Two-section angle valve with buffering and deflating functions

Abstract

The utility model discloses a two-section type angle valve with a buffering and deflating function, which comprises a valve body, a valve core, a valve core, a valve core, a valve core and a valve core, and is characterized in that the valve body is provided with an air inlet and an air outlet; the driving cylinder is combined with the valve body; an auxiliary driving cavity is formed in the main piston; a driving air passage; the auxiliary piston can be driven to move up and down and is positioned in the auxiliary driving cavity; a pair of springs; the valve rod is fixedly arranged on the auxiliary piston and is provided with an auxiliary valve plate; the main valve plate is provided with a containing chamber, a buffering air leakage channel and a buffering air leakage hole, the valve rod penetrates into the main valve plate to enable the auxiliary valve plate to be located in the containing chamber in a vertically movable mode, one end of the buffering air leakage channel is communicated with the containing chamber, the other end of the buffering air leakage channel is formed by opening the side face of the main valve plate and communicated with the air outlet, and the buffering air leakage hole is communicated with the air inlet; and a main spring.

Description

Technical Field

[0001] The utility model relates to an angle valve, in particular to a two-section angle valve with a buffering and air-release function. Background Art

[0002] Patent No. I551797 discloses a two-stage angle valve, which mainly controls the stroke of its airtight valve disc, thereby generating a first spacing and a second spacing for its first pipeline, and achieves the effect of controlling the gas flow by making the first spacing smaller and the second spacing larger. However, in actual use of the technology in this case, it was found that simply controlling the stroke size of the airtight valve disc to control the gas flow did not result in a very obvious difference in gas flow at the first spacing and the second spacing. The reason is that although the first spacing and the second spacing are different in stroke, the area of ​​the airtight valve disc when opened is the same. Therefore, when the airtight valve disc is opened to the first spacing, the gas flow is actually very large. Even if it continues to be opened to the second spacing, the difference in gas flow is not significant.

[0003] Patent publication number CN 116817003A discloses a two-stage angle valve, which improves the problems of the aforementioned technology. This case mainly uses a main valve flap and a secondary valve flap to open separately, so as to control the opening or closing of a main air inlet and a secondary air inlet, and sets the diameter of the secondary air inlet to be smaller than the diameter of the main air inlet. The secondary air inlet is opened first to allow a small flow of gas to pass through, and then the main air inlet is opened to allow a large flow of gas to pass through, so as to achieve the effect of buffering air intake. The main problem of this case is that its main valve stem and the secondary valve stem need to be driven by a driving mechanism respectively, that is, its main valve stem is driven by the main piston, and the secondary valve stem is driven by the secondary piston. In this way, the secondary valve stem must be sleeved in the main valve stem, and it must be kept to be able to move smoothly separately, and it must be sealed with a sealing ring to maintain airtightness. Therefore, the structure is more complicated, the difficulty of assembly is also high, and it is also easy to have problems with the smooth operation of components during actual use. In addition, when the technology of this case is working, gas may penetrate into the auxiliary valve disc and act on the auxiliary elastic return member. If the gas is corrosive, the auxiliary elastic return member may be corroded and damaged, thereby causing malfunction. Utility Model Content

[0004] The main purpose of the utility model is to provide a two-stage angle valve with a buffering and air-deflating function, which can provide a buffering and air-deflating effect.

[0005] Another purpose of the utility model is to provide a two-stage angle valve with a buffering and air release function, which can use only one valve stem to drive the auxiliary valve plate and the main valve plate respectively. The structure is simpler than the previous technology, the assembly is easier, and there is less chance of problems with smooth operation of components.

[0006] In order to achieve the above-mentioned purpose, the utility model proposes a two-stage angle valve with a buffering and air-release function, comprising: a valve body, having an air inlet at the bottom and an air outlet at the side; a driving cylinder, combined with the valve body and located above the valve body; a main piston, which can be driven to move up and down and is located in the driving cylinder, and the main piston is concave from top to bottom to form a secondary driving chamber; a driving airway, which is arranged in the driving cylinder and connected to the inside of the driving cylinder, and the driving airway is connected to an external control air source; a secondary piston, which can be driven to move up and down and is located in the secondary driving chamber; a secondary spring, which is arranged in the driving cylinder, and the two ends of which are respectively against the driving cylinder and the secondary piston , whose elastic restoring force pushes the secondary piston to move downward; a valve stem, the top end of which is fixedly arranged on the secondary piston and extends downward by a predetermined length, and can pass through the main piston and the driving cylinder and extend into the valve body along with the upward and downward movement of the secondary piston, the bottom end of the valve stem has a secondary valve plate; a secondary driving air channel, which is composed of a secondary channel penetrating the driving cylinder, a gap between the valve stem and the driving cylinder, and a valve stem air channel arranged in the valve stem, the valve stem air channel is connected to the interior of the secondary driving chamber, and the secondary channel is connected to an external secondary control air source; a main valve plate, which has a chamber and a buffer air release channel, and the main valve plate has an upper abutment and a lower abutment, respectively. Located above and below the chamber, the lower abutment portion has a buffer air leakage hole, the valve stem penetrates the main valve disc so that the auxiliary valve disc can be located in the chamber so as to move up and down, one end of the buffer air leakage passage is connected to the chamber, and the other end is formed by the side opening of the main valve disc and connected to the air outlet, and the buffer air leakage hole is connected to the air inlet; and a main spring is arranged in the valve body and sleeved on the valve stem, and the two ends respectively abut against the drive cylinder and the main valve disc, and its elastic restoring force pushes the main valve disc to move downward; wherein, the valve stem together with the auxiliary valve disc moves up and down with the auxiliary piston; wherein, the valve stem moves at a lowest position with the movement of the auxiliary piston and the main piston The valve stem moves between a position and a highest position. When the valve stem is at the lowest position, the auxiliary valve plate abuts against the lower abutment portion of the accommodating chamber to close the buffer air leakage hole, and the main valve plate abuts against the valve body to close the air inlet, so that the air inlet is not connected to the air outlet; in the process of the valve stem rising from the lowest position, when the auxiliary valve plate leaves the lower abutment portion but has not yet abutted against the upper abutment portion, the air outlet is connected to the air inlet via the buffer air leakage channel, the accommodating chamber and the buffer air leakage port; when the valve stem is at the highest position, the auxiliary valve plate abuts against the upper abutment portion of the accommodating chamber and lifts the main valve plate without closing the air inlet, thereby allowing the air inlet and the air outlet to communicate in space.

[0007] Wherein, the diameter of the buffer air release channel is smaller than the diameter of the air inlet.

[0008] Wherein, the diameter of the buffer air leakage hole is smaller than the diameter of the air inlet.

[0009] The invention further comprises an elastic sealing tube, the two ends of which are respectively connected to the main valve plate and the valve body, and covers the valve stem and the main spring.

[0010] The driving cylinder comprises a lower block and an upper cylinder body which are combined, the valve body is arranged on the lower block, a driving chamber is formed between the upper cylinder body and the lower block, the main piston and the auxiliary spring are located in the driving chamber, and the valve stem passes through the lower block.

[0011] Wherein, the driving air channel and the auxiliary channel are arranged on the lower block.

[0012] The lower block has an upper sealing ring and a lower sealing ring which can be slidably mounted on the valve stem, the connecting position between the secondary channel and the gap is located between the upper sealing ring and the lower sealing ring, and the connecting position between the valve stem airway and the gap is located between the upper sealing ring and the lower sealing ring.

[0013] With the above technical content, the utility model can not only provide the effect of buffering air leakage, but also use only one valve stem to drive the auxiliary valve plate and the main valve plate respectively. The structure is simpler than the previous technology, the assembly is easier, and there is less chance of problems with smooth operation of components.

[0014] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of a preferred embodiment of the utility model.

[0016] Figure 2 For along Figure 1 Sectional view along line 2-2.

[0017] Figure 3 For along Figure 1 Sectional view along line 3-3.

[0018] Figure 4 for Figure 3 A partial enlarged view of .

[0019] Figure 5 This is an action diagram of a preferred embodiment of the utility model.

[0020] Figure 6 for Figure 5 A partial enlarged view of .

[0021] Figure 7 This is another action diagram of a preferred embodiment of the utility model.

[0022] Wherein, the reference numerals are:

[0023] 10: Two-stage angle valve with buffering and air release function

[0024] 11: Valve body

[0025] 12: Air inlet

[0026] 13: Air outlet

[0027] 15: Driving cylinder

[0028] 151: Lower block

[0029] 152: Upper cylinder block

[0030] 153: Driving cavity

[0031] 21: Main piston

[0032] 213: Auxiliary drive chamber

[0033] 25: Driving airway

[0034] 31: Auxiliary piston

[0035] 35: Auxiliary spring

[0036] 41: Valve stem

[0037] 411: Valve stem airway

[0038] 42: Auxiliary valve plate

[0039] 45: Auxiliary drive airway

[0040] 451: Secondary channel

[0041] 51: Main valve plate

[0042] 511: Upper part

[0043] 512: Lower part

[0044] 513: Buffer vent hole

[0045] 52: Room

[0046] 53: Buffer deflation channel

[0047] 55: Main spring

[0048] 56: Elastic sealing tube

[0049] 91: Control gas source

[0050] 92: Auxiliary control gas source

[0051] G: Gap

[0052] HP: Highest position

[0053] LP:Lowest Position

[0054] S1: Upper sealing ring

[0055] S2: Lower sealing ring DETAILED DESCRIPTION

[0056] In order to explain the technical features of the present invention in detail, the following preferred embodiments are given and illustrated with reference to the accompanying drawings, wherein:

[0057] like Figures 1 to 7 As shown, the utility model uses a preferred embodiment to illustrate a two-stage angle valve 10 with a buffering and deflation function, which is mainly composed of a valve body 11, a driving cylinder 15, a main piston 21, a driving air channel 25, a secondary piston 31, a secondary spring 35, a valve stem 41, a secondary driving air channel 45, a main valve plate 51 and a main spring 55, wherein:

[0058] The valve body 11 has an air inlet 12 at the bottom and an air outlet 13 at the side.

[0059] The driving cylinder 15 is combined with the valve body 11 and is located above the valve body 11. In actual implementation, for the convenience of processing and production, the driving cylinder 15 can be composed of a lower block 151 and an upper cylinder body 152. The valve body 11 is arranged on the lower block 151, and a driving chamber 153 is formed between the upper cylinder body 152 and the lower block 151.

[0060] The main piston 21 is driven to move up and down and is located in the driving chamber 153 of the driving cylinder 15. The main piston 21 is recessed from top to bottom to form a secondary driving chamber 213.

[0061] The driving air passage 25 is provided in the driving cylinder 15 and communicated with the interior of the driving cylinder 15. The driving air passage 25 is connected to an external control air source 91. In actual implementation, the driving air passage 25 is provided in the lower block 151.

[0062] The auxiliary piston 31 is driven to move up and down in the auxiliary driving chamber 213 .

[0063] The auxiliary spring 35 is disposed in the driving chamber 153 of the driving cylinder 15 , with two ends respectively abutting against the upper cylinder body 152 and the auxiliary piston 31 , and the elastic restoring force thereof pushes the auxiliary piston 31 to move downward.

[0064] The valve stem 41 has its top end fixed to the secondary piston 31 and extends downward by a predetermined length to pass through the lower block 151 , and can move up and down with the secondary piston 31 through the primary piston 21 and the drive cylinder 15 to extend into the valve body 11 . The bottom end of the valve stem 41 has a secondary valve plate 42 .

[0065] The auxiliary driving air passage 45 is formed by connecting an auxiliary passage 451 penetrating the driving cylinder 15, a gap G between the valve stem 41 and the driving cylinder 15, and a valve stem air passage 411 disposed in the valve stem 41. The valve stem air passage 411 is connected to the interior of the auxiliary driving chamber 213. The auxiliary passage 451 is connected to an external auxiliary control air source 92. In this embodiment, the auxiliary passage 451 is disposed in the lower block 151 as an example.

[0066] The main valve plate 51 has a chamber 52 and a buffer air leakage channel 53. The main valve plate 51 has an upper abutment portion 511 and a lower abutment portion 512 which are respectively located above and below the chamber 52. The lower abutment portion 512 has a buffer air leakage hole 513. The valve stem 41 penetrates into the main valve plate 51 so that the auxiliary valve plate 42 can be moved up and down in the chamber 52. One end of the buffer air leakage channel 53 is connected to the chamber 52, and the other end is formed by a side opening of the main valve plate 51 and connected to the air outlet 13. The buffer air leakage hole 513 is connected to the air inlet 12. In this embodiment, the diameter of the buffer air vent 53 is set to be smaller than the diameter of the air inlet 12. In addition, the diameter of the buffer air vent hole 513 is also set to be smaller than the diameter of the air inlet 12. Such a setting can ensure that the diameters of the buffer air vent 53 and the buffer air vent hole 513 are not too large, and only a small amount of working gas can pass through per unit time, thereby achieving the effect of buffering the air pressure difference between the air inlet 12 and the air outlet 13.

[0067] The main spring 55 is disposed in the valve body 11 and sleeved on the valve stem 41, with its two ends respectively abutting against the drive cylinder 15 and the main valve plate 51, and its elastic restoring force pushes the main valve plate 51 to move downward. If used in an environment where the working gas is corrosive, in order to protect the main spring 55 from being corroded by the working gas, this embodiment can be further provided with an elastic sealing tube 56, with its two ends respectively connected to the main valve plate 51 and the valve body 11, and covering the valve stem 41 and the main spring 55, so as to provide a protective effect of isolating the external working gas.

[0068] The valve stem 41 and the auxiliary valve plate 42 move with the up and down movement of the auxiliary piston 31. In actual implementation, the lower block 151 has an upper sealing ring S1 and a lower sealing ring S2 and is slidably sleeved on the valve stem 41. No matter how the valve stem 41 moves, the communication position between the auxiliary channel 451 and the gap G is maintained between the upper sealing ring S1 and the lower sealing ring S2, and the communication position between the valve stem airway 411 and the gap G is maintained between the upper sealing ring S1 and the lower sealing ring S2.

[0069] The valve stem 41 moves between a lowest position LP and a highest position HP along with the movement of the secondary piston 31 and the primary piston 21. When the valve stem 41 is at the lowest position LP, the secondary valve plate 42 abuts against the lower abutment portion 512 of the chamber 52 to close the buffer air leakage hole 513, and the primary valve plate 51 abuts against the valve body 11 to close the air inlet 12, so that the air inlet 12 is not connected to the air outlet 13. The valve stem 41 rises from the lowest position LP to During the process, when the auxiliary valve plate 42 leaves the lower abutment portion 512 but has not yet abutted against the upper abutment portion 511, the air outlet 13 is connected to the air inlet 12 via the buffer air bleed channel 53, the chamber 52 and the buffer air bleed hole 513; when the valve stem 41 is at the highest position HP, the auxiliary valve plate 42 abuts against the upper abutment portion 511 of the chamber 52 and raises the main valve plate 51 without closing the air inlet 12, thereby allowing the air inlet 12 and the air outlet 13 to communicate with each other in space.

[0070] The structure of the present embodiment is described above. Next, the operation mode of the present embodiment is described. The operation modes of the present embodiment are divided into: closing, buffered opening and full opening, and the gas located in the air inlet 12 of the valve body 11 is defined as the working gas.

[0071] like Figure 2 and Figure 3 As shown, in the closed state, the valve stem 41 is located at the lowest position LP, at which time the main valve plate 51 closes the air inlet 12 , and the auxiliary valve plate 42 closes the buffer air leakage hole 513 .

[0072] like Figure 5 As shown, when the buffer opening is to be performed from the closed state, the auxiliary control air source 92 first provides driving gas to the auxiliary driving air channel 45 to enter the auxiliary driving chamber 213, thereby driving the auxiliary piston 31 to move upward relative to the main piston 21, and the valve stem 41 will rise with the auxiliary piston 31, and the auxiliary valve plate 42 will rise accordingly and no longer close the buffer leak hole 513. At this time, Figure 6 As shown, the working gas in the air inlet 12 of the valve body 11 will enter the chamber 52 through the buffer air leakage hole 513, and flow out to the air outlet 13 through the buffer air leakage channel 53. Since the diameter of the buffer air leakage channel 53 is smaller than the diameter of the air inlet 12, and the diameter of the buffer air leakage hole 513 is also smaller than the diameter of the air inlet 12, the working gas can only flow from the air inlet 12 to the air outlet 13 in small amounts.

[0073] like Figure 7 As shown, the process of entering the fully open state from the buffered open state is to continue the above-mentioned action. After the auxiliary piston 31 rises to the set height, the control air source 91 (shown in Figure 5) provides driving gas to the driving air passage 25 and enters the driving chamber 153, thereby driving the main piston 21 to rise relative to the driving cylinder 15, and the auxiliary piston 31 rises together with the main piston 21, and rises together with the valve stem 41 and the auxiliary valve plate 42, and the auxiliary valve plate 42 abuts against the upper abutment portion 511 (shown in Figure 6 ) to raise the main valve plate 51, the main valve plate 51 no longer blocks the air inlet 12, and the working gas flows directly from the air inlet 12 to the air outlet 13.

[0074] like Figure 3 As shown, when it is desired to close again, the control gas source 91 and the auxiliary control gas source 92 are controlled to suck back the driving gas, and the elastic restoring force of the main spring 55 and the auxiliary spring 35 will also push the main valve plate 51 and the auxiliary valve plate 42 downward respectively, so that the main piston 21 and the auxiliary piston 31 descend, and finally return to the closed state.

[0075] As can be seen from the above description of the actions, this embodiment can first perform buffering and release of air when opening, and then fully open, thereby effectively providing the effect of buffering and release of air. In addition, the utility model only uses a valve stem 41 to cooperate with the structure of the auxiliary valve plate 42 and the main valve plate 51, and can drive the auxiliary valve plate 42 and the main valve plate 51 respectively. The structure is simpler than the prior art, and the assembly is easier. It is less likely to have the problem of the prior art that the main valve stem 41 and the auxiliary valve stem 41 need to be driven separately, and the components are not smooth.

[0076] It is worth pointing out that the up-down relationship described in this case is only an example, and it is not limited to the up-down relationship shown in the diagram of this case when used. In fact, it can also be used upside down or sideways.

[0077] The above is merely the content of the present invention described through the embodiments, and cannot be used to limit the scope of the claims of the present invention. All simple changes or equivalent implementations made according to the scope of the claims of the present invention and the contents of the patent specification should be covered by the scope of the claims of the present invention.

[0078] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims of the present invention.

Claims

1. A two-stage angle valve with a buffering and air release function, characterized in that: Contains: A valve body having an air inlet at the bottom and an air outlet at the side; a driving cylinder, combined with the valve body and located above the valve body; A main piston is located in the driving cylinder and can be driven to move up and down. The main piston is concave from top to bottom to form a secondary driving chamber; A driving air passage is provided in the driving cylinder and communicated with the interior of the driving cylinder, and the driving air passage is connected to an external control air source; A secondary piston is located in the secondary driving chamber and can be driven to move up and down; A secondary spring is disposed in the driving cylinder, with two ends respectively abutting against the driving cylinder and the secondary piston, and its elastic restoring force pushes the secondary piston to move downward; A valve stem, the top end of which is fixed to the auxiliary piston and extends downward by a predetermined length, and can move up and down with the auxiliary piston through the main piston and the driving cylinder and extend into the valve body, and the bottom end of the valve stem has an auxiliary valve plate; A secondary driving air channel, which is composed of a secondary channel penetrating the driving cylinder, a gap between the valve stem and the driving cylinder, and a valve stem air channel arranged in the valve stem, the valve stem air channel is connected to the interior of the secondary driving chamber, and the secondary channel is connected to an external secondary control air source; a main valve plate, having a chamber and a buffer air leakage passage, the main valve plate having an upper abutment portion and a lower abutment portion respectively located above and below the chamber, the lower abutment portion having a buffer air leakage hole, the valve stem penetrates the main valve plate so that the auxiliary valve plate can be moved up and down in the chamber, one end of the buffer air leakage passage is connected to the chamber, and the other end is formed by a side opening of the main valve plate and connected to the air outlet, and the buffer air leakage hole is connected to the air inlet; and A main spring is disposed in the valve body and sleeved on the valve stem, with two ends respectively abutting against the drive cylinder and the main valve plate, and its elastic restoring force pushes the main valve plate to move downward; Wherein, the valve stem together with the auxiliary valve plate moves along with the up and down movement of the auxiliary piston; The valve stem moves between a lowest position and a highest position with the movement of the secondary piston and the primary piston. When the valve stem is at the lowest position, the secondary valve disc abuts against the lower abutment portion of the accommodating chamber to close the buffer air leakage hole, and the main valve disc abuts against the valve body to close the air inlet, so that the air inlet is not connected to the air outlet. In the process of the valve stem rising from the lowest position, when the secondary valve disc leaves the lower abutment portion but has not yet abutted against the upper abutment portion, the air outlet is connected to the air inlet via the buffer air leakage channel, the accommodating chamber and the buffer air leakage port. When the valve stem is at the highest position, the secondary valve disc abuts against the upper abutment portion of the accommodating chamber and raises the main valve disc without closing the air inlet, thereby allowing the air inlet and the air outlet to communicate in space.

2. The two-stage angle valve with buffering and air release function according to claim 1 is characterized in that: The diameter of the buffer air release channel is smaller than the diameter of the air inlet.

3. The two-stage angle valve with buffering and air release function according to claim 1 is characterized in that: The diameter of the buffer air leakage hole is smaller than the diameter of the air inlet.

4. The two-stage angle valve with buffering and air release function according to claim 1 is characterized in that: It further comprises an elastic sealing tube, the two ends of which are respectively connected to the main valve plate and the valve body, and covers the valve stem and the main spring.

5. The two-stage angle valve with buffering and air release function according to claim 1 is characterized in that: The driving cylinder comprises a lower block and an upper cylinder body which are combined. The valve body is arranged on the lower block. A driving chamber is formed between the upper cylinder body and the lower block. The main piston and the auxiliary spring are located in the driving chamber. The valve stem passes through the lower block.

6. The two-stage angle valve with buffering and air release function according to claim 5 is characterized in that: The driving air channel and the auxiliary channel are arranged on the lower block.

7. The two-stage angle valve with buffering and air release function according to claim 6 is characterized in that: The lower block has an upper sealing ring and a lower sealing ring which can be slidably mounted on the valve stem. The communication position between the secondary channel and the gap is located between the upper sealing ring and the lower sealing ring. The communication position between the valve stem airway and the gap is located between the upper sealing ring and the lower sealing ring.

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