TWI433999B - The screw-type capillary module with restriction length being adjustable - Google Patents

Description

Spiral capillary module with adjustable throttle length

Hydrostatic bearing, throttle, capillary

Republic of China Patent Bulletin No. I279661, patent name: variable capillary grooved film throttle, date of publication: 2007/04/21, application date: 2005/10/28.

Referring to FIG. 1(a), a variable capillary channel film restrictor is composed of a base, a body, a casing and a flexible film, wherein the body has a metal film, a capillary groove and a voltage stabilizing chamber. The flexible film is fastened to the top side of the body, and forms a voltage stabilizing chamber in a recessed area on one side of the body. The film is assembled on the body and combined with the outer casing, and forms an adjusting chamber with the inner side groove of the outer casing. The seat has an injection flow path connecting the adjustment chamber and the pressure regulation chamber, and an outlet flow path connecting the pressure regulation chamber. When the flow pressure of the external load end is greater than the adjustment chamber, the flexible film will be flexed by force. The actuating gap is formed between the film and the capillary groove region of the body, so that the capillary groove opening covered by the film on the body becomes larger, and therefore, the fluid resistance through the capillary groove becomes smaller, so that the throttle device can change according to the pressure of the load end, and The flow resistance range is large, and the function of the outlet flow channel pressure of the feedback load end is achieved, adapting to the large load change of a single machine, and also having a wide range of pressure and flow regulation effects, and the single design is applicable to a wide range of machines.

Republic of China Patent Notice No. M261624, patent name: pressure feedback adjustment device, announcement date: 2005/04/11, application date: 2004/05/04.

Referring to FIG. 1(b), a pressure feedback adjusting device is connected to a load system, and an adjusting bolt is disposed in the adjusting device, and the initial pressure of the fluid output flow is changed by changing the degree of tightening of the adjusting bolt. The size can be adjusted for the flow of the fluid output to the load system by the various pressure feedback regulators to accurately adjust to the required pressure and flow.

A spiral type capillary can adjust its effective throttle length by using a screw. The spiral capillary is made at one end of the throttle plug, and the other end of the throttle plug is made into a curved surface. The contact end of the adjusting screw and the throttle plug surface is also made. When the conjugate surface is matched, the adjustment screw moves the throttle plug, thus changing the effective throttle length of the capillary. Each oil chamber needs to be equipped with a capillary restrictor.

According to the invention, when the independent module type device is arranged on the outer wall of the bearing, the oil supply inlet is in another opening of the outer wall of the bearing, and after the oil is supplied, the oil inlet hole is passed to the orifice, and the adjusting screw changes the effective throttle length of the spiral capillary tube. The oil supply regulates the pressure to the working pressure in the orifice.

The orientation of the invention mounted on the bearing seat can be on the side of the oil chamber, above or below the oil chamber, and in an oblique direction to the oil chamber, and any orientation and any relative position of the oil chamber can be installed. The outer shape of the bearing and the position of the oil chamber are determined.

When the throttle module of the present invention is more than one and combined in one body, the combined body is formed; the combined body has a uniform transverse through bolt hole, and the modules with the same number of bearing oil chambers are arranged together, and then the through bolt hole column is used for locking. , throttle outlet installation The oil pipe joint is connected with the oil pipe. The capillary tailstock has a through hole for oil supply in the lateral direction. An oil seal ring groove is arranged at the opening of the communication hole at both ends, and the oil supply hole between the two is sealed to prevent leakage. One of the modules seals the inlet of the communication hole with a plunger; the oil supply port of the other end of the module is provided with a fuel supply nozzle as an oil supply inlet, and the respective modules independently adjust the required throttle length, and the oil supply is connected through the communication hole. The oil inlet hole of the independent module passes through the throttle spiral groove to the outlet of the orifice, and the oil pipe is connected to the oil chamber inlet of the bearing housing.

The invention moves the adjusting screw through the spiral capillary of the throttle pin in the throttle hole, and the screw head and the plug head use two conjugate curved surfaces as the contact faces of the transmission, and the screw holes of the adjusting screw are driven by the two curved surfaces. The orifices of the throttle plugs are independent of each other, so that the throttle plugs are automatically centered, so that the orifices are made with sufficient precision and are not affected by the thread gap of the adjusting screws.

The composition of the present invention comprises a capillary seat 102, a throttle plug 104, a plug 105, a screw head 106, an adjusting screw 107, a fixing nut 108, an oil seal seat 109, a spiral capillary tube 110, a spring 111, and an oil seal ring 112, as shown in FIG. The spiral capillary tube 110, the oil seal seat 109, the throttle plug 104 and the plug head 105 are arranged in a line to be integrated, the oil seal seat 109 is formed with an oil seal ring groove, and the oil seal ring 112 is sleeved in the oil seal ring groove. The axial oil leakage is provided, and the screw head 106 is formed at one end of the adjusting screw 107, and the screw head 106 and the plug head 105 are formed into a conjugate curved surface for transmitting the adjusting screw 107 to push the spiral capillary 110 when the rotation advances, and the other end of the adjusting screw 107 There is an operating portion for rotation, and is mounted on the outer end of the capillary seat 102 with a fixing nut 108; the capillary seat 102 is made The hollow cylinder has a female thread 103 at one end for fixing the adjusting screw 107, and the other end is made into a smooth circular hole, and an integral part of the receiving spiral capillary 110 is moved therein, and a spring 111 is sheathed around the spiral capillary 110. When the adjusting screw 107 is rotated and retracted, it is bounced back to the spiral capillary tube 110; the capillary seat 102 is bolted to the bearing housing 201, and the lateral sealing is prevented by the oil sealing ring 101. The bearing housing 201 is provided with an orifice 202 and an oil chamber. 203, the oil inlet 204, the oil supply inlet 205, wherein the orifice 202 communicates with the hollow passage of the capillary seat 102, and the oil supply nozzle 2051 is disposed at the outer end of the oil supply inlet 205 for connecting the outer tube for supplying oil. The oil is throttled from the oil supply inlet 205 through the oil inlet 204 to the orifice 202, and the length of the spiral capillary 110 in the orifice 202 is throttled to allow the oil supply to regulate the pressure to the working pressure in the orifice 202.

In the outermost state, the spiral capillary 110 does not block the oil inlet hole 204 at all, as shown in FIG. 3(a); the adjusting screw 107 pushes the spiral capillary tube 110 to the innermost condition, and blocks the oil in the maximum throttle length. Hole 204 is shown in Figure 3(b).

The embodiment of the present invention is mounted in a separate module type on various bearing housings 201. As shown in FIG. 4, it is bolted to the outer wall of the bearing housing 201. Each oil chamber 203 must have a corresponding device and a mounting orientation. The side of the oil chamber 203 may also be determined above and below the oil chamber 203, and in an oblique direction to the oil chamber 203 and in any orientation, depending on the outer shape of the bearing housing and the position of the oil chamber 203, each mold The groups each have an oil chamber, a separate oil inlet 204, and a separate oil supply inlet 205 and a separate fuel supply nozzle 2051 mounted to the outer end of the oil supply inlet 205.

An embodiment in which more than one number of the inventive modules are combined in one piece, for example As shown in FIG. 5, FIG. 5(a) is a front view showing the present invention in which the through bolt studs 208 are combined. The end of the capillary 110 is formed with a lateral oil supply through the communication hole 206, and the communication hole 206 of each module. A ring groove of the oil seal ring 101 is disposed at the opening of the two ends, and the oil inlet hole 204 is perpendicular to the communication hole 206, so that the oil supply enters the throttle hole 202, and the combined module is laterally formed with a bolt column for fixing the bolt column. The hole 211, after arranging the plurality of modules together, is locked and fixed by the fixing bolt column 208, and the oil supply hole between the two is mounted with the oil sealing ring 1011 to prevent leakage; the module of one of the two ends is the plunger 209. The opening of the communication hole 206 is sealed, and the other end of the module device supply nozzle 2051 is used as the oil supply inlet 205. The respective modules independently adjust the throttle length required for the spiral capillary tube 110, and the oil supply is independent of each module via the communication hole 206. The oil inlet hole 204, through the throttle spiral capillary 110 to the outlet of the orifice 202, the orifice 202 to the throttle outlet 210, the oil pipe joint 207 is installed, and the oil pipe is connected to the oil chamber 203; FIG. 5(b) a side view showing the bolt post holes 211 used in the assembly of the module, and Vias 206 associated with the position of the orifice 202, into the hole 204 in communication with both.

The bolt head 105 of the throttle plug 104 and the screw head 106 of the adjusting screw 107 are driven by a conjugate curved surface contact, except for the convex spherical surface 114 of the plug head 105 and the concave spherical surface 113 of the screw head 106, there is an implementation as shown in FIG. For example, as shown in FIG. 6(a), the concave spherical surface 113 is used in the throttle plug 104, and the convex spherical surface 114 is adjusted by the screw 107. As shown in FIG. 6(b), the throttle plug 104 and the adjusting screw 107 are all the same. The concave spherical surfaces 1131, 1132, the two concave spherical surfaces 1131, 1132 jointly contact a ball 115, and are driven via the ball 115. Through the transmission of the conjugate curved surface, the screw holes of the adjusting screw 107 and the hole seat of the throttle plug 104 are independently independent, so that the throttle pin 104 is automatically centered, so that the throttle pin 104 is automatically centered. The orifice 202 is made with sufficient precision and is not affected by the thread gap of the adjusting screw 107.

101, 1011‧‧‧ oil seal ring

102‧‧‧ capillary seat

103‧‧‧Female thread

104‧‧‧ throttle plug

105‧‧‧ tying head

106‧‧‧ screw head

107‧‧‧Adjustment screws

108‧‧‧Fixed nuts

109‧‧‧ Oil seal seat

110‧‧‧ spiral capillary

111‧‧‧ Spring

112‧‧‧ oil seal ring

113, 1131, 1132‧‧ ‧ concave spherical surface

114‧‧‧ convex spherical surface

115‧‧‧ ball

201‧‧‧ bearing housing

202‧‧‧ orifice

203‧‧‧ oil chamber

204‧‧‧Inlet hole

205‧‧‧ oil supply entrance

2051‧‧‧ nozzle

206‧‧‧Connected holes

207‧‧‧Tube connector

208‧‧‧ bolt column

209‧‧‧Plunger

210‧‧‧ throttle exit

211‧‧‧ bolt column hole

Figure 1 (a) Prior art variable capillary groove film restrictor construction diagram

(b) Prior art pressure feedback adjustment device configuration diagram

Figure 2 Number of adjustable capillary length spiral capillary modules

(a) front view

(b) Top view

Figure 3. Spiral capillary with adjustable throttling length

(a) The case where the throttle length is the smallest

(b) The case with the largest throttling length

Figure 4 Capillary installation in the oil chamber

(a) The oil chamber is directly above the capillary

(b) The oil chamber is directly below the capillary

(c) The oil chamber is inclined parallel to the capillary

(d) The oil chamber is inclined downward parallel to the capillary

(e) The oil chamber is tilted upwards

(f) The oil chamber is inclined downward

(g) the oil chamber is perpendicular to the capillary above

(h) The oil chamber is perpendicular to the capillary down

Figure 5 Horizontally arranged combination module

(a) front view

(b) side view

Figure 6 Drive description of capillary adjustment throttle length

(a) concave spherical surface and convex spherical surface

(b) Two concave spherical surface spheres

101‧‧‧ oil seal ring

102‧‧‧ capillary seat

103‧‧‧Female thread

104‧‧‧ throttle plug

105‧‧‧ tying head

106‧‧‧ screw head

107‧‧‧Adjustment screw

108‧‧‧Fixed nuts

109‧‧‧ Oil seal seat

110‧‧‧ spiral capillary

111‧‧‧ Spring

112‧‧‧ oil seal ring

201‧‧‧ bearing housing

202‧‧‧ orifice

203‧‧‧ oil chamber

204‧‧‧Inlet hole

205‧‧‧ oil supply entrance

Claims (4)

A spiral capillary module with adjustable throttle length, which comprises a capillary seat, a throttle plug, a bolt head, a screw head, an adjusting screw, a fixing nut, an oil seal seat, a spiral capillary tube, a spring, and an oil seal ring; The spiral capillary tube, the oil seal seat, the throttle plug and the bolt head are arranged in a line to be integrated into one line, the oil seal seat is formed with an oil seal ring groove, and the oil seal ring is sleeved in the oil seal ring groove as an axial oil leakage, and the screw end is adjusted. A screw head is provided, and the screw head and the bolt head are formed into a conjugate curved surface for transmitting the adjustment screw to push the spiral capillary when the rotation is advanced, and the other end of the adjustment screw is used to rotate the operation portion, and the fixing nut is mounted on the capillary seat The outer end of the capillary; the capillary seat is made of a hollow cylinder, one end is provided with a female thread for fixing the adjusting screw, and the other end is made into a smooth circular hole, and the whole of the spiral capillary is moved therein, and the outer periphery of the spiral capillary is sheathed The spring is used to adjust the screw back to the spiral capillary when the screw rotates back and forth; the capillary seat is bolted to the bearing seat, and the oil seal ring prevents the lateral side leakage, the bearing The upper side is provided with an orifice, an oil chamber, an oil inlet hole and an oil supply inlet, wherein the throttle hole communicates with the hollow passage of the capillary seat, and the oil supply nozzle device is disposed at an outer end of the oil supply inlet for connecting the outer tube for supplying oil, The oil supply is throttled from the oil supply inlet through the oil inlet hole to the orifice, and the length of the spiral capillary tube in the orifice is throttled, so that the oil supply adjusts the pressure to the working pressure in the orifice; each module corresponds to one oil chamber To adjust the pressure of the oil chamber, the modules are installed in the bearing housing in an independent manner, and have independent oil inlet holes, oil supply inlets and oil supply nozzles; when the modules are combined, the combined module forms, Further, the bolt hole, the through hole and the oil inlet hole are formed in the lateral direction of the module, and the oil inlet hole is perpendicular to the communication hole and connected to the orifice of each module. When the modules are combined, Share the same An oil inlet, oil supply inlet and fuel supply nozzle; each module has its own separate oil outlet. According to the "Spiral Capillary Module with Adjustable Throttle Length" as described in the first paragraph of the patent application, a combination of various shapes of bearing housings is mounted in a separate module type, which is bolted to the outer wall of the bearing housing, each An oil chamber must correspond to a module. The invention is mounted on the bearing housing in a separate module type. Each module has an independent oil inlet, an independent oil supply inlet and an outer end of the oil supply inlet. Independent fuel supply; the orientation of the invention can be mounted on the sides of the oil chamber, above and below the oil chamber, in an oblique direction to the oil chamber, and in any orientation. According to the "scalable capillary module with adjustable throttle length" described in the first paragraph of the patent application, the present invention can use a through bolt column to combine more than one module into one body, and each module has its own independent spiral. The capillary tube has a lateral oil supply through the communication hole at the tail end, and the communication hole of each module is provided with a ring groove of the oil seal ring at the opening at both ends thereof, the oil inlet hole and the communication hole are perpendicular, and the communication hole and the throttle hole are The oil inlet holes are connected to make the oil supply into the throttle hole, and the combined module is laterally formed with a bolt stud hole for fixing the bolt column. After the plurality of modules are arranged together, the bolts are locked and locked together. The oil supply hole between the two oils is sealed with a sealing oil ring to prevent leakage; the module at one of the two ends of the assembly body seals the opening of the communication hole with a plunger, and the other end of the module device supplies the oil nozzle as an oil supply inlet. The module independently adjusts the throttling length required for the spiral capillary, and supplies the oil through the communication hole to the independent oil inlet hole of each module, and through the throttle spiral capillary to the orifice The outlet, the orifice to the throttle outlet, the oil pipe joint is installed, and the oil pipe is connected to the oil chamber. According to the "spiral capillary module with adjustable throttle length" according to the first aspect of the patent application, the conjugate surface of the screw head of the throttle plug and the screw head of the adjusting screw is: the plug head is a convex spherical surface The screw head is a concave spherical surface; and conversely, the plug head is a concave spherical surface, and the screw head is made into a convex spherical surface; in addition, the bolt head and the screw head are both formed into a concave spherical surface, and the two are driven by the contact of the sphere; The driving of the curved surface makes the adjusting screw and the throttle plug independently of each other in the hole, and the adjusting screw rotates forward or backward, and the throttle plug does not rotate and only advances and retreats following the translational movement of the adjusting screw.