Sealing design mechanism

Abstract

The utility model discloses a sealing design mechanism which comprises a valve seat assembly, a valve plate, a connecting block, a shaft and a tension spring. According to the sealing design mechanism, a valve plate is arranged above a valve seat assembly, a connecting block is arranged above the valve plate, a shaft is installed on the inner side of the connecting block, one side of the connecting block and the valve plate are assembled, a tension spring is arranged between the other side of the connecting block and the valve plate, and a movable kidney-shaped hole is formed in the side, where the connecting block and the valve plate are installed, of the connecting block; a connecting column is fixedly connected to the position, corresponding to the movable kidney-shaped hole, of the valve plate, the connecting column is inserted into the movable kidney-shaped hole and can swing, the connecting column and the connecting block are jointly provided with a pin hole, a pin piece penetrates through the pin hole, the rubber sealing ring is designed to be L-shaped, the valve plate is made to be round, combined sealing is achieved, a double-eccentric structure is adopted, and in the opening process of the valve plate, the valve plate is not prone to falling off. The valve plate is lifted linearly and then rotates along with the main shaft, the sealing requirement of a new energy customer is met, friction between the valve plate and the sealing ring is reduced, and therefore the failure rate is reduced.

Description

Technical Field

[0001] This utility model relates to the field of air circuit control valve technology for hydrogen energy fuel cell stacks, specifically a sealing design mechanism. Background Technology

[0002] Throttle valve working principle: When energized, the drive control component controls the motor to rotate, which drives the transmission system and causes the valve plate to flip, opening the valve; when de-energized, the valve plate flips under the force of the torsion spring, closing the valve.

[0003] The existing design uses rubber ring sealing, and the valve plate flipping adopts a double eccentric structure, which solves the problems of high part machining precision, poor sealing performance, and easy valve plate jamming; the valve plate and shaft are connected by screws, which reduces the requirements for machining and assembly precision and meets the mass production requirements of the automotive industry.

[0004] When the operation begins, the throttle receives a signal from the ECU to control the motor to rotate, which drives the gear set to drive the valve plate to open and close, thus controlling the gas flow.

[0005] When the throttle is closed, the motor rotates, driving the gear set to close the valve plate, which then tightly seals against the rubber sealing ring, achieving a sealing effect.

[0006] The existing throttle valve uses a valve plate and is installed eccentrically.

[0007] 1) The seal is not tight and cannot meet the sealing requirements of new energy customers;

[0008] 2) The rubber is severely worn, resulting in a high failure rate.

[0009] Therefore, a new sealing design mechanism is proposed to optimize the existing throttle valve. Utility Model Content

[0010] The purpose of this invention is to provide a sealing design mechanism to solve the problems mentioned in the background art.

[0011] To achieve the above objectives, this utility model provides the following technical solution:

[0012] A sealing design mechanism includes a valve seat assembly, a valve plate is provided above the valve seat assembly, a connecting block is provided above the valve plate, a shaft is installed on the inner side of the connecting block, one side of the connecting block is assembled with the valve plate, and a tension spring is provided between the other side of the connecting block and the valve plate.

[0013] As a further embodiment of this utility model: the valve seat assembly includes a sealing seat, a sealing ring is installed on the inner side of the sealing seat, the sealing ring corresponds to and is adapted to the valve plate, and a limiting protrusion is provided on the edge of the sealing ring, which corresponds to the edge of the valve plate.

[0014] As a further improvement of this utility model: a movable waist hole is provided on the side where the connecting block is installed with the valve plate, and a connecting column is fixedly connected to the valve plate at the corresponding movable waist hole. The connecting column is inserted into the movable waist hole and can swing.

[0015] As a further embodiment of this utility model: the connecting column and the connecting block are both provided with a pin hole, and a pin is inserted through the pin hole. The connecting column is rotatably connected to the movable waist hole through the pin.

[0016] As a further embodiment of this utility model: the connecting block has a mounting hole corresponding to the shaft, and a mounting groove is provided on the shaft corresponding to the connecting block. The connecting block is adapted to the mounting groove. A threaded hole is provided on the shaft corresponding to the mounting hole. A fixing bolt adapted to it is provided in both the threaded hole and the mounting hole. The fixing bolt passes through the threaded hole of the mounting hole.

[0017] As a further embodiment of this utility model: both the connecting block and the valve plate are fixedly connected with positioning bosses for tension spring connection. The positioning bosses are provided with locking holes, and the tension springs are sleeved on the outside of the positioning bosses with their two ends of spiral threads inserted into the locking holes.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This utility model uses an L-shaped rubber sealing ring and a circular valve plate for combined sealing. It adopts a double eccentric structure. During the opening process, the valve plate is first lifted in a straight line and then rotates with the main shaft. While meeting the sealing requirements of new energy customers, it reduces the friction between the valve plate and the sealing ring, thereby reducing the failure rate. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of a sealing design mechanism.

[0021] Figure 2 This is a schematic diagram of a sealed design mechanism that rotates 20 degrees.

[0022] Figure 3 This is a schematic diagram of a sealing design mechanism that rotates 110 degrees.

[0023] Figure 4 This is a diagram illustrating a valve seat assembly in a sealing design mechanism.

[0024] Figure 5 This is a diagram illustrating a valve plate with a sealing design mechanism.

[0025] Figure 6 This is a diagram illustrating a connecting block in a sealing design mechanism.

[0026] Figure 7 This is a diagram illustrating the central shaft of a sealing design mechanism.

[0027] In the diagram: 1. Valve seat assembly; 2. Valve plate; 3. Connecting block; 4. Shaft; 5. Tension spring; 6. Sealing seat; 7. Sealing ring; 8. Movable waist hole; 9. Connecting column; 10. Pin hole; 11. Pin; 12. Mounting hole; 13. Mounting groove; 14. Limiting protrusion; 15. Threaded hole; 16. Fixing bolt; 17. Positioning boss; 18. Locking hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-7 In this embodiment of the utility model, a sealing design mechanism includes a valve seat assembly 1, a valve plate 2 is provided above the valve seat assembly 1, a connecting block 3 is provided above the valve plate 2, a shaft 4 is installed on the inner side of the connecting block 3, one side of the connecting block 3 is assembled with the valve plate 2, and a tension spring 5 is provided between the other side of the connecting block 3 and the valve plate 2.

[0030] The valve seat assembly 1 includes a sealing seat 6, and a sealing ring 7 is installed on the inner side of the sealing seat 6. The sealing ring 7 corresponds to and is adapted to the valve plate 2. The edge of the sealing ring 7 is provided with a limiting protrusion 14, which corresponds to the edge of the valve plate 2. The limiting protrusion 14 plays a certain edge limiting role, preventing the valve plate 2 from being driven by the tension spring 5 to rotate at a large angle when the valve plate 2 is rotated and falls.

[0031] A movable waist hole 8 is provided on the side where the connecting block 3 is installed with the valve plate 2. A connecting post 9 is fixedly connected to the valve plate 2 at the corresponding movable waist hole 8. The connecting post 9 is inserted into the movable waist hole 8 and can swing.

[0032] The connecting column 9 and the connecting block 3 are both provided with a pin hole 10, and a pin 11 is inserted into the pin hole 10. The connecting column 9 is rotatably connected to the movable waist hole 8 through the pin 11.

[0033] The connecting block 3 has a mounting hole 12 corresponding to the shaft 4. The shaft 4 has a mounting groove 13 corresponding to the connecting block 3. The connecting block 3 is adapted to the mounting groove 13. The shaft 4 has a threaded hole 15 corresponding to the mounting hole 12. The threaded hole 15 and the mounting hole 12 are both provided with a fixing bolt 16 adapted to them. The fixing bolt 16 passes through the threaded hole 15 of the mounting hole 12 and is threadedly connected.

[0034] Both the connecting block 3 and the valve plate 2 are fixedly connected with positioning bosses 17 for connecting the tension spring 5. The positioning bosses 17 are provided with locking holes 18. The tension spring 5 is sleeved on the outside of the positioning bosses 17 and its two ends of spiral threads are inserted into the locking holes 18.

[0035] The working principle of this utility model is as follows:

[0036] When operation begins, the throttle receives a signal from the ECU to control the motor to rotate, which in turn drives the gear set to rotate. The rotation of shaft 4 causes valve plate 2 to open, controlling the gas flow. First, when shaft 4 rotates from 0 degrees to 20 degrees, connecting block 3 is rotated, forming the first eccentric rotation. At the same time, tension spring 5 pulls valve plate 2 to deflect relative to shaft 4, forming a synchronous avoidance until connecting post 9 abuts against the edge of movable waist hole 8, forming a limit. Thus, valve plate 2 is lifted vertically upward by 2.5mm. When shaft 4 rotates from 20 degrees to 110 degrees, the second eccentric rotation is formed, and valve plate 2 rotates 90 degrees with shaft 4, opening fully.

[0037] When the throttle is closed, the motor rotates and drives the gear set to drive the shaft 4 to first rotate the valve plate 2 90 degrees in the opposite direction to reach the horizontal position, and then rotates it 20 degrees. The valve plate 2 falls vertically and closes tightly with the rubber sealing ring to achieve a sealing effect.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sealing design mechanism, comprising a valve seat assembly (1), characterized in that: A valve plate (2) is provided above the valve seat assembly (1), and a connecting block (3) is provided above the valve plate (2). A shaft (4) is installed on the inner side of the connecting block (3). One side of the connecting block (3) is assembled with the valve plate (2), and a tension spring (5) is provided between the other side of the connecting block (3) and the valve plate (2).

2. The sealing design mechanism according to claim 1, characterized in that: The valve seat assembly (1) includes a sealing seat (6), and a sealing ring (7) is installed on the inner side of the sealing seat (6). The sealing ring (7) corresponds to and is adapted to the valve plate (2). The edge of the sealing ring (7) is provided with a limiting protrusion (14), which corresponds to the edge of the valve plate (2).

3. The sealing design mechanism according to claim 1, characterized in that: The connecting block (3) is provided with a movable waist hole (8) on one side where it is installed with the valve plate (2). A connecting column (9) is fixedly connected to the valve plate (2) at the location corresponding to the movable waist hole (8). The connecting column (9) is inserted into the movable waist hole (8) and can swing.

4. The sealing design mechanism according to claim 3, characterized in that: The connecting column (9) and the connecting block (3) are provided with a pin hole (10), and a pin (11) is inserted in the pin hole (10). The connecting column (9) is rotatably connected to the movable waist hole (8) through the pin (11).

5. The sealing design mechanism according to claim 1, characterized in that: The connecting block (3) has a mounting hole (12) corresponding to the shaft (4), and a mounting groove (13) is provided on the shaft (4) corresponding to the connecting block (3). The connecting block (3) and the mounting groove (13) are adapted to each other. The shaft (4) has a threaded hole (15) corresponding to the mounting hole (12). The threaded hole (15) and the mounting hole (12) are both provided with a fixing bolt (16) that is adapted to them. The fixing bolt (16) passes through the threaded hole (15) that is threaded to the mounting hole (12).

6. A sealing design mechanism according to claim 1, characterized in that: Both the connecting block (3) and the valve plate (2) are fixedly connected with positioning bosses (17) for connecting the tension spring (5). The positioning bosses (17) are provided with locking holes (18). The tension spring (5) is sleeved on the outside of the positioning bosses (17) and its two ends of spiral wire are inserted into the locking holes (18).

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