CN210512338U - Vertical vacuum drying machine - Google Patents

Abstract

The utility model provides a vertical vacuum drying machine belongs to bamboo timber processing equipment technical field. It has solved prior art design and has easily leaded to local high temperature scheduling problem. The vertical vacuum dryer comprises a drying chamber which is communicated from front to back and used for moving a loading rack in, a lower air duct is dug at the bottom of the drying chamber and communicated with a hot air outlet end of an air heater arranged outside the drying chamber, and the relative upper part of the drying chamber is communicated with an inlet end of an exhaust fan used for exhausting air in the drying chamber through a first exhaust pipe. This vertical vacuum drying-machine's advantage lies in: the drying chamber is vacuumized through the exhaust fan, so that the drying chamber is in a negative pressure state, the introduction of air heated by the outside is facilitated, the heated hot air is introduced from the lower air duct and flows upwards, and then the hot air is discharged from the upper part of the drying chamber, so that the hot air flows through all parts of the material carrying frame in the flowing direction, the flowing dead angle is reduced, and the uniform drying of the bamboo filament bundles soaked in glue on the material carrying frame is facilitated.

Description

Vertical vacuum drying machine

Technical Field

The utility model belongs to the technical field of the bamboo timber processing equipment, especially, relate to a vertical vacuum drying machine.

Background

In the bamboo carbonization process, after desugaring and carbonizing, bamboo filament bundles need to be naturally drained, then are bundled and placed into a gum dipping pool, and then the gum dipped bamboo filament bundles are dried. In addition, the weight of the material carrying frame and the mass of the bamboo loaded on the material carrying frame are usually at least more than hundreds of jin, and the tonnage can be calculated in most cases.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, provide a reasonable in design, solved the vertical vacuum drying-machine of the mobile problem of drying equipment intrinsic qi flow.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the utility model discloses a vertical vacuum drying machine, the drying chamber that is used for supplying to carry the work or material rest to move into that link up around including, its characterized in that: the bottom of the drying chamber is dug to be provided with a lower air duct which is communicated with a hot air outlet end of an air heater arranged outside the drying chamber, the relative upper part of the drying chamber is communicated with an inlet end of an exhaust fan used for exhausting air in the drying chamber through a first exhaust pipe, a second exhaust pipe is communicated with an outlet end of the exhaust fan, and a return pipe for returning exhausted hot air into the air heater is arranged between the second exhaust pipe and the inlet end of the air heater. The drying chamber is vacuumized through the exhaust fan, so that the drying chamber is in a negative pressure state, the introduction of air heated by the outside is facilitated, the heated hot air is introduced from the lower air duct and flows upwards, and then the hot air is discharged from the upper part of the drying chamber, so that the hot air flows through all parts of the material carrying frame in the flowing direction, the flowing dead angle is reduced, and the uniform drying of the bamboo filament bundles soaked in glue on the material carrying frame is facilitated.

Preferably, the air heater is arranged in a vertically through installation box body, a box door used for opening or closing the inlet end is arranged at the inlet end part of the installation box body, a box door rotating shaft which is driven by a box door driving motor to rotate is arranged on the box door, and the outlet end of the installation box body is communicated with the lower air duct. This chamber door is opened always when initial operation, after this drying-machine operation a period, the moisture that is located in the bamboo filament bundle after the gum dipping in the drying chamber reduces to certain degree, can close this chamber door through chamber door driving motor, then let the exhaust hot-blast in the second air exhaust pipe flow in air heater's entrance point again through the back flow and carry out the secondary heating after, reentrant drying chamber, can improve the heat utilization ratio like this, of course this moment, also can adjust air heater's power according to the condition, with the energy consumption that reduces to use air heater to consume.

Preferably, the dryer further comprises a circuit control board and a temperature detection piece arranged on the second exhaust pipe, wherein the circuit control board is electrically connected with the temperature detection piece and the door driving motor respectively. The temperature detection piece is arranged on the air outlet, and the temperature detection piece is arranged on the air outlet.

Preferably, a pair of roller way components which are correspondingly arranged and used for bearing and conveying the material loading frame are arranged on two sides of the bottom in the drying chamber, which extend along the longitudinal direction. The material loading frame is favorable for conveying, and single pushing-in and pulling-out operation can be realized without mechanical equipment.

Preferably, every roller way component includes a pair of support rails that are parallel to each other and set up along carrying the work or material rest traffic direction, has set firmly a plurality of roller shafts that are the interval and evenly set up along the drying chamber longitudinal direction between this pair of support rails, is equipped with rotatable roller on every roller shaft, and the interval of three adjacent rollers should be not more than the length that carries the work or material rest along business turn over drying chamber direction.

Preferably, both ends of the support rail protrude from the inlet end and the outlet end of the drying chamber, respectively.

Preferably, the support rails extend beyond the inlet and outlet ends of the drying chamber by at least the length of one carrier in the direction of travel thereof. The feeding and the discharging are facilitated, the production continuity is improved, and the production efficiency is improved.

Preferably, a plurality of horizontally arranged limiting rollers are arranged on the supporting rail relatively close to the side wall arranged on the drying chamber along the longitudinal direction at intervals. The arrangement of the limiting idler wheels prevents the material carrying frame from deviating during conveying, and when the limiting idler wheels are in contact with the material carrying frame, the rotating limiting idler wheels play a boosting role on the material carrying frame.

Preferably, a pulling assembly for pulling the material loading frame is arranged at the middle of the pair of roller way assemblies on the bottom of the drying chamber, the pulling assembly comprises an annular transmission chain arranged at the middle of the roller way assemblies, the length of the annular transmission chain is basically the same as that of the supporting rail, two ends of the annular transmission chain are respectively connected with a first transmission chain wheel and a second transmission chain wheel, and the first transmission chain wheel is connected with a chain wheel driving motor through a chain wheel shaft fixedly arranged on the first transmission chain wheel.

Preferably, the air heater is a heat exchanger in which the heat source is hot saturated steam. The bamboo dust collected in the bamboo processing is used as the biomass fuel to be used as the fuel of the boiler, the hot saturated steam obtained by heating the boiler enters the heat exchanger through the related pipeline and exchanges heat with the air sucked from the outside or the air flowing in from the return pipe, and the effects of energy conservation and environmental protection are achieved.

Compared with the prior art, the vertical vacuum dryer has the advantages that: the drying chamber is vacuumized through the exhaust fan, so that the drying chamber is in a negative pressure state, the introduction of air heated by the outside is facilitated, the heated hot air is introduced from the lower air duct and flows upwards, and then the hot air is discharged from the relative upper part of the drying chamber, so that the flowing direction of the hot air passes through all parts of the material carrying frame, the flowing dead angle is reduced, and the uniform drying of bamboo filament bundles soaked in glue on the material carrying frame is facilitated; the arrangement of the roller way assembly enables the material carrying rack to be supported and conveyed by more rollers than wheels on the cart when the material carrying rack moves, only one person is needed to easily push the material carrying rack into the kiln body, the cart is not needed, and the material carrying rack does not need to be pushed by multiple persons like the cart or be assisted by related pushing machinery, and compared with the traditional chain type drying, only one third of labor is needed, so that the material carrying rack is very labor-saving and convenient to enter a drying chamber or move out of the drying chamber; the setting of the ejection of compact of drying chamber one end feeding one end makes the production continuity improve to make this single unit equipment productivity improve.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 provides a schematic structural view observed from an inlet end of a drying chamber according to an embodiment of the present invention.

Fig. 2 provides a schematic structural diagram of the inside of the installation box in the embodiment of the present invention.

Fig. 3 provides a schematic structural view of the carrier frame.

Fig. 4 provides a schematic view of a cart for transporting the carriers.

In the figure, a material loading rack a, a drying chamber 101, an air heater 102, a first exhaust duct 103, a second exhaust duct 104, an exhaust fan 105, a return duct 106, a mounting box 107, a box door 108, a box door driving motor 109, a box door rotating shaft 110, a supporting rail 1111, a roller shaft 1112, a roller 1113, a limiting roller 1114, a transmission chain 1121, a first transmission chain wheel 1122, a chain wheel shaft 1124 and a chain wheel driving motor 1125.

Detailed Description

As shown in fig. 1 to 4, the embodiment of the vertical vacuum dryer includes, but is not limited to, the following examples.

Example 1

This vertical vacuum drying-machine, including the drying chamber 101 that is used for supplying to carry the immigration of magazine a that link up around, its characterized in that: the bottom of the drying chamber 101 is dug to be provided with a lower air duct, the lower air duct is communicated with a hot air outlet end of an air heater 102 arranged outside the drying chamber 101, the opposite upper part of the drying chamber 101 is communicated with an inlet end of an exhaust fan 105 used for exhausting air in the drying chamber 101 through a first exhaust pipe 103, a second exhaust pipe 104 is communicated with an outlet end of the exhaust fan 105, and a return pipe 106 used for returning exhausted hot air to the air heater 102 is arranged between the second exhaust pipe 104 and the inlet end of the air heater 102. The drying chamber 101 is vacuumized by the exhaust fan 105, so that the inside of the drying chamber 101 is in a negative pressure state, external heated air is guided in, heated hot air flows upwards from the lower air duct and is discharged from the upper part of the drying chamber 101, and therefore the hot air flows through all parts of the material carrying frame a, flowing dead angles are reduced, and uniform drying of the bamboo filament bundles soaked in glue on the material carrying frame a is facilitated.

Alternatively, the air heater 102 is disposed in a vertically penetrating installation cabinet 107, a door 108 for opening or closing the inlet end is disposed at an inlet end of the installation cabinet 107, a door rotation shaft 110 for driving the door 108 to rotate by a door driving motor 109 is disposed on the door 108, and an outlet end of the installation cabinet 107 is communicated with the lower air duct. The door 108 is always opened during the initial operation, after the dryer operates for a period of time, generally within 1 hour, after the moisture in the bamboo filament bundle after gum dipping in the drying chamber 101 is reduced to a certain degree, the door 108 can be closed by the door driving motor 109, and then the hot air exhausted from the second exhaust duct 104 flows into the inlet end of the air heater 102 again through the return duct 106 to be heated for the second time, and then enters the drying chamber 101 again, so that the heat utilization rate can be improved, at this time, the power of the air heater 102 can be adjusted according to the situation, so as to reduce the energy consumption consumed by using the air heater 102, and even the hot air flowing in the return duct 106 can directly enter the drying chamber 101 again through the lower air duct without starting the air heater 102.

Alternatively, the dryer further comprises a circuit control board and a temperature detection piece arranged on the second exhaust duct 104, wherein the circuit control board is electrically connected with the temperature detection piece and the door driving motor 109 respectively. It is possible for the circuit control board to automatically control the opening and closing of the door 108 according to the detected temperature of the exhaust outlet by the temperature detecting member.

Specifically, the air heater 102 is a heat exchanger whose heat source is hot saturated steam. The bamboo dust collected in the bamboo processing is used as the biomass fuel to be used as the fuel of the boiler, the hot saturated steam obtained by heating the boiler enters the heat exchanger through the related pipeline and exchanges heat with the air sucked from the outside or the air flowing in from the return pipe 106, and the effects of energy conservation and environmental protection are achieved.

Example 2

This embodiment is substantially the same as embodiment 1 except that: the two sides of the bottom of the drying chamber 101 extending along the longitudinal direction are provided with a pair of roller way assemblies which are correspondingly arranged and used for bearing and conveying the material loading frame a. The conveying of the material loading frame a is facilitated, and the pushing-in and pulling-out operation of a single person can be realized without mechanical equipment.

Specifically, every roller way subassembly includes a pair of support rail 1111 that is parallel to each other and sets up along carrying a work direction of work or material rest a, and this pair of support rail 1111 sets firmly a plurality of roller 1112 that are the even setting of interval along drying chamber 101 longitudinal direction between, is equipped with rotatable roller 1113 on every roller 1112, and the interval of three adjacent rollers 1113 should be not more than carrying a work or material rest a along the length of business turn over drying chamber 101 direction.

Preferably, both ends of the support rail 1111 extend out of the inlet end and the outlet end of the drying chamber 101, respectively, and further, the length of the support rail 1111 extending out of the inlet end and the outlet end of the drying chamber 101 is at least the length of one carrier a in the traveling direction thereof. The feeding and the discharging are facilitated, the production continuity is improved, and the production efficiency is improved.

Alternatively, a plurality of horizontally arranged limiting rollers 1114 are arranged on the supporting rail 1111, which is relatively close to the side wall of the drying chamber 101 and arranged along the longitudinal direction, at intervals. The setting of spacing gyro wheel 1114 prevents to carry work or material rest a to take place the off tracking in carrying, and when spacing gyro wheel 1114 contacted with carrying work or material rest a in addition, pivoted spacing gyro wheel 1114 had played the effect of boosting to carrying work or material rest a.

Alternatively, a pulling assembly for pulling the material loading frame a is arranged at the middle of the pair of roller way assemblies on the bottom of the drying chamber 101, the pulling assembly comprises an annular transmission chain 1121 arranged at the middle of the roller way assemblies, the length of the annular transmission chain 1121 is substantially the same as that of the support rail 1111, two ends of the annular transmission chain 1121 are respectively connected with a first transmission chain wheel 1122 and a second transmission chain wheel, and the first transmission chain wheel 1122 is connected with the chain wheel driving motor 1125 through a chain wheel shaft 1124 fixedly arranged on the first transmission chain wheel 1122.

The working principle is as follows: when the soaked bamboo filament loading frame a is loaded, the exhaust fan 105 and the air heater 102 are started after the bamboo filament loading frame a passes through the drying chamber 101, the exhaust fan 105 guides the outside air absorbed from the inlet end of the mounting box 107 into the air heater 102, then the outside air enters the bottom of the drying chamber 101 through the lower air duct, then the outside air flows out from the upper part of the drying chamber 101, preferably the top of the drying chamber, and finally the outside air is exhausted through the second exhaust pipe 104, preferably the second exhaust pipe 104 is not directly exhausted, but is uniformly exhausted into a main air pipe firstly and then is exhausted to a required place through the main air pipe, after the operation is performed for a period of time, the moisture content of the bamboo filament in the drying chamber 101 is reduced, the air humidity is also reduced, at the moment, the opening and closing degrees of the box door 108 are adjusted as required, and simultaneously the hot air extracted from the second exhaust pipe 104 flows into the inlet end of the air heater 102 again through the return pipe 106, the air heater 102 can also adjust the working power thereof as required, and then the air heater flows back into the drying chamber 101 again to improve the heat recycling rate, in addition, a corresponding side of the loading rack a is respectively arranged on a roller way assembly, thereby facilitating the moving in and out of the loading rack a, and in addition, the loading rack a is contacted by an annular transmission chain 1121 positioned at the bottom thereof, namely, the effect of boosting the loading rack a is realized by the friction force of the two.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms of the carrier frame a, the drying chamber 101, the air heater 102, the first exhaust duct 103, the second exhaust duct 104, the exhaust fan 105, the return duct 106, the installation cabinet 107, the door 108, the door driving motor 109, the door rotating shaft 110, the support rail 1111, the roller shaft 1112, the roller 1113, the limit roller 1114, the driving chain 1121, the first driving sprocket 1122, the sprocket shaft 1124, the sprocket driving motor 1125, etc. are used more, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. A vertical vacuum dryer comprises a drying chamber (101) which is communicated from front to back and used for moving a loading rack (a), and is characterized in that: the bottom of drying chamber (101) dig and be equipped with down the wind channel, lower wind channel and the hot-blast exit end intercommunication of locating air heater (102) outside drying chamber (101), the relative upper portion of drying chamber (101) through first exhaust pipe (103) and be used for the entrance point intercommunication with exhaust fan (105) of the interior wind exhaust of drying chamber (101), second exhaust pipe (104) and exhaust fan (105) exit end intercommunication, second exhaust pipe (104) and air heater (102) the entrance point between be equipped with and supply the back flow (106) of exhaust hot-blast back again in air heater (102).

2. The vertical vacuum dryer according to claim 1, wherein the air heater (102) is disposed in a vertically through installation box (107), a box door (108) for opening or closing the inlet end is disposed at an inlet end of the installation box (107), a box door rotating shaft (110) for driving the box door (108) to rotate by a box door driving motor (109) is disposed on the box door (108), and an outlet end of the installation box (107) is communicated with the lower air duct.

3. The vertical vacuum dryer according to claim 2, further comprising a circuit control board and a temperature detecting member disposed on the second exhaust duct (104), wherein the circuit control board is electrically connected to the temperature detecting member and the door driving motor (109), respectively.

4. The vertical vacuum dryer according to any one of claims 1 to 3, wherein a pair of roller way assemblies for carrying and conveying the material loading frame (a) are correspondingly arranged at two sides of the bottom of the drying chamber (101) extending along the longitudinal direction.

5. The vertical vacuum dryer according to claim 4, wherein the roller assembly comprises a pair of supporting rails (1111) parallel to each other and arranged along the direction of the loading frame (a), a plurality of roller shafts (1112) uniformly arranged at intervals are fixedly arranged between the pair of supporting rails (1111) along the longitudinal direction of the drying chamber (101), each roller shaft (1112) is provided with a rotatable roller (1113), and the distance between the adjacent three rollers (1113) is not more than the length of the loading frame (a) along the direction of entering and exiting the drying chamber (101).

6. The vertical vacuum dryer according to claim 5, wherein both ends of the support rail (1111) are protruded from an inlet end and an outlet end of the drying chamber (101), respectively.

7. The vertical vacuum dryer according to claim 6, wherein the supporting rails (1111) extend at least a length of one carrier (a) in the traveling direction thereof from both the inlet end and the outlet end of the drying chamber (101).

8. The vertical vacuum dryer according to claim 5, wherein a plurality of horizontally disposed limiting rollers (1114) are provided at intervals on the supporting rail (1111) relatively adjacent to the sidewall of the drying chamber (101) disposed in the longitudinal direction.

9. The vertical vacuum dryer as claimed in claim 5, wherein a pulling assembly for pulling the material loading frame (a) is disposed at a position located at the middle of the pair of roller assembly on the bottom of the drying chamber (101), the pulling assembly comprises an endless driving chain (1121) disposed at the middle of the roller assembly, the length of the endless driving chain (1121) is substantially the same as that of the supporting rail (1111), the two ends of the endless driving chain (1121) are respectively connected to a first driving sprocket (1122) and a second driving sprocket, and the first driving sprocket (1122) is connected to the sprocket driving motor (1125) through a sprocket shaft (1124) fixed thereto.

10. The vertical vacuum dryer as claimed in claim 1, wherein the air heater (102) is a heat exchanger in which a heat source is hot saturated steam.

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