Air blast drying box convenient to move

Abstract

The utility model discloses an air blast drying box convenient to move, and relates to the technical field of drying boxes. A plurality of universal wheels are fixedly mounted at the bottom of the main body, a groove is formed in the center of the bottom of the main body, rotating seats are rotationally connected into the groove, rollers are rotationally connected between the inner sides of the rotating seats, one end of a center shaft of each roller extends to the outer side of the corresponding rotating seat and is fixedly connected with a transmission shaft, and a speed limiting cylinder is fixedly connected to one side of each rotating seat. A speed limiting assembly used for limiting the speed of the transmission shaft is arranged in the speed limiting cylinder, an air pipe is arranged on the speed limiting cylinder, an adjusting assembly is arranged on the air pipe, and the adjusting assembly is used for adjusting the speed limiting degree of the speed limiting assembly. By arranging the speed limiting assembly, the rotating speed of the rotating shaft of the roller can be limited, so that when the main body moves on a slope, the speed of the main body can be limited, the main body cannot be too high in speed on the slope, and the safety of the main body is greatly protected.

Description

Technical Field

[0001] The utility model relates to the technical field of drying boxes, in particular to a blast drying box which is easy to move. Background Art

[0002] The forced air drying oven is a drying equipment used in laboratories and industrial production. It circulates hot air evenly in the drying oven through a forced ventilation circulation system to speed up the drying of materials. It is widely used in laboratories, medicine, food, chemical industry and other fields for drying, heating, baking and other processes.

[0003] In the prior art, for the convenience of operation, universal wheels are installed at the bottom of the electric hot air drying oven. However, when fixing the universal wheels, the staff is required to press multiple universal wheels. At the same time, when moving again, the staff is required to press the multiple universal wheels again, which makes it very inconvenient to move the electric hot air drying oven.

[0004] A Chinese patent for an electric constant temperature blast drying box (publication number CN214406758U) that is easy to move is proposed in the prior art to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: the downward movement of the lifting plate will drive the triangular plate to move downward, so that the triangular plate contacts the ground, and the limiting groove and the L-shaped rod cooperate to position the triangular plate after moving downward, so that the triangular plate positions the body of the electric constant temperature blast drying box. Pushing the transmission plate again can make the limiting groove and the L-shaped rod no longer engage, so that the triangular plate no longer contacts the ground, avoiding the trouble of pressing multiple universal wheels to fix the body of the electric constant temperature blast drying box when positioning the body of the electric constant temperature blast drying box through universal wheels, thereby making the movement of the body of the electric constant temperature blast drying box very inconvenient. However, when this technical solution is used to move the blast drying box on a slope, due to the large size of the equipment and the lack of speed limit measures on the universal wheels themselves, a large inertia will be generated, which makes it easy for the main body to collide when moving, thus posing certain safety hazards and urgently needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide a portable blast drying box to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A portable blast drying box comprises a main body; a plurality of universal wheels are fixedly installed at the bottom of the main body, a groove is provided at the central position of the bottom of the main body, a rotating seat is rotatably connected inside the groove, a roller is rotatably connected between the inner sides of the rotating seat, one end of the central axis of the roller extends to the outer side of the rotating seat and is fixedly connected to a transmission shaft, a speed limiting cylinder is fixedly connected to one side of the rotating seat, a speed limiting component for limiting the speed of the transmission shaft is arranged inside the speed limiting cylinder, an air pipe is arranged on the speed limiting cylinder, an adjusting component is arranged on the air pipe, and the adjusting component is used to adjust the speed limiting degree of the speed limiting component.

[0008] By adopting the above technical solution, the rotation speed of the roller shaft can be limited by setting a speed limiting component, so that when the main body moves on a slope, its speed can be limited, so that the main body will not move too fast on the slope, thereby greatly protecting the safety of the main body.

[0009] A further improvement of the technical solution of the utility model is that: the speed limiting assembly includes a piston plate, the piston plate is slidably connected between the inner walls of the speed limiting cylinder, a fixing frame is fixedly connected between the inner walls of the speed limiting cylinder, a plurality of guide rods are slidably connected to one side of the fixing frame, one end of the guide rod is fixedly connected to the piston plate, one end of the guide rod extends away from the piston plate to the other side of the fixing frame and is fixedly connected to an annular block, the annular block is slidably connected to the transmission shaft, a spiral groove is provided on the outer side of the transmission shaft, a transmission buckle is fixedly connected to the inner side of the annular block, and the transmission buckle is slidably connected to the spiral groove.

[0010] By adopting the above technical solution, the transmission shaft is rotated and the transmission is carried out through the spiral groove and the transmission buckle, thereby driving the annular block to perform reciprocating motion, and the piston plate is driven to perform piston motion in the speed limiting cylinder through the guide rod.

[0011] A further improvement of the technical solution of the utility model is that the speed limiting component includes a sleeve, the inner wall of the sleeve is provided with threads, the outer side of the air pipe is also provided with threads, the sleeve is threadedly connected to the outer side of the air pipe, and the air pipe is provided with a strip groove communicating with the interior.

[0012] By adopting the above technical solution, the sleeve is rotated to change the length of the exposed area of ​​the strip groove, so that the release speed of the air pressure in the speed limit cylinder can be changed, thereby achieving the adjustment of the speed limit degree.

[0013] A further improvement of the technical solution of the utility model is that a sealing ring is fixedly connected to one side of the speed limit cylinder, and the sealing ring is used in conjunction with the sleeve.

[0014] By adopting the above technical solution, the sleeve is completely screwed on so that one end of the sleeve contacts the speed limiting cylinder and the outer side of the sleeve fits tightly against the inner wall of the sealing ring, thereby preventing the piston plate in the speed limiting cylinder from moving under the action of air pressure.

[0015] A further improvement of the technical solution of the utility model is that a filter screen is arranged inside the air pipe.

[0016] The above technical solution is adopted to prevent external dust and other impurities from entering the speed limit cylinder.

[0017] A further improvement of the technical solution of the utility model is that: one end surface of the sleeve is fixedly connected with a knob.

[0018] By adopting the above technical solution, it is convenient to control the rotation of the sleeve through the knob.

[0019] A further improvement of the technical solution of the utility model is that the bottom of the roller and the bottom of the universal wheel are at the same height in the vertical direction.

[0020] By adopting the above technical solution, the universal wheels and the rollers can support the ground during the movement or placement of the main body, so as to facilitate speed limiting or braking.

[0021] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0022] 1. The utility model provides a portable blast drying box. By setting a speed limiting component, the rotation speed of the rotating shaft of the roller can be limited, so that when the main body moves on a slope, its speed can be limited, so that the main body will not move too fast on the slope, which greatly protects the safety of the main body.

[0023] 2. The utility model provides a blast drying box that is easy to move. By setting an adjustment component, when the speed limit degree needs to be adjusted, the sleeve is rotated to change the length of the exposed area of ​​the strip groove, so that the release speed of the air pressure in the speed limit cylinder can be changed, thereby realizing the adjustment of the speed limit degree. When the main body does not need to move, the sleeve is completely screwed on so that one end of the sleeve contacts the speed limit cylinder, and the outer side of the sleeve is tightly fitted with the inner wall of the sealing ring, so that the piston plate in the speed limit cylinder cannot move under the action of the air pressure, and the roller is stuck, and the main body cannot move. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the installation structure of the speed limiting cylinder of the utility model;

[0027] Figure 3 This is one of the cross-sectional schematic diagrams of the speed limiter of the utility model;

[0028] Figure 4This is the second schematic cross-sectional view of the speed limiter of the utility model;

[0029] Figure 5 For this utility model Figure 3 Enlarged view of point A in the middle;

[0030] In the figure: 1. main body; 2. universal wheel; 3. groove; 4. rotating seat; 5. roller; 7. speed limit cylinder; 8. piston plate; 9. transmission shaft; 10. air pipe; 11. strip groove; 12. sleeve; 13. knob; 14. sealing ring; 15. fixing frame; 16. guide rod; 17. ring block; 18. spiral groove; 19. transmission buckle. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the embodiments:

[0032] Example 1

[0033] like Figure 1 and Figure 2 As shown, the utility model provides a portable blast drying box, comprising a main body 1; a plurality of universal wheels 2 are fixedly installed at the bottom of the main body 1, a groove 3 is opened at the central position of the bottom of the main body 1, the interior of the groove 3 is rotatably connected with a rotating seat 4, the inner side of the rotating seat 4 is rotatably connected with a roller 5, one end of the central axis of the roller 5 extends to the outer side of the rotating seat 4 and is fixedly connected with a transmission shaft 9, one side of the rotating seat 4 is fixedly connected with a speed limiting cylinder 7, a speed limiting assembly for limiting the speed of the transmission shaft 9 is arranged inside the speed limiting cylinder 7, an air pipe 10 is arranged on the speed limiting cylinder 7, an adjusting assembly is arranged on the air pipe 10, and the adjusting assembly is used to adjust the speed limiting degree of the speed limiting assembly.

[0034] In this embodiment, by setting a speed limiting component, the rotation speed of the rotating shaft of the roller 5 can be limited, so that when the main body 1 moves on a slope, its speed can be limited, so that the speed of the main body 1 will not be too fast on the slope, thereby greatly protecting the safety of the main body 1.

[0035] Example 2

[0036] like Figure 3 and Figure 4As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the speed limiting assembly includes a piston plate 8, the piston plate 8 is slidably connected between the inner walls of the speed limiting cylinder 7, a fixing frame 15 is fixedly connected between the inner walls of the speed limiting cylinder 7, a plurality of guide rods 16 are slidably connected to one side of the fixing frame 15, one end of the guide rod 16 is fixedly connected to the piston plate 8, the guide rod 16 extends from one end of the piston plate 8 to the other side of the fixing frame 15 and is fixedly connected to an annular block 17, the annular block 17 is slidably connected to the transmission shaft 9, a spiral groove 18 is provided on the outer side of the transmission shaft 9, a transmission buckle 19 is fixedly connected to the inner side of the annular block 17, and the transmission buckle 19 is slidably connected to the spiral groove 18.

[0037] In this embodiment, the transmission shaft 9 is rotated and the transmission is performed through the spiral groove 18 and the transmission buckle 19, thereby driving the annular block 17 to perform reciprocating motion, and driving the piston plate 8 to perform piston motion in the speed limiting cylinder 7 through the guide rod 16.

[0038] like Figure 4 and Figure 5 As shown, preferably, the speed limiting assembly includes a sleeve 12, the inner wall of the sleeve 12 is provided with threads, the outer side of the air pipe 10 is also provided with threads, the sleeve 12 is threadedly connected to the outer side of the air pipe 10, and the air pipe 10 is provided with a strip groove 11 communicating with the interior.

[0039] In this embodiment, by rotating the sleeve 12 to change the length of the exposed area of ​​the strip groove 11, the release speed of the air pressure in the speed limiting cylinder 7 can be changed, thereby adjusting the speed limit degree.

[0040] like Figure 4 and Figure 5 As shown, preferably, a sealing ring 14 is fixedly connected to one side of the speed limiting cylinder 7 , and the sealing ring 14 is used in conjunction with the sleeve 12 .

[0041] In this embodiment, when the main body 1 does not need to move, the sleeve 12 is completely screwed on so that one end of the sleeve 12 contacts the speed limiting cylinder 7, and the outer side of the sleeve 12 fits tightly against the inner wall of the sealing ring 14, thereby preventing the piston plate 8 in the speed limiting cylinder 7 from moving under the action of air pressure.

[0042] Preferably, a filter screen is provided inside the air pipe 10 .

[0043] In this embodiment, foreign matter such as external dust is prevented from entering the speed limiting cylinder 7 .

[0044] like Figure 4 and Figure 5 As shown, preferably, one end surface of the sleeve 12 is fixedly connected with a knob 13 .

[0045] In this embodiment, the rotation of the sleeve 12 is conveniently controlled by the knob 13 .

[0046] Preferably, the bottom of the roller 5 and the bottom of the universal wheel 2 are at the same height in the vertical direction.

[0047] In this embodiment, the universal wheels 2 and the rollers 5 can support the ground during the movement or placement of the main body 1, so as to facilitate speed limiting or braking.

[0048] The following is a detailed description of the working principle of this portable blast drying oven.

[0049] like Figure 1-5 As shown, during the movement of the main body 1, the universal wheel 2 and the roller 5 both support the ground. When moving at a lower speed on a flat ground, the transmission shaft 9 rotates along with the rolling of the roller 5, and transmits through the spiral groove 18 and the transmission buckle 19, thereby driving the annular block 17 to make a reciprocating motion, and driving the piston plate 8 to make a piston motion in the speed limiting cylinder 7 through the guide rod 16. Under normal conditions, the sleeve 12 and the air pipe 10 are in an incompletely screwed-on state, that is, there is a partial area of ​​the strip groove 11 so that the air pipe 10 can communicate with the external environment, so that when the piston plate 8 makes a piston motion, the external air can enter and be discharged, and the movement of the piston plate 8 will not be blocked;

[0050] When the main body 1 is on a slope or has a high speed due to other reasons, during the piston movement of the piston plate 8, the bar groove 11 is only partially connected to the outside, so the air pressure in the speed limiter 7 cannot be released immediately, so that the air pressure prevents the piston plate 8 from moving, limits its movement speed, and thus limits the rotation speed of the roller 5, so that the main body 1 will not move too fast on the slope, which greatly protects the safety of the main body 1;

[0051] By rotating the sleeve 12, the length of the exposed area of ​​the strip groove 11 changes, and the release speed of the air pressure in the speed limiting cylinder 7 can be changed, so as to adjust the speed limit degree;

[0052] When the main body 1 is working, it does not need to be moved. By completely screwing on the sleeve 12, one end of the sleeve 12 is in contact with the speed limiting cylinder 7, and the outer side of the sleeve 12 is tightly fitted with the inner wall of the sealing ring 14, so that the piston plate 8 in the speed limiting cylinder 7 cannot move under the action of air pressure, and the roller 5 is stuck, and the main body 1 cannot move (it is in a locked state and cannot move without slipping).

[0053] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A portable blast drying oven, comprising a main body (1); Features: A plurality of universal wheels (2) are fixedly mounted on the bottom of the main body (1); a groove (3) is provided at the central position of the bottom of the main body (1); a rotating seat (4) is rotatably connected inside the groove (3); a roller (5) is rotatably connected between the inner sides of the rotating seat (4); one end of the central axis of the roller (5) extends to the outer side of the rotating seat (4) and is fixedly connected to a transmission shaft (9); a speed limiting cylinder (7) is fixedly connected to one side of the rotating seat (4); a speed limiting component for limiting the speed of the transmission shaft (9) is provided inside the speed limiting cylinder (7); an air pipe (10) is provided on the speed limiting cylinder (7); an adjustment component is provided on the air pipe (10); the adjustment component is used to adjust the speed limiting degree of the speed limiting component.

2. A portable blast drying oven according to claim 1, Features: The speed limiting assembly comprises a piston plate (8), wherein the piston plate (8) is slidably connected between the inner walls of the speed limiting cylinder (7), a fixing frame (15) is fixedly connected between the inner walls of the speed limiting cylinder (7), a plurality of guide rods (16) are slidably connected to one side of the fixing frame (15), one end of the guide rod (16) is fixedly connected to the piston plate (8), one end of the guide rod (16) is away from the piston plate (8) and extends to the other side of the fixing frame (15) and is fixedly connected to an annular block (17), the annular block (17) is slidably connected to a transmission shaft (9), a spiral groove (18) is provided on the outer side of the transmission shaft (9), a transmission buckle (19) is fixedly connected to the inner side of the annular block (17), and the transmission buckle (19) is slidably connected to the spiral groove (18).

3. A portable blast drying oven according to claim 2, Features: The speed limiting assembly comprises a sleeve (12), the inner wall of the sleeve (12) is provided with a thread, the outer side of the air pipe (10) is also provided with a thread, the sleeve (12) is threadedly connected to the outer side of the air pipe (10), and the air pipe (10) is provided with a strip groove (11) communicating with the interior.

4. A portable blast drying oven according to claim 3, Features: A sealing ring (14) is fixedly connected to one side of the speed limiting cylinder (7), and the sealing ring (14) is used in conjunction with the sleeve (12).

5. A portable blast drying oven according to claim 4, Features: A filter screen is arranged inside the air pipe (10).

6. A portable blast drying oven according to claim 5, Features: One end surface of the sleeve (12) is fixedly connected with a knob (13).

7. A portable blast drying oven according to claim 1, Features: The bottom of the roller (5) and the bottom of the universal wheel (2) are at the same height in the vertical direction.

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