CN202109047U - Flow rate regulation valve - Google Patents
Flow rate regulation valve Download PDFInfo
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- CN202109047U CN202109047U CN2011202217414U CN201120221741U CN202109047U CN 202109047 U CN202109047 U CN 202109047U CN 2011202217414 U CN2011202217414 U CN 2011202217414U CN 201120221741 U CN201120221741 U CN 201120221741U CN 202109047 U CN202109047 U CN 202109047U
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Abstract
The utility model discloses a flow rate regulation valve, which comprises a valve seat (1) and a valve rod (2), wherein the valve seat (1) is provided with a valve opening (121) in a valve cavity of the valve seat (1), the valve opening (121) is opened or closed by the valve rod (2), the valve opening (121) is upwards projected with a sleeve barrel extending part (122) in the axial direction, the valve rod (2) is in a tubular shape, the lower end part of the valve rod is a cylinder, an opening groove (3) corresponding to the flow rate curve is arranged on the circumferential side wall of the lower end part of either the sleeve barrel extending part (122) or the valve rod (2), and the lower end part of either the sleeve barrel extending part (122) or the valve rod (2) extends into the other one or extends out from the other one so that the opening groove (3) is uncommunicated from or communicated with the valve opening (121). Through the structural design of the flow rate regulation valve, when the required flow rate curve is ensured to be obtained, the refrigerating agent pressure received by the valve rod (2) in the axial direction can also be balanced.
Description
Technical field
The utility model relates to the fluid control component technical field, particularly a kind of flow control valve.
Background technique
Flow control valve is a vitals of forming refrigeration system, is to remove another basic element of character outside vaporizer, compressor and the condenser in four basic elements of character of refrigeration system.The working procedure of flow control valve is generally: along with the energising or the outage of coil device, needle is regulated the aperture of valve port, thereby regulates the flow of refrigeration agent.
Generally speaking, flow control valve need be provided with different flow curves according to different application environments, please refer to Fig. 1, and Fig. 1 is the schematic representation of a kind of flow curve of flow control valve in the existing technology.
As shown in Figure 1, ordinate V represents the flow of refrigeration agent through the valve port of flow control valve, and abscissa S represents the distance of the valve rod of flow control valve away from valve port; As shown in Figure 1, along with valve rod gradually away from valve port, the flow of refrigeration agent increases gradually, thereby forms a kind of flow curve of tool certain curvature.
In the prior art; In order to form flow curve shown in Figure 1; The patent No. is that the U. S. Patent of US6568656B1 discloses a kind of flow control valve; Specifically please refer to Fig. 2 and Fig. 3, Fig. 2 is the structural representation of a kind of flow control valve in the existing technology, and Fig. 3 is the pressure distribution schematic representation of flow control valve refrigeration agent in the valve port position among Fig. 2.
As shown in Figure 2, this flow control valve of the prior art comprise valve seat 1 ' with valve rod 2 ', valve seat 1 ' be provided with valve port 1 ' 1 in the inside of its valve pocket, valve rod 2 ' move up and down vertically, thereby regulate the flow of said valve port 1 ' 1.As shown in Figure 2, valve rod 2 ', comprise circular cone pipeline section 2 ' 1, cylinder pipeline section 2 ' 2 and be located at the diaphragm seal 2 ' 3 between the two for dividing a body structure, along with valve rod 2 ' move up and down, said valve port 1 ' 1 is opened or closed to diaphragm seal 2 ' 3; In addition, valve rod 2 ' on also offer balanced runner 2 ' 4, in order to be communicated with valve rod 2 ' top and bottom, thereby the pressure of balanced system cryogen is to the influence of valve rod 2 ' cause.
As shown in Figure 2 because valve rod 2 ' the underpart be provided with circular cone pipeline section 2 ' 1, thereby this circular cone pipeline section 2 ' 1 just can form flow curve shown in Figure 1 away from said valve port 1 ' 1; Simultaneously, change the tapering of circular cone pipeline section 2 ' 1, the curvature that just can regulate flow curve.Yet this flow control valve has following defective:
The first, as shown in Figure 3, because valve rod 2 ' be provided with circular cone pipeline section 2 ' 1 in its underpart; Thereby in valve port 1 ' 1 position; The pressure of refrigeration agent has three pressure ratings substantially, is respectively the maximum A pressure rating of pressure (laterally schematic lines mil put), the B pressure rating (laterally schematic lines is put than mil) that pressure is placed in the middle; The C pressure rating (the laterally the thinnest position of schematic lines) that pressure is minimum, thereby the diverse location of this circular cone pipeline section 2 ' 1 receives above-mentioned three kinds of different pressure respectively; As shown in Figure 3, the lower ending opening of balanced runner 2 ' 4 extend into A pressure rating region, thereby valve rod 2 ' the pressure that bears of upper end be the A pressure rating; Hence one can see that; Under the identical prerequisite of valve rod 2 ' top and bottom lifting surface area; Valve rod 2 ' the active force that receives of the active force that receives of upper end and lower end (that is circular cone pipeline section 2 ' 1) and unequal; That is the pressure of the refrigeration agent of valve rod 2 ' afforded and uneven, and then influenced the stability of valve rod 2 ' axial motion;
The second, as shown in Figure 2, in the process of diaphragm seal 2 ' 3 close port 1 ' 1, diaphragm seal 2 ' 3 can clash into valve port 1 ' 1, and the active force of this bump is bigger, and after the multiple switching operation, diaphragm seal 2 ' 3 is yielding, be prone to leak, and the life-span is short;
The 3rd; As shown in Figure 2, valve rod 2 ', comprise circular cone pipeline section 2 ' 1, diaphragm seal 2 ' 3 and cylinder pipeline section 2 ' 2 for dividing body structure; The three adopts and to be threaded or other Placement, and jolting when vibration or the work vibration of compressor during transportation can make the loosening danger of throwing off of valve rod 2 ' have.
In addition, need to prove that in the prior art, the patent No. is 200580023202.7 the disclosed flow control valve of Chinese patent, also has above-mentioned three defectives, specifically can repeat no more at this referring to the full text of this patent.
In view of this; How flow control valve of the prior art is made improvement; Thereby can obtain needed different flow curve according to different application environments on the one hand; The refrigerant pressure that on the other hand can the balance valve rod receives in the axial direction is the problem that those skilled in the art need solution badly.
The model utility content
The technical problem that the utility model will solve is for providing a kind of flow control valve, the structural design of this flow control valve when guaranteeing to obtain needed flow curve, the refrigerant pressure that can also the balance valve rod receives in the axial direction.
For solving the problems of the technologies described above, the utility model provides a kind of flow control valve, comprises valve seat and valve rod, and said valve seat is provided with valve port in its valve pocket, and said valve port is opened or closed to said valve rod; Said valve port is protruding upward vertically to have the sleeve extension, and said valve rod in a tubular form; Offer on the circumferential side wall of one in the underpart of said sleeve extension and said valve rod and flow curve corresponding opening groove; And one in the underpart of said sleeve extension and said valve rod stretch into another person's inside or stretched out by it, so that interrupt being communicated with or making its connection of said opening slot and said valve port.
Preferably, offer said opening slot on the circumferential side wall of said sleeve extension; Said sleeve extension is provided with the first sealed step face bottom that the position is lower than said opening slot, the lower end surface of said valve rod and the said first sealed step face contact seal or disengage.
Preferably, the said first sealed step face is opened in the inside of said sleeve extension; The underpart of said valve rod is stretched into the inside of said sleeve extension or is stretched out by it.
Preferably, offer said opening slot on the circumferential side wall of the underpart of said valve rod; The underpart of said valve rod is provided with the second sealed step face that the position is higher than the top of said opening slot, the upper-end surface of said sleeve extension and the said second sealed step face contact seal or disengage.
Preferably, the said second sealed step face is opened in the inside of the underpart of said valve rod; Said sleeve extension stretch into said valve rod the underpart inside or stretch out by it.
Preferably, the inside injection moulding of said valve rod is formed with the injection molding body that nut is installed, and the lower end surface of this injection molding body is higher than the top of said opening slot, and the lower end surface of this injection molding body forms the said second sealed step face.
Preferably, the underpart of said valve rod is formed with the circumference expansion section that external diameter increases, and the said second sealed step face is located at the inside of said circumference expansion section.
Preferably, the said second sealed step face is opened in the outside of the underpart of said valve rod; The underpart of said valve rod to stretch into said sleeve extension inner or stretched out by it.
Preferably, said opening slot is the V-type groove, and the big opening end of said V-type groove is towards the underpart or the said sleeve extension of said valve rod.
Preferably, said opening slot is a Y type groove, and the big opening end of said Y type groove is towards the underpart or the said sleeve extension of said valve rod.
Preferably, said valve seat comprises upper valve base and lower valve base for dividing body structure, and said valve port and said sleeve extension all are opened on the said lower valve base, and said sleeve extension stretches in the cavity of said upper valve base.
Preferably, said flow control valve comprises that also first takes over and second adapter, and said first adapter is connected on the said upper valve base, and said second adapter is connected on the said lower valve base.
Preferably, said lower valve base comprises pedestal, and said sleeve extension is located at the upper end of said pedestal, and the sealing of the lower end surface of said pedestal; The circumferential side wall of said pedestal is provided with interface, and said second adapter is connected on the said interface.
Preferably, said lower valve base comprises pedestal, and said sleeve extension is located at the upper end of said pedestal; Said pedestal is sleeve shape, and its lower end surface is provided with interface, and said second takes over and be connected on the said interface.
On the basis of existing technology, the valve port of the flow control valve that the utility model provided is protruding upward vertically to have a sleeve extension, said valve rod in a tubular form, and its underpart is a cylindrical body; Offer on the circumferential side wall of one in the underpart of said sleeve extension and said valve rod and flow curve corresponding opening groove; In the underpart of said sleeve extension and said valve rod one stretched into another person's inside or stretched out by it, so that interrupt being communicated with or making its connection of said opening slot and said valve port.
The shape of said opening slot is corresponding with needed flow curve; Such as being V-type groove, Y type groove or other shapes; Which type of flow curve is refrigeration system need, and just can on the sidewall of the circumferential side wall of sleeve extension or valve rod underpart, offer corresponding opening groove with it.During work; Along with said valve rod and said sleeve extension break away from each other, said opening slot begins to be communicated with said valve port small flow, and along with said valve rod and said sleeve extension further break away from; The circulation area of opening slot increases gradually; The flow of refrigeration agent increases gradually, all opens until opening slot, thereby realizes being communicated with of peak rate of flow with valve port.Hence one can see that, and the flow control valve that the utility model provided can obtain needed flow curve.
In addition, because the underpart of valve rod is a cylindrical body, rather than cone, thereby the refrigerant pressure that is born of valve rod lower end is consistent; Simultaneously; Because valve rod in a tubular form, connect vertically, thereby the refrigerant pressure that the valve rod upper end is born equals the refrigerant pressure that bear the lower end; Under the prerequisite that valve rod top and bottom lifting surface area equates, the refrigerant pressure that valve rod bears has in the axial direction obtained balance.
In sum, the flow control valve that the utility model provided when guaranteeing to obtain needed flow curve, the refrigerant pressure that can also the balance valve rod receives in the axial direction.
Description of drawings
Fig. 1 is the schematic representation of a kind of flow curve of flow control valve in the existing technology;
Fig. 2 is the structural representation of a kind of flow control valve in the existing technology;
Fig. 3 is the pressure distribution schematic representation of flow control valve refrigeration agent in the valve port position among Fig. 2;
Fig. 4 is the structural representation of flow control valve among a kind of embodiment of the utility model;
Fig. 5-1 is the assembling schematic representation of valve seat, sleeve and the adapter of flow control valve among Fig. 4;
Fig. 5-2 is the decomposing schematic representation of each parts among Fig. 5-1;
Fig. 5-3 has made the assembling schematic representation after the further improvement for valve seat, sleeve and adapter in Fig. 5-1;
Fig. 5-4 has made the assembling schematic representation after the another kind of improvement for valve seat, sleeve and adapter in Fig. 5-1;
Fig. 6-1 is the assembling schematic representation of valve seat, sleeve and adapter among the another kind of embodiment;
Fig. 6-2 is the decomposing schematic representation of each parts among Fig. 6-1;
Fig. 7-1 is the structural representation of lower valve base among Fig. 5-1;
Fig. 7-2 is the sectional view of lower valve base among Fig. 7-1;
Fig. 8-1 is lower valve base and the assembling schematic representation of valve rod among Fig. 7-1 and Fig. 7-2;
Fig. 8-2 has made the structural representation after the further improvement for lower valve base among Fig. 8-1 and valve rod;
Fig. 8-3 is the flow curve schematic representation that the cooperating structure of lower valve base and valve rod among Fig. 8-1 forms;
Fig. 8-4 is the flow curve schematic representation that the cooperating structure of lower valve base and valve rod among Fig. 8-2 forms;
Fig. 9-1 is the structural representation of the valve rod of flow control valve among the another kind of embodiment of the utility model;
Fig. 9-2 is the sectional view of the valve rod among Fig. 9-1;
Fig. 9-3 be with Fig. 9-1 in the structural representation of the lower valve base that cooperates of valve rod;
Figure 10-1 is the structural representation after the valve rod among Fig. 9-1 has been done further improvement;
Figure 10-2 is the sectional view of the valve rod among Figure 10-1;
Figure 11 is the cooperating structure schematic representation of valve rod and lower valve base among another embodiment of the utility model.
Wherein, the corresponding relation between reference character and the component names is among Fig. 1 to Fig. 3:
1 ' valve seat; 1 ' 1 valve port; 2 ' valve rod; 2 ' 1 circular cone pipeline sections; 2 ' 2 cylinder pipeline sections; 2 ' 3 diaphragm seals; 2 ' 4 balanced runners.
Corresponding relation among Fig. 4 to Figure 11 between reference character and the component names is:
1 valve seat; 11 upper valve bases; 12 lower valve bases; 121 valve ports; 122 sleeve extensions; 123 first sealed step faces; 124 pedestals;
2 valve rods; 21 second sealed step faces; 22 injection molding bodies; 23 circumference expansion sections;
3 opening slots; 41 first take over; 42 second take over; 43 interfaces;
5 motors; 51 output shafts; 52 motor casings;
61 screw mandrels; 62 pinion stands; Sleeve 63.
Embodiment
The core of the utility model is for providing a kind of flow control valve, the structural design of this flow control valve when guaranteeing to obtain needed flow curve, the refrigerant pressure that can also the balance valve rod receives in the axial direction.
In order to make those skilled in the art understand the technological scheme of the utility model better, the utility model is done further to specify below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 4, Fig. 4 is the structural representation of flow control valve among a kind of embodiment of the utility model.
In the utility model; The electric expansion valve that is provided is used to regulate the flow of refrigeration agent; As shown in Figure 4, electric expansion valve comprises motor casing 52, is provided with motor 5 in the motor casing 52; The output shaft 51 of motor 5 is in transmission connection through gear train and screw mandrel 61, thereby screw mandrel 61 is along with output shaft 51 rotates; As shown in Figure 4, gear train is supported on the pinion stand 62, and the outside of pinion stand is provided with sleeve 63, and screw mandrel 611 passes pinion stand 62 and be connected with valve rod 2, and along with the rotation of screw mandrel 61, valve rod 2 moves up and down vertically, thereby realizes the purpose that refrigerant flow is regulated.
As shown in Figure 4, valve seat 1 is provided with valve port 121 in its valve pocket, and valve rod 2 is opened or close port 121; On this basis, as shown in Figure 4, valve port 121 is protruding upward vertically to have a sleeve extension 122, valve rod 2 in a tubular form, and its underpart is a cylindrical body; Offer and flow curve corresponding opening groove 3 on the circumferential side wall of one in the underpart of sleeve extension 122 and valve rod 2; And another person's inside is stretched in one in the underpart of sleeve extension 122 and valve rod 2 or stretched out by it that (that is sleeve extension 122 stretches into the inside of valve rod 2 underparts or stretched out by it; Perhaps valve rod 2 underparts are stretched into the inside of sleeve extension 122 or are stretched out by it) so that interrupt being communicated with or making its connection of opening slot 3 and valve port 121.
The shape of opening slot 3 is corresponding with needed flow curve; Such as being V-type groove, Y type groove or other shapes; Refrigeration system needs the flow curve of what shape, just can on the sidewall of the circumferential side wall of sleeve extension 122 or valve rod 2 underparts, offer corresponding opening groove 3 with it.During work; Along with valve rod 2 and sleeve extension 122 break away from each other, opening slot 3 beginnings are communicated with valve port 121 small flows, and along with valve rod 2 and sleeve extension 122 further break away from; The circulation area of opening slot 3 increases gradually; The flow of refrigeration agent increases gradually, all opens until opening slot 3, thereby realizes being communicated with of peak rate of flow with valve port 121.Hence one can see that, and the flow control valve that the utility model provided can obtain needed flow curve.
In addition, because the underpart of valve rod 2 is a cylindrical body, rather than cone, thereby the refrigerant pressure that is born of valve rod 2 lower ends is consistent; Simultaneously; Because valve rod 2 in a tubular form, connect vertically, thereby the refrigerant pressure that bear valve rod 2 upper ends equals the refrigerant pressure that bear its lower end; Under the prerequisite that valve rod 2 top and bottom lifting surface areas equate, the refrigerant pressure that valve rod 2 bears has in the axial direction obtained balance.
Need to prove, in the above-described embodiments, can on the sidewall of sleeve extension 122, offer opening slot 3, perhaps offer opening slot 3 in the underpart of valve rod 2; In these two kinds of technological schemes, sleeve extension 122 stretches into the inside of valve rod 2 underparts or is stretched out by it, and perhaps valve rod 2 underparts are stretched into the inside of sleeve extension 122 or stretched out by it, all can interrupt being communicated with or making its connection of opening slot 3 and valve port 121.
Please refer to Fig. 5-1 to Fig. 5-4, Fig. 5-1 is the assembling schematic representation of valve seat, sleeve and the adapter of flow control valve among Fig. 4; Fig. 5-2 is the decomposing schematic representation of each parts among Fig. 5-1; Fig. 5-3 has made the assembling schematic representation after the further improvement for valve seat, sleeve and adapter in Fig. 5-1; Fig. 5-4 has made the assembling schematic representation after the another kind of improvement for valve seat, sleeve and adapter in Fig. 5-1.
In technique scheme, can make further improvement.Such as, shown in Fig. 5-1 and Fig. 5-2, valve seat 1 comprises upper valve base 11 and lower valve base 12 for dividing body structure, valve port 121 all is opened on the lower valve base 12 with sleeve extension 122, and sleeve extension 122 stretches in the cavity of upper valve base 11.Add man-hour, on lower valve base 12, process earlier valve port 121 and sleeve extension 122, and then processing upper valve base 11, at last with lower valve base that processes 12 and upper valve base 11 assemblings.Hence one can see that, and the structural design of valve seat 1 split has realized the processing of sleeve extension 122 easily, has simplified processing technology.
In addition, to shown in Fig. 5-2, said flow control valve comprises that also first adapter, 41 and second adapter, 42, the first adapters 41 are connected on the upper valve base 11 like Fig. 5-1, and second takes over 42 is connected on the lower valve base 12.Shown in Fig. 5-1, first takes over 41 and second adapter 42 laterally arranges, and lays respectively at the both sides of valve seat 1; Shown in Fig. 5-2, first takes over 41 and second adapter 42 laterally arranges, and all is positioned at the same side of valve seat 1; Shown in Fig. 5-3, first takes over 41 and second takes over 42 antarafacial settings, and becomes 90 ° of angles substantially, certainly, also is not limited to 90 ° of angles.Hence one can see that, and the said structure design can be provided with first and take over the position of 41 and second adapter 42, thereby have extremely strong adaptability according to the refrigeration system different application environments.
Particularly, shown in Fig. 5-2, lower valve base 12 comprises pedestal 124, and sleeve extension 122 is located at the upper end of pedestal 124, and the sealing of the lower end surface of pedestal 124; The circumferential side wall of pedestal 124 is provided with interface 43, the second adapters 42 and can be connected on the interface 43.This interface 43 can be arranged on the arbitrary position of pedestal 124 circumferential side wall as required, thereby realizes the structural design among Fig. 5-1, Fig. 5-3 and Fig. 5-4.
Please refer to Fig. 6-1 and Fig. 6-2, Fig. 6-1 is the assembling schematic representation of valve seat, sleeve and adapter among the another kind of embodiment; Fig. 6-2 is the decomposing schematic representation of each parts among Fig. 6-1.
On the basis of technique scheme, can also make another kind of structural design to lower valve base 12.Such as, shown in Fig. 6-2, the pedestal 124 of lower valve base 12 is sleeve shape, and its lower end surface is provided with interface 43, the second and takes over 42 and be connected on the interface 43.Shown in Fig. 6-1, this kind structural design can be so that first take over 41 and second and take over 42 axis coplane, and become 90 ° of angles, thus the corresponding applied environment of adaptation refrigeration system.
On the basis of above-mentioned any technological scheme, further the position of concrete designed openings groove 3 and the structural design that adapts with it specifically please refer to Fig. 7-1, Fig. 7-2, Fig. 8-1 and Fig. 8-2, and Fig. 7-1 is the structural representation of lower valve base among Fig. 5-1; Fig. 7-2 is the sectional view of lower valve base among Fig. 7-1; Fig. 8-1 is lower valve base and the assembling schematic representation of valve rod among Fig. 7-1 and Fig. 7-2; Fig. 8-2 has made the structural representation after the further improvement for lower valve base among Fig. 8-1 and valve rod.
Shown in Fig. 7-1, opening slot 3 is opened on the circumferential side wall of sleeve extension 122; On this basis, shown in Fig. 7-2, sleeve extension 122 is provided with the first sealed step face 123 bottom that the position is lower than opening slot 3, and this first sealed step face 123 can further be located at the inside of sleeve extension 122; On this basis, shown in Fig. 8-1, the underpart of valve rod 2 is stretched into the inside of sleeve extension 122 or is stretched out by it, so that the lower end surface of valve rod 2 and 122 contact seals of the first sealed step face or disengage.In this kind structural design; Be the lower end surface and 123 sealings of the first sealed step face of valve rod 2, the lower end surface of valve rod 2 is difficult for deforming because rigidity is strong; Thereby, all are able in sealability and working life significantly improve with respect to the structural design of diaphragm seal of the prior art.
Certainly, the first sealed step face 123 also can be located at the outside of sleeve extension 122, and on this basis, the underpart of valve rod 2 need be set in the outside of sleeve extension 122.The technique effect of this kind structural design and above-mentioned basic identical repeats no more at this.
Please be simultaneously with reference to figure 8-1, Fig. 8-2, Fig. 8-3 and Fig. 8-4, Fig. 8-3 is the flow curve schematic representation of the cooperating structure formation of lower valve base and valve rod among Fig. 8-1; Fig. 8-4 is the flow curve schematic representation that the cooperating structure of lower valve base and valve rod among Fig. 8-2 forms.
Needing explanation is that the utility model does not limit for the shape of opening slot 3, thereby any one configured openings groove 3 is all within the protection domain of the utility model.Particularly, shown in Fig. 8-2, opening slot 3 can be the V-type groove; And the big opening end of said V-type groove is towards sleeve extension 122, and the flow curve of this V-type groove is shown in Fig. 8-4, and the angle of V-type groove is big more; Corresponding flow curvature is just big more, thereby flow adjustment range is also just big more; Shown in Fig. 8-1; Opening slot 3 is a Y type groove, and the big opening end of said Y type groove is towards sleeve extension 122, and the flow curve of this Y type groove is shown in Fig. 8-3; With respect to the flow curve of V-type groove among Fig. 8-4, the flow curve of this Y type groove is a kind of broken line type flow curve.
Shown in Fig. 9-1, Fig. 9-2 and Fig. 9-3, Fig. 9-1 is the structural representation of the valve rod of flow control valve among the another kind of embodiment of the utility model; Fig. 9-2 is the sectional view of the valve rod among Fig. 9-1; Fig. 9-3 be with Fig. 9-1 in the structural representation of the lower valve base that cooperates of valve rod.
Certainly, specifically designed openings groove 3 is located on the underpart of valve rod 2.Shown in Fig. 9-1, offer opening slot 3 on the circumferential side wall of the underpart of valve rod 2; On this basis, shown in Fig. 9-2, the underpart of valve rod 2 is provided with the second sealed step face 21 that the position is higher than the top of opening slot 3, and further, this second sealed step face 21 can be located at the inside of valve rod 2 underparts; On this basis, please be simultaneously with reference to figure 9-1 to Fig. 9-3, sleeve extension 122 can further stretch into valve rod 2 the underpart inside or stretch out by it so that the upper-end surface of sleeve extension 122 and 21 contact seals of the second sealed step face or disengage.In this kind structural design; Be the upper-end surface and 21 sealings of the second sealed step face of sleeve extension 122, the second sealed step face 21 is difficult for deforming because rigidity is strong; Thereby, all are able in sealability and working life significantly improve with respect to the structural design of diaphragm seal of the prior art.
Certainly; The second sealed step face 21 also can be located at the outside of valve rod 2 underparts; On this basis, sleeve extension 122 is set in the outside of valve rod 2 underparts, thus so that the upper-end surface of sleeve extension 122 and this second sealed step face, 21 contact seals or disengage.The technique effect of this kind structural design and above-mentioned basic identical repeats no more at this.
Shown in Fig. 9-2, in technique scheme, can also make further improvement.Such as, the inside injection moulding of valve rod 2 is formed with the injection molding body 22 that nut is installed, and the lower end surface of this injection molding body 22 is higher than the top of opening slot 3, and the lower end surface of this injection molding body 22 forms the second sealed step face 21.This kind structural design is convenient to the installation of nut on the one hand, also is convenient to the formation of the second sealed step face 21 on the other hand, and the integrated effect of structure is better.
Please refer to Figure 10-1 and Figure 10-2, Figure 10-1 is the structural representation after the valve rod among Fig. 9-1 has been done further improvement; Figure 10-2 is the sectional view of the valve rod among Figure 10-1.
In addition, can also design the formation structure of the another kind of second sealed step face 21.Shown in Figure 10-1 and Figure 10-2, the underpart of valve rod 2 is formed with the inside that circumference expansion section 23, the second sealed step faces 21 that external diameter increases are located at circumference expansion section 23.This kind structural design also can form the second sealed step face 21 comparatively easily, and cost is lower.
In addition, the second sealed step face 21 can also be located on the outside of underpart of valve rod 2, specifically please refer to Figure 11, and Figure 11 is the cooperating structure schematic representation of valve rod and lower valve base among another embodiment of the utility model.
Shown in figure 11; The underpart of valve rod 2 is provided with opening slot 3; And the outside of the underpart of valve rod 2 is provided with the second sealed step face 21; The underpart of valve rod 2 is stretched into sleeve extension 122 or is stretched out by it, thus so that the upper-end surface contact seal of the second sealed step face 21 and sleeve extension 122 or disengage.Obviously, this kind technological scheme also can the technical solution problem, realizes the model utility purpose.And this kind structural design also can form the second sealed step face 21 comparatively easily, and cost is lower.
At last; Need to prove; In above-mentioned any technological scheme, the utility model is owing to the structural design of having avoided adopting diaphragm seal in the existing technology, thereby valve rod 2 can adopt integral structure vertically; Thereby under the situation of the jolting vibration of compressor when vibration or work in when transportation, can there be the risk of disengagement.
More than a kind of flow control valve that the utility model provided has been carried out detailed introduction.Used concrete example among this paper the principle and the mode of execution of the utility model are set forth, above embodiment's explanation just is used to help to understand the method and the core concept thereof of the utility model.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (14)
1. a flow control valve comprises valve seat (1) and valve rod (2), and said valve seat (1) is provided with valve port (121) in its valve pocket, and said valve port (121) is opened or closed to said valve rod (2); It is characterized in that said valve port (121) is protruding upward vertically to have sleeve extension (122), said valve rod (2) in a tubular form; Offer the opening slot (3) of regulating the flow size on the circumferential side wall of one in the underpart of said sleeve extension (122) and said valve rod (2); And one in the underpart of said sleeve extension (122) and said valve rod (2) stretch into another person's inside or stretched out by it, so that interrupt being communicated with or making its connection of said opening slot (3) and said valve port (121).
2. flow control valve as claimed in claim 1 is characterized in that, offers said opening slot (3) on the circumferential side wall of said sleeve extension (122); Said sleeve extension (122) is provided with the first sealed step face (123) bottom that the position is lower than said opening slot (3), the lower end surface of said valve rod (2) and said first sealed step face (123) contact seal or disengage.
3. flow control valve as claimed in claim 2 is characterized in that, the said first sealed step face (123) is opened in the inside of said sleeve extension (122); The underpart of said valve rod (2) is stretched into the inside of said sleeve extension (122) or is stretched out by it.
4. flow control valve as claimed in claim 1 is characterized in that, offers said opening slot (3) on the circumferential side wall of the underpart of said valve rod (2); The underpart of said valve rod (2) is provided with the second sealed step face (21) that the position is higher than the top of said opening slot (3), the upper-end surface of said sleeve extension (2) and said second sealed step face (21) contact seal or disengage.
5. flow control valve as claimed in claim 4 is characterized in that, the said second sealed step face (21) is opened in the inside of the underpart of said valve rod (2); Said sleeve extension (122) stretch into said valve rod (2) the underpart inside or stretch out by it.
6. flow control valve as claimed in claim 5; It is characterized in that; The inside injection moulding of said valve rod (2) is formed with the injection molding body (22) that nut is installed; The lower end surface of this injection molding body (22) is higher than the top of said opening slot (3), and the lower end surface of this injection molding body (22) forms the said second sealed step face (21).
7. flow control valve as claimed in claim 5 is characterized in that, the underpart of said valve rod (2) is formed with the circumference expansion section (23) that external diameter increases, and the said second sealed step face (21) is located at the inside of said circumference expansion section (23).
8. flow control valve as claimed in claim 4 is characterized in that, the said second sealed step face (21) is opened in the outside of the underpart of said valve rod (2); The underpart of said valve rod (2) to stretch into said sleeve extension (122) inner or stretched out by it.
9. like each described flow control valve of claim 1 to 8, it is characterized in that said opening slot (3) is the V-type groove, and the big opening end of said V-type groove is towards the underpart or the said sleeve extension (122) of said valve rod (2).
10. like each described flow control valve of claim 1 to 8, it is characterized in that said opening slot (3) is a Y type groove, and the big opening end of said Y type groove is towards the underpart or the said sleeve extension (122) of said valve rod (2).
11. like each described flow control valve of claim 1 to 8; It is characterized in that; Said valve seat (1) is for dividing body structure; Comprise upper valve base (11) and lower valve base (12), said valve port (121) and said sleeve extension (122) all are opened on the said lower valve base (12), and said sleeve extension (122) stretches in the cavity of said upper valve base (1).
12. flow control valve as claimed in claim 11; It is characterized in that; Said flow control valve comprises that also first takes over (41) and second adapter (42), and said first takes over (41) is connected on the said upper valve base (11), and said second takes over (42) is connected on the said lower valve base (42).
13. flow control valve as claimed in claim 12; It is characterized in that; Said lower valve base (12) comprises pedestal (124); Said sleeve extension (122) is located at the upper end of said pedestal (124), and the circumferential side wall of said pedestal (124) is provided with interface (43), and said second takes over (42) is connected on the said interface (43).
14. flow control valve as claimed in claim 12 is characterized in that, said lower valve base (12) comprises pedestal (124), and said sleeve extension (122) is located at the upper end of said pedestal (124); Said pedestal (124) is sleeve shape, and its lower end surface is provided with interface (43), and said second takes over (42) is connected on the said interface (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202217414U CN202109047U (en) | 2011-06-27 | 2011-06-27 | Flow rate regulation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202217414U CN202109047U (en) | 2011-06-27 | 2011-06-27 | Flow rate regulation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202109047U true CN202109047U (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202217414U Expired - Lifetime CN202109047U (en) | 2011-06-27 | 2011-06-27 | Flow rate regulation valve |
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| Country | Link |
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| CN (1) | CN202109047U (en) |
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| CN102853128A (en) * | 2011-06-27 | 2013-01-02 | 浙江三花股份有限公司 | Flow control valve |
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| WO2013000389A1 (en) * | 2011-06-27 | 2013-01-03 | 浙江三花股份有限公司 | Flow-adjusting valve |
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