CN224174551U - Stop valve - Google Patents

Abstract

The utility model provides a stop valve, and belongs to the technical field of stop valves. The valve clack solves the problems that in the prior art, valve clacks are not stably installed and the flow guiding effect is poor. The valve comprises a valve body, a valve clack body, a sealing cover and a valve rod, wherein the outer part of the valve body is in a symmetrical elliptic shape, an inlet flange and an outlet flange are respectively formed on two sides of the valve body, a connecting flange is formed at the upper end of the valve body, a fluid director is formed in the valve body, a through installation flow hole is formed in the middle of the fluid director, an upper partition arm and a lower partition arm are respectively formed on the upper diagonal corner and the lower diagonal corner of the fluid director, an upper flow guide channel and a lower flow guide channel are respectively formed among the upper partition arm, the lower partition arm and the valve cavity, the sealing cover is fixedly connected with the connecting flange, the valve clack body is fixedly connected with the end part of the valve rod, the valve rod penetrates through the sealing cover, the valve clack body is installed in the installation flow hole, and a wear-resistant bushing is fixedly sleeved outside the valve clack body. The utility model has the advantages of stable structure and good flow guiding effect.

Description

Stop valve

Technical Field

The utility model belongs to the technical field of stop valves, and relates to a stop valve.

Background

The stop valve is a forced sealing valve widely applied to industrial pipeline systems, controls the on-off of fluid by the up-and-down movement of the valve clack, and has the characteristics of simple structure, reliable sealing, excellent regulation performance and the like.

The chinese patent with the patent publication number CN218644894U discloses a stop valve, which comprises an installation body with a flow channel, a valve rod installed on the installation body, a valve clack connected with the valve rod and located in the installation body, and an actuator connected with the valve rod, wherein the flow channel is provided with two ends, two ends of the flow channel are respectively communicated with a first butt joint pipe and a second butt joint pipe, the first butt joint pipe and the second butt joint pipe are both fixed on the installation body in a sealing way, a first butt joint structure is arranged on the first butt joint pipe, and a second butt joint structure is arranged on the second butt joint pipe.

In the stop valve that this patent provided, do not set up the structure that is used for placing the valve clack specially in the installation body, cause the unstable or not enough problem of leakproofness of valve clack structure easily, and the runner corner angle near the valve clack is great, has certain influence to efficiency.

Disclosure of utility model

The present utility model has been made keeping in mind the above problems occurring in the prior art, and an object of the present utility model is to provide a shut-off valve.

The stop valve comprises a valve body, a valve clack body, a sealing cover and a valve rod, wherein the outer part of the valve body is in a symmetrical ellipse shape, an inlet flange and an outlet flange are respectively formed at two sides of the valve body, a connecting flange is formed at the upper end of the valve body, a valve cavity is formed in the valve body and is communicated with the inlet flange, the outlet flange and the connecting flange, a diversion body is formed in the valve body, the middle part of the diversion body is in a rectangular shape, a through installation flow hole is formed in the middle part of the diversion body, an upper partition arm and a lower partition arm are respectively formed at upper diagonal corners and lower diagonal corners of the diversion body, the upper partition arm, the lower partition arm and the valve cavity are respectively fixed with the inner walls of the upper end and the lower end of the valve body, an upper diversion channel and a lower diversion channel are respectively formed between the upper partition arm and the valve cavity, the sealing cover is fixedly connected with the connecting flange, the valve body is fixedly connected with the end part of the valve rod and penetrates through the sealing cover, the valve clack body is installed in the installation flow hole, and a wear-resistant lining is fixedly sleeved outside the valve clack body.

In the stop valve, the sealing groove is formed in the sealing cover, sealing filler is installed in the sealing groove, a filler gland is fixedly arranged at the upper end of the sealing filler, and the sealing filler and the filler gland are sleeved outside the valve rod and connected with the valve rod.

In the stop valve, a conical sealing block is formed at the lower end of the sealing cover.

In the stop valve, the inclination angles of the upper partition arm and the lower partition arm are 55 degrees, and the end parts of the upper partition arm and the lower partition arm and the valve cavity are respectively formed into an upper diversion angle and a lower diversion angle.

In the stop valve, the lower end of the valve clack body is of a cambered surface concave structure.

In the stop valve, a threaded structure is formed at the upper end of the valve rod, and a hand wheel is mounted at the upper end of the valve rod.

Compared with the prior art, the stop valve has the advantages that 1, the rectangular body-shaped mounting flow holes of the flow guide body in the valve body provide accurate axial positioning for the valve clack body, radial offset is avoided during opening and closing, the wear-resistant lining is matched, abrasion of a sealing surface is reduced, maintenance frequency is reduced, and 2, the upper partition arm and the lower partition arm form symmetrical flow passages with the flow guide angle at the inclination angle of 55 degrees, so that the flow resistance coefficient is reduced, the flow coefficient is improved, the high-viscosity medium conveying resistance is reduced, and the energy consumption is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of an explosive structure of the present utility model;

Fig. 3 is a schematic cross-sectional view of a valve body.

The valve comprises a valve body, an 11, an inlet flange, a12, an outlet flange, a 13, a connecting flange, a 14, a current guiding body, a 141, a mounting flow hole, a 142, an upper partition arm, a 143, a lower partition arm, a 144, an upper flow guiding channel, a 145, a lower flow guiding channel, a 146, an upper flow guiding angle, a 147, a lower flow guiding angle, a 2, a valve clack body, a 21, a cambered surface indent structure, a 3, a sealing cover, a 31, a sealing groove, a 32, a conical sealing block, a 4, a valve rod, a 41, a threaded structure, a 5, a wear-resistant bushing, a 6, sealing filler, a 7, a packing gland, an 8 and a hand wheel.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 to 3, the present embodiment includes a valve body 1, a valve clack body 2, a sealing cover 3 and a valve rod 4, the outside of the valve body 1 is in a symmetrical ellipse shape, an inlet flange 11 and an outlet flange 12 are respectively formed at two sides of the valve body 1, a connecting flange 13 is formed at the upper end of the valve body 1, a valve cavity is formed inside the valve body 1 and is communicated with the inlet flange 11, the outlet flange 12 and the connecting flange 13, a fluid guiding body 14 is formed inside the valve body 1, the middle part of the fluid guiding body 14 is in a rectangular shape, a through installation flow hole 141 is formed in the middle part of the fluid guiding body 14, an upper partition arm 142 and a lower partition arm 143 are respectively formed at upper and lower diagonal corners of the fluid guiding body 14, the upper partition arm 142 and the lower partition arm 143 are respectively fixed with inner walls at the upper and lower ends of the valve body 1, an upper flow guiding channel 144 and a lower flow guiding channel 145 are respectively formed between the upper partition arm 142, the lower partition arm 143 and the valve cavity, and the upper flow guiding channel 144 are respectively communicated with the valve cavity at the ports of the inlet flange 11 and the outlet flange 12.

Specifically, as shown in fig. 3, the inclination angles of the upper partition arm 142 and the lower partition arm 143 are 55 °, the ends of the upper partition arm 142 and the lower partition arm 143 and the valve cavity near the inlet flange 11 and the outlet flange 12 are respectively formed into an upper flow guiding angle 146 and a lower flow guiding angle 147, and the upper flow guiding angle 146 and the lower flow guiding angle 147 are obtuse angles, so that fluid disturbance is avoided, and flow guiding efficiency is improved.

As shown in fig. 1 to 3, the sealing cover 3 is fixedly connected with the connecting flange 13, the valve clack body 2 is fixedly connected with the end part of the valve rod 4, the valve rod 4 penetrates through the sealing cover 3, the valve clack body 2 is installed in the installation flow hole 141, the wear-resistant bush 5 is fixedly sleeved outside the valve clack body 2, the wear-resistant bush 5 is installed in the valve clack body 2 and the installation flow hole 141, the sealing groove 31 is formed in the sealing cover 3, the sealing filler 6 is installed in the sealing groove 31, the packing gland 7 is fixedly arranged on the upper end of the sealing filler 6, the sealing filler 6 and the packing gland 7 are sleeved outside the valve rod 4 and are connected with the valve rod 4, the threaded structure 41 is formed at the upper end of the valve rod 4, and the hand wheel 8 is installed in the threaded structure 41 at the upper end of the valve rod 4.

Further, as shown in fig. 2, the lower end of the valve clack body 2 is provided with a concave cambered surface structure 21, the concave cambered surface structure 21 reduces the fluid turning angle, and the concave cambered surface structure 21 has no edge angle cambered surface to avoid particle blocking, thereby improving the anti-blocking effect.

Further, as shown in fig. 2, a conical sealing block 32 is formed at the lower end of the sealing cover 3, and the conical sealing block 32 further improves the tightness between the sealing cover 3 and the valve body 1.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although various terms are used more herein, the use of other terms is not precluded. These terms are only used to more conveniently describe and explain the nature of the utility model and should be construed in a manner consistent with their spirit and scope.

Claims (6)

1. A shut-off valve, comprising a valve body (1), a valve disc body (2), a sealing cover (3), and a valve stem (4), wherein the valve body (1) is externally symmetrically elliptical and an inlet flange (11) and an outlet flange (12) are formed on both sides of the valve body (1), a connecting flange (13) is formed at the upper end of the valve body (1), and a valve cavity is formed inside the valve body (1) and the valve cavity is connected to the inlet flange (11), the outlet flange (12), and the connecting flange (13), characterized in that: a guide fluid (14) is formed inside the valve body (1), the middle part of the guide fluid (14) is rectangular and a through installation flow hole (141) is formed in the middle part of the guide fluid (14), the guide fluid (14) is rectangular in shape, and a through installation flow hole (141) is formed in the middle part of the guide fluid (14), the guide fluid (14) is... 4) The upper and lower diagonal partition arms (142) and the lower partition arms (143) are respectively formed. The upper partition arms (142) and the lower partition arms (143) are respectively fixed to the inner walls of the upper and lower ends of the valve body (1). The upper partition arm (142), the lower partition arm (143) and the valve cavity are respectively formed to form an upper flow channel (144) and a lower flow channel (145). The sealing cover (3) is fixedly connected to the connecting flange (13). The valve disc body (2) is fixedly connected to the end of the valve stem (4) and the valve stem (4) passes through the sealing cover (3). The valve disc body (2) is installed in the installation flow hole (141). The valve disc body (2) is fitted with a wear-resistant bushing (5). 2. A shut-off valve according to claim 1, characterized in that: a sealing groove (31) is provided in the sealing cover (3), a sealing packing (6) is installed in the sealing groove (31), a packing gland (7) is fixedly installed on the upper end of the sealing packing (6), and the sealing packing (6) and the packing gland (7) are sleeved on the outside of the valve stem (4) and connected to the valve stem (4). 3. A shut-off valve according to claim 1, characterized in that: a conical sealing block (32) is formed at the lower end of the sealing cover (3). 4. A shut-off valve according to claim 1, characterized in that: the inclination angle of the upper partition arm (142) and the lower partition arm (143) is 55°, and the ends of the upper partition arm (142) and the lower partition arm (143) are respectively formed with the valve cavity as an upper guide angle (146) and a lower guide angle (147). 5. A shut-off valve according to claim 1, characterized in that: the lower end of the valve disc body (2) has an arc-shaped concave structure (21). 6. A shut-off valve according to claim 1, characterized in that: the upper end of the valve stem (4) is formed with a threaded structure (41) and a handwheel (8) is installed on the upper end of the valve stem (4).