Mechanical drum type filter screen transmission shaft brake device

Abstract

The utility model belongs to the technical field of filtering devices, and particularly relates to a mechanical drum type filter screen transmission shaft brake device. Comprising a base, a connecting plate, a manual ratchet wheel, a supporting arm, a left brake force arm, a right brake force arm and a cross arm. The manual ratchet wheel is fixed on a connecting arm, the upper end of the connecting arm is rotatably fixed on the connecting plate, and the lower end of the connecting arm is rotatably fixed on the base; the upper end of the supporting arm is rotatably fixed on the connecting plate, and the lower end of the supporting arm is inserted into a supporting sleeve; the left brake force arm and the right brake force arm are oppositely arranged, triangular plates are arranged on the two brake force arms respectively, the outer side faces of the triangular plates are designed to be cambered surfaces, brake pads are arranged on the cambered surfaces, and the two cambered surfaces of the two triangular plates are used for supporting and tightly holding a transmission shaft; a shaft sleeve is arranged on the transmission shaft; wherein the upper end of the left brake force arm is rotatably fixed on the connecting plate, and the lower end is rotatably fixed on the base; one end of the cross arm is rotatably fixed on the connecting plate, the other end of the cross arm is rotatably connected with the upper end of the right brake force arm, and the lower end of the right brake force arm is rotatably fixed on the base.

Description

Technical Field

[0001] The utility model belongs to the technical field of filtering devices, and in particular relates to a mechanical drum-type filter transmission shaft brake device. Background Art

[0002] The main function of the cooling water filtration system is to filter seawater for the main cooling circulating water system and important plant water systems of nuclear power plants. The drum filter is the core equipment of the nuclear power plant cooling water filtration system, which is used to intercept suspended dirt in seawater that is larger than the mesh diameter to ensure the normal operation of subsequent water pumps and heat transfer equipment. The transmission mode of the drum filter equipment is gear transmission. The motor reducer in the drive device drives the small gear at the end of the drive shaft to drive the large gear ring on the drum frame for transmission, and the precision requirement is high. At the same time, since the working environment of the drum filter is a salt spray environment with a high chloride ion content, and the drum filter equipment is composed of a variety of materials, it is prone to electrochemical corrosion. Therefore, in order to ensure the long-term and stable operation of the equipment, the drum filter equipment needs to be shut down for maintenance after each period of work (fuel cycle), and the parts that are more severely corroded need to be replaced. Because there is no dedicated braking equipment, the drum filter brake method is to slow down by the friction between the sealing rubber at the sealing device and the basic sealing plate after the drum filter motor stops working. During the maintenance period, the drum filter is also kept stationary by this friction. Therefore, there are the following hidden dangers: After the motor stops, due to the inertial rotation of the drum filter, the deceleration effect is not obvious and the shutdown time is long. During the maintenance period, the absolute parking of the equipment cannot be guaranteed, and the safety of the maintenance personnel is difficult to guarantee. During the turning inspection, there may be incomplete notification problems, which poses a safety hazard. Therefore, it is necessary to develop a drum filter drive shaft brake device so that the drum filter is in a braking state during maintenance, and the state switching between parking maintenance and turning inspection can be realized. Utility Model Content

[0003] In order to solve one of the above problems, the utility model provides a mechanical drum filter transmission shaft brake device, including a base, a connecting plate, a manual ratchet, a support arm and left and right brake force arms and a cross arm;

[0004] A manual ratchet is fixed to a connecting arm, the upper end of which is rotatably fixed to the connecting plate, and the lower end of which is rotatably fixed to the base;

[0005] The support arm is located at the side of the connecting arm, the upper end of which can be rotatably fixed on the connecting plate, and the lower end of which is inserted into a support sleeve;

[0006] The left and right brake lever arms are arranged opposite to each other, and a triangular plate is arranged on each of them. The outer side surface of the triangular plate is designed as an arc surface, and a brake pad is arranged on the arc surface. The two arc surfaces of the two triangular plates are used to support and hold the transmission shaft; a shaft sleeve is arranged on the transmission shaft; the upper end of the left brake lever arm can be rotatably fixed on the connecting plate, and the lower end can be rotatably fixed on the base;

[0007] One end of the horizontal arm is rotatably fixed on the connecting plate, and the other end is rotatably connected to the upper end of the right brake lever arm. The lower end of the right brake lever arm is rotatably fixed on the base.

[0008] Furthermore, the base is fixed to the ground via expansion bolts.

[0009] Furthermore, a support spring is arranged at the bottom of the support sleeve.

[0010] The utility model is a hydraulic brake device used on the transmission shaft of the drum filter, which can quickly stop the rotation of the drum filter. It can realize braking and stopping during the idling process of the drum filter after the motor stops running in the preparation stage of the drum filter maintenance. During the maintenance process of the drum filter, braking or disengagement can be realized according to the maintenance needs, and the parking maintenance and turning inspection state can be realized. At the same time, it has the advantages of not affecting the transmission shaft structure, simple operation, compact device, convenient installation and disassembly, and convenient daily maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a side view structural schematic diagram of the utility model;

[0013] Figure 3 It is a schematic diagram of the position of the support spring;

[0014] Among them, 1 transmission shaft, 2 base, 3 connecting plate, 4 manual ratchet, 5 support arm, 6 left brake lever arm, 7 right brake lever arm, 8 cross arm, 9 connecting arm, 10 support sleeve, 11 triangle plate, 12 brake pad, 13 support spring, 14 shaft sleeve. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0016] refer to Figure 1-3The utility model provides a mechanical drum filter transmission shaft 1 brake device, which is used to brake the drum filter transmission shaft 1, and includes a base 2, a connecting plate 3, a manual ratchet 4, a support arm 5, a left brake arm 6, a right brake arm 7 and a cross arm 8;

[0017] The manual ratchet 4 is fixed on a connecting arm 9, the upper end of which is rotatably fixed on the connecting plate 3, and the lower end of which is rotatably fixed on the base 2; rotating the manual ratchet 4 drives the upper end of the connecting arm 9 to move downward, and vice versa to restore the position.

[0018] The support arm 5 is located at the side of the connecting arm 9, the upper end of which is rotatably fixed on the connecting plate 3, and the lower end of which is inserted into a support sleeve 10;

[0019] The left and right brake lever arms 7 are arranged opposite to each other, and a triangular plate 11 is arranged on each of them. The outer side surface of the triangular plate 11 is designed as an arc surface, and a brake pad 12 is arranged on the arc surface. The two arc surfaces of the two triangular plates 11 are used to support and hold the transmission shaft 1; the transmission shaft 1 is provided with a shaft sleeve; wherein the upper end of the left brake lever arm can be rotatably fixed on the connecting plate 3, and the lower end can be rotatably fixed on the base 2;

[0020] One end of the cross arm 8 is rotatably fixed on the connecting plate 3 , and the other end is rotatably connected to the upper end of the right brake arm 7 , and the lower end of the right brake arm is rotatably fixed on the base 2 .

[0021] After the drum filter motor stops supplying power, manually turn the ratchet to make the brake pad 12 fully contact with the shaft sleeve. The friction force allows the drum filter device to quickly decelerate. When the drum filter device is working normally, rotate the ratchet in the opposite direction to move the brake pad 12 away from the transmission shaft 1, thereby losing the braking effect. At the same time, when the drum filter device does not need braking for a long time, the brake device can be completely removed by removing the bolt at the lower right corner, without affecting the aesthetics of the drum filter device.

[0022] As an improvement to the solution, the base 2 is fixed to the ground via expansion bolts.

[0023] As an improvement of the solution, a support spring 13 is provided at the bottom of the support sleeve 10. The support spring 13 is a rebound device. After the transmission shaft 1 is braked and fixed, the spring 13 is used to rebound, and the brake device is placed to lock the transmission shaft 1 for a long time.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mechanical drum filter transmission shaft brake device, characterized in that: It includes a base, a connecting plate, a manual ratchet, a support arm, and left and right brake force arms and a cross arm; A manual ratchet is fixed to a connecting arm, the upper end of which is rotatably fixed to the connecting plate, and the lower end of which is rotatably fixed to the base; The support arm is located at the side of the connecting arm, the upper end of which can be rotatably fixed on the connecting plate, and the lower end of which is inserted into a support sleeve; The left and right brake lever arms are arranged opposite to each other, and a triangular plate is arranged on each of them. The outer side surface of the triangular plate is designed as an arc surface, and a brake pad is arranged on the arc surface. The two arc surfaces of the two triangular plates are used to support and hold the transmission shaft; a shaft sleeve is arranged on the transmission shaft; the upper end of the left brake lever arm can be rotatably fixed on the connecting plate, and the lower end can be rotatably fixed on the base; One end of the horizontal arm is rotatably fixed on the connecting plate, and the other end is rotatably connected to the upper end of the right brake lever arm. The lower end of the right brake lever arm is rotatably fixed on the base.

2. A mechanical drum filter transmission shaft brake device as claimed in claim 1, characterized in that: The base is fixed to the ground via expansion bolts.

3. A mechanical drum filter transmission shaft brake device as claimed in claim 1, characterized in that: A supporting spring is arranged at the inner bottom of the supporting sleeve.

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