Energy-saving oven

Abstract

An energy-saving oven comprises an oven body with a heating cavity formed inside, a fan connected with the air inlet side of a heater, a plurality of hot air partition plates arranged in the heating cavity, the heater arranged at the top of the hot air partition plates, a position adjusting mechanism used for adjusting the positions of the hot air partition plates, an air volume adjusting mechanism used for adjusting the air outlet volume of the hot air partition plates and an automatic air supply mechanism. A product channel is formed between every two adjacent hot air partition plates, each hot air partition plate comprises a partition plate air box and an air baffle arranged on the air outlet side of the partition plate air box, and the box body comprises inner heat preservation plates arranged on the two sides of the heating cavity, outer heat preservation plates arranged on the outer sides of the inner heat preservation plates, bottom assemblies arranged below the hot air partition plates and top assemblies arranged above the hot air partition plates. A heat circulation system is optimized, heating is uniform, efficiency is high, and energy is saved.

Description

Technical Field

[0001] The invention relates to the technical field of industrial heat treatment equipment, and in particular to an oven structure capable of flexibly adjusting hot air distribution and achieving high efficiency and energy saving. Background Art

[0002] Traditional industrial ovens have problems such as uneven hot air distribution, high energy consumption, and poor adjustment flexibility. For example, fixed air ducts are difficult to adapt to products of different sizes, manual adjustment of air volume can easily lead to temperature fluctuations, and the heating tube maintenance requires disassembly of the entire machine, which is inefficient. Although there are some adjustable air duct designs in the prior art, the structure is complex and lacks systematic thermal cycle optimization. Therefore, there is an urgent need for an oven structure that takes into account high efficiency and energy saving, flexible adjustment, and easy maintenance. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an energy-saving oven with an optimized heat circulation system, uniform heating, high efficiency and energy saving.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: an energy-saving oven, comprising a box body with a heating cavity formed inside, a plurality of hot air baffles arranged in the heating cavity, a heater arranged on the top of the hot air baffle, a position adjustment mechanism for adjusting the position of the hot air baffle, an air volume adjustment mechanism for adjusting the air volume of the hot air baffle and an automatic air supply mechanism, a product channel is formed between adjacent hot air baffles, the hot air baffle comprises a baffle air box and a wind shield plate arranged on the air outlet side of the baffle air box, the box body comprises inner insulation plates arranged on both sides of the heating cavity, an outer insulation plate arranged outside the inner insulation plate, a bottom component arranged below the hot air baffle and a top component above the hot air baffle; The air volume adjustment mechanism includes an air duct joint connected to the air outlet side of the heater, an air damper plate arranged in the air duct joint, an adjustment rod that transversely passes through the air duct joint, and a handle assembly arranged at one end of the adjustment rod, the air damper plate is fixedly connected to the adjustment rod, and the adjustment rod is provided with limit rings on both sides of the air duct joint; The position adjustment mechanism includes a width adjustment mechanism and a windshield adjustment mechanism arranged below the width adjustment mechanism; the width adjustment mechanism includes a mounting bracket, a screw rod pivotally connected to the mounting bracket, a guide rod arranged parallel to the screw rod, a nut block threadedly connected to the screw rod and slidingly matched with the guide rod, and a first hand wheel driving the screw rod, the nut block is connected to the end of the wind box through a first connecting piece; the windshield adjustment mechanism includes chain assemblies arranged on both sides of the hot air baffle, a transmission rod linking the two chain assemblies, a lifting rod arranged between the two chain assemblies and a second hand wheel for driving the chain assembly on one side, the lifting rod is connected to the windshield through a second connecting piece; The automatic air supply mechanism comprises an air duct embedded in the inner insulation board, the air duct is vertically arranged, an air inlet is arranged at the upper end of the air duct, and an air outlet is arranged at the lower end, the heater is connected to the air inlet of the air duct through a second air supply pipe, the bottom component comprises a bottom plate and bottom air boxes arranged on both sides of the bottom plate, a bottom air cavity is formed between the bottom air boxes on both sides, the bottom air cavity is located below the product channel, and the air outlet of the air duct is connected to the bottom air box; The heater comprises an outer shell with an opening at the top, a heating tube arranged in a heating cavity of the outer shell, a mounting plate arranged on the top of the outer shell, a heat insulating plate arranged on the mounting plate, a silicone pad arranged on the heat insulating plate and a heating tube mounting frame arranged on the silicone pad; the connecting end of the heating tube faces upward and is fixed to the heating tube mounting frame by a heating tube fixing clamp, the heating tube mounting frame is provided with an inspection port for exposing the connecting end of the heating tube, and the heating tube mounting frame is provided with a top cover at the inspection port.

[0005] As an improvement, the wind damper plate is circular, the adjusting rod passes through the middle of one side of the wind damper plate, the adjusting rod is connected to the wind damper plate through a fixing plate, the fixing plate covers the adjusting rod, and the fixing plate is connected to the wind damper plate through a screw; the limiting ring is provided with a through hole for the adjusting rod to pass through, and the surface of the adjusting rod is provided with a locking bolt that extends into the through hole to lock the adjusting rod.

[0006] As an improvement, the handle assembly includes a fixed plate, a positioning seat arranged on the fixed plate, a handle mounting seat rotatably connected to the positioning seat, and a handle connected to the handle mounting seat, the adjusting rod passes through the fixed plate and the positioning seat in sequence and is key-connected to the handle mounting seat; a scale plate is provided on the side of the fixed plate corresponding to the positioning seat; a receiving groove is provided on the side of the positioning seat that is attached to the fixed plate, an annular groove is provided on the adjusting rod, an elastic retaining ring is provided at the annular groove, and the elastic retaining ring is provided in the receiving groove and against one side of the fixed plate.

[0007] As an improvement, connecting frames are provided on both sides of the heating tube mounting frame, and the connecting frames are connected to the heating tube mounting frame by bolts. Handles are provided on the connecting frames, and both ends of the connecting frames extend out of the heating tube mounting frame to form a connecting part. A long hole is provided on the connecting part, and the connecting part is connected to the top assembly by bolts.

[0008] As an improvement, the mounting bracket includes a bottom sealing plate, side sealing plates arranged at both ends of the bottom sealing plate, a support rod arranged between the two side sealing plates and a top sealing plate cooperating with the bottom sealing plate, the bottom sealing plate, the side sealing plates and the top sealing plate enclose an accommodating space, the bottom sealing plate is provided with an open groove for the first connecting member to pass through, the support rod, the screw rod and the guide rod are arranged in the accommodating space; a slide rail is provided at the bottom of the support rod, the nut block is connected to the connecting block, and the connecting block is provided with a slider cooperating with the slide rail.

[0009] As an improvement, the top sealing plate is provided with a scale, and the connecting block is provided with an indicating rod matching the scale; the first connecting member includes an L-shaped first connecting plate, a second connecting plate, an upper pressure cover, a lower pressure cover and an L-shaped third connecting plate, one end of the first connecting plate is connected to the connecting block, the other end of the first connecting plate extends into the open groove and is connected to one end of the second connecting plate, the other end of the second connecting plate is connected to the upper pressure cover, one end of the third connecting plate is connected to the wind box, the other end of the third connecting plate is arranged between the lower pressure cover and the upper pressure cover, a buffer pad is also provided between the upper pressure cover and the lower pressure cover, and the upper pressure cover and the lower pressure cover are connected by bolts.

[0010] As an improvement, a total of four hot air baffles are provided, of which the two outer sides form a group and the two inner sides form a group. The two hot air baffles in the same group are driven by the same screw, which is a bidirectional screw including a first thread segment and a second thread segment with opposite threads. The two hot air baffles in the same group move in opposite directions.

[0011] As an improvement, the chain assembly includes a first sprocket, a second sprocket located above the first sprocket and a chain, the two ends of the transmission rod are respectively connected to the second sprockets of the chain assemblies on both sides, and the two ends of the lifting rod are respectively connected to the chains of the chain assemblies on both sides.

[0012] As an improvement, the second connecting member includes a connecting rod and a roller, one end of the connecting rod is connected to the windshield, the other end of the connecting rod is provided with a notch groove, the lifting rod passes through the notch groove, and the roller is fixed at the opening of the notch groove.

[0013] As an improvement, the bottom component also includes a support plate arranged under the bottom plate, an insulation cavity is formed between the support plate and the bottom plate, and a support seat is also provided between the support plate and the bottom plate; the bottom air box is surrounded by a cover plate and the bottom plate, and a bottom air outlet is provided on the side of the cover plate facing the bottom air cavity.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Dual-path air supply (top + bottom) forms a three-dimensional hot air circulation, and the temperature difference between the upper and lower surfaces of the product is small; 2. The air duct is embedded in the insulation board to reduce heat loss and energy consumption; 3. The integrated design of air duct and insulation board saves space; 4. The position adjustment mechanism is arranged at the end of the hot air partition, and the width adjustment mechanism is arranged above the wind shield adjustment mechanism. The adjustment mechanism occupies a small volume, is centrally arranged, and is easy to operate; 5. The inspection port and top cover on the heater are designed for easy disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the oven of the present invention.

[0016] Figure 2 This is a top view of the automatic air supply mechanism layout.

[0017] Figure 3 This is the air circulation diagram of the automatic air supply mechanism.

[0018] Figure 4 This is a schematic diagram of the coordination between the air duct and the inner insulation board.

[0019] Figure 5 A schematic diagram of the bottom assembly.

[0020] Figure 6 It is a three-dimensional diagram of the air volume adjustment mechanism.

[0021] Figure 7 It is a side view of the air volume adjustment mechanism.

[0022] Figure 8 It is a schematic diagram of the transmission relationship of the air volume adjustment mechanism.

[0023] Fig. 9 Schematic diagram of the fixed plate surface.

[0024] Fig.10 Schematic diagram of the internal structure of the heater.

[0025] Fig.11 It is a schematic diagram of the coordination between the position adjustment mechanism and the hot air baffle.

[0026] Fig.12 It is a side view of the position adjustment mechanism.

[0027] Fig.13 This is the front view of the position adjustment mechanism.

[0028] Fig.14 Schematic diagram of the width adjustment mechanism.

[0029] Fig.15 It is a cross-sectional view of the width adjustment mechanism.

[0030] Fig.16 This is a schematic diagram of the interior of the width adjustment mechanism. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] like Figure 1 , 3As shown in Figure 11, an energy-saving oven comprises a box body 1 with a heating chamber formed inside, a heater 2 arranged on the top of a hot air baffle, a fan 29 connected to the air inlet side of the heater 2, a plurality of hot air baffles 4 arranged in the heating chamber, a position adjustment mechanism 6 for adjusting the position of the hot air baffles 4, an air volume adjustment mechanism 5 for adjusting the air volume of the hot air baffles 4, and an automatic air supply mechanism 3. In this embodiment, a total of four hot air baffles 4 are provided, of which the two outer sides form a group and the two inner sides form a group, and a product channel is formed between adjacent hot air baffles 4. The hot air baffle 4 comprises a baffle air box 41 and a wind shield 42 arranged on the air outlet side of the baffle air box 41, and the baffle air box 41 is provided with air outlet holes on one side facing the product channel. The box body comprises an inner insulation board 11 arranged on both sides of the heating chamber, an outer insulation board 12 arranged on the outer side of the inner insulation board 11, a bottom component arranged below the hot air baffle 4, and a top component above the hot air baffle 4.

[0033] like Figures 6 to 9As shown, the air volume adjustment mechanism 5 includes an air duct joint 50 connected to the air outlet side of the heater, a damper plate 53 arranged in the air duct joint 50, an adjustment rod 52 that passes through the air duct joint 50 horizontally, and a handle assembly arranged at one end of the adjustment rod 52. The air duct joint 50 is a stainless steel part, and one end of the air duct joint 50 is provided with a connecting ear, and the connecting ear is connected to the heater 1 through a bolt, and the other end of the air duct joint 50 can be plugged into the first air supply pipe 501. The damper plate 53 is fixedly connected to the adjustment rod 52, and the damper plate 53 is circular. The adjustment rod 52 passes through the middle of one side of the damper plate 53. The adjustment rod 52 is connected to the damper plate 53 through a fixing plate 55, and the fixing plate 55 covers the adjustment rod 52. The fixing plate 55 is connected to the damper plate 53 through a screw, and the damper plate 53 is rotated by rotating the adjustment rod 52. The adjusting rod 52 is provided with a limit ring 54 on both sides of the air duct joint 50. The limit ring 54 is provided with a through hole for the adjusting rod 52 to pass through. The surface of the adjusting rod 52 is provided with a locking bolt that extends into the through hole to lock the adjusting rod 52. The position of the limit ring 54 can be adjusted according to the diameter of the air duct joint 50. The handle assembly includes a fixed plate 51, a positioning seat 56 provided on the fixed plate 51, a handle mounting seat 57 rotatably connected to the positioning seat 56, and a handle 58 connected to the handle mounting seat 57; the adjusting rod 52 passes through the fixed plate 51 and the positioning seat 56 in sequence and is spline-connected to the handle mounting seat 57. The handle 58 drives the handle mounting seat 57 to rotate, and the handle mounting seat 57 drives the adjusting rod 52, and the adjusting rod 52 drives the damper plate 53; a scale plate 59 is provided on the fixed plate 51 on the side corresponding to the positioning seat 56 to indicate the opening and closing degree of the damper plate 53; The side of the positioning seat 56 that is in contact with the fixing plate 51 is provided with a receiving groove, the adjusting rod 52 is provided with an annular groove, and an elastic retaining ring is provided at the annular groove. The elastic retaining ring is arranged in the receiving groove and abuts against one side of the fixing plate 51. The elastic retaining ring is used for limiting to prevent the adjusting rod 52 from axial displacement; the fixing plate 51 is bent into an L-shape on both sides and provided with fixing holes, and the fixing plate 51 is fixed to the outer frame of the oven through the fixing plate 51; the fixing plate 51 can be integrated with multiple handles 58, and each handle 58 can control a corresponding air duct joint 50. Air volume adjustment: By rotating the handle 58, the adjusting rod 52 and the air damper plate 53 are driven to rotate to adjust the air volume; the handle 58 cooperates with the scale indication to accurately control the opening and closing degree of the air damper plate 53; multiple handles 58 can be arranged in a centralized manner to facilitate unified control of the air volume of multiple air ducts; the handle 58 is connected to the air damper plate 53 through the adjusting rod 52, and the handle 58 can be arranged outside the oven to facilitate the operation of technicians.

[0034] like Fig.10As shown, the heater 2 comprises a shell 21 with an opening at the top, a heating tube 22 arranged in the heating chamber of the shell 21, a mounting plate 23 arranged at the top of the shell 21, a heat insulating plate 24 arranged on the mounting plate 23, a silicone pad arranged on the heat insulating plate 24, and a heating tube mounting frame 25 arranged on the silicone pad. A fan 29 is provided on the air inlet side of the heater, and the fan 29 is fixed on the mounting plate 23, so that the heater 1 and the fan 29 form an integral module, which is easy to install. The connection end of the heating tube 22 faces upward and is fixed to the heating tube mounting frame 25 by a heating tube fixing clamp 26; the heating tube mounting frame 25 is provided with an inspection port for exposing the connection end of the heating tube, and the heating tube mounting frame 25 is provided with a top cover 27 at the inspection port; when the heating tube needs to be maintained, the top cover 27 is opened and the operation is performed through the inspection port. Connecting frames 28 are provided on both sides of the heating tube mounting frame 25, and the connecting frames 28 are connected to the heating tube mounting frame 25 by bolts. Handles are provided on the connecting frames 28, and both ends of the connecting frames 28 extend out of the heating tube mounting frame 25 to form connecting parts. The connecting parts are provided with elongated holes, and the heating tube mounting frame 25 can be fixed on the top assembly of the oven through the connecting frames 28.

[0035] like Figures 11 to 16As shown, the two ends of the hot air baffle 4 are respectively provided with position adjustment mechanisms 6, and the position adjustment mechanisms 6 include a width adjustment mechanism 61 and a windshield adjustment mechanism 62 provided below the width adjustment mechanism 61; the position adjustment mechanism is provided at the end of the hot air baffle 4, and the width adjustment mechanism 61 is provided above the windshield adjustment mechanism 62, and the adjustment mechanism occupies a small volume, is centrally arranged, and is easy to operate. The width adjustment mechanism 61 includes a mounting bracket, a screw rod 618 pivotally connected to the mounting bracket, a guide rod 619 arranged parallel to the screw rod 618, a nut block 610 threadedly connected to the screw rod 618 and slidingly matched with the guide rod 619, and a first hand wheel 612 driving the screw rod 618. The mounting bracket includes a bottom sealing plate, side sealing plates arranged at both ends of the bottom sealing plate, a support rod 615 arranged between the sealing plates on both sides, and a top sealing plate 613 matched with the bottom sealing plate. The bottom sealing plate, the side sealing plates and the top sealing plate 13 enclose a containing space. The bottom sealing plate is provided with a long strip opening groove. The support rod 615, the screw rod 618 and the guide rod 619 are arranged in the containing space. The driving mechanism is arranged in the box body of the mounting bracket, which well protects the driving mechanism. The driving mechanism can be inspected after opening the top sealing plate 613. A slide rail 616 is provided at the bottom of the support rod 615. The nut block 610 is connected to the connecting block 6116. The connecting block 6116 is provided with a slider 617 matched with the slide rail 616. Adding a sliding component can improve the movement stability of the nut block 610. The screw 618 is a bidirectional screw, which includes a first thread segment and a second thread segment with opposite threads. The two hot air baffles 4 in the same group move in opposite directions. The first thread segment and the second thread segment of the bidirectional screw 618 respectively drive the two hot air baffles in the same group to move in opposite directions, and simultaneously expand or reduce the width of the product channels on both sides. The top sealing plate 613 is provided with a scale 6131, and the connecting block 6116 is provided with an indicator rod 614 that matches the scale. The indicator rod 614 is threadedly connected to the connecting block 6116, which can indicate the moving position of the nut block 610, so that the operator can confirm the current position of the hot air baffle 4. The nut block 610 is connected to the end of the partition air box 631 through the first connecting member 611; the first connecting member 611 includes an L-shaped first connecting plate 6111, a second connecting plate 6112, an upper pressure cover 6113, a lower pressure cover 6115 and an L-shaped third connecting plate, one end of the first connecting plate 6111 is connected to the connecting block 6116, the other end of the first connecting plate 6111 extends into the open groove and is connected to one end of the second connecting plate 6112, the other end of the second connecting plate 6112 is connected to the upper pressure cover 6113, one end of the third connecting plate is connected to the partition air box 4, the other end of the third connecting plate is arranged between the lower pressure cover 6115 and the upper pressure cover 6113, a buffer pad 6114 is also arranged between the upper pressure cover 6113 and the lower pressure cover 6115, and the upper pressure cover 6113 and the lower pressure cover 6115 are connected by bolts.The windshield adjustment mechanism 62 includes chain assemblies arranged on both sides of the hot air baffle 4, a transmission rod 626 that links the two chain assemblies, a lifting rod 627 arranged between the two chain assemblies, and a second hand wheel 622 for driving the chain assembly on one side. The chain assembly includes a first sprocket 623, a second sprocket 624 located above the first sprocket 623, and a chain 625. The two ends of the transmission rod 626 are respectively connected to the second sprocket 624 of the chain assemblies on both sides, and the two ends of the lifting rod 627 are respectively connected to the chains 625 of the chain assemblies on both sides. The transmission rod 626 ensures that the chains 625 on both sides are synchronized to avoid uneven tilting of the windshield 632. The lifting rod 627 is connected to the wind shield 42 through a second connecting member 621, and the second connecting member 621 includes a connecting rod and a roller. One end of the connecting rod is connected to the wind shield 42, and the other end of the connecting rod is provided with a notch groove. The lifting rod 627 passes through the notch groove, and the roller is fixed at the opening of the opening groove. When the width adjustment mechanism 61 drives the partition air box 41 to move laterally, the partition air box 41 drives the side wind shield 42 to move laterally synchronously, and the wind shield 42 rolls laterally on the lifting rod 627 with the help of the roller. When it is necessary to adjust the width of the product channel, turn the first hand wheel 612 to drive the screw rod 618 to rotate, and the nut block 610 slides along the guide rod 619, driving the partition air box 41 to move horizontally to achieve spacing adjustment; when it is necessary to adjust the air volume of the partition air box 41, turn the second hand wheel 622 to drive the chain assembly, and the chain drives the lifting rod 627 to rise and fall, and drives the wind shield 42 to rise and fall through the second connecting member, so as to adjust the number and position of the air outlet holes that can be covered by the wind shield 42, so as to achieve the purpose of adjustment.

[0036] like Figures 2 to 5As shown, the automatic air supply mechanism 3 includes an air duct 35 embedded in the inner insulation board, and the air duct 35 is integrated with the inner insulation board 11 to save space. The air outlet side of the heater 2 is connected to the hot air partition 4 through the first air supply duct 501, and the heater 2 is connected to the air duct 35 through the second air supply duct 31. The air duct 35 is vertically arranged, and the upper end of the air duct 35 is provided with an air inlet, and the lower end is provided with an air outlet. The heater 2 is connected to the air inlet of the air duct 35 through the second air supply duct 31, and then the hot air is led to the bottom; the air duct 35 is rectangular, and the upper end of the air inlet of the air duct 35 is provided with an inclined air guide joint 4, and the second air supply duct 3 is connected to the air guide joint 50. The hot air from the second air supply duct 31 is introduced into the air duct 35 through the air guide joint 50, which reduces the air flow resistance and improves the sealing performance. The bottom assembly includes a bottom plate 32, bottom air boxes 36 arranged on both sides of the bottom plate 32 and a support plate 33 arranged below the bottom plate 32; a bottom air cavity 31 is formed between the bottom air boxes 36 on both sides, the bottom air cavity 31 is located below the product channel, the air outlet of the air guide 35 is connected with the bottom air box 36, the heater 2 transports hot air to the air guide 35 through the second air supply duct 31, the hot air is transported downward to the bottom air box 36, and the hot air of the bottom air box 36 enters the bottom air cavity 31; a heat insulation cavity is formed between the support plate 33 and the bottom plate 32, and a support seat 38 is also provided between the support plate 33 and the bottom plate 32, the heat insulation cavity blocks the downward transfer of heat to ensure mechanical strength; the bottom air box 36 is surrounded by a cover plate and the bottom plate 32, and a bottom air outlet 361 is provided on the side of the cover plate facing the bottom air cavity 31; according to the heating temperature zone, a plurality of isolation spaces can be set in the bottom air box 36, and each isolation space corresponds to a temperature zone. The first air supply path: the heater 2 transports hot air to the hot air baffle 4 through the first air supply duct, and the air outlet holes on the side of the hot air baffle 4 directly guide the hot air into the product channel; the second air supply path: the heater 2 is connected to the air guide duct 35 embedded in the inner insulation board 11 through the second air supply duct 31, and the hot air is transported downward to the bottom air box 36 through the air guide duct 35, and finally diffused upward from the bottom air cavity 31 to the product channel; the bottom air cavity 31 is located directly below the product channel, and the hot air is evenly released through the bottom air outlet of the bottom air box 36, forming an auxiliary heating airflow from bottom to top, eliminating the bottom heating blind spot.

Claims

1. An energy-saving oven, comprising a box body with a heating chamber formed therein, a plurality of hot air baffles arranged in the heating chamber, a heater arranged on the top of the hot air baffles, a position adjustment mechanism for adjusting the position of the hot air baffles, an air volume adjustment mechanism for adjusting the air volume of the hot air baffles, and an automatic air supply mechanism, a product channel is formed between adjacent hot air baffles, the hot air baffles include a baffle air box and a wind shield arranged on the air outlet side of the baffle air box, and characterized in that: The box body comprises inner insulation plates arranged on both sides of the heating chamber, outer insulation plates arranged outside the inner insulation plates, a bottom component arranged below the hot air baffle and a top component arranged above the hot air baffle; The air volume adjustment mechanism includes an air duct joint connected to the air outlet side of the heater, an air damper plate arranged in the air duct joint, an adjustment rod that transversely passes through the air duct joint, and a handle assembly arranged at one end of the adjustment rod, the air damper plate is fixedly connected to the adjustment rod, and the adjustment rod is provided with limit rings on both sides of the air duct joint; The position adjustment mechanism includes a width adjustment mechanism and a windshield adjustment mechanism arranged below the width adjustment mechanism; the width adjustment mechanism includes a mounting bracket, a screw rod pivotally connected to the mounting bracket, a guide rod arranged parallel to the screw rod, a nut block threadedly connected to the screw rod and slidingly matched with the guide rod, and a first hand wheel driving the screw rod, the nut block is connected to the end of the wind box through a first connecting piece; the windshield adjustment mechanism includes chain assemblies arranged on both sides of the hot air baffle, a transmission rod linking the two chain assemblies, a lifting rod arranged between the two chain assemblies and a second hand wheel for driving the chain assembly on one side, the lifting rod is connected to the windshield through a second connecting piece; The automatic air supply mechanism comprises an air duct embedded in the inner insulation board, the air duct is vertically arranged, an air inlet is arranged at the upper end of the air duct, and an air outlet is arranged at the lower end, the heater is connected to the air inlet of the air duct through a second air supply pipe, the bottom component comprises a bottom plate and bottom air boxes arranged on both sides of the bottom plate, a bottom air cavity is formed between the bottom air boxes on both sides, the bottom air cavity is located below the product channel, and the air outlet of the air duct is connected to the bottom air box; The heater comprises an outer shell with an opening at the top, a heating tube arranged in a heating cavity of the outer shell, a mounting plate arranged on the top of the outer shell, a heat insulating plate arranged on the mounting plate, a silicone pad arranged on the heat insulating plate and a heating tube mounting frame arranged on the silicone pad; the connecting end of the heating tube faces upward and is fixed to the heating tube mounting frame by a heating tube fixing clamp, the heating tube mounting frame is provided with an inspection port for exposing the connecting end of the heating tube, and the heating tube mounting frame is provided with a top cover at the inspection port.

2. The energy-saving oven according to claim 1, characterized in that: The wind damper plate is circular, the adjusting rod passes through the middle of one side of the wind damper plate, the adjusting rod is connected to the wind damper plate through a fixing plate, the fixing plate covers the adjusting rod, and the fixing plate is connected to the wind damper plate through a screw; the limiting ring is provided with a through hole for the adjusting rod to pass through, and the surface of the adjusting rod is provided with a locking bolt that extends into the through hole to lock the adjusting rod.

3. The energy-saving oven according to claim 1, characterized in that: The handle assembly includes a fixed plate, a positioning seat arranged on the fixed plate, a handle mounting seat rotatably connected to the positioning seat, and a handle connected to the handle mounting seat, the adjusting rod passes through the fixed plate and the positioning seat in sequence and is key-connected to the handle mounting seat; a scale plate is provided on the side of the fixed plate corresponding to the positioning seat; a receiving groove is provided on the side of the positioning seat that is in contact with the fixed plate, an annular groove is provided on the adjusting rod, an elastic retaining ring is provided at the annular groove, and the elastic retaining ring is provided in the receiving groove and abuts against one side of the fixed plate.

4. The energy-saving oven according to claim 1, characterized in that: Connecting frames are provided on both sides of the heating tube mounting frame, and the connecting frames are connected to the heating tube mounting frame by bolts. Handles are provided on the connecting frames, and both ends of the connecting frames extend out of the heating tube mounting frame to form connecting parts. Long holes are provided on the connecting parts, and the connecting parts are connected to the top assembly by bolts.

5. The energy-saving oven according to claim 1, characterized in that: The mounting bracket includes a bottom sealing plate, side sealing plates arranged at both ends of the bottom sealing plate, a support rod arranged between the two side sealing plates and a top sealing plate matched with the bottom sealing plate. The bottom sealing plate, the side sealing plates and the top sealing plate form an accommodating space. The bottom sealing plate is provided with an open groove for the first connecting member to pass through. The support rod, the screw rod and the guide rod are arranged in the accommodating space. A slide rail is provided at the bottom of the support rod, the nut block is connected to the connecting block, and the connecting block is provided with a slider matched with the slide rail.

6. The energy-saving oven according to claim 5, characterized in that: The top sealing plate is provided with a scale, and the connecting block is provided with an indicating rod matching the scale; the first connecting member includes an L-shaped first connecting plate, a second connecting plate, an upper pressure cover, a lower pressure cover and an L-shaped third connecting plate, one end of the first connecting plate is connected to the connecting block, the other end of the first connecting plate extends into the open groove and is connected to one end of the second connecting plate, the other end of the second connecting plate is connected to the upper pressure cover, one end of the third connecting plate is connected to the wind box, the other end of the third connecting plate is arranged between the lower pressure cover and the upper pressure cover, a buffer pad is also provided between the upper pressure cover and the lower pressure cover, and the upper pressure cover and the lower pressure cover are connected by bolts.

7. The energy-saving oven according to claim 1, characterized in that: There are four hot air baffles in total, of which the two outer sides form a group and the two inner sides form a group. The two hot air baffles in the same group are driven by the same screw, which is a bidirectional screw including a first thread segment and a second thread segment with opposite threads. The two hot air baffles in the same group move in opposite directions.

8. The energy-saving oven according to claim 1, characterized in that: The chain assembly includes a first sprocket, a second sprocket located above the first sprocket and a chain. The two ends of the transmission rod are respectively connected to the second sprockets of the chain assemblies on both sides, and the two ends of the lifting rod are respectively connected to the chains of the chain assemblies on both sides.

9. The energy-saving oven according to claim 1, characterized in that: The second connecting member includes a connecting rod and a roller, one end of the connecting rod is connected to the windshield, the other end of the connecting rod is provided with a notch groove, the lifting rod passes through the notch groove, and the roller is fixed at the opening of the notch groove.

10. The energy-saving oven according to claim 1, characterized in that: The bottom component also includes a support plate arranged below the bottom plate, a heat-insulating cavity is formed between the support plate and the bottom plate, and a support seat is also provided between the support plate and the bottom plate; the bottom air box is surrounded by a cover plate and the bottom plate, and a bottom air outlet is provided on one side of the cover plate facing the bottom air cavity.

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