Positioning structure for waterfall type multi-stage sealing valve

Abstract

The utility model relates to the technical field of multi-stage sealing valves, and discloses a positioning structure for a waterfall type multi-stage sealing valve, which comprises a supporting seat, a valve rod is in threaded connection with the inside of the supporting seat, a multi-stage sealing valve main body is fixedly connected with the bottom of the valve rod, and a guide column is fixedly connected with the bottom of the multi-stage sealing valve main body. The surface of the valve rod is sleeved with a guide assembly, and the bottom of the supporting base is connected with a sealing assembly in a clamped mode. According to the positioning structure for the waterfall type multi-stage sealing valve, through the arrangement of the guide assembly and the guide column, the effect of quickly guiding and positioning the multi-stage sealing valve main body is achieved, the multi-stage sealing valve main body can quickly and accurately find the respective position and be firmly fixed during installation, just like a stable frame is built for the waterfall type sealing valve, and the sealing effect of the waterfall type multi-stage sealing valve is improved. And the problem that the sealing performance is reduced or fails due to position deviation of the sealing valve in the working process is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to multistage sealing valve technical field especially relates to a kind of positioning structure for waterfall type multistage sealing valve. BACKGROUND

[0002] Waterfall type multistage sealing valve is a kind of valve designed for high pressure or special working condition, adopts multiple sealing levels to provide stronger sealing, commonly used in petroleum, chemical industry, natural gas and other industries.This kind of valve can ensure that fluid system can work stably under high pressure, low temperature or corrosive fluid, prevent leakage, the positioning structure of waterfall type multistage sealing valve refers to the structure inside valve for ensuring that multiple sealing levels effectively cooperate, and valve can keep the sealing performance of each level during switching process, prevent any level of sealing failure by step-by-step sealing and accurate positioning structure, keep the cooperation precision of each sealing surface and sealing ring.

[0003] The existing positioning structure for waterfall type multistage sealing valve is not easy to quickly guide and position multistage sealing valve body in actual use, so that the sealing performance of sealing valve is easily reduced or invalid due to position deviation in working process.

[0004] Therefore, it is necessary to invent a kind of positioning structure for waterfall type multistage sealing valve to solve the above problems. INVENTION CONTENTS

[0005] (I) technical problem solved

[0006] The utility model aims at providing a kind of positioning structure for waterfall type multistage sealing valve, to solve the problem of not easy to quickly guide and position multistage sealing valve body in the above background technology, so that the sealing performance of sealing valve is easily reduced or invalid due to position deviation in working process.

[0007] (II) technical scheme

[0008] To achieve the above object, the utility model is realized by the following technical scheme: a kind of positioning structure for waterfall type multistage sealing valve, including support seat, the inside screw thread of support seat is connected with valve stem, the bottom of valve stem is fixedly connected with multistage sealing valve body, the bottom of multistage sealing valve body is fixedly connected with guide column, the surface of valve stem is sleeved with guide assembly, the bottom of support seat is clamped with sealing assembly, the guide assembly includes the limit ring of sleeveing on the surface of valve stem, the bottom of limit ring is fixedly connected with guide sleeve;The sealing assembly includes the sealing steel ring of clamping in the bottom of support seat, and sealing washer is clamped on the top surface and bottom surface of sealing steel ring.

[0009] As a further scheme of the utility model, the bottom of the supporting seat is screw-connected with a positioning base, and a plurality of positioning clamping grooves are arranged in the positioning base.

[0010] As a further scheme of the utility model, the bottom of the supporting seat and the top of the positioning base are both annularly arranged with a plurality of groups of threaded holes, and threaded bolts are screw-connected in the threaded holes.

[0011] As a further scheme of the utility model, the bottom of the positioning base is fixedly connected with a base, and an input pipe is through-connected at the bottom of the base.

[0012] As a further scheme of the utility model, an insertion groove matched with the guide column is arranged in the inner bottom wall of the base, and a discharge pipe is through-connected at one side of the positioning base.

[0013] As a further scheme of the utility model, the one end of the discharge pipe and the input pipe is fixedly connected with a mounting flange, and a clamping groove matched with the sealing steel ring is arranged at the top of the positioning base.

[0014] As a further scheme of the utility model, the top of the valve rod is fixedly connected with a rotating wheel, and a sealing ring is sleeved at the top of the supporting seat.

[0015] (Three) beneficial effects

[0016] The utility model provides a kind of positioning structure for waterfall type multistage sealing valve, with following beneficial effects:

[0017] 1. The waterfall type multi-stage sealing valve positioning structure, through the setting of the guide assembly and the guide column, when installing the multi-stage sealing valve body, the multi-stage sealing valve body is inserted into the positioning base, the multi-stage positioning clamping grooves are ingeniously distributed on the positioning base and accurately matched with the sealing units of the waterfall type multi-stage sealing valve, the guide column is inserted into the insertion groove in the base along the vertical shaft direction of the center of the positioning base, and finally, the guide sleeve is inserted into the top of the positioning base to guide the multi-stage sealing valve body, so that the multi-stage sealing valve body can be quickly and accurately positioned and fixed during installation, and the stable frame is built for the waterfall type sealing valve, and the problems of sealing performance decline or failure caused by position deviation of the sealing valve during work are avoided.

[0018] 2. The waterfall type multi-stage sealing valve positioning structure, through the setting of the sealing assembly, when installing, the sealing gasket is clamped into the clamping grooves on the top surface and the bottom of the sealing steel ring, and then the installed sealing steel ring is clamped into the clamping groove on the positioning base, when the multi-stage sealing valve body is completely inserted into the positioning base, the sealing steel ring is embedded into the clamping groove at the bottom of the support seat, and then the threaded bolt is rotated in the threaded hole on the support seat and the positioning base and fixedly installed, so that the sealing effect between the support seat and the positioning base is improved, the intrusion of external impurities and moisture is reduced, and the service life of the waterfall type multi-stage sealing valve positioning structure is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2 It is a split structure schematic view of the utility model;

[0021] Figure 3 It is a guide assembly and guide column structure schematic view of the utility model;

[0022] Figure 4 It is a sealing assembly structure schematic view of the utility model.

[0023] In the drawing: 1, support seat; 2, valve stem; 3, multi-stage sealing valve body; 4, guide column; 5, guide assembly; 501, limiting ring; 502, guide sleeve; 6, sealing assembly; 601, sealing steel ring; 602, sealing gasket; 7, positioning base; 8, threaded bolt; 9, base; 10, input pipe; 11, discharge pipe; 12, mounting flange; 13, runner; 14, sealing ring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described in connection with the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0025] Please refer to Figures 1 to 4 The utility model provides a kind of technical scheme: a positioning structure for waterfall type multistage sealing valve, including support seat 1, the inside of support seat 1 is connected with valve stem 2 by screw thread, the bottom of valve stem 2 is fixedly connected with multistage sealing valve main body 3, the bottom of multistage sealing valve main body 3 is fixedly connected with guide column 4, the surface of valve stem 2 is sleeved with guide assembly 5, reach the effect of quick guide positioning for multistage sealing valve main body 3 by the setting of guide assembly 5 and guide column 4, multistage sealing valve main body 3 can be quickly and accurately found respective position and firmly fixed when installing, like as for the stable frame of waterfall type sealing valve is built, effectively avoid the problem that sealing performance is reduced or fails due to position deviation of sealing valve in working process, the bottom of support seat 1 is clamped with sealing assembly 6, reach the effect of strengthening the sealing property between support seat 1 and positioning base 7 by the setting of sealing assembly 6, reduce the invasion of external impurities and moisture, improve the service life of positioning structure for waterfall type multistage sealing valve, guide assembly 5 includes the limit ring 501 of sleeveing on the surface of valve stem 2, the bottom of limit ring 501 is fixedly connected with guide sleeve 502;Sealing assembly 6 includes the sealing steel ring 601 of clamping in the bottom of support seat 1, and sealing washer 602 is clamped on the top surface and bottom surface of sealing steel ring 601.

[0026] The bottom of support seat 1 is connected with positioning base 7 by screw thread, the inside of positioning base 7 is provided with multistage positioning clamping groove, reach the effect of cooperating sealing with multistage sealing valve main body 3 by the setting of multistage positioning clamping groove.

[0027] The bottom of support seat 1 and the top of positioning base 7 are both annular array and are provided with several groups of threaded holes, the inside of threaded hole is connected with threaded bolt 8 by screw thread, reach the effect of connecting and installing support seat 1 and positioning base 7 by the setting of threaded bolt 8.

[0028] The bottom of positioning base 7 is fixedly connected with base 9, the bottom of base 9 is connected with input pipe 10, reach the effect of liquid into valve interior by the setting of input pipe 10.

[0029] The inner bottom wall of base 9 is provided with the insertion slot compatible with guide column 4, one side of positioning base 7 is connected with discharge pipe 11, reach the effect of convenient liquid discharge by the setting of discharge pipe 11.

[0030] The one end of the exhaust pipe 11 and the input pipe 10 is fixedly connected with a mounting flange 12, the top of the positioning base 7 is provided with a clamping groove matched with the sealing steel ring 601, through the setting of the clamping groove, the sealing steel ring 601 is conveniently clamped.

[0031] The top of the valve rod 2 is fixedly connected with a rotating wheel 13, the top of the supporting seat 1 is sleeved with a sealing ring 14, through the setting of the sealing ring 14, the sealing property of the top of the supporting seat 1 is increased.

[0032] In the utility model, the working steps of the device are as follows:

[0033] The first step is that when the multi-stage sealing valve body 3 is installed, the multi-stage sealing valve body 3 is inserted into the positioning base 7, and the multi-stage positioning clamping grooves are cleverly distributed on the positioning base 7 and accurately matched with the sealing units of the multi-stage sealing valve body 3;

[0034] The second step is that the guiding column 4 is used to move along the vertical shaft direction of the center of the positioning base 7 downwards, and finally, the guiding sleeve 502 is inserted into the top of the positioning base 7 to guide the multi-stage sealing valve body 3, and then the guiding column 4 is inserted into the insertion slot in the base 9;

[0035] The third step is that when the sealing gasket 602 is installed, the sealing gasket 602 is clamped into the clamping grooves on the top surface and the bottom of the sealing steel ring 601, and then the sealing steel ring 601 is clamped into the clamping groove on the positioning base 7, and when the multi-stage sealing valve body 3 is completely inserted into the positioning base 7, the sealing steel ring 601 is embedded into the clamping groove at the bottom of the supporting seat 1, and then the threaded bolt 8 is rotated in the threaded hole on the supporting seat 1 and the positioning base 7 and fixedly installed.

[0036] It should be noted that the equipment structure and the drawings of the utility model mainly describe the principle of the utility model, and the setting of the power mechanism, the power supply system and the control system of the device is not completely described in the technical principle of the design, and under the premise that the above-mentioned principle of the utility model is understood by the person skilled in the art, the specific power mechanism, power supply system and control system can be clearly known, and the control mode of the application file is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the person skilled in the art;

[0037] The standard parts used can be purchased from the market, and can be ordered according to the description and drawings, the specific connection mode of each part adopts the conventional bolt, rivet, welding and other conventional means in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the components known by the person skilled in the art, the structure and principle thereof are known by the person skilled in the art through technical manual or conventional experimental method.

[0038] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning structure for a cascade multi-stage sealing valve, comprising a support seat (1), characterized in that: The inside of the support seat (1) is threadedly connected with a valve rod (2), the bottom of the valve rod (2) is fixedly connected with a multi-stage sealing valve body (3), the bottom of the multi-stage sealing valve body (3) is fixedly connected with a guide column (4), the surface of the valve rod (2) is sleeved with a guide assembly (5), the bottom of the support seat (1) is clamped with a sealing assembly (6), The guide assembly (5) comprises a limiting ring (501) sleeved on the surface of the valve rod (2), and the bottom of the limiting ring (501) is fixedly connected with a guide sleeve (502); The sealing assembly (6) comprises a sealing steel ring (601) clamped on the bottom of the support seat (1), and the top surface and the bottom surface of the sealing steel ring (601) are clamped with sealing washers (602).

2. A positioning structure for a multi-stage seal valve according to claim 1, characterized in that: The bottom of the support seat (1) is threadedly connected with a positioning base (7), and the inside of the positioning base (7) is provided with multi-stage positioning clamping grooves.

3. The positioning structure for a multi-stage seal valve according to claim 1, wherein: The bottom of the support seat (1) and the top of the positioning base (7) are both annularly arranged with a plurality of groups of threaded holes, and the inside of the threaded holes is threadedly connected with threaded bolts (8).

4. A positioning structure for a multi-stage seal valve according to claim 3, characterized in that: The bottom of the positioning base (7) is fixedly connected with a base (9), and the bottom of the base (9) is throughly connected with an input pipe (10).

5. A positioning structure for a multi-stage seal valve according to claim 4, characterized in that: The inner bottom wall of the base (9) is provided with a slot matched with the guide column (4), and one side of the positioning base (7) is throughly connected with a discharge pipe (11).

6. A positioning structure for a multi-stage seal valve according to claim 5, characterized in that: One end of the discharge pipe (11) and the input pipe (10) is fixedly connected with a mounting flange (12), and the top of the positioning base (7) is provided with a clamping groove matched with the sealing steel ring (601).

7. The positioning structure for a multi-stage seal valve according to claim 1, wherein: The top of the valve rod (2) is fixedly connected with a runner (13), and the top of the support seat (1) is sleeved with a sealing ring (14).

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