CN205118299U - Pump mouth and use minimum flow valves - Google Patents

Pump mouth and use minimum flow valves Download PDF

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Publication number
CN205118299U
CN205118299U CN201520864385.6U CN201520864385U CN205118299U CN 205118299 U CN205118299 U CN 205118299U CN 201520864385 U CN201520864385 U CN 201520864385U CN 205118299 U CN205118299 U CN 205118299U
Authority
CN
China
Prior art keywords
valve
minimum flow
safety check
ball valve
ball
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201520864385.6U
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Chinese (zh)
Inventor
李本林
钟诚
张有才
靖金桃
张素珍
潘敏敏
胡昌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUBEI HIGH-MIDDLE PRESSURE VALVE Co Ltd
Original Assignee
HUBEI HIGH-MIDDLE PRESSURE VALVE Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HUBEI HIGH-MIDDLE PRESSURE VALVE Co Ltd filed Critical HUBEI HIGH-MIDDLE PRESSURE VALVE Co Ltd
Priority to CN201520864385.6U priority Critical patent/CN205118299U/en
Application granted granted Critical
Publication of CN205118299U publication Critical patent/CN205118299U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a valves belongs to high pressure valve equipment field, concretely relates to pump mouth and use minimum flow valves. Include: minimum flow valve, check valve, ball valve, wherein: open on the minimum flow valve have with the communicating water conservancy diversion hole of by path system, the water conservancy diversion hole links to each other with the check valve water inlet of by path system, the delivery port of check valve with the water inlet of ball valve links to each other. This pump mouth and use minimum flow valves can prevent bypass pipe -line system medium backward flow and prevent that high -pressure medium from to main pipe -line system's destruction, maintaining the security of system operation, lose wearing and tearing and the difficult characteristics that produce noise and vibration and have the gasproof under the poor circumstances of high pressure, each major part of its valves all adopts stainless steel preparation, and sealed face adopts a stellite build -up welding to form, wear -resistingly, resistant erodees, corrosion -resistant, sealed reliable long service life to simple structure maintains and overhauls convenience, swift.

Description

A kind of pump discharge minimum flow valve group
Technical field
The utility model relates to a kind of valve group, belongs to high pressure valve apparatus field, is specifically related to a kind of pump discharge minimum flow valve group.
Background technique
Minimum flow valve, for the high-pressure water pipeline of power plant, steel mill, mainly plays protection water pump and normally runs.But minimum flow valve complex structure of the prior art, and be difficult to prevent bypass conduit system media from refluxing, main line system high pressure medium easily destroys system, under high pressure differential easy cavitation wear, and easily produces noise and vibration.
Model utility content
The utility model mainly solves the above-mentioned technical problem existing for prior art, provides a kind of pump discharge minimum flow valve group.This pumps the mouth of a river and can prevent bypass conduit system media from refluxing and preventing main line system high pressure medium to the destruction of system, maintains system safety operation; And there is feature that cavitation weares and teares and not easily produces noise and vibration under high pressure differential; The each major part of its valve group all adopts stainless steel to make, and sealing surface adopts surfacing stellite to form, and wear-resisting, resistance to erosion, corrosion-resistant, sealing is reliable, long service life, and structure is simple, safeguards and overhauls convenient, fast.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
A kind of pump discharge minimum flow valve group, comprise: minimum flow valve, safety check, ball valve, wherein: described minimum flow valve has the pod apertures communicated with bypath system, the water intake of bypath system is connected with the safety check water intake of described safety check, and the safety check water outlet of described safety check is connected with the ball valve water intake of described ball valve.
Optimize, above-mentioned a kind of pump discharge minimum flow valve group, described minimum flow valve comprises: minimum discharge valve body, spool, wherein: be provided with lining in the minimum discharge valve pocket between the main line system water intake of minimum discharge valve body and main line system water outlet, described spool is placed in described lining; One end that described spool is connected with main line system water intake is provided with pod apertures, and its other end is arranged in the spool guide pin bushing of main line system water outlet end by valve core spring; The sidewall of described minimum discharge valve body has the bypath system water intake communicated with pod apertures.
Optimize, above-mentioned a kind of pump discharge minimum flow valve group, described safety check comprises: the check valve body having safety check water intake, safety check water outlet and safety check cavity, one end that described safety check water intake is positioned at safety check cavity is provided with seat ring, and a non-return flap matched with seat ring is fixed in described safety check cavity by rocking bar.
Optimize, above-mentioned a kind of pump discharge minimum flow valve group, described ball valve comprises: the ball valve body having ball valve water intake, water outlet, ball valve cavity, is positioned at the endoceliac ball valve seat of ball valve, be positioned at the ball core of ball valve seat, described ball core is connected with ball valve handle by ball valve rod.
Therefore, the utility model tool has the following advantages: (1) can prevent bypath system medium back flow and prevent high-pressure medium to the destruction of main line system, maintains system safety operation; (2) there is feature that cavitation weares and teares and not easily produces noise and vibration under high pressure differential; (3) each major part of valve group all adopts stainless steel to make, and sealing surface adopts surfacing stellite to form, and wear-resisting, resistance to erosion, corrosion-resistant, sealing is reliable, long service life; (4) safeguard and overhaul convenient, fast.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is minimum flow valve structural representation of the present utility model;
Fig. 3 is the structural representation of safety check of the present utility model;
Fig. 4 is ball-valve structure schematic diagram of the present utility model.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
In figure:
Minimum flow valve 1, main road flange 2; Stud 3; Hexagon nut 4; Spring washer 5; Metal ring pad 6, safety check 7, ball valve 8, bypass flange 9.
Minimum discharge valve body 1.1, spool 1.2, pilot seal ring 1.3, minimum stream valve spirotallic gasket 1.4, minimum flow valve first spring washer 1.5, fillister head screw 1.6, minimum flow valve bypass flange 1.7, restricting orifice 1.8, and cap 1.9, minimum flow valve stud 1.10, minimum flow valve second spring washer 1.11, minimum flow valve hexagon nut 1.12, spool guide pin bushing 1.13, valve core spring 1.14, water outlet flange 1.15, lining 1.16, pod apertures 1.17, main line system water intake 1.18, main line system water outlet 1.19, bypath system water intake 1.20,
Safety check 7, check valve body 7.1, seat ring 7.2, non-return flap 7.3, pad 7.4, check-valve cap 7.5, safety check bolt 7.6, rocking bar 7.7;
Ball valve 8, ball valve body 8.1, ball valve housing 8.2, ball valve bolt 8.3, nut 8.4, ball valve spirotallic gasket 8.5, ball valve seat 8.6, ball core 8.7, thrust plate 8.8, filler 8.9, pressing plate 8.10, ball valve handle 8.11, ball valve rod 8.12.
Embodiment:
As shown in Figure 1, a kind of pump discharge minimum flow valve group, comprising: minimum flow valve 1, safety check 7, ball valve 8, and wherein: the bypath system water intake of minimum flow valve 1 is connected with the water intake of safety check 7, safety check 7 water outlet is connected with the water intake of ball valve 8.
As shown in Figure 2, minimum flow valve 1 comprises: minimum discharge valve body 1.1, spool 1.2, wherein: be provided with lining 1.16 in the minimum discharge valve pocket between the main line system water intake of minimum discharge valve body 1.1 and main line system water outlet, spool 1.2 is placed in lining 1.16; One end that spool 1.2 is connected with main line system water intake is provided with pod apertures 1.17, and its other end is arranged in the spool guide pin bushing 1.13 of main line system water outlet end by valve core spring 1.14; The sidewall of minimum discharge valve body 1.1 has the bypath system water intake communicated with pod apertures 1.17.
As shown in Figure 3, safety check 7 comprises: the check valve body 7.1 having safety check water intake, water outlet and safety check cavity, one end that safety check water intake is positioned at safety check cavity is provided with seat ring 7.2, and a non-return flap 7.3 matched with seat ring 7.2 is fixed in safety check cavity by rocking bar 7.7.
As shown in Figure 4, ball valve 8 comprises: the ball valve body 8.1 having ball valve water intake, water outlet, ball valve cavity, be positioned at the ball valve seat 8.6 in ball valve body 8.1 chamber, be positioned at the ball core 8.7 of ball valve seat 8.6, ball core 8.7 is connected with ball valve handle 8.11 by ball valve rod 8.12.
After adopting said structure, minimum flow valve coordinates the work of recirculation bypath system, and high-pressure medium can be prevented the destruction of main line system, maintains system safety operation.Minimum discharge spool is mobile with piping flow or pressure change, opens and closes main line system, drives bypath system to close immediately and open, automatically keep the permissible flow that pump is minimum by pressure medium and acting force of the spring.When main line system valve wide open, bypath system valve is closed thereupon.
The utility model minimum discharge valve core adopts special streamline construction design, there is feature that cavitation weares and teares and not easily produces noise and vibration under high pressure differential, and each major part of valve group all adopts stainless steel to make, sealing surface adopts surfacing stellite to form, wear-resisting, resistance to erosion, corrosion-resistant, sealing is reliable, long service life.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.

Claims (4)

1. a pump discharge minimum flow valve group, it is characterized in that, comprise: minimum flow valve (1), safety check (7), ball valve (8), wherein: described minimum flow valve (1) sidepiece has the pod apertures communicated with bypath system, the water intake of bypath system is connected with the safety check water intake of described safety check (7), and the safety check water outlet of described safety check (7) is connected with the ball valve water intake of described ball valve (8).
2. a kind of pump discharge minimum flow valve group according to claim 1, it is characterized in that, described minimum flow valve (1) comprising: minimum discharge valve body (1.1), spool (1.2), wherein: in the minimum discharge valve pocket between the main line system water intake of minimum discharge valve body (1.1) and main line system water outlet, be provided with lining (1.16), described spool (1.2) is placed in described lining (1.16); One end that described spool (1.2) is connected with main line system water intake is provided with pod apertures (1.17), and its other end is arranged in the spool guide pin bushing (1.13) of main line system water outlet end by valve core spring (1.14); The sidewall of described minimum discharge valve body (1.1) has the bypath system water intake communicated with pod apertures (1.17).
3. a kind of pump discharge minimum flow valve group according to claim 1, it is characterized in that, described safety check (7) comprising: the check valve body (7.1) having safety check water intake, safety check water outlet and safety check cavity, one end that described safety check water intake is positioned at safety check cavity is provided with seat ring (7.2), and a non-return flap (7.3) matched with seat ring (7.2) is fixed in described safety check cavity by rocking bar (7.7).
4. a kind of pump discharge minimum flow valve group according to claim 1, it is characterized in that, described ball valve (8) comprising: the ball valve body (8.1) having ball valve water intake, water outlet, ball valve cavity, be positioned at the ball valve seat (8.6) in ball valve body (8.1) chamber, be positioned at the ball core (8.7) of ball valve seat (8.6), described ball core (8.7) is connected with ball valve handle (8.11) by ball valve rod (8.12).
CN201520864385.6U 2015-11-02 2015-11-02 Pump mouth and use minimum flow valves Expired - Fee Related CN205118299U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520864385.6U CN205118299U (en) 2015-11-02 2015-11-02 Pump mouth and use minimum flow valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520864385.6U CN205118299U (en) 2015-11-02 2015-11-02 Pump mouth and use minimum flow valves

Publications (1)

Publication Number Publication Date
CN205118299U true CN205118299U (en) 2016-03-30

Family

ID=55573913

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520864385.6U Expired - Fee Related CN205118299U (en) 2015-11-02 2015-11-02 Pump mouth and use minimum flow valves

Country Status (1)

Country Link
CN (1) CN205118299U (en)

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160330

Termination date: 20191102