阅读说明：本技术 一种套筒式控制阀 (Sleeve type control valve ) 是由 邱和春 李政宏 于 2020-05-26 设计创作，主要内容包括：本发明涉及一种套筒式控制阀,包括：主阀体：为直径不同的两级嵌入式筒状结构,包括一体成型的小直径内筒和大直径外筒；固定锥体：固定安装在主阀体内部的轴线处；侧阀体：包括一体成型的前开口部和后直筒部,前开口部通过法兰与外筒后端固接,后直筒部的直流道与主阀体环形流道连通；外套筒：包括前端流道部和后端封闭部,在前端流道部表面开设有多圈复数的流道孔,所述的前端流道部外套在固定锥体后部,后端封闭部内套在后直筒部,并沿轴线前后往复移动实现流道的开启与闭合；驱动装置：安装在侧阀体上方,用以驱动外套筒前后往复移动。与现有技术相比,本发明具有传动扭矩轻、流阻损失小、防止气蚀、可在线高效反冲洗等优点。(The invention relates to a sleeve-type control valve, comprising: a main valve body: the device is of a two-stage embedded cylindrical structure with different diameters and comprises a small-diameter inner cylinder and a large-diameter outer cylinder which are integrally formed; fixing a cone: the main valve body is fixedly arranged at the axis inside the main valve body; side valve body: the main valve body comprises a front opening part and a rear straight cylinder part which are integrally formed, wherein the front opening part is fixedly connected with the rear end of the outer cylinder through a flange, and a straight flow passage of the rear straight cylinder part is communicated with the annular flow passage of the main valve body; outer sleeve: the front end runner part is sleeved outside the rear part of the fixed cone, and the rear end sealing part is sleeved inside the rear straight cylinder part and reciprocates back and forth along the axis to realize the opening and closing of the runner; a driving device: and the outer sleeve is arranged above the side valve body and used for driving the outer sleeve to reciprocate back and forth. Compared with the prior art, the invention has the advantages of light transmission torque, small flow resistance loss, cavitation prevention, on-line high-efficiency back flushing and the like.)

1. A sleeve-type control valve, comprising:

main valve body (1): the device is of a two-stage embedded cylindrical structure with different diameters and comprises a small-diameter inner cylinder and a large-diameter outer cylinder which are integrally formed;

fixed cone (4): the main valve body is fixedly arranged at the axis inside the main valve body (1) to form a main valve body annular flow passage;

side valve body (2): the main valve body is of a stepped structure with a large front part and a small rear part, and comprises a front opening part and a rear straight cylinder part which are integrally formed, wherein the front opening part is fixedly connected with the rear end of the outer cylinder through a flange, and a straight flow passage of the rear straight cylinder part is communicated with the annular flow passage of the main valve body;

outer sleeve (3): the flow channel closing device comprises a front end flow channel part and a rear end closing part, wherein a plurality of circles of flow channel holes are formed in the surface of the front end flow channel part, the front end flow channel part is sleeved outside the rear part of a fixed cone (4), and the rear end closing part is sleeved in a rear straight cylinder part and moves back and forth along an axis to realize the opening and closing of the flow channel;

a driving device: is arranged above the side valve body (2) and is used for driving the outer sleeve (3) to reciprocate back and forth.

2. A sleeve based control valve according to claim 1, wherein said flow passage opening is a tapered opening (5), said tapered opening (5) having an outer diameter greater than an inner diameter.

3. A sleeve type control valve according to claim 1, wherein said fixed cone (4) is composed of a cross flow guiding rib plate and a cone with a straight cylinder edge which are connected with each other, said cross flow guiding rib plate is installed inside the inner cylinder with a small diameter, and the front end of said outer sleeve (3) is sleeved on the rear part of the cone with the straight cylinder edge.

4. A sleeve type control valve according to claim 1, characterized in that the driving means comprises an electric actuator (12), a Y-shaped double umbrella gear box (11) and two sets of driving mechanisms which are respectively in transmission connection with the Y-shaped double umbrella gear box (11) and are arranged in bilateral symmetry, and each set of driving mechanism is respectively connected with the outer sleeve (3) through a thrust lug (6).

5. A sleeve type control valve according to claim 4, characterized in that each set of driving mechanism comprises a universal joint (15), a transmission rod (14), an umbrella-shaped gear box (10) and a screw assembly (9) which are sequentially driven, wherein the front end of the screw assembly (9) is connected with the thrust lug (6) and is locked by a nut (13).

6. A sleeve type control valve according to claim 4, characterized in that rib frames are symmetrically arranged on the outer sides of the side valve bodies (2), and removable limit pins (17) are arranged on the rib frames to limit the stroke of the screw rod components.

7. A sleeve-type control valve according to claim 1, characterized in that the main valve body (1) has a plurality of access openings (18) formed in the outer circumference of the large diameter outer cylinder.

8. A sleeve-type control valve according to claim 1, characterized in that when the valve is in an open state, said outer sleeve (3) is in an open position, the front flow passage portion of the outer sleeve (3) is located at an annular flow position formed by the front opening portion of the side valve body (2) and the rear portion of the fixed cone (4), and the water flow enters the front opening portion of the side valve body (2) along an annular port (8) formed between the fixed cone (4) and the inner wall of the main valve body (1) and then enters the outer sleeve (3) and the rear straight cylinder portion through the flow passage hole of the outer sleeve (3).

9. A sleeve type control valve according to claim 1, characterized in that when the valve is in the closed state, the outer sleeve (3) is in the closed position, and the rear end of the outer sleeve (3) is closed at the annular flow position formed by the front opening of the side valve body (2) and the rear of the fixed cone (4), thereby blocking the flow passage.

10. A sleeve-type control valve according to claim 1, characterized in that, in the back-flushing state of the valve, the outer sleeve (3) is in the back-flushing position, the front flow passage of the outer sleeve (3) is located at the annular opening (8) formed between the fixed cone (4) and the inner wall of the main valve body (1), and the rear closing portion is in close contact with the rear portion of the fixed cone (4).

Technical Field

The invention relates to the field of flow and pressure regulating control valves, in particular to a sleeve type control valve.

Background

The flow and pressure regulating control valve is the first choice valve for realizing flow and pressure control, and is widely applied to large and medium-sized cities all over the country as a mature product. The spray hole type sleeve valve reduces pressure and eliminates energy by utilizing the collision of a plurality of water flow centers, so that the flow state of water in a downstream pipeline is more stable, the operation is safer, and the multi-spray hole type control valve on the current market generally has the following problems:

1. the conveyed raw water is easy to block when running at a small opening;

2. the moving parts are in the valve body, the structure is complex and the operation and maintenance are difficult;

3. poor stability and easy blockage.

Chinese patent CN 1405473A discloses a multi-orifice sleeve axial-flow control valve, wherein the inner cavity of the outer valve body is provided with a circular sleeve body with a plurality of orifices, one end of the circular sleeve body is fixedly arranged between one end face of the outer valve body and the flange plate, the other end of the circular sleeve body is fixedly provided with an end cover, the outer surface of the circular sleeve body is sleeved with a circular sleeve, the circular sleeve is provided with a driving arm, the driving arm is connected with a driving mechanism, the adjusting device controls the driving arm to move back and forth to drive the circular sleeve to move on the circular sleeve body, the structure has the defects that the circular sleeve body with the spray orifices is a fixed part, the spray orifices are easy to cause the blockage of the circular sleeve of the moving part once being blocked, in addition, the saddle-shaped driving arm drives the circular sleeve to move back and forth through swinging, the requirement on the machining precision of the driving arm and the adjusting device is high, and the circular sleeve is easy to rotate and clamp in the moving process due to large error.

Disclosure of Invention

The object of the present invention is to overcome the above-mentioned drawbacks of the prior art by providing a sleeve-type control valve.

The purpose of the invention can be realized by the following technical scheme:

a sleeve-type control valve comprising:

a main valve body: the device is of a two-stage embedded cylindrical structure with different diameters and comprises a small-diameter inner cylinder and a large-diameter outer cylinder which are integrally formed;

fixing a cone: the main valve body is fixedly arranged at the axis inside the main valve body to form a main valve body annular flow passage;

side valve body: the main valve body is of a stepped structure with a large front part and a small rear part, and comprises a front opening part and a rear straight cylinder part which are integrally formed, wherein the front opening part is fixedly connected with the rear end of the outer cylinder through a flange, and a straight flow passage of the rear straight cylinder part is communicated with the annular flow passage of the main valve body;

outer sleeve: the front end runner part is sleeved outside the rear part of the fixed cone, and the rear end sealing part is sleeved inside the rear straight cylinder part and reciprocates back and forth along the axis to realize the opening and closing of the runner;

a driving device: and the outer sleeve is arranged above the side valve body and used for driving the outer sleeve to reciprocate back and forth.

The flow passage hole is a tapered hole, and the outer diameter of the tapered hole is larger than the inner diameter of the tapered hole.

The fixed cone is composed of a cross diversion rib plate and a cone with a straight cylinder edge, which are connected with each other, the cross diversion rib plate is arranged in the small-diameter inner cylinder, and the front end of the outer sleeve is sleeved at the rear part of the cone with the straight cylinder edge.

The driving device comprises an electric actuator, a Y-shaped double-umbrella-shaped gear box and two sets of driving mechanisms, wherein the electric actuator, the Y-shaped double-umbrella-shaped gear box and the two sets of driving mechanisms are sequentially in transmission connection, the two sets of driving mechanisms are respectively in transmission connection with the Y-shaped double-umbrella-shaped gear box, the two sets of driving mechanisms are arranged in bilateral symmetry, and each set of driving mechanism is respectively.

Each set of driving mechanism is composed of a universal coupling, a transmission rod, an umbrella-shaped gear box and a screw rod assembly which are sequentially transmitted, and the front end of the screw rod assembly is connected with a thrust lug and locked through a nut.

The side valve body outside symmetry be equipped with the gusset frame to be equipped with removable spacer pin on the gusset frame, be used for limiting screw rod assembly's stroke.

A plurality of access holes are formed in the outer circumference of the large-diameter outer cylinder of the main valve body.

When the valve is in an opening state, the outer sleeve is positioned at an opening position, the front end flow passage part of the outer sleeve is positioned at an annular flow position formed by the front opening part of the side valve body and the rear part of the fixed cone, and water flow enters the front opening part of the side valve body along an annular opening formed between the fixed cone and the inner wall of the main valve body and then enters the outer sleeve and the rear straight cylinder part through the flow passage hole on the outer sleeve.

When the valve is in a closed state, the outer sleeve is located at a closed position, and the rear end closed part of the outer sleeve is located at an annular circulation position formed by the front opening part of the side valve body and the rear part of the fixed cone to block the flow passage.

When the valve is in a back flushing state, the outer sleeve is positioned at a back flushing position, the flow passage part at the front end of the outer sleeve is positioned at an annular opening formed between the fixed cone and the inner wall of the main valve body, and the sealing part at the rear end is attached and sealed with the rear part of the fixed cone.

Compared with the prior art, the invention has the following advantages:

firstly, the transmission torque is light: the Y-shaped double-umbrella-shaped gear box drives the screw assemblies positioned on two sides of the side valve body to directly drive the axial movement of the outer sleeve to control the flow rate of the jet hole body, and the screw assemblies are only influenced by the gravity of the light outer sleeve and are not influenced by the pressure of water flow, so that the transmission torque is extremely light, and in addition, the driving part is positioned outside the side valve body, and the maintenance is very simple.

Secondly, the flow resistance loss is small, and cavitation is prevented: the outer sleeve of the invention adopts the design of the conical hole, the flow resistance loss is small compared with the straight hole injection, the flow resistance can be increased by 30 percent, in addition, the orifice of the conical hole is similar to a venturi tube, the water flow is continuously accelerated until the jet orifice is jetted, the pressure is recovered to be generated outside the jet orifice, the bubble is broken and generated in the water, and the cavitation of the jet orifice is completely avoided.

Thirdly, the cleaning is convenient and fast, and the efficiency is high: when the jet holes need to be cleaned, the limiting pins on the left side and the right side of the side valve body are taken off, the motor rotates reversely, the screw pushes the outer sleeve to move backwards, when the jet holes cover the annular inlet area of water flow, backwashing can be realized under the action of high-pressure water flow, in addition, due to the design of the tapered holes, the water flow flows out from the small inlet and the large outlet during backwashing, so that the cleaning is very easy, the water consumption for backwashing is small, the efficiency is higher, and the maintenance port is further arranged on the main valve body, so that garbage which is not easy to wash on the outer sleeve can be cleaned under the condition that the valve is not disassembled in the overhaul period.

Drawings

Fig. 1 is a half-section top view of the present invention in normal operation.

Fig. 2 is a right external view of the present invention.

FIG. 3 is a half-sectional top view of the present invention during backwash.

The notation in the figure is:

1. the main valve body, 2, the side valve body, 3, the outer sleeve, 4, the fixed cone, 5, the taper hole, 6, the thrust ear, 7, the bolt, 8, the annular mouth, 9, the screw rod subassembly, 10, the umbelliform gear box, 11, the two umbelliform gear boxes of Y type, 12, electric actuator, 13, the nut, 14, transfer line, 15, universal joint, 16, support, 17, spacer pin, 18, the access hole.

Detailed Description

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