Rotary sludge scraping equipment capable of adaptively adjusting height of scraping plate for sewage treatment tank

Abstract

The invention discloses rotary sludge scraping equipment capable of adaptively adjusting the height of a scraping plate for a sewage treatment tank. The rotary sludge scraping equipment comprises a supporting seat, an adjusting assembly arranged at the bottom end of the supporting seat, a sludge scraping assembly arranged at the bottom end of the adjusting assembly, a driving assembly arranged on the supporting seat and connected with the adjusting assembly, and a PLC (Programmable Logic Controller) connected with the driving assembly, the adjusting assembly is used for adjusting the height of the mud scraping assembly; the driving assembly is used for driving the adjusting assembly and the mud scraping assembly to rotate; the PLC is used for adaptively adjusting the height of the mud scraping assembly; the sludge scraping device is reasonable in structural design, the height of the sludge scraping assembly is adaptively adjusted through the adjusting assembly, so that the sludge scraping device can be suitable for installation of sludge treatment ponds with different heights to adapt to automatic adjustment of different sludge amounts in the sewage treatment ponds, and the sludge scraping effect at the bottom of the sewage treatment ponds is guaranteed; the damage caused by large load on the sludge scraper is avoided, and the use stability and reliability are extremely high.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment equipment, and in particular to a rotary mud scraper device for a sewage treatment tank capable of adaptively adjusting the height of a scraper. Background Art

[0002] The gyratory scraper is a device used in sewage treatment plants, water plants and industrial wastewater treatment in large diameter circular sedimentation tanks to remove sludge settled at the bottom of the tank and skim off scum on the surface of the tank. The working principle of the gyratory scraper is to drive the scraper to rotate around the center of the sedimentation tank through a driving device. After the raw water is precipitated in the sedimentation tank, the supernatant is discharged from the overflow weir plate. The sludge settled at the bottom of the tank, driven by the logarithmic spiral scraper, slowly flows along the bottom of the tank to the central mud collection tank and is discharged through the mud discharge pipe. At the same time, the scum on the surface of the tank is concentrated in the area between the scum scraper and the scum baffle. When the working bridge passes through the scum discharge cylinder floating on the surface of the tank, the scum discharge cylinder is pressed below the liquid surface, and the scum is discharged out of the tank through the discharge cylinder.

[0003] In the prior art, the scraper blade of the rotary scraper device for sewage treatment tanks is generally fixedly installed or the height of the scraper blade is manually adjusted. The scraper blade with a fixed height is generally customized according to the height of the sludge sedimentation tank. Since it needs to be customized, the supply cycle is long, which limits the production demand and increases the production cost of the sewage treatment plant. Manual adjustment of the height of the scraper blade requires professional operation, which is inconvenient to use and increases the hidden dangers of use and labor costs. Summary of the invention

[0004] In view of the above-mentioned technical problems, the present invention provides a rotary sludge scraper device for a sewage treatment tank which can adaptively adjust the scraper height.

[0005] The technical solution of the present invention is: a rotary mud scraper device for a sewage treatment tank capable of adaptively adjusting the height of a scraper blade, comprising a support seat, an adjustment component movably arranged at the bottom end of the support seat, a mud scraper component arranged at the bottom end of the adjustment component, a drive component arranged at the upper end surface of the support seat and connected to the adjustment component, and a PLC controller arranged on the support seat and electrically connected to the drive component;

[0006] The adjusting assembly includes an adjusting disk rotatably connected to the bottom surface of the supporting seat, a follower disk arranged below the adjusting disk, and a traction member arranged inside the adjusting disk; a positioning rod is arranged on the bottom surface of the adjusting disk; a positioning sleeve is penetrated on the follower disk and is slidably connected to the positioning rod;

[0007] The sludge scraper assembly includes a mounting frame arranged at the bottom end of the positioning sleeve and a sludge scraper movably arranged inside the mounting frame; a sensing seat slidably engaged with the inner wall of the mounting frame is arranged at the bottom end of the sludge scraper; a pressure sensor is arranged on the inner wall of the mounting frame and above the sensing seat;

[0008] The driving assembly comprises a reducer arranged on the upper end surface of the support seat and a driving motor arranged on the top end of the reducer.

[0009] The PLC controller is electrically connected to the traction member, the driving motor and the pressure sensor respectively.

[0010] Furthermore, a circular track is arranged on the bottom surface of the support seat; a moving seat is arranged below the support seat, one end of which is slidably engaged with the circular track through a sliding ball head, and the other end of which is connected to the output end of the reducer; a moving motor is arranged at the end of the moving seat, and a rotating screw penetrating the moving seat is arranged at the output end of the moving motor; the adjusting disk is slidably engaged with the bottom end of the moving seat and is threadedly connected with the rotating screw;

[0011] Description: A mobile motor is used to drive the rotating screw to rotate, so that the adjusting disk drives the scraper assembly to move on the moving seat under the action of the rotating screw, which facilitates the adjustment of the position of the scraper assembly. Therefore, when the present invention is used, the position of the scraper assembly can be adjusted without moving the supporting seat, so that the sludge at various positions on the bottom of the sewage treatment tank can be scraped off.

[0012] Furthermore, a plurality of limit rods are equidistantly distributed around the adjusting plate, and a limit sleeve is provided on the mounting frame and is slidably engaged with each limit rod in a one-to-one correspondence;

[0013] Note: The cooperation of the limit rod and the limit sleeve can be used to reinforce the connection between the adjusting plate and the follower plate to prevent the adjusting plate from being damaged due to excessive torque driven by the driving component when the scraper assembly contacts the bottom of the sewage treatment tank.

[0014] Furthermore, the upper end surface of the mounting frame is rotatably connected with a damping disk connected to each limit sleeve at the same time; a plurality of clamping blocks are equidistantly distributed in the circumferential direction of the damping disk, and the mounting frame is provided with rubber buffer blocks located on both sides of each clamping block respectively; the adjusting disk is also provided with a damping disk connected to each limit rod;

[0015] Note: When the mounting bracket collides with the bottom of the sewage treatment tank during rotation and causes swinging, the block on the damping disc squeezes the rubber buffer block, which can buffer the vibration generated on the limit sleeve, thereby helping to improve the operating stability of the equipment.

[0016] Furthermore, a retaining sleeve is provided on the outside of the positioning sleeve; each limiting sleeve passes through the retaining sleeve and is fixedly connected to the retaining sleeve; a self-locking component capable of being movably engaged with each limiting rod is provided inside the retaining sleeve;

[0017] Description: By setting up the retaining sleeve, it is beneficial to improve the connection stability between the limit sleeve and the limit rod; by using the self-locking component, the limit rod and the limit sleeve can be kept relatively still, thereby avoiding the traction component being always in a stressed state and increasing power loss.

[0018] Furthermore, an auxiliary plate is provided on the upper end surface of the sludge scraper, the auxiliary plate is movably hinged with the induction seat, an angle adjustment seat slidably connected with the auxiliary plate is slidably connected with the mounting frame, and a second hydraulic rod connected with the angle adjustment seat is provided inside the mounting frame;

[0019] Description: The second hydraulic rod is used to push the angle adjustment seat to move on the mounting frame, so that the sludge scraper rotates along the hinge point between the angle adjustment seat and the sensing seat under the pushing action of the angle adjustment seat, so as to facilitate the adjustment of the inclination angle of the sludge scraper, so that the sludge scraper can be fully fitted with the bottom of the sewage treatment pool, thereby improving the sludge scraping effect.

[0020] Furthermore, two sludge scrapers are provided, and the two sludge scrapers are arranged in parallel on the lower bottom surface of the auxiliary plate, and in the traveling direction of the sludge scrapers, the lengths of the two sludge scrapers decrease successively;

[0021] Note: By setting two sludge scrapers of different lengths, first use the short sludge scraper to scrape off the surface sludge, and then use the other sludge scraper to further scrape off the deeper sludge, which is helpful to reduce the difficulty of scraping sludge at the bottom of the sewage treatment tank, and also helps to reduce the energy consumption of the drive component.

[0022] The working principle of the present invention is:

[0023] When in use, the support seat is clamped at the top opening of the sewage treatment tank, the regulating motor is started by the PLC controller, the regulating motor is used to drive the first bevel gear to rotate, the meshing action of the first bevel gear and the second bevel gear is used to drive the reel to rotate, and the traction cable is retracted and released during the rotation of the reel to adjust the height of the sludge scraper assembly; when the sludge scraper contacts the bottom of the sewage treatment tank, the induction seat moves on the mounting frame and contacts the pressure sensor; at this time, the regulating motor is controlled to be closed by the PLC controller, so that the adaptive adjustment of the height of the sludge scraper is realized; finally, the driving motor is controlled to start by the PLC controller The driving motor is used to drive the reducer to operate, and the adjusting component drives the sludge scraper to rotate at the bottom of the sewage treatment tank under the driving action of the reducer, so as to scrape the sludge at the bottom of the sewage treatment tank to the sludge discharge port; at the same time, during the operation of the equipment, the mobile motor is used to drive the rotating screw to rotate, so that the adjusting disk drives the sludge scraper assembly to move on the moving seat under the action of the rotating screw, and the position of the sludge scraper assembly is adjusted; the second hydraulic rod is used to push the angle adjustment seat to move on the mounting frame, so that the sludge scraper rotates along the hinge point between it and the sensing seat under the driving action of the angle adjustment seat, and the inclination angle of the sludge scraper is adjusted.

[0024] Compared with the prior art, the beneficial effects of the present invention are embodied in the following aspects:

[0025] First, the present invention has a reasonable structural design, and uses an adjustment component to adaptively adjust the height of the sludge scraper component, so that the present invention can be applied to the installation of sludge treatment tanks of different heights, so as to adapt to the automatic adjustment of different sludge amounts in the sewage treatment tank, and ensure the sludge scraping effect at the bottom of the sewage treatment tank, while avoiding damage caused by a large load on the sludge scraper, and has extremely high stability and reliability in use;

[0026] Second, the present invention adopts a half-width sludge scraper for sludge cleaning, which reduces the power loss of the driving component; at the same time, the positions of the adjustment component and the sludge scraping component of the present invention can be adjusted on the moving seat, so that the present invention can be applied to sewage treatment tanks with different apertures, thereby reducing the equipment investment and production cost of the sewage treatment plant;

[0027] Third, the present invention uses the second hydraulic rod to adjust the inclination angle of the sludge scraper, so that the sludge scraper can completely fit the bottom of the sewage treatment tank, improving the sludge scraping effect; at the same time, it can also avoid the sludge scraper from causing damage to the bottom of the sewage treatment tank during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a longitudinal sectional view of the present invention;

[0029] Figure 2 It is a front view of the present invention;

[0030] Figure 3 is a schematic structural diagram of a traction member of the present invention;

[0031] Figure 4 is a schematic diagram of the connection between the damping plate and the mounting frame of the present invention;

[0032] Figure 5 It is a schematic diagram of the connection between the self-locking component and the retaining sleeve of the present invention;

[0033] Figure 6 It is a schematic diagram of the connection between the push plate and the locking block of the present invention;

[0034] Figure 7 is a schematic structural diagram of the mud scraping assembly of the present invention;

[0035] Figure 8 It is a schematic diagram of the connection between the sludge scraper and the auxiliary plate of the present invention;

[0036] Fig. 9 It is a schematic diagram of the connection between the moving seat and the supporting seat of the present invention;

[0037] Among them, 1-support seat, 10-annular track, 2-adjustment component, 20-adjustment disk, 200-positioning rod, 201-sleeve, 21-follow-up disk, 210-positioning sleeve, 22-traction member, 220-adjustment motor, 2200-first bevel gear, 221-reel, 2210-second bevel gear, 222-traction cable, 23-limiting rod, 24-limiting sleeve, 240-damping disk, 241-block, 242-rubber buffer block, 243-through groove, 25-retaining sleeve, 26-self-locking component, 260-locking block, 2 600-first slide bar, 2601-reset spring, 2602-tooth block, 2603-wedge-shaped guide part, 261-push plate, 2610-second slide bar, 2611-push block, 262-first hydraulic rod, 3-sludge scraping assembly, 30-mounting frame, 31-sludge scraper, 310-auxiliary plate, 311-crushing tooth, 32-sensing seat, 33-angle adjustment seat, 34-second hydraulic rod, 4-drive assembly, 40-reducer, 41-drive motor, 5-moving seat, 50-sliding ball head, 51-moving motor, 52 rotating screw. DETAILED DESCRIPTION

[0038] Example 1

[0039] like Figure 1 The rotary mud scraping device for a sewage treatment tank with adaptively adjustable scraper height shown in the figure comprises a support base 1, an adjustment component 2 movably arranged at the bottom end of the support base 1, a mud scraping component 3 arranged at the bottom end of the adjustment component 2, a driving component 4 arranged on the upper end surface of the support base 1 and connected to the adjustment component 2, and a PLC controller arranged on the support base 1 and electrically connected to the driving component 4;

[0040] like Figure 1 , 3 As shown, the adjustment assembly 2 includes an adjustment disk 20 rotatably engaged with the lower bottom surface of the support seat 1, a follower disk 21 arranged below the adjustment disk 20, and a traction member 22 arranged inside the adjustment disk 20 and connected to the follower disk 21; the adjustment disk 20 is hollow inside, a positioning rod 200 is arranged on the lower bottom surface of the adjustment disk 20, and a sleeve 201 is sleeved inside the adjustment disk 20; a positioning sleeve 210 is provided on the follower disk 21 to slide and engage with the positioning rod 200; the traction member 22 includes a positioning sleeve 210 arranged inside the follower disk 21 and located inside the sleeve 201 The adjusting motor 220 is provided on the side, four reels 221 equidistantly distributed between the follower disc 21 and the sleeve 201, and traction cables 222 respectively wound on the reels 221 in a one-to-one correspondence; the output end of the adjusting motor 220 is provided with a first bevel gear 2200; the ends of each reel 221 close to each other penetrate the sleeve 201, and are provided with a second bevel gear 2210 meshingly connected with the first bevel gear 2200; the free ends of each traction cable 222 respectively penetrate the adjusting disc 20, and are respectively connected to the upper end surface of the follower disc 21;

[0041] like Figure 1 , 7 As shown, the sludge scraper assembly 3 includes a mounting frame 30 arranged at the bottom end of the positioning sleeve 210 and a sludge scraper 31 movably arranged inside the mounting frame 30; the sludge scraper 31 is tiltedly arranged inside the mounting frame 30, the top of the sludge scraper 31 is slidably engaged with the inner wall of the mounting frame 30, and the bottom of the sludge scraper 31 is provided with a sensing seat 32 slidably engaged with the inner wall of the mounting frame 30; a pressure sensor is arranged on the inner wall of the mounting frame 30 and above the sensing seat 32;

[0042] like Figure 1 As shown, the driving assembly 4 includes a reducer 40 arranged on the upper end surface of the support base 1 and having its output end connected to the adjustment disk 20 , and a driving motor 41 arranged on the top of the reducer 40 and having its output end electrically connected to the reducer 40 .

[0043] The PLC controller is electrically connected to the regulating motor 220 , the driving motor 41 and the pressure sensor respectively.

[0044] Example 2

[0045] The difference between this embodiment and embodiment 1 is that:

[0046] like Figure 1 , 9 As shown, a circular track 10 is provided on the lower bottom surface of the support seat 1; a moving seat 5 is provided below the support seat 1, one end of which is slidably engaged with the circular track 10 through a sliding ball head 50, and the other end of which is connected to the output end of the reducer 40; a moving motor 51 is provided at the end of the moving seat 5, and a rotating screw 52 passing through the moving seat 5 is provided at the output end of the moving motor 51; the adjusting disk 20 is slidably engaged with the bottom end of the moving seat 5 and is threadedly connected with the rotating screw 52.

[0047] Example 3

[0048] The difference between this embodiment and embodiment 2 is that:

[0049] like Figure 2 , 4 As shown, the adjusting disk 20 is provided with four limit rods 23 equidistantly distributed in the circumferential direction, and the mounting frame 30 is provided with limit sleeves 24 slidably engaged with each limit rod 23 in a one-to-one correspondence; the upper end surface of the mounting frame 30 is rotatably engaged with a damping disk 240 connected to each limit sleeve 24 at the same time; the damping disk 240 is provided with six clamping blocks 241 equidistantly distributed in the circumferential direction, and the mounting frame 30 is provided with rubber buffer blocks 242 respectively located on both sides of each clamping block 241; the adjusting disk 20 is also provided with a damping disk 240 connected to each limit rod 23.

[0050] Example 4

[0051] The difference between this embodiment and embodiment 3 is that:

[0052] like Figure 2 , 5 As shown in Figures 6 and 7, a retaining sleeve 25 is sleeved on the outside of the positioning sleeve 210; each limiting sleeve 24 passes through the retaining sleeve 25 and is fixedly connected to the retaining sleeve 25; a self-locking assembly 26 that can be movably engaged with each limiting rod 23 is arranged inside the retaining sleeve 25; the self-locking assembly 26 is respectively slidably engaged with the locking blocks 260 located on both sides of the limiting sleeve 24 inside the retaining sleeve 25, the pushing plate 261 slidably engaged with the inside of the retaining sleeve 25, and the first hydraulic rod 262 arranged at the top of the retaining sleeve 25; the locking block 260 is slidably engaged with the inner wall of the retaining sleeve 25 through the first sliding rod 2600, and the first sliding rod 2600 is on the first sliding rod 2600 and close to the limiting sleeve 24. A return spring 2601 is sleeved on one side of the retaining sleeve 25 and abuts against the locking block 260; a tooth block 2602 is provided on the side of the locking block 260 close to the limiting sleeve 24, and a wedge-shaped guide portion 2603 is provided on the side of the locking block 260 away from the limiting sleeve 24; a through groove 243 is provided on the side wall of the limiting sleeve 24 and at a position corresponding to the position of the tooth block 2602; the push plate 261 is slidably engaged in the interior of the retaining sleeve 25 through the second sliding rod 2610, and a push block 2611 that can abut against the wedge-shaped guide portion 2603 at the corresponding position is provided on the lower bottom surface of the push plate 261; the output end of the first hydraulic rod 262 penetrates the retaining sleeve 25 and is connected to the push plate 261.

[0053] Example 5

[0054] The difference between this embodiment and embodiment 4 is that:

[0055] like Figure 7 As shown, an auxiliary plate 310 is provided on the upper end surface of the sludge scraper 31, and the auxiliary plate 310 is movably hinged with the sensing seat 32. An angle adjustment seat 33 slidably engaged with the auxiliary plate 310 is slidably engaged with the mounting frame 30, and a second hydraulic rod 34 connected with the angle adjustment seat 33 is provided inside the mounting frame 30.

[0056] Example 6

[0057] This embodiment is different from Embodiment 5 in that:

[0058] like Figure 8 As shown, two sludge scrapers 31 are provided, and the two sludge scrapers 31 are arranged in parallel on the lower bottom surface of the auxiliary plate 310, and in the moving direction of the sludge scraper 31, the lengths of the two sludge scrapers 31 decrease successively, and the lengths of the two sludge scrapers 31 are 610mm and 430mm respectively; the bottom ends of the two sludge scrapers 31 are provided with crushing teeth 311.

[0059] It should be noted that the adjusting motor 220, the first hydraulic rod 262, the second hydraulic rod 34, the reducer 40, the driving motor 41, the moving motor 51, the pressure sensor and the PLC controller used in the present invention all adopt the existing technology; the connection relationship between the PLC controller and the adjusting motor 220, the first hydraulic rod 262, the second hydraulic rod 34, the driving motor 41, the moving motor 51 and the pressure sensor also adopts the existing technology, and no special limitation is made here, and the corresponding product can be selected according to actual needs.

Claims

1. A rotary sludge scraper for a sewage treatment tank capable of adaptively adjusting the scraper height, characterized in that: It comprises a support base (1), an adjustment component (2) movably arranged at the bottom end of the support base (1), a mud scraping component (3) arranged at the bottom end of the adjustment component (2), a driving component (4) arranged on the upper end surface of the support base (1) and connected to the adjustment component (2), and a PLC controller arranged on the support base (1) and electrically connected to the driving component (4); The adjusting assembly (2) comprises an adjusting disk (20) rotatably engaged with the lower bottom surface of the supporting seat (1), a follower disk (21) arranged below the adjusting disk (20), and a traction member (22) arranged inside the adjusting disk (20); a positioning rod (200) is arranged on the lower bottom surface of the adjusting disk (20); a positioning sleeve (210) is provided through the follower disk (21) and is slidably engaged with the positioning rod (200); The sludge scraper assembly (3) comprises a mounting frame (30) arranged at the bottom end of the positioning sleeve (210) and a sludge scraper (31) movably arranged inside the mounting frame (30); a sensing seat (32) slidably engaged with the inner wall of the mounting frame (30) is arranged at the bottom end of the sludge scraper (31); a pressure sensor is arranged on the inner wall of the mounting frame (30) and above the sensing seat (32); The driving assembly (4) comprises a reducer (40) arranged on the upper end surface of the support seat (1) and a driving motor (41) arranged on the top end of the reducer (40). The PLC controller is electrically connected to the traction member (22), the drive motor (41) and the pressure sensor respectively.

2. The rotary sludge scraping equipment for sewage treatment tanks capable of adaptively adjusting the scraper height according to claim 1 is characterized in that: The lower surface of the support seat (1) is provided with an annular track (10); a movable seat (5) is provided below the support seat (1), one end of which is slidably engaged with the annular track (10) via a sliding ball head (50) and the other end of which is connected to the output end of a reducer (40); a movable motor (51) is provided at the end of the movable seat (5), and a rotating screw (52) penetrating the movable seat (5) is provided at the output end of the movable motor (51); the adjusting disk (20) is slidably engaged with the bottom end of the movable seat (5) and is threadedly connected to the rotating screw (52).

3. The rotary sludge scraping equipment for sewage treatment tanks capable of adaptively adjusting the scraper height according to claim 1 is characterized in that: The regulating disk (20) is provided with a plurality of limit rods (23) equidistantly distributed in the circumferential direction, and the mounting frame (30) is provided with limit sleeves (24) which are slidably engaged with each of the limit rods (23) in a one-to-one correspondence.

4. The rotary sludge scraping equipment for sewage treatment tanks capable of adaptively adjusting the scraper height according to claim 3 is characterized in that: The upper end surface of the mounting frame (30) is rotatably engaged with a damping disc (240) which is simultaneously connected to each of the limiting sleeves (24); the damping disc (240) is equidistantly distributed with a plurality of clamping blocks (241) in the circumferential direction; the mounting frame (30) is provided with rubber buffer blocks (242) respectively located on both sides of each of the clamping blocks (241); and the adjusting disc (20) is also provided with a damping disc (240) which is connected to each of the limiting rods (23).

5. The rotary sludge scraping equipment for sewage treatment tanks capable of adaptively adjusting the scraper height according to claim 3 is characterized in that: The positioning sleeve (210) is externally sleeved with a retaining sleeve (25); each of the limiting sleeves (24) passes through the retaining sleeve (25) and is fixedly connected to the retaining sleeve (25); and a self-locking component (26) capable of being movably engaged with each of the limiting rods (23) is disposed inside the retaining sleeve (25).

6. The rotary sludge scraping equipment for sewage treatment tanks capable of adaptively adjusting the scraper height according to claim 1, characterized in that: An auxiliary plate (310) is arranged on the upper end surface of the sludge scraper (31), and the auxiliary plate (310) is movably hinged to the induction seat (32). An angle adjustment seat (33) slidably engaged with the auxiliary plate (310) is slidably engaged with the mounting frame (30), and a second hydraulic rod (34) connected to the angle adjustment seat (33) is arranged inside the mounting frame (30).

7. The rotary sludge scraper for a sewage treatment tank capable of adaptively adjusting the scraper height according to claim 6, characterized in that: Two sludge scrapers (31) are provided, and the two sludge scrapers (31) are arranged in parallel on the lower surface of the auxiliary plate (310), and in the moving direction of the sludge scrapers (31), the lengths of the two sludge scrapers (31) decrease successively.

8. The rotary sludge scraping equipment for sewage treatment tanks capable of adaptively adjusting the scraper height according to claim 1, characterized in that: A limiting rod (23) and a limiting sleeve (24) which are clamped to each other are arranged between the adjusting disk (20) and the mounting frame (30).

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