Servo valve with standby flow channel

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a servo valve with a standby flow channel, which comprises a valve body, a flow inlet channel fixedly connected with one side of the valve body, a flow outlet channel fixedly connected with the other side of the valve body, and a rotatable valve core arranged in the valve body, the valve element comprises a self-rotating body and a liquid passing groove formed in one side of the self-rotating body, and the self-rotating body rotates in the valve body to adjust one of the common flow channel and the standby flow channel to be communicated or closed with the flow inlet channel. When a main line of the common flow channel breaks down and needs to be maintained, only the valve needs to be closed, a pipeline connecting the outside and the common flow channel is communicated with the standby flow channel, and then the standby flow channel is matched with the flow inlet channel, so that the flow control can be realized, and the shutdown time when the common flow channel is maintained is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a servo valve with a spare flow channel. Background Art

[0002] A servo valve is a device used to control fluid flow and pressure. It's commonly used in hydraulic systems to precisely control the flow and direction of fluids by adjusting the position of a valve core. A servo valve uses mechanical or electromagnetic technology to control the movement of the valve core. In hydraulic systems, a servo valve is typically driven by a control signal (such as current or pressure) to respond to user demands for fluid flow and pressure. By changing the position of the valve core, a servo valve can adjust or cut off fluid flow, thereby achieving precise control of the hydraulic system.

[0003] Current servo valves usually have only one flow channel, which means that when the outlet flow channel of the servo valve fails and needs to be repaired, the servo valve can no longer be used, which increases the duration of system interruption or downtime and reduces the effectiveness of use.

[0004] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Utility Model Content

[0005] The purpose of this utility model is to design a servo valve with a spare flow channel, which can quickly restore flow control after the normal flow channel is damaged, thereby reducing the downtime for repairing the normal flow channel, so as to solve the above-mentioned deficiencies in the technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a servo valve with a spare flow channel, comprising a valve body, an inlet flow channel fixedly connected to one side of the valve body, an outlet flow channel fixedly connected to the other side of the valve body, and a rotatable valve core installed in the valve body, the outlet flow channel is composed of a common flow channel and a spare flow channel, the valve core includes a rotating body and a liquid groove opened on one side of the rotating body, and the rotating body adjusts one of the common flow channel or the spare flow channel to be connected or closed with the inlet flow channel by rotating in the valve body.

[0007] Preferably, the valve body and the rotating body are configured as a sphere as a whole, and the liquid passage groove is configured as a vertically opened arc.

[0008] Preferably, both ends of the arc-shaped liquid-passing groove are rounded on one side close to the central axis of the rotating body.

[0009] Preferably, a transmission shaft is fixedly connected to the top of the rotator, and a power component for controlling the rotation direction of the transmission shaft is installed on the top of the transmission shaft.

[0010] Preferably, the power assembly includes a gear connected to the top of the transmission shaft, a rack meshing on one side of the gear, a hydraulic rod arranged at one end of the rack, and a connecting rod arranged at the other end of the gear. The output end of the hydraulic rod is fixedly connected to the end of the rack, and the other end of the hydraulic rod passes through the connecting rod and is slidably connected to the connecting rod. The connecting rod, the hydraulic rod, the inlet channel and the outlet channel are fixedly connected to a shell, and the shell can be opened.

[0011] Preferably, the gear of the power assembly is fixed to the rotating shaft by a latch, which facilitates disassembly and maintenance.

[0012] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0013] 1. When the main line of the common flow channel fails and needs maintenance, this product only needs to close the valve and connect the pipe connecting the outside world to the common flow channel with the spare flow channel. Then, the flow rate can be controlled by using the coordination between the spare flow channel and the inlet flow channel, thus reducing the downtime for maintenance of the common flow channel.

[0014] 2. To adjust the flow rate of the fluid, you only need to adjust the angle of the rotating body so that the inlet and outlet channels coincide with the liquid groove. Then, adjust the overlapping area of ​​one of the inlet or outlet channels and the liquid groove. The larger the overlapping area, the greater the flow rate, thereby achieving precise control of the fluid flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a three-dimensional diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the valve closing of the utility model;

[0019] Figure 4 This is a schematic diagram of the common flow channel of the present invention;

[0020] Figure 5 This is a schematic diagram of the backup flow channel of the utility model being opened.

[0021] Description of reference numerals:

[0022] 1. Valve body; 2. Inlet channel; 3. Outlet channel; 301. Normal flow channel; 302. Alternate flow channel; 4. Valve core; 401. Rotating body; 402. Liquid channel; 5. Drive shaft; 6. Power assembly; 601. Gear; 602. Rack; 603. Hydraulic rod; 604. Connecting rod; 605. Housing. DETAILED DESCRIPTION

[0023] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0024] Example:

[0025] like Figure 1-5 As shown, it includes a spherical valve body 1, an inlet channel 2 fixedly connected to one side of the valve body 1, an outlet channel 3 fixedly connected to the other side of the valve body 1, and a rotatable spherical valve core 4 installed in the valve body 1, the outlet channel 3 is composed of a common channel 301 and a spare channel 302, the valve core 4 includes a rotating body 401 and an arc-shaped liquid groove 402 opened on one side of the rotating body 401, a transmission shaft 5 is fixedly connected to the top of the rotating body 401, a gear 601 is fixedly connected to the top of the transmission shaft 5, a rack 602 is meshed with one side of the gear 601, one end of the rack 602 passes through and is slidably connected to a connecting rod 604, and the other end is fixedly connected to the output end of the hydraulic rod 603, and an openable shell 605 is fixedly connected to the outside of the connecting rod 604, the inlet channel 2, and the outlet channel 3 hydraulic rod 603.

[0026] During operation, by manipulating the output shaft of the hydraulic rod 603 to extend or shorten, the rack 602 is driven to move laterally, and the rack 602 drives the gear 601 to rotate, and the gear 601 drives the transmission shaft 5 to rotate, and the transmission shaft 5 drives the rotating body 401 to rotate in the valve body 1. When the liquid groove 402 on one side of the rotating body 401 rotates to between the common flow channel 301 and the inlet flow channel 2, so that the inlet flow channel 2 and the common flow channel 301 are connected, the valve is opened. If the liquid groove 402 is only connected to the inlet flow channel 2, the valve is closed. When the common flow channel 301 fails and needs maintenance, it is only necessary to close the valve first, and then connect the pipeline connected to the common flow channel 301 from the outside world with the spare flow channel 302, and then operate the output shaft of the hydraulic rod 603 to move, so that the inlet flow channel 2 and the spare flow channel 302 are connected through the liquid groove 402.

[0027] To adjust the flow rate of the fluid, you only need to adjust the angle of the rotating body 401 so that the inlet channel 2 and the outlet channel 3 overlap with the liquid groove 402. Then, adjust the overlapping area of ​​one of the inlet channel 2 or the outlet channel 3 and the liquid groove 402. The larger the overlapping area, the greater the flow rate, thereby achieving precise control of the fluid flow rate.

[0028] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0029] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0030] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.

[0031] Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the broadest scope consistent with the principles and novel features disclosed herein. Those skilled in the art will understand that, based on the design philosophy of this application, the technical solutions described in the aforementioned embodiments may be adaptively modified, or some or all of the technical features therein may be replaced by equivalents. These modifications, equivalent replacements, and adaptively improved technical solutions do not depart from the technical essence of the present invention and should be encompassed within the scope of protection of this application.

Claims

1. A servo valve with a spare flow channel, comprising a valve body (1), an inlet flow channel (2) fixedly connected to one side of the valve body (1), an outlet flow channel (3) fixedly connected to the other side of the valve body (1), and a rotatable valve core (4) installed in the valve body (1), characterized in that: The outlet flow channel (3) is composed of a common flow channel (301) and a spare flow channel (302). The valve core (4) includes a rotating body (401) and a liquid passage groove (402) provided on one side of the rotating body (401). The rotating body (401) rotates within the valve body (1) to adjust the common flow channel (301) or the spare flow channel (302) to be connected to or closed with the inlet flow channel (2).

2. The servo valve with a backup flow channel according to claim 1, characterized in that: The valve body (1) and the rotating body (401) are configured as a sphere as a whole, and the liquid passage groove (402) is configured as a vertically opened arc.

3. The servo valve with a backup flow channel according to claim 2, characterized in that: Both ends of the arc-shaped liquid-passing groove (402) are provided with rounded corners on one side close to the central axis of the rotating body (401).

4. The servo valve with a backup flow channel according to claim 2, characterized in that: The top end of the rotating body (401) is fixedly connected to a transmission shaft (5), and the top end of the transmission shaft (5) is equipped with a power assembly (6) for controlling the rotation direction of the transmission shaft (5).

5. The servo valve with a backup flow channel according to claim 4, characterized in that: The power assembly (6) comprises a gear (601) connected to the top end of the transmission shaft (5), a rack (602) meshing with one side of the gear (601), a hydraulic rod (603) provided at one end of the rack (602), and a connecting rod (604) provided at the other end of the gear (601); the output end of the hydraulic rod (603) is fixedly connected to the end of the rack (602); the other end of the hydraulic rod (603) passes through the connecting rod (604) and is slidably connected to the connecting rod (604); the connecting rod (604), the hydraulic rod (603), the inlet channel (2), and the outlet channel (3) are fixedly connected to a housing (605); and the housing (605) is openable.

6. The servo valve with a backup flow channel according to claim 5, characterized in that: The transmission shaft (5) and the gear (601) are fixedly connected via a latch.

Images