Injection plug rod for medicine filling
By using the sealing design of the guide ring and O-ring and the sealing function of the dust cover in the injection stopper rod for drug filling, the problems of poor sealing and lack of dustproof function of the existing injection stopper rod body are solved, and good sealing is achieved Anti-toxic and dust-proof effect, reducing drug waste and maintenance costs.
Patent Information
- Application Number
- CN202420978208.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-08
AI Technical Summary
The existing plug rod body has poor sealing properties, is prone to wear, and does not have dustproof function when not in use, resulting in increased drug waste and equipment maintenance costs.
A stopper rod for drug filling is designed, which uses a stopper sleeve, a stopper rod body, a guide ring, an O-ring, a torsion spring, a rotating rod, a dust cover and a cover plate. The sealed design avoids wear and prevents external dust from entering through the sealing function of the dust cover.
It achieves good sealing of the injection stopper rod, avoids drug leakage and wear, and has dust-proof function, reducing equipment maintenance costs and drug waste.
Smart Images
Figure CN222373152U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medicine filling, in particular to an injection rod for medicine filling. Background Art
[0002] The drug filling device is a device used to accurately and efficiently fill drugs or liquid medicines into specific containers. In the drug filling device, the plunger rod body (also known as the push rod or piston rod body) is a core component. Its working principle is to fill liquid or semi-fluid substances into the container by moving left and right inside the container.
[0003] However, the existing plunger rod body has poor sealing performance when performing piston movement, and is easily worn during use, causing drug outflow, which not only causes drug waste, but also increases the maintenance cost of the equipment. At the same time, when the device is not in use, it does not have the function of sealing the feed pipe, causing external dust to enter the feed pipe, affecting the use of the equipment. Therefore, a plunger rod for drug filling is proposed. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a stopper rod for drug filling, which has the advantages of good sealing and dustproof effect, etc., and solves the problems that the existing stopper rod body has poor sealing performance, is prone to wear during piston movement, and has no dustproof device.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection rod for drug filling, comprising a filling device body, wherein an injection device is arranged inside the filling device body;
[0006] The injection plug device includes a plug sleeve, a plug rod body, a first guide ring, a first O-ring, a second guide ring, a second O-ring, a torsion spring, a rotating rod, a dust cover and a cover plate. The filling device body is provided with a plug sleeve inside, the plug sleeve is movably connected with the plug rod body inside, the first guide ring is fixedly installed on the outside of the plug rod body, the first guide ring is provided with a first O-ring inside, the second guide ring is fixedly installed on the outside of the first guide ring, the second O-ring is provided inside the second guide ring, the torsion spring is provided on the outside of the plug rod body, the rotating rod is provided on the outside of the plug rod body, the dust cover is provided on the outside of the rotating rod, and the cover plate is provided on the outside of the dust cover.
[0007] Furthermore, a limiting ring is fixedly installed on the outer surface of the plug rod body, a feed pipe is fixedly installed inside the plug rod body, the number of the first guide rings is two, the opposite sides of the two first guide rings are fixedly connected to the left and right sides of the second guide ring respectively, and a third O-ring is fixedly installed on the outside of the second guide ring.
[0008] Furthermore, the inner diameter of the first O-ring is 10.8*2.2CM, the inner diameter of the second O-ring is 14*2CM, and the inner diameter of the third O-ring is 18*2.2CM.
[0009] Furthermore, the number of the first O-rings is four, of which two are respectively located inside the two first guide rings, and the other two are both inside the second guide ring. The number of the second O-rings is two, and the two are both located inside the second guide ring.
[0010] Furthermore, a mounting frame is fixedly installed on the outside of the plug rod body, and two support blocks are fixedly installed on the outside of the mounting frame. There are two rotating rods and two dust covers. The two rotating rods are respectively located inside the two dust covers, and the outer surfaces of the two rotating rods are respectively movably connected to the inside of the two support blocks.
[0011] Furthermore, the number of the torsion springs is two, the tops of the two torsion springs are respectively fixedly connected to the inside of the two dust covers, the bottoms of the two torsion springs are respectively fixedly connected to the tops of the two support blocks, and the outside of the mounting frame and the inside of the cover plate are both provided with a first threaded ring. Beneficial Effects
[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0013] The injection stopper rod of the drug filling inputs the drug into the interior of the stopper rod body through the feed pipe, and then the stopper rod body performs piston movement in the stopper sleeve, thereby transporting the drug from the stopper rod body to the filling device body for subsequent filling processes. During the piston movement, the first guide ring and the second guide ring are driven to move by the stopper rod body, and the first guide ring and the second guide ring are sealed by the first O-ring, the second O-ring and the third O-ring. Due to the softness of the materials of the first O-ring, the second O-ring and the third O-ring, wear of the first guide ring and the second guide ring is avoided. After use, the dust cover will seal the feed pipe opening under the action of the rotating rod and the torsion spring, and then the cover plate is installed through the first threaded ring to perform dustproof treatment on the feed pipe, thereby achieving a good sealing performance and dustproof function. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the front structure of the utility model;
[0015] Figure 2 This is a front sectional structural diagram of the injection plug device of the utility model;
[0016] Figure 3 For this utility model Figure 2Enlarged structural diagram at A in the middle.
[0017] In the figure: 1. filling device body; 2. injection plug device; 201. plug sleeve; 202. plug rod body; 203. first guide ring; 204. first O-ring; 205. second guide ring; 206. second O-ring; 207. torsion spring; 208. rotating rod; 209. dust cover; 210. cover plate. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figure 1-3 , a drug filling injection rod, comprising a filling device body 1, wherein the filling device body 1 is provided with an injection device 2;
[0020] The injection plug device 2 comprises a plug sleeve 201, a plug rod body 202, a first guide ring 203, a first O-ring 204, a second guide ring 205, a second O-ring 206, a torsion spring 207, a rotating rod 208, a dust cover 209 and a cover plate 210. The plug sleeve 201 is arranged inside the filling device body 1, and the plug rod body 202 is movably connected inside the plug sleeve 201. The first guide ring 203 is fixedly installed outside the plug rod body 202, the first O-ring 204 is arranged inside the first guide ring 203, the second guide ring 205 is fixedly installed outside the first guide ring 203, the second O-ring 206 is arranged inside the second guide ring 205, the torsion spring 207 is arranged outside the plug rod body 202, the rotating rod 208 is arranged outside the plug rod body 202, the dust cover 209 is arranged outside the rotating rod 208, and the cover plate 210 is arranged outside the dust cover 209.
[0021] Specifically, Figure 1 As shown, the filling device body 1 includes a liquid medicine delivery system, a filling system and a finished product packaging device. The liquid medicine delivery system ensures that the medicine remains pure and stable during the delivery process. The filling system is responsible for accurately filling the liquid medicine into the container according to the preset dosage, and the finished product packaging device completes the final packaging of the medicine. When the stopper rod body 202 moves left and right in the stopper sleeve 201, the liquid or semi-fluid substance is input into the device and then filled through the filling system in the device.
[0022] Specifically, Figure 2As shown, the first O-ring 204, the second O-ring 206 and the third O-ring are all made of silicone. As a highly active adsorption material, silicone has the characteristics of amorphous substances. Its chemical properties are very stable and it does not burn, which provides a guarantee for the safety of the drug filling process. At the same time, the flexibility of silicone also ensures the smooth movement of the stopper rod body 202 during the filling process, reduces the particles or particles generated by friction, and helps to ensure the purity of the drug.
[0023] Specifically, Figure 3 As shown, the torsion spring 207 is made of stainless steel. The torsion spring 207 made of this material has excellent high temperature resistance and corrosion resistance, and is particularly suitable for high temperature, high pressure, corrosion and other environments. The torsion spring 207 made of stainless steel is widely used in medical equipment, aerospace instruments, precision instruments and other fields.
[0024] When implementing, follow these steps:
[0025] 1) First remove the cover plate 210, and open the dust cover 209 through the torsion spring 207 and the rotating rod 208 to expose the feed pipe;
[0026] 2) Then the feeding tube is connected to deliver the drug into the stopper rod body 202;
[0027] 3) Then control the stopper rod body 202 to perform piston movement in the stopper sleeve 201, so as to deliver the medicine in the stopper rod body 202 to the filling device body 1 for subsequent processes;
[0028] 4) Finally, the feed pipe opening is sealed by the torsion spring 207 and the rotating rod 208, and then the cover plate 210 is installed to achieve a dustproof effect.
[0029] In summary, the drug filling stopper rod inputs the drug into the inside of the stopper rod body 202 through the feed pipe, and then the stopper rod body 202 performs piston movement in the stopper sleeve 201, thereby transporting the drug from the stopper rod body 202 to the filling device body 1 for subsequent filling processes. During the piston movement, the stopper rod body 202 drives the first guide ring 203 and the second guide ring 205 to move, and the first guide ring 204, the second O-ring 206 and the third O-ring are used to move the first guide ring 203 and the second guide ring 205. The first O-ring 204, the second O-ring 206 and the third O-ring are sealed because of the softness of the materials. This prevents the first guide ring 203 and the second guide ring 205 from being worn. After use, the dust cover 209 will seal the feed pipe opening under the action of the rotating rod 208 and the torsion spring 207, and then the cover plate 210 will be installed through the first threaded ring to prevent dust from entering the feed pipe, thereby achieving better sealing and dust-proof function.
[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0031] 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 stopper rod for drug filling, comprising a filling device body (1), characterized in that: A plugging device (2) is provided inside the filling device body (1); The filling device (2) comprises a plug sleeve (201), a plug rod body (202), a first guide ring (203), a first O-ring (204), a second guide ring (205), a second O-ring (206), a torsion spring (207), a rotating rod (208), a dust cover (209) and a cover plate (210); the plug sleeve (201) is arranged inside the filling device body (1); the plug rod body (202) is movably connected inside the plug sleeve (201); and the first guide ring (203) is fixedly installed outside the plug rod body (202). A first O-ring (204) is arranged inside the first guide ring (203), a second guide ring (205) is fixedly installed outside the first guide ring (203), a second O-ring (206) is arranged inside the second guide ring (205), a torsion spring (207) is arranged outside the plug rod body (202), a rotating rod (208) is arranged outside the plug rod body (202), a dust cover (209) is arranged outside the rotating rod (208), and a cover plate (210) is arranged outside the dust cover (209).
2. The drug filling injection rod according to claim 1, characterized in that: A limiting ring is fixedly installed on the outer surface of the plug rod body (202), a feed pipe is fixedly installed inside the plug rod body (202), there are two first guide rings (203), opposite sides of the two first guide rings (203) are respectively fixedly connected to the left and right sides of the second guide ring (205), and a third O-ring is fixedly installed on the outside of the second guide ring (205).
3. The drug filling injection rod according to claim 2, characterized in that: The inner diameter of the first O-ring (204) is 10.8*2.2CM, the inner diameter of the second O-ring (206) is 14*2CM, and the inner diameter of the third O-ring is 18*2.2CM.
4. The drug filling injection rod according to claim 1, characterized in that: The number of the first O-rings (204) is four, of which two of the first O-rings (204) are respectively located inside the two first guide rings (203), and the other two first O-rings (204) are both located inside the second guide ring (205). The number of the second O-rings (206) is two, and the two second O-rings (206) are both located inside the second guide ring (205).
5. The drug filling injection rod according to claim 1, characterized in that: A mounting frame is fixedly installed on the outside of the plug rod body (202), and two supporting blocks are fixedly installed on the outside of the mounting frame. The number of the rotating rods (208) and the number of the dust covers (209) are both two. The two rotating rods (208) are respectively located inside the two dust covers (209), and the outer surfaces of the two rotating rods (208) are respectively movably connected to the inside of the two supporting blocks.
6. The drug-filled injection rod according to claim 5, characterized in that: The number of the torsion springs (207) is two, the tops of the two torsion springs (207) are respectively fixedly connected to the inside of the two dust covers (209), the bottoms of the two torsion springs (207) are respectively fixedly connected to the tops of the two support blocks, and the outside of the mounting frame and the inside of the cover plate (210) are both provided with a first threaded ring.