Sheet type silencing device for blast furnace gas pressure reducing valve

Abstract

The utility model relates to the technical field of silencing of blast furnace gas pressure reducing valves, in particular to a sheet type silencing device for a blast furnace gas pressure reducing valve, which is characterized in that a threaded pipe is sleeved at one end of a pressure reducing valve main body, a positioning nut is screwed on the surface of the threaded pipe, a bearing is arranged on the side surface of the positioning nut, and a positioning rod is arranged at the bottom of a fixed plate; a base is arranged on the surface of the sheet type silencer, a positioning groove is formed in the surface of the base, a protection plate is arranged at the bottom of the fixing plate, and sound insulation cotton is arranged on the inner side face of the protection plate. The plate type silencer has the beneficial effects that one end of the plate type silencer is inserted into the connecting end of the pressure reducing valve body to be fixed, then the plate type silencer is fixed in cooperation with the positioning rod, the problem that the plate type silencer deviates and shakes is avoided, and air vibration at the connecting position of the pressure reducing valve body and the plate type silencer is prevented; the protection plate is arranged at the bottom of the fixing plate to cover and seal the joint of the sheet type silencer and the pressure reducing valve body, and sound insulation cotton is arranged on the inner surface of the protection plate, so that the noise reduction effect can be improved.

Description

Technical Field

[0001] The utility model relates to the field of blast furnace gas pressure reducing valve silencer, in particular to a sheet type silencer for a blast furnace gas pressure reducing valve. Background Art

[0002] The pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure through regulation, and automatically maintains a stable outlet pressure by relying on the energy of the medium itself. From the perspective of fluid mechanics, the pressure reducing valve is a throttling element with variable local resistance, that is, by changing the throttling area, the flow rate and the kinetic energy of the fluid are changed, resulting in different pressure losses, thereby achieving the purpose of pressure reduction.

[0003] In the prior art, during the operation of a blast furnace, it is necessary to inject gas into the interior for combustion and heating, and a pressure reducing valve is used to control the gas injection pressure. The plate-type silencer installed on the surface of the pressure reducing valve can weaken the air vibration during gas discharge.

[0004] However, the existing connection method between the pressure reducing valve body and the plate-type silencer is relatively simple. The connection between the pressure reducing valve body and the plate-type silencer will be affected by air vibration to transmit noise, affecting the overall noise reduction effect of the silencer. For this reason, the utility model proposes a plate-type silencer device for a blast furnace gas pressure reducing valve to solve the above-mentioned technical problems. Utility Model Content

[0005] The utility model aims to provide a plate-type silencer for a blast furnace gas pressure reducing valve to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a plate-type silencer for a blast furnace gas pressure reducing valve, the plate-type silencer for a blast furnace gas pressure reducing valve comprising: a pressure reducing valve body, one end of the pressure reducing valve body is sleeved with a threaded tube, a positioning nut is threadedly connected to the surface of the threaded tube, a bearing is arranged on the side of the positioning nut, a bottom plate is arranged on the surface of the bearing, a fixing plate is arranged above the bottom plate, and a positioning rod is arranged at the bottom of the fixing plate;

[0007] A sheet-type silencer is provided with a base on the surface of the sheet-type silencer, a positioning groove is provided on the surface of the base, a protective plate is provided at the bottom of the fixing plate, and sound insulation cotton is provided on the inner side of the protective plate.

[0008] Preferably, the threaded tube is fixedly connected to the surface of the pressure reducing valve body, the threaded tube is an external thread, and the positioning nut can be threadedly rotated on the threaded tube.

[0009] Preferably, the base plate is fixedly connected to the outer ring surface of the bearing, a vertical rod is arranged on the surface of the base plate, a spring is sleeved on the surface of the vertical rod, one end of the fixed plate is sleeved on the vertical rod, and the fixed plate can move up and down along the vertical rod.

[0010] Preferably, one end of the spring is fixedly connected to the surface of the vertical pole, and the other end of the spring is fixedly connected to the surface of the fixed plate. Two groups of fixed plates are provided, and the two groups of fixed plates are symmetrically distributed up and down about the pressure reducing valve body.

[0011] Preferably, a fixing groove is provided at one end of the pressure reducing valve body, a sealing gasket is arranged in the fixing groove, and one end of the plate-type silencer can be inserted into the fixing groove.

[0012] Preferably, the protective plate is fixedly connected to the surface of the fixing plate, and the protective plate is an arc-shaped plate structure. The protective plate can seal the connection between the plate-type silencer and the pressure reducing valve body.

[0013] Preferably, the base is fixedly connected to the surface of the plate-type silencer, and one end of the positioning rod can be inserted into the positioning groove.

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

[0015] The utility model discloses a disc type silencer device for a blast furnace gas pressure reducing valve. When in use, first one end of the disc type silencer is inserted into the connecting end of the pressure reducing valve body to fix it. Then, the disc type silencer is fixed in cooperation with the positioning rod to avoid the problem of displacement and shaking of the disc type silencer, and to prevent air vibration from occurring at the connection between the pressure reducing valve body and the disc type silencer. A protective plate is arranged at the bottom of the fixing plate to cover and seal the connection between the disc type silencer and the pressure reducing valve body. Sound insulation cotton is arranged on the inner surface of the protective plate to improve the noise reduction effect. In this way, the existing pressure reducing valve body and the disc type silencer are relatively single in connection mode. The connection between the pressure reducing valve body and the disc type silencer will be affected by air vibration to transmit noise, thereby affecting the overall noise reduction effect of the silencer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the pressure reducing valve of the utility model;

[0018] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 This is a side view of the main body of the structural pressure reducing valve of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the sheet-type silencer of the utility model.

[0021] In the figure: 1. Pressure reducing valve body; 2. Threaded pipe; 3. Positioning nut; 4. Bearing; 5. Bottom plate; 6. Fixing plate; 7. Positioning rod; 8. Plate silencer; 9. Base; 10. Positioning groove; 11. Protective plate;

[0022] 12. Sound insulation cotton; 13. Vertical pole; 14. Spring; 15. Fixing groove; 16. Sealing gasket. DETAILED DESCRIPTION

[0023] 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.

[0024] Embodiment 1

[0025] See also Figure 1-Figure 5 The utility model provides a technical solution: a plate-type silencer for a blast furnace gas pressure reducing valve, the plate-type silencer for a blast furnace gas pressure reducing valve comprising: a pressure reducing valve body 1, a threaded tube 2 is sleeved on one end of the pressure reducing valve body 1, a positioning nut 3 is screwed on the surface of the threaded tube 2, a bearing 4 is arranged on the side of the positioning nut 3, a bottom plate 5 is arranged on the surface of the bearing 4, a fixing plate 6 is arranged above the bottom plate 5, and a positioning rod 7 is arranged at the bottom of the fixing plate 6; a plate-type silencer 8, a base 9 is arranged on the surface of the plate-type silencer 8, a positioning groove 10 is opened on the surface of the base 9, a protective plate 11 is arranged at the bottom of the fixing plate 6, and a sound insulation cotton 12 is arranged on the inner side of the protective plate 11;

[0026] When in use, first insert one end of the plate-type silencer 8 into the connecting end of the pressure reducing valve body 1 to fix it, and then fix the plate-type silencer 8 with the positioning rod 7 to avoid the problem of displacement and shaking of the plate-type silencer 8, and prevent air vibration from occurring at the connection between the pressure reducing valve body 1 and the plate-type silencer 8. A protective plate 11 is provided at the bottom of the fixing plate 6 to cover and seal the connection between the plate-type silencer 8 and the pressure reducing valve body 1, and sound insulation cotton 12 is provided on the inner surface of the protective plate 11 to improve the noise reduction effect.

[0027] Embodiment 2

[0028] On the basis of the first embodiment, in order to facilitate the installation of the disc silencer 8, a positioning rod 7 is provided, the bottom plate 5 is fixedly connected to the outer ring surface of the bearing 4, a vertical rod 13 is provided on the surface of the bottom plate 5, a spring 14 is sleeved on the surface of the vertical rod 13, one end of the fixed plate 6 is sleeved on the vertical rod 13, and the fixed plate 6 can move up and down along the vertical rod 13, one end of the spring 14 is fixedly connected to the surface of the vertical rod 13, and the other end of the spring 14 is fixedly connected to the surface of the fixed plate 6, and the fixed plate 6 is provided with two groups, and the two groups of fixed plates 6 are symmetrically distributed about the pressure reducing valve body 1, and a fixing groove 15 is opened at one end of the pressure reducing valve body 1, and a sealing gasket 16 is arranged in the fixing groove 15, and one end of the disc silencer 8 can be inserted into the fixing groove 15;

[0029] When in use, first pull the fixing plate 6 upwards, then insert one end of the disc silencer 8 into the fixing groove 15, then loosen the fixing plate 6 and use the elastic force of the spring 14 to reset the fixing plate 6, so that one end of the positioning rod 7 can be inserted into the positioning groove 10, and the disc silencer 8 can be fixed on the pressure reducing valve body 1. The positioning rod 7 is fixed to prevent one end of the disc silencer 8 from escaping from the positioning groove 10 to reduce the problem of air vibration.

[0030] Embodiment 3

[0031] On the basis of the second embodiment, in order to improve the noise reduction effect of the disc muffler 8, a protective plate 11 is provided, the threaded pipe 2 is fixedly connected to the surface of the pressure reducing valve body 1, the threaded pipe 2 is an external thread, the positioning nut 3 can be threadedly rotated on the threaded pipe 2, the protective plate 11 is fixedly connected to the surface of the fixed plate 6, the protective plate 11 is an arc-shaped plate structure, the protective plate 11 can seal the connection between the disc muffler 8 and the pressure reducing valve body 1, the base 9 is fixedly connected to the surface of the disc muffler 8, and one end of the positioning rod 7 can be inserted into the positioning groove 10;

[0032] First, the connection between the disc muffler 8 and the pressure reducing valve body 1 can be sealed by the protective plate 11 arranged at the bottom of the fixing plate 6. The sound insulation cotton 12 arranged on the inner surface of the protective plate 11 can reduce the noise at the connection between the disc muffler 8 and the pressure reducing valve body 1. The displacement of the positioning nut 3 on the threaded tube 2 can squeeze the sealing gasket 16 at one end of the disc muffler 8 to improve the sealing effect. The setting of the bearing 4 can avoid the problem that the fixing plate 6 also rotates when the positioning nut 3 is rotated.

[0033] In actual use, first insert one end of the plate-type silencer 8 into the connecting end of the pressure reducing valve body 1 to fix it, and then fix the plate-type silencer 8 with the positioning rod 7 to avoid the problem of displacement and shaking of the plate-type silencer 8, and prevent air vibration from occurring at the connection between the pressure reducing valve body 1 and the plate-type silencer 8. A protective plate 11 is provided at the bottom of the fixing plate 6 to cover and seal the connection between the plate-type silencer 8 and the pressure reducing valve body 1. Sound insulation cotton 12 is provided on the inner surface of the protective plate 11 to improve the noise reduction effect. This avoids the problem that the existing pressure reducing valve body 1 and the plate-type silencer 8 are relatively single in connection mode, and the connection between the pressure reducing valve body 1 and the plate-type silencer 8 will be affected by air vibration to transmit noise, thereby affecting the overall noise reduction effect of the silencer.

[0034] 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 sheet-type silencer for a blast furnace gas pressure reducing valve, characterized in that: The sheet-type silencer for a blast furnace gas pressure reducing valve comprises: a pressure reducing valve body (1), one end of the pressure reducing valve body (1) is sleeved with a threaded tube (2), a positioning nut (3) is threadedly connected to the surface of the threaded tube (2), a bearing (4) is arranged on the side of the positioning nut (3), a bottom plate (5) is arranged on the surface of the bearing (4), a fixing plate (6) is arranged above the bottom plate (5), and a positioning rod (7) is arranged at the bottom of the fixing plate (6); The plate-type silencer (8) is provided with a base (9) on its surface, a positioning groove (10) is provided on the surface of the base (9), a protective plate (11) is provided at the bottom of the fixing plate (6), and sound insulation cotton (12) is provided on the inner side of the protective plate (11).

2. The sheet-type silencer for a blast furnace gas pressure reducing valve according to claim 1, characterized in that: The threaded pipe (2) is fixedly connected to the surface of the pressure reducing valve body (1); the threaded pipe (2) is an external thread; and the positioning nut (3) can be threadedly rotated on the threaded pipe (2).

3. The sheet-type silencer for a blast furnace gas pressure reducing valve according to claim 1, characterized in that: The bottom plate (5) is fixedly connected to the outer ring surface of the bearing (4); a vertical rod (13) is arranged on the surface of the bottom plate (5); a spring (14) is sleeved on the surface of the vertical rod (13); one end of the fixed plate (6) is sleeved on the vertical rod (13); and the fixed plate (6) can move up and down along the vertical rod (13).

4. The sheet-type silencer for a blast furnace gas pressure reducing valve according to claim 3, characterized in that: One end of the spring (14) is fixedly connected to the surface of the vertical rod (13), and the other end of the spring (14) is fixedly connected to the surface of the fixed plate (6). The fixed plates (6) are provided in two groups, and the two groups of fixed plates (6) are symmetrically distributed up and down with respect to the pressure reducing valve body (1).

5. The sheet-type silencer for a blast furnace gas pressure reducing valve according to claim 1, characterized in that: A fixing groove (15) is provided at one end of the pressure reducing valve body (1), a sealing gasket (16) is arranged in the fixing groove (15), and one end of the plate-type silencer (8) can be inserted into the fixing groove (15).

6. The sheet-type silencer for a blast furnace gas pressure reducing valve according to claim 1, characterized in that: The protective plate (11) is fixedly connected to the surface of the fixed plate (6). The protective plate (11) is an arc-shaped plate structure. The protective plate (11) can seal the connection between the plate-type silencer (8) and the pressure reducing valve body (1).

7. The sheet-type silencer for a blast furnace gas pressure reducing valve according to claim 1, characterized in that: The base (9) is fixedly connected to the surface of the plate-type silencer (8), and one end of the positioning rod (7) can be inserted into the positioning groove (10).

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