Automatic liquid discharging device for abluent

Abstract

The automatic liquid discharging device comprises a liquid discharging pump head, an upper liquid discharging pipe is connected to the lower portion of the liquid discharging pump head in a glued mode, the lower end of the upper liquid discharging pipe is arranged in the center of a liquid discharging pump cover in a penetrating mode, and a top control structure is fixedly installed in the liquid discharging pump cover. The top control structure comprises an annular control panel integrated photoelectric sensing module, a charging and discharging module and a power amplifier, and the diameter of the top control structure ranges from phi 10 mm to phi 50 mm; a built-in pump core is connected to the outer side of the lower end of the upper liquid outlet pipe in a sleeving mode, the built-in pump core is made of a PE material in an injection molding mode, the built-in pump core comprises an inner wall, and the inner wall isolates the interior of the built-in pump core and provides independent spaces for the charging module, the induction module and the liquid outlet channel. The charging module and the sensing module are electrically connected with the top control structure, the lower structure of the built-in pump core is an isolation pipe, and the device solves the problem that liquid is prone to leakage after liquid is discharged from an existing liquid discharging device.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid dispensers, and in particular relates to an automatic liquid dispensing device for detergents. Background Art

[0002] In modern life, detergents such as hand soap, shampoo, and dishwashing liquid are commonly used cleaning products in people's daily lives. For ease of use, these products are usually packed in bottles and equipped with a pumping device. Traditional bottles usually require manual pressing of the liquid pump on the top of the bottle to squeeze out the internal detergent through a one-way liquid suction device. This method is inconvenient to use, requires both hands to operate, and requires a certain amount of pressing force to squeeze out the detergent, which is not only inconvenient, but also easily causes product contamination. Therefore, automatic liquid discharge devices are used.

[0003] The automatic liquid discharging device can be operated with one hand, which is not only convenient and fast, but also can accurately control the amount of product to avoid waste and pollution. The automatic liquid discharging device is composed of a bottle body, a hydraulic pump, a sensor, a control panel, a battery and other accessories. The sensor detects that a hand enters the set detection area and sends a signal to the control panel, which drives the hydraulic pump to squeeze out the detergent. However, since the hydraulic pumps that provide the liquid discharging power for the existing automatic liquid discharging device are mostly gear pumps or diaphragm pumps, dripping is prone to occur after the liquid is stopped. Utility Model Content

[0004] The utility model aims to provide an automatic liquid discharging device for detergent in view of the existing device, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an automatic liquid discharge device for detergent, comprising a liquid discharge pump head, an upper liquid discharge pipe is glued to the bottom of the liquid discharge pump head, the lower end of the upper liquid discharge pipe is passed through the center of the liquid discharge pump cover, and a top control structure is fixedly installed inside the liquid discharge pump cover, the top control structure includes a circular control panel integrated with a photoelectric sensing module, a charging and discharging module, and a power amplifier, and the diameter of the top control structure ranges from φ10mm to φ50mm.

[0006] The utility model further illustrates that a built-in pump core is sleeved on the outer side of the lower end of the upper liquid outlet pipe, and the built-in pump core is injection molded by PE material. The built-in pump core includes an inner wall, and the inner wall provides internal isolation of the built-in pump core to provide independent spaces for three units of a charging module, a sensing module and a liquid outlet channel. The charging module and the sensing module are both electrically connected to the top control structure, and the lower structure of the built-in pump core is an isolation tube, and a built-in motor is arranged inside the isolation tube, and the built-in motor is connected to a connecting device, and a primary screw is connected below the connecting device, and the diameter of the primary screw covers a range of φ4mm to φ20mm, and the pitch of the primary screw covers a range of 4mm to 40mm, and the built-in motor is electrically connected to the top control structure.

[0007] The utility model further describes that a secondary worm is glued to the outside of the connecting device, and the upper end of the connecting device is sleeved on the outside of the isolation tube. The secondary worm is made of silicone and has a diameter ranging from φ10mm to φ50mm.

[0008] The utility model further describes that a charging interface is provided on one side of the built-in pump core, and the charging interface is electrically connected to the charging module, and the charging module includes a sound generator and a battery.

[0009] The utility model further illustrates that a photoelectric sensor is arranged on the other side of the built-in pump core, and the photoelectric sensor is electrically connected to the sensing module.

[0010] The utility model further describes that the upper lock buckle of the built-in pump core is connected with a liquid sealing accessory, the liquid sealing accessory is sleeved on the outer side of the upper liquid outlet pipe, and the liquid sealing accessory is located below the top control structure.

[0011] The utility model further illustrates that a bottle cap is glued to the outer side of the lower part of the liquid outlet pump cover, and a bottle body is threadedly connected to the lower side of the bottle cap. A transparent seal is passed through one side of the bottle cap, and the transparent seal is located on the outer side of the photoelectric sensor. The transparent seal itself is transparent, and a rubber plugging cap is passed through the other side of the bottle cap.

[0012] The utility model further describes that the outer side of the primary screw is sleeved with an inner core tube, the upper part of the inner core tube is glued with a liquid storage chamber, the primary screw is close to the inner tube surface of the inner core tube, the liquid storage chamber is threadedly connected to a secondary screw housing, and the secondary worm is passed through the interior of the secondary screw housing.

[0013] The utility model further describes that a notch is provided above the liquid outlet channel, a liquid inlet is provided below the upper liquid outlet pipe, a compression spring is sleeved below the upper liquid outlet pipe, and when the compression spring is in a naturally extended state, the notch coincides with the liquid inlet.

[0014] The utility model further illustrates that the top control structure also includes the following operating steps:

[0015] The maximum single liquid discharge volume is set as a in the top control structure, and the liquid discharge volume per second of the device is set as b. When the object approaches the transparent seal on the bottle cap at a distance of 0 to 30 mm for n seconds, it is determined whether the device continues to discharge liquid;

[0016] When a is greater than n*b, the liquid output has not reached the maximum single liquid output, and the device continues to discharge liquid.

[0017] The utility model further illustrates that the top control structure also includes the following operating steps:

[0018] When a is equal to n*b, the liquid discharge reaches the maximum single discharge volume, and the device stops discharging liquid. If the liquid needs to be discharged, the object needs to be moved out of the set distance and re-entered, and the device will continue to discharge liquid.

[0019] The utility model further illustrates that the top control structure also includes the following operating steps:

[0020] The charging module is electrically connected to the top control structure. Specifically, when the battery power of the device is set to be less than c in the top control structure, the device needs to be charged;

[0021] When the top control structure detects that the battery power in the charging module is less than the set value c, when the photoelectric sensor detects that an object is approaching to realize liquid discharge, the top control structure controls the sounder in the charging module to sound an alarm to remind the device that it needs to be charged.

[0022] Compared with the prior art, the beneficial effects achieved by the utility model are: the utility model,

[0023] (1) A primary screw inserted into the inner core tube and a secondary worm inserted into the outer shell of the secondary screw are driven by a built-in motor through a connecting device, so that the primary screw and the secondary worm rotate in a narrow space to form a screw pump structure, which is beneficial to realize the automatic discharge function of the washing liquid;

[0024] (2) A top control structure is provided, which is electrically connected to the charging module, the sensing module and the built-in motor respectively. The top control structure controls the forward and reverse rotation of the built-in motor by receiving the electrical signal transmitted by the sensing module, which is beneficial to realize the automatic liquid discharge and the back-suction function after the liquid discharge of the device, and effectively prevents the leakage of the liquid after the liquid discharge. The top control structure detects the storage capacity of the device by connecting to the charging module, which is beneficial to send an alarm to personnel when the liquid discharge work is performed under the condition of low power, thereby realizing the effect of reminding charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 It is a schematic diagram of the overall front section of the utility model;

[0027] Figure 2 It is an enlarged schematic diagram of the A area of ​​the utility model;

[0028] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0029] Figure 4 This is a schematic diagram of the primary screw structure of the utility model;

[0030] Figure 5 It is a schematic diagram of the two-stage worm structure of the utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the built-in pump core of the utility model;

[0032] Figure 7 It is a schematic diagram of the top control structure of the utility model;

[0033] In the figure: 1. liquid outlet pump head; 2. liquid outlet pump cover; 3. top control structure; 4. upper liquid outlet pipe; 41. liquid inlet; 5. charging interface; 6. rubber plugging cap; 7. pressing spring; 8. photoelectric sensor; 9. built-in pump core; 91. charging module; 92. sensing module; 93. isolation tube; 94. liquid outlet channel; 95. inner wall; 96. notch; 10. secondary screw housing; 11. bottle cap; 111. transparent seal; 12. built-in motor; 13. secondary worm; 14. primary screw; 15. inner core tube; 16. bottle body; 17. connecting device; 18. liquid seal accessories; 19. liquid storage chamber. DETAILED DESCRIPTION

[0034] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] See also Figure 1-6The utility model provides a technical solution: an automatic liquid discharge device for detergent, including a liquid discharge pump head 1, an upper liquid discharge pipe 4 is glued below the liquid discharge pump head 1, the lower end of the upper liquid discharge pipe 4 is passed through the center of the liquid discharge pump cover 2, and a top control structure 3 is fixedly installed inside the liquid discharge pump cover 2. The top control structure 3 includes a circular control panel integrated with a photoelectric sensing module, a charging and discharging module and a power amplifier. The diameter of the top control structure 3 covers φ10mm to φ50mm. The top control structure 3 is used to control the liquid discharge work of the device and the charging reminder function.

[0036] A built-in pump core 9 is sleeved on the outer side of the lower end of the upper liquid outlet pipe 4. The built-in pump core 9 is injection molded by PE material. The built-in pump core 9 includes an inner wall 95. The inner wall 95 isolates the interior of the built-in pump core 9 into an independent space provided to the three units of the charging module 91, the sensing module 92 and the liquid outlet channel 94. Among them, the charging module 91 is electrically connected to the top control structure 3. The top control structure 3 can both detect the power of the charging module 91 and control the charging module 91 to remind personnel to charge the device in time. The sensing module 92 is electrically connected to the top control structure 3. The sensing module 92 converts the received signal into an electrical signal and transmits it to the top control structure 3, so that the top control structure 3 controls the liquid discharge of the device.

[0037] The lower structure of the built-in pump core 9 is an isolation tube 93, and a built-in motor 12 is arranged inside the isolation tube 93. The isolation tube 93 is used to isolate the washing liquid and separate a dry working environment for the built-in motor 12 to prevent the washing liquid from entering the built-in motor 12 and damaging its function.

[0038] The built-in motor 12 is sleeved with a connecting device 17, and a primary screw 14 is connected below the connecting device 17. The diameter of the primary screw 14 ranges from φ4mm to φ20mm, and the pitch of the primary screw 14 ranges from 4mm to 40mm. The built-in motor 12 drives the primary screw 14 to rotate through the connecting device 17. The built-in motor 12 is electrically connected to the top control structure 3, and the top control structure 3 realizes the liquid discharge and back-suction work of the device by controlling the forward and reverse rotation of the built-in motor 12.

[0039] A secondary worm 13 is glued to the outside of the connecting device 17, and the upper end of the connecting device 17 is sleeved on the outside of the isolation tube 93. The secondary worm 13 is made of silicone. The diameter of the secondary worm 13 ranges from φ10mm to φ50mm. The built-in motor 12 drives the connecting device 17 to rotate, and the connecting device 17 drives the secondary worm 13 to rotate. The rotation of the secondary worm 13 is used to pressurize the liquid lifted by the primary screw 14 and squeeze it into the liquid outlet channel 94 to ensure the stability and continuity of the liquid outlet.

[0040] A charging interface 5 is provided on one side of the built-in pump core 9, and the charging interface 5 is electrically connected to a charging module 91. The charging module 91 includes a sounder and a battery. The sounder is used to realize charging reminders. A photoelectric sensor 8 is provided on the other side of the built-in pump core 9. The photoelectric sensor 8 is electrically connected to a sensing module 92. The photoelectric sensor 8 detects an object 0 to 30 mm close to the device and transmits it to the sensing module 92. The sensing module 92 converts the detected signal into an electrical signal and transmits it to the top control structure 3 to complete the sensing work of the device.

[0041] The upper lock buckle of the built-in pump core 9 is connected to a liquid sealing accessory 18, which is sleeved on the outer side of the upper liquid outlet pipe 4 and is located below the top control structure 3. The liquid sealing accessory 18 is used to isolate the liquid outlet channel 94 from the top control structure 3 to create a dry working environment for the top control structure 3 to prevent the washing liquid from entering the top control structure 3 and damaging its control function.

[0042] A bottle cap 11 is glued to the outer side of the lower part of the liquid outlet pump cover 2, and a bottle body 16 is threadedly connected to the bottom of the bottle cap 11. The bottle body 16 is used to store detergent. A transparent seal 111 is pierced on one side of the bottle cap 11. The transparent seal 111 is located on the outer side of the photoelectric sensor 8. The transparent seal 111 is transparent itself. While not affecting the detection function of the photoelectric sensor 8, it can also isolate the photoelectric sensor 8 from the external environment to prevent the photoelectric sensor 8 from being damaged by the external environment such as water stains, dust, etc. A rubber plugging cap 6 is pierced on the other side of the bottle cap 11. The rubber plugging cap 6 is used to plug the charging interface 5 when the device is not charging to prevent liquid or solid foreign matter from entering the charging interface 5 and affecting the function of the charging module 91. When the device needs to be charged, the rubber plugging cap 6 can be pulled out and then installed into the charging interface 5 after charging is completed.

[0043] An inner core tube 15 is sleeved on the outer side of the primary screw 14, and a liquid storage chamber 19 is glued on the top of the inner core tube 15. The primary screw 14 is close to the inner tube surface of the inner core tube 15, which is conducive to the primary screw 14 rotating with the connecting device 17 in the narrow space inside the inner core tube 15 to form a screw pump structure, so that the washing liquid is absorbed from the bottom of the bottle body 16 and evenly squeezed upward into the liquid storage chamber 19. The liquid storage chamber 19 is used to store the washing liquid squeezed out by the screw pump, and then the washing liquid in the liquid storage chamber 19 enters the next transmission work. The liquid storage chamber 19 is threadedly connected to the secondary screw housing 10, and the secondary worm 13 is penetrated inside the secondary screw housing 10. The secondary screw housing 10 is used to isolate a dry working environment for the transmission of the built-in motor 12 and the primary screw 14, and the secondary screw housing 10 provides a closed working environment for the secondary worm 13.

[0044] A notch 96 is provided above the liquid outlet channel 94, a liquid inlet 41 is provided below the upper liquid outlet pipe 4, a compression spring 7 is sleeved below the upper liquid outlet pipe 4, and the compression spring 7 is conducive to manually squeezing out detergent when the device is out of power. When the compression spring 7 is naturally extended, the notch 96 coincides with the liquid inlet 41, which is conducive to the washing liquid entering the upper liquid outlet pipe 4 from the liquid outlet channel 94 and the liquid inlet 41. Since the upper liquid outlet pipe 4 is connected to the liquid outlet pump head 1, the washing liquid squeezed out by the secondary worm 13 flows out from the liquid outlet pump head 1 through the liquid outlet channel 94 and the upper liquid outlet pipe 4.

[0045] The present embodiment is applied to products packaged in gel detergent bottles, which are currently mainly concentrated in bathing scenes, such as shampoo bottles, conditioner bottles, shower gel bottles, hand soap bottles, dishwashing liquid bottles, laundry detergent bottles, etc. In general, detergent is added to the bottle body 16, the bottle cap 11 and the bottle body 16 are assembled and placed on a work platform, and objects such as human hands and cleaning sponges are brought close to the transparent seal 111 on the bottle cap 11 at a distance of 0 to 30 mm. The photoelectric sensor 8 detects the approach of the object through the transparent seal 111, and transmits the signal to the top control structure 3. The top control structure 3 controls the built-in motor 12 to generate positive rotation. The built-in motor 12 drives the primary screw 14 to rotate forward through the connecting device 17. The primary screw 14 rotates inside the inner core tube 15 to form a screw pump structure to extract the detergent into the liquid storage chamber 1 9, since the secondary worm 13 rotates forwardly with the connecting device 17, the rotation of the secondary worm 13 pressurizes the washing liquid in the liquid storage chamber 19 and squeezes it into the liquid outlet channel 94. The washing liquid enters the upper liquid outlet pipe 4 through the slot 96 and the liquid inlet 41 in turn, and then enters the liquid outlet pump head 1 through the upper liquid outlet pipe 4, and then flows out from the liquid outlet pump head 1 to the nearby object. The liquid outlet speed is set according to the driving power and speed of the built-in motor 12, and can reach 2ml to 5ml per second. When the object is away from the transparent seal 111, the photoelectric sensor 8 detects that the object has left and transmits this signal to the top control structure 3. The top control structure 3 controls the built-in motor 12 to produce reverse rotation, thereby driving the primary screw 14 and the secondary worm 13 to reverse in a short time, realizing the back suction of the washing liquid and avoiding the occurrence of leakage after the liquid outlet stops.

[0046] In some preferred embodiments, based on the above embodiments, the washing liquid discharge can be further controlled by sensing the object approach time.

[0047] When an object approaches the transparent seal 111 on the bottle cap 11 at a distance of 0 to 30 mm, the photoelectric sensor 8 detects the approach of the object through the transparent seal 111, and transmits the signal to the top control structure 3 through the sensing module 92. The top control structure 3 controls the built-in motor 12 to rotate forward and reverse. When the top control structure 3 receives the signal transmitted by the sensing module 92, it controls the built-in motor 12 to rotate forward to drive the transmission mechanism to realize the automatic liquid discharge function of the device. When the liquid discharge is set to end, the built-in motor 12 is controlled to reverse for a short time to realize the function of the device to suck back the washing liquid, which effectively prevents the device from leaking after the liquid is discharged. In order to prevent the object from being accidentally placed in the range detectable by the photoelectric sensor 8, so that the device keeps discharging liquid and causing waste of washing liquid, the maximum single liquid discharge volume of the device needs to be controlled.

[0048] Specifically, the maximum single liquid output of the device is set to a in the top control structure 3, where a is the demand for detergent for a single wash by a person under normal circumstances. The liquid output per second of the device is set to b. When the object approaches the transparent seal 111 on the bottle cap 11 at a distance of 0 to 30 mm for n seconds, it is determined whether the device continues to discharge liquid.

[0049] When a is greater than n*b, the liquid output has not reached the maximum single liquid output, and the device continues to discharge liquid.

[0050] When a is equal to n*b, the liquid output reaches the maximum single output, and the device stops discharging liquid. If it is necessary to continue discharging liquid, the object needs to be moved out of the set distance and re-entered, and the device continues to discharge liquid. This is beneficial for achieving continued discharge of washing liquid when more washing liquid is needed.

[0051] In some preferred embodiments of the present invention, the charging module 91 is electrically connected to the top control structure 3. The top control structure 3 detects the power of the battery in the charging module 91 to determine whether the device has sufficient power. When the top control structure 3 detects that the battery power of the device is less than c, the device needs to be charged.

[0052] Specifically, the top control structure 3 detects that the battery power in the charging module 91 is less than the set value c. When the top control structure 3 detects through the sensing module 92 that an object is approaching and causing the device to discharge liquid, the top control structure 3 controls the sounder in the charging module 91 to sound an alarm to remind nearby personnel that the device is low on power and needs to be charged, thereby realizing the charging reminder function of the device, which is conducive to timely reminding personnel to charge the device and making the device's working function stable.

[0053] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0054] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An automatic liquid dispensing device for detergent, comprising a liquid dispensing pump head (1), characterized in that: An upper liquid outlet pipe (4) is glued to the bottom of the liquid outlet pump head (1), the lower end of the upper liquid outlet pipe (4) is arranged in the center of the liquid outlet pump cover (2), and a top control structure (3) is fixedly installed inside the liquid outlet pump cover (2), the top control structure (3) comprises a circular control panel integrated with a photoelectric sensing module, a charging and discharging module, and a power amplifier, and the diameter of the top control structure (3) ranges from φ10 mm to φ50 mm; The lower end of the upper liquid outlet pipe (4) is sleeved with a built-in pump core (9), the built-in pump core (9) is injection molded with a PE material, and the built-in pump core (9) includes an inner wall (95), and the inner wall (95) provides internal isolation of the built-in pump core (9) to provide independent spaces for three units, namely, a charging module (91), a sensing module (92) and a liquid outlet channel (94). The charging module (91) and the sensing module (92) are both electrically connected to the top control structure (3). The built-in pump core (9) is provided with a plurality of independent spaces. ) is an isolation tube (93), a built-in motor (12) is arranged inside the isolation tube (93), the built-in motor (12) is connected to a connecting device (17), a primary screw (14) is connected below the connecting device (17), the diameter of the primary screw (14) ranges from φ4 mm to φ20 mm, the pitch of the primary screw (14) ranges from 4 mm to 40 mm, and the built-in motor (12) is electrically connected to the top control structure (3); A secondary worm (13) is glued to the outside of the connecting device (17), and the upper end of the connecting device (17) is sleeved on the outside of the isolation tube (93). The secondary worm (13) is made of silicone and has a diameter ranging from φ10 mm to φ50 mm.

2. The automatic liquid dispensing device for detergent according to claim 1, characterized in that: A charging interface (5) is provided on one side of the built-in pump core (9); the charging interface (5) is electrically connected to the charging module (91); and the charging module (91) comprises a sound generator and a battery.

3. The automatic liquid dispensing device for detergent according to claim 2, characterized in that: A photoelectric sensor (8) is provided on the other side of the built-in pump core (9), and the photoelectric sensor (8) is electrically connected to the sensing module (92).

4. The automatic liquid dispensing device for detergent according to claim 3, characterized in that: The upper lock buckle of the built-in pump core (9) is connected to a liquid sealing accessory (18), the liquid sealing accessory (18) is sleeved on the outer side of the upper liquid outlet pipe (4), and the liquid sealing accessory (18) is located below the top control structure (3).

5. The automatic liquid dispensing device for detergent according to claim 4, characterized in that: A bottle cap (11) is glued to the outer side of the lower part of the liquid discharge pump cover (2), and a bottle body (16) is threadedly connected to the lower side of the bottle cap (11). A transparent sealing member (111) is passed through one side of the bottle cap (11), and the transparent sealing member (111) is located on the outer side of the photoelectric sensor (8). The transparent sealing member (111) itself is in a transparent state. A rubber plugging cap (6) is passed through the other side of the bottle cap (11).

6. The automatic liquid dispensing device for detergent according to claim 5, characterized in that: The outer side of the primary screw (14) is sleeved with an inner core tube (15), and a liquid storage chamber (19) is glued on the upper side of the inner core tube (15). The primary screw (14) is close to the inner tube surface of the inner core tube (15), and the liquid storage chamber (19) is threadedly connected to a secondary screw housing (10), and the secondary worm (13) is inserted into the interior of the secondary screw housing (10).

7. The automatic liquid dispensing device for detergent according to claim 6, characterized in that: A notch (96) is provided above the liquid outlet channel (94), a liquid inlet (41) is provided below the upper liquid outlet pipe (4), and a compression spring (7) is sleeved below the upper liquid outlet pipe (4). When the compression spring (7) is in a naturally extended state, the notch (96) overlaps with the liquid inlet (41).

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