A valve sealing protection device based on gravity

Abstract

The present invention discloses a valve sealing protection device based on gravity, including a sealing base, the sealing base is sleeved on the outer peripheral side of a cylindrical valve body, a guide pillar is arranged on the sealing base, a valve cover is arranged between two guide pillars, the valve cover is slidably connected to the guide pillar through a connecting bracket, a stack is arranged above the valve cover, the stack is slidably connected to the guide pillar through a connecting assembly, and the connecting assembly can fix the stack at the upper position of the valve cover. The present invention uses the guide pillar to limit the valve cover at the top of the cylindrical valve body, and uses the gravity of the valve cover to seal the cylindrical valve body. The entire opening and closing valve operation is automatically regulated according to the internal pressure of the pipeline, and responds to the pressure change in the pipeline in real time, so that the valve management is simpler, more efficient, and more flexible. In addition, stacks are arranged above the valve cover, and the pressure bearing capacity of the valve cover is changed by selectively adding stacks, so that different pipeline pressure systems can be flexibly matched.

Description

Technical Field

[0001] The invention relates to the technical field of valve sealing, and in particular to a valve sealing protection device based on gravity. Background Art

[0002] In many fields such as industrial production, petrochemicals, water treatment, and energy transportation, pipeline systems are indispensable infrastructure. In order to ensure the safe operation of pipeline systems, valves, as key equipment for controlling the flow of media, play a vital role. In many application scenarios, the pressure inside the pipeline will fluctuate with changes in working conditions. At this time, operators need to open and close the valves according to the internal pressure of the pipeline to form a pressurization and pressure relief effect to ensure the normal operation of the pipeline.

[0003] Traditional management methods usually rely on manual adjustments, but frequent manual intervention not only increases the workload of operators, but also easily leads to operational errors, affecting the stability of the system. Therefore, a quick opening and closing valve structure is further developed to reduce the labor intensity of operators and conduct quick management of valves.

[0004] However, in actual use, this method still requires timely operation by staff, which makes the valve opening and closing action lag more obvious and cannot respond to changes in the internal pressure of the pipeline in real time. Especially for the protection of vacuum pipelines and micro-positive pressure equipment with lower requirements, the sealing requirements are lower but the valve opening and closing actions need to be frequently performed, which can easily lead to the system being unable to adjust in time, posing a safety hazard. Summary of the invention

[0005] The object of the present invention is to provide a valve sealing protection device based on gravity, so as to solve the technical problem in the prior art that the system cannot be adjusted in time due to obvious operation lag.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A valve sealing protection device based on gravity, comprising a sealing base, the sealing base is sleeved on the outer peripheral side of a cylindrical valve body, the sealing base is provided with two guide pillars extending vertically upward, and the two guide pillars are symmetrically arranged with the long axis of the sealing base as the symmetry axis;

[0008] A valve cover is arranged between the two guide pillars, the valve cover is slidably connected to the guide pillars through a connecting bracket, the valve cover is arranged just above the opening of the cylindrical valve body, and the valve cover is movably connected to the upper opening of the cylindrical valve body under the action of pipeline pressure;

[0009] A stack is arranged above the valve cover, and the stack is slidably connected to the guide pillar via a connecting assembly, and the connecting assembly can fix the stack at a position above the valve cover.

[0010] As a preferred solution of the present invention, the connecting bracket includes a first bracket and a first sleeve, one end of the first bracket is connected to the valve cover, and the other end is connected to the first sleeve, the first sleeve is slidably sleeved on the outside of the guide pillar, annular cavities are circumferentially opened at both ends of the first sleeve, a plurality of balls are arranged in a circumferential array in the annular cavity, the balls are rotatably arranged in the annular cavity, an opening is arranged on the side of the annular cavity facing the guide pillar, a partial arc segment of the ball protrudes from the opening, and the vertex of the arc segment of the ball protruding from the opening is flush with the inner wall of the first sleeve.

[0011] As a preferred solution of the present invention, the connecting assembly includes a second bracket, one end of the second bracket is connected to the stack, and the other end is provided with a second sleeve, the second sleeve is slidably sleeved outside the guide pillar, a rubber outer convex section is provided on the inner wall of the second sleeve, and a matching outer convex section is provided on the outer wall of the guide pillar;

[0012] The mating outer protrusion and the rubber outer protrusion are interferingly engaged with each other to fix the stack at a preset height position, and the mating outer protrusion and the rubber outer protrusion are mutually squeezed under the action of external force to lower the stack onto the valve cover.

[0013] As a preferred solution of the present invention, the connection assembly includes a second bracket, one end of the second bracket is connected to the laminate, and the other end is provided with an electromagnetic sleeve, and the electromagnetic sleeve is slidably sleeved outside the guide pillar;

[0014] A visual monitor is arranged outside the sealing base, the visual monitor is connected to the electromagnetic sleeve signal, and a monitoring unit of the visual monitor forms a monitoring point at a preset height of the guide pillar;

[0015] The monitoring unit is used to monitor the frequency or duration of the valve cover sliding over the monitoring point to control the connection form of the electromagnetic sleeve and the guide pillar.

[0016] As a preferred solution of the present invention, the rotating assembly includes a second bracket, one end of the second bracket is connected to the stack, and the other end is provided with a second sleeve, the inner wall of the second sleeve is provided with a snap-fitting convex node, and the guide pillar is provided with a double-stage lever assembly movably engaged with the snap-fitting convex node;

[0017] The double-stage lever assembly includes two lever structures, which are sequentially arranged inside the guide pillar along the length direction of the guide pillar, with adjacent ends of the two lever structures overlapping and abutting each other, and the upper end of the lower lever structure being arranged away from the stack;

[0018] Among them, a reset elastic member and a ball column are respectively arranged on both sides of the top and bottom ends of the two lever structures, the reset elastic member is connected to the inner wall of the guide pillar, and the ball column protrudes from the surface of the guide pillar and extends outward.

[0019] As a preferred solution of the present invention, a limited position disc is provided on the top of the guide pillar, and a pressure sensor and a buzzer are provided in the sealing base. The pressure sensor is connected to the guide pillar and the buzzer respectively. When the guide pillar acts on the pressure sensor with a pressure exceeding a preset value, the pressure sensor triggers the buzzer to operate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention uses a guide pillar to limit the valve cover at the top of the cylindrical valve body, and uses the valve cover's own gravity to seal the cylindrical valve body. When the pressure in the pipeline is greater than the valve cover's own gravity, the valve cover slides up to open the valve body opening to form a pressure relief mode. When the pressure in the pipeline is less than the valve cover's own gravity, the valve cover falls by gravity to block the cylindrical valve body to close the valve. The entire valve opening and closing operation is automatically regulated according to the internal pressure of the pipeline, responding to changes in the pressure in the pipeline in real time, making valve management simpler, more efficient, and more flexible.

[0022] In addition, the present invention provides a stack above the valve cover, and selectively adds the stack to change the pressure bearing capacity of the valve cover, thereby being able to flexibly match different pipeline pressure systems and reducing the application limitations of a single valve cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the first sleeve of the present invention;

[0026] Figure 3 It is a schematic diagram of the cross-section structure of the first embodiment of the present invention;

[0027] Figure 4 For the present invention Figure 3 The enlarged view of point A in the middle;

[0028] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0029] Figure 6 This is a schematic diagram of the cross-section structure of the third embodiment of the present invention;

[0030] Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle.

[0031] The numbers in the figure represent the following:

[0032] 1. Sealing base; 2. Cylindrical valve body; 3. Guide pillar; 4. Valve cover; 5. Connecting bracket; 6. Lamination; 7. Connecting assembly; 8. First bracket; 9. First sleeve; 10. Annular cavity; 11. Ball; 12. Second bracket; 13. Second sleeve; 14. Rubber outer convex section; 15. Matching outer convex section; 16. Electromagnetic sleeve; 17. Visual monitor; 18. Snap-on convex section; 19. Two-stage lever assembly; 20. Lever structure; 21. Reset elastic member; 22. Ball column; 23. Limiting disc; 24. Buzzer. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 7 As shown, the present invention provides a valve sealing protection device based on gravity, including a sealing base 1, which is sleeved on the outer peripheral side of a cylindrical valve body 2. The sealing base 1 can be fixedly installed on the outer peripheral side of the cylindrical valve body 2, or can be movably sleeved on the outside of the cylindrical valve body 2 by means of threads or the like. Two guide pillars 3 extending vertically upward are arranged on the sealing base 1, and the two guide pillars 3 are symmetrically arranged with the long axis of the sealing base 1 as the symmetry axis.

[0035] A valve cover 4 is arranged between the two guide pillars 3. The valve cover 4 is slidably connected to the guide pillars 3 through a connecting bracket 5. The valve cover 4 is arranged just above the opening of the cylindrical valve body 2. The valve cover 4 is movably connected to the upper opening of the cylindrical valve body 2 under the action of pipeline pressure.

[0036] The symmetrically arranged guide pillars 3 can make the valve cover 4 as evenly stressed as possible. That is, when the pressure in the pipeline is relatively high and impacts the valve cover 4 from the opening, the symmetrically arranged guide pillars 3 can make the pressure as evenly distributed on the surface of the valve cover 4 as possible, and will not impact on one side of the valve cover 4 to cause the valve cover 4 to tilt, thus avoiding the risk of the first bracket 8 being subjected to a large force.

[0037] A stack 6 is provided above the valve cover 4 . The stack 6 is slidably connected to the guide pillar 3 via a connecting assembly 7 , and the connecting assembly 7 can fix the stack 6 at a position above the valve cover 4 .

[0038] In the present device, the guide pillar 3 limits the valve cover 4, limiting the valve cover 4 to slide only along the length direction of the guide pillar 3. Therefore, when the valve cover 4 is impacted by the pressure in the pipeline, it will only move vertically up and down, and will not move to other positions and angles, so that the valve cover 4 will not fall and fail to block the valve body opening.

[0039] In addition, the connecting bracket 5 includes a first bracket 8 and a first sleeve 9. One end of the first bracket 8 is connected to the valve cover 4, and the other end is connected to the first sleeve 9. The first sleeve 9 is slidably sleeved on the outside of the guide pillar 3. An annular cavity 10 is circumferentially opened at both ends of the first sleeve 9. A plurality of balls 11 are arranged in a circumferential array in the annular cavity 10. The balls 11 are rotatably arranged in the annular cavity 10. An opening is arranged on the side of the annular cavity 10 facing the guide pillar 3. A partial arc segment of the ball 11 protrudes from the opening, and the apex of the arc segment of the ball 11 protruding from the opening is flush with the inner wall of the first sleeve 9.

[0040] The valve cover 4 is slidably connected to the guide pillar 3 through the first bracket 8 and the first sleeve 9. The end of the first sleeve 9 is provided with a ball 11, and a part of the arc section of the ball 11 protrudes from the opening, so that the first sleeve 9 can contact the outer wall of the guide pillar 3 with the ball 11 when it is slightly tilted, rather than contacting the guide pillar 3 with the inner wall of the first sleeve 9, so that the friction force is smaller when sliding in this form. Specifically, since the first sleeve 9 is slidably connected to the guide pillar 3, there is a gap between it and the guide pillar 3, so when the valve cover 4 is impacted by the pressure in the pipeline, the first sleeve 9 may not move vertically upward, but make the first sleeve 9 tilted. At this time, the tilted first sleeve 9 contacts the guide pillar 3 through the ball 11, which can make the friction force smaller and the sliding smoother.

[0041] In the present device, the pressure of the valve cover 4 can be increased by lowering the stack 6 onto the valve cover 4, thereby adapting to different pipeline pressures and actual applications.

[0042] Specifically, as an embodiment 1 of placing the stack 6, as Figure 3 and Figure 4As shown, the connecting assembly 7 includes a second bracket 12, one end of which is connected to the stack 6, and the other end is provided with a second sleeve 13, the second sleeve 13 is slidably sleeved on the outside of the guide pillar 3, a rubber outer convex node 14 is provided on the inner wall of the second sleeve 13, and a matching outer convex node 15 is provided on the outer wall of the guide pillar 3.

[0043] The mating external protrusion 15 and the rubber external protrusion 14 interfere with each other to fix the stack 6 at a preset height position, and the mating external protrusion 15 and the rubber external protrusion 14 are pressed against each other under the action of external force to lower the stack 6 onto the valve cover 4.

[0044] In this embodiment, the stack 6 is suspended and fixed above the valve cover 4 by the mutual interference between the rubber outer protrusion 14 and the matching outer protrusion 15. When the stack 6 is lowered, the rubber outer protrusion 14 and the matching outer protrusion 15 are squeezed and retracted by manually pressing the stack 6, so that the stack 6 falls.

[0045] As the second embodiment, Figure 5 As shown, the connecting assembly 7 includes a second bracket 12 , one end of which is connected to the laminate 6 , and the other end of which is provided with an electromagnetic sleeve 16 , which is slidably sleeved on the outside of the guide pillar 3 .

[0046] A visual monitor 17 is arranged on the outside of the sealing base 1, and the visual monitor 17 is connected to the electromagnetic sleeve 16 signal. The monitoring unit of the visual monitor 17 forms a monitoring point at a preset height of the guide pillar 3. The monitoring unit is used to monitor the frequency or duration of the valve cover 4 sliding over the monitoring point to control the connection form between the electromagnetic sleeve 16 and the guide pillar 3 (i.e., sliding connection and fixed connection).

[0047] The electromagnetic sleeve 16 is a mature component in the prior art. It is fixed on the guide pillar 3 by being clamped with the outer wall of the guide pillar 3 through an internal mechanical clamping unit, and is disconnected from the outer wall of the guide pillar 3 through the mechanical clamping unit to slide on the guide pillar 3.

[0048] In the second embodiment, the lowering of the stack 6 is automatically controlled according to the actual situation. Specifically, the visual monitor 17 forms a monitoring point on the guide pillar 3. When the valve cover 4 frequently slides up and passes over the monitoring point due to the pipeline pressure or does not fall for a long time after passing over the monitoring point, it means that the pressure in the pipeline is relatively unstable or the pipeline pressure is relatively high at this stage. At this time, the visual monitor 17 outputs a signal to disconnect the electromagnetic sleeve 16 from the guide pillar 3, so that the stack 6 slides down and exerts gravity on the valve cover 4, thereby adapting to specific changes in the situation. The visual monitor 17 can be as follows Figure 5 The device shown is arranged on the sealing base 1, and can be independently arranged on an external platform.

[0049] As embodiment 3, Figure 6 and Figure 7 As shown, the rotating assembly includes a second bracket 12, one end of which is connected to the stack 6, and the other end is provided with a second sleeve 13, the inner wall of the second sleeve 13 is provided with a snap-fitting convex node 18, and the guide pillar 3 is provided with a double-stage lever assembly 19 that is movably snap-fitted with the snap-fitting convex node 18.

[0050] The double-stage lever assembly 19 includes two lever structures 20, which are arranged in sequence inside the guide pillar 3 along the length direction of the guide pillar 3, and the two adjacent ends of the two lever structures 20 overlap and abut, and the upper end of the lower lever structure 20 is arranged away from the stack 6, wherein the top and bottom ends of the two lever structures 20 are respectively provided with a reset elastic member 21 and a ball column 22, the reset elastic member 21 is connected to the inner wall of the guide pillar 3, and the ball column 22 protrudes from the surface of the guide pillar 3 and extends outward.

[0051] In the third embodiment, the stacking sheet 6 automatically drops down according to the rising height of the valve cover 4. That is, a calibration height is preset on the guide pillar 3, and a trigger key of the double-stage lever assembly 19 is set at this calibration height. When the valve cover 4 rises to this height due to the impact of pipeline pressure, it means that the pressure in the pipeline is high enough to add stacking sheets 6. At this time, the valve cover 4 contacts the trigger key of the double-stage lever assembly 19 at this position, prompting the double-stage lever assembly 19 to contact the limit of the stacking sheet 6, thereby sliding the stacking sheet 6 down and completing the pressure increase.

[0052] When the first sleeve 9 squeezes the lower ball column 22, the two lever structures 20 inside the guide pillar 3 rotate, causing the upper ball column 22 to shrink and retract synchronously, so that the clamping convex node 18 has no limit piece, so that the second sleeve 13 slides down, and then the laminate 6 falls.

[0053] In addition, a limiting disc 23 is provided on the top of the guide pillar 3, and a pressure sensor and a buzzer 24 are provided in the sealing base 1. The pressure sensor is connected to the guide pillar 3 and the buzzer 24 respectively. When the guide pillar 3 acts on the pressure sensor with a pressure exceeding the preset value, the pressure sensor triggers the buzzer 24 to work.

[0054] When a failure occurs in the pipeline pressure system and the pressure is abnormally high, the valve cover 4 is suddenly lifted up and hits the limit disc 23. The impact force is transmitted to the pressure sensor in the sealing base 1 through the limit disc 23 and the guide pillar 3. When the pressure exceeds the preset value, the pressure sensor triggers the buzzer 24 to indicate that the system pressure is abnormal.

[0055] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A valve sealing protection device based on gravity, characterized in that: The invention comprises a sealing base (1), wherein the sealing base (1) is sleeved on the outer peripheral side of a cylindrical valve body (2), and the sealing base (1) is provided with two guide pillars (3) extending vertically upward, and the two guide pillars (3) are symmetrically arranged with the long axis of the sealing base (1) as the symmetry axis; A valve cover (4) is arranged between the two guide pillars (3), the valve cover (4) is slidably connected to the guide pillars (3) via a connecting bracket (5), the valve cover (4) is arranged just above the opening of the cylindrical valve body (2), and the valve cover (4) is movably connected to the upper opening of the cylindrical valve body (2) under the action of pipeline pressure; A stack (6) is provided above the valve cover (4), and the stack (6) is slidably connected to the guide pillar (3) via a connecting assembly (7), and the connecting assembly (7) is capable of fixing the stack (6) at a position above the valve cover (4).

2. A valve sealing protection device based on gravity according to claim 1, characterized in that: The connecting bracket (5) comprises a first bracket (8) and a first sleeve (9), one end of the first bracket (8) is connected to the valve cover (4), and the other end is connected to the first sleeve (9), the first sleeve (9) is slidably sleeved on the outside of the guide pillar (3), annular cavities (10) are circumferentially opened at both ends of the first sleeve (9), a plurality of balls (11) are arranged in a circumferential array in the annular cavity (10), the balls (11) are rotatably arranged in the annular cavity (10), an opening is arranged on one side of the annular cavity (10) facing the guide pillar (3), a part of the arc segment of the ball (11) protrudes from the opening, and the vertex of the arc segment of the ball (11) protruding from the opening is flush with the inner wall of the first sleeve (9).

3. A valve sealing protection device based on gravity according to claim 2, characterized in that: The connecting assembly (7) comprises a second bracket (12), one end of the second bracket (12) is connected to the laminate (6), and the other end is provided with a second sleeve (13), the second sleeve (13) is slidably sleeved outside the guide pillar (3), a rubber outer convex section (14) is provided on the inner wall of the second sleeve (13), and a matching outer convex section (15) is provided on the outer wall of the guide pillar (3); The mating external protrusion (15) and the rubber external protrusion (14) are interferingly engaged with each other to fix the stack (6) at a preset height position; the mating external protrusion (15) and the rubber external protrusion (14) are mutually squeezed under the action of an external force to lower the stack (6) onto the valve cover (4).

4. A valve sealing protection device based on gravity according to claim 2, characterized in that: The connecting assembly (7) comprises a second bracket (12), one end of the second bracket (12) is connected to the laminate (6), and the other end is provided with an electromagnetic sleeve (16), and the electromagnetic sleeve (16) is slidably sleeved outside the guide pillar (3); A visual monitor (17) is arranged outside the sealing base (1), the visual monitor (17) is connected to the electromagnetic sleeve (16) by signal, and a monitoring unit of the visual monitor (17) forms a monitoring point at a preset height of the guide pillar (3); The monitoring unit is used to monitor the frequency or duration of the valve cover (4) sliding over the monitoring point, so as to control the connection form between the electromagnetic sleeve (16) and the guide pillar (3).

5. The valve sealing protection device based on gravity according to claim 2, characterized in that: The rotating assembly comprises a second bracket (12), one end of the second bracket (12) is connected to the laminate (6), and the other end is provided with a second sleeve (13), the inner wall of the second sleeve (13) is provided with a snap-fitting convex node (18), and the guide pillar (3) is provided with a double-stage lever assembly (19) movably snap-fitted with the snap-fitting convex node (18); The double-stage lever assembly (19) comprises two lever structures (20), the two lever structures (20) are arranged in sequence inside the guide pillar (3) along the length direction of the guide pillar (3), the two adjacent ends of the two lever structures (20) overlap and abut, and the upper end of the lower lever structure (20) is arranged away from the laminate (6); Wherein, a reset elastic member (21) and a ball column (22) are respectively arranged on both sides of the top and bottom ends of the two lever structures (20); the reset elastic member (21) is connected to the inner wall of the guide pillar (3); and the ball column (22) protrudes from the surface of the guide pillar (3) and extends outward.

6. A valve sealing protection device based on gravity according to any one of claims 1, 2, 3 and 5, characterized in that: A limited position disc (23) is arranged on the top of the guide pillar (3), and a pressure sensor and a buzzer (24) are arranged in the sealing base (1). The pressure sensor is connected to the guide pillar (3) and the buzzer (24) respectively. When the guide pillar (3) acts on the pressure sensor with a pressure exceeding a preset value, the pressure sensor triggers the buzzer (24) to work.

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