CN213700638U

CN213700638U - U-shaped lamp tube dryer

Info

Publication number: CN213700638U
Application number: CN202021457656.3U
Authority: CN
Inventors: 刘珍菊; 王永福; 叶绍云
Original assignee: Zhejiang Jiangshan Sunny Electron Co ltd
Current assignee: Zhejiang Jiangshan Sunny Electron Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-07-16
Anticipated expiration: 2030-07-22

Abstract

The utility model belongs to the technical field of energy-saving lamp tube production equipment, and discloses a dryer suitable for drying after powder coating of a U-shaped lamp tube, which comprises an annular conveyor belt, a series of hook groups arranged on the conveyor belt, and a drying cabinet covered with a conveyor belt main body; a hot air pipeline and a powder liquid recovery mechanism are arranged in the drying machine case. In the preferred scheme, each hook can be used for hanging a pair of lamp tubes to form double-row transmission, and an upper tube auxiliary device specially suitable for the scheme is designed. The utility model discloses the integrated level degree is high, can automize, accomplish the stoving process of fluorescent tube in large batch to can realize that phosphor powder retrieves, energy-concerving and environment-protective.

Description

U-shaped lamp tube dryer

Technical Field

The utility model belongs to the technical field of energy-saving lamp tube production facility, in particular to a drying-machine for processing of U-shaped fluorescent tube.

Background

In the production process of the fluorescent energy-saving lamp tube, the inner wall of the lamp tube needs to be coated with fluorescent powder liquid, which is called coating powder for short. The procedure after the powder coating is drying, so that the fluorescent liquid is dried, solidified and attached to the inner wall of the lamp tube. In the drying process, many technical details such as powder and liquid recovery, hot air circulation and temperature control, conveying mechanism and the like are involved. For energy-saving lamp tubes with different shapes, the specific scheme of the drying equipment has great difference. At present, the prior art discloses little disclosure on how to stably, efficiently and energy-efficiently carry out a drying process for the large-scale automatic flow line production of U-shaped energy-saving lamp tubes.

Disclosure of Invention

The utility model aims at providing a drying-machine for U-shaped fluorescent tube processing production contains the complete set solution that the fluorescent tube put on the shelf, conveys, dries, powder liquid is retrieved to improve through the detail and promote drying efficiency.

The technical scheme of the utility model is that: a U-shaped lamp tube dryer comprises an annular conveyor belt, a series of hook groups arranged on the conveyor belt, and a dryer case covering a conveyor belt main body; a hot air pipeline and a powder liquid recovery mechanism are arranged in the drying machine case.

The conveying belt comprises a driving chain wheel and a driven chain wheel which are arranged on the rack and a chain matched with the chain wheels. The couple group includes a fixed plate and three couple, and the parallel equidistance of couple is installed on the fixed plate, and the fixed plate is installed on the conveying chain.

The hot air pipeline is a pipeline which is arranged in the case, arranged along the direction of the conveyor belt and positioned right below the hook; the upper surface of the pipeline is provided with a plurality of air flow nozzles at equal intervals.

The powder and liquid recovery mechanism is a plurality of square recovery hoppers arranged at the bottom of the case and is arranged at the inlet side close to the lamp tube conveyor belt in series, and a recovery pool is arranged below the lamp tube conveyor belt. The powder and liquid recovery mechanism can collect residual fluorescent powder and liquid dripped by the inverted lamp tube.

Preferably, the hook comprises a front groove and a rear groove individually, and a pair of light tubes can be hung on the hook. Thus, one conveyor belt can convey two rows of lamps at the same time. In this preferred embodiment, the air flow nozzle on the hot air duct is made into a double-opening Y shape. The Y-shaped air flow nozzles are arranged at equal intervals, the planes of the Y-shaped air flow nozzles are axially vertical to the hot air pipeline, the distance between the Y-shaped air flow nozzles and the hook is equal to or twice the distance between the Y-shaped air flow nozzles and the hook, and the axial positions of the Y-shaped air flow nozzles on the hot air pipeline are aligned with one pipe orifice of the lamp tube hung when the conveyor belt stays. The lower part of the Y-shaped nozzle is communicated with the hot air pipeline, the upper part of the Y-shaped nozzle is branched into two airflow jet holes, and the jet holes face to pipe orifices below the two rows of lamp tubes which are respectively aligned and hung. Therefore, when the lamp tube moves intermittently in the oven along with the conveyor belt, the hot air is conveyed into the lamp tube to the maximum extent by the two spray holes on the Y-shaped nozzle during each stay period and flows out of the other tube opening, and the water vapor on the inner wall of the lamp tube is efficiently carried away. The Y-shaped nozzles are characterized in that the two spray holes are branched from the same thin tube, the shapes are symmetrical, the thickness and the length are the same, therefore, hot air flow of a main pipeline can be uniformly blown out from the two spray holes of each Y-shaped nozzle, the temperature and the flow speed of the air flow are the same, and the high synchronization of the drying progress of the two rows of lamp tubes is ensured.

In addition, under the above preferred scheme, in order to realize that the lamp tube is hung on the double-groove hook as required under the premise of not changing the lamp tube transfer device of the previous process, an upper tube auxiliary device is designed, and is arranged at the entrance of the case by the conveyor belt. The upper pipe auxiliary device comprises a rotating shaft arranged on the rack, and three baffles are fixed on the rotating shaft in parallel at equal intervals; the baffle interval is the twice of above-mentioned couple interval, and the baffle is aimed at the couple setting, and the centre bifurcation can not collide with the couple, pivot one end and rocker are fixed, and the rocker links to each other with power unit to drive pivot and baffle and lift up the state at the level and to the vertical swing back and forth between the state downwards. The upper tube auxiliary device can push the lamp tube hung in the front groove of the hook to the rear groove by pushing of the baffle.

Preferably, for the powder and liquid recovery mechanism, the number of the recovery hoppers is three with reference to the duration of the residual powder and liquid dropping of the lamp tube; the recovery hopper is in a rectangular funnel shape, namely a pentahedron with a bottom surface (no solid body on the bottom surface) on; one pair of the four inclined planes is longer and shorter and has the same width with the oven conveying channel, the longer two inclined planes are intersected at the bottom to form a leaking belt parallel to the conveying direction, and the two ends of the leaking belt are intersected with the shorter two inclined planes; the inclination angles of the four inclined surfaces and the horizontal plane are equal and are between 40 and 45 degrees. The residual fluorescent powder liquid dripped from the lamp tube entering the oven in the previous period is almost completely received by the three recycling hoppers, flows downwards to the seam leaking belt along with the gravity and is finally collected in a recycling tank below.

Preferably, in order to improve the sealing performance in the drying machine case and reduce heat loss to the outside, hanging type door curtains are arranged on the case at the conveying inlet and the conveying outlet. The opening space at the inlet and the outlet of the oven is reduced as much as possible on the premise of not obstructing the movement of the conveyor belt and the hook group.

The utility model has the advantages that: the dryer adopting the technical scheme has high integration level, can complete the drying process in the tube after the powder is coated on the lamp tube in a highly automatic way, and can realize the recovery of fluorescent powder; the closed drying cabinet ensures high heat utilization rate, energy conservation and environmental protection; the optimized scheme can simultaneously convey two rows of lamp tubes for drying, so that the operation efficiency is doubled, and the method is suitable for mass production.

Drawings

Fig. 1 is a general schematic diagram of a U-tube dryer.

Fig. 2 is a partial front view of a cabinet including a hook set and a hot air duct.

Fig. 3 is a schematic right view of the hook set and the hot air duct in the chassis.

FIG. 4 is an oblique view of the upper tube assist device.

FIG. 5 is a front view of the upper tube assist device.

Fig. 6 is a schematic view of the top view of the recycling bin.

Fig. 7 is a front view of a recycling bin.

Fig. 8 is a schematic view of a door curtain device at the entrance of an oven.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description. It should be noted that the following examples are only for illustrating the technical solutions of the present invention and are not limited thereto, and any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be included in the technical solutions of the present invention.

As shown in fig. 1, the driving sprocket 1 and the driven sprocket 4 constitute an endless conveyor belt with a conveyor chain 3, and a series of hook groups 5 are equidistantly installed on the chain 3. The main part of the conveyor belt extends into a relatively closed drying cabinet 7. At the entrance of the conveyor into the cabinet, there is an upper tube auxiliary device 6 mounted on the frame 2. In the machine box, along the direction of the conveyor belt, a hot air duct 8 is arranged below the hook. Three square funnel-shaped structures 9 are arranged at the bottom of the case 7 and are connected in series at the inlet side close to the conveyor belt, and a recovery pool is arranged below the case to form a powder-liquid recovery mechanism.

The structure of the hot air duct is shown in fig. 2 and fig. 3, and in fig. 3, the dotted line is shown by the lamp tube hung by the hook. The hot air duct 8 is positioned below the conveying chain and is aligned with the hook lamp tube; the upper surface of the duct body is provided with a plurality of Y-shaped double-hole airflow nozzles 13. The Y-shaped air flow nozzles 13 are arranged at equal intervals, the plane on which the Y-shaped air flow nozzles are arranged is axially vertical to the hot air pipeline, the distance between the Y-shaped air flow nozzles and the hook is equal to the distance between the Y-shaped air flow nozzles and the hook, and the axial positions of the Y-shaped air flow nozzles on the hot air pipeline are aligned with the left pipe orifice of the lamp tube hung when the conveyor belt stays. The lower part of the Y-shaped nozzle is communicated with the hot air pipeline, the upper part of the Y-shaped nozzle is branched into two airflow jet holes, and the jet holes face to pipe orifices below the two rows of lamp tubes which are respectively aligned and hung.

As shown in fig. 4 and 5, the structure of the hook group 5 and the upper pipe auxiliary device 6 on the partial conveying chain is schematically shown. Each hook group is provided with a fixed plate 10 which is arranged on the conveying chain 3, and three hooks 11 are fixed on the fixed plate 10; each hook 11 has a front groove and a rear groove, and can hang a pair of lamps. The rotating shaft 14 is arranged on the frame 2, the three baffles 12 are fixed on the rotating shaft 14, the lower ends of the baffles 12 are forked, and a gap is reserved in the middle to prevent the baffles from colliding with the hook. The rocker 15 is fixedly connected with the rotating shaft 14, and the rocker 15 is connected with a power mechanism, so that the rotating shaft can rotate, and the baffle 12 is driven to swing back and forth within a range of 90 degrees, namely from a horizontal state to a vertical downward state; the lamp tube hung in the groove in front of the hook can be pushed to the groove in the back by pushing the baffle plate 12.

The mechanism of the tube-mounting auxiliary device to place the tubes in order in the two grooves of the hook to form a double-row tube is described below. As shown in fig. 5, the hook groups are arranged at equal intervals, and all the hooks are arranged at equal intervals. The baffles are arranged at equal intervals, and the interval is twice of the interval of the hooks. The conveyor belt travels a distance of three hook pitches at a time. The lamp tube transfer device of the previous procedure is three parallel clamping jaws, the distance is equal to the baffle, and the positions of the clamping jaws are respectively corresponding to the

baffles

1b, 2b and 3 b. When the conveyer belt is in operation, the three baffles keep horizontal lifting. Each time the conveyor belt is stopped, the hooks at 3a are aligned with the stop 1b, the hooks at 6a are aligned with the stop 2b, and the hooks at 8a are aligned with the stop 3b, as shown, the tube transfer device will clamp three tubes above the hooks at 4a, 6a, 8a and release the jaws, and the tubes are hung on the front grooves of the three hooks. Then the

baffle plates

1b, 2b and 3b rotate and descend to push the lamp tubes at the three positions to the groove at the rear part of the hook, and then the baffle plates return to a horizontal lifting state. Then the lamp tube device is placed again to the front grooves of the three hooks. Then the hooks at three

positions

4a, 6a and 8a are changed from the no-load state to the state that a pair of front and rear lamps are fully hung respectively. The conveyor belt continues to run, and the same steps are circulated next time. As can be seen from the figure, the empty hook groups at 1a, 2a, 3a reach the positions at 4a, 5a, 6a after one unit of travel, and two hooks at two sides hang a pair of lamps at 4a and 6a respectively; after the lamp tube is moved for the second time, the lamp tube reaches the

positions

7a, 8a and 9a, the middle hook can also hang a pair of lamp tubes at the position 8a, and the hook group finishes loading the lamp tubes; once again the unit travel, the hook set leaves the upper tube assist device range to a position at 10a, 11a, 12 a.

Fig. 6 and 7 are schematic structural views of one of the recovery hoppers 9 of the powder and liquid recovery mechanism. The four

inclined panels

21, 22, 23, 24 form an inverted pentahedron. A pair of

inclined planes

23 and 24 arranged in parallel with the conveying direction is longer, the other pair of

inclined planes

21 and 22 are shorter and have the same width with the conveying channel of the oven, the longer

inclined planes

23 and 24 are intersected at the bottom to form a leaking belt in parallel with the conveying direction, and two ends of the leaking belt are intersected with the shorter

inclined planes

21 and 22; the inclination angles of the four inclined surfaces and the horizontal plane are equal and are 45 degrees. A recycling tank 25 is arranged below each recycling hopper.

The inlet and outlet of the drying cabinet are provided with heat-resistant plastic hanging door curtains. Taking the entrance as an example, as shown in fig. 8, the multiple plastic curtains 30 are installed on the entrance door opening of the oven and distributed on both sides, and an avoidance space is only reserved at the positions of the middle transmission chain 3 and the hook set 5, so that the opening area of the entrance door opening is greatly reduced, and the heat is reduced from escaping from the oven outwards. The curtain arrangement at the exit is the same.

Claims

1. A U-shaped lamp tube dryer is characterized by comprising an annular conveyor belt, a series of hook groups arranged on the conveyor belt, and a dryer case covering a conveyor belt main body; a hot air pipeline and a powder and liquid recovery mechanism are arranged in the drying machine case;

the conveying belt comprises a driving chain wheel and a driven chain wheel which are arranged on the rack and a chain matched with the chain wheels; the hook group comprises a fixed plate and three hooks, the hooks are parallelly and equidistantly arranged on the fixed plate, and the fixed plate is equidistantly arranged on the chain;

the hot air pipeline is a pipeline which is arranged in the case, arranged along the direction of the conveyor belt and positioned right below the hook, and an air flow nozzle is arranged on the upper surface of the pipeline;

the powder and liquid recovery structure is a plurality of square recovery hoppers arranged at the bottom of the case and connected in series at the inlet side close to the lamp tube conveyor belt, and a recovery pool is arranged below the lamp tube conveyor belt.

2. The U-shaped lamp dryer as claimed in claim 1, wherein said hooks each comprise a front and a rear grooves for hanging a pair of lamps; the mounting space of the fixing plate enables all adjacent hooks to be equal in space.

3. The drying machine with U-shaped lamp tubes as claimed in claim 2, wherein the air flow nozzles on the hot air duct are Y-shaped with two holes; the air flow nozzles are arranged at equal intervals, the planes of the air flow nozzles are axially vertical to the hot air pipeline, the distance between the air flow nozzles and the hooks is equal to or twice the distance between the air flow nozzles and the hooks, and the axial positions of the air flow nozzles on the hot air pipeline are aligned with one pipe orifice of the lamp tube hung when the conveyor belt stays; the lower part of the airflow nozzle is communicated with the hot air pipeline, the upper part of the airflow nozzle is branched into two airflow spray holes, and the spray holes face to pipe orifices below the two rows of lamp tubes which are respectively aligned and hung.

4. The U-shaped lamp dryer as claimed in claim 2, wherein a top duct auxiliary device is provided at an entrance of said cabinet of said conveyor; the upper pipe auxiliary device comprises a rotating shaft arranged on the rack, and three baffles are fixed on the rotating shaft in parallel at equal intervals; the distance between the baffles is twice of the distance between the hooks, the baffles are arranged in alignment with the hooks, and the middle of the baffles is forked; one end of the rotating shaft is fixed with the rocker, the rocker is connected with the power mechanism and can drive the baffle to swing back and forth between a horizontal lifting state and a vertical downward state, and therefore the lamp tube hung in the front groove of the hook is pushed to the rear groove.

5. The drying machine with U-shaped lamp tubes as claimed in claim 2, wherein the number of the recycling hoppers is three; the recovery hopper is in a rectangular funnel shape and is a pentahedron with an upper bottom surface; one pair of the four inclined planes is longer and shorter and has the same width with the oven conveying channel, the longer two inclined planes are intersected at the bottom to form a leaking belt parallel to the conveying direction, and the two ends of the leaking belt are intersected with the shorter two inclined planes; the inclination angles of the four inclined surfaces and the horizontal plane are equal and are between 40 and 45 degrees.

6. The U-shaped lamp dryer as claimed in claim 2, wherein hanging curtains are provided on the cabinet at the entrance and exit of the conveyor, said curtains being disposed at both sides of the conveyor chain and the hook set.