CN215214878U

CN215214878U - Sealing device and valve body system

Info

Publication number: CN215214878U
Application number: CN202120055501.5U
Authority: CN
Inventors: 樊文岷; 张飞; 汤龙刚; 王刚; 李卫敏; 寇晓康
Original assignee: Functional Resin Engineering Technology Co; Sunresin New Materials Co ltd Gaoling; Sunresin New Materials Co ltd Xi'an
Current assignee: Functional Resin Engineering Technology Co; Sunresin New Materials Co ltd Gaoling; Sunresin New Materials Co ltd Xi'an
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-12-17
Anticipated expiration: 2031-01-08

Abstract

The utility model discloses a sealing device and valve body system, wherein, sealing device includes: a driving member, a sealing body and an expansion member. The sealing body is suitable for being installed on the shell body and provided with an installation hole, the installation hole is suitable for being matched with the pipe body to be sealed, and the sealing body is provided with an installation cavity; the expansion piece is arranged in the mounting cavity and is provided with an expansion cavity, and the driving piece is communicated with the expansion cavity; the expansion piece is driven by the driving piece, the area of the expansion cavity is expanded to drive the sealing body to deform towards one side of the pipe body to be sealed along the radial direction of the mounting hole, the sealing pressure of the sealing body on the pipe body to be sealed is also increased, and no leakage is generated at the connecting position of a process pipeline in the multi-way valve body; in addition, when the valve body structure need switch the rotation, the inflation piece does not expand, only seals the pipeline through sealed body, reduces the rotational friction resistance of sealed department, avoids the rotary valve to appear rotating the difficult problem.

Description

Sealing device and valve body system

Technical Field

The utility model relates to a valve body seals technical field, concretely relates to sealing device and valve body system.

Background

Currently, the industrial devices for continuous ion exchange and adsorption are most commonly three types, namely a carousel system, a valve array system and a multi-way valve device. The turntable system needs the turntable to drive the resin column filled with resin to integrally rotate, has the defects that the system production with larger mass cannot be realized, and the manufacturing cost of the core part of the turntable is high and the overhauling is difficult, and cannot be widely used in various application fields. Although the valve array system can simulate the movement of resin through multi-frequency switching of the valves under the condition that the resin column is not moved so as to realize continuous operation, a large number of valves are required for a system with a complex process, and the requirements on the control accuracy and the safety of the system are very high. The multi-way valve device drives the rotating disk in the fixed shell through the motor, the feeding pipe and the discharging pipe are communicated through a pipeline inside the rotating valve core, and a complete continuous technological process is realized without the movement of resin and a resin column. The multi-way valve device not only avoids the complexity and bulkiness of a rotating disc type system, but also avoids a plurality of hidden dangers caused by high-frequency switching of valves of a valve array type system, and is widely accepted and applied in the market.

In the conventional multi-way valve device, because the rotary valve realizes the sealing performance in the rotating process, a sealing gasket is required to generate sealing force by virtue of elasticity and pretightening force of the sealing gasket so as to realize the sealing performance. However, when the expansion piece is used, if the sealing force is large, the rotary valve is easy to rotate due to overlarge resistance, but if the sealing force is too small, the risks of leakage and internal material mixing exist in the valve body pipeline; therefore, the existing expansion piece structure cannot be applied to a multi-way valve device, and the problems of medium leakage in a pipeline or difficulty in rotating the valve body due to overlarge resistance are easily caused.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model discloses the technical problem that will solve lies in the unable multiple unit valve device that is applicable to of inflation spare structure among the prior art, appears the medium leakage in the pipeline easily or because the rotatory difficult problem of the too big valve body of resistance.

Therefore, the utility model provides a sealing device, include:

a drive member;

the sealing body is suitable for being installed on the shell body and provided with an installation hole, the installation hole is suitable for being matched with a pipe body to be sealed, and the sealing body is provided with an installation cavity;

an expansion member mounted within the mounting cavity, the expansion member having an expansion cavity, the driver member being in communication with the expansion cavity;

the expansion piece is driven by the driving piece, the area of the expansion cavity is expanded to drive the sealing body to deform towards one side of the pipe body to be sealed along the radial direction of the mounting hole.

Optionally, in the sealing device, the installation cavity is an annular cavity, the expansion member is an annular expansion member, and the annular expansion member is installed in the annular cavity.

Optionally, in the sealing device, the annular cavity is coaxially disposed with the mounting hole.

Optionally, in the sealing device, the cross section of the expansion member is one of circular, rectangular, trapezoidal, M-shaped, D-shaped, C-shaped and V-shaped.

Optionally, in the sealing device, the material of the expansion element is natural rubber, synthetic rubber or composite rubber;

the expansion piece is made of one of silica gel, ethylene propylene diene monomer, nitrile rubber, fluororubber and fluorine-coated rubber.

Optionally, the sealing device described above, wherein in the expanded state, the driver is configured to deliver a medium into the expansion chamber;

the medium is gaseous and is air or nitrogen; or the medium is in a liquid state, and the medium is one of water and an inorganic salt solution.

Optionally, in the sealing device described above, the sealing body includes a communication hole, the communication hole communicates with the mounting cavity, and an opening on a side of the communication hole away from the mounting cavity is provided on an end face of the sealing body.

A communicating pipeline is further arranged between the driving piece and the expansion piece, the communicating pipeline is installed in the communicating hole, and one end of the communicating pipeline is communicated with the expansion cavity; the other end of the communication pipeline is suitable for being communicated with the driving piece.

Optionally, the sealing device further includes a blocking member detachably disposed at an end of the communication pipe away from the expansion member, and the blocking member is adapted to enclose a sealed space with the expansion member and the communication pipe.

A valve body system comprising: the sealing device comprises a shell body, a plurality of pipelines to be sealed and the sealing device, wherein the sealing body is arranged between the shell body and the pipelines to be sealed.

Optionally, in the valve body system, the sealing body is further provided with a limiting hole, and the valve body system further includes a limiting member adapted to pass through the limiting hole to be locked with the housing body.

The technical scheme provided by the utility model, following advantage has:

1. the utility model provides a sealing device, include: a driving member, a sealing body and an expansion member. The sealing body is suitable for being installed on the shell body and provided with an installation hole, the installation hole is suitable for being matched with a pipe body to be sealed, and the sealing body is provided with an installation cavity; the expansion piece is arranged in the installation cavity, the expansion piece is provided with an expansion cavity, and the driving piece is communicated with the expansion cavity; the expansion piece is driven by the driving piece, the area of the expansion cavity is expanded to drive the sealing body to deform towards one side of the pipe body to be sealed along the radial direction of the mounting hole.

The sealing device with the structure is communicated with the expansion piece through the driving piece, after the rotary valve rotates in place, the expansion piece is abutted against the inner wall surface of the mounting cavity by increasing the area of the expansion cavity, and finally the mounting cavity is deformed along with the deformation of the expansion piece, specifically, the expansion piece drives the sealing body to deform towards the direction of the mounting hole; at the moment, the mounting cavity is deformed, so that the sealing pressure of the sealing body on the pipe body to be sealed is increased, the sealing performance of the sealing body on the pipe body to be sealed is further improved, no leakage is generated at the joint of the process pipeline in the multi-way valve body, and the area of the expansion cavity can be adjusted and corrected in real time through the driving of the driving piece in an expansion state, so that the problem of frequent leakage caused by sealing deformation is solved; in addition, when the valve body structure need switch the rotation, the drive through the driving piece sucks the medium in the inflation piece for the inflation chamber of inflation piece reduces, makes only seal the pipeline through sealed body, reduces the rotational friction resistance of sealed department, avoids the rotary valve to appear rotating the difficult problem, and furtherly, if treat between sealed body and the mounting hole the cooperation relation be clearance fit between, then frictional resistance is littleer. Through the cooperation of driving piece and inflation piece, realize the action to the pressure boost between body and the seal structure and release to guarantee valve body system normal operating, avoid shutting down and overhaul.

2. Through long-term industrial operation, the operation pressure of the multi-way valve system exceeds 0.3Mpa, the conditions of liquid leakage and material mixing of equipment obviously occur due to the sealing problem, great risk exists in some fields with higher processing requirement precision, and the sealing effect is difficult to change fundamentally by adopting the existing sealing mode. Through adopting foretell sealing device for the operating pressure of valve body structure can reach more than 0.5Mpa, and through the experiment discovery, the problem of leaking the cluster material can not appear in the valve body system that adopts this sealing device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a valve body system provided in an embodiment;

FIG. 2 is a top view of a valve body system provided in an embodiment;

FIG. 3 is a cross-sectional view taken along section C-C of FIG. 2;

FIG. 4 is an enlarged view of circle A of FIG. 3;

FIG. 5 is an enlarged view of circle B of FIG. 4;

FIG. 6 is a graph of the content of lithium and magnesium ions in the flow-through outlet tube versus time;

description of reference numerals:

1-sealing the body; 11-a mounting cavity; 12-mounting holes; 13-a communication hole; 14-a limiting hole;

2-an expansion member; 21-an expansion chamber;

31-a closure; 32-a connecting pipe;

4-a limiting member;

5-a housing body; 51-a flow-through inlet tube; 52-flow-through outlet pipe;

6-rotating the disc; 61-a transition path;

7-a circulation path;

8-a rotary drive;

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The present embodiment provides a sealing device, as shown in fig. 1 to 5, including: a drive member, a seal body 1 and an expansion member 2. The sealing body 1 is suitable for being mounted on a shell body, the sealing body 1 is provided with a mounting hole 12, the mounting hole 12 is suitable for being matched with a pipe body to be sealed, and the sealing body 1 is provided with a mounting cavity 11; the expansion piece 2 is installed in the installation cavity 11, the expansion piece 2 is provided with an expansion cavity 21, and the driving piece is communicated with the expansion cavity 21; the expansion part 2 has an expansion state that the expansion cavity 21 is expanded in area to drive the sealing body 1 to deform towards one side of the pipe body to be sealed along the radial direction of the mounting hole 12 under the driving of the driving part.

Specifically, the installation cavity 11 is an annular cavity, the expansion member 2 is an annular expansion member 2, and the annular expansion member 2 is installed in the annular cavity; the annular cavity is arranged coaxially with the mounting hole 12.

Be annular installation cavity 11 and guarantee 2 inflation in-process of inflation piece, to the installation cavity 11 deformation in-process to the installation cavity 11 deformation drive power the same of the inside wall face of installation cavity 11, further guarantee that sealing body 1 acts on treating that everywhere of the sealing force on the external wall face of sealed tube is the same, avoid appearing unilateral atress inequality, the medium that causes reveals.

In this embodiment, the expansion member 2 is M-shaped, but in other alternative embodiments, the cross section of the expansion member 2 may also be circular, rectangular, trapezoidal, D-shaped, C-shaped, V-shaped, or the like, as long as it is ensured that the inner wall surface of the mounting hole 12 is driven to deform when the area of the expansion cavity 21 is increased under the driving of the driving member.

In this embodiment, the material of the expansion member 2 is natural rubber, synthetic rubber or composite rubber; for example,

The driving piece is used for conveying a medium into the expansion cavity 21; the medium can be gas, the medium is one of air, nitrogen and inert gas, at the moment, the driving part is an air compressor, and the air compressor is matched with the opening and closing valve body to realize filling or pressure relief of the gas in the expansion part 2; in other alternative embodiments, the medium is in a liquid state and the medium is one of water and a mineral salt solution, for example, the drive member may be a pump.

In this embodiment, the seal body 1 includes a communication hole 13, the communication hole 13 communicates with the mounting cavity 11, and an opening on a side of the communication hole 13 away from the mounting cavity 11 is provided on an end surface of the seal body 1. Specifically, the communication hole 13 is a cylindrical through hole.

A communication pipeline 32 is further arranged between the driving piece and the expansion piece 2, the communication pipeline 32 is installed in the communication hole 13, and one end of the communication pipeline 32 is communicated with the expansion cavity 21; the other end of the communication duct 32 is adapted to communicate with a drive member.

In this embodiment, the sealing device further comprises a blocking piece 31, the blocking piece 31 is detachably disposed on one end of the communication pipeline 32 far away from the expansion piece 2, and the blocking piece 31 is suitable for enclosing a sealed space with the expansion piece 2 and the communication pipeline 32.

In the sealing device with the structure, the driving piece is communicated with the expansion piece 2, after the rotary valve is required to rotate to the position, the area of the expansion cavity 21 is increased, the expansion piece 2 is abutted against the inner wall surface of the mounting cavity 11, and finally the mounting cavity 11 is deformed along with the deformation of the expansion piece 2, specifically, the expansion piece 2 drives the sealing body 1 to deform towards the direction of the mounting hole 12; at the moment, because the installation cavity 11 deforms, the sealing pressure of the sealing body 1 on the pipe body to be sealed is increased, the sealing performance of the sealing body 1 on the pipe body to be sealed is further improved, no leakage is generated at the joint of the process pipeline in the multi-way valve body, and the area of the expansion cavity 21 can be adjusted and corrected in real time through the driving of the driving piece in an expansion state, so that the problem of frequent leakage caused by sealing deformation is solved; in addition, when the valve body structure need switch the rotation, the drive through the driving piece sucks the medium in the inflation piece 2 for the inflation chamber 21 of inflation piece 2 reduces, makes only seal the pipeline through sealed body 1, reduces the rotational friction resistance of sealed department, avoids the rotary valve to appear rotating the difficult problem, and further, if treat between sealed body and the mounting hole the mating relation be clearance fit between, then frictional resistance is littleer. Through the cooperation of driving piece and expansion piece 2, realize the action to the pressure boost between body and the seal structure and release to guarantee valve body system normal operating, avoid shutting down and overhaul.

Example 2

The present embodiment provides a valve body system, as shown in fig. 1, 2 and 3, the valve body system in the present embodiment is a multiple-way valve, wherein the valve body system comprises a housing body, a rotary driver 8, a rotary disk 6 and the sealing device provided in embodiment 1. The rotary driver 8 is connected with the rotary disk 6, the rotary driver 8 drives the rotary disk 6 to rotate along the shell body 5, a plurality of annular circulation passages 7 are arranged between the shell body 5 and the rotary disk 6, a circulation inlet pipe 51 and a circulation outlet pipe 52 are arranged on the shell body 5, a transition passage 61 is arranged in the rotary disk 6, a medium enters the circulation passage from the circulation inlet pipe 51 and flows out to the circulation outlet pipe 52 along the transition passage, the circulation outlet pipe 52 is communicated with an external container, a sealing device is arranged on the circulation outlet pipe 52, the circulation outlet pipe 52 is arranged in the mounting hole 12, and the sealing body 1 is arranged on the shell body 5. In this embodiment, the rotary actuator 8 is a motor.

The use process of sealing device is as follows in this embodiment, and when the valve body system installation is taken one's place, when needing to aerify, the air compressor machine was opened, and the valve body that opens and shuts is opened because the effect of external pressure, and the air compressor machine passes through communicating pipe 32 and the intercommunication of inflation piece 2 to aerify inflation chamber 21, when the rotary actuator 8 of valve body system corresponds the electric current and in the work interval, stop to aerify inflation chamber 21. The valve system starts to operate, and during operation, due to the wear or extrusion of the valve system during operation, when the pressure in the valve system is too high, the blocking element 31 is opened to discharge the pressure until the corresponding current of the rotary actuator 8 is at a normal value. The valve body system can indirectly reflect the pressure of the valve body system according to the corresponding current of the rotary driver 8, so that the opening and closing of the filling or discharging valve can be automatically adjusted, and the function of automatically adjusting the pressure is realized.

In this embodiment, the sealing body 1 is further provided with a limiting hole 14, the valve body system further includes a limiting member 4, and the limiting member 4 is adapted to pass through the limiting hole 14 to be locked with the housing body 5. The limiting hole 14 is a through hole with a circular cross section, and the limiting piece 4 is a hexagon bolt. The arrangement of the limiting piece 4 and the limiting hole 14 further ensures the reliability of the connection between the shell body 5 and the sealing body 1.

Examples of the experiments

In this experimental example, a multi-way valve device having a 1-inch diameter valve port of a housing body was used to perform a combination test of the material of the expansion member 2, the filling medium, and the shape of the sealing section of the expansion member 2. The selection of the driving member is selected according to different filling media, for example, the gas medium is operated by an air compressor, and the liquid medium is operated by a pump.

In this example, an aqueous solution containing 300ppm of calcium ions, an aqueous solution containing 200ppm of zinc ions, and an aqueous solution containing 100ppm of copper ions were flowed through the three flow lines, respectively. In the operation process, the contents of calcium ions, zinc ions and copper ions in the effluent liquid in the three flow outlet pipes 52 are regularly detected, so that whether the system has the problem of material leakage or material mixing is judged.

The system continuously operates 24 hours every day, and after testing for 6 months, the valve body system has no obvious leakage or sealing device damage problem, and the stability and reliability of the sealing device are further proved, so that the operability is realized. Meanwhile, according to the pressure data of the system, it can be seen that the expansion member 2 is made of silicon rubber, which is more suitable for sealing the multi-way valve device adopted in the embodiment, and the pressure is required to be kept not more than 0.3MPa no matter the filling medium is air, helium or 10% sodium chloride solution, so as to realize safe and stable operation of the system. The cross section of the sealing ring is rectangular and M-shaped, and can be tightly attached to the sealing end face of the multi-way valve, so that the sealing effect is better realized, and the pressure is not more than 0.2 MPa.

Comparative example

The rotary driver drives the rotary disk to rotate, the three circulation inlet pipes feed materials respectively, and the three circulation inlet pipes circulate to the circulation outlet pipes through the three annular passages and the three transition passages respectively. Specifically, brine raw materials, low-magnesium water and desalted water flow through the three flow inlet pipes respectively. The annular passage of the brine raw material is arranged between the annular passage of the low-magnesium water and the annular passage of the desalted water, and the comparison example is used for detecting the material crossing in the valve body system adopting the existing sealing device and the sealing device provided by the application.

Line A: selecting a valve port of a shell body in a valve body system, wherein the diameter of the valve port is 1.5 inches, and adopting a change curve of the content of lithium ions and time, which is provided with a sealing strip and a device of the original system;

line B: selecting a valve port of a shell body in a valve body system, wherein the diameter of the valve port is 1.5 inches, and adopting a change curve of the content of magnesium ions and time, which is provided with a sealing strip and a device of the original system;

line C: selecting a valve port of a shell body in a valve body system with the diameter of 1.5 inches, removing the original sealing strip, and changing the sealing device of the utility model into a change curve of the content of lithium ions and time;

line D: selecting a valve port of a shell body in a valve body system with the diameter of 1.5 inches, removing the original sealing strip, and changing the sealing device of the utility model into a sealing device with the change curve of the content of magnesium ions and time;

no matter be C line or D line, its sealing device who adopts, sealed body 1 and inflation piece 2 all adopt the silica gel material, and the driving piece adopts the air compressor machine and the medium that the interior lifting of inflation chamber 21 dashes for the air, adopts M shape sealing washer, and inflation piece 2 is through the air compressor machine air filling back, and pressure keeps at 0.5 Mpa.

The data show that both line C and line D indicate that the product quality remained stable and did not fluctuate over 400 hours of system operation using the sealing device of the present application. And the fluctuation of lithium ions and magnesium ions occurs when the A line and the B line of the original device are respectively operated for 60h, 180h and 192h in the system, particularly the lithium ions and the magnesium ions are suddenly and abnormally increased in 180h, which indicates that brine is mixed and enters a product for detecting the tube body due to the sealing fault of the system at the moment.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A sealing device is characterized by comprising

A drive member;

2. The sealing device of claim 1,

the installation cavity is an annular cavity, the expansion piece is an annular expansion piece, and the annular expansion piece is installed in the annular cavity.

3. The sealing device of claim 2,

the annular cavity and the mounting hole are coaxially arranged.

4. The sealing device according to any one of claims 1 to 3,

the cross section of the expansion piece is one of circular, rectangular, trapezoidal, M-shaped, D-shaped, C-shaped and V-shaped.

5. The sealing device according to any one of claims 1 to 3,

the material of the expansion piece is natural rubber or synthetic rubber or composite rubber;

6. A sealing device according to any one of claims 1-3, wherein in the expanded state the driver is adapted to convey a medium into the expansion chamber;

7. The sealing device according to any one of claims 1 to 3,

the sealing body comprises a communication hole, the communication hole is communicated with the installation cavity, and an opening on one side of the communication hole, which is far away from the installation cavity, is formed in the end face of the sealing body;

8. The sealing device of claim 7,

the sealing device is characterized by further comprising a blocking piece, wherein the blocking piece is detachably arranged at one end, far away from the expansion piece, of the communication pipeline, and the blocking piece is suitable for enclosing a sealing space together with the expansion piece and the communication pipeline.

9. A valve body system, comprising:

a housing body and a number of pipes to be sealed, and a sealing device according to any one of claims 1-8, the sealing body being mounted between the housing body and the pipes to be sealed.

10. The valve body system of claim 9,

the valve body system further comprises a limiting piece, and the limiting piece is suitable for penetrating through the limiting hole to be locked with the shell body.