Multi-stage pressure reduction assembly and flanged pipe fitting using same

Abstract

The utility model relates to the technical field of flanged pipe fittings, in particular to a multi-stage pressure reduction assembly and a flanged pipe fitting using the multi-stage pressure reduction assembly. An L-shaped plate is arranged on the surface of the screw rod, a stress rod is arranged on the surface of the L-shaped plate, and a clamping plate is arranged at the bottom of the stress rod; the nut is arranged on the surface of the screw rod; the device has the beneficial effects that the ends of the first flange pipe and the second flange pipe are in butt joint, the screw rod is inserted into the ends of the first flange pipe and the second flange pipe, the nut is screwed to the end of the screw rod, the first flange pipe and the second flange pipe are fixed, and when the screw rod and the nut are screwed, the movable ring abuts against the surface of the second flange pipe; and when the sleeving ring moves along with the screw rod, the jacking plate is jacked on the surface of the stress rod, and the moving ring moves along with the screw rod, so that the L-shaped plate moves to the top of the end part of the first flange pipe and the top of the end part of the second flange pipe.

Description

Technical Field

[0001] The utility model relates to the field of flange pipe fittings, in particular to a multi-stage pressure reducing component and a flange pipe fitting using the component. Background Art

[0002] Flange pipe fittings are a type of welded pipe fittings. Such pipe fittings are used to match pipelines. Some are processed and some are not. Some castings are made by casting the flange together.

[0003] In the prior art, the flanges are fixed by screws, and the ends of the screws are held at both ends of the flanges to press the two sets of flanges against each other to achieve fixation and sealing between the flanges.

[0004] However, when the flange is fixed with a screw, when the water flow inside the pipe hits the pipe, the force is all concentrated on the surface of the screw, causing the screw to be easily damaged and difficult to remove after being damaged. Utility Model Content

[0005] The utility model aims to provide a multi-stage pressure reducing assembly and a flange pipe fitting using the assembly to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a multi-stage decompression assembly, the multi-stage decompression assembly comprising:

[0007] A second flange pipe, wherein the first flange pipe is disposed at an end of the second flange pipe;

[0008] A screw rod, an L-shaped plate is arranged on the surface of the screw rod, a force-bearing rod is arranged on the surface of the L-shaped plate, and a clamping plate is arranged at the bottom of the force-bearing rod; and

[0009] The nut is provided on the surface of the screw.

[0010] Preferably, the screw is inserted into the ends of the first flange tube and the second flange tube, a nut is threaded on the end of the screw, a movable ring is sleeved on the surface of the screw, the movable ring can move on the surface of the screw, and an L-shaped plate is fixed on the surface of the movable ring.

[0011] Preferably, a stress-bearing rod is inserted into the surface of the L-shaped plate, the stress-bearing rod can move inside the L-shaped plate, and a clamping plate is fixed to the end of the stress-bearing rod, and the clamping plate moves with the stress-bearing rod.

[0012] Preferably, a ring groove is formed on the surface of the screw rod, a sleeve ring is sleeved on the surface of the ring groove, the sleeve ring can rotate in the ring groove, and a top holding plate is fixed on the surface of the sleeve ring.

[0013] Preferably, a ring groove is provided on the surface of the nut, and a top holding plate and a sleeve ring are provided on the surface of the nut.

[0014] Preferably, the supporting plate is supported on the surface of the force-bearing rod as the screw moves, and the force-bearing rod drops after being supported by the supporting plate. A limiting block is inserted into the surface of the first flange tube and the second flange tube, and a spring is connected to the end of the limiting block. The spring is located inside the first flange tube and the second flange tube.

[0015] A flange pipe fitting comprises the above-mentioned multi-stage pressure reducing assembly.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model proposes that the ends of the first flange pipe and the second flange pipe are butted, the screw is inserted into the ends of the first flange pipe and the second flange pipe, the nut is screwed on the end of the screw, the first flange pipe and the second flange pipe are fixed, and the movable ring is supported on the surface of the second flange pipe when the screw and the nut are screwed, and when the sleeve ring moves with the screw, the top holding plate is supported on the surface of the force-bearing rod, and the movable ring moves with the screw, so that the L-shaped plate moves to the top of the ends of the first flange pipe and the second flange pipe, the top holding plate on the surface of the nut is supported on the surface of another group of force-bearing rods, and the force-bearing rods are lowered after being supported, so that the clamping plate is clamped on the top of the connecting end of the first flange pipe and the second flange pipe, sharing the force of the screw and the nut, and the surfaces of the first flange pipe and the second flange pipe are inserted with a limiting block, the end of the limiting block is provided with a spring, and the spring of the limiting block extends downward under the support, and when the screw and the nut are screwed, the limiting block is located at the ends of the screw and the nut, which plays a role in preventing the screw and the nut from moving and also plays a role in sharing the force of the screw and the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the flange pipe structure of the utility model;

[0020] Figure 3 for Figure 2 A schematic diagram of the enlarged structure in the middle.

[0021] In the figure: a first flange pipe 1, a second flange pipe 2, a clamping plate 3, an L-shaped plate 4, a force-bearing rod 5, a top holding plate 6, a sleeve ring 7, a ring groove 8, a movable ring 9, a screw rod 10, a limit block 11, and a nut 12. DETAILED DESCRIPTION

[0022] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] See also Figure 1-Figure 3 The utility model provides a technical solution: a multi-stage pressure reducing assembly, which includes: a second flange pipe 2, a first flange pipe 1 is arranged at the end of the second flange pipe 2; a screw rod 10, an L-shaped plate 4 is arranged on the surface of the screw rod 10, a force-bearing rod 5 is arranged on the surface of the L-shaped plate 4, and a clamping plate 3 is arranged at the bottom of the force-bearing rod 5; and a nut 12, which is arranged on the surface of the screw rod 10, the screw rod 10 is inserted into the ends of the first flange pipe 1 and the second flange pipe 2, and the nut 12 is screwed to the ends of the screw rod 10 to fix the first flange pipe 1 and the second flange pipe 2.

[0025] Embodiment 2

[0026] On the basis of Example 1, the screw 10 is inserted into the ends of the first flange tube 1 and the second flange tube 2, and a nut 12 is threaded on the end of the screw 10. A movable ring 9 is sleeved on the surface of the screw 10. The movable ring 9 can move on the surface of the screw 10. An L-shaped plate 4 is fixed on the surface of the movable ring 9. The movable ring 9 moves with the screw 10, so that the L-shaped plate 4 moves to the top of the ends of the first flange tube 1 and the second flange tube 2.

[0027] A force-bearing rod 5 is inserted into the surface of the L-shaped plate 4, and the force-bearing rod 5 can move inside the L-shaped plate 4. A clamping plate 3 is fixed to the end of the force-bearing rod 5. The clamping plate 3 moves with the force-bearing rod 5. The force-bearing rod 5 is supported and then lowered, so that the clamping plate 3 is clamped at the top of the connecting end of the first flange pipe 1 and the second flange pipe 2, sharing the force of the screw 10 and the nut 12.

[0028] An annular groove 8 is provided on the surface of the screw rod 10, and a sleeve ring 7 is sleeved on the surface of the annular groove 8. The sleeve ring 7 can rotate in the annular groove 8, and a supporting plate 6 is fixed on the surface of the sleeve ring 7. When the sleeve ring 7 moves with the screw rod 10, the supporting plate 6 is supported on the surface of the force-bearing rod 5.

[0029] Embodiment 3

[0030] On the basis of the second embodiment, a ring groove 8 is opened on the surface of the nut 12, and a supporting plate 6 and a sleeve ring 7 are arranged on the surface of the nut 12. The supporting plate 6 is supported on the surface of the force-bearing rod 5 during the movement of the screw 10, and the force-bearing rod 5 is lowered after being supported by the supporting plate 6. The surfaces of the first flange tube 1 and the second flange tube 2 are plugged with a limiting block 11, and the ends of the limiting block 11 are connected with a spring, and the spring is located inside the first flange tube 1 and the second flange tube 2. The surfaces of the first flange tube 1 and the second flange tube 2 are plugged with a limiting block 11, and the ends of the limiting block 11 are provided with a spring. The spring of the limiting block 11 extends out from the top support. When the screw 10 and the nut 12 are screwed together, the limiting block 11 is located at the ends of the screw 10 and the nut 12, so as to prevent the screw 10 and the nut 12 from moving.

[0031] In actual use, the ends of the first flange pipe 1 and the second flange pipe 2 are butted, the screw 10 is inserted into the ends of the first flange pipe 1 and the second flange pipe 2, the nut 12 is screwed on the ends of the screw 10, the first flange pipe 1 and the second flange pipe 2 are fixed, and while the screw 10 and the nut 12 are screwed, the movable ring 9 is supported on the surface of the second flange pipe 2, when the sleeve ring 7 moves with the screw 10, the top holding plate 6 is supported on the surface of the force-bearing rod 5, and the movable ring 9 moves with the screw 10, so that the L-shaped plate 4 moves to the top of the ends of the first flange pipe 1 and the second flange pipe 2, and the surface of the nut 12 The holding plate 6 is held on the surface of another group of force-bearing rods 5. The force-bearing rods 5 drop after being held, so that the clamping plate 3 is clamped on the top of the connecting end of the first flange pipe 1 and the second flange pipe 2, sharing the force of the screw 10 and the nut 12, and the surfaces of the first flange pipe 1 and the second flange pipe 2 are inserted with a limit block 11, and a spring is provided at the end of the limit block 11. The spring of the limit block 11 extends out under the support. When the screw 10 and the nut 12 are screwed together, the limit block 11 is located at the end of the screw 10 and the nut 12, which prevents the screw 10 and the nut 12 from moving and also shares the force of the screw 10 and the nut 12.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage pressure reducing assembly, characterized in that: The multi-stage pressure reducing assembly comprises: A second flange pipe (2), wherein the first flange pipe (1) is arranged at the end of the second flange pipe (2); A screw rod (10), an L-shaped plate (4) is arranged on the surface of the screw rod (10), a force-bearing rod (5) is arranged on the surface of the L-shaped plate (4), and a clamping plate (3) is arranged at the bottom of the force-bearing rod (5); and The nut (12) is arranged on the surface of the screw rod (10).

2. A multi-stage pressure reducing assembly according to claim 1, characterized in that: The screw rod (10) is inserted into the ends of the first flange tube (1) and the second flange tube (2), a nut (12) is threadedly connected to the ends of the screw rod (10), a movable ring (9) is sleeved on the surface of the screw rod (10), the movable ring (9) can move on the surface of the screw rod (10), and an L-shaped plate (4) is fixed on the surface of the movable ring (9).

3. A multi-stage pressure reducing assembly according to claim 2, characterized in that: A force-bearing rod (5) is inserted into the surface of the L-shaped plate (4), and the force-bearing rod (5) can move inside the L-shaped plate (4). A clamping plate (3) is fixed to the end of the force-bearing rod (5), and the clamping plate (3) moves along with the force-bearing rod (5).

4. A multi-stage pressure reducing assembly according to claim 3, characterized in that: The surface of the screw rod (10) is provided with an annular groove (8), the surface of the annular groove (8) is sleeved with a sleeve ring (7), the sleeve ring (7) can rotate in the annular groove (8), and a top holding plate (6) is fixed on the surface of the sleeve ring (7).

5. A multi-stage pressure reducing assembly according to claim 4, characterized in that: The surface of the nut (12) is provided with an annular groove (8), and the surface of the nut (12) is provided with a top holding plate (6) and a sleeve ring (7).

6. A multi-stage pressure reducing assembly according to claim 5, characterized in that: The supporting plate (6) is supported on the surface of the force-bearing rod (5) as the screw rod (10) moves. The force-bearing rod (5) is supported by the supporting plate (6) and then descends. The surfaces of the first flange tube (1) and the second flange tube (2) are plugged with a limiting block (11). The end of the limiting block (11) is connected to a spring, which is located inside the first flange tube (1) and the second flange tube (2).

7. A flange pipe fitting, characterized in that: A multi-stage decompression assembly comprising any one of claims 1 to 6.

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