Quick-opening blind plate

Abstract

The application discloses a quick-opening blind plate and relates to the technical field of blind plate equipment. The quick-opening blind plate comprises a blind plate seat and a blind plate. A sliding groove is radially arranged on the outer circumferential wall of the blind plate seat. A hinged seat is slidably arranged in the sliding groove. One end of the hinged seat, which is away from the blind plate seat, is hinged to the blind plate. A plurality of strip-shaped grooves are arranged on the end face of the blind plate seat, which is close to the blind plate. A hook groove is arranged on the inner side wall of the strip-shaped groove, which is away from the hinged seat. A hook body is arranged on the blind plate, which corresponds to the hook groove. The hook body comprises a vertical section and a horizontal section. The horizontal section is matched with the hook groove. The horizontal section is connected with the blind plate through the vertical section. The length of the strip-shaped groove is greater than that of the horizontal section. In the application, the internal locking of the blind plate and the blind plate seat is realized, the locking effect is improved, power supply is not needed, and the application range is improved. The design that the hinged seat is telescopic makes the hinged point of the blind plate after the blind plate is opened be away from the blind plate seat compared with the hinged point of the blind plate before the blind plate is opened. Therefore, a larger operation space can be provided, and the application range is further improved.

Description

Technical Field

[0001] This invention relates to the field of blind flange equipment technology, and in particular to a quick-opening blind flange. Background Technology

[0002] Quick-opening blind flanges are mechanical devices used on the circular openings of pressure pipelines and pressure vessels to enable rapid opening and closing. Currently, quick-opening blind flanges are mainly divided into manual quick-opening blind flanges and automatic quick-opening blind flanges.

[0003] Automatic quick-opening blind flanges primarily use a motor to open and close, which is relatively labor-saving, but can only be installed in areas with power grids, resulting in limited applicability. Manual quick-opening blind flanges are mainly mechanical structures, and are mostly opened or closed manually using a handle. They have a wider range of applications and can be installed in areas without power. However, to improve the safety of the blind flange, a locking mechanism is generally required to lock the blind flange to the blind flange seat. The safety locking mechanism designed for manual quick-opening blind flanges mostly uses a mechanical locking mechanism established between the outside of the blind flange and the blind flange seat through bolts, which has the problem of poor locking effect.

[0004] Therefore, there is an urgent need for a quick-opening blind flange that has a wide range of applications and a good locking effect. Summary of the Invention

[0005] The purpose of this invention is to provide a quick-opening blind flange to solve the problems existing in the prior art. By utilizing the cooperation between the hook body and the hook groove, mechanical locking between the blind flange and the blind flange seat is achieved from the inside, thereby improving the applicability and locking effect.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a quick-opening blind flange, including a blind flange base and a blind flange. A sliding groove is radially provided on the outer peripheral wall of the blind flange base. A hinge seat is slidably disposed in the sliding groove. The end of the hinge seat away from the blind flange base is hinged to the blind flange. A plurality of strip grooves are provided on the end face of the blind flange base near the blind flange. A hook groove is provided on the inner side wall of the strip groove away from the hinge seat. A hook body is provided on the blind flange corresponding to the hook groove. The hook body includes a vertical section and a horizontal section. The horizontal section matches the hook groove. The horizontal section is connected to the blind flange through the vertical section. The length of the strip groove is greater than the length of the horizontal section.

[0007] Preferably, a reducer is connected to the hinge seat, the input shaft of the reducer extends outward to form a force-applying rotating part, the output shaft of the reducer is connected to a worm gear drive, the worm gear is connected to a worm wheel drive, a connecting member is fixedly connected to the rotating shaft of the worm wheel, and the end of the connecting member away from the worm wheel is hinged to the blind plate.

[0008] Preferably, the input shaft of the reducer is horizontally positioned, and the input shaft of the reducer is located on the side of the reducer away from the hinge seat.

[0009] Preferably, the worm gear is fitted with a housing, and the housing has a through hole for the worm gear shaft to extend out.

[0010] Preferably, a sealing ring for sealing is provided between the blind plate and the blind plate seat.

[0011] Preferably, the hinge seat has protrusions on both sides, and the sliding groove has a locking block at the opening to prevent the protrusions from falling out.

[0012] Preferably, a screw is rotatably provided on the card block, and the screw extends into the sliding groove and is threadedly connected to the protrusion.

[0013] Preferably, the blind plate has an inclined groove along its edge, with the higher point of the inclined groove close to the hinge seat and the lower point away from the hinge seat. The inclined groove extends downward through the blind plate. A bracket is fixedly mounted on the blind plate seat, and a sliding pin is mounted on the bracket. The sliding pin is slidably mounted in the inclined groove. The hinge seat is slidably mounted up and down in the sliding groove. The locking block is slidably mounted up and down at the opening of the sliding groove. The upper surface of the horizontal section and the inner top wall of the hook groove are both inclined surfaces, with the end of the inclined surface near the bottom of the hook groove being lower than the end away from the bottom of the hook groove.

[0014] Preferably, a contact switch is provided on the side of the card block near the protrusion, and the contact switch is electrically connected to the indicator light.

[0015] Preferably, the openings of both the strip groove and the hook groove are flared.

[0016] The present invention achieves the following main technical effects compared to the prior art:

[0017] In the actual process of connecting the blind flange and the blind flange base, the hook of the blind flange near the blind flange base is inserted into the hook groove designed on the blind flange base to achieve internal locking between the two. The internal locking structure design reduces its susceptibility to the influence of the external environment and improves the locking effect. Moreover, this locking structure is mechanical and does not require power supply, thus increasing its applicability. In addition, the telescopic design of the hinge base makes the hinge point of the blind flange after it is opened farther away from the blind flange base than the hinge point before it is opened, providing a larger operating space and further reducing the impact of the blind flange on the operator's work, further increasing its applicability.

[0018] Other solutions of the present invention achieve the following technical effects compared with the prior art:

[0019] By utilizing the combination of a reducer and a worm gear transmission mechanism, the blind flange can be opened and closed by rotating the part through a screwing motion. Compared to manually opening the blind flange by using a handle, this method saves manpower. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the internal structure of the quick-opening blind flange in an embodiment of the present invention;

[0022] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;

[0023] Figure 3 This is a schematic diagram of the external structure of the quick-opening blind plate in an embodiment of the present invention;

[0024] Figure 4 for Figure 3 Enlarged view of the structure at point B;

[0025] Figure 5 This is a schematic diagram of the structure of the hinge seat and the sliding groove in an embodiment of the present invention;

[0026] Figure 6 This is a top view of the quick-opening blind plate in an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the distribution of strip holes on the blind plate seat in an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the hook distribution on a blind plate in an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of another strip-shaped hole distribution on the blind plate seat in an embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of another hook distribution on the blind plate in an embodiment of the present invention;

[0031] Among them, 1. blind plate seat; 2. blind plate; 3. sliding groove; 4. hinge seat; 5. strip groove; 6. hook groove; 7. hook body; 8. handle; 9. reducer; 10. force-applying rotating part; 11. worm; 12. worm wheel; 13. connector; 14. groove; 15. rotating rod; 16. strip hole; 17. outer shell; 18. sealing ring; 19. protrusion; 20. locking block; 21. screw; 22. inclined groove; 23. bracket; 24. sliding pin. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] The purpose of this invention is to provide a quick-opening blind flange to solve the problems existing in the prior art. By utilizing the cooperation between the hook body and the hook groove, mechanical locking between the blind flange and the blind flange seat is achieved from the inside, thereby improving the applicability and locking effect.

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Please refer to the following: Figures 1-10As shown, a quick-opening blind flange is provided, including a blind flange base 1 and a blind flange 2. A sliding groove 3 is radially provided on the outer peripheral wall of the blind flange base 1. A hinge seat 4 is slidably disposed within the sliding groove 3. The end of the hinge seat 4 away from the blind flange base 1 is hinged to the blind flange 2. Multiple strip grooves 5 are provided on the end face of the blind flange base 1 near the blind flange 2. Specifically, the multiple strip grooves 5 can be disposed on the annular end face of the blind flange base 1, or the end face of the blind flange base 1 can be extended inward to form an end face with a long strip opening, and the multiple strip grooves 5 can be disposed on this end face. Hook grooves 6 are provided on the inner sidewall of the strip grooves 5 away from the hinge seat 4. A hook body 7 is provided on the blind flange 2 corresponding to the hook groove 6. The hook body 7 includes a vertical section and a horizontal section. The horizontal section matches the hook groove 6 and is connected to the blind flange 2 through the vertical section. The connection between the horizontal section and the vertical section, and the connection between the vertical section and the blind flange 2, can both be... The design, which involves welding or integral connection, ensures that the length of the strip groove 5 is greater than the length of the horizontal section. This design provides sufficient space for the hook 7, which swings with the blind plate 2, to enter the strip groove 5 first, thus ensuring subsequent insertion into the hook groove 6. In this device, the hook 7 at the end of the blind plate 2 closest to the blind plate seat 1 is inserted into the hook groove 6 designed on the blind plate seat 1, achieving internal locking between the two. The internal locking structure design reduces the influence of the external environment and improves the locking effect. Moreover, this locking structure is mechanical and requires no power supply, thus expanding its applicability. In addition, the telescopic design of the hinge seat 4 makes the hinge point of the blind plate 2 after it is opened farther away from the blind plate seat 1 than the hinge point of the blind plate 2 before it is opened, providing a larger operating space and further reducing the impact of the blind plate 2 on the work of the staff, further expanding its applicability.

[0036] A handle 8 can be installed on the side of the blind flange 2 away from the blind flange seat 1, so that the operator can control the opening and closing of the blind flange 2.

[0037] In one embodiment, a reducer 9 is connected to the hinge seat 4. The input shaft of the reducer 9 extends outward to form a force-applying rotating part 10. The output shaft of the reducer 9 is connected to a worm gear 11, which is connected to a worm wheel 12. A connecting member 13 is fixedly connected to the rotating shaft of the worm wheel 12. The end of the connecting member 13 away from the worm wheel 12 is hinged to the blind plate 2. The specific hinge method is as follows: a groove 14 is provided at the end of the blind plate 2 away from the blind plate seat 1. A rotating rod 15 is provided in the groove 14. The end of the connecting member 13 is provided with a strip hole 16 with a width the same as the diameter of the rotating rod 15. The rotating rod 15 is located in the strip hole 16. The design of the strip hole 16 is due to the change in the distance between the rotating rod 15 and the rotating shaft of the worm wheel 12 during the opening and closing of the blind plate 2. Therefore, the strip hole 16 can adapt to this change. The design of the groove 14 is due to the change in the distance between the rotating rod 15 and the rotating shaft of the worm wheel 12 during the opening and closing of the blind plate 2. The position within 6 changes, causing the length of the connecting part 13 between the rotating rod 15 and the groove 14 to change, and the connecting part 13 will swing at an angle relative to the blind plate 2. Therefore, the groove 14 can provide clearance for the change of the connecting part 13. With the cooperation of the reducer 9 and the worm gear transmission mechanism, the blind plate 2 can be opened and closed by rotating the rotating part 10 through the twisting force. Compared with manually opening the blind plate 2 by the handle 8, it can save manpower. Moreover, the self-locking function of the reducer 9 can be used to lock the open position of the blind plate 2, improving the convenience of operation. In addition, when the blind plate 2 is closed, the self-locking of the reducer 9 can limit and lock the blind plate 2 from the top of the blind plate 2 through the connecting part 13. With the cooperation of the hook body 7 and the hook groove 6, a double mechanical locking between the blind plate 2 and the blind plate seat 1 is achieved, further improving the locking effect and improving the safety of use.

[0038] The input shaft of the reducer 9 can be set horizontally, with the input shaft of the reducer 9 located on the side of the reducer 9 away from the hinge seat 4, providing a larger operating space for using tools such as torque wrenches to tighten the force-applying rotating part 10; of course, the reducer 9 can also be set vertically, with the input shaft of the reducer 9 located on the upper or lower side, and the force-applying rotating part 10 can be tightened from the upper or lower side.

[0039] A housing 17 is provided around the worm gear 12. The housing 17 has a through hole for the shaft of the worm gear 12 to extend out. The housing 17 can provide protection for the transmission between the worm gear 12 and the worm 11, reducing the influence of the external environment on both. At the same time, the reducer 9 can also be installed inside the housing 17. The bearing seat for supporting the worm 11 from the side away from the reducer 9 can also be installed inside the housing 17, making full use of the housing 17 and improving the protection effect.

[0040] A sealing ring 18 is provided between the blind plate 2 and the blind plate seat 1 for sealing. The sealing ring 18 can be set in the following way: an annular groove is provided on the end face of the blind plate 2 or the blind plate seat 1, and the sealing ring 18 is embedded in the annular groove with a part exposed. In this way, after the blind plate 2 and the blind plate seat 1 are connected, the sealing ring 18 is deformed by the extrusion force to complete the seal.

[0041] In one embodiment, protrusions 19 are provided on both sides of the hinge seat 4. The protrusions 19 can be bolted to the hinge seat 4 or integrally formed with the hinge seat 4. In this case, the sliding groove 3 needs to match the hinge seat 4 with the protrusions 19. A locking block 20 is provided at the opening of the sliding groove 3 to prevent the protrusions 19 from falling out. The locking block 20 can prevent the hinge seat 4 from falling out by blocking the protrusions 19, thus ensuring the connection relationship between the blind plate 2 and the blind plate seat 1.

[0042] Since the hook body 7 and the hook groove 6 need to be radially displaced to cooperate, a screw 21 can be rotatably installed on the locking block 20. The position of the screw 21 relative to the locking block 20 does not change. The screw 21 extends into the sliding groove 3 and is threadedly connected to the protrusion 19. One end of the screw 21 extends out of the locking block 20 so that the operator can use a torque wrench to tighten it. Using the principle of screw drive, the protrusion 19 drives the hinge seat 4 to move radially, that is, drives the overall blind plate 2 to move radially, so as to realize the cooperation between the hook body 7 and the hook groove 6.

[0043] The portion of the screw 21 extending out of the locking block 20 can be connected to the output end of another reducer, whose input end can be used as a turning point for tightening with a torque wrench, thereby further saving manpower.

[0044] In one embodiment, a sealing ring 18 is designed between the blind flange 2 and the blind flange seat 1 to improve the sealing effect. However, there is relative displacement between the blind flange 2 and the blind flange seat 1, which easily wears the sealing ring 18 and reduces its service life. Therefore, a groove 22 is provided on the edge of the blind flange 2. The vertical plane of the groove 22 is parallel to the vertical plane of the radial displacement path of the blind flange 2. The high point of the groove 22 is close to the hinge seat 4, and the low point of the groove 22 is far away from the hinge seat 4. The groove 22 extends downward through the blind flange 2. A bracket 23 is fixedly provided on the blind flange seat 1, and a sliding pin 24 is provided on the bracket 23. The sliding pin 24 is slidably disposed in the groove 22. Inside, the height of the sliding groove 3 is increased, and the hinge seat 4 can be slidably installed in the sliding groove 3. The locking block 20 is slidably installed at the opening of the sliding groove 3. Specifically, the sliding method is as follows: a slider is set on the end face of the locking block 20 near the opening of the sliding groove 3, and a vertical groove is set at the opening of the sliding groove 3. The slider is slidably installed in the groove. The upper surface of the horizontal section and the inner top wall of the hook groove 6 are both inclined surfaces. The end of the inclined surface near the bottom of the hook groove 6 is lower than the end away from the bottom of the hook groove 6. In this structure, when the blind plate 2 is connected to the blind plate seat 1, the sliding pin 24 is located at the top of the inclined groove 22. The blind plate is controlled by turning the screw 21. During the radial displacement towards the hinge seat 4, the blind plate 2 moves outward at an angle due to the limiting effect of the inclined groove 22. The horizontal inclined surface of the hook body 7 slides relative to the inclined surface of the hook groove 6. The hinge seat 4 moves both radially and upward within the sliding groove 3. When the blind plate 2 moves outward at an angle until the sliding pin 24 disengages from the inclined groove 22 and abuts against the lower surface of the blind plate 2, the horizontal inclined surface disengages from the hook groove 6, meaning the hook body 7 aligns entirely with the strip groove 5. At this point, the blind plate 2 can be rotated using the transmission of the reducer 9 and the worm gear. When it is necessary to close the blind plate 2, the reducer 9 and the worm gear... The worm gear drives the blind plate 2 to flip until the sliding pin 24 abuts against the lower surface of the blind plate 2. Then, by turning the screw 21, the sliding pin 24 is adjusted to enter the inclined groove 22. At this time, the screw 21 is turned further, and the hinge seat 4 generates an inward radial movement and moves downward in the sliding groove 3. The entire blind plate 2 generates an inward oblique movement, and the inclined surface of the horizontal section of the hook body 7 gradually contacts the inclined surface of the hook groove 6 and generates relative sliding until the blind plate 2 is in place. During this process, the sealing ring 18 can be effectively prevented from being affected by large radial friction, thus improving its service life. In this structure, a reducer needs to be connected at the screw 21 to save manpower.

[0045] A contact switch can be installed on the side of the card block 20 near the protrusion 19. The contact switch is electrically connected to the indicator light. The indicator light can be set in the hinge seat 4 or other convenient locations for workers to observe. Through the cooperation of the contact switch and the indicator light, it can effectively indicate that the radial displacement of the blind plate 2 has reached its limit. The reducer 9 can then be operated to control the flipping of the blind plate 2. The power required for the circuit between the contact switch and the indicator light can be supplied by a solar panel or directly powered by a built-in button battery. The button battery can be replaced periodically.

[0046] In one embodiment, the openings of both the strip groove 5 and the hook groove 6 are enlarged, that is, the diameter of the groove opening is relatively enlarged, forming a guiding effect to ensure the accuracy of the blind plate 2 in place.

[0047] In actual use, the blind plate 2 is first controlled to move radially by turning the screw 21, so that the hook 7 is disengaged from the hook groove 6. Then, the worm gear 12 is controlled to rotate by turning the input end of the reducer 9, and then the blind plate 2 is rotated around its hinge point by the connecting piece 13, so that the blind plate 2 is opened. When the blind plate 2 is closed, the blind plate 2 is first rotated by the connecting piece 13, and then the blind plate 2 is controlled to move by turning the screw 21, so that the hook 7 is inserted into the hook groove 6 to complete the locking fit.

[0048] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0049] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A quick-opening blind plate, characterized in that, The device includes a blind plate base and a blind plate. A sliding groove is radially provided on the outer peripheral wall of the blind plate base. A hinge seat is slidably disposed in the sliding groove. The end of the hinge seat away from the blind plate base is hinged to the blind plate. A plurality of strip grooves are provided on the end face of the blind plate base near the blind plate. A hook groove is provided on the inner side wall of the strip groove away from the hinge seat. A hook body is provided on the blind plate corresponding to the hook groove. The hook body includes a vertical section and a horizontal section. The horizontal section matches the hook groove. The horizontal section is connected to the blind plate through the vertical section. The length of the strip groove is greater than the length of the horizontal section. The screw extends into the sliding groove and is threadedly connected to the protruding part of the hinge seat. The screw controls the hinge seat to move radially. The blind plate has a sloping groove along its edge. The higher point of the sloping groove is located near the hinge seat, and the lower point is located away from the hinge seat. The sloping groove extends downward through the blind plate. A bracket is fixedly mounted on the blind plate seat, and a sliding pin is mounted on the bracket. The sliding pin is slidably mounted in the sloping groove. The hinge seat is slidably mounted up and down in the sliding groove. The upper surface of the horizontal section and the inner top wall of the hook groove are both sloping surfaces. The end of the sloping surface near the bottom of the hook groove is lower than the end away from the bottom of the hook groove.

2. The quick-opening blind plate according to claim 1, characterized in that, A reducer is connected to the hinge seat. The input shaft of the reducer extends outward to form a force-applying rotating part. The output shaft of the reducer is connected to a worm gear drive. The worm gear is connected to a worm wheel drive. A connecting member is fixedly connected to the rotating shaft of the worm wheel. The end of the connecting member away from the worm wheel is hinged to the blind plate.

3. The quick-opening blind plate according to claim 2, characterized in that, The input shaft of the reducer is horizontally positioned, and the input shaft of the reducer is located on the side of the reducer away from the hinge seat.

4. The quick-opening blind plate according to claim 2, characterized in that, The worm gear is fitted with a housing, and the housing has a through hole for the worm gear shaft to extend out.

5. The quick-opening blind plate according to claim 1, characterized in that, A sealing ring is provided between the blind plate and the blind plate seat to provide a sealing effect.

6. The quick-opening blind plate according to claim 1, characterized in that, The hinge seat has protrusions on both sides, and the sliding groove has a locking block at the opening to prevent the protrusions from falling out.

7. The quick-opening blind flange according to claim 6, characterized in that, The screw is rotatably mounted on the card block.

8. The quick-opening blind plate according to claim 7, characterized in that, The card block is slidably positioned at the opening of the sliding groove.

9. The quick-opening blind plate according to claim 7, characterized in that, A contact switch is provided on the side of the card block near the protrusion, and the contact switch is electrically connected to the indicator light.

10. The quick-opening blind plate according to claim 1, characterized in that, Both the openings of the strip groove and the hook groove are flared.

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