CN202277920U - A spray pump with an external spring and can be used upside down - Google Patents

Abstract

A spray pump with an external spring and capable of being used in an inverted mode comprises a spray head, a pump barrel, a thread cover, a piston support, a piston, a return spring, a suction pipe and a ball valve core, wherein a suction pipe connector is arranged at the lower portion of the pump barrel; the ball valve core is arranged on a ball valve seat on the pump barrel and is matched with the liquid outlet hole. The annular folding edge on the valve plate is matched with the window on the pump barrel. Due to the adoption of the structure, when the ball valve core is used in an inverted manner, the ball valve core and the liquid outlet hole cannot be separated; the negative pressure in the pump barrel is further increased until the sealing between the annular folding edge of the valve plate and the window of the pump barrel is opened, liquid enters the pump barrel, and the spray head sprays out the liquid; the defect that liquid cannot be sprayed when the bottle cap cannot be inverted in the prior art is overcome.

Description

A spray pump with an external spring and can be used upside down

technical field

The utility model relates to a spray pump.

Background technique

In the current prior art, a spray pump includes a nozzle, a pump barrel, a screw cap, a piston bracket, an upper connecting rod, a piston, a return spring, a suction pipe and a ball valve core. at the outlet hole of the pump barrel. The problem is that when it is used upside down, the pumping will be unstable or unable to pump.

Contents of the invention

The purpose of the utility model is to provide a spray pump with an external spring that can be used upside down, which can spray liquid when used upside down.

The utility model is achieved as follows: a spray pump with an external spring and can be used upside down, including a nozzle, a pump barrel, a screw cap, a piston bracket, a piston, a return spring, a suction pipe and a ball valve core, the lower part of the pump barrel There is a suction pipe interface, and its special feature is that it also includes a valve plate made of flexible material, a valve plate seat set at the liquid outlet hole on the inner bottom plate of the pump cylinder and a ball valve seat in the suction pipe interface. The liquid outlet hole is in the shape of truncated cone;

The valve piece includes a center piece and a base, and there are circular liquid holes arranged between the center piece and the base, the valve piece is arranged on the valve piece seat, and the center piece cooperates with the liquid outlet hole of the pump barrel; the ball valve The core is set on the ball valve seat on the pump barrel, and the ball valve core cooperates with the liquid outlet hole;

There is an annular folding edge on the circumference of the base of the valve plate;

There is a window at the junction of the pump barrel and the bottom plate of the pump barrel, and the ring-shaped edge of the valve plate is matched with the window on the pump barrel.

The spray pump with an external spring and which can be used upside down is special in that: the valve seat on the pump cylinder is an annular groove surrounding the liquid outlet hole;

The axial lower end of the base of the valve plate has an annular interface, and the annular interface fits into the annular groove.

The spray pump with an external spring and can be used upside down is special in that: the upper part of the inner wall of the annular groove has an annular protrusion, the inner wall of the annular interface has an annular protrusion, and the inner wall of the annular interface has an annular protrusion. The upper annular protrusion is located in the lower annular groove of the annular protrusion of the annular groove.

The spray pump with an external spring and can be used upside down is special in that: the ball valve seat is composed of an axial protrusion located on the inner wall of the suction pipe interface and a support point located under the axial protrusion;

The ball valve core cooperates with the liquid outlet hole and the axial protrusion, and the supporting point supports the ball valve core.

The spray pump with an external spring and can be used upside down is special in that: there is a bending part at the upper end of the piston, and the angle between the bending part and the base body is greater than or equal to 90 degrees, which is smaller than other parts of the piston. The wall thickness. Under pressure, the bending part will collapse, and when the pressure disappears, it will return to its normal state. This structure can increase the pressure of the liquid in the pump barrel of the sprayer and improve the spraying effect.

The spray pump with an external spring and can be used upside down is special in that the piston bracket is directly connected with the spray head. Compared with the existing structure, this structure reduces one connecting rod, improves the use efficiency of each part, and reduces the product cost.

The utility model is a spray pump with an external spring and can be used upside down. Due to the adoption of such a structure, when used upside down, the ball valve core and the liquid outlet cannot be separated; the negative pressure in the pump barrel is further increased until it is enough to open the valve plate. The sealing between the annular fold edge of the pump barrel and the window of the pump barrel, the liquid enters the pump barrel, and the nozzle sprays out the liquid; it overcomes the defect that the liquid cannot be sprayed out when it cannot be inverted in the prior art. Easy to use.

Description of drawings

Fig. 1 is a sectional view of the utility model.

Fig. 2 is a three-dimensional sectional view of the pump barrel of the present invention.

Fig. 3 is one of the three-dimensional views of the valve plate of the present invention.

Fig. 4 is the second perspective view of the valve plate of the present invention.

Fig. 5 is a three-dimensional sectional view of the piston of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, a spray pump with an external spring that can be used upside down includes a nozzle 1, a pump barrel 2, a screw cap 3, a piston bracket 4, a piston 5, a return spring 6, a suction pipe 7 and a ball valve core 8 , the lower part of the pump cylinder 2 has a suction pipe interface 21, and also includes a valve plate 9 made of a flexible material, a valve plate seat arranged at the liquid outlet hole 22 on the inner bottom plate of the pump cylinder 2 and a ball valve seat in the suction pipe interface, the piston The bracket 4 is directly connected with the spray head 1 .

As shown in Figure 3, the valve plate 9 includes a central plate 91 and a base 92, and there are circular liquid holes arranged between the central plate 91 and the base 92, and the valve plate 9 is arranged on the valve plate seat. The center piece 91 cooperates with the liquid outlet hole 22; the ball valve core 8 is arranged on the ball valve seat on the pump barrel 2, and the ball valve core 8 cooperates with the liquid outlet hole 22; the liquid outlet hole 22 is in the shape of a truncated cone.

As shown in FIG. 2, the valve seat is an annular groove 23 surrounding the outlet hole 22;

As shown in FIG. 4 , the axial lower end of the base 92 of the valve plate 9 has an annular interface 93 , and the annular interface 93 fits into the annular groove 23 .

The base 92 of the valve plate 9 has an annular fold 94 on its circumference;

There is a window 24 at the junction of the pump barrel 2 and the bottom plate of the pump barrel 2 , and the ring-shaped edge 94 is matched with the window 24 .

The upper part of the inner wall of the annular groove 23 has an annular protrusion, and the inner wall of the annular interface 91 has an annular protrusion, and the annular protrusion on the inner wall of the annular interface 91 is located in the annular groove 23 of the lower part of the annular protrusion of the annular groove 23 Inside.

As shown in FIG. 2 , the ball valve seat is composed of an axial protrusion 211 located on the inner wall of the suction pipe interface 21 and a supporting point 212 located at the lower part of the axial protrusion 211 ;

The ball valve core 8 cooperates with the supporting point 212 and the axial protrusion 211 .

As shown in Figure 5, the upper end of the piston 5 has a bent portion 51, the angle α between the bent plate portion 51 and the substrate is greater than or equal to 90 degrees, and the bent portion 51 is smaller than the wall thickness of other parts of the piston.

When the nozzle 1 is pressed by an external force, the nozzle 1 compresses the return spring 6 and the piston bracket 4 and the piston 5 move downward. The center piece 91 of the valve piece 9 corresponds to the liquid outlet hole 22 on the pump barrel 2, the annular edge 94 of the valve piece 9 communicates with the window 24 on the pump barrel 2, and both sealing positions are in a closed state. The pressure in the pump cylinder 2 increases, causing the bending part 51 of the piston 5 to deform and collapse, thereby opening the channel between the piston 5 and the piston bracket 4, and the air or liquid in the pump cylinder 2 passes through the center hole of the piston bracket 4, the nozzle 1 Center hole ejects at high speed. When the air or liquid pressure in the pump barrel 2 decreases, the bent part 51 on the piston 5 recovers its original shape, closing the channel between the piston 5 and the piston bracket 4 .

When the external force applied to the nozzle 1 is eliminated, the return spring 6, the nozzle 1, the compression piston 5, and the piston bracket 4 reset. At this time, the passage between the piston 5 and the piston bracket 4 is in a closed state, so the inside of the pump barrel 2 is in a negative pressure state. There are two situations at this point:

(1) When using in the forward direction, the ball valve core 8 is at the lower part of the ball valve seat, and there is no seal between the ball valve core 8 and the liquid outlet hole 22 . The center flap 91 of the valve flap 9 can be opened first; liquid enters the pump barrel.

(2) When used upside down, the ball valve core 8 rolls to the liquid outlet hole 22, and a seal is formed between the ball valve core 8 and the liquid outlet hole 22, and the ball valve core 8 and the liquid outlet hole 22 cannot be separated; the negative pressure in the pump cylinder 2 further increases Large enough to open the seal between the annular fold of the valve plate 9 and the window 24 of the pump barrel 2, and the liquid enters the pump barrel 2.

What has been described above is only the preferred implementation of the present utility model. It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principle of the utility model, which are also regarded as the protection scope of the utility model.

Claims (6)

1. A spray pump with an external spring and which can be used upside down, comprising a nozzle, a pump barrel, a screw cap, a piston bracket, a piston, a return spring, a suction pipe and a ball valve core, and the lower part of the pump barrel has a suction pipe interface, which is characterized in In that: it also includes a valve plate made of flexible material, a valve plate seat arranged at the liquid outlet hole on the inner bottom plate of the pump barrel and a ball valve seat in the suction pipe interface, the liquid outlet hole is in the shape of a truncated cone; The valve piece includes a center piece and a base, and there are circular liquid holes arranged between the center piece and the base, the valve piece is arranged on the valve piece seat, and the center piece cooperates with the liquid outlet hole of the pump barrel; the ball valve The core is set on the ball valve seat on the pump barrel, and the ball valve core cooperates with the liquid outlet hole; There is an annular folding edge on the circumference of the base of the valve plate; There is a window at the junction of the pump barrel and the bottom plate of the pump barrel, and the ring-shaped edge of the valve plate is matched with the window on the pump barrel. 2. The spray pump with an external spring and can be used upside down according to claim 1, characterized in that: the valve seat on the pump barrel is an annular groove surrounding the liquid outlet hole; The axial lower end of the base of the valve plate has an annular interface, and the annular interface fits into the annular groove. 3. A spray pump with an external spring and can be used upside down according to claim 2, characterized in that: there is an annular protrusion on the inner wall of the annular groove, and there is an annular protrusion on the inner wall of the annular interface , the annular protrusion on the inner wall of the annular interface is located in the annular groove at the lower part of the annular protrusion of the annular groove. 4. According to claim 1, 2 or 3, a spray pump with an external spring that can be used upside down is characterized in that: the ball valve seat consists of an axial protrusion located on the inner wall of the suction pipe interface and an axial protrusion located on the axial protrusion. The supporting point of the lower part is formed; The ball valve core cooperates with the liquid outlet hole and the axial protrusion, and the supporting point supports the ball valve core. 5. A spray pump with an external spring that can be used upside down according to claim 1, 2 or 3, characterized in that: the upper end of the piston has a bent part, and the angle between the bent plate part and the base body is greater than or equal to 90 degrees, the bending part is smaller than the wall thickness of other parts of the piston. 6. The spray pump with an external spring that can be used upside down according to claim 1, 2 or 3, wherein the piston bracket is directly connected to the spray head.

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