Shock-resistant SCR (Selective Catalytic Reduction) material rake sealing device

Abstract

The utility model provides an anti-shock SCR material rake sealing device which comprises a fixing shell, a fixing hole is formed in the fixing shell, a material rake shaft is arranged in the fixing hole in a sleeved mode, the inner wall of the fixing hole is connected with the material rake shaft in a sealed mode through a sealing piece, supports are arranged at the two ends of the fixing shell in the axial direction, and the supports are connected with the fixing shell in a sleeved mode. The top and the bottom of the support are each provided with a supporting plate, the supporting plates are connected with connecting plates through elastic pieces in the radial direction of the fixing shell, and the two ends of the fixing shell are each provided with a fixing flange which is arranged on the material rake shaft in a sleeving mode and connected with the corresponding fixing hole in a sealed mode. According to the sealing device, when the elastic piece and the connecting plate are arranged and the two sides of the sealing device vibrate, the connecting plate vibrates, so that the elastic piece is driven to vibrate, vibration is buffered through the elastic piece, and the shock resistance of the sealing device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing structures, in particular to a shock-resistant SCR material rake sealing device. Background Art

[0002] SCR is a process for removing nitrogen oxides from flue gas. The process of removing nitrogen oxides from combustion flue gas can prevent environmental pollution. One end of the SCR material rake extends into the denitrification equipment. The SCR material rake shaft is sealed by a sealing device to prevent gas leakage. When the denitrification equipment is working, the SCR material rake shaft vibrates due to the pipeline and equipment, which in turn drives the sealing device to vibrate. Under the effect of vibration for a long time, the sealing structure will deform and loosen, resulting in a reduction in the sealing effect between the sealing device and the SCR material rake shaft. Utility Model Content

[0003] The problem that the utility model aims to solve is the poor anti-vibration effect of the sealing device.

[0004] In order to solve the above technical problems, the utility model provides a seismic-resistant SCR material rake sealing device, including a fixed shell, a fixing hole is opened inside the fixed shell, a material rake shaft is sleeved in the fixing hole, the inner wall of the fixing hole is sealed and connected to the material rake shaft through a sealing member, the fixed shell is provided with brackets at both ends in the axial direction, the top and bottom of the bracket are respectively provided with support plates, the support plates are respectively connected to connecting plates in the radial direction of the fixed shell through elastic members, and the two ends of the fixed shell are respectively provided with fixing flanges sleeved with the material rake shaft and sealed and connected to the fixing hole, and the connecting plate extends to the front of the fixing flange away from one end of the elastic member.

[0005] Preferably, the sealing member is composed of high temperature cotton and graphite packing, the graphite packing is arranged at the bottom of the high temperature cotton, the top of the high temperature cotton abuts against the top of the inner wall of the fixing hole, and the bottom of the graphite packing abuts against the material rake shaft.

[0006] Preferably, the support plate is arranged in the middle of the top and bottom of the bracket, and the top and bottom of the bracket are respectively provided with fixing plates slidably connected to the elastic member at positions symmetrical to the support plate.

[0007] Preferably, connecting columns are respectively formed at the four corners of the connecting plate, and one end of the connecting column away from the connecting plate is mounted on the elastic member.

[0008] Preferably, a fixing rod is movably installed inside the connecting plate, and one end of the fixing rod close to the fixing shell is provided with a plug engaged with the connecting plate, and the other end of the fixing rod passes through the connecting plate for installation in cooperation with the installation surface.

[0009] Preferably, a clamping block is formed at one end of the fixing flange, and an end of the clamping block away from the fixing flange abuts against the sealing member and the inner wall of the fixing hole.

[0010] Preferably, an annular sealing block is formed on the surface of the compression block in its radial direction.

[0011] Preferably, one end of the annular sealing block is sealingly connected to the fixed shell.

[0012] Preferably, the connecting plate is arranged perpendicular to the elastic member.

[0013] Preferably, the elastic member is a high temperature and corrosion resistant spring.

[0014] Compared with the prior art, the utility model provides a shock-resistant SCR material rake sealing device, which has the following beneficial effects:

[0015] 1. The utility model provides an elastic member and a connecting plate, one end of the connecting plate is in contact with the mounting surface, and the end of the connecting plate away from the mounting surface is installed with the elastic member. When both sides of the sealing device vibrate, the connecting plate vibrates, thereby driving the elastic member to vibrate. The elastic member buffers the vibration and improves the anti-seismic ability of the sealing device. By providing a supporting plate and a fixing plate, the elastic member passes through the upper and lower parts of the fixing shell and is installed on the connecting plate. The elastic member is not connected to the fixing shell and installed. The vibration of the elastic member will not act on the fixing shell, so that the stability of the sealing device is improved, and the anti-seismic effect is improved. Compared with the existing sealing device, the utility model has better stability and anti-seismic ability. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a schematic diagram of the elastic member and the connecting plate structure of the utility model;

[0018] Figure 3 It is a cross-sectional view of the fixed shell structure of the utility model.

[0019] In the figure: 1. fixed shell; 2. fixed hole; 3. sealing element; 31. high temperature cotton; 32. graphite packing; 4. bracket; 5. support plate; 6. elastic element; 7. connecting plate; 8. fixed flange; 9. fixed plate; 10. connecting column; 11. fixed rod; 12. plug; 13. clamping block; 14. annular sealing block. DETAILED DESCRIPTION

[0020] The utility model relates to a shock-resistant SCR material rake sealing device, such as Figure 1-3As shown, it includes a fixed shell 1, a fixing hole 2 is opened inside the fixed shell 1, a material rake shaft is sleeved in the fixing hole 2, the inner wall of the fixing hole 2 is sealed and connected to the material rake shaft through a sealing member 3, brackets 4 are arranged at both ends of the fixed shell 1 in the axial direction, support plates 5 are arranged at the top and bottom of the bracket 4, and the support plates 5 are connected to connecting plates 7 in the radial direction of the fixed shell 1 through elastic members 6, and fixing flanges 8 are arranged at both ends of the fixed shell 1, which are sleeved with the material rake shaft and are sealed and connected to the fixing hole 2, and one end of the connecting plate 7 away from the elastic member 6 extends to the front of the fixing flange 8. By setting the fixed shell 1 and the fixing hole 2, the fixing hole 2 is opened in the fixed shell 1, and the material rake shaft is fixedly penetrated in the fixing hole 2. By setting a sealing member 3, the sealing member 3 and the surface of the material rake shaft are in contact, so that the material rake shaft is sealed and connected, thereby improving the sealing effect of the material rake shaft. By setting a bracket 4 and a support plate 5, the number of brackets 4 is two, which are respectively arranged at the two ends of the fixed shell 1 in the radial direction, and the support plates 5 are respectively arranged in the middle of the top and bottom of the bracket 4. By setting an elastic member 6 and a connecting plate 7, one end of the connecting plate 7 is in contact with the mounting surface, and the end of the connecting plate 7 away from the mounting surface is installed with the elastic member 6. When both sides of the sealing device vibrate, the connecting plate 7 vibrates, thereby driving the elastic member 6 to vibrate, and the vibration is buffered by the elastic member 6. By setting a fixing flange 8, the material rake shaft and the fixed shell 1 are fixed, and the fixing hole 2 is sealed at the same time.

[0021] In an embodiment of the utility model, the sealing member 3 is composed of high temperature cotton 31 and graphite packing 32. The graphite packing 32 is arranged at the bottom of the high temperature cotton 31. The top of the high temperature cotton 31 abuts against the top of the inner wall of the fixing hole 2. The bottom of the graphite packing 32 abuts against the material rake shaft. By arranging the high temperature cotton 31 and the graphite packing 32, the high temperature cotton 31 includes glass fiber thermal insulation cotton with high temperature resistance, so that the high temperature resistance effect of the sealing device is improved. The graphite packing 32 has the characteristics of wear resistance and corrosion resistance, which improves the wear resistance and corrosion resistance of the sealing member 3.

[0022] In an embodiment of the utility model, the support plate 5 is arranged at the middle of the top and bottom of the bracket 4, and the top and bottom of the bracket 4 are respectively provided with fixed plates 9 slidably connected to the elastic member 6 at positions symmetrical to the support plate 5. By setting the above structure, the elastic member 6 is installed through the upper and lower parts of the fixed shell 1 and the connecting plate 7, and the elastic member 6 is not connected to the fixed shell 1 and installed, and the vibration of the elastic member 6 will not act on the fixed shell 1, so that the stability of the sealing device is improved, and the seismic effect is improved at the same time. Compared with the existing sealing device, it has better stability and seismic resistance.

[0023] In an embodiment of the utility model, connecting columns 10 are respectively formed at the four corners of the connecting plate 7, and one end of the connecting column 10 away from the connecting plate 7 is installed with the elastic member 6. By providing the connecting column 10, the four corners of the connecting plate 7 are respectively connected to the elastic member 6 through the connecting column 10, thereby improving the stability of the connecting plate 7 and the elastic member 6.

[0024] In an embodiment of the utility model, a fixing rod 11 is movably installed inside the connecting plate 7, and one end of the fixing rod 11 close to the fixed shell 1 is provided with a plug 12 which is engaged with the connecting plate 7, and the other end of the fixing rod 11 passes through the connecting plate 7 for installation in cooperation with the mounting surface. By providing the fixing rod 11 and the plug 12, one end of the fixing rod 11 passes through the connecting plate 7 and is installed and fixed on the mounting surface, and can be installed by welding, screwing, etc. The plug 12 is engaged and connected with the connecting plate 7, so that the connecting plate 7 and the mounting surface are installed and fixed.

[0025] In an embodiment of the utility model, a clamping block 13 is formed at one end of the fixing flange 8, and the end of the clamping block 13 away from the fixing flange 8 abuts against the seal 3 and the inner wall of the fixing hole 2. By setting the clamping block 13, the clamping block 13 extends into the fixing hole 2, so that the clamping block 13 and the seal 3 and the inner wall of the fixing hole 2 abut against each other, thereby forming a multi-layer sealing structure, which improves the sealing effect of the seal 3 and the fixing hole 2.

[0026] In the embodiment of the utility model, an annular sealing block 14 is formed on the surface of the pressing block 13 in the radial direction. By providing the annular sealing block 14 , the annular sealing block 14 and the pressing block 13 form a multi-layer sealing structure.

[0027] In an embodiment of the utility model, one end of the annular sealing block 14 is sealed and connected to the fixed shell 1. By setting the above structure, the end of the fixed shell 1 and the annular sealing block 14 are sealed and connected, so that the end of the fixed shell 1 forms a multi-layer sealing structure, thereby improving the sealing effect of the fixed shell 1.

[0028] In an embodiment of the utility model, the connecting plate 7 is arranged perpendicular to the elastic member 6. By setting the above structure, when one side of the connecting plate 7 vibrates, the vibration is transmitted to the elastic member 6 in the vertical direction through the connecting plate 7, and the connecting plate 7 and the elastic member 6 are subjected to more uniform force, thereby improving the stability of the sealing device.

[0029] In the embodiment of the utility model, the elastic member 6 is a high temperature resistant and corrosion resistant spring. Since the internal temperature of the SCR denitration equipment is relatively high and corrosive, the high temperature resistant and corrosion resistant spring can meet the use requirements.

[0030] When in use, first, install the sealing device on the material rake shaft, and insert the material rake shaft into the fixing hole 2 and the fixing flange 8, and then install one end of the fixing rod 11 and the mounting surface by welding or screwing, ensure that the plug 12 and the connecting plate 7 are engaged and connected, and then insert the clamping block 13 into the fixing hole 2, so that the clamping block 13 extends into the fixing hole 2, and ensure that the clamping block 13 and the inner wall of the fixing hole 2 and the sealing member 3 are sealed and connected, and the annular sealing block 14 is also abutted against the end of the fixing shell 1, and then fixed by the bolts on the fixing flange 8 and the mounting surface. When the two sides of the sealing device vibrate, the connecting plate 7 will be driven to vibrate, and the vibration will be transmitted to the elastic member 6 through the connecting plate 7. The elastic member 6 vibrates between the support plate 5 and the connecting plate 7, and the elastic member 6 slides and retracts back and forth in the fixing plate 9, and the vibration is buffered by the elastic member 6.

[0031] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A shock-resistant SCR material rake sealing device, comprising a fixed shell (1), characterized in that: A fixing hole (2) is provided inside the fixing shell (1), a material rake shaft is sleeved in the fixing hole (2), the inner wall of the fixing hole (2) is sealedly connected to the material rake shaft via a sealing member (3), brackets (4) are provided at both ends of the fixing shell (1) in the axial direction, support plates (5) are provided at the top and bottom of the bracket (4), the support plates (5) are connected to connecting plates (7) in the radial direction of the fixing shell (1) via elastic members (6), and fixing flanges (8) sleeved with the material rake shaft and sealedly connected to the fixing hole (2) are provided at both ends of the fixing shell (1), and one end of the connecting plate (7) away from the elastic member (6) extends to the front of the fixing flange (8).

2. The anti-vibration SCR material rake sealing device according to claim 1, characterized in that: The sealing member (3) is composed of high-temperature cotton (31) and graphite packing (32). The graphite packing (32) is arranged at the bottom of the high-temperature cotton (31). The top of the high-temperature cotton (31) abuts against the top of the inner wall of the fixing hole (2), and the bottom of the graphite packing (32) abuts against the material rake shaft.

3. The anti-vibration SCR material rake sealing device according to claim 2, characterized in that: The support plate (5) is arranged in the middle of the top and bottom of the bracket (4), and fixed plates (9) slidably connected to the elastic member (6) are respectively arranged at positions symmetrical to the top and bottom of the bracket (4) with respect to the support plate (5).

4. The anti-vibration SCR material rake sealing device according to claim 3, characterized in that: The four corners of the connecting plate (7) are respectively formed with connecting columns (10), and one end of the connecting column (10) away from the connecting plate (7) is mounted on the elastic member (6).

5. The anti-vibration SCR material rake sealing device according to claim 4, characterized in that: A fixing rod (11) is movably installed inside the connecting plate (7); one end of the fixing rod (11) close to the fixing shell (1) is provided with a plug (12) which is snap-connected with the connecting plate (7); the other end of the fixing rod (11) passes through the connecting plate (7) for being installed in coordination with the installation surface.

6. The anti-vibration SCR material rake sealing device according to claim 5, characterized in that: A clamping block (13) is formed at one end of the fixing flange (8), and an end of the clamping block (13) away from the fixing flange (8) abuts against the sealing member (3) and the inner wall of the fixing hole (2).

7. The anti-vibration SCR material rake sealing device according to claim 6, characterized in that: An annular sealing block (14) is formed on the surface of the pressing block (13) in the radial direction thereof.

8. The anti-vibration SCR material rake sealing device according to claim 7, characterized in that: One end of the annular sealing block (14) is sealedly connected to the fixed shell (1).

9. A seismic-resistant SCR material rake sealing device according to any one of claims 1 to 8, characterized in that: The connecting plate (7) is arranged perpendicular to the elastic member (6).

10. A seismic-resistant SCR material rake sealing device according to any one of claims 1 to 8, characterized in that: The elastic member (6) is a high temperature resistant and corrosion resistant spring.

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