CN207791715U - A kind of formaldehyde sealing gland-fluid-tight system - Google Patents
A kind of formaldehyde sealing gland-fluid-tight system Download PDFInfo
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- CN207791715U CN207791715U CN201721520364.8U CN201721520364U CN207791715U CN 207791715 U CN207791715 U CN 207791715U CN 201721520364 U CN201721520364 U CN 201721520364U CN 207791715 U CN207791715 U CN 207791715U
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Abstract
The utility model is related to a kind of formaldehyde sealing gland fluid-tight systems, including formaldehyde storage tank, teletransmission pressure gauge, liquid seal trough, automatic control quck-opening valve, PLC and a plurality of pipeline, formaldehyde storage tank is seal groove and top is equipped with teletransmission pressure gauge, the gas-phase space of formaldehyde storage tank is connected to non-oxidizing gas delivery pipe a and connecting tube b respectively, connecting tube b is connected to the liquid Space of liquid seal trough, automatic control quck-opening valve is installed, teletransmission pressure gauge signals and automatic control quck-opening valve connect and compose closed-loop control system with PLC respectively on air shooter a.A kind of formaldehyde sealing gland fluid-tight system of the utility model, it is easy to operate, production efficiency is high, sealing gland cooperation liquid seal trough is carried out using the non-oxidizing gas such as nitrogen carry out fluid-tight simultaneously, the internal pressure of sealing formaldehyde storage tank can not only be effectively controlled, ensures the safe and orderly progress of industrial production activities, and the gaseous formaldehyde of the absorption of liquid seal trough can also be applied to industrial production again, production cost is low, there is fabulous promotional value.
Description
Technical field
The utility model belongs to sealing device field, and in particular to a kind of formaldehyde sealing gland-fluid-tight system.
Background technology
Formaldehyde, also known as formaldehyde are a kind of colourless chemical raw material for having specific stimulation smell, soluble easily in water and ethyl alcohol.First
Aldehyde belongs to simple production process, and the public chemical products of raw material supply abundance, are the trunks in Downstream Products of Methanol chain, can be wide
It is general to be applied to the fields such as weaving, the preparation of timber and listerine.
But since formaldehyde itself has human body certain harmfulness, the irritant smell of formaldehyde, low concentration can smell,
For a long time, low concentration Formaldehyde Exposed can cause headache, dizzy, weak, sensory disturbance, immunity to reduce, and may occur in which drowsiness, memory
Power declines or symptoms, the slow poisonings such as neurasthenia, mental depression are also huge, Long Term Contact first to the harm of respiratory system
Aldehyde can cause respiratory dysfunction and hepatogenotoxicity lesion, show as hepatocellular injury and liver radiation energy exception etc..In addition, air
With, if extended residual formaldehyde, the ring ecological balance is broken in the death of the microorganism in also being caused to environment in soil.Therefore, it closes
The utilization of reason is with storage formaldehyde with regard to particularly important.
It in industrial production activities, causes damages to human body and environment in order to avoid the volatilization of formaldehyde, formaldehyde can generally be protected
There are in the holding vessel of sealing, but in the actual use process, formaldehyde still can inevitably with outside air or storage
It deposits the air inside tank to be in contact, because the oxygen in air can be reacted with formaldehyde, generates formic acid：2HCHO+O2=2HCOOH, because
This, can reduce the utilization ratio of formaldehyde and influence being normally carried out for industrial production activities, simultaneously as formaldehyde has volatility,
Its density and the density of air are almost equal, and the formaldehyde gas of volatilization can be gathered in storage tank tank top, not to external diffusion, increase
The pressure of equipment operation, some potential safety problems is brought to the operation of industrial equipment.
Therefore, it is high and can effectively control the formaldehyde gas of the internal pressure of sealing formaldehyde storage tank to study a kind of formaldehyde utilization rate
Envelope-fluid-tight system has a very important significance.
Utility model content
The purpose of this utility model is to overcome formaldehyde utilization rate is low in continuous production activity in the prior art, first
The internal pressure of aldehyde storage tank is high, the big disadvantage of equipment operational safety hidden danger, and it is high and can be effective to provide a kind of formaldehyde utilization rate
Formaldehyde sealing gland-fluid-tight system of the internal pressure of control sealing formaldehyde storage tank.
In order to achieve the above object, the technical solution adopted in the utility model is：
A kind of formaldehyde sealing gland-fluid-tight system, including formaldehyde storage tank, teletransmission pressure gauge, liquid seal trough, automatic control quck-opening valve, PLC and
A plurality of pipeline；
Formaldehyde storage tank is that seal groove and top are equipped with teletransmission pressure gauge, the gas-phase space of formaldehyde storage tank respectively with it is non-oxide
Property air shooter a is connected to connecting tube b, and connecting tube b is connected to the liquid Space of liquid seal trough, is equipped on air shooter a
Automatic control quck-opening valve, teletransmission pressure gauge and automatic control quck-opening valve connect and compose closed-loop control system with PLC respectively, by teletransmission pressure gauge pressure
Power shows that PT and automatic control quck-opening valve aperture and feedback signal are shown on PLC control cabinet panel, and passes through PLC remote control automatic controls
The valve opening of quck-opening valve, the pressure for realizing teletransmission pressure gauge and the valve opening of automatic control quck-opening valve interlock, by formaldehyde storage tank
Gas-phase space pressure control in a certain range, when the pressure that teletransmission pressure gauge detects is excessive, PLC control automatic control open soon
Valve reduces valve opening, and the amount that nitrogen enters formaldehyde storage tank can reduce, and gas-phase space pressure reduces, when teletransmission pressure gauge detects
Pressure it is too small when, PLC controls automatic control quck-opening valve and increases valve opening, and more nitrogen enter in formaldehyde storage tank, to by
Step improves the gas-phase space pressure of formaldehyde storage tank.
There is formaldehyde volatility, the formaldehyde gas of volatilization to be gathered at the top of formaldehyde storage tank.The density of formaldehyde and air it is close
Spend almost equal, the formaldehyde of volatilization, cannot be by the liquid absorption in liquid seal trough also not to external diffusion.Fluid-tight is arranged in the utility model
The purpose of slot is：
1) make to keep certain pressure at the top of formaldehyde storage tank, drive the formaldehyde gas of volatilization out of at the top of formaldehyde storage tank quilt in time
Liquid absorption in liquid seal trough, while formaldehyde gas being diluted；
2) because the oxygen in air can be reacted with formaldehyde, formic acid is generated：2HCHO+O2=2HCOOH, nitrogen, which is added, to incite somebody to action
Formaldehyde and air exclusion；
3) moisture-free and formaldehyde are immiscible in the protective gas such as nitrogen, will not react；
The effect of the utility model liquid seal trough is to make to keep positive pressure at the top of storage tank, while ensureing to let out when storage tank hypertonia
Pressure ensures equipment safety.
As preferred technical solution：
A kind of formaldehyde sealing gland-fluid-tight system as described above, the nozzle of the connecting tube b are located in liquid seal trough below liquid level
100mm。
A kind of formaldehyde sealing gland-fluid-tight system as described above, the formaldehyde storage tank are vertical stainless steel storage tank, the formaldehyde
Storage tank cylinder is equipped with liquid level gauge (LG), and liquid level gauge is connect with PLC, shows (LIA) in PLC control cabinet panel liquid level gauge liquid level
Upper display.
A kind of formaldehyde sealing gland-fluid-tight system as described above, the formaldehyde reservoir bottom outside are equipped with thermometer and heat tracing
Pipeline when the relatively low long-time of temperature is stood, is easy crystallization, heat tracing pipeline is able to maintain that first because formaldehyde is more sensitive to temperature
The temperature of aldehyde is not less than 45 DEG C.
A kind of formaldehyde sealing gland-fluid-tight system as described above, the liquid Space of the formaldehyde storage tank pass through connecting tube c and first
Aldehyde flowmeter is connected to, and metering pump integrated system is equipped on connecting tube c.
A kind of formaldehyde sealing gland-fluid-tight system as described above, the liquid seal trough are connect with filler pipe, the nozzle position of filler pipe
Below liquid level；It is equipped with overflow port more than the liquid seal trough liquid level and close to liquid level position；The liquid seal trough liquid level is with upper bit
Equipped with evacuation port；The fluid-tight groove sidewall is equipped with glass mirror, convenient for liquid level in observation liquid seal trough.
A kind of formaldehyde sealing gland-fluid-tight system as described above, the liquid seal trough go out being provided with liquid phase at the 100mm of bottom
Mouthful, the liquid Space of liquid seal trough is passed through into connecting tube d and connecting tube e with the gas-phase space of formaldehyde storage tank and formaldehyde flowmeter respectively
It is connected to, discharging pump is installed on connecting tube d, connecting tube e is connected to the entrance of the metering pump, and fluid-tight is by absorbing the gas to volatilize
After phase formaldehyde, either formaldehyde storage tank is squeezed into discharging pump or squeeze into the use of chlorate decomposing system with metering pump.
A kind of formaldehyde sealing gland-fluid-tight system as described above, the liquid seal trough are being provided with blowdown at the 100mm of bottom
Mouthful.
A kind of formaldehyde sealing gland-fluid-tight system as described above installs multiple check-valves in the multiple connecting tube.
Advantageous effect：
(1) a kind of formaldehyde sealing gland-fluid-tight system of the utility model, is controlled using PLC, easy to operate, and production efficiency is high.
(2) a kind of formaldehyde sealing gland-fluid-tight system of the utility model, during use, can effectively avoid formaldehyde with
The utilization ratio of the contact of air, formaldehyde is high.
(3) a kind of formaldehyde sealing gland-fluid-tight system of the utility model is carried out using other non-oxidizing gases such as nitrogen
Sealing gland coordinates liquid seal trough to carry out fluid-tight, can not only effectively control the internal pressure of sealing formaldehyde storage tank, ensures industrial production activities
Safe and orderly progress, and the gaseous formaldehyde of the absorption of liquid seal trough can also be applied to industrial production again, and production cost is low, has
Fabulous promotional value.
Description of the drawings
Fig. 1 is the utility model formaldehyde sealing gland-fluid-tight system schematic；
Fig. 2 is the utility model fluid-tight slot structure schematic diagram；
Wherein, 1- formaldehyde storage tank；2- liquid seal troughs；3- automatic control quck-opening valves；4-PLC；5- metering pumps；6- dischargings pump；7- heat tracings
Pipeline；8- glass mirrors.
Specific implementation mode
The following further describes the utility model with specific embodiments.It should be understood that these embodiments are merely to illustrate
The utility model rather than limitation the scope of the utility model.In addition, it should also be understood that, having read in the utility model instruction
After appearance, those skilled in the art can make various changes or modifications the utility model, and such equivalent forms are equally applicable to
The scope of the appended claims of the present application.
As shown in Figure 1, for the utility model a kind of formaldehyde sealing gland-fluid-tight system, including formaldehyde storage tank 1, liquid seal trough 2,
Automatic control quck-opening valve 3, PLC 4, teletransmission pressure gauge and a plurality of pipeline；
Formaldehyde storage tank 1 is vertical stainless steel piece sealing reservoir, and top is equipped with teletransmission pressure gauge (PT), the gas of formaldehyde storage tank 1
Phase space is connected to non-oxidizing gas delivery pipe a and connecting tube b respectively, and connecting tube b is connected to the liquid Space of liquid seal trough 2,
Automatic control quck-opening valve 3 is installed, teletransmission pressure gauge (PT) and automatic control quck-opening valve 3 are connected and composed with PLC 4 respectively on air shooter a
Teletransmission manometer pressure is shown the control of (PT) and 3 aperture of automatic control quck-opening valve and feedback signal in PLC 4 by closed-loop control system
It is shown on cabinet panel, and by the valve opening of 4 remote control automatic control quck-opening valves 3 of PLC, realizes teletransmission pressure gauge (PT)
Pressure and the valve opening of automatic control quck-opening valve 3 interlock, in a certain range by the gas-phase space pressure control of formaldehyde storage tank 1, when
When the pressure that teletransmission pressure gauge detects is excessive, PLC 4 controls automatic control quck-opening valve 3 and reduces valve opening, and nitrogen enters formaldehyde storage
The amount of slot can reduce, and gas-phase space pressure reduces, and when the pressure that teletransmission pressure gauge detects is too small, PLC4 control automatic controls are opened soon
Valve increases valve opening, and more nitrogen enter in formaldehyde storage tank 1, to step up the gas-phase space pressure of formaldehyde storage tank 1
Power；
The liquid Space of formaldehyde storage tank 1 is connected to by connecting tube c with formaldehyde flowmeter, and metering pump 5 is equipped on connecting tube c
Integrated system.The liquid Space of liquid seal trough 2 respectively with the gas-phase space of formaldehyde storage tank 1 and formaldehyde flowmeter by connecting tube d and
Connecting tube e is connected to, and discharging pump 6 is equipped on connecting tube d, and connecting tube e is connected to the entrance of 5 integrated system of metering pump, fluid-tight warp
It crosses after the gaseous formaldehyde for absorbing volatilization, either squeeze into formaldehyde storage tank 1 with discharging pump 6 or is squeezed into 5 integrated system of metering pump
Chlorate decomposing system uses, and 1 cylinder of formaldehyde storage tank is equipped with liquid level gauge, and liquid level gauge (LG) is connect with PLC 4, by liquid level gauge liquid
Position shows (LIA) on PLC control cabinet panel, since formaldehyde is more sensitive to temperature, when the relatively low long-time of temperature is stood, is easy
Crystallization, therefore it is equipped with thermometer and heat tracing pipeline 7 in 1 bottom outside of formaldehyde storage tank, it is passed into heat tracing pipe from steam out-of-bounds
The temperature of formaldehyde is maintained to be not less than 45 DEG C in road 7；
As shown in Fig. 2, for the structural schematic diagram of the utility model liquid seal trough 2, the material of liquid seal trough 2 is SUS304 or glass
Steel, effect are so that 1 top of formaldehyde storage tank is kept positive pressure, while ensureing pressure release when formaldehyde 1 hypertonia of storage tank, ensure equipment peace
Entirely.N1For liquid-phase outlet, aperture position is apart from 2 bottom 100mm of liquid seal trough, import of the liquid phase after outlet outflow with discharging pump 6
It is connected, overflow port N is equipped with more than 2 liquid level of liquid seal trough and close to liquid level position2, the direct overflow of liquid of overflow to trench, N3With company
Take over b is connected and nozzle is made to be located in liquid seal trough 2 100mm, N below liquid level4For 2 filler of liquid seal trough, add water with out-of-bounds pure water
Pipe connects, and the nozzle of filler pipe is located at liquid level hereinafter, depth is unlimited, and 2 liquid level of liquid seal trough is equipped with evacuation port N with upper bit5, pressure
The gas of pressure release can be discharged when high, sewage draining exit N6In liquid seal trough 2 at the 100mm of bottom, in addition it is equipped on 2 side wall of liquid seal trough
Glass mirror 8, convenient for liquid level in observation liquid seal trough；
The multiple check valve sets installed on above-mentioned delivery pipe a and connecting tube b~connecting tube e above system convenient for inhale
Formaldehyde gas is received, production efficiency is improved, the setting of each nozzle of liquid seal trough improves the safety of equipment again, has and pushes away well
Wide value.
Claims (9)
1. a kind of formaldehyde sealing gland-fluid-tight system, it is characterized in that：It is opened soon including formaldehyde storage tank, teletransmission pressure gauge, liquid seal trough, automatic control
Valve, PLC and a plurality of pipeline；
Formaldehyde storage tank is that seal groove and top are equipped with teletransmission pressure gauge, the gas-phase space of formaldehyde storage tank respectively with non-oxidizing gas
Body delivery pipe a is connected to connecting tube b, and connecting tube b is connected to the liquid Space of liquid seal trough, and automatic control is equipped on air shooter a
Quck-opening valve, teletransmission pressure gauge and automatic control quck-opening valve connect and compose closed-loop control system with PLC respectively.
2. a kind of formaldehyde sealing gland-fluid-tight system according to claim 1, which is characterized in that the nozzle position of the connecting tube b
In 100mm below liquid level in liquid seal trough.
3. a kind of formaldehyde sealing gland-fluid-tight system according to claim 1, which is characterized in that the formaldehyde storage tank is vertical
Stainless steel storage tank, the formaldehyde storage tank cylinder are equipped with liquid level gauge, and liquid level gauge is connect with PLC.
4. a kind of formaldehyde sealing gland-fluid-tight system according to claim 1, which is characterized in that outside the formaldehyde reservoir bottom
Side is equipped with thermometer and heat tracing pipeline.
5. a kind of formaldehyde sealing gland-fluid-tight system according to claim 1, which is characterized in that the liquid phase of the formaldehyde storage tank
Space is connected to by connecting tube c with formaldehyde flowmeter, and metering pump is equipped on connecting tube c.
6. a kind of formaldehyde sealing gland-fluid-tight system according to claim 5, which is characterized in that the liquid seal trough and filler pipe
Connection, the nozzle of filler pipe are located at liquid level or less；It is equipped with overflow port more than the liquid seal trough liquid level and close to liquid level position；It is described
Liquid seal trough liquid level is equipped with evacuation port with upper bit；The fluid-tight groove sidewall is equipped with glass mirror.
7. a kind of formaldehyde sealing gland-fluid-tight system according to claim 6, which is characterized in that the liquid seal trough is the bottom of apart from
Be provided with liquid-phase outlet at portion 100mm, by the liquid Space of liquid seal trough respectively with the gas-phase space of formaldehyde storage tank and formaldehyde flowmeter
It is connected to connecting tube e by connecting tube d, discharging pump is installed on connecting tube d, connecting tube e is connected to the entrance of the metering pump.
8. a kind of formaldehyde sealing gland-fluid-tight system according to claim 7, which is characterized in that the liquid seal trough is the bottom of apart from
It is provided with sewage draining exit at portion 100mm.
9. a kind of formaldehyde sealing gland-fluid-tight system according to claim 1, which is characterized in that described connecting tube a, b, c, d with
And multiple check-valves are installed on e.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721520364.8U CN207791715U (en) | 2017-11-15 | 2017-11-15 | A kind of formaldehyde sealing gland-fluid-tight system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721520364.8U CN207791715U (en) | 2017-11-15 | 2017-11-15 | A kind of formaldehyde sealing gland-fluid-tight system |
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| Publication Number | Publication Date |
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| CN207791715U true CN207791715U (en) | 2018-08-31 |
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| CN201721520364.8U Active CN207791715U (en) | 2017-11-15 | 2017-11-15 | A kind of formaldehyde sealing gland-fluid-tight system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088648A (en) * | 2021-12-07 | 2022-02-25 | 广东盈峰科技有限公司 | Gas-liquid dual isolation method for multi-ported valve micro-reagent sampling |
-
2017
- 2017-11-15 CN CN201721520364.8U patent/CN207791715U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088648A (en) * | 2021-12-07 | 2022-02-25 | 广东盈峰科技有限公司 | Gas-liquid dual isolation method for multi-ported valve micro-reagent sampling |
| CN114088648B (en) * | 2021-12-07 | 2024-03-01 | 广东盈峰科技有限公司 | Gas-liquid dual isolation method for sampling micro-reagent of multi-way valve |
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