A valve body structure for converting a flow-limiting orifice plate of a styrene plant pump into a regulating valve

Abstract

The present invention relates to the technical field related to styrene production, specifically to a valve body structure of a styrene device machine pump flow limiting orifice plate converted into a regulating valve, the valve body structure of the styrene device machine pump flow limiting orifice plate converted into a regulating valve includes a valve body, a flow limiting tube, a rear end of the valve body is provided with a liquid outflow port, the rear end of the flow limiting tube is connected to the liquid inlet port of the valve body through a connecting tube, and the front end of the flow limiting tube is a liquid inflow port, an installation groove is provided on the inner side wall of the flow limiting tube, three installation grooves are provided with equal circumference, and flow limiting components are installed in the installation grooves; by arranging the flow limiting tube at the front side end of the valve body, and by opening the installation groove on the inner side wall of the flow limiting tube, and by arranging the flow limiting component in the installation groove, the liquid flow rate flowing to the valve body is controlled by the action of the flow limiting component, thereby avoiding the sudden stop affecting the valve body and the machine pump and other structures.

Description

Technical Field

[0001] The present invention relates to the technical field related to styrene production, in particular to a valve body structure of a regulating valve converted from a flow-limiting orifice plate of a machine pump of a styrene device. Background Art

[0002] Styrene is an organic compound formed by replacing one hydrogen atom of ethylene with benzene. Its molecular formula is C8H8. The electrons of the vinyl group are conjugated with the benzene ring. Styrene is insoluble in water but soluble in ethanol and ether. Upon exposure to air, it gradually polymerizes and oxidizes. Industrially, it is an important monomer for synthetic resins, ion exchange resins, and synthetic rubber. Conventional styrene production equipment uses a flow-restricting orifice plate to limit reflux. This restricts the flow rate of the pump during sudden shutdowns, impacting production efficiency due to the frequent adjustments required during production starts and stops. To address these issues, the present invention proposes a valve body structure that replaces the flow-restricting orifice plate in the pump of a styrene plant with a regulating valve to address these issues. Summary of the Invention

[0003] The object of the present invention is to provide a valve body structure of a regulating valve converted from a flow limiting orifice plate of a styrene device pump to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a valve body structure for converting a flow-limiting orifice plate of a styrene device pump into a regulating valve, the valve body structure for converting a flow-limiting orifice plate of a styrene device pump into a regulating valve comprising:

[0005] a valve body, wherein a liquid outflow outlet is provided at a rear end of the valve body;

[0006] A flow limiting tube, wherein the rear end of the flow limiting tube is connected to the liquid inlet port of the valve body through a connecting tube, and the front end of the flow limiting tube is a liquid inlet;

[0007] The inner side wall of the flow limiting tube is provided with mounting grooves, wherein three mounting grooves are provided with equal circumferences, and flow limiting components are installed in each of the mounting grooves.

[0008] Preferably, the flow limiting assembly is composed of an outer shell, a deformable body, an inner shell and a mounting seat. The mounting seat is a section of a circular tube, and a limiting seat is integrally formed on the inner side wall of the tube body, and a reset assembly and a piston rod are provided in the tube cavity of the mounting seat.

[0009] Preferably, the outer shell, the deformable body and the inner shell are all circular tube structures, and the outer diameter of the outer shell matches the diameter of the installation groove, and the outer shell is movably arranged in the installation groove.

[0010] Preferably, a drainage groove is provided on the outer surface of the outer shell, and the drainage groove is a spiral notch structure with a rectangular cross-section, and a first through hole is provided through the side wall of the outer shell, and the first through hole corresponds to the position of the drainage groove.

[0011] Preferably, the deformable body is an elastic rubber tube, and the outer side wall of the tube body is fixedly glued to the inner side wall of the outer shell.

[0012] Preferably, the inner shell is a circular tube structure, and its outer side wall is fixedly glued to the inner side wall of the deformation body, and a second through hole is opened on the side wall of the inner shell, the second through hole is arranged corresponding to the first through hole, and a gap is left between the inner side wall of the inner shell and the outer side wall of the mounting seat, and the inner side wall of the inner shell is connected to the outer side wall of the mounting seat by a connecting rod, and the connecting rods are evenly arranged in multiple groups, and the connecting rods and the second through holes are staggered.

[0013] Preferably, the reset assembly is composed of a first connecting plate, a second connecting plate, a first telescopic tube, a second telescopic tube, a first reset spring and a second reset spring. The first connecting plate and the first telescopic tube are integrally formed, and the second connecting plate and the second telescopic tube are integrally formed. The second telescopic tube is movably arranged in the inner cavity of the first telescopic tube, and the first reset spring is movably sleeved on the first telescopic tube and the second telescopic tube. The second reset spring is arranged in the inner cavity of the first telescopic tube and the second telescopic tube, and both ends of the first reset spring and the second reset spring are respectively connected to the first connecting plate and the second connecting plate.

[0014] Preferably, the first connecting plate and the second connecting plate are both provided with a first circular hole, and the first connecting plate and the limit seat, the limit seat is provided with a second circular hole, the second connecting plate is fixedly connected to the piston rod, and the other end of the piston rod is fixedly connected to the bottom of the mounting groove.

[0015] Preferably, when the reset component is in the reset state, its current limiting component is completely retracted into the installation groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By arranging a flow-limiting tube at the front end of the valve body, opening a mounting groove on the inner side wall of the flow-limiting tube, and arranging a flow-limiting component in the mounting groove, the flow rate of the liquid flowing into the valve body can be controlled by the flow-limiting component, thereby preventing the valve body and the pump and other structures from being affected by sudden stops;

[0018] 2. The flow-limiting assembly is configured to be composed of an outer shell, a deformable body, an inner shell, and a mounting seat. A first through-hole is provided on the side wall of the outer shell, and a second through-hole is provided on the side wall of the inner shell. A reset assembly and a piston rod are installed on the mounting seat. The hydraulic pressure inside the flow-limiting tube squeezes the deformable body, thereby causing a change in the air pressure inside the inner shell. The change in air pressure drives the piston rod to move, thereby ejecting the flow-limiting assembly, thereby changing the inner cavity size of the flow-limiting tube. The inner diameter of the flow-limiting tube can be adaptively adjusted according to the hydraulic pressure value inside the flow-limiting tube, thereby better protecting the valve body, the machine pump, and other structures.

[0019] 3. By configuring the reset assembly to be composed of a first connecting plate, a second connecting plate, a first telescopic tube, a second telescopic tube, a first reset spring, and a second reset spring, the combined action of the first reset spring and the second reset spring effectively ensures that the reset assembly can be reset stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 A half-sectional view of the flow limiting tube of the present invention;

[0022] Figure 3 for Figure 2 A schematic diagram of the structure at center A;

[0023] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0024] Figure 5 This is a schematic diagram of the outer shell structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the inner shell structure of the present invention.

[0026] In the figure: valve body 1, flow limiting tube 2, liquid inlet 3, connecting tube 4, liquid outlet 5, mounting groove 6, flow limiting assembly 7, outer shell 8, deformation body 9, inner shell 10, mounting seat 11, limit seat 12, reset assembly 13, piston rod 14, drainage groove 15, first through hole 16, second through hole 17, connecting rod 18, first connecting plate 19, second connecting plate 20, first telescopic tube 21, second telescopic tube 22, first return spring 23, second return spring 24, first circular hole 25. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0028] See also Figure 1-6 The present invention provides a technical solution: a valve body structure of a styrene device pump flow limiting orifice plate to change the regulating valve, the valve body structure of the styrene device pump flow limiting orifice plate to change the regulating valve includes:

[0029] The valve body 1 has a liquid outlet 5 at its rear end;

[0030] A flow limiting tube 2, the rear end of which is connected to the liquid inlet port of the valve body 1 through a connecting tube 4, and the front end of which is a liquid inlet 3;

[0031] An installation groove 6 is provided on the inner side wall of the flow limiting tube 2. Three installation grooves 6 are provided with equal circumferences, and a flow limiting component 7 is installed in each of the installation grooves 6. By arranging the flow limiting tube 2 at the front end of the valve body 1, and by opening the installation groove 6 on the inner side wall of the flow limiting tube 2, and by arranging the flow limiting component 7 in the installation groove 6, the flow rate of the liquid flowing into the valve body 1 can be controlled by the action of the flow limiting component 7, thereby avoiding the impact of sudden stop on the valve body, the machine pump and other structures.

[0032] The flow limiting assembly 7 is composed of an outer shell 8, a deformable body 9, an inner shell 10 and a mounting seat 11. The mounting seat 11 is a section of a circular tube, and a limited seat 12 is integrally formed on the inner side wall of the tube body. A reset assembly 13 and a piston rod 14 are provided in the tube cavity of the mounting seat 11. By setting the flow limiting assembly 7 to be composed of an outer shell 8, a deformable body 9, an inner shell 10 and a mounting seat 11, and opening a first through hole 16 on the side wall of the outer shell 8, and opening a second through hole 17 on the side wall of the inner shell 10, The reset assembly 13 and the piston rod 14 are installed on the mounting seat 11, so that the hydraulic pressure inside the flow-limiting tube 2 squeezes the deformable body 9, thereby causing the air pressure inside the inner housing 10 to change. The change in air pressure pushes the piston rod 14 to move, thereby ejecting the flow-limiting assembly 7, thereby changing the inner cavity size of the flow-limiting tube 2, so that the inner diameter of the flow-limiting tube 2 can be adaptively adjusted according to the hydraulic pressure value inside the flow-limiting tube 2, thereby better protecting the valve body, the machine pump and other structures;

[0033] The outer shell 8, the deforming body 9, and the inner shell 10 are all circular tube structures, and the outer diameter of the outer shell 8 matches the diameter of the mounting groove 6, and the outer shell 8 is movably arranged in the mounting groove 6;

[0034] A drainage groove 15 is provided on the outer surface of the outer shell 8. The drainage groove 15 is a spiral notch structure with a rectangular cross section. A first through hole 16 is provided through the side wall of the outer shell 8. The first through hole 16 corresponds to the position of the drainage groove 15.

[0035] The deformation body 9 is an elastic rubber tube, and the outer wall of the tube body is fixedly glued to the inner wall of the outer shell 8;

[0036] The inner shell 10 is a circular tube structure, and its outer side wall is fixedly glued to the inner side wall of the deformation body 9, and a second through hole 17 is opened on the side wall of the inner shell 10. The second through hole 17 and the first through hole 16 are arranged correspondingly, and a gap is left between the inner side wall of the inner shell 10 and the outer side wall of the mounting seat 11. The inner side wall of the inner shell 10 and the outer side wall of the mounting seat 11 are connected by a connecting rod 18, and the connecting rod 18 is evenly provided in multiple groups, and the connecting rod 18 and the second through hole 17 are staggered.

[0037] The reset assembly 13 is composed of a first connecting plate 19, a second connecting plate 20, a first telescopic tube 21, a second telescopic tube 22, a first return spring 23, and a second return spring 24. The first connecting plate 19 and the first telescopic tube 21 are integrally formed, and the second connecting plate 20 and the second telescopic tube 22 are integrally formed. The second telescopic tube 22 is movably disposed within the inner cavity of the first telescopic tube 21, and the first return spring 23 is movably sleeved on the first and second telescopic tubes 21, 22. The second return spring 24 is disposed within the inner cavities of the first and second telescopic tubes 21, 22, and both ends of the first and second return springs 23, 24 are connected to the first connecting plate 19 and the second connecting plate 20, respectively.

[0038] The first connecting plate 19 and the second connecting plate 20 are both provided with a first circular hole 25, and the first connecting plate 19 is connected to the limit seat 12, and the limit seat 12 is provided with a second circular hole. The second connecting plate 20 is fixedly connected to the piston rod 14, and the other end of the piston rod 14 is fixedly connected to the bottom of the mounting groove 6;

[0039] When the reset assembly 13 is in the reset state, the current limiting assembly 7 is completely retracted into the mounting groove 6;

[0040] Working principle: By arranging a flow-limiting tube 2 at the front end of the valve body 1, and by opening a mounting groove 6 on the inner side wall of the flow-limiting tube 2, and by arranging a flow-limiting component 7 in the mounting groove 6, the flow rate of the liquid flowing to the valve body 1 is controlled by the function of the flow-limiting component 7, thereby avoiding the impact of sudden stop on the valve body and the pump and other structures, and by arranging the flow-limiting component 7 to be composed of an outer shell 8, a deformable body 9, an inner shell 10 and a mounting seat 11, and by opening a first through hole 16 on the side wall of the outer shell 8, and opening a second through hole 17 on the side wall of the inner shell 10, and by installing a reset component 13 and a piston rod 14 on the mounting seat 11, the deformable body 9 is squeezed by the hydraulic pressure inside the flow-limiting tube 2, This causes a change in the air pressure inside the inner shell 10, which in turn pushes the piston rod 14 to move through the air pressure change, thereby pushing out the flow limiting component 7, thereby changing the inner cavity size of the flow limiting tube 2, so that the inner diameter of the flow limiting tube 2 can be adaptively adjusted according to the hydraulic pressure value inside the flow limiting tube 2, thereby better protecting the valve body and machine pump structures, and by setting the reset component 13 to be composed of a first connecting plate 19, a second connecting plate 20, a first telescopic tube 21, a second telescopic tube 22, a first reset spring 23 and a second reset spring 24, the combined action of the first reset spring 23 and the second reset spring 24 effectively ensures that the reset component 13 can be stably reset.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A valve body structure for a styrene plant pump flow limiting orifice plate to replace a regulating valve, characterized by: The valve body structure of the styrene device pump flow limiting orifice plate modified into a regulating valve includes: A valve body (1), wherein a liquid outflow outlet (5) is provided at a rear end of the valve body (1); A flow limiting tube (2), wherein the rear end of the flow limiting tube (2) is connected to the liquid inlet port of the valve body (1) via a connecting tube (4), and the front end of the flow limiting tube (2) is a liquid inlet (3); The inner side wall of the flow limiting tube (2) is provided with a mounting groove (6), and three mounting grooves (6) are provided on an equal circumference, and a flow limiting component (7) is installed in each of the mounting grooves (6); The flow limiting assembly (7) is composed of an outer shell (8), a deformation body (9), an inner shell (10) and a mounting seat (11); the mounting seat (11) is a section of a circular tube, and a limiting seat (12) is integrally formed on the inner side wall of the tube body, and a reset assembly (13) and a piston rod (14) are provided in the tube cavity of the mounting seat (11); The outer shell (8), the deformable body (9), and the inner shell (10) are all circular tube structures, and the outer diameter of the outer shell (8) matches the diameter of the mounting groove (6), and the outer shell (8) is movably arranged in the mounting groove (6); A drainage groove (15) is provided on the outer surface of the outer shell (8), and the drainage groove (15) is a spiral notch structure with a rectangular cross-section. A first through hole (16) is provided through the side wall of the outer shell (8), and the position of the first through hole (16) corresponds to that of the drainage groove (15).

2. The valve body structure of a styrene device pump flow limiting orifice plate modified into a regulating valve according to claim 1, characterized in that: The deformation body (9) is an elastic rubber tube, and the outer side wall of the tube body is fixedly glued to the inner side wall of the outer shell (8).

3. The valve body structure of a styrene plant pump flow limiting orifice plate converted into a regulating valve according to claim 2, characterized in that: The inner shell (10) is a circular tube structure, and its outer side wall is fixedly glued to the inner side wall of the deformation body (9), and a second through hole (17) is opened on the side wall of the inner shell (10), and the second through hole (17) and the first through hole (16) are arranged correspondingly, and a gap is left between the inner side wall of the inner shell (10) and the outer side wall of the mounting seat (11), and the inner side wall of the inner shell (10) and the outer side wall of the mounting seat (11) are connected by a connecting rod (18), and the connecting rod (18) is evenly arranged in multiple groups, and the connecting rod (18) and the second through hole (17) are staggered.

4. The valve body structure of a regulating valve modified from a flow limiting orifice plate of a styrene plant pump according to claim 3, characterized in that: The reset assembly (13) is composed of a first connecting plate (19), a second connecting plate (20), a first telescopic tube (21), a second telescopic tube (22), a first reset spring (23) and a second reset spring (24), wherein the first connecting plate (19) and the first telescopic tube (21) are integrally formed, the second connecting plate (20) and the second telescopic tube (22) are integrally formed, and the second telescopic tube (22) is movably arranged in the inner cavity of the first telescopic tube (21), and the first reset spring (23) is movably sleeved on the first telescopic tube (21) and the second telescopic tube (22), and the second reset spring (24) is arranged in the inner cavities of the first telescopic tube (21) and the second telescopic tube (22), and both ends of the first reset spring (23) and the second reset spring (24) are respectively connected to the first connecting plate (19) and the second connecting plate (20).

5. The valve body structure of a flow limiting orifice plate for a styrene plant pump converted into a regulating valve according to claim 4, characterized in that: The first connecting plate (19) and the second connecting plate (20) are both provided with a first circular hole (25), and the first connecting plate (19) and the limiting seat (12) are connected, and the limiting seat (12) is provided with a second circular hole, the second connecting plate (20) is fixedly connected to the piston rod (14), and the other end of the piston rod (14) is fixedly connected to the bottom of the mounting groove (6).

6. The valve body structure of a regulating valve modified from a flow limiting orifice plate of a styrene plant pump according to claim 5, characterized in that: When the reset component (13) is in the reset state, its current limiting component (7) is completely retracted into the installation groove (6).

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