Off-line poppet valve elevated assembly structure

Abstract

The utility model relates to an off-line poppet valve elevated assembly structure, which comprises an off-line poppet valve body and a sealing valve plate, and is characterized in that the off-line poppet valve body is additionally provided with an elevating support on a box body mounting surface of a dust remover, the box body mounting surface is provided with a mounting port, and the upper end of the mounting port is provided with a horizontal fixing plate; the lower end of the lifting support is fixedly connected with the horizontal fixing plate, an asbestos rubber plate is fixed to the upper end of the lifting support, a front flange of the off-line lifting valve body is fixedly connected with the upper surface of the asbestos rubber plate, and the lower end of a telescopic rod of the off-line lifting valve body penetrates through the asbestos rubber plate and is connected with an extension rod. The lower end of the lengthening rod penetrates through the horizontal fixing plate and an installation opening in the installation face of the box body and then is fixedly connected with the sealing valve plate, and the horizontal fixing plate is provided with an avoiding through hole corresponding to the lengthening rod and a sealing flange set. The structure has the advantages of being resistant to high temperature, prolonging the overhaul and maintenance period and being convenient to overhaul and maintain under the non-stop condition.

Description

TECHNICAL FIELD

[0001] The utility model relates to bag type dust collector smoke box separation device technical field, specifically relates to a kind of offline poppet high-level assembly structure, which can be widely used in high smoke temperature dust removal working condition. BACKGROUND

[0002] The offline poppet is an important device for separating the bag type dust collector smoke box, which relies on compressed air as a power source and cuts off the flue gas passage by pushing the piston to move. When the offline poppet is opened, the clean flue of the upper box is connected with the middle box, and this working state is the normal working state of the dust collector. When a chamber of the dust collector is closed, the offline state is realized. At this time, the pulse valve starts to work and sprays high-pressure gas into the offline dust collection chamber to blow and clean the filter bag. After cleaning, the air inlet of the offline poppet is connected with the atmosphere, the valve rod extends downward under the action of gravity and the reset spring, the valve plate descends vertically, and the flue passage is closed again. The dust collection chamber resumes normal filtering work.

[0003] Since the valve plate is lifted vertically, the flue passage can be quickly cut off, the dust collection chamber can be made offline in a short time, and the re-adsorption of dust during cleaning is reduced. It is widely used in heating, chemical industry and steel industry. In the dust removal system of the chemical industry, the sealing performance of the offline valve group can ensure that the dust containing corrosive gas is effectively captured, avoiding pollution to the environment.

[0004] However, when the working temperature is high, the structure of the existing offline poppet group cannot meet the working condition requirements. Referring to Figure 3 , the existing offline poppet structure mainly consists of an offline poppet, a poppet base, a locking nut, a sealing valve plate, a valve plate stopper, etc. During use, the sealing valve plate falls under the drive of the offline poppet and is attached to the sealing valve plate stopper. The sealing valve plate and the valve plate stopper cooperate to form a closed box chamber. However, there are the following problems: 1. During equipment operation, the box is filled with high-temperature flue gas and toxic and harmful gas. Disassembly of the offline poppet must enter the box chamber to remove the locking nut, which has great safety hazards. The downtime is often very short, greatly increasing the difficulty of maintenance; 2. When installing the offline poppet, asbestos rubber plates are used for sealing, but the telescopic part of the offline poppet rod is directly in contact with the flue gas inside the dust collector, which can easily cause dust to enter the cylinder body and damage the equipment, and the maintenance cycle is short. UTILITY MODEL CONTENTS

[0005] The utility model discloses a structure more reasonable, use more reliable offline poppet valve overhead assembly structure of solving above -mentioned problem has high temperature resistance, prolongs the maintenance period, and the advantage that maintenance is convenient, even in the case of not stopping, can also dismantle, repair and replace offline poppet valve, improved operating safety, lengthened the service life of equipment simultaneously.

[0006] The utility model discloses a technical scheme is:

[0007] A kind of offline poppet valve overhead assembly structure, including offline poppet valve body and sealing valve plate, its technical key points are: the offline poppet valve body is additionally provided with lifting support at the box mounting surface of dust catcher, the box mounting surface is equipped with installation port and installation port upper end is equipped with horizontal fixed plate, the lower end of the lifting support is connected and fixed with horizontal fixed plate, the upper end of the lifting support is fixed with asbestos rubber plate, the front flange of the offline poppet valve body is connected and fixed with the upper surface of asbestos rubber plate, the lower end of the telescopic rod of the offline poppet valve body passes through asbestos rubber plate and is connected with lengthening rod, the lower end of the lengthening rod passes through horizontal fixed plate and the installation port on the box mounting surface and is connected and fixed with sealing valve plate, the horizontal fixed plate is equipped with the avoiding through hole and sealing flange group corresponding lengthening rod, the sealing flange group includes annular packing box concentric with avoiding through hole, annular sealing packing clamped between the inner wall of annular packing box and the outer wall of lengthening rod, annular packing cover provided above annular packing box, the lower surface of annular packing cover is equipped with annular boss inserted into the inside of annular packing box and extruded annular sealing packing, the upper surface of annular packing cover is uniformly equipped with a plurality of upper installation holes, the upper installation hole is equipped with positioning bolt, the annular packing box is equipped with lower installation hole corresponding with upper installation hole one by one, the tip of positioning bolt passes through upper installation hole and is screwed in lower installation hole.

[0008] The offline poppet valve overhead assembly structure described above, the horizontal fixed plate is asbestos rubber plate.

[0009] The offline poppet valve overhead assembly structure described above, the lifting support is composed of multiple struts evenly arranged around the center line of lengthening rod.

[0010] The offline poppet valve overhead assembly structure described above, a connecting sleeve is arranged between the upper end of lengthening rod and the lower end of telescopic rod, and the connecting sleeve is threadedly connected with lengthening rod and telescopic rod.

[0011] The utility model discloses the beneficial effect is:

[0012] 1、as Figure 1 Indicated, in Figure 3The off-line poppet valve body is connected with the sealing valve plate through the added lengthened rod, and the front flange of the off-line poppet valve body is separated from the installation surface of the box of the dust collector, which avoids the direct contact of the flue gas with the telescopic rod of the off-line poppet valve body, and provides a maintenance space for the maintenance and repair of the off-line poppet valve body, and facilitates the disassembly and maintenance of the equipment.

[0013] 2、The installation height of the off-line poppet valve body is increased, and the heat conduction of the off-line poppet valve body to the high-temperature flue gas is reduced, and the off-line poppet valve body is cooled by natural wind.

[0014] 3、In order to increase the sealing property of the equipment, the sealing flange group is arranged at the installation port of the off-line poppet valve body. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the utility model;

[0016] Figure 2 is Figure 1 a structural schematic view of the sealing flange group and the periphery;

[0017] Figure 3 is a structural schematic view of the prior art.

[0018] In the drawing: 1. off-line poppet valve body, 2. connecting sleeve, 3. lifting support, 4. lengthened rod, 5. sealing flange group, 501. positioning bolt, 502. annular packing cover, 503. annular packing box, 504. annular sealing packing, 6. locking nut group, 7. sealing valve plate, 8. valve seat, 9. asbestos rubber plate, 10. horizontal fixing plate, 11. box, 12. installation port. DETAILED DESCRIPTION

[0019] The utility model is described in detail in combination with the drawings.

[0020] As Figure 1 , Figure 2 shown, the off-line poppet valve elevated assembly structure comprises an off-line poppet valve body 1 and a sealing valve plate 7.

[0021] The off-line poppet valve body 1 is additionally provided with a lifting support 3 at a box 11 mounting surface of a dust collector, the box 11 mounting surface is provided with a mounting hole 12, the upper end of the mounting hole 12 is provided with a horizontal fixing plate 10, the lower end of the lifting support 3 is connected and fixed with the horizontal fixing plate 10, the upper end of the lifting support 3 is fixed with an asbestos rubber plate 9, and the front flange of the off-line poppet valve body 1 is connected and fixed with the upper surface of the asbestos rubber plate 9.

[0022] The lower end of the telescopic rod of the off-line poppet valve body 1 passes through the asbestos rubber plate 9 and is connected with an extension rod 4, the lower end of the extension rod 4 passes through the horizontal fixing plate 10 and the mounting hole 12 on the box 11 mounting surface and is connected and fixed with a sealing valve plate 7 by using a locking nut set 6.

[0023] The horizontal fixing plate 10 is provided with an avoiding through hole corresponding to the extension rod 4 and a sealing flange set 5. The sealing flange set 5 comprises a ring-shaped packing box 503 concentric with the avoiding through hole, a ring-shaped sealing packing 504 clamped between the inner circumferential surface of the ring-shaped packing box 503 and the outer wall of the extension rod 4, and a ring-shaped packing cover 502 arranged above the ring-shaped packing box 503. The lower surface of the ring-shaped packing cover 502 is provided with a ring-shaped boss inserted into the inner side of the ring-shaped packing box 503 and extruding the ring-shaped sealing packing 504, the upper surface of the ring-shaped packing cover 502 is uniformly provided with a plurality of upper mounting holes, the upper mounting holes are provided with positioning bolts 501, the ring-shaped packing box 503 is provided with lower mounting holes corresponding to the upper mounting holes, and the tips of the positioning bolts 501 pass through the upper mounting holes and are screwed into the lower mounting holes.

[0024] In the embodiment, the horizontal fixing plate 10 is an asbestos rubber plate. The lifting support 3 is composed of a plurality of support columns uniformly arranged around the center line of the extension rod 4. A connecting sleeve 2 is arranged between the upper end of the extension rod 4 and the lower end of the telescopic rod, and the connecting sleeve 2 is threadedly connected and fixed with the extension rod 4 and the telescopic rod, facilitating assembly and disassembly.

[0025] During operation, the lifting support 3 increases the installation height of the off-line poppet valve body 1, the extension rod 4 avoids the telescopic rod of the off-line poppet valve body 1 from contacting flue gas, and the sealing flange set 5 avoids flue gas leakage, so that the off-line poppet valve body 1 is far away from the high-temperature environment and the damage of substances in the flue gas.

[0026] After the off-line poppet valve body 1 is started, the extension rod 4 is pushed to move downward, so that the sealing valve plate 7 is attached to the upper end of a valve seat 8 in the box 11, thereby achieving the function of closing the air flow channel.

[0027] The above embodiment of the utility model is described in detail, but the content is only the preferred embodiment of the utility model and cannot be considered as limiting the scope of the utility model. Any equivalent change and improvement within the scope of the utility model is still within the scope of the patent.

Claims

1. An off-line poppet valve overhead assembly structure comprising an off-line poppet valve body and a sealing valve plate, characterized by: The offline poppet valve body is additionally provided with a lifting support at a box mounting surface of a dust collector, the box mounting surface is provided with a mounting port, the upper end of the mounting port is provided with a horizontal fixing plate, the lower end of the lifting support is connected and fixed with the horizontal fixing plate, the upper end of the lifting support is fixed with an asbestos rubber plate, the front flange of the offline poppet valve body is connected and fixed with the upper surface of the asbestos rubber plate, the lower end of the telescopic rod of the offline poppet valve body penetrates through the asbestos rubber plate and is connected with an extended rod, the lower end of the extended rod is connected and fixed with a sealing valve plate after penetrating through the horizontal fixing plate and the mounting port on the box mounting surface, the horizontal fixing plate is provided with an avoiding through hole corresponding to the extended rod and a sealing flange group, the sealing flange group comprises an annular packing box concentric with the avoiding through hole, an annular sealing packing clamped between the inner circumferential surface of the annular packing box and the outer wall of the extended rod, an annular packing cover arranged above the annular packing box, the lower surface of the annular packing cover is provided with an annular boss inserted into the inner side of the annular packing box and extruding the annular sealing packing, the upper surface of the annular packing cover is uniformly provided with a plurality of upper mounting holes, the upper mounting holes are provided with positioning bolts, the annular packing box is provided with lower mounting holes corresponding to the upper mounting holes one by one, and the tips of the positioning bolts penetrate through the upper mounting holes and are screwed into the lower mounting holes.

2. The off-line poppet valve gantry assembly structure according to claim 1, characterized by: The horizontal fixing plate is an asbestos rubber plate.

3. The off-line poppet valve gantry assembly structure according to claim 1, characterized by: The lifting support is composed of a plurality of support columns uniformly arranged around the center line of the extended rod.

4. The off-line poppet valve gantry assembly structure according to claim 1, characterized by: A connecting sleeve is arranged between the upper end of the extended rod and the lower end of the telescopic rod, and the connecting sleeve is threadedly connected and fixed with the extended rod and the telescopic rod.

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