CN211975897U

CN211975897U - Balanced type cut-off, regulation, filtration and blow-off valve

Info

Publication number: CN211975897U
Application number: CN202020275377.9U
Authority: CN
Inventors: 宋玉法; 李云华; 栾海荣; 许新乐
Original assignee: Rongcheng Rongli Valve Co ltd
Current assignee: Rongcheng Rongli Valve Co ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-11-20
Anticipated expiration: 2030-03-02

Abstract

The utility model discloses a balanced type is by, is adjusted, is filtered, blowoff valve, the utility model discloses constitute by handle, valve-stem nut, valve gap, valve rod, filtration bush, piston, valve body, disk seat, lower valve gap, the disk seat is equipped with at the middle part in the valve body, and the disk seat upper end is equipped with the filtration bush, filters the bush upper end and is equipped with the valve gap, filters the upper end of the inside disk seat of bush and is equipped with the piston, and the upper end of piston is equipped with balanced chamber, and terminal surface and disk seat up end are equipped with sealed vice under the piston, and the valve. The utility model has the advantages that: the balance type stop, regulation, filtration and blow-down valve is innovatively designed, is a multifunctional valve integrating four functions, can reduce the types and the number of valves installed on a process pipeline, and saves the process cost of the pipeline.

Description

Balanced type cut-off, regulation, filtration and blow-off valve

Technical Field

The utility model provides a balanced type intercepting, adjusting, filtering and blow-down valve which is suitable for the petroleum, chemical and other industries.

Technical Field

At present, each valve of domestic stop valves, regulating valves, filter valves and blow-down valves only has a single function or two functions, so that the types and the number of the valves used for installing process pipelines are large, and the process cost of the pipelines is high. The most disadvantage of the existing valves is that the sealing and flow regulating parts of the valves are valve seat and valve clack sealing pairs. When the valve is opened and the flow is regulated, the pipeline medium flows out between the valve seat and the valve clack, the medium directly erodes the sealing pair of the valve, and the sealing pair is easily eroded by the medium to damage, so that the sealing performance of the valve fails. Especially in the case of high differential pressure regulated flow, the valve life is shorter. No filter device is arranged in the valve, and impurities in the pipeline cause damage to equipment at the downstream end of the valve, so that the pipeline equipment cannot normally run.

Disclosure of Invention

The utility model discloses an overcome current valve structure technical shortcoming, the innovative design has a balanced type to end, adjust, filter, blowoff valve, is the multi-functional valve that four functions are gathered integrative, can reduce the kind and the quantity of technology pipeline installation valve, saves pipeline technology cost. The defects that a medium is directly flushed and brushed on a sealing pair when the flow of the valve is regulated, a sealing surface is extremely easy to damage, the sealing performance of the valve is poor, and the service life of the valve is short are overcome. The valve can filter the impurity in the pipeline, reduces impurity and to valve downstream end equipment influence. And the lower valve cover valve is opened to carry out a sewage disposal process flow.

The utility model provides a technical scheme that technical problem adopted is: the utility model discloses constitute by handle, valve rod nut, valve gap, valve rod, filtration bush, piston, valve body, disk seat, lower valve gap, the middle part is equipped with the disk seat in the valve body, and the disk seat upper end is equipped with filters the bush, filters the bush upper end and is equipped with the valve gap, and the piston is equipped with to the upper end of filtering the inside disk seat of bush, and the upper end of piston is equipped with balanced chamber, and terminal surface is equipped with sealed vice with the disk seat up end under the piston, and the valve gap is equipped with down to.

The lower cylindrical surface of the filtering lining is provided with 2 rows or more than 2 rows of filtering holes, the distance from the central line of the filtering holes to the lower end of the filtering lining is more than 1.5 times of the diameter of the filtering holes, and the lower end surface of the piston and the upper end surface of the valve seat are provided with a sealing pair below the lower end surface of the filtering lining.

The valve cover, the filtering bush, the piston and the valve rod form a balance cavity, a balance hole is formed in the piston, and the balance hole is communicated with the balance cavity.

The valve body is provided with a water inlet and a water outlet, and the middle part in the valve body is provided with a valve cavity.

The utility model has the advantages that: the balance type stop, regulation, filtration and blow-down valve is innovatively designed, is a multifunctional valve integrating four functions, can reduce the types and the number of valves installed on a process pipeline, and saves the process cost of the pipeline. The defects that a medium directly washes a sealing pair, a sealing surface is extremely easy to damage, the sealing performance of the valve is poor and the service life of the valve is short when the flow of the valve is regulated are overcome. The valve can filter the impurity in the pipeline, reduces impurity and to valve downstream end equipment influence. And the sewage discharge process flow can be carried out by opening the lower valve cover valve.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a front sectional view of an embodiment of the present invention.

In fig. 1, a handle 1, a valve rod nut 2, a valve cover 3, a valve rod 4, a filtering bush 5, a piston 6, a valve body 7, a valve seat 8, a lower valve cover 9, a water inlet A, a water outlet B, a balance cavity C, a seal pair D, a balance hole E, a filter hole F and a valve cavity G.

Detailed Description

In fig. 1, a balanced type is by, adjust, filter, blowoff valve, by handle (1), valve-stem nut (2), valve gap (3), valve rod (4), filter bush (5), piston (6), valve body (7), disk seat (8), lower valve gap (9) are constituteed, disk seat (8) are equipped with to the middle part in valve body (7), filter bush (5) are equipped with to disk seat (8) upper end, valve gap (3) are equipped with to filter bush (5) upper end, piston (6) are equipped with to the upper end of the inside disk seat (8) of filter bush (5), the upper end of piston (6) is equipped with balanced chamber (C), piston (6) lower terminal surface and disk seat (8) up end are equipped with sealed vice (D), valve gap (9) are equipped with to valve body (7) lower. 2 rows or more than 2 rows of filter holes (F) are arranged on the cylindrical surface of the lower part of the filter lining (5), the distance from the central line of the filter holes (F) to the lower end of the filter lining (5) is more than 1.5 times of the diameter of the filter holes (F), and a sealing pair (D) arranged on the lower end surface of the piston (6) and the upper end surface of the valve seat (8) is arranged below the lower end surface of the filter lining (5). The valve cover (3), the filtering bush (5), the piston (6) and the valve rod (4) form a balance cavity (C), a balance hole (E) is formed in the piston (6), and the balance hole (E) is communicated with the balance cavity (C). The valve body (7) is provided with a water inlet (A) and a water outlet (B), and the middle part in the valve body (7) is provided with a valve cavity (G).

A balanced pressure balance mechanism of a stop, regulation, filtration and blow-down valve is a balanced cavity (C) consisting of a valve cover (3), a filtration lining (5), a piston (6) and a valve rod (4), wherein a balanced hole (E) is arranged inside the piston (6), and the balanced hole (E) is communicated with the balanced cavity (C).

The medium enters the valve body from the water inlet (A) of the valve and reaches the balance cavity (C) through the balance hole (E) on the piston (6), the pressure of the medium on the upper end and the lower end of the piston (6) is basically equal, the valve can be opened and closed only by overcoming the thrust and the frictional resistance of the medium to the valve rod, and the valve is very flexible to open and close.

A sealing mechanism of a balanced type stop, regulation, filtration and blow-down valve is composed of a piston (6) and a valve seat (8), wherein after the valve is completely closed, a sealing surface at the lower end of the piston (6) is tightly pressed with a sealing surface at the upper end of the valve seat (8), a valve sealing pair (D) is formed, the circulation of a medium is cut off, and the valve is in a closed state.

A flow regulating mechanism of a balanced type cut-off, regulation, filtration and blow-off valve consists of a filtration lining (5), a piston (6) and a valve seat (8). When the valve is opened, the valve handle (1) is rotated, the valve rod nut (2) drives the valve rod (4) and the piston (6) to move upwards, a gap is generated between the piston (6) and a sealing pair (D) of the valve seat (8), the valve starts to be opened, when the lower end surface of the piston (6) exceeds a filtering hole (F) at the lowest end of the filtering lining (5), the flow of the valve can be adjusted, at the moment, the flow sectional area of the gap between the valve seat (8) and the sealing pair (D) of the piston (6) is larger than the flow sectional area of a medium passing through the filtering hole (F), the quantity of the medium of the output valve is realized by the quantity of the filtering holes (F) exposed on the filtering lining (5) at the lower end of the piston (6), the flow adjustment of the valve is controlled by the quantity of the medium passing through the filtering holes (F), the medium only erodes the filtering holes (F), and the medium does not erode, the sealing pair (D) is protected. The opening degree of the piston (6) is adjusted, and the flow rate of the medium is adjusted by the amount of the filter holes (F), so that the valve flow rate adjusting function is achieved.

A filter mechanism of a balanced type cut-off, regulation, filtration and blow-off valve consists of a filter lining (5) and a piston (6). When the valve is opened, the piston (6) moves upwards, the medium is output out of the valve through the filtering hole (F), impurities in the medium are blocked in the valve by the filtering hole (F), and equipment at the downstream end of the valve is not influenced by the impurities. The lower valve cover (9) is disassembled to clean impurities in the valve, so that the filtering effect is achieved.

A balance type emptying mechanism of a stop, regulation, filtration and blow-down valve consists of a valve body (7) and a lower valve cover (9), wherein the valve with the lower valve cover (9) removed can be used for carrying out blow-down process flow operation.

The utility model discloses a theory of operation is: the handle (1) is rotated anticlockwise, the valve rod nut (2) rotates anticlockwise to drive the valve rod (4) and the piston (6) to move upwards, a gap is generated between the piston (6) and a sealing pair (D) of the valve seat (8), the valve starts to be opened, when the lower end face of the piston (6) exceeds a filtering hole (F) at the lowest end of the filtering bush (5), the flow of the valve can be adjusted, at the moment, the flow sectional area of the gap between the valve seat (8) and the sealing pair (D) of the piston (6) is larger than the flow sectional area of a medium passing through the filtering hole (F), the quantity of media of the output valve is realized by the quantity of the filtering holes (F) exposed on the filtering bush (5) at the lower end of the piston (6), the flow of the valve is adjusted by the quantity of the media passing through the filtering holes (F), the media only scour the filtering holes (F), and the media do not scour, the sealing pair (D) is protected. The opening degree of the piston (6) is adjusted, and the flow is adjusted by the medium passing through the filter holes (F), so that the flow adjusting function of the valve is achieved. The medium is exposed out of the filter hole (F) on the filter lining (5) through a gap formed by the water inlet (A), the piston (6) and the sealing pair (D) of the valve seat (8) and is output from the water outlet (F).

Impurities in the medium are blocked in the valve by the filter holes (F). The lower valve cover (9) is disassembled to clean impurities in the valve, and the valve can be operated in a sewage disposal process flow.

Handle (1) is rotated clockwise, and valve-stem nut (2) drive, valve rod (4) and piston (6) downstream, and the sealed face of piston (6) lower extreme and disk seat (8) upper end compresses tightly, has formed valve seal pair (D), has cut the circulation of medium, and the valve is in the closed condition.

Claims

1. The utility model provides a balanced type is by, is adjusted, is filtered, blowoff valve, comprises handle (1), valve-stem nut (2), valve gap (3), valve rod (4), filters bush (5), piston (6), valve body (7), disk seat (8), lower valve gap (9), characterized by: valve seat (8) are equipped with to middle part in valve body (7), and valve gap (3) are equipped with to valve seat (8) upper end being equipped with filtering bush (5), and piston (6) are equipped with to the upper end of filtering bush (5) inside valve seat (8), and the upper end of piston (6) is equipped with balanced chamber (C), and terminal surface and valve seat (8) up end are equipped with sealed vice (D) under piston (6), and valve gap (9) are equipped with down to valve body (7) lower extreme.

2. The balanced shut-off, adjustment, filtration and blowdown valve as claimed in claim 1, wherein: 2 rows or more than 2 rows of filter holes (F) are arranged on the cylindrical surface of the lower part of the filter lining (5), the distance from the central line of the filter holes (F) to the lower end of the filter lining (5) is more than 1.5 times of the diameter of the filter holes (F), and a sealing pair (D) arranged on the lower end surface of the piston (6) and the upper end surface of the valve seat (8) is arranged below the lower end surface of the filter lining (5).

3. The balanced shut-off, adjustment, filtration and blowdown valve as claimed in claim 1, wherein: the valve cover (3), the filtering bush (5), the piston (6) and the valve rod (4) form a balance cavity (C), a balance hole (E) is formed in the piston (6), and the balance hole (E) is communicated with the balance cavity (C).

4. The balanced shut-off, adjustment, filtration and blowdown valve as claimed in claim 1, wherein: the valve body (7) is provided with a water inlet (A) and a water outlet (B), and the middle part in the valve body (7) is provided with a valve cavity (G).