CN202510725U

CN202510725U - Corrugated pipe sampling valve

Info

Publication number: CN202510725U
Application number: CN201220127264XU
Authority: CN
Inventors: 叶颖; 涂志金; 王中梁; 张作银; 张作芳
Original assignee: WENZHOU JINXIN VALVE CO Ltd
Current assignee: WENZHOU JINXIN VALVE CO Ltd
Priority date: 2012-03-29
Filing date: 2012-03-29
Publication date: 2012-10-31
Anticipated expiration: 2022-03-29

Abstract

The utility model relates to a sampling valve, in particular to a corrugated pipe sampling valve. According to the technical scheme, the corrugated pipe sampling valve comprises a valve body, a piston rod and a driving piece, wherein the valve body is provided with a valve cavity and a medium inlet and a medium extraction port which are respectively communicated with the valve cavity; the piston rod comprises a sealed end, a linkage end and a connecting end, wherein the sealed end extends to the valve cavity, and the linkage end is connected with the driving piece; the piston rod is driven by the driving piece, so that the sealed end of the piston rod is sealed with or separated from the medium inlet; a sealing assembly is arranged between the connecting end of the piston rod and the inner wall of the valve body; an elastic corrugated pipe is sleeved outside a part between the sealed end and the connecting end of the piston rod; the two axial ends of the elastic corrugated pipe are respectively connected with the sealed end of the piston rod and the sealing assembly at the connecting end of the piston rod; and a piston rod protecting cavity is formed between the inner wall of the elastic corrugated pipe and the piston rod. By adopting the technical scheme, the corrugated pipe sampling valve prevents corrosion and bacteria propagation.

Description

The bellows sampling cock

Technical field

The utility model relates to a kind of sampling cock, particularly a kind of bellows sampling cock.

Background technique

Sampling cock is the valve that is used to obtain pipeline or fermenting tub medium sample, much needing often dielectric sample to be carried out chemico-analytic occasion, how can use special sampling cock.

At present; The sampling cock that is used on market and the data medium in pipeline or the fermenting tub is carried out extraction and analysis mainly by valve body, be located at the piston rod in the valve body and form with the actuator of piston rod interlock; Medium entry port that be provided with valve pocket in the valve body, is communicated with respectively with valve pocket and medium extract mouth; Piston rod is in the valve pocket and extends to valve body entry port place it is sealed, and when needs were taken a sample to medium, piston rod was through the driving of actuator; Break away to remove the sealing at medium entry port place with the medium entry port; The medium that is extracted then flow in the valve pocket of valve body through the medium entry port, and the approach valve pocket extracts a mouthful outflow by medium then, for operator's sample analysis.

In order to guarantee the sealing between actuator and the valve body, valve body and piston rod and be in valve pocket and and and the actuator of piston rod interlock between some Sealings are set respectively usually.Yet there is more dead angle between piston rod and the valve body; When the medium that is extracted enters into the valve pocket inside of valve body; A small amount of medium enters in the dead angle between piston rod or Sealing and the valve body, and this a spot of medium can not be discharged to outside the valve body, in the course of time then can breed bacteria.Have influence on the analysis and the performance of later stage extraction medium; Because the medium major part that is extracted has bigger corrosivity, the time regular meeting situation of corrosion appears piston rod is caused.

Summary of the invention

To the deficiency that existing technology exists, the utility model provides a kind of corrosion protection, has prevented the bellows sampling cock of bacteria breed.

For realizing above-mentioned purpose; The utility model provides following technological scheme: a kind of bellows sampling cock; Include valve body, be located at piston rod and piston rod in the valve body along the actuator of valve body slippage; Medium entry port and medium extraction mouth that valve body is provided with valve pocket and is communicated with valve pocket respectively, piston rod includes sealed end, interlock end and connects sealed end and the connecting end of the end that links, and its sealed end extends to the valve pocket place; The interlock end is connected with actuator; The driving of piston rod through actuator makes its sealed end with the sealing of medium entry port or separate, and is provided with black box between the connecting end of piston rod and the inwall of valve body, and it is characterized in that: sealed end and the part between the connecting end on the said piston rod are arranged with elastic bellows outward; The axial two ends of this elastic bellows are connected with the sealed end of piston rod and the black box that is in piston rod connecting end place respectively, form the piston rod protection chamber between the inwall of elastic bellows and the piston rod.

Wherein, The sealed end place of piston rod be provided with valve body on the adaptive bellows flap of medium entry port; The installation place that is positioned at black box on the said valve body is provided with boss; Black box includes the sealing gasket that the cross section of fitting with this boss sealing is " T " font, and an end and bellows flap that elastic bellows is axial are wholely set, and the other end and sealing gasket are wholely set.

Adopt technique scheme; Through between the sealed end of piston rod and black box, elastic bellows being set, form the piston rod protection chamber between elastic bellows and the piston rod, with this piston rod and the valve pocket that gets into medium are isolated; Make the medium in the valve pocket can not flow to the place, dead angle between piston rod and black box and the valve body; Effectively prevented growing of bacterium, also piston rod has been played protective action simultaneously, prevented that piston rod is by dielectric corrosion; And elastic bellows has elastic reaction, and it is the PTFE material, can carry high temperature, under the situation of high temperature and normal temperature alternation, can keep the better elastic distortion, can anti-strong acid and highly basic, improved the usability of valve body.

The utility model further is set to: the medium of valve body extracts a mouthful place and is provided with the extraction control valve; This extraction control valve is a ball valve; Extracting control valve includes with medium and extracts a ball valve body that mouth is connected, is located at spheroid and the handle of driving spheroid in the ball valve body; Ball valve body is provided with inlet passage, flow pass and is communicated with the connection chamber of inlet passage and flow pass; Spheroid is in the connection chamber; Spheroid is provided with the runner that constitutes inlet passage and flow pass conducting or sealing, and ball valve body is positioned at a medium extraction mouthful end place that is connected and is provided with and a medium extraction mouthful adaptive connection mouth, and ball valve body is provided with external connector with respect to extracting a mouthful the other end place that is connected an end with medium.

Adopt technique scheme, mention a mouthful place at the medium of valve body the extraction control valve is set, can control the amount of mentioning of medium on the one hand, can make operator on the other hand when need not to extract medium, can implement to close, prevent that medium from leaking; The setting of external connector has then made things convenient for and being connected of external equipment and pipeline on the ball valve body.

Below in conjunction with accompanying drawing the utility model is further described.

Description of drawings

Fig. 1 is the utility model embodiment's a structural representation;

Fig. 2 is the I portion enlarged diagram of Fig. 1;

Fig. 3 is the II portion enlarged diagram of Fig. 1.

Embodiment

Like Fig. 1-a kind of bellows sampling cock shown in Figure 3, include valve body 1, be located at piston rod 2 and piston rod 2 in the valve body 1 along the actuator 3 of valve body slippage, this actuator 3 is handle or handwheel; Valve body 1 is provided with valve pocket 11 and the medium entry port 12 that is communicated with valve pocket 11 respectively and medium and extracts mouth 13; Piston rod 2 includes sealed end 21, interlock end 22 and connects sealed end 21 and the connecting end 23 of interlock end 22; Its sealed end 21 extends to valve pocket 11 places; Interlock end 22 is connected with actuator 3, and the driving of piston rod 2 through actuator 3 makes its sealed end 21 seal with medium entry port 12 or separate, and is provided with black box 4 between the connecting end 23 of piston rod 2 and the inwall of valve body 1.Sealed end 21 on the piston rod 2 and the part between the connecting end 23 are arranged with elastic bellows 5 outward; The axial two ends of this elastic bellows 5 are connected with the sealed end 21 of piston rod 2 and the black box 4 that is in piston rod 2 connecting ends 23 places respectively, form piston rod protection chamber 6 between the inwall of elastic bellows 5 and the piston rod 2.Through between the sealed end 21 of piston rod 2 and black box 4, elastic bellows 5 being set; Form piston rod protection chamber 6 between elastic bellows 5 and the piston rod 2; With this piston rod 2 and the valve pocket that gets into medium 11 are isolated, make the medium in the valve pocket 11 can not flow to the place, dead angle between piston rod 2 and black box 4 and the valve body 1, effectively prevented growing of bacterium; Simultaneously also piston rod 2 has been played protective action, prevented that piston rod 2 is by dielectric corrosion; And elastic bellows 5 has elastic reaction, and it is the PTFE material, can carry high temperature, under the situation of high temperature and normal temperature alternation, can keep the better elastic distortion, can anti-strong acid and highly basic, improved the usability of valve body 1.

In the utility model embodiment; Sealed end 21 places of piston rod 2 be provided with valve body 1 on the adaptive bellows flap 51 of medium entry port 12, the installation place that is positioned at black box 4 on the valve body 1 is provided with boss 14, black box 4 includes the sealing gasket 41 that the cross section of fitting with 14 sealings of this boss is " T " font; Good seal performance is set like this; And valve body 1 is made up of through the shell 15 of screw-threaded coupling two halves, is provided with seal ring 16 between two shells 15, is provided with like this to have made things convenient for to install and dismounting; Also be provided with setting sleeve 7 between the inwall of piston rod 2 and valve body 1, the concentricity the when setting of setting sleeve 7 can keep piston rod 2 along valve body 1 axial slip guarantees the sealing of piston rod 2 and valve body 1 with this.The utility model embodiment Elastic Wave line pipe 5 an axial end and bellows flaps 51 are wholely set, and the other end and sealing gasket 41 are wholely set.

In the utility model embodiment, can control the amount of mentioning of medium when extracting medium in order to make operator, and when need not to extract medium, can medium be extracted mouthful 13 shutoff, prevent that medium from leaking and environment is polluted.The medium of valve body 1 extracts mouthful 13 places and is provided with extraction control valve 8; This extracts control valve 8 is ball valve; Extracting control valve 8 includes and medium extraction mouthful 13 ball valve bodies that are connected 81; Be located at the spheroid 82 in the ball valve body 81 and drive the handle 83 of spheroid 82; Ball valve body 81 is provided with admission passage 811; The connection chamber 813 of flow pass 812 and connection admission passage 811 and flow pass 812; Spheroid 82 is in the connection chamber 813; Spheroid is provided with the runner 821 that constitutes admission passage 811 and flow pass 812 conductings or sealing; Ball valve body 81 is positioned at and extracts mouthful 13 end places that are connected with medium and be provided with medium and extract mouthfuls 13 adaptive connectors 814, and ball valve body 81 is provided with external connector 84 with respect to extracting mouth 13 other end places that are connected an end with medium; Being provided with of this place's external connector 84 made things convenient for being connected of ball valve body 81 and external equipment and pipeline.

Claims

1. bellows sampling cock; Include valve body, be located at piston rod and piston rod in the valve body along the actuator of valve body slippage; Medium entry port and medium extraction mouth that valve body is provided with valve pocket and is communicated with valve pocket respectively; Piston rod includes sealed end, interlock end and connects sealed end and the connecting end of interlock end; Its sealed end extends to the valve pocket place, and interlock end is connected with actuator, and the driving of piston rod through actuator makes its sealed end seal with the medium entry port or separate; Be provided with black box between the connecting end of piston rod and the inwall of valve body; It is characterized in that: sealed end and the part between the connecting end on the said piston rod are arranged with elastic bellows outward, and the axial two ends of this elastic bellows are connected with the sealed end of piston rod and the black box that is in piston rod connecting end place respectively, form the piston rod protection chamber between the inwall of elastic bellows and the piston rod.

2. bellows sampling cock according to claim 1; It is characterized in that: the sealed end place of described piston rod be provided with valve body on the adaptive bellows flap of medium entry port; The installation place that is positioned at black box on the said valve body is provided with boss; Black box includes the sealing gasket that the cross section of fitting with this boss sealing is " T " font, and an end and bellows flap that elastic bellows is axial are wholely set, and the other end and sealing gasket are wholely set.

3. bellows sampling cock according to claim 1 and 2; It is characterized in that: the medium of said valve body extracts a mouthful place and is provided with the extraction control valve; This extraction control valve is a ball valve; Extracting control valve includes with medium and extracts a ball valve body that mouth is connected, is located at spheroid and the handle of driving spheroid in the ball valve body; Ball valve body is provided with inlet passage, flow pass and is communicated with the connection chamber of inlet passage and flow pass, and spheroid is in the connection chamber, and spheroid is provided with the runner that constitutes inlet passage and flow pass conducting or sealing; Ball valve body is positioned at a medium extraction mouthful end place that is connected and is provided with and a medium extraction mouthful adaptive connection mouth, and ball valve body is provided with external connector with respect to extracting a mouthful the other end place that is connected an end with medium.