CN208764012U - Safety valve - Google Patents
Safety valve Download PDFInfo
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- CN208764012U CN208764012U CN201821428932.6U CN201821428932U CN208764012U CN 208764012 U CN208764012 U CN 208764012U CN 201821428932 U CN201821428932 U CN 201821428932U CN 208764012 U CN208764012 U CN 208764012U
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- float
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- mounting groove
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Abstract
The utility model provides a kind of safety valve, including fixed valve base, mobile spool and elastic compression body；Chamber is set in fixed valve base, is provided with mounting groove on chamber bottom, mounting groove bottom is provided with flow inlet, is provided with refluxing opening on mounting groove wall body；Mobile spool includes movable valve base and float, guide holder is provided on movable valve base, the lower part of guide holder is provided with seal, seal bottom is provided with the overflow ducts of perforation, float chamber is provided on overflow ducts, float is mounted in float chamber and is provided with gap between the side wall and float of float chamber；Guide holder is mounted in mounting groove；It is provided between refluxing opening in chamber and mounting groove and unloads circulation road；Elastic compression body includes spring and fastening body, and spring-compressed is resisted against on movable valve base by fastening body.The utility model can will enter the micro-air in plunger shaft during normal work and recycle discharge, provide powerful guarantee for the safety and normal operation of solution pump.
Description
Technical field
The utility model relates to safety relief apparatus field, especially a kind of safety valve.
Background technique
As shown in Figure 1, the piston 21 in solution pump 2 needs to move back and forth, by hydraulic oil in the use process of solution pump
In hydraulic oil force feed to diaphragm cavity 22 in chamber 222, but since, there are gas, gas has compressible in hydraulic fluid chamber 222
Property, so can compress this portion gas during piston 21 moves back and forth, the dischargeable capacity of hydraulic fluid chamber 222 is caused to be sent out
Changing will be unfavorable for solution pump in this way and accurately transport solution medium, and can generate biggish error.Existing safety valve structure
Complexity, and stream can only be unloaded when unloading flowing pressure what pressure reached setting, can not in time by reciprocating motion of the pistons when the gas brought into
Body discharge, it is therefore desirable to a kind of novel safety valve is provided, to meet the use demand of solution pump.
Utility model content
In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide a kind of safety valves, for solving
The problem of influencing solution pump normal use can not be discharged in the minimum gas that certainly reciprocating motion of the pistons is brought into the prior art in time.
In order to achieve the above objects and other related objects, the utility model provides a kind of safety valve, including fixed valve base, shifting
Movable valve plug and elastic compression body；The chamber that can install the mobile spool is provided in the fixed valve base, the chamber
It is provided with mounting groove on bottom wall, flow inlet is provided on the bottom wall of the mounting groove, is provided with back on the downside wall body of the mounting groove
Head piece；The mobile spool includes movable valve base and float, is provided on the movable valve base and matches with the mounting groove
Guide holder, the lower part of the guide holder are provided with seal, and the seal bottom is provided with penetrates through the entire movement upwards
The overflow ducts of valve seat are provided with float chamber on the overflow ducts, are arranged between the side wall of the float chamber and the float
Have air-flow can by gap, the float be mounted in the float chamber and can in the overflow ducts of lower part pressure effect
Under move up the overflow ducts mouth sealing blocking of the float chamber upper wall；The guide holder correspondence is mounted on the mounting groove
It is interior, and can move linearly up and down along the mounting groove and the seal is moved away from or is blocked on the flow inlet；The chamber
It is provided between the refluxing opening in the mounting groove and unloads circulation road；The elastic compression body includes spring and fastening body,
The fastening body is mounted on the top of the chamber, and the spring is mounted in the chamber, and the upper end of the spring, which compresses, to be supported
It leans against on the fastening body, the lower end of the spring, which compresses, is resisted against the movable valve base top.
Preferably, the overflow ducts mouth of the float chamber upper wall or lower wall is circle, and the float is valve ball, the overflow
The diameter of passway is respectively less than the diameter d of the valve ball.
Further, the diameter of the overflow ducts mouth of the float chamber upper wall or lower wall is 0.6~0.8d.
Further, the height of the float chamber is 1.6-1.8d.
Preferably, the refluxing opening is circle, and the sealing surface of the seal is spherical surface.
Preferably, the fastening body, which is connected through a screw thread, is mounted in the chamber, and the top setting of the fastening body
There is what can be connected with screwing tool to screw portion.
Preferably, the fixed valve base includes upper valve base and lower valve base, and the mounting groove is arranged on the lower valve base top,
The upper valve base, the lower part of the upper valve base are provided with lower valve base mounting hole, the lower valve base outer wall to the chamber up and down
Interference is mounted in the lower valve base mounting hole.
Preferably, the movable valve base further includes float seat, and the lower part of the float seat is arranged in the float chamber, described
The threaded connection of float seat is installed on the guide seat.
Further, the top of the float seat is equipped with the valve pocket made of corrosion-resistant elastic material, on the valve pocket
It is provided with the head piece that unloads being connected with the chamber, the outer wall interference fit of the valve pocket is inserted into the inner hole of the spring.
Preferably, the circulation road that unloads is the gap being arranged between the guide holder outer wall and the mounting groove.
As described above, the utility model safety valve, has the advantages that and pacifies the utility model safety valve when use
On the solution pump housing, and the flow inlet on fixed valve base is made to be connected with diaphragm chamber top, makes returning on safety valve
Head piece is connected with solution pump inner cavity, when the piston in solution pump is towards trace gas when moving in plunger shaft, brought by piston
Body enters the top in diaphragm cavity and being eventually collected in diaphragm cavity, as piston further moves, gas along flow inlet to
On enter in overflow ducts, and float is pushed to move up, to float after the overflow ducts mouth on float chamber lower wall is opened
The indoor gas of diaphragm and a part of solution are in the gap between float and float chamber side wall upwards and from floating during son moves up
It is spilled over in overflow ducts on the upside of seed cell in the chamber on movable valve base top, and flow in mounting groove eventually by circulation road is unloaded
Refluxing opening at, then from refluxing opening solution pump inner cavity is flow back into, to complete a circulation.When system pressure is greater than the set value
When, float blocks on the overflow ducts mouth on float chamber top, and mobile spool stress makes spring-compressed to make guide holder drive
Seal moves up, and such flow inlet is directly connected to refluxing opening and unloads stream.The utility model, which can both play, is reaching setting pressure
When unload the effect of stream, and can will enter the discharge of the micro-air in plunger shaft in time during normal work, discharge in time
Gas in pump, ensure that the stability of system pressure, provides powerful guarantee for the safety and normal operation of solution pump.
Detailed description of the invention
Fig. 1 is the overall structure figure of the utility model embodiment；
Fig. 2 is the structure chart of mobile spool in the utility model embodiment；
Fig. 3 is installation site figure of the utility model safety valve in solution pump.
In figure: 1, safety valve 2, solution pump
11, fixed valve base 12, mobile spool
13, elastic compression body 111, upper valve base
112, lower valve base 1121, flow inlet
1122, refluxing opening 1123, mounting groove
121, valve pocket 122, movable valve base
123, float 124, overflow ducts
1221, float seat 1222, guide holder
1223, seal 12211, float chamber
131, fastening body 132, spring
21, piston 22, diaphragm cavity
222, hydraulic fluid chamber 23, the solution pump housing
231, solution pump chamber 1111, chamber
Specific embodiment
Structure depicted in Figure of description, ratio, size etc., only to cooperate the revealed content of specification, with
Understand for those skilled in the art and read, is not intended to limit the utility model enforceable qualifications, therefore does not have skill
Essential meaning in art, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the utility model institute
Under the effect of capable of generating and the purpose that can reach, it should all still fall in what the revealed technology contents of the utility model can be covered
In range.Meanwhile cited such as "upper", "lower", "front", "rear", " centre " term in this specification, it is merely convenient to chat
That states is illustrated, rather than to limit the enforceable range of the utility model, relativeness is altered or modified, without substantive change
Under more technology contents, when being also considered as the enforceable scope of the utility model.
As shown in Figure 1-3, the utility model provides a kind of safety valve 1, including fixed valve base 11, mobile spool 12 and elasticity
Fastening body 13113；It is provided with the chamber 1111 that can install mobile spool 12 in fixed valve base 11, is set on the bottom wall of chamber 1111
It is equipped with mounting groove 1123, flow inlet 1121 is provided on the bottom wall of mounting groove 1123, is provided with back on the downside wall body of mounting groove 1123
Head piece 1122；Mobile spool 12 includes movable valve base 122 and float 123, is provided with and 1123 phase of mounting groove on movable valve base 122
Matched guide holder 1222, the lower part of guide holder 1222 are provided with seal 1223, and 1223 bottom of seal is provided with to be passed through upwards
Lead to the overflow ducts 124 of entire movable valve base 122, float chamber 12211, the side of float chamber 12211 are provided on overflow ducts 124
Be provided between wall and float 123 air-flow can by gap, float 123 is mounted in float chamber 12211 and can be in lower part
It is moved up under the action of pressure in overflow ducts 124 by the overflow ducts mouth sealing blocking of 12211 upper wall of float chamber；Guide holder
1222 correspondences are mounted in mounting groove 1123, and can move linearly along about 1123 mounting groove and seal 1223 is moved away from or is blocked
On flow inlet 1121；It is provided between refluxing opening 1122 in chamber 1111 and mounting groove 1123 and unloads circulation road；Elastic compression
Body 13113 includes spring 132 and fastening body 131, and fastening body 131 is mounted on the top of chamber 1111, and spring 132 is mounted on chamber
In 1111, the upper end of spring 132, which compresses, to be resisted against on fastening body 131, and the lower end of spring 132, which compresses, is resisted against movable valve base 122
Top.
The utility model safety valve 1 is mounted on the solution pump housing 23 when use, and makes the flow inlet on fixed valve base 11
1121 are connected with 22 top of diaphragm cavity, so that the refluxing opening 1122 on safety valve 1 is connected with 2 inner cavity of solution pump, when solution pump 2
When interior piston 21 is intracavitary mobile towards piston 21, entered in hydraulic fluid chamber 222 by the minimum gas that piston 21 is brought into, and final
It is gathered in the top of diaphragm cavity 22, as piston 21 is further mobile, gas is upwardly into along flow inlet 1121 to overflow
In channel 124, and float 123 is pushed to move up, thus after 124 mouthfuls of overflow ducts on 12211 lower wall of float chamber are opened,
The indoor gas of diaphragm and a part of solution are from the gap between 12211 side wall of float 123 and float chamber during float 123 moves up
It is interior to be spilled over in the chamber 1111 on 122 top of movable valve base upwards and out of 12211 upside of float chamber overflow ducts 124, and
It is flow back into solution pump 2 eventually by unloading at the refluxing opening 1122 that circulation road is flow in mounting groove 1123, then from refluxing opening 1122
Chamber, to complete a circulation.When system pressure is greater than the set value, float 123 blocks the overflow on 12211 top of float chamber
On 124 mouthfuls of channel, mobile 12 stress of spool makes the compression of spring 132 to make guide holder 1222 that seal 1223 be driven to move up, this
Sample flow inlet 1121 is directly connected to refluxing opening 1122 and unloads stream.The utility model, which can both have been played, unloads stream when reaching setting pressure
Effect, and can will enter the intracavitary micro-air of piston 21 during normal work and recycle discharge, release pump in time
Interior gas ensure that the stability of system pressure, provide powerful guarantee for the safety and normal operation of solution pump 2.
The shape of float 123 and overflow ducts 124 is not limited in the utility model, as long as being able to achieve on float 123
It moves and under pressure by 124 mouthfuls of sealing blockings of overflow ducts on 12211 upper wall of float chamber, but in view of sphere pair
The sealing of circular hole has the function of automatic centering, and cost is relatively low, so 12211 upper wall of float chamber or lower wall in the present embodiment
124 mouthfuls of overflow ducts are circle, and float 123 is valve ball, as long as 124 mouthfuls of overflow ducts of diameter is less than the straight of valve ball in principle
Sealing blocking can be realized in diameter d, but in order to obtain better seal effect, 12211 upper wall of float chamber or lower wall in the present embodiment
124 mouthfuls of overflow ducts of diameter be 0.5-0.7d.
In order to so that piston 21 is brought into gas during float 123 moves up from 12211 top of float chamber overflow
Drained as early as possible in circulation road 124, the height of float chamber 12211 is 1.6-1.8d in the present embodiment, this height both can guarantee gas
Body is drained, and not will cause the waste of energy.
The structure of refluxing opening 1122 and seal 1223 in the utility model is not limited, as long as realization can be cooperated
Sealing, but examining refluxing opening 1122 in the present embodiment is circle, and the sealing surface of seal 1223 is spherical surface, such sealing performance
It can be more superior.In view of the seal 1223 in convenience the present embodiment of processing is sphere, the lower part of guide holder 1222 is set
It is equipped with cylinder groove, 1223 top of seal is provided with plane, and 1223 interference of seal is mounted in cylinder groove, and upper plane is supported
It leans against on the upper wall of cylinder groove.
Fastening body 131, which is connected through a screw thread, in the present embodiment is mounted in chamber 1111, and the top setting of fastening body 131
There is what can be connected with screwing tool to screw portion.
In view of the major diameter of fixed valve base 11 and movable valve base 122 is bigger, machine adds difficulty, fixed valve base in the present embodiment
11 include upper valve base 111 and lower valve base 112, and the setting of mounting groove 1123 is on 112 top of lower valve base, the upper valve up and down of chamber 1111
Seat 111, the lower part of upper valve base 111 are provided with 112 mounting hole of lower valve base, and 112 outer wall interference of lower valve base is mounted on the peace of lower valve base 112
It fills in hole.Movable valve base 122 further includes float seat 1221, and the lower part of float seat 1221, float seat is arranged in float chamber 12211
1221 threaded connections are mounted on guide holder 1222.
For the ease of dismantling, in the present embodiment, the top of float seat 1221 is equipped with the valve pocket made of nitrile rubber
121, the head piece that unloads being connected with chamber 1111 is provided on valve pocket 121, the outer wall interference fit of valve pocket 121 is inserted into spring
In 132 inner hole.In this way after fastening body 131 removes, spool 12 can entirely will be moved by spring 132 and taken out, it is convenient fast
It is prompt.
It to be diversified forms that circulation road is unloaded in the utility model, as long as being able to achieve the company between chamber 1111 and return port
It is logical that the liquid overflowed in chamber 1111 is flowed back into solution pump chamber Room 231, but mounting groove in the present embodiment by return port
1123 be cylindrical groove, and guide holder 1222 is cylindrical body, is machined with plane on the cylindrical surface of cylindrical body, unloads circulation road and exists for setting
Gap between plane and mounting groove 1123.
In conclusion the utility model structure is simple, can not only play the role of unloading stream, but also energy when reaching setting pressure
The micro-air in plunger shaft will be entered during normal work and recycle discharge, the gas in pump is released in time, guarantee
The stability of system pressure, for the safety and normal operation of solution pump provides powerful guarantee.So the utility model is effective
Some practical problems in the prior art are overcome to have very high utility value and use meaning.
Above embodiment is only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.The utility model can be improved there are many more aspect under the premise of without prejudice to overall thought, for being familiar with this technology
Personage can all be carried out modifications and changes to above-described embodiment under the spirit and scope without prejudice to the utility model.Therefore,
Such as those of ordinary skill in the art is in spirit revealed without departing from the utility model and institute under technical idea
All equivalent modifications or change completed, should be covered by the claim of the utility model.
Claims (10)
1. a kind of safety valve, which is characterized in that including fixed valve base, mobile spool and elastic compression body；In the fixed valve base
It is provided with the chamber that can install the mobile spool, mounting groove, the bottom of the mounting groove are provided on the bottom wall of the chamber
It is provided with flow inlet on wall, is provided with refluxing opening on the downside wall body of the mounting groove；The mobile spool includes movable valve base and floats
Son is provided with the guide holder to match with the mounting groove on the movable valve base, and the lower part of the guide holder is provided with sealing
Body, the seal bottom are provided with the overflow ducts for penetrating through the entire movable valve base upwards, are arranged on the overflow ducts
Have float chamber, be provided between the side wall of the float chamber and the float air-flow can by gap, float installation
It can be moved up the overflow of the float chamber upper wall in the float chamber and under the action of pressure in the overflow ducts of lower part
Passway sealing blocking；The guide holder correspondence is mounted in the mounting groove, and can be moved linearly up and down along the mounting groove
The seal is moved away from or is blocked on the flow inlet；It is set between the refluxing opening in the chamber and the mounting groove
It is equipped with and unloads circulation road；The elastic compression body includes spring and fastening body, and the fastening body is mounted on the top of the chamber, institute
It states spring to be mounted in the chamber, the upper end of the spring, which compresses, to be resisted against on the fastening body, the lower side pressure of the spring
Tight against leaning against the movable valve base top.
2. safety valve according to claim 1, which is characterized in that the overflow ducts mouth of the float chamber upper wall or lower wall is
Circle, the float are valve ball, and the diameter of the overflow ducts mouth is respectively less than the diameter d of the valve ball.
3. safety valve according to claim 2, which is characterized in that the overflow ducts mouth of the float chamber upper wall or lower wall
Diameter is 0.5-0.7d.
4. safety valve according to claim 2, which is characterized in that the height of the float chamber is 1.6-1.8d.
5. safety valve according to claim 1, which is characterized in that the refluxing opening is circle, the sealing of the seal
Face is spherical surface.
6. safety valve according to claim 1, which is characterized in that the fastening body, which is connected through a screw thread, is mounted on the chamber
Interior, and the top of the fastening body be provided with can be connected with screwing tool screw portion.
7. safety valve according to claim 1, which is characterized in that the fixed valve base includes upper valve base and lower valve base, institute
Mounting groove setting is stated on the lower valve base top, the upper valve base, the lower part of the upper valve base are arranged the chamber up and down
There is lower valve base mounting hole, the lower valve base outer wall interference is mounted in the lower valve base mounting hole.
8. safety valve according to claim 1, which is characterized in that the movable valve base further includes float seat, the float
The lower part of the float seat is arranged in room, and the float seat threaded connection is installed on the guide seat.
9. safety valve according to claim 8, which is characterized in that the top of the float seat is equipped with by corrosion-resistant elasticity
Valve pocket made of material is provided with the head piece that unloads being connected with the chamber on the valve pocket, and the outer wall interference of the valve pocket is matched
Conjunction is inserted into the inner hole of the spring.
10. safety valve according to claim 1, which is characterized in that described to unload circulation road to be arranged outside the guide holder
Gap between wall and the mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821428932.6U CN208764012U (en) | 2018-08-31 | 2018-08-31 | Safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821428932.6U CN208764012U (en) | 2018-08-31 | 2018-08-31 | Safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208764012U true CN208764012U (en) | 2019-04-19 |
Family
ID=66134038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821428932.6U Active CN208764012U (en) | 2018-08-31 | 2018-08-31 | Safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208764012U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425315A (en) * | 2019-07-18 | 2019-11-08 | 常州嵘驰发动机技术有限公司 | A kind of pedestal and its fluid pump of application |
| CN112503203A (en) * | 2019-09-16 | 2021-03-16 | 浙江三花制冷集团有限公司 | Control valve |
| CN112628442A (en) * | 2020-11-18 | 2021-04-09 | 俞聪妹 | Container valve |
| TWI730827B (en) * | 2020-06-24 | 2021-06-11 | 左天喬 | Pilot pressure relief valve |
-
2018
- 2018-08-31 CN CN201821428932.6U patent/CN208764012U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425315A (en) * | 2019-07-18 | 2019-11-08 | 常州嵘驰发动机技术有限公司 | A kind of pedestal and its fluid pump of application |
| CN112503203A (en) * | 2019-09-16 | 2021-03-16 | 浙江三花制冷集团有限公司 | Control valve |
| CN112503203B (en) * | 2019-09-16 | 2024-04-26 | 浙江三花商用制冷有限公司 | Control valve |
| TWI730827B (en) * | 2020-06-24 | 2021-06-11 | 左天喬 | Pilot pressure relief valve |
| CN112628442A (en) * | 2020-11-18 | 2021-04-09 | 俞聪妹 | Container valve |
| CN112628442B (en) * | 2020-11-18 | 2022-10-28 | 宁津美华工业有限公司 | Container valve |
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