Sewage treatment equipment

Abstract

The utility model discloses sewage treatment equipment, which relates to the technical field of sewage treatment and comprises two supports. The rake tooth grating device comprises a shell, a first driving assembly and a rake tooth net chain, the shell is obliquely arranged, the lower end of the shell is used for being hinged to the inner bottom wall of the sewage tank, the shell can be detachably connected to the two supports, the rake tooth net chain can be rotatably connected into the shell, the first driving assembly is arranged on the shell, and the first driving assembly is arranged on the shell. The first driving assembly is used for driving the rake tooth net chain to rotate; the mounting frame is connected to the sewage channel; the second driving assembly is arranged on the mounting frame, and the second driving assembly can drive the upper end of the shell to swing downwards, so that the contact area between the rake tooth net chain and sewage is increased. When the upper end of the rake tooth net chain downwards swings, the contact area of the rake tooth net chain and sewage is increased, so that the rake tooth net chain can fish more garbage in unit time, and the lower end of the rake tooth net chain is effectively prevented from being partially accumulated and blocked by the garbage.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field especially relates to a sewage treatment equipment. BACKGROUND

[0002] The rake tooth grating machine is an important component in the sewage treatment plant, which aims to prevent large volume of garbage from entering the subsequent sewage treatment system to ensure that the subsequent treatment equipment can operate normally. The working principle of the rake tooth grating machine is similar to that of a rake. When the sewage passes through the rake tooth grating machine, the rake teeth will lift the large volume of garbage from the sewage and push it to the top of the grating machine, and then collect the large volume of garbage that falls naturally through the collecting device to achieve the effect of removing the large volume of garbage in the sewage. After the sewage passes through the rake tooth grating machine, it will flow into the subsequent treatment equipment so that the subsequent treatment equipment can treat the sewage.

[0003] In the prior art, the inside and periphery of the sewage treatment plant are usually provided with a sewage channel for the flow of sewage. The rake tooth grating machine is installed in the sewage tank on the sewage channel. The rake tooth grating machine is directly opposite the sewage in the sewage tank, so that the rake tooth grating machine can smoothly lift the garbage in the sewage. When the sewage in the sewage tank carries a large amount of garbage, it is easy to cause the rake tooth grating machine to fail to timely lift the garbage in the sewage, thereby causing some garbage to accumulate and block on the lower end of the rake tooth grating machine, reducing the speed of the sewage passing through the rake tooth grating machine, and affecting the sewage treatment efficiency of the subsequent treatment equipment. SUMMARY

[0004] The utility model aims at least to solve one of the technical problems existing in the prior art. To this end, the utility model provides a sewage treatment equipment, which can ensure the speed of sewage passing through the rake tooth grating machine, thereby ensuring the sewage treatment efficiency of the subsequent treatment equipment.

[0005] According to the sewage treatment equipment of the utility model embodiment, two supports are used to be connected to the left wall and right wall of the sewage channel respectively, so that the two supports are arranged on the left and right sides of the sewage tank on the sewage channel. The rake tooth grating device includes a housing, a first driving assembly and a rake tooth net chain. The housing is inclinedly arranged, and the lower end of the housing is hingedly connected to the inner bottom wall of the sewage tank. The housing is detachably connected to the two supports. The rake tooth net chain is rotatably connected in the housing. The first driving assembly is arranged on the housing and is used to drive the rake tooth net chain to rotate, so that the rake tooth net chain can lift the garbage in the sewage in the sewage tank. The mounting frame is used to be connected to the sewage channel. The second driving assembly is arranged on the mounting frame and can drive the upper end of the housing to swing downward, so as to increase the contact area between the rake tooth net chain and the sewage in the sewage tank.

[0006] At least has the following beneficial effects:

[0007] When the sewage in the sewage tank carries a large amount of garbage, the operator can first make the shell disengage from the connection with the two supports, and then control the second drive assembly to drive the upper end of the shell to swing downward. The rake chain in the shell can swing downward together with the shell, so that the upper end of the rake chain can swing downward and approach the inner bottom wall of the sewage tank. After the upper end of the rake chain swings downward and approaches the inner bottom wall of the sewage tank, the contact area of the rake chain with the sewage increases, so that the rake chain can collect more garbage in unit time, improving the garbage collecting effect and efficiency of the rake chain, and thus the rake chain can timely collect the garbage in the sewage, effectively avoiding that part of the garbage is accumulated and blocked on the lower end of the rake chain, ensuring the speed of the sewage passing through the rake chain, and ensuring the sewage treatment efficiency of the subsequent treatment equipment.

[0008] According to the sewage treatment equipment, the second drive assembly comprises a second driving member, a cable winding drum and a cable, the second driving member is arranged on the mounting frame, the cable winding drum is rotatably connected to the mounting frame, the cable winding drum is used for winding the cable, one end of the cable is connected to the cable winding drum, the other end of the cable is connected to the upper end of the shell, the output end of the second driving member is in transmission connection with the cable winding drum, and the second driving member is used for driving the cable winding drum to rotate, so that the cable winding drum can unwind the cable, and the upper end of the shell swings downward.

[0009] According to the sewage treatment equipment, the second drive assembly further comprises an auxiliary wheel, the auxiliary wheel is rotatably connected to the mounting frame, and a positioning ring groove is formed in the circumferential outer wall of the auxiliary wheel, and the cable is arranged to pass through the positioning ring groove.

[0010] According to the sewage treatment equipment, the second drive assembly further comprises a ratchet wheel, a pawl and a third driving member, the third driving member is arranged on the mounting frame, the pawl is rotatably connected to the mounting frame, the ratchet wheel is connected to the cable winding drum, so that the ratchet wheel can rotate synchronously with the cable winding drum, and the third driving member can drive the pawl to abut against the ratchet wheel, so as to limit the cable winding drum to unwind the cable.

[0011] According to the sewage treatment equipment, the second drive assembly further comprises a spring member, one end of the spring member is connected to the mounting frame, the other end of the spring member is connected to the pawl, and the spring member is used for driving the pawl to abut against the ratchet wheel.

[0012] The sewage treatment equipment according to the embodiment of the utility model still includes garbage collection device, the garbage collection device is equipped below the upper end of the harrow net chain, the garbage collection device is used for collecting the garbage falling from the upper end of the harrow net chain.

[0013] The sewage treatment equipment according to the embodiment of the utility model still includes water spraying device, the water spraying device is equipped on the shell, the water spraying device is used for spraying water downward to the upper end of the harrow net chain, so that the garbage adhered at the upper end of the harrow net chain can be washed off into the garbage collection device.

[0014] The sewage treatment equipment according to the embodiment of the utility model still includes hinge seat and hinge shaft, the hinge seat is used for being connected on the inner bottom wall of the sewage tank, the hinge shaft is parallel to left and right directions, the hinge shaft is equipped on the lower end of the shell, and the hinge shaft is rotatably connected on the hinge seat.

[0015] The sewage treatment equipment according to the embodiment of the utility model still includes first fastener and second fastener, the shell is provided with first threaded hole and second threaded hole, one of the supports is provided with a plurality of first through holes, and the first through holes are circumferentially distributed around the axis of the hinge shaft; the first fastener can be arranged in any one of the first through holes and be threadedly connected with the inner wall of the first threaded hole, so that the shell is fixed on one of the supports; the other support is provided with a plurality of second through holes, and the second through holes are circumferentially distributed around the axis of the hinge shaft; the second fastener can be arranged in any one of the second through holes and be threadedly connected with the inner wall of the second threaded hole, so that the shell is fixed on the other support.

[0016] The sewage treatment equipment according to the embodiment of the utility model, the first drive assembly includes first drive piece, transmission shaft and two first sprockets, the first drive piece is equipped on the shell, the transmission shaft is parallel to left and right directions, two first sprockets are connected in the shell, two first sprockets are rotatably arranged on the shell, two first sprockets are engaged with the harrow net chain, and two first sprockets are connected through the transmission shaft; the first drive piece is used to drive the transmission shaft to rotate, so that two first sprockets drive the harrow net chain to rotate.

[0017] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further explained in connection with the drawings and embodiments, wherein:

[0019] Figure 1 Structure diagram of the sewage treatment equipment according to the embodiment of the present application;

[0020] Figure 2 Another state diagram of the rake tooth net chain and sewage in the sewage tank in the sewage treatment equipment according to the embodiment of the present application;

[0021] Figure 3 Another state diagram of the rake tooth net chain and sewage in the sewage tank in the sewage treatment equipment according to the embodiment of the present application;

[0022] Figure 4 Structure diagram of the rake tooth grid device and the sewage channel in the sewage treatment equipment according to the embodiment of the present application;

[0023] Figure 5 Figure 4 Local enlarged view of A in the figure;

[0024] Figure 6 Structure diagram of the second driving assembly in the sewage treatment equipment according to the embodiment of the present application;

[0025] Figure 7 Structure diagram of the second driving assembly in the sewage treatment equipment according to the embodiment of the present application from another perspective;

[0026] Figure 8 Structure diagram of the internal structure of the rake tooth grid device in the sewage treatment equipment according to the embodiment of the present application;

[0027] Figure 9 Structure diagram of the transmission shaft and the first chain wheel in the sewage treatment equipment according to the embodiment of the present application;

[0028] Reference signs:

[0029] Rake tooth grid device 100; shell 110; first driving assembly 120; first driving member 121; transmission shaft 122; first chain wheel 123; rake tooth net chain 130;

[0030] Mounting frame 200; second driving assembly 210; second driving member 211; cable winding drum 212; cable 213; auxiliary wheel 214; ratchet wheel 215; pawl 216; third driving member 217;

[0031] Support 300; first through hole 310; first fastener 320;

[0032] Garbage collection device 400;

[0033] Water spraying device 500;

[0034] Sewage channel 600; sewage tank 610. DETAILED DESCRIPTION ​

[0035] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explaining the present application, and should not be understood as a limitation to the present application.

[0036] In the description of the present application, it should be understood that, in relation to the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as a limitation to the present application.

[0037] In the description of the present application, the plural means more than two. If there is a description of first, second, it is only for the purpose of distinguishing technical features, and should not be understood as indicating or implying relative importance or implying indicating the number of technical features indicated or implying indicating the sequence of technical features indicated.

[0038] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0039] The additional aspects and advantages of the present application will be partially given in the following description, partially will become apparent from the following description, or will be understood through the practice of the present application.

[0040] In the embodiment of the present application, a sewage channel is formed on the sewage channel, and the sewage channel is formed on the left wall of the sewage channel. The right wall of the sewage channel forms the right inner side wall of the sewage channel.

[0041] It should be explained that, in the embodiment of the present application, the subsequent treatment equipment usually includes a sedimentation tank and an aeration tank. When the speed of the rake grid machine is reduced, the amount of sewage flowing into the sedimentation tank and the aeration tank per unit time is reduced, which leads to the need to consume more time to make the sewage in the sedimentation tank and the aeration tank reach the specified water level, thereby reducing the sewage treatment efficiency of the sedimentation tank and the aeration tank. On the other hand, when the garbage is blocked in the rake grid machine, the blocked garbage may fall from the upper end of the rake grid machine to the sewage behind the rake grid machine, resulting in large volume of garbage flowing into the subsequent treatment equipment. Large volume of garbage is easy to cause failure of the subsequent treatment equipment, which requires the operator to shut down and clean the subsequent treatment equipment, so as to also reduce the sewage treatment efficiency of the subsequent treatment equipment.

[0042] Reference Figures 1 to 3 The sewage treatment equipment provided by the embodiment of the utility model, comprising rake tooth grid device 100, mounting bracket 200, second drive assembly 210 and two supports 300.

[0043] Two supports 300 are used for being connected on the left wall body and the right wall body of the sewage channel 600 respectively, so that the two supports 300 are arranged on the left and right sides of the sewage tank 610 on the sewage channel 600 respectively. Rake tooth grid device 100 comprises a shell 110, a first drive assembly 120 and a rake tooth net chain 130, the shell 110 is arranged obliquely, the lower end of the shell 110 is used for being hinged on the inner bottom wall of the sewage tank 610, the shell 110 is detachably connected on the two supports 300, the rake tooth net chain 130 is rotatably connected in the shell 110, the first drive assembly 120 is arranged on the shell 110, the first drive assembly 120 is used for driving the rake tooth net chain 130 to rotate, so that the rake tooth net chain 130 can fish the garbage in the sewage in the sewage tank 610. The mounting bracket 200 is used for being connected on the sewage channel 600. The second drive assembly 210 is arranged on the mounting bracket 200, the second drive assembly 210 can drive the upper end of the shell 110 to swing downward, so as to increase the contact area of the rake tooth net chain 130 and the sewage in the sewage tank 610.

[0044] Two supports 300 are respectively mounted on the left wall body and the right wall body of the sewage channel 600, so that the two supports 300 are arranged on the left and right sides of the sewage tank 610 on the sewage channel 600 respectively. Rake tooth grid device 100 comprises a shell 110, a first drive assembly 120 and a rake tooth net chain 130, the rake tooth net chain 130 is rotatably connected on the shell 110, and the lower end of the shell 110 is hinged on the inner bottom wall of the sewage tank 610, so that the lower end of the rake tooth net chain 130 can also extend into the sewage tank 610, and the rake tooth net chain 130 can face the flowing direction of the sewage in the sewage tank 610. The shell 110 is detachably connected on the two supports 300, and the two supports 300 support the whole rake tooth grid device 100. The first drive assembly 120 is connected on the shell 110, the first drive assembly 120 can drive the rake tooth net chain 130 to rotate, the rotating rake tooth net chain 130 can fish the garbage in the sewage, and the sewage can pass through the rake tooth net chain 130 and flow to the subsequent treatment equipment. The mounting bracket 200 is mounted on the sewage channel 600, specifically, the lower end of the mounting bracket 200 is connected on the left wall body and the right wall body of the sewage channel 600. The second drive assembly 210 is mounted on the mounting bracket 200, the output end of the second drive assembly 210 is connected with the upper end of the shell 110, since the lower end of the shell 110 is hinged on the inner bottom wall of the sewage tank 610, the second drive assembly 210 can drive the upper end of the shell 110 to swing, so that the upper end of the shell 110 can swing downward or upward.

[0045] It needs to be explained that, referring to Figure 2 and Figure 3 , the thick solid line in the figure is the contact area of the rake chain 130 with the sewage in the sewage tank 610, which is also called the water passing area of the rake chain 130. The arrow in the figure is the flow direction of the sewage. It is not difficult to see that when the upper end of the shell 110 swings downward and approaches the inner bottom wall of the sewage tank 610, the upper end of the rake chain 130 swings downward and approaches the inner bottom wall of the sewage tank 610, at this time the contact area of the rake chain 130 with the sewage increases, so that the rake chain 130 can contact more garbage in the sewage, thereby the rake chain 130 can pick up more garbage in unit time, improve the garbage picking effect and efficiency of the rake chain 130.

[0046] It can be understood that when the sewage in the sewage tank 610 carries a large amount of garbage, the operator can first make the shell 110 disengage from the connection with the two supports 300, and then control the second driving assembly 210 to drive the upper end of the shell 110 to swing downward. The rake chain 130 in the shell 110 can swing downward together with the shell 110, so that the upper end of the rake chain 130 can swing downward and approach the inner bottom wall of the sewage tank 610. When the upper end of the rake chain 130 swings downward and approaches the inner bottom wall of the sewage tank 610, the contact area of the rake chain 130 with the sewage increases, so that the rake chain 130 can pick up more garbage in unit time, improve the garbage picking effect and efficiency of the rake chain 130, thereby the rake chain 130 can timely pick up the garbage in the sewage, effectively avoid part of the garbage to be accumulated and blocked on the lower end of the rake chain 130, ensure the speed of the sewage passing through the rake chain 130, and ensure the sewage treatment efficiency of the subsequent treatment equipment.

[0047] After the position adjustment of the shell 110 is completed, the operator re-connects and fixes the shell 110 on the two supports 300, so that the two supports 300 can support the shell 110, that is, the two supports 300 can support the entire rake grid device 100.

[0048] As an embodiment of the utility model, the sewage treatment equipment further comprises a hinged seat and a hinge shaft, the hinged seat is used for being connected on the inner bottom wall of the sewage tank 610, the hinge shaft is parallel to the left-right direction, the hinge shaft is arranged on the lower end of the shell 110, and the hinge shaft is rotatably connected on the hinged seat. It can be understood that the hinge shaft is connected on the lower end of the shell 110, two hinged holes are formed in the hinged seat, the two ends of the hinge shaft are respectively arranged in the two hinged holes, so that the hinge shaft can rotate on the hinged seat, thereby the upper end of the shell 110 can swing around the axis of the hinge shaft. Hinge connection is a common connection mode, which will not be described further here.

[0049] Referring to Figure 4 andFigure 5 The sewage treatment device further comprises a first fastener 320 and a second fastener, the shell 110 is provided with a first threaded hole and a second threaded hole, one of the supports 300 is provided with a plurality of first through holes 310 which are arranged in a circle around the axis of the hinge shaft, the first fastener 320 can be arranged in any one of the first through holes 310 and is screwed with the inner wall of the first threaded hole, so that the shell 110 is fixed on the one support 300, the other support 300 is provided with a plurality of second through holes which are arranged in a circle around the axis of the hinge shaft, the second fastener can be arranged in any one of the second through holes and is screwed with the inner wall of the second threaded hole, so that the shell 110 is fixed on the other support 300.

[0050] It can be understood that the plurality of first through holes 310 and the plurality of second through holes are arranged one by one, the first fastener 320 can be a first bolt, and the second fastener can be a second bolt. When it is needed to change the swing angle of the shell 110 and the rake net chain 130, that is, when it is needed to change the angle between the shell 110, the rake net chain 130 and the inner bottom wall of the sewage tank 610, the operator can first unscrew the first bolt and the second bolt, and then take out the first bolt from the first threaded hole and the first through hole 310 and take out the second bolt from the second threaded hole and the second through hole. Then the second driving assembly 210 is controlled to drive the upper end of the shell 110 to swing upward or downward. After the position of the shell 110 is adjusted, the first threaded hole on the shell 110 corresponds to one of the first through holes 310 on the one support 300, and the second threaded hole on the shell 110 corresponds to one of the second through holes on the other support 300. Then the operator inserts the first bolt into the corresponding first through hole 310 and the first threaded hole, and inserts the second bolt into the corresponding second through hole and the second threaded hole. Finally, the first bolt and the second bolt are tightened, so that the nuts of the first bolt and the second bolt press against the two supports 300 respectively, so that the shell 110 is fixed on the two supports 300.

[0051] In the embodiment of the utility model, the plurality of first through holes 310 are arranged in a circle around the axis of the hinge shaft, and the plurality of second through holes are arranged in a circle around the axis of the hinge shaft, different first through holes 310 and second through holes correspond to different inclination angles of the shell 110. As an embodiment of the utility model, the one support 300 is further provided with an angle scale, the angle scale cooperates with the plurality of first through holes 310, and different first through holes 310 correspond to different inclination angles of the shell 110, so that the operator can quickly know the inclination angle of the shell 110.

[0052] As an embodiment of the utility model, the lower end of the shell 110 is further provided with a sealing piece, the position of the sealing piece on the lower end of the shell 110 is adjustable, the sealing piece is used to abut on the inner bottom wall of the sewage tank 610, so that the sealing piece can close the gap between the lower end of the shell 110 and the inner bottom wall of the sewage tank 610. It can be understood that the sealing piece can extend from the lower end of the shell 110 or retract into the shell 110, so that the sealing piece can be adjusted according to the inclination angle of the shell 110, ensuring that the sealing piece can always abut on the inner bottom wall of the sewage tank 610, ensuring that the sealing piece can always close the gap between the lower end of the shell 110 and the inner bottom wall of the sewage tank 610, effectively preventing garbage from passing through the gap between the lower end of the shell 110 and the inner bottom wall of the sewage tank 610 and flowing to the subsequent treatment equipment. As an embodiment of the utility model, the sealing piece can be a shielding plate with soft glue on the surface, and the position of the sealing piece is adjusted by the structure of the waist-shaped hole and the fastener.

[0053] Reference Figure 8 And Figure 9 The first driving assembly 120 comprises a first driving piece 121, a transmission shaft 122 and two first sprockets 123, the first driving piece 121 is arranged on the shell 110, the transmission shaft 122 is parallel to the left-right direction, the two first sprockets 123 are both arranged in the shell 110, the two first sprockets 123 are both rotatably connected to the shell 110, the two first sprockets 123 are both meshed with the harrow tooth net chain 130, and the two first sprockets 123 are connected through the transmission shaft 122. The first driving piece 121 is used to drive the transmission shaft 122 to rotate, so that the two first sprockets 123 drive the harrow tooth net chain 130 to rotate. It can be understood that the first driving piece 121 can be a first motor, the first motor drives the transmission shaft 122 to rotate, so that the two first sprockets 123 rotate, and since the two first sprockets 123 are both meshed with the harrow tooth net chain 130, the two first sprockets 123 drive the harrow tooth net chain 130 to rotate in turn. As an embodiment of the utility model, the output shaft of the first motor is in transmission connection with one end of the transmission shaft 122 through a chain wheel and chain.

[0054] As an embodiment of the utility model, the harrow tooth grid device 100 further comprises a plurality of supporting wheels, the plurality of supporting wheels are all arranged in the shell 110, the plurality of supporting wheels are all rotatably connected to the shell 110, and the plurality of supporting wheels are used to abut against the harrow tooth net chain 130. The plurality of supporting wheels are used to support and guide the harrow tooth net chain 130, ensuring that the harrow tooth net chain 130 can rotate in turn smoothly, and also ensuring that the harrow tooth net chain 130 can maintain a correct shape.

[0055] Reference Figure 1 And Figure 4The sewage treatment device further comprises a garbage collecting device 400 arranged below the upper end of the rake chain 130, and the garbage collecting device 400 is used for collecting the garbage falling from the upper end of the rake chain 130. As an embodiment of the present application, the sewage treatment device further comprises a water spraying device 500 arranged on the shell 110, and the water spraying device 500 is used for spraying water downward to the upper end of the rake chain 130, so that the garbage adhering to the upper end of the rake chain 130 can be washed off and fall into the garbage collecting device 400.

[0056] It can be understood that the garbage collecting device 400 is installed on the sewage channel 600. During the rotating process of the rake chain 130, the garbage in the sewage is continuously lifted by the rake chain 130 and transported upward. When the garbage moves to the upper end of the rake chain 130, the garbage at the upper end of the rake chain 130 falls into the garbage collecting device 400, so that the garbage collecting device 400 can collect the garbage in the sewage. In the embodiment of the present application, the garbage collecting device 400 comprises a collecting box and a chain conveyor, and the chain conveyor is arranged in the collecting box. The garbage falling from the upper end of the rake chain 130 falls onto the chain conveyor in the collecting box, and the chain conveyor can transport the garbage to a corresponding position. The chain in the chain conveyor can allow the sewage to pass through and reflow into the sewage tank 610, so as to make the garbage stay on the chain. The garbage collecting device 400 is a common device used in cooperation with the rake grid device 100, and will not be further described here.

[0057] In the embodiment of the present application, the water spraying device 500 on the shell 110 can spray water downward, so that the garbage adhering to the upper end of the rake chain 130 can be washed off and fall into the garbage collecting device 400. It can be understood that when the rake chain 130 lifts the garbage in the sewage, fibers or grease and other impurities will adhere to the rake chain 130. These impurities cause the gap between the rake teeth in the rake chain 130 or between the rake teeth and the shaft to be easily blocked, thereby affecting the garbage lifting effect of the rake chain 130. The water spraying device 500 can spray water to the part of the rake chain 130 downward, so as to wash off the impurities adhering to the rake chain 130, prevent the rake chain 130 from being blocked, and ensure the garbage lifting effect of the rake chain 130. As an embodiment of the present application, the water spraying device 500 comprises a water pump and a plurality of nozzles, and the plurality of nozzles are in communication with the water pump.

[0058] Reference Figure 1 , Figure 6 and Figure 7The second driving assembly 210 comprises a second driving member 211, a cable winding drum 212 and a cable 213. The second driving member 211 is arranged on the mounting frame 200. The cable winding drum 212 is rotatably connected to the mounting frame 200. The cable winding drum 212 is used for winding the cable 213. One end of the cable 213 is connected to the cable winding drum 212. The other end of the cable 213 is connected to the upper end of the housing 110. The output end of the second driving member 211 is in transmission connection with the cable winding drum 212. The second driving member 211 is used for driving the cable winding drum 212 to rotate, so that the cable winding drum 212 can unwind the cable 213 and the upper end of the housing 110 can swing downward.

[0059] It can be understood that the second driving member 211 can be a second motor. The output shaft of the second motor can be connected to the cable winding drum 212 through a shaft coupling or a speed reducer. One end of the cable 213 is connected to the cable winding drum 212. The other end of the cable 213 is connected to the upper end of the housing 110. When it is needed to swing the upper end of the housing 110 downward, the operator first disconnects the housing 110 from the two supports 300. Then the second motor drives the cable winding drum 212 to rotate forward, so that the cable winding drum 212 unwinds the cable 213 wound on the cable winding drum 212, and thus the upper end of the housing 110 can swing downward. After the position adjustment of the housing 110 is completed, the operator can reconnect and fix the housing 110 to the two supports 300.

[0060] When it is needed to swing the upper end of the housing 110 upward, the operator first disconnects the housing 110 from the two supports 300. Then the second motor drives the cable winding drum 212 to rotate reversely, so that the cable winding drum 212 winds more cable 213 on the cable winding drum 212, that is, the cable 213 is wound. At this time, the cable 213 pulls the upper end of the housing 110, and thus the upper end of the housing 110 can swing upward. After the position adjustment of the housing 110 is completed, the operator can reconnect and fix the housing 110 to the two supports 300.

[0061] Reference Figure 7The second driving assembly 210 further comprises an auxiliary wheel 214 rotatably connected to the mounting frame 200, and a positioning ring groove is formed on the circumferential outer wall of the auxiliary wheel 214 for the cable 213 to pass through. It can be understood that the cable 213 discharged from the cable drum 212 passes through the positioning ring groove on the auxiliary wheel 214, and the inner wall of the positioning ring groove can limit the cable 213, so that the cable 213 between the cable drum 212 and the auxiliary wheel 214 can be parallel to the front and back directions, ensuring that the cable 213 will not sway during the winding and unwinding process, and improving the stability of the shell 110 swinging. On the other hand, the auxiliary wheel 214 bears part of the force of the cable 213, reducing the load on the second motor. In the embodiment of the utility model, the upper end of the shell 110 is provided with a lifting ring, and the other end of the cable 213 is connected with the lifting ring.

[0062] Reference Figure 6 The second driving assembly 210 further comprises a ratchet wheel 215, a pawl 216 and a third driving member 217. The third driving member 217 is arranged on the mounting frame 200, the pawl 216 is rotatably connected to the mounting frame 200, the ratchet wheel 215 is connected with the cable drum 212, so that the ratchet wheel 215 can rotate synchronously with the cable drum 212, and the third driving member 217 can drive the pawl 216 to approach and abut against the ratchet wheel 215, so as to limit the cable drum 212 from unwinding the cable 213. It can be understood that the third driving member 217 can be a third motor, and the ratchet wheel 215 and the cable drum 212 are coaxial. After the position adjustment of the shell 110, i.e. the rake grid device 100, is completed, the third driving member 217 can drive the pawl 216 to rotate, so that the pawl 216 approaches and abuts against the ratchet wheel 215. At this time, under the limitation of the pawl 216, the pawl 216 cannot rotate forward, i.e. the cable drum 212 cannot rotate forward and unwind the cable 213, so as to ensure that the rake grid device 100 will not suddenly and unexpectedly swing downward, improving the safety of the sewage treatment equipment.

[0063] As an embodiment of the utility model, the second driving assembly 210 further includes a spring piece, one end of the spring piece is connected with the mounting frame 200, the other end of the spring piece is connected with the pawl 216, and the spring piece is used to drive the pawl 216 to be close to and abut against the ratchet wheel 215. It can be understood that the spring piece can be a tension spring, and under the driving force of no third motor, the tension spring can pull the pawl 216 to abut against the ratchet wheel 215, so as to prevent the ratchet wheel 215 and the winch drum 212 from accidentally rotating forward, thereby causing the rake tooth grid device 100 to accidentally swing down. It needs to be explained that the ratchet wheel 215 and the pawl 216 are a common mechanical structure, and in the embodiment of the utility model, when the pawl 216 abuts against the ratchet wheel 215, the ratchet wheel 215 can normally rotate reversely, that is, the winch drum 212 can normally wind the cable 213.

[0064] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0065] Of course, the utility model is not limited to the above-mentioned implementation, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the present application.

Claims

1. A wastewater treatment device, characterized in that, include: Two supports (300) are respectively used to connect to the left and right walls of the sewage channel (600) so that the two supports (300) are respectively located on the left and right sides of the sewage tank (610) on the sewage channel (600); A rake bar screen device (100) includes a housing (110), a first drive assembly (120), and a rake bar chain (130). The housing (110) is inclined and its lower end is hinged to the inner bottom wall of the sewage tank (610). The housing (110) is detachably connected to two supports (300). The rake bar chain (130) is rotatably connected inside the housing (110). The first drive assembly (120) is disposed on the housing (110) and is used to drive the rake bar chain (130) to rotate so that the rake bar chain (130) can scoop up garbage from the sewage in the sewage tank (610). Mounting bracket (200) for connection to the sewage ditch (600); The second drive assembly (210) is disposed on the mounting bracket (200). The second drive assembly (210) can drive the upper end of the housing (110) to swing downward to increase the contact area between the rake tooth mesh chain (130) and the sewage in the sewage tank (610).

2. The wastewater treatment equipment according to claim 1, characterized in that: The second drive assembly (210) includes a second drive member (211), a cable drum (212), and a cable (213). The second drive member (211) is mounted on the mounting frame (200). The cable drum (212) is rotatably connected to the mounting frame (200). The cable drum (212) is used for winding the cable (213). One end of the cable (213) is connected to the cable drum (212), and the other end of the cable (213) is connected to the upper end of the housing (110). The output end of the second drive member (211) is connected to the cable drum (212) for transmission. The second drive member (211) is used to drive the cable drum (212) to rotate so that the cable drum (212) can unwind the cable (213) and cause the upper end of the housing (110) to swing downward.

3. The wastewater treatment equipment according to claim 2, characterized in that: The second drive assembly (210) also includes an auxiliary wheel (214), which is rotatably connected to the mounting bracket (200). A positioning ring groove is formed on the circumferential outer wall of the auxiliary wheel (214), which is used for the cable (213) to pass through.

4. The wastewater treatment equipment according to claim 2, characterized in that: The second drive assembly (210) further includes a ratchet (215), a pawl (216), and a third drive member (217). The third drive member (217) is disposed on the mounting frame (200). The pawl (216) is rotatably connected to the mounting frame (200). The ratchet (215) is connected to the cable drum (212) so that the ratchet (215) can rotate synchronously with the cable drum (212). The third drive member (217) can drive the pawl (216) to approach and abut against the ratchet (215) to restrict the cable drum (212) from unwinding the cable (213).

5. The wastewater treatment equipment according to claim 4, characterized in that: The second drive assembly (210) also includes a spring, one end of which is connected to the mounting bracket (200) and the other end of which is connected to the pawl (216). The spring is used to drive the pawl (216) to approach and abut against the ratchet (215).

6. The wastewater treatment equipment according to claim 1, characterized in that: It also includes a garbage collection device (400), which is located below the upper end of the rake tooth mesh chain (130) and is used to collect garbage that falls from the upper end of the rake tooth mesh chain (130).

7. The wastewater treatment equipment according to claim 6, characterized in that: It also includes a water spraying device (500), which is disposed on the housing (110). The water spraying device (500) is used to spray water downward toward the upper end of the rake tooth mesh chain (130) so that the garbage attached to the upper end of the rake tooth mesh chain (130) can be washed into the garbage collection device (400).

8. The wastewater treatment equipment according to claim 1, characterized in that: It also includes a hinge seat and a hinge shaft. The hinge seat is used to connect to the inner bottom wall of the sewage tank (610). The hinge shaft is parallel to the left and right direction and is located on the lower end of the housing (110). The hinge shaft is rotatably connected to the hinge seat.

9. The wastewater treatment equipment according to claim 8, characterized in that: It also includes a first fastener (320) and a second fastener. The housing (110) has a first threaded hole and a second threaded hole. One of the supports (300) has a plurality of first through holes (310). The plurality of first through holes (310) are arranged in a circumferential array around the axis of the hinge shaft. The first fastener (320) can be inserted into any one of the first through holes (310) and threadedly connected to the inner wall of the first threaded hole, so that the housing (110) is fixed on one of the supports (300). The other support (300) has a plurality of second through holes. The plurality of second through holes are arranged in a circumferential array around the axis of the hinge shaft. The second fastener can be inserted into any one of the second through holes and threadedly connected to the inner wall of the second threaded hole, so that the housing (110) is fixed on the other support (300).

10. The wastewater treatment equipment according to claim 1, characterized in that: The first drive assembly (120) includes a first drive member (121), a drive shaft (122), and two first sprockets (123). The first drive member (121) is disposed on the housing (110). The drive shaft (122) is parallel to the left-right direction. The two first sprockets (123) are both connected inside the housing (110) and are rotatably disposed on the housing (110). The two first sprockets (123) are both engaged with the rake tooth mesh chain (130). The two first sprockets (123) are connected through the drive shaft (122). The first drive member (121) is used to drive the drive shaft (122) to rotate so that the two first sprockets (123) drive the rake tooth mesh chain (130) to rotate.

Images