CN218992485U

CN218992485U - Prevent urea high pressure governing valve of slag charge jamming case motion

Info

Publication number: CN218992485U
Application number: CN202023285126.8U
Authority: CN
Inventors: 雷志华; 刘建斌; 蒋冬梅
Original assignee: Chengdu Sijie Chemical Machinery Co ltd
Current assignee: Chengdu Sijie Chemical Machinery Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2023-05-09
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a urea high-pressure regulating valve capable of preventing slag from clamping a valve core, belongs to the technical field of regulating valves, and particularly relates to the technical field of urea high-pressure regulating valves, so as to solve the problems that the existing urea high-pressure regulating valve is blocked due to the fact that a flow outlet hole is smaller and bigger particles cannot pass through, and the valve core cannot move up and down when the valve core is clamped seriously, so that the regulating valve is out of function. Through the arrangement of the lateral window, namely a window runner, the probability of the occurrence of clamping stagnation of the valve core and the valve cage seat and damage to the sealing surface is reduced.

Description

Prevent urea high pressure governing valve of slag charge jamming case motion

Technical Field

The utility model discloses a urea high-pressure regulating valve capable of preventing a slag material clamping valve core from moving, belongs to the technical field of regulating valves, and particularly relates to the technical field of urea high-pressure regulating valves.

Background

The traditional urea high-pressure regulating valve is usually made into a multi-stage throttling cage type because the pressure difference is as large as 19.7MPa, fluid is uniformly drilled on the valve cage to realize flow equalization and pressure reduction outflow, so that the service life of the valve is prolonged, and because the cage type opening is smaller, the device is not blocked in a urea body at the drilling position because of a filtering device, so that a flow hole is blocked, and when the valve core is seriously blocked, the valve core cannot move up and down, so that the regulating valve is disabled.

The application number is as follows: the utility model discloses a special high-pressure regulating valve for urea, which comprises a main valve body, a lower valve body and a valve core connected with a valve rod into a whole, wherein one side of the main valve body is provided with an outflow channel, the lower valve body is provided with an inflow channel, the special high-pressure regulating valve is characterized in that a valve cage is fixedly arranged in the main valve body, the valve core extends into the valve cage through an opening at one end of the valve cage, the end face of the opening at the other end of the valve cage is tightly contacted with the end face of the outlet end of the inflow channel on the lower valve body to form a sealing pair, the inner wall of the valve cage is provided with an inwardly contracted neck, the neck forms a valve port matched with the valve core, a gap is formed between the inner wall of the valve cage and the side wall of the valve core to form an inner through cavity, the valve port is communicated with the inner through cavity, a gap is formed between the outer wall of the valve cage and the main valve body to form an outer through cavity, the outflow channel is communicated with the outer through cavity, and the side wall of the valve cage is provided with at least two outflow holes for enabling the inner outflow cavity to be communicated with the outer through cavity.

The above patents all suffer from the drawbacks: the holes are smaller, larger particles cannot pass through, so that the flow holes are blocked, and the valve core is blocked when the valve core is seriously blocked, so that the valve core cannot move up and down, and the regulating valve is disabled.

Disclosure of Invention

The utility model aims at: the urea high-pressure regulating valve can prevent the slag material from clamping the valve core, so that the problems that the existing urea high-pressure regulating valve is small in outflow hole and large in particle size and cannot pass through, so that the outflow hole is blocked, the valve rod core is clamped when the flow hole is seriously blocked, the valve core cannot move up and down, and the regulating valve is disabled are solved.

The technical scheme adopted by the utility model is as follows:

the utility model provides a prevent urea high pressure control valve of slag charge clamping stagnation case motion, includes the valve body subassembly, the valve pocket has been seted up to the inside valve pocket of valve body subassembly, be provided with valve cage seat and case in the valve pocket, valve cage seat interior shape with case matched with interior overflow chamber, valve cage seat's outer wall with form outer overflow chamber between the valve body, be provided with a plurality of messenger on the lateral wall of valve cage seat interior overflow chamber with outer overflow chamber is linked together's window runner.

Among the technical scheme of this application, fluid gets into from interior overflow intracavity, loops through the window runner, and outflow behind outer overflow chamber and the valve pocket flows out, through the setting of window runner, the direct follow window runner outflow of ability of slightly large granule, through the setting of window runner promptly that the side direction is windowed, has reduced case and valve cage seat clamping stagnation and damage sealed face's probability incident's emergence.

Further, 2, 4 or 6 window runners are arranged and uniformly distributed on the periphery of the valve cage seat. Preferably, the window runners are provided with 4, and the four window runners are positioned in the same horizontal plane of the valve cage seat, so that slightly larger particles uniformly flow out.

Further, the valve body assembly comprises an upper valve body and a lower valve body connected to the lower end of the upper valve body, the upper valve body is provided with an outflow channel communicated with the valve cavity, and the lower valve body is provided with an inflow channel communicated with the window flow channel. The lower valve body and the inflow channel are the prior art.

Further, the included angle between the inflow channel and the outflow channel is greater than 90 degrees. The outflow channel is larger than 90 degrees, so that the medium is smoother when flowing, and slag is prevented from accumulating in dead corners.

Further, a fixing plate is arranged on the side face of the bottom of the valve cage seat, and the fixing plate is fixed on the upper valve body through a connecting piece. The connecting piece can be the bolt, through the setting of fixed plate and bolt, drops when preventing the installation.

Further, the upper end of the valve core is provided with a valve rod, a pressing plate is further arranged above the upper valve body, and the upper end of the valve rod sequentially penetrates through the upper valve body and the pressing plate. The upper end of the valve rod penetrates through the pressing plate, so that the valve core is kept to move in the vertical direction when moving up and down in the valve cage seat.

Furthermore, a sealing filler is sleeved between the valve rod and the upper valve body, a gland is arranged at the upper end of the sealing filler, and the gland is positioned between the sealing filler and the pressure plate. Through establishing sealing filler, avoid the valve rod to reciprocate the in-process of removing from top to bottom, the valve rod directly takes place wearing and tearing with last valve body inner wall, sealing filler's upper end still is provided with the gland, through the gland, guarantees sealing filler fixed setting between valve rod and last valve body inner wall, avoids fixed cover to take place relative movement at the valve rod outer wall.

Further, the lower end of the valve cage seat is connected with a pipeline. The valve cage seat has the advantages that the lower valve body is not required to be arranged under the structure, the lower end of the valve cage seat is directly communicated with a pipeline (conventional in the field), the structure is compact, the volume is small, and the processing is convenient.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

1. according to the utility model, fluid enters from the inner overflow cavity, flows out after sequentially passing through the window runner, the outer overflow cavity and the valve cavity, and can flow out from the window runner directly by the arrangement of the window runner, and the probability of the clamping stagnation of the valve core and the valve cage seat and the damage of the sealing surface is reduced by the arrangement of the window runner and the lateral window;

2. the number of the window flow passages is 4, and the four window flow passages are positioned in the same horizontal plane of the valve cage seat, so that slightly larger particles uniformly flow out;

3. the outflow channel is larger than 90 degrees, so that the medium is smoother when flowing, and slag is prevented from accumulating in dead corners;

4. the connecting piece can be a bolt, and the falling off is prevented during installation through the arrangement of the fixing plate and the bolt;

5. the upper end of the valve rod penetrates through the pressing plate, so that the valve core is kept to move in the vertical direction when moving up and down in the valve cage seat;

6. by arranging the sealing filler, the valve rod is prevented from being worn directly with the inner wall of the upper valve body in the process of moving up and down, and the upper end of the sealing filler is also provided with a gland, so that the sealing filler is ensured to be fixedly arranged between the valve rod and the inner wall of the upper valve body through the gland, and the fixed sleeve is prevented from being relatively moved on the outer wall of the valve rod;

7. the lower end of the valve cage seat is directly communicated with the pipeline, and the valve cage seat has compact structure, small volume and convenient processing

Drawings

FIG. 1 is a schematic diagram of a urea high pressure regulating valve for preventing slag from clamping a valve core;

FIG. 2 is a schematic view of the valve cage of FIG. 1;

FIG. 3 is a cross-sectional view of B-B of FIG. 1;

fig. 4 is an enlarged view of a in fig. 1.

The marks in the figure: the valve comprises a 2-upper valve body, a 3-window flow passage, a 4-valve cavity, a 5-valve cage seat, a 6-valve rod, a 7-pressing plate, an 8-pressing cover, a 9-sealing filler, a 10-valve core, an 11-outflow passage, a 12-inner flow passage, a 13-outer flow passage, a 14-connecting piece and a 15-fixing plate.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Example 1

As shown in fig. 1-3, the urea high-pressure regulating valve capable of preventing slag from being blocked comprises a valve body assembly, wherein a valve cavity 4 is formed in the valve body assembly, a valve cage seat 5 and a valve core 10 are arranged in the valve cavity 4, an inner overflow cavity 12 matched with the valve core 10 is formed in the valve cage seat 5, an outer overflow cavity 13 is formed between the outer wall of the valve cage seat 5 and the valve body, and a plurality of window runners 3 which enable the inner overflow cavity 12 to be communicated with the outer overflow cavity 13 are arranged on the side wall of the valve cage seat 5.

Among the technical scheme of this application, fluid gets into from interior overflow chamber 12, flows through window runner 3 in proper order, and outer overflow chamber 13 and valve pocket 4 back flow, through window runner 3's setting, the direct follow window runner 3 of ability of slightly big granule flows, through the setting of side direction windowing window runner 3 promptly, has reduced case 10 and valve cage seat 5 jamming and damage sealed face's probability incident's emergence.

Example 2

As shown in fig. 1, on the basis of embodiment 1, the number of the window runners 3 is 2, 4 or 6, and the window runners 3 are uniformly distributed on the outer periphery of the valve cage seat 5. Preferably, the number of the window runners 3 is 4, and the four window runners 3 are positioned in the same horizontal plane of the valve cage seat 5, so that slightly larger particles uniformly flow out.

Example 3

As shown in fig. 1 and 3, on the basis of embodiment 1, the valve body assembly includes an upper valve body 2 and a lower valve body connected to the lower end of the upper valve body 2, the upper valve body 2 is provided with an outflow channel 11 which is mutually communicated with the valve cavity 4, and the lower valve body is provided with an inflow channel which is mutually communicated with the window flow channel 3. The lower valve body and the inflow channel are the prior art.

Example 4

As shown in fig. 1, in the embodiment 1, the included angle between the inlet channel and the outlet channel 11 is greater than 90 degrees. The outflow channel 11 is larger than 90 degrees, so that the medium is smoother when flowing, and slag is prevented from accumulating in dead corners.

Example 5

As shown in fig. 1 and 4, on the basis of embodiment 1, the bottom side surface of the cage seat 5 is provided with a fixing plate 15, and the fixing plate 15 is fixed to the upper valve body 2 by a connecting member 14. The connecting member 14 may be a bolt, and the fixing plate 15 and the bolt are provided to prevent the connecting member from falling off during installation.

Example 6

As shown in fig. 1, on the basis of embodiment 1, the upper end of the valve core 10 is provided with a valve rod 6, a pressing plate 7 is further provided above the upper valve body 2, and the upper end of the valve rod 6 sequentially penetrates through the upper valve body 2 and the pressing plate 7. The upper end of the valve rod 6 penetrates through the pressing plate 7, so that the valve core 10 is kept moving in the vertical direction when moving up and down in the valve cage seat 5.

Example 7

As shown in fig. 1, on the basis of embodiment 1, a sealing packing 9 is sleeved between the valve rod 6 and the upper valve body 2, a gland 8 is arranged at the upper end of the sealing packing 9, and the gland 8 is located between the sealing packing 9 and the pressure plate 7. By arranging the sealing filler 9, the valve rod 6 is prevented from being worn directly with the inner wall of the upper valve body 2 in the process of moving up and down, the upper end of the sealing filler 9 is also provided with a gland 8, and the sealing filler 9 is ensured to be fixedly arranged between the valve rod 6 and the inner wall of the upper valve body 2 through the gland 8, so that the fixed sleeve is prevented from moving relatively on the outer wall of the valve rod 6.

Example 8

As shown in fig. 1, in the embodiment 1, a pipe is connected to the lower end of the cage seat 5. The lower valve body is not required to be arranged under the structure, so that the lower end of the valve cage seat 5 is directly communicated with a pipeline (conventional in the field), and the valve cage seat has the advantages of compact structure, small volume and convenience in processing.

The arrows in fig. 3 point in the direction of flow of the fluid.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A prevent urea high pressure governing valve of slag charge jamming case motion, its characterized in that: including the valve body subassembly, valve pocket (4) have been seted up to valve body subassembly inside, be provided with valve cage seat (5) and case (10) in valve pocket (4), shape in valve cage seat (5) with case (10) matched with interior overflow chamber (12), the outer wall of valve cage seat (5) with form outer overflow chamber (13) between the valve body, be provided with a plurality of messenger on the lateral wall of valve cage seat (5) interior overflow chamber (12) with window runner (3) that outer overflow chamber (13) are linked together.

2. The urea high-pressure regulating valve for preventing slag from being stuck and moving according to claim 1, wherein the urea high-pressure regulating valve is characterized in that: the number of the window runners (3) is 2, 4 or 6, and the window runners (3) are uniformly distributed on the periphery of the valve cage seat (5).

3. The urea high-pressure regulating valve for preventing slag from being stuck and moving according to claim 1, wherein the urea high-pressure regulating valve is characterized in that: the valve body assembly comprises an upper valve body (2) and a lower valve body connected to the lower end of the upper valve body (2), wherein the upper valve body (2) is provided with an outflow channel (11) communicated with the valve cavity (4), and the lower valve body is provided with an inflow channel communicated with the window flow channel (3).

4. A urea high pressure regulator valve for preventing slag from seizing valve core movement as set forth in claim 3, wherein: the included angle between the inflow channel and the outflow channel (11) is larger than 90 degrees.

5. A urea high pressure regulator valve for preventing slag from seizing valve core movement as set forth in claim 3, wherein: the side surface of the bottom of the valve cage seat (5) is provided with a fixing plate (15), and the fixing plate (15) is fixed on the upper valve body (2) through a connecting piece (14).

6. A urea high pressure regulator valve for preventing slag from seizing valve core movement as set forth in claim 3, wherein: the upper end of case (10) is provided with valve rod (6), it still is provided with clamp plate (7) to go up valve body (2) top, the upper end of valve rod (6) runs through in proper order go up valve body (2) and clamp plate (7).

7. The urea high-pressure regulating valve for preventing slag from being stuck with valve core movement according to claim 6, wherein the urea high-pressure regulating valve is characterized in that: sealing filler (9) is sleeved between the valve rod (6) and the upper valve body (2), a gland (8) is arranged at the upper end of the sealing filler (9), and the gland (8) is located between the sealing filler (9) and the pressing plate (7).

8. The urea high-pressure regulating valve for preventing slag from being stuck and moving according to claim 1, wherein the urea high-pressure regulating valve is characterized in that: the lower end of the valve cage seat (5) is connected with a pipeline.