CN112629193A

CN112629193A - Negative pressure formula bamboo timber desiccator

Info

Publication number: CN112629193A
Application number: CN202110031842.3A
Authority: CN
Inventors: 李文育; 陈平传; 杨明杰; 李美虹; 吴佛丽
Original assignee: Liancheng Zhujiang New Material Co ltd
Current assignee: Liancheng Zhujiang New Material Co ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-04-09
Anticipated expiration: 2041-01-11
Also published as: CN112629193B

Abstract

The invention discloses a negative pressure type bamboo dryer, which comprises a drying main body, a heater and an exhaust fan, wherein the drying main body is provided with a drying chamber; the drying body comprises a preheating chamber and a drying chamber; the top ends of the preheating chamber and the drying chamber are communicated with each other through a gas pipe; the bottom end of the drying chamber is provided with an air inlet; the heater is arranged in the drying chamber above the air inlet, and the air is heated by the heater; the lower end of the preheating chamber is provided with an air outlet, and the air exhaust end of the exhaust fan is communicated with the air outlet; the preheating chamber and the drying chamber are internally provided with a containing frame for longitudinally hooping the bamboo wood to be dried; tarpaulins used for laterally coating the bamboo wood are arranged on the preheating chamber and the drying chamber on the outer side edges of the object containing frame; one side of the tarpaulin is provided with an opening and closing port for installing or detaching the containing frame, the tarpaulin is adsorbed outside the containing frame through the exhaust fan, and hot air sequentially flows through the bamboo wood in the drying chamber and the preheating chamber; the invention can effectively reduce energy loss, has high heat utilization rate and uniform drying.

Description

Negative pressure formula bamboo timber desiccator

Technical Field

The invention relates to the technical field of bamboo processing equipment, in particular to a negative pressure type bamboo dryer.

Background

At present, the bamboo industry in China keeps increasing at a high speed, the overall development situation of the industry is good, enterprise innovation, new technology and new product development are developed like bamboo shoots in spring after rain, and the enthusiasm for developing bamboo resources in various places is very high. The bamboo industry has become a pillar industry for the development of local economy and society and has become a main source of economic income for farmers in mountainous areas.

In the process of processing and utilizing bamboo, the bamboo is often woven into a bamboo curtain, and when the moisture content of the bamboo curtain is high or the bamboo curtain is dipped with glue, the bamboo curtain needs to be dried. The existing negative pressure type bamboo drying machine generally has a large gap between the bamboo to be dried and the inner wall of the drying box, when negative pressure drying is carried out, most of drying hot air does not pass through the bamboo curtains which are closely arranged, but passes through the gap between the bamboo curtains and the inner wall of the drying box, so that the outer layer of bamboo is dried too fast, and the inner layer of bamboo is not dried fully; and in order to make the bamboo timber dry more evenly, need adopt separator to separate the bamboo timber evenly, not only increased work load, still reduced the bamboo timber drying capacity of desiccator, increase manufacturing cost. Therefore, although the existing negative pressure type bamboo drying machine has a plurality of types, the problems of serious energy loss, low heat utilization rate, uneven distribution of hot air in the drying box and the like still exist.

Disclosure of Invention

The invention aims to provide a negative pressure type bamboo drying machine, which can tightly wrap bamboo in a containing frame from the side part by tarpaulin by extracting air in a preheating chamber and a drying chamber under the action of an exhaust fan so as to enable the bamboo to be positioned on a necessary path for hot air circulation, can enable the hot air to be fully contacted with the bamboo, can pre-dry the bamboo in the preheating chamber by adopting humid hot air in the drying chamber, can effectively reduce energy loss, and has large drying quantity of the bamboo, high heat utilization rate and uniform drying.

In order to achieve the purpose, the invention adopts the following technical scheme:

a negative pressure type bamboo dryer comprises a drying main body, a heater and an exhaust fan; the drying body comprises a preheating chamber and a drying chamber; the top ends of the preheating chamber and the drying chamber are communicated with each other through a gas pipe; the bottom end of the drying chamber is provided with an air inlet; the heater is arranged in the drying chamber above the air inlet, and the air is heated by the heater; the lower end of the preheating chamber is provided with an air outlet, and the air exhaust end of the exhaust fan is communicated with the air outlet; the preheating chamber and the drying chamber are internally provided with a containing frame for longitudinally hooping the bamboo wood to be dried; tarpaulins used for laterally coating the bamboo wood are arranged on the preheating chamber and the drying chamber on the outer side edges of the object containing frame; one side of the tarpaulin is provided with an opening and closing port for installing or disassembling the containing frame, the tarpaulin is adsorbed outside the containing frame through the exhaust fan, and hot air sequentially flows through the bamboo in the drying chamber and the preheating chamber.

Furthermore, the object containing frame comprises an outer frame and a supporting net; the support net is fixed at the bottom of the outer frame, and the bamboo wood arranged longitudinally is placed at the upper end of the support net.

Furthermore, one side of the outer frame is provided with a mounting opening, and at least one barrier piece is arranged on the mounting opening; the barrier comprises two sleeves and a barrier rod; the sleeve is fixedly connected with the outer frame, two ends of the blocking rod are sleeved in the sleeve, and the bamboo wood is limited to move laterally through the blocking rod.

Furthermore, supporting blocks are fixed in the preheating chamber and the drying chamber above the heater; the lower end of the outer frame is fixed with supporting legs which are placed on the supporting blocks.

Furthermore, hanging pieces are arranged on two sides of the preheating chamber and two sides of the drying chamber; the hanging piece comprises a rotating shaft and a hanging rod; the lower end of the rotating shaft is rotatably connected with the top of the preheating chamber or the drying chamber, the upper end of the rotating shaft is fixedly connected with the hanging rod, and the upper end of the tarpaulin close to the opening and closing port is fixed on the hanging rod.

Further, the heater comprises a plurality of heating rods, and the heating rods are fixed in the drying chamber above the air inlet at intervals; and a plurality of radiating fins for increasing the contact area with air are fixed on the heating rod at intervals.

Further, the negative pressure type bamboo drying machine also comprises a temperature controller and a temperature detector for detecting the temperature of hot air; the temperature detector is arranged above the heater; the temperature controller is respectively in communication connection with the heater and the temperature detector, and controls the heating power of the heater by receiving and processing temperature signals of the temperature detector.

Furthermore, an air inlet filter screen for blocking sundries is arranged on the air inlet.

Furthermore, an air outlet filter screen for blocking sundries is arranged on the air outlet.

After the technical scheme is adopted, the invention has the following beneficial effects:

1. according to the negative pressure type bamboo drying machine, under the action of the exhaust fan, the bamboo in the containing frame can be tightly wrapped by the tarpaulin from the side part by extracting the air in the preheating chamber and the drying chamber, so that the bamboo is located on the way of hot air circulation, the hot air can be fully contacted with the bamboo, the wet hot air in the drying chamber can be used for pre-drying the bamboo in the preheating chamber, the energy loss can be effectively reduced, the drying quantity of the bamboo is large, the heat utilization rate is high, the drying is uniform, and the drying effect of the bamboo arranged along the grains such as bamboo tows and bamboo curtains is particularly remarkable.

2. According to the negative pressure type bamboo drying machine, bundled bamboo materials to be dried can be placed into the outer frame through the mounting port, and the bamboo materials are limited to topple over by the blocking rods; due to the supporting effect of the supporting net, the bamboo wood can be longitudinally arranged on the supporting net, so that hot air can conveniently flow along the direction of the bamboo wood fiber, and dry hot air can more smoothly and uniformly flow through the surface of the bamboo wood; the supporting legs can ensure that a gap is reserved between the lower end of the bamboo wood and the ground or between the lower end of the bamboo wood and the preheating chamber and the drying chamber, so that water can be discharged in time, and a large amount of water accumulated at the bottom of the bamboo wood under the action of gravity can be reduced.

3. According to the negative pressure type bamboo drying machine, the upper end of the tarpaulin close to the opening and closing ports is fixed on the hanging rod, the two opening and closing ports of the tarpaulin can be overlapped to seal or open to take and place the object containing frame through rotating the rotating shaft, and the negative pressure type bamboo drying machine is convenient to use.

4. According to the negative pressure type bamboo drying machine, the plurality of radiating fins are fixed on the heating rod at intervals, the radiating fins are heated by the heating rod, the contact area of air and the heating rod can be effectively increased, and heat is quickly transferred to the air to form dry hot air.

Drawings

FIG. 1 is a schematic perspective view of a drying body of the present invention without a storage frame and a heater laid thereon;

FIG. 2 is a schematic perspective view of the drying main body of the present invention without the storage frame and the heater;

FIG. 3 is a schematic perspective view of the present invention after the storage frame is installed;

FIG. 4 is a schematic perspective view of the storage frame of the present invention;

FIG. 5 is a schematic view of the structure of a heating rod and a heat sink according to the present invention;

FIG. 6 is a schematic block diagram of the heater, temperature controller and temperature detector of the present invention.

The reference numbers in the figures denote:

1. drying the main body; 10. a preheating chamber; 100. an air outlet; 101. an air outlet filter screen; 11. a drying chamber; 110. an air inlet; 111. an air inlet filter screen; 12. a gas delivery pipe; 13. a storage frame; 130. an outer frame; 1300. an installation port; 131. a support net; 132. a dam; 1320. a sleeve; 1321. a arresting bar; 133. supporting legs; 14. tarpaulin; 140. opening and closing the ports; 15. a support block; 16. hanging and connecting pieces; 160. a rotating shaft; 161. a hanging rod; 2. a heater; 20. a heating rod; 21. a heat sink; 3. an exhaust fan; 4. a temperature controller; 5. a temperature detector.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 6, a negative pressure type bamboo dryer includes a drying main body 1, a heater 2 and an exhaust fan 3; the drying main body 1 includes a preheating chamber 10 and a drying chamber 11; the top ends of the preheating chamber 10 and the drying chamber 11 are communicated with each other through a gas pipe 12; the bottom end of the drying chamber 11 is provided with an air inlet 110; the heater 2 is arranged in the drying chamber 11 above the air inlet 110, and the air is heated by the heater 2; an air outlet 100 is formed in the lower end of the preheating chamber 10, and the air exhaust end of the exhaust fan 3 is communicated with the air outlet 100; the preheating chamber 10 and the drying chamber 11 are both internally provided with a containing frame 13 for longitudinally hooping the bamboo wood to be dried; tarpaulins 14 used for laterally coating bamboo wood are arranged on the preheating chamber 10 and the drying chamber 11 on the outer side edges of the object containing frame 13; one side of the tarpaulin 14 is provided with an opening and closing port 140 for installing or detaching the containing frame 13, the tarpaulin 14 is adsorbed outside the containing frame 13 through the exhaust fan 3, and hot air flows through the bamboo wood in the drying chamber 11 and the preheating chamber 10 in sequence.

As shown in fig. 1, 2 and 4, the object holding frame 13 includes an outer frame 130 and a support net 131; the support net 131 is fixed at the bottom of the outer frame 130, and the bamboo materials arranged longitudinally are placed at the upper end of the support net 131.

As shown in fig. 1, 2 and 4, a mounting opening 1300 is formed at one side of the outer frame 130, and at least one blocking member 132 is disposed on the mounting opening 1300; the discourager 132 includes two sleeves 1320 and a discourager bar 1321; the sleeve 1320 is fixedly connected to the outer frame 130, and two ends of the blocking rod 1321 are sleeved in the sleeve 1320 to limit the bamboo material from moving laterally through the blocking rod 1321.

As shown in fig. 1, 2 and 4, supporting blocks 15 are fixed in the preheating chamber 10 and the drying chamber 11 above the heater 2; the lower end of the outer frame 130 is fixed with a supporting leg 133, and the supporting leg 133 is placed on the supporting block 15.

As shown in fig. 1, 2 and 3, hanging pieces 16 are arranged on both sides of the preheating chamber 10 and the drying chamber 11; the hanging piece 16 comprises a rotating shaft 160 and a hanging rod 161; the lower end of the rotating shaft 160 is rotatably connected with the top of the preheating chamber 10 or the drying chamber 11, the upper end of the rotating shaft 160 is fixedly connected with a hanging rod 161, and the upper end of the tarpaulin 14 close to the opening and closing port 140 is fixed on the hanging rod 161.

As shown in fig. 1 and 5, the heater 2 includes a plurality of heating rods 20, and the heating rods 20 are fixed in the drying chamber 11 at intervals above the air inlet 110; a plurality of fins 21 for increasing a contact area with air are fixed to the heating rod 20 at intervals.

As shown in fig. 1, 2, 3 and 6, a negative pressure type bamboo dryer further includes a temperature controller 4 and a temperature detector 5 for detecting the temperature of hot air; the temperature detector 5 is arranged above the heater 2; the temperature controller 4 is respectively connected with the heater 2 and the temperature detector 5 in a communication way, and the temperature controller 4 controls the heating power of the heater 2 by receiving and processing the temperature signal of the temperature detector 5.

As shown in fig. 2 and 3, the air inlet 110 is provided with an air inlet filter screen 111 for blocking impurities.

As shown in fig. 1 and 2, an air outlet filter screen 101 for blocking impurities is disposed on the air outlet 100.

The working principle of the invention is as follows:

when the negative pressure type bamboo drying machine is used, firstly, bundled bamboo materials to be dried are longitudinally placed into the outer frame 130 through the mounting port 1300, the falling of the bamboo materials is limited by the blocking rods 1321, the bamboo materials can be placed into the containing frame 13 in a large batch and bundled mode, and the wet bamboo materials or the bamboo materials after gum dipping are conveniently placed into the preheating chamber 10 and the drying chamber 11 in a longitudinal and bundled mode; then, after the opening and closing port 140 of the tarpaulin 14 is closed, the heater 2 and the exhaust fan 3 are started, the exhaust fan 3 can sequentially extract air in the preheating chamber 10 and the drying chamber 11, so that the tarpaulin 14 is adsorbed outside the object holding frame 13 from the side edge, so that the tarpaulin 14 is tightly attached to the outer bamboo, the air entering from the air inlet 110 is heated by the heater 2 to form hot air, and dry hot air is formed under the action of the exhaust fan 3, and the dry hot air sequentially flows through the bamboo in the drying chamber 11 and the preheating chamber 10 along the bamboo fiber direction because no gap exists between the tarpaulin 14 and the outer bamboo; then, according to the temperature of the hot air detected by the temperature detector 5, the heating power of the heater 2 is controlled by the temperature controller 4 until the bamboo in the drying chamber 11 is dried, and at the moment, the hot air flowing out of the drying chamber 11 also primarily dries the bamboo in the preheating chamber 10; finally, taking out the dried bamboo wood in the drying chamber 11, putting the primarily dried bamboo wood in the preheating chamber 10 into the drying chamber 11, putting new bamboo wood to be dried into the preheating chamber 10, and repeating the drying process until all the bamboo wood is dried; therefore, the negative pressure type bamboo drying machine is used for enabling the bamboo to be located on the necessary path for hot air to circulate, enabling the hot air to be in full contact with the bamboo, pre-drying the bamboo in the preheating chamber 10 by adopting the damp and hot air in the drying chamber 11, effectively reducing energy loss, and being large in bamboo drying quantity, high in heat utilization rate, uniform in drying and especially remarkable in drying effect of the bamboo arranged along the textures such as bamboo tows and bamboo curtains.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a negative pressure formula bamboo timber desiccator which characterized in that: comprises a drying main body (1), a heater (2) and an exhaust fan (3); the drying body (1) comprises a preheating chamber (10) and a drying chamber (11); the top ends of the preheating chamber (10) and the drying chamber (11) are communicated with each other through a gas pipe (12); the bottom end of the drying chamber (11) is provided with an air inlet (110); the heater (2) is arranged in the drying chamber (11) above the air inlet (110), and the air is heated by the heater (2); an air outlet (100) is formed in the lower end of the preheating chamber (10), and the air exhaust end of the exhaust fan (3) is communicated with the air outlet (100); the preheating chamber (10) and the drying chamber (11) are internally provided with a containing frame (13) for longitudinally hooping the bamboo wood to be dried; tarpaulins (14) used for laterally coating bamboo materials are arranged on the preheating chamber (10) and the drying chamber (11) on the outer side of the object containing frame (13); an opening and closing port (140) for installing or detaching the containing frame (13) is formed in one side of the tarpaulin (14), the tarpaulin (14) is adsorbed outside the containing frame (13) through the exhaust fan (3), and hot air flows through the bamboo in the drying chamber (11) and the preheating chamber (10) in sequence.

2. The negative pressure type bamboo dryer of claim 1, characterized in that: the object containing frame (13) comprises an outer frame (130) and a supporting net (131); the supporting net (131) is fixed at the bottom of the outer frame (130), and the bamboo materials which are longitudinally arranged are placed at the upper end of the supporting net (131).

3. The negative pressure type bamboo dryer of claim 2, characterized in that: a mounting opening (1300) is formed in one side of the outer frame (130), and at least one blocking piece (132) is arranged on the mounting opening (1300); the discourager (132) includes two sleeves (1320) and a discourager bar (1321); the sleeve (1320) is fixedly connected with the outer frame (130), two ends of the blocking rod (1321) are sleeved in the sleeve (1320), and the bamboo wood is limited to move laterally through the blocking rod (1321).

4. The negative pressure type bamboo dryer of claim 3, characterized in that: supporting blocks (15) are fixed in the preheating chamber (10) and the drying chamber (11) above the heater (2); the lower end of the outer frame (130) is fixed with a supporting leg (133), and the supporting leg (133) is placed on the supporting block (15).

5. The negative pressure type bamboo dryer of claim 1, characterized in that: hanging pieces (16) are arranged on two sides of the preheating chamber (10) and the drying chamber (11); the hanging piece (16) comprises a rotating shaft (160) and a hanging rod (161); the lower end of the rotating shaft (160) is rotatably connected with the top of the preheating chamber (10) or the drying chamber (11), the upper end of the rotating shaft (160) is fixedly connected with a hanging rod (161), and the upper end of the tarpaulin (14) close to the opening and closing port (140) is fixed on the hanging rod (161).

6. The negative pressure type bamboo dryer of claim 1, characterized in that: the heater (2) comprises a plurality of heating rods (20), and the heating rods (20) are fixed in the drying chamber (11) above the air inlet (110) at intervals; a plurality of radiating fins (21) for increasing the contact area with air are fixed on the heating rod (20) at intervals.

7. The negative pressure type bamboo dryer of claim 1, characterized in that: the device also comprises a temperature controller (4) and a temperature detector (5) for detecting the temperature of the hot air; the temperature detector (5) is arranged above the heater (2); the temperature controller (4) is respectively in communication connection with the heater (2) and the temperature detector (5), and the temperature controller (4) controls the heating power of the heater (2) by receiving and processing temperature signals of the temperature detector (5).

8. The negative pressure type bamboo dryer of claim 1, characterized in that: an air inlet filter screen (111) for blocking sundries is arranged on the air inlet (110).

9. The negative pressure type bamboo dryer of claim 1, characterized in that: an air outlet filter screen (101) for blocking sundries is arranged on the air outlet (100).