All-plastic sprayer

Abstract

The utility model provides an all-plastic sprayer which comprises a threaded ring, a pump body arranged in the threaded ring and a piston seat installed in the pump body in a sliding mode, the upper end of the piston seat is fixedly connected in a piston rod in an inserted mode, and a piston is installed at the lower end of the piston seat in a sleeved mode. An annular limiting groove is defined between the lower end of the piston rod and the outer wall of the piston seat; the piston comprises a cylindrical seat and a piston part, the piston seat is sleeved with the cylindrical seat, the piston part is attached to the inner wall of the pump body, the upper end of the cylindrical seat extends towards the interior of the annular limiting groove, a spring part is integrally formed at the upper end of the cylindrical seat, the spring part is arranged in the annular limiting groove, and the piston part is arranged in the annular limiting groove. The spring part is propped against the piston rod; the full-plastic sprayer overcomes the defect that an existing sprayer is inconvenient to recycle.

Description

Technical Field

[0001] The utility model relates to the field of sprayers, in particular to a full-plastic sprayer. Background Art

[0002] A sprayer is a product that uses the piston to move in the pump body, causing the gas inside the pump body to flow, the pressure to decrease, and the pressure outside the pump body to remain unchanged. A pressure difference is generated between the pump body and the outside of the pump body, and the liquid is directed out of the pump body through the pressure difference. When the liquid hits the high-speed airflow, it is instantly atomized. According to their size, they are divided into micro sprayers and large sprayers. Large sprayers are used for large-area irrigation such as fields, while micro sprayers are hand-button or push-type and are used by hand.

[0003] For example, patent number CN211359274U discloses a spray pump, wherein the elastic member includes a first spring sleeved outside the upper pump rod and a second spring sleeved outside the lower pump rod, and the first spring is arranged between the convex portion and the piston, and the second spring is arranged between the boss and the first step arranged in the lower pump chamber. A pump ball capable of moving up and down is arranged in the lower pump chamber, which is used to conduct or block the communication between the lower end opening of the pump body and the lower pump chamber. That is, in order to increase the sealing pressure between the piston and the piston seat, the piston and the piston seat are delayed to open during the pressing process, so that the pressure inside the pump chamber is enhanced and a greater injection force is generated. An iron spring is generally added to the upper end of the piston, and the iron spring is not uniform in material with other plastic parts, which is not conducive to environmental protection and recycling; and the existing sprayer generally adopts a pump ball component, and the pump ball is made of glass, which is not uniform in material with other plastic parts, which is not conducive to recycling; in addition, the existing sprayer generally adopts an iron spring to reset the pressing head cap, and the iron spring is not uniform in material with other plastic parts, which is not conducive to recycling. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The problem to be solved by the utility model is to provide a full-plastic sprayer to overcome the defect that the existing sprayers are inconvenient to recycle.

[0006] (II) Technical solution

[0007] In order to solve the technical problem, the utility model provides an all-plastic sprayer, comprising a threaded ring, a pump body arranged in the threaded ring, and a piston seat slidably installed in the pump body, the upper end of the piston seat is plugged and fixed in the piston rod, the lower end of the piston seat is fitted with a piston, and an annular limiting groove is formed between the lower end of the piston rod and the outer wall of the piston seat; the piston comprises a columnar seat sleeved on the piston seat and a piston part that fits with the inner wall of the pump body, the upper end of the columnar seat extends toward the annular limiting groove, the upper end of the columnar seat is integrally formed with a spring part, the spring part is placed in the annular limiting groove, and the spring part is against the piston rod.

[0008] Furthermore, the spring portion comprises a trumpet-shaped thin sheet with a small diameter at the upper end and a large diameter at the lower end, and the outer wall of the trumpet-shaped thin sheet is provided with a conical wall surface.

[0009] Furthermore, the spring portion includes a plurality of elastic walls arranged at equal intervals along the circumferential direction and a resisting ring located at the top, the resisting ring is connected to the columnar seat through the elastic walls, and a plurality of inclined elastic ribs are arranged at intervals on the elastic walls.

[0010] Furthermore, a lock cover is installed in the pump body, a first limit flange is provided on the lock cover, a second limit flange is provided on the piston rod, an integrated plastic spring is installed between the first limit flange and the second limit flange, and the plastic spring is sleeved on the piston rod.

[0011] Furthermore, the plastic spring includes an upper support ring and a lower support ring that are spaced apart, at least one middle support ring is disposed between the upper support ring and the lower support ring, and the upper support ring, the lower support ring and the middle support ring are connected by a plurality of elastic ribs spaced apart in a ring shape, and the shape of the elastic ribs is C-shaped or V-shaped.

[0012] Furthermore, the plastic spring comprises an upper sleeve and a lower sleeve, the upper sleeve and the lower sleeve are connected via an elastic bellows, and the shape of the elastic bellows is C-shaped or V-shaped.

[0013] Furthermore, the plastic spring comprises a large sleeve and a small sleeve, the outer diameter of the large sleeve is larger than the outer diameter of the small sleeve, and the large sleeve is transitionally connected to the small sleeve via an elastic contraction portion.

[0014] Furthermore, a water sealing sheet is installed at the water inlet at the bottom of the pump body.

[0015] Furthermore, it also includes a pressing head cap installed on the upper end of the piston rod, a diffusion nozzle is installed at the water outlet of the pressing head cap, and the diffusion nozzle, the pressing head cap, the piston rod and the piston seat are connected in sequence. A dust cover for covering the pressing head cap is detachably installed on the thread ring, and a gasket is installed in the thread ring.

[0016] (III) Beneficial effects

[0017] The all-plastic sprayer provided by the utility model has the following advantages compared with the prior art:

[0018] 1) A spring part is integrally arranged on the cylindrical seat of the piston. The spring part and the piston are an integrated plastic part. The spring part is used to replace the traditional iron spring. Under the premise of ensuring the function, the materials of various components are kept consistent, which is beneficial to environmental protection and recycling;

[0019] 2) Plastic springs are used to replace traditional iron springs, which is conducive to keeping the materials of various components consistent and facilitating recycling; plastic springs with suitable shapes and glue thickness can be selected according to the elastic force requirements, which is highly flexible;

[0020] 3) Use water sealing pieces to replace traditional pump beads. The water sealing pieces are made of plastic and are easy to recycle as a whole without picking. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A three-dimensional diagram of an all-plastic sprayer according to Example 1;

[0023] Figure 2 A cross-sectional view of an all-plastic sprayer according to Example 1;

[0024] Figure 3 This is an exploded view of an all-plastic sprayer of Example 1;

[0025] Figure 4 A three-dimensional diagram of an all-plastic sprayer piston according to Example 1;

[0026] Figure 5 A cross-sectional view of an all-plastic sprayer piston according to Example 1;

[0027] Figure 6 A three-dimensional diagram of a plastic spring of an all-plastic sprayer in Example 1;

[0028] Figure 7 This is a schematic diagram of the structure of a plastic spring of an all-plastic sprayer in Example 1;

[0029] Figure 8 A cross-sectional view of an all-plastic sprayer according to Example 2;

[0030] Fig. 9 A three-dimensional diagram of a plastic spring of an all-plastic sprayer according to Example 2;

[0031] Fig.10 A cross-sectional view of a plastic spring of an all-plastic sprayer according to Example 2;

[0032] Fig.11 A cross-sectional view of an all-plastic sprayer according to Example 3;

[0033] Fig.12 A three-dimensional diagram of an all-plastic sprayer piston according to Example 3;

[0034] Fig.13 A cross-sectional view of an all-plastic sprayer piston according to Example 3;

[0035] Fig.14 A three-dimensional diagram of a plastic spring of an all-plastic sprayer in Example 3;

[0036] Fig.15 A cross-sectional view of a plastic spring of an all-plastic sprayer according to Example 3;

[0037] The names of the components corresponding to the reference numerals in the figure are: 1, thread ring; 2, pump body; 3, piston seat; 4, piston rod; 401, second limiting flange; 5, piston; 51, cylindrical seat; 52, piston part; 53, spring part; 531, trumpet-shaped sheet; 532, arc-shaped wall surface; 533, elastic wall; 534, abutment ring; 535, inclined elastic rib; 6, annular limiting groove; 7, lock cover; 7 01. First limiting flange; 8. Plastic spring; 801. Upper support ring; 802. Lower support ring; 803. Middle support ring; 804. Elastic ribs; 805. Upper sleeve; 806. Lower sleeve; 807. Elastic bellows; 808. Large sleeve; 809. Small sleeve; 810. Elastic contraction part; 9. Water sealing piece; 10. Pressing head cap; 11. Diffuser nozzle; 12. Dust cover; 13. Gasket. DETAILED DESCRIPTION

[0038] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0040] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0041] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0042] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0043] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0044] Embodiment 1:

[0045] See also Figures 1 to 7 The present embodiment provides an all-plastic sprayer, comprising a threaded ring 1, a pump body 2 arranged in the threaded ring 1, and a piston seat 3 slidably installed in the pump body 2. The threaded ring 1 is provided with an internal thread for threaded connection with the bottle body. The upper end of the piston seat 3 is plugged and fixed in the piston rod 4. The lower end of the piston seat 3 is sleeved with a piston 5, and the piston 5 is placed in the pump body 2.

[0046] See also Figure 2 and Figure 3 The lower end of the piston rod 4 and the outer wall of the piston seat 3 form an annular limiting groove 6; the piston 5 includes a cylindrical seat 51 sleeved on the piston seat 3 and a piston portion 52 fitted with the inner wall of the pump body 2, the upper end of the cylindrical seat 51 extends toward the annular limiting groove 6, and the upper end of the cylindrical seat 51 is integrally formed with a spring portion 53, which is placed in the annular limiting groove 6 and abuts against the piston rod 4. Among them, the cylindrical seat 51, the piston portion 52 and the spring portion 53 are plastic parts of an integrated structure.

[0047] For details, see Figure 4 and Figure 5 The spring portion 53 includes a plurality of elastic walls 533 arranged at equal intervals along the circumferential direction and a resisting ring 534 located at the top. In this embodiment, there are two elastic walls 533. The resisting ring 534 is connected to the cylindrical seat 51 through the elastic wall 533. A plurality of inclined elastic ribs 535 are arranged at intervals on the elastic wall 533. When in use, the resisting ring 534 resists against the piston rod 4.

[0048] See also Figure 2 and Figure 3 A lock cover 7 is installed in the pump body 2, a first limit flange 701 is arranged on the lock cover 7, a second limit flange 401 is arranged on the piston rod 4, an integrated plastic spring 8 is installed between the first limit flange 701 and the second limit flange 401, and the plastic spring 8 is jacketed on the piston rod 4. Figure 6 and Figure 7 , wherein the plastic spring 8 includes an upper support ring 801 and a lower support ring 802 arranged at intervals, and the upper support ring 801 and the lower support ring 802 have the same shape and size. At least one middle support ring 803 is arranged between the upper support ring 801 and the lower support ring 802, and the upper support ring 801, the lower support ring 802 and the middle support ring 803 are connected by a plurality of elastic ribs 804 arranged at intervals in an annular shape, and the shape of the elastic ribs 804 can be C-shaped or V-shaped. In this embodiment, there is one middle support ring 803 and two elastic ribs 804. When in use, the upper support ring 801 is placed on the second limiting flange 401, and the lower support ring 802 is placed on the first limiting flange 701.

[0049] See also Figure 2 and Figure 3 A water sealing sheet 9 is installed at the water inlet at the bottom of the pump body 2, and the water sealing sheet 9 is made of plastic. The sprayer also includes a pressing head cap 10 installed at the upper end of the piston rod 4, and a diffusion nozzle 11 is installed at the water outlet of the pressing head cap 10. The diffusion nozzle 11, the pressing head cap 10, the piston rod 4 and the piston seat 3 are connected in sequence. A dust cover 12 for covering the pressing head cap 10 is detachably installed on the thread ring 1, and a gasket 13 is installed in the thread ring 1.

[0050] Embodiment 2:

[0051] The difference between the all-plastic sprayer provided in this embodiment and that in Embodiment 1 is that the structure of the plastic spring 8 is different.

[0052] See also Figures 8 to 10 In this embodiment, the plastic spring 8 is tubular, including an upper sleeve 805 and a lower sleeve 806. The upper sleeve 805 and the lower sleeve 806 have the same shape and size. The upper sleeve 805 and the lower sleeve 806 are connected by an elastic bellows 807. The shape of the elastic bellows 807 can be C-shaped or V-shaped. When in use, the upper sleeve 805 is placed on the second limiting flange 401, and the lower sleeve 806 is placed on the first limiting flange 701.

[0053] Embodiment 3:

[0054] The all-plastic sprayer provided in this embodiment is different from that in Embodiment 1 in that the structures of the spring portion 53 and the plastic spring 8 are different.

[0055] See also Figures 11 to 15 In this embodiment, the spring portion 53 includes a trumpet-shaped thin sheet 531 with a small diameter at the upper end and a large diameter at the lower end. The outer wall of the trumpet-shaped thin sheet 531 is provided with a conical wall surface 532, and the conical wall surface 532 is arranged at a certain inclination angle with the columnar seat 51 (see Fig.13 ), so that it is convenient for its deformation to generate elastic force. When in use, the upper end of the trumpet-shaped thin sheet 531 is against the piston rod 4. The plastic spring 8 is tubular, including a large sleeve 808 and a small sleeve 809. The outer diameter of the large sleeve 808 is larger than the outer diameter of the small sleeve 809. The large sleeve 808 is transitionally connected to the small sleeve 809 through an elastic contraction portion 810. When in use, the small sleeve 809 is against the second limiting flange 401, and the large sleeve 808 is against the first limiting flange 701.

[0056] The utility model provides an all-plastic sprayer, which adopts an elastic part and a plastic spring to replace a traditional iron spring, and adopts a water sealing sheet to replace a traditional pump ball. Under the premise of ensuring the functions, all parts can be made of plastic materials. The materials of various parts are unified, which is convenient for overall recycling without sorting.

[0057] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A fully plastic sprayer, characterized in that: The invention comprises a threaded ring (1), a pump body (2) arranged in the threaded ring (1), and a piston seat (3) slidably installed in the pump body (2); the upper end of the piston seat (3) is inserted and fixed in the piston rod (4); the lower end of the piston seat (3) is sleeved with a piston (5); an annular limiting groove (6) is formed between the lower end of the piston rod (4) and the outer wall of the piston seat (3); the piston (5) comprises a columnar seat (51) sleeved on the piston seat (3) and a piston part (52) abutting against the inner wall of the pump body (2); the upper end of the columnar seat (51) extends toward the annular limiting groove (6); the upper end of the columnar seat (51) is integrally formed with a spring part (53); the spring part (53) is placed in the annular limiting groove (6), and the spring part (53) abuts against the piston rod (4).

2. The all-plastic sprayer according to claim 1, characterized in that: The spring portion (53) comprises a trumpet-shaped thin sheet (531) having a small diameter at the upper end and a large diameter at the lower end, and the outer wall of the trumpet-shaped thin sheet (531) is provided with a conical wall surface (532).

3. The all-plastic sprayer according to claim 1, characterized in that: The spring portion (53) comprises a plurality of elastic walls (533) arranged at equal intervals along the circumferential direction and a resisting ring (534) located at the top, the resisting ring (534) being connected to the columnar seat (51) via the elastic walls (533), and a plurality of inclined elastic ribs (535) being arranged at intervals on the elastic walls (533).

4. The all-plastic sprayer according to claim 1, characterized in that: A lock cover (7) is installed in the pump body (2), and a first limiting flange (701) is arranged on the lock cover (7). A second limiting flange (401) is arranged on the piston rod (4). A plastic spring (8) of an integrated structure is installed between the first limiting flange (701) and the second limiting flange (401), and the plastic spring (8) is sleeved on the piston rod (4).

5. The all-plastic sprayer according to claim 4, characterized in that: The plastic spring (8) comprises an upper support ring (801) and a lower support ring (802) which are arranged at intervals, at least one middle support ring (803) is arranged between the upper support ring (801) and the lower support ring (802), and the upper support ring (801), the lower support ring (802) and the middle support ring (803) are connected by a plurality of elastic ribs (804) which are arranged at intervals in an annular shape, and the shape of the elastic ribs (804) is C-shaped or V-shaped.

6. The all-plastic sprayer according to claim 4, characterized in that: The plastic spring (8) comprises an upper sleeve (805) and a lower sleeve (806), wherein the upper sleeve (805) and the lower sleeve (806) are connected via an elastic bellows (807), and the shape of the elastic bellows (807) is C-shaped or V-shaped.

7. The all-plastic sprayer according to claim 4, characterized in that: The plastic spring (8) comprises a large sleeve (808) and a small sleeve (809), the outer diameter of the large sleeve (808) is larger than the outer diameter of the small sleeve (809), and the large sleeve (808) is transitionally connected to the small sleeve (809) via an elastic contraction portion (810).

8. The all-plastic sprayer according to claim 1, characterized in that: A water sealing sheet (9) is installed at the water inlet at the bottom of the pump body (2).

9. The all-plastic sprayer according to claim 1, characterized in that: It also includes a pressing head cap (10) installed at the upper end of the piston rod (4), a diffusion nozzle (11) is installed at the water outlet of the pressing head cap (10), and the diffusion nozzle (11), the pressing head cap (10), the piston rod (4) and the piston seat (3) are connected in sequence.

10. The all-plastic sprayer according to claim 9, characterized in that: A dust cover (12) for covering the pressing head cap (10) is detachably mounted on the threaded ring (1), and a gasket (13) is mounted inside the threaded ring (1).

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