CN207213252U - A kind of reversal valve for rotary regenerative oxidation stove - Google Patents
A kind of reversal valve for rotary regenerative oxidation stove Download PDFInfo
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- CN207213252U CN207213252U CN201720814023.5U CN201720814023U CN207213252U CN 207213252 U CN207213252 U CN 207213252U CN 201720814023 U CN201720814023 U CN 201720814023U CN 207213252 U CN207213252 U CN 207213252U
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Abstract
The utility model discloses a kind of reversal valve for rotary regenerative oxidation stove, including valve housing and valve body, valve body includes support shaft and is connected to the three-layer sealed ring of support shaft epimere, and the periphery and valve housing of three-layer sealed ring are in sealing contact；Two annular seal zones are formed between three-layer sealed ring and valve housing：Wherein, first annular sealing area includes, gas chamber and the purging chamber being arranged between after the first waste gas chamber mutually completely cut off and the first purification, and valve housing to should the provided circumferentially about of annular seal zones have some perforates, gas chamber is connected by perforate with furnace chamber after the first waste gas chamber and the first purification；Gas chamber directly connects with air chamber after avoiding the first purification, causes waste gas to mix discharge with purified gas, the problem of causing purification efficiency to reduce.
Description
Technical field
The utility model belongs to organic exhaust gas high-temperature oxydation technical field, and in particular to one kind is used for rotary regenerative oxidation
The reversal valve of stove, the particularly change valve device for rotary regenerative oxidation organic exhaust gas equipment.
Background technology
Heat accumulation type thermal oxidation stove (RTO) is a kind of new removal volatile organic matter (VOCs) equipment, is existed in recent years
VOCs process fields are developed rapidly and popularized, and its operation principle is at high temperature by VOCs combustion oxidations into CO2And water, reach
Purpose is purified, and reclaims the heat discharged when waste gas decomposes, waste gas decomposition efficiency reaches more than 99%, heat recovery efficiency
Reach more than 95%.The agent structure of heat accumulation type thermal oxidation stove is made up of combustion chamber, ceramic packing bed and switching valve etc., at present city
In the majority with body structure on, switching valve is mainly shut-off valve, realizes switching by switching, acts and can lead simultaneously in handoff procedure
A part of waste gas is caused to enter clean room, purification efficiency is not so good as rotary heat accumulation type thermal oxidation stove, also there are some rotations in the market
The rotating transfer valve of rotatable regenerative oxidation stove, act in the absence of shut-off, at the uniform velocity rotate, reduce impact, sealing effectiveness is more preferable, resistance to
More preferable with property, still, rotating transfer valve causes untreated useless because the switching rotating disk of rotation is difficult to seal with static cavity
Gas is directly mixed in processed gas, causes purification efficiency not high.
Utility model content
In order to solve the above problems, the purpose of this utility model is to provide a kind of commutation for rotary regenerative oxidation stove
Valve, solves that the situation of mixed flow easily occur in waste gas and purified gas in current rotary valve, effectively improves the purification efficiency of processing waste gas.
To achieve these goals, the technical solution of the utility model use is：One kind is used for rotary accumulation of heat oxygen
Change the reversal valve of stove, including valve housing and valve body, valve body includes support shaft and is connected to the three-layer sealed ring of support shaft epimere,
The periphery of three-layer sealed ring and valve housing are in sealing contact；Liang Ge ring packings area is formed between three-layer sealed ring and valve housing
Domain：
Wherein, first annular sealing area includes, gas chamber after the first waste gas chamber mutually completely cut off and the first purification
And the purging chamber being arranged between, and valve housing to should the provided circumferentially about of annular seal zones have some open
Gas chamber is connected by perforate with furnace chamber after hole, the first waste gas chamber and the first purification；
Second annular seal zones are provided with corresponding with the first waste gas chamber and connection the second waste gas chamber, net with first
Hua Hou gas chamber corresponds to and gas chamber after the second purification of connection, gas chamber's phase after the second waste gas chamber and the second purification
Mutually isolation, and valve housing to should the provided circumferentially about of annular seal zones have some perforates, the second waste gas chamber passes through perforate
With pending waste gas chamber, gas chamber completely cuts off with pending waste gas chamber after the second purification；
Also include the air-out cavity being connected with valve housing lower end, air-out cavity side is offered for waste gas after discharge purification
Air outlet, air-out cavity with second purification after gas chamber connect, and with the second waste gas chamber isolation.
Valve frame structure is in cone, and the taper of three-layer sealed ring is consistent with valve housing, and spring is arranged with support shaft,
Spring top is supported on bottom sealing ring, and end is arranged in support shaft.
Both ends of the spring is each provided with a limiting plate, tenses the deformation quantity of control spring between two limiting plates by bolt.
Support the tip of the axis is connected with the reducing motor for providing power by shaft coupling.
Support shaft hypomere offers purging wind inlet, the purging air intake cavity of cladding purging wind inlet is provided with, by close
Seal upper press cover and sealing ring lower cover will purge wind sealing and be pressed between purging air intake cavity and support shaft；Purge air intake cavity
Intake stack stretch out air-out cavity be used for access purging wind.
Sealing device is provided between the periphery and valve housing of sealing ring, sealing device includes being arranged on sealing ring circumference
On annular backing plate and be fixed on the O-ring seal contacted on annular backing plate with valve housing medial surface.
The rotation direction of valve body is to point to the first discarded chamber from purging chamber, and furnace chamber with first annular sealing area
Level position is provided with some air chambers, and air chamber is provided with opening close to one end of valve body, and air chamber A/F is less than and blown
Sweep the A/F at wind chamber air outlet.
The O-ring seal is made up of the heat-resistant, wear-resistant material such as polytetrafluoroethylene (PTFE), graphite, antifriction metal (AFM) or rubber.
Radial clearance seals structure is additionally provided between valve housing and valve body, including is arranged on the radial plate of valve outer wall,
And the pressing plate being fastened by bolts with radial plate, being compressed between radial plate and pressing plate has apex sealing strip, and apex sealing strip is tight
Paste the inwall of valve housing；Totally two groups of radial clearance seals structure, is distributed on 180 ° of directions of circular section, and 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 utility model at least has the advantages that：By in the first waste gas chamber and
Purging chamber is set after one purification between gas chamber, the rotation direction of valve body is to point to the first discarded chamber from purging chamber,
So in the rotation process of valve body, gas chamber's first used furnace chamber air chamber of discarded chamber with before after the first purification
Before connection, purging wind is sent into air chamber from purging chamber, the waste gas in air chamber is poured in stove, after avoiding the first purification
Gas chamber directly connects with air chamber, causes waste gas to mix discharge with purified gas, the problem of causing purification efficiency to reduce.
Further, the utility model in support shaft by being arranged with spring, and the apical support of spring is in bottom
On sealing ring, and valve frame structure is in cone, and the taper of three-layer sealed ring is consistent with valve housing, outside sealing ring and valve
When sealing effectiveness between frame reduces, spring is applied with upward active force to sealing ring, forces sealing ring and valve housing paper
Fitting it is closer, so as to effectively show the sealing property for improving reversal valve, reduce regenerative oxidation stove to VOCs waste gas
Leakage rate, and the service life of valve body is added by the pretightning force of spring, make the purification efficiency of rotary regenerative oxidation stove
It is obviously improved, further effectively controls organic exhaust gas VOCs disposal of pollutants.
One key technology of rotary regenerative oxidation stove is exactly the sealing and stability of rotating transfer valve；Because plate welds
Part process and Control Thermal Deformation difficulty limitation, sealing property it is difficult to ensure that, particularly pressure medium fluctuation it is excessive, will lead
Mixed flow and leakage of the waste gas with fresh air gas in running are caused, directly affects the decomposition efficiency and durability of RTO stoves, RTO
The durability of body of heater is stronger.
Brief description of the drawings
Below according to accompanying drawing, the utility model is described in further detail with embodiment：
Fig. 1 is the utility model of the whole structure diagram；
Fig. 2 is Fig. 1 Section A-A sectional view；
Fig. 3 is Fig. 1 section B-B sectional view；
Fig. 4 is axial seal partial sectional view.
In figure：1- valve housings, 2- upper bearing sleeves, 3- valve bodies, 4- annular backing plates, 5- O-ring seals, 6- springs, 7- supports
Axle, 8- purging air intake cavitys, 9- sealing ring upper press covers, 10- sealing ring lower covers, 11- lower bearing sleeves, 12- supporting bearing bases,
13- air-out cavities, 14- reductor cavitys, 15- bearings, 16- spring bearings, 17- shaft couplings, 18- reducing motors, 19- air-out
Mouthful, 20- radial plates, 21- apex sealing strips, 22- pressing plates.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
As represented in 1~Fig. 4 of accompanying drawing, double-head arrow direction be waste gas stream through direction, single direction of arrow is purges distinguished and admirable classical prescription
To three directions of arrow are that purified gas flows through direction；The utility model includes valve housing 1 and valve body 3, and valve body 3 includes branch
Support axle 7 and the three-layer sealed ring for being connected to the epimere of support shaft 7, the periphery and valve housing 1 of three-layer sealed ring are in sealing contact；
Two annular seal zones are formed between three-layer sealed ring and valve housing 1：
Wherein, first annular sealing area includes, gas chamber after the first waste gas chamber mutually completely cut off and the first purification
And the purging chamber being arranged between, and valve housing 1 to should the provided circumferentially about of annular seal zones have some open
Gas chamber is connected by perforate with furnace chamber after hole, the first waste gas chamber and the first purification；
Second annular seal zones are provided with corresponding with the first waste gas chamber and connection the second waste gas chamber, net with first
Hua Hou gas chamber corresponds to and gas chamber after the second purification of connection, gas chamber's phase after the second waste gas chamber and the second purification
Mutually isolation, and valve housing 1 to should the provided circumferentially about of annular seal zones have some perforates, the second waste gas chamber passes through perforate
With pending waste gas chamber, gas chamber completely cuts off with pending waste gas chamber after the second purification；
Also include the air-out cavity 13 being connected with the lower end of valve housing 1, the side of air-out cavity 13 is offered for discharging purification
The air outlet 19 of waste gas afterwards, purified gas enter chimney from air outlet 19；Air chamber after air-out cavity 13 and second purifies
Room connects, and completely cuts off with the second waste gas chamber；The hypomere of support shaft 7 offers purging wind inlet, is provided with cladding purging wind inlet
Purging air intake 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 intake cavity
Between 8 and support shaft 7；The intake stack for purging air intake cavity 8 stretches out air-out cavity 13 for accessing purging wind.
As shown in figure 1, the structure of valve housing 1 is in cone, and the taper of three-layer sealed ring is consistent with valve housing 1, support shaft 7
On be arranged with spring 6, on bottom sealing ring, end is arranged in support shaft 7 apical support of spring 6；The both ends of spring 6 are respectively set
A limiting plate is equipped with, tenses the deformation quantity of control spring 6 between two limiting plates by bolt, the end of support shaft 7 passes through shaft coupling
Section 17 is connected with the reducing motor 18 for providing power.
As shown in figure 4, being provided with sealing device between the periphery and valve housing 1 of sealing ring, sealing device includes setting
Annular backing plate 4 on sealing ring circumference and the O-ring seal 5 contacted on annular backing plate 4 with the medial surface of valve housing 1 is fixed on,
O-ring seal 5 is made up of polytetrafluoroethylene (PTFE), graphite, antifriction metal (AFM) or rubber.
As shown in Fig. 2 being additionally provided with radial clearance seals structure between valve housing 1 and valve body 3, including it is arranged on valve body 3
The radial plate 20 of outer wall, and the pressing plate 22 being fastened by bolts with radial plate 20, being compressed between radial plate 20 and pressing plate 22 has
Apex sealing strip 21, apex sealing strip 21 are close to the inwall of valve housing 1；Totally two groups of radial clearance seals structure, it is distributed in circle and cuts
On 180 ° of directions in face, every group contains 3~4 seals.
In a certain embodiment of the present utility model, first annular sealing area be arranged on the second annular seal zones it
On；In other embodiment of the present utility model, first annular sealing area is arranged under the second annular seal zones.
The rotation of valve body 3 of the present utility model is driven by reducing motor 18, realizes the continual rotation of continuously and smoothly, valve
The rotational structure of body 3 is：Reducing motor 18 connects support shaft 7 by shaft coupling 17, and support shaft 7 is connected as with the central shaft of valve body 3
One, the supporting of valve body 3 are real by upper bearing sleeve 2, lower bearing sleeve 11 and bearing 15, spring bearing 16 and supporting shaft holder 12
It is existing；Purging wind enters support shaft 7 and valve body 3 by purging air intake cavity 8, and its structure is by sealing ring upper press cover 9 and sealing
Circle lower cover 10 will purge wind sealing and be pressed between purging air intake cavity 8 and support shaft 7, prevent mixed flow.Valve housing 1 and valve body 3
Between axial seal valve body is divided into two layers up and down by 3 collar shape sealing rings 5 and annular backing plate 4, can for ensure sealing
By property and durability, for spy by valve housing 1 and the profile of valve body 3 to be arranged to cone, taper is consistent, passes through the upward bullet of spring 6
Power up squeezes valve body 3, ensures that O-ring seal 5 is in close contact with valve housing 1, and prevent O-ring seal 5 from grinding for a long time
There is the possibility in gap in damage, extends the service life of sealing ring 5, while enhance the sealing effectiveness of sealing ring 5.The footpath of reversal valve
To 2 groups of sealed set, be distributed in 180 degree, see Fig. 2, this sealing only has on the upper strata of valve body 3, by upper strata be divided into exhaust zone,
Go out purified gas area and purge gass area, the structure of sealing is welded on valve body 3 for radial plate 20, by pressing plate 22 by apex sealing strip
21 push down, and to form seal area by being swept with the inwall of valve housing 1 and reach sealing purpose.
Claims (10)
1. a kind of reversal valve for rotary regenerative oxidation stove, it is characterised in that including valve housing (1) and valve body (3), valve body
(3) include support shaft (7) and be connected to the three-layer sealed ring of support shaft (7) epimere, 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 housing (1)：
Wherein, first annular sealing area includes, the first waste gas chamber mutually completely cut off and first purification after gas chamber and
The purging chamber being arranged between, and valve housing (1) to should the provided circumferentially about of annular seal zones have some perforates,
Gas chamber is connected by perforate with furnace chamber after first waste gas chamber and the first purification；
Second annular seal zones are provided with corresponding with the first waste gas chamber and connection the second waste gas chamber, after the first purification
Gas chamber is corresponding and the second purification of connection after gas chamber, after the second waste gas chamber purifies with second gas chamber mutually every
Absolutely, and valve housing (1) to should the provided circumferentially about of annular seal zones have some perforates, the second waste gas chamber by perforate with
Pending waste gas chamber, gas chamber completely cuts off with pending waste gas chamber after the second purification；
Also include the air-out cavity (13) being connected with valve housing (1) lower end, air-out cavity (13) side offers net for discharging
The air outlet (19) of waste gas after change, air-out cavity (13) with second purification after gas chamber connect, and with the second waste gas chamber every
Absolutely.
A kind of 2. reversal valve for rotary regenerative oxidation stove according to claim 1, it is characterised in that valve housing
(1) structure is in cone, and the taper of three-layer sealed ring and valve housing (1) are unanimously, and spring (6), bullet are arranged with support shaft (7)
On bottom sealing ring, end is arranged in support shaft (7) spring (6) apical support.
A kind of 3. reversal valve for rotary regenerative oxidation stove according to claim 2, it is characterised in that spring (6)
Both ends are each provided with a limiting plate, tense the deformation quantity of control spring (6) between two limiting plates by bolt.
A kind of 4. reversal valve for rotary regenerative oxidation stove according to claim 1, it is characterised in that support shaft
(7) end is connected with the reducing motor (18) for providing power by shaft coupling (17).
A kind of 5. reversal valve for rotary regenerative oxidation stove according to claim 1, it is characterised in that support shaft
(7) hypomere offers purging wind inlet, the purging air intake cavity (8) of cladding purging wind inlet is provided with, by being pressed on sealing ring
Lid (9) and sealing ring lower cover (10) will purge wind sealing and be pressed between purging air intake cavity (8) and support shaft (7)；It is purged into
The intake stack of wind cavity (8) stretches out air-out cavity (13) and is used to access purging wind.
6. a kind of reversal valve for rotary regenerative oxidation stove according to claim 1, it is characterised in that sealing ring
Sealing device is provided between periphery and valve housing (1), sealing device includes the annular backing plate being arranged on sealing ring circumference
(4) and it is fixed on the O-ring seal (5) contacted on annular backing plate (4) with valve housing (1) medial surface.
A kind of 7. reversal valve for rotary regenerative oxidation stove according to claim 1, it is characterised in that valve body (3)
Rotation direction be to point to the first discarded chamber from purging chamber, and furnace chamber with the level position of first annular sealing area
Some air chambers are provided with, air chamber is provided with opening close to one end of valve body, and air chamber A/F is less than purging wind chamber air-out
A/F at mouthful.
A kind of 8. reversal valve for rotary regenerative oxidation stove according to claim 1, it is characterised in that valve housing
(1) radial clearance seals structure is additionally provided between valve body (3), including is arranged on the radial plate (20) of valve body (3) outer wall, with
And the pressing plate (22) being fastened by bolts with radial plate (20), being compressed between radial plate (20) and pressing plate (22) has apex sealing strip
(21), apex sealing strip (21) is close to the inwall of valve housing (1)；Totally two groups of radial clearance seals structure, is distributed in circular section
On 180 ° of directions, every group contains 3~4 seals.
9. a kind of reversal valve for rotary regenerative oxidation stove according to claim 1, it is characterised in that first annular
Sealing area is arranged on the second annular seal zones.
A kind of 10. reversal valve for rotary regenerative oxidation stove according to claim 1, it is characterised in that the first ring
Shape sealing area is arranged under the second annular seal zones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720814023.5U CN207213252U (en) | 2017-07-06 | 2017-07-06 | A kind of reversal valve for rotary regenerative oxidation stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720814023.5U CN207213252U (en) | 2017-07-06 | 2017-07-06 | A kind of reversal valve for rotary regenerative oxidation stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207213252U true CN207213252U (en) | 2018-04-10 |
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ID=61812494
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720814023.5U Active CN207213252U (en) | 2017-07-06 | 2017-07-06 | A kind of reversal valve for rotary regenerative oxidation stove |
Country Status (1)
| Country | Link |
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| CN (1) | CN207213252U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191628A (en) * | 2017-07-06 | 2017-09-22 | 西安昱昌环境科技有限公司 | A kind of reversal valve for rotary regenerative oxidation stove |
-
2017
- 2017-07-06 CN CN201720814023.5U patent/CN207213252U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191628A (en) * | 2017-07-06 | 2017-09-22 | 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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