Anti-explosion regulating valve

Abstract

The utility model discloses an anti-explosion regulating valve which comprises a regulating valve body arranged between pipelines, end plates of annular structures are installed at the two ends of a regulating valve column body, a plurality of positioning columns are installed on the end plates, and the other ends of the positioning columns penetrate through positioning holes to be inserted into screw holes of a connecting flange. Shaft rods are installed at the other ends of the limiting blocks, pull rings are arranged at the two ends of the adjusting valve column body in a sleeving mode, the other ends of the shaft rods penetrate through the shaft holes to be installed on the pull rings, locking sleeves are connected to the outer portions of the end plates in a threaded mode, and a plurality of positioning blocks abutting against the connecting flanges are movably installed at one ends of the locking sleeves. The positioning device is simple in structure, the positioning column can be inserted into the screw hole of the connecting flange so as to finish accurate alignment with the pipeline, the positioning block can be popped out and arranged on the outer side face of the connecting flange after the locking sleeve rotates outwards, and the positioning block can be tightly clamped after the locking sleeve gets close inwards. The connection flange and the end plate can be directly fixed through extrusion of the positioning block, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to an explosion-proof regulating valve. Background Art

[0002] The explosion-proof control valve is an industrial valve widely used in flammable and explosive environments. It combines the characteristics of an electric actuator and an explosion-proof control valve, and achieves precise control of valve opening, closing and flow rate through electric drive.

[0003] However, most of the existing explosion-proof regulating valves are fixed to the pipeline using flanges and screws. The number of installation screws is large. Before all the screws are installed, the operator needs to manually keep the regulating valve and the flange fixing holes of the pipeline opposite to each other in order to install the screws. The installation process is time-consuming and labor-intensive, and it is difficult to meet actual usage needs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an explosion-proof regulating valve that can automatically complete positioning without the use of screws, and can be quickly installed and subsequently disassembled, so as to solve the problems raised in the above-mentioned background technology.

[0005] The utility model is realized through the following technical solutions: an explosion-proof regulating valve, comprising a regulating valve body arranged between pipelines, wherein both ends of the regulating valve cylinder are equipped with end plates of annular structure, the end surfaces of the pipelines are equipped with connecting flanges, the opposite surfaces of the end plates are thickened, the insides of the end plates are annularly structured and provided with multiple chambers, the ends of the chambers facing the connecting flanges are equipped with positioning holes, the other ends of the chambers are equipped with axial holes, and limit blocks are provided in the chambers, one end of the limit blocks is equipped with positioning columns, the other ends of the positioning columns are inserted into the screw holes of the connecting flanges through the positioning holes, the other ends of the limit blocks are equipped with shaft rods, both ends of the regulating valve cylinder are sleeved with pull rings, the other ends of the shaft rods are installed on the pull rings through the axial holes, the outsides of the end plates are threadedly connected with locking sleeves, and one end of the locking sleeves is movably equipped with multiple positioning blocks that conflict with the connecting flanges.

[0006] As a preferred technical solution, a plurality of mounting portions are protruded on the outer ring surface of the locking sleeve, and a positioning groove is provided on the inner ring surface of the locking sleeve opposite to the mounting portion. One end of the positioning block is inserted into the positioning groove, and the other end is arranged to abut against the outer end surface of the connecting flange. A screw hole passing through the positioning block is provided on the positioning block, and a sealed bearing is embedded in the outer end surface of the mounting portion opposite to the screw hole. A screw is installed in the inner ring of the sealed bearing, one end of the screw is threadedly connected to the screw hole, and a grip rod is installed on the other end.

[0007] As a preferred technical solution, the outer ring surface of the end plate is provided with an external thread, the inner ring surface of the locking sleeve is provided with an internal thread, and the locking sleeve is engaged with the external thread of the end plate through the internal thread.

[0008] As a preferred technical solution, a compression spring is sleeved on a section of the shaft located inside the chamber, one end of the compression spring is installed on the limit block, and the other end is installed on the inner wall surface of the chamber.

[0009] As a preferred technical solution, the diameter of the positioning column matches the inner diameter of the positioning hole and the screw hole on the connecting flange.

[0010] As a preferred technical solution, the inner diameter of the chamber is set larger than the inner diameter of the positioning hole.

[0011] As a preferred technical solution, a retreat space is provided between the positioning block and the positioning groove for the positioning block to be fully retracted.

[0012] The beneficial effects of the utility model are as follows: the utility model has a simple structure, and after the regulating valve body moves between the pipelines, the positioning column is automatically popped out by the elasticity of the compression spring, so that the positioning column is inserted into the screw hole of the connecting flange to complete the precise alignment with the pipeline, and after the locking sleeve is rotated outward, the positioning block can be popped out and arranged on the outer surface of the connecting flange, and after the locking sleeve is moved inward, the fixing between the connecting flange and the end plate can be directly completed by squeezing the positioning block, and the gap between the connecting flange and the end plate can be sealed by the locking sleeve to ensure the connection quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the present invention after any handle is removed;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model after removing any connecting flanges and pipes;

[0017] Figure 4 It is a cross-sectional view of the connecting flange and the end plate in the present invention.

[0018] Among them, 1. regulating valve body; 2. end plate; 3. pipeline; 4. connecting flange; 5. positioning column; 6. locking sleeve; 7. mounting part; 8. grip rod; 9. positioning block; 10. screw rod; 11. sealed bearing; 12. pull ring; 13. limit block; 14. compression spring; 15. shaft rod. DETAILED DESCRIPTION

[0019] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0020] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.

[0021] Any feature disclosed in this specification (including any appended claims, abstract, and drawings), unless otherwise stated, may be replaced by other equivalent or similar features. In other words, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0022] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, an explosion-proof regulating valve of the present invention comprises a regulating valve body 1 arranged between the pipelines 3, and both ends of the regulating valve cylinder are installed with end plates 2 of annular structure, and the end surfaces of the pipelines 3 are installed with connecting flanges 4, and the opposite surfaces of the end plates 2 are thickened. The inside of the end plates 2 is annular and provided with multiple chambers, and the chambers are provided with positioning holes at one end facing the connecting flange 4, and axial holes are provided at the other end of the chambers. Limit blocks 13 are provided in the chambers, and positioning columns 5 are installed at one end of the limit blocks 13. The other ends of the positioning columns 5 pass through the positioning holes and are inserted into the screw holes of the connecting flanges 4, and the other ends of the limit blocks 13 are installed with shaft rods 15. Both ends of the regulating valve cylinder are sleeved with pull rings 12, and the other ends of the shaft rods 15 pass through the axial holes and are installed on the pull rings 12. The outside of the end plates 2 are threadedly connected with locking sleeves 6, and one end of the locking sleeves 6 is movably installed with multiple positioning blocks 9 that conflict with the connecting flanges 4;

[0023] Among them, the main body of the regulating valve is an explosion-proof regulating valve, which is an industrial valve widely used in flammable and explosive environments.

[0024] In this embodiment, a plurality of mounting portions 7 are protruded on the outer ring surface of the locking sleeve 6, and a positioning groove is provided on the inner ring surface of the locking sleeve 6 opposite to the mounting portion 7. One end of the positioning block 9 is inserted into the positioning groove, and the other end is set to abut against the outer end surface of the connecting flange 4. The positioning block 9 is provided with a screw rod 10 hole passing through the positioning block 9, and a sealed bearing 11 is embedded and installed on the outer end surface of the mounting portion 7 opposite to the screw rod 10 hole. A screw rod 10 is installed in the inner ring of the sealed bearing 11, one end of the screw rod 10 is threadedly connected to the screw rod 10 hole, and the other end is installed with a grip rod 8.

[0025] In this embodiment, the outer ring surface of the end plate 2 is provided with an external thread, and the inner ring surface of the locking sleeve 6 is provided with an internal thread. The locking sleeve 6 is engaged with the external thread on the end plate 2 through the internal thread.

[0026] Among them, a rubber ring can be embedded in the middle of the inner ring of the locking sleeve, and the rubber ring can seal the gap between the end plate and the connecting flange, thereby increasing the sealing effect. The gap between the two can be blocked by the locking sleeve, thereby further increasing the sealing effect.

[0027] In this embodiment, a compression spring 14 is sleeved on a section of the shaft 15 located inside the chamber. One end of the compression spring 14 is mounted on the limit block 13, and the other end is mounted on the inner wall surface of the chamber.

[0028] In this embodiment, the diameter of the positioning column 5 matches the inner diameter of the positioning hole and the screw hole on the connecting flange 4, so that the positioning column can be accurately and stably inserted into the screw hole of the connecting flange, thereby increasing the accuracy of alignment.

[0029] In this embodiment, the inner diameter of the chamber is set to be larger than the inner diameter of the positioning hole, so that the limit block is restricted and prevented from moving out of the chamber.

[0030] In this embodiment, a retreat space is provided between the positioning block 9 and the positioning groove for the positioning block 9 to be fully retracted, so that the positioning block can be completely retracted into the positioning groove, thereby avoiding affecting the disassembly of the regulating valve body.

[0031] During installation, the shaft is pulled inward through the pull ring. The rotation of the shaft drives the limit block and the positioning column, causing the positioning column to retract into the positioning hole, and the locking sleeve rotates inward until the end face of the locking sleeve does not protrude from the outer end face of the end plate. At this time, the regulating valve body can be directly moved between the pipes. After releasing the pull ring, the elastic energy of the compression spring pushes the limit block and the positioning column outward, so that the positioning column can automatically be inserted into the screw hole of the connecting flange, thereby completing direct and precise alignment with the connecting flange.

[0032] After the above is completed, the locking sleeve is moved outward along the external thread by rotating the locking sleeve in the opposite direction of the grip rod until one end of the locking sleeve moves to the outside of the connecting flange. At this time, the screw rod can be rotated by the grip rod, and the rotation of the screw rod drives the positioning block until the positioning block is moved out of the positioning groove. After moving out, the locking sleeve can be rotated inward by the grip rod to make the locking sleeve move toward the regulating valve body again. During the consideration process, the positioning block can come into contact with the outer end face of the connecting flange, thereby pressing and sealing the connecting flange and the end plate.

[0033] On the contrary, after rotating the handle in the opposite direction, the rotation of the handle can drive the screw again, and the rotation of the screw can make the positioning block enter the positioning groove again. After losing the obstruction of the positioning block, the locking sleeve can be detached from the outside of the connecting flange, and after removing the positioning column, the regulating valve body can be directly taken out from between the pipes, which greatly facilitates disassembly.

[0034] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that do not require creative effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. An explosion-proof regulating valve, characterized in that: The invention comprises a regulating valve body (1) arranged between pipelines (3), wherein both ends of the regulating valve body are provided with annular end plates (2), the end surfaces of the pipelines (3) are provided with connecting flanges (4), the opposite surfaces of the end plates (2) are provided with thickening, the inside of the end plates (2) are provided with a plurality of chambers in annular structure, the end of the chamber facing the connecting flange (4) is provided with a positioning hole, the other end of the chamber is provided with an axial hole, and a limit block (13) is provided in the chamber, and one end of the limit block (13) is provided with a stop block (13). A positioning column (5) is installed, and the other end of the positioning column (5) is inserted into the screw hole of the connecting flange (4) through the positioning hole, and the other end of the limit block (13) is installed with a shaft rod (15). Both ends of the regulating valve body are sleeved with a pull ring (12), and the other end of the shaft rod (15) is installed on the pull ring (12) through the shaft hole. The outside of the end plate (2) is threadedly connected with a locking sleeve (6), and one end of the locking sleeve (6) is movably installed with a plurality of positioning blocks (9) that contact the connecting flange (4).

2. The explosion-proof regulating valve according to claim 1, characterized in that: The outer ring surface of the locking sleeve (6) is protruded to form a plurality of mounting portions (7), the inner ring surface of the locking sleeve (6) is provided with a positioning groove at a position facing the mounting portion (7), one end of the positioning block (9) is inserted into the positioning groove, and the other end is arranged to abut against the outer end surface of the connecting flange (4), the positioning block (9) is provided with a screw rod (10) hole passing through the positioning block (9), the outer end surface of the mounting portion (7) is embedded with a sealed bearing (11) at a position facing the screw rod (10) hole, the inner ring of the sealed bearing (11) is provided with a screw rod (10), one end of the screw rod (10) is threadedly connected to the screw rod (10) hole, and the other end is provided with a gripping rod (8).

3. The explosion-proof regulating valve according to claim 1, characterized in that: The outer ring surface of the end plate (2) is provided with an external thread, the inner ring surface of the locking sleeve (6) is provided with an internal thread, and the locking sleeve (6) is meshed and connected with the external thread on the end plate (2) through the internal thread.

4. The explosion-proof regulating valve according to claim 1, characterized in that: A compression spring (14) is sleeved on a section of the shaft (15) located inside the chamber. One end of the compression spring (14) is mounted on the limit block (13), and the other end is mounted on the inner wall surface of the chamber.

5. The explosion-proof regulating valve according to claim 1, characterized in that: The diameter of the positioning column (5) matches the inner diameter of the positioning hole and the screw hole on the connecting flange (4).

6. The explosion-proof regulating valve according to claim 1, characterized in that: The inner diameter of the chamber is set larger than the inner diameter of the positioning hole.

7. The explosion-proof regulating valve according to claim 1, characterized in that: A retreat space for the positioning block (9) to be fully retracted is provided between the positioning block (9) and the positioning groove.

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