CN106949488B - Heat accumulation combustion device with efficient sealing rotary reversing valve - Google Patents
Heat accumulation combustion device with efficient sealing rotary reversing valve Download PDFInfo
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- CN106949488B CN106949488B CN201710323121.3A CN201710323121A CN106949488B CN 106949488 B CN106949488 B CN 106949488B CN 201710323121 A CN201710323121 A CN 201710323121A CN 106949488 B CN106949488 B CN 106949488B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/20—Waste heat recuperation using the heat in association with another installation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
A regenerative burner with a high-efficiency sealed rotary-type directional valve, characterized in that it comprises: the combustion device, the rotary reversing valve and the power device; the combustion device comprises a combustion chamber, a heat accumulation layer and a distribution box; the transmission device drives the rotary reversing valve to rotate, and the rotary reversing valve performs wind direction conversion on the supplied and exhausted gas; the rotary valve core of the high-efficiency sealed rotary reversing valve is suspended and rotated with a suspension shaft of the annular gas distribution plate, and the rotary valve core and the annular gas distribution plate adopt a plurality of sealing measures such as a spring plate sealing device, an arc seal and the like, so that the problem of plane leakage of an air inlet chamber of the rotary valve core is solved; the rotary valve core and the annular gas distribution plate are in rotary dynamic seal by adopting a sealing element, and the rotary valve core, the gas inlet box and the gas scavenging box are in sealing by adopting a plurality of sealing measures of sealing rings and flexible sealing sleeves, so that the leakage in the rotating process of the rotary valve core is solved, and the waste gas treatment quality and efficiency are improved to the maximum extent.
Description
Technical Field
The invention relates to a heat accumulating type combustion device with a high-efficiency sealing rotary reversing valve, in particular to the technical field of rotary reversing valves for wind direction conversion of heat accumulating type combustion devices (RTO).
Background
The existing heat accumulating type combustion device (RTO) heats organic waste gas discharged in production through heat accumulating ceramics, the temperature is rapidly increased, under the combustion heating action of gas in a hearth, the temperature reaches 680-1050 ℃, VOCs in the organic waste gas are directly decomposed into carbon dioxide and water vapor at the high temperature to form tasteless high-temperature flue gas, then the flue gas flows through the heat accumulating ceramics with low temperature, a large amount of heat energy is transferred to a heat accumulator from the flue gas to heat organic waste gas to be decomposed of next circulation, the self temperature of the high-temperature flue gas is greatly reduced, and the heat exchange is carried out through a heat recovery system and other media, the temperature of the flue gas is further reduced, and finally the flue gas is discharged to outdoor atmosphere. The method has the advantages of low operating cost, high organic waste gas treatment efficiency, no catalyst poisoning phenomenon and the like, so that the method is adopted for treating VOCs of more international advanced equipment. The Regenerative Thermal Oxidizer (RTO) can be divided into a valve switching type RTO and a valve rotating type RTO, wherein the valve switching type RTO is formed by two or more ceramic packed beds, and the direction of air flow is changed through the switching of valves, so that the aim of preheating VOC waste gas is fulfilled. The rotary RTO device consists of a combustion chamber, a cylindrical ceramic heat storage bed divided into a plurality of independent sections and a rotary steering valve, and the air flow directions of different sections of the ceramic heat storage bed are changed through the rotation of the rotary steering valve, so that VOC waste gas is continuously preheated, and VOC can be removed after the combustion chamber is oxidized and combusted. For the valve switching formula RTO device, the rotation type RTO device is because only a moving part (rotation type steering valve case), so the operation is more reliable, convenient, but the defect is that the rotary valve is difficult sealed, the purification rate of the big direct influence VOC of volume of revealing of waste gas. In order to improve the defects of the existing rotary RTO device, the defects can be solved only by improving the structure and the sealing of the rotary steering valve.
Disclosure of Invention
The invention aims to provide a heat storage combustion device with a high-efficiency sealing rotary reversing valve, which overcomes the defects that a rotary valve is not easy to seal and the VOC purification rate is influenced by large leakage of waste gas by improving the structure and the sealing structure of the rotary reversing valve, and greatly improves the waste gas purification quality and efficiency of the heat storage combustion device.
In view of the above technical problems, the present invention provides a regenerative combustion apparatus having a high-efficiency sealing rotary-type reversing valve, the regenerative combustion apparatus comprising: the combustion device, the rotary reversing valve and the power device; the combustion device comprises a combustion chamber, a heat accumulation layer and a distribution box. Rotation type switching-over valve carries out the wind direction conversion to air feed and carminative gas, and power device drives rotation type switching-over valve and rotates, its characterized in that rotation type switching-over valve includes: valve casing, inlet box, scavenging case, transmission, annular minute gas board and rotatory case. The cylindrical wall surface of the valve shell is provided with an air outlet which is connected with an exhaust pipe. The inside at the valve casing is installed to the air inlet box, and the bottom of this air inlet box and the diapire face reciprocal anchorage of valve casing open on the cylinder pipe wall of this air inlet box has the air inlet, is connected with the intake pipe on the air inlet, and the cylinder wall of valve casing is passed to the pipe wall of this intake pipe. The scavenging box is arranged in the air inlet box, the wall surface of the scavenging box is provided with a scavenging port, the scavenging port is connected with a scavenging pipe, and the pipe wall of the scavenging pipe penetrates through the cylindrical wall surface of the valve shell and the cylindrical pipe wall of the air inlet box. An upper transmission shaft of the transmission device is arranged in a bearing seat at the top of the scavenging air box, a lower transmission shaft of the transmission device is arranged in a bearing seat at the bottom of the scavenging air box, and the upper transmission shaft and the lower transmission shaft are mutually connected through a coupler. And a scavenging flow passage is arranged on the outer side of the bearing seat at the top of the scavenging box. The annular central body and the outer annular body of the annular gas distribution plate are connected with each other through N partition plates which are uniformly distributed in an annular shape to divide the interior of the annular gas distribution plate into N fan-shaped gas flow channels; the bottom of the distribution box is fixedly arranged with the upper part of the annular gas distribution plate. The lower end of the circular central body of the annular gas distribution plate is provided with a fixed suspension shaft. The center part of the upper end surface of the rotary distributing plate of the rotary valve core is provided with a shaft hole, the lower end surface of the rotary distributing plate is provided with an upper bearing seat, and the upper bearing seat is arranged in the scavenging cylinder; the fixed suspension shaft passes through the shaft hole and is installed in the upper bearing seat. An upper transmission shaft of the transmission device is arranged in a lower bearing seat at the bottom of the scavenging barrel, and a vent hole is formed in the outer side of the lower bearing seat at the bottom of the scavenging barrel. The rotary valve core rotates, and the upper plane of the rotary distribution plate is in contact rotation with the lower end wall surface of the annular gas distribution plate. The fan-shaped scavenging air box and the fan-shaped dead zone box are symmetrically fixed on two sides of the scavenging air cylinder, and the fan-shaped scavenging air box and the fan-shaped dead zone box separate the rotary valve core into an air inlet chamber and an air outlet chamber; the wall surface of the fan-shaped scavenging air box is provided with an air blowing opening. The outer side of the air inlet ring at the lower end of the air inlet chamber is sleeved with a sealing ring, and the lower end of the sealing ring is fixedly installed with the top of the air inlet box; an annular sealing element is arranged between the air inlet ring and the sealing ring. A sealing ring sleeve is arranged on the outer side of the rotating ring at the bottom of the scavenging barrel, the bottom of the sealing ring sleeve and the top of the scavenging box are fixedly arranged with each other, and a sealing ring is arranged in the sealing ring sleeve.
The invention is further improved, and the adopted preferable technical measures are as follows: and an adjusting nut is arranged on a lead screw at the lower end of the fixed suspension shaft, an elastic piece is arranged between the adjusting nut and the bottom of the upper bearing seat, and the elastic piece elastically jacks up the upper bearing seat of the rotary valve core under the adjusting action of the adjusting nut. The upper end surface of the rotary valve core rotary distribution plate is tightly attached to the lower end wall surface of the annular gas distribution plate under the elastic action of the elastic piece.
The invention is further improved, and the adopted preferable technical measures are as follows: the outer ring surface of the rotary distribution plate is provided with an outer ring groove, an outer sealing element is arranged in the outer ring groove, and the outer sealing element is in contact with the lower wall surface of the outer ring surface of the annular gas distribution plate for touch sealing. The upper wall surface of the central part of the rotary distribution plate is provided with an inner annular groove, an inner sealing element is arranged in the inner annular groove, and the inner sealing element is in contact dynamic seal with the lower wall end surface of the annular central body of the annular gas distribution plate.
The invention is further improved, and the adopted preferable technical measures are as follows: the side of the annular gas distribution plate partition plate is provided with an elastic sheet sealing device, the outer side of an elastic sheet of the elastic sheet sealing device is provided with a baffle, the elastic sheet and the baffle are fixed on the side of the partition plate through bolts, and the inner side of the elastic sheet is contacted with the side of a support plate at the bottom of the partition plate. The rotary valve core rotates, and the elastic sheet is respectively contacted with the upper wall surfaces of the fan-shaped air sweeping box and the fan-shaped blind area box.
The invention is further improved, and the adopted preferable technical measures are as follows: the height of the bottom supporting plate of the partition plate is lower than that of the circular ring central body and the outer ring body, an outer arc-shaped sealing element is fixedly installed on the inner side of the arc-shaped plate surface outside the air inlet chamber of the rotary distribution plate, and the outer arc-shaped sealing element is fixed on the inner side wall surface of the outer arc-shaped plate surface through bolts. An inner arc-shaped sealing element is fixedly arranged on the outer side of the arc-shaped plate surface in the air inlet chamber of the rotary distribution plate, and the inner arc-shaped sealing element is fixed on the outer side wall surface of the inner arc-shaped plate surface through bolts.
The invention is further improved, and the adopted preferable technical measures are as follows: the lower part of the outer arc-shaped plate surface of the rotary distribution plate air inlet chamber is provided with an arc-shaped air chamber, a plurality of inner clean air holes are distributed on the arc-shaped surface of the outer arc-shaped plate, the inner clean air holes are communicated with the arc-shaped air chamber, the inner clean air holes are formed between an outer arc-shaped sealing element and an outer annular groove of an outer annular body of the rotary distribution plate, one end of the arc-shaped air chamber is communicated with the fan-shaped scavenging box, and the other end of the arc-shaped air chamber is communicated with the fan-shaped blind area box. Between the inner arc sealing element and the inner annular groove of the arc-shaped plate surface in the air inlet chamber, a plurality of outer clean air holes are distributed in the arc shape, and the outer clean air holes are communicated with the scavenging cylinder.
The invention is further improved, and the adopted preferable technical measures are as follows: and a gravity sealing ring is arranged on the outer side of the air inlet ring at the lower end of the air inlet chamber, a sealing element is arranged in a sealing groove on the lower end surface of the gravity sealing ring, and the sealing element is in plane contact with the ring sleeve of the air inlet box for dynamic sealing.
The invention is further improved, and the adopted preferable technical measures are as follows: the gravity sealing ring is flexibly connected with the air inlet box through a flexible sleeve, one end of the flexible sleeve is sleeved on the outer side of the gravity sealing ring, and the other end of the flexible sleeve is sleeved on the outer side of the air inlet box. The gravity sealing ring is provided with more than one bayonet, a clamping piece is arranged in the bayonet, and the lower end of the clamping piece is fixedly arranged with the air inlet ring. More than one weight is symmetrically arranged on the gravity sealing ring.
The invention is further improved, and the adopted preferable technical measures are as follows: and a gravity sealing ring sleeve is arranged on the outer side of the rotating ring at the bottom of the scavenging barrel, an annular sealing element is arranged in a sealing ring groove on the lower end surface of the bottom of the gravity sealing ring sleeve, and the annular sealing element is in contact with the upper plane of the rotating ring for dynamic sealing.
The invention is further improved, and the adopted preferable technical measures are as follows: the gravity sealing ring sleeve is flexibly connected with the scavenging box through a flexible ring sleeve, one end of the flexible ring sleeve is sleeved on the outer side of the gravity sealing ring sleeve, and the other end of the flexible ring sleeve is sleeved on the outer side of the scavenging box. More than one clamping groove is formed in the gravity sealing ring sleeve, a clamping column is installed in each clamping groove, and the lower end of the clamping column is fixedly installed with the scavenging box.
Advantageous effects
Based on the technical scheme, the heat storage combustion device with the high-efficiency sealing rotary reversing valve has at least one of the following beneficial effects:
1. the rotary valve core and the annular gas distribution plate are suspended through a fixed suspension shaft, so that the structure is simple and stable;
2. the upper transmission shaft and the lower transmission shaft of the transmission device are connected through the coupler, so that the problem that the transmission shaft drives the rotary valve core to rotate eccentrically is solved;
3. the upper end surfaces of the rotary valve core and the rotary distribution plate are tightly attached to the lower wall surface of the annular gas distribution plate under the elastic action of the elastic piece, so that the gas leakage is reduced;
4. the rotary valve core and the upper end surface of the rotary distribution plate are in dynamic seal through a sealing element, and the sealing structure is simple and practical;
5. the elastic sheet sealing device arranged on the side surface of the annular gas distribution plate partition plate is used for elastic sheet sealing, so that the problem of leakage between the annular gas distribution plate and two sides of the rotary valve core air inlet chamber is solved;
6. the inner arc-shaped sealing piece which passes through the rotating distribution plate and the arc-shaped plate surface in the air inlet chamber rotates for dynamic sealing, so that the problem of gas leakage outside the air inlet chamber is solved;
7. between the inner arc sealing element and the inner annular groove sealing element of the arc surface in the air inlet chamber of the rotary valve core, a plurality of clean air holes are distributed in an arc shape and communicated with the scavenging cylinder. The air pressure sealing measure is carried out through the clean air holes, so that the air leakage is prevented to the maximum extent;
8. the gravity sealing ring is arranged on the outer side of the air inlet ring at the lower end of the air inlet chamber of the rotary valve core, and is flexibly connected with the air inlet box through the flexible sleeve, so that the sealing effect between the rotary valve core and the air inlet box is improved after the technical measures are taken;
9. and a gravity sealing ring sleeve is arranged on the outer side of the rotating ring at the bottom of the scavenging barrel and is in contact with the upper plane of the scavenging box by utilizing gravity to realize dynamic sealing.
Drawings
Fig. 1 is a schematic view of a regenerative combustion apparatus having a high-efficiency sealing rotary-type reversing valve according to the present invention.
Fig. 2 is a schematic view of the leaf spring sealing device of the present invention.
Fig. 3 is a schematic view of an annular gas distribution plate of the present invention.
Fig. 4 is a cross-sectional view of the rotary valve cartridge of the present invention.
Figure 5 is a cross-sectional view of the high efficiency sealed rotary reversing valve of the present invention.
Fig. 6 is a schematic view of the seal of the rotary valve cartridge of the present invention.
FIG. 7 is a top view of the rotating distributor plate of the present invention.
FIG. 8 is a schematic view of a rotating distributor plate of the present invention with installed arc seals.
FIG. 9 is a cross-sectional view of a rotary valve cartridge of the present invention with an installed arc seal.
FIG. 10 is a schematic view of the installation of the gravity seal ring of the present invention.
Fig. 11 is a schematic view showing the operation of the regenerative combustion apparatus having a high-efficiency sealing rotary direction valve according to the present invention.
Fig. 12 is a top view of the gravity seal ring of the present invention.
Figure 13 is a schematic view of the installation of the gravity seal ring of the present invention.
Figure 14 is a top view of the gravity seal ring of the present invention.
Description of the main assembly symbols
1-a rotary reversing valve; 2-annular gas distribution plate; 3-valve casing; 6, exhausting the pipe; 7-an air inlet box;
11-an air inlet pipe; 17-a scavenging pipe; 20-a combustion device; 21-a power plant; 22-a combustion chamber;
23-a heat storage layer; 24-a distribution box; 30-a transmission; 31-an upper transmission shaft; 33-a lower transmission shaft; 35-a coupler; 37-a circular central body; 38-outer ring body; 39-a divider plate; 40-fan-shaped airflow channels; 41-fixing the suspension shaft; 42-rotary valve core; 43-rotating distributor plate; 46-a scavenging cylinder; 52-sector scavenging air box; 47-fan-shaped dead zone box; 53-an inlet chamber; 54-an exhaust chamber; 55-gas inlet ring; 56-sealing ring; 57-annular seal; 58-a rotating ring; 59-sealing ring sleeve; 62-adjusting the nut; 63-an elastic member; 64-outer annular grooves; 65-outer annular surface; 66-an outer seal; 69-inner annular groove; 70-an inner seal; 72-a leaf spring sealing device; 73-an elastic sheet; 74-a baffle; 75-bolt; 76-a support plate; 77-outer arc plate surface; 78-outer arc seal; 79-inner arc plate surface; 80-inner arc seal; 81-sealing ring; 84-arc shaped air chamber; 85-outer clean air holes; 86-a flexible sealing sleeve; 87-a gravity seal ring; 88-a seal groove; 89-a seal; 90-loop plane; 92-a catch; 93-a weight block; 94-gravity seal collar; 96-sealing ring sleeve; 97-flexible ring sleeve; 99 clamping columns; 101-inner clean air holes.
Detailed Description
In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.
A first embodiment.
As shown in fig. 1, the regenerative thermal combustion apparatus of the regenerative thermal combustion apparatus having a high-efficiency sealing rotary direction valve includes: the combustion device 20, the rotary reversing valve 1 and the power device 21; the combustion apparatus 20 includes a combustion chamber 22, a heat storage layer 23, and a distribution box 24. The rotation type switching-over valve 1 carries out wind direction conversion to air feed and carminative gas, and power device 21 drives rotation type switching-over valve 1 and rotates, and rotation type switching-over valve 1 includes: valve casing 3, inlet box 7, scavenging air case 14, transmission 30, annular gas distribution plate 2 and rotatory case 42. As shown in fig. 1, an exhaust port 5 is opened in the cylindrical wall surface 4 of the valve housing 3, and an exhaust pipe 6 is connected to the exhaust port 5. Air inlet box 7 is installed in the inside of valve casing 3, and the bottom of this air inlet box 7 and the diapire face 8 reciprocal anchorage of valve casing 3 open on the cylindrical pipe wall 9 of this air inlet box 7 has air inlet 10, is connected with intake pipe 11 on the air inlet 10, and the pipe wall 12 of this intake pipe 11 passes cylindrical wall face 4 of valve casing 3. The scavenging air box 14 is arranged in the air inlet box 7, a scavenging air port 16 is arranged on the wall surface 15 of the scavenging air box, a scavenging air pipe 17 is connected with the scavenging air port 16, and the pipe wall 19 of the scavenging air pipe 17 penetrates through the cylindrical wall surface 4 of the valve shell 3 and the cylindrical pipe wall 9 of the air inlet box 7. As shown in fig. 5, the upper transmission shaft 31 of the transmission device 30 is installed in the top bearing seat 32 of the scavenging air box 14, the lower transmission shaft 33 thereof is installed in the bottom bearing seat 34 of the scavenging air box 14, and the upper transmission shaft 31 and the lower transmission shaft 33 are connected with each other through the coupling 35; the scavenging air flow passage 36 is arranged on the outer side of the top bearing seat 32 of the scavenging air box 14. As shown in fig. 3, the annular central body 37 and the outer annular body 38 of the annular gas distribution plate 2 are connected to each other by N partition plates 39, and the N partition plates 39 are uniformly distributed in a ring shape to divide the inside of the annular gas distribution plate 2 into N fan-shaped gas flow passages 40. As shown in fig. 1 and 3, the bottom of the distribution box 24 is fixedly mounted on the upper portion of the annular gas distribution plate 2, and the lower end of the annular central body 37 is mounted with a fixed suspension shaft 41. As shown in fig. 7, the center portion 68 of the upper end surface of the rotary distribution plate 43 of the rotary valve body 42 is provided with a shaft hole 44, and as shown in fig. 5, the lower end surface of the rotary distribution plate 43 is provided with an upper bearing seat 45, and the upper bearing seat 45 is mounted inside the scavenging cylinder 46. As shown in FIG. 5, the upper transmission shaft 31 of the transmission device 30 is mounted in a lower bearing seat 48 at the bottom of the scavenging cylinder 46, and a vent hole 60 is opened at the outer side of the lower bearing seat 48 at the bottom of the scavenging cylinder 46. The fixed hanger shaft 41 is installed in the upper bearing housing 45 through the shaft hole 44. As shown in fig. 7 and 8, the fan-shaped scavenging air box 52 and the fan-shaped dead zone box 47 are symmetrically fixed on both sides of the scavenging air cylinder 46, the fan-shaped scavenging air box 52 and the fan-shaped dead zone box 47 separate the rotary valve core 42 into an air inlet chamber 53 and an air outlet chamber 54, and the wall surface of the fan-shaped scavenging air box 52 is provided with an air blowing opening 100. As shown in fig. 4, a sealing ring 56 is sleeved outside an intake ring 55 at the lower end of the intake chamber 53, the lower end of the sealing ring 56 is fixedly mounted on the top of the intake box 7, and an annular sealing member 57 is mounted between the intake ring 55 and the sealing ring 56. As shown in fig. 4, a sealing ring sleeve 59 is installed outside the rotating ring 58 at the bottom of the scavenging cylinder 46, the bottom of the sealing ring sleeve 59 and the top of the scavenging air box 14 are fixedly installed with each other, and a sealing ring 81 is installed in the sealing ring sleeve 59.
As shown in fig. 11, the exhaust gas 110 enters the inlet tank 4 of the rotary valve core 42 from the inlet pipe, and enters the distribution tank 24 through the fan-shaped gas flow passage 40 of the annular gas distribution plate 2 under the rotation action of the rotary valve core 42; the waste gas 110 is distributed by the distribution box 24, enters the heat storage layer 23 in the sub-chambers, is heated and then enters the combustion chamber 22 for incineration. The burned high-temperature clean waste gas 120 is cooled by the heat storage layer 23, the temperature of the high-temperature clean waste gas 120 is reduced after entering the distributor box 24 and the fan-shaped airflow channel 40, and the cooled clean waste gas 120 enters the valve housing 3 and is discharged through the exhaust pipe 6. The air pressure of the clean air 130 is greater than that of the exhaust gas 110, and the clean air 130 enters the scavenging air box 14 from the scavenging air pipe 17 and enters the scavenging air cylinder 46 of the rotary valve core 42 through the scavenging air flow passage 36 at the top of the scavenging air box 14; the clean air 130 in the scavenging cylinder 46 blows the exhaust gas 110 remaining in the distributor box 24 and the heat storage layer 23 from the blowing port 100 of the fan-shaped scavenging box 52 into the combustion chamber 22 for incineration.
Thus, the first embodiment of the present invention has been described with respect to a regenerative burner having a high efficiency sealed rotary-type directional valve.
Second, second embodiment.
The waste gas treatment quality and efficiency of the regenerative burner are related to the leakage value of the rotary reversing valve, and according to the first embodiment, the rotary reversing valve 1 also has the leakage between the rotary distributing plate 43 and the annular distributing plate 2, and various sealing technical measures must be taken for improvement.
As shown in fig. 4, an adjusting nut 62 is mounted on a lower end screw 61 of the fixed suspension shaft 41, an elastic member 63 is mounted between the adjusting nut 62 and the bottom of the upper bearing seat 45, the elastic member 63 elastically pushes up the rotary valve core 42 under the adjusting action of the adjusting nut 62, and the upper end surface of the rotary distribution plate 43 of the rotary valve core 42 is tightly attached to the lower end wall surface 51 of the annular gas distribution plate 2 under the elastic force of the elastic member 63. As shown in fig. 5, the rotary valve body 42 rotates, and the upper flat surface 49 of the rotary distribution plate 43 rotates in contact with the lower end wall surface 51 of the annular gas distribution plate 2.
As shown in fig. 6 and 8, an outer annular groove 64 is formed in an outer annular surface 65 of the rotary distribution plate 43, an outer seal member 66 is installed in the outer annular groove 64, and the outer seal member 66 is in contact with and seals against a lower wall surface 67 of the outer annular surface 65 of the annular gas distribution plate 2. An inner annular groove 69 is formed on the upper wall surface of the central part 6 of the rotary distribution plate 43, an inner sealing member 70 is arranged in the inner annular groove 69, and the inner sealing member 70 is in contact dynamic sealing with the lower wall end surface 71 of the annular central body 37 of the annular gas distribution plate 2.
As shown in fig. 2, the elastic sheet sealing device 72 is installed on the side surface of the partition plate 39 of the annular gas distribution plate 2, the baffle plate 74 is installed on the outer side of the elastic sheet 73 of the elastic sheet sealing device 72, the elastic sheet 73 and the baffle plate 74 are fixed on the side surface of the partition plate 39 through the bolt 75, and the inner side of the elastic sheet 73 is in contact with the side surface of the bottom support plate 76 of the partition plate 39. The rotary valve core 42 rotates, and the elastic pieces 73 are respectively contacted and sealed with the upper wall surfaces of the fan-shaped scavenging air box 52 and the fan-shaped blind area box 47.
As shown in FIG. 9, the bottom support plate 76 of the partition plate 39 is lower than the annular central body 37 and the outer annular body 38, the inner side of the outer arc-shaped plate surface 77 of the inlet chamber 53 of the rotary distribution plate 43 is fixedly provided with an outer arc-shaped sealing member 78, and the outer side of the inner arc-shaped plate surface 79 of the inlet chamber 53 of the rotary distribution plate 43 is fixedly provided with an inner arc-shaped sealing member 80. The outer arcuate seal 78 is bolted to the inner sidewall surface of the outer arcuate panel surface 77. The inner arcuate seal 80 is bolted to the outer side wall of the inner arcuate panel 79.
As shown in fig. 9, an arc-shaped air chamber 84 is installed below the outer arc-shaped plate surface 77 of the air inlet chamber 53 of the rotating distribution plate 43, a plurality of outer cleaning air holes 85 are distributed in the arc-shaped surface 77, the outer cleaning air holes 85 are communicated with the arc-shaped air chamber 84, and the outer cleaning air holes 85 are opened between the outer arc-shaped sealing member 78 and the outer annular groove 64 of the outer annular surface 65 of the rotating distribution plate 43; one end of the arc air chamber 84 is communicated with the fan-shaped scavenging air box 52, and the other end is communicated with the fan-shaped blind area box 47. A plurality of inner clean air holes 101 are distributed between the inner arc sealing element 80 of the inner arc plate surface 79 of the air inlet chamber 53 and the inner annular groove 69 in an arc shape, and the inner clean air holes 101 are communicated with the scavenging cylinder 46.
Of course, the seal of the high-efficiency sealing rotary reversing valve of the invention also comprises other structures according to actual needs, and the details are not repeated since the seal is irrelevant to the innovation of the invention. For the purpose of brief description, any technical features of the first embodiment that can be applied to the same are described herein, and the same description is not repeated.
Thus, the second embodiment of the present invention has been described in terms of an example of a sealing technique for efficiently sealing a rotary reversing valve.
Third, third embodiment.
According to the first embodiment, the rotary direction valve 1 also has leakage between the inlet ring 55 of the rotary spool 42 and the inlet tank 7, which must be improved.
As shown in fig. 10, a gravity seal ring 87 is installed outside the air inlet ring 55 at the lower end of the air inlet chamber 53, a seal 89 is installed in a seal groove 88 at the lower end surface of the gravity seal ring 87, and the gravity seal 89 is in contact with a ring sleeve plane 90 of the air inlet ring 55 for dynamic sealing. The gravity sealing ring 87 is flexibly connected with the air inlet box 7 through a flexible sleeve 86, one end of the flexible sleeve 86 is sleeved on the outer side of the sealing ring 56, and the other end of the flexible sleeve 86 is sleeved on the outer side of the air inlet box 7. As shown in fig. 12, the gravity seal ring 87 is provided with more than one bayonet 91, a clamping piece 92 is installed in the bayonet 91, and the lower end of the clamping piece 92 is fixedly installed with the air inlet box 7; more than one weight 93 is symmetrically arranged on the gravity sealing ring 87.
Thus, the third embodiment of the present invention is described in terms of a sealing technique for efficiently sealing a rotary reversing valve.
Fourth, a fourth embodiment.
According to the first embodiment, the rotary change valve 1 also has leakage between the scavenging cylinder 46 and the scavenging gas tank 14 of the rotary spool 42, and needs to be improved.
As shown in fig. 13, a gravity seal ring 94 is mounted on the outside of the rotating ring 58 at the bottom of the scavenging cylinder 46, and an annular seal 96 is mounted in a seal ring groove 95 at the bottom lower end face of the gravity seal ring 94, and the annular seal 96 is in contact with and dynamic seal with the upper plane of the rotating ring 58. The gravity sealing ring sleeve 94 is flexibly connected with the scavenging air box 14 through a flexible ring sleeve 97, one end of the flexible ring sleeve 97 is sleeved outside the gravity sealing ring sleeve 94, and the other end is sleeved outside the scavenging air box 14; as shown in fig. 14, the gravity seal ring 94 is provided with more than one locking groove 98, a locking post 99 is installed in the locking groove 98, and the lower end of the locking post 99 is fixedly installed with the scavenging air box 14.
Thus, the fourth embodiment of the present invention has been described in terms of an example of a sealing technique for efficiently sealing a rotary reversing valve.
It should also be noted that directional terms, such as "upper", "lower", "inner", "outer", "left", "right", etc., used in the embodiments are only directions referring to the drawings, and are not intended to limit the scope of the present invention. Further, unless steps are specifically described or must occur in sequence, the order of the steps is not limited to that listed above and may be changed or rearranged as desired by the desired design. The embodiments described above may be mixed and matched with each other or with other embodiments based on design and reliability considerations, i.e., technical features in different embodiments may be freely combined to form further embodiments.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A regenerative combustion device having a high efficiency sealed rotary reversing valve, the regenerative combustion device comprising: the device comprises a combustion device (20), a rotary reversing valve (1) and a power device (21), wherein the combustion device (20) comprises a combustion chamber (22), a heat storage layer (23) and a distribution box (24); rotation type switching-over valve (1) carries out the wind direction conversion to air feed and carminative gas, power device (21) drive rotation type switching-over valve (1) and rotate, its characterized in that includes:
the valve comprises a valve shell (3), wherein a cylindrical wall surface (4) of the valve shell is provided with an exhaust port (5), and the exhaust port (5) is connected with an exhaust pipe (6);
the air inlet box (7) is arranged in the valve shell (3), the bottom of the air inlet box is mutually fixed with the bottom wall surface (8) of the valve shell (3), and an air inlet (10) is formed in the cylindrical pipe wall (9) of the air inlet box; the air inlet (10) is connected with an air inlet pipe (11), and a pipe wall (12) of the air inlet pipe (11) penetrates through a cylindrical wall surface (4) of the valve casing (3);
a scavenging tank (14) which is installed inside the intake tank (7) and has a scavenging port (16) opened in a wall surface (15); the scavenging port (16) is connected with a scavenging pipe (17), and the pipe wall (19) of the scavenging pipe (17) penetrates through the cylindrical wall surface (4) of the valve casing (3) and the cylindrical pipe wall (9) of the air inlet box (7);
the upper transmission shaft (31) of the transmission device (30) is arranged in a top bearing seat (32) of the scavenging air box (14), the lower transmission shaft (33) of the transmission device is arranged in a bottom bearing seat (34) of the scavenging air box (14), and the upper transmission shaft (31) and the lower transmission shaft (33) are connected with each other through a coupler (35); a scavenging flow passage (36) is formed on the outer side of a top bearing seat (32) of the scavenging air box (14);
the annular gas distribution plate (2) is characterized in that a circular central body (37) and an outer ring body (38) of the annular gas distribution plate are connected with each other through N partition plates (39), the N partition plates (39) are uniformly distributed in an annular shape, and the inside of the annular gas distribution plate (2) is divided into a plurality of fan-shaped gas flow channels (40); the bottom of the distribution box (24) is fixedly arranged with the upper part of the annular gas distribution plate (2), and the lower end of the circular central body (37) is provided with a fixed suspension shaft (41);
the rotary valve core (42) is provided with a shaft hole (44) in the central part (68) of the upper end surface of the rotary distributing plate (43), an upper bearing seat (45) is installed on the lower end surface of the rotary distributing plate (43), and the upper bearing seat (45) is installed inside the scavenging cylinder (46); the fixed suspension shaft (41) passes through the shaft hole (44) and is installed in the upper bearing seat (45); an upper transmission shaft (31) of the transmission device (30) is arranged in a lower bearing seat (48) at the bottom of the air sweeping cylinder (46), and an air vent (60) is formed in the outer side of the lower bearing seat (48) at the bottom of the air sweeping cylinder (46); the rotary valve core (42) rotates, and the upper plane (49) of the rotary distribution plate (43) is in contact rotation with the lower end wall surface (51) of the annular gas distribution plate (2); the fan-shaped scavenging air box (52) and the fan-shaped dead zone box (47) are symmetrically fixed at two sides of the scavenging air cylinder (46), the fan-shaped scavenging air box (52) and the fan-shaped dead zone box (47) separate the rotary valve core (42) to form an air inlet chamber (53) and an air outlet chamber (54), and the wall surface of the fan-shaped scavenging air box (52) is provided with an air blowing opening (100); a sealing ring (56) is sleeved outside an air inlet ring (55) at the lower end of the air inlet chamber (53), the lower end of the sealing ring (56) is fixedly installed with the top of the air inlet box (7), and an annular sealing element (57) is installed between the air inlet ring (55) and the sealing ring (56); and a sealing ring sleeve (59) is arranged on the outer side of the rotating ring (58) at the bottom of the scavenging cylinder (46), the bottom of the sealing ring sleeve (59) and the top of the scavenging air box (14) are fixedly arranged with each other, and a sealing ring (81) is arranged in the sealing ring sleeve (59).
2. The regenerative combustion apparatus having a high-efficiency sealing rotary-type reversing valve according to claim 1, characterized in that: an adjusting nut (62) is mounted on a lower end screw rod (61) of the fixed suspension shaft (41), an elastic piece (63) is mounted between the adjusting nut (62) and the bottom of the upper bearing seat (45), the elastic piece (63) elastically jacks up the upper bearing seat (45) of the rotary valve core (42) under the adjusting action of the adjusting nut (62), and the upper end face of a rotary distribution plate (43) of the rotary valve core (42) is tightly attached to the lower end wall face (51) of the annular gas distribution plate (2) under the elastic action of the elastic piece (63).
3. The regenerative combustion apparatus having a high-efficiency sealing rotary-type reversing valve according to claim 1 or 2, characterized in that: an outer annular groove (64) is formed in the outer annular surface (65) of the rotary distribution plate (43), and an outer sealing element (66) is mounted in the outer annular groove (64); the outer sealing element (66) is in contact with the lower wall surface (67) of the outer ring body (38) of the annular gas distribution plate (2) for dynamic sealing; an inner annular groove (69) is formed in the upper wall surface of the central portion (68) of the rotary distribution plate (43), an inner sealing piece (70) is installed in the inner annular groove (69), and the inner sealing piece (70) is in contact dynamic sealing with the lower wall end face (71) of the annular central body (37) of the annular gas distribution plate (2).
4. The regenerative combustion apparatus having a high-efficiency sealing rotary-type reversing valve according to claim 3, characterized in that: an elastic piece sealing device (72) is installed on the side face of the partition plate (39) of the annular gas distribution plate (2), a baffle (74) is installed on the outer side of an elastic piece (73) of the elastic piece sealing device (72), the elastic piece (73) and the baffle (74) are fixed on the side face of the partition plate (39) through a bolt (75), and the inner side of the elastic piece (73) is in contact with the side face of a support plate (76) at the bottom of the partition plate (39); the rotary valve core (42) rotates, and the elastic pieces (73) are respectively in contact sealing with the upper wall surfaces of the fan-shaped scavenging air box (52) and the fan-shaped blind area box (47).
5. The regenerative combustion apparatus having a high-efficiency sealing rotary-type reversing valve according to claim 4, characterized in that: the height of a supporting plate (76) at the bottom of the partition plate (39) is lower than that of the circular ring central body (37) and the outer ring body (38), an outer arc-shaped sealing element (78) is fixedly installed on the inner side of an outer arc-shaped plate surface (77) of the air inlet chamber (53) of the rotary distribution plate (43), and the outer arc-shaped sealing element (78) is fixed on the inner side wall surface of the outer arc-shaped plate surface (77) through bolts; the outer side of an inner arc-shaped plate surface (79) of the air inlet chamber (53) of the rotary distribution plate (43) is fixedly provided with an inner arc-shaped sealing element (80), and the inner arc-shaped sealing element (80) is fixed on the outer side wall surface of the inner arc-shaped plate surface (79) through bolts.
6. The regenerative combustion apparatus having a high-efficiency sealing rotary-type reversing valve according to claim 5, characterized in that: an arc-shaped air chamber (84) is arranged at the lower part of an outer arc-shaped plate surface (77) of the air inlet chamber (53) of the rotary distribution plate (43), a plurality of outer clean air holes (85) are distributed on the outer arc-shaped plate surface (77) in an arc shape, the outer clean air holes (85) are communicated with the arc-shaped air chamber (84), the outer clean air holes (85) are arranged between an outer arc-shaped sealing element (78) and an outer annular groove (64) of an outer annular surface (65) of the rotary distribution plate (43), one end of the arc-shaped air chamber (84) is communicated with the fan-shaped air sweeping box (52), and the other end of the arc-shaped air chamber (84) is communicated with the fan-shaped blind zone box (47); a plurality of inner clean air holes (101) are distributed between the inner arc sealing element (80) of the inner arc plate surface (79) of the air inlet chamber (53) and the inner annular groove (69) in an arc mode, and the inner clean air holes (101) are communicated with the scavenging cylinder (46).
7. The regenerative combustion apparatus having a high-efficiency sealing rotary-type reversing valve according to claim 1, characterized in that: gravity sealing ring (87) are installed in air inlet chamber (53) lower extreme air inlet ring (55) outside, install sealing member (89) in seal groove (88) of terminal surface under gravity sealing ring (87), sealing member (89) and the ring cover plane (90) contact dynamic seal of air inlet ring (55).
8. The regenerative combustion apparatus having a high-efficiency sealing rotary-type reversing valve according to claim 7, wherein: the gravity sealing ring (87) is flexibly connected with the air inlet box (7) through a flexible sleeve (86), one end of the flexible sleeve (86) is sleeved on the outer side of the gravity sealing ring (87), and the other end of the flexible sleeve is sleeved on the outer side of the air inlet box (7); more than one bayonet (91) is arranged on the gravity sealing ring (87), a clamping piece (92) is arranged in the bayonet (91), and the lower end of the clamping piece (92) is fixedly arranged with the air inlet box (7); more than one weight (93) is symmetrically arranged on the gravity sealing ring (87).
9. The regenerative combustion apparatus having a high-efficiency sealing rotary type direction changing valve as claimed in claim 1, wherein: the outer side of the rotating ring (58) at the bottom of the scavenging cylinder (46) is provided with a gravity seal ring sleeve (94), an annular sealing element (96) is arranged in a seal ring groove (95) at the lower end face of the bottom of the gravity seal ring sleeve (94), and the annular sealing element (96) is in contact dynamic seal with the upper plane of the rotating ring (58).
10. The regenerative combustion apparatus having a high-efficiency sealing rotary-type reversing valve according to claim 9, characterized in that: the gravity sealing ring sleeve (94) is flexibly connected with the scavenging air box (14) through a flexible ring sleeve (97), one end of the flexible ring sleeve (97) is sleeved on the outer side of the gravity sealing ring sleeve (94), and the other end of the flexible ring sleeve is sleeved on the outer side of the scavenging air box (14); more than one clamping groove (98) is formed in the gravity sealing ring sleeve (94), a clamping column (99) is installed in the clamping groove (98), and the lower end of the clamping column (99) is fixedly installed with the scavenging air box (14).
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| CN201710323121.3A CN106949488B (en) | 2017-05-09 | 2017-05-09 | Heat accumulation combustion device with efficient sealing rotary reversing valve |
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| CN201710323121.3A CN106949488B (en) | 2017-05-09 | 2017-05-09 | Heat accumulation combustion device with efficient sealing rotary reversing valve |
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