Flow guide disc and disc tube type water treatment equipment

Abstract

The utility model discloses a flow guide disc which is provided with a center hole, and the center hole is sequentially provided with protruding teeth, a first supporting table and a sealing ring groove from inside to outside, and the protruding teeth, the first supporting table and the sealing ring groove are distributed in an annular mode. The transition area is arranged between the convex teeth and the first supporting table and comprises first protrusions and second protrusions, the first protrusions are arranged on the radial outer sides of the convex teeth and embedded into the first supporting table, and the second protrusions are arranged on the radial inner side of the first supporting table and located between every two adjacent first protrusions; filleted corner parts are arranged on the two annular sides of the convex teeth, and the filleted corner parts of the adjacent convex teeth are connected to form an arc-shaped transition face tangent to the inner wall of the second protrusion. According to the flow guide disc, the shape of each part at the center hole is ingeniously changed, so that the supporting effect on the sealing ring groove is remarkably improved, the sealing ring groove is effectively prevented from deforming under high pressure, and the risk of sealing failure is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of disc tube type water treatment equipment, and concretely relates to a flow guide disc and disc tube type water treatment equipment. BACKGROUND

[0002] The disc tube type water treatment equipment is a kind of efficient, compact water treatment device, is widely used in sewage treatment, industrial water treatment and drinking water purification etc. Field.Disc tube type water treatment equipment's core component is the disc tube component that is formed by the spacing of multiple circular filter membranes and flow guide discs, and by the reasonable structure design and the high efficiency filtration performance of filter membrane, suspended solids, microorganisms and organic pollutants etc. Impurities in water can be effectively removed.

[0003] The flow guide disc is one of the key components in the disc tube type water treatment equipment, and mainly functions to optimize water flow path, improve filtration efficiency, reduce equipment energy consumption and maintenance frequency.China invention patent CN104147935 B discloses a typical flow guide disc, as shown in the accompanying drawings of its specification Figure 1 、 3 The flow guide disc includes a central hole and a ring-shaped distribution of convex teeth, a first support table and a sealing ring groove sequentially arranged from inside to outside at the central hole. Among them, the convex teeth and the first support table mainly play the role of supporting the sealing ring groove, aiming at preventing the sealing ring groove from deforming, so as to avoid sealing failure. However, the first support table is the weakest part of the entire flow guide disc, for example, for the first support table with a width of 2.1cm and the flow guide disc with a material tensile strength of 60Mpa, simulation can get that the maximum stress of the sealing ring groove is about 53.7Mpa under the pressure of 16Mpa, accounting for 89.5% of the tensile strength of the flow guide disc material, if the temperature is added, the maximum stress of the sealing ring groove may exceed the material tensile strength, i.e. it is easy to deform and cause sealing failure, and sealing failure will cause sewage to enter the central hole after passing through the sealing ring, and then mix with the clear liquid filtered by the membrane, eventually leading to a significant reduction in filtration effect. In addition, the shape of the convex teeth is close to cuboid, and the supporting effect on the sealing ring groove is limited. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a flow guide disc and disc tube type water treatment equipment, to solve the technical problem that the sealing ring groove is easy to deform and cause sealing failure in the prior art.

[0005] In order to achieve the above purpose, according to the first aspect of the utility model, a flow guide disc is provided, and the technical scheme is as follows:

[0006] A flow guide plate is used in a disc tube water treatment device to be stacked with filter membranes at intervals. The flow guide plate has a central hole, and from the inside to the outside, there are annularly distributed protrusions, a first support platform, and a sealing ring groove. It also includes a transition area between the protrusions and the first support platform. The transition area includes a first protrusion located on the radially outer side of the protrusions and embedded in the first support platform, and a second protrusion located on the radially inner side of the first support platform and between two adjacent first protrusions. The circumferential sides of the protrusions are provided with rounded corners, and the rounded corners of adjacent protrusions are connected to form an arc-shaped transition surface tangent to the inner wall of the second protrusion.

[0007] First, the guide plate of this invention, based on existing guide plates, incorporates a transition zone between the first support platform and the protruding teeth. This interaction between the original first support platform and the protruding teeth effectively increases the width of the first support platform, significantly improving the support effect on the sealing ring groove while maintaining the dimensions of the guide groove. Second, by providing rounded corners on both sides of the protruding teeth and connecting adjacent rounded corners to form an arc-shaped transition surface, the radial outer dimension of the protruding teeth is increased, further enhancing the support effect on the sealing ring groove. Therefore, the guide plate of this invention, by cleverly altering the shape of the components at the central hole, significantly improves the support effect on the sealing ring groove, effectively preventing deformation of the sealing ring groove under high pressure and avoiding the risk of seal failure.

[0008] As a further improvement to the aforementioned guide plate: the width of the first support platform is 2-2.5cm, and the inner diameter is 42-46cm.

[0009] As a further improvement to the aforementioned guide plate: the first protrusion is semi-circular with a diameter of 3-4 cm.

[0010] As a further improvement to the aforementioned guide plate: the arc-shaped transition surface is a semi-circular transition surface with a diameter of 3-5 cm.

[0011] As a further improvement to the aforementioned guide plate: the inner diameter of the protruding teeth is 30-35 cm, and each guide plate has 6-10 protruding teeth. The sides of adjacent protruding teeth are parallel and tangent to the arc-shaped transition surface; the gap width between adjacent protruding teeth is 3-5 cm. Compared with the traditional guide plate's 18-teeth distribution and approximately 2 cm gap width, this invention significantly reduces the number of protruding teeth and increases the gap width between adjacent protruding teeth, ensuring good support for the sealing ring groove while achieving good clear liquid guiding effect.

[0012] The transition zone formed by the above dimensions not only has little impact on the clear liquid guiding effect, but also provides excellent support for the sealing ring groove, and is easy to process and manufacture.

[0013] As a further improvement to the aforementioned guide plate: the radial inner side of the protruding teeth is provided with a recess facing outward; thus, the recess can serve as the location area for the protrusions formed by the residual material after the mold is demolded during the production of the guide plate, thereby avoiding these protrusions from affecting the assembly of the central tube.

[0014] As a further improvement to the aforementioned guide plate: on one side of the central hole along the axial direction, the protruding teeth extend 2.5–3 cm beyond the first support platform, and on the other side of the central hole along the axial direction, a groove of corresponding depth is formed. Thus, the cooperation between the protruding teeth and the groove enables rapid assembly of the guide plate and the filter membrane.

[0015] As a further improvement to the aforementioned guide plate, it also includes a second support platform, a guide groove, and an outer rim, which are sequentially arranged outside the sealing ring groove. The guide groove is provided with guide protrusions and guide slots.

[0016] As a further improvement to the aforementioned guide plate: the second support platform has a platform and an inclined platform connected in sequence to the radially outer side of the sealing ring groove. The radially inner side of the platform has a third protrusion distributed in a ring shape, and the inclined platform has an angle of 35° to 45° with the horizontal plane. This improves the support for the sealing ring groove and adjacent guide plates, while also reducing stress concentration and preventing damage.

[0017] To achieve the above objectives, according to a second aspect of this utility model, a disc tube type water treatment device is also provided, the technical solution of which is as follows:

[0018] A disc tube type water treatment device includes a filter membrane and a flow guide plate as described in the first aspect above, wherein the flow guide plate and the filter membrane are stacked at intervals.

[0019] It is evident that the flow guide plate and disc tube water treatment equipment of this utility model have a simple structure, are easy to process and manufacture, and provide good support for the sealing ring groove. They effectively solve the technical problem that the sealing ring groove is easily deformed and causes sealing failure in the prior art. Even when used under high temperature and high pressure for a long time, they can maintain an excellent retention rate and have strong practicality.

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. Attached Figure Description

[0021] The accompanying drawings, which form part of this utility model, are used to aid in understanding this utility model. The contents provided in the drawings and their related descriptions in this utility model can be used to explain this utility model, but do not constitute an improper limitation of this utility model.

[0022] In the attached diagram:

[0023] Figure 1 This is a schematic diagram of an embodiment of the flow guide plate of this utility model.

[0024] Figure 2 for Figure 1 A sectional view along line AA.

[0025] Figure 3 for Figure 1 BB-direction sectional view.

[0026] Figure 4 for Figure 1 A magnified view of a portion of the image.

[0027] Figure 5 for Figure 4 CC-direction sectional view.

[0028] The relevant markings in the above figures are:

[0029] 100-convex tooth, 110-rounded corner, 120-recess, 130-groove, 200-transition area, 210-first protrusion, 220-second protrusion, 300-first support platform, 400-sealing ring groove, 500-second support platform, 510-platform, 511-third protrusion, 520-sloping platform, 600-guide groove, 610-guide protrusion, 620-guide slot, 700-outer rim. Detailed Implementation

[0030] The present invention will now be clearly and completely described in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that:

[0031] The technical solutions and features provided in the various parts of this utility model, including the following description, can be combined with each other without conflict.

[0032] Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the protection scope of the present invention.

[0033] Regarding the terminology and units used in this utility model: The terms "comprising," "having," and any variations thereof in the specification, claims, and related parts of this utility model are intended to cover non-exclusive inclusion.

[0034] Figure 1This is a schematic diagram of an embodiment of the flow guide plate of this utility model. Figure 2 for Figure 1 A sectional view along line AA. Figure 3 for Figure 1 BB-direction sectional view. Figure 4 for Figure 1 A magnified view of a portion of the image. Figure 5 for Figure 4 CC-direction sectional view.

[0035] like Figures 1-5 The guide plate shown is used in a disc tube water treatment device to be stacked with filter membranes at intervals. The guide plate has a central hole, and from the inside to the outside, it is provided with annularly distributed protrusions 100, a transition zone 200, a first support platform 300, a sealing ring groove 400, a second support platform 500, a guide groove 600, and an outer rim 700. The guide groove 600 is provided with guide protrusions 610 and guide slots 620. The transition zone 200 includes a first protrusion 210 located radially outside the protrusions 100 and embedded in the first support platform 300, and a second protrusion 220 located radially inside the first support platform 300 and between two adjacent first protrusions 210. The protrusions 100 have rounded corner portions 110 on both circumferential sides. When the rounded corner portions 110 of adjacent protrusions 100 are connected, they form an arc-shaped transition surface tangent to the inner wall of the second protrusion 220.

[0036] The first support platform 300 has an inner diameter R1 of 44.2 cm and an outer diameter R2 of 48.8 cm. Therefore, the width of the first support platform 300 is 2.3 cm.

[0037] The first protrusion 210 is semi-circular, and its diameter R3 is 3.5cm.

[0038] The arc-shaped transition surface is a semi-circular transition surface with a diameter R4 of 4cm.

[0039] The inner diameter R5 of the protruding tooth 100 is 31.3 cm, and the outer diameter R6 is 40.71 mm.

[0040] Each guide plate is provided with 8 protrusions 100. The sides of adjacent protrusions 100 are parallel and tangent to the arc-shaped transition surface. The gap width L between adjacent protrusions 100 is 3 to 5 cm.

[0041] The radially inner side of the protrusion 100 is provided with an outwardly facing recess 120.

[0042] On one side of the central hole along the axial direction, the protruding tooth 100 extends 3.1 cm beyond the first support platform 300 by a height H. On the other side of the central hole along the axial direction, a groove 130 of corresponding depth is formed.

[0043] The second support platform 500 has a platform 510 and an inclined platform 520 that are connected to the outer radial side of the sealing ring groove 400 in sequence. The inner radial side of the platform 510 has a third protrusion 511 distributed in an annular pattern. The angle ∠ between the inclined platform 520 and the horizontal plane is 35° to 45°.

[0044] The disc tube water treatment device of this utility model has a similar structure and working principle to the sewage diversion and filtration device disclosed in CN104147935B. The main difference between the disc tube water treatment device of this utility model and the one disclosed in CN104147935B is that the diversion disc is used.

[0045] Verification revealed that, under conditions of 45℃~50℃ and 150±5 bar pressure, traditional disc tube water treatment equipment, after intermittent operation for approximately 3 months (±10 days), exhibited a sharp increase in the conductivity of the product water discharged from the central tube. The retention rate abruptly dropped from approximately 98.5% to approximately 70%, indicating product failure. Disassembly of the disc tube water treatment equipment revealed significant deformation of the sealing ring grooves on the guide plate, indicating O-ring seal failure and resulting in a substantial decrease in the retention rate.

[0046] Under the same temperature range of 45℃~50℃ and pressure of 150±5 bar, the conductivity of the product water discharged from the central pipe of this invention remained stable after about 9 months (±10 days) of operation, and the average retention rate still reached about 96.6%. Disassembly of the disc tube water treatment equipment revealed that the groove size of the sealing ring of the guide plate did not change significantly, and the sealing performance of the O-ring was good.

[0047] The foregoing has described the relevant content of this utility model. Those skilled in the art will be able to implement this utility model based on these descriptions. All other embodiments obtained by those skilled in the art based on the above description of this utility model without inventive effort should fall within the protection scope of this utility model.

Claims

1. A flow guide plate, used in a disc tube type water treatment device, stacked at intervals with filter membranes, the flow guide plate having a central hole, and the central hole having, from the inside to the outside, annularly distributed protrusions (100), a first support platform (300), and a sealing ring groove (400); characterized in that: It also includes a transition region (200) between the tooth (100) and the first support platform (300), the transition region (200) including a first protrusion (210) located on the radially outer side of the tooth (100) and embedded in the first support platform (300) and a second protrusion (220) located on the radially inner side of the first support platform (300) and between two adjacent first protrusions (210); The convex teeth (100) have rounded corner portions (110) on both sides in the circumferential direction. When the rounded corner portions (110) of adjacent convex teeth (100) are connected, they form an arc-shaped transition surface that is tangent to the inner wall of the second protrusion (220).

2. The guide plate as described in claim 1, characterized in that: The width of the first support platform (300) is 2 to 2.5 cm, and the inner diameter is 42 to 46 cm.

3. The guide plate as described in claim 1, characterized in that: The first protrusion (210) is semi-circular with a diameter of 3-4 cm.

4. The guide plate as described in claim 1, characterized in that: The arc-shaped transition surface is a semi-circular transition surface with a diameter of 3 to 5 cm.

5. The guide plate as described in claim 1, characterized in that: The inner diameter of the protruding tooth (100) is 30-35cm. Each guide plate is provided with 6-10 protruding teeth (100). The sides of adjacent protruding teeth (100) are parallel and tangent to the arc-shaped transition surface respectively. The gap width between adjacent protruding teeth (100) is 3-5cm.

6. The guide plate as described in claim 1, characterized in that: The radially inner side of the protrusion (100) is provided with an outwardly facing recess (120).

7. The guide plate as described in claim 1, characterized in that: On one side of the central hole along the axial direction, the protruding tooth (100) extends 2.5 to 3 cm beyond the first support platform (300), and on the other side of the central hole along the axial direction, a groove (130) of corresponding depth is formed.

8. The guide plate as described in claim 1, characterized in that: It also includes a second support platform (500), a flow guide groove (600) and an outer rim (700) arranged sequentially on the outside of the sealing ring groove (400), wherein the flow guide groove (600) is provided with flow guide protrusions (610) and flow guide slits (620).

9. The guide plate as described in claim 8, characterized in that: The second support platform (500) has a platform (510) and an inclined platform (520) that are connected to the outer side of the sealing ring groove (400) in sequence. The platform (510) has a third protrusion (511) distributed in a ring on the inner side. The inclined platform (520) has an angle of 35 to 45° with the horizontal plane.

10. A disc tube type water treatment device, including a filter membrane, characterized in that: It also includes the flow guide plate as described in any one of claims 1-9, wherein the flow guide plate and the filter membrane are stacked at intervals.

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