Grid for sewage pretreatment

Abstract

The utility model provides a grid for sewage pretreatment, which comprises a grid plate, a sliding seat, a movable wheel, a buffer spring, a vertical plate, a transverse plate and a clamping mechanism, the clamping mechanism comprises a double-shaft motor, a screw rod, a bearing, a movable plate and an anti-skid gasket, and the grid plate is arranged in a water inlet of a sewage treatment plant. The bottom of the double-shaft motor and the driving wheel are in contact with the top surface of the side wall of the water inlet, then the double-shaft motor is started, the double-shaft motor can drive the screw rod to rotate, the moving plate can convert the rotating motion of the screw rod into linear motion, and in the moving process of the moving plate, the anti-skid gasket on the side wall of the moving plate can be in contact with the inner side wall and the outer side wall of the water inlet; when sewage flows through the grating plate, the grating plate can be pushed to move, the sliding seat can compress the buffer spring under the action of the driving wheel, the buffer spring can be used for buffering the grating plate, the sewage impact force on the grating plate is reduced, the abrasion is reduced, and the service life of the grating plate is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a grid for sewage pretreatment. Background Art

[0002] With the increase in population and the acceleration of urban construction, the amount of sewage is also increasing. Whether it is urban sewage or rural sewage, it needs to be discharged to the sewage treatment plant for centralized treatment after it is generated. The water treated by the sewage treatment plant can meet the discharge standard or reuse standard so that it can be discharged into the resource water system for treatment or reuse. Before the sewage treatment plant actually treats the sewage, it needs to pre-treat the sewage to ensure the effective operation of the subsequent treatment process and extend the service life of the equipment. The main goal of sewage pre-treatment is to remove or reduce substances in the sewage that are harmful to the subsequent treatment process or affect the treatment efficiency, such as large particles. Particulate suspended matter, fiber matter, grease, etc. Among them, the screen is an important pretreatment equipment and is widely used in various sewage treatment systems. The main function of the screen is to intercept and remove solid suspended matter in sewage to prevent these impurities from entering subsequent treatment units, such as grit chambers, biological reactors, etc., so as to avoid blockage, wear or reduce treatment efficiency. At present, when screens are used in sewage treatment plants, most of them are installed at the water inlet, and the sewage at the water inlet is more concentrated. Since the screen is fixed and has no buffer, the impact of sewage will cause wear of the screen and reduce the service life of the screen, so the screen needs to be replaced frequently, resulting in interruption of the sewage treatment process. Utility Model Content

[0003] In view of this, the utility model proposes a sewage pretreatment grid, which can provide a buffer for the grid plate, reduce the impact force of sewage hitting the grid plate surface, and extend the service life of the grid plate.

[0004] The technical solution of the present utility model is achieved as follows:

[0005] The sliding seat is provided on both sides of the grating plate, and the moving wheel is provided on the bottom surface of the sliding seat for contacting the top surface of the water inlet. The horizontal plate is located on one side of the sliding seat, and the vertical plate is located above the horizontal plate. The buffer spring is connected to the side wall of the sliding seat and the side wall of the vertical plate; the clamping mechanism is provided on the bottom surface of the horizontal plate, and includes a dual-axis motor, a screw rod, a bearing, a movable plate and an anti-slip gasket. The dual-axis motor is provided on the bottom surface of the horizontal plate, and its output shaft is connected to one end of the screw rod. The bearing is relatively provided on the bottom surface of the horizontal plate, and the end of the screw rod away from the dual-axis motor is connected to the bearing. The top surface of the movable plate is slidably connected to the bottom surface of the horizontal plate, the screw rod passes through the movable plate and is screwed to the movable plate, and the anti-slip gasket is provided on the opposite side wall of the movable plate.

[0006] Preferably, it also includes a hollow tube and a telescopic rod, the hollow tube is arranged on the side wall of the vertical plate, the buffer spring is located in the hollow tube, one end of the telescopic rod extends into the hollow tube and is connected to the buffer spring, and the other end is connected to the side wall of the sliding seat.

[0007] Preferably, a slider is provided on the top surface of the movable plate, a slide groove is provided on the bottom surface of the horizontal plate, and the slider is located in the slide groove.

[0008] Preferably, the clamping mechanism further includes an abutment plate, which is arranged on the bottom surface of the dual-axis motor and is used to contact the top surface of the water inlet.

[0009] Preferably, it also includes a slag removal mechanism, which includes an electric push rod and a slag removal plate. The electric push rod is relatively arranged on the side wall of the grille plate toward the flow of sewage, and its output shaft is connected to the top surface of the slag removal plate. The slag removal plate is located below the side wall of the grille plate.

[0010] Preferably, the slag removal mechanism further includes a slag removal scraper bar, which is arranged on the side wall of the slag removal plate, and the side wall of the grid plate is located on the moving path of the slag removal scraper bar.

[0011] Preferably, the slag removal plate is provided with a plurality of water-permeable holes.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] ① Place the grating plate at the water inlet of the sewage treatment plant and make the sliding seat contact the top surface of the water inlet. When sewage flows through the grating plate, the sliding seat will move under the drive of the impeller and compress the buffer spring. The buffer spring reduces the force of sewage impacting the grating plate, reduces equipment wear and extends the service life of the grating plate.

[0014] ② When the grille plate is placed in the water inlet, the horizontal plate will be located above the water inlet. The dual-axis motor can drive the screw to rotate, and the movable plate can convert the rotational motion of the screw into linear motion, so that the movable plate can be clamped on the side wall of the water inlet, completing the fixation of the horizontal plate and the vertical plate, so that the buffer spring can provide buffering for the grille plate;

[0015] ③Anti-slip pads are set on the side walls of the movable plate. The anti-slip pads will contact the inner and outer walls of the water inlet to prevent the movable plate from damaging the side walls of the water inlet. At the same time, they can provide greater friction to ensure the stability of the entire horizontal and vertical plates, so that the buffer springs can provide stable buffering for the grille plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the top view of a sewage pretreatment grid according to the present invention;

[0018] Figure 2 This is a schematic diagram of the connection structure of the clamping mechanism, sliding seat and water inlet of a sewage pretreatment grid of the present utility model;

[0019] Figure 3 This is a structural schematic diagram of a clamping mechanism for a sewage pretreatment grid according to the present invention;

[0020] In the figure, 1. grating plate; 2. sliding seat; 3. driving wheel; 4. buffer spring; 5. vertical plate; 6. horizontal plate; 7. dual-axis motor; 8. screw rod; 9. bearing; 10. moving plate; 11. anti-slip gasket; 12. hollow tube; 13. telescopic rod; 14. slider; 15. slide groove; 16. abutment plate; 17. electric push rod; 18. slag removal plate; 19. slag removal scraper; 20. water hole. DETAILED DESCRIPTION

[0021] In order to better understand the technical content of the present invention, a specific embodiment is provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0022] See also Figures 1 to 3 The utility model provides a sewage pretreatment grid, including a grid plate 1, a sliding seat 2, a moving wheel 3, a buffer spring 4, a vertical plate 5, a horizontal plate 6 and a clamping mechanism. The sliding seat 2 is arranged on both sides of the grid plate 1, the moving wheel 3 is arranged on the bottom surface of the sliding seat 2, and is used to contact the top surface of the water inlet. The horizontal plate 6 is located on one side of the sliding seat 2, the vertical plate 5 is located above the horizontal plate 6, the buffer spring 4 is connected to the side wall of the sliding seat 2 and the side wall of the vertical plate 5; the clamping mechanism is arranged on the bottom surface of the horizontal plate 6. It includes a dual-axis motor 7, a screw rod 8, a bearing 9, a movable plate 10 and an anti-slip gasket 11. The dual-axis motor 7 is arranged on the bottom surface of the horizontal plate 6, and its output shaft is connected to one end of the screw rod 8. The bearing 9 is relatively arranged on the bottom surface of the horizontal plate 6. The end of the screw rod 8 away from the dual-axis motor 7 is connected to the bearing 9. The top surface of the movable plate 10 is slidably connected to the bottom surface of the horizontal plate 6. The screw rod 8 passes through the movable plate 10 and is screwed to the movable plate 10. The anti-slip gasket 11 is arranged on the opposite side wall of the movable plate 10.

[0023] When the filter screen 1 is in the water inlet, the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen 1 is in the water inlet, and the filter screen

[0024] The dual-axis motor 7 can drive the movable plate 10 to move through the screw rod 8. The spacing between the movable plates 10 can be adjusted, so it can be suitable for different water inlets. The anti-slip gasket 11 set on the side wall of the movable plate 10 can not only prevent the movable plate 10 from applying too much external force on the side wall of the water inlet, but also increase the friction force, so that the horizontal plate 6 and the vertical plate 5 are stably fixed on the water inlet, ensuring that one end of the buffer spring 4 is fixed, so as to provide stable buffering for the grille plate 1.

[0025] Preferably, it also includes a hollow tube 12 and a telescopic rod 13, the hollow tube 12 is arranged on the side wall of the vertical plate 5, the buffer spring 4 is located in the hollow tube 12, one end of the telescopic rod 13 extends into the hollow tube 12 and is connected to the buffer spring 4, and the other end is connected to the side wall of the sliding seat 2.

[0026] When sewage impacts the grid plate 1, the sliding seat 2 can push the telescopic rod 13 to move into the hollow tube 12, so that the buffer spring 4 is compressed, thereby achieving buffering. The hollow tube 12 can limit the buffer spring 4 to avoid irregular deformation of the buffer spring 4.

[0027] Preferably, a slider 14 is provided on the top surface of the movable plate 10 , a slide groove 15 is provided on the bottom surface of the transverse plate 6 , and the slider 14 is located in the slide groove 15 .

[0028] When the movable plate 10 converts the rotational motion of the screw rod 8 into linear motion, the slider 14 can move along the slide groove 15. The slide groove 15 can limit the slider 14 to prevent the movable plate 10 from rotating synchronously with the screw rod 8.

[0029] Preferably, the clamping mechanism further includes an abutment plate 16 , which is provided on the bottom surface of the dual-axis motor 7 and is used for contacting the top surface of the water inlet.

[0030] When the grid plate 1 is placed in the water inlet, the abutment plate 16 and the moving wheel 3 can contact the top surface of the water inlet side wall at the same time. The abutment plate 16 can increase the contact area and improve the stability of the horizontal plate 6 and the vertical plate 5.

[0031] Preferably, it also includes a slag removal mechanism, which includes an electric push rod 17 and a slag removal plate 18. The electric push rod 17 is relatively arranged on the side wall of the grid plate 1 towards the flow of sewage, and its output shaft is connected to the top surface of the slag removal plate 18. The slag removal plate 18 is located below the side wall of the grid plate 1.

[0032] During the sewage treatment process, a lot of screen residue will adhere to the grid plate 1. The electric push rod 17 can drive the residue removal plate 18 to rise, so that the screen residue is taken away by the residue removal plate 18, thereby restoring the filtering capacity of the grid plate 1.

[0033] Preferably, the slag removal mechanism further includes a slag removal scraper 19 , which is provided on the side wall of the slag removal plate 18 , and the side wall of the grid plate 1 is located on the moving path of the slag removal scraper 19 .

[0034] The slag scraping strips 19 can contact the side wall of the grid plate 1 , and in the process of following the slag removing plate 18 to rise, most of the slag attached to the grid plate 1 can be scraped off and taken away by the slag removing plate 18 .

[0035] Preferably, a plurality of water-permeable holes 20 are provided on the slag removal plate 18 .

[0036] When the slag removal plate 18 is rising, the sewage can flow along the water permeable holes 20 , thereby preventing the sewage from moving along with the slag removal plate 18 .

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sewage pretreatment grid, characterized in that: The sliding seat is provided on both sides of the grating plate, and the moving wheel is provided on the bottom surface of the sliding seat for contacting the top surface of the water inlet. The horizontal plate is located on one side of the sliding seat, and the vertical plate is located above the horizontal plate. The buffer spring is connected to the side wall of the sliding seat and the side wall of the vertical plate; the clamping mechanism is provided on the bottom surface of the horizontal plate, and includes a dual-axis motor, a screw rod, a bearing, a movable plate and an anti-slip gasket. The dual-axis motor is provided on the bottom surface of the horizontal plate, and its output shaft is connected to one end of the screw rod. The bearing is relatively provided on the bottom surface of the horizontal plate, and the end of the screw rod away from the dual-axis motor is connected to the bearing. The top surface of the movable plate is slidably connected to the bottom surface of the horizontal plate, the screw rod passes through the movable plate and is screwed to the movable plate, and the anti-slip gasket is provided on the opposite side wall of the movable plate.

2. A sewage pretreatment grid according to claim 1, characterized in that: It also includes a hollow tube and a telescopic rod. The hollow tube is arranged on the side wall of the vertical plate. The buffer spring is located in the hollow tube. One end of the telescopic rod extends into the hollow tube and is connected to the buffer spring, and the other end is connected to the side wall of the sliding seat.

3. A sewage pretreatment grid according to claim 1, characterized in that: The top surface of the movable plate is provided with a slider, the bottom surface of the transverse plate is provided with a slide groove, and the slider is located in the slide groove.

4. A sewage pretreatment grid according to claim 1, characterized in that: The clamping mechanism further comprises an abutment plate, which is arranged on the bottom surface of the dual-axis motor and is used for contacting the top surface of the water inlet.

5. The sewage pretreatment grid according to claim 1, characterized in that: It also includes a slag removal mechanism, which includes an electric push rod and a slag removal plate. The electric push rod is relatively arranged on the side wall of the grid plate towards the flow of sewage, and its output shaft is connected to the top surface of the slag removal plate. The slag removal plate is located below the side wall of the grid plate.

6. The sewage pretreatment grid according to claim 5, characterized in that: The slag removal mechanism further includes a slag removal scraping bar, which is arranged on the side wall of the slag removal plate, and the side wall of the grid plate is located on the moving path of the slag removal scraping bar.

7. The sewage pretreatment grid according to claim 5, characterized in that: The slag removal plate is provided with a plurality of water permeable holes.

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