Cooling device for puffed pet food dryer

Abstract

The utility model relates to the field of pet food production, in particular to a cooling device for a puffed pet food dryer, which is matched with the dryer for use and comprises a cooling fan, a fan control unit and an air pipe. And the fan control unit is electrically connected to a main controller of the dryer. And the cooling fan is electrically connected to a power supply through the fan control unit. One end of the air pipe is connected to the cooling fan, and the other end of the air pipe penetrates through the drying cavity of the drying machine and extends into the drying cavity. And an air outlet is formed in the air pipe. After the cooling device for the puffed pet food dryer is mounted, the temperature of the discharged puffed pet food is between 48 DEG C and 52 DEG C, so that condensed water is prevented from being condensed on the surface of a product, the quality of the product is further guaranteed, and the puffed food is prevented from mildewing and decaying caused by the condensed water.

Description

Technical Field

[0001] The utility model relates to the field of pet food production, in particular to a cooling device for a puffed pet food dryer. Background Art

[0002] The puffed pet food dryer is used to produce puffed pet food. In the prior art, the temperature of the dryer is between 59°C and 62°C when the material is discharged. When the room temperature is low, such as in winter, a lot of condensed water will be generated on the surface of the puffed pet food after discharge, affecting the quality of the product. Utility Model Content

[0003] The purpose of the utility model is to provide a cooling device for an expanded pet food dryer, which solves the problems encountered in the above-mentioned prior art through a special structural design and is used in conjunction with the expanded pet food dryer.

[0004] The utility model provides a cooling device for a puffed pet food dryer, which is used in conjunction with the dryer and is characterized in that it comprises a cooling fan, a fan control unit and an air duct; the fan control unit is electrically connected to a main controller of the dryer; the cooling fan is electrically connected to a power supply through the fan control unit; one end of the air duct is connected to the cooling fan, and the other end passes through a drying cavity of the dryer and extends into the drying cavity; an air outlet is arranged on the air duct.

[0005] Furthermore, the fan control unit includes a controller extension module and a relay module; the controller extension module is electrically connected to the main controller; the control end of the relay module is electrically connected to the dryer control extension module, and the output end of the relay module is electrically connected to the cooling fan and the power supply.

[0006] Furthermore, the relay module includes an intermediate relay and an AC contactor; the control end of the intermediate relay is electrically connected to the dryer control expansion module, and the output end of the intermediate relay module is electrically connected to the control end of the AC contactor; the output end of the AC contactor is electrically connected to the cooling fan and the power supply.

[0007] Furthermore, the output end of the intermediate relay is a low-voltage circuit.

[0008] Furthermore, the output end of the AC contactor is a high-voltage circuit.

[0009] Furthermore, the cross-section of the air duct is circular or rectangular.

[0010] Furthermore, the air duct enters the interior of the drying cavity from one side of the drying cavity and extends horizontally to the other side of the drying cavity.

[0011] Furthermore, the air outlet is vertically arranged below the air duct.

[0012] Furthermore, there are multiple air outlets.

[0013] Furthermore, in the drying chamber, the air outlets are evenly distributed along the axial direction of the air duct.

[0014] The cooling device for the puffed pet food dryer of the utility model is linked with the puffed pet food dryer to introduce cold air to control the temperature during drying. Compared with the prior art, the cooling device has the following characteristics: after the cooling device is installed, the temperature of the puffed pet food after discharge is between 48°C and 52°C, thereby preventing condensed water from condensing on the surface of the product, thereby ensuring the quality of the product and avoiding the mold and corruption of the puffed food caused by condensed water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a preferred embodiment of the cooling device for the puffed pet food dryer of the utility model;

[0016] Figure 2 This is a schematic diagram of module connection of a preferred embodiment of a cooling device for a puffed pet food dryer of the utility model;

[0017] Figure 3 It is an electrical schematic diagram of a main controller and a controller expansion module of a preferred embodiment of a cooling device for an expanded pet food dryer of the utility model;

[0018] Figure 4 It is an electrical schematic diagram of a control circuit of a preferred embodiment of the cooling device for the puffed pet food dryer of the utility model;

[0019] Figure 5 The utility model is an electrical schematic diagram of a main circuit of a preferred embodiment of a cooling device for a puffed pet food dryer.

[0020] Among them, 100-cooling fan, 200-fan control unit, 300-air duct, 400-dryer;

[0021] 201-controller expansion module, 202-intermediate relay, 203-AC contactor;

[0022] 301-air outlet; 401-main controller. DETAILED DESCRIPTION

[0023] The specific embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0024] See also Figures 1 to 5 The utility model discloses a cooling device for a puffed pet food dryer. A preferred embodiment of the cooling device is used in conjunction with a puffed pet food dryer 400 and is composed of a cooling fan 100, a fan control unit 200 and an air duct 300.

[0025] The fan control unit is composed of a controller expansion module 201, an intermediate relay 202 and an AC contactor 203. The intermediate relay 202 and the AC contactor 203 constitute a relay module. In other embodiments, the relay module may have different combinations, such as a configuration including only one control relay.

[0026] The controller expansion module 201 is a Siemens output expansion module (model DO32), one end of which is electrically connected to the main controller 401 (Siemens PLC, model: S7-300) of the dryer 400, and the other end is electrically connected to the control end of the intermediate relay 202 (LC1D09M5C relay of Schneider Electric). The intermediate relay 202 belongs to the control circuit, and its output end is in the 24V low-voltage circuit. It is electrically connected to the control end of the AC contactor 203. The AC contactor 203 belongs to the main circuit, and its output end is in the 380V high-voltage circuit, which is electrically connected to the cooling fan 100 and the power supply respectively. The controller expansion module 201 obtains the control signal from the main controller 401, and then, under the control of the main controller 401, uses the control end of the intermediate relay 202 to connect or port the output end of the intermediate relay 202. When the output end of the intermediate relay 202 is connected, the AC contactor 203 is activated, and the cooling fan 100 (CF-I1 type of Shanghai Guangxing Electromechanical) at the output end of the AC contactor 203 is connected to the power supply, so that the cooling fan 100 works. Conversely, when the output end of the intermediate relay 202 is disconnected, the AC contactor 203 is activated, and the cooling fan 100 at the output end of the AC contactor 203 is isolated from the power supply, so that the cooling fan 100 stops.

[0027] The air duct 300 is made of stainless steel and is used to guide the external low-temperature gas into the interior of the drying chamber of the dryer 400, and then leave from the air outlet 301 set on the air duct 300 to mix with the high-temperature gas in the drying chamber. In this embodiment, the cross-section of the air duct 300 is circular. In other embodiments, the cross-section of the air duct 300 can also be rectangular. The air duct 300 enters the interior of the drying chamber from one side of the drying chamber, and then extends horizontally to the other side of the drying chamber. Below the air duct 300 in the drying chamber, multiple rows of air outlets 301 arranged parallel to the axial direction are vertically arranged, so that the airflow from the cooling fan 100 blows vertically from top to bottom to the material in the drying chamber to cool the material. Each row includes multiple air outlets 301, which are evenly distributed along the axial direction of the air duct 300. According to the different shapes of the drying chamber, air outlets 301 in different directions can also be set to obtain a better cooling effect.

[0028] The working principle of the utility model is briefly described as follows:

[0029] When the dryer 400 is started, the main controller 401 of the dryer 400 sends the main fan operation signal (Y12) to the control end of the intermediate relay 202 through the controller expansion module 201. The output end (KA1) of the intermediate relay 202 is activated, and the signal of the cooling fan 100 operation is sent to the control end of the AC contactor 203. After the output end (KM1) of the AC contactor 203 is energized, the three-phase power supply (L1, U1 and V1) of the cooling fan 100 is connected, and the cooling fan 100 starts to run and blows air to cool the material. When the dryer 400 stops and the main fan operation signal stops, the output end (KA1) of the intermediate relay 202 is disconnected, causing the output end (KM1) of the AC contactor 203 to operate, cut off the power supply of the cooling fan 100, and the cooling fan stops running and stops blowing air.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, any equivalent changes and modifications made according to the content of the patent application scope of the present invention should be within the technical scope of the present invention.

Claims

1. A cooling device for a puffed pet food dryer, used in conjunction with the dryer, characterized in that: It comprises a cooling fan, a fan control unit and an air duct; the fan control unit is electrically connected to the main controller of the dryer; the cooling fan is electrically connected to a power supply through the fan control unit; one end of the air duct is connected to the cooling fan, and the other end passes through the drying cavity of the dryer and extends into the drying cavity; an air outlet is arranged on the air duct.

2. The cooling device for the puffed pet food dryer according to claim 1, characterized in that: The fan control unit includes a controller expansion module and a relay module; the controller expansion module is electrically connected to the main controller; the control end of the relay module is electrically connected to the dryer control expansion module, and the output end of the relay module is electrically connected to the cooling fan and the power supply.

3. The cooling device for the puffed pet food dryer according to claim 2, characterized in that: The relay module includes an intermediate relay and an AC contactor; the control end connected to the intermediate relay is electrically connected to the dryer control expansion module, and the output end of the intermediate relay module is electrically connected to the control end of the AC contactor; the output end of the AC contactor is electrically connected to the cooling fan and the power supply.

4. The cooling device for the puffed pet food dryer according to claim 3, characterized in that: The output end of the intermediate relay is a low-voltage circuit.

5. The cooling device for the puffed pet food dryer according to claim 3, characterized in that: The output end of the AC contactor is a high-voltage circuit.

6. The cooling device for the puffed pet food dryer according to claim 1, characterized in that: The cross section of the air duct is circular or rectangular.

7. The cooling device for the puffed pet food dryer according to claim 1, characterized in that: The air duct enters the interior of the drying cavity from one side of the drying cavity and extends horizontally to the other side of the drying cavity.

8. The cooling device for the puffed pet food dryer according to claim 1, characterized in that: The air outlet is vertically arranged below the air duct.

9. The cooling device for the puffed pet food dryer according to claim 1, characterized in that: There are multiple air outlets.

10. The cooling device for the puffed pet food dryer according to claim 7, characterized in that: In the drying chamber, the air outlets are evenly distributed along the axial direction of the air duct.

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