Liquid injection gun head

Abstract

The utility model discloses a liquid injection gun head which comprises a gun head body internally provided with a liquid channel, a liquid inlet of the liquid channel is arranged at the upper end of the gun head body, and a liquid outlet of the liquid channel is arranged at the lower end of the gun head body. In the liquid channel, an adjusting assembly used for adjusting liquid flow, a non-return assembly used for preventing liquid backflow and a detection assembly used for detecting the liquid flow are sequentially arranged in the direction from the liquid inlet to the liquid outlet. The internal structure of the liquid injection gun head is improved, the flow of liquid output by the liquid injection gun head can be accurately and flexibly adjusted by additionally arranging the adjusting assembly and the non-return assembly, and the detection assembly continuously detects the flow of the liquid in the liquid injection gun head, so that the stability in the liquid injection process is remarkably improved, and the liquid injection efficiency is improved. Therefore, product quality is improved, and liquid filling requirements of special materials are met.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid filling gun heads, in particular to a liquid filling gun head. Background Art

[0002] Liquid filling is a common industrial production process, widely used in various industries. The demand for liquid filling is inconsistent among different industries, which has led to the development of various liquid filling equipment for liquid filling.

[0003] In the modified material industry, in order to increase or improve the flame retardancy, high strength, impact resistance, high hardness and other properties of the material, or to reduce certain properties, liquid is usually added to the material through the liquid filling process for filling. For example, various liquid additives and liquid raw materials with different properties are added to the resin for filling, so that the material can obtain the required properties. In order for the liquid filling equipment to smoothly add liquid raw materials or liquid additives to the material, the liquid filling equipment is generally equipped with a liquid filling gun head.

[0004] In the prior art, the injection gun head is generally designed as a simple structure for guiding the output of liquid. In the production of special materials, when liquid additives or liquid raw materials need to be added, and there are high precision requirements for injection flow and injection stability during the production process, the traditional injection gun head is difficult to meet the requirements of injection flow stability. The use of traditional injection gun heads for production may affect the production quality of the product due to liquid reflux or liquid flow fluctuations. Therefore, the existing injection gun heads cannot meet the liquid filling requirements of high-precision processing.

[0005] In view of this, it is necessary to provide a liquid injection gun head that can maintain a stable flow rate to meet the requirements of high-precision liquid injection processing. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiency of the prior art that the liquid injection gun head cannot meet the requirements of high-precision and stable liquid injection, and to provide a liquid injection gun head with an internal adjustment component, a check component and a detection component, so as to detect and adjust the liquid flow, thereby achieving accurate and smooth liquid injection to meet the needs of high-precision liquid injection processing.

[0007] The technical solution of the utility model provides a liquid injection gun head, comprising a gun head body with a liquid channel inside, the liquid inlet of the liquid channel is arranged at the upper end of the gun head body, and the liquid outlet of the liquid channel is arranged at the lower end of the gun head body;

[0008] In the liquid channel, a regulating component for regulating the liquid flow, a check component for preventing liquid backflow, and a detection component for detecting the liquid flow are arranged in sequence from the liquid inlet to the liquid outlet.

[0009] In one of the optional technical solutions, the check assembly includes a check valve core and a reset member connected to the check valve core, the reset member has a fixed end fixed relative to the position of the liquid channel and a movable end movable relative to the liquid channel, and the movable end is connected to the check valve core.

[0010] In one of the optional technical solutions, the liquid channel is provided with a first fixed baffle and a second fixed baffle, the adjustment component is provided on the first fixed baffle, and the detection component is provided on the second fixed baffle.

[0011] In one of the optional technical solutions, the check assembly also includes a valve stem, both ends of which are respectively inserted into the first fixed baffle and the second fixed baffle, the check valve core is movably sleeved on the valve stem, and the fixed end of the reset member is fixedly connected to the second fixed baffle.

[0012] In one of the optional technical solutions, a narrowing opening is provided between the first fixed baffle and the second fixed baffle in the liquid channel, the diameter of the narrowing opening is smaller than the diameter of the liquid channel, and the check valve core is movably clamped under the narrowing opening.

[0013] In one of the optional technical solutions, the upper surface of the check valve core is an arc-shaped surface that bulges upward, and the side surface of the narrowed opening is an arc-shaped surface that matches the check valve core.

[0014] In one of the optional technical solutions, the regulating assembly includes a flow regulating ring and an regulating member for adjusting the flow regulating ring, the lower end of the flow regulating ring is connected to the first fixed baffle, and the upper end of the flow regulating ring is connected to the regulating member.

[0015] In one of the optional technical solutions, the adjusting member is a locking nut, the upper end of the valve stem has a threaded portion, the flow regulating ring is sleeved on the valve stem, and the locking nut is screwed to the threaded portion.

[0016] In one of the optional technical solutions, the detection component includes a flow sensor arranged on the second fixed baffle.

[0017] In one of the optional technical solutions, the gun head body includes a connector for connecting an infusion pipeline, a conversion connecting tube and an injection head for adding liquid, which are arranged in sequence from top to bottom. The outer sides of the connector and the injection head are respectively provided with connection slots for easy assembly and disassembly.

[0018] The above technical solution has the following beneficial effects:

[0019] The liquid injection gun head provided by the utility model is internally provided with an adjustment component, a check component and a detection component. The liquid flow inside the liquid channel is adjusted by the adjustment component, the internal liquid backflow is prevented by the check component, and the liquid flow in the liquid channel is detected in real time by the detection component, thereby making the flow regulation more accurate. The utility model can achieve the effects of detecting flow, adjusting flow and stabilizing flow, so as to meet the demand for high-precision liquid filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0021] Figure 1 A schematic diagram of the internal structure of a liquid injection gun head provided in one embodiment of the utility model.

[0022] Reference numerals in the figures:

[0023] 1. Gun head body; 11. Liquid inlet; 12. Liquid outlet; 13. Liquid channel; 131. Narrowing mouth; 14. Connector; 15. Conversion connecting tube; 16. Liquid injection head; 17. Connecting slot;

[0024] 2. Adjustment assembly; 21. First fixed baffle; 22. Flow adjustment ring; 23. Adjustment member;

[0025] 3. Check assembly; 31. Valve stem; 32. Check valve core; 33. Reset member;

[0026] 4. Detection component; 41. Second fixed baffle; 42. Flow sensor. DETAILED DESCRIPTION

[0027] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. The same parts are represented by the same figure numbers. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0028] like Figure 1 As shown, an injection gun tip provided by an embodiment of the utility model includes a gun tip body 1 having a liquid channel 13 inside, a liquid inlet 11 of the liquid channel 13 is arranged at the upper end of the gun tip body 1, and a liquid outlet 12 of the liquid channel 13 is arranged at the lower end of the gun tip body 1.

[0029] In the liquid channel 13, a regulating component 2 for regulating the liquid flow, a non-return component 3 for preventing the liquid from flowing back, and a detection component 4 for detecting the liquid flow are arranged in sequence from the liquid inlet 11 to the liquid outlet 12.

[0030] Among them, one end of the injection gun head with a liquid inlet 11 needs to be connected to an external infusion pipeline, and one end of the injection gun head with a liquid outlet 12 needs to extend into the material or instrument to be filled, so as to guide the liquid in the external infusion pipeline and inject it into the corresponding material or instrument.

[0031] Preferably, the gun head body 1 includes a connector 14 for connecting the infusion pipeline, a conversion connecting tube 15, and a liquid injection head 16 for filling the liquid, which are arranged in sequence from top to bottom. By setting the gun head body 1 as a three-stage detachable structure, the adjustment component 2, the check component 3, and the detection component 4 inside the liquid injection gun head can be more easily installed, disassembled, adjusted, debugged, and replaced. The connector 14, the conversion connecting tube 15, and the liquid injection head 16 are respectively connected reliably and detachably by threads, and the connection is tight and liquid leakage is not easy to occur.

[0032] Furthermore, the outer side surfaces of the connector 14 and the injection head 16 are respectively provided with connection slots 17 for convenient assembly and disassembly. Through the connection slots 17, a quick and tight clamping connection is achieved. A sealing ring can be provided in the connection slots 17, and the sealing ring can be made of ERDM, NBR or FPM materials with good corrosion resistance and high temperature resistance. The connection slots 17 are opened around the outer periphery of the connector 14 and the injection head 16, and the cross-section of the connection slots 17 is trapezoidal. Preferably, the groove depth of the connection slots 17 is 2mm. The provision of the connection slots 17 simplifies the installation and disassembly process of the injection gun head, so that the user can quickly replace or maintain the injection gun head, thereby improving work efficiency. Preferably, the groove bottom of the connection slot 17 can be provided with threads, so that after the connector 14 and the injection head 16 are respectively clamped with the external components, they can be further fixedly connected by threads to ensure the stability and sealing of the connection.

[0033] In summary, the purpose of the present invention is to provide a liquid injection gun head with an adjustment component 2, a check component 3 and a detection component 4 disposed therein, wherein the liquid flow inside the liquid channel 13 is adjusted by the adjustment component 2, the internal liquid backflow is prevented by the check component 3, and the liquid flow in the liquid channel 13 is detected in real time by the detection component 4, thereby making the flow regulation more accurate. Therefore, the present invention can achieve the effects of detecting flow, adjusting flow and stabilizing flow through creative structural improvements, so as to meet the needs of high-precision liquid filling.

[0034] In one embodiment, Figure 1As shown, the check assembly 3 includes a check valve core 32 and a reset member 33 connected to the check valve core 32 . The reset member 33 has a fixed end fixed relative to the liquid channel 13 and a movable end movable relative to the liquid channel 13 . The movable end is connected to the check valve core 32 .

[0035] In this embodiment, by configuring the check assembly 3 to include a check valve core 32 that can move in the liquid channel 13 and a reset member 33 that can reset the check valve core 32, the check valve core 32 can be opened when the liquid flows, and automatically closed by the reset member 33 when the liquid stops flowing, thereby effectively preventing the liquid from flowing back. The coordinated use of the check valve core 32 and the reset member 33 provides a simple and effective mechanism to prevent liquid backflow, ensuring that the liquid flows unidirectionally in the liquid channel 13 during the injection process. Preferably, the reset member 33 is a reset spring sleeved on the valve stem 31, the reset spring is made of 55CrSiA, the upper end of the reset spring is pressed against the lower end of the check valve core 32, and the lower end of the reset spring is pressed against the upper end of the second fixed baffle 41.

[0036] In one embodiment, Figure 1 As shown, the first fixed baffle 21 and the second fixed baffle 41 are arranged in the liquid channel 13, the adjustment component 2 is arranged on the first fixed baffle 21, and the detection component 4 is arranged on the second fixed baffle 41. Among them, the first fixed baffle 21 and the second fixed baffle 41 are both hollow structures in the middle, so that the liquid can smoothly pass through the first fixed baffle 21 and the second fixed baffle 41, and the outer sides of the first fixed baffle 21 and the second fixed baffle 41 are connected to the inner wall of the liquid channel 13.

[0037] In this embodiment, by setting the first fixed baffle 21 and the second fixed baffle 41 in the liquid channel 13, arranging the adjustment component 2 on the first fixed baffle 21, and the detection component 4 on the second fixed baffle 41, the adjustment component 2 and the detection component 4 can be stably installed in the liquid channel 13, so that the adjustment component 2 and the detection component 4 are respectively fixed relative to the liquid channel 13, thereby ensuring the precise control of the liquid flow and the accuracy of real-time monitoring of the liquid flow. The provision of the first fixed baffle 21 and the second fixed baffle 41 provides a stable installation platform, so that the adjustment component 2 and the detection component 4 can be accurately and stably installed at the corresponding positions in the liquid channel 13, thereby improving the reliability of liquid flow regulation and real-time detection.

[0038] In one embodiment, Figure 1 As shown, the check assembly 3 also includes a valve stem 31, the two ends of which are respectively inserted into the first fixed baffle 21 and the second fixed baffle 41, the check valve core 32 is movably sleeved on the valve stem 31, and the fixed end of the reset member 33 is fixedly connected to the second fixed baffle 41.

[0039] In this embodiment, the valve stem 31 is arranged at the center of the liquid channel 13. The arrangement of the valve stem 31 provides stable support and guidance for the check valve core 32, thereby ensuring that the check valve core 32 can maintain an accurate position in the liquid channel 13 and achieve the movement required to prevent liquid backflow, and prevent the check valve core 32 from touching the inner wall of the liquid channel 13 when it is displaced in the liquid channel 13. Therefore, the structural stability of the check assembly 3 is enhanced by arranging the valve stem 31, so that the check valve core 32 can flexibly respond when the liquid flows, and reliably close when the liquid backflows, and the valve stem 31 can ensure that the check assembly 3 continues to operate normally and stably in the liquid channel 13.

[0040] In one embodiment, Figure 1 As shown, a narrowing opening 131 is provided between the first fixed baffle 21 and the second fixed baffle 41 in the liquid channel 13 . The diameter of the narrowing opening 131 is smaller than the diameter of the liquid channel 13 , and the check valve core 32 is movably engaged below the narrowing opening 131 .

[0041] In this embodiment, the check valve core 3 can ensure the reliability of preventing liquid backflow by setting the narrowed opening 131, and the check valve core 32 can be clamped on the narrowed opening 131 to ensure the position accuracy of the check valve core 32 and the reset reliability of the reset member 33. The check valve core 32 cooperates with the narrowed opening 131. Since the diameter of the narrowed opening 131 is smaller than the diameter of the liquid channel 13, that is, the opening area of ​​the narrowed opening 131 is smaller than the cross-sectional area of ​​the liquid channel 13, the check valve core 32 can move freely in the liquid channel 13 to avoid affecting the normal flow of the liquid. When the liquid flows back, the check valve core 32 can be pushed by the refluxed liquid and tightly block the narrowed opening 131. In addition, the design of the narrowed opening 131 can also increase the resistance to liquid flow, help stabilize the liquid flow and provide additional control points for flow regulation, thereby assisting the regulating component 2 to more finely control the flow rate of the liquid.

[0042] In one embodiment, Figure 1 As shown, the upper surface of the check valve core 32 is an arc-shaped surface that bulges upward, and the side surface of the narrowed opening 131 is an arc-shaped surface that matches the check valve core 32 .

[0043] In this embodiment, the check valve core 32 can cooperate more closely with the narrowed opening 131 to improve the sealing performance. The matching design of the arc surface improves the sealing effect of the check valve core 32 and ensures that there will be no liquid leakage when the liquid stops flowing. Among them, a valve cap is set on the check valve core 32, and the upper surface of the valve cap is set as an upwardly protruding arc surface. The structure of the valve cap can be set as a truncated cone valve cap to prevent the backflow of liquid materials, and the valve cap can also be set as an umbrella-shaped structure. When the liquid in the liquid channel 13 flows forward, the liquid impacts the arc surface at the upper end of the check valve core 32 to push the check valve core 32 to move downward, and the liquid can flow downward from the outer periphery of the check valve core 32. When the liquid refluxes, it will impact the check valve core 32 from bottom to top, so that the check valve core 32 moves upward, so that the arc surface is tightly attached to and completely blocks the narrowed opening 131, and the effect of preventing liquid backflow is reliably achieved.

[0044] In one embodiment, Figure 1 As shown, the regulating assembly 2 includes a flow regulating ring 22 and a regulating member 23 for adjusting the flow regulating ring 22 . The lower end of the flow regulating ring 22 is connected to the first fixed baffle 21 , and the upper end of the flow regulating ring 22 is connected to the regulating member 23 .

[0045] In this embodiment, the flow adjustment ring 22 and the adjustment member 23 are used together to allow the user to adjust the liquid flow rate as needed. The user controls the liquid flow diameter of the flow adjustment ring 22 by operating the adjustment member 23, thereby accurately adjusting the target liquid flow rate. The design of the flow adjustment ring 22 and the adjustment member 23 provides an intuitive and easy-to-operate flow adjustment method, allowing the user to easily adjust the flow rate according to actual needs.

[0046] In one embodiment, Figure 1 As shown, the adjusting member 23 is a locking nut, the upper end of the valve stem 31 has a threaded portion, the flow regulating ring 22 is sleeved on the valve stem 31, and the locking nut is screwed to the threaded portion.

[0047] In this embodiment, the adjusting member 23 is set as a locking nut to ensure that the flow regulating ring 22 is fixed in the adjusted position to prevent the adjustment failure caused by vibration and the like. By setting the adjusting key as a locking nut, the overall stability and reliability of the adjusting assembly 2 can be improved, and the locking nut can be easily screwed. The precise stroke of the locking nut is matched with the flow regulating ring 22, and the adjustment accuracy is high, ensuring the durability and accuracy of the flow regulation. Preferably, the connector 14, the valve stem 31 and the locking nut are all made of 304 stainless steel to meet the requirements of strength, stability and corrosion resistance in the material of the injection gun tip.

[0048] When the user needs to screw the locking nut to adjust the flow rate of the liquid in the valve, the user can use a 22mm open-end wrench to separate the conversion connecting tube 15 and the injection head 16, and then use a 5.5mm open-end wrench to screw the locking nut to adjust the flow rate of the valve core.

[0049] In one of the optional technical solutions, such as Figure 1 As shown, the detection assembly 4 includes a flow sensor 42 arranged on the second fixed baffle 41 .

[0050] In this embodiment, the use of the flow sensor 42 can realize real-time monitoring and feedback of the liquid flow, and provide data support for flow control. The flow sensor 42 is arranged on the second fixed baffle 41 to improve the intelligence level of the liquid injection gun head, making the flow control more accurate and automatic. Preferably, the detection accuracy of the flow sensor 42 is 0.1% to meet the demand for accurate flow regulation during liquid filling. When there is a large deviation in the flow in the liquid channel 13 or an internal fault occurs, the flow sensor 42 can send a remote alarm signal to the outside.

[0051] Furthermore, other sensors can be set on the second fixed baffle 41 to obtain information such as liquid density, gas content, temperature, pH value, etc. in the liquid channel 13, so as to obtain more detailed real-time information of the liquid material, so as to better cooperate with the accuracy of liquid flow control output by the injection gun head, and further cooperate with automatic flow control.

[0052] In summary, the utility model is provided with an adjustment component 2, which allows the user to finely adjust the flow rate of the added liquid according to actual needs. This adjustment capability is crucial for application scenarios that require precise control of the liquid dosage. The function of the check component 3 is to ensure that the liquid can only flow in one direction during the injection process, and to prevent the liquid from flowing back when the injection is stopped or the pressure changes. This feature is crucial to preventing cross-contamination and ensuring the internal cleanliness of the equipment, and also protects the injection system from damage by reverse pressure. By adding a detection component 4, such as a flow sensor 42 or other element that can detect the internal liquid flow, the flow information of the liquid can be monitored and fed back in real time, and other types of detection elements can be added to obtain information such as the density, gas content, temperature, and pH value of the liquid. This real-time monitoring function is particularly important for automated control systems. It can be combined with a control system to achieve automated regulation and optimization of liquid flow, thereby improving production efficiency and the accuracy of process control.

[0053] The structural improvement of the utility model not only improves the accuracy of flow control, but also enhances the stability and reliability of the entire injection system. By integrating the functions of the adjustment component 2, the check component 3 and the detection component 4, the injection gun head of the utility model can meet the needs of high-precision liquid filling. Whether in scientific research, medical treatment or industrial production, accurate control of liquid dosage is the key to improving product quality and production efficiency. In addition, by preventing liquid reflux and accurately controlling the flow rate, the injection gun head provided by the utility model can significantly reduce operating risks and enhance the safety of operators.

[0054] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0055] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the protection scope of the present invention.

Claims

1. A liquid injection gun head, characterized in that: It comprises a gun head body (1) having a liquid channel (13) inside, wherein a liquid inlet (11) of the liquid channel (13) is arranged at the upper end of the gun head body (1), and a liquid outlet (12) of the liquid channel (13) is arranged at the lower end of the gun head body (1); In the liquid channel (13), a regulating component (2) for regulating the liquid flow, a non-return component (3) for preventing liquid backflow, and a detection component (4) for detecting the liquid flow are arranged in sequence from the liquid inlet (11) to the liquid outlet (12).

2. The injection gun head according to claim 1, characterized in that: The check assembly (3) comprises a check valve core (32) and a reset member (33) connected to the check valve core (32); the reset member (33) comprises a fixed end fixed relative to the position of the liquid channel (13) and a movable end movable relative to the liquid channel (13); the movable end is connected to the check valve core (32).

3. The injection gun head according to claim 2, characterized in that: A first fixed baffle (21) and a second fixed baffle (41) are arranged in the liquid channel (13), the adjustment component (2) is arranged on the first fixed baffle (21), and the detection component (4) is arranged on the second fixed baffle (41).

4. The liquid injection gun head according to claim 3, characterized in that: The check assembly (3) further comprises a valve stem (31), the two ends of which are respectively inserted into the first fixed baffle (21) and the second fixed baffle (41), the check valve core (32) is movably sleeved on the valve stem (31), and the fixed end of the reset member (33) is fixedly connected to the second fixed baffle (41).

5. The liquid injection gun head according to claim 3, characterized in that: A narrowing opening (131) is provided between the first fixed baffle (21) and the second fixed baffle (41) in the liquid channel (13); the diameter of the narrowing opening (131) is smaller than the diameter of the liquid channel (13); and the check valve core (32) is movably engaged below the narrowing opening (131).

6. The injection gun head according to claim 5, characterized in that: The upper surface of the check valve core (32) is an arc-shaped surface that bulges upward, and the side surface of the narrowed opening (131) is an arc-shaped surface that matches the check valve core (32).

7. The liquid injection gun head according to claim 4, characterized in that: The regulating assembly (2) comprises a flow regulating ring (22) and an regulating member (23) for adjusting the flow regulating ring (22); the lower end of the flow regulating ring (22) is connected to the first fixed baffle (21), and the upper end of the flow regulating ring (22) is connected to the regulating member (23).

8. The liquid injection gun head according to claim 7, characterized in that: The regulating member (23) is a locking nut, the upper end of the valve stem (31) has a threaded portion, the flow regulating ring (22) is sleeved on the valve stem (31), and the locking nut is screwed to the threaded portion.

9. The liquid injection gun head according to claim 3, characterized in that: The detection assembly (4) comprises a flow sensor (42) arranged on the second fixed baffle (41).

10. The liquid injection gun head according to any one of claims 1 to 9, characterized in that: The gun head body (1) comprises a connecting head (14) for connecting to a liquid infusion pipeline, a conversion connecting tube (15) and a liquid injection head (16) for injecting liquid, which are arranged in sequence from top to bottom. The outer sides of the connecting head (14) and the liquid injection head (16) are respectively provided with connecting card slots (17) for easy assembly and disassembly.

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