CN104329240A - High pressure-resistant and high vacuum-kept inflation/exhaust valve for linear compressor and manufacturing method - Google Patents
High pressure-resistant and high vacuum-kept inflation/exhaust valve for linear compressor and manufacturing method Download PDFInfo
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- CN104329240A CN104329240A CN201410546866.2A CN201410546866A CN104329240A CN 104329240 A CN104329240 A CN 104329240A CN 201410546866 A CN201410546866 A CN 201410546866A CN 104329240 A CN104329240 A CN 104329240A
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Abstract
The invention discloses a high pressure-resistant and high vacuum-kept inflation/exhaust valve for a linear compressor and a manufacturing method. The inflation/exhaust valve consists of a handle, a valve rod, a sealing nut, a sealing washer, a sealing ring, valve body sealing rings, a valve body, a holding-down nut, a valve seat, a valve element and a connecting pipe joint. The inflation/exhaust valve can be conveniently connected with the linear compressor and an inflation/exhaust system, and meanwhile, effective sealing can be realized on the valve when vacuum degree reaches as low as (1*10-7)-(1*10-8)Pa or system pressure reaches as high as 4.0-5.0MPa; moreover, the valve still has enough safety when the system pressure is 5.0MPa, and therefore the steep demands of safety, high air tightness and no pollution of a long-life pulse tube cryocooler and Stirling cryocooler of the linear compressor during working medium filling and system exhaust are met.
Description
Technical field
The present invention relates to a kind of Air inflating and exhausting valve door, particularly a kind of linear compressor is with high pressure resistant and protect the Air inflating and exhausting valve door of high vacuum and manufacture method.
Background technique
Linear compressor is a kind of reciprocating-piston compressor with innovation meaning, it utilizes linear electric motor driven plunger to do reciprocating linear motion in the cylinder, completely eliminate the radial forces to piston in theory, thus the mechanical wear between piston and cylinder wall and consequent idle work is also eliminated, operating life and energy conversion efficiency all increase substantially, so in the needs long lifetime, the aviation of highly reliable and efficiency operation, space flight, the military special dimension that waits has very important application, such as, two kinds of regenerating type low-temperature refrigerators---pulse tube refrigerating machine and the sterlin refrigerator of important application is had in space flight and military field, if realize long-lived operation, all need to adopt linear compressor as its power source.
The pulse tube refrigerating machine adopting linear compressor to drive and sterlin refrigerator, for ensureing effective long-lived operation, its working medium generally all adopts the helium of high cleanliness (sometimes even needing purity to be more than 99.9999%).High-pure helium expensive, but this factor that to be only in application one comparatively secondary, because the acquisition of high-pure helium has had well industry and commercial channel.In actual applications, ensureing one of problem that in above-mentioned refrigerator, working medium high cleanliness is the most key, is how to make the working medium be filled with in refrigerator system still keep original degree of purity in fact.In other words, the pollution in working medium filling process namely how is effectively prevented.If polluted in working medium filling process, the helium pure again that early stage obtains is also by all that has been achieved is spoiled.
The working medium of pulse tube refrigerating machine and sterlin refrigerator fills and is generally all filled with from linear compressor.Before working medium is filled with, the method pump drainage that the air in refrigerator system and other foreign gas must be passed through vacuum pump negative pressure exhaust is clean, for realizing the effective pump drainage being adsorbed on the foreign gas of refrigerating device inner, required negative pressure value is very high, and special circumstances even need to be low to moderate 1 × 10
-7below Pa; Then high pure refrigerant is filled with, when internal system reaches scheduled pressure value, sealed by linear compressor, the systematic working medium pressure needed for the philip refrigerator of high-frequency work is very high, and the system pressure needed for pulse tube refrigerating machine is sometimes even up to more than 4.0MPa.
From above-mentioned background knowledge, pulse tube refrigerating machine and sterlin refrigerator carry out working medium fill time, need a set of valve system, its can and inflating and exhausting system and linear compressor cooperation, before working medium fills, linear compressor and this valve system are tightly connected, inflating and exhausting system by this valve system by the air of refrigerator system inside and foreign gas pump drainage clean; After this, high pure refrigerant is filled with refrigerator system inside by this valve system by inflating and exhausting system; After working medium fills, linear compressor disconnects with this valve system after realizing the sealing of self.In the whole process that refrigerator system exhaust and working medium fill, this valve system will ensure not occur to leak and pollute working medium by self.
From above-mentioned discussion, for linear compressor drive refrigerator in system exhaust and working medium filling process, the valve system used should at least meet following condition:
1) it needs to be connected easily with linear compressor, and connecting port needs to realize sealing reliably;
2) it needs to be connected easily with inflating and exhausting system, and connecting port needs to realize sealing reliably;
3) it self will be low to moderate 1 × 10
-7~ 1 × 10
-8still effective sealing can be ensured during the degree of vacuum of Pa;
4) it self still will can ensure effective sealing when the system pressure of height to 4.0 ~ 5.0MPa;
5) it will still have enough Securities when the system pressure of 5.0MPa.
Should say, in above-mentioned requirements, the first two condition is comparatively easy to solve, and then three require valve system is very harsh.Common industrial valve or the industrial valve through reequiping all cannot meet above-mentioned basic demand, must carry out particular design for practical application.Regrettably, because long lifetime linear compressor developing history is at home shorter, the valve system realizing above-mentioned functions is also rare, makeshift during AEROSPACE APPLICATION is usually by expensive special customized (or even import), but its versatility is not strong, brings extra cost to raise up; Be usually reequiped by industrial valve during Ground Application, but the Working medium pollution brought during using process is usually one of key factor making linear compressor and pulse tube refrigerating machine and sterlin refrigerator penalty.
Summary of the invention
In view of the deficiencies in the prior art, the present invention proposes a kind of linear compressor with high pressure resistant and protect the Air inflating and exhausting valve door of high vacuum and manufacture method.
The object of the invention is to, the Air inflating and exhausting valve door proposed by the present invention, can be connected with linear compressor and inflating and exhausting system easily, valve self can realize being low to moderate 1 × 10 simultaneously
-7~ 1 × 10
-8the effective sealing during system pressure of the degree of vacuum of Pa or height to 4.0 ~ 5.0MPa, and can still have enough Securities when the system pressure of 5.0MPa, thus meet linear compressor drive long lifetime pulse tube refrigerating machine and sterlin refrigerator fill and the Security in system exhaust process, high-air-tightness and free of contamination rigors in working medium.
The linear compressor invented Air inflating and exhausting valve door that is high pressure resistant and guarantor's high vacuum comprises handle 1, valve rod 2, sealing nut 3, seal washer 4, seal ring 5, valve seals 6, valve body 7, clamping nut 8, valve seat 9, spool 10, valve seat insert 30, valve core seal ring 31 and hose coupler 11, it is characterized in that, the inside of handle 1 processes square opening 29 in handle, and outside is made into three claw types so that rotation process; Valve rod 2 is processed into elongated shaft-like, the meticulous polishing of valve rod periphery 27 of its outside makes Glabrous sting, process valve rod in the intermediate portion of valve rod 2 and protrude step 26, valve rod protrudes the diameter of external diameter slightly larger than valve rod 2 of step 26, one end of valve rod 2 is made into valve rod flat head 25, and the other end is made into the valve rod square spigot 28 for inserting handle 1; Valve body 7 is hollow column, and its inside, upper end is processed with smooth valve seal groove 12, and side is processed with the valve body side face port 13 that can load hose coupler 11, and hollow space is processed with step surface 14 in valve body, and lower end is processed with press seal face 15; The upper end of valve seat 9 is processed with valve base sealing groove 19, valve seat insert 30 is placed on valve base sealing groove 19, the strength extruding valve seat insert 30 on press seal face 15 is delivered to by clamping nut 8, realize being tightly connected between valve body 7 and valve seat 9, the inside middle of valve seat 9 processes valve seat conical surface 16, the T-shaped gas guide groove 18 for conducting gas is processed under valve seat conical surface 16, the inside of valve seat 9 is processed with valve seat internal thread 17 bottom, and valve seat 9 to be fixed on linear compressor by valve seat flanged surface 20 and to seal; The upper end of spool 10 is round end, and round end processes spool groove 21, processes semicircular core sealing groove 22 below round end, and the lower end external process of spool 10 goes out spool outside thread 24, and inside processes spool gas port 23; In the valve seal groove 12 of valve body 7 upper end, interval loads valve seals 6, seal ring 5 and seal washer 4, centre inserts valve rod 2 again, tighten sealing nut 3, seal washer 4 just compresses valve seals 6, fills all gaps of the valve seal groove 12 of valve body 7 upper end after valve seals 6 expands; Smooth valve rod periphery 27 should make valve rod 2 rotate and to move up and down and not affect sealing effect; In valve body, the internal diameter of step surface 14 is less than the external diameter that valve rod gives prominence to step 26, thus valve rod 2 cannot be passed from the inner chamber lower end of valve body 7; In core sealing groove 22, valve core seal ring 31 is installed, then entirety is screwed into valve seat internal thread 17, when spool 10 is not tightened completely, valve seat about 9 two ends are communicated with spool gas port 23 by T-shaped gas guide groove 18, when spool 10 relies on after the spool outside thread 24 of lower end tightens completely, valve core seal ring 30 fills up the space of core sealing groove 22 and valve seat conical surface 16 formation completely after expanding, block the conducting up and down of valve seat 9; Together, the other end and the inflating and exhausting system of hose coupler 11 are tightly connected the interior also seal welding of one end insertion valve body side face port 13 of hose coupler 11; Fill in the process of exhaust at linear compressor, valve seat 9 is sealed connected together with valve body 7 by clamping nut 8 and valve seals 6, and valve rod flat head 25 contacts with spool groove 21, controls the position of spool 10; Fill after exhaust completes at linear compressor, by handle 1 rotary valve rod 2, band movable valve plug 10 rotates, the valve core seal ring 31 of spool 10 moves down, and is finally pressed on completely on valve seat conical surface 16, completes seal operation, then valve rod 2 and spool 10 is allowed to depart from, unclamp clamping nut 8 again, whole inflating and exhausting system is separated with linear compressor, only valve seat 9 and spool 10 are stayed on linear compressor; Thus a kind of linear compressor of common formation Air inflating and exhausting valve door that is high pressure resistant and guarantor's high vacuum.
Below in conjunction with accompanying drawing, invented linear compressor manufacture method that is high pressure resistant and the Air inflating and exhausting valve door of guarantor's high vacuum is described below:
Fig. 2, Fig. 3 and Fig. 4 are respectively the sectional drawing of valve body 7, valve seat 9 and spool 10, and Fig. 5 is the 3-D view of valve rod 2; Valve body 7, valve seat 9, spool 10 and valve rod 2 all adopt the metal bar material overall processing of high mechanical properties to form, and first process elementary contour by numerical control machine tool, re-use lathe with high precision finishing shaping;
The press seal face 15 of valve body 7 and the surface of valve seal groove 12 all adopt high precision grinder to grind, and ensure that its degree of finish is all better than 2.0 μm, and to guarantee its sealability, valve body outside thread 32 is processed with the screw-internal thread fit of sealing nut 3;
The valve seat conical surface 16 of valve seat 9 adopts precision machine tool to repair, ensure that its angle is between 50 ° ~ 70 °, then high-precision honing machine is adopted to grind, guarantee that its degree of finish is better than 2.0 μm, T-shaped gas guide groove 18 adopts precision machine tool to ensure, and its tolerance of size is better than 3.0 μm, valve seat outside thread 33 is processed with the screw-internal thread fit of clamping nut 8, and valve seat internal thread 17 coordinates with spool outside thread 24 to be processed;
The core sealing groove 22 of spool 10 adopts precision machine tool to repair and adopts high-precision lapping machine to grind, and ensures that its degree of finish is better than 1.0 μm, and spool gas port adopts precision machine tool to ensure that its tolerance of size is better than 2.0 μm;
The valve rod periphery 27 of valve rod 2 is owing to contacting with the dynamic sealing assembly in valve body 7 upper end, thus one of this valve mechanism core important document needing special concern in course of working is become, it is after use precision machine tool carefulness finishing, its tolerance of size need be made to be better than 1.0 μm and vertically beat not higher than 2.0 μm, after this re-use the meticulous polishing of external cylindrical grinding machine, make its degree of finish be better than 0.5 μm to guarantee to ensure good motive sealing performance;
Sealing nut 3 and clamping nut 8 all adopt the metallic material overall processing of high mechanical properties shaping, and wherein the internal thread of sealing nut 3 coordinates with valve body outside thread 32 and processes, and the internal thread of clamping nut 8 coordinates with valve seat outside thread 33 to be processed;
Seal washer 4 and seal ring 5 form by the metallic material overall processing of high mechanical properties, their upper and lower surface all adopts precision lathe to repair and uses precision grinder to grind and makes flatness all be better than 1.0 μm, and the parallelism of respective upper and lower surface is also better than 1.0 μm;
The material of valve seals 6, valve seat insert 30 and valve core seal ring 31 can select the nonmetallic material of high-quality, also the metallic material that ductility is good can be selected, wherein the internal-and external diameter of valve seals 6 coordinates with valve rod periphery 27 and valve seal groove 12 respectively and processes, valve seat insert 30 coordinates with press seal face 15 to be processed, and valve core seal ring 31 coordinates with core sealing groove 22 to be processed;
One end of hose coupler 11 to insert in valve body side face port 13 and the mode seal welding using laser bonding together, the other end and the inflating and exhausting system of hose coupler 11 are tightly connected;
After above-mentioned operation all completes, each parts are assembled according to shown in Fig. 1, namely form linear compressor Air inflating and exhausting valve door that is high pressure resistant and guarantor's high vacuum.
Advantage of the present invention is as follows:
1) technology of motive sealing is adopted to come the upper end of sealed valve stem and valve body, valve rod is made to rotate and keep high-air-tightness while moving up and down, the sealing configuration that Double seal ring centre seal ring separates, after seal washer compresses, sealability is more reliable.
2) Air inflating and exhausting valve door adopts segmental structure, upper half part is vented platform and is connected with filling, lower half portion is arranged on linear compressor, such layout simplifies the structure of filling exhaust port on linear compressor, and allow and carry out the opening and closing operations of valve in inflating and exhausting system outside and do not affect and be sealed to possibility, ensure that the continuity and sealing of filling each operating procedure in exhaust process;
3) by the spool of design special construction, four kinds of structural elements are comprised the linkage interface with valve rod, the semi-circle seal groove that seals is carried out with conical surface, T-shaped air guide channel, the outside thread be connected and fixed with valve seat is integrated into one, achieve a kind of Air inflating and exhausting valve door most critical for linear compressor of example of the present invention, most crucial function, namely utilize valve rod to the upper-lower position of the regulating and controlling core sealing groove of spool, seal groove is relative to the determining positions opening and closing of valve seat of conical surface, the gas guide groove of valve seat is connected with lower end outlet by T-shaped air guide channel, the outside thread of spool plays spool upper-lower position location and fixing effect, it is critical component in whole Air inflating and exhausting valve door that these four functional imperative determine spool,
4) the Air inflating and exhausting valve door invented is terse, mainly utilize laser bonding and be threaded integrally, after Long-Time Service, take sealing nut apart to take out dynamic sealing assembly, exit valve rod from lower end and from after valve seat takes out spool, just can carry out updating maintenance to all Sealings, extend the working life of package unit;
6) apparatus of the present invention have paid special attention to the problem operating the Security in using process in structure outline, and first valve body overall processing forms, and intensity is high, and use laser welding process with welding of hose coupler, thermal distortion is little, and weld seam is solid and reliable; Secondly in the structural design of valve rod, the outstanding step of diameter slightly larger than valve rod cylindrical is added especially, effect is that restriction valve rod is in the position of the outside movement of valve inner, when this contrive equipment is under inside is filled with the situation of pressurized gas, can cause the outside high strength extruding of valve rod, play the outstanding step of gear effect, can effectively prevent valve rod from being squeezed out to wound by pressurized gas and fill bleeding personnel.
The Air inflating and exhausting valve door proposed by the present invention, can be connected with linear compressor and inflating and exhausting system easily, and valve self can realize being low to moderate 1 × 10 simultaneously
-7~ 1 × 10
-8the effective sealing during system pressure of the degree of vacuum of Pa or height to 4.0 ~ 5.0MPa, and can still have enough Securities when the system pressure of 5.0MPa, thus meet linear compressor drive long lifetime pulse tube refrigerating machine and sterlin refrigerator fill and the Security in system exhaust process, high-air-tightness and free of contamination rigors in working medium.
Accompanying drawing explanation
Fig. 1 is invented linear compressor overall sectional view that is high pressure resistant and the Air inflating and exhausting valve door of guarantor's high vacuum;
Fig. 2 is the sectional drawing of valve body 7;
Fig. 3 is the sectional drawing of valve seat 9;
Fig. 4 is the sectional drawing of spool 10;
Fig. 5 is the 3-D view of valve rod 2;
Fig. 6 is the 3-D view of handle 1;
Fig. 7 is invented linear compressor three-dimensional structure schematic diagram that is high pressure resistant and the Air inflating and exhausting valve door of guarantor's high vacuum.
Wherein: 1 is handle; 2 is valve rod; 3 is sealing nut; 4 is seal washer; 5 is seal ring; 6 is valve seals; 7 is valve body; 8 is clamping nut; 9 is valve seat; 10 is spool; 11 is hose coupler; 12 is valve seal groove; 13 is valve body side face port; 14 is step surface in valve body; 15 is press seal face; 16 is valve seat conical surface; 17 is valve seat internal thread; 18 is T-shaped gas guide groove; 19 is valve base sealing groove; 20 is valve seat flanged surface; 21 is spool groove; 22 is core sealing groove; 23 is spool gas port; 24 is spool outside thread; 25 is valve rod flat head; 26 give prominence to step for valve rod; 27 is valve rod periphery; 28 is valve rod square spigot; 29 is square opening in handle; 30 is valve seat insert; 31 is valve core seal ring; 32 is valve body outside thread; 33 is valve seat outside thread.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail:
The linear compressor invented with high pressure resistant and protect high vacuum Air inflating and exhausting valve door overall sectional view as shown in Figure 1, it is made up of handle 1, valve rod 2, sealing nut 3, seal washer 4, seal ring 5, valve seals 6, valve body 7, clamping nut 8, valve seat 9, spool 10, valve seat insert 30, valve core seal ring 31 and hose coupler 11, it is characterized in that, the inside of handle 1 processes square opening 29 in handle, and outside is made into three claw types so that rotation process; Valve rod 2 is processed into elongated shaft-like, the meticulous polishing of valve rod periphery 27 of its outside makes Glabrous sting, process valve rod in the intermediate portion of valve rod 2 and protrude step 26, valve rod protrudes the diameter of external diameter slightly larger than valve rod 2 of step 26, one end of valve rod 2 is made into valve rod flat head 25, and the other end is made into the valve rod square spigot 28 for inserting handle 1; Valve body 7 is hollow column, and its inside, upper end is processed with smooth valve seal groove 12, and side is processed with the valve body side face port 13 that can load hose coupler 11, and hollow space is processed with step surface 14 in valve body, and lower end is processed with press seal face 15; The upper end of valve seat 9 is processed with valve base sealing groove 19, valve seat insert 30 is placed on valve base sealing groove 19, the strength extruding valve seat insert 30 on press seal face 15 is delivered to by clamping nut 8, realize being tightly connected between valve body 7 and valve seat 9, the inside middle of valve seat 9 processes valve seat conical surface 16, the T-shaped gas guide groove 18 for conducting gas is processed under valve seat conical surface 16, the inside of valve seat 9 is processed with valve seat internal thread 17 bottom, and valve seat 9 to be fixed on linear compressor by valve seat flanged surface 20 and to seal; The upper end of spool 10 is round end, and round end processes spool groove 21, processes semicircular core sealing groove 22 below round end, and the lower end external process of spool 10 goes out spool outside thread 24, and inside processes spool gas port 23; In the valve seal groove 12 of valve body 7 upper end, interval loads valve seals 6, seal ring 5 and seal washer 4, centre inserts valve rod 2 again, tighten sealing nut 3, seal washer 4 just compresses valve seals 6, fills all gaps of the valve seal groove 12 of valve body 7 upper end after valve seals 6 expands; Smooth valve rod periphery 27 should make valve rod 2 rotate and to move up and down and not affect sealing effect; In valve body, the internal diameter of step surface 14 is less than the external diameter that valve rod gives prominence to step 26, thus valve rod 2 cannot be passed from the inner chamber lower end of valve body 7; In core sealing groove 22, valve core seal ring 31 is installed, then entirety is screwed into valve seat internal thread 17, when spool 10 is not tightened completely, valve seat about 9 two ends are communicated with spool gas port 23 by T-shaped gas guide groove 18, when spool 10 relies on after the spool outside thread 24 of lower end tightens completely, valve core seal ring 30 fills up the space of core sealing groove 22 and valve seat conical surface 16 formation completely after expanding, block the conducting up and down of valve seat 9; Together, the other end and the inflating and exhausting system of hose coupler 11 are tightly connected the interior also seal welding of one end insertion valve body side face port 13 of hose coupler 11; Fill in the process of exhaust at linear compressor, valve seat 9 is sealed connected together with valve body 7 by clamping nut 8 and valve seals 6, and valve rod flat head 25 contacts with spool groove 21, controls the position of spool 10; Fill after exhaust completes at linear compressor, by handle 1 rotary valve rod 2, band movable valve plug 10 rotates, the valve core seal ring 31 of spool 10 moves down, and is finally pressed on completely on valve seat conical surface 16, completes seal operation, then valve rod 2 and spool 10 is allowed to depart from, unclamp clamping nut 8 again, whole inflating and exhausting system is separated with linear compressor, only valve seat 9 and spool 10 are stayed on linear compressor; Thus a kind of linear compressor of common formation Air inflating and exhausting valve door that is high pressure resistant and guarantor's high vacuum.
Below in conjunction with accompanying drawing, invented linear compressor manufacture method that is high pressure resistant and the Air inflating and exhausting valve door of guarantor's high vacuum is described below:
Fig. 2, Fig. 3 and Fig. 4 are respectively the sectional drawing of valve body 7, valve seat 9 and spool 10, and Fig. 5 is the 3-D view of valve rod 2; Valve body 7, valve seat 9, spool 10 and valve rod 2 all adopt the metal bar material overall processing of high mechanical properties to form, and first process elementary contour by numerical control machine tool, re-use lathe with high precision finishing touch shaping;
The press seal face 15 of valve body 7 and the surface of valve seal groove 12 all adopt high precision grinder to grind, and ensure that its degree of finish is 1.5 μm, and to guarantee its sealability, valve body outside thread 32 is processed with the screw-internal thread fit of sealing nut 3;
The valve seat conical surface 16 of valve seat 9 adopts precision machine tool to repair, ensure that its angle is 60 °, then high-precision honing machine is adopted to grind, guarantee that its degree of finish is 1.5 μm, T-shaped gas guide groove 18 adopts precision machine tool to ensure, and its tolerance of size is 2.0 μm, valve seat outside thread 33 is processed with the screw-internal thread fit of clamping nut 8, and valve seat internal thread 17 coordinates with spool outside thread 24 to be processed;
The core sealing groove 22 of spool 10 adopts precision machine tool to repair and adopts high-precision lapping machine to grind, and ensures that its degree of finish is 0.8 μm, and spool gas port adopts precision machine tool to ensure that its tolerance of size is 1.5 μm;
The valve rod periphery 27 of valve rod 2 is owing to contacting with the dynamic sealing assembly in valve body 7 upper end, thus one of this valve mechanism core important document needing special concern in course of working is become, it is after use precision machine tool carefulness finishing, its tolerance of size need be made to be 0.8 μm and beating vertically is 1.5 μm, after this re-use the meticulous polishing of external cylindrical grinding machine, make its degree of finish be 0.4 μm to guarantee to ensure good motive sealing performance;
Sealing nut 3 and clamping nut 8 all adopt the metallic material overall processing of high mechanical properties shaping, and wherein the internal thread of sealing nut 3 coordinates with valve body outside thread 32 and processes, and the internal thread of clamping nut 8 coordinates with valve seat outside thread 33 to be processed;
Seal washer 4 and seal ring 5 form by the metallic material overall processing of high mechanical properties, their upper and lower surface all adopts precision lathe to repair and uses precision grinder to grind and makes flatness be 0.8 μm, and the parallelism of respective upper and lower surface is 0.9 μm;
The material of valve seals 6, valve seat insert 30 and valve core seal ring 31 can select the nonmetallic material of high-quality, also the metallic material that ductility is good can be selected, wherein the internal-and external diameter of valve seals 6 coordinates with valve rod periphery 27 and valve seal groove 12 respectively and processes, valve seat insert 30 coordinates with press seal face 15 to be processed, and valve core seal ring 31 coordinates with core sealing groove 22 to be processed;
One end of hose coupler 11 to insert in valve body side face port 13 and the mode seal welding using laser bonding together, the other end and the inflating and exhausting system of hose coupler 11 are tightly connected;
After above-mentioned operation all completes, each parts are assembled according to shown in Fig. 1, namely form linear compressor Air inflating and exhausting valve door that is high pressure resistant and guarantor's high vacuum.
Claims (2)
1. a linear compressor Air inflating and exhausting valve door that is high pressure resistant and guarantor's high vacuum, it comprises handle (1), valve rod (2), sealing nut (3), seal washer (4), seal ring (5), valve seals (6), valve body (7), clamping nut (8), valve seat (9), spool (10), valve seat insert (30), valve core seal ring (31) and hose coupler (11), it is characterized in that:
The inside of described handle (1) processes square opening in handle (29), and outside is made into three claw types so that rotation process;
Described valve rod (2) is processed into elongated shaft-like, valve rod periphery (27) the meticulous polishing of its outside makes Glabrous sting, process valve rod in the intermediate portion of valve rod (2) and protrude step (26), valve rod protrudes the diameter of external diameter slightly larger than valve rod (2) of step (26), one end of valve rod (2) is made into valve rod flat head (25), and the other end is made into the valve rod square spigot (28) for inserting handle (1);
Described valve body (7) is hollow column, its inside, upper end is processed with smooth valve seal groove (12), side is processed with the valve body side face port (13) that can load hose coupler (11), hollow space is processed with step surface in valve body (14), and lower end is processed with press seal face (15);
The upper end of described valve seat (9) is processed with valve base sealing groove (19), valve seat insert (30) is placed on valve base sealing groove (19), strength extruding valve seat insert (30) on press seal face (15) is delivered to by clamping nut (8), realize being tightly connected between valve body (7) and valve seat (9), the inside middle of valve seat (9) processes valve seat conical surface (16), the T-shaped gas guide groove (18) for conducting gas is processed under valve seat conical surface (16), the inside of valve seat (9) is processed with valve seat internal thread (17) bottom, valve seat (9) to be fixed on linear compressor by valve seat flanged surface (20) and to seal,
The upper end of described spool (10) is round end, round end processes spool groove (21), semicircular core sealing groove (22) is processed below round end, the lower end external process of spool (10) goes out spool outside thread (24), and inside processes spool gas port (23);
The interior interval of valve seal groove (12) of described valve body (7) upper end loads valve seals (6), seal ring (5) and seal washer (4), centre inserts valve rod (2) again, tighten sealing nut (3), seal washer (4) just compresses valve seals (6), and valve seals (6) fills all gaps of the valve seal groove (12) of valve body (7) upper end after expanding; Smooth valve rod periphery (27) should make valve rod (2) rotate and to move up and down and not affect sealing effect; In valve body, the internal diameter of step surface (14) is less than the external diameter that valve rod gives prominence to step (26), thus valve rod (2) cannot be passed from the inner chamber lower end of valve body (7);
In core sealing groove (22), valve core seal ring (31) is installed, then entirety is screwed into valve seat internal thread (17), when spool (10) is not tightened completely, valve seat (9) up and down two ends is communicated with spool gas port (23) by T-shaped gas guide groove (18), after the spool outside thread (24) of spool (10) dependence lower end is tightened completely, valve core seal ring (31) fills up the space that core sealing groove (22) and valve seat conical surface (16) are formed completely after expanding, the conducting up and down of blocking-up valve seat (9); Together, the other end and the inflating and exhausting system of hose coupler (11) are tightly connected the interior also seal welding in one end insertion valve body side face port (13) of hose coupler (11); Fill in the process of exhaust at linear compressor, valve seat (9) is sealed connected together with valve body (7) by clamping nut (8) and valve seals (6), valve rod flat head (25) contacts with spool groove (21), controls the position of spool (10); Fill after exhaust completes at linear compressor, by handle (1) rotary valve rod (2), band movable valve plug (10) rotates, the valve core seal ring (31) of spool (10) moves down, finally be pressed on valve seat conical surface (16) completely, complete seal operation, then valve rod (2) and spool (10) is allowed to depart from, unclamp clamping nut (8) again, whole inflating and exhausting system is separated with linear compressor, only valve seat (9) and spool (10) is stayed on linear compressor; Thus a kind of linear compressor of common formation Air inflating and exhausting valve door that is high pressure resistant and guarantor's high vacuum.
2. one kind manufactures linear compressor as claimed in claim 1 method that is high pressure resistant and the Air inflating and exhausting valve door of guarantor's high vacuum, it is characterized in that, valve body (7), valve seat (9), spool (10) and valve rod (2) all adopt the metal bar material overall processing of high mechanical properties to form, first process elementary contour by numerical control machine tool, re-use lathe with high precision finishing shaping; The press seal face (15) of valve body (7) and the surface of valve seal groove (12) all adopt high precision grinder to grind, ensure that its degree of finish is all better than 2.0 μm, to guarantee its sealability, valve body outside thread (32) is processed with the screw-internal thread fit of sealing nut (3); The valve seat conical surface (16) of valve seat (9) adopts precision machine tool finishing, ensure that its angle is between 50 ° ~ 70 °, then high-precision honing machine is adopted to grind, guarantee that its degree of finish is better than 2.0 μm, T-shaped gas guide groove (18) adopts precision machine tool to ensure that its tolerance of size is better than 3.0 μm, valve seat outside thread (33) is processed with the screw-internal thread fit of clamping nut (8), and valve seat internal thread (17) coordinates with spool outside thread (24) to be processed; The core sealing groove (22) of spool (10) adopts precision machine tool repair and adopt high-precision lapping machine to grind, and ensures that its degree of finish is better than 1.0 μm, and spool gas port adopts precision machine tool to ensure that its tolerance of size is better than 2.0 μm; The valve rod periphery (27) of valve rod (2) is owing to contacting with the dynamic sealing assembly in valve body (7) upper end, thus one of this valve mechanism core important document needing special concern in course of working is become, it is after use precision machine tool carefulness finishing, its tolerance of size need be made to be better than 1.0 μm and vertically beat not higher than 2.0 μm, after this re-use the meticulous polishing of external cylindrical grinding machine, make its degree of finish be better than 0.5 μm to guarantee to ensure good motive sealing performance; Sealing nut (3) and clamping nut (8) all adopt the metallic material overall processing of high mechanical properties shaping, wherein the internal thread of sealing nut (3) coordinates with valve body outside thread (32) and processes, and the internal thread of clamping nut (8) coordinates with valve seat outside thread (33) to be processed; Seal washer (4) and seal ring (5) form by the metallic material overall processing of high mechanical properties, their upper and lower surface all adopts precision lathe to repair and uses precision grinder to grind and makes flatness all be better than 1.0 μm, and the parallelism of respective upper and lower surface is also better than 1.0 μm; The material of valve seals (6), valve seat insert (30) and valve core seal ring (31) can select the nonmetallic material of high-quality, also the metallic material that ductility is good can be selected, wherein the internal-and external diameter of valve seals (6) coordinates with valve rod periphery (27) and valve seal groove (12) respectively and processes, valve seat insert (30) coordinates with press seal face (15) to be processed, and valve core seal ring (31) coordinates with core sealing groove (22) to be processed; One end of hose coupler (11) to insert in valve body side face port (13) and the mode seal welding using laser bonding together, the other end and the inflating and exhausting system of hose coupler (11) are tightly connected; After above-mentioned operation all completes, by each assembling parts, namely form linear compressor Air inflating and exhausting valve door that is high pressure resistant and guarantor's high vacuum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410546866.2A CN104329240B (en) | 2014-10-16 | 2014-10-16 | The linear compressor high pressure resistant and Air inflating and exhausting valve door of guarantor's high vacuum and manufacture method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410546866.2A CN104329240B (en) | 2014-10-16 | 2014-10-16 | The linear compressor high pressure resistant and Air inflating and exhausting valve door of guarantor's high vacuum and manufacture method |
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| Publication Number | Publication Date |
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| CN104329240A true CN104329240A (en) | 2015-02-04 |
| CN104329240B CN104329240B (en) | 2016-08-24 |
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| CN201410546866.2A Expired - Fee Related CN104329240B (en) | 2014-10-16 | 2014-10-16 | The linear compressor high pressure resistant and Air inflating and exhausting valve door of guarantor's high vacuum and manufacture method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608917A (en) * | 2018-06-14 | 2019-12-24 | 中国石油化工股份有限公司 | Sampling device and sampling method for constant-pressure collection of high-pressure condensate oil gas |
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|---|---|---|---|---|
| EP0892200A2 (en) * | 1998-07-09 | 1999-01-20 | Firma Altenburger Armaturenwerk und Metallgiesserei GmbH | Compressor shut-off valve |
| EP1400692A1 (en) * | 2002-09-19 | 2004-03-24 | HOERBIGER KOMPRESSORTECHNIK SERVICES GmbH | Volumetric piston compressor and method to continuously adjust its displacement |
| CN201428808Y (en) * | 2009-06-15 | 2010-03-24 | 台州市安洲机械有限公司 | Vertical stop valve with installing hole |
| CN202338648U (en) * | 2011-12-15 | 2012-07-18 | Tcl空调器(中山)有限公司 | Air-conditioner stop valve |
| CN204226146U (en) * | 2014-10-16 | 2015-03-25 | 中国科学院上海技术物理研究所 | Linear compressor Air inflating and exhausting valve door that is high pressure resistant and guarantor's high vacuum |
-
2014
- 2014-10-16 CN CN201410546866.2A patent/CN104329240B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0892200A2 (en) * | 1998-07-09 | 1999-01-20 | Firma Altenburger Armaturenwerk und Metallgiesserei GmbH | Compressor shut-off valve |
| EP1400692A1 (en) * | 2002-09-19 | 2004-03-24 | HOERBIGER KOMPRESSORTECHNIK SERVICES GmbH | Volumetric piston compressor and method to continuously adjust its displacement |
| CN201428808Y (en) * | 2009-06-15 | 2010-03-24 | 台州市安洲机械有限公司 | Vertical stop valve with installing hole |
| CN202338648U (en) * | 2011-12-15 | 2012-07-18 | Tcl空调器(中山)有限公司 | Air-conditioner stop valve |
| CN204226146U (en) * | 2014-10-16 | 2015-03-25 | 中国科学院上海技术物理研究所 | Linear compressor Air inflating and exhausting valve door that is high pressure resistant and guarantor's high vacuum |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608917A (en) * | 2018-06-14 | 2019-12-24 | 中国石油化工股份有限公司 | Sampling device and sampling method for constant-pressure collection of high-pressure condensate oil gas |
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| CN104329240B (en) | 2016-08-24 |
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