Rotating arm-type liquid spraying device

Abstract

Provided is a rotating arm-type liquid spraying device, relating to the technical field of spraying devices, and comprising: a pump head base; a pump core mechanism, the pump core mechanism being arranged on the pump head base, and the pump core mechanism drawing a medicament in a liquid storage bottle by means of a liquid suction end and outputting the medicament from a liquid outlet end; a spray starting head, the spray starting head comprising a spray starting head main body for a user to press and a spray starting flow channel formed in the spray starting head main body; a liquid spraying rotating arm, the liquid spraying rotating arm comprising a rotating arm body, a liquid spraying flow channel formed in the rotating arm body, and a blocking member, wherein the blocking member is arranged on one side of the liquid spraying flow channel proximal to the spray starting flow channel; and a nozzle, the nozzle being arranged at an overhanging liquid spraying end, the nozzle being provided with a liquid spraying hole capable of adjusting the liquid spraying state, and the liquid spraying hole being in communication with the liquid spraying flow channel. By means of the rotation of the liquid spraying rotating arm relative to the spray starting head, the blocking and opening functions of the spray starting flow channel can be achieved, so that a good antibacterial effect is achieved, and in addition, the residual medicament in the liquid spraying flow channel can be reduced, which facilitates reduction of the number of spray starting times during the next use.

Description

Rotary arm type liquid spraying device Technical Field

[0001] This invention relates to the field of spraying device technology, and in particular to a rotary arm type liquid spraying device. Background Technology

[0002] Nasal spray bottles are commonly used products. For example, nasal sprays use pressure-driven atomization to deliver medication into the nasal cavity in a mist form, thereby treating diseases or relieving symptoms. In medicine, nasal sprays are widely used for treating nasal diseases, allergic rhinitis, and post-nasal surgery care. In daily life, nasal sprays also have various applications, such as cleaning the nasal cavity, moisturizing, and improving sleep quality. We can choose the appropriate nasal spray product according to our actual needs and use it correctly to achieve the desired effect.

[0003] Currently, Japan has higher functional requirements for rotary arm nozzles for spray bottles. However, existing rotary arm nozzles on the market typically use interference-fit rotating arms and open-type liquid outlet channels. This leads to problems such as the rotating arm swinging arbitrarily after repeated use, leakage from the outlet, excessive spraying frequency, uneven atomization, and insufficient rinsing power. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a rotating arm type spraying device, which can realize the blocking and opening function of the spraying channel by rotating the spraying arm relative to the spraying head, thereby playing a good antibacterial role, reducing the amount of residual agent in the spraying channel, making it easier to reduce the number of spraying times in the next use, and also making it easy for users to use and store.

[0005] To solve the above-mentioned technical problems, the present invention provides a rotary arm type liquid spraying device, comprising:

[0006] Pump head seat, used to seal the opening of a liquid storage bottle;

[0007] The pump core mechanism is located on the pump head seat. The pump core mechanism has a suction end and a discharge end. The pump core mechanism draws the medicine in the storage bottle through the suction end and outputs the medicine from the discharge end.

[0008] The nozzle includes a nozzle body for the user to press and a spray channel formed in the nozzle body. The nozzle body is located in the pump core mechanism and the spray channel is connected to the liquid outlet.

[0009] The spraying rotating arm includes a rotating arm body, a spraying channel formed in the rotating arm body, and a blocking member. The two ends of the rotating arm body along its own extension direction are a rotating connection end and a suspended spraying end, respectively. The rotating connection end is rotatably disposed on the nozzle body so that the spraying channel is connected to the spraying channel. The blocking member is disposed on the side of the spraying channel close to the spraying channel.

[0010] The nozzle is located at the suspended spray end and has an adjustable spray orifice that is connected to the spray channel.

[0011] When the rotating arm body rotates to the first preset position relative to the nozzle body, the blocking member blocks the nozzle flow channel, and the nozzle flow channel is not connected to the liquid spray channel;

[0012] When the rotating arm body rotates to the second preset position relative to the nozzle body, the blocking component does not block the spray channel, and the spray channel is connected to the liquid spray channel.

[0013] Furthermore, the spraying rotating arm also includes a water core, which is a long tube and is inserted into both the spraying channel and the nozzle.

[0014] Furthermore, the required rotation angle from the first preset position to the second preset position is not less than 90 degrees.

[0015] Furthermore, the pump core mechanism includes a pump valve assembly and a piston assembly. The pump valve assembly includes a tubular cavity valve body and a valve ball disposed within the cavity valve body. The cavity valve body has a hollow cavity extending along its own axis. One end of the cavity valve body is disposed on the pump head seat, and the other end of the cavity valve body constitutes the liquid suction end. The piston assembly is disposed within the cavity valve body, and a portion of the piston assembly constitutes the liquid discharge end.

[0016] Furthermore, the piston assembly includes a main column, a main piston, and a secondary piston. The main column has a liquid outlet channel, one end of which forms the liquid outlet end and is connected to the nozzle body. The main column has a limiting protrusion that cooperates with the pump head seat stop. The main piston is reciprocally slidably disposed in the cavity valve body to form a liquid storage chamber with variable volume. A first elastic reset member is provided between the main piston and the limiting protrusion. The secondary piston includes a secondary piston rod and a secondary piston head connected to each other. The secondary piston rod is slidably disposed in the liquid outlet channel of the main column. A second elastic reset member is provided between the secondary piston head and the cavity valve body, and the secondary piston head can be liquid-tightly abutted against the main piston under the action of the second elastic reset member.

[0017] Furthermore, the cavity valve body is provided with an air supply hole, and the inner wall of the cavity valve body is provided with an air supply protrusion. The air supply protrusion is located near the air supply hole, and the air supply hole is connected to the outside atmosphere through the gap between the main column and the pump head seat when the main piston slides past the air supply protrusion.

[0018] Furthermore, the inner wall of the spray channel is provided with an elongated groove; the blocking component includes an insertion tube, a stop plate at one end of the insertion tube, a blocking protrusion on the end face of the stop plate, and a locking strip that engages with the elongated groove, the blocking protrusion being used to block the spray channel.

[0019] Furthermore, the main body of the nozzle is provided with a first tube, and the outer peripheral wall of the first tube is provided with a plurality of first positioning protrusions. The main body of the rotating arm is provided with a second tube that rotates with the first tube, and the inner peripheral wall of the second tube is provided with a second positioning protrusion. The second positioning protrusion and the first positioning protrusion are positioned together.

[0020] Furthermore, the main body of the spray head is provided with a positioning slot, and the main body of the rotating arm is provided with a retaining plate that engages with the positioning slot; when the main body of the rotating arm rotates relative to the main body of the spray head to a first preset position, the positioning slot and the retaining plate are positioned and engaged.

[0021] Furthermore, the rotary arm spraying device also includes a dust cap, which is detachably mounted on the nozzle.

[0022] As described above, the rotary arm spraying device of the present invention has the following beneficial effects: The main innovation of the present invention lies in the arrangement of the spraying rotary arm, that is, the spraying channel is closed by rotating the spraying rotary arm. Specifically, the spraying rotary arm includes a rotary arm body, a spraying channel formed in the rotary arm body, and a blocking member. The two ends of the rotary arm body along its own extension direction are a rotating connection end and a suspended spraying end, respectively. The rotating connection end is rotatably disposed on the spraying head body so that the spraying channel is connected to the spraying channel. The blocking member is disposed on the side of the spraying channel close to the spraying channel. When the user does not need to spray the agent, the rotary arm body is rotated relative to the spraying head body to a first preset position, and the blocking member blocks the spraying channel, so the spraying channel is not connected to the spraying channel. When the user needs to spray the agent again, the rotary arm body is rotated relative to the spraying head body to a second preset position, and the blocking member does not block the spraying channel, so the spraying channel is connected to the spraying channel. The user can spray the agent from the spray hole of the nozzle by pressing the spraying head. The blocking component rotates synchronously with the rotating arm body. For example, when the rotating arm body rotates 90 degrees relative to the nozzle body, the blocking component rotates 90 degrees relative to the nozzle body. The rotational engagement between the spraying rotating arm and the nozzle enables the blocking and opening of the spray channel, reducing the amount of residual agent in the spray channel and facilitating fewer spraying cycles for the next use. Attached Figure Description

[0023] Figure 1 shows a front view of the rotary arm spray device in use;

[0024] Figure 2 shows a cross-sectional view of the rotary arm spray device in use;

[0025] Figure 3 shows the first state diagram of the rotary arm type liquid spraying device;

[0026] Figure 4 shows the second state diagram of the rotary arm type liquid spraying device;

[0027] Figure 5 shows a cross-sectional view of the rotary arm type liquid spraying device shown in Figure 4;

[0028] Figure 6 shows a three-dimensional view of the spraying rotating arm;

[0029] Figure 7 shows a cross-sectional view of the spraying rotating arm;

[0030] Figure 8 shows a perspective view of the blocking component;

[0031] Figure 9 shows a three-dimensional view of the nozzle;

[0032] Figure 10 shows a front view of the pump core mechanism;

[0033] Figure 11 shows a cross-sectional view of the pump core mechanism.

[0034] Component Labeling Explanation: 1. Pump Head Seat; 2. Pump Core Mechanism; 21. Pump Valve Assembly; 211. Valve Body; 211a. Suction End; 212. Valve Ball; 213. Air Injection Hole; 214. Air Injection Protrusion; 22. Piston Assembly; 221. Main Column; 221a. Liquid Outlet End; 221b. Limiting Protrusion; 222. Main Piston; 222a. Liquid Storage Chamber; 223. Secondary Piston; 223a. Secondary Piston Rod; 223b. Secondary Piston Head; 224. First Elastic Reset Member; 225. Second Elastic Reset Member; 3. Nozzle Starter; 31. Nozzle Starter Body; 32. Nozzle Starter Flow Channel; 33. First Tube Section; 34. First Positioning Protrusion; 35. Positioning Slot; 4. Spray Rotating Arm; 41. Rotating Arm Body; 411. Rotating Connection End; 412. Suspended Spray End; 42. Spray Flow Channel; 43. Blocking Member; 431. Insertion Tube Section; 432. Stop Plate; 433. Sealing Protrusion; 434.44. Locking strip; 45. Water core; 46. Long groove; 47. Second tube section; 48. Second positioning protrusion; 59. Holding plate; 50. Nozzle; 51. Spray hole; 6. Dust cap; 7. Storage bottle. Detailed Implementation

[0035] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0036] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0037] As shown in Figures 1, 2, 3, 4, and 5, the present invention provides a rotary arm type liquid spraying device, comprising:

[0038] Pump head seat 1, which is used to seal the mouth of a liquid storage bottle 7;

[0039] Pump core mechanism 2 is provided on pump head seat 1. Pump core mechanism 2 has a liquid suction end 211a and a liquid discharge end 221a. Pump core mechanism 2 draws the medicine in the storage bottle 7 through the liquid suction end 211a and outputs the medicine from the liquid discharge end 221a.

[0040] The nozzle 3 includes a nozzle body 31 for the user to press and a nozzle flow channel 32 formed in the nozzle body 31. The nozzle body 31 is disposed on the pump core mechanism 2, and the nozzle flow channel 32 is connected to the liquid outlet end 221a.

[0041] The spraying rotating arm 4 includes a rotating arm body 41, a spraying channel 42 formed in the rotating arm body 41, and a blocking member 43. The two ends of the rotating arm body 41 along its own extension direction are a rotating connection end 411 and a suspended spraying end 412, respectively. The rotating connection end 411 is rotatably disposed on the nozzle body 31 so that the spraying channel 42 is connected to the spraying channel 32. The blocking member 43 is disposed on the side of the spraying channel 42 close to the spraying channel 32.

[0042] Nozzle 5 is provided at the suspended spray end 412. Nozzle 5 has an adjustable spray hole 51, which is connected to the spray channel 42.

[0043] When the rotating arm body 41 rotates relative to the nozzle body 31 to the first preset position, the blocking member 43 blocks the nozzle flow channel 32, and the nozzle flow channel 32 is not connected to the liquid spraying channel 42;

[0044] When the rotating arm body 41 rotates relative to the nozzle body 31 to the second preset position, the blocking member 43 does not block the spray channel 32, and the spray channel 32 is connected to the liquid spray channel 42.

[0045] In this invention, the storage bottle 7 is used to store medications, such as nasal sprays. When the pump head seat 1 is sealed and installed at the mouth of the storage bottle 7, the inner cavity of the storage bottle 7 is in a closed state. The pump core mechanism 2 is disposed on the pump head seat 1, and the pump core mechanism 2 has a suction end 211a and a discharge end 221a; when the user applies force to the pump core mechanism 2 through the spray nozzle 3, the pump core mechanism 2 is triggered, and the pump core mechanism 2 draws the medication in the storage bottle 7 through the suction end 211a (the suction end 211a can be connected to a straw) and outputs the medication from the discharge end 221a. The spray head 3 includes a spray head body 31 for the user to press and a spray channel 32 formed in the spray head body 31. The spray head body 31 is located on the pump core mechanism 2, and the spray channel 32 is connected to the liquid outlet end 221a. With this configuration, when the user presses the spray head body 31 with their finger, the spray head body 31 moves downward a certain distance relative to the pump head seat 1, and the pump core mechanism 2 performs a spraying action. The medicine in the storage bottle 7 flows sequentially through the liquid inlet 211a, the liquid outlet 221a, the spray channel 32, the spray channel 42, and the spray hole 51.

[0046] The main innovation of this invention lies in the arrangement of the spraying rotating arm 4, namely, the closure of the spraying channel 32 is achieved by rotating the spraying rotating arm 4. Specifically, the spraying rotating arm 4 includes a rotating arm body 41, a spraying channel 42 formed in the rotating arm body 41, and a blocking member 43. The two ends of the rotating arm body 41 along its extension direction are a rotating connection end 411 and a suspended spraying end 412, respectively. The rotating connection end 411 is rotatably disposed on the spraying head body 31 so that the spraying channel 42 is connected to the spraying channel 32. The blocking member 43 is disposed on the side of the spraying channel 42 near the spraying channel 32. When the user does not need to spray the agent, the rotating arm body 41 is closed. The rotating arm body 41 rotates relative to the nozzle body 31 to a first preset position, and the blocking member 43 blocks the spray channel 32, so the spray channel 32 is not connected to the liquid spray channel 42. When the user needs to spray the agent again, the rotating arm body 41 is rotated relative to the nozzle body 31 to a second preset position, and the blocking member 43 does not block the spray channel 32, so the spray channel 32 is connected to the liquid spray channel 42. The user can then spray the agent from the liquid spray hole 51 of the nozzle 5 by pressing the nozzle 3. The blocking member 43 rotates synchronously with the rotating arm body 41. For example, when the rotating arm body 41 rotates 90 degrees relative to the nozzle body 31, the blocking member 43 rotates 90 degrees relative to the nozzle body 31. The rotational engagement between the spraying rotating arm 4 and the spray head 3 enables the blocking and opening of the spraying channel 32, which reduces the amount of residual agent in the spraying channel 42 and makes it easier to reduce the number of spraying times in the next use (the number of spraying times refers to the number of times the rotating arm spraying device can spray the agent normally from the start under specified conditions).

[0047] As a working process of a rotary arm type liquid spraying device:

[0048] S1, rotate the rotating arm body 41 relative to the nozzle body 31 to the second preset position, and the required rotation angle from the first preset position to the second preset position is not less than 90 degrees;

[0049] S2, press to activate nozzle 3;

[0050] S3, the pump core mechanism 2 draws the medicine in the storage bottle 7 through the suction end 211a and outputs the medicine from the outlet end 221a, and finally sprays it out from the nozzle 5;

[0051] S4. After use, rotate the rotating arm body 41 relative to the nozzle body 31 to the first preset position (i.e. the starting position), and the blocking member 43 blocks the spray channel 32 to prevent the agent in the spray channel 32 from flowing in and remaining in the spray channel 42.

[0052] Therefore, the rotating arm type spraying device of the present invention can realize the blocking and opening function of the spraying channel 32 by rotating the spraying rotating arm 4 relative to the spraying head 3, which plays a good antibacterial role and can reduce the residual agent in the spraying channel 42, making it easier to reduce the number of spraying times in the next use. In addition, it is convenient for users to use and store.

[0053] Furthermore, as shown in Figure 5, in order to increase the spray pressure of the agent, the spray rotating arm 4 also includes a water core 44. The water core 44 is in the shape of a long tube and is inserted into both the spray channel 42 and the nozzle 5. Specifically, there are multiple water cores 44, and different water cores 44 have lumens of different diameters. Users can insert one water core 44 into both the spray channel 42 and the nozzle 5 according to their needs.

[0054] Furthermore, as shown in Figures 3 and 4, the required rotation angle from the first preset position to the second preset position is not less than 90 degrees. For example, the required rotation angle from the first preset position to the second preset position is 90 degrees to 270 degrees, and the user can adjust the spray angle of the nozzle 5 according to their own usage habits.

[0055] Furthermore, as shown in Figures 10 and 11, to achieve the spraying action, the pump core mechanism 2 includes a pump valve assembly 21 and a piston assembly 22. The pump valve assembly 21 includes a tubular cavity valve body 211 and a valve ball 212 disposed within the cavity valve body 211. The cavity valve body 211 has a hollow cavity extending along its own axis. One end of the cavity valve body 211 is disposed on the pump head seat 1, and the other end of the cavity valve body 211 constitutes the liquid suction end 211a. The piston assembly 22 is disposed within the cavity valve body 211, and a portion of the piston assembly 22 constitutes the liquid discharge end 221a. Specifically, the nozzle body 31 of the nozzle 3 is disposed on the liquid discharge end 221a, and the nozzle body 31 and the liquid discharge end 221a move synchronously up and down.

[0056] Furthermore, the piston assembly 22 includes a main column 221, a main piston 222, and a secondary piston 223. The main column 221 has a liquid outlet channel, and one end of the main column 221 forms the liquid outlet end 221a and is connected to the nozzle body 31. The main column 221 has a limiting protrusion 221b that cooperates with the stop of the pump head seat 1. The main piston 222 is reciprocally slidably disposed in the cavity valve body 211 to form a liquid storage chamber 222a with variable volume. The main piston 222 and the limiting protrusion... A first elastic reset element 224 (e.g., a spring) is provided between 221b; the auxiliary piston 223 includes an auxiliary piston rod 223a and an auxiliary piston head 223b connected to each other. The auxiliary piston rod 223a is slidably inserted into the liquid outlet channel of the main column 221. A second elastic reset element 225 (e.g., a spring) is provided between the auxiliary piston head 223b and the cavity valve body 211, and the auxiliary piston head 223b can be liquid-tightly abutted against the main piston 222 under the action of the second elastic reset element 225. When the user presses the nozzle 3, the main column 221 moves downward, and the main column 221 pushes the main piston 222 downward, and the internal pressure of the liquid storage chamber 222a gradually increases. When the internal pressure of the storage chamber 222a increases above the preset limit value, the auxiliary piston 223 overcomes the elastic resistance of the second elastic reset member 225, and moves a small distance downward relative to the main piston 222 (i.e., the auxiliary piston 223 and the main piston 222 are no longer in a liquid-tight fit). The agent in the storage chamber 222a quickly flows into the outlet channel of the main column 221, and then flows out from the outlet end 221a. When the internal pressure of the storage chamber 222a decreases below the preset limit value, the auxiliary piston 223 resets, and a liquid-tight fit is achieved again between it and the main piston 222.

[0057] Furthermore, the valve body 211 is provided with a gas replenishment hole 213, and the inner wall of the valve body 211 is provided with a gas replenishment protrusion 214. The gas replenishment protrusion 214 is located near the gas replenishment hole 213. When the main piston 222 slides past the gas replenishment protrusion 214, the gas replenishment hole 213 is connected to the outside atmosphere through the gap between the main column 221 and the pump head seat 1. Specifically, when the main piston 222 moves downward relative to the valve body 211 to the lowest limit position, the upper end of the main piston 222 slides and abuts against the gas replenishment protrusion 214. At this time, the gas replenishment hole 213 is connected to the outside atmosphere through the gap between the main column 221 and the pump head seat 1, thereby completing the gas replenishment action of the liquid storage bottle 7.

[0058] Furthermore, as shown in Figures 6, 7, and 8, to facilitate convenient assembly between the rotating arm body 41 and the blocking member 43, an elongated groove 45 is provided on the inner wall of the spray channel 42. The blocking member 43 includes an insertion tube 431, a stop plate 432 located at one end of the insertion tube 431, a sealing protrusion 433 located on the end face of the stop plate 432, and a retaining strip 434 that engages with the elongated groove 45. The sealing protrusion 433 is used to block the spray channel 32. When the rotating arm body 41 rotates relative to the spray head body 31 to a first preset position, the sealing protrusion 433 aligns with the spray channel 32 and blocks the spray channel 32. When the rotating arm body 41 rotates relative to the nozzle body 31 to the second preset position, the blocking protrusion 433 is misaligned in the nozzle flow channel 32, the nozzle flow channel 32 is connected to the cavity of the insertion tube 431, and the cavity of the insertion tube 431 is connected to the cavity of the water core 44.

[0059] Furthermore, as shown in Figures 6 and 9, to facilitate user adjustment of the rotational position of the spraying arm 4 relative to the nozzle 3, the nozzle body 31 is provided with a first tube 33, and the outer peripheral wall of the first tube 33 is provided with multiple first positioning protrusions 34. The rotating arm body 41 is provided with a second tube 46 that rotatably engages with the first tube 33, and the inner peripheral wall of the second tube 46 is provided with a second positioning protrusion 47. The second positioning protrusion 47 and the first positioning protrusions 34 are positioned and engaged. When the rotating arm body 41 rotates relative to the nozzle body 31 from a first preset position to a second preset position, a clicking sound will be emitted.

[0060] Furthermore, when the rotating arm body 41 rotates relative to the nozzle body 31 to the first preset position, in order to prevent the rotating arm body 41 from rotating and shifting, the nozzle body 31 is provided with a positioning slot 35, and the rotating arm body 41 is provided with a retaining plate 48 that engages with the positioning slot 35; when the rotating arm body 41 rotates relative to the nozzle body 31 to the first preset position, the positioning slot 35 and the retaining plate 48 are positioned and engaged.

[0061] Furthermore, as shown in Figure 5, in order to improve hygiene, the rotary spray device also includes a dust cap 6, which is detachably mounted on the nozzle 5.

[0062] In summary, this invention achieves the blocking and opening of the spray channel through the rotation of the spraying arm relative to the spray head, thus providing excellent antibacterial effect. It also reduces the amount of residual agent in the spray channel, facilitating fewer spray cycles for subsequent use. Furthermore, it is convenient for users to use and store. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and has high industrial application value.

[0063] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A rotary arm type liquid spraying device, characterized in that, include: Pump head seat (1), the pump head seat (1) is used to seal the mouth of a liquid storage bottle (7); Pump core mechanism (2) is provided on pump head seat (1). Pump core mechanism (2) has a suction end (211a) and a discharge end (221a). Pump core mechanism (2) draws the medicine in the storage bottle (7) through the suction end (211a) and outputs the medicine from the discharge end (221a). The nozzle (3) includes a nozzle body (31) for the user to press and a nozzle flow channel (32) formed in the nozzle body (31). The nozzle body (31) is located in the pump core mechanism (2), and the nozzle flow channel (32) is connected to the liquid outlet end (221a). The spraying rotating arm (4) includes a rotating arm body (41), a spraying channel (42) formed on the rotating arm body (41), and a blocking member (43). The two ends of the rotating arm body (41) along its own extension direction are a rotating connection end (411) and a suspended spraying end (412), respectively. The rotating connection end (411) is rotatably disposed on the nozzle body (31) so that the spraying channel (42) is connected to the spraying channel (32). The blocking member (43) is disposed on the side of the spraying channel (42) close to the spraying channel (32). Nozzle (5), nozzle (5) is provided at the suspended spray end (412), nozzle (5) has a spray hole (51) with adjustable spray state, and spray hole (51) is connected to spray channel (42); When the rotating arm body (41) rotates relative to the nozzle body (31) to the first preset position, the blocking member (43) blocks the nozzle flow channel (32), and the nozzle flow channel (32) is not connected to the liquid spray channel (42); When the rotating arm body (41) rotates to the second preset position relative to the nozzle body (31), the blocking member (43) does not block the nozzle flow channel (32), and the nozzle flow channel (32) is connected to the liquid spray channel (42).

2. The rotary arm type liquid spraying device according to claim 1, characterized in that: The spraying rotating arm (4) also includes a water core (44), which is a long tube and is inserted into both the spraying channel (42) and the nozzle (5).

3. The rotary arm type liquid spraying device according to claim 1, characterized in that: The required rotation angle from the first preset position to the second preset position is not less than 90 degrees.

4. The rotary arm type liquid spraying device according to claim 1, characterized in that: The pump core mechanism (2) includes a pump valve assembly (21) and a piston assembly (22). The pump valve assembly (21) includes a tubular cavity valve body (211) and a valve ball (212) disposed in the cavity valve body (211). The cavity valve body (211) has a hollow cavity that runs through its own axis. One end of the cavity valve body (211) is disposed on the pump head seat (1), and the other end of the cavity valve body (211) constitutes the liquid suction end (211a). The piston assembly (22) is disposed in the cavity valve body (211), and a part of the structure of the piston assembly (22) constitutes the liquid discharge end (221a).

5. The rotary arm type liquid spraying device according to claim 4, characterized in that: The piston assembly (22) includes a main column (221), a main piston (222), and a secondary piston (223). The main column (221) has a liquid outlet channel, and one end of the main column (221) forms the liquid outlet end (221a) and is connected to the nozzle body (31). The main column (221) has a limiting protrusion (221b) that cooperates with the stop of the pump head seat (1). The main piston (222) is reciprocally slidably disposed in the cavity valve body (211) to form a liquid storage chamber (222a) with a variable volume. A first elastic reset member (224) is provided between the limiting protrusion (221b) and the limiting protrusion (221b); the auxiliary piston (223) includes an auxiliary piston rod (223a) and an auxiliary piston head (223b) connected to each other. The auxiliary piston rod (223a) is slidably inserted into the liquid outlet channel of the main column (221). A second elastic reset member (225) is provided between the auxiliary piston head (223b) and the cavity valve body (211), and the auxiliary piston head (223b) can be liquid-tightly abutted against the main piston (222) under the action of the second elastic reset member (225).

6. The rotary arm type liquid spraying device according to claim 5, characterized in that: The cavity valve body (211) is provided with an air supply hole (213), and the inner wall of the cavity valve body (211) is provided with an air supply protrusion (214). The air supply protrusion (214) is located near the air supply hole (213). When the main piston (222) slides past the air supply protrusion (214), the air supply hole (213) is connected to the outside atmosphere through the gap between the main column (221) and the pump head seat (1).

7. The rotary arm type liquid spraying device according to claim 1, characterized in that: The inner wall of the liquid spray channel (42) is provided with a long groove (45); the blocking member (43) includes an insertion tube (431), a stop plate (432) provided at one end of the insertion tube (431), a blocking protrusion (433) provided on the end face of the stop plate (432), and a retaining strip (434) that is inserted into and cooperates with the long groove (45). The blocking protrusion (433) is used to block the liquid spray channel (32).

8. The rotary arm type liquid spraying device according to claim 1, characterized in that: The main body (31) of the nozzle is provided with a first tube (33), and the outer peripheral wall of the first tube (33) is provided with a plurality of first positioning protrusions (34). The main body (41) of the rotating arm is provided with a second tube (46) that rotates and cooperates with the first tube (33). The inner peripheral wall of the second tube (46) is provided with a second positioning protrusion (47), and the second positioning protrusion (47) and the first positioning protrusion (34) are positioned and cooperated.

9. The rotary arm type liquid spraying device according to claim 1, characterized in that: The main body (31) of the spray head is provided with a positioning slot (35), and the main body (41) of the rotating arm is provided with a retaining plate (48) that engages with the positioning slot (35); when the main body (41) of the rotating arm rotates relative to the main body (31) of the spray head to the first preset position, the positioning slot (35) and the retaining plate (48) are positioned and engaged.

10. The rotary arm type liquid spraying device according to claim 1, characterized in that: The rotating arm type spray device also includes a dust cap (6), which is detachably mounted on the nozzle (5).

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