Porous medium combustion system capable of reducing stress through multiple times of tempering and machining method of porous medium combustion system

Abstract

The invention relates to the technical field of porous medium combustion, and discloses a porous medium combustion system capable of reducing stress through multiple times of tempering and a machining method thereof.The porous medium combustion system comprises a gas pipe, a gas outlet is formed in one end of the gas pipe, the outer side of the gas pipe is movably sleeved with an outer sleeve, and connecting pipes are fixedly connected to the periphery of the outer sleeve at equal intervals; a porous medium combustion head is installed at one end of the connecting pipe, a supporting shaft is fixedly installed at one end of the outer sleeve, one end of the supporting shaft is rotationally connected with a mounting plate, the outer side of the gas pipe is fixedly sleeved with a supporting plate, and supporting legs are fixedly installed at the two ends of the mounting plate and the two ends of the supporting plate correspondingly. A sliding rod is fixedly installed between the two supporting legs located at the same end, and a clamping rod is arranged between the two sliding rods. By arranging the multiple porous medium combustion heads, replacement is facilitated during use every time, and the situation that the interior and the surface of the combustion head suffer from continuous thermal stress and thermal shock when a single porous medium combustion head is repeatedly used is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of porous medium combustion, and in particular relates to a porous medium combustion system for multiple tempering and stress reduction and a processing method thereof. Background Art

[0002] Porous media burners are important equipment for controlling the combustion process and are usually used in industrial combustion equipment, gas turbines, furnaces and other systems. Through their special structure and materials, they can effectively achieve the mixing of combustion air and fuel, uniform combustion and heat release.

[0003] When a tempering device mainly using a porous medium burner head is used to temper a metal object multiple times to reduce stress, it is necessary to keep the burner head in a constant burning state. This method will lead to faster fuel consumption. When the burner head is shut down for tempering multiple times, it will be repeatedly exposed to high temperatures, which will cause the inside and surface of the burner head to be subjected to continuous thermal stress and thermal shock. These thermal stresses may cause micro cracks or deformation of the material. In view of this, the present invention is proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a porous medium combustion system with multiple tempering and stress reduction and a processing method thereof. By providing multiple porous medium combustion heads, it is convenient to replace them each time they are used, thereby preventing the repeated use of a single porous medium combustion head from causing the interior and surface of the combustion head to be subjected to continuous thermal stress and thermal shock.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A porous medium combustion system with multiple tempering and stress reduction comprises a gas pipe, one end of the gas pipe is provided with an air outlet, an outer sleeve is movably sleeved on the outside of the gas pipe, connecting pipes are fixedly connected at equal intervals around the outer sleeve, a porous medium combustion head is installed on one end of the connecting pipe, a support shaft is fixedly installed on one end of the outer sleeve, a mounting plate is rotatably connected to one end of the support shaft, a support plate is fixedly sleeved on the outside of the gas pipe, support legs are fixedly installed on both ends of the mounting plate and the support plate, a slide rod is fixedly installed between two support legs located at the same end, and a clamping rod is provided between the two slide rods.

[0007] As a preferred embodiment of the present invention, a corrugated plate is fixedly installed at one end of the outer sleeve, and the crests and troughs of the corrugated plate are arranged in eight groups with equal intervals. A movable ring is movably sleeved on the gas pipe, and a fixed plate is fixedly installed at one end of the movable ring, and a roller is installed at one end of the fixed plate, and the roller is in contact with the corrugated plate. A first spring is fixedly installed at one end of the movable ring, and the first spring is movably sleeved on the outside of the gas pipe. A fixed ring is fixedly installed at one end of the first spring, and the fixed ring is fixedly sleeved on the gas pipe.

[0008] As a preferred embodiment of the present invention, sleeves are fixedly installed at both ends of the two clamping rods, and the sleeves are movably sleeved on the sliding rod. One end of the sleeve is rotatably connected to a pull rod, and the bottom of the pull rod is rotatably connected to a movable part, and the bottom of the movable part is movably sleeved on the supporting leg.

[0009] As a preferred embodiment of the present invention, a connecting rod is fixedly installed between the two movable parts near one end of the mounting plate, a pawl is installed on one side of the connecting rod, a torsion spring is installed between the pawl and the connecting rod, the support shaft passes through the mounting plate through a rotating shaft and is fixedly installed with a ratchet, and the ratchet is adapted to the pawl.

[0010] As a preferred embodiment of the present invention, a base plate is fixedly installed at the bottom of the plurality of supporting legs, a connecting piece is fixedly installed between the two movable pieces located at the same end, a positioning rod is movably inserted on the connecting piece, the bottom of the positioning rod is fixedly installed on the top of the base plate, a second spring is movably sleeved on the positioning rod, the second spring is always in a compressed state, a pressure rod is fixedly installed between the two connecting pieces, a fixing rod is fixedly installed on one side of the top of the base plate, the top of the fixing rod is rotatably connected to a pressure plate, and the pressure plate is located on the top of the pressure rod.

[0011] As a preferred embodiment of the present invention, a valve body is installed on one side of the gas pipe, an elliptical disk is installed on the valve body, slide grooves are opened on both sides of the elliptical disk, a limit block is fixedly installed on one side of the support plate, the limit block and the one side of the support plate are movably connected with a plug plate, a baffle is fixedly installed on one end of the plug plate, the cross-section of the baffle is concave, a baffle column is fixedly installed on the inner wall of the baffle, the baffle column is adapted to the slide groove, and a baffle is fixedly installed on the side of the movable part close to the baffle.

[0012] The present invention also discloses a method for processing a porous medium combustion system by multiple tempering and stress reduction. The steps of the method for processing a porous medium combustion system by multiple tempering and stress reduction are as follows:

[0013] S1. When in use, clamp the object on the clamp rod, and the gas enters the top connecting pipe through the gas outlet on the gas pipe, and then enters the top porous medium combustion head to achieve the tempering operation of the object on the clamp rod;

[0014] S2. When the tempering is completed, the object needs to be removed. At this time, the valve body is closed first to disconnect the gas pipe. At this time, the porous medium combustion head is extinguished. At the same time, the valve body rotates to drive the elliptical disk to rotate. The elliptical disk drives the baffle to move through the slide groove and the baffle column, and the baffle is staggered with the block. At this time, the movable part is unlocked;

[0015] S3, step on the pressure plate, the pressure plate drives the pressure rod to descend, the pressure rod drives the connecting parts at both ends to descend and further compress the second spring, the connecting parts descend and drive the movable parts to descend, the movable parts drive the sleeve to open through the pull rod, so that the clamping rod opens, and the object is removed;

[0016] S4, the movable part descends while driving the connecting rod to descend, the connecting rod drives the ratchet to rotate through the pawl, the ratchet drives the outer sleeve to rotate through the supporting shaft, so that the porous medium combustion head is transposed, and the outer sleeve rotates while driving the corrugated plate to rotate, when the roller approaches the crest of the corrugated plate when the corrugated plate rotates, the first spring is compressed, when the crest of the corrugated plate passes over the roller, the elastic force of the first spring pushes the roller and assists the corrugated plate to rotate, so that the roller stops at the trough position, and the corrugated plate rotates forty-five degrees at this time;

[0017] S5. When tempering the object again, step on the pressing plate again, repeat the above process to open the clamping rod and clamp the object, and at the same time, the corrugated plate rotates forty-five degrees again, so that the porous medium burner head can be replaced;

[0018] S6. Open the valve body to make the porous medium combustion head burn. At the same time, the valve body drives the elliptical disk to reset, so that the baffle plate is stuck to the block to prevent accidents caused by accidentally stepping on the pressure plate during the tempering process.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention provides a plurality of porous medium burner heads, which are convenient for replacement each time they are used, and prevents the interior and surface of the burner head from being subjected to continuous thermal stress and thermal shock when a single porous medium burner head is repeatedly used.

[0021] The present invention uses structures such as movable parts and pull rods to open the clamping rod and drive the porous medium combustion head to rotate and change position. At the same time, an elliptical disk and other structures are arranged on the valve body, so that when the valve body is in an open state, the movable parts are locked under the action of the baffle plate and the block to prevent accidents caused by accidentally stepping on the pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1This is a schematic diagram of the overall structure of a porous medium combustion system with multiple tempering and stress reduction according to the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the ratchet wheel of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the pressing plate of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the valve body of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the elliptical disk and the baffle in the separated state of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the first spring of the present invention;

[0028] Figure 7 It is a schematic diagram of the internal structure of the outer sleeve of the present invention.

[0029] In the figure: 1, gas pipe; 2, gas outlet; 3, outer sleeve; 4, connecting pipe; 5, porous medium combustion head; 6, corrugated plate; 7, movable ring; 8, fixed plate; 9, roller; 10, first spring; 11, fixed ring; 12, support shaft; 13, mounting plate; 14, support leg; 15, slide rod; 16, clamp rod; 17, sleeve; 18, pull rod; 19, movable part; 20, connecting rod; 21, pawl; 22, torsion spring; 23, ratchet; 24, supporting plate; 25, limit block; 26, plug plate; 27, baffle; 28, baffle column; 29, valve body; 30, elliptical disk; 31, slide groove; 32, baffle; 33, connecting part; 34, positioning rod; 35, second spring; 36, pressure rod; 37, fixed rod; 38, pressure plate; 39, bottom plate. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0031] Embodiment 1:

[0032] like Figures 1 to 7As shown, a porous medium combustion system with multiple tempering and stress reduction includes a gas pipe 1, one end of the gas pipe 1 is provided with an outlet 2, the outer side of the gas pipe 1 is movably sleeved with an outer sleeve 3, the outer sleeve 3 is fixedly connected with connecting pipes 4 at equal intervals around, one end of the connecting pipe 4 is installed with a porous medium combustion head 5, one end of the outer sleeve 3 is fixedly installed with a support shaft 12, one end of the support shaft 12 is rotatably connected with a mounting plate 13, the outer side of the gas pipe 1 is fixedly sleeved with a support plate 24, both ends of the mounting plate 13 and the support plate 24 are fixedly installed with support legs 14, a slide rod 15 is fixedly installed between the two support legs 14 located at the same end, and a clamping rod 16 is provided between the two slide rods 15.

[0033] like Figure 6 As shown, in a specific embodiment, a corrugated plate 6 is fixedly mounted at one end of the outer sleeve 3, and the crests and troughs of the corrugated plate 6 are arranged in eight groups with equal spacing. A movable ring 7 is movably sleeved on the gas pipe 1, and a fixed plate 8 is fixedly mounted at one end of the movable ring 7, and a roller 9 is mounted at one end of the fixed plate 8, and the roller 9 is in contact with the corrugated plate 6. A first spring 10 is fixedly mounted at one end of the movable ring 7, and the first spring 10 is movably sleeved on the outside of the gas pipe 1, and a fixed ring 11 is fixedly mounted at one end of the first spring 10, and the fixed ring 11 is fixedly sleeved on the gas pipe 1. In this setting, when the roller 9 approaches the crest when the corrugated plate 6 rotates, the first spring 10 is compressed, and when the crest of the corrugated plate 6 passes over the roller 9, the elastic force of the first spring 10 pushes the roller 9 and assists the corrugated plate 6 to rotate, so that the roller 9 stops at the trough position, and the corrugated plate 6 rotates forty-five degrees.

[0034] like Figure 2 As shown, further, sleeves 17 are fixedly installed at both ends of the two clamping rods 16, and the sleeves 17 are movably sleeved on the slide rod 15. One end of the sleeve 17 is rotatably connected to a pull rod 18, and the bottom of the pull rod 18 is rotatably connected to a movable member 19, and the bottom of the movable member 19 is movably sleeved on the support leg 14. In this configuration, the movable member 19 drives the sleeve 17 to open through the pull rod 18, thereby opening the clamping rod 16, so as to remove the object.

[0035] Embodiment 2:

[0036] like Figure 2 As shown, in a specific embodiment, a connecting rod 20 is fixedly installed between two movable members 19 near one end of the mounting plate 13, a ratchet 21 is installed on one side of the connecting rod 20, a torsion spring 22 is installed between the ratchet 21 and the connecting rod 20, and the support shaft 12 passes through the mounting plate 13 through a rotating shaft and is fixedly installed with a ratchet 23, which is adapted to the ratchet 21. In this setting, the movable member 19 drives the connecting rod 20 to descend while driving the connecting rod 20 to descend, the connecting rod 20 drives the ratchet 23 to rotate through the ratchet 21, and the ratchet 23 drives the outer sleeve 3 to rotate through the support shaft 12, thereby changing the position of the porous medium burner head 5.

[0037] like Figure 2 , Figure 3 As shown, further, a bottom plate 39 is fixedly installed at the bottom of the plurality of support legs 14, a connecting member 33 is fixedly installed between the two movable members 19 at the same end, a positioning rod 34 is movably inserted on the connecting member 33, the bottom of the positioning rod 34 is fixedly installed on the top of the bottom plate 39, a second spring 35 is movably sleeved on the positioning rod 34, and the second spring 35 is always in a compressed state, a pressing rod 36 is fixedly installed between the two connecting members 33, a fixing rod 37 is fixedly installed on one side of the top of the bottom plate 39, a pressing plate 38 is rotatably connected to the top of the fixing rod 37, and the pressing plate 38 is located at the top of the pressing rod 36. In this setting, when the pressing plate 38 is stepped on, the pressing plate 38 drives the pressing rod 36 to descend, and the pressing rod 36 drives the connecting members 33 at both ends to descend and further compress the second spring 35, and the connecting member 33 descends while driving the movable member 19 to descend.

[0038] like Figure 4-Figure 6 As shown, further, a valve body 29 is installed on one side of the gas pipe 1, an elliptical disk 30 is installed on the valve body 29, and slide grooves 31 are opened on both sides of the elliptical disk 30, a limit block 25 is fixedly installed on one side of the support plate 24, and the limit block 25 and the one side of the support plate 24 are movably connected with a plug plate 26, and a baffle 27 is fixedly installed at one end of the plug plate 26, and the cross-sectional shape of the baffle 27 is concave, and a baffle column 28 is fixedly installed on the inner wall of the baffle 27, and the baffle column 28 is adapted to the slide groove 31, and a baffle 32 is fixedly installed on one side of the movable part 19 close to the baffle 27. In this setting, when tempering is completed, the object needs to be removed. At this time, the valve body 29 is closed first to disconnect the gas pipe 1. At this time, the porous medium combustion head 5 is extinguished. At the same time, the valve body 29 rotates to drive the elliptical disk 30 to rotate. The elliptical disk 30 drives the baffle 27 to move through the slide groove 31 and the baffle column 28, and the baffle 27 is staggered with the block 32. At this time, the movable part 19 is unlocked. When tempering again, the valve body 29 is opened to make the porous medium combustion head 5 burn. At the same time, the valve body 29 drives the elliptical disk 30 to reset, so that the baffle 27 is stuck with the block 32 to prevent accidents caused by accidentally stepping on the pressure plate 38 during tempering.

[0039] The implementation principle of the porous medium combustion system for multiple tempering and stress reduction of this embodiment is as follows: when in use, the object is clamped on the clamping rod 16, and the gas enters the top connecting pipe 4 through the gas outlet 2 on the gas pipe 1, and then enters the top porous medium combustion head 5, so as to realize the tempering operation of the object on the clamping rod 16;

[0040] When the tempering is completed, the object needs to be removed. At this time, the valve body 29 is closed first to disconnect the gas pipe 1. At this time, the porous medium burner head 5 is extinguished. At the same time, the valve body 29 rotates to drive the elliptical disk 30 to rotate. The elliptical disk 30 drives the baffle 27 to move through the slide groove 31 and the stop column 28, and the baffle 27 is staggered with the stop block 32. At this time, the movable part 19 is unlocked;

[0041] Step on the pressing plate 38, the pressing plate 38 drives the pressing rod 36 to descend, the pressing rod 36 drives the connecting members 33 at both ends to descend and further compress the second spring 35, the connecting member 33 descends and drives the movable member 19 to descend, the movable member 19 drives the sleeve 17 to open through the pull rod 18, so that the clamping rod 16 is opened, so as to remove the object;

[0042] The movable part 19 descends while driving the connecting rod 20 downward. The connecting rod 20 drives the ratchet 23 to rotate through the pawl 21. The ratchet 23 drives the outer sleeve 3 to rotate through the support shaft 12, so that the porous medium combustion head 5 is transposed. The outer sleeve 3 rotates while driving the corrugated plate 6 to rotate. When the corrugated plate 6 rotates, when the roller 9 approaches the wave crest, the first spring 10 is compressed. When the wave crest of the corrugated plate 6 passes over the roller 9, the elastic force of the first spring 10 pushes the roller 9 and assists the corrugated plate 6 to rotate, so that the roller 9 stops at the wave trough position. At this time, the corrugated plate 6 rotates forty-five degrees.

[0043] When the object is tempered again, the pressing plate 38 is stepped on again, and the above process is repeated to open the clamping rod 16 and clamp the object. At the same time, the corrugated plate 6 is rotated forty-five degrees again, so that the porous medium burner head 5 can be replaced. Alternating the burner heads 5 can extend the stoppage time of each burner head, reduce the number of thermal shocks, and extend the service life of the burner head 5.

[0044] The porous medium combustion head 5 can be burned by opening the valve body 29. At the same time, the valve body 29 drives the elliptical disk 30 to reset, so that the baffle 27 can block the block 32 to prevent accidents caused by accidentally stepping on the pressure plate 38 during the tempering process.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A porous medium combustion system with multiple tempering and stress reduction, comprising a gas pipe (1), characterized in that: One end of the gas pipe (1) is provided with a gas outlet (2), the outer side of the gas pipe (1) is movably sleeved with an outer sleeve (3), the outer sleeve (3) is fixedly connected with connecting pipes (4) at equal intervals around, one end of the connecting pipe (4) is installed with a porous medium combustion head (5), one end of the outer sleeve (3) is fixedly installed with a support shaft (12), one end of the support shaft (12) is rotatably connected with a mounting plate (13), the outer side of the gas pipe (1) is fixedly sleeved with a support plate (24), both ends of the mounting plate (13) and the support plate (24) are fixedly installed with support legs (14), a slide rod (15) is fixedly installed between two support legs (14) located at the same end, and a clamping rod (16) is provided between the two slide rods (15).

2. A porous medium combustion system with multiple tempering and stress reduction according to claim 1, characterized in that: A corrugated plate (6) is fixedly mounted on one end of the outer sleeve (3), and the crests and troughs of the corrugated plate (6) are arranged in eight groups with equal spacing. A movable ring (7) is movably sleeved on the gas pipe (1), and a fixed plate (8) is fixedly mounted on one end of the movable ring (7), and a roller (9) is mounted on one end of the fixed plate (8), and the roller (9) and the corrugated plate (6) are in contact with each other. A first spring (10) is fixedly mounted on one end of the movable ring (7), and the first spring (10) is movably sleeved on the outside of the gas pipe (1). A fixed ring (11) is fixedly mounted on one end of the first spring (10), and the fixed ring (11) is fixedly sleeved on the gas pipe (1).

3. The porous medium combustion system with multiple tempering and stress reduction according to claim 1, characterized in that: Both ends of the two clamping rods (16) are fixedly mounted with sleeves (17), the sleeves (17) are movably sleeved on the sliding rod (15), one end of the sleeve (17) is rotatably connected to a pull rod (18), the bottom of the pull rod (18) is rotatably connected to a movable part (19), and the bottom of the movable part (19) is movably sleeved on the supporting leg (14).

4. A porous medium combustion system with multiple tempering and stress reduction according to claim 3, characterized in that: A connecting rod (20) is fixedly installed between two movable parts (19) near one end of the mounting plate (13); a pawl (21) is installed on one side of the connecting rod (20); a torsion spring (22) is installed between the pawl (21) and the connecting rod (20); the support shaft (12) passes through the mounting plate (13) through a rotating shaft and is fixedly installed with a ratchet (23); the ratchet (23) is adapted to the pawl (21).

5. The porous medium combustion system with multiple tempering and stress reduction according to claim 3, characterized in that: A bottom plate (39) is fixedly installed at the bottom of the plurality of support legs (14); a connecting member (33) is fixedly installed between two movable members (19) located at the same end; a positioning rod (34) is movably inserted on the connecting member (33); the bottom of the positioning rod (34) is fixedly installed on the top of the bottom plate (39); a second spring (35) is movably sleeved on the positioning rod (34); the second spring (35) is always in a compressed state; a pressing rod (36) is fixedly installed between the two connecting members (33); a fixing rod (37) is fixedly installed on one side of the top of the bottom plate (39); the top of the fixing rod (37) is rotatably connected to a pressing plate (38); and the pressing plate (38) is located at the top of the pressing rod (36).

6. The porous medium combustion system with multiple tempering and stress reduction according to claim 1, characterized in that: A valve body (29) is installed on one side of the gas pipe (1), an elliptical disc (30) is installed on the valve body (29), and slide grooves (31) are opened on both sides of the elliptical disc (30); a limit block (25) is fixedly installed on one side of the support plate (24); a plug plate (26) is movably inserted between the limit block (25) and one side of the support plate (24); a baffle (27) is fixedly installed on one end of the plug plate (26); the cross-section of the baffle (27) is concave; a baffle column (28) is fixedly installed on the inner wall of the baffle (27); the baffle column (28) is adapted to the slide groove (31); and a baffle (32) is fixedly installed on one side of the movable part (19) close to the baffle (27).

7. A method for processing a porous medium combustion system by multiple tempering and stress reduction, characterized in that: The steps of the processing method of the porous medium combustion system with multiple tempering and stress reduction are as follows: S1. When in use, an object is clamped on the clamping rod (16), and the gas enters the top connecting pipe (4) through the gas outlet (2) on the gas pipe (1), and then enters the top porous medium combustion head (5), thereby realizing the tempering operation of the object on the clamping rod (16); S2. When the tempering is completed, the object needs to be removed. At this time, the valve body (29) is closed first to disconnect the gas pipe (1). At this time, the porous medium burner head (5) is extinguished. At the same time, the valve body (29) rotates to drive the elliptical disk (30) to rotate. The elliptical disk (30) drives the baffle (27) to move through the slide groove (31) and the baffle column (28), and the baffle (27) is staggered with the baffle block (32). At this time, the movable part (19) is unlocked; S3, stepping down the pressure plate (38), the pressure plate (38) drives the pressure rod (36) to descend, the pressure rod (36) drives the connecting pieces (33) at both ends to descend and further compresses the second spring (35), the connecting piece (33) descends and drives the movable piece (19) to descend, the movable piece (19) drives the sleeve (17) to open through the pull rod (18), so that the clamping rod (16) is opened, and the object is removed; S4, the movable part (19) descends while driving the connecting rod (20) to descend, the connecting rod (20) drives the ratchet (23) to rotate through the pawl (21), the ratchet (23) drives the outer sleeve (3) to rotate through the support shaft (12), thereby causing the porous medium combustion head (5) to shift position, the outer sleeve (3) rotates while driving the corrugated plate (6) to rotate, when the corrugated plate (6) rotates and the roller (9) approaches the wave crest, the first spring (10) is compressed, when the wave crest of the corrugated plate (6) passes over the roller (9), the elastic force of the first spring (10) pushes the roller (9) and assists the corrugated plate (6) to rotate, thereby causing the roller (9) to stop at the wave trough position, at which time the corrugated plate (6) rotates forty-five degrees; S5. When the object is tempered again, the pressing plate (38) is stepped on again, and the above process is repeated to open the clamping rod (16) and clamp the object. At the same time, the corrugated plate (6) is rotated forty-five degrees again, so that the porous medium burner head (5) can be replaced; S6. The porous medium combustion head (5) can be burned by opening the valve body (29). At the same time, the valve body (29) drives the elliptical disk (30) to reset, so that the baffle plate (27) is stuck to the block (32), thereby preventing accidents caused by accidentally stepping on the pressure plate (38) during the tempering process.

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