Filtering device for p-hydroxyacetophenone production

Abstract

The utility model relates to the technical field of p-hydroxyacetophenone production, in particular to a filtering device for p-hydroxyacetophenone production, which comprises a box body, a feeding hole is formed in the top of the box body, a vibrating plate is mounted in the middle of the interior of the box body, and a screening box is mounted in the middle of the vibrating plate in a penetrating manner; a first filter screen and a second filter screen are installed in the screening box, vibration filtering devices are fixedly installed on the inner walls of the two sides of the box body at the bottom of the vibration plate in a front-back mode, and a collecting box is placed under a discharging port in the bottom of the screening box. A feeding port is formed in the top of a box body, a vibration plate connected with a material screening box in a penetrating mode is installed in the middle of the interior of the box body, a first filter screen and a second filter screen are installed in the material screening box, a vibration filtering device is fixedly installed at the bottom of the vibration plate, and a material collecting box is placed under the bottom of the material screening box. The two filter screens are mounted in the screening box, and are matched with the vibrating plate and the vibrating filter device to secondarily filter and screen hydroxyacetophenone, so that the problem that few impurities are left after filtration is solved.

Description

A filtration device for the production of p-hydroxyacetophenone Technical Field

[0001] This utility model relates to the field of p-hydroxyacetophenone production technology, specifically a filtration device for p-hydroxyacetophenone production. Background Technology

[0002] p-Hydroxyacetophenone, also known as 4'-hydroxyacetophenone, has the molecular formula C8H8O2 and a molecular weight of 136.1479. It is usually a white to pale yellow crystalline powder, which varies depending on the isomer. For example, the melting point of hydroxyacetophenone is about 109-111℃. Hydroxyacetophenone is slightly soluble in water and readily soluble in organic solvents such as ethanol, ether, and chloroform. It is widely used in the pharmaceutical, cosmetic, and fragrance industries.

[0003] Currently, existing hydroxyacetophenone still contains impurities during the production process. These impurities are usually removed by filtration devices. However, existing hydroxyacetophenone filtration devices are relatively inefficient during sieving and may leave some impurities unfiltered, making it difficult to further process the sieved hydroxyacetophenone. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a filtration device for the production of p-hydroxyacetophenone. By installing two screens with different mesh sizes inside the screening box, and in conjunction with a vibrating filtration device, hydroxyacetophenone can be screened and filtered more finely, thus solving the problems of low screening efficiency and some impurities not being filtered out in existing technologies.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides a filtration device for the production of p-hydroxyacetophenone, comprising: a housing, an inlet at the top of the housing, a vibrating plate installed in the middle of the housing, a screening box installed through the middle of the vibrating plate, a first filter screen and a second filter screen installed in the screening box, vibrating filter devices fixedly installed on the inner walls of both sides of the housing at the bottom of the vibrating plate, a receiving box placed directly below the outlet at the bottom of the screening box, and a door at the front of the housing that is hinged and has a handle.

[0008] Optionally, a feed box is fixedly installed on the top of the box body at a feed inlet.

[0009] Optionally, the inside of the feed box is funnel-shaped.

[0010] Optionally, the screening box is divided into an upper screening box and a lower screening box.

[0011] Optionally, the first filter screen is installed inside the upper screening box, and the first filter screen is a medium-mesh filter screen.

[0012] Optionally, the second filter screen is installed inside the lower screening box, and the second filter screen is a small-mesh filter screen.

[0013] Optionally, there are four vibration filtering devices, which are respectively installed on both sides of the inner wall of the box below the vibration plate, and the two sets of vibration filtering devices with different front and rear sides operate alternately.

[0014] Optionally, the vibration filtering device is driven by a motor and a cam fixedly connected to the motor output shaft. The motor output shaft passes through the housing and a mounting plate installed on the inner wall of the housing. A top shaft passes through the extension of the top of the mounting plate. A spring is installed between the top shaft and the extension of the mounting plate. A rotating wheel is mounted at the bottom of the top shaft by a rotating shaft. The top of the top shaft is fixedly connected to the vibration plate.

[0015] Optionally, the bottom of the box has replacement openings on both sides that are the same size as the receiving box.

[0016] Optionally, a baffle is fixedly installed on the rear side of the receiving box.

[0017] Optionally, an observation port is provided in the middle of the box door, and a glass is fixedly installed on the observation port.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, the present invention provides a filtration device for the production of p-hydroxyacetophenone, which has the following beneficial effects:

[0020] 1. This utility model features a feed inlet at the top of the housing, a vibrating plate installed in the middle of the housing, a screening box with a first and a second filter screen installed inside the screening box, and vibrating filtering devices fixedly installed on the inner walls of both sides of the housing at the bottom of the vibrating plate. A receiving box is placed directly below the discharge port at the bottom of the screening box. The front of the housing has a door with a handle installed on it. By installing two filter screens inside the screening box, and in conjunction with the vibrating plate and vibrating filtering devices, hydroxyacetophenone can undergo secondary filtration and screening inside the screening box, reducing the problem of a few impurities remaining after screening.

[0021] 2. This utility model has a feeding box fixedly installed on the feeding port provided on the top of the box body. The inside of the feeding box is funnel-shaped. Setting the inside of the feeding box into a funnel shape can prevent hydroxyacetophenone from leaving any residue in the feeding box, and can more smoothly enter the device for filtration and screening.

[0022] 3. This utility model divides the screening box into an upper screening box and a lower screening box. The first filter screen is installed in the upper screening box and is a medium-mesh filter screen. The second filter screen installed in the lower screening box is a small-mesh filter screen. The screening box is divided into upper and lower sections, and the two filter screens are divided into a medium-mesh filter screen and a small-mesh filter screen. The first filter screen can filter out larger impurities, and the second filter screen can filter out impurities except for hydroxyacetophenone, thus solving the problem of some impurities remaining during filtration.

[0023] 4. This utility model has four vibration filtering devices, which are respectively installed on both sides of the inner wall of the box below the vibration plate. The two sets of vibration filtering devices, which are different from each other, operate alternately. By alternating the operation of the front and rear sets of vibration filtering devices, the screening amplitude can be larger, thus improving the efficiency of filtering and screening.

[0024] 5. In this utility model, the vibration filtering device is driven by a motor that is fixedly connected to a cam via the motor output shaft. The motor output shaft passes through the housing and is mounted on a mounting plate installed on the inner wall of the housing. A top shaft passes through the extended portion of the top of the mounting plate. A spring is installed between the top shaft and the extended portion of the mounting plate. The bottom of the top shaft is mounted by a rotating shaft that rotates a wheel. The top of the top shaft is fixedly connected to the vibration plate. The use of a cam structure can increase the placement space, and the cam structure can achieve a large motion stroke and complex motion transformation in a small space, as well as greater power.

[0025] 6. This utility model provides replacement openings of the same size as the receiving box on both sides of the bottom of the box. The replacement openings allow a new receiving box to be pushed into the box from one side when the receiving box is full, and the full receiving box to be pushed out from the opposite side, thus improving work efficiency.

[0026] 7. This utility model has a baffle fixedly installed on the rear side of the receiving box. The baffle can ensure that the position of the receiving box when it is pushed out and placed will not be offset, thus preventing material waste.

[0027] 8. This utility model has an observation port in the middle of the box door, and a glass is fixedly installed on the observation port. The observation port allows the staff to clearly observe the inside of the device, ensuring that the receiving box can be replaced as soon as possible, while the installed glass can protect the staff from injury. Attached Figure Description

[0028] Figure 1 is a schematic diagram of the filter device structure of this utility model;

[0029] Figure 2 shows a schematic diagram of the structure of the vibration filtering device of this utility model;

[0030] Figure 3 shows a schematic diagram of the screen box structure;

[0031] Figure 4 shows a front view of the structure of this utility model.

[0032] In the diagram: 1. Box body; 2. Feed box; 3. Vibration filter device; 31. Drive motor; 32. Cam; 33. Motor output shaft; 34. Rotary shaft; 35. Spring; 36. Top shaft; 37. Mounting plate; 38. Rotary wheel; 4. Vibrating plate; 5. Screen box; 51. Upper screen box; 52. Lower screen box; 6. Replacement port; 7. Receiving box; 8. First filter screen; 9. Second filter screen; 10. Hinge; 11. Box door; 12. Handle; 13. Observation port; 14. Baffle. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Example: Please refer to Figures 1 to 4. According to the embodiment of this utility model, a technical solution is provided: a filtration device for the production of p-hydroxyacetophenone, including a box body 1, a feed inlet at the top of the box body 1, a vibrating plate 4 installed in the middle of the inside of the box body 1, a screening box 5 installed through the middle of the vibrating plate 4, a first filter screen 8 and a second filter screen 9 installed in the screening box 5, a vibrating filter device 3 fixedly installed on the inner walls of both sides of the box body 1 at the bottom of the vibrating plate 4, a receiving box 7 placed directly below the discharge port at the bottom of the screening box 5, and a door 11 installed at the front end of the box body 1 by a hinge 10, with a handle 12 installed on the door 11.

[0035] The filtration device for the production of p-hydroxyacetophenone with the above structure, after starting the device, puts hydroxyacetophenone into the feed inlet. After the hydroxyacetophenone enters the screening box 5, the vibrating filter device 3 will start working, causing the vibrating plate 4 and the screening box 5 installed on the vibrating plate 4 to vibrate. The material in the screening box 5 will be initially filtered through the first filter screen 8, and then vibrated through the second filter screen 9. The material after secondary filtration falls into the receiving box 7 below. After passing through the two filters in the screening box 5 and the vibrating filter device 3, the impurities in the material can be further filtered.

[0036] Based on the above embodiment, a feeding box 2 is fixedly installed on the top of the box 1 at the feeding port. The inside of the feeding box 2 is funnel-shaped. Setting the inside of the feeding box 2 as a funnel can prevent the material from splashing when it is placed, and the funnel shape can allow the material to enter the inside of the box 1 smoothly.

[0037] Based on the above embodiments, the screening box 5 is divided into an upper screening box 51 and a lower screening box 52. The first filter screen 8 is installed in the upper screening box 51. The first filter screen 8 is a medium-mesh filter screen. The lower screening box 52 is equipped with a second filter screen 9. The second filter screen 9 is a small-mesh filter screen. Dividing the screening box 5 into upper and lower parts can increase the filtration area and capacity. Setting filter screens with different mesh sizes can further filter impurities and improve working efficiency.

[0038] Based on the above embodiments, there are four vibration filter devices 3, which are respectively installed on both sides of the inner wall of the box below the vibration plate 4. The two sets of vibration filter devices 3 with different front and rear sides operate alternately. Setting up four vibration filter devices 3 and dividing them into two sets that operate alternately can make the vibration amplitude larger and the filtration and screening efficiency higher.

[0039] Based on the above embodiments, the vibration filtering device 3 is fixedly connected to the cam 32 by the drive motor 31 through the motor output shaft 33. The motor output shaft 33 passes through the housing 1 and is installed on the mounting plate 37 installed on the inner wall of the housing 1. A top shaft 36 is connected through the extension of the top of the mounting plate 37. A spring 35 is installed between the top shaft 36 and the extension of the mounting plate 37. The bottom of the top shaft 36 is rotated and mounted by the rotating shaft 34. The top of the top shaft 36 is fixedly connected to the vibration plate 4. The drive motor 31 drives the motor output shaft 33 and the cam 32 to rotate. When the cam 32 rotates, the protruding end will intersect with the rotating wheel 38 and lift the top shaft 36. The vibration plate 4 fixedly connected to the top shaft 36 will also be lifted upward. After the cam 32 rotates, the compressed spring 35 will pop the lifted top shaft 36 downward back to the low position. The cam structure can achieve a large motion stroke and complex motion transformation in a small space, and can also have a large power.

[0040] Based on the above embodiment, the bottom of the box 1 has replacement openings 6 on both sides that are the same size as the receiving box 7. A baffle 14 is fixedly installed on the rear side of the receiving box 7. The replacement openings 6 can push in the new receiving box 7 and push out the full receiving box 7 from the other side. The baffle 14 can ensure that there is no displacement when replacing the receiving box 7.

[0041] Based on the above embodiments, an observation port 13 is provided in the middle of the box door 12. A glass is fixedly installed on the observation port 13, which allows observation of the inside of the box 1 through the glass on the observation port 13, and also ensures that the full receiving box 7 can be replaced in a timely manner.

[0042] Working principle: After starting the machine, hydroxyacetophenone material is poured into the feed box 2 and falls into the upper screen box 51, which is connected to the vibrating plate 4 inside the box 1. The two sets of vibrating filter devices 3 below the vibrating plate 4 are driven by the motor output shaft 33 and cam 32 to rotate through the drive motor 31. When the cam 32 rotates, the protruding end will intersect with the rotating wheel 38 and lift the top shaft 36. The vibrating plate 4, which is fixedly connected to the top shaft 36, will also rise. After the cam 32 rotates, the compressed spring 35 will pop the lifted top shaft 36 downward and return it to the lower position. The two sets of vibrating filter devices 3 intersect. During operation, the hydroxyacetophenone material inside the upper screening box 51 will pass through the first filter screen 8 through vibration, filtering out larger impurities. The hydroxyacetophenone material will fall into the lower screening box 52 and pass through the second filter screen 9 through vibration of the vibration filter device 3. The second filter screen 9 can block impurities larger than the hydroxyacetophenone material. The filtered hydroxyacetophenone material will fall into the receiving box 7 at the bottom of the lower screening box 52. The staff can check whether the receiving box 7 is full through the observation port 13 in the middle of the box door 12, so as to replace it through the replacement ports 6 on both sides of the box body 1.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filtration device for the production of p-hydroxyacetophenone, characterized in that, include: The box (1) has a feed inlet at the top. A vibrating plate (4) is installed in the middle of the box (1). A screening box (5) is installed through the middle of the vibrating plate (4). A first filter screen (8) and a second filter screen (9) are installed in the screening box (5). Vibrating filter devices (3) are fixedly installed on the inner walls of both sides of the box (1) at the bottom of the vibrating plate (4). A receiving box (7) is placed directly below the discharge port at the bottom of the screening box (5). A door (11) is installed at the front of the box (1) by a hinge (10). A handle (12) is installed on the door (11).

2. The filtration device for the production of p-hydroxyacetophenone according to claim 1, characterized in that: A feed box (2) is fixedly installed on the top of the box body (1) at the feed inlet.

3. A filtration device for the production of p-hydroxyacetophenone according to claim 2, characterized in that: The inside of the feed box (2) is funnel-shaped.

4. A filtration device for the production of p-hydroxyacetophenone according to claim 1, characterized in that: The screening box (5) is divided into an upper screening box (51) and a lower screening box (52).

5. A filtration device for the production of p-hydroxyacetophenone according to claim 4, characterized in that: The first filter screen (8) is installed in the upper screen box (51), and the first filter screen (8) is a medium-mesh filter screen.

6. A filtration device for the production of p-hydroxyacetophenone according to claim 4, characterized in that: The second filter screen (9) is installed in the lower screening box (52), and the second filter screen (9) is a small-mesh filter screen.

7. A filtration device for the production of p-hydroxyacetophenone according to claim 1, characterized in that: There are four vibration filtering devices (3), which are installed on both sides of the inner wall of the box below the vibration plate (4), and two different sets of vibration filtering devices (3) operate alternately.

8. A filtration device for the production of p-hydroxyacetophenone according to claim 7, characterized in that: The vibration filtering device (3) is fixedly connected to the cam (32) by the drive motor (31) through the motor output shaft (33). The motor output shaft (33) passes through the housing (1) and the mounting plate (37) installed on the inner wall of the housing (1). A top shaft (36) is connected through the extension of the top of the mounting plate (37). A spring (35) is installed between the top shaft (36) and the extension of the mounting plate (37). The bottom of the top shaft (36) is rotated by the rotating shaft (34) to install the rotating wheel (38). The top of the top shaft (36) is fixedly connected to the vibration plate (4).

9. A filtration device for the production of p-hydroxyacetophenone according to claim 1, characterized in that: The bottom sides of the box (1) are provided with replacement openings (6) of the same size as the receiving box (7).

10. A filtration device for the production of p-hydroxyacetophenone according to claim 9, characterized in that: A baffle (14) is fixedly installed on the rear side of the receiving box (7).

11. A filtration device for the production of p-hydroxyacetophenone according to claim 1, characterized in that: An observation port (13) is provided in the middle of the box door (12), and a glass is fixedly installed on the observation port (13).

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