Heat exchange device for refrigeration dryer

Abstract

The utility model provides a heat exchange device for a refrigeration dryer, which comprises a heat exchange box, a filter part, a partition plate and a heat exchange tube, and the partition plate is vertically arranged in the heat exchange box and divides the inner cavity of the heat exchange box into a left chamber and a right chamber; an air inlet pipe used for being connected with an exhaust pipe of the refrigeration dryer is arranged on the left side of a top plate of the heat exchange box, and the air inlet pipe communicates with the left cavity. The filter part is horizontally arranged in the upper part of the left chamber and is opposite to the gas inlet pipe; a filter screen for filtering gas is arranged in the filter part; the right side of the top plate of the heat exchange box is provided with a water injection port communicated with the right cavity, the heat exchange pipe is arranged in the right cavity, one end of the heat exchange pipe penetrates through the partition plate and is located in the lower portion of the left cavity, and the other end of the heat exchange pipe extends out of a right side plate of the heat exchange box; a water outlet pipe communicated with the right cavity is arranged on the lower portion of the right side plate of the heat exchange box, and a water outlet valve is arranged on the water outlet pipe. According to the refrigeration dryer, gas exhausted by the refrigeration dryer can be clean, and waste of heat in the gas is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of mechanical equipment used in cigarette factories, and specifically relates to a heat exchange device for a refrigerated dryer. Background Technology

[0002] Refrigerated air dryers are commonly used in cigarette factories. A refrigerated air dryer is a type of air handling component in a pneumatic system. It works by using a refrigerant to exchange heat with compressed air, thereby reducing the temperature of the compressed air.

[0003] Existing refrigerated air dryers retain a large amount of excess hot air after use. This hot air contains heat, most of which is directly dissipated into the air, resulting in heat waste. Furthermore, the emitted hot air contains impurities, which, when directly released, affect air quality. Therefore, designing a heat exchange device for refrigerated air dryers to ensure cleaner exhaust gas and avoid heat waste has become a pressing technical problem for those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a heat exchange device for a refrigerated dryer to solve the aforementioned technical problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A heat exchange device for a refrigerated dryer includes a heat exchange chamber, a filter element, a partition, and heat exchange tubes. The partition is vertically arranged inside the heat exchange chamber and divides the inner cavity of the heat exchange chamber into a left chamber and a right chamber. An air inlet pipe for connecting to the exhaust pipe of the refrigerated dryer is arranged on the left side of the top plate of the heat exchange chamber, and the air inlet pipe is connected to the left chamber. The filter element is horizontally arranged in the upper part of the left chamber and opposite to the air inlet pipe, and the filter element has a filter screen for filtering the gas. A water inlet communicating with the right chamber is arranged on the right side of the top plate of the heat exchange chamber. The heat exchange tubes are arranged in the right chamber, one end of the heat exchange tubes passing through the partition and located in the lower part of the left chamber, and the other end of the heat exchange tubes extending to the outside of the right side plate of the heat exchange chamber. A water outlet pipe communicating with the right chamber is arranged in the lower part of the right side plate of the heat exchange chamber, and a water outlet valve is arranged on the water outlet pipe.

[0007] Preferably, the filter element includes a mounting bracket, a baffle, and a locking block. The locking block is located on the right side of the mounting bracket, and the baffle has a locking groove for engaging with the locking block. The upper part of the left side plate of the heat exchange box has a through hole for the mounting bracket to pass through. The baffle is located on the left side of the mounting bracket. The filter screen is located inside the mounting bracket. Ventilation holes opposite to the air inlet pipe are provided on both the upper and lower sides of the mounting bracket.

[0008] Preferably, a sealing ring is provided between the mounting bracket and the through hole; and a filter screen is provided in each of the two vent holes.

[0009] Preferably, a positioning block is provided on the lower part of the right side of the baffle, and a positioning groove for cooperating with the positioning block is provided on the lower part of the left side plate of the heat exchange box.

[0010] Preferably, a first receiving cavity and a second receiving cavity are arranged sequentially from top to bottom in the lower part of the left side plate of the heat exchange box. A rotating shaft is horizontally rotatably arranged in the second receiving cavity. A rotating roller is fixedly sleeved on the rotating shaft. A connecting rope is arranged on the rotating roller. The left end of the rotating shaft extends to the outside of the left side plate of the heat exchange box. An inverted T-shaped limiting block is slidably arranged in the first receiving cavity. A spring is arranged between the horizontal block of the inverted T-shaped limiting block and the bottom of the first receiving cavity. A limiting hole is vertically arranged on the positioning block for the vertical block of the inverted T-shaped limiting block to pass through. A first through hole for the vertical block to pass through is provided between the positioning groove and the first receiving cavity. A second through hole for the connecting rope to pass through is provided between the first receiving cavity and the second receiving cavity. The upper end of the connecting rope is connected to the horizontal block.

[0011] Preferably, a rotating block is provided at the left end of the rotating shaft; a handle is provided on the left side of the baffle.

[0012] Preferably, the air intake pipe is connected to the exhaust pipe via a connecting pipe, and an air intake valve is provided on the connecting pipe.

[0013] Preferably, a temperature sensor is provided in the right chamber, the air intake valve is a solenoid valve, and the temperature sensor and the air intake valve are electrically connected to the controller.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention relates to a heat exchange device for a refrigerated air dryer. During operation, as the exhaust gas passes through the filter screen in the left chamber, impurities are filtered out, resulting in cleaner gas. As the gas flows through the heat exchange tubes, it exchanges heat with the water in the right chamber, lowering the gas temperature and raising the water temperature, thus effectively preventing heat waste. Therefore, this invention ensures cleaner exhaust gas from the refrigerated air dryer, preventing air pollution, and effectively avoids heat waste in the exhaust gas. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly described below, and the specific embodiments of this utility model will be further described in detail with reference to the drawings.

[0017] Figure 1 This is a schematic diagram of the internal structure of a heat exchange device for a refrigerated dryer provided in an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of a heat exchange device for a refrigerated dryer provided in an embodiment of this utility model;

[0019] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 4 for Figure 1 Enlarged view of point B in the middle.

[0021] Marked in the attached diagram:

[0022] 1. Heat exchanger box; 3. Water outlet pipe; 4. Temperature sensor; 5. Heat exchanger tube;

[0023] 6. Water inlet; 7. Partition; 8. Air inlet pipe; 9. Connecting air pipe; 10. Baffle;

[0024] 11. Sealing ring; 12. Mounting bracket; 13. Positioning groove; 14. Positioning block;

[0025] 15. First receiving cavity; 16. Connecting rope; 17. Spring; 18. Rotating roller; 19. Rotating shaft;

[0026] 20. Second receiving cavity; 21. Limiting hole; 22. Vertical block; 23. Vent hole;

[0027] 24. Filter screen; 25. Filter screen; 26. Clip; 27. Slot; 28. Horizontal block;

[0028] 29. First through hole; 30. Second through hole; 31. Handle; 32. Rotating block. Detailed Implementation

[0029] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0030] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0031] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0032] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0033] like Figures 1 to 4 As shown, this embodiment of the present invention provides a heat exchange device for a refrigerated dryer, comprising a heat exchange box 1, a filter element, a partition 7, and a heat exchange tube 5. The partition 7 is vertically arranged inside the heat exchange box 1 and divides the inner cavity of the heat exchange box into a left chamber and a right chamber. An air inlet pipe 8 is provided on the left side of the top plate of the heat exchange box for connecting to the exhaust pipe of the refrigerated dryer, and the air inlet pipe is connected to the left chamber. The filter element is horizontally arranged in the upper part of the left chamber and opposite to the air inlet pipe. The filter element includes a filter screen 25 for filtering gas; a water inlet 6 connected to the right chamber is provided on the right side of the top plate of the heat exchange box; the heat exchange tube 5 is disposed in the right chamber, one end of the heat exchange tube 5 passes through the partition and is located in the lower part of the left chamber, and the other end of the heat exchange tube 5 extends to the outside of the right side plate of the heat exchange box; a water outlet pipe 3 connected to the right chamber is provided at the lower part of the right side plate of the heat exchange box 1, and a water outlet valve is provided on the water outlet pipe.

[0034] The heat exchange device for a refrigerated dryer provided in this embodiment of the invention, during use, filters impurities from the gas discharged from the dryer through the filter screen 25 in the left chamber, making the gas cleaner. As the gas flows through the heat exchange tube 5, it exchanges heat with the water in the right chamber, lowering the gas temperature and raising the water temperature in the right chamber, thus effectively preventing heat waste. Therefore, this invention ensures cleaner gas discharged from the refrigerated dryer, preventing air pollution, and effectively avoids heat waste in the discharged gas.

[0035] Further, the filter element includes a mounting bracket 12, a baffle 10, and a locking block 26. The locking block is located on the right side of the mounting bracket, and the baffle has a slot 27 for engaging with the locking block. The upper part of the left side plate of the heat exchange chamber has a through hole for the mounting bracket to pass through. The baffle 10 is located on the left side of the mounting bracket, and the filter screen is located inside the mounting bracket. Ventilation holes 23, opposite to the air inlet pipe, are provided on both the upper and lower sides of the mounting bracket. With this design, the gas discharged from the refrigerated dryer enters the upper part of the left chamber through the air inlet pipe, flows through the ventilation holes on the upper side of the mounting bracket, the filter screen, and the ventilation holes on the lower side of the mounting bracket, and then enters the lower part of the left chamber, subsequently entering the heat exchange tube.

[0036] Specifically, a sealing ring 11 is provided between the mounting bracket and the through hole; a filter screen 24 is provided in each of the two vent holes 23, so that the sealing ring can make the sealing between the mounting bracket and the through hole better, and the filter screens in the two vent holes can filter the gas again, making the gas cleaner.

[0037] Preferably, a positioning block 14 is provided on the lower part of the right side of the baffle, and a positioning groove 13 is provided on the lower part of the left side plate of the heat exchange box for cooperating with the positioning block. This allows for better positioning of the filter element during installation by utilizing the cooperation between the positioning block and the positioning groove. When installing the filter element, the mounting bracket is inserted into the left chamber through the through hole, causing the locking block to cooperate with the locking groove, and simultaneously the positioning block to cooperate with the positioning groove. The baffle then contacts the left side plate of the heat exchange box, thereby achieving the installation of the filter element.

[0038] Furthermore, the lower part of the left side plate of the heat exchange box is provided with a first receiving cavity 15 and a second receiving cavity 20 from top to bottom. A rotating shaft 19 is horizontally rotatably arranged in the second receiving cavity. A rotating roller 18 is fixedly sleeved on the rotating shaft. A connecting rope 16 is arranged on the rotating roller. The left end of the rotating shaft extends to the outside of the left side plate of the heat exchange box. An inverted T-shaped limiting block is slidably arranged in the first receiving cavity. A spring 17 is arranged between the horizontal block 28 of the inverted T-shaped limiting block and the bottom of the first receiving cavity. A limiting hole 21 is vertically arranged on the positioning block for the vertical block 22 of the inverted T-shaped limiting block to pass through. A first through hole 29 for the vertical block to pass through is provided between the positioning groove and the first receiving cavity. A second through hole 30 for the connecting rope to pass through is provided between the first receiving cavity and the second receiving cavity. The upper end of the connecting rope passes through the second through hole and the middle position of the spring and then connects to the horizontal block. In this scheme, before installing the filter element, rotating the shaft 19 causes the rotating roller to rotate, thereby pulling the inverted T-shaped limiting block vertically downward using the connecting rope until the upper end of the vertical block is lowered into the first through hole. This facilitates the insertion of the positioning block into the positioning groove during installation, avoiding interference. When the limiting hole on the positioning block is aligned with the vertical block, the shaft is released, and under the restoring force of the spring, the inverted T-shaped limiting block moves vertically upward, allowing the vertical block 22 to enter the limiting hole 21. This effectively limits the positioning block 14, preventing it from coming out of the positioning groove, and thus ensuring a more secure and reliable connection between the filter element and the heat exchanger.

[0039] Preferably, a rotating block 32 is provided at the left end of the rotating shaft; a handle 31 is provided on the left side of the baffle, so that the rotating shaft can be easily rotated by the rotating block and the filter element can be easily moved by the handle.

[0040] Furthermore, the intake pipe 8 is connected to the exhaust pipe via a connecting pipe 9, and an intake valve is provided on the connecting pipe, so that the connecting pipe can be easily opened and closed via the intake valve.

[0041] Preferably, the heat exchange tube 5 is arranged in a spiral shape in the right chamber of the heat exchange box 1, and the other end of the heat exchange tube, that is, the end away from the partition, extends to the upper part of the right side plate of the heat exchange box; the filter screen and the filter screen are both activated carbon filter screens.

[0042] Specifically, a temperature sensor 4 is installed in the right chamber, and the air inlet valve is a solenoid valve. Both the temperature sensor 4 and the air inlet valve are electrically connected to the controller. Using this design, the temperature sensor can monitor the water temperature in the right chamber in real time. When the temperature sensor detects that the water temperature in the right chamber has reached a set value, the controller activates the air inlet valve to close the connecting air pipe. After the heated water in the right chamber is drained and then refilled, the controller activates the air inlet valve again to open the connecting air pipe, and heat exchange continues. It can be understood that the water added to the right chamber can be room temperature water or cold water, with a temperature lower than the temperature of the gas discharged from the refrigerated dryer; the hot water discharged from the outlet pipe can be provided to equipment or hot water tanks for use.

[0043] In other embodiments, a water inlet can be connected to a water inlet pipe, and a water inlet valve can be installed on the water inlet pipe. Both the water inlet valve and the water outlet valve can be solenoid valves and are electrically connected to the controller. This allows the controller to automatically control the water inlet and outlet operations of the right chamber based on the water temperature in the right chamber, thus saving manpower. A discharge valve can be installed at the end of the heat exchange tube away from the partition. This discharge valve can be a solenoid valve electrically connected to the controller, allowing the controller to automatically control the opening and closing of the discharge valve based on the water temperature in the right chamber.

[0044] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A heat exchange device for a refrigerated dryer, characterized in that, It includes a heat exchange box, a filter element, a partition, and heat exchange tubes. The partition is vertically arranged inside the heat exchange box and divides the inner cavity of the heat exchange box into a left chamber and a right chamber. An air inlet pipe for connecting to the exhaust pipe of a refrigerated dryer is arranged on the left side of the top plate of the heat exchange box, and the air inlet pipe is connected to the left chamber. The filter element is horizontally arranged in the upper part of the left chamber and opposite to the air inlet pipe. The filter element has a filter screen for filtering the gas. A water inlet connected to the right chamber is arranged on the right side of the top plate of the heat exchange box. The heat exchange tube is arranged in the right chamber. One end of the heat exchange tube passes through the partition and is located in the lower part of the left chamber. The other end of the heat exchange tube extends to the outside of the right side plate of the heat exchange box. A water outlet pipe connected to the right chamber is arranged in the lower part of the right side plate of the heat exchange box. A water outlet valve is arranged on the water outlet pipe.

2. The heat exchange device for a refrigerated dryer according to claim 1, characterized in that, The filter element includes a mounting bracket, a baffle, and a locking block. The locking block is located on the right side of the mounting bracket, and the baffle has a locking groove for engaging with the locking block. The upper part of the left side plate of the heat exchange box has a through hole for the mounting bracket to pass through. The baffle is located on the left side of the mounting bracket, and the filter screen is located inside the mounting bracket. Both the upper and lower sides of the mounting bracket have vent holes opposite to the air inlet pipe.

3. The heat exchange device for a refrigerated dryer according to claim 2, characterized in that, A sealing ring is provided between the mounting bracket and the through hole; a filter screen is provided in each of the two vent holes.

4. The heat exchange device for a refrigerated dryer according to claim 2, characterized in that, A positioning block is provided on the lower part of the right side of the baffle, and a positioning groove for cooperating with the positioning block is provided on the lower part of the left side plate of the heat exchange box.

5. The heat exchange device for a refrigerated dryer according to claim 4, characterized in that, The lower part of the left side plate of the heat exchanger is provided with a first receiving cavity and a second receiving cavity from top to bottom. A rotating shaft is horizontally rotatably arranged in the second receiving cavity. A rotating roller is fixedly sleeved on the rotating shaft. A connecting rope is provided on the rotating roller. The left end of the rotating shaft extends to the outside of the left side plate of the heat exchanger. An inverted T-shaped limiting block is slidably arranged in the first receiving cavity. A spring is provided between the horizontal block of the inverted T-shaped limiting block and the bottom of the first receiving cavity. A limiting hole is vertically arranged on the positioning block for the vertical block of the inverted T-shaped limiting block to pass through. A first through hole for the vertical block to pass through is provided between the positioning groove and the first receiving cavity. A second through hole for the connecting rope to pass through is provided between the first receiving cavity and the second receiving cavity. The upper end of the connecting rope is connected to the horizontal block.

6. The heat exchange device for a refrigerated dryer according to claim 5, characterized in that, A rotating block is provided at the left end of the rotating shaft; a handle is provided on the left side of the baffle.

7. The heat exchange device for a refrigerated dryer according to any one of claims 1 to 6, characterized in that, The intake pipe is connected to the exhaust pipe via a connecting pipe, and an intake valve is provided on the connecting pipe.

8. The heat exchange device for a refrigerated dryer according to claim 7, characterized in that, A temperature sensor is installed in the right chamber, and the air intake valve is a solenoid valve. The temperature sensor and the air intake valve are electrically connected to the controller.

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