Backflushing circulating mud preparation and pumping integrated equipment and control method

Abstract

The application relates to the technical field of solid waste treatment equipment, and provides a backflushing circulating type mud preparation and pumping integrated equipment and a control method.The backflushing circulating type mud preparation and pumping integrated equipment comprises a barrel body and a collision dispersion plate, the barrel body comprises a bottom wall and a side wall, the upper surface of the bottom wall gradually decreases from the middle part of the bottom wall to the outer edge of the bottom wall, the middle part of the bottom wall is provided with a material inlet, and the bottom wall is provided with a material outlet adjacent to the outer edge; a circulating pump, the outlet of the circulating pump is connected to the material inlet, and the inlet of the circulating pump is connected to the material outlet; the circulating pump can pump the material from the material inlet into the barrel body and spray the material to the collision dispersion plate; and a scraping mechanism comprising a rotary driving device and a rotary scraping piece, the rotary scraping piece is located in the barrel body and abuts against the upper surface of the bottom wall, and the backflushing circulating type mud preparation and pumping integrated equipment can solve the technical problems of the existing equipment, such as stirring dead angle, gravel sinking to the bottom and low treatment efficiency.

Description

Technical Field

[0001] This application relates to the field of solid waste treatment equipment technology, and more specifically, to an integrated equipment and control method for backflushing and circulating slurry preparation and pumping. Background Technology

[0002] In the process of urbanization, numerous underground spaces and tunnels are excavated, resulting in a massive amount of excavated and replaced soil and waste. The vast majority of this soil and waste is treated as waste and dumped, causing a significant waste of land resources and secondary pollution to the surrounding environment. Furthermore, during construction, some strip-shaped or irregularly shaped trenches face challenges in compacting backfill materials due to narrow working surfaces and deep backfilling depths. Therefore, using excavated waste to create highly fluid backfill slurry can improve backfilling efficiency and achieve in-situ resource utilization of waste soil. However, existing backfill slurry production equipment often suffers from poor integration and difficult turnover. Moreover, key equipment such as horizontal mixers suffers from problems like gravel settling at the bottom and dead zones in the mixing process, leading to low waste soil processing efficiency and a large amount of subsequent cleaning work. Summary of the Invention

[0003] The main objective of this invention is to provide an integrated equipment for backflushing and circulating mud preparation and pumping, which aims to solve the technical problems of gravel settling at the bottom, dead zones in mixing, and low processing efficiency in the existing technology when mixing equipment is used to process slag and soil.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: an integrated equipment for backflushing and circulating mud preparation and pumping, comprising:

[0005] The barrel body and the impact dispersion plate disposed above the barrel body, the barrel body includes a bottom wall and a side wall extending upward from the outer edge of the bottom wall, the upper surface of the bottom wall gradually decreases from the middle of the bottom wall to the outer edge of the bottom wall, the middle of the bottom wall has a material inlet, and the bottom wall has a material outlet near its outer edge.

[0006] A circulating pump, the outlet of which is connected to the material inlet through a first pipeline, and the inlet of which is connected to the material outlet through a second pipeline; the circulating pump is capable of pumping material from the material inlet into the interior of the barrel and spraying it onto the impact dispersion plate;

[0007] The scraping mechanism includes a rotary drive device and a rotary scraper connected to the rotary drive device. The rotary scraper is located inside the barrel and abuts the upper surface of the bottom wall. When the rotary scraper rotates, it can pass through the material outlet.

[0008] Furthermore, the outer edge of the upper surface of the bottom wall is a horizontal annular surface, and the upper surface of the bottom wall of the barrel has an inclined guide surface that slopes downward toward the outer edge of the bottom wall. The inclined guide surface extends from the edge of the material inlet to the horizontal annular surface, and the material outlet is located on the bottom wall of the barrel at a position corresponding to the horizontal annular surface.

[0009] Furthermore, the inclined guide surface is a conical surface.

[0010] Furthermore, the rotating scraper includes a scraper mounting bracket that is pulverizedly connected to the rotating drive device, and an inclined elastic scraper and a horizontal elastic scraper disposed on the scraper mounting bracket. The lower surface of the inclined elastic scraper is in contact with the inclined guide surface, and the lower surface of the horizontal elastic scraper is in contact with the horizontal annular surface.

[0011] Furthermore, the impact dispersion plate is connected to the rotary drive device and can rotate along the rotation direction of the rotary scraper.

[0012] Furthermore, the backflushing circulation integrated mud preparation and pumping equipment includes a support frame connected to the side wall of the tank body, a rotary drive motor located above the tank body is mounted on the support frame, a connecting frame is mounted on the output shaft of the rotary drive motor, and the rotary scraper and the impact dispersion plate are both connected to the lower part of the connecting frame.

[0013] Furthermore, the rotating scraper is connected to the lower part of the connecting frame via an adjustable lifting rod, which is located on the outside of the impact dispersion plate.

[0014] Furthermore, the material outlets are multiple, the material inlet is one, and the sum of the cross-sectional areas of the multiple material outlets is equal to the cross-sectional area of ​​the one material inlet.

[0015] Furthermore, the backflushing circulation type integrated mud preparation and pumping equipment includes a pumping pipeline connected to the first pipeline, a first on / off control valve is provided on the section of the first pipeline between the pumping pipeline and the material inlet, and a second on / off control valve is provided on the pumping pipeline.

[0016] Furthermore, the control method includes controlling the integrated backflushing circulation mud preparation and pumping equipment to switch between three operating modes, the three operating modes being:

[0017] In the pumping mode, the first on / off control valve is closed, the second on / off control valve is open, and the speed of the motor corresponding to the circulating pump is 1450 r / min to 1550 r / min.

[0018] In the homogeneous circulation mode, the first on / off control valve is open, the second on / off control valve is closed, and the speed of the motor corresponding to the circulation pump is 700 r / min to 800 r / min.

[0019] In the cleaning mode, the first on / off control valve is open, the second on / off control valve is closed, and the speed of the motor corresponding to the circulation pump is 100 r / min to 200 r / min.

[0020] The beneficial effects of the backflushing circulation integrated mud preparation and pumping equipment provided in this application are as follows:

[0021] In the backflushing circulating mud preparation and pumping integrated equipment provided in this embodiment of the invention, since an impact dispersing plate is set at the top of the tank, the circulating pump can pump the material from the material inlet into the tank and spray it onto the impact dispersing plate. Therefore, clean water, slag to be homogenized, and other materials can be first loaded into the tank. After adding an additive (such as a slag dispersant) to mix them, a slurry is formed. As the mixed material flows downward to the outer edge of the bottom wall and the rotating scraper scrapes the material, the gravel at the bottom of the tank is continuously swept into the material outlet and flows out to the circulating pump. Then, it flows out from the circulating pump and enters the tank through the material inlet. The material continuously entering the barrel is sprayed onto the impact dispersing plate under the circulating drive of the circulating pump. It is dispersed by impacting the impact dispersing plate, and the slag mixture is impacted and broken into finer and more delicate materials. Then, it flows down from the middle of the bottom wall along the gradually decreasing upper surface, reaching the bottom wall near its outer edge again, and then flows out from the material outlet to the circulating pump. It then flows out from the circulating pump and enters the barrel through the material inlet. This process is repeated to process the slag and other materials into finer and more delicate slurry through circulation and impact dispersal. This can solve the problems of slag material settling at the bottom and dead corners in the mixing, improve production efficiency, and reduce the amount of subsequent cleaning work. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A cross-sectional view of an integrated backflushing and circulating mud preparation and pumping equipment provided in one embodiment of this application;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0026] Figure 4 A simplified schematic diagram of the backflushing circulation integrated mud preparation and pumping equipment provided in a homogeneous circulation mode, as an embodiment of this application;

[0027] Figure 5 A perspective view of some components of an integrated backflushing and circulating mud preparation and pumping equipment provided for an embodiment of this application, wherein the tank body is omitted;

[0028] Figure 6 This is a perspective view of an integrated backflushing and circulating mud preparation and pumping equipment provided for one embodiment of this application.

[0029] The details of the reference numerals used in the above figures are as follows:

[0030] 1-Impact dispersing plate; 2-Circulating pump; 3-First pipeline; 4-Second pipeline; 5-Scraper mounting bracket; 6-Inclined elastic scraper; 7-Horizontal elastic scraper; 8-Support frame; 9-Rotary drive motor; 10-Connecting frame; 11-Lifting adjustable rod; 12-Crossbeam; 13-Nut; 14-Pumping pipeline; 15-First on / off control valve; 16-Second on / off control valve; 91-Output shaft; 100-Barrel body; 101-Bottom wall; 102-Side wall; 103-Material inlet; 104-Material outlet; 105-Horizontal annular surface; 106-Inclined guide surface. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0032] It should be noted that when a component is referred to as being "fixed to" or "located on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0033] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more pieces, unless otherwise explicitly specified.

[0035] To illustrate the technical solutions described in this application, the following detailed description is provided in conjunction with specific drawings and embodiments.

[0036] See Figures 1 to 6 This invention provides an integrated equipment for backflushing and circulating mud preparation and pumping, comprising:

[0037] The barrel 100 includes a bottom wall 101 and a side wall 102 extending upward from the outer edge of the bottom wall 101. The upper surface of the bottom wall 101 gradually decreases from the middle of the bottom wall 101 to the outer edge of the bottom wall 101. The top of the barrel 100 can be open. The middle of the bottom wall 101 has a material inlet 103. The bottom wall 101 has a material outlet 104 near its outer edge. The side wall 102 of the barrel 100 can be provided with a feed inlet for the slag to be treated to enter. Of course, even if the side wall 102 is not provided with a feed inlet for the slag to be treated to enter, it is also possible to directly pour (feed) the slag from the top of the barrel 100.

[0038] The circulating pump 2 can be a slurry pump or a similar alternative. The outlet of the circulating pump 2 is connected to the material inlet 103 through the first pipeline 3, and the inlet of the circulating pump 2 is connected to the material outlet 104 through the second pipeline 4. The circulating pump 2 can pump the material from the material inlet 103 into the barrel 100 and spray it onto the impact dispersion plate 1.

[0039] The scraping mechanism includes a rotary drive device and a rotary scraper connected to the rotary drive device. The rotary scraper is located inside the barrel 100 and abuts against the upper surface of the bottom wall 101. When the rotary scraper rotates, it can pass through the material outlet 104.

[0040] In the backflushing circulating mud preparation and pumping integrated equipment provided in this embodiment of the invention, since an impact dispersing plate 1 is set above the tank 100, the circulating pump 2 can pump the material from the material inlet 103 into the tank 100 and spray it onto the impact dispersing plate 1. Therefore, materials such as slag to be homogenized can be loaded into the tank 100 first, and additives (such as slag dispersant, cement, etc.) can be added to mix them. As the mixed material flows downward to the outer edge of the bottom wall 101 and the rotating scraping action of the rotating scraper, the gravel at the bottom of the tank 100 can be continuously swept into the material outlet 104 and flow out to the circulating pump 2. Then, it flows out from the circulating pump 2 and enters the tank 100 from the material inlet 103. The material continuously entering the tank 100 is sprayed onto the impact dispersing plate 1 under the circulating drive of the circulating pump 2 and is dispersed by impacting the impact dispersing plate 1 (see...). Figure 4 The slag mixture is impacted and broken into finer and more delicate materials. Then, it flows down from the middle of the bottom wall 101 along the gradually decreasing upper surface, reaching the bottom wall 101 near its outer edge again, and then flows out from the material outlet 104 to the circulation pump 2. From the circulation pump 2, it flows out from the material inlet 103 into the barrel 100. This process is repeated to process the slag and other materials into finer and more delicate slurry through circulation and impact. This can solve the problems of slag material settling at the bottom and dead corners in the mixing, improve production efficiency, and reduce the amount of subsequent cleaning work. The impact dispersing plate 1 can also prevent the material inside the barrel 100 from splashing out. The outer edge of the impact dispersing plate 1 should be as close as possible to the side wall 102 of the barrel 100.

[0041] See Figure 4 It should be noted that the unique feature of the backflushing circulation mud preparation and pumping integrated equipment provided in this embodiment of the invention is that its dispersing and homogenizing treatment of materials in the tank is completely different from the conventional mode of dispersing and homogenizing materials by stirring. On the one hand, through the circulation system formed by the circulation pump 2 and the tank 100, the materials continuously pass through the circulation pump 2 and the tank 100 for large-scale circulation. Thus, the materials are dispersed by continuous impact and collision with the dispersion plate 1, and through the continuous large-scale circulation of the materials, the slag and other materials are finally processed into fine and delicate slurry. In addition, from the material inlet 103, the materials are continuously fed into the tank. The material ejected by the back jet forms an upward guiding effect in the middle of the barrel 100. After the dispersed material falls to the periphery of the barrel 100, under the influence of the middle guiding effect, this part of the material can also form a small circulation movement inside the barrel 1. This also helps to process materials such as slag into fine and delicate slurry, ultimately realizing the utilization and recycling of solid waste. Among them, the scraping mechanism only plays a certain degree of auxiliary stirring role. Its main function is to effectively scrape the material on the bottom wall 101 of the barrel 100, so that the scraped material can smoothly enter the material outlet 104 and participate in the circulation movement.

[0042] See Figure 1 and Figure 2 According to one embodiment of the present invention, the outer edge of the upper surface of the bottom wall 101 is a horizontal annular surface 105, and the upper surface of the bottom wall 101 of the barrel 100 has an inclined guide surface 106 that slopes downward toward the outer edge of the bottom wall 101. The inclined guide surface 106 extends from the edge of the material inlet 103 to the horizontal annular surface 105. The material outlet 104 is located on the bottom wall 101 of the barrel 100 at a position corresponding to the horizontal annular surface 105, or it may be located adjacent to the position on the bottom wall 101 corresponding to the horizontal annular surface 105.

[0043] According to one embodiment of the present invention, the inclined guide surface 106 is a conical surface, but it is not a conical surface in the strict sense. Due to the presence of the material inlet 103, the inclined guide surface 106 is equivalent to a conical surface after removing the pointed part.

[0044] According to one embodiment of the present invention, the rotary scraper includes a scraper mounting bracket 5 that is connected to a rotary drive device and an inclined elastic scraper 6 and a horizontal elastic scraper 7 disposed on the scraper mounting bracket 5. The lower surface of the inclined elastic scraper 6 abuts against the inclined guide surface 106, and the lower surface of the horizontal elastic scraper 7 abuts against the horizontal annular surface 105. The inclined elastic scraper 6 and the horizontal elastic scraper 7 can be components made of materials such as rubber strips.

[0045] According to one embodiment of the present invention, the impact dispersing plate 1 is connected to the rotary drive device and can rotate along the rotation direction of the rotary scraper. In this way, when the material in the barrel impacts the impact dispersing plate 1 during the circulation flow of the circulating pump 2 and the barrel 100, the impact dispersing plate 1 can rotate to disperse the backflushing material more widely, which greatly improves the effect of material dispersion during the impact process and further enhances the material dispersion and homogenization effect of this backflushing circulation mud preparation and pumping integrated equipment. The impact dispersing plate 1 can be driven to rotate by connecting to components such as a motor.

[0046] See Figure 1 and Figure 5According to a specific embodiment of the present invention, the backflushing circulation type integrated equipment for mud preparation and pumping includes a support frame 8 connected to the side wall 102 of the tank body 100. A rotary drive motor 9 located above the tank body 100 is mounted on the support frame 8. A connecting frame 10 is mounted on the output shaft 91 of the rotary drive motor 9. Specifically, the support frame 8 can span across the top of the tank body 100 and be fixed to both sides of the side wall 102 of the tank body 100. The rotary scraper and the impact dispersion plate 1 are both connected to the lower part of the connecting frame 10, so that when the rotary drive motor 9 is running, it can simultaneously drive the rotary scraper and the impact dispersion plate 1 to rotate. Of course, it is also possible for the rotary scraper and the impact dispersion plate 1 to each be equipped with a rotary drive device. In addition, the impact dispersion plate 1 can also be connected to the lifting adjustable rod 11 mentioned below.

[0047] See Figure 1 , Figure 3 and Figure 5 According to a preferred embodiment of the present invention, the rotating scraper is connected to the lower part of the connecting frame 10 via a lifting adjustable rod 11. If the rotating scraper is worn or its position needs to be adjusted for other reasons, the lifting adjustable rod 11 can be adjusted to keep the rotating scraper close to the bottom wall 101 of the barrel 100. The lifting adjustable rod 11 is located on the outside of the impact dispersion plate 1. Specifically, two lifting adjustable rods 11 can be connected to the lower sides of the connecting frame 10, that is, two rotating scrapers are provided. Crossbeams 12 can extend from both sides of the connecting frame 10. The lifting adjustable rod 11 is fastened to the crossbeam 12 via two nuts 13 located above and below the crossbeam 12. When it is necessary to adjust the height of the lifting adjustable rod 11, the nuts 13 are loosened so that the lifting adjustable rod 11 can move up and down along the crossbeam 12.

[0048] According to a preferred embodiment of the present invention, there are multiple material outlets 104 and one material inlet 103. The sum of the cross-sectional areas of the multiple material outlets 104 is equal to the cross-sectional area of ​​the material inlet 103. Preferably, there are four material outlets 104. The four material outlets 104 are evenly distributed at 90° intervals on the bottom wall 101 of the barrel 100. More material outlets 104 can disperse the flow of material and facilitate the homogenization operation of material. When there are multiple material outlets 104, the second pipeline 4 can be connected to the material outlets 104 through the corresponding multiple branch pipelines 18.

[0049] See Figure 5According to one embodiment of the present invention, the backflushing circulation type integrated equipment for mud preparation and pumping includes a pumping pipeline 14 connected to a first pipeline 3. A first on / off control valve 15 is provided on the section of the first pipeline 3 between the pumping pipeline 14 and the material inlet 103. A second on / off control valve 16 is provided on the pumping pipeline 14. Both the first on / off control valve 15 and the second on / off control valve 16 are preferably one-way valves, but may also be other suitable valves.

[0050] Furthermore, the present invention also provides a control method for the aforementioned integrated backflushing circulation mud preparation and pumping equipment. The control method includes controlling the integrated backflushing circulation mud preparation and pumping equipment to switch between three working modes, the three working modes being:

[0051] In pumping mode, the first on / off control valve 15 is closed and the second on / off control valve 16 is open. The speed of the motor corresponding to the circulating pump 2 is 1450 r / min to 1550 r / min. Due to the long pumping distance, the motor corresponding to the circulating pump 2 operates at high speed and full load in this mode.

[0052] In the homogenization circulation mode, the first on / off control valve 15 is open and the second on / off control valve 16 is closed. The speed of the motor corresponding to the circulation pump 2 is 700 r / min to 800 r / min. In this mode, the motor corresponding to the circulation pump 2 is at a medium speed to ensure the effect of material impacting and colliding with the dispersion plate 1 and the effect of material circulation and mixing.

[0053] In the cleaning mode, the first on / off control valve 15 is open and the second on / off control valve 16 is closed. The speed of the motor corresponding to the circulation pump 2 is 100r / min to 200r / min. In the cleaning mode, clean water can be injected into the tank 100. Since the speed requirements for circulation and sewage discharge are low at this time, the motor corresponding to the circulation pump 2 is set to a relatively low speed.

[0054] The specific operating steps of this integrated backflushing and circulating mud preparation and pumping equipment can be as follows:

[0055] a. Close the second on / off control valve 16, open the first on / off control valve 15, add a certain amount of water into the tank 100, and then turn on the circulation pump 2 to circulate.

[0056] b. Add the crushed slag to the bucket 100, circulate and backflush for 1 minute, and then turn on the scraping mechanism.

[0057] c. Add the admixture, and continue to operate the circulation pump 2 for 5 minutes to ensure that the admixture is fully mixed with the mud.

[0058] d. After the cycle is complete, turn off the circulation pump 2, and then close the first on / off control valve 15.

[0059] e. Start pumping, open the second on / off control valve 16, and start the circulation pump 2 and the scraping mechanism.

[0060] f. After pumping is completed, shut down the circulation pump 2 and the scraping mechanism, and finally shut down the second on / off control valve 16.

[0061] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A backflushing circulation type integrated equipment for mud preparation and pumping, characterized in that, include: The barrel body and the impact dispersion plate disposed above the barrel body, the barrel body includes a bottom wall and a side wall extending upward from the outer edge of the bottom wall, the upper surface of the bottom wall gradually decreases from the middle of the bottom wall to the outer edge of the bottom wall, the middle of the bottom wall has a material inlet, and the bottom wall has a material outlet near its outer edge. A circulating pump, the outlet of which is connected to the material inlet via a first pipeline, and the inlet of which is connected to the material outlet via a second pipeline; The circulating pump can pump material from the material inlet into the barrel and spray it onto the impact dispersion plate; The scraping mechanism includes a rotary drive device and a rotary scraper connected to the rotary drive device. The rotary scraper is located inside the barrel and abuts the upper surface of the bottom wall. When the rotary scraper rotates, it can pass through the material outlet.

2. The integrated equipment for backflushing and circulating mud preparation and pumping according to claim 1, characterized in that, The outer edge of the upper surface of the bottom wall is a horizontal annular surface. The upper surface of the bottom wall of the barrel has an inclined guide surface that slopes downward toward the outer edge of the bottom wall. The inclined guide surface extends from the edge of the material inlet to the horizontal annular surface. The material outlet is located on the bottom wall of the barrel at a position corresponding to the horizontal annular surface.

3. The integrated equipment for backflushing and circulating mud preparation and pumping according to claim 2, characterized in that, The inclined guide surface is a conical surface.

4. The integrated equipment for backflushing and circulating mud preparation and pumping according to claim 3, characterized in that, The rotating scraper includes a scraper mounting bracket that is pulsatingly connected to the rotating drive device, and an inclined elastic scraper and a horizontal elastic scraper disposed on the scraper mounting bracket. The lower surface of the inclined elastic scraper is in contact with the inclined guide surface, and the lower surface of the horizontal elastic scraper is in contact with the horizontal annular surface.

5. The integrated equipment for backflushing and circulating mud preparation and pumping according to any one of claims 1 to 4, characterized in that, The impact dispersion plate is connected to the rotary drive device and can rotate along the rotation direction of the rotary scraper.

6. The integrated equipment for backflushing and circulating mud preparation and pumping according to claim 5, characterized in that, The backwash circulation integrated mud preparation and pumping equipment includes a support frame connected to the side wall of the tank body. A rotary drive motor located above the tank body is installed on the support frame. A connecting frame is installed on the output shaft of the rotary drive motor. The rotary scraper and the impact dispersion plate are both installed below the connecting frame.

7. The integrated equipment for backflushing and circulating mud preparation and pumping according to claim 6, characterized in that, The rotating scraper is connected to the lower part of the connecting frame via an adjustable lifting rod, which is located on the outside of the impact dispersion plate.

8. The integrated equipment for backflushing and circulating mud preparation and pumping according to any one of claims 1 to 4, characterized in that, The material outlets are multiple, and the material inlet is one. The sum of the cross-sectional areas of the multiple material outlets is equal to the cross-sectional area of ​​the one material inlet.

9. The integrated equipment for backflushing and circulating mud preparation and pumping according to any one of claims 1 to 4, characterized in that, The backwash circulation integrated mud preparation and pumping equipment includes a pumping pipeline connected to the first pipeline. A first on / off control valve is provided on the section of the first pipeline between the pumping pipeline and the material inlet. A second on / off control valve is provided on the pumping pipeline.

10. A control method for the integrated equipment for backflushing and circulating mud preparation and pumping according to claim 9, characterized in that, The control method includes controlling the backflushing circulation integrated mud preparation and pumping equipment to switch between three working modes, the three working modes being: In the pumping mode, the first on / off control valve is closed, the second on / off control valve is open, and the speed of the motor corresponding to the circulating pump is 1450 r / min to 1550 r / min. In the homogeneous circulation mode, the first on / off control valve is open, the second on / off control valve is closed, and the speed of the motor corresponding to the circulation pump is 700 r / min to 800 r / min. In the cleaning mode, the first on / off control valve is open, the second on / off control valve is closed, and the speed of the motor corresponding to the circulation pump is 100 r / min to 200 r / min.

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