A heavy-duty quick-opening blind plate device

Abstract

The present application relates to the technical field of blind plate equipment, and specifically to a heavy-duty quick-opening blind plate device, comprising: a blind plate body, an opening and closing mechanism, a supporting mechanism, and a sealing mechanism; the blind plate body is arranged at the end pipe mouth of a horizontal container, comprising a head cover, a pressure ring, and a cylinder flange, the cylinder flange is welded to the end pipe mouth of the horizontal container, and the head cover is fixedly and detachably connected to the cylinder flange; the pressure ring is arranged between the head cover and the cylinder flange, and the head cover is pressed against the cylinder flange; the opening and closing mechanism is used to realize the connection and separation between the head cover and the cylinder flange; the supporting mechanism is used to support the cylinder flange; the sealing mechanism is arranged on the inner wall of the cylinder flange. Through the technical solution provided by the present application, the supporting mechanism supports the blind plate body, thereby preventing the blind plate body from leaking due to the bending moment generated at the connection between the blind plate body and the container or pipeline due to excessive deadweight; at the same time, the sealing mechanism ensures the sealing of the horizontal container under high-pressure or low-pressure working conditions, thereby improving the sealing performance and safety of the quick-opening blind plate device.

Description

Technical Field

[0001] The present application relates to the technical field of blind plate equipment, and in particular to a heavy-duty quick-opening blind plate device. Background Art

[0002] A quick-opening blind plate is a circular opening device used for pressure pipes or pressure vessels. It achieves rapid opening and closing through a mechanical structure. Its main functions include sealing pressure, isolating media, and ensuring maintenance safety. As a fixed quick-opening device installed at the pipe mouth, the quick-opening blind plate is widely used in cleaning and unblocking pipelines, as well as inspecting and cleaning containers.

[0003] The specifications of quick-opening blind plates are generally determined by the diameter of the pipeline. Heavy-duty quick-opening blind plates are often used on some large pipelines or pressure vessels. Due to their heavy weight, a large eccentric load will be generated at the connection between the pipeline or container and the quick-opening blind plate, thereby generating a bending moment. During long-term operation, it is easy to cause leakage at the connection between the quick-opening blind plate and the container or pipeline, posing a major safety hazard. At the same time, the sealing parts of heavy-duty quick-opening blind plates have a short service life under the working conditions of high-pressure gas or corrosion-resistant gas, and are prone to wear and corrosion. In particular, leakage is more likely to occur in media containing solid particles and high-intensity corrosive media, causing major safety hazards. Summary of the Invention

[0004] In order to improve the sealing and safety of heavy-duty quick-opening blind plates, the present application provides a heavy-duty quick-opening blind plate device.

[0005] The heavy-duty quick-opening blind plate device provided in this application adopts the following technical solution:

[0006] The blind plate body is provided at the end pipe opening of the horizontal container; the blind plate body comprises a head cover, a pressure ring and a cylinder flange; the cylinder flange is welded to the end pipe opening of the horizontal container, and the head cover is fixedly and detachably connected to the cylinder flange; the pressure ring is provided between the head cover and the cylinder flange, and is used to press the head cover onto the cylinder flange;

[0007] An opening and closing mechanism, the opening and closing mechanism being used to realize the connection and separation between the head cover and the cylinder flange;

[0008] A supporting mechanism, fixedly arranged below the blind plate body, for supporting the outer side wall of the cylinder flange;

[0009] The sealing mechanism is arranged on the inner wall of the cylinder flange and is used to improve the sealing between the cylinder flange and the head cover.

[0010] In a specific embodiment, the cylindrical flange is annular, and the inner wall of the cylindrical flange is provided with sealing steps and supporting steps in sequence along the axial direction;

[0011] The sealing step is arranged close to the end pipe opening of the horizontal container; the sealing mechanism is arranged on the sealing step;

[0012] The supporting step is used to support the head cover.

[0013] In a specific embodiment, the sealing mechanism includes a sealing support ring, the sealing support ring is engaged with the sealing step, and the sealing support ring and the sealing step are in clearance fit;

[0014] The sealing support ring includes an integrally provided vertical portion and a horizontal portion, wherein the vertical portion abuts against the plane of the sealing step, and a side wall of the vertical portion abutting against the plane of the sealing step is provided with a mounting blind hole, wherein a plurality of springs are embedded in the mounting blind hole, and the plurality of springs are evenly distributed along the inner cavity of the mounting blind hole, and the springs abut against the plane of the sealing step;

[0015] A first annular groove is formed on the outer peripheral wall of the vertical portion, an O-ring is embedded in the first annular groove, and the O-ring abuts against the annular side wall of the sealing step;

[0016] A second annular groove is formed on a side wall of the vertical portion away from the blind mounting hole, a sealing ring is embedded in the second annular groove, and the sealing ring abuts against the head cover;

[0017] The annular inner side wall of the vertical portion is configured as a sealing cone, and the opening of the sealing cone gradually increases in size from an end close to the end pipe mouth end face of the horizontal container to an end away from the end pipe mouth end face of the horizontal container.

[0018] In a specific embodiment, the head cover is disc-shaped and includes an integral boss portion and a pressure cover portion, wherein the boss portion and the pressure cover portion are coaxially arranged;

[0019] The side wall of the boss portion is configured as a sealing mating surface, the sealing mating surface has the same taper as the sealing conical surface, and the sealing mating surface is in close contact with the sealing conical surface; the sealing conical surface and the sealing mating surface are both welded with wear-resistant and high-temperature resistant materials;

[0020] A third annular groove is formed on the plane of the supporting step, a sealing ring is embedded in the third annular groove, and an end surface of the gland portion close to the boss portion abuts against the sealing ring and the sealing ring.

[0021] In a specific embodiment, the support mechanism includes a lifting assembly, a housing, a support assembly, a drive assembly, and a guide assembly;

[0022] The support assembly includes a base plate, a support plate and a cover plate; the base plate is fixedly arranged on the ground, and the two support plates are vertically arranged on the top wall of the base plate, and the two support plates are symmetrically arranged about the center line of the length direction of the base plate;

[0023] The bottom plate is provided with a plurality of ribs, and the ribs are used to fix the support plate and the bottom plate;

[0024] The side walls of the two support plates are respectively provided with mounting holes horizontally, the axes of the two mounting holes coincide with each other, bearings are fixedly provided in the mounting holes, and the drive assembly is fixedly connected to the two bearings;

[0025] The cover plate is fixedly mounted on the top wall of the support plate, a limiting hole is formed through the cover plate, and the lifting assembly is arranged through the limiting hole;

[0026] The shell is fixedly arranged on the bottom wall of the cover plate, and the shell is located below the limiting hole.

[0027] In a specific embodiment, the drive assembly includes a worm wheel and a worm, both ends of the worm respectively pass through the bearing, and the worm passes through the housing in a horizontal direction, and the end of the worm is fixedly connected to the inner ring of the bearing; one end of the worm passing through the bearing is fixedly connected to a driving member;

[0028] The worm wheel is rotatably arranged in the inner cavity of the housing, and the worm wheel is engaged with the worm; a threaded hole is formed through the worm wheel along the axial direction, and the threaded hole is vertically arranged;

[0029] The lifting assembly includes a threaded tube and a pad. The threaded tube is vertically arranged, and the lower end of the threaded tube passes through the limiting hole and is threadedly engaged with the threaded hole. The threaded tube and the limiting hole are clearance-matched, and the threaded tube passes through the shell; the pad is fixedly arranged at the upper end of the threaded tube.

[0030] In a specific embodiment, the guide assembly includes a guide rod, which is vertically arranged on the top wall of the base plate, and the axis of the guide rod coincides with the axis of the threaded tube;

[0031] The threaded tube is a hollow structure, and the upper end of the guide rod extends into the inner cavity of the lower end of the threaded tube.

[0032] In a specific possible implementation scheme, the backing plate is configured to be in an arc shape, and the curvature of the backing plate is the same as the curvature of the outer side wall of the cylinder flange.

[0033] In a specific possible implementation scheme, the drive assembly further includes a limiting nut, which is threadedly connected to the threaded tube and is located above the cover plate. The outer diameter of the limiting nut is larger than the diameter of the limiting hole.

[0034] In a specific embodiment, the bottom plate is provided with a plurality of waist-shaped holes, and the waist-shaped holes are parallel to the extension direction of the support plate along the length direction;

[0035] The waist-shaped holes are used to fix the bottom plate to the ground with bolts.

[0036] In summary, this application includes at least one of the following beneficial technical effects:

[0037] The O-ring is a sealant that seals the flange of the pipe and seals the flange together, and the O-ring is a sealant that seals the flange of the pipe and seals the flange together.

[0038] 2. After the blind plate body is installed, the support device is fixedly set under the quick-opening blind plate. By adjusting the driving member, the driving member drives the worm to rotate, and the worm drives the worm wheel to rotate synchronously. When the worm wheel rotates, the threaded pipe moves vertically upward along the direction of the threaded hole, and the threaded pipe drives the gasket to rise, until the arc surface of the gasket fits with the outer wall of the cylinder flange, thereby supporting the blind plate body. Finally, rotate the limit nut so that the limit nut moves along the height direction of the threaded pipe until the limit nut contacts the bottom wall of the cover plate. The cover plate supports the limit nut to limit the position of the threaded pipe in the vertical direction. The support mechanism is set up to support the blind plate body by lifting the gasket through the threaded pipe, so as to avoid the blind plate body from generating a large eccentric load at the connection between the pipeline or container and the quick-opening blind plate due to its own excessive weight, thereby generating bending moment, thereby avoiding leakage at the connection between the quick-opening blind plate and the container or pipeline during long-term operation, thereby improving the safety of the quick-opening blind plate device.

[0039] At the same time, the limiting nut limits the position of the threaded tube, so as to prevent the threaded tube from being displaced relative to the worm under the action of gravity when supporting the blind plate body, thereby improving the stability of the supporting mechanism.

[0040] 3. A base plate is provided with waist-shaped holes on the base plate, and bolts are passed through the waist-shaped holes to fix it to the ground. When the pipeline is subjected to impact load or thermal load, the container will produce displacement. The waist-shaped holes can allow the support mechanism to move with the displacement, thereby absorbing the generated displacement, thereby improving the support stability of the support mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application.

[0042] Figure 1 It is a schematic diagram of the overall structure of a heavy-duty quick-opening blind plate device of the present application.

[0043] Figure 2 It is a schematic diagram of the overall structure of the blind plate body of this application.

[0044] Figure 3 yes Figure 2 The enlarged view of the part is intended to illustrate the sealing mechanism.

[0045] Figure 4 yes Figure 3 The enlarged view of part A is intended to illustrate the seal support ring.

[0046] Figure 5 It is a schematic diagram of the overall structure of the supporting organization of this application.

[0047] Figure 6 It is a partial schematic diagram of the driving component of this application.

[0048] Figure 7 This is a schematic diagram of another perspective of the driving component of this application.

[0049] Figure 8 This is a connection diagram of the driver components of this application.

[0050] Figure 9 It is a schematic diagram of the base plate of this application.

[0051] Description of the drawings: 1. Blind plate body; 11. Head cover; 111. Boss portion; 1111. Sealing mating surface; 112. Gland portion; 12. Pressing ring; 13. Cylinder flange; 131. Sealing step; 132. Supporting step; 1321. Third annular groove; 1322. Sealing ring; 2. Opening and closing mechanism; 3. Supporting mechanism; 31. Lifting assembly; 311. Threaded pipe; 312. Backing plate; 32. Housing; 33. Supporting assembly; 331. Bottom plate; 3311. Waist-shaped hole; 332. Supporting plate; 3321. Mounting hole; 333 , cover plate; 3331, limiting hole; 334, rib; 335, bearing; 34, drive assembly; 341, worm gear; 3411, threaded hole; 342, worm; 343, drive member; 344, limiting nut; 35, guide assembly; 351, guide rod; 4, sealing mechanism; 41, sealing support ring; 411, vertical part; 4111, mounting blind hole; 4112, first annular groove; 4113, second annular groove; 4114, sealing cone; 412, horizontal part; 42, spring; 43, O-ring; 44, sealing ring. DETAILED DESCRIPTION

[0052] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0053] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features indicated. Thus, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; and in the description of this application, unless otherwise specified, "plurality" means two or more.

[0054] The following is combined with Figure 1-3 This application is described in further detail.

[0055] The present application discloses a heavy-duty quick-opening blind plate device, comprising:

[0056] Reference Figure 1 and Figure 2A heavy-duty quick-opening blind plate device comprises a blind plate body 1, an opening and closing mechanism 2, a sealing mechanism 4 and a supporting mechanism 3. The blind plate body 1 is arranged at the end pipe mouth of a horizontal container, and the blind plate body 1 comprises a head cover 11, a pressure ring 12 and a cylinder flange 13. The cylinder flange 13 is fixedly connected to the end pipe mouth of the horizontal container, and the head cover 11 is fixedly and detachably connected to the cylinder flange 13; the pressure ring 12 is arranged between the head cover 11 and the cylinder flange 13, and is used to press the head cover 11 onto the cylinder flange 13. The opening and closing mechanism 2 is used to realize the connection and separation between the head cover 11 and the cylinder flange 13. The sealing mechanism 4 is arranged on the inner wall of the cylinder flange 13, and is used to improve the sealing between the cylinder flange 13 and the head cover 11. The supporting mechanism 3 is fixedly arranged below the blind plate body 1, and is used to support the outer wall of the cylinder flange 13. When sealing the end pipe mouth of a horizontal container, first, the cylinder flange 13 is fixedly installed on the end pipe mouth of the horizontal container, and then the sealing mechanism 4 is installed on the inner wall of the cylinder flange 13, and then the head cover 11 is pressed against the end face of the cylinder flange 13 through the opening and closing mechanism 2, and the head cover 11 abuts against the sealing mechanism 4, and finally the pressure ring 12 is engaged between the head cover 11 and the cylinder flange 13 to achieve sealing for the pipe mouth; after the blind plate body 1 is installed, the support mechanism 3 is set below the blind plate body 1, and the support mechanism 3 presses the cylinder flange 1 3 is used for support to prevent the blind plate body 1 from generating a large eccentric load at the connection between the pipeline or container and the quick-opening blind plate due to its own excessive weight, thereby generating a bending moment, thereby facilitating the avoidance of leakage at the connection between the quick-opening blind plate and the container or pipeline during long-term operation, thereby improving the safety of the quick-opening blind plate device; in particular, the support mechanism 3 can be one group or multiple groups, as long as it can achieve stable support for the quick-opening blind plate device. In this embodiment, two groups of support mechanisms 3 are provided, and the two groups of support mechanisms 3 are symmetrically arranged about the central axis of the cylinder flange 13.

[0057] Reference Figure 2-Figure 4The cylinder flange 13 is annular, and its inner wall is sequentially provided with a sealing step 131 and a supporting step 132 along the axial direction. The sealing step 131 is located near the end nozzle of the horizontal container. The sealing mechanism 4 is fixedly mounted on the sealing step 131. The supporting step 132 is used to support the head cover 11. The sealing mechanism 4 includes a sealing support ring 41, which is engaged with the sealing step 131 with a clearance fit. The sealing support ring 41 is made of stainless steel. The sealing support ring 41 includes an integrally arranged vertical portion 411 and a horizontal portion 412. The vertical portion 411 abuts against the plane of the sealing step 131. The side wall where the vertical portion 411 abuts against the plane of the sealing step 131 is provided with a plurality of mounting blind holes 4111. The plurality of mounting blind holes 4111 are evenly distributed about the circumference of the sealing support ring 41. A spring 42 is provided in the mounting blind hole 4111. The spring 42 abuts against the plane of the sealing step 131. The outer peripheral wall of the vertical portion 411 is provided with a first annular groove 4112. The first annular groove 4112 is provided on the outer peripheral wall of the vertical portion 411. An O-ring 43 is embedded in the groove 4112, and the O-ring 43 abuts against the annular side wall of the sealing step 131; a second annular groove 4113 is opened on the side wall of the vertical portion 411 away from the mounting blind hole 4111, and a sealing ring 44 is embedded in the second annular groove 4113, and the sealing ring 44 abuts against the head cover 11; the annular inner side wall of the vertical portion 411 is set as a sealing cone surface 4114, and the opening of the sealing cone surface 4114 gradually becomes larger from the end face of the end pipe mouth close to the horizontal container to the end face of the end pipe mouth away from the horizontal container.

[0058] Reference Figure 2-Figure 4 The head cover 11 is disc-shaped, and the head cover 11 includes an integral boss portion 111 and a pressure cover portion 112, and the boss portion 111 and the pressure cover portion 112 are coaxially arranged; the side wall of the boss portion 111 is set as a sealing mating surface 1111, and the sealing mating surface 1111 has the same taper as the sealing cone surface 4114, and the sealing mating surface 1111 is tightly abutted against the sealing cone surface 4114; the sealing cone surface 4114 and the sealing mating surface 1111 are both welded with wear-resistant and high-temperature resistant materials, such as cemented carbide, tungsten carbide, Stellite and other high-strength materials; a third annular groove 1321 is opened on the plane of the support step 132, and a sealing ring 1322 is embedded in the third annular groove 1321, and the end face of the pressure cover portion 112 close to the boss portion 111 abuts against the sealing ring 44 and the sealing ring 1322.

[0059] Specifically, when the blind plate body 1 seals the end pipe mouth of the horizontal container, the pressure ring 12 presses the head cover 11 against the end face of the cylinder flange 13, and the sealing support ring 41 is in close contact with the head cover 11. The spring 42 is compressed in the installation blind hole 4111. When the pressure in the pipeline is relatively low, the spring 42 presses the sealing support ring 41 against the head cover 11 under the action of the restoring force, and realizes the sealing between the sealing support ring 41 and the cylinder flange 13 through the O-ring 43, and the sealing between the sealing support ring and the head cover 11 through the sealing ring 44. The sealing between the head cover 11 and the cylinder flange 13 is realized through the sealing ring 1322. The O-ring 43, the sealing ring 44 and the sealing ring 1322 jointly seal the blind plate body 1, so that the sealing effect of the pipeline under low-pressure conditions is enhanced, which is convenient for improving the safety of the quick-opening blind plate device. When the pipeline pressure is high, the sealing cone surface 4114 of the vertical portion 411 and the sealing mating surface 1111 of the boss portion 111 are in close contact, thereby achieving a hard seal on the blind plate body 1. The multiple sealing measures can help avoid the risk of pipeline leakage and improve the safety of the quick-opening blind plate device. At the same time, the sealing cone surface 4114 and the sealing mating surface 1111 are welded with high-strength materials such as cemented carbide, tungsten carbide, and Stellite to improve the corrosion resistance and wear resistance of the blind plate body 1 and ensure sealing performance under harsh working conditions. In addition, the sealing support ring 41 is made of stainless steel to prevent the sealing support ring 41 from rusting in media with excessive moisture content, which may affect the sealing performance of the blind plate device.

[0060] Reference Figure 5-Figure 9 The support mechanism 3 includes a lifting assembly 31, a shell 32, a support assembly 33, a drive assembly 34 and a guide assembly 35; the support assembly 33 includes a base plate 331, a support plate 332 and a cover plate 333; the base plate 331 is fixedly set on the ground, and two support plates 332 are vertically set on the top wall of the base plate 331, and the two support plates 332 are symmetrically arranged about the center line of the length direction of the base plate 331; a plurality of ribs 334 are provided on the base plate 331, and the ribs 334 are used to fix the support plates 332 and the base plate 33 1; The side walls of the two support plates 332 are each horizontally provided with mounting holes 3321. The axes of the two mounting holes 3321 coincide with each other. Bearings 335 are fixedly installed in the mounting holes 3321, and the drive assembly 34 is fixedly connected to the two bearings 335. The cover plate 333 is fixedly mounted on the top wall of the support plate 332. A limiting hole 3331 is formed through the cover plate 333, and the jacking assembly 31 is installed through the limiting hole 3331. The housing 32 is fixedly mounted on the bottom wall of the cover plate 333, and the housing 32 is located below the limiting hole 3331. The bottom plate 331 is provided with a plurality of waist-shaped holes 3311, and the waist-shaped holes 3311 are parallel to the extension direction of the support plates 332 along the length direction. The waist-shaped holes 3311 are used to fix the bottom plate 331 to the ground with bolts.

[0061] Specifically, after the blind plate body 1 is installed, the support device is fixedly set under the quick-opening blind plate. By adjusting the drive component 34, the drive component 34 drives the support component 33 to rise to contact with the cylinder flange 13, thereby supporting the blind plate body 1. By opening a waist-shaped hole 3311 on the bottom plate 331, the bolts are passed through the waist-shaped hole 3311 and fixed to the ground. When the pipeline is subjected to impact load or thermal load, displacement is generated. The waist-shaped hole 3311 can allow the support mechanism 3 to move with the displacement, thereby absorbing the generated displacement, thereby improving the support stability of the support mechanism 3.

[0062] Reference Figure 5-Figure 8 The drive assembly 34 includes a worm gear 341 and a worm 342. The two ends of the worm 342 pass through the bearings 335 respectively, and the worm 342 passes through the housing 32 in the horizontal direction. The end of the worm 342 is fixedly connected to the inner ring of the bearing 335; one end of the worm 342 passes through the bearing 335 and is fixedly connected to the driving member 343; the worm gear 341 is rotatably arranged in the inner cavity of the housing 32, and the worm gear 341 is engaged with the worm 342; a threaded hole 3411 is opened through the worm gear 341 along the axial direction, and the threaded hole 3411 is vertically arranged; the lifting assembly 31 includes a threaded tube 311, a pad 312 and a limiting nut 344, the threaded tube 311 is vertically arranged, and the lower end of the threaded tube 311 passes through the limiting hole 3 The screw threaded tube 311 is threadedly engaged with the threaded hole 3411, and the threaded tube 311 is loosely fitted with the limiting hole 3331. The threaded tube 311 extends through the housing 32. The driving member 343 can be a handle or a reducer, as long as it can drive the worm 342 to rotate. In this embodiment, a handle is fixedly connected to the worm 342. By applying force to the handle, the worm 342 rotates, thereby driving the worm wheel 341 to rotate, and the threaded tube 311 moves along the axis of the threaded hole 3411. The backing plate 312 is fixedly mounted on the upper end of the threaded tube 311. The backing plate 312 is configured as an arc, and the curvature of the backing plate 312 is the same as the curvature of the outer wall of the cylinder flange 13, so as to provide stable support for the cylinder flange 13. The limiting nut 344 is threadedly connected to the threaded tube 311 and is located above the cover plate 333. The outer diameter of the limiting nut 344 is larger than the diameter of the limiting hole 3331. The guide assembly 35 includes a guide rod 351, which is vertically arranged on the top wall of the base plate 331, and the axis of the guide rod 351 coincides with the axis of the threaded tube 311; the threaded tube 311 is a hollow structure, and the upper end of the guide rod 351 extends into the inner cavity of the lower end of the threaded tube 311.

[0063] Specifically, by adjusting the driving member 343, the driving member 343 drives the worm 342 to rotate, and the worm 342 drives the worm gear 341 to rotate synchronously. When the worm gear 341 rotates, the threaded tube 311 moves vertically upward along the axial direction of the threaded hole 3411, and the threaded tube 311 drives the gasket 312 to rise until the arc-shaped surface of the gasket 312 fits against the outer wall of the cylinder flange 13, thereby supporting the blind plate body 1. Finally, the limiting nut 344 is rotated to make the limiting nut 344 move along the height direction of the threaded tube 311 until the limiting nut 344 contacts the bottom wall of the cover plate 333. The cover plate 333 supports the limiting nut 344 to limit the position of the threaded tube 311 in the vertical direction. The support mechanism 3 is set up, and the blind plate body 1 is supported by the jacking pad 312 through the threaded tube 311, so as to prevent the blind plate body 1 from generating a large eccentric load at the connection between the pipeline or container and the quick-opening blind plate due to its own excessive weight, thereby generating a bending moment, and preventing leakage at the connection between the quick-opening blind plate and the container or pipeline during long-term operation, thereby improving the safety of the quick-opening blind plate device; at the same time, the limit nut 344 limits the position of the threaded tube 311, so as to prevent the threaded tube 311 from generating relative displacement with the worm 342 under the action of gravity when supporting the blind plate body 1, thereby improving the stability of the support mechanism 3.

[0064] The working principle of the heavy-duty quick-opening blind plate device in this application is as follows:

[0065] When using the heavy-duty quick-opening blind plate device, the barrel flange 13 is first fixedly connected to the end pipe mouth of the horizontal container, and then the head cover 11 is fixedly connected to the barrel flange 13 through the opening and closing mechanism 2. The pressure ring 12 is arranged between the head cover 11 and the barrel flange 13 to press the head cover 11 onto the barrel flange 13. The sealing mechanism 4 is arranged on the inner wall of the barrel flange 13 to improve the sealing between the barrel flange 13 and the head cover 11. The support mechanism 3 is fixedly arranged below the blind plate body 1 to support the outer wall of the barrel flange 13. When the blind plate needs to be opened, the head cover 11 and the barrel flange 13 are separated by the opening and closing mechanism 2. The worm 342 is driven to rotate by the driving member 343, and the worm 342 drives the worm wheel 341 to rotate. The rotation of the worm wheel 341 drives the threaded pipe 311 to rise or fall, thereby driving the pad 312 to rise or fall, thereby supporting or releasing the outer wall of the barrel flange 13. When the pad 312 rises, the pad 312 contacts the outer wall of the cylinder flange 13 to support the cylinder flange 13; when the pad 312 falls, the pad 312 separates from the outer wall of the cylinder flange 13 to release the support for the cylinder flange 13.

[0066] The sealing support ring 41 in the sealing mechanism 4 is engaged with the sealing step 131, and there is a clearance fit between the sealing support ring 41 and the sealing step 131. The vertical portion 411 of the sealing support ring 41 abuts the plane of the sealing step 131, and the spring 42 in the mounting blind hole 4111 abuts the plane of the sealing step 131, providing elastic support force. The O-ring 43 in the first annular groove 4112 abuts the annular side wall of the sealing step 131, and the sealing ring 44 in the second annular groove 4113 abuts the head cover 11, forming a double seal. The sealing cone 4114 tightly abuts the sealing mating surface 1111 of the head cover 11, further enhancing the sealing effect. The boss portion 111 of the head cover 11 is coaxially arranged with the pressure cover portion 112, the sealing mating surface 1111 of the boss portion 111 is tightly abutted against the sealing cone surface 4114, the end face of the pressure cover portion 112 close to the boss portion 111 is abutted against the sealing ring 44 and the O-ring 43, and the sealing ring 1322 on the support step 132 is abutted against the pressure cover portion 112, forming a multiple sealing structure to ensure the sealing effect.

[0067] The support mechanism 3 is fixed to the ground through the base plate 331, the support plate 332 is vertically arranged on the base plate 331, and the ribs 334 strengthen the connection between the support plate 332 and the base plate 331. The cover plate 333 is mounted on the top of the support plate 332, and the shell 32 is fixed to the bottom of the cover plate 333. The drive assembly 34 is installed on the support plate 332 through the bearing 335, and the worm gear 341 and worm 342 mechanism provide precise motion control. The jacking assembly 31 is connected to the threaded hole 3411 of the worm gear 341 through the threaded tube 311 to achieve vertical movement. The guide rod 351 of the guide assembly 35 extends into the inner cavity of the threaded tube 311 to ensure the stability of the movement of the threaded tube 311. The limit nut 344 prevents the threaded tube 311 from accidentally disengaging.

[0068] The above embodiments are intended only to illustrate the technical solutions of the present application and are not intended to limit them. The present application is not limited to the precise structures described above and illustrated in the accompanying drawings, and it cannot be assumed that the specific implementation of the present application is limited to these descriptions. For those skilled in the art of the present application, any changes and modifications made without departing from the concept of the present application should be deemed to fall within the scope of protection of the present application.

Claims

1. A heavy-duty quick-opening blind plate device, characterized in that: include: A blind plate body (1) is arranged at the end pipe mouth of a horizontal container; the blind plate body (1) comprises a head cover (11), a pressure ring (12) and a cylinder flange (13); the cylinder flange (13) is welded to the end pipe mouth of the horizontal container, and the head cover (11) and the cylinder flange (13) are fixedly and detachably connected; the pressure ring (12) is arranged between the head cover (11) and the cylinder flange (13), and the pressure ring (12) is used to press the head cover (11) onto the cylinder flange (13); the cylinder flange (13) is annular, and the inner wall of the cylinder flange (13) is sequentially provided with a sealing step (131) and a supporting step (132) along the axial direction; the sealing step (131) is arranged close to the end pipe mouth of the horizontal container; the supporting step (132) is used to support the head cover (11); An opening and closing mechanism (2), the opening and closing mechanism (2) being used to realize connection and separation between the head cover (11) and the cylinder flange (13); A support mechanism (3) is fixedly arranged below the blind plate body (1) and is used to support the outer side wall of the cylinder flange (13); A sealing mechanism (4) is provided on the inner wall of the cylinder flange (13) for improving the sealing performance between the cylinder flange (13) and the head cover (11); the sealing mechanism (4) includes a sealing support ring (41), the sealing support ring (41) is engaged with the sealing step (131), and the sealing support ring (41) and the sealing step (131) are clearance-matched; the sealing support ring (41) includes an integrally arranged vertical portion (411) and a horizontal portion (412), the vertical portion (411) abuts against the plane of the sealing step (131), and a plurality of mounting blind holes (4111) are provided on the side wall where the vertical portion (411) abuts against the plane of the sealing step (131), and the plurality of mounting blind holes (4111) are evenly distributed about the circumference of the sealing support ring (41), and the mounting blind holes (411 1) A spring (42) is provided inside, and the spring (42) abuts against the plane of the sealing step (131); a first annular groove (4112) is provided on the outer peripheral wall of the vertical portion (411), an O-ring (43) is embedded in the first annular groove (4112), and the O-ring (43) abuts against the annular side wall of the sealing step (131); a second annular groove (4113) is provided on the side wall of the vertical portion (411) away from the mounting blind hole (4111), a sealing ring (44) is embedded in the second annular groove (4113), and the sealing ring (44) abuts against the head cover (11); the annular inner side wall of the vertical portion (411) is provided as a sealing cone surface (4114), and the opening of the sealing cone surface (4114) gradually becomes larger from the end pipe mouth close to the end pipe mouth away from the horizontal container; The head cover (11) is disc-shaped and includes an integral boss portion (111) and a pressure cover portion (112). The boss portion (111) and the pressure cover portion (112) are coaxially arranged. The side wall of the boss portion (111) is arranged as a sealing mating surface (1111). The sealing mating surface (1111) has the same taper as the sealing conical surface (4114), and the sealing mating surface (1111) and the sealing conical surface (4114) are aligned with each other. (4114) are in close contact; the sealing cone surface (4114) and the sealing mating surface (1111) are both welded with wear-resistant and high-temperature resistant materials; a third annular groove (1321) is provided on the plane of the support step (132), and a sealing ring (1322) is embedded in the third annular groove (1321); the end face of the pressure cover part (112) close to the side of the boss part (111) is in contact with the sealing ring (44) and the sealing ring.

2. A heavy-duty quick-opening blind plate device according to claim 1, characterized in that: The support mechanism (3) comprises a lifting assembly (31), a housing (32), a support assembly (33), a driving assembly (34) and a guide assembly (35); The support assembly (33) comprises a bottom plate (331), a support plate (332) and a cover plate (333); the bottom plate (331) is fixedly arranged on the ground, and the two support plates (332) are vertically arranged on the top wall of the bottom plate (331), and the two support plates (332) are symmetrically arranged about the center line of the length direction of the bottom plate (331); A plurality of ribs (334) are provided on the bottom plate (331), and the ribs (334) are used to fixedly connect the support plate (332) and the bottom plate (331); The side walls of the two support plates (332) are respectively provided with mounting holes (3321) in a horizontal direction, the axes of the two mounting holes (3321) coincide with each other, bearings (335) are fixedly provided in the mounting holes (3321), and the driving assembly (34) is fixedly connected to the two bearings (335); The cover plate (333) is fixedly mounted on the top wall of the support plate (332); a limiting hole (3331) is provided through the cover plate (333); and the lifting assembly (31) is arranged through the limiting hole (3331); The shell (32) is fixedly arranged on the bottom wall of the cover plate (333), and the shell (32) is located below the limiting hole (3331).

3. A heavy-duty quick-opening blind plate device according to claim 2, characterized in that: The driving assembly (34) includes a worm wheel (341) and a worm (342), both ends of the worm (342) respectively pass through the bearing (335), and the worm (342) passes through the housing (32) in a horizontal direction, and the end of the worm (342) is fixedly connected to the inner ring of the bearing (335); one end of the worm (342) passing through the bearing (335) is fixedly connected to a driving member (343); The worm wheel (341) is rotatably disposed in the inner cavity of the housing (32), and the worm wheel (341) is meshed with the worm (342); a threaded hole (3411) is formed through the worm wheel (341) along the axial direction, and the threaded hole (3411) is vertically disposed; The lifting assembly (31) includes a threaded tube (311) and a pad (312), wherein the threaded tube (311) is vertically arranged, and the lower end of the threaded tube (311) passes through the limiting hole (3331) and is threadedly engaged with the threaded hole (3411), the threaded tube (311) and the limiting hole (3331) are clearance-matched, and the threaded tube (311) passes through the shell (32); the pad (312) is fixedly arranged on the upper end of the threaded tube (311).

4. A heavy-duty quick-opening blind plate device according to claim 3, characterized in that: The guide assembly (35) includes a guide rod (351), the guide rod (351) is vertically arranged on the top wall of the bottom plate (331), and the axis of the guide rod (351) coincides with the axis of the threaded tube (311); The threaded tube (311) is a hollow structure, and the upper end of the guide rod (351) extends into the inner cavity of the lower end of the threaded tube (311).

5. A heavy-duty quick-opening blind plate device according to claim 3, characterized in that: The pad (312) is configured to be in an arc shape, and the curvature of the pad (312) is the same as the curvature of the outer side wall of the cylinder flange (13).

6. A heavy-duty quick-opening blind plate device according to claim 3, characterized in that: The driving assembly (34) further includes a limiting nut (344), the limiting nut (344) being threadedly connected to the threaded tube (311), and the limiting nut (344) being located above the cover plate (333), and the outer diameter of the limiting nut (344) being larger than the diameter of the limiting hole (3331).

7. A heavy-duty quick-opening blind plate device according to claim 2, characterized in that: The bottom plate (331) is provided with a plurality of waist-shaped holes (3311), and the waist-shaped holes (3311) are parallel to the extension direction of the support plate (332) along the length direction; The waist-shaped hole (3311) is used to fix the bottom plate (331) to the ground with bolts.

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