Power device of powder ejector

Abstract

The utility model discloses a power device of a powder ejector, which comprises a vibration generating device used for providing exciting force for a mounting seat in the powder ejector, a mounting frame used for mounting the vibration generating device and a clamping piece used for transmitting the exciting force to the mounting seat, and the fixed end of the clamping piece is fixedly connected with the top of the mounting seat. The free end is mounted at the top of the mounting rack; wherein the axis of the clamping piece is perpendicular to the axis of the motor, the vibration generating device comprises the motor installed on the installation frame and an upper eccentric wheel fixed to an output shaft of the motor, the axis of the motor is parallel to the axis of the installation base, and the upper eccentric wheel is lower than the top of the installation base and higher than the bottom of the installation base. Vibration generated by the eccentric wheel is transmitted through the clamping piece on the top of the eccentric wheel, powder can be well fluffy, powder discharging can be achieved more easily by means of the gravity of the eccentric wheel, and therefore the powder discharging effect is improved.

Description

Technical Field

[0001] The utility model relates to a power device in a device which utilizes airflow to drive powder injection. Background Art

[0002] Endoscopic hemostasis is increasingly being used to treat bleeding during surgery, gastrointestinal bleeding, and bleeding during the extraction of internal tissue for tissue examination. This endoscopic hemostasis is a method in which an endoscopic catheter inserted into the body is brought close to a mucosal injury site where hemostasis is required, and a powdered hemostatic agent is injected and sprayed through the catheter to stop bleeding.

[0003] Therefore, medical powder injectors for achieving the above-mentioned purpose have appeared on the market. One of such medical powder injectors adopts the same principle as that of a spray sprayer and works in the following manner, that is, after a hemostatic agent is put into a pipe formed in the injector, compressed air is supplied to the pipe to spray and apply the hemostatic agent to the affected area. However, if the amount of medicine filled in the pipe is too small, this powder injector will not be able to form an effective treatment effect. On the contrary, if the amount of medicine is too large, the pipe will be blocked and the spraying will not be possible. Therefore, it is difficult to achieve fine control of powder spraying.

[0004] In order to solve the above technical problems, the applicant provides a refined powder injection device (CN202310595028.3), including a powder delivery device, which is provided with a mounting seat for installing a powder container and a nozzle for spraying powder; after the powder container is installed in the mounting seat, the powder inside can enter the nozzle under the action of gravity; the gas interface for connecting the gas source is provided on the nozzle and is located between the nozzle inlet and outlet; a powder switch is provided at the inlet of the nozzle, which can open or close the passage between the powder container and the nozzle. The size of the powder flow is determined by the opening of the powder container and the switch channel, and the size of the sieve holes on the sieve plate, while the powder blowing speed is determined by the size of the airflow. The refinement of the powder output can be improved by controlling these two aspects.

[0005] In order to ensure smooth powder falling and more precisely control the amount of powder output, a sieve plate is provided at the opening of the powder container in the above prior art, and the sieve plate has at least two sieve holes. A vibration generating device is provided at the mounting seat to transmit vibration to the powder container. There are at least two sieve holes to prevent powder from accumulating at the opening and blocking the opening, and the high-frequency vibration generated by the vibration generating device makes the powder more fluffy and prevents the compacted powder from blocking the outlet.

[0006] However, in actual use, it is found that the smoothness of powder discharge caused by the vibration generated by the vibration generating device still needs to be improved. Utility Model Content

[0007] The utility model aims to provide a power device of a powder injector, which can partially solve or alleviate the above-mentioned problems, thereby improving the powder discharge condition of the powder container in the existing powder injector.

[0008] In order to solve the technical problems mentioned above, the utility model specifically adopts the following technical solutions: a power device of a powder injector, comprising a vibration generating device for providing an exciting force to a mounting seat in the powder injector, a mounting frame for mounting the vibration generating device, and a clip for transmitting the exciting force generated by the vibration generating device to the mounting seat, the fixed end of the clip is fixedly connected to the top of the mounting seat, and the free end of the clip is mounted on the top of the mounting frame; wherein the vibration generating device comprises a motor mounted on the mounting frame, and an upper eccentric wheel fixed on the output shaft of the motor, the axis of the motor is parallel to the axis of the mounting seat, the height of the upper eccentric wheel is lower than the height of the top of the mounting seat and higher than the height of the bottom of the mounting seat, and the axis of the clip is perpendicular to the axis of the motor.

[0009] As an improvement, a lower eccentric wheel is further arranged on the output shaft of the motor; the upper eccentric wheel and the lower eccentric wheel are staggered up and down, and the staggered angle is 40-50°.

[0010] As an improvement, the center line of the upper eccentric wheel in the height direction coincides with the center line of the mounting seat in the height direction.

[0011] As an improvement, the mass of the upper eccentric wheel is 0.3-1.2 grams, and the rotation speed of the motor is 6000-8000 rpm.

[0012] As an improvement, the mass of the upper eccentric wheel and the lower eccentric wheel is 0.3-1.2 grams, and the rotation speed of the motor is 6000-8000 rpm.

[0013] As an improvement, the clip extends radially from the top edge of the mounting seat to the free end, and a clamping portion is provided at the free end, and the axis of the clamping portion coincides with the axis of the motor.

[0014] As an improvement, the power device is further provided with a connecting groove above the mounting frame, and the free end of the clip is clamped in the connecting groove.

[0015] As an improvement, the clip is made of medical grade PVC.

[0016] As an improvement, the clip is in the shape of a rectangular sheet with a width of 14 to 15 mm and a length of 10 to 11 mm.

[0017] As an improvement, the powder injector includes a powder delivery device, which is provided with a mounting seat for mounting a powder container and a nozzle for spraying powder; a gas interface for connecting a gas source is arranged on the nozzle and is located between an inlet and an outlet of the nozzle; a powder switch is arranged at the inlet of the nozzle, which can open or close the passage between the powder container and the nozzle; a sieve plate is arranged at the opening of the powder container, and the sieve plate has at least two sieve holes, wherein the nozzle is coaxially arranged with the powder container installed in the mounting seat, and the gas interface is perpendicular to the axial direction of the nozzle; the nozzle is a cone with a large inlet and a small outlet, and the nozzle outlet has a 90° bend, so that the direction of the nozzle outlet is consistent with the direction of the gas interface; the inner diameter L1 at the connection between the nozzle and the gas interface is twice or more than twice the inner diameter L2 at the outlet of the gas interface.

[0018] The utility model is beneficial in that: the utility model reverses the technical prejudice that only vibration in the up and down directions can make the powder in the powder container more fluffy and thus discharge the powder smoothly, and makes the axis of the motor parallel to the axis of the mounting seat, so that the vibration generated by the eccentric wheel is in a planar direction, and the transmission is realized through the clips on the mounting seat, so that the powder not only vibrates up and down in the vertical direction, but also rotates around a center in the horizontal plane, so that the powder can be made fluffy well, and it is easier to discharge the powder by relying on its own gravity, thereby improving the powder discharge effect.

[0019] The height of the eccentric wheel is within the height range of the mounting seat (i.e., the height of the upper eccentric wheel in the vertical plane is higher than the height of the bottom of the mounting seat in the vertical plane, and lower than the height of the top of the mounting seat in the vertical plane). The vibration of the eccentric wheel is directly transmitted to the position of the mounting seat, so that the powder at this position becomes fluffy through vibration to avoid clogging the sieve holes.

[0020] In order to avoid resonance caused by synchronous vibration of the two eccentric wheels, the two eccentric wheels are staggered up and down, and the staggered angle is 40-50 degrees. This arrangement prevents the vibrations generated by the upper and lower eccentric wheels from being superimposed, increases the frequency of the vibration rather than the amplitude of the vibration, thereby increasing the speed of the circumferential movement of the powder, and thus better avoids clogging of the sieve holes (especially for powders with specifications of 0.25g-0.75g). BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without paying creative labor.

[0022] Figure 1a and Figure 1b This is a schematic diagram of the appearance structure of a powder injector according to an exemplary embodiment of the present utility model;

[0023] Figure 1c for Figure 1b An exploded view of the powder injector shown;

[0024] Figure 2 This is a schematic structural diagram of a powder injector according to an exemplary embodiment of the present utility model after the front shell and the left shell are uncovered;

[0025] Figure 3a and Figure 3b It is an enlarged view of a vibration generating device in a powder injector according to an exemplary embodiment of the present utility model;

[0026] Figure 4 It is a logo diagram of a vibration generating device in a powder injector according to an exemplary embodiment of the present utility model being arranged at different positions;

[0027] Figure 5 It is an enlarged view of the nozzle in a powder injector according to an exemplary embodiment of the present invention.

[0028] Markings in the figure: 1 powder container, 2 quick release button, 3 powder delivery device, 4 powder switch, 6 vibration generating device, 7 front shell, 8 left shell, 9 air pump, 10 battery, 11 nozzle, 12 gas interface, 13 mounting seat, 14 motor bracket, 15 clip, 151 clamping protrusion, 6 trigger switch, 161 driving pawl, 162 first transmission rod, 163 mounting groove, 17 circuit board, 18 clip groove, 61 motor, 62 eccentric wheel;

[0029] O1 axis of the motor; O2 axis of the powder container / mounting seat; O3 axis of the clip (parallel to its length extension direction); O4 axis of the nozzle; O5 midline (or axis of symmetry) of the motor projection on the vertical plane; O6 horizontal midline of the upper eccentric projection on the vertical plane. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Herein, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0032] In this document, the terms "upper", "lower", "inner", "outer", "front", "rear", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In this document, unless otherwise clearly specified or limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] Herein, "and / or" includes any and all combinations of one or more of the listed related items. Herein, "plurality" means two or more, that is, it includes two, three, four, five, etc.

[0035] In order to solve the problem of powder discharge from the powder container, as shown in Figures 1 to 3, the utility model provides a powder injector, including a powder delivery device 3, on which a mounting seat 13 for mounting a powder container 1 and a nozzle 11 for spraying powder are provided; a gas interface 12 for connecting a gas source is provided on the nozzle 11 and is located between the inlet and the outlet of the nozzle 11; a powder switch 4 is provided at the inlet of the nozzle 11, which can open or close the passage between the powder container 1 and the nozzle 11; a sieve plate is provided at the opening of the powder container 1, and only at least two sieve holes are provided on the sieve plate; a vibration generating device 6 is provided at the mounting seat 13; the vibration generating device 6 includes a motor 61 and at least one eccentric wheel 62 fixed on the output shaft of the motor 61; the vibration generating device 6 transmits vibration to the mounting seat 13 by means of a clip 15, and the axis O1 of the motor 61 is parallel to the axis O2 of the mounting seat 3.

[0036] In a prior art fine powder injection device (CN202310595028.3), although the specific structure and installation details of the vibration generating device are not described, it can be seen from the accompanying drawings that, similar to a general vibration generating device, it is composed of a motor and an eccentric wheel, and the axis of the motor is perpendicular to the axis of the mounting base, so that the vibration direction generated by the eccentric wheel is in the up and down direction, thereby causing the powder in the powder container to vibrate up and down.

[0037] It is assumed that the up and down vibration will make the powder in the powder container more fluffy and thus discharge the powder smoothly. But in fact, the powder in the powder container is affected by the up and down vibration and gravity at the same time, which causes turbulence in the powder container and causes the powder to collide with each other. The powder that originally fell by gravity will return to the powder container when it is vibrated upward, affecting the efficiency of powder discharge.

[0038] In the utility model, the axis of the motor 61 is parallel to the axis of the mounting seat 13, so that the vibration generated by the eccentric wheel 62 is in a planar direction (that is, the projection of the vibration trajectory of the vibrating body on the horizontal plane is a circle or an ellipse), and is transmitted only through the clip on the mounting seat, so that in addition to vibrating up and down in the vertical direction or the axial direction of the powder container, the powder will also rotate around a center in the horizontal plane (such as circular motion), which can make the powder fluffy and make it easier to discharge the powder by its own gravity.

[0039] In some embodiments, the eccentric wheel 62 is disposed at the upper end of the motor 61, and its height is within the height range of the mounting seat 13 (i.e., the height of the plane where the eccentric wheel 62 is located in the vertical plane is lower than the height of the top of the mounting seat 13 in the vertical plane, and lower than the height of the bottom of the mounting seat 13 in the vertical plane, such as Figure 3bThe vibration of the eccentric wheel 61 is directly transmitted to the position of the mounting seat 13, so that the powder at this position becomes fluffy through the vibration, thereby avoiding clogging of the sieve hole.

[0040] In other embodiments, eccentric wheels 62 are provided at both ends of the output shaft of the motor 61; the height of the upper eccentric wheel 62 (or upper eccentric wheel) is within the height range of the mounting seat 13. The vibration of the two eccentric wheels 62 can improve the vibration efficiency.

[0041] In order to avoid resonance caused by synchronous vibration of the two eccentric wheels 62, the two eccentric wheels 62 are staggered up and down, and the staggered angle is 40-50 degrees; the so-called staggered up and down means that if the upper eccentric wheel 62 is installed at the 12 o'clock direction on its plane, the lower eccentric wheel 62 is installed at other directions on its plane. Such an arrangement prevents the vibrations generated by the upper and lower eccentric wheels 62 from being superimposed, thereby increasing the frequency of the vibration rather than the amplitude of the vibration.

[0042] In this embodiment, the mass of the eccentric wheel 62 is 0.3 g to 1.2 g, and the speed of the motor 61 is 6000 rpm to 8000 rpm. Figure 4 And the following table 1. In this state, the powder output state is optimal.

[0043] Table 1 shows the different eccentric weights, spraying effects and powder residues of different installation positions for one eccentric wheel. Figure 4 The dotted box at the A1 position), Figure 4 Middle motor position), down ( Figure 4 The dotted box at position A3 in the figure is as follows Figure 4 As shown. (Of course, in addition to the positions shown in the figure, other positions were also tested, but the powder spraying effects were not ideal. Here, only some positions were selected for comparison of spraying effects).

[0044] Table 1 Spraying effect of different eccentric wheel weights and installation positions

[0045]

[0046] Table 2 shows the spraying effect and powder residue at different offset angles when two eccentric wheels (each eccentric wheel weighs 1.2 g) are used.

[0047] Table 2 Injection effects at different staggered angles and different rotation speeds

[0048] It can be seen that when there is one eccentric wheel, the gram weight is 0.3 grams to 1.2 grams, and the motor position is at H1 (that is, the height difference H1 between the midline of the motor projection on the vertical plane and the midline of the nozzle outlet projection on the vertical plane or the axis of the nozzle outlet), the effect is better; when there are two eccentric wheels (the two eccentric wheels have the same gram weight) and the same position (that is, the motor position is at H1), the staggered angle of the two eccentric wheels is best at about 45°.

[0049] In addition, in order to facilitate the installation of the vibration generating device 6, the utility model further includes a motor bracket 14 for installing the motor, and a connecting groove 18 is provided at the upper end of the motor bracket 14, and a clip 15 is clamped in the connecting groove 18. That is, the vibration generating device, the motor bracket, and the clip constitute the power device of the powder injector, and the clip transmits the vibration excitation generated by the generating device to the mounting seat on which the powder container is installed. More specifically, the free end of the clip 15 is located on the axis of the motor 61, so that the clip 15 can better transmit the vibration.

[0050] More preferably, a snap-fit ​​protrusion 150 (or snap-fit ​​portion) extending in the direction close to the motor is provided at the free end, which cooperates with the groove at the bottom of the above-mentioned connecting groove, and the axis of the snap-fit ​​protrusion (or the center line projected in the vertical plane) coincides with the axis O1 of the motor.

[0051] Generally speaking, in order to better transmit vibration, a clip is set on the top and bottom of the motor respectively (that is, an upper and lower clip is set), or a transmission clip is set on the front and rear sides of the motor respectively (that is, a left and right clip is set). However, according to actual use, when clips are set on the front and rear sides of the motor respectively, the amount of powder residue in the powder container is larger than the amount of powder residue when a single upper clip is set. Specifically, see Table 3 below.

[0052] Table 3 Powder residue of different numbers and positions of clips with single / double eccentric wheels

[0053]

[0054] In this embodiment, the clip 15 is made of medical grade PVC. Preferably, the clip 14 is a rectangular sheet with a width of 14-15 mm and a length of 10-11 mm. It is used to cooperate with the rotation speed of the motor 61 and the gram weight of the eccentric wheel 62 to achieve a better vibration effect.

[0055] In some embodiments, the powder injector also includes: a transmission mechanism, specifically, it includes a trigger switch 16 (for example, a manual trigger) arranged on the housing, a driving pawl 161 linked to the trigger switch 16, and a first transmission rod for transmitting the driving force of the driving pawl to the powder switch 4, and an elastic reset member (such as a reset spring, specifically, it passes through the mounting groove 163 arranged on the housing) for driving the first transmission rod and the driving pawl to reset, and its two ends respectively abut against the first transmission rod 162 and the powder switch.

[0056] In some embodiments, the above-mentioned driving pawl includes a rotating disk rotatably mounted on the outer shell, and two pawls that can rotate synchronously with the rotating disk, one of which cooperates with the trigger switch 16, and the other pawl abuts against one end of the first transmission rod 162, and the other end of the first transmission rod 162 abuts against the operating knob of the powder switch 4.

[0057] When an external force acts on the trigger switch, the driving pawl rotates, and its other pawl rotates in the direction close to the powder deliverer (parallel to the direction of the gas interface), thereby driving the first transmission rod to move forward. The first transmission rod pushes an operating knob of the powder switch forward and compresses the elastic reset member; when the external force is removed, under the action of the elastic reset member, the operating knob of the powder switch is reset, thereby driving the second transmission rod and the driving pawl to reset.

[0058] like Figure 5 As shown, after the powder container 1 of the utility model is installed in the mounting seat 13, the powder inside can enter the nozzle 11 under the action of gravity; the mounting seat 13 and the powder container can be connected by threads, which is convenient for disassembly and replacement. The gas interface 12 for connecting the gas source is set on the nozzle 11 and is located between the inlet and outlet of the nozzle 11; the powder switch 4 is set at the inlet of the nozzle 11, which can open or close the passage between the powder container 1 and the nozzle 11.

[0059] The present invention does not directly inject powder by airflow into the powder container 1, but relies on the gravity of the powder itself to fall from the powder container 1 into the nozzle 11, and then mix with the airflow for injection. Therefore, at least during use, the powder container 1 should be located above the nozzle 11 and open downward so that the powder in the powder container 1 can fall into the nozzle by its own gravity without the help of external force.

[0060] The airflow ejected from the gas interface 12 (whose inner hole is reduced in diameter to increase the air pressure of the injection) first acts as a medium to carry the powder for injection, and then it is necessary to maintain the positive pressure in the nozzle to prevent backflow when idle. In the utility model, the airflow ejected from the gas interface 12 can also control the falling of the powder. When the airflow is large, the airflow will form a strong positive pressure in the nozzle, thereby hindering the falling speed of the powder. When the airflow is small, the falling speed of the powder will increase.

[0061] In order to better control the falling of powder by airflow, the nozzle 11 described in the utility model is coaxially arranged with the powder container 1 installed in the mounting seat 13, and the gas interface 12 is perpendicular to the axial direction of the nozzle 11. At this time, the blown airflow will be divided into two parts, one part will hinder the falling of powder to the inlet of the nozzle 13, and the other part will carry the powder to the outlet of the nozzle 13 for spraying. Since the nozzle 11 in the utility model is a cone with a large inlet and a small outlet, a certain pressure difference is formed between the upper and lower parts, which will not completely hinder the falling of powder. In this embodiment, the inner diameter L1 at the connection between the nozzle 11 and the gas interface 12 is twice or more than twice the inner diameter L2 at the outlet of the gas interface 12. In this way, the airflow can carry the powder for spraying and control the falling of the powder, and will not completely block the falling of the powder, resulting in no falling of powder.

[0062] For ease of operation, in some embodiments, the nozzle 11 outlet has a 90° bend, so that the direction of the nozzle 11 outlet is consistent with the direction of the gas interface 12 .

[0063] In addition, the powder delivery device 3 of the present invention comprises a cavity, and the powder switch 4 is arranged in the cavity and can rotate. A knob for easy rotation is arranged on one end of the powder switch 4 extending out of the powder delivery device 3, and a switch fixing seat 5 for fixing it on the powder delivery device 3 is arranged on the other end. The powder switch 4 is provided with a channel for connecting the powder container 1 and the nozzle 11. The switch is switched between the on and off states by rotating, making the switch more convenient.

[0064] In addition, it can be foreseen that when powder falls, the sieve holes on the sieve plate 2 must be located within the channel range of the powder switch 4 and face the channel to allow the powder to fall most smoothly.

[0065] In the utility model, the air source is preferably an air pump 9. The air pump 9 is connected to the air filter 7 by a connecting pipe 8. It is foreseeable that a battery 10 for powering the air pump 9 is also included. Of course, the method of directly plugging in the wires to work is not excluded. In the utility model, a battery compartment is provided at the tail end of the air pump 9, and the battery 10 is in the shape of a rod and plugged into the battery compartment. There is an obtuse angle between the battery compartment and the air pump, so that the battery compartment can be used as a handle for holding; it also includes a trigger for controlling the operation of the air pump.

[0066] In order to shield the internal components, an outer shell is also included, which includes a front shell 7 and a left shell 8 and a right shell; the front shell 7 and the left shell 8 and the right shell are all provided with a quick release button 2.

[0067] In order to facilitate replacement or maintenance of the powder delivery device, the housing is divided into three parts in this embodiment, namely the front housing and the left and right side housings, so that when the front end of the powder delivery device needs to be replaced as a whole, the front housing can be directly removed from the left and right side housings by a quick button, so that the powder delivery device can be quickly removed. Similarly, in order to facilitate replacement and maintenance of components such as the vibration motor and the circuit board, the left and right side housings can be unlocked directly by a quick button, so as to be quickly disassembled.

[0068] When working, the gas source is normally open. When powder needs to be sprayed, the powder switch 4 is turned to the open state through the trigger. At this time, the direct passage between the powder container 1 and the nozzle 12 is connected, and the vibration generating device causes the powder to fall into the inner cavity of the nozzle by gravity through vibration and mix with the airflow in the gas interface before spraying. When powder does not need to be sprayed, the powder switch 4 is turned to the closed state. At this time, the airflow in the gas interface 12 forms a positive pressure in the nozzle to prevent backflow.

[0069] The utility model is suitable for scenes where fine control of powder spraying is required, such as hemostasis work for small-area and multiple wounds. The utility model can be used to finely spray hemostatic powder and apply it to multiple wounds.

[0070] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0071] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all fall within the protection of the utility model.

Claims

1. A power device for a powder injector, characterized in that: It includes a vibration generating device for providing an exciting force to a mounting seat in the powder injector, a mounting frame for mounting the vibration generating device, and a clip for transmitting the exciting force generated by the vibration generating device to the mounting seat, wherein the fixed end of the clip is fixedly connected to the top of the mounting seat, and the free end of the clip is mounted on the top of the mounting frame; wherein the vibration generating device includes a motor mounted on the mounting frame, and an upper eccentric wheel fixed on the output shaft of the motor, the axis of the motor is parallel to the axis of the mounting seat, the height of the upper eccentric wheel is lower than the height of the top of the mounting seat and higher than the height of the bottom of the mounting seat, and the axis of the clip in the extension direction of its length is perpendicular to the axis of the motor.

2. The power device of a powder injector according to claim 1, characterized in that: A lower eccentric wheel is also arranged on the output shaft of the motor; the upper eccentric wheel and the lower eccentric wheel are staggered up and down, and the staggered angle is 40° to 50°.

3. A power device for a powder injector according to claim 1 or 2, characterized in that: The center line of the upper eccentric wheel in the height direction coincides with the center line of the mounting seat in the height direction.

4. The power device of a powder injector according to claim 1, characterized in that: The mass of the upper eccentric wheel is 0.3 g to 1.2 g, and the rotation speed of the motor is 6000 rpm to 8000 rpm.

5. The power device of a powder injector according to claim 2, characterized in that: The masses of the upper eccentric wheel and the lower eccentric wheel are both 0.3 g to 1.2 g, and the rotation speed of the motor is 6000 rpm to 8000 rpm.

6. The power device of a powder sprayer according to claim 1, characterized in that: A connecting groove is arranged above the mounting frame, and the free end of the clip is clamped in the connecting groove.

7. A power device for a powder sprayer according to claim 6, characterized in that: The clip radially extends from the top edge of the mounting seat to the free end, and a clamping portion clamped with the connecting groove is provided at the free end, and the axis of the clamping portion coincides with the axis of the motor.

8. A power device for a powder sprayer according to claim 1 or 2, characterized in that: The clip is made of medical grade PVC.

9. A power device for a powder injector according to claim 1 or 2, characterized in that: The clip of the power device is a rectangular sheet with a width of 14mm to 15mm and a length of 10mm to 11mm.

10. A power device for a powder injector according to any one of claims 1 or 2 or 4-7, characterized in that: The powder injector includes a powder delivery device, which is provided with a mounting seat for mounting a powder container and a nozzle for spraying powder; a gas interface for connecting a gas source is arranged on the nozzle and is located between the nozzle inlet and the nozzle outlet; a powder switch is arranged at the inlet of the nozzle, which can open or close the passage between the powder container and the nozzle; a sieve plate is arranged at the opening of the powder container, and only at least two sieve holes are provided on the sieve plate, wherein the nozzle is coaxially arranged with the powder container installed in the mounting seat, and the gas interface is perpendicular to the axial direction of the nozzle; the nozzle is a cone with a large inlet and a small outlet, and the nozzle outlet has a 90° bend, so that the nozzle outlet direction is consistent with the gas interface direction; the inner diameter L1 at the connection between the nozzle and the gas interface is twice or more than twice the inner diameter L2 at the gas interface outlet.

11. The power device of a powder sprayer according to claim 3, characterized in that: The powder injector includes a powder delivery device, which is provided with a mounting seat for mounting a powder container and a nozzle for spraying powder; a gas interface for connecting a gas source is arranged on the nozzle and is located between the nozzle inlet and the nozzle outlet; a powder switch is arranged at the inlet of the nozzle, which can open or close the passage between the powder container and the nozzle; a sieve plate is arranged at the opening of the powder container, and only at least two sieve holes are provided on the sieve plate, wherein the nozzle is coaxially arranged with the powder container installed in the mounting seat, and the gas interface is perpendicular to the axial direction of the nozzle; the nozzle is a cone with a large inlet and a small outlet, and the nozzle outlet has a 90° bend, so that the nozzle outlet direction is consistent with the gas interface direction; the inner diameter L1 at the connection between the nozzle and the gas interface is twice or more than twice the inner diameter L2 at the gas interface outlet.

12. The power device of a powder sprayer according to claim 8, characterized in that: The powder injector includes a powder delivery device, which is provided with a mounting seat for mounting a powder container and a nozzle for spraying powder; a gas interface for connecting a gas source is arranged on the nozzle and is located between the nozzle inlet and the nozzle outlet; a powder switch is arranged at the inlet of the nozzle, which can open or close the passage between the powder container and the nozzle; a sieve plate is arranged at the opening of the powder container, and only at least two sieve holes are provided on the sieve plate, wherein the nozzle is coaxially arranged with the powder container installed in the mounting seat, and the gas interface is perpendicular to the axial direction of the nozzle; the nozzle is a cone with a large inlet and a small outlet, and the nozzle outlet has a 90° bend, so that the nozzle outlet direction is consistent with the gas interface direction; the inner diameter L1 at the connection between the nozzle and the gas interface is twice or more than twice the inner diameter L2 at the gas interface outlet.

13. The power device of a powder sprayer according to claim 9, characterized in that: The powder injector includes a powder delivery device, which is provided with a mounting seat for mounting a powder container and a nozzle for spraying powder; a gas interface for connecting a gas source is arranged on the nozzle and is located between the nozzle inlet and the nozzle outlet; a powder switch is arranged at the inlet of the nozzle, which can open or close the passage between the powder container and the nozzle; a sieve plate is arranged at the opening of the powder container, and only at least two sieve holes are provided on the sieve plate, wherein the nozzle is coaxially arranged with the powder container installed in the mounting seat, and the gas interface is perpendicular to the axial direction of the nozzle; the nozzle is a cone with a large inlet and a small outlet, and the nozzle outlet has a 90° bend, so that the nozzle outlet direction is consistent with the gas interface direction; the inner diameter L1 at the connection between the nozzle and the gas interface is twice or more than twice the inner diameter L2 at the gas interface outlet.

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