Vacuum drying equipment with transmission device

Abstract

The utility model discloses a vacuum drying device with a transmission device, the transmission device comprises a conveying mechanism and a power mechanism, the conveying mechanism is arranged in a groove body of the vacuum drying device, and when a workpiece is dried, the workpiece can move in the horizontal direction, so that the workpiece is heated uniformly, and the drying efficiency is improved. The drying time is shortened while the drying effect is guaranteed, the drying efficiency is improved, energy consumption is reduced, and the production cost is reduced; in addition, the grooved rollers of the conveying mechanism have two mounting modes, so that the conveying mechanism can be matched with workpieces of different specifications, and the applicability of the vacuum drying equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum drying equipment, in particular to a vacuum drying equipment with a transmission device. Background Art

[0002] During the production process of solar cells, it is necessary to clean and dry the surface of the solar cells. When drying them, generally, the cells need to be placed in a closed drying tank, and the inside of the drying tank is evacuated during the drying process to promote the rapid drying of the cells. At present, the vacuum drying tanks used in the industry are usually static structures. Specifically, after the workpiece enters the tank body, the workpiece remains stationary throughout the drying process. And since vacuum drying generally uses a heating method of light radiation, this static drying structure has a phenomenon of uneven heating to a certain extent, resulting in problems such as inconsistent drying speed and uneven drying of the workpiece. If we want to ensure that the workpieces in the tank are fully dried, we need to extend the drying time, but this will reduce the drying efficiency and the energy consumption of the drying equipment is relatively high.

[0003] For example, a vacuum drying tank mechanism disclosed in the utility model patent with the authorization announcement number CN 213631199 U includes: a vacuum drying tank body and a third cover plate for covering the vacuum drying tank body to make the vacuum drying tank body sealable. A third vacuum pumping assembly and a first heating device are arranged on the vacuum drying tank body, and it also includes a control mechanism for controlling the vacuum drying tank mechanism. The third vacuum pumping assembly and the first heating device are respectively electrically connected to the control mechanism. This vacuum drying tank mechanism uses a vacuum pump to evacuate the air in the workpiece, and raises the temperature of the vacuum drying tank body through the first heating device to evaporate the moisture on the workpiece, so as to dry the workpiece, but there is a problem of uneven heating of the workpiece and the drying efficiency is relatively low. Summary of the Utility Model

[0004] To solve the above problems, the utility model provides a vacuum drying equipment with a transmission device, which makes the workpieces in the equipment heated evenly, ensures the drying effect, and shortens the drying time at the same time.

[0005] The technical solution of the utility model to solve the above problems is as follows:

[0006] A vacuum drying equipment with a transmission device includes a tank body with openings at opposite front and rear ends, a heating device placed in the tank body for drying the workpiece based on radiation heating, a vacuum pumping device communicated with the tank body, and a transmission device; the transmission device includes a conveying mechanism arranged in the tank body; the conveying mechanism includes two supporting plates arranged along the left and right sides of the tank body, and a left conveying groove and a right conveying groove composed of a plurality of grooved rollers arranged on the left and right sides of the tank body based on the supporting plates.

[0007] Preferably, the radiation heating method is selected from at least one of resistance wire thermal radiation and infrared thermal radiation.

[0008] Preferably, a synchronizing shaft is connected between the left conveying trough and the right conveying trough.

[0009] Preferably, the synchronizing shaft is arranged between the grooved rollers exactly in the middle of two supporting plates.

[0010] Preferably, the grooved roller includes a base, a first side plate and a second side plate arranged on both sides of the base, a roller core shaft passing through the first side plate and having one end placed in the second side plate, and a roller body arranged between the first side plate and the second side plate and sleeved on the roller core shaft; it further includes a driving gear sleeved on the roller core shaft and close to one end of the first side plate.

[0011] Preferably, the driving gear is arranged at one end of the first side plate in the direction away from the second side plate.

[0012] Preferably, the conveying mechanism further includes a transmission gear arranged between adjacent driving gears. The transmission gear meshes with the driving gear.

[0013] Preferably, the grooved roller further includes a limiting piece arranged based on the driving gear for preventing the driving gear from axially moving.

[0014] Preferably, the limiting pieces are arranged at both ends of the driving gear.

[0015] Preferably, bearings are arranged inside both the first side plate and the second side plate; the bearings are sleeved on the outer side of the roller core shaft.

[0016] Preferably, the bearings are selected from at least one of rolling bearings and sliding bearings.

[0017] Preferably, the outer surface of the roller body includes a positioning part with knurling distributed thereon, a positioning hole is arranged on the positioning part, a first mounting hole and a second mounting hole are arranged on the roller core shaft; the positioning hole can be coaxial with the first mounting hole / the second mounting hole; the grooved roller further includes a positioning pin passing through the positioning hole and the first mounting hole / the second mounting hole.

[0018] Preferably, the first mounting hole is close to the first side plate.

[0019] Preferably, both ends of the supporting plate are fixedly arranged at the opening of the trough body; a supporting leg fixedly connected with the trough body for supporting the supporting plate is arranged below the supporting plate; a connecting plate is connected between the two supporting plates.

[0020] Preferably, the number of the connecting plates is not less than 2.

[0021] Preferably, the transmission device further includes a power mechanism disposed outside the tank body. The power mechanism includes a motor, a magnetic fluid seal, and a coupling disposed outside the tank body, with one end of the coupling connected to the output end of the motor and the other end connected to the input end of the magnetic fluid seal. The output end of the magnetic fluid seal is connected to the conveying mechanism inside the tank body.

[0022] Preferably, the output end of the magnetic fluid seal passes through the side wall of the tank body and is connected to a coupling sleeve with a gear end, and the gear end meshes with the transmission gear.

[0023] Preferably, the vacuum drying equipment with the transmission device further includes a vacuum-breaking device communicated with the tank body for breaking the vacuum environment inside the tank body.

[0024] The present utility model has the following effects:

[0025] (1) In the vacuum drying equipment of the present utility model, a conveying mechanism is provided inside the tank body. When the workpiece is dried, the workpiece can be moved horizontally, so that the workpiece is heated evenly, the drying effect is ensured while the drying time is shortened, the drying efficiency is improved, and thus the energy consumption is reduced and the production cost is lowered.

[0026] (2) The grooved rollers of the conveying mechanism inside the tank body are provided with two installation methods, so that the conveying mechanism can match workpieces of different specifications, and the applicability of the vacuum drying equipment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of the conveying mechanism disclosed in the embodiment of the present utility model;

[0028] Figure 2 It is a sectional view of the first grooved roller disclosed in the embodiment of the present utility model;

[0029] Figure 3 It is a sectional view of the second grooved roller disclosed in the embodiment of the present utility model;

[0030] Figure 4 It is a schematic diagram of the installation method of the second grooved roller when the positioning hole is coaxial with the first installation hole disclosed in the embodiment of the present utility model;

[0031] Figure 5 It is a schematic diagram of the installation method of the second grooved roller when the positioning hole is coaxial with the second installation hole disclosed in the embodiment of the present utility model;

[0032] Figure 6 It is a sectional view of the power mechanism disclosed in the embodiment of the present utility model;

[0033] In the figure: 11 - pallet, 12 - support feet, 13 - connecting plate, 14 - synchronizing shaft, 21 - base, 22 - first side plate, 23 - second side plate, 24 - roller mandrel, 241 - first mounting hole, 242 - second mounting hole, 25 - roller body, 251 - positioning hole, 26 - driving gear, 27 - transmission gear, 28 - limiting piece, 29 - bearing, 31 - motor, 32 - flange, 33 - coupling, 34 - magnetic fluid seal, 35 - coupling sleeve. Detailed implementation mode

[0034] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0035] A vacuum drying device with a transmission device, as Figure 1 shown, includes a tank body. Openings are provided at the opposite front and rear ends of the tank body. Doors are installed in the openings, and an opening and closing assembly for controlling the opening or closing of the doors is connected to the doors, thereby realizing the opening or sealing of the tank body.

[0036] A heating device is also provided in the tank body. The heating method of infrared thermal radiation is adopted to dry the workpieces placed in the tank body. In the tank body, the heating device can be arranged above or below or both above and below at the same time; when arranged above, after the workpieces enter the tank body, it is necessary to ensure that the heating device is installed above the workpieces; when arranged below, it is also necessary to ensure that the heating device is installed below the workpieces.

[0037] In addition, a vacuum pumping device is also communicated inside the tank body. The vacuum pumping device includes a vacuum pump and a vacuum pumping pipe. Among them, the vacuum pump is arranged outside the tank body. One end of the vacuum pumping pipe is connected to the vacuum pump, and the other end extends into the tank body through a vacuum pumping port provided on the tank body and is arranged below the heating device. The setting position of the vacuum pumping port on the tank body is not limited. In this embodiment, the vacuum pumping port is arranged on the side wall of the tank body. Starting the vacuum pump can pump out the gas in the tank body, creating a vacuum environment in the tank body, which is beneficial to the rapid discharge of water vapor and shortens the drying time of the workpieces.

[0038] A vacuum breaking device is also communicated inside the tank body. The vacuum breaking device includes a vacuum breaking pipe. The vacuum breaking pipe extends into the tank body through a vacuum breaking port provided on the tank body outside the tank body and is arranged below the heating device. After vacuum drying for a period of time, gas is introduced into the tank body through the vacuum breaking pipe to break the vacuum environment in the tank body and form a thermal convection in the tank body to enhance the drying effect.

[0039] In addition, the vacuum drying equipment is also provided with a transmission device. The transmission direction of the transmission device is parallel to the opening direction of the tank body. On the one hand, it can facilitate the workpiece to enter and exit the tank body; on the other hand, when the workpiece is dried, the workpiece can be continuously or intermittently transmitted in a forward and reverse direction, so that the workpiece moves horizontally back and forth along the opening direction, ensuring that the workpiece can be heated evenly and improving the drying effect.

[0040] The transmission device includes a conveying mechanism and a power mechanism. Among them, the conveying mechanism is arranged inside the tank body and is used to convey the workpieces in the tank body; the power mechanism is arranged outside the tank body and is used to provide power for the conveying mechanism.

[0041] The conveying mechanism includes two support plates 11 arranged along the left and right sides of the tank body. The two ends of the support plate 11 are fixed at the opening of the tank body. The outermost end of the support plate 11 is about 5 mm away from the opening of the tank body, making it as close as possible to the opening of the tank body and the door, reducing the docking gap with the feeding and discharging mechanism outside the tank body, and making the transmission of the workpiece more stable when entering and exiting the docking without tipping over or jamming. A support foot 12 is arranged below the support plate 11, and the support foot 12 is fixedly connected to the tank body by bolts. And a plurality of connecting plates 13 are arranged between the two support plates 11. The connecting plates 13 are connected to the two support plates 11 and are perpendicular to the support plates 11, which can ensure the stability of the conveying mechanism to the greatest extent. The number of the connecting plates 13 is at least two or more. In this embodiment, the number of the connecting plates 13 is 3.

[0042] The conveying mechanism further includes a left conveying groove and a right conveying groove which are distributed on the left and right sides of the tank body and are arranged above the two support plates 11. Both conveying grooves are composed of a plurality of grooved rollers. And a synchronizing shaft 14 is connected between the grooved rollers arranged in the middle of the two support plates 11 for transmitting power so that the two rows of grooved rollers can run synchronously.

[0043] There are two structures of the grooved rollers, which are divided into the first grooved roller and the second grooved roller. Among them, the left conveying groove can be composed of the first grooved roller or the second grooved roller; the right conveying groove can be composed of the first grooved roller or the second grooved roller. In this embodiment, the grooved roller structures of the left conveying groove and the right conveying groove are different. The left conveying groove is composed of the first grooved roller, and the right conveying groove is composed of the second grooved roller.

[0044] The first grooved roller includes a base 21, a first side plate 22 and a second side plate 23. The base 21 is horizontally arranged, and the first side plate 22 and the second side plate 23 are respectively vertically arranged on both sides of the base 21. The roller mandrel 24 passes through the first side plate 22 and is placed in the second side plate 23. Bearings 29 are arranged in both side plates, and the bearings 29 are sleeved outside the roller mandrel 24. In this embodiment, the bearing 29 is a rolling bearing. A roller body 25 is arranged between the first side plate 22 and the second side plate 23. It is sleeved outside the roller mandrel 24, and knurling is arranged on the outer surface of the roller body 25 as one of the ways to increase the conveying friction. And a driving gear 26 is sleeved outside the roller mandrel 24 for driving the grooved roller to rotate. The driving gear 26 is close to the first side plate 22 and is arranged at the end of the first side plate 22 in the direction away from the second side plate 23. Limit pieces 28 are arranged at both ends of the driving gear 26 to prevent the driving gear 26 from axially moving relative to the roller mandrel 24. In addition, a transmission gear 27 is arranged between the driving gears 26 of two adjacent first grooved rollers, and the driving gear 26 and the transmission gear 27 are used to realize the transmission of multiple first grooved rollers on the same pallet 11.

[0045] The structure of the second grooved roller is substantially the same as that of the first grooved roller, and the only difference is that: a knurled positioning part is arranged on the roller body 25 of the second grooved roller, and a positioning hole 251 is arranged in the positioning part. The axial direction of the positioning hole 251 is perpendicular to the axial direction of the roller body 25. In addition, a first mounting hole 241 and a second mounting hole 242 are arranged on the roller mandrel 24, and the first mounting hole 241 is closer to the first side plate 22.

[0046] There are two installation methods for the second grooved roller. The first one is: the positioning part is close to the first side plate 22. At this time, the positioning hole 251 is coaxial with the first mounting hole 241, and the positioning pin can be inserted into the positioning hole 251 and the first mounting hole 241. The second one is: the positioning part is close to the second side plate 23. At this time, the positioning hole 251 is coaxial with the second mounting hole 242, and the positioning pin can be inserted into the positioning hole 251 and the second mounting hole 242.

[0047] The workpiece described in this embodiment is a flower basket. At present, there are two types of flower baskets with different lengths of 700 mm and 720 mm in the industry. The two installation methods of the second grooved roller can correspond to these two types of flower baskets with different lengths. When the positioning pin is inserted into the first mounting hole 241, the transmission mechanism can transmit a 720-mm-long flower basket. When the positioning pin is inserted into the second mounting hole 242, the transmission device can transmit a 700-mm-long flower basket.

[0048] The power mechanism includes a motor 31, a coupling 33, and a magnetic fluid seal 34. The motor 31 is installed outside the tank body through a flange 32. One end of the coupling 33 is connected to the output end of the motor 31, and the other end is connected to the input end of the magnetic fluid seal 34. A through hole is provided in the side wall of the tank body. The magnetic fluid seal 34 is installed on the outer wall of the tank body. After the output end of the magnetic fluid seal 34 extends into the tank body through the through hole, it is connected to a coupling sleeve 35 with a gear end. The gear end can replace one of the driving gears 26 and meshes with the transmission gear 27, thereby transmitting power to the conveying mechanism in the tank. Since the inside of the tank body is in a vacuum negative pressure environment during the drying process, the magnetic fluid seal 34 can effectively achieve power transmission and ensure the operation of the conveying mechanism.

[0049] The power mechanism can be arranged on the left side of the tank body or on the right side of the tank body. In this embodiment, the power mechanism is arranged on the right side of the tank body.

[0050] The operating principle of the transmission device disclosed in this embodiment is as follows:

[0051] The motor 31 transmits power to the conveying mechanism through the coupling 33, the magnetic fluid seal 34, and the coupling sleeve 35 with a gear end. The gear end meshes with the transmission gear 27, thereby realizing the rotation of the grooved rollers forming the left / right conveying tank. With the help of the synchronous shaft 14, the two rows of grooved rollers can rotate synchronously, and finally the transmission of workpieces in the left conveying tank and the right conveying tank placed in the tank body is realized.

Claims

1. A vacuum drying device with a transmission device, characterized in that, It includes a trough body with openings provided at opposite front and rear ends, a heating device placed in the trough body for drying workpieces based on radiant heating, a vacuum pumping device communicated with the trough body, and a transmission device; the transmission device includes a conveying mechanism arranged in the trough body; the conveying mechanism includes two supporting plates (11) arranged along the left and right sides of the trough body, and a left conveying trough and a right conveying trough composed of a plurality of grooved rollers arranged on the left and right sides of the trough body based on the supporting plates (11).

2. The vacuum drying equipment with a transmission device according to claim 1, characterized in that, A synchronizing shaft (14) is connected between the left conveying trough and the right conveying trough.

3. The vacuum drying equipment with a transmission device according to claim 2, characterized in that, The grooved roller includes a base (21), a first side plate (22) and a second side plate (23) arranged on both sides of the base (21), a roller core shaft (24) passing through the first side plate (22) and having one end placed in the second side plate (23), and a roller body (25) arranged between the first side plate (22) and the second side plate (23) and sleeved on the roller core shaft (24); it also includes a driving gear (26) sleeved on the roller core shaft (24) and close to one end of the first side plate (22).

4. The vacuum drying equipment with a transmission device according to claim 3, characterized in that, The conveying mechanism further includes a transmission gear (27) arranged between adjacent driving gears (26).

5. The vacuum drying equipment with a transmission device according to claim 3, characterized in that, The grooved roller further includes a limiting piece (28) arranged based on the driving gear (26) for preventing the driving gear (26) from axially moving.

6. The vacuum drying equipment with a transmission device according to claim 3, characterized in that Bearings (29) are arranged inside both the first side plate (22) and the second side plate (23); the bearings (29) are sleeved outside the roller core shaft (24).

7. The vacuum drying equipment with a transmission device according to claim 3, characterized in that, The outer surface of the roller body (25) includes a positioning part with knurling, a positioning hole (251) is arranged on the positioning part, and a first mounting hole (241) and a second mounting hole (242) are arranged on the roller core shaft (24); the positioning hole (251) can be coaxial with the first mounting hole (241) / the second mounting hole (242); the grooved roller further includes a positioning pin passing through the positioning hole (251) and the first mounting hole (241) / the second mounting hole (242).

8. The vacuum drying equipment with a transmission device according to claim 1, characterized in that, Both ends of the supporting plate (11) are fixedly arranged at the opening of the trough body; a supporting foot (12) fixedly connected with the trough body is arranged below the supporting plate (11) for supporting the supporting plate (11); a connecting plate (13) is connected between the two supporting plates (11).

9. The vacuum drying equipment with a transmission device according to claim 4, characterized in that The transmission device further includes a power mechanism arranged outside the trough body, the power mechanism includes a motor (31) arranged outside the trough body, a magnetic fluid seal (34), and a coupling (33) with one end connected to the output end of the motor (31) and the other end connected to the input end of the magnetic fluid seal (34); the output end of the magnetic fluid seal (34) is connected to the conveying mechanism inside the trough body.

10. A vacuum drying device with a transmission device according to claim 9, characterized in that, The output end of the magnetic fluid seal (34) passes through the side wall of the trough body and is connected to a coupling sleeve (35) with a gear end; the gear end meshes with the transmission gear (27).

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