Pneumatic anti-scour regulating valve

Abstract

The utility model discloses a pneumatic anti-scour adjusting valve, and relates to the technical field of pneumatic adjusting valves. The check valve comprises a valve body, the two ends of the valve body are provided with an inlet end and an outlet end respectively, two symmetrically-arranged fixing barrels fixedly penetrate through the outer wall of the valve body, sliding blocks are connected to the inner walls of the two fixing barrels in a sliding mode, and positioning blocks are integrally formed at one ends of the two sliding blocks; the valve seat is fixedly arranged at the top end of the valve body, an air cylinder is fixedly arranged at the top end of the valve seat, a valve rod penetrates through the valve seat in a sliding mode, a piston rod of the air cylinder is fixed to the top end of the valve rod, the bottom end of the valve rod extends into the valve body and is fixedly provided with a valve clack, and two symmetrically-arranged installation blocks are fixedly arranged on the surface of the valve clack. According to the adjusting valve, the valve clacks with different heights can be positioned, the positioning effect on the valve clacks is improved, the structural strength can be improved through the reinforcing rod, the anti-scouring capacity of the valve clacks is improved, the sealing performance of the adjusting valve can be guaranteed, and fluid leakage is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of pneumatic regulating valves, in particular to a pneumatic anti-scouring regulating valve. Background Art

[0002] The pneumatic control valve uses compressed gas as the power source and the cylinder as the actuator. It uses accessories such as valve disc positioners, converters, solenoid valves, position-holding valves, gas storage tanks, gas filters, etc. to drive the valve disc to achieve switching or proportional regulation. However, the traditional pneumatic control valve has the following shortcomings when used:

[0003] 1. The valve disc lacks a positioning mechanism. Under the long-term flushing of the fluid, the valve disc is prone to loosening, which reduces the sealing effect.

[0004] For this reason, we proposed a pneumatic anti-scouring regulating valve. Utility Model Content

[0005] The utility model aims to solve the problem that the valve disc lacks a positioning mechanism in the prior art, and the valve disc is prone to loosening under long-term flushing of the fluid, thereby reducing the sealing effect, and proposes a pneumatic anti-scouring regulating valve.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] Pneumatic anti-scour regulating valve, including:

[0008] A valve body, wherein the two ends of the valve body are respectively provided with an inlet end and an outlet end, the outer wall of the valve body is fixedly penetrated by two symmetrically arranged fixing cylinders, the inner walls of the two fixing cylinders are slidably connected with sliders, and one end of the two sliders is integrally formed with a positioning block;

[0009] A valve seat, wherein the valve seat is fixedly mounted on the top of the valve body, a cylinder is fixedly mounted on the top of the valve seat, a valve stem is slidably penetrated in the valve seat, a piston rod of the cylinder is fixed to the top of the valve stem, a bottom end of the valve stem extends into the valve body and is fixedly mounted with a valve disc, two symmetrically arranged mounting blocks are fixedly mounted on the surface of the valve disc, a plurality of positioning grooves are provided on one side of the two mounting blocks, and the positioning grooves and the positioning blocks cooperate to position the valve disc;

[0010] The regulating mechanism is arranged on one side of the valve seat and is used for regulating the sliding block.

[0011] In a possible design, the adjustment mechanism includes an extension plate and two rotating shafts. The extension plate is fixed on one side of the valve seat. A dual-axis motor is fixed on the surface of the extension plate. The two rotating shafts are rotatably connected to one side of two fixed cylinders respectively. A screw is fixed on one side of the two rotating shafts. The two screws are respectively threadedly connected to the two sliders. Synchronous wheels are fixed on the two output shafts of the dual-axis motor and the outer walls of the two rotating shafts. A synchronous belt is transmission-connected between two adjacent synchronous wheels.

[0012] In a possible design, at least two sealing grooves are formed on the inner wall of the fixing tube, and sealing rings are provided in each of the plurality of sealing grooves to improve the sealing performance.

[0013] In a possible design, a slope is provided on one side of the positioning block to guide the positioning block into the positioning groove.

[0014] In a possible design, an annular groove is provided on the inner wall of the valve body, and the valve flap is matched with the annular groove.

[0015] In a possible design, two reinforcement rods are fixed between the two mounting blocks, and the valve stem is located between the two reinforcement rods.

[0016] In the present application, when in use, the cylinder is started to drive the valve stem to move, and then the valve disc is driven to rise to a corresponding height, and then the dual-axis motor is started. Under the action of the synchronous wheel and the synchronous belt, the dual-axis motor drives the rotating shaft and the screw to rotate, and then drives the slider to slide, so that the positioning block and the positioning groove are docked to position the valve disc. At this time, the fluid flows in from the inlet end and finally flows out from the outlet end.

[0017] Beneficial effects:

[0018] In the utility model, the pneumatic anti-scour regulating valve is provided with multiple structures such as a mounting block, a positioning groove and a positioning block. In the process from closing the valve disc to opening the valve disc, the multiple positioning grooves and the positioning blocks cooperate to realize the positioning of valve discs of different heights, thereby improving the positioning effect of the valve disc, and the reinforcement rod can reinforce the mounting plate, thereby improving the strength of the structure, and further improving the anti-scour ability of the valve disc;

[0019] In the utility model, the pneumatic anti-scouring regulating valve can ensure the sealing performance of the regulating valve and prevent fluid leakage through the arrangement of the sealing groove and the sealing ring.

[0020] In the utility model, valve flaps at different heights can be positioned, thereby improving the positioning effect of the valve flap, and the reinforcement rod can be used to increase the structural strength, thereby improving the anti-scouring ability of the valve flap, and can ensure the sealing of the regulating valve to prevent fluid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of a three-dimensional structure of an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of a cross-sectional structure of a valve body according to an embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the adjustment mechanism of an embodiment of the utility model;

[0025] Figure 4 It is a schematic cross-sectional structure diagram of a fixing cylinder according to an embodiment of the utility model.

[0026] In the figure: 1. valve body; 2. inlet end; 3. outlet end; 4. reinforcement rod; 5. valve seat; 6. cylinder; 7. valve stem; 8. valve disc; 9. mounting block; 10. annular groove; 11. extension plate; 12. positioning groove; 13. fixing cylinder; 14. rotating shaft; 15. slider; 16. positioning block; 17. inclined surface; 18. sealing ring; 19. screw; 20. dual-axis motor; 21. synchronous wheel; 22. synchronous belt. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0030] Example 1

[0031] Reference Figure 1-Figure 4 The pneumatic anti-scouring regulating valve is used in the field of pneumatic regulating valves and includes a valve body 1, a valve seat 5 and a regulating mechanism.

[0032] The valve body 1 is the main structure of the regulating valve, and has an inlet end 2 and an outlet end 3 for fluid in and out. The outer wall of the valve body 1 is fixedly penetrated by two symmetrically arranged fixed cylinders 13, and the inner walls of the fixed cylinders 13 are slidably connected with sliders 15, which can slide in the fixed cylinders 13 to adjust the position. A positioning block 16 is integrally formed at one end of the slider 15, and the positioning block 16 is used to cooperate with the positioning groove 12 to realize the positioning of the valve disc 8.

[0033] The valve seat 5 is fixed at the top of the valve body 1 as a basis for supporting and installing other components. A cylinder 6 is fixed at the top of the valve seat 5, and the cylinder 6 is used to drive the valve stem 7 to move up and down. The valve stem 7 slides through the valve seat 5, and the valve stem 7 connects the piston rod of the cylinder 6 and the valve disc 8 to achieve power transmission. Two symmetrically arranged mounting blocks 9 are fixed on the surface of the valve disc 8, and a plurality of positioning grooves 12 are opened on one side of the two mounting blocks 9. The positioning grooves 12 cooperate with the positioning blocks 16 to ensure the stability of the valve disc 8 when it is in a specific position.

[0034] The adjusting mechanism is arranged on one side of the valve seat 5, and its main function is to adjust the position of the slider 15, so as to realize the positioning of the valve disc 8. The adjusting mechanism includes an extension plate 11 and two rotating shafts 14. The extension plate 11 is fixedly arranged on one side of the valve seat 5, and provides a platform for installing the dual-axis motor 20. The two output shafts of the dual-axis motor 20 and the outer walls of the two rotating shafts 14 are fixedly provided with synchronous wheels 21, and the two adjacent synchronous wheels 21 are both connected by a synchronous belt 22 to ensure the synchronous rotation of the two rotating shafts 14. The two rotating shafts 14 are respectively rotatably connected to one side of the two fixed cylinders 13, and the rotation of the rotating shafts 14 can drive the screw 19 in the fixed cylinder 13 to rotate. The two screws 19 are respectively threadedly connected to the two sliders 15. When the screw 19 rotates, the slider 15 will slide in the fixed cylinder 13 to realize the position adjustment.

[0035] Example 2

[0036] Improved on the basis of Example 1:

[0037] In order to improve the sealing performance of the adjustment mechanism, at least two sealing grooves are provided on the inner wall of the fixed cylinder 13 , and sealing rings 18 are arranged in the plurality of sealing grooves to ensure that there is no fluid leakage when the slider 15 slides.

[0038] In order to facilitate the positioning block 16 to enter the positioning groove 12, a slope 17 is provided on one side of the positioning block 16 to play a guiding role. When the slider 15 slides to a suitable position, the slope 17 will guide the positioning block 16 to enter the positioning groove 12 smoothly.

[0039] In order to improve the sealing performance of the valve flap 8 in the closed state, an annular groove 10 is provided on the inner wall of the valve body 1. The valve flap 8 is matched with the annular groove 10 to ensure that the valve flap 8 can fit tightly against the inner wall of the valve body 1 when closed to prevent fluid leakage.

[0040] In order to increase the structural strength of the valve flap 8, two reinforcement rods 4 are fixed between the two mounting blocks 9, and the valve stem 7 is located between the two reinforcement rods 4. The reinforcement rods 4 can effectively prevent the valve flap 8 from being deformed or damaged when subjected to scouring force.

[0041] It should be noted that, in the description of this specification, descriptions such as "first", "second", etc. are merely used to distinguish between various features and have no actual order or directional meaning, and this application is not limited to this.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. Pneumatic anti-scour regulating valve, characterized in that: include: A valve body (1), wherein the two ends of the valve body (1) are respectively provided with an inlet end (2) and an outlet end (3); the outer wall of the valve body (1) is fixedly penetrated by two symmetrically arranged fixed cylinders (13); the inner walls of the two fixed cylinders (13) are slidably connected with sliders (15); and one end of the two sliders (15) is integrally formed with a positioning block (16); A valve seat (5), wherein the valve seat (5) is fixedly arranged at the top end of the valve body (1), a cylinder (6) is fixedly arranged at the top end of the valve seat (5), a valve stem (7) is slidably penetrated in the valve seat (5), a piston rod of the cylinder (6) and the top end of the valve stem (7) are fixed, the bottom end of the valve stem (7) extends into the valve body (1) and is fixedly arranged with a valve flap (8), two symmetrically arranged mounting blocks (9) are fixedly arranged on the surface of the valve flap (8), a plurality of positioning grooves (12) are provided on one side of the two mounting blocks (9), and the positioning grooves (12) and the positioning blocks (16) cooperate with each other to position the valve flap (8); An adjusting mechanism is arranged on one side of the valve seat (5) and is used to adjust the slider (15).

2. The pneumatic anti-scour regulating valve according to claim 1, characterized in that: The regulating mechanism comprises an extension plate (11) and two rotating shafts (14); the extension plate (11) is fixedly arranged on one side of the valve seat (5); a double-shaft motor (20) is fixedly arranged on the surface of the extension plate (11); the two rotating shafts (14) are respectively rotatably connected to one side of two fixed cylinders (13); a screw rod (19) is fixedly arranged on one side of the two rotating shafts (14); the two screw rods (19) are respectively threadedly connected to the two sliders (15); two output shafts of the double-shaft motor (20) and the outer walls of the two rotating shafts (14) are fixedly arranged with synchronous wheels (21); and a synchronous belt (22) is transmission-connected between two adjacent synchronous wheels (21).

3. The pneumatic anti-scour regulating valve according to claim 2, characterized in that: The inner wall of the fixing cylinder (13) is provided with at least two sealing grooves, and sealing rings (18) are provided in the plurality of sealing grooves to improve the sealing performance.

4. The pneumatic anti-scour regulating valve according to claim 3, characterized in that: One side of the positioning block (16) is provided with an inclined surface (17) for guiding the positioning block (16) into the positioning groove (12).

5. The pneumatic anti-scour regulating valve according to claim 4, characterized in that: The inner wall of the valve body (1) is provided with an annular groove (10), and the valve flap (8) is matched with the annular groove (10).

6. The pneumatic anti-scour regulating valve according to claim 5, characterized in that: Two reinforcement rods (4) are fixedly arranged between the two mounting blocks (9), and the valve stem (7) is located between the two reinforcement rods (4).

Images