CN107191628B - A kind of reversal valve for rotary regenerative oxidation furnace - Google Patents

A kind of reversal valve for rotary regenerative oxidation furnace Download PDF

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Publication number
CN107191628B
CN107191628B CN201710547823.XA CN201710547823A CN107191628B CN 107191628 B CN107191628 B CN 107191628B CN 201710547823 A CN201710547823 A CN 201710547823A CN 107191628 B CN107191628 B CN 107191628B
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China
Prior art keywords
gas chamber
valve
outline border
exhaust gas
chamber
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CN201710547823.XA
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CN107191628A (en
Inventor
任玲辉
苏翔宇
张涛
刘文涛
张兴旺
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Xi'an Yu Chang Environmental Technology Co Ltd
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Xi'an Yu Chang Environmental Technology Co Ltd
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Application filed by Xi'an Yu Chang Environmental Technology Co Ltd filed Critical Xi'an Yu Chang Environmental Technology Co Ltd
Priority to CN201710547823.XA priority Critical patent/CN107191628B/en
Publication of CN107191628A publication Critical patent/CN107191628A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/085Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/06Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/065Construction of housing; Use of materials therefor of taps or cocks with cylindrical plugs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/0407Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08Details
    • F16K5/14Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/18Special arrangements for separating the sealing faces or for pressing them together for plugs with cylindrical surfaces
    • F16K5/181Special arrangements for separating the sealing faces or for pressing them together for plugs with cylindrical surfaces with the housing or parts of the housing mechanically pressing the seals against the plugs

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multiple-Way Valves (AREA)
  • Sliding Valves (AREA)

Abstract

The invention discloses a kind of reversal valve for rotary regenerative oxidation furnace, including valve outline border and valve body, valve body includes support shaft and the three-layer sealed ring for being connected to support shaft upper section, and the periphery and valve outline border of three-layer sealed ring are in sealing contact;Two annular seal zones are formed between three-layer sealed ring and valve outline border: wherein, first annular sealing area includes, gas chamber and the purging chamber being arranged between after the first exhaust gas chamber mutually completely cut off and the first purification, and valve outline border corresponds to the provided circumferentially about of the annular seal zones several apertures, gas chamber is connected to by aperture with furnace chamber after the first exhaust gas chamber and the first purification;The problem of gas chamber is directly connected to gas chamber after avoiding the first purification, causes exhaust gas to mix discharge with purified gas, purification efficiency is caused to reduce.

Description

A kind of reversal valve for rotary regenerative oxidation furnace
Technical field
The invention belongs to organic exhaust gas high-temperature oxydation technical fields, and in particular to a kind of continuous rotation gas distributing valve door, Especially it is used for the change valve device of rotary regenerative oxidation organic exhaust gas equipment.
Background technique
Heat accumulation type thermal oxidation furnace (RTO) is the novel removal of one kind volatile organic matter (VOCs) equipment, is existed in recent years VOCs process field is rapidly developed and is popularized, its working principle is that at high temperature by VOCs combustion oxidation at CO2And water, reach net Change purpose, and recycle the heat released when exhaust gas decomposes, exhaust gas decomposition efficiency reaches 99% or more, and heat recovery efficiency reaches To 95% or more.The main structure of heat accumulation type thermal oxidation furnace is made of combustion chamber, ceramic packing bed and switching valve etc., existing market On it is in the majority with body structure, switching valve is mainly shut-off valve, realizes switching by switch, moving at the same time in handoff procedure will lead to A part of exhaust gas enters clean room, and purification efficiency is not so good as rotary heat accumulation type thermal oxidation furnace, and there are also rotations currently on the market The rotating transfer valve of formula regenerative oxidation furnace, there is no shutdowns to act, and at the uniform velocity rotates, and reduces impact, sealing effect is more preferable, durable Property is more preferable, and still, rotating transfer valve causes untreated exhaust gas since the switching turntable of rotation with static cavity is difficult to seal It is directly mixed in processed gas, causes purification efficiency not high.
Summary of the invention
To solve the above-mentioned problems, the object of the present invention is to provide switched on a kind of rotary accumulation of heat incinerator with rotation Valve solves exhaust gas and purified gas in current rotary valve and the case where mixed flow easily occurs, effectively improves the purification efficiency of processing exhaust gas.
To achieve the goals above, the technical solution that the present invention uses is: one kind being used for rotary regenerative oxidation furnace Reversal valve, including valve outline border and valve body, valve body includes support shaft and the three-layer sealed ring for being connected to support shaft upper section, three layers The periphery of sealing ring and valve outline border are in sealing contact;Two annular seal zones are formed between three-layer sealed ring and valve outline border:
Wherein, first annular sealing area includes gas chamber after the first exhaust gas chamber mutually completely cut off and the first purification And the purging chamber being arranged between, and valve outline border corresponds to the provided circumferentially about of the annular seal zones several open Gas chamber is connected to by aperture with furnace chamber after hole, the first exhaust gas chamber and the first purification;
Second annular seal zones are provided with corresponding with the first exhaust gas chamber and connection the second exhaust gas chamber, net with first Gas chamber after Hua Hou gas chamber is corresponding and the second purification of connection, gas chamber's phase after the second exhaust gas chamber is purified with second Mutually isolation, and valve outline border corresponds to the provided circumferentially about of the annular seal zones several apertures, the second exhaust gas chamber passes through aperture With exhaust gas chamber to be processed, gas chamber and exhaust gas chamber to be processed completely cut off after the second purification;
It further include the air-out cavity being connect with valve outline border lower end, air-out cavity side is offered for exhaust gas after discharge purification Air outlet, air-out cavity with second purification after gas chamber be connected to, and with the second exhaust gas chamber isolation.
Valve frame structure is in cone, and the taper of three-layer sealed ring is consistent with valve outline border, and spring is arranged in support shaft, On bottom sealing ring, end is arranged in support shaft spring apical support.
Both ends of the spring is each provided with a limit plate, tenses the deformation quantity of control spring between two limit plates by bolt.
Support the tip of the axis is connected with the decelerating motor being used to provide power by shaft coupling.
Support shaft lower section offers purging wind inlet, the purging air inlet cavity of cladding purging wind inlet is equipped with, by close Seal upper press cover and sealing ring lower cover will purge wind sealing and be pressed between purging air inlet cavity and support shaft;Purging air inlet cavity Intake stack stretch out air-out cavity for access purging wind.
Sealing device is provided between the periphery and valve outline border of sealing ring, sealing device includes being arranged in sealing ring circumference On annular backing plate and be fixed on the ring type seal on annular backing plate with face contact on the inside of valve outline border.
The rotation direction of valve body be from purging chamber be directed toward the first discarded chamber, and furnace chamber with first annular sealing area Level position is provided with several gas chambers, and gas chamber is provided with opening close to one end of valve body, and gas chamber opening width is less than and blows Sweep the opening width at chamber air outlet.
The ring type seal is made of the heat-resistant, wear-resistants material such as polytetrafluoroethylene (PTFE), graphite, antifriction metal (AFM) or rubber.
Radial clearance seals structure is additionally provided between valve outline border and valve body, the radial plate including valve outer wall is arranged in, And the pressing plate being fastened by bolts with radial plate, compressing between radial plate and pressing plate has apex sealing strip, and apex sealing strip is tight Paste the inner wall of valve outline border;It totally two groups of radial clearance seals structure, is distributed on 180 ° of directions of circular section, every group close containing 3~4 Sealing.
First annular sealing area is arranged on the second annular seal zones.
First annular sealing area is arranged under the second annular seal zones.
Compared with prior art, the present invention at least has the advantages that by net in the first exhaust gas chamber and first Setting purging chamber between Hua Hou gas chamber, the rotation direction of valve body are to be directed toward the first discarded chamber from purging chamber, so In the rotation process of valve body, gas chamber's first discarded used furnace chamber gas chamber of chamber with before is connected to after the first purification Before, purging wind is sent into gas chamber from purging chamber, the exhaust gas in gas chamber is poured in furnace, gas after the first purification is avoided The problem of chamber is directly connected to gas chamber, causes exhaust gas to mix discharge with purified gas, purification efficiency is caused to reduce.
Further, the present invention is sealed by being arranged with spring, the apical support of spring in support shaft in the lowermost On ring, and valve frame structure, in cone, and the taper of three-layer sealed ring is consistent with valve outline border, sealing ring and valve outline border it Between sealing effect reduce when, spring is applied with upward active force to sealing ring, forces the patch of sealing ring Yu valve outline border paper It closes closer, so as to effectively show the sealing performance for improving reversal valve, reduces regenerative oxidation furnace to the exhaust gas leakage of VOCs It measures, and increases the service life of valve body by the pretightning force of spring, keep the purification efficiency of rotary regenerative oxidation furnace significant It is promoted, further effectively controls the disposal of pollutants of organic exhaust gas VOCs.
One key technology of rotary regenerative oxidation furnace is exactly the leakproofness and stability of rotating transfer valve;Since plate welds Part processing and Control Thermal Deformation difficulty limitation, sealing performance it is difficult to ensure that, especially pressure medium fluctuation it is excessive, will lead The mixed flow and leakage for causing exhaust gas and fresh air gas in operational process, directly affect the decomposition efficiency and durability of RTO furnace, RTO The durability of furnace body is stronger.
Detailed description of the invention
Below according to attached drawing, the invention will be further described with specific embodiment:
Fig. 1 is overall structure figure of the present invention;
Fig. 2 is the Section A-A cross-sectional view of Fig. 1;
Fig. 3 is the section B-B cross-sectional view of Fig. 1;
Fig. 4 is axial seal partial sectional view.
In figure: 1- valve outline border, 2- upper bearing sleeve, 3- valve body, 4- annular backing plate, 5- ring type seal, 6- spring, 7- support Axis, 8- purging air inlet cavity, 9- sealing ring upper press cover, 10- sealing ring lower cover, 11- lower bearing sleeve, 12- supporting bearing base, 13- air-out cavity, 14- speed reducer cavity, 15- bearing, 16- spring bearing, 17- shaft coupling, 18- decelerating motor, 19- outlet air Mouthful, 20- radial plate, 21- apex sealing strip, 22- pressing plate.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
Such as attached drawing 1~be represented in Fig. 4, double-head arrow direction is waste gas stream through direction, and single arrow direction is to purge distinguished and admirable classical prescription To three arrow directions are that purified gas flows through direction;The present invention includes valve outline border 1 and valve body 3, and valve body 3 includes support shaft 7 And it is connected to the three-layer sealed ring of 7 upper section of support shaft, the periphery and valve outline border 1 of three-layer sealed ring are in sealing contact;Three layers close Two annular seal zones are formed between seal ring and valve outline border 1:
Wherein, first annular sealing area includes gas chamber after the first exhaust gas chamber mutually completely cut off and the first purification And the purging chamber being arranged between, and corresponding the provided circumferentially about of the annular seal zones of valve outline border 1 has several open Gas chamber is connected to by aperture with furnace chamber after hole, the first exhaust gas chamber and the first purification;
Second annular seal zones are provided with corresponding with the first exhaust gas chamber and connection the second exhaust gas chamber, net with first Gas chamber after Hua Hou gas chamber is corresponding and the second purification of connection, gas chamber's phase after the second exhaust gas chamber is purified with second Mutually isolation, and corresponding the provided circumferentially about of the annular seal zones of valve outline border 1 has several apertures, the second exhaust gas chamber passes through aperture With exhaust gas chamber to be processed, gas chamber and exhaust gas chamber to be processed completely cut off after the second purification;
It further include the air-out cavity 13 being connect with 1 lower end of valve outline border, 13 side of air-out cavity is offered for purification to be discharged The air outlet 19 of exhaust gas afterwards, purified gas enter chimney from air outlet 19;Air chamber after air-out cavity 13 and the second purification Room connection, and completely cut off with the second exhaust gas chamber;7 lower section of support shaft offers purging wind inlet, is equipped with cladding purging wind inlet Purging enter the wind cavity 8, wind sealing will be purged by sealing ring upper press cover 9 and sealing ring lower cover 10 and be pressed in purging air inlet cavity Between 8 and support shaft 7;The intake stack of purging air inlet cavity 8 stretches out air-out cavity 13 for accessing purging wind.
As shown in Figure 1,1 structure of valve outline border is in cone, and the taper of three-layer sealed ring and valve outline border 1 are consistent, support shaft 7 On be arranged with spring 6,6 apical support of spring on bottom sealing ring, end be arranged in support shaft 7;6 both ends of spring are respectively set It is equipped with a limit plate, tenses the deformation quantity of control spring 6 between two limit plates by bolt, the end of support shaft 7 passes through shaft coupling Section 17 is connected with the decelerating motor 18 being used to provide power.
As shown in figure 4, being provided with sealing device between the periphery and valve outline border 1 of sealing ring, sealing device includes setting In the annular backing plate 4 on sealing ring circumference and it is fixed on the ring type seal 5 on annular backing plate 4 with 1 inside face contact of valve outline border, Ring type seal 5 is made of polytetrafluoroethylene (PTFE), graphite, antifriction metal (AFM) or rubber.
As shown in Fig. 2, being additionally provided with radial clearance seals structure between valve outline border 1 and valve body 3, including it is arranged in valve body 3 The radial plate 20 of outer wall, and the pressing plate 22 being fastened by bolts with radial plate 20, compressing between radial plate 20 and pressing plate 22 has Apex sealing strip 21, apex sealing strip 21 are close to the inner wall of valve outline border 1;It totally two groups of radial clearance seals structure, is distributed in circle and cuts On 180 ° of directions in face, every group contains 3~4 sealing elements.
In a certain embodiment of the invention, first annular sealing area is arranged on the second annular seal zones;? In the other embodiment of the present invention, first annular sealing area is arranged under the second annular seal zones.
The rotation of valve body 3 of the invention is driven by decelerating motor 18, realizes the continual rotation of continuously and smoothly, valve body 3 Rotational structure are as follows: decelerating motor 18 connects support shaft 7 by shaft coupling 17, and support shaft 7 and 3 central axis of valve body are connected as one The bearing of body, valve body 3 is realized by upper bearing sleeve 2, lower bearing sleeve 11 and bearing 15, spring bearing 16 and supporting bearing base 12; It purges wind and support shaft 7 and valve body 3 is entered by purging air inlet cavity 8, structure is by under sealing ring upper press cover 9 and sealing ring Gland 10 will purge wind sealing and be pressed between purging air inlet cavity 8 and support shaft 7, prevent mixed flow.Between valve outline border 1 and valve body 3 Axial seal valve body is divided into upper layer and lower layer by 3 lantern ring shape sealing rings 5 and annular backing plate 4, for guarantee sealing reliability And valve outline border 1 and 3 shape of valve body are to be arranged to cone by durability, spy, taper is consistent, will by the upward elastic force of spring 6 Valve body 3 up squeezes, and guarantees that ring type seal 5 and valve outline border 1 are in close contact, and prevent ring type seal 5 from wearing for a long time out A possibility that existing gap, extends 5 service life of sealing ring, while enhancing the sealing effect of sealing ring 5.The radial direction of reversal valve is close 2 groups of setting is sealed, is distributed in 180 degree, sees Fig. 2, this sealing only has on the upper layer of valve body 3, and upper layer is divided into exhaust zone, is gone out only The area Hua Qi and purge gass area, the structure of sealing are that radial plate 20 is welded on valve body 3, are pressed apex sealing strip 21 by pressing plate 22 Firmly, it to form seal area by being swept with the inner wall of valve outline border 1 and reaches sealing purpose.

Claims (8)

1. a kind of reversal valve for rotary regenerative oxidation furnace, which is characterized in that including valve outline border (1) and valve body (3), valve body It (3) include support shaft (7) and the three-layer sealed ring for being connected to support shaft (7) upper section, outside the periphery and valve of three-layer sealed ring Frame (1) is in sealing contact;Two annular seal zones are formed between three-layer sealed ring and valve outline border (1):
Wherein, first annular sealing area include the first exhaust gas chamber mutually completely cut off and first purification after gas chamber and The purging chamber being arranged between, and corresponding the provided circumferentially about of the annular seal zones of valve outline border (1) has several apertures, Gas chamber is connected to by aperture with furnace chamber after first exhaust gas chamber and the first purification;
Second annular seal zones are provided with corresponding with the first exhaust gas chamber and connection the second exhaust gas chamber, after the first purification Gas chamber after gas chamber is corresponding and the second purification of connection, after the second exhaust gas chamber is purified with second gas chamber mutually every Absolutely, and the provided circumferentially about of the corresponding annular seal zones of valve outline border (1) has several apertures, the second exhaust gas chamber by aperture with Exhaust gas chamber to be processed, gas chamber and exhaust gas chamber to be processed completely cut off after the second purification;
It further include the air-out cavity (13) being connect with valve outline border (1) lower end, air-out cavity (13) side offers net for being discharged The air outlet (19) of exhaust gas after change, air-out cavity (13) with second purification after gas chamber be connected to, and with the second exhaust gas chamber every Absolutely;
Valve outline border (1) structure is in cone, and the taper of three-layer sealed ring and valve outline border (1) are unanimously, and support shaft is arranged on (7) Spring (6), on bottom sealing ring, end is arranged on support shaft (7) spring (6) apical support;
The end of support shaft (7) is connected with the decelerating motor (18) being used to provide power by shaft coupling (17).
2. a kind of reversal valve for rotary regenerative oxidation furnace according to claim 1, which is characterized in that spring (6) Both ends are each provided with a limit plate, tense the deformation quantity of control spring (6) between two limit plates by bolt.
3. a kind of reversal valve for rotary regenerative oxidation furnace according to claim 1, which is characterized in that support shaft (7) lower section offers purging wind inlet, purging air inlet cavity (8) of cladding purging wind inlet is equipped with, by pressing on sealing ring Lid (9) and sealing ring lower cover (10) will purge wind sealing and be pressed between purging air inlet cavity (8) and support shaft (7);It is purged into The intake stack of wind cavity (8) stretches out air-out cavity (13) for accessing purging wind.
4. a kind of reversal valve for rotary regenerative oxidation furnace according to claim 1, which is characterized in that sealing ring Sealing device is provided between periphery and valve outline border (1), sealing device includes the annular backing plate being arranged on sealing ring circumference (4) and be fixed on annular backing plate (4) with valve outline border (1) on the inside of face contact ring type seal (5).
5. a kind of reversal valve for rotary regenerative oxidation furnace according to claim 1, which is characterized in that valve body (3) Rotation direction be from purging chamber be directed toward the first exhaust gas chamber, and furnace chamber with the level position of first annular sealing area It installs and is equipped with several gas chambers, gas chamber is provided with opening close to one end of valve body, and gas chamber opening width is less than purging chamber outlet air Opening width at mouthful.
6. a kind of reversal valve for rotary regenerative oxidation furnace according to claim 1, which is characterized in that valve outline border (1) it is additionally provided with radial clearance seals structure between valve body (3), including the radial plate (20) in valve body (3) outer wall is arranged, with And the pressing plate (22) being fastened by bolts with radial plate (20), compressing between radial plate (20) and pressing plate (22) has apex sealing strip (21), apex sealing strip (21) is close to the inner wall of valve outline border (1);Totally two groups of radial clearance seals structure, it is distributed in circular section On 180 ° of directions, every group contains 3~4 sealing elements.
7. a kind of reversal valve for rotary regenerative oxidation furnace according to claim 1, which is characterized in that first annular Sealing area is arranged on the second annular seal zones.
8. a kind of reversal valve for rotary regenerative oxidation furnace according to claim 1, which is characterized in that first annular Sealing area is arranged under the second annular seal zones.
CN201710547823.XA 2017-07-06 2017-07-06 A kind of reversal valve for rotary regenerative oxidation furnace Active CN107191628B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710547823.XA CN107191628B (en) 2017-07-06 2017-07-06 A kind of reversal valve for rotary regenerative oxidation furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710547823.XA CN107191628B (en) 2017-07-06 2017-07-06 A kind of reversal valve for rotary regenerative oxidation furnace

Publications (2)

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CN107191628A CN107191628A (en) 2017-09-22
CN107191628B true CN107191628B (en) 2018-12-04

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107631054B (en) * 2017-10-18 2023-04-04 西安昱昌环境科技有限公司 Self sealss RTO rotary valve

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4204499B2 (en) * 2004-03-19 2009-01-07 株式会社大気社 Rotary switching valve and heat storage type gas processing apparatus using the same
KR101220126B1 (en) * 2004-06-28 2013-01-11 가부시키가이샤 다이키샤 Heat storage type gas processing apparatus
KR100918880B1 (en) * 2009-06-08 2009-09-28 (주)케스지기술환경 Apparatus for regenerative thermal oxidation process with rotary type
CN201795094U (en) * 2010-09-08 2011-04-13 鞍钢股份有限公司 Three-way change valve
CN203656266U (en) * 2013-12-24 2014-06-18 青岛华世洁环保科技有限公司 Reversing valve for rotary type thermal storage oxidizing furnace
CN207213252U (en) * 2017-07-06 2018-04-10 西安昱昌环境科技有限公司 A kind of reversal valve for rotary regenerative oxidation stove

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Denomination of invention: Reversing valve used for rotary heat-accumulation oxidizing furnace

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Pledgee: Xi'an Science and Technology Financial Service Center Co.,Ltd.

Pledgor: XI'AN YURCENT ENVIRONMENTAL TECHNOLOGY Co.,Ltd.

Registration number: Y2021610000263