Flow detection device and syringe

Abstract

The present invention discloses a flow detection device and a syringe. The flow detection device of the present invention is provided with a detection member in a catheter, and the detection member moves within a predetermined section of the catheter. The flow is detected by whether the catheter moves to a preset position, and relying on the different densities of the detection member and the fluid in the catheter, the detection member can be reset by gravity or buoyancy. Through the above setting method, it is possible to detect whether the fluid meets the minimum amount required for injection, and the syringe with the flow detection device can remind the operator whether a single injection during vaccination meets the injection requirement, thereby improving the vaccination quality.

Description

Technical Field

[0001] The present invention relates to the field of flow detection, and particularly to a flow detection device and a syringe. Background Art

[0002] In the breeding industry (such as poultry, livestock, etc.), it is necessary to inoculate vaccines to improve the survival rate of poultry or livestock. In the related art, vaccine inoculation still relies on manual operation, and the operator needs to continuously inoculate a large number of poultry or livestock. In this working mode, the operator is easily fatigued and the operation is not in place, resulting in insufficient single injection volume and affecting the quality of vaccine inoculation. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a flow detection device capable of detecting whether the flow rate through the catheter reaches the minimum amount.

[0004] The present invention also provides a syringe having the above flow detection device.

[0005] The flow detection device according to the first aspect embodiment of the present invention is used for detecting the fluid flow rate, and includes:

[0006] A catheter, the catheter includes a first position and a second position, and the first position is higher than the second position;

[0007] A detection member placed in the lumen of the catheter;

[0008] The density of the detection member is greater than or less than the density of the fluid. When the density of the detection member is greater than the density of the fluid, the detection member can be driven by the fluid flowing through the catheter to flow from the second position to the first position. When the density of the detection member is less than the density of the fluid, the detection member can be driven by the fluid to flow from the first position to the second position.

[0009] The flow detection device according to the embodiment of the present invention has at least the following beneficial effects: it can detect whether the flow rate through the catheter reaches the minimum amount.

[0010] According to some embodiments of the present invention, the diameters of the first position and the second position of the catheter are smaller than the outer diameter of the detection member to limit the detection member in the lumen between the first position and the second position.

[0011] According to some embodiments of the present invention, it further includes a hose clamp. The catheter is a flexible hose, and the hose clamp is clamped at the first position and the second position to limit the detection member in the lumen between the first position and the second position.

[0012] According to some embodiments of the present invention, it further includes

[0013] a sensor, which is arranged outside the catheter and is used to sense the detection piece driven by the fluid to a set position;

[0014] an alarm, which is used to send an alarm signal according to the sensing result of the sensor.

[0015] According to some embodiments of the present invention, the alarm signal is at least one of sound and light.

[0016] According to some embodiments of the present invention, the pipe diameters at the first position and the second position are smaller than the outer diameter of the detection piece, so that the detection piece is restricted in the lumen between the first position and the second position. The flow detection device further includes a pipe clamp, and the sensor is fixed to the pipe clamp, and the pipe clamp is clamped on the catheter so that the sensor can sense the detection piece driven by the fluid to a set position.

[0017] According to some embodiments of the present invention, it further includes a mounting bracket, which includes a first mounting plate, a second mounting plate and a third mounting plate. One end of the second mounting plate is fixedly connected to the first mounting plate, and the other end of the second mounting plate is connected to the third mounting plate. The first mounting plate is provided with a first through hole, and the third mounting plate is provided with a second through hole. The catheter passes through the first through hole and the second through hole, and the sensor is fixed on the second mounting plate.

[0018] According to some embodiments of the present invention, the catheter is a flexible pipe, and the diameters of the first through hole and the second through hole are both smaller than the outer diameter of the catheter.

[0019] According to some embodiments of the present invention, at least one of the first mounting plate and the third mounting plate can move along the second mounting plate.

[0020] According to some embodiments of the present invention, the mounting bracket further includes a fourth mounting plate, which is provided with a third through hole. The catheter passes through the third through hole, and the diameter of the third through hole is smaller than the outer diameter of the catheter. The fourth mounting plate is arranged between the first mounting plate and the third mounting plate and can move along the second mounting plate.

[0021] According to some embodiments of the present invention, scale lines are arranged on the second mounting plate.

[0022] The syringe according to the second aspect embodiment of the present invention includes the flow detection device of the first aspect embodiment described above.

[0023] The syringe according to the embodiment of the present invention has at least the following beneficial effects: it can remind the operator whether the single injection volume meets the injection requirements and can timely remind the operator that the vaccine has been used up.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the drawings and embodiments, where:

[0026] Figure 1 is a schematic structural diagram of a flow detection device according to an embodiment of the present invention;

[0027] Figure 2 is Figure 1 the front view of

[0028] Figure 3 is Figure 1 the side view of

[0029] Figure 4 is Figure 1 the schematic structural diagram of the mounting bracket in

[0030] Figure 5 is a schematic structural diagram of a flow detection device according to another embodiment of the present invention;

[0031] Figure 6 is a syringe according to the second aspect embodiment of the present invention.

[0032] Reference numerals:

[0033] catheter 100, first position 110, second position 120;

[0034] inductor 200;

[0035] mounting frame 300, first mounting plate 310, first through hole 311, second mounting plate 320, opening 321, third mounting plate 330, second through hole 331, fourth mounting plate 340, third through hole 341;

[0036] pump body 400;

[0037] vaccine bottle 500;

[0038] pipe clamp 600. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0040] In the description of the present invention, it should be understood that with regard to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0041] In the description of the present invention, the meaning of several is more than one, the meaning of a plurality is more than two, greater than, less than, exceeding, etc. are understood as not including the recited number, and above, below, within, etc. are understood as including the recited number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0042] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above terms in the present invention in combination with the specific content of the technical solution.

[0043] In the description of the present invention, the description referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0044] The following will be combined with Figures 1 to 5 to describe the flow detection device of the present invention.

[0045] The flow detection device is used for detecting the fluid flow rate and includes a conduit 100 and a detection member (not shown in the figure). The conduit 100 includes a first position 110 and a second position 120, where the first position 110 is higher than the second position 120. The detection member is placed in the lumen of the conduit 100, and the density of the detection member is greater than or less than the density of the fluid. When the density of the detection member is greater than the density of the fluid, the detection member can be driven by the fluid flowing through the conduit and flow from the second position 120 to the first position 110. When the density of the detection member is less than the density of the fluid, the detection member can be driven by the fluid and flow from the first position 110 to the second position 120.

[0046] Specifically, as Figures 1 to 3 shown, during the use of the flow detection device, in order to move the detection member between the first position 110 and the second position 120 of the conduit 100, the conduit 100 can be arranged in a vertical direction or at a certain inclination angle, but the conduit 100 cannot be placed horizontally. Therefore, there is a height difference between the first position 110 and the second position 120 of the conduit 100. For the convenience of description, the position above is called the first position 110, and the position below is called the second position 120. The detection member (not shown in the figure) is placed in the lumen of the conduit 100, and the density of the detection member is not equal to the density of the fluid flowing through the conduit. When the density of the detection member is greater than the density of the fluid, when the fluid in the conduit 100 does not flow, the gravity of the detection member is greater than the buoyancy force, and the detection member is located at the lower position of the conduit 100, that is, the second position 120. The flow direction of the fluid is from the second position 120 to the first position 110. Affected by the flow force of the fluid, the detection member moves along the direction of fluid flow, that is, the detection member moves from the second position 120 to the first position 110 under the action of the fluid flowing through the conduit. When the fluid stops flowing, due to the density of the detection member being greater than the density of the fluid, the detection member falls back to the second position 120 for reset. When the density of the detection member is less than the density of the fluid, when the fluid in the conduit 100 does not flow, the buoyancy force of the detection member is greater than the gravity, and the detection member is located at the upper position of the conduit 100, that is, the first position 110. During the process of the fluid flowing from the first position 110 to the second position 120, affected by the flow force of the fluid, the detection member moves from the first position 110 to the second position 120. When the fluid stops flowing, due to the gravity of the detection member being less than the buoyancy force, the detection member floats up from the second position 120 to the first position 110 for return.

[0047] The fluid flowing through the conduit 100 in the flow detection device can be a liquid, such as an injection solution. The flow detection device is used to detect whether the single injection volume during the injection process of poultry or livestock reaches the minimum value. During the injection process of poultry or livestock, it is usually manually operated. The operator needs to perform a large number of repetitive operations every day. During the operation of the syringe, it is easy to have an improper operation, which may lead to the single injection volume not meeting the minimum value requirement. If the single injection volume does not reach the minimum injection volume requirement, it cannot play an epidemic prevention role for poultry or livestock, and ultimately may cause huge economic losses. The flow detection device of the present invention is to detect whether the single injection volume meets the minimum flow requirement. The volume between the first position 110 and the second position 120 of the conduit 100 is equal to the minimum amount of a single injection. When the density of the detection piece is greater than the density of the injection solution, the injection solution flows from the second position 120 to the first position 110. If the detection piece moves to the first position 110, the minimum amount of a single injection meets the requirement. If the detection piece does not move to the first position 110, it means that the minimum amount of a single injection does not meet the injection requirement. When the density of the detection piece is less than the density of the injection solution, the injection solution flows from the first position 110 to the second position 120. If the detection piece moves to the second position 120, the minimum amount of a single injection meets the requirement. If the detection piece does not move to the second position 120, it means that the minimum amount of a single injection does not meet the injection requirement. Whether the detection piece moves to the first position 110 or the second position 120 can be detected by manual observation or induction. The shape of the detection piece can be a cylinder, a sphere, a cuboid, etc. Through the above setting method, it is possible to detect whether the single injection during the injection process meets the minimum injection volume requirement, so as to improve the reliability of vaccination.

[0048] In some specific embodiments of the present invention, the pipe diameters of the first position 110 and the second position 120 are both smaller than the outer diameter of the detection piece, so as to limit the detection piece in the lumen between the first position 110 and the second position 120.

[0049] In order to limit the movement of the detection member within the interval where the first position 110 and the second position 120 of the conduit 100 are located, and prevent it from moving outside this interval, the conduit 100 can be set as a variable-diameter pipe. According to the actual requirements of detecting the flow rate, two variable-diameter sections are provided on the conduit 100, and the diameters of these two variable-diameter sections are smaller than the outer diameter of the detection member, so that the detection member cannot pass through these two variable-diameter sections. The upper variable-diameter section is the first position 110, and the lower variable-diameter section is the second position 120. The conduit 100 can be either a rigid pipe or a flexible pipe. If the above setting method is not adopted for the conduit 100, during the injection interval (i.e., between the completion of one injection and the start of the next injection), under the action of gravity (the density of the detection member is greater than the density of the fluid) or buoyancy (the density of the detection member is less than the density of the fluid), the detection member will move downward or upward continuously, thus leaving the interval where the first position 110 and the second position 120 are located. However, by adopting the above method, the detection member can always be kept working within the interval where the first position 110 and the second position 120 are located, improving the reliability of the flow rate detection device.

[0050] In some specific embodiments of the present invention, it further includes a pipe clamp 600. The conduit 100 is a flexible pipe, and the pipe clamp 600 clamps the first position 110 and the second position 120 of the conduit 100, so as to limit the detection member within the lumen between the first position 110 and the second position 120.

[0051] Specifically, the minimum amount required for a single injection plus the volume of the detection member is equal to the diameter of the flexible pipe multiplied by the length between the first position 110 and the second position 120. According to the above formula, the length between the first position 110 and the second position 120 is calculated. The pipe clamp clamps the flexible pipe at two positions. The upper pipe clamp position is the first position 110 of the conduit 100, and the lower pipe clamp position is the second position 120 of the conduit 100. The pipe clamp 600 clamps the conduit 100, deforming the first position 110 and the second position 120 of the conduit 100 to limit the detection member within the lumen between the first position 110 and the second position 120. The pipe clamp 600 can be such as Figure 5The pipe clamp shown in the figure has two clamping points. One clamping point clamps at the first position 110 of the conduit 100, and the other clamping point clamps at the second position 120 of the conduit 100. The distance between the two clamping points of the pipe clamp is equal to the length required for the first position 110 and the second position 120. It can be understood that a pipe clamp with only one clamping point can also be used to clamp the conduit 100, and the two pipe clamps are respectively clamped at the first position 110 and the second position 120 of the conduit 100. For this clamping structure of the two pipe clamps, the position between the two pipe clamps can also be adjusted according to different vaccines and the requirements of different vaccination objects for the minimum injection volume of the vaccine, so that the flow detection device can be used in scenarios with different injection requirements. By means of the pipe clamp and the hose, the device can be made low-cost and easy to implement, and the clamping position of the pipe clamp can be adjusted according to different minimum injection volume requirements, thereby improving the universality of the application of the flow detection device.

[0052] In some specific embodiments of the present invention, it further includes a sensor 200 and an alarm. The sensor 200 is arranged outside the conduit 100 and is used to sense the detection piece driven to the set position by the fluid. The alarm is used to send an alarm signal according to the sensing result of the sensor.

[0053] Specifically, the type of the sensor 200 matches the material of the detection piece. When the material of the detection piece is a metal material, the sensor 200 is a sensor capable of sensing the metal material. When the material of the detection piece is a non-metal material, the sensor 200 is a sensor capable of sensing the non-metal material. When the material of the detection piece is a magnetic material, the sensor 200 is a sensor capable of sensing the magnetic material. The sensor 200 can be adhered to the outer side of the catheter 100 by gluing. For example, the sensor 200 can be attached to the outer side of the catheter 100 using double-sided tape, or the sensor 200 can be attached to the outer side of the catheter 100 using tape. It can be understood that the sensor 200 can also be strapped to the outer side of the catheter 100. When the density of the detection piece is greater than the density of the fluid, the sensor is arranged at the first position 110 of the catheter. When the density of the detection piece is less than the density of the fluid, the sensor is arranged at the second position 120. The sensor 200 sends the result of whether it senses the detection piece within a predetermined time to the alarm, and the alarm emits an alarm signal according to the sensing result. Specifically, when the single injection volume does not meet the requirement of the minimum injection volume, the detection piece will not move to the first position 110 or the second position 120, so the sensor arranged at the first position 110 or the second position 120 cannot detect the detection piece; when the single injection volume meets the requirement of the minimum injection volume, the detection piece can move to the first position 110 or the second position 120, and the sensor can sense the detection piece. The alarm can alarm when the single injection volume does not meet the minimum injection volume, that is, when the sensing result is that the detection piece is not detected, the alarm emits a prompt message to remind the operator that the injection volume is insufficient; the alarm can also give a prompt when the single injection volume meets the minimum injection volume, that is, when the sensing structure is that the detection piece is detected, the alarm emits a prompt message to inform the operator that the injection operation meets the specification this time. Through the above setting method, the operator can be reminded by the alarm without the operator always observing the movement of the detection piece, which can reduce the working intensity of the operator and reduce the error of human judgment, thereby improving the injection quality.

[0054] In some specific embodiments of the present invention, the alarm signal is at least one of sound and light.

[0055] Specifically, the alarm can be a buzzer. When the sensor 200 does not sense the detection piece within a predetermined time, the buzzer emits a sound to remind the operator. The alarm can also be an alarm lamp, and the alarm lamp emits a flashing light to remind the operator; after the operator gets the reminder, the injection operation is in place, so that the single injection meets the requirement of the minimum injection volume. According to actual needs, a single sound alarm or light alarm can be selected, or an alarm can be given by sound and light at the same time. In addition, for the convenience of subsequent data analysis work, the alarm signal can also include an electrical signal, and the alarm sends the alarm signal to the cloud for storage through the network for subsequent analysis and use.

[0056] In some specific embodiments of the present invention, the diameters of the first position 110 and the second position 120 of the conduit 100 are smaller than the outer diameter of the detection member, so that the detection member is restricted in the lumen between the first position 110 and the second position 120. The flow detection device further includes a pipe clamp 600, and the inductor 200 is fixed on the pipe clamp 600. The pipe clamp 600 is clamped on the conduit 100 so that the inductor 200 can sense the detection member driven by the fluid to a set position.

[0057] Specifically, the conduit 100 can be a rigid pipe or a flexible pipe. The diameters of the first position 110 and the second position 120 of the conduit 100 are both smaller than the outer diameter of the detection member. In this way, when the fluid flows in the conduit 100, the detection member is restricted between the first position 110 and the second position 120. The inductor 200 is fixed on the pipe clamp 600. When the first position 110 is higher than the second position 120 and the density of the detection member is greater than the density of the fluid, the fluid flows from the second position 120 to the first position 110. In this case, the pipe clamp 600 is clamped on the conduit 100 and the inductor 200 on the pipe clamp 600 corresponds to the first position 110. At this time, the inductor 200 can sense whether the detection member moves to the first position 110; when the first position 110 is higher than the second position 120 and the density of the detection member is less than the density of the fluid, the fluid flows from the first position 110 to the second position 120. In this case, the pipe clamp 600 is clamped on the conduit 100 and the inductor 200 on the pipe clamp 600 corresponds to the second position 120. At this time, the inductor 200 can sense whether the detection member moves to the second position 120. By using the pipe clamp 600 to fix the inductor 200, the structure is simple and the cost is low.

[0058] In some specific embodiments of the present invention, it further includes a mounting bracket 300. The mounting bracket 300 includes a first mounting plate 310, a second mounting plate 320 and a third mounting plate 330. One end of the second mounting plate 320 is fixedly connected to the first mounting plate 310, and the other end of the second mounting plate 320 is fixedly connected to the third mounting plate 330. A first through hole 311 is provided on the first mounting plate 310, and a second through hole 331 is provided on the third mounting plate 330. The conduit 100 passes through the first through hole 311 and the second through hole 331, and the inductor 200 is fixed on the second mounting plate 320.

[0059] Specifically, as Figure 4As shown, the mounting bracket 300 is in a "C" shape, where the first mounting plate 310 and the third mounting plate 330 are spaced apart and connected by the second mounting plate 320. One end of the second mounting plate 320 is fixedly connected to the first mounting plate 310, and the other end of the second mounting plate 320 is fixedly connected to the third mounting plate 330. The first mounting plate 310 is provided with a first through hole 311, and the third mounting plate 330 is provided with a second through hole 331. The first through hole 311 and the second through hole 331 are coaxially arranged. The sensor 200 is fixed on the second mounting plate 320. The sensor 200 can be fixed on the side of the second mounting plate 320 facing the conduit 100 so that the sensor 200 can sense the test piece in the conduit 100. The sensor 200 can also be fixed on the side of the second mounting plate 320 facing away from the conduit 100. In order to reduce interference with the sensor 200, an opening 321 is provided on the second mounting plate 320, and the opening part 321 is opened at a position corresponding to the sensing part of the sensor 200 so that the sensing part of the sensor 200 can directly sense the test piece in the conduit 100. The mounting bracket 300 can be a sheet metal structure, and the first mounting plate 310 and the second mounting plate 320, as well as the second mounting plate 320 and the third mounting plate 330, are fixedly connected by welding. In addition, the mounting bracket 300 can also be a plastic part and is formed by an integral molding method.

[0060] In some specific embodiments of the present invention, the conduit 100 is a flexible hose, and the diameters of both the first through hole 311 and the second through hole 331 are smaller than the outer diameter of the conduit 100.

[0061] Specifically, the diameters of the first through hole 311 and the second through hole 331 are smaller than the outer diameter of the conduit 100. When the conduit 100 passes through the first through hole 311 and the second through hole 331, the conduit 100 is squeezed by the first mounting plate 310 and the third mounting plate 330, and the test piece is restricted to the lumen only between the first mounting plate 310 and the third mounting plate 330, thereby improving the reliability of the flow detection device.

[0062] In some specific embodiments of the present invention, at least one of the first mounting plate 310 and the third mounting plate 330 can move along the second mounting plate 320.

[0063] Specifically, at least one of the first mounting plate 310 and the third mounting plate 330 can move relative to the second mounting plate 320, so as to be able to adjust the distance between the first mounting plate 310 and the third mounting plate 330, so that the distance between the first position 110 and the second position 120 of the flexible hose changes to meet the requirements of different vaccination objects for the minimum injection amounts of different vaccines.

[0064] In some specific embodiments of the present invention, the mounting bracket 300 further includes a fourth mounting plate 340. A third through hole 341 is provided on the fourth mounting plate 340. The conduit 100 passes through the third through hole 341. The aperture of the third through hole 341 is smaller than the outer diameter of the conduit 100. The fourth mounting plate 340 is disposed between the first mounting plate 310 and the third mounting plate 330 and moves along the second mounting plate 320.

[0065] Specifically, the mounting bracket 300 further includes a fourth mounting plate 340. A third through hole 341 is provided on the fourth mounting plate 340. The fourth mounting plate 340 is disposed between the first mounting plate 310 and the third mounting plate 330. The aperture of the third through hole 341 is also smaller than the diameter of the outer wall of the conduit 100. The first through hole 311, the second through hole 331, and the third through hole 341 are coaxially arranged. The conduit 100 sequentially passes through the first through hole 311, the second through hole 331, and the third through hole 341. The fourth mounting plate 340 can move along the second mounting plate 320, thereby changing the distance between the fourth mounting plate 340 and the first mounting plate 310 or the third mounting plate 330. The relative sliding of the fourth mounting plate 340 with respect to the second mounting plate 320 can be achieved in the following manner. A sliding sleeve is sleeved on the second mounting plate 320. The fourth mounting plate 340 is fixedly connected to the sliding sleeve. The fourth mounting plate 340 slides relative to the second mounting plate 320 by moving the sliding sleeve. According to the actual requirement of the minimum single injection volume, the position of the fourth mounting plate 340 can be adjusted so that the distance between the fourth mounting plate 340 and the sensor 200 meets the requirement of the minimum single injection volume. Specifically, taking the structure shown in Figure 1 as an example, the sensor 200 is disposed at one end of the second mounting plate 320 close to the first mounting plate 310. The position of the conduit 100 clamped by the first mounting plate 310 is the first position 110 of the conduit 100. The position of the conduit 100 clamped by the third mounting plate 330 is the second position 120 of the conduit 100. The density of the detection member is greater than the density of the fluid. During the injection process, the fluid flows from the second position 120 to the first position 110. According to the requirement of the minimum single injection volume, the position of the fourth mounting plate 340 can be adjusted so that the distance between the fourth mounting plate 340 and the first mounting plate 310 meets the usage requirement. It can be understood that the sensor 200 can also be disposed at one end of the second mounting plate 320 close to the third mounting plate 330. At this time, the density of the detection member should be less than the density of the fluid. During the injection process, the fluid flows from the first position 110 to the second position 120. According to the requirement of the minimum single injection volume, the position of the fourth mounting plate 340 is adjusted so that the distance between the fourth mounting plate 340 and the second mounting plate 320 meets the usage requirement. Through the above setting method, the fluid regulating device can meet various different injection requirements.

[0066] In some specific embodiments of the present invention, scale lines are provided on the second mounting plate 320.

[0067] Specifically, as shown in the figure, scale lines are provided on the second mounting plate 320, and the scale lines can be length scale lines or flow scale lines. Through the above setting method, the position of the fourth mounting plate 340 can be adjusted according to the scale lines according to the requirement of the single injection volume, simplifying the operation of the operator and further improving the work efficiency.

[0068] The following is based on the attached Figure 6 to describe the syringe according to the second aspect embodiment of the present invention.

[0069] The syringe includes the flow detection device of the above first aspect embodiment. The syringe includes a vaccine bottle 500 and a pump body 400. One end of the catheter 100 in the flow detection device is connected to the vaccine bottle 500 in communication, and the other end is connected to the pump body 400 in communication. During the process of the operator inoculating vaccines to poultry or livestock, the flow detection device can remind the operator whether the single injection volume meets the usage requirements, and can also timely remind the operator whether the vaccine bottle is used up, thereby effectively improving the quality of vaccine inoculation.

[0070] The above has described the embodiments of the present invention in detail with reference to the drawings. However, the present invention is not limited to the above embodiments. Various changes can be made without departing from the gist of the present invention within the knowledge scope of those of ordinary skill in the art. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A flow detection device for detecting the flow rate of a fluid, characterized in that, it includes: a conduit, the conduit includes a first position and a second position, and the first position is higher than the second position; a detection member placed in the lumen of the conduit; an inductor, the inductor is arranged outside the conduit for sensing the detection member driven by the fluid to a set position; an alarm, the alarm is used to send an alarm signal according to the sensing result of the inductor, and the alarm signal is at least one of sound and light; the density of the detection member is greater than or less than the density of the fluid. When the density of the detection member is greater than the density of the fluid, the detection member can be driven by the fluid flowing through the conduit and flow from the second position to the first position. When the density of the detection member is less than the density of the fluid, the detection member can be driven by the fluid and flow from the first position to the second position. The pipe diameters of the first position and the second position are smaller than the outer diameter of the detection member, so that the detection member is restricted in the lumen between the first position and the second position. The flow detection device further includes a pipe clamp, and the inductor is fixed on the pipe clamp. The pipe clamp clamps on the conduit so that the inductor can sense the detection member driven by the fluid to the set position.

2. The flow detection device according to claim 1, characterized in that, the conduit is a flexible hose.

3. The flow detection device according to claim 1, characterized in that, it further includes a mounting bracket, the mounting bracket includes a first mounting plate, a second mounting plate and a third mounting plate. One end of the second mounting plate is fixedly connected to the first mounting plate, and the other end of the second mounting plate is connected to the third mounting plate. The first mounting plate is provided with a first through hole, and the third mounting plate is provided with a second through hole. The conduit passes through the first through hole and the second through hole, and the inductor is fixed on the second mounting plate.

4. The flow detection device according to claim 3, characterized in that, the conduit is a flexible hose, and the diameters of the first through hole and the second through hole are both smaller than the outer diameter of the conduit.

5. The flow detection device according to claim 3, characterized in that, at least one of the first mounting plate and the third mounting plate can move along the second mounting plate.

6. The flow detection device according to claim 3, characterized in that, the mounting bracket further includes a fourth mounting plate, the fourth mounting plate is provided with a third through hole, the conduit passes through the third through hole, the diameter of the third through hole is smaller than the outer diameter of the conduit, and the fourth mounting plate is arranged between the first mounting plate and the third mounting plate and can move along the second mounting plate.

7. The flow detection device according to claim 4, characterized in that, scale lines are provided on the second mounting plate.

8. A syringe comprising the flow detection device according to any one of claims 1 to 7.

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