CN220214227U - Universal pre-filter with improved structure - Google Patents

Abstract

The utility model discloses a universal front filter with improved structure, which comprises a main body part, a three-way valve head and a clamp spring, wherein a first tubular connector is arranged on the main body part, a second tubular connector is arranged on the three-way valve head, an inner annular clamping groove is formed in the inner side wall of the second tubular connector, an outer annular clamping groove is formed in the outer side wall of the first tubular connector, the second tubular connector is sleeved on the first tubular connector so that the inner annular clamping groove and the outer annular clamping groove are mutually aligned, and the inner annular clamping groove and the outer annular clamping groove are mutually matched to form a circular clamp spring accommodating cavity; the clamp spring is clamped in the clamp spring accommodating cavity. According to the utility model, the three-way valve head is directly connected with the main body part by using the clamp spring, so that a limit nut (made of copper) in the prior art is omitted, the installation is more convenient, and the production cost is saved.

Description

Universal pre-filter with improved structure

Technical Field

The utility model relates to water purifying equipment, in particular to a universal pre-filter with an improved structure.

Background

As shown in fig. 1, the conventional universal prefilter mainly includes a main body 1a, a three-way valve head 2a, a stop nut 3a, and a clamp spring 4a, wherein a first tubular connector 10a is disposed on the main body 1a, and a thread is disposed on an outer side surface of the first tubular connector 10a for threaded connection with the stop nut 3 a. The three-way valve head 2a is respectively provided with a water inlet section 21a, a water outlet section 22a and a second tubular interface 23a, and the outer side wall of the second tubular interface 23a is provided with an annular clamping groove 20a.

During installation, the clamp spring 4a is preloaded into the limit nut 3a until the clamp spring 4a abuts against the limit part of the limit nut 3a, and then the clamp spring 4a and the limit nut 3a are synchronously sleeved on the second tubular interface 23a of the three-way valve head 2a by utilizing a specific tool until the clamp spring 4a is clamped into the annular clamping groove 20a of the second tubular interface 23 a. After the installation is completed, the clamp spring 4a, the three-way valve head 2a and the limit nut 3a are assembled into a unified assembly, and at this time, the limit nut 3a is axially limited on the second tubular interface 23a of the three-way valve head 2a by the clamp spring 4a, that is, the limit nut 3a can only rotate on the second tubular interface 23a and cannot axially move.

Finally, the second tubular connector 23a of the three-way valve head 2a is inserted into the first tubular connector 10a of the main body 1a in a sealing manner, and is mutually fixed through the threaded connection between the limit nut 3a and the first tubular connector 10.

The universal connection mode in the prior art is widely applied to the market, but the universal connection mode has more parts and higher cost (a limit nut made of copper is added).

Disclosure of Invention

The utility model provides a universal pre-filter with an improved structure, and aims to solve the problem of high production cost in the prior art.

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

the utility model provides a universal prefilter of institutional advancement, it includes main part, tee bend valve head and jump ring, is equipped with first tubular interface on the main part, is equipped with the second tubular interface on the tee bend valve head, has seted up interior annular draw-in groove on the inside wall of second tubular interface, has seted up outer annular draw-in groove on the lateral wall of first tubular interface, second tubular interface cover is located first tubular interface and is made interior annular draw-in groove and outer annular draw-in groove align each other to interior annular draw-in groove and outer annular draw-in groove cooperate the back each other and form a circular jump ring holding chamber; the clamp spring is clamped in the clamp spring accommodating cavity. Of course, the inner annular clamping groove can be arranged on the first pipe joint of the main body part according to the actual production requirement, and the outer annular clamping groove can be arranged on the second pipe joint of the three-way valve head.

In a recommended embodiment, the clamp spring is a C-shaped clamp spring.

In a preferred embodiment, the clip is in the form of a sleeve, which includes a first end and a resilient second end, the outer diameter of which is greater than the outer diameter of the first end.

In a recommended embodiment, the snap spring is in a conical pipe sleeve shape, a plurality of notches are formed in the second end portion of the snap spring at intervals, and each notch extends from the second end portion to the first end portion. The provision of the notch may increase the resilience of the second end portion.

In a preferred embodiment, each of the recesses extends in the axial direction of the snap spring.

In a preferred embodiment, the clamping spring is provided with a broken opening in the longitudinal direction. The broken opening can more conveniently enable the clamp spring to be sleeved in the outer annular clamping groove in advance.

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects: according to the utility model, the three-way valve head is directly connected with the main body part by using the clamp spring, so that a limit nut (made of copper) in the prior art is omitted, the installation is more convenient, and the production cost is saved.

Drawings

Fig. 1 is a schematic diagram of an exploded structure of the prior art.

Fig. 2 is an exploded view of the first embodiment.

Fig. 3 is a schematic cross-sectional structure of the first embodiment.

Fig. 4 is an enlarged schematic view of the portion a in fig. 3.

Fig. 5 is a schematic perspective view of a snap spring (sleeve shape) according to the first embodiment.

Fig. 6 is a schematic cross-sectional structure of the second embodiment.

Fig. 7 is an enlarged schematic view of the portion B in fig. 6.

Detailed Description

The utility model will be further understood by reference to the following examples which are given to illustrate the utility model but are not intended to limit the scope of the utility model.

Examples

Referring to fig. 2, 3 and 4, a universal pre-filter with improved structure comprises a main body part 1, a three-way valve head 2 and a clamp spring 3, wherein a first tubular connector 11 is arranged on the main body part 1, a second tubular connector 21 is arranged on the three-way valve head 2, an inner annular clamping groove 20 is formed in the inner side wall of the second tubular connector 21, an outer annular clamping groove 10 is formed in the outer side wall of the first tubular connector 11, the second tubular connector 21 is sleeved on the first tubular connector 11 so that the inner annular clamping groove 20 and the outer annular clamping groove 10 are aligned with each other, and a circular clamp spring accommodating cavity 100 is formed after the inner annular clamping groove 20 and the outer annular clamping groove 10 are matched with each other.

Referring to fig. 5, in this embodiment, the clip 3 is in a sleeve shape, and the sleeve-shaped clip 3 includes a first end 31 and a second end 32 having a resilient force, where the outer diameter of the second end 32 is larger than the outer diameter of the first end 31. As can be seen from the figure, the second end 32 of the clip 3 is provided with a plurality of notches 320 spaced from each other, and each notch 320 extends axially from the second end 32 toward the first end 31. And for ease of assembly the clamping spring 3 is further provided with a broken opening 33 in the axial direction. It should be noted that, in this embodiment, the sleeve-shaped clip spring 3 may be made of metal or cheaper plastic.

During installation, the sleeve-shaped clamp spring 3 is sleeved on the outer annular clamping groove 10 of the main body part 1, the first end part 31 of the clamp spring 3 is close to the port of the first tubular connector 11, the second end part 32 is far away from the port of the first tubular connector 11, and then the second tubular connector 21 of the three-way valve head 2 is directly sleeved on the first tubular connector 11 of the main body part 1. At this time, the inner annular clamping groove 20 and the outer annular clamping groove 10 are matched with each other to form a circular clamping spring accommodating cavity 100, and the clamping spring 3 is clamped in the clamping spring accommodating cavity 100. And as can be seen from fig. 4, the second end face of the second end portion 32 and the first end face of the first end portion 31 respectively abut against corresponding radial inner walls of the snap spring receiving cavity 100 in order to achieve a more desirable snap effect.

The whole installation process is completed by manpower completely without using a specific tool, so that the installation process is very simple. After the installation is completed, the three-way valve head 2 is connected to the main body 1 in a sealing manner (by a sealing ring, which is in the prior art and is not described in detail), and the three-way valve head 2 can rotate relative to the main body 1 but cannot move axially.

Examples

Referring to fig. 6 and 7, the second embodiment has substantially the same structure as the first embodiment, and the main difference is that the clamp spring in the second embodiment is a C-shaped clamp spring 3b, and it can be seen from the drawing that the C-shaped clamp spring 3b is clamped in the clamp spring accommodating cavity 100b, so that the three-way valve head 2 is only rotatably (unable to perform axial movement) connected to the main body 1.

Compared with the first embodiment, the second embodiment adopts the C-shaped clamp spring 3b (made of metal), so that the cost is high, and the installation is troublesome (a specific tool is needed).

The present utility model has been described in detail with reference to the embodiments, but the description is only the preferred embodiments of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model should be considered as falling within the scope of the present utility model.

Claims (6)

1. The utility model provides a universal leading filter of institutional advancement which characterized in that: the three-way valve comprises a main body part, a three-way valve head and a clamp spring, wherein a first tubular interface is arranged on the main body part, a second tubular interface is arranged on the three-way valve head, an inner annular clamping groove is formed in the inner side wall of the second tubular interface, an outer annular clamping groove is formed in the outer side wall of the first tubular interface, the second tubular interface is sleeved on the first tubular interface so that the inner annular clamping groove and the outer annular clamping groove are mutually aligned, and a circular clamp spring accommodating cavity is formed after the inner annular clamping groove and the outer annular clamping groove are mutually matched; the clamp spring is clamped in the clamp spring accommodating cavity.

2. The universal prefilter of claim 1, wherein: the clamp spring is a C-shaped clamp spring.

3. The universal prefilter of claim 1, wherein: the clamp spring is in a pipe sleeve shape, the pipe sleeve-shaped clamp spring comprises a first end part and a second end part with a rebound force, and the outer diameter of the second end part is larger than that of the first end part.

4. A universal prefilter as defined in claim 3, wherein: the clamping spring is in a conical pipe sleeve shape, a plurality of gaps are formed in the second end portion of the clamping spring at intervals, and each gap extends from the second end portion to the first end portion.

5. The universal prefilter of claim 4, wherein: each notch extends along the axial direction of the clamp spring.

6. A universal prefilter as defined in claim 3, wherein: the clamping spring is provided with a broken opening in the length direction.