TWM532532U - Right angle valve - Google Patents

Description

Right angle valve

This creation relates to a right angle valve, especially a right angle valve that shields the return spring when the gas circulates, to prevent foreign matter from sticking to it, and to avoid an accidental movement.

As shown in Figure 1, it is a cross-sectional view of a conventional right angle valve. Conventional right angle valves are used to regulate or isolate the flow of gas inside the vacuum system. The right angle valve generally includes a three-way pipe body 1, a piston 2, a control rod 3, and a valve plate 4. The piston member 2 is movably disposed at one end of the three-way pipe body 1, and one end of the control rod 3 is connected to the piston 2, and the other end is connected to the valve plate 4 for controlling the valve plate 4 to close or open the three-way pipe body 1. In addition, a return spring 5 is provided between the valve plate 4 and the control rod 3 to provide the piston 2 resetting force.

When the piston 2 is actuated by the air pressure, the piston 2 drives the control rod 3 to generate displacement, which causes the valve plate 4 to open the communication of the three-way pipe body 1. At this time, the return spring 5 is in a compressed state, and when the air pressure is removed, the piston 2 is removed. By restoring the elastic force of the reed 5, the valve plate 4 can be closed again to the three-way pipe body 1 for the purpose of intake and exhaust, wherein in the process of intake and exhaust, the gas is inevitably entrained with impurities and foreign matter. Or dust, and easy to be stuck on the return spring 5, which causes the return spring 5 to not operate smoothly, resulting in a problem of inaccurate reset.

In order to solve the above problems, the present invention discloses a right angle valve which, when the gas is circulated, is shielded by a shielding means to shield the return spring to prevent the foreign matter from being locked and the reed is prevented from occurring.

In order to achieve the above object, the present invention provides a right angle valve, comprising: a valve body having a chamber and a first air tube and a second air tube respectively communicating with the chamber; a fixing member fixed to the valve The main body has a joint end extending into the chamber; a return spring having one end coupled to the joint end and the other end coupled to a closure member for closing the inner end of the first air tube; and an upper cover fixed to the valve The body is different from one end of the first air pipe; a piston member is slidably disposed inside the upper cover, the end of the piston member is coupled to the closing member; and a shielding means for driving the closing member away from the inner end of the first air pipe when the piston member drives the closing member When the gas is circulated, the return spring is shielded from being exposed to the flowing gas, thereby preventing the foreign matter from being caught and returning to the reed.

In the present invention, the shielding means includes a sleeve having a fixed end and a free end, the fixed end being fixed to the fixing member, and the free end is surrounded between the joint end of the fixing member and the return spring.

In this creation, the fixed end is locked to the fixing member.

In the present creation, when the closure is completely away from the inner end of the first trachea, the closure abuts against the free end.

In the present creation, the screening means includes a bushing that is affixed to the closure and surrounds the return spring.

In the present invention, the upper cover is provided with an inner space, and the piston member has a piston body slidably disposed in the inner space, and the upper cover is adjacent to the valve body and is provided with an air inlet portion communicating with the inner space.

In the present creation, the piston body is coupled to a control rod that passes through the fixture and is coupled to the closure.

In the present invention, the piston body is recessed with a spring groove, the upper cover has a closed end, and a spring is disposed between the spring groove and the closed end.

In the present creation, a spring is provided in the spring groove for inserting the spring.

In the present creation, the closed end of the upper cover has a muffler, and the inner end of the muffler is connected to the inner space.

In the present creation, a heater is further included for heating the valve body.

In the present creation, a heat insulating sheet is further disposed between the valve body and the upper cover.

Therefore, the creation of the return reed can be covered in the sleeve by the shielding means when the closing member is opened to prevent the foreign matter or impurities in the circulating gas from being caught on the return spring. Thereby avoiding the situation in which the reset reed produces an inaccurate action.

In addition, the present invention heats the valve body through the heater, so that when the first gas pipe is opened, tiny impurities or foreign matter in the gas inside the valve body can be burned at a high temperature to prevent foreign matter from being stuck or accumulated in the pipeline. The problem arises.

For the convenience of the description, the central idea expressed in the above-mentioned creation content column is expressed by a specific embodiment. The various items in the embodiments are set forth in proportion to the description and not in the

Referring to Figures 2 to 4, the right angle valve 100 of the present invention includes:

A valve body 10 is a three-way pipe body and has a chamber 11 and a first air pipe 12 and a second air pipe 13 respectively communicating with the chamber 11. The first air tube 12 and the chamber 11 are coaxially disposed, and the first air tube 12 and the second air tube 13 are at right angles.

A fixing member 20 is a cylindrical structure and is fixed to the end of the valve body 10 different from the first air tube 12, and the fixing member 20 has a coupling end 21 extending into the chamber 11.

A returning reed 30 is coupled at one end to the joint end 21 of the fixing member 20 and at the other end to a closing member 31 for closing the inner end of the first air tube 12 for selectively opening or closing the first air tube 12 and the cavity The chamber 11 is connected.

An upper cover 40 is fixed to the valve body 10 at one end of the first air tube 12 and on the outer side of the fixing member 20. The upper cover 40 is provided with an inner space 41, and the upper cover 40 is adjacent to the valve body 10 and is provided with an air inlet portion 42 having an air inlet 421 communicating with the inner space 41, and the air inlet 421 is for connecting an external air source to The air source is sent to the inner space 41. In addition, the upper cover 40 is provided with a closed end 43 at one end of the air inlet portion 42. The closed end 43 has a muffler 44. The inner end of the muffler 44 communicates with the inner space 41 for balancing the pressure inside and outside the upper cover 40. Further, the upper cover 40 is further provided with a positioning groove 45 at the closed end 43. The two ends of the positioning groove 45 communicate with the inner space 41 and the inner end of the muffler 44, respectively.

A piston member 50 is slidably disposed inside the upper cover 40. In the present invention, the piston member 50 includes a piston body 51 slidably disposed in the inner space 41, and the piston body 51 is coupled to a control rod 52. The control rod 52 passes through the air inlet portion 42 and the fixing member 20 to terminate the end portion thereof. The member 31, when the piston member 50 is actuated, drives the closure member 31 to selectively open or close the first air tube 12. In addition, the piston body 51 is axially recessed with a spring groove 53, and the spring groove 53 is received by a spring 54 so that the spring 54 is disposed between the spring groove 53 and the positioning groove 45 of the closed end 43 to provide a piston. The reset capability of the piece 50. Moreover, the spring slot 53 is further provided with a positioning member 55. The positioning member 55 is substantially T-shaped for being inserted into the spring 54 for positioning.

The present invention further includes a masking means for obscuring the return spring 30 when the piston member 50 urges the closure member 31 away from the inner end of the first air tube 12 to circulate the gas, thereby preventing the return spring 30 from being exposed to the flowing gas. In order to prevent dust and foreign matter in the gas from being stuck on the return spring 30, the ability to act on the return spring 30 is avoided.

The shielding means includes a sleeve 60. The sleeve 60 has a fixed end 61 and a free end 62. The sleeve 60 is sleeved on the fixing member 20, and the fixing end 61 is fixed to the fixing member 20 by screws or bolts. The free end 62 surrounds the joint end 21 of the fixing member 20 and the return spring 30. In addition, the outer diameter of the free end 62 of the sleeve 60 is substantially the same as the outer diameter of the closure member 31 such that when the closure member 31 is completely away from the inner end of the first air tube 12, the closure member 31 is different from the inner end of the first air tube 12. The side abuts against the free end 62 to form a stop state, and the closure member 31 closes the free end 62 of the sleeve 60, so that the return spring 30 is completely retracted into the sleeve 60 for shielding and protection.

Furthermore, the present invention further includes a heater 70 for performing contact or non-contact heating on the valve body 10, and transmitting the small impurities in the gas flowing through the valve body 10 when the first air pipe 12 is opened. Foreign matter can be burned at high temperatures, avoiding the problem of foreign matter sticking or accumulating in the pipeline.

In addition, a heat insulating sheet 71 is disposed between the valve body 10 and the upper cover 40 to prevent the heater 70 from transmitting heat energy to the upper cover 40 when the valve body 10 is heated, thereby preventing the improper action of the piston member 50 and causing air leakage. situation.

As shown in FIG. 3 and FIG. 4, the action of the piston member 50 to open the first air tube 12 is illustrated. As shown in FIG. 3, when the piston member 50 is externally introduced with high-pressure gas, the piston body 51 is pushed upward. The displacement of the closed end 43 of the 40 is displaced, and the piston body 51 can drive the closing member 31 away from the inner end of the first air tube 12 by the control rod 52 to make the first air tube 12 and the second air tube 13 conductive. The return spring 30 has been forced to form a compressed shape. As shown in FIG. 4, when the piston body 51 is displaced to the limit, the first air tube 12 is fully opened, and the inner side surface of the closure member 31 abuts against the free end 62 of the sleeve 60 to form a stop for the return spring 30 to be replaced. It is completely shielded from the sealing member 31 and the sleeve 60, and when the gas is circulated, the return spring 30 is prevented from being exposed to the flowing gas, and the dust and foreign matter in the gas are prevented from being stuck on the return spring 30, thereby avoiding the reset. The reed ability of the reed 30 is to maintain the effect of the action. In addition, when the creation is closed, when the external high-pressure gas is removed, the spring is retracted by the return spring 30 and the spring 54. If the piston member 50 is returned, the first air tube 12 is closed by the closing member 31 to form a close. Keep the gas out of circulation.

As shown in FIG. 5 and FIG. 6 , another embodiment of the present invention is the same, and the same reference numerals are used for the same or similar parts in the drawings and embodiments in the present embodiment, and the related descriptions can be referred to each other. . The shielding means includes a sleeve 80. The sleeve 80 is fixed to the closing member 31 and surrounds the returning spring 30. Of course, the sleeve 80 can also be integrated with the closing member 31. In addition, the fixing member 20 is provided with a shoulder portion 22 at the joint end 21, whereby when the piston member 50 drives the closing member 31 to open relative to the first air tube 12, the sleeve 80 can be gradually fixed as the closing member 31 is displaced. The member 20 is brought closer together so that when fully opened, the sleeve 80 abuts against the shoulder 22 of the fixing member 20 to completely shield the return spring 30 to achieve the aforementioned protective effect.

In summary, according to the above-mentioned shielding means, when the gas is circulated when the closing member 31 is opened, the returning reed 30 can be covered and shielded in the sleeves 60, 80 to prevent foreign matter or impurity in the circulating gas. It is fixed to the return spring 30 to avoid the situation in which the return spring 30 is not sure.

Further, the valve body 10 is heated by the heater 70, so that when the first gas pipe 12 is opened, minute impurities or foreign matter in the gas inside the valve body 10 can be burned at a high temperature to prevent foreign matter from sticking or accumulating in the pipe. The problem arises.

Although the present invention has been described in terms of a preferred embodiment, it is obvious to those skilled in the art that various changes can be made without departing from the spirit and scope of the invention. The above embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Any modification or change that is not in violation of the spirit of this creation is the scope of patent application for this creation.

(known)
1‧‧‧Three-way body
3‧‧‧Control lever
5‧‧‧Reed reed
(this creation)
100‧‧‧Right angle valve
11‧‧‧ chamber
13‧‧‧second trachea
21‧‧‧Binding end
30‧‧‧Reed reed
40‧‧‧Upper cover
42‧‧‧Intake Department
43‧‧‧closed end
45‧‧‧ positioning groove
51‧‧‧ piston body
53‧‧‧Spring slot
55‧‧‧ Positioning parts
61‧‧‧ fixed end
70‧‧‧heater
80‧‧‧ bushings
2‧‧‧Piston
4‧‧‧ valve
10‧‧‧ valve body
12‧‧‧First trachea
20‧‧‧Fixed parts
22‧‧‧ shoulder
31‧‧‧Closed
41‧‧‧Internal space
421‧‧‧air inlet
44‧‧‧Muffler
50‧‧‧ piston parts
52‧‧‧Control lever
54‧‧‧ Spring
60‧‧‧ bushings
62‧‧‧Free end
71‧‧‧Insulation

Fig. 1 is a cross-sectional view of a conventional right angle valve. [Fig. 2] is a cross-sectional view of the creation structure, showing that the first air tube is in a closed state. [Fig. 3] is a cross-sectional view of the creation structure, showing that the first air tube is gradually opened. [Fig. 4] is a cross-sectional view of the creation structure, showing that the first air tube is fully opened, and the return spring is shielded. [Fig. 5] is another embodiment of the present invention, showing that the first air tube is in a closed state, and the sleeve is fixed to the closure. [Fig. 6] is another embodiment of the present invention, showing that the first air tube is fully opened and the return spring is shielded.

100‧‧‧Right angle valve

10‧‧‧ valve body

11‧‧‧ chamber

12‧‧‧First trachea

13‧‧‧second trachea

20‧‧‧Fixed parts

21‧‧‧Binding end

30‧‧‧Reed reed

31‧‧‧Closed

40‧‧‧Upper cover

41‧‧‧Internal space

42‧‧‧Intake Department

421‧‧‧air inlet

43‧‧‧closed end

44‧‧‧Muffler

45‧‧‧ positioning groove

50‧‧‧ piston parts

51‧‧‧ piston body

52‧‧‧Control lever

53‧‧‧Spring slot

54‧‧‧ Spring

55‧‧‧ Positioning parts

60‧‧‧ bushings

61‧‧‧ fixed end

62‧‧‧Free end

70‧‧‧heater

71‧‧‧Insulation

Claims (12)

A right angle valve, comprising: a valve body having a chamber and a first air tube and a second air tube respectively communicating with the chamber; a fixing member fixed to the valve body, the fixing member having a joint end extends into the chamber; a return spring, one end of which is coupled to the joint end, and the other end is coupled to a closure member for closing the inner end of the first gas pipe; an upper cover is fixed to the valve body Different from the one end of the first air pipe; a piston member slidably disposed inside the upper cover, the end of the piston member is coupled to the closing member; and a shielding means for driving the closing member away from the first member The inner end of an air tube, when the gas is circulated, shields the return spring to prevent the return spring from being exposed to the flowing gas. The right angle valve according to claim 1, wherein the shielding means comprises a sleeve having a fixed end and a free end, the fixed end being fixed to the fixing member, the free end surrounding the joint end of the fixing member Between the return spring and the spring. The right angle valve of claim 2, wherein the fixed end is locked to the fixing member. The right angle valve of claim 2, wherein the closure member abuts the free end when the closure member is completely away from the inner end of the first air tube. The right angle valve of claim 1, wherein the shielding means comprises a bushing that is secured to the closure and surrounds the returning reed. The right angle valve according to claim 1, wherein the upper cover is provided with an inner space, the piston member has a piston body slidably disposed in the inner space, and the upper cover is adjacent to the valve body and is provided with an air inlet portion communicating with the inner portion space. The right angle valve of claim 6, wherein the piston body is coupled to a control rod that passes through the fixing member and is coupled to the closure member. The right angle valve according to claim 6, wherein the piston body is recessed with a spring groove, the upper cover has a closed end, and a spring is disposed between the spring groove and the closed end. The right angle valve according to claim 8, wherein the spring groove is provided with a positioning member for inserting the spring. The right angle valve of claim 8, wherein the closed end of the upper cover has a muffler, and an inner end of the muffler is in communication with the inner space. A right angle valve according to any one of claims 1 to 10, further comprising a heater for heating the valve body. The right angle valve of claim 11, further comprising a heat insulating sheet disposed between the valve body and the upper cover.