Soot blower valve capable of adjusting pressure on line

Abstract

The utility model discloses a soot blower valve capable of regulating pressure on line, which is characterized in that a valve cavity and an air inlet are arranged in a valve body, an air outlet communicated with the valve cavity is further arranged on the valve body, a through hole communicated with the air inlet and the valve cavity is arranged in the valve body, a valve seat is arranged in the through hole, and the valve seat is arranged on the valve body. The packing chamber is in a hollow barrel shape and is fixedly installed on the valve body, the lower end of the packing chamber extends into the valve cavity, threads are arranged at the upper end and the lower end of the packing chamber respectively, the packing nut is installed at the threads at the upper end of the packing chamber, the packing chamber is filled with packing, and the valve rod penetrates through the packing chamber and extends downwards into the valve cavity. The on-line pressure regulating valve has the advantages that the purpose of on-line pressure regulation outside the valve body can be easily achieved, the pressure regulation work is simple and fast, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of soot blowers, and more specifically to the technical field of lifting valves used for soot blowers. Background Art

[0002] The soot blower is mainly used to blow away the ash and slag on the heating surface of the boiler. It can also be used to remove the ash and slag on the superheater, reheater and economizer, and can also be used to remove the ash on the furnace top and tubular air preheater. When the soot blower is working, the soot blower is pulled by the running mechanism to rotate and extend into the furnace of the boiler. At the same time, the lifting valve is opened through the running mechanism, so that the high-pressure gas enters the furnace through the lifting valve and the soot blower to blow the soot in the furnace.

[0003] Existing soot blowers such as Figure 3 As shown, it mainly includes a valve body 1, a valve stem 2, a valve disc 14, a pressure regulating disk 5, a stuffing chamber 3, a stuffing nut 4, a spring 6, a spring gland 7, a starter arm 20 and a starter arm connecting card 21. A valve cavity 8 and an air inlet 9 are provided in the valve body 1. An air outlet 10 connected to the valve cavity 8 is also provided on the valve body 1. A through hole connected to the air inlet 9 and the valve cavity 8 is provided in the valve body 1. The stuffing chamber 3 is fixedly installed on the valve body 1 in a hollow cylindrical shape, and its lower end extends into the valve cavity 8. Threads are respectively provided at the upper and lower ends of the stuffing chamber 3. The stuffing nut 4 and the pressure regulating disk 5 are respectively screwed on the upper and lower ends of the stuffing chamber 3. The stuffing chamber 3 is filled with stuffing A locking screw plug 24 is also installed on the valve body 1, and the pin head at the front end of the locking screw plug 24 is stuck in the groove of the pressure regulating disk 5. The valve stem 2 is inserted into the stuffing chamber 3 and extends downward into the valve cavity 8. A valve seat 11 is fixedly installed at the through hole. The spring pressure cover 7 is sleeved on the valve stem 2. The spring sleeve 7 is on the valve stem 2 and is located between the stuffing nut 4 and the spring pressure cover 7. One side of the lower end of the starting arm 20 is hingedly installed on the valve body 1, and the other side of the lower end of the starting arm 20 is movably connected to the upper end of the valve stem 2 through the starting arm connecting card 21. The valve disc 14 is fixedly installed at the lower end of the valve stem 2 and is blocked at the valve seat 11 under the elastic force of the spring 6.

[0004] When pressure regulation is required, first close the gas source pipeline upstream of the lifting valve, connect a pressure gauge to the outlet 10 of the lifting valve, then remove the locking screw 24, and use a screwdriver or similar tool to turn the pressure regulating disc 5 to rotate it. Since the pressure regulating disc 5 is threadedly connected to the packing chamber 3, the pressure regulating disc 5 can move up and down when it rotates, changing the distance between the pressure regulating disc 5 and the valve seat 11, thereby achieving the purpose of pressure regulation. When the pressure regulation is completed, screw the locking screw 24 onto the lifting valve, and make the pin head at the front end of the locking screw 24 stuck in the groove of the pressure regulating disc 5, lock the pressure regulating disc 5, and then start the soot blower again, and determine whether it has been adjusted to the required pressure based on the pressure reading. If the pressure value obtained does not meet the requirements, the above operation needs to be repeated until the air pressure value is adjusted to the required value. Pressure regulation is very troublesome, time-consuming and labor-intensive. Utility Model Content

[0005] In order to solve the above-mentioned shortcomings, the utility model provides a sootblower valve capable of online pressure regulation. It is unnecessary to repeatedly disassemble and assemble the locking screw plug, and the pressure regulating disk in the valve cavity is pulled out to regulate the pressure. The online pressure regulation can be performed on the outside of the valve body, and the pressure regulation work is simple and fast, saving time and effort.

[0006] The technical solutions adopted by the utility model to solve the above technical problems are as follows:

[0007] A sootblower valve capable of online pressure regulation comprises a valve body, a valve stem, a stuffing chamber, a stuffing nut, a pressure regulating disc, a spring and a spring gland. A valve cavity and an air inlet are provided in the valve body, an air outlet connected to the valve cavity is also provided on the valve body, a through hole connected to the air inlet and the valve cavity is provided in the valve body, a valve seat is installed in the through hole, the stuffing chamber is in a hollow cylindrical shape and fixedly installed on the valve body, and its lower end extends into the valve cavity, threads are respectively provided at the upper and lower ends of the stuffing chamber, the stuffing nut is installed at the thread at the upper end of the stuffing chamber, and the stuffing chamber is filled with stuffing The valve stem is inserted into the packing chamber and extends downward into the valve cavity. A first polyhedron is arranged on the valve stem in the valve cavity. A first polyhedron hole corresponding to the first polyhedron is opened on the pressure regulating disk. The pressure regulating disk is sleeved on the first polyhedron of the valve stem through the first polyhedron hole and is threadedly connected to the lower end of the packing chamber. A valve disc is installed at the lower end of the valve stem, and the valve disc corresponds to the valve seat. The spring pressure cap is fixed on the valve stem. Rotating the spring pressure cap drives the valve stem to rotate together. The spring is sleeved on the valve stem and is located between the spring pressure cap and the packing nut.

[0008] Preferably, a second polyhedron is disposed at the upper end of the valve stem, a second polyhedron hole corresponding to the second polyhedron is opened on the spring pressure cover, and the spring pressure cover is sleeved on the second polyhedron of the valve stem through the second polyhedron hole.

[0009] Preferably, it also includes a U-shaped card, the outer side of the U-shaped card is set as a third polyhedron corresponding to the second polyhedron surface, the U-shaped card is clamped at the second polyhedron of the valve stem and is located in the second polyhedron surface of the spring pressure cover.

[0010] Preferably, it further comprises a locking fork, and a convex ring is further provided at the upper end of the valve stem, and the locking fork is forked on the valve stem and located between the convex ring and the spring pressure cover.

[0011] Preferably, extraction holes are provided around the spring gland.

[0012] Preferably, it also includes a starting arm and a starting arm connecting card, the upper end of the valve stem is also provided with a pressure cap, one side of the lower end of the starting arm is hingedly mounted on the valve body, and the pressure cap at the upper end of the valve stem is movably connected to the other side of the lower end of the starting arm through the starting arm connecting card.

[0013] Preferably, a pressure gauge hole is also provided on the valve body.

[0014] The beneficial effects that can be achieved by the utility model using the above technical solution are:

[0015] By fixing the spring pressure cap on the valve stem and rotating the spring pressure cap outside the valve body, the pressure regulating disk inside the valve body can be driven to rotate. Without shutting off the gas source, the purpose of online pressure regulation outside the valve body can be easily achieved. The pressure regulation work is simple and quick, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0018] Figure 3 It is a structural schematic diagram of the prior art.

[0019] 1. Valve body; 2. Valve stem; 3. Stuffing chamber; 4. Stuffing nut; 5. Pressure regulating plate; 6. Spring; 7. Spring gland; 8. Valve cavity; 9. Air inlet; 10. Air outlet; 11. Valve seat; 12. First polyhedron; 13. First polyhedron hole; 14. Valve disc; 15. Second polyhedron; 16. Second polyhedron hole; 17. U-shaped card; 18. Lock fork; 19. Raised ring; 20. Starter arm; 21. Starter arm connecting card; 22. Pressure cap; 23. Pressure gauge hole. DETAILED DESCRIPTION

[0020] Depend on Figure 1 and Figure 2As shown, a sootblower valve capable of online pressure regulation comprises a valve body 1, a valve stem 2, a stuffing chamber 3, a stuffing nut 4, a pressure regulating disk 5, a spring 6 and a spring gland 7. A valve cavity 8 and an air inlet 9 are provided in the valve body 1. An air outlet 10 communicating with the valve cavity 8 is also provided on the valve body 1. A through hole communicating with the air inlet 9 and the valve cavity 8 is provided in the valve body 1. A valve seat 11 is installed in the through hole. The stuffing chamber 3 is in a hollow cylindrical shape and is fixedly installed on the valve body 1. The lower end of the stuffing chamber 3 is provided with threads respectively. The stuffing nut 4 is installed at the upper end thread of the stuffing chamber 3. The stuffing chamber 3 is filled with stuffing to play a sealing role. The valve stem 2 is inserted into the stuffing chamber 3 and extends downward into the valve cavity 8. A first polyhedron 12 is provided on the valve stem 2 in the valve cavity 8, and a first polyhedron hole 13 corresponding to the first polyhedron 12 is opened on the pressure regulating disk 5. The pressure regulating disk 5 is sleeved on the first polyhedron 12 of the valve stem 2 through the first polyhedron hole 13, and is threadedly connected to the lower end of the stuffing chamber 3. When the valve stem 2 rotates, the valve stem 2 drives the pressure regulating disk 5 to rotate together through its first polyhedron 12, and the pressure regulating disk 5 moves up and down under the action of the thread at the lower end of the stuffing chamber 3. A valve disc 14 is installed at the lower end of the valve stem 2, and the valve disc 14 corresponds to the valve seat 11. The spring pressure cover 7 is fixed on the valve stem 2. Rotating the spring pressure cover 7 drives the valve stem 2 to rotate together. The spring 6 is sleeved on the valve stem 2 and is located between the spring pressure cover 7 and the packing nut 4.

[0021] The spring gland 7 can be fixed on the valve stem 2 in the following manner: the upper end of the valve stem 2 is provided with a second polyhedron 15, and the spring gland 7 is provided with a second polyhedron hole 16 corresponding to the second polyhedron 15, and the spring gland 7 is sleeved on the second polyhedron 15 of the valve stem 2 through the second polyhedron hole 16, so that when the spring gland 7 is rotated, the spring gland 7 can drive the valve stem 2 to rotate through the second polyhedron hole 16, and for easy disassembly and assembly, it also includes a U-shaped card 17, the outer side of the U-shaped card 17 is set as a third polyhedron corresponding to the second polyhedron hole 16, and the U-shaped card 17 is clamped at the second polyhedron 15 of the valve stem 2 and is located in the second polyhedron hole 16 of the spring gland 7. It also includes a locking fork 18, and the upper end of the valve stem 2 is also provided with a convex ring 19, and the locking fork 18 is forked on the valve stem 2 and located between the convex ring 19 and the spring gland 7, and the spring gland 7 is locked on the valve stem 2 by the locking fork 18.

[0022] In order to facilitate the rotation of the spring pressure cover 7, extraction holes 19 are opened around the spring pressure cover 7. When rotating, the spring pressure cover 7 can be conveniently rotated by inserting a round rod into the extraction hole 19.

[0023] It also includes a starting arm 20 and a starting arm connecting card 21. The upper end of the valve stem 2 is also provided with a pressure cap 22. One side of the lower end of the starting arm 20 is hingedly mounted on the valve body 1. The pressure cap 22 at the upper end of the valve stem 2 is movably connected to the other side of the lower end of the starting arm 20 through the starting arm connecting card 21.

[0024] When adjusting the pressure, in order to conveniently observe the real-time air pressure value nearby, a pressure gauge hole 23 is also opened on the valve body 1. When in use, a pressure gauge is installed at the pressure gauge hole 23.

[0025] Working principle: by setting a second polyhedron 15 structure at the upper end of the valve stem 2, and then opening a second polyhedron hole 16 structure corresponding to the second polyhedron 15 on the spring pressure cap 7, the spring pressure cap 7 is sleeved on the second polyhedron 15 of the valve stem 2 through its second polyhedron hole 16, and rotating the spring pressure cap 7, the spring pressure cap 7 can drive the valve stem 2 to rotate through the mutually matched polyhedron structures, and the first polyhedron 12 structure is set on the valve stem 2 located in the valve cavity 8, and then opening a first polyhedron hole 13 structure corresponding to the first polyhedron 12 on the pressure regulating disk 5, the pressure regulating disk 5 is sleeved on the first polyhedron 12 of the valve stem 2 through its first polyhedron hole 13, and the pressure regulating disk 5 is also threadedly connected to the lower end of the stuffing chamber 3, so that when the valve stem 2 rotates under the action of the spring pressure cap 7, the valve stem 2 will drive the pressure regulating disk 5 to rotate through the first polyhedron 12, and the pressure regulating disk 5 can move up and down on the stuffing chamber 3, thereby changing the distance between the pressure regulating disk 5 and the valve seat 11, thereby playing a role in pressure regulation.

Claims

1. A sootblower valve capable of online pressure regulation comprises a valve body, a valve stem, a stuffing chamber, a stuffing nut, a pressure regulating plate, a spring and a spring gland, wherein a valve cavity and an air inlet are provided in the valve body, an air outlet connected to the valve cavity is also provided on the valve body, a through hole connected to the air inlet and the valve cavity is provided in the valve body, the stuffing chamber is in a hollow cylindrical shape and fixedly mounted on the valve body, and its lower end extends into the valve cavity, threads are respectively arranged at the upper and lower ends of the stuffing chamber, the stuffing nut is mounted at the thread at the upper end of the stuffing chamber, the stuffing chamber is filled with stuffing, the valve stem is inserted into the stuffing chamber, and extends downward into the valve cavity, characterized in that: A first polyhedron is arranged on the valve stem located in the valve cavity, and a first polyhedron hole corresponding to the first polyhedron is opened on the pressure regulating disk. The pressure regulating disk is sleeved on the first polyhedron of the valve stem through the first polyhedron hole and is threadedly connected to the lower end of the packing chamber. The spring pressure cap is fixed on the valve stem, and rotating the spring pressure cap drives the valve stem to rotate together. The spring is sleeved on the valve stem and is located between the spring pressure cap and the packing nut.

2. The sootblower valve capable of online pressure regulation according to claim 1, characterized in that: A second polyhedron is arranged at the upper end of the valve stem, a second polyhedron hole corresponding to the second polyhedron is opened on the spring pressure cover, and the spring pressure cover is sleeved on the second polyhedron of the valve stem through the second polyhedron hole.

3. The sootblower valve capable of online pressure regulation according to claim 2, characterized in that: It also includes a U-shaped card, the outer side of which is arranged as a third polyhedron corresponding to the second polyhedron surface. The U-shaped card is clamped at the second polyhedron of the valve stem and is located in the second polyhedron surface of the spring pressure cover.

4. The sootblower valve capable of online pressure regulation according to claim 3, characterized in that: It also includes a locking fork. The upper end of the valve stem is also provided with a convex ring. The locking fork is forked on the valve stem and is located between the convex ring and the spring pressure cover.

5. The sootblower valve capable of online pressure regulation according to claim 1, 2, 3 or 4, characterized in that: The spring gland is provided with extraction holes around its periphery.

6. The sootblower valve capable of online pressure regulation according to claim 1, 2, 3 or 4, characterized in that: It also includes a starting arm and a starting arm connecting card. The upper end of the valve stem is also provided with a pressure cap. One side of the lower end of the starting arm is hingedly installed on the valve body. The pressure cap at the upper end of the valve stem is movably connected to the other side of the lower end of the starting arm through the starting arm connecting card.

7. The sootblower valve capable of online pressure regulation according to claim 1, 2, 3 or 4, characterized in that: The valve body is also provided with a pressure gauge hole.

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