Improved check valve structure for water pump

Abstract

The utility model discloses an improved check valve structure for a water pump, which relates to the technical field of water pumps, and comprises a five-way valve, a sealing ring, a check valve seat made of metal material, a check valve core and a connecting screw, and the check valve seat is connected with the check valve core through the connecting screw; the five-way valve internally comprises a water channel opening ring body, the water channel opening ring body comprises a first water channel opening ring body and a second water channel opening ring body, a plurality of guide channels are arranged on the inner side of the first water channel opening ring body, and the inner side of the second water channel opening ring body is a reverse slope; the check valve seat comprises a valve seat body, a front inclined face is arranged on the outer circle of a first ring body of the valve seat body, a U-shaped ring groove is formed in the front inclined face, and a sealing ring is installed in the U-shaped ring groove. When the check valve seat falls on the water channel opening ring body, the top surface of the first water channel opening ring body is contacted with the bottom surface of the first ring body, and the front inclined surface and the sealing ring are respectively contacted with the reverse inclined surface; the check valve element comprises a valve element body, the valve element body is provided with a plurality of L-shaped guide rails, and the L-shaped guide rails move along the guide way. The device is simple in structure and easy and convenient to assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to an improved check valve structure for a water pump. Background Art

[0002] Similar check valve structures for water pumps in the prior art have been disclosed by the following patent documents.

[0003] Chinese invention patent specification CN 111441954 A (published on July 24, 2020) discloses a multi-stage centrifugal pump, including a motor body with an output shaft and a pump body that is buckled in front of the motor body and has a pump cavity, and the output shaft in the motor body extends into the pump cavity, and a plurality of impeller assemblies are fixed on the output shaft, and the impeller assembly is composed of a plurality of impellers and a plurality of mouth rings, and a return cover with a return channel is provided in the pump body, and the return cover is movably provided with a return valve assembly at the return channel, and the mouth ring is a floating mouth ring, and the mouth ring is composed of an outer ring with a hollow setting and an inner ring that is engaged with the outer ring and is hollow, and the return valve assembly is composed of a valve body and a return spring, and the tail of the valve body is forked to form a plurality of clip strips with elastic gaps in the middle and hook parts. The invention has the advantages of low wear and high assembly precision.

[0004] However, the check valve structure of the multi-stage centrifugal pump disclosed above has the disadvantages of being complex in structure and difficult to install. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an improved check valve structure for a water pump, so as to overcome the defects of the check valve structure for a water pump in the prior art, that is, the structure is complex and the installation is difficult.

[0006] In order to solve the above technical problems, the utility model provides an improved check valve structure for a water pump, comprising a five-way valve, a sealing ring, a check valve seat made of metal material, a check valve core and connecting screws, wherein the check valve seat is connected to the check valve core by connecting screws; the five-way valve comprises a waterway outlet ring body, the waterway outlet ring body comprises a first waterway outlet ring body and a second waterway outlet ring body, the inner side of the first waterway outlet ring body is provided with a plurality of guide channels, and the inner side of the second waterway outlet ring body is a reverse slope; the check valve seat comprises a valve seat body, the outer circle of the first ring body of the valve seat body is provided with a positive slope, the positive slope is provided with a U-shaped annular groove, and the U-shaped annular groove is installed with a sealing ring; when the check valve is seated on the waterway outlet ring body, the top surface of the first waterway outlet ring body contacts the bottom surface of the first ring body, and the positive slope and the sealing ring contact the reverse slope respectively; the check valve core comprises a valve core body, the valve core body is provided with a plurality of L-shaped guide rails, and the L-shaped guide rails move along the guide channels.

[0007] Wherein, four guide channels are arranged in the inner side ring of the first water channel opening ring body.

[0008] Wherein, the valve core body is provided with four L-shaped guide rails.

[0009] The valve seat body further comprises a second ring body and a third ring body, and the third ring body comprises a tapered hole and a first screw hole, and the tapered hole and the first screw hole are just matched with the screw.

[0010] Wherein, the reverse side of the second ring body has a ring body groove.

[0011] Wherein, the valve core body includes a fourth ring body and a fifth ring body, and the fifth ring body matches the ring body groove.

[0012] Wherein, the fifth ring body has a second screw hole for matching with the screw.

[0013] Wherein, a reinforcing rib is provided between the L-shaped guide rail and the fourth ring body.

[0014] Wherein, the thickness of the first waterway outlet ring body is greater than the thickness of the first ring body.

[0015] Wherein, the metal material is copper.

[0016] Compared with the prior art, the beneficial effect of the utility model is that because the spring structure is eliminated, the structure is simpler, and the ability of foreign matter to pass through the waterway outlet ring body is also stronger; and during assembly, the check valve core is placed into the waterway outlet ring body from the bottom, and the check valve seat is placed into the waterway outlet ring body from the top, and they can be spirally connected by screws, so the assembly is relatively simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the water pump;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the water pump;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the check valve structure;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the check valve structure;

[0021] Figure 5 is a first cross-sectional structural schematic diagram of a five-way valve;

[0022] Figure 6 is a second cross-sectional structural schematic diagram of a five-way valve;

[0023] Figure 7 is a third cross-sectional structural schematic diagram of a five-way valve;

[0024] Figure 8 is a first structural schematic diagram of a check valve seat;

[0025] Fig. 9 is a second structural schematic diagram of a check valve seat;

[0026] Fig.10 It is a third structural schematic diagram of the check valve seat;

[0027] Fig.11 is a first structural schematic diagram of a check valve core;

[0028] Fig.12 2 is a second structural schematic diagram of the check valve core. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] The check valve structure 1 of this embodiment is as follows Figures 1 to 12 As shown, it includes a five-way valve 2, and the five-way valve includes a first connecting port 3, a second connecting port 4, a third connecting port 5, a fourth connecting port 6, and a fifth connecting port 7; the functions of the five connecting ports of the above-mentioned five-way valve are the same as those in the existing conventional technology (that is, the first connecting port is used for water outlet, the second connecting port is used for setting a pressure sensor, the third connecting port is used for connecting a pressure tank, the fourth connecting port is used for setting a temperature sensor, and the fifth connecting port is used for water inlet), so it will not be described in detail.

[0031] The five-way valve of this embodiment includes a waterway opening ring body 8 for passing water, and the waterway opening ring body includes a first waterway opening ring body 9, a second waterway opening ring body 10 located on the first waterway opening ring body, and the diameter of the second waterway opening ring body is larger than that of the first waterway opening ring body, so that a first waterway opening ring body top surface 11 with a drop is formed between the first waterway opening ring body and the second waterway opening ring body. Four guide channels 12 are arranged around the inner side of the first waterway opening ring body, and the groove depth of each guide channel is spaced a certain distance from the second waterway opening ring body, so as to prevent water leakage when the waterway opening is sealed. The inner side of the second waterway opening ring body is a reverse slope 13.

[0032] The check valve structure of this embodiment also includes a sealing ring 14, a check valve seat 15, a check valve core 16 and a connecting screw 17 made of a metal material, and the metal material is copper. The purpose of providing the copper material is to improve its service life and wear resistance, and to achieve the purpose of quickly falling back to the waterway opening ring body by gravity to seal the waterway opening 18 when there is no water entering the fifth connecting port. Specifically, the check valve seat is connected to the check valve core by a connecting screw, that is, during assembly, the check valve core is placed into the waterway opening ring body from the bottom, and the check valve seat is placed into the waterway opening ring body from the top, and then the check valve seat and the check valve core are spirally connected by screws, which makes assembly simpler and more efficient.

[0033] The check valve seat of this embodiment includes a valve seat body, and the first ring body 23 of the valve seat body has a positive bevel 20 on its outer circle, and a U-shaped ring groove 21 is provided on the positive bevel, and a sealing ring is installed in the U-shaped ring groove; when the check valve seat falls on the waterway outlet ring body, the top surface of the first waterway outlet ring body contacts the bottom surface 25 of the first ring body, and the positive bevel and the sealing ring contact the reverse bevel respectively, so as to seal the waterway outlet and prevent water from flowing back. The thickness of the first waterway outlet ring body is greater than the thickness of the first ring body, so as to ensure that the check valve seat falls stably on the waterway outlet ring body. The valve seat body also has a second ring body 26 and a third ring body 27, and the third ring body has a conical hole 28 and a first screw hole 29, and the conical hole and the first screw hole are just tightly matched with the screw. The reverse side of the second ring body has a ring body groove 30.

[0034] The check valve core of this embodiment includes a valve core body, and the valve core body is ringed with four L-shaped guide rails 24. When water enters the fifth connecting port, the check valve seat and the check valve core will move upward under the impact of the water flow. The movement of the L-shaped guide rails along the guide path helps to further ensure the stability and reliability of the up and down movement of the check valve seat and the check valve core, and the upward movement distance of the check valve core will be limited, that is, when it moves to a certain distance, the bottom surface 22 of the first water channel opening ring body will produce a blocking force on the L-shaped guide rail. The valve core body includes a fourth ring body 31 and a fifth ring body 32, and the fifth ring body is exactly matched with the ring body groove. The fifth ring body has a second screw hole 33 for matching with a screw, so as to ensure that the screw connects the check valve seat and the check valve core. There is a reinforcing rib 34 between the L-shaped guide rail and the fourth ring body to extend its service life.

[0035] When this embodiment is in use, when water enters the fifth connecting port, affected by the impact of the water flow, the check valve seat and the check valve core will move upward until the lower part of the L-shaped guide rail hooks on the bottom surface of the first waterway outlet ring body and stops moving upward; when water stops entering the fifth connecting port, the check valve seat and the check valve core will fall back steadily into the waterway outlet ring body due to the influence of gravity and the guiding effect of the L-shaped guide rail. At this time, the top surface of the first waterway outlet ring body contacts the bottom surface of the first ring body, and the positive inclined surface and the sealing ring contact the reverse inclined surface respectively, thereby sealing the waterway outlet to prevent water backflow.

[0036] Because the spring structure is eliminated in this embodiment, the structure is simpler and the ability of foreign matter to pass through the waterway outlet is also stronger; and during assembly, the check valve core is placed into the waterway outlet ring body from the bottom, and the check valve seat is placed into the waterway outlet ring body from the top, and they can be spirally connected by screws, so the assembly is relatively simpler.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An improved check valve structure for a water pump, characterized in that: It includes a five-way valve, a sealing ring, a check valve seat made of metal material, a check valve core and connecting screws, wherein the check valve seat is connected to the check valve core through the connecting screws; The five-way valve includes a waterway opening ring body, which includes a first waterway opening ring body and a second waterway opening ring body. The first waterway opening ring body is provided with a plurality of guide channels on the inner side, and the second waterway opening ring body is provided with a reverse slope on the inner side. The check valve seat comprises a valve seat body, the outer circle of the first ring body of the valve seat body is provided with a positive bevel, the positive bevel is provided with a U-shaped ring groove, and a sealing ring is installed in the U-shaped ring groove; when the check valve is seated on the waterway outlet ring body, the top surface of the first waterway outlet ring body contacts the bottom surface of the first ring body, and the positive bevel and the sealing ring contact the negative bevel respectively; The check valve core comprises a valve core body, and the valve core body is provided with a plurality of L-shaped guide rails, and the L-shaped guide rails move along the guide path.

2. The improved check valve structure for a water pump according to claim 1 is characterized in that: Four guide channels are arranged in the inner side of the first water channel opening ring body.

3. The improved check valve structure for a water pump according to claim 2 is characterized in that: The valve core body is provided with four L-shaped guide rails.

4. The improved check valve structure for a water pump according to claim 3 is characterized in that: The valve seat body also has a second ring body and a third ring body. The third ring body has a tapered hole and a first screw hole. The tapered hole and the first screw hole are just matched with the screw.

5. The improved check valve structure for a water pump according to claim 4 is characterized in that: The reverse side of the second ring body has a ring body groove.

6. The improved check valve structure for a water pump according to claim 5 is characterized in that: The valve core body comprises a fourth ring body and a fifth ring body, and the fifth ring body matches the ring body groove.

7. The improved check valve structure for a water pump according to claim 6 is characterized in that: The fifth ring body has a second screw hole for matching with a screw.

8. The improved check valve structure for a water pump according to claim 5, characterized in that: A reinforcing rib is provided between the L-shaped guide rail and the fourth ring body.

9. The improved check valve structure for a water pump according to claim 1 is characterized in that: The thickness of the first waterway outlet ring body is greater than the thickness of the first ring body.

10. The improved check valve structure for a water pump according to any one of claims 1 to 9, characterized in that: The metal material is copper.

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