Central transmission hydraulic segmented automatic rake lifting thickener

Abstract

The utility model discloses a central transmission hydraulic segmented automatic rake lifting thickener, and belongs to the technical field of thickeners. The central transmission hydraulic segmented automatic rake lifting thickener comprises a thickener body, a bridge frame is fixed to the upper end of the thickener body, guardrails are arranged on the two sides of the upper end of the bridge frame, a scraper assembly is arranged between the two guardrails, the scraper assembly comprises a mounting plate capable of sliding in the length direction of the bridge frame, a scraper is arranged below the mounting plate, and the scraper is arranged below the mounting plate. Two guide rods are arranged at the upper end of the scraping plate, penetrate through the mounting plate in the vertical direction and are in sliding connection with the mounting plate, the guide rods are sleeved with springs, the two ends of the springs are fixed to the upper end face of the scraping plate and the lower end face of the mounting plate respectively, and the lower end face of the scraping plate is tightly attached to the upper end face of the bridge frame; a through groove is formed in one side of the upper end face of the bridge frame, and the scraper can scrape slurry to the through groove to clean the upper end face of the bridge frame, so that the risk that operators fall down due to wetness and slippery conditions is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of concentrators, and in particular relates to a central transmission hydraulic segmented automatic rake-lifting concentrator. Background Art

[0002] The hydraulic three-cylinder five-drive automatic rake lifting center high-efficiency thickener NXZ-75 is mainly suitable for solid-liquid separation of industrial slurries. It is widely used in the treatment of sludge, wastewater, and waste residue in metallurgy, mining, coal, chemical, building materials, and environmental protection departments, as well as the concentration and purification of solid slurries in industries such as water and sewage treatment. It is of great significance to improve the utilization rate of return water, the concentration of underflow transmission, and environmental protection. The thickener uses the natural sedimentation of material particles in the slurry under the action of their own gravity to complete the concentration. After entering the thickening tank, the material particles in the slurry will gradually settle to the inclined conical bottom of the tank due to their own gravity. That is, the slurry concentration in the thickening tank will show four different concentration zones from top to bottom: the clarification zone, the sedimentation zone, the transition zone and the compression zone. Among them, the high-concentration product settled in the compression zone is gradually raked to the discharge port at the center of the tank bottom by a rotating rake, and then sent to the filter or filter press for further dehydration through a sand pump. The clear water in the upper clarifying zone of the tank is continuously discharged through the overflow weir of the thickener and recycled for reuse.

[0003] During the operation of the thickener, when the amount of material deposited at the bottom of the thickening tank increases and the material cannot be discharged in time, the resistance of the rake frame to scraping the mud increases and the operating pressure increases. To this end, the prior art reduces the operating pressure by setting the rake frame to automatically rise in sections. When the resistance of the rake frame to scraping the mud increases, the rake frame is controlled to rise.

[0004] In addition, in order to facilitate operators to observe the operating status of the concentrator, a bridge is usually set above the concentrator tank. However, under the action of the rotating rake, the slurry will splash onto the supporting surface of the bridge, causing the supporting surface of the bridge to be slippery, which will increase the risk of operators slipping on the bridge. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a central transmission hydraulic segmented automatic rake thickener to solve the problems in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A central transmission hydraulic segmented automatic rake thickener comprises a thickener, a bridge is fixed to the upper end of the thickener, guardrails are provided on both sides of the upper end of the bridge, a scraper assembly is provided between the two guardrails, the scraper assembly comprises a mounting plate that can slide along the length direction of the bridge, a scraper is provided below the mounting plate, two guide rods are provided at the upper end of the scraper, the guide rods pass through the mounting plate in a vertical direction and are slidably connected to the mounting plate, a spring is sleeved on the guide rod, and the two ends of the spring are respectively fixed to the upper end surface of the scraper and the lower end surface of the mounting plate, so that the lower end surface of the scraper is in close contact with the upper end surface of the bridge;

[0008] A through groove is provided on one side of the upper end surface of the bridge, and the scraper can scrape the slurry to the through groove.

[0009] Furthermore, the width of the scraper is equal to the distance between the two guardrails.

[0010] Furthermore, the thickness of the scraper is greater than the thickness of the through groove.

[0011] Furthermore, the mounting plate is slidably connected to the guardrail in the length direction of the bridge frame, and a driving assembly is provided on the guardrail. The driving assembly includes two fixing plates fixed on the guardrail, and a rotatable screw rod is provided between the two fixing plates. The screw rod passes through the mounting plate and is threadedly connected to the mounting plate.

[0012] Furthermore, the thread lead angle of the screw rod is smaller than the equivalent friction angle.

[0013] Furthermore, a protective cover is fixed on the guardrail, and the protective cover can cover the upper and lower sides of the screw rod.

[0014] Furthermore, a clearance groove is provided on one side of the protective cover to make way for the sliding track of the mounting plate.

[0015] Furthermore, the protective cover and the guardrail are fixed by means of bolt connection.

[0016] Furthermore, a blowing assembly is provided on one side of the mounting plate, and the blowing assembly includes a connecting plate fixed on one side of the mounting plate, and a blowing pipe and a blowing pump are fixed on the connecting plate. The blowing pump is connected to the blowing pipe and blows air to the upper end face of the bridge.

[0017] Furthermore, a ladder is provided on one side of the bridge.

[0018] Beneficial effects of the utility model:

[0019] 1. A bridge is set at the upper end of the concentration tank, a through groove is opened on one side of the upper end face of the bridge, and a scraper assembly is set on the bridge. A mounting plate that can slide along the length direction of the bridge is set in the scraper assembly. The mounting plate and the scraper are elastically connected by a spring. Under the elastic force of the spring, the scraper can be close to the upper end face of the bridge. As the mounting plate slides, the slurry splashed onto the upper end face of the bridge can be scraped to the through groove and fall into the concentration tank, thereby cleaning the upper end face of the bridge and reducing the risk of operators falling due to wetness and slipperiness.

[0020] 2. A blowing assembly is set on one side of the mounting plate. The blowing pipe on the blowing assembly blows air toward the upper end face of the bridge frame under the drive of the blowing pump to accelerate the drying of the bridge frame surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the bridge structure of the utility model;

[0024] Figure 3 This is a schematic structural diagram of the scraper assembly of the utility model;

[0025] Figure 4 This is a schematic diagram of the drive assembly structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the overall structure of the blowing assembly of the utility model;

[0027] Figure 6 It is a schematic diagram of the protective cover structure of the present utility model. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying 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 are within the scope of protection of the present invention.

[0029] like Figure 1As shown, a central transmission hydraulic segmented automatic rake thickener includes a thickening tank 1. A support frame 2 is fixed at the lower end of the thickening tank 1 to contact the ground to support and fix the thickening tank 1; a bridge frame 3 is fixed at the upper end of the thickening tank 1 for the operator to stand and conveniently observe the working status of the thickener.

[0030] like Figure 2 As shown, guardrails 31 are provided on both sides of the upper end of the bridge 3 for the operator to hold on to for protection; a scraper assembly 4 is provided between the two guardrails 31, and a through groove 33 is provided on one side of the upper end surface of the bridge 3. The scraper assembly 4 can scrape the slurry on the upper end surface of the bridge 3 to the through groove 33 and drop it into the concentration tank 1. At the same time, during the scraping process, part of the slurry will fall into the concentration tank 1 through the gap between the guardrails 31 on both sides;

[0031] like Figure 3 The scraper assembly 4 includes a mounting plate 41 that can slide along the length direction of the bridge frame 3, and a scraper 42 is provided under the mounting plate 41. The upper end of the scraper 42 is provided with two guide rods 43, which pass through the mounting plate 41 in the vertical direction and are slidably connected to the mounting plate 41. A spring 44 is sleeved on the guide rod 43, and the two ends of the spring 44 are respectively fixed to the upper end surface of the scraper 42 and the lower end surface of the mounting plate 41, thereby realizing an elastic connection between the scraper 42 and the mounting plate 41, and under the elastic force of the spring 44, the lower end surface of the scraper 42 is tightly attached to the upper end surface of the bridge frame 3; and the width of the scraper 42 is equal to the distance between the two guardrails 31, and by controlling the mounting plate 41 to slide along the length direction of the bridge frame 3, the slurry on the upper end surface of the bridge frame 3 can be scraped to the through groove 33, so that the upper end surface of the bridge frame 3 is cleaned, reducing the risk of the operator falling due to wetness and slipperiness;

[0032] In this embodiment, the thickness of the scraper 42 is greater than the thickness of the through groove 33 to prevent the scraper 42 from falling completely into the through groove 33 under the elastic force of the spring 44 when reaching the through groove 33, thereby preventing the scraper 42 from retracting and subsequently running.

[0033] In this embodiment, the mounting plate 41 is slidably connected to the guardrail 31 in the longitudinal direction of the bridge 3, and the driving component 5 is provided on the guardrail 31 to drive the sliding of the mounting plate 41; Figure 4 As shown, the drive assembly 5 includes two fixing plates 51 fixed on the guardrail 31, and a screw rod 52 is rotatably connected between the two fixing plates 51. The screw rod 52 passes through the mounting plate 41 and is threadedly connected to the mounting plate 41. By arranging a motor on one of the fixing plates 51 to rotate the screw rod 52, the mounting plate 41 can be driven to slide, thereby realizing the scraper action.

[0034] It should be noted that in order to ensure that the position of the mounting plate 41 remains stable and stationary (remains stationary on the side of the bridge 3 away from the through groove 33) when the motor is not running (the scraper assembly 4 is not working), the screw rod 52 in this embodiment has a self-locking ability, that is, the thread lead angle of the screw rod 52 is less than the equivalent friction angle.

[0035] In this embodiment, a protective cover 7 is fixed to the guardrail 31. The protective cover 7 can cover the upper and lower sides of the screw rod 52 to prevent the slurry in the concentration tank 1 from splashing onto the screw rod 52, corroding it and causing rust, thereby affecting normal operation;

[0036] like Figure 6 As shown, a clearance groove 71 is provided on one side of the protective cover 7 to make way for the sliding track of the mounting plate 41; and the protective cover 7 is fixed to the guardrail 31 by means of bolt connection, so as to facilitate the disassembly of the protective cover and the maintenance of the screw rod, motor, etc. inside it.

[0037] Of course, the method of driving the mounting plate 41 to slide along the length direction of the bridge frame 3 includes but is not limited to the structures such as the screw rod in this embodiment. In some embodiments, the mounting plate 41 can also be directly driven to slide along the length direction of the bridge frame 3 by setting a telescopic rod, an electric push rod and other driving components on the guardrail 31.

[0038] In addition, it is worth mentioning that the initial position of the scraper assembly 4 is on the side of the bridge 3 away from the through groove 33. By controlling the scraper assembly 4 to slide along the length direction of the bridge 3, the slurry on the upper end surface of the bridge 3 can be scraped off to the maximum extent.

[0039] A blowing assembly 6 is provided on one side of the mounting plate 41. The blowing assembly 6 can blow and dry the upper end surface of the bridge after the slurry is scraped off, thereby further dehumidifying and drying the upper end surface of the bridge 3.

[0040] like Figure 5 As shown, the blowing assembly 6 includes a connecting plate 61 fixed on one side of the mounting plate 41, and a blowing pipe 63 and a blowing pump 62 are fixed on the connecting plate 61. The blowing pump 62 is connected to the blowing pipe 63, so that the blowing pipe 63 blows air to the upper end surface of the bridge frame 3, thereby accelerating the drying of the surface of the bridge frame 3.

[0041] In this embodiment, a ladder 8 is provided on one side of the bridge 3, and the lower end of the ladder 8 is in contact with the ground, so as to facilitate operators to go up and down.

[0042] Working principle:

[0043] By setting a bridge 3 at the upper end of the concentration tank 1, a through groove 33 is opened on one side of the upper end face of the bridge 3, and a scraper assembly 4 is set on the bridge 3, a mounting plate 41 that can slide along the length direction of the bridge 3 is set in the scraper assembly 4, and the mounting plate 41 and the scraper 42 are elastically connected by a spring 44. Under the elastic force of the spring 44, the scraper 42 can be tightly attached to the upper end face of the bridge 3. As the mounting plate 41 slides, the slurry splashed onto the upper end face of the bridge 3 can be scraped to the through groove 33 and fall into the concentration tank, thereby cleaning the upper end face of the bridge 3 and reducing the risk of operators falling due to wetness. By setting a blowing assembly 6 on one side of the mounting plate 41, the blowing pipe 63 on the blowing assembly 6 blows air towards the upper end face of the bridge 3 under the drive of the blowing pump 62, thereby accelerating the drying of the surface of the bridge 3.

[0044] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0045] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A central transmission hydraulic segmented automatic rake thickener, comprising a thickener (1), a bridge (3) being fixed to the upper end of the thickener (1), characterized in that: Guardrails (31) are provided on both sides of the upper end of the bridge (3), and a scraper assembly (4) is provided between the two guardrails (31). The scraper assembly (4) includes a mounting plate (41) that can slide along the length direction of the bridge (3), and a scraper (42) is provided below the mounting plate (41). Two guide rods (43) are provided at the upper end of the scraper (42), and the guide rods (43) pass through the mounting plate (41) in the vertical direction and are slidably connected to the mounting plate (41). A spring (44) is sleeved on the guide rod (43), and the two ends of the spring (44) are respectively fixed to the upper end surface of the scraper (42) and the lower end surface of the mounting plate (41), so that the lower end surface of the scraper (42) is in close contact with the upper end surface of the bridge (3); A through groove (33) is provided on one side of the upper end surface of the bridge (3), and the scraper (42) can scrape the slurry to the through groove (33).

2. A central transmission hydraulic segmented automatic rake thickener according to claim 1, characterized in that: The width of the scraper (42) is equal to the distance between the two guardrails (31).

3. The central transmission hydraulic segmented automatic rake thickener according to claim 1, characterized in that: The thickness of the scraper (42) is greater than the thickness of the through groove (33).

4. The central transmission hydraulic segmented automatic rake thickener according to claim 1, characterized in that: The mounting plate (41) is slidably connected to the guardrail (31) in the longitudinal direction of the bridge (3); a driving assembly (5) is provided on the guardrail (31); the driving assembly (5) comprises two fixing plates (51) fixed on the guardrail (31); a rotatable screw rod (52) is provided between the two fixing plates (51); the screw rod (52) passes through the mounting plate (41) and is threadedly connected to the mounting plate (41).

5. The central transmission hydraulic segmented automatic rake thickener according to claim 4, characterized in that: The thread lead angle of the screw rod (52) is smaller than the equivalent friction angle.

6. The central transmission hydraulic segmented automatic rake thickener according to claim 4, characterized in that: A protective cover (7) is fixed on the guardrail (31), and the protective cover (7) can cover the upper and lower sides of the screw rod (52).

7. The central transmission hydraulic segmented automatic rake thickener according to claim 6, characterized in that: A clearance groove (71) is provided on one side of the protective cover (7) to make way for the sliding track of the mounting plate (41).

8. The central transmission hydraulic segmented automatic rake thickener according to claim 6, characterized in that: The protective cover (7) and the guardrail (31) are fixed by bolt connection.

9. The central transmission hydraulic segmented automatic rake thickener according to claim 1, characterized in that: A blowing assembly (6) is provided on one side of the mounting plate (41). The blowing assembly (6) comprises a connecting plate (61) fixed on one side of the mounting plate (41). An air blowing pipe (63) and an air blowing pump (62) are fixed on the connecting plate (61). The air blowing pump (62) is connected to the air blowing pipe (63) and blows air to the upper end surface of the bridge (3).

10. The central transmission hydraulic segmented automatic rake thickener according to claim 1, characterized in that: A ladder (8) is provided on one side of the bridge (3).

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