Double-gate airlock wear-resistant ceramic balance valve

Abstract

The utility model relates to the technical field of balance valves, in particular to a double-gate airlock wear-resistant ceramic balance valve which comprises a valve body. Connecting flanges are installed at the two ends of the valve body, and connecting holes are formed in the outer walls of the connecting flanges. A connecting port is formed in the outer wall of the valve body, a connecting pipe is installed in the connecting port, an air cylinder is installed at the top of the connecting pipe, and a piston rod is installed at the bottom of the air cylinder; a sealing groove is formed in the inner wall of the valve body, and a sealing gate plate is arranged on the inner wall of one side of the sealing groove. According to the utility model, the whole structure is simple, the use cost is lower, and the sealing gate plate is not easy to break down during operation, so that the operation efficiency of a thermal power plant is improved; the sealing flashboard is formed by combining the two flashboards, so that the structural strength of the sealing flashboard is improved, the wear resistance of the sealing flashboard is further improved, and the overall sealing performance is finally improved.

Description

Technical Field

[0001] The utility model relates to the technical field of balancing valves, in particular to a double-disc air-lock wear-resistant ceramic balancing valve. Background Art

[0002] A thermal power plant, also known as a cogeneration plant or coal-fired power plant, is a facility that generates electricity by burning fossil fuels such as coal, natural gas, or oil. Its operating principle is based on converting the fuel's chemical energy into heat, then into mechanical energy, and finally into electricity. In a thermal power plant, fuel is burned in a boiler to produce high-temperature, high-pressure steam. This steam rotates a turbine, which is then connected to a generator. The resulting mechanical energy is ultimately converted into electricity.

[0003] Currently, a balancing valve is required for the ventilation balance of ash and slag in the dry ash system of a thermal power plant. However, the existing balancing valve has a complex structure and a high cost of use. Due to the complex structure of the balancing valve, the balancing valve is prone to failure during operation, seriously affecting the operating efficiency of the thermal power plant. In addition, the sealing gate of the existing balancing valve has poor wear resistance, and long-term use may reduce the sealing performance of the balancing valve.

[0004] Therefore, a double-disc air-lock wear-resistant ceramic balancing valve is proposed. Utility Model Content

[0005] The utility model aims to provide a double-disc air-lock wear-resistant ceramic balancing valve.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] Double-disc air-lock wear-resistant ceramic balancing valve, including:

[0008] Valve body;

[0009] Both ends of the valve body are equipped with connecting flanges, and the outer wall of the connecting flange is provided with a connecting hole;

[0010] The outer wall of the valve body is provided with a connecting port, a connecting pipe is installed in the connecting port, a cylinder is installed on the top of the connecting pipe, and a piston rod is installed at the bottom of the cylinder;

[0011] A sealing groove is provided on the inner wall of the valve body, and a sealing gate is provided on the inner wall of one side of the sealing groove;

[0012] The bottom of the piston rod passes through the connecting pipe and is fixed to the sealing gate.

[0013] Preferably, a sealing block is installed on the outer wall of the piston rod.

[0014] Preferably, the sealing block can slide along the height direction of the connecting pipe.

[0015] Preferably, a limiting block is provided in the sealing groove, and one end of the limiting block abuts against the sealing gate.

[0016] Preferably, the outer wall of the valve body is provided with a first internal threaded hole connected to the sealing groove, a connecting rod is connected to the first internal threaded hole, a turning bar is fixed to one end of the connecting rod, and the other end of the connecting rod is connected to the limit block.

[0017] Preferably, the outer wall of the connecting rod is provided with an external thread, and the connecting rod is threadedly connected to the inside of the first internal threaded hole through the external thread;

[0018] A second internal threaded hole is formed on one end of the limit block close to the connecting rod;

[0019] The connecting rod is threadedly connected to the inside of the second internal threaded hole through an external thread.

[0020] Preferably, the valve body is made of a combination of cast steel, cast iron and wear-resistant ceramics.

[0021] Preferably, the sealing gate is composed of two gates.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] The utility model utilizes a connecting flange to fit a connecting hole and fixing bolts to install the valve body on the corresponding pipeline of the thermal power plant. Then, by starting the cylinder, the sealing gate is driven to move by the piston rod under the action of the cylinder. By adjusting the position of the sealing gate in the sealing groove, the opening of the valve body can be adjusted, thereby completing the air permeability balance work of the ash and slag of the dry ash system of the thermal power plant. Compared with the existing ones, the utility model has a simple overall structure and a low use cost, and is less likely to malfunction during operation, thereby improving the operating efficiency of the thermal power plant.

[0024] Since the sealing gate is composed of two gate plates, the structural strength of the sealing gate is improved, which in turn improves the wear resistance of the sealing gate and ultimately improves the overall sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0027] Figure 3 Schematic diagram of the connection structure of the limit block in the present utility model;

[0028] Figure 4 This is a schematic diagram of the connection port structure in the present utility model.

[0029] In the figure: 1. Valve body; 2. Connecting flange; 3. Connecting hole; 4. Connecting port; 5. Connecting pipe; 6. Cylinder; 7. Piston rod; 8. Sealing gate; 9. Sealing groove; 10. Sealing block; 11. First internal thread; 12. Connecting rod; 13. External thread; 14. Turning strip; 15. Limit block; 16. Second internal thread. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0032] Example 1:

[0033] See also Figure 1 、 2 4. The utility model provides a technical solution: In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a double-gate air-lock wear-resistant ceramic balancing valve, comprising: a valve body 1; connecting flanges 2 are installed at both ends of the valve body 1, and a connecting hole 3 is opened on the outer wall of the connecting flange 2; a connecting port 4 is opened on the outer wall of the valve body 1, a connecting pipe 5 is installed in the connecting port 4, a cylinder 6 is installed on the top of the connecting pipe 5, and a piston rod 7 is installed on the bottom of the cylinder 6; a sealing groove 9 is opened on the inner wall of the valve body 1, and a sealing gate 8 is provided on the inner wall of one side of the sealing groove 9; the bottom of the piston rod 7 passes through the connecting pipe 5 and is fixed to the sealing gate 8, and a sealing block 10 is installed on the outer wall of the piston rod 7, and the sealing block 10 can slide along the height direction of the connecting pipe 5. The valve body 1 is composed of cast steel, cast iron and wear-resistant ceramics, and the sealing gate 8 is composed of two gates.

[0034] Specifically, the utility model utilizes the connecting flange 2 to cooperate with the connecting hole 3 and the fixing bolts to install the valve body 1 on the corresponding pipeline of the thermal power plant. Then, by starting the cylinder 6, the sealing gate plate 8 is driven to move by the piston rod 7 under the action of the cylinder 6. By adjusting the position of the sealing gate plate 8 in the sealing groove 9, the opening of the valve body 1 can be adjusted, thereby completing the air permeability balance work of the ash and slag of the dry ash system of the thermal power plant. Compared with the existing ones, the utility model has a simple overall structure and a low cost of use, making it less likely to fail during operation, thereby improving the operating efficiency of the thermal power plant.

[0035] Since the sealing gate plate 8 is composed of two gate plates, the structural strength of the sealing gate plate 8 is improved, thereby also improving the wear resistance of the sealing gate plate 8, and ultimately improving the overall sealing performance;

[0036] Since a sealing block 10 is installed on the outer wall of the piston rod 7, the sealing block 10 can improve the sealing performance of the connection pipe 5 and the cylinder 6 to avoid leakage;

[0037] Since the valve body 1 is composed of cast steel, cast iron, and wear-resistant ceramics, the structural strength of the valve body 1 is improved, the wear resistance of the valve body 1 is improved, and ultimately the overall sealing performance is improved.

[0038] Example 2:

[0039] See also Figure 1 、 3 4. The utility model provides a technical solution: a double-gate air-lock wear-resistant ceramic balancing valve, a limit block 15 is provided in the sealing groove 9, one end of the limit block 15 abuts against the sealing gate 8, and a first internal thread 11 hole connected to the sealing groove 9 is opened on the outer wall of the valve body 1, a connecting rod 12 is connected to the first internal thread 11 hole, a turning bar 14 is fixed to one end of the connecting rod 12, and the other end of the connecting rod 12 is connected to the limit block 15, an external thread 13 is provided on the outer wall of the connecting rod 12, and the connecting rod 12 is threadedly connected to the inside of the first internal thread 11 hole through the external thread 13; a second internal thread 16 hole is opened on the end of the limit block 15 close to the connecting rod 12; the connecting rod 12 is threadedly connected to the inside of the second internal thread 16 hole through the external thread 13.

[0040] Specifically, by rotating the connecting rod 12 through the turning bar 14 so that the connecting rod 12 is threadedly connected to the first internal thread 11 hole and the second internal thread 16 hole through the external thread 13, the limit block 15 can be fixed. Since the limit block 15 is provided and one end of the limit block 15 is in contact with the sealing gate plate 8, the sealing gate plate 8 can be supported and fixed under the action of the limit block 15, thereby preventing the sealing gate plate 8 from being deformed due to excessive force, thereby improving the sealing effect of the sealing gate plate 8.

[0041] Working principle:

[0042] First, the valve body 1 is installed on the corresponding pipeline of the thermal power plant by using the connecting flange 2, the connecting hole 3 and the fixing bolts. Then, by starting the cylinder 6, the sealing gate 8 is driven to move by the piston rod 7 under the action of the cylinder 6. By adjusting the position of the sealing gate 8 in the sealing groove 9, the opening of the valve body 1 can be adjusted, thereby completing the air permeability balance work of the ash and slag in the dry ash system of the thermal power plant. Compared with the existing ones, the overall structure of the utility model is simple, the use cost is low, and it is not easy to malfunction during operation, thereby improving the operating efficiency of the thermal power plant;

[0043] Since the sealing gate plate 8 is composed of two gate plates, the structural strength of the sealing gate plate 8 is improved, thereby also improving the wear resistance of the sealing gate plate 8, and ultimately improving the overall sealing performance;

[0044] Secondly, the connecting rod 12 is rotated by the turning bar 14 so that the connecting rod 12 is threadedly connected to the first internal thread 11 hole and the second internal thread 16 hole through the external thread 13, and then the limit block 15 can be fixed. Since the limit block 15 is provided and one end of the limit block 15 is in contact with the sealing gate plate 8, the sealing gate plate 8 can be supported and fixed under the action of the limit block 15, thereby avoiding the sealing gate plate 8 from being deformed by excessive force, thereby improving the sealing effect of the sealing gate plate 8.

[0045] In the description of the present invention, it should be understood that the terms "center", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0046] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. Double-disc air-lock wear-resistant ceramic balancing valve, characterized by: include: Valve body (1); Both ends of the valve body (1) are equipped with connecting flanges (2), and the outer wall of the connecting flange (2) is provided with a connecting hole (3); The outer wall of the valve body (1) is provided with a connecting port (4), a connecting pipe (5) is installed in the connecting port (4), a cylinder (6) is installed on the top of the connecting pipe (5), and a piston rod (7) is installed on the bottom of the cylinder (6); The inner wall of the valve body (1) is provided with a sealing groove (9), and the inner wall of one side of the sealing groove (9) is provided with a sealing gate (8); The bottom of the piston rod (7) passes through the connecting pipe (5) and is fixed to the sealing gate (8).

2. The double-disc air-lock wear-resistant ceramic balancing valve according to claim 1 is characterized in that: A sealing block (10) is installed on the outer wall of the piston rod (7).

3. The double-disc air-lock wear-resistant ceramic balancing valve according to claim 2 is characterized in that: The sealing block (10) can slide along the height direction of the connecting pipe (5).

4. The double-disc air-lock wear-resistant ceramic balancing valve according to claim 1 is characterized in that: A limiting block (15) is provided in the sealing groove (9), and one end of the limiting block (15) abuts against the sealing gate plate (8).

5. The double-disc air-lock wear-resistant ceramic balancing valve according to claim 4 is characterized in that: The outer wall of the valve body (1) is provided with a first internal thread (11) hole connected to the sealing groove (9), a connecting rod (12) is connected to the first internal thread (11) hole, a rotating bar (14) is fixed to one end of the connecting rod (12), and the other end of the connecting rod (12) is connected to a limit block (15).

6. The double-disc air-lock wear-resistant ceramic balancing valve according to claim 5 is characterized in that: The outer wall of the connecting rod (12) is provided with an external thread (13), and the connecting rod (12) is threadedly connected to the interior of the first internal thread (11) hole via the external thread (13); The limiting block (15) is provided with a second internal threaded hole (16) at one end close to the connecting rod (12); The connecting rod (12) is threadedly connected to the interior of the second internal thread (16) hole via an external thread (13).

7. The double-disc air-lock wear-resistant ceramic balancing valve according to claim 1 is characterized in that: The valve body (1) is composed of cast steel, cast iron and wear-resistant ceramics.

8. The double-disc air-lock wear-resistant ceramic balancing valve according to claim 1 is characterized in that: The sealing gate (8) is composed of two gates.

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