Self-expansion stop valve

Abstract

The utility model provides a self-expansion type stop valve which structurally comprises a valve body, a water inlet guide pipe and a water drainage guide pipe are fixedly arranged at the water inlet end and the water outlet end of the valve body respectively, and a pressure release valve is fixedly arranged on the left side of the water inlet guide pipe; the valve comprises a valve body and two connecting sleeves, the opposite sides of the two connecting sleeves are sleeved with clamping bases, the opposite sides of the two clamping bases are detachably connected with the left end and the right end of a limiting spring in a clamped mode respectively, and a water inlet guide pipe and a water drainage guide pipe serve as connection intermediaries of the valve body and an external pipeline. The influence of excursion of an external pipeline due to factors such as stress on the valve body is reduced, and the working excursion of the first snake neck pipe and the second snake neck pipe is limited by combining the structural design of a connecting sleeve, a clamping seat and a limiting spring.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the technical field of stop valve, concretely relates to a self-expanding stop valve. BACKGROUND

[0002] As a pipeline connection component, the stop valve needs to withstand the impact from the medium flow during opening and closing, and is easily affected by non-standard pipeline erection construction, which can easily cause the connection between the stop valve and the pipeline to loosen and cause leakage.

[0003] The existing patent (publication number: CN211525555U) discloses a double-sealing self-pressing double-sealing stop valve, relating to the technical field of stop valves, comprising a lower valve body, an upper valve body fixedly installed on the top of the lower valve body through bolts, an upper valve cavity and a lower valve cavity respectively arranged at the upper and lower ends of the inside of the lower valve body, a water outlet respectively formed at the outer ends of the upper valve cavity and the lower valve cavity, a stable structure fixedly installed on both sides of the outer surface of the lower valve body at the water outlet, the stable structure comprising a mounting frame, the mounting frame fixedly installed on the outer surface of the lower valve body, an expansion sealing ring glued in the inside of the mounting frame, and a hollow box fixedly installed on one side of the outer surface of the mounting frame. The utility model tightens the pipeline by expansion of the expansion sealing ring, further fixes the pipeline, avoids the pipeline from falling off due to loosening, improves the service life of the pipeline, avoids maintenance, reduces the cost of maintenance, and improves the practicality.

[0004] In the prior art, an expansion sealing ring and a corresponding adjusting mechanism are added at the pipeline connection of the inlet and outlet of the stop valve, the pipeline is tightly clamped by expansion of the expansion sealing ring, and loosening between the pipeline and the stop valve is avoided.

[0005] The inventor proposes a self-expanding stop valve, which completes the connection and buffering design of the valve body and the external pipeline by arranging a water inlet guide pipe and a water outlet guide pipe at the inlet and outlet of the valve body and configuring a first snake neck pipe and a second snake neck pipe, and adds a pressure relief valve, which avoids damage to the pipeline caused by excessive water pressure in the water inlet guide pipe through the self-expanding structure of the pressure relief valve. UTILITY MODEL CONTENTS

[0006] 1. Technical problem solved by the utility model:

[0007] The utility model provides a self-expanding stop valve, which solves the technical problem of deviation and misalignment in the connection between the existing stop valve assembly and the external pipeline.

[0008] 2. Technical scheme:

[0009] To achieve the above-mentioned purpose, the utility model provides a technical scheme: a self-expanding stop valve, comprising the following structure:

[0010] The valve body is provided with a water inlet pipe and a water outlet pipe at the left and right ends thereof respectively, and the water inlet pipe is provided with a pressure relief valve at the left side thereof.

[0011] Two connecting sleeves are provided, and the opposite sides of the two connecting sleeves are sleeved with clamping seats, and the opposite sides of the two clamping seats are detachably connected with the left and right ends of the limiting springs respectively.

[0012] Further, the bottom of the valve body is provided with a water inlet and a water outlet at the front and rear ends thereof respectively, the top of the valve body is provided with a valve cover, and the top of the valve cover is provided with a gland.

[0013] The middle part of the gland is threadedly connected with a valve rod, the top of the valve rod is provided with a hand wheel, the middle part of the valve rod is movably sleeved with the middle part of the valve cover, and the bottom of the valve rod is provided with a valve flap, and the bottom of the valve flap extends to the inner side of the valve port of the valve body.

[0014] Further, the left end of the pressure relief valve is provided with a first snake neck pipe, the right end of the first snake neck pipe extends to the right side of the valve body, the left end of the pressure relief valve is provided with a mounting seat, the middle part of the mounting seat is movably inserted with a guide rod, and the right end of the guide rod is provided with a plug, and the outer side of the plug abuts against the right end inner wall of the pressure relief valve.

[0015] The right side of the mounting seat is detachably connected with an expansion sleeve, the left and right ends of the expansion sleeve are detachably connected with the left and right ends of the reset spring respectively, the left and right ends of the expansion sleeve are fixedly connected with the left and right ends of the protective sleeve respectively, and the middle part of the protective sleeve is sleeved with the outer side of the reset spring.

[0016] Further, the left side of the water outlet pipe is provided with a second snake neck pipe, the top end of the second snake neck pipe extends to the right side of the valve body, and the top end of the second snake neck pipe is fixedly connected with the top end of the first snake neck pipe.

[0017] 3. Beneficial effects:

[0018] Compared with the prior art, the technical scheme has the following beneficial effects:

[0019] The utility model provides a kind of self-expanding type stop valve, water inlet pipe and drain pipe are used as the connection intermediary of valve body and external pipeline, by the door type compensation structure of the first snake neck pipe and the second snake neck pipe of being set, reduce the influence of external pipeline due to stress and other factors and appear deviation to valve body, avoid the connection sealing property of the connection of external pipeline and pipeline to be destroyed due to the equipment, in combination with the structural design of connecting sleeve, clamping seat and limiting spring, the working deviation of the first snake neck pipe and the second snake neck pipe is limited.

[0020] The parts not involved in the device are the same as or can be realized by the prior art. DRAWINGS

[0021] Figure 1 is the perspective view of the structure of the utility model;

[0022] Figure 2 is the half cutaway perspective view of the valve body structure of the utility model;

[0023] Figure 3 is the perspective view of the first snake neck pipe structure of the utility model;

[0024] Figure 4 is the explosion view of the connecting sleeve structure of the utility model;

[0025] Figure 5 is the half cutaway perspective view of the pressure relief valve structure of the utility model;

[0026] Figure 6 is the explosion view of the pressure relief valve structure of the utility model.

[0027] Reference signs:

[0028] Valve body-1, water inlet-11, drain-12, valve cover-13, gland-14;

[0029] Valve stem-2, hand wheel-21, valve flap-22;

[0030] Water inlet conduit-3;

[0031] Pressure relief valve-4;

[0032] Mounting seat-5, guide rod-51, plug-52;

[0033] Expansion sleeve-6, return spring-61, protective sleeve-62;

[0034] First snake neck pipe-7;

[0035] Drainage conduit-8, second snake neck pipe-81;

[0036] Connecting sleeve-9, clamping seat-91, limiting spring-92. DETAILED DESCRIPTION

[0037] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings, the drawings show several embodiments of the utility model, however, the utility model can be realized in many different forms, and is not limited to the embodiments described herein, on the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0038] It is to be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element; the terms "vertical", "horizontal", "left", "right", and similar terms as used herein are for purposes of description only and not intended to be limiting.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the use of the terms "and / or" includes a combination of one or more of the associated listed items.

[0040] Referring to the drawings Figures 1-6 The utility model provides a kind of self-expanding stop valve, comprising the following structures:

[0041] Valve body 1, the water inlet end and the water outlet end of valve body 1 are respectively fixed with water inlet pipe 3 and drainage pipe 8, and the left side of water inlet pipe 3 is fixed with pressure relief valve 4.

[0042] Two connecting sleeves 9, the opposite sides of two connecting sleeves 9 are respectively sleeved with clamping seat 91, and the opposite sides of two clamping seats 91 are respectively detachably connected with the left and right ends of limiting spring 92.

[0043] In the embodiment, the front and rear ends of the bottom of valve body 1 are respectively fixed with water inlet 11 and drain 12, the top of valve body 1 is fixed with valve cover 13, and the top of valve cover 13 is fixed with gland 14.

[0044] The middle part of gland 14 is threadedly connected with valve rod 2, the top of valve rod 2 is fixed with hand wheel 21, the middle part of valve rod 2 is movably sleeved with the middle part of valve cover 13, and the bottom of valve rod 2 is fixed with valve flap 22, and the bottom of valve flap 22 extends to the inside valve port of valve body 1.

[0045] Hand wheel 21 and valve rod 2 are rotated on gland 14, the working position of valve flap 22 at the valve port in valve body 1 is adjusted, and the water inlet 11 and drain 12 of the valve body 1 of the device are connected or interrupted.

[0046] In the embodiment, the left end of pressure relief valve 4 is fixed with first snake neck pipe 7, the right end of first snake neck pipe 7 extends to the right side of valve body 1, the inside left end of pressure relief valve 4 is fixed with mounting seat 5, the middle part of mounting seat 5 is movably inserted with guide rod 51, the right end of guide rod 51 is fixed with plug 52, and the outside of plug 52 abuts against the right end inner wall of pressure relief valve 4.

[0047] The right side of the mounting base 5 is detachably connected with an expansion sleeve 6, the left end and the right end of the expansion sleeve 6 are detachably connected with the left end and the right end of a reset spring 61 respectively, the left end and the right end of the expansion sleeve 6 are fixedly connected with the left end and the right end of a protective sleeve 62 respectively, and the middle part of the protective sleeve 62 is sleeved with the outer side of the reset spring 61.

[0048] When the valve body 1 is closed by the valve disc 22, the plug 52 is pushed by the water in the water inlet pipe 3, the expansion sleeve 6 and the reset spring 61 are contracted, the guide rod 51 slides on the mounting base 5, and the water in the water inlet pipe 3 is discharged through the first snake neck pipe 7, the second snake neck pipe 81 and the water outlet pipe 8 in sequence.

[0049] When the valve body 1 is opened by the valve disc 22, the expansion sleeve 6 and the reset spring 61 of the pressure relief valve 4 are expanded, and the plug 52 is closed to the pressure relief valve 4.

[0050] In the embodiment, the left side of the water outlet pipe 8 is fixedly provided with the second snake neck pipe 81, the top end of the second snake neck pipe 81 extends to the right side of the valve body 1, and the top end of the second snake neck pipe 81 is fixedly connected with the top end of the first snake neck pipe 7.

[0051] The water inlet pipe 3 and the water outlet pipe 8 are connected with the valve body 1 and the external pipeline as an intermediate connection, the door type compensation structure composed of the first snake neck pipe 7 and the second snake neck pipe 81 is arranged, the influence of the external pipeline deviation caused by stress and other factors on the valve body 1 is reduced, and the working deviation of the first snake neck pipe 7 and the second snake neck pipe 81 is limited by the structural design of the connecting sleeve 9, the clamping seat 91 and the limiting spring 92.

[0052] The above-described embodiments only express certain implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent scope; it should be pointed out that, for ordinary skilled persons in the art, on the premise of not departing from the utility model concept, a plurality of deformations and improvements can be made, which belong to the protection scope of the utility model; therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A self-expanding stop valve, characterized by: The utility model provides a valve body (1), the water inlet pipe (3) and the drain pipe (8) are fixedly arranged on the water inlet end and the water outlet end of the valve body (1) respectively, the left side of the water inlet pipe (3) is fixedly arranged with a pressure relief valve (4), two connecting sleeves (9) are arranged on the valve body (1), the opposite sides of the two connecting sleeves (9) are sleeved with clamping seats (91), the opposite sides of the two clamping seats (91) are detachably connected with the left and right ends of limiting springs (92) respectively, the left end of the pressure relief valve (4) is fixedly arranged with a first snake neck pipe (7), the right end of the first snake neck pipe (7) extends to the right side of the valve body (1), the left end of the pressure relief valve (4) is fixedly arranged with a mounting seat (5), the middle part of the mounting seat (5) is movably inserted with a guide rod (51), the right end of the guide rod (51) is fixedly arranged with a plug (52), the outer side of the plug (52) is in contact with the right end inner wall of the pressure relief valve (4), the right side of the mounting seat (5) is detachably connected with an expansion sleeve (6), the left and right ends of the expansion sleeve (6) are detachably connected with the left and right ends of a reset spring (61) respectively, the left and right ends of the expansion sleeve (6) are fixedly connected with the left and right ends of a protective sleeve (62) respectively, the middle part of the protective sleeve (62) is sleeved with the outer side of the reset spring (61), the left side of the drain pipe (8) is fixedly arranged with a second snake neck pipe (81), the top end of the second snake neck pipe (81) extends to the right side of the valve body (1), and the top end of the second snake neck pipe (81) is fixedly connected with the top end of the first snake neck pipe (7). The bottom front and rear ends of the valve body (1) are fixedly arranged with a water inlet (11) and a drain outlet (12) respectively, the top of the valve body (1) is fixedly arranged with a valve cover (13), and the top of the valve cover (13) is fixedly arranged with a gland (14), the middle part of the gland (14) is threadedly connected with a valve rod (2), the top of the valve rod (2) is fixedly arranged with a hand wheel (21), the middle part of the valve rod (2) is movably sleeved with the middle part of the valve cover (13), the bottom of the valve rod (2) is fixedly arranged with a valve flap (22), and the bottom of the valve flap (22) extends to the inner side valve port of the valve body (1). ​ ​ ​ ​ 2. A self-expanding stop valve according to claim 1, characterized in that: ​ ​

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