Energy-saving anti-cavitation reciprocating slurry pump for well drilling

Abstract

The invention belongs to the technical field of mud pump cavitation prevention, and discloses an energy-saving well drilling cavitation prevention reciprocating mud pump which comprises a mud pump body, water pipes are fixedly installed on pipe openings in the two ends of the mud pump body, and a mud storage tank is fixedly connected to the other end of one water pipe. A base is fixedly connected to the outer wall, close to the bottom, of the slurry storage tank, the side wall of the top end of the base and the bottom end of the slurry pump body are fixedly installed, and a cavitation prevention part is further arranged on the base. A closed-loop treatment system is composed of a rubber disc, a one-way screw, a cutting blade, a brush groove plate and a filter plate, the rubber disc stretches and retracts in a piston cylinder in a reciprocating mode to generate negative pressure, slurry is sucked through a suction pipe and a ball shaft suction hopper, meanwhile, the one-way screw is driven to drive the cutting blade to rotate, and rock debris, mud blocks and bubbles in the slurry are sheared and broken; crushed slurry flows through the rotating brush groove plate and the movable filter plate, double filtration is achieved, and the cavitation hidden danger caused by impurity blockage and bubble retention of a traditional pump body is avoided.

Description

Technical Field

[0001] This invention belongs to the field of anti-cavitation technology for mud pumps, specifically an energy-saving anti-cavitation reciprocating mud pump for drilling. Background Technology

[0002] Mud pump is a broad term for a type of pump. Different regions and customs may lead to different pump types. The mud pump described in this entry refers to a type of pump in most senses, specifically the mud pump used in the oil drilling field. In fact, the terms mud pump, sewage pump, slurry pump, and other non-clean water pumps are sometimes used interchangeably with mud pump.

[0003] Cavitation is also a major problem faced by traditional mud pumps. In the process of stirring mud, gas will inevitably be generated and escape to form bubbles, which will damage the pump's flow-through components. In addition, during drilling, when the drill bit stirs the underground rock formations, rock cuttings (i.e. mud blocks) will be generated. At the same time, if the drilling encounters formations containing oil, gas or water, these substances will enter the mud and circulate back out of the wellhead, forming oil slicks, bubbles, etc. This leads to frequent cavitation in traditional mud pumps, which seriously affects the service life and working efficiency of the pump. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides an energy-saving, cavitation-resistant reciprocating mud pump for drilling.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving drilling anti-cavitation reciprocating mud pump, comprising a mud pump body, water pipes fixedly installed at both ends of the mud pump body, a mud storage tank fixedly connected to the other end of one of the water pipes, a base fixedly connected to the outer wall of the mud storage tank near the bottom, and the top side wall of the base being fixedly installed to the bottom end of the mud pump body, and the base also having an anti-cavitation part;

[0006] The anti-cavitation section includes a one-way screw, on which a cutting blade is threadedly connected. A brush groove plate is also slidably connected to the rod of the one-way screw, and a filter plate is fixedly connected to it. This is used to crush and filter the slurry that is collected in a cycle. The one-way screw is equipped with a moving negative pressure structure to drive the slurry to be passively treated, thus preventing cavitation.

[0007] The anti-cavitation section also includes a bidirectional threaded rod, on both sides of which are threadedly connected to striking ball plates. Both striking ball plates can intermittently fit and connect with the outer surface of the mud storage tank. A rotary telescopic structure is provided between the bidirectional threaded rod and the movable negative pressure structure to drive the bidirectional threaded rod to perform repeated reciprocating motion.

[0008] Preferably, the movable negative pressure structure includes a rubber disc, one end of the outer wall of the rubber disc is fixedly connected to the rod of a one-way screw, a piston cylinder is slidably connected to the outer wall of the rubber disc, a suction tube is threaded through one end of the piston cylinder, and a ball shaft suction cup is movably connected to the other end of the suction tube.

[0009] Preferably, a limiting plate is slidably connected through the rod of the unidirectional screw, the limiting plate and one end of the cutting blade are movably sleeved together, and the bottom end of the limiting plate is fixedly connected to the bottom inner wall of the extraction tube, and a T-shaped block is fixedly connected to the other end of the cutting blade.

[0010] Preferably, two arc discs are movably sleeved on the rod body of the unidirectional screw. The two arc discs are respectively fixedly connected to the limiting plate and the T-shaped block. A folding soft tube is movably sleeved on the T-shaped block. Multiple U-shaped rods are fixedly connected around the T-shaped block. The other end of each U-shaped rod is fixedly connected to the plate frame of the brush groove plate.

[0011] Preferably, the outer wall of the brush groove plate and the inner wall of the suction tube are fixedly connected, and the filter plate and the inner wall of the suction tube are slidably connected in contact.

[0012] Preferably, a conveying pipe is fixedly connected to the top cylinder of the piston cylinder, a connecting groove plate is fixedly connected to the bottom outer wall of the piston cylinder, the bottom end of the connecting groove plate is fixedly connected to the top outer wall of the base, a one-way valve for controlling the one-way flow of liquid is fixedly connected to both the conveying pipe and the suction pipe, and the top end of the conveying pipe is fixedly connected to the bottom end of the mud storage tank.

[0013] Preferably, the rotary telescopic structure includes a support plate fixedly connected to the base, a motor fixedly connected to one end of the support plate, a T-shaped cylinder fixedly connected to the motor shaft, a rotating cylinder fixedly connected to the T-shaped cylinder, an oblique arc groove on the outer wall of the rotating cylinder, and a ball rod rotatably connected to the top of the oblique arc groove.

[0014] Preferably, a bent rod is fixedly connected to the top of the cue stick, a sleeve plate is slidably connected to the body of the bent rod, the body of the sleeve plate is fixedly connected to the top of the support plate, and the other end of the bent rod is fixedly connected to the rubber disc.

[0015] Preferably, a cam is fixedly connected to the T-shaped cylinder, a stop rod is slidably connected to the outer wall of the cam, a second sleeve plate is slidably connected to one end of the stop rod, the plate of the second sleeve plate is fixedly connected to the outer wall of the support plate, and an L-shaped plate is fixedly connected to the other end of the stop rod.

[0016] Preferably, a spring is fixedly connected between the L-shaped plate and the second sleeve plate, the L-shaped plate is threadedly connected to one side of the bidirectional threaded rod, a sleeve rod is movably sleeved on the bidirectional threaded rod, the sleeve rod is fixedly connected to the outer wall of the mud storage tank, and the plates of the two L-shaped plates are respectively fixedly connected to the L-shaped plate and the outer wall of the mud storage tank with telescopic rods.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] This invention utilizes a closed-loop processing system consisting of a rubber disc, a one-way screw, cutting blades, a brush groove plate, and a filter plate. The reciprocating expansion and contraction of the rubber disc within the piston cylinder generates negative pressure, which is used to draw mud through a suction pipe and a ball shaft suction bucket. Simultaneously, the one-way screw drives the cutting blades to rotate, shearing and breaking down rock fragments, mud lumps, and air bubbles in the mud. The broken mud then flows through the rotating brush groove plate and the moving filter plate, achieving dual filtration. The filter plate intercepts particulate impurities, while the rotating brush groove plate cleans the filter plate's through-holes and further breaks down air bubbles, thus solving the cavitation hazards caused by impurity blockage and air bubble retention in traditional pumps.

[0019] This invention forms a vibration defoaming mechanism through a bidirectional threaded rod, a striking ball plate, and a rotary telescopic drive assembly. The motor drives the L-shaped plate to move back and forth via a cam and a stop rod, causing the bidirectional threaded rod to rotate and drive the striking ball plate to alternately strike the outer wall of the mud storage tank. The vibration causes the bubbles in the mud to collide, merge, float and burst, which is especially effective for the small bubbles that are easy to accumulate in the discharge area of ​​the storage tank, thus improving the defoaming efficiency. Attached Figure Description

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

[0021] Figure 2 This is a schematic diagram of the overall planar structure of the present invention;

[0022] Figure 3 This is a partial cross-sectional structural diagram of the anti-cavitation part of the present invention;

[0023] Figure 4 For the present invention Figure 3 A magnified view of the structure at point A in the middle;

[0024] Figure 5 This is a partial cross-sectional structural diagram of the piston cylinder and the extraction tube of the present invention;

[0025] Figure 6 This is a partial cross-sectional planar structural diagram of the piston cylinder and the extraction tube of the present invention;

[0026] Figure 7 This is a schematic diagram of the overall partial structure of the present invention;

[0027] Figure 8This is a schematic diagram of the overall structure of the folding flexible tube of the present invention.

[0028] In the picture:

[0029] 1. Mud pump body; 101. Water pipe; 102. Mud storage tank; 103. Base;

[0030] 2. Anti-cavitation section; 201. Support plate; 202. Motor; 203. T-shaped cylinder; 204. Rotary cylinder; 205. Inclined arc groove; 206. Ball rod; 207. Sleeve plate one; 208. Bending rod; 209. Rubber disc; 210. Piston cylinder; 211. Connecting groove plate; 212. Pulling pipe; 213. Ball shaft pull bucket; 214. One-way screw; 215. Cutting blade; 216. Limiting plate; 17. T-block; 218. Arc plate; 219. Folding soft cylinder; 220. U-shaped rod frame; 221. Brush groove plate; 222. Filter plate; 223. Pipe; 224. One-way valve; 2241. Cam; 225. Abutment rod; 226. L-shaped plate; 227. Sleeve plate two; 228. Spring; 229. Two-way threaded rod; 230. Sleeve rod; 231. Striking ball plate; 232. Telescopic rod. Detailed Implementation

[0031] 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.

[0032] like Figures 1 to 8 As shown, the present invention provides an energy-saving drilling anti-cavitation reciprocating mud pump, including a mud pump body 1, water pipes 101 are fixedly installed on both ends of the mud pump body 1, and a mud storage tank 102 is fixedly connected to the other end of one water pipe 101. A base 103 is fixedly connected to the outer wall of the mud storage tank 102 near the bottom, and the top side wall of the base 103 is fixedly installed to the bottom end of the mud pump body 1. The base 103 is also provided with an anti-cavitation part 2.

[0033] The anti-cavitation section 2 includes a one-way screw 214, a cutting blade 215 threadedly connected to the body of the one-way screw 214, a brush groove plate 221 slidably connected to the body of the one-way screw 214, and a filter plate 222 fixedly connected to the body of the one-way screw 214, for crushing and filtering the slurry collected in circulation. The one-way screw 214 is equipped with a moving negative pressure structure to drive the slurry passive treatment and prevent cavitation.

[0034] The anti-cavitation section 2 also includes a bidirectional threaded rod 229. Both sides of the bidirectional threaded rod 229 are threaded with striking ball plates 231. Both striking ball plates 231 can intermittently fit and connect with the outer surface of the mud storage tank 102. A rotary telescopic structure is provided between the bidirectional threaded rod 229 and the movable negative pressure structure to drive the bidirectional threaded rod 229 to perform repeated reciprocating motion.

[0035] Using the above scheme: When the rubber disc 209 is passively pulled, the suction force generated will be used to recover and suck up the mud through the suction pipe 212 and the ball shaft suction bucket 213. At the same time, the translation of the rubber disc 209 will also drive the one-way screw 214 to move, thereby driving the cutting blade 215, which is movably sleeved on the limiting plate 216, to rotate, thereby realizing the shearing and crushing of the pumped circulating mud, avoiding rock debris and mud blocks from clogging the pipe or affecting the flow rate and flow conditions. The mud fluid passing through the cutting blade 215 will flow through the brush groove plate 221 and be further screened by the filter plate 222 to filter out the rock debris and air bubbles present in the mud.

[0036] The translation of the L-shaped plate 226 will cause the bidirectional threaded rod 229 to rotate. As a result, the rotation under the limit of the sleeve rod 230 will drive the two striking plates 231 to move in opposite directions. During the movement, the corresponding telescopic rod 232 will be stretched, which will guide and limit its movement. Thus, the repeated driving of the L-shaped plate 226 will cause the two striking plates 231 to repeatedly strike the mud storage tank 102, which will vibrate the feeding part. The vibration will cause the air bubbles in the mud to collide and squeeze each other, destroying its stable polyhedral structure.

[0037] The movable negative pressure structure includes a rubber disc 209. One end of the outer wall of the rubber disc 209 is fixedly connected to the rod of a one-way screw 214. A piston cylinder 210 is slidably connected to the outer wall of the rubber disc 209. A suction tube 212 is threadedly connected to one end of the piston cylinder 210. A ball-shaft suction cup 213 is movably connected to the other end of the suction tube 212. A limit plate 216 is slidably connected to the rod of the one-way screw 214. The limit plate 216 and one end of the cutting blade 215 are movably sleeved together, and the bottom end of the limit plate 216 is fixedly connected to the bottom inner wall of the suction tube 212. A T-shaped block 217 is fixedly connected to the other end of the cutting blade 215. Two arc discs 218 are movably sleeved on the rod of the one-way screw 214. The two arc discs 218 are respectively connected to the limit plate 216 and the T-shaped block 217. The components are connected and movably sleeved with folding flexible cylinders 219. Multiple U-shaped rods 220 are fixedly connected around the T-shaped block 217. The other end of each U-shaped rod 220 is fixedly connected to the plate frame of the brush groove plate 221. The outer wall of the brush groove plate 221 is fixedly connected to the inner wall of the suction pipe 212. The filter plate 222 and the inner wall of the suction pipe 212 are slidably connected. A conveying pipe 223 is fixedly connected through the top cylinder of the piston cylinder 210. A connecting groove plate 211 is fixedly connected to the bottom outer wall of the piston cylinder 210. The bottom end of the connecting groove plate 211 is fixedly connected to the top outer wall of the base 103. One-way valves 224 for controlling the unidirectional flow of liquid are fixedly connected to the pipes of both the conveying pipe 223 and the suction pipe 212. The top pipe of the conveying pipe 223 is fixedly connected through the bottom tank of the mud storage tank 102.

[0038] The above solution is adopted: such as Figure 5 and Figure 6As shown, when the rubber disc 209 is passively pulled, it generates a suction force that is used to recycle and suck up the mud through the suction pipe 212 and the ball shaft suction bucket 213. At the same time, the translation of the rubber disc 209 will also drive the one-way screw 214 to move, thereby driving the cutting blade 215, which is movably sleeved on the limiting plate 216, to rotate. This achieves shearing and crushing of the pumped circulating mud, preventing rock debris and mud from clogging the pipe or affecting the flow rate and flow conditions (the threaded pair between the one-way screw 214 and the cutting blade 215 can adopt a non-self-locking thread design with a large lead and low friction coefficient). Furthermore, the translation of the one-way screw 214 will also drive the two arc disks 218 to form a squeezing and stretching force on the corresponding folding soft cylinders 219 on the limiting plate 216 and the T-block 217. When the one-way screw 214 and the cutting blade 215 are engaged in threaded rotation, the meshing point between the two is always protected and sealed, preventing the mud from affecting the meshing rotation force, thus ensuring the operation of the relevant structural equipment. The mud fluid passing through the cutting blade 215 will flow through the brush groove plate 221 and be further screened by the filter plate 222 to filter out the particle rock debris and air bubbles in the mud. At the same time, the passive translation of the unidirectional screw 214 will drive the filter plate 222 to move synchronously. This allows the filter plate 222 to contact the brush groove plate 221 during the movement, thus clearing the filter holes on its surface. Simultaneously, because multiple U-shaped rods 220 fixed to the T-shaped block 217 are installed on the brush groove plate 221, when the cutting blade 215 drives the T-shaped block 217 to rotate, the brush groove plate 221 fixed to the T-shaped block 217 by the U-shaped rods 220 will also rotate at the same time, thus achieving a rotary cleaning of the filter plate 222. And it pre-breaks the presence of air bubbles (that is, during this operation, when the one-way screw 214 moves axially under the drive of the rubber disc 209, it generates rotational motion at the same time through the threaded engagement with the cutting blade 215. This allows it to drive the cutting blade 215 to rotate and shear and break large-sized rock fragments in the recycled mud, avoiding pipeline blockage. It can also drive the filter plate 222 fixed on it to perform reciprocating motion filtration through its own axial movement, intercepting fine particles; at the same time, the rotation of the cutting blade 215 also drives the brush groove plate 221 to rotate through the T-shaped block 217 and the U-shaped rod frame 220, forming reverse scraping and cleaning of the filter plate 222, effectively preventing filter hole blockage).

[0039] The rotating telescopic structure includes a support plate 201 fixedly connected to the base 103. A motor 202 is fixedly connected to one end of the support plate 201. A T-shaped cylinder 203 is fixedly connected to the shaft of the motor 202. A rotating cylinder 204 is fixedly connected to the cylinder body of the T-shaped cylinder 203. An oblique arc groove 205 is provided on the outer wall of the rotating cylinder 204. A ball rod 206 is rotatably connected to the top of the oblique arc groove 205. A bent rod 208 is fixedly connected to the top of the ball rod 206. A sleeve plate 207 is slidably connected to the body of the bent rod 208. The body of the sleeve plate 207 is fixedly connected to the top of the support plate 201. The other end of the bent rod 208 is fixedly connected to the rubber disc 209.

[0040] A cam 2241 is fixedly connected to the T-shaped cylinder 203. A stop rod 225 is slidably connected to the outer wall of the cam 2241. A sleeve plate 227 is slidably connected to one end of the stop rod 225. The plate of the sleeve plate 227 is fixedly connected to the outer wall of the support plate 201. An L-shaped plate 226 is fixedly connected to the other end of the stop rod 225. A spring 228 is fixedly connected between the L-shaped plate 226 and the sleeve plate 227. The L-shaped plate 226 is threadedly connected to one side of the double-threaded rod 229. A sleeve rod 230 is movably sleeved on the double-threaded rod 229. The rod of the sleeve rod 230 is fixedly connected to the outer wall of the mud storage tank 102. The plates of the two L-shaped plates 226 are respectively fixedly connected to the L-shaped plate 226 and the outer wall of the mud storage tank 102 with telescopic rods 232.

[0041] Using the above solution: Start the motor 202 installed on the support plate 201, causing it to drive the T-shaped cylinder 203, the rotating cylinder 204, and the inclined arc groove 205 on the rotating cylinder 204 to rotate together, as shown... Figure 4 As shown, the rotating drum 204 causes the cue stick 206 to move along the path of the inclined arc groove 205. This passive movement of the cue stick 206 also simultaneously drives the bent rod 208. The movement of the bent rod 208 is guided by the sleeve plate 207, causing the cue stick 206 and the bent rod 208 to move passively horizontally. Thus, through the continuous passive rotation of the drum 204, the bent rod 208 is indirectly subjected to continuous passive reciprocating translation, causing the bent rod 208 to repeatedly extend and retract the rubber disc 209 within the piston cylinder 210. This results in repeated negative pressure within the inner cavity of the piston cylinder 210. Figure 5 As shown, when the rubber disc 209 passively generates extrusion pressure within the piston cylinder 210, it will output the previously pumped mud from the delivery pipe 223 and guide it into the mud storage tank 102, as... Figure 2 As shown, the connection orientation between the pipeline 223 and the mud storage tank 102 ensures that the introduced mud enters the mud storage tank 102 smoothly, preventing air bubbles from colliding with the mud already present in the tank. Figure 4 and Figure 7As shown, the rotation of the T-shaped cylinder 203 also drives the cam 2241 to rotate. In its rotating state, the cam 2241 repeatedly pushes against the abutment 225, causing it to translate at the upper limit of the sleeve 227, pushing the L-shaped plate 226. This process stretches the spring 228, causing it to deform. The presence of the spring 228 ensures that when the cam 2241 does not contact the abutment 225, it drives the abutment 225 to reset. The translation of the L-shaped plate 226 causes the bidirectional threaded rod 229 to rotate, thus rotating under the limit of the sleeve 230. The state will cause the two striking plates 231 to move in opposite directions, and during the movement, the corresponding telescopic rods 232 will be stretched, which will guide and limit the movement. This, driven repeatedly by the L-shaped plate 226, will cause the two striking plates 231 to repeatedly strike the mud storage tank 102, vibrating the feeding area. This vibration will cause the air bubbles in the mud to collide and compress, disrupting their stable polyhedral structure and causing them to burst. Furthermore, the vibration will reduce the friction between mud particles, causing small bubbles to merge into larger bubbles. The bubbles rise to the surface and are discharged, thereby reducing air bubbles in the mud and improving the overall service life of the pump body. (It should be noted that, specifically, the striking action of the striking plate 231 aims to generate low-frequency mechanical waves that propagate through the tank wall and mud medium of the mud storage tank 102. This low-frequency vibration can effectively overcome the apparent viscosity and yield stress of the mud, allowing the suspended microbubbles to gain kinetic energy, thereby increasing the probability of collision between bubbles and promoting their merging into larger bubbles. Since buoyancy is proportional to the cube of the bubble diameter, the merged large bubbles will quickly rise to the liquid surface and burst, thus achieving efficient defoaming. The striking frequency is controlled by the speed of the motor 202. By setting the frequency range, the inherent frequency of the mud storage tank 102 structure can be effectively avoided to prevent resonance. The low-frequency mechanical waves generated by the striking are transmitted into the mud, which can both promote the collision, merging, and escape of internal microbubbles through physical effects, fundamentally reducing cavitation sources, and also create periodic disturbances on the tank wall of the mud storage tank 102 to prevent mud deposition and scaling, maintaining the uniformity and fluidity of the mud.)

[0042] In summary, the above-mentioned methods remove large particles of impurities by cutting and crushing, thus preventing them from impacting and wearing down the pump body's flow channels. The combination of dual filtration and vibration defoaming reduces the air content of the mud, minimizing cavitation damage caused by the rupture of bubbles in the high-pressure zone inside the pump, and extending the lifespan of key components such as the impeller and pump casing.

[0043] One point to add is that the connection between the piston cylinder 210 and the extraction tube 212 is designed to facilitate subsequent disassembly of both for cleaning and maintenance of the relevant structures.

[0044] The integrated device significantly reduces the flow resistance of the mud by crushing rock debris and filtering particles. This reduces the pipeline head loss that the mud pump body 1 needs to overcome when conveying the same flow rate of mud, resulting in a decrease in the drive motor current of the mud pump body 1 and achieving energy savings during operation. Furthermore, in actual use, the integrated device reduces the air content of the mud, minimizing cavitation damage caused by the collapse of air bubbles in the high-pressure zone within the pump. This prevents a sharp drop in pump efficiency due to cavitation (traditional pumps can experience efficiency drops of 5%-15% under severe cavitation), ensuring that the mud pump body 1 always operates in the high-efficiency range. Simultaneously, it significantly reduces downtime maintenance energy consumption and component replacement costs caused by cavitation damage.

[0045] The working principle and usage process of this invention are as follows: During drilling, the reciprocating mud pump body 1, operating normally, delivers mud into the borehole. The surface flushing medium, water, mud, or polymer flushing fluid, under a certain pressure, is directly sent to the bottom of the drill bit through a high-pressure hose, a faucet, and the center hole of the drill string. This cools the drill bit, removes the cut rock cuttings, and transports them to the surface. The mud mixture brought to the surface can activate the motor 202 installed on the support plate 201, causing it to rotate the T-shaped cylinder 203, the rotating cylinder 204, and the inclined arc groove 205 on the rotating cylinder 204. The rotating cylinder 203 rotates... 4. This causes the cue stick 206 to move along the path of the inclined arc groove 205. The passive movement of the cue stick 206 also drives the bent rod 208. The movement of the bent rod 208 is guided by the sleeve plate 207, causing the cue stick 206 and the bent rod 208 to move passively horizontally. Thus, through the continuous passive rotation of the rotating cylinder 204, the bent rod 208 is indirectly subjected to continuous passive reciprocating translation. This causes the bent rod 208 to drive the rubber disc 209 to repeatedly extend and retract within the piston cylinder 210, causing repeated negative pressure to appear in the inner cavity of the piston cylinder 210. When the rubber disc 209 is passively pulled out, it generates a suction force through the suction tube. 212 and the ball shaft suction bucket 213 recycle and suck up the mud, while the translation of the rubber disc 209 also drives the one-way screw 214 to move, thereby driving the cutting blade 215, which is movably sleeved on the limiting plate 216, to rotate. The translation of the one-way screw 214 also drives the two arc discs 218 to form a squeezing and stretching force on the limiting plate 216 and the T-shaped block 217 on the corresponding folding soft cylinder 219. When the one-way screw 214 and the cutting blade 215 are engaged and rotated, the meshing point between them is always protected and sealed. The mud fluid passing through the cutting blade 215 will flow through the brush groove plate 221, and then... The filter plate 222 further sieves the mud, filtering out the rock fragments and air bubbles present in the mud. At the same time, the passive translation of the unidirectional screw 214 will drive the filter plate 222 to move synchronously. This allows the filter plate 222 to contact the brush groove plate 221 during the movement, and to open the filter holes on its surface. At the same time, because multiple U-shaped rods 220 fixed to the T-shaped block 217 are installed on the brush groove plate 221, when the cutting blade 215 drives the T-shaped block 217 to rotate, the brush groove plate 221 fixed to the T-shaped block 217 by the U-shaped rods 220 will also rotate at the same time.

[0046] When the rubber disc 209 passively generates extrusion pressure within the piston cylinder 210, it will output the pre-pumped mud from the delivery pipe 223 and guide it into the mud storage tank 102. The connection position between the delivery pipe 223 and the mud storage tank 102 ensures that the introduced mud enters the mud storage tank 102 smoothly, avoiding collisions between the mud at a higher position and the mud already present in the mud storage tank 102, which could cause air bubbles. The rotation of the T-shaped cylinder 203 will also drive the cam 2241 to rotate. The rotating cam 2241 will repeatedly push against the push rod 22. 5. The L-shaped plate 226 is pushed to move at the upper limit of the sleeve plate 227. The translation of the L-shaped plate 226 will cause the bidirectional threaded rod 229 to rotate. As a result, the rotation under the limit of the sleeve rod 230 will drive the two striking ball plates 231 to move in opposite directions. During the movement, the corresponding telescopic rod 232 will be stretched, which will guide and limit its movement. Thus, the repeated driving of the L-shaped plate 226 will cause the two striking ball plates 231 to repeatedly strike the mud storage tank 102, which will vibrate the material discharge part.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving, cavitation-resistant reciprocating mud pump for drilling, comprising a mud pump body (1), characterized in that: Water pipes (101) are fixedly installed on both ends of the mud pump body (1). A mud storage tank (102) is fixedly connected to the other end of one of the water pipes (101). A base (103) is fixedly connected to the outer wall of the mud storage tank (102) near the bottom. The top side wall of the base (103) is fixedly installed to the bottom end of the mud pump body (1). The base (103) is also provided with an anti-cavitation part (2). The anti-cavitation section (2) includes a one-way screw (214), on which a cutting blade (215) is threadedly connected. A brush groove plate (221) is also slidably connected to the rod of the one-way screw (214), and a filter plate (222) is fixedly connected to it. This is used to crush and filter the slurry that is collected in circulation. The one-way screw (214) is provided with a moving negative pressure structure to drive the slurry to be passively treated, thus preventing cavitation. The anti-cavitation part (2) also includes a bidirectional threaded rod (229). Both sides of the bidirectional threaded rod (229) are threaded with striking ball plates (231). Both striking ball plates (231) can intermittently fit and connect with the outer surface of the mud storage tank (102). A rotary telescopic structure is provided between the bidirectional threaded rod (229) and the moving negative pressure structure to drive the bidirectional threaded rod (229) to perform repeated reciprocating motion.

2. The energy-saving drilling anti-cavitation reciprocating mud pump according to claim 1, characterized in that: The movable negative pressure structure includes a rubber disc (209), one end of the outer wall of the rubber disc (209) is fixedly connected to the rod of a one-way screw (214), a piston cylinder (210) is slidably connected to the outer wall of the rubber disc (209), a suction tube (212) is threadedly connected to one end of the piston cylinder (210), and a ball shaft suction cup (213) is movably connected to the other end of the suction tube (212).

3. The energy-saving, cavitation-resistant reciprocating mud pump for drilling according to claim 2, characterized in that: A limiting plate (216) is slidably connected through the rod body of the one-way screw (214). The limiting plate (216) and the cutting blade (215) are movably connected at one end. The bottom plate of the limiting plate (216) is fixedly connected to the bottom inner wall of the extraction tube (212). A T-shaped block (217) is fixedly connected to the other end of the cutting blade (215).

4. The energy-saving, cavitation-resistant reciprocating mud pump for drilling according to claim 3, characterized in that: Two arc discs (218) are movably sleeved on the rod body of the unidirectional screw (214). The two arc discs (218) are respectively fixedly connected to the limiting plate (216) and the T-shaped block (217). A folding soft tube (219) is movably sleeved on the T-shaped block (217). Multiple U-shaped rods (220) are fixedly connected around the T-shaped block (217). The other end of each U-shaped rod (220) is fixedly connected to the plate frame of the brush groove plate (221).

5. The energy-saving, cavitation-resistant reciprocating mud pump for drilling according to claim 4, characterized in that: The outer wall of the brush groove plate (221) and the inner wall of the suction tube (212) are fixedly connected, and the filter plate (222) and the inner wall of the suction tube (212) are slidably connected in contact.

6. The energy-saving, cavitation-resistant reciprocating mud pump for drilling according to claim 5, characterized in that: A conveying pipe (223) is fixedly connected to the top cylinder of the piston cylinder (210). A connecting groove plate (211) is fixedly connected to the bottom outer wall of the piston cylinder (210). The bottom end of the connecting groove plate (211) is fixedly connected to the top outer wall of the base (103). A one-way valve (224) for controlling the one-way flow of liquid is fixedly connected to both the conveying pipe (223) and the suction pipe (212). The top pipe of the conveying pipe (223) is fixedly connected to the bottom tank of the mud storage tank (102).

7. The energy-saving drilling anti-cavitation reciprocating mud pump according to claim 1, characterized in that: The rotating telescopic structure includes a support plate (201) fixedly connected to the base (103). A motor (202) is fixedly connected to one end of the support plate (201). A T-shaped cylinder (203) is fixedly connected to the shaft of the motor (202). A rotating cylinder (204) is fixedly connected to the cylinder body of the T-shaped cylinder (203). An oblique arc groove (205) is provided on the outer wall of the rotating cylinder (204). A ball rod (206) is rotatably connected to the top of the oblique arc groove (205).

8. The energy-saving drilling anti-cavitation reciprocating mud pump according to claim 7, characterized in that: A bent rod (208) is fixedly connected to the top of the cue stick (206). A sleeve plate (207) is slidably connected to the body of the bent rod (208). The plate of the sleeve plate (207) is fixedly connected to the top of the support plate (201). The other end of the bent rod (208) is fixedly connected to the rubber disc (209).

9. The energy-saving, cavitation-resistant reciprocating mud pump for drilling according to claim 7, characterized in that: A cam (2241) is fixedly connected to the T-shaped cylinder (203). A push rod (225) is slidably connected to the outer wall of the cam (2241). A sleeve plate (227) is slidably connected to one end of the push rod (225). The plate of the sleeve plate (227) is fixedly connected to the outer wall of the support plate (201). An L-shaped plate (226) is fixedly connected to the other end of the push rod (225).

10. The energy-saving, cavitation-resistant reciprocating mud pump for drilling according to claim 9, characterized in that: A spring (228) is fixedly connected between the L-shaped plate (226) and the sleeve plate (227). The L-shaped plate (226) is threadedly connected to one side of the double-threaded rod (229). A sleeve rod (230) is also movably sleeved on the double-threaded rod (229). The rod of the sleeve rod (230) is fixedly connected to the outer wall of the mud storage tank (102). The plates of the two L-shaped plates (226) are respectively fixedly connected to the L-shaped plate (226) and the outer wall of the mud storage tank (102) with telescopic rods (232).

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