One-way valve for water pump

Abstract

The present invention provides a one-way valve for a water pump, comprising a valve body and a valve cover, the valve cover is mounted on the valve body, a through hole is provided in the valve body, a mounting groove and a first mounting portion are provided in the circumferential direction of the outer wall of the valve body, a spacing is provided between the mounting groove and the upper end face of the valve body, a groove and a stopper are provided on the upper end face of the valve body, the groove is connected to the mounting groove, a fixing block is provided on the outer side of the groove, and the upper end face of the stopper and the upper end face of the fixing block are in the same plane; the valve cover is made of rubber, a plug is provided on the valve cover, the plug covers the through hole, a second mounting portion is connected to the valve cover, a third mounting portion is connected to the lower end of the second mounting portion, the third mounting portion is arranged in the mounting groove, and the second mounting portion is arranged in the groove. The one-way valve for a water pump of the present invention has a simple structure, is convenient and quick to use, has a low manufacturing cost, and has a good sealing effect.

Description

Technical Field

[0001] The invention relates to a water pump, in particular to a one-way valve for a water pump. Background Art

[0002] A water pump is a machine that transports liquids or pressurizes liquids. It transfers the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali liquids, emulsions, suspensions and liquid metals. When a water pump transports liquids, a one-way valve is used at its outlet. The one-way valve is used as a switch. There are many types of one-way valves at this stage, but they usually have the following defects: First, the structure of the one-way valve is relatively complex and the processing is more troublesome, which will increase the manufacturing cost invisibly, and it is not convenient to use. The poor sealing effect can easily lead to liquid leakage. Summary of the invention

[0003] [1] Technical issues to be solved

[0004] The technical problem to be solved by the present invention is to provide a one-way valve for a water pump which has a simple structure, is convenient and quick to use, has a low manufacturing cost and has a good sealing effect.

[0005] 【2】Technical solutions to solve the problem

[0006] The present invention provides a one-way valve for a water pump, comprising a valve body and a valve cover, wherein the valve cover is mounted on the valve body, the valve body is cylindrical, a through hole is arranged in the valve body, a mounting groove and a first mounting portion are arranged circumferentially on the outer wall of the valve body, a spacing is arranged between the mounting groove and the upper end surface of the valve body, a groove and a stopper are arranged on the upper end surface of the valve body, the groove is connected to the mounting groove, a fixing block is arranged on the outer side of the groove, and the upper end surface of the stopper and the upper end surface of the fixing block are in the same plane; the valve cover is made of rubber material, a plug is arranged on the valve cover, the plug covers the through hole, a second mounting portion is connected to the valve cover, a third mounting portion is connected to the lower end of the second mounting portion, the third mounting portion is arranged in the mounting groove, and the second mounting portion is arranged in the groove.

[0007] Furthermore, the through hole is a stepped hole, and the diameter of the upper end of the stepped hole is smaller than the diameter of the lower end.

[0008] Furthermore, the cross section of the groove is convex, and a gap is provided between the groove and the second mounting portion.

[0009] Furthermore, there are two fixing blocks, and the two fixing blocks cooperate with the groove to fix the second mounting portion.

[0010] Furthermore, the plug is interference fit with the through hole.

[0011] Furthermore, the spacing is greater than or equal to 1 cm and less than or equal to 3 cm.

[0012] Furthermore, the outer diameter of the first mounting portion is smaller than the outer diameter of the valve body.

[0013] Furthermore, the valve body is made of PP-GF20.

[0014] Furthermore, the valve cover is made of silicone rubber.

[0015] Furthermore, the mounting groove is an annular groove, and the thickness of the annular groove is greater than or equal to 0.5 cm and less than or equal to 0.8 cm.

[0016] 【3】Beneficial effects

[0017] The one-way valve for a water pump of the present invention has a simple structure, is convenient and quick to use, has a low manufacturing cost and a good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 An exploded view of a one-way valve for a water pump according to the present invention;

[0019] Figure 2 A three-dimensional diagram of a valve body in a one-way valve for a water pump according to the present invention;

[0020] Figure 3 A top view of a valve body in a one-way valve for a water pump according to the present invention;

[0021] Figure 4 for Figure 3 A sectional view of part A;

[0022] Figure 5 for Figure 3 Left view of

[0023] Figure 6 It is a front view of the valve cover in the one-way valve for a water pump of the present invention. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] See also Figures 1 to 6The present invention provides a one-way valve for a water pump, comprising a valve body 1 and a valve cover 2, wherein the valve cover 2 is mounted on the valve body 1, the valve body 1 is cylindrical, a through hole 11 is arranged in the valve body 1, a mounting groove 12 and a first mounting portion 16 are arranged in the circumferential direction of the outer wall of the valve body 1, the first mounting portion 16 is used to be clamped at the water outlet of the water pump, a spacing is arranged between the mounting groove 12 and the upper end surface of the valve body 1, a groove 14 and a stopper 13 are arranged on the upper end surface of the valve body 1, the groove 14 communicates with the mounting groove 12, a fixing block 15 is provided on the outer side of the groove 14, and the upper end surface of the stopper 13 is in the same plane as the upper end surface of the fixing block 15; the valve cover 2 is made of rubber, and the valve cover 2 is provided with a plug 21, and the plug 21 covers the through hole 11, and the valve cover 2 is connected with a second mounting portion 23, and the lower end of the second mounting portion 23 is connected with a third mounting portion 22, and the third mounting portion 22 is arranged in the mounting groove 12, and the second mounting portion 23 is arranged in the groove 14.

[0026] In order to ensure the water output stability and efficiency of the water pump, Figure 4 As shown in the present embodiment, the through hole 11 is a stepped hole, the aperture of the upper end of the stepped hole is smaller than the aperture of the lower end, the inner diameter of the large-diameter section of the stepped hole is 5-10 mm larger than the inner diameter of the small-diameter section, with 8 mm being the best, and the length of the large-diameter section of the stepped hole is approximately equal to twice the length of the small-diameter section. The advantage of designing such a structure is that when water passes through the through hole 11, a certain water pressure will be formed when the large-diameter section in the stepped hole passes through the small-diameter section, forcing the water to flow out quickly.

[0027] In order to ensure that the second mounting portion 23 and the third mounting portion 22 on the valve cover 2 can be quickly installed on the valve body 1, in the present embodiment, the cross section of the groove 14 is convex, and a gap is provided between the groove 14 and the second mounting portion 23. Specifically, the cross section of the second mounting portion 23 is rectangular, and the convex groove is an inverted opening shape, which is arranged in an opening shape to facilitate the second mounting portion 23 to enter the convex groove. Since the valve cover 2 is made of rubber, it can undergo a certain degree of plastic deformation. There are two fixing blocks 15, and the two fixing blocks 15 cooperate with the groove 14 to fix the second mounting portion 23. This structural design can ensure that the valve cover 2 will not rotate after installation.

[0028] In order to improve the sealing effect, in this embodiment, the plug 21 is interference fit with the through hole 11. When in use, you only need to forcefully open the valve cover 2, and then cover the valve cover 2 after use. In order to further improve the sealing effect, in this example, a spacing is provided between the mounting groove 12 and the upper end surface of the valve body 1. The mounting groove 12 is an annular groove, and the thickness of the annular groove is greater than or equal to 0.5 cm and less than or equal to 0.8 cm. In this example, the thickness of the annular groove is preferably 0.65 cm, and the spacing is greater than or equal to 1 cm and less than or equal to 3 cm. The spacing is optimally 2 cm. This structural design can effectively prevent the valve cover 2 and the valve body 1 from falling off in a natural state, and a certain external force is required to open the valve cover 2.

[0029] It should also be pointed out that in order to increase the service life, in this embodiment, the material of the valve body 1 is PP-GF20 (polypropylene + 20% glass fiber reinforcement), and the material of the valve cover 2 is silicone rubber, which is an environmentally friendly material.

[0030] The one-way valve for a water pump of the present invention has a simple structure, is convenient and quick to use, has a low manufacturing cost and a good sealing effect.

[0031] 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 principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A one-way valve for a water pump, comprising a valve body (1) and a valve cover (2), wherein the valve cover (2) is mounted on the valve body (1), and characterized in that: The valve body (1) is cylindrical, a through hole (11) is provided in the valve body (1), a mounting groove (12) and a first mounting portion (16) are provided in the circumferential direction of the outer wall of the valve body (1), a spacing is provided between the mounting groove (12) and the upper end surface of the valve body (1), a groove (14) and a stopper (13) are provided on the upper end surface of the valve body (1), the groove (14) is connected to the mounting groove (12), a fixing block (15) is provided on the outer side of the groove (14), and the stopper (13) is provided with a fixing block (15). The upper end surface is in the same plane as the upper end surface of the fixing block (15); the valve cover (2) is made of rubber material, the valve cover (2) is provided with a plug (21), the plug (21) covers the through hole (11), the valve cover (2) is connected with a second mounting portion (23), the lower end of the second mounting portion (23) is connected with a third mounting portion (22), the third mounting portion (22) is arranged in the mounting groove (12), and the second mounting portion (23) is arranged in the groove (14); The through hole (11) is a stepped hole, the diameter of the upper end of the stepped hole is smaller than the diameter of the lower end, the cross section of the groove (14) is convex, a gap is provided between the groove (14) and the second mounting portion (23), and there are two fixing blocks (15), and the two fixing blocks (15) cooperate with the groove (14) to fix the second mounting portion (23).

2. The one-way valve for a water pump according to claim 1, characterized in that: The plug (21) is interference fit with the through hole (11).

3. The one-way valve for a water pump according to claim 1, characterized in that: The spacing is greater than or equal to 1 cm and less than or equal to 3 cm.

4. The one-way valve for a water pump according to claim 1, characterized in that: The outer diameter of the first mounting portion (16) is smaller than the outer diameter of the valve body (1).

5. The one-way valve for a water pump according to claim 1, characterized in that: The material of the valve body (1) is PP-GF20.

6. The one-way valve for a water pump according to claim 1, characterized in that: The material of the valve cover (2) is silicone rubber.

7. The one-way valve for a water pump according to claim 1, characterized in that: The mounting groove (12) is an annular groove, and the thickness of the annular groove is greater than or equal to 0.5 cm and less than or equal to 0.8 cm.

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