Linear screen for mineral separation

Abstract

The utility model discloses a linear screen for mineral separation. The linear screen comprises a screen box, a box cover, a feeding pipe, a split type feeding limiting mechanism and a pair of hydraulic buffering mechanisms. The split type feeding limiting mechanism comprises a feeding limiting frame, a guide plate is fixedly assembled in the feeding limiting frame, a limiting pin shaft is fixedly connected to one side of the feeding limiting frame, and connecting rods are hinged to the two ends of the limiting pin shaft. The hydraulic buffering mechanism comprises a hydraulic buffering rod, a hydraulic cylinder is slidably assembled on the side, close to the box cover, of the hydraulic buffering rod, the end, located in the hydraulic cylinder, of the hydraulic buffering rod is fixedly connected with a piston block, and a connecting spring is arranged between the piston block and the hydraulic cylinder. According to the linear screen for mineral separation, due to the fact that the split type feeding limiting mechanism and the hydraulic buffering mechanism are arranged, materials added from top to bottom can be buffered, limited and guided, the risk that the screen mesh is deformed and damaged due to the impact of the materials is reduced, the service life of the screen mesh is prolonged, and the service life of the screen mesh is prolonged. And the use and maintenance cost of the linear screen for mineral separation is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of linear screens for mineral processing, and specifically relates to a linear screen for mineral processing. Background Technology

[0002] Linear screens for mineral processing, also known as linear vibrating screens, are a common type of screening equipment. They work by using a vibrating motor to excite the material, causing it to be thrown up on the screen and move forward in a straight line, thus achieving the purpose of screening the material on the screen. Currently, common linear screens for mineral processing mainly consist of: screen box, screen frame, screen, vibrating motor, shock-absorbing springs, and support frame.

[0003] In existing technologies, most linear screens used in mineral processing require the material to be screened to be transported into the screen box through the upper feed inlet during use, so that the material can be screened through the screen mesh. However, most linear screens used in mineral processing do not have the function of feed buffer protection, and cannot buffer the material added to the screen box from top to bottom. This makes the screen mesh inside the linear screen of mineral processing easily deformed and damaged by the impact of the material falling from the feed inlet during use, which reduces the service life of the screen mesh inside the linear screen of mineral processing and makes the use and maintenance cost of linear screens of mineral processing high.

[0004] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a linear screen for mineral processing.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this utility model is to provide a linear screen for mineral processing, which can provide feed buffer protection for the linear screen.

[0007] To achieve the above objectives, a specific embodiment of this utility model provides a linear screen for mineral processing, comprising: a screen box, a box cover, a feed pipe, a split-type feed limiting mechanism, and a pair of hydraulic buffer mechanisms.

[0008] A cover is fixedly connected to the top of the screen box, and a feed pipe is fixedly installed on the top of the cover.

[0009] The split-type feeding limiting mechanism is assembled inside the screen box. The split-type feeding limiting mechanism includes a feeding limiting frame, which is arranged directly below the feeding pipe. A guide plate is fixedly assembled inside the feeding limiting frame. A limiting pin is fixedly connected to one side of the feeding limiting frame, and connecting rods are hinged to both ends of the limiting pin.

[0010] A pair of hydraulic buffer mechanisms are fixedly assembled between the feed limit frame and the box cover. The hydraulic buffer mechanism includes a hydraulic buffer rod, which is hinged to the feed limit frame. A hydraulic cylinder is slidably assembled on the side of the hydraulic buffer rod close to the box cover. A piston block is fixedly connected to one end of the hydraulic buffer rod inside the hydraulic cylinder. A connecting spring is arranged between the piston block and the hydraulic cylinder.

[0011] In one or more embodiments of this utility model, the cover and the screen box cooperate to form a screening cavity. This facilitates semi-enclosed screening of materials added to the feed pipe through the screening cavity, reducing the occurrence of dust. A screen is fixedly installed inside the screen box. The material added to the feed pipe is screened through the screen.

[0012] In one or more embodiments of this utility model, side plates are integrally formed on both sides of the feeding limiting frame. The side plates limit the material conveyed between the feeding limiting frame and the guide plate, reducing the possibility of material falling along the side of the feeding limiting frame. Fixed ear plates are integrally formed on both sides of the guide plate. The guide plate is assembled and fixed by assembling and fixing the fixed ear plates. Several evenly distributed countersunk bolt holes are provided on the fixed ear plates. The countersunk bolt holes facilitate the assembly of the fixed ear plates.

[0013] In one or more embodiments of this utility model, a plurality of assembly bolts are fixedly connected between the fixed ear plate and the feed limiting frame. These assembly bolts secure the feed limiting frame and the guide plate, facilitating subsequent disassembly and replacement of the guide plate according to actual conditions. A guide block is integrally formed on the side of the guide plate opposite to the limiting pin. The guide block guides and limits the flow of material conveyed on the guide plate.

[0014] In one or more embodiments of this utility model, a connecting and limiting cylinder is slidably fitted onto the side of the connecting rod close to the box cover. The connecting and limiting cylinder serves to limit the assembly and sliding movement of the connecting rod. A sliding connecting block is fixedly connected to one end of the connecting rod located inside the connecting and limiting cylinder. The sliding connecting block supports and limits the connecting rod, and the connecting rod can also be supported and limited by the mutual limiting between the sliding connecting block and the connecting and limiting cylinder.

[0015] In one or more embodiments of this utility model, a tension spring is provided between the sliding connecting block and the connecting limiting cylinder, and the two ends of the tension spring are fixedly connected to the sliding connecting block and the connecting limiting cylinder, respectively. The contraction and reset of the tension spring provides a soft connection between the sliding connecting block and the connecting limiting cylinder, reducing the adverse effects of the material impacting the guide plate on the limiting pin.

[0016] In one or more embodiments of this utility model, positioning pins are fixedly connected to both sides of the feeding limit frame, and the positioning pins are hinged to the hydraulic buffer rod. The hydraulic buffer rod, in cooperation with the positioning pins, pulls and limits the feeding limit frame. A connecting limit seat is hinged between the hydraulic cylinder and the box cover. The connecting limit seat limits the assembly of the hydraulic cylinder and the box cover.

[0017] In one or more embodiments of this utility model, the hydraulic cylinder is filled with buffer hydraulic oil. The piston block is buffered and limited by regulating the circulation speed of the buffer hydraulic oil, thereby facilitating the guide plate to buffer and limit the flow of material added to the tank cover. The piston block divides the hydraulic cylinder into a return chamber and a compression chamber, and the connecting spring is arranged in the compression chamber. The contraction and return of the connecting spring provides support and limitation for the piston block.

[0018] In one or more embodiments of this utility model, the piston block is provided with a plurality of damping guide holes, and the two ends of the plurality of damping guide holes are respectively connected to the return chamber and the compression chamber. This facilitates the circulation of the buffer pressure oil in the return chamber and the compression chamber under the action of the damping guide holes.

[0019] In one or more embodiments of this utility model, the cross-section of the damping guide hole is trapezoidal, and the diameter of the end of the damping guide hole close to the compression chamber is smaller than the diameter of the other end. This allows the buffer hydraulic oil to flow from the compression chamber to the return chamber at a speed lower than the return speed under the action of the damping guide hole, thereby limiting the reset state of the piston block and buffering the piston block and the hydraulic buffer rod.

[0020] Compared with the prior art, the linear screen for mineral processing disclosed in this utility model can buffer, limit and guide the material added from top to bottom by setting a split feeding limiting mechanism and a hydraulic buffer mechanism, which reduces the risk of deformation and damage to the screen due to material impact, extends the service life of the screen, and reduces the use and maintenance cost of the linear screen for mineral processing. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a partial structural cross-sectional view of a linear screen for mineral processing according to one embodiment of the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of the structure at point A in the middle;

[0024] Figure 3 for Figure 1 Schematic diagram of the structure at point B;

[0025] Figure 4 This is a partial structural schematic diagram of a linear screen for mineral processing according to one embodiment of the present invention;

[0026] Figure 5 This is a perspective view of a linear screen for mineral processing in one embodiment of the present invention.

[0027] Explanation of key figure labels:

[0028] 1-Screen box, 101-Box cover, 102-Feed pipe, 103-Screen mesh, 2-Split-type feeding limit mechanism, 201-Feed limit frame, 202-Guide plate, 203-Limit pin, 204-Connecting rod, 205-Side plate, 206-Fixed ear plate, 207-Assembly bolt, 208-Guide block, 209-Traction limit cylinder, 210-Sliding connecting block, 211-Traction spring, 3-Hydraulic buffer mechanism, 301-Hydraulic buffer rod, 302-Hydraulic cylinder, 303-Piston block, 304-Connecting spring, 305-Positioning pin, 306-Connecting limit seat, 307-Return chamber, 308-Compression chamber, 309-Damping guide hole. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0030] like Figures 1 to 5 As shown, a linear screen for mineral processing in one embodiment of this utility model includes: a screen box 1, a box cover 101, a feed pipe 102, a split-type feed limiting mechanism 2, and a pair of hydraulic buffer mechanisms 3.

[0031] like Figure 5 As shown, a cover 101 is fixedly connected to the top of the screen box 1, and the cover 101 and the screen box 1 cooperate to form a screening cavity. This facilitates the semi-enclosed screening of materials added to the feed pipe 102 through the screening cavity, reducing the occurrence of dust.

[0032] like Figure 5 As shown, a feed pipe 102 is fixedly mounted on the top of the box cover 101. This facilitates the addition of materials to be screened into the screen box 1 through the feed pipe 102.

[0033] like Figure 1 As shown, a screen 103 is fixedly installed inside the screen box 1. The material added by the feed pipe 102 is screened through the screen 103.

[0034] like Figures 1 to 4 As shown, the split-type feeding limiting mechanism 2 is assembled inside the screen box 1. The split-type feeding limiting mechanism 2 includes a feeding limiting frame 201, which is arranged directly below the feeding pipe 102. The feeding limiting frame 201 serves to limit the assembly of the guide plate 202.

[0035] like Figures 1 to 4 As shown, both sides of the feeding limit frame 201 are integrally formed with side plates 205. The side plates 205 limit the material conveyed on the feeding limit frame 201 and the guide plate 202, reducing the possibility of material falling along the side of the feeding limit frame 201.

[0036] like Figures 1 to 4 As shown, a guide plate 202 is fixedly installed inside the feed limiting frame 201. The guide plate 202 buffers, limits, and guides the material to be screened conveyed by the feed pipe 102.

[0037] like Figures 1 to 4 As shown, both sides of the guide plate 202 are integrally formed with fixing ear plates 206. The guide plate 202 is assembled and fixed by assembling and fixing the fixing ear plates 206.

[0038] Specifically, the fixing lug 206 has several evenly distributed countersunk bolt holes. The countersunk bolt holes facilitate the assembly of the fixing lug 206.

[0039] like Figure 4 As shown, a number of assembly bolts 207 are fixedly connected between the fixed ear plate 206 and the feed limiting frame 201. The feed limiting frame 201 and the guide plate 202 are assembled and limited by the assembly bolts 207, which facilitates the subsequent disassembly and replacement of the guide plate 202 according to the actual situation.

[0040] like Figure 4 As shown, a guide block 208 is integrally formed on the side of the guide plate 202 opposite to the limiting pin 203. The guide block 208 guides and limits the material conveyed on the guide plate 202.

[0041] like Figures 1 to 4As shown, a limiting pin 203 is fixedly connected to one side of the feed limiting frame 201, and connecting rods 204 are hinged to both ends of the limiting pin 203. The feed limiting frame 201 is assembled and limited by the cooperation between the limiting pin 203 and the connecting rods 204.

[0042] like Figures 1 to 4 As shown, a connecting rod 204 is slidably fitted with a retaining sleeve 209 on the side close to the cover 101. The retaining sleeve 209 serves to limit the assembly and sliding movement of the connecting rod 204.

[0043] like Figures 1 to 2 As shown, a sliding connecting block 210 is fixedly connected to one end of the connecting rod 204 located inside the connecting and limiting cylinder 209. The sliding connecting block 210 supports and limits the connecting rod 204. At the same time, the connecting rod 204 can be supported and limited by the mutual limiting between the sliding connecting block 210 and the connecting and limiting cylinder 209.

[0044] like Figures 1 to 2 As shown, a tension spring 211 is provided between the sliding connecting block 210 and the connecting limiting cylinder 209. The two ends of the tension spring 211 are fixedly connected to the sliding connecting block 210 and the connecting limiting cylinder 209, respectively. The contraction and reset of the tension spring 211 provides a soft connection between the sliding connecting block 210 and the connecting limiting cylinder 209, reducing the adverse effects of the impact of the material and the guide plate 202 on the limiting pin 203.

[0045] like Figures 1 to 3 As shown, a pair of hydraulic buffer mechanisms 3 are fixedly assembled between the feed limit frame 201 and the box cover 101. The hydraulic buffer mechanism 3 includes a hydraulic buffer rod 301, which is hinged to the feed limit frame 201. The feed limit frame 201 is connected and limited by the hydraulic buffer rod 301. At the same time, the feed limit frame 201 can be buffered and limited by the hydraulic buffer rod 301.

[0046] like Figures 1 to 3 As shown, a hydraulic cylinder 302 is slidably mounted on the side of the hydraulic buffer rod 301 close to the cover 101. The hydraulic cylinder 302 serves to assemble and limit the sliding movement of the hydraulic buffer rod 301 and the piston block 303.

[0047] Specifically, the hydraulic cylinder 302 is filled with buffer hydraulic oil. The piston block 303 is buffered and limited by adjusting the circulation speed of the buffer hydraulic oil, so that the guide plate 202 can buffer, guide and limit the material added at the box cover 101.

[0048] like Figures 1 to 3As shown, a piston block 303 is fixedly connected to one end of the hydraulic buffer rod 301 located inside the hydraulic cylinder 302. The piston block 303 supports and limits the movement of the hydraulic buffer rod 301. At the same time, the hydraulic buffer rod 301 can be buffered by limiting the movement of the piston block 303.

[0049] like Figures 1 to 3 As shown, a connecting spring 304 is arranged between the piston block 303 and the hydraulic cylinder 302. The piston block 303 is supported and reset by the contraction and reset of the connecting spring 304.

[0050] like Figures 1 to 3 As shown, the piston block 303 divides the hydraulic cylinder 302 into a return chamber 307 and a compression chamber 308, and the connecting spring 304 is arranged in the compression chamber 308. The contraction and reset of the connecting spring 304 provides support and limits for the piston block 303.

[0051] like Figures 1 to 3 As shown, the piston block 303 has multiple damping guide holes 309, and the two ends of the multiple damping guide holes 309 are connected to the return chamber 307 and the compression chamber 308, respectively. This allows the buffer pressure oil to circulate in the return chamber 307 and the compression chamber 308 under the action of the damping guide holes 309.

[0052] Preferably, the damping guide hole 309 has a trapezoidal cross-section, and the diameter of the end of the damping guide hole 309 closest to the compression chamber 308 is smaller than the diameter of the other end. This allows the buffer hydraulic oil to flow from the compression chamber 308 to the return chamber 307 at a speed lower than the return speed under the action of the damping guide hole 309, thereby limiting the reset state of the piston block 303 and buffering the piston block 303 and the hydraulic buffer rod 301.

[0053] like Figures 1 to 3 As shown, positioning pins 305 are fixedly connected to both sides of the feed limiting frame 201, and the positioning pins 305 are hinged to the hydraulic buffer rod 301. The hydraulic buffer rod 301, in cooperation with the positioning pins 305, pulls and limits the feed limiting frame 201. A connecting limiting seat 306 is hinged between the hydraulic cylinder 302 and the box cover 101. The connecting limiting seat 306 limits the assembly of the hydraulic cylinder 302 and the box cover 101.

[0054] In practical use, the material to be screened can be added to the screen box 1 from top to bottom along the feed pipe 102. The material conveyed along the feed pipe 102 can be limited and conveyed under the action of the feed limit frame 201 and the guide plate 202. After the impact force of the material is buffered by the feed limit frame 201 and the guide plate 202, it is conveyed to the screen 103 for screening.

[0055] When the material is conveyed from top to bottom onto the guide plate 202, the tension spring 211 can be stretched by the sliding connecting block 210 to pull and limit one end of the feed limit frame 201, thereby reducing the risk of deformation of the limit pin 203 due to material impact. At the same time, the guide plate 202 and the feed limit frame 201 can be pulled and moved by the hydraulic buffer rod 301 due to material impact.

[0056] During the pulling and moving process of the hydraulic buffer rod 301, the hydraulic buffer rod 301 can stretch the piston block 303. At this time, the piston block 303 can move with the movement of the hydraulic buffer rod 301, thereby reducing the volume of the return chamber 307. This allows the buffer pressure oil in the return chamber 307 to be transported to the compression chamber 308 along the damping guide hole 309. When the impact force disappears, the piston block 303 can be reset under the action of the connecting spring 304. At this time, the volume of the compression chamber 308 decreases under the action of the piston block 303, allowing the buffer pressure oil in the compression chamber 308 to flow back to the return chamber 307 along the damping guide hole 309. Furthermore, since the diameter of the damping guide hole 309 at one end close to the return cavity 307 is larger than the diameter at the other end, the speed at which the buffer pressure oil flows back from the compression cavity 308 to the return cavity 307 is less than the speed at which it is conveyed from the return cavity 307 to the compression cavity 308. As a result, the recovery speed of the piston block 303 is less than the stretching speed, thereby buffering and limiting the piston block 303 and reducing the impact of the material on the guide plate 202.

[0057] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A linear screen for ore dressing, characterized in that, The utility model relates to a screening device, including: The upper side of the sieve box is fixedly connected with a box cover, and the upper side of the box cover is fixedly equipped with a feeding pipe; A split type feeding limiting mechanism is equipped in the sieve box, and the split type feeding limiting mechanism includes a feeding limiting frame, the feeding limiting frame is arranged directly below the feeding pipe, a guide plate is fixedly equipped in the feeding limiting frame, a limiting pin shaft is fixedly connected to one side of the feeding limiting frame, and connecting rods are hingedly connected to both ends of the limiting pin shaft; A pair of hydraulic buffer mechanisms are fixedly equipped between the feeding limiting frame and the box cover, the hydraulic buffer mechanism includes a hydraulic buffer rod, the hydraulic buffer rod is hingedly connected to the feeding limiting frame, a hydraulic cylinder is slidingly equipped on one side of the hydraulic buffer rod close to the box cover, a piston block is fixedly connected to one end of the hydraulic buffer rod in the hydraulic cylinder, and a connecting spring is arranged between the piston block and the hydraulic cylinder.

2. A linear screen for mineral processing according to claim 1, characterized in that The box cover and the sieve box cooperate to form a screening cavity, and a screen is fixedly equipped in the sieve box.

3. A linear screen for mineral processing according to claim 1, characterized in that Side plates are integrally formed on both sides of the feeding limiting frame, fixed lug plates are integrally formed on both sides of the guide plate, and a plurality of evenly distributed countersunk bolt holes are formed in the fixed lug plates.

4. A linear screen for mineral processing according to claim 3, characterised in that A plurality of assembly bolts are fixedly connected between the fixed lug plates and the feeding limiting frame, and guide blocks are integrally formed on one side of the guide plate away from the limiting pin shaft.

5. The linear screen for mineral processing according to claim 1, characterized in that, A linkage limiting cylinder is slidingly equipped on one side of the connecting rod close to the box cover, and a sliding connecting block is fixedly connected to one end of the connecting rod in the linkage limiting cylinder.

6. A linear screen for mineral processing according to claim 5, characterised in that A pulling spring is arranged between the sliding connecting block and the linkage limiting cylinder, and both ends of the pulling spring are fixedly connected to the sliding connecting block and the linkage limiting cylinder, respectively.

7. The linear screen for mineral processing according to claim 1, characterized in that, Positioning pin rods are fixedly connected to both sides of the feeding limiting frame, the positioning pin rods are hingedly connected to the hydraulic buffer rod, and a connecting limiting seat is hingedly equipped between the hydraulic cylinder and the box cover.

8. A linear screen for mineral processing according to claim 1, characterized in that The hydraulic cylinder is filled with buffer hydraulic oil, the piston block divides the hydraulic cylinder into a reflux cavity and a compression cavity, and the connecting spring is arranged in the compression cavity.

9. A linear screen for mineral processing according to claim 8, characterised in that A plurality of damping flow guide holes are formed in the piston block, and both ends of the plurality of damping flow guide holes are connected to the reflux cavity and the compression cavity, respectively.

10. A linear screen for mineral processing according to claim 9, characterized in that The cross section of the damping flow guide hole is in a trapezoidal shape, and the diameter of one end of the damping flow guide hole close to the compression cavity is smaller than the diameter of the other end.

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