Automatic slurry stirring device for geological drilling

Abstract

The invention discloses an automatic slurry stirring device for geological drilling. The automatic slurry stirring device comprises a slurry barrel, an auger type automatic feeding machine and an auxiliary material conveying assembly. The auxiliary material conveying assembly is used for adding matching auxiliary materials into the slurry barrel; the auger type automatic feeding rack is used for automatically conveying a slurry proportioning main material to an inner cavity of the slurry barrel; the slurry barrel is a main container of the stirring device, and water, the slurry proportioning main material and the proportioning auxiliary material are circularly stirred in the slurry barrel and the closed loop under the driving of the high-speed impeller pump; by utilizing system linkage control among the external water pump, the high-speed impeller pump, the speed regulating motor and each pipeline electromagnetic valve, the automation degree of the slurry stirring device is further improved, and the slurry preparation efficiency is improved; in addition, the prepared mud can be conveyed to a long-distance and high-position mud pit to a certain extent by utilizing the high-speed impeller pump, and the field application range of the mud stirring device in steep mountain operation is expanded.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering geological drilling, and in particular relates to an automatic mud stirring device for geological drilling. Background Art

[0002] In geological drilling mud preparation technology, mud stirring devices are widely used, especially in the field of deep hole drilling in complex formations. Mud stirring devices are almost indispensable. However, conventional stirring devices also have some problems and shortcomings: (1) The structure is simple and the degree of automation is low. Conventional mud stirring devices require special personnel to manually feed materials, disperse cemented particles, and open and close valves to deliver slurry. Only after all the slurry in the barrel is drained can new materials be fed and the next cycle operation be carried out. The quality of the slurry prepared by this method is uneven, and a lot of manpower and material resources are wasted; (2) The risk of mechanical failure and accidents is high. Conventional mud stirring devices are equipped with multiple stirring shafts and stirring blades in the barrel for stirring. During the manual auxiliary stirring process, it is easy to cause mechanical failure or production accidents due to accidental contact with the stirring blades.

[0003] The patent with publication number CN212312367U discloses a rapid pulping machine, comprising a barrel, a stirring paddle extending into the barrel, a driving member for driving the stirring paddle to stir and mix the water and dry powder in the barrel, and a pump body. When the utility model is in use, the water and dry powder in the barrel are mixed under the stirring action of the stirring paddle, and the pump body acts at the same time, driving the water and dry powder to circulate in a closed loop. When flowing through the pump body, the rapidly rotating impeller in the pump body stirs the water and dry powder, thereby performing a double stirring and mixing of the water and dry powder. Although this patent uses a dual stirring assembly inside and outside the barrel, manual feeding is still required, and the cemented agglomerates cannot be removed in time during the mechanical stirring process. After each barrel of mud is prepared, the slurry delivery pipeline valve and the circulation pipeline valve still need to be manually opened and closed to deliver the slurry, and its pulping efficiency is still insufficient.

[0004] To this end, it is necessary to propose an automated mud stirring device for geological drilling. On the basis of integrating an auger-type automatic loader and auxiliary material conveying components, a high-speed impeller pump outside the barrel is used for circulating mud stirring, and it is precisely controlled by components such as CNC solenoid valves, thereby solving the shortcomings and defects of the existing technology. Summary of the Invention

[0005] The present invention provides an automated mud stirring device for geological drilling, which can solve the problems of current conventional stirring devices, such as simple structure, low degree of automation, insufficient stirring efficiency and high accident risk.

[0006] To solve the above problems, the present invention provides the following technical solutions:

[0007] An embodiment of the present invention provides an automated mud stirring device for geological drilling, comprising a mud barrel (100), an auger-type automatic loader (200) and an auxiliary material conveying assembly (300); the auxiliary material conveying assembly (300) is mounted on a barrel cover (104) on the top of the mud barrel (100) and is used to add a proportioned auxiliary material to the mud barrel (100); the auger-type automatic loader (200) is mounted on the outside of the mud barrel (100) and is used to automatically convey a mud proportioned main material to the inner cavity of the mud barrel (100); the mud barrel (100) is a main container of the stirring device, and under the drive of a high-speed impeller pump (101), water, a mud proportioned main material and a proportioned auxiliary material are circulated and stirred in the mud barrel and a closed loop.

[0008] In an optional embodiment of the present invention, a collecting port (105) is provided on the barrel cover (104), a circulating return port (106), a water inlet (107) and an overflow discharge port (108) are provided on the upper side of the mud barrel (100), and a first connecting pipe (102) is provided at the bottom of the mud barrel (100), and the first connecting pipe (102) extends radially outward from the mud barrel (100), and the outer end of the first connecting pipe (102) is connected to the water inlet end of the high-speed impeller pump (101). The water outlet of the high-speed impeller pump (101) is connected to the inlet of the three-way structure (109), the outlet of the three-way structure (109) away from the mud barrel (100) is connected to the high-level slurry delivery pipeline (112), and a second connecting pipe (103) is fixed to the outer wall of the mud barrel (100), the upper end of the second connecting pipe (103) is connected to the circulation return port (106), and the lower end of the second connecting pipe (103) is connected to the outlet on one side of the three-way structure (109).

[0009] According to an optional embodiment of the present invention, the auger-type automatic loader (200) includes a support frame (205), a main material barrel (209) is fixed on the support frame (205), a first conveying pipe (201) is obliquely arranged on the outer side of the support frame (205), a first conveying pipe feed port (206) is arranged on the upper side of the bottom end of the first conveying pipe (201), a first conveying pipe discharge port (207) is arranged on the lower side of the top end of the first conveying pipe (201), first bearings (203) are installed at both ends of the first conveying pipe (201), a first rotating shaft (202) is provided through the first bearing (203), a first auger blade (204) is provided on the first rotating shaft (202), the first auger blade (204) extends from the first conveying pipe feed port (206) to the first conveying pipe discharge port (207), and the top end of the first conveying pipe (201) is connected to the first speed regulating motor (208) through a fixed connecting plate (210).

[0010] In an optional embodiment of the present invention, the auxiliary material conveying assembly (300) is laterally provided with a second conveying pipe (301) fixed on a support seat (310), second bearings (302) are installed at both ends of the second conveying pipe (301), a second rotating shaft (303) is provided through the second bearing (302), a second auger blade (312) is provided on the second rotating shaft (303), one side of the second rotating shaft (303) is connected to a second speed regulating motor (308), an auxiliary material discharge port (307) is provided at the bottom of the second conveying pipe (301) on the side away from the second speed regulating motor (308), an auxiliary material hopper (309) is fixed on the upper part of the second conveying pipe (301), a third rotating shaft (306) is provided inside the auxiliary material hopper (309), and a stirring blade (311) is provided on the third rotating shaft (306).

[0011] In an optional embodiment of the present invention, the mud barrel (100) has a cylindrical barrel body, and multiple groups of spiral guide plates (114) are evenly arranged along the axial direction on the inner side wall of the barrel. The bottom of the mud barrel (100) is funnel-shaped, and a filter grid (113) is provided at the bottom funnel opening.

[0012] In an optional embodiment of the present invention, the circulating return port (106) is arranged tangentially to the wall of the mud barrel (100), and the water inlet (107) extends into the mud barrel (100) and then extends toward the bottom along the inner wall of the mud barrel (100).

[0013] In an optional embodiment of the present invention, a water inlet solenoid valve (116), a circulation pipeline solenoid valve (110) and a slurry delivery pipeline solenoid valve (111) are respectively installed on the water inlet pipeline of the mud barrel (100) and the two outlet pipelines of the three-way structure (109).

[0014] In an optional embodiment of the present invention, the first conveying pipe feed port (206) is connected to the discharge funnel port at the bottom of the mud barrel (100), and the first conveying pipe discharge port (206) and the auxiliary material discharge port (307) of the auxiliary material conveying assembly (300) are both located above the collection port (105) of the mud barrel (100).

[0015] In an optional embodiment of the present invention, a main sprocket (304) and a slave sprocket (305) are respectively fixed to the ends of the second rotating shaft (303) and the third rotating shaft (306) facing the second speed regulating motor (308), and the two are connected by a chain (313).

[0016] Compared with the prior art, the embodiment of the present invention provides an automated mud stirring device for geological drilling, which has the following effects: the present invention utilizes a high-speed impeller pump outside the barrel and connecting pipelines to perform mud bundling, stirring and circulation, thereby improving the quality of mud preparation and reducing operational safety risks. On this basis, the present invention integrates an auger-type automatic loader and an auxiliary material conveying assembly, with a first speed-regulating motor and a second speed-regulating motor as drive inputs. By adjusting the motor speed and using transmission components such as sprockets, auger blades, and stirring blades, dry powder materials can be quantitatively and automatically fed, effectively reducing the workload of manual feeding. By utilizing the system linkage control between an external water pump, a high-speed impeller pump, a speed-regulating motor, and the solenoid valves of each pipeline, the degree of automation of the mud stirring device is further improved, and the efficiency of mud preparation is improved. In addition, the present invention utilizes a high-speed impeller pump to transport the prepared mud to a long-distance, high-position mud pool to a certain extent, expanding the adaptability of the mud stirring device in steep mountainous operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic structural diagram of an automated mud stirring device for geological drilling provided in an embodiment of the present application.

[0019] Figure 2 A schematic structural diagram of a mud barrel provided in an embodiment of the present application.

[0020] Figure 3 This is a top view of an auger-type automatic loader provided in an embodiment of the present application.

[0021] Figure 4 for Figure 3 Cross-section of the medium auger automatic loader.

[0022] Figure 5 A top view of an auxiliary material delivery assembly provided in an embodiment of the present application.

[0023] Figure 6 for Figure 5 Cross-sectional view of the auxiliary material conveying component.

[0024] Description of reference numerals:

[0025] 100-mud barrel; 101-high-speed impeller pump; 102-first connecting pipe; 103-second connecting pipe; 104-barrel cover; 105-collection port; 106-circulation return port; 107-water inlet; 108-overflow discharge port; 109-three-way structure; 110-circulation pipeline solenoid valve; 111-slurry delivery pipeline solenoid valve; 112-high-level slurry delivery pipeline; 113-filter grid; 114-spiral guide plate; 115-mud barrel rack; 116-water inlet solenoid valve.

[0026] 200-auger type automatic loader; 201-first conveying pipe; 202-first rotating shaft; 203-first bearing; 204-auger blade; 205-support frame; 206-first conveying pipe inlet; 207-first conveying pipe outlet; 208-first speed regulating motor; 209-main material barrel; 210-fixed connecting plate.

[0027] 300-auxiliary material conveying assembly; 301-second conveying pipe; 302-second bearing; 303-second rotating shaft; 304-main sprocket; 305-slave sprocket; 306-third rotating shaft; 307-auxiliary material discharge port; 308-second speed regulating motor; 309-auxiliary material hopper; 310-support seat; 311-stirring blade; 312-second auger blade; 313-chain. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application. The terms "upper", "lower", "front", "rear", "left", "right", etc. used to describe the installation position or direction of the structure or parts of the present embodiment are based on the orientation of the given drawings. They are only for the convenience of expression to distinguish the relative positions of the various parts or directions, and do not represent the orientation of the device or functional parts of the present embodiment when in use.

[0029] like Figures 1-6 As shown, this embodiment provides an automated mud mixing device for geological drilling, comprising a mud barrel 100, an auger-type automatic loader 200, and an auxiliary material conveying assembly 300. The auxiliary material conveying assembly 300 is mounted on the barrel cover 104 on top of the mud barrel 100 and is used to add the auxiliary materials to the mud barrel 100. The auger-type automatic loader 200 is mounted on the outside of the mud barrel 100 and is used to automatically convey the main mud material to the inner cavity of the mud barrel 100. The mud barrel 100 is the main container of the mixing device. Driven by a high-speed impeller pump 101, water, the main mud material, and the auxiliary materials are circulated and stirred in the mud barrel and closed loop.

[0030] like Figure 1 and Figure 2 As shown, the top of the mud barrel 100 is provided with a barrel cover 104, and the barrel cover 104 is provided with a collection port 105. The side wall of the mud barrel 100 is provided with a circulation return port 106, a water inlet 107 and an overflow discharge port 108, and the opening of the overflow discharge port 108 is slightly higher than the return port 106 and slightly lower than the water inlet 107. The bottom of the mud barrel 100 is fixedly connected to a mud barrel rack 115.

[0031] The mud barrel 100 has a cylindrical barrel body and a funnel-shaped bottom. A filter grid 113 is provided at the funnel mouth, which can effectively filter and intercept impurities when the mud liquid circulates. A first connecting pipe 102 is provided at the bottom of the funnel of the mud barrel 100, extending radially outward. The outer end of the first connecting pipe 102 is connected to the water inlet of the high-speed impeller pump 101, and the water outlet of the high-speed impeller pump 101 is connected to the inlet of the three-way structure 109. The outlet of the three-way structure 109 facing away from the mud barrel 100 is connected to the high-level slurry delivery pipeline 112. A second connecting pipe 103 is fixed to the outer wall of the mud barrel 100. The upper end of the second connecting pipe 103 is connected to the circulation return port 106, and the lower end of the second connecting pipe 103 is connected to the outlet on the other side of the three-way structure 109.

[0032] The two ends of the first connecting pipe 102 are fixedly connected to the funnel mouth at the bottom end of the mud barrel 100 and the high-speed impeller pump 101 through flanges, and the two ends of the second connecting pipe 103 are fixedly connected to the circulation return port 106 and the outlet on one side of the three-way structure 109 through flanges, and the circulation return port 106 is arranged tangent to the wall of the mud barrel, and the water inlet 107 extends into the mud barrel 100 and extends to the bottom along the inner wall.

[0033] The mud barrel water inlet 107 and the two outlet pipes of the three-way structure 109 are respectively equipped with an inlet solenoid valve 116, a circulation pipeline solenoid valve 110, and a slurry delivery pipeline solenoid valve 111. By switching the circulation pipeline solenoid valve 110 and the slurry delivery pipeline solenoid valve 111 on and off through the control system, conventional high-speed circulation slurrying and long-distance, high-position slurry delivery can be carried out.

[0034] Thus, a closed circulation loop is formed, consisting of the inner cavity of the mud barrel 100, the first connecting pipe 102, the high-speed impeller pump 101, the three-way structure 109, the second connecting pipe 103, and the circulation return port 106. During use, the high-speed impeller pump 101 drives the water and dry powder to flow in the circulation loop, and uses the rapidly rotating impeller in the pump body to stir the water and dry powder. Preferably, multiple groups of spiral guide plates 114 are evenly arranged along the axial direction on the inner side wall of the mud barrel 100. Under the dual action of the spiral guide plates 114 and the high-speed impeller pump 101, the mud inside the mud barrel 100 can rotate to form a vortex, thereby achieving sufficient mixing of the water and dry powder and improving the uniformity of the slurry.

[0035] like Figure 1 、 Figure 3 、 Figure 4 As shown, an auger-type automatic loader 200 can be used for automatic transportation of mud proportioning materials, including a support frame 205, a main material barrel 209 is fixed on the support frame 205, a first conveying pipe 201 is obliquely arranged on the outer side of the support frame 205, a first conveying pipe feed port 206 is arranged on the upper side of the bottom end of the first conveying pipe 201, and a first conveying pipe discharge port 207 is arranged on the lower side of the top end of the first conveying pipe 201; first bearings 203 are installed at both ends of the first conveying pipe 201, a first rotating shaft 202 is provided through the first bearing 203, a first auger blade 204 is provided on the first rotating shaft 202, and the first auger blade 204 extends from the first conveying pipe feed port 206 to the first conveying pipe discharge port 207.

[0036] The top of the first conveying pipe 201 is connected to the first speed regulating motor 208 through a fixed connecting plate 210, the first conveying pipe feed port 206 is connected to the discharge funnel port at the bottom of the main material barrel 209, and the first conveying pipe discharge port 206 is located above the collection port 105 of the mud barrel.

[0037] like Figure 1 、 Figure 5 and Figure 6 As shown, the auxiliary material conveying assembly 300 includes a support base 310, a second conveying pipe 301 is horizontally arranged on the support base 310, second bearings 302 are installed at both ends of the second conveying pipe 301, a second rotating shaft 303 is provided through the second bearing 302, a second auger blade 312 is provided on the second rotating shaft 303, and one side of the second rotating shaft 303 is connected to the second speed-regulating motor 308 fixed on the support base 310; an auxiliary material discharge port 307 is provided at the bottom of the second conveying pipe 301 on the side facing away from the second speed-regulating motor 308, an auxiliary material hopper 309 is fixed to the top of the second conveying pipe close to the second speed-regulating motor 308, a third rotating shaft 306 is provided inside the auxiliary material hopper, and a stirring blade 311 is provided on the third rotating shaft 306.

[0038] A main sprocket 304 and a slave sprocket 305 are respectively fixed to the ends of the second rotating shaft 303 and the third rotating shaft 306 facing the second speed-regulating motor 308, and the two are connected by a chain 313. The second speed-regulating motor 308 drives the second rotating shaft 303 and the main sprocket 304 thereon to rotate, and transmits power to the slave sprocket 305 via the chain 313, which in turn drives the third rotating shaft 306 and the second stirring blade 311 thereon to rotate, thereby stirring the dry powder material that may have agglomerated or clogged in the auxiliary hopper 309 into the second conveying pipe 301.

[0039] The auxiliary material delivery assembly 300 is integrally mounted on the cover 104 of the mud barrel 100, with its auxiliary material discharge port 307 located above the mud barrel's material collection port 105. If multiple auxiliary materials need to be added during the mud mixing process, multiple sets of auxiliary material delivery assemblies 300 can be configured.

[0040] The working principle of an automated mud mixing device for geological drilling is:

[0041] During the initial operation, first inject enough initial water for circulation pumping into the mud barrel 100 through the water inlet 107, and determine the operating parameters such as the circulation stirring amount, water injection time, dry powder material conveying time, circulation stirring time, the feeding speed of the first speed regulating motor 208 and the second speed regulating motor 308, the water inlet flow of the external water pump through the water inlet solenoid valve 116, and the discharge flow of the prepared mud through the solenoid valve 111 of the slurry delivery pipeline through the external pipeline. Connect the external pipeline, and add enough mud proportioning main materials and auxiliary materials into the main material barrel 209 and the auxiliary material hopper 309 respectively.

[0042] During high-speed circulation pulping, the control system opens the circulation pipeline electromagnetic valve 110 channel and closes the pulp delivery pipeline electromagnetic valve 111 channel to form a complete closed loop, and synchronously starts the first speed regulating motor 208, the second speed regulating motor 308, the high-speed impeller pump 101 and the external water pump. At this time, the first speed regulating motor 208 drives the first rotating shaft 202 and the auger blade 204 thereon to rotate, and the main material in the main material barrel 209 is transported from bottom to top to the collecting port 105. At the same time, the main sprocket 3 04. With the cooperation of the chain 313, the slave sprocket 305, the third rotating shaft 306 and other components, the second speed-regulating motor 308 drives the second rotating shaft 303 and the second auger blade 312 to rotate, and the auxiliary material in the auxiliary material hopper 309 is horizontally transported to the collecting port 105 and falls into the mud barrel 100. The high-speed impeller pump 101 drives the water and dry powder to circulate in the closed loop. When the mixed material flows through the high-speed impeller pump 101, the rapidly rotating impeller in the pump body quickly and fully stirs the mixed material. When the flow through the water inlet solenoid valve 116 reaches the set value, the control system first automatically closes the water inlet solenoid valve 116 channel and the external water pump power supply; when the set dry powder material delivery time is reached, the control system then turns off the first speed regulating motor 208 and the second speed regulating motor 308 and enters the pure stirring mode; when the circulation stirring time is reached, the control system turns off the high-speed impeller pump 101 and the circulation pipeline solenoid valve 110 channel, opens the slurry delivery pipeline solenoid valve 111 channel and enters the slurry delivery mode; when the prepared mud discharge flow through the slurry delivery pipeline solenoid valve 111 reaches the set value, the control system automatically enters the next slurrying cycle operation.

[0043] If long-distance and high-position slurry delivery is required, when the circulation stirring time is reached, only the circulation pipeline solenoid valve 110 channel is closed and the slurry delivery pipeline solenoid valve 111 channel is opened, and the impeller driving force of the high-speed impeller pump 101 is used to transport the prepared mud to the designated area.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated mud stirring device for geological drilling, characterized in that: The invention comprises a mud barrel (100), an auger-type automatic loader (200) and an auxiliary material conveying assembly (300); the auxiliary material conveying assembly (300) is installed on a barrel cover (104) on the top of the mud barrel (100) and is used to add a proportioning auxiliary material to the mud barrel (100); the auger-type automatic loader (200) is set outside the mud barrel (100) and is used to automatically convey the mud proportioning main material to the inner cavity of the mud barrel (100); the mud barrel (100) is the main container of the stirring device, and under the drive of a high-speed impeller pump (101), water, the mud proportioning main material and the proportioning auxiliary material are circulated and stirred in the mud barrel and the closed loop.

2. The automatic mud stirring device for geological drilling according to claim 1, characterized in that: The barrel cover (104) is provided with a material collection port (105), and the upper side of the mud barrel (100) is provided with a circulation return port (106), a water inlet (107) and an overflow discharge port (108). The bottom of the mud barrel (100) is provided with a first connecting pipe (102), and the first connecting pipe (102) extends outward along the radial direction of the mud barrel (100). The outer end of the first connecting pipe (102) is connected to the water inlet end of the high-speed impeller pump (101). The water outlet of the high-speed impeller pump (101) is connected to the inlet of the three-way structure (109), and the outlet of the three-way structure (109) on the side away from the mud barrel (100) is connected to the high-level slurry delivery pipeline (112). A second connecting pipe (103) is fixed to the outer wall of the mud barrel (100), the upper end of the second connecting pipe (103) is connected to the circulation return port (106), and the lower end of the second connecting pipe (103) is connected to the outlet on the other side of the three-way structure (109).

3. The automatic mud stirring device for geological drilling according to claim 2, characterized in that: The auger-type automatic loader (200) comprises a support frame (205), a main material barrel (209) is fixed on the support frame (205), a first conveying pipe (201) is obliquely arranged on the outer side of the support frame (205), a first conveying pipe feed port (206) is arranged on the upper side of the bottom end of the first conveying pipe (201), a first conveying pipe discharge port (207) is arranged on the lower side of the top end of the first conveying pipe (201), first bearings (203) are installed at both ends of the first conveying pipe (201), a first rotating shaft (202) is provided passing through the first bearing (203), a first auger blade (204) is provided on the first rotating shaft (202), the first auger blade (204) extends from the first conveying pipe feed port (206) to the first conveying pipe discharge port (207), and the top end of the first conveying pipe (201) is connected to the first speed regulating motor (208) via a fixed connecting plate (210).

4. The automatic mud stirring device for geological drilling according to claim 3, characterized in that: The auxiliary material conveying assembly (300) is laterally provided with a second conveying pipe (301) fixed on a support seat (310), second bearings (302) are installed at both ends of the second conveying pipe (301), a second rotating shaft (303) is provided through the second bearing (302), a second auger blade (312) is provided on the second rotating shaft (303), one side of the second rotating shaft (303) is connected to a second speed regulating motor (308), an auxiliary material discharge port (307) is provided at the bottom of the second conveying pipe (301) on the side away from the second speed regulating motor (308), an auxiliary material hopper (309) is fixed on the upper part of the second conveying pipe (301), a third rotating shaft (306) is provided inside the auxiliary material hopper (309), and a stirring blade (311) is provided on the third rotating shaft (306).

5. The automatic mud stirring device for geological drilling according to claim 4, characterized in that: The mud barrel (100) has a cylindrical barrel body, and multiple groups of spiral guide plates (114) are evenly arranged along the axial direction on the inner side wall of the barrel. The bottom of the mud barrel (100) is funnel-shaped, and a filter grid (113) is arranged at the bottom funnel opening.

6. The automatic mud stirring device for geological drilling according to claim 5, characterized in that: The circulating return port (106) is arranged tangentially to the wall of the mud barrel (100), and the water inlet (107) extends into the mud barrel (100) and then extends toward the bottom along the inner wall of the mud barrel (100).

7. The automatic mud stirring device for geological drilling according to claim 6, characterized in that: The water inlet pipeline of the mud barrel (100) and the two outlet pipelines of the three-way structure (109) are respectively installed with a water inlet solenoid valve (116), a circulation pipeline solenoid valve (110) and a slurry delivery pipeline solenoid valve (111).

8. The automatic mud stirring device for geological drilling according to claim 7, characterized in that: The first conveying pipe feed port (206) is connected to the discharge funnel port at the bottom of the mud barrel (100), and the first conveying pipe discharge port (206) and the auxiliary material discharge port (307) of the auxiliary material conveying assembly (300) are both located above the collection port (105) of the mud barrel (100).

9. The automatic mud stirring device for geological drilling according to claim 8, characterized in that: A main sprocket (304) and a slave sprocket (305) are respectively fixed to the ends of the second rotating shaft (303) and the third rotating shaft (306) facing the second speed regulating motor (308), and the two are connected by a chain (313).

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