Sieve plate assembly and linear screening equipment

Abstract

The utility model discloses a sieve plate assembly and linear screening equipment, and relates to the technical field of screening devices.The sieve plate assembly comprises a sieve plate, two side plates and a cross beam; a plurality of screening holes are formed in the surface of the screening plate, the screening plate comprises a screening area and a supporting area, and the multiple screening holes are all located in the screening area; the two side plates are respectively arranged on two opposite sides of the sieve plate; the beam is installed below the sieve plate and used for supporting the sieve plate, the two ends of the beam are connected with the two side plates respectively, the beam is located in the supporting area, and the width of the supporting area is larger than that of the beam. According to the sieve plate assembly, the problems that when an existing linear sieve is used for screening, a cross beam is seriously abraded, and even the cross beam is abraded through or fractured are solved, the safety and stability of a screening system are improved, and the supporting strength of the cross beam to the sieve plate is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, in particular to a screen plate assembly and linear screening equipment. Background Art

[0002] In industrial production, screening is a key step in raw material processing, effectively separating materials based on the size of the screen mesh aperture. As a crucial piece of equipment in the screening industry, linear screens are widely used for screening a variety of materials, including ore, steel slag, and quartz sand. This device utilizes a vibrating motor as a vibration source. The material is thrown up onto the screen and simultaneously moves forward in a linear motion, passing through the mesh and being discharged through the outlet. It offers advantages such as high efficiency, high yield, and a simple structure.

[0003] Despite their importance in industrial production, linear screens still suffer from several drawbacks in their design and use. Due to the long size of the screen plates, a crossbeam is typically installed underneath to support them and improve their structural stability. This design results in mortar directly impacting the crossbeam during the screening process, causing severe wear and tear, even wear through and breakage. This not only impacts the safe and stable operation of the entire screening system but can also cause deformation or damage to the screen, further reducing screening efficiency and accuracy. Utility Model Content

[0004] The main purpose of the utility model is to provide a screen plate assembly and a linear screening device, aiming to solve the problem that the beams of the existing linear screens are severely worn, or even worn through or broken, during screening.

[0005] To achieve the above-mentioned purpose, the utility model provides a screen plate assembly for screening sand and gravel, comprising:

[0006] A sieve plate, wherein a plurality of sieve holes are formed on the surface of the sieve plate, the sieve plate comprises at least two sieve sections and at least one support section, the plurality of sieve holes are all located in the sieve sections, and the sand and gravel are vibrated and screened on the sieve plate in a forward direction that is a first direction;

[0007] two side plates, the two side plates being respectively arranged on opposite sides of the sieve plate; and

[0008] A crossbeam is installed below the sieve plate and is used to support the sieve plate. Two ends of the crossbeam are respectively connected to the two side plates. The crossbeam is located in the supporting area.

[0009] In an embodiment of the present invention, the support area is rectangular in shape, the extension direction of the crossbeam is perpendicular to the first direction, and the width of the support area is greater than the width of the crossbeam.

[0010] In one embodiment of the present invention, the screen plate includes multiple screening areas and multiple support areas, and multiple crossbeams are provided. The screening areas and the support areas are alternately arranged in sequence along the first direction, and each crossbeam is arranged correspondingly to a support area above and below.

[0011] In one embodiment of the present invention, the screen plate includes a plurality of splicing plates, each of which is provided with a screening area, and the plurality of splicing plates are spliced ​​along a first direction to form the screen plate, and the joint of two adjacent splicing plates forms the support area, and each crossbeam is detachably connected to two adjacent splicing plates.

[0012] In one embodiment of the present invention, the screen plate assembly also includes a plurality of screening strips, which are arranged on the side of the screen plate away from the crossbeam and located at the joint of the two adjacent splicing plates. The crossbeam is threadedly connected to the screening strips to fix the two splicing plates.

[0013] In one embodiment of the present invention, splicing parts are formed on both sides of the splicing plate along the first direction, and the shape of the splicing part is L-shaped. The splicing parts of two adjacent splicing plates abut and enclose to form an installation groove, and the screening strip is arranged in the installation groove.

[0014] In one embodiment of the present invention, the crossbeam includes a connected mounting tube and a connecting member, the two ends of the mounting tube are respectively connected to the two side plates, the connecting member is located between the mounting tube and the sieve plate, and the connecting member is detachably connected to the support area of ​​the sieve plate.

[0015] In one embodiment of the present invention, the plurality of sieve holes are arranged in a matrix in the sieve section, and the diameter of the sieve holes close to the crossbeam is smaller than the diameter of the sieve holes far from the crossbeam.

[0016] In one embodiment of the present invention, the screen plate assembly includes two screen plates, which are arranged in parallel and spaced apart between the two side plates. The screen holes on the surfaces of the two screen plates have different diameters and are used to screen sand and gravel of different sizes.

[0017] The present invention also proposes a linear screening device, which includes a driving mechanism and a sieve plate assembly as described above, wherein the driving mechanism is connected to the sieve plate assembly to drive the sieve plate assembly to vibrate.

[0018] The utility model proposes a screen plate assembly for screening sand and gravel, which includes a screen plate, two side plates and a crossbeam. The screen plate includes a screening area and a support area, and a plurality of sieve holes are provided in the screening area; the two side plates are respectively arranged on the opposite sides of the screen plate, and enclose the screen plate to form a screening space, and the sand and gravel are vibrated and screened in the screening space. A crossbeam is installed under the screen plate, and the two ends of the crossbeam are respectively connected to the two side plates and used to support the screen plate. The crossbeam is located in the support area, and the width of the support area is greater than the width of the crossbeam. Since there are no sieve holes in the support area, the impact of the sand and gravel flowing out of the sieve holes on the crossbeam can be reduced when screening sand and gravel, thereby solving the problem that the crossbeam of the existing linear screen is severely worn or even worn through or broken during screening, improving the safety and stability of the screening system, and ensuring the support strength of the crossbeam on the screen plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 A structural schematic diagram of an embodiment of a screen plate assembly provided by the present utility model;

[0021] Figure 2 for Figure 1 A top view of the screen plate assembly;

[0022] Figure 3 for Figure 2 Cross-sectional view along AA;

[0023] Figure 4 for Figure 3 A partial enlarged schematic diagram at point B;

[0024] Figure 5 This is a schematic structural diagram of the splicing plate in the screen plate assembly provided by the present invention.

[0025] Description of Figure Numbers:

[0026] 1. Screen plate assembly; 10. Screen plate; 11. Screening area; 111. Screen hole; 12. Support area; 13. Splicing plate; 131. Splicing part; 20. Side plate; 30. Crossbeam; 31. Connector; 32. Mounting cylinder; 40. Screening strip.

[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] The utility model provides a screen plate assembly 1 for screening sand and gravel.

[0032] Combine Figures 1 to 4 As shown, in one embodiment of the present invention, the screen plate assembly 1 includes a screen plate 10, two side plates 20 and a crossbeam 30; a plurality of sieve holes 111 are opened on the surface of the screen plate 10, the screen plate 10 includes at least two screening areas 11 and at least one support area 12, the plurality of sieve holes 111 are all located in the screening area 11, and the forward direction of the sand and gravel when being vibrated and screened on the screen plate 10 is a first direction; the two side plates 20 are respectively arranged on the opposite sides of the screen plate 10; the crossbeam 30 is installed under the screen plate 10 and is used to support the screen plate 10, the two ends of the crossbeam 30 are respectively connected to the two side plates 20, and the crossbeam 30 is located in the support area 12.

[0033] In this embodiment, the sieve plate 10 is made of high-strength stainless steel to improve its wear resistance and corrosion resistance. The sieve plate 10 can be formed by processing a single piece of sheet material, or it can be formed by splicing a plurality of splicing plates 13. The size of the sieve plate 10 can be designed according to the amount of sand and gravel that needs to be screened in actual application. The size of the sieve holes 111 provided on the surface of the sieve plate 10 can be varied to facilitate screening of materials of different sizes in the sand and gravel through different sieve holes 111. Finally, the larger-sized sand and gravel materials that have not been screened are vibrated forward by the vibration of the sieve plate 10 and discharged from the discharge port.

[0034] The sieve plate 10 is divided into at least two screening sections 11 and at least one support section 12. Each screening section 11 is evenly distributed with sieve holes 111. The total area of ​​the screening sections 11 accounts for more than 80% of the total area of ​​the sieve plate 10 to ensure screening efficiency and ensure that materials can be quickly screened out of the sieve holes 111. The shape of the support section 12 is compatible with the shape of the crossbeam 30. The crossbeam 30 is installed in the support section 12 of the sieve plate 10 to provide sufficient support strength and reduce wear on the crossbeam 30.

[0035] The side panels 20 are made of 5mm thick steel plates and are arranged on both sides of the screen plate 10. The side panels 20 on both sides are fixed to the screen plate 10 by welding or clamping. At the same time, the cross beams 30 are also welded or clamped to the side panels 20 to ensure the structural stability of the screen plate assembly 1. The side panels 20 and the screen plate 10 enclose a screening space, and the sand and gravel materials are vibrated and screened in the screening space while moving along the first direction. The first direction in this application is Figure 1 The middle edge is parallel to the direction of the screen plate 10 and the side plate 20. A baffle is provided at one end of the screen plate 10, and an opening is provided at the other end. Therefore, when screening sand and gravel materials, the materials are put onto the screen plate 10 from the side with the baffle. Driven by the driving mechanism, the screen plate 10 vibrates, and the smaller materials flow out from the screen holes 111, while the larger materials move forward in the first direction and are discharged from the discharge port, thereby finally achieving material screening.

[0036] The two ends of the crossbeam 30 are connected to the side plates 20 through cover plates, and the connection methods can be threaded connection, welding, plug-in connection, etc. Of course, the crossbeam 30 can also be directly connected to the side plates 20. At the same time, the crossbeam 30 is installed below the screen plate 10 to support the screen plate 10, thereby improving the structural strength and service life of the screen plate 10. The crossbeam 30 is located in the support area 12, and the width of the support area 12 is greater than the width of the crossbeam 30. Since the support area 12 does not have a sieve hole 111, the impact of the sand and gravel flowing out of the sieve hole 111 on the crossbeam 30 can be reduced during sand and gravel screening, thereby solving the problem of severe wear of the crossbeam 30 or even wear-through or breakage of the crossbeam 30 during screening of the existing linear screen, improving the safety and stability of the screening system, and ensuring the support strength of the crossbeam 30 on the screen plate 10.

[0037] Combine Figures 2 to 4 As shown, in one embodiment of the present invention, the support area 12 is rectangular in shape, the extension direction of the beam 30 is perpendicular to the first direction, and the width of the support area 12 is greater than the width of the beam 30 .

[0038] In this embodiment, the support area 12 is designed to be rectangular, with its length parallel to the extension direction of the crossbeam 30. It is understandable that the support area 12 without the sieve holes 111 is also perpendicular to the first direction. Therefore, during the vibration process, the material at different positions passes through the same number of sieve holes 111, thereby ensuring uniform and effective screening of the material on the screen plate 10. At the same time, the support area 12 and the crossbeam 30 extend in the same direction and are wider than the crossbeam 30. This design enables the crossbeam 30 to more effectively support the screen plate 10, and the material on the screen plate 10 can effectively avoid the crossbeam 30 during the screening process, reducing impact and wear on the crossbeam 30.

[0039] For example, the width of the screening area 11 can be designed to be 420 mm, the width of the support area 12 can be designed to be 70 mm, and the width of the crossbeam 30 can be designed to be 45 mm. The cross-sectional shape of the crossbeam 30 can be designed to various shapes as needed, such as rectangular, circular, or I-shaped, to accommodate different stress conditions. Furthermore, the surface of the crossbeam 30 can be treated with special treatments, such as plating, spraying, or anodizing, to improve its corrosion and wear resistance.

[0040] Combine Figures 1 to 3 As shown, in one embodiment of the present invention, the screen plate 10 includes multiple screening areas 11 and multiple support areas 12, and multiple crossbeams 30 are provided. The screening areas 11 and the support areas 12 are alternately arranged in sequence along the first direction, and each crossbeam 30 is arranged correspondingly to a support area 12 above and below.

[0041] During actual material screening, it is usually necessary to design the screen plate 10 to be longer in order to increase the travel of the material when it vibrates and moves along the first direction, thereby improving the screening accuracy of the material. At the same time, a longer screen plate 10 can carry more material, so that the screen plate 10 can screen more material at one time, thereby improving the screening efficiency. Therefore, in this embodiment, the screen plate 10 is designed to include multiple screening areas 11 and multiple support areas 12, and a crossbeam 30 is correspondingly provided below each support area 12, thereby improving the overall support strength of the screen plate 10. The multiple screening areas 11 set at the same time further improve the screening accuracy of sand and gravel materials, and the multiple screening areas 11 and the multiple support areas 12 are alternately arranged along the first direction so that the materials added from different positions of the feeding port pass through the same number of sieve holes 111 when vibrating and screening along the first direction, thereby improving the uniformity of screening.

[0042] Further, combined Figure 5 As shown, the arrangement of the multiple sieve holes 111 in each screening area 11 is improved, and the multiple sieve holes 111 in each screening area 11 are divided into three screening groups. The three screening groups are arranged at intervals in a direction perpendicular to the first direction, and a plurality of reinforcing ribs are provided on the side of the sieve plate 10 facing the crossbeam 30. The positions of the reinforcing ribs correspond to the gaps between the two screening groups in the upper and lower directions, thereby improving the structural strength of the sieve plate 10.

[0043] Furthermore, each screening group can be divided into multiple screening blocks, each screening block is provided with multiple rows and columns of sieve holes 111 arranged in a matrix, each screening block is spaced apart, and multiple screening blocks are also arranged in a matrix, and reinforcing ribs are also provided under each two adjacent screening blocks, thereby further improving the structural strength of the screen plate 10.

[0044] Furthermore, in combination with the above-mentioned scheme of designing the sieve holes 111 into multiple screening zones 11, multiple screening groups, and multiple screening blocks, the sizes and shapes of the sieve holes 111 of different screening zones 11 or screening groups or screening blocks are designed to be different, so as to classify materials of different sizes or shapes respectively, thereby improving the types of materials that can be screened by the screen plate assembly 1 and the screening efficiency.

[0045] Combine Figure 2 and Figure 5 As shown, in one embodiment of the present invention, the screen plate 10 includes a plurality of splicing plates 13, each splicing plate 13 is provided with a screening area 11, and the plurality of splicing plates 13 are spliced ​​along a first direction to form the screen plate 10, and the joints of two adjacent splicing plates 13 form a support area 12, and each crossbeam 30 is detachably connected to two adjacent splicing plates 13.

[0046] In this embodiment, the sieve plate 10 is composed of a plurality of splicing plates 13, each of which is provided with a screening area 11. The screening area 11 is located in the middle of the splicing plate 13, and the two sides of the splicing plate 13 form a support area 12. By designing the sieve plate 10 to be a structure spliced ​​by a plurality of splicing plates 13, the molding and processing of the sieve plate 10 are facilitated, and the difficulty of assembly and disassembly is reduced. The plurality of splicing plates 13 can be detachably connected by plugging, and then detachably connected to the crossbeam 30, or they can be detachably connected to the crossbeam 30 respectively by abutting. This design not only facilitates the installation and maintenance of the sieve plate assembly 1, but also improves the flexibility and adaptability of the sieve plate assembly 1. Different numbers of splicing plates 13 can be spliced ​​according to actual needs, thereby achieving different screening requirements.

[0047] Combine Figure 4 and Figure 5As shown, in one embodiment of the present invention, the screen plate assembly 1 also includes a plurality of screening strips 40, which are arranged on the side of the screen plate 10 away from the crossbeam 30 and are located at the joint of two adjacent splicing plates 13. The crossbeam 30 is threadedly connected to the screening strips 40 to fix the two splicing plates 13.

[0048] In this embodiment, two adjacent splicing plates 13 are arranged in abutment with each other. On the side of the screen plate 10 away from the crossbeam 30, each screening bead 40 is disposed between the two adjacent splicing plates 13 and is connected to the crossbeam 30 via a threaded connection. The surface of the screening bead 40 is provided with threaded holes that mate with the bolts on the crossbeam 30. The bead is tightened or loosened by rotating the bolts, thereby securing the splicing plates 13 between the screening bead 40 and the crossbeam 30. This solution simultaneously achieves the goals of splicing and securing the splicing plates 13 to form the screen plate 10 and of securing the screen plate 10 to the crossbeam 30, thereby improving assembly efficiency.

[0049] In order to improve the stability of the screen plate assembly 1, the screening pressure strip 40 is not only pressed onto the two splicing plates 13, but also applies a certain pre-tightening force to the splicing plates 13 through its elastic action to prevent the screen plate 10 from excessive displacement or deformation during the vibration screening process.

[0050] Combine Figure 4 and Figure 5 As shown, in one embodiment of the present invention, splicing parts 131 are formed on both sides of the splicing plate 13 along the first direction, and the splicing part 131 is L-shaped. The splicing parts 131 of two adjacent splicing plates 13 abut and enclose to form an installation groove, and the screening strip 40 is arranged in the installation groove.

[0051] In this embodiment, L-shaped splicing portions 131 are formed on both sides of the splicing plate 13 along the first direction. The splicing portions 131 of two adjacent splicing plates 13 abut against each other to form a mounting groove, thereby providing a stable mounting position for the screening bead 40. The size and shape of the mounting groove are compatible with the screening bead 40. When the screening bead 40 is embedded in the mounting groove, the screening bead 40 is flush with the surface of the screen plate 10, thereby preventing the screening bead 40 from affecting the screening of the sand and gravel material.

[0052] The screening bead 40 is placed in the mounting groove and is connected to the crossbeam 30, the bottom of the mounting groove, and the splicing plate 13 by screws. Specifically, the crossbeam 30, the splicing plate 13, and the screening bead 40 are all provided with corresponding openings. The screws pass through these openings in sequence and are threadedly connected with nuts to achieve the fixing of the screening bead 40 to the splicing plate 13.

[0053] Combine Figure 3 and Figure 4As shown, in one embodiment of the present invention, the crossbeam 30 includes a connected mounting tube 32 and a connecting member 31, the two ends of the mounting tube 32 are respectively connected to the two side plates 20, the connecting member 31 is located between the mounting tube 32 and the sieve plate 10, and the connecting member 31 is detachably connected to the support area 12 of the sieve plate 10.

[0054] In this embodiment, the mounting cylinder 32 is used to connect the side plates 20 on both sides of the sieve plate 10, and the connector 31 plays the role of supporting the sieve plate 10 and connecting the sieve plate 10. The cylindrical structure of the mounting cylinder 32 can reduce the structural weight and facilitate the vibration of the sieve plate assembly 1. The connector 31 and the mounting cylinder 32 can adopt an integrally formed structure or a welded connection. By adopting the method of connecting the connector 31 to the sieve plate 10, the convenience of connecting the crossbeam 30 to the sieve plate 10 is improved, and when the crossbeam 30 and the sieve plate 10 are connected by threads, the threaded hole is opened on the connector 31, rather than on the mounting cylinder 32, to avoid the opening affecting the structural strength of the mounting cylinder 32. The shape of the connector 31 is tubular, and the internal cavity provides a avoidance when connected to the sieve plate 10. At the same time, the contact surface with the sieve plate 10 is flat, which improves the support strength of the crossbeam 30 on the sieve plate 10.

[0055] Furthermore, in order to improve the load-bearing capacity and durability of the crossbeam 30 , the material of the crossbeam 30 is selected with consideration given to high strength and light weight, such as high-strength aluminum alloy or carbon fiber reinforced plastic (CFRP).

[0056] Combine Figure 5 As shown, in one embodiment of the present invention, a plurality of sieve holes 111 are arranged in a matrix in the sieve section 11 , and the diameter of the sieve holes 111 close to the crossbeam 30 is smaller than the diameter of the sieve holes 111 away from the crossbeam 30 .

[0057] In this embodiment, the sieve holes 111 are arranged in a matrix in the screening area 11. This arrangement helps to improve screening efficiency and uniformity.

[0058] The mesh holes 111 near the crossbeam 30 are designed with a smaller diameter, for example, 3 mm, while the diameter of the mesh holes 111 farther from the crossbeam 30 gradually increases, for example, to 6 mm. This design takes into account the fluidity of the material and the wear of the crossbeam 30 during the screening process. The smaller diameter mesh holes 111 can better prevent wear of the crossbeam 30, while the larger diameter mesh holes 111 help improve screening efficiency.

[0059] The arrangement and size of the sieve holes 111 can be adjusted according to the particle size and properties of the material being screened to achieve the best screening effect. For example, for finer materials, the number of sieve holes 111 can be increased and the size of the sieve holes 111 can be reduced; for coarser materials, the number of sieve holes 111 can be reduced and the size of the sieve holes 111 can be increased.

[0060] In one embodiment of the present invention, the screen plate assembly 1 includes two screen plates 10, which are arranged in parallel and spaced apart between the two side plates 20. The screen holes 111 opened on the surfaces of the two screen plates 10 have different diameters and are used to screen sand and gravel of different sizes.

[0061] In this embodiment, the sieve holes 111 on the surface of the upper sieve plate 10 are designed to be larger, for screening larger materials; the sieve holes 111 on the surface of the lower sieve plate 10 are designed to be smaller, for screening smaller materials. Therefore, during material screening, larger materials vibrate on the upper sieve plate 10 and are discharged from the upper discharging port. Medium-sized materials flow from the upper sieve plate 10 to the lower sieve plate 10, where they are further screened. Finally, smaller materials flow out of the sieve holes 111 on the lower sieve plate 10, achieving more efficient screening.

[0062] The interval between the two sieve plates 1010 can be adjusted according to the particle size and screening requirements of the material to ensure that the material can flow smoothly between the two layers of sieve plates 10 while avoiding remixing of the screened material.

[0063] The present utility model also proposes a linear screening device, which includes a driving mechanism and a screen plate assembly 1. The specific structure of the screen plate assembly 1 refers to the above embodiment. Since the present linear screening device adopts all the technical solutions of all the embodiments of the above-mentioned screen plate assembly 1, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0064] The drive mechanism is connected to the screen plate assembly 1 to drive the screen plate assembly 1 to vibrate. The drive mechanism includes at least one vibration motor, which is fixed to the frame of the linear screening equipment and generates vibration force through its eccentric block. The eccentric block is connected to the side plate 20, thereby driving the screen plate assembly 11 to vibrate. The drive mechanism also includes a motor controller for adjusting the operating frequency and amplitude of the vibration motor to meet the screening requirements of different materials.

[0065] In this embodiment, the sieve plate assembly 1 is connected to the driving mechanism through several elastic supports, which can be rubber pads, springs or elastic metal elements, to absorb and isolate vibrations, reduce the impact on other parts of the equipment, and protect the sieve plate assembly 1 from damage caused by excessive vibration.

[0066] In addition, the linear screening equipment also includes a material conveying system, which can be one or more belt conveyors, for evenly conveying the material to be screened onto the screen plate assembly 1. The cooperation between the material conveying system and the screen plate assembly 1 ensures that the material is evenly distributed on the screen plate 10, thereby improving the screening efficiency.

[0067] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A screen plate assembly for screening sand and gravel, characterized in that: The sieve plate assembly comprises: A sieve plate, wherein a plurality of sieve holes are formed on the surface of the sieve plate, the sieve plate comprises at least two sieve sections and at least one support section, the plurality of sieve holes are all located in the sieve sections, and the sand and gravel are vibrated and screened on the sieve plate in a forward direction that is a first direction; two side plates, the two side plates being respectively arranged on opposite sides of the sieve plate; and A crossbeam is installed below the sieve plate and is used to support the sieve plate. Two ends of the crossbeam are respectively connected to the two side plates. The crossbeam is located in the supporting area.

2. The screen plate assembly according to claim 1, wherein The support area is rectangular in shape, the extension direction of the crossbeam is perpendicular to the first direction, and the width of the support area is greater than the width of the crossbeam.

3. The screen plate assembly according to claim 2, wherein: The screen plate includes a plurality of the screening areas and a plurality of the supporting areas. A plurality of crossbeams are provided. The screening areas and the supporting areas are alternately arranged in sequence along the first direction. Each crossbeam is arranged correspondingly to a supporting area above and below.

4. The screen plate assembly according to claim 3, wherein: The sieve plate includes multiple splicing plates, each of which is provided with a screening area. Multiple splicing plates are spliced ​​along a first direction to form the sieve plate, and the joint of two adjacent splicing plates forms the supporting area. Each crossbeam is detachably connected to two adjacent splicing plates.

5. The screen plate assembly according to claim 4, wherein: The sieve plate assembly also includes a plurality of screening strips, which are arranged on the side of the sieve plate away from the crossbeam and located at the joint of two adjacent splicing plates. The crossbeam is threadedly connected to the screening strips to fix the two splicing plates.

6. The screen plate assembly according to claim 5, wherein: The splicing plates are provided with splicing portions on both sides along the first direction. The splicing portions are L-shaped. The splicing portions of two adjacent splicing plates abut and enclose to form an installation groove. The screening strip is provided in the installation groove.

7. The screen plate assembly according to any one of claims 1 to 6, wherein: The crossbeam includes a connected mounting tube and a connecting piece, the two ends of the mounting tube are respectively connected to the two side plates, the connecting piece is located between the mounting tube and the sieve plate, and the connecting piece is detachably connected to the supporting area of ​​the sieve plate.

8. The screen plate assembly according to any one of claims 1 to 6, wherein: The plurality of sieve holes are arranged in a matrix in the sieve section, and the diameter of the sieve holes close to the crossbeam is smaller than the diameter of the sieve holes far from the crossbeam.

9. The screen plate assembly according to any one of claims 1 to 6, wherein: The sieve plate assembly includes two sieve plates, which are arranged in parallel and spaced apart between the two side plates. The sieve holes on the surfaces of the two sieve plates have different diameters and are used to screen sand and gravel of different sizes.

10. A linear screening device, characterized in that: The linear screening device comprises a driving mechanism and a screen plate assembly according to any one of claims 1 to 9, wherein the driving mechanism is drivingly connected to the screen plate assembly to drive the screen plate assembly to vibrate.

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