Sealing structure, pump using sealing structure and working method of pump

Abstract

The invention belongs to the technical field of engineering elements, and particularly relates to a sealing structure, a pump using the sealing structure and a working method of the pump. The invention provides a sealing structure which comprises an impeller rotationally arranged in a pump body. The water outlet pipe is arranged at the upper end of the pump body; the limiting assembly is arranged in the water outlet pipe and is suitable for limiting the connecting water pipe; the limiting assembly comprises a limiting pipe arranged on the inner wall of the water outlet pipe; the limiting plates are in an arc shape, the multiple limiting plates are arranged in the circumferential direction of the inner wall of the limiting pipe at equal intervals, and a gap is formed between every two adjacent limiting plates; after the connecting water pipe is inserted into the limiting pipe, the limiting plate extrudes the connecting water pipe from outside to inside; when the connecting water pipe is inserted into or pulled out of the limiting pipe, the side wall of the limiting plate is suitable for cleaning impurities on the outer wall of the connecting water pipe; through the arrangement of the limiting assembly, the clamping stability of the connecting water pipe is improved, and meanwhile, the outer wall of the connecting water pipe is cleaned in the inserting or pulling-out process of the connecting water pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering components, and specifically relates to equipment sealing, and in particular to a sealing structure, a pump using the structure, and a working method thereof. Background Art

[0002] A centrifugal pump is a pump that transports liquids by the centrifugal force generated by the rotation of the impeller. Due to its compact structure, wide flow range and wide head range, it is often used as a mobile pumping equipment.

[0003] When the water pipe is connected and fixed to the water outlet of the centrifugal pump, the traditional connection method has poor sealing, which easily causes water leakage from the connection; moreover, when the centrifugal pump rotates at high speed, the internal water flow pressure increases, which may cause the connecting water pipe to detach from the water outlet.

[0004] Therefore, how to solve the problem of poor sealing at the water outlet and easy detachment of the connecting water pipe is a technical problem that urgently needs to be solved in this field.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0006] The embodiments of the present disclosure at least provide a sealing structure, a pump using the structure, and a working method thereof.

[0007] In a first aspect, an embodiment of the present disclosure provides a sealing structure, comprising: Pump body; An impeller, which is rotatably disposed within the pump body; A water outlet pipe, which is arranged at the upper end of the pump body; A limiting assembly, which is arranged inside the water outlet pipe and is suitable for limiting the connection water pipe; The position limiting assembly comprises: a position limiting pipe, which is arranged on the inner wall of the water outlet pipe; The limiting plate is in the shape of an arc, and a plurality of the limiting plates are arranged circumferentially around the inner wall of the limiting tube at equal intervals, and gaps are provided between adjacent limiting plates; Wherein, after the connecting water pipe is inserted into the limiting pipe, the limiting plate squeezes the connecting water pipe from the outside to the inside; When the connecting water pipe is inserted into or pulled out of the limiting pipe, the side wall of the limiting plate is suitable for cleaning impurities on the outer wall of the connecting water pipe.

[0008] In an optional embodiment, the plurality of limit plates are parallel to each other, and the distance between the upper portion of the limit plate and the axis of the limit tube is smaller than the distance between the lower portion of the limit plate and the axis of the limit tube.

[0009] In a second aspect, the present disclosure also provides a pump, comprising: A regulating assembly is arranged at the water outlet section of the pump body and the upper end of the regulating assembly is close to the water outlet pipe; The regulating assembly is adapted to the impeller and divides the water outlet section of the pump body into inner and outer ring flow channels; Wherein, if the impeller rotates normally, the liquid is suitable to pass through the regulating component and flow to the outer ring flow channel; If the impeller rotates at an overspeed, the adjusting member of the adjusting assembly slides outward to reduce the reverse force on the impeller.

[0010] In an optional embodiment, the adjustment assembly includes: a positioning member, which is arranged on the inner wall of the water outlet section of the pump body and is in an arc shape; The adjusting member is slidably disposed in the positioning member, and the outer end thereof protrudes from the end of the positioning member; The linkage gear is rotatably arranged in the positioning member and is respectively meshed with the two adjusting members.

[0011] In an optional embodiment, the adjusting member includes: a first adjusting plate and a second adjusting plate, the first adjusting plate and the second adjusting plate are offset from each other, and the inner wall of the first adjusting plate is slidably fitted with the inner wall of the positioning member.

[0012] In an optional embodiment, a first limiting plate is disposed at the outer end of the first adjusting plate, the first limiting plate faces the impeller and is close to the outer wall of the impeller.

[0013] In an optional embodiment, a second limit plate is provided at the outer end of the second adjustment plate, the second limit plate faces the impeller, and a gap is provided between the second limit plate and the impeller, wherein the liquid pushes the second limit plate to make the second adjustment plate slide toward the water outlet pipe.

[0014] In an optional embodiment, the positioning member is provided with a plurality of first through holes, and the first through holes penetrate the positioning member; The first adjustment plate is provided with a second through hole corresponding to the first through hole, wherein when the first adjustment plate slides outward, the first adjustment plate is suitable for sealing the first through hole.

[0015] In an optional embodiment, a positioning column is provided in the positioning member, and the linkage gear is rotatably sleeved on the outer wall of the positioning column; The outer wall of the positioning column is sleeved with a torsion spring, and the two ends of the torsion spring are respectively fixed to the inner wall of the positioning member and the bottom wall of the linkage gear.

[0016] In an optional implementation, the first adjustment plate and the second adjustment plate are arc-shaped and coaxially arranged.

[0017] In an optional embodiment, the pump body has an impeller rotatably disposed therein; An adjusting assembly adapted to the impeller and dividing the water outlet section of the pump body into inner and outer ring flow channels; The regulating assembly comprises: a positioning member, which is arranged on the inner wall of the water outlet section of the pump body and is in an arc shape; An adjusting member is slidably disposed in the positioning member, and two adjusting members protrude from two ends of the positioning member respectively; A linkage gear, which is rotatably disposed in the positioning member and is respectively meshed with the two adjusting members; Wherein, if the impeller rotates normally, the liquid is suitable to pass through the regulating component and flow to the outer ring flow channel; If the impeller rotates at an excessive speed, the adjusting member slides outward to reduce the reverse force acting on the impeller.

[0018] In an optional embodiment, the adjusting member includes: a first adjusting plate and a second adjusting plate, wherein the first adjusting plate and the second adjusting plate are offset from each other and are coaxially arranged.

[0019] In a third aspect, the present disclosure also provides a pump operation method, including: When the impeller rotates circumferentially, it is suitable for driving the liquid in the pump body to flow through the regulating component to the water outlet pipe; If the impeller rotates normally, the liquid is suitable to pass through the regulating component and flow to the outer ring flow channel, and the liquid in the inner and outer ring flow channels both flow to the outlet pipe; If the impeller rotates at an overspeed, the adjusting member of the adjusting assembly slides outward to reduce the reverse force on the impeller.

[0020] The beneficial effects of the present invention are that the sealing structure of the present invention, the pump using the structure and the working method thereof, a pump, through the setting of the limit component, improves the stability of the connecting water pipe when clamping, when the connecting water pipe is gradually inserted into the limit pipe, each limit plate is used to gradually clamp the limit connecting water pipe from all sides to improve the connection stability between the connecting water pipe and the water outlet pipe; at the same time, during the process of inserting or pulling out the connecting water pipe, the side wall of the cleaning plate is suitable for cleaning impurities on the outer wall of the connecting water pipe, avoiding impurities on the outer wall of the connecting water pipe from remaining between the connecting water pipe and the inner wall of the limit pipe, thereby improving the sealing performance.

[0021] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A three-dimensional diagram of a sealing structure provided in an embodiment of the present disclosure; Figure 2 A three-dimensional diagram of a water outlet pipe and a limiting assembly provided in an embodiment of the present disclosure; Figure 3 A top view of a limit assembly and a water outlet pipe provided in an embodiment of the present disclosure; Figure 4 An internal stereoscopic view of a pump body provided for an embodiment of the present disclosure; Figure 5 A perspective view of an adjustment assembly is provided for an embodiment of the present disclosure; Figure 6 An internal stereogram of an adjustment assembly provided for an embodiment of the present disclosure; Figure 7 A perspective view of a first adjustment plate provided in an embodiment of the present disclosure; Figure 8 A front view of an adjustment assembly provided in an embodiment of the present disclosure; Fig. 9 This is a schematic diagram of the outward sliding state of the adjustment component provided in an embodiment of the present disclosure.

[0025] In the figure: 1. Pump body; 2. Impeller; 3. Water outlet pipe; 30. Limiting assembly; 31. Limiting pipe; 32. Limiting plate; 4. Adjustment component; 41. Positioning member; 42. Adjustment member; 43. Linkage gear; 44. First adjustment plate; 45. Second adjustment plate; 46. First limit plate; 47. Second limit plate; 48. First through hole; 49. Second through hole. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component may be directly formed on the second component, or the third component may be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0028] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0029] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0030] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0031] Research has found the following shortcomings of the prior art: the impeller rotates at high speed to transport the liquid to the outlet pipe, and the pump body is close to the outlet pipe and away from the inner wall of the impeller. Due to long-term impact of high-speed liquid flow, it is easily corroded. In addition, the high-speed flowing fluid is blocked by the inner wall of the pump body. The reverse force on the impeller is relatively large here, which will cause the impeller shaft to be pushed by the reverse force and shake.

[0032] Therefore, how to prevent the impeller shaft from shaking due to the reverse force is a technical problem that needs to be solved urgently in this field.

[0033] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0036] like Figures 1 to 3 As shown, some embodiments provide a sealing structure, including: a pump body 1; an impeller 2, which is rotatably arranged in the pump body 1; an inlet pipe is arranged at one end of the pump body 1 close to the impeller 2, and liquid enters the pump body 1 through the inlet pipe, and the impeller 2 rotates at high speed to discharge the liquid from the pump body 1 through the outlet pipe 3. The outlet pipe 3 is arranged at the upper end of the pump body 1; a limit assembly 30, which is arranged inside the outlet pipe 3 and is suitable for limiting the connection of the water pipe; the limit assembly 30 includes: a limit pipe 31, which is arranged on the inner wall of the outlet pipe 3; the outer wall of the limit pipe 31 abuts against the inner wall of the outlet pipe 3; a limit plate 32, which is in an arc shape, and a plurality of the limit plates 32 are equidistantly arranged around the inner wall of the limit pipe 31, and a gap is provided between adjacent limit plates 32; refer to the attached Figure 3 , several of the limit plates 32 are parallel to each other, and the distance between the upper part of the limit plate 32 and the axis of the limit tube 31 is smaller than the distance between the lower part of the limit plate 32 and the axis of the limit tube 31. After the connecting water pipe is inserted into the limit tube 31, the limit plate 32 squeezes the connecting water pipe from the outside to the inside; as the lower end of the connecting water pipe continues to be inserted into the limit tube 31, the limit plate 32 gradually clamps the limiting connecting water pipe. When the connecting water pipe is inserted into or pulled out of the limit tube 31, the side wall of the limit plate 32 is suitable for cleaning impurities on the outer wall of the connecting water pipe. By setting the limiting component 30, the stability of the connecting water pipe when clamped is improved. When the connecting water pipe is gradually inserted into the limiting tube 31, each limiting plate 32 gradually clamps the limiting connecting water pipe from all sides to improve the connection stability between the connecting water pipe and the water outlet pipe 3; at the same time, during the process of inserting or removing the connecting water pipe, the side wall of the cleaning plate is suitable for cleaning impurities on the outer wall of the connecting water pipe, thereby avoiding impurities on the outer wall of the connecting water pipe remaining between the connecting water pipe and the inner wall of the limiting tube 31, thereby improving the sealing performance.

[0037] Reference Figure 1-9 Some embodiments provide a pump, including: an adjusting component 4, which is arranged at the outlet section of the pump body 1 and the upper end is close to the outlet pipe 3; the adjusting component 4 is adapted to the impeller 2, and divides the outlet section of the pump body 1 into inner and outer ring flow channels; wherein, if the impeller 2 rotates normally, the liquid is suitable to flow to the outer ring flow channel through the adjusting component 4; if the impeller 2 rotates at an overspeed, the adjusting member 42 of the adjusting component 4 slides outward to reduce the reverse force on the impeller 2. Through the setting of the adjusting component 4, when the impeller 2 rotates to drive the liquid to flow, the adjusting component 4 divides the outlet section of the pump body 1 into inner and outer rings, reducing the impact force of the high-speed flowing liquid on the inner wall of the pump body 1. And the setting of the adjusting member 42, when the impeller 2 rotates at a high speed, the first limit plate 46 is in contact with the outer wall of the impeller 2 to reduce the reverse force on the impeller 2, avoiding the impeller 2 from shaking due to the reverse force of the liquid when rotating at a high speed, and improving the service life of the equipment.

[0038] Reference Figure 5 , the regulating assembly 4 comprises: a positioning member 41, which is arranged on the inner wall of the water outlet section of the pump body 1 and is in an arc shape; the interior of the positioning member 41 is hollow. The regulating member 42 is slidably arranged in the positioning member 41, and its outer end protrudes from the end of the positioning member 41; when the liquid speed in the pump body 1 increases, the water flow is suitable for pushing the second regulating plate 45 to slide outward relative to the positioning member 41. The linkage gear 43 is rotatably arranged in the positioning member 41 and is respectively engaged with the two regulating members 42. When the second regulating plate 45 is pushed outward by the fluid, it is suitable for driving the linkage gear 43 to rotate circumferentially, and the linkage gear 43 is suitable for driving the first regulating plate 44 to slide outward synchronously.

[0039] Reference Figure 5 , the adjusting member 42 includes: a first adjusting plate 44 and a second adjusting plate 45, the first adjusting plate 44 and the second adjusting plate 45 are offset from each other, and the inner wall of the first adjusting plate 44 is slidably adapted to the inner wall of the positioning member 41. A first limiting plate 46 is provided at the outer end of the first adjusting plate 44, the first limiting plate 46 faces the impeller 2, and is close to the outer wall of the impeller 2. When the first adjusting plate 44 is pushed to move outward by the linkage gear 43, the first limiting plate 46 gradually moves toward the impeller 2; and when the reverse force of the fluid in the pump body 1 pushes the impeller 2 to shake in the direction away from the water outlet pipe 3, the first limiting plate 46 is suitable for abutting against the outer wall of the impeller 2 to limit the impeller 2 and prevent it from shaking, thereby improving the stability of the impeller 2 during rotation. Further, refer to the attached Figure 7A second limiting plate 47 is provided at the outer end of the second adjusting plate 45, and the second limiting plate 47 faces the impeller 2, and a gap is provided between the second limiting plate 47 and the impeller 2, wherein the liquid pushes the second limiting plate 47 to make the second adjusting plate 45 slide toward the water outlet pipe 3.

[0040] Reference Figure 5 and Figure 6 , the positioning member 41 is provided with a plurality of first through holes 48, and the first through holes 48 penetrate the positioning member 41; when the liquid velocity in the pump body 1 is at a normal value, the liquid will not push the second limit plate 47 to move in the direction of the water outlet pipe 3, at this time, the first through holes 48 and the second through holes 49 remain in a connected state, and when the impeller 2 rotates, the water flows through the inner and outer ring flow channels of the positioning member 41 to the water outlet pipe 3, and at the same time, part of the water flows through the first through holes 48 and the second through holes 49 and flows to the outer ring flow channel outside the positioning member 41. The provision of the first through holes 48 and the second through holes 49 prevents the positioning member 41 from being subjected to excessive water flow pressure. The first adjustment plate 44 is provided with a second through hole 49 corresponding to the first through hole 48, wherein when the first adjustment plate 44 slides outward, the first adjustment plate 44 is suitable for sealing the first through hole 48.

[0041] Reference Figure 8 A positioning column is provided in the positioning member 41, and the linkage gear 43 is rotatably sleeved on the outer wall of the positioning column; a torsion spring is sleeved on the outer wall of the positioning column, and the two ends of the torsion spring are respectively fixed to the inner wall of the positioning member 41 and the bottom wall of the linkage gear 43. The torsion spring is suitable for pushing the linkage gear 43 to shrink the first adjustment plate 44 and the second adjustment plate 45 in the positioning member 41.

[0042] Furthermore, the first adjustment plate 44 and the second adjustment plate 45 are arc-shaped and are coaxially arranged.

[0043] Some embodiments provide a pump, comprising: a pump body 1, in which an impeller 2 is rotatably disposed; The regulating assembly 4 is adapted to the impeller 2 and divides the water outlet section of the pump body 1 into inner and outer ring flow channels; the regulating assembly 4 includes: a positioning member 41, which is arranged on the inner wall of the water outlet section of the pump body 1 and is in an arc shape; an regulating member 42, which is slidably arranged in the positioning member 41, and the two regulating members 42 protrude from the two ends of the positioning member 41 respectively; a linkage gear 43, which is rotatably arranged in the positioning member 41 and is respectively engaged with the two regulating members 42; wherein, if the impeller 2 rotates normally, the liquid is suitable to pass through the regulating assembly 4 and flow to the outer ring flow channel; if the impeller 2 rotates at an overspeed, the regulating member 42 slides outward to reduce the reverse force on the impeller 2.

[0044] Furthermore, the adjusting member 42 includes: a first adjusting plate 44 and a second adjusting plate 45 , and the first adjusting plate 44 and the second adjusting plate 45 are offset from each other and are coaxially arranged.

[0045] Some embodiments provide a pump working method, including: when the impeller 2 rotates circumferentially, it is suitable for driving the liquid in the pump body 1 to flow through the regulating assembly 4 to the water outlet pipe 3; If the impeller 2 rotates normally, the liquid is suitable for passing through the regulating assembly 4 to flow to the outer ring flow channel, and the liquid in the inner and outer ring flow channels both flows to the water outlet pipe 3; If the impeller 2 rotates at an overspeed, the adjusting member 42 of the adjusting assembly 4 slides outward to reduce the reverse force on the impeller 2 .

[0046] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0048] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A sealing structure, characterized in that: include: Pump body (1); An impeller (2) rotatably disposed within the pump body (1); A water outlet pipe (3) arranged at the upper end of the pump body (1); A limiting assembly (30), which is arranged inside the water outlet pipe (3) and is suitable for limiting the connection of the water pipe; The limiting assembly (30) comprises: a limiting pipe (31) arranged on the inner wall of the water outlet pipe (3); The limiting plates (32) are in the shape of an arc, and a plurality of the limiting plates (32) are arranged circumferentially around the inner wall of the limiting tube (31) at equal intervals, and gaps are provided between adjacent limiting plates (32); After the connecting water pipe is inserted into the limiting pipe (31), the limiting plate (32) presses the connecting water pipe from the outside to the inside; During the process of inserting or removing the connecting water pipe from the limiting tube (31), the side wall of the limiting plate (32) is suitable for cleaning impurities on the outer wall of the connecting water pipe.

2. The sealing structure according to claim 1, characterized in that: The plurality of limit plates (32) are parallel to each other, and the distance between the upper portion of the limit plate (32) and the axis of the limit tube (31) is smaller than the distance between the lower portion of the limit plate (32) and the axis of the limit tube (31).

3. A pump, characterized in that: Using the sealing structure as claimed in claim 2, the pump comprises: An adjusting component (4) is arranged at the water outlet section of the pump body (1) with its upper end close to the water outlet pipe; The regulating component (4) is adapted to the impeller (2) and divides the water outlet section of the pump body (1) into inner and outer flow channels; Wherein, when the impeller (2) rotates normally, the liquid is suitable for passing through the regulating component (4) and flowing to the outer ring flow channel; If the impeller (2) rotates at an overspeed, the adjusting member (42) of the adjusting assembly (4) slides outwards to reduce the reverse force acting on the impeller (2).

4. A pump according to claim 3, characterized in that: The regulating assembly (4) comprises: a positioning member (41) which is arranged on the inner wall of the water outlet section of the pump body (1) and is in an arc shape; The adjusting member (42) is slidably disposed in the positioning member (41), and an outer end thereof protrudes from an end of the positioning member (41); A linkage gear (43) is rotatably disposed in the positioning member (41) and is respectively meshed with the two adjusting members (42).

5. A pump according to claim 4, characterized in that: The adjusting member (42) comprises a first adjusting plate (44) and a second adjusting plate (45), wherein the first adjusting plate (44) and the second adjusting plate (45) are offset from each other, and an inner wall of the first adjusting plate (44) is slidably fitted with an inner wall of the positioning member (41).

6. A pump according to claim 4, characterized in that: A first limiting plate (46) is provided at the outer end of the first adjustment plate (44), the first limiting plate (46) facing the impeller (2) and being close to the outer wall of the impeller (2).

7. A pump according to claim 5, characterized in that: A second limiting plate (47) is provided at the outer end of the second adjusting plate (45), the second limiting plate (47) faces the impeller (2), and a gap is provided between the second limiting plate (47) and the impeller (2), wherein liquid pushes the second limiting plate (47) to make the second adjusting plate (45) slide towards the water outlet pipe.

8. A pump according to claim 5, characterized in that: The positioning member (41) is provided with a plurality of first through holes (48), and the first through holes (48) penetrate the positioning member (41); The first adjustment plate (44) is provided with a second through hole (49) corresponding to the first through hole (48), wherein when the first adjustment plate (44) slides outwards, the first adjustment plate (44) is suitable for sealing the first through hole (48).

9. A pump according to claim 3, characterized in that: A positioning column is disposed inside the positioning member (41), and the linkage gear (43) is rotatably sleeved on the outer wall of the positioning column; The outer wall of the positioning column is sleeved with a torsion spring, and the two ends of the torsion spring are respectively fixed to the inner wall of the positioning member (41) and the bottom wall of the linkage gear (43); The first adjustment plate (44) and the second adjustment plate (45) are arc-shaped and are coaxially arranged.

10. A pump, characterized in that: A pump body (1) having an impeller (2) rotatably disposed therein; An adjusting component (4) adapted to the impeller (2) and dividing the water outlet section of the pump body (1) into inner and outer flow channels; The regulating assembly (4) comprises: a positioning member (41) which is arranged on the inner wall of the water outlet section of the pump body (1) and is in an arc shape; An adjusting member (42) is slidably disposed in the positioning member (41), and two adjusting members (42) protrude from two ends of the positioning member (41) respectively; A linkage gear (43) rotatably disposed in the positioning member (41) and respectively meshing with the two adjusting members (42); Wherein, when the impeller (2) rotates normally, the liquid is suitable for passing through the regulating component (4) and flowing to the outer ring flow channel; If the impeller (2) rotates at an overspeed, the regulating member (42) slides outwards to reduce the reverse force acting on the impeller (2).

11. A pump according to claim 10, characterized in that The adjusting member (42) comprises a first adjusting plate (44) and a second adjusting plate (45), wherein the first adjusting plate (44) and the second adjusting plate (45) are offset from each other and are coaxially arranged.

12. A method for operating a pump, characterized in that: A pump as claimed in any one of claims 1 to 2 or 3 to 9 or 10 to 11, comprising: when the impeller (2) rotates circumferentially, it is suitable for driving the liquid in the pump body (1) to flow through the regulating component (4) to the water outlet pipe; When the impeller (2) rotates normally, the liquid is suitable for passing through the regulating component (4) and flowing to the outer ring flow channel, and the liquid in the inner and outer ring flow channels both flows to the water outlet pipe; If the impeller (2) rotates at an overspeed, the adjusting member (42) of the adjusting assembly (4) slides outwards to reduce the reverse force acting on the impeller (2).

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