Compression-resistant valve element for aircraft servo system

Abstract

The utility model discloses a pressure-resistant valve core for an airplane servo system, and relates to the technical field of valve cores. The inner wall of the filter ring is fixedly connected with the outer wall of the valve shell; the outer wall of the adjusting mechanism is fixedly connected with the inner wall of the valve shell; the inner wall of the cut-off mechanism is fixedly connected with the outer wall of the valve shell; the regulating mechanism comprises a sliding barrel, the regulating mechanism is arranged, a screw rod on the sliding barrel is rotated, the flow control device in threaded connection is driven to move, the blocking block moves in the sliding barrel, the circulation groove corresponds to the groove opening in the valve shell, and therefore the flowing speed of fluid is regulated. Compared with a rotary valve clack, the push type valve clack can better resist the impact of fluid, impurities in the fluid are blocked through the external filter ring, the impurities can be prevented from entering the valve shell, and the impact of the fluid is relieved through blocking of the filter ring.

Description

Technical Field

[0001] The utility model relates to the technical field of valve cores, in particular to a pressure-resistant valve core for an aircraft servo system. Background Art

[0002] The servo system, also known as the follow-up system, is a feedback control system used to accurately follow or reproduce a process. The servo system is an automatic control system that enables the output controlled quantities such as the position, orientation, and state of an object to follow any changes in the input target. Its main task is to amplify, transform, and regulate the power according to the requirements of the control command, so that the torque, speed, and position control of the drive device output are very flexible and convenient.

[0003] However, in the prior art, the servo system needs to be controlled by a valve on the aircraft, but the existing valve core controls the opening of the valve and the flow rate of the fluid through a rotating structure. When the fluid is just opened and closed, the impact force of the fluid is large, which can easily cause damage to the valve core. In addition, when the fluid pressure is high or in an emergency, the valve core needs to be closed slowly and cannot be blocked quickly. Utility Model Content

[0004] In view of the deficiencies in the prior art, the technical solution adopted by the utility model to solve the technical problems is: a pressure-resistant valve core for an aircraft servo system, comprising: a valve housing; a filter ring, the inner wall of the filter ring is fixedly connected to the outer wall of the valve housing; an adjusting mechanism, the outer wall of the adjusting mechanism is fixedly connected to the inner wall of the valve housing; a cutting mechanism, the inner wall of the cutting mechanism is fixedly connected to the outer wall of the valve housing; the adjusting mechanism comprises a sliding cylinder, the bottom end of the sliding cylinder is fixedly connected to a push spring, the top end of the sliding cylinder is fixedly connected to a block, the inner wall of the sliding cylinder is rotatably connected to a screw; the outer wall of the screw is rotatably connected to a limiting disk, the bottom end of the limiting disk is fixedly connected to a limiting rod, and a flow control device is arranged inside the sliding cylinder.

[0005] Preferably, the outer wall of the sliding cylinder is slidably connected to the inner wall of the valve housing, the end of the push spring away from the sliding cylinder is fixedly connected to the inner wall of the valve housing, and the bottom end of the limit rod is fixedly connected to the top end of the valve housing. Under the push of the push spring, the sliding cylinder slides upward in the valve housing until it is blocked by the limit plate connected to the limit rod, and the notch of the valve housing is blocked by the outer wall of the sliding cylinder, so that the fluid cannot pass through, completing the emergency blocking.

[0006] Preferably, the flow control device comprises a block, and the inner wall of the block is provided with a flow groove. The outer wall of the block is slidably connected to the inner wall of the sliding cylinder, and the inner wall of the block is threadedly connected to the outer wall of the screw. The screw on the sliding cylinder is rotated to drive the threaded flow control device to move, so that the block connected with the thread moves in the sliding cylinder, so that the flow groove on the block corresponds to the notch on the valve housing, so that the fluid can pass through the valve housing through the flow groove, thereby adjusting the flow speed of the fluid.

[0007] Preferably, the cutting mechanism comprises a fixing ring, the top of which is fixedly connected to a torsion spring, the top of which is fixedly connected to an adjusting ring, and the inner wall of which is fixedly connected to a limit block. The adjusting ring is rotated to drive the limit block to rotate until the limit block no longer suppresses the clamping block, and at this time, the sliding cylinder slides upward in the valve housing under the push of the pushing spring.

[0008] Preferably, the inner wall of the fixed ring is fixedly connected to the inner wall of the valve housing, the outer wall of the adjusting ring is rotatably connected to the outer wall of the valve housing, and the outer wall of the limit block is slidably connected to the outer wall of the clamping block. Under the action of the torsion spring on the fixed ring, the adjusting ring is rotated and reset until it is blocked and restricted by the limit rod, so that the limit block restricts the clamping block again, so that the sliding cylinder cannot move.

[0009] The beneficial effects of the utility model are as follows:

[0010] 1. The utility model sets an adjustment mechanism, rotates the screw on the sliding cylinder, drives the threaded flow control device to move, and moves the block in the sliding cylinder, so that the flow groove and the notch on the valve housing correspond to each other, thereby adjusting the flow speed of the fluid. The push-type valve flap can better resist the impact of the fluid than the rotating valve flap, and blocks the impurities in the fluid through the external filter ring, which can prevent the impurities from entering the valve housing and reduce the impact of the fluid through the blocking of the filter ring.

[0011] 2. The utility model sets a cutting mechanism and rotates the adjusting ring to drive the limit block to rotate until the limit block no longer suppresses the blocking block. At this time, under the push of the push spring, the sliding cylinder slides upward in the valve housing until it is blocked by the limit disk connected to the limit rod. The notch of the valve housing is blocked by the outer wall of the sliding cylinder, so that the fluid cannot be blocked, thereby completing emergency blocking. The overall structure is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the adjustment mechanism of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the flow control device of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the cutting mechanism of the utility model.

[0016] In the figure: 1. valve housing; 2. filter ring; 3. cutting mechanism; 301. fixing ring; 302. torsion spring; 303. adjusting ring; 304. limit block; 4. adjusting mechanism; 401. sliding cylinder; 402. pushing spring; 403. screw; 404. limit rod; 405. limit disk; 406. block; 5. flow control device; 501. blocking block; 502. flow slot. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0018] Example:

[0019] See also Figure 1 - Figure 4 The utility model provides a technical solution: a pressure-resistant valve core for an aircraft servo system, comprising: a valve housing 1; a filter ring 2, the inner wall of the filter ring 2 is fixedly connected to the outer wall of the valve housing 1; an adjusting mechanism 4, the outer wall of the adjusting mechanism 4 is fixedly connected to the inner wall of the valve housing 1; a cutting mechanism 3, the inner wall of the cutting mechanism 3 is fixedly connected to the outer wall of the valve housing 1; the adjusting mechanism 4 comprises a sliding cylinder 401, the bottom end of the sliding cylinder 401 is fixedly connected to a push spring 402, the top end of the sliding cylinder 401 is fixedly connected to a block 406, the inner wall of the sliding cylinder 401 is rotatably connected to a screw 403; the outer wall of the screw 403 is rotatably connected to a limiting disk 405, the bottom end of the limiting disk 405 is fixedly connected to a limiting rod 404, and a flow control device 5 is arranged inside the sliding cylinder 401.

[0020] The outer wall of the sliding cylinder 401 is slidably connected to the inner wall of the valve housing 1, the end of the push spring 402 away from the sliding cylinder 401 is fixedly connected to the inner wall of the valve housing 1, and the bottom end of the limit rod 404 is fixedly connected to the top of the valve housing 1. Under the push of the push spring 402, the fixedly connected sliding cylinder 401 is pushed to slide upward on the inner wall of the valve housing 1 until it is blocked by the limit plate 405 fixedly connected to the limit rod 404, and the notch of the valve housing 1 is blocked by the outer wall of the sliding cylinder 401, so that the fluid cannot pass through, and the emergency blocking is completed.

[0021] The flow control device 5 includes a block 501, and a flow groove 502 is provided on the inner wall of the block 501. The outer wall of the block 501 is slidably connected to the inner wall of the sliding cylinder 401, and the inner wall of the block 501 is threadedly connected to the outer wall of the screw 403. The screw 403 rotatably connected to the sliding cylinder 401 is rotated to drive the threaded flow control device 5 to move, so that the block 501 connected to the thread moves on the inner wall of the sliding cylinder 401, so that the flow groove 502 provided on the block 501 corresponds to the notch on the valve housing 1, so that the fluid can pass through the valve housing 1 through the flow groove 502, thereby adjusting the flow speed of the fluid.

[0022] The cutting mechanism 3 includes a fixing ring 301, a torsion spring 302 is fixedly connected to the top of the fixing ring 301, an adjusting ring 303 is fixedly connected to the top of the torsion spring 302, and a limit block 304 is fixedly connected to the inner wall of the adjusting ring 303. The adjusting ring 303 is rotated to drive the fixed limit block 304 to rotate until the limit block 304 no longer suppresses the block 406. At this time, the sliding cylinder 401 slides upward on the inner wall of the valve housing 1 under the push of the push spring 402.

[0023] The inner wall of the fixed ring 301 is fixedly connected to the inner wall of the valve housing 1, the outer wall of the adjusting ring 303 is rotatably connected to the outer wall of the valve housing 1, and the outer wall of the limit block 304 is slidably connected to the outer wall of the clamping block 406. Under the action of the torsion spring 302 fixedly connected to the fixed ring 301, the adjusting ring 303 is rotated and reset until it is blocked and restricted by the limit rod 404, so that the limit block 304 restricts the clamping block 406 again, so that the sliding cylinder 401 cannot move.

[0024] Working principle:

[0025] When in use, the whole device is installed in the valve of the aircraft servo system. When the fluid needs to pass through, the screw 403 on the sliding cylinder 401 is rotated through the adjusting mechanism 4, driving the threaded flow control device 5 to move, so that the blocking block 501 connected with the thread moves in the sliding cylinder 401, so that the flow groove 502 on the blocking block 501 corresponds to the notch on the valve housing 1, so that the fluid can pass through the valve housing 1 through the flow groove 502, thereby adjusting the flow speed of the fluid. When the fluid passes through the valve housing 1, the impurities in the fluid are blocked by the external filter ring 2 to prevent the impurities from entering the valve housing 1, and the impact of the fluid is slowed down by the blocking of the filter ring 2;

[0026] When emergency blocking is required, the adjusting ring 303 is rotated through the cutting mechanism 3 to drive the limit block 304 to rotate until the limit block 304 no longer suppresses the block 406. At this time, under the push of the push spring 402, the sliding cylinder 401 slides upward in the valve housing 1 until it is blocked by the limit plate 405 connected to the limit rod 404, and the notch of the valve housing 1 is blocked through the outer wall of the sliding cylinder 401, so that the fluid cannot pass through, completing the emergency blocking. When the pressure is normal, the sliding cylinder 401 is pressed downward until its top passes through the adjusting ring 303. Under the action of the torsion spring 302 on the fixing ring 301, the adjusting ring 303 is rotated and reset until it is blocked and restricted by the limit rod 404, so that the limit block 304 restricts the block 406 again, so that the sliding cylinder 401 cannot move.

[0027] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A pressure-resistant valve core for an aircraft servo system, characterized in that: include: Valve housing (1); A filter ring (2), the inner wall of the filter ring (2) being fixedly connected to the outer wall of the valve housing (1); An adjusting mechanism (4), wherein an outer wall of the adjusting mechanism (4) is fixedly connected to an inner wall of the valve housing (1); A cut-off mechanism (3), wherein the inner wall of the cut-off mechanism (3) is fixedly connected to the outer wall of the valve housing (1); The regulating mechanism (4) comprises a sliding cylinder (401), the bottom end of the sliding cylinder (401) is fixedly connected to a push spring (402), the top end of the sliding cylinder (401) is fixedly connected to a clamping block (406), the inner wall of the sliding cylinder (401) is rotatably connected to a screw rod (403); the outer wall of the screw rod (403) is rotatably connected to a limiting plate (405), the bottom end of the limiting plate (405) is fixedly connected to a limiting rod (404), and a flow control device (5) is arranged inside the sliding cylinder (401).

2. The pressure-resistant valve core for an aircraft servo system according to claim 1, characterized in that: The outer wall of the sliding cylinder (401) is slidably connected to the inner wall of the valve housing (1), the end of the push spring (402) away from the sliding cylinder (401) is fixedly connected to the inner wall of the valve housing (1), and the bottom end of the limit rod (404) is fixedly connected to the top end of the valve housing (1).

3. The pressure-resistant valve core for an aircraft servo system according to claim 1, characterized in that: The flow control device (5) comprises a blocking block (501), and a flow groove (502) is formed on the inner wall of the blocking block (501).

4. The pressure-resistant valve core for an aircraft servo system according to claim 3, characterized in that: The outer wall of the blocking block (501) is slidably connected to the inner wall of the sliding cylinder (401), and the inner wall of the blocking block (501) is threadedly connected to the outer wall of the screw rod (403).

5. The pressure-resistant valve core for an aircraft servo system according to claim 1, characterized in that: The cutting mechanism (3) comprises a fixing ring (301), the top end of the fixing ring (301) is fixedly connected to a torsion spring (302), the top end of the torsion spring (302) is fixedly connected to an adjusting ring (303), and the inner wall of the adjusting ring (303) is fixedly connected to a limiting block (304).

6. The pressure-resistant valve core for an aircraft servo system according to claim 5, characterized in that: The inner wall of the fixing ring (301) is fixedly connected to the inner wall of the valve housing (1), the outer wall of the adjusting ring (303) is rotatably connected to the outer wall of the valve housing (1), and the outer wall of the limiting block (304) is slidably connected to the outer wall of the clamping block (406).

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