A three-way injection molding sealing gasket

Abstract

The utility model discloses a three-way injection sealing rubber pad, including a bottom gasket, a ring groove is provided on one side of the surface of the bottom gasket, a sealing ring is movably sleeved on the inner wall of the ring groove, the sealing ring is made of polypropylene, and a top groove is provided on the top of the bottom gasket. The utility model relates to the technical field of sealing rubber pads. The three-way injection sealing rubber pad utilizes the arrangement of the bottom gasket, the ring groove, the sealing ring and the top groove, and adopts the method of arranging the sealing ring on the inner wall of the groove for sealing operation. The ring groove is a groove, and has a large amount of space inside, which can alleviate thermal expansion. In addition, the top groove on the surface of the bottom gasket can also alleviate the thermal expansion effect during operation. At the same time, the sealing ring is used to seal the surface of the bottom gasket, and once the sealing ring is aged, the sealing ring can be directly removed and replaced, which is convenient for operation. By opening holes and grooves on its surface, heat can be quickly dissipated outward.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rubber pads, in particular to a sealing rubber pad for a three-way injection piece. Background Art

[0002] A syringe is a common medical device that mainly uses a needle to extract or inject gas or liquid.

[0003] The patent with announcement number CN216725396U discloses a sealing rubber pad for a three-way injection piece of a pressure infusion set, including a sealing rubber pad, a sealing ring fixed on one end face of the sealing rubber pad, an annular groove is provided on the side of the sealing rubber pad, the plane where the annular groove is located is parallel to the end face of the sealing rubber pad, and the annular groove is located in the middle area of ​​the columnar body of the sealing rubber pad. Compared with the prior art, the technical effect of the utility model is that a depression is provided in the middle of the sealing rubber pad, and during sterilization, the sealing rubber pad expands more axially and reduces the radial expansion, and can keep the side of the sealing rubber pad fixed to the three-way joint stably, can withstand the infusion pressure greater than 200kPa, does not affect the sealing of the internal space of the injection piece head, and the product can be used normally.

[0004] In actual use, when operating the three-way injection fitting, drugs will be frequently pushed into the injection fitting during the patient's short-term hospitalization. The sealing rubber pad will undergo an overall thermal expansion effect during the frequent piston pushing and pulling process, and the rubber pad as a whole will be difficult to move smoothly, which directly affects its own sealing. In addition, the traditional rubber pad has a large push-pull resistance. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a three-way injection molding sealing gasket, which solves the problem that the sealing gasket undergoes thermal expansion and contraction as a whole during frequent piston pushing and pulling, making it difficult for the gasket to move smoothly as a whole, directly affecting its own sealing performance. In addition, the traditional gasket has large push-pull resistance.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a three-way injection molding sealing gasket, including a bottom gasket, one side of the bottom gasket surface is provided with an annular groove, the inner wall of the annular groove is movably sleeved with a sealing ring, the sealing ring is made of polypropylene, and a top groove is provided on the top of the bottom gasket.

[0007] Preferably, a heat dissipation ring is fixedly connected to the top of the bottom gasket, and a through hole is opened on the surface of the heat dissipation ring.

[0008] Preferably, a top gasket is fixedly connected to the top of the heat dissipation ring, and a leak-proof annular gasket is fixedly connected to the surface of the top gasket.

[0009] Preferably, a through groove is provided in the middle of the top gasket, and the through groove is circular in shape.

[0010] Preferably, a contact pad is fixedly connected to the top of the top gasket, and the contact pad is conical in shape.

[0011] Beneficial Effects

[0012] The utility model provides a three-way injection piece sealing rubber pad. Compared with the prior art, it has the following beneficial effects:

[0013] (1) The three-way injection-molded sealing gasket has an annular groove on one side of the surface of the bottom gasket. A sealing ring is movably sleeved on the inner wall of the annular groove. The sealing ring is made of polypropylene. A top groove is provided on the top of the bottom gasket. The bottom gasket, the annular groove, the sealing ring and the top groove are arranged. The sealing operation is performed by arranging a sealing ring on the inner wall of the groove. The annular groove is a groove with a large amount of space inside, which can alleviate thermal expansion. In addition, the top groove on the surface of the bottom gasket can also alleviate the thermal expansion effect during operation. At the same time, the sealing ring is used to seal the surface of the bottom gasket. Once the sealing ring is aged, the sealing ring can be directly removed and replaced, which is convenient for operation.

[0014] (2) The sealing rubber gasket of the three-way injection piece is fixedly connected to a heat dissipation ring through the top of the bottom gasket, and a through hole is opened on the surface of the heat dissipation ring. The top of the heat dissipation ring is fixedly connected to the top of the heat dissipation ring, and the surface of the top gasket is fixedly connected to a leak-proof annular gasket. A through groove is opened in the middle of the top gasket, and the through groove is circular in shape. The top of the top gasket is fixedly connected to a contact pad, and the contact pad is conical in shape. By utilizing the settings of the heat dissipation ring and the top gasket, holes and grooves are opened on their surfaces, so that the rubber gasket can quickly dissipate heat outward during the pulling process. Through the setting of the contact pad, the sealing rubber gasket can reduce the residual liquid medicine when used with the injection tube, effectively avoiding the risk of drug waste and overinjection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 For this utility model Figure 2 A partial enlarged view of point A in the middle.

[0018] In the figure: 1. bottom gasket; 2. annular groove; 3. sealing ring; 4. heat dissipation ring; 5. through hole; 6. top gasket; 7. leak-proof annular gasket; 8. through groove; 9. contact pad; 10. top groove. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-3 , the utility model provides two technical solutions:

[0021] Embodiment 1, a three-way injection sealing rubber pad, including a bottom gasket 1, a ring groove 2 is opened on one side of the surface of the bottom gasket 1, a sealing ring 3 is movably sleeved on the inner wall of the ring groove 2, the sealing ring 3 is made of polypropylene, and a top groove 10 is arranged on the top of the bottom gasket 1. The materials commonly used for the syringe piston include polypropylene and trifluoroethylene, etc. Different materials also affect the stability of the drug and the friction between the piston. Polypropylene has a low friction coefficient, which can reduce friction and avoid the side effects of the drug solution, while trifluoroethylene can better protect some drugs that are sensitive to materials. The bottom gasket 1, the ring groove 2, the sealing ring 3 and the top groove 10 are arranged, and the sealing operation is performed by arranging the sealing ring 3 on the inner wall of the groove. The ring groove 2 is a groove with a large amount of space inside, which can alleviate thermal expansion. In addition, the top groove 10 on the surface of the bottom gasket 1 can also alleviate the thermal expansion effect that occurs during work. At the same time, the sealing ring 3 is used to seal the surface of the bottom gasket 1, and once the sealing ring 3 ages, the sealing ring 3 is directly removed and replaced for easy operation.

[0022] Embodiment 2, which is different from Embodiment 1 mainly in that: a three-way injection sealing rubber gasket, a heat dissipation ring 4 is fixedly connected to the top of the bottom gasket 1, a through hole 5 is provided on the surface of the heat dissipation ring 4, a top gasket 6 is fixedly connected to the top of the heat dissipation ring 4, a leak-proof annular gasket 7 is fixedly connected to the surface of the top gasket 6, and the design of the leak-proof annular gasket 7 can reduce the gap between the piston and the wall of the syringe tube, so that the fluidity of the liquid medicine is better and the accuracy of drug delivery is ensured, a through groove 8 is provided in the middle of the top gasket 6, and the through groove 8 is circular in shape, and the top of the top gasket 6 is fixedly connected to The contact pad 9 is conical in shape. After the injection is completed, the medicine liquid will remain in the pipe and the piston of the syringe. The conical shape of the piston can reduce the gap between the piston and the pipe, so that the residual medicine liquid is less, and the risk of drug waste and overinjection is effectively avoided. The heat dissipation ring 4 and the top gasket 6 are set, and holes and grooves are opened on the surface of the rubber pad so that the heat can be quickly dissipated outward during the pulling process. Through the setting of the contact pad 9, the sealing pad can have less residual medicine liquid during use with the injection tube, which effectively avoids the risk of drug waste and overinjection.

[0023] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0024] During operation, the sealing rubber pad is placed in the injection mold as a whole. The heat generated during the pushing and pulling process is dissipated outward through the through groove 8, the through hole 5 and the top groove 10. While pushing and pulling, the sealing ring 3 and the leak-proof annular gasket 7 can prevent liquid droplets from overflowing.

[0025] 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.

[0026] 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 three-way injection molding sealing rubber gasket, comprising a bottom gasket (1), characterized in that: An annular groove (2) is provided on one side of the surface of the bottom gasket (1); a sealing ring (3) is movably sleeved on the inner wall of the annular groove (2); the sealing ring (3) is made of polypropylene; a top groove (10) is provided on the top of the bottom gasket (1); a heat dissipation ring (4) is fixedly connected to the top of the bottom gasket (1); and a through hole (5) is provided on the surface of the heat dissipation ring (4).

2. A three-way injection piece sealing rubber pad according to claim 1, characterized in that: A top gasket (6) is fixedly connected to the top of the heat dissipation ring (4), and a leak-proof annular gasket (7) is fixedly connected to the surface of the top gasket (6).

3. A three-way injection piece sealing rubber pad according to claim 2, characterized in that: A through groove (8) is provided in the middle of the top gasket (6), and the through groove (8) is circular in shape.

4. A three-way injection piece sealing rubber pad according to claim 2, characterized in that: A contact pad (9) is fixedly connected to the top of the top gasket (6), and the contact pad (9) is conical in shape.

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