A flanged valve block for a hydraulic system

Abstract

This utility model relates to the field of hydraulic valve block technology, and provides a flanged valve block for a hydraulic system, including a valve block body; a conveying groove formed at the lower end of the valve block body, with a main discharge pipe fixedly connected to the lower end of one side of the valve block body, and one side of the main discharge pipe communicating with the interior of the conveying groove; a connecting box fixedly connected to the other side of the valve block body, with a main inlet pipe fixedly connected to one side of the connecting box; and auxiliary discharge pipes fixedly connected at equal intervals to the top of the valve block body, with the bottom end of the auxiliary discharge pipe communicating with the interior of the conveying groove. The flanged valve block for a hydraulic system provided by this solution can utilize connecting sleeves and elastic plates to achieve initial clamping connections between the main inlet pipe, auxiliary discharge pipe, and main discharge pipe to the inner wall of the external flange pipe, facilitating subsequent bolt and nut connections. Furthermore, the use of a first sealing ring and a second sealing ring achieves double sealing during the connection, preventing hydraulic oil leakage and improving its practicality.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic valve block technology, and in particular relates to a flanged valve block for a hydraulic system. Background Technology

[0002] The valve block is an important component in a hydraulic system. It serves as the carrier for other hydraulic components, the channel for connecting oil circuits, and a key component of integrated hydraulic systems. It is mainly used to control the operation of hydraulic oil, enabling the hydraulic system to more accurately control various hydraulic actuators and achieve complex control and automation of the hydraulic system. The flanged valve block is connected to external pipelines through a flange.

[0003] Chinese patent discloses an impact-resistant hydraulic valve block, publication number CN219452561U. The paper proposes "a fixed seat and a main valve body. The main valve body is mounted on the top of the fixed seat, and a rectangular limiting seat is fixedly mounted on the top plate of the fixed seat. Connecting rods are slidably mounted through the bottom surfaces of the inner walls of four limiting seats, and clamping plates are fixedly connected to one end of each of the four connecting rods. One side of each clamping plate abuts against the outer wall of the main valve body. By setting up clamping plates, threaded rods, threaded cylinders, limiting blocks, and limiting rods, when the main valve body needs maintenance, the four clamping plates can be separated from the outer wall of the main valve body by rotating a knob, causing the clamping plates to lose their limiting effect on the main valve body. Therefore, the main valve body can be removed for maintenance. Compared to existing devices that require at least two clamping devices to be rotated to disassemble the main valve body, this device has higher installation and disassembly efficiency, which is beneficial for accelerating maintenance efficiency."

[0004] However, the above-mentioned solutions have poor sealing performance when connected to external pipelines. Existing flange connections usually use gaskets or simple sealing rings, but their sealing structure is relatively simple, which leads to poor sealing performance during long-term use. In addition, because there are multiple reserved holes on the flange, during installation, it is necessary to align the reserved holes and hold it firmly before it can be installed with external bolts and nuts. This increases the labor intensity of workers and makes it inconvenient to use. Therefore, it is necessary to design a flanged valve block for hydraulic systems. Utility Model Content

[0005] This utility model provides a flanged valve block for a hydraulic system, which aims to solve the problems of inconvenient connection and poor sealing of some currently used flanged valve blocks.

[0006] This utility model is implemented as follows: a flanged valve block for a hydraulic system includes a valve block body; a conveying groove formed at the lower end of the valve block body, with a main discharge pipe fixedly connected to the lower end of one side of the valve block body, and one side of the main discharge pipe communicating with the interior of the conveying groove; a connecting box fixedly connected to the other side of the valve block body, with a main inlet pipe fixedly connected to one side of the connecting box, and the other side of the interior of the connecting box communicating with the interior of the conveying groove; a filter assembly assembled inside the connecting box, the filter assembly being used to filter the incoming hydraulic oil; secondary discharge pipes fixedly connected at equal intervals to the top of the valve block body, the bottom end of the secondary discharge pipe communicating with the interior of the conveying groove; and a sealing assembly assembled on the main inlet pipe, secondary discharge pipe, and main discharge pipe, the sealing assembly being used to facilitate connection and sealing with an external flange pipe.

[0007] The sealing assembly includes: a connecting sleeve fixedly connected to the inner wall of the main inlet pipe, the auxiliary outlet pipe and the main outlet pipe, wherein an elastic sheet is fixedly connected at an equal angle to the upper end of the surface of the connecting sleeve; a first sealing ring fixedly connected to the lower end of the surface of the connecting sleeve; and a second sealing ring fixedly connected to the surface of the main inlet pipe, the auxiliary outlet pipe and the main outlet pipe, wherein the interior of the second sealing ring communicates with the interior of the first sealing ring at an equal angle through a through hole.

[0008] Preferably, the connecting sleeve is O-shaped, and the lower end of the inner wall of the connecting sleeve is inclined.

[0009] Preferably, the first sealing ring and the second sealing ring are O-shaped, and one end of the first sealing ring and the second sealing ring protrudes from the surface of the main inlet pipe, the secondary outlet pipe and the main outlet pipe.

[0010] Preferably, the surface of the elastic sheet is provided with anti-slip textures at equal intervals, and the shape of the anti-slip textures is an inverted isosceles trapezoid.

[0011] Preferably, the elastic sheet is inverted L-shaped, and the upper end of one side of the elastic sheet is inclined.

[0012] Preferably, the filter assembly includes: a mounting groove formed on one side of the bottom of the connecting box, and a bolt hole formed on the bottom of the connecting box on one side of the mounting groove; a sealing plate movably connected to one side of the bottom of the connecting box, and a filter plate extending into the interior of the connecting box fixedly connected to the top of the sealing plate; and a mounting block fixedly connected to one side of the sealing plate, and a fixing bolt passing through the mounting block movably connected to the bottom of the mounting block.

[0013] Preferably, a sealing gasket is fixedly connected to the upper end of the surface of the sealing plate, and the cross-sectional area of ​​the sealing gasket is equal to the cross-sectional area of ​​the opening inside the mounting groove.

[0014] Preferably, the upper end of the sealing plate and the interior of the mounting groove form an engaging structure, and the sealing plate is convex in shape.

[0015] Preferably, the top of the fixing bolt and the inside of the bolt hole form a threaded fit, and the bolt hole and the fixing bolt are symmetrically distributed at both ends of the communicating box.

[0016] Preferably, a guide block is fixedly connected to one side of the bottom wall of the communicating box, and the top of the guide block is tilted at an angle of 20 degrees to the horizontal direction.

[0017] Compared with related technologies, the hydraulic system flange valve block provided by this utility model has the following advantages: 1. By utilizing elastic sheets and ensuring their surface adheres tightly to the inner wall of the pipe, while employing anti-slip textures to enhance the anti-slip grip between the elastic sheets and the inner wall of the pipe, initial insertion and fixing of the main inlet pipe, auxiliary outlet pipe, and main outlet pipe to the external flange pipe can be achieved. This is then secured with nuts, eliminating the need for manual bolt and nut installation, which is cumbersome and inconvenient. Simultaneously, a second sealing ring ensures a tight seal between the two components. The compression of the second sealing ring forces some air through a through-hole to the first sealing ring, causing it to expand further. This results in the outer surface of the first sealing ring adhering even more tightly to the inner wall of the external flange pipe, achieving a secondary seal. This allows for convenient connection and double sealing of the main inlet pipe, auxiliary outlet pipe, and main outlet pipe to the external flange pipe, reducing disassembly and assembly difficulties and potential leakage during subsequent hydraulic oil delivery, thus improving its practicality.

[0018] 2. The hydraulic oil entering the connecting box is filtered by the filter plate to prevent impurities from entering the conveying channel and causing partial blockage, which would affect the subsequent hydraulic oil delivery rate and extend the service life of the valve block itself. The filter plate can be removed periodically through the sealing plate to facilitate the discharge of filtered impurities through the installation groove. It also helps to clean and prevent the filter plate from clogging. During installation, the sealing gasket can be used to improve the sealing performance of the sealing plate and the inside of the installation groove, which is convenient for subsequent filtration. Attached Figure Description

[0019] Figure 1 This is a frontal cross-sectional view of the present invention. Figure 2 This is a front view structural diagram of the present utility model; Figure 3 This is a bottom view of the structure of this utility model; Figure 4 This is an exploded enlarged view of a partial cross-section of the connecting box of this utility model; Figure 5 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Sealing assembly; 101. Connecting sleeve; 102. First sealing ring; 103. Second sealing ring; 104. Anti-slip texture; 105. Elastic sheet; 2. Valve block body; 3. Conveying groove; 4. Main inlet pipe; 5. Connecting box; 6. Secondary outlet pipe; 7. Main outlet pipe; 8. Filter assembly; 801. Guide block; 802. Bolt hole; 803. Mounting groove; 804. Fixing bolt; 805. Mounting block; 806. Sealing plate; 807. Sealing gasket; 808. Filter plate. Detailed Implementation

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] Example 1 A preferred embodiment of the hydraulic system flange valve block provided by this utility model is, for example... Figures 1 to 5 The diagram shows a flanged valve block for a hydraulic system, comprising a valve block body 2; a conveying groove 3 formed at the lower end of the valve block body 2, with a main discharge pipe 7 fixedly connected to the lower end of one side of the valve block body 2, the main discharge pipe 7 communicating with the interior of the conveying groove 3 on one side; a connecting box 5 fixedly connected to the other side of the valve block body 2, with a main inlet pipe 4 fixedly connected to one side of the connecting box 5, the other side of the connecting box 5 communicating with the interior of the conveying groove 3; a filter assembly 8 assembled inside the connecting box 5, used for filtering the incoming hydraulic oil; secondary discharge pipes 6 fixedly connected at equal intervals to the top of the valve block body 2, the bottom end of the secondary discharge pipes 6 communicating with the interior of the conveying groove 3; and a sealing assembly 1 assembled on the main inlet pipe 4, the secondary discharge pipe 6, and the main discharge pipe 7, used for facilitating connection and sealing with an external flange pipe.

[0024] The sealing assembly 1 includes: a connecting sleeve 101 fixedly connected to the inner wall of the main inlet pipe 4, the auxiliary outlet pipe 6 and the main outlet pipe 7, with an elastic sheet 105 fixedly connected at equal angles to the upper end of the surface of the connecting sleeve 101; a first sealing ring 102 fixedly connected to the lower end of the surface of the connecting sleeve 101; and a second sealing ring 103 fixedly connected to the surface of the main inlet pipe 4, the auxiliary outlet pipe 6 and the main outlet pipe 7, with the interior of the second sealing ring 103 communicating with the interior of the first sealing ring 102 at equal angles through a through hole.

[0025] It should be noted that some existing flanged valve blocks in hydraulic systems still have certain shortcomings in actual use. Existing flange connections usually use gaskets or simple sealing rings for connection, but their sealing structure is relatively simple, which leads to poor sealing performance during long-term use. In addition, because there are multiple reserved holes on the flange, it is necessary to align the reserved holes and hold it firmly before it can be installed with external bolts and nuts, which increases the labor intensity of the workers and makes it inconvenient to use.

[0026] In this embodiment, the main inlet pipe 4, the auxiliary outlet pipe 6, and the main outlet pipe 7 are connected to the external flange pipe respectively. At this time, the connecting sleeve 101 and the elastic plate 105 are snapped against the inner wall of the external flange pipe. This causes the elastic plate 105 to deform, thereby making the elastic plate 105 tightly adhere to the inner wall of the pipe. The anti-slip texture 104 is used to improve the anti-slip clamping performance between the elastic plate 105 and the inner wall of the pipe, thus achieving the initial insertion and fixing of the main inlet pipe 4, the auxiliary outlet pipe 6, and the main outlet pipe 7 to the external flange pipe. Then, the bolts are passed through the reserved holes on the flange and locked with nuts. This eliminates the cumbersome and inconvenient installation that requires manual assistance. At the same time, the main inlet pipe 4... After the auxiliary discharge pipe 6 and the main discharge pipe 7 are tightly connected and fixed to the external flange pipe, the second sealing ring 103 is used to achieve the sealing of the contact between the two. The second sealing ring 103 will be squeezed, and some of the air inside it will be transported to the inside of the first sealing ring 102 through the through hole, so that the first sealing ring 102 will expand further, and the outer surface of the first sealing ring 102 will be more tightly attached to the inner wall of the external flange pipe, thus achieving a secondary seal. After that, the external hydraulic oil can enter the connecting box 5 through the main inlet pipe 4, and then the hydraulic oil is filtered by the filter assembly 8. The filtered oil can enter the conveying tank 3 and be discharged through the appropriate auxiliary discharge pipe 6 or main discharge pipe 7 according to the actual use requirements.

[0027] In a further preferred embodiment of the present invention, the connecting sleeve 101 is O-shaped, and the lower end of the inner wall of the connecting sleeve 101 is inclined.

[0028] In this embodiment, the connecting sleeve 101 with a sloping lower end is used to allow the hydraulic oil inside the main inlet pipe 4, the auxiliary outlet pipe 6 and the main outlet pipe 7 to be guided out more smoothly.

[0029] In a further preferred embodiment of the present invention, the first sealing ring 102 and the second sealing ring 103 are O-shaped, and one end of the first sealing ring 102 and the second sealing ring 103 protrudes from the surface of the main inlet pipe 4, the secondary outlet pipe 6 and the main outlet pipe 7.

[0030] In this embodiment, the first sealing ring 102 and the second sealing ring 103 of the O-ring are used to facilitate the sealing operation of the main inlet pipe 4, the secondary outlet pipe 6 and the main outlet pipe 7 with the external flange pipe.

[0031] In a further preferred embodiment of the present invention, the surface of the elastic sheet 105 is provided with anti-slip textures 104 at equal intervals, and the shape of the anti-slip textures 104 is an inverted isosceles trapezoid.

[0032] In this embodiment, the anti-slip texture 104 of an inverted isosceles trapezoid is used to improve the clamping and anti-slip properties between the outer surface of the elastic sheet 105 and the inner wall of the flange pipe.

[0033] In a further preferred embodiment of the present invention, the elastic sheet 105 is inverted L-shaped, and the upper end of one side of the elastic sheet 105 is inclined.

[0034] In this embodiment, the elastic sheet 105 with an inclined upper end and an inverted L-shape is used to make it easier for the elastic sheet 105 to be engaged with the inner wall of the external flange pipe, and the elastic sheet 105 is more likely to deform and engage with the inner wall of the pipe.

[0035] Example 2 Based on Embodiment 1, a preferred embodiment of the hydraulic system flange valve block provided by this utility model is as follows: Figures 1 to 5 As shown: The filter assembly 8 includes: a mounting groove 803 formed on one side of the bottom of the connecting box 5, and a bolt hole 802 formed on the bottom of the connecting box 5 on one side of the mounting groove 803; a sealing plate 806 movably connected to one side of the bottom of the connecting box 5, and a filter plate 808 extending into the interior of the connecting box 5 fixedly connected to the top of the sealing plate 806; and a mounting block 805 fixedly connected to one side of the sealing plate 806, and a fixing bolt 804 movably connected to the bottom of the mounting block 805.

[0036] In this embodiment, the filter plate 808 is used to filter the hydraulic oil entering the connecting box 5, preventing impurities from entering the conveying groove 3 and causing partial blockage, which would affect the subsequent hydraulic oil delivery rate and extend the service life of the valve block body 2. At the same time, the fixing bolt 804 can be rotated periodically until it is completely disengaged from the bolt hole 802, and then the sealing plate 806 can be pulled to remove the filter plate 808 from the connecting box 5. With the guidance of the guide block 801, the impurities filtered by the filter plate 808 can be discharged more quickly through the mounting groove 803, and the filter plate 808 can be cleaned. During installation, the filter plate 808 is inserted into the connecting box 5 through the mounting groove 803, and the sealing plate 806 is locked into the mounting groove 803. At this time, the sealing gasket 807 is used to improve the sealing performance between the sealing plate 806 and the mounting groove 803. Then, the fixing bolt 804 is tightened into the bolt hole 802 to ensure the firm and stable installation of the sealing plate 806 and the bottom of the connecting box 5.

[0037] In a further preferred embodiment of the present invention, a sealing gasket 807 is fixedly connected to the upper end of the surface of the sealing plate 806, and the cross-sectional area of ​​the sealing gasket 807 is equal to the cross-sectional area of ​​the opening inside the mounting groove 803.

[0038] In this embodiment, the sealing gasket 807 is used to improve the sealing performance between the sealing plate 806 and the inside of the mounting groove 803.

[0039] In a further preferred embodiment of the present invention, the upper end of the sealing plate 806 and the interior of the mounting groove 803 form an engaging structure, and the sealing plate 806 is convex in shape.

[0040] In this embodiment, the initial engagement of the sealing plate 806 with the inside of the mounting groove 803 is achieved by utilizing the engagement of the convex sealing plate 806 with the inside of the mounting groove 803, and the bottom of the mounting groove 803 is completely covered and sealed.

[0041] In a further preferred embodiment of this utility model, the top of the fixing bolt 804 and the interior of the bolt hole 802 form a threaded fit, and the bolt hole 802 and the fixing bolt 804 are symmetrically distributed at both ends of the connecting box 5.

[0042] In this embodiment, the sealing plate 806 and the bottom of the connecting box 5 are securely assembled and disassembled by using the threaded engagement between the fixing bolt 804 and the bolt hole 802.

[0043] In a further preferred embodiment of this utility model, a guide block 801 is fixedly connected to one side of the bottom wall of the connecting box 5, and the top of the guide block 801 is tilted at an angle of 20 degrees to the horizontal direction.

[0044] In this embodiment, the inclined guide block 801 is used to facilitate the guidance of filtered impurities, making it easier for them to be discharged from the mounting groove 803.

[0045] In summary, the sealing assembly 1 is used to achieve the initial connection and double sealing of the main inlet pipe 4, the auxiliary outlet pipe 6 and the main outlet pipe 7 with the external flange pipe. At the same time, the filter assembly 8 is used to filter the incoming hydraulic oil to prevent impurities from entering the valve block body 2 and causing blockage of subsequent hydraulic oil delivery or damage to the inner wall of the valve block body 2.

[0046] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0047] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0048] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A flanged valve block for a hydraulic system, characterized in that, include: Valve block body (2); A conveying groove (3) is opened at the lower end of the valve block body (2). A main discharge pipe (7) is fixedly connected to the lower end of one side of the valve block body (2). One side of the main discharge pipe (7) is connected to the interior of the conveying groove (3). A connecting box (5) is fixedly connected to the other side of the valve block body (2). A main inlet pipe (4) is fixedly connected to one side of the connecting box (5). The other side of the inside of the connecting box (5) is connected to the inside of the conveying trough (3). A filter assembly (8) is installed inside the communicating box (5) for filtering the hydraulic oil entering the hydraulic system. A secondary discharge pipe (6) is fixedly connected at equal intervals to the top of the valve block body (2), and the bottom end of the secondary discharge pipe (6) is connected to the interior of the conveying groove (3); A sealing assembly (1) is installed on the main inlet pipe (4), the secondary outlet pipe (6) and the main outlet pipe (7), the sealing assembly (1) being used to facilitate connection and sealing with external flange pipes; The sealing assembly (1) includes: A connecting sleeve (101) is fixedly connected to the inner wall of the main inlet pipe (4), the secondary outlet pipe (6) and the main outlet pipe (7). An elastic sheet (105) is fixedly connected at an equal angle to the upper end of the surface of the connecting sleeve (101). A first sealing ring (102) is fixedly connected to the lower end of the surface of the connecting sleeve (101); A second sealing ring (103) is fixedly connected to the surfaces of the main inlet pipe (4), the auxiliary outlet pipe (6) and the main outlet pipe (7). The interior of the second sealing ring (103) is connected to the interior of the first sealing ring (102) through a through hole at equal angles.

2. The hydraulic system flanged valve block as described in claim 1, characterized in that, The connecting sleeve (101) is O-shaped, and the lower end of the inner wall of the connecting sleeve (101) is inclined.

3. The hydraulic system flanged valve block as described in claim 1, characterized in that, The first sealing ring (102) and the second sealing ring (103) are O-shaped, and one end of the first sealing ring (102) and the second sealing ring (103) protrudes from the surface of the main inlet pipe (4), the secondary outlet pipe (6) and the main outlet pipe (7).

4. The hydraulic system flanged valve block as described in claim 1, characterized in that, The surface of the elastic sheet (105) is provided with anti-slip textures (104) at equal intervals, and the shape of the anti-slip textures (104) is an inverted isosceles trapezoid.

5. The hydraulic system flanged valve block as described in claim 1, characterized in that, The elastic sheet (105) is inverted L-shaped, and the upper end of one side of the elastic sheet (105) is inclined.

6. The hydraulic system flanged valve block as described in claim 1, characterized in that, The filter assembly (8) includes: An installation groove (803) is provided on one side of the bottom of the connecting box (5), and a bolt hole (802) is provided on the bottom of the connecting box (5) on one side of the installation groove (803). A sealing plate (806) is movably connected to one side of the bottom of the connecting box (5), and a filter plate (808) extending into the interior of the connecting box (5) is fixedly connected to the top of the sealing plate (806). A mounting block (805) is fixedly connected to one side of the sealing plate (806), and a fixing bolt (804) is movably connected to the bottom end of the mounting block (805).

7. The hydraulic system flanged valve block as described in claim 6, characterized in that, A sealing gasket (807) is fixedly connected to the upper end of the surface of the sealing plate (806), and the area of ​​the cross-section of the sealing gasket (807) is equal to the area of ​​the cross-section of the opening inside the mounting groove (803).

8. The hydraulic system flanged valve block as described in claim 6, characterized in that, The upper end of the sealing plate (806) and the interior of the mounting groove (803) form a locking structure, and the sealing plate (806) is convex in shape.

9. The hydraulic system flanged valve block as described in claim 6, characterized in that, The top of the fixing bolt (804) and the inside of the bolt hole (802) form a threaded fit. The bolt hole (802) and the fixing bolt (804) are symmetrically distributed at both ends of the connecting box (5).

10. The hydraulic system flanged valve block as described in claim 1, characterized in that, A guide block (801) is fixedly connected to one side of the bottom wall of the connecting box (5), and the top of the guide block (801) is tilted at an angle of twenty degrees to the horizontal direction.

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