Asphalt workshop heat recovery device

Abstract

The utility model relates to the technical field of asphalt workshops, and discloses an asphalt workshop heat recovery device which comprises an asphalt production pipeline, the outer side of the asphalt production pipeline is sleeved with a heat tracing pipeline, one side of the heat tracing pipeline is provided with a sealing assembly, a one-way valve is arranged below the asphalt production pipeline, and the one-way valve is arranged below the asphalt production pipeline. A connecting pipe is connected to the lower end of the one-way valve, a high-temperature hot water tank is arranged at the lower end of the connecting pipe, and a recovery device is installed on one side of the high-temperature hot water tank; the recycling device comprises a conveying pump, and a heating box is installed on one side of the conveying pump. According to the asphalt heat recovery system, redundant heat in the asphalt production pipeline is recycled through the recovery device, heating operation is conducted on other workshops, the environmental protection performance is improved, the sealing performance of the joint of the heat tracing pipeline and the asphalt production pipeline is guaranteed through the sealing assembly, leakage is prevented, and the sealing performance and normal operation of the heat recovery system are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of asphalt workshop technology, specifically to a heat recovery device for asphalt workshops. Background Technology

[0002] An asphalt workshop is a specialized facility for asphalt-related production and processing activities, playing a crucial role in the supply of materials for road construction, building waterproofing, and other fields.

[0003] In asphalt workshops, the production and processing of asphalt involves multiple high-temperature processes, such as heating, stirring, and reaction of raw materials. These processes release a large amount of heat. Currently, most asphalt workshops do not effectively recover and utilize this heat, so it is necessary to develop a heat recovery device for asphalt workshops that is easy to use.

[0004] Chinese Patent Publication No. CN214403897U discloses "A Heat Recovery and Utilization Device for a Textile Workshop," comprising a left shell and a right shell. A support rod is uniformly fixedly installed at one end of the interior of the left shell, and a placement cylinder is fixedly installed inside the right shell. A filter plate is placed inside the placement cylinder. A connecting rod is uniformly fixedly installed between the placement cylinder and the support rod. An adjusting ring is externally threaded between the left and right shells, and a retaining ring is fixedly installed inside the adjusting ring. When gas passes through the left shell, it blows the fan blades, causing the scraper to rotate, thus facilitating the scraping of dust off the filter plate for easy cleaning. The adjusting ring and retaining ring allow the retaining ring to move between the right shell and the placement cylinder during dust removal, making it easier to unscrew the sealing plug and clean the scraped dust, while also preventing high-temperature gas from harming the operator during cleaning.

[0005] The aforementioned existing technology, by incorporating an adjusting ring and a retaining ring, allows the retaining ring to move between the right housing and the placement cylinder during the cleaning of scraped dust. This facilitates the unscrewing of the sealing plug and the cleaning of the scraped dust, while also preventing high-temperature gases from harming operators during cleaning. However, the existing device lacks the function of recovering and reusing excess heat from the asphalt workshop. During asphalt production, a large amount of heat is lost and cannot be collected for workshop heating, resulting in the workshop needing to consume a large amount of extra energy to maintain the temperature in winter, thus reducing its environmental performance. Utility Model Content

[0006] The purpose of this invention is to provide a heat recovery device for asphalt workshops, in order to solve the problem mentioned in the background art that it does not have the function of recovering and reusing excess heat in asphalt workshops. During asphalt production, a large amount of heat is lost and cannot be collected for workshop heating, resulting in the workshop needing to consume a lot of extra energy to maintain the temperature in winter, which reduces the environmental performance.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a heat recovery device for an asphalt workshop, including an asphalt production pipeline, a heat tracing pipeline sleeved on the outside of the asphalt production pipeline, a sealing component installed on one side of the heat tracing pipeline, a one-way valve installed below the asphalt production pipeline, a connecting pipe connected to the lower end of the one-way valve, a high-temperature hot water tank installed at the lower end of the connecting pipe, and a recovery device installed on one side of the high-temperature hot water tank.

[0008] The recycling device includes a conveying pump, a heating box installed on one side of the conveying pump, a U-shaped pipe installed inside the heating box, a recycling box installed at one end of the U-shaped pipe, a conveying pipe connected to the upper end of the recycling box, a recycling pump installed on one side of the conveying pipe, a recycling pipe installed on one side of the recycling pump, and a nozzle installed at one end of the recycling pipe.

[0009] The sealing assembly includes a mounting block, a sealing gasket is installed on the side of the mounting block near the heat tracing pipe, a mounting ring is provided on the outer side of the mounting block, a bolt is provided on one side of the mounting ring, a fixing block is installed on the side of the mounting block away from the asphalt production pipe, a screw is provided at the upper end of the fixing block, and a nut is sleeved on one end of the screw.

[0010] Preferably, the upper end of the heat tracing pipe is provided with an inlet pipe, and the heat tracing pipe is connected to a high-temperature hot water tank through a one-way valve and a connecting pipe.

[0011] Preferably, the high-temperature hot water tank is connected to a U-shaped pipe via a delivery pump. The U-shaped pipe consists of multiple sets, which are interconnected and evenly laid in the heating tank.

[0012] Preferably, one end of the U-shaped tube is connected to the recycling bin, and the conveying tube passes through the recycling bin and extends into its inner cavity.

[0013] Preferably, the recycling bin is connected to the recycling pump via a delivery pipe, the recycling pump is connected to the heat tracing pipe via the recycling pipe, and the nozzle is disposed in the inner cavity of the heat tracing pipe.

[0014] Preferably, the mounting blocks are in multiple sets, and the multiple sets of mounting blocks are symmetrically arranged on the outside of the asphalt production pipeline, and the cross-section of the sealing gasket is an L-shaped structure.

[0015] Preferably, a screw hole is provided on one side of the heat tracing pipe, and there are multiple sets of fixing blocks, which are respectively fixed on both sides of the mounting block. The screw passes through the fixing block and extends to its outer side.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0017] First, this utility model utilizes a recycling device to recover and reuse excess heat from asphalt production pipelines for heating operations in other workshops, thereby improving environmental performance. The heat in the asphalt production pipelines exchanges heat with the medium in the heat tracing pipelines. By opening a one-way valve, the medium enters a high-temperature hot water tank through a connecting pipe. The delivery pump is then started, which transports the medium from the high-temperature hot water tank to a U-shaped pipe. The U-shaped pipe exchanges heat with the air in the workshop and then transports the medium to a recycling tank. By starting the recycling pump, the medium in the recycling tank is transported to the nozzles through the delivery pipe and the recycling pipe. The nozzles spray the medium to increase the contact area and improve the heat exchange efficiency.

[0018] Secondly, this utility model ensures the sealing of the joint between the heat tracing pipeline and the asphalt production pipeline by setting a sealing component, preventing leakage and ensuring the sealing and normal operation of the heat recovery system. By installing a sealing gasket with an L-shaped cross-section on one side of the mounting block, the symmetrically arranged fixing blocks are attached together. A screw passes through the symmetrically arranged fixing blocks, and a nut is tightened at one end of the screw, so that the symmetrically arranged mounting blocks are tightly attached. A bolt passes through the mounting ring and is screwed into the corresponding screw hole, so that the mounting block can be detachably installed on one side of the heat tracing pipeline, ensuring the sealing of the joint between the asphalt production pipeline and the heat tracing pipeline. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the present invention;

[0021] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0022] Figure 4 This is a schematic diagram of the structure of the recovery pipe and nozzle of this utility model.

[0023] In the diagram: 1. Asphalt production pipeline; 2. Heat tracing pipeline; 3. Feed pipe; 4. Check valve; 5. Connecting pipe; 6. High-temperature hot water tank; 7. Recovery device; 701. Conveying pump; 702. Heating box; 703. U-shaped pipe; 704. Recovery box; 705. Conveying pipe; 706. Recovery pump; 707. Recovery pipe; 708. Nozzle; 8. Sealing assembly; 801. Mounting block; 802. Sealing gasket; 803. Mounting ring; 804. Bolt; 805. Fixing block; 806. Screw; 807. Nut. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 A heat recovery device for an asphalt workshop includes an asphalt production pipeline 1, a heat tracing pipeline 2 sleeved on the outside of the asphalt production pipeline 1, a sealing component 8 installed on one side of the heat tracing pipeline 2, a one-way valve 4 installed below the asphalt production pipeline 1, a connecting pipe 5 connected to the lower end of the one-way valve 4, a high-temperature hot water tank 6 installed at the lower end of the connecting pipe 5, and a recovery device 7 installed on one side of the high-temperature hot water tank 6; the recovery device 7 includes a conveying pump 701, a heating box 702 installed on one side of the conveying pump 701, a U-shaped pipe 703 installed inside the heating box 702, and a recovery box 704 installed at one end of the U-shaped pipe 703; the upper part of the recovery box 704... The end is connected to a conveying pipe 705, a recovery pump 706 is provided on one side of the conveying pipe 705, a recovery pipe 707 is installed on one side of the recovery pump 706, and a nozzle 708 is installed at one end of the recovery pipe 707; the sealing assembly 8 includes a mounting block 801, a sealing gasket 802 is installed on the side of the mounting block 801 near the heat tracing pipe 2, a mounting ring 803 is provided on the outer side of the mounting block 801, a bolt 804 is provided on one side of the mounting ring 803, a fixing block 805 is installed on the side of the mounting block 801 away from the asphalt production pipe 1, a screw 806 is provided at the upper end of the fixing block 805, and a nut 807 is sleeved on one end of the screw 806.

[0026] Through the above technical solution, the excess heat in the asphalt production pipeline 1 is recovered and utilized by the set recovery device 7 to provide heating for other workshops, improving environmental protection performance. The heat in the asphalt production pipeline 1 exchanges heat with the medium in the heat tracing pipeline 2. By opening the one-way valve 4, the medium enters the high-temperature hot water tank 6 through the connecting pipe 5. The delivery pump 701 is started, and the delivery pump 701 delivers the medium in the high-temperature hot water tank 6 to the U-shaped pipe 703. The U-shaped pipe 703 exchanges heat with the air in the workshop and delivers the medium to the recovery box 704. By starting the recovery pump 706, the medium in the recovery box 704 is delivered to the nozzle 708 through the delivery pipe 705 and the recovery pipe 707. The nozzle 708 sprays the medium to increase contact. The area is increased to improve heat exchange efficiency. The sealing component 8 ensures the sealing of the joint between the heat tracing pipe 2 and the asphalt production pipe 1, preventing leakage and ensuring the sealing and normal operation of the heat recovery system. By installing a sealing gasket 802 with an L-shaped cross-section on one side of the mounting block 801, the symmetrically arranged fixing blocks 805 are fitted together. The screw 806 passes through the symmetrically arranged fixing blocks 805, and the nut 807 is tightened at one end of the screw 806, so that the symmetrically arranged mounting blocks 801 fit tightly. The bolt 804 passes through the mounting ring 803 and is screwed into the corresponding screw hole, so that the mounting block 801 can be detachably installed on one side of the heat tracing pipe 2, ensuring the sealing of the joint between the asphalt production pipe 1 and the heat tracing pipe 2.

[0027] Specifically, the upper end of the heat tracing pipe 2 is provided with an inlet pipe 3, and the heat tracing pipe 2 is connected to the high-temperature hot water tank 6 through a one-way valve 4 and a connecting pipe 5.

[0028] Through the above technical solution, the feed pipe 3 at the upper end of the heat tracing pipe 2 is used to input the heat medium, and the one-way valve 4, together with the connecting pipe 5, ensures that the heat medium flows unidirectionally from the heat tracing pipe 2 into the high-temperature hot water tank 6, so as to realize heat transfer and storage.

[0029] Specifically, the high-temperature hot water tank 6 is connected to the U-shaped pipe 703 via the delivery pump 701. There are multiple sets of U-shaped pipes 703, which are interconnected and evenly laid in the heating box 702.

[0030] Through the above technical solution, the high-temperature hot water tank 6 uses a delivery pump 701 to deliver hot water to multiple sets of U-shaped pipes 703 that are interconnected and evenly laid in the heating box 702, so as to achieve efficient heating of the space around the heating box 702.

[0031] Specifically, one end of the U-shaped tube 703 is connected to the recycling bin 704, and the conveying tube 705 passes through the recycling bin 704 and extends into its inner cavity.

[0032] Through the above technical solution, the U-shaped pipe 703 introduces the low-temperature water after heating into the recycling tank 704, while the conveying pipe 705 that runs through the recycling tank 704 is responsible for draining the water from the tank for subsequent recycling or further treatment.

[0033] Specifically, the recycling box 704 is connected to the recycling pump 706 via the delivery pipe 705, the recycling pump 706 is connected to the heat tracing pipe 2 via the recycling pipe 707, and the nozzle 708 is installed in the inner cavity of the heat tracing pipe 2.

[0034] Through the above technical solution, the medium in the recovery box 704 is pressurized by the recovery pump 706 through the conveying pipe 705 and reinjected into the heat tracing pipe 2 through the recovery pipe 707. The nozzle 708 in the heat tracing pipe 2 can atomize water and spray it out to assist the heat exchange process and enhance the heat transfer effect.

[0035] Specifically, there are multiple sets of mounting blocks 801, which are symmetrically arranged on the outside of the asphalt production pipeline 1, and the cross-section of the sealing gasket 802 is an L-shaped structure.

[0036] Through the above technical solution, multiple sets of installation blocks 801 are symmetrically arranged on the outside of the asphalt production pipeline 1 to provide an installation base for the sealing structure. Together with the sealing gasket 802 with an L-shaped cross-section, it can fit tightly to the pipeline connection parts in all directions, effectively enhancing the sealing performance of the asphalt production pipeline 1 connection and preventing media leakage.

[0037] Specifically, a screw hole is provided on one side of the heat tracing pipe 2, and there are multiple sets of fixing blocks 805. The multiple sets of fixing blocks 805 are fixed on both sides of the mounting block 801, and the screw 806 passes through the fixing block 805 and extends to its outer side.

[0038] Through the above technical solution, the screw hole opened on one side of the heat tracing pipe 2 is used in conjunction with the bolt 804 to detachably install the mounting block 801 on one side of the heat tracing pipe 2. The mounting block 801 is firmly installed on the heat tracing pipe 2 by the screw 806 and the fixing block 805, ensuring the stability of the connection structure.

[0039] In operation, when excess heat in the asphalt production pipeline 1 needs to be recovered, the heat in the asphalt production pipeline 1 exchanges heat with the medium in the heat tracing pipeline 2. By opening the one-way valve 4, the medium enters the high-temperature hot water tank 6 through the connecting pipe 5. The delivery pump 701 is started, and the delivery pump 701 delivers the medium in the high-temperature hot water tank 6 to the U-shaped pipe 703. The U-shaped pipe 703 exchanges heat with the air in the workshop and delivers the medium to the recovery tank 704. By starting the recovery pump 706, the medium in the recovery tank 704 is delivered to the nozzle 708 through the delivery pipe 705 and the recovery pipe 707. The spraying of the medium at the nozzle 708 increases. To increase the contact area and improve heat exchange efficiency, when it is necessary to ensure the sealing of the joint between the heat tracing pipeline 2 and the asphalt production pipeline 1, a sealing gasket 802 with an L-shaped cross-section is installed on one side of the mounting block 801. The symmetrically arranged fixing blocks 805 are then fitted together. A screw 806 is used to pass through the symmetrically arranged fixing blocks 805, and a nut 807 is tightened at one end of the screw 806 to make the symmetrically arranged mounting blocks 801 fit tightly. A bolt 804 is used to pass through the mounting ring 803 and screwed into the corresponding screw hole. The mounting block 801 is then detachably installed on one side of the heat tracing pipeline 2 to ensure the sealing of the joint between the asphalt production pipeline 1 and the heat tracing pipeline 2.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat recovery device for an asphalt workshop, comprising an asphalt production pipeline (1), characterized in that: A heat tracing pipe (2) is sleeved on the outside of the asphalt production pipeline (1). A sealing component (8) is installed on one side of the heat tracing pipe (2). A one-way valve (4) is installed below the asphalt production pipeline (1). A connecting pipe (5) is connected to the lower end of the one-way valve (4). A high-temperature hot water tank (6) is installed at the lower end of the connecting pipe (5). A recovery device (7) is installed on one side of the high-temperature hot water tank (6). The recycling device (7) includes a delivery pump (701), a heating box (702) is installed on one side of the delivery pump (701), a U-shaped pipe (703) is provided inside the heating box (702), a recycling box (704) is provided at one end of the U-shaped pipe (703), a delivery pipe (705) is connected to the upper end of the recycling box (704), a recycling pump (706) is provided on one side of the delivery pipe (705), a recycling pipe (707) is installed on one side of the recycling pump (706), and a nozzle (708) is installed at one end of the recycling pipe (707). The sealing assembly (8) includes a mounting block (801), a sealing gasket (802) is installed on the side of the mounting block (801) near the heat tracing pipe (2), a mounting ring (803) is provided on the outer side of the mounting block (801), a bolt (804) is provided on one side of the mounting ring (803), a fixing block (805) is installed on the side of the mounting block (801) away from the asphalt production pipe (1), a screw (806) is provided at the upper end of the fixing block (805), and a nut (807) is fitted at one end of the screw (806).

2. The heat recovery device for an asphalt workshop according to claim 1, characterized in that: The upper end of the heat tracing pipe (2) is provided with a feed pipe (3), and the heat tracing pipe (2) is connected to the high temperature hot water tank (6) through a one-way valve (4) and a connecting pipe (5).

3. The heat recovery device for an asphalt workshop according to claim 1, characterized in that: The high-temperature hot water tank (6) is connected to the U-shaped pipe (703) via the delivery pump (701). The U-shaped pipe (703) consists of multiple sets, which are interconnected and evenly laid in the heating box (702).

4. The heat recovery device for an asphalt workshop according to claim 1, characterized in that: One end of the U-shaped tube (703) is connected to the recycling box (704), and the conveying tube (705) passes through the recycling box (704) and extends into its inner cavity.

5. The heat recovery device for an asphalt workshop according to claim 1, characterized in that: The recycling tank (704) is connected to the recycling pump (706) via the delivery pipe (705), the recycling pump (706) is connected to the heat tracing pipe (2) via the recycling pipe (707), and the nozzle (708) is installed in the inner cavity of the heat tracing pipe (2).

6. The heat recovery device for an asphalt workshop according to claim 1, characterized in that: The mounting block (801) is in multiple sets, and the multiple sets of mounting blocks (801) are symmetrically arranged on the outside of the asphalt production pipeline (1). The sealing gasket (802) has an L-shaped cross-section.

7. The heat recovery device for an asphalt workshop according to claim 1, characterized in that: The heat tracing pipe (2) has a screw hole on one side. There are multiple sets of fixing blocks (805). The multiple sets of fixing blocks (805) are fixed on both sides of the mounting block (801). The screw (806) passes through the fixing block (805) and extends to its outer side.

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