CN221647881U - A kind of airtight device for defrosting drainage pipe of cold storage - Google Patents

Abstract

The utility model provides an airtight device of a defrosting drain pipe of a refrigeration house, which comprises an airtight valve, wherein the upper end and the lower end of the airtight valve are respectively connected with a U-shaped elbow, the U-shaped elbow connected to the lower end of the airtight valve is connected with a water inlet pipe, and the U-shaped elbow connected to the upper end of the airtight valve is connected with a water outlet pipe; the water inlet pipe is connected with the evaporator water outlet hole, and the frost-melting water flows in from the water inlet pipe, passes through the airtight valve and is discharged from the water outlet pipe. The utility model can effectively prevent the humidity in the refrigerator from being increased, the refrigerating efficiency of the evaporator from being reduced, the refrigerating energy consumption from being increased, the air tightness of the device is better, and the practicability is higher when the drainage purpose is realized.

Description

A kind of airtight device for defrosting drainage pipe of cold storage

Technical Field

The utility model relates to the technical field of cold storage and refrigeration, and in particular to an airtight device for a defrosting drainage pipe of a cold storage.

Background Art

When the cold storage is in operation, the evaporator of the cold storage refrigeration system will frost, causing the heat exchange performance of the evaporator to decrease, and the refrigeration efficiency of the cold storage will decrease. Therefore, the evaporator of the cold storage needs to be defrosted regularly, and the defrosted water is discharged out of the cold storage through the pipe. Because the drainage pipe is connected to the outside of the storage, in order to prevent the hot and humid air from the outside from entering the storage through the drainage pipe, the conventional practice is to add a U-shaped elbow to the drainage pipe to form a sinking bend. However, in actual applications, if the evaporator is not frosted or the defrosting amount is small, the liquid in the sinking bend cannot be replenished, and the liquid in the pipe continues to evaporate with time. When the liquid evaporates to a certain extent, the pressure difference between the inside and outside of the storage can no longer be maintained, and the gas outside the storage will enter the storage, causing the humidity in the cold storage to increase, the refrigeration efficiency of the evaporator to decrease, and the refrigeration energy consumption to increase. This problem is particularly prominent in seed storage warehouses that require low humidity and gas conditioning warehouses that require air tightness.

Summary of the invention

In view of the deficiencies in the above-mentioned technologies, the purpose of the utility model is to provide an airtight device for defrosting drainage pipes in a cold storage, including an airtight valve, a U-shaped elbow, a water inlet pipe and a water outlet pipe. A water column of a certain height is formed in the U-shaped water sinking bend. A float that moves up and down with the change of water level is provided in the airtight valve. When the water level rises, the connecting rod connected to the float pushes the sealing gasket up, and the water is discharged through the valve hole. When the water in the water sinking bend evaporates and the water level drops, the sealing gasket fits tightly to the surface of the valve hole, so that a sealed state is formed in the water sinking bend, preventing the evaporation of the liquid in the pipe from causing the hot and humid air outside the warehouse to flow back, causing the temperature inside the warehouse to increase, the gas composition to change, and the evaporator to be seriously frosted. The valve body of the airtight device can be cut to different lengths, and the weight of the pressure plate can be adjusted appropriately, thereby regulating the drainage and exhaust pressure difference in the warehouse to ensure the airtightness of the cold storage. Compared with conventional drainage devices, this device has better airtightness and higher reliability.

The specific technical solution is:

A cold storage defrost drain pipe airtight device comprises an airtight valve, wherein the upper and lower ends of the airtight valve are respectively connected with a U-shaped elbow, the U-shaped elbow connected to the lower end of the airtight valve is connected to a water inlet pipe, and the U-shaped elbow connected to the upper end of the airtight valve is connected to a water outlet pipe; the water inlet pipe is connected to a drain hole of an evaporator, and thawed water flows in from the water inlet pipe, passes through the airtight valve, and is discharged from the water outlet pipe.

The airtight valve comprises a valve body that can be cut to length, wherein the valve body is provided with a platform, and the platform is provided with a valve hole and a connecting rod hole, wherein the valve hole is used for drainage, and the connecting rod hole is used for the connecting rod to pass through, and the connecting rod can freely move up and down in the connecting rod hole;

A float is fixedly installed on the connecting rod below the platform; a flat gasket, a sealing gasket, and a pressure plate are installed on the connecting rod from bottom to top, and fixed by nuts; the sealing gasket is movably connected to the inner wall of the valve body in a sealing manner.

When the water level rises, the float drives the sealing gasket to move upward as a whole, and the liquid in the submerged bend flows out through the valve hole to achieve the purpose of drainage. After the drainage is completed, the float and the connecting rod can keep the sealing gasket away from the water surface, keep it dry, prevent the sealing gasket from sticking, and maintain a good sealing effect; when the water evaporates and the water level drops, the float drives the sealing gasket to move downward as a whole, and the sealing gasket fits tightly to the surface of the valve hole, forming a sealed state in the submerged bend.

A boss is provided below the connecting rod hole to limit the height of the float. The boss is installed below the platform, and its diameter is larger than the diameter of the connecting rod, smaller than the diameter of the float, and communicates with the connecting rod hole. The connecting rod moves up and down through the boss and the connecting rod hole; the boss height can control the upward movement of the float, prevent the connecting rod from tilting, and avoid the sealing pad and the pressure plate from being stuck at the U-shaped elbow.

The pressure plate is an adjustable weight structure. The valve body can be freely cut to the length of the lower end. By cutting the lower end of the valve body at different lengths and adjusting the weight of the pressure plate, the pressure difference between the inside and outside of the warehouse can be controlled, thereby preventing the outside air from being sucked into the warehouse, or the gas in the warehouse from being discharged outside the warehouse, which affects the refrigeration effect and air tightness of the cold storage.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the overall structure of the utility model device;

Figure 2 is an overall side view of the device of the utility model;

FIG3 is a schematic diagram of the overall structure of the airtight valve of the utility model device.

DETAILED DESCRIPTION

The specific implementation of the utility model is described in conjunction with the accompanying drawings.

As shown in Fig. 1 and Fig. 2, a defrosting drain pipe airtight device for a cold storage comprises an airtight valve 1, and the upper and lower ends of the airtight valve 1 are respectively connected with a U-shaped elbow 2, the U-shaped elbow 2 connected to the lower end of the airtight valve 1 is connected to a water inlet pipe 3, and the U-shaped elbow 2 connected to the upper end of the airtight valve 1 is connected to a water outlet pipe 4; the water inlet pipe 3 is connected to the drain hole of the evaporator, and the thawed water flows in from the water inlet pipe 3, passes through the airtight valve 1, and is discharged from the water outlet pipe 4;

The U-shaped elbow 2 is used to connect the airtight valve 1, the water inlet pipe 3 and the water outlet pipe 4. The water inlet pipe 3 is connected to the drain hole of the evaporator. The frost-melted water flows through the water inlet pipe 3, the U-shaped elbow 2, the airtight valve 1 and the water outlet pipe 4.

As shown in FIG3 , the airtight valve 1 comprises a valve body 10 that can be cut to length, wherein a platform is provided inside the valve body 10, and a valve hole 101 and a connecting rod hole 102 are provided on the platform. The valve hole 101 is used for drainage, and the connecting rod hole 102 is used for the connecting rod 11 to pass through, and the connecting rod 11 can freely move up and down in the connecting rod hole 102;

A boss 103 is provided below the connecting rod hole 102 to limit the height of the float 12;

Below the platform, a float 12 is fixedly mounted on the connecting rod 11; above the platform, a flat washer 13, a sealing washer 14, and a pressure plate 15 are sequentially mounted on the connecting rod 11 from bottom to top, and fixed by a nut 16; the sealing washer 14 is movably connected to the inner wall of the valve body 10 in a sealing manner;

The pressing plate 15 is an adjustable weight structure.

When the water level rises, the float 12 drives the plastic sealing gasket 14 to move upward, the valve hole 101 opens, and the liquid in the submerged bend of the U-shaped elbow 2 at the lower end of the airtight valve 1 flows out through the valve hole 101 and enters the outlet pipe 4 to achieve the purpose of drainage. After the drainage is completed, the length of the connecting rod 11 can keep the sealing gasket 14 away from the water surface, keep it dry, prevent the sealing gasket from sticking, and maintain a good sealing effect; when the water level drops, the float 12 drives the sealing gasket 14 to move downward as a whole, and the sealing gasket 14 is tightly attached to the surface of the valve hole 101, and the valve hole 101 is closed, so that a sealed state is formed in the submerged bend of the U-shaped elbow 2 at the lower end of the airtight valve 1;

The boss 103 is below the platform, the diameter of the boss 103 is larger than the diameter of the connecting rod 11 and smaller than the diameter of the float 12 , and is communicated with the connecting rod hole 102 , and the connecting rod 11 moves up and down through the boss 103 and the connecting rod hole 102 .

The boss 103 can effectively control the upward movement of the float 12, prevent the connecting rod 11 from tilting, and prevent the sealing gasket 14 and the pressure plate 15 from being stuck at the U-shaped elbow 2 at the upper end of the airtight valve 1;

The length of the lower end of the valve body 10 can be freely cut. By cutting different lengths of the lower end of the valve body 10 and adjusting the weight of the pressure plate 15, the pressure difference between the inside and outside of the cold storage can be controlled to ensure the air tightness of the cold storage.

Claims (4)

1. The airtight device for the defrosting drain pipe of the refrigeration house is characterized by comprising an airtight valve (1), wherein the upper end and the lower end of the airtight valve (1) are respectively connected with a U-shaped elbow (2), the U-shaped elbow (2) connected to the lower end of the airtight valve (1) is connected with a water inlet pipe (3), and the U-shaped elbow (2) connected to the upper end of the airtight valve (1) is connected with a water outlet pipe (4); the water inlet pipe (3) is connected with the evaporator drain hole, and frost-melt water flows in from the water inlet pipe (3), passes through the airtight valve (1) and is discharged from the water outlet pipe (4).

2. The airtight device of a defrosting drain pipe for a refrigeration house according to claim 1, wherein the airtight valve (1) comprises a valve body (10) with a tailorable length, a platform is arranged in the valve body (10), a valve hole (101) and a connecting rod hole (102) are arranged on the platform, the valve hole (101) is used for draining water, the connecting rod hole (102) is used for a connecting rod (11) to pass through, and the connecting rod hole (102) can move up and down freely;

a floater (12) is fixedly arranged on the connecting rod (11) below the platform; a flat pad (13), a sealing pad (14) and a pressing plate (15) are sequentially arranged above the platform from bottom to top, and are fixed through a nut (16); the sealing gasket (14) is movably connected with the inner wall of the valve body (10) in a sealing way.

3. The airtight device for a defrosting drain pipe of a refrigeration house according to claim 2, wherein a boss (103) for limiting the height of the float (12) is arranged below the connecting rod hole (102).

4. -A freezer defrosting drain pipe airtight device according to claim 2, characterized in that the pressure plate (15) is of a weight-adjustable construction.