Filtering device for preparing L-phenylglycine ethyl potassium salt

Abstract

The utility model discloses a filtering device for preparing ethyl potassium L-phenylglycine. The filtering device comprises a rack, a fine net assembly, a driving device, a coarse net assembly and a feeding assembly, the fine mesh assembly comprises a first screen body and a fine mesh; the coarse mesh assembly comprises a second screen body, a coarse mesh, an auxiliary bracket and a vibration device; the first screen body and the second screen body are arranged in an inclined V shape, and the second screen body is located above the first screen body. The first screen body and the second screen body are rectangular box bodies; the mesh diameter of the coarse screen is larger than that of the fine screen; semi-finished sylvite screened by the coarse screen falls on the fine screen to be continuously screened; the second screen body is connected with the auxiliary bracket through an elastic rubber block; an elastic cleaning ball is arranged between the coarse screen and the bottom plate; the screening device has the beneficial effects that due to the fact that the diameter of the coarse screen is large, the coarse screen can remove a part of large particles firstly, the fine screen continues to remove a part of large particles, the labor intensity of each layer can be reduced, and the screening efficiency can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of stirring technology, and specifically relates to a filtration device for preparing L-phenylglycine ethyl potassium salt. Background Technology

[0002] L-phenylglycine ethyl potassium salt is a chemical substance with a molecular weight of 301.38. It is mainly used to prepare semi-synthetic penicillins and cephalosporin drugs, such as ampicillin, piperazine penicillin, cephalexin, and cefaclor. It is a white or off-white crystalline powder that is easily soluble in water and hydrolyzed. During storage and transportation, it should be protected from light, moisture, and fire.

[0003] However, during the production of L-phenylglycine ethyl potassium salt, our company needs to screen the raw materials. Due to the existing filtration device, a large amount of raw materials accumulate during screening. Since there is only one layer of screen, the screening rate of L-phenylglycine ethyl potassium salt raw materials is greatly reduced, thus affecting the screening speed of raw materials.

[0004] Among the existing patents, application number 202022161293.5, entitled "A Filtering Device for the Production of L-phenylglycine Ethyl Potassium Salt," discloses a device including a supporting side plate and a fixed bracket. The supporting side plate has three movable grooves inside, and the fixed bracket has three receiving plates fixedly installed inside by screws. Each of the three receiving plates has a sliding support plate on its top. However, the filter screen has only one layer, and when there are many large impurities, the screening is relatively slow, which affects the screening efficiency.

[0005] Another application, with application number 202220798664.7, entitled "A Filtering Device for the Production of L-phenylglycine Ethyl Potassium Salt," discloses a filter box, a material holding tank, a vibration mechanism, a spray pipe, and a swing mechanism. The filter box has an inlet on its side and an outlet at its lower end. Two guide rods are horizontally arranged in the filter box below the inlet, and the material holding tank is connected to sliders on the two guide rods. The bottom surface of the material holding tank has filter holes. The vibration mechanism is mounted on the filter box and connected to the material holding tank to drive the material holding tank to vibrate horizontally. The first end of the spray pipe extends into the filter box, and the second end is connected to a first pipe on a water storage tank via a rotary joint. The swing mechanism is mounted on the filter box and connected to the spray pipe to drive the spray pipe to swing. This application also uses a single-layer filter screen and suffers from the aforementioned problems. Utility Model Content

[0006] The purpose of this invention is to provide a filtration device for preparing L-phenylglycine ethyl potassium salt, and to improve sieving efficiency through layered sieving.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A filtration device for preparing L-phenylglycine ethyl potassium salt includes a frame, a fine screen assembly mounted on the frame, a drive device for driving the fine screen assembly to reciprocate, a coarse screen assembly mounted above the fine screen assembly, and a feed assembly positioned above the coarse screen assembly. The fine screen assembly includes a first screen body and a fine screen fixed within the first screen body. The coarse screen assembly includes a second screen body, a coarse screen fixed within the second screen body, and a vibration device for driving the second screen body to vibrate. The first and second screen bodies are arranged in an inverted V-shape, with the second screen body positioned above the first screen body. Both the first and second screen bodies are rectangular boxes. The mesh diameter of the coarse screen is larger than that of the fine screen. The semi-finished potassium salt, after being screened by the coarse screen, falls onto the fine screen for further screening.

[0009] Furthermore, the coarse screen assembly also includes an auxiliary support mounted on the frame, and the second screen body is connected to the auxiliary support via an elastic rubber block; the vibration device is a vibration motor, which is mounted on the second screen body.

[0010] Furthermore, a bottom plate is installed inside the second screen body, the bottom plate being located below the coarse screen, and elastic cleaning balls are provided between the coarse screen and the bottom plate.

[0011] Furthermore, the fine screen assembly also includes a first connecting rod assembly with one end hinged to one end of the first screen body and a second connecting rod assembly with one end hinged to the other end of the first screen body; the other end of the first connecting rod assembly is hinged to the frame, and the other end of the second connecting rod assembly is hinged to the drive device.

[0012] Furthermore, the first connecting rod assembly includes a first connecting rod, a first bearing seat fixedly connected to one end of the first connecting rod, and a second bearing seat fixedly connected to the frame; the first screen body is rotatably connected to the first bearing seat; and the other end of the first connecting rod is rotatably connected to the second bearing seat.

[0013] Furthermore, the second link assembly includes a second link, a third bearing housing fixedly connected to one end of the second link, and a fourth bearing housing rotatably connected to the drive device; the other end of the second link is fixedly connected to the fourth bearing housing.

[0014] Furthermore, the third bearing seat is rotatably connected to the first screen body.

[0015] Furthermore, rubber bearings are installed in the first bearing housing, the second bearing housing, the third bearing housing, and the fourth bearing housing.

[0016] Furthermore, the drive device includes a motor bracket fixedly connected to the frame, a base fixedly connected to the motor bracket, a passive pulley rotatably connected to the base, a drive pulley pulverizedly connected to the passive pulley, a belt disposed between the passive pulley and the drive pulley, and a motor for driving the drive pulley to rotate; a rotating shaft is rotatably connected near the edge of the passive pulley, and the rotating shaft is rotatably connected to a fourth bearing seat.

[0017] Compared with the prior art, the beneficial effects of this application are:

[0018] The first and second sieve bodies are arranged in an inverted V-shape, with the second sieve body positioned above the first sieve body. Both the first and second sieve bodies are rectangular boxes. The mesh diameter of the coarse screen is larger than that of the fine screen. Raw materials are fed onto the coarse screen of the first sieve body. After vibration, the coarse screen first separates the coarser particles from the L-phenylglycine ethyl potassium salt raw material, removing the larger particles. These large particles are collected through the outlet on the coarse screen. The remaining semi-finished products pass through the coarse screen onto the fine screen of the second sieve plate for further sieving. Larger potassium salt particles are removed from the fine screen. The qualified potassium salt raw material collected after passing through the fine screen is stored for use in pharmaceutical manufacturing. Because the coarse screen has a larger diameter, it can remove some large particles first, and the fine screen can then remove the rest, reducing the labor intensity at each layer and thus improving sieving efficiency.

[0019] The motor drives the passive pulley to rotate via the drive device. The passive pulley drives the fourth bearing seat to rotate around the center of the passive pulley via the shaft. The fourth bearing seat drives one end of the second connecting rod to rotate around the center of the passive pulley. The other end of the second connecting rod drives the first screen body to move up, down, left, and right, thereby screening the potassium salt that has passed through the coarse screen.

[0020] By using rubber bearings, the first and second connecting rods experience less stress during movement, thus extending the service life of the connecting components.

[0021] The cleaning balls prevent the coarse screen from clogging and affecting screening efficiency. Attached Figure Description

[0022] Appendix Figure 1 This is a schematic diagram of the structure of this application;

[0023] Appendix Figure 2 This is a schematic diagram of the drive device.

[0024] Appendix Figure 3 for Figure 1 Enlarged view of point A;

[0025] Appendix Figure 4 for Figure 1 Enlarged view of point B;

[0026] In the attached diagram,

[0027] 1-Frame, 2-Fine screen assembly, 3-Coarse screen assembly, 4-Auxiliary support, 5-Feeding assembly;

[0028] 21-Second connecting rod assembly, 211-Second bearing housing, 212-First connecting rod, 213-First bearing housing;

[0029] 22-Second connecting rod assembly, 221-Fourth bearing housing, 222-Second connecting rod, 223-Third bearing housing, 224-Rubber bearing;

[0030] 23-Drive unit, 231-Passive pulley, 232-Motor bracket, 233-Base, 234-Motor, 235-Belt, 236-Drive pulley;

[0031] 31-Coarse screen, 32-Cleaning ball, 33-Base plate, 34-Vibration motor, 35-Elastic rubber block. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0034] Example 1

[0035] like Figure 1 As shown,

[0036] A filtration apparatus for preparing L-phenylglycine ethyl potassium salt includes a frame 1, a fine mesh assembly 2 mounted on the frame 1, a drive device 23 for driving the fine mesh assembly 2 to reciprocate, a coarse mesh assembly 3 mounted above the fine mesh assembly 2, and a feed assembly 5 disposed above the coarse mesh assembly 3; the feed assembly 5 feeds L-phenylglycine ethyl potassium salt raw material onto the coarse mesh assembly 3.

[0037] The detailed structure is as follows: the fine screen assembly 2 includes a first screen body and a fine screen fixed inside the first screen body; the coarse screen assembly 3 includes a second screen body, a coarse screen 31 fixed inside the second screen body, and a vibration device for driving the second screen body to vibrate; the first screen body and the second screen body are arranged in an inclined V-shape, with the second screen body located above the first screen body; the feed assembly 5 is located at the higher end of the second screen body (coarse screen 31), and potassium salt flows from the higher end to the lower end for screening; unqualified large-particle potassium salt is discharged from the bottom end of the coarse screen 31, and the semi-finished potassium salt that has passed through the coarse screen 31 falls onto the fine screen for further screening.

[0038] Both the first sieve body and the second sieve body are rectangular boxes;

[0039] The coarse screen 31 has a larger mesh diameter than the fine screen. The larger mesh diameter of the coarse screen 31 allows for the rapid sieving of larger potassium salt particles, which can then be further sieved through the fine screen, thus improving sieving efficiency. Based on our experience, a mesh diameter 1.5 times that of the fine screen is suitable for the coarse screen 31.

[0040] The semi-finished potassium salt after being screened by the coarse screen 31 falls onto the fine screen for further screening.

[0041] The coarse screen assembly also includes an auxiliary support 4 mounted on the frame 1, and the second screen body is connected to the auxiliary support 4 via an elastic rubber block 35; the vibration device is a vibration motor 34, which is mounted on the second screen body. The elastic rubber block reduces the impact of the vibration motor 34 on the frame 1 and the auxiliary support 4 during vibration.

[0042] The fine screen assembly 2 further includes a first connecting rod assembly 21 with one end hinged to one end of the first screen body and a second connecting rod assembly 22 with one end hinged to the other end of the first screen body; the other end of the first connecting rod assembly 21 is hinged to the frame 1, and the other end of the second connecting rod assembly 22 is hinged to the drive device.

[0043] like Figure 2 As shown, the first connecting rod assembly 21 includes a first connecting rod 212, a first bearing seat 213 fixedly connected to one end of the first connecting rod 212, and a second bearing seat 211 fixedly connected to the frame 1. The first screen body is rotatably connected to the first bearing seat 213; the other end of the first connecting rod 212 is rotatably connected to the second bearing seat 211.

[0044] like Figure 3As shown, the second connecting rod assembly 22 includes a second connecting rod 222, a third bearing seat 223 fixedly connected to one end of the second connecting rod 222, and a fourth bearing seat 221 rotatably connected to the drive device 23; the other end of the second connecting rod 222 is fixedly connected to the fourth bearing seat 221; and the third bearing seat 223 is rotatably connected to the first screen body.

[0045] like Figure 4 As shown, the drive device 23 includes a motor bracket 232 fixedly connected to the frame 1, a base 233 fixedly connected to the motor bracket 232, a passive pulley 231 rotatably connected to the base 233, a driving pulley 236 driven by the passive pulley 231, a belt 235 disposed between the passive pulley 231 and the driving pulley 236, and a motor 234 for driving the driving pulley 236 to rotate. A rotating shaft is rotatably connected near the edge of the passive pulley 231, and the rotating shaft is rotatably connected to a fourth bearing seat 221. The motor 234 drives the passive pulley 231 to rotate, and the passive pulley 231 drives the fourth bearing seat 221 to rotate around the center of the passive pulley 231 via the rotating shaft. The fourth bearing seat 221 drives one end of the second connecting rod 222 to swing around the center of the passive pulley, and the other end of the second connecting rod 222 drives the fine screen of the first sieve body to sway up, down, left, and right. This is used for sieving potassium salts.

[0046] Work process,

[0047] When potassium salt raw materials need to be screened and filtered, the raw materials are added to the feed assembly 5. The raw materials are added to the higher end of the coarse screen 31. The vibration motor 34 is started, and the vibration motor drives the first screen body to vibrate. Large particles of potassium salt on the coarse screen 31 roll down from the higher end of the coarse screen 31 for collection. Qualified semi-finished potassium salt falls onto the fine screen below for further screening. The motor of the drive device rotates, which drives the passive pulley 231 to rotate. The passive pulley 231 drives the second connecting rod 222 to swing. The second connecting rod 222 drives the fine screen to shake, screening the potassium salt on the fine screen to the qualified level.

[0048] Example 2

[0049] The structure of this embodiment is largely the same as that of Embodiment 1.

[0050] The difference is that,

[0051] During use, it was found that the coarse screen (31) frequently clogs. Existing devices typically clean the screen using vibration or a brush, but because the brush is too soft, the cleaning effect is poor.

[0052] like Figure 1As shown, a bottom plate 33 is installed in the second screen body. The bottom plate 33 is located below the coarse screen 31, and an elastic cleaning ball 32 is provided between the coarse screen 31 and the bottom plate 33.

[0053] When the vibration motor 34 vibrates, the cleaning ball 32 collides with the coarse screen 31, which can prevent the screen from clogging.

[0054] Similarly, cleaning balls 32 can be installed on the fine screen assembly 2 to clean it and prevent the fine screen from clogging.

[0055] Example 3

[0056] The structure of this embodiment is largely the same as that of embodiment 2.

[0057] The difference is that,

[0058] During use, it was found that because ordinary bearings are installed in ordinary bearing housings, the first screen body is noisy when it is working, and the bearing housing is easily damaged, which needs to be resolved.

[0059] like Figure 2-3 As shown, rubber bearings 224 are installed in the first bearing housing 213, the second bearing housing 211, the third bearing housing 223 and the fourth bearing housing 221.

[0060] The rubber bearing 224 is designed to prevent noise during the movement of the first screen body, reduce noise, prevent loosening of the connection parts, and extend the service life of the connecting parts.

Claims

1. A filter device for preparing levoglutamine ethyl dunn salt, characterized by, The utility model provides a double -deck screen, including frame (1), install fine mesh assembly (2) on frame (1), be used for driving fine mesh assembly (2) reciprocating motion drive arrangement (23), install the coarse mesh assembly (3) above fine mesh assembly (2) and be equipped with the feeding assembly (5) above coarse mesh assembly (3);Fine mesh assembly (2) includes first screen body, the fine screen fixed in first screen body, and coarse mesh assembly (3) includes second screen body, the coarse screen (31) fixed in second screen body and vibration device that drives second screen body vibrates, first screen body with second screen body is arranged in the V shape of toppling, and second screen body is located first screen body above, first screen body with second screen body are all rectangular box, and the mesh diameter of coarse screen (31) is greater than the mesh diameter of fine screen.

2. A filter device for preparing levoglutamine ethyl dunn salt according to claim 1, characterized in that: Coarse mesh assembly (3) further includes auxiliary support (4) installed on frame (1), and second screen body is connected with auxiliary support (4) through elastic rubber block (35), and vibration device is vibration motor (34), and vibration motor (34) is installed on second screen body.

3. A filter device for preparing levoglutamine ethyl dunn salt according to claim 2, characterized in that: Second screen body is installed with bottom plate (33), bottom plate (33) is located below coarse screen (31), and elastic cleaning ball (32) is arranged between coarse screen (31) and bottom plate (33).

4. A filter device for preparing levoglutamine ethyl dunn salt according to claim 3, characterized in that: Fine mesh assembly (2) further includes first connecting rod assembly (21) with one end articulated with one end of first screen body and second connecting rod assembly (22) with one end articulated with other end of first screen body, other end of first connecting rod assembly (21) is articulated with frame (1), and other end of second connecting rod assembly (22) is articulated with drive arrangement.

5. A filter apparatus for preparing levoglutamine ethyl dunn salt according to claim 4, characterized in that: First connecting rod assembly (21) includes first connecting rod (212), first bearing seat (213) fixedly connected with one end of first connecting rod (212) and second bearing seat (211) fixedly connected with frame (1), and first screen body is rotatably connected with first bearing seat (213), and other end of first connecting rod (212) is rotatably connected with second bearing seat (211).

6. A filter device for preparing levoglutamine ethyl dunn salt according to claim 5, characterized in that: Second connecting rod assembly (22) includes second connecting rod (222), third bearing seat (223) fixedly connected with one end of second connecting rod (222) and fourth bearing seat (221) rotatably connected with drive arrangement (23), other end of second connecting rod (222) is fixedly connected with fourth bearing seat (221), and third bearing seat (223) is rotatably connected with first screen body.

7. A filter device for preparing levoglutamine ethyl dunn salt according to claim 6, characterized in that: Rubber bearing is installed in first bearing seat (213), second bearing seat (211), third bearing seat (223) and fourth bearing seat (221).

8. A filter device for preparing levoglutamine ethyl dunn salt according to claim 7, characterized in that: The driving device (23) comprises a motor support (232) fixedly connected with the rack (1), a base (233) fixedly connected with the motor support (232), a passive pulley (231) rotationally connected with the base (233), a driving pulley (236) in transmission connection with the passive pulley (231), a belt (235) arranged between the passive pulley (231) and the driving pulley (236), and a motor (234) for driving the driving pulley (236) to rotate; a rotating shaft is rotationally connected with an edge part close to the passive pulley (231), and the rotating shaft is rotationally connected with the fourth bearing seat (221).

Images