Pneumatic control proportioning valve

Abstract

The utility model discloses a pneumatic control proportioning valve which comprises a left valve body, a right valve body, an adjusting disc, a pneumatic assembly and a positioning assembly, the left valve body and the right valve body are detachably and fixedly connected through a bolt, and the left valve body and the right valve body are buckled to form a sealing cavity. The adjusting disc is rotationally connected into the sealing cavity and used for blocking or communicating pipelines on the two sides, the positioning assembly is arranged at the bottom end of the sealing cavity, the positioning assembly is matched with the limiting groove to position the position of the adjusting disc, and the pneumatic assembly is arranged at the outer end, corresponding to one side of the ratchet, of the valve body and used for stirring the ratchet to drive the adjusting disc to rotate. The fixed valve opening degree is obtained by using different adjusting through holes, and the optimal adjusting valve opening degree is obtained without repeated testing in the whole adjusting process, so that the effect of accurately adjusting the liquid proportion is achieved; the reciprocating air cylinder drives the adjusting disc to change the opening degree of the valve, the valve does not need an electrical control element in the whole action process, and therefore electric arcs or static electricity are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a pneumatically controlled proportional regulating valve. Background Art

[0002] At present, in the process of mixing liquid raw materials in chemical production, different liquids need to be mixed, usually by manually operating the control valves on the pipeline, and manually controlling the flow of multiple control valves to achieve the mixed output of the liquids; however, the above control method requires too many valves to be controlled, and the mixing ratio of the liquids cannot be accurately controlled manually, and repeated tests are required to obtain the optimal regulating valve opening; and some chemical liquid raw materials are flammable and volatile, and are prone to explosion when encountering electric arcs or static electricity, so the driving method of the regulating valve cannot use electrical control components. Therefore, a pneumatic control proportional regulating valve is designed to solve the above problems. Utility Model Content

[0003] In view of the shortcomings of the existing regulating valves, the purpose of the utility model is to provide a pneumatically controlled proportional regulating valve, which has the advantages of precise proportional adjustment and pneumatic control to prevent the generation of arcs or static electricity.

[0004] To achieve the above-mentioned purpose, a technical solution adopted by the utility model is: a pneumatically controlled proportional regulating valve, comprising a left valve body, a right valve body, an adjusting disk, a pneumatic component and a positioning component, wherein the left valve body and the right valve body are detachably fixedly connected by bolts, the left valve body and the right valve body are buckled to form a sealing cavity, the adjusting disk is rotatably connected in the sealing cavity for blocking or connecting pipelines on both sides, the end face of the adjusting disk has a plurality of adjusting through holes of different diameters and arranged at equal angles, the center of the end face of the adjusting disk also has a rotating shaft extending from the left valve body and the right valve body, the outer edge of the rotating shaft on one side of the adjusting disk has a ratchet, the end face of the rotating shaft on the other side of the adjusting disk has a check digit for indicating the opening, the outer edge of the end of the adjusting disk also has a plurality of limiting grooves arranged at equal angles, the positioning component is arranged at the bottom end of the sealing cavity, the positioning component cooperates with the limiting groove to position the adjusting disk, the pneumatic component is arranged at the outer end of the valve body on the side corresponding to the ratchet, and the pneumatic component is used to turn the ratchet to drive the adjusting disk to rotate;

[0005] Preferably, the number of the limiting grooves on the outer edge of the adjusting disk end is twice that of the adjusting through holes;

[0006] Preferably, the positioning assembly includes a positioning pin and a spring, the positioning pin is slidably connected to the bottom end of the sealing cavity, the spring is arranged between the positioning pin and the bottom end of the sealing cavity, and the spring is used to force the positioning pin to insert into the limiting groove for limiting;

[0007] Preferably, the pneumatic assembly includes a reciprocating cylinder, a torsion spring and a driving rod, the reciprocating cylinder is fixedly connected to the outer side of the right valve body, the telescopic end of the reciprocating cylinder is hinged with the driving rod, the torsion spring is arranged between the telescopic end of the reciprocating cylinder and the driving rod, the torsion spring is used to force the driving rod to fit the ratchet on the outer edge of the rotating shaft of the adjusting disk, and the ratchet is driven by the driving rod to drive the adjusting disk to rotate after the reciprocating cylinder is extended;

[0008] Further preferably, the reciprocating cylinder single-drive action is to extend and then retract, and the reciprocating cylinder single-drive adjustment disk rotation angle is half of the angle between the two adjustment through holes;

[0009] Preferably, the diameter of the adjustment through hole on the end surface of the adjustment disk decreases clockwise or counterclockwise; by using different adjustment through holes to obtain a fixed valve opening, it is not necessary to repeatedly test to obtain the optimal adjustment valve opening during the entire adjustment process;

[0010] The beneficial effects of the utility model are: 1. By using different adjustment holes to obtain a fixed valve opening, there is no need to repeatedly test to obtain the optimal adjustment valve opening during the entire adjustment process, thereby achieving the effect of accurately adjusting the liquid ratio; 2. By driving the adjustment disk through a reciprocating cylinder to change the valve opening, the valve does not require electrical control components during the entire action process, thereby preventing the generation of electric arcs or static electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a cross-sectional structural view of the utility model;

[0012] Figure 2 It is the left view of the utility model;

[0013] Figure 3 It is the right view of the utility model;

[0014] Figure 4 This is a front view of the adjustment disk of the utility model;

[0015] Figure 5 For this utility model Figure 3 The middle reciprocating cylinder is in the retracted state;

[0016] Figure 6 For this utility model Figure 3 The middle reciprocating cylinder is in the extended state. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0018] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0019] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "provided with", and "set" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] See also Figures 1 to 6 , the utility model embodiment includes:

[0021] A pneumatically controlled proportional regulating valve, comprising a left valve body 1, a right valve body 2, an adjusting disk 3, a pneumatic assembly 4 and a positioning assembly 5, wherein the left valve body 1 and the right valve body 2 are detachably fixedly connected by bolts, the left valve body 1 and the right valve body 2 are buckled to form a sealed cavity 6, the adjusting disk 3 is rotatably connected in the sealed cavity 6 to block or connect the pipelines on both sides, the end face of the adjusting disk 3 has a plurality of adjusting through holes 31 with different diameters and equal angles, and the center of the end face of the adjusting disk 3 also has a portion extending from the left valve body 1 and the right valve body 2, the outer edge of the rotating shaft 32 on one side of the adjusting disk 3 has a ratchet 7, the end face of the rotating shaft 32 on the other side of the adjusting disk 3 has a check numeral 8 for indicating the opening, the outer edge of the end of the adjusting disk 3 also has a plurality of limit grooves 33 arranged at equal angles, the positioning component 5 is arranged at the bottom end of the sealing cavity 6, the positioning component 5 cooperates with the limit groove 33 to locate the position of the adjusting disk 3, the pneumatic component 4 is arranged at the outer end of the valve body on the side corresponding to the ratchet 7, and the pneumatic component 4 is used to turn the ratchet 7 to drive the adjusting disk 3 to rotate;

[0022] Preferably, the number of the limiting grooves 33 on the outer edge of the adjusting disk 3 is twice that of the adjusting through holes 31;

[0023] Preferably, the positioning assembly 5 includes a positioning pin 51 and a spring 52, the positioning pin 51 is slidably connected to the bottom end of the sealing cavity 6, the spring 52 is arranged at the positioning pin 51 and the bottom end of the sealing cavity 6, and the spring 52 is used to force the positioning pin 51 to insert into the limiting groove 33 for limiting;

[0024] Preferably, the pneumatic assembly 4 includes a reciprocating cylinder 41, a torsion spring 42 and a driving rod 43. The reciprocating cylinder 41 is fixedly connected to the outer side of the right valve body 2. The telescopic end of the reciprocating cylinder 41 is hinged with the driving rod 43. The torsion spring 42 is arranged between the telescopic end of the reciprocating cylinder 41 and the driving rod 43. The torsion spring 42 is used to force the driving rod 43 to fit the ratchet 7 on the outer edge of the rotating shaft 32 of the adjusting disk 3. After the reciprocating cylinder 41 is extended, the driving rod 43 drives the ratchet 7 to rotate the adjusting disk 3;

[0025] Further preferably, the reciprocating cylinder 41 is driven to extend and then retract in a single drive, and the reciprocating cylinder 41 drives the adjustment disk 3 to rotate at an angle equal to half of the angle between the two adjustment holes 31;

[0026] Preferably, the diameter of the adjusting through hole 31 on the end surface of the adjusting disk 3 decreases clockwise or counterclockwise; by using different adjusting through holes 31 to obtain a fixed valve opening, it is not necessary to repeatedly test to obtain the optimal regulating valve opening during the entire adjustment process;

[0027] Through the above settings, in the actual working process, its specific working principle is as follows:

[0028] A proportional regulating valve is installed at the outlet of the chemical liquid that needs to be proportioned, and the reciprocating cylinder 41 is connected to the external air source through the air pipe. When the valve opening needs to be adjusted, the external air source is started, and the reciprocating cylinder 41 performs a single cycle driving action. When the reciprocating cylinder 41 is extended, the positioning pin 51 is first compressed by the outer edge of the adjusting disk 3. When the reciprocating cylinder 41 is fully extended, the positioning pin 51 is embedded in the limiting groove 33 on the outer edge of the adjusting disk 3 under the action of the spring 52, thereby limiting the adjusting disk 3. By continuously starting the reciprocating cylinder 41 for a single driving action and observing the arrow corresponding to the check number 8 on the end face of the rotating shaft 32 of the adjusting disk 3, it is confirmed that the adjusting disk 3 is rotated to the required valve opening;

[0029] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pneumatically controlled proportional control valve, characterized in that: The present invention comprises a left valve body, a right valve body, an adjusting disk, a pneumatic component and a positioning component, wherein the left valve body and the right valve body are detachably fixedly connected by bolts, the left valve body and the right valve body are buckled to form a sealing cavity, the adjusting disk is rotatably connected in the sealing cavity for blocking or connecting pipelines on both sides, the end face of the adjusting disk has a plurality of adjusting through holes of different diameters and arranged at equal angles, the center of the end face of the adjusting disk also has a rotating shaft extending from the left valve body and the right valve body, the outer edge of the rotating shaft on one side of the adjusting disk has a ratchet, the end face of the rotating shaft on the other side of the adjusting disk has a check digit for indicating the opening, the outer edge of the end of the adjusting disk also has a plurality of limiting grooves arranged at equal angles, the positioning component is arranged at the bottom end of the sealing cavity, the positioning component cooperates with the limiting groove to position the adjusting disk, the pneumatic component is arranged at the outer end of the valve body on the side corresponding to the ratchet, and the pneumatic component is used to turn the ratchet to drive the adjusting disk to rotate.

2. A pneumatically controlled proportional regulating valve according to claim 1, characterized in that: The number of the limiting grooves on the outer edge of the adjusting disk end is twice that of the adjusting through holes.

3. A pneumatically controlled proportional regulating valve according to claim 1, characterized in that: The positioning assembly includes a positioning pin and a spring. The positioning pin is slidably connected to the bottom end of the sealing cavity. The spring is arranged between the positioning pin and the bottom end of the sealing cavity. The spring is used to force the positioning pin to insert into the limiting groove for limiting.

4. A pneumatically controlled proportional regulating valve according to claim 1, characterized in that: The pneumatic assembly includes a reciprocating cylinder, a torsion spring and a driving rod. The reciprocating cylinder is fixedly connected to the outer side of the right valve body. The telescopic end of the reciprocating cylinder is hinged with the driving rod. The torsion spring is arranged between the telescopic end of the reciprocating cylinder and the driving rod. The torsion spring is used to force the driving rod to fit the ratchet on the outer edge of the rotating shaft of the adjusting disk. After the reciprocating cylinder is extended, the driving rod drives the ratchet to drive the adjusting disk to rotate.

5. A pneumatically controlled proportional regulating valve according to claim 4, characterized in that: The reciprocating cylinder has a single driving action of extending and then retracting, and the rotation angle of the adjusting disk driven by the reciprocating cylinder is half of the included angle of the two adjusting through holes.

6. The pneumatic control proportional regulating valve according to claim 1, characterized in that: The diameter of the adjusting through hole on the end surface of the adjusting disk decreases clockwise or counterclockwise.

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