Pressure-resistant assembly structure of pre-filter and pre-filter

Abstract

The pressure-resistant assembling structure comprises a machine head and a filter bottle, the machine head is provided with a raw water end, a purified water end, a filter bottle assembling end and a machine head cavity, the filter bottle and the filter bottle assembling end are fixed in a matched mode, the machine head is provided with a machine head fixing part, the filter bottle is provided with a filter bottle fixing part, and the machine head fixing part is provided with a water inlet and a water outlet. The filter bottle fixing part and the machine head fixing part are at least partially intersected and are fixedly connected through a fixing structure. Compared with the prior art, the filter bottle fixing structure has the advantages that the design of the filter bottle fixing structure is obviously superior to the prior art, under the condition of extreme pressure bearing, even if the filter bottle is deformed, the filter bottle fixing part and the machine head fixing part are intersected, the machine head fixing part can apply a supporting force to the filter bottle fixing part, the part fixed by the fixing structure is not easy to deform, the sealing failure is not easy to cause, and the sealing effect can be improved.

Description

Technical Field

[0001] The utility model relates to a pressure-resistant assembly structure of a pre-filter and a pre-filter, belonging to the technical field of water purification equipment. Background Art

[0002] The mainstream products of the pre-filters in the prior art are of the type with the filter bottle placed at the bottom, including: a machine head, a filter bottle connected to the upper end of the machine head, and a drain ball valve connected to the lower end of the filter bottle. A filter screen skeleton is arranged inside the filter bottle, and a filter screen is sleeved on the outer wall of the filter screen skeleton. During use, water flows into the gap between the filter bottle and the filter screen from the water inlet of the machine head, passes through the filter screen for filtration, then flows into the center of the filter screen skeleton, and then flows from the center of the filter screen skeleton to the water outlet of the machine head. When sewage discharge is required, the drain ball valve at the lower end of the filter bottle is opened to achieve it.

[0003] For the pre-filter in the prior art, its assembly structure is as Figure 1 shown. The upper part of the filter bottle includes a filter bottle assembly part A (2A) and a filter bottle assembly part B (2B). The machine head is correspondingly provided with a machine head assembly part A (1A). Sealing is achieved through the cooperation of the machine head assembly part A (1A) and the filter bottle assembly part B (2B). When under the limit pressure-bearing condition, the filter bottle assembly part A (2A) will deform, indirectly causing the filter bottle assembly part B (2B) to deform or be misaligned with the machine head assembly part A (1A), resulting in sealing failure.

[0004] The utility model aims to provide a pressure-resistant assembly structure of a pre-filter and a pre-filter with a more optimized structure, which can achieve effective sealing and the sealing will not fail even under the limit pressure-bearing condition. Summary of the Utility Model

[0005] One of the purposes of the utility model is to solve the deficiencies of the pre-filter assembly structure in the prior art, and provide a pressure-resistant assembly structure of a pre-filter and a pre-filter with a more optimized structure, which can achieve effective sealing and the sealing will not fail even under the limit pressure-bearing condition.

[0006] Another purpose of the utility model is to solve the deficiencies of the pre-filter in the prior art, and provide a pre-filter provided with a pressure-resistant assembly structure.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0008] The pressure-resistant assembly structure of the pre-filter includes a machine head and a filter bottle. The machine head is provided with a raw water end, a purified water end, a filter bottle assembly end, and a machine head cavity. The filter bottle is fixedly matched with the filter bottle assembly end. The machine head is provided with a machine head fixing part, and the filter bottle is provided with a filter bottle fixing part. The filter bottle fixing part and the machine head fixing part at least partially intersect and are fixedly connected through a fixing structure.

[0009] The design of the present utility model is significantly superior to the prior art. When under extreme pressure, even if the filter bottle deforms, since the filter bottle fixing part and the machine head fixing part intersect, the machine head fixing part can exert a supporting force on it, and the part fixed by the fixing structure is not easily deformed, which is not likely to cause sealing failure and can improve the sealing effect.

[0010] Definition: The vertical direction of the filter bottle is defined as the axial direction, and the horizontal direction of the filter bottle is defined as the radial direction.

[0011] Preferably, the filter bottle fixing part and the machine head fixing part intersect in the axial direction, and the intersecting part accounts for at least one-third of the axial section of the machine head fixing part.

[0012] Preferably, the intersecting part accounts for at least one-half of the axial section of the machine head fixing part.

[0013] Preferably, the filter bottle fixing part and the machine head fixing part intersect in the radial direction, and the intersecting part accounts for at least one-third of the radially protruding part of the machine head fixing part.

[0014] Preferably, the intersecting part accounts for at least one-third of the radially protruding part of the machine head fixing part.

[0015] The filter bottle fixing part and the machine head fixing part intersect, and the machine head fixing part can exert a supporting force on it. The part fixed by the fixing structure is not easily deformed, which is not likely to cause sealing failure and can improve the sealing effect. The more the intersecting part is, the larger the supporting area is, the less likely the filter bottle fixing part is to deform, and the better the fixing and sealing effects are.

[0016] Preferably, the fixing structure includes welding fixation, clamping fixation or screwing fixation, and the joint surface of the intersecting part is closed through the fixing structure.

[0017] Preferably, the fixing structure adopts a hoop structure, which includes a hoop body and a locking member. The hoop body is sleeved on the intersecting part of the filter bottle fixing part and the machine head fixing part, and the end of the hoop body is locked and fixed through the locking member. The locking member is provided with an operating handle, and the locking member can be loosened or tightened through the operating handle, so as to open or lock the hoop.

[0018] Preferably, the machine head is provided with a lead-separating structure for preventing metal precipitation, and the machine head and the lead-separating structure are integrally formed.

[0019] Preferably, the filter bottle is processed by an integral stamping or spinning process. Most filter bottles in the prior art adopt a welding forming process. In this kind of filter bottle structure, the weld is prone to cracking and rusting during long-term repeated pressure bearing. The filter bottle processed by the integral stamping or spinning process of the present utility model overcomes this defect.

[0020] A pre-filter adopts the pressure-resistant assembly structure of the pre-filter described above.

[0021] The beneficial effects of the present utility model are as follows: 1) The design of the present utility model is significantly superior to the prior art. When under extreme pressure, even if the filter bottle deforms, since the filter bottle fixing part and the machine head fixing part intersect, the machine head fixing part can exert a supporting force on it, and the part fixed by the fixing structure is not easily deformed, which is not likely to cause sealing failure and can improve the sealing effect; 2) The more the intersecting parts, the larger the supporting area, the less likely the filter bottle fixing part is to deform, and the better the fixing and sealing effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 is a schematic structural view of the prior art;

[0024] Figure 2 is a schematic structural view of the present utility model;

[0025] Figure 3 is Figure 2 a cross-sectional view of

[0026] Figure 4 is a schematic structural view of the pre-filter in Embodiment 2;

[0027] Figure 5 is a schematic structural view of the pre-filter in Embodiment 2.

[0028] In the figure: 1. Machine head, 1A. Machine head assembly part A, 11. Water inlet end, 12. Water outlet end, 13. Filter bottle assembly end, 14. Machine head cavity, 15. Machine head fixing part, 2. Filter bottle, 2A. Filter bottle assembly part A, 2B. Filter bottle assembly part B, 21. Filter bottle fixing part, 3. Hoop structure, 31. Hoop body, 32. Locking part, 33. Operating handle, 4. Filtering structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0030] In the description of the present utility model, it should be understood that with regard to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0031] In the description of the present utility model, if the first and second are described only for the purpose of distinguishing technical features, it should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features or implicitly specifying the sequence relationship of the indicated technical features.

[0032] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0033] Embodiment 1

[0034] As Figure 2-3 shown, the pressure-resistant assembly structure of the pre-filter includes a machine head 1 and a filter bottle 2. The machine head 1 is provided with a raw water end 11, a purified water end 12, a filter bottle assembly end 13 and a machine head cavity 14. The filter bottle 2 is fixedly fitted with the filter bottle assembly end 13. The machine head 1 is provided with a machine head fixing part 15, and the filter bottle 2 is provided with a filter bottle fixing part 21. The filter bottle fixing part 21 and the machine head fixing part 15 at least partially intersect and are fixedly connected through a fixing structure.

[0035] The design of the present utility model is significantly superior to the prior art. When under extreme pressure, even if the filter bottle 2 deforms, since the filter bottle fixing part 21 and the machine head fixing part 15 intersect, the machine head fixing part 15 can exert a supporting force on it, and the part fixed by the fixing structure is not easily deformed and is not likely to cause sealing failure, which can improve the sealing effect.

[0036] Definition: The vertical direction of the filter bottle 2 is defined as the axial direction, and the horizontal direction of the filter bottle 2 is defined as the radial direction.

[0037] In this embodiment, the filter bottle fixing part 21 and the machine head fixing part 15 intersect in the axial direction, and the intersecting part accounts for at least one-third of the axial section of the machine head fixing part 15.

[0038] More preferably, the intersecting part accounts for at least one-half of the axial section of the machine head fixing part 15.

[0039] Another parallel implementation solution is that the filter bottle fixing part 21 and the machine head fixing part 15 intersect in the radial direction, and the intersecting part accounts for at least one-third of the radially protruding part of the machine head fixing part 15.

[0040] Preferably, the intersecting part accounts for at least one-third of the radially protruding part of the head fixing part 15.

[0041] The filter bottle fixing part 21 intersects with the head fixing part 15. The head fixing part 15 can exert a supporting force on it. The fixed part of the fixing structure is not easily deformed and is not likely to cause sealing failure, which can improve the sealing effect. The more the intersecting part, the larger the supporting area, the less likely the filter bottle fixing part 21 is to be deformed, and the better the fixing and sealing effects.

[0042] In this embodiment, the fixing structure includes welding fixation, clamping fixation or screwing fixation, and the joint surface of the intersecting part is enclosed by the fixing structure.

[0043] In this embodiment, the fixing structure adopts a hoop structure 3, which includes a hoop body 31 and a locking member 32. The hoop body 31 is sleeved on the intersecting part of the filter bottle fixing part 21 and the head fixing part 15. The end of the hoop body 31 is locked and fixed by the locking member 32. The locking member 32 is provided with an operating handle 33. By operating the operating handle 33, the locking member 32 can be loosened or tightened, and thus the hoop can be opened or locked. The head 1 is provided with a lead isolation structure to prevent metal precipitation, and the head 1 and the lead isolation structure are integrally formed. The filter bottle 2 is processed by an integral stamping or spinning process. Most of the filter bottles 2 in the prior art adopt a welding forming process. For the filter bottles 2 with such a structure, the welds are prone to cracking and corrosion during long-term repeated pressure bearing. The filter bottle 2 processed by the integral stamping or spinning process of the present invention overcomes this defect.

[0044] Embodiment 2

[0045] As Figure 4-5 shown, a pre-filter includes a filtering structure 4 and adopts the pressure-resistant assembly structure of the pre-filter described in Embodiment 1. The beneficial effects of the present invention are: 1) The design of the present invention is significantly superior to the prior art. Under the condition of ultimate pressure bearing, even if the filter bottle is deformed, since the filter bottle fixing part and the head fixing part intersect, the head fixing part can exert a supporting force on it. The fixed part of the fixing structure is not easily deformed and is not likely to cause sealing failure, which can improve the sealing effect; 2) The more the intersecting part, the larger the supporting area, the less likely the filter bottle fixing part is to be deformed, and the better the fixing and sealing effects.

[0046] The above-described embodiments are only a preferred solution of the present invention, and do not impose any form of limitation on the present invention. There are other variations and modifications without exceeding the technical solutions described in the claims.

Claims

1. The pressure-resistant assembly structure of a pre-filter, comprising a machine head (1) and a filter bottle (2), the machine head (1) is provided with a raw water end (11), a purified water end (12), a filter bottle assembly end (13) and a machine head cavity (14), the filter bottle (2) is fixedly fitted with the filter bottle assembly end (13), and is characterized in that: The machine head (1) is provided with a machine head fixing part (15), and the filter bottle (2) is provided with a filter bottle fixing part (21). The filter bottle fixing part (21) and the machine head fixing part (15) at least partially intersect and are fixedly connected through a fixing structure.

2. The pressure-resistant assembly structure of the pre-filter according to claim 1, wherein: The filter bottle fixing part (21) and the machine head fixing part (15) intersect in the axial direction, and the intersecting part occupies at least one-third of the axial section of the machine head fixing part (15).

3. The pressure-resistant assembly structure of the pre-filter according to claim 2, wherein: The intersecting part occupies at least one-half of the axial section of the machine head fixing part (15).

4. The pressure-resistant assembly structure of the pre-filter according to claim 1, characterized in that: The filter bottle fixing part (21) and the machine head fixing part (15) intersect in the radial direction, and the intersecting part occupies at least one-third of the radially protruding part of the machine head fixing part (15).

5. The pressure-resistant assembly structure of the pre-filter according to any one of claims 1-4, characterized in that: The fixing structure includes welding fixation, clamping fixation or screwing fixation, and the joint surface of the intersecting part is sealed through the fixing structure.

6. The pressure-resistant assembly structure of the pre-filter according to claim 5, characterized in that: The fixing structure adopts a hoop structure (3), which includes a hoop body (31) and a locking member (32). The hoop body (31) is sleeved on the intersecting part of the filter bottle fixing part (21) and the machine head fixing part (15), and the end of the hoop body (31) is locked and fixed through the locking member (32). The locking member (32) is provided with an operating handle (33), and the locking member (32) can be loosened or tightened through the operating handle (33), thereby opening or locking the hoop.

7. The pressure-resistant assembly structure of the pre-filter according to any one of claims 1-4, characterized in that: The machine head (1) is provided with a lead-separating structure for preventing metal precipitation, and the machine head (1) and the lead-separating structure are integrally formed.

8. The pressure-resistant assembly structure of the pre-filter according to any one of claims 1-4, characterized in that: The filter bottle (2) is processed by an integral stamping or spinning forming process.

9. A pre-filter, characterized in that, The pressure-resistant assembly structure of the pre-filter described in any one of claims 1-8 is adopted.

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