CN211624257U

CN211624257U - Regulating valve

Info

Publication number: CN211624257U
Application number: CN201922250472.3U
Authority: CN
Inventors: 于田; 段金周
Original assignee: Zhengzhou Zhongte Valve Co ltd
Current assignee: Zhengzhou Zhongte Valve Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-10-02
Anticipated expiration: 2029-12-16

Abstract

The regulating valve aims to solve the problem that the valve body is damaged due to large impact force of a medium in the regulating valve; the throttling valve comprises a valve body, a valve core is arranged in the valve body, a valve cover is arranged above the valve body, a valve rod penetrates through the valve cover, a driving device is arranged above the valve cover, the valve core comprises a throttling body, the throttling body is tightly matched with the valve body, the outer part of the throttling body is communicated with a water inlet, a cavity is arranged in the throttling body and is communicated with a water outlet, a plurality of throttling holes are uniformly distributed in the outer part of the throttling body, the throttling holes enable the cavity in the throttling body to be communicated with the water inlet, a valve clack is in sliding fit in the cavity and controls the opening and closing of the throttling hole in a sliding manner; the utility model discloses the structure is ingenious, the cooperation of the throttle body that sets up in the case and throttle piece for the impulsive force of medium obtains great alleviating, reduces its impact to the valve body, prolongs the life of valve body.

Description

Regulating valve

Technical Field

The device relates to the technical field of valves, in particular to a regulating valve.

Background

The regulating valve belongs to a control valve series, mainly functions to regulate parameters such as pressure, flow, temperature and the like of a medium, and is a final control element in a process loop.

The existing regulating valve has the functions of regulating medium flow and pressure, but the impact force of the medium on the valve body is not treated when the medium passes through the valve clack from the inlet, so that the medium has stronger impact force and acts on the valve body, the inner cavity of the valve body is damaged, or the valve clack is abraded, and the problems of poor sealing and leakage of the regulating valve are caused.

SUMMERY OF THE UTILITY MODEL

For overcoming prior art's defect, the utility model provides a governing valve, it is big that medium impact force is big in its aim at solution governing valve, causes the problem of valve body damage.

The technical scheme for solving the technical problem is as follows: the governing valve, the valve comprises a valve body, be provided with the case in the valve body, the valve body top is equipped with the valve gap, wear to be equipped with the valve rod in the valve gap, the valve gap top is equipped with drive arrangement, the case includes the throttle body, the throttle body closely cooperates with the valve body, throttle external portion and water inlet intercommunication, throttle internal portion is equipped with the cavity, cavity and delivery port intercommunication, throttle external portion equipartition has a plurality of orifices, the orifice makes throttle internal cavity and water inlet intercommunication, sliding fit has the valve clack in the cavity, the switching of valve clack sliding control orifice, valve clack and valve rod fixed connection, the throttle piece has been placed in the orifice, zero clearance between throttle piece outer wall and the throttle hole inner wall, the runner has been.

The utility model discloses the structure is ingenious, the cooperation of the throttle body that sets up in the case and throttle piece for the impulsive force of medium obtains great alleviating, reduces its impact to the valve body, prolongs the life of valve body.

Drawings

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

Fig. 2 is a schematic cross-sectional view of the middle fluid saving device of the present invention.

Fig. 3 is a schematic sectional view of the assembled fluid-saving device and throttle block of the present invention.

Fig. 4 is a schematic view of a three-dimensional structure of the throttling block of the present invention.

Fig. 5 is a schematic diagram of a three-dimensional structure of the throttling block in the present invention.

Fig. 6 is a schematic cross-sectional view of the throttle block of the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As can be seen from fig. 1 to 6, the regulating valve comprises a valve body 1, a valve cover 2 is arranged above the valve body 1, a valve rod 3 penetrates through the valve cover 2, a driving device 4 is arranged above the valve cover 2, a throttling body 5 is arranged in the valve body 1, the throttling body 5 is tightly matched with the valve body 1, the outside of the throttling body 5 is communicated with a water inlet 6, a cavity 7 is arranged inside the throttling body 5, the cavity 7 is communicated with a water outlet 8, a plurality of throttling holes are uniformly distributed outside the throttling body 5, the throttling holes enable the cavity 7 inside the throttling body 5 to be communicated with the water inlet 6, a valve clack 9 is arranged in the cavity 7 in a sliding fit mode, the valve clack 9 controls the throttling holes to be opened and closed in a sliding mode, the valve clack 9 is fixedly connected with the valve rod 3, a throttling block 10 is arranged in each throttling hole.

The upper portion in valve gap 2 be equipped with the packing 11 that is located the outside of valve rod 3, packing 11 plays sealed effect, packing 11 adopts PTFE/flexible graphite, packing 11 presses the cover fixed on valve gap 2 through packing 11 pressure cover, packing 11 presses the cover top and is equipped with packing 11 gland 12.

An adjusting nut 13 is arranged between the driving device 4 and the valve rod 3 and is used for adjusting the limit position of the valve clack 9 in the valve body 1.

A support 14 is arranged between the valve cover 2 and the driving device 4, a stroke indicator 15 is fixed on the support 14, and an indicating needle 16 is fixed on the valve rod 3 and used for visually displaying the opening degree of the valve clack 9, so that the flow can be conveniently adjusted.

The driving device 4 is an electric actuator.

The flow passage comprises a spiral groove 17 arranged outside the throttling block 10, one end of the throttling body 5 is provided with an inlet 18 communicated with the spiral groove 17, the other end of the spiral groove 17 does not exceed the throttling body 5, an outlet passage 19 is arranged inside the throttling body 5, the inner end of the outlet passage 19 is communicated with the other end of the spiral groove 17, the length of the flow passage prolongs the circulation path of a medium, the flowing direction of the medium is changed for many times, and the throttling and pressure reducing effects are achieved.

When the utility model is used in a concrete way,

when the device is installed in a pipeline, a medium flows into the valve body 1 from the water inlet 6, firstly passes through the throttling block 10, enters the spiral groove 17 from the inlet 18 of the throttling block 10, passes through the spiral groove 17, enters the cavity 7 of the throttling body 5 from the outlet channel 19, and then enters the next pipeline from the water outlet 8.

The flow passage on the throttling block 10 is composed of the spiral groove 17, the outlet passage 19 and the passage between the spiral groove and the outlet passage, the flowing distance of the medium is integrally prolonged, the flowing direction of the medium is continuously changed, the medium is decelerated, the pressure of the medium is further reduced, and the throttling purpose is effectively realized.

The opening and closing of the orifice are adjusted by controlling the lifting of the valve clack 9, so that the flow is adjusted, when a part of the orifice is opened, medium does not have large impact on the valve clack 9 when flowing into the cavity 7, and the damage degree of the valve clack 9 can be reduced.

Compared with the prior art, the utility model, following beneficial effect has: the throttle body and the throttle block are adopted to replace the original valve clack structure, the medium circulation path is prolonged, the throttling and pressure reducing effects are achieved, the damage of medium impact on the valve body is reduced, and the service life of the valve body is prolonged.

Claims

1. The regulating valve comprises a valve body (1), a valve cover (2) is arranged above the valve body (1), a valve rod (3) penetrates through the valve cover (2), and a driving device (4) is arranged above the valve cover (2), and is characterized in that a throttling body (5) is arranged in the valve body (1), the throttling body (5) is tightly matched with the valve body (1), the outer part of the throttling body (5) is communicated with a water inlet (6), a cavity (7) is arranged in the throttling body (5), the cavity (7) is communicated with a water outlet (8), a plurality of throttling holes are uniformly distributed in the outer part of the throttling body (5), the throttling holes enable the cavity (7) in the throttling body (5) to be communicated with the water inlet (6), a valve clack (9) is in sliding fit in the cavity (7), the valve clack (9) controls the opening and closing of the throttling holes in a sliding manner, the valve clack (9) is fixedly connected with the valve rod (3), a flow passage is formed in the throttling block (10), and the flow passage can buffer the impact force of a medium.

2. The regulating valve according to claim 1, characterized in that the packing (11) positioned outside the valve rod (3) is arranged above and inside the valve cover (2), the packing (11) is fixedly pressed on the valve cover (2) through a packing (11) pressing sleeve, and a packing (11) pressing cover (12) is arranged above the packing (11) pressing sleeve.

3. The regulating valve according to claim 1, characterized in that an adjusting nut (13) is arranged between the drive means (4) and the valve stem (3).

4. The regulating valve according to claim 1, characterized in that a bracket (14) is arranged between the valve cover (2) and the driving device (4), a stroke indicator (15) is fixed on the bracket (14), and an indicator needle (16) is fixed on the valve rod (3).

5. The regulating valve according to claim 1, characterized in that the drive means (4) is an electric actuator.

6. The regulating valve according to claim 1, characterized in that the flow passage comprises a spiral groove (17) arranged outside the throttle body (10), one end of the throttle body (5) is provided with an inlet (18) communicated with the spiral groove (17), the other end of the spiral groove (17) does not exceed the throttle body (5), an outlet passage (19) is arranged inside the throttle body (5), and the inner end of the outlet passage (19) is communicated with the other end of the spiral groove (17).