Adjustable nozzle adjusting valve convenient to disassemble

Abstract

The utility model discloses an adjustable nozzle adjusting valve convenient to disassemble, and belongs to the field of nozzle adjusting valves. In modern industrial production, a valve rod of a nozzle regulating valve is mostly of an integral structure, needs to be integrally replaced when being locally abraded, and is high in cost and inconvenient to disassemble, the lower end of a straight-through nozzle seat is usually sealed by welding, and when internal parts are blocked or damaged, the disassembly difficulty is high. The straight-through nozzle comprises an executing mechanism, an upper valve body assembly, a lower valve body assembly, a valve rod, a valve seat, a straight-through nozzle seat and a nozzle, the upper valve body is connected with the lower valve body through a flange structure, a detachable blank cap is arranged at the bottom of the straight-through nozzle seat, the valve rod is divided into a valve element rod and a piston rod, and the valve element rod and the piston rod are connected through threads and a cylindrical pin. The actuating mechanism is composed of a pneumatic stroke film actuator and the like, and the flow can be accurately controlled in cooperation with an adjusting mechanism with a dial. According to the regulating valve, through detachable design, the maintenance time is shortened, the cost is reduced, and meanwhile accurate flow regulation and reliable operation are achieved.

Description

An easily detachable adjustable nozzle regulating valve Technical Field

[0001] This utility model relates to the field of nozzle regulating valves, and in particular to an adjustable nozzle regulating valve that is easy to disassemble. Background Technology

[0002] In modern industrial fluid control systems, nozzle regulating valves, as key devices for achieving precise flow control and temperature regulation, are widely used in various fields such as chemical engineering, energy, and environmental protection. Taking a desuperheating and pressure-reducing device as an example, its desuperheating stage relies on regulating valves to adjust the desuperheating water flow, which is then sprayed onto superheated steam through nozzles. This achieves precise control of the device's outlet temperature, ensuring the stability of the production process and product quality. However, existing nozzle regulating valves still face many unresolved issues in terms of structural design and functional implementation.

[0003] From a disassembly and maintenance perspective, the structural design of traditional nozzle control valves often neglects the convenience of later maintenance. Most control valves use a one-piece valve stem structure, requiring complete disassembly and replacement in case of localized wear or malfunction. This not only increases maintenance costs but also consumes a significant amount of time. Furthermore, the lower end of straight-through nozzle seats is usually welded shut, making internal components difficult to inspect. If the nozzle or internal flow channel becomes blocked or damaged, maintenance personnel need to expend considerable effort to disassemble the equipment, and may even cause secondary damage due to the difficulty of disassembly. In continuous industrial production scenarios, this complex maintenance process can lead to prolonged equipment downtime, severely impacting production efficiency and increasing enterprise operating costs. Summary of the Invention

[0004] The technical problem to be solved and the technical task proposed by this utility model is to improve and refine the existing technical solutions, and to provide an adjustable nozzle regulating valve that is easy to disassemble, for the purpose of facilitating disassembly and maintenance. To this end, this utility model adopts the following technical solution.

[0005] An easily detachable adjustable nozzle regulating valve includes an actuator, an upper valve body assembly, a lower valve body assembly, a valve stem, a valve seat, a straight-through nozzle seat, and a nozzle. The actuator is connected to the upper valve body assembly, the lower valve body assembly is connected to the lower part of the upper valve body assembly, and the straight-through nozzle seat is connected to the lower part of the lower valve body assembly. The nozzles are arranged from top to bottom on the side wall of the straight-through nozzle seat. The lower valve body assembly has a vertically penetrating flow channel cavity, and the straight-through nozzle seat has a flow channel cavity closed at its lower end. The valve seat is located at the upper end of the flow channel cavity of the lower valve body assembly. The upper and lower valve body assemblies are connected by a flange connection structure using a combination of threaded screws and nuts. The straight-through nozzle seat... The bottom of the nozzle seat is detachably connected to a nozzle seat cap to seal the lower end of the inner cavity of the straight-through nozzle seat. The valve stem includes a valve core rod and a piston rod. The upper end of the valve core rod passes upward through the upper valve body assembly and is connected to the push rod of the actuator through an opening and closing nut. The valve core rod passes downward through the inner cavity of the flow channel of the upper valve body assembly and the central flow channel hole of the valve seat. The lower end of the valve core rod is provided with a valve core part, which is located below the valve seat. When the valve core rod moves upward until its upper end abuts against the valve seat, the vertical flow channel of the regulating valve is closed. The upper end of the piston rod is detachably connected to the valve core part, and the lower end of the piston rod is provided with a piston part. The opening of the nozzle is adjusted by the vertical movement of the piston part in the inner cavity of the flow channel of the straight-through nozzle seat to control the fluid flow rate. The upper and lower valve body assemblies adopt a flange connection structure with a combination of threaded screws and nuts for fastening. The bottom of the straight-through nozzle seat is detachably connected to a cap. The valve stem is divided into a detachable valve core rod and a piston rod, which greatly improves the ease of disassembly of the regulating valve, facilitates maintenance, shortens maintenance time, and reduces maintenance costs.

[0006] As a preferred technical means: the actuator includes a pneumatic diaphragm actuator, an air filter pressure reducing valve, and an electric valve positioner. All three are connected to a bracket, which is fixed to the upper valve body assembly. The air path of the air filter pressure reducing valve is connected to the electric valve positioner, and the air path of the electric valve positioner is connected to the pneumatic diaphragm actuator. The air filter pressure reducing valve purifies the air source, ensuring gas cleanliness and preventing impurities from affecting actuator performance. The electric valve positioner precisely controls the pneumatic diaphragm actuator, making its action more sensitive and accurate, thereby achieving precise drive of the regulating valve and improving flow control accuracy and response speed.

[0007] As a preferred technical means: the pneumatic stroke diaphragm actuator is equipped with an adjustment mechanism, which includes a handwheel and an adjustment screw or worm gear mechanism connected to the handwheel. The adjustment screw or worm gear mechanism is connected to the push rod of the actuator. The adjustment mechanism is equipped with a dial or electronic display. When the handwheel operates the adjustment screw or worm gear mechanism, the dial or electronic display shows the corresponding flow rate value. By rotating the handwheel to adjust the nozzle opening, the dial or electronic display shows the flow rate value in real time, allowing the operator to intuitively understand the flow status, achieve precise adjustment, avoid manual estimation errors, and improve the accuracy and efficiency of flow control.

[0008] As a preferred technical means, the upper end of the piston rod and the valve core are engaged by a vertical thread and fixed by a horizontally inserted heavy-duty cylindrical pin. This connection method ensures both tightness and stability of the connection, and facilitates disassembly. When maintaining or replacing parts, the piston rod and valve core can be quickly separated, improving maintenance efficiency. At the same time, the double fixing structure ensures that the valve rod is stable and reliable during adjustment and will not loosen.

[0009] As a preferred technical approach, the piston portion is provided with a sealing ring groove on its outer periphery, and a sealing element is provided in the sealing ring groove. The sealing element is elastically pressed against the inner wall of the straight-through nozzle seat. Compared with the traditional multi-seal ring groove and corresponding multi-seal element, the single-seal structure is simpler and more convenient to process and requires less manufacturing work while ensuring the piston sealing effect.

[0010] As a preferred technical means, the sealing element includes a packing gland and multiple sealing rings. The packing gland is located at the bottom inner side of the ring groove, and the multiple sealing rings are vertically stacked on the outer side of the packing gland. The sealing element employs a combination of packing gland and multiple sealing rings. The packing gland, located on the inner side, provides a basic seal, while the multiple sealing rings, arranged vertically close together on the outer side, further enhance the sealing effect. This allows it to adapt to pressure changes under different operating conditions, maintaining good sealing performance even under high pressure or pressure fluctuation conditions, thus extending the service life of the sealing element.

[0011] As a preferred technical means: the lower end of the bracket is provided with a connecting part, which is sleeved on the stepped shaft at the upper end of the upper valve body assembly. A round nut is provided on the top of the connecting part, and the round nut is tightened by threaded engagement with the upper end of the upper valve body assembly. This structure is convenient and quick to install and disassemble, and ensures a stable connection between the bracket and the upper valve body assembly. It can effectively support the actuator, ensure the stability of the actuator during operation, and reduce the impact of vibration on the performance of the regulating valve.

[0012] As a preferred technical approach: the bracket is integrally cast, and multiple mounting holes are symmetrically provided on the front and rear sides of the bracket. Integral casting results in high structural strength and good stability. Compared to spliced ​​structures, integral casting reduces connection points, avoiding the risk of failure due to loose connections. The symmetrical mounting holes on the front and rear sides facilitate the installation of other expansion components.

[0013] As a preferred technical means: a metal spiral wound gasket is provided between the upper valve body assembly and the lower valve body assembly; a metal spiral wound gasket is provided between the nozzle seat end cap and the straight-through nozzle seat; a packing seal assembly is provided at the upper end of the upper valve body assembly on the outer periphery of the valve core rod. The metal spiral wound gasket, with its excellent sealing performance and resistance to high temperature and high pressure, effectively prevents fluid leakage. The packing seal assembly at the upper end of the upper valve body assembly on the outer periphery of the valve core rod further strengthens the seal at the valve core rod, ensuring reliable sealing of the entire regulating valve, guaranteeing fluid flow along a predetermined path within the pipeline, and improving the safety and stability of equipment operation.

[0014] Beneficial effects:

[0015] 1. It facilitates the quick disassembly of the lower valve body assembly, nozzle seat end cap, and piston rod, greatly improving the ease of disassembly of the control valve, making maintenance convenient, shortening maintenance time, and reducing maintenance costs.

[0016] 2. The adjustment mechanism, equipped with a dial or electronic display, enables precise adjustment and intuitive monitoring of the nozzle opening, meeting the needs of micro-flow adjustment and high-precision flow control, and effectively avoiding product quality fluctuations caused by inaccurate flow control.

[0017] 3. The air filter pressure reducing valve can purify the air source, ensure the cleanliness of the gas, and prevent impurities from entering and affecting the performance of the pneumatic stroke diaphragm actuator. The electric valve positioner can accurately control the pneumatic stroke diaphragm actuator, making its action more sensitive and precise, thereby achieving precise drive of the regulating valve and improving the flow control accuracy and response speed. Attached Figure Description

[0018] Figure 1 is a front view schematic diagram of this utility model.

[0019] Figure 2 is a schematic diagram of the left side of this utility model.

[0020] Figure 3 is a schematic diagram of the overall structure of the upper valve body assembly and the lower valve body assembly after radial sectioning in this utility model.

[0021] Figure 4 is an enlarged schematic diagram of part A in Figure 3 of this utility model.

[0022] Figure 5 is an enlarged schematic diagram of part B in Figure 3 of this utility model.

[0023] Figure 6 is an enlarged schematic diagram of part C in Figure 3 of this utility model.

[0024] In the diagram: 1. Valve core rod; 2. Nozzle; 3. Straight-through nozzle seat; 4. Upper valve body; 5. Seamless steel pipe; 6. Necked butt-welded flange; 7. Bracket; 8. Flange; 9. Valve pipe; 10. Spiral wound gasket; 11. Valve seat; 12. Piston rod; 13. Opening nut; 14. Push rod; 15. Heavy-duty cylindrical pin; 16. Nozzle seat end cap; 17. Packing gasket; 18. Packing assembly; 19. Packing sleeve; 20. Packing pressure plate; 21. Packing gland; 22. Sealing ring; 23. Round nut; 24. Pneumatic diaphragm actuator; 25. Air filter pressure reducing valve; 26. Electrical valve positioner; 101. Valve core; 701. Connecting part; 702. Mounting pre-hole; 1201. Piston part. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings.

[0026] Example 1

[0027] As shown in Figures 1-6, an adjustable nozzle regulating valve that is easy to disassemble includes an actuator, an upper valve body assembly, a lower valve body assembly, a valve stem, a straight-through nozzle seat 3, and a nozzle 2. The upper valve body assembly includes an upper valve body 4 with a vertical flow channel cavity, a seamless steel pipe 5 for feeding, and a weld neck flange 6. The seamless steel pipe 5 for feeding and the weld neck flange 6 are welded together as a flow channel inlet and communicate with the flow channel cavity of the upper valve body 4. The actuator is connected to the upper valve body 4 via a bracket 7, and the actuator and the bracket 7 are connected by bolts.

[0028] The lower valve body assembly includes a flange 8, a valve pipe 9, and a straight-through nozzle seat 3. The upper end of the valve pipe 9 is fitted into the inverted, surrounding step at the lower end of the central flow channel hole of the flange 8. The lower outer circumference of the flange 8 and the outer circumference of the valve pipe 9 have the same diameter, and their outer circumference joints are welded together. The upper end of the straight-through nozzle seat 3 and the lower end of the valve pipe 9 are connected by threads. The straight-through nozzle seat 3 and the valve pipe 9 have a communicating vertical flow channel cavity. The outer circumferential surfaces of the valve pipe 9 and the straight-through nozzle seat 3 have the same diameter, and the lower end of the valve pipe 9 and the upper end of the straight-through nozzle seat 3 are welded together.

[0029] The lower end of the upper valve body 4 is provided with a flange interface. A metal spiral wound gasket 10 is provided between the flange interface and the flange 8 of the lower valve body assembly. The flange interface and the flange 8 of the lower valve body assembly are connected and fastened by a combination of eight sets of fully threaded bolts and type II hexagonal nuts evenly distributed around the flange. The outer peripheral end face of the flange 8 is provided with mounting bolt holes for connecting to the welded flange bolts on the steam pipeline.

[0030] There are three groups of nozzles 2. The three groups of nozzles 2 are arranged at equal intervals around the straight nozzle seat 3. The middle group of nozzles 2 consists of four nozzles, which are arranged at equal intervals vertically. The two groups of nozzles 2 on both sides each consist of three nozzles, which are arranged at equal intervals vertically. The three groups of nozzles 2 are symmetrical about the horizontal symmetry plane of the middle group of nozzles 2.

[0031] The straight-through nozzle seat 3 is provided with nozzle seat holes corresponding to the number and position of nozzles 2. The bottom of each nozzle seat hole is connected to the flow channel cavity of the straight-through nozzle seat 3 through three small holes. The nozzle seat hole is provided with a nozzle orifice plate and nozzles 2 in sequence from the inside to the outside. Each nozzle orifice plate is provided with four small holes that are set at an angle to the end face of the nozzle orifice plate to connect the nozzle seat hole and nozzles 2.

[0032] A valve seat 11 is provided at the upper end of the central flow channel hole of the flange 8. The valve stem includes a valve core rod 1 and a piston rod 12. The upper end of the valve core rod 1 passes upward through the upper valve body assembly and is connected to the push rod 14 of the actuator through the opening and closing nut 13. The valve core rod 1 passes downward through the central flow channel hole of the valve seat 11. The lower end of the valve core rod 1 is provided with a valve core part 101, which is located below the valve seat 11. When the valve core rod 1 moves upward until the upper end of its valve core part 101 abuts against the valve seat 11, it blocks the central flow channel hole of the valve seat 11, and the vertical flow channel of the regulating valve is closed. The upper end of the piston rod 12 is connected and fixed to the valve core part 101 by a vertical thread and a horizontally inserted heavy-duty cylindrical pin 15. The lower end of the piston rod 12 is provided with a piston part 1201. The opening of the nozzle 2 is adjusted by the vertical movement of the piston part 1201 in the flow channel cavity of the straight-through nozzle seat 3 to control the fluid flow rate. The bottom of the straight nozzle seat 3 is provided with a nozzle seat cap 16 to close the lower end of the flow channel cavity of the straight nozzle seat 3. A metal spiral wound gasket 10 is provided between the nozzle seat cap 16 and the straight nozzle seat 3. The nozzle seat cap 16 and the straight nozzle seat 3 are fastened together by six internal hex bolts.

[0033] The upper end of the upper valve body 4 is provided with a packing seal assembly located on the outer periphery of the valve core rod 1. As shown in Figure 6, the packing seal assembly includes, from bottom to top, a packing pad 17, a packing group 18, a packing sleeve 19, and a packing pressure plate 20. The packing pressure plate 20 is fixed to the upper end of the upper valve body 4 by a combination of fasteners consisting of two sets of symmetrically arranged fully threaded studs and type II hexagonal nuts to achieve axial sealing of the valve core rod 1.

[0034] For ease of manufacturing, as shown in Figure 4, a sealing ring 22 groove is provided on the outer periphery of the piston part 1201. A sealing element is installed in the sealing ring 22 groove, and the sealing element is elastically pressed against the inner wall of the straight-through nozzle seat 3. The sealing element includes a packing 21 and three sealing rings 22. The packing 21 is located inside the ring groove, and the three sealing rings 22 are arranged vertically close to each other on the outside of the packing 21. Compared with the traditional multi-seal ring 22 groove and corresponding multi-seal element, the single-seal structure is simpler and more convenient to process and requires less manufacturing work while ensuring the piston sealing effect. The sealing element adopts a combination of packing 21 and three sealing rings 22. The packing 21 is located on the inner side to provide a basic seal, and the multiple sealing rings 22 are arranged vertically close to each other on the outer side to further enhance the sealing effect. It can adapt to pressure changes under different working conditions and can maintain good sealing performance in high-pressure or pressure-fluctuating environments, thus extending the service life of the sealing element.

[0035] To connect the bracket 7 to the upper valve body 4, as shown in Figures 2 and 6, the lower end of the bracket 7 is provided with a connecting part 701. The connecting part 701 is sleeved on the stepped shaft at the upper end of the upper valve body 4, and a round nut 23 is provided on the upper part of the connecting part 701. The round nut 23 is fastened to the upper valve body 4 by engaging with the outer circumference thread at the upper end. This structure allows for convenient and quick installation and disassembly, ensuring a stable connection between the bracket 7 and the upper valve body assembly. It effectively supports the actuator, ensures the stability of the actuator during operation, and reduces the impact of vibration on the performance of the regulating valve.

[0036] To enhance reliability, bracket 7 is integrally cast, with multiple pre-drilled mounting holes 702 symmetrically arranged on its front and rear sides. The integral casting of bracket 7 results in high structural strength and stability. Compared to spliced ​​structures, integral casting reduces connection points, avoiding the risk of failure due to loose connections and improving the reliability of bracket 7. The symmetrical mounting holes 702 on the front and rear sides facilitate the installation of other expansion components.

[0037] When the nozzle 2 regulating valve is working, the fluid enters from the inlet composed of the seamless steel pipe 5 and the necked butt-welded flange 6, passes through the inner cavity of the upper valve body 4, the central flow channel hole of the valve seat 11, the central flow channel hole of the flange 8, and the inner cavity of the valve pipe 9, and then enters the inner cavity of the straight-through nozzle seat 3, and is finally ejected through the nozzle 2.

[0038] The actuator drives the valve stem to move downward. When the valve core 1 moves upward, the upper end of the valve core part 101 at its lower end abuts against the valve seat 11 to seal, blocking the central flow channel hole of the valve seat 11 and closing the vertical main flow channel. When the valve core 1 moves downward, the central flow channel hole opens, and the fluid can enter the lower flow channel through the valve seat 11.

[0039] The piston portion 1201 at the lower end of the piston rod 12 is located in the flow channel cavity of the straight-through nozzle seat 3 and moves synchronously with the valve core rod 1. When the piston portion 1201 moves upward, the number of nozzles 2 that are open gradually decreases, and the fluid flow rate decreases. When the piston portion 1201 moves upward to block all nozzles 2 from communicating with the flow channel cavity of the straight-through nozzle seat 3, the flow rate of nozzles 2 is zero. When the piston portion 1201 moves downward, the number of nozzles 2 that are open gradually increases, and the fluid flow rate increases. When the piston portion 1201 moves downward to connect all nozzles 2 with the flow channel cavity of the straight-through nozzle seat 3, the flow rate of nozzles 2 is at its maximum.

[0040] The valve stem is separated into a detachable valve core rod 1 and piston rod 12 via a flange connection structure and a detachable nozzle seat cap 16 at the bottom of the straight-through nozzle seat 3. This greatly improves the ease of disassembly of the regulating valve, facilitates maintenance, shortens maintenance time, and reduces maintenance costs.

[0041] Example 2

[0042] Unlike Embodiment 1 above, the actuator includes a pneumatic diaphragm actuator 24, an air filter pressure reducing valve 25, and an electric valve positioner 26. The air path of the air filter pressure reducing valve 25 is connected to the electric valve positioner 26, and the air path of the electric valve positioner 26 is connected to the pneumatic diaphragm actuator 24. The air filter pressure reducing valve 25 purifies the air source, ensuring gas cleanliness and preventing impurities from affecting actuator performance. The electric valve positioner 26 precisely controls the pneumatic diaphragm actuator 24, making the actuator's action more sensitive and accurate, thereby achieving precise drive of the regulating valve and improving flow control accuracy and response speed.

[0043] Example 3

[0044] Unlike embodiments one or two above, the actuator includes an adjustment mechanism mounted on the pneumatic stroke diaphragm actuator 24. The adjustment mechanism includes a handwheel and an adjustment screw or worm gear mechanism connected to the handwheel. The adjustment screw or worm gear mechanism is connected to the push rod 14 of the actuator. The adjustment mechanism is equipped with a dial or electronic display. When the handwheel is operated, the dial or electronic display shows the corresponding flow rate value. By rotating the handwheel to adjust the opening of the nozzle 2, the dial or electronic display shows the flow rate value in real time, allowing operators to intuitively understand the flow rate status, achieve precise adjustment, avoid manual estimation errors, and improve the accuracy and efficiency of flow control.

[0045] The above-described adjustable nozzle regulating valve, which is easy to disassemble, is a specific embodiment of this utility model, demonstrating its substantial features and progress. Based on actual usage needs, equivalent modifications in shape, structure, etc., can be made to it under the guidance of this utility model, all of which are within the scope of protection of this solution.

Claims

1. An easily detachable adjustable nozzle regulating valve, comprising an actuator, an upper valve body assembly, a lower valve body assembly, a valve stem, a valve seat, a straight-through nozzle seat, and a nozzle, wherein the actuator is connected to the upper valve body assembly, the lower valve body assembly is connected to the lower part of the upper valve body assembly, the straight-through nozzle seat is connected to the lower part of the lower valve body assembly, the nozzles are arranged from top to bottom on the side wall of the straight-through nozzle seat, the lower valve body assembly has a vertically penetrating flow channel cavity, the straight-through nozzle seat has a flow channel cavity closed at its lower end, and the valve seat is provided at the upper end of the flow channel cavity of the lower valve body assembly, characterized in that: The upper valve body assembly and the lower valve body assembly are connected by a flange connection structure using a combination of threaded screws and nuts. A nozzle seat cap is detachably connected to the bottom of the straight-through nozzle seat to seal the lower end of the inner cavity of the straight-through nozzle seat. The valve stem includes a valve core rod and a piston rod. The upper end of the valve core rod passes upward through the upper valve body assembly and is connected to the push rod of the actuator via an opening nut. The valve core rod passes downward through the flow channel cavity of the upper valve body assembly and the central flow channel hole of the valve seat. The lower end of the valve core rod has a valve core portion located below the valve seat. When the valve core rod moves upward until its upper valve core portion abuts against the valve seat, the vertical flow channel of the regulating valve closes. The upper end of the piston rod is detachably connected to the valve core portion, and the lower end of the piston rod has a piston portion. The opening of the nozzle is adjusted by the vertical movement of the piston portion within the flow channel cavity of the straight-through nozzle seat to control the fluid flow rate.

2. The adjustable nozzle regulating valve for easy disassembly according to claim 1, characterized in that: The actuator includes a pneumatic diaphragm actuator, an air filter pressure reducing valve, and an electric valve positioner. The pneumatic diaphragm actuator, air filter pressure reducing valve, and electric valve positioner are all connected to a bracket, which is fixed to the upper end of the upper valve body assembly. The air path of the air filter pressure reducing valve is connected to the electric valve positioner, and the air path of the electric valve positioner is connected to the pneumatic diaphragm actuator.

3. The adjustable nozzle regulating valve for easy disassembly according to claim 2, characterized in that: The pneumatic stroke diaphragm actuator is equipped with an adjustment mechanism, which includes a handwheel and an adjustment screw or worm gear mechanism connected to the handwheel. The adjustment screw or worm gear mechanism is connected to the push rod of the actuator. The adjustment mechanism is equipped with a dial or electronic display. When the adjustment screw is raised or lowered, the dial or electronic display shows the corresponding flow rate value.

4. The easily detachable adjustable nozzle regulating valve according to claim 1, characterized in that: The upper end of the piston rod is engaged with the valve core through a vertical thread and is fixed by a horizontally inserted heavy-duty cylindrical pin.

5. A dismountable adjustable nozzle regulator valve according to claim 1, characterized in that: The piston part is provided with a sealing ring groove on its outer periphery, and a sealing element is provided in the sealing ring groove. The sealing element is elastically pressed against the inner wall of the straight-through nozzle seat.

6. The easily detachable adjustable nozzle regulating valve according to claim 5, characterized in that: The sealing element includes a packing gland and multiple sealing rings. The packing gland is located at the bottom inner side of the ring groove, and the multiple sealing rings are vertically stacked on the outer side of the packing gland.

7. A dismountable adjustable nozzle regulator valve according to claim 2, characterized in that: The lower end of the bracket is provided with a connecting part, which is sleeved on the stepped shaft at the upper end of the upper valve body assembly. A round nut is provided on the upper part of the connecting part, and the round nut is screwed into the upper end of the upper valve body assembly through thread engagement.

8. The easily detachable adjustable nozzle regulating valve according to claim 7, characterized in that: The bracket is integrally cast, and multiple mounting holes are symmetrically provided on the front and rear sides of the bracket.

9. The easily detachable adjustable nozzle regulating valve according to claim 1, characterized in that: A metal spiral wound gasket is provided between the upper valve body assembly and the lower valve body assembly; a metal spiral wound gasket is provided between the nozzle seat cap and the straight-through nozzle seat; and a packing seal assembly is provided at the upper end of the upper valve body assembly at the outer periphery of the valve core rod.

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