Anti-blocking dredging device for water suction pump head

Abstract

The utility model belongs to the technical field of water suction pumps, and discloses a water suction pump head anti-blocking dredging device which comprises a protective shell, the two sides of an inner cavity of the protective shell are fixedly connected with an input water pipe connecting pipe and a water suction pump head connecting pipe respectively, and an inner cavity in the middle of the protective shell is movably connected with a middle cylindrical block. The outer surface of the middle cylindrical block is sleeved with an elastic spring. According to the filter screen cleaning device disclosed by the utility model, through the cooperation of the middle cylindrical block, the limiting rod, the filter screen plate, the tension spring and other structures, the device has the effect of conveniently cleaning a blocked filter screen; at the moment, descending of the middle cylindrical block can drive a limiting rod and a filter screen plate to move downwards and break away from the interior of the protective shell, impurities in an inner cavity of the middle cylindrical block close to one side of the input water pipe connecting pipe can be pushed out, and through the operation, an operator can clean the filter screen more rapidly and conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pumps, in particular to a water pump head anti-blocking and dredging device. Background Art

[0002] A water pump refers to an instrument with one inlet and one outlet for suction (water) and one for exhaust (water), and can continuously form a vacuum or negative pressure at the inlet; a slight positive pressure is formed at the exhaust nozzle. The working medium can be gas or liquid. It is a small instrument, often called a micro vacuum water pump, micro water pump, or micro self-priming water pump. Relevant parameters and experimental data can be found online.

[0003] At present, when people use a water pump to pump water, in order to prevent the water pump body from being damaged by impurities carried in the water during operation, people often install a filter at the connection between the water pump head and the input water pipe to filter out impurities. However, when the water pump works for a long time, the impurities blocked by the filter will cause the filter to be blocked. At this time, people need to clean the filter. When removing the filter, the connection between the input water pipe and the water pump head needs to be removed, which is cumbersome and not conducive to people's quick cleaning of the filter. Therefore, a water pump head anti-blocking and drainage device is proposed to solve the problems raised in the background technology. Utility Model Content

[0004] (1) Technical problems solved

[0005] In order to solve the problems raised in the above background technology, the utility model provides a water pump head anti-blocking and drainage device, which solves the problem of cumbersome disassembly and cleaning of the filter screen, and makes the structure have the advantage of facilitating the cleaning of the blocked filter screen.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a pump head anti-blocking and drainage device comprising a protective housing, an inner cavity of which is fixedly connected to two sides of a water inlet pipe and a pump head connecting pipe, respectively; a central cylindrical block movably connected to the inner cavity of the protective housing; an elastic spring sleeved on the outer surface of the central cylindrical block; a limit rod fixedly connected to the top and bottom of the inner cavity of the elastic spring; a filter screen and a tension spring sleeved on the outer surface of the limit rod; and a support frame fixedly connected to the bottom of the protective housing.

[0008] Preferably, one end of the input water pipe connecting pipe away from the water pump head connecting pipe is connected to the input water pipe, and one end of the water pump head connecting pipe away from the input water pipe connecting pipe is connected to the water pump head.

[0009] Preferably, the maximum diameter of the top of the intermediate cylindrical block is greater than the diameter of the inner cavity of the top of the protective shell, and the diameter of the bottom of the intermediate cylindrical block is greater than the diameter of the inner cavity of the bottom of the protective shell.

[0010] Preferably, the top and bottom of the elastic spring are fixedly connected to the middle cylindrical block and the protective shell respectively.

[0011] Preferably, the water input pipe connecting pipe and the water pump head connecting pipe are connected through the inner cavity at the bottom of the middle cylindrical block.

[0012] Preferably, the top and bottom of the inner cavity of the filter screen plate are movably connected to the outer surfaces of the two limiting rods at the upper and lower ends respectively.

[0013] Preferably, both ends of the tension spring are fixedly connected to the middle cylindrical block and the tension spring respectively.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The utility model cooperates with the structures such as the middle cylindrical block, the limit rod, the filter screen plate and the tension spring, so that the device has the function of facilitating the cleaning of the clogged filter screen. By pressing the middle cylindrical block downward, the descent of the middle cylindrical block will drive the limit rod and the filter screen plate to move downward and out of the interior of the protective shell. At this time, the middle part of the outer surface of the middle cylindrical block will block the inner cavity of the protective shell where the input water pipe connecting pipe and the water pump head connecting pipe are connected. Then the operator pushes the filter screen plate to the side away from the tension spring on the side close to the tension spring. At this time, impurities in the inner cavity of the middle cylindrical block close to the side of the input water pipe connecting pipe will be pushed out. Through the above operation, the operator can clean the filter screen more quickly and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a front cross-sectional structural diagram of the present utility model;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is an exploded view of the middle cylindrical block of the utility model.

[0021] In the figure: 1. Protective shell; 2. Water input pipe connecting pipe; 3. Water pump head connecting pipe; 4. Middle cylindrical block; 5. Elastic spring; 6. Limit rod; 7. Filter plate; 8. Tension spring; 9. Support frame. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figures 1 to 4 As shown, the utility model provides a water pump head anti-blocking and dredging device, comprising a protective shell 1, the two sides of the inner cavity of the protective shell 1 are respectively fixedly connected with an input water pipe connecting pipe 2 and a water pump head connecting pipe 3, the inner cavity in the middle of the protective shell 1 is movably connected with an intermediate cylindrical block 4, the outer surface of the intermediate cylindrical block 4 is sleeved with an elastic spring 5, the top and bottom of the inner cavity of the elastic spring 5 are fixedly connected to a limit rod 6, the outer surface of the limit rod 6 is sleeved with a filter screen plate 7 and a tension spring 8, and the bottom of the protective shell 1 is fixedly connected to a support base 9; press the intermediate cylindrical block 4 downward, at this time The descent of the middle cylindrical block 4 will drive the limit rod 6 and the filter screen plate 7 to move downward and out of the interior of the protective shell 1. At this time, the middle part of the outer surface of the middle cylindrical block 4 will block the inner cavity of the protective shell 1 where the input water pipe connecting pipe 2 and the water pump head connecting pipe 3 are connected. Then the operator pushes the filter screen plate 7 to the side away from the tension spring 8 close to the side of the tension spring 8. At this time, the impurities in the inner cavity of the middle cylindrical block 4 close to the side of the input water pipe connecting pipe 2 will be pushed out. Through the above operation, the operator can clean the filter screen more quickly and conveniently.

[0024] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the input water pipe connecting pipe 2 is connected to the input water pipe at one end away from the water pump head connecting pipe 3, and the input water pipe connecting pipe 2 and the water pump head connecting pipe 3 are connected through the inner cavity at the bottom of the intermediate cylindrical block 4. The end of the water pump head connecting pipe 3 away from the input water pipe connecting pipe 2 is connected to the water pump head. The maximum diameter of the top of the intermediate cylindrical block 4 is larger than the diameter of the inner cavity at the top of the protective shell 1, and the diameter of the bottom of the intermediate cylindrical block 4 is larger than the diameter of the inner cavity at the bottom of the protective shell 1. The top and bottom of the elastic spring 5 are fixedly connected to the intermediate cylindrical block 4 and the protective shell 1 respectively; through the cooperation between the top of the intermediate cylindrical block 4 and the top of the inner cavity of the protective shell 1, when the intermediate cylindrical block 4 is reset by the elastic force of the elastic spring 5, the intermediate cylindrical block 4 is prevented from being pushed out to the inner cavity of the protective shell 1.

[0025] like Figure 2 、 Figure 3 、 Figure 4As shown, the top and bottom of the inner cavity of the filter screen plate 7 are movably connected to the outer surfaces of the two limit rods 6 at the upper and lower ends respectively, and the two ends of the tension spring 8 are fixedly connected to the middle cylindrical block 4 and the tension spring 8 respectively; through the design of the tension spring 8, when the operator pushes the filter screen plate 7 to the side close to the input water pipe connecting pipe 2, the tension of the tension spring 8 plays a role in resetting the filter screen plate 7.

[0026] The working principle and use process of this utility model:

[0027] First, the operator stops the water pump head and then presses the middle cylindrical block 4 downward. At this time, the descent of the middle cylindrical block 4 will drive the limit rod 6 and the filter screen 7 to move downward and out of the protective shell 1. At this time, the middle part of the outer surface of the middle cylindrical block 4 will block the inner cavity of the protective shell 1 where the input water pipe connecting pipe 2 and the water pump head connecting pipe 3 are connected. Then the operator pushes the filter screen 7 to the side away from the tension spring 8 close to the tension spring 8. At this time, the impurities in the inner cavity of the middle cylindrical block 4 close to the input water pipe connecting pipe 2 will be pushed out. Then the operator releases the device. Due to the tension of the tension spring 8 and the elastic force of the elastic spring 5, the filter screen 7 and the middle cylindrical block 4 will be reset respectively, which is convenient for the operator to use.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water pump head anti-blocking and drainage device, comprising a protective housing (1), characterized in that: The two sides of the inner cavity of the protective shell (1) are respectively fixedly connected with an input water pipe connecting pipe (2) and a water pump head connecting pipe (3); the inner cavity in the middle of the protective shell (1) is movably connected with an intermediate cylindrical block (4); the outer surface of the intermediate cylindrical block (4) is sleeved with an elastic spring (5); the top and bottom of the inner cavity of the elastic spring (5) are fixedly connected with a limit rod (6); the outer surface of the limit rod (6) is sleeved with a filter screen plate (7) and a tension spring (8); the bottom of the protective shell (1) is fixedly connected with a support base frame (9).

2. The water pump head anti-blocking and drainage device according to claim 1, characterized in that: One end of the input water pipe connecting pipe (2) away from the water pump head connecting pipe (3) is connected to the input water pipe, and one end of the water pump head connecting pipe (3) away from the input water pipe connecting pipe (2) is connected to the water pump head.

3. The water pump head anti-blocking and drainage device according to claim 1, characterized in that: The maximum diameter of the top of the intermediate cylindrical block (4) is greater than the diameter of the inner cavity at the top of the protective shell (1), and the diameter of the bottom of the intermediate cylindrical block (4) is greater than the diameter of the inner cavity at the bottom of the protective shell (1).

4. The water pump head anti-blocking and drainage device according to claim 1, characterized in that: The top and bottom of the elastic spring (5) are fixedly connected to the middle cylindrical block (4) and the protective shell (1) respectively.

5. The water pump head anti-blocking and drainage device according to claim 1, characterized in that: The water input pipe connecting pipe (2) and the water pump head connecting pipe (3) are connected through the inner cavity at the bottom of the middle cylindrical block (4).

6. The water pump head anti-blocking and drainage device according to claim 1, characterized in that: The top and bottom of the inner cavity of the filter screen plate (7) are movably connected to the outer surfaces of the two limiting rods (6) at the upper and lower ends respectively.

7. The water pump head anti-blocking and drainage device according to claim 1, characterized in that: The two ends of the tension spring (8) are fixedly connected to the middle cylindrical block (4) and the tension spring (8) respectively.

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