Saturated water heat recovery system for heating container bottom plate

Abstract

The utility model provides a saturated water heat recovery system for heating a container bottom plate. The saturated water heat recovery system comprises a hot press, a heat energy recovery tank and a cooling water pool, an inlet of the hot press is connected with an inlet pipe and a steam inlet pipe, and an outlet of the hot press is connected with an outlet pipe and a steam outlet pipe. An inlet of the heat energy recovery tank is connected with an outlet of the hot press through a first circulating water pipe; an outlet of the heat energy recovery tank is connected with an inlet of the hot press through a second circulating water pipe; an inlet of the cooling water tank is connected with an outlet of the hot press through a first cooling water pipe, and an outlet of the cooling water tank is connected with an inlet of the hot press through a second cooling water pipe. According to the utility model, saturated water can be utilized for multiple times, heat energy can be fully utilized, and energy conservation and environmental protection are realized; and a steam inlet pipe and a steam outlet pipe are reserved, and steam can be adopted for heating.

Description

Technical Field

[0001] This utility model relates to the field of heat recovery system technology, and in particular to a saturated water heat recovery system for heating the bottom plate of a container. Background Technology

[0002] Most existing container composite floor panels are made of bamboo and wood composite panels, and their production is basically carried out using a hot pressing process. Hot pressing machines are typically used for hot pressing of container composite floor panels. However, existing hot presses use hot water or steam, which passes through the hot platen of the press before exiting. This method has low thermal efficiency and high energy consumption. Utility Model Content

[0003] This invention proposes a saturated water heat recovery system for heating the bottom plate of a container, which solves the problems of low thermal energy utilization and high energy consumption of existing hot presses.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A saturated water heat recovery system for heating the bottom plate of a container includes a hot press, a heat recovery tank, and a cooling water pool. The hot press has an inlet pipe and a steam inlet pipe connected to its inlet, and an outlet pipe and a steam outlet pipe connected to its outlet. The heat recovery tank's inlet is connected to the hot press's outlet via a first circulating water pipe, which is equipped with a first control valve. The heat recovery tank's outlet is connected to the hot press's inlet via a second circulating water pipe, which is equipped with a first filter, a first water pump, a second control valve, and a first check valve. The cooling water pool's inlet is connected to the hot press's outlet via a first cooling water pipe, which is equipped with a third control valve. The cooling water pool's outlet is connected to the hot press's inlet via a second cooling water pipe, which is equipped with a second filter, a second water pump, a fourth control valve, and a second check valve. The inlet pipe is equipped with a fifth control valve and a third check valve. The steam inlet pipe is equipped with a sixth control valve, the outlet pipe with a seventh control valve, and the steam outlet pipe with an eighth control valve.

[0006] Preferably, the first control valve includes a first shut-off valve and a first disc valve connected in series; the second control valve includes a second shut-off valve and a second disc valve connected in series; the third control valve includes a third shut-off valve, a third disc valve and a third main shut-off valve, wherein the third shut-off valve and the third disc valve are first connected in parallel and then connected in series with the third main shut-off valve; and the fourth control valve includes a fourth shut-off valve and a fourth disc valve connected in series.

[0007] Preferably, the fifth control valve includes a fifth shut-off valve and a fifth disc valve connected in series; the sixth control valve includes a sixth shut-off valve; the seventh control valve includes a seventh shut-off valve and a seventh disc valve connected in series; and the eighth control valve includes an eighth shut-off valve and an eighth disc valve connected in series.

[0008] Preferably, a first temperature sensor is connected to both the inlet and outlet of the hot press.

[0009] Preferably, a plurality of second temperature sensors are installed on the hot platen of the hot press.

[0010] Preferably, a third temperature sensor is provided inside the heat recovery tank and / or at the outlet of the heat recovery tank.

[0011] Preferably, a liquid level sensor is installed on the heat recovery tank.

[0012] Preferably, a third water pump and a third filter are also connected to the inlet pipe.

[0013] Preferably, both the first water pump and the third water pump are high-temperature hot water pumps, and both the first filter and the third filter are high-temperature filters.

[0014] The beneficial effects of this utility model are as follows: During operation, preheating is performed first. Hot water from the heat recovery tank enters the hot platen of the hot press through the second circulating water pipe for preheating, raising the temperature of the hot platen by 30-40 degrees Celsius from its base temperature. Then, the first cooling water pipe is opened, guiding the water from the hot press into the cooling water pool (if the temperature is still too high, it can also return to the heat recovery tank through the first circulating water pipe for reuse). Next, heating is performed. Hot saturated water enters the hot platen of the hot press through the inlet pipe for heating. After reaching the desired temperature, it is kept at that temperature. The saturated water from the hot press is then guided back into the hot platen through the first circulating water pipe. The water is preheated and then reused in the heat recovery tank. Finally, after the container composite floor in the hot press is heated, the second cooling water pipe is opened, and water from the cooling water tank enters the hot plate of the hot press through the second cooling water pipe for cooling. The water from the hot press returns to the cooling water tank through the first cooling water pipe (if the temperature is detected to be too high, it can also be sent to the heat recovery tank for reuse through the first circulating water pipe). After cooling, a new container composite floor is heated for the next cycle. This invention allows for multiple uses of saturated water, fully utilizing heat energy and saving energy and protecting the environment. Furthermore, this invention retains steam inlet and steam outlet pipes, allowing for steam heating. When using steam for heating, steam enters the hot plate of the hot press through the steam inlet pipe and exits through the steam outlet pipe, with the condensate being directed to the cooling water tank. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] 1. Hot press; 2. Heat recovery tank; 3. Cooling water pool; 4. First temperature sensor; 5. Second temperature sensor; 6. Hot plate.

[0018] Inlet pipe 11, steam inlet pipe 12, outlet pipe 13, steam outlet pipe 14, third check valve 16, first circulating water pipe 21, second circulating water pipe 23, first filter 24, first water pump 25, first check valve 27, first cooling water pipe 31, second cooling water pipe 33, second filter 34, second water pump 35, second check valve 37.

[0019] Fifth shut-off valve 151, fifth butterfly valve 152, seventh shut-off valve 181, seventh butterfly valve 182, eighth shut-off valve 191, eighth butterfly valve 192, first shut-off valve 221, first butterfly valve 222; second shut-off valve 261, second butterfly valve 262, third shut-off valve 321, third butterfly valve 322, third main shut-off valve 323, fourth shut-off valve 361, fourth butterfly valve 362. Detailed Implementation

[0020] 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.

[0021] Reference Figure 1A saturated water heat recovery system for heating the bottom plate of a container includes a hot press 1, a heat recovery tank 2, and a cooling water pool 3. The hot press 1 has an inlet pipe 11 and a steam inlet pipe 12 connected to its inlet, and an outlet pipe 13 and a steam outlet pipe 14 connected to its outlet. The inlet of the heat recovery tank 2 is connected to the outlet of the hot press 1 via a first circulating water pipe 21, which is equipped with a first control valve. The outlet of the heat recovery tank 2 is connected to the inlet of the hot press 1 via a second circulating water pipe 23, which is equipped with a first filter 24, a first water pump 25, a second control valve, and a third cooling water tank 3. A check valve 27 is provided; the inlet of the cooling water tank 3 is connected to the outlet of the hot press 1 through the first cooling water pipe 31, and a third control valve is connected to the first cooling water pipe 31; the outlet of the cooling water tank 3 is connected to the inlet of the hot press 1 through the second cooling water pipe 33, and a second filter 34, a second water pump 35, a fourth control valve, and a second check valve 37 are connected to the second cooling water pipe 33; a fifth control valve and a third check valve 16 are connected to the inlet pipe 11; a sixth control valve is connected to the steam inlet pipe 12; a seventh control valve is connected to the outlet pipe 13; and an eighth control valve is connected to the steam outlet pipe 14.

[0022] As a preferred technical solution, the first control valve includes a first shut-off valve 221 and a first disc valve 222 connected in series; the second control valve includes a second shut-off valve 261 and a second disc valve 262 connected in series; the third control valve includes a third shut-off valve 321, a third disc valve 322, and a third main shut-off valve 323, wherein the third shut-off valve 321 and the third disc valve 322 are first connected in parallel and then connected in series with the third main shut-off valve 323; the fourth control valve includes a fourth shut-off valve 361 and a fourth disc valve 362 connected in series; the fifth control valve includes a fifth shut-off valve 151 and a fifth disc valve 152 connected in series; the sixth control valve includes a sixth shut-off valve 17; the seventh control valve includes a seventh shut-off valve 181 and a seventh disc valve 182 connected in series; and the eighth control valve includes an eighth shut-off valve 191 and an eighth disc valve 192 connected in series.

[0023] As a preferred technical solution, a first temperature sensor 4 is connected to both the inlet and outlet of the hot press 1, and several second temperature sensors 5 are installed on the hot platen 6 of the hot press 1. A third temperature sensor 28 is provided inside the heat recovery tank 2 and / or at the outlet of the heat recovery tank, and a liquid level sensor 29 is installed on the heat recovery tank 2. The liquid level sensor 29 can be a magnetic float liquid level sensor.

[0024] As a preferred technical solution, a third water pump (not shown) and a third filter (not shown) are also connected to the inlet pipe 11. Both the first water pump and the third water pump are high-temperature hot water pumps, and both the first filter and the third filter are high-temperature filters.

[0025] In operation, this invention first preheats the hot water in the heat recovery tank 2 through the second circulating water pipe 23 into the hot platen 6 of the hot press 1 for preheating, raising the temperature of the hot platen 6 by 30-40 degrees Celsius from its base temperature. Then, the first cooling water pipe 31 is opened, guiding the water from the hot press 1 into the cooling water pool 3 (if the temperature is still too high, it can also return to the heat recovery tank 2 through the first circulating water pipe 21 for reuse). Next, hot saturated water enters the hot platen 6 of the hot press 1 through the inlet pipe for heating. Once the desired temperature is reached, it is kept at that temperature. The saturated water from the hot press 1 is then guided through the first circulating water pipe 21 into the heat recovery tank 2 for reuse during preheating. Finally, after the container composite floor in the hot press 1 is heated, the second cooling water pipe 33 is opened. Water from the cooling water tank enters the hot platen 6 of the hot press 1 through the second cooling water pipe 33 for cooling. Water from the hot press 1 returns to the cooling water tank 3 through the first cooling water pipe 31 (if the temperature is too high, it can also be sent to the heat recovery tank 2 for reuse through the first circulating water pipe 21). After cooling, a new container composite floor is heated for the next cycle. The saturated water in this invention can be reused multiple times, making full use of heat energy and saving energy and protecting the environment. Furthermore, this invention also retains the steam inlet pipe 12 and the steam outlet pipe 14, allowing for steam heating. When using steam for heating, steam enters the hot platen 6 of the hot press 1 through the steam inlet pipe 12 and exits through the steam outlet pipe 14. The condensate can be directed into the cooling water tank 3.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A saturated water heat recovery system for heating the bottom plate of a container, characterized in that: This includes hot presses, heat recovery tanks, and cooling water pools; The hot press has an inlet pipe and a steam inlet pipe at the inlet, and an outlet pipe and a steam outlet pipe at the outlet. The inlet of the heat recovery tank is connected to the outlet of the hot press through a first circulating water pipe. A first control valve is connected to the first circulating water pipe. The outlet of the heat recovery tank is connected to the inlet of the hot press through a second circulating water pipe. A first filter, a first water pump, a second control valve, and a first check valve are connected to the second circulating water pipe. The inlet of the cooling water tank is connected to the outlet of the hot press through the first cooling water pipe. A third control valve is connected to the first cooling water pipe. The outlet of the cooling water tank is connected to the inlet of the hot press through the second cooling water pipe. A second filter, a second water pump, a fourth control valve, and a second check valve are connected to the second cooling water pipe. The inlet pipe is connected to a fifth control valve and a third check valve, the steam inlet pipe is connected to a sixth control valve, the outlet pipe is connected to a seventh control valve, and the steam outlet pipe is connected to an eighth control valve.

2. The saturated water heat recovery system for heating the bottom plate of a container as described in claim 1, characterized in that: The first control valve includes a first shut-off valve and a first disc valve connected in series; the second control valve includes a second shut-off valve and a second disc valve connected in series; the third control valve includes a third shut-off valve, a third disc valve, and a third main shut-off valve, wherein the third shut-off valve and the third disc valve are first connected in parallel and then connected in series with the third main shut-off valve; the fourth control valve includes a fourth shut-off valve and a fourth disc valve connected in series; the fifth control valve includes a fifth shut-off valve and a fifth disc valve connected in series; the sixth control valve includes a sixth shut-off valve; the seventh control valve includes a seventh shut-off valve and a seventh disc valve connected in series; and the eighth control valve includes an eighth shut-off valve and an eighth disc valve connected in series.

3. The saturated water heat recovery system for heating the bottom plate of a container as described in claim 1, characterized in that: The hot press is equipped with a first temperature sensor at both its inlet and outlet.

4. The saturated water heat recovery system for heating the bottom plate of a container as described in claim 1, characterized in that: Several second temperature sensors are installed on the hot platen of the hot press.

5. The saturated water heat recovery system for heating the bottom plate of a container as described in claim 1, characterized in that: A third temperature sensor is installed inside the heat recovery tank and / or at the outlet of the heat recovery tank.

6. The saturated water heat recovery system for heating the bottom plate of a container as described in claim 1, characterized in that: A liquid level sensor is installed on the heat recovery tank.

7. The saturated water heat recovery system for heating the bottom plate of a container as described in any one of claims 1-6, characterized in that: A third water pump and a third filter are also connected to the inlet pipe.

8. The saturated water heat recovery system for heating the bottom plate of a container as described in claim 7, characterized in that: Both the first water pump and the third water pump are high-temperature hot water pumps, and both the first filter and the third filter are high-temperature filters.

Images