Movable protective cover structure of screw pump liquid inlet flange

Abstract

The utility model discloses a movable protective cover structure of a screw pump liquid inlet flange, which comprises a limiting piece, a fixing ring and limiting plates symmetrically mounted on the fixing ring, an annular groove is formed in the outer surface of the fixing ring, and limiting grooves communicated with the annular groove are formed in the limiting plates; the movable protective cover assembly is slidably arranged on the outer side of the limiting plate in a sleeving mode and comprises a connecting half ring, a protective half shell and an inserting column, the connecting half ring and the protective half shell are oppositely attached, the inserting column penetrates through the protective half shell, and a clamping plate slidably connected with the limiting plate is arranged on the inner surface of the connecting half ring; the protective cover can slide vertically, a movable flange protective cover is arranged to facilitate design of an inspection interface, a semicircle formed by a connecting semi-ring and a protective semi-shell is folded on the outer side of a limiting plate to form the protective cover, a clamping plate slides vertically along a limiting groove, the protective cover can slide vertically to facilitate inspection of the flange interface, and a positioning column is embedded into a limiting hole. And the counterweight ring tightly presses the connecting half ring and the protective half shell, so that the connecting half ring and the protective half shell are in a stable state.

Description

Technical Field

[0001] The utility model belongs to the technical field of flange protective covers, and particularly relates to a movable protective cover structure for the liquid inlet flange of a screw pump. Background Art

[0002] The liquid inlet of the screw pump rod is connected to the input pipeline through a flange. Generally, a flange protective cover is installed outside the flange interface. The function of the flange protective cover is to fix the flange connection port, prevent loosening of the connection, and protect the connection port to extend its service life, including protecting the safety of personnel, equipment, and the environment, reducing environmental pollution, and preventing rust;

[0003] The flange protective cover is installed outside the flange interface. Generally, the flange protective cover is composed of two semi - circles. During installation, the two semi - circles are closed, and fixed by a bolt or a locking buckle. When checking whether there is a fault in the liquid inlet flange of the screw pump rod and the input pipeline flange interface, it is necessary to disassemble the flange protective cover and then reinstall it after disassembly. During the inspection process, it is more troublesome to disassemble and install the flange protective cover. When the flange protective cover protects the outside of the liquid inlet flange of the screw pump rod and the input pipeline flange interface, there is a problem that there is no design of a movable flange protective cover for easy inspection of the interface. Therefore, this application proposes a movable protective cover structure for the liquid inlet flange of a screw pump. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a movable protective cover structure for the liquid inlet flange of a screw pump, so as to solve the problem in the above - mentioned background art that when using the flange protective cover, there is no design of a movable flange protective cover for easy inspection of the interface.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A movable protective cover structure for the liquid inlet flange of a screw pump, comprising

[0006] A limiting member, including a fixed ring and limiting plates symmetrically installed on the fixed ring. A ring groove is formed on the outer surface of the fixed ring, and a limiting groove communicating with the ring groove is formed on the limiting plate;

[0007] An activity protective cover assembly slidably sleeved outside the limiting plate, including opposing and fitting connection half - rings and protective half - shells, and a plug post penetrating through the protective half - shell. A clamping plate is arranged on the inner surface of the connection half - ring and is slidably connected with the limiting plate.

[0008] Preferably, the fixed ring includes opposing and fitting half - ring shells. The center of the fixed ring and the center of the limiting plate are on the same axis, and the limiting plate is in a curved shape.

[0009] Preferably, the clamping plate is in a "T" - shaped structure. The end of the clamping plate away from the connection half - ring is in a curved plate - like structure, and the clamping plate cooperates with the limiting groove.

[0010] Preferably, an elastic component is provided at the bottom end of the limiting plate. The elastic component includes an extension plate connected to the limiting plate, a moving plate parallel to the extension plate, and a contraction spring with two ends respectively connected to the extension plate and the moving plate. A clamping post is provided on the extension plate, and one end of the contraction spring is sleeved outside the clamping post.

[0011] Preferably, a screw hole is provided on the surface of the bottom end of the limiting plate. A through hole with the same inner diameter as the screw hole is opened at the central position of the moving plate. The outer diameter of the insertion post is the same as the inner diameters of the through hole and the screw hole, and an external thread is provided on the outer surface of one end of the insertion post.

[0012] Preferably, a pressing component is provided outside the limiting plate. The pressing component includes symmetrically distributed counterweight rings and positioning posts installed on the counterweight rings.

[0013] Preferably, extension plates are provided at both ends of the counterweight ring. A hand-tightening screw penetrates through the extension plates of the counterweight ring, and a limiting hole for the positioning post to be embedded is provided on the connecting half-ring.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] In the present utility model, the protective cover can slide vertically. There is a movable flange protective cover for facilitating the inspection of the interface. The semi-circle formed by the connecting half-ring and the protective half-shell closes outside the limiting plate to form the protective cover. The clamping plate slides vertically along the limiting groove. The protective cover can slide vertically, which is convenient for inspecting the flange interface. The positioning post is embedded in the limiting hole, and the counterweight ring tightly presses the protective cover composed of the connecting half-ring and the protective half-shell, making it in a stable state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is of the present utility model Figure 1 amplified structural diagram of part A;

[0018] Figure 3 is a sectional structural diagram of the connecting half-ring of the present utility model;

[0019] Figure 4 is a top-view structural diagram of the connecting half-ring of the present utility model;

[0020] Figure 5 is a side-view structural diagram of the limiting plate of the present utility model;

[0021] Figure 6 is of the present utility model Figure 5 amplified structural diagram of part B;

[0022] Figure 7It is a schematic cross-sectional structure diagram of the protective half shell of the utility model;

[0023] Figure 8 It is a schematic diagram of the top view of the counterweight ring of the utility model;

[0024] In the figure: 1, fixing ring; 2, limiting plate; 11, ring groove; 21, limiting groove; 22, extension plate; 23, contraction spring; 24, movable plate; 25, screw hole; 31, connecting half ring; 32, protective half shell; 33, plug column; 41, counterweight ring; 241, through hole; 311, clamping plate; 312, limiting hole; 411, positioning column. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0026] Example

[0027] See also Figures 1 to 8 The utility model provides a technical solution: a movable protective cover structure of a screw pump inlet flange, including a limiter, including a fixed ring 1, a limiter plate 2 symmetrically installed on the fixed ring 1, the fixed ring 1 is fixedly installed on the outer side of a pipeline connected to the screw pump inlet by a conventional method, the limiter plate 2 is combined with the fixed ring 1 by a conventional method, an annular groove 11 is provided on the outer surface of the fixed ring 1, a limiting groove 21 connected to the annular groove 11 is provided on the limiting plate 2, a clamping plate 311 is adapted to the annular groove 11 and the limiting groove 21, and is conducive to the movement of the clamping plate 311; a sliding sleeve The movable protective cover assembly arranged on the outer side of the limit plate 2 includes a connecting half ring 31 and a protective half shell 32 that are opposite and fitted together, and a plug column 33 that penetrates the protective half shell 32. The connecting half ring 31 and the protective half shell 32 are combined into a semicircle by conventional methods. The opposite semicircles are closed on the outer side of the limit plate 2 to form a protective cover, which plays the role of protecting the flange interface. The inner surface of the connecting half ring 31 is provided with a clamping plate 311 that is slidably connected to the limit plate 2. The clamping plate 311 slides vertically along the limiting groove 21, which can change the position of the above-mentioned protective cover, which is conducive to checking whether there is a fault in the flange interface of the screw pump liquid inlet.

[0028] In this embodiment, the fixing ring 1 includes opposing half-ring shells, the center of the fixing ring 1 and the center of the limiting plate 2 are on the same axis, the limiting plate 2 is curved, the fixing ring 1 is assembled on the outside of the pipe connected to the liquid inlet of the screw pump, and the limiting plate 2 is tightly attached to the pipe.

[0029] In this embodiment, the clamping plate 311 has a "T" - shaped structure. One end of the clamping plate 311 away from the connecting semi - ring 31 is a curved plate - like structure. The clamping plate 311 cooperates with the limiting groove 21. The clamping plate 311 slides vertically along the limiting groove 21, which can change the position of the above - mentioned protective cover, facilitating the inspection of whether there is a fault in the flange interface of the liquid inlet of the screw pump.

[0030] In this embodiment, an elastic component is provided at the bottom end of the limiting plate 2. The elastic component includes an extension plate 22 connected to the limiting plate 2, a moving plate 24 parallel to the extension plate 22, and a compression spring 23 with two ends respectively connected to the extension plate 22 and the moving plate 24. A clamping post is provided on the extension plate 22. One end of the compression spring 23 is sleeved outside the clamping post. The bottom surface of the limiting plate 2 and the extension plate 22 are combined by conventional methods. When the protective half - shell 32 moves downward, it squeezes the moving plate 24, making the compression spring 23 in a compressed state, and the protective half - shell 32 receives the elastic force of the compression spring 23.

[0031] In this embodiment, a screw hole 25 is provided on the surface of the bottom end of the limiting plate 2. A through - hole 241 with the same inner diameter as the screw hole 25 is opened at the central position of the moving plate 24. The outer diameter of the inserting post 33 is the same as the inner diameters of the through - hole 241 and the screw hole 25. An external thread is provided on the outer surface of one end of the inserting post 33. After the inserting post 33 penetrates through the through - hole 241, it is threadedly engaged with the screw hole 25. One end of the inserting post 33 is firmly connected to the limiting plate 2, making the protective half - shell 32 and the moving plate 24 in a stable state. A rubber damping ring is provided in the moving plate 24 at the through - hole 241 to increase the friction force and prevent the screw - connected inserting post 33 from loosening.

[0032] In this embodiment, a pressing component is provided outside the limiting plate 2. The pressing component includes symmetrically distributed counterweight rings 41 and positioning posts 411 installed on the counterweight rings 41. Extension plates are provided at both ends of the counterweight rings 41. A hand - tightened screw penetrates through the extension plates of the counterweight rings 41. A limiting hole 312 for the positioning post 411 to be embedded is provided on the connecting semi - ring 31. The counterweight rings 41 are assembled outside the limiting plate 2. The counterweight rings 41 move vertically, making the positioning posts 411 embedded in the limiting holes 312. The counterweight rings 41 tightly press the protective cover composed of the connecting semi - ring 31 and the protective half - shell 32 to make it in a stable state.

[0033] The working principle and usage process of the present utility model:

[0034] An external flange protective cover is installed outside the flange interface where the liquid inlet of the screw pump is connected to the pipeline. The fixing ring 1 is fixedly installed on the outside of the pipeline connected to the liquid inlet of the screw pump by conventional methods;

[0035] The connecting semi - ring 31 and the protective half - shell 32 are combined into a semi - circle by conventional methods. The opposing semi - circles are closed outside the limiting plate 2 to form a protective cover. At this time, the clamping plate 311 is inserted into the ring groove 11;

[0036] Rotate the protective cover to a suitable position so that the clamping plate 311 vertically moves down along the limiting groove 21 to the outside of the flange interface, playing a role in protecting the flange interface. In addition, the protective cover can slide vertically, and there is a movable flange protective cover for easy inspection of the flange interface design;

[0037] The protective cover composed of the connecting half-ring 31 and the protective half-shell 32 moves down to a suitable position. At this time, the protective half-shell 32 presses the moving plate 24, making the compression spring 23 in a compressed state, and the protective half-shell 32 receives the elastic force of the compression spring 23;

[0038] The insertion post 33 passes through the through hole 241 and is threadedly engaged with the screw hole 25. One end of the insertion post 33 is firmly connected to the limiting plate 2, making the protective half-shell 32 and the moving plate 24 in a stable state. The moving plate 24 is provided with a rubber damping ring in the through hole 241 to increase the friction and prevent the screw-connected insertion post 33 from loosening;

[0039] The positioning post 411 is embedded in the limiting hole 312, and the counterweight ring 41 tightly presses the protective cover composed of the connecting half-ring 31 and the protective half-shell 32 to make it in a stable state;

[0040] In summary: The protective cover can slide vertically, and there is a movable flange protective cover for easy inspection of the interface design. The semi-circle formed by the connecting half-ring 31 and the protective half-shell 32 closes on the outside of the limiting plate 2 to form a protective cover. The clamping plate 311 slides vertically along the limiting groove 21, and the protective cover can slide vertically for easy inspection of the flange interface.

[0041] Although the embodiments of the present invention have been shown and described (see the above detailed description), for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A movable protective cover structure for a screw pump inlet flange, characterized in that: include The limiting member comprises a fixing ring (1) and a limiting plate (2) symmetrically mounted on the fixing ring (1), wherein an annular groove (11) is provided on the outer surface of the fixing ring (1), and a limiting groove (21) communicating with the annular groove (11) is provided on the limiting plate (2); A movable protective cover assembly is slidably mounted on the outside of the limit plate (2), comprising a connecting half ring (31) and a protective half shell (32) that are opposite and fitted together, and a plug post (33) that penetrates the protective half shell (32). The inner surface of the connecting half ring (31) is provided with a clamping plate (311) that is slidably connected to the limit plate (2).

2. The movable protective cover structure of the screw pump liquid inlet flange according to claim 1 is characterized in that: The fixing ring (1) comprises oppositely fitted half ring shells, the center of the fixing ring (1) and the center of the limiting plate (2) are located on the same axis, and the limiting plate (2) is in a curved shape.

3. The movable protective cover structure of the screw pump liquid inlet flange according to claim 1 is characterized in that: The clamping plate (311) is a "T"-shaped structure, and one end of the clamping plate (311) away from the connecting half ring (31) is a curved plate-shaped structure, and the clamping plate (311) cooperates with the limiting groove (21).

4. The movable protective cover structure of the screw pump inlet flange according to claim 1 is characterized in that: An elastic component is provided on the bottom end of the limit plate (2), and the elastic component comprises an extension plate (22) connected to the limit plate (2), a movable plate (24) parallel to the extension plate (22), and a contraction spring (23) whose two ends are respectively connected to the extension plate (22) and the movable plate (24), and a clamping column is provided on the extension plate (22), and one end of the contraction spring (23) is sleeved on the outer side of the clamping column.

5. The movable protective cover structure of the screw pump liquid inlet flange according to claim 4 is characterized in that: A screw hole (25) is provided on the surface of the bottom end of the limiting plate (2), a through hole (241) having the same inner diameter as the screw hole (25) is provided at the center of the movable plate (24), the outer diameter of the through hole (241) of the plug post (33) is the same as the inner diameter of the screw hole (25), and an outer surface of one end of the plug post (33) is provided with an external thread.

6. The movable protective cover structure of the screw pump liquid inlet flange according to claim 1 is characterized in that: A clamping assembly is provided on the outer side of the limiting plate (2), and the clamping assembly comprises symmetrically distributed counterweight rings (41) and positioning columns (411) mounted on the counterweight rings (41).

7. The movable protective cover structure of the screw pump liquid inlet flange according to claim 6 is characterized in that: Extension plates are provided at both ends of the counterweight ring (41), and hand screws penetrate through the extension plates of the counterweight ring (41). The connecting half ring (31) is provided with a limiting hole (312) for the positioning column (411) to be embedded.

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