Filter device for water inlet of direct-current water pump

Abstract

The utility model discloses a filter device for a water inlet of a direct-current water pump, which comprises a water pump main body, and a connecting tower head is arranged at the end part of the water inlet of the water pump main body; comprising a fixing base, the inner periphery of the fixing base protrudes downwards to form a plurality of buckles clamped to the connecting tower head in a matched mode, and the fixing base is arranged at the upper end of the connecting tower head and is limited to be disengaged by the buckles; the filter further comprises a filter head, a plurality of buckling heads which correspond to the buckling grooves in position and are clamped in a matched mode are arranged at the bottom end of the filter head in the circumferential direction, the filter head is arranged at the upper end of the fixing base and is limited by the buckling heads to be disengaged, a plurality of filter through holes are evenly formed in the top wall of the filter head, and a plurality of limiting convex faces are arranged on the inner wall of the fixing base in the circumferential direction. The filtering structure is composed of the filtering head and the fixing base which are both formed by plastic injection molding, the structure is simple, and the mold cost and the material cost are extremely low; the whole device is combined on the water inlet of the water pump body through the buckle part for filtering operation, installation is more convenient and faster, and the application scene is wide.

Description

Technical Field

[0001] The utility model belongs to the technical field of direct current water pumps, in particular to a filter device for a water inlet of a direct current water pump. Background Art

[0002] A DC water pump is a machine that transports liquid or pressurizes liquid. Common DC water pumps are prone to sucking in solid foreign matter due to the negative pressure of the fluid during operation, which can cause the pump impeller to wear or get stuck and damage, making the pump unable to work properly. Currently, additional filtering structures are added to the water inlet of the pump for protective operations.

[0003] The commonly used filtering structures of DC water pumps on the market are mainly the following:

[0004] 1. Use a combination of threads and filter screens for filtering. Disadvantages: high component cost, complex structure, and can only be used when the water inlet has thread features;

[0005] 2. Sealed water tank filtration. Disadvantages: Using a sealed water tank is expensive and must be used in a sealed container, which limits the scenarios;

[0006] 3. Add filter layer to the water tank. Disadvantages: high mold cost and complex structure.

[0007] In view of this, a filter device for a water inlet of a DC water pump is proposed. Utility Model Content

[0008] In order to overcome the shortcomings of the prior art, the utility model aims to provide a filter device for the water inlet of a DC water pump.

[0009] The technical solution adopted by the utility model is as follows: a filter device for the water inlet of a DC water pump, comprising a water pump body, a connecting tower head being provided at the water inlet end thereof; comprising a fixing seat, the inner circumference of the fixing seat protruding downward to form a plurality of buckles adapted to be snapped onto the connecting tower head, the fixing seat being arranged at the upper end of the connecting tower head and restricted from being disengaged by the buckles, a plurality of buckle grooves being arranged at intervals along the circumferential direction of the fixing seat; further comprising a filter head, a plurality of buckles corresponding to the buckle groove positions and adapted to be snapped onto the bottom end of the filter head being arranged circumferentially, the filter head being arranged at the upper end of the fixing seat and restricted from being disengaged by the buckles, a plurality of filter through holes being evenly arranged on the top wall of the filter head.

[0010] In a preferred embodiment, a plurality of limiting convex surfaces are circumferentially provided on the inner wall of the fixing seat, and when the fixing seat is arranged on the connecting tower head, the bottom end surface of the limiting convex surface is in close contact with the upper end surface of the connecting tower head.

[0011] In a preferred embodiment, the buckle and the buckle head are both hook-shaped, and the bottom end surfaces of the buckle and the buckle head are both provided with inclined surfaces. The lower end of the buckle head passes through the buckle slot and is clamped on the bottom end surface of the fixing seat.

[0012] In a preferred embodiment, a plurality of filter grooves are evenly spaced apart on the outer peripheral surface of the filter head.

[0013] In a preferred embodiment, the filter head and the fixing seat are both made of plastic material and are integrally formed by injection molding.

[0014] In a preferred embodiment, the fixing seat body is in the shape of a circular ring, and the inner end surface of the fixing seat abuts against the tower surface of the connecting tower head.

[0015] In a preferred embodiment, the filter head is cylindrical and has a hollow cavity with an open bottom.

[0016] To sum up, due to the adoption of the above-mentioned technical scheme, the beneficial effects of the utility model are as follows: the filtering structure is composed of a filter head and a fixing seat which are both integrally injection-molded of plastics, with a simple structure and extremely low mold costs and material costs. At the same time, the whole can be combined on the water inlet of the water pump body through the snap-on part to perform filtering operations, and the installation is more convenient and quick, and there is no need to reserve threads or other connecting structures on the water pump body to achieve combined operation, and the application scenarios are more extensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall explosion three-dimensional structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the fixing seat and the filter head in the utility model;

[0020] Figure 4 It is a schematic diagram of the partial cross-sectional planar structure of the overall assembly of the utility model.

[0021] Markings in the figure: 1-water pump body, 101-connecting tower head, 2-fixed seat, 201-buckle groove, 202-clip, 203-limiting convex surface, 3-filter head, 301-filter through hole, 302-filter groove, 303-buckle head. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] A filter device for the water inlet of a DC water pump, referring to Figure 1-4 , including a water pump body 1, a connecting tower head 101 (similar to the shape of a pagoda, which will not be described in detail here) is provided at the water inlet end of the water pump body, including a fixing seat 2, the inner circumference of the fixing seat 2 protrudes downward to form a plurality of buckles 202 adapted to be snapped on the connecting tower head 101, the fixing seat 2 is arranged at the upper end of the connecting tower head 101 and is restricted from being disengaged by the buckles 202, and a plurality of buckle grooves 201 are arranged at intervals along the circumferential direction on the fixing seat 2, and also including a filter head 3, a plurality of buckle heads 303 corresponding to the positions of the buckle grooves 201 and adapted to be snapped are arranged at the bottom end circumferentially, the filter head 3 is arranged at the upper end of the fixing seat 2 and is restricted from being disengaged by the buckle heads 303, and a plurality of filtering through holes 301 are evenly opened on the top wall of the filter head 3, a filter head 3 with a buckle part and a fixing seat 3 are designed, and the filtering structure as a whole can be combined with the buckle part on the water inlet of the water pump body for filtering operation, so that the installation is more convenient and quick, and the combined operation can be realized without reserving threads or other connecting structures on the water pump body 1, and the application scenario is more extensive.

[0024] The number of the buckles 202 and the buckle heads 303 is at least 4 to ensure the strength after the combination, and the specific number is not limited here.

[0025] Furthermore, a plurality of filter grooves 302 are evenly spaced on the outer peripheral surface of the filter head 3. The additionally designed filter grooves 302 can ensure the filtering effect while not affecting the water volume discharged through the water inlet, and will not interfere with the normal use of the DC water pump.

[0026] Furthermore, a plurality of limiting convex surfaces 203 are provided on the circumference of the inner wall of the fixing seat 2. When the fixing seat 2 is arranged on the connecting tower head 101, the bottom end surface of the limiting convex surface 203 is in close contact with the upper end surface of the connecting tower head 101. The designed limiting convex surface 203 can limit the installation position of the fixing seat 2 on the water inlet of the water pump body 1, thereby ensuring the accuracy of the subsequent assembly.

[0027] Reference Figure 4 As shown, the buckle 202 and the buckle head 303 are both hook-shaped, and the bottom end surfaces of the buckle 202 and the buckle head 303 are provided with an inclined surface. The lower end of the buckle head 303 passes through the buckle groove 201 and is clamped on the bottom end surface of the fixing seat 2. Since the plastic itself is elastic, it can be deformed accordingly under the influence of the inclined surface when the buckle 202 and the buckle head 303 are inserted downward. When reaching the clamping position, the buckle 202 and the buckle head 303 return to their original state and can be respectively clamped under the tower surface of the connecting tower head 101 and under the buckle groove 201, thereby realizing the clamping operation.

[0028] Furthermore, the filter head 3 and the fixing seat 2 are both made of plastic and are formed by integral injection molding, so that the mold costs and material costs of the filter head 3 and the fixing seat 2 are extremely low. At the same time, since the filter head 3 and the fixing seat 2 are integrally molded, the strength of the snap-on part thereof is higher and it is not easy to break.

[0029] Furthermore, the main body of the fixing seat 2 is in the shape of a circular ring, the inner end face of the fixing seat 2 is against the tower surface connected to the tower head 101, the filter head 3 is cylindrical and has a hollow cavity with an opening at the bottom, and the water filtered by the filter tank 302 and the filter through hole 301 can flow to the water inlet along the hollow cavity and the central hole of the fixing seat 2, and will not affect the operation of the water pump body.

[0030] To sum up, the whole can be combined on the water inlet of the water pump body 1 through the snap-on part to perform filtering operation, the installation is more convenient and quick, and the combined operation can be realized without reserving threads or other connecting structures on the water pump body 1, and the application scenarios are wider. At the same time, the filtering structure is composed of a filter head 3 and a fixing seat 2 both of which are plastic injection molded. The structure is simple and the mold cost and material cost are extremely low, which is more practical.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter device for a DC water pump inlet, characterized in that: include: The water pump body has a connecting tower head at the water inlet end; A fixing seat, wherein the inner circumference of the fixing seat protrudes downward to form a plurality of buckles adapted to be engaged with the connecting tower head, the fixing seat is arranged at the upper end of the connecting tower head and is restricted from being disengaged by the buckles, and a plurality of buckle grooves are arranged on the fixing seat at intervals along the circumferential direction; The filter head has a plurality of buckles corresponding to and fitting with the buckle grooves at its bottom circumferentially, the filter head is arranged at the upper end of the fixing seat and is restricted from coming out by the buckles, and a plurality of filter through holes are evenly opened on the top wall of the filter head.

2. A filter device for a DC water pump water inlet as claimed in claim 1, characterized in that: The inner wall of the fixing seat is provided with a plurality of limiting convex surfaces in the circumferential direction. When the fixing seat is arranged on the connecting tower head, the bottom end surface of the limiting convex surface is in close contact with the upper end surface of the connecting tower head.

3. A filter device for a DC water pump water inlet as claimed in claim 1, characterized in that: The buckle and the buckle head are both hook-shaped, and the bottom end surfaces of the buckle and the buckle head are both provided with inclined surfaces. The lower end of the buckle head passes through the buckle slot and is clamped on the bottom end surface of the fixing seat.

4. A filter device for a DC water pump water inlet as claimed in claim 1, characterized in that: The outer peripheral surface of the filter head is also provided with a plurality of filter grooves at equal intervals.

5. A filter device for a DC water pump water inlet as claimed in claim 1, characterized in that: The filter head and the fixing seat are both made of plastic and are integrally formed by injection molding.

6. A filter device for a DC water pump water inlet as claimed in claim 1, characterized in that: The fixing seat body is in a circular ring shape, and the inner end surface of the fixing seat abuts against the tower surface of the connecting tower head.

7. A filter device for a DC water pump water inlet as claimed in claim 1, characterized in that: The filter head is cylindrical and has a hollow cavity with an open bottom.

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