Drying oven for drying mandelic acid

Abstract

The utility model relates to the technical field of mandelic acid production and processing equipment, and discloses a drying oven for drying mandelic acid, which comprises an oven body, a mounting table fixed at the lower part in the oven body, a mounting groove formed in the top of the mounting table, a barrel fixed in the mounting groove, a rotating shaft rotationally connected with the middle position in the barrel, and a rotating shaft connected with the rotating shaft, a plurality of scrapers are fixed outside the rotating shaft, and a motor is mounted at the bottom of one side, corresponding to the rotating shaft, in the box body. According to the crystal air-drying device, air is blown into the box body through the air heater, hot air generated by the air heater can be guided into the barrel through the arranged aeration assembly, the hot air is directly blown to the surfaces of crystals, heat loss is reduced, meanwhile, the air guide pipes and the air distribution pipes are evenly arranged, the hot air can be evenly blown to the crystals, and the air-drying effect is better; the motor rotates the rotating shaft and drives the scraping plate to rotate synchronously to stir mandelic acid crystals in the barrel, so that the mandelic acid crystals can be in full contact with hot air, and drying of the crystals is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of mandelic acid production and processing equipment, in particular to an oven used for drying mandelic acid. Background Art

[0002] Mandelic acid, also known as mandelic acid, is a white rhombic flaky crystal. The melting point is 119°C. It is easily soluble in hot water, ether, isopropanol and ethanol. Exposure for too long will cause discoloration and decomposition. It can be prepared by the reaction of benzaldehyde and dibromoacetophenone. It is used in organic synthesis and is a special reagent for the determination of zirconium. Mandelic acid is a toxic compound. Excessive intake may cause poisoning. Care should be taken to avoid contact with the skin and eyes. Common preparation methods for mandelic acid include benzaldehyde phase transfer method, benzaldehyde phase transfer method and benzene-glyoxylic acid method. The benzene-glyoxylic acid method requires precipitation and concentration of the filtrate during the production process, and then filtering out the particulate matter, and then washing the crystals with water, and finally drying to obtain the product.

[0003] For example, publication number CN219347210U discloses a drying device for mandelic acid production, comprising a drying device; a set of No. 1 fixed columns are fixedly connected to the side wall in the middle of the drying device; a set of No. 1 fixed columns are rotatably connected to a No. 1 rotating rod in the middle; a set of No. 1 rotating rod side walls are fixedly connected to a No. 1 stopper plate; a set of No. 1 stopper plate side walls are fixedly connected to a No. 2 rotating rod. The device lifts up the mandelic acid crystals on the surface of the ventilation plate through the coordinated use of the No. 2 rotating rod, the No. 2 fixed column, the No. 1 fixed column, the No. 1 rotating rod, etc., for air drying.

[0004] The above device manually lifts up the mandelic acid crystals for air drying, which is inefficient. At the same time, mandelic acid is a toxic compound, and there are certain risks in manual operation. Now, an oven for drying mandelic acid that does not require manual operation, has high drying efficiency, and is safer to use is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide an oven for drying mandelic acid to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A drying oven for drying mandelic acid comprises a box body, a mounting platform is fixed at the lower part of the box body, a mounting groove is provided on the top of the mounting platform, a barrel is fixed in the mounting groove, a rotating shaft is rotatably connected to the middle position inside the barrel, a plurality of scrapers are fixed to the outside of the rotating shaft, a motor is installed at the bottom of the box body corresponding to one side of the rotating shaft, one end of the motor output shaft is fixedly connected to one end of the rotating shaft through a coupling; an exhaust fan and a hot air blower are respectively arranged on both sides of the box body, one end of the exhaust fan air inlet pipe and one end of the hot air blower air outlet pipe are both inserted into the box body; an aeration component is embedded and fixed inside the barrel.

[0008] As a further solution of the utility model: the aeration assembly includes an annular tube, which is embedded and fixed at the bottom of the barrel, and a plurality of air guide tubes are fixed on the annular tube, and the plurality of air guide tubes are embedded and fixed on the side wall of the barrel, and a plurality of distribution air pipes are fixed on one side of the plurality of air guide tubes close to the middle position of the barrel.

[0009] As a further solution of the utility model: one end of multiple distribution air pipes passes through the side wall of the barrel and extends to the interior of the barrel, and one end of multiple distribution air pipes is flush with the curved surface of the side wall of the barrel, and a filter is fixed in the opening of one end of multiple distribution air pipes.

[0010] As a further solution of the utility model: an air inlet pipe is fixed to one side of the annular tube, one end of the air inlet pipe passes through the inner wall of the barrel and extends to the outside of the barrel, and one end of the air inlet pipe is fixedly connected to one end of the hot air blower outlet pipe.

[0011] As a further solution of the utility model: activated carbon adsorption material is arranged in the air inlet pipe of the exhaust fan and the air inlet pipe of the hot air blower.

[0012] As a further solution of the utility model: the top of the box body is provided with an opening and a box cover is clamped in the opening; the top of the barrel is provided with an opening and a barrel cover is clamped in the opening.

[0013] As a further solution of the utility model: a plurality of through holes are provided on the inner wall of the drum and the inner wall of the barrel cover, and filter screens are fixed in the plurality of through holes.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. In the utility model, the mandelic acid crystals to be dried are poured into a drum and the lid is closed, and the hot air blower is started to blow air into the box body. The hot air flows into the inside of the drum from the through holes on the surface of the drum to air-dry the mandelic acid crystals inside. At the same time, the exhaust fan is started to extract the humid air inside the box body to the outside, thereby accelerating the air convection inside the box body and improving the drying efficiency of the mandelic acid crystals. The activated carbon adsorption material arranged in the air inlet pipe of the hot air blower and the air inlet pipe of the exhaust fan can filter the air in and out of the box body to prevent the mandelic acid crystals from being contaminated. At the same time, the mandelic acid crystals can be prevented from flowing into the air to pollute the environment and protect the health of users.

[0016] 2. In the utility model, the motor is started to rotate the shaft and drive the scraper to rotate synchronously, so as to stir the mandelic acid crystals inside the drum so that they can fully contact with the hot air, thereby accelerating the drying of the crystals.

[0017] 3. In the utility model, the hot air generated by the hot air blower can be introduced into the drum through the aeration component, so that the hot air can be directly blown to the surface of the crystal to reduce heat loss. At the same time, the air guide pipe and the distribution air pipe are evenly arranged, so the hot air can be evenly blown to the crystal, and the air drying effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is an exploded view of the utility model.

[0021] Figure 3 It is an expanded view of the drum and the scraper in the utility model.

[0022] Figure 4 It is an expanded view of the drum and aeration assembly in the utility model.

[0023] Figure 5 It is a structural schematic diagram of the aeration component in the utility model.

[0024] Notes on figure numbers: 1-box cover, 2-box body, 3-exhaust fan, 4-hot air blower, 5-barrel cover, 6-barrel, 7-mounting table, 8-motor, 9-rotating shaft, 10-scraper, 11-through hole, 12-mounting groove, 13-aeration assembly, 131-annular pipe, 132-air guide pipe, 133-distribution air pipe, 134-inlet pipe. DETAILED DESCRIPTION

[0025] The following embodiments will be combined with the accompanying drawings to describe the utility model in detail. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component can be enlarged or reduced. The various embodiments listed in the utility model are only used to illustrate the utility model, and are not used to limit the scope of the utility model. Any obvious modifications or changes made to the utility model do not depart from the spirit and scope of the utility model.

[0026] Example 1

[0027] See also Figure 1 In an embodiment of the utility model, an oven for drying mandelic acid comprises a box body 2, an opening is provided on the top of the box body 2 and a box cover 1 is clamped in the opening, an exhaust fan 3 and a hot air blower 4 are respectively provided on both sides of the box body 2, one end of the air inlet pipe of the exhaust fan 3 and one end of the air outlet pipe of the hot air blower 4 are both inserted into the box body 2, and activated carbon adsorption materials are provided in the air inlet pipe of the exhaust fan 3 and the air inlet pipe of the hot air blower 4.

[0028] See also Figure 2 , Figure 3 A mounting platform 7 is fixed at the lower part of the box body 2, a mounting groove 12 is provided on the top of the mounting platform 7, a barrel 6 is fixed in the mounting groove 12, an opening is provided on the top of the barrel 6 and a barrel cover 5 is clamped in the opening, a plurality of through holes 11 are provided on the inner wall of the barrel 6 and the inner wall of the barrel cover 5, and filters are fixed in the plurality of through holes 11, a rotating shaft 9 is rotatably connected to the middle position inside the barrel 6, a plurality of scrapers 10 are fixed to the outside of the rotating shaft 9, a motor 8 is installed at the bottom of the box body 2 corresponding to one side of the rotating shaft 9, and one end of the output shaft of the motor 8 is fixedly connected to one end of the rotating shaft 9 through a coupling.

[0029] Example 2

[0030] Based on Example 1, please refer to Figure 4 , Figure 5An aeration assembly 13 is embedded and fixed inside the barrel 6. The aeration assembly 13 includes an annular tube 131, which is embedded and fixed at the bottom of the barrel 6. A plurality of air guide pipes 132 are fixed on the annular tube 131. The plurality of air guide pipes 132 are embedded and fixed on the side wall of the barrel 6. A plurality of distribution air pipes 133 are fixed on one side of the plurality of air guide pipes 132 near the middle position of the barrel 6. One end of the plurality of distribution air pipes 133 passes through the side wall of the barrel 6 and extends to the interior of the barrel 6. One end of the plurality of distribution air pipes 133 is flush with the arc surface of the side wall of the barrel 6. Filters are fixed in the openings at one end of the plurality of distribution air pipes 133. An air inlet pipe 134 is fixed on one side of the annular tube 131. One end of the air inlet pipe 134 passes through the inner wall of the barrel 6 and extends to the outside of the barrel 6. One end of the air inlet pipe 134 is fixedly connected to one end of the air outlet pipe of the hot air blower 4.

[0031] Working principle: When in use, pour the mandelic acid crystals to be dried into the barrel 6 and close the lid, start the hot air blower 4 to blow air into the box 2, and the hot air flows into the barrel from the through holes 11 on the surface of the barrel 6 to air-dry the mandelic acid crystals inside. At the same time, start the exhaust fan 3 to extract the humid air inside the box 2 to the outside, accelerate the air convection inside the box, and improve the drying efficiency of the mandelic acid crystals. The activated carbon adsorption material set in the air inlet pipe of the hot air blower 4 and the air inlet pipe of the exhaust fan 3 can filter the air in and out of the box to prevent the mandelic acid crystals from being contaminated. At the same time, it can also prevent mandelic acid crystals from flowing into the air to pollute the environment and protect the health of users; by starting the motor 8 to rotate the shaft 9 and driving the scraper 10 to rotate synchronously, the mandelic acid crystals inside the barrel 6 are stirred so that they can fully contact with the hot air and accelerate the drying of the crystals; further, the aeration component 13 is set to guide the hot air generated by the hot air blower 4 into the barrel 6, so that the hot air is directly blown onto the surface of the crystal to reduce heat loss. At the same time, the air guide pipe 132 and the distribution air pipe 133 are evenly arranged, so that the hot air can be evenly blown to the crystal, and the air drying effect is better.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An oven for drying mandelic acid, comprising a housing (2), characterized in that: A mounting platform (7) is fixed at the lower part of the box body (2), a mounting groove (12) is provided at the top of the mounting platform (7), a round barrel (6) is fixed in the mounting groove (12), a rotating shaft (9) is rotatably connected to the middle position of the round barrel (6), a plurality of scrapers (10) are fixed to the outside of the rotating shaft (9), a motor (8) is installed at the bottom of the box body (2) corresponding to one side of the rotating shaft (9), one end of the output shaft of the motor (8) is fixedly connected to one end of the rotating shaft (9) through a coupling; an exhaust fan (3) and a hot air blower (4) are respectively provided on both sides of the box body (2), one end of the air inlet pipe of the exhaust fan (3) and one end of the air outlet pipe of the hot air blower (4) are both inserted into the box body (2); an aeration component (13) is embedded and fixed in the inside of the round barrel (6).

2. The oven for drying mandelic acid according to claim 1, characterized in that The aeration assembly (13) comprises an annular tube (131), the annular tube (131) being embedded and fixed at the bottom of the barrel (6), a plurality of air guide tubes (132) being fixed on the annular tube (131), the plurality of air guide tubes (132) being embedded and fixed on the side wall of the barrel (6), and a plurality of distribution air tubes (133) being fixed on one side of the plurality of air guide tubes (132) close to the middle of the barrel (6).

3. The oven for drying mandelic acid according to claim 2, characterized in that One end of each of the plurality of distribution air pipes (133) passes through the side wall of the barrel (6) and extends to the interior of the barrel (6), and one end of each of the plurality of distribution air pipes (133) is flush with the arc surface of the side wall of the barrel (6), and a filter is fixed in the opening at one end of each of the plurality of distribution air pipes (133).

4. The oven for drying mandelic acid according to claim 3, characterized in that An air inlet pipe (134) is fixed to one side of the annular tube (131), one end of the air inlet pipe (134) passes through the inner wall of the barrel (6) and extends to the outside of the barrel (6), and one end of the air inlet pipe (134) is fixedly connected to one end of the air outlet pipe of the hot air blower (4).

5. The oven for drying mandelic acid according to claim 1 or 4, characterized in that: Activated carbon adsorption material is provided in the air inlet pipe of the exhaust fan (3) and the air inlet pipe of the hot air blower (4).

6. The oven for drying mandelic acid according to claim 5, characterized in that The top of the box body (2) is provided with an opening, and a box cover (1) is clamped in the opening; the top of the barrel (6) is provided with an opening, and a barrel cover (5) is clamped in the opening.

7. The oven for drying mandelic acid according to claim 6, characterized in that: A plurality of through holes (11) are provided on the inner wall of the drum (6) and the inner wall of the drum cover (5), and filter screens are fixed in the plurality of through holes (11).

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