A submersible pump that is easy to submerge

Abstract

The present invention relates to a submersible pump that is easy to dive, comprising an upper shell, an intermediate shell, a base, a pump cover, a water outlet joint, a pump unit and a sphere. The upper shell, the intermediate shell and the base are connected in sequence from top to bottom to form a receiving cavity. An annular top-contact flange is extended outward from the peripheral side wall of the pump cover. The pump cover is built into the receiving cavity, and the annular top-contact flange directly contacts the inner side wall of the intermediate shell to separate the receiving cavity into an upper receiving sub-chamber and a lower receiving sub-chamber. An exhaust hole is extended downward from the top wall of the annular top-contact flange. A mounting column is extended downward from the bottom wall of the annular top-contact flange in direct alignment with the exhaust hole. A sliding cavity for placing the sphere and communicating with the exhaust hole is provided in the mounting column. A limit flange for limiting the lower displacement limit position of the sphere is provided in the sliding cavity. An exhaust slit communicating with the sliding cavity is provided on the peripheral side wall of the mounting column.

Description

Technical Field

[0001] The invention relates to the technical field of water pump manufacturing, in particular to a submersible pump which is easy to dive. Background Art

[0002] Submersible pumps are important equipment for deep well water extraction. When in use, the entire unit dives into the water to extract groundwater to the surface. It is used for domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship loading, and can also be used for fountain landscapes.

[0003] In the prior art, the submersible pump is not provided with a submersible exhaust structure. As a result, when the submersible pump is submerged, the air in the chamber cannot be discharged in a timely and effective manner, which inevitably affects its submersible speed to a certain extent, and even causes the axial tilt and scraping against the well wall in the early stage of submergence. Therefore, it is urgent for technicians to solve the above problems. Summary of the invention

[0004] Therefore, in view of the above-mentioned existing problems and defects, the designers of the present invention collected relevant information, conducted multiple evaluations and considerations, and continued to experiment and modify the submersible pump after many years of R&D experience in this industry, which ultimately led to the emergence of the submersible pump that is easy to dive.

[0005] In order to solve the above technical problems, the present invention relates to a submersible pump that is easy to dive, which includes an upper shell, an intermediate shell, a base, a pump cover, a water outlet joint, a pump unit and a sphere. The upper shell, the intermediate shell and the base are connected in sequence from top to bottom, and together form a accommodating cavity. An annular top-contact flange continues to extend outward from the peripheral side wall of the pump cover. The pump cover is built into the accommodating cavity, and the annular top-contact flange directly contacts the inner side wall of the intermediate shell to separate the accommodating cavity into an upper accommodating sub-chamber and a lower accommodating sub-chamber. An exhaust hole extends downward from the top wall of the annular top-contact flange to communicate the upper accommodating sub-chamber and the lower accommodating sub-chamber. Aligned with the exhaust hole, a mounting column continues to extend downward from the bottom wall of the annular top-contact flange. A sliding cavity that matches the shape of the sphere and communicates with the exhaust hole is provided in the mounting column. A limited position flange is provided in the sliding cavity. The limit flange is used to limit the lower displacement limit position of the ball, and is formed by the inner side wall of the sliding cavity extending inward. An exhaust slit communicating with the sliding cavity is provided on the peripheral side wall of the mounting column. The ball is placed in the sliding cavity, and when it is acted upon by water buoyancy, it can slide freely along the sliding cavity to achieve the blocking of the exhaust hole.

[0006] As a further improvement of the technical solution of the present invention, the number of the exhaust slits is set to be multiple and is evenly distributed circumferentially around the central axis of the mounting column.

[0007] As a further improvement of the technical solution of the present invention, assuming that the inner diameter of the sliding cavity is set to d1, the inner diameter of the limiting flange is set to d2, and the inner diameter of the sphere is set to d3, then 0.2mm≤d1-d3≤0.3mm, 0.1mm≤d3-d2≤0.15mm.

[0008] As a further improvement of the technical solution of the present invention, the submersible pump that is easy to submerge further includes a sealing ring. An annular mounting groove is extended inwardly from the peripheral side wall surrounding the annular top contact flange to be used for embedding the sealing ring. When the pump cover is assembled in place relative to the accommodating cavity, the sealing ring is always elastically pressed between the intermediate housing and the annular top contact flange.

[0009] Compared with the submersible pump of the traditional design structure, in the technical solution disclosed in the present invention, a submersible exhaust structure is added to its pump cover. When the submersible pump is performing the submersible operation, the air remaining in the lower accommodating chamber enters the upper accommodating chamber through the exhaust hole under the action of the water squeezing force, thereby facilitating the filling speed of the lower accommodating chamber with water, and then facilitating the submersible pump to perform the submersible operation. In this process, the exhaust hole is always maintained in an open state because the air blowing force acting on the sphere is less than its own weight; as the depth of the submersible pump continues to increase, the sphere floats along the sliding chamber due to the buoyancy of the water until the exhaust hole is completely blocked. At this time, the upper accommodating chamber is in an isolated state relative to the lower accommodating chamber, avoiding the occurrence of water erosion on the components in the upper accommodating chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 It is a three-dimensional schematic diagram of a submersible pump that is easy to submerge in the present invention.

[0012] Figure 2 yes Figure 1 Front view of .

[0013] Figure 3 It is a three-dimensional schematic diagram of the submersible pump that is easy to submerge in the present invention (after hiding the upper housing).

[0014] Figure 4 yes Figure 1 Top view of the .

[0015] Figure 5 yes Figure 4BB cross-sectional view.

[0016] Figure 6 yes Figure 5 A partial enlarged view of I.

[0017] Figure 7 The present invention is a stereoscopic schematic diagram of a pump cover in a submersible pump that is easy to submerge, from one viewing angle.

[0018] Figure 8 It is a stereoscopic schematic diagram of another viewing angle of the pump cover of the easily submersible submersible pump of the present invention.

[0019] Fig. 9 yes Figure 8 A partial enlarged view of II.

[0020] 1-upper casing; 2-middle casing; 3-base; 4-pump cover; 41-annular top contact flange; 411-exhaust hole; 412-mounting column; 4121-sliding cavity; 41211-limiting flange; 4122-exhaust gap; 413-annular mounting groove; 5-water outlet section; 6-water pumping unit; 61-motor; 62-multi-stage impeller assembly; 7-sphere; 8-accommodating cavity; 81-upper accommodating sub-cavity; 82-lower accommodating sub-cavity; 9-sealing ring. DETAILED DESCRIPTION

[0021] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0022] The technical solution disclosed in the present invention is further described in detail below in conjunction with specific embodiments. Figure 1-9As shown in the figure, the submersible pump that is easy to dive is mainly composed of several parts such as an upper shell 1, an intermediate shell 2, a base 3, a pump cover 4, a water outlet section 5, a pump unit 6 and a sphere 7. Among them, the upper shell 1, the intermediate shell 2 and the base 3 are connected in sequence from top to bottom, and together form a receiving cavity 8. An annular top-contact flange 41 continues to extend outward from the peripheral side wall of the pump cover 4. The pump cover 4 is built into the receiving cavity 8, and the annular top-contact flange 41 directly contacts the inner side wall of the intermediate shell 2 to separate the receiving cavity 8 into an upper receiving sub-chamber 81 and a lower receiving sub-chamber 82. An exhaust hole 411 extends downward from the top wall of the annular top-contact flange 41 to communicate the upper receiving sub-chamber 81 and the lower receiving sub-chamber 82. In alignment with the exhaust hole 411, a mounting column 412 continues to extend downward from the bottom wall of the annular top-contact flange 41. A sliding cavity 4121 adapted to the shape of the sphere 7 and in communication with the exhaust hole 411 is provided in the mounting column 412. A limiting flange 41211 is provided in the sliding cavity 4121. The limiting flange 41211 is used to limit the lower displacement limit position of the sphere 7, and is formed by the inner wall of the sliding cavity 4121 extending inwardly. Assuming that the inner diameter value of the limiting flange is set to d2 and the inner diameter value of the sphere is set to d3, it is preferably 0.1mm≤d3-d2≤0.15mm. An exhaust slit 4122 in communication with the sliding cavity 4121 is provided on the peripheral side wall of the mounting column 412. The sphere 7 is built into the sliding cavity 4121, and when it is subjected to the buoyancy of water, it can slide freely along the sliding cavity 4121 to achieve the blocking of the exhaust hole 411.

[0023] By adopting the above-mentioned technical solution, when the submersible pump is performing a diving operation, the air remaining in the lower accommodating chamber 82 enters into the upper accommodating chamber 81 through the exhaust hole 411 under the action of the water squeezing pressure, thereby facilitating the increase of the water filling speed of the lower accommodating chamber 82, and further facilitating the diving operation of the submersible pump. In this process, since the air blowing force acting on the sphere 7 is less than its own weight, the exhaust hole 411 is always maintained in an open state; as the submersible pump continues to descend to an increasing depth, the sphere 7 floats upward along the sliding chamber 4121 due to the buoyancy of the water until the exhaust hole 411 is completely blocked. At this time, the upper accommodating chamber 81 is in an isolated state relative to the lower accommodating chamber 82, thereby preventing water from corroding the components in the upper accommodating chamber 81.

[0024] In order to further increase the flow rate of the residual air in the lower receiving chamber 82 toward the sliding chamber 4121, the design structure of the mounting column 412 needs to be optimized and improved, such as Figure 8 , 9As shown in the figure, the number of the exhaust slits 4122 is set to 2, and they are symmetrically arranged around the central axis of the mounting column 412. In addition, when the operation of inserting the ball 7 into the sliding cavity 4121 is performed, due to the existence of the exhaust slits 4122, in the process of gradually passing over the limiting flange 41211 from bottom to top and pushing it into the sliding cavity 4121, the exhaust slits 4122 are subjected to the lateral pushing force and adaptively expand, and when the ball 7 is completely inserted into the sliding cavity 4121, the exhaust slits 4122 are restored and deformed, and at this time, the limiting flange 41211 stably and reliably limits the lower displacement limit position of the ball 7.

[0025] During the trial stage of the trial production of the submersible pump, it was found that the relative matching relationship between the sliding cavity 4121 and the sphere 7 has a crucial influence on the free sliding movement of the sphere 7. For example, when the inner diameter value of the sliding cavity 4121 is too small, the sphere 7 is very likely to get stuck when sliding inside it, which will cause the exhaust hole 411 to be unable to be effectively blocked; and when the inner diameter value of the sliding cavity 4121 is too large, it is difficult for the sphere 7 to ensure the alignment accuracy with the exhaust hole 411 during the process of sliding toward the exhaust hole 411, which will also cause the exhaust hole 411 to be unable to be effectively blocked. In view of this, in this embodiment, the size of the sliding cavity 4121 and the sphere 7 is also controlled, as follows: Assuming that the inner diameter value of the sliding cavity 4121 is set to d1, 0.2mm≤d1-d3≤0.3mm.

[0026] Finally, it should be noted that Figure 4 , 5 It can also be seen from Figures 6 that the submersible pump that is easy to dive is also equipped with a sealing ring 9 according to different actual application scenarios (for example, when the submersible pump is used in situations where the diving depth exceeds 5m). Correspondingly, an annular mounting groove 413 extends inwardly around the peripheral side wall of the annular top-contact flange 41 to embed the sealing ring 9. When the pump cover 4 is assembled in place relative to the accommodating cavity 8, the sealing ring 9 is always elastically pressed between the intermediate shell 2 and the annular top-contact flange 41. In this way, the sealing reliability between the upper accommodating chamber 81 and the lower accommodating chamber 82 can be effectively improved to prevent water from entering the upper accommodating chamber 81 through the annular assembly gap between the pump cover 4 and the intermediate shell 2 when the exhaust hole 411 is completely blocked.

[0027] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A submersible pump that is easy to submerge, characterized in that: It includes an upper shell, an intermediate shell, a base, a pump cover, a water outlet joint, a water pump unit and a sphere; the upper shell, the intermediate shell and the base are connected in sequence from top to bottom to form a receiving cavity; An annular contact flange continues to extend outward from the peripheral side wall of the pump cover; the pump cover is built into the accommodating cavity, and the annular contact flange directly contacts the inner side wall of the intermediate shell to divide the accommodating cavity into an upper accommodating sub-cavity and a lower accommodating sub-cavity; An exhaust hole extends downward from the top wall of the annular top-contact flange to communicate the upper accommodating chamber and the lower accommodating chamber; a mounting column extends downward from the bottom wall of the annular top-contact flange in direct alignment with the exhaust hole; a sliding cavity adapted to the shape of the sphere and communicating with the exhaust hole is provided in the mounting column; a limiting flange is provided in the sliding cavity; the limiting flange is used to limit the lower displacement limit position of the sphere, and is formed by continuing to extend inward from the inner side wall of the sliding cavity; an exhaust slit communicating with the sliding cavity is provided on the peripheral side wall of the mounting column; the sphere is placed in the The slidable member is in the sliding cavity, and when it is acted upon by water buoyancy, it can freely slide along the sliding cavity to achieve the blocking of the exhaust hole; the number of the exhaust slits is set to be multiple, and they are evenly distributed circumferentially around the central axis of the mounting column; assuming that the inner diameter value of the sliding cavity is set to d1, the inner diameter value of the limiting flange is set to d2, and the inner diameter value of the sphere is set to d3, then 0.2mm≤d1-d3≤0.3mm, 0.1mm≤d3-d2≤0.15mm; it also includes a sealing ring; an annular mounting groove is extended inwardly from the peripheral side wall around the annular top contact flange to be used for embedding the sealing ring; When the pump cover is assembled in place relative to the accommodating cavity, the sealing ring is always elastically pressed between the intermediate housing and the annular top-contact flange.

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