Squeeze pump

Abstract

The invention discloses an extrusion pump, comprising a shell, a flow guide tube and a plugging member. The shell has an inner cavity, the inner cavity is used to contain emulsion, the shell is provided with a liquid inlet hole and a liquid outlet hole, both ends of the liquid inlet hole and the liquid outlet hole are connected to the inner cavity and the external environment respectively. One end of the plugging member can detachably block the liquid inlet hole, and the other end can detachably block the liquid outlet hole. The shell is also provided with a receiving cavity, and the shell is connected with a flow guide tube, one end of the flow guide tube is connected to the liquid outlet hole, and the other end is connected to the inner cavity. The flow guide tube includes a storage section, the storage section is located in the receiving cavity, and the storage section is made of elastic material. At least two normally closed valves made of elastic material are arranged in the flow guide tube, and the storage section is arranged between the two normally closed valves. When the storage section is deformed by pressure, the normally closed valve is opened by air pressure or hydraulic pressure. It is easy to carry and not easy to leak emulsion, and it is not easy to spray empty when there is less emulsion in the extrusion pump, and it is easy to control the amount of emulsion sprayed each time.

Description

Technical Field

[0001] The present invention relates to the technical field of pumps, in particular to an extrusion pump. Background Art

[0002] Extrusion pumps (such as extrusion pumps for various emulsions) are widely used and are commonly used in the field of emulsions and other products to squeeze the emulsion out of the extrusion pump. However, existing extrusion pumps have the following defects:

[0003] 1. After the squeeze pump is filled with lotion and used, it is not easy to carry because it is easy to squeeze the button to spray the liquid during carrying.

[0004] 2. When there is less emulsion in the extrusion pump, it is easy to cause empty spray (that is, a large amount of air is mixed in when spraying), which is inconvenient to use.

[0005] 3. It is difficult to control the amount of lotion sprayed each time. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, the present invention aims to provide an extrusion pump which is not prone to leaking lotion and is therefore easy to carry, is not prone to empty spraying when there is less lotion in the extrusion pump, and is easy to control the amount of lotion sprayed each time.

[0007] The purpose of the present invention is achieved by the following technical solutions:

[0008] An extrusion pump, comprising a housing, a flow guide tube and a plugging member;

[0009] The shell has an inner cavity for containing emulsion, and the shell is provided with a liquid inlet hole and a liquid outlet hole, and both ends of the liquid inlet hole and the liquid outlet hole are connected to the inner cavity and the external environment respectively; one end of the blocking member can detachably block the liquid inlet hole, and the other end can detachably block the liquid outlet hole;

[0010] The shell is also provided with a accommodating cavity, and the shell is connected with a flow guide tube, one end of the flow guide tube is connected with the liquid outlet, and the other end is connected to the inner cavity; the flow guide tube includes a storage section, the storage section is located in the accommodating cavity, the storage section is made of elastic material, the storage section is used to be deformed under pressure to squeeze the emulsion in the storage section to the liquid outlet or to restore to its original state when the pressure is lost; at least two normally closed valves made of elastic material are arranged in the flow guide tube, and the storage section is arranged between the two normally closed valves; when the storage section is deformed under pressure, the normally closed valve is opened by air pressure or hydraulic pressure, and when the storage section is restored to its original state when the pressure is lost, the normally closed valve is restored to its original state and blocks the flow guide tube.

[0011] Furthermore, one end of the guide tube is connected to the liquid outlet, and the other end penetrates from the inner cavity into the accommodating cavity, and then penetrates from the accommodating cavity into the inner cavity to connect with the inner cavity.

[0012] Furthermore, the normally closed valve includes two sealing blocks that are symmetrically arranged with respect to each other, and the two sealing blocks can be pressed against each other to block the flow guide tube or move away from each other to open the flow guide tube.

[0013] Furthermore, the two sealing blocks are arranged at an angle with the axis of the guide tube, and the sealing blocks extend obliquely from the inner wall of the guide tube toward the direction in which the emulsion flows out of the inner cavity to the liquid outlet.

[0014] Furthermore, the flow guide tube also includes a first pipe section and a second pipe section, and both ends of the storage section are connected to the first pipe section and the second pipe section respectively, and the first pipe section is connected to the liquid outlet, and the second pipe section is connected to the inner cavity.

[0015] Furthermore, the first pipe segment, the storage segment and the second pipe segment are detachably connected to each other, and the first pipe segment and the second pipe segment are both made of elastic material.

[0016] Furthermore, the storage section contacts the bottom wall of the accommodating cavity of the housing and is supported by the bottom wall of the accommodating cavity.

[0017] Furthermore, the squeezing pump further comprises a button, which is slidably connected to the side wall of the accommodating cavity and contacts the storage section, and the button is used to squeeze the storage section.

[0018] Furthermore, a travel limit groove is provided on the side wall of the accommodating cavity, and the button is provided with a buckle, which is slidably connected to the travel limit groove so that the button can move in a direction close to or away from the storage section and is limited by the travel limit groove.

[0019] Furthermore, the outer shell is a cylindrical flat structure, the guide pipe is an L-shaped structure, and the first pipe section, the storage section and the second pipe section of the guide pipe constitute a vertical section and a horizontal section; the liquid outlet is arranged at the top of the outer shell, the axis of the vertical section is colinear with the axis of the liquid outlet, and the storage section is arranged at the horizontal section.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The extrusion pump of the present invention, when the storage section is filled with emulsion, each subsequent squeezing of the storage section directly acts on the emulsion, that is, each squeezing effectively acts on the emulsion and squeezes the emulsion into the external environment, thereby preventing the phenomenon of empty spraying and being very convenient to use.

[0022] 2. Moreover, since the compression degree of the storage section is directly controlled by hand, the amount of emulsion to be sprayed can be controlled manually.

[0023] 3. In addition, the liquid inlet and the liquid outlet are blocked respectively by the two ends of the blocking piece. Since the liquid inlet is not often opened, the blocking piece can be tied to the shell and is not easy to lose, thereby ensuring that the liquid outlet can be blocked, so that the extrusion pump is not easy to leak emulsion and is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the extrusion pump of the present invention;

[0025] Figure 2 for Figure 1 An exploded view of the squeeze pump is shown;

[0026] Figure 3 for Figure 1 A cross-sectional view of the extrusion pump shown;

[0027] Figure 4 for Figure 2 A cross-sectional view of the extrusion pump shown;

[0028] Figure 5 for Figure 1 A sectional view of the displacement pump from another perspective is shown.

[0029] In the figure: 1. outer shell; 11. inner cavity; 12. liquid inlet hole; 13. liquid outlet hole; 14. accommodating cavity; 15. travel limit groove; 2. flow guide tube; 21. storage section; 211. limit block; 22. first pipe section; 221. first normally closed valve; 23. second pipe section; 231. second normally closed valve; 3. blocking member; 4. button; 41. buckle. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "horizontal", "vertical", "top", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internally connected between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Figure 1-Figure 5 The extrusion pump of a preferred embodiment of the present invention comprises a housing 1, a flow guide tube 2 (see Figure 2 ) and blocking member 3.

[0034] The housing 1 has an inner cavity 11 for containing emulsion, and is provided with a liquid inlet 12 and a liquid outlet 13, both ends of which are connected to the inner cavity 11 and the external environment respectively. One end of the blocking member 3 can detachably block the liquid inlet 12, and the other end can detachably block the liquid outlet 13.

[0035] The housing 1 is also provided with a receiving cavity 14, and the housing 1 is connected with a flow guide tube 2, one end of the flow guide tube 2 is connected with the liquid outlet 13, and the other end is connected to the inner cavity 11. The flow guide tube 2 includes a storage section 21, the storage section 21 is located in the receiving cavity 14, the storage section 21 is made of elastic material, the storage section 21 is used to be deformed under pressure and squeeze the emulsion in the storage section 21 to the liquid outlet 13 or restore to its original state when pressure is lost. At least two normally closed valves made of elastic material are arranged in the flow guide tube 2, and the storage section 21 is arranged between the two normally closed valves. When the storage section 21 is deformed under pressure, the normally closed valve is opened by air pressure or hydraulic pressure, and when the storage section 21 is restored to its original state when pressure is lost, the normally closed valve is restored to its original state and blocks the flow guide tube 2.

[0036] The accommodating cavity 14 is preferably formed by the outer surface of the housing 1 being recessed toward the inner surface, and the accommodating cavity 14 is in communication with the external environment.

[0037] The working principle of the accommodating chamber 14 of the present invention is as follows:

[0038] For example: the inner cavity 11 is filled with a certain amount of emulsion (not filled with emulsion, the inner cavity 11 has a certain amount of air). Since the normally closed valve blocks the flow conduit 2, and the storage section 21 is located between the two normally closed valves, the storage section 21 is filled with air in the initial state. In the initial state, one of the two normally closed valves has emulsion on one side and air on the other side (hereinafter defined as the first normally closed valve 221), and the other normally closed valve has air on both sides (hereinafter defined as the second normally closed valve 231). When the storage section 21 begins to be squeezed, the volume in the storage section 21 becomes smaller and the air pressure increases, causing the second normally closed valve 231 to open, so that the air can escape along the flow conduit 2 to the external environment. Due to the fast gas flow rate, when the air pressure in the storage section 21 is equal to the external air pressure, the second normally closed valve 231 returns to its original state and blocks the flow conduit 2 (wherein, blocking does not require complete blocking in a strict sense, as long as the gas or liquid flow rate is reduced). After the squeezing of the storage section 21 is relaxed, the storage section 21 loses pressure and returns to its original state, so that the volume in the storage section 21 becomes larger and the air pressure decreases. At this time, the air pressure in the inner cavity 11 is greater than the air pressure in the storage section 21, so that the first normally closed valve 221 opens, and the emulsion in the inner cavity 11 is injected into the storage section 21. It can be understood that after squeezing the storage section 21 multiple times in the initial state, the storage section 21 will be filled with the emulsion. It should be further explained here that after the storage section 21 is filled at night, when the emulsion in the storage section 21 is sprayed into the external environment, when the storage section 21 returns to its original state, since the second normally closed valve 231 has been closed, it is assumed that there is a vacuum in the storage section 21, that is, even if the liquid in the inner cavity 11 is less and the air pressure is lower, its air pressure is greater than the air pressure of the vacuum of the storage section 21, so that the liquid can be added to the storage section 21, so that the storage section 21 will not generate a vacuum. Furthermore, in extreme cases, when there is a large pressure difference between the air pressure in the inner cavity 11 and the external environment, the first normally closed valve 221 and the second normally closed valve 231 are both forced to open by the atmospheric pressure to replenish air into the inner cavity 11. At this time, the storage section 21 is filled with air (like the initial state, except that there is less liquid in the inner cavity 11).

[0039] Obviously, in the squeeze pump of the present invention, when the storage section 21 is filled with the emulsion, each subsequent squeezing of the storage section 21 will directly act on the emulsion due to the squeezing force, that is, each squeezing will effectively act on the emulsion and squeeze the emulsion into the external environment, thereby preventing the phenomenon of empty spraying, and making it very convenient to use. Moreover, since the compression degree of the storage section 21 is directly controlled by hand, the amount of emulsion to be sprayed can be controlled by hand. Furthermore, the liquid inlet 12 and the liquid outlet 13 are respectively blocked by the two ends of the blocking member 3. Since the liquid inlet 12 is not often opened, the blocking member 3 can be tied to the housing 1 and is not easy to lose, thereby ensuring that the liquid outlet 13 can be blocked, so that the squeeze pump is not easy to leak the emulsion and is easy to carry.

[0040] The liquid inlet hole 12 and the liquid outlet hole 13 can be a light hole, a threaded hole, a stepped hole, etc. The plugging member 3 is preferably made of an elastic material, such as silicone, soft rubber or synthetic material, SIL silicone rubber, NBR nitrile rubber, EPDM ethylene propylene diene monomer rubber, etc., and of course, it can also be other elastic materials. Moreover, it can also be made of hard rubber or soft rubber material, and then connected to the liquid inlet hole 12 and the liquid outlet hole 13 by threading.

[0041] It can be understood that among the two normally closed valves, the first normally closed valve 221 can be located in the inner cavity 11, and the second normally closed valve 231 can be located outside the inner cavity 11. In this case, the liquid outlet 13 is located between the first normally closed valve 221 and the second normally closed valve 231; or, the second normally closed valve 221 and the second normally closed valve 231 are both located in the inner cavity 11. In this case, the first normally closed valve 221 and the second normally closed valve 231 are both located on the same side of the liquid outlet 13. That is, according to the second setting, preferably, one end of the flow guide tube 2 is connected to the liquid outlet 13, and the other end passes through the accommodating cavity 14 from the inner cavity 11, and then passes through the accommodating cavity 14 to the inner cavity 11 to connect the inner cavity 11. This setting can prevent the flow guide tube 2 from being exposed to the external environment. Furthermore, in order to strengthen the connection between the storage section 21 and the housing 1, both ends of the storage section 21 are radially protruded to form a ring-shaped limit block 211, so that when the two ends of the storage section 21 pass through the oppositely arranged side walls of the accommodating cavity 14, the limit blocks 211 at both ends can respectively abut the side walls of the accommodating cavity 14. The connection between the storage section 21 and the side wall of the accommodating cavity 14 can be sealed by threaded connection, or by covering the sealing member, or by welding, or by other conventional means.

[0042] It can be understood that when the normally closed valve (i.e., the first normally closed valve 221 and / or the second normally closed valve 231) is a sheet-like integrated structure, in order to ensure its normal opening and closing, the cross-section of the flow guide tube 2 is preferably elliptical or rectangular. In this embodiment, in order to facilitate the opening and closing of the normally closed valve and improve the effect of the normally closed valve blocking the flow guide tube 2, the cross-section of the flow guide tube 2 is preferably circular. In addition, preferably, the normally closed valve includes two sealing blocks that are symmetrically arranged, and the two sealing blocks can be pressed against each other to block the flow guide tube 2 or move away from each other to open the flow guide tube 2.

[0043] Importantly, both sealing blocks are arranged at an angle with the axis of the flow guide tube 2, and the sealing blocks extend obliquely from the inner wall of the flow guide tube 2 to the direction in which the emulsion flows out from the inner cavity 11 to the liquid outlet 13. It can be understood that the direction in which the emulsion flows out from the inner cavity 11 to the liquid outlet 13 is defined as the first direction, that is, the sealing blocks extend obliquely from the inner wall of the flow guide tube 2 to the first direction. With this arrangement, the two sealing blocks are easier to open along the first direction, but more difficult to open in the direction opposite to the first direction, so that when the storage section 21 returns to its original state, the external gas can basically not be replenished into the storage section 21, so that the emulsion in the inner cavity 11 can more easily enter the storage section 21, and it is more convenient to use.

[0044] Preferably, the flow guide tube 2 further includes a first pipe section 22 and a second pipe section 23, and the two ends of the storage section 21 are respectively connected to the first pipe section 22 and the second pipe section 23, and the first pipe section 22 is connected to the liquid outlet 13, and the second pipe section 23 is connected to the inner cavity 11. More preferably, the first pipe section 22, the storage section 21 and the second pipe section 23 are detachably connected to each other, so as to facilitate the manufacturing, processing and assembly of the flow guide tube 2; and the first pipe section 22 and the second pipe section 23 are both made of elastic material, so that the manufacturing material of the entire flow guide tube 2 and the normally closed valve (i.e., the first normally closed valve 221 and / or the second normally closed valve 231) is consistent, so that each section of the flow guide tube 2 is manufactured in one piece.

[0045] Preferably, the storage section 21 contacts the bottom wall of the accommodating chamber 14 of the housing 1 and is supported by the bottom wall of the accommodating chamber 14. This arrangement allows the emulsion to be squeezed out conveniently by squeezing the storage section 21 toward the bottom wall of the accommodating chamber 14 instead of squeezing the storage section 21 with two fingers each time.

[0046] Preferably, the squeezing pump further comprises a button 4, which is slidably connected to the side wall of the accommodating chamber 14 and contacts the storage section 21, and the button 4 is used to squeeze the storage section 21. This arrangement can make the squeezing force on the storage section 21 more uniform, the squeezing effect is better, and it is easier to control the amount of the sprayed lotion.

[0047] Furthermore, in order to facilitate the guidance and limiting of the button 4, so as to better control the button 4, a travel limiting groove 15 is provided on the side wall of the accommodating cavity 14, and the button 4 is provided with a buckle 41 (see Figure 5 ), the buckle 41 is slidably connected to the travel limit groove 15 so that the button 4 can move in a direction close to or away from the storage section 21 and is limited by the travel limit groove 15.

[0048] Preferably, the housing 1 is a cylindrical flat structure, the flow guide tube 2 is an L-shaped structure, and the first pipe section 22, the storage section 21 and the second pipe section 23 of the flow guide tube 2 form a vertical section and a horizontal section. The liquid outlet 13 is arranged at the top of the housing 1, the axis of the vertical section is colinear with the axis of the liquid outlet 13, and the storage section 21 is arranged in the horizontal section. It can be understood that the flat structure of the housing 1 makes the extrusion pump easier to hold, more comfortable to hold, and more convenient to carry. In order to match the flat structure of the housing 1, the liquid outlet 13 is arranged at the top of the housing 1.

[0049] In this embodiment, the elastic material can be silicone, soft rubber or synthetic material, SIL silicone rubber, NBR nitrile rubber, EPDM ethylene propylene diene monomer rubber, etc., or other well-known materials.

[0050] It should be mentioned here that the extrusion pump is preferably manufactured using a 3D printer, but it can also be manufactured using other well-known or conventional manufacturing technologies.

[0051] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. Extrusion pump, characterized in that: It includes a shell, a flow guide pipe and a plugging piece; The shell has an inner cavity for containing emulsion, and the shell is provided with a liquid inlet hole and a liquid outlet hole, and both ends of the liquid inlet hole and the liquid outlet hole are connected to the inner cavity and the external environment respectively; one end of the blocking member can detachably block the liquid inlet hole, and the other end can detachably block the liquid outlet hole; The shell is also provided with a receiving cavity, and the shell is connected with a flow guide tube, one end of the flow guide tube is connected with the liquid outlet, and the other end is connected to the inner cavity; the flow guide tube includes a storage section, the storage section is located in the receiving cavity, the storage section is made of elastic material, the storage section is used to be deformed under pressure to squeeze the emulsion in the storage section to the liquid outlet or to restore to its original state when pressure is lost; at least two normally closed valves made of elastic material are arranged in the flow guide tube, and the storage section is arranged between the two normally closed valves; when the storage section is deformed under pressure, the normally closed valve is opened by air pressure or hydraulic pressure, and when the storage section is restored to its original state when pressure is lost, the normally closed valve is restored to its original state to block the flow guide tube; One end of the guide tube is connected to the liquid outlet, and the other end passes from the inner cavity into the accommodating cavity, and then passes from the accommodating cavity into the inner cavity to connect with the inner cavity; The flow guide pipe also includes a first pipe section and a second pipe section, and both ends of the storage section are connected to the first pipe section and the second pipe section respectively, and the first pipe section is connected to the liquid outlet, and the second pipe section is connected to the inner cavity; The storage section contacts the bottom wall of the accommodating chamber of the housing and is supported by the bottom wall of the accommodating chamber; The outer shell is a cylindrical flat structure, the guide pipe is an L-shaped structure, and the first pipe section, the storage section and the second pipe section of the guide pipe constitute a vertical section and a horizontal section; the liquid outlet is arranged at the top of the outer shell, the axis of the vertical section is colinear with the axis of the liquid outlet, and the storage section is arranged at the horizontal section.

2. The extrusion pump according to claim 1, characterized in that: The normally closed valve comprises two sealing blocks which are symmetrically arranged with respect to each other, and the two sealing blocks can be pressed against each other to block the flow guide tube or move away from each other to open the flow guide tube.

3. The extrusion pump according to claim 2, characterized in that: The two sealing blocks are arranged at an angle with the axis of the guide tube, and the sealing blocks extend obliquely from the inner wall of the guide tube toward the direction in which the emulsion flows out of the inner cavity to the liquid outlet.

4. The extrusion pump according to claim 1, characterized in that: The first pipe section, the storage section and the second pipe section are detachably connected to each other, and the first pipe section and the second pipe section are both made of elastic material.

5. The extrusion pump according to claim 1, characterized in that: The squeezing pump further comprises a button, which is slidably connected to the side wall of the accommodating cavity and contacts the storage section, and the button is used for squeezing the storage section.

6. The extrusion pump according to claim 5, characterized in that: A travel limit groove is formed on the side wall of the accommodating cavity, and a buckle is provided on the button. The buckle is slidably connected to the travel limit groove so that the button can move in a direction close to or away from the storage section and is limited by the travel limit groove.

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