Pump head

Abstract

The utility model relates to the technical field of pump heads, in particular to a pump head which comprises a pump body shell and a pump body assembly, the pump body shell is hollow and through, openings are formed in the two ends of the pump body shell, and the pump body assembly is inserted into the pump body shell and comprises a pressing head, a pump rod, a pressing head connecting rod, a piston sleeve, a plastic elastic piece and a plastic ball. The lower end of the pump rod is connected with the upper end of the plastic elastic piece, the upper end of the pump rod is connected with the lower end of the pressing head connecting rod, the pump rod is sleeved with the piston sleeve, and the upper end of the pressing head connecting rod penetrates out of the opening in the upper end of the pump body shell and is connected with the pressing head. According to the pump head, the plastic elastic piece and the plastic ball replace a rigid spring and a rigid ball in an existing pump head structure, environmental protection is facilitated, and convenience is brought to recycling work.

Description

TECHNICAL FIELD

[0001] The utility model relates to pump head technical field especially is involved in a pump head. BACKGROUND

[0002] Many existing liquid containers are pumped out of liquid by using press pump head, and it is very convenient to use, but the manufacturing material of the existing pump head is mostly plastic, but the spring and the ball in the pump head are rigid structure, when the liquid in the liquid container is used up and discarded, the user will not disassemble the pump head, take out the spring and the ball and separate them from other pump head structure, therefore many pump heads are directly discarded or recycled, the direct discarding will affect environmental health and is not conducive to environmental protection, the pump head recycled has large workload of disassembling the pump head to separate the spring and the ball, consumes a lot of manpower and material resources and affects the efficiency of recycling work. SUMMARY

[0003] The utility model aims at providing a technical scheme which can solve the above problems.

[0004] A pump head, comprising a pump body shell and a pump body assembly, the pump body shell is hollow through and has openings at both ends, the pump body assembly is inserted in the pump body shell, the pump body assembly comprises a pressing head, a pump rod, a pressing head connecting rod, a piston sleeve, a plastic elastic piece and a plastic ball, the plastic elastic piece is hollow through and has openings at both ends, the lower end of the pump rod is connected with the upper end of the plastic elastic piece, the upper end of the pump rod is connected with the lower end of the pressing head connecting rod, the piston sleeve is sleeved on the pump rod, the upper end of the pressing head connecting rod is inserted in the first liquid flow channel and connected with the pressing head, and the lower end opening of the pump body shell is closed by the plastic ball.

[0005] As a further scheme of the utility model, the pressing head comprises a pressing connecting part and a nozzle connected with each other, the first liquid flow channel in communication with the nozzle is arranged in the pressing connecting part, the upper end of the pressing head connecting rod is inserted in the first liquid flow channel, the second liquid flow channel in communication with the first liquid flow channel is arranged in the pressing head connecting rod, the upper end of the pump rod is inserted in the second liquid flow channel, the third liquid flow channel in communication with the second liquid flow channel is arranged in the pump rod, the transverse through hole in communication with the third liquid flow channel is arranged on the surface of the pump rod, the lower end of the pump rod is provided with a groove, the cross section shape of the groove is in the shape of a Chinese character "K", the groove has a first groove section and a second groove section, the upper end of the plastic elastic piece abuts against the groove wall of the first groove section, and the surface of the pump rod is further provided with a liquid outlet in communication with the second groove section.

[0006] As a further scheme of the utility model: the inner wall of the pump body shell is provided with an anti-backflow lip in a ring shape below the position of the plastic ball, the cross-sectional shape of the anti-backflow lip is in a funnel shape, the small-diameter end of the anti-backflow lip faces the lower end opening of the pump body shell, the diameter of the small-diameter end of the anti-backflow lip is smaller than the diameter of the plastic ball, and the diameter of the large-diameter end of the anti-backflow lip is larger than the diameter of the plastic ball.

[0007] As a further scheme of the utility model: the pump body assembly further comprises a gasket cover, the gasket cover seals the lower end opening of the elastic member, a liquid inlet is formed in the gasket cover and communicates with the inside of the plastic elastic member, and the inner wall of the pump body shell is provided with a limiting boss in a ring shape below the position of the gasket cover.

[0008] As a further scheme of the utility model: the plastic elastic member has a wall body and a cavity enclosed by the wall body, and the cross-sectional shape of the wall body is in a corrugated shape.

[0009] Compared with the prior art, the utility model has the beneficial effects that: the pump head provided by the utility model replaces the rigid spring and the rigid ball in the existing pump head structure with the plastic elastic member and the plastic ball, is beneficial to environmental protection, and brings convenience for recycling work.

[0010] The additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying the creative labor.

[0012] Fig. 1 It is the structure schematic view of the utility model.

[0013] Fig. 2 It is another structure schematic view of the utility model.

[0014] Fig. 3 It is the sectional structure schematic view of the utility model.

[0015] Fig. 4 It is Fig. 3 The enlarged view of the A part of the utility model.

[0016] Fig. 5 It is the gasket cover structure schematic view of the utility model.

[0017] In the figure: 1, pump body shell, 11, anti-backflow lip, 12, limiting boss, 2, pump body assembly, 21, pressing head, 22, pump rod, 23, pressing head connecting rod, 24, piston sleeve, 25, plastic elastic piece, 26, plastic ball, 27, gasket, 211, pressing connecting part, 212, nozzle, 213, first liquid flow channel, 221, third liquid flow channel, 222, transverse through hole, 223, groove, 224, liquid outlet, 225, first rod section, 226, second rod section, 2231, first slot section, 2232, second slot section, 231, second liquid flow channel, 251, wall body, 252, cavity, 271, liquid inlet. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0019] Please refer to Figs. 1-5 In the embodiments of the present application, a pump head comprises a pump body shell 1 and a pump body assembly 2. The pump body shell 1 is hollow and has openings at both ends. The pump body assembly 2 is inserted into the pump body shell 1. The pump body assembly 2 comprises a pressing head 21, a pump rod 22, a pressing head connecting rod 23, a piston sleeve 24, a plastic elastic piece 25 and a plastic ball 26. The plastic elastic piece 25 is hollow and has openings at both ends. The lower end of the pump rod 22 is connected to the upper end of the plastic elastic piece 25. The upper end of the pump rod 22 is connected to the lower end of the pressing head connecting rod 23. The piston sleeve 24 is sleeved on the pump rod 22. The upper end of the pressing head connecting rod 23 is connected to the pressing head 21 and extends out of the upper end opening of the pump body shell 1. The plastic ball 26 closes the lower end opening of the pump body shell 1. The pump head provided by the present application replaces the rigid spring and the rigid ball in the existing pump head structure with the plastic elastic piece 25 and the plastic ball 26. The plastic elastic piece 25 and the plastic ball 26 are made of plastic, which is beneficial to environmental protection. After recycling, they do not need to be disassembled and separated, but can be directly recycled and utilized, saving manpower and resources and improving the efficiency of recycling work and bringing convenience to recycling work.

[0020] The pressing head 21 includes a pressing connection part 211 and a nozzle 212 connected together. The pressing connection part 211 has a first liquid flow channel 213 communicating with the nozzle 212. The upper end of the pressing head connecting rod 23 is inserted into the first liquid flow channel 213. The pressing head connecting rod 23 has a second liquid flow channel 231 communicating with the first liquid flow channel 213. The upper end of the pump rod 22 is inserted into the second liquid flow channel 231. The pump rod 22 has a second liquid flow channel 231. The pump rod 22 has a third liquid flow channel 221, and a transverse through hole 222 communicating with the third liquid flow channel 221 is provided on the surface of the pump rod 22. The lower end of the pump rod 22 has a groove 223 with a convex cross-sectional shape. The groove 223 has a first groove segment 2231 and a second groove segment 2232. The upper end of the plastic elastic element 25 abuts against the groove wall of the first groove segment 2231. The surface of the pump rod 22 also has a liquid outlet 224 communicating with the second groove segment 2232.

[0021] The outer diameter of the pressing head connecting rod 23 is larger than the inner diameter of the piston sleeve 24. The pump rod 22 includes a first rod segment 225 and a second rod segment 226 connected to each other. The outer diameter of the first rod segment 225 is smaller than the outer diameter of the second rod segment 226. A transverse through hole 222 and a third liquid flow channel 221 are provided on the first rod segment 225. The piston sleeve 24 is sleeved on the first rod segment 225. The outer diameter of the first rod segment 225 is smaller than the inner diameter of the piston sleeve 24. A groove 223 is provided on the second rod segment 226. The outer diameter of the second rod segment 226 is larger than the inner diameter of the piston sleeve 24. In this way, liquid can enter the transverse through hole 222 through the gap between the piston sleeve 24 and the first rod segment 225.

[0022] An annular anti-backflow lip 11 is provided on the inner wall of the pump body housing 1 below the plastic ball 26. The anti-backflow lip 11 has a funnel-shaped cross-section. The small-diameter end of the anti-backflow lip 11 opens towards the lower end of the pump body housing 1. The diameter of the small-diameter end of the anti-backflow lip 11 is smaller than the diameter of the plastic ball 26, and the diameter of the large-diameter end of the anti-backflow lip 11 is larger than the diameter of the plastic ball 26. In this way, the plastic ball 26 and the anti-backflow lip 11 work together to effectively prevent liquid backflow.

[0023] The pump body assembly 2 also includes a gasket 27, which closes the lower opening of the elastic element. The gasket 27 has an inlet 271 that communicates with the inside of the plastic elastic element 25. The inner wall of the pump body housing 1 is provided with an annular limiting boss 12 located below the gasket 27. The limiting boss 12 ensures that the bottom of the plastic elastic element 25 is supported when it is pressed, making it more stable and safe.

[0024] The plastic elastic element 25 has a wall 251 and a cavity 252 formed by the wall 251. The cross-sectional shape of the wall 251 is corrugated, which gives the plastic elastic element 25 good elastic deformation capability.

[0025] The working principle of the utility model is: when using, the pump body shell 1 is arranged in the container bottle opening, the lower end of the pump body shell 1 extends into the container, and the connecting mode of the pump body shell 1 and the container bottle opening can be screw connection, or clamping, or integrally formed fixed connection.

[0026] Pressing liquid: press the pressing head 21 downward, the pressing head 21 is subjected to downward force, extrudes the plastic elastic element 25 downward to move and generate deformation through the pump rod 22 and the pressing head connecting rod 23, so that the space inside the plastic elastic element 25 becomes smaller, the liquid in the plastic elastic element 25 is pressed into the inside of the pump body shell 1 from the liquid outlet 224, the liquid in the inside of the pump body shell 1 flows into the third liquid flow channel 221 from the transverse through hole 222, the liquid in the third liquid flow channel 221 is sprayed from the nozzle 212 through the second liquid flow channel 231 and the first liquid flow channel 213, and the liquid is completed.

[0027] Releasing liquid suction: after the liquid discharge process is completed, the pressing head 21 is released, the plastic elastic element 25 rebounds due to elastic force, drives the pump rod 22 and the pressing head connecting rod 23 to move upward, the pressing head 21 is also driven to move upward, the plastic elastic element 25 rebounds due to elastic force, the pressure in the inside of the plastic elastic element 25 increases, a pressure difference is generated, the plastic ball 26 is moved upward, the plastic ball 26 is separated from the anti-backflow lip 11, and the liquid in the inside of the container is also entered into the plastic elastic element 25 through the liquid inlet 271 under the action of the pressure difference.

[0028] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiments should be regarded as exemplary and non-restrictive, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model.

Claims

1. A pump head, characterized by The utility model relates to a pump body assembly and a pump body shell. The pump body assembly comprises a pressing head, a pump rod, a pressing head connecting rod, a piston sleeve, a plastic elastic piece and a plastic ball. The pressing head comprises a pressing connecting part and a nozzle connected with each other.

2. A pump head as claimed in claim 1, characterised in that: The first liquid flow channel is arranged in the pressing connecting part and is communicated with the nozzle.

3. A pump head as claimed in claim 2, wherein: The second liquid flow channel is arranged in the pressing head connecting rod and is communicated with the first liquid flow channel.

4. A pump head as claimed in claim 3, wherein: The third liquid flow channel is arranged in the pump rod and is communicated with the second liquid flow channel.

5. A pump head as claimed in claim 4, wherein: The surface of the pump rod is provided with a transverse through hole communicated with the third liquid flow channel. The lower end of the pump rod is provided with a groove. The cross-sectional shape of the groove is in the shape of a Chinese character "Ku". The groove has a first groove section and a second groove section. The upper end of the plastic elastic piece is abutted with the groove wall of the first groove section. The surface of the pump rod is further provided with a liquid outlet communicated with the second groove section. The inner wall of the pump body shell is provided with an anti-backflow lip in the position below the plastic ball. The cross-sectional shape of the anti-backflow lip is in the shape of a funnel. The small-diameter end of the anti-backflow lip faces the lower end opening of the pump body shell. The diameter of the small-diameter end of the anti-backflow lip is smaller than the diameter of the plastic ball. The diameter of the large-diameter end of the anti-backflow lip is larger than the diameter of the plastic ball. The pump body assembly further comprises a gasket. The gasket seals the lower end opening of the elastic piece. The gasket is provided with a liquid inlet communicated with the inside of the plastic elastic piece. The inner wall of the pump body shell is provided with a limiting boss in the position below the gasket. The plastic elastic piece has a wall body and a cavity enclosed by the wall body. The cross-sectional shape of the wall body is in the shape of a corrugation.

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