CN212080265U - Check valve - Google Patents

Abstract

The utility model relates to a check valve, which comprises a valve body and a valve cover, wherein a valve port is arranged in the valve body, a valve core used for controlling the opening and closing of the valve port is arranged at the bottom of the valve cover, a first telescopic component is arranged between the valve core and the valve cover, the first telescopic component comprises a first pipe body connected with the top of the valve core and a second pipe body fixedly connected with the bottom of the valve cover, the first pipe body and the second pipe body are arranged at intervals along the axial direction, the first pipe body and the second pipe body are spliced and matched and are both hollow, a first spring is arranged in the first pipe body and the first pipe body, one end of the first spring is fixedly connected with the bottom of the first pipe body, the other end of the first spring is fixedly connected with the bottom of the second pipe body, a second telescopic component used for limiting the movement of the valve core is arranged at the outer side of the first pipe body and the second pipe body, the second telescopic, to provide a check valve which is easy to install, stable in operation and high in efficiency.

Description

Check valve

Technical Field

The utility model relates to the technical field of valves, in particular to check valve.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can pivot, and operate on a similar principle to lift check valves.

In the prior art, the installation between check valve gap and the case is inconvenient, resulting in the reduction of work efficiency, and economic cost rises.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a check valve convenient to installation, job stabilization, efficient.

The technical scheme of the utility model is realized like this: a check valve comprises a valve body and a valve cover, wherein a valve port is arranged in the valve body, a valve core for controlling the opening and closing of the valve port is arranged at the bottom of the valve cover, a first telescopic component is arranged between the valve core and the valve cover, the first telescopic component comprises a first pipe body connected with the top of the valve core and a second pipe body fixedly connected with the bottom of the valve cover, the first pipe body and the second pipe body are arranged at intervals along the axial direction, the first pipe body and the second pipe body are spliced and matched and are both arranged in a hollow way, the first tube body and the first tube body are internally provided with a first spring, one end of the first spring is fixedly connected with the bottom of the first tube body, the other end of the first spring is fixedly connected with the bottom of the second tube body, and a second telescopic assembly used for limiting violent movement of the valve core is arranged on the outer sides of the first pipe body and the second pipe body, and the second telescopic assembly is fixedly connected with the first pipe body and the second pipe body respectively.

By adopting the technical scheme, the first telescopic assembly is arranged between the valve core and the valve cover, the control of the valve core is facilitated due to the arrangement of the first telescopic assembly, the valve cover and the valve core are installed at a later stage, when the valve cover is not assembled with the valve body, the first telescopic assembly is convenient to be connected with the valve core and the valve cover, the installation efficiency and convenience are improved, when fluid impacts upwards from the bottom of the valve core, the valve core can ascend to open the valve port, the fluid can pass through the valve core, when the valve core is stopped, the valve core can reset to close the valve port without impact, the working efficiency is improved, the first telescopic assembly comprises a first pipe body connected with the top of the valve core and a second pipe body fixedly connected with the bottom of the valve cover, the first pipe body and the second pipe body are arranged at intervals along the axial direction, so that a certain space is reserved between the first pipe body and the second pipe body for facilitating telescopic operation, the space is small, so that after the valve core is impacted, the first pipe body and the second pipe body can be rapidly matched, the stability of the valve core can be improved, the air tightness is better when the valve core is sealed without displacement when the valve core needs to be lowered, the first pipe body and the second pipe body are in splicing fit and are both arranged in a hollow mode, the second pipe body can be inserted into the first pipe body, the matching efficiency is improved, the first spring is arranged in the first pipe body and the first pipe body, the valve core can be conveniently stretched and retracted through the arrangement of the first spring, the use efficiency is improved, one end of the first spring is fixedly connected with the bottom of the first pipe body, the connection firmness and the work efficiency are improved, the other end of the first spring is fixedly connected with the bottom of the second pipe body, the connection firmness and the work efficiency are further improved, the stretching stability of the valve core is improved, and the valve core can be simultaneously reset, the valve core is characterized in that a second telescopic assembly used for limiting violent movement of the valve core is arranged on the outer sides of the first pipe body and the second pipe body, the second telescopic assembly is located on the outer side and convenient to install and produce, installation and production efficiency is improved, the second telescopic assembly is fixedly connected with the first pipe body and the second pipe body respectively, telescopic stability of the first pipe body and telescopic stability of the second pipe body are further improved due to the arrangement of the second telescopic assembly, violent shaking of the valve core can be further prevented, and air tightness of the valve core matched with the valve port after resetting is improved.

The utility model discloses further set up to: the second telescopic assembly comprises a first clamping ring located on the outer side of the first pipe body and a second clamping ring located on the outer side of the second pipe body, the second clamping ring is located at the bottom of the second pipe body, and a second spring is fixedly connected between the first clamping ring and the second clamping ring.

Through adopting above-mentioned technical scheme, first snap ring and second snap ring have improved the firmness and the production efficiency of connecting with first body, second body integrated into one piece respectively, because the second body inserts in first body, consequently first snap ring is not limited in the position in the first body outside, the setting of second spring is convenient for further improvement first body stability of upwards contracting, has improved the stability of case.

The utility model discloses further set up to: the second spring is circumference setting, the second spring includes 2 at least.

By adopting the technical scheme, the number of the second springs can be 3-5, so that the generated resistance is small, the valve core can be conveniently opened by fluid, and the contraction stability of the first pipe body can be improved.

The utility model discloses further set up to: and corrosion-resistant layers are respectively arranged on the outer sides of the valve core, the first telescopic assembly and the second telescopic assembly.

By adopting the technical scheme, the corrosion-resistant layer can be made of corrosion-resistant materials such as a polytetrafluoroethylene layer, and the service lives of the valve core, the first telescopic assembly and the second telescopic assembly are prolonged.

The utility model discloses further set up to: the diameter of the first pipe body is larger than that of the second pipe body.

Through adopting above-mentioned technical scheme, consequently be convenient for second body and first body cooperation of pegging graft, can produce certain clearance behind the outer wall of second body and the inner wall piece cooperation of first body, consequently avoided appearing the emergence of slightly squinting and leading to unable grafting cooperation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a general cross-sectional view of an embodiment of the present invention;

fig. 2 is a schematic structural view of the first extensible member and the second extensible member according to an embodiment of the present invention.

Reference numerals: 1. a valve body; 101. a valve port; 2. a valve cover; 201. a valve core; 3. a first telescoping assembly; 301. a first pipe body; 302. a second tube body; 303. a first spring; 4. a second telescoping assembly; 401. a first snap ring; 402. a second snap ring; 403. a second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 2, the utility model discloses a check valve, including valve body 1 and valve gap 2, be equipped with valve port 101 in the valve body 1, valve gap 2 bottom is equipped with the case 201 that is used for controlling valve port 101 to open and close, be equipped with first flexible subassembly 3 between case 201 and the valve gap 2, the setting of first flexible subassembly 3 is convenient for the control to case 201, because valve gap 2 and case 201 are the later stage installation, consequently when valve gap 2 does not assemble with valve body 1, first flexible subassembly 3 is convenient for with the erection joint of case 201 and valve gap 2, has improved the efficiency and the convenience of installation, and case 201 can rise when upwards strikeing from the bottom of case 201 and open valve port 101 when fluid matter, and fluid matter can pass through at this moment, when damming case 201 does not receive the impact and can reset and close valve port 101, has improved the efficiency of work, first flexible subassembly 3 includes the first body 301 of being connected with case 201 top and with valve gap 2 bottom fixed connection's valve gap 2 The second tube body 302, the first tube body 301 and the second tube body 302 are axially arranged at intervals, so that a certain space is left between the first tube body 301 and the second tube body 302 for facilitating expansion and contraction, and the space is small, so that after the valve core 201 is impacted, the first tube body 301 and the second tube body 302 can be rapidly matched, the stability of the valve core 201 can be improved, when the valve core 201 needs to be lowered, no displacement occurs, the air tightness is better when the valve core is closed, the first tube body 301 and the second tube body 302 are spliced and matched and are both arranged in a hollow manner, the second tube body 302 can be inserted into the first tube body 301, the matching efficiency is improved, the first spring 303 is arranged in the first tube body 301 and the first tube body 301, the first spring 303 is arranged for facilitating expansion and contraction of the valve core 201, the use efficiency is improved, one end of the first spring 303 is fixedly connected with the bottom of the first tube body 301, the connecting firmness and the working efficiency are improved, the other end of the connecting firmness and the working efficiency are fixedly connected with the bottom of the second pipe body 302, the connecting firmness and the working efficiency are further improved, the stretching stability of the valve element 201 is improved, meanwhile, the valve element can reset, the second stretching assemblies 4 used for limiting violent movement of the valve element 201 are arranged on the outer sides of the first pipe body 301 and the second pipe body 302, the second stretching assemblies 4 are located on the outer sides and are convenient to install and produce, the installation and production efficiency is improved, the second stretching assemblies 4 are fixedly connected with the first pipe body 301 and the second pipe body 302 respectively, the stretching stability of the first pipe body 301 and the stretching stability of the second pipe body 302 are further improved due to the arrangement of the second stretching assemblies 4, the valve element 201 can be further prevented from shaking, and the airtightness matched with the valve port 101 after the valve element 201 resets is improved.

The second telescopic assembly 4 comprises a first clamping ring 401 located on the outer side of the first pipe body 301 and a second clamping ring 402 located on the outer side of the second pipe body 302, the second clamping ring 402 is located at the bottom of the second pipe body 302, a second spring 403 is fixedly connected between the first clamping ring 401 and the second clamping ring 402, the first clamping ring 401 and the second clamping ring 402 are integrally formed with the first pipe body 301 and the second pipe body 302 respectively, connection firmness and production efficiency are improved, the second pipe body 302 is inserted into the first pipe body 301, and therefore the position of the first clamping ring 401 on the outer side of the first pipe body 301 is not limited, the second spring 403 is arranged, so that the upward contraction stability of the first pipe body 301 is further improved, and the stability of the valve core 201 is improved.

The second springs 403 are circumferentially arranged, the number of the second springs 403 is at least 2, and the number of the second springs 403 can be 3-5, so that resistance generated by the second springs is small, the valve element 201 can be conveniently opened by fluid, and meanwhile, the stability of contraction of the first pipe body 301 can be improved.

The valve core 201, the first telescopic assembly 3 and the second telescopic assembly 4 are respectively provided with a corrosion-resistant layer at the outer side, the corrosion-resistant layers can be made of corrosion-resistant materials such as polytetrafluoroethylene layers, and the service life of the valve core 201, the first telescopic assembly 3 and the second telescopic assembly 4 is prolonged.

The bore of first body 301 is greater than the bore of second body 302, consequently is convenient for second body 302 and the cooperation of pegging graft of first body 301, can produce certain clearance behind the outer wall of second body 302 and the inner wall piece cooperation of first body 301, consequently avoided appearing the emergence of slightly squinting and lead to unable grafting cooperation.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a check valve, includes valve body and valve gap, be equipped with the valve port in the valve body, the valve gap bottom is equipped with the case that is used for controlling the valve port and opens and close, its characterized in that: the valve comprises a valve body, a valve cover and a valve core, and is characterized in that a first telescopic assembly is arranged between the valve core and the valve cover, the first telescopic assembly comprises a first pipe body connected with the top of the valve core and a second pipe body fixedly connected with the bottom of the valve cover, the first pipe body and the second pipe body are axially arranged at intervals, the first pipe body and the second pipe body are in splicing fit and are both arranged in a hollow mode, a first spring is arranged in the first pipe body and the first pipe body, one end of the first spring is fixedly connected with the bottom of the first pipe body, the other end of the first spring is fixedly connected with the bottom of the second pipe body, second telescopic assemblies used for limiting violent movement of the valve core are arranged on the outer sides of the first pipe body and the second pipe body, and the second telescopic assemblies are respectively.

2. A check valve as claimed in claim 1, wherein: the second telescopic assembly comprises a first clamping ring located on the outer side of the first pipe body and a second clamping ring located on the outer side of the second pipe body, the second clamping ring is located at the bottom of the second pipe body, and a second spring is fixedly connected between the first clamping ring and the second clamping ring.

3. A check valve as claimed in claim 2, wherein: the second spring is circumference setting, the second spring includes 2 at least.

4. A check valve as claimed in claim 1, wherein: and corrosion-resistant layers are respectively arranged on the outer sides of the valve core, the first telescopic assembly and the second telescopic assembly.

5. A check valve as claimed in claim 1, wherein: the diameter of the first pipe body is larger than that of the second pipe body.

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