Aseptic filling needle tube connector capable of preventing exposure

Abstract

The utility model discloses an anti-exposure sterile filling needle tube connector which comprises an external thread connector and an upper hollow head fixed at the top end of the external thread connector, a sealing cover is detachably installed at the center position of the top end of the upper hollow head, and a supporting disc is fixed at one end in the external thread connector. A needle head body is installed in the supporting disc, the top end of the needle head body extends into the sealing cover, and a sheath is installed at one end in the external thread connector in a sliding mode and used for isolating the needle head body from the external space. According to the utility model, the filling needle head is always in a relatively closed state, so that the filling quality and the use safety of probiotic products are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of needle tube connectors for liquid bags, in particular to an aseptic filling needle tube connector which can prevent exposure. Background Art

[0002] Currently, it is used in biological experiments and the food industry to add probiotics such as lactic acid bacteria and lactoferrin. The filling needle is required to remain sterile during storage and use to prevent the filling needle from being used to contaminate the probiotics with bacteria and cause product quality problems. The probiotic filling needle currently used in the industry has a plastic sheath. When using the filling needle, the needle sheath needs to be removed and discarded, and then the needle is inserted into the probiotic liquid bag connection port (the liquid bag connection port has a rubber plug, and the needle is directly inserted). In this process, the filling needle will be directly exposed to the outside air, but most of the use occasions are not clean places, that is, there are a large number of microorganisms, dust and other pollution sources in the external environment. In the process of removing the sheath and inserting the filling needle into the liquid bag connection port, it is easy to be affected by the surrounding environment, causing microorganisms to adhere to the surface of the needle, which will pose a potential threat to the quality and safety of the probiotic product. Utility Model Content

[0003] The utility model aims to provide a sterile filling needle tube connection joint which can prevent exposure, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sterile filling needle tube connection joint that prevents exposure, comprising an externally threaded joint and an upper hollow head fixed at the top of the externally threaded joint, and a sealing cover is detachably installed at the center position of the top of the upper hollow head, a support disk is fixed to one end inside the externally threaded joint, and a needle body is installed inside the support disk, and the top of the needle body extends to the inside of the sealing cover, a sheath is slidably installed at one end inside the externally threaded joint, the sheath is used to isolate the needle body from the external space, and the top of the sheath passes through the support disk and extends to the inside of the upper hollow head.

[0005] Preferably, two symmetrical winglets are fixed on the outer wall of the upper hollow head, and reinforcing ribs with equal spacing are installed on the front and rear outer walls of the winglets.

[0006] Preferably, the sheath is made of polypropylene, and the outer diameter of the sheath gradually decreases from one end close to the external threaded joint to the other end.

[0007] Preferably, the external threaded joint and the top of the upper hollow head are respectively provided with a primary elastic reset structure and a secondary elastic reset structure for preventing the sheath from moving upward.

[0008] Preferably, the primary elastic reset structure includes an annular rib fixed to one end of the sheath surface, and four coil springs installed at equal intervals on the top of the annular rib, and the top of the coil spring is fixedly connected to the top of the external threaded joint.

[0009] Preferably, the secondary elastic reset structure includes an arc-shaped slide fixed on both sides of the top of the sheath, and a guide disk installed on the top of the two arc-shaped slides, the top of the arc-shaped slide passes through the outside of the support disk, and the interior of the guide disk is provided with a through hole that is concentric with the support disk and the needle body, and the secondary elastic reset structure also includes a conical spring installed on the top of the upper hollow head, and the bottom end of the conical spring is fixedly connected to the top of the guide disk.

[0010] Compared with the prior art, the beneficial effect of the utility model is that the aseptic filling needle tube connection joint that prevents exposure is provided with a needle body and a sheath and other structures that cooperate with each other. When the liquid bag and the connection head are connected, the filling needle is not exposed to the outside air during the connection process and will not be affected by external pollutants, so that the sterility of the probiotic product during the filling process is effectively protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0012] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0013] Figure 3 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0014] Figure 4 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0015] Figure 5 It is a schematic diagram of the three-dimensional structure of the external threaded joint of the utility model;

[0016] In the figure: 1, external threaded joint; 2, upper hollow head; 3, wing; 301, reinforcing rib; 4, sealing cover; 5, support plate; 6, needle body; 7, sheath; 8, primary elastic reset structure; 801, annular rib; 802, spiral spring; 9, secondary elastic reset structure; 901, conical spring; 902, arc-shaped slide; 903, guide plate; 904, through hole. DETAILED DESCRIPTION

[0017] 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. 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.

[0018] See also Figure 1-5 The utility model provides an embodiment: a sterile filling needle tube connection joint for preventing exposure, comprising an external threaded joint 1 and an upper hollow head 2 fixed at the top of the external threaded joint 1, and a sealing cover 4 is detachably installed at the center position of the top of the upper hollow head 2, a support disk 5 is fixed at one end inside the external threaded joint 1, and a needle body 6 is installed inside the support disk 5, and the top of the needle body 6 extends to the inside of the sealing cover 4, and a sheath 7 is slidably installed at one end inside the external threaded joint 1, and the sheath 7 is used to isolate the needle body 6 from the external space, and the top of the sheath 7 passes through the support disk 5 and extends to the inside of the upper hollow head 2, and the sheath 7 and the external threaded joint 1 form an effective seal for the needle body 6 to achieve the purpose of isolating air;

[0019] After the needle body 6 pierces the sheath 7, the staff unscrews the sealing cap 4, so that the top opening of the needle body 6 leaks out. At this time, the probiotics can be injected into the probiotic liquid bag through the needle body 6, or the probiotics can be discharged from the probiotic liquid bag through the needle body 6;

[0020] The sheath 7 is made of polypropylene, and the outer diameter of the sheath 7 gradually decreases from one end close to the external threaded connector 1 to the other end. Since the sheath 7 has a larger diameter at one end, it can be better installed on the external threaded connector 1, while the smaller diameter at the other end can be more easily matched with the fluid bag connection port;

[0021] Two symmetrical wings 3 are fixed on the outer wall of the upper hollow head 2, and reinforcing ribs 301 with equal spacing are installed on the front and rear outer walls of the wings 3. The design of the wings 3 provides better grip and controllability, making it easier for users to grasp and use the connection connector, thereby quickly completing the connection operation of the needle and the fluid bag;

[0022] The tops of the external threaded joint 1 and the upper hollow head 2 are respectively provided with a primary elastic reset structure 8 and a secondary elastic reset structure 9 for preventing the sheath 7 from moving upward;

[0023] When the sheath 7 is blocked by the baffle in the fluid bag connection port and moves upward, the primary elastic reset structure 8 and the secondary elastic reset structure 9 are deformed accordingly until the needle body 6 penetrates into the fluid bag. When the external threaded connector 1 is screwed out of the fluid bag connection port, the secondary elastic reset structure 9 and the primary elastic reset structure 8 force the sheath 7 to reset, and at this time the sheath 7 covers the needle body 6 again.

[0024] The primary elastic reset structure 8 includes an annular rib 801 fixed to one end of the surface of the sheath 7, and four coil springs 802 installed at equal intervals at the top of the annular rib 801, and the top of the coil spring 802 is fixedly connected to the top of the external threaded joint 1;

[0025] The secondary elastic reset structure 9 includes an arc-shaped slide 902 fixed on both sides of the top of the sheath 7, and a guide plate 903 installed on the top of the two arc-shaped slides 902. The top of the arc-shaped slide 902 passes through the outside of the support plate 5, and the interior of the guide plate 903 is provided with a through hole 904 which is concentric with the support plate 5 and the needle body 6. The secondary elastic reset structure 9 also includes a conical spring 901 installed on the top of the upper hollow head 2, and the bottom end of the conical spring 901 is fixedly connected to the top of the guide plate 903. When the sheath 7 moves upward, the sheath 7 drives the annular retaining edge 801, the arc-shaped slide 902 and the guide plate 903 to move upward. At this time, the spiral spring 802 and the conical spring 901 are in a compressed state, and the through hole 904 allows relative sliding between the guide plate 903 and the needle body 6.

[0026] When the embodiment of the present application is used, the user first takes out the connector and the probiotic liquid bag to be used. At this time, the needle body 6 is protected by the sheath 7. The sheath 7 and the external threaded connector 1 form an effective seal for the needle body 6 to achieve the purpose of isolating the air. The sheath 7 can be retreated into the external threaded connector 1 and can also be pulled out by force. When the external threaded connector 1 and the internal threaded connector of the probiotic liquid bag are connected, as the external threaded connector 1 is continuously screwed, the sheath 7, the needle body 6 and other components will gradually penetrate into the probiotic liquid bag. In this process, the sheath 7 is blocked by the baffle in the liquid bag connection port. The sheath 7 continuously retreats to the external threaded joint 1, that is, the sheath 7 at this time will gradually move up under the action of the baffle, and the needle body 6 pierces the sheath 7 and at the same time pierces the rubber plug in the liquid bag connection port and enters the liquid bag, thereby effectively filling and transporting. During this connection process, the sheath 7 is not completely removed, but is blocked by the baffle in the external threaded joint 1, which can prevent the needle body 6 from direct contact with the external environment and reduce the possibility of contamination. In this way, the sterility of the probiotic product during the filling process is effectively protected, and the quality and safety of the product are improved.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A sterile filling needle tube connection joint that prevents exposure, characterized in that: The invention comprises an external threaded joint (1) and an upper hollow head (2) fixed at the top of the external threaded joint (1), wherein a sealing cover (4) is detachably mounted at the center position of the top of the upper hollow head (2), a support plate (5) is fixed at one end inside the external threaded joint (1), and a needle body (6) is mounted inside the support plate (5), the top of the needle body (6) extends to the inside of the sealing cover (4), a sheath (7) is slidably mounted at one end inside the external threaded joint (1), the sheath (7) is used to isolate the needle body (6) from the external space, and the top of the sheath (7) passes through the support plate (5) and extends to the inside of the upper hollow head (2).

2. The exposure-proof aseptic filling needle tube connector according to claim 1, characterized in that: Two mutually symmetrical winglets (3) are fixed on the outer wall of the upper hollow head (2), and reinforcing ribs (301) with equal spacing are installed on the front and rear outer walls of the winglets (3).

3. The exposure-proof aseptic filling needle tube connector according to claim 1, characterized in that: The sheath (7) is made of polypropylene, and the outer diameter of the sheath (7) gradually decreases from one end close to the external threaded joint (1) to the other end.

4. The exposure-proof aseptic filling needle tube connector according to claim 1, characterized in that: The tops of the external threaded joint (1) and the upper hollow head (2) are respectively provided with a primary elastic reset structure (8) and a secondary elastic reset structure (9) for preventing the sheath (7) from moving upward.

5. The exposure-proof aseptic filling needle tube connector according to claim 4, characterized in that: The primary elastic reset structure (8) comprises an annular rib (801) fixed to one end of the surface of the sheath (7), and four coil springs (802) installed at equal intervals on the top of the annular rib (801), and the top of the coil spring (802) is fixedly connected to the top of the external threaded joint (1).

6. The exposure-proof aseptic filling needle tube connector according to claim 4, characterized in that: The secondary elastic reset structure (9) includes an arc-shaped slide (902) fixed on both sides of the top of the sheath (7), and a guide plate (903) installed on the top of the two arc-shaped slides (902), the top of the arc-shaped slide (902) penetrates to the outside of the support plate (5), and the inside of the guide plate (903) is provided with a through hole (904) which is concentric with the support plate (5) and the needle body (6). The secondary elastic reset structure (9) also includes a conical spring (901) installed on the top of the upper hollow head (2), and the bottom end of the conical spring (901) is fixedly connected to the top of the guide plate (903).

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