Sludge fermentation tank heat recovery device

Abstract

The utility model belongs to the field of sewage treatment, and particularly relates to a heat recovery device of a sludge fermentation tank. The device specifically comprises a fermentation tank and a plurality of groups of heat recovery devices, each heat recovery device comprises a heat recovery pipe, a circulating pump and heat utilization equipment, the heat recovery pipes are fixed on a heat conducting plate in a coiled manner and then are suspended in the fermentation tank, and two ends of each heat recovery pipe are respectively connected with the circulating pipes and are connected with the heat utilization equipment through the circulating pumps arranged on the outer side of the fermentation tank. Connecting rods are arranged at the top ends of the heat recovery pipes; a movable support is arranged over the fermentation tank, a lifting device is arranged on the movable support, and the top end of the connecting rod is connected with the lifting device. The sludge heat recovery device has the advantages that the heat recovery pipe is lifted by the lifting device, so that the sludge can be conveniently turned and thrown.

Description

Technical Field

[0001] The utility model belongs to the field of sewage treatment, in particular to a heat recovery device for a sludge fermentation tank. Background Art

[0002] In the prior art, sludge fermentation tanks are often used to treat sewage, and most sludge fermentation tanks are open. Currently, the heat generated by the sludge during the fermentation process is not effectively recycled, resulting in the heat generated by the fermentation tank being lost in vain.

[0003] Sludge fermentation production equipment needs to be driven hydraulically. In winter, due to the low temperature, it takes a long time to preheat, which increases energy consumption. If the heat generated by fermentation is recovered and used for hydraulic equipment or other equipment that requires insulation and heating, energy consumption can be reduced and costs can be saved.

[0004] Chinese patent authorization publication number: CN 114269110 B discloses a separate pulsating heat pipe transmission device for heat recovery. It consists of a separate pulsating heat pipe evaporator section, a pulsating heat pipe condenser section, a thermodynamic conversion device, an insulated pulsating heat pipe connecting pipe, an insulated pulsating heat pipe return pipe, and a one-way valve. This device provides a good technical solution for thermal management and efficient recovery of heat dissipation of electronic components with high heat flux density in a small space.

[0005] The technical problem caused by this is that the sludge in the sludge fermentation tank needs to be turned over frequently to ensure the fermentation efficiency of the sludge. However, when a heat recovery pipe is placed in the sludge fermentation tank, it is not convenient to turn over the sludge in the sludge fermentation tank. Therefore, providing a heat recovery device that facilitates the turning over of the sludge fermentation tank is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a heat recovery device for a sludge fermentation tank.

[0007] The technical solution of the utility model is: a heat recovery device for a sludge fermentation tank, comprising a fermentation tank and several groups of heat recovery devices, the heat recovery device comprising a heat recovery pipe and a circulation pump, the heat recovery pipe coil is fixed on a heat conduction plate and suspended in the fermentation tank, a movable bracket is arranged directly above the fermentation tank, a lifting device is provided on the movable bracket, and the lifting device is connected to a connecting rod arranged on the top of the heat conduction plate.

[0008] Furthermore, the lifting device includes a slide rail, a first slider and a first pusher; the first pusher is arranged on the slide rail through the first slider, and the length of the slide rail is consistent with the length of the fermentation tank; a first pull rope is arranged on the first pusher, and the first pull rope is connected to the heat conduction plate through a connecting rod.

[0009] Furthermore, the first pull rope is provided with a suspension rod, which is hingedly connected to the connecting rod. One end of the suspension rod is connected to the first pull rope. When the first pusher is in operation, the first pull rope is gradually wound around the pusher coil or gradually unwound from the pusher coil; when the first pull rope is raised or lowered, it drives the suspension rod to rise or lower together.

[0010] Furthermore, a positioning device is provided on the movable bracket, and the positioning device includes a second slider and a second pusher. The second pusher is arranged on the slide rail through the second slider. A second pull rope is provided on the second pusher, and the second pull rope is connected to the bottom end of the heat conduction plate.

[0011] Furthermore, the heat recovery pipe is fixed on a heat conducting plate after being coiled in a spiral shape, and the heat conducting plate is made of metal material.

[0012] Furthermore, the shape of the heat conducting plate is preferably polygonal, such as a pentagon or hexagon, and the material is metal with good thermal conductivity, such as iron or aluminum. The heat conducting plate uses its good thermal conductivity to transfer heat to the heat recovery pipe, thereby assisting the heat recovery device in recovering heat.

[0013] Furthermore, both ends of the heat recovery pipe are connected to the circulation pipe respectively, and are connected to the heat-using equipment through a circulation pump arranged outside the fermentation tank. A hot and cold telescopic pipe is provided between the heat recovery pipe and the circulation pipe.

[0014] The beneficial effects of the utility model are as follows: a heat recovery pipe is arranged on the fermentation tank, and the heat is transported to the heat-using equipment through the circulation pipe connected to the circulation pump arranged outside the fermentation tank, so that the heat generated by the sludge fermentation tank can be recycled and utilized; a movable bracket is arranged directly above the fermentation tank, and a lifting device is arranged on the movable bracket, and the heat conduction plate is connected through the lifting device. When the sludge in the fermentation tank needs to be turned over, the heat conduction plate provided with the heat recovery pipe can be lifted by the lifting device. At this time, the heat conduction plate tube leaves the fermentation tank, which is convenient for turning over the sludge.

[0015] A positioning device is also provided on the mobile bracket, and a second pull rope is connected to the bottom end of the heat conduction plate. When the second pusher in the positioning device pulls up the bottom end of the heat conduction plate through the second pull rope, a hanger is provided on the first pull rope and is hingedly connected to the connecting rod, so that the heat conduction plate and the hanger are folded 90 degrees in the vertical direction. When the sludge in the fermentation tank needs to be turned over, the heat conduction plate and the heat recovery pipe do not hinder the sludge turning over. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the enlarged structure of the heat recovery pipe of the utility model;

[0018] Figure 3It is a schematic diagram of the right side view of the present invention.

[0019] In the picture:

[0020] 1. Fermentation tank 2. Heat recovery pipe 3. Heat conduction plate

[0021] 4. Circulation pipe 5. Circulation pump 6. Heat-using equipment

[0022] 7. Mobile bracket 8. Slide rail 9. First slide block

[0023] 10. First pusher 11. First pull rope 12. Hanging rod

[0024] 13. Connecting rod 14. Second slider 15. Second pusher

[0025] 16. Second pull rope DETAILED DESCRIPTION

[0026] A heat recovery device for a sludge fermentation tank includes a fermentation tank 1, which is 45 meters long and 2 meters wide. To ensure that the heat generated during the aerobic fermentation of sludge is recovered, a heat recovery pipe 2 can be suspended in the fermentation tank 1. The upper part of the heat recovery pipe 2 is connected to a circulation pipe 4, which is connected to a circulation pump 5 arranged outside the fermentation tank 1 through the circulation pipe 4. The circulation pump 5 transports heat to a heat-using device 6; the coil of the heat recovery pipe 1 is spirally shaped and bound to a hexagonal heat conducting plate 3, extending along two sides of the heat conducting plate 3 and connected to the bottom end of a connecting rod 13. The rising and falling of the connecting rod 13 can move the heat conducting plate up and down and further control the heat recovery pipe.

[0027] A movable bracket 7 is arranged directly above the fermentation tank 1, and a lifting device is provided on the movable bracket 1, which comprises a slide rail 8, a first slider 9 and a first pusher 10; the first pusher 10 is arranged on the slide rail 8 through the first slider 9, and the length of the slide rail 8 is consistent with the length of the fermentation tank 1. The slide rail 8 is located in the middle position directly above the fermentation tank 1, and a first pull rope 11 is arranged on the first pusher 10. The first pull rope 11 is wound around the pusher coil, and the tail end of the first pull rope 11 is connected to a hanging rod 12. A rope hole is provided on the top of the hanging rod 12. The hanging rod 12 is connected to the first pull rope 11 by passing a rope through the rope hole, and the bottom end of the hanging rod 12 is hinged to the connecting rod 13.

[0028] A positioning device is also provided on the movable bracket 7, and the positioning device includes a second slider 14 and a second pusher 15. The second pusher 15 is arranged on the slide rail 8 through the second slider 14. A second pull rope 16 is provided on the second pusher 15. The second pull rope 16 is wound around the pusher coil. A hook is provided at the end of the second pull rope 16, and the hook is connected to the pull ring at the bottom end of the heat conducting plate 3.

[0029] In Example 1, a heat recovery pipe 2 and a heat conducting plate 3 are suspended in a fermentation tank 1. The heat recovery pipe 2 and the heat conducting plate 3 can be moved up and down by a lifting device. When the heat in one place in the fermentation tank 1 has been recovered, the heat recovery pipe 2 and the heat conducting plate 3 are lifted up and leave the fermentation tank 1. They are moved on the slide rail 8 by the first slider 9 and the first pusher 10 for a distance of about 1.5 meters, and then descend into the fermentation tank 1 again to recover the heat in the second fermentation tank 1. The action here is repeated until all the heat in the fermentation tank 1 is recovered.

[0030] In Example 2, during the sludge fermentation process in the fermentation tank 1, the sludge needs to be regularly turned over to ensure the sludge fermentation effect. During the heat recovery work in the fermentation tank 1, the second pull rope 16 is connected by the pull ring at the bottom end of the heat conducting plate 3. When the pusher coil on the second pusher 15 is tightened, the second pull rope 16 is tightened, so that the bottom end of the suspension rod 12 and the connecting rod 13 are hinged to achieve a 90-degree folding. At this time, the heat recovery pipe 2 and the heat conducting plate 3 are moved out of the space of the fermentation tank 1 without affecting the use of the turning and throwing equipment;

[0031] In Example 3, a hot and cold telescopic pipe is provided between the heat recovery pipe 2 and the circulation pipe 4. The heat recovery pipe 2 is connected to a circulation pump 5 arranged outside the fermentation tank through the circulation pipe 4. The circulation pump 5 circulates the heated water in the heat recovery pipe 2, and uses the recovered heat in the heat-using equipment, thereby realizing heat recovery. Among them, a heat recovery device can be arranged every ten meters above the fermentation tank 1. When heat recovery is required, the heat recovery pipe 2 and the heat conducting plate 3 are inserted into the fermentation stack for heat recovery. Heat recovery can be carried out at the same time, and the recovery efficiency is higher.

[0032] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A heat recovery device for a sludge fermentation tank, characterized by: It includes a fermentation tank and several groups of heat recovery devices. The heat recovery device includes a heat recovery pipe and a circulation pump. The heat recovery pipe is fixed on the heat conduction plate after the coil and hung in the fermentation tank. A mobile bracket is set directly above the fermentation tank. A lifting device is provided on the mobile bracket. The lifting device is connected to the connecting rod set at the top of the heat conduction plate.

2. The heat recovery device for sludge fermentation tank according to claim 1, characterized in that: The lifting device includes a slide rail, a first slider and a first pusher; the first pusher is arranged on the slide rail through the first slider, and the length of the slide rail is consistent with the length of the fermentation tank; a first pull rope is arranged on the first pusher, and the first pull rope is connected to the heat conduction plate through a connecting rod.

3. The heat recovery device for sludge fermentation tank according to claim 2, characterized in that: A suspension rod is provided on the first pull rope, and the suspension rod is hingedly connected to the connecting rod.

4. The heat recovery device for a sludge fermentation tank according to claim 2, characterized in that: A positioning device is also provided on the mobile bracket, and the positioning device includes a second slider and a second pusher. The second pusher is arranged on the slide rail through the second slider. A second pull rope is provided on the second pusher, and the second pull rope is connected to the bottom end of the heat conducting plate.

5. The heat recovery device for a sludge fermentation tank according to claim 4, characterized in that: The heat recovery pipe is fixed on a heat conducting plate after being coiled in a spiral shape. The heat conducting plate is made of metal material.

6. The heat recovery device for a sludge fermentation tank according to any one of claims 1 to 5, characterized in that: The two ends of the heat recovery pipe are connected to the circulation pipe respectively, and are connected to the heat-using equipment through a circulation pump arranged outside the fermentation tank, wherein a hot and cold telescopic pipe is arranged between the heat recovery pipe and the circulation pipe.

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