Filter frame, filter element and gluing method of filter element

Abstract

The invention discloses a filter element frame, a filter element and a gluing method for the filter element. The method is as follows: prepare a core material and a filter element frame, the filter element frame includes a gluing part; place the filter element frame and the core material in a mold, and the filter element frame Located below the core material, then fill the colloid on the top surface of the lower mold, and extend the colloid to the glued part of the filter element frame and the outer wall of the core material, and then press an upper mold towards the lower mold to push the colloid Cut into an inner rubber part and an outer rubber part, the inner rubber part is attached to the filter element frame and the core material and pushed between the upper rubber part and the core material, so that the colloid will cover the upper rubber part to improve the colloid and the core material The adhesive area of ​​the filter element frame and the pressure of the upper mold can strengthen the adhesive effect; by pressing down to cut off the excess colloid and shape the required colloid, it is not only fast but also accurate, uniform and beautiful.

Description

technical field [0001] The invention relates to a filter core for separating suspended particles in a fluid, a frame thereof, and a gluing method for the filter core. Background technique [0002] The filter of prior art comprises a housing and a filter element, please refer to Figure 12 and Figure 13 As shown, the filter element includes a core material 91, a filter element frame 92 and a rubber layer 93; the filter element frame 92 is sleeved on one end of the core material 91, and the two are fixed and closed by glue (colloid 94) The gap between the filter element frame 92 and the core material 91; the rubber layer 93 is coated on the filter element frame 92, and is sandwiched between the filter element frame 92 and the housing axially or radially to close the gap between the filter element frame 92 and the housing Because the gap between the core material 91 and the filter core frame 92 and the gap between the filter core frame 92 and the housing have been closed, dur...

AI Technical Summary

Problems solved by technology

[0004] When the filter element frame 92 of the prior art is glued together with the core material 91, first the filter element frame 92 is sleeved outside the core material 91, and then a glue gun is inserted into the opening periphery of the filter element frame 92 and the outer wall surface of the core material 91. Between, and around a circle to glue to close the gap between the filter element frame 92 and the core material 91, and at the same time adhere and fix the filter element frame 92 and the core material 91; however, the disadvantages of this combination method are:

[0005] First, the glue gun needs to accurately penetrate into the gap between the filter element frame 92 and the core material 91, and also move around in a circle, so the action of the glue gun is complicated and must be done manually, and it also takes more time due to the complexity of the action. time

[0006] Second, as mentioned above, due to the complicated action of the glue gun, it is difficult to control, which may lead to uneven gluing, and may even cause the glue 94 to overflow and look unsightly

[0007] Third, such sealing and adhesion effects are not good, and the colloid 94 may not flow down to the bottom of the gap due to various factors such as insufficient pressure, thereby reducing the adhesion effect

[0008] Fourth, the colloid 94 is only adhered to the inner wall surface of the opening periphery of the filter element frame 92 and the outer wall surface of the core material 91. The adhesion area of ​​the colloid 94 to the filter element frame 92 and the core material 91 is limited, so the adhesion effect is poor.

[0010] First, the rubber layer 93 cannot be reused, so it will cause waste and is not environmentally friendly

[0011] Second, due to the high hardness of thermoplastic rubber, it takes a lot of effort to install it in the housing, so it is not easy to install

[0012] Third, also because the hardness of the thermoplastic rubber is relatively high, the compression amount of the rubber layer 93 cannot be designed too large (that is, the thickness of the rubber layer 93 cannot be made too thick), otherwise it will further increase the difficulty of being installed in the housing; However, a small amount of compression will also result in a smaller tolerance, so it is less likely to be effectively sealed and may cause leakage; especially for plastic shells, the larger the volume, the greater the tolerance, and the more resistant possibility of leakage

[0013] Fourth, see Figure 14 As shown, if the core material 91 and the filter element frame 92 are racetrack-shaped, the plane sides of the two long sides of the core material 91 will be easily squeezed inward by the arc-shaped sides of the two short sides because of insufficient stress. Finally, the core material 91 and the filter element frame 92 will be deformed like peanuts; if the compression amount of the rubber layer 93 is too small at this time, the rubber layer 93 will not be able to fit the inner wall of the housing at the peanut-shaped deformation. Effective sealing can lead to leakage; moreover, the reaction force generated by the high hardness of thermoplastic rubber can lead to more serious peanut-shaped deformation

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