CN221401718U - Anti-false closing sealing valve - Google Patents

Abstract

The utility model relates to the technical field of valves and discloses an anti-misoperation sealing valve, which comprises a shell and a valve tube, wherein the valve tube is provided with a sealing ring, the shell is provided with a valve rod seat, a valve rod penetrates through the valve rod seat, a wing piece is arranged on the valve rod, the valve rod penetrates through a sealing plug and a disc and is sleeved with a sleeve thread arranged on the shell, a fluid channel is formed between the shell and the sealing plug, when the valve rod rotates, the wing piece pushes the sealing plug to move, the sealing plug is attached to the sealing ring, the attaching surface has no relative movement, the abrasion to a sealing part is small, meanwhile, the structure can be further improved, a limiting rod and a sealing bolt are added, personnel, especially personnel in chemical production can be prevented from mistakenly closing the valve, the limiting rod and the sealing bolt can be flexibly adjusted by using personnel, and the valve can be flexibly selected according to whether the valve is required to be completely closed, and adverse influence on production caused by the personnel mistakenly closing the valve in daily chemical production is prevented from the valve structure.

Description

Anti-false closing sealing valve

Technical Field

The utility model relates to the technical field of valves, and particularly discloses an anti-misclosing sealing valve.

Background

Valves are fluid control devices commonly used in chemical industry to regulate, control and shut off the flow of fluid media. In the chemical production process, the valve plays the following important functions and roles: 1. flow control, 2, pressure regulation, 3, flow direction control, 4, cut-off and cut-off, 5 and safety protection, wherein the ball valve is an important component in chemical production, especially organic chemical production, but the sealing valve has certain defects due to the limitation of the internal structure, such as easy abrasion of the ball in the ball valve due to rotation of the ball, and the reasons of abrasion include friction force, existence of impurities, insufficient lubrication, flow rate/pressure and the like, wherein the friction force is caused by the internal structure of the valve body, for example, when the ball in the ball valve rotates, relative motion is generated between the ball and a sealing ring or a valve pipe of the valve pipe, and the relative motion brings dynamic friction force. The ball is constantly rotated on the housing under the influence of operating forces and medium pressure, which friction forces can lead to wear of the ball, the valve flap, the housing and the sealing ring.

Meanwhile, in some chemical production, titration in a reaction kettle is often set to be in a normally open state, a valve is prevented from being closed by mistake by adopting a method of hanging a card or setting a box, but the situation that a person wrongly indicates that the card is lost or the card is not hung and the box is unlocked exists, reaction materials are required to be continuously added into the reaction kettle in a material stirring state in some chemical production processes, and in the reaction process, the problem of safety and quality caused by the fact that a person wrongly closes a buret is required to be avoided.

In summary, the sealing valve is easy to wear the inner sealing part in the long-term use process, especially in the process of transporting impurity-doped materials, and in some chemical production, the technical problem that personnel close the important normally-open valve by mistake needs to be avoided.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides an anti-misoperation sealing valve, which comprises a shell, a valve tube, a sealing ring arranged on the valve tube, a valve rod seat arranged on the shell, a valve rod penetrating through the valve rod seat, a wing piece arranged on the valve rod, a sleeve thread sleeved on the shell after the valve rod penetrates through the sealing plug and the disc,

When the valve rod rotates, the wing pieces push the sealing plug to move, and a fluid channel is formed between the shell and the sealing plug.

In some embodiments, the valve stem is rotated in a first direction, and as the valve stem is rotated in the first direction, the sealing plug engages the sealing ring and the fluid passage volume changes until no fluid passes.

In some embodiments, the wing plate slides relatively with the contact surface of the disk in the process of pushing the disk by the wing plate, and the contact surface of the disk and the sealing plug does not slide relatively.

In some embodiments, there is no relative sliding during the attachment of the sealing plug to the sealing ring.

In some embodiments, the direction of rotation of the valve stem is a second direction rotation, and the tab pushes the sealing plug to move as the valve stem is rotated in the second direction, the fluid passageway volume increases.

In some embodiments, the valve rod is further provided with a rotating fit portion, the rotating fit portion is in threaded fit with the limiting rod, and when the rotating fit portion rotates, the limiting rod moves under the threaded fit effect.

In some embodiments, when the valve rod rotates in a first direction, the wing plate pushes the disc, and further pushes the sealing plug to move, and the limiting rod moves in opposite directions with the sealing plug under the action of the threaded fit.

In some embodiments, the stop lever contacts the sealing plug and blocks movement of the sealing plug, which in turn blocks rotation of the valve stem in the first direction.

In some embodiments, the stop lever is provided with a metering scale.

In some embodiments, the valve tube is fitted with a quick connector.

The utility model has the advantages that:

1. In some embodiments of the present utility model, when the valve rod rotates in the first direction, for example, in a clockwise direction, the valve rod is provided with the threaded portion, and the threaded portion is sleeved with the threads on the inner wall of the sleeve, so when the valve rod rotates in the clockwise direction, the threaded portion and the sleeve can move relatively, in the process of upward movement of the valve rod, the wing pushes the sealing plug to move upward, the sealing plug is attached to the sealing ring, and in the process of attachment of the sealing plug to the sealing ring, no relative sliding exists relative to the attachment surface, so that the sealing ring is not subject to friction parallel to the contact surface, abrasion of internal components of the valve is avoided, and the service life is prolonged.

2. In other embodiments of the utility model, the sealing valve is further improved, a rotating matching part is movably arranged on the valve rod, a limiting rod capable of rotating along with the rotating matching part is movably arranged, the limiting rod can be arranged according to the screwing length, the closing degree of the valve is limited, personnel errors in chemical production are prevented, and the reaction titration valve is closed.

3. In other embodiments of the present utility model, the stop lever is further marked with a scale, and the length of the stop lever screwed into the housing is related to the valve opening, so that the scale can be used as marking information for confirming the valve opening by daily chemical production personnel, and production errors caused by excessively large or excessively small daily valve opening are prevented.

4. In other embodiments of the present utility model, the stop lever may be screwed out of the seal valve and into the threaded sealing plug, and in some applications, the anti-shut-off seal valve may be changed to a universal seal valve that can shut off flow adjustment to zero.

Drawings

FIG. 1 is a view showing the construction of the external appearance of embodiment 1 of the present utility model

FIG. 2 is a view showing the construction of the external appearance of embodiment 2 of the present utility model

FIG. 3 shows a cross-sectional view of embodiment 1 of the utility model in a first state

FIG. 4 shows a cross-sectional view of embodiment 1 of the utility model in a second state

FIG. 5 is a B-B sectional view showing a third state of embodiment 2 of the present utility model

FIG. 6 shows an enlarged exploded view of FIG. 6 at A

FIG. 7 is a B-B sectional view showing a fourth state of embodiment 2 of the present utility model

FIG. 8 shows a first angle view of the valve stem connection of the present utility model

FIG. 9 is a second angular view of the valve stem connection of the present utility model

FIG. 10 is a view showing the internal construction of embodiment 2 of the present utility model

FIG. 11 is a cross-sectional view showing the case of using a sealing plug according to embodiment 2 of the present utility model

Description of the drawings: 1. a housing; 11. an upper solid lobe; 12. a valve rod seat; 131. a sealing bolt; 13. a housing internal thread; 2. a handle; 3. a valve stem; 31. a first valve stem; 311. polygonal prisms; 312. a screw-thread mating portion; 32. a second valve stem; 321. polygonal-edge channels; 33. a fin; 331. a first fin; 332. a second fin; 4. a limit rod; 41. marking the scale; 42. meshing lines; 5. a sleeve; 51. engagement threads; 6. a sealing plug; 7. a disc; 8. a valve tube; 81. a seal ring; 9. a quick connector; 10. a fluid channel;

Description of the embodiments

In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

In the following description, spatial and azimuthal terms such as vertical "and" horizontal "may be used to describe embodiments of the utility model, but it should be understood that these terms are merely for convenience in describing the embodiments shown in the drawings and do not require that the actual device be constructed or operated in a particular orientation. In the following description, the use of terms such as "connected," "coupled," "fixed," and "attached" may refer to two elements or structures being directly connected without other elements or structures, and may refer to two elements or structures being indirectly connected through intervening elements or structures, unless the context clearly dictates otherwise. The term "drive connection" refers to the transmission of power and the relative movement resulting therefrom between two or more elements or structures in a connected relationship.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In order to distinguish the position of the wing, the first wing and the second wing are respectively used for reference, and a person skilled in the art can refer to the reference sign in the specification for judgment.

In the present utility model, the "first direction rotation" may be clockwise, the "second direction rotation" may be counterclockwise, and of course, the "first direction rotation" may be counterclockwise, and the "second direction rotation" may be clockwise.

In the present utility model, the clockwise direction is clockwise when the upper surface of the handle is the upper part, and the counterclockwise direction is counterclockwise when the upper surface of the handle is the upper part.

Examples

Referring to fig. 1, 3 and 4, the utility model discloses a sealing valve capable of preventing error closing, comprising a housing 1, wherein the housing 1 is made of common materials such as carbon steel, stainless steel, brass, polypropylene or cast iron, the sealing valve further comprises a valve tube 8 connected with the housing 1, one end of the valve tube 8 is connected with the housing 1, a quick connector 9 is arranged at one end of the valve tube 8, the valve tube 8 can be made of the same material as the housing 1, or different materials are selected under the condition of ensuring sealing, the valve tube 8 is in fluid communication with the interior of the housing 1, the valve tube 8 can be preferably arranged on two symmetrical sides of the central section of the housing 1, or when the central lines of the valve tube 8 are positioned on the same plane, the two valve tubes 8 form an included angle of 0-180 degrees, a sealing ring 81 is arranged at the connecting part of the valve tube 8 and the housing 1, the sealing ring 81 can be made of plastic or rubber, the sealing ring 81 is connected with the valve tube 8 and extends into the interior of the housing 1, the sealing ring 81 can be optionally formed with a certain included angle with the upper surface of the sealing plug 6, the shell 1 is provided with a valve rod seat 12, the valve rod 3 freely penetrates through the valve rod seat 12, the valve rod 3 and the valve rod seat 12 adopt sealing measures to be in a sealing state, the sealing measures can be that an O-ring or an adaptive X-shaped ring is used between the valve rod 3 and the valve rod seat 12, the valve rod 3 is provided with a wing piece 33, the wing piece 33 is a circular thin piece, the center of the circular thin piece is connected with the valve rod 3, the wing piece 33 is detachably connected with the valve rod 3 in the center or is not detachably connected with the center, so long as the condition that when the valve rod 3 axially moves, the wing piece 33 can move in the same direction, the valve rod 3 penetrates through the sealing plug 6, a second wing piece 332 is arranged at the part of the valve rod 3 before the valve rod 3 penetrates through the sealing plug 6, the valve rod 3 penetrates through the sealing plug 6 to be thick, then penetrates through the disc 7, the valve rod 3 freely penetrates through the disc 7, the valve rod 3 part passing through the disc 7 is provided with a first wing 331 which is in threaded engagement with the sleeve 5 arranged on the shell 1, a fluid channel 10 is formed between the shell 1 and the sealing plug 6, and when the valve rod 3 rotates, the wing 33 pushes the sealing plug 6 to move.

Referring to fig. 3, which is a cross-sectional view of the open state of the present utility model, when the valve rod 3 rotates in the first direction, and rotates along with the valve rod 3 in the first direction, the second fin 332 pushes the sealing plug 6 to move toward the sleeve 5, the contact surface between the second fin 332 and the sealing plug 6 adopts smooth friction-reducing treatment, the sealing plug 6 is far away, the volume of the fluid channel 10 is increased, and the flow rate allowed by the sealing valve is increased, and fig. 3 shows that the fluid channel 10 has a fluid passing state in the first state.

Referring to fig. 4, a cross-sectional view of the present utility model in a closed state is shown, when the valve rod 3 rotates in a second direction, and rotates along with the second direction of the valve rod 3, the first vane 331 pushes the disc 7, and the disc 7 pushes the sealing plug 6, in this process, the volume of the fluid channel 10 formed by the sealing plug 6 and the housing 1 is reduced, the flow rate that can pass through is also reduced, when the sealing plug 6 moves to be in contact with the sealing ring 81, the volume of the fluid channel 10 changes to be free of fluid passing, the side surface of the sealing plug 6 is in contact with the sealing ring 81, and the angle adaptation is adopted, the sealing plug 6 made of elastic material can be in contact with the sealing ring 81 in a manner of no relative movement friction, and no relative sliding occurs during the contact process of the sealing plug 6 and the sealing ring 81, so that abrasion of the sealing ring 81 is reduced, and fig. 4 shows that the fluid channel 10 has a fluid passing state in the second state.

Examples

Referring to fig. 2 and fig. 5 to 10, the difference between the present embodiment 2 and the embodiment 1 is that the valve rod 3 is composed of the first valve rod 31 and the second valve rod 32, as shown in fig. 6, the combination mode is that the end of the first valve rod 31 is provided with a polygonal prism 311, the end of the second valve rod 32 is provided with a polygonal prism channel 321 matched with the polygonal prism 311, the polygonal prism 311 of the first valve rod 31 can be freely and axially inserted into the polygonal prism channel 321 of the second valve rod 32, and the second valve rod 32 is also circumferentially rotated due to the polygonal prism 311 being positioned in the polygonal prism channel 321 when the first valve rod 31 circumferentially rotates.

The valve rod 3 is further provided with a threaded matching part 312 in threaded matching with the limit rod 4, the limit rod 4 is provided with an engaging thread 42, in this way, the valve rod 3 and the limit rod 4 are in spiral transmission, the threaded matching part 312 is positioned in the upper solid valve 11 in the shell 1 as shown in fig. 5,7 and 11, and can move along with the circumference of the valve rod 3, namely, when the first valve rod 31 drives the second valve rod 32 to rotate, the threaded matching part 312 starts to rotate, the limit rod 4 as the driven screw moves under the action of threaded matching, and meanwhile, the polygonal prisms 311 are axially inserted into or separated from the polygonal channels 321 according to different rotating directions, but after the process of separating from the polygonal channels 321, the polygonal prisms 311 are still partially in the polygonal channels 321, so that incomplete separation is ensured.

As shown in fig. 5, the sealing valve is in a third state, for example, when the first valve rod 31 starts to rotate in a first direction, the first valve rod 31 drives the second valve rod 32 to rotate, the second valve rod 32 starts to move towards the threaded sleeve 5 under the action of the threads of the sleeve 5, the polygonal prism 311 at the tail end of the first valve rod 31 is axially separated from the polygonal prism channel 321 of the second valve rod 32, the second wing 332 pushes the sealing plug 6 to move towards the threaded sleeve 5, the volume of the fluid channel 10 formed by the sealing plug 6 and the shell 1 is increased, and fluid is kept to pass through, in the process, the limiting rod 4 serving as a driven threaded rod moves towards the outside of the shell 1 under the action of the threaded matching part 312, the marking scale 41 is engraved on the limiting rod 4, in the moving process, the value of the exposed part of the marking scale 41 changes, and a user can read the volume and the corresponding flow of the fluid channel 10 at the moment according to the change of the marking scale 41.

As shown in fig. 6, the sealing valve is in a third state, for example, when the first valve rod 31 starts to rotate in the second direction, the first valve rod 31 drives the second valve rod 32 to rotate, the second valve rod 32 moves towards the valve rod 3 seat 12 under the action of the threads of the sleeve 5, the polygonal prism 311 starts to be inserted into the polygonal prism channel 321, the first wing 331 pushes the disc 7, the disc 7 pushes the sealing plug 6 to move towards the valve rod seat 12, in the process, the volume of the fluid channel 10 formed by the shell 1 and the sealing plug 6 is reduced, the flow rate can be reduced, when the fluid channel 10 is reduced to a certain volume, the flow rate is reduced to possibly influence the safety condition of chemical production, the limiting rod 4 moves towards the sleeve 5 for a certain distance, the limiting rod 4 contacts with the sealing plug 6 and blocks the sealing plug 6 from moving, and accordingly, the second direction of the valve rod 3 is blocked from rotating, so that personnel cannot continue to rotate the handle 2, the valve flow rate is reduced, the quality in chemical production and the personnel safety of the possibility of misoperation is reduced.

As a flexible modification to the fact that the person skilled in the art can screw the stop lever 4 out of the housing 1 and screw the threaded sealing bolt 131 into the housing internal thread 13 as shown in fig. 11, embodiment 2 of the present utility model can achieve the effect that the volume of the fluid passage 10 is zero without fluid passage in the case of rotation of the valve stem 3 in the second direction, as long as the screw thread of the sealing bolt 131 is secured from contact with the screw thread mating portion 312, and the person skilled in the art can freely combine them according to the embodiment and the description.

It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Claims (10)

1. The utility model provides a prevent mistake and close sealing valve, includes, casing (1), valve pipe (8) are provided with sealing washer (81), casing (1) are provided with valve rod seat (12), wear to have in valve rod seat (12) valve rod (3), a serial communication port, valve rod (3) are provided with fin (33), after valve rod (3) pass sealing plug (6) and disc (7) with set up in sleeve (5) screw-thread fit of casing (1), casing (1) with form fluid channel (10) between sealing plug (6), when valve rod (3) rotate, fin (33) promote sealing plug (6) and remove.

2. The false shut-off preventing sealing valve according to claim 1, wherein the valve rod (3) rotates in a first direction, and rotates along with the valve rod (3) in the first direction, the sealing plug (6) is attached to the sealing ring (81), and the volume of the fluid channel (10) changes until no fluid passes through.

3. The false shut-off preventing sealing valve according to claim 2, wherein the wing (33) slides relatively with the contact surface of the disk (7) in the process of pushing the disk (7), and the contact surface of the disk (7) and the sealing plug (6) does not slide relatively.

4. A false shut-off preventing sealing valve according to any of the claims 2 or 3, characterized in that the sealing plug (6) is free of relative sliding during the fitting of the sealing ring (81).

5. The false shut-off preventing sealing valve according to claim 1, wherein the valve stem (3) rotates in a second direction, and the wing (33) pushes the sealing plug (6) to move along with the rotation of the valve stem (3) in the second direction, and the volume of the fluid channel (10) increases.

6. The false shut-off preventing sealing valve according to claim 1, wherein the valve rod (3) is further provided with a threaded matching part (312), the threaded matching part (312) is in threaded matching with the limit rod (4), and when the valve rod (3) rotates, the valve rod (3) serves as a driving screw rod under the action of threaded matching, and the limit rod (4) serving as a driven screw rod is driven to move.

7. The false shut-off preventing sealing valve according to claim 6, wherein when the valve rod (3) rotates in a first direction, the wing (33) pushes the disc (7) and further pushes the sealing plug (6) to move, and the limiting rod (4) moves opposite to the sealing plug (6) under the action of screw thread fit.

8. The false shut-off preventing sealing valve according to claim 7, wherein the stop lever (4) contacts the sealing plug (6) and blocks movement of the sealing plug (6) which in turn blocks rotation of the valve stem (3) in the first direction.

9. The false shut-off preventing sealing valve as in any one of claims 6 to 8, wherein the stop lever (4) is provided with an identification scale (41).

10. The false shut-off preventing sealing valve according to claim 1, characterized in that the valve tube (8) is fitted with a quick coupling (9).