Throttling device of hand sanitizer distributor

Abstract

The invention relates to the technical field of throttling valves, and discloses a throttling device of a hand sanitizer distributor, which comprises a hand sanitizer cylinder, a liquid guide pipe is fixedly arranged on the lower side of the hand sanitizer cylinder, a throttling valve is fixedly arranged on the lower side of the liquid guide pipe, a valve bottom shell is fixedly arranged on the lower side of the throttling valve, and a liquid falling assembly is arranged on the inner sides of the throttling valve and the valve bottom shell. An air blowing assembly is arranged between one side of the liquid falling assembly and the inner wall of the throttling valve, a hardening removing assembly is arranged on the inner side of the throttling valve and the inner side of the valve bottom shell, a hand sanitizer distributor shell is installed from the hand sanitizer barrel to the outer side of the valve bottom shell, and the liquid falling assembly comprises a liquid falling pipe fixedly arranged in the center of the valve bottom shell. According to the throttling device of the hand sanitizer distributor, through overall cooperative use, the movement resistance of the structure and the phenomenon that a hardened layer is discharged together are effectively avoided, and residual hand sanitizer in the liquid falling pipe is promoted to flow out downwards.

Description

Technical Field

[0001] This invention relates to the field of throttling valve technology, and in particular to a throttling device for a hand sanitizer dispenser. Background Technology

[0002] Existing wall-mounted hand sanitizer dispensers generally use one-way throttle valves to achieve unidirectional flow and flow control of hand sanitizer, meeting daily dispensing needs. However, this method has significant technical drawbacks in practical applications. After each dispensing, some hand sanitizer remains in the valve nozzle cavity. This residual liquid adheres to the inner wall of the valve nozzle over time, becoming viscous and hardening. Additionally, the spring-loaded barrier structure in the valve stops the dispensing of hand sanitizer. Over time, if the dispenser remains unused, the contact area between the hand sanitizer and the barrier structure dries and hardens, increasing structural resistance and potentially clogging the dispensing channel. This reduces the reliability and lifespan of the dispenser. Summary of the Invention

[0003] The main objective of this invention is to provide a throttling device for a hand sanitizer dispenser, which can effectively solve the problems in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A throttling device for a hand sanitizer dispenser includes a hand sanitizer cartridge, a liquid guide tube fixedly disposed on the lower side of the hand sanitizer cartridge, a throttling valve fixedly disposed on the lower side of the liquid guide tube, a valve base fixedly disposed on the lower side of the throttling valve, a dripping assembly disposed inside the throttling valve and the valve base, an air blowing assembly disposed between one side of the dripping assembly and the inner wall of the throttling valve, a hardening removal assembly disposed inside the throttling valve and the valve base, and a hand sanitizer dispenser housing installed from the hand sanitizer cartridge to the outer side of the valve base. The dripping assembly includes a dripping tube fixedly disposed at the center of the valve base, and a sleeve ring fixedly disposed between the liquid guide tube and the dripping tube inside the throttling valve. Two sets of sliding grooves are formed on the inner wall of the sleeve ring. A switching plug is movably disposed on the inner side of the connecting ring. A slider is fixedly disposed on the outer wall of the switching plug at the position corresponding to the sliding groove. A connecting pipe is fixedly disposed between the lower side of the connecting ring and the valve bottom shell. A communication port is opened on the inner side of the switching plug. Sealing rings are fixedly disposed on the liquid drop pipe, connecting pipe, and liquid guide pipe at the position corresponding to the switching plug. Grooves are opened on both sides of the switching plug. A pressing element is sleeved on one side of the switching plug. A first spring is fixedly disposed between the pressing element and the inner wall of a set of grooves. A fixing ring is fixedly disposed on one side of the pressing element at the position inside the throttle valve. A push ring is fixedly disposed on the side of the switching plug away from the pressing element. A second spring is fixedly disposed between the other set of the two sets of grooves and the inner wall of the throttle valve.

[0006] Preferably, the air blowing assembly includes an air chamber disposed outside the second spring. Two sets of air vents are provided on the inner wall of one side of the air chamber. A plug ring is fitted on the outer side of the sleeve ring. An annular groove is formed on the inner side of the plug ring. A third spring is fixedly disposed between the annular groove and the inner wall of the air chamber. Four sets of first one-way valve cores are installed in the inner wall of the annular groove. Four sets of spring hooks are fixedly disposed on the inner wall of the air chamber. A square groove is formed on the inner side of the plug ring corresponding to the positions of the four sets of spring hooks. A positioning port is formed on one side of the four sets of square grooves. A limit ring is fixedly disposed on the inner wall of the plug ring near the push ring position. A second one-way valve core is fixedly disposed on the first spring.

[0007] Preferably, the hardening removal component includes a movable cylinder movably disposed in a connecting pipe, two sets of fixed shafts fixedly disposed on the outer side of the movable cylinder, and shaft openings corresponding to the positions of the two sets of fixed shafts on the connecting pipe, a fixed frame fixedly disposed on the inner wall of the throttle valve against the pressing component, two sets of guide openings disposed on one side of the fixed frame, an inner plug rod threadedly connected to the inner side of the movable cylinder, a piston block fixedly disposed on the upper end of the inner plug rod, and several sets of fixed plates fixedly disposed on the upper inner wall of the movable cylinder.

[0008] Preferably, the liquid guide tube, the connecting port, and the connecting tube are internally connected, the liquid drop tube is located below the connecting port after the switching plug moves, the switching plug is attached to the inner wall of the sleeve ring, and the slider is slidably disposed in the slide groove.

[0009] Preferably, the pressing member moves partially toward the switching plug and then pushes the switching plug to move. The pressing member passes through one end of the throttle valve to the inside. The distance between the fixing ring and the sleeve ring satisfies the position of the connecting port from the connecting pipe to the drain pipe. The elastic force of the second spring is greater than that of the first spring.

[0010] Preferably, a filter screen is provided on the inner side of both sets of vent holes, the plug ring is attached to the outer side of the sleeve ring, the first one-way valve core and the second one-way valve core are both air intake on the right side, the spring hook is in an elastic tilt state, and one side of the spring hook is configured as a hook shape.

[0011] Preferably, the positioning port satisfies the hook-shaped position of the spring clip to enter and pass through the interior of the positioning port, the limiting ring restricts it at one end of the push ring, and the second one-way valve core is inclined downward.

[0012] Preferably, the movable cylinder fits against the inner wall of the connecting pipe and its upper side partially extends into the communication port; the fixed shaft passes through the inside of the shaft opening; the guide port is sleeved on the outside of the fixed shaft; the guide port is inclined near the fixed shaft; the lower threaded part of the inner plug rod is connected to the movable cylinder; and the piston block fits against the inside of the movable cylinder.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. After pushing the pressing part to move a certain distance, push the switching plug to move to the right. During this process, the partial movement of the pressing part will cause the fixing ring, the fixed frame, and the guide port to move to the right together. The tilted position of the moving guide port will cause the fixed shaft to move downward along the shaft opening, causing the upper part of the movable cylinder to leave the connecting port. Since the movable cylinder is blocked at the bottom of the connecting port, the hand sanitizer is blocked by the movable cylinder and the piston block to prevent it from falling. In order to prevent the hardening layer from forming in the covered area when the device is not used for a long time, since the upper part of the movable cylinder and the piston block is placed in the hand sanitizer, the hardened layer will form on the piston block and be driven downward away from the connecting port. The fixing plate can hook the hardened layer and pull it down together, effectively avoiding the movement resistance of the structure and the hardened layer being discharged together, which would affect the user experience. Afterwards, the piston block can be directly removed by turning the inner plug rod for cleaning.

[0015] 2. When the switching plug is pushed along the slide groove by the pressing component, the first spring is squeezed first, and then the switching plug is pushed to squeeze the second spring until the fixing ring and the sleeve ring contact and limit each other. At this time, the connecting port and the drain pipe are connected to each other, and the hand sanitizer in the hand sanitizer bottle flows out through the drain pipe. After the pressing component is released, the elastic action of the second spring and the first spring causes the switching plug and the pressing component to return to the initial position, automatically disconnecting the drain pipe from the switching plug to achieve closure.

[0016] 3. When the switching plug moves to the right, the push ring will push the limiting ring and the plug ring to move together, squeezing the first one-way valve core in the ring groove. The spring hook passes through the square groove to the positioning port position. The spring hook passes through the positioning port and hooks the plug ring. When the switching plug is rebounded by the second spring, it drives the push ring to move a partial position and hits the hook-shaped position of the spring hook that is protruding from the positioning port, so that the spring hook enters the square groove. The spring hook is released from the restriction on the plug ring, the squeezed first one-way valve core is released, and the plug ring is pushed to the left. The gas between the plug ring and the gas chamber wall is pushed and blown into the interior of the drain pipe by the second one-way valve core, which promotes the downward flow of residual hand sanitizer in the drain pipe, blows away the attached hand sanitizer, solves the problem of dried and hardened accumulation, and ensures that the liquid outlet channel is unobstructed. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the connection structure between the hand sanitizer dispenser cylinder and the throttling valve in the throttling device of the hand sanitizer dispenser according to the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the throttling valve of the throttling device of a hand sanitizer dispenser according to the present invention;

[0019] Figure 3 This is a partial cross-sectional schematic diagram of the liquid discharge component and the air blowing component of the throttling device of a hand sanitizer dispenser according to the present invention;

[0020] Figure 4This is a schematic diagram of the throttling valve structure of a throttling device for a hand sanitizer dispenser according to the present invention;

[0021] Figure 5 This is a partial structural diagram of the air blowing assembly of the throttling device for a hand sanitizer dispenser according to the present invention;

[0022] Figure 6 This is a schematic diagram of the dehardening component structure of the throttling device for a hand sanitizer dispenser according to the present invention;

[0023] Figure 7 This is a schematic diagram of the inner structure of the movable cylinder of the throttling device of a hand sanitizer dispenser according to the present invention;

[0024] Figure 8 This is a schematic diagram of the outer shell structure of a hand sanitizer dispenser, which is a throttling device for a hand sanitizer dispenser according to the present invention.

[0025] In the diagram: 1. Hand sanitizer dispenser; 2. Liquid guide tube; 3. Throttling valve; 4. Valve base; 5. Liquid discharge assembly; 51. Liquid discharge pipe; 52. Connecting ring; 53. Slide groove; 54. Switch plug; 55. Sliding block; 56. Connecting pipe; 57. Connecting port; 58. Sealing ring; 59. Groove; 510. Pressing element; 511. First spring; 512. Fixing ring; 513. Push ring; 514. Second spring; 6. Air blowing assembly; 61. Air chamber; 2. Vent hole; 63. Plug ring; 64. Ring groove; 65. Third spring; 66. First one-way valve core; 67. Spring hook; 68. Square groove; 69. Positioning port; 610. Limiting ring; 611. Second one-way valve core; 7. De-hardening component; 71. Movable cylinder; 72. Fixed shaft; 73. Shaft opening; 74. Fixed frame; 75. Guide port; 76. Inner plug rod; 77. Piston block; 78. Fixing plate; 8. Hand sanitizer dispenser housing. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship as a relative relationship of orientation or position, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0028] Please see Figures 1-8An embodiment of the present invention provides a throttling device for a hand sanitizer dispenser, comprising a hand sanitizer cylinder 1, a liquid guide tube 2 fixedly disposed on the lower side of the hand sanitizer cylinder 1, a throttling valve 3 fixedly disposed on the lower side of the liquid guide tube 2, a valve base shell 4 fixedly disposed on the lower side of the throttling valve 3, a liquid discharge assembly 5 disposed inside the throttling valve 3 and the valve base shell 4, an air blowing assembly 6 disposed between one side of the liquid discharge assembly 5 and the inner wall of the throttling valve 3, a hardening removal assembly 7 disposed inside the throttling valve 3 and the valve base shell 4, and a hand sanitizer dispenser housing 8 installed on the outer side of the hand sanitizer cylinder 1 and the valve base shell 4. The liquid discharge assembly 5 includes a liquid discharge tube 51 fixedly disposed at the center of the valve base shell 4, a connecting ring 52 fixedly disposed between the liquid guide tube 2 and the liquid discharge tube 51 inside the throttling valve 3, two sets of sliding grooves 53 being formed on the inner wall of the connecting ring 52, and a movable groove 53 being formed inside the connecting ring 52. A switching plug 54 has a slider 55 fixedly installed on its outer wall corresponding to the position of the slide groove 53. A connecting pipe 56 is fixedly installed between the lower side of the sleeve ring 52 and the valve bottom shell 4. A connecting port 57 is opened on the inner side of the switching plug 54. A sealing ring 58 is fixedly installed on the liquid drop pipe 51, the connecting pipe 56, and the liquid guide pipe 2 corresponding to the position of the switching plug 54. Grooves 59 are opened on both sides of the switching plug 54. A pressing element 510 is fitted on one side of the switching plug 54. A first spring 511 is fixedly installed between the pressing element 510 and the inner wall of a set of grooves 59. A fixing ring 512 is fixedly installed on one side of the pressing element 510 located inside the throttle valve 3. A push ring 513 is fixedly installed on the side of the switching plug 54 away from the pressing element 510. A second spring 514 is fixedly installed between the other set of grooves 59 and the inner wall of the throttle valve 3.

[0029] The liquid guide tube 2, the connecting port 57, and the connecting tube 56 are internally connected. The liquid drop tube 51 corresponds to the position below the connecting port 57 after the switching plug 54 moves. The switching plug 54 is attached to the inner wall of the sleeve ring 52. The slider 55 is slidably set in the slide groove 53. The positioning port 69 satisfies the hook position of the spring hook 67 to enter and pass through the interior of the positioning port 69. The limiting ring 610 restricts one end of the push ring 513. The second one-way valve core 611 is set inclined downward.

[0030] When the switching plug 54 is pushed along the slide groove 53 by the pressing member 510, the first spring 511 is squeezed first, and then the switching plug 54 is pushed to squeeze the second spring 514 until the fixing ring 512 and the sleeve ring 52 contact and restrict each other. At this time, the connecting port 57 is connected to the drain pipe 51, and the hand sanitizer in the hand sanitizer bottle 1 flows out through the drain pipe 51. After the pressing member 510 is released, the elastic action of the second spring 514 and the first spring 511 causes the switching plug 54 and the pressing member 510 to return to the initial position, automatically disconnecting the drain pipe 51 and the switching plug 54 to achieve closure.

[0031] The air blowing assembly 6 includes an air chamber 61 located outside the second spring 514. Two sets of air holes 62 are provided on the inner wall of one side of the air chamber 61. A plug ring 63 is fitted on the outer side of the sleeve ring 52. An annular groove 64 is opened on the inner side of the plug ring 63. A third spring 65 is fixedly installed between the annular groove 64 and the inner wall of the air chamber 61. Four sets of first one-way valve cores 66 are installed in the inner wall of the annular groove 64. Four sets of spring hooks 67 are fixedly installed on the inner wall of the air chamber 61. A square groove 68 is opened on the inner side of the plug ring 63 corresponding to the positions of the four sets of spring hooks 67. A positioning port 69 is opened on one side of the four sets of square grooves 68. A limit ring 610 is fixedly installed on the inner wall of the plug ring 63 near the push ring 513. A second one-way valve core 611 is fixedly installed on the first spring 511.

[0032] Both sets of vent holes 62 are equipped with filter screens on their inner sides. The plug ring 63 is attached to the outer side of the sleeve ring 52. The first one-way valve core 66 and the second one-way valve core 611 are both air intakes on the right side. The spring hook 67 is in a spring-loaded tilted state. One side of the spring hook 67 is set in a hook shape. The positioning port 69 satisfies the hook-shaped position of the spring hook 67 to enter and pass through the interior of the positioning port 69. The limiting ring 610 restricts one end of the push ring 513. The second one-way valve core 611 is tilted downward.

[0033] When the switching plug 54 moves to the right, the push ring 513 pushes the limiting ring 610 and the plug ring 63 to move together, squeezing the first one-way valve core 66 in the ring groove 64. The spring hook 67 passes through the square groove 68 to the positioning port 69. The spring hook 67 passes through the positioning port 69 and hooks the plug ring 63. When the switching plug 54 is rebounded by the second spring 514, it drives the push ring 513 to move to a partial position and hits the hook-shaped position of the spring hook 67 that is protruding from the positioning port 69, so that the spring hook 67 enters the square groove 68. The spring hook 67 is released from the restriction on the plug ring 63, the squeezed first one-way valve core 66 is released, and the plug ring 63 is pushed to the left. The gas between the plug ring 63 and the inner wall of the air chamber 61 is pushed and blown into the interior of the drain pipe 51 by the second one-way valve core 611, promoting the downward flow of residual hand sanitizer in the drain pipe 51, blowing away the attached hand sanitizer, solving the problem of dried and hardened accumulation, and ensuring that the liquid outlet channel is unobstructed.

[0034] The hardening component 7 includes a movable cylinder 71 movably disposed in the connecting pipe 56. Two sets of fixed shafts 72 are fixedly disposed on the outside of the movable cylinder 71. Shaft openings 73 are provided on the connecting pipe 56 at the positions corresponding to the two sets of fixed shafts 72. A fixed frame 74 is fixedly disposed on the inner wall of the throttle valve 3 against the pressing member 510. Two sets of guide openings 75 are provided on one side of the fixed frame 74. An inner plug rod 76 is threadedly connected to the inner side of the movable cylinder 71. A piston block 77 is fixedly disposed on the upper end of the inner plug rod 76. Several sets of fixed plates 78 are fixedly disposed on the upper inner wall of the movable cylinder 71.

[0035] The movable cylinder 71 fits against the inner wall of the connecting pipe 56 and extends partially to the communication port 57 on its upper side. The fixed shaft 72 passes through the inside of the shaft port 73. The guide port 75 is sleeved on the outside of the fixed shaft 72. The guide port 75 is inclined near the fixed shaft 72. The threaded part of the inner plug rod 76 is connected to the movable cylinder 71. The piston block 77 fits against the inside of the movable cylinder 71.

[0036] After pushing the pressing part 510 a partial distance, the switching plug 54 is then pushed to the right. During this process, the partial movement of the pressing part 510 will cause the fixing ring 512, the fixed frame 74, and the guide port 75 to move to the right together. The tilted position of the moving guide port 75 will cause the fixing shaft 72 to move downward along the shaft opening 73, causing a partial position of the upper part of the movable cylinder 71 to leave the connecting port 57. Since the movable cylinder 71 is blocked at the bottom of the connecting port 57, the hand sanitizer is blocked by the movable cylinder 71 and the piston block 77 to prevent it from falling. In order to prevent the hardening layer from forming in the blocked position when the device is not used for a long time, since the upper part of the movable cylinder 71 and the piston block 77 is partially placed in the hand sanitizer, the hardened layer will form on the piston block 77 and be driven downward away from the connecting port 57. The fixing piece 78 can hook the hardened layer and pull it down together, effectively avoiding the movement resistance of the structure and the hardened layer being discharged together, which would affect the user experience. Afterwards, the piston block 77 can be directly removed by turning the inner plug rod 76 for cleaning.

[0037] Working principle: In use, by pushing the pressing element 510 to move a partial distance, and then pushing the switching plug 54 to move to the right, the partial movement of the pressing element 510 will cause the fixing ring 512, the fixed frame 74, and the guide port 75 to move to the right together. The tilted position of the moving guide port 75 will cause the fixing shaft 72 to move downward along the shaft opening 73, causing a partial position of the upper part of the movable cylinder 71 to leave the connecting port 57. Since the movable cylinder 71 is blocked at the bottom of the connecting port 57, the hand sanitizer is prevented from falling out by the movable cylinder 71 and the piston block 77. This also prevents the hardening layer from forming in the blocked area when the movable cylinder 71 is not used for a long time. 1. The upper part of the piston block 77 is partially placed in the hand sanitizer, and the hardened layer will form on the piston block 77. It will be driven downward away from the connecting port 57. The fixing piece 78 is provided to hook the hardened layer and pull it down together, effectively avoiding the movement resistance of the structure and the hardened layer being discharged together, which would affect the user experience. The piston block 77 can be directly removed and cleaned by turning the inner plug rod 76. When the switching plug 54 is pushed along the slide groove 53 by the pressing member 510, the first spring 511 is squeezed first, and then the switching plug 54 is pushed to squeeze the second spring 514 until the fixing ring 512 and the sleeve ring 52 make contact limit. At this time, the connecting port 57 is connected to the drain pipe 51, and the hand sanitizer in the hand sanitizer bottle 1 flows out through the drain pipe 51. When the press button 510 is released, the elastic action of the second spring 514 and the first spring 511 causes the switching plug 54 and the press button 510 to return to their initial positions, automatically disconnecting the drain pipe 51 from the switching plug 54 to achieve closure. At the same time, when the switching plug 54 moves to the right, the push ring 513 pushes the limiting ring 610 and the plug ring 63 to move together, squeezing the first one-way valve core 66 in the ring groove 64. The spring hook 67 passes through the square groove 68 to the positioning port 69 position, and the spring hook 67 passes through the positioning port 69 to hook. When the stopper ring 63 and the switching plug 54 are rebounded by the second spring 514, the push ring 513 moves to a partial position and hits the hook-shaped position of the partial spring hook 67 that passes through the positioning port 69, so that the spring hook 67 enters the square groove 68. The spring hook 67 is released from the restriction of the stopper ring 63, and the squeezed first one-way valve core 66 is released, pushing the stopper ring 63 to move to the left. The gas between the stopper ring 63 and the inner wall of the air chamber 61 is pushed and blown into the interior of the drain pipe 51 by the second one-way valve core 611, promoting the downward flow of residual hand sanitizer in the drain pipe 51, blowing away the attached hand sanitizer, solving the problem of dried and hardened accumulation, and ensuring that the liquid outlet channel is unobstructed.

[0038] The connection method and control of the hand sanitizer cylinder 1, liquid guide tube 2, throttle valve 3, valve bottom shell 4, and hand sanitizer dispenser shell 8 in this invention are common knowledge in the field. Their working principle is already well-known technology, and the appropriate model is selected according to actual use, so it will not be explained in detail.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flow restriction device for a hand sanitizer dispenser comprising a hand sanitizer cartridge (1), characterized in that: The lower side of the hand washing liquid barrel (1) is fixedly provided with a liquid guide pipe (2), the lower side of the liquid guide pipe (2) is fixedly provided with a throttle valve (3), the lower side of the throttle valve (3) is fixedly provided with a valve bottom shell (4), the inner side of the throttle valve (3) and the valve bottom shell (4) is provided with a liquid falling assembly (5), the inner wall of the liquid falling assembly (5) is provided with a gas blowing assembly (6), the inner side of the throttle valve (3) and the valve bottom shell (4) is provided with a hardening removing assembly (7), the outer side of the hand washing liquid barrel (1) to the valve bottom shell (4) is installed with a hand washing liquid dispenser shell (8), the liquid falling assembly (5) comprises a liquid falling pipe (51) fixedly arranged at the center position of the valve bottom shell (4), the inner side of the liquid guide pipe (2) and the liquid falling pipe (51) is fixedly provided with a sleeve ring (52), two groups of sliding grooves (53) are formed in the inner wall of the sleeve ring (52), a switching plug (54) is movably arranged in the inner side of the sleeve ring (52), a sliding block (55) is fixedly arranged on the outer wall of the switching plug (54) corresponding to the position of the sliding groove (53), a connecting pipe (56) is fixedly arranged between the lower side of the sleeve ring (52) and the valve bottom shell (4), a communication port (57) is formed in the inner side of the switching plug (54), a sealing ring (58) is fixedly arranged on the position of the liquid falling pipe (51), the connecting pipe (56) and the liquid guide pipe (2) corresponding to the switching plug (54), recesses (59) are formed on both sides of the switching plug (54), a pressing piece (510) is sleeved on one side of the switching plug (54), a first spring (511) is fixedly arranged between the pressing piece (510) and the inner wall of one group of recesses (59), a fixed ring (512) is fixedly arranged on the side of the pressing piece (510) located in the inner side of the throttle valve (3), a pushing ring (513) is fixedly arranged on the side of the switching plug (54) away from the pressing piece (510), a second spring (514) is fixedly arranged between the other group of recesses (59) and the inner wall of the throttle valve (3).

2. A flow restriction device for a hand sanitizer dispenser according to claim 1, wherein: The gas blowing assembly (6) comprises a gas chamber (61) arranged on the outer side of the second spring (514), two groups of air holes (62) are arranged on the inner wall of one side of the gas chamber (61), a plug ring (63) is sleeved on the outer side of the sleeve ring (52), an annular groove (64) is formed in the inner side of the plug ring (63), a third spring (65) is fixedly arranged between the annular groove (64) and the inner wall of the gas chamber (61), four groups of first one-way valve cores (66) are installed on the inner wall of the annular groove (64), four groups of spring hooks (67) are fixedly arranged on the inner wall of the gas chamber (61), square grooves (68) are formed in the inner side of the plug ring (63) corresponding to the positions of the four groups of spring hooks (67), positioning ports (69) are formed on one side of the four groups of square grooves (68), a limiting ring (610) is fixedly arranged on the inner wall of the plug ring (63) close to the position of the pushing ring (513), a second one-way valve core (611) is fixedly arranged on the first spring (511).

3. A flow restriction device for a hand sanitizer dispenser according to claim 2, wherein: The dehardening assembly (7) comprises a movable cylinder (71) movably arranged in a connecting pipe (56), two groups of fixed shafts (72) are fixedly arranged outside the movable cylinder (71), shaft openings (73) are formed on the connecting pipe (56) corresponding to the positions of the two groups of fixed shafts (72), a fixed frame (74) is fixedly arranged on the inner wall of the pressing piece (510) close to the throttle valve (3), two groups of guide openings (75) are arranged on one side of the fixed frame (74), an inner plug rod (76) is threadedly connected to the inner side of the movable cylinder (71), a piston block (77) is fixedly arranged on the upper end of the inner plug rod (76), and a plurality of groups of fixed pieces (78) are fixedly arranged on the inner wall of the upper side of the movable cylinder (71).

4. A flow restriction device for a hand sanitizer dispenser according to claim 1, wherein: The liquid guide pipe (2), the communication opening (57) and the connecting pipe (56) are in communication, the liquid falling pipe (51) corresponds to the lower side position of the communication opening (57) after the movement of the switching plug (54), the switching plug (54) is attached to the inner wall of the sleeving ring (52), and the sliding block (55) is slidingly arranged in the sliding groove (53).

5. A flow regulating device for a hand sanitizer dispenser as defined in claim 1, wherein: The pressing piece (510) moves locally to the switching plug (54) and then pushes the switching plug (54) to move, the pressing piece (510) passes through one end of the throttle valve (3) to the inside, the distance between the fixed ring (512) and the sleeving ring (52) satisfies the position of the communication opening (57) from the connecting pipe (56) to the liquid falling pipe (51), and the elastic force of the second spring (514) is greater than that of the first spring (511).

6. A flow restriction device for a hand sanitizer dispenser according to claim 2, wherein: The inner sides of the two groups of air holes (62) are provided with filter screens, the plug block ring (63) is attached to the outer side of the sleeving ring (52), the first one-way valve core (66) and the second one-way valve core (611) are right side air inlets, the elastic sheet hook (67) is in an elastic inclined state, and one side of the elastic sheet hook (67) is provided in a hook shape.

7. A flow regulating device for a liquid soap dispenser as defined in claim 2, wherein: The positioning opening (69) satisfies that the hook shape of the elastic sheet hook (67) enters and passes through the inside of the positioning opening (69), the limiting ring (610) is limited at one end of the pushing ring (513), and the second one-way valve core (611) is arranged in an inclined downward manner.

8. A flow restriction device for a hand sanitizer dispenser according to claim 3, wherein: The movable cylinder (71) is attached to the inner wall of the connecting pipe (56) and partially to the upper side of the communication opening (57), the fixed shaft (72) passes through the inside of the shaft opening (73), the guide opening (75) is sleeved on the outer side of the fixed shaft (72), the guide opening (75) is arranged in an inclined manner close to the fixed shaft (72), the lower threaded part of the inner plug rod (76) is connected with the movable cylinder (71), and the piston block (77) is attached to the inside of the movable cylinder (71).

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