Sand-proof lifting device for submersible pump

Abstract

The application discloses a sand-preventing lifting appliance for a submersible pump, which comprises a protection unit, a clamping unit, a stabilizing unit and a fastening unit. The protection unit comprises a base and a protection frame arranged on the upper end of the base. The clamping unit comprises a trigger column, a group of first hinged rods arranged at the bottom of the trigger column, a group of clamping blocks arranged at the upper end of the first hinged rods and a locking assembly arranged on one side of the trigger column. The stabilizing unit comprises a ground-touching column arranged in the trigger column, a group of second hinged rods arranged around the ground-touching column and a group of supporting legs arranged at the bottom of the base. The fastening unit comprises a rotating ring and a movable assembly arranged at the bottom of the rotating ring. The sand-preventing lifting appliance for the submersible pump can avoid the collision between the pump body and the outside world during the lifting of the submersible pump, and can filter the sand in the water flow sucked by the submersible pump to avoid the damage or blockage of the inside of the submersible pump.

Description

Technical Field

[0001] This invention relates to the field of drainage and dewatering technology, and in particular to a mud and sand prevention lifting device for submersible pumps. Background Technology

[0002] An open-pit coal mine refers to a coal seam deposited on the surface or in a shallow layer due to geographical changes, which is mined directly in the open. During the mining process, in order to prevent surface water from entering the mining area, drainage ditches are set up outside the surface boundary. In some low-lying areas, surface water that cannot flow out of the site by gravity and poses a threat to the safety of open-pit mine production is pumped out through pipelines.

[0003] Submersible pumps are installed at water collection points in open-pit mines for drainage. These waterlogged areas are generally deep, requiring the submersible pumps to be hoisted. During hoisting, the pumps may be bumped or knocked, causing them to malfunction. Furthermore, the pumps draw in large amounts of mud and sand during operation, causing wear or damage to internal components. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above or prior art, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a mud and sand prevention lifting tool for submersible pumps, which can solve the problem of damage to internal components of the pump body caused by direct collision during the lifting process of submersible pumps, and also solve the problem of impeller damage or internal blockage caused by mud and sand sucked in when the submersible pump is working.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a mud and sand prevention lifting device for submersible pumps, comprising a protection unit including a base and a protective frame disposed on the upper end of the base; a clamping unit including a trigger post, a set of first hinge rods disposed at the bottom of the trigger post, a set of clamping blocks disposed on the upper end of the first hinge rods, and a locking component disposed on one side of the trigger post; a stabilizing unit including a ground contact post disposed inside the trigger post, a set of second hinge rods disposed around the ground contact post, and a set of support legs disposed at the bottom of the base; and a fastening unit including a rotating ring and a movable component disposed at the bottom of the rotating ring.

[0008] As a preferred embodiment of the anti-mud and sand lifting device for submersible pumps described in this invention, the rotating ring includes a plurality of arc-shaped guide grooves disposed at its bottom, and a limiting block disposed between two adjacent arc-shaped guide grooves.

[0009] As a preferred embodiment of the anti-mud and sand lifting device for submersible pumps described in this invention, the movable component includes a support ring and a plurality of movable blocks disposed through the upper end of the support ring; the movable block includes a C-shaped nozzle disposed on one side thereon and a cylinder disposed on the top of the movable block.

[0010] As a preferred embodiment of the anti-mud and sand lifting device for submersible pumps described in this invention, the base includes a plurality of square grooves through its surface, a pair of guide holes on both sides of the square grooves, and a positioning hole through the center of the base; the second hinge rod is hinged to the bottom of the base; the positioning hole includes a support groove on its top and an inclined surface on the bottom of the positioning hole.

[0011] As a preferred embodiment of the anti-mud and sand lifting device for submersible pumps described in this invention, the protective frame includes a bottom ring, a plurality of protective rods disposed through the upper end of the bottom ring, a top ring disposed at the upper end of the protective rods, a plurality of lifting buckles disposed around the top ring, and a flexible net disposed inside the protective rods.

[0012] As a preferred embodiment of the anti-mud and sand lifting device for submersible pumps described in this invention, the trigger column includes a cavity disposed therein and a plurality of hook blocks disposed at the bottom of the cavity; a movable groove is formed between the plurality of hook blocks.

[0013] As a preferred embodiment of the anti-mud and sand lifting device for submersible pumps described in this invention, the clamping block includes a guide rod disposed on one side thereon, a clamping mouth disposed on the top of the clamping block, and a first hinge seat disposed on the bottom of the clamping block.

[0014] As a preferred embodiment of the anti-mud and sand lifting device for submersible pumps described in this invention, the locking assembly includes a locking groove disposed on the surface of the base, a locking block disposed inside the locking groove, and an L-shaped rod disposed on one side of the trigger post.

[0015] As a preferred embodiment of the anti-mud and sand lifting device for submersible pumps described in this invention, the ground contact post includes a plurality of second hinge seats disposed around it and a top plate disposed on the top of the ground contact post; the trigger post also includes a plurality of third junction seats disposed at its bottom; and the support leg includes a fourth hinge seat disposed on one side of it.

[0016] As a preferred embodiment of the anti-mud and sand lifting device for submersible pumps according to the present invention, wherein: the two ends of the first hinge rod are respectively hinged to the first hinge seat and the third junction seat; the two ends of the second hinge rod are respectively hinged to the second hinge seat and the fourth hinge seat; the clamping unit further includes a first spring disposed on the body of the trigger column; the stabilizing unit further includes a second spring disposed inside the trigger column.

[0017] The beneficial effects of the present invention are: the present invention can avoid the pump body from directly colliding with the outside world during the hoisting of the submersible pump, and at the same time can filter the mud and sand in the water flow sucked in by the submersible pump to avoid damage or blockage to the inside. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0019] Figure 1 A schematic diagram of the overall explosive structure of a mud and sand protection lifting device for submersible pumps.

[0020] Figure 2 The image shows the top view and AA section of the base of the mud and sand protection device for submersible pumps.

[0021] Figure 3 Top view and BB section view of the fastening unit of the mud and sand prevention lifting device for submersible pumps.

[0022] Figure 4 A simplified top view of the overall structure of the mud and sand protection device for submersible pumps.

[0023] Figure 5 Submersible pump anti-mud and sand lifting device Figure 4 CC cross-section view.

[0024] Figure 6 Submersible pump anti-mud and sand lifting device Figure 4 DD cross-section view.

[0025] Figure 7 This is a schematic diagram of the overall mud and sand prevention lifting device for submersible pumps. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1

[0030] Reference Figures 1-7 This is the first embodiment of the present invention. This embodiment provides a mud and sand prevention lifting device for submersible pumps, which includes a protection unit 100, a base 101, and a protection frame 102 disposed on the upper end of the base 101.

[0031] The clamping unit 200 includes a trigger post 201, a set of first hinge rods 202 disposed at the bottom of the trigger post 201, a set of clamping blocks 203 disposed at the upper end of the first hinge rods 202, and a locking assembly 204 disposed on one side of the trigger post 201.

[0032] The stabilizing unit 300 includes a ground contact post 301 disposed inside the trigger post 201, a set of second hinge rods 302 disposed around the ground contact post 301, and a set of support legs 303 disposed at the bottom of the base 101.

[0033] The fastening unit 400 includes a rotating ring 401 and a movable component 402 disposed at the bottom of the rotating ring 401.

[0034] Furthermore, the rotating ring 401 includes a plurality of arc-shaped guide grooves 401a disposed at its bottom, and a limiting block 401b disposed between two adjacent arc-shaped guide grooves 401a.

[0035] Furthermore, the active component 402 includes a support ring 402a and a plurality of movable blocks 402b disposed through the upper end of the support ring 402a.

[0036] The support ring 402a includes a plurality of T-slots 402a-1 disposed on its surface;

[0037] The movable block 402b includes a C-shaped nozzle 402b-1 disposed on one side thereon, and a cylinder 402b-2 disposed on the top of the movable block 402b.

[0038] Furthermore, the base 101 includes a plurality of square grooves 101a through which it is disposed on its surface, a pair of guide holes 101b disposed on both sides of the square grooves 101a, and a positioning hole 101c through which it is disposed at the center of the base 101.

[0039] The second hinge rod 302 is hinged to the bottom of the base 101;

[0040] The positioning hole 101c includes a support groove 101c-1 disposed on its top and an inclined surface 101c-2 disposed on the bottom of the positioning hole 101c.

[0041] Furthermore, the protective frame 102 includes a bottom ring 102a, a plurality of protective rods 102b extending through the upper end of the bottom ring 102a, a top ring 102c disposed on the upper end of the protective rods 102b, a plurality of hanging buckles 102d disposed around the top ring 102c, and a flexible net 102e disposed inside the protective rods 102b.

[0042] Furthermore, the trigger post 201 includes a cavity 201a disposed therein and a plurality of hook blocks 201b disposed at the bottom of the cavity 201a; an active groove 201c is formed between the plurality of hook blocks 201b.

[0043] Furthermore, the clamping block 203 includes a guide rod 203a disposed on one side thereon, a clamping mouth 203b disposed on the top of the clamping block 203, and a first hinge seat 203c disposed on the bottom of the clamping block 203.

[0044] Furthermore, the locking assembly 204 includes a locking groove 204a disposed on the surface of the base 101, a locking block 204b disposed inside the locking groove 204a, and an L-shaped rod 204c disposed on one side of the trigger post 201.

[0045] Furthermore, the ground contact post 301 includes a plurality of second hinge seats 301a disposed around it and a top plate 301b disposed on the top of the ground contact post 301;

[0046] The trigger post 201 also includes a plurality of third junction seats 201d disposed at its bottom;

[0047] The support leg 303 includes a fourth hinge seat 303a disposed on one side thereof.

[0048] Furthermore, the two ends of the first hinge rod 202 are hinged to the first hinge seat 203c and the third junction seat 201d respectively; the two ends of the second hinge rod 302 are hinged to the second hinge seat 301a and the fourth hinge seat 303a respectively.

[0049] The clamping unit 200 also includes a first spring 205 disposed on the body of the trigger post 201;

[0050] The stabilizing unit 300 also includes a second spring 304 disposed inside the trigger post 201.

[0051] It should be noted that the protection unit 100 is used for protection and filtration during the pump body hoisting process, the clamping unit 200 is used for fixing the pump body, the stabilizing unit 300 is used for supporting and fixing the hoisting device itself and the pump body, and the fastening unit 400 strengthens the fixing effect on the pump body.

[0052] Preferably, the fastening unit 400 is fixedly connected to the top of the protective frame 102, that is, the upper end of the top ring 102c is fixedly connected to the lower end of the support ring 402a. The support ring 402a has four slots for the linear movement of the movable block 402b, all of which point to the center. The movable block 402b can move within the slots. The upper surface of the movable block 402b is flush with the upper surface of the support ring 402a. The surface of the support ring 402a has two inverted T-shaped T-slots 402a-1, which are symmetrically distributed. The T-slots 402a-1 are located on the surface of the support ring 402a and between the movable blocks 402b. The T-slot 402a-1 can cooperate with the limiting block 401b, and the two can limit each other so that the rotating ring 401 can only rotate partially. The size of the rotating ring 401 is the same as that of the support ring 402a. The bottom of the support ring 402a is provided with an arc-shaped guide groove 401a in the same number as the moving blocks 402b. The arc-shaped guide groove 401a can cooperate with the cylinder 402b-2. Therefore, when the rotating ring 401 rotates, it can drag the four moving blocks to move in a straight line. The C-shaped nozzle 402b-1 is on one side of the moving block 402b and can clamp the pump body. Rubber blocks can be installed on the inner wall of the C-shaped nozzle 402b-1 to increase its compatibility in the process of clamping the pump body.

[0053] Preferably, bolt through holes are provided on the upper surface of the rotating ring 401, and the rotating ring 401 can be locked to the upper surface of the support ring 402a by adding bolts.

[0054] Preferably, a set of protective frames 102 are fixedly connected to the top of the base 101. The top of the protective frames 102 has four hooks 102d, and the hooks 102d can be used to tie lifting ropes. The protective rods 102b extend out of the bottom ring 102a, and the extended part can be used to fix and connect with the array of holes on the base 101, while ensuring a certain degree of sealing. The bottom ring 102a and the top ring 102c are used not only to install multiple protective rods 102b, but also to install flexible nets 102e. The flexible nets 102e are located inside the protective rods 102b and can filter larger particles of mud and sand. In addition, the use of flexible nets 102e can avoid obstructing the movement of the clamping block 203.

[0055] Preferably, the base 101 has four through square slots 101a. The square slots 101a not only reduce the weight of the lifting device and save processing materials, but also provide a range of motion for the first hinge rod 202. Each square slot 101a has a pair of guide holes 101b on both sides. The holes are slightly long enough to accommodate the guide rod 203a. The two cooperate with each other, so the clamping block 203 can move linearly along the guide hole 101b. The base 101 also has a through positioning hole 101c in the center. The upper end of the positioning hole 101c has a support groove 101c-1. The groove has a certain depth, which can not only accommodate the bottom of the second spring 304 to fix the bottom of the second spring 304, but also provide a space for the top of the trigger post 201, increasing the range of motion of the trigger post 201. The bottom of the positioning hole 101c also has a slope 101c-2, which can also provide a certain range of motion for the second hinge rod 302.

[0056] Preferably, the trigger post 201 moves up and down within the positioning hole 101c. Its top has a circular piece with a diameter larger than the post body. The bottom of the circular piece is fixedly connected to the first spring 205. The other end of the first spring 205 is fixedly connected to the bottom of the support groove 101c-1. An L-shaped rod 204c is fixedly connected to the side of the circular piece. The bottom of the L-shaped rod 204c has a through hole. The hollow cavity 201a inside the trigger post 201 can accommodate the ground contact post 301 and the second spring 304. The two ends of the second spring 304 are fixedly connected to the top of the cavity 201a and the top of the top piece 301b, respectively. There are four hook blocks 201b at the bottom of the cavity 201a. The hook blocks 201b limit the movement of the top piece 301b. An equal number and spacing of movable grooves 201c are formed between each hook block 201b. These movable grooves 201c provide a margin of movement for the second hinge rod 302, allowing for a larger stroke.

[0057] Preferably, there are four clamping blocks 203, which are movably connected to the trigger post 201 via the first hinge rod 202. Therefore, when the trigger post 201 moves up and down, it can drive the clamping blocks 203 to perform linear telescopic movement along the guide hole 101b. The top of the clamping block 203 also has a clamping nozzle 203b, which needs to extend slightly beyond the clamping block 203 itself. The clamping nozzle 203b is in the shape of a regular arc. Two rubber blocks are fixedly installed at both ends of the inner arc surface of the clamping nozzle 203b for clamping the pump body. This provides the rigid clamping nozzle 203 with extension and applicability for clamping the pump body surface.

[0058] Preferably, the locking assembly 204 is used to lock the trigger post 201 after compressing the first spring 205. The locking groove 204a is a rectangular groove that can accommodate the bottom part of the L-shaped rod 204c. There is also a locking block 204b in the locking groove 204a. The locking block 204b has a through hole in the center, which is aligned with the through hole at the bottom of the L-shaped rod 204c. A pin can be inserted between the two holes. Since the locking groove 204a has a certain length, it is easy for personnel to insert and remove the pin.

[0059] Preferably, the ground contact post 301 is movably connected to the support leg 303 via the second hinge rod 302. Therefore, during the movement of the ground contact post 301 inside the trigger post 201, the support leg 303 can be extended or retracted. There are four support legs 303, with tapered ends, which allows the support legs 303 to be well fixed to the ground. When both the support leg 303 and the clamping block 203 are retracted, the vertical length of the ground contact post 301 is longer than the vertical length of the support leg 303. (See Appendix) Figure 4 Or 5, while the supporting leg 303 is extended and the clamping blocks 203 are all retracted, the vertical length of the ground-contacting column 301 must be equal to the vertical projection length of the supporting leg 303.

[0060] When in use, its working state can fully adapt to the six states of the lifting equipment: transportation, deployment, installation, hoisting, landing, and recovery.

[0061] During transportation or storage, the trigger post 201 is at its lowest position relative to the positioning hole 101c. The pins have been inserted into the circular holes on the L-shaped rod 204c and the locking block 204b. The trigger post 201 has compressed the first spring 205. Under the action of the first hinge rod 202, the clamping block 203 is also in a retracted state. At the same time, the ground contact post 301 is at its lowest position relative to the trigger post 201. Under the action of the second hinge rod 302, the support leg 303 is in a vertically retracted state, and the second spring 304 is in a relaxed state. At this time, the ground contact post 301 is longer than the support leg 303, which can save a lot of space in the storage state and facilitate transportation.

[0062] In the unfolded state, personnel need to pull out the aforementioned pins. The first spring 205 loses its constraint and lifts the trigger post 201. The trigger post 201 is at its highest position relative to the positioning hole 101c. The trigger post 201 opens the four clamping blocks 203 through the first hinge rod 202. At this time, the ground contact post 301 is lifted upward by the trigger post 201. The ground contact post 301 opens the four support legs 303 through the second hinge rod 302. At this time, the ground contact post 301 should be shorter than the vertical projection line of the support legs 303. After the lifting device is placed on the ground, it presses down on the support legs 303 under its own weight. The extension length of the ground contact post 301 gradually becomes level with the vertical projection line of the support legs 303 until the lifting device is finally balanced. In the unfolded state, it is convenient for personnel to install the submersible pump.

[0063] In the installed state, the submersible pump rests on the upper end of the trigger post 201. Under the weight of the submersible pump, the trigger post 201 is continuously pressed downwards. The trigger post 201 drives the clamping block 203 to continuously retract through the first hinge rod 202 until the clamping block 203 clamps the pump body. At this time, the relative position of the trigger post 201 and the ground contact post 301 changes, and the second spring 304 is also compressed. The ground contact post 301 is at its highest point relative to the trigger post 201, and at the same time, the trigger post 201 is at its lowest point relative to the positioning hole 101c. Under the action of the pump body's own weight, the clamping block 203 always clamps the pump body. Then, the rotating ring 401 is turned and the moving block 402b clamps the pump body. The rotating ring 401 is locked to the support ring 402a by the aforementioned bolts to ensure the clamping capacity of the moving block 402b. In the installed state, it is very convenient for personnel to install and fix the submersible pump. The clamping state is reliable and stable, improving work efficiency.

[0064] In the hoisting state, the ropes are secured to four points at the lifting buckles 102d. Then, the submersible pump and the lifting device are lifted and suspended in the air. At this time, the second spring 304 loses its restraint and pushes the ground contact column 301 downward until the ground contact column 301 is at its lowest point relative to the trigger column 201. At this time, the support leg 303 is in a vertically retracted state under the action of the second hinge rod 302. The ground contact column 301 is longer than the support leg 303. In the hoisting state, the pump body is surrounded by the protection unit 100 and is in a collision-proof state. At the same time, it can also provide a certain degree of protection for the pump body's wiring and pipelines. The retracted state of the support leg 303 will not affect the descent process of the pump body and the lifting device. Especially when encountering a well-shaped deep pit, it can greatly protect the pump body from being bumped and ensure a smooth descent.

[0065] In the landing state, the rope slowly descends, and the pump body and lifting device gradually fall to the bottom of the pit. Since the ground contact post 301 is longer than the support leg 303, the ground contact post 301 is the first to contact the ground. Under the action of gravity, the pump body and lifting device continuously move downward, and the relative position of the ground contact post 301 and the trigger post 201 changes. The ground contact post 301 continuously moves upward. Under the action of the second hinge seat 301a, the support leg 303 continuously opens. Since the ground contact post 301 is longer than the support leg 303, the opening of the support leg 303 is not affected by the ground until the extension length of the ground contact post 301 gradually becomes level with the vertical projection line of the support leg 303 until the lifting device is finally balanced. In the landing state, the support leg 303 can be opened by its own weight without affecting the transportation and hoisting process. The expanded support leg 303 can stabilize the working posture of the pump body and prevent it from tilting.

[0066] In the recovery state, it is the same as in the hoisting state.

[0067] In summary, this design can prevent the pump body from colliding directly with the outside environment during the hoisting of the submersible pump. At the same time, it can filter the mud and sand in the water flow sucked into the submersible pump to prevent damage or blockage to the internal parts. It can also ensure that the power cord and pipeline parts are not crushed during the hoisting process and ensure the stability of the submersible pump when it is in operation after landing.

[0068] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0069] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0070] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A mud and sand prevention lifting device for submersible pumps, characterized in that: include, The protection unit (100) includes a base (101) and a protection frame (102) disposed on the upper end of the base (101). The clamping unit (200) includes a trigger post (201), a set of first hinge rods (202) disposed at the bottom of the trigger post (201), a set of clamping blocks (203) disposed at the upper end of the first hinge rods (202), and a locking assembly (204) disposed on one side of the trigger post (201). The stabilizing unit (300) includes a ground contact post (301) disposed inside the trigger post (201), a set of second hinge rods (302) disposed around the ground contact post (301), and a set of support legs (303) disposed at the bottom of the base (101). The fastening unit (400) includes a rotating ring (401) and a movable component (402) disposed at the bottom of the rotating ring (401); The clamping block (203) includes a guide rod (203a) disposed on one side thereon, a clamping mouth (203b) disposed on the top of the clamping block (203), and a first hinge seat (203c) disposed on the bottom of the clamping block (203). The ground contact post (301) includes a plurality of second hinge seats (301a) disposed around it and a top plate (301b) disposed on the top of the ground contact post (301). The trigger post (201) also includes a plurality of third hinge seats (201d) disposed at its bottom. The support leg (303) includes a fourth hinge seat (303a) disposed on one side thereon. The first hinge rod (202) is hinged at both ends to the first hinge seat (203c) and the third hinge seat (201d) respectively; the second hinge rod (302) is hinged at both ends to the second hinge seat (301a) and the fourth hinge seat (303a) respectively. The clamping unit (200) also includes a first spring (205) disposed on the body of the trigger post (201); The stabilizing unit (300) also includes a second spring (304) disposed inside the trigger post (201); In the installed state, the submersible pump rests on the upper end of the trigger column (201). Under the weight of the submersible pump, the trigger column (201) is continuously pressed and moves downward. The trigger column (201) drives the clamping block (203) to continuously retract through the first hinge rod (202) until the clamping block (203) clamps the pump body around. In the hoisting state, the second spring (304) loses its constraint and pushes the ground contact post (301) downward until the ground contact post (301) is at its lowest point relative to the trigger post (201). At this time, the support leg (303) is in a vertically retracted state under the action of the second hinge rod (302). When the grounding post (301) is in the ground state, it moves upward continuously, and under the action of the second hinge seat (301a), the supporting leg (303) opens continuously.

2. The anti-mud and sand lifting device for submersible pumps as described in claim 1, characterized in that: The rotating ring (401) includes a plurality of arc-shaped guide grooves (401a) disposed at its bottom, and a limiting block (401b) disposed between two adjacent arc-shaped guide grooves (401a).

3. The anti-mud and sand lifting device for submersible pumps as described in claim 2, characterized in that: The active component (402) includes a support ring (402a) and a plurality of movable blocks (402b) disposed through the upper end of the support ring (402a). The support ring (402a) includes a plurality of T-slots (402a-1) disposed on its surface; The movable block (402b) includes a C-shaped nozzle (402b-1) disposed on one side thereon, and a cylinder (402b-2) disposed on the top of the movable block (402b).

4. The mud and sand prevention lifting device for submersible pumps as described in any one of claims 1 to 3, characterized in that: The base (101) includes a plurality of square grooves (101a) through which a plurality of square grooves (101a) are disposed, a pair of guide holes (101b) disposed on both sides of the square grooves (101a), and a positioning hole (101c) through which a plurality of square grooves (101a) are disposed at the center of the base (101). The positioning hole (101c) includes a support groove (101c-1) disposed on its top and an inclined surface (101c-2) disposed on the bottom of the positioning hole (101c).

5. The anti-mud and sand lifting device for submersible pumps as described in claim 4, characterized in that: The protective frame (102) includes a bottom ring (102a), a plurality of protective rods (102b) disposed through the upper end of the bottom ring (102a), a top ring (102c) disposed at the upper end of the protective rods (102b), a plurality of hanging buckles (102d) disposed around the top ring (102c), and a flexible net (102e) disposed inside the protective rods (102b).

6. The anti-mud and sand lifting device for submersible pumps as described in claim 5, characterized in that: The trigger post (201) includes a cavity (201a) disposed therein and a plurality of hook blocks (201b) disposed at the bottom of the cavity (201a); a movable groove (201c) is formed between the plurality of hook blocks (201b).

7. The mud and sand prevention lifting device for submersible pumps as described in claim 6, characterized in that: The locking assembly (204) includes a locking groove (204a) disposed on the surface of the base (101), a locking block (204b) disposed inside the locking groove (204a), and an L-shaped rod (204c) disposed on one side of the trigger post (201).

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