CN221677529U - A bamboo tube drying and desugaring equipment - Google Patents

Abstract

The utility model discloses a bamboo tube drying and desugaring device, comprising a closed kiln body with a kiln door, an axial flow fan and an air heater are arranged in the kiln body, a water collecting device is arranged along the kiln body bottom plate in the kiln body, a normal pressure water tank is arranged outside the kiln body, a water supply pipe is connected between the water collecting device and the normal pressure water tank to make the liquid level in the water collecting device always higher than the set height, an overflow exhaust device is also connected between the water collecting device and the normal pressure water tank to prevent the liquid level in the water collecting device from exceeding the limit height and the pressure in the kiln body from exceeding the limit pressure, the overflow exhaust device comprises an overflow pipe connected to the normal pressure water tank and a connecting pipe connected to the water collecting device, a water-gas separation device is arranged between the overflow pipe and the connecting pipe, and the water-gas separation device comprises a vertical pipe connecting the overflow pipe and the connecting pipe. The device can simultaneously complete the drying and desugaring treatment of the bamboo tube, the desugaring process does not use chemical agents, and the desugaring and drying treatments will not cause the bamboo tube to crack.

Description

A bamboo tube drying and desugaring equipment

Technical Field

The utility model relates to bamboo material drying equipment, in particular to equipment used for drying and desugaring bamboo tubes.

Background Art

Bamboo is a fast-growing natural material with a short growth cycle and abundant resource supply. Compared with wood, bamboo is more sustainable and has less impact on forest resources. However, since bamboo is mainly composed of three substances: cellulose, hemicellulose and lignin, the main component of cellulose is glucose, and the main component of hemicellulose is xylan and arabinose. In addition, fresh bamboo also contains a small amount of starch. These sugars provide conditions for mold reproduction, so that bamboo that has not been desugared will not only mold after a period of use, but also breed borers. In order to overcome this drawback, bamboo is usually desugared before processing. There are usually two ways to desugar bamboo, one is to steam and cook the bamboo, and the other is to use chemical agents to dissolve or decompose the sugar in the bamboo. After the chemical agent treatment, it is easy to have drug residues in the bamboo, and the steaming treatment will increase the moisture content of the bamboo. After the steaming and desugaring treatment, it is also necessary to use a drying device to dehydrate and dry the desugared bamboo. There is no equipment in the prior art that can simultaneously complete the drying and desugaring of bamboo tubes.

Utility Model Content

The technical problem to be solved by the utility model is to provide a bamboo tube drying and desugaring device, which can simultaneously complete the drying and desugaring treatment of the bamboo tube, the desugaring process does not use chemical agents, and the desugaring and drying treatments will not cause the bamboo tube to crack.

The technical solution adopted to solve the technical problem: a bamboo tube drying and desugaring equipment, including a closed kiln body with a kiln door, an axial flow fan and an air heater are arranged in the kiln body, a water collecting device is arranged inside the kiln body along the bottom plate of the kiln body, a normal pressure water tank is arranged outside the kiln body, a water supply pipe is connected between the water collecting device and the normal pressure water tank to ensure that the liquid level height in the water collecting device is always higher than the set height, and an overflow exhaust device is also connected between the water collecting device and the normal pressure water tank to prevent the liquid level height in the water collecting device from exceeding the limit height and the pressure in the kiln body from exceeding the limit pressure.

As a further improvement of the utility model: the overflow exhaust device includes an overflow pipe connected to the atmospheric pressure water tank and a connecting pipe connected to the water collecting device, and a water-gas separation device is installed between the overflow pipe and the connecting pipe.

As a further improvement of the present utility model: the water-gas separation device includes a standpipe connecting the overflow pipe and the connecting pipe, the lower end of the standpipe is closed, the overflow pipe and the connecting pipe are vertically connected to the standpipe respectively, and the lower edge of the connection port between the overflow pipe and the standpipe is higher than the upper edge of the connection port between the connecting pipe and the standpipe.

As a further improvement of the utility model: an air guide pipe for introducing the gas separated by the standpipe into the atmospheric pressure water tank is connected to the upper end of the standpipe.

As a further improvement of the utility model: a water supply one-way valve and a water supply stop valve are arranged on the water supply pipe, and an overflow one-way valve and an overflow stop valve are arranged on the overflow pipe.

As a further improvement of the utility model: a water injection pipe is connected to the normal pressure water tank, and a float valve for controlling the height of the water injection level of the normal pressure water tank is installed at the water injection pipe opening.

As a further improvement of the utility model: a plurality of axial flow fans are arranged in the kiln body, and an air heater is arranged at the air outlet of each axial flow fan.

As a further improvement of the utility model: the kiln body is a horizontal tank, the kiln door is located at one end of the horizontal tank, and the water collecting device is surrounded by the arc bottom of the horizontal tank, the end plate of the horizontal tank and the kiln door.

As a further improvement of the utility model: the kiln door is a barrel-shaped kiln door composed of a barrel body and an end plate, and the axial flow fan and the air heater located at the end of the kiln door are installed in the barrel body of the barrel-shaped kiln door.

As a further improvement of the utility model: a water level gauge is installed on the outer wall of the normal pressure water tank, and drain pipes are installed at the bottom of the normal pressure water tank and the bottom of the water collecting device respectively.

Beneficial effects: The bamboo tube drying and desugaring equipment of the utility model adopts a water collecting device arranged on the bottom plate of the closed kiln body, uses an axial flow fan and an air heater to heat the bamboo tube, and arranges a normal pressure water tank outside the kiln body to maintain the water level of the water collecting device in the kiln body, so that the water in the water collecting device can evaporate continuously during the heating process to maintain the necessary humidity in the kiln body, thereby preventing the bamboo tube from cracking during the desugaring and drying process. At the same time, due to the technical feature that an overflow exhaust device is connected between the water collecting device and the normal pressure water tank to prevent the liquid level in the water collecting device from exceeding the limit height and the pressure in the kiln body from exceeding the limit pressure, the water and sugar coming out of the bamboo tube during the heating process condense and converge in the water collecting device, and can overflow and discharge the kiln body in time. At the same time, it can also prevent the danger caused by the increase of the internal pressure of the kiln body during the heating process. Therefore, the bamboo tube drying and desugaring equipment of the utility model can complete the drying and desugaring of the bamboo tube in one device at the same time, and no chemical agent is used in the desugaring process, and the desugaring and drying process will not cause the bamboo tube to crack. Due to the technical features that the overflow exhaust device includes an overflow pipe connected to the atmospheric water tank and a connecting pipe connected to the water collecting device, and a water-gas separation device is installed between the overflow pipe and the connecting pipe, it is possible to prevent the soda-water mixture from directly entering the atmospheric water tank through the overflow pipe, causing the water in the atmospheric water tank and the water collecting device to surge, so that the liquid level in the water collecting device is always kept in a calm state. Due to the technical features that the water-gas separation device includes a riser connecting the overflow pipe and the connecting pipe, the lower end of the riser is closed, the overflow pipe and the connecting pipe are respectively vertically connected to the riser, and the lower edge of the connection port of the overflow pipe and the riser is higher than the upper edge of the connection port of the connecting pipe and the riser, the height difference between the two connection ports in the riser can be used to implement a water seal on the connecting pipe, so as to appropriately increase the pressure, boiling point and temperature in the kiln body, so that the bamboo tube drying and desugaring equipment of the utility model can safely dry and desugar the bamboo tubes in the kiln body within the range of 100-110 degrees Celsius, while improving the drying speed and desugaring effect, the safety is not affected, and the bamboo tubes will not crack during the treatment process. Due to the technical features of providing a water supply check valve and a water supply stop valve on the water supply pipe, and installing an overflow check valve and an overflow stop valve on the overflow pipe, the environmental atmosphere in the kiln can be conveniently adjusted according to the conditions of the bamboo tubes in the kiln during operation, so that the bamboo tube drying and desugaring equipment of the utility model can meet the drying and desugaring treatment of bamboo tubes of various diameters and wall thicknesses. Due to the technical features of connecting a water injection pipe to a normal pressure water tank and installing a float valve at the water injection pipe mouth to control the water level height of the normal pressure water tank, the water level of the water collection device in the kiln can be conveniently maintained to avoid cracking of the bamboo tubes due to lack of water in the water collection device, thereby ensuring the quality of bamboo tube drying and desugaring. Due to the technical features of providing multiple axial flow fans in the kiln and providing an air heater at the air outlet of each axial flow fan, the temperature and humidity distribution inside the kiln is more uniform. Due to the technical features that the kiln body is a horizontal tank, the kiln door is located at one end of the horizontal tank, and the water collection device is surrounded by the arc bottom of the horizontal tank, the end plate of the horizontal tank, and the kiln door, the structure of the bamboo tube drying and desugaring equipment of the utility model is simpler, and the water collection device will not affect the arrangement of the track at the bottom of the kiln body and the normal operation of the kiln car. Due to the technical features that the kiln door is a barrel-shaped kiln door composed of a cylinder and an end plate, and the axial flow fan and air heater at the kiln door end are installed in the barrel of the barrel-shaped kiln door, it can effectively prevent the fan and air heater at the kiln door end from interfering with the kiln car and the bamboo tube entering and exiting the kiln. Due to the technical features that a water level gauge is installed on the outer wall of the normal pressure water tank, and drain pipes are installed at the bottom of the normal pressure water tank and the bottom of the water collection device, respectively, water level monitoring and management are more convenient.

BRIEF DESCRIPTION OF THE DRAWINGS

The bamboo tube drying and sugar removal equipment of the utility model will be further described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural diagram of a bamboo tube drying and desugaring device of the present invention;

FIG. 2 is a schematic diagram of the cross-sectional structure of a kiln body in the bamboo tube drying and sugar removal equipment of the present invention.

DETAILED DESCRIPTION

As shown in Figures 1 and 2, the bamboo tube drying and desugaring equipment of the utility model includes a closed kiln body 3 with a kiln door. The kiln body of the embodiment shown in Figure 1 is composed of a horizontal steel tank body, and the kiln door is located at one end of the horizontal tank. An axial flow fan 21 and an air heater 22 are arranged in the kiln body. The driving motor 4 of the axial flow fan is installed outside the kiln body. A water collecting device 20 that can collect condensed water in the kiln body is arranged inside the kiln body along the direction of the kiln body bottom plate and close to the kiln body bottom plate. A normal pressure water tank 13 is arranged outside the kiln body, a water level gauge 11 is installed on the outer wall of the normal pressure water tank, and a drain pipe 15 and a drain valve 16 are respectively installed at the bottom of the normal pressure water tank and the bottom of the water collecting device. A water supply pipe 17 is connected between the water collecting device and the normal pressure water tank to ensure that the liquid level in the water collecting device is always higher than the set height. The water supply pipe connects the water collecting device and the normal pressure water tank from the bottom to form a communicating vessel. An overflow exhaust device is also connected between the water collecting device and the normal pressure water tank to prevent the liquid level in the water collecting device from exceeding the limit height and the pressure in the kiln body from exceeding the limit pressure.

As shown in FIG. 1 , the overflow exhaust device comprises an overflow pipe 7 connected to the atmospheric pressure water tank and a connecting pipe 5 connected to the water collecting device, and a water-gas separation device is installed between the overflow pipe and the connecting pipe.

The water-gas separation device comprises a standpipe 6 connecting an overflow pipe and a connecting pipe, the lower end of the standpipe is closed, the overflow pipe and the connecting pipe are respectively connected vertically to the standpipe, and the lower edge of the connection port of the overflow pipe and the standpipe is higher than the upper edge of the connection port of the connecting pipe and the standpipe. The upper end of the standpipe is connected with a gas guide pipe 10 for guiding the gas separated by the standpipe into a normal pressure water tank, a water replenishment check valve 18 and a water replenishment stop valve 19 are provided on the water replenishment pipe, and an overflow check valve 9 and an overflow stop valve 8 are installed on the overflow pipe. During the bamboo tube drying process, when the evaporation rate of water in the water collecting device is greater than the water collecting rate, the water supply stop valve on the water supply pipe opens, and the normal pressure water tank automatically supplies water to the water collecting device, which can prevent the water in the water collecting device from completely evaporating and causing the humidity in the kiln body to decrease, thereby causing the bamboo tube to crack; when the evaporation rate of water in the water collecting device is less than the water collecting rate, the water supply stop valve on the water supply pipe closes, and when the liquid level in the water collecting device exceeds the height of the lower edge of the overflow pipe, it will flow into the normal pressure water tank through the overflow pipe. Since an overflow one-way valve is installed on the overflow pipe, when the liquid level of the normal pressure water tank is higher than the water collecting device, the accumulated water in the water collecting device can also be pressed into the normal pressure water tank under the pressure in the kiln. At the same time, since the overflow pipe connection port in the vertical pipe is higher than the connecting pipe connection port, the accumulated water in the vertical pipe can form a water seal effect on the connecting pipe, which will increase the pressure, temperature and boiling point in the kiln body without causing safety hazards. A water injection pipe 14 is connected to the normal pressure water tank, and a float valve 12 for controlling the water level of the normal pressure water tank is installed at the water injection pipe port, thereby realizing automatic water replenishment of the normal pressure water tank, and then ensuring that the liquid level in the water collection device is not lower than the set height through the water replenishment pipe.

Preferably, a plurality of axial flow fans are provided in the kiln body, and an air heater is provided at the air outlet of each axial flow fan.

Preferably, the water collecting device is formed by the arc bottom of the horizontal tank, the end plate of the horizontal tank and the kiln door. The kiln door is a barrel-shaped kiln door composed of a cylinder 2 and an end plate 1, and the axial flow fan and air heater at the kiln door end are installed in the cylinder of the barrel-shaped kiln door.

The bamboo tube drying and desugaring equipment of the utility model can heat the bamboo tubes in the kiln body to 100-110 degrees Celsius under the protection of steam. On the premise of ensuring that the bamboo tubes do not crack, the bamboo tube drying and desugaring speed is maximized, and the drying and desugaring of the bamboo tubes are completed simultaneously in one device. The treated bamboo tubes will not mold, be worm-eaten, crack or deform during long-term use, and can meet the use needs of bamboo product companies that have special requirements for bamboo tubes.

Claims (10)

1. The utility model provides a thick bamboo tube drying and desugaring equipment, includes the closed kiln body that has the kiln door, is equipped with axial fan and air heater in the kiln body, characterized by: the kiln body is internally provided with a water collecting device along the bottom plate of the kiln body, the kiln body is externally provided with a normal pressure water tank, a water supplementing pipe which enables the liquid level height in the water collecting device to be always higher than the set height is connected between the water collecting device and the normal pressure water tank, and an overflow exhaust device which prevents the liquid level height in the water collecting device from exceeding the limit height and the pressure in the kiln body from exceeding the limit pressure is also connected between the water collecting device and the normal pressure water tank.

2. The bamboo tube drying and desugaring apparatus of claim 1, wherein: the overflow exhaust device comprises an overflow pipe connected with the normal pressure water tank and a communicating pipe connected with the water collecting device, and a water-gas separation device is arranged between the overflow pipe and the communicating pipe.

3. The bamboo tube drying and desugaring apparatus of claim 2, wherein: the water-gas separation device comprises a vertical pipe communicated with the overflow pipe and the communicating pipe, the lower end of the vertical pipe is closed, the overflow pipe and the communicating pipe are respectively and vertically connected with the vertical pipe, and the lower edge of the connecting port of the overflow pipe and the vertical pipe is higher than the upper edge of the connecting port of the communicating pipe and the vertical pipe.

4. A bamboo tube drying and desugaring apparatus in accordance with claim 3, wherein: an air duct for guiding the air separated from the vertical pipe into the normal pressure water tank is connected to the upper end of the vertical pipe.

5. The bamboo tube drying and desugaring apparatus of claim 4, wherein: the water replenishing pipe is provided with a water replenishing one-way valve and a water replenishing stop valve, and the overflow pipe is provided with an overflow one-way valve and an overflow stop valve.

6. Bamboo tube drying and desugaring apparatus according to any one of claims 1 to 5, characterized in that: the normal pressure water tank is connected with a water injection pipe, and a ball float valve for controlling the water injection level of the normal pressure water tank is arranged at the water injection pipe orifice.

7. The bamboo tube drying and desugaring apparatus of claim 6, wherein: the kiln body is internally provided with a plurality of axial fans, and an air heater is arranged at the air outlet of each axial fan.

8. The bamboo tube drying and desugaring apparatus of claim 7, wherein: the kiln body is a horizontal tank, the kiln door is positioned at one end of the horizontal tank, and the water collecting device is formed by enclosing the arc-shaped bottom of the horizontal tank, the end plate of the horizontal tank and the kiln door.

9. The bamboo tube drying and desugaring apparatus of claim 8, wherein: the kiln door is a barrel-shaped kiln door formed by a barrel body and an end plate, and an axial flow fan and an air heater which are positioned at the end of the kiln door are arranged in the barrel body of the barrel-shaped kiln door.

10. The bamboo tube drying and desugaring apparatus of claim 1, wherein: a water level gauge is arranged on the outer wall of the normal pressure water tank, the bottom of the normal pressure water tank and the bottom of the water collecting device are respectively provided with a water drain pipe.