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 clamp assembly, a blind plate cover and a blind plate seat. The blind plate seat can be connected to an equipment opening. One side of the blind plate cover is hinged to the blind plate seat, and the blind plate cover can close the equipment opening. The clamp assembly can lock the blind plate cover. The clamp assembly comprises a first-clap clamp and a second-clap clamp. The first-clap clamp and the second-clap clamp are arranged on the two sides of the equipment opening respectively. One end of the first-clap clamp and the second-clap clamp is hinged to the equipment opening, and the other end is connected through a connecting rod mechanism. The connecting rod mechanism can drive the first-clap clamp and the second-clap clamp to open and close, so as to loosen or lock the blind plate cover. The application has the advantages of simple structure and quick opening and closing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of blind plate equipment, in particular to a quick-opening blind plate. BACKGROUND

[0002] The quick-opening blind plate is a mechanical device used on the circular opening of a pressure pipeline or pressure container, and can realize quick opening or closing. The quick-opening blind plate mainly comprises a blind plate seat, a blind plate cover, a hook or a clamp, a sealing ring and the like. When used in the working condition of a horizontal container device or pipeline, a three-petal clamp quick-opening blind plate with good sealing effect and reasonable structure is usually selected. However, the existing three-petal clamp blind plate usually opens and closes the clamp through a screw rod, and the mechanical structure is relatively complex, the opening and closing time is long, and the screw rod often cannot work due to surface wear or rust. SUMMARY

[0003] The purpose of the present application is to provide a quick-opening blind plate to solve the problems existing in the prior art, which has a simple structure and can realize quick opening and closing.

[0004] To achieve the above purpose, the present application provides the following solutions.

[0005] The present application provides a quick-opening blind plate, which comprises a clamp assembly, a blind plate cover and a blind plate seat. The blind plate seat can be connected to the opening of a device. One side of the blind plate cover is hinged to the blind plate seat, and the blind plate cover can close the opening of the device. The clamp assembly can lock the blind plate cover. The clamp assembly comprises a first-petal clamp and a second-petal clamp. The first-petal clamp and the second-petal clamp are respectively arranged on both sides of the opening of the device, and one end of each of the first-petal clamp and the second-petal clamp is hinged to the opening of the device, and the other end is connected through a connecting rod mechanism. The connecting rod mechanism can drive the first-petal clamp and the second-petal clamp to open and close, so as to loosen or lock the blind plate cover.

[0006] Preferably, the connecting rod mechanism comprises a connecting plate and an operating rod. The first end of the connecting plate is hinged to the operating rod, and the second end is hinged to the second-petal clamp. The first end of the connecting plate is also hinged to the first-petal clamp through a hinge plate. When the operating rod is turned upward, the first-petal clamp and the second-petal clamp can be opened. When the operating rod is turned downward, the first-petal clamp and the second-petal clamp can be closed.

[0007] Preferably, the opening end of each of the first-petal clamp and the second-petal clamp is provided with a hinge seat. The hinge plate is hinged to the hinge seat on the first-petal clamp, and the second end of the connecting plate is hinged to the hinge seat on the second-petal clamp.

[0008] Preferably, two connecting plates are symmetrically arranged. The first ends of the two connecting plates are respectively hinged to both sides of the operating rod, and the second ends of the two connecting plates are respectively hinged to both sides of the hinge seat on the second lobe clamp. Two hinge plates are symmetrically arranged. The two hinge plates are arranged in parallel and are located inside the two connecting plates. One end of the two hinge plates is respectively hinged to the first end of the two connecting plates, and the other end of the two hinge plates is respectively hinged to both sides of the hinge seat on the first lobe clamp.

[0009] Preferably, a guide plate is provided on the side of the blind plate seat away from the blind plate cover. Two arc-shaped guide grooves are symmetrically arranged on the guide plate. A guide screw is connected to both the first and second lobe clamps. The two guide screws are respectively inserted into the two arc-shaped guide grooves and can move along the corresponding arc-shaped guide grooves to guide the opening and closing of the first and second lobe clamps.

[0010] Preferably, the quick-opening blind flange further includes a safety interlock plate, which allows the first and second clamps to be fixedly connected to the blind flange cover via the safety interlock plate when the first clamp and the second clamp are closed.

[0011] Preferably, the safety interlock plate can be fixedly connected to the first lobe clamp and the second lobe clamp respectively by two first positioning pins.

[0012] Preferably, the safety interlock plate can also be fixedly connected to the operating rod via a second positioning pin.

[0013] Preferably, the top of the blind plate cover is also provided with a vent hole, and a safety vent valve can be installed in the vent hole.

[0014] Preferably, the safety interlock plate is further provided with a vent valve hole. When the safety interlock plate is fixedly connected to the blind plate cover, the vent valve hole and the vent hole are coaxially arranged. The safety vent valve can pass through the vent valve hole and the vent hole in sequence to fix the safety interlock plate to the outside of the blind plate cover.

[0015] The present invention achieves the following technical effects compared to the prior art:

[0016] This invention uses a linkage mechanism to drive the first and second clamps to open and close. Compared with the lead screw mechanism in the prior art, the structure is simpler and can achieve rapid opening and closing; moreover, it avoids the situation where the lead screw cannot work due to surface wear or rust. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a front view of the quick-opening blind plate in an embodiment of the present invention;

[0019] Figure 2 This is a top view of the quick-opening blind plate in an embodiment of the present invention;

[0020] Figure 3 This is a structural diagram of the linkage mechanism in an embodiment of the present invention;

[0021] Figure 4 This is a forward isometric view of the quick-opening blind flange in an embodiment of the present invention;

[0022] Figure 5 This is a rear axonometric view of the quick-opening blind plate in an embodiment of the present invention;

[0023] Figure 6 This is a front view of the clamp assembly when it is opened in an embodiment of the present invention.

[0024] In the diagram: 1. Safety interlock plate, 2. Linkage mechanism, 3. First clamp, 4. Second clamp, 5. First positioning pin, 6. Safety vent valve, 7. Second positioning pin, 8. Fastening nut, 9. Guide screw, 10. Guide plate, 11. Blind plate cover, 12. Blind plate seat, 13. Connecting plate, 14. Operating lever, 15. Hinge plate. Detailed Implementation

[0025] 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.

[0026] The purpose of this invention is to provide a quick-opening blind plate to solve the problems existing in the prior art. It has a simple structure and can achieve rapid opening and closing.

[0027] 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.

[0028] Example 1

[0029] like Figures 1-6As shown, this embodiment provides a quick-opening blind flange, mainly including a clamp assembly, a blind flange cover 11, and a blind flange seat 12. The blind flange seat 12 can be connected to an equipment opening (pipe opening or container opening, etc.). One side of the blind flange cover 11 is hinged to the blind flange seat 12, and the blind flange cover 11 can close the equipment opening. The clamp assembly can lock the blind flange cover 11. Specifically, when the blind flange cover 11 closes the equipment opening, the clamp assembly closes to lock the blind flange cover 11. When it is necessary to open the blind flange cover 11, the clamp assembly is opened to release the blind flange cover 11. It should be noted that the above structure is a mature prior art in this field, and will not be described in detail in this embodiment.

[0030] In this embodiment, the clamp assembly includes a first clamp 3 and a second clamp 4. The first clamp 3 and the second clamp 4 are respectively disposed on both sides of the equipment opening, and can form a circular clamp assembly when closed. One end of the first clamp 3 and the second clamp 4 are hinged to the equipment opening, and the other end is connected through a linkage mechanism 2. The linkage mechanism 2 can drive the first clamp 3 and the second clamp 4 to open and close, so as to loosen or lock the blind cover 11.

[0031] In this embodiment, the first clamp 3 and the second clamp 4 are opened and closed by the linkage mechanism 2. Compared with the lead screw mechanism in the prior art, the structure is simpler and can achieve rapid opening and closing. Moreover, it avoids the situation where the lead screw cannot work due to surface wear or rust.

[0032] In this embodiment, as Figures 2-4 As shown, the linkage mechanism 2 includes a connecting plate 13 and an operating rod 14. The first end of the connecting plate 13 is hinged to the operating rod 14, and the second end is hinged to the second lobe clamp 4. The first end of the connecting plate 13 is also hinged to the first lobe clamp 3 through a hinge plate 15. When the operating rod 14 is rotated upward, it can drive the first lobe clamp 3 and the second lobe clamp 4 to open. When the operating rod 14 is rotated downward, it can drive the first lobe clamp 3 and the second lobe clamp 4 to close.

[0033] In this embodiment, a hinge seat is provided at the open end of both the first lobe clamp 3 and the second lobe clamp 4. The hinge plate 15 is hinged to the hinge seat on the first lobe clamp 3, and the second end of the connecting plate 13 is hinged to the hinge seat on the second lobe clamp 4.

[0034] Specifically, two connecting plates 13 are symmetrically arranged. The first ends of the two connecting plates 13 are respectively hinged to both sides of the operating rod 14. The operating rod 14 is located between the two connecting plates 13 and can be set at a certain angle according to specific working needs. The second ends of the two connecting plates 13 are respectively hinged to both sides of the hinge seat on the second lobe clamp 4. Similarly, two hinge plates 15 are symmetrically arranged. The two hinge plates 15 are arranged in parallel and are located inside the two connecting plates 13. One end of the two hinge plates 15 is respectively hinged to the first end of the two connecting plates 13, and the other end of the two hinge plates 15 is respectively hinged to both sides of the hinge seat on the first lobe clamp 3.

[0035] In this embodiment, a guide plate 10 is also provided on the side of the blind plate seat 12 away from the blind plate cover 11. Two arc-shaped guide grooves are symmetrically arranged on the guide plate 10. The first lobe clamp 3 and the second lobe clamp 4 are each connected to a guide screw 9. The two guide screws 9 are respectively inserted into the two arc-shaped guide grooves and can move along the corresponding arc-shaped guide grooves to guide the opening and closing of the first lobe clamp 3 and the second lobe clamp 4.

[0036] In this embodiment, the quick-opening blind flange also includes a safety interlock plate 1. When the first flap clamp 3 and the second flap clamp 4 are closed, the first flap clamp 3 and the second flap clamp 4 can be fixedly connected to the blind flange cover 11 through the safety interlock plate 1.

[0037] Specifically, the safety interlock plate 1 can be fixedly connected to the first lobe clamp 3 and the second lobe clamp 4 respectively by two first positioning pins 5; wherein, the safety interlock plate 1, the first lobe clamp 3 and the second lobe clamp 4 are respectively provided with positioning holes, and the first positioning pins 5 pass through the corresponding positioning holes to fix the safety interlock plate 1, the first lobe clamp 3 and the second lobe clamp 4.

[0038] In this embodiment, the safety interlock plate 1 can also be fixedly connected to the operating rod 14 via the second positioning pin 7.

[0039] In this embodiment, the top of the blind plate cover 11 is also provided with a vent hole for releasing air when the blind plate cover 11 is opened. A safety vent valve 6 can be installed in the vent hole. Specifically, the outer part of the vent hole has a threaded structure, and the safety vent valve 6 can be screwed into the vent hole.

[0040] Furthermore, the safety interlock plate 1 is also provided with a venting valve hole. When the safety interlock plate 1 is fixedly connected to the blind plate cover 11, the venting valve hole and the venting hole are coaxially arranged. The safety venting valve 6 can pass through the venting valve hole and the venting hole in sequence to fix the safety interlock plate 1 to the outside of the blind plate cover 11.

[0041] In this embodiment, after the quick-opening blind flange is fully closed, the positioning hole on the safety interlock plate 1 is aligned with the corresponding positioning holes on the first clamp 3 and the second clamp 4, and then the safety interlock plate 1 is installed on the outer surface of the blind flange cover 11. At this time, the vent valve hole on the safety interlock plate 1 is coaxial with the vent hole on the blind flange cover 11, and the safety vent valve 6 is screwed into the vent hole of the blind flange cover 11. The positioning hole at the other end of the safety interlock plate 1 is also aligned with the axis of the positioning hole on the operating rod 14, and the second positioning pin 7 can be inserted into the positioning holes of both, and then the fastening nut 8 is used to install and fix the second positioning pin 7 at its tail.

[0042] After completing all the above steps, the linkage mechanism 2, clamp assembly, and blind flange cover 11 can be completely fixed to prevent accidental opening of the quick-opening blind flange and potential danger.

[0043] 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 flange, comprising a clamp assembly, a blind flange cover, and a blind flange seat, wherein the blind flange seat is connectable to an opening in a device, one side of the blind flange cover is hinged to the blind flange seat, and the blind flange cover is capable of closing the opening in the device, and the clamp assembly is capable of locking the blind flange cover; characterized in that: The clamp assembly includes a first clamp and a second clamp. The first clamp and the second clamp are respectively disposed on both sides of the equipment opening. One end of the first clamp and the second clamp are hinged to the equipment opening, and the other end is connected through a linkage mechanism. The linkage mechanism can drive the first clamp and the second clamp to open and close, so as to loosen or lock the blind plate cover. The linkage mechanism includes a connecting plate and an operating rod. The first end of the connecting plate is hinged to the operating rod, and the second end is hinged to the second lobe clamp. The first end of the connecting plate is also hinged to the first lobe clamp via a hinge plate. When the operating rod is rotated upward, the first lobe clamp and the second lobe clamp can be opened. When the operating rod is rotated downward, the first lobe clamp and the second lobe clamp can be closed. The quick-opening blind flange also includes a safety interlock plate. When the first and second clamps are closed, the first and second clamps can be fixedly connected to the blind flange cover via the safety interlock plate. The safety interlock plate can be installed on the outer surface of the blind flange cover. The safety interlock plate can be fixedly connected to the first and second clamps via two first positioning pins respectively. The safety interlock plate can also be fixedly connected to the operating rod via a second positioning pin.

2. The quick-opening blind plate according to claim 1, characterized in that: Both the first and second lobe clamps have a hinge seat at their open ends. The hinge plate is hinged to the hinge seat on the first lobe clamp, and the second end of the connecting plate is hinged to the hinge seat on the second lobe clamp.

3. The quick-opening blind plate according to claim 2, characterized in that: Two connecting plates are symmetrically arranged. The first ends of the two connecting plates are respectively hinged to both sides of the operating rod, and the second ends of the two connecting plates are respectively hinged to both sides of the hinge seat on the second lobe clamp. Two hinge plates are symmetrically arranged. The two hinge plates are arranged in parallel and are located inside the two connecting plates. One end of the two hinge plates is respectively hinged to the first end of the two connecting plates, and the other end of the two hinge plates is respectively hinged to both sides of the hinge seat on the first lobe clamp.

4. The quick-opening blind plate according to claim 1, characterized in that: A guide plate is also provided on the side of the blind plate seat away from the blind plate cover. Two arc-shaped guide grooves are symmetrically arranged on the guide plate. A guide screw is connected to both the first and second lobe clamps. The two guide screws are respectively inserted into the two arc-shaped guide grooves and can move along the corresponding arc-shaped guide grooves to guide the opening and closing of the first and second lobe clamps.

5. The quick-opening blind plate according to claim 1, characterized in that: The top of the blind flange cover is also provided with a vent hole, and a safety vent valve can be installed in the vent hole.

6. The quick-opening blind plate according to claim 5, characterized in that: The safety interlock plate is also provided with a vent valve hole. When the safety interlock plate is fixedly connected to the blind plate cover, the vent valve hole and the vent hole are coaxially arranged. The safety vent valve can pass through the vent valve hole and the vent hole in sequence to fix the safety interlock plate to the outside of the blind plate cover.

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