Structure for preventing mechanical injury of fingers of cleaning dual-purpose pump

Abstract

The utility model belongs to the technical field of water pumps, and relates to a finger mechanical injury prevention structure of a sewage disposal dual-purpose pump, which comprises a base, a water inlet channel arranged at the bottom of the base, an axially sliding bottom plate arranged below the base, a clean water inlet arranged at the bottom of the bottom plate, and a sewage inlet arranged on the side wall of the bottom plate. A blocking net for blocking the sewage inlet is arranged between the base and the bottom plate, the blocking net is in clearance fit with the bottom plate, and the blocking net is made of a flexible material and is folded and unfolded along with sliding of the bottom plate. According to the finger mechanical injury preventing structure of the dual-purpose pump for cleaning, potential safety hazards can be avoided, and meanwhile normal use of the pump is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pumps and relates to a structure for preventing mechanical damage to fingers of a dual-purpose pump for cleaning and sewage treatment. Background Art

[0002] Submersible pumps can be divided into sewage pumps and clean water pumps. The two types of pumps have different requirements for inlet particles. The sewage pump has a larger inlet diameter, which can pass water with relatively large impurities. Therefore, it cannot be used for use where particles need to be filtered. At this time, the user needs to switch to a clean water pump, but the clean water pump cannot pump water with large impurities because the inlet diameter is too small. In order to save the cost of use, technicians have developed a switchable clean and sewage pump.

[0003] Chinese invention patent application CN112302961A (publication date 2021-02-02) discloses a submersible pump that can switch between sewage and clean water extraction, including a fixedly connected outer shell and a base, a motor is arranged in the outer shell, an impeller driven by the motor is arranged in the base, a water inlet channel is arranged at the bottom end of the base, and a bottom plate slidably arranged in the base is arranged below the base, and a plurality of water inlets connected to the water inlet channel are arranged on the side walls of the base or the bottom plate. The base and the bottom plate are elastically supported by elastic parts, and a limit buckle and an elastic pull buckle are respectively arranged on the base and the bottom plate, and a plurality of limit grooves of different heights are arranged on the limit buckle. The elastic pull buckle cooperates with the limit groove and can switch between different limit grooves.

[0004] When this dual-purpose pump is in sewage mode, fingers can easily reach into the pump through the water inlet of the bottom plate and the water inlet channel of the base and touch the impeller, posing a safety hazard of mechanical injury to the fingers. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a structure for preventing mechanical damage to fingers of a dual-purpose pump for cleaning and sewage treatment, which can avoid potential safety hazards and does not affect the normal use of the pump.

[0006] In order to solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0007] A structure for preventing mechanical damage to fingers of a dual-purpose pump for cleaning and sewage, comprising a base, a water inlet channel being arranged at the bottom of the base, an axially sliding bottom plate being arranged below the base, a clean water inlet being arranged at the bottom of the bottom plate, and a sewage inlet being arranged at the side wall, a blocking net for shielding the sewage inlet being arranged between the base and the bottom plate, the blocking net being gap-matched with the bottom plate, the blocking net being made of a flexible material and folding and unfolding with the sliding of the bottom plate.

[0008] In the above-mentioned structure for preventing fingers from being mechanically damaged by a dual-purpose pump for cleaning and sewage, the blocking net is an annular structure, and a notch is arranged on the blocking net so as to be staggered with the sewage inlet.

[0009] In the above-mentioned structure for preventing mechanical damage to fingers of a dual-purpose pump for cleaning and sewage treatment, the blocking net is integrally formed, and the notch is formed on the blocking net; or, the blocking net is a split structure, and notches are formed between adjacent blocking nets.

[0010] In the above-mentioned structure for preventing fingers from being mechanically damaged by a dual-purpose pump for cleaning and sewage, a plurality of sewage inlets and gaps are provided.

[0011] In the above-mentioned structure for preventing fingers from being mechanically damaged by a dual-purpose pump for cleaning and sewage, the base, the bottom plate and the blocking net are coaxially arranged, and the blocking net is a conical ring that is smaller at the top and larger at the bottom.

[0012] In the above-mentioned structure for preventing fingers from being mechanically damaged by a dual-purpose pump for cleaning and sewage treatment, an upper ring connected to the base is arranged at the upper end of the blocking net, and a lower ring connected to the bottom plate is arranged at the lower end.

[0013] In the above-mentioned structure for preventing mechanical damage to fingers of a dual-purpose pump for cleaning and sewage, a plurality of blocks are arranged circumferentially on the upper ring, and a plurality of slots are arranged circumferentially on the bottom of the base, and the blocks and the slots are snap-fitted to form a fixed connection structure; a plurality of buckles are arranged circumferentially on the bottom of the base plate, and the buckles are snap-fitted to the outer edge of the lower ring to form a fixed connection structure.

[0014] In the above-mentioned structure for preventing mechanical damage to fingers of a dual-purpose pump for cleaning and sewage, the block is arranged on the inner side of the upper ring, the outer side of the slot and the end opposite to the block form an opening, and the end of the block opposite to the slot is provided with a guiding inclined surface for guiding the block to the slot. Furthermore, the gap between adjacent slots is larger than the circumferential dimension of the block.

[0015] In the above-mentioned structure for preventing mechanical damage to fingers of a dual-purpose pump for cleaning and sewage treatment, in the water cleaning mode, a gap is left between the base and the bottom plate, and the gap forms a storage space for the blocking net.

[0016] In the above-mentioned structure for preventing finger mechanical damage of a dual-purpose pump for cleaning and sewage, the water inlet channel is provided with an upper conical guide port extending downward, and the clean water inlet is provided with a lower conical guide port extending upward. In the clean water mode, the upper conical guide port and the lower conical guide port collide with each other and form the receiving space on the outside. The upper conical guide port and the lower conical guide port are both inclined inward from top to bottom.

[0017] In the above-mentioned structure for preventing fingers from being mechanically damaged by a dual-purpose pump for cleaning and sewage treatment, preferably, the blocking net is a gauze net or a rubber net.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The utility model provides a structure for preventing mechanical damage to fingers of a sewage pump. A blocking net is arranged between the base and the bottom plate. In sewage mode, after a finger is extended into the bottom plate from the sewage inlet, it will touch the blocking net and cannot be further extended into the interior of the water pump, thereby avoiding the risk of being damaged by the impeller.

[0020] 2. The barrier net of the utility model adopts a mesh structure and is also provided with gaps. In the sewage mode, it will not affect the water intake effect containing large particles of impurities; the barrier net of the utility model adopts a flexible material. When switching from the sewage mode to the clean water mode, the barrier net can be folded with the bottom plate without affecting the switching operation of the pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the front view of the utility model;

[0022] Figure 2 It is a cross-sectional view of the utility model;

[0023] Figure 3 This is a structural diagram of the storage space of the barrier net of the utility model;

[0024] Figure 4 It is a three-dimensional diagram of the barrier net of the utility model;

[0025] Figure 5 It is a three-dimensional diagram of the bottom plate of the utility model;

[0026] Figure 6 It is a three-dimensional diagram of the base of the utility model;

[0027] Figure numerals: 1. base; 11. water inlet channel; 12. slot; 13. upper conical guide port; 2. bottom plate; 21. fresh water inlet; 22. sewage inlet; 23. buckle; 24. lower conical guide port; 3. blocking net; 31. notch; 32. upper ring; 33. lower ring; 34. block; 35. guide slope; 4. storage space. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings. Figure 1-6 :

[0029] A structure for preventing mechanical damage to fingers of a dual-purpose pump for cleaning and sewage, comprising a base 1, a water inlet channel 11 is arranged at the bottom of the base 1, an axially sliding bottom plate 2 is arranged below the base 1, a clean water inlet 21 is arranged at the bottom of the bottom plate 2, and a sewage inlet 22 is arranged on the side wall, a blocking net 3 for blocking the sewage inlet 22 is arranged between the base 1 and the bottom plate 2, the blocking net 3 is gap-matched with the bottom plate 2, and the blocking net 3 is made of flexible material and folds and unfolds with the sliding of the bottom plate 2.

[0030] The usage of this embodiment is: in the clean water mode, the bottom plate 2 is slid upward (the sliding structure of the bottom plate 2 can adopt the common structure in the field), the base 1 blocks the sewage inlet 22 to close it, the blocking net 3 is folded with the sliding of the bottom plate 2, and the clean water enters from the clean water inlet 21, and then enters the water pump through the water inlet channel 11; in the sewage mode, the bottom plate 2 is slid downward, the sewage inlet 22 moves to the bottom of the base 1 and opens, the blocking net 3 is unfolded with the sliding of the bottom plate 2, and fingers are prevented from entering the water pump. The sewage containing large particles of impurities enters from the sewage inlet 22, and then enters the water pump through the blocking net 3 and the water inlet channel 11.

[0031] In order to better shield the sewage inlet 22 and make the installation structure of the blocking net 3 more stable, the blocking net 3 is an annular structure, and is provided with a gap 31 staggered with the sewage inlet 22, and the gap 31 is used for water inlet in the sewage mode.

[0032] The blocking net and the notch may adopt various structures. In the present embodiment, the blocking net 3 is formed in one piece, and the notch 31 is formed on the blocking net 3 .

[0033] In order to make the sewage containing large particles of impurities flow in more smoothly, a plurality of sewage inlets 22 and gaps 31 are provided.

[0034] Preferably, the base 1, the bottom plate 2 and the blocking net 3 are coaxially arranged, and the blocking net 3 is a conical ring that is smaller at the top and larger at the bottom.

[0035] The upper end of the blocking net 3 is provided with an upper ring 32 connected to the base 1 , and the lower end is provided with a lower ring 33 connected to the bottom plate 2 .

[0036] Furthermore, the connection structure between the upper ring 32 and the base 1, and the lower ring 33 and the bottom plate 2 is: the upper ring 32 is circumferentially provided with a plurality of blocks 34, the bottom of the base 1 is circumferentially provided with a plurality of slots 12, the blocks 34 are snap-fitted with the slots 12 to form a fixed connection structure; the bottom of the bottom plate 2 is circumferentially provided with a plurality of buckles 23, the buckles 23 are snap-fitted with the outer edge of the lower ring 33 to form a fixed connection structure.

[0037] Furthermore, the block 34 is arranged inside the upper ring 32, the outer side of the slot 12 and the end opposite to the block 34 form an opening, and the end of the block 34 opposite to the slot 12 is provided with a guide slope 35 for guiding the block 34 to the slot 12. Furthermore, the gap between adjacent slots 12 is larger than the circumferential dimension of the block 34.

[0038] The upper ring 32 and the base 1 are installed in the following manner: align the block 34 with the gap of the slot 12 and insert it, then rotate the upper ring 32 in a direction relative to the opening of the slot 12. During the rotation, the block 34 is respectively inserted into the corresponding slots 12 to complete the connection. The lower ring 33 and the bottom plate 2 are installed in the following manner: align the lower ring 33 with the circle where the buckle 23 is located and press it in. The lower ring 33 squeezes the clamping head of the buckle 23, and the buckle 23 undergoes elastic deformation. After the lower ring 33 passes over the clamping head of the buckle 23, the elastic deformation is restored, and the clamping head contacts the upper end face of the lower ring 33 to complete the connection.

[0039] In order to facilitate the storage of the blocking net 3, refer to the attached Figure 3 In the clear water mode, a gap is left between the base 1 and the bottom plate 2, and the gap forms a storage space 4 for the blocking net 3.

[0040] Furthermore, the water inlet channel 11 is provided with an upper conical guide opening 13 extending downward, and the clean water inlet 21 is provided with a lower conical guide opening 24 extending upward. In the clean water mode, the upper conical guide opening 13 and the lower conical guide opening 24 collide with each other and form the storage space 4 on the outside. The upper conical guide opening 13 and the lower conical guide opening 24 are both inclined inward from top to bottom.

[0041] In this embodiment, preferably, the blocking net 3 is a gauze net or a rubber net.

[0042] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A structure for preventing finger mechanical damage of a dual-purpose pump for cleaning and sewage, comprising a base (1), a water inlet channel (11) being arranged at the bottom of the base (1), an axially sliding bottom plate (2) being arranged below the base (1), a clean water inlet (21) being arranged at the bottom of the bottom plate (2), and a sewage inlet (22) being arranged on the side wall, characterized in that: A blocking net (3) for shielding the sewage inlet (22) is arranged between the base (1) and the bottom plate (2); the blocking net (3) and the bottom plate (2) are clearance-matched; the blocking net (3) is made of a flexible material and folds and unfolds as the bottom plate (2) slides.

2. The structure for preventing fingers from being mechanically damaged by a dual-purpose pump for cleaning and sewage treatment according to claim 1 is characterized in that: The blocking net (3) is an annular structure, and is provided with notches (31) that are staggered with the sewage inlet (22).

3. The structure for preventing fingers from being mechanically damaged by a dual-purpose pump for cleaning and sewage treatment according to claim 2 is characterized in that: The blocking net (3) is integrally formed, and the notch (31) is formed on the blocking net (3).

4. The structure for preventing fingers from being mechanically damaged by a dual-purpose pump for cleaning and sewage treatment according to claim 2 is characterized in that: The blocking net (3) is a split structure, and gaps (31) are formed between adjacent blocking nets (3).

5. The structure for preventing fingers from being mechanically damaged by a dual-purpose pump for cleaning and sewage treatment according to claim 2 is characterized in that: The base (1), the bottom plate (2) and the blocking net (3) are coaxially arranged, and the blocking net (3) is a conical ring that is smaller at the top and larger at the bottom.

6. The structure for preventing fingers from being mechanically damaged by a dual-purpose pump for cleaning and sewage treatment according to claim 1 is characterized in that: The upper end of the blocking net (3) is provided with an upper ring (32) connected to the base (1), and the lower end is provided with a lower ring (33) connected to the bottom plate (2).

7. The structure for preventing fingers from being mechanically damaged by a dual-purpose pump for cleaning and sewage treatment according to claim 6 is characterized in that: The upper ring (32) is provided with a plurality of clamping blocks (34) in the circumferential direction, the bottom of the base (1) is provided with a plurality of clamping grooves (12) in the circumferential direction, the clamping blocks (34) and the clamping grooves (12) are clamped together to form a fixed connection structure; the bottom of the bottom plate (2) is provided with a plurality of buckles (23) in the circumferential direction, the buckles (23) and the outer edge of the lower ring (33) are clamped together to form a fixed connection structure.

8. The structure for preventing fingers from being mechanically damaged by a dual-purpose pump for cleaning and sewage treatment according to claim 7 is characterized in that: The clamping block (34) is arranged on the inner side of the upper ring (32), the outer side of the clamping slot (12) and the end portion opposite to the clamping block (34) form an opening, and the end portion of the clamping block (34) opposite to the clamping slot (12) is provided with a guiding inclined surface (35) for guiding the clamping block (34) to the clamping slot (12).

9. The structure for preventing fingers from being mechanically damaged by a dual-purpose pump for cleaning and sewage treatment according to claim 1 is characterized in that: In the clear water mode, a gap is left between the base (1) and the bottom plate (2), and the gap forms a storage space (4) for the blocking net (3).

10. The structure for preventing fingers from being mechanically damaged by a dual-purpose pump for cleaning and sewage treatment according to claim 9, characterized in that: The water inlet channel (11) is provided with an upper conical guide opening (13) extending downward, and the clean water inlet (21) is provided with a lower conical guide opening (24) extending upward. In the clean water mode, the upper conical guide opening (13) and the lower conical guide opening (24) collide with each other and form the storage space (4) on the outside.

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