An explosion-proof submersible pump

Abstract

This utility model belongs to the field of water pump technology and discloses an explosion-proof submersible pump, including a submersible pump body. A mounting base is welded to the bottom of the submersible pump body, and a base is detachably connected to the mounting base. Two first extension blocks and two second extension blocks are slidably connected to the base. The first extension blocks and the second extension blocks are arranged perpendicularly in the vertical projection direction. This utility model significantly reduces the pressure of the pump body on the silt by synergistically expanding the support area through the slidable first extension blocks and second extension blocks, effectively preventing the pump body from sinking into the soft foundation, ensuring that the submersible pump always maintains a stable working posture, and making the water inlet and the motor heat dissipation surface completely exposed to the flowing medium. This avoids the problem of heat dissipation channel blockage caused by siltation in traditional cylindrical submersible pumps, and fundamentally eliminates the risk of explosion caused by poor heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, and more specifically, to an explosion-proof submersible pump. Background Technology

[0002] Explosion-proof submersible pumps are special drainage equipment designed for flammable and explosive hazardous environments. Their core structure adopts an explosion-proof shell, spark-free components, and a reinforced sealing system that meet national explosion-proof standards, ensuring safe operation in environments where flammable liquids or flammable gases are transported. These pumps are widely used in high-risk scenarios such as petrochemical plants, coal mine tunnels, and oil depots for pumping out accumulated water. Their safety and reliability are directly related to the explosion-proof safety of the production site.

[0003] However, in actual operation, traditional explosion-proof submersible pumps, when working in riverbeds, mine pits, or sewage ponds with sediment, are prone to sinking into soft mud and sand due to their cylindrical shape and limited bottom contact area. This mud and sand can obstruct normal heat exchange between the motor housing and the cooling medium, causing the internal motor to heat up continuously. The accumulated heat may exceed the temperature range allowed by the explosion-proof housing, creating a high-temperature source inside that can ignite external explosive gases, posing a significant safety hazard.

[0004] In view of this, we propose an explosion-proof submersible pump. Utility Model Content

[0005] Technical problems to be solved The purpose of this utility model is to provide an explosion-proof submersible pump to solve the problem mentioned in the background art that traditional explosion-proof submersible pumps are prone to slipping into soft media such as mud and sand, which affects heat dissipation and leads to potential explosion safety hazards.

[0006] Technical solution

[0007] An explosion-proof submersible pump includes a submersible pump body, a mounting base welded to the bottom of the submersible pump body, a base detachably connected to the mounting base, and two first extension blocks and two second extension blocks slidably connected to the base. The first extension blocks and the second extension blocks are arranged perpendicularly in the vertical projection direction. The first extension blocks and the second extension blocks are used to increase the contact area between the submersible pump body and the working environment when extended to prevent the submersible pump body from sliding into mud and sand and affecting heat dissipation. The mounting base and the base are respectively provided with a first locking component and a second locking component. A first locking assembly is used to lock the mounting base and the base to enable a detachable connection between the mounting base and the base; The second locking assembly is used to lock the first and second extension blocks after adjustment, so that the first and second extension blocks can remain fixed relative to the base in both the slid-out and retracted states.

[0008] Preferably, the top of the base is fixedly connected to an installation strip with a T-shaped cross-section, and the bottom of the mounting base is provided with an installation groove that matches the size of the installation strip.

[0009] Preferably, locking grooves are provided at both ends of the mounting strip. The first locking component includes two locking rods that are elastically connected to the mounting base by a first spring and locking grooves provided at both ends of the mounting strip. The locking grooves are adapted to the size of the locking rods and are used to limit and lock the mounting base and the base when the mounting strip and the mounting groove are installed in place.

[0010] Preferably, a first slider is fixedly connected to the top of the first extension block, a second slider is fixedly connected to the top of the second extension block, and a first groove and a second groove adapted to the size of the first slider and the second slider are respectively provided on the bottom of the base. When the first extension block and the second extension block are retracted, their end faces fit against the end face of the base.

[0011] Preferably, the bottom surfaces of the first extension block, the second extension block, and the base are at the same height, the top of the first extension block is higher than the second extension block, and a channel is provided on the first extension block for passage of the second extension block and the second slider.

[0012] Preferably, the second locking assembly includes a mounting plate elastically connected to the base via a second spring and four limiting rods fixedly connected to the bottom of the mounting plate. Both the first extension block and the second extension block are provided with a first limiting hole and a second limiting hole. The first limiting hole is used to engage with the limiting rod to lock the first extension block and the second extension block in the retracted state, and the second limiting hole is used to engage with the limiting rod to lock the second extension block and the second extension block in the extended state.

[0013] Preferably, multiple connecting blocks are fixedly connected to the mounting plate, and multiple movable slots adapted to the connecting blocks are provided on the base. A lifting ring is connected to the upper part of the multiple connecting blocks. The lifting ring is used to lift the mounting plate and multiple limit rods to cooperate with the second locking component to switch the locking state. Beneficial effects

[0014] Compared with existing technologies, the advantages of this utility model are: This invention significantly reduces the pressure of the pump body on the mud and sand by using a sliding first extension block and a second extension block to expand the support area. This effectively prevents the pump body from sinking into the soft foundation, ensuring that the submersible pump always maintains a stable working posture. It also fully exposes the inlet and the motor heat dissipation surface to the flowing medium, avoiding the problem of blocked heat dissipation channels caused by mud and sand burial in traditional cylindrical pump bodies. This fundamentally eliminates the risk of explosion caused by poor heat dissipation.

[0015] This utility model enables tool-free one-click disassembly of the base assembly through the quick-release structure of the mounting strip and spring locking rod, greatly simplifying the maintenance process in silty environments. During use, the base can be quickly disassembled to remove accumulated silt or replace extended parts, improving convenience.

[0016] This invention utilizes the precise cooperation between the limiting rod and the dual-state positioning hole to provide dual mechanical locking for the retracted state and working position of the extension block, effectively resisting the risk of displacement caused by water flow impact or vibration. In addition, the linkage design of the lifting ring allows the user to simultaneously release the constraints of all limiting rods in a single operation, and the setting of multiple limiting rods further enhances the stability of the device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the submersible pump body and base of this utility model; Figure 2 This is a diagram showing the mounting base and the base of this utility model when disassembled; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a diagram showing the extension block of this utility model in a contracted state. Figure 5 This is a diagram showing the extension block of this utility model in its extended state. Figure 6 This is an exploded view of the mounting plate and extension block of this utility model.

[0018] Figure 7 This is a diagram showing the positional relationship between the first extension block and the second extension block of this utility model.

[0019] The following are the labels in the diagram: 1. Submersible pump body; 11. Mounting base; 12. Base; 13. Mounting strip; 14. Mounting groove; 15. First extension block; 16. Second extension block; 17. First slider; 18. First slide groove; 19. Second slider; 110. Second slide groove; 111. Channel; 2. First locking assembly; 21. Locking rod; 22. First spring; 23. Locking groove; 3. Second locking assembly; 31. First limiting hole; 32. Second limiting hole; 33. Limiting rod; 34. Mounting plate; 35. Second spring; 36. Connecting block; 37. Movable groove; 38. Lifting ring. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figure 1-7 This utility model provides a technical solution: An explosion-proof submersible pump includes a pump body. A mounting base 11 is welded to the bottom of the pump body. A base 12 is detachably connected to the mounting base 11. Two first extension blocks 15 and two second extension blocks 16 are slidably connected to the base 12. The first extension blocks 15 and second extension blocks 16 are perpendicularly arranged in the vertical projection direction. The first extension blocks 15 and second extension blocks 16 are used to increase the contact area between the pump body and the working environment when extended to prevent the pump body 1 from slipping into mud and sand, thus affecting heat dissipation. A first locking component 2 and a second locking component 3 are respectively provided on the mounting base 11 and the base 12. The first locking component 2 is used to lock the pump body. The mounting base 11 and the base 12 are designed to achieve a detachable connection between the mounting base 11 and the base 12; the second locking assembly 3 is used to lock the first extension block 15 and the second extension block 16 after adjustment, so that the first extension block 15 and the second extension block 16 can remain fixed relative to the base 12 in both the sliding and retracted states. With this configuration, through the cooperation of the modular detachable base 12 and the adjustable support structure, the support area can be dynamically adapted to the working environment while ensuring the rigidity of the explosion-proof pump's main structure. The sliding setting of the extension blocks solves the problem of heat dissipation failure caused by siltation, and directly eliminates the risk of explosion caused by poor heat dissipation.

[0023] The base 12 has a T-shaped mounting strip 13 fixedly connected to its top. The bottom of the mounting base 11 has a mounting groove 14 that matches the size of the mounting strip 13. This design ensures that the mounting strip 13 can be embedded in the mounting groove 14 to form a rigid connection that resists torsion. It also simplifies the underwater installation process and allows the device to be adapted to bases 12 of different sizes with the mounting strip 13 installed to adapt to different scenarios such as riverbeds and mines, significantly improving the adaptability of the equipment in different environments.

[0024] Specifically, locking grooves 23 are provided at both ends of the mounting strip 13. The first locking assembly 2 includes two locking rods 21 that are elastically connected to the mounting base 11 by a first spring 22 and locking grooves 23 provided at both ends of the mounting strip 13. The locking grooves 23 are adapted to the size of the locking rods 21. They are used to limit and lock the mounting base 11 and the base 12 when the mounting strip 13 and the mounting groove 14 are installed in place. With this setting, the locking rods 21 are driven to cooperate with the locking grooves 23 by the spring preload, so that the base 12 can be quickly locked and disassembled without auxiliary tools, which improves the convenience of disassembly, assembly and maintenance.

[0025] Secondly, a first slider 17 is fixedly connected to the top of the first extension block 15, and a second slider 19 is fixedly connected to the top of the second extension block 16. The bottom of the base 12 is provided with a first groove 18 and a second groove 110 that are adapted to the size of the first slider 17 and the second slider 19, respectively. When the first extension block 15 and the second extension block 16 are retracted, their end faces are in contact with the end face of the base 12. In this way, the first groove 18 and the second groove 110 can limit the horizontal movement trajectory of the first extension block 15 and the second extension block 16, eliminating the risk of deflection.

[0026] Furthermore, the bottom surfaces of the first extension block 15, the second extension block 16, and the base 12 are at the same height, and the top of the first extension block 15 is higher than the second extension block 16. A channel 111 is provided on the first extension block 15 for the second extension block 16 and the second slider 19 to pass through. This arrangement can compress the storage volume of the base 12, making the base 12 easier to transport and store. The design of the channel 111 ensures that the two sliders do not interfere with each other when they slide crosswise.

[0027] Furthermore, the second locking assembly 3 includes a mounting plate 34 elastically connected to the base 12 via a second spring 35 and four limiting rods 33 fixedly connected to the bottom of the mounting plate 34. The first extension block 15 and the second extension block 16 are each provided with a first limiting hole 31 and a second limiting hole 32. The first limiting hole 31 is used to engage with the limiting rod 33 to lock the first extension block 15 and the second extension block 16 in the retracted state. The second limiting hole 32 is used to engage with the limiting rod 33 to lock the second extension block 16 in the extended state. This arrangement allows the locking rod 21 to provide locking functions in both retracted and extended working positions simultaneously. The vertical insertion of the limiting rod 33 into the first limiting hole 31 or the second limiting hole 32 can form a horizontal limit, improving the stability of the device.

[0028] Specifically, multiple connecting blocks 36 are fixedly connected to the mounting plate 34, and multiple movable slots 37 adapted to the connecting blocks 36 are provided on the base 12. A lifting ring 38 is connected to the upper part of the multiple connecting blocks 36. The lifting ring 38 is used to lift the mounting plate 34 and multiple limit rods 33 to cooperate with the second locking component 3 to switch the locking state. This setting allows the lifting ring 38 to simultaneously control the four limit rods 33 to unlock synchronously. Lifting with one hand releases all degrees of freedom of the extension blocks, improving the convenience of unlocking operation.

[0029] Working principle: When the explosion-proof submersible pump operates in riverbeds, mine pits, or sewage ponds with sediment deposits, the lifting ring 38 first lifts the mounting plate 34, compressing the second spring 35. This causes the four limiting rods 33 to simultaneously disengage from the limiting holes on the first extension block 15 and the second extension block 16, releasing the horizontal constraint on the extension blocks. Subsequently, the operator horizontally pushes the first extension block 15 and the second extension block 16 outward along the first slide groove 18 and the second slide groove 110, allowing the two sets of extension blocks to fully unfold, increasing the support area of ​​the base 12 and significantly reducing the pressure of the pump body on the sediment. After releasing the lifting ring 38, the second spring 35 drives the mounting plate 34 to reset, and the limiting rods 33 precisely insert into the second limiting hole 32 of the extension block to achieve mechanical locking in the extended state. At this time, the pump body, with the four orthogonal extension blocks and the base 12 together forming a stable support platform, effectively prevents it from sinking into the soft sediment layer, ensuring that the inlet and motor heat dissipation surface are fully exposed to the flowing medium.

[0030] When maintenance or transportation is required, lifting the lifting ring 38 causes the limiting rod 33 to disengage from the second limiting hole 32, and the extension block slides back to the retracted position. The limiting rod 33 automatically engages with the first limiting hole 31 to complete the storage and locking. When disassembling the base 12, lifting the locking rods 21 on both sides of the mounting base 11 compresses the first spring 22 and the base 12 can be pulled out directly, thus separating the T-shaped mounting strip 13 from the mounting groove 14. This quick-release structure requires no tools throughout the process, and the integrity of the explosion-proof submersible pump's outer shell is maintained after the locking surfaces are separated.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof submersible pump comprising a submersible pump body, characterized by: The bottom of the submersible pump body is welded with a mounting base (11), and a base (12) is detachably connected to the mounting base (11). Two first extension blocks (15) and two second extension blocks (16) are slidably connected to the base (12). The first extension blocks (15) and the second extension blocks (16) are vertically arranged in the vertical projection direction. The first extension blocks (15) and the second extension blocks (16) are used to increase the contact area between the submersible pump body and the working environment when extended to prevent the submersible pump body (1) from sliding into mud and sand and affecting heat dissipation. The mounting base (11) and the base (12) are respectively provided with a first locking component (2) and a second locking component (3). The first locking assembly (2) is used to lock the mounting base (11) and the base (12) to enable a detachable connection between the mounting base (11) and the base (12); The second locking assembly (3) is used to lock the first extension block (15) and the second extension block (16) after adjustment, so that the first extension block (15) and the second extension block (16) can remain fixed relative to the base (12) in both the sliding and retracted states.

2. The explosion-proof submersible pump of claim 1, wherein: The top of the base (12) is fixedly connected to an installation strip (13) with a T-shaped cross section, and the bottom of the mounting base (11) is provided with an installation groove (14) that matches the size of the installation strip (13).

3. The explosion-proof submersible pump of claim 2, wherein: Both ends of the mounting strip (13) are provided with locking grooves (23). The first locking assembly (2) includes two locking rods (21) that are elastically connected to the mounting base (11) by a first spring (22) and locking grooves (23) at both ends of the mounting strip (13). The locking grooves (23) are adapted to the size of the locking rods (21) and are used to limit and lock the mounting base (11) and the base (12) when the mounting strip (13) and the mounting groove (14) are installed in place.

4. The explosion-proof submersible pump of claim 3, wherein: The top of the first extension block (15) is fixedly connected to a first slider (17), and the top of the second extension block (16) is fixedly connected to a second slider (19). The bottom of the base (12) is provided with a first groove (18) and a second groove (110) that are respectively adapted to the size of the first slider (17) and the second slider (19). When the first extension block (15) and the second extension block (16) are retracted, their end faces are in contact with the end face of the base (12).

5. The explosion-proof submersible pump of claim 4, wherein: The bottom surface of the first extension block (15), the bottom surface of the second extension block (16), and the bottom surface of the base (12) are at the same height. The top of the first extension block (15) is higher than the second extension block (16). A channel (111) is opened on the first extension block (15) for passage of the second extension block (16) and the second slider (19).

6. The explosion-proof submersible pump of claim 5, wherein: The second locking assembly (3) includes a mounting plate (34) elastically connected to the base (12) by a second spring (35) and four limiting rods (33) fixedly connected to the bottom of the mounting plate (34). The first extension block (15) and the second extension block (16) are provided with a first limiting hole (31) and a second limiting hole (32). The first limiting hole (31) is used to cooperate with the limiting rod (33) to lock the first extension block (15) and the second extension block (16) in the retracted state. The second limiting hole (32) is used to cooperate with the limiting rod (33) to lock the second extension block (16) and the second extension block (16) in the extended state.

7. The explosion-proof submersible pump of claim 6, wherein: Multiple connecting blocks (36) are fixedly connected to the mounting plate (34). Multiple movable slots (37) adapted to the connecting blocks (36) are provided on the base (12). A lifting ring (38) is connected to the multiple connecting blocks (36). The lifting ring (38) is used to lift the mounting plate (34) and multiple limit rods (33) to cooperate with the second locking assembly (3) to switch the locking state.

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