Simple cleaning machine pump head

Abstract

The utility model relates to a simple cleaning machine pump head, which comprises a pump head seat provided with a water inlet hole and a water outlet hole, a switching chamber used for accommodating a plunger, a locking piece and a one-way diaphragm, and aims to realize a one-way opening and closing function through flexible deformation of the one-way diaphragm, and when pressure acts on the front surface of a sealing part, the sealing part can be opened and closed, so that the sealing part can be opened and closed. The deformation part elastically deforms, so that the sealing part is separated from the water inlet hole / water outlet hole, and a circulation path is formed through the open slot; when the back surface of the sealing part is pressed, the sealing state is kept; according to the structure, the internal structure of the pump head seat is simplified, a traditional mechanical one-way valve can be replaced only through the locking piece and the one-way diaphragm, the overall structure is compact, maintenance is convenient and fast, the lightweight structural design concept of cleaning equipment is met, and the market competitiveness is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of cleaning machines, and in particular to a simplified cleaning machine pump head. Background Technology

[0002] Traditional cleaning machine pump heads typically use mechanical check valves to control the unidirectional flow of the medium. These mechanical check valves are usually composed of multiple components such as spring seats, springs, and valve cores. Their structure is complex and has problems such as cumbersome assembly processes and large space occupation. In addition, the number of plungers used for pressurization in the cleaning machine pump head is directly proportional to the number of check valves, which also results in high production costs and is not conducive to the lightweight and miniaturized design of the equipment. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the technical solution adopted by this utility model is as follows: a simple cleaning machine pump head, including a pump head seat, the pump head seat is provided with an inlet hole and an outlet hole, and a transfer chamber for accommodating a plunger, and also includes a locking member and a one-way diaphragm. The pump head seat is provided with a through hole and a receiving groove coaxially distributed between the inlet hole / outlet hole and the transfer chamber. The locking member is threadedly connected to the receiving groove. The one-way diaphragm is provided with a sealing part, a deformation part and a positioning part from the inside to the outside. The sealing part abuts against the through hole. The deformation part is provided with an opening groove for the flow of medium. The positioning part is engaged between the locking member and the pump head seat.

[0004] The above technical solution achieves one-way opening and closing through the flexible deformation of a unidirectional diaphragm. When pressure is applied to the front of the sealing part, the deformable part undergoes elastic deformation, causing the sealing part to detach from the inlet / outlet and form a flow path through the opening groove. When the back of the sealing part is subjected to pressure, it maintains a sealed state. This structure simplifies the internal structure of the pump head seat, requiring only two components: a locking element and a unidirectional diaphragm, to replace the traditional mechanical one-way valve. The overall structure is compact and easy to maintain, meeting the lightweight structural design concept of cleaning equipment and improving market competitiveness.

[0005] The present invention is further configured such that the sealing part is in the shape of a frustum, and the sealing part is provided with a conical surface for sealing the connecting through hole.

[0006] By adopting the above technical solution, a reliable linear sealing contact is formed between the conical surface and the inlet / outlet of the pump head seat, thereby improving the sealing effect of the one-way diaphragm and increasing the working efficiency of the pump head.

[0007] The present invention is further configured such that a steel ring is embedded in the unidirectional diaphragm at the positioning part.

[0008] By adopting the above technical solution, a one-way diaphragm is integrally injection molded on the basis of a stainless steel ring, which ensures that the one-way diaphragm maintains a stable assembly position during frequent deformation, making the engagement between the positioning part and the locking part more secure and preventing the one-way diaphragm from shifting or loosening.

[0009] The present invention is further configured such that the bottom of the locking member is provided with a circumferentially distributed snap-fit ​​portion, and a gap for the flow of medium is provided between adjacent snap-fit ​​portions.

[0010] By adopting the above technical solution, by setting circumferentially distributed snap-fit ​​parts at the bottom and reserving flow gaps between adjacent snap-fit ​​parts, it is ensured that the medium flows unimpeded inside the pump head.

[0011] The present invention is further configured such that the inner side of the snap-fit ​​portion is provided with a chamfered surface, and the outer side of the snap-fit ​​portion is provided with a side groove.

[0012] Using the above technical solution, the locking components are distributed circumferentially on the one-way diaphragm. The chamfered surface reduces the contact area between the locking components and the one-way diaphragm, leaving sufficient deformation space for the elastic part, so that the one-way diaphragm deforms naturally.

[0013] The present invention is further configured such that the receiving groove is provided with an internal thread, the locking member is connected to the pump head seat through the internal thread, and the outer side of the locking member is provided with a sealing groove for accommodating the sealing ring.

[0014] By adopting the above technical solution, the sealing performance between the pump head seat and the locking component is improved by using a sealing ring, thus preventing liquid medium from leaking from the connection between the two.

[0015] The embodiments of this utility model will be further described below with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a top view of the pump head seat of this utility model;

[0017] Figure 2 For the present utility model Figure 1 A sectional view of the view along direction A in the middle;

[0018] Figure 3 This is a cross-sectional view of the pump head seat of this utility model;

[0019] Figure 4 This is a perspective view of the unidirectional diaphragm of this utility model;

[0020] Figure 5 For the present utility model Figure 2 A magnified view of the central B-direction view;

[0021] Figure 6 This is a perspective view of the locking component of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the connecting plunger of this utility model;

[0023] Wherein: 1-pump head seat, 2-locking part, 3-one-way diaphragm, 4-steel ring, 11-inlet hole, 12-outlet hole, 13-transfer chamber, 14-through hole, 15-receiving groove, 16-internal thread, 21-clamping part, 22-gap, 23-chamfered surface, 24-side groove, 25-sealing groove, 31-sealing part, 32-deformation part, 33-positioning part, 34-opening groove, 35-conical surface, 3.1-first one-way diaphragm, 3.2-second one-way diaphragm; Detailed Implementation

[0024] like Figure 1-4 As shown, this utility model provides a simple cleaning machine pump head, including a pump head seat 1, which has an inlet hole 11 and an outlet hole 12, as well as a transfer chamber 13 for accommodating a plunger. It also includes a locking member 2 and a one-way diaphragm 3. The pump head seat 1 has a through hole 14 and a receiving groove 15 coaxially distributed between the inlet hole 11 / outlet hole 12 and the transfer chamber 13. The locking member 2 is threadedly connected to the receiving groove 15. The one-way diaphragm 3 has a sealing part 31, a deformation part 32 and a positioning part 33 from the inside to the outside. The sealing part 31 abuts against the through hole 14. The deformation part 32 has an opening groove 34 for medium flow. The positioning part 33 is engaged between the locking member 2 and the pump head seat 1.

[0025] Combination Figure 5 As shown, in this embodiment, the sealing part 31 has an overall frustum-shaped structure. The sealing part 31 is provided with a conical surface 35 for sealing the connecting through hole 14. The conical surface 35 forms a reliable linear sealing contact with the water inlet hole 11 / water outlet hole 12 of the pump head seat 1, which improves the sealing effect of the one-way diaphragm 3 and improves the working efficiency of the pump head. The one-way diaphragm 3 is embedded with a steel ring 4 at the positioning part 33. The one-way diaphragm 3 is integrally injection molded on the basis of the stainless steel ring to ensure that the one-way diaphragm 3 maintains a stable assembly position during frequent deformation, so that the positioning part 33 and the locking part 2 are more firmly connected, and the one-way diaphragm 3 is prevented from shifting or loosening.

[0026] Combination Figure 6 As shown, in this embodiment, the bottom of the locking member 2 is provided with a circumferentially distributed snap-fit ​​portion 21, and a gap 22 for the flow medium is provided between adjacent snap-fit ​​portions 21. By providing circumferentially distributed snap-fit ​​portions 21 at the bottom and reserving a flow gap 22 between adjacent snap-fit ​​portions 21, it is ensured that the medium flows unimpeded inside the pump head. The inner side of the snap-fit ​​portion 21 is provided with a chamfered surface 23, and the outer side of the snap-fit ​​portion 21 is provided with a side groove 24. The locking member 2 is circumferentially distributed on the one-way diaphragm 3. The chamfered surface 23 reduces the contact area between the locking member 2 and the one-way diaphragm 3, leaving sufficient deformation space for the elastic part, so that the one-way diaphragm 3 deforms naturally.

[0027] In this embodiment, the receiving groove 15 is provided with an internal thread 16, and the locking member 2 is connected to the pump head seat 1 through the internal thread 16. The outer side of the locking member 2 is provided with a sealing groove 25 for accommodating the sealing ring. The sealing ring improves the sealing performance between the pump head seat 1 and the locking member 2, preventing liquid medium from leaking from the connection between the two.

[0028] Combination Figure 7 As shown, the working principle of this utility model is as follows: When the plunger moves away from the pump head seat 1 and creates a negative pressure in the transfer chamber 13, the first one-way diaphragm 3.1 located at the water inlet 11 undergoes elastic deformation and opens, while the second one-way diaphragm 3.2 located at the water outlet 12 remains unchanged. At this time, the medium at the water inlet 11 flows into the receiving tank 15 through the through hole 14 and the first one-way diaphragm 3.1 in sequence under the action of negative pressure. Conversely, when the plunger approaches the pump head seat 1 and creates a high pressure in the transfer chamber 13, the first one-way diaphragm 3.1 located at the water inlet 11 remains unchanged, while the second one-way diaphragm 3.2 located at the water outlet 12 undergoes elastic deformation and opens, allowing the medium in the transfer chamber 13 to be forced out from the water outlet 12 through the second one-way diaphragm 3.2, thereby meeting the pressure boosting spray washing requirements of the cleaning machine.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A simple type of cleaning machine pump head, comprising a pump head base (1) provided with a water inlet hole (11) and a water outlet hole (12), and an adapter chamber (13) for accommodating a plunger, characterized in that, The pump head base (1) is located between the water inlet hole (11) / water outlet hole (12) and the adapter chamber (13) and is provided with a coaxial distribution through hole (14) and a containing groove (15), the locking piece (2) is threadedly connected to the containing groove (15), the one-way diaphragm (3) is provided with a sealing part (31), a deformation part (32) and a positioning part (33) from inside to outside, the sealing part (31) abuts against the through hole (14), the deformation part (32) is provided with an opening groove (34) for medium flow, and the positioning part (33) is clamped between the locking piece (2) and the pump head base (1).

2. A simple cleaning machine pump head according to claim 1, characterized in that: The sealing part (31) is in a whole circular truncated cone structure, and the sealing part (31) is provided with a taper surface (35) for sealingly connecting the through hole (14).

3. A simple cleaning machine pump head according to claim 2, characterized in that: The one-way diaphragm (3) is inlaid with a steel ring (4) at the positioning part (33).

4. The pump head of claim 1, wherein: The bottom of the locking piece (2) is provided with a circumferentially distributed clamping part (21), and gaps (22) for medium flow are arranged between adjacent clamping parts (21).

5. A simple cleaning machine pump head according to claim 4, characterized in that: The inner side of the clamping part (21) is provided with a chamfer surface (23), and the outer side of the clamping part (21) is provided with a side groove (24).

6. A simple cleaning machine pump head according to claim 5, characterized in that: The containing groove (15) is provided with an internal thread (16), the locking piece (2) is connected to the pump head base (1) through the internal thread (16), and the outer side of the locking piece (2) is provided with a sealing groove (25) for containing a sealing ring.

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