Filter element spin welding structure capable of preventing glue overflow and filter element

Abstract

The utility model relates to the technical field of water purifier filter elements, in particular to an anti-glue-overflow filter element spin welding structure and a filter element. An annular groove is formed in the periphery of the filter cover; the annular groove comprises a first welding wall, a first top and a second welding wall; a rotary melting step is arranged on the second welding wall; the groove width of the annular groove is gradually increased from top to bottom; an opening of the filter cartridge is upward; a welding step and a convex part are arranged on the peripheral wall of the filter cartridge; a material blocking step and a guiding step are sequentially arranged on the outer side wall of the convex part from bottom to top; a stopping step is arranged on the inner side wall of the convex part; the filter cartridge and the filter cover are fixed through rotary fusion welding; and the material blocking step is arranged, so that when the injected rotary melt glue is about to flow back and overflow, the reverse flow rotary melt glue can be blocked and cannot overflow out of the first glue overflowing groove, and the problem that the rotary melt glue overflows out of the filter cover and needs to be reprocessed is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of water purifiers, and more specifically, to a filter core spin welding structure and a filter core for preventing glue overflow. Background Art

[0002] In the water purifier filter elements currently in use, the filter cover and the filter cartridge are usually welded together by spin-melting, wherein the glue injection gaps where the filter cover and the filter cartridge are buckled are often unidirectional and straight. When welding and injecting glue, the spin-melt glue may become unstable due to too much or too little spin-melt glue injected into the gap, shifting during the processing process, etc., or the spin-melt glue may overflow out of the gap, causing the appearance of the filter element to be damaged and unsightly. The overflowed part needs to be reprocessed again, or a decorative cover needs to be set at the gap to cover the overflowed part. The processing and production steps are cumbersome, and the increase in processing steps leads to low processing and production efficiency of the water purifier filter element. For example, patent publication number CN219091405U discloses a filter element welding structure with this problem; therefore, we propose a filter element spin welding structure that prevents overflow, has good spin-melting effect, has simple processing steps, and does not require additional fixings and positioning parts. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a filter element spin welding structure and a filter element with anti-overflow glue, so as to solve the problems existing in the above-mentioned background technology.

[0004] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a filter element spin welding structure and filter element for preventing glue overflow, comprising: a filter cover and a filter cartridge; an annular groove is provided on the outer periphery of the filter cover; the annular groove comprises: a first welding wall, a first top, and a second welding wall; a spin melting step is provided on the second welding wall for preventing poor spin melting; the groove width of the annular groove gradually increases from top to bottom; the filter cartridge opening faces upward; a welding step and a convex portion are provided on the outer peripheral wall of the filter cartridge; the outer side wall of the convex portion is provided with: a material blocking step for preventing the spin melt glue from overflowing during spin melting welding, and a guiding step for guiding the overflow of the molten glue; a stop step is provided on the inner side wall of the convex portion; the filter cartridge and the filter cover are fixed by spin melting welding.

[0005] Optionally, when the filter cover and the filter cartridge are buckled together, the outer periphery of the filter cover cooperates with the welding step to form a glue filling port for injecting spin-melt glue.

[0006] Optionally, when the filter cover and the filter cartridge are buckled together, the first welding wall and the outer side wall of the protrusion cooperate to form a first glue overflow groove for guiding the spin-melt glue.

[0007] Optionally, when the filter cover and the filter cartridge are buckled together, the first welding wall and the material stopping step cooperate to form a material stopping groove for preventing the spin-melt adhesive from flowing back; the material stopping groove is located at the bottom of the first glue overflow groove.

[0008] Optionally, when the filter cover and the filter cartridge are buckled together, the first top portion and the top portion of the protrusion cooperate to form a first spin-melt groove for spin-melting the top portion of the filter cartridge and the filter cover.

[0009] Optionally, when the filter cover and the filter cartridge are buckled together, the second welding wall and the inner side wall of the protrusion cooperate to form a second spin-melting groove for spin-melting the side surface of the filter cartridge and the filter cover.

[0010] Optionally, when the filter cover and the filter cartridge are buckled together, the second welding wall and the stop step cooperate to form a stop groove for preventing the flow of the spin-melt adhesive; the stop groove is located at the bottom of the second spin-melt groove.

[0011] Optionally, the second welding wall gradually inclines from top to bottom toward the axial direction of the filter cover.

[0012] A filter element comprises the filter element spin welding structure of the anti-overflow glue.

[0013] In summary, the utility model has the following beneficial effects:

[0014] 1. A material blocking step is set. When the injected spin-melt adhesive is about to overflow in reverse flow, the setting of the material blocking step will block the reverse flow of the spin-melt adhesive so that it will not overflow from the first overflow adhesive groove, thereby preventing the adhesive from overflowing to the outside of the filter cover and causing the need for reprocessing.

[0015] 2. A guide step is provided to effectively guide the spin-melt adhesive into the first spin-melt groove and the second spin-melt groove in sequence when injecting the spin-melt adhesive, so that the flow rate of the spin-melt adhesive therein is stable, and the spin-melt adhesive will not flow too fast to cause poor spin-melt effect, or too slowly to cause blockage.

[0016] 3. A spin melting step is provided to prevent the spin melting adhesive from being poorly melted during the spin melting process.

[0017] 4. A stop step is provided, and the stop groove formed by it can effectively block the flow of the spin-melt adhesive, preventing it from penetrating into the filter cartridge and causing contamination of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the main structure of the utility model after assembly;

[0020] Figure 3 It is a structural cross-sectional view of the filter cover of the utility model;

[0021] Figure 4 It is a partial structural cross-sectional view of the filter cartridge of the utility model;

[0022] Figure 5 yes Figure 2 A schematic diagram of the specific structure of part A;

[0023] In the figure: 1. filter cover; 2. filter cartridge; 3. annular groove; 31. first welding wall; 311. first glue overflow groove; 32. first top; 321. first spin melting groove; 33. second welding wall; 331. second spin melting groove; 4. spin melting step; 5. welding step; 51. glue filling port; 6. convex portion; 7. material blocking step; 71. material blocking groove; 8. guide step; 9. stop step; 91. stop groove. DETAILED DESCRIPTION

[0024] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. Several embodiments of the utility model are given in the accompanying drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0025] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0026] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. The terms "vertical", "horizontal", "left", "right", "above", "below" and similar expressions are for illustrative purposes only, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] The utility model provides a filter element spin welding structure and a filter element for preventing glue overflow, such as Figure 1 As shown, it includes: a filter cover and a filter cartridge; an annular groove is opened on the outer periphery of the filter cover; the annular groove includes: a first welding wall, a first top, and a second welding wall; a spin melting step is arranged on the second welding wall to prevent poor spin melting; the groove width of the annular groove gradually increases from top to bottom; the filter cartridge opening faces upward; a welding step and a convex portion are arranged on the outer peripheral wall of the filter cartridge; the outer side wall of the convex portion is sequentially provided with: a material blocking step for preventing the spin melt glue from overflowing during spin melting welding, and a guiding step for guiding the overflow of the molten glue; a stop step is arranged on the inner side wall of the convex portion; the filter cartridge and the filter cover are fixed by spin melting welding.

[0029] Specifically, the filter cover and the filter cartridge are fixed by spin welding; the material blocking step arranged on the filter cartridge can prevent the situation that the amount of spin-melt glue injected is too large and causes backflow overflow during the spin melting process; the guide step arranged on the filter cartridge is used to make the spin-melt glue flow smoothly through the first overflow glue groove, the first spin melting groove and the second spin melting groove in sequence, so as to achieve a better spin melting effect; the stop step arranged on the filter cartridge can effectively prevent the spin-melt glue from penetrating into the filter element and causing contamination of the filter element; this arrangement can effectively prevent the spin-melt glue from overflowing and backflowing while ensuring the spin melting effect. At the same time, there is no need to install additional positioning parts and fixing parts. The spin melting welding process can be carried out by simply buckling the filter cover and the filter element together, which reduces the number of steps and is more efficient.

[0030] Furthermore, when the filter cover and the filter cartridge are buckled together, the outer periphery of the filter cover cooperates with the welding step to form a glue injection port for injecting spin-melt glue.

[0031] Specifically, the heated spin-melt adhesive is injected into the first glue overflow groove through the glue injection port formed by the welding step and the filter cover; the welding step is processed to resist high temperature to avoid deformation and damage caused by high temperature when the high-temperature spin-melt adhesive is injected for a long time.

[0032] Furthermore, when the filter cover and the filter cartridge are buckled together, the first welding wall and the outer side wall of the protrusion cooperate to form a first glue overflow groove for guiding the spin-melt glue.

[0033] Specifically, when the spin-melt glue enters the first glue overflow groove through the glue filling port, it will flow into the first spin-melt groove through the guide of the first glue overflow groove; the guide step is located at the top of the first glue overflow groove, and the guide step has a certain inclination, and the inclination direction is toward the axial direction of the filter cartridge, which can effectively alleviate the situation where the spin-melt glue flows too fast at the corner and collides with the inner wall, thereby controlling the flow rate of the spin-melt glue in the first glue overflow groove to a certain extent, making its flow rate more stable.

[0034] Furthermore, when the filter cover and the filter cartridge are buckled together, the first welding wall and the material blocking step cooperate to form a material blocking groove for preventing the spin-melt adhesive from flowing back; the material blocking groove is located at the bottom of the first adhesive overflow groove.

[0035] Specifically, the material blocking step has a certain inclination, and the inclination direction is toward the axial direction of the filter cartridge. Due to the setting of the material blocking step, the width of the first overflow glue groove is greater than the width of the material blocking groove; when the spin-melt glue flows forward from the glue filling port, it will flow through the material blocking groove with a smaller width and the material blocking groove with a larger width in sequence. The material blocking groove with a smaller width also controls the flow rate of the spin-melt glue to a certain extent, making it slower and more stable, and the spin-melting effect is better; if the spin-melt glue flows in the opposite direction, because the width of the material blocking groove is smaller than the first overflow glue groove, the reverse flow of the spin-melt glue will collide with the material blocking step and will not flow out of the material blocking groove, thereby preventing the spin-melt glue from overflowing in the reverse direction.

[0036] Further, when the filter cover and the filter cartridge are buckled together, the first top portion and the top portion of the protrusion cooperate with each other to form a first spin-melting groove for spin-melting the top portion of the filter cartridge and the filter cover.

[0037] Specifically, a first spin melting groove is provided to fix the top of the filter cartridge and the filter cover by spin melting welding, thereby increasing the tensile strength of the water purifier filter element in a direction perpendicular to the ground and making the overall structural strength of the water purifier filter element stronger.

[0038] Furthermore, when the filter cover and the filter cartridge are buckled together, the second welding wall and the inner side wall of the protrusion cooperate with each other to form a second rotational melting groove for rotationally melting the side surface of the filter cartridge and the filter cover.

[0039] Specifically, a second spin melting groove is provided to spin weld and fix the side wall of the filter cartridge and the filter cover, thereby increasing the tensile strength of the water purifier filter element in a direction parallel to the ground, making the overall structural strength of the filter cover and the filter cartridge better and the welding fixation better.

[0040] Furthermore, when the filter cover and the filter cartridge are buckled together, the second welding wall and the stop step cooperate to form a stop groove for preventing the flow of the spin-melt adhesive; the stop groove is located at the bottom of the second spin-melt groove.

[0041] Specifically, after flowing through the second rotary melting groove, the spin-melt adhesive will continue to flow downward. In order to prevent the spin-melt adhesive from flowing and infiltrating into the filter element, a stop groove is provided to cut off the flow of the spin-melt adhesive. The rotary melting step is located on one side of the stop groove, and its downward depression direction is the axial direction of the Korean filter cover, which is used to expand the groove width to avoid the poor rotary melting of the spin-melt adhesive and cause unstable welding. After increasing the groove width, even if part of the spin-melt adhesive is not fully covered and causes poor rotary melting, the remaining spin-melt adhesive can enter the poorly rotary-melted area through the expanded groove width to fill the uncovered area, thereby solving the problem of poor rotary melting.

[0042] Furthermore, the second welding wall gradually inclines from top to bottom toward the axial direction of the filter cover.

[0043] Specifically, the second welding wall gradually inclines from top to bottom, so that the groove width of the second rotary melting groove gradually increases from top to bottom, presenting a gentle slope, which conforms to the liquid flow scenario, so that the second rotary melting groove is gradually filled with rotary melting glue from bottom to bottom, and the rotary melting effect is better. Compared with the traditional rotary melting groove, it can effectively avoid incomplete and insufficient filling, resulting in poor rotary melting effect.

[0044] A filter element comprises the above-mentioned filter element spin welding structure for preventing glue overflow.

[0045] In the specific implementation process, when performing the spin melting welding process, it is only necessary to buckle the filter cover and the filter cartridge together, without the need for additional mounting parts and fixing parts, and the operation steps are simple and quick;

[0046] When the filter cover and the filter cartridge are in the state of being buckled, the heated spin-melt glue is injected through the glue filling port, and the spin-melt glue enters the material blocking groove after passing through the glue filling port. Since the groove width of the material blocking groove is smaller than the width of the glue filling port, the flow rate of the spin-melt glue will be reduced at this time, and it will enter the first overflow glue groove after passing through the material blocking groove smoothly, and then be guided to the first spin-melt groove through the first overflow glue groove. When passing through the corner, due to the setting of the guide step, the turning of the spin-melt glue can be made smoother and faster. After passing through the first spin-melt groove, the corner enters the second spin-melt groove, and gradually fills up the second spin-melt groove. After filling up the second spin-melt groove, the first spin-melt groove is gradually filled up, and finally the first overflow glue groove is filled up, and the spin-melt welding of the filter cover and the filter cartridge is completed;

[0047] During the spin-melt welding process, if the spin-melt adhesive backflows, since the width of the blocking groove is smaller than the first overflow groove, the backflowing spin-melt adhesive will collide with the blocking step and will not flow out of the blocking groove, thereby preventing the spin-melt adhesive from backflowing and overflowing.

[0048] The utility model discloses a filter element spin welding structure and filter element for preventing glue overflow, which are provided with a material blocking step. When the injected spin-melt glue is about to overflow in reverse flow, the setting of the material blocking step will block the reverse flow of the spin-melt glue, so that it will not overflow from the first overflow glue groove, and the overflow to the outside of the filter cover will be prevented, which will cause the problem of needing reprocessing; a guiding step is provided, and when the spin-melt glue is injected, the spin-melt glue can be effectively guided to the first spin-melt groove and the second spin-melt groove in turn, so that the flow rate of the spin-melt glue therein is stable, and will not be too fast to cause poor spin-melting effect, or too slow to cause blockage, etc.; a spin-melting step is provided to prevent the spin-melt glue from spinning poorly during the spin-melting process; a stopping step is provided, and the stopping groove formed by the stopping step can effectively block the flow of the spin-melt glue, and prevent it from penetrating into the filter cartridge, which will cause the filter element to be contaminated.

[0049] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A filter element spin welding structure for preventing glue overflow, characterized in that: include: Filter cover and filter cartridge; An annular groove is formed on the outer periphery of the filter cover; the annular groove comprises: a first welding wall, a first top, and a second welding wall; The second welding wall is provided with a spin melting step for preventing poor spin melting; the groove width of the annular groove gradually increases from top to bottom; The filter cartridge opening faces upward; a welding step and a convex portion are arranged on the outer peripheral wall of the filter cartridge; the outer side wall of the convex portion is provided with: a material blocking step for preventing the molten glue from overflowing during the molten glue welding, and a guide step for guiding the molten glue to overflow; a stop step is arranged on the inner side wall of the convex portion; The filter cartridge and the filter cover are fixed by spin welding.

2. The anti-overflow filter spin welding structure according to claim 1, characterized in that: When the filter cover and the filter cartridge are buckled together, the outer periphery of the filter cover cooperates with the welding step to form a glue injection port for injecting spin-melt glue.

3. The anti-overflow filter spin welding structure according to claim 1, characterized in that: When the filter cover and the filter cartridge are buckled together, the first welding wall and the outer side wall of the protrusion cooperate to form a first glue overflow groove for guiding the spin-melt glue.

4. The anti-overflow glue filter spin welding structure according to claim 3, characterized in that: When the filter cover and the filter cartridge are buckled together, the first welding wall and the material blocking step cooperate to form a material blocking groove for preventing the spin-melt adhesive from flowing back; the material blocking groove is located at the bottom of the first adhesive overflow groove.

5. The anti-overflow filter spin welding structure according to claim 1, characterized in that: When the filter cover and the filter cartridge are buckled together, the first top portion and the top portion of the protrusion cooperate with each other to form a first spin-melting groove for spin-melting the top portion of the filter cartridge and the filter cover.

6. The anti-overflow filter spin welding structure according to claim 1, characterized in that: When the filter cover and the filter cartridge are buckled together, the second welding wall and the inner side wall of the protrusion cooperate with each other to form a second spin-melting groove for spin-melting the side surface of the filter cartridge and the filter cover.

7. The anti-overflow filter spin welding structure according to claim 6, characterized in that: When the filter cover and the filter cartridge are buckled together, the second welding wall and the stop step cooperate to form a stop groove for preventing the flow of the spin-melt adhesive; the stop groove is located at the bottom of the second spin-melt groove.

8. The anti-overflow filter spin welding structure according to claim 1, characterized in that: The second welding wall gradually inclines from top to bottom toward the axial direction of the filter cover.

9. A filter element, characterized in that: A filter element spin welding structure comprising the anti-overflow glue as described in any one of claims 1 to 8.

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