TWI702064B - Long nozzle for dual mixing syringe and dual mixing syringe - Google Patents

Abstract

The present invention relates to the field of medical equipment, in particular to a long spray head for a dual-mixing syringe and a dual-mixing syringe. On the one hand, the connecting piece outlet joint of the connecting piece for the dual mixing syringe forms an outlet step structure, and the long nozzle inlet of the long nozzle for the duplex mixing syringe forms an inlet step structure corresponding to the outlet step structure, so that the long nozzle of the long nozzle The inlet part can be assembled with the connector outlet joint of the connector in a sealed manner and receive the liquid from the connector, so that the connector can be fitted and connected with the long spray head; on the other hand, the connector for the dual mixing syringe It can also be connected with short nozzles. In this way, the connecting piece for the dual mixing syringe of the present invention can be used in both the spraying type and the cavity mirror type, and the connecting piece and the long spray head can be accurately docked in a simple manner.

Description

Long nozzle for dual mixing syringe and dual mixing syringe

The present invention relates to the field of medical equipment, in particular to a long spray head for a dual-mixing syringe and a dual-mixing syringe.

In the prior art, the same dual mixing syringe cannot be used for both spraying type (installing a short nozzle) and cavity mirror type (installing a long nozzle), so the same dual mixing syringe cannot be used as needed. It is often necessary to configure both spray-type special double mixing syringes and endoscope type special double mixing syringes at the same time, and only one of the specific types of double mixing syringes can be used as needed. This will not only cause unnecessary waste, but also increase the cost. Or, when the user needs to switch the use mode of the dual mixing syringe, manually remove the two single barrel syringes from one type of dual mixing syringe, and then reassemble it into another type of dual mixing syringe. The operation is extremely inconvenient and increases the risk of failure. Therefore, the existing dual hybrid syringe cannot switch between the spray type and the cavity mirror type. It is extremely necessary to design a connecting piece for a dual mixing syringe that can be used for both spraying and cavity mirrors and can be quickly switched.

In addition, in the prior art, although the spraying-type dual-mixing syringe is convenient to use, the nozzle can be replaced during use to solve the problem of nozzle clogging after a pause, but the cavity mirror-type dual-mixing syringe generally cannot replace the nozzle, requiring doctors to not replace the nozzle Stop using all the medicine, otherwise once it stops, it will be blocked and there will be no way to continue using it. Therefore, it is extremely necessary to design a cavity mirror nozzle (long nozzle) that can be replaced at any time during use.

The present invention has been made based on the problems that need to be solved in the prior art.

An inventive object of the present invention is to provide a dual-use dual mixing syringe connector, which can be connected to a long nozzle or a short nozzle, so that spraying and spraying types can be switched conveniently and quickly. Two use modes of cavity mirror type.

Another objective of the present invention is to provide a long spray head for a dual mixing syringe, which can be conveniently and accurately docked with the above-mentioned connecting member for a dual mixing syringe.

Another objective of the present invention is to provide a dual mixing syringe, which includes the above-mentioned connecting piece for the dual mixing syringe and/or the long nozzle for the dual mixing syringe.

The present invention provides a connector for a dual mixing syringe as follows. The connector includes a connector body, a connector outlet joint protruding from the connector body to the outlet side, and a connector from the connector body. The connector inlet connector protruding toward the inlet side, the connector outlet connector is used for assembling with a short nozzle or a long nozzle, the connector inlet connector is used for assembling with a single barrel syringe, at the connector outlet connector, The first liquid outlet portion through which the first liquid from one single-barrel syringe flows and the second liquid outlet portion through which the second liquid from the other single-barrel syringe flows are arranged side by side in a manner that is not connected to each other , And the first liquid outlet portion extends closer to the outlet side than the second liquid outlet portion, so that the end surface of the first liquid outlet portion on the outlet side is closer than the end surface of the second liquid outlet portion on the outlet side The outlet side, so that the connector outlet joint forms an outlet step structure.

In some embodiments, the outer peripheral surface of the connector outlet joint is formed with an external thread portion, so that the connector outlet connector constitutes a male luer connector structure; and/or the connector inlet connector is configured to communicate with The female Luer joint structure of the single barrel syringe assembly is described.

In some embodiments, the end surface of the external thread portion is flush with the end surface on the outlet side of the second liquid outlet portion.

In some embodiments, the external thread part is a double-start thread part.

In some embodiments, the outer peripheral surface of the outlet joint of the connector is formed with a first groove for installing the annular first sealing ring.

In some embodiments, the connecting member further includes a first branching portion shared by the first liquid outlet portion and the second liquid outlet portion, the flow path of the first liquid outlet portion and the second liquid outlet portion The flow path of the liquid outlet part is separated by the first branch part.

In some embodiments, the first branch portion extends to be flush with the end surface of the first liquid outlet portion on the outlet side.

In some embodiments, the end surface on the outlet side of the first liquid outlet portion and the end surface on the outlet side of the first branch portion jointly form a second groove for installing the annular second sealing ring.

In some embodiments, the cross-sectional shape of the first liquid inlet portion and the cross-sectional shape of the second liquid inlet portion are both circular; and/or the cross-sectional shape of the first liquid outlet portion and the The cross-sectional shapes of the two liquid outlet portions are both semicircular.

In some embodiments, the distance between the end surface on the outlet side of the first liquid outlet portion and the end surface on the outlet side of the second liquid outlet portion is 0.5 mm to 20 mm.

In some embodiments, the connecting member includes a first liquid conveying pipeline and a second liquid conveying pipeline extending inside the main body portion of the connecting member, and the connection of the first liquid conveying pipeline is The part of the main body part of the element protruding to the outlet side constitutes the first liquid outlet part, and the part of the first liquid conveying pipe that protrudes from the main body part of the connector to the inlet side constitutes the first liquid inlet part , The part of the second liquid conveying pipeline that protrudes from the main body of the connector to the outlet side constitutes the second liquid outlet, and the second liquid conveying pipeline extends from the main body of the connector to the outlet side. The protruding part on the inlet side constitutes the second liquid inlet portion, and the first liquid conveying line and the second liquid conveying line are directed from the first liquid inlet portion and the second liquid inlet portion The first liquid outlet portion and the second liquid outlet portion extend in a manner of gradually approaching each other.

In some embodiments, the second liquid inlet portion is configured to be spaced apart from the first liquid inlet portion by a predetermined distance.

In some embodiments, the connector includes a buckle portion extending from the main body portion of the connector toward the entrance side, and the buckle portion includes a buckle arm portion extending linearly and is disposed on the buckle. A buckle protrusion of the free end of the arm away from the main body of the connector.

The present invention also provides a long spray head for a dual mixing syringe as follows. The long spray head includes a first inlet portion and a second inlet portion arranged side by side with each other, and the second inlet portion extends more than the first inlet The end face of the second inlet part is closer to the inlet side than the end face of the first inlet part is closer to the inlet side, so that the long nozzle is formed to be compatible with any one of the above technical solutions. The inlet step structure of the connector outlet connector of the connector for the dual mixing syringe described in the solution matches the inlet step structure, so that the long nozzle can be assembled with the connector outlet connector of the connector and receive from the connector Liquid.

In some embodiments, the long nozzle includes a long nozzle inlet connector, and the long nozzle inlet connector includes a long nozzle inlet portion and is sleeved on the long nozzle inlet portion in a manner capable of rotating relative to the long nozzle inlet portion The inlet of the long nozzle is sleeved, and the inlet of the long nozzle includes the first inlet and the second inlet, so that the inlet of the long nozzle forms the inlet step structure.

In some embodiments, the end surface of the inlet side of the first inlet portion is provided with a second sealing ring, and when the inlet portion of the long nozzle and the outlet joint of the connector are assembled together, the first The two sealing rings abut against the second groove provided on the end surface of the first liquid outlet portion on the outlet side and the end surface of the first branch portion on the outlet side.

In some embodiments, the inlet portion of the long nozzle further includes a second diverging portion for separating the flow path of the first inlet portion and the flow path of the second inlet portion. The end surface on the entrance side is flush with the end surface on the entrance side of the first entrance portion.

In some embodiments, the long nozzle inlet sleeve has a cylindrical shape and is formed with an internal threaded portion that matches with the external threaded portion of the connector outlet joint, so that the long nozzle inlet joint is formed with the Female Luer connector structure matched with the outlet connector of the connector.

In some embodiments, the outer peripheral surface of the inlet portion of the long nozzle is further formed with a sealing protrusion protruding annularly toward the inlet portion of the long nozzle and abutting against the sleeve of the inlet portion of the long nozzle.

In some embodiments, the long nozzle further includes: a sheath tube, the inside of the sheath tube is formed with a first flow path and a second flow path that are separated from each other, and the inlet side end of the sheath tube is connected to The inlet portions of the long nozzle are fixed together so that the first flow path communicates with the flow path of the first inlet portion and the second flow path communicates with the flow path of the second inlet portion; and a nozzle, so The nozzle is installed at the end of the outlet side of the sheath tube so that the liquid flowing through the sheath tube is mixed at the nozzle and ejected from the nozzle.

In some embodiments, the sheath tube is further formed with a modeling cavity that is separated from the first flow path and the second flow path, and the modeling cavity contains a modeling cavity for modeling the The linear shaped body of the sheath, so that the sheath can bend and maintain a predetermined shape.

In some embodiments, the linear shaped body includes a linear shaped body body and a flat positioning portion provided at one end of the linear shaped body body and extending from the end face of the inlet side of the sheath, so The positioning part is fixed to the entrance part of the long nozzle.

In some embodiments, the positioning portion is embedded in the second branch portion of the inlet portion of the long nozzle.

In some embodiments, the length of the positioning portion in the cross section in the radial direction of the linear modeling body is greater than the diameter of the linear modeling body, and the positioning portion is in the linear shape The width in the cross section in the radial direction of the shaped body main body is smaller than the diameter of the linear shaped body main body.

In some embodiments, the main body of the linear shaped body is a metal wire.

In some embodiments, in the cross-section of the sheath tube taken along the radial direction, the cross-sectional shape of the first flow path and the cross-sectional shape of the second flow path are both arc-shaped and relative to the cross-section. The geometric center is center-symmetric.

In some embodiments, the axial centerline of the modeling cavity is consistent with the axial centerline of the sheath.

In some embodiments, the sheath tube is made of soft plastic or rubber.

In some embodiments, the inlet portion of the long nozzle and the sheath tube are integrally formed.

In some embodiments, the nozzle includes a nozzle body and a spiral speed increasing member, the spiral speed increasing member is housed in the nozzle body, and the nozzle body and the spiral speed increasing member are formed to pass through in the axial direction. A flow path, the flow path comprising: a pressure chamber, and at least two swirling acceleration channels extending spirally are formed in the pressure chamber so that the liquid flowing into the at least two swirling acceleration channels can form a swirling flow And accelerate; laminar flow path, the laminar flow path includes a converging part and at least three arc-shaped branch channels extending from the converging part toward the radially outer side in a scattering shape, the diameter of the converging part is smaller than the diameter of the pressure chamber The converging part communicates with the pressure chamber through the at least three arc-shaped branch passages, and the liquid from the pressure chamber can be further accelerated to flow into the converging part through the at least three arc-shaped branch passages to form Vortex; a shaft cavity, the diameter of the shaft cavity is smaller than the diameter of the pressure chamber, the shaft cavity is directly connected with the converging portion; and an injection cavity, the diameter of the injection cavity is smaller than the shaft The diameter of the cavity, the injection cavity is directly connected with the axial cavity, and the liquid from the axial cavity can flow into the injection cavity and be ejected from the injection cavity.

In some embodiments, the at least three arc-shaped branch channels are located at the same position in the axial direction and overlap with the converging portion in the axial direction.

In some embodiments, the cross-sectional area of each arc-shaped branch channel gradually decreases from one end of each arc-shaped branch channel communicating with the pressure chamber toward the other end communicating with the converging portion.

In some embodiments, each of the one ends is evenly distributed in the circumferential direction, and each of the other ends is evenly distributed in the circumferential direction.

In some embodiments, at the one end, the outer side wall forming each of the arc-shaped branch channels is tangent to the side wall forming the pressure chamber; and/or at the other end, each of the arcs is formed The outer side wall of the shaped branch channel is tangent to the side wall forming the converging part.

In some embodiments, the spiral speed increasing element is received in the pressure chamber and includes: a spiral speed increasing element body having a cylindrical shape extending along the axial direction, the spiral The axial end surface of the speed increasing element body presses against the axial end surface of the pressure chamber; and a plurality of external thread portions that protrude from the outer peripheral surface of the spiral speed increasing element main body toward the radially outer side Furthermore, the plurality of external thread portions extend in parallel and spirally to form the swirl flow acceleration channel between the plurality of external thread portions and the side wall forming the pressure chamber.

In some embodiments, the axial starting point and/or the end point of each of the external threaded portions are located between the two axial end surfaces of the main body of the spiral speed increaser.

In some embodiments, a recess for forming the converging portion is formed on the end surface of the pressure chamber of the nozzle body, and the diameter of the spiral speed increasing member body is larger than the diameter of the converging portion, so that The main body of the spiral speed increasing member is pressed against the end surface.

In some embodiments, the nozzle body further includes a mounting cavity for engaging with other components, and the mounting cavity communicates with the pressure cavity and is located on an axial side of the pressure cavity.

In some embodiments, the diameter of the installation cavity is smaller than the diameter of the sheath tube, so that the sheath tube and the nozzle body are assembled together in an interference fit.

In some embodiments, the flow channel further includes a spray hole portion, the spray hole portion communicates with the spray cavity, and the cross-sectional area of the spray hole portion gradually increases from the spray cavity.

In some embodiments, the ratio of the diameter of the jet cavity to the diameter of the axial cavity is in the range of 1:4 to 2:3, and/or the diameter of the converging part of the laminar flow channel and the diameter of the The diameter of the axial cavity is equal, and the ratio of the size of the laminar flow channel in the axial direction to the size of the axial cavity in the axial direction is 1:1.

The present invention also provides a dual mixing syringe as follows, the dual mixing syringe comprising: a connecting piece for a duplex mixing syringe according to any one of the above technical solutions; and an outlet joint part of the connecting piece The short nozzle for the connected dual mixing syringe and/or the long nozzle for the dual mixing syringe described in any one of the above technical solutions connected to the outlet joint of the connecting piece; two single barrel syringes, so The two single-cylinder syringes are connected with the connector inlet joint of the connector; and a fixing frame, which is used to fix the two single-cylinder syringes and is fixed together with the connector.

In some embodiments, the short nozzle includes a nozzle body and a spiral speed increasing member received in the nozzle body, and the nozzle body is the nozzle body according to any one of the above technical solutions and is formed with The external thread part of the connector outlet joint of the connector is matched with the internal thread part, and the spiral speed increasing member is the spiral speed increasing member described in any one of the above technical solutions.

In some embodiments, the fixing frame has a T-shaped structure, and the fixing frame includes a transverse portion extending along the transverse direction and a longitudinal portion extending from a substantially central portion in the transverse direction of the transverse portion along the longitudinal direction. The transverse portion is formed with two mounting holes arranged along the transverse direction, and the two single-cylinder syringes are respectively inserted into the two mounting holes and installed in the two mounting holes.

In some embodiments, the single-cylinder syringe includes a liquid storage portion and a push-pull rod capable of piston movement in the liquid storage portion, and the liquid storage portion includes a cylindrical liquid storage portion main body and a liquid storage portion provided on the liquid storage portion. The outlet portion and flange portion of the reservoir of the main body, the outlet portion of the reservoir is assembled with the connector inlet joint of the connector, and when the single-cylinder syringe is installed in the holder, the The flange part abuts against the lateral part.

In some implementations, the lateral portion further includes at least two limiting portions provided on both lateral sides of each of the mounting holes, and the limiting portions are clamped to the flange portion so that the single The barrel syringe is fixed to the fixing frame.

In some embodiments, the distance between the limiting portion and the central axis of the corresponding mounting hole is smaller than the maximum distance between the outer contour of the flange portion and the central axis.

In some embodiments, the outer contour of the flange portion is oblong, and the linear portion of the outer contour of the flange portion is clamped to the limiting portion.

In some embodiments, the outlet portion of the liquid storage portion forms a male Luer connector structure that matches with the female Luer connector structure of the connector inlet connector of the connector.

In some embodiments, the two longitudinal portions extend opposite to each other, and free ends of the two longitudinal portions away from the transverse portion form longitudinal portion bumps protruding toward each other, so that the longitudinal portion The projection block is engaged with the buckle part of the connecting piece to fix the relative position of the fixing frame and the connecting piece at least in the longitudinal direction.

In some embodiments, the dual mixing syringe further includes a push-pull rod connecting plate installed on the operating parts of the push-pull rods of the two single-tube syringes so that the operating parts of the push-pull rods are always Align and link.

In some embodiments, the single-barrel syringe is a single-barrel syringe pre-packaged with a liquid, and the single-barrel syringe has an identification message corresponding to the packaged liquid.

In some embodiments, the inlet step structure of the inlet of the long nozzle through the long nozzle is matched with the outlet step structure of the connector outlet joint of the connector, so that the first inlet of the inlet of the long nozzle and The first liquid outlet part of the outlet joint of the connector is accurately butted and the second inlet part of the inlet part of the long nozzle is accurately butted with the second liquid outlet of the outlet joint of the connector.

By adopting the above technical solution, the present invention provides a novel connecting piece for a double mixing syringe, a novel long nozzle for a double mixing syringe, and a double mixing syringe including the connecting piece and/or the long nozzle. The connecting piece for the dual mixing syringe of the present invention can be used for both spraying type and cavity mirror type, and the two use modes can be quickly switched by only changing different nozzles. The connecting piece can be directly adapted to the short nozzle. The spraying type double mixing syringe can also be matched with the long nozzle for the double mixing syringe of the present invention to form a cavity mirror type double mixing syringe; in addition, the connector outlet joint of the connector forms an outlet step structure, corresponding to the above double The inlet of the long nozzle of the long nozzle for the joint mixing syringe forms an inlet step structure corresponding to the outlet step structure of the outlet joint of the connector, so that the joint for the double mixing syringe and the long nozzle for the double mixing syringe can be realized in a simple manner Accurate docking avoids the premature mixing of the liquid medicine due to the misalignment of the connection between the connector and the long nozzle.

The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings of the specification. It should be noted that in the present invention, "longitudinal" refers to the length direction of the dual mixing syringe according to the present invention (left and right direction in FIG. 1a), and "lateral" refers to the width of the dual mixing syringe according to the present invention. Direction (up and down direction in Figure 1a); in addition, for each component of the dual mixing syringe according to the present invention, the "inlet side" refers to the upstream side of the flow direction of the liquid in the component (the left side in Figure 1a), "Outlet side" refers to the downstream side of the flow direction of the liquid in the component (right side in Figure 1a).

Hereinafter, the structure of the dual mixing syringe according to the first embodiment of the present invention will be described with reference to the drawings.

(Structure of the dual mixing syringe according to the first embodiment of the present invention)

As shown in Figure 1a and Figure 1b, the dual mixing syringe according to the first embodiment of the present invention includes a short nozzle (ultra-low pressure swirl atomizing nozzle) 1, a connecting piece 2, two single barrel syringes 3, and a fixing frame 4 And push-pull rod connecting plate 5.

Specifically, the short spray head 1 is installed on the connecting piece 2 and communicates with the liquid outlet of the connecting piece 2. The liquid inlet of the connecting piece 2 is communicated with the liquid outlet of the two single-cylinder syringes 3, so that both the two single-cylinder syringes 3 communicate with the short spray head 1 through the connecting piece 2. The two single-tube syringes 3 are arranged side by side and fixed by the fixing frame 4, and the fixing frame 4 and the connecting piece 2 are clamped together. The push-pull rods of the two single-tube syringes 3 are fixed to the push-pull rod connecting plate 5 together, so that the push-pull rods of the two single-tube syringes 3 can be linked.

In this way, different kinds of liquids in the two single-cylinder syringes 3 flow into the short spray head 1 through the connecting member 2 through the push of the push-pull rod, and are finally sprayed out in a mist state. The short spray head 1 and the connecting piece 2 can also be sealed to connect, so as to prevent the liquid from leaking between the short spray head 1 and the connecting piece 2. Therefore, the dual mixing syringe of this embodiment can realize the connection between the connecting member 2 and the short spray head 1, so that the dual mixing syringe can be used as a spraying type dual mixing syringe to achieve normal spraying functions.

Hereinafter, the structure of each component of the dual mixing syringe of this embodiment will be described in detail with reference to the drawings of the specification.

(Structure of short nozzle 1)

In this embodiment, the short nozzle 1 is cylindrical as a whole, and the short nozzle 1 has an axial, radial, and circumferential direction; one side of the axial direction refers to the right side in FIG. 2a, and the other side in the axial direction refers to the one shown in FIG. 2a. Left.

As shown in FIGS. 2a and 2b, the short nozzle 1 includes a nozzle body 11 and a spiral speed increasing member 12. The nozzle body 11 is formed in the nozzle body 11 in the axial direction A through the entire nozzle body 11 and communicated with a flow passage S and a mounting cavity M, wherein the flow passage S is for the liquid flowing into the short nozzle 1 to flow through, and the mounting cavity M is used to install in the double Connect the liquid outlet part of the connector 2 of the mixing syringe. The above-mentioned flow passage S includes a pressure chamber S1, a laminar flow passage S2, an axial cavity S3, a spray chamber S4, and a spray hole portion S5 that communicate with each other from one axial side toward the other side in the axial direction A, and the spiral increases The speed element 12 is accommodated in the pressure chamber S1 and forms a first swirl flow acceleration channel S11 and a second swirl flow acceleration channel S12 with the side wall forming the pressure chamber S1. In this way, the liquid flowing into the flow channel S of the short nozzle 1 will be sprayed in the pressure chamber S1 (the first swirling acceleration channel S11, the second swirling acceleration channel S12) → laminar flow channel S2 → axial cavity S3 → injection cavity S4 → The holes S5 flow sequentially, and are finally sprayed in the spray hole S5 in a mist state.

In this embodiment, the nozzle main body 11 includes a large diameter portion 111 and a small diameter portion 112, and the outer diameter of the large diameter portion 111 is larger than the outer diameter of the small diameter portion 112. The mounting cavity M is formed in the large diameter portion 111, and the flow path S is formed in the small diameter portion 112. In this way, when the diameter of the mounting cavity M is larger than the maximum diameter of each component of the flow channel S, the side wall forming the flow channel S in the small diameter portion 112 will not be too thick.

In this embodiment, as shown in FIGS. 3a and 3b, the speed-increasing screw 12 is a double-ended screw and includes a main body 121 of the speed-increasing member and two external thread portions (a first external thread portion 122A and a second external thread). Section 122B).

The speed increaser main body 121 has a cylindrical shape extending along the axial direction A. In this embodiment, the diameter of the speed increasing element main body 121 is larger than the diameter of the following converging portion S21 (see FIG. 5b) of the laminar flow channel S2, and the end face pressure on the other axial side of the speed increasing element main body 121 Abutting against the end surface on the other axial side of the pressure chamber S1, so that the converging portion S21 of the laminar flow channel S2 and the pressure chamber S1 communicate only through the arc-shaped branch channel S22; the axial side of the spiral speed increasing member 121 The end surface of S is slightly protruded into the mounting cavity M from the pressure chamber S1. In this embodiment, preferably, the diameter of the spiral speed increasing element main body 121 is about 2 mm and the length in the axial direction A is about 4.6 mm.

The first external threaded portion 122A and the second external threaded portion 122B both protrude from the outer peripheral surface of the speed increaser main body 121 toward the radially outer side, and the respective external threaded portions 122A, 122B of the speed increaser 12 and the forming pressure chamber S1 The side walls are tightly fitted; further, the first external thread portion 122A and the second external thread portion 122B are parallel to each other and extend spirally. In this way, two swirling acceleration passages (the first swirling acceleration passage S11 and the second swirling acceleration passage S12) are formed between the two external thread portions 122A, 122B and the side wall forming the pressure chamber S1. In this embodiment, preferably, the thread lift angles of the first external thread portion 122A and the second external thread portion 122B are both 60 degrees, the thread pitch is 5 mm, and the thread width is 1.4 mm.

In addition, the start point and the end point in the axial direction A of both the first externally threaded portion 122A and the second externally threaded portion 122B are located between the two end surfaces in the axial direction A of the speed increaser body 121. In other words, the end surfaces on the axial side of both the first externally threaded portion 122A and the second externally threaded portion 122B are located on the other side in the axial direction than the end surface on the one side of the screw body 121 in the axial direction. The end surfaces on the other side in the axial direction of both the first externally threaded portion 122A and the second externally threaded portion 122B are located on the one side in the axial direction than the end surface on the other side in the axial direction of the screw body 121. The end surfaces on the axial side of both the first external thread portion 122A and the second external thread portion 122B are parallel to the end surface on the axial side of the screw body 121, the first external thread portion 122A and the second external thread The end surface on the other axial side of the two portions 122B is parallel to the end surface on the other axial side of the helical gear main body 121. In this embodiment, preferably, the distance between the end surface on the axial side of both the first external thread portion 122A and the second external thread portion 122B and the end surface on the axial side of the screw body 121 The distance between the end surface on the other side in the axial direction of the first external thread portion 122A and the second external thread portion 122B and the end surface on the other side in the axial direction of the speed-increasing element main body 121 are equal, and both are 0.3 mm .

The specific structure of the runner S and the mounting cavity M of the short nozzle 1 will be described below.

After the flow channel S of the short nozzle 1 receives the mixed liquid from the connecting member 2, the liquid will be accelerated and pressurized multiple times in the flow channel S and finally sprayed out in a mist state. As described above, the flow channel S penetrates the small diameter portion 112 of the short nozzle 1 in the axial direction A. The flow channel S includes a pressure chamber S1, a laminar flow channel S2, an axial cavity S3, a spray chamber S4, and a spray hole S5. In the flow passage S, the flow flows in the order of pressure chamber S1 → laminar flow passage S2 → axial cavity S3 → injection chamber S4 → injection hole S5.

In this embodiment, as shown in FIG. 4a, the pressure chamber S1 has a cylindrical shape as a whole, and the end on one axial side of the pressure chamber S1 is directly connected with the end on the other axial side of the mounting cavity M. As shown in Figures 4b and 4c, through the spiral speed increasing member 12 contained in the pressure chamber S1 and the side wall forming the pressure chamber S1 formed spirally extending parallel to each other first swirling acceleration channel S11 and second The swirling flow accelerating passage S12 causes the liquid flowing into the pressure chamber S1 to form a swirling flow and be accelerated through the first swirling flow accelerating passage S11 and the second swirling accelerating passage S12.

Using the inertial acceleration principle of the swirling acceleration channels S11 and S12, after the liquid passes through the swirling acceleration channels S11 and S12, the flow velocity and pressure increase, and the liquid has been accelerated before reaching the arc branch channel S22 of the laminar flow channel S2. Even if the initial pressure of the liquid is insufficient, the liquid can obtain sufficient speed and pressure after passing through the swirl acceleration channels S11 and S12, so as to ensure a uniform atomization effect during spraying.

In this embodiment, as shown in FIG. 5b, the laminar flow channel S2 includes a converging portion S21 and, for example, three arc-shaped branch channels S22 extending from the converging portion S21 toward the radially outer side in a scattering shape. The convergent part 21 is cylindrical as a whole and the diameter of the convergent part S21 is smaller than the diameter of the pressure chamber S1. The convergent part S21 communicates with the pressure chamber S1 through three arc-shaped branch channels S22, and the liquid from the pressure chamber S1 only passes through the three arc-shaped branch channels S22 It is further accelerated to flow into the converging part S21, and a vortex is formed at the converging part S21.

The three arc-shaped branch channels S22 are located at the same position in the axial direction A and overlap with the converging portion S21 in the axial direction A. Each arc branch channel S22 has the same arc shape and is arranged convexly toward the same side in the circumferential direction. The cross-sectional area of each arc-shaped branch channel S22 gradually decreases from one end of each arc-shaped branch channel S22 communicating with the pressure chamber S1 to the other end communicating with the converging portion S21. Each end is evenly distributed in the circumferential direction, and each other end is evenly distributed in the circumferential direction.

Further, the outer side wall forming each arc-shaped branch channel S22 is tangent to the side wall forming the converging portion S21 and the side wall forming the pressure chamber S1, so that the liquid forming the swirling flow in the pressure chamber S1 can smoothly pass through the arc branch. The channel S22 flows into the converging part S21. Preferably, the size of the entire laminar flow channel S2 in the axial direction A ranges from 0.2 mm to 1.0 mm, and the diameter of the converging portion S21 ranges from 0.3 mm to 2.0 mm.

In order to facilitate manufacturing, a recess is formed on the end surface of the nozzle body 11 forming the pressure chamber S1, and the spiral speed-increasing member main body 121 of the spiral speed-increasing member 12 and the recess surround the arc-shaped branch passage S22.

Preferably, the diameter of the converging portion S21 of the laminar channel S2 is equal to the diameter of the axial cavity S3, and the size of the laminar channel S2 in the axial direction A is the same as the size of the axial cavity S3 in the axial direction A The ratio is 1:1.

As shown in Figure 5c, the axial cavity S3 is cylindrical as a whole. The diameter of the axial cavity S3 is smaller than the diameter of the pressure cavity S1 and equal to the diameter of the converging portion S21 of the laminar flow channel S2. The axial cavity S3 and the converging portion S21 are in the axial Connect directly to A. The liquid from the pressure chamber S1 flows into the axial cavity S3 after passing through the three arc-shaped branch passages S22 and the converging part S21. Preferably, the diameter of the axial cavity S3 ranges from 0.3 mm to 2.0 mm, and the size in the axial direction A ranges from 0.3 mm to 2.0 mm.

In this embodiment, as shown in FIG. 5d, the injection cavity S4 is cylindrical as a whole, the diameter of the injection cavity S4 is smaller than the diameter of the axial cavity S3, and the injection cavity S4 and the axial cavity S3 are directly connected in the axial direction A. The liquid in the shaft cavity S3 can be ejected from the ejection cavity S4. Preferably, the diameter of the injection cavity S4 is 0.2 mm to 0.5 mm, and the ratio of the diameter of the injection cavity S4 to the diameter of the axial cavity S3 ranges from 1:4 to 2:3.

In this way, the laminar flow channel S2, the axial cavity S3 and the jet cavity S4 having the above-mentioned specific structure form the shape shown in FIG. 5a, so that the liquid from the pressure chamber S1 permeates the laminar flow channel S2 to form a vortex while passing through the layer. The flow channel S2, the axial cavity S3 and the jet cavity S4 form a sudden cross-section acceleration, which finally makes the liquid obtain sufficient pressure, thereby ensuring a uniform atomization effect during jetting.

In this embodiment, the injection hole portion S5 has a conical shape as a whole, the end of the injection hole portion S5 on the axial side communicates with the injection cavity S4 in the axial direction A, and the injection hole portion S5 extends from the injection cavity S4 toward the other in the axial direction. One side extends to the end surface on the other axial side of the short nozzle 1, and the cross-sectional area of the injection hole portion S5 gradually increases from the injection cavity S4 to the end surface on the other axial side of the short nozzle 1. In this way, the liquid ejected from the ejection chamber S4 can smoothly spread in a mist state along the ejection hole portion S5 toward the outside of the short ejection head 1.

Further, in this embodiment, as described above, the mounting cavity M is in communication with the pressure cavity S1 and is located on the axial side of the pressure cavity S1, and the diameter of the mounting cavity M is larger than the diameter of the pressure cavity S1.

As shown in FIG. 2a, at the part close to the end of the mounting cavity M on the other side in the axial direction, an internal threaded portion M2 is formed on the side wall forming the mounting cavity M, and the internal threaded portion M2 is used for connecting with the connecting piece. 2 For installation, the connecting member 2 can be pressed against the spiral speed increasing member 12 in the axial direction A, so that the spiral speed increasing member 12 tightly presses against the end surface of the pressure chamber S1 on the other axial side. Preferably, the internal threaded part M2 is a double-threaded part. Therefore, under the same circumstances, the double-threaded part can be tightened by half the number of turns than the ordinary single-threaded part, which saves assembly time. The doubled thread pitch can effectively reduce the problem of misalignment of the thread and the wrong screwing. The following double-threaded part has the same advantage. In addition, an annular groove M1 for installing the seal ring is formed on the end surface on the other axial side of the mounting cavity M. In this embodiment, the cross section of the annular groove M1 in the radial direction R is triangular. The annular groove M1 is used to install a sealing ring to prevent liquid leakage in the installation cavity M.

By adopting the above-mentioned structure, the liquid can reach a preset pressure after the liquid flows into the axial cavity S3 through the pressure chamber S1 and the laminar flow channel S2. The short nozzle 1 of this embodiment stabilizes the cross-sectional area of the flow channel S through which the liquid flows to a small value, ensuring that the atomization parameters of the short nozzle 1 are stabilized under the conditions of use, so that the liquid can be sprayed stably in a mist state This reduces the impact on the performance of the precision atomized short nozzle 1 caused by the difference in the assembly process of the parts.

In this way, by using the above-mentioned short nozzle 1, the flow passage S of the short nozzle 1 forms a pressure chamber S1, a laminar flow passage S2, an axial cavity S3, and a spray chamber S4 with different cross-sectional areas and passes through the swirling acceleration passages S11, S12 and The arc-shaped branch channel S22 performs multiple swirling accelerations on the liquid in the flow channel S, which can increase the flow rate and pressure of the liquid in the flow channel S from both the cross-sectional sudden change and the swirling acceleration, so that even if the initial pressure of the liquid is at an ultra-low pressure Good atomization effect can also be obtained in the state.

The specific structure of the short nozzle 1 of the dual mixing syringe according to the first embodiment of the present invention has been described in detail above, and the structure of the connecting member 2 of the dual mixing syringe will be described below.

(Structure of connector 2)

In this embodiment, the connector 2 is located on the upstream side of the short spray head 1 in the direction of the liquid flow and on the downstream side of the two single-tube syringes 3 in the direction of the liquid flow. Two different liquids can flow in the connecting piece 2 and finally be delivered to the short nozzle 1. It should be noted that the left side in FIG. 7a is the outlet side, and the right side in FIG. 7b is the inlet side.

As shown in Figures 6a to 7b, the connector 2 includes a connector body 21, a connector outlet joint 22 protruding from the connector body 21 toward the outlet side, and a connector protruding from the connector body 21 toward the inlet side The component inlet connector 23 and the buckle portion 24 fixed to the connector inlet connector 23.

Specifically, in this embodiment, a cavity is formed inside the connector main body 21 and the cavity forms openings on both the inlet side and the outlet side, and the size of the opening on the inlet side of the connector main body 21 is larger than that of the connector main body. 21 is the size of the opening on the outlet side. The connector main body 21 has a substantially triangular cross-sectional shape in a cross-sectional view taken along the longitudinal direction of the connector 2 (the left-right direction in FIG. 7a) as shown in FIG. 7a. A first liquid conveying pipe 211 and a second liquid conveying pipe 212 are provided in the cavity inside the main body portion 21 of the connector.

In this embodiment, the first liquid delivery pipeline 211 is independent of the second liquid delivery pipeline 212. Both the first liquid conveying pipe 211 and the second liquid conveying pipe 212 have a curved shape extending substantially along the lateral (up-down direction in FIG. 7 a) edge of the connector main body 21. Since the first liquid conveying pipe 211 and the second liquid conveying pipe 212 respectively extend along the lateral edge of the connector main body 21, the first liquid conveying pipe 211 and the second liquid conveying pipe 212 are from the inlet side to the outlet side. The sides extend while approaching each other. In this way, without affecting the connection of the first liquid conveying pipe 211 and the second liquid conveying pipe 212 with the two spaced apart single-cylinder syringes 3, the first liquid conveying pipe 211 and the second liquid conveying pipe 211 are connected to each other. The liquids L1 and L2 (as shown in FIG. 7b) flowing in the path 212 can flow into the short nozzle 1 at the outlet side of the first liquid conveying pipe 211 and the second liquid conveying pipe 212 in a manner close to each other.

Further, the first liquid delivery pipeline 211 is formed with a first liquid inlet portion 2111 for connecting with a single-cylinder syringe 3 and a first liquid outlet portion 2110 for connecting with the short nozzle 1. The second liquid delivery line 212 is formed with a second liquid inlet portion 212I for connection with another single-cylinder syringe 3 and a second liquid outlet portion 212O for connection with the short nozzle 1.

On the one hand, the first liquid outlet portion 2110 and the second liquid outlet portion 212O protrude from the opening on the outlet side of the connector main body portion 21 toward the outlet side, and the first liquid outlet portion 2110 and the second liquid outlet portion 212O are adjacent to each other. The way is arranged side by side to form the connector outlet joint 22 for connecting with the short nozzle 1. The connector outlet connector 22 has a cylindrical shape as a whole, and at the connector outlet connector 22, the first liquid outlet portion 2110 extends closer to the outlet side than the second liquid outlet portion 212O, so that the connector outlet connector 22 forms an outlet step structure . It can also be said that the first liquid outlet portion 2110 is formed as a boss protruding from the end surface on the outlet side of the second liquid outlet portion 212O, and the boss protrudes from the end surface on the outlet side of the second liquid outlet portion 212O, for example. 2mm. Preferably, the distance between the end surface on the outlet side of the first liquid outlet portion 2110 and the end surface on the outlet side of the second liquid outlet portion 212O is 0.5 mm to 20 mm. In this embodiment, the cross-sectional shape of the first liquid outlet portion 2110 and the cross-sectional shape of the second liquid outlet portion 212O are both semicircular. In addition, the end surface on the outlet side of the first liquid outlet portion 2110 and the end surface on the outlet side of the first branch portion 223 described below jointly form a second groove 211C for mounting an annular seal ring.

Further, the outer peripheral surface of the connector outlet joint 22 is formed with an external thread part 221 as a double-threaded part, so that the connector outlet joint 22 constitutes a male luer joint structure inserted into the mounting cavity M of the short nozzle 1 and the male thread part 221 It is matched with the internal thread M2 in the installation cavity M of the short nozzle 1. The end surface of the external thread portion 221 is flush with the end surface on the outlet side of the second liquid outlet portion 212O. Preferably, the outer diameter of the external thread portion 221 is 7 mm to 8 mm.

Further, the outer peripheral surface of the connector outlet joint 22 is formed with a first groove 222 in which the first sealing ring 220 is installed, and the first groove 222 is located closer to the inlet side than the external thread portion 221. Through the first sealing ring 22O, the connector outlet joint 22 can be sealed with the inner side wall of the nozzle body 11 of the short spray head 1 for forming the installation cavity M, thereby preventing liquid leakage.

In the connector outlet joint 22, both the first liquid outlet portion 2110 and the second liquid outlet portion 212O share the first branching portion 223, so that the first liquid outlet portion 2110 and the second liquid outlet portion 212O are adjacent to each other and pass through the A shunt 223 is separated. With this structure, the first liquid outlet portion 2110 and the second liquid outlet portion 212O are independently parallel to each other, ensuring that the first liquid L1 and the second liquid L2 will not be mixed in the connector 2 before reaching the short nozzle 1. The mutual reaction blocks the flow path. Further, the first branch portion 223 extends to a position flush with the end surface on the outlet side of the first liquid outlet portion 2110.

On the other hand, the first liquid inlet portion 2111 and the second liquid inlet portion 212I protrude from the opening on the inlet side of the connector main body portion 21 toward the inlet side, and the first liquid inlet portion 2111 and the second liquid inlet portion 212I are in the lateral direction. Spaced a predetermined distance apart. In order to stabilize the positional relationship between the first liquid inlet portion 211I and the second liquid inlet portion 212I, in addition to fixing the first liquid inlet portion 211I and the second liquid inlet portion 212I through the connector inlet joint 23, the first liquid inlet A liquid conveying pipe connecting portion 213 is provided between the portion 211I and the second liquid inlet portion 212I. In this embodiment, the cross-sectional shape of the first liquid inlet portion 211I and the cross-sectional shape of the second liquid inlet portion 212I are both circular. Preferably, the inner diameter of the first liquid inlet portion 211I and the inner diameter of the second liquid inlet portion 212I The inner diameter is 4mm to 5mm.

In this embodiment, the connector inlet joint sleeve 231 is clamped to the connector main body 21 and covers the opening on the inlet side of the connector main body 21. Two connector inlet joint sleeves 231 spaced apart from each other in the lateral direction are provided. Two connector inlet joint sleeves 231 are respectively sleeved on the first liquid inlet portion 211I and the second liquid inlet portion 212I. In this way, through the first liquid inlet portion 211I and the corresponding connector inlet connector sleeve 231, a connector inlet connector 23 that cooperates with a single barrel syringe 3 is formed, and through the second liquid inlet portion 212I and the corresponding connector inlet connector sleeve 231 forms a connector inlet connector 23 that fits with another single-barrel syringe 3, and each connector inlet connector sleeve 231 and the first liquid inlet portion 211I and the second liquid inlet portion 212I respectively constitute a female connector that is matched with the single barrel syringe 3 Luer connector structure.

A connector inlet connector sleeve connecting portion 232 connected to both connector inlet connector sleeves 231 is provided between the two connector inlet connector sleeves 231. In addition to fixing the two connector inlet joint sleeves 231, the connector inlet joint sleeve connecting portion 232 is also used to be fixedly connected to the base of the buckle portion 24.

In this embodiment, the buckle portion 24 is fixed to the central position of the inlet joint sleeve connection portion 232 in the transverse direction, so that the buckle portion 24 is located between the two connector inlet joint sleeves 231. The buckle portion 24 includes two straightly extending buckle arm portions 241 (see FIG. 6a) and a buckle protrusion 242 disposed on the free end of the buckle arm portion 241 away from the connector inlet joint sleeve connection portion 232 .

The two snap arm portions 241 are spaced apart from each other at the base connected to the connector inlet joint sleeve connection portion 232 and extend from the base toward the free end gradually approaching each other and abut together at the free end.

Each buckle arm 241 is provided with a buckle protrusion 242. The buckle protrusion 242 protrudes from the free end of the buckle arm 241 toward both sides in a direction orthogonal to both the longitudinal and lateral directions, so that the two The buckle protrusions 242 form a buckle structure as a whole.

The specific structure of the connecting member 2 of the dual mixing syringe according to the first embodiment of the present invention has been described in detail above, and the structure of the single barrel syringe 3 of the dual mixing syringe will be described below.

(Structure of single barrel syringe 3)

In this embodiment, as shown in FIG. 8, the dual hybrid syringe includes two side-by-side single-cylinder syringes 3, and each single-cylinder syringe 3 includes a liquid storage portion 31 for storing liquid and can be used in the liquid storage portion 31. The piston moves the push-pull rod 32. The single-cylinder syringe 3 can be made of transparent or translucent materials such as plastic and glass. Therefore, the dual hybrid syringe of this embodiment can be applied to any liquid substance, such as liquid medicine, glue, and the like.

Specifically, in this embodiment, the liquid storage portion 31 includes a liquid storage portion main body 311, a liquid storage portion outlet portion 312 and a flange portion 313.

The liquid storage body 311 has a cylindrical shape and is used to store the liquid to be mixed.

The liquid storage portion outlet portion 312 extends from the end of the liquid storage portion main body 311 on the outlet side and constitutes the connector inlet joint sleeve 231 of the connector 2 and the first liquid inlet portion 211I and the second liquid inlet portion 212I, respectively The structure of the female Luer connector is formed to match the male Luer connector structure. In this way, each single barrel syringe 3 can be in liquid communication with the connecting member 2 in a sealed manner.

The flange portion 313 is provided at the end of the inlet side of the liquid storage portion main body 311 and protrudes toward the radially outer side of the liquid storage portion main body 311. The flange portion 313 has an oblong outer peripheral profile such that the The linear part of the outer contour can cooperate with the limiting portion 412 of the fixing frame 4 to limit the single-cylinder syringe 3.

In this embodiment, one end of the push-pull rod 32 is located outside the main body 311 of the liquid storage part as an operating part, and the other end of the push-pull rod 32 extends into the inside of the main body 311 of the liquid storage part. Pushing/pulling one end of the push-pull rod 32 can cause one end of the push-pull rod 32 to perform a piston movement inside the main body 311 of the liquid storage portion, so that the liquid inside the main body 311 of the liquid storage portion performs corresponding movement.

The specific structure of the single barrel syringe 3 of the dual hybrid syringe according to the first embodiment of the present invention has been described in detail above, and the structure of the fixing frame 4 of the dual hybrid syringe will be described below.

(Structure of fixed frame 4)

In this embodiment, as shown in FIG. 9, the fixing frame 4 has a substantially T-shaped structure as a whole. The fixing frame 4 includes a transverse portion 41 and a longitudinal portion 42 fixedly connected to the transverse portion 41.

Specifically, in this embodiment, the lateral portion 41 has a plate-like structure extending in the lateral direction.

Two mounting holes 411 penetrating through the lateral portion 41 are formed on both sides of the portion connected to the longitudinal portion 42 of the lateral portion 41. In this embodiment, one mounting hole 411 corresponds to one single-barrel syringe 3, and the liquid reservoir main body 311 of the single-barrel syringe 3 can pass through and be installed in the mounting hole 411. Further, the size of each mounting hole 411 is smaller than the size of the flange portion 313 of the single-tube syringe 3, so that after the single-tube syringe 3 is installed in the mounting hole 411, the flange portion 313 does not pass through the mounting hole 411 and can abut against The lateral portion 41, specifically, abuts against the surface of the lateral portion 41 opposite to the surface connected to the longitudinal portion 42.

The lateral portion 41 is provided with a positioning portion 412 on both sides of each mounting hole 411 in the lateral direction. In this embodiment, the two lateral sides of a mounting hole 411 are respectively provided with two limiting portions 412 opposite to each other. After the main body 311 of the liquid storage portion of the single-cylinder syringe 3 is installed in the mounting hole 411, the two mutually opposite limiting portions 412 can be clamped to the straight portion of the outer contour of the flange portion 313 to limit the single-cylinder syringe 3 In order to prevent the single-cylinder syringe 3 from loosening from the fixing frame 4.

In addition, as shown in FIG. 10a, in order to ensure that the limiting portion 412 can be clamped to the flange portion 313, the lateral distance W1 between the limiting portion 412 and the central axis of the corresponding mounting hole 411 is smaller than the flange portion The maximum distance W2 between the arc-shaped portion of the outer contour of the flange portion 313 and the central axis of the corresponding mounting hole 411 is preferably smaller than the horizontal distance between the straight portion of the outer contour of the flange portion 313 and the central axis of the corresponding mounting hole 411 the distance.

In this embodiment, the two longitudinal portions 42 extend from a substantially central portion in the lateral direction of the lateral portion 41 toward one side in the longitudinal direction, and the two longitudinal portions 42 are opposed to each other. The free ends of the two longitudinal portions 42 away from the lateral portion 41 are formed with longitudinal portion protrusions 421 protruding toward each other, and the two longitudinal portion protrusions 421 together constitute a buckle protrusion with the buckle portion 24 of the connector 2 From 242 matching structure. In this way, by matching the longitudinal protrusion 421 of the fixing frame 4 with the buckle protrusion 242 of the connecting member 2, the connecting member 2 and the fixing frame 4 can be fixed together in the longitudinal direction. In this way, the undesired rotation of the single-cylinder syringe 3 during use is prevented, and at the same time, the problem of complicated assembly and easy dispersal of the double hybrid syringe is solved. In addition, this structure replaces the prior art assembly method that uses threads or pull-rings, and the assembly is quick and easy, ensuring that the product is convenient and easy to use, and the snap assembly can also feedback the assembled sound to the operator, and the operator can accurately through the sound Determine whether the dual mixing syringe is assembled.

The specific structure of the fixing frame 4 of the dual mixing syringe according to the first embodiment of the present invention is described in detail above, and the structure of the push-pull rod connecting plate 5 of the dual mixing syringe will be described below.

(Structure of push-pull connecting plate 5)

As shown in Figures 1, 10b and 10c, the push-pull rod connecting plate 5 is used to connect the push-pull rods 32 of the two single-tube syringes 3 into one body, so that the push-pull rods 32 of the two single-tube syringes 3 can be linked. In this embodiment, the push-pull rod connecting plate 5 is connected to the push-pull rod 32 in such a way that the push-pull rod 32 is always aligned.

Specifically, the push-pull rod connecting plate 5 has a groove 51 for fixing the push-pull rod 32 of the single-cylinder syringe 3. When the push-pull rod connecting plate 5 is installed, the flange structure of the operating part of the push-pull rod 32 is installed in the groove 51. The push-pull rod connecting plate 5 makes the push-pull rods 32 of the two single-cylinder syringes 3 located at the same position (that is, on the same plane), so that the two single-cylinder syringes 3 can discharge liquid with equal volume, thereby achieving uniform liquid mixing. During the use of the dual hybrid syringe, the push-pull rod 32 of each single-cylinder syringe 3 can move the same distance by applying thrust and pulling force on the push-pull rod connecting plate 5, so that the same amount can be drawn or pushed out by pulling force. liquid.

In this embodiment, the push-pull rod connecting plate 5 has a concave portion 52 corresponding to the shape of a finger. The concave portion 52 may be an arc-shaped depression. The shape of the concave portion 52 can match the shape of the thumb of an adult and match the size, which is convenient for the operator to hold. Improve operating comfort. In addition, the recess 52 can also be designed as a frosted structure to enhance the anti-slip function.

The specific structure of each component (short nozzle 1, connector 2, single barrel syringe 3, fixing frame 4 and push-pull connecting plate 5) of the dual mixing syringe according to the first embodiment of the present invention has been described above. The drawings illustrate in detail the assembly process between the components.

As shown in Figures 10a to 10c, first, two single-tube syringes 3 are inserted into the mounting holes 411 of the fixing frame 4, respectively, and the flange portion 313 of the single-tube syringe 3 abuts against the lateral portion 41 of the fixing frame 4 and makes a convex The edge portion 313 and the limiting portion 412 realize a snap connection. In this way, the two single-cylinder syringes 3 and the fixing frame 4 realize a stable connection relationship. The push-pull rod connecting plate 5 can be installed on the push-pull rods 32 of the two single-tube syringes 3 after or before the single-tube syringe 3 is installed on the fixing frame 4.

As shown in Figs. 11a to 11c, the liquid storage outlet 312 of the two single-cylinder syringes 3 fixed to the holder 4 is inserted into the connector inlet connector 23 of the connector 2, so that the two can realize a sealed liquid communication; The buckle protrusion 242 of the buckle portion 24 of the connecting member 2 is engaged with the longitudinal protrusion 421 of the fixing frame 4, so that the connecting member 2 and the fixing frame 4 are fixed in the longitudinal direction. In the above process, the short spray head 1 can be connected to the connector 2 at any time during or after the assembly of the connector 2 with the single-cylinder syringe 3 and the fixing frame 4. In this way, the dual mixing syringe according to the first embodiment of the present invention can be obtained through the above-mentioned installation process.

The structure and assembly process of the dual mixing syringe according to the first embodiment of the present invention are described above, and the structure of the dual mixing syringe according to the second embodiment of the present invention will be described below with reference to the drawings.

(Structure of the dual mixing syringe according to the second embodiment of the present invention)

As shown in FIG. 12, the dual mixing syringe according to the second embodiment of the present invention includes a long spray head 6, a connecting piece 2, two single barrel syringes 3, a fixing frame 4 and a push-pull rod connecting plate 5. The structure of the connecting piece 2, the two single barrel syringes 3, the fixing frame 4, and the push-pull connecting plate 5 of the dual mixing syringe according to the second embodiment of the present invention is respectively the same as that of the dual mixing according to the first embodiment of the present invention The syringe connector 2, the two single-tube syringes 3, the fixing frame 4, and the push-pull rod connecting plate 5 have the same structure. The difference between the two is that the dual hybrid syringe according to the second embodiment of the present invention adopts a long The nozzle 6 replaces the short nozzle 1. In this way, the double mixing syringe according to the second embodiment of the present invention can be used as a lumen-type double mixing syringe.

In the following content, only the differences between the two embodiments will be described, that is, the specific structure of the long spray head 6 will be described below in conjunction with the drawings in the specification.

(Structure of long nozzle 6)

In this embodiment, the long nozzle inlet connector 63 on the inlet side of the long nozzle 6 is used to assemble with the connector outlet connector 22 of the connector 2, and the liquid L1, L2 from the connector 2 will pass through the connector outlet connector 22 It flows into the long nozzle 6 and is finally ejected from the nozzle 62 of the long nozzle 6.

As shown in FIGS. 13 to 15b, the long nozzle 6 includes a sheath 61, a nozzle 62, a long nozzle inlet connector 63, and a linear modeling body 64 assembled with each other.

Specifically, as shown in FIGS. 14a to 16b, in this embodiment, the sheath tube 61 has a linearly extending tube shape and is made of soft plastic or rubber. A first flow path 611, a second flow path 612 and a modeling cavity 613 extending along the axial direction of the sheath tube 61 and separated from each other are formed inside the sheath tube 61. The first flow path 611, the second flow path 612 and the modeling cavity 613 all penetrate the sheath tube 61 along the axial direction of the sheath tube 61.

In the cross section of the sheath tube 61 taken along the radial direction, the cross-sectional shape of the first flow path 611 and the cross-sectional shape of the second flow path 612 are both circular arc shapes and are center-symmetrical with respect to the geometric center of the cross-section, which can prevent During the bending process of the sheath tube 61, the cross-sectional area of each flow path 611, 612 is reduced due to the bending force, which is blocked. Specifically, since the arc-shaped cross-sectional shapes of the first flow path 611 and the second flow path 612 are center-symmetrical, two tubular parallel structures are formed in the inner structure of the sheath 61, which has double-layer bending ability; In the case of the same shape, compared with the conventional non-concentric circular cross-section of the sheath, the sheath 61 has a better ability to maintain the consistency of the cross section; moreover, due to the support of the modeling cavity 613, on the one hand During the bending process, the two layers of cavities formed by the first flow path 611 and the second flow path 612 can be superimposed into a solid structure to enhance the deformation resistance in the sheath 61. On the other hand, the cross section is arc-shaped. The flow passages 611 and 612 of each flow path can maintain the original cross-sectional area after bending, and ensure the effective liquid cross section of the entire sheath 61 in the first flow path 611 and the second flow path 612, thereby further ensuring The liquid throughput of each flow path 611, 612 prevents clogging. Through the above-mentioned connection structure, the first liquid L1 from the connecting piece 2 will flow through the long nozzle inlet joint 63 into the first flow path 611 and flow through the first flow path 611 to the nozzle 62, and the second liquid L2 from the connecting piece 2 will pass through the long nozzle The nozzle inlet connector 63 flows into the second flow path 612 and flows to the nozzle 62 via the second flow path 612.

In the cross section of the sheath tube 61 taken along the radial direction, the modeling cavity 613 is circular. The modeling cavity 613 is used to accommodate the linear modeling body 64 so that the sheath 61 can bend and maintain a predetermined shape. In this embodiment, the axial centerline of the modeling cavity 613 is consistent with the axial centerline of the sheath 61.

As shown in FIGS. 15a to 15b, in this embodiment, the nozzle 62 is installed at the end of the outlet side of the sheath tube 61 so that the liquids L1 and L2 flowing through the sheath tube 61 are mixed in the nozzle 62 and discharged from the nozzle 62 ejected. The nozzle 62 includes a nozzle main body 621 and a spiral speed increasing member 622 installed on the nozzle main body 621. The structure of the nozzle 62 is similar to the structure of the short nozzle head 1 described above. The only difference between the two is that in this embodiment, the nozzle body 621 does not have the internal thread M2 of the nozzle body 11 of the short nozzle head 1 and the nozzle body The radial dimensions (outer diameter and inner diameter) of the 621 are the same over the entire axial length. In this way, the nozzle 62 can also achieve exactly the same function as the short nozzle 1.

In this embodiment, the outer diameter of the outlet side end of the sheath tube 61 is smaller than the inner diameter of the nozzle body 621 of the nozzle 62, so that the sheath tube 61 and the nozzle body 621 are assembled together through an interference fit.

As shown in FIGS. 14a to 15b, in this embodiment, the long nozzle inlet joint 63 is attached to the end of the sheath tube 61 on the inlet side. The long nozzle inlet connector 63 is used to assemble correspondingly with the connector outlet connector 22 of the connector 2. The long nozzle inlet connector 63 includes a long nozzle inlet portion 631 fixed to the end of the inlet side of the sheath tube 61 and a long nozzle inlet portion mounted to the long nozzle inlet portion 631 so as to be rotatable relative to the long nozzle inlet portion 631 Socket 632.

Further, the long nozzle inlet portion 631 includes a first inlet portion 6311, a second inlet portion 6312, and a second branch portion 6313. When the long nozzle inlet 631 is fixed to the end of the inlet side of the sheath tube 61, the flow path of the first inlet part 6311 communicates with the first flow path 611 of the sheath tube 61, and the flow path of the second inlet part 6312 communicates with the sheath tube 61. The second flow path 612 of the tube 61 communicates.

Furthermore, the second inlet portion 6312 extends closer to the inlet side than the first inlet portion 6311, so that the end surface of the second inlet portion 6312 on the inlet side is located on the inlet side of the end surface of the first inlet portion 6311 on the inlet side, Therefore, the long nozzle inlet 631 forms an inlet step structure that matches the outlet step structure of the connector outlet joint 22. That is to say, at the inlet 631 of the long nozzle, the first inlet 6311 forms a concave portion that is recessed relative to the second inlet 6312. The two inlet portions 6311, 6312 of the long nozzle inlet 631 of the long nozzle 6 and the two liquid outlet portions 211O, 212O of the connector outlet joint 22 of the connector 2 are realized through the mutual cooperation of the inlet step structure and the outlet step structure. Accurate docking.

The second branch portion 6313 extends to a position that is flush with the end surface of the first inlet portion 6311 on the inlet side, and forms a storage second seal on the end surface of the first inlet portion 6311 on the inlet side and the end surface of the second branch portion 6313 on the inlet side. Ring 6311O groove. When the long nozzle inlet 631 and the connector outlet joint 22 are assembled together, the second sealing ring 63110 is also installed in the second groove 211C of the connector outlet joint 22. In this way, the area where the first inlet portion 6311 of the long nozzle inlet portion 631 and the first liquid outlet portion 2110 of the connector outlet joint 22 abut each other are sealed, so that the first liquid L1 and the second liquid L2 are separated from the connector outlet joint 22. When flowing into the inlet 631 of the long nozzle head, there is no mixing and reaction, which effectively prevents the liquids L1 and L2 from mixing and reacting in advance before reaching the nozzle 62 of the long nozzle head 6 and causing clogging. That is, the two inlet portions 6311, 6312 of the long nozzle inlet portion 631 of the long nozzle 6 and the two liquid outlet portions 211O, 212O of the connector outlet joint 22 of the connector 2 are butted in a state of being isolated from each other. .

In this embodiment, the cross-sectional shape of the first inlet portion 6311 and the cross-sectional shape of the second inlet portion 6312 are both semicircular.

In addition, the outer peripheral surface of the long nozzle inlet 631 is also formed with an annular sealing protrusion 6314 protruding radially toward the long nozzle inlet sleeve 632, and the sealing protrusion 6314 abuts against the long nozzle inlet sleeve 632. Further prevent liquid leakage. At the sealing protrusion 6314, the frictional force of the circumferential rotation is small, thereby ensuring that the long nozzle inlet 631 and the long nozzle inlet sleeve 632 remain smooth and labor-saving during the rotation, which facilitates the removal and removal of the long nozzle 6 at any time. Assembly. The end surface on the inlet side of the first inlet portion 6311 is formed with a second seal ring 6311O that protrudes toward the inlet side and extends over the entire circumference along the circumferential direction of the first inlet portion 6311. In this embodiment, the second sealing ring 6311O is formed integrally with the main body of the first inlet portion 6311 as a protrusion.

As shown in FIG. 14c, in this embodiment, the long nozzle inlet sleeve 632 has a substantially cylindrical shape and the long nozzle inlet sleeve 632 is sleeved at the long nozzle inlet in a manner capable of rotating relative to the long nozzle inlet 631部631.

The inner diameter of the long nozzle inlet sleeve 632 decreases from the inlet side toward the outlet side, and the long nozzle inlet sleeve 632 includes a sleeve main body 6321 and a connector outlet joint 22 provided on the inner peripheral wall of the cylindrical shape. The internal threaded portion 6322 fitted with the external threaded portion 221 of the sleeve and an exit flange 6323 protruding toward the inner side at the exit of the sleeve body 6321. The internal thread portion 6322 is disposed at the approximate center of the sleeve body 6321 in the axial direction, and the inner diameter of the sleeve body 6321 at the outlet flange 6323 is smaller than the outer diameter of the long nozzle inlet portion 631.

In this way, the long nozzle inlet joint 63 formed by the long nozzle inlet 631 and the long nozzle inlet sleeve 632 cooperates to form a female Luer joint structure that matches with the male Luer joint structure of the connector outlet joint 22. In the case where the long nozzle inlet connector 63 and the connector outlet connector 22 are assembled together, the first inlet portion 6311 of the long nozzle inlet connector 63 and the first liquid outlet portion 2110 of the connector outlet connector 22 are correspondingly communicated, and the long nozzle inlet connector The second inlet portion 6312 of the 63 is in correspondence with the second liquid outlet portion 212O of the connector outlet connector 22, and the second branch portion 6313 abuts the first branch portion 223, so that the long nozzle inlet connector 63 and the connector outlet In the process of assembling the joint 22 together, there will be no mis-assembly, and the first liquid L1 and the second liquid L2 will not mix at the assembled part and block the flow path. Even if the pressure of the liquid in the first flow path 611 and the second flow path 612 reaches 1 Mpa, the first liquid L1 and the second liquid L2 will not leak.

As shown in FIGS. 17a to 17d, in the present embodiment, the linear shaped body 64 extends in a linear shape, and the linear shaped body 64 includes a linear shaped body main body housed in the shaping cavity 613 of the sheath 61 641 and a flat positioning portion 642 provided at the end of the linear shaped body main body 641 on the inlet side and extending from the sheath 61.

In this embodiment, the linear shaped body 64 is a metal wire. In order to facilitate the installation of the metal wire, the metal wire is designed to have a circular cross-section.

In the process of bending a metal wire with a circular cross-section, it is possible that due to the difference in the hardness of the sheath 61 and the hardness of the metal wire, there is a difference in the amount of deformation, which causes the deformation of the metal wire to be inconsistent with that of the sheath 61, resulting in a shape The wire rotates. If the inner structure of the sheath 61 cannot prevent the rotation of the metal wire, the metal wire and the sheath 61 may be separated during the initial bending of the sheath 61, and the deformation cannot be synchronized, which means that the user cannot effectively control the sheath. The amount of bending deformation of 61. In addition, if you want to reshape the sheath 61 or straighten the bent sheath 61, it will be impossible to change the shape due to the separation of the modeling wire and the sheath 61 or the rotation of the modeling wire. Bent shape. Therefore, in this embodiment, the positioning portion 642 is embedded in the second branch portion 6313. By embedding the positioning part 642 in the second diverging part 6313, there is no need to reserve installation space for the positioning part 642, and the diameter of the long nozzle entrance 631 can be greatly reduced, making its volume smaller and more precise. During use, the long nozzle inlet 631 will not block the line of sight. On the other hand, when the sheath 61 is assembled with other parts, the volume of the whole product can be made smaller and it is more convenient to use. In addition, the positioning portion 642 can also prevent the linear modeling body 64 from rotating during the bending process, and at the same time limit the linear modeling body 64 to move in the axial direction, so that the linear modeling body 64 cannot move up and down. The sheath 61 can be bent freely under the drive of the linear modeling body 64 and restored into a straight line or reverse bending, for example, the sheath 61 can maintain the two shapes shown in FIGS. 18a and 18b.

In addition, as shown in FIG. 17b, the length W3 in the cross section of the linear shaped body main body 641 of the positioning part 642 is greater than the diameter of the linear shaped body main body 641, and the diameter of the linear shaped body main body 641 of the positioning part 642 The length W4 in the upward cross section is smaller than the diameter of the linear shaped body main body 641.

The specific technical solution of the present invention has been described in detail above, but it needs to be supplemented:

1. Although not described in the above specific embodiments, it can be understood that the two single-barrel syringes 3 are preferably syringes with pre-encapsulated liquid, and the two single-barrel syringes 3 preferably have identification information corresponding to the liquid they load. For example, in the case of pre-filling, the single-cylinder syringe 3 can be loaded with a specified type of liquid, and the liquid outlet of the liquid storage portion 31 of each single-cylinder syringe 3 can be sealed with a rubber cap to prevent Liquid flows out. Further, in order to facilitate the user to identify different liquids, identification information corresponding to the liquid can be set on each single-tube syringe 3, for example, the push-pull rods 32 of the two single-tube syringes 3 can use different colors.

2. Although not described in detail in the above specific embodiments, the technical solution of the present invention can achieve the following beneficial effects.

2.1 About short nozzle 1

The short nozzle 1 provided by the present invention can be well applied to the situation where the initial liquid pressure is less than 0.1Mpa and has a good atomization effect. By adding the spiral speed-increasing element 12 to the pressure chamber S1 in the short nozzle 1, the flow rate of the liquid in the flow channel S is increased. At the same time, the laminar flow channel S2 and the axial cavity S3 are added to increase the liquid pressure, and the fluid pressure in the spray chamber S4 It is already dozens of times the initial pressure, and the diameter of the injection cavity S4 can be adapted to increase, reducing the risk of clogging during use, and has a good atomization effect, while reducing the processing difficulty.

The short nozzle 1 uses the superposition principle of centrifugal atomization and axial atomization at the same time, and uses the swirling acceleration formed by the liquid flowing in the swirling acceleration channels S11 and S12 to accelerate the liquid to flow into the laminar flow channel S2, and penetrate the layer The arc-shaped branch channel S22 of the flow channel S2 further accelerates the liquid, and finally forms a venturi water film outside the nozzle. The water film tears in the air to form droplets. The droplets appear misty and regularly flow from the nozzle hole S5. It begins to form a conical distribution, which is suitable for ultra-low pressure ranges less than 0.1MPa, has a good atomization effect, and is simple to assemble.

Since the use of the spiral speed increasing element 12 makes the mixed liquid flow longer in the swirling acceleration channels S11 and S12, the mixing time and distance of the mixed liquid in this interval are increased, so that the two liquids have enough time and space. mixing. Because the swirling acceleration channels S11 and S12 increase the flow rate and pressure of the liquid, and the diameter of the ejection chamber S4 of the short nozzle 1 is relatively small, the diameter of the ejected droplets is smaller, the atomization effect is more obvious, and the liquid medicine coating layer The layer thickness is thinner. This effect allows users to better control the thickness of spraying and save more mixed liquid.

2.2 About connector 2

The connector 2 provided by the present invention is suitable for two use modes of spraying type and cavity mirror type at the same time, and the two use modes can be quickly switched by only changing different nozzles 1 and 6. The connector 2 provided by the present invention can be directly adapted to the short spray head 1 to form a spraying type double mixing syringe, or it can be adapted to the long spray head 6 to form a cavity mirror type double mixing syringe, so it can be used to fill the liquid at a time. Different usage patterns.

2.2.1 About the sealing structure between connecting piece 2 and short nozzle 1 or long nozzle 6

The connecting piece 2 and the short spray head 1 can realize a sealing structure between the connecting piece 2 and the short spray head 1 through the first sealing ring 22O, thereby forming a sealing effect to prevent liquid leakage.

A sealing structure is provided between the connecting piece 2 and the long nozzle 6 at two locations. First, the connecting member 2 and the long nozzle 6 can realize the sealing structure between the connecting member outlet joint 22 and the long nozzle inlet sleeve 632 through the first sealing ring 22O, thereby preventing the connection between the connecting member outlet joint 22 and the long nozzle inlet The liquid leaking at the docking position of the 631 leaks through the gap between the connector outlet joint 22 and the long nozzle inlet sleeve 632. Second, the second groove 211C provided on the outlet side end surface of the first liquid outlet portion 211O of the connector 2 and the second sealing ring 6311O provided on the inlet side end surface of the first inlet portion 6311 constitute a sealing structure, which can effectively hold The flow path formed by the first liquid outlet portion 2110 and the first inlet portion 6311 is separated from the flow path formed by the second liquid outlet portion 212O and the second inlet portion 6312 to ensure that the two flow paths will not communicate with each other and are independent and parallel. status. In addition, the outer peripheral surface of the long nozzle inlet 631 is also formed with an annular sealing protrusion 6314 protruding toward the long nozzle inlet sleeve 632, and the sealing protrusion 6314 abuts against the long nozzle inlet sleeve 632 to form a sealing structure It is used to further prevent the liquid leaking from the docking position of the connector outlet joint 22 and the long nozzle inlet 631 from leaking from the gap between the long nozzle inlet 631 and the long nozzle inlet sleeve 632.

Through the above sealing structure, an effective seal can be achieved between the connecting piece 2 and the long nozzle 6.

2.2.2 About the accurate docking of the flow path between the connecting piece 2 and the long nozzle 6

As shown in FIG. 19, the outlet step structure provided by the connector 2 is matched with the inlet step structure provided by the long spray head 6 to ensure that every time the thread is tightened, the accurate docking position of the connector 2 and the long spray head 6 will not be affected. During the tightening process, the connecting member 2 clamps the long nozzle inlet 631 of the long nozzle 6 and does not rotate, while the long nozzle inlet sleeve 632 is rotated and tightened.

In this way, it is ensured that in the process of connecting the long nozzle 6 and the connecting piece 2, there will be no deviation in the docking angle between the flow path in the connecting piece 2 and the flow path in the long nozzle 6 due to the action of tightening the threads, and no misalignment will occur. And cause the liquid medicine to be mixed here in advance.

3. About Long Nozzle 6

During use, two different types of liquids enter the long nozzle 6 smoothly, flow through the two flow paths 611 and 612 in the long nozzle 6 and then enter the nozzle 62 of the long nozzle 6. The nozzle 62 is located at the end of the outlet side of the long nozzle 6 and plays a role of mixing the two liquids and spraying. When the liquid flows smoothly to the nozzle 62, the two liquids are combined into one. The nozzle 62 accelerates through the same swirling flow as the short nozzle 1 and sprays atomized droplets from the nozzle 62 to achieve thin layer spraying. effect.

4. All the parts used in the dual hybrid syringe provided by the present invention can be made of plastic materials, and there are more choices in the sterilization method, which can be sterilized by EO or more efficient gamma ray sterilization.

5. Preferably, the long nozzle inlet portion 631 and the sheath tube 61 can be formed as an integral piece and integrally molded, and the sheath tube 61 and the long nozzle inlet portion 631 can be manufactured through an injection molding process.

The following provides a preparation method that can realize the integral molding of the long nozzle inlet 631 and the sheath 61, and the preparation method includes the following steps:

S1: Use an extrusion die to prepare a sheath 61 with flow paths 611, 612 and a modeling cavity 613;

S2: preinstall the linear modeling body 64 in the modeling cavity 613 of the sheath 61, and design the end of the linear modeling body 64 extending out of the sheath 61 into a flat shape to obtain the positioning portion 642; and

S3: Put the sheath tube 61 with the linear molding body 64 installed in the vertical injection mold to inject the long nozzle inlet 631 to obtain an integral piece of the long nozzle inlet 631 and the sheath 61.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

1: Short nozzle 11: Nozzle body 111: Large diameter part 112: Small diameter part 12: Spiral speed increasing parts 121: Spiral speed increasing part main body 122A: The first external thread 122B: The second external thread 2: connecting piece 21: The main body of the connector 211: The first liquid delivery pipeline 211C: second groove 211I: first liquid inlet 211O: The first liquid outlet 212: Second liquid delivery pipeline 212I: second liquid inlet 212O: second liquid outlet 213: Liquid delivery pipeline connection part 22: Connector outlet connector 221: External thread 222: first groove 223: The first branch 22O: first sealing ring 23: Connector inlet connector 231: connector inlet joint sleeve 232: connector inlet connector sleeve connector 24: buckle 241: Snap Arm 242: Buckle protrusion 3: Single barrel syringe 31: Reservoir 311: The main body of the reservoir 312: Outlet Department of Liquid Storage Department 313: Flange 32: push and pull rod 4: fixed frame 41: Transverse section 411: mounting hole 412: Limit 42: Longitudinal 421: Longitudinal bump 5: Push-pull rod connecting plate 51: Groove 52: recess 6: Long nozzle 61: Sheath 611: First Stream 612: Second Stream 613: modeling cavity 62: Nozzle 621: Nozzle body 622: Spiral Speed Increaser 63: Long nozzle inlet connector 631: Long nozzle entrance 6311: The first entrance 6311O: second sealing ring 6312: The second entrance 6313: The second branch 6314: Sealing protrusion 632: Long nozzle inlet casing 6321: casing body 6322: Internal thread 6323: Outlet flange 64: Linear modeling body 641: Linear modeling body 642: Positioning Department A: Axial L1: first liquid L2: second liquid M: mounting cavity M1: ring groove M2: Internal thread R·: Radial S: runner S1: Pressure chamber S11: The first swirling acceleration channel S12: Second Swirl Acceleration Channel S2: Laminar flow channel S21: Convergence Department S22: Curved branch channel S3: Axial cavity S4: Jet cavity S5: Orifice

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Fig. 1a is a schematic structural diagram of a dual mixing syringe according to a first embodiment of the present invention; Fig. 1b is an exploded schematic diagram of the dual mixing syringe in Fig. 1a. Fig. 2a is a schematic cross-sectional view of the short spray head of the dual mixing syringe in Fig. 1a; Fig. 2b is a partial perspective perspective view of the short spray head in Fig. 2a. Fig. 3a is a perspective view of the spiral speed increasing member of the short nozzle in Fig. 2a; Fig. 3b is a front view of the spiral speed increasing member of the short nozzle in Fig. 2a. 4a, 4b, and 4c are explanatory diagrams for explaining the pressure chamber and the swirling acceleration channel of the short nozzle in FIG. 2a. 5a, 5b, 5c, and 5d are explanatory diagrams for explaining the ejection cavity, axial cavity, and laminar flow channel of the short nozzle in Fig. 2a. Fig. 6a is a perspective schematic view of the connecting piece of the dual mixing syringe in Fig. 1a; Fig. 6b is another perspective schematic view of the connecting piece in Fig. 6a. Fig. 7a is a schematic cross-sectional view of the connecting member in Fig. 6a; Fig. 7b is an explanatory diagram for explaining the flow state of two liquids in the connecting member in Fig. 6a. Fig. 8 is a schematic diagram of the structure of the single-cylinder syringe of the double mixing syringe in Fig. 1a. Fig. 9 is a schematic structural diagram of the fixing frame of the dual mixing syringe in Fig. 1a. 10a to 10c are explanatory diagrams for explaining that the single-cylinder syringe in FIG. 8 is assembled to the fixing frame in FIG. 9. 11a to 11c are explanatory diagrams for explaining the assembly process of the dual mixing syringe in FIG. 1a. Fig. 12 is an exploded schematic view of the dual mixing syringe according to the second embodiment of the present invention. FIG. 13 is a schematic diagram of the structure of the long nozzle of the dual mixing syringe in FIG. 12. Figure 14a is a partial structural cross-sectional view of the long nozzle in Figure 13; Figure 14b is a schematic structural diagram of the structure in Figure 14a after the long nozzle inlet casing is removed; Figure 14c is the long nozzle inlet casing in Figure 14a Schematic cross-sectional view. 15a is another partial structural cross-sectional view of the long nozzle in FIG. 13; FIG. 15b is a schematic cross-sectional view of the nozzle of the long nozzle in FIG. Fig. 16a is a partial structural schematic diagram of the sheath of the long nozzle in Fig. 13; Fig. 16b is a schematic top view of the sheath in Fig. 16a. Figure 17a is a schematic structural view of the linear modeling body in Figure 13; Figure 17b is a partial structural schematic view of the linear modeling body in Figure 17a; Figure 17c is the linear modeling body in Figure 17b assembled into the sheath in Figure 16a Figure 17d is an explanatory diagram for explaining the fixing of the positioning portion of the linear modeling body and the second branching portion in Figure 17a. Fig. 18a is a schematic diagram showing the state before the sheath of the long nozzle in Fig. 16a is bent; Fig. 18b is a schematic diagram showing the state after the sheath of the long nozzle in Fig. 16a is bent. FIG. 19 is an explanatory diagram for explaining the assembly process of the connector of the double mixing syringe and the long spray head in FIG. 12.

2: connecting piece

22: Connector outlet connector

3: Single barrel syringe

4: fixed frame

5: Push-pull rod connecting plate

6: Long nozzle

62: Nozzle

63: Long nozzle inlet connector

Claims (10)

A long nozzle for a dual mixing syringe, the long nozzle includes a long nozzle inlet connector, a sheath tube and a nozzle, the long nozzle inlet connector includes a long nozzle inlet and a sleeve capable of rotating relative to the long nozzle inlet A sleeve at the inlet of the long nozzle at the inlet of the long nozzle, the inlet of the long nozzle includes a first inlet and a second inlet, so that the inlet of the long nozzle is formed to match the outlet step structure of the outlet joint of the connector The inlet of the long nozzle has a stepped structure, and the long nozzle inlet sleeve has a cylindrical shape and is formed with an internal threaded portion that matches with the external threaded portion of the connector outlet joint, so that the long nozzle inlet joint constitutes and the connector outlet Thread structure for fittings. The long spray head for a dual mixing syringe according to claim 1, wherein the outer peripheral surface of the outlet joint of the connector is formed with a first groove for installing a ring-shaped first seal ring, and the first inlet portion The end surface of the inlet side is provided with a second sealing ring, and when the inlet of the long nozzle and the outlet joint of the connector are assembled together, the outlet joint of the connector and the sleeve of the inlet of the long nozzle pass through The first sealing ring forms a first sealing structure, the second sealing ring abuts against the end surface of the outlet side of the first liquid outlet portion of the connector outlet joint to form a second sealing structure, and the long nozzle inlet portion An annular sealing protrusion facing the sleeve at the inlet of the long nozzle is also formed on the outer peripheral surface, and the sealing protrusion abuts against the sleeve at the inlet of the long nozzle to form a sealing structure. The long nozzle for a dual hybrid syringe according to claim 1, wherein the sheath tube is formed with a first flow path and a first flow path that are separated from each other. Two flow paths and the end of the inlet side of the sheath tube and the long nozzle inlet are fixed together so that the first flow path communicates with the flow path of the first inlet part and the second flow path is connected to the The flow path of the second inlet part communicates; and the nozzle is installed at the end of the outlet side of the sheath tube so that the liquid flowing through the sheath tube is mixed at the nozzle and ejected from the nozzle. The long spray head for a dual mixing syringe according to claim 3, wherein a modeling cavity separated from both the first flow path and the second flow path is formed inside the sheath, and A linear modeling body for modeling the sheath tube is housed in the modeling cavity, and the linear modeling body includes a linear modeling body main body and one end of the linear modeling body main body disposed on the inlet side of the sheath tube. A flat positioning portion extending from the end surface of the, the positioning portion is fixed to the inlet of the long nozzle. The long spray head for a dual hybrid syringe according to any one of claims 1 to 4, wherein the nozzle includes a nozzle body and a spiral speed increasing member, the spiral speed increasing member is housed in the nozzle body, and The nozzle main body and the spiral speed increasing member jointly form a flow channel penetrating in the axial direction. The flow channel includes a pressure chamber, and at least two swirling acceleration channels extending spirally are formed in the pressure chamber to allow the inflow The liquid in the at least two swirling acceleration channels can form a swirl and accelerate; a laminar flow channel, the laminar flow channel includes a converging portion and at least three arcs extending from the converging portion toward the radially outer side in a scattering shape The diameter of the convergent part is smaller than the diameter of the pressure chamber, and the convergent part communicates with the pressure chamber through the at least three arc-shaped branch passages. The liquid in the force chamber can be further accelerated to flow into the converging part through the at least three arc-shaped branch channels to form a vortex; an axial cavity, the diameter of the axial cavity is smaller than the diameter of the pressure cavity, The axial cavity is directly connected with the converging part; and an injection cavity, the diameter of the injection cavity is smaller than the diameter of the axial cavity, the injection cavity is directly connected with the axial cavity, and the The liquid can flow into and be ejected from the ejection chamber. A duplex mixing syringe comprising: a connecting piece, the connecting piece including a connecting piece main body, a connecting piece outlet joint protruding from the connecting piece main body portion toward the outlet side, and a connecting piece The main body part protrudes toward the inlet side of the connector inlet joint, wherein the connector outlet joint has an outlet step structure, and the outer peripheral surface of the connector outlet joint has an external thread part; and the outlet joint part of the connector The long spray head for a dual mixed syringe according to any one of claims 1 to 5; two single-barrel syringes, the two single-barrel syringes are connected to the connector inlet joint of the connector; and a fixing frame The fixing frame is used to fix the two single-cylinder syringes and is fixed together with the connecting piece. The dual mixing syringe according to claim 6, wherein the fixing frame has a T-shaped structure, and the fixing frame includes a lateral portion extending along the lateral direction and a substantially central portion along the lateral direction of the lateral portion. A longitudinal portion extending longitudinally, the transverse portion is formed with two mounting holes arranged in a transverse direction, and the two single-tube syringes are respectively inserted into the two mounting holes and installed in the The two mounting holes, and the lateral portion further includes at least two limiting portions provided on both lateral sides of each of the mounting holes, and the limiting portion is clamped to the flange portion of the single-tube syringe, The distance between the limiting portion and the central axis of the corresponding mounting hole is smaller than the maximum distance between the outer contour of the flange portion and the central axis, so that the single-cylinder syringe is fixed to the fixing frame. The dual mixing syringe according to claim 7, wherein the connector includes a snap portion extending from the main body of the connector toward the outlet side, and the snap portion includes a snap arm portion extending linearly And a buckle protrusion disposed on the free end of the buckle arm away from the main body of the connector; the two longitudinal portions on the fixing frame extend opposite to each other and the two longitudinal portions The free ends far away from the transverse portion form longitudinal protrusions protruding toward each other, so that the longitudinal protrusions and the buckle portion of the connecting piece are engaged and engaged, so that the fixing frame and the The relative positions of the connecting members at least in the longitudinal direction are fixed. The dual mixing syringe according to claim 6, wherein the step structure of the inlet of the long nozzle inlet of the long nozzle is matched with the step structure of the outlet of the connector outlet joint of the connector, so that the inlet of the long nozzle The first inlet of the long nozzle is accurately butted with the first liquid outlet of the outlet joint of the connector and is abutted by end faces. The second inlet of the inlet of the long nozzle is connected to the outlet joint of the connector. The second liquid outlet portion is accurately butted and is butted in a manner of abutting end faces. According to the dual mixing syringe according to any one of claims 6 to 9, the outlet joint of the connector and the inlet sleeve of the long nozzle pass through a first sealing ring shape A first sealing structure is formed. The first liquid outlet portion of the connector outlet joint and the first inlet portion of the long nozzle form a second sealing structure through a second sealing ring, and the outer peripheral surface of the inlet portion of the long nozzle is also An annular sealing protrusion facing the sleeve at the inlet of the long nozzle is formed, and the sealing protrusion abuts against the sleeve at the inlet of the long nozzle to form a sealing structure.

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