Mechanical valve body for controlling flow direction of brake fluid

Abstract

The utility model belongs to the field of hydraulic valves, and particularly relates to a mechanical valve body for controlling the flow direction of brake fluid, which comprises a valve body and a valve seat, an installation cavity is arranged on the valve body, a through hole is arranged at the bottom of the installation cavity, the valve seat is arranged in the installation cavity and positioned at the end of the installation cavity, a first through hole is arranged on the axis of the valve seat, and a second through hole is arranged on the axis of the valve seat. The lower end of the valve seat is provided with a first counter bore coaxial with the first through hole, the front end of the valve element is arranged in the first counter bore in a sliding fit mode, the tail portion of the valve element is provided with a reset spring, the other end of the reset spring abuts against the bottom of the installation cavity, and the outer circumferential face of the valve element is provided with an installation groove. A connecting protrusion is arranged on the inner wall of the sealing body, a semicircular groove is formed in the peripheral face of the sealing body, the upper end of the sealing body abuts against the end face of the valve seat for sealing, and the valve seat sealing structure has the advantages of being good in sealing effect, convenient to open and simple in structure.

Description

Technical Field

[0001] The utility model belongs to the field of hydraulic valves, and particularly relates to a mechanical valve body for controlling the flow direction of brake fluid. Background Art

[0002] A one-way valve is a device used to control the flow direction of a medium liquid. It is widely used in many fields such as chemical industry, pharmaceutical industry and pipeline installation.

[0003] The current mass-produced mechanical one-way valves all achieve sealing through a tight fit between the valve core and the valve body. In order to ensure the sealing between the two, a large force needs to be applied to the valve core to ensure the sealing between it and the valve body. This also results in a large back pressure requirement for opening the mechanical one-way valve. In addition, the existing one-way valves take up space and are complex to install. Summary of the invention

[0004] In view of the problems existing in the prior art, the utility model designs a mechanical valve body for controlling the flow direction of brake fluid which has good sealing effect, is easy to open and has a simple structure.

[0005] The technical solution of the utility model is as follows:

[0006] A mechanical valve body for controlling the flow direction of brake fluid, comprising a valve body, a mounting cavity being provided on the valve body, a through hole being provided at the bottom of the mounting cavity, and a valve seat being arranged in the mounting cavity and located at the end of the mounting cavity, a first through hole being provided on the axis of the valve seat, a first countersunk hole being coaxial with the first through hole and a valve core being provided at the lower end of the valve seat, the front end of the valve core being slidably fitted in the first countersunk hole, a reset spring being provided at the tail of the valve core, the other end of the reset spring being abutted against the bottom of the mounting cavity, a mounting groove being provided on the outer peripheral surface of the valve core, and a sealing body being annular, a connecting protrusion being provided on the inner wall of the sealing body, a semicircular groove being provided on the outer peripheral surface of the sealing body, and the upper end of the sealing body abutting against the end face of the valve seat for sealing.

[0007] Furthermore, an arc-shaped protrusion is provided in the middle of the installation groove.

[0008] Furthermore, the connecting protrusion and the mounting groove are interference fit.

[0009] Furthermore, a guide component is provided on the front end surface of the valve core, and the guide component cooperates with the inner wall of the first through hole.

[0010] Furthermore, the guide assembly includes a guide rod, the outer circumference of the guide rod is evenly distributed with arc grooves in three equal parts, and the outer circumference of the guide rod cooperates with the inner wall of the first through hole.

[0011] Furthermore, a partition plate is provided at the tail of the valve core, a connecting shaft section is provided on the partition plate, and the return spring is sleeved on the connecting shaft section and abuts against the surface of the partition plate.

[0012] Furthermore, a limiting shaft is provided at the center of the end surface of the connecting shaft section.

[0013] Furthermore, a guide slope is provided on the edge of the front end of the valve core.

[0014] In summary, the utility model has the following beneficial effects:

[0015] The utility model improves the structure of the mechanical valve body. The utility model adopts the cooperation of the sealing body and the valve seat to achieve sealing, and the sealing effect is good. Furthermore, the parts of the utility model are arranged in the axial direction, the structure is compact, and it is easy to miniaturize. The volume is smaller, the layout of the product is more flexible, and it is also convenient to install, which reduces the difficulty of assembly and improves the efficiency of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0017] Figure 2 It is a three-dimensional schematic diagram of the utility model (without the valve body);

[0018] Figure 3 It is a cross-sectional schematic diagram of the utility model (without the valve body);

[0019] Figure 4 It is a three-dimensional schematic diagram of the valve core and the sealing body of the utility model;

[0020] Figure 5 It is a three-dimensional schematic diagram of the valve core of the utility model;

[0021] In the figure, 1 is a valve body, 10 is a mounting cavity, and 11 is a through hole.

[0022] 2 is a valve seat, 20 is a first through hole, 21 is a first countersunk hole,

[0023] 3 is a valve core, 30 is a mounting groove, 301 is an arc-shaped protrusion, 31 is a guide assembly, 310 is a guide rod, 311 is an arc-shaped groove, 32 is a partition plate, 33 is a connecting shaft section, 330 is a limit shaft, 34 is a guide slope,

[0024] 4 is a return spring,

[0025] 5 is a sealing body, 50 is a connecting protrusion, and 51 is a semicircular groove. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0027] It should be noted that when an element is referred to as being "disposed on" or "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is referred to as being "fixed on" another element, or "fixedly connected" to another element, they may be fixed in a detachable manner or in a non-detachable manner. When an element is considered to be "connected" or "rotatably connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used are for illustrative purposes only and do not represent the only implementation method.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to restrict the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] The terms “first”, “second”, “third” and the like in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0030] See also Figure 1 As shown, a mechanical valve body for controlling the flow direction of brake fluid comprises a valve body 1, wherein the valve body 1 is provided with a mounting cavity 10, wherein a through hole 11 is provided at the bottom of the mounting cavity 10, wherein the through hole is a channel for the flow of liquid, and further comprises a valve seat 2, wherein the valve seat 2 is arranged in the mounting cavity 10 and is located at the end of the mounting cavity 10, wherein a first through hole 20 is provided on the axis of the valve seat 2, wherein a first countersunk hole 21 coaxial with the first through hole is provided at the lower end of the valve seat 2, wherein the wall surface of the first countersunk hole is an inclined surface, and a bottom wall of the first countersunk hole is provided. The tail of the valve seat is inclined, and the valve core 3, the front end of the valve core 3 is slidably fitted in the first countersunk hole 21, the tail of the valve core 3 is provided with a reset spring 4, the other end of the reset spring 4 abuts against the bottom of the installation cavity 10, the outer peripheral surface of the valve core 3 is provided with a mounting groove 30, and also includes a sealing body 5, the sealing body 5 is annular, the inner wall of the sealing body 5 is provided with a connecting protrusion 50, the outer peripheral surface of the sealing body 5 is provided with a semicircular groove 51, the upper end of the sealing body 5 abuts against the end face of the valve seat 2 for sealing.

[0031] The utility model designs a mechanical valve body. When the mechanical valve body needs to be opened in the opposite direction, an external force acts on the valve core, causing the valve core to overcome the force of the reset spring and displace to realize the opening of the mechanical valve body. At this time, the valve core moves downward, the end of the sealing body is separated from the end of the valve seat, the mechanical valve body is opened, the size of the valve core is smaller than the size of the first countersunk hole, and the liquid begins to flow through the gap between the two; the valve core moves further downward, and the valve core slides out of the first countersunk hole. At this time, the flow cross-section increases, and the flow rate of the mechanical valve body increases. When the external force disappears, the reset spring pushes the valve core to reset, and the sealing body on the valve core fits the end face of the valve seat. In the utility model, the sealing body is used to seal the end face of the valve seat, and the sealing body is connected to the valve core through the mounting groove and the connecting protrusion. When the sealing performance of the mechanical valve body is insufficient, it is convenient for people to replace the sealing body for maintenance. Moreover, all components of the utility model are installed in one mounting cavity, with a compact structure, which is convenient for realizing miniaturization requirements and more flexible for product layout.

[0032] Furthermore, an arc-shaped protrusion 301 is provided in the middle of the installation groove 30. The arc-shaped protrusion and the semicircular groove on the outer peripheral surface of the sealing body are used to control the deformation direction of the sealing body after being compressed, ensuring that the contact surface between the sealing body and the valve seat is a plane, which has better sealing ability.

[0033] The connecting protrusion 50 and the mounting groove 30 are interference fit, which not only facilitates installation but also ensures the reliability of the connection between the sealing body and the valve core. On the other hand, it cooperates with the aforementioned arc-shaped protrusion to better control the shape of the sealing body after assembly.

[0034] A guide assembly 31 is provided on the front end face of the valve core 3, and the guide assembly cooperates with the inner wall of the first through hole. The guide assembly is used to guide the movement of the valve core in the axial direction to ensure that the valve core will not be biased during movement, and the stability and reliability of the mechanical valve body are better.

[0035] The guide assembly 31 includes a guide rod 310, and the outer circumference of the guide rod is evenly distributed with arc grooves 311 in three equal parts. The outer circumference of the guide rod cooperates with the inner wall of the first through hole. The guide assembly is specifically defined here. The set guide grooves ensure that there is enough flow space between the guide rod and the first through hole, and the flow of the mechanical valve body is guaranteed to meet the mechanical valve body's demand for large flow. The guide rod is arranged in a triangular shape to ensure the structural strength of the guide rod, and the outer circumference of the guide rod must cooperate with the inner wall of the first through hole to ensure the guiding ability of the guide rod. Alternatively, the guide assembly is evenly distributed with quarter-circle grooves on the outer circumference of the guide rod in four equal parts. In this case, the cross-section of the guide rod is cross-shaped.

[0036] The structure of the valve core is further explained below. A partition plate 32 is provided at the tail of the valve core 3, and a connecting shaft section 33 is provided on the partition plate 32. The reset spring 4 is sleeved on the connecting shaft section and abuts against the surface of the partition plate. The partition plate divides the surface of the valve core into an upper sealing body installation area and a lower reset spring installation area. The diameter of the further set connecting shaft section is the same as the outer diameter of the reset spring. The reset spring is directly sleeved on the connecting shaft section for easy installation.

[0037] Furthermore, a limiting shaft 330 is provided at the center of the end surface of the connecting shaft section 33, and there is a distance between the end surface of the limiting shaft and the bottom surface of the installation cavity, thereby limiting the moving distance of the valve core in the axial direction.

[0038] Furthermore, the edge of the front end of the valve core 3 is provided with a guide slope 34. On the one hand, the guide slope increases the area of ​​the flow cross-section between the valve core and the valve seat, further improving the flow of the mechanical valve body to meet the user's demand for large flow. On the other hand, it also has a guiding function, so that the front end of the valve core can be quickly and accurately matched in the first countersunk hole.

[0039] In summary, the utility model has the following beneficial effects:

[0040] The utility model improves the structure of the mechanical valve body. The utility model adopts the cooperation of the sealing body and the valve seat to achieve sealing, and the sealing effect is good. Furthermore, the parts of the utility model are arranged in the axial direction, the structure is compact, and it is easy to miniaturize. The volume is smaller, the layout of the product is more flexible, and it is also convenient to install, which reduces the difficulty of assembly and improves the efficiency of assembly.

[0041] Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

Claims

1. A mechanical valve body for controlling the flow direction of brake fluid, comprising a valve body, characterized in that : The valve body is provided with an installation cavity, a through hole is provided at the bottom of the installation cavity, and also includes a valve seat, the valve seat is arranged in the installation cavity and is located at the end of the installation cavity, a first through hole is provided on the axis of the valve seat, a first countersunk hole coaxial with the first through hole is provided at the lower end of the valve seat, and a valve core, the front end of the valve core slides in the first countersunk hole, a reset spring is provided at the tail of the valve core, the other end of the reset spring abuts against the bottom of the installation cavity, an installation groove is provided on the outer circumferential surface of the valve core, and also includes a sealing body, the sealing body is annular, a connecting protrusion is provided on the inner wall of the sealing body, a semicircular groove is provided on the outer circumferential surface of the sealing body, and the upper end of the sealing body abuts against the end face of the valve seat for sealing.

2. A mechanical valve body for controlling the flow direction of brake fluid according to claim 1, characterized in that: An arc-shaped protrusion is arranged in the middle of the installation groove.

3. A mechanical valve body for controlling the flow direction of brake fluid according to claim 2, characterized in that: The connecting protrusion and the mounting groove are interference fit.

4. A mechanical valve body for controlling the flow direction of brake fluid according to claim 1, characterized in that: A guide component is arranged on the front end surface of the valve core, and the guide component cooperates with the inner wall of the first through hole.

5. A mechanical valve body for controlling the flow direction of brake fluid according to claim 4, characterized in that: The guide assembly comprises a guide rod, the outer circumference of the guide rod is evenly distributed with arc grooves in three equal parts, and the outer circumference of the guide rod is matched with the inner wall of the first through hole.

6. A mechanical valve body for controlling the flow direction of brake fluid according to claim 1, characterized in that: The tail of the valve core is provided with a partition plate, and a connecting shaft section is provided on the partition plate. The reset spring is sleeved on the connecting shaft section and abuts against the surface of the partition plate.

7. A mechanical valve body for controlling the flow direction of brake fluid according to claim 6, characterized in that: A limiting shaft is also provided at the center of the end surface of the connecting shaft section.

8. A mechanical valve body for controlling the flow direction of brake fluid according to claim 7, characterized in that: The edge of the front end of the valve core is provided with a flow guide slope.

Images