Hydraulic proportional valve

Abstract

The utility model discloses a hydraulic proportional valve which comprises a hydraulic proportional valve body and a filtering mechanism, a circulation cavity is formed in the hydraulic proportional valve body, the filtering mechanism is installed in the hydraulic proportional valve body and used for filtering, an installation groove is formed in the circulation cavity, and the installation groove is communicated with the circulation cavity. According to the filter device, the filter mechanism can be limited and fixed after being adjusted by a certain angle during installation, and the filter device is stable and reasonable in structural design and relatively high in practicability and has certain use value and popularization value.

Description

Technical Field

[0001] This utility model relates to the field of proportional valve technology, and in particular to a hydraulic proportional valve. Background Technology

[0002] A hydraulic proportional valve is a valve used to precisely control the flow rate or pressure of fluid in a hydraulic system. Unlike traditional hydraulic control valves, proportional valves can provide continuously adjustable output according to changes in the input signal.

[0003] A Chinese patent for a mechanical hydraulic proportional valve (application number CN201922135717.8, application date 2019-12-03) uses a filter plate, buffer plate, rotating rod, fixed rod, first spring, moving block, positioning plate, limiting plate, pull rod, and first spring in combination to filter water and prevent water residue from affecting its transmission. However, although this solution can filter residue, the connection method between the limiting plate and the second spring makes the limiting plate lack longitudinal support and limiting effect.

[0004] In summary, a hydraulic proportional valve is needed to address the shortcomings of existing technologies. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a hydraulic proportional valve, aiming to solve the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic proportional valve, comprising a hydraulic proportional valve body and a filtering mechanism. The hydraulic proportional valve body has a flow cavity inside, and the filtering mechanism is installed inside the hydraulic proportional valve body for filtering. The flow cavity has an installation groove, and a rotating support mechanism is installed inside the installation groove. The rotating support mechanism is used to rotatably connect to the filtering mechanism. The rotating support mechanism allows the filtering mechanism to be adjusted at a certain angle during installation and then fixed in a limited position. Its structural design is stable and reasonable, and its practicality is relatively strong.

[0007] Furthermore, the hydraulic proportional valve body is provided with a rotary positioning port for connecting the filter mechanism, and a limit slot is provided on one side wall of the rotary positioning port.

[0008] Furthermore, the filtration mechanism includes a connector, a filter element, and a mounting bracket. The connector is connected to the filter element, and the end of the filter element away from the connector is connected to the mounting bracket.

[0009] Furthermore, one side of the connector is provided with a locking head for fitting into the connection limiting slot, and the top wall of the connector is provided with a protrusion for easy rotation and disassembly.

[0010] Furthermore, the rotary support mechanism includes a bearing seat and a horizontal rotating seat. The bearing seat is disposed on an installation groove opened in the flow cavity, and the horizontal rotating seat is movably mounted on the bearing seat. An annular slide head is connected to the bottom wall of the horizontal rotating seat.

[0011] Furthermore, an annular groove is provided on the top periphery of the flow cavity near the mounting groove, and the annular groove is used to adapt and connect the annular slide head.

[0012] Furthermore, the limiting slot has an L-shaped cross-section when viewed from the side.

[0013] The beneficial effects of this utility model are:

[0014] 1. In this utility model, by setting a rotating positioning port and a rotating support mechanism, the filter mechanism can be adjusted at a certain angle and then fixed in a limited position during installation. Its structural design is stable and reasonable, and its practicality is relatively strong.

[0015] 2. In this utility model, the rotating support mechanism is composed of a shaft seat and a horizontal rotating seat. The annular slide head at the bottom of the horizontal rotating seat cooperates with the annular slide groove to provide stable support rotation, and can also isolate the flow cavity and the mounting groove to a certain extent.

[0016] 3. In this utility model, by setting the ground limiting slot to an L-shaped side view cross section, the card head structure can achieve convenient disassembly and assembly and fixed limiting effect on a very simple structural basis. The structure is simple and reasonable, with relatively strong practicality, and has certain use value and promotion value. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a partial cross-sectional view of the structure of this utility model.

[0020] Figure 3 for Figure 2 Enlarged schematic diagram of the structure of section A in the middle.

[0021] Figure 4 This is a top view of the structure of this utility model.

[0022] In the diagram: 1-hydraulic proportional valve body, 11-flow cavity, 111-mounting groove, 112-annular slide groove; 12-rotary positioning port, 121-limiting slot; 2-filtering mechanism, 21-connector, 211-clamp head, 212-protrusion head, 22-filter element, 23-clamp seat; 3-rotary support mechanism, 31-shaft seat, 32-horizontal rotating seat, 321-annular slide head, 322-cross protrusion head. Detailed Implementation

[0023] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0025] like Figure 1 , 2 As shown in Figures 3 and 4, a hydraulic proportional valve includes a hydraulic proportional valve body 1 and a filter mechanism 2. The hydraulic proportional valve body 1 has a flow chamber 11 inside. The filter mechanism 2 is installed inside the hydraulic proportional valve body 1 and is used for filtration. The flow chamber 11 has an installation groove 111 inside. A rotating support mechanism 3 is installed inside the installation groove 111 and is used to rotatably connect the filter mechanism 2.

[0026] In one embodiment, the hydraulic proportional valve body 1 is provided with a rotary positioning port 12 for connecting the filter mechanism 2, and a limit slot 121 is provided on one side wall of the rotary positioning port 12.

[0027] In one embodiment, the filter mechanism 2 includes a connector 21, a filter element 22, and a retainer 23. The connector 21 is connected to the filter element 22, and the end of the filter element 22 away from the connector 21 is connected to the retainer 23.

[0028] In one embodiment, the inner wall of the rotating positioning port 12 is provided with a waterproof sealing ring for fitting the connector 21.

[0029] In one embodiment, the connector 21 has a clip 211 on one side for fitting the connection limiting slot 121, and a protrusion 212 on the top wall of the connector 21 for easy rotation and disassembly.

[0030] In one embodiment, the rotating support mechanism 3 includes a bearing seat 31 and a horizontal rotating seat 32. The bearing seat 31 is provided on the mounting groove 111 opened in the flow cavity 11, and the horizontal rotating seat 32 is movably mounted on the bearing seat 31. The bottom wall of the horizontal rotating seat 32 is connected to an annular slide head 321.

[0031] In one embodiment, an annular groove 112 is provided on the top periphery of the flow cavity 11 near the mounting groove 111. The annular groove 112 is used to adapt and connect the annular slide head 321.

[0032] In one embodiment, the horizontal rotating seat 32 is provided with a cross protrusion 322, and the horizontal rotating seat 32 is fixedly connected to the card seat 23 of the filter mechanism 2 through the cross protrusion 322 (the bottom wall of the card seat 23 is provided with a cross-shaped card slot for adapting to the cross protrusion 322), so that when the filter mechanism 2 is rotated, the card seat 23 drives the horizontal rotating seat 32 on the shaft seat 31.

[0033] As one implementation method, the limiting slot 121 has an L-shaped side view cross-section. When the filter mechanism 2 is conveniently installed through the L-shaped limiting slot 121, the card head 211 is first vertically inserted into the limiting slot 121, and then rotated at a certain angle to limit the position. The structure is relatively simple and does not require the use of a spring structure.

[0034] The working principle of this utility model is as follows: In use, fluid filtration is performed by the filter mechanism 2 installed on the hydraulic proportional valve body 1. Specifically, the filter mechanism 2 is installed by the rotating positioning port 12 and the rotating support mechanism 3. First, the clamp 211 of the connector 21 is vertically inserted into the limiting groove 121. Then, it is rotated at a certain angle and limited. The filter element 22 and the clamp 23 are inserted into the flow cavity 11. The clamp 23 is fixed by aligning with the cross protrusion 322 of the horizontal rotating seat 32 (the rotating connector 21 drives the filter element 22 and the clamp 23 to rotate and adjust on the horizontal rotating seat 32. The horizontal rotating seat 32 rotates in conjunction with the shaft seat 31. At the same time as the horizontal rotating seat 32 rotates, the annular slide head 321 at its bottom is slidably connected to the annular slide groove 112). The filter element 22 is inside the hydraulic proportional valve body 1 to filter the fluid that needs to pass through the flow cavity 11.

[0035] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-mentioned technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A hydraulic proportional valve comprising a hydraulic proportional valve valve body (1) and a filtering mechanism (2), the hydraulic proportional valve valve body (1) is internally provided with a flow passage cavity (11), characterized in that, The filtering mechanism (2) is installed in the hydraulic proportional valve body (1), the filtering mechanism (2) is used for filtering, the inside of the flow cavity (11) is provided with an installation groove (111), the inside of the installation groove (111) is provided with a rotating supporting mechanism (3), and the rotating supporting mechanism (3) is used for rotationally connecting the filtering mechanism (2).

2. The hydraulic proportional valve of claim 1, wherein The hydraulic proportional valve body (1) is provided with a rotating positioning opening (12) for connecting the filtering mechanism (2), and the side wall of the rotating positioning opening (12) is provided with a limiting clamping groove (121).

3. The hydraulic proportional valve of claim 2, wherein The filtering mechanism (2) comprises a connecting head (21), a filter core (22) and a clamping seat (23), the connecting head (21) is connected with the filter core (22), and the end, away from the connecting head (21), of the filter core (22) is connected with the clamping seat (23).

4. The hydraulic proportional valve of claim 3, wherein One side of the connecting head (21) is provided with a clamping head (211) for adapting to the limiting clamping groove (121), and the top wall of the connecting head (21) is provided with a convex head (212) for facilitating rotation and disassembly.

5. The hydraulic proportional valve of claim 1, wherein The rotating supporting mechanism (3) comprises a shaft seat (31) and a horizontal rotating seat (32), the shaft seat (31) is arranged on the installation groove (111) of the flow cavity (11), the horizontal rotating seat (32) is movably arranged on the shaft seat (31), and the bottom wall of the horizontal rotating seat (32) is connected with an annular sliding head (321).

6. The hydraulic proportional valve of claim 5, wherein The top side of the flow cavity (11) is provided with an annular sliding groove (112) close to the installation groove (111), and the annular sliding groove (112) is used for adapting to the annular sliding head (321).

7. The hydraulic proportional valve of claim 4, wherein The limiting clamping groove (121) is L-shaped in side view.

Images