Vanilic acid purification device

Abstract

The invention discloses a vanillic acid purification device, which belongs to the field of purification devices and comprises a box body, a first filter membrane and a second filter membrane are arranged in the box body, and the space is divided into a first filter space, a second filter space and a vacuum refrigeration space. The box body is connected with a negative pressure fan, a first exhaust pipe, a second exhaust pipe and a third exhaust pipe are arranged at the exhaust end of the negative pressure fan, a first air outlet pipe, a second air outlet pipe and a third air outlet pipe are correspondingly arranged at the air outlet end of the negative pressure fan, and the exhaust pipes and the air outlet pipes are communicated with the corresponding spaces respectively and provided with electromagnetic valves. Vanillic acid is transferred to the vacuum refrigeration space from the first filtering space through the second filtering space; according to the vanillic acid purification device, the multiple layers of filter membranes and the negative-pressure air duct are utilized, efficient and automatic purification of a vanillic acid crude product is achieved, the flowing path of vanillic acid in the device is accurately regulated and controlled by accurately controlling the negative-pressure fan and all the electromagnetic valves, and the purification efficiency and purity are remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of purification devices, in particular to a vanillic acid purification device. Background Art

[0002] As an important organic acid, vanillic acid is widely used in food, spices, medicine and other fields. In the traditional preparation process of vanillic acid, it is usually extracted from natural plant resources, such as black sesame skin. However, vanillic acid extracted from raw materials often contains more impurities and needs to be purified to obtain a high-purity product.

[0003] Most existing methods for purifying vanillic acid use a multi-step filtration and drying process. In the filtration stage, the crude vanillic acid is usually filtered on a filter membrane to remove solid impurities. However, this step often requires manual operation, which is not only inefficient, but also easily affected by human factors, resulting in poor purification results. Summary of the invention

[0004] The purpose of the present invention is to provide a vanillic acid purification device to solve the problems of inconvenience and low efficiency of manual operation.

[0005] To achieve the above object, the present invention provides the following technical solution: a vanillic acid purification device, comprising a box body, wherein a first filter membrane and a second filter membrane are connected in a vertical direction within the box body, wherein the first filter membrane and the second filter membrane divide the internal space of the box body into a first filter space, a second filter space and a vacuum refrigeration space;

[0006] The outer wall of the box body is connected to a negative pressure fan, the suction end of the negative pressure fan is connected to the first suction pipe, the second suction pipe and the third suction pipe, the outlet end of the negative pressure fan is connected to the first outlet pipe, the second outlet pipe and the third outlet pipe, the first suction pipe and the first outlet pipe are respectively connected to the second filter space and the first filter space, the second suction pipe and the second outlet pipe are respectively connected to the vacuum refrigeration space and the second filter space, the third suction pipe and the third outlet pipe are respectively connected to the vacuum refrigeration space and the external space of the box body;

[0007] The first exhaust pipe, the second exhaust pipe, the third exhaust pipe, the first air outlet pipe, the second air outlet pipe and the third air outlet pipe are all provided with solenoid valves, and the solenoid valves from the first exhaust pipe and the first air outlet pipe to the second exhaust pipe and from the second air outlet pipe to the third exhaust pipe and the third air outlet pipe are opened in sequence, so that the vanillic acid moves from the first filtration space to the vacuum refrigeration space.

[0008] Preferably, a first installation frame and a second installation frame are connected in the housing, and the first filter membrane and the second filter membrane are connected to the first installation frame and the second installation frame respectively.

[0009] Preferably, the bottoms of the first installation frame and the second installation frame are both connected to a shell, the middle of the shell is connected to a discharge pipe, and the first exhaust pipe and the second exhaust pipe are respectively connected to the internal spaces of the two shells.

[0010] Preferably, the ports of the two discharge pipes are connected to a slide seat, a blocking plate is slidably connected inside the slide seat, and the outer wall of the box body is connected to two cylinders, and the output ends of the two cylinders are respectively connected to the blocking plate.

[0011] Preferably, the first exhaust pipe, the first outlet pipe, the second exhaust pipe and the second outlet pipe are all connected with voltage-stabilizing tubes, the connection points of the voltage-stabilizing tubes are located between the corresponding solenoid valves and the box body, and pressure valves are provided on the four voltage-stabilizing tubes.

[0012] Preferably, a tray is placed in the vacuum refrigeration space, a refrigerator is provided at the bottom of the vacuum refrigeration space, and the tray is located on the upper part of the refrigerator.

[0013] Preferably, a cylinder is connected to the outer wall of the box body, a piston plate is slidably connected inside the cylinder, a ring is provided at the port of the cylinder close to the vacuum refrigeration space, a push rod is fixedly connected to the piston plate, and a spring is sleeved on the push rod;

[0014] A slide is connected to the vacuum refrigeration space in a transverse sliding manner and a pressure frame is connected to the vacuum refrigeration space in a longitudinal sliding manner. The end of the push rod is fixedly connected to the slide. A connecting rod is hinged at the lower part of the slide. The connecting rod is hinged to the pressure frame. When the vacuum degree in the vacuum refrigeration space increases, the piston plate slides toward the vacuum refrigeration space to drive the pressure frame to press down on the tray.

[0015] Preferably, a scraper is provided at the lower part of the press frame, and the scraper slides on the press frame via an electric slider.

[0016] Preferably, a door is provided on the side of the vacuum refrigeration space.

[0017] Preferably, a box cover is provided on the top of the box body, and a drainage cover is connected to the upper port of the box body.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention pours the crude vanillic acid prepared from black sesame skin onto the first filter membrane, then starts the negative pressure fan, controls the electromagnetic valves on the first exhaust pipe and the first outlet pipe to open, and closes the others. At this time, the first exhaust pipe extracts the air in the lower space of the first filter membrane and sends the air to the upper part of the first filter membrane through the first outlet pipe, so that the upper part of the first filter membrane generates positive pressure and the lower part generates negative pressure, so that the crude vanillic acid can be quickly filtered by the first filter membrane. When the vanillic acid is filtered by the first filter membrane and flows to the upper part of the second filter membrane, the second exhaust pipe and the first outlet pipe are controlled to open. The solenoid valves on the second air outlet duct are opened, and the other solenoid valves are closed, thereby generating positive pressure on the upper part of the second filter membrane and negative pressure on the lower part, so that the vanillic acid can quickly pass through the second filter membrane to reach the vacuum refrigeration space, and then the solenoid valves of the third exhaust duct and the third air outlet duct are controlled to open, and the others are closed, so that negative pressure is generated in the vacuum refrigeration space, and the freeze-drying of the vanillic acid is completed in combination with the low temperature inside, and finally the purification of the vanillic acid is completed, so that the crude vanillic acid prepared from black sesame skin can be purified without manual transfer, thereby greatly improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a cross-sectional view of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the housing of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the negative pressure fan of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the press frame of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the scraper of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the push rod of the present invention.

[0027] In the figure: 1, box body; 11, box cover; 12, drainage hood; 13, first filter space; 14, second filter space; 15, vacuum refrigeration space; 2, first installation frame; 21, first filter membrane; 3, second installation frame; 31, second filter membrane; 4, cylinder; 41, shell; 42, discharge pipe; 43, slide seat; 44, blocking plate; 5, negative pressure fan; 51, first exhaust pipe; 511, first outlet pipe; 52, second exhaust pipe; 521, second outlet pipe; 53, third exhaust pipe; 531, third outlet pipe; 54, voltage-stabilizing pipe; 55, pressure valve; 6, box door; 61, tray; 62, pressure rack; 621, scraper; 63, slide; 631, connecting rod; 64, cylinder; 65, push rod; 66, piston plate; 67, spring; 68, ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Reference Figure 1-Figure 7 The present embodiment provides a technical solution: a vanillic acid purification device, comprising a housing 1, wherein a first filter membrane 21 and a second filter membrane 31 are connected in a vertical direction inside the housing 1, and the first filter membrane 21 and the second filter membrane 31 divide the internal space of the housing 1 into a first filter space 13, a second filter space 14 and a vacuum refrigeration space 15; a negative pressure fan 5 is connected to an outer wall of the housing 1, and an exhaust end of the negative pressure fan 5 is connected to a first exhaust pipe 51, a second exhaust pipe 52 and a third exhaust pipe 53, and an outlet end of the negative pressure fan 5 is connected to a first outlet pipe 511, a second outlet pipe 521 and a third outlet pipe 531, and the first exhaust pipe 51 and the first outlet pipe 511 are connected to the second filter space 14 and the third filter space 15, respectively. A filter space 13, the second exhaust pipe 52 and the second air outlet pipe 521 are respectively connected to the vacuum refrigeration space 15 and the second filter space 14, the third exhaust pipe 53 and the third air outlet pipe 531 are respectively connected to the vacuum refrigeration space 15 and the external space of the box body 1; the first exhaust pipe 51, the second exhaust pipe 52, the third exhaust pipe 53, the first air outlet pipe 511, the second air outlet pipe 521 and the third air outlet pipe 531 are all provided with solenoid valves, and the solenoid valves of the first exhaust pipe 51 and the first air outlet pipe 511 to the second exhaust pipe 52 and the second air outlet pipe 521 and the third exhaust pipe 53 and the third air outlet pipe 531 are opened in sequence, so that vanillic acid moves from the first filter space 13 to the vacuum refrigeration space 15.

[0030] When in use, the crude vanillic acid prepared from black sesame skin is poured onto the first filter membrane 21, and then the negative pressure fan 5 is started, and the electromagnetic valves on the first exhaust pipe 51 and the first outlet pipe 511 are controlled to be opened, and the others are closed. At this time, the first exhaust pipe 51 extracts the air from the lower space of the first filter membrane 21 and sends the air to the upper part of the first filter membrane 21 through the first outlet pipe 511, so that the upper part of the first filter membrane 21 generates positive pressure and the lower part generates negative pressure, so that the crude vanillic acid can be quickly filtered by the first filter membrane 21. When the vanillic acid is filtered by the first filter membrane 21 and flows to At the upper part of the second filter membrane 31, the solenoid valves on the second exhaust pipe 52 and the second outlet pipe 521 are controlled to be opened, and the other solenoid valves are closed, so that positive pressure is generated on the upper part of the second filter membrane 31 and negative pressure is generated on the lower part, so that the vanillic acid can quickly pass through the second filter membrane 31 and reach the vacuum refrigeration space 15, and then the solenoid valves on the third exhaust pipe 53 and the third outlet pipe 531 are controlled to be opened, and the others are closed, so that negative pressure is generated in the vacuum refrigeration space 15, and the freeze-drying of the vanillic acid is completed in combination with the low temperature inside, and finally the purification of the vanillic acid is completed;

[0031] Through the above arrangement, the crude vanillic acid prepared from black sesame peel can be purified without manual transfer, which greatly improves the processing efficiency.

[0032] A first installation frame 2 and a second installation frame 3 are connected in the box body 1 , and a first filter membrane 21 and a second filter membrane 31 are connected to the first installation frame 2 and the second installation frame 3 , respectively.

[0033] The arrangement of the first installation frame 2 and the second installation frame 3 enables the first filter membrane 21 and the second filter membrane 31 to be installed and fixed, and the first filter membrane 21 plays the role of ultrafiltration and fine filtration, and the second filter membrane 31 plays the role of nanofiltration. After two filtrations, the vanillic acid is basically free of impurities. In addition, the pores of the first filter membrane 21 and the second filter membrane 31 are selected according to needs during actual use.

[0034] The bottom of the first installation frame 2 and the bottom of the second installation frame 3 are both connected to a shell 41 , the middle of the shell 41 is connected to a discharge pipe 42 , and the first exhaust pipe 51 and the second exhaust pipe 52 are respectively connected to the internal spaces of the two shells 41 .

[0035] The setting of the shell 41 allows the filtered vanillic acid to be received, and the first exhaust pipe 51 and the second exhaust pipe 52 are both connected to the corresponding shell 41, so that a high negative pressure can be directly generated inside the shell 41, ensuring that the vanillic acid can quickly pass through the green filter membrane.

[0036] The ports of the two discharge pipes 42 are both connected to a slide seat 43 , a blocking plate 44 is slidably connected inside the slide seat 43 , and the outer wall of the box body 1 is connected to two cylinders 4 , and the output ends of the two cylinders 4 are respectively connected to the blocking plate 44 .

[0037] The extension and retraction of the cylinder 4 drives the blocking plate 44 to slide on the slide seat 43, so that the first filter space 13, the second filter space 14 and the vacuum refrigeration space 15 can be controlled and kept closed, thereby ensuring that the pressure difference applied to the upper and lower parts of the corresponding filter membrane when the negative pressure fan 5 is started can quickly reach the required level. At the same time, it ensures that the vacuum refrigeration space 15 will not affect the other two filter membranes and cause damage to the filter membranes when evacuating the vacuum.

[0038] The first exhaust pipe 51 , the first outlet pipe 511 , the second exhaust pipe 52 and the second outlet pipe 521 are all connected with a voltage-stabilizing tube 54 , the connection point of the voltage-stabilizing tube 54 is located between the corresponding solenoid valve and the box body 1 , and a pressure valve 55 is provided on each of the four voltage-stabilizing tubes 54 .

[0039] The pressure-stabilizing tube 54 on the first exhaust pipe 51 and the second exhaust pipe 52 is used to ensure that when the negative pressure level under the corresponding filter membrane is low, the external space breaks through the restriction of the pressure valve 55 and enters the corresponding exhaust pipe, ensuring that the corresponding filter membrane will not be damaged due to excessive pressure difference;

[0040] When the positive pressure in the space above the corresponding filter membrane is high, the pressure-stabilizing tube 54 on the first air outlet pipe 511 and the second air outlet pipe 521 allows the excess air to break through the restriction of the pressure valve 55 and be discharged to the outside of the box 1, thus ensuring that the corresponding filter membrane will not be damaged due to excessive pressure difference.

[0041] In addition, the connection between the voltage-stabilizing tube 54 and the corresponding air duct is arranged between the box body 1 and the solenoid valve to ensure that the remaining air ducts will not leak during operation.

[0042] A tray 61 is placed in the vacuum refrigeration space 15 . A refrigerator is disposed at the bottom of the vacuum refrigeration space 15 , and the tray 61 is located on the upper part of the refrigerator.

[0043] The filtered vanillic acid finally falls into the tray 61 and is received. The tray 61 is placed on the upper part of the refrigerator, and the refrigerator freezes the vanillic acid.

[0044] A cylinder 64 is connected to the outer wall of the box body 1, and a piston plate 66 is slidably connected inside the cylinder 64. A ring 68 is provided at the end of the cylinder 64 near the vacuum refrigeration space 15. A push rod 65 is fixedly connected to the piston plate 66, and a spring 67 is sleeved on the push rod 65; a slide 63 is slidably connected to the vacuum refrigeration space 15 in a transverse manner and a pressure frame 62 is slidably connected to the vacuum refrigeration space 15. The end of the push rod 65 is fixedly connected to the slide 63, and a connecting rod 631 is hinged at the lower part of the slide 63. The connecting rod 631 is hinged to the pressure frame 62. When the vacuum degree in the vacuum refrigeration space 15 increases, the piston plate 66 slides toward the vacuum refrigeration space 15 to drive the pressure frame 62 to press down on the tray 61.

[0045] After the vanillic acid is completely discharged into the tray 61, the lower cylinder 4 is controlled to extend so that the blocking plate 44 blocks the shell 41 at the bottom of the second filter membrane 31, so that the vacuum refrigeration space 15 is in a closed state. At this time, the negative pressure fan 5 evacuates the vacuum refrigeration space 15. The negative pressure causes the piston plate 66 to overcome the elastic force of the spring 67 and slide into the vacuum refrigeration space 15, so that the push rod 65 pushes the slide 63 to move horizontally, and the slide 63 pushes the pressing frame 62 downward through the connecting rod 631. At this time, the pressing frame 62 presses the tray 61 against the bottom wall of the vacuum refrigeration space 15 to ensure that the refrigerator is in close contact with the bottom of the tray 61, so that the vanillic acid can be stably frozen. At the same time, with the negative pressure in the vacuum refrigeration space 15, the water contained in the freeze-dried vanillic acid is sublimated to complete the purification of the vanillic acid.

[0046] A scraper 621 is provided at the lower part of the pressing frame 62 , and the scraper 621 slides on the pressing frame 62 via an electric slider.

[0047] After the pressing frame 62 is pressed against the tray 61 , the electric slider operates and controls the scraper 621 to slide back and forth at the bottom of the pressing frame 62 . The scraper 621 disturbs the frozen vanillic acid in the tray 61 to promote the rapid sublimation of water.

[0048] A door 6 is provided on the side of the vacuum refrigeration space 15 .

[0049] After the door 6 is opened, it is convenient to take the tray 61 into the vacuum refrigeration space 15 .

[0050] A box cover 11 is arranged on the top of the box body 1 , and a drainage cover 12 is connected to the upper end of the box body 1 .

[0051] The box cover 11 is opened to pour the vanillic acid prepared from black sesame skin into the box, and the drainage cover 12 allows the vanillic acid to be drained and then drip onto the first filter membrane 21 .

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vanillic acid purification device, comprising a housing (1), characterized in that: A first filter membrane (21) and a second filter membrane (31) are connected in the vertical direction inside the box (1), and the first filter membrane (21) and the second filter membrane (31) divide the internal space of the box (1) into a first filter space (13), a second filter space (14) and a vacuum refrigeration space (15); The outer wall of the box body (1) is connected to a negative pressure fan (5); the air suction end of the negative pressure fan (5) is connected to a first air suction pipe (51), a second air suction pipe (52) and a third air suction pipe (53); the air outlet end of the negative pressure fan (5) is connected to a first air outlet pipe (511), a second air outlet pipe (521) and a third air outlet pipe (531); the first air suction pipe (51) and the first air outlet pipe (511) are respectively connected to the second filter space (14) and the first filter space (13); the second air suction pipe (52) and the second air outlet pipe (521) are respectively connected to the vacuum refrigeration space (15) and the second filter space (14); the third air suction pipe (53) and the third air outlet pipe (531) are respectively connected to the vacuum refrigeration space (15) and the external space of the box body (1); Solenoid valves are provided on the first exhaust pipe (51), the second exhaust pipe (52), the third exhaust pipe (53), the first air outlet pipe (511), the second air outlet pipe (521) and the third air outlet pipe (531). The solenoid valves from the first exhaust pipe (51) and the first air outlet pipe (511) to the second exhaust pipe (52) and the second air outlet pipe (521) to the third exhaust pipe (53) and the third air outlet pipe (531) are opened in sequence, so that the vanillic acid moves from the first filtering space (13) to the vacuum refrigeration space (15).

2. The vanillic acid purification device according to claim 1, characterized in that: A first installation frame (2) and a second installation frame (3) are connected inside the box body (1); the first filter membrane (21) and the second filter membrane (31) are connected to the first installation frame (2) and the second installation frame (3), respectively.

3. The vanillic acid purification device according to claim 2, characterized in that: The bottoms of the first installation frame (2) and the second installation frame (3) are both connected to a shell (41), the middle of the shell (41) is connected to a discharge pipe (42), and the first exhaust pipe (51) and the second exhaust pipe (52) are respectively connected to the internal spaces of the two shells (41).

4. The vanillic acid purification device according to claim 3, characterized in that: The ports of the two discharge pipes (42) are both connected to a slide seat (43), a blocking plate (44) is slidably connected inside the slide seat (43), and the outer wall of the box body (1) is connected to two cylinders (4), and the output ends of the two cylinders (4) are respectively connected to the blocking plate (44).

5. The vanillic acid purification device according to claim 4, characterized in that: The first air exhaust pipe (51), the first air outlet pipe (511), the second air exhaust pipe (52) and the second air outlet pipe (521) are all connected to a voltage-stabilizing tube (54); the connection point of the voltage-stabilizing tube (54) is located between the corresponding solenoid valve and the box body (1), and a pressure valve (55) is provided on each of the four voltage-stabilizing tubes (54).

6. The vanillic acid purification device according to claim 5, characterized in that: A tray (61) is placed in the vacuum refrigeration space (15), a refrigerator is arranged at the bottom of the vacuum refrigeration space (15), and the tray (61) is located on the top of the refrigerator.

7. The vanillic acid purification device according to claim 6, characterized in that: A cylinder (64) is connected to the outer wall of the box body (1), a piston plate (66) is slidably connected inside the cylinder (64), a ring (68) is provided at the end of the cylinder (64) close to the vacuum refrigeration space (15), a push rod (65) is fixedly connected to the piston plate (66), and a spring (67) is sleeved on the push rod (65); The vacuum refrigeration space (15) is connected to a slide frame (63) in a transverse sliding manner and to a pressure frame (62) in a longitudinal sliding manner. The end of the push rod (65) is fixedly connected to the slide frame (63). The lower part of the slide frame (63) is hinged with a connecting rod (631). The connecting rod (631) is hinged to the pressure frame (62). When the vacuum degree in the vacuum refrigeration space (15) increases, the piston plate (66) slides toward the vacuum refrigeration space (15) to drive the pressure frame (62) to press down on the tray (61).

8. The vanillic acid purification device according to claim 7, characterized in that: A scraper (621) is provided at the lower part of the pressing frame (62), and the scraper (621) slides on the pressing frame (62) via an electric slider.

9. The vanillic acid purification device according to claim 8, characterized in that: A door (6) is provided on the side of the vacuum refrigeration space (15).

10. The vanillic acid purification device according to claim 1, characterized in that: A box cover (11) is provided on the top of the box body (1), and a drainage cover (12) is connected to the upper port of the box body (1).

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