Large-plane sealing structure of liquid pump

Abstract

The utility model provides a large-plane sealing structure of a liquid pump, and belongs to the technical field of hydraulic pumps. According to the utility model, the isolation cavities which are recessed inwards are arranged on the original larger general plane for sealing, the general plane is divided into a plurality of smaller sealing planes through the isolation cavities, and a plurality of holes in the general plane are divided into a plurality of groups and are respectively arranged in different sealing planes; through the arrangement of the isolation cavities, the whole large plane sealing is converted into a plurality of independent small planes to achieve sealing, only the planeness and roughness of a single small plane need to be guaranteed during machining and sealing, and different sealing planes do not interfere with one another; compared with the prior art, original overall flatness and roughness are converted into flatness and roughness of a plurality of small planes, and the sealing area is reduced, so that the product scrap risk caused by collision in the processes of machining, transportation, storage and the like is reduced, the machining cost is lower, the machining efficiency is higher, and large-scale popularization and application of products are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic pump technical field, concretely relates to a big plane sealing structure of liquid pump. BACKGROUND

[0002] As the main structure in hydraulic pipeline system, hydraulic pump provides driving force for the flow of medium in pipeline and plays a vital role.

[0003] For some larger size hydraulic pump, such as K7V, K5V, K3V, etc. with large plane, the sealing of large plane has been the focus of the industry, and there is still no better solution, therefore, the oil leakage phenomenon is still common, easy to occur and difficult to solve in the existing hydraulic system, in addition to improving the sealing performance from the selection of parts materials, sealing elements, etc., the influence of sealing surface processing factors also needs to be considered.

[0004] For these structures with large sealing plane, in order to improve the sealing effect, it is necessary to ensure the flatness and roughness of the large plane, the higher the flatness and the smaller the roughness, the better the sealing performance. However, the existing equipment for processing large plane usually adopts milling and grinding processing to obtain the large plane for sealing. However, due to the limitation of processing technology, the existing processing equipment can only try to improve the processing precision, and the larger the processed plane, the higher the processing difficulty, it is still impossible to completely guarantee that the flatness and roughness of the entire plane meet the use requirements, and there is still a high risk of oil leakage. At present, the industry can only use processing equipment with high processing precision to process the large plane, and try to reduce the number of holes on the large plane. However, using processing equipment with higher processing precision to process products also means that the processing cost is increased and the processing efficiency is reduced, which has a negative effect on the production and manufacturing of hydraulic pump. In addition, after reducing the number of holes on the large plane, it is necessary to redesign the flow channel, which leads to more complex product structure, increases the processing cost and reduces the processing efficiency, which is not conducive to the large-scale popularization and application of products. SUMMARY

[0005] To address the aforementioned problems in existing technologies, this paper aims to provide a large-plane sealing structure for a liquid pump. This structure involves creating recessed isolation cavities on the sealing plane, dividing the plane into multiple sealing regions. The orifices of the holes are located within each sealing region, thus transforming the large-plane sealing into multiple smaller-area sealing surfaces that do not interfere with each other. This effectively reduces product scrap caused by impacts during processing, transportation, and storage. Furthermore, it allows for the differentiation of overall flatness and roughness into multiple zones during processing, requiring only that each zone meets its own flatness and roughness requirements. This reduces process requirements and eliminates the need for complex designs. While improving sealing performance, it also reduces processing costs and increases processing efficiency, facilitating large-scale product application.

[0006] The specific technical solution is as follows:

[0007] A large planar sealing structure for a liquid pump is provided on the liquid pump, including an overall plane for sealing, and the overall plane is provided with a plurality of holes. It is characterized by having an isolation cavity recessed into the overall plane, the overall plane being divided into multiple sealing planes by the isolation cavity, the plurality of holes being divided into several groups, and the holes in different groups being respectively provided in different sealing planes, and holes with the same function and / or close to each other being located in the same sealing plane.

[0008] The above-mentioned large flat sealing structure of a liquid pump has different sealing planes located in the same horizontal plane.

[0009] The aforementioned large flat sealing structure for a liquid pump further includes an integral sealing gasket, which covers the overall flat surface and has clearance holes corresponding to the openings.

[0010] The aforementioned large flat sealing structure of a liquid pump further includes a split sealing gasket, with each sealing plane corresponding to a split sealing gasket, and each split sealing gasket having an avoidance hole corresponding to the hole on the corresponding sealing plane.

[0011] The above-mentioned large planar sealing structure of a liquid pump has an outer wall of an isolation cavity formed by a continuous arrangement along the outer edge of the overall planar surface.

[0012] In the aforementioned large-plane sealing structure of a liquid pump, the corners of the sidewalls of the isolation chamber are all arc-shaped corners.

[0013] The above-mentioned large flat sealing structure of a liquid pump has several sealing grooves on each sealing plane, and the shape of each sealing groove is consistent with the shape of a contour edge of the sealing plane.

[0014] The large plane sealing structure of the liquid pump, wherein the groove depth of each inner sealing groove ranges from 0.05mm to 0.2mm.

[0015] The technical scheme has the following beneficial effects:

[0016] The large plane sealing structure of the liquid pump, wherein the groove depth of each inner sealing groove ranges from 0.05mm to 0.2mm. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The large plane sealing structure of the liquid pump, wherein the groove depth of each inner sealing groove ranges from 0.05mm to 0.2mm.

[0018] Figure 2 The large plane sealing structure of the liquid pump, wherein the groove depth of each inner sealing groove ranges from 0.05mm to 0.2mm.

[0019] In the drawings: 1, overall plane; 11, sealing plane; 2, hole; 3, isolation cavity. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the following embodiments are combined with the accompanying drawings to illustrate the present application. Figure 1 to the accompanying drawings Figure 2 The technical scheme of the present application is described in detail, but the following content is not as a limitation of the present application.

[0021] Figure 1 The large plane sealing structure of the liquid pump, wherein the groove depth of each inner sealing groove ranges from 0.05mm to 0.2mm. Figure 1As shown, the existing flat surface for sealing on the liquid pump is a large overall flat surface 1, that is, only one large flat surface is used to achieve sealing, and a plurality of holes 2 are formed on the large overall flat surface 1, so that after the flat surfaces are abutted, the holes 2 can achieve the conduction of the flow channel. At this time, the sealing is completely achieved by the large overall flat surface 1. Due to the limitation of the machining process and the influence of the machining precision, it is difficult to ensure the flatness and roughness of the large overall flat surface 1, so there is still a large risk of leakage after the abutted sealing is achieved. In addition, it is also necessary to use machining equipment with higher machining precision, and more machining processes and more machining time are required, which leads to the increase of the processing cost of the product, the decrease of the processing efficiency, and is not conducive to the popularization and application of the product.

[0022] Figure 2 The structure diagram of the embodiment of the large flat surface sealing structure of the liquid pump. Figure 2 As shown, the large flat surface sealing structure of the liquid pump provided in the embodiment is also used on the liquid pump, and comprises an overall flat surface 1 for sealing. The area of the overall flat surface 1 is large, and the structure thereof is the same as that of the above-mentioned existing overall large flat surface. At this time, the overall flat surface 1 is provided with an isolation cavity 3 recessed inwardly of the overall flat surface 1, and the isolation cavity 3 avoids the hole openings of all the holes 2 on the overall flat surface 1, so as to avoid interference with the arrangement of the holes 2. The overall flat surface 1 is divided into a plurality of sealing flat surfaces 11 by the isolation cavity 3, that is, the sealing of the overall large flat surface is converted into the sealing of a plurality of small flat surfaces, and the different small flat surfaces are independent of each other and do not affect each other, so that the sealing after installation is more reliable, the risk of oil leakage is reduced, and the service life is prolonged. In addition, the area of each sealing flat surface 11 is also reduced, which can reduce the risk of product scrapping caused by bumps during processing, transportation and storage, and the product damage prevention capability is better. At the same time, the processing of the small flat surfaces can reduce the processing technology of the product, convert the overall flatness and roughness into the flatness and roughness of a plurality of small flat surfaces, and do not need to ensure that all the flat surfaces are consistent, thereby reducing the processing requirements and the processing cost, improving the processing efficiency, and facilitating the large-scale popularization and application of the product. In addition, the plurality of holes 2 are divided into a plurality of groups, and the holes 2 in different groups are arranged in different sealing flat surfaces 11, so as to ensure that the different sealing flat surfaces 11 can seal different groups of holes 2. Preferably, the holes 2 with the same function and / or close distance are located in the same sealing flat surface 11, which meets the requirement of partition sealing, improves the sealing performance, reduces the processing difficulty, improves the processing efficiency, and reduces the processing cost.

[0023] More specifically, in order to improve the convenience of processing and installation, the plurality of sealing planes 11 separated are arranged in the same plane, that is, the flatness of the entire contact plane is ensured, the initial plane is facilitated to be processed as a whole, and the problem that individual adaptive adjustment and installation are required due to the different sealing planes 11 arranged in different planes during subsequent installation is prevented, and the structural design is more reasonable.

[0024] More specifically, when the overall plane 1 is sealed, the overall sealing gasket needs to be arranged, at this time, the overall sealing gasket is covered on the overall plane 1, and during installation, the overall sealing gasket is only needed to be placed on the overall plane 1, which is more convenient for installation, and further improves the sealing performance. In addition, the avoiding hole corresponding to the hole 2 is arranged on the overall sealing gasket, which provides conditions for maintaining the smoothness of the hole 2 after subsequent assembly and sealing.

[0025] In addition, the embodiment also provides another shape of the sealing gasket. At this time, the sealing gasket is a split sealing gasket, and each sealing plane 11 corresponds to a split sealing gasket during assembly and sealing, that is, each sealing plane 11 is individually sealed, which avoids the problem of material waste caused by arranging the sealing gasket between the isolation cavities 3, and saves the cost under the condition of meeting the sealing. In addition, the avoiding hole corresponding to the hole 2 on the corresponding sealing plane 11 is arranged on each split sealing gasket, and the smoothness of the hole 2 on the corresponding sealing plane 11 after assembly and sealing can also be maintained through the avoiding hole, which meets the assembly requirement.

[0026] More specifically, the outer edge of the overall plane 1 is arranged continuously, that is, the outer edge of the overall plane 1 is a ring structure, which maintains the integrity of the large plane outside for sealing, thereby meeting the original installation requirement without the need for additional operation, and the outer edge of the overall plane 1 forms the outer cavity wall of the isolation cavity 3, so that the isolation cavity 3 is only an internal structure and will not be exposed to the outside, which will not affect the external structure, and the structural design is more reasonable.

[0027] More specifically, the corners of the cavity side wall of the isolation cavity 3 are all arranged as arc corners, which realizes the smooth transition of the corners of the front side wall of the isolation cavity 3, avoids the occurrence of processing dead angles, facilitates processing, and avoids the problem that some sealing planes 11 are prone to cracking and damage due to stress concentration, which affects the structural stability, and the structural design is more reasonable.

[0028] More specifically, a plurality of sealing grooves are also formed on each sealing plane 11, the shape of each sealing groove is consistent with the shape of the outline edge of the sealing plane 11, through the arrangement of the sealing grooves, the deformation of the sealing gasket can be accommodated in the subsequent sealing process, thereby increasing the sealing contact surface, prolonging the sealing length, and improving the sealing effect. Preferably, the number of sealing grooves is determined according to the minimum distance between the outer contour line of the sealing plane 11 and the hole of the hole 2, when the above-mentioned minimum distance is less than 4 times the groove width of the sealing groove, only one sealing groove is arranged, and the above-mentioned minimum distance, a sealing groove is arranged every 4 times the groove width of the sealing groove, which avoids the problem of affecting the structural strength caused by excessive arrangement of the sealing groove.

[0029] More specifically, the groove depth of each inner sealing groove is in the range of 0.05-0.2mm, preferably, the groove depth of the sealing groove is 0.1mm, which can avoid the problem of excessive unevenness of the sealing groove on the overall surface of the sealing plane 11, thereby ensuring the efficiency of the overall processing, in addition, it can also avoid affecting the structural strength of the sealing plane 11, and the structural design is more reasonable.

[0030] The large plane sealing structure of the liquid pump provided by the embodiment, by arranging the inwardly recessed isolation cavity 3 on the original larger overall plane 1 for sealing, the overall plane 1 is divided into a plurality of smaller sealing planes 11 by the isolation cavity 3, and a plurality of holes 2 on the overall plane 1 are divided into a plurality of groups, the holes 2 of different groups are arranged in different sealing planes 11 respectively, and the overall large plane sealing is converted into a plurality of independent small planes to realize sealing through the arrangement of the isolation cavity 3, only the flatness and roughness of a single small plane need to be ensured during sealing, the flatness and roughness of the overall plane are converted into the flatness and roughness of a plurality of small planes, the processing difficulty is reduced, the leakage prevention effect is better, and the sealing area is also reduced, thereby reducing the risk of product scrapping caused by bumps in the processes of processing, transportation and storage, reducing the processing cost, improving the processing efficiency, and facilitating large-scale popularization and application of the product.

[0031] The above is only the preferred embodiment of the present application, and does not limit the implementation and protection scope of the present application. For those skilled in the art, it should be realized that any equivalent replacement and obvious change obtained by applying the contents of the present application and the drawings should be included in the protection scope of the present application.

Claims

1. A large planar sealing structure of a liquid pump, provided on a liquid pump, comprising a general plane for sealing, and a plurality of holes of a hole opening provided on the general plane, characterized in that, The total plane is provided with isolation cavities recessed inwardly in the total plane, the total plane is divided into multiple sealed planes by the isolation cavities, the holes are divided into multiple groups, and the holes in different groups are arranged in different sealed planes respectively, and the holes with the same function and / or similar distance are arranged in the same sealed plane.

2. The large planar seal structure of a liquid pump according to claim 1, wherein The different sealed planes are in the same plane.

3. The large planar seal structure of a liquid pump according to claim 1, wherein The total sealing gasket is arranged on the total plane, and the total sealing gasket is provided with avoiding holes corresponding to the holes.

4. The large face seal of a liquid pump of claim 1, wherein, The split sealing gasket corresponding to each sealed plane is arranged, and the split sealing gasket is provided with avoiding holes corresponding to the holes on the corresponding sealed plane.

5. The large face seal of a liquid pump of claim 1, wherein, The outer edge of the total plane is continuously arranged and forms the outer cavity wall of the isolation cavity.

6. The large face seal of a liquid pump of claim 1, wherein, The corners of the cavity side wall of the isolation cavity are arc corners.

7. The large face seal of a liquid pump of claim 1, wherein, A plurality of sealing grooves are arranged on each sealed plane, and the shape of each sealing groove is consistent with the shape of the outline edge of the sealed plane.

8. The large planar seal structure of a liquid pump according to claim 7, wherein The depth of each inner sealing groove ranges from 0.05 mm to 0.2 mm.

Images