Water-accumulation-preventing structure for pump

Abstract

The application discloses a kind of water-logging prevention structures for pump, belong to pump unit field.The application includes base and control box, and the axial end of base is provided with unblocking structure, and the control box has first box body, and the axial end of base is installed in first box body, and the position corresponding to unblocking structure on first box body is provided with through cooperation through-hole;The end of base is provided with multiple groups of outward protruding mounting column, and the bottom of first box body is correspondingly provided with matched seat mounting hole, and mounting column is embedded in seat mounting hole, and after being installed in place, the end surface of base and the bottom surface of first box body are communicated with at least 0.5mm above axial drainage gap, and the cooperation through-hole on first box body is communicated with the drainage gap.The application makes the water that is discharged outward from unblocking threaded hole on base can be directly discharged from drainage gap, and cannot be accumulated between base and first box body for a long time, realizes the effective water-logging prevention of pump body, and improves safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pump units, in particular to a water accumulation prevention structure for pumps. BACKGROUND

[0002] Water pump devices such as centrifugal pumps and submersible pumps are widely used in the fields of drainage, irrigation, industrial circulation, etc. In actual operation, the impeller is often easily entangled or clogged by fibers, silt, and sundries, resulting in performance degradation or even complete jamming. To solve this problem, the industry usually sets mechanical anti-clogging structures such as unblocking holes, backflushing holes, and cleaning holes on the pump body or the base, and inserts tools from the holes to manually clean or perform reverse flushing and air exhaust operations to restore the normal operation of the pump.

[0003] However, the applicant has found in long-term research and practice that although the use of anti-clogging structures has solved the problem of impeller clogging to some extent, during air exhaust or unblocking operations, the liquid in the pump cavity will inevitably flow out along the unblocking hole channel. These outflowing liquids cannot be directly and completely discharged to the outside, but are easily accumulated between the base and the electrical control box, resulting in the inability to timely and automatically discharge the accumulated water. The long-term retention of the accumulated liquid not only easily causes corrosion to the metal parts such as the base and fasteners, affecting the service life, but also has the risk of seeping into the motor, easily causing winding short circuit and even motor burning, resulting in huge safety risks and economic losses. Therefore, it is crucial to further solve the problem of water accumulation during operation while achieving efficient anti-clogging and unblocking functions, in order to improve the long-term operation reliability and safety of the water pump. SUMMARY

[0004] 1. Technical problem to be solved by the application

[0005] In view of the problem of water accumulation during the unblocking operation of the pump body in the prior art, the present application provides a water accumulation prevention structure for pumps, which can effectively solve the problem of water accumulation, timely discharge the accumulated water, and improve the long-term operation reliability and safety of the water pump.

[0006] 2. Technical solution

[0007] To achieve the above-mentioned purposes, the technical solution provided by the present application is as follows:

[0008] The water accumulation prevention structure for pumps of the present application comprises a base and a control box. The base is provided with an outwardly extending unblocking structure at the axial end. The control box has a first box body which is fitted and installed at the axial end of the base. A through fitting hole is provided on the first box body corresponding to the position of the unblocking structure. The unblocking structure can be opened by passing through the fitting hole on the first box body.

[0009] The end of the base is provided with a plurality of outwardly protruding mounting columns, and the bottom of the first box body is correspondingly provided with a plurality of seat mounting holes matched with the mounting columns. The mounting columns are embedded in the seat mounting holes and communicate with the outside through a drainage gap of at least 0.5 mm in the axial direction between the end face of the base and the bottom face of the first box body after being mounted in place. A matching through hole in the first box body communicates with the drainage gap.

[0010] Further, the control box further comprises a second box body distributed on the radial outer side of the base, and the second box body is electrically connected with the first box body, and the electric control elements are respectively installed in the first box body and the second box body.

[0011] Further, a plurality of drainage grooves are spaced apart around the matching through hole on the bottom face of the first box body, and the drainage grooves extend to the matching through hole and the outside.

[0012] Further, an operation cylinder is arranged in the first box body in a direction away from the base, and an operation through hole is formed in the operation cylinder. The unblocking structure on the base can be opened through the operation through hole. The operation through hole is a horn hole with an opening gradually increasing in the axial direction towards the base.

[0013] Further, a seat through hole is arranged at the center of the end of the base for the unblocking structure to protrude outward, and an interface seat is further arranged on the base outside the seat through hole. The wall surface on the side of the interface seat facing the seat through hole is a slope part B, and the height of the slope part B gradually decreases from the center to both ends in the length direction.

[0014] Further, a seat boss is further arranged on the base outside the seat through hole. The wall surface on the side of the seat boss facing the seat through hole is a slope part A, and the height of the slope part A gradually decreases from the center to both ends in the length direction. The seat boss and the interface seat are distributed on both sides of the seat through hole in the radial direction.

[0015] Further, a cylinder protruding ring is formed on the inner side of the top end of the operation cylinder, and a sealing groove is formed around the outer periphery of the cylinder protruding ring on the end face of the operation cylinder. A box cover is assembled on the first box body, and an outer cover through hole is arranged on the box cover for the operation cylinder to protrude out. An outer cover protruding ring is arranged around the inner side of the outer cover through hole, and the outer cover protruding ring is embedded in the sealing groove and sealed.

[0016] Further, a stepped column is arranged on the inner side of the first box body, and a seat mounting hole is formed in the stepped column. The stepped column comprises a stepped part A at the lower part and a stepped part B at the upper part. The hole diameter of the stepped part B is smaller than the hole diameter of the stepped part A. The mounting column is assembled in the stepped part A and limited at the top. A sealing ring groove is arranged around the outer periphery of the seat mounting hole on the bottom of the first box body. A ring-shaped protrusion is correspondingly arranged on the outer periphery of the mounting column, embedded in the sealing ring groove and sealed.

[0017] Further, the drainage grooves extend away from the second box body from the edge of the matching through hole of the first box body.

[0018] Further, the circumferential wall surface of the base is an inclined wall surface gradually decreasing in diameter in the axial direction towards the first box body, and the matching bottom surface of the bottom of the second box body is an adapted inclined wall surface.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the technical scheme provided by the present application has the following beneficial effects:

[0021] (1) The anti-accumulation structure of the present application, the first box body is installed at the axial end of the base, and the positioning and matching of the mounting column and the seat mounting hole effectively control and reasonably increase the axial gap between the end surface of the base and the bottom surface of the first box body. The axial gap forms a drainage channel, so that the water flowing out of the unblocking threaded hole on the base can be directly drained from the drainage gap, and will not accumulate between the base and the first box body for a long time, realizing effective anti-accumulation of the pump body and improving safety.

[0022] (2) The anti-accumulation structure of the present application, the bottom surface of the first box body is provided with a plurality of drainage grooves around the matching through hole, which can more effectively guide the accumulated water to drain, and the groove depth further expands the depth of the drainage gap, providing more sufficient drainage space.

[0023] (3) The anti-accumulation structure of the present application, the operating cylinder in the first box body is provided with a horn hole, when water flows into the operating cylinder through the unblocking threaded hole, the horn hole wall can effectively guide the water flow to the rear end of the drainage gap and flow out.

[0024] (4) The anti-accumulation structure of the present application, the interface seat and the seat boss on the base are both provided with a flow guiding inclined surface part, which can further adapt to the multi-angle installation scene of the pump body, especially when the second box body is located at the left and right side positions, the seat boss or the interface seat is correspondingly located at the bottom, facilitating the realization of bottom flow guiding. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the assembly structure of the base and the control box of the pump unit in the embodiment;

[0026] Figure 2 It is a schematic diagram of the assembly cross-sectional structure of the base and the control box in the embodiment;

[0027] Figure 3 It is a schematic diagram of the local enlarged cross-sectional structure of the unblocking structure in the pump unit in the embodiment

[0028] Figure 4 It is a schematic diagram of the structure of the base in the embodiment;

[0029] Figure 5 It is a schematic diagram of the structure of the first box body of the control box in the embodiment;

[0030] Figure 6 Another perspective view of the first box body of the control box in the embodiment;

[0031] Figure 7 An enlarged view of the operating cylinder in the first box body;

[0032] Figure 8 A structure view of the insulation box cover in the embodiment;

[0033] Figure 9 Another perspective view of the insulation box cover in the embodiment;

[0034] Figure 10 A structure view of the metal box cover in the embodiment;

[0035] Figure 11 Another perspective view of the metal box cover in the embodiment;

[0036] Figure 12 A sectional view of the fastening installation position of the control box and the base in the embodiment.

[0037] Explanation of the reference numerals in the schematic view:

[0038] 100, base; 101, installation column; 102, seat through hole; 103, seat boss; 104, interface seat; 105, inclined surface part A; 106, inclined surface part B; 107, positioning rib; 110, drainage gap;

[0039] 200, first box body; 201, drainage groove; 210, step column; 211, step part A; 212, step part B; 213, seat installation hole;

[0040] 220, operating cylinder; 221, operating through hole; 222, sealing groove; 223, cylinder protruding ring;

[0041] 300, box cover; 310, insulation inner cover; 311, inner cover through hole; 312, inner cover boss; 313, inner cover installation hole; 314, press-fit part; 315, heat dissipation hole;

[0042] 320, metal outer cover; 321, outer cover through hole; 322, outer cover protruding ring; 323, outer cover boss; 324, outer cover installation hole; 325, heat dissipation block;

[0043] 400, fastener;

[0044] 500, shielding sleeve; 501, gasket; 502, sealing ring; 503, unblocking screw; 504, sheath;

[0045] 600, electric control board; 700, second box body; 701, mating bottom surface; 702, positioning groove; 703, hooking part. DETAILED DESCRIPTION

[0046] For further understanding of this application, the application will be described in further detail together with the drawings.

[0047] In the description of this application, it needs to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting this application.

[0048] In addition, it needs to be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements; the terms "first", "second", "third", "fourth" should be understood broadly, only for distinguishing feature names, and do not mean a specific sequential relationship. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0049] The application will be further described below in conjunction with the embodiments.

[0050] Embodiment

[0051] In conjunction with Figures 1-12 As shown in the drawings, the embodiment provides a pump water accumulation prevention structure, which comprises a base 100 and a control box, and the axial end of the base 100 is provided with an outwardly extending unblocking structure, and the unblocking structure is provided with a threaded hole and a unblocking screw 503 screwed therein. Figures 1-3 As shown in the drawings, the unblocking structure is provided to effectively perform unblocking operation on the internal structure of the base 100. More specifically, in this embodiment, the pump is a shield pump, and a shield sleeve 500 is arranged inside the base 100. The top end of the base 100 is provided with a seat through hole 102, and the shield sleeve 500 extends outwardly beyond the seat through hole 102. The shield sleeve 500 and the base 100 are sealed by a gasket 501. The top of the shield sleeve 500 is provided with a threaded hole and the unblocking screw 503 is screwed therein, and the two are sealed by a sealing ring 502. The outer side of the unblocking screw 503 is further provided with a sheath 504, which is buckled on the outer side of the unblocking screw 503 to achieve fixed connection with the unblocking screw 503. In this way, when the unblocking screw 503 is disassembled and unblocked, the sheath 504 can provide effective protection, facilitate the disassembly and assembly of the unblocking screw 503, and avoid direct contact with the unblocking screw 503 to cause burns and the like.

[0052] The axial end of the base 100 in the embodiment is also provided with a control box, specifically, the control box has a first box body 200, which is fitted and installed at the axial end of the base 100, and in practice, the two are fastened and connected through locking screws. In the embodiment, in correspondence with the unblocking structure, the first box body 200 is provided with a penetrating fitting through hole, i.e., an operation through hole 221, at the position corresponding to the unblocking structure. The unblocking structure can be opened by passing through the fitting through hole on the first box body 200, i.e., the fitting through hole on the first box body 200 can allow the sheath 504 to extend. The applicant has found in practice that when the unblocking operation is performed, part of the water in the base 100 may flow outwards through the unblocking threaded hole on the shielding sleeve 500, and accumulate between the base 100 and the first box body 200 and cannot be discharged, and the water flow may enter the machine body for a long time to cause the machine to burn, etc.

[0053] The embodiment is further optimized for the installation of the base 100 and the first box body 200 in correspondence with the cooperation of the control box and the unblocking structure, in combination with Figure 4 and Figure 5 As shown in the drawings, the end of the base 100 is provided with a plurality of outwardly protruding mounting columns 101, and the bottom of the first box body 200 is correspondingly provided with a seat mounting hole 213 matched therewith. The mounting columns 101 are fitted and embedded in the seat mounting hole 213, and after the two are fitted and installed in place, the end face of the base 100 and the bottom surface of the first box body 200 have an axial drainage gap 110 of at least 0.5 mm or more in communication with the outside, and the fitting through hole on the first box body 200 is in communication with the drainage gap 110. Unlike the conventional close cooperation, the embodiment utilizes the positioning cooperation of the mounting columns 101 and the seat mounting hole 213 to effectively control and reasonably increase the axial gap between the end face of the base 100 and the bottom surface of the first box body 200, and utilizes the axial gap to form a drainage channel, so that the water flowing outwards through the unblocking threaded hole on the base 100 can be directly drained away from the drainage gap 110, and will not be accumulated between the base 100 and the first box body 200 for a long time, thereby achieving effective water accumulation prevention of the pump body and improving safety.

[0054] Especially need to be explained is that in combination with Figure 1 and Figure 5As shown, the control box in the embodiment further comprises a second box body 700, wherein the second box body 700 is distributed on the radial outer side of the base 100, and the second box body 700 is electrically connected with the first box body 200, and the electric control elements are respectively installed in the first box body 200 and the second box body 700. In practice, the first box body 200 and the second box body 700 jointly constitute an electric control box, and the two can be integrally formed or independently formed, both of which are provided with the electric control board 600 and are electrically connected, and jointly control the pump body. And the two box bodies are located at the axial end of the base 100, and the other is located on the radial outer side of the base 100. The traditional control box is divided and arranged in the form of double box bodies distributed in different directions and different positions, which can effectively reduce the volume occupation of each box body and each electric control board, especially reduce the height occupation in the axial direction, thereby effectively improving the installation space adaptability of the pump body. Compared with the traditional single box body radial side installation or axial end surface installation, the installation flexibility is effectively provided, which can adapt to the installation in a narrow space. Based on this, the embodiment especially considers the adaptation of the axial first box body 200 installation and the unblocking structure and the problem of water accumulation.

[0055] Further preferably, a plurality of drainage grooves 201 are arranged around the matching through hole on the bottom surface of the first box body 200, and the drainage grooves 201 extend to the communication between the matching through hole and the outside. The drainage grooves 201 can more effectively guide the water accumulation to be discharged, and the groove depth further expands the depth of the drainage gap 110, providing more sufficient drainage space. Figure 5 As shown, further preferably, the drainage groove 201 extends away from the second box body 700 from the edge of the matching through hole of the first box body 200. In practice, the pump body is installed to avoid the second box body 700 downward, and the second box body 700 is preferably placed upward as shown Figure 1 As shown, or the second box body 700 can be placed on the side, and the drainage groove 201 is arranged to extend away from the second box body 700, which can more meet the water flow direction in the actual installation state, and meet the multi-angle installation state, and facilitate the rapid drainage of water flow from the bottom or the side.

[0056] Further, the first box body 200 is provided with an operation cylinder 220 extending inwardly away from the base 100, and an operation through hole 221 is formed in the operation cylinder 220, which is the matching through hole described above. The operation through hole 221 is a horn hole that gradually increases in opening in the axial direction towards the base 100. In combination with Figure 3 As shown, when the water flows into the operation cylinder 220 through the unblocking threaded hole, the horn hole wall can be effectively guided to promote the water flow to the rear end of the drainage gap 110.

[0057] In combination with Figure 4As shown, the center of the end of the base 100 in this embodiment is provided with a seat through hole 102 for the unblocking structure and the shielding sleeve 500 to protrude outwardly from the base 100. The outer side of the seat through hole 102 is further provided with an outwardly axially protruding interface seat 104 for installing a adapter, so that the power supply pin in the base 100 can extend out to electrically connect with the first box body 200. The wall surface of the interface seat 104 facing the seat through hole 102 is a beveled portion B106, which gradually decreases in height from the center to both ends along the length direction, thereby forming a water flow guide bevel and promoting the outward drainage of accumulated water.

[0058] Similarly, further, the outer side of the seat through hole 102 of the base 100 is further provided with an outwardly axially protruding seat boss 103. The wall surface of the seat boss 103 facing the seat through hole 102 is a beveled portion A105, which gradually decreases in height from the center to both ends along the length direction, thereby forming a water flow guide bevel and facilitating the rapid outward drainage of accumulated water. The seat boss 103 and the interface seat 104 are distributed on the two sides of the radial direction of the seat through hole 102, and the seat boss 103 and the interface seat 104 are also respectively located at the both end positions of the radial width of the second box body 700, that is, the seat boss 103 and the interface seat 104 are not in the same radial direction of the first box body 200 as the second box body 700. In combination Figure 4 and Figure 5 As shown, the first box body 200 is further provided with a matching recess cavity at the position corresponding to the seat boss 103. The water flow guide bevels are respectively arranged on the seat boss 103 and the interface seat 104, which can further adapt to the multi-angle installation scene of the pump body. Especially when the second box body 700 is located at the left and right side positions, the seat boss 103 or the interface seat 104 is correspondingly located at the bottom, thereby facilitating the bottom water flow guide.

[0059] In order to further improve the water accumulation prevention performance and improve the operation safety, in combination Figures 6-10 As shown, further, the top end of the operation cylinder 220 is formed with a cylinder protruding ring 223 inwardly, and the end surface of the operation cylinder 220 is formed with a sealing groove 222 around the outer periphery of the cylinder protruding ring 223. The first box body 200 is assembled with a box cover 300, and the box cover 300 is correspondingly provided with an outer cover through hole 321 for the operation cylinder 220 to extend out, and an outer cover protruding ring 322 is arranged around the inner side of the outer cover through hole 321. The outer cover protruding ring 322 is matched and embedded in the sealing groove 222 and sealed, and the sealing groove 222 is filled with soft glue for sealing. The outer cover protruding ring 322 is correspondingly sleeved on the outer periphery of the cylinder protruding ring 223, forming an inner and outer nested structure and a primary seal, reducing the inflow of water in the operation cylinder 220 into the inside of the first box body 200. By using the cooperation of the sealing groove 222 and the sealing glue, the sealing effect is further improved, and the reverse entry of accumulated water into the first box body 200 is avoided.

[0060] Furthermore, in this embodiment, the circumferential wall of the base 100 is an inclined wall with a diameter that gradually decreases along the axial direction towards the first housing 200, and the mating bottom surface 701 of the second housing 700 is set as a matching inclined wall; specifically, with Figure 5 Taking the case where the bottom surface 701 is located at the upper end of the first box 200 as an example, the height of the bottom surface 701 gradually increases in the direction away from the first box 200, so that it can be installed in a way that fits the inclined wall of the base 100. The installation gap between the two can also form a drainage channel. Even if the user makes a mistake in the installation direction and mistakenly places the second box 700 downwards, the water generated during the unblocking operation will flow downwards to the bottom surface 701, and the bottom surface 701 can also guide it outwards and discharge it out of the machine body, thus having a certain anti-water accumulation performance.

[0061] Furthermore, in this embodiment, the second box 700 and the first box 200 are integrally formed. The first box 200 and the base 100 are fixedly installed using bolts as fasteners 400. To ensure the installation stability of the second box 700, the circumferential wall of the base 100 is provided with axially extending positioning ribs 107, and the bottom of the second box 700 is provided with corresponding positioning grooves 702. Figure 4 and Figure 5 As shown, specifically, positioning ribs 107 are provided on both sides of the wall of the base 100, and hook portions 703 extending inward are provided on both sides of the bottom surface 701, thereby forming a positioning groove 702 between the hook portions 703 on both sides. During installation, the positioning ribs 107 on both sides are embedded into the positioning groove 702 and cooperate with the hook portions 703 on both sides to achieve the guiding installation and stable assembly of the second box 700. In addition, preferably, the radial width between the positioning ribs 107 on both sides is basically adapted to the radial width of the second box 700, and the radial extension width of the corresponding positioning groove 702 basically covers the width of the second box 700. The hook portions 703 are respectively provided at the edge of the radial width of the bottom surface 701. In practice, if the user mistakenly installs the second box 700 downward, the water flowing out during the unblocking process can also flow as much as possible into the bottom surface 701 for drainage.

[0062] To achieve effective positioning and installation between the first housing 200 and the base 100, and to meet drainage requirements. Combined with Figure 6 and Figure 7As shown, the first box body 200 is provided with a stepped column 210 on the inner side, and a seat mounting hole 213 is formed in the stepped column 210. The stepped column 210 includes a stepped portion A 211 at the lower part and a stepped portion B 212 at the upper part. The hole diameter of the stepped portion B 212 is smaller than that of the stepped portion A 211. The seat mounting hole 213 is a stepped hole with a large lower part and a small upper part. The mounting column 101 is correspondingly assembled in the stepped portion A 211, and the top is limited by the stepped hole to ensure accurate positioning by using the mounting column 101 and the seat mounting hole 213, and to ensure the formation and size control of the drainage gap 110. The stepped portion B 212 with a smaller size is also used as a positioning column for the electric control panel 600 in the box body, reducing the space occupation of the electric control panel 600. The limiting ribs are arranged on the outer side wall surface of the stepped portion B 212 by passing through the positioning hole on the electric control panel 600, so that the electric control panel 600 can be stably sleeved on the stepped portion B 212. In addition, the first box body 200 is also provided with a sealing ring groove around the outer periphery of the seat mounting hole 213. The mounting column 101 is correspondingly provided with an annular protrusion which is embedded in the sealing ring groove and filled with soft glue for sealing, further ensuring the sealing between the first box body 200 and the base 100, and avoiding the generation of condensed water.

[0063] The first box body 200 in the embodiment is further described below. The box cover 300 includes an insulating inner cover 310 and a metal outer cover 320. The insulating inner cover 310 is combined with the metal outer cover 320 by means of a plurality of screws 330. Figures 8 to 12 As shown, the insulating inner cover 310 is correspondingly provided with an inner cover through hole 311 in the center for the unblocking structure to pass through. The insulating inner cover 310 is also provided with a through heat dissipation hole 315 in the area corresponding to the power device on the internal electric control panel 600. The insulating inner cover 310 is also provided with an inner cover boss 312 protruding downward in the position corresponding to the seat mounting hole 213. An inner cover mounting hole 313 is formed in the inner cover boss 312. The inner cover boss 312 is also provided with a downward protruding pressing portion 314 around the outer periphery of the inner cover mounting hole 313. The electric control panel 600 below is pressed and fixed by using the pressing portion 314 during installation, reducing the stress damage to the electric control panel 600.

[0064] Corresponding to the insulating inner cover 310, the metal outer cover 320 is provided with an outer cover through hole 321 in the center for the unblocking structure to pass through. The outer cover through hole 321 is formed with the outer cover protruding ring 322 mentioned above. The metal outer cover 320 is provided with a protruding heat dissipation block 325 in the area corresponding to the heat dissipation hole 315. The heat dissipation block 325 is correspondingly embedded in the heat dissipation hole 315 for effective contact and heat dissipation of the power device. The metal outer cover 320 is also provided with an outer cover boss 323 protruding downward in the position corresponding to the inner cover boss 312. An outer cover mounting hole 324 is formed in the outer cover boss 323. As shown in the figure, Figure 12As shown, the fastener 400 is used to threadedly fasten the outer cover mounting hole 324, the inner cover mounting hole 313, the step post 210 and the mounting post 101 in sequence, so that the stable cooperation and fixation of the multi-layer structure components are achieved by using a single bolt.

[0065] The scope of the protection of the application is defined by the claims. Those skilled in the art will readily recognize from the disclosure herein that alternative structures to those disclosed can be used as suitable replacements for the disclosed structures, and that the disclosed embodiments can be combined to produce new embodiments, all of which fall within the scope of the appended claims.

Claims

1. A water accumulation prevention structure for a pump, comprising a base (100) and a control box, characterized in that: the axial end of the base (100) is provided with an outwardly extending unblocking structure, and the control box has a first box body (200) which is fitted and installed at the axial end of the base (100), and the first box body (200) is provided with a through fitting through hole at a position corresponding to the unblocking structure, and the unblocking structure can be opened by passing through the fitting through hole on the first box body (200); the end of the base (100) is provided with a plurality of outwardly protruding mounting columns (101), and the bottom of the first box body (200) is correspondingly provided with a matching seat mounting hole (213), the mounting column (101) is fitted and embedded into the seat mounting hole (213), and after being mounted in place, the end face of the base (100) and the bottom face of the first box body (200) are connected in communication with the outside through an axial drainage gap (110) of at least 0.5 mm or more, and the fitting through hole on the first box body (200) is in communication with the drainage gap (110); when water flows into the fitting through hole, the water flows out through the rear end drainage gap (110).

2. The water accumulation preventing structure for a pump according to claim 1, characterized by: The control box further comprises a second box body (700) which is distributed on the radial outside of the base (100), and the second box body (700) is electrically connected with the first box body (200), and electric control elements are respectively installed in the first box body (200) and the second box body (700).

3. The water accumulation preventing structure for a pump according to claim 2, characterized in that: The bottom face of the first box body (200) is provided with a plurality of drainage grooves (201) which are spaced apart around the fitting through hole, and the drainage grooves (201) extend to connect the fitting through hole with the outside.

4. A water accumulation preventing structure for a pump according to any one of claims 1 to 3, characterized in that: An operating cylinder (220) is arranged in the first box body (200) in a direction away from the base (100), and the operating cylinder (220) is formed with an operating through hole (221) which can be passed through to open the unblocking structure on the base (100); the operating through hole (221) is a horn hole which is gradually increased in opening in a direction axially towards the base (100).

5. The water accumulation preventing structure for a pump according to any one of claims 1 to 3, characterized in that: A seat through hole (102) is arranged at the center of the end of the base (100) for the outward protrusion of the unblocking structure, and an outwardly protruding interface seat (104) is further arranged on the outside of the seat through hole (102) on the base (100), and the wall face of the interface seat (104) facing one side of the seat through hole (102) is a bevel portion B (106) which is gradually reduced in height along the length direction from the center to both ends.

6. The water accumulation preventing structure for a pump according to claim 5, characterized in that: An outwardly protruding seat boss (103) is further arranged on the outside of the seat through hole (102) on the base (100), and the wall face of the seat boss (103) facing one side of the seat through hole (102) is a bevel portion A (105) which is gradually reduced in height along the length direction from the center to both ends; the seat boss (103) and the interface seat (104) are distributed on both sides in the radial direction of the seat through hole (102).

7. The water accumulation preventing structure for a pump according to claim 4, characterized by: The operation cylinder (220) top end is formed with a cylinder protruding ring (223) inside, and a sealing groove (222) is formed around the outer periphery of the cylinder protruding ring (223) on the end face of the operation cylinder (220); the first box body (200) is assembled with a box cover (300), and a cover through hole (321) is provided on the box cover (300) for the operation cylinder (220) to extend out, and a cover protruding ring (322) is provided around the inside of the cover through hole (321), and the cover protruding ring (322) is fitted and embedded in the sealing groove (222) and sealed.

8. The water accumulation preventing structure for a pump according to claim 1, characterized by: A step column (210) is provided inside the first box body (200), and a seat mounting hole (213) is formed inside the step column (210), and the step column (210) includes a step portion A (211) at the lower part and a step portion B (212) at the upper part, the aperture of the step portion B (212) is smaller than the aperture of the step portion A (211), and the mounting column (101) is assembled in the step portion A (211) and is limited at the top; a sealing ring groove is provided around the outer periphery of the seat mounting hole (213) at the bottom of the first box body (200), and a ring-shaped protrusion is provided on the outer periphery of the mounting column (101) and is fitted and embedded in the sealing ring groove and sealed.

9. The water accumulation preventing structure for a pump according to claim 3, characterized by: The drainage groove (201) extends away from the second box body (700) from the edge of the matching through hole of the first box body (200).

10. The water accumulation preventing structure for a pump according to claim 2, characterized by: The circumferential wall surface of the machine base (100) is an inclined wall surface with a gradually decreasing diameter in the direction of approaching the first box body (200) in the axial direction, and the matching bottom surface (701) of the second box body (700) is provided as a matching inclined wall surface.

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