CN102823925A - Vegetable dehydrator adopting double-layer chain plates - Google Patents

Abstract

The invention provides a double-layer chain plate vegetable dehydrator, which is characterized in that: the box body is horizontally divided into multiple layers by partition plates, and each layer is provided with a group of conveying devices that are driven step by step by a transmission device, and the double-layer chain plates are divided into There are two types of double-layer chain plates with multiple ventilation holes on the panel and double-layer chain plates without holes. At the same time, each double-layer chain plate is supported on the guide rail to form a trough-shaped material channel, and a material guide trough is provided under the end of each channel, and an infrared radiation device is installed above the channel in each layer of the box with a larger layer number. There is an air inlet on the upper part of the side wall at one end, and it is connected to the fan through the air induction pipe. The two ends of the side wall of the box with a smaller floor number are equipped with air inlets, and are connected to the air heater through the air supply pipe. There is an inlet on the top of the body and an outlet on the bottom. The invention has stable working performance, high reliability and good quality of dried vegetables.

Description

Double chain plate vegetable dehydrator

technical field

The invention provides a double-layer chain-plate vegetable dehydrator, in particular a device for dehydrating and drying vegetables by utilizing two heat sources of infrared radiation and hot air.

Background technique

At present, the commonly used vegetable dehydration and drying method in China is simple hot air drying. In order to ensure the drying speed, the temperature of the hot air is generally relatively high, and in addition, the drying is carried out under normal pressure. Due to oxidation, it is easy to cause a large loss of nutrients such as organic matter and Vc in the vegetables, and the color of the dried vegetables will deteriorate. The loss of nutrients is serious. , the grade is lowered. Therefore, the dried vegetables obtained by drying in a simple hot air convection mode can no longer meet people's quality requirements for dehydrated vegetables, and its market competitiveness is also getting worse.

In view of the above problems, people think that using infrared radiation heating technology to dehydrate and dry vegetables is a more advanced drying process, because infrared heating actually directly heats the inside of the material, so that the temperature gradient of heat and the humidity gradient of water molecule transfer The direction is the same, which is beneficial to heat and mass transfer in the drying process, weakens the hindering effect of temperature gradient on the movement of water molecules, shortens the drying time, reduces the loss of nutrients in vegetables, especially Vc, and greatly improves the quality of dried vegetables. Therefore, we also developed the first-generation infrared vegetable dehydrator in 2004. The test proved that this equipment has the advantages of fast drying speed, high heat transfer efficiency, low energy consumption, no pollution, good quality of dried vegetables, and easy to realize automatic control, etc. Advantages, and obtained the national invention patent, the patent number is: ZL200410023973.3; after adding the dial mechanism and the anti-falling device, it has obtained the national utility model patent, the patent numbers are: ZL200620081054.6 and ZL200620081056.5; improved air induction After the method, the national invention patent was obtained, the patent number is: ZL200610042375.X; after the combination of infrared radiation and hot air heating, the national invention patent was obtained, the patent number is: ZL200610043544.1; the hot air supplied adopts the through-flow air supply technology , obtained the national utility model patent, the patent number is: ZL200720030343.8. However, through further tests, it was found that the chain plates used in the vegetable dehydrator involved in the above-mentioned patents are all single-layer, poor in rigidity, and easily deformed. And each chain plate is to hang on the bearing pin that two conveyer chains protrude inwards by the hanging holes at both ends, so after the chain plate is bent and deformed, the chain plate will fall off from the conveyer chain due to the shortened length.

Looking at the current situation of the vegetable dehydration industry, there is an urgent need for a double-layer chain plate vegetable dehydrator with stable performance, high reliability, and good quality dried vegetables.

Contents of the invention

The object of the present invention is to provide a vegetable dehydration and drying equipment that can overcome the defects of the existing vegetable dehydration machines, has fast drying speed, reliable operation, stable performance and good quality of dried vegetables.

Its technical solution is: including the box body, transmission device, conveying device, infrared radiation device, guide rail and air heater, wherein the transmission device is installed at one end of the top of the box body, and the box body is horizontally divided into layers by partitions, from top to bottom The floor numbers of the lower floors are Ⅰ, Ⅱ, Ⅲ..., and each floor is equipped with a set of conveying devices driven step by step by the transmission device. The conveying device includes double-layer chain plates, shafts, conveying chains and conveying sprockets. , the double-layer chain plates of the upper and lower sections of the conveying device are supported on the guide rails to form a trough-shaped material channel. There is a material guide trough below the end of each channel, and there is a channel above the channel in each layer of the box with a larger layer number. Infrared radiation device, the upper part of the side wall of each layer of the box away from the transmission device is provided with an air inlet, and is connected to the fan installed on the top of the box away from the transmission through the air duct, and the boxes of each layer with a smaller number The two ends of the side wall are provided with air inlets, and are connected to the air heater through the air supply pipe. The top end of the box body away from the transmission device is provided with a feed port, and the same end is provided with a discharge port at the bottom of the box body. It is characterized in that : The double-layer chain plate includes a panel, a baffle and a backing plate. The two panels are fixedly connected by narrow strips of backing plates that are placed on the edges of the two long sides of the panels. Both ends of the two panels are fixed with belt hangers. The baffle plate of the hole, the two long sides of the baffle plate are symmetrical to the symmetrical plane of the two panels, and one end of the baffle plate is provided with a circular arc with a radius equal to half the width of the baffle plate and tangent to one side of a backing plate. The center of the hanging hole is concentric with the center of the arc, and the other end of the baffle is processed with a circular arc centered on the center of the hanging hole. The edges of the two panels are provided with grooves corresponding to the hanging holes of the baffle. There are two types of panels with multiple ventilation holes and panels without holes.

The above-mentioned double-layer chain plate vegetable dehydrator is equipped with conveying devices in each layer of the box with air inlets, and the double-layer chain plate with ventilation holes on the multi-piece panels is hung on the pin shaft of the conveying chain through the hanging holes. , The panel is supported on the guide rail to form a groove-shaped material channel.

The described double-layer chain plate vegetable dehydrator is equipped with a conveying device in each layer of the box of the infrared radiation device, and the double-layer chain plate without holes on the multi-piece panel is hung on the pin shaft of the conveying chain through the hanging hole. The panels are supported on the guide rails to form a trough-shaped material channel.

In the described double-layer chain plate vegetable dehydrator, an insulating layer is provided on the box body.

On the technical basis of patent numbers ZL200410023973.3, ZL200610042375.X, ZL200610043544.1, ZL200620081054.6, ZL200620081056.5 and ZL200720030343.8, the present invention adopts a double-layer chain plate drying technical solution, that is, the top of the box body There is a transmission device, the other end is provided with a material inlet and a fan, and the bottom of the box at the same end as the material inlet is provided with a material outlet. The inner space of the box is horizontally divided into multiple layers by partitions, and the layer numbers of each layer from top to bottom are Ⅰ, Ⅱ, Ⅲ..., and each layer is equipped with a set of conveying devices that are driven step by step by the transmission device; The double-layer chain plate is divided into two types: the double-layer chain plate with multiple ventilation holes on the panel and the double-layer chain plate without holes. The backing plates are fixedly connected together. Both ends of the two panels are fixed with baffles with hanging holes. The two long sides of the baffle are symmetrical to the symmetrical plane of the two panels. One end of the baffle has a radius equal to the Half the width of a circular arc tangent to one side of a backing plate, the center of the hanging hole is located in the center of the arc, the other end of the baffle is processed with a circular arc centered on the center of the hanging hole, the two ends of the two panels There are grooves on the edges corresponding to the hanging holes of the baffles; the upper and lower sections of the conveying device in each box with a smaller floor number adopt double-layer chain plates with multiple ventilation holes on the panel, and through the hanging The hole is hung on the pin shaft of the conveying chain, and the panel is supported on the guide rail to form a groove-shaped material channel. Both ends of the side wall of the box are equipped with air inlets, which are connected to the air heater through the air supply pipe; The conveying device in each layer of the large box adopts a non-porous double-layer chain plate for the upper and lower sections, and is hung on the pin shaft of the conveying chain through the hanging hole, and the panel is supported on the guide rail to form a trough-shaped material channel. Infrared radiation devices are installed above each channel; material guide grooves are provided below the ends of the two trough-shaped material channels; air inlets are provided on the upper part of the side wall of each layer of the box away from the transmission device, and through the air induction pipe and Fan connection mounted on the top of the box at the end away from the drive.

Its working principle is: after being heated by the air heater, the hot air with low moisture content and adjustable temperature enters the box body of each layer with a smaller layer number through the air inlet through the air supply pipe, and then flows from both ends. At the same time, it is supplied to the air supply chamber below the trough-shaped material channel formed by double-layer chain plates with multiple ventilation holes, and then passes through the ventilation holes of the double-layer chain plates and enters the material layer upwards. When the vegetables are added into the box from the feed port, they first enter the trough-shaped material passage formed by double-layer chain plates with multiple ventilation holes for hot air dehydration and drying. After the hot air passes through the material layer, the temperature is lowered because the heat is transferred to the vegetables, and the moisture content in the vegetables is taken away to increase the moisture content, which becomes waste gas, which is discharged by the fan through the air inlet and through the air induction pipe. Outside the box. On the other hand, when the vegetables are transported to the guide trough together with the double-layer chain plate, because the guide rail terminates in front of the guide trough, the double-layer chain plate suddenly loses its support and turns over, and the vegetables then fall to the lower trough along the guide trough. Drying continues in the material channel. After being dehydrated and dried by hot air, the vegetables whose water content has been reduced to a certain level enter the trough-shaped material channel composed of non-porous double-layer chain plates equipped with infrared radiation devices, and continue to be dehydrated and dried under the action of infrared radiation. When the moisture content reaches the requirement, it will flow out from the outlet.

Compared with the prior art, the present invention greatly improves its rigidity due to the double-layer chain plate structure, completely solves the problem of shedding caused by the bending deformation and shortening of the chain plate, and ensures the normal operation of the equipment and the quality of dried vegetables .

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of the present invention.

Fig. 2 is a first partial enlarged sectional view of the embodiment shown in Fig. 1 .

Fig. 3 is an axonometric view of a double-layer chain plate provided with ventilation holes in the panel of the embodiment shown in Fig. 1 .

Fig. 4 is a front view of a double-layer chain plate provided with ventilation holes in the panel of the embodiment shown in Fig. 1 .

Fig. 5 is an A-A cross-sectional view of a double-layer chain plate provided with ventilation holes in the panel of the embodiment shown in Fig. 4 .

Fig. 6 is an axonometric view of a double-layer chain plate without holes in the panel of the embodiment shown in Fig. 1 .

Fig. 7 is a front view of a double-layer chain plate without holes in the panel of the embodiment shown in Fig. 1 .

Fig. 8 is a B-B cross-sectional view of the double-layer chain plate without holes in the panel of the embodiment shown in Fig. 7 .

Detailed ways

1. Cabinet 2. Transmission device 3. Infrared radiation device 4. Guide rail 5. Air heater 6. Partition plate 7. Shaft 8. Conveyor chain 9. Conveyor sprocket 10. Material guide trough 11. Air duct 12. Fan 13. Air supply pipe 14, material inlet 15, material outlet 16, panel 17, baffle plate 18, backing plate 19, hanging hole 20, ventilation hole 21, insulation layer.

In the embodiment shown in Figures 1 to 8: the transmission device 2 of the double-layer chain plate vegetable dehydrator is installed at one end of the top of the box body 1, the other end is provided with a feed port 14, and the same end is provided at the bottom of the box body 1. There is a discharge port 15; the box body 1 is horizontally divided into four layers by partitions 6, and the layer numbers of each layer from top to bottom are Ⅰ, Ⅱ, Ⅲ, Ⅳ, and each layer is equipped with a set of transmission devices 2 The conveying device is driven step by step; the upper and lower double-layer chain plates of the conveying device are hung on the pin shaft of the conveying chain 8 through the hanging hole 19, and the panel 16 is supported on the guide rail 4 to form a trough-shaped material channel. A material guide groove 10 is provided below each channel end. The double-layer chain plate is divided into two types: the double-layer chain plate with a plurality of ventilation holes 20 with a diameter of φ2.5mm on the panel 16 and the double-layer chain plate without holes. The narrow strip backing plates 18 that are padded at the edges are fixedly connected together, and the two ends of the two panels 16 are fixed with baffles 17 with hanging holes 19, and the two long sides of the baffles 17 are opposite to the two panels 16. The plane of symmetry of the baffle plate 17 is provided with a radius equal to half of the width of the baffle plate 17 and is tangent to one side of a backing plate 18. The center of the hanging hole 19 is located at the center of the arc. The other end is processed with a circular arc with the center of the hanging hole 19 as the center of the circle, and the edges of the two panels 16 are provided with grooves corresponding to the hanging holes 19 of the baffle plate. The conveying device in the first layer of the box body 1, the upper and lower sections use a double-layer chain plate with a diameter of φ2.5mm ventilation holes on the panel 16 to form a groove-shaped material channel, and both ends of the side wall of the box body 1 are equipped with The air inlet is connected to the air heater 5 through the air supply pipe 13; the box body 1 of the Ⅱ~Ⅳ layer is equipped with an infrared radiation device 3 above the groove-shaped material channel formed by double-layer chain plates without holes; each layer The upper part of the side wall of the box body 1 away from the transmission device 2 is provided with an air inlet, and is connected to the fan 12 installed on the top of the box body 1 at the end far away from the transmission device 2 through the air induction pipe 11; the box body 1 is provided with an insulation layer 21 .

Claims (4)

1. double-deck carrier bar vegetable dehydrator; Comprise casing (1), transmission device (2), transport, infrared radiation device (3), guide rail (4) and air heater (5); Wherein transmission device (2) is installed in an end at casing (1) top; Casing (1) inner route clapboard (6) is horizontally partitioned into multilayer; The level number of each layer is followed successively by I, II, III from top to bottom ... One group of transport that is driven running by transmission device (2) step by step all is set in every layer; Transport comprises double-deck carrier bar, axle (7), chain (8) and transportation sprocket (9), and the equal support of double-deck carrier bar of transport two sections goes up and formation flute profile material channel at guide rail (4), and the below of each channel end is provided with deflector chute (10); The interior passage top of each layer box body (1) that level number is bigger is equipped with infrared radiation device (3); Every layer box body (1) is provided with air-vent away from the side wall upper part of transmission device (2) one ends, and through induced duct (11) be installed in the blower fan (12) of casing (1) top and be connected away from transmission device (2) one ends, the sidewall two ends of each layer box body (1) that level number is less are provided with air inlet; And be connected with air heater (5) through air feed pipe (13); Casing (1) top is provided with charging aperture (14) away from an end of transmission device (2), and same end is provided with discharging opening (15) in the bottom of casing (1), it is characterized in that: double-deck carrier bar comprises panel (16), baffle plate (17) and backing plate (18); Be fixedly connected through being positioned at the narrow strip backing plate (18) that the long limit of (16) two of panels edge is lined with between two panels (16); Two panels (16) two ends all are fixed with band and hang the baffle plate (17) of hole (19), and two long limits of baffle plate (17) are with respect to the plane of symmetry symmetry of two panels (16), baffle plate (17) one ends be provided with radius equal baffle plate (17) width half the and with the tangent circular arc in a side of a backing plate (18); It is concentric with this center of arc to hang center, hole (19); It is the circular arc in the center of circle that the other end of baffle plate (17) is processed with to hang center, hole (19), and two panels (16) edges at two ends is hung hole (19) corresponding to baffle plate and located to be equipped with groove, and panel (16) is divided into (16) two kinds of the panel (16) that is provided with a plurality of air vents (20) and atresia panels.

2. double-deck carrier bar vegetable dehydrator as claimed in claim 1; It is characterized in that: be provided with the transport in each layer box body (1) of air inlet, multi-disc panel (16) is provided with the double-deck carrier bar of air vent (20), and hole (19) is hung on the bearing pin of chain (8) through hanging, panel (16) support goes up at guide rail (4) and constitutes the flute profile material channel.

3. double-deck carrier bar vegetable dehydrator as claimed in claim 1; It is characterized in that: be provided with the interior transport of each layer box body (1) of infrared radiation device (3), on the bearing pin of chain (8) by hole (19) through hanging for the double-deck carrier bar of the last atresia of multi-disc panel (16), panel (16) support goes up at guide rail (4) and constitutes the flute profile material channel.

4. double-deck carrier bar vegetable dehydrator as claimed in claim 1 is characterized in that: casing (1) is provided with heat-insulation layer (21).

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