Veterinary ultra-high-speed jet flow precise quantity control needleless injector

Abstract

The invention discloses a veterinary ultra-high-speed jet flow precise quantity control needleless injector, and relates to the technical field of animal husbandry medical equipment, the veterinary ultra-high-speed jet flow precise quantity control needleless injector comprises an injection main body, and the bottom of the injection main body is fixedly connected with a holding part. According to the veterinary ultra-high-speed jet flow precise quantity control needleless injector, by arranging the veterinary nozzle body type self-adaptive telescopic mechanism, the corresponding nozzle target extension length is matched according to the actually measured skin thickness, the nozzle extension length adjustment is automatically completed, and the problems that in the using process of an existing needleless injector, the position of a nozzle is fixed, and the nozzle cannot be adjusted according to the body type of livestock are solved. For example, the injection distance between a piglet and an adult cattle is adjusted, an operator holds a needleless injector manually to keep a set distance difficultly, when the injection distance is too short, jet flow compresses the skin and causes tissue damage, and when the injection distance is too long, jet flow beams diffuse in air due to air resistance and cannot penetrate through the thick skin of the adult cattle and horses, so that the injection distance is too long. The injection is too shallow or too deep.

Description

Technical Field

[0001] This invention relates to the field of animal medical equipment technology, specifically to a veterinary ultra-high-speed jet precision volume control needle-free injector. Background Technology

[0002] Vaccination can effectively prevent and / or reduce the impact of diseases on animals. Large-scale farming is becoming a trend in the current development of animal husbandry, creating a demand for large-scale animal vaccination. Needle-free injectors, due to their advantages such as high injection efficiency, low cross-infection rate, minimal animal stress during injection, large dispersion of the vaccine within the skin after injection, and rapid antibody production, have been widely used in drug injection scenarios in animal husbandry.

[0003] However, the existing devices have the following shortcomings during use: Existing needleless injectors have a fixed nozzle position during use, making it impossible to adjust the spray distance according to the size of the livestock, such as piglets and adult cattle. Operators also find it difficult to maintain the set distance by manually holding the needleless injector. When the spray distance is too close, the jet can compress the skin and cause tissue damage. When the spray distance is too far, the jet beam will diffuse in the air due to air resistance and will not be able to penetrate the thick skin of adult cattle and horses, easily resulting in problems of injection that is too shallow or too deep.

[0004] Therefore, we propose a veterinary ultra-high-speed jet precision volume control needle-free injector to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a high-speed, precision-controlled, needle-free veterinary jet injector. The operator holds the injector and slowly moves one side of the positioning cover close to the animal's injection site. An infrared distance sensor on the circular plate monitors the initial distance between the jet nozzle and the skin in real time. When this distance reaches a preset value, a skin thickness sensor immediately emits ultrasonic waves that penetrate the animal's hair to accurately measure the actual skin thickness. The measurement data is transmitted to a PLC controller in real time. When the positioning cover is in contact with the animal's injection site, a pressure sensor simultaneously monitors the contact force between the positioning cover and the skin. After gently pushing the device to bring the contact force to a preset safety threshold, the PLC controller automatically calls a preset database and matches the corresponding nozzle extension length based on the measured skin thickness. The PLC controller drives an electric telescopic rod to move the movable plate, connecting rod, and fixed plate, thereby pushing the telescopic tube and jet nozzle to slide along the injection body axis, automatically adjusting the nozzle extension length to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a veterinary ultra-high speed jet precision volume control needle-free injector, comprising an injection body, a gripping part fixedly connected to the bottom of the injection body, an ultra-high speed jet quantitative mechanism disposed inside the injection body, a veterinary nozzle body shape adaptive telescopic mechanism disposed on one side of the injection body, and a PLC controller installed on one side of the injection body, the wiring terminal of the PLC controller being connected to the internal wiring of the injector; The veterinary nozzle body shape adaptive telescopic mechanism includes a positioning cover fixedly connected to one side of the injection body. Two pressure sensors are provided on one side of the positioning cover. A telescopic tube is provided on one side of the injection body. A jet nozzle is installed at one end of the telescopic tube. A movable plate is sleeved on the outer side of the injection body. A fixed plate is fixedly sleeved on the outer surface of the telescopic tube. Two connecting rods are fixedly connected between the movable plate and the fixed plate. Three support plates are fixedly connected to both sides of the injection body. An electric telescopic rod is fixedly installed on one side of one of the support plates. The telescopic end of the electric telescopic rod is fixedly connected to the movable plate. A circular plate is fixedly sleeved on the outer surface of the jet nozzle. An infrared ranging sensor and a skin thickness sensor are installed on one side of the circular plate.

[0007] Preferably, the ultra-high-speed jet metering mechanism includes a first mounting cavity, a drug storage cavity, and a second mounting cavity disposed inside the injection body. A first servo motor is fixedly mounted inside the first mounting cavity. A one-way threaded rod is fixedly connected to the output end of the first servo motor, and the smooth end of the one-way threaded rod is rotatably connected to the first mounting cavity. A first guide rod is fixedly connected to the inner side of the first mounting cavity. An adjustment plate is threaded onto the outer surface of the one-way threaded rod and the first guide rod.

[0008] Preferably, a piston rod is fixedly connected to one side of the adjusting plate, one end of the piston rod movably passes through the first mounting cavity and the drug storage cavity and is fixedly connected to a piston plate, and the piston plate is slidably connected to the inner surface of the drug storage cavity. A drug storage bottle is installed on the top of the injection body, and a drug dispensing tube is fixedly connected to the bottom of the drug storage bottle. The bottom end of the drug dispensing tube passes through the injection body and is connected to the inside of the drug storage cavity.

[0009] Preferably, a one-way valve is installed on the drug outlet tube, and a high-pressure electromagnetic drive pump is fixedly installed inside the second mounting cavity. The input end of the high-pressure electromagnetic drive pump is fixedly connected to a first jet tube, and one end of the first jet tube is connected to the inside of the drug storage cavity.

[0010] Preferably, the output end of the high-pressure electromagnetic drive pump is fixedly connected to a second jet tube, one end of which passes through the second mounting cavity and the injection body and is connected to the interior of the telescopic tube.

[0011] Preferably, a screen protection mechanism is provided on one side of the injection body, the screen protection mechanism including a display screen installed on one side of the injection body, and a protective block is fixedly connected to one side of the injection body.

[0012] Preferably, the protective block has two grooves on its inner top and inner bottom. One of the grooves is rotatably connected to a bidirectional threaded rod, and the other groove is fixedly connected to a second guide rod. The outer surfaces of the bidirectional threaded rod and the second guide rod are threaded with two movable frames, and two protective plates are fixedly connected to one side of the two movable frames.

[0013] Preferably, a rotating rod is rotatably connected to the top of the protective block, the bottom end of the rotating rod movably passes through the protective block and extends into one of the grooves, and two bevel gears are fixedly connected to the outer surface of the bidirectional threaded rod and the bottom end of the rotating rod, the two bevel gears meshing together, and a rotating cap is installed at the top of the rotating rod.

[0014] Preferably, an indicator light is installed on the top of the injection body, and a support rod is fixedly connected between the other two support plates, with the movable plate slidably connected to the outer surface of the support rod.

[0015] Preferably, a rubber pad is installed on one side of the positioning cover, and an injection button is provided on one side of the grip.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes a veterinary nozzle with an adaptive telescopic mechanism. The operator holds the nozzle and slowly moves one side of the positioning cover towards the animal's injection site. An infrared distance sensor on the circular plate monitors the initial distance between the jet nozzle and the skin in real time. When this distance reaches a preset value, a skin thickness sensor immediately emits ultrasonic waves that penetrate the animal's hair to accurately measure the actual skin thickness. The measurement data is transmitted to the PLC controller in real time. When the positioning cover is in contact with the animal's injection site, a pressure sensor simultaneously monitors the contact force between the positioning cover and the skin. After gently pushing the device to bring the contact force to a preset safety threshold, the PLC controller automatically calls a preset database and matches the corresponding nozzle target based on the measured skin thickness. The extension length is adjusted automatically by a PLC controller that drives an electric telescopic rod to move a movable plate, connecting rod, and fixed plate. This movement, in turn, pushes the telescopic tube and jet nozzle to slide along the axis of the injection body, thus automatically adjusting the nozzle extension length. This solves the problem that existing needle-free injectors have fixed nozzle positions, making it impossible to adjust the spray distance according to the size of livestock, such as piglets and adult cattle. Operators also find it difficult to maintain the set distance by manually holding the needle-free injector. When the spray distance is too close, the jet can compress the skin and cause tissue damage. When the spray distance is too far, the jet beam will diffuse in the air due to air resistance and cannot penetrate the thick skin of adult cattle and horses, easily resulting in injections that are too shallow or too deep.

[0017] 2. This invention, through the setting of an ultra-high-speed jet metering mechanism, allows for precise drug inhalation and delivery by using a first servo motor to drive a one-way threaded rod to rotate. This, in turn, causes the adjusting plate to move smoothly along the first guide rod, leading to precise sliding of the piston rod and piston plate within the drug storage chamber. Combined with the drug storage bottle, dispensing tube, and one-way valve, this mechanism enables accurate drug inhalation and delivery. The high-pressure electromagnetic drive pump within the second mounting chamber pressurizes the drug within the storage chamber to a high pressure, which is then transported through the first and second jet tubes to the telescopic tube. Finally, the drug is ejected through the jet nozzle to form an ultra-high-speed jet, ensuring penetration of the skin of thick-skinned livestock such as adult cattle and horses, allowing the drug to reach the subcutaneous or muscle layer. This guarantees precise dosage control and ultra-high-speed jet penetration, solving the problems of large dosage errors and insufficient jet velocity in existing equipment, thus reducing waste and ineffective injections of vaccines, antibiotics, and other drugs.

[0018] 3. This invention features a screen protection mechanism. Rotating the rotating rod drives the bidirectional threaded rod to rotate, causing the two movable frames to move in opposite directions along the second guide rod, thereby controlling the opening and closing of the protective plate. When idle, the protective plate is closed, preventing dust and moisture from the livestock farm from contaminating and scratching the display screen. When in use, the protective plate is open, without affecting parameter viewing, thus improving the durability and ease of operation of the equipment. In addition, the rubber pad on one side of the positioning cover reduces hard contact between the equipment and the livestock's skin, reducing stress reactions in the livestock. The injection button on the grip is linked to the PLC controller to achieve one-button start injection. The indicator light on the top of the injection body can provide real-time feedback on the equipment's working status (ready, injecting, fault, etc.), adapting to the high-efficiency needs of single continuous injection in large-scale farming, thus improving the practicality and service life of the equipment. Attached Figure Description

[0019] Figure 1 This is a three-dimensional view of the main structure of a veterinary ultra-high-speed jet precision volume control needle-free injector according to the present invention; Figure 2 This is a three-dimensional view of the bottom structure of a veterinary ultra-high-speed jet precision volume control needle-free injector according to the present invention; Figure 3 This is a three-dimensional view of the rear structure of a veterinary ultra-high-speed jet precision volume control needleless injector according to the present invention; Figure 4 This is a three-dimensional view of the telescopic tube structure in a veterinary ultra-high-speed jet precision volume control needle-free injector of the present invention; Figure 5 This is a three-dimensional view of the support rod structure in a veterinary ultra-high-speed jet precision volume control needle-free injector of the present invention; Figure 6 This is a three-dimensional view of a partially unfolded structure of the screen protection mechanism in a veterinary ultra-high-speed jet precision volume control needle-free injector of the present invention; Figure 7This is a three-dimensional view of a portion of the injection body structure in a veterinary ultra-high-speed jet precision volume control needle-free injector of the present invention; Figure 8 This is a three-dimensional structural view of the one-way valve in a veterinary ultra-high-speed jet precision volume control needleless injector of the present invention.

[0020] In the diagram: 1. Injection body; 2. Grip; 3. Ultra-high-speed jet metering mechanism; 301. First mounting cavity; 302. Drug storage cavity; 303. Second mounting cavity; 304. First servo motor; 305. One-way threaded rod; 306. First guide rod; 307. Adjusting plate; 308. Piston rod; 309. Piston plate; 310. Drug storage bottle; 311. Drug dispensing tube; 312. One-way valve; 313. High-pressure electromagnetic drive pump; 314. First jet tube; 315. Second jet tube; 4. Veterinary nozzle body shape adaptive telescopic mechanism; 401. Positioning cover; 402. Pressure sensor; 403. Telescopic tube; 404. 405. Jet nozzle; 406. Movable plate; 407. Fixed plate; 408. Connecting rod; 409. Support plate; 410. Electric telescopic rod; 411. Circular plate; 412. Infrared ranging sensor; 413. Skin thickness sensor; 414. Indicator light; 415. Support rod; 416. Rubber pad; 417. Injection button; 5. PLC controller; 6. Screen protection mechanism; 601. Display screen; 602. Protective block; 603. Groove; 604. Bidirectional threaded rod; 605. Second guide rod; 606. Moving frame; 607. Protective plate; 608. Rotating rod; 609. Bevel gear; 610. Rotating cap. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figure 1 - Figure 8 As shown, the present invention provides a technical solution: a veterinary ultra-high speed jet precision volume control needle-free injector, including an injection body 1, a gripping part 2 fixedly connected to the bottom of the injection body 1, an ultra-high speed jet quantitative mechanism 3 provided inside the injection body 1, a veterinary nozzle body shape adaptive telescopic mechanism 4 provided on one side of the injection body 1, and a PLC controller 5 installed on one side of the injection body 1, the wiring terminal of the PLC controller 5 being connected to the internal wiring of the injector. The veterinary nozzle body shape adaptive telescopic mechanism 4 includes a positioning cover 401 fixedly connected to one side of the injection body 1. Two pressure sensors 402 are provided on one side of the positioning cover 401. A telescopic tube 403 is provided on one side of the injection body 1. A jet nozzle 404 is installed at one end of the telescopic tube 403. A movable plate 405 is sleeved on the outside of the injection body 1. A fixed plate 406 is fixedly sleeved on the outer surface of the telescopic tube 403. Two connecting rods 407 are fixedly connected between the movable plate 405 and the fixed plate 406. Three support plates 408 are fixedly connected to both sides of the injection body 1. An electric telescopic rod 409 is fixedly installed on one side of one of the support plates 408. The telescopic end of the electric telescopic rod 409 is fixedly connected to the movable plate 405. A circular plate 410 is fixedly sleeved on the outer surface of the jet nozzle 404. An infrared ranging sensor 411 and a skin thickness sensor 412 are installed on one side of the circular plate 410.

[0023] like Figure 1 and Figure 7 As shown, the ultra-high-speed jet metering mechanism 3 includes a first mounting cavity 301, a drug storage cavity 302, and a second mounting cavity 303 disposed inside the injection body 1. A first servo motor 304 is fixedly mounted inside the first mounting cavity 301. A one-way threaded rod 305 is fixedly connected to the output end of the first servo motor 304, and the smooth end of the one-way threaded rod 305 is rotatably connected to the first mounting cavity 301. A first guide rod 306 is fixedly connected to the inner side of the first mounting cavity 301. An adjusting plate 307 is threaded onto the outer surface of the one-way threaded rod 305 and the first guide rod 306. The one-way threaded rod 305 is driven by the first servo motor 304. The rotation of the threaded rod 305, in conjunction with the limiting and guiding action of the first guide rod 306 on the adjusting plate 307, ensures that the adjusting plate 307 moves smoothly along a straight line without deviation or jamming, providing a precise power transmission basis for subsequent quantitative drug delivery. With the high-precision step control of the first servo motor 304 and the stable transmission of the unidirectional threaded rod 305, the piston plate 309 is driven to slide precisely within the drug storage chamber 302. Combined with the dosage conversion algorithm of the PLC controller 5, the drug dosage is precisely controlled, effectively solving the problems of vaccine failure and antibiotic overdose stress caused by large dosage deviations in existing equipment, and meeting the injection requirements for dose-sensitive drugs.

[0024] like Figure 1 , Figure 7 and Figure 8As shown, a piston rod 308 is fixedly connected to one side of the adjusting plate 307. One end of the piston rod 308 movably passes through the first mounting cavity 301 and the drug storage cavity 302 and is fixedly connected to a piston plate 309. The piston plate 309 is slidably connected to the inner surface of the drug storage cavity 302. A drug storage bottle 310 is installed on the top of the injection body 1. A drug dispensing tube 311 is fixedly connected to the bottom of the drug storage bottle 310. The bottom end of the drug dispensing tube 311 passes through the injection body 1 and is connected to the inside of the drug storage cavity 302. The piston plate 308... 9 slides in conjunction with the inner wall of the drug storage chamber 302, and moves synchronously with the adjusting plate 307 via the piston rod 308, achieving precise drug inhalation and quantitative delivery; the drug storage bottle 310 is directly connected to the drug storage chamber 302 via the drug outlet tube 311, simplifying the drug supply path, reducing drug loss during transportation, and the drug storage bottle 310 can be replenished with drugs, adapting to the high-efficiency needs of continuous injection in large-scale breeding; the rigid connection structure of the piston rod 308 ensures no attenuation of power transmission, further improving the accuracy of dosage control.

[0025] like Figure 1 , Figure 7 and Figure 8 As shown, a one-way valve 312 is installed on the drug dispensing tube 311, and a high-pressure electromagnetic drive pump 313 is fixedly installed inside the second mounting cavity 303. The input end of the high-pressure electromagnetic drive pump 313 is fixedly connected to a first jet tube 314. One end of the first jet tube 314 is connected to the inside of the drug storage cavity 302. The one-way valve 312 on the drug dispensing tube 311 can effectively prevent the drug in the drug storage cavity 302 from flowing back to the drug storage bottle 310, avoiding drug contamination, dosage loss or cross-infection, while ensuring that all the drug inhaled each time is used for injection, thus improving drug administration efficiency. The high-pressure electromagnetic drive pump 313 can quickly pressurize the drug in the drug storage cavity 302 to an ultra-high pressure state, solving the problem of insufficient jet speed and inability to penetrate the thick-skinned skin of adult cattle, horses and other livestock in traditional needle-free injectors. The first jet tube 314 achieves a sealed connection between the drug storage cavity 302 and the high-pressure electromagnetic drive pump 313, ensuring no drug leakage under high pressure, and improving injection safety and pressure stability.

[0026] like Figure 1 , Figure 5 and Figure 7As shown, the output end of the high-pressure electromagnetic drive pump 313 is fixedly connected to the second jet tube 315. One end of the second jet tube 315 passes through the second mounting cavity 303 and the injection body 1 and is connected to the interior of the telescopic tube 403. The second jet tube 315 serves as a dedicated delivery channel for high-pressure drugs, passing through the mounting cavity and the injection body 1 and being sealed and connected to the telescopic tube 403. No matter what length the telescopic tube 403 adaptively extends and retracts with the jet nozzle 404 of the veterinary nozzle body shape adaptive telescopic mechanism 4, the continuity and sealing of drug delivery can be maintained, avoiding pressure loss, drug leakage or air ingress caused by extension and retraction. This structure is adapted to the working characteristics of the veterinary nozzle body shape adaptive telescopic mechanism 4, ensuring that the extension and retraction adjustment and the high-pressure jet do not interfere with each other, ensuring both the adaptability of the spray distance and maintaining the penetration force and dosage accuracy of the jet.

[0027] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, a screen protection mechanism 6 is provided on one side of the injection body 1. The screen protection mechanism 6 includes a display screen 601 installed on one side of the injection body 1, and a protective block 602 is fixedly connected to one side of the injection body 1. The display screen 601 can display key parameters such as injection dosage, skin thickness, extension length of jet nozzle 404, and equipment working status (ready / injecting / fault) in real time, which is convenient for operators to quickly view and adjust, reducing the operation threshold and the probability of misoperation. The protective block 602 provides basic physical protection for the display screen 601, blocking dust, droplets, collisions and other factors in the livestock farm environment from directly acting on the surface of the display screen 601, avoiding damage to the display screen 601 or blurry display, extending the service life of electronic components, and adapting to the harsh operating environment of the livestock farm.

[0028] like Figure 1 , Figure 2 and Figure 6 As shown, the protective block 602 has two grooves 603 on its inner top and inner bottom. One groove 603 is rotatably connected to a bidirectional threaded rod 604, and the other groove 603 is fixedly connected to a second guide rod 605. Two movable frames 606 are threaded onto the outer surfaces of the bidirectional threaded rod 604 and the second guide rod 605. Two protective plates 607 are fixedly connected to one side of the two movable frames 606. Through the cooperation of the bidirectional threaded rod 604 and the second guide rod 605, the two movable frames 606 are driven to move synchronously in opposite directions, realizing the precise opening and closing of the protective plates 607. When idle, the protective plates 607 are closed, which can completely isolate the display screen 601 from dust, moisture, and scratches, solving the problem of traditional display screens 601 being easily contaminated and damaged when exposed to the outside. When in use, the protective plates 607 are open, without obstructing the view of the display screen 601, ensuring that parameter viewing is not affected. This structure is compact, does not occupy extra operating space, and balances protection and ease of operation.

[0029] like Figure 1 and Figure 6 As shown, a rotating rod 608 is rotatably connected to the top of the protective block 602. The bottom end of the rotating rod 608 moves through the protective block 602 and extends into one of the grooves 603. Two bevel gears 609 are fixedly connected to the bottom end of the rotating rod 608 on the outer surface of the bidirectional threaded rod 604. The two bevel gears 609 mesh with each other. A rotating cap 610 is installed at the top of the rotating rod 608. The rotating cap 610 drives the rotating rod 608 to rotate. The bevel gears 609 change the transmission direction and drive the bidirectional threaded rod 604 to rotate. The opening and closing of the protective plate 607 can be manually controlled without complicated tools. The operation is labor-saving and quick, which is suitable for the needs of operators wearing gloves or quickly switching operations in aquaculture scenarios.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, an indicator light 413 is installed on the top of the injection body 1. A support rod 414 is fixedly connected between the two support plates 408, and the movable plate 405 is slidably connected to the outer surface of the support rod 414. The indicator light 413 can provide real-time feedback on the working status of the equipment through different color flashing states (such as green for ready, red for injecting, and yellow for fault). Operators do not need to keep an eye on the display screen 601 to quickly judge the status of the equipment, reduce operational errors, and improve the efficiency of continuous injection in large-scale breeding. The support rod 414 cooperates with the electric telescopic rod 409 to provide double guidance and support for the movable plate 405, preventing the movable plate 405 from shifting or shaking during the sliding process, ensuring that the telescopic tube 403 and the jet nozzle 404 extend and retract smoothly along the axis, further improving the adjustment accuracy of the extension length of the jet nozzle 404, and avoiding injection position deviation caused by offset.

[0031] like Figure 2 As shown, a rubber pad 415 is installed on one side of the positioning cover 401, and an injection button 416 is provided on one side of the grip 2. The rubber pad 415 on one side of the positioning cover 401 is made of flexible material, which reduces the hard contact between the equipment and the animal's skin, reduces the animal's stress response (such as struggling and agitation), and avoids skin abrasion, thus improving the safety of the injection process. The injection button 416 is linked with the PLC controller 5, which enables one-button start of injection after parameter confirmation, simplifies the operation process, reduces the number of operation steps and labor intensity of operators, and meets the high-efficiency needs of single continuous injection of multiple animals in large-scale breeding, avoiding low injection efficiency caused by cumbersome operation.

[0032] The usage and working principle of this device: During the preoperative preparation stage, open the sealing cap of the drug storage bottle 310, inject the drug to be injected (such as vaccine, antibiotic) into the bottle, and close the sealing cap tightly. If the device is used for the first time after being idle, rotate the rotating cap 610 on the top of the protective block 602 to drive the rotating rod 608 and the bottom bevel gear 609 to rotate. Through the meshing transmission of the bevel gear 609, the bidirectional threaded rod 604 is rotated, and the two moving frames 606 move in opposite directions along the second guide rod 605, which drives the protective plate 607 to open, revealing the display screen 601 for easy viewing and setting of subsequent parameters. During the parameter setting and automatic adaptation adjustment stage of the veterinary nozzle, press and hold the injection button 416 on the grip 2 to start the equipment. The PLC controller 5 is powered on for self-testing, and the indicator light 413 on the top of the injection body 1 lights up green (indicating normal self-testing). If the indicator light 413 flashes red, check the cable connection or battery power. Input the target injection dose through the display screen 601. Then, the PLC controller 5 controls the first servo motor 304 to start, driving the one-way threaded rod 305 to rotate. The adjusting plate 307 moves smoothly along the first guide rod 306, and the piston rod 308 pulls the piston plate 309 to slide in the drug storage chamber 302. At this time, the one-way valve 312 on the dispensing tube 311 is automatically opened under negative pressure, so that the set dose of drug is drawn into the drug storage chamber 302 through the dispensing tube 311. Then, the operator holds the grip 2 and slowly approaches the side of the positioning cover 401 with the rubber pad 415 towards the animal's injection site. The circular plate 410... The infrared ranging sensor 411 monitors the initial distance between the jet nozzle 404 and the skin in real time. When the distance drops to a preset value, the skin thickness sensor 412 automatically emits ultrasonic waves to measure the actual skin thickness after penetrating the animal's hair. As the device is pushed gently, the rubber pad 415 of the positioning cover 401 is made to fit the skin. The pressure sensor 402 on one side of the positioning cover 401 monitors the contact force. When the contact force reaches a preset safety threshold, the pressure sensor 402 sends a signal to the PLC controller 5. The PLC controller 5 matches the target extension length according to the skin thickness and drives the electric telescopic rod 409 on the support plate 408 to extend and retract, causing the movable plate 405 to slide along the support rod 414. The movable plate 405 pulls the fixed plate 406 through the connecting rod 407, causing the telescopic tube 403 to move along the axis of the injection body 1. Finally, the jet nozzle 404 is adjusted to the target extension length. After the adjustment is completed, the indicator light 413 is constantly green. During the ultra-high-speed jet injection stage, a short press of the injection button 416 triggers the ultra-high-speed jet metering mechanism 3 simultaneously, starting the first servo motor 304 and driving the one-way threaded rod 305 to rotate. The adjusting plate 307 moves smoothly along the first guide rod 306, pushing the piston plate 309 to slide in the drug storage chamber 302 via the piston rod 308, pushing the metered drug through the first jet tube 314 to the high-pressure electromagnetic drive pump 313. The high-pressure electromagnetic drive pump 313 pressurizes the drug to the preset value and delivers it through the second jet tube 315 to the telescopic tube 403. Finally, the ultra-high-speed jet is formed at the target speed through the jet nozzle 404, penetrating the animal's skin and completing the injection. During the injection process, the display screen 601 displays the current dose and jet speed in real time, and the indicator light 413 flashes blue (indicating injection in progress). During the postoperative treatment phase, after the injection is completed, press and hold the injection button 416 again. The PLC controller 5 controls the electric telescopic rod 409 to reset, driving the telescopic tube 403 and the jet nozzle 404 to retract to the initial position. At the same time, the first servo motor 304 reverses, causing the piston plate 309 to return to the initial end of the drug storage chamber 302, which is convenient for the next drug aspiration. Rotate the rotating cap 610 to close the protective plate 607 and protect the display screen 601 from dust contamination.

[0033] The wiring diagrams for the first servo motor 304, high-pressure electromagnetic drive pump 313, pressure sensor 402, electric telescopic rod 409, infrared ranging sensor 411, skin thickness sensor 412, indicator light 413, injection button 416, PLC controller 5, and display screen 601 in this invention are common knowledge in the field, and their working principles are well-known technologies. The appropriate model is selected according to actual use. Therefore, the control methods and wiring layouts for the first servo motor 304, high-pressure electromagnetic drive pump 313, pressure sensor 402, electric telescopic rod 409, infrared ranging sensor 411, skin thickness sensor 412, indicator light 413, injection button 416, PLC controller 5, and display screen 601 will not be explained in detail.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A veterinary ultra-high-speed jet precision volume control needle-free injector, characterized in that, The syringe includes an injection body (1), a grip (2) is fixedly connected to the bottom of the injection body (1), an ultra-high speed jet metering mechanism (3) is provided inside the injection body (1), a veterinary nozzle body shape adaptive telescopic mechanism (4) is provided on one side of the injection body (1), and a PLC controller (5) is installed on one side of the injection body (1). The wiring terminal of the PLC controller (5) is connected to the internal wiring of the syringe. The veterinary nozzle body shape adaptive telescopic mechanism (4) includes a positioning cover (401) fixedly connected to one side of the injection body (1). Two pressure sensors (402) are provided on one side of the positioning cover (401). A telescopic tube (403) is provided on one side of the injection body (1). A jet nozzle (404) is installed at one end of the telescopic tube (403). A movable plate (405) is sleeved on the outside of the injection body (1). A fixed plate (406) is fixedly sleeved on the outer surface of the telescopic tube (403). The movable plate (405) and the fixed plate (406) are connected to the outer surface of the telescopic tube (403). Two connecting rods (407) are fixedly connected between the fixed plates (406). Three support plates (408) are fixedly connected to both sides of the injection body (1). An electric telescopic rod (409) is fixedly installed on one side of one of the support plates (408). The telescopic end of the electric telescopic rod (409) is fixedly connected to the movable plate (405). A circular plate (410) is fixedly sleeved on the outer surface of the jet nozzle (404). An infrared ranging sensor (411) and a skin thickness sensor (412) are installed on one side of the circular plate (410).

2. The veterinary ultra-high-speed jet precision volume control needle-free injector according to claim 1, characterized in that: The ultra-high-speed jet metering mechanism (3) includes a first mounting cavity (301), a drug storage cavity (302), and a second mounting cavity (303) disposed inside the injection body (1). A first servo motor (304) is fixedly installed on the inner side of the first mounting cavity (301). A one-way threaded rod (305) is fixedly connected to the output end of the first servo motor (304), and the smooth end of the one-way threaded rod (305) is rotatably connected to the first mounting cavity (301). A first guide rod (306) is fixedly connected to the inner side of the first mounting cavity (301). An adjustment plate (307) is threadedly installed on the outer surface of the one-way threaded rod (305) and the first guide rod (306).

3. The veterinary ultra-high-speed jet precision volume control needle-free injector according to claim 2, characterized in that: A piston rod (308) is fixedly connected to one side of the adjusting plate (307). One end of the piston rod (308) passes through the first mounting cavity (301) and the drug storage cavity (302) and is fixedly connected to a piston plate (309). The piston plate (309) is slidably connected to the inner surface of the drug storage cavity (302). A drug storage bottle (310) is installed on the top of the injection body (1). A drug dispensing tube (311) is fixedly connected to the bottom of the drug storage bottle (310). The bottom end of the drug dispensing tube (311) passes through the injection body (1) and is connected to the inside of the drug storage cavity (302).

4. The veterinary ultra-high-speed jet precision volume control needle-free injector according to claim 3, characterized in that: A one-way valve (312) is installed on the drug outlet pipe (311), and a high-pressure electromagnetic drive pump (313) is fixedly installed on the inner side of the second mounting cavity (303). The input end of the high-pressure electromagnetic drive pump (313) is fixedly connected to a first jet pipe (314), and one end of the first jet pipe (314) is connected to the inside of the drug storage cavity (302).

5. A veterinary ultra-high-speed jet precision volume control needle-free injector according to claim 4, characterized in that: The output end of the high-pressure electromagnetic drive pump (313) is fixedly connected to the second jet tube (315). One end of the second jet tube (315) passes through the second mounting cavity (303) and the injection body (1) and is connected to the interior of the telescopic tube (403).

6. The veterinary ultra-high-speed jet precision volume control needle-free injector according to claim 1, characterized in that: A screen protection mechanism (6) is provided on one side of the injection body (1). The screen protection mechanism (6) includes a display screen (601) installed on one side of the injection body (1). A protective block (602) is fixedly connected to one side of the injection body (1).

7. A veterinary ultra-high-speed jet precision volume control needle-free injector according to claim 6, characterized in that: The protective block (602) has two grooves (603) on its inner top and inner bottom. A bidirectional threaded rod (604) is rotatably connected in one of the grooves (603), and a second guide rod (605) is fixedly connected in the other groove (603). Two movable frames (606) are threaded on the outer surfaces of the bidirectional threaded rod (604) and the second guide rod (605). Two protective plates (607) are fixedly connected to one side of the two movable frames (606).

8. A veterinary ultra-high-speed jet precision volume control needle-free injector according to claim 7, characterized in that: The top of the protective block (602) is rotatably connected to a rotating rod (608). The bottom end of the rotating rod (608) moves through the protective block (602) and extends into one of the grooves (603). The outer surface of the bidirectional threaded rod (604) is fixedly connected to the bottom end of the rotating rod (608) with two bevel gears (609). The two bevel gears (609) mesh with each other. A rotating cap (610) is installed on the top of the rotating rod (608).

9. A veterinary ultra-high-speed jet precision volume control needle-free injector according to claim 1, characterized in that: An indicator light (413) is installed on the top of the injection body (1), and a support rod (414) is fixedly connected between the other two support plates (408), and a movable plate (405) is slidably connected to the outer surface of the support rod (414).

10. A veterinary ultra-high-speed jet precision volume control needle-free injector according to claim 1, characterized in that: A rubber pad (415) is installed on one side of the positioning cover (401), and an injection button (416) is provided on one side of the grip (2).

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