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 invention relates to the technical field of foam pumps, and in particular to a foam pump. Background Art

[0002] At present, the existing technology, Chinese patent 202222641739.3, a foam pump, including a pump body, a valve stem assembly and a waterproof cover, the pump body is provided with a first accommodating chamber, and the two opposite ends of the pump body are provided with a mounting hole and a liquid inlet channel connected to the first accommodating chamber; the valve stem assembly is provided in the first accommodating chamber, and one end of the valve stem assembly is movably inserted in the mounting hole, and the other end is inserted in the liquid inlet channel, the valve stem assembly is provided with a piston, the piston is located in the first accommodating chamber and is sealed against the side wall of the first accommodating chamber to separate the part of the first accommodating chamber close to the liquid inlet channel to form an air cavity; the waterproof cover is provided on the periphery of the valve stem assembly and is located on the side of the piston close to the mounting hole, the waterproof cover has a second accommodating chamber, one end of the piston close to the waterproof cover is inserted in the second accommodating chamber, and a ventilation structure is provided on one side wall of the piston close to the waterproof cover, and the ventilation structure is located within the axial projection range of the second accommodating chamber. The problem is: poor foam performance. Summary of the invention

[0003] The object of the present invention is to provide a foam pump which has the characteristics of high foam performance and rapid liquid discharge.

[0004] The present invention is implemented as follows: a foam pump, which is particularly characterized in that: a foam pump, characterized in that: it includes a liquid outlet pipe, a push head, a pump body joint, a pump body, a lock 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 suction tube,

[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 gas groove, an axial gas groove and a bottom radial gas groove;

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

[0011] The core column includes a head, a rod, a waist-shaped connecting rod and a 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, wherein 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 cylinder 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 is fitted with the lower end of the pump body joint; the interface pipe of the pump body joint is slidably matched with the guide sleeve of the lock cover, and the top of the valve shell is matched with the guide sleeve to stop; 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 is slidably matched with the valve shell 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 guide sleeve of the lock cover. The liquid outlet cavity cooperates, 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 cooperates 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 and the cylinder part are slidably matched, and the piston body and the liquid cavity are slidably matched; 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 hook and the annular edge plate are buckled; the spring cooperates with the annular seat plate and the circular stop plate; the head shell and the cover body are slidably matched.

[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 also includes 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 lock cover, and the axial protrusion is slidably matched 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 comprises a cylindrical support body arranged 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 arranged on the tooth tube and 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 invention discloses 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 at a fast speed. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0031] Figure 5 It is three-dimensional exploded view of the present invention.

[0032] Figure 6 It is a perspective view of the present invention. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] 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 a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of 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.

[0035] like Figure 1As shown, a foam pump comprises 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 comprises a head shell 21 with a lower opening and a vertical liquid outlet pipe 22, the axis of the head shell 21 coincides with the axis of the vertical 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 thread head 31, a flange 32 and an interface pipe 33.

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

[0040] The lock cover 5 comprises 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 buckle hook 55;

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

[0042] The auxiliary column 7 includes a liquid outlet cavity 71, a circular stop plate 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 the height of the head 81.

[0044] The large piston 10 comprises 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 and connected to each other.

[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 arranged 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 with the internal thread hole of the longitudinal liquid outlet pipe 22; the external thread head 31 is screwed with 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 shell 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 shell 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 shell 62 and sealed, and the cylindrical air valve core 103 can close the air hole 621 on the valve shell 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 are slidably matched, and 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 arranged on the bottom plate of the air cavity 41, the auxiliary liquid pipe 73 of the auxiliary column 7 and the cylinder part 121 are slidably matched, and the piston body 111 and the liquid cavity 42 are slidably matched and sealed; 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, and 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 and the cover body 51 are slidably matched;

[0048] Figure 1 , Figure 2 This is a view of the present invention 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 cover body 51 with an upper opening is connected to the atmosphere;

[0049] After the present invention is purchased, when it is used for the first time, the button 2 is pressed, and then released, the connector 2 loses power and resets; the liquid cavity 42 enters the liquid; and the device is in a ready-to-use state;

[0050] In the state of being ready for use, the pressing head 2, the pump body joint 3, the main column 6, the auxiliary column 7 and the small piston 11 are moved downward, the circular stop disk 72 compresses the spring 9, the circular stop disk 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] The liquid enters the top radial air groove 631 through the liquid cavity 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 82, and the gap between the liquid outlet cavity 71 and the head 81; at the same time, the air enters the top radial air groove 631 through the air cavity 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 are mixed and compressed into the main column tube 61 through the liquid-gas mixing hole 64, and then sprayed out soap foam from the liquid outlet tube 1 through the pump body joint 3 and the longitudinal liquid outlet tube 22;

[0052] The pressing head 2 loses power, and under the action of the spring 9, the pressing head 2, the pump body joint 3, the main column 6, the auxiliary column 7 and the small piston 11 move 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 enters the liquid cavity 42 through the suction tube 14; when the liquid in the liquid cavity 42 reaches a certain height, the ball 13 returns to the one-way valve seat 43, and returns to the standby state.

[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 fitted 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 includes 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 protrusion 511 is provided on the outer circumferential surface of the cover body 51 of the lock cover 5, and the axial protrusion 511 is slidably matched with the head shell 21. With such a 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 protrusions 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 comprises a cylindrical support body 161 arranged at the upper end, an inner annular sealing seat 162 arranged at the upper part, a lower annular sealing seat 163 and a lower inner thread interface 164;

[0060] The lower internal thread interface 164 is inserted into the base 17, the upper end of the tooth tube 19 is screwed with the lower internal thread interface 164, the nut 18 is arranged on the tooth tube 19 and is opposite to 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 in the tooth tube 19, and the liquid pipette 14 extends out of the tooth tube 19; the cylindrical support body 161 is supported and matched with the annular edge plate 411. The hook part of the buckle is opposite to the cylindrical support body 161; the foam pump and the cylindrical support seat 16 can be disassembled.

[0061] The lower end of the tooth tube 19 is provided with an internal thread which is threadably 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 is closely matched with the air cavity of the pump body to achieve positioning; the rotation overcomes the friction between the air cavity and the silicone ring.

[0064] 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 invention. In this specification, the schematic representation of the above terms does 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.

[0065] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit 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 head, a pump body joint, a pump body, a lock 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 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 gas groove, an axial gas groove and a bottom radial gas groove; The auxiliary column comprises a liquid outlet cavity, a circular stop plate and an auxiliary liquid pipe; The core column includes a head, a rod, a waist-shaped connecting rod and a 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, wherein 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 cylinder portion and an annular seat plate; 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 is fitted with the lower end of the pump body joint; the interface pipe of the pump body joint is slidably matched with the guide sleeve of the lock cover, and the top of the valve shell is matched with the guide sleeve to stop; 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 is slidably matched with the valve shell 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 guide sleeve of the lock cover. The liquid outlet cavity cooperates, 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 cooperates 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 and the cylinder part are slidably matched, and the piston body and the liquid cavity are slidably matched; 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 hook and the annular edge plate are buckled; the spring cooperates with the annular seat plate and the circular stop plate; the head shell and the cover body are slidably matched.

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 net-pass comprises 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 arranged on the outer circumferential surface of the cover body of the lock cover, and the axial protrusion is slidably matched with the head shell.

5. A 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 comprises a cylindrical support body arranged 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 arranged on the tooth tube and 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 with the bottle mouth of the soap liquid bottle.

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

Images