw rod 4 rotatably connected to the top of the worm shaft 21, a screw pipe 41 movably penetrating the worm shaft 21 and the butterfly plate 2 is threadedly connected to the bottom of the hand wheel screw rod 4, a sleeve is arranged on the lower wall of the valve body 1, a spring ring 42 rotatably connected with the bottom of the screw pipe 41 is slidably connected inside the sleeve, a hinge rod 43 movably connected between the spring ring 42 and the adjusting ring 37, and a limiting plate 44 slidably connected with the side wall of the worm shaft 21 is arranged on the right wall of the screw pipe 41.

[0037] The initial valve is in a closed state, the spring ring 42 is moved downward by rotating the hand wheel screw rod 4 to drive the screw pipe 41, the spring ring 42 pulls the hinge rod 43 to make the adjusting ring 37 deflect, the adjusting ring 37 presses the inclined groove and the guide groove 36 by the pin column 38 respectively, thereby driving the core pipes 3 and the resisting pipes 33 on both sides to move outward synchronously, and when the pin column 38 rotates along the ring groove, the core pipes 3 stop moving, while the pin column 38 still presses the guide groove 36 to drive the resisting pipes 33 to move outward slightly, thereby driving the core pipes 3 and the resisting pipes 33 to move away from the butterfly plate 2 respectively, facilitating the subsequent opening of the butterfly plate 2, and driving the end face sealing ring 35 and the inner end of the core pipe 3 to form a slope, optimizing the flow channel shape, reducing the local resistance and energy loss of the medium, thereby reducing the influence on the medium transportation, and when the worm shaft 21 drives the butterfly plate 2 to deflect, since the screw pipe 41 can rotate relative to the spring ring 42, the separation of the core pipes 3 and the resisting pipes 33 is not affected.

[0038] In addition, when the valve is in a closed state, the spring ring 42 is in a compressed state, when the hand wheel screw rod 4 has a downward trend driven by the screw pipe 41 due to the fluctuation of the pipeline medium pressure and the vibration of the working condition, the spring ring 42 can form a counterforce by the elastic force, so that the hand wheel screw rod 4 is difficult to automatically deflect.

[0039] The embodiment three is based on the above-mentioned embodiments, the bottom of the adjusting bin 13 has a tubular surrounding movably sleeved on the outer periphery of the worm gear shaft 21, the inner wall of the tubular surrounding is provided with sealing filler, the upper and lower sides of the middle part of the adjusting ring 37 are respectively provided with movable grooves, the upper and lower walls of the valve body 1 are respectively provided with sliding grooves corresponding to the pin column 38, the outer periphery of the valve body 1 is provided with the sealing cover 11 protruding outward in the middle part, and the sealing cover 11 is movably sleeved on the outer periphery of the tubular surrounding at the bottom of the adjusting bin 13 and the outside of the sleeve at the lower wall of the valve body 1.

[0040] The outer wall and the inner wall of the inner end of the core pipe 3 are movably connected with the sealing ring one 31 and the sealing ring two 34, respectively.

[0041] By arranging the sealing ring one 31 and the sealing ring two 34, sufficient sealing can be formed before the movement of the core pipe 3 and the resisting pipe 33, so as to avoid the leakage of the medium between the core pipe 3 and the resisting pipe 33 and the outward leakage from the sliding groove, and the external sealing is performed by cooperating with the sealing cover 11, so that the leakage of the medium is avoided.

[0042] The embodiment four is based on the above-mentioned embodiments, the inner cavity of the adjusting bin 13 is fixedly connected with the limiting column 14 at the lower wall, the tooth-shaped part at the top of the worm gear shaft 21 is provided with the arc groove 22 movably connected with the limiting column 14, and the central angle corresponding to the arc groove 22 is ninety degrees.

[0043] By cooperating between the arc groove 22 and the limiting column 14, the maximum rotation range of the butterfly plate 2 driven by the worm gear shaft 21 is limited.

[0044] The embodiment five is based on the above-mentioned embodiments, the lower wall of the adjusting bin 13 is provided with the limiting block 12, the right side of the limiting block 12 is provided with the fan cavity penetrating through the tubular surrounding at the bottom of the adjusting bin 13, the top of the fan cavity is provided with the square groove matched with the limiting plate 44, and the width of the limiting plate 44 is matched with the width of the fan cavity.

[0045] The initial limiting block 12 is connected in the square groove, when the core pipe 3 and the resisting pipe 33 on both sides are far away from the butterfly plate 2, the hand wheel worm 5 cannot adjust the deflection of the butterfly plate 2, so that when the valve is opened, the core pipe 3 and the resisting pipe 33 are prevented from colliding with each other due to not being far away from the butterfly plate 2 in time, when the core pipe 3 and the resisting pipe 33 on both sides are far away from the butterfly plate 2 to the maximum distance, the screw pipe 41 drives the limiting plate 44 to move downward to the fan cavity, at this time, the deflection of the butterfly plate 2 driven by the worm gear shaft 21 can be adjusted, and the corresponding limiting plate 44 can be deflected and cooperatively moved in the fan cavity, and when the valve is closed, it also needs to be adjusted in sequence, so that the core pipe 3 and the resisting pipe 33 can limit the edge of the butterfly plate 2, and the adjustment is safe and reliable.

[0046] In the above embodiment, the limiting assembly comprises a worm tube 54 rotatably connected to the front end of the adjusting bin 13, the worm tube 54 is sleeved on the hand wheel worm 5, a plurality of limiting holes 55 are formed on the outer periphery of the worm tube 54, and a fine adjustment worm 56 is rotatably connected to the right wall of the adjusting bin 13 and engaged with the worm tube 54.

[0047] The limiting assembly further comprises a wedge column 53 rotatably connected to the rear end of the pressing cap 52, a resilient column 57 movably connected with the limiting hole 55 is slidably connected to the inner wall of the front part of the hand wheel worm 5, a wedge groove 58 is formed on the bottom of the resilient column 57, and the wedge column 53 and the wedge groove 58 are respectively provided with inclined surfaces four abutting with each other, and the wedge column 53 is slidably connected with the inner wall of the hand wheel worm 5.

[0048] By pressing the pressing cap 52, the wedge column 53 is extruded to extrude the wedge groove 58, so as to drive the resilient column 57 to be separated from the limiting hole 55, the control handle 51 drives the hand wheel worm 5 to rotate, so as to adjust the deflection of the butterfly plate 2, during which the control handle 51 is convenient to hold, after the pressing cap 52 is loosened, the resilient column 57 is automatically reset, and the fine adjustment worm 56 is rotated, when the resilient column 57 is just inserted into the limiting hole 55, the fine adjustment worm 56 cannot be rotated, when the resilient column 57 is misaligned with the limiting hole 55, the fine adjustment worm 56 can be rotated, and when the resilient column 57 is rotated to abut against the limiting hole 55, the resilient column 57 is automatically connected to the limiting hole 55, so as to realize the locking of the hand wheel worm 5 at any angle, and ensure the adjustment and keeping of the valve at any opening degree, in addition, the resilient column 57 and the limiting hole 55 are limited to each other, so as to realize the bidirectional locking of the hand wheel worm 5 and the fine adjustment worm 56, and avoid the accidental deflection of the two caused by the pressure fluctuation of the pipeline medium and the working condition vibration.

[0049] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A modular high-temperature butterfly valve, comprising a valve body (1) and a valve seat disposed on the inner wall of the valve body (1), characterized in that, The valve body (1) is fixedly connected to an adjustment chamber (13) at the top. A butterfly plate (2) is rotatably connected to the middle of the valve body (1). A worm gear shaft (21) fixedly connected to the butterfly plate (2) is rotatably connected to the adjustment chamber (13). A handwheel worm (5) meshing with the worm gear shaft (21) is rotatably connected to the right side of the adjustment chamber (13). Core tubes (3) are slidably sealed and snapped onto both sides of the inner wall of the valve body (1). An inclined surface is provided at the inner end of the core tube (3). The inner wall of the core tube (3) is slidably sealed with a stop tube (33), the stop tube (33) is slidably sealed with the inner wall of the valve body (1), the inner end of the stop tube (33) is fixedly connected with an end face sealing ring (35), and the outer end is provided with a second inclined surface. The cross section of the end face sealing ring (35) in its natural state is wedge-shaped with a third inclined surface. An adjustment component is provided between the valve body (1) and the worm gear shaft (21) to drive the two sides of the core tube (3) and the stop tube (33) to move outwards respectively. The handwheel worm (5) is rotatably connected to a handle (51) at the front edge, and a pressure cap (52) is slidably engaged at the front end of the handle (51). A limiting component for locking the handwheel worm (5) at any angle is provided on the front side of the adjustment chamber (13). When it is necessary to control the valve to open, the control adjustment component is used in advance to drive the core tube (3) and the abutment tube (33) on both sides to move outward to avoid the position. The outward movement distance of the abutment tube (33) is greater than the outward movement distance of the core tube (3). After the end face sealing ring (35) moves away from the butterfly plate (2), it automatically deforms and recovers into a wedge shape. The inclined surface one at the inner end of the core tube (3) and the inclined surface three on the deformed end face sealing ring (35) are aligned.

2. The modular high-temperature butterfly valve according to claim 1, characterized in that, The outer wall of the inner end of the core tube (3) is movably engaged with the inner wall and the outer wall of the core tube (3), and the outer wall of the outer end of the abutment tube (33) is movably engaged with the second sealing ring (34). The abutment tube (33) is slidably engaged with the inner wall of the core tube (3).

3. A modular high-temperature butterfly valve according to claim 2, characterized in that, The outer wall of the core tube (3) is provided with guide groove 1 (32) on the upper and lower sides respectively. The guide groove 1 (32) is composed of inclined groove and annular groove connected together in the direction of inward along the valve body (1). The outer wall of the abutment tube (33) is provided with guide groove 2 (36) on the upper and lower sides respectively. The guide groove 2 (36) is inclined in the direction of inward along the valve body (1). The vertical distance between the left and right ends of the guide groove 2 (36) is greater than the vertical distance between the left and right ends of the guide groove 1 (32). The guide groove 2 (36) is connected to the inclined groove inside and out.

4. A modular high-temperature butterfly valve according to claim 3, characterized in that, The adjustment assembly includes an adjustment ring (37) rotatably connected to the outer wall of the valve body (1). The inner wall of the adjustment ring (37) is fixedly connected with a pin (38) that is movably engaged with guide groove one (32) and guide groove two (36). The top of the worm gear shaft (21) is rotatably connected with a handwheel screw (4). The bottom of the handwheel screw (4) is threaded with a threaded tube (41) that movably passes through the worm gear shaft (21) and the butterfly plate (2). The lower wall of the valve body (1) is provided with a sleeve. The sleeve is slidably engaged with a spring shaft ring (42) that is rotatably connected to the bottom of the threaded tube (41). A hinge rod (43) is movably connected between the spring shaft ring (42) and the adjustment ring (37). The right wall of the threaded tube (41) is provided with a limiting plate (44) that is slidably engaged with the side wall of the worm gear shaft (21).

5. A modular high-temperature butterfly valve according to claim 4, characterized in that, The bottom of the regulating chamber (13) has a tubular surround that is movably sleeved around the worm gear shaft (21). The inner wall of the tubular surround is provided with sealing packing. The regulating ring (37) has movable grooves on the upper and lower sides of the middle. The upper and lower walls of the valve body (1) are provided with sliding grooves corresponding to the pin (38). The valve body (1) is equipped with a sealing cover (11) that protrudes outward in the middle. The sealing cover (11) is sealed around the tubular surround at the bottom of the regulating chamber (13) and the outside of the lower wall sleeve of the valve body (1).

6. A modular high-temperature butterfly valve according to claim 5, characterized in that, The lower wall of the inner cavity of the regulating chamber (13) is fixedly connected to a limiting post (14), and the top toothed part of the worm gear shaft (21) is provided with an arc groove (22) that is movably engaged with the limiting post (14). The central angle corresponding to the arc groove (22) is ninety degrees.

7. A modular high-temperature butterfly valve according to claim 6, characterized in that, The lower wall of the regulating chamber (13) is provided with a limiting block (12). The right side of the limiting block (12) is provided with a fan cavity that extends through the bottom of the regulating chamber (13) and is surrounded by a tubular structure. The top of the fan cavity is provided with a rectangular groove that matches the limiting plate (44). The width of the limiting plate (44) matches the width of the fan cavity.

8. A modular high-temperature butterfly valve according to claim 7, characterized in that, The limiting component includes a worm gear tube (54) rotatably connected to the front end of the adjusting chamber (13). The worm gear tube (54) is sleeved on the handwheel worm (5). Several limiting holes (55) are opened on the outer circumference of the worm gear tube (54). A fine-tuning worm (56) that meshes with the worm gear tube (54) is rotatably connected to the right wall of the adjusting chamber (13).

9. A modular high-temperature butterfly valve according to claim 8, characterized in that, The limiting assembly also includes a wedge (53) rotatably connected to the rear end of the pressure cap (52). The inner wall of the front part of the handwheel worm (5) is slidably connected to a spring column (57) that is movably engaged with the limiting hole (55). A wedge groove (58) is provided at the bottom of the spring column (57). The wedge column (53) and the wedge groove (58) have mutually abutting inclined surfaces. The wedge column (53) is slidably engaged with the inner wall of the handwheel worm (5).

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