End cap, dispensing pump and liquid outlet device

Abstract

The invention discloses an end cap, a dispensing pump and a liquid outlet device, and the end cap comprises a shell and a flow dividing part which are connected with each other; the shell is provided with a liquid inlet hole and a concentration channel, the concentration channel is provided with a first end and a second end which are oppositely arranged, and the first end of the concentration channel is communicated with the liquid inlet hole; a plurality of flow dividing channels and a plurality of liquid outlet holes are formed in the flow dividing piece, the flow dividing channels are communicated between the second end of the concentration channel and the liquid outlet holes, and the flow dividing channels are communicated with the liquid outlet holes in a one-to-one correspondence mode; and the ratio of the sum of the cross sectional areas of the plurality of shunting channels to the cross sectional area of the second end of the concentrating channel is 0.1-1.5. The end cap, the dispensing pump and the liquid outlet device provided by the invention have the advantages of leakage prevention and good liquid outlet effect.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of pump dispensers, and in particular to an end cap, a dispensing pump, and a liquid outlet device. Background Art

[0002] A pump dispenser is a device for discharging a predetermined amount of contents stored in a container by pressure, and is widely used in products such as dishwashing liquid, shampoo, shower gel, hand soap, etc.

[0003] In the related pump dispenser, when the user presses the head, the shaft resists the elastic force of the elastic member and descends, and the liquid in the shell flows into the channel of the head through the connecting tube and then flows out from the flow outlet of the head. When the user releases the head, the shaft rises due to the elastic force of the elastic member, preventing the contents in the shell from entering the channel of the head.

[0004] However, when the above-mentioned pump dispenser pumps out liquids with low viscosity such as disinfectant and floor cleaning liquid, there is a problem that the liquid remaining in the head is easy to drip from the outflow port. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide an end cap, a dispensing pump and a liquid outlet device, which can solve the problem that when a pump dispenser pumps out liquids with lower viscosity such as disinfectants and floor cleaning liquids, the liquid remaining in the head is prone to dripping from the outlet.

[0006] To achieve the above-mentioned purpose, one aspect of an embodiment of the present application provides an end cap for a dispensing pump, the end cap comprising a shell and a diverter member connected to each other; the shell has a liquid inlet and a concentrating channel, the concentrating channel has a first end and a second end arranged opposite to each other, the first end of the concentrating channel is connected to the liquid inlet; the diverter member is formed with a plurality of diverter channels and a plurality of liquid outlets, the plurality of diverter channels are connected between the second end of the concentrating channel and the plurality of liquid outlets, and the plurality of diverter channels are connected to the plurality of liquid outlets in a one-to-one correspondence; the ratio of the sum of the cross-sectional areas of the plurality of diverter channels to the cross-sectional area of ​​the second end of the concentrating channel is between 0.1 and 1.5.

[0007] To achieve the above-mentioned purpose, another aspect of an embodiment of the present application further provides a dispensing pump, including a guide tube, a cover body and the end cap as described above, wherein the guide tube passes through the cover body, the liquid inlet hole of the end cap is connected to the guide tube, and the end cap can be slidably disposed on the guide tube.

[0008] To achieve the above-mentioned purpose, another aspect of an embodiment of the present application further provides a liquid outlet device, including a shell and a dispensing pump as described above, the shell having an opening and an inner cavity connected to the opening, the cover body covering the opening of the shell, at least a portion of the guide tube of the dispensing pump being inserted into the inner cavity of the shell, and at least a portion of the guide tube of the dispensing pump being located on the outside of the shell and connected to the end cap of the dispensing pump.

[0009] In summary, the end cap, distribution pump and liquid outlet device provided in the embodiment of the present application are provided with a shell and a diverter connected to each other, and the shell has a liquid inlet and a central channel, the first end of the central channel is connected to the liquid inlet, the second end of the central channel is connected to the multiple diverter channels of the diverter, and the ends of the multiple diverter channels away from the central channel are connected to the multiple liquid outlets one by one; the liquid can flow into the central channel from the liquid inlet, and flow out from the multiple liquid outlets through the multiple diverter channels. Compared with the large-sized outflow port and inner cavity of the pump-type dispenser in the related art, the liquid in the embodiment of the present application flows out from the multiple small-sized diverter channels and multiple liquid outlets, and the surface tension of the liquid at each liquid outlet increases, which avoids the problem of the liquid with low viscosity (such as disinfectant, floor cleaning liquid, etc.) remaining in the end cap dripping from the liquid outlet due to gravity or external force shaking.

[0010] In addition, the ratio of the sum of the cross-sectional areas of the multiple diversion channels to the cross-sectional area of ​​one end of the concentrating channel close to the multiple diversion channels is between 0.1 and 1.5, so as to avoid the problem that the flow rate of the liquid flowing out of the liquid outlet is too small and the spray distance is short, or the flow rate is too large and the spray distance is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 A schematic diagram of a head of a pump dispenser of the related art;

[0013] Figure 2 A schematic diagram of an end cap provided in an embodiment of the present application;

[0014] Figure 3 A longitudinal cross-sectional view of another end cap provided in an embodiment of the present application;

[0015] Figure 4 A longitudinal cross-sectional view of another end cap provided in an embodiment of the present application;

[0016] Figure 5A longitudinal cross-sectional view of another end cap provided in an embodiment of the present application;

[0017] Figure 6 A transverse cross-sectional view of an end cap provided in an embodiment of the present application;

[0018] Figure 7 A transverse cross-sectional view of another end cap provided in an embodiment of the present application;

[0019] Figure 8 A schematic diagram of a liquid outlet device provided in an embodiment of the present application.

[0020] Description of reference numerals:

[0021] 1000. Distribution pump;

[0022] 100, end cap; 110, housing; 111, liquid inlet; 112, centralizing channel; 120, diverter; 121, liquid outlet; 122, diverter channel; 130, clamp; 140, pressing position;

[0023] 200, guide tube;

[0024] 300, cover body;

[0025] 2000, housing; 2100, opening;

[0026] 3000, head; 3100, inlet; 3200, outlet. DETAILED DESCRIPTION

[0027] As described in the background art, when a pump dispenser in the related art pumps out a low-viscosity liquid such as a disinfectant or floor cleaning liquid, the liquid remaining in the head easily drips from the outlet. The reasons for this problem are as follows:

[0028] Figure 1 Schematic diagram of the head of a pump dispenser of the related art. Figure 1 , the liquid can flow into the inner cavity of the head 3000 from the inlet 3100 of the head 3000, and then flow out of the inner cavity of the head 3000 from the outlet 3200 of the head 3000. It can be understood that after the user presses the head 3000 to complete the pumping operation, the inner cavity of the head 3000 is filled with liquid. For liquids with higher viscosity, the force between the liquid and the inner cavity wall of the head 3000 is larger, and the liquid is not easy to flow out from the outlet 3200 of the head 3000. However, for liquids with lower viscosity, especially those with lower surface tension, the force between the liquid and the inner cavity wall of the head 3000 is small, and it is easier for the liquid to flow out from the outlet 3200 of the head 3000 due to external forces such as gravity or vibration.

[0029] In view of the above technical problems, the embodiment of the present application provides an end cap, the flow divider of which can form a plurality of flow divider channels and a plurality of liquid outlet holes, and the plurality of flow divider channels are connected to the plurality of liquid outlet holes in a one-to-one correspondence. The size of the cross section of each flow divider channel is smaller than that of the related art ( Figure 1 The cross-sectional size of the inner cavity of the head 3000 of the middle) is reduced by reducing the size of the diversion channel through which the liquid flows and reducing the size of the outlet hole for the liquid to flow out, so as to increase the viscosity between the liquid and the channel and the viscosity between the molecules of the liquid, thereby increasing the surface tension of the liquid at the outlet hole of the diversion channel to prevent the liquid from dripping from the outlet hole.

[0030] It is worth noting that the liquid will perform free fall motion due to gravity after leaving the liquid outlet. Since the liquid has an initial velocity when leaving the liquid outlet, the motion trajectory of the liquid is a parabola, and the spray distance of the liquid is: the length of the parabola in the horizontal direction.

[0031] The inventors found during the experiment using the above solution that the liquid with low viscosity would be sprayed out from the liquid outlet in the form of dots and lines, and the liquid spray distance is long, which is not easy to control. The inventors found through research that the reason is that the smaller the cross-section through which the liquid flows, the faster the flow rate, the greater the initial velocity (liquid outlet flow rate) of the liquid when it leaves the liquid outlet, and the longer the liquid spray distance.

[0032] The inventors thought of reducing the liquid flow rate by increasing the resistance. Conventional ways to increase resistance are: increasing the length of the shunt channel and the cross-sectional area of ​​the shunt channel, but the above two methods undoubtedly increase the volume of the shunt channel, which in turn leads to an increase in the volume of the end cap. The inventors of the present application have found that changing the ratio of the areas at the cross-sectional change point can effectively control the flow resistance and flow rate. The ratio should not be too large or too small. A ratio that is too large (such as a trumpet shape) will result in a too low liquid flow rate, causing the liquid to be weak and flow out along the inner wall of the shunt channel; if the ratio is too small, the pressure of the liquid will increase greatly when it flows out, and the liquid will be sprayed out in the form of dots and lines. The inventors have found that the appropriate range of the ratio is between 0.1 and 1.5.

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0034] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] Figure 2This is a schematic diagram of an end cap 100 provided in an embodiment of the present application. Figure 2 The end cap 100 provided in the embodiment of the present application can be used for a dispensing pump, and the end cap 100 may include a housing 110 and a flow divider 120 connected to each other. The housing 110 may have a liquid inlet hole 111 and a centralizing channel 112. The centralizing channel 112 may have a first end and a second end that are arranged opposite to each other, wherein the liquid inlet hole 111 is arranged at the first end of the centralizing channel 112, so that the liquid can flow from the liquid inlet hole 111 into the first end of the centralizing channel 112 and then flow to the second end of the centralizing channel 112.

[0036] The liquid inlet hole 111 can be disposed on the bottom surface of the housing 110. When assembling the dispensing pump 1000, Figure 8 The guide tube 200 is shown with Figure 2 The end cap 100 shown is connected to the liquid inlet hole 111. In addition, the pressing position 140 of the end cap 100 can be arranged on the opposite side of the liquid inlet hole 111 so that when the pressing position 140 is pressed, Figure 8 The liquid stored in the housing 2000 of the liquid outlet device shown can flow into the centralizing channel 112 through the guide tube 200 and the liquid inlet hole 111 .

[0037] Continue to refer Figure 2 The diverter member 120 may be formed with a plurality of liquid outlet holes 121 and a plurality of diverter channels 122, wherein the plurality of diverter channels 122 may be connected between the second end of the concentrating channel 112 and the plurality of liquid outlet holes 121, so that the liquid may flow from the liquid inlet hole 111 into the first end of the concentrating channel 112, and then flow to the plurality of diverter channels 122 through the second end of the concentrating channel 112, and then flow out from the plurality of liquid outlet holes 121.

[0038] In the embodiment of the present application, the flow divider 120 is arranged at an end away from the liquid inlet hole 111 (or the pressing position 140), so as to avoid damage to the flow divider 120 when pressing the end cap 100. In addition, compared with the pump dispenser ( Figure 1 The large-sized outflow port 3200 and the inner cavity are shown. In the embodiment of the present application, the liquid flows out from the multiple small-sized diversion channels 122 and the multiple liquid outlet holes 121. The viscosity of the liquid in each diversion channel 122 increases, and the surface tension of the liquid at each liquid outlet hole 121 increases, thereby preventing the liquid with lower viscosity (such as disinfectant, floor cleaning liquid, etc.) remaining in the end cap 100 (in the concentrating channel 112 or in the diversion channel 122) from dripping from the liquid outlet hole 121 due to gravity or external force.

[0039] In addition, in order to avoid the liquid flowing out of the liquid outlet 121 from having too low a flow rate and a short spray distance, or having a large flow rate and a long spray distance, the ratio of the sum of the cross-sectional areas of the plurality of diverter channels 122 of the end cap 100 provided in the embodiment of the present application to the cross-sectional area of ​​the second end of the concentrating channel 112 is between 0.1 and 1.5. For example, the ratio may be 0.1; the ratio may be 0.8; the ratio may be 1.5.

[0040] Specifically, the first end of the concentrating channel 112 is in communication with the liquid inlet hole 111, the second end of the concentrating channel 112 is in communication with the plurality of branching channels 122, and the plurality of branching channels 122 are in communication with the plurality of liquid outlet holes 121. Thus, the flow path of the liquid in the end cap 100 may be: the liquid flows from the liquid inlet hole 111 into the concentrating channel 112, flows from the first end of the concentrating channel 112 to the second end of the concentrating channel 112, then enters the plurality of branching channels 122, and then flows out from the plurality of liquid outlet holes 121.

[0041] The cross-sectional area of ​​the second end of the concentrating channel 112 in the above-mentioned ratio refers to the cross-sectional area of ​​the concentrating channel 112 located upstream of the branching channel 122 .

[0042] Wherein, in the diverter 120, Figure 2 and Figure 3 When at least part of the concentrated channel 112 is embedded in the concentrated channel 112, the cross-sectional area of ​​the second end of the concentrated channel 112 in the ratio is: the cross-sectional area of ​​the concentrated channel 112 at the adjacent position of the flow dividing member 120 facing the liquid inlet hole 111. The cross-sectional area of ​​the concentrated channel 112 at the adjacent position refers to: the cross-sectional area of ​​the concentrated channel 112 at a certain distance from the end face of the flow dividing channel 122; or, the average of multiple cross-sectional areas of a section of the concentrated channel 112 at a certain distance from the end face of the flow dividing channel 122. The length is greater than or equal to 0.

[0043] In addition, in the flow divider 120, Figure 4 and Figure 5 When located outside the concentrating channel 112, the cross-sectional area of ​​the second end of the concentrating channel 112 in the ratio is: the cross-sectional area of ​​the end face of the concentrating channel 112; or, the average of multiple cross-sectional areas of a section of the concentrating channel 112 at a certain distance from the end face.

[0044] In the flow direction of the liquid, the cross-sectional area of ​​the diverting channel 122 may be variable or constant. When the cross-sectional area of ​​the diverting channel 122 is variable, the average of the multiple cross-sectional areas of the diverting channel 122 may be compared with the second end of the concentrating channel.

[0045] In order to improve the liquid discharge effect and the pressing feel, further, the ratio of the sum of the cross-sectional areas of the plurality of diversion channels 122 to the cross-sectional area of ​​the second end of the concentrating channel 112 may be between 0.2 and 0.9. For example, the ratio may be 0.2; 0.5; or 0.9.

[0046] Optionally, multiple diversion channels 122 can be connected to multiple liquid outlet holes 121 in a one-to-one correspondence, that is, each diversion channel 122 has a unique corresponding liquid outlet hole 121 to facilitate smooth flow of liquid and avoid liquid fluctuations caused by crossover or diversion of liquid in different diversion channels 122, thereby affecting the pumping effect.

[0047] It should be noted that when the flow divider 120 is at least partially embedded in the central channel 112, Figure 2 As shown, the flow divider 120 is completely embedded in the central channel 112; or, as shown in FIG. Figure 3 As shown, a portion of the flow divider 120 may be embedded in the central channel 112 , and another portion of the flow divider 120 may be located outside the central channel 112 .

[0048] In addition, the flow dividing member 120 may form the flow dividing channel 122 in the following ways:

[0049] Figure 6 This is a transverse cross-sectional view of an end cap 100 provided in an embodiment of the present application. Figure 6 The flow divider 120 can form a plurality of flow divider channels 122 through a plurality of through holes penetrating the flow divider 120. The cross-sectional shape of the through hole can be a closed ring, and the inner wall of the through hole can form the flow divider channel 122; or at least part of the flow divider 120 is embedded in the central channel 112, the cross-sectional shape of the through hole can be an unclosed figure, and the inner wall of the through hole and the inner cavity wall of the central channel 112 can jointly enclose the flow divider channel 122.

[0050] Figure 7 This is a transverse cross section of another end cap 100 provided in an embodiment of the present application. Figure 7 The flow divider 120 may also form a plurality of flow divider channels 122 by means of a plurality of plates intersecting vertically and horizontally. The flow divider channels 122 may be formed by the plurality of intersecting plates; or at least a portion of the flow divider 120 may be embedded in the central channel 112, and the flow divider channels 122 may be formed by the plurality of intersecting plates and the inner cavity wall of the central channel 112.

[0051] It is worth noting that the cross-sectional shape of the diversion channel 122 can be Figure 6 The circular shape shown Figure 7The shunt channel 122 is shown in regular shapes such as square, triangle, and fan. Of course, the cross-sectional shape of the shunt channel 122 may also be an irregular shape. The embodiment of the present application does not specifically limit the shape of the cross-sectional shape of the shunt channel 122. In addition, the through hole mentioned above can be obtained by drilling later; or, the shunt member 120 is made of a porous material such as porous glass, porous ceramic, porous foam plastic, etc., which has a certain structural strength and can ensure that the structure of the shunt member 120 will not be destroyed when the end cap 100 is pressed, so as to obtain smaller pores and simplify the processing steps.

[0052] In addition, the flow divider 120 and the housing 110 may be an integral part made by an integral molding process (such as integral injection molding, 3D printing, etc.) to simplify the processing steps. Alternatively, the housing 110 and the flow divider 120 may be assembled separately to form the end cap 100 .

[0053] The assembly methods of the flow divider 120 and the housing 110 may be as follows:

[0054] In one possible implementation of the assembly of the flow divider 120 and the housing 110, refer to Figure 3 , at least part of the diverter 120 is embedded in the centralized channel 112, and the diverter 120 and the shell 110 can be assembled by snap connection, threaded connection, interference fit, glue dispensing and other connection methods. There may be the following two interference fit methods: one exemplary method, the diverter 120 may have a certain deformation force, and before the diverter 120 does not penetrate into the centralized channel 112, the cross-section of part of the diverter 120 may be slightly larger than the cross-section of the centralized channel 112. After the diverter 120 penetrates into the centralized channel 112, it will be deformed by the extrusion force. Another exemplary method, the cross-section of the diverter 120 may be smaller than the cross-section of the centralized channel 112, and the outer side of the nested part of the two may be provided with a tightening member (such as a cable tie, a clamp, etc.), and as the cross-sectional area of ​​the tightening member decreases, the diverter 120 and the shell 110 can be tightened together.

[0055] In another possible implementation of assembling the flow divider 120 and the housing 110, refer to Figure 4 One end of the flow divider 120 can be sleeved on the outer side of the housing 110, and the other end of the flow divider 120 can have a plurality of flow divider channels 122. The flow divider 120 and the housing 110 can be connected by means of snap connection, thread connection, interference fit, glue dispensing, etc.

[0056] In another possible implementation of assembling the flow divider 120 and the housing 110, refer to Figure 5 The flow divider 120 and the housing 110 can be connected in a mating manner, and the connection methods of the two can include: bonding, welding, tight connection, etc. Figure 5In the figure, the flow dividing member 120 and the housing 110 are tightly connected by the fastening member 130 as an example.

[0057] In order to improve the anti-leakage effect, optionally, the equivalent diameter of the cross section of the diverter channel 122 may be less than 2 mm. When the cross section of the diverter channel 122 is circular, the equivalent diameter is the diameter of the cross section of the diverter channel 122. When the cross section of the diverter channel 122 is non-circular, the equivalent diameter is the diameter of a circle with the same cross section area as the diverter channel 122. For example, the area of ​​a rectangular hole with a size of 3 mm × 5 mm is 15 mm. 2 , area 15mm 2 The diameter of the circular hole is 4.37 mm. Then the equivalent diameter of the rectangular hole with a size of 3 mm × 5 mm is 4.37 mm.

[0058] Furthermore, the equivalent diameter of the cross section of the diverter channel 122 may be between 0.06 mm and 0.2 mm to further enhance the anti-drip effect and make it more suitable for liquids with lower viscosity. For example, the equivalent diameter of the cross section of the diverter channel 122 may be 0.06 mm; the equivalent diameter of the cross section of the diverter channel 122 may be 0.15 mm; the equivalent diameter of the cross section of the diverter channel 122 may be 0.2 mm.

[0059] Optionally, the length of the shunt channel 122 (the length of the path of the liquid flowing in the shunt channel 122) may be not less than 2 mm, so as to increase the resistance of the shunt channel 122 to the liquid, thereby preventing the liquid from flowing out of the liquid outlet 121 from flowing too fast. Furthermore, the length of the shunt channel 122 may be between 2 mm and 10 mm, so as to prevent dripping and ensure smooth liquid discharge. For example, the length of the shunt channel 122 may be 2 mm; the length of the shunt channel 122 may be 6 mm; the length of the shunt channel 122 may be 10 mm.

[0060] Optionally, one end of the diversion channel 122 away from the concentrating channel 112 may be tilted downward so that the liquid flows downward from the liquid outlet 121, thereby reducing the length of the liquid sprayed outward, making it easier for the user to control.

[0061] In summary, the end cap 100 provided in the embodiment of the present application has good performance in terms of pressing feel, pumping volume, pumping distance, pumping stability, etc. when the equivalent diameter of the cross-section of the diverter channel 122 is between 0.06mm and 0.2mm, the length of the diverter channel 122 is between 2mm and 10mm, and the ratio of the sum of the cross-sectional areas of the plurality of diverter channels 122 to the cross-sectional area of ​​the second end of the concentrating channel 112 is between 0.2 and 0.9, and can also avoid the problem of dripping of low-viscosity liquids.

[0062] refer to Figure 8The present application also provides a dispensing pump 1000, which may include a guide tube 200, a cover body 300, and the end cap 100 as mentioned above. The guide tube 200 may be inserted into the cover body 300, the liquid inlet hole 111 of the end cap 100 may be connected to the guide tube 200, and the end cap 100 may be slidably disposed on the guide tube 200. The dispensing pump 1000 provided in the present application avoids the problem that the liquid with low viscosity (such as disinfectant, floor cleaning liquid, etc.) remaining in the end cap 100 drips from the liquid outlet hole 121 due to gravity or external force shaking, and also avoids the problem that the flow rate of the liquid flowing out of the liquid outlet hole 121 is too small and the spray distance is short, or the flow rate is large and the spray distance is long.

[0063] Continue to refer Figure 8 The embodiment of the present application also provides a liquid outlet device, which may include a housing 2000 and the above-mentioned dispensing pump 1000, wherein the housing 2000 has an opening 2100 and an inner cavity connected to the opening 2100, and the cover 300 covers the opening 2100 of the housing 2000, and at least part of the guide tube 200 of the dispensing pump 1000 is inserted into the inner cavity of the housing 2000, and at least part of the guide tube 200 of the dispensing pump 1000 is located outside the housing 2000 and is connected to the end cap 100 of the dispensing pump 1000. The liquid outlet device provided in the embodiment of the present application avoids the problem that the liquid with low viscosity (such as disinfectant, floor cleaning liquid, etc.) remaining in the end cap 100 drips from the liquid outlet hole 121 due to gravity or external force shaking, and also avoids the problem that the flow rate of the liquid flowing out of the liquid outlet hole 121 is too small and the spray distance is short, or the flow rate is large and the spray distance is long.

[0064] Application scenarios:

[0065] User A has an empty bottle of a Type A liquid outlet device, which was originally used to store and quantitatively pump out liquids with high viscosity such as hand sanitizer, lotion, and facial cleanser. User A purchased a large-capacity liquid disinfection product. However, the container used to hold the disinfectant in the liquid disinfection product is a wide-mouth bottle, that is, the container has a large opening. This will cause User A to often spill the liquid when using the liquid disinfection product because he cannot control the flow rate. User A thought of using a Type A liquid outlet device to store the disinfectant and pump out a quantitative amount of disinfectant. However, when User A used the Type A liquid outlet device to pump out the disinfectant, he found that the amount of disinfectant pumped out was large and was sprayed out in the form of dots and lines. And after User A finished using the liquid outlet device, disinfectant always dripped from the outlet of the Type A liquid outlet device.

[0066] User A told his friend B about the above situation. After understanding the situation, friend B suggested to user A that a liquid outlet device, a dispensing pump and an end cap designed for disinfectant should be selected. After listening to friend B's suggestion, A chose to purchase an end cap of a size suitable for the A-type liquid outlet device, considering waste utilization. After user A replaced the end cap of the A-type liquid outlet device with one suitable for disinfectant, the modified A-type liquid outlet device had an appropriate and stable liquid output, a suitable liquid output distance and a suitable pressing feel. After user A used the modified A-type liquid outlet device, no liquid dripped from the liquid outlet hole of the end cap.

[0067] Among them, the terms "upper" and "lower" are used to describe the relative position relationship of each structure in the accompanying drawings, which is only for the convenience of description and is not used to limit the scope of implementation of the present application. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of the present application without substantially changing the technical content.

[0068] It should be noted that: in this application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0069] In addition, in this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An end cap for a dispensing pump, characterized in that: The end cap includes a housing and a flow divider connected to each other; The shell has a liquid inlet hole and a concentrating channel, the concentrating channel has a first end and a second end that are oppositely arranged, and the first end of the concentrating channel is in communication with the liquid inlet hole; The flow dividing member is formed with a plurality of flow dividing channels and a plurality of liquid outlet holes, and the plurality of flow dividing channels are connected between the second end of the concentrating channel and the plurality of liquid outlet holes; The ratio of the sum of the cross-sectional areas of the plurality of diversion channels to the cross-sectional area of ​​the second end of the concentrating channel is between 0.1 and 1.

5.

2. The end cap according to claim 1, characterized in that: The ratio of the sum of the cross-sectional areas of the plurality of diversion channels to the cross-sectional area of ​​the second end of the concentrating channel is between 0.2 and 0.9; And / or, the plurality of flow diversion channels are connected to the plurality of liquid outlet holes in a one-to-one correspondence.

3. The end cap according to claim 1 or 2, characterized in that: The housing and the flow divider are an integral part made by an integral molding process; Alternatively, the shell and the diverter are assembled separately to form the end cap.

4. The end cap according to claim 1 or 2, characterized in that: The equivalent diameter of the cross section of the diversion channel is less than 2 mm.

5. The end cap according to claim 4, characterized in that: The equivalent diameter of the cross section of the diversion channel is between 0.06 mm and 0.2 mm.

6. The end cap according to claim 1 or 2, characterized in that: The length of the diversion channel is not less than 2 mm.

7. The end cap according to claim 6, characterized in that: The length of the diversion channel is between 2 mm and 10 mm.

8. The end cap according to claim 1 or 2, characterized in that: One end of the flow-dividing channel away from the concentrating channel is inclined downward.

9. A dispensing pump, characterized in that: It comprises a guide tube, a cover body and an end cap as described in any one of claims 1 to 8, wherein the guide tube passes through the cover body, the liquid inlet hole of the end cap is connected to the guide tube, and the end cap is slidably arranged on the guide tube.

10. A liquid discharge device, characterized in that: It includes a shell and a dispensing pump as described in claim 9, wherein the shell has an opening and an inner cavity connected to the opening, the cover body covers the opening of the shell, at least a portion of the guide tube of the dispensing pump is inserted into the inner cavity of the shell, and at least a portion of the guide tube of the dispensing pump is located on the outside of the shell and is connected to the end cap of the dispensing pump.

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