Limiting structure of pneumatic and hydraulic diaphragm angle type mud valve

Abstract

The utility model relates to the technical field of mud valves. The pneumatic hydraulic diaphragm angle type mud valve limiting structure comprises a pneumatic hydraulic diaphragm angle type mud valve main body, a valve rod and a limiting part, wherein the pneumatic hydraulic diaphragm angle type mud valve main body is provided with a valve rod; the extension rod is connected with the end of the valve rod, the end, away from the valve rod, of the extension rod extends out of the top end of the pneumatic-hydraulic diaphragm angle type mud valve body, and a slot is formed in the side wall of the end, away from the valve rod, of the extension rod. A limiting switch contact is arranged at one end of the limiting switch connecting rod, a positioning mechanism is arranged at the other end of the limiting switch connecting rod, the middle area of the limiting switch connecting rod is connected with the top end of the pneumatic hydraulic diaphragm angle type mud valve body through a support, and the middle area of the limiting switch connecting rod is rotationally connected with the support. By means of the structure, when the valve rod is closed, signal transmission is conducted through the limiting switch, and the extension rod can be limited when the valve rod is in the closed state so that the valve rod connected with the extension rod can be prevented from releasing the current state.

Description

Technical Field

[0001] The utility model relates to the technical field of mud discharge valves, in particular to a pneumatic and hydraulic diaphragm angle type mud discharge valve limiting structure. Background Art

[0002] The traditional pneumatic and hydraulic diaphragm angle mud discharge valve is mainly composed of a valve body, upper and lower diaphragm cavities, a diaphragm, and a valve stem. It is widely used for mud discharge at the bottom of reaction sedimentation tanks in water purification projects.

[0003] Because the opening and closing of the pneumatic hydraulic diaphragm angle mud discharge valve is controlled by a two-position four-way mud discharge special solenoid valve through the automatic control system. Since the pneumatic hydraulic diaphragm angle mud discharge valve has no unlimited position device, when the duty personnel in the central control room open and close the mud discharge valve through the automatic control system, regardless of whether the mud discharge valve has a fault, it is impossible to monitor whether it has reached the open and closed state through the automatic control system. If there is no personnel to patrol and observe the on-site equipment, it may directly affect production and cause waste of water resources.

[0004] Secondly, since the mud discharge operation takes a long time every day and requires manual inspection, it will also cause waste of manpower and increase labor costs. Utility Model Content

[0005] The purpose of this utility model is to provide a pneumatic and hydraulic diaphragm angle mud discharge valve limiting structure to solve the above technical problems;

[0006] The utility model provides a pneumatic and hydraulic diaphragm angle type mud discharge valve limiting structure, comprising:

[0007] The pneumatic and hydraulic diaphragm angle mud discharge valve body has a valve stem;

[0008] An extension rod is connected to the end of the valve stem and extends out of the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body at one end away from the valve stem, and a slot is provided on the side wall of the end of the extension rod away from the valve stem;

[0009] A limit switch connecting rod, one end of which has a limit switch contact and the other end has a positioning mechanism, the middle area of ​​the limit switch connecting rod is connected to the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body through a bracket, and the middle area of ​​the limit switch connecting rod is rotatably connected to the bracket; wherein,

[0010] The limit switch connecting rod is in an initial state, and the limit switch contact is located in the length direction of the extension rod, so that when the extension rod moves along the length direction, it can contact the limit switch contact to trigger the limit switch action. At this time, the limit switch connecting rod is in a working state;

[0011] When the limit switch connecting rod is in a working state, the limit switch connecting rod is driven by the limit switch contact and rotates a certain angle with the connection point with the bracket as the axis. When the limit switch connecting rod rotates a certain angle, the positioning mechanism is inserted into the slot to form a limit for the extension rod.

[0012] In some practicable methods, a through hole is provided at the top of the pneumatic-hydraulic diaphragm angle mud discharge valve body, and a sealing rubber ring is provided at the through hole so that the sealing rubber ring can be used to seal the gap between the extension rod and the through hole of the pneumatic-hydraulic diaphragm angle mud discharge valve body; wherein, the sealing rubber ring is provided on the hole wall of the through hole.

[0013] In some embodiments, the slots are strip-shaped slots distributed along the circumference of the extension rod.

[0014] In some embodiments, the limit switch connecting rod is an "L"-shaped structure, including a long arm and a short arm, one end of the long arm is connected to one end of the short arm, and the other end is provided with a limit switch contact; the end of the short arm away from the long arm is a positioning mechanism; wherein,

[0015] The bent position of the limit switch connecting rod is rotatably connected to the bracket.

[0016] In some implementations, the long arm and the short arm are an integrated structure.

[0017] In some practicable embodiments, the limit switch contact is connected to the console via a line, so that when the limit switch contact is triggered, a trigger signal can be sent to the console via the line.

[0018] In some practicable embodiments, the end of the short arm away from the long arm is a sheet-like structure, forming the positioning mechanism; wherein, when the limit switch connecting rod is in a working state, the sheet-like structure is inserted into the slot.

[0019] In some practicable embodiments, the short arm includes a first short arm segment and a second short arm segment, one end of the first short arm segment is integrally formed with the long arm, and the other end is rotatably connected to the second short arm segment; the end of the second short arm segment away from the first short arm segment is a sheet-like structure; wherein,

[0020] When the limit switch connecting rod is in the initial state, one end of the second short arm section away from the first short arm section is overlapped with the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body, and the second short arm section forms an obtuse angle with the first short arm section.

[0021] In some practicable embodiments, the second short arm segment includes a second short arm segment I and a second short arm segment II, the second short arm segment I is rotatably connected to the first short arm segment, and the second short arm segment I is rotatably connected to the second short arm segment II; wherein,

[0022] When the limit switch connecting rod is in the initial state, the end of the second short arm section I away from the first short arm section is overlapped on the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body, and the second short arm section II is completely overlapped on the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body.

[0023] In some practicable embodiments, the weight of the first short arm section is greater than the weight of the second short arm; a limiting column is provided on the bracket;

[0024] When the limit switch connecting rod is in an initial state, the first short arm section overlaps the limit column with its own weight.

[0025] The beneficial effects of the utility model: The application provides a pneumatic and hydraulic diaphragm angle mud discharge valve limit structure, the pneumatic and hydraulic diaphragm angle mud discharge valve body has a valve stem; an extension rod is connected to the end of the valve stem, and extends out of the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body at one end away from the valve stem, and a slot is provided on the side wall of the end of the extension rod away from the valve stem; a limit switch connecting rod, one end of the limit switch connecting rod has a limit switch contact, and the other end has a positioning mechanism, the middle area of ​​the limit switch connecting rod is connected to the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body through a bracket, and the limit switch connecting rod The middle region of the connecting rod is rotatably connected to the bracket; wherein, when the limit switch connecting rod is in an initial state, the limit switch contact is located in the length direction of the extension rod, so that when the extension rod moves along the length direction, it can contact the limit switch contact and trigger the limit switch action. At this time, the limit switch connecting rod is in an operating state; when the limit switch connecting rod is in an operating state, the limit switch connecting rod is driven by the limit switch contact to rotate a certain angle with the connection point with the bracket as the axis. When the limit switch connecting rod rotates a certain angle, the positioning mechanism is inserted into the slot to form a limit for the extension rod. Through the above structure, not only is signal transmission by the limit switch achieved when the valve stem is closed, but the extension rod can also be limited in the valve stem closed state to prevent the valve stem connected to the extension rod from releasing the current state. In other words, the valve stem is prevented from returning to its original position (return refers to the valve stem being open) when the pneumatic and hydraulic diaphragm angle mud discharge valve is open. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of a pneumatic and hydraulic diaphragm angle mud discharge valve limiting structure of the utility model.

[0028] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0029] Figure 3 for Figure 2 Enlarged view of point B in the middle;

[0030] Figure 4 for Figure 3 Enlarged view of point C in the middle;

[0031] Figure 5 for Figure 3 Schematic diagram of the middle extension rod after moving in the direction indicated by the arrow.

[0032] Description of reference numerals:

[0033] 1. Pneumatic and hydraulic diaphragm angle mud valve body; 11. Through hole; 12. Valve stem; 13. Sealing rubber ring;

[0034] 2. Extension rod; 21. Slot;

[0035] 3. Limit switch connecting rod; 31. Limit switch contact; 32. Positioning mechanism; 33. Long arm; 34. Short arm; 341. First short arm segment; 342. Second short arm segment; 3421. Second short arm segment I; 3422. Second short arm segment II;

[0036] 4. Bracket; 41. Limit column. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. 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.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] See Figures 1 to 5 The present application provides a pneumatic-hydraulic diaphragm angle mud discharge valve limit structure, including a pneumatic-hydraulic diaphragm angle mud discharge valve body 1, an extension rod 2 and a limit switch connecting rod 3, aiming to solve the problem that the traditional mud discharge valve cannot accurately monitor its opening and closing status during operation.

[0041] The pneumatic-hydraulic diaphragm angle mud discharge valve body 1 includes a valve stem 12 for controlling the opening and closing of the valve. A through hole 11 is provided at the top of the pneumatic-hydraulic diaphragm angle mud discharge valve body 1. A sealing rubber ring 13 is provided at the through hole 11 to seal the gap between the extension rod 2 and the through hole 11 of the pneumatic-hydraulic diaphragm angle mud discharge valve body 1. The sealing rubber ring 13 is provided on the wall of the through hole 11.

[0042] The extension rod 2 is connected to the end of the valve stem 12 and extends out of the top of the pneumatic and hydraulic diaphragm angle mud valve body 1 at the end away from the valve stem 12. A slot 21 is provided on the side wall of the end of the extension rod 2 away from the valve stem 12. The slot 21 is a strip-shaped groove distributed along the circumference of the extension rod 2.

[0043] The limit switch connecting rod 3 has a limit switch contact 31 at one end and a positioning mechanism 32 at the other end. The middle area of ​​the limit switch connecting rod 3 is connected to the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body 1 through the bracket 4, and the middle area of ​​the limit switch connecting rod 3 is rotatably connected to the bracket 4 to realize the limit function.

[0044] Specifically, when the limit switch connecting rod 3 is in the initial state, the limit switch contact 31 is located in the length direction of the extension rod 2, so that when the extension rod 2 moves along the length direction, it can contact the limit switch contact 31 and trigger the limit switch action. At this time, the limit switch connecting rod 3 is in the working state.

[0045] When the limit switch connecting rod 3 is in the operating state, it is driven by the limit switch contact 31 and rotates a certain angle about the connection point with the bracket 4. When the limit switch connecting rod 3 rotates a certain angle, the positioning mechanism 32 is inserted into the slot 21, forming a limit for the extension rod 2. It can be understood that the initial state of the limit switch connecting rod 3 means that the valve stem 12 of the pneumatic and hydraulic diaphragm angle mud discharge valve body 1 is in the closed state, and the operating state of the limit switch connecting rod 3 means that the valve stem 12 of the pneumatic and hydraulic diaphragm angle mud discharge valve body 1 is in the open state.

[0046] It should be noted that the limit switch connecting rod 3 is an L-shaped structure, comprising a long arm 33 and a short arm 34. One end of the long arm 33 is connected to one end of the short arm 34, and the other end is provided with a limit switch contact 31. The end of the short arm 34, away from the long arm 33, is a positioning mechanism 32. The bent portion of the limit switch connecting rod 3 is rotatably connected to the bracket 4. Furthermore, the long arm 33 and the short arm 34 are an integrated structure.

[0047] The limit switch contact 31 is connected to the control console via a line, so that when the limit switch contact 31 is triggered, a trigger signal can be sent to the control console via the line. The control console can be a computer for receiving the signal generated by the limit switch contact 31 so that the operator can observe the working status of the valve stem 12 through the control console.

[0048] One end of the short arm 34 away from the long arm 33 is a sheet-like structure, forming the positioning mechanism 32 ; wherein, when the limit switch connecting rod 3 is in a working state, the sheet-like structure is inserted into the slot 21 .

[0049] It should be noted that the short arm 34 includes a first short arm section 341 and a second short arm section 342, one end of the first short arm section 341 is integrally formed with the long arm 33, and the other end is rotatably connected to the second short arm section 342; the end of the second short arm section 342 away from the first short arm section 341 is a sheet-like structure; wherein, when the limit switch connecting rod 3 is in the initial state, the end of the second short arm section 342 away from the first short arm section 341 is overlapped on the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body 1, and the second short arm section 342 forms an obtuse angle with the first short arm section 341.

[0050] Specifically, the short arm 34 forms a two-section structure. In this way, when the second short arm section 342 can form an obtuse angle with the first short arm section 341 , the second short arm section 342 can be more conveniently inserted into the slot 21 .

[0051] Furthermore, the second short arm segment 342 is split again, that is, the second short arm segment 342 includes a second short arm segment I 3421 and a second short arm segment II 3422, the second short arm segment I 3421 is rotatably connected to the first short arm segment 341, and the second short arm segment I 3421 is rotatably connected to the second short arm segment II 3422; wherein, the limit switch connecting rod 3 is in the initial state, the end of the second short arm segment I 3421 away from the first short arm segment 341 is overlapped on the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body 1, and the second short arm segment II 3422 is entirely overlapped on the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body 1.

[0052] Specifically, when the second short arm section 341 includes the second short arm section I and the second short arm section II, the second short arm section II 3422 can abut against the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body 1, avoiding forming an angle with the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body 1, which could lead to a loose retaining effect after insertion into the slot 21. In other words, when the second short arm section II 3422 is inserted into the slot 21, the forces exerted by the two are perpendicular, resulting in a more effective retaining effect.

[0053] In one embodiment, in order to ensure that the limit switch connecting rod 3 is in the initial state, one end of the first short arm section 341 having the limit switch contact 31 can be located on the reciprocating motion path of the extension rod 2, and the weight of the first short arm section 341 is greater than the weight of the second short arm section 342; a limit column 41 is provided on the bracket 4, so that when the limit switch connecting rod 3 is in the initial state, the first short arm section 341 overlaps the limit column 41 with its own weight.

[0054] It should be noted that when the bracket 4 is a plate, the limit column 41 is arranged perpendicular to the bracket 4. In this way, when the first short arm section 341 swings downward by its own weight, it can overlap on the column wall of the limit column 41. The limit column 41 prevents the first short arm section 341 from continuing to swing downward, thereby ensuring that the limit switch contact 31 of the first short arm section 341 is located on the road in the length direction of the extension rod 2.

[0055] Example

[0056] Operation process

[0057] Opening the mud discharge valve: The operator sends a signal at the control console to move the valve stem 12 and extension rod 2 until the limit switch contact 31 is triggered. At this time, the limit switch connecting rod 3 rotates, and the positioning mechanism 32 inserts into the slot 21, confirming that the mud discharge valve is fully open.

[0058] Limit confirmation: When the limit switch contact 31 is triggered, the console receives the signal and confirms the open state of the mud discharge valve, realizing remote monitoring.

[0059] Monitoring status: The control console continuously monitors the status of the limit switch contact 31 to ensure the safety and reliability of the mud discharge valve during operation.

[0060] Closing the mud discharge valve: To close the mud discharge valve, the operator sends a reverse signal from the control console, driving the valve stem 12 and extension rod 2 in the opposite direction until the mud discharge valve is closed. The limit switch connecting rod 3 then rotates, and the positioning mechanism 32 withdraws from the slot 21, confirming that the mud discharge valve is fully closed.

[0061] Driving the movement of the valve stem 12 is a conventional technique and is not described in detail in this application.

[0062] In summary, the above structural design enables precise control and remote monitoring of the pneumatic and hydraulic diaphragm angle mud valve, improving operational safety and efficiency. Furthermore, this structure reduces the need for manual inspections, lowering labor costs and preventing water waste caused by undetected mud valve failures.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pneumatic and hydraulic diaphragm angle mud valve limiting structure, characterized in that: include: The pneumatic and hydraulic diaphragm angle mud discharge valve body has a valve stem; An extension rod is connected to the end of the valve stem and extends out of the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body at one end away from the valve stem, and a slot is provided on the side wall of the end of the extension rod away from the valve stem; A limit switch connecting rod, one end of which has a limit switch contact and the other end has a positioning mechanism, the middle area of ​​the limit switch connecting rod is connected to the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body through a bracket, and the middle area of ​​the limit switch connecting rod is rotatably connected to the bracket; wherein, The limit switch connecting rod is in an initial state, and the limit switch contact is located in the length direction of the extension rod, so that when the extension rod moves along the length direction, it can contact the limit switch contact to trigger the limit switch action. At this time, the limit switch connecting rod is in a working state; When the limit switch connecting rod is in a working state, the limit switch connecting rod is driven by the limit switch contact and rotates a certain angle with the connection point with the bracket as the axis. When the limit switch connecting rod rotates a certain angle, the positioning mechanism is inserted into the slot to form a limit for the extension rod.

2. The pneumatic and hydraulic diaphragm angle mud valve limiting structure according to claim 1 is characterized in that: A through hole is provided at the top of the pneumatic-hydraulic diaphragm angle mud discharge valve body, and a sealing rubber ring is provided at the through hole so that the sealing rubber ring can be used to seal the gap between the extension rod and the through hole of the pneumatic-hydraulic diaphragm angle mud discharge valve body; wherein the sealing rubber ring is provided on the hole wall of the through hole.

3. The pneumatic and hydraulic diaphragm angle mud discharge valve limiting structure according to claim 1 is characterized in that: The slots are strip-shaped slots distributed along the circumference of the extension rod.

4. The pneumatic and hydraulic diaphragm angle mud discharge valve limiting structure according to claim 1 is characterized in that: The limit switch connecting rod is an "L"-shaped structure, including a long arm and a short arm, one end of the long arm is connected to one end of the short arm, and the other end is provided with a limit switch contact; the end of the short arm away from the long arm is a positioning mechanism; wherein, The bent position of the limit switch connecting rod is rotatably connected to the bracket.

5. The pneumatic and hydraulic diaphragm angle mud discharge valve limiting structure according to claim 4 is characterized in that: The long arm and the short arm are an integrated structure.

6. The pneumatic and hydraulic diaphragm angle mud discharge valve limiting structure according to claim 5 is characterized in that: The limit switch contact is connected to the console via a line, so that when the limit switch contact is triggered, a trigger signal can be sent to the console via the line.

7. The pneumatic and hydraulic diaphragm angle mud discharge valve limiting structure according to claim 6 is characterized in that: One end of the short arm away from the long arm is a sheet-like structure, forming the positioning mechanism; wherein, when the limit switch connecting rod is in a working state, the sheet-like structure is inserted into the slot.

8. The pneumatic and hydraulic diaphragm angle mud discharge valve limiting structure according to claim 7 is characterized in that: The short arm includes a first short arm segment and a second short arm segment. One end of the first short arm segment is integrally formed with the long arm, and the other end is rotatably connected to the second short arm segment. The end of the second short arm segment away from the first short arm segment is a sheet-like structure. When the limit switch connecting rod is in the initial state, one end of the second short arm section away from the first short arm section is overlapped with the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body, and the second short arm section forms an obtuse angle with the first short arm section.

9. The pneumatic and hydraulic diaphragm angle mud discharge valve limiting structure according to claim 8 is characterized in that: The second short arm segment includes a second short arm segment I and a second short arm segment II, the second short arm segment I is rotatably connected to the first short arm segment, and the second short arm segment I is rotatably connected to the second short arm segment II; wherein, When the limit switch connecting rod is in the initial state, the end of the second short arm section I away from the first short arm section is overlapped on the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body, and the second short arm section II is completely overlapped on the top of the pneumatic and hydraulic diaphragm angle mud discharge valve body.

10. The pneumatic and hydraulic diaphragm angle mud discharge valve limiting structure according to claim 9 is characterized in that: The weight of the first short arm section is greater than the weight of the second short arm; a limiting column is provided on the bracket; When the limit switch connecting rod is in an initial state, the first short arm section overlaps the limit column with its own weight.

Images