Small cage bag tunnel type steaming equipment

Abstract

The invention discloses tunnel type steaming equipment for small steamed buns, and relates to the technical field of steaming equipment, the tunnel type steaming equipment for small steamed buns is characterized in that the tunnel type steaming equipment for small steamed buns comprises a rack main body and a heat preservation cover installed on the rack main body, the rack main body is provided with a water storage tank, and the water storage tank carries out water sealing on the heat preservation cover; and smoke hoods are arranged on the two sides of the rack main body. According to the tunnel type steaming equipment, the heat preservation cover is detachably arranged, so that when the interior of the tunnel type steaming equipment is damaged, the interior of the tunnel type steaming equipment is conveniently maintained, and when the tunnel type steaming equipment works normally after being maintained, water is injected into the water storage tank, so that a water sealing effect can be achieved on the heat preservation cover; water in the water storage tank can absorb steam in the heat preservation cover, so that steam leakage and external temperature rising are effectively avoided, meanwhile, the smoke collecting covers are arranged on the two sides of the rack main body, and then redundant steam in the steaming equipment can be discharged from the smoke collecting covers on the two sides.

Description

Technical Field

[0001] The embodiment of the present invention relates to the technical field of steaming equipment, and more specifically, to a tunnel-type steaming equipment for steamed dumplings. Background Art

[0002] The tunnel-type steaming equipment for xiaolongbao is an industrial steaming equipment used for continuous and automated production of xiaolongbao. Its core feature is to simulate the traditional steaming process and combine it with modern automation technology to greatly improve production efficiency and product consistency. It is suitable for the large-scale production needs of food factories, central kitchens or chain catering companies. The main body of the tunnel-type steaming equipment is a closed long tunnel with a conveyor belt inside. The xiaolongbao passes through the tunnel at a constant speed via the conveyor belt, completing the preheating, heating, and insulation processes in sequence.

[0003] When existing tunnel steaming equipment is working, excess steam will leak from both sides of the tunnel steaming equipment, thereby causing the indoor temperature and humidity to rise. At the same time, in order to facilitate observation of the interior of the steaming equipment and maintenance of damaged internal structures, some existing steaming equipment will design a detachable insulation cover, but the detachable insulation cover will further cause steam leakage.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the Invention

[0005] The purpose of the embodiments of the present invention is to provide a tunnel-type steaming device for steamed dumplings in order to solve the above-mentioned problems.

[0006] The above technical objectives of the embodiments of the present invention are achieved through the following technical solutions: a tunnel-type steaming device for steamed dumplings, comprising a frame body and a heat-insulating cover installed on the frame body, the frame body is provided with symmetrically distributed water storage tanks, the two ends of the heat-insulating cover are located in the water storage tanks, the water storage tanks water-seal the heat-insulating cover, the frame body is provided with a lifting frame, the top of the lifting frame is provided with a lifting mechanism for driving the heat-insulating cover to rise and fall, and the lifting frame is provided with a lifting mechanism for limiting the heat-insulating cover. The smoke collecting hood is provided with a limit mechanism for the position, a condensation water collecting device connected with the water storage tank is provided on the heat preservation hood, smoke collecting hoods connected with the heat preservation hood are provided on both sides of the frame body, an air suction pump is provided above the smoke collecting hood, the smoke collecting hood and the air suction pump are connected by an exhaust pipe, a first mesh plate and a second mesh plate located at the upper end of the first mesh plate are provided in the smoke collecting hood, a spraying and pressing mechanism is provided between the first mesh plate and the second mesh plate, and a driving mechanism for driving the spraying and pressing mechanism to perform reciprocating motion is provided on the smoke collecting hood.

[0007] The present invention is further configured as follows: the first mesh plate includes a left mesh plate and a right mesh plate, the ends of the left mesh plate and the right mesh plate that are close to each other are rotatably matched with the smoke hood, and the ends of the left mesh plate and the right mesh plate that are away from each other are in contact with the inner wall of the smoke hood, the right mesh plate is fixedly connected to a driving rod, a driving gear is fixedly connected to the driving rod, a driven gear is fixedly connected to the upper part of the left mesh plate, the driving gear is meshed with the driven gear, and the second mesh plate is fixedly connected to the inner wall of the smoke hood.

[0008] The present invention is further configured as follows: one end of the driving rod extends out of the smoke collecting hood and is fixedly connected to a crank handle; a first limiting block is provided on the smoke collecting hood; and a limiting groove is provided on the first limiting block to be engaged with the crank handle.

[0009] The present invention is further configured as follows: the spray pressure mechanism includes two support rods fixedly connected between the first mesh plate and the second mesh plate, a slide groove is provided on the two support rods facing each other, a support seat is installed between the two support rods, symmetrically distributed protrusions are fixedly connected to the support seat, the protrusions slide in cooperation with the slide groove, the lower end of the support seat is fixedly connected to a symmetrically distributed spray pressure pipe, a gas hose is installed on one side of the smoke hood, and the gas hose is connected to the upper end of the support seat.

[0010] The present invention is further configured as follows: the driving mechanism includes a first driving motor fixedly connected to the smoke hood, the output end of the first driving motor extends into the smoke hood and is fixedly connected to a screw rod, the lower end of the support seat is fixedly connected to a connecting block, the screw rod passes through the connecting block and is threadedly engaged with the connecting block.

[0011] The present invention is further configured as follows: the smoke collecting hood is fixedly connected to a guide plate at the lower end of the first mesh plate, the lower end of the guide plate is fixedly connected to a collecting trough, the lower end of the collecting trough is provided with a drain pipe, the drain pipe passes through the smoke collecting hood and is connected to the water storage tank, and the side wall of the condenser is fixedly connected to a heat sink.

[0012] The present invention is further configured as follows: the driving mechanism includes several second driving motors fixedly connected to the top of the lifting frame, the output end of the second driving motor is fixedly connected to a driving wheel, a lifting rope is wound around the driving wheel, and a hook for the lifting rope to pass through is provided on the thermal insulation cover.

[0013] The present invention is further configured as follows: the limiting mechanism includes a rotating cylinder arranged on a lifting frame, one end of the rotating cylinder is fixedly connected to a second limiting block, the lifting frame is provided with a sensor at the lower end of the rotating cylinder, and the sensor is electrically connected to the rotating cylinder.

[0014] The present invention is further configured as follows: an air outlet is provided at the upper end of the thermal insulation cover, the condensation water collection device includes a three-way pipe fixedly connected to the air outlet, square condensation tubes are fixed at both ends of the three-way pipe, the condensation tubes are in contact with the upper surface of the thermal insulation cover, and the lower end of the condensation tubes is connected to the water storage tank.

[0015] The present invention is further configured as follows: a water collecting box is provided on one side of the frame body, the water collecting box and the water storage tank are communicated with each other, a steam storage chamber is provided on one side of the frame body, a plurality of shunt pipes are provided on the steam storage chamber, a plurality of air inlets distributed at equal intervals are provided on the side wall of the frame body, the air inlets are clamped in a one-to-one correspondence with the shunt pipes, and the gas delivery hose is connected to the steam storage chamber.

[0016] In summary, the present invention has the following beneficial effects:

[0017] By making the heat preservation cover detachable, when damage occurs inside the tunnel steaming equipment, the heat preservation cover can be lifted up by the lifting mechanism, thereby facilitating maintenance inside the tunnel steaming equipment. At the same time, by activating the limiting mechanism, the lifted heat preservation cover can be limited to prevent the heat preservation cover from falling suddenly and causing harm to the staff.

[0018] When the maintenance is completed and the machine is working normally, water is injected into the water tank, which can then play a water-tight role on the thermal insulation cover. The water in the water tank can absorb the steam in the thermal insulation cover, thereby effectively preventing steam leakage and external temperature increase. At the same time, by setting up a condensed water collection device, the steam can be condensed and returned to the water tank to replenish the water in the water tank, thereby increasing the recycling of steam.

[0019] At the same time, by arranging smoke hoods on both sides of the frame body, excess steam in the steaming equipment can be discharged from the smoke hoods on both sides. The first mesh plate and the second mesh plate located in the smoke hood can block the moisture in the steam, thereby reducing the humidity in the steam after being isolated by the mesh plates. After the smoke hood has been working for a period of time, water will condense in the mesh holes of the first mesh plate and the second mesh plate due to tension, making it difficult for steam to circulate. The driving mechanism drives the spraying and pressing mechanism to spray and press the mesh plates back and forth, thereby destroying the water tension on the first mesh plate and the second mesh plate, so that the steam can pass through the first mesh plate and the second mesh plate smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a tunnel-type steaming equipment for steamed dumplings in the present invention. Figure 1 ;

[0021] Figure 2 for Figure 1 A magnified view of middle A;

[0022] Figure 3 for Figure 1 Enlarged view of middle B;

[0023] Figure 4 This is a schematic diagram of the structure of a tunnel-type steaming equipment for steamed dumplings in the present invention. Figure 2 ;

[0024] Figure 5 for Figure 4 Enlarged view of middle C;

[0025] Figure 6 for Figure 4 Enlarged view of middle B;

[0026] Figure 7 Schematic diagram of the structure of the lifting rope and the hook in the present invention;

[0027] Figure 8 Schematic diagram of the structure of the condensation collection device in the present invention;

[0028] Figure 9 This is a broken view of the condensation collection device and the heat insulation cover of the present invention;

[0029] Figure 10 This is a diagram showing the internal structure of the smoke collecting hood of the present invention;

[0030] Figure 11 is an internal cross-sectional view of the smoke collecting hood of the present invention;

[0031] Figure 12 Schematic diagram of the structure of the limiting mechanism of the present invention;

[0032] Figure 13 It is a cross-sectional view of the limiting mechanism in the present invention.

[0033] Figure numerals: 1, frame body; 2, insulation cover; 3, water storage tank; 4, lifting frame; 5, limiting mechanism; 6, condensation water collection device; 7, smoke collection hood; 8, vacuum pump; 9, exhaust pipe; 10, second mesh plate; 11, left mesh plate; 12, right mesh plate; 13, driving rod; 14, driving gear; 15, driven gear; 16, crank; 17, first limiting block; 18, limiting groove; 19, support rod; 20, slide; 21, support seat; 22, bump; 23, spray pressure pipe; 24, gas hose; 25, first driving motor 26, screw ; 27. Connecting block; 28. Guide plate; 29. Collecting trough; 30. Drain pipe; 31. Second driving motor; 32. Driving wheel; 33. Lifting rope; 34. Hook; 35. Rotating cylinder; 36. Second limiting block; 37. Sensor; 38. Air outlet; 39. Tee pipe; 40. Square condenser; 41. Heat sink; 42. Water collecting tank; 43. Steam storage chamber; 44. Diverter pipe; 45. Air inlet; 46. Stretching cylinder; 47. Threaded rod; 48. Third limiting block; 49. Limiting plate; 50. Annular protrusion; 51. Limiting groove. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] In one possible embodiment, see Figure 1 and Figure 7 As shown, a tunnel-type steaming device for steamed dumplings includes a frame body 1 and a heat-insulating cover 2 installed on the frame body 1. The heat-insulating cover 2 is detachably installed on the frame body 1. A lifting frame 4 is provided on the frame body 1. The top of the lifting frame 4 is provided with a lifting mechanism for driving the heat-insulating cover 2 to rise and fall. The lifting mechanism can drive the heat-insulating cover 2 to rise and fall, thereby facilitating the staff to repair and clean the inside of the heat-insulating cover 2. The driving mechanism includes several second driving motors 31 fixedly connected to the top of the lifting frame 4, the output end of the second driving motor 31 is fixedly connected to a driving wheel 32, a lifting rope 33 is wound around the driving wheel 32, and a hook 34 for the lifting rope 33 to pass through is provided on the heat-insulating cover 2. The rotation of the driving wheel 32 is driven by the second driving motor 31, and the rising and falling of the heat-insulating cover 2 is driven by the lifting rope 33 wound around the driving wheel 32.

[0036] For further information, see Figure 1 and Figure 3The lifting frame 4 is provided with a limiting mechanism 5 for limiting the heat preservation cover 2. After the heat preservation cover 2 is lifted, the heat preservation cover 2 is limited by the limiting mechanism 5, thereby improving the overall safety of the lifting mechanism and preventing the heat preservation cover 2 from falling off suddenly and causing damage to the staff. The limiting mechanism 5 includes a rotating cylinder 35 provided on the lifting frame 4, one end of the rotating cylinder 35 is fixedly connected to the second limiting block 36, and the lifting frame 4 is provided with a sensor 37 at the lower end of the rotating cylinder 35, which is electrically connected to the rotating cylinder 35. When the lifting mechanism lifts the heat preservation cover 2, the sensor 37 senses that the heat preservation cover 2 has risen, and starts after a delay of 5 seconds, driving the rotating cylinder 35 to work. The rotating cylinder 35 drives the second limiting block 36 to rotate, so that the second limiting block 36 abuts against the lower end of the heat preservation cover 2, thereby limiting the heat preservation cover 2 and preventing safety hazards caused by the falling of the heat preservation cover 2.

[0037] In another feasible embodiment, further, please refer to Figure 1 、 Figure 12 and Figure 13 As shown, the limiting mechanism 5 includes a stretching cylinder 46 installed on the lifting frame 4, and the output end of the stretching cylinder 46 is fixedly connected to a threaded rod 47. The lifting frame 4 is provided with a third limit block 48, and the third limit block 48 rotates with the lifting frame 4, and an annular protrusion 50 is provided on the third limit block 48. The lifting frame 4 is provided with an annular protrusion 50. The lifting frame 4 is provided with an annular groove 51 for limiting the annular protrusion 50. The screw rod 26 passes through the center point of the annular protrusion 50 and is threadedly engaged with the third limit block 48. Then, after the sensor 37 is started, the stretching cylinder 46 drives the threaded rod 47 to slide, and the threaded engagement between the threaded rod 47 and the third limit block 48 drives the third limit block 48 to rotate. When the stretching cylinder 46 is stretched outward to the farthest distance, the third limit block 48 just abuts against the bottom of the heat preservation cover 2, which plays a limiting role on the heat preservation cover 2. A limiting plate 49 is provided at the top of the threaded rod 47 to prevent the third limit block 48 from detaching from the threaded rod 47.

[0038] For further information, see Figure 4 and Figure 6As shown, the frame body 1 is provided with symmetrically distributed water tanks 3. When the heat preservation cover 2 is lowered, both ends of the heat preservation cover 2 are located in the water tanks 3. The water tanks 3 are filled with water to water-seal the heat preservation cover 2. The water in the water tanks 3 will reduce the gap between the heat preservation cover 2 and the frame body 1. Then, when the steaming equipment is working, the water in the water tanks 3 can absorb the steam in the heat preservation cover 2, thereby effectively avoiding the leakage of steam and the increase of the external temperature. The heat preservation cover 2 is provided with a condensation water collecting device 6 connected with the water tank 3. The water in the water tank 3 will heat up as it absorbs the steam, thereby reducing evaporation. The excess steam in the heat preservation cover 2 can be recycled through the condensation water collecting device 6, and the condensation recovered by the condensation water collecting device 6 is injected into the water tank 3 for replenishment, thereby increasing the recycling of the steam.

[0039] For further information, see Figure 1 、 Figure 4 、 Figure 5 、 Figure 8 and Figure 9 As shown, an air outlet 38 is provided at the upper end of the thermal insulation cover 2, and the condensed water collecting device 6 includes a three-way pipe 39 fixedly connected to the air outlet 38. Square condensing tubes 40 are fixed to the left and right ends of the three-way pipe 39. The condensing tubes are in contact with the upper surface of the thermal insulation cover 2, and the lower ends of the condensing tubes are connected to the water storage tank 3. The steam in the thermal insulation cover 2 will enter the three-way pipe 39 through the air outlet 38, and then flow into the square condensing tubes 40 on both sides of the three-way pipe 39. The steam will be re-condensed into liquid in the condensing tube and flow into the water storage tank 3 to replenish the water storage tank 3. The side wall of the condensing tube is fixedly connected with a heat sink 41. The heat sink 41 can accelerate the heat dissipation of the condensing tube and improve the heat dissipation capacity of the condensing tube.

[0040] For further information, see Figure 1 and Figure 10 As shown, smoke hoods 7 connected to the thermal insulation cover 2 are provided on both sides of the frame body 1. The smoke hoods 7 will absorb excess steam, thereby reducing steam leakage. An exhaust pump 8 is provided above the smoke hood 7. The smoke hood 7 and the exhaust pump 8 are connected by an exhaust pipe 9. A first mesh plate and a second mesh plate 10 located at the upper end of the first mesh plate are provided in the smoke hood 7. When the smoke hood 7 is working, the first mesh plate and the second mesh plate 10 can fully condense the moisture in the steam, ensuring the isolation effect of the first mesh plate and the second mesh plate 10 on moisture, thereby reducing the humidity in the steam after isolation by the first mesh plate and the second mesh plate 10, and reducing damage to the exhaust pump 8.

[0041] For further information, see Figure 1 、 Figure 2 、 Figure 10 and Figure 11As shown, the first mesh plate includes a left mesh plate 11 and a right mesh plate 12, and the ends of the left mesh plate 11 and the right mesh plate 12 that are close to each other are rotated with the smoke hood 7, and the ends of the left mesh plate 11 and the right mesh plate 12 that are away from each other abut against the inner wall of the smoke hood 7. The right mesh plate 12 is fixedly connected to a driving rod 13, and a driving gear 14 is fixedly connected to the driving rod 13. The upper part of the left mesh plate 11 is fixedly connected to a driven gear 15, and the driving gear 14 is meshed with the driven gear 15. One end of the driving rod 13 extends out of the smoke hood 7 and is fixedly connected to a crank 16. The second mesh plate 10 is fixedly connected to the inner wall of the smoke hood 7. When there is too much steam in the smoke hood 7 and the steam cannot be discharged in time, it can be discharged by rotating The crank handle 16 is driven to rotate the driving rod 13 fixedly connected to the crank handle 16, which drives the driving gear 14 to drive, and the driving gear 14 drives the rotation of the driven gear 15 meshed with it, so that the left mesh plate 11 and the right mesh plate 12 rotate synchronously in opposite directions, so that the ends of the left mesh plate 11 and the right mesh plate 12 away from each other are separated from the inner wall of the smoke hood 7, thereby increasing the flow area of steam and accelerating the discharge of steam. A first limit block 17 is provided on the smoke hood 7, and a limit groove 18 is provided on the first limit block 17 to be engaged with the crank handle 16. After turning the crank handle 16, it is engaged with the limit groove 18, thereby ensuring the stability of the left mesh plate 11 and the right mesh plate 12.

[0042] For further information, see Figure 10 and Figure 11 As shown, a spray-pressure mechanism is provided between the first mesh plate and the second mesh plate 10, and a driving mechanism for driving the spray-pressure mechanism to perform reciprocating motion is provided on the smoke hood 7. After the smoke hood 7 has been working for a period of time, water will condense in the mesh holes of the first mesh plate and the second mesh plate 10 due to tension, making it difficult for steam to flow. The spray-pressure mechanism is driven by the driving mechanism to spray and press the mesh plates back and forth, thereby destroying the water tension on the first mesh plate and the second mesh plate 10, so that the steam can pass through the first mesh plate and the second mesh plate 10 smoothly.

[0043] For further information, see Figure 10 and Figure 11As shown, the spraying mechanism includes two support rods 19 fixedly connected between the first mesh plate and the second mesh plate 10, and a slide groove 20 is provided on the two support rods 19 on the opposite side. A support seat 21 is installed between the two support rods 19, and a symmetrically distributed protrusion 22 is fixedly connected to the support seat 21. The protrusion 22 slides with the slide groove 20. The slide groove 20 limits the protrusion 22, which can support the support seat 21 so that it can only slide along the slide groove 20. The lower end of the support seat 21 is fixedly connected with a symmetrically distributed spray Pressure pipe 23, spray pressure pipe 23 sprays pressure regularly, and a gas hose 24 is installed on one side of the smoke hood 7. The gas hose 24 is connected to the upper end of the support seat 21. The gas hose 24 passes through the upper end of the second mesh plate 10, and is installed with the support seat 21 through the gap between the two second mesh plates 10. At the same time, it is connected with the spray pressure pipe 23, and then the steam is input into the spray pressure pipe 23 through the input hose, and then sprayed through the spray pressure pipe 23 to destroy the water tension on the first mesh plate and the second mesh plate 10, so that the steam can pass smoothly.

[0044] For further information, see Figure 10 and Figure 11 As shown, the driving mechanism includes a first driving motor 25 fixedly connected to the smoke hood 7, the output end of the first driving motor 25 extends into the smoke hood 7 and is fixedly connected to a screw rod 26, the lower end of the support seat 21 is fixedly connected to a connecting block 27, the screw rod 26 passes through the connecting block 27 and is threadedly engaged with the connecting block 27, the driving mechanism starts at a time, and starts after the smoke hood 7 has worked for a period of time. Through the output of the first driving motor 25, the screw rod 26 is driven to rotate, and then the support seat 21 threadedly engaged with the screw rod 26 is driven to move along the screw rod 26, and by changing the rotation direction of the first driving motor 25, the support seat 21 is driven forward and backward, and the first mesh plate and the second mesh plate 10 are repeatedly flushed. At the same time, the first driving motor 25 is set at a time and works synchronously with the spray pressure pipe 23.

[0045] For further information, see Figure 1 、 Figure 2 、 Figure 10 and Figure 11 As shown, the smoke hood 7 is located at the lower end of the first mesh plate and is fixedly connected to a guide plate 28. The lower end of the guide plate 28 is fixedly connected to a collecting tank 29. The lower end of the collecting tank 29 is provided with a drain pipe 30. The drain pipe 30 passes through the smoke hood 7 and is connected to the water storage tank 3. The collecting tank 29 will collect the filtered water to prevent the water from dripping onto the food and affecting the taste of the food. By discharging the separated water into the water storage tank 3, the recycling of water can be further improved.

[0046] For further information, see Figure 1 and Figure 4As shown, a water collecting tank 42 is provided on one side of the frame body 1, and a water inlet pipe for replenishing water to the water collecting tank 42 is provided on one side of the water collecting tank 42. The water collecting tank 42 is communicated with the water storage tank 3, and the water in the water storage tank 3 can be further replenished through the water collecting tank 42. A steam storage chamber 43 is provided on one side of the frame body 1, and a plurality of shunt pipes 44 are provided on the steam storage chamber 43. The side wall of the frame body 1 is provided with a plurality of air inlets 45 distributed at equal intervals, and the air inlets 45 are connected to the shunt pipes 44 in a one-to-one correspondence. By setting the steam storage chamber 43, the steam is first input into the steam storage chamber 43, and then the steam is input into various parts of the steaming equipment, so that the stability of the input steam can be guaranteed, and the gas supply hose 24 is connected to the steam storage chamber 43.

[0047] Throughout this specification, references to terms such as "one embodiment," "example," and "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0048] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A tunnel-type steaming device for steamed dumplings, comprising a frame body (1) and a heat-insulating cover (2) mounted on the frame body (1), characterized in that: The frame body (1) is provided with symmetrically distributed water storage tanks (3), the two ends of the heat preservation cover (2) are located in the water storage tanks (3), and the water storage tanks (3) water-seal the heat preservation cover (2). The frame body (1) is provided with a lifting frame (4), and the top of the lifting frame (4) is provided with a lifting mechanism for driving the heat preservation cover (2) to rise and fall. The lifting frame (4) is provided with a limiting mechanism (5) for limiting the heat preservation cover (2). The heat preservation cover (2) is provided with a condensed water collecting device connected to the water storage tank (3). The device (6) comprises smoke collecting hoods (7) connected to the heat-insulating hood (2) on both sides of the frame body (1), an air extraction pump (8) being provided above the smoke collecting hood (7), the smoke collecting hood (7) and the air extraction pump (8) being connected via an exhaust pipe (9), a first mesh plate and a second mesh plate (10) located at the upper end of the first mesh plate being provided in the smoke collecting hood (7), a spraying and pressing mechanism being provided between the first mesh plate and the second mesh plate (10), and a driving mechanism for driving the spraying and pressing mechanism to perform reciprocating motion being provided on the smoke collecting hood (7).

2. The tunnel-type steaming equipment for steamed dumplings according to claim 1, characterized in that: The first mesh plate comprises a left mesh plate (11) and a right mesh plate (12), the ends of the left mesh plate (11) and the right mesh plate (12) being close to each other are rotatably matched with the smoke hood (7), and the ends of the left mesh plate (11) and the right mesh plate (12) being away from each other are in contact with the inner wall of the smoke hood (7), the right mesh plate (12) is fixedly connected to a driving rod (13), the driving rod (13) is fixedly connected to a driving gear (14), the upper part of the left mesh plate (11) is fixedly connected to a driven gear (15), the driving gear (14) is meshed with the driven gear (15), one end of the driving rod (13) extends out of the smoke hood (7) and is fixedly connected to a crank handle (16), and the second mesh plate (10) is fixedly connected to the inner wall of the smoke hood (7).

3. The tunnel-type steaming equipment for steamed dumplings according to claim 2, characterized in that: The smoke collecting hood (7) is provided with a first limiting block (17), and the first limiting block (17) is provided with a limiting groove (18) engaged with the crank handle (16).

4. The tunnel-type steaming equipment for steamed dumplings according to claim 1, characterized in that: The spraying mechanism comprises two support rods (19) fixedly connected between the first mesh plate and the second mesh plate (10), a slide groove (20) is provided on the opposite side of the two support rods (19), a support seat (21) is installed between the two support rods (19), symmetrically distributed protrusions (22) are fixedly connected to the support seat (21), the protrusions (22) are slidably matched with the slide groove (20), the lower end of the support seat (21) is fixedly connected to symmetrically distributed spraying pipes (23), a gas hose (24) is installed on one side of the smoke hood (7), and the gas hose (24) is connected to the upper end of the support seat (21).

5. The tunnel-type steaming equipment for steamed dumplings according to claim 4, characterized in that: The driving mechanism comprises a first driving motor (25) fixedly connected to the smoke collecting hood (7), the output end of the first driving motor (25) extends into the smoke collecting hood (7) and is fixedly connected to a screw rod (26), the lower end of the support seat (21) is fixedly connected to a connecting block (27), and the screw rod (26) passes through the connecting block (27) and is threadedly engaged with the connecting block (27).

6. The tunnel-type steaming equipment for steamed dumplings according to claim 4, characterized in that: The smoke collecting hood (7) is fixedly connected to a guide plate (28) at the lower end of the first mesh plate, the lower end of the guide plate (28) is fixedly connected to a collecting trough (29), the lower end of the collecting trough (29) is provided with a drainage pipe (30), and the drainage pipe (30) passes through the smoke collecting hood (7) and is connected to the water storage tank (3).

7. The tunnel-type steaming equipment for steamed dumplings according to claim 1, characterized in that: The driving mechanism includes a plurality of second driving motors (31) fixedly connected to the top of the lifting frame (4), the output end of the second driving motor (31) is fixedly connected to a driving wheel (32), a lifting rope (33) is wound around the driving wheel (32), and a hook (34) for the lifting rope (33) to pass through is provided on the heat preservation cover (2).

8. The tunnel-type steaming equipment for steamed dumplings according to claim 1, characterized in that: The limiting mechanism (5) comprises a rotating cylinder (35) arranged on a lifting frame (4), one end of the rotating cylinder (35) is fixedly connected to a second limiting block (36), and the lifting frame (4) is provided with a sensor (37) at the lower end of the rotating cylinder (35), and the sensor (37) is electrically connected to the rotating cylinder (35).

9. The tunnel-type steaming equipment for steamed dumplings according to claim 1, characterized in that: An air outlet (38) is provided at the upper end of the heat-insulating cover (2), and the condensed water collecting device (6) includes a three-way pipe (39) fixedly connected to the air outlet (38). Square condensing tubes (40) are fixed to both left and right ends of the three-way pipe (39), and the condensing tubes are in contact with the upper surface of the heat-insulating cover (2). The lower end of the condensing tubes is connected to the water storage tank (3), and the side wall of the condensing tubes is fixedly connected to a heat sink (41).

10. The tunnel-type steaming equipment for steamed dumplings according to claim 4, characterized in that: A water collecting box (42) is provided on one side of the frame body (1), and the water collecting box (42) and the water storage tank (3) are communicated with each other. A steam storage chamber (43) is provided on one side of the frame body (1), and a plurality of shunt pipes (44) are provided on the steam storage chamber (43). A plurality of air inlets (45) distributed at equal intervals are provided on the side wall of the frame body (1), and the air inlets (45) are connected to the shunt pipes (44) in a one-to-one corresponding manner. The air delivery hose (24) is connected to the steam storage chamber (43).

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