Three-stage filtering device for nimodipine injection production

Abstract

The utility model belongs to the technical field of injection production, and particularly relates to a three-stage filtering device for nimodipine injection production, which comprises a main box body, a liquid inlet pipe and a liquid outlet pipe are fixedly inserted at two ends of the main box body respectively, and control valves are in threaded connection with the liquid inlet pipe and the liquid outlet pipe. A cleaning opening is formed in the inner wall of the end, close to the liquid inlet pipe, of the main box body, a baffle is rotationally connected into the cleaning opening through a rotating shaft, a locking block is fixedly connected to the top of the baffle, a locking groove is formed in the outer wall of the main box body, and a locking mechanism corresponding to the locking block is fixedly connected into the locking groove. A first partition plate and a second partition plate are fixedly inserted into the main box body, and a first through opening is formed between the first partition plate and the inner top of the main box body. According to the nimodipine injection filtering device, due to the arrangement of a multi-stage filtering structure, the injection can be fully and effectively filtered by the filtering device, so that the production quality of the nimodipine injection is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection production, in particular to a three-stage filtering device for the production of nimodipine injection. Background Art

[0002] Nimodipine is a second-generation 1,4-dihydropyridine calcium channel blocker and a commonly used cardiovascular drug. Its primary function is to depolarize myocardial cells by blocking calcium influx. Nimodipine selectively inhibits the entry of Ca2+ into cells through calcium channels on the cell membrane, exerting vasodilation and negative inotropic effects. It relaxes vascular smooth muscle, reduces peripheral vascular resistance, and thus lowers blood pressure without reducing blood flow to the brain, coronary arteries, or kidneys. It selectively acts on cerebral vascular smooth muscle, dilating cerebral blood vessels and increasing cerebral blood flow, significantly reducing ischemic brain damage caused by vasospasm.

[0003] Nimodipine also protects and enhances memory, promoting intellectual recovery. Nimodipine is a pale yellow crystalline powder that is odorless and tasteless. It is readily soluble in acetone and chloroform, soluble in ethanol, slightly soluble in ether, and virtually insoluble in water. During the manufacturing process, nimodipine injection requires redundant fine filtration, which requires the use of a filtration device.

[0004] However, the existing filtration device for producing nimodipine injection is relatively simple and cannot fully and effectively filter the injection, thereby affecting the production quality of nimodipine injection. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the filtering device proposed in the above background technology cannot fully and effectively filter the injection, and to propose a three-stage filtering device for the production of nimodipine injection.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A three-stage filtration device for the production of nimodipine injection, comprising a main box, with a liquid inlet pipe and a liquid outlet pipe fixedly inserted at both ends of the main box, both the liquid inlet pipe and the liquid outlet pipe being threadedly connected to a control valve, a cleaning port being provided on the inner wall of the main box near one end of the liquid inlet pipe, a baffle being rotatably connected to the cleaning port via a rotating shaft, a locking block being fixedly connected to the top of the baffle, a locking groove being provided on the outer wall of the main box, a locking mechanism corresponding to the locking block being fixedly connected in the locking groove, a first partition plate and a second baffle being fixedly inserted in the main box Partition, a first opening is provided between the first partition and the inner top of the main box body, a second opening is provided between the second partition and the inner bottom of the main box body, the first partition and the inner wall of the main box body are connected by a first filter screen, the first filter screen is provided with a through opening corresponding to the liquid inlet pipe, a filter frame is provided between the first partition and the second partition, the top of the filter frame is fixedly connected to a mounting block, the top of the mounting block passes through the inner wall of the main box body and extends upward, and a second filter screen is fixedly connected between the bottom of the second partition and the inner wall of the main box body.

[0008] Preferably, a fixing plug is fixedly connected to the inner wall of the baffle.

[0009] Preferably, the locking mechanism includes a fixing rod, an L-shaped locking rod is slidably sleeved on the fixing rod, and the locking block is provided with a locking hole corresponding to the L-shaped locking rod.

[0010] Preferably, a spring is sleeved on the fixing rod, and two ends of the spring are fixedly connected to the L-shaped locking rod and the inner wall of the locking groove respectively.

[0011] Preferably, a handle is fixedly connected to the top of the mounting block.

[0012] Preferably, an observation port corresponding to the position of the second filter is provided on the top of the main box, and a transparent glass plate is fixedly inserted into the observation port.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The utility model provides a multi-stage filtering structure, so that the filtering device can fully and effectively filter the injection, thereby effectively improving the production quality of nimodipine injection;

[0015] 2. The setting of the locking mechanism in the utility model can facilitate the fixation of the locking block, and the fixing plug can ensure the sealing of the baffle. The setting of the handle can facilitate the removal and placement of the filter frame, and the transparent glass plate can check the liquid level at the liquid outlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic structural diagram of a three-stage filtration device for the production of nimodipine injection proposed in the present invention;

[0017] Figure 2 This is a side view structural diagram of the filter frame of a three-stage filtration device for the production of nimodipine injection proposed in the present invention;

[0018] Figure 3 for Figure 1 Schematic diagram of the structure at point A in .

[0019] In the figure: 1 main box, 2 liquid inlet pipe, 3 liquid outlet pipe, 4 control valve, 5 rotating shaft, 6 baffle, 7 locking block, 8 first partition, 9 second partition, 10 first filter, 11 filter frame, 12 mounting block, 13 second filter, 14 fixing plug, 15 fixing rod, 16 L-shaped locking rod, 17 spring, 18 handle, 19 transparent glass plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-3 , a three-stage filtration device for the production of nimodipine injection, comprising a main box body 1, with a liquid inlet pipe 2 and a liquid outlet pipe 3 fixedly inserted at both ends of the main box body 1, for introducing and exporting the injection liquid, and a control valve 4 is threadedly connected to the liquid inlet pipe 2 and the liquid outlet pipe 3, for controlling the introduction and export flow of the injection liquid, a cleaning port is provided on the inner wall of the main box body 1 near one end of the liquid inlet pipe 2, for convenient cleaning of the main box body 1, a baffle 6 is rotatably connected to the cleaning port through a rotating shaft 5, for protective effect, a fixed plug 14 is fixedly connected to the inner wall of the baffle 6 to prevent the injection liquid from leaking, a locking block 7 is fixedly connected to the top of the baffle 6, a locking groove is provided on the outer wall of the main box body 1, and a locking mechanism corresponding to the locking block 7 is fixedly connected in the locking groove for fixing the locking block 7;

[0022] In this embodiment, the locking mechanism includes a fixing rod 15, on which an L-shaped locking rod 16 is slidably sleeved, for fixing the locking block 7. The locking block 7 is provided with a locking hole corresponding to the L-shaped locking rod 16. A spring 17 is sleeved on the fixing rod 15, and the two ends of the spring 17 are respectively fixedly connected to the L-shaped locking rod 16 and the inner wall of the locking groove, providing a certain elastic support for the L-shaped locking rod 16.

[0023] In this embodiment, a first partition plate 8 and a second partition plate 9 are fixedly inserted in the main box body 1 for use as a partition. A first opening is provided between the first partition plate 8 and the inner top of the main box body 1, and a second opening is provided between the second partition plate 9 and the inner bottom of the main box body 1 for passage of the injection liquid. The first partition plate 8 and the inner wall of the main box body 1 are connected by a first filter screen 10 for filtering the injection liquid. The first filter screen 10 is provided with a through-hole corresponding to the liquid inlet pipe 2. A filter frame 11 is provided between the first partition plate 8 and the second partition plate 9 for filtering the injection liquid.

[0024] In this embodiment, the top of the filter frame 11 is fixedly connected to a mounting block 12, and the top of the mounting block 12 is fixedly connected to a handle 18 for convenient removal and placement of the mounting block 12. The top of the mounting block 12 passes through the inner wall of the main box body 1 and extends upward. A second filter screen 13 is fixedly connected between the bottom of the second partition 9 and the inner wall of the main box body 1 for filtering the injection liquid. An observation port corresponding to the position of the second filter screen 13 is provided on the top of the main box body 1, and a transparent glass plate 19 is fixedly inserted in the observation port for convenient viewing of the liquid level in the main box body 1.

[0025] In this embodiment, the injection liquid to be filtered is introduced through the liquid inlet pipe 2. After being filtered by the first filter screen 10, the injection liquid enters the filter frame 11 through the first opening. After being filtered by the filter frame 11, it enters between the second partition plate 9 and the inner wall of the main box body 1 through the second opening, and then is filtered by the second filter screen 13 before being discharged through the liquid outlet pipe 3.

[0026] In this embodiment, by setting up a multi-stage filtering structure, the filtering device can fully and effectively filter the injection, thereby effectively improving the production quality of the nimodipine injection.

[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A three-stage filtration device for the production of nimodipine injection, comprising a main housing (1), characterized in that: A liquid inlet pipe (2) and a liquid outlet pipe (3) are fixedly inserted at both ends of the main box (1), and a control valve (4) is threadedly connected to the liquid inlet pipe (2) and the liquid outlet pipe (3). A cleaning port is provided on the inner wall of the main box (1) near one end of the liquid inlet pipe (2), and a baffle (6) is rotatably connected to the cleaning port through a rotating shaft (5). A locking block (7) is fixedly connected to the top of the baffle (6). A locking groove is provided on the outer wall of the main box (1), and a locking mechanism corresponding to the locking block (7) is fixedly connected to the locking groove. A first partition (8) and a second partition (9) are fixedly inserted in the main box (1), and the first partition (8) is connected to the main box (1). A first opening is provided between the inner top of the main box (1), a second opening is provided between the second partition (9) and the inner bottom of the main box (1), the first partition (8) and the inner wall of the main box (1) are connected through a first filter screen (10), the first filter screen (10) is provided with a through opening corresponding to the liquid inlet pipe (2), a filter frame (11) is provided between the first partition (8) and the second partition (9), the top of the filter frame (11) is fixedly connected to a mounting block (12), the top of the mounting block (12) passes through the inner wall of the main box (1) and extends upward, and a second filter screen (13) is fixedly connected between the bottom of the second partition (9) and the inner wall of the main box (1).

2. The three-stage filtration device for producing nimodipine injection according to claim 1, characterized in that: A fixing plug (14) is fixedly connected to the inner wall of the baffle (6).

3. The three-stage filtration device for producing nimodipine injection according to claim 1, characterized in that: The locking mechanism comprises a fixing rod (15), an L-shaped locking rod (16) is slidably sleeved on the fixing rod (15), and a locking hole corresponding to the L-shaped locking rod (16) is provided on the locking block (7).

4. The three-stage filtration device for producing nimodipine injection according to claim 3, characterized in that: A spring (17) is sleeved on the fixing rod (15), and two ends of the spring (17) are fixedly connected to the L-shaped locking rod (16) and the inner wall of the locking groove respectively.

5. The three-stage filtration device for producing nimodipine injection according to claim 1, characterized in that: A handle (18) is fixedly connected to the top of the mounting block (12).

6. The three-stage filtration device for producing nimodipine injection according to claim 1, characterized in that: An observation port corresponding to the position of the second filter screen (13) is provided on the top of the main box (1), and a transparent glass plate (19) is fixedly inserted into the observation port.

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