Grille sewage treatment equipment and rotary chain adjusting method thereof

Abstract

The invention discloses grid sewage treatment equipment and a rotary chain adjusting method thereof. In the invention, the grid sewage treatment equipment comprises: a frame; a pair of rotation chains; the first direction is perpendicular to the height direction of the rack; the multiple grating plates are arranged in the surrounding direction of the rotary chain. The rotary driving device drives the pair of rotary chains to drive the grating plate to transmit; each contact sensor is arranged at the bottom of the rack, and one contact sensor corresponds to one rotary chain and is used for detecting the corresponding rotary chain; a pair of lifting devices, wherein each lifting device comprises a lifting piece and a lifting power piece; and the control module is used for controlling the lifting power piece to drive the lifting piece to lift the rotation driving device, the rotation chain and the grating plate to move towards the top of the rack until the contact sensor cannot detect the rotation chain after the contact sensor detects the rotation chain. Therefore, the chain track is not abraded in the long-term operation of the grid sewage treatment equipment.

Description

Technical Field

[0001] The invention relates to a sewage treatment method, in particular to a grid sewage treatment device and a rotary chain adjustment method thereof. Background Art

[0002] The screen sewage treatment equipment is a highly efficient special water treatment equipment. In the field of municipal sewage treatment, whether it is new construction, renovation, water quality upgrade, technical transformation, or replacement of sewage treatment plants, the internal inflow mesh plate fine screen plays an important role, especially in the pretreatment process. It can effectively remove floating objects in the water, such as weeds, paper, cigarette butts, melon seeds, fibers, hair, etc., to ensure the effective implementation of subsequent treatment processes.

[0003] The screen sewage treatment equipment has a revolving chain extending along the height direction of the equipment. The revolving chain drives the screen plate to rotate. However, after the revolving chain runs continuously, the length of the chain will increase due to wear, which will wear out the chain track installed at the bottom of the equipment. Summary of the invention

[0004] The object of the present invention is to provide a grid sewage treatment device and a rotary chain adjustment method thereof, so that the chain track will not be worn during long-term operation.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a grid sewage treatment device, comprising:

[0006] A frame, wherein a pair of guide rails spaced apart from each other along a first direction are disposed at the bottom of the frame;

[0007] A pair of slewing chains, each of which is arranged in the frame and extends along the height direction of the frame; the pair of slewing chains respectively correspond to the pair of guide rails, and each of the slewing chains rotates along its corresponding guide rail; the first direction is perpendicular to the height direction of the frame;

[0008] A plurality of grating plates, both ends of each grating plate are respectively connected to a pair of the rotary chains, and the plurality of grating plates are arranged along the circling direction of the rotary chains; the plurality of grating plates are surrounded to form a circling space;

[0009] A rotary drive device, the rotary drive device is arranged on the frame, and the rotary drive device is connected to the rotary chain, and drives a pair of the rotary chains to drive the grid plate toward the bottom of the frame and the top of the frame;

[0010] A pair of contact sensors, each of which is arranged at the bottom of the frame, one contact sensor corresponds to one of the rotary chains, and is located below the corresponding rotary chains, for detecting the corresponding rotary chains;

[0011] A pair of lifting devices, each of the lifting mechanisms comprising: a lifting member connected to the rotary drive device, and a lifting power member driving the lifting member to lift the rotary drive device;

[0012] A control module, wherein the control module is electrically connected to the rotary drive device, the contact sensor and the lifting power member; the control module is used to control the lifting power member to drive the lifting member to lift the rotary drive device, the rotary chain and the grating plate toward the top of the frame until the contact sensor can no longer detect the rotary chain after the contact sensor detects the rotary chain.

[0013] Compared with the prior art, in the embodiments of the present invention, the slewing drive device drives the slewing chain to drive the grating plate to rotate, and the slewing chain extends along the height direction of the frame. If the slewing chain touches the contact sensor, the slewing chain will grow and wear the guide rail. After the control module receives the contact sensor that detects the slewing chain, it controls the lifting power part to start lifting the slewing drive device, the slewing chain and the grating plate, so that the slewing chain is lifted and pulled up until the contact sensor can no longer detect the slewing chain, thereby preventing the slewing chain from growing and wearing the guide rail, so that the grating sewage treatment equipment can work normally for a long time, and its service life is increased. There is no need to manually adjust the slewing chain, thereby reducing labor.

[0014] An embodiment of the present invention further provides a method for adjusting a rotary chain of a screen sewage treatment device, which is used in the screen sewage treatment device, and comprises:

[0015] Controlling a contact sensor to detect the rotary chain;

[0016] If the rotary chain is detected, the lifting power member is controlled to start the lifting and rotary driving device, the rotary chain and the grille plate to rise;

[0017] After the lifting power member is controlled to start, the contact sensor cannot detect the rotary chain, and the corresponding lifting power member is controlled to be closed.

[0018] In one embodiment, the rack comprises: a frame having an installation space, and a pair of fixing plates arranged on both side end surfaces of the frame; the installation space is used to accommodate the grid plate and the slewing chain;

[0019] The rotary drive device includes: a pair of adjustment plates respectively connected to a pair of fixed plates on one side away from the installation space, and a rotary power member connected to the adjustment plates; the rotary power member drives the rotary chain transmission, each adjustment plate is fixedly connected to the corresponding lifting member, and the adjustment plate is driven by the lifting member to move along the height direction of the fixed plate.

[0020] In one embodiment, the fixing plate has a waist-shaped hole for the rotary power member to penetrate; the adjusting plate covers the waist-shaped hole;

[0021] The fixing plate is provided with a guide slide extending in the height direction of the frame, and the adjustment plate is embedded in the guide slide and can be operably moved along the extension direction of the guide slide.

[0022] In one embodiment, the rotary drive device further comprises: a fixing ring connected to the rotary power member, and an intermediate member connected to the fixing ring;

[0023] The adjustment plate is provided with a pair of limiting members arranged opposite to each other along a second direction, and the intermediate member is arranged between the pair of limiting members; the second direction, the first direction, and the height direction of the rack are perpendicular to each other.

[0024] In one embodiment, each of the guide rails has a pair of guide rail parts, and the guide rail surface of each of the guide rail parts is a concave arc surface; the pair of guide rail parts are separated along the width direction of the rotary chain, and the contact sensor is arranged between the pair of guide rail parts.

[0025] In one embodiment, the frame comprises a bottom frame, a top frame, and a plurality of columns connecting the bottom frame and the top frame; an installation area is formed between one of the columns and the bottom frame, and one of the guide rail parts is installed in one of the installation areas.

[0026] In one embodiment, the frame has a top frame, and the top frame is connected to a limiting guide plate on one side facing the bottom of the frame. The limiting guide plate is provided with a through hole for the lifting member to pass through. The lifting member passes through the limiting guide plate and the top frame and is slidably connected along the height direction of the frame.

[0027] In one embodiment, a distance sensor for sensing the grille plate is disposed on the top of the frame, and the distance sensor is electrically connected to the control module; the control module is used to control the lifting power component to stop driving when receiving a sensing signal from the distance sensor.

[0028] In one embodiment, the grid sewage treatment equipment further comprises:

[0029] An inner slag trough, the inner slag trough is arranged in the rotary space, the notch of the inner slag trough faces the top of the frame, and is used to receive debris dropped from the grid plate; both end surfaces of the inner slag trough are respectively provided with a sewage discharge channel and a water flow channel;

[0030] a brush, the brush being arranged in the rotation space and extending along the first direction, being located below the inner slag groove and being separated from the inner slag groove, and being used for cleaning a side of the grid plate facing the rotation space; and

[0031] A brush driving component is electrically connected to the control module and is used for driving the brush to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0033] Figure 1 is a structural schematic diagram of a grid sewage treatment device according to an embodiment of the present invention;

[0034] Figure 2 is a schematic structural diagram showing the cooperation between the rotary sprocket and the rotary chain according to an embodiment of the present invention;

[0035] Figure 3 is a structural schematic diagram of another state of a grid sewage treatment device according to an embodiment of the present invention;

[0036] Figure 4 yes Figure 3 A partial enlarged view of middle A;

[0037] Figure 5 yes Figure 3 A partial enlarged view of B in the middle;

[0038] Figure 6 is a schematic structural diagram of the cooperation between the rotary drive device and the limiter according to one embodiment of the present invention;

[0039] Figure 7 It is a partial schematic diagram of a fixed plate structure of a grid sewage treatment device according to an embodiment of the present invention;

[0040] Figure numbers: 100, screen sewage treatment equipment; 1, frame; 11, frame; 111, bottom frame; 112, top frame; 113, column; 12, fixed plate; 13, limit guide plate; 131, through hole; 120, waist-shaped hole; 121, guide slide; 2, rotating chain; 20, rotating space; 3, screen plate; 4, rotating drive device; 41, rotating sprocket; 42, adjusting plate; 421, limit member; 43, rotating power member; 431, motor; 432, connecting shaft; 44, fixing ring; 45, middle member; 5, inner slag trough; 51, sewage discharge channel; 52, water flow channel; 6, contact sensor; 7, lifting device; 71, lifting member; 72, lifting power member; 8, brush; 9, brush driving member; 101, nozzle; 102, guide rail; 1021, guide rail part. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can be implemented.

[0042] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other cases, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0043] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed in an open, inclusive sense, ie, should be interpreted as "including, but not limited to."

[0044] The following will be described in detail with reference to the accompanying drawings to provide a clearer understanding of the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0045] References throughout the specification to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0046] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the context clearly dictates otherwise.

[0047] In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but the words "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as restrictive terms.

[0048] Embodiments of the present invention are described below with reference to the accompanying drawings.

[0049] An embodiment of the present invention relates to a grid sewage treatment device 100. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the screen sewage treatment equipment 100 includes: a frame 1, a pair of rotating chains 2, a plurality of screen plates 3, a rotating drive device 4, a pair of contact sensors 6, a pair of lifting devices 7 and a control module. A pair of guide rails 102 spaced relatively along a first direction are provided at the bottom of the frame 1. Each rotating chain 2 is arranged in the frame 1 and extends along the height direction of the frame 1. A pair of rotating chains 2 respectively correspond to a pair of guide rails 102. Each rotating chain 2 rotates along its corresponding guide rail 102. The rotating chain 2 can be slightly close to the guide rail 102 or there is a small distance between the rotating chain 2 and the guide rail 102, which can be understood as each rotating chain 2 rotating along its corresponding guide rail 102. The first direction is perpendicular to the height direction of the frame 1. The two ends of each screen plate 3 are respectively connected to a pair of rotating chains 2, and the plurality of screen plates 3 are arranged along the circumferential direction of the rotating chain 2. The plurality of screen plates 3 surround to form a rotating space 20. The rotary drive device 4 is arranged on the frame 1, and the rotary drive device 4 is connected to the rotary chain 2, and drives a pair of rotary chains 2 to drive the grid plate 3 toward the bottom of the frame 1 and the top of the frame 1. Each contact sensor 6 is arranged at the bottom of the frame 1, one contact sensor 6 corresponds to one rotary chain 2, and is located below the corresponding rotary chain 2, for detecting the corresponding rotary chain 2. Figure 4As shown, each lifting mechanism includes: a lifting member 71 connected to the rotary drive device 4, and a lifting power member 72 driving the lifting member 71 to lift the rotary drive device 4. The control module is electrically connected to the rotary drive device 4, the contact sensor 6 and the lifting power member 72. The control module is used to control the lifting power member 72 to drive the lifting member 71 to lift the rotary drive device 4, the rotary chain 2 and the grid plate 3 toward the top direction of the frame 1 after the contact sensor 6 detects the rotary chain 2.

[0050] Specifically, the lifting power member 72 can be a motor, and the lifting member 71 is a screw lift. The screw on the screw lift is fixedly connected to the adjustment plate 42. The motor drives the screw lift to operate, and the screw on the screw lift moves linearly along its axial direction. The worm of the screw lift drives the turbine to rotate, and a screw nut is installed inside the turbine. The rotation of the turbine drives the screw nut to rotate, and the screw nut drives the screw to move axially.

[0051] like Figure 1 and Figure 4 As shown, the rotary drive device 4 drives the rotary chain 2 to drive the grille plate 3 to rotate, and the rotary chain 2 extends along the height direction of the frame 1. If the rotary chain 2 touches the contact sensor 6, that is, the rotary chain 2 grows, the rotary chain 2 will wear the guide rail 102 during the growth and rotation. After the control module receives the contact sensor 6 that detects the rotary chain 2, it controls the lifting power member 72 to start lifting the rotary drive device 4, the rotary chain 2 and the grille plate 3, so that the rotary chain 2 is lifted and pulled up until the contact sensor 6 can no longer detect the rotary chain 2, thereby preventing the rotary chain 2 from growing and wearing the guide rail 102, so that the grille sewage treatment equipment 100 can work normally for a long time, and the service life is increased, and there is no need to manually adjust the rotary chain 2, thereby reducing labor.

[0052] Furthermore, if Figure 1 and Figure 4 As shown, the frame 1 includes: a frame 11 with an installation space, and a pair of fixed plates 12 arranged on the two side end surfaces of the frame 11, and the installation space is used to accommodate the grid plate 3 and the rotary chain 2. The rotary drive device 4 includes: a pair of adjustment plates 42 respectively connected to the side of the pair of fixed plates 12 away from the installation space, and a rotary power member 43 connected to the adjustment plate 42. The rotary power member 43 drives the rotary chain 2 to transmit, and each adjustment plate 42 is fixedly connected to the corresponding lifting member 71, and the adjustment plate 42 is driven by the lifting member 71 to move along the height direction of the fixed plate 12.

[0053] Furthermore, if Figure 1 and Figure 2As shown, the screen sewage treatment equipment 100 also includes: an inner slag trough 5, a brush 8 and a brush driving member 9. The inner slag trough 5 is arranged in the rotation space 20 and is connected to the frame 1. The notch of the inner slag trough 5 faces the top of the frame 1, and is used to receive the debris dropped from the screen plate 3. The two end surfaces of the inner slag trough 5 respectively have a sewage discharge channel 51 and a water flow channel 52. The brush 8 is arranged in the rotation space 20 and extends along the first direction, is located below the inner slag trough 5, and is separated from the inner slag trough 5, and is used to clean the side of the screen plate 3 facing the rotation space 20. The brush driving member 9 is electrically connected to the control module, and is used to drive the brush 8 to rotate. The brush driving member 9 can be a driving motor.

[0054] Specifically, Figure 1 and Figure 2 As shown, the rotary drive device 4 also includes a rotary sprocket 41, which is meshed with the rotary chain 2. The rotary power member 43 includes a motor 431 and a coupling 432, wherein the motor 431 is connected to the coupling 432, the coupling 432 passes through the rotary sprocket 41, and the rotary chain 2 is sleeved on the rotary sprocket 41. The motor 431 drives the coupling 432 to rotate, and the coupling 432 rotates to drive the rotary sprocket 41, and the rotary sprocket 41 drives the rotary chain 2 to rotate in a circle. Figure 5 As shown, a pair of guide rails 102 are arranged at the bottom of the frame 1 and are spaced apart from each other along a first direction. A pair of slewing chains 2 correspond to the pair of guide rails 102 respectively, and each slewing chain 2 rotates along its corresponding guide rail 102. The first direction is Figure 1 The arrow A in the middle is the direction. When the grating plate 3 is driven by the rotating chain 2 to rotate, the sewage flows through the grating plate 3, and the grating plate 3 drives the debris in the sewage to fall from the top into the inner slag tank 5, and the debris is washed into the inner slag tank 5 through the water flow channel 52 and discharged to the sewage discharge channel 51. In addition, Figure 1 and Figure 7 As shown, a nozzle 101 is also provided on the top of the grid sewage treatment equipment 100 to flush the debris on the grid plate 3 into the inner slag tank 5 .

[0055] in addition, Figure 7 As shown, the fixed plate 12 has a waist-shaped hole 120 for the rotary power member 43 to penetrate, and the adjustment plate 42 covers the waist-shaped hole 120, and the waist-shaped hole 120 extends longitudinally. The fixed plate 12 is provided with a guide slide 121 extending along the height direction of the frame 1, and the adjustment plate 42 is embedded in the guide slide 121 and can be operably moved along the extension direction of the guide slide 121. Therefore, when the lifting power member 72 is lifted, the adjustment plate 42 is stably embedded in the guide slide 121 and moves upward along the guide slide 121, and then the rotary power member 43 can be adjusted and moved upward along the waist-shaped hole 120.

[0056] Furthermore, if Figure 4 and Figure 6As shown, the rotary drive device 4 also includes: a fixed ring 44 connected to the rotary power member 43, and an intermediate member 45 connected to the fixed ring 44. A pair of limit members 421 arranged opposite to each other along the second direction are provided on the adjustment plate 42, and the intermediate member 45 is arranged between the pair of limit members 421. The second direction, the first direction, and the height direction of the frame 1 are perpendicular to each other. The rotary power member 43 is fixedly connected to the fixed ring 44, and the fixed ring 44 is fixedly connected to the intermediate member 45. The limit members 421 are close to the intermediate member 45, and the pair of limit members 421 limits the swing of the intermediate member 45 in the second direction, that is, limits the torsional swing of the rotary power member 43, so that the rotary power member 43 is more stable. The limit member 421 can be a bolt member or a block member connected to the adjustment member. The adjustment plate 42 has a connecting hole for installing the limit member 421. By adjusting the installation of the limit member 421 and the connecting hole, the distance between the pair of limit members 421 can be adjusted, so as to facilitate the installation and adjustment of the rotary power member 43.

[0057] In addition, if Figure 5 As shown, each guide rail 102 has a pair of guide rail parts 1021, and the guide rail 102 surface of each guide rail part 1021 is an inner concave arc surface. The pair of guide rail parts 1021 are separated along the width direction of the rotating chain 2, and the contact sensor 6 is arranged between the pair of guide rail parts 1021. The guide rail part 1021 guides the rotating chain 2. The rotating chain 2 is stretched during long-term use and contacts the contact sensor 6, sending a signal to the control module, and the control module drives the lifting power member 72, so that the lifting power member 72 pulls the lifting member 71 and the rotating drive device 4 to rise together, so that the rotating chain 2 is raised without wearing the guide rail part 1021. In this embodiment, the guide rail part 1021 is an inner guide rail. In order to allow the rotating chain 2 to rotate stably, an outer guide rail corresponding to the inner guide rail is also fixed on the frame 1. The rotating chain 2 is located between the inner guide rail and the outer guide rail, which can allow the rotating chain 2 to rotate stably.

[0058] In addition, if Figure 3 , Figure 4 and Figure 5 As shown, the frame 11 has a bottom frame 111, a top frame 112, and a plurality of columns 113 connecting the bottom frame 111 and the top frame 112. An installation area is formed between a column 113 and the bottom frame 111, and a guide rail portion 1021 is installed in each installation area.

[0059] Furthermore, if Figure 3 , Figure 4As shown, the frame 11 has a top frame 112, and a limiting guide plate 13 is connected to one side of the top frame 112 facing the bottom of the frame 1. A through hole 131 for the lifting member 71 to pass through is provided on the limiting guide plate 13. The lifting member 71 is slidably connected with the limiting guide plate 13 and the top frame 112 along the height direction of the frame 1. The adjustment plate 42 is located below the installation of the limiting guide plate 13. The limiting guide plate 13 can guide the lifting member 71 so that the lifting member 71 can move stably when being lifted. The installation of the limiting guide plate 13 will not interfere with the installation of the lifting power member 72, and the installation layout is more reasonable.

[0060] In addition, a distance sensor for sensing the grid plate 3 is provided on the top of the frame 1, and the distance sensor is electrically connected to the control module. The control module receives the sensing signal of the distance sensor and controls the lifting power member 72 to stop driving, thereby preventing the grid plate 3 from being too high.

[0061] The second embodiment of the present invention relates to a method for adjusting the rotary chain 2 of a screen sewage treatment device 100. Figure 1-Figure 5 As shown, the rotating chain 2 adjustment method is used in the grid sewage treatment equipment 100 in the first embodiment, including:

[0062] Step 100, controlling the contact sensor 6 to detect the rotating chain 2;

[0063] If the rotary chain 2 is detected, in step 200, the lifting power member 72 is controlled to start the lifting rotary drive device 4, the rotary chain 2 and the grid plate 3 to rise;

[0064] Step 300, after the lifting power member 72 is started, the contact sensor 6 cannot detect the rotary chain 2, and the corresponding lifting power member 72 is controlled to be closed.

[0065] It is not difficult to find that this embodiment is a system embodiment corresponding to the first embodiment, and this embodiment can be implemented in conjunction with the first embodiment. The relevant technical details mentioned in the first embodiment are still valid in this embodiment, and in order to reduce repetition, they are not repeated here. Accordingly, the relevant technical details mentioned in this embodiment can also be applied in the first embodiment.

[0066] The step division of the above methods is only for the purpose of clear description. When implemented, they can be combined into one step or some steps can be split and decomposed into multiple steps. As long as they include the same logical relationship, they are all within the scope of protection of this patent; adding insignificant modifications to the algorithm or process or introducing insignificant designs without changing the core design of the algorithm and process are all within the scope of protection of this patent.

[0067] Preferred embodiments of the present invention have been described above in detail, but it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide further embodiments.

[0068] These and other changes can be made to the embodiments in light of the above detailed description.In general, in the claims, the terms used should not be considered limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which these claims are entitled.

[0069] Those skilled in the art will appreciate that the above embodiments are specific embodiments for implementing the present invention, and that in actual applications, various changes may be made in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A grid sewage treatment equipment, characterized in that: include: A frame, wherein a pair of guide rails spaced apart from each other along a first direction are disposed at the bottom of the frame; A pair of slewing chains, each of which is arranged in the frame and extends along the height direction of the frame; the pair of slewing chains respectively correspond to the pair of guide rails, and each of the slewing chains rotates along its corresponding guide rail; the first direction is perpendicular to the height direction of the frame; A plurality of grating plates, both ends of each grating plate are respectively connected to a pair of the rotary chains, and the plurality of grating plates are arranged along the circling direction of the rotary chains; the plurality of grating plates are surrounded to form a circling space; A rotary drive device, the rotary drive device is arranged on the frame, and the rotary drive device is connected to the rotary chain, and drives a pair of the rotary chains to drive the grid plate toward the bottom of the frame and the top of the frame; A pair of contact sensors, each of which is arranged at the bottom of the frame, one contact sensor corresponds to one of the rotary chains, and is located below the corresponding rotary chains, for detecting the corresponding rotary chains; A pair of lifting devices, each of the lifting mechanisms comprising: a lifting member connected to the rotary drive device, and a lifting power member driving the lifting member to lift the rotary drive device; A control module, wherein the control module is electrically connected to the rotary drive device, the contact sensor and the lifting power member; the control module is used to control the lifting power member to drive the lifting member to lift the rotary drive device, the rotary chain and the grating plate toward the top of the frame until the contact sensor can no longer detect the rotary chain after the contact sensor detects the rotary chain.

2. The grid sewage treatment equipment according to claim 1, characterized in that: The frame comprises: a frame having an installation space, and a pair of fixing plates arranged on both side end surfaces of the frame; the installation space is used to accommodate the grid plate and the slewing chain; The rotary drive device includes: a pair of adjustment plates respectively connected to a pair of fixed plates on one side away from the installation space, and a rotary power member connected to the adjustment plates; the rotary power member drives the rotary chain transmission, each adjustment plate is fixedly connected to the corresponding lifting member, and the adjustment plate is driven by the lifting member to move along the height direction of the fixed plate.

3. The grid sewage treatment equipment according to claim 2, characterized in that: The fixed plate has a waist-shaped hole for the rotary power member to penetrate; the adjustment plate covers the waist-shaped hole; The fixing plate is provided with a guide slide extending in the height direction of the frame, and the adjustment plate is embedded in the guide slide and can be operably moved along the extension direction of the guide slide.

4. The grid sewage treatment equipment according to claim 2, characterized in that: The rotary drive device further comprises: a fixing ring connected to the rotary power member, and an intermediate member connected to the fixing ring; The adjustment plate is provided with a pair of limiting members arranged opposite to each other along a second direction, and the intermediate member is arranged between the pair of limiting members; the second direction, the first direction, and the height direction of the rack are perpendicular to each other.

5. The grid sewage treatment equipment according to claim 2, characterized in that: Each of the guide rails has a pair of guide rail parts, and the guide rail surface of each of the guide rail parts is an inwardly concave arc surface; the pair of guide rail parts are separated along the width direction of the rotary chain, and the contact sensor is arranged between the pair of guide rail parts.

6. The grid sewage treatment equipment according to claim 5, characterized in that: The frame comprises a bottom frame, a top frame, and a plurality of columns connecting the bottom frame and the top frame; a mounting area is formed between one of the columns and the bottom frame, and one of the guide rail parts is mounted in one of the mounting areas.

7. The grid sewage treatment equipment according to claim 2, characterized in that: The frame has a top frame, and a limiting guide plate is connected to one side of the top frame facing the bottom of the frame. A through hole is provided on the limiting guide plate for the lifting member to pass through. The lifting member passes through the limiting guide plate and the top frame and is slidably connected along the height direction of the frame.

8. The grid sewage treatment equipment according to claim 1, characterized in that: A distance sensor for sensing the grid plate is arranged on the top of the frame, and the distance sensor is electrically connected to the control module; the control module is used for controlling the lifting power member to stop driving when receiving a sensing signal from the distance sensor.

9. The grid sewage treatment equipment according to claim 1, characterized in that: The grid sewage treatment equipment also includes: An inner slag trough, the inner slag trough is arranged in the rotary space, the notch of the inner slag trough faces the top of the frame, and is used to receive debris dropped from the grid plate; both end surfaces of the inner slag trough are respectively provided with a sewage discharge channel and a water flow channel; a brush, the brush being arranged in the rotation space and extending along the first direction, being located below the inner slag groove and being separated from the inner slag groove, and being used for cleaning a side of the grid plate facing the rotation space; and A brush driving component is electrically connected to the control module and is used for driving the brush to rotate.

10. A method for adjusting a rotary chain of a screen sewage treatment equipment, characterized in that: The grid sewage treatment equipment according to any one of claims 1 to 9 comprises: Controlling a contact sensor to detect the rotary chain; If the rotary chain is detected, the lifting power member is controlled to start the lifting and rotary driving device, the rotary chain and the grille plate to rise; After the lifting power member is controlled to start, the contact sensor cannot detect the rotary chain, and the corresponding lifting power member is controlled to be closed.

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