CN114234595B

CN114234595B - Electric heating constant temperature air blast drying box

Info

Publication number: CN114234595B
Application number: CN202111547911.2A
Authority: CN
Inventors: 黄保斌; 刘洋
Original assignee: Shenzhen South Lixun Detection Co ltd
Current assignee: Shenzhen South Lixun Detection Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-12-09
Anticipated expiration: 2041-12-16
Also published as: CN114234595A

Abstract

The application discloses an electric heating constant-temperature air blowing drying box which comprises a drying box body, a first rotating assembly and a plurality of bearing plates, wherein the first rotating assembly is installed in the drying box body and is close to the middle part of the drying box body; the drying box comprises a drying box body, wherein the outer top surface and the outer bottom surface of the drying box body are both provided with a first air blower, an air outlet of the first air blower is communicated with the top or the bottom of the drying box body, two opposite inner side surfaces of the drying box body are both provided with an electric heating plate, two opposite outer side surfaces of the drying box body are both provided with a second air blower, the two electric heating plates are respectively close to the two second air blowers, the second air blower is close to the electric heating plates on the same side, and an air outlet of the second air blower is communicated with the side surface of the drying box body; the drying cabinet body top is equipped with the constant pressure valve. This application has the effect that improves the dry degree of consistency of heating.

Description

Electric heating constant temperature blast air drying box

Technical Field

The application relates to the field of lamp drying, in particular to an electric heating constant-temperature air blowing drying box.

Background

The drying box is a device which has a drying effect on a product to be dried by heating and blowing. The inside and the outside of the drying box can exchange air, and moisture is also taken out of the box body through the continuous exchange of the air inside and outside the box body, so that the drying purpose is achieved.

In the related art, the drying cabinet includes a cabinet, an electric heater connected in the cabinet, and an air blower connected to a top surface of the cabinet and communicated with the cabinet. And after the product to be dried is placed in the box body, starting the electric heater and the air blower, and drying the product to be dried.

Aiming at the related technologies, the inventor thinks that the arrangement of the electric heater and the air blower is easy to cause uneven heating of the products to be dried in the box body, and the products to be dried are subjected to unilateral air blowing, which causes the defect that the uniformity of the products to be dried in the drying box in a heating and drying mode is reduced.

Disclosure of Invention

In order to improve the dry degree of consistency of heating, this application discloses electric heat constant temperature air blast drying cabinet adopts following technical scheme:

the electrothermal constant-temperature air blowing drying box comprises a drying box body, a first rotating assembly and a plurality of bearing plates, wherein the first rotating assembly is arranged in the drying box body and is close to the middle part of the drying box body;

the drying box comprises a drying box body, wherein the top surface and the bottom surface of the drying box body are both provided with a first air blower, an air outlet of the first air blower is communicated with the top or the bottom of the drying box body, two opposite inner side surfaces of the drying box body are both provided with an electric heating plate, two opposite outer side surfaces of the drying box body are both provided with a second air blower, the two electric heating plates are respectively close to the two second air blowers, the second air blower is close to the electric heating plate on the same side, and an air outlet of the second air blower is communicated with the side surface of the drying box body; the drying cabinet body top is equipped with the constant pressure valve.

Through adopting above-mentioned technical scheme, the workman will treat that the dry product is placed on the tray of drying cabinet body, starts first air-blower, second air-blower and electric plate, controls first rotating assembly again for the tray is rotatory, and because the distribution of first air-blower, second air-blower and electric plate is even, makes treating on the tray that the dry product is by even drying, thereby has improved the degree of consistency of heating and drying.

Optionally, a clamping assembly for clamping a product to be dried is arranged on the top surface of the bearing tray, a second rotating assembly is connected to the bottom surface of the bearing tray, and the second rotating assembly for driving the clamping assembly to rotate is connected to the bottom of the clamping assembly.

Through adopting above-mentioned technical scheme, will treat that dry product centre gripping is on the centre gripping subassembly, starts the second rotating assembly, can order about the centre gripping subassembly and drive and treat that dry product is rotatory, and then further improve the dry degree of consistency of heating.

Optionally, the second rotating assembly comprises a second servo motor and a containing box, the containing box is connected to the bearing tray, the second servo motor is connected to the containing box, the length direction of an output shaft of the second servo motor is perpendicular to the bearing tray, the top end of the output shaft of the second servo motor penetrates through the top surface of the containing box and is located above the bearing tray, and the bottom surface of the clamping assembly is connected to the top end of the output shaft of the second servo motor.

Through adopting above-mentioned technical scheme, control second servo motor, second servo motor's output shaft orders about the centre gripping subassembly rotatory, and then drives the rotation of treating dry product on the centre gripping subassembly to be favorable to improving the dry degree of consistency of heating, and be favorable to improving dry speed.

Optionally, a bar-shaped sliding hole is formed in the bearing tray, one end of the bar-shaped sliding hole is close to the circle center of the bearing tray, the other end of the bar-shaped sliding hole is far away from the circle center of the bearing tray, a bearing cover is arranged on the bottom face of the bearing tray, the bearing cover is located below the bar-shaped sliding hole and is matched with the bar-shaped sliding hole, the accommodating box is connected in the bearing cover in a sliding mode, a first driving piece used for driving the accommodating box to slide along the bearing cover is arranged in the bearing cover, the first driving piece is connected with the accommodating box, an output shaft of the second servo motor penetrates through the sliding hole, and the clamping assembly is located above the sliding hole.

Through adopting above-mentioned technical scheme, control first driving piece, can order about the holding box and slide along the bearing cover for second servo motor's output shaft drives the centre gripping subassembly and slides along the direction of keeping away from the bearing dish centre of a circle or being close to the bearing dish centre of a circle, is favorable to adjusting the position of centre gripping subassembly, and then improves dry degree of consistency.

Optionally, the centre gripping subassembly includes bearing plate, control screw and centre gripping strip, the bearing plate bottom surface is connected in the top of second servo motor's output shaft, the bearing plate top surface is connected with and is used for the restriction to treat the frame that blocks that dry product position, block the frame and be parallel with the bearing plate, control screw passes one of them side of blocking the frame and with block frame threaded connection, centre gripping strip sliding connection is in blocking the frame, the centre gripping strip is located the one end rotation connection that blocks the frame with control screw, the moving direction when control screw is rotatory is unanimous with the sliding direction of centre gripping strip.

Through adopting above-mentioned technical scheme, will treat that the dry product is placed on the bearing board, the rotary control screw rod for control bolt promotes the centre gripping strip and removes, and the centre gripping strip cooperation blocks that the frame presss from both sides tightly treats the dry product, thereby reduces the condition that treats that the dry product drops.

Optionally, first rotating assembly includes a servo motor and a back shaft, a servo motor connects in the bottom surface of drying cabinet body, the back shaft is vertical setting and rotates to be connected in the drying cabinet body, a servo motor's output shaft is vertical upwards to set up and is connected with the bottom of back shaft, and is a plurality of hold the tray and connect in the back shaft.

Through adopting above-mentioned technical scheme, control first servo motor, first servo motor's output shaft orders about the back shaft rotation, and then makes the tray rotatory more steadily to improve the dry degree of consistency of heating.

Optionally, the supporting shaft is provided with a supporting pipe sleeve, the plurality of bearing trays are sleeved on the supporting pipe sleeve and are slidably connected with the supporting pipe sleeve, the supporting pipe sleeve is internally provided with a plurality of second driving parts, and the plurality of second driving parts are respectively connected with the plurality of bearing trays and are used for adjusting the positions of the bearing trays on the supporting pipe sleeve.

Through adopting above-mentioned technical scheme, control second driving piece can adjust the space between two adjacent tray to the workman of being convenient for places and treats the dry product.

Optionally, a plurality of groups of sliding grooves are formed in the outer side wall of the supporting pipe sleeve, the number of the sliding grooves is equal to the number of the bearing trays, the sliding grooves are arranged at equal intervals along the length direction of the supporting pipe sleeve, the bearing trays and the part, contacting with the supporting pipe sleeve, of the bearing trays are connected with two opposite sliding blocks, each group of sliding grooves comprises two opposite sliding grooves, the two sliding blocks are respectively connected in the two sliding grooves in the same group in a sliding mode, the number of the second driving pieces is equal to the number of the sliding grooves, and the second driving pieces are used for driving the sliding blocks to move along the sliding grooves and are connected in the sliding grooves and connected with the sliding blocks.

Through adopting above-mentioned technical scheme, being provided with of spout and slider does benefit to the tray and removes along the support pipe box better to be convenient for adjust the position of tray.

Optionally, the side of the clamping strip away from the control screw is connected with a clamping pad, and the side of the clamping pad close to the product to be dried is arranged in an arc-shaped surface.

Through adopting above-mentioned technical scheme, the centre gripping is filled up and is provided with and does benefit to the centre gripping better and treat dry product, and plays the effect of protection.

Optionally, the supporting tray is provided with a plurality of air holes.

Through adopting above-mentioned technical scheme, being provided with of gas pocket does benefit to the air current and passes through the tray to be convenient for the drying treats the dry product, improves dry degree of consistency and efficiency.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the workman will treat that the dry product is placed on the tray of drying cabinet body, starts first air-blower, second air-blower and electric plate, controls first rotating assembly again for the tray is rotatory, and because the distribution of first air-blower, second air-blower and electric plate is even, makes the dry product of treating on the tray by even drying, thereby has improved the degree of consistency of heating and drying.

2. The first driving piece is controlled, the containing box can be driven to slide along the bearing cover, the output shaft of the second servo motor drives the clamping assembly to slide along the direction far away from the circle center of the bearing tray or close to the circle center of the bearing tray, the position of the clamping assembly is favorably adjusted, and the drying uniformity is further improved.

3. The product to be dried is placed on the bearing plate, the control screw is rotated, so that the control bolt pushes the clamping strip to move, the clamping strip is matched with the blocking frame to clamp the product to be dried, and the condition that the product to be dried falls is reduced.

Drawings

Fig. 1 is a schematic view of the whole structure of an electric heating constant temperature air drying oven in the embodiment of the application.

Fig. 2 is a sectional view of an electric heating constant temperature forced air drying cabinet in the embodiment of the present application.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Description of reference numerals:

1. a drying box body; 2. a support tray; 3. a first blower; 4. an electric hot plate; 5. a second blower; 6. a door body; 7. a first rotating assembly; 71. a first servo motor; 72. a support shaft; 8. a cover body; 9. a constant pressure valve; 10. a support bar; 11. a support sleeve; 12. a chute; 13. a slider; 14. a second cylinder; 15. a protrusion; 16. a partition plate; 17. a clamping assembly; 171. a support plate; 172. controlling the screw; 173. a clamping bar; 18. a second rotating assembly; 181. a second servo motor; 182. a containing box; 19. a strip-shaped slide hole; 20. a bearing cover; 21. a first cylinder; 22. a blocking frame; 23. a control head; 24. a clamping pad; 25. and (4) air holes.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses electric heat constant temperature air blast drying cabinet. Referring to fig. 1 and 2, the electric heating constant temperature air drying oven comprises an oven body 1, a first rotating assembly 7 and a plurality of bearing trays 2. One side surface of the drying box body 1 is provided with a door body 6 for opening or closing the drying box body 1. The outer top surface and the outer bottom surface of drying cabinet body 1 all are fixed with two first air-blower 3, and the air outlet and the drying cabinet body 1 intercommunication of first air-blower 3. The first rotating assembly 7 is connected in the drying box body 1, and the first rotating assembly 7 is close to the middle of the drying box body 1 and is located among the four first blowers 3. The plurality of support trays 2 are connected to the first rotating assembly 7 for placing the products to be dried, and the first rotating assembly 7 is used for driving the support trays 2 to rotate. The length direction of the first rotating assembly 7 is parallel to the height direction of the drying box body 1, and the plurality of bearing trays 2 are arranged in a row along the length direction of the first rotating assembly 7.

Referring to fig. 1 and 2, two opposite inner side surfaces of the drying box body 1 are respectively fixed with an electric heating plate 4 which is vertically arranged, and the door body 6 is positioned between the two electric heating plates 4. Two opposite outer side surfaces of the drying box body 1 are respectively fixed with a second air blower 5, and the door body 6 is positioned between the two second air blowers 5. The air outlet of second air-blower 5 passes through the cover body 8 and communicates with drying cabinet body 1, and the cover mouth that second air-blower 5 was kept away from to the cover body 8 is and stretches into drying cabinet body 1 setting, and the cover mouth of the cover body 8 is close to the electric plate 4 of homonymy. The length of the cover opening of the cover body 8 is equal to that of the electric hot plate 4. The top of the drying box body 1 is provided with a constant pressure valve 9 for balancing the pressure in the drying box body 1.

Referring to fig. 2, it should be clear that the number of the support trays 2 in the embodiment of the present application may be, but is not limited to, 2, 3, 4, 5, etc., and the number of the support trays 2 is taken as an example in the present embodiment.

Referring to fig. 2, four support rods 10 are fixed on the bottom surface of the drying box body 1, and the four support rods 10 are respectively close to four corners of the bottom surface of the drying box body 1. The first rotating assembly 7 comprises a first servo motor 71 and a supporting shaft 72, the first servo motor 71 is fixed in the middle of the bottom surface of the drying box body 1, and the first servo motor 71 is positioned between the two first blowers 3 on the outer bottom surface of the drying box body 1. The supporting shaft 72 is vertically arranged, and two ends of the supporting shaft 72 are respectively rotatably connected to the inner top surface and the inner bottom surface of the drying box body 1. The output shaft of the first servo motor 71 is vertically arranged upwards, and the output shaft of the first servo motor 71 is connected with the bottom end of the supporting shaft 72. The support plate 2 is connected to the support shaft 72, and the support shaft 72 rotates to drive the support plate 2 to rotate.

Referring to fig. 2 and 3, the supporting shaft 72 is sleeved and fixed with the supporting pipe sleeve 11 in a vertical arrangement, and the two supporting trays 2 are sleeved on the supporting pipe sleeve 11. The outer side wall of the supporting pipe sleeve 11 is provided with a plurality of groups of sliding grooves 12, and the number of the groups of sliding grooves 12 is equal to the number of the bearing plates 2. In the present embodiment, the number of sets of the chutes 12 is 2. The two sets of sliding grooves 12 are arranged at equal intervals along the length direction of the supporting pipe sleeve 11. And the length direction of the slide groove 12 is parallel to the length direction of the support pipe sleeve 11. Two opposite sliding blocks 13 are fixed on the part of the supporting tray 2 contacted with the supporting pipe sleeve 11. Each group of sliding grooves 12 comprises two opposite sliding grooves 12, and the two sliding grooves 12 in the same group are respectively opposite to the two sliding blocks 13. The two sliding blocks 13 are respectively connected in the two sliding grooves 12 in the same group in a sliding manner. A second driving member is arranged in the sliding chute 12, and the second driving member is a second cylinder 14. The second cylinder 14 is vertically arranged and the bottom thereof is fixedly connected with the bottom end of the chute 12. The top end of the piston rod of the second cylinder 14 is fixedly connected with the bottom surface of the corresponding slide block 13, and is used for driving the slide block 13 to move along the slide groove 12.

Referring to fig. 3, the tray 2 is in a circular plate shape, and the edge of the tray 2 is provided with a protrusion 15 for limiting the position of the product to be dried on the top surface of the tray 2. Four partition plates 16 are fixed on the top surface of the bearing tray 2, one end of each partition plate 16 is fixedly connected with the side surface of the bulge 15 close to the circle center of the bearing tray 2, and the other end of each partition plate 16 is close to the circle center of the bearing tray 2 and has a distance with the support pipe sleeve 11. Four partition plates 16 are arranged at equal intervals to divide the tray 2 into four regions.

Referring to fig. 3, four areas on the top surface of the tray 2 are connected with clamping assemblies 17 for clamping the product to be dried, the bottom surface of the tray 2 is connected with four second rotating assemblies 18, and the four second rotating assemblies 18 are respectively located below the four clamping assemblies 17. A corresponding second rotation assembly 18 is connected to the bottom of the corresponding clamping assembly 17 for driving the clamping assembly 17 to rotate.

Referring to fig. 3, strip-shaped sliding holes 19 are formed in four regions of the supporting plate 2, one end of each strip-shaped sliding hole 19 is close to the center of the supporting plate 2, and the other end of each strip-shaped sliding hole 19 is close to the protrusion 15. Four bearing covers 20 are fixed on the bottom surface of the bearing tray 2, the four bearing covers 20 are respectively positioned below the four strip-shaped sliding holes 19 and are matched with the strip-shaped sliding holes 19, namely, the cover openings of the bearing covers 20 are the same as the strip-shaped sliding holes 19 in size. The second rotating assembly 18 includes a second servo motor 181 and an accommodating box 182, the corresponding accommodating box 182 is slidably connected in the bearing cover 20, a first driving member for driving the accommodating box 182 to slide along the bearing cover 20 is disposed in the bearing cover 20, and the first driving member is a first cylinder 21. The longitudinal direction of the first cylinder 21 is parallel to the longitudinal direction of the support cover 20. The piston rod of the first cylinder 21 is fixedly connected to the accommodating box 182. The second servo motor 181 is fixed in the accommodating box 182, and the length direction of the output shaft of the second servo motor 181 is perpendicular to the supporting plate 2. And the top end of the output shaft of the second servo motor 181 sequentially passes through the top surface of the accommodating box 182 and the corresponding strip-shaped slide hole 19. The bottom surface of the clamping assembly 17 is connected to the top end of the output shaft of the second servo motor 181.

Referring to fig. 3, it should be clear that when the output shaft of the second servo motor 181 drives the clamping assembly 17 to rotate, and the clamping assembly 17 moves along the length direction of the strip-shaped sliding hole 19 along with the second servo motor 181, the area on the supporting tray 2 has enough space for the clamping assembly 17 to rotate.

Referring to fig. 3, the clamping assembly 17 includes a supporting plate 171, a control screw 172 and a clamping bar 173, and the middle of the bottom surface of the supporting plate 171 is fixedly connected to the top end of the output shaft of the second servo motor 181 and is located above the supporting plate 2. The top surface of the supporting plate 171 is fixed with a blocking frame 22 for limiting the position of the product to be dried on the top surface of the supporting plate 171, the blocking frame 22 is parallel to the supporting plate 171, and the outer side surface of the blocking frame 22 is flush with the side edge of the supporting plate 171. The control screw 172 penetrates through one side of the blocking frame 22 and is in threaded connection with the blocking frame 22, the clamping strip 173 is slidably connected in the blocking frame 22, the control screw 172 is horizontally arranged, and the clamping strip 173 is horizontally arranged and is perpendicular to the control screw 172. The clamping bar 173 is rotatably connected to one end of the control screw 172 located inside the blocking frame 22, and one end of the control screw 172 located outside the blocking frame 22 is connected to the control head 23. The control screw 172 moves in the same direction as the sliding direction of the clamping bar 173 when rotating, for pushing the clamping bar 173 so that the clamping bar 173 cooperates with the blocking frame 22 to clamp the product to be dried.

Referring to fig. 3, in order to clamp the product to be dried more stably, a clamping pad 24 is fixed on a side surface of the clamping bar 173 away from the control screw 172, a side surface of the clamping pad 24 close to the product to be dried is arranged in an arc shape, and the clamping pad 24 is a rubber pad.

Referring to fig. 3, in order to facilitate better drying, a plurality of air holes 25 are formed on the top surface of the tray 2, and the plurality of air holes 25 are arranged around the strip-shaped sliding hole 19.

The implementation principle of the electric heating constant temperature air blast drying cabinet of the embodiment of the application is as follows: the door body 6 is opened, and the corresponding area is close to the doorway by controlling the first servo motor 71, so that the workers can place the products to be dried on the clamping assemblies 17 in different areas in sequence. When placing the product to be dried, the product is placed on the top surface of the supporting plate 171 and located in the blocking frame 22, and then the control screw 172 is rotated by the control head 23, so that the control screw 172 pushes the clamping strip 173, and the clamping pad 24 and the blocking frame 22 are matched with each other to clamp the product to be dried. After the products to be dried are placed, the door body 6 is closed, the first air blower 3, the second air blower 5 and the electric heating plate 4 are started, the first servo motor 71 is controlled, the supporting pipe sleeve 11 drives the bearing tray 2 to rotate, and the products to be dried on the bearing tray 2 are uniformly dried due to the fact that the first air blower 3, the second air blower 5 and the electric heating plate 4 are uniformly distributed.

If need be more even and dry fast, in above-mentioned drying process, control second servo motor 181, the output shaft of second servo motor 181 orders about centre gripping subassembly 17 rotatory, and then drives the dry product rotation of treating on the centre gripping subassembly 17 to be favorable to improving the dry degree of consistency of heating, and be favorable to improving dry speed.

In the drying process, the worker controls the first servo motor 71, the second servo motor 181 and the first cylinder 21 according to actual conditions, and the uniformity of heating and drying and the efficiency of drying are improved.

After drying, open a body 6, control first cylinder 21, the piston rod extension of first cylinder 21 makes holding box 182 remove and be close to protruding 15 along bearing cover 20 for the centre gripping subassembly 17 with treat that dry product is also close to protruding 15, control first servo motor 71 again, make treat that dry product is close to a body 6 in proper order and is taken out by the workman in proper order.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an electric heat constant temperature air blast drying cabinet which characterized in that: the drying box comprises a drying box body (1), a first rotating assembly (7) and a plurality of bearing trays (2), wherein the first rotating assembly (7) is installed in the drying box body (1) and is close to the middle of the drying box body (1), the plurality of bearing trays (2) are connected to the first rotating assembly (7) used for driving the bearing trays (2) to rotate, and the plurality of bearing trays (2) used for placing products to be dried are arranged in a row along the height direction of the drying box body (1);

the drying box comprises a drying box body (1), wherein first air blowers (3) are arranged on the outer top surface and the outer bottom surface of the drying box body (1), air outlets of the first air blowers (3) are communicated with the top or the bottom of the drying box body (1), electric heating plates (4) are arranged on two opposite inner sides of the drying box body (1), second air blowers (5) are arranged on two opposite outer sides of the drying box body (1), the two electric heating plates (4) are respectively close to the two second air blowers (5), the second air blowers (5) are close to the electric heating plates (4) on the same side, and air outlets of the second air blowers (5) are communicated with the side surfaces of the drying box body (1); a constant pressure valve (9) is arranged at the top of the drying box body (1);

the top surface of the bearing tray (2) is provided with a clamping component (17) for clamping a product to be dried, the bottom surface of the bearing tray (2) is connected with a second rotating component (18), and the second rotating component (18) for driving the clamping component (17) to rotate is connected with the bottom of the clamping component (17);

the second rotating assembly (18) comprises a second servo motor (181) and an accommodating box (182), the accommodating box (182) is connected to the bearing tray (2), the second servo motor (181) is connected into the accommodating box (182), the length direction of an output shaft of the second servo motor (181) is perpendicular to the bearing tray (2), the top end of the output shaft of the second servo motor (181) penetrates through the top surface of the accommodating box (182) and is positioned above the bearing tray (2), and the bottom surface of the clamping assembly (17) is connected to the top end of the output shaft of the second servo motor (181);

the bearing tray (2) is provided with a strip-shaped sliding hole (19), one end of the strip-shaped sliding hole (19) is close to the circle center of the bearing tray (2), the other end of the strip-shaped sliding hole (19) is far away from the circle center of the bearing tray (2), a bearing cover (20) is arranged on the bottom surface of the bearing tray (2), the bearing cover (20) is located below the strip-shaped sliding hole (19) and is matched with the strip-shaped sliding hole (19), the accommodating box (182) is connected into the bearing cover (20) in a sliding mode, a first driving piece used for driving the accommodating box (182) to slide along the bearing cover (20) is arranged in the bearing cover (20), the first driving piece is connected with the accommodating box (182), an output shaft of the second servo motor (181) penetrates through the strip-shaped sliding hole (19), and the clamping assembly (17) is located above the strip-shaped sliding hole (19);

the clamping assembly (17) comprises a bearing plate (171), a control screw rod (172) and a clamping strip (173), the bottom surface of the bearing plate (171) is connected to the top end of an output shaft of the second servo motor (181), the top surface of the bearing plate (171) is connected with a blocking frame (22) used for limiting the position of a product to be dried, the blocking frame (22) is parallel to the bearing plate (171), the control screw rod (172) penetrates through one side edge of the blocking frame (22) and is in threaded connection with the blocking frame (22), the clamping strip (173) is slidably connected into the blocking frame (22), the clamping strip (173) is rotatably connected with one end, located in the blocking frame (22), of the control screw rod (172), and the moving direction of the control screw rod (172) during rotation is consistent with the sliding direction of the clamping strip (173);

the first rotating assembly (7) comprises a first servo motor (71) and a support shaft (72), the first servo motor (71) is connected to the bottom surface of the drying box body (1), the support shaft (72) is vertically arranged and is rotatably connected into the drying box body (1), an output shaft of the first servo motor (71) is vertically and upwards arranged and is connected with the bottom end of the support shaft (72), and the plurality of bearing trays (2) are connected to the support shaft (72);

the supporting shaft (72) is provided with a supporting pipe sleeve (11), the supporting trays (2) are sleeved on the supporting pipe sleeve (11) and are in sliding connection with the supporting pipe sleeve (11), a plurality of second driving pieces are arranged in the supporting pipe sleeve (11), and the second driving pieces are respectively connected with the supporting trays (2) and are used for adjusting the positions of the supporting trays (2) on the supporting pipe sleeve (11);

the outer side wall of the supporting pipe sleeve (11) is provided with a plurality of groups of sliding grooves (12), the number of the sliding grooves (12) in the groups is equal to the number of the bearing trays (2), the sliding grooves (12) in the groups are distributed at equal intervals along the length direction of the supporting pipe sleeve (11), the contact parts of the bearing trays (2) and the supporting pipe sleeve (11) are connected with two opposite sliding blocks (13), each group of sliding grooves (12) comprises two opposite sliding grooves (12), the two sliding blocks (13) are respectively connected in the two sliding grooves (12) in the same group in a sliding mode, the number of the second driving parts is equal to the number of the sliding grooves (12), and the second driving parts for driving the sliding blocks (13) to move along the sliding grooves (12) are connected in the sliding grooves (12) and connected with the sliding blocks (13).

2. An electric heating constant temperature air blast drying cabinet according to claim 1, characterized in that: the side of the clamping strip (173) far away from the control screw (172) is connected with a clamping pad (24), and the side of the clamping pad (24) close to the product to be dried is arranged in an arc-shaped surface.

3. An electric heating constant temperature air blast drying cabinet according to claim 1, characterized in that: the bearing plate (2) is provided with a plurality of air holes (25).