Water pump head sealing device

Abstract

The utility model discloses a sealing device for a pump head of a water pump, which belongs to the technical field of water pumps and comprises a clamping ring, an expansion leather ring and a pair of sealing rings, the sealing rings are distributed at the upper end and the lower end of the clamping ring, the sealing rings are fixedly connected with the clamping ring, and the expansion leather ring is fixedly clamped in the clamping ring. The clamping ring comprises a clamping ring body, and a V-shaped clamping ring groove is formed in the inner side end of the clamping ring body. And avoiding grooves are uniformly formed in the periphery of the clamping ring main body. The clamping ring, the expansion leather ring and the sealing ring are cushioned between the pump head and the pump body, then the screw is tightened, the sealing ring is clamped by the pump head and the pump body, conventional sealing is carried out through the sealing ring, meanwhile, the expansion leather ring is clamped between the pump head and the pump body, and when the sealing ring unfortunately leaks, water pressure acts on the expansion leather ring to enable the expansion leather ring to expand outwards, so that the pump head and the pump body are sealed. The expansion leather ring is further sealed by means of water pressure, and the leak-proof capacity of the pump is improved.

Description

Technical Field

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

[0002] A water pump is a machine that transports liquids or increases the pressure of 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.

[0003] Since the pump head and pump body of the water pump are sealed with conventional sealing rings, it only relies on the pressure of the screws on the pump head and the pump body to make the pressure act on the sealing ring for sealing. When the pressure is unbalanced or the sealing body is slightly aged, the lack of a rescue structure causes the conventional sealing ring of the water pump head to have a relatively low anti-leakage ability.

[0004] Therefore, we propose a water pump head sealing device to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem that the conventional sealing ring of a pump head of a water pump has a relatively low anti-leakage ability, and proposes a sealing device for a pump head of a water pump.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A water pump head sealing device comprises a clamping ring, an expansion leather ring and a sealing ring, wherein a pair of sealing rings are provided, the sealing rings are distributed at the upper end and the lower end of the clamping ring, the sealing ring is fixedly connected to the clamping ring, and the expansion leather ring is fixedly clamped inside the clamping ring. The clamping ring, the expansion leather ring and the sealing ring are padded between the pump head and the pump body, and then the screws are tightened so that the pump head and the pump body clamp the sealing ring, and conventional sealing is performed through the sealing ring, while the expansion leather ring is clamped between the pump head and the pump body. When the sealing ring unfortunately leaks, the water pressure is used to act on the expansion leather ring to expand the expansion leather ring outward, and the expansion leather ring is further sealed with the help of the water pressure, thereby improving the anti-leakage ability of the pump.

[0008] Preferably, the snap ring includes a snap ring body, and a V-shaped snap ring groove is provided at the inner end of the snap ring body. The expansion leather ring is deformed by pinching, and then inserted into the V-shaped snap ring groove, and the V-shaped snap ring groove is used to bind the outside of the expansion leather ring, so that the expansion leather ring is installed inside the snap ring body, which facilitates the assembly of the snap ring and the expansion leather ring.

[0009] Preferably, avoidance grooves are evenly formed on the outer circumference of the clamping ring body, so as to facilitate avoiding the bolts.

[0010] Preferably, the upper part of the clamping ring body and the lower part of the clamping ring body are both provided with fixing ring grooves, which facilitate fixing of the sealing ring.

[0011] Preferably, the expansion ring includes a first conical ring and a second conical ring, the lower end of the first conical ring is fixedly connected to the upper end of the second conical ring, and the first conical ring and the second conical ring are an integral structure. The first conical ring and the second conical ring are plugged into the V-shaped clamping ring groove. After installation, the pump head and the pump body are used to clamp the first conical ring and the second conical ring, so that the first conical ring and the second conical ring act between the pump body and the pump head, and the water pressure acts on the inner side of the first conical ring and the second conical ring, so that the first conical ring and the second conical ring are further pressed between the pump body and the pump head, so as to facilitate the use of water pressure to improve the seal.

[0012] Preferably, the expansion leather ring further comprises a reinforcement block, and the reinforcement block is evenly fixedly connected between the first conical leather ring and the second conical leather ring. The reinforcement block is fixedly connected between the first conical leather ring and the second conical leather ring to increase the stability of the angle between the first conical leather ring and the second conical leather ring.

[0013] In summary, the technical effects and advantages of the utility model are as follows:

[0014] 1. Place the clamping ring, expansion ring and sealing ring between the pump head and the pump body, and then tighten the screws to clamp the sealing ring between the pump head and the pump body. Conventional sealing is performed through the sealing ring, and at the same time, the expansion ring is clamped between the pump head and the pump body. When the sealing ring unfortunately leaks, the water pressure is used to act on the expansion ring to make it expand outward. The expansion ring is further sealed with the help of water pressure, thereby improving the pump's anti-leakage ability.

[0015] 2. Pinch the expansion leather ring to deform it, and then insert it into the V-shaped snap ring groove. Use the V-shaped snap ring groove to restrain the outside of the expansion leather ring so that the expansion leather ring is installed inside the snap ring body, which is convenient for assembling the snap ring and the expansion leather ring.

[0016] 3. Insert the first conical leather ring and the second conical leather ring into the V-shaped clamping ring groove. After installation, use the pump head and the pump body to clamp the first conical leather ring and the second conical leather ring so that the first conical leather ring and the second conical leather ring act between the pump body and the pump head. Use water pressure to act on the inner side of the first conical leather ring and the second conical leather ring so that the first conical leather ring and the second conical leather ring are further pressed between the pump body and the pump head, so as to improve the seal with the help of water pressure. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a schematic diagram of the structure of the clamping ring of the utility model;

[0019] Figure 3 It is a schematic diagram of the expansion leather ring structure of the utility model.

[0020] In the figure: 1, sealing ring; 2, snap ring; 3, expansion leather ring; 21, snap ring body; 22, V-shaped snap ring groove; 23, avoidance groove; 24, fixed ring groove; 31, first conical leather ring; 32, second conical leather ring; 33, reinforcement block. DETAILED DESCRIPTION

[0021] The technical solutions in the utility model embodiments will be described clearly and completely below in conjunction with the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, rather than all of the embodiments.

[0022] Reference Figure 1 A water pump head sealing device includes a clamping ring 2, an expansion leather ring 3 and a sealing ring 1. A pair of sealing rings 1 are provided. The sealing rings 1 are distributed at the upper end and the lower end of the clamping ring 2. The sealing ring 1 is fixedly connected to the clamping ring 2, and the expansion leather ring 3 is fixedly clamped inside the clamping ring 2.

[0023] Reference Figure 1 and 2 The snap ring 2 includes a snap ring body 21, and a V-shaped snap ring groove 22 is provided at the inner end of the snap ring body 21. The expansion leather ring 3 is deformed by pinching, and then inserted into the V-shaped snap ring groove 22, and the V-shaped snap ring groove 22 is used to bind the outside of the expansion leather ring 3, so that the expansion leather ring 3 is installed inside the snap ring body 21.

[0024] Reference Figure 2 The outer circumference of the clamping ring body 21 is evenly provided with escape grooves 23. The escape grooves 23 are used to escape the bolts.

[0025] Reference Figure 1 and 2 The upper part of the snap ring body 21 and the lower part of the snap ring body 21 are both provided with a fixing ring groove 24. The fixing ring groove 24 is used to fix the sealing ring 1.

[0026] Reference Figure 1 , 23, the expansion ring 3 includes a first conical ring 31 and a second conical ring 32, the first conical ring 31 and the second conical ring 32 are clamped in the V-shaped clamping ring groove 22, the lower end of the first conical ring 31 is fixedly connected to the upper end of the second conical ring 32, and the first conical ring 31 and the second conical ring 32 are an integral structure. The first conical ring 31 and the second conical ring 32 are plugged in the V-shaped clamping ring groove 22, and after installation, the first conical ring 31 and the second conical ring 32 are clamped by the pump head and the pump body, so that the first conical ring 31 and the second conical ring 32 act between the pump body and the pump head, and the water pressure acts on the inner side of the first conical ring 31 and the second conical ring 32, so that the first conical ring 31 and the second conical ring 32 are further pressed between the pump body and the pump head.

[0027] Reference Figure 1 and 3 The expansion leather ring 3 also includes a reinforcement block 33, which is evenly fixedly connected between the first conical leather ring 31 and the second conical leather ring 32. The reinforcement block 33 is fixedly connected between the first conical leather ring 31 and the second conical leather ring 32 to increase the stability of the angle between the first conical leather ring 31 and the second conical leather ring 32.

[0028] Working principle: Place the clamping ring 2, expansion ring 3 and sealing ring 1 between the pump head and the pump body, then tighten the screws to clamp the sealing ring 1 between the pump head and the pump body, and perform conventional sealing through the sealing ring 1. At the same time, the expansion ring 3 is clamped between the pump head and the pump body. When the sealing ring 1 unfortunately leaks, the water pressure is used to act on the expansion ring 3 to make it expand outward, and the expansion ring 3 is further sealed with the help of the water pressure.

[0029] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited to it. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the utility model according to the technical scheme and utility model concept of the utility model, which should be covered by the protection scope of the utility model.

[0030] The description briefly mentions the application direction of the utility model for the prior art that is known to those skilled in the art and has not been changed, and combines it with the utility model to form a complete technology; the description avoids over-popularizing the technology familiar to those skilled in the art, and is used to assist those skilled in the art to quickly understand the main content of the utility model.

Claims

1. A water pump head sealing device, characterized in that: It comprises a clamping ring (2), an expansion leather ring (3) and a sealing ring (1), wherein a pair of the sealing rings (1) are provided, the sealing rings (1) are distributed at the upper end and the lower end of the clamping ring (2), the sealing ring (1) is fixedly connected to the clamping ring (2), and the expansion leather ring (3) is fixedly clamped inside the clamping ring (2).

2. A water pump head sealing device according to claim 1, characterized in that: The snap ring (2) comprises a snap ring body (21), and a V-shaped snap ring groove (22) is provided at the inner end of the snap ring body (21).

3. A water pump head sealing device according to claim 2, characterized in that: Avoidance grooves (23) are evenly arranged on the outer circumference of the clamping ring body (21).

4. A water pump head sealing device according to claim 2, characterized in that: The upper part of the snap ring body (21) and the lower part of the snap ring body (21) are both provided with a fixing ring groove (24).

5. A water pump head sealing device according to claim 1, characterized in that: The expansion leather ring (3) comprises a first conical leather ring (31) and a second conical leather ring (32), the lower end of the first conical leather ring (31) is fixedly connected to the upper end of the second conical leather ring (32), and the first conical leather ring (31) and the second conical leather ring (32) are an integral structure.

6. A water pump head sealing device according to claim 5, characterized in that: The expansion leather ring (3) further comprises a reinforcement block (33), wherein the reinforcement block (33) is evenly and fixedly connected between the first conical leather ring (31) and the second conical leather ring (32).

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