Lift valve for heat accumulating type oxidizing furnace

Abstract

The utility model discloses a lift valve for a heat accumulating type oxidizing furnace, which relates to the technical field of lift valves and comprises a plurality of airflow conveying pipes, a lift valve mechanism is arranged between every two adjacent airflow conveying pipes, and each lift valve mechanism comprises a switching control pipe. The left side and the right side of the switching control pipe are fixedly connected with the opposite faces of the two adjacent airflow conveying pipes respectively, the rear side of the switching control pipe is fixedly connected with an oxidation furnace connecting pipe penetrating through an inner cavity of the switching control pipe, the rear end of the oxidation furnace connecting pipe is fixedly connected with an oxidation furnace, and a lifting control valve mechanism is arranged on the front side of the switching control pipe. The internal thread mounting ring, the lifting control valve mechanism, the sealing mechanism, the oxidation furnace connecting pipe and the butterfly valve are matched with one another, so that the whole lifting control valve mechanism can be quickly disassembled and assembled, the maintenance efficiency is improved, meanwhile, sealing treatment can be utilized after disassembly, normal passing of airflow through a switching control pipe is not affected, and finally the production efficiency is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of poppet valve, specifically relates to a poppet valve for regenerative oxidizing furnace. BACKGROUND

[0002] The regenerative oxidizing furnace is also called RTO, and it is an environmental protection equipment for efficiently treating industrial volatile organic compounds and harmful gas, and its core principle is that pollutants in waste gas are oxidized and decomposed into carbon dioxide and water through high temperature, and heat is recovered by using ceramic heat storage body, energy consumption is significantly reduced, RTO is usually equipped with multiple combustion chambers filled with ceramic heat storage body, waste gas enters a heat storage chamber first, and the ceramic body absorbs heat in the waste gas and preheats the gas, the preheated gas enters the combustion chamber and is oxidized and decomposed at high temperature, and the purified high-temperature gas enters another heat storage chamber, heat is transferred to the ceramic body, and the high-temperature gas is cooled and discharged, by periodically switching the airflow direction, the ceramic body alternately absorbs heat and releases heat, and the heat recovery efficiency is as high as more than 95%, and the poppet valve is a core component for controlling the airflow direction in the RTO system, the RTO needs to periodically switch the waste gas inlet and the purified gas outlet, and the switching is usually performed once every 1-10 minutes to ensure continuous heat absorption and heat release of the heat storage body, the poppet valve precisely guides the airflow into different heat storage chambers by rapid opening and closing, and maintains efficient operation of the system.

[0003] Because the existing poppet valve and the RTO furnace are designed in an integrated manner, the poppet valve needs to be stopped and operated during each maintenance, and the maintenance speed is slow, thereby affecting the production continuity and causing the production efficiency to be reduced, and the valve plate and the valve seat of the existing poppet valve are prone to sealing failure due to wear or high-temperature deformation, and the sealing surface also has a gap when the valve rod rotates, and the sealing property of the overall poppet valve cannot be guaranteed after long-term use. UTILITY MODEL CONTENTS

[0004] The utility model provides a poppet valve for regenerative oxidizing furnace to solve the problems in the above background technology.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of:

[0006] The utility model discloses a kind of lifting valves for regenerative oxidizing furnace, including several airflow delivery pipes, lifting valve mechanism is provided between adjacent two of several airflow delivery pipes, the lifting valve mechanism includes switching control pipe, the left and right sides of the switching control pipe are respectively fixedly connected with the opposite surface of adjacent two airflow delivery pipes, the rear side of the switching control pipe is fixedly connected with the oxidizing furnace connecting pipe through its inner cavity, the rear end of the oxidizing furnace connecting pipe is fixedly connected with oxidizing furnace, the front side of the switching control pipe is provided with lifting control valve mechanism, the top of the switching control pipe is provided with sealing mechanism, the front side of the switching control pipe is fixedly connected with the inner thread mounting ring through its inner cavity, the lifting control valve mechanism includes external thread plug, the outer wall front side of the external thread plug is fixedly installed limit ring one, the outer wall of the external thread plug is threadedly connected with the inner ring of inner thread mounting ring, the outer wall of the external thread plug is sleeved with rubber ring, the rubber ring is located at the rear side of limit ring one, the rear side of the rubber ring is overlapped with the front side of inner thread mounting ring, the front end left and right sides of the external thread plug are both fixedly installed L type rotary handle one, the front end lower side of the external thread plug is fixedly installed with mounting bracket, the top of the mounting bracket is fixedly installed with electric lifting push rod.

[0007] Further improvement in the technical scheme of the utility model lies in: the output shaft of the electric lifting push rod is fixedly installed with threaded rod after penetrating to the rear side of the external thread plug, the outer wall of the threaded rod is threadedly installed with threaded ring, the rear side of the threaded ring is fixedly installed with sealing valve plate, the diameter of the sealing valve plate is less than the inner ring diameter of the inner thread mounting ring.

[0008] Further improvement in the technical scheme of the utility model lies in: the sealing mechanism includes anti-lost threaded ring, the anti-lost threaded ring is fixedly installed on the top of the switching control pipe, the inner ring of the anti-lost threaded ring is threadedly installed with sealing threaded plug, the outer wall of the sealing threaded plug is fixedly installed with limit ring two above, the bottom of the limit ring two is overlapped with the top of the anti-lost threaded ring, the top left and right sides of the sealing threaded plug are both fixedly installed with L type rotary handle two.

[0009] Further improvement in the technical scheme of the utility model lies in: the outer wall of the oxidizing furnace connecting pipe is provided with butterfly valve.

[0010] Further improvement in the technical scheme of the utility model lies in: the rear side eccentricity of the sealing valve plate is provided with annular clamping groove, the inner wall rear side of the switching control pipe is fixedly installed with annular sealing plate, the inner ring of the annular sealing plate is through and through in the inner cavity of the oxidizing furnace connecting pipe, the annular sealing plate is clamped with annular clamping groove.

[0011] The further improvement in the technical scheme of the utility model lies in that the outer wall of the annular sealing plate is provided with a sealing ring clamping groove, the inner side of the sealing ring clamping groove is provided with an O-shaped sealing rubber ring, the outer wall of the annular sealing plate is provided with a bevel sealing ring at the rear side, and the front side of the bevel sealing ring is designed as a bevel and is overlapped with the rear side outer wall of the sealing valve plate.

[0012] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0013] 1. The utility model provides a kind of lifting valve for regenerative oxidizing furnace, by the mutual cooperation between inner thread installation ring, lifting control valve mechanism, sealing mechanism, oxidizing furnace connecting pipe, butterfly valve, so that the overall lifting control valve mechanism can be realized quick disassembly, improve maintenance efficiency, simultaneously, after disassembly, sealing treatment can be utilized without affecting normal airflow passing through switching control pipe, finally guarantee production efficiency.

[0014] 2. The utility model provides a kind of lifting valve for regenerative oxidizing furnace, by the mutual cooperation between sealing valve plate, annular clamping groove, annular sealing plate, sealing ring clamping groove, O-shaped sealing rubber ring, bevel sealing ring, so as to improve the sealing property of sealing valve plate after closure by the design of double-layer sealing, and by the design of annular sealing plate clamping into annular clamping groove, avoid excessive hot airflow to influence O-shaped sealing rubber ring, improve sealing life. DRAWINGS

[0015] Figure 1 It is the overall schematic view of the utility model structure;

[0016] Figure 2 It is the lifting valve mechanism schematic view of the utility model structure;

[0017] Figure 3 It is the lifting control valve mechanism schematic view of the utility model structure;

[0018] Figure 4 It is the sealing mechanism schematic view of the utility model structure;

[0019] Figure 5 It is the sealing valve plate and annular sealing plate section schematic view of the utility model structure;

[0020] Figure 6 It is the utility model Figure 5 The enlarged schematic view of A place in the utility model.

[0021] In the figure: 1, air flow conveying pipe; 2, poppet valve mechanism; 21, switching control pipe; 211, internally threaded mounting ring; 212, annular sealing plate; 2121, sealing ring clamping groove; 2122, O-shaped sealing rubber ring; 213, beveled sealing ring; 22, oxidation furnace connecting pipe; 221, butterfly valve; 23, poppet control valve mechanism; 231, externally threaded plug; 232, limit ring one; 233, rubber ring; 234, L-shaped rotary handle one; 235, mounting bracket; 236, electric poppet push rod; 237, threaded rod; 238, threaded ring; 239, sealing valve plate; 2391, annular clamping groove; 24, sealing mechanism; 241, anti-lost threaded ring; 242, sealing threaded plug; 243, limit ring two; 244, L-shaped rotary handle two. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0023] As shown in Figure 1 , Figure 2 , Figure 3 The utility model provides a poppet valve for heat accumulating type oxidation furnace, including a plurality of air flow conveying pipes 1, poppet valve mechanism 2 is established between two adjacent air flow conveying pipes 1, poppet valve mechanism 2 includes switching control pipe 21, and the opposite sides of switching control pipe 21 are fixedly connected with the opposite sides of two adjacent air flow conveying pipes 1, and the rear side of switching control pipe 21 is fixedly connected with oxidation furnace connecting pipe 22 penetrating its inner chamber, and the rear end of oxidation furnace connecting pipe 22 is fixedly connected with oxidation furnace, and the front side of switching control pipe 21 is provided with poppet control valve mechanism 23, and the top of switching control pipe 21 is provided with sealing mechanism 24, and the front side of switching control pipe 21 is fixedly connected with internally threaded mounting ring 211 penetrating its inner chamber, and poppet control valve mechanism 23 includes externally threaded plug 231, and the front side of the outer wall of externally threaded plug 231 is fixedly installed with limit ring one 232, and the outer wall of externally threaded plug 231 is threadedly connected with the inner ring of internally threaded mounting ring 211, and the outer wall of externally threaded plug 231 is sleeved with rubber ring 233, and rubber ring 233 is located at the rear side of limit ring one 232, and the rear side of rubber ring 233 is overlapped with the front side of internally threaded mounting ring 211, and the front end of externally threaded plug 231 is fixedly installed with L-shaped rotary handle one 234 on the left and right sides, and the front end of externally threaded plug 231 is fixedly installed with mounting bracket 235 below, and the top of mounting bracket 235 is fixedly installed with electric poppet push rod 236, and the output shaft of electric poppet push rod 236 penetrates to the rear side of externally threaded plug 231 and is fixedly installed with threaded rod 237, and the outer wall of threaded rod 237 is threadedly installed with threaded ring 238, and the rear side of threaded ring 238 is fixedly installed with sealing valve plate 239, and the diameter of sealing valve plate 239 is less than the inner ring diameter of internally threaded mounting ring 211.

[0024] When in use, the gas flow passes through the gas flow conveying pipe 1 through a plurality of poppet mechanisms 2, and the gas flow can be controlled to enter the corresponding regenerator of the oxidation furnace through the oxidation furnace connecting pipe 22 connected to the poppet control valve mechanism 23 at the front side of the switching control pipe 21. When the overall poppet control valve mechanism 23 needs to be maintained, only the overall external threaded plug 231 is rotated by using the two L-shaped rotating handles 234 at the front side of the external threaded plug 231, and the external threaded plug 231 is rotated and removed by using the threaded connection with the internal threaded mounting ring 211, so that the switching control pipe 21 can be pulled out of the inner cavity of the switching control pipe 21 together with the sealing valve plate 239, and the sealing valve plate 239 can be rotated and removed by using the threaded connection between the threaded rod 237 connected to the output end of the electric poppet push rod 236 and the threaded ring 238 at the front side of the sealing valve plate 239, so that the maintenance is more convenient. When installed, only the external threaded plug 231 is aligned with the inner circle of the internal threaded mounting ring 211 and is rotated until the rubber ring 233 at the rear side of the limiting ring one 232 abuts against the front side of the internal threaded mounting ring 211, and the sealing is completed.

[0025] As shown in Figure 4 , the sealing mechanism 24 comprises a loss-preventing threaded ring 241 fixedly installed at the top of the switching control pipe 21, a sealing threaded plug 242 threadedly installed at the inner circle of the loss-preventing threaded ring 241, a limiting ring two 243 fixedly installed at the upper part of the outer wall of the sealing threaded plug 242, a L-shaped rotating handle two 244 fixedly installed at the left and right sides of the top of the sealing threaded plug 242, and a butterfly valve 221 provided at the outer wall of the oxidation furnace connecting pipe 22.

[0026] After the overall poppet control valve mechanism 23 is removed, the sealing threaded plug 242 threadedly installed at the inner circle of the loss-preventing threaded ring 241 is rotated and removed by using the L-shaped rotating handle two 244, and the sealing threaded plug 242 is rotated and tightened by aligning the inner circle of the internal threaded mounting ring 211, so that the sealing of the switching control pipe 21 is completed, and the oxidation furnace connecting pipe 22 can be sealed by rotating the knob of the rotating butterfly valve 221, so that the use of other poppet mechanisms 2 of the oxidation furnace is not affected.

[0027] As shown in Figure 5 , Figure 6 , an annular clamping groove 2391 is formed at the rear side eccentric part of the sealing valve plate 239, an annular sealing plate 212 is fixedly installed at the inner wall of the switching control pipe 21, the inner circle of the annular sealing plate 212 penetrates through the inner cavity of the oxidation furnace connecting pipe 22 in front and back, the annular sealing plate 212 is clamped with the annular clamping groove 2391, a sealing ring clamping groove 2121 is formed at the outer wall of the annular sealing plate 212, an O-shaped sealing rubber ring 2122 is sleeved at the inner side of the sealing ring clamping groove 2121, an inclined sealing ring 213 is sleeved at the rear side of the outer wall of the annular sealing plate 212, and the front side of the inclined sealing ring 213 is designed as an inclined surface and is clamped with the rear side outer wall of the sealing valve plate 239.

[0028] When the output end of the electric lifting push rod 236 controls the sealing valve plate 239 to move backward to seal the connection between the oxidation furnace connecting pipe 22 and the switching control pipe 21, the annular sealing plate 212 will be clamped into the annular clamping groove 2391, and the sealing performance after clamping will be improved by using the O-shaped sealing rubber ring 2122. Until the sealing valve plate 239 stops after abutting against the inclined sealing ring 213, the sealing performance after the sealing valve plate 239 is closed can be improved by using the O-shaped sealing rubber ring 2122 inside the sealing ring clamping groove 2121 and the inclined sealing ring 213. And since the O-shaped sealing rubber ring 2122 is clamped into the inside of the annular clamping groove 2391, it is less affected by the hot gas flow, which can improve the sealing life of the annular clamping groove 2391.

[0029] The working principle of the regenerative oxidation furnace lifting valve will be described in detail below.

[0030] As Figures 1-6As shown, when in use, the gas flow passes through the gas flow conveying pipe 1 through several poppet mechanisms 2, and the gas flow can be controlled to enter the corresponding regenerator connecting pipe 22 of the regenerator by the poppet control valve mechanism 23 in front of the switching control pipe 21, when the overall poppet control valve mechanism 23 needs to be maintained, only the overall external threaded plug 231 is rotated by the two L-shaped rotating handles 234 in front of the external threaded plug 231, and the external threaded plug 231 is rotated and removed by the threaded connection with the internal threaded mounting ring 211, so that the sealing valve plate 239 can be pulled out of the inner cavity of the switching control pipe 21 through the internal threaded mounting ring 211, and the sealing valve plate 239 can be rotated and removed by the threaded connection of the threaded rod 237 connected with the output end of the electric lifting push rod 236 through the threaded ring 238 in front of the sealing valve plate 239, which is more convenient for maintenance, and when installing, only the external threaded plug 231 is aligned with the inner circle of the internal threaded mounting ring 211 and rotated until the rubber ring 233 behind the limiting ring one 232 abuts against the front side of the internal threaded mounting ring 211, and the sealing is completed, and after the overall poppet control valve mechanism 23 is disassembled, the sealing threaded plug 242 threaded in the inner circle of the anti-lost threaded ring 241 can be rotated and removed by the L-shaped rotating handle two 244, and the sealing threaded plug 242 is aligned with the inner circle of the internal threaded mounting ring 211 and rotated tightly, which can complete the sealing of the switching control pipe 21, and the knob of the rotating butterfly valve 221 can cooperate with the rotating butterfly valve 221 to seal the regenerator connecting pipe 22, so as to not affect the use of other poppet mechanisms 2 of the regenerator, when the output end of the electric lifting push rod 236 controls the sealing valve plate 239 to move backward to seal the connection between the regenerator connecting pipe 22 and the switching control pipe 21, the annular sealing plate 212 will be clamped into the annular clamping groove 2391, and the sealing after clamping will be improved by the O-shaped sealing rubber ring 2122, until the sealing valve plate 239 stops abutting against the inclined sealing ring 213, the sealing after the sealing valve plate 239 is closed can be improved by the O-shaped sealing rubber ring 2122 in the inner side of the sealing ring clamping groove 2121 and the inclined sealing ring 213, and since the O-shaped sealing rubber ring 2122 is clamped into the inner side of the annular clamping groove 2391, it is less affected by the hot gas flow, so that the sealing life of the annular clamping groove 2391 can be improved.

[0031] The above has made a detailed description of the present application, but some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the present application are within the protection scope of the present application.

Claims

1. A lifting valve for a regenerative oxidizer, comprising a plurality of gas flow pipes (1), characterized in that: A lifting valve mechanism (2) is provided between two adjacent airflow delivery pipes (1). The lifting valve mechanism (2) includes a switching control pipe (21). The left and right sides of the switching control pipe (21) are fixedly connected to the opposite sides of two adjacent airflow delivery pipes (1). An oxidation furnace connecting pipe (22) penetrating its inner cavity is fixedly connected to the rear side of the switching control pipe (21). An oxidation furnace is fixedly connected to the rear end of the oxidation furnace connecting pipe (22). A lifting control valve mechanism (23) is provided on the front side of the switching control pipe (21). A sealing mechanism (24) is provided on the top of the switching control pipe (21). An internally threaded mounting ring (211) penetrating its inner cavity is fixedly connected to the front side of the switching control pipe (21). The lifting control valve mechanism (23) The device includes an external threaded plug (231), a limiting ring (232) is fixedly installed on the front side of the outer wall of the external threaded plug (231), the outer wall of the external threaded plug (231) is threadedly connected to the inner ring of the internal threaded mounting ring (211), a rubber ring (233) is sleeved on the outer wall of the external threaded plug (231), the rubber ring (233) is located behind the limiting ring (232), the rear side of the rubber ring (233) overlaps with the front side of the internal threaded mounting ring (211), an L-shaped rotating handle (234) is fixedly installed on both the left and right sides of the front end of the external threaded plug (231), an mounting bracket (235) is fixedly installed below the front end of the external threaded plug (231), and an electric lifting push rod (236) is fixedly installed on the top of the mounting bracket (235).

2. The lifting valve for a regenerative oxidation furnace according to claim 1, characterized in that: The output shaft of the electric lifting push rod (236) extends to the rear side of the external threaded plug (231) and is fixedly mounted with a threaded rod (237). A threaded ring (238) is threaded on the outer wall of the threaded rod (237). A sealing valve plate (239) is fixedly mounted on the rear side of the threaded ring (238). The diameter of the sealing valve plate (239) is smaller than the inner ring diameter of the internal threaded mounting ring (211).

3. The lifting valve for a regenerative oxidation furnace according to claim 1, characterized in that: The sealing mechanism (24) includes an anti-loss threaded ring (241), which is fixedly installed on the top of the switching control tube (21). A sealing threaded plug (242) is installed on the inner ring thread of the anti-loss threaded ring (241). A limit ring II (243) is fixedly installed on the upper outer wall of the sealing threaded plug (242). The bottom of the limit ring II (243) overlaps with the top of the anti-loss threaded ring (241). L-shaped rotating handles II (244) are fixedly installed on the left and right sides of the top of the sealing threaded plug (242).

4. The lifting valve for a regenerative oxidizer according to claim 1, characterized in that: A butterfly valve (221) is provided on the outer wall of the oxidation furnace connecting pipe (22).

5. The lifting valve for a regenerative oxidizer according to claim 2, characterized in that: An annular groove (2391) is provided at the rear eccentric position of the sealing valve plate (239). An annular sealing plate (212) is fixedly installed on the rear side of the inner wall of the switching control pipe (21). The inner ring of the annular sealing plate (212) is in communication with the inner cavity of the oxidation furnace connecting pipe (22). The annular sealing plate (212) is engaged with the annular groove (2391).

6. The lifting valve for a regenerative oxidizer according to claim 5, characterized in that: The outer wall of the annular sealing plate (212) is provided with a sealing ring groove (2121), and an O-ring sealing rubber ring (2122) is fitted inside the sealing ring groove (2121). A beveled sealing ring (213) is fitted on the rear side of the outer wall of the annular sealing plate (212). The front side of the beveled sealing ring (213) is designed with a bevel and overlaps with the rear outer wall of the sealing valve plate (239).

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