Double-layer linear sieve

Abstract

The utility model discloses a double-layer linear screen which comprises a base, a screen supporting device and a pressing device. A box body is arranged above the base, a supporting frame is fixed in the box body, a first screen is placed on the supporting frame, and a second screen is arranged above the first screen; the screen supporting device is installed on the two side walls of the box body and comprises a plurality of rotating grooves, first rotating shafts are arranged in the rotating grooves, rotating blocks are rotationally arranged on the first rotating shafts, supporting blocks are fixed to the rotating blocks, and pull rods are fixed to the sides, away from the supporting blocks, of the rotating blocks; the pressing device is installed on the box body and comprises a pair of fixing blocks, sliding rods are inserted into the pair of fixing blocks, lantern rings are fixed to one ends of the sliding rods, L-shaped clamping blocks are rotationally arranged on the pair of lantern rings, a groove is formed in the box body, the L-shaped clamping blocks are arranged in the groove, and a second rotating shaft is fixed between the pair of fixing blocks. According to the utility model, through the related structural design, the screen can be quickly replaced according to different use requirements.

Description

Technical Field

[0001] This utility model belongs to the field of linear screen technology, specifically relating to a double-layer linear screen. Background Technology

[0002] A double-layer linear screen is a screening device consisting of two independent screens, capable of simultaneously screening materials of various particle sizes. It utilizes the principle of linear vibration, driven by a vibrating motor to make the screen body reciprocate along a straight line, achieving material grading and screening. Double-layer linear screens are widely used in industries such as construction and food processing.

[0003] Currently, in the construction industry, when screening ore particles, different requirements are often needed for the particle size depending on the application scenario. Existing double-layer linear screens often cannot replace the screen mesh, or the replacement is quite troublesome.

[0004] Therefore, in order to address the aforementioned technical problems, it is necessary to provide a double-layer linear screen.

[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 invention is to provide a double-layer linear screen that can...

[0007] To achieve the above objectives, a specific embodiment of the present invention provides a double-layer linear screen, comprising: a base, a screen support device, and a pressing device;

[0008] A box is provided above the base, a support frame is fixed inside the box, a first screen is placed on the support frame, and a second screen is provided above the first screen.

[0009] The screen support device is installed on both sides of the box body. The screen support device includes several rotating grooves. Each of the several rotating grooves is provided with a first rotating shaft. A rotating block is rotatably mounted on the first rotating shaft. A support block is fixed on the rotating block. A pull rod is fixed on the side of the rotating block away from the support block.

[0010] The clamping device is installed on the housing. The clamping device includes a pair of fixing blocks. Each pair of fixing blocks is equipped with a sliding rod. One end of the sliding rod is fixed with a collar. An L-shaped clamping block is rotatably mounted on the pair of collars. A groove is cut into the housing. The L-shaped clamping block is located in the groove. A second rotating shaft is fixed between the pair of fixing blocks. A rotating rod is rotatably mounted on the second rotating shaft. A screw is fixed to the end of the rotating rod away from the second rotating shaft.

[0011] In one or more embodiments of this utility model, a spring support is fixed on the base for mounting a first spring base, and the first spring base is fixed between the spring support and the housing for connecting the spring support and the housing, and for shock absorption.

[0012] In one or more embodiments of this utility model, a vibration motor is installed at the bottom of the box to provide kinetic energy, and a plurality of discharge ports are provided on one side of the base for the screened material to flow out.

[0013] In one or more embodiments of this utility model, a control rod is provided outside the box body for connecting the first rotating shaft. Several of the pull rods are rotatably connected to the control rod. One of the pull rods is fixed with a handle. Pulling the handle controls the other pull rods to rotate together with all the rotating blocks.

[0014] In one or more embodiments of this utility model, a groove is chiseled on the outer wall of the box for installing a pulley. The pulley is slidably arranged in the groove, and a second spring is fixed between the pulley and the control rod. The control rod is pulled towards the box by the elastic force of the second spring.

[0015] In one or more embodiments of this utility model, the rotating groove is carved into the two side walls of the box body, and the rotating groove is used to install the first rotating shaft and the rotating block.

[0016] In one or more embodiments of this utility model, the support block is disposed on the support frame and the first screen. By pulling the pull rod, the rotating block is driven to rotate, and the rotating block drives the support block to rotate. The support block presses the first screen onto the support frame. The second screen is disposed on the support block, and the support block is used to support the second screen.

[0017] In one or more embodiments of this utility model, a crossbar is fixed to the end of one pair of sliding rods away from the collar, which serves as a limit to prevent the sliding rods from detaching from the fixing block. A third spring is fixed between the fixing block and the collar, and the elastic force provided by the third spring keeps the collar away from the fixing block.

[0018] In one or more embodiments of this utility model, a rotating rod groove is chiseled on the L-shaped clamping block, the rotating rod is disposed in the rotating rod groove, and the end of the L-shaped clamping block away from the collar presses against the second screen to compress the second screen.

[0019] In one or more embodiments of this utility model, a threaded sleeve is threadedly connected to the screw, and a throttle and a pressure ring are fixed on the threaded sleeve. By rotating the throttle, the threaded sleeve rotates around the screw, and the threaded sleeve drives the pressure ring to move up and down, thereby causing the pressure ring to press down on the L-shaped clamp or release the L-shaped clamp upward.

[0020] Compared with the prior art, this utility model, through its structural design, allows for quick replacement of the screen according to different usage requirements. 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 perspective view of a double-layer linear screen according to an embodiment of the present invention;

[0023] Figure 2 This is a perspective cross-sectional view of the box body in one embodiment of the present invention;

[0024] Figure 3 for Figure 2 The structural diagram shown at point A in the middle;

[0025] Figure 4 for Figure 2 The structural diagram shown at point B in the middle;

[0026] Figure 5 This is a schematic diagram of the structure of the screen support device in one embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the pressing device in one embodiment of the present invention;

[0028] Figure 7 This is a cross-sectional view of the clamping device in one embodiment of the present invention.

[0029] Explanation of key figure labels:

[0030] 1-Base, 101-First spring, 102-Box body, 103-Discharge port, 104-Support frame, 105-First screen, 106-Second screen, 107-Spring support, 108-Vibration motor, 2-Screen support device, 201-Control rod, 202-First rotating shaft, 203-Rotating groove, 204-Rotating block, 205-Support block, 206-Pull rod, 207-Handle 208-Slide groove, 209-Pulley, 210-Second spring, 3-Clamping device, 301-L-shaped clamping block, 302-Fixing block, 303-Slide rod, 304-Crossbar, 305-Third spring, 306-Groove, 307-Rotating rod, 308-Second rotating shaft, 309-Screw, 310-Rotating handle, 311-Pressure ring, 312-Threaded sleeve, 313-Collar, 314-Rotating rod groove. Detailed Implementation

[0031] 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.

[0032] like Figures 1 to 7 As shown, a double-layer linear screen in one embodiment of the present invention includes: a base 1, a screen support device 2, and a pressing device 3.

[0033] like Figures 1 to 2 As shown, a box 102 is mounted above the base 1, and a support frame 104 is fixed inside the box 102 for mounting a first screen 105. The first screen 105 is placed on the support frame 104, and a second screen 106 is mounted above the first screen 105. The double-layer screen of the first screen 105 and the second screen 106 screens the material. A spring support 107 is fixed on the base 1 for mounting a first spring base 101. The first spring base 101 is fixed between the spring support 107 and the box 102 for connecting the spring support 107 and the box 102 and for shock absorption. A vibration motor 108 is mounted at the bottom of the box 102 to provide kinetic energy. Several discharge ports 103 are provided on one side of the base 1. The upper and lower three layers of discharge ports 103 are connected, and the box 102 is separated into three layers by the first screen 105 and the second screen 106, allowing the three different particle sizes of the screened material to flow out of the box 102.

[0034] like Figures 2 to 5As shown, the screen support device 2 is installed on both side walls of the housing 102. The screen support device 2 includes several rotating slots 203 for installing the first rotating shaft 202 and the rotating block 204. The first rotating shaft 202 is provided in each of the several rotating slots 203. The rotating block 204 is rotatably mounted on the first rotating shaft 202. The support block 205 is fixed on the rotating block 204. A pull rod 206 is fixed on the side of the rotating block 204 away from the support block 205. By pulling the pull rod 206, the rotating block 204 is rotated, which drives the support block 205 to rotate. When the rotating block 204 drives the support block 205 to rotate clockwise by a certain angle, the support block 205 can be made to stick to the side wall of the housing 102. A control rod 201 is provided on the outside of the housing 102 for connecting the first rotating shaft 202. Several pull rods 206 are rotatably connected to the control rod 201. A handle 207 is fixed on one of the pull rods 206. Pulling the handle 207 controls the other pull rods 206 to rotate together through the control rod 201.

[0035] like Figures 2 to 5 As shown, a groove 208 is carved into the outer wall of the housing 102 for mounting a pulley 209. The pulley 209 is slidably disposed within the groove 208. A second spring 210 is fixed between the pulley 209 and the control rod 201. The elastic force of the second spring 210 pulls the control rod 201 towards the housing 102, thereby preventing the rotating block 204 from rotating and preventing the support block 205 from shifting position. Rotation slots 203 are carved into both side walls of the housing 102 and are used to mount the first rotating shaft 202 and the rotating block 204. The support block 205 is mounted on the support frame 104 and the first screen 105. By pulling the pull rod 206, the rotating block 204 is driven to rotate, and the rotating block 204 drives the support block 205 to rotate. The support block 205 presses the first screen 105 onto the support frame 104. The second screen 106 is mounted on the support block 205, and the support block 205 is used to support the second screen 106.

[0036] like Figures 6 to 7 As shown, the clamping device 3 is installed on the housing 102. The clamping device 3 includes a pair of fixing blocks 302 for mounting the fixing blocks 302 and the second rotating shaft 308. A sliding rod 303 is inserted into each of the fixing blocks 302. A collar 313 is fixed to one end of each sliding rod 303. An L-shaped clamping block 301 is rotatably mounted on each collar 313, rotating about the sliding rod 303. A groove 306 is cut into the housing 102, and the L-shaped clamping block 301 is located within the groove 306. The second rotating shaft 308 is fixed between the pair of fixing blocks 302. A rotating rod 307 is rotatably mounted on the second rotating shaft 308, with the shaft center of the second rotating shaft 308 located between the sliding rod 303 and the housing 102. A screw 309 is fixed to the end of the rotating rod 307 away from the second rotating shaft 308 for mounting a threaded sleeve 312.

[0037] like Figures 6 to 7 As shown, a crossbar 304 is fixed to the end of a pair of sliding rods 303 away from the collar 313, which serves as a limit to prevent the sliding rods 303 from detaching from the fixing block 302. A third spring 305 is fixed between the fixing block 302 and the collar 313. The elastic force provided by the third spring 305 keeps the collar 313 away from the fixing block 302. A rotating rod groove 314 is carved on the L-shaped clamping block 301. The rotating rod 307 is located in the rotating rod groove 314. When the rotating rod 307 is located in the rotating rod groove 314, the center position of the rotating rod 307 is located on the side of the collar 313's axis biased towards the housing 102. The end of the L-shaped clamping block 301 away from the collar 313 presses against the second screen 106, pressing the second screen 106 tightly. A threaded sleeve 312 is threadedly connected to the screw 309. A handle 310 and a pressure ring 311 are fixed on the threaded sleeve 312. By rotating the handle 310, the threaded sleeve 312 rotates around the screw 309. The threaded sleeve 312 drives the pressure ring 311 to move up and down, thereby causing the pressure ring 311 to press down on the L-shaped clamp 301 or release the L-shaped clamp 301 upward.

[0038] Working principle: First, according to the specific particle size requirements, remove the original screen and replace it with the corresponding double-layer screen. First, turn the handle 310. The handle 310 drives the threaded sleeve 312 to rotate on the screw 309, causing the threaded sleeve 312 to drive the pressure ring 311 to move upward. The pressure ring 311 changes from pressing the L-shaped clamp 301 to the loose state. At the same time, the third spring 305 pushes the collar 313 upward a certain distance through its own elasticity. The collar 313 drives the L-shaped clamp 301 to move upward a certain position, so that the L-shaped clamp 301 does not press the second screen 106. Then, by pulling the handle 310 outward, the rotating rod 307 is moved out of the rotating rod groove 314. Then, the L-shaped clamp 301 is rotated to move it out of the box 102. After that, the second screen 106 is removed.

[0039] Then pull the handle 207. The handle 207 drives the rotating block 204 to rotate through the pull rod 206. The pull rod 206 drives other pull rods 206 to rotate through the control rod 201. The rotating block 204 drives the support block 205 to rotate, so that the support block 205 moves away from the first screen 105. Then the first screen 105 can be removed from the support frame 104. While the control rod 201 moves, the pulley 209 slides in the slide groove 208 through the second spring 210. When the pull rod 206 drives the rotating block 204 to rotate to the other side, after the handle 207 is released, the second spring 210 will pull the control rod 201 towards the box 102 through its own elasticity, preventing the rotating block 204 from rotating and preventing the support block 205 from shifting position.

[0040] Then, replace the first screen 105 with a suitable one, and pull the handle 207 in the opposite direction. The handle 207 pulls the lever 206, which in turn rotates the rotating block 204, causing the support block 205 to rotate and press the support block 205 onto the first screen 105. At this time, the second spring 210 will use its own elasticity to pull the control lever 201 towards the housing 102, preventing the rotating block 204 from rotating and preventing the support block 205 from shifting position. Then, place the second screen 106 on the support block 205, and then rotate the L-shaped clamp 301 to make the L-shaped clamp 105 rotate. The clamping block 301 presses on the second screen 106. Then, by pulling the handle 310, the rotating rod 307 is driven to rotate, so that the rotating rod 307 rotates into the rotating rod groove 314. Then, the handle 310 is rotated, and the handle 310 drives the threaded sleeve 312 to rotate on the screw 309. The threaded sleeve 312 drives the pressure ring 311 to move towards the L-shaped clamping block 301, so that the pressure ring 311 presses down on the L-shaped clamping block 301, thereby pressing the L-shaped clamping block 301 down on the second screen 106. Then, the vibrating motor 108 is started and the material to be screened is poured in for screening.

[0041] 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.

[0042] 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 double-layer linear screen, characterized in that, include: A base, with a box on top of the base, a support frame fixed inside the box, a first screen placed on the support frame, and a second screen above the first screen; A screen support device is installed on both sides of the box. The screen support device includes several rotating grooves. Each of the several rotating grooves is provided with a first rotating shaft. A rotating block is rotatably mounted on the first rotating shaft. A support block is fixed on the rotating block. A pull rod is fixed on the side of the rotating block away from the support block. A clamping device is installed on the housing. The clamping device includes a pair of fixing blocks, each of which is equipped with a sliding rod. One end of each sliding rod is fixed with a collar. An L-shaped clamping block is rotatably mounted on the pair of collars. A groove is cut into the housing, and the L-shaped clamping block is located in the groove. A second rotating shaft is fixed between the pair of fixing blocks. A rotating rod is rotatably mounted on the second rotating shaft, and a screw is fixed to the end of the rotating rod away from the second rotating shaft.

2. The double-layer linear screen according to claim 1, characterized in that, A spring support is fixed on the base, and a first spring base is fixed between the spring support and the housing.

3. A double-layer linear screen according to claim 1, characterized in that, A vibration motor is installed at the bottom of the box, and several discharge ports are provided on one side of the base.

4. A double-layer linear screen according to claim 1, characterized in that, A control rod is provided on the outside of the box, and several of the pull rods are rotatably connected to the first rotating shaft, with a handle fixed on one of the pull rods.

5. A double-layer linear screen according to claim 1, characterized in that, A groove is cut into the outer wall of the box, and a pulley is slidably arranged in the groove. A second spring is fixed between the pulley and the second spring.

6. A double-layer linear screen according to claim 1, characterized in that, The rotating grooves are carved into the two side walls of the box.

7. A double-layer linear screen according to claim 1, characterized in that, The support block is disposed on the support frame and the first screen, and the second screen is disposed on the support block.

8. A double-layer linear screen according to claim 1, characterized in that, A crossbar is fixed to the end of one of the sliding rods away from the collar, and a third spring is fixed between the fixing block and the collar.

9. A double-layer linear screen according to claim 1, characterized in that, The L-shaped clamping block has a rotating rod groove, and the rotating rod is located in the rotating rod groove. The end of the L-shaped clamping block away from the collar is pressed against the second screen.

10. A double-layer linear screen according to claim 1, characterized in that, The screw is threadedly connected to a threaded sleeve, and a throttle and a pressure ring are fixed on the threaded sleeve.

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