CN203051883U - Negative pressure detection valve - Google Patents

Negative pressure detection valve Download PDF

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Publication number
CN203051883U
CN203051883U CN 201220626944 CN201220626944U CN203051883U CN 203051883 U CN203051883 U CN 203051883U CN 201220626944 CN201220626944 CN 201220626944 CN 201220626944 U CN201220626944 U CN 201220626944U CN 203051883 U CN203051883 U CN 203051883U
Authority
CN
China
Prior art keywords
hole
negative pressure
valve body
detection
offer
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
CN 201220626944
Other languages
Chinese (zh)
Inventor
熊理贵
林忠银
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.)
Wuhan Haidelong Instrument Science & Technology Co Ltd
Original Assignee
Wuhan Haidelong Instrument Science & Technology 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 Wuhan Haidelong Instrument Science & Technology Co Ltd filed Critical Wuhan Haidelong Instrument Science & Technology Co Ltd
Priority to CN 201220626944 priority Critical patent/CN203051883U/en
Application granted granted Critical
Publication of CN203051883U publication Critical patent/CN203051883U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a negative pressure detection valve which mainly comprises a valve body; a threaded hole is arranged in the valve body; a threaded sealing valve rod is screwed in the threaded hole; an airflow hole positioned on a same axis with the threaded hole is also arranged in the valve body; a detection hole communicated with the airflow hole is also arranged in the valve body; and a pressure detection gauge is installed at the detection hole. The negative pressure detection valve has the advantages that through arranging the detection hole communicated with the airflow hole and a negative pressure pumping hole in the valve body, equipment or an instrument can be detected or can be subjected to negative pressure pumping operation; when the negative pressure detection valve needs not to be used, the airflow hole is blocked by the threaded sealing valve rod; the negative pressure detection valve is simple in structure and is convenient to use; and in order to prevent the threaded sealing valve rod from being artificially unscrewed accidentally, the threaded sealing valve rod is specially locked in the threaded hole by a nut.

Description

The detection of negative pressure valve
Technical field
The utility model relates to the technical field of valve, more particularly relates to detect the technical field of valve.
Background technique
In industrial processes, there are many equipment or appliance requires under subnormal ambient, to work or move, some equipment just need detect its subnormal ambient in work or after operation a period of time like this, see that its subnormal ambient is to maintain within the specified scope, particularly be even more important the very strict or high risk industries for ask for something.Present detecting method is pressure gauge to be directly installed on need can detect negative pressure in real time on the detection facility mostly, but the deficiency that exists like this is on the one hand after if pressure gauge damages, to change very trouble of pressure gauge, and can bring potential safety hazard; Be when continuing its inner negative pressure of increasing as if needs, just to be difficult to evacuator simply is connected with equipment on the other hand.
The model utility content
The purpose of this utility model provides a kind of simple in structure in order to solve above-mentioned deficiency exactly, and detection of negative pressure is convenient, and also detection of negative pressure valve very easily when continuing to take out negative pressure.
The technical solution that the utility model adopts in order to solve the problems of the technologies described above is as follows:
The detection of negative pressure valve, it mainly is made of valve body, offer tapped hole on the described valve body, be equipped with the thread seal valve rod in this tapped hole inward turning, on valve body, also offer the airflow hole that is positioned at same axis with this tapped hole, also offer the detection hole that is connected with airflow hole on the described valve body, at this place, detection hole the Pressure testing table is installed.
The outer end of described thread seal valve rod is positioned at tapped hole, offers polygonal blind hole or polygonal boss in the exterior edge face of this thread seal valve rod, and described valve body upper screwed hole place arranged outside has screw thread, and nut passes through this threaded closure caps at the tapped hole place.
Also offer the negative pressure hole of taking out that is connected with airflow hole on the described valve body, take out the plug that the negative pressure hole place is equipped with the band connecting tube at this.
The beneficial effect that the utility model adopts above-mentioned technical solution to reach is: by the detection hole be connected with airflow hole being set at valve body and taking out negative pressure hole, just can detect or take out the negative pressure operation to equipment or instrument, when not needing to use, by the thread seal valve rod airflow hole is blocked and got final product, simple in structure, and use very convenient, put out in order to prevent that artificial accident from revolving the thread seal valve rod, the spy utilizes nut that thread seal valve rod lock is put in tapped hole.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
By shown in Figure 1, the detection of negative pressure valve, it mainly is made of valve body 1, offer tapped hole 2 on the described valve body 1, be equipped with thread seal valve rod 3 in these tapped hole 2 inward turnings, on valve body 1, also offer the airflow hole 4 that is positioned at same axis with this tapped hole 2, utilize thread seal valve rod 3 namely can easily airflow hole 4 be blocked, also offer the detection hole 5 that is connected with airflow hole 4 on the described valve body 1, at these 5 places, detection hole Pressure testing table 6 is installed, this detection table 6 can be installed on the valve body 1 in real time, also can install when needed, take off when not required to prevent that detection table 6 from damaging, the outer end of described thread seal valve rod 3 is positioned at tapped hole 2, offer polygonal blind hole or polygonal boss in the exterior edge face of this thread seal valve rod 3, this polygonal blind hole or polygonal boss are to adopt special tool turn thread seal valve rod 3 used for convenience, described valve body 1 upper screwed hole 2 place's arranged outside have screw thread 7, nut 8 is sealed on tapped hole 2 places by this screw thread 7, in order when detecting, to take out negative pressure simultaneously, on valve body 1, also offer be connected with airflow hole 4 take out negative pressure hole 9, take out the plug 10 that negative pressure hole 9 places are equipped with the band connecting tube at this.This valve body 1 can be cross by integral manufacturing.
Detection hole 5 on the above-mentioned valve body 1 and take out negative pressure hole 9 and can merge into a hole, namely this Kong Jike plays the effect that connects the detection table, can also play the effect of connecting band connecting tube plug.

Claims (3)

1. detection of negative pressure valve, it is characterized in that: it mainly is made of valve body, offer tapped hole on the described valve body, be equipped with the thread seal valve rod in this tapped hole inward turning, on valve body, also offer the airflow hole that is positioned at same axis with this tapped hole, also offer the detection hole that is connected with airflow hole on the described valve body, at this place, detection hole the Pressure testing table is installed.
2. detection of negative pressure valve according to claim 1, it is characterized in that: the outer end of described thread seal valve rod is positioned at tapped hole, offer polygonal blind hole or polygonal boss in the exterior edge face of this thread seal valve rod, described valve body upper screwed hole place arranged outside has screw thread, and nut passes through this threaded closure caps at the tapped hole place.
3. detection of negative pressure valve according to claim 1 and 2 is characterized in that: also offer the negative pressure hole of taking out that is connected with airflow hole on the described valve body, take out the plug that the negative pressure hole place is equipped with the band connecting tube at this.
CN 201220626944 2012-11-25 2012-11-25 Negative pressure detection valve Expired - Fee Related CN203051883U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220626944 CN203051883U (en) 2012-11-25 2012-11-25 Negative pressure detection valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220626944 CN203051883U (en) 2012-11-25 2012-11-25 Negative pressure detection valve

Publications (1)

Publication Number Publication Date
CN203051883U true CN203051883U (en) 2013-07-10

Family

ID=48734836

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220626944 Expired - Fee Related CN203051883U (en) 2012-11-25 2012-11-25 Negative pressure detection valve

Country Status (1)

Country Link
CN (1) CN203051883U (en)

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Legal Events

Date Code Title Description
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: 20130710

Termination date: 20161125