Waste heat recovery device for distributed energy

Abstract

The utility model discloses a waste heat recovery device for distributed energy, which relates to the technical field of waste heat recovery and comprises a water sump, a water inlet pipe and a water outlet pipe penetrate through the top and the bottom of the water sump respectively and are fixedly connected with the top and the bottom of the water sump, and a motor is fixedly mounted at the top of the water sump through a mounting plate. The waste gas filtering and conveying mechanism is arranged, so that when a motor is started to drive a stirring shaft to rotate to stir water in a water bin, a gas suction pipe sucks waste gas in a collecting box into the pressure bin through cooperation of a rotating gear, a toothed bar, the pressure bin and other components; waste gas generated during fuel combustion is sucked by a waste gas pipe and enters a collecting box, a filter screen can prevent particulate matter from entering a gas suction pipe, waste gas in a pressure bin enters a gas inlet pipe through a gas outlet pipe and finally enters a spiral heat exchange pipe to heat water in a water bin, the heated water can be used for other purposes, and the waste heat recovery effect is effectively achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat recovery, and particularly relates to a waste heat recovery device for distributed energy. Background Technique

[0002] Distributed energy adopts advanced energy conversion technologies, tries its best to reduce pollutant emissions, and decentralizes the emissions to facilitate absorption by surrounding vegetation. At the same time, taking advantage of its small emissions and low emission density, distributed energy can realize resource recycling of the main emissions.

[0003] However, the current utilization rate of distributed energy during use is relatively low. For example, the waste gas generated during fuel combustion will carry a large amount of heat. If the waste gas is directly discharged, it will waste the heat, which is not conducive to environmental protection and energy conservation and needs to be improved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a waste heat recovery device for distributed energy, which solves the existing problems.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model relates to a waste heat recovery device for distributed energy, which comprises a water tank. The top and bottom of the water tank are respectively penetrated and fixedly connected with a water inlet pipe and a water outlet pipe. The top of the water tank is fixedly installed with a motor through a mounting plate. The motor is fixedly connected with a stirring shaft through its output shaft. The stirring shaft penetrates and is rotatably connected with the water tank. The two sides of the water tank are respectively penetrated and fixedly connected with an air inlet pipe and an exhaust pipe. A heat exchange pipe is arranged inside the water tank. The ends of the air inlet pipe and the exhaust pipe close to the inside of the water tank are respectively penetrated and fixedly connected with the two ends of the heat exchange pipe. An exhaust gas filtering and conveying mechanism is arranged on the side surface of the water tank; The exhaust gas filtering and conveying mechanism comprises a pressure chamber, a hydraulic chamber, a collection box and a rotating gear. The pressure chamber and the collection box are both fixedly connected to the side surface of the water tank through a support plate. A return spring is arranged inside the pressure chamber. A piston plate is slidably connected inside the pressure chamber through a return spring piston. A sliding rod is slidably connected to the top of the pressure chamber in a piston manner. The bottom of the sliding rod is fixedly connected with the top of the piston plate. The hydraulic chamber is fixedly connected to the side surface of the water tank through a bracket. A pull rod is slidably connected to one end inside the hydraulic chamber in a piston manner. The end of the pull rod away from the hydraulic chamber is fixedly connected with a toothed rod. A connecting rod is slidably connected to the other end inside the hydraulic chamber in a piston manner. The bottom of the connecting rod is fixedly connected with the top of the sliding rod. The two sides of the pressure chamber are respectively penetrated and fixedly connected with an air suction pipe and an air outlet pipe. The end of the air suction pipe away from the pressure chamber is penetrated and fixedly connected with the collection box. The end of the air outlet pipe away from the pressure chamber is penetrated and fixedly connected with the air inlet pipe. A waste gas pipe is fixedly connected to the side of the collection box away from the air suction pipe. A filter screen is arranged on the inner wall of the collection box. The rotating gear is fixedly connected to the surface of the stirring shaft. A cleaning mechanism is arranged on the top of the collection box.

[0007] Further, the whole heat exchange pipe is located inside the water tank, and the overall shape of the heat exchange pipe is spiral. When hot gas enters the heat exchange pipe, the heat exchange pipe will transfer heat to the water in the water tank, and the spiral heat exchange pipe has a large contact area with the water.

[0008] Further, the rotating gear is an incomplete gear, and the teeth on the toothed rod are adapted to the teeth on the rotating gear. When the rotating gear rotates and meshes with the toothed rod, it will drive the toothed rod to move to the right.

[0009] Further, check valves are arranged inside both the air suction pipe and the air outlet pipe. The check valve in the air suction pipe is unidirectionally conductive towards the inside of the pressure chamber, and the check valve in the air outlet pipe is unidirectionally conductive towards the air inlet pipe. When a negative pressure is formed in the pressure chamber, gas will be sucked into the pressure chamber through the air suction pipe, and when the pressure chamber is squeezed, the gas inside it will be discharged through the air outlet pipe.

[0010] Further, the whole filter screen is square, and the filter screen is located at the connection between the air suction pipe and the collection box. When the waste gas enters the air suction pipe through the filter screen, the filter screen will filter the waste gas and block the particulate matter from entering the air suction pipe.

[0011] Further, the cleaning mechanism includes a pneumatic chamber. Both ends of the pneumatic chamber penetrate and are fixedly connected to the collection box and the pressure chamber respectively. An airbag is arranged at one end of the pneumatic chamber. A push rod is slidably connected to the piston inside the other end of the pneumatic chamber. A brush is fixedly connected to the bottom of the push rod.

[0012] Further, the airbag is located above the piston plate, and the airbag is in an inflated state in the initial state. When the piston plate moves upward, it will squeeze the airbag, and the air pressure inside the airbag will enter the pneumatic chamber to push the push rod to move downward.

[0013] Further, the brush is located inside the collection box, and the bristles of the brush are close to the filter screen. When the brush moves up and down, its bristles will clean the filter screen.

[0014] The utility model has the following beneficial effects:

[0015] 1. By providing a waste gas filtering and conveying mechanism, when the motor is started to drive the stirring shaft to rotate and stir the water in the water tank, the air suction pipe will also suck the waste gas in the collection box into the pressure chamber through the cooperation of components such as the rotating gear, the rack, and the pressure chamber. The waste gas pipe sucks the waste gas generated during fuel combustion into the collection box. The filter screen will block the particulate matter from entering the air suction pipe. The waste gas in the pressure chamber then enters the intake pipe through the air outlet pipe and finally enters the spiral heat exchange pipe to heat the water in the water tank. The heated water can be used for other purposes, effectively achieving the effect of waste heat recovery.

[0016] 2. By providing a cleaning mechanism, when the piston plate moves up and down repeatedly to form a negative pressure in the pressure chamber and squeeze the waste gas in the pressure chamber, the brush will also move up and down repeatedly to clean the filter screen through the cooperation of components such as the airbag and the pneumatic chamber, preventing the filter screen from being blocked and affecting the passage of waste gas.

[0017] Of course, when implementing any product of the utility model, it is not necessarily required to achieve all the above advantages simultaneously. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is a three-dimensional sectional view of the overall structure of the present utility model;

[0021] Figure 3 is a three-dimensional schematic diagram of the structure of the waste gas filtering and conveying mechanism of the present utility model;

[0022] Figure 4 is a three-dimensional sectional view of the structure of the waste gas filtering and conveying mechanism of the present utility model;

[0023] Figure 5 is a three-dimensional schematic diagram of the structure of the cleaning mechanism of the present utility model.

[0024] In the drawings, the list of components represented by each reference numeral is as follows:

[0025] 1, water tank; 2, water inlet pipe; 3, water outlet pipe; 4, motor; 5, stirring shaft; 6, air inlet pipe; 7, heat exchange pipe; 8, exhaust pipe; 9, waste gas filtering and conveying mechanism; 91, pressure chamber; 92, return spring; 93, piston plate; 94, sliding rod; 95, hydraulic chamber; 96, pull rod; 97, toothed rod; 98, connecting rod; 99, suction pipe; 910, outlet pipe; 911, collection box; 912, waste gas pipe; 913, filter screen; 914, rotating gear; 10, cleaning mechanism; 101, air pressure chamber; 102, airbag; 103, push rod; 104, brush. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0027] Please refer to Figures 1-5, the utility model is a waste heat recovery device for distributed energy, including a water storage tank 1. The top and bottom of the water storage tank 1 are respectively penetrated and fixedly connected with a water inlet pipe 2 and a water outlet pipe 3. The top of the water storage tank 1 is fixedly installed with a motor 4 through a mounting plate. The motor 4 is fixedly connected with a stirring shaft 5 through its output shaft. The stirring shaft 5 penetrates and is rotatably connected with the water storage tank 1. Both sides of the water storage tank 1 are respectively penetrated and fixedly connected with an air inlet pipe 6 and an exhaust pipe 8. A heat exchange pipe 7 is arranged inside the water storage tank 1. One ends of the air inlet pipe 6 and the exhaust pipe 8 close to the inside of the water storage tank 1 are respectively penetrated and fixedly connected with both ends of the heat exchange pipe 7. An exhaust gas filtering and conveying mechanism 9 is arranged on the side of the water storage tank 1; The exhaust gas filtering and conveying mechanism 9 includes a pressure chamber 91, a hydraulic chamber 95, a collection box 911 and a rotating gear 914. The pressure chamber 91 and the collection box 911 are both fixedly connected to the side of the water storage tank 1 through a support plate. A return spring 92 is arranged inside the pressure chamber 91. A piston plate 93 is slidably connected with a piston inside the pressure chamber 91 through the return spring 92. A slide rod 94 is slidably connected with the piston at the top of the pressure chamber 91. The bottom of the slide rod 94 is fixedly connected with the top of the piston plate 93. The hydraulic chamber 95 is fixedly connected to the side of the water storage tank 1 through a bracket. A pull rod 96 is slidably connected with a piston inside one end of the hydraulic chamber 95. One end of the pull rod 96 far from the hydraulic chamber 95 is fixedly connected with a rack 97. A connecting rod 98 is slidably connected with a piston inside the other end of the hydraulic chamber 95. The bottom of the connecting rod 98 is fixedly connected with the top of the slide rod 94. Both sides of the pressure chamber 91 are respectively penetrated and fixedly connected with an air suction pipe 99 and an air outlet pipe 910. One end of the air suction pipe 99 far from the pressure chamber 91 is penetrated and fixedly connected with the collection box 911. One end of the air outlet pipe 910 far from the pressure chamber 91 is penetrated and fixedly connected with the air inlet pipe 6. A waste gas pipe 912 is fixedly connected to one side of the collection box 911 far from the air suction pipe 99. A filter screen 913 is arranged on the inner wall of the collection box 911. The rotating gear 914 is fixedly connected to the surface of the stirring shaft 5. A cleaning mechanism 10 is arranged on the top of the collection box 911.

[0028] The whole heat exchange pipe 7 is located inside the water storage tank 1, and the overall shape of the heat exchange pipe 7 is spiral. When hot gas enters the heat exchange pipe 7, the heat exchange pipe 7 will transfer heat to the water in the water storage tank 1, and the spiral heat exchange pipe 7 has a large contact area with water.

[0029] The rotating gear 914 is an incomplete gear, and the teeth on the rack 97 are adapted to the teeth on the rotating gear 914. When the rotating gear 914 rotates and meshes with the rack 97, it will drive the rack 97 to move to the right.

[0030] One-way valves are provided inside both the air suction pipe 99 and the air outlet pipe 910. The one-way valve in the air suction pipe 99 conducts unidirectionally towards the inside of the pressure chamber 91, and the one-way valve in the air outlet pipe 910 conducts unidirectionally towards the intake pipe 6. When a negative pressure is formed in the pressure chamber 91, gas is sucked into the pressure chamber 91 through the air suction pipe 99, and when the pressure chamber 91 is squeezed, the gas inside it is discharged through the air outlet pipe 910.

[0031] The filter net 913 is square as a whole, and the filter net 913 is located at the connection between the air suction pipe 99 and the collection box 911. When the waste gas enters the air suction pipe 99 through the filter net 913, the filter net 913 will filter the waste gas and block particulate matter from entering the air suction pipe 99.

[0032] The cleaning mechanism 10 includes an air pressure chamber 101. Both ends of the air pressure chamber 101 penetrate and are fixedly connected to the collection box 911 and the pressure chamber 91 respectively. An airbag 102 is provided at one end of the air pressure chamber 101, and a push rod 103 is slidably connected to a piston inside the other end of the air pressure chamber 101. A brush 104 is fixedly connected to the bottom of the push rod 103.

[0033] The airbag 102 is located above the piston plate 93, and the airbag 102 is in an inflated state in the initial state. When the piston plate 93 moves upward, it will squeeze the airbag 102, and the air pressure inside the airbag 102 will enter the air pressure chamber 101 to push the push rod 103 to move downward.

[0034] The brush 104 is located inside the collection box 911, and the bristles of the brush 104 are close to the filter net 913. When the brush 104 moves up and down, its bristles will clean the filter net 913.

[0035] A specific application of this embodiment is as follows: Water is added into the water sump 1 through the water inlet pipe 2, the water outlet pipe 3 is sealed, the waste gas pipe 912 is connected to the pipe for discharging waste gas during fuel combustion, the motor 4 is started to drive the stirring shaft 5 to rotate. The rotation of the stirring shaft 5 agitates the water in the water sump 1, and the rotation of the stirring shaft 5 also drives the rotation of the rotating gear 914. When the rotating gear 914 rotates and meshes with the toothed rod 97, it drives the toothed rod 97 to move to the right. The rightward movement of the toothed rod 97 drives the pull rod 96 to move to the right. The rightward movement of the pull rod 96 drives the connecting rod 98 to move upward through the hydraulic pressure in the hydraulic chamber 95. The upward movement of the connecting rod 98 drives the slide rod 94 and the piston plate 93 to move upward, and the return spring 92 is stretched. The upward movement of the piston plate 93 causes a negative pressure to be formed in the pressure chamber 91, so that the waste gas in the collection box 911 is sucked into the pressure chamber 91 through the suction pipe 99. The waste gas pipe 912 sucks the waste gas generated during fuel combustion into the collection box 911. The filter screen 913 blocks the particulate matter from entering the suction pipe 99. When the rotating gear 914 rotates to the part without teeth and disengages from the toothed rod 97, the return spring 92 rebounds and drives the piston plate 93 to move downward to restore. The downward movement of the piston plate 93 drives the slide rod 94 and the connecting rod 98 to move downward to restore. At this time, the hydraulic pressure in the hydraulic chamber 95 drives the pull rod 96 and the toothed rod 97 to move to the left to restore, thus forming a cycle. When the piston plate 93 moves downward to restore, it squeezes the waste gas in the pressure chamber 91, so that the waste gas is discharged into the intake pipe 6 through the outlet pipe 910 and enters the spiral heat exchange pipe 7 through the intake pipe 6, and finally is discharged through the exhaust pipe 8. When the waste gas enters the heat exchange pipe 7, the heat exchange pipe 7 transfers the heat in the waste gas to the water in the water sump 1, heating the water in the water sump 1. The heated water can be used for other purposes, effectively achieving the effect of waste heat recovery. When the piston plate 93 moves upward, it squeezes the airbag 102. The air pressure in the airbag 102 enters the air pressure chamber 101 and pushes the push rod 103 to move downward. The downward movement of the push rod 103 drives the brush 104 to move downward. When the piston plate 93 moves downward and leaves the airbag 102, the airbag 102 rebounds and the air pressure returns to the airbag 102. At this time, the push rod 103 drives the brush 104 to move upward to restore. During the up and down movement of the brush 104, its bristles clean the filter screen 913 to prevent the filter screen 913 from being blocked.

[0036] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A waste heat recovery device for distributed energy, comprising a water sump (1), characterized in that: The top and bottom of the water sump (1) are respectively penetrated and fixedly connected with a water inlet pipe (2) and a water outlet pipe (3). The top of the water sump (1) is fixedly installed with a motor (4) through a mounting plate. The motor (4) is fixedly connected with a stirring shaft (5) through its output shaft. The stirring shaft (5) penetrates and is rotatably connected with the water sump (1). The two sides of the water sump (1) are respectively penetrated and fixedly connected with an air inlet pipe (6) and an exhaust pipe (8). A heat exchange pipe (7) is arranged inside the water sump (1). The ends of the air inlet pipe (6) and the exhaust pipe (8) close to the inside of the water sump (1) are respectively penetrated and fixedly connected with the two ends of the heat exchange pipe (7). A waste gas filtering and conveying mechanism (9) is arranged on the side of the water sump (1); The waste gas filtering and conveying mechanism (9) includes a pressure chamber (91), a hydraulic chamber (95), a collection box (911) and a rotating gear (914). The pressure chamber (91) and the collection box (911) are both fixedly connected to the side of the water sump (1) through support plates. A return spring (92) is arranged inside the pressure chamber (91). A piston plate (93) is slidably connected to the inside of the pressure chamber (91) through the return spring (92). A slide rod (94) is slidably connected to the top of the pressure chamber (91) in a piston manner. The bottom of the slide rod (94) is fixedly connected to the top of the piston plate (93). The hydraulic chamber (95) is fixedly connected to the side of the water sump (1) through a bracket. A pull rod (96) is slidably connected to one end inside the hydraulic chamber (95) in a piston manner. The end of the pull rod (96) far from the hydraulic chamber (95) is fixedly connected to a rack (97). A connecting rod (98) is slidably connected to the other end inside the hydraulic chamber (95) in a piston manner. The bottom of the connecting rod (98) is fixedly connected to the top of the slide rod (94). The two sides of the pressure chamber (91) are respectively penetrated and fixedly connected with an air suction pipe (99) and an air outlet pipe (910). The end of the air suction pipe (99) far from the pressure chamber (91) is penetrated and fixedly connected with the collection box (911). The end of the air outlet pipe (910) far from the pressure chamber (91) is penetrated and fixedly connected with the air inlet pipe (6). A waste gas pipe (912) is fixedly connected to the side of the collection box (911) far from the air suction pipe (99). A filter screen (913) is arranged on the inner wall of the collection box (911). The rotating gear (914) is fixedly connected to the surface of the stirring shaft (5). A cleaning mechanism (10) is arranged on the top of the collection box (911).

2. The waste heat recovery device for distributed energy according to claim 1, wherein, The whole heat exchange pipe (7) is located inside the water sump (1), and the overall shape of the heat exchange pipe (7) is spiral.

3. The waste heat recovery device for distributed energy according to claim 2, wherein, The rotating gear (914) is an incomplete gear, and the teeth on the rack (97) are adapted to the teeth on the rotating gear (914).

4. A waste heat recovery device for distributed energy according to claim 3, characterized in that: One-way valves are arranged inside both the air suction pipe (99) and the air outlet pipe (910). The one-way valve in the air suction pipe (99) is unidirectionally conductive towards the inside of the pressure chamber (91), and the one-way valve in the air outlet pipe (910) is unidirectionally conductive towards the air inlet pipe (6).

5. The waste heat recovery device for distributed energy according to claim 4, characterized in that, The filter screen (913) is square as a whole, and the filter screen (913) is located at the connection between the suction pipe (99) and the collection box (911).

6. The waste heat recovery device for distributed energy according to claim 5, characterized in that, The cleaning mechanism (10) includes a pneumatic chamber (101). Both ends of the pneumatic chamber (101) penetrate and are fixedly connected to the collection box (911) and the pressure chamber (91) respectively. An airbag (102) is arranged at one end of the pneumatic chamber (101). A push rod (103) is connected to the inner piston of the other end of the pneumatic chamber (101) in a sliding manner. A brush (104) is fixedly connected to the bottom of the push rod (103).

7. The waste heat recovery device of distributed energy according to claim 6, characterized in that: The airbag (102) is located above the piston plate (93), and the airbag (102) is in an inflated state in the initial state.

8. The waste heat recovery device of distributed energy according to claim 7, characterized in that: The brush (104) is located in the collection box (911), and the bristles of the brush (104) are close to the filter screen (913).

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