High-strength balance shaft

Abstract

The utility model relates to the technical field of valves, in particular to a high-strength balance shaft, which not only disperses the weight of a counterweight ball, prevents tension from being concentrated in the middle of the balance shaft, prolongs the service life of the balance shaft, but also is convenient to drive the balance shaft to rotate reversely and reset automatically, is convenient to open a valve automatically after a fault occurs, and avoids hydrogen accumulation. A valve is included; the valve further comprises a balance shaft, a balance weight mechanism and two supporting mechanisms, the balance shaft is installed on the valve and conveniently drives the balance shaft to rotate reversely to open the valve after a fault occurs, the balance weight mechanism is installed on the valve and conveniently pulls the balance shaft to rotate forwards to close the valve, and the two supporting mechanisms are both installed on the balance shaft and drive the sealing cover to open and close.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of valve, in particular to a high strength balance axle. BACKGROUND

[0002] Balance axle is mainly used for offsetting the force generated when valve is operated frequently or under high pressure difference, so as to reduce operating torque, reduce wear and tear and improve control accuracy, and its core function is to balance the pressure on both sides of valve, so that opening and closing is more labor-saving.

[0003] The existing balance axle, for example, the automatic hydrogen discharge valve for wet dust removal system disclosed in the utility model patent with the application number 202421314556.3, its main structure includes valve body, the valve body is hollowly arranged, one end of the valve body is communicated with the top of the wet dust removal system pipeline and the other end is rotatably provided with a cover plate, the cover plate is used for closing the upper opening end of the valve body, a balance lever is rotatably arranged in the valve body, one end of the balance lever extends into the wet dust removal system pipeline and is provided with a counterweight ball; during use, the counterweight ball is offset by the airflow in the pipeline, drives the balance lever to rotate away from the opening position, and the cover plate is automatically closed on the valve body under the action of the internal and external pressure difference and its own gravity, after the wet dust removal system is shut down, the counterweight ball naturally falls under its own gravity, drives the balance lever to rotate to the opening position, so as to lift the cover plate and complete the automatic opening of the valve.

[0004] However, the existing balance axle mostly lacks autonomy, once the counterweight ball is stuck or falls off, it is easy to affect the opening of the valve, thereby causing safety hazards, and the balance axle is unevenly stressed, and the long-term fixed connection of the counterweight ball with the middle position of the balance axle is easy to cause the breakage of the balance axle. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a high-strength balance axle which not only disperses the weight of the counterweight ball, avoids the concentration of tension on the middle position of the balance axle, prolongs the service life of the balance axle, but also conveniently drives the balance axle to automatically reverse and reset, conveniently opens the valve after a fault occurs, and avoids the accumulation of hydrogen.

[0006] The utility model discloses a high-strength balance axle, including valve, still include balance axle, counterweight mechanism and two groups of support mechanism, balance axle is installed on the valve and is convenient for driving the balance axle to reverse and open the valve after a fault occurs, counterweight mechanism is installed on the valve and is convenient for pulling balance axle positive rotation, two groups of support mechanism are all installed on balance axle and drive sealing cover to open and close, counterweight mechanism is offset along with the airflow in the pipeline, so that the counterweight mechanism pulls balance axle positive rotation, balance axle drives two groups of support mechanism to close valve, when the airflow in the pipeline stops, the counterweight ball is stable under the action of gravity, balance axle reverses and resets, simultaneously opens the valve through two groups of support mechanism, and it is convenient to discharge hydrogen.

[0007] Preferably, the valve includes a valve body, a hinge, a sealing cover, and a sealing ring. The valve body is installed on the pipeline, the hinge is installed on the valve body, the sealing cover is installed on the hinge, and the sealing ring is installed on the valve body. When there is airflow in the pipeline, the two sets of support mechanisms pull the sealing cover down, and the sealing cover and the sealing ring cooperate to seal the valve body and prevent gas from escaping.

[0008] Preferably, the balance shaft includes a shaft body, a bushing, two sets of springs, and two sets of connecting rings. The shaft body is rotatably mounted on the valve body, the bushing is mounted on the valve body, both sets of springs are mounted on the valve body, and both sets of connecting rings are mounted on the shaft body and connected to the two sets of springs respectively. The bushing limits the movement of the shaft body. When there is no airflow in the pipeline, the counterweight mechanism resets, causing the shaft body to reverse and reset. At the same time, the two sets of springs rebound, causing the two sets of connecting rings to reverse and reset. The two sets of connecting rings then cause the shaft body to reset, thus preventing the counterweight mechanism from falling or getting stuck, which could cause the valve to be unable to open.

[0009] Preferably, the shaft body is made of 42CrMo alloy steel; after salt bath quenching, the hardness of 42CrMo alloy steel can reach HRC50-55, and the tensile strength is >1500MPa, which improves the strength of the shaft body and extends its service life.

[0010] Preferably, the counterweight mechanism includes a main hanger, two sets of auxiliary hangers, a connecting frame, a support rod, and a counterweight ball. The main hanger is mounted on the shaft, the two sets of auxiliary hangers are respectively mounted on two sets of connecting rings, the connecting frame is connected between the main hanger and the two sets of auxiliary hangers, the top end of the support rod is connected to the bottom end of the connecting frame, and the counterweight ball is mounted on the support rod. The airflow in the pipeline causes the counterweight ball to deflect, and the deflection of the counterweight ball causes the support rod and the connecting frame to rotate. The connecting frame drives the shaft to rotate clockwise through the main hanger and the two sets of auxiliary hangers to close the valve. By setting the main hanger and the two sets of auxiliary hangers to dissipate the tension of the counterweight ball, stress concentration is avoided.

[0011] Preferably, the support mechanism includes an arc-shaped bracket and a connecting seat. The arc-shaped bracket is mounted on the shaft, and the connecting seat is mounted on the sealing cover and rotatably connected to the top of the arc-shaped bracket. When the shaft rotates forward, it drives the two sets of support mechanisms to rotate. The two sets of arc-shaped brackets pull down to open the two sets of connecting seats and the sealing cover, which improves the connection between the shaft and the sealing cover. When the shaft rotates in reverse, the two sets of arc-shaped brackets push the two sets of connecting seats and the sealing cover upward to open.

[0012] Preferably, it also includes two sets of arc-shaped supports connected to the connecting frame; connecting the two sets of arc-shaped supports to the connecting frame can not only further disperse the tension of the counterweight ball, but also improve the overall stability of the device.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the counterweight mechanism shifts with the airflow in the pipeline, causing the counterweight mechanism to pull the balance shaft to rotate forward. The balance shaft drives the two sets of support mechanisms to close the valve. When the airflow in the pipeline stops, the counterweight ball stabilizes under its own weight, the balance shaft reverses and resets, and at the same time, the two sets of support mechanisms push the valve to open, facilitating the discharge of hydrogen. Attached Figure Description

[0014] Figure 1 This is a cross-sectional axonometric structural schematic diagram of this utility model;

[0015] Figure 2 This is an isometric structural schematic diagram of the valve of this utility model;

[0016] Figure 3 This is a cross-sectional axonometric structural diagram of the balance shaft of this utility model;

[0017] Figure 4 This is a partially enlarged cross-sectional isometric structural schematic diagram of the counterweight mechanism of this utility model;

[0018] Figure 5 This is a partially enlarged cross-sectional isometric structural schematic diagram of the support mechanism of this utility model.

[0019] The following labels are used in the attached diagram: 01, valve; 11, valve body; 12, hinge; 13, sealing cover; 14, sealing ring; 02, balance shaft; 21, shaft body; 22, bushing; 23, spring; 24, connecting ring; 03, counterweight mechanism; 31, main hanger; 32, auxiliary hanger; 33, connecting frame; 34, support rod; 35, counterweight ball; 04, support mechanism; 41, arc-shaped bracket; 42, connecting seat. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example

[0021] This utility model discloses a high-strength balance shaft, including a valve 01; it also includes a balance shaft 02, a counterweight mechanism 03, and two sets of support mechanisms 04. The balance shaft 02 is mounted on the valve 01 and facilitates reversing the balance shaft to open the valve in case of a malfunction. The counterweight mechanism 03 is mounted on the valve 01 and facilitates pulling the balance shaft forward to close the valve. Both sets of support mechanisms 04 are mounted on the balance shaft 02 and drive the opening and closing of the sealing cover. The valve 01 includes a valve body 11, a hinge 12, a sealing cover 13, and a sealing ring 14. The valve body 11 is mounted on a pipeline, and the hinge 12 is mounted on the valve body 11. The sealing cover 13 is mounted on the hinge 12, and the sealing ring 14 is mounted on the valve body 11. The balance shaft 02 includes a shaft body 21, a bushing 22, two sets of springs 23, and two sets of connecting rings 24. The shaft body 21 is rotatably mounted on the valve body 11, the bushing 22 is mounted on the valve body 11, both sets of springs 23 are mounted on the valve body 11, and both sets of connecting rings 24 are mounted on the shaft body 21 and connected to the two sets of springs 23 respectively. The shaft body 21 is made of alloy steel 42CrMo. The counterweight mechanism 03 includes a main hanger 31, two sets of auxiliary hangers 32, a connecting frame 33, and a support rod. The main hanger 31 is mounted on the shaft 21, and two sets of auxiliary hangers 32 are respectively mounted on two sets of connecting rings 24. The connecting frame 33 is connected between the main hanger 31 and the two sets of auxiliary hangers 32. The top end of the support rod 34 is connected to the bottom end of the connecting frame 33, and the counterweight ball 35 is mounted on the support rod 34. During operation, the airflow in the pipeline first causes the counterweight ball 35 to deflect, which in turn causes the support rod 34 and the connecting frame 33 to rotate. The connecting frame 33 then drives the shaft 21 to rotate clockwise through the main hanger 31 and the two sets of auxiliary hangers 32. The main hanger 31 and the two sets of auxiliary hangers 32 provide heat dissipation and counterweight ball 35 tension to avoid stress concentration. The two sets of support mechanisms 04 pull the sealing cover 13 down. The sealing cover 13 and the sealing ring 14 cooperate to seal the valve body 11 to prevent gas leakage. The bushing 22 limits the shaft 21. When there is no airflow in the pipeline, the counterweight ball 35 resets and drives the shaft 21 to reverse and reset. At the same time, the two sets of springs 23 rebound and drive the two sets of connecting rings 24 to reverse. The two sets of connecting rings 24 drive the shaft 21 to reset, preventing the counterweight ball 35 from falling or getting stuck, which could cause the valve to be unable to open. Example

[0022] like Figures 1 to 5As shown, this utility model discloses a high-strength balance shaft based on embodiment 1. The support mechanism 04 includes an arc-shaped bracket 41 and a connecting seat 42. The arc-shaped bracket 41 is mounted on the shaft body 21, and the connecting seat 42 is mounted on the sealing cover 13 and rotatably connected to the top of the arc-shaped bracket 41. It also includes two sets of arc-shaped brackets 41 connected to the connecting frame 33. During operation, firstly, the airflow in the pipe causes the counterweight ball 35 to shift, and the shift of the counterweight ball 35 causes the support rod 34 and the connecting frame 33 to rotate. The connecting frame 33 drives the shaft body 21 to rotate clockwise through the main hanger 31 and two sets of auxiliary hangers 32. By setting the main hanger 31 and two sets of auxiliary hangers 32 to dissipate the tension of the counterweight ball 35, stress concentration is avoided. The shaft 21 drives the two sets of arc-shaped supports 41 to rotate. The two sets of arc-shaped supports 41 pull down the two sets of connecting seats 42 and sealing cover 13 to open, which improves the connection between the shaft 21 and sealing cover 13. The sealing cover 13 and sealing ring 14 cooperate to seal the valve body 11 to prevent gas leakage. The bushing 22 limits the shaft 21. When there is no airflow in the pipeline, the counterweight ball 35 resets and drives the shaft 21 to reverse and reset. At the same time, the two sets of springs 23 rebound and drive the two sets of connecting rings 24 to reverse. The two sets of connecting rings 24 drive the shaft 21 to reset. The two sets of arc-shaped supports 41 push the two sets of connecting seats 42 and sealing cover 13 upward to open, so as to prevent the counterweight ball 35 from falling or getting stuck and causing the valve to be unable to open.

[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-strength balance shaft, comprising a valve (01); characterized in that, It also includes a balance shaft (02), a counterweight mechanism (03), and two sets of support mechanisms (04). The balance shaft (02) is installed on the valve (01) and facilitates the opening of the valve by reversing the balance shaft after a failure. The counterweight mechanism (03) is installed on the valve (01) and facilitates the closing of the valve by pulling the balance shaft forward. Both sets of support mechanisms (04) are installed on the balance shaft (02) and drive the sealing cover to open and close.

2. The high-strength balance shaft as described in claim 1, characterized in that, The valve (01) includes a valve body (11), a hinge (12), a sealing cap (13), and a sealing ring (14). The valve body (11) is installed on the pipeline, the hinge (12) is installed on the valve body (11), the sealing cap (13) is installed on the hinge (12), and the sealing ring (14) is installed on the valve body (11).

3. A high-strength balance shaft as described in claim 2, characterized in that, The balance shaft (02) includes a shaft body (21), a bushing (22), two sets of springs (23) and two sets of connecting rings (24). The shaft body (21) is rotatably mounted on the valve body (11), the bushing (22) is mounted on the valve body (11), both sets of springs (23) are mounted on the valve body (11), and both sets of connecting rings (24) are mounted on the shaft body (21) and connected to the two sets of springs (23) respectively.

4. A high-strength balance shaft as described in claim 3, characterized in that, It also includes the shaft (21) which is made of alloy steel 42CrMo.

5. A high-strength balance shaft as described in claim 3, characterized in that, The counterweight mechanism (03) includes a main hanger (31), two sets of auxiliary hangers (32), a connecting frame (33), a support rod (34), and a counterweight ball (35). The main hanger (31) is mounted on the shaft (21), the two sets of auxiliary hangers (32) are respectively mounted on two sets of connecting rings (24), the connecting frame (33) is connected between the main hanger (31) and the two sets of auxiliary hangers (32), the top end of the support rod (34) is connected to the bottom end of the connecting frame (33), and the counterweight ball (35) is mounted on the support rod (34).

6. A high-strength balance shaft as described in claim 3, characterized in that, The support mechanism (04) includes an arc-shaped bracket (41) and a connecting seat (42). The arc-shaped bracket (41) is mounted on the shaft (21), and the connecting seat (42) is mounted on the sealing cover (13) and rotatably connected to the top of the arc-shaped bracket (41).

7. A high-strength balance shaft as described in claim 6, characterized in that, It also includes two sets of arc-shaped brackets (41) connected to the connecting frame (33).

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