Multi-flame igniter and gasification furnace thereof

Abstract

The utility model relates to a gasification furnace of a multi-flame igniter. The gasification furnace comprises an air mixing pipe, a first connecting seat and a plurality of spraying heads, a mounting groove with an opening in the upper end is formed in the first connecting seat, the air mixing pipe is fixed on the first connecting seat, and a vent hole communicated with the air mixing pipe and the mounting groove is formed in the bottom of the mounting groove; a main air outlet hole and a plurality of auxiliary air outlet holes are formed in each injector head, the plurality of injector heads are directly or indirectly mounted in the mounting groove of the first connecting seat, and after the injector heads are mounted in place, ventilation gaps for communicating the ventilation holes with the main air outlet holes and the auxiliary air outlet holes of the plurality of injector heads are formed between the bottoms of the injector heads and the bottom of the mounting groove. The utility model further provides a multi-flame igniter comprising the gasification furnace. According to the scheme, only one and only one air mixing pipe is connected with the multiple spraying heads, mixed gas enters the multiple spraying heads through the same air mixing pipe, flames of the multiple spraying heads are uniform, and the consistency of the flames is high.

Description

Technical Field

[0001] The utility model relates to the technical field of igniter equipment, in particular to a multi-flame igniter and a gasification furnace thereof. Background Art

[0002] According to the number of flames, direct-charge igniters in the prior art generally include single-fire direct-charge, double-fire direct-charge, triple-fire direct-charge, quad-fire direct-charge and five-fire direct-charge, etc. For a multi-flame direct-charge igniter with more than one flame (single flame), each direct-charge is separately set up in the prior art, and each direct-charge is separately connected to the gas storage part.

[0003] The Chinese utility model patent with publication number CN218269152U discloses a multi-flame mixed igniter in a lighter, which includes a bracket and an air outlet separator installed in the bracket, a combustion ceramic cup and at least one pagoda column installed on the combustion ceramic cup are installed on the upper end of the bracket, and the lower end of the pagoda column is inserted into the air outlet separator. Combined with its embodiment, it can be seen that for the three-fire direct flushing scheme, it uses three pagoda columns to cooperate with the air outlet separator. It can be seen that in this scheme, each direct flush (direct flushing pagoda) is also separately set.

[0004] The prior art multi-flame direct-impulse ignition device with multiple direct-impulse separate arrangements has the following disadvantages:

[0005] (1) The cost of multiple direct-injection pagodas is high, and the production cost of the entire multi-flame igniter is high;

[0006] (2) Each flush head needs to be threadedly fastened to the bracket, and the installation process is relatively complicated. In addition, during the specific assembly, due to the small operating space in the porcelain cup, it is easy to touch the adjacent flush head during the threaded connection step of a single flush head, which is not easy to operate.

[0007] (3) Each pagoda column of the straight-flow pagoda is provided with a silver plate (boosting plate) to achieve boosting. However, due to manufacturing process limitations in the prior art, there are slight differences between the silver plates. This results in that even if the amount of gas entering each straight-flow pagoda through the gas outlet separator is the same, the height and strength of the multiple flames in the multi-flame igniter are uneven due to the differences in the silver plates in the pagoda columns. Summary of the invention

[0008] In order to solve the above problems, the purpose of the utility model is to provide a multi-flame igniter and a gasifier thereof, which connect multiple injection heads through the same direct air mixing tube, so that the flames of each injection head are uniform, and can reduce production costs and simplify the assembly process.

[0009] A gasifier with multiple flame igniters comprises an air mixing tube, a first connecting seat and a plurality of injection heads; a mounting groove with an upper opening is formed on the first connecting seat, the air mixing tube is fixed on the first connecting seat, and an air vent connecting the air mixing tube and the mounting groove is provided at the bottom of the mounting groove; a main air outlet hole and a plurality of auxiliary air outlet holes are provided on the injection head, and the plurality of injection heads are directly or indirectly installed in the mounting groove of the first connecting seat, and after the injection head is installed in place, an air vent gap connecting the air vent and the main air outlet holes and the auxiliary air outlet holes of the plurality of injection heads is formed between the bottom of the injection head and the bottom of the mounting groove.

[0010] Preferably, the ventilation gap includes an air storage chamber, and an air storage chamber is formed at the bottom of the first connecting seat. The air storage chamber is connected to the ventilation hole and the main air outlet holes and auxiliary air outlet holes of multiple injection heads located in the installation groove.

[0011] Preferably, a bottom surface of one side of the bottom of the second mounting seat close to the mounting groove is provided with an air guide channel respectively connected to the main air outlet holes of each injection head thereon.

[0012] Preferably, the plurality of air guiding channels are interconnected and the connection points are located directly above the vent holes.

[0013] Preferably, the air storage chamber formed by the downward depression of the bottom of the mounting groove is a two-layer chamber, specifically, the bottom of the mounting groove is depressed downward to form an upper chamber, the bottom of the upper chamber is further depressed downward to form a lower chamber, and the lower chamber is connected to the vent hole; the projection of the main air outlet of the injector head on the second mounting seat at the bottom of the mounting groove coincides with the lower chamber, and the projection of the auxiliary air outlet at the bottom of the mounting groove coincides with the upper chamber and most of them are located outside the lower chamber.

[0014] Preferably, a second connecting seat is included, and a plurality of injection heads are fixed on the same second connecting seat, and the ventilation gap is defined by the cooperation between the second connecting seat and the bottom of the mounting groove.

[0015] Preferably, the plurality of injection heads are integrally formed with the second connecting seat.

[0016] Preferably, a lifting step is formed in the installation groove, and the bottom of the second connecting seat is limitedly matched with the lifting step, and a gap is formed between the second connecting seat and the bottom of the installation groove as an air storage chamber or a ventilation gap.

[0017] Preferably, the outer diameter of the second connection seat matches the inner diameter of the installation groove, the second connection seat is inserted into the installation groove, and a sealing strip is provided between the outer wall of the second connection seat and the inner wall of the installation groove of the first connection seat.

[0018] Preferably, the first connecting seat and the air mixing tube are an integral structure formed in one piece; or the first connecting seat and the air mixing tube are independent components respectively, and the two are connected to each other.

[0019] Preferably, it comprises a porcelain cup and a metal cup, the porcelain cup is located inside the metal cup, the lower end of the air mixing tube passes through the porcelain cup and the metal cup in sequence downward, and the air mixing tube is threadedly connected to the porcelain cup and / or the metal cup.

[0020] Preferably, it comprises a porcelain cup and a metal cup, the bottom of the porcelain cup is provided with a first through hole for the air mixing tube to pass downward, the outer diameter of the bottom of the first connecting seat is larger than the outer diameter of the first through hole, the bottom surface of the first connecting seat is limitedly matched with the upper end surface of the bottom surface of the porcelain cup; the porcelain cup is located inside the metal cup, the inside of the metal cup is provided with a second positioning step arranged radially, the lower end surface of the bottom surface of the porcelain cup is positioned and matched with the second step, the second positioning step is provided with a second through hole coaxially arranged with the first through hole, the lower part of the air mixing tube passes through the first through hole and the second through hole in sequence, the engaging piece is engaged with the outer wall of the air mixing tube, the outer diameter of the engaging piece is larger than the aperture of the second through hole, the engaging piece is positioned and matched with the lower end surface of the second step surface.

[0021] Preferably, a limiting step is formed on the outer side wall of the air mixing tube, and the engaging member is arranged on the limiting step.

[0022] The object of the present application is also to provide a multi-flame igniter, comprising a gasifier as described in any of the above items.

[0023] Due to the adoption of the above scheme, this application has the following advantages:

[0024] The gasifier is connected to multiple injection heads through only one and only one air mixing tube, and the mixed gas enters the multiple injection heads through the same air mixing tube, so that the flames of the multiple injection heads are uniform and the flames are highly consistent. Moreover, compared with the solution of using multiple independent straight-injection pagodas in the prior art, the number of air mixing tubes and their internal filtering and pressurizing structures is reduced, which can greatly reduce the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of the double-flame gasifier involved in Example 1;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure from another angle;

[0027] Figure 3 for Figure 1 AA section view;

[0028] Figure 4 It is a structural schematic diagram of the injection head and the second connecting seat assembly in Example 1;

[0029] Figure 5 for Figure 4 A schematic diagram of the structure from another angle;

[0030] Figure 6 Schematic diagram of the structure of the first connecting member and the air mixing tube assembly in Example 1;

[0031] Figure 7 It is a cross-sectional view of the double-flame gasifier involved in Example 2 (the engaging parts are not shown);

[0032] Figure 8 Schematic diagram of the bottom structure of the injection head and the second connecting seat assembly in Example 2

[0033] Fig. 9 This is a schematic structural diagram of the first connecting member and the air mixing tube assembly in Example 2.

[0034] Reference numerals:

[0035] Air mixing tube 1, limiting step 11, first connecting seat 2, vent hole 21, lifting step 22, second connecting seat 3, slot 31, injection head 4, main air outlet 41, auxiliary air outlet 42, porcelain cup 5, metal cup 6, snap-fit ​​part 7, sealing strip 8, air storage chamber 91, upper chamber 911, lower chamber 912, air guide channel 92. DETAILED DESCRIPTION

[0036] The embodiments of the present utility model are described in detail below. Example

[0037] This embodiment provides a gasification furnace with a multi-flame igniter, including an air mixing tube 1, a first connecting seat 2 and a plurality of injection heads 4; a mounting groove with an upper opening is formed on the first connecting seat 2, the air mixing tube 1 is fixed on the first connecting seat 2, and an air vent 21 connecting the air mixing tube 1 and the mounting groove is provided at the bottom of the mounting groove; a main air outlet 41 and a plurality of auxiliary air outlets 42 are provided on the injection head 4, and the plurality of injection heads 4 are directly or indirectly installed in the mounting groove of the first connecting seat 2. After the injection head 4 is installed in place, a ventilation gap connecting the through hole and the main air outlet 41 and the auxiliary air outlet 42 of the plurality of injection heads 4 is formed between the bottom of the injection head 4 and the bottom of the mounting groove.

[0038] The air mixing tube 1 is also called a pagoda column or an air outlet pipe in the prior art. The lower end of the air mixing tube 1 is provided with structures such as silver sheets and mesh sheets from top to bottom. The specific settings of the air mixing tube 1 and its interior and the working principle are conventional settings in the art and are not described in detail here. The upper part of the air mixing tube 1 is fixed to the first connecting seat 2, and multiple injection heads 4 are installed in the mounting groove of the same first connecting seat 2, so that one air mixing tube 1 can be connected to multiple injection heads 4 to achieve multi-flame ignition. In one embodiment, the first connecting seat 2 and the air mixing tube 1 are an integral structure formed in one piece, and the first connecting seat 2 and the air mixing tube 1 are integrally processed and cannot be separated from each other. For example, in a specific embodiment, the first connecting seat 2 and the air mixing tube 1 are made of metal materials such as zinc alloy. In this scheme, the first connecting seat 2 and the air mixing tube 1 can be obtained by casting. Such a setting is conducive to simplifying the assembly process and the processing process, and there is no need to process the connection structure of the first connecting seat 2 and the air mixing tube 1. In other embodiments, the first connecting seat 2 and the air mixing tube 1 are independent components, which are interconnected and can be processed independently. For example, in a specific embodiment, the air mixing tube 1 and the first connecting seat 2 can be plug-fitted or threadedly fixed.

[0039] A plurality of injection heads 4 are directly or indirectly installed in the mounting groove of the first connection seat 2. The injection head 4 has a main air outlet 41 located at the center line and a plurality of auxiliary air outlets 42 located in the circumferential direction of the main air outlet 41. The aperture of the main air outlet 41 is larger than the auxiliary air outlet 42. Most of the mixed gas entering from the air mixing pipe 1 enters the main air outlet 41, and a small part enters the auxiliary air outlet 42. An air storage chamber 91 is formed at the bottom of the first connection seat 2. The air storage chamber 91 is connected to the vent 21. The mixed gas entering from the top of the air mixing pipe 1 enters the air storage chamber 91. The main air outlet 41 and the auxiliary air outlet 42 of each injection head 4 installed in the mounting groove are respectively connected to the air storage chamber 91. The mixed air in the air storage chamber 91 enters the main air outlet 41 and the auxiliary air outlet 42 of each injection head 4 in the mounting groove. Therefore, the air storage chamber 91 in this scheme is connected to the air mixing pipe 1 and multiple injection heads 4 on the one hand, and on the other hand, the gas entering the air storage chamber 91 is quickly and evenly separated into the multiple injection heads 4 connected thereto through the air storage chamber 91, so that the flames of each injection head 4 are finally consistent.

[0040] In a preferred embodiment, a second connection seat 3 structure may be provided on the upper portion of the air storage chamber 91, and the ventilation gap or the air storage chamber 91 is defined by the cooperation between the second connection seat 3 and the bottom of the mounting groove, and a plurality of injection heads 4 are fixed on the second connection seat 3. In an optional embodiment, the second connection seat 3 is integrally formed with the mounting groove and is a part of the mounting groove, and the second connection seat 3 is non-detachably provided in the mounting groove.

[0041] In other optional embodiments, the second connecting seat 3 can be a structure independent of the mounting groove, where independence of the mounting groove means that it is independent of each other during production and can be detachably connected to the mounting groove during installation. In this way, the installation of the injection head 4 and the second connecting seat 3 can be completed first during assembly, and then the second connecting seat 3 and the injection head 4 can be installed as a whole on the first connecting seat 2. In a specific embodiment, the second connecting seat 3 and the mounting groove can be snap-fit, and the snap-fit ​​method is suitable for the structure of mounting grooves of various shapes, with strong adaptability and simple assembly. Preferably, in order to ensure the air tightness of the air storage chamber 91, a sealing strip 8 is provided at the connection between the second connecting seat 3 and the mounting groove when a snap-fit ​​connection method is adopted. Further, in order to facilitate the setting of the sealing strip 8, a card slot 31 is provided on the circumferential outer edge of the second connecting seat 3, and the sealing strip 8 is provided in the card slot 31 to prevent the sealing strip 8 from being displaced during the assembly of the second connecting seat 3 to the card slot 31. The sealing strip 8 is made of rubber. After being installed in the slot 31 of the second connection seat 3, the sealing strip 8 partially protrudes from the slot 31. Therefore, after the second connection seat 3 is installed in place, the sealing strip 8 is squeezed between the second connection seat 3 and the side wall of the installation slot to play a sealing role. It is known to those skilled in the art that the sealing strip 8 can also be made of other materials that can achieve the same effect. In other optional embodiments, the second connection seat 3 and the installation slot can also be connected by a common connection structure such as a threaded connection.

[0042] Preferably, a lifting step 22 is formed in the mounting groove, and the second connecting seat 3 is positioned on the step, so that a gap is formed between the second connecting seat 3 and the bottom, and the gap serves as the air storage chamber 91 or the ventilation gap. By providing the step, it is easy to determine the depth of the air storage chamber 91, and it is easy to position the second connecting seat 3 to prevent it from being displaced during use.

[0043] In an optional embodiment, a connection structure for connecting each injection head 4 is provided on the second connection seat 3, and a plurality of independent injection heads 4 are respectively mounted on the second connection seat 3. As another variant, the second connection seat 3 and the plurality of injection heads 4 are integrally formed. Since the injection heads 4 are made of metal materials such as zinc alloy, casting is adopted during production, so it is technically feasible to cast the plurality of injection heads 4 and the second connection seat 3 as one body during production. Such an arrangement is conducive to simplifying the production and installation process, and there is no need to process the connection structure between the second connection seat 3 and the injection head 4, and the integral structure can be directly assembled into the installation groove of the first connection seat 2 during installation.

[0044] Preferably, the ventilation gap further includes an air guide channel 92, through which most of the gas in the gas storage chamber 91 is guided into the main gas outlet 41 of the injection head 4, so as to ensure the flame intensity output by each injection head 4. Specifically, the air guide channel 92 is a channel structure that guides the gas in the gas storage chamber 91 into the main gas outlet 41. This embodiment is described with a dual flame igniter, such as Figure 1 and Figure 2 An optional setting mode is provided, in which a plurality of injection heads 4 are fixed on the second connection seat 3, and a gas guide channel 92 is provided at the bottom of the second mounting seat to connect the main air outlet holes 41 of each injection head 4 thereon, respectively, and the plurality of gas guide channels 92 are connected to each other and the connection point is located directly above the vent hole 21. Thus, most of the mixed gas entering the air storage chamber 91 from the air mixing pipe 1 can enter the main air outlet hole 41 of each injection head 4 through the gas guide channel 92, and the remaining gas enters the auxiliary air outlet hole 42.

[0045] In this embodiment, the ignition device of the multi-flame igniter includes a porcelain cup 5 and a metal cup 6. The structures of the porcelain cup 5 and the metal cup 6 in this embodiment are as shown in the utility model of the patent number 2023230324983 previously applied by the applicant. The bottom of the porcelain cup 5 is provided with a first through hole for the air mixing tube 1 to pass downward, the outer diameter of the bottom of the first connecting seat 2 is larger than the outer diameter of the first through hole, and the bottom surface of the first connecting seat 2 is limitedly matched with the upper end surface of the bottom surface of the porcelain cup 5; the porcelain cup 5 is located inside the metal cup 6, and the inside of the metal cup 6 is provided with a second positioning step arranged radially, and the lower end surface of the bottom surface of the porcelain cup 5 is positioned and matched with the second step, and the second positioning step is provided with a second through hole arranged coaxially with the first through hole, and the lower part of the air mixing tube 1 passes through the first through hole and the second through hole in sequence, and the clamping member 7 is clamped on the outer wall of the air mixing tube 1, and the outer diameter of the clamping member 7 is larger than the aperture of the second through hole, and the clamping member 7 is positioned and matched with the lower end surface of the second step surface. During assembly, first, the assembly between the spray head 4, the first mounting seat and the air mixing tube 1 is completed to obtain the assembly of the spray head 4 and the air mixing tube 1, and then the assembly of the spray head 4 and the air mixing tube 1 is inserted from top to bottom into the first through hole at the bottom of the porcelain cup 5 until the bottom surface of the first mounting seat abuts against the bottom surface of the porcelain cup 5. Then, the assembled assembly of the spray head 4, the first mounting seat, the air mixing tube 1 and the porcelain cup 5 is installed from the upper opening of the metal cup 6, so that the lower part of the air mixing tube 1 extends downward from the second through hole to the bottom of the porcelain cup 5 and abuts against the second positioning step of the metal cup 6, and then the clamping member 7 is installed until the clamping member 7 abuts against the second positioning step from the bottom to lock the position. The above structure is locked from the top by the bottom of the first mounting seat, and locked from the bottom by the clamping member 7, so as to realize the locking of the air mixing tube 1 in the axial position relative to the porcelain cup 5 and the metal cup 6. In this structure, it is not necessary to process the threaded structure on the small parts, and the processing difficulty is small. The components are directly locked by a clamping member 7, and the connection structure is simple. And during assembly, the assembly method of the engaging member 7 is relatively simple. Therefore, the above-mentioned features can improve the assembly efficiency of the gasifier. Further preferably, a limiting step 11 is formed on the outer wall of the air mixing tube 1, and the engaging member 7 is arranged on the limiting step 11. It is convenient to position the engaging member 7 during installation. In a specific embodiment, the engaging member 7 can be a retaining spring.

[0046] Those skilled in the art will appreciate that, in other optional embodiments, the assembly of the spray head 4, the first mounting seat, the air mixing tube 1 and the porcelain cup 5 and / or the metal cup 6 may also be connected by threads. The connection between the spray head 4, the first mounting seat and the air mixing tube 1 may adopt any connection structure in the previous embodiment. Example

[0047] The difference between this embodiment and the first embodiment is that the gas storage chamber 91 formed by the groove bottom of the installation groove being recessed downward is a two-layer chamber, specifically, the groove bottom of the installation groove is recessed downward to form an upper chamber 911, and the bottom of the upper chamber 911 is further recessed downward to form a lower chamber 912, and the lower chamber 912 is connected to the vent hole 21. The projection of the main air outlet hole 41 of the injection head 4 on the second mounting seat at the groove bottom of the installation groove coincides with the lower chamber 912, and the projection of the auxiliary air outlet holes 42 at the groove bottom of the installation groove coincides with the upper chamber 911 and most of them are located outside the lower chamber 912. It should be further explained that the majority here is a relative concept, the number of auxiliary air outlet holes 42 whose projections on the bottom of the mounting groove are located inside the lower chamber 912 is a, and the number of auxiliary air outlet holes 42 whose projections on the bottom of the mounting groove are located outside the lower chamber 912 is b, and a>b; wherein, the projections of the main air outlet holes 41 / auxiliary air outlet holes 42 on the bottom of the mounting groove overlap with the upper chamber 911 / lower chamber 912, which refers to the overlap between the projections when the projection directions of the main air outlet holes 41 / auxiliary air outlet holes 42 and the upper chamber / lower chamber are consistent.

[0048] In this embodiment, an ignition device with a dual flame igniter is used to further illustrate the beneficial effects of the above-mentioned arrangement of the gas storage chamber 91 in this embodiment. Figure 2 As shown, the two injection heads 4 in this embodiment are arranged and fixed in a straight line. The lower mounting groove is also in a straight line, and its front-to-back width is the same as or slightly larger than the diameter of the main air outlet 41. This arrangement allows more mixed gas to be aligned with the main air outlet 41, and the overflowed gas diffuses into the auxiliary air outlet 42 in the upper chamber 911, so that more mixed gas can enter the main air outlet 41 without setting the air guide channel 92 at the bottom of the second mounting seat.

[0049] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A gasifier with multiple flame igniters, characterized in that: It includes an air mixing tube, a first connecting seat and multiple injection heads; a mounting groove with an upper opening is formed on the first connecting seat, the air mixing tube is fixed on the first connecting seat, and an air vent connecting the air mixing tube and the mounting groove is provided at the bottom of the mounting groove; a main air outlet hole and multiple auxiliary air outlet holes are provided on the injection head, and multiple injection heads are directly or indirectly installed in the mounting groove of the first connecting seat. After the injection head is installed in place, a ventilation gap connecting the air vent and the main air outlet holes and auxiliary air outlet holes of multiple injection heads is formed between the bottom of the injection head and the bottom of the mounting groove.

2. The gasifier with multiple flame igniters according to claim 1, characterized in that: The ventilation gap includes an air storage chamber, and the air storage chamber is formed at the bottom of the first connecting seat. The air storage chamber is connected to the ventilation hole and the main air outlet holes and auxiliary air outlet holes of multiple injection heads located in the installation groove.

3. The gasifier with multiple flame igniters according to claim 2, characterized in that: A bottom surface of one side of the bottom of the second mounting seat close to the mounting groove is provided with an air guide channel respectively connected to the main air outlet holes of each injection head thereon.

4. The gasifier with multiple flame igniters according to claim 3, characterized in that: The plurality of air guide channels are interconnected and the connection points are located directly above the vent holes.

5. The gasifier with multiple flame igniters according to claim 3, characterized in that: The air storage chamber formed by the downward depression of the bottom of the mounting groove is a two-layer chamber, specifically, the bottom of the mounting groove is depressed downward to form an upper chamber, the bottom of the upper chamber is further depressed downward to form a lower chamber, and the lower chamber is connected to the vent hole; the projection of the main air outlet of the injector head on the second mounting seat at the bottom of the mounting groove coincides with the lower chamber, and the projection of the auxiliary air outlet at the bottom of the mounting groove coincides with the upper chamber and most of them are located outside the lower chamber.

6. The gasifier according to claim 1, characterized in that: It comprises a second connecting seat, a plurality of injection heads are fixed on the same second connecting seat, and the ventilation gap is defined by the cooperation between the second connecting seat and the bottom of the mounting groove.

7. The gasifier with multiple flame igniters according to claim 6, characterized in that: The plurality of injection heads are integrally formed with the second connection seat.

8. A gasifier with multiple flame igniters according to claim 6 or 7, characterized in that: A lifting step is formed in the installation groove, and the bottom of the second connecting seat is limitedly matched with the lifting step, and a gap is formed between the second connecting seat and the bottom of the installation groove as an air storage chamber or a ventilation gap.

9. The gasifier with multiple flame igniters according to claim 8, characterized in that: The outer diameter of the second connection seat matches the inner diameter of the installation groove, the second connection seat is inserted into the installation groove, and a sealing strip is provided between the outer wall of the second connection seat and the inner wall of the installation groove of the first connection seat.

10. The gasifier with multiple flame igniters according to claim 1, characterized in that: The first connecting seat and the air mixing pipe are an integral structure formed in one piece; or the first connecting seat and the air mixing pipe are independent components respectively, and the two are connected to each other.

11. The gasifier with multiple flame igniters according to claim 1, characterized in that: It comprises a porcelain cup and a metal cup, wherein the porcelain cup is located inside the metal cup, the lower end of the air mixing pipe passes through the porcelain cup and the metal cup in sequence downward, and the air mixing pipe is threadedly connected with the porcelain cup and / or the metal cup.

12. The gasifier with multiple flame igniters according to claim 1, characterized in that: It includes a porcelain cup and a metal cup, the bottom of the porcelain cup is provided with a first through hole for the air mixing pipe to pass downward, the outer diameter of the bottom of the first connecting seat is larger than the outer diameter of the first through hole, and the bottom surface of the first connecting seat is limitedly matched with the upper end surface of the bottom surface of the porcelain cup; the porcelain cup is located inside the metal cup, and a second positioning step arranged radially is provided inside the metal cup, the lower end surface of the bottom surface of the porcelain cup is positioned and matched with the second step, and a second through hole coaxially arranged with the first through hole is provided on the second positioning step, the lower part of the air mixing pipe passes through the first through hole and the second through hole in sequence, the engaging piece is engaged with the outer wall of the air mixing pipe, the outer diameter of the engaging piece is larger than the aperture of the second through hole, and the engaging piece is positioned and matched with the lower end surface of the second step surface.

13. The gasifier with multiple flame igniters according to claim 12, characterized in that: A limiting step is formed on the outer side wall of the air mixing tube, and the engaging member is arranged on the limiting step.

14. A multi-flame igniter, characterized in that: It comprises the gasifier according to any one of claims 1 to 13.

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