TWI228168B - Improved structure of pressure relief valve - Google Patents

Abstract

The present invention provides an improved structure of pressure relief valve, comprising a main body having an inlet end to which can be combined with a check device for controlling the fluid to enter; a pressure relief device provided at a peripheral predetermined location of the main body which includes a guiding tube having a passage communicating with interior of the main body, and an opening communicating the passage with the main body is provided with an arc chamfer part and a stop part. The pressure relief device further includes a valve tappet slidably inserting in the passage. The valve tappet has a head part with outer diameter greater than the diameter of the passage and a body part with outer diameter smaller than the diameter of the passage, and the head part is provided with a groove for mounting a sealing ring. The valve tappet can effectively achieve the efficacy of preventing the fluid leakage by abutting the head part against the stop part and the sealing ring against the arc chamfer part.

Description

1228168

[Technical field to which the invention belongs] The present invention mainly discloses an improved structure of a pressure relief valve. [Prior technology] The quality phase of the meeting will be called the crescent moon *. The requirements have also changed from "recognizing the soil; ^ Tian 雒, becoming quite delicate. Only the old-selling Xinwei Modern Co., Ltd. of You Youling, yak 弋 a '" needs to continuously or innovate in order to meet. Lost 3 The 'shown' is a cross-sectional view of a conventional pressure relief valve structure / οΠ The known pressure relief valve system includes-body 70,-non-reverse device = set 901, the body 70 has-the input end and the stop One of the inverse devices 80 can be combined with the main body 70): ”and here the other end can be connected to a fluid input device (not shown in the figure, & = 1 body via the anti-reverse device 80 and (Optionally introduced into the body 70) The output end of the body 70 can be connected to a pressure gauge (not shown in the figure) A hole is connected at the predetermined position on the periphery of the body 70 to communicate with the inch and the f 71, and the pressure relief device 90 can be combined with the hole 71 to control whether the fluid in the body 70 passes through the hole 7 1 bubble out; ^ # 93 Yutai 骅 7n, ~ 包括 # 93 mainly includes the head 94 with an outer diameter larger than the channel 92 and the stopper 91, and an outer diameter smaller than the channel 92 and is inserted in the guide ring. The ancient part 95, and the body part 95 is at a predetermined position near the head 94, and the Ιί:! 96 'and the groove 96 are provided with a 0-shaped leak-proof washer 97, which is far from one end of the head 94 , Can be set with a spring 98, and

Η I% · 1228168 V. Description of the invention (2) = ^ a pressing member 99; thereby, in a general state, when the user applies force to the official, 93 is displaced in the body 70, the magic washer 97柃 93 is displaced without abutting against the wall of the channel 92, and the body k of the body 70 can be discharged from the anti-drain device 90; and the design of such conventional pressure relief valve still has at least the following defects, Straight ^ · The pressure relief device 90 of the conventional pressure relief valve is closed to the pipe wall, so when the stem 93 faces = stays in the original position, it is subject to the stem 93 and the guide j JJ. The master sM has achieved the anti-leakage function that it should have: (second picture),:! What is not to adjust the pressure relief device of the conventional pressure relief valve is to continue to talk about the leakage washer 97 series 懕 麟 μ = = broken is also discharged, due to the shape, but the cumulative deformation exceeds the critical value ::: It produces variable effects, which can be done by this way; KK stopper can't effectively reach the stoppage-good design. The structure of the phase needs to be improved, but not in view of the above-mentioned conventional structure "improved structure of the pressure relief valve", which is passed, the inventor has invented a point. ^ 'It can overcome all the shortcomings of the above-mentioned conventional products] Summary of the invention "The improvement of the pressure relief valve is based on the conventional valve stem ^^ The technical problem to be solved lies in! 228168 V. Description of the invention ( 3) The groove in the valve stem is easy to be pinched on the valve, it is easy to deform and easy to be guided by the guide tube, and the stem and the guide tube are easily missing, and the channel leaks. The hair has an input end, and the input A pressure relief device, a group device; and the pressure relief valve stem part, which can be described by an arc angle part and includes a guide tube, and the device whose passage communicates with the body further includes a diameter comparison There is a head on the outer head, and the other related to the purpose is provided with a recess to effectively prevent it. The advantages and advantages of this figure are more obvious. Therefore, it cannot be synchronized with the valve stem. In addition, the stopper ring makes the fluid in the conventional pressure relief valve extremely difficult to achieve better efficiency. Structure ", which includes a body, the end of which can be combined with a non-return to control fluid entry, is arranged at a predetermined position on the periphery of the body, the bubble has a channel port communicating with the body, and an arc angle is provided And the stopper, which slide through the valve stem in the channel, and the head and the outer diameter of the channel are smaller than the body groove of the channel for the combination of a leak-proof washer. The drain washer abuts the effect of the round stop fluid leakage. The novel features of the invention will be described in detail from the following [Embodiments] The technology, handy examples, and drawings that are used in the present invention are described below in conjunction with the drawings: The structure, 1 is not the number selected for the present invention. The second structure is for illustrative purposes only. 'In the patent application, it is not subject to the first picture.-What is not' is the three-dimensional aspect of the present invention. Appearance. Referring to Figure 1228168 V. Description of the Invention (4), the pressure relief valve system includes a body 10, a non-return device 20, and a bubble pressure device 30, wherein the body 10 system has an input terminal and an output. One end of the anti-reverse device 20 can be coupled to the input end of the body 10, and the other end can be connected to a fluid input device (not shown), and can pass fluid through the non-return device 2 0 It is selectively introduced into the body 10, and the output end of the body 10 can be connected to a pressure gauge (not shown in the figure). In addition, the pressure relief device 30 is connected and connected to the periphery of the body 10 At a predetermined position, and by controlling the axial displacement of the bubble pressure device 30, the fluid in the body 10 can be guided to the pressure relief device 30 and bubbled out. Please refer to the second and third figures, which are an exploded perspective view and a cross-sectional view of the present invention. Referring to the two figures, the body has a first end and a second end which communicate with each other, and the first end is a fluid input end, and a channel is formed between the first end and the first end. The first end of the body 1 Q can be inserted and combined with the anti-reverse device 20, and the first end further includes an external thread 1 2 ′, which can be connected to a fluid input device with an internal thread (not shown in the figure). (Shown) phase, and the fluid can be introduced into the channel from the first end. The first end of the valve stem 10 can be screwed into a pressure gauge (not shown), which can measure the flow of fluid. In addition, the body 10 is provided with a hole 13 communicating with the channel 11 at a predetermined position on the periphery, and the hole 13 is provided with an internal thread 14 for the pressure relief device 30 screw. The inverse device 20 includes a first guide tube 21, a first valve stem 22, a first leak-proof washer 23, a first elastic member 24, and a stopper 25. The first guide The tube 21 has a first end and a second end, and the S end of the two ends is opened to form a channel 2 11 and the channel 2 11 is closer to the inner diameter than the first end.

1228168

The first end of the first guide tube 21 is an open port for setting the stopper 25, and the stopper 25 and the inner tube wall have a large diameter and a small inner diameter near the second end. The gap through which the fluid can pass, the second end of the first guide tube 2 丨 is provided with an external thread 2 1 2 for screwing in the body with internal thread 丨 5 丨 channel i 1, and the channel 21 1 is provided with an arc-shaped corner portion 21 3 at the opening of the second end, and the transportation 2 11 can be in a first-class shape at the opening near the second end, and thus a ring-shaped stop portion 2 1 4 is formed The first valve stem 22 includes a head 221 and a body 222, and the body 222 is provided with a flange 223 at one end of the near head σ 卩 221, and the body 222 is different from the other end of the flange 223 An external thread 224 is provided. A groove 22 5 is formed between the flange 223 and the head 22 1. The groove 22 5 can be sleeved and combined with the first leakage washer 23. The body 2 22 can be sleeved with the first An elastic member 24 can be axially reciprocated in the channel 211 of the above-mentioned guide D21, and can be screwed with the limiting member 25 by the external thread 224. The first valve rod 22 is passed through Channel 211 of the first guide tube 21 At this time, the head 221 can abut against the stopper portion 214 and stop the first leakage washer 23 at the arcuate corner portion 213, so that it cannot be sunk into the channel 2 1 1; the pressure relief device The 30 series includes a second guide tube 31, a second valve stem 32, a second anti-leak washer 33, a second elastic member 34, and a control member 35, of which 1 the second guide tube 31 has a first "End and the second end, and a passage 311 is formed between the two ends, and the passage 311 has a smaller inner diameter near the first end and a smaller inner diameter near the second end, and the second guide tube The first end of 31 is two open ports, and the second end is provided with an external thread 312 for the second guide lu 31 to be screwed into the body 10 hole 13 with the internal thread 14, and the channel 311 is at 1Η1 _ Page 9 1228168 V. Description of the invention (6) The opening at the second end is provided with a circular arc corner 3 丨 3, and the channel 3 丨 1 can be in a class shape near the opening at the second end, and Therefore, a ring-shaped stop portion 314 is formed; the second valve stem 3 2 includes a head portion 3 2 1 and a body portion 3 2 2, and the body portion 322 is provided with a flange 3 at one end of the near head portion 321. 23, and body 322 is different from convex The other end of the edge 323 is provided with an external thread 324, and a groove 3 2 5 is formed between the flange 323 and the head 32 1, which is used for the second leak-proof washer 3 3 to be fitted and combined] The 3 2 2 series can be sleeved with the second elastic member 3 4, and can be axially reciprocated in the channel 311 of the above-mentioned first guide officer 31, and can be externally threaded 3 2 4 to communicate with the limiting member 3 5 When the second valve stem 32 is passed through the passage 311 of the second guide pipe 31, the head portion 321 can abut against the stop portion 3 14 and make the second leakage washer 33 It stops at the arc corner 313, so that it does not sink into the channel 3 1 1. ®Refer to the fourth figure 'for a schematic diagram of the adjustment state of the anti-reverse device of the present invention: Referring to this figure, when the stopper 25 of the anti-reverse device 20 is stressed, the first odd cup 22 is moved toward the body 10 first. When the end is displaced, the head 221 of the first valve stem 22 will be separated from the abutting relationship with the stopper 214 of the first guide pipe 21, and the first stopper washer 23 will also be separated from the arcuate corner 2 The pressure of 13 can flow into the body 1 through the channel 211 of the first guide tube 21, and the pressure value can be read by using a pressure gauge combined with the second end of the body 10. ; Please refer to the fifth figure as a whole, which is a state adjustment diagram of the pressure relief device of the present invention. Referring to the figure, when the pressure value displayed by the pressure gauge exceeds the resolution of the device ^ ^, the user can press the control member 35 to move the second valve stem 32 toward the inside, and thus make the head 3 23 and second leakage washer 33

1228168 V. Description of the invention (7) can be separated from the abutment relationship with the stop portion 3 1 4 and the arc corner portion 3 13 respectively, and

The fluid can be discharged through the channel 3 i 1 of the second guide pipe 31, and the pressure of the fluid can be reduced; It is worth noting that the second leakage washer 33 of the present invention is sleeved on the second The groove 3 2 5 of the valve stem 3 2 can be restricted to be positioned between the head 321 and the flange 323. Although a high-pressure fluid continuously enters the body, at most, only the first The two valve rods 32 are pushed in the direction of the control member 35 and therefore the head 323 is first pressed against the stop portion 314, and then the second 34 is pressed against the rounded corner portion 313. Therefore, the drag ring does not cause the first ... The ring 34 is separated from the groove 32: the pressure relief device 30 performs pressure relief operation; it will not affect the operation. In addition, the check valve is installed in the same manner, so it is not used here = the household "achieves the effect also with the pressure relief device 30 It can be concluded that the present invention has the following advantages. It is located in the recess of the head of the valve stem, "偁", the leakage washer due to the sleeve has a high pressure fluid; break into :, limit positioning on the head of the valve stem On the part, the second valve stem is in the direction of the control member, and at most, the pressure relief device part is first pressed against the second guide bow. In this way, the top of the head can be fitted to the corner of the arc, the stopper, and the second leak washer can be released from the groove against the second leak washer, and the increase in fluid pressure will not cause the The first line will not fall into the second guide tube ^ In this way, the second leakage washer will be deformed, and will not be affected. = = Within the gap between the two valve stems, the invention will not result in a better one. Pressing and pressing to perform pressure relief operations, so the efficiency and efficiency.

Page 11 1228168 V. Description of the invention (8) The present invention has been described with reference to the detailed drawings of the preferred embodiment. Those skilled in the art can derive many variations from the preferred embodiment without departing from the spirit of the invention. Therefore, the preferred embodiment does not limit the scope of the present invention. The scope of the invention is defined in the scope of patent application.

Page 12, 1228168 Brief description of the drawings [Brief description of the drawings] The first figure is a three-dimensional appearance of the second figure of the present invention; the third figure, the fourth figure, the fifth figure, the sixth figure, and the seventh figure are The three-dimensional aspect of the invention is divided into cross-sectional views of the present invention; °, ί: Ming non-reverse device adjustment status = clear shallow pressure device adjustment status n pressure valve structure cross-sectional view, α pressure relief valve pressure relief device schematic diagram; ; The whole state diagram. Brief description of the component symbols (10 body 13 holes 20 non-reverse mounting of the present invention 21 2 outer screw 22 first valve 223 flange 23 first ± 3 0 Ά 墨 翔 置 31 2 outer thread 3 2 second valve stem 323 flange 33Secondary anti-leakage washer (conventional, grooved rod 11 channel 14 internal thread 21 first guide 21 3 round fox angle 2 21 head 224 externally threaded pipe section loop 2 4 first elastic member 31 second guide Lead tube W1 3 Arc corner 321 head 324 external thread 34 second elastic member 1 2 external thread 1 5 internal thread 2 11 channel 21 4 stopper 222 body 225 groove 2 5 stopper 3 11 channel 31 4 Stopper 322 Body 325 Groove 3 5 Control element 1228168 Brief description of the figure 70 Body 71 80 Check device 9 0 Pressure relief device 91 Guide tube 92 channel 9 3 Valve stem 94 Head 95 Body 96 Groove 9 7 Anti-drain washer 98 Spring 9 9 Pusher _

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Claims (1)

1228168 VI. Scope of patent application1. An improved structure of a pressure relief valve, which includes a body, a pressure relief device, the system has a first end and a second end, the device is connected to the first end, and The fluid can be controlled to enter, and the leakage system is combined with a predetermined position on the periphery of the body. When the fluid in the body is under pressure, the fluid can be discharged by the pressure relief device to reduce the pressure. And, the body part is formed with a fluid leakage from the stopper and the stopper. 2 · where the pass 3 · where the device is combined with the 4 · pressure device, which is guided to the body, the body and the head groove, the valve 'and the effectiveness of the impact part as the crossing application is as the application If the pressure person applies for a port part that includes a guide tube system, the stop rod may be provided between the stopper and the stop pad, and the stopper, a guide tube with a valve rod connected to the system A stopper is provided, the elastic member is sleeved and a flange is worn, and the convex washer is combined; in an operating position, a fluid ring that is pressed against the passage opening and an operating position is in contact with the valve stem and makes The elastic stem of the valve stem system can be extended by sliding on the edge and the head can use the protrusion, and when it can be reached, the protrusion can be provided with a rounded corner portion as described in the first paragraph of the guiding patent range, thereby The leak end described in the first item of the patent scope is the fluid wheel man. ^ M 汉 入 饼, and the second end of the first-class body can be connected to the pressure valve to improve the leakage washer, the pressure valve to improve the pressure gauge to prevent reverse When the anti-back pressure device is too large, And abut against the edge line having a first passage between the inner edge of the lines can be prevented from escape pipe structure by a top. Structure, body input measurement book Patent No. 11-1228168 6. Patent application hole, and the hole is available at the predetermined position on the periphery of the body, the pressure relief device is inserted and combined. 5 The pressure relief valve improvement as described in item 1 of the declared patent range is 0 Shi Weishan, wherein the guide pipe system has a first and second valve improvement structure, which is fitted to the peripheral edge of the body, and the second end is inserted with a knot energy. Drive the valve stem; move the part, and close it, and apply force to the control part. 6. An improved structure of the pressure relief valve, its placement and pressure relief device, this system has the following: The anti-reverse device is connected to the first end and the younger end. The non-reverse device is connected to the first position. The fluid pressure control device is controlled. When the internal fluid pressure is too large: the pressure device discharges the fluid to reduce the force of force. Its characteristics ^ stop leaks the channel connection and the body, and the body is formed to hunt the stop fluid flow away from the person. The main part, the part and the head, a groove, the part, and the incorporated stop part include a guide tube having a port connected with a guide tube body, and the body part can be provided between the body part and the part. The valve stem acts on the first anti-leakage pad, and the stopper is sleeved with a spring to release the flange An operation position ring is looped against the valve stem to make the body, a valve stem, an elastic member, and a passageway in the body, and the stopper portion 'the valve stem has a head piece and penetrates and slides. "Moved in the channel" and the flange is connected with the head; when set, the flange can be pressed against the channel opening, and when the second operation position can be prevented, the fluid in the flange can be guided by Inflow 1228168 6. Scope of patent application 7 · If the channel 8 is used. · If the body device is combined, the pressure inside the body 9 · If the body is the pressure relief device 10 ·, where the guide is connected to the first end piece of the body tube And the one that can drive the patent application is the one with the first end of the patent application and the power of the body. If the applicant applies a patented peripheral edge pre-positioned inserting combination, if the patent application pipe has an input end, it can also be improved with the pressure relief valve described in item 6 of the valve stem's position, and the angle section can be used for The leak-proof washer abuts. The improved structure of the pressure relief valve described in item 6 is a fluid input end, and a pressure gauge can be connected to a second end of a fluid input to measure the improved structure of the pressure relief valve described in item 6 A hole is provided at the system, and the hole system can be used for the first end and the second end of the improved structure of the pressure relief valve described in item 6 of the range. The second end is inserted and the body of the valve stem can be worn. For this guidance, a limit piece is combined, and the force can be used to limit the displacement. « Page 17