A safe and sanitary sprayer

Abstract

The application discloses a safe and sanitary sprayer, which comprises a shell, an installation opening and a spray opening are formed in the shell, an ampoule is arranged at the installation opening, and characterized in that the sprayer further comprises a liquid inlet needle arranged at the installation opening and a spraying assembly for spraying at the spray opening, a liquid inlet channel is formed in the liquid inlet needle, the liquid inlet needle pierces the ampoule so that one end of the liquid inlet channel is located in the ampoule, and the other end of the liquid inlet channel is connected to the spraying assembly. The cosmetic or medicament liquid is taken out in a small amount from the ampoule in a manner that the ampoule is pierced by the liquid inlet needle, direct contact of the liquid in the ampoule with air in a large area is avoided, direct contact of a hand of a user with the liquid in the ampoule is avoided, pollution of the liquid in the ampoule is effectively reduced, the service life of the liquid in the ampoule is prolonged, and the probability of allergy of the user is reduced.

Description

Technical field

[0001] The invention relates to a safe and hygienic sprayer, belonging to the field of sprayers. [Background Technology]

[0002] Some users with allergies experience allergic reactions when applying medications or cosmetics, primarily due to bacterial growth within them. One possible cause of contamination is the uneven quality of the medications or cosmetics themselves, failure to bottle them under sterile conditions, or even the addition of preservatives that can cause adverse skin reactions. Another possible cause is contact with unused cosmetics inside the container, introducing bacteria and contamination. This contamination increases with repeated openings, as bacteria also absorb oxygen and multiply. [Summary of the invention]

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a safe and hygienic sprayer.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A safe and hygienic sprayer comprises a shell having a mounting opening and a nozzle, an ampoule mounted at the mounting opening, a liquid inlet needle arranged at the mounting opening, and a spray assembly for spraying at the nozzle when the sprayer is in operation, wherein the liquid inlet needle is provided with a liquid inlet channel, the liquid inlet needle punctures the ampoule so that one end of the liquid inlet channel is located inside the ampoule, and the other end of the liquid inlet channel is connected to the spray assembly.

[0006] The beneficial effects of the present invention are:

[0007] The liquid in the ampoule is punctured by a liquid-intake needle, allowing a small amount of cosmetic or pharmaceutical liquid to be drawn from the ampoule for use. This prevents large areas of the liquid from coming into direct contact with the air and from direct human contact, effectively reducing contamination of the liquid, extending its lifespan, and lowering the risk of allergies. The liquid in the ampoule flows through the liquid inlet channel to the spray assembly, which atomizes it. This not only disperses the cosmetic or pharmaceutical more evenly on the user's skin, reducing waste, but also prevents direct human contact with the liquid in the housing, minimizing contamination.

[0008] The liquid-inlet puncture needle of the present invention is further provided with a ventilation channel, one end of which is located in the ampoule, and the other end of which is connected to the atmosphere or a pressure pump.

[0009] The spray assembly of the present invention includes an extrusion plate, the end of the ventilation channel is connected to the ampoule ventilation pipe, the end of the ventilation channel is connected to the atmosphere or the pressure pump through the ampoule ventilation pipe, and when the sprayer stops working, the extrusion plate squeezes the ampoule ventilation pipe to block the air intake in the ampoule.

[0010] The spray assembly described in the present invention includes a valve core connected to the extrusion plate, a valve seat, an atomizing air pump and a starting switch for controlling the working state of the atomizing air pump. The valve seat is provided with a liquid inlet, an air inlet and a spray port. The atomizing air pump is connected to the air inlet, the liquid inlet channel is connected to the liquid inlet, the spray port is located at the nozzle, the valve core moves at the spray port to control the opening and closing of the spray port, and controls the starting switch to make the sprayer work.

[0011] The spray assembly of the present invention further comprises a valve core spring, which pushes the valve core toward the spray port.

[0012] The spray assembly of the present invention also includes a connecting rod, one end of which abuts against the start switch, the middle of the connecting rod is rotatably mounted on the valve core, the other end of the connecting rod is provided with a rotating part, a rotating groove is opened on the valve seat, and the rotating part is rotatably arranged in the rotating groove.

[0013] The valve core of the present invention is provided with a spring pressure plate, and the two ends of the valve core spring are respectively squeezed on the spring pressure plate and the valve seat. The spray assembly includes an electromagnet electrically connected to the start switch, and the valve core is a magnet. The electromagnet is energized to make the valve core leave the spray port and squeeze the valve core spring.

[0014] The spray assembly of the present invention includes an electromagnet electrically connected to the start switch, the valve core is a magnet, and the start switch controls the movement of the valve core through the electromagnet, or the spray assembly includes a motor electrically connected to the start switch, and the motor drives the valve core to move.

[0015] The sprayer of the present invention also includes an air filter and an ampoule seat. The ampoule seat is installed in the mounting port, and the ampoule is installed at the mounting port through the ampoule seat. The air filter is installed on the ampoule seat. An air inlet and an air outlet are provided on the ampoule seat. The air inlet is connected to the inlet of the air filter, the outlet of the air filter is connected to the air outlet, and the air outlet is connected to the end of the ventilation channel located outside the ampoule. The end of the ventilation channel located outside the ampoule and the air inlet are separated by a seal.

[0016] The spray assembly of the present invention also includes a valve seat, a start switch, a control panel, an air inlet valve and a liquid inlet valve. The valve seat is provided with a liquid inlet, the liquid inlet channel is connected to the liquid inlet, the liquid inlet valve is arranged between the liquid inlet channel and the liquid inlet, and the air inlet valve is arranged between the air filter and the valve seat. The start switch, the air filter, the air inlet valve and the liquid inlet valve are all electrically connected to the control panel so that the air inlet valve is closed with a delayed time relative to the liquid inlet valve.

[0017] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Brief Description of the Drawings

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the main structure of the sprayer according to Example 1 of the present invention;

[0020] Figure 2 Schematic diagram of the cross-sectional structure of the sprayer of Example 1 of the present invention;

[0021] Figure 3 for Figure 2 Schematic diagram of the partially enlarged structure;

[0022] Figure 4 Schematic diagram of the cross-sectional structure of the liquid inlet needle of Example 1 of the present invention;

[0023] Figure 5 Schematic diagram of the cross-sectional structure of the valve seat rear body of Example 1 of the present invention;

[0024] Figure 6 Schematic diagram of the cross-sectional structure of the valve seat precursor of Example 1 of the present invention;

[0025] Figure 7 This is a perspective structural diagram of a sprayer according to Example 1 of the present invention;

[0026] Figure 8 for Figure 7 Schematic diagram of the partially enlarged structure;

[0027] Figure 9 Schematic diagram of the three-dimensional structure of the valve core of Example 1 of the present invention;

[0028] Figure 10 Schematic diagram of the cross-sectional structure of the sprayer according to embodiment 2 of the present invention;

[0029] Figure 11 This is a cross-sectional view of the assembly of the valve core and valve seat of Example 2 of the present invention;

[0030] Figure 12 for Figure 10 Schematic diagram of the partially enlarged structure Figure 1 ;

[0031] Figure 13 for Figure 10 Schematic diagram of the partially enlarged structure Figure 2 ;

[0032] Figure 14 Schematic diagram of the cross-sectional structure of the liquid inlet needle according to Example 2 of the present invention;

[0033] Figure 15 This is a partial cross-sectional structural diagram of a sprayer according to Example 3 of the present invention;

[0034] Figure 16 This is a schematic diagram of the partial cross-sectional structure of the sprayer of Example 4 of the present invention. [Specific implementation method]

[0035] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0036] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0037] Example 1:

[0038] See also Figure 1-9 This embodiment provides a safe and hygienic sprayer, comprising a housing 1, a liquid inlet needle 2, and a spray assembly. The housing 1 is provided with a mounting opening 11 and a nozzle 12. The liquid inlet needle 2 is disposed within the mounting opening 11. An ampoule A is mounted at the mounting opening 11, allowing the liquid inlet needle 2 to pierce the cap of the ampoule A. The liquid inlet needle 2 is provided with a liquid inlet channel 21. After the liquid inlet needle 2 pierces the ampoule A, one end of the liquid inlet channel 21 is located within the ampoule A, while the other end of the liquid inlet channel 21 is located outside the ampoule A and connected to the spray assembly via a liquid inlet pipe 24. When the sprayer is in operation, the spray assembly sprays at the nozzle 12.

[0039] The sprayer further includes an ampoule holder, which is mounted in the mounting opening 11. The ampoule holder is clamped by the inner wall of the housing 1. The liquid inlet needle 2 is mounted on the ampoule holder. The ampoule holder positions and supports the liquid inlet needle 2 to ensure that the liquid inlet needle 2 can accurately penetrate the ampoule A during the installation of the ampoule A. After the ampoule A is installed in the mounting opening 11, the ampoule holder supports and positions the ampoule A.

[0040] Ampoule A is filled with liquid or low-viscosity cosmetics or medications, which flow through the liquid inlet channel 21 into the spray assembly, where they are atomized and sprayed out of the nozzle 12. Liquid extraction is achieved by puncturing the ampoule A with a liquid inlet needle 2, avoiding the need to fully open the ampoule A. This effectively limits contact between the cosmetics or medication inside the ampoule A and the air, reducing bacterial growth within the ampoule A. The elongated liquid inlet channel 21 limits the liquid discharge rate, while ensuring uniform dispersion of the cosmetics or medication on the skin surface through the spray assembly, minimizing waste. Furthermore, direct contact between the liquid inside the housing 1 and the surrounding ampoule A is prevented, minimizing contamination.

[0041] Ampoule A is inverted at the mounting port 11, and the liquid in ampoule A overcomes atmospheric pressure through hydraulic pressure and flows toward the spray assembly. As the amount of liquid in ampoule A decreases, the hydraulic pressure decreases, making it increasingly difficult for the liquid in ampoule A to flow out. To address this issue, the liquid inlet needle 2 is further provided with a vent channel 22. One end of the vent channel 22 is located within ampoule A, and the other end is connected to the atmosphere or a pressure pump. As the amount of liquid in ampoule A decreases, the atmosphere or the pressure pump can replenish air inside ampoule A through the vent channel 22, maintaining a stable pressure in ampoule A and ensuring that any remaining liquid in ampoule A can flow out smoothly.

[0042] If the viscosity of the liquid stored in ampoule A is less than 3000 cp, vent channel 22 is directly connected to the atmosphere, eliminating the need for a pressure pump. If the viscosity of the liquid stored in ampoule A is greater than 3000 cp, vent channel 22 is connected to a pressure pump, which increases the air pressure in ampoule A and improves the fluidity of the liquid inlet channel 21.

[0043] In this embodiment, the spray assembly adopts a gas-liquid mixing method to atomize the cosmetics or medicines. Of course, in other embodiments, the cosmetics or medicines can also be atomized by an ultrasonic method as in the prior art.

[0044] Specifically, the spray assembly includes a control panel B43, a valve core B2, a valve seat B1, an atomizing air pump B3 and a start switch.

[0045] The atomizing air pump B3 is turned on or off by a start switch. Specifically, the start switch includes a button B41 and a start microswitch B42. Both the start microswitch B42 and the atomizing air pump B3 are electrically connected to a control board B43. Pressing the button B41 triggers the start microswitch B42, which sends a signal to the control board B43, which in turn controls the operating state of the atomizing air pump B3.

[0046] The valve seat B1 is provided with a liquid inlet B121, an air inlet B122 and a spray outlet B111, the atomizing air pump B3 is connected to the air inlet B122 through the air inlet pipe 25, the liquid inlet channel 21 is connected to the liquid inlet B121 through the liquid inlet pipe 24, and the spray outlet B111 is located at the spray opening 12.

[0047] The atomizing air pump B3 and the air inlet B122 maintain a constant open state, the atomizing air pump B3 provides a pressurized air flow to the inside of the valve seat B1 when it is turned on, and the liquid inlet channel 21 provides a liquid of a cosmetic or a medicine to the inside of the valve seat B1 when it is communicated with the liquid inlet B121. If the pressurized air flow and the liquid are mixed, a spray is formed, and as long as the spray outlet B111 is in an open state, the atomized cosmetic or the atomized medicine can be sprayed out at the spray opening 12.

[0048] The valve core B2 can move at the spray outlet B111 to control the opening and closing of the spray outlet B111, and if the valve core B2 blocks the spray outlet B111, the spray outlet B111 is closed, and if the valve core B2 leaves the spray outlet B111, the spray outlet B111 is opened. In other embodiments, the movement control of the valve core B2 can be independent of the starting switch. However, in this embodiment, in order to simplify the operation steps of the sprayer, the valve core B2 can move at the spray outlet B111 under the control of the starting switch.

[0049] The starting switch is turned on, the liquid inlet channel 21 and the liquid inlet B121 are communicated, and there is enough pressure in the ampoule A to make the liquid flow into the valve seat B1, the atomizing air pump B3 is turned on, the gas-liquid mixing occurs in the valve seat B1, the spray outlet B111 is opened, and thus the spraying is carried out at the spray outlet B111, and the sprayer can work normally. The starting switch is turned off, the atomizing air pump B3 is turned off and the spray outlet B111 is closed, so that the sprayer can stop working.

[0050] In this embodiment, the valve core B2 is a needle-shaped valve core, the valve seat B1 includes a valve seat front body B11 and a valve seat rear body B12 connected to each other, the liquid inlet B121 and the air inlet B122 are located on the valve seat rear body B12, the spray outlet B111 is located on the valve seat front body B11, and the air inlet B122 is closer to the spray outlet B111 than the liquid inlet B121.

[0051] Spray port B111 includes an annular air jet B1111 and a liquid jet B1112 located at the center of air jet B1111. Liquid jet B1112 is a circular hole. The valve seat front body B11 and valve seat rear body B12 are spliced ​​together to form a gas flow channel and a liquid flow channel within valve seat B1. The gas flow channel and the liquid flow channel are separated and disconnected within valve seat B1. The liquid inlet B121 is connected to the liquid jet B1112 via the liquid flow channel, and the air inlet B122 is connected to the air jet B1111 via the gas flow channel. The end of the valve core B2 blocks the liquid jet B1112 to close the spray port B111. When the end of the valve core B2 moves away from the liquid jet B1112, the spray port B111 is opened. Gas and liquid converge to form a spray only at spray port B111, preventing premature spray formation inside valve seat B1. This allows the spray to be ejected from spray port B111 and then reach the outside of nozzle 12 without adhering to the inner wall of valve seat B1, thus avoiding wasted spray. This also prevents liquid from liquid inlet B121 from flowing into air inlet B122, and prevents gas from air inlet B122 from flowing into liquid inlet B121.

[0052] The valve core B2 is located on the valve seat B1, which guides the movement of the valve core B2. In this embodiment, the starting switch is a normally open switch. To this end, the spray assembly also includes a valve core spring B6, which pushes the valve core B2 toward the spray port B111. By closing the starting switch, the valve core B2 is forced to leave the spray port B1112 and press against the valve core spring B6. Specifically, in this embodiment, the spray assembly also includes a transition piece B5. The end of the valve core B2 is fixed to the transition piece B5 so that the transition piece B5 avoids the valve seat B1. The inner wall of the housing 1 is provided with a spring rib B61, and the two ends of the valve core spring B6 respectively press against the transition piece B5 and the spring rib B61.

[0053] In this embodiment, the activation switch controls the movement of valve core B2 through mechanical transmission between button B41 and valve core B2. The spray assembly also includes a connecting rod B8, the lower end of which abuts button B41. A transition member B5 is provided with a rotating shaft B51, and the middle portion of connecting rod B8 is rotatably mounted on valve core B2 via rotating shaft B51. A rotating member B1231 is provided at the upper end of connecting rod B8, and a rotating groove B123 is defined on the rear body B12 of the valve seat. Rotating member B1231 is rotatably mounted within rotating groove B123. Because valve seat B1 is fixed relative to housing 1, pressing button B41 causes the lower end of connecting rod B8 to rotate, causing the upper end of connecting rod B8 to abut within rotating groove B123 and rotate. This, through connecting rod B8, drives the end of valve core B2 away from spray port B1112 and compresses valve core spring B6. Release the button B41, and the end of the valve core B2 blocks the liquid injection port B1112 again under the reset push of the valve core spring B6. The valve core B2 pulls the middle of the connecting rod B8 to move, thereby driving the lower end of the connecting rod B8 and the button B41 to reset.

[0054] After the sprayer stops working, the atomizing air pump B3 also stops working. To prevent the liquid in ampoule A from continuing to flow into the valve seat B1, which could cause excessive liquid to accumulate and cause corrosion, the spray assembly also includes a squeeze plate B7. Squeeze plate B7 is fixed to the transition piece B5, thereby connecting the squeeze plate B7 to the valve core B2 and enabling the valve core B2 and squeeze plate B7 to move synchronously. The end of the vent channel 22 located outside the ampoule A is connected to an ampoule vent pipe 23, which connects the vent channel 22 to the atmosphere or a pressure pump. As the spray port B111 gradually closes, squeeze plate B7 moves with the valve core B2 to squeeze the ampoule vent pipe 23, blocking air intake into the ampoule A. This, in turn, inhibits the supply of liquid from the ampoule A to the valve seat B1 after the sprayer stops working. The valve seat rear body B12 also includes a through hole B124 for the ampoule vent pipe 23 to pass through.

[0055] In this embodiment, the button B41 uses a mechanical transmission method of the connecting rod B8 to control the movement of the valve core B2, which has a simple structure, low cost, low failure rate, and longer service life of the sprayer. At the same time, a single operation of the button B41 can realize the control of the working state of the sprayer, which is very convenient for the user.

[0056] This embodiment uses an atomizing air pump B3 to atomize the liquid, effectively reducing molecular damage to the active ingredients in the liquid and lowering the overall manufacturing cost of the sprayer. The gas and liquid are confined within the valve seat B1, effectively minimizing damage to the inner wall of the housing 1. Only the valve seat B1 and valve core B2 require regular replacement, effectively reducing maintenance costs.

[0057] Example 2:

[0058] See also Figure 10-14 The first difference between this embodiment and embodiment 1 is that the sprayer further includes an air filter B9.

[0059] Ampoule holder B91 is mounted within mounting opening 11, securing it to the inner wall of mounting opening 11. Ampoule A is mounted in mounting opening 11 via ampoule holder B91, which supports ampoule A. Liquid-injection needle 2 passes through ampoule holder B91, which positions it to ensure it punctures ampoule A and minimizes movement of ampoule A within mounting opening 11, preventing leakage.

[0060] The air filter B9 is installed on the vial seat B91 away from the side wall of the vial A, and the air inlet B911 and the air outlet B912 are formed on the vial seat B91. The air inlet B911 is communicated to the inlet of the air filter B9, and the outlet of the air filter B9 is communicated to the air outlet B912. There is a gap between the edge of the mounting port 11 and the vial A, and air can flow into the air inlet B911 through the gap, and then flow into the air filter B9, and the air after sterilization through the air filter B9 flows out from the air outlet B912. There is a gap between the cover of the vial A and the vial seat B91, and the shape of the liquid inlet needle 2 in this embodiment is slightly changed compared with that in embodiment 1, so that the end of the air passage 22 outside the vial A is located in the gap between the cover of the vial A and the vial seat B91, and the air outlet B912 is communicated to the air passage 22, and the air after sterilization can be sent into the vial A through the air passage 22, so as to avoid the contamination of the cosmetics or drugs in the vial A.

[0061] Since the air passage 22 in this embodiment is communicated to the atmosphere through the air filter B9, the pressing plate and the vial breather tube in embodiment 1 are cancelled in this embodiment.

[0062] In addition, the end of the air passage 22 outside the vial A and the air inlet B911 are separated by the sealing piece B913, so as to avoid that the air not sterilized directly enters the vial A from the mounting port 11 at the edge of the mounting port 11.

[0063] The second difference between this embodiment and embodiment 1 is that the spray assembly includes an electromagnet B10 electrically connected to the control board B43. Since the starting micro switch B42 is electrically connected to the control board B43, the control board B43 can control the on-off of the electromagnet B10 according to the triggering state of the starting micro switch B42.

[0064] Electromagnet B10 is fixed to the inner wall of the housing, and valve core B2 is a magnet. The connecting rod is eliminated, and button B41 and start micro switch B42 are relatively close. Pressing button B41 directly presses and triggers start micro switch B42, which sends a signal to control board B43. Control board B43 controls atomizing air pump B3 and electromagnet B10 to be energized simultaneously. While atomizing air pump B3 supplies air to valve seat B1, electromagnet B10 gradually magnetically attracts valve core B2, causing spray port B111 to gradually open, thereby spraying. In this embodiment, button B41 is a soft rubber button. After releasing button B41, button B41 resets under its own elasticity and separates from start micro switch B42. Control board B43 controls atomizing air pump B3 to stop working and stops supplying power to electromagnet B10. Electromagnet B10 loses its magnetism, and valve core B2, under the action of valve core spring B6, blocks spray port B111 again. The shape of the electromagnet B10 matches the shape of the valve core B2, so that the electromagnet B10 also plays a guiding role in the movement of the valve core B2.

[0065] In order to increase the restoring force of the button B41, in other embodiments, a spring may be further provided between the inner wall of the housing and the button B41.

[0066] The third difference between this embodiment and Example 1 is that the valve core spring B6 is located within the valve seat B1. The valve core spring B6 is mounted on the valve core B2, which is provided with a spring pressure plate B21. The two ends of the valve core spring B6 are pressed against the spring pressure plate B21 and the valve seat B1, respectively. The valve seat B1 cannot move within the housing. Therefore, when the valve core B2 is moved by the magnetic attraction of the electromagnet B10, it squeezes the valve core spring B6 through the spring pressure plate B21. When the electromagnet B10 is de-energized, the valve core spring B6 can be reset and push the valve core B2 toward the spray port B111 through the spring pressure plate B21. Because the button B41 does not need to drive other mechanical components to move the valve core B2, the force required to press the button B41 is smaller, making the user's operation more labor-saving.

[0067] The valve core spring B6 and the spring pressure plate B21 prevent the valve core B2 from being separated from the valve seat B1, so that the valve core B2 and the valve seat B1 can be disassembled and assembled as a whole.

[0068] Example 3:

[0069] See also Figure 15The difference between the embodiment and the embodiment 2 is that the spray assembly retains the valve seat B1 and omits the electromagnet and the valve core, so that the spray port B111 remains in the open state. The spray assembly of the embodiment further comprises an air inlet valve B14 connected between the valve seat B1 and the air filter B9 and a liquid inlet valve B13 connected between the liquid inlet channel and the liquid inlet port. The microswitch B42, the air filter B9, the atomizing air pump B3, the air inlet valve B14 and the liquid inlet valve B13 are electrically connected to the control panel, so that the air filter B9 and the air inlet valve B14 are closed later than the liquid inlet valve B13. The outlet of the air filter B9 is further connected to the liquid flow channel. After the atomizing air pump B3 and the liquid inlet valve B13 are closed, the air filter B9 and the air inlet valve B14 have not been closed yet, and the air filter B9 can continue to introduce sterile air into the liquid flow channel for a period of time, thereby purging the liquid remaining in the liquid flow channel and reducing the corrosion of the valve seat B1. Then, the control panel controls the air inlet valve B14 and the air filter B9 to be closed again.

[0070] Embodiment 4:

[0071] Referring to Figure 16 The difference between the embodiment and the embodiment 1 is that the connecting rod is omitted. The spray assembly of the embodiment comprises a motor B62, and the inner wall of the shell is provided with a motor seat B621, and the motor B62 is installed on the motor seat B621. The valve core B2 and the motor shaft can be connected by threads, and the valve core B2 is positioned in the circumferential direction and the radial direction by cooperating with the valve seat B1, so as to drive the valve core B2 to move axially during the rotation of the motor shaft. The number of start switches can be two, and the start microswitches of the two start switches are electrically connected to the control panel. One of the two keys is pressed to directly press and trigger the corresponding start microswitch, so as to send a corresponding signal to the control panel, and the control panel controls the motor shaft to rotate forward or reverse, so as to control the forward movement or backward movement of the valve core B2. The keys of the embodiment are soft rubber keys, and the user controls more labor-saving. At the same time, by using the thread self-locking force between the valve core B2 and the motor shaft, the valve core can be stopped at any position on the valve seat B1.

[0072] Figure 16 The middle air bottle vent pipe 23 is in a squeezed state.

[0073] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited to this. Those skilled in the art should understand that the present application includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification without deviating from the functional and structural principles of the present application will be included in the scope of the claims.

Claims

1. A safe and sanitary sprayer, comprising a housing and a transition piece, wherein the housing is provided with a mounting port and a nozzle, and the ampoule is mounted at the mounting port, characterized in that: The sprayer also includes a liquid inlet needle arranged at the mounting port and a spray assembly for spraying at the nozzle when the sprayer is working. The liquid inlet needle is provided with a liquid inlet channel. The liquid inlet needle punctures the ampoule so that one end of the liquid inlet channel is located in the ampoule, and the other end of the liquid inlet channel is connected to the spray assembly; the liquid inlet needle is also provided with a ventilation channel, and the spray assembly includes a valve core connected to the extrusion plate, a valve seat, a valve core spring, an atomizing air pump, and a start switch for controlling the working state of the atomizing air pump. The end of the ventilation channel is connected to an ampoule ventilation pipe, one end of the ventilation channel is located in the ampoule, and the other end of the ventilation channel is connected to the atmosphere or the pressure pump through the ampoule ventilation pipe. When the sprayer stops working, the extrusion plate squeezes the ampoule ventilation pipe to block the air intake in the ampoule. The extrusion plate is fixed to the transition piece, so that the valve core and the extrusion plate move synchronously; a through hole for the ampoule vent pipe to pass through is also opened on the rear body of the valve seat, and a liquid inlet, an air inlet and a spray port are provided on the valve seat. The atomizing air pump is connected to the air inlet, the liquid inlet channel is connected to the liquid inlet, and the spray port is located at the nozzle. The valve core moves at the spray port to control the opening and closing of the spray port, and controls the start switch to make the sprayer work; The valve core is located on the valve seat, and the valve seat can guide the movement direction of the valve core. The starting switch is a normally open switch. The valve core spring pushes the valve core toward the spray port. By closing the starting switch, the valve core is forced to leave the spray port and be squeezed on the valve core spring. The end of the valve core is fixed on the transition piece so that the transition piece avoids the valve seat. The inner wall of the shell is provided with a spring rib, and the two ends of the valve core spring are respectively pressed against the transition piece and the spring rib; when the spray port is gradually closed, the extrusion plate moves with the valve core to squeeze the ampoule vent pipe to block the air intake in the ampoule.

2. The safe and sanitary sprayer according to claim 1, characterized in that: The spray assembly also includes a connecting rod, one end of the connecting rod abuts against the start switch, the middle of the connecting rod is rotatably mounted on the valve core, the other end of the connecting rod is provided with a rotating member, a rotating groove is opened on the valve seat, and the rotating member is rotatably arranged in the rotating groove.

3. The safe and sanitary sprayer according to claim 1, characterized in that: The valve core is provided with a spring pressure plate, and the two ends of the valve core spring are respectively squeezed on the spring pressure plate and the valve seat. The spray assembly includes an electromagnet electrically connected to the start switch. The valve core is a magnet. When the electromagnet is energized, the valve core leaves the spray port and squeezes the valve core spring.

4. The safe and sanitary sprayer according to claim 1, characterized in that: The spray assembly includes an electromagnet electrically connected to the start switch, the valve core is a magnet, and the start switch controls the movement of the valve core through the electromagnet, or the spray assembly includes a motor electrically connected to the start switch, and the motor drives the valve core to move.

5. The safe and sanitary sprayer according to claim 1, characterized in that: The sprayer also includes an air filter and an ampoule seat. The ampoule seat is installed in the mounting port, and the ampoule is installed at the mounting port through the ampoule seat. The air filter is installed on the ampoule seat. An air inlet and an air outlet are provided on the ampoule seat. The air inlet is connected to the inlet of the air filter, the outlet of the air filter is connected to the air outlet, and the air outlet is connected to the end of the ventilation channel outside the ampoule. The end of the ventilation channel outside the ampoule and the air inlet are separated by a seal.

6. The safe and sanitary sprayer according to claim 5, characterized in that: The spray assembly also includes a control panel, an air inlet valve and a liquid inlet valve. The liquid inlet valve is arranged between the liquid inlet channel and the liquid inlet, and the air inlet valve is arranged between the air filter and the valve seat. The start switch, the air filter, the air inlet valve and the liquid inlet valve are all electrically connected to the control panel so that the air inlet valve is closed with a delayed time relative to the liquid inlet valve.

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