Bimetal side plate sealing structure for high-pressure gear pump

Abstract

The utility model discloses a bimetallic side plate sealing structure for a high-pressure gear pump in the technical field of gear pump accessories, which comprises a hard alloy layer and a low-carbon steel layer, the low-carbon steel layer is fixedly connected to the rear side wall of the hard alloy layer, and oil storage holes are formed in the left side and the right side of the front side wall of the hard alloy layer. An inner cavity of the oil storage hole is filled with oil absorption sponge, a first communicating groove is formed in the hard alloy layer, an oil outlet groove is formed in one side of the oil storage hole, a first oil groove is formed in the upper middle side of the front side wall of the hard alloy layer, and a second oil groove is formed in the lower middle side of the front side wall of the hard alloy layer. The bimetallic side plate sealing structure for the high-pressure gear pump is reasonable in structural design, the loss speed of lubricating oil can be slowed down, abrasion caused by lack of the lubricating oil is avoided, and the lubricating oil can be released for a long time.

Description

Technical Field

[0001] This utility model relates to the technical field of gear pump accessories, specifically a bimetallic side plate sealing structure for high-pressure gear pumps. Background Technology

[0002] The gear pump side plate is an important component of a hydraulic gear pump, located between the pump body and the end cover. Its main function is to support and fix the internal structure of the gear pump, while also sealing and preventing leakage. The side plate needs to have sufficient strength and rigidity to withstand the pressure and vibration of the hydraulic system and maintain the stability and reliability of the pump. Common materials for gear pump side plates include cast iron, stainless steel, and copper alloys.

[0003] Existing gear pump side plates cannot slow down the rate of lubricant loss during use, making it easy for lubricant to flow away from between the gear and the side plate. This leads to increased friction between the gear and the side plate, which in turn makes the gear or side plate prone to wear. To address this, we propose a bimetallic side plate sealing structure for high-pressure gear pumps. Utility Model Content

[0004] The purpose of this invention is to provide a bimetallic side plate sealing structure for high-pressure gear pumps, in order to solve the problem mentioned in the background art that the existing gear pump side plates cannot slow down the rate of lubricant loss during use, making it easy for lubricant to flow away from the gear and the side plate, resulting in increased friction between the gear and the side plate, and consequently causing wear on the gear or the side plate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bimetallic side plate sealing structure for a high-pressure gear pump, comprising a hard alloy layer and a low-carbon steel layer, wherein the low-carbon steel layer is fixedly connected to the rear side wall of the hard alloy layer, and oil storage holes are provided on the left and right sides of the front side wall of the hard alloy layer, wherein the inner cavity of the oil storage hole is filled with an oil-absorbing sponge, wherein a first connecting groove is provided inside the hard alloy layer, and an oil outlet groove is provided on one side of the oil storage hole.

[0006] As a further description of the above technical solution:

[0007] A first oil groove is formed on the upper side of the front sidewall of the cemented carbide layer.

[0008] As a further description of the above technical solution:

[0009] A second oil groove is provided on the lower side of the front sidewall of the cemented carbide layer.

[0010] As a further description of the above technical solution:

[0011] A back pressure groove is provided on the lower side of the rear wall of the low carbon steel layer, and the back pressure groove is W-shaped.

[0012] As a further description of the above technical solution:

[0013] An oil storage cavity is provided in the middle of the interior of the low-carbon steel layer.

[0014] As a further description of the above technical solution:

[0015] The low-carbon steel layer has a second connecting groove on its left and right sides, and the second connecting groove is connected to the oil storage hole and the oil storage cavity.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This bimetallic side plate sealing structure for high-pressure gear pumps uses an oil-absorbing sponge to absorb lubricating oil, which is then stored in the oil reservoir. The oil-absorbing sponge, once full of lubricating oil, gradually releases the oil, allowing it to slowly drain from the front of the oil reservoir and the oil outlet groove. This enables the lubricating oil to lubricate the gears and gear shafts for an extended period, thereby slowing down the rate of lubricating oil loss and preventing wear caused by insufficient lubricating oil.

[0018] 2. The bimetallic side plate sealing structure for the high-pressure gear pump utilizes the high-speed rotation of the internal gears during operation to agitate the lubricating oil. This agitates the lubricating oil into the back pressure groove, which then guides it into the oil storage chamber. As more and more lubricating oil enters the storage chamber, it gradually flows into the second connecting groove. Finally, guided by the second connecting groove, the lubricating oil returns to the oil storage hole, replenishing the oil-absorbing sponge and ensuring its continuous release of lubricating oil. This allows the side plate to release lubricating oil over a long period. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the bimetallic side plate sealing structure for a high-pressure gear pump proposed in this utility model.

[0020] Figure 2 This is a schematic diagram of the main sectional view of the bimetallic side plate sealing structure for a high-pressure gear pump proposed in this utility model.

[0021] Figure 3 This is a schematic diagram of the left cross-sectional view of the bimetallic side plate sealing structure for a high-pressure gear pump proposed in this utility model.

[0022] Figure 4 This is a rear cross-sectional view of the bimetallic side plate sealing structure for a high-pressure gear pump proposed in this utility model.

[0023] In the figure: 100, hard alloy layer; 110, oil storage hole; 120, oil-absorbing sponge; 130, first connecting groove; 140, oil outlet groove; 150, first oil groove; 160, second oil groove; 200, low carbon steel layer; 210, back pressure groove; 220, oil storage cavity; 230, second connecting groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] This invention provides a bimetallic side plate sealing structure for high-pressure gear pumps, which can slow down the rate of lubricant loss, prevent wear caused by insufficient lubrication, and allow for long-term lubrication release. (See also...) Figure 1-4 It includes a hard alloy layer 100 and a low carbon steel layer 200;

[0028] Please see Figure 1-3Oil storage holes 110 are provided on the left and right sides of the front sidewall of the cemented carbide layer 100. The inner cavity of the oil storage hole 110 is filled with an oil-absorbing sponge 120. The interior of the cemented carbide layer 100 is provided with a first connecting groove 130. An oil outlet groove 140 is provided on one side of the oil storage hole 110. A first oil groove 150 is provided on the upper side of the front sidewall of the cemented carbide layer 100, and a second oil groove 160 is provided on the lower side of the front sidewall of the cemented carbide layer 100. The oil-absorbing sponge 120 absorbs the lubricating oil and stores the lubricating oil in the oil storage hole 110. Then, the oil-absorbing sponge 120, which is full of lubricating oil, will gradually release the lubricating oil, so that the lubricating oil slowly flows out from the front side of the oil storage hole 110 and the oil outlet groove 140, thereby enabling the lubricating oil to lubricate the gear and gear shaft for a long time.

[0029] In summary, this allows the side plate to slow down the rate of lubricant loss, preventing wear caused by insufficient lubrication.

[0030] Please read Figure 1 , Figure 3 and Figure 4 The low-carbon steel layer 200 is fixedly connected to the rear side wall of the hard alloy layer 100. A back pressure groove 210 is provided on the lower side of the rear side wall of the low-carbon steel layer 200. The back pressure groove 210 is W-shaped. An oil storage cavity 220 is provided in the middle of the interior of the low-carbon steel layer 200. Second connecting grooves 230 are provided on the left and right sides of the interior of the low-carbon steel layer 200. The second connecting grooves 230 are connected to the oil storage hole 110 and the oil storage cavity 220. When the gear pump is working, the internal gears rotate at high speed, which agitates the lubricating oil. The lubricating oil is stirred into the back pressure groove 210 and guided by the back pressure groove 210 to enter the oil storage chamber 220. As more and more lubricating oil enters the oil storage chamber 220, it gradually enters the second connecting groove 230. Finally, guided by the second connecting groove 230, the lubricating oil returns to the oil storage hole 110, thereby replenishing the oil-absorbing sponge 120 with lubricating oil, so that the oil-absorbing sponge 120 can continuously release lubricating oil.

[0031] In summary, this allows the side plate to release lubricating oil over a long period of time.

[0032] In practical use, those skilled in the art first add lubricating oil to the oil-absorbing sponge 120 until it is saturated with lubricating oil. Then, the side plate is installed on the high-pressure gear pump, and an appropriate amount of lubricating oil is added again. When the high-pressure gear pump is working, the oil-absorbing sponge 120, which is saturated with lubricating oil, will gradually release the lubricating oil, allowing the lubricating oil to slowly exit from the front of the oil storage hole 110 and the oil outlet groove 140. This lubricating oil then lubricates the gears and gear shaft of the high-pressure gear pump. At the same time, when the gears of the high-pressure gear pump rotate at high speed, they will carry the lubricating oil into the back pressure groove 210. Guided by the back pressure groove 210, the lubricating oil enters the oil storage chamber 220. As more and more lubricating oil enters the oil storage chamber 220, the lubricating oil will gradually enter the second connecting groove 230. Finally, guided by the second connecting groove 230, the lubricating oil returns to the oil storage hole 110, thereby replenishing the oil-absorbing sponge 120 with lubricating oil, thus enabling the oil-absorbing sponge 120 to continuously release lubricating oil.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A bimetallic side plate seal structure for a high pressure gear pump, characterized by: The application relates to a hard alloy layer (100) and a low-carbon steel layer (200), the low-carbon steel layer (200) is fixedly connected to the back side wall of the hard alloy layer (100), oil storage holes (110) are arranged on the left and right sides of the front side wall of the hard alloy layer (100), the inner cavity of the oil storage hole (110) is filled with middle oil absorption sponge (120), a first communication groove (130) is arranged in the hard alloy layer (100), and an oil outlet groove (140) is arranged on one side of the oil storage hole (110).

2. The bimetallic side plate seal structure for a high pressure gear pump of claim 1, wherein: A first oil groove (150) is arranged in the upper side of the front side wall of the hard alloy layer (100).

3. The bimetallic side plate seal structure for a high pressure gear pump of claim 1, wherein: A second oil groove (160) is arranged in the lower side of the front side wall of the hard alloy layer (100).

4. The bimetallic side plate seal structure for a high pressure gear pump of claim 1, wherein: A back pressure groove (210) is arranged in the lower side of the back side wall of the low-carbon steel layer (200), and the back pressure groove (210) is in a W-shaped structure.

5. The bimetallic side plate seal structure for a high pressure gear pump of claim 1, wherein: An oil storage cavity (220) is arranged in the middle of the inner part of the low-carbon steel layer (200).

6. The bimetallic side plate seal structure for a high pressure gear pump of claim 1, wherein: Second communication grooves (230) are arranged on the left and right sides of the inner part of the low-carbon steel layer (200), and the second communication grooves (230) are communicated with the oil storage hole (110) and the oil storage cavity (220).

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