CN218845214U

CN218845214U - Check valve with limiting function

Info

Publication number: CN218845214U
Application number: CN202221689424.XU
Authority: CN
Inventors: 陈世伟; 陈彪龙; 王燕丽; 黄世梁
Original assignee: Fujian Haiyang Valve Technology Co ltd
Current assignee: Fujian Haiyang Valve Technology Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2023-04-11
Anticipated expiration: 2032-06-30

Abstract

The utility model relates to a check valve with limit function, including the valve body, set up in the lower valve cap of valve body upside, along radially seting up in water inlet channel and exhalant canal in the valve body, set up in just be located in the valve body water inlet channel with play disk seat between the exhalant canal, can slide from top to bottom set up in the disk seat upside be used for with the valve plate that disk seat cooperation control fluid opened and close, set up in be used for the drive on the valve plate first valve rod, cover are located be used for on the valve rod the valve plate keeps the compression spring of downstream trend, compression spring one end support in the valve plate up end other end support in the valve body inner wall, be located in the valve body first valve rod upside is provided with and is used for the restriction the stop device of the valve plate position of sliding upwards.

Description

Check valve with limiting function

Technical Field

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

Background

The stop valve, also called as a stop valve, is one of the most widely used valves, and is popular because of small friction force between sealing surfaces in the opening and closing process, durability, small opening height, easy manufacture and convenient maintenance, and is not only suitable for medium and low pressure, but also suitable for high pressure. The closing principle of the stop valve is that the sealing surface of the valve clack is tightly attached to the sealing surface of the valve seat by means of the pressure of the valve rod, and the medium is prevented from flowing. The stop valve only allows the medium to flow in one direction, and the installation has directionality. At present, the material of common stop valve in the market mainly adopts stainless steel or brass, because the processing capacity is limited, the structure is simple relatively, make its leakproofness receive the influence, the potential safety hazard has, the stop valve does not have the non return function simultaneously, when the stop valve is in the open mode, the fluid in the oral cavity probably can take place the backward flow, it causes the pollution to get into the pipeline upper reaches easily, so through adopting stop valve and check valve, through the flow of medium in these two kinds of valve control pipelines, but the installation can be more loaded down with trivial details like this, the assembly number of times is many, increase construction cost.

SUMMERY OF THE UTILITY MODEL

Therefore, to the above problem, the utility model provides a check valve with limit function.

In order to realize the technical problem, the utility model discloses the solution who takes is a check valve with limit function, including the valve body, set up in the lower valve cap of valve body upside, along radially seting up in water inlet channel and exhalant canal in the valve body, set up in the valve body and be located water inlet channel with play disk seat between the exhalant canal, can slide from top to bottom set up in the disk seat upside be used for with the valve plate that disk seat cooperation control fluid opened and close, set up in first valve rod, cover on the valve plate are located be used for the drive on the valve rod the compression spring of valve plate holding downstream trend, compression spring one end support in the valve plate up end other end support in the valve body inner wall, be located in the valve body first valve rod upside is provided with and is used for the restriction the stop device of the valve plate position of sliding upwards.

The further improvement is that: the stop device includes: lie in the valve body down the valve cap lower extreme can slide from top to bottom and be provided with and be used for supporting the top of the valve plate up end restriction the valve plate slide from top to bottom the position the stop collar, rotatable set up in on the valve body and the lower extreme with the stop collar is used for driving through threaded connection the second valve rod that the stop collar slided from top to bottom, wear out second valve rod upper end down the valve cap.

The further improvement is that: the stop collar is the cylinder type stop collar, the internal thread has been seted up to the stop collar, the second valve rod lower extreme seted up with the external screw thread that the stop collar matches, first valve rod upper end penetrates in the stop collar.

The further improvement is that: the lower end of the second valve rod is provided with a containing groove, and the upper end of the first valve rod penetrates into the containing groove when the first valve rod slides upwards to a preset position.

The further improvement is that: and a telescopic connecting device for connecting an external pipe fitting is arranged at one end of the valve body, which is provided with the water outlet channel.

The further improvement is that: the connecting device comprises a telescopic pipe which can slide along the radial direction of the valve body and one end of which penetrates into the water outlet channel, a connecting cap which is detachably arranged on the valve body and used for limiting the telescopic pipe to penetrate into the water outlet channel, one end of which is separated from the valve body, a limiting gasket which is arranged between the connecting cap and the valve body, and a loose joint cap which is arranged at the other end of the telescopic pipe and used for connecting an external pipe fitting.

The further improvement is that: the lower valve cap is provided with the upper valve cap in a rotatable manner, the upper valve cap is arranged between the second valve stems and is provided with a transmission pin for transmission, and the upper valve cap and the lower valve cap are provided with a locking device for locking the upper valve cap.

The further improvement is that: locking means including set up in locking groove on the lower valve cap, can slide from top to bottom set up in first magnetic part in the locking groove, set up in support respectively in the locking groove and both ends in terminal surface reaches under the first magnetic part elastic component of terminal surface, set up in under the locking groove go up the valve cap downside be used for with first magnetic part cooperation supplies first magnetic part upper end penetrates the restriction go up valve cap pivoted spacing groove, can dismantle set up in be used for driving on the last valve cap go up valve cap pivoted key, set up in be used for the drive on the key first magnetic part slides downwards and breaks away from the second magnetic part of spacing groove.

The further improvement is that: and a first sealing element is arranged between the telescopic pipe and the inner wall of the valve body.

The further improvement is that: a second seal is disposed between the second valve stem and the upper bonnet.

By adopting the technical scheme, the beneficial effects of the utility model are that: in the utility model, the valve plate is arranged in the valve body in a lifting way, and is provided with the compression spring, so that the valve plate can play the check effect in the utility model; meanwhile, in the utility model, the first valve rod is rotated to drive the limiting cylinder to descend, and the valve plate can drive the first valve rod to ascend under the action of fluid and prop against the lower end surface of the limiting cylinder when ascending, so that the opening size of the valve plate can be controlled by a person to control the flow; simultaneously, the user of service can control a spacing section of thick bamboo and descend to the extreme lower position, and the terminal surface supports mutually under valve plate up end and the spacing section of thick bamboo promptly, and the terminal surface cooperatees with the disk seat under the valve plate, at this moment, can realize by the function that the fluid passes through, consequently, the utility model provides a valve can realize non return, control flow, three kinds of functions that end, and is simple with outside pipe fitting installation, and the assembly number of times is few, has reduced construction cost.

Drawings

Fig. 1 is a schematic view of the valve body structure in the embodiment of the present invention.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

Examples

Referring to fig. 1, a check valve with a limiting function includes a valve body 1, a lower valve cap 2 disposed on an upper side of the valve body 1, a water inlet channel 3 and a water outlet channel 4 radially disposed in the valve body 1, a valve seat 5 disposed in the valve body 1 and located between the water inlet channel 3 and the water outlet channel 4, a valve plate 6 slidably disposed on an upper side of the valve seat 5 and cooperating with the valve seat 5 to control opening and closing of a fluid, a first valve rod 7 disposed on the valve plate 6, a compression spring 8 sleeved on the valve rod and used for driving the valve plate 6 to keep a downward movement trend, an elastic sealing gasket 9 disposed at a lower end of the valve plate 6, one end of the compression spring 8 abutting against an upper end surface of the valve plate 6 and the other end abutting against an inner wall of the valve body 1, the valve body 1 is internally provided with a limiting device which is positioned on the upper side of the first valve rod 7 and used for limiting the upward sliding position of the valve plate 6, in the embodiment, when the limiting device does not limit the valve plate 6, the compression spring 8 enables the valve plate 6 to keep a downward movement trend, when fluid circulates from the water inlet channel 3 to the water outlet channel 4, the fluid is upwards propped against the valve plate 6 under the pressure action of the fluid, so that the fluid can flow into the water outlet channel 4 from the water inlet channel 3, when the fluid is disconnected, the valve plate 6 moves downwards under the action of the compression spring 8 to seal the valve seat 5, at the moment, the fluid in the water outlet channel 4 is intercepted by the valve plate 6 and can not flow back into the water inlet channel 3, at the moment, the valve of the embodiment can play a non-return effect, and prevent the upstream of a pipeline from causing pollution.

In this embodiment, the position limiting device includes: the valve body 1 is internally provided with a limiting sleeve 10 which is used for abutting against the upper end face of the valve plate 6 to limit the vertical sliding position of the valve plate 6, and a second valve rod 11 which is rotatably arranged on the valve body 1 and has a lower end connected with the limiting sleeve 10 through threads and used for driving the limiting sleeve 10 to vertically slide, wherein the upper end of the second valve rod 11 penetrates out of the lower valve cap 2, in the embodiment, the second valve rod 11 is connected with the limiting sleeve 10 through threads, meanwhile, the limiting sleeve 10 can only vertically slide and is arranged at the lower end of the lower valve cap 2 (the side wall of the lower valve cap 2 can be provided with a limiting groove 21, the side wall of the limiting sleeve 10 is provided with a limiting boss which is matched with the limiting groove 21 to limit the rotation of the limiting sleeve 10), a user controls the second valve rod 11 to rotate, at the moment, the second valve rod 11 drives the limiting sleeve 10 to downwardly slide, at the moment, when the valve plate 6 rises, the upper end face of the valve plate 6 abuts against the lower end face of the limiting sleeve 10, when the limiting sleeve 10 moves down to the lowest end face of the valve plate 6, the valve plate 6 is matched with a water inlet passage 3, and the valve plate 6 is limited by the water inlet passage 4.

The stop collar 10 is a cylindrical stop collar 10, an internal thread is formed in the stop collar 10, an external thread matched with the stop collar 10 is formed at the lower end of the second valve rod 11, the upper end of the first valve rod 7 penetrates into the stop collar 10, meanwhile, an accommodating groove 12 is formed at the lower end of the second valve rod 11, and the upper end of the first valve rod 7 penetrates into the accommodating groove 12 when the first valve rod 7 slides upwards to a preset position.

In order to facilitate connection of an external pipe, a telescopic connection device for connecting the external pipe is arranged at one end of the valve body 1, which is provided with a water outlet channel 4, and the connection device comprises a telescopic pipe 13 which can slide along the radial direction of the valve body 1 and one end of which penetrates into the water outlet channel 4, a connection cap 14 which is detachably arranged on the valve body 1 and is used for limiting one end of the telescopic pipe 13 penetrating into the water outlet channel 4 to be separated from the valve body 1, a limit gasket 15 which is arranged between the connection cap 14 and the valve body 1, and a movable connection cap 16 which is arranged at the other end of the telescopic pipe 13 and is used for connecting the external pipe.

In order to prevent the valve rod from being rotated by the misoperation of the outside personnel, the lower bonnet 2 is rotatably provided with an upper bonnet 17, the upper bonnet 17 is arranged between the second valve rod 11 and is provided with a transmission pin 18 for transmission, the upper bonnet 17 is arranged between the lower bonnet 2 and is provided with a locking device for locking the upper bonnet 17, the locking device comprises a locking groove arranged on the lower bonnet 2, a first magnetic member 19 which can slide up and down and is arranged in the locking groove, an elastic member 20 (a reset spring) which is arranged in the locking groove and has two ends respectively abutting against the lower end face of the first magnetic member 19 and the lower end face of the locking groove, and a second magnetic member 23 which is arranged on the key 22 and is used for driving the first magnetic member 19 to slide down and separate from the limiting groove 21, wherein the lower side of the upper bonnet 17 is used for matching with the first magnetic member 19 to supply the upper end of the first magnetic member 19 to penetrate into the limiting groove 21 for rotating the upper bonnet 17, the upper bonnet 17 can be detachably arranged on the upper bonnet 17 and is used for driving the key 22 to slide down and separate from the limiting groove 21, a washer 26 is arranged between the second valve stem 11 and the upper bonnet 17, when the upper bonnet 17 rotates to a predetermined position and the locking groove matches with the limiting groove 21, the upper end of the first magnetic member 19 penetrates into the limiting groove 21, at this time, the upper bonnet 17 is limited to rotate, at this time, if the upper bonnet 17 needs to be controlled to rotate, the key 22 is installed on the upper bonnet 17, at this time, the first magnetic member 19 is matched with the second magnetic member 23 (at this time, the first magnetic member 19 is repelled by the second magnetic member 23), at this time, the first magnetic member 19 overcomes the elastic force of the elastic member 20 to slide downwards, the upper end is separated from the limiting groove 21, the upper bonnet 17 can be rotated.

In order to improve the sealing performance in this embodiment, a first sealing member 24 (o-ring) is disposed between the extension tube 13 and the inner wall of the valve body 1, and a second sealing member 25 (o-ring) is disposed between the second stem 11 and the upper bonnet 17.

The working principle is as follows: in this embodiment, a user can control the number of turns of the second valve rod 11, so as to control the position where the second valve rod 11 drives the stop collar 10 to slide downwards, and the valve plate 6 rises under the action of the fluid and can be abutted against the lower end surface of the stop collar 10, i.e., the opening size of the valve plate 6 can be controlled, and further the flow rate can be controlled; when the limiting sleeve 10 moves downwards to the lowest end, the limiting sleeve 10 resists the valve plate 6 to limit the valve plate 6 to ascend, and at the moment, the valve plate 6 is matched with the valve seat 5 to limit fluid from flowing into the water outlet channel 4 from the water inlet channel 3 to achieve a stopping function.

The above description is only an embodiment utilizing the technical content of the present disclosure, and any modification and variation made by those skilled in the art can be covered by the claims of the present disclosure, and not limited to the embodiments disclosed.

Claims

1. The utility model provides a check valve with limit function, includes the valve body, set up in the lower valve cap of valve body upside, along radially seting up in water inlet channel and exhalant canal in the valve body, set up in the valve body and be located water inlet channel with play disk seat between the exhalant canal, can slide from top to bottom set up in the disk seat upside be used for with the disk seat cooperation control fluid valve plate open and close, set up in first valve rod on the valve plate, cover are located be used for driving on the valve rod the valve plate keeps the compression spring of downward motion trend, compression spring one end support in the valve plate up end other end support in the valve body inner wall, its characterized in that: and a limiting device used for limiting the upward sliding position of the valve plate is arranged on the upper side of the first valve rod in the valve body.

2. The check valve with a limit function according to claim 1, wherein: the stop device includes: lie in the valve body down the valve cap lower extreme can slide from top to bottom and be provided with and be used for supporting the top of the valve plate up end restriction the valve plate slide from top to bottom the position the stop collar, rotatable set up in on the valve body and the lower extreme with the stop collar is used for driving through threaded connection the second valve rod that the stop collar slided from top to bottom, wear out second valve rod upper end down the valve cap.

3. The check valve with a limit function according to claim 2, wherein: the stop collar is the cylinder type stop collar, the internal thread has been seted up to the stop collar, the second valve rod lower extreme seted up with the external screw thread that the stop collar matches, first valve rod upper end penetrates in the stop collar.

4. A check valve having a limit function according to claim 3, wherein: the lower end of the second valve rod is provided with a containing groove, and the upper end of the first valve rod penetrates into the containing groove when the first valve rod slides upwards to a preset position.

5. The check valve with a limit function according to claim 1, wherein: and a telescopic connecting device for connecting an external pipe fitting is arranged at one end of the valve body, which is provided with a water outlet channel.

6. The check valve with a limit function according to claim 5, wherein: the connecting device comprises a telescopic pipe which can slide along the radial direction of the valve body and one end of which penetrates into the water outlet channel, a connecting cap which is detachably arranged on the valve body and used for limiting the telescopic pipe to penetrate into the water outlet channel, one end of which is separated from the valve body, a limiting gasket which is arranged between the connecting cap and the valve body, and a loose joint cap which is arranged at the other end of the telescopic pipe and used for connecting an external pipe fitting.

7. The check valve with a position limiting function according to claim 4, wherein: the lower valve cap is provided with the upper valve cap in a rotatable manner, the upper valve cap is arranged between the second valve stems and is provided with a transmission pin for transmission, and the upper valve cap and the lower valve cap are provided with a locking device for locking the upper valve cap.

8. The check valve with a limit function according to claim 7, wherein: locking means including set up in locking groove on the lower valve cap, can slide from top to bottom set up in first magnetic part in the locking groove, set up in support respectively in the locking groove and both ends in terminal surface reaches under the first magnetic part elastic component of terminal surface, set up in under the locking groove go up the valve cap downside be used for with first magnetic part cooperation supplies first magnetic part upper end penetrates the restriction go up valve cap pivoted spacing groove, can dismantle set up in be used for driving on the last valve cap go up valve cap pivoted key, set up in be used for the drive on the key first magnetic part slides downwards and breaks away from the second magnetic part of spacing groove.

9. The check valve with a position limiting function according to claim 6, wherein: and a first sealing element is arranged between the telescopic pipe and the inner wall of the valve body.

10. The check valve with a position limiting function according to claim 8, wherein: a second seal is disposed between the second valve stem and the upper bonnet.