Screen grid for high plan sieve and high plan sieve with the screen grid

Abstract

The present invention discloses a screen grid for a high plan screen and a high plan screen with the screen grid, wherein the screen grid for the high plan screen comprises: a screen frame, the screen frame comprises a first plate and a second plate opposite to each other in a first direction and a third plate and a fourth plate opposite to each other in a second direction, the first plate, the third plate, the second plate and the fourth plate being connected in sequence; an outlet plate, the first end of the outlet plate being connected to the inner side surface of the first plate and the second end being connected to the inner side surface of the second plate; and a screen surface grid, the screen surface grid comprises a fifth plate, a sixth plate, a seventh plate and an eighth plate, the fifth plate, the seventh plate, the sixth plate and the eighth plate being connected in sequence, the fifth plate cooperates with the first plate to form a first sealing portion, the sixth plate cooperates with the second plate to form a second sealing portion, the seventh plate cooperates with the third plate to form a third sealing portion, and the eighth plate cooperates with the outlet plate to form a fourth sealing portion. The screen grid according to the embodiment of the present invention has the advantages of a tight structure and no spillage of the screened material.

Description

Technical Field

[0001] The invention relates to a screen grid used for a high plan screen and also relates to a high plan screen with the screen grid. Background Art

[0002] The high plan sieve is one of the important production equipment in the flour making process. The high plan sieve usually drives the screen box to do reciprocating motion or circular motion through a transmission mechanism, so that the mixed materials can be screened according to the requirements through different sieve paths of the sieve grid. The existing high plan sieve has the defect of powder leakage. Summary of the invention

[0003] The purpose of the present invention is to overcome the problems existing in the prior art and to provide a screen grid for a high plan sieve and a high plan sieve having the screen grid.

[0004] The present application is made based on the inventor's discovery and understanding of the following facts and problems: Due to the gaps between the screen surface grid and the screen frame and between the screen surface grid and the outlet plate of the existing screen grid, the existing screen grid has the defect of powder leakage.

[0005] In order to achieve the above-mentioned purpose, the first aspect of the present invention provides a screen grid for a high plan screen, the screen grid for the high plan screen comprising: a screen frame, the screen frame comprising a first plate and a second plate opposite to each other in a first direction and a third plate and a fourth plate opposite to each other in a second direction, the first plate, the third plate, the second plate and the fourth plate being connected in sequence, wherein the first direction is perpendicular to the second direction; an outlet plate, the first end of the outlet plate being connected to the inner side surface of the first plate, and the second end of the outlet plate being connected to the inner side surface of the second plate; and a screen surface grid, the screen surface grid comprising a fifth plate and a sixth plate opposite to each other in the first direction and a seventh plate and an eighth plate opposite to each other in the second direction, the fifth plate, the seventh plate, the sixth plate and the eighth plate being connected in sequence, wherein the fifth plate cooperates with the first plate to form a first sealing portion, the sixth plate cooperates with the second plate to form a second sealing portion, the seventh plate cooperates with the third plate to form a third sealing portion, and the eighth plate cooperates with the outlet plate to form a fourth sealing portion.

[0006] The screen grid according to the embodiment of the present invention has the advantages of tight structure and the screened material will not escape.

[0007] Preferably, the first plate includes a first plate body and a first sealing plate arranged on the inner side surface of the first plate body, the second plate includes a second plate body and a second sealing plate arranged on the inner side surface of the second plate body, the third plate includes a third plate body and a third sealing plate arranged on the inner side surface of the third plate body, wherein the fifth plate cooperates with the first sealing plate to form the first sealing portion, the sixth plate cooperates with the second sealing plate to form the second sealing portion, and the seventh plate cooperates with the third sealing plate to form the third sealing portion.

[0008] Preferably, each of the fifth plate, the sixth plate and the seventh plate is in an inverted L-shape or a T-shape.

[0009] Preferably, the fifth plate includes a first vertical plate and a first horizontal plate, the first horizontal plate is connected to the upper end of the first vertical plate, wherein the first vertical plate cooperates with the inner side surface of the first sealing plate, and the first horizontal plate cooperates with the upper surface of the first sealing plate; the sixth plate includes a second vertical plate and a second horizontal plate, the second horizontal plate is connected to the upper end of the second vertical plate, wherein the second vertical plate cooperates with the inner side surface of the second sealing plate, and the second horizontal plate cooperates with the upper surface of the second sealing plate; the seventh plate includes a third vertical plate and a third horizontal plate, the third horizontal plate is connected to the upper end of the third vertical plate, wherein the third vertical plate cooperates with the inner side surface of the third sealing plate, and the third horizontal plate cooperates with the upper surface of the third sealing plate.

[0010] Preferably, a first groove is provided on the lower surface of the eighth plate, a second groove is provided on the upper surface of the outlet plate, and the screen grid further comprises a seal, a first portion of the seal fits in the first groove, and a second portion of the seal fits in the second groove.

[0011] Preferably, a lower surface of the eighth plate is in contact with an upper surface of the outlet plate.

[0012] Preferably, the first plate further includes a first support plate arranged on the inner side surface of the first plate body, the first support plate is located below the first sealing plate, the second plate further includes a second support plate arranged on the inner side surface of the second plate body, the second support plate is located below the second sealing plate, the third plate further includes a third support plate arranged on the inner side surface of the third plate body, the third support plate is located below the third sealing plate, the screen frame further includes a metal plate, the metal plate has a first edge and a second edge opposite to each other in the first direction and a third edge and a fourth edge opposite to each other in the second direction, wherein the first edge is clamped between the first sealing plate and the first support plate, the second edge is clamped between the second sealing plate and the second support plate, and the third edge is clamped between the third sealing plate and the third support plate.

[0013] Preferably, a third groove is provided on the lower surface of the outlet plate, the fourth edge has a bent portion, and at least a portion of the bent portion fits in the third groove.

[0014] Preferably, the screen surface grid further includes a first reinforcing plate extending along the first direction and a second reinforcing plate extending along the second direction, the first end of the first reinforcing plate is connected to the fifth plate, the second end of the first reinforcing plate is connected to the sixth plate, the first end of the second reinforcing plate is connected to the seventh plate, and the second end of the second reinforcing plate is connected to the eighth plate, wherein the screen grid further includes a supporting plate extending along the first direction, the supporting plate is arranged on the screen frame, the first reinforcing plate is supported on the supporting plate, preferably, a first screen outlet is provided on the first plate, a second screen outlet is provided on the second plate, the first end of the support plate is fitted in the first screen outlet, and the second end of the support plate is fitted in the second screen outlet.

[0015] A second aspect of the present invention provides a plan sieve, wherein the plan sieve comprises the screen grid for the plan sieve according to the first aspect of the present invention.

[0016] The high plan sieve according to the embodiment of the present invention has the advantages of tight structure and the screen material will not escape. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a screen grid according to an embodiment of the present invention;

[0018] Figure 2 is a side view of a screen grid according to an embodiment of the present invention;

[0019] Figure 3 is a cross-sectional view of a screen grid according to an embodiment of the present invention;

[0020] Figure 4 is a cross-sectional view of a screen grid according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0022] The following describes the screen grid 1 according to an embodiment of the present invention with reference to the accompanying drawings. Figure 1-Figure 4 As shown, the screen grid 1 according to the embodiment of the present invention includes a screen frame 10, an outlet plate 20 and a screen surface grid 30 (screen core).

[0023] The screen frame 10 includes a first plate 110 and a second plate 120 opposite to each other in a first direction, and a third plate 130 and a fourth plate 140 opposite to each other in a second direction, wherein the first plate 110, the third plate 130, the second plate 120 and the fourth plate 140 are sequentially connected to form a substantially rectangular frame. The first end 210 of the outlet plate 20 is connected to the inner side of the first plate 110, and the second end 220 of the outlet plate 20 is connected to the inner side of the second plate 120. Thus, the first plate 110, the second plate 120, the outlet plate 20 and the third plate 130 can form a substantially rectangular frame for mounting the screen surface grid 30.

[0024] The screen surface grid 30 includes a fifth plate 310 and a sixth plate 320 opposite to each other in the first direction, and a seventh plate 330 and an eighth plate 340 opposite to each other in the second direction. The fifth plate 310, the seventh plate 330, the sixth plate 320 and the eighth plate 340 are sequentially connected to form a substantially rectangular frame. The fifth plate 310 cooperates with the first plate 110 to form a first sealing portion, the sixth plate 320 cooperates with the second plate 120 to form a second sealing portion, the seventh plate 330 cooperates with the third plate 130 to form a third sealing portion, and the eighth plate 340 cooperates with the outlet plate 20 to form a fourth sealing portion.

[0025] The first direction is perpendicular to the second direction. Figure 3 As shown by arrow A in Figure 4 As shown by arrow B in FIG. For example, the first direction may be a left-right direction, and the second direction may be a front-back direction.

[0026] The inner side of the first plate 110 (the second plate 120) refers to the side of the first plate 110 (the second plate 120) adjacent to the center (middle) of the screen frame 10. In addition, the inner side of the first plate 110 can also be understood as the side of the first plate 110 adjacent to the second plate 120, and the inner side of the second plate 120 can also be understood as the side of the second plate 120 adjacent to the first plate 110.

[0027] The present application is made based on the inventor's discovery and understanding of the following facts and problems: Due to the gaps between the screen surface grid and the screen frame and between the screen surface grid and the outlet plate of the existing screen grid, the existing screen grid has the defect of powder leakage.

[0028] The sieve grid 1 according to the embodiment of the present invention forms the first to fourth sealing portions between the sieve frame 10 and the sieve surface grid 30, thereby forming a sealing structure between the sieve surface grid 30 and the sieve frame 10, and a sealing structure between the sieve surface grid 30 and the outlet plate 20. In this way, the gap between the sieve surface grid 30 and the sieve frame 10 and the gap between the sieve surface grid 30 and the outlet plate 20 can be eliminated, thereby preventing the screened material (such as flour) in the sieve grid 1 from escaping from the sieve grid 1.

[0029] Therefore, the screen grid 1 according to the embodiment of the present invention has the advantages of tight structure and no spillage of the screened material.

[0030] The sieve grid 1 according to the embodiment of the present invention is a sieve grid without a support net. Therefore, compared with the ordinary sieve grid (sieve grid with a support net), the sieve grid 1 not only has a larger sieving area, but also the height of the sieve grid 1 can be reduced by about 10 mm, thereby increasing the number of layers of the sieve grid 1 of the high plan screen, so that the high plan screen has a larger sieving area and output.

[0031] like Figure 1-Figure 4 As shown, in some embodiments of the present invention, the screen grid 1 may include a screen frame 10, an outlet plate 20 and a screen surface grid 30. The screen frame 10 includes a first plate 110, a third plate 130, a second plate 120 and a fourth plate 140 connected end to end in sequence, and the screen surface grid 30 includes a fifth plate 310, a seventh plate 330, a sixth plate 320 and an eighth plate 340 connected end to end in sequence.

[0032] The surface of the screen grid 30 to which the screen silk is attached is sandblasted to a suitable roughness to increase the bonding force of the screen silk and to maintain the smoothness of the remaining surface of the screen grid 30 to prevent the screen grid 30 from being powdered. The screen grid 30 can be about 3 mm higher than the outlet plate 20, so that the screen grid 30 can be easily disassembled.

[0033] like Figure 3 As shown, the first plate 110 includes a first plate body 111 and a first sealing plate 112, and the first sealing plate 112 is arranged on the inner side of the first plate body 111. The second plate 120 includes a second plate body 121 and a second sealing plate 122, and the second sealing plate 122 is arranged on the inner side of the second plate body 121. The fifth plate 310 cooperates with the first sealing plate 112 to form the first sealing portion, and the sixth plate 320 cooperates with the second sealing plate 122 to form the second sealing portion.

[0034] The inner side of the first plate body 111 (the second plate body 121) refers to the side of the first plate body 111 (the second plate body 121) adjacent to the center (middle) of the screen frame 10. In addition, the inner side of the first plate body 111 can also be understood as the side of the first plate body 111 adjacent to the second plate body 121, and the inner side of the second plate body 121 can also be understood as the side of the second plate body 121 adjacent to the first plate body 111.

[0035] like Figure 4 As shown, the third plate 130 includes a third plate body 131 and a third sealing plate 132, and the third sealing plate 132 is disposed on the inner side of the third plate body 131. The seventh plate 330 cooperates with the third sealing plate 132 to form the third sealing portion.

[0036] The inner side of the third plate body 131 refers to the side of the third plate body 131 adjacent to the center (middle) of the screen frame 10. In addition, the inner side of the third plate body 131 can also be understood as the side of the third plate body 131 adjacent to the fourth plate 140.

[0037] Preferably, each of the fifth plate 310 , the sixth plate 320 , and the seventh plate 330 is in an inverted L-shape or a T-shape.

[0038] In one embodiment of the present invention, Figure 3 As shown, the fifth plate 310 includes a first vertical plate 311 and a first horizontal plate 312, and the first horizontal plate 312 is connected to the upper end of the first vertical plate 311. The first vertical plate 311 cooperates with the inner side surface of the first sealing plate 112, and the first horizontal plate 312 cooperates with the upper surface of the first sealing plate 112.

[0039] Preferably, the first vertical plate 311 contacts the inner side surface of the first sealing plate 112, and the first horizontal plate 312 contacts the upper surface of the first sealing plate 112. More preferably, an adhesive layer is provided between the first vertical plate 311 and the inner side surface of the first sealing plate 112, and an adhesive layer is provided between the first horizontal plate 312 and the upper surface of the first sealing plate 112.

[0040] The sixth plate 320 includes a second vertical plate 321 and a second horizontal plate 322, and the second horizontal plate 322 is connected to the upper end of the second vertical plate 321. The second vertical plate 321 cooperates with the inner side surface of the second sealing plate 122, and the second horizontal plate 322 cooperates with the upper surface of the second sealing plate 122. In this way, the structure of the sieve grid 1 can be more reasonable.

[0041] Preferably, the second vertical plate 321 contacts the inner side surface of the second sealing plate 122, and the second horizontal plate 322 contacts the upper surface of the second sealing plate 122. More preferably, an adhesive layer is provided between the second vertical plate 321 and the inner side surface of the second sealing plate 122, and an adhesive layer is provided between the second horizontal plate 322 and the upper surface of the second sealing plate 122.

[0042] The inner side surface of the first sealing plate 112 (the second sealing plate 122) refers to the side surface of the first sealing plate 112 (the second sealing plate 122) adjacent to the center (middle) of the screen frame 10. In addition, the inner side surface of the first sealing plate 112 can also be understood as the side surface of the first sealing plate 112 adjacent to the second sealing plate 122, and the inner side surface of the second sealing plate 122 can also be understood as the side surface of the second sealing plate 122 adjacent to the first sealing plate 112.

[0043] like Figure 4 As shown, the seventh plate 330 includes a third vertical plate 331 and a third horizontal plate 332, and the third horizontal plate 332 is connected to the upper end of the third vertical plate 331. The third vertical plate 331 cooperates with the inner side surface of the third sealing plate 132, and the third horizontal plate 332 cooperates with the upper surface of the third sealing plate 132. In this way, the structure of the sieve grid 1 can be made more reasonable.

[0044] Preferably, the third vertical plate 331 contacts the inner side surface of the third sealing plate 132, and the third horizontal plate 332 contacts the upper surface of the third sealing plate 132. More preferably, an adhesive layer is provided between the third vertical plate 331 and the inner side surface of the third sealing plate 132, and an adhesive layer is provided between the third horizontal plate 332 and the upper surface of the third sealing plate 132.

[0045] The inner side of the third sealing plate 132 refers to the side of the third sealing plate 132 adjacent to the center (middle) of the screen frame 10. In addition, the inner side of the third sealing plate 132 can also be understood as the side of the third sealing plate 132 adjacent to the fourth plate 140.

[0046] like Figure 3 As shown, the upper surface of the first plate 111 is flush with the upper surface of the first horizontal plate 312, the upper surface of the second plate 121 is flush with the upper surface of the second horizontal plate 322, and the upper surface of the third plate 131 is flush with the upper surface of the third horizontal plate 332. This makes the structure of the sieve grid 1 more reasonable. Figure 3 As shown by arrow C in FIG.

[0047] In some examples of the present invention, Figure 4 As shown, a first groove is provided on the lower surface of the eighth plate 340, and a second groove is provided on the upper surface of the outlet plate 20. The sieve grid 1 further includes a seal 40, a first portion of the seal 40 is fitted in the first groove, and a second portion of the seal 40 is fitted in the second groove. In other words, the seal 40, the first groove and the second groove can constitute the fourth sealing portion.

[0048] like Figure 4As shown, the lower surface of the eighth plate 340 contacts the upper surface of the outlet plate 20. In other words, a portion of the seal 40 is located in the first groove, and the remaining portion of the seal 40 is located in the second groove. This can make the structure of the sieve grid 1 more reasonable.

[0049] In one example of the present invention, Figure 3 and Figure 4 As shown, the first plate 110 further includes a first support plate 113 disposed on the inner side of the first plate body 111, the second plate 120 further includes a second support plate 123 disposed on the inner side of the second plate body 121, and the third plate 130 further includes a third support plate 133 disposed on the inner side of the third plate body 131. The first support plate 113 is located below the first sealing plate 112, the second support plate 123 is located below the second sealing plate 122, and the third support plate 133 is located below the third sealing plate 132.

[0050] The screen frame 10 further includes a metal plate 150, which has a first edge 151 and a second edge 152 opposite to each other in the first direction, and a third edge 153 and a fourth edge 154 opposite to each other in the second direction. The first edge 151 is clamped between the first sealing plate 112 and the first support plate 113, the second edge 152 is clamped between the second sealing plate 122 and the second support plate 123, and the third edge 153 is clamped between the third sealing plate 132 and the third support plate 133. This makes the structure of the screen grid 1 more reasonable.

[0051] The metal plate 150 may be made of food grade 304 stainless steel.

[0052] In a specific example of the present invention, a third groove is provided on the lower surface of the outlet plate 20, and the fourth edge 154 has a bent portion (not shown in the figure), at least a portion of which fits in the third groove, so that the metal plate 150 can be installed more stably.

[0053] like Figure 1 As shown, in one example of the present invention, the screen surface grid 30 further includes a first reinforcing plate 351 extending along the first direction and a second reinforcing plate 352 extending along the second direction, the first end of the first reinforcing plate 351 is connected to the fifth plate 310, the second end of the first reinforcing plate 351 is connected to the sixth plate 320, the first end of the second reinforcing plate 352 is connected to the seventh plate 330, and the second end of the second reinforcing plate 352 is connected to the eighth plate 340. In this way, the structural strength of the screen surface grid 30 can be further improved.

[0054] The sieve grid 1 further includes a support plate 50 extending along the first direction, the support plate 50 is arranged on the sieve frame 10, and the first reinforcing plate 351 is supported on the support plate 50. This can make the structure of the sieve grid 1 more stable. Preferably, the support plate 50 can be made of aluminum alloy, thereby preventing the support plate 50 from being worn due to long-term collision of the cleaning block. Preferably, the support plate 50 can be supported on the upper surface of the metal plate 150.

[0055] like Figure 1 and Figure 2 As shown, the first plate 110 is provided with a first undersize outlet 114, the second plate 120 is provided with a second undersize outlet 124, the first end 510 of the support plate 50 is fitted in the first undersize outlet 114, and the second end 520 of the support plate 50 is fitted in the second undersize outlet 124. In this way, the support plate 50 can be installed more conveniently and more stably, so that the structure of the screen grid 1 can be made more stable.

[0056] The present invention further provides a high plan screen. The high plan screen according to an embodiment of the present invention comprises a screen grid 1 according to the above embodiment of the present invention. The high plan screen according to the embodiment of the present invention has the advantages of a tight structure and no spillage of the screened material.

[0057] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In the present invention, 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 one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0062] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A screen grid (1) for a high plan sieve, characterized in that: include: A screen frame (10), the screen frame (10) comprising a first plate (110) and a second plate (120) opposite to each other in a first direction, and a third plate (130) and a fourth plate (140) opposite to each other in a second direction, the first plate (110), the third plate (130), the second plate (120) and the fourth plate (140) being connected in sequence, wherein the first direction is perpendicular to the second direction; an outlet plate (20), wherein a first end portion (210) of the outlet plate (20) is connected to an inner side surface of the first plate (110), and a second end portion (220) of the outlet plate (20) is connected to an inner side surface of the second plate (120); and a screen surface grid (30), the screen surface grid (30) comprising a fifth plate (310) and a sixth plate (320) opposite to each other in the first direction, and a seventh plate (330) and an eighth plate (340) opposite to each other in the second direction, the fifth plate (310), the seventh plate (330), the sixth plate (320) and the eighth plate (340) being connected in sequence, wherein the fifth plate (310) cooperates with the first plate (110) to form a first sealing portion, the sixth plate (320) cooperates with the second plate (120) to form a second sealing portion, the seventh plate (330) cooperates with the third plate (130) to form a third sealing portion, and the eighth plate (340) cooperates with the outlet plate (20) to form a fourth sealing portion; The first plate (110) comprises a first plate body (111) and a first sealing plate (112) provided on an inner side surface of the first plate body (111); the second plate (120) comprises a second plate body (121) and a second sealing plate (122) provided on an inner side surface of the second plate body (121); the third plate (130) comprises a third plate body (131) and a third sealing plate (132) provided on an inner side surface of the third plate body (131); wherein the fifth plate (310) cooperates with the first sealing plate (112) to form the first sealing portion; the sixth plate (320) cooperates with the second sealing plate (122) to form the second sealing portion; and the seventh plate (330) cooperates with the third sealing plate (132) to form the third sealing portion; Each of the fifth plate (310), the sixth plate (320) and the seventh plate (330) is in an inverted L-shape or a T-shape; A first groove is provided on the lower surface of the eighth plate (340), a second groove is provided on the upper surface of the outlet plate (20), and the screen grid (1) further comprises a sealing member (40), a first portion of the sealing member (40) being fitted in the first groove, and a second portion of the sealing member (40) being fitted in the second groove.

2. The screen grid (1) for a high plan screen according to claim 1, characterized in that: The fifth plate (310) comprises a first vertical plate (311) and a first horizontal plate (312), wherein the first horizontal plate (312) is connected to an upper end portion of the first vertical plate (311), wherein the first vertical plate (311) cooperates with an inner side surface of the first sealing plate (112), and the first horizontal plate (312) cooperates with an upper surface of the first sealing plate (112); The sixth plate (320) comprises a second vertical plate (321) and a second horizontal plate (322), the second horizontal plate (322) being connected to the upper end of the second vertical plate (321), wherein the second vertical plate (321) cooperates with the inner side surface of the second sealing plate (122), and the second horizontal plate (322) cooperates with the upper surface of the second sealing plate (122); The seventh plate (330) includes a third vertical plate (331) and a third horizontal plate (332), wherein the third horizontal plate (332) is connected to the upper end of the third vertical plate (331), wherein the third vertical plate (331) cooperates with the inner side surface of the third sealing plate (132), and the third horizontal plate (332) cooperates with the upper surface of the third sealing plate (132).

3. The screen grid (1) for a high plan screen according to claim 1, characterized in that: The lower surface of the eighth plate (340) contacts the upper surface of the outlet plate (20).

4. The screen grid (1) for a high plan screen according to claim 1, characterized in that: The first plate (110) further comprises a first support plate (113) provided on the inner side surface of the first plate body (111), the first support plate (113) being located below the first sealing plate (112); the second plate (120) further comprises a second support plate (123) provided on the inner side surface of the second plate body (121), the second support plate (123) being located below the second sealing plate (122); the third plate (130) further comprises a third support plate (133) provided on the inner side surface of the third plate body (131), the third support plate (133) being located below the third sealing plate (132); the screen The frame (10) further comprises a metal plate (150), the metal plate (150) having a first edge (151) and a second edge (152) opposite to each other in the first direction and a third edge (153) and a fourth edge (154) opposite to each other in the second direction, wherein the first edge (151) is clamped between the first sealing plate (112) and the first supporting plate (113), the second edge (152) is clamped between the second sealing plate (122) and the second supporting plate (123), and the third edge (153) is clamped between the third sealing plate (132) and the third supporting plate (133).

5. The screen grid (1) for a high plan screen according to claim 4, characterized in that: A third groove is provided on the lower surface of the outlet plate (20), and the fourth edge (154) has a bent portion, at least a portion of which fits in the third groove.

6. The screen grid (1) for a high plan screen according to claim 1, characterized in that: The screen surface grid (30) further comprises a first reinforcing plate (351) extending along the first direction and a second reinforcing plate (352) extending along the second direction, wherein a first end of the first reinforcing plate (351) is connected to the fifth plate (310), a second end of the first reinforcing plate (351) is connected to the sixth plate (320), a first end of the second reinforcing plate (352) is connected to the seventh plate (330), and a second end of the second reinforcing plate (352) is connected to the eighth plate (340), wherein the screen grid (1) further comprises a supporting plate (50) extending along the first direction, the supporting plate (50) being arranged on the screen frame (10), and the first reinforcing plate (351) is supported on the supporting plate (50).

7. The screen grid (1) for a high plan screen according to claim 6, characterized in that: The first plate (110) is provided with a first undersize outlet (114), the second plate (120) is provided with a second undersize outlet (124), the first end (510) of the support plate (50) is fitted in the first undersize outlet (114), and the second end (520) of the support plate (50) is fitted in the second undersize outlet (124).

8. A high plan sieve, characterized in that: It comprises a screen grid (1) for a plan screen according to any one of claims 1 to 7.

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