Smoke preheating and recycling device of gas-steam boiler

Abstract

The invention discloses a flue gas preheating and recycling device of a gas-fired steam boiler, relates to the technical field of preheating and recycling devices, has the advantages of recycling heat of flue gas and simultaneously filtering impurity particles in the flue gas, and adopts the technical scheme that the flue gas preheating and recycling device further comprises a recycling box arranged on the outer wall of the upper end of a steam boiler body; two oppositely-distributed fixing plates are vertically arranged in the recycling box, a heat absorption water tank and a smoke absorption water tank are arranged on the two fixing plates correspondingly, the heat absorption water tank and the smoke absorption water tank are both conical barrels, the ends, with the small conicity, of the heat absorption water tank and the smoke absorption water tank are oppositely distributed, and a smoke through pipe is horizontally arranged in the recycling box in a penetrating mode; one end of the smoke passing pipe penetrates out of the recycling box and communicates with the upper end of the smoke outlet pipe through a hose.

Description

Technical Field

[0001] The invention relates to the technical field of preheating recovery devices, and in particular to a flue gas preheating recovery device for a gas-fired steam boiler. Background Art

[0002] A gas-fired steam boiler is a steam boiler that uses gas combustion for heating. When a gas-fired steam boiler is in operation, it will produce flue gas, which will carry a certain amount of heat and dissipate.

[0003] The Chinese patent with the announcement number CN219120605U discloses a gas steam boiler flue gas preheating and efficient recovery device, including a main body mechanism, a heating mechanism and an auxiliary mechanism, wherein the heating mechanism is located at the left end of the lower end of the inner end of the main body mechanism, the auxiliary mechanism is located at the left end of the lower end of the inner end of the main body mechanism, and the auxiliary mechanism is located in the middle of the inner end of the heating mechanism. The main body mechanism includes a boiler body, a smoke outlet, a box, a base and an anti-skid pad, the smoke outlet is fixedly arranged in the middle of the right end of the upper end of the boiler body, the box is located in the middle above the boiler body, and the base is fixedly installed at the lower end of the box. The gas steam boiler flue gas preheating and efficient recovery device, by installing a heating mechanism, is convenient for efficient recovery of flue gas heat, sufficient heat is provided for flue gas heat, and energy utilization is improved, and hot water is added to the steam boiler to improve work efficiency.

[0004] However, when the above device is used, it is unable to filter out foreign particles in the flue gas and does not have environmental protection performance.

[0005] Therefore, the applicant has developed a new technical solution in the actual production process to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide a flue gas preheating recovery device for a gas-fired steam boiler, which has the advantages of filtering foreign particles in the flue gas while recovering the heat of the flue gas.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a flue gas preheating and recovery device for a gas-fired steam boiler, comprising a steam boiler body and a smoke outlet pipe arranged at the upper end of the steam boiler body, and also comprising a recovery box arranged on the outer wall of the upper end of the steam boiler body, wherein two relatively distributed fixed plates are vertically arranged in the recovery box, and a hot water absorption tank and a smoking water tank are respectively arranged on the two fixed plates, wherein both the hot water absorption tank and the smoking water tank are conical cylinders, and the ends with smaller tapers are relatively distributed, and a smoke passage pipe is horizontally penetrated in the recovery box, and one end of the smoke passage pipe passes through the recovery box and is connected to the upper end of the smoke outlet pipe through a hose; The smoke-passing pipe is coaxially distributed with the hot water absorption tank and the smoking water tank and passes through the hot water absorption tank into the smoking water tank. One end of the smoke-passing pipe entering the smoking water tank is provided with a smoke guide pipe extending vertically downward. The recovery box is provided with a smoke exhaust pipe and a water pipe connected to the smoking water tank. The heights of the smoke exhaust pipe and the water pipe are higher than the water level in the smoking water tank.

[0008] By adopting the above technical scheme, the high-temperature flue gas will be input into the smoke passage pipe through the smoke outlet pipe. At this time, the smoke passage pipe first passes through the heat absorption water tank, so that the high-temperature flue gas dissipates heat to heat the water inside the heat absorption water tank, thereby achieving the purpose of recovering the heat of the flue gas. The heated water can then be used. After passing through the heat absorption water tank, the smoke passage pipe enters the smoking water tank, and the smoke is passed into the water layer of the smoking water tank through the smoke guide pipe. The water layer recovers the impurity particles in the smoke, thereby filtering out the impurity particles in the smoke, making it environmentally friendly. The filtered smoke is discharged from the smoking water tank and the recovery tank through the smoke exhaust pipe, thereby achieving the purpose of recovering the heat of the smoke and filtering the impurity particles in the smoke.

[0009] Preferably, a drain pipe is provided on the smoking water tank, the drain pipe is obliquely distributed along the inclination of the smoking water tank and is located below the end surface of the smoking water tank, the end of the drain pipe away from the smoking water tank passes through the recovery box, and the drain pipe is provided with a first stop valve at the end passing through the recovery box, the smoke-passing pipe is slidably connected to the smoking water tank and the hot water smoking tank, and the recovery box is provided with a driving member for driving the smoke-passing pipe to move horizontally back and forth.

[0010] Preferably, the driving member comprises an electric pole arranged on the outer wall of the recovery box, and the smoke vent pipe is provided with a vertical pole fixedly connected to the pole portion of the electric pole on the outer wall passing through the recovery box.

[0011] Preferably, the smoke guiding pipe comprises a fixed pipe connected to the smoke passage pipe and a movable pipe slidably connected to the outer wall of the fixed pipe, the opening at the lower end of the movable pipe is arranged in an arc shape distributed along the inner wall of the smoking water tank, and the lower end of the movable pipe is in contact with the inner wall of the smoking water tank, and a plurality of notches are provided on the outer wall of the lower end of the movable pipe for smoke discharge.

[0012] Preferably, the heat absorption tank is rotatably connected to the fixed plate, and a power part for driving the heat absorption tank to rotate is provided in the recovery tank.

[0013] Preferably, the power component includes a rotating shaft fixedly arranged on the end face of the hot water absorption tank with a larger taper, the rotating shaft is coaxially distributed with the hot water absorption tank, the rotating shaft is rotatably connected to the fixed plate and passes through a side of the fixed plate facing away from the hot water absorption tank, the rotating shaft is coaxially fixed with a driven gear at the end passing through the fixed plate, a motor is arranged in the recovery tank, a driving gear meshing with the driven gear is coaxially fixed on the rotating shaft of the motor, and the smoke vent passes through the hot water absorption tank after passing through the rotating shaft.

[0014] Preferably, the hot water absorption tank comprises a bottom plate fixedly arranged on a fixed plate and a conical sleeve rotatably arranged on the bottom plate, the bottom plate closes the tube mouth of the conical sleeve, the rotating shaft is fixed on the bottom plate and the smoke vent passes through the bottom plate and the conical sleeve, the bottom plate is respectively provided with a water inlet pipe and a water outlet pipe below the rotating shaft, the ends of the water inlet pipe and the water outlet pipe away from the bottom plate both pass through a recovery box, the water outlet pipe and the water inlet pipe are both provided with a second stop valve, and the water inlet pipe is provided with a water pump at the end of the water inlet pipe passing through the recovery box.

[0015] Preferably, the smoking water tank is rotatably connected to a fixed plate that fixes the smoking water tank. The smoking water tank includes a bottom plate fixed to the fixed plate and a conical cylinder rotatably connected to the bottom plate. The bottom plate closes the tube mouth of the conical cylinder. The smoke pipe passes through the conical cylinder and enters the smoking water tank. The smoke exhaust pipe is arranged on the bottom plate. When the smoking water tank rotates, the smoking water tank is driven to rotate through the connecting piece.

[0016] Preferably, the connecting member includes a connecting plate which is arranged on the outer wall of the smoke-passing pipe and distributed vertically, and the connecting plates are provided in two and are symmetrically distributed on the outer wall of the smoke-passing pipe, and the two connecting plates are distributed between the smoking water tank and the hot water absorption tank, and the upper and lower ends of the two connecting plates extend out of the outer wall of the smoke-passing pipe and are rotatably connected to a rotating drum at one end of the extension, and moving rods are rotatably connected inside the two rotating drums, and rotating wheels are coaxially fixed at both ends of the two moving rods, and the rotating wheels at both ends of the two moving rods respectively interfere with the outer walls of the hot water absorption tank and the smoking water tank, and interference members are provided at both ends of the moving rods so that the rotating wheels respectively interfere with the outer walls of the hot water absorption tank and the smoking water tank.

[0017] Preferably, the outer walls of the hot water absorption tank and the smoking water tank are both fixedly covered with anti-skid sleeves, and the rotating wheel contacts the outer wall of the anti-skid sleeves.

[0018] The beneficial effects of the present invention are as follows: the high-temperature flue gas will be input into the smoke passage pipe through the smoke outlet pipe. At this time, the smoke passage pipe first passes through the heat absorption tank, so that the high-temperature flue gas dissipates heat to heat the water inside the heat absorption tank, thereby achieving the purpose of recovering the heat of the flue gas, and then the heated water can be used. After passing through the heat absorption tank, the smoke passage pipe enters the smoking water tank, and the smoke is passed into the water layer of the smoking water tank through the smoke guide pipe. The water layer recovers the impurity particles in the smoke, thereby filtering out the impurity particles in the smoke, making it environmentally friendly. The filtered smoke is discharged from the smoking water tank and the recovery tank through the smoke exhaust pipe, thereby achieving the purpose of filtering the impurity particles in the smoke while recovering the heat of the smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of this embodiment; Figure 2 This is a schematic diagram of the structure of the recycling box in this embodiment; Figure 3 for Figure 2 The enlarged structural diagram of the middle A part; Figure 4 This is a schematic diagram of the structure of the smoke guide pipe in this embodiment; Figure 5 It is a schematic diagram of the structure of the movable cylinder in this embodiment.

[0021] Description of reference numerals: In the figure: 1, steam boiler body; 11, smoke outlet pipe; 12, recovery box; 121, fixed plate; 122, hot water absorption tank; 1221, bottom plate; 1222, conical sleeve; 123, smoking water tank; 1231, bottom plate; 1232, conical cylinder; 124, smoke pipe; 125, hose; 126, smoke guide pipe; 1261, fixed pipe; 1262, movable pipe; 1263, notch; 13, smoke exhaust pipe; 131. water pipe; 132. drainage pipe; 133. electric pole; 134. vertical pole; 14. rotating shaft; 141. driven gear; 142. motor; 143. driving gear; 144. water inlet pipe; 145. water outlet pipe; 15. connecting plate; 151. rotating drum; 152. moving rod; 153. rotating wheel; 154. moving drum; 155. guide strip; 156. slide groove; 157. compression spring; 16. anti-slip sleeve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0023] A flue gas preheating and recovery device for a gas-fired steam boiler, such as Figure 1 and Figure 2, comprising a steam boiler body 1 and a smoke outlet pipe 11 arranged at the upper end of the steam boiler body 1, and also comprising a recovery box 12 arranged on the outer wall of the upper end of the steam boiler body 1, the recovery box 12 being arranged on the outer wall of the upper end of the steam boiler body 1 and being located on one side of the smoke outlet pipe 11, two relatively distributed fixing plates 121 are vertically arranged in the recovery box 12, and a hot water absorption tank 122 and a smoking water tank 123 whose axes are located in the same straight line are respectively arranged on the two fixing plates 121, the hot water absorption tank 122 and the smoking water tank 123 are both conical cylinders 1232, and the ends with smaller tapers are relatively distributed, a smoke passage pipe 124 is horizontally penetrated in the recovery box 12, and one end of the smoke passage pipe 124 passes through the recovery box 12 and is connected to the upper end of the smoke outlet pipe 11 through a hose 125; like Figure 1 and Figure 2 The smoke pipe 124 is coaxially distributed with the hot water absorption tank 122 and the smoking water tank 123 and passes through the hot water absorption tank 122 to enter the smoking water tank 123. One end of the smoke pipe 124 entering the smoking water tank 123 is provided with a smoke guide pipe 126 extending vertically downward. The recovery box 12 is provided with a smoke exhaust pipe 13 and a water pipe 131 connected to the smoking water tank 123. The heights of the smoke exhaust pipe 13 and the water pipe 131 are higher than the water level in the smoking water tank 123. The water pipe 131 facilitates the water to enter the smoking water tank 123, and the smoke exhaust pipe 13 facilitates the smoke that has absorbed all the impurity particles to be discharged from the smoking water tank 123.

[0024] like Figure 1 and Figure 2 The high-temperature flue gas will be input into the smoke passage 124 through the smoke outlet pipe 11. At this time, the smoke passage 124 first passes through the heat absorption tank 122, so that the high-temperature flue gas dissipates heat to heat the water inside the heat absorption tank 122, thereby realizing the purpose of recovering the heat of the flue gas, and the heated water can be used later. In addition, in order to increase the time for the flue gas to pass through the heat absorption tank 122, the part of the smoke passage 124 located in the smoking water tank 123 can be set to be S-shaped, which is convenient for better heat dissipation of the flue gas. After passing through the heat absorption tank 122, the smoke passage 124 enters the smoking water tank 123, and the smoke is passed into the water layer of the smoking water tank 123 through the smoke guide pipe 126. The water layer recovers the impurity particles in the smoke, so that the impurity particles in the smoke can be filtered out, making it environmentally friendly. The filtered smoke is discharged from the smoking water tank 123 and the recovery box 12 through the smoke exhaust pipe 13, thereby realizing the purpose of recovering the heat of the smoke and filtering the impurity particles in the smoke at the same time.

[0025] like Figure 1 and Figure 2A drainage pipe 132 is provided on the smoking water tank 123. The drainage pipe 132 is obliquely distributed along the inclination of the smoking water tank 123 and is located below the end surface of the smoking water tank 123. At this time, it is convenient to replace the water in the smoking water tank 123, and in order to improve the adsorption effect of impurity particles in the smoking water tank 123, an activated carbon filter layer can be set in the smoke exhaust pipe 13; the end of the drainage pipe 132 away from the smoking water tank 123 passes through the recovery box 12, and the end of the drainage pipe 132 passing through the recovery box 12 is provided with a first stop valve (not shown in the figure), the smoke-passing pipe 124 is slidably connected with the smoking water tank 123 and the hot water absorption tank 122, that is, the smoke-passing pipe 124 can move horizontally back and forth in the smoking water tank 123 and the hot water absorption tank 122, and the recovery box 12 is provided with a driving member for driving the smoke-passing pipe 124 to move horizontally back and forth.

[0026] like Figure 1 and Figure 2 The driving member drives the smoke-passing pipe 124 to move back and forth, so as to change the outlet position of the smoke-guiding pipe 126 in the smoking water tank 123, so as to make the water in the smoking water tank 123 better absorb the impurity particles in the smoke. In addition, when the driving member drives the smoke-passing pipe 124 to move back and forth, if the portion of the smoke-passing pipe 124 in the hot water absorption tank 122 is set to be S-shaped, the length of the S-shaped distribution does not affect the horizontal reciprocating distance of the smoke-passing pipe 124, that is, the S-shaped smoke-passing pipe 124 will not collide with the inner wall of the hot water absorption tank 122 during the horizontal reciprocating movement of the smoke-passing pipe 124.

[0027] like Figure 1 and Figure 2 The driving member includes an electric pole 133 arranged on the outer wall of the recycling box 12, and a vertical pole 134 fixedly connected to the pole part of the electric pole 133 is arranged on the outer wall of the recycling box 12. At this time, the electric pole 133 drives the vertical pole 134 to move horizontally back and forth, which can drive the smoke vent 124 to move horizontally back and forth.

[0028] like Figure 2 and Figure 4 The smoke guide pipe 126 includes a fixed pipe 1261 connected to the smoke pipe 124 and a movable pipe 1262 slidably connected to the outer wall of the fixed pipe 1261. The opening of the lower end of the movable pipe 1262 is set to be an arc distributed along the inner wall of the smoking water tank 123, and the lower end of the movable pipe 1262 contacts the inner wall of the smoking water tank 123. The outer wall of the lower end of the movable pipe 1262 is provided with a plurality of notches 1263 for smoke exhaust. At this time, the smoke guide pipe 126 can make the arc of the lower end of the movable pipe 1262 slide along the inner wall of the smoking water tank 123 during the reciprocating movement of the smoke pipe 124, and the smoke is discharged from the notches 1263, which is convenient for exhaust. In addition, when the water in the smoking water tank 123 is replaced, the reciprocating movable pipe 1262 scrapes off the impurities on the inner wall of the smoking water tank 123, thereby facilitating the discharge of impurities.

[0029] like Figure 2 and Figure 3 The hot water absorption tank 122 is rotatably connected to the fixed plate 121 , and a power part for driving the hot water absorption tank 122 to rotate is provided in the recovery tank 12 .

[0030] like Figure 2 and Figure 3 The power part includes a rotating shaft 14 fixedly arranged on the end face of the hot water absorption tank 122 with a larger taper. The rotating shaft 14 is coaxially distributed with the hot water absorption tank 122. The rotating shaft 14 is rotatably connected to the fixed plate 121 and passes through the side of the fixed plate 121 away from the hot water absorption tank 122. The rotating shaft 14 is coaxially fixed with a driven gear 141 at the end passing through the fixed plate 121. A motor 142 is arranged in the recovery tank 12. A driving gear 143 meshing with the driven gear 141 is coaxially fixed on the rotating shaft of the motor 142. The smoke pipe 124 passes through the hot water absorption tank 122 after passing through the rotating shaft 14, that is, the horizontal reciprocating movement of the smoke pipe 124 will not be affected when the rotating shaft 14 rotates.

[0031] like Figure 2 and Figure 3 The motor 142 drives the driving gear 143 to rotate, so that the driving gear 143 drives the driven gear 141 to rotate, and then drives the rotating shaft 14 to rotate through the driven gear 141. At this time, the rotating shaft 14 is fixed to one side of the hot water absorption tank 122, so that the hot water absorption tank 122 rotates. The rotating hot water absorption tank 122 increases the water flow speed around the smoke pipe 124, thereby increasing the heat exchange efficiency.

[0032] like Figure 2 and Figure 3In order to discharge the hot water in the absorption water tank for use, and to facilitate the injection of cold water into the absorption water tank 122 again, the absorption water tank 122 includes a bottom plate 1221 fixedly arranged on the fixed plate 121 and a conical sleeve 1222 rotatably arranged on the bottom plate 1221. At this time, the conical sleeve 1222 has only one tube opening on the side with a larger taper. The bottom plate 1221 closes the tube opening of the conical sleeve 1222. The rotating shaft 14 is fixed on the bottom plate 1221 and the smoke pipe 124 passes through the bottom plate 1221 and the conical sleeve 1222. The bottom plate 1221 is respectively provided with an inlet pipe 144 and an outlet pipe 145 below the rotating shaft 14. The ends of the inlet pipe 144 and the outlet pipe 145 away from the bottom plate 1221 both pass through the recovery box 12, and the outlet pipe 145 and the inlet pipe 144 pass through the recovery box 12. A second stop valve is provided on the water pipe 144, and the second stop valve can be outside the recovery box 12 (not shown in the figure), and a water pump (not shown in the figure) is provided at the end of the water inlet pipe 144 that passes through the recovery box 12, and the water inlet pipe 144 is connected to the water tank through a pipeline at the end that passes through the recovery box 12, so that the water pump can pump the cold water in the water tank into the conical sleeve 1222. At this time, the water in the conical sleeve 1222 will submerge the smoke pipe 124. In addition, the water outlet pipe 145 guides the heated water in the conical sleeve 1222 out of the conical sleeve 1222. At this time, the water outlet pipe 145 can also be distributed along the inclination of the hot water absorption tank 122. The outlet pipe is located below the plate surface of the bottom plate 1221, so that the water outlet pipe 145 is distributed close to the inner wall of the conical sleeve 1222, which is convenient for all the hot water to be exported.

[0033] like Figure 2 and Figure 3 If the hot water absorption tank 122 drives the smoking water tank 123 to rotate when it rotates, the water in the smoking water tank 123 will also flow, which makes it easier to change the flow rate of the water in contact with the smoke guide pipe 126, which is beneficial for the water layer to absorb impurity particles. Therefore, the smoking water tank 123 is rotatably connected to the fixed plate 121 that fixes the smoking water tank 123. The smoking water tank 123 includes a bottom plate 1231 fixed on the fixed plate 121 and a conical cylinder 1232 rotatably connected to the bottom plate 1231. The conical cylinder 1232 also has a tube mouth only on the side with a larger taper. The bottom plate 1231 closes the tube mouth of the conical cylinder 1232. The smoke pipe 124 passes through the conical cylinder 1232 and enters the smoking water tank 123. The smoke exhaust pipe 13 and the water pipe 131 are both arranged on the bottom plate 1231. When the hot water absorption tank 122 rotates, the smoking water tank 123 is driven to rotate through the connecting piece.

[0034] like Figure 2 and Figure 3The connecting member includes a connecting plate 15 which is arranged on the outer wall of the smoke-passing pipe 124 and is vertically distributed. The connecting plates 15 are provided with two and are symmetrically distributed on the outer wall of the smoke-passing pipe 124. The two connecting plates 15 are distributed between the smoking water tank 123 and the hot water absorption tank 122. The upper and lower ends of the two connecting plates 15 extend out of the outer wall of the smoke-passing pipe 124 and are rotatably connected to a rotating drum 151 at one end of the extension. A moving rod 152 is rotatably connected in the two rotating drums 151. Both ends of the two moving rods 152 are coaxially fixed with a rotating wheel 153. The rotating wheels 153 at both ends of the two moving rods 152 respectively conflict with the outer walls of the hot water absorption tank 122 and the smoking water tank 123. In order to make the rotating wheel 153 conflict with the outer walls of the hot water absorption tank 122 and the smoking water tank 123, a conflicting member is provided at both ends of the moving rod 152 to make the rotating wheel 153 conflict with the outer walls of the hot water absorption tank 122 and the smoking water tank 123 respectively. At this time, the arrangement of the connecting plate 15 will not affect the horizontal reciprocating movement of the smoke passage pipe 124, that is, the connecting plate 15 will not collide with the hot water absorption tank 122 or the smoke pump.

[0035] like Figure 5 The abutment member comprises a moving cylinder 154 sleeved on the outer walls at both ends of the moving rod 152, a rotating wheel 153 is coaxially fixed on one end of the moving cylinder 154 away from the moving rod 152, a plurality of guide bars 155 distributed along the length direction of the moving cylinder 154 are arranged on the inner wall of the moving cylinder 154, a sliding groove 156 for the sliding of the guide bars 155 is arranged on the outer wall of the moving rod 152, a compression spring 157 is arranged on the bottom of the moving cylinder 154, one end of the compression spring 157 is fixedly connected to the inner bottom of the moving cylinder 154, and the other end is fixedly connected to the end of the moving rod 152, when the rotating wheel 153 abuts against the outer wall of the hot water absorption tank 122 or the smoking water tank 123, the compression spring 157 is in a compressed state, and the compression spring 157 causes the rotating wheel 153 to abut against the outer wall of the hot water absorption tank 122 or the smoking water tank 123.

[0036] like Figure 2 and Figure 3 and Figure 4 The outer walls of the hot water absorption tank 122 and the smoking water tank 123 are fixedly covered with an anti-skid cover 16, and the rotating wheel 153 is in conflict with the outer wall of the anti-skid cover 16.

[0037] like Figure 2 and Figure 3 and Figure 4 That is, after the hot water absorption tank 122 is driven by the motor 142, the rotating wheel 153 is driven to rotate through the anti-slip sleeve 16. The rotation of the rotating wheel 153 causes the moving rod 152 to rotate in the rotating drum 151, thereby causing the rotating wheel 153 that conflicts with the smoking water tank 123 to also rotate. At this time, the rotating rotating wheel 153 drives the smoking water tank 123 to rotate, thereby achieving the purpose of rotating the smoking water tank 123 together.

[0038] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A gas steam boiler flue gas preheating and recovery device, comprising a steam boiler body (1) and a flue gas outlet pipe (11) arranged at the upper end of the steam boiler body (1), characterized in that: It also includes a recovery box (12) arranged on the outer wall of the upper end of the steam boiler body (1), wherein two fixed plates (121) are vertically arranged in opposition to each other in the recovery box (12), and a hot water absorption tank (122) and a smoking water tank (123) are respectively arranged on the two fixed plates (121), wherein the hot water absorption tank (122) and the smoking water tank (123) are both conical cylinders (1232), and the ends with smaller tapers are opposite to each other, and a smoke passage pipe (124) is horizontally passed through the recovery box (12), and one end of the smoke passage pipe (124) passes through the recovery box (12) and is connected to the upper end of the smoke outlet pipe (11) through a hose (125); The smoke-passing pipe (124) is coaxially distributed with the hot water absorption tank (122) and the smoking water tank (123) and passes through the hot water absorption tank (122) to enter the smoking water tank (123); a smoke-guiding pipe (126) extending vertically downward is provided at one end of the smoke-passing pipe (124) entering the smoking water tank (123); a smoke exhaust pipe (13) and a water-passing pipe (131) connected to the smoking water tank (123) are provided on the recovery box (12); the heights of the smoke exhaust pipe (13) and the water-passing pipe (131) are higher than the water level in the smoking water tank (123).

2. The gas steam boiler flue gas preheating recovery device according to claim 1, characterized in that: The smoking water tank (123) is provided with a drainage pipe (132), the drainage pipe (132) is obliquely distributed along the inclination of the smoking water tank (123) and is located below the end surface of the smoking water tank (123), one end of the drainage pipe (132) away from the smoking water tank (123) passes through the recovery box (12), and the drainage pipe (132) is provided with a first stop valve at the end passing through the recovery box (12), the smoke-passing pipe (124) is slidably connected to the smoking water tank (123) and the hot water-absorbing water tank (122), and the recovery box (12) is provided with a driving member for driving the smoke-passing pipe (124) to move horizontally back and forth.

3. The gas steam boiler flue gas preheating recovery device according to claim 2, characterized in that: The driving member comprises an electric pole (133) arranged on the outer wall of the recovery box (12); the smoke vent pipe (124) is provided with a vertical pole (134) fixedly connected to the pole portion of the electric pole (133) on the outer wall passing through the recovery box (12).

4. The gas steam boiler flue gas preheating and recovery device according to claim 2 or 3, characterized in that: The smoke guide pipe (126) comprises a fixed pipe (1261) connected to the smoke passage pipe (124) and a movable pipe (1262) slidably connected to the outer wall of the fixed pipe (1261); the opening at the lower end of the movable pipe (1262) is arranged in an arc shape distributed along the inner wall of the smoking water tank (123); the lower end of the movable pipe (1262) contacts the inner wall of the smoking water tank (123); and a plurality of notches (1263) are provided on the outer wall of the lower end of the movable pipe (1262) for exhausting smoke.

5. The gas steam boiler flue gas preheating and recovery device according to claim 1, characterized in that: The heat absorption tank (122) is rotatably connected to the fixed plate (121), and a power component for driving the heat absorption tank (122) to rotate is provided in the recovery tank (12).

6. The gas steam boiler flue gas preheating and recovery device according to claim 5, characterized in that: The power component comprises a rotating shaft (14) fixedly arranged on an end surface of a hot water absorption tank (122) having a larger taper, the rotating shaft (14) being coaxially distributed with the hot water absorption tank (122), the rotating shaft (14) being rotatably connected to a fixed plate (121) and passing through a side surface of the fixed plate (121) facing away from the hot water absorption tank (122), a driven gear (141) being coaxially fixedly arranged on the end of the rotating shaft (14) passing through the fixed plate (121), a motor (142) being arranged in the recovery tank (12), a driving gear (143) meshing with the driven gear (141) being coaxially fixedly arranged on the rotating shaft of the motor (142), and the smoke passage (124) passing through the rotating shaft (14) and then passing through the hot water absorption tank (122).

7. The gas steam boiler flue gas preheating and recovery device according to claim 6, characterized in that: The heat absorption tank (122) comprises a bottom plate (1221) fixedly mounted on a fixed plate (121) and a conical sleeve (1222) rotatably mounted on the bottom plate (1221); the bottom plate (1221) closes the tube opening of the conical sleeve (1222); the rotating shaft (14) is fixed on the bottom plate (1221); and the smoke vent (124) passes through the bottom plate (1221) and the conical sleeve (1222). The bottom plate (1221) is provided with a water inlet pipe (144) and a water outlet pipe (145) respectively below the rotating shaft (14); the ends of the water inlet pipe (144) and the water outlet pipe (145) away from the bottom plate (1221) both pass through the recovery box (12); the water outlet pipe (145) and the water inlet pipe (144) are both provided with a second stop valve; and the water inlet pipe (144) is provided with a water pump at the end passing through the recovery box (12).

8. The gas steam boiler flue gas preheating and recovery device according to claim 6, characterized in that: The smoking water tank (123) is rotatably connected to a fixed plate (121) that fixes the smoking water tank (123). The smoking water tank (123) comprises a bottom plate (1231) fixed to the fixed plate (121) and a conical cylinder (1232) rotatably connected to the bottom plate (1231). The bottom plate (1231) closes the cylinder mouth of the conical cylinder (1232). The smoke passage pipe (124) passes through the conical cylinder (1232) and enters the smoking water tank (123). The smoke exhaust pipe (13) is arranged on the bottom plate (1231). When the smoking water tank (122) rotates, the smoking water tank (123) is driven to rotate via a connecting piece.

9. The gas steam boiler flue gas preheating and recovery device according to claim 8, characterized in that: The connecting member comprises a connecting plate (15) arranged on the outer wall of the smoke-passing pipe (124) and distributed vertically. The connecting plates (15) are provided in two and are symmetrically distributed on the outer wall of the smoke-passing pipe (124). The two connecting plates (15) are distributed between the smoking water tank (123) and the hot water tank (122). The upper and lower ends of the two connecting plates (15) extend out of the outer wall of the smoke-passing pipe (124) and the extended ends are rotatably connected to a rotating drum (151). The two rotating drums (151) are 151) are rotatably connected to a moving rod (152), and rotating wheels (153) are coaxially fixed at both ends of the two moving rods (152). The rotating wheels (153) at both ends of the two moving rods (152) respectively contact the outer walls of the hot water absorption tank (122) and the smoking water tank (123), and a contact piece is provided at both ends of the moving rod (152) so that the rotating wheel (153) contacts the outer walls of the hot water absorption tank (122) and the smoking water tank (123).

10. The gas steam boiler flue gas preheating and recovery device according to claim 9, characterized in that: The outer walls of the hot water absorption tank (122) and the smoking water tank (123) are both fixedly covered with an anti-slip sleeve (16), and the rotating wheel (153) is in contact with the outer wall of the anti-slip sleeve (16).

Images