An automatic mud throwing device

Abstract

The application discloses an automatic mud throwing device and belongs to the technical field of sewage treatment devices. The automatic mud throwing device comprises a biochemical tank and a sewage pipe arranged at one end of the biochemical tank. Two sludge tanks for containing sludge are arranged at one end of the biochemical tank close to the sewage pipe. Connecting columns are arranged at both ends of the sludge tanks, and the sludge tanks and the connecting columns are elastically matched. The two connecting columns are rotated to make the originally arranged connecting column rotate to the lower side of the cross beam and be connected with the cross beam. When the cross beam moves again, the sludge tank loaded with sludge at the lower side can be moved along the biochemical tank through the cross beam, so that the sludge in the sludge tank is discharged into the biochemical tank. When one of the sludge tanks discharges sludge into the biochemical tank, the other sludge tank is in a state of loading sludge, so that the whole operation is more coherent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment devices, in particular to an automatic mud feeding device. BACKGROUND

[0002] At present, the operator needs to add sludge in the sewage treatment system when the biochemical tank is used for the first time or after a period of use, the purpose of which is to put the bacteria in the sludge into the biochemical tank, and the existing adding method usually adopts manual carrying. Based on the fact that the biochemical tank has a certain height, the difficulty of sludge adding for the operator is increased, thereby reducing the work efficiency of the operator.

[0003] A fixed sludge feeding device is disclosed in Chinese patent CN216837312U. By setting a sludge pump, a first hollow block, a driving motor and a threaded rod, based on the operation of the sludge pump, the sludge inside the sludge pool will be extracted through the water suction pipe, so that the sludge is input into the inside of the first hollow block through the hose and discharged through the circular opening at the bottom of the first hollow block. At the same time, based on the operation of the driving motor, the threaded rod will rotate, so that the installation frame can move left and right along the outer surface of the circular rod through the cooperation between the threaded rod and the installation frame.

[0004] The above-mentioned device adds sludge in the biochemical tank by setting the first hollow block. However, due to the large area of the biochemical tank, the length of the hose between the first hollow block and the sludge pump will increase accordingly, which is not conducive to the overall operation. In addition, when there is sludge remaining in the hose, it is also difficult to handle. In summary, the above-mentioned device still has room for improvement.

[0005] Therefore, it is necessary to provide an automatic mud feeding device to solve the above technical problems. SUMMARY

[0006] The present application aims to provide an automatic mud feeding device to solve the problem that the existing device adds sludge in the biochemical tank by setting the first hollow block, but due to the large area of the biochemical tank, the length of the hose between the first hollow block and the sludge pump will increase accordingly, which is not conducive to the overall operation.

[0007] Based on the above idea, the present application provides the following technical scheme: an automatic mud feeding device, comprising a biochemical tank and a sewage pipe arranged at one end of the biochemical tank, two sludge tanks for containing sludge are arranged at one end of the biochemical tank close to the sewage pipe, connecting columns are arranged at both ends of the sludge tanks, the sludge tanks and the connecting columns are elastically matched, the connecting columns and the sludge tanks are connected through limiting assemblies, a cross beam matched with the connecting columns is slidably installed at the top end of the biochemical tank, the connecting columns are semi-cylindrical, the connecting columns and the cross beam are mutually clamped, and the connecting columns can rotate relative to the cross beam.

[0008] When the cross beam drives one of the sludge boxes to move to the top of the other sludge box, the connecting columns at the ends of the two sludge boxes can be in close contact and in a cylindrical structure, the rotating of the two connecting columns in close contact is driven, so that the connecting column matched with the lower sludge box can be rotated to the side away from the sewage pipe, so that the cross beam can drive the lower sludge box to move away from the sewage pipe during the movement.

[0009] As a further scheme of the present application: the bottom surface of the sludge box is provided with a through groove, and an elastic sealing plate for sealing the through groove is arranged at the inner bottom end of the sludge box, and a strip-shaped sludge guide groove is formed in the sealing plate.

[0010] As a further scheme of the present application: the limiting assembly comprises a sliding bar in sliding cooperation with the connecting column, the sliding bar is in elastic cooperation with the connecting column and can move in the vertical direction relative to the connecting column, limiting blocks are elastically arranged at both ends of the sliding bar, and two limiting grooves matched with the limiting blocks are formed in the end surface of the sludge box.

[0011] As a further scheme of the present application: a notch is formed in one side surface of the sliding bar, a limiting column matched with the notch is elastically arranged on the connecting column, an electromagnet is fixedly arranged in the sliding bar, pull plates are arranged at both ends of the electromagnet, the pull plates are made of iron, a pull rope is fixedly arranged between the pull plate and the limiting block, and the electromagnet can be in an electrified state when the two connecting columns are in close contact.

[0012] As a further scheme of the present application: a semicircular upper connector is fixedly arranged at the top end surface of the connecting column, an insertion hole is formed in the top end surface of the upper connector, sliding grooves matched with the upper connector are formed in the bottom surface of the cross beam and close to both ends, an insertion block matched with the insertion hole is elastically arranged on the top wall of the sliding groove inner cavity, the outer side circumferential surface of the insertion block close to the bottom end is arranged as a conical surface, and the cross sections of the upper connector and the sliding groove are both T-shaped.

[0013] As a further scheme of the present application: a sliding seat is arranged below the connecting column, one sliding seat close to the sewage pipe is fixedly connected with the biochemical tank, a positioning rod is fixedly arranged on the sliding seat fixed with the biochemical tank, the positioning rod penetrates through the other sliding seat and is in sliding cooperation with the other sliding seat, a lower connector is fixedly arranged at the bottom end surface of the connecting column, the lower connector is in rotational cooperation with the sliding seat, a convex block is elastically arranged on the sliding seat, a recess matched with the convex block is formed in the bottom end surface of the lower connector, and the outer side of one end of the convex block close to the lower connector is arranged as a conical surface.

[0014] As a further scheme of the present application: the connecting column is provided with a through mounting groove in the height direction, the sliding bar is slidingly arranged in the mounting groove, a vertical rod is fixedly arranged in the mounting groove, the vertical rod penetrates through the sliding bar and slidingly cooperates with the sliding bar, and a limiting spring is arranged outside the vertical rod and between the bottom end surface of the sliding bar and the inner bottom surface of the mounting groove.

[0015] As a further scheme of the present application: the support plate is fixedly arranged at one end of the biochemical tank close to the sewage pipe, and when the sludge box at one end of the biochemical tank moves downward to the limit position, the sludge box can fall on the support plate.

[0016] As a further scheme of the present application: the horizontal rods are fixedly arranged at both sides of the sludge box, the circular holes are arranged on the sealing plate and slidingly cooperate with the horizontal rods, and the second spring is fixedly arranged between the inner end surface of the circular hole and the horizontal rod.

[0017] As a further scheme of the present application: the sink groove is arranged on the top end surface of the sliding seat and cooperates with the bottom end of the connecting column, the annular groove is arranged on the inner wall of the sink groove, and the lower connector is slidingly arranged in the annular groove, and the cross sections of the annular groove and the lower connector are both T-shaped.

[0018] Compared with the prior art, the present application has the following beneficial effects: the connecting column at the end of the sludge box is arranged in a semicylindrical shape, when the two sludge boxes are aligned in the vertical direction, the two connecting columns can be attached and present a cylindrical structure, at this time, the two connecting columns can be rotated to connect with the cross beam, when the cross beam moves again, the sludge box loaded with sludge can be moved along the biochemical tank through the cross beam, so that the sludge in the sludge box can be discharged into the biochemical tank, when one of the sludge boxes discharges sludge into the biochemical tank, the other sludge box is in a state of loading sludge, so that the whole operation is more coherent, and the soft pipe is not arranged between the sludge box and the external pump body, so that the whole operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described below in combination with the drawings and embodiments.

[0020] Figure 1 is a schematic diagram of the overall structure of the present application;

[0021] Figure 2 is a schematic diagram of the cross beam and the connecting column structure of the present application;

[0022] Figure 3 is a schematic diagram of the two sludge boxes staggered in the vertical direction of the present application;

[0023] Figure 4 is a schematic diagram of the sliding seat and the positioning rod structure of the present application;

[0024] Figure 5 This is a front view of the two sludge tanks of the present invention;

[0025] Figure 6 This is a top view of the two sludge tanks of the present invention;

[0026] Figure 7 This is the present invention. Figure 1 A magnified structural diagram at point A;

[0027] Figure 8 This is a schematic diagram of the plug-in block structure of the present invention;

[0028] Figure 9 This is the present invention. Figure 4 A magnified structural diagram at point B;

[0029] Figure 10 This is a schematic diagram of the protrusion structure of the present invention;

[0030] Figure 11 This is a schematic diagram of the electromagnet and pull plate structure of the present invention;

[0031] Figure 12 This is a schematic diagram of the crossbar structure of the present invention;

[0032] Figure 13 This is a schematic diagram of the limiting post structure of the present invention.

[0033] In the diagram: 1. Biological tank; 2. Rack; 3. Sewage pipe; 4. Connecting column; 401. Upper connector; 4011. Insertion hole; 402. Lower connector; 5. Sludge tank; 501. Through groove; 502. Limiting groove; 6. Crossbeam; 601. Sliding block; 7. Positioning rod; 8. Slide seat; 9. Sealing plate; 901. Sludge guide groove; 10. Main gear; 11. Half gear; 12. Drive gear; 13. Sliding bar; 1301. Groove; 14. Limiting block; 15. Insertion block; 16. Detection unit; 17. Limiting column; 18. Protrusion; 19. Electromagnet; 20. Pull plate; 21. Pull rope; 22. Crossbar; 23. Support plate. Detailed Implementation

[0034] like Figures 1-5 As shown, an automatic sludge feeding device includes a biological treatment tank 1 and a sewage pipe 3 disposed at one end of the biological treatment tank 1. The sewage pipe 3 passes through the biological treatment tank 1 and is fixedly connected to it. In actual use, the sewage pipe 3 is connected to an external sludge pump, so that the sludge in the sludge tank can be introduced into the biological treatment tank 1 through the sewage pipe 3.

[0035] In order to evenly add sludge into the biological treatment tank 1, this scheme sets two sludge boxes 5 for holding sludge at one end of the biological treatment tank 1 near the sewage pipe 3. The top surface of the sludge box 5 is open, and the bottom surface of the sludge box 5 is provided with a through groove 501. In actual use, a sealing plate 9 is elastically installed at the bottom inside the sludge box 5 to seal the through groove 501. The sealing plate 9 is provided with a strip-shaped mud guide groove 901. When the mud guide groove 901 is aligned with the through groove 501, the sludge in the sludge box 5 can be guided into the biological treatment tank 1.

[0036] Connecting columns 4 are provided at both ends of the sludge tank 5. The sludge tank 5 can move vertically relative to the connecting columns 4, and the sludge tank 5 and the connecting columns 4 are elastically engaged. The connecting columns 4 and the sludge tank 5 are connected by a limiting component. A crossbeam 6 that engages with the connecting columns 4 is slidably installed at the top of the biochemical tank 1. Specifically, the connecting columns 4 are semi-cylindrical. The connecting columns 4 and the crossbeam 6 are interlocked, and the connecting columns 4 can rotate relative to the crossbeam 6.

[0037] In actual use, when the crossbeam 6 moves one of the sludge boxes 5 to the top of the sludge box 5 near the sewage pipe 3 in the biological treatment tank 1 and aligns it with the top of the sludge box 5, the connecting columns 4 at the ends of the two sludge boxes 5 can fit together to form a cylindrical structure. At this time, the two connecting columns 4 that fit together are rotated, so that the connecting column 4 that cooperates with the sludge box 5 below can rotate to the side away from the sewage pipe 3. As the crossbeam 6 moves away from the sewage pipe 3, it can move the sludge box 5 below. Through this structure, the sludge in the sludge box 5 can be continuously put into the biological treatment tank 1, so that the overall operation is more consistent.

[0038] like Figures 2-11 As shown, the aforementioned limiting component includes a slide bar 13 that slides in cooperation with the connecting post 4. Specifically, the slide bar 13 is elastically engaged with the connecting post 4, and the slide bar 13 can move vertically relative to the connecting post 4. Limiting blocks 14 are elastically installed at both ends of the slide bar 13, and two limiting grooves 502 that cooperate with the limiting blocks 14 are provided on the end face of the sludge tank 5. When the limiting blocks 14 are in the popped-out state and inserted into the limiting grooves 502, the sludge tank 5 is connected to the connecting post 4.

[0039] Furthermore, referring to Figures 9-11 As shown, a slot 1301 is provided on one side of the slide bar 13, and a limiting post 17 that cooperates with the slot 1301 is elastically installed on the connecting post 4. When the two sludge boxes 5 are aligned vertically, the two connecting posts 4 can fit together. During this process, the limiting posts 17 on the two connecting posts 4 can press against each other, so that one end of the limiting post 17 is inserted into the slot 1301, thereby locking the slide bar 13 and the connecting post 4.

[0040] An electromagnet 19 is fixedly embedded in the slide bar 13, and a pull plate 20 is provided at both ends of the electromagnet 19. The pull plate 20 is made of iron and slides with the slide bar 13. A pull rope 21 is fixed between the pull plate 20 and the limiting block 14. The pull rope 21 passes through the slide bar 13 and slides with it. When the two connecting posts 4 are in contact with each other, the electromagnet 19 can be energized. The attraction of the electromagnet 19 to the pull plate 20 can pull the pull rope 21, so that one end of the limiting block 14 moves out of the limiting groove 502, and the slide bar 13 is disconnected from the sludge box 5. At this time, the connecting post 4 can rotate relative to the sludge box 5.

[0041] To achieve the connection between the connecting column 4 and the crossbeam 6, this design includes a semi-annular upper connector 401 fixedly installed at the top end face of the connecting column 4. The upper connector 401 has an insertion hole 4011 at its top end face. The bottom surface of the crossbeam 6, near both ends, has sliding grooves that slidably engage with the upper connector 401. These grooves are also semi-annular, and the top wall of the inner cavity of the groove is elastically fitted with a plug-in block 15 that mates with the insertion hole 4011. The plug-in block 15 is cylindrical in shape. (Refer to...) Figure 8 As shown, the outer peripheral surface of the plug block 15 is set as a conical surface near the bottom end, and the cross-section of the upper connector 401 and the slide groove is T-shaped. The two ends of the slide groove extend to the side of the crossbeam 6.

[0042] A sliding block 8 is provided below the connecting column 4. One sliding block 8 near the sewage pipe 3 is fixedly connected to the biological treatment tank 1, as shown in the figure. Figures 3-4 , Figure 9 As shown, a positioning rod 7 is fixedly installed on the slide 8 that is fixed to the biological tank 1. The positioning rod 7 passes through another slide 8 and slides with it, so that when the crossbeam 6 moves the sludge box 5 close to the sewage pipe 3, the positioning rod 7 can pass through the moving slide 8.

[0043] Furthermore, a lower connector 402 is fixedly installed at the bottom end face of the connecting column 4. The lower connector 402 is rotatably engaged with the slide 8. A protrusion 18 is elastically installed on the slide 8, and a groove that mates with the protrusion 18 is formed on the bottom end face of the lower connector 402. (Refer to...) Figure 10 As shown, the protrusion 18 is also cylindrical in shape, and the outer side of the end of the protrusion 18 near the lower connector 402 is set as a conical surface.

[0044] In actual use, the movement of the crossbeam 6 can move the sludge tank 5 within the biological treatment tank 1, thereby discharging the sludge from the sludge tank 5 into the biological treatment tank 1. As the amount of sludge in the sludge tank 5 gradually decreases, the overall weight of the sludge tank 5 will also decrease accordingly. At this time, the sludge tank 5 can gradually bounce upward relative to the connecting column 4. When the sludge tank 5 completes one stroke and gradually returns to the drain pipe 3, the sludge in the sludge tank 5 is completely discharged, and the sludge tank 5 has moved to its extreme position relative to the connecting column 4. At the same time, one sludge tank 5 located at the end of the biological treatment tank 1 is in a state of being loaded with sludge. During this process, the weight of the sludge tank 5 gradually increases, allowing it to gradually move downwards. When the sludge tank 5 at the end of the biological tank 1 moves to its limit position, the two sludge tanks 5 are vertically offset, allowing the crossbeam 6 to move the sludge tank 5 below it to the top of the other sludge tank 5. When the two sludge tanks 5 are vertically aligned, the connecting posts 4 at the ends of the two sludge tanks 5 can fit together. During this process, the slide 8 below the crossbeam 6 can be inserted into the positioning rod 7. As the two connecting posts 4 gradually approach each other, the limiting posts 17 on the connecting posts 4 are squeezed and move closer to each other. In practical applications, when the sludge tank 5 at the end of the biochemical tank 1 moves downward to its limit position, the slide bar 13 at the end of the sludge tank 5 can align with the limiting post 17 on the connecting post 4. Therefore, when the limiting post 17 is squeezed, one end of the limiting post 17 can be inserted into the slot 1301 on the slide bar 13, so that the slide bar 13 and the connecting post 4 are engaged. At the same time, when the two connecting posts 4 are close together, the electromagnet 19 on the slide bar 13 can be energized, and the attraction of the electromagnet 19 to the pull plate 20 can tighten the pull rope 21, so that the limiting block 1... 4. One end moves out of the limiting groove 502, so that the slider 13 and the sludge box 5 are disconnected. At this point, the slider 13 and the connecting column 4 are locked together and disengaged from the sludge box 5. In actual use, a support plate 23 can be fixedly installed inside the biological tank 1 at one end near the sewage pipe 3. When the sludge box 5 at one end of the biological tank 1 moves down to the limit position, it can fall onto the support plate 23. The support plate 23 can stably support the sludge box 5. Therefore, when the upper sludge box 5 is disengaged from the slider 13, the upper sludge box 5 can stably fall onto the lower sludge box 5.

[0045] When the two sludge tanks 5 are aligned vertically, the two connecting columns 4 are in a cylindrical shape and can rotate. Since the bottom of the outer side of the plug block 15 is a conical surface, when the pressure between the plug block 15 and the plug hole 4011 increases, the plug block 15 can be pushed out from the plug hole 4011. After the two connecting columns 4 rotate 180°, the connecting column 4 originally placed at the end of the biological tank 1 rotates to the side away from the sewage pipe 3 and connects with the crossbeam 6. The connecting column 4 originally matched with the crossbeam 6 rotates to the side closer to the sewage pipe 3. After the connecting column 4 rotates 180°, the plug block 15 on the crossbeam 6 can be inserted into the plug hole 4011 at the upper connector 401, and the protrusion 18 on the slide 8 can be inserted into the groove, so that the connecting column 4 can be stably placed between the crossbeam 6 and the slide 8 after rotating 180°.

[0046] Furthermore, as the crossbeam 6 moves away from the drain pipe 3, the two connecting posts 4 gradually move away from each other. During this process, the electromagnet 19 is de-energized, allowing the limiting block 14 to pop out again. This allows the slider 13 below the crossbeam 6 to align with another limiting groove 502 on the lower sludge tank 5 as the connecting post 4 rotates. When the limiting block 14 pops out, the connecting post 4 below the crossbeam 6 can connect with the lower sludge tank 5. As the two connecting posts 4 gradually separate, the limiting post 17 gradually resets, allowing the slider 13 to connect with the connecting post 5. After the columns 4 are disengaged, when the crossbeam 6 moves away from the sewage pipe 3, it can drive the sludge box 5 below to move along the biological tank 1 away from the sewage pipe 3. Similarly, as the crossbeam 6 drives the sludge box 5 to move, the sludge in the sludge box 5 will be gradually discharged, so that the sludge box 5 can bounce upward relative to the connecting column 4. The sludge box 5 located at the sewage pipe 3 can move downward during the sludge loading process, so that the two sludge boxes 5 can be staggered again in the vertical direction, which is conducive to the next exchange of the positions of the two sludge boxes 5.

[0047] In practical applications, when the crossbeam 6 moves the sludge box 5 to the sewage pipe 3, the sealing plate 9 on the sludge box 5 will come into contact with the inner end face of the biological tank 1, thereby moving the sealing plate 9 relative to the sludge box 5, so that the sludge guide channel 901 and the through channel 501 are misaligned, so that sludge can be loaded through the sludge box 5.

[0048] In summary, this device sets the connecting column 4 at the end of the sludge tank 5 to a semi-cylindrical shape. When the two sludge tanks 5 are aligned vertically, the two connecting columns 4 can be joined together to form a cylindrical structure. At this time, the two connected columns 4 can be rotated, so that the connecting column 4 originally placed on the inner side rotates to the bottom of the crossbeam 6 and connects with the crossbeam 6. When the crossbeam 6 moves again, the crossbeam 6 can drive the sludge tank 5, which is below and loaded with sludge, to move along the biological treatment tank 1, thereby exporting the sludge in the sludge tank 5 into the biological treatment tank 1. While one sludge tank 5 is exporting sludge into the biological treatment tank 1, the other sludge tank 5 is in the state of loading sludge, thus making the overall operation more continuous.

[0049] like Figures 1-9 As shown in Figures 12-13, a through mounting groove is provided on the connecting column 4 along its height direction, and the aforementioned slide bar 13 is slidably disposed in the mounting groove. A vertical rod is fixedly disposed in the mounting groove, the vertical rod passes through the slide bar 13 and slides with it, and a limiting spring is sleeved on the outside of the vertical rod. The limiting spring is located between the bottom end face of the slide bar 13 and the bottom surface inside the mounting groove. This structure enables elastic cooperation between the slide bar 13 and the connecting column 4. Specifically, when the sludge box 5 below the crossbeam 6 gradually discharges sludge, the limiting spring can drive the sludge box 5 to move upward. During the process of loading sludge into the sludge box 5 at the sewage pipe 3, the sludge box 5 drives the slide bar 13 to compress the limiting spring.

[0050] To move the crossbeam 6, this design includes fixed sliders 601 at both ends of the crossbeam 6. The sliders 601 are slidably mounted on the top of the biochemical tank 1, and a motor is fixedly installed on the sliders 601. The output end of the motor is connected to a drive gear 12. A rack 2 that meshes with the drive gear 12 is fixedly installed on the biochemical tank 1. With this structure, the crossbeam 6 can move in the forward and reverse directions when the motor rotates in the forward and reverse directions. In actual use, limit switches can be installed on both sides of the sliders 601, and positioning blocks that cooperate with the limit switches are set at both ends of the biochemical tank 1. Specifically, a time relay can be connected between the limit switch and the motor. This structure allows the motor to be controlled. Of course, the motor can also be controlled by programming, so that the motor can drive the crossbeam 6 to move back and forth.

[0051] In order to drive the connecting column 4 to rotate, a semi-cylindrical half gear 11 can be fixedly installed at the bottom outer side of the connecting column 4. A main gear 10 that meshes with the half gear 11 is installed in the biochemical tank 1. A drive motor for driving the main gear 10 to rotate is installed in the biochemical tank 1. When the two connecting columns 4 are in contact with each other, the two half gears 11 can form a complete gear structure. At this time, the connecting column 4 can be driven to rotate through the meshing of the main gear 10 and the half gear 11.

[0052] The top end face of the slide block 8 is provided with a recessed groove that matches the bottom end of the connecting column 4. An annular groove is provided on the inner wall of the recessed groove. The lower connector 402 is slidably disposed in the annular groove. Both the annular groove and the lower connector 402 have T-shaped cross-sections. Circular holes are provided on the top wall of the inner cavity of the slide block and the bottom surface of the recessed groove. Springs are fixedly disposed between the inner end face of the circular hole and the protrusion 18, and between the inner end face of the circular hole and the insertion block 15.

[0053] The slide bar 13 is provided with a storage groove for installing the pull plate 20 and the electromagnet 19. The electromagnet 19 is fixedly installed in the storage groove, while the pull plate 20 is slidably installed in the storage groove. The end of the slide bar 13 is provided with a rectangular groove that slides with the limiting block 14. A first spring is fixedly installed between the inner end face of the rectangular groove and the limiting block 14.

[0054] Both sides of the sludge tank 5 are fixedly provided with crossbars 22, and the sealing plate 9 has a circular hole that slides with the crossbars 22. A second spring is fixedly provided between the inner end face of the circular hole and the crossbar 22. The sealing plate 9 passes through the sludge tank 5 and slides with it. Of course, in actual use, a valve can also be installed at the bottom of the sludge tank 5, and the operator can control the opening of the valve to discharge the sludge in the sludge tank 5.

[0055] The connecting column 4 has a cross groove, and the two ends of the cross groove extend to the outer side of the connecting column 4 and the inner wall of the mounting groove, respectively. The limiting column 17 is fixedly provided with a guide block that slides with the cross groove. A second spring is fixedly provided between the guide block and the inner end face of the cross groove, so as to realize the elastic cooperation between the limiting column 17 and the connecting column 4. In actual use, a positioning column can also be fixedly installed on the bottom surface inside the mounting groove, so that when the sludge box 5 moves downward to the limit position, it can contact the positioning column.

[0056] In actual use, a detection unit 16 is fixedly installed on the side of the connecting column 4 where the limit column 17 is installed. The detection unit 16 can be a pressure sensor or a switch, etc. The detection unit 16 and the electromagnet 19 can be connected by signal connection or electrical connection. When the two connecting columns 4 are in contact, the detection unit 16 can detect this signal and control the electromagnet 19 to make it energized.

Claims

1. An automatic sludge feeding device, comprising a biological treatment tank and a sewage pipe disposed at one end of the biological treatment tank, wherein two sludge tanks for holding sludge are disposed at the end of the biological treatment tank near the sewage pipe, and connecting columns are disposed at both ends of the sludge tanks, wherein the sludge tanks and the connecting columns are elastically fitted together, characterized in that: The connecting column is connected to the sludge tank by a limiting component. A crossbeam that cooperates with the connecting column is slidably installed at the top of the biochemical tank. The connecting column is semi-cylindrical. The connecting column and the crossbeam are interlocked and the connecting column can rotate relative to the crossbeam. When the crossbeam moves one of the sludge tanks to the top of the other sludge tank, the connecting columns at the ends of the two sludge tanks can fit together to form a cylindrical structure. When the two connecting columns are rotated so that the connecting column that cooperates with the sludge tank below rotates to the side away from the sewage pipe, the crossbeam can move the sludge tank below away from the sewage pipe. The limiting component includes a slide bar that slides with the connecting column. The slide bar is elastically engaged with the connecting column, and the slide bar can move vertically relative to the connecting column. Limiting blocks are elastically installed at both ends of the slide bar, and two limiting grooves that cooperate with the limiting blocks are opened on the end face of the sludge box. A slot is provided on one side of the slide bar, and a limiting post that matches the slot is elastically installed on the connecting post. An electromagnet is fixedly embedded in the slide bar, and a pull plate is provided at both ends of the electromagnet. The pull plate is made of iron, and a pull rope is fixedly provided between the pull plate and the limiting block. When the two connecting posts are in contact with each other, the electromagnet can be energized. A semi-annular upper connector is fixedly installed at the top end face of the connecting column. An insertion hole is opened at the top end face of the upper connector. A sliding groove is opened on the bottom surface of the crossbeam near both ends to slide with the upper connector. An insertion block that mates with the insertion hole is elastically installed on the top wall of the inner cavity of the sliding groove. The outer circumference of the insertion block near the bottom end is set as a conical surface. The cross-section of the upper connector and the sliding groove is T-shaped. A sliding block is provided below the connecting column. One sliding block near the sewage pipe is fixedly connected to the biological treatment tank. A positioning rod is fixedly provided on the sliding block fixed to the biological treatment tank. The positioning rod passes through the other sliding block and slides with it. A lower connector is fixedly provided at the bottom end face of the connecting column. The lower connector rotates with the sliding block. A protrusion is elastically installed on the sliding block. A groove that matches the protrusion is opened on the bottom end face of the lower connector. The outer side of the protrusion near the lower connector is set as a conical surface. The connecting column has a through mounting groove along its height direction. The slide bar is slidably disposed in the mounting groove. A vertical rod is fixedly disposed in the mounting groove. The vertical rod passes through the slide bar and slides with it. A limiting spring is sleeved on the outside of the vertical rod. The limiting spring is located between the bottom end face of the slide bar and the bottom surface inside the mounting groove.

2. The automatic mud-feeding device according to claim 1, characterized in that: The bottom surface of the sludge tank is provided with a through groove, and a sealing plate for sealing the through groove is elastically installed at the bottom of the inside of the sludge tank. The sealing plate is provided with a strip-shaped mud guide groove.

3. The automatic mud-feeding device according to claim 1, characterized in that: A support plate is fixedly installed inside the biochemical tank at one end near the sewage pipe. When the sludge box at one end of the biochemical tank moves downward to its limit position, it can fall onto the support plate.

4. An automatic mud-feeding device according to claim 2, characterized in that: A crossbar is fixedly installed on both sides inside the sludge tank. A circular hole is opened on the sealing plate to slide with the crossbar. A second spring is fixedly installed between the inner end face of the circular hole and the crossbar.

5. An automatic mud-feeding device according to claim 2, characterized in that: The top end face of the slide block is provided with a recessed groove that matches the bottom end of the connecting column. An annular groove is provided on the inner wall of the recessed groove. The lower connector is slidably disposed in the annular groove, and the cross-sections of both the annular groove and the lower connector are T-shaped.

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