Veterinary syringe one-way valve

Abstract

A one-way valve of a veterinary syringe comprises a medicine source and a syringe body, the syringe body is provided with a liquid suction pipeline and a liquid drainage pipeline, the liquid suction pipeline is communicated with the liquid drainage pipeline, the liquid drainage pipeline comprises an injection push rod, an injection scale bin, a liquid outlet and a connector, a one-way valve element is arranged between the connector and the liquid outlet, and the one-way valve element is communicated with the injection push rod. The one-way valve element is detachably connected with the liquid outlet. Through the integral design of the one-way valve core, the one-way valve core is arranged at the liquid outlet, so that one-way conduction and detachable connection of the liquid discharge pipeline can be realized, overall replacement is extremely convenient, assembly is convenient, one-way liquid flow control is realized more conveniently, and stability is high.

Description

Technical Field

[0001] This utility model relates to the field of livestock equipment technology, specifically to a one-way valve for a veterinary syringe. Background Technology

[0002] Veterinary syringes are the primary instruments for vaccinating poultry and large livestock or injecting other medications. Generally, veterinary syringes are single-headed, requiring a plunger to pull back the piston, drawing in the medication using negative pressure, and then dragging the plunger to inject the medication into the animal. This method represents a relatively early type of syringe. Currently, continuous syringes have emerged, utilizing the unidirectional nature of the syringe to ensure that the suction port and injection port do not interfere with each other, enabling continuous injection. For example, the veterinary vial-type continuous syringe disclosed in Chinese patent document number 202223539593.8 uses this method. While this type of syringe achieves continuous injection, it has the following problems: the unidirectional structure is complex to assemble, parts are easily lost, and once the unidirectional structure at the suction port and injection port becomes blocked, it is difficult to inspect and replace.

[0003] Therefore, we continue to provide a simple, easy-to-install, and foolproof one-way valve for veterinary syringes. Summary of the Invention

[0004] The purpose of this invention is to provide a simple, easy-to-install, and foolproof one-way valve for veterinary syringes, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A one-way valve for a veterinary syringe includes a drug source and a syringe body. The syringe body is provided with a suction line and a discharge line. The suction line is connected to the discharge line. The discharge line includes an injection plunger, an injection scale chamber, a discharge port, and a connector. A one-way valve core is provided between the connector and the discharge port. The one-way valve core is detachably connected to the discharge port.

[0007] The one-way valve core includes a front cover, a rear cover, and a valve body. The front cover and the rear cover form a valve cavity, and the valve body is disposed in the valve cavity. The front cover and the rear cover are detachably connected, and the front cover and the rear cover are located between the connector and the liquid outlet.

[0008] The liquid outlet is provided with a receiving cavity, and the one-way valve core is disposed in the receiving cavity. When the connector is connected to the liquid outlet, the inner wall of the connector abuts against the one-way valve core.

[0009] The connector is threadedly connected to the outlet, and the connector has an outlet channel that communicates with the liquid outlet of the one-way valve core. The connector seals the one-way valve core against the accommodating cavity.

[0010] The liquid suction line includes a liquid suction connector and a liquid inlet line. The liquid inlet line is connected to the injection scale chamber. A one-way valve core is provided between the liquid suction connector and the liquid inlet line. The liquid inlet line is provided with a receiving cavity. The liquid suction connector seals the one-way valve core in the receiving cavity. The rear cover abuts against the liquid suction connector. The front cover is connected to the liquid inlet line.

[0011] The valve body includes a spring, a plug, and a valve cap. The plug includes a fixed post and a plunger. One end of the spring is sleeved with the fixed post, and the other end is sleeved with the connecting pipe of the front cover. The fixed post is inserted into the connecting pipe. The valve cap matches the plunger. The valve cap and the plunger are sealed by a sealing ring. The plunger and the rear cover form a liquid flow channel, which is output through the liquid outlet provided on the front cover.

[0012] The plunger has a recess, and when the spring is sleeved on the fixed post, the end of the spring is locked in the recess.

[0013] The front end of the plunger is connected to the valve cap in a concave-convex fit.

[0014] The outer ring of the one-way valve core is provided with a first sealing ring that is sealed to the inner wall of the liquid outlet.

[0015] The one-way valve core is provided with a second sealing ring on its outer side, which is sealed to the liquid suction connector.

[0016] The beneficial effects of this utility model are:

[0017] The one-way valve core is designed as a whole and can be placed at the outlet to achieve one-way flow of the drain pipe. It is detachable and easy to replace as a whole. It is easy to assemble and makes it more convenient to control the one-way liquid flow with high stability. Attached Figure Description

[0018] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2This is a schematic diagram of the exploded structure of the syringe body of this utility model;

[0021] Figure 3 This is an exploded view of the valve core of this utility model;

[0022] Figure 4 This is a schematic diagram of the valve core of this utility model exploded from another direction;

[0023] Figure 5 This is a cross-sectional view of the syringe body of this utility model;

[0024] Figure 6 This is a magnified view of point A;

[0025] Figure 7 This is a magnified view of point B.

[0026] Explanation of reference numerals in the attached figures:

[0027] Drug source 1, syringe body 2,

[0028] 3. Liquid outlet; 301. First accommodating cavity; 4. Injection plunger; 5. Injection graduated chamber.

[0029] Valve core 6, front cover 601, connecting pipe 6011, slot 6012, fluid outlet 6013, spring 602, plug 603, fixing post 6031, plunger 6032, recess 60321, inverted cone 60322

[0030] Valve cap 604, rear cover 605, extension 6051, first sealing ring 606, second sealing ring 607, liquid inlet pipe 7, second accommodating cavity 701, liquid suction connector 8, connector 9. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0035] A one-way valve for a veterinary syringe, such as Figures 1 to 7 As shown, the syringe includes a drug source 1 and a syringe body 2. The syringe body 2 is provided with a suction line and a discharge line. The suction line is connected to the discharge line. The discharge line includes an injection plunger 4, an injection scale chamber 5, a discharge port 3, and a connector 9. A one-way valve core 6 is provided between the connector 9 and the discharge port 3. The one-way valve core 6 is detachably connected to the discharge port 3 to facilitate replacement or cleaning of the one-way valve core 6.

[0036] The connection between the connector 9 and the outlet 3 refers to the transmission path of the liquid medicine from the outlet 3 to the connector 9, which passes through the one-way valve core 6. The method of fixing is within the scope of this application.

[0037] This application uses a separate design for the one-way valve core, which is independent of the liquid outlet 3 of the connector 9 of the transmission device. It can be replaced or disassembled as a whole during use, which greatly facilitates the maintenance of the syringe. At the same time, the independent one-way valve core 6 structure can also prevent the loss of parts. The modular design can greatly facilitate the user's assembly and use of the parts.

[0038] like Figure 3 As shown, the one-way valve core 6 includes a front cover 601, a rear cover 605 and a valve body. The front cover 601 and the rear cover 605 form a valve cavity. The valve body is disposed in the valve cavity. The front cover 601 and the rear cover 605 are detachably connected. The front cover 601 and the rear cover 605 are located between the connector 9 and the liquid outlet 3.

[0039] This application uses the design of the front cover 601 and the rear cover 605 to form a valve cavity, which fixes the valve body in the valve cavity, realizing the overall replacement of the valve body. The valve cavity can also be stably fixed with the liquid outlet 3, making assembly simple.

[0040] The front cover 601 and the rear cover 605 are independent of the connector 9 and the outlet 3, and are designed to be detachable, which facilitates the replacement or cleaning of the parts and avoids affecting the performance. At the same time, the modular design simplifies the maintenance of the syringe or one-way valve.

[0041] like Figure 5 , Figure 6 As shown, the liquid outlet 3 is provided with a first accommodating cavity 301, the one-way valve core 6 is disposed in the first accommodating cavity 301, and when the connector 9 is connected to the liquid outlet 3, the inner wall of the connector 9 abuts against the one-way valve core 6.

[0042] The connector 9 is threadedly connected to the outlet 3. The connector 9 is provided with an outlet channel that is connected to the liquid outlet 6013 of the one-way valve core 6. The connector 9 seals the one-way valve core 6 against the first accommodating cavity 301.

[0043] The inner cavity of connector 9 is smaller than the diameter of front cover 601. Therefore, when assembled, connector 9 can tightly abut against front cover 601, thereby sealing one-way valve core 6 at liquid outlet 3, forming a stable drainage channel and preventing overflow and leakage. The needle passes through the through hole in connector 9 and is connected to the liquid outlet of one-way valve core 6. The pressure of injection plunger 4 forces the liquid out through one-way valve core 6 and then injects it through the needle.

[0044] like Figure 5 , Figure 7 As shown, the liquid aspiration line includes a liquid aspiration connector 8 and a liquid inlet line 7. The liquid inlet line 7 is connected to the injection scale chamber 5. A one-way valve core 6 is provided between the liquid aspiration connector 8 and the liquid inlet line 7. The liquid inlet line 7 is provided with a second accommodating cavity 701. The liquid aspiration connector 8 seals the one-way valve core 6 in the second accommodating cavity 701. The rear cover 605 abuts against the liquid aspiration connector 8. The front cover 601 is connected to the liquid inlet line 7.

[0045] The one-way valve core 6 is detachably connected to the syringe body 2 and is provided with a receiving cavity for easy installation. The same size one-way valve body 6 can be used in the suction line and the discharge line, reducing costs.

[0046] like Figure 3 As shown, the valve body includes a spring 602, a plug 603, and a valve cap 604. The plug 603 includes a fixing post 6031 and a plunger 6032. One end of the spring 602 is sleeved with the fixing post 6031, and the other end is sleeved with the connecting pipe 6011 of the front cover 601. The fixing post 6031 is inserted into the connecting pipe 6011. The valve cap 604 matches the plunger 6032, and the valve cap 604 and the plunger 6032 are sealed by a sealing ring. The plunger 6032 and the rear cover 605 form a liquid flow channel, which is output through the liquid flow outlet 6013 provided on the front cover 601.

[0047] The plunger 6032 is provided with a recess 60321. When the spring 602 is sleeved on the fixed post 6031, the end of the spring 602 is stuck in the recess 60321.

[0048] The front end of the plunger 6032 is connected to the valve cap 604 in a concave-convex fit.

[0049] The valve cap 604 is snapped into the groove on the inner side of the rear cover 605.

[0050] When pressurized, the valve cap 604 drives the plunger 6032 and the fixed post 6031 to compress the spring 602. The fluid flows through the gap between the plunger 6032 and the rear cover 605 into the valve chamber, and then flows out through the fluid outlet 6013 into the connector. The circumferential direction of the plunger 6032 and the inner wall of the rear cover 604 form a fluid flow channel.

[0051] The outer ring of the one-way valve core 6 is provided with a first sealing ring 606, which is sealed to the inner wall of the liquid outlet 3.

[0052] A second sealing ring 607 is provided on the outer side of the one-way valve core 6 to seal and connect with the liquid suction connector 8. The first sealing ring 606 and the second sealing ring 607 prevent liquid from leaking through the gap between the one-way valve core 6 and the accommodating cavity.

[0053] The front cover 601 is provided with a slot 6012, and the rear cover 605 is provided with an extension 6051. The extension 6051 and the slot 6012 are interference fit, so as to realize the fixed connection between the front cover 601 and the rear cover 605.

[0054] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A one-way valve for a veterinary syringe, characterized in that: The device includes a drug source and a syringe body. The syringe body is provided with a suction line and a discharge line. The suction line is connected to the discharge line. The discharge line includes an injection plunger, an injection scale chamber, a discharge port, and a connector. A one-way valve core is provided between the connector core and the discharge port. The one-way valve core is detachably connected to the discharge port.

2. The one-way valve for a veterinary syringe according to claim 1, characterized in that: The one-way valve core includes a front cover, a rear cover, and a valve body. The front cover and the rear cover form a valve cavity, and the valve body is disposed within the valve cavity. The front cover and the rear cover are detachably connected, and the front cover and the rear cover are located between the connector and the liquid outlet.

3. The one-way valve for a veterinary syringe according to claim 2, characterized in that: The liquid outlet is provided with a receiving cavity, and the one-way valve core is disposed in the receiving cavity. When the connector is connected to the liquid outlet, the inner wall of the connector abuts against the one-way valve core.

4. The one-way valve for a veterinary syringe according to claim 3, characterized in that: The connector is threadedly connected to the outlet port. The connector is provided with an outlet channel that communicates with the liquid outlet of the one-way valve core. The connector seals the one-way valve core against the accommodating cavity.

5. A one-way valve for a veterinary syringe according to claim 2, characterized in that: The liquid suction line includes a liquid suction connector and a liquid inlet line. The liquid inlet line is connected to the injection scale chamber. A one-way valve core is provided between the liquid suction connector and the liquid inlet line. The liquid inlet line is provided with a receiving cavity. The liquid suction connector seals the one-way valve core in the receiving cavity. The rear cover abuts against the liquid suction connector. The front cover is connected to the liquid inlet line.

6. A one-way valve for a veterinary syringe according to any one of claims 2 to 5, characterized in that: The valve body includes a spring, a plug, and a valve cap. The plug includes a fixed post and a plunger. One end of the spring is sleeved with the fixed post, and the other end is sleeved with the connecting pipe of the front cover. The fixed post is inserted into the connecting pipe. The valve cap matches the plunger. The valve cap and the plunger are sealed by a sealing ring. The plunger and the rear cover form a liquid flow channel, which is output through the liquid outlet provided on the front cover.

7. A one-way valve for a veterinary syringe according to claim 6, characterized in that: The plunger has a recess, and when the spring is sleeved on the fixed post, the end of the spring is locked in the recess.

8. A one-way valve for a veterinary syringe according to claim 6, characterized in that: The front end of the plunger is connected to the valve cap through a convex-concave fit.

9. A one-way valve for a veterinary syringe according to claim 1, characterized in that: The outer ring of the one-way valve core is provided with a first sealing ring that is sealed to the inner wall of the liquid outlet.

10. A one-way valve for a veterinary syringe according to claim 5, characterized in that: The outer side of the one-way valve core is provided with a second sealing ring, which is sealed to the liquid suction connector.

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