Hoop type quick-opening blind plate with optimized structure

Abstract

The utility model discloses a clamp type quick-opening blind plate with an optimized structure, and relates to the technical field of quick-opening blind plates, the clamp type quick-opening blind plate comprises a flange plate, the front end of a flange of the flange plate is fixedly sleeved with a guide fixing disc, the front side edge of the guide fixing disc is provided with a plurality of guide sliding grooves at equal intervals, the guide sliding grooves are internally connected with sliding blocks in a sliding mode, and the sliding blocks are arranged in the guide sliding grooves. Split type hoops are fixedly mounted on the inward sides of the sliding blocks corresponding to the front sides of the guiding fixing discs, the driving sliding rods are driven to be close to the center through guiding cooperation of the guiding sliding ways and the outer ends of the driving sliding rods, and therefore the multiple split type hoops are pushed to form a hoop structure on the outer edges of the flange plate and the sealing blind plate, and the sealing blind plate can be rapidly opened conveniently; the opening and closing efficiency of the quick-opening blind plate is greatly improved, the structural design is compact, all parts are connected stably and reliably, and the overall structure is firmer and more durable.

Description

Technical Field

[0001] This utility model relates to the field of quick-opening blind flange technology, specifically to a clamp-type quick-opening blind flange with optimized structure. Background Technology

[0002] Quick-opening blind flanges are special mechanical devices used in the petroleum, chemical and metallurgical industries to quickly open or close the tail end openings of pressure vessels or high-pressure pipelines. They have very high requirements for the safety and reliability of their sealing. Commonly used quick-opening blind flanges are mainly of three types: snap-fit ​​type, locking ring type and clamp type.

[0003] Existing clamp-type quick-opening blind flanges rely on a screw-nut mating structure to drive an annular clamp located between the blind flange head cover and the blind flange seat to tighten or loosen, locking or unlocking the blind flange head cover and blind flange seat, thus closing or opening the quick-opening blind flange. The annular clamp is typically a vertically arranged three- or four-lobed combination structure. Due to its good safety and reliability, this type of three- or four-lobed annular clamp-type quick-opening blind flange is widely used in actual production. However, because the axial displacement speed of the nut relative to the screw in the screw-nut mating structure is relatively slow, the opening and closing efficiency of the quick-opening blind flange is usually low. Furthermore, due to the significant kinetic friction resistance between the nut and the screw, it can sometimes lead to difficulties in controlling the rotation of the screw relative to the nut. Therefore, we propose a structurally optimized clamp-type quick-opening blind flange. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the opening and closing efficiency of quick-opening blind flanges is usually low due to the slow axial displacement speed of the nut relative to the screw in the screw-nut mating structure. At the same time, due to the large motion friction resistance between the nut and the screw, it may sometimes lead to difficulties in controlling the rotation of the screw relative to the nut. This invention provides a clamp-type quick-opening blind flange with optimized structure.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] An optimized clamp-type quick-opening blind flange includes a flange. A guide fixing plate is sleeved and fixed to the front end of the flange. Multiple guide grooves are evenly spaced on the front edge of the guide fixing plate. A sliding block is slidably connected in the guide groove. A split clamp is fixedly installed on the inward side of the sliding block corresponding to the front side of the guide fixing plate. The split clamp has a fan-shaped structure. A sealing blind flange is placed against the front side of the flange. A fan-shaped groove is opened on the inward side of the split clamp corresponding to the edge of the flange and the sealing blind flange. A drive slide rod is inserted through the center of the sliding block. A drive turntable is rotatably installed on the rear side of the guide fixing plate. The drive turntable is aligned with the back side of the guide fixing plate. Guide tracks are opened on the drive turntable corresponding to the multiple drive slide rods. The rear end of the drive slide rod is slidably installed in the guide track. A locking mechanism is provided between the guide fixing plate and the drive turntable.

[0007] Furthermore, a connecting convex plate is fixedly connected to one side of the guide fixing plate, and a connecting flap is hinged to the front side of the connecting convex plate via a hinge seat. The end of the connecting flap away from the connecting convex plate is fixedly connected to the outer center of the sealing blind plate.

[0008] Furthermore, the locking mechanism includes a locking seat, which is fixedly installed on the outer side wall of the drive turntable, and a locking bolt is threaded to the center of the rear side of the locking seat. A locking hole is provided at the center of the connecting convex plate corresponding to the movement trajectory of the locking bolt, and the locking hole matches the front end of the locking bolt.

[0009] Furthermore, a gripping sleeve is fixedly connected to the rear side of the locking seat corresponding to the position of the locking bolt, and the locking bolt is installed through the inner cavity of the gripping sleeve. The outer wall of the gripping sleeve is wrapped with a rubber anti-slip sleeve.

[0010] Furthermore, the flange sealing surface of the flange is provided with an annular groove, and an annular sealing strip is inserted in the annular groove.

[0011] Furthermore, the inner wall of the guide slide and the outer wall of the drive slide are both fixed with a polytetrafluoroethylene wear-resistant layer.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model involves mating the sealing blind flange with the front side of the flange, rotating the drive turntable, and guiding the drive slide rod towards the center through the guide slide and the outer end of the drive slide rod. This pushes multiple split clamps to form a clamp structure on the outer edge of the flange and the sealing blind flange, fixing the flange and the sealing blind flange. Then, the drive turntable is locked by a locking mechanism. When the sealing blind flange needs to be opened, the locking mechanism is released, the drive turntable is rotated, and multiple drive slide rods move outward synchronously. This drives multiple sliding blocks to slide outward quickly along the guide slide groove, allowing multiple split clamps to release the flange and sealing blind flange edges simultaneously, facilitating the rapid opening of the sealing blind flange and greatly improving the opening and closing efficiency of the quick-opening blind flange. The structure is compact, and the connection between the components is stable and reliable, making the overall structure more robust and durable.

[0014] 2. By setting a connecting convex plate and a connecting flap, the sealing blind plate is hinged and flipped by the connecting flap and the connecting convex plate, which facilitates the quick opening and closing operation of the sealing blind plate and further improves the service life and reliability of the clamp-type quick-opening blind plate.

[0015] 3. The PTFE wear-resistant layer in this invention significantly reduces the frictional resistance between the inner wall of the guide slide and the outer wall of the drive slide rod, allowing the drive slide rod to slide more smoothly within the guide slide and further improving the opening and closing efficiency and operational fluidity of the clamp-type quick-opening blind flange. Simultaneously, the PTFE wear-resistant layer also possesses excellent self-lubricating and corrosion-resistant properties, effectively extending the service life of the guide slide and drive slide rod, and reducing maintenance costs. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a rear-view perspective view of the present invention;

[0018] Figure 3 This is a top sectional view of the present invention;

[0019] Figure 4 This is a utility model Figure 3 Enlarged view of point A in the middle.

[0020] Reference numerals: 1. Flange; 2. Guide fixing plate; 3. Guide slide; 4. Sliding block; 5. Split clamp; 6. Drive slide rod; 7. Drive turntable; 8. Guide slide; 9. Connecting convex plate; 10. Connecting flap; 11. Sealing blind plate; 12. Locking seat; 13. Holding sleeve; 14. Locking bolt; 15. Locking socket. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0022] Please see Figures 1-4 This utility model provides a clamp-type quick-opening blind flange with optimized structure, including a flange 1. A guide fixing plate 2 is sleeved and fixed to the front end of the flange 1. Multiple guide grooves 3 are evenly spaced on the front edge of the guide fixing plate 2. A sliding block 4 is slidably connected in the guide groove 3. A split clamp 5 is fixedly installed on the inward side of the sliding block 4 corresponding to the front side of the guide fixing plate 2. The split clamp 5 has a fan-shaped structure. A sealing blind flange 11 is placed against the front side of the flange 1. A fan-shaped groove is opened on the inward side of the split clamp 5 corresponding to the edge of the flange 1 and the sealing blind flange 11. A drive slide rod 6 is inserted through the center of the sliding block 4. A drive turntable 7 is rotatably installed on the rear side of the guide fixing plate 2. The drive turntable 7 is aligned with the back side of the guide fixing plate 2. Guide slides 8 are opened on the drive turntable 7 corresponding to the multiple drive slide rods 6. The rear end of the drive slide rod 6 is slidably installed in the guide slides 8. A locking mechanism is provided between the guide fixing plate 2 and the drive turntable 7.

[0023] In this embodiment, preferably, a connecting convex plate 9 is fixedly connected to one side of the guide fixing plate 2, and a connecting flap 10 is hinged to the front side of the connecting convex plate 9 via a hinge seat. The end of the connecting flap 10 away from the connecting convex plate 9 is fixedly connected to the outer center of the sealing blind plate 11. Through the connecting convex plate 9 and the connecting flap 10, the sealing blind plate 11 can be hinged and flipped by the connecting flap 10 and the connecting convex plate 9, which facilitates the quick opening and closing operation of the sealing blind plate 11 and further improves the service life and reliability of the clamp-type quick-opening blind plate.

[0024] In this embodiment, preferably, the locking mechanism includes a locking seat 12, which is fixedly installed on the outer wall of the drive turntable 7. A locking bolt 14 is threadedly connected to the rear center of the locking seat 12. A locking hole 15 is opened at the center of the connecting convex plate 9 corresponding to the movement trajectory of the locking bolt 14, and the locking hole 15 matches the front end of the locking bolt 14. Through the locking seat 12, the locking bolt 14 on the rear side of the locking seat 12 can pass through the locking seat 12 and be inserted into the locking hole 15, thereby fixing the relative position of the guide fixing plate 2 and the drive turntable 7. When the locking bolt 14 is aligned with the locking hole 15, the drive slide rod 6 moves to the innermost end of the guide slide 8, keeping the split clamp 5 clamping and fixing the flange 1 and the edge of the sealing blind plate 11, thereby realizing the locking of the blind plate. The operation is convenient and quick, greatly improving the opening and closing efficiency of the quick-opening blind plate.

[0025] In this embodiment, preferably, a gripping sleeve 13 is fixedly connected to the rear side of the locking seat 12 corresponding to the locking bolt 14, and the locking bolt 14 is installed through the inner cavity of the gripping sleeve 13. The outer wall of the gripping sleeve 13 is covered with a rubber anti-slip sleeve. The gripping sleeve 13 facilitates the gripping operation of the drive turntable 7, and the rubber anti-slip sleeve effectively increases the friction between the hand and the gripping sleeve 13, preventing slippage during rotation. This further improves the ease of use of the clamp-type quick-opening blind plate. Alternatively, a worm gear can be concentrically fixed on the back side of the drive turntable 7, and an external motor can drive the worm gear to rotate, thereby driving the drive turntable 7 to rotate, saving manpower.

[0026] In this embodiment, preferably, the flange sealing surface of the flange 1 is provided with an annular groove, and an annular sealing strip is inserted in the annular groove; the annular sealing strip can effectively improve the sealing performance between the flange 1 and the sealing blind plate 11, prevent media leakage, and further enhance the safety and reliability of the clamp-type quick-opening blind plate.

[0027] In this embodiment, preferably, both the inner wall of the guide slide 8 and the outer wall of the drive slide rod 6 are fixed with a polytetrafluoroethylene (PTFE) wear-resistant layer. This PTFE wear-resistant layer significantly reduces the frictional resistance between the inner wall of the guide slide 8 and the outer wall of the drive slide rod 6, allowing the drive slide rod 6 to slide more smoothly within the guide slide 8, further improving the opening and closing efficiency and operational smoothness of the clamp-type quick-opening blind flange. Simultaneously, the PTFE wear-resistant layer also possesses excellent self-lubricating and corrosion-resistant properties, effectively extending the service life of the guide slide 8 and the drive slide rod 6, and reducing maintenance costs.

[0028] The working principle and usage process of this utility model are as follows: In use, the sealing blind plate 11 is mated and pressed against the front side of the flange 1. The drive turntable 7 is rotated, and the drive slide rod 6 is driven to move towards the center through the guide slide 8 and the guide cooperation of the outer end of the drive slide rod 6. This pushes multiple split clamps 5 to form a clamp structure on the outer edge of the flange 1 and the sealing blind plate 11, fixing the flange 1 and the sealing blind plate 11. Then, the drive turntable 7 is locked by the locking mechanism. When the sealing blind plate 11 needs to be opened, the locking mechanism is released, the drive turntable 7 is driven to flip, and multiple drive slide rods 6 are driven to move outward synchronously. This drives multiple sliding blocks 4 to slide outward quickly along the guide slide groove 3, so that multiple split clamps 5 release the flange 1 and the edge of the sealing blind plate 11 simultaneously, which facilitates the rapid opening of the sealing blind plate 11 and greatly improves the opening and closing efficiency of the quick-opening blind plate. The structure is compact, and the connection between each component is stable and reliable, making the overall structure more robust and durable.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A structurally optimized clamp-type quick-opening blind plate, characterized in that: The utility model relates to a flange sealing device, including flange (1), the flange front end sleeve of flange (1) is fixed with the guide fixed disc (2), and the front side edge of guide fixed disc (2) is equal interval and is equipped with a plurality of guide sliding groove (3), the sliding block (4) is connected in the guide sliding groove (3) and slides, the sliding block (4) is fixedly installed with the split type clamp (5) to the inside one side corresponding guide fixed disc (2) front side, and split type clamp (5) is the fan structure, the flange front side of flange (1) is placed with sealing blind plate (11), and the inside one side of split type clamp (5) is equipped with the fan-shaped clamping groove corresponding flange (1) and sealing blind plate (11) edge, the center of sliding block (4) is inserted and is equipped with the drive slide rod (6), and the rear side of guide fixed disc (2) is rotatably installed with drive turntable (7), drive turntable (7) is aligned with the back of guide fixed disc (2), and drive turntable (7) is equipped with guide slide (8) corresponding a plurality of drive slide rod (6) on, drive slide rod (6) rear end is slidably installed in guide slide (8), be provided with locking mechanism between guide fixed disc (2) and drive turntable (7).

2. A structurally optimized clamp-type quick-opening blind plate according to claim 1, characterized in that: One side of the guide fixed disc (2) is fixedly connected with a connecting lug (9), and the front side of the connecting lug (9) is hingedly connected with a connecting flap (10) through a hinge base. The end of the connecting flap (10) away from the connecting lug (9) is fixedly connected with the outside center of the sealing blind plate (11).

3. A structurally optimized clamp-type quick-opening blind plate according to claim 2, characterized in that: The locking mechanism includes a locking seat (12) fixedly installed on the outer side wall of the drive turntable (7), and a locking bolt (14) is screw-connected at the rear center of the locking seat (12). The center of the connecting lug (9) is provided with a locking hole (15) corresponding to the movement track of the locking bolt (14), and the locking hole (15) is matched with the front end of the locking bolt (14).

4. A structurally optimized clamp-type quick-opening blind plate according to claim 3, characterized in that: The rear side of the locking seat (12) is fixedly connected with a holding sleeve (13) corresponding to the position of the locking bolt (14), and the locking bolt (14) is arranged through the inner cavity of the holding sleeve (13). The outer wall of the holding sleeve (13) is wrapped with a rubber non-slip sleeve.

5. A structurally optimized clamp-type quick-opening blind plate according to claim 1, characterized in that: The flange sealing surface of the flange (1) is provided with an annular groove, and an annular sealing strip is inserted in the annular groove.

6. A structurally optimized clamp-type quick-opening blind plate according to claim 1, characterized in that: The inner wall of the guide slide (8) and the contact outer wall of the drive slide rod (6) are fixedly provided with a polytetrafluoroethylene wear-resistant layer.

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