Safe and stable type disc vibrating screen for polyacrylamide production

Abstract

The application relates to a safe and stable disc vibrating screen for polyacrylamide production, belonging to the technical field of vibrating screens, which comprises a base, a screen body and supporting springs, the base is uniformly provided with a plurality of sliding sleeves in the circumferential direction, the sliding sleeves are fixedly connected with the base, sliding cavities are formed in the sliding sleeves in the vertical direction, adjusting blocks and damping blocks are slidably arranged in the sliding cavities, the damping blocks are located above the adjusting blocks, the supporting springs are arranged between the adjusting blocks and the damping blocks and drive the damping blocks to move away from the adjusting blocks, the damping blocks abut against the top of the sliding cavities, all the damping blocks are fixedly connected with the screen body, an adjusting mechanism is further arranged on the base, the adjusting mechanism is used for driving all the adjusting blocks to synchronously slide, and a shielding cover for preventing workers from directly contacting the adjusting mechanism is detachably arranged on the base. The application has the effect that the elastic potential energy of the supporting springs can be conveniently adjusted to precisely relieve the amplitude and reduce vibration.

Description

Technical Field

[0001] This application relates to the field of vibrating screen technology, and in particular to a safe and stable disc vibrating screen for the production of polyacrylamide. Background Technology

[0002] Polyacrylamide, an important high-molecular polymer, is widely used in water treatment, oil extraction, papermaking, textiles, and other fields, often as a flocculant, thickener, or retention aid. In actual production, it is necessary to remove clumps from powdered polyacrylamide.

[0003] Disc vibrating screens are mainly used for material screening. They are screening devices that achieve high-precision screening by changing the curve shape of the screen surface's motion trajectory and thus altering the material's movement trajectory on the screen surface. A typical disc vibrating screen includes a base, a screen body with an internal screen mesh, and a vibrating motor. The base and screen body are connected by support springs. The vibrating motor is connected to the screen body and drives its vibration. The support springs in the vibrating screen serve both as vibration damping devices and as part of the overall elastic structure of the equipment, providing cushioning.

[0004] In the process of developing this application, it was found that the technology has at least the following problems: When screening, the mass, density and weight of the material screened each time are not the same. The existing support springs used on disc vibrating screens are directly connected to the base and the vibrating screen disc. It is difficult to adjust the elastic potential energy of the support springs according to the vibration frequency generated by the external influence and the vibration frequency generated by the screen itself during the screening process. As a result, it is difficult to accurately alleviate the amplitude and reduce vibration, which can easily lead to a shortened service life of the screen disc. Utility Model Content

[0005] In order to facilitate the adjustment of the elastic potential energy of the support spring and achieve precise amplitude reduction and vibration damping, this application provides a safe and stable disc vibrating screen for polyacrylamide production.

[0006] This application provides a safe and stable disc vibrating screen for polyacrylamide production, which adopts the following technical solution: A safe and stable disc vibrating screen for polyacrylamide production includes a base, a screen body, and supporting springs. The base has several sliding sleeves evenly distributed along its circumference, and these sleeves are fixedly connected to the base. Each sliding sleeve has a vertically oriented sliding cavity. An adjusting block and a damping block are slidably disposed within the sliding cavity, with the damping block positioned above the adjusting block. The supporting springs are located between the adjusting block and the damping block, driving the damping block away from the adjusting block. The damping block abuts against the top of the sliding cavity. All damping blocks are fixedly connected to the screen body. An adjusting mechanism is also provided on the base to drive all adjusting blocks to slide synchronously.

[0007] By adopting the above technical solution, when screening polyacrylamide materials of different masses and densities, the adjustment mechanism can drive all adjustment blocks to slide vertically synchronously along the sliding cavity, changing the distance between the damping block and the adjustment block, thereby changing the compression degree of the support spring: if the material is heavier and the vibration frequency is higher, the adjustment block can be moved downward to increase the compression of the support spring, enhance the elastic potential energy of the support spring, and enhance the vibration reduction and amplitude mitigation effect; if the material is lighter and the vibration frequency is lower, the adjustment block can be moved upward to reduce the spring compression, avoiding excessive vibration reduction that would lead to a decrease in screening efficiency.

[0008] Preferably, the adjusting mechanism includes a lead screw, an external gear, an intermediate gear, and a rotating assembly. The lead screw corresponds to a sliding sleeve and is rotatably connected to the base. The lead screw extends into the corresponding sliding sleeve and is threadedly connected to the adjusting block. The external gear is coaxially fixed with the lead screw. The intermediate gear is rotatably connected to the base. All the external gears mesh with the intermediate gear. The rotating assembly is used to drive the intermediate gear to rotate.

[0009] By adopting the above technical solution, when the rotating component drives the intermediate gear to rotate, the intermediate gear meshes synchronously and drives all external gears to rotate, thereby causing each lead screw to rotate synchronously. The rotation of the lead screw is converted into the vertical sliding of the adjusting block, realizing the synchronous adjustment of all adjusting blocks.

[0010] Preferably, the rotating assembly includes a handwheel and a drive gear. The handwheel is rotatably connected to the base, the drive gear is coaxially fixed with the handwheel, and the drive gear meshes with an intermediate gear.

[0011] By adopting the above technical solution, the staff can rotate the handwheel to drive the drive gear to rotate, and the drive gear will then mesh with the transmission intermediate gear to finally achieve the height adjustment of the adjusting block.

[0012] Preferably, a partition is detachably installed on the base, and the drive gear, intermediate gear, and external gear are all located inside the partition.

[0013] By adopting the above technical solution, the diaphragm can isolate the gear transmission structure from the outside world, prevent foreign objects from entering the gear meshing area, reduce gear wear and jamming risks, extend service life, and at the same time prevent workers' clothing and other items from being accidentally caught in the gears when the gears are meshing, thus improving safety.

[0014] Preferably, a viewing groove is provided through the side wall of any of the sliding sleeves, and a scale line is provided on the side of the viewing groove of the sliding sleeve. A pointer is fixedly provided on the adjusting block, and the pointer points to the scale line.

[0015] By adopting the above technical solution, the staff can observe the position of the pointer on the adjustment block through the visual slot, and judge the distance between the adjustment block and the damping block by combining the scale line, thereby determining the compression of the support spring.

[0016] Preferably, a light-transmitting cover is fixedly installed inside the viewing slot.

[0017] By adopting the above technical solution, the light-transmitting cover further prevents foreign objects from entering the sliding cavity without affecting the observation pointer and scale lines, thus avoiding foreign objects from adhering to the adjusting block and damping block and affecting the sliding or damaging the lead screw, thereby improving the safety and service life of the equipment.

[0018] Preferably, a reinforcing frame is fixedly provided at the bottom of the base, and a support block corresponding to the lead screw is integrally formed on the reinforcing frame. The support block is located below the corresponding lead screw, and a thrust ball bearing is provided between the support block and the lead screw. The top end of the thrust ball bearing is fixedly connected to the bottom of the lead screw, and the bottom end of the thrust ball bearing is fixedly connected to the support block.

[0019] By adopting the above technical solution, the thrust ball bearing transmits the axial pressure of the lead screw to the support block, while reducing the friction when the lead screw rotates, making the lead screw rotate more smoothly and reducing the manual adjustment effort.

[0020] Preferably, a guide rail is integrally formed on the side wall of the sliding cavity, and both the adjusting block and the damping block are provided with guide grooves that are adapted to the guide rails. The guide grooves and the guide rails slide and cooperate in the vertical direction.

[0021] By adopting the above technical solution, the cooperation between the guide rail and the guide groove restricts the sliding direction of the adjusting block and the damping block, preventing the adjusting block and the damping block from shifting or rotating in the sliding cavity, and ensuring that the adjusting block moves only in the vertical direction to change the spring compression.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a sliding sleeve, sliding cavity, adjusting block, damping block, and adjusting mechanism, when screening polyacrylamide materials of different masses and densities, the adjusting mechanism can drive all adjusting blocks to slide vertically synchronously along the sliding cavity, change the distance between the damping block and the adjusting block, and thus change the compression degree of the support spring, so as to adjust the elastic potential energy of the support spring and play a role in accurately relieving amplitude and vibration reduction. 2. By setting up lead screws, external gears, intermediate gears, handwheels, and drive gears, the operator can rotate the handwheel to drive the drive gear to rotate, and the drive gear will then mesh with the intermediate gear. The intermediate gear will mesh synchronously and drive all the external gears to rotate, thereby making each lead screw rotate synchronously. The rotation of the lead screws will be converted into the vertical sliding of the adjusting blocks, realizing the synchronous adjustment of all the adjusting blocks. 3. By setting up a viewing slot, scale lines, pointer, and light-transmitting cover, the staff can observe the position of the pointer on the adjustment block through the viewing slot, and judge the distance between the adjustment block and the damping block in combination with the scale lines, thereby determining the initial compression of the support spring. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a safe and stable disc vibrating screen for polyacrylamide production provided in the embodiments of this application.

[0024] Figure 2 yes Figure 1 Enlarged view of section A.

[0025] Figure 3 This is a schematic diagram of the disassembled structure of the sliding sleeve and its interior in an embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the structure of the bottom of the base in an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Base; 11. Sliding sleeve; 111. Cylinder body; 112. Cylinder cover; 113. Sliding cavity; 114. Visible groove; 115. Scale line; 116. Guide rail; 12. Adjusting block; 121. Pointer; 13. Damping block; 14. Partition; 15. Reinforcing frame; 151. Support block; 152. Thrust ball bearing; 16. Guide groove; 2. Screen body; 3. Support spring; 31. Mounting block; 4. Adjusting mechanism; 41. Lead screw; 42. External gear; 43. Intermediate gear; 44. Rotating assembly; 441. Handwheel; 442. Drive gear. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0029] This application discloses a safe and stable disc vibrating screen for polyacrylamide production. (See also...) Figure 1 The vibrating screen comprises a base 1, a screen body 2, and supporting springs 3. The central axes of the base 1 and the screen body 2 are vertical and coincident. Four downward-extending support legs are welded and fixed to the bottom of the base 1, serving as the supporting foundation for the entire vibrating screen. The screen body 2 is located above the base 1. In this embodiment, the screen used for screening materials is located inside the screen body 2. The bottom of the screen body 2 has a discharge port for the concentrated discharge of materials screened by the screen, facilitating collection. A vibrating motor for driving the screen body 2 to vibrate is also provided on the side wall of the screen body 2.

[0030] Reference Figures 1 to 3The upper surface of the base 1 has several sliding sleeves 11 evenly distributed along its circumference. The sliding sleeves 11 are fixedly connected to the base 1, and a sliding cavity 113 is formed vertically within each sliding sleeve 11. In this embodiment, three sliding sleeves 11 are provided, each consisting of a cylindrical body 111 and a cylindrical cover 112. The cylindrical body 111 is a vertically oriented cylinder, with its bottom fixed to the upper surface of the base 1 by welding. The cylindrical cover 112 is detachably mounted on the top of the cylindrical body 111 by bolts. The sliding cavity 113 is formed by combining the inner wall of the cylindrical body 111, the bottom wall of the cylindrical cover 112, and the top wall of the base 1. A guide rail 116 is integrally formed vertically on the side wall of the sliding cavity 113.

[0031] Reference Figures 1 to 3 An adjusting block 12 and a damping block 13 are vertically slidably disposed inside the sliding cavity 113. Specifically, the side walls of the adjusting block 12 and the damping block 13 are provided with guide grooves 16 that are adapted to the guide rail 116. The guide grooves 16 and the guide rail 116 slide and cooperate in the vertical direction, providing guidance for the vertical sliding of the adjusting block 12 and the damping block 13.

[0032] Reference Figures 1 to 3 The damping block 13 is located above the adjusting block 12, and the support spring 3 is located between the adjusting block 12 and the damping block 13, driving the damping block 13 away from the adjusting block 12. In this embodiment, a mounting block 31 is fixed to each end of the support spring 3. The mounting block 31 at the top of the support spring 3 is fixedly connected to the bottom wall of the damping block 13 by adhesive; the mounting block 31 at the bottom of the support spring 3 is fixedly connected to the top wall of the adjusting block 12 by adhesive. The damping block 13 abuts against the top of the sliding cavity 113 (i.e., against the bottom wall of the cylinder cover 112). A support rod extending upward and penetrating the cylinder cover 112 is welded and fixed to the damping block 13, and the top of all the support rods is welded and fixed to the screen body 2. In this way, all the damping blocks 13 are fixedly connected to the screen body 2.

[0033] Reference Figure 3 and Figure 4The base 1 is also equipped with an adjustment mechanism 4, which drives all the adjustment blocks 12 to slide synchronously. Specifically, the adjustment mechanism 4 includes a lead screw 41, an external gear 42, an intermediate gear 43, and a rotating assembly 44. The lead screw 41 corresponds one-to-one with the sliding sleeve 11 and is rotatably connected to the base 1. The lead screw 41 passes through the base 1 vertically, and the top of the lead screw 41 extends into the corresponding sliding sleeve 11 and is threadedly connected to the adjustment block 12. The bottom of the lead screw 41 extends to the bottom of the base 1, and the external gear 42 is coaxially fixed to the bottom of the lead screw 41. Furthermore, a reinforcing frame 15 is welded and fixed to the bottom of the base 1. A support block 151 corresponding to the lead screw 41 is integrally formed on the reinforcing frame 15. The support block 151 is located below the corresponding lead screw 41. A thrust ball bearing 152 is provided between the support block 151 and the lead screw 41. The top end of the thrust ball bearing 152 is fixedly connected to the bottom of the lead screw 41, and the bottom end of the thrust ball bearing 152 is fixedly connected to the support block 151. The thrust ball bearing 152 and the support block 151 are used to bear the axial pressure of the lead screw 41 and reduce the frictional force of the lead screw 41 rotation. The intermediate gear 43 is rotatably connected to the bottom of the base 1 via a bearing, and the axis of the intermediate gear 43 coincides with that of the base 1. All external gears 42 mesh with the intermediate gear 43, and the rotating assembly 44 is used to drive the intermediate gear 43 to rotate.

[0034] Reference Figure 3 and Figure 4 The rotating assembly 44 includes a handwheel 441 and a drive gear 442. The handwheel 441 is rotatably connected to the base 1 via a bearing. The drive gear 442 is located at the bottom of the base 1 and is coaxially fixed with the handwheel 441. The drive gear 442 meshes with the intermediate gear 43. A partition 14 is detachably mounted on the base 1 via bolts. The drive gear 442, intermediate gear 43, external gear 42, and reinforcing frame 15 are all located inside the partition 14. The partition 14 isolates each gear from the outside world, preventing foreign objects from entering the gear meshing area and reducing the risk of gear wear and jamming.

[0035] Reference Figure 2 and Figure 3 A viewing groove 114 is provided through the side wall of any sliding sleeve 11. A scale line 115 is provided on the side of the sliding sleeve 11 with the viewing groove 114. A pointer 121 is fixedly provided on the adjusting block 12. The pointer 121 points to the scale line 115. The value on the scale line 115 indicated by the pointer 121 represents the length of the supporting spring 3. The operator observes the scale indicated by the pointer 121 on the adjusting block 12 through the viewing groove 114, thereby determining the compression of the supporting spring 3. A light-transmitting cover is fixedly provided inside the viewing groove 114. In this embodiment, the light-transmitting cover is made of transparent glass. The light-transmitting cover prevents foreign objects from entering the interior of the sliding cavity 113 without affecting the observation of the pointer 121.

[0036] The implementation principle of a safe and stable disc vibrating screen for polyacrylamide production in this application embodiment is as follows: When it is necessary to screen polyacrylamide materials of different batches, weights, or densities, the operator adjusts the preload of the support spring 3 according to experience or preset parameters. First, the handwheel 441 is rotated, which drives the drive gear 442 to rotate, thereby driving the intermediate gear 43 meshing with the drive gear 442 to rotate. The intermediate gear 43 synchronously drives all external gears 42 to rotate, thereby causing all lead screws 41 to rotate synchronously. The rotational motion of the lead screws 41 is converted into the vertical sliding of the adjusting block 12 along the slide cavity 113, thereby driving all adjusting blocks 12 to rise or fall synchronously. This adjusts the compression of the support spring 3. During the adjustment process, the operator can observe the position of the pointer 121 on the scale line 115 through the light-transmitting cover to achieve precise quantitative control of the spring compression. This facilitates the adjustment of the elastic potential energy of the support spring 3, so as to accurately alleviate the amplitude and reduce vibration. The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A safe and stable type disc vibrating screen for polyacrylamide production, comprising a base (1), a screen body (2), and supporting springs (3), characterized in that: The base (1) has several sliding sleeves (11) evenly distributed in the circumferential direction. The sliding sleeves (11) are fixedly connected to the base (1). A sliding cavity (113) is opened in the vertical direction inside the sliding sleeve (11). An adjusting block (12) and a damping block (13) are slidably arranged in the sliding cavity (113). The damping block (13) is located above the adjusting block (12). The supporting spring (3) is arranged between the adjusting block (12) and the damping block (13) and drives the damping block (13) away from the adjusting block (12). The damping block (13) abuts against the top of the sliding cavity (113). All the damping blocks (13) are fixedly connected to the screen body (2). An adjusting mechanism (4) is also provided on the base (1). The adjusting mechanism (4) is used to drive all the adjusting blocks (12) to slide synchronously.

2. The safe and stable polyacrylamide production disc vibrating screen according to claim 1, characterized in that: The adjustment mechanism (4) includes a lead screw (41), an external gear (42), an intermediate gear (43), and a rotating assembly (44). The lead screw (41) corresponds one-to-one with the sliding sleeve (11) and is rotatably connected to the base (1). The lead screw (41) extends into the corresponding sliding sleeve (11) and is threadedly connected to the adjustment block (12). The external gear (42) is coaxially fixed with the lead screw (41). The intermediate gear (43) is rotatably connected to the base (1). All the external gears (42) mesh with the intermediate gears (43). The rotating assembly (44) is used to drive the intermediate gears (43) to rotate.

3. The safe and stable polyacrylamide production disc vibrating screen according to claim 2, characterized in that: The rotating assembly (44) includes a handwheel (441) and a drive gear (442). The handwheel (441) is rotatably connected to the base (1). The drive gear (442) is coaxially fixed with the handwheel (441). The drive gear (442) meshes with the intermediate gear (43).

4. The safe and stable type disc vibrating screen for polyacrylamide production according to claim 3, characterized in that: A partition (14) is detachably installed on the base (1), and the drive gear (442), intermediate gear (43), and external gear (42) are all located inside the partition (14).

5. The safe and stable polyacrylamide production disc vibrating screen according to claim 2, characterized in that: A visible groove (114) is provided through the side wall of any of the sliding sleeves (11), and a scale line (115) is provided on the side of the visible groove (114) of the sliding sleeve (11). A pointer (121) is fixedly provided on the adjusting block (12), and the pointer (121) points to the scale line (115).

6. The safe and stable polyacrylamide production disc vibrating screen according to claim 5, characterized in that: A light-transmitting cover is fixedly installed inside the viewing slot (114).

7. The safe and stable polyacrylamide production disc vibrating screen according to claim 2, characterized in that: A reinforcing frame (15) is fixedly installed at the bottom of the base (1). A support block (151) corresponding to the lead screw (41) is integrally formed on the reinforcing frame (15). The support block (151) is located below the corresponding lead screw (41). A thrust ball bearing (152) is provided between the support block (151) and the lead screw (41). The top end of the thrust ball bearing (152) is fixedly connected to the bottom of the lead screw (41), and the bottom end of the thrust ball bearing (152) is fixedly connected to the support block (151).

8. The safe and stable disc vibrating screen for polyacrylamide production according to claim 1, characterized in that: The slide cavity (113) has an integrally formed guide rail (116) on its side wall. The adjusting block (12) and the damping block (13) are both provided with guide grooves (16) that are adapted to the guide rail (116). The guide grooves (16) and the guide rail (116) slide and cooperate in the vertical direction.

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