阅读说明：本技术 一种高精度变风量文丘里阀 (High-precision variable air volume venturi valve ) 是由 陈铁坚 谭忠际 于 2021-09-02 设计创作，主要内容包括：本发明公开一种高精度变风量文丘里阀,包括：阀体外壳、设置在所述阀体外壳内的阀芯、风量调节机构、与所述风量调节机构连接的移动杆,所述阀芯套在移动杆上；所述风量调节机构包括：固定在所述阀体外壳上的安装板、安装于所述安装板上的风阀执行器、连接花齿、与所述连接花齿连接的连杆、可旋转地安装于所述安装板上的传动杆,所述传动杆的一端穿过阀体外壳与所述移动杆连接,另一端与所述连杆固定连接；所述风阀执行器的输出齿圈套在所述连接花齿上,所述风阀执行器用于驱动所述连接花齿、连杆旋转。本发明通过风阀执行器控制旋转过程,风阀执行器所旋转的角度与阀芯移动的位置相对应,从而控制阀芯的打开程度,实现风量的精准调节。(The invention discloses a high-precision variable air volume Venturi valve, which comprises: the air quantity adjusting device comprises a valve body shell, a valve core arranged in the valve body shell, an air quantity adjusting mechanism and a movable rod connected with the air quantity adjusting mechanism, wherein the valve core is sleeved on the movable rod; the air volume adjusting mechanism comprises: the air valve actuator is arranged on the mounting plate, the connecting spline teeth, the connecting rod connected with the connecting spline teeth and the transmission rod rotatably arranged on the mounting plate, one end of the transmission rod penetrates through the valve body shell to be connected with the movable rod, and the other end of the transmission rod is fixedly connected with the connecting rod; and an output gear ring of the air valve actuator is sleeved on the connecting spline, and the air valve actuator is used for driving the connecting spline and the connecting rod to rotate. The air valve actuator controls the rotation process, and the rotation angle of the air valve actuator corresponds to the moving position of the valve core, so that the opening degree of the valve core is controlled, and the accurate adjustment of the air volume is realized.)

1. The utility model provides a high accuracy variable air volume venturi valve which characterized in that includes: the air quantity adjusting device comprises a valve body shell, a valve core arranged in the valve body shell, an air quantity adjusting mechanism and a moving rod connected with the air quantity adjusting mechanism, wherein the valve core is sleeved on the moving rod; the air volume adjusting mechanism comprises: the air valve actuator is arranged on the mounting plate, the connecting spline teeth, the connecting rod connected with the connecting spline teeth and the transmission rod rotatably arranged on the mounting plate, one end of the transmission rod penetrates through the valve body shell to be connected with the movable rod, and the other end of the transmission rod is fixedly connected with the connecting rod; and an output gear ring of the air valve actuator is sleeved on the connecting spline, and the air valve actuator is used for driving the connecting spline and the connecting rod to rotate.

2. A high precision variable air volume venturi valve according to claim 1, wherein an inner gear is provided on the output gear ring of said actuator, and an outer gear matched with said inner gear is provided on said connecting spline.

3. A high accuracy variable air volume venturi valve according to claim 1, wherein said air volume adjusting mechanism further comprises: the transmission rod is sleeved on the rotating shaft.

4. A high accuracy variable air volume venturi valve according to claim 1, wherein said transfer lever and said travel lever are connected by an S-shaped connection.

5. A high accuracy variable air volume venturi valve in accordance with claim 1, wherein said spool comprises: the valve core ball body, the valve core cone body covered on the valve core ball body and the bile duct spring arranged in the valve core ball body are all sleeved on the movable rod.

6. A high accuracy variable air volume venturi valve according to claim 5, wherein a spring end cap is arranged on the upper end of the bile duct spring, a ball end cap is arranged on the valve core ball, and a cone end cap is arranged on the valve core cone.

7. A high accuracy variable air volume venturi valve according to claim 1, wherein said valve body housing further comprises two guide brackets, said two guide brackets are both fitted over said movable rod.

8. A high accuracy variable air volume venturi valve according to claim 7, wherein said guide frame is provided with a through hole, said through hole has an inner diameter larger than an outer diameter of said movable rod, and said valve core is disposed between said two guide frames.

9. A high accuracy variable air volume venturi valve according to claim 1, wherein said connecting spline is connected to said connecting rod by a fixing screw, said connecting rod is L-shaped or S-shaped.

10. A high accuracy variable air volume venturi valve according to claim 1, wherein said air valve actuator is of the type LMQ 24A-SR.

Technical Field

The invention relates to the field of venturi valves, in particular to a high-precision variable air volume venturi valve.

Background

The Venturi valve is widely applied to air supply and exhaust pipelines and used for adjusting air quantity. The venturi valve controls the air quantity mainly through the matching of a venturi-shaped shell, an internal valve core and a valve rod, can control and expand air flow to the highest level due to the combination of a mechanical pressure irrelevant regulator, and is widely applied to places such as biological product production plants, toxic and harmful laboratories, chemical laboratories and biological safety laboratories which require negative pressure control.

However, the venturi valves of the prior art have the following problems: 1. the adjusting process cannot be accurately controlled, so that the adjusting precision is low; 2. the air volume adjusting structure is complex, inconvenient to adjust and occupies a large space.

Accordingly, the prior art is deficient and needs improvement.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides a high-precision variable air volume Venturi valve, and solves the problem that the Venturi valve cannot accurately control the air volume adjusting process in the prior art, so that the adjusting precision is low; the problem of venturi valve air regulation structure complicated, be not convenient for adjust is solved.

The technical scheme of the invention is as follows: a high precision variable air volume venturi valve comprising: the air quantity adjusting device comprises a valve body shell, a valve core arranged in the valve body shell, an air quantity adjusting mechanism and a moving rod connected with the air quantity adjusting mechanism, wherein the valve core is sleeved on the moving rod; the air volume adjusting mechanism comprises: the air valve actuator is arranged on the mounting plate, the connecting spline teeth, the connecting rod connected with the connecting spline teeth and the transmission rod rotatably arranged on the mounting plate, one end of the transmission rod penetrates through the valve body shell to be connected with the movable rod, and the other end of the transmission rod is fixedly connected with the connecting rod; and an output gear ring of the air valve actuator is sleeved on the connecting spline, and the air valve actuator is used for driving the connecting spline and the connecting rod to rotate. When the air volume needs to be adjusted, the air valve actuator is controlled to be started through the background control center, the driving mechanism in the air valve actuator drives the output gear ring to rotate, the output gear ring drives the connecting spline and the connecting rod to rotate, and the valve core is driven to move up and down under the action of the transmission rod and the moving rod, so that the change of the diameter and the sectional area of the valve is realized, and the ventilation volume is quickly changed; according to the invention, the air valve actuator is matched and connected with the spline, the connecting rod, the transmission rod and the moving rod, so that the rotary motion is converted into linear motion, and the automatic adjustment of the air quantity of the Venturi valve is realized; on the other hand, the rotation angle of the air valve actuator is controlled between 0-60 degrees, and the valve core can be controlled to move from the closed position to the maximum position by rotating 0-60 degrees, so that the high adjustment precision is ensured.

Furthermore, an inner gear is arranged on an output gear ring of the actuator, and an outer gear matched with the inner gear is arranged on the connecting spline.

Further, the air volume adjusting mechanism further comprises: install bearing bracket on the mounting panel, rotatable install in pivot on the bearing bracket, the drive rod cover all overlaps in the pivot.

Further, the transmission rod is connected with the movable rod through an S-shaped connecting piece. Through the S-shaped connecting piece, the transmission rod can drive the movable rod to do linear motion.

Further, the valve cartridge includes: the valve core ball body, the valve core cone body covered on the valve core ball body and the bile duct spring arranged in the valve core ball body are all sleeved on the movable rod.

Furthermore, a spring end cover is arranged at the upper end of the bile duct spring, a ball end cover is arranged on the valve core ball, and a cone end cover is arranged on the valve core cone.

Furthermore, two guide frames are further arranged in the valve body shell, and the two guide frames are sleeved on the moving rod.

Furthermore, a through hole is formed in each guide frame, the inner diameter of each through hole is larger than the outer diameter of each moving rod, and the valve core is arranged between the two guide frames. The movable rod can freely move in the through hole on the guide frame, and the two guide frames are used for preventing the movable rod from shaking in the up-and-down moving process, so that the movable rod and the valve core are improved in up-and-down moving stability while the movable rod is guaranteed to do linear motion.

Further, the connecting spline is connected with the connecting rod through a fixing screw, and the connecting rod is L-shaped or S-shaped, preferably L-shaped. The connecting spline is fixedly connected with the connecting rod and coaxially rotates under the action of the air valve actuator.

Further, the model of the air valve actuator is LMQ 24A-SR.

By adopting the scheme, the invention provides the high-precision variable air volume Venturi valve which has the following beneficial effects:

1. the rotary motion is converted into linear motion by matching the air valve actuator with mechanical transmission structures such as connecting spline teeth, a connecting rod, a transmission rod, a moving rod and the like, so that the air quantity of the Venturi valve is quickly and automatically adjusted, and the adjusting process is simplified;

2. the rotation process is controlled through the air valve actuator, and the rotation angle of the air valve actuator corresponds to the moving position of the valve core, so that the opening degree of the valve core is controlled, and the accurate adjustment of the air volume is realized;

3. simple structure, compact size and small occupied production space.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of an air volume adjusting mechanism according to the present invention;

FIG. 3 is a schematic structural diagram of a valve body housing and a valve core of the present invention;

FIG. 4 is a schematic structural view of an air valve actuator and connecting spline teeth of the present invention;

FIG. 5 is a schematic structural view of the valve cartridge of the present invention;

fig. 6 is a schematic structural view of the connecting spline and the connecting rod of the present invention.

Wherein: the air volume adjusting valve comprises a valve body shell 1, a valve core 2, a valve core sphere 20, a valve core cone 21, a bile duct spring 22, a spring end cover 23, a sphere end cover 24, a cone end cover 25, an air volume adjusting mechanism 3, an installation plate 30, an air valve actuator 31, an output gear ring 310, an internal gear 311, connecting spline teeth 32, an external gear 320, a connecting rod 33, a transmission rod 34, a bearing support 35, a rotating shaft 36, an annular shaft sleeve 37, a rotating shaft seat 38, a moving rod 4, an S-shaped connecting piece 5, a guide frame 6 and a through hole 60.

Detailed Description

The invention is described in detail below with reference to the figures and the specific embodiments.

Referring to fig. 1 to 6, the present invention provides a high precision variable air volume venturi valve, comprising: the air quantity regulating valve comprises a valve body shell 1, a valve core 2 arranged in the valve body shell 1, an air quantity regulating mechanism 3 and a movable rod 4 connected with the air quantity regulating mechanism 3, wherein the valve core 2 is sleeved on the movable rod 4; the air volume adjusting mechanism 3 is used for driving the movable rod 4 and the valve core 2 to move up and down, so that the valve diameter cross section area of the high-precision variable air volume Venturi valve is changed, and the ventilation volume is changed.

Specifically, in the present embodiment, the air volume adjusting mechanism 3 includes: the air valve actuator 31 is arranged on the mounting plate 30, the connecting spline 32, the connecting rod 33 connected with the connecting spline 32 and the transmission rod 34 rotatably arranged on the mounting plate 30, one end of the transmission rod 34 penetrates through the valve body shell 1 to be connected with the movable rod 4, and the other end of the transmission rod 34 is fixedly connected with the connecting rod 33; the output gear ring 310 of the air valve actuator 31 is sleeved on the connecting spline 32, and the air valve actuator 31 is used for driving the connecting spline 32 and the connecting rod 33 to rotate; an inner gear 311 is arranged on the output gear ring 310 of the actuator, an outer gear 320 matched with the inner gear 311 is arranged on the connecting spline 32, and the model of the air valve actuator 31 is LMQ 24A-SR; the connection spline 32 is connected to the connecting rod 33 by a fixing screw, the connecting rod 33 is L-shaped, the connection spline 32 is cylindrical, and the outer gear 320 is disposed on the side of the cylinder. The adjusting process of the air quantity adjusting mechanism 3 is as follows: when the air volume needs to be adjusted, the air valve actuator 31 is controlled to be started through the background control center, the driving mechanism in the air valve actuator 31 drives the output gear ring 310 to rotate, the output gear ring 310 drives the connecting spline 32 and the connecting rod 33 to rotate, and the valve core 2 is driven to move up and down under the action of the transmission rod 34 and the movable rod 4, so that the change of the diameter and the sectional area of the valve is realized, and the ventilation volume is quickly changed; the connecting rod 33 is L-shaped, so that the arc length formed by the rotation of the transmission rod 34 can be increased, namely the length (diameter) between the transmission rod 34 and the rotation central point is increased, the mutual interference among the connecting rod 33, the transmission rod 34 and the movable rod 4 in the transmission process is avoided, and the adjustment process of the air volume adjusting mechanism 3 is smoother and more stable; according to the invention, the air valve actuator 31 is matched and connected with the spline 32, the connecting rod 33, the transmission rod 34 and the movable rod 4, so that rotary motion is converted into linear motion, and the automatic adjustment of the air quantity of the Venturi valve is realized; on the other hand, in the invention, the rotation angle of the air valve actuator 31 is controlled between 0-60 degrees, and the valve core 2 can be controlled to move from the closed position to the maximum position by rotating 0-60 degrees, thereby ensuring high adjustment precision.

Specifically, in the present embodiment, the air volume adjusting mechanism 3 further includes: the bearing bracket 35 is mounted on the mounting plate 30, the rotating shaft 36 is rotatably mounted on the bearing bracket 35, and the transmission rod 34 is sleeved on the rotating shaft 36; the mounting plate 30 is provided with a rotating shaft seat 38, the side of the driving rod 34 close to the bearing support 35 is provided with an annular shaft sleeve 37, the annular shaft sleeve 37 is rotatably mounted on the rotating shaft seat 38, the annular shaft sleeve 37 is sleeved on the driving rod 34, and one end of the rotating shaft 36 penetrates through the annular shaft sleeve 37 and the driving rod 34 to fix the annular shaft sleeve 37 and the driving rod 34, so that the driving rod 34 moves more stably.

Specifically, in the present embodiment, the transmission rod 34 is connected to the moving rod 4 through an S-shaped connecting member 5, two ends of the S-shaped connecting member 5 are respectively connected to the transmission rod 34 and the moving rod 4, and the transmission rod 34 can drive the moving rod 4 to move linearly through the S-shaped connecting member 5.

Specifically, in the present embodiment, the spool 2 includes: the valve core ball 20, the valve core cone 21 covered on the valve core ball 20, and the bile duct spring 22 arranged in the valve core ball 20, wherein the valve core ball 20, the bile duct spring 22, and the valve core cone 21 are all sleeved on the movable rod 4; a spring end cover 23 is arranged at the upper end of the bile duct spring 22, a ball end cover 24 is arranged on the valve core ball 20, and a cone end cover 25 is arranged on the valve core cone 21; the sphere end cover 24 is used for fixing the valve core sphere 20, the cone end cover 25 is used for fixing the valve core cone 21, the upper end of the bile duct spring 22 is connected with the spring end cover 23, the upper end of the bile duct spring is contacted with the cone end cover 25, the valve core sphere 20 is connected with the valve core cone 21, and the bile duct spring 22 can play a role in buffering in the process that the valve core 2 moves up and down.

Specifically, in this embodiment, two guide frames 6 are further disposed in the valve body housing 1, and the two guide frames 6 are in contact with the inner wall of the valve body housing 1 and are mounted on the inner wall of the valve body housing 1 through fixing screws; the two guide frames 6 are sleeved on the moving rod 4, the guide frames 6 are provided with through holes 60, and the inner diameter of each through hole 60 is larger than the outer diameter of the moving rod 4, so that the moving rod 4 can automatically move in the guide frames 6; the valve core 2 is arranged between the two guide frames 6, the guide frames 6 are used for preventing the moving rod 4 from shaking in the up-and-down moving process, and the moving rod 4 and the valve core 2 are improved in up-and-down moving stability while the moving rod 4 and the valve core 2 are guaranteed to do linear motion.

In summary, the present invention provides a high-precision variable air volume venturi valve, which has the following beneficial effects:

1. the rotary motion is converted into linear motion by matching the air valve actuator with mechanical transmission structures such as connecting spline teeth, a connecting rod, a transmission rod, a moving rod and the like, so that the air quantity of the Venturi valve is quickly and automatically adjusted, and the adjusting process is simplified;

2. the rotation process is controlled through the air valve actuator, and the rotation angle of the air valve actuator corresponds to the moving position of the valve core, so that the opening degree of the valve core is controlled, and the accurate adjustment of the air volume is realized;

3. simple structure, compact size and small occupied production space.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.