High-strength filter plate processing device

Abstract

The utility model relates to the technical field of filter plate processing design, in particular to a high-strength filter plate processing device, which is characterized in that an arc-shaped structure is arranged in a transition area of a sealing surface and a dot surface, the curvature radius R is 5-50mm, and the thickness t1 of the arc-shaped area is 1.2-3.0 times of the thickness t0 of a filter plate main body. An arc transition structure with a specific curvature is arranged in a stress concentration area of the filter plate, and a multi-dimensional optimization scheme of thickness compensation, reinforcing ribs, flow guide holes and the like is matched, so that stress distribution optimization and mechanical property improvement are realized. The technology effectively solves the problem of cracking of a transition area of a traditional filter plate, remarkably prolongs the service life, and is suitable for filter pressing equipment in the fields of chemical engineering, environmental protection and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter plate processing design technical field, specifically a kind of high-strength filter plate processing device. BACKGROUND

[0002] Filter plate of filter press is the core working part of filter press, and its performance directly affects filtering effect and equipment operating efficiency, and the functions of filter plate are as follows: chamber construction function: form closed filter unit in cooperation with filter cloth;

[0003] Pressure bearing function: withstand 0.6-3.0MPa working pressure;

[0004] Medium flow guiding function: realize filtrate directional discharge by built-in flow channel;

[0005] Separation interface function: provide the physical boundary of solid-liquid two-phase separation.

[0006] At present, most of the damaged parts of filter plate are in the transition of sealing surface and dot surface in use, as shown in Figure 1 ,A, the main reason is that filter plate A is the transition of dot surface and sealing surface, and when filter plate single cavity is stressed, dot surface will be deformed upwards (assuming that the feeding direction is upwards), A is the position with the largest tensile force after deformation, which can easily lead to cracking of filter plate at this position, and the dot surface and sealing surface are separated, as shown in Figure 2 .

[0007] Therefore, in view of the above problems, the technical scheme provides a high-strength filter plate processing device. CONTENT OF UTILITY MODEL

[0008] The utility model aims at providing a kind of high-strength filter plate processing device to solve the problems in the above background technology.

[0009] To achieve the above object, the utility model provides the following technical scheme:

[0010] A kind of high-strength filter plate processing device, arc-shaped structure is equipped in the transition of sealing surface and dot surface, curvature radius R=5-50mm, arc region thickness t1 is 1.2-3.0 times of filter plate main body thickness t0.

[0011] As a further scheme of the utility model: arc region is internally provided with reinforcing rib structure.

[0012] As a further scheme of the utility model: reinforcing rib structure is set to rib height 1-3mm, spacing 3-10mm.

[0013] As a further scheme of the utility model: arc region is provided with flow guide hole symmetrically distributed along the center of curvature.

[0014] As a further scheme of the utility model: the flow guide hole diameter is 1-5mm, the opening rate is 15%-30%.

[0015] Compared with the prior art, the utility model has the beneficial effects that: the stress peak value can be reduced by 40%-60% through the setting of the arc area, and the fatigue life is improved by more than 3 times.

[0016] The bending stiffness is improved by 50%-80% through the thickening design of the arc area.

[0017] The material usage can be reduced by 15%-25% under the same strength through the composite structure. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the transition of the filter plate sealing surface and the dot surface under the maximum deformation of tensile force.

[0019] Figure 2 It is a schematic diagram of the transition of the filter plate sealing surface and the dot surface under the tensile force separation.

[0020] Figure 3 It is a force schematic diagram of the transition of the filter plate sealing surface and the dot surface being set as an arc shape. DETAILED DESCRIPTION

[0021] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0022] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0023] In the description of the utility model, it is to be explained that, unless there is definite stipulation and limitation, the terms "mount", "link", "connect" should be understood in broad sense, for example, it can be fixed connection, also can be detachable connection, or integrally connected, it can be mechanical connection, also can be electrical connection, it can be direct connection, also can be indirectly connected through intermediate medium, it can be the intercommunication of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0024] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0025] Please refer to Figures 1-3 A high-strength filter plate processing device, comprising:

[0026] Arc transition die module, the arc transition die module is provided with the circular arc structure (R=5mm-50mm) of the curvature radius in the transition area (the original A place) of filter plate sealing surface and dot face (B place) Figure 3 Arc angle θ=30°-150°, the arc transition area is matched with the taper (taper angle 1°-3°) and is fastened with bolt with die main body;

[0027] Wherein, for the curvature radius R of arc transition die module and stress relation: σ_max=Kt·σ_nominal, wherein stress concentration coefficient Kt reduces with the increase of R (when R increases from 0 to 30mm, Kt reduces from 3.2 to 1.5);

[0028] Arc curvature gradient design: in the R range, the curvature change rate dR / dL≤0.15mm -1 Avoiding secondary stress concentration;

[0029] When forming, for the control of quality, it utilizes mold flow analysis display: arc area filling time shortens 15%-20%, shear rate reduces to 3000-5000s -1 ;

[0030] Variable thickness compensation structure, the thickness t1 of arc structure area and the thickness t0 of filter plate main body ratio: t1 / t0=1.2-3.0;Its thickness is distributed in gradient: transition area thickness t1=1.2-3.0t0 (t0 is filter plate main body thickness 4-15mm);

[0031] The length of thickness transition area is greater than or equal to 3t1, to avoid abrupt interface;

[0032] Composite reinforced cavity, the arc area is internally provided with honeycomb or corrugated rib structure.

[0033] Wherein, the corrugated rib: wave height h=1-3mm, wavelength λ=5-10mm, inclination angle α=45°-60°

[0034] Honeycomb ribs: regular hexagonal cells with side length a = 2-5 mm, wall thickness δ = 0.5-1.2 mm

[0035] Rib depth ratio h / t1 = 0.2-0.5 (preferably 0.3-0.4);

[0036] That is, the corrugated ribs increase the cross-sectional moment of inertia to 1.8-2.5 times (compared to the structure without ribs)

[0037] The honeycomb structure achieves an equivalent elastic modulus E* = E·(ρ / ρ0)^2, and the density ρ is reduced by 15%-25%;

[0038] That is, by coordinating the above three structures, the stress peak value can be reduced from the original 128 MPa to 58 MPa (a decrease of 54.7%);

[0039] Fatigue life: N_f is increased from 1.2×10 5 to 5.8×10 5 ;

[0040] Weight optimization: 18%-22% lighter than the pure thickening scheme.

[0041] In an example of the present application, in a PP material filter plate mold, a 1 / 4 circular arc transition with R = 15 mm is provided, the thickness t1 = 12 mm (t0 = 8 mm), and the injection molding parameters are: melt temperature 220℃, holding pressure 80 MPa. Test results show that no cracks are generated after 200,000 times of pressure cycling.

[0042] As a preferred embodiment of the present application, transverse corrugated ribs with a depth of 2 mm and a pitch of 5 mm are additionally provided inside the circular arc area, and a glass fiber reinforced nylon material is used, so that the bending modulus is increased to 8.5 GPa, which is 65% higher than that of the structure without ribs.

[0043] As a preferred embodiment of the present application, the thickness of the circular arc area gradually changes from the center to both ends according to t1 = 1.5t0→1.2t0, and an R = 25 mm circular arc is used; ANSYS simulation shows that the maximum stress is reduced from 38 MPa to 22 MPa.

[0044] As a preferred embodiment of the present application, flow guide holes with a diameter of 3 mm are uniformly provided in the circular arc area, with a hole pitch of 10 mm and a diamond arrangement. This design increases the filtrate flow rate by 18% under the premise of ensuring strength.

[0045] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A high-strength filter plate processing device, characterized in that, It includes an arc transition mold module, a variable thickness compensation structure, and a composite reinforcement cavity; the arc transition mold module has an arc-shaped structure in the transition area between the sealing surface and the dot surface, with a radius of curvature R = 5-50mm; the thickness t1 of the arc area of ​​the variable thickness compensation structure is 1.2-3.0 times the thickness t0 of the filter plate body; the composite reinforcement cavity has a reinforcing rib structure inside the arc area.

2. The high-strength filter plate processing device according to claim 1, characterized in that, The reinforcing rib structure is configured with a rib height of 1-3mm and a spacing of 3-10mm.

3. The high-strength filter plate processing device according to claim 2, characterized in that, The arc region is provided with guide holes symmetrically distributed along the center of the arc curvature.

4. The high-strength filter plate processing device according to claim 3, characterized in that, The diameter of the guide hole is 1-5mm, and the opening ratio is 15%-30%.

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