Plastic spring pressing pump

Abstract

The utility model discloses a plastic spring pressing pump which comprises a pump shell, a one-way valve is arranged in an opening in the lower portion of the pump shell, a pressing rod is inserted in an opening in the upper portion of the pump shell, a discharging channel is formed in the pressing rod, a valve element is arranged at the lower end of the pressing rod, and a piston is arranged outside the valve element in a sleeved mode. A spring seat is installed on the top of the pump shell, a plastic spring is integrally connected to the spring seat, and the plastic spring is an annular component and arranged outside the pressing rod in a sleeving mode. A pressing ring is arranged at the top of the pressing rod, and when the pressing rod moves downwards, the pressing ring correspondingly presses the plastic spring. The plastic spring comprises an upper connecting ring and at least two curved twisted strips; the upper connecting ring is relatively arranged above the spring seat, and the pressing rod is sleeved with the upper connecting ring; the lower ends of the curved twisted strips are fixedly connected with the spring seat, the upper ends of the curved twisted strips are fixedly connected with the upper connecting ring, and the curved twisted strips are annularly distributed. The pressing pump can solve the problem that the metal spring and the plastic are not easy to disassemble and separate when the pressing pump is recycled.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of packing container especially relates to a plastic spring press pump. BACKGROUND

[0002] The press type emulsion pump is mainly used in the cosmetic pump head, relies on extrusion to make the pump shell inner chamber form vacuum, and then extrudes the content in the pump shell. The spring part on the emulsion pump is mainly made of metal steel wire at present, is easy to rust and pollute the cosmetic emulsion, and in the process of entering waste recycling again in the product use, needs to disassemble and separate metal and plastic, this process procedure is complex, and the cost is big, therefore, the present stage usually adopts burning, burying and other processing measures to the waste cosmetic package, causes huge pollution to the environment. SUMMARY

[0003] The utility model discloses a plastic spring press pump, which aims to solve the problem of difficult disassembly and separation of metal springs and plastics during recycling of press pumps.

[0004] Technical scheme: in order to realize the above-mentioned purpose, a plastic spring press pump of the utility model, including the pump shell, the lower opening of the pump shell is provided with a one-way valve, the upper opening of the pump shell is inserted with a press rod, the press rod has a discharge channel, the lower end of the press rod is provided with a valve core, and the valve core is provided with a piston; the top of the pump shell is provided with a spring seat, the spring seat is integrally connected with a plastic spring, the plastic spring is an annular member and is sleeved outside the press rod; the top of the press rod is provided with a pressing ring, and the pressing ring is pressed on the plastic spring when the press rod moves down.

[0005] Further, the plastic spring comprises an upper connecting ring and at least two curved torsion bars; the upper connecting ring is arranged above the spring seat in opposition, and the upper connecting ring is sleeved outside the press rod; the lower end of the curved torsion bar is fixedly connected with the spring seat, the upper end of the curved torsion bar is fixedly connected with the upper connecting ring, and the plurality of curved torsion bars are distributed in a ring shape.

[0006] Further, a plurality of annular clamping grooves are arranged in the upper opening of the pump shell, a plurality of annular clamping blocks are arranged on the outer wall of the spring seat, the plurality of annular clamping blocks are respectively clamped into the annular clamping grooves, and the spring seat is fixedly installed on the top of the pump shell.

[0007] Further, a guide hole is formed in the spring seat, and the press rod passes through the guide hole in correspondence; the inner diameter of the guide hole is consistent with the outer diameter of the press rod, so that the guide hole can guide the press rod.

[0008] Further, a blocking ring is arranged on the outer side of the spring seat, and the blocking ring is pressed on the top end surface of the pump shell when the spring seat is installed on the top of the pump shell.

[0009] Further, the spring seat and the plastic spring are both made of POK.

[0010] Beneficial effects: The plastic spring press pump has the following beneficial effects:

[0011] 1) The plastic spring is used to replace the original metal spring wire, and the press type emulsion pump made of the plastic spring can be directly put into a crusher for plastic crushing and granulation after use, thereby saving the cost of disassembling and separating the metal and protecting the natural environment.

[0012] 2) The plastic spring and the spring seat are integrally connected, so that the plastic spring is not easy to shake, and noise caused by the spring shaking is avoided, thereby improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0013] ATTACHED Figure 1 It is a whole structure schematic view of the press pump of the utility model;

[0014] ATTACHED Figure 2 It is a structure schematic view of the spring seat and the plastic spring;

[0015] ATTACHED Figure 3 It is a structure schematic view of the press rod and the piston;

[0016] ATTACHED Figure 4 It is a structure schematic view of the one-way valve;

[0017] ATTACHED Figure 5 It is an internal structure schematic view of the press pump. DETAILED DESCRIPTION

[0018] The utility model will be further described below in combination with the drawings.

[0019] As shown in the attached Figures 1 to 5 The plastic spring press pump comprises a pump shell 1, the pump shell 1 is vertically through hollow cylinder structure.In the lower opening of the pump shell 1, a one-way valve 2 is arranged, and a press rod 3 is inserted into the upper opening of the pump shell 1, the press rod 3 is a hollow rod body, and there is a discharge channel 4 in the press rod 3, the lower end of the press rod 3 is provided with a valve core 5, and the valve core 5 is provided with a piston 6.The one-way valve 2 is closed during the downward movement of the press rod 3, a passage is formed between the valve core 5 and the piston 6, the lower end of the discharge channel 4 is opened, so that the material in the inner cavity of the pump shell 1 can be extruded along the discharge channel 4.In the process of upward movement of the press rod 3, the one-way valve 2 is opened, a seal is formed between the valve core 5 and the piston 6, the lower end of the discharge channel 4 is closed, so that the material below the pump shell 1 is sucked into the inner cavity of the pump shell 1 when the press rod 3 moves upward.

[0020] The structure of the one-way valve 2 is as shown in the attached Figure 4 and 5As shown, when the pressing rod 3 moves down, the valve block 16 at the center of the one-way valve 2 seals the lower opening of the pump housing 1. When the pressing rod 3 moves up, under the action of negative pressure, the connecting strip 17 connected to the valve block 16 will deform, thereby causing the valve block 16 to move up and open the lower opening of the pump housing 1.

[0021] The structure of the pressing rod 3 and piston 6 is shown in Figures 3 and 5. The valve core 5 has a lateral opening 18, which communicates with the discharge channel 4. When the pressing rod 3 moves downward, the piston 6 moves upward relative to the pressing rod 3, exposing the lateral opening 18 in the valve core 5, thus opening the lower end of the discharge channel 4. Conversely, when the pressing rod moves upward, the piston 6 moves downward relative to the pressing rod 3, blocking the lateral opening 18 in the valve core 5, thereby closing the lower end of the discharge channel 4.

[0022] As attached Figure 2 and 5 As shown, a spring seat 7 is installed on the top of the pump housing 1, and a plastic spring 8 is integrally connected to the spring seat 7. The plastic spring 8 is a ring-shaped component and is sleeved on the outside of the pressing rod 3. A pressure ring 9 is provided on the top of the pressing rod 3. When the pressing rod 3 moves down, the pressure ring 9 presses against the plastic spring 8. Since the original metal spring has been replaced with a plastic spring 8, the process of disassembling and separating the metal and plastic can be eliminated during the waste recycling process after the pump body is used up. In addition, in this utility model, the plastic spring 8 and the spring seat 7 are integrally connected, so the position of the plastic spring 8 is fixed. During the use of the pressing emulsion pump, the plastic spring 8 is not easy to shake, and therefore will not make noise due to the shaking of the plastic spring 8, which can improve the user experience.

[0023] As attached Figure 2 As shown, the plastic spring 8 includes an upper connecting ring 10 and at least two curved torsion bars 11. The upper connecting ring 10 is positioned above the spring seat 7 and is sleeved around the pressing rod 3. The lower end of the curved torsion bar 11 is fixedly connected to the spring seat 7, and the upper end of the curved torsion bar 11 is fixedly connected to the upper connecting ring 10. During the pressing of the pressing rod 3, the distance between the upper connecting ring 10 and the spring seat 7 decreases, and the curved torsion bar 11 undergoes elastic deformation under pressure. After the pressing rod 3 is released, the curved torsion bar 11 tends to return to its original shape, thereby providing an elastic force to push the upper connecting ring 10 upward, increasing the distance between the upper connecting ring 10 and the spring seat 7, and correspondingly pushing the pressing rod 3 upward. Several curved torsion bars 11 are distributed at equal angles in the circumferential direction, so that each curved torsion bar 11 is subjected to uniform force.

[0024] The upper opening of the pump shell 1 is provided with a plurality of annular clamping grooves 12, and the outer wall of the spring seat 7 is provided with a plurality of annular clamping blocks 13. When the spring seat 7 is inserted into the upper opening of the pump shell 1, the annular clamping blocks 13 are respectively clamped into the annular clamping grooves 12, so that the spring seat 7 is fixedly installed on the top of the pump shell 1.

[0025] The spring seat 7 is internally formed with a guide hole 14, and the pressing rod 3 passes through the guide hole 14 correspondingly. The inner diameter of the guide hole 14 is consistent with the outer diameter of the pressing rod 3, so that the guide hole 14 can guide the pressing rod 3 and the pressing rod 3 is not prone to shaking.

[0026] The outer side of the spring seat 7 is provided with a stop ring 15, which is pressed on the top end face of the pump shell 1 when the spring seat 7 is installed on the top of the pump shell 1. The stop ring 15 can limit the spring seat 7, so that the spring seat 7 will not sink due to pressure.

[0027] The material of the spring seat 7 and the plastic spring 8 is POK, so that the plastic spring 8 has high elasticity and is not prone to breaking.

[0028] When the pressing type emulsion pump works, the pressing rod 3 is pressed downward, the plastic spring 8 is compressed, a passage is formed between the piston 6 and the valve core 5, the one-way valve 2 is closed, and the emulsion in the inner cavity of the pump shell 1 can be squeezed out from the discharge channel 4. After the pressing rod 3 is loosened, the elastic force of the plastic spring 8 drives the pressing rod 3 to move upward, a seal is formed between the piston 6 and the valve core 5, the one-way valve 2 is opened, and the emulsion below can be sucked into the inner cavity of the pump shell 1.

[0029] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and decorations can be made without departing from the principle of the utility model, and these improvements and decorations should also be regarded as the protection range of the utility model.

Claims

1. A plastic spring press pump characterized by: The utility model provides a pump, including pump shell (1), one -way valve (2) is arranged in the lower opening of pump shell (1), press bar (3) is inserted in the upper opening of pump shell (1), and there is delivery channel (4) in press bar (3), and the lower end of press bar (3) is provided with valve core (5), and valve core (5) is provided with piston (6) outside the sleeve;Spring seat (7) is installed on the top of pump shell (1), and plastic spring (8) is integrally connected on spring seat (7), and plastic spring (8) is annular member and is set outside press bar (3);The top of press bar (3) is provided with pressure ring (9), and when press bar (3) moves down, pressure ring (9) is pressed on plastic spring (8) correspondingly.

2. A plastic spring press pump according to claim 1, characterized in that: The plastic spring (8) includes an upper connecting ring (10) and at least two curved torsion bars (11); the upper connecting ring (10) is arranged above the spring seat (7) oppositely, and the upper connecting ring (10) is set outside the press bar (3); the lower end of the curved torsion bar (11) is fixedly connected with the spring seat (7), the upper end of the curved torsion bar (11) is fixedly connected with the upper connecting ring (10), and the curved torsion bars (11) are distributed circumferentially.

3. A plastic spring press pump according to claim 1, wherein: The upper opening of the pump shell (1) is provided with a plurality of annular clamping grooves (12), and the outer wall of the spring seat (7) is provided with a plurality of annular clamping blocks (13), the annular clamping blocks (13) are respectively clamped into the annular clamping grooves (12), so that the spring seat (7) is fixedly installed on the top of the pump shell (1).

4. A plastic spring bellows pump as defined in claim 1, wherein: The spring seat (7) is provided with a guide hole (14) in the inside, and the press bar (3) passes through the guide hole (14) correspondingly; the inner diameter of the guide hole (14) is consistent with the outer diameter of the press bar (3), so that the guide hole (14) can guide the press bar (3).

5. A plastic spring bellows pump as defined in claim 1, wherein: The outer side of the spring seat (7) is provided with a stop ring (15), and when the spring seat (7) is installed on the top of the pump shell (1), the stop ring (15) is pressed on the top end surface of the pump shell (1) correspondingly.

6. A plastic spring press pump according to any one of claims 1 to 5, characterized in that: The spring seat (7) and the plastic spring (8) are both made of POK.

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