CN202937846U - Easy-to-disassemble and good-air-tightness pendent check valve for laboratory ventilation system - Google Patents
Easy-to-disassemble and good-air-tightness pendent check valve for laboratory ventilation system Download PDFInfo
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- CN202937846U CN202937846U CN 201220549165 CN201220549165U CN202937846U CN 202937846 U CN202937846 U CN 202937846U CN 201220549165 CN201220549165 CN 201220549165 CN 201220549165 U CN201220549165 U CN 201220549165U CN 202937846 U CN202937846 U CN 202937846U
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- valve block
- valve
- described valve
- valve body
- safety check
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Abstract
The utility model discloses an easy-to-disassemble and good-air-tightness pendent check valve for a laboratory ventilation system, which comprises a valve body, a valve piece and a valve rod, wherein the valve body is provided with a hollow cavity as a vent channel; the hollow cavity is provided with an air inlet and an air outlet arranged at two ends; the valve rod is horizontally and detachably connected with the interior of the hollow cavity of the valve body; the valve piece is arranged in the hollow cavity and used for plugging the vent channel; one-way check structures used for inhibiting reversed flow of air and smoke are arranged between the two sides of the valve piece and the valve body; the valve piece is connected with the valve body through a hinge connection structure; and when the air is in, the valve piece is blown open so as to open the vent channel and then is closed by self-weight. According to the utility model, the check valve provided by the utility model, the valve piece and other parts of the check valve are easy to disassemble, and convenient to clean; and the phenomenon that the valve is increased in weight and is adhered by dirt, and the sealing effect is not good when the check valve is used in a chimney flue for a long time can be avoided.
Description
Technical field
The utility model relates to a kind of safety check, relates in particular to the droop safety check that a kind of laboratory ventilation system of easily removable and washable good airproof performance uses.
Background technique
At present, common flute check valve has common one-way valve (comprising the droop safety check), band spring non-return valve, electronic flue airtight valve etc.Wherein, common one-way valve is to rely on the row of wind of cigarette machine to blow valve block open, and utilizes gravity to close, although its structure is simple, is not closed completely close.The band spring non-return valve has installed spring additional closes power with increase, but is subjected to the impact of spring force, and valve often can't be opened and put in place.Keying effect flute check valve preferably is electronic flue airtight valve, but in use needs to increase extra energy consumption.
Common one-way valve, band spring non-return valve or all there is following defective in electronic flue airtight valve:
(1) safety check service time long after valve block be subject to dirty thing adhesion, cause the safety check open and close all not in place, cause the smooth and air quantity of air draft to be decayed, what is more, a large amount of flue gases can occur pour in down a chimney.
(2) most safety check for reducing the area of contact of valve block and valve body, have a circumferential weld between valve block and valve body, and purpose is to prevent blower fan from stopping using dirty thing adhesion valve block can't blow wind-force open after a few days.But if circumferential weld is excessive, when adjacent laboratory unlatching blower fan carried out blowdown, in common flue, local compression increased, and dirty gas can pour in down a chimney from this circumferential weld nearby, and the waste gas of old-fashioned flue often pours in down a chimney and causes thus.
(3) the check valve seal effect is bad, when the air draft pressure of blower fan upstairs of laboratory building and air quantity can produce the air curtain effect when larger, can completely cut off waste gas circulate in flue downstairs, make downstairs that in flue, local compression increases, the dirty gas that promotes after increased pressure in flue leaks from the bad safety check of sealing effect.
(4) be accumulated in dirty thing on safety check valve block weight is increased and safety check on open resistance increment after adding shock mount, blower fan will consume the part air quantity and overcome resistance, causes thus the exhaust air rate decay, discharges fume not smooth.Particularly the droop safety check can only be opened half owing to there being the problems referred to above, makes the exhaust air rate attenuation phenomenon more obvious.
Owing to there being the problems referred to above, safety check needs often to clean, and removes air draft effect and sealing effect with guarantee.But due to the parts such as existing safety check and valve block thereof dismounting difficulty, be difficult to realize the often requirement of cleaning.
The model utility content
The utility model purpose is to provide the droop safety check that a kind of laboratory ventilation system of easily removable and washable good airproof performance uses, the parts such as this safety check and valve block thereof are quick detachable, be convenient to clean, avoiding safety check valve block weight to occur for a long time after flue uses increases, is subjected to the phenomenons such as dirty thing adhesion, sealing effect be bad.
the purpose of this utility model is achieved through the following technical solutions: the droop safety check that a kind of laboratory ventilation system of easily removable and washable good airproof performance uses, comprise valve body, valve block and valve rod, described valve body has the hollow chamber as ventilation channel, the two ends of described hollow chamber are respectively intake grill and exhaust outlet, described valve rod laterally is detachably connected in the hollow chamber of valve body, described valve block is arranged in hollow chamber and is used for the shutoff ventilation channel, be provided with between the inwall of the two sides of described valve block and valve body for the one-way non-return structure that stops cigarette wind reverse flow, described valve rod sheet is connected on described valve rod by the structure that is articulated and connected, valve block is opened ventilation channel or is closed under the effect of its deadweight when air intake.
As a kind of mode of execution of the present utility model, be relatively set with a pair of fixed via on the sidewall of described valve body, the two ends of valve rod are adaptive being inserted in described two fixed vias respectively, realizes the valve rod dismounting so that described valve rod can move along its axis fixed via under one end applied thrust or pulling force effect.In this embodiment, valve rod two ends are separately fixed in fixed via on valve body, when needs are unpicked and washed, only need valve rod is extracted out the dismounting of valve rod and the valve block that can realize safety check.
as another mode of execution of the present utility model, the described structure that is articulated and connected comprises fixed plate, described valve block is single, described valve block is take towards the one side of described valve body intake grill as inner side surface, and be outer side surface towards the one side of described valve body exhaust outlet, described fixed plate vertically is arranged on the valve block inner side surface, described fixed plate deviates from valve block and bends to arc and be configured for hinged hinging hole with valve rod, the center line of described fixed via and hinging hole is located along the same line, described valve rod passes hinging hole and its two ends and is set in fixed via on valve body.
As a kind of optimal way, described valve rod departs from the cross central line of described valve block and installs, be that described valve rod is not to install along the cross central line of valve block, described valve rod is divided into the upper part of upper and lower two-part and valve block less than part under valve block with valve block, the row of wind that is conducive to the cigarette machine blows valve block open, and can utilize the self gravitation of valve block to close, thereby make valve block not need motor braking, reach energy-conservation purpose.
The utility model can be done following improvement: described one-way non-return structure is included in upper and lower two seal convexities that arrange on described valve interior wall, described upper and lower two seal convexities are all projecting inward to ventilation channel, described upper seal convexity is positioned at the outside of described valve block and closely cooperates with the outer side surface upper peripheral edge of described valve block, described lower seal projection is positioned at the inboard of described valve block and closely cooperates with the inner side surface lower periphery of described valve block, thereby can avoid to greatest extent waste gas to reveal, realize simultaneously the effect of one-way non-return.
Described fixed via corresponding inner orifice and outer aperture of forming respectively on the inwall of valve body and outer wall, has the gap between the both ends of the surface of described outer aperture and valve rod, be filled with the stuffing box packing for the sealing fixed via in this gap, to strengthen the sealing of safety check, avoid waste gas in fixed via place's leakage.
The utility model also can be done following improvement: under described valve block, partly departing from the center is provided with balancing weight, to increase the self gravitation of valve block, to increase the power of closing of valve block.
Described valve body is cylindrical shape, and the outer margin contour of described valve block is circular; Wherein, described upper seal convexity and lower seal projection are respectively that the circumference along valve block extends to form two ring segments on valve interior wall, and these two ring segments form a complete annulus in the projection of vertical plane.The setting of upper seal convexity and lower seal projection has numerous embodiments, coordinates angle of the present utility model to install according to different modes, all can realize the effect of the sagging sealing of valve block.
Upper and lower two seal convexities described in the utility model are made by silicon sealant.
Valve body described in the utility model adopts PV C material to make, and Main Function is to realize connecting of safety check and air system plumbing.
The material of valve rod described in the utility model is carbon steel or stainless steel.
The material of fixed plate described in the utility model is carbon steel or stainless steel.
The utility model compared with prior art has following remarkable result:
(1) valve rod of the present utility model removably is connected with valve body, thereby the parts such as valve block, valve rod that can make safety check can disassemble and clean, and avoiding safety check valve block weight to occur for a long time after flue uses increases, is subjected to the phenomenons such as dirty thing adhesion, sealing effect be bad.
(2) in the utility model in the adaptive hinging hole that is hinged on valve block of valve rod, and its two ends are separately fixed in a pair of through hole that is relatively fixed on valve body, when needs are unpicked and washed, only need to extract valve rod out can realize safety check valve body, separating of valve rod and valve block, simple and practical, operation is very easy, Quick-detachable cleaning, the advantages such as installation and maintenance are easy, has value for applications preferably, can often clean safety check, remove the dirty thing on valve block and sealing configuration, avoiding safety check weight to occur for a long time after flue uses increases, be subjected to dirty thing adhesion, the phenomenons such as sealing effect is bad, make safety check keep good service behaviour, valve block is opened to such an extent that put in place, close tightly, to have avoided the smooth and waste gas of smoke evacuation to pour in down a chimney.
(3) the utility model only utilizes the Action of Gravity Field of valve block self to carry out closing of valve block, neither needs spring pressurization to close, and valve block is fully opened, and improves discharge amount of exhaust gas, does not also need the electrical equipment braking, reduces energy consumption, thereby reduces production costs.
Description of drawings
Fig. 1 is the utility model embodiment's sectional view.
Fig. 2 is the utility model embodiment's side view.
1. valve body; 2. valve block; 3. one-way non-return structure; 4. fixed plate; 5. valve rod; 6. stuffing box packing;
31. upper seal convexity; 32. lower seal is protruding.
Embodiment
Set forth in further detail by the following examples the utility model content, but following embodiment just is used for content of the present utility model is set forth, rather than restriction, therefore in the implication suitable with claims of the present utility model and any change in scope, all should think to be included in the scope of claims.
The droop safety check that the laboratory ventilation system of Fig. 1 ~ 2 described easily removable and washable good airproof performances uses is an embodiment of the present utility model, is made of valve body 1, single valve block 2, one-way non-return structure 3 and valve rod 5.Wherein, valve body 1 adopts PVC to make, and has the hollow chamber as ventilation channel, and the two ends of hollow chamber are respectively intake grill and exhaust outlet.Be relatively set with a pair of fixed via on the sidewall of valve body 1, fixed via corresponding inner orifice and outer aperture of forming respectively on the inwall of valve body 1 and outer wall.The two ends of the valve rod 5 that carbon steel or stainless steel are made are adaptive being inserted in these two fixed vias respectively, thereby valve rod 5 laterally is connected in the hollow chamber of valve body 1, realizes valve rod 5 dismountings so that valve rod 5 can move along its axis fixed via under one end applied thrust or pulling force effect.When needs are unpicked and washed, only need valve rod is extracted out the dismounting of valve rod and the valve block that can realize safety check.Have the gap between the outer aperture of fixed via and the both ends of the surface of valve rod 5, be filled with the stuffing box packing 6 for the sealing fixed via in this gap, to strengthen the sealing of safety check, avoid waste gas in fixed via place's leakage.
One-way non-return structure 3 is by being made of silicon sealant upper and lower two seal convexities that are made of arranging on valve body 1 inwall.These upper and lower two seal convexities are respectively that the circumference along valve block 2 extends to form two ring segments on valve interior wall, and these two ring segments are all projecting inward to ventilation channel, and form a complete annulus in the projection of vertical plane.Upper seal convexity 31 is positioned at the outside of valve block 2 and closely cooperates with the outer side surface upper peripheral edge of valve block 2.Lower seal projection 32 is positioned at the inboard of valve block 2 and closely cooperates with the inner side surface lower periphery of valve block 2, thereby can avoid to greatest extent waste gas to reveal, and realizes simultaneously the effect of one-way non-return.
The making method of the present embodiment is: bore a pair of through hole that is relatively fixed on the sidewall of valve body 1, two fixed plates 4 are fixed on valve block 2 inner side surfaces, namely form hinging hole on valve block 2 inner side surfaces, the center line of hinging hole departs from the cross central line of valve block 2 and is located along the same line with the center line of fixed via.Valve rod 5 penetrates from the fixed via of valve body 1 one sides, and passes the hinging hole on valve block 2, and then two ends are separately fixed in fixed via, with the outer aperture of stuffing box packing 6 sealing fixed vias, with the enhanced leaktightness effect.Valve block 2 is forwarded to valve body 1 cross section equidirectional, squeeze into silicon sealant take valve rod 5 as the separatrix at outer side surface and the inner side surface of the place, right angle between valve body 1 inwall and 2 times parts of valve block and the place, right angle between valve body 1 inwall of part on valve block 2.In the silicon sealant moulding and solidify forward moving valve plate 2 and make silicon sealant only with valve body 1 bonding and separate with valve block 2.After solidifying, silicon sealant namely forms and the close-fitting one-way non-return structure 3 of valve block 2 on valve body 1 inwall of valve block 2 both sides.
Claims (11)
1. the droop safety check used of the laboratory ventilation system of an easily removable and washable good airproof performance, comprise valve body, valve block and valve rod, described valve body has the hollow chamber as ventilation channel, the two ends of described hollow chamber are respectively intake grill and exhaust outlet, it is characterized in that, described valve rod laterally is detachably connected in the hollow chamber of valve body, described valve block is arranged in hollow chamber and is used for the shutoff ventilation channel, be provided with between the inwall of the two sides of described valve block and valve body for the one-way non-return structure that stops cigarette wind reverse flow, described valve rod sheet is connected on described valve rod by the structure that is articulated and connected, valve block is opened ventilation channel or is closed under the effect of its deadweight when air intake.
2. the droop safety check used of the laboratory ventilation system of easily removable and washable good airproof performance according to claim 1, it is characterized in that, the described structure that is articulated and connected comprises fixed plate, described valve block is single, described valve block is take towards the one side of described valve body intake grill as inner side surface, and be outer side surface towards the one side of described valve body exhaust outlet, described fixed plate vertically is arranged on the valve block inner side surface, described fixed plate deviates from valve block and bends to arc and be configured for hinged hinging hole with valve rod, the center line of described fixed via and hinging hole is located along the same line, described valve rod passes hinging hole and its two ends and is set in fixed via on valve body.
3. the droop safety check used of the laboratory ventilation system of easily removable and washable good airproof performance according to claim 1 and 2, it is characterized in that, described valve rod departs from the cross central line of described valve block and installs, the upper part that described valve rod is divided into upper and lower two-part and valve block with valve block makes valve block can utilize self gravitation to close less than part under valve block.
4. the droop safety check used of the laboratory ventilation system of easily removable and washable good airproof performance according to claim 1, it is characterized in that, described one-way non-return structure is included in upper and lower two seal convexities that arrange on described valve interior wall, described upper and lower two seal convexities are all projecting inward to ventilation channel, described upper seal convexity is positioned at the outside of described valve block and closely cooperates with the outer side surface upper peripheral edge of described valve block, and described lower seal projection is positioned at the inboard of described valve block and closely cooperates with the inner side surface lower periphery of described valve block.
5. the droop safety check used of the laboratory ventilation system of easily removable and washable good airproof performance according to claim 4, is characterized in that, described valve body is cylindrical shape, and the outer margin contour of described valve block is circular; Wherein, described upper seal convexity and lower seal projection are respectively that the circumference along valve block extends to form two ring segments on valve interior wall, and these two ring segments form a complete annulus in the projection of vertical plane.
6. the droop safety check used of the laboratory ventilation system of easily removable and washable good airproof performance according to claim 5, is characterized in that, described upper and lower two seal convexities are made by silicon sealant.
7. the droop safety check used of the laboratory ventilation system of easily removable and washable good airproof performance according to claim 1, it is characterized in that, be relatively set with a pair of fixed via on the sidewall of described valve body, the two ends of valve rod are adaptive being inserted in described two fixed vias respectively, realizes the valve rod dismounting so that described valve rod can move along its axis fixed via under one end applied thrust or pulling force effect.
8. the droop safety check used of the laboratory ventilation system of easily removable and washable good airproof performance according to claim 7, it is characterized in that, described fixed via corresponding inner orifice and outer aperture of forming respectively on the inwall of valve body and outer wall, have the gap between the both ends of the surface of described outer aperture and valve rod, be filled with the stuffing box packing for the sealing fixed via in this gap.
9. the droop safety check used of the laboratory ventilation system of easily removable and washable good airproof performance according to claim 1, is characterized in that, described valve body adopts PV C material to make.
10. the droop safety check used of the laboratory ventilation system of easily removable and washable good airproof performance according to claim 1, is characterized in that, the material of described valve rod is carbon steel or stainless steel.
11. the droop safety check that the laboratory ventilation system of easily removable and washable good airproof performance according to claim 2 uses is characterized in that the material of described fixed plate is carbon steel or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220549165 CN202937846U (en) | 2012-10-25 | 2012-10-25 | Easy-to-disassemble and good-air-tightness pendent check valve for laboratory ventilation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220549165 CN202937846U (en) | 2012-10-25 | 2012-10-25 | Easy-to-disassemble and good-air-tightness pendent check valve for laboratory ventilation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937846U true CN202937846U (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220549165 Expired - Fee Related CN202937846U (en) | 2012-10-25 | 2012-10-25 | Easy-to-disassemble and good-air-tightness pendent check valve for laboratory ventilation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937846U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546130A (en) * | 2016-02-26 | 2016-05-04 | 山东省水利科学研究院 | Automatic control valve, indoor negative pressure relief device and reservoir drainage tunnel management room |
-
2012
- 2012-10-25 CN CN 201220549165 patent/CN202937846U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546130A (en) * | 2016-02-26 | 2016-05-04 | 山东省水利科学研究院 | Automatic control valve, indoor negative pressure relief device and reservoir drainage tunnel management room |
| CN105546130B (en) * | 2016-02-26 | 2017-09-15 | 山东省水利科学研究院 | Indoor negative pressure alleviates device and Water reservoir water draining hole management house |
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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 |
Granted publication date: 20130515 Termination date: 20201025 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |