Multi-stage linkage sludge extrusion device

Abstract

This invention discloses a multi-stage linkage sludge extrusion device, comprising several first extrusion mechanisms and second extrusion mechanisms. Each first extrusion mechanism includes a first extrusion head and a first driving device connected to each other. The first driving device drives the first extrusion head forward to extrude sludge or to retract and reset. Each second extrusion mechanism includes a second extrusion head and a second driving device connected to each other. The second extrusion head is formed by assembling several first extrusion heads, and the second driving device drives the second extrusion head forward to extrude sludge or to retract and reset. In this multi-stage linkage sludge extrusion device, the second extrusion head of the second extrusion mechanism is formed by assembling the first extrusion heads of the first extrusion mechanisms. Therefore, a single extrusion head structure can achieve both overall extrusion and partial zone extrusion by one or several first extrusion heads, resulting in simple operation, labor saving, and good processing effect.

Description

Technical Field

[0001] This invention relates to an impurity separation device for viscous sludge materials, and more particularly to a multi-stage linkage sludge extrusion device. Background Technology

[0002] During urban construction, a large amount of foundation work needs to be excavated, such as building foundations and river dredging. The excavated soil needs to be treated, but these treatment methods have high requirements for the content of impurities (especially stones) in the soil. The size and weight ratio of stones must be controlled within a certain range. Therefore, the impurities in these sticky soils must be separated before they can be further utilized. In some areas, the excavated soil has less impurities and is relatively easy to treat. However, in the southern coastal areas, the excavated soil has a higher content of organic matter and water, which results in high viscosity and a certain degree of fluidity. Moreover, the soil contains more stones and other impurities, making it relatively difficult to treat.

[0003] The patent with publication number CN 214363730 U provides a silt removal device for river restoration, but it actually breaks up small stones and then squeezes and filters them to remove water from the sludge. It does not effectively remove impurities from sticky sludge.

[0004] Most existing equipment can only achieve mud-water separation by compressing the sludge as a whole, but cannot achieve effective mud-stone separation. This is because existing compression devices cannot effectively identify different impurities, thus failing to achieve efficient mud-stone separation. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multi-stage linkage sludge extrusion device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multi-stage linkage sludge extrusion device, comprising a plurality of first extrusion mechanisms and second extrusion mechanisms;

[0007] The first extrusion mechanism includes a first extrusion head and a first driving device connected to each other. The first driving device is used to drive the first extrusion head forward to extrude sludge or to retract and reset it.

[0008] The second extrusion mechanism includes a second extrusion head and a second driving device connected to each other. The second extrusion head is composed of several first extrusion heads. The second driving device drives the second extrusion head to move forward to extrude sludge or to move backward to reset.

[0009] In specific implementations, the first extrusion mechanism can be uniformly arranged in an array. Specifically, it can be arranged in 2 rows and 2 columns for a total of 4 groups, 3 rows and 3 columns for a total of 9 groups, 4 rows and 4 columns for a total of 16 groups, 5 rows and 5 columns for a total of 25 groups, etc. It can also be arranged in 2 rows and 3 columns for a total of 6 groups, 3 rows and 2 columns for a total of 6 groups, 3 rows and 4 columns for a total of 12 groups, 4 rows and 3 columns for a total of 12 groups, 3 rows and 5 columns for a total of 15 groups, 5 rows and 3 columns for a total of 15 groups, etc., depending on the specific shape of the sludge bin.

[0010] As a further description of the above technical solution: the first driving device and the second driving device are hydraulic cylinders, pneumatic cylinders or electric cylinders.

[0011] As a further description of the above technical solution: the first driving device is a hydraulic cylinder, and several first driving devices are connected by pipelines and controlled by a set of hydraulic systems to enable the several first driving devices to operate in conjunction.

[0012] As a further description of the above technical solution: the second extrusion mechanism also includes a first extrusion fixed beam and an extrusion movable beam. The first extrusion fixed beam is fixedly mounted on the base. The second extrusion head is located on the side of the extrusion movable beam away from the first extrusion fixed beam. One end of the second driving device is fixed on the first extrusion fixed beam, and the other end is connected to the extrusion movable beam, for driving the extrusion movable beam to move the second extrusion head back and forth.

[0013] As a further description of the above technical solution: the first driving device passes through and is fixed on the extrusion movable beam, so that the driving end of the first driving device is connected to the first extrusion head.

[0014] As a further description of the above technical solution: the second extrusion mechanism also includes a guide structure, one end of which is fixedly mounted on the first extrusion fixing beam to provide guidance for the back-and-forth movement of the second extrusion head.

[0015] In specific implementation schemes, the guide structure can be different guide methods, such as column guide, dovetail groove guide, slider guide, etc. Preferably, the guide structure is a column guide method, that is, in this application, the guide column is used in conjunction with the guide hole on the extrusion movable beam for guidance.

[0016] As a further description of the above technical solution: the guide structure is a guide column, and the second extrusion mechanism further includes a second extrusion fixing beam, which is fixedly mounted on the base and located on the side of the second extrusion head away from the extrusion movable beam; one end of the guide column is fixed to the first extrusion fixing beam, and the other end passes through the extrusion movable beam and is fixed to the second extrusion fixing beam; preferably, four guide columns are provided.

[0017] As a further description of the above technical solution: the first extrusion head includes an extrusion section and a connecting section, one end of the connecting section is fixedly connected to the extrusion section, and the other end is fixedly connected to the first driving device.

[0018] As a further description of the above technical solution: the first extrusion mechanism is an extrusion mechanism with a sealing structure, and the first extrusion mechanism further includes a guide sealing component one, an extrusion head mounting seat and a guide sealing component two; the guide sealing component one includes a first sealing component and a first guide sleeve that cooperate with each other, and the guide sealing component two includes a second sealing component and a second guide sleeve that cooperate with each other;

[0019] One end of the extrusion head mounting seat is fixed on the plane away from the first extrusion fixed beam of the extrusion movable beam; the piston rod of the first drive device passes through the extrusion movable beam, the extrusion head mounting seat, the first guide sleeve and the first sealing assembly in sequence and is connected to the connecting section; the connecting section passes through the second guide sleeve and the second sealing assembly in sequence and is connected to the connecting section.

[0020] As a further description of the above technical solution: the first extrusion mechanism is an extrusion mechanism without a sealing structure, and the first extrusion mechanism also includes an extrusion head mounting seat;

[0021] One end of the extrusion head mounting base is fixed on the plane away from the first extrusion fixed beam of the extrusion movable beam; the piston rod of the first drive device passes through the extrusion movable beam and the extrusion head mounting base in sequence and is connected to the connecting section.

[0022] As a further description of the above technical solution: the first extrusion mechanism is an extrusion mechanism without a sealing structure, and the first extrusion mechanism also includes an extrusion head mounting seat, a first extrusion head guide and a scraper assembly;

[0023] One end of the extrusion head mounting base is fixed on the plane of the extrusion movable beam away from the first extrusion fixed beam; the first extrusion head guide and the scraper assembly are both grid structures corresponding to the first extrusion head. The first extrusion head guide and the scraper assembly are fixed in sequence on the side of the extrusion head mounting base away from the extrusion movable beam, so that the first extrusion head can pass through the grid structure when the extrusion action occurs.

[0024] As a further description of the above technical solution: the front faces of all the first extrusion heads can be assembled into a plane to form the front face of the second extrusion head.

[0025] As a further description of the above technical solution: the front end faces of all the first extrusion heads may be the same or different in size and shape, and the front end face shape of the first extrusion head may be square, round or irregular; preferably, the front end faces of the first extrusion heads are square in size.

[0026] The above technical solution has the following advantages or beneficial effects:

[0027] 1. The multi-stage linkage sludge extrusion device of this application has a second extrusion head of the second extrusion mechanism which is assembled from the first extrusion head of the first extrusion mechanism. Thus, the overall extrusion work and the local zonal extrusion work of one or several first extrusion heads can be realized through a set of extrusion head structures. It is especially suitable for the situation in the process of sludge separation and treatment where impurities are obstructed and the size and position of impurities cannot be identified manually. It can effectively improve the efficiency of sludge separation and treatment, and is easy to operate, saves labor, and has good treatment effect.

[0028] 2. This application sets up a multi-stage linkage device, which connects the various first drive devices through pipelines and shares a set of hydraulic system control. This not only simplifies the equipment and saves resources, but also improves the zonal extrusion effect. Moreover, since a set of hydraulic system control is used, each first extrusion head can advance independently according to the different resistance (without having to advance side by side), so that the running distance of the extrusion section is different. This prevents large pieces of sludge from sticking to the end face of the extrusion section, and also plays a role in scraping off the sludge on the side of the extrusion section when it retracts.

[0029] 3. When the push rod in the first drive device works alone, the first extrusion head with weaker resistance will move first according to the different resistance, and the first extrusion head with stronger resistance will move again after being pushed by sufficient hydraulic oil. This can enable each first drive device to operate independently to extrude the sludge when the sludge contains stones and other debris of different sizes, thus separating the stones and other debris from the sludge.

[0030] 4. The second extrusion structure of this application is provided with an extrusion movable beam, which can not only drive the second extrusion head (all the first extrusion heads) to move forward as a whole, but also provide guidance for the forward movement of the first extrusion head, provide radial force for the connecting section, and reduce wear caused by uneven force during the extrusion process.

[0031] 5. A scraper assembly is installed on the first extrusion mechanism, which can effectively scrape off the sludge adhering to the end face of the first extrusion head, eliminating the need for manual cleaning. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a multi-stage linkage sludge extrusion device proposed in this application;

[0033] Figure 2 This is a cross-sectional view of all the first extrusion mechanisms in this application;

[0034] Figure 3 for Figure 2 Right view without sectional view (also front view of the second extrusion head);

[0035] Figure 4 This is a cross-sectional view of a first extrusion mechanism in this application;

[0036] Figure 5 This is a schematic diagram showing several working states of the first extrusion mechanism in this application;

[0037] Figure 6 This is a cross-sectional view of the first extrusion mechanism according to another embodiment of this application;

[0038] Figure 7 for Figure 6 A three-dimensional schematic diagram of the embodiment shown;

[0039] Figure 8 This is a cross-sectional view of the first extrusion mechanism according to the third embodiment of this application;

[0040] Figure 9 This is an exploded view of the first extrusion mechanism according to the third embodiment of this application;

[0041] Figure 10 This is a perspective view of the first extrusion mechanism according to the third embodiment of this application;

[0042] Figure 11 This is a schematic diagram illustrating an application scenario for a multi-stage linkage sludge extrusion device proposed in this application.

[0043] Legend:

[0044] 11. First extrusion head; 12. First drive device; 13. Extrusion section; 14. Connecting section; 15. Guide sealing assembly one; 151. First sealing assembly; 152. First guide sleeve; 16. Extrusion head mounting seat; 17. Guide sealing assembly two; 171. Second sealing assembly; 172. Second guide sleeve; 18. First extrusion head guide; 19. Sludge scraper assembly; 21. Second extrusion head; 22. Second drive device; 23. First extrusion fixed beam; 24. Extrusion movable beam; 25. Guide structure; 26. Second extrusion fixed beam; 91. Base; 92. Sludge discharge grid; 93. Sludge hopper; 94. Upper sealing door; 95. Lower sealing door; 96. Sludge temporary storage hopper. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] The multi-stage linkage sludge extrusion device of this application can be applied to horizontal or vertical sludge extrusion and impurity separation equipment, such as... Figure 11 As shown, a multi-stage linkage sludge extrusion device is applied to a horizontal sludge extrusion and impurity separation device. The device includes a base 91, a sludge discharge grid 92, a sludge hopper 93, an upper sealing door 94, a lower sealing door 95, and a sludge temporary storage hopper 96. The sludge discharge grid 92 is located on the left side of the sludge hopper 93, and the multi-stage linkage sludge extrusion device is located on the right side of the sludge hopper 93. During operation, both the upper sealing door 94 and the lower sealing door 95 are initially positioned on the far left, separating the sludge storage hopper 96 from the sludge hopper 93 below. Sludge to be treated is added to the sludge storage hopper 96 using a feeding device. The upper sealing door 94 is then moved to the right, connecting the sludge storage hopper 96 to the sludge hopper 93. The sludge then falls into the sludge hopper 93 under gravity, landing on the lower sealing door 95. The upper sealing door 94 is then closed, and the multi-stage linkage sludge extrusion device is activated. This device automatically extrudes the sludge through horizontal back-and-forth movement. The sludge is squeezed out through the sludge discharge grid 92, while impurities that cannot pass through the grid remain in the sludge hopper 93. The lower sealing door 95 is then opened, allowing the impurities to fall into the impurity collection device. In specific cases, if applied to a vertical sludge extrusion and impurity separation device, the automatic extrusion of the sludge is achieved through vertical back-and-forth movement of the multi-stage linkage sludge extrusion device. Figure 11 In the figure, the sludge discharge grid 92 is located on the left side of the sludge bin 93, but it is obscured and not shown.

[0047] Example 1

[0048] like Figure 1-3 As shown, the multi-stage linkage sludge extrusion device includes nine first extrusion mechanisms (3 rows and 3 columns) and one second extrusion mechanism. Each first extrusion mechanism includes interconnected first extrusion heads 11 and first drive devices 12. The first drive devices 12 drive the first extrusion heads 11 forward to extrude or backward to reposition the sludge. The second extrusion mechanism includes interconnected second extrusion heads 21 and second drive devices 22. The second extrusion head is formed by assembling nine first extrusion heads 11 (e.g., ...). Figure 2-3 As shown), the second drive device 22 drives the second extrusion head 21 to move forward to extrude sludge or to move backward to reset.

[0049] During the sludge compression process, combined with Figure 7 and Figure 11First, the second driving device 22 drives the second extrusion head 21 forward to extrude the sludge as a whole. The sludge is squeezed out through the grid holes of the sludge discharge grid 92. When there are large impurities blocking the way, the second extrusion head 21 cannot continue to move forward and stops moving. At this time, the first driving device 12 drives the first extrusion head 11, which is not blocked, forward to continue to extrude the sludge in the remaining parts. If there are no smaller impurities blocking the way, the first extrusion head 11 will continue to move forward until it is close to the sludge discharge grid 92. If there are still smaller impurities blocking the first extrusion head 11, the first extrusion head 11 cannot continue to move forward and stops moving, thus completing the extrusion of the sludge. The entire sludge extrusion device then returns to the initial position.

[0050] Example 2

[0051] like Figure 1 and Figure 11 As shown, the second extrusion mechanism includes a second extrusion head 21, a second driving device 22, a first extrusion fixed beam 23, and an extrusion movable beam 24. The first extrusion fixed beam 23 is fixedly mounted on the base 91. The second extrusion head 21 is located on the side of the extrusion movable beam 24 away from the first extrusion fixed beam 23. One end of the second driving device 22 is fixed on the first extrusion fixed beam 23, and the other end passes through the first extrusion fixed beam 23 and is connected to the extrusion movable beam 24, which is used to drive the extrusion movable beam 24 to move the second extrusion head 21 back and forth.

[0052] The first driving device 12 is a hydraulic cylinder. The cylinder body of the hydraulic cylinder is fixed on the extrusion movable beam 24. The piston rod of the hydraulic cylinder passes through the extrusion movable beam 24 and is connected to the first extrusion head 11. The first extrusion head 11 is driven to move forward or backward by the extension and retraction of the piston rod.

[0053] During the sludge compression process, the second drive device 22 is first controlled to drive the compression moving beam 24 to move the second compression head 21 forward to compress the sludge. However, when it encounters impurities and cannot continue to move forward, the second drive device 22 stops driving forward, and the first drive device 12 starts to drive the first compression head 11 forward to continue to compress the sludge that is not blocked by impurities until it approaches the sludge discharge grid 92 or is blocked by smaller impurities, and the compression process is completed.

[0054] Example 3

[0055] like Figure 1 and Figure 11As shown, the second extrusion mechanism includes a second extrusion head 21, a second drive device 22, a first extrusion fixed beam 23, an extrusion movable beam 24, a guide structure 25, and a second extrusion fixed beam 26. The guide structure 25 consists of four guide columns. The second extrusion fixed beam 26 is fixedly mounted on the side of the base 91 away from the first extrusion fixed beam 23. Each of the four guide columns is fixed at one end to the first extrusion fixed beam 23 and at the other end, passing through the extrusion movable beam 24 and fixed to the second extrusion fixed beam 26. Figure 11 As shown, in practical applications, the side wall of the sludge silo 93 near the extrusion device can be used as the second extrusion fixing beam 26.

[0056] The guide structure 25 and the second extrusion fixing beam 26 facilitate smoother back-and-forth movement of the extrusion head.

[0057] In specific embodiments, dovetail groove guidance, slider guidance, or other methods may also be used.

[0058] Example 4

[0059] like Figure 2 and Figure 4 As shown, the first extrusion mechanism is an extrusion mechanism with a sealing structure. The first extrusion mechanism includes a square first extrusion head 11, a first driving device 12, a first guide sealing assembly 15, an extrusion head mounting seat 16, and a second guide sealing assembly 17. The first extrusion head 11 includes an extrusion section 13 and a connecting section 14. The first guide sealing assembly 15 includes a first sealing assembly 151 and a first guide sleeve 152 that cooperate with each other. The second guide sealing assembly 17 includes a second sealing assembly 171 and a second guide sleeve 172 that cooperate with each other. One end of the extrusion head mounting seat 16 is fixed on the plane of the extrusion movable beam 24 away from the first extrusion fixed beam 23. The piston rod of the first driving device 12 passes through the extrusion movable beam 24, the extrusion head mounting seat 16, the first guide sleeve 152, and the first sealing assembly 151 in sequence and is connected to the connecting section 14. The connecting section 14 passes through the second guide sleeve 172 and the second sealing assembly 171 in sequence and is connected to the connecting section 14.

[0060] The piston rod of the first drive device 12 passes through a set of guide sealing assembly 15. The first sealing assembly 151 can effectively remove dust, sludge and other debris from the piston rod, ensuring the cleanliness of the piston rod and preventing dirt from being brought back into the oil cylinder. The first guide sleeve 152 guides the piston rod, which can reduce the wear between the piston rod and the cylinder head of the oil cylinder body caused by the eccentric load during the extension process, and ensure the safety of the piston rod during use.

[0061] Each connecting segment 14 passes through a set of guide sealing components 17. The second sealing components 171 can effectively remove dust, mud and other debris from the connecting segment 14, ensuring the cleanliness of its surface. The second guide sleeve 172 guides the connecting segment 14, which can reduce the deformation, deflection and wear between the first extrusion head 11 installed at its upper end due to the eccentric load during the extrusion process.

[0062] In this embodiment, the first extrusion head 11 is a square columnar structure with an inner hole in the middle, which is installed and fixed at the other end of the connecting section 14. The inner hole is used to fix it to the connecting section 14 and can be freely disassembled. One end of the extrusion head mounting base 16 is fixed on one side plane of the extrusion movable beam 24. Each group of guide sealing components 17 in the first extrusion mechanism is fixed at the other end of the extrusion head mounting base 16. The movement of the piston rod of each first drive device 12 (hydraulic cylinder) can drive a connecting section 14 installed on it to move, and then drive a first extrusion head 11 installed on this connecting section 14 to move back and forth to extrude the sludge in front of it.

[0063] The function of this extrusion device is to extrude and remove impurities from the sludge material containing impurities that enters the sludge bin 93. Its working process is as follows: the piston rods of the first drive device 12 (hydraulic cylinder) of the first extrusion mechanism retract to their final positions, and the front faces of its first extrusion heads 11 are flush, so that the front face of the second extrusion head 21, formed by the assembly of all the first extrusion heads 11, forms a space for carrying the sludge between the sludge bin 93, the sludge discharge grid 92, the upper sealing door 94, and the lower sealing door 95. The lower sealing door 95 is initially in the foremost position (according to...). Figure 11 (As shown in the leftmost position), the sludge tank 93 is completely blocked from the outside. The upper sealing door 94 is moved to the last position (press...). Figure 11 (As shown in the rightmost position) The sludge temporary storage chamber 96 is connected to the sludge material box 93. The sludge containing impurities, which was originally on the upper sealing door 94 in the sludge temporary storage chamber 96, falls into the sludge material box 93 under the action of gravity. Then, the upper sealing door 94 is driven to the frontmost position (press...). Figure 11 (As shown in the leftmost position) The sludge temporary storage bin 96 is blocked from the sludge material box 93, and the sludge containing impurities is sealed in the space between the sludge material box 93, the upper sealing door 94, the lower sealing door 95, the second extrusion head 21, and the sludge discharge grid 92. After the operation starts, the piston rods of the two extrusion hydraulic cylinders (second drive device 22) extend, driving the extrusion movable beam 24 to move the second extrusion head 21, which is composed of 9 sets of first extrusion heads 11 mounted on it, forward along the length of the guide column, compressing the sludge material. Since only the sludge discharge grid 92 has grid holes in the original space, the sludge material can only be squeezed out from the holes of the sludge discharge grid 92 and discharged to the outside from the crushed sludge outlet under the action of gravity.

[0064] If there are no impurities in the sludge or the size of the impurities is smaller than the size of the holes opened on the sludge discharge grid 92, the piston rods of the two extrusion hydraulic cylinders (second drive device 22) will extend to the maximum stroke, moving the front ends of the nine first extrusion heads 11 forward and simultaneously to a position close to the inside of the sludge discharge grid 92. During the entire process, the first drive device 12 of the nine first extrusion heads 11 does not operate.

[0065] When the size of impurities in the sludge is larger than the size of the holes in the sludge discharge grate 92, the piston rods of the two compression hydraulic cylinders (second drive device 22) extend, driving the front end of the second compression head 21, composed of nine first compression heads 11, to move forward and compress the sludge. This continues until the impurities simultaneously contact the inner side of the sludge discharge grate 92 and the front end of the second compression head 21. Because the impurities obstruct the compression head assembly from moving forward, the hydraulic oil pressure inside the two compression hydraulic cylinders (second drive device 22) increases. When the pressure reaches a set value, the two compression hydraulic cylinders (second drive device 22) stop moving forward. At this time, hydraulic oil is simultaneously supplied to the nine distribution cylinders (first drive device 12). Due to the obstruction of the impurities, any compression head assembly with impurities blocking its path cannot move forward. Compression head assemblies without impurities blocking their path continue to move forward under the drive of their distribution cylinders (first drive device 12), compressing the sludge until they approach the inner side of the sludge discharge grate 92. If, during the forward movement, smaller impurities block the advancing extrusion head assembly, these obstructed extrusion head assemblies will also stop moving forward.

[0066] Example 5

[0067] like Figure 6-7 As shown, the first extrusion mechanism is an extrusion mechanism without a sealing structure. The first extrusion mechanism includes a first extrusion head 11, a first drive device 12, and an extrusion head mounting base 16. The first extrusion head 11 includes an extrusion section 13 and a connecting section 14. One end of the extrusion head mounting base 16 is fixed on the plane of the extrusion movable beam 24 away from the first extrusion fixed beam 23. The first drive device 12 is a hydraulic cylinder. The cylinder body of the hydraulic cylinder is fixed on the extrusion movable beam 24. The piston rod of the hydraulic cylinder passes through the extrusion movable beam 24 and the extrusion head mounting base 16 in sequence and is connected to the connecting section 14.

[0068] like Figure 7 In the first extrusion head 11 shown, the extrusion section 13 is square, the connecting section 14 is rhomboid, and the connecting section 14 away from the extrusion section 13 can be of the same shape, for connecting with the first driving device 12.

[0069] In a specific embodiment, the shape of the first extrusion head 11 can be at least one of square, round, rhomboid or irregular shape.

[0070] Example 6

[0071] like Figure 8-10 As shown, the first extrusion mechanism is an extrusion mechanism without a sealing structure. The first extrusion mechanism includes a first extrusion head 11, a first driving device 12, an extrusion head mounting base 16, a first extrusion head guide 18, and a scraper assembly 19. The first extrusion head 11 includes an extrusion section 13 and a connecting section 14. One end of the extrusion head mounting base 16 is fixed on the plane of the extrusion movable beam 24 away from the first extrusion fixed beam 23. The first extrusion head guide 18 and the scraper assembly 19 are both rectangular frame structures that correspond one-to-one with the first extrusion head 11. The first extrusion head guide 18 and the scraper assembly 19 are sequentially fixed on the side of the extrusion head mounting base 16 away from the extrusion movable beam 24, so that the first extrusion head 11 can pass through the rectangular frame structure when the extrusion action occurs.

[0072] The first extrusion head guide 18 can guide the forward or backward movement of the first extrusion head 11, provide radial force to the connecting section, and reduce wear caused by uneven force during the extrusion process. When the first drive device 12 drives the first extrusion head 11 forward, the first extrusion head 11 will pass through the scraper assembly 19, that is, the front end of the first extrusion head 11 will exceed the scraper assembly 19. When the first extrusion head 11 retracts, the scraper assembly 19 can scrape off the sludge adhering to the first extrusion head 11, thereby achieving an effective cleaning effect.

[0073] The first drive device 12 is a hydraulic cylinder. Several first drive devices 12 are connected by pipelines and controlled by a hydraulic system to make several first drive devices 12 operate in conjunction.

[0074] Because a hydraulic system is used for control, during the process of the first drive device 12 driving the first extrusion head 11 to advance and extrude mud, each first extrusion head 11 can advance independently according to the different resistance (without having to advance side by side), so that the running distance of the extrusion section 13 is different, preventing large pieces of sludge from sticking to the end face of the extrusion section 13, and also serving to scrape off the sludge on the side of the extrusion section when it retracts.

[0075] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-stage linkage sludge extrusion device, characterized in that: It includes several first extrusion mechanisms and second extrusion mechanisms; The first extrusion mechanism includes a first extrusion head (11) and a first drive device (12) connected to each other. The first drive device (12) is used to drive the first extrusion head (11) forward to extrude sludge or to retract and reset. The second extrusion mechanism includes a second extrusion head (21) and a second drive device (22) connected to each other. The second extrusion head is composed of a plurality of first extrusion heads (11). The second drive device (22) drives the second extrusion head (21) to move forward to extrude sludge or to move backward to reset. The second extrusion mechanism further includes a first extrusion fixed beam (23) and an extrusion movable beam (24). The first extrusion fixed beam (23) is fixedly mounted on the base (91). The second extrusion head (21) is mounted on the side of the extrusion movable beam (24) away from the first extrusion fixed beam (23). One end of the second driving device (22) is fixed on the first extrusion fixed beam (23), and the other end is connected to the extrusion movable beam (24) for driving the extrusion movable beam (24) to move the second extrusion head (21) back and forth. The first drive device (12) passes through and is fixed on the extrusion movable beam (24), so that the drive end of the first drive device (12) is connected to the first extrusion head (11); The second extrusion mechanism also includes a guide structure (25), one end of which is fixedly mounted on the first extrusion fixing beam (23) to provide guidance for the back-and-forth movement of the second extrusion head (21); The guide structure (25) is a guide column. The second extrusion mechanism also includes a second extrusion fixing beam (26). The second extrusion fixing beam (26) is fixedly mounted on the base (91) and located on the side of the second extrusion head (21) away from the extrusion movable beam (24). One end of the guide column is fixed on the first extrusion fixing beam (23), and the other end passes through the extrusion movable beam (24) and is fixed on the second extrusion fixing beam (26). The first extrusion head (11) includes an extrusion section (13) and a connecting section (14). One end of the connecting section (14) is fixedly connected to the extrusion section (13), and the other end is fixedly connected to the first driving device (12).

2. The multi-stage linkage sludge extrusion device according to claim 1, characterized in that: The first drive device (12) and the second drive device (22) are hydraulic cylinders, pneumatic cylinders or electric cylinders.

3. The multi-stage linkage sludge extrusion device according to claim 1, characterized in that: The first drive device (12) is a hydraulic cylinder. Several first drive devices (12) are connected by pipelines and controlled by a hydraulic system so that several first drive devices (12) can operate in conjunction.

4. The multi-stage linkage sludge extrusion device according to claim 1, characterized in that: There are four guide columns.

5. The multi-stage linkage sludge extrusion device according to claim 1, characterized in that: The first extrusion mechanism is an extrusion mechanism with a sealing structure. The first extrusion mechanism further includes a first guide sealing assembly (15), an extrusion head mounting seat (16), and a second guide sealing assembly (17). The first guide sealing assembly (15) includes a first sealing assembly (151) and a first guide sleeve (152) that cooperate with each other. The second guide sealing assembly (17) includes a second sealing assembly (171) and a second guide sleeve (172) that cooperate with each other. One end of the extrusion head mounting base (16) is fixed on the plane of the extrusion movable beam (24) away from the first extrusion fixed beam (23); the piston rod of the first drive device (12) passes through the extrusion movable beam (24), the extrusion head mounting base (16), the first guide sleeve (152) and the first sealing assembly (151) in sequence and is connected to the connecting section (14); the connecting section (14) passes through the second guide sleeve (172) and the second sealing assembly (171) in sequence and is connected to the connecting section (14).

6. The multi-stage linkage sludge extrusion device according to claim 1, characterized in that: The first extrusion mechanism is an extrusion mechanism without a sealing structure, and the first extrusion mechanism also includes an extrusion head mounting base (16). One end of the extrusion head mounting base (16) is fixed on the plane of the extrusion movable beam (24) away from the first extrusion fixed beam (23); the piston rod of the first drive device (12) passes through the extrusion movable beam (24) and the extrusion head mounting base (16) in sequence and is connected to the connecting section (14).

7. The multi-stage linkage sludge extrusion device according to claim 1, characterized in that: The first extrusion mechanism is an extrusion mechanism without a sealing structure. The first extrusion mechanism also includes an extrusion head mounting seat (16), a first extrusion head guide (18), and a scraper assembly (19). One end of the extrusion head mounting base (16) is fixed on the plane of the extrusion movable beam (24) away from the first extrusion fixed beam (23); the first extrusion head guide (18) and the scraper assembly (19) are both grid structures corresponding one-to-one with the first extrusion head (11). The first extrusion head guide (18) and the scraper assembly (19) are fixed in sequence on the side of the extrusion head mounting base (16) away from the extrusion movable beam (24), so that the first extrusion head (11) can pass through the grid structure when the extrusion action occurs.

8. The multi-stage linkage sludge extrusion device according to claim 1, characterized in that: The front faces of all the first extrusion heads (11) can be combined into a plane to form the front face of the second extrusion head (21).

9. The multi-stage linkage sludge extrusion device according to claim 1, characterized in that: All the front end faces of the first extrusion heads (11) are the same or different in size and shape, and the front end face shape of the first extrusion head (11) is square, round or irregular.

10. The multi-stage linkage sludge extrusion device according to claim 9, characterized in that: The front end face of the first extrusion head (11) is a square of the same size.

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