Foam pump

Abstract

A foam pump comprises a liquid outlet pipe, a pressing head, a pump body connector, a pump body, a lock cover, a main column, an auxiliary column, a core column, a spring, a large piston, a small piston, a guide seat, a ball and a liquid suction pipe, a guide hole of a sliding seat of the large piston is in sliding fit and sealed with a liquid-gas cavity, and a cylindrical air valve element is in sliding fit and sealed with a valve shell; the head of the core column is matched with the liquid outlet cavity, the rod part is located in the auxiliary liquid pipe, the kidney-shaped connecting rod is in sliding fit with the sliding sleeve, and the liquid valve core part is matched with the liquid valve core seat; the liquid outlet cavity is inserted into the liquid-gas cavity; the guide seat is arranged on a bottom plate of the air cavity, an auxiliary liquid pipe of the auxiliary column is in sliding fit with the barrel part, and a piston body is in sliding fit with the liquid cavity; the annular inserting part is inserted into an air cavity 41, the upper end of the air cavity is attached to the bottom plate of the cover body, and the clasp is buckled with the annular edge plate; and the spring is matched with the annular seat plate and the circular stop disc. Air and liquid are mixed at the top of the liquid-gas cavity of the main column, pressurized through the liquid-gas mixing hole and sprayed, the performance of foam is achieved, and the moving speed is high.

Description

Technical Field

[0001] The utility model relates to the technical field of foam pumps, in particular to a foam pump. Background Art

[0002] The current state of the art, according to Chinese Patent No. 202222641739.3, describes a foam pump comprising a pump body, a valve stem assembly, and a waterproof cover. The pump body is provided with a first accommodating chamber, with mounting holes and a liquid inlet passage formed at opposite ends of the pump body. The valve stem assembly is disposed in the first accommodating chamber, with one end of the valve stem assembly movably inserted into the mounting hole and the other end inserted into the liquid inlet passage. The valve stem assembly is provided with a piston, which is positioned within the first accommodating chamber and sealingly abuts against the sidewall of the first accommodating chamber to separate the portion of the first accommodating chamber near the liquid inlet passage to form an air chamber. The waterproof cover is disposed on the periphery of the valve stem assembly and located on the side of the piston near the mounting hole. The waterproof cover has a second accommodating chamber, with the piston's end near the waterproof cover inserted into the second accommodating chamber. A ventilation structure is provided on the sidewall of the piston near the waterproof cover, and the ventilation structure is located within the axial projection of the second accommodating chamber. The problem is poor foaming performance. Utility Model Content

[0003] The purpose of the utility model is to provide a foam pump which has the characteristics of high foaming performance and rapid liquid discharge.

[0004] The utility model is realized as follows: a foam pump, which is special in that: a foam pump, characterized in that: it includes a liquid outlet pipe, a pressing head, a pump body joint, a pump body, a locking cover, a main column, a secondary column, a core column, a spring, a large piston, a small piston, a guide seat, a ball and a liquid pipette,

[0005] The head includes a head shell with a lower opening and a vertical liquid outlet pipe.

[0006] The pump body joint includes an external thread head, a flange and an interface pipe.

[0007] The pump body includes an air cavity with an annular edge plate, a liquid cavity, a one-way valve seat and a liquid suction pipe joint. The diameter of the air cavity is larger than the diameter of the liquid cavity. The ball is arranged on the one-way valve seat.

[0008] The locking cover comprises a cover body with an upper opening, a guide sleeve, an axial air hole of the cover, an annular plug-in portion and a buckle hook;

[0009] The main column includes a main column tube, a valve shell with a lower opening, a liquid-gas cavity with a lower opening, and a liquid-gas mixing hole. The valve shell is provided with an air hole, and the liquid-gas cavity is provided with a top radial air groove, an axial air groove, and a bottom radial air groove.

[0010] The auxiliary column includes a liquid outlet cavity, a circular stop disc and an auxiliary liquid pipe;

[0011] The core column includes the head, the rod, the waist-shaped connecting rod and the liquid valve core.

[0012] The large piston comprises a piston body, a radial annular plate, a cylindrical air valve core and a sliding seat with a guide hole. The guide seat is provided with an axial air hole and a radial air hole which are connected.

[0013] The small piston comprises a piston body with a lower opening, a sliding sleeve and a liquid valve core seat arranged on the top plate of the piston body;

[0014] The guide seat comprises a cylindrical portion and an annular seat plate;

[0015] The liquid outlet pipe extends into the head shell and is connected to the longitudinal liquid outlet pipe; the external thread head is screwed with the longitudinal liquid outlet pipe, and the flange cooperates with the longitudinal liquid outlet pipe to stop; the main column pipe is inserted into the interface pipe of the pump body joint, and the valve shell and the lower end of the pump body joint are fitted; the interface pipe of the pump body joint and the guide sleeve of the lock cover are slidably matched, and the top of the valve shell and the guide sleeve are stopped; the guide hole of the sliding seat of the large piston and the liquid-gas cavity are slidably matched and sealed, and the cylindrical air valve core and the valve shell are slidably matched and sealed; the sliding sleeve of the small piston is inserted into the auxiliary liquid pipe of the auxiliary column and fixed, and the head of the core column and The liquid outlet cavity is matched, the rod is located in the auxiliary liquid pipe, the waist-shaped connecting rod and the sliding sleeve are slidably matched, the liquid valve core is located in the piston body and matched with the liquid valve core seat; the liquid outlet cavity of the auxiliary column is inserted into the liquid-gas cavity of the main column; the guide seat is arranged on the bottom plate of the air cavity, the auxiliary liquid pipe of the auxiliary column is slidably matched with the cylinder part, and the piston body is slidably matched with the liquid cavity; the annular plug-in part is inserted into the air cavity 41, the upper end of the air cavity is fitted with the bottom plate of the cover body, and the buckle and the annular edge plate are buckled; the spring is matched with the annular seat plate and the circular stop disk; the head shell is slidably matched with the cover body.

[0016] Preferably, a sub-air cavity is provided at the bottom of the air cavity, and the diameter of the sub-air cavity is smaller than the diameter of the air cavity;

[0017] The annular seat plate of the guide seat is supported and matched with the bottom plate of the sub-air cavity.

[0018] Preferably, it further comprises a network connection, which is arranged in the upper end of the main column tube.

[0019] Preferably, the net includes a cylindrical cavity, a top net and a bottom net.

[0020] Preferably, an axial protrusion is provided on the outer circumferential surface of the cover body of the locking cover, and the axial protrusion is in sliding engagement with the head shell.

[0021] Preferably: it also includes a cylindrical support seat, a base, a nut and a tooth tube,

[0022] The cylindrical support seat includes a cylindrical support body provided at the upper end, an inner annular sealing seat, a lower annular sealing seat and a lower inner threaded interface;

[0023] The lower internal thread interface is inserted into the base, the upper end of the tooth tube is screwed with the lower internal thread interface, and the nut is provided on the tooth tube and is opposite to the base; the air cavity of the pump body is sealed with the inner annular sealing seat and the lower annular sealing seat, the liquid cavity is located in the tooth tube, and the suction tube extends out of the tooth tube; the cylindrical support seat is supported and matched with the annular edge plate.

[0024] Preferably, the lower end of the tooth tube is provided with an internal thread which is threadedly connected to the bottle mouth of the soap bottle.

[0025] Preferably, the pump body rotates relative to the cylindrical support seat.

[0026] The utility model relates to a foam pump, in which air and liquid are mixed at the top of the liquid-gas cavity of the main column, pressurized and sprayed through the liquid-gas mixing hole, so as to achieve the performance of foam and move quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional view of the present utility model.

[0028] Figure 2 yes Figure 1 A partial enlarged view of .

[0029] Figure 3 This is one of the three-dimensional exploded views of the present invention.

[0030] Figure 4 This is the second three-dimensional exploded view of the present invention.

[0031] Figure 5 This is the third exploded view of the present invention.

[0032] Figure 6 It is a three-dimensional diagram of the present utility model. DETAILED DESCRIPTION

[0033] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0035] like Figure 1As shown, a foam pump includes a liquid outlet pipe 1, a push head 2, a pump body joint 3, a pump body 4, a lock cover 5, a main column 6, a secondary column 7, a core column 8, a spring 9, a large piston 10, a small piston 11, a guide seat 12, a ball 13 and a liquid suction tube 14.

[0036] One end of the liquid outlet pipe 1 is provided with an external thread, and the suspended end is provided with a liquid outlet hole perpendicular to the axis;

[0037] The pressing head 2 includes a head shell 21 with a lower opening and a longitudinal liquid outlet pipe 22. The axis of the head shell 21 coincides with the axis of the longitudinal liquid outlet pipe 22. The pressing head 2 is made of a plastic material in one piece.

[0038] The pump body joint 3 includes an external threaded head 31, a flange 32 and an interface pipe 33.

[0039] The pump body 4 includes an air chamber 41 with an annular edge plate 411, a liquid chamber 42, a one-way valve seat 43, and a liquid suction pipe joint 44. The diameter of the air chamber 41 is larger than that of the liquid chamber 42. The one-way valve seat 43 is located at one end adjacent to the liquid chamber 42 and the liquid suction pipe joint 44. The ball 13 is located on the one-way valve seat 43.

[0040] The locking cover 5 includes a cover body 51 with an upper opening, a guide sleeve 52, an axial air hole 53 of the cover, an annular plug-in portion 54 and a hook 55;

[0041] The main column 6 includes a main column tube 61, a valve housing 62 with a lower opening, a liquid-gas chamber 63 with a lower opening, and a liquid-gas mixing hole 64. The valve housing 62 is provided with an air hole 621. The liquid-gas chamber 63 is provided with a top radial air groove 631, an axial air groove 632, and a bottom radial air groove 633. The top radial air groove 631 is connected to the liquid-gas mixing hole 64, and the top radial air groove 631, the axial air groove 632, and the bottom radial air groove 633 are connected in sequence.

[0042] The auxiliary column 7 includes a liquid outlet cavity 71, a circular stop disc 72 and an auxiliary liquid pipe 73;

[0043] The stem 8 includes a head 81, a rod 82, a waist-shaped connecting rod 83, and a liquid valve core 84. The shape of the head 81 is the same as that of the liquid outlet cavity 71, and there is a gap between the circumferential surface of the head 81 and the inner wall of the liquid outlet cavity 71. The bottom plate of the liquid outlet cavity 71 supports the head 81, and the height of the liquid outlet cavity 71 is greater than that of the head 81.

[0044] The large piston 10 includes a piston body 101, a radial annular plate 102, a cylindrical air valve core 103, and a sliding seat 104 with a guide hole. The sliding seat 104 is provided with an axial air hole 1041 and a radial air hole 1042 at the lower end, which are connected.

[0045] The small piston 11 comprises a piston body 111 with a lower opening, a sliding sleeve 112 and a liquid valve core seat 114 provided on the top plate of the piston body 111;

[0046] The guide seat 12 includes a cylindrical portion 121 and an annular seat plate 122;

[0047] The liquid outlet pipe 1 extends into the head shell 21 and is connected to the longitudinal liquid outlet pipe 22, and the external thread of the liquid outlet pipe 1 is screwed into the internal thread hole of the longitudinal liquid outlet pipe 22; the external threaded head 31 is screwed into the internal thread of the lower end of the longitudinal liquid outlet pipe 22, and the flange 32 cooperates with the longitudinal liquid outlet pipe 22 to stop; the main column pipe 61 is inserted into the interface pipe 33 of the pump body joint 3 and fixed, and the top plate of the valve housing 62 is fitted with the lower end of the pump body joint 3; the interface pipe 33 of the pump body joint 3 is slidably matched with the guide sleeve 52 of the lock cover 5, and the top of the valve housing 62 is stopped with the guide sleeve 52; the guide hole of the sliding seat 104 of the large piston 10 and the liquid-gas cavity 63 are slidably matched and sealed, the cylindrical air valve core 103 is slidably matched with the valve housing 62 and sealed, and the cylindrical air valve core 103 can close the air hole 621 on the valve housing 62; the sliding sleeve 112 of the small piston 11 is inserted into the auxiliary liquid pipe 7 of the auxiliary column 7 3 and fixed, the head 81 of the core column 8 cooperates with the liquid outlet cavity 71, the rod 82 is located in the auxiliary liquid pipe 73, the waist-shaped connecting rod 83 and the sliding sleeve 112 slide together, the liquid valve core 84 is located in the piston body 111 and cooperates with the liquid valve core seat 114; the liquid outlet cavity 71 of the auxiliary column 7 is inserted into the liquid-gas cavity 63 of the main column 6; the circular stop disk 72 cooperates with the lower end of the sliding seat 104; the guide seat 12 is provided on the bottom plate of the air cavity 41, the auxiliary liquid pipe 73 of the auxiliary column 7 slides with the cylindrical portion 121, the piston body 111 slides and seals with the liquid cavity 42; the annular plug-in portion 54 is inserted into the air cavity 41, the upper end of the air cavity 41 is fitted with the bottom plate of the cover body 51, the hook 55 is buckled with the annular edge plate 411; the spring 9 cooperates with the annular seat plate 122 and the circular stop disk 72; the head shell 21 slides with the cover body 51;

[0048] Figure 1 、 Figure 2 This is a view of the utility model in a static state; in the static state, the cover axial air hole 53, the air hole 621, the cylindrical air valve core 103, the axial air hole 1041, the radial air hole 1042 provided at the lower end and the air cavity 41 are connected in sequence, and the upper opening of the cover body 51 is connected to the atmosphere;

[0049] After purchasing the utility model, when using it for the first time, press the button 2, then release it, the connector 2 loses power and resets; the liquid cavity 42 enters the liquid; it is in the ready-to-use state;

[0050] In the ready-to-use state, the push button 2, pump body joint 3, main column 6, auxiliary column 7 and small piston 11 are pressed downward, the circular stop disc 72 compresses the spring 9, the circular stop disc 72 leaves the sliding seat 104, and the liquid valve core 84 leaves the liquid valve core seat 114; then the cylindrical air valve core 103 enters the valve housing 62 and closes the air hole 621; the top plate of the valve housing 62 drives the cylindrical air valve core 103 of the large piston 10, and the large piston 10 moves downward;

[0051] Liquid enters the top radial air groove 631 through the liquid chamber 42, the gap between the waist-shaped connecting rod 83 and the sliding sleeve 112, the gap between the auxiliary liquid pipe 73 and the rod portion 82, and the gap between the liquid outlet chamber 71 and the head portion 81. Simultaneously, air enters the top radial air groove 631 through the air chamber 42, the gap between the circular stop plate 72 and the sliding seat 104, the bottom radial air groove 633, and the axial air groove 632. The air and liquid mix and are compressed through the liquid-gas mixing hole 64 into the main column tube 61, passing through the pump body joint 3, the longitudinal liquid outlet pipe 22, and the liquid outlet pipe 1 to spray soap foam.

[0052] When the pressing head 2 loses power, the spring 9 pushes the pressing head 2, the pump body joint 3, the main column 6, the auxiliary column 7 and the small piston 11 upward, and then the large piston moves upward to reset. At the same time, the ball 13 leaves the one-way valve seat 43, and the liquid in the soap bottle flows into the liquid chamber 42 through the pipette 14; when the liquid in the liquid chamber 42 reaches a certain height, the ball 13 returns to the one-way valve seat 43, and the state of being ready for use is returned.

[0053] As a further improvement of the present invention: a sub-air cavity 412 is provided at the bottom of the air cavity 41 , and the diameter of the sub-air cavity 412 is smaller than the diameter of the air cavity 41 ;

[0054] The annular seat plate 122 of the guide seat 12 is supported and matched with the bottom plate of the sub-air cavity; the annular seat plate 122 is in contact with the inner wall of the sub-air cavity 412 to prevent the guide seat 12 from moving in the radial direction.

[0055] As a further improvement of the present invention: it also includes a net 15, which is arranged in the upper end of the main column tube 61;

[0056] The net comprises a cylindrical cavity, a top net and a bottom net. With such a structure, air and liquid are effectively cut and foamed.

[0057] As a further improvement of the present invention, an axial projection 511 is provided on the outer circumferential surface of the cover body 51 of the locking cover 5, and the axial projection 511 is in sliding engagement with the head shell 21. With this structure, external air can enter the cover body 51 through the gap between the cover body 51 and the head shell 21 between the axial projection 511.

[0058] As a further improvement of the present invention: it also includes a cylindrical support seat 16, a base 17, a nut 18 and a threaded tube 19,

[0059] The cylindrical support seat 16 includes a cylindrical support body 161 provided at the upper end, an inner annular sealing seat 162 provided at the upper portion, a lower annular sealing seat 163 and a lower inner threaded interface 164;

[0060] The lower internal threaded interface 164 is inserted into the base 17, and the upper end of the threaded tube 19 is threadedly engaged with the lower internal threaded interface 164. The nut 18 is located on the threaded tube 19 and faces the base 17. The air cavity 41 of the pump body 4 is sealed with the upper inner annular sealing seat 162 and the lower annular sealing seat 163. The liquid cavity 42 is located within the threaded tube 19, and the liquid pipe 14 extends out of the threaded tube 19. The cylindrical support body 161 is supported and engaged by the annular edge plate 411. The hook portion of the clasp faces the cylindrical support body 161. The foam pump and cylindrical support base 16 are removable.

[0061] The lower end of the tooth tube 19 is provided with an internal thread that is threadedly connected to the bottle mouth 201 of the soap bottle 20.

[0062] The pump body 4 rotates relative to the cylindrical support seat 16; an annular groove is provided in the upper inner annular sealing seat 162, and a silicone ring is provided in the annular groove;

[0063] The silicone ring is arranged in the annular groove, and the silicone ring closely cooperates with the air cavity of the pump body to achieve positioning; rotation overcomes the friction between the air cavity and the silicone ring.

[0064] Throughout this specification, reference to terms such as "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 that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0065] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A foam pump, characterized in that: It includes a liquid outlet pipe, a push button, a pump body connector, a pump body, a locking cover, a main column, a secondary column, a core column, a spring, a large piston, a small piston, a guide seat, a ball and a suction tube. The head includes a head shell with a lower opening and a vertical liquid outlet pipe. The pump body joint includes an external thread head, a flange and an interface pipe. The pump body includes an air cavity with an annular edge plate, a liquid cavity, a one-way valve seat and a liquid suction pipe joint. The diameter of the air cavity is larger than the diameter of the liquid cavity. The ball is arranged on the one-way valve seat. The locking cover comprises a cover body with an upper opening, a guide sleeve, an axial air hole of the cover, an annular plug-in portion and a buckle hook; The main column includes a main column tube, a valve shell with a lower opening, a liquid-gas cavity with a lower opening, and a liquid-gas mixing hole. The valve shell is provided with an air hole, and the liquid-gas cavity is provided with a top radial air groove, an axial air groove, and a bottom radial air groove. The auxiliary column includes a liquid outlet cavity, a circular stop disc and an auxiliary liquid pipe; The core column includes the head, the rod, the waist-shaped connecting rod and the liquid valve core. The large piston comprises a piston body, a radial annular plate, a cylindrical air valve core and a sliding seat with a guide hole. The guide seat is provided with an axial air hole and a radial air hole which are connected. The small piston comprises a piston body with a lower opening, a sliding sleeve and a liquid valve core seat arranged on the top plate of the piston body; The guide seat comprises a cylindrical portion and an annular seat plate; The outlet pipe extends into the head shell and is connected to the longitudinal outlet pipe; the external thread head is screwed with the longitudinal outlet pipe, and the flange cooperates with the longitudinal outlet pipe to stop; the main column pipe is inserted into the interface pipe of the pump body joint, and the valve shell and the lower end of the pump body joint are fitted; the interface pipe of the pump body joint and the guide sleeve of the lock cover are slidably matched, and the top of the valve shell and the guide sleeve are stopped; the guide hole of the sliding seat of the large piston and the liquid-gas cavity are slidably matched and sealed, and the cylindrical air valve core and the valve shell are slidably matched and sealed; the sliding sleeve of the small piston is inserted into the auxiliary liquid pipe of the auxiliary column and fixed, and the head of the core column is fixed with the outlet The liquid cavity is matched, the rod is located in the auxiliary liquid pipe, the waist-shaped connecting rod and the sliding sleeve are slidably matched, the liquid valve core is located in the piston body and is matched with the liquid valve core seat; the liquid outlet cavity of the auxiliary column is inserted into the liquid-gas cavity of the main column; the guide seat is arranged on the bottom plate of the air cavity, the auxiliary liquid pipe of the auxiliary column is slidably matched with the cylinder part, and the piston body is slidably matched with the liquid cavity; the annular plug-in part is inserted into the air cavity (41), the upper end of the air cavity is fitted with the bottom plate of the cover body, and the buckle is buckled with the annular edge plate; the spring is matched with the annular seat plate and the circular stop plate; the head shell is slidably matched with the cover body.

2. A foam pump according to claim 1, characterized in that: It also includes a network, which is arranged in the upper end of the main column tube.

3. A foam pump according to claim 2, characterized in that: The netcom includes a cylindrical cavity, a top net and a bottom net.

4. A foam pump according to claim 1, characterized in that: An axial protrusion is provided on the outer circumferential surface of the cover body of the locking cover, and the axial protrusion is slidably matched with the head shell.

5. The foam pump according to claim 1, characterized in that: A sub-air cavity is provided at the bottom of the air cavity, and the diameter of the sub-air cavity is smaller than the diameter of the air cavity; The annular seat plate of the guide seat is supported and matched with the bottom plate of the sub-air cavity.

6. A foam pump according to claim 1, 2, 3, 4 or 5, characterized in that: It also includes a cylindrical support seat, a base, a nut and a threaded tube. The cylindrical support seat includes a cylindrical support body provided at the upper end, an inner annular sealing seat, a lower annular sealing seat and a lower inner threaded interface; The lower internal thread interface is inserted into the base, the upper end of the tooth tube is screwed with the lower internal thread interface, and the nut is provided on the tooth tube and is opposite to the base; the air cavity of the pump body is sealed with the upper inner annular sealing seat and the lower annular sealing seat, the liquid cavity is located in the tooth tube, and the suction tube extends out of the tooth tube; the cylindrical support seat is supported and matched with the annular edge plate.

7. A foam pump according to claim 6, characterized in that: The lower end of the tooth tube is provided with an internal thread which is threadedly connected to the bottle mouth of the soap bottle.

8. The foam pump according to claim 6, characterized in that: The pump body rotates relative to the cylindrical support seat.

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