Low temperature aluminum angle valve

Abstract

The application relates to the technical field of angle valves, and discloses a low-temperature aluminum angle valve which comprises a valve body and a water inlet cylinder at the bottom of the valve body, a water outlet cylinder is welded at the cylinder body of the water inlet cylinder and communicates with the inside of the water inlet cylinder, a valve rod is arranged in the valve body, a valve plate for adjusting medium flow or medium on-off is arranged at the bottom of the valve rod, a rubber plug is fixed at the bottom of the valve plate, the inside of the water inlet cylinder is fixed with a base, an opening for medium flow is arranged on the base, a filter screen for filtering impurities is detachably arranged at the bottom of the base; the valve plate comprises a bottom plate, a ring plate and a cover plate, the diameter of the ring plate is smaller than that of the bottom plate and the cover plate so as to form a containing groove, a rubber pad is adjustably arranged in the containing groove, and an abutting assembly for adjusting the rubber pad is arranged. The rubber pad and the abutting assembly can ensure that the rubber pad stably abuts at the opening position of the base, and the occurrence of water leakage caused by abrasion can be avoided.

Description

Technical Field

[0001] This invention relates to the field of angle valve technology, specifically a low-temperature aluminum angle valve. Background Technology

[0002] An angle valve is a type of valve used to control fluid flow. Its main function is to connect and control the flow of media in pipelines, and to regulate the flow rate and pressure of the media. Low-temperature aluminum angle valves are usually made of aluminum-magnesium alloy and are commonly used in low-temperature and cryogenic environments. They are suitable for various engineering projects, such as air separation units, chemical plants, and hazardous materials transportation. They can handle a variety of fluids. In practical applications, different options can be selected according to specific needs, such as extended length, bellows connection, metal valve plug or throttling valve plug, flange connection end, stainless steel butt welded connection fittings at the inlet, fireproof structure, reinforced packing gland, and locking handwheel, etc.

[0003] Currently, the aluminum angle valve plates used in the market are operated by turning a handwheel to adjust the threaded connection between the valve plate and the valve body, which drives the valve core to move to the bottom. After the rubber pad on the valve core contacts the inner wall of the channel, the channel can be sealed. As the rubber pad moves with the valve core, it will rub against the inner wall of the channel. Over time, the rubber pad will wear down, which can easily lead to water leakage during subsequent sealing processes. Summary of the Invention

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a low-temperature aluminum angle valve, which solves the problem that existing technologies cannot adjust the rubber gasket, and the rubber gasket is prone to wear after long-term use, leading to water leakage during subsequent sealing processes.

[0006] Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a low-temperature aluminum angle valve, comprising a valve body and an inlet cylinder at the bottom of the valve body, an outlet cylinder communicating with the inside of the inlet cylinder is welded to the cylinder body, and a valve stem is provided in the valve body, a valve plate for adjusting the flow rate or the on / off state of the medium is installed at the bottom of the valve stem, a rubber plug is fixed at the bottom of the valve plate, and a base is fixed inside the inlet cylinder, an opening for the flow of the medium is provided on the base, and a filter screen for filtering impurities is detachably installed at the bottom of the base; The valve plate includes a base plate, an annular plate, and a cover plate. The annular plate is disposed between the base plate and the cover plate to form a receiving area. The diameter of the annular plate is smaller than the diameter of the base plate and the cover plate to form a receiving groove. A rubber pad is adjustablely disposed in the receiving groove. The abutment assembly for adjusting the rubber pad includes a guide shaft rotatably disposed in the receiving area and several guide blocks fixed in the receiving area. A guide rod movably passes through the guide blocks, and a guide plate is fixed at one end of the guide rod. The guide plate passes through an annular plate and is mounted on the inner annular surface of the rubber pad. A return spring sleeved on the guide rod is provided between the guide plate and the guide blocks. A fixed shaft is provided at the end of the guide rod. A number of connecting plates equal to the number of guide blocks are fixed on the guide shaft. A guide opening is pre-set on the connecting plate, and an installation shaft movably moves within the guide opening. The installation shaft and the corresponding fixed shaft are movably connected by the same connecting rod. The guide shaft moves through a drive assembly.

[0008] Furthermore, the drive assembly includes a gear assembly, wherein the gear assembly includes a rotating shaft rotatably mounted on the bottom of the cover plate and a rotating shaft mounted on the top of the cover plate via a bracket. Both the rotating shaft and the guide shaft are provided with guide gears, and the two guide gears mesh with each other for transmission. Both the rotating shaft and the guide shaft are provided with bevel gears, and the two bevel gears mesh with each other. A drive gear is also provided on the rotating shaft.

[0009] Furthermore, a mounting base is fixedly provided on the top of the base, and a rack segment is provided on the side wall of the mounting base at a position two-thirds of the way down from the top. The rack segment meshes with the drive gear for transmission.

[0010] Furthermore, several fixing components are provided between the filter screen and the base, including a plug rod fixed on the filter screen and a mating groove opened at the bottom of the base for engaging with the plug rod. An opening is also pre-set on the inner wall of the base, wherein the opening communicates with the corresponding mating groove. A groove is pre-set on the plug rod, a compression spring is provided in the groove, and a button that can be snapped into the opening is fixed at the other end of the compression spring.

[0011] Furthermore, the pre-set openings on the base include a cylindrical opening and two frustum-shaped openings. The two frustum-shaped openings are both located above the cylindrical opening and communicate with it. The upper frustum-shaped opening is inverted, and an airbag is provided on the inner wall of the frustum-shaped opening. Several arc-shaped sealing gaskets are fixed on the airbag, and the several sealing gaskets surround to form an annular body.

[0012] Furthermore, the upper frustum-shaped opening forms an angle α with the lower frustum-shaped opening, wherein the angle α is 60°.

[0013] Furthermore, the valve body is provided with a handwheel for adjusting the valve stem, and a cold box drip tray is provided on the valve body.

[0014] Furthermore, the front end of the guide rod is pre-set with an inverted "U" shaped mounting groove for snapping the guide plate, and a hand-tightening bolt for locking the guide plate is threaded onto the guide rod.

[0015] Furthermore, the top of the base is level with the lowest point of the water outlet of the water outlet cylinder.

[0016] Furthermore, a limiting opening is pre-set on the arc surface of the ring plate for the guide plate to pass through.

[0017] Beneficial effects

[0018] Compared with the prior art, the present invention provides a low-temperature aluminum angle valve, which has the following beneficial effects:

[0019] 1. The present invention uses a set abutment component to drive the deflection of the guide plate by rotating the guide shaft. Under the action of the connecting rod, the guide rod is pulled to start moving. The guide plate expands or tightens the rubber pad, thereby ensuring that the rubber pad can stably abut against the opening of the base and avoid water leakage caused by wear.

[0020] 2. This invention, through the setting of gear assembly and rack segment, gradually achieves the meshing of drive gear and rack segment during valve plate movement. As the valve plate continues to move for sealing, drive gear starts to rotate. Utilizing the meshing of bevel gear and guide gear, the guide shaft rotates. For this purpose, the rubber pad is tightened by the abutment component. Once the guide gear and rack segment disengage, the return spring quickly rebounds, returning the rubber pad to its initial position. By utilizing the cooperation between the sealing gasket and airbag, the rubber pad can be stably positioned between the sealing gaskets, achieving a sealing effect during sealing. The overall structure is compact and achieves energy saving.

[0021] 3. The present invention, through the design of the cold water tank drip tray and the long-necked valve cover, has low thermal conductivity and excellent low-temperature adaptability, ensuring that it can work stably in low-temperature environments. At the same time, the cold water tank drip tray can prevent condensation in low-temperature environments from causing corrosion or damage to the valve body, effectively improving the overall service life. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional schematic diagram of the internal structure of the inlet and outlet water cylinders of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the local separation structure in the image; Figure 4 For the present invention Figure 2 A partial side view of the structure; Figure 5 This is a partial internal structure diagram of the valve plate of the present invention; Figure 6 This is a partial structural schematic diagram of the abutment component and gear assembly of the present invention; Figure 7 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the diagram; Figure 8 For the present invention Figure 3 Enlarged schematic diagram of the structure at point B in the diagram; Figure 9 For the present invention Figure 4 Enlarged schematic diagram of the structure at point C; Figure 10 For the present invention Figure 6 A magnified schematic diagram of the structure at point D.

[0024] In the diagram: 1. Valve body; 2. Inlet cylinder; 3. Outlet cylinder; 4. Cold box drip tray; 5. Handwheel; 6. Base; 7. Valve stem; 8. Valve plate; 801. Base plate; 802. Ring plate; 803. Cover plate; 9. Rubber plug; 10. Filter screen; 11. Abutment assembly; 1101. Guide shaft; 1102. Guide block; 1103. Guide rod; 1104. Return spring; 1105. Guide plate; 1106. Fixed shaft; 1107. Guide port; 108. Connecting rod; 1109. Connecting plate; 12. Rubber pad; 13. Gear assembly; 1301. Guide gear; 1302. Drive gear; 1303. Rotating shaft; 1304. Bevel gear; 1305. Rotating shaft; 14. Sealing gasket; 15. Airbag; 16. Fixing assembly; 1601. Connecting groove; 1602. Opening; 1603. Insert rod; 1604. Button; 1605. Compression spring; 17. Mounting base; 18. Rack segment. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example: Figures 1-10 As shown, the present invention provides a technical solution: a low-temperature aluminum angle valve, including a valve body 1 and an inlet cylinder 2 at the bottom of the valve body 1. An outlet cylinder 3 communicating with the inside of the inlet cylinder 2 is welded to the cylinder body of the inlet cylinder 2. The inlet cylinder 2 and the valve body 1 are connected by a flange. A valve stem 7 is provided inside the valve body 1. A valve plate 8 for adjusting the flow rate or the on / off state of the medium is installed at the bottom of the valve stem 7. A handwheel 5 for adjusting the valve stem 7 is provided on the valve body 1. A cold box drip tray 4 is provided on the valve body 1. The rotation of the valve stem 7 is controlled by rotating the handwheel 5, thereby driving the valve plate 8 to descend, so as to control the flow rate or the on / off state of the medium. The handwheel 5 is threaded to the valve body 1. A rubber plug 9 is fixed at the bottom of the valve plate 8. A base 6 is fixed inside the inlet cylinder 2. An opening for the flow of medium is opened on the base 6. It is worth noting that during the descent of the valve plate 8, the rubber plug 9 passes through the opening to cooperate with the rubber gasket 12 for sealing. The valve plate 8 includes a base plate 801, an annular plate 802, and a cover plate 803. The annular plate 802 is disposed between the base plate 801 and the cover plate 803 to form a receiving area. The diameter of the annular plate 802 is smaller than the diameter of the base plate 801 and the cover plate 803 to form a receiving groove. A rubber pad 12 is adjustablely disposed in the receiving groove, and the rubber pad 12 can block the position of the receiving groove.

[0027] Specifically, in combination Figure 6 as well as Figure 9As shown, the drive assembly includes a gear assembly 13, which includes a rotating shaft 1303 rotatably mounted on the bottom of the cover plate 803 and a rotating shaft 1305 mounted on the top of the cover plate 803 via a bracket. The rotating shaft 1303 is located within the receiving area, and both the rotating shaft 1303 and the guide shaft 1101 are provided with guide gears 1301, which mesh with each other for transmission. Both the rotating shaft 1305 and the rotating shaft 1303 are provided with bevel gears 1304, which mesh with each other. A drive gear 1302 is also provided on the rotating shaft 1305. When the drive gear 1302 rotates, it gradually drives the rotating shaft 1305 to rotate. Therefore, under the meshing of the bevel gears 1304, the rotating shaft 1303 is driven. When the rotating shaft 1303 starts to rotate, it will again achieve synchronous rotation of the guide shaft 1101 through the meshing of the guide gears 1301. It is worth noting that the top of the base 6 is fixedly provided with a mounting seat 17. A rack segment 18 is provided at the position of two-thirds of the way down the side wall of the mounting seat 17. The rack segment 18 meshes with the drive gear 1302 for transmission. The remaining part of the side wall of the mounting seat 17 is smooth. When the valve plate 8 moves, the drive gear 1302 will contact the rack segment 18 and mesh with it. Therefore, as the valve plate 8 continues to descend, the drive gear 1302 will rotate, completing the operation of the entire gear assembly 13 to cooperate with the movement of the abutment assembly 11.

[0028] The device includes an abutment assembly 11 for adjusting the rubber pad 12, a guide shaft 1101 rotatably disposed in the receiving area, and several guide blocks 1102 fixed in the receiving area. A guide rod 1103 moves through the guide block 1102, and an opening is pre-set in the guide block 1102 through which the guide rod 1103 passes. A guide plate 1105 is fixed to one end of the guide rod 1103, and the front end of the guide rod 1103 has a pre-set cross-section with an inverted "U" shape. The guide rod 1103 has a mounting groove for engaging the guide plate 1105, and a hand-tightening bolt is threaded onto the guide rod 1103 to lock the guide plate 1105 in place. The guide plate 1105 engages with the mounting groove for quick installation, and the hand-tightening bolt secures the entire assembly. The guide plate 1105 passes through the ring plate 802 and is mounted on the inner ring surface of the rubber pad 12. A limit opening is pre-set on the arc surface of the ring plate 802 for the guide plate 1105 to pass through, thereby ensuring the guide plate 1105... 05. To ensure the stability of movement, a return spring 1104 is provided between the guide plate 1105 and the guide block 1102, sleeved on the guide rod 1103. When the guide rod 1103 moves, it gradually pulls the return spring 1104, thus ensuring that it is in a compressed state. A fixed shaft 1106 is provided at the end of the guide rod 1103, and a number of connecting plates 1109, equal to the number of guide blocks 1102, are fixed on the guide shaft 1101. In this embodiment, the guide block 1102 and the connecting plates 1109... The quantity is set to two, and the connecting plate 1109 has a pre-set guide port 1107. The mounting shaft moves within the guide port 1107. The mounting shaft and the corresponding fixed shaft 1106 are movably connected by the same connecting rod 1108. The guide shaft 1101 moves through the drive assembly. When the guide shaft 1101 rotates, it will synchronously drive the connecting plate 1109 to rotate. Therefore, the mobility of the connecting rod 1108 is used to pull the guide rod 1103 to move, further completing the tensioning operation of the rubber pad 12. It is worth noting that the pre-set openings on the base 6 include a cylindrical opening and two frustum-shaped openings. The two frustum-shaped openings are positioned above and communicate with the cylindrical opening. The upper frustum-shaped opening is inverted, and an airbag 15 is installed on its inner wall. Several arc-shaped sealing gaskets 14 are fixed to the airbag 15, forming a ring. The arc of the upper sealing gasket 14 is greater than that of the lower one. When the rubber plug 9 enters the opening, the rubber gasket 12 is taut under the action of the abutment component 11, thus allowing it to enter the opening. The top of the base 6 is at the lowest point of the water outlet of the water outlet cylinder 3. When the guide gear 1301 disengages from the rack section 18, the return spring 1104 returns to its initial state, and then the rubber pad 12 returns to its initial position. This ensures that the rubber pad 12 can contact and abut against the sealing pad 14, completing the sealing process of the opening. During this period, the airbag 15 is also under compression, causing the sealing pad 14 to exert force on the rubber pad 12, thereby completing the overall sealing effect. The frustum-shaped opening located above and the frustum-shaped opening located below form an angle α, where the angle α is 60°. The design of the frustum-shaped opening has an angle, which ensures that when the rubber pad 12 contacts the sealing pad 14, it will slowly open the sealing pad 14 through the airbag 15.

[0029] Among them, combined Figure 8 As shown, a filter screen 10 for filtering impurities is detachably installed at the bottom of the base 6. When fluid passes through the inlet cylinder 2, impurities are quickly filtered by the filter screen 10. Several fixing components 16 are provided between the filter screen 10 and the base 6, including a plug rod 1603 fixed on the filter screen 10 and a mating groove 1601 opened at the bottom of the base 6 for engaging with the plug rod 1603. An opening 1602 is also pre-set on the inner wall of the base 6, wherein the opening 1602 communicates with the corresponding mating groove 1601. A groove is pre-set on the plug rod 1603, and a compression spring 1605 is provided in the groove. The other end of the compression spring 1605 is fixed with a button 1604 that can be snapped into the opening 1602. When installing the filter screen 10, the plug rod 1603 is snapped into the docking groove 1601 to complete the quick positioning installation. At the same time, the button 1604 is snapped into the opening 1602 under the action of the compression spring 1605 to complete the installation. It is worth noting that when the filter screen 10 needs to be disassembled, the water inlet cylinder 2 must first be removed from the valve body 1, and then the button 1604 is pressed from the inside to compress the compression spring 1605 so that it is stored in the groove for subsequent disassembly and use of the filter screen 10.

[0030] Specifically, during the operation of the aluminum angle valve, the valve stem 7 is rotated by turning the handwheel 5, which in turn lowers the valve plate 8 to control the flow rate or on / off state of the medium. As the valve plate 8 moves, the drive gear 1302 contacts and meshes with the rack section 18. Therefore, as the valve plate 8 continues to descend, the drive gear 1302 rotates. When the drive gear 1302 rotates, it gradually drives the rotating shaft 1305 to rotate. In turn, the bevel gear 1304 meshes with the rotating shaft 1303, causing the rotating shaft 1303 to rotate. When the rotating shaft 1303 begins to rotate, the guide gears 1301 mesh again to achieve synchronous rotation of the guide shaft 1101. When the guide shaft 1101 rotates, it synchronously drives the connecting plate 1109 to rotate. This is achieved through the connecting rod 1108... The guide rod 1103 is movable, which pulls the guide rod 1103 to move. When the guide rod 1103 moves, it gradually pulls the return spring 1104 to ensure that it is in a compressed state and further tightens the rubber pad 12. When the rubber plug 9 enters the opening, the rubber pad 12 will be in a tightened state under the action of the abutment component 11 to enter the opening position. When the guide gear 1301 disengages from the rack section 18, the return spring 1104 returns to the initial state, and then the rubber pad 12 returns to the initial position, thus ensuring that the rubber pad 12 can contact and abut against the sealing pad 14 to complete the sealing process of the opening. During this period, the airbag 15 is also in a compressed state, causing the sealing pad 14 to exert force on the rubber pad 12, thereby completing the overall sealing effect.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-temperature aluminum angle valve, comprising a valve body (1) and an inlet cylinder (2) located at the bottom of the valve body (1), wherein an outlet cylinder (3) communicating with the interior of the inlet cylinder (2) is welded to the cylinder body of the inlet cylinder (2), and a valve stem (7) is provided inside the valve body (1), characterized in that: The bottom of the valve stem (7) is equipped with a valve plate (8) for adjusting the flow rate or the on / off state of the medium. A rubber plug (9) is fixed at the bottom of the valve plate (8). A base (6) is fixed inside the water inlet cylinder (2). An opening for medium flow is provided on the base (6), and a filter screen (10) for filtering impurities is detachably installed at the bottom of the base (6). The valve plate (8) includes a base plate (801), an annular plate (802), and a cover plate (803). The annular plate (802) is disposed between the base plate (801) and the cover plate (803) to form a receiving area. The diameter of the annular plate (802) is smaller than the diameter of the base plate (801) and the cover plate (803) to form a receiving groove. A rubber pad (12) is adjustablely disposed in the receiving groove. The abutment assembly (11) for adjusting the rubber pad (12) includes a guide shaft (1101) rotatably disposed in the receiving area, and a plurality of guide blocks (1102) fixed in the receiving area. A guide rod (1103) movably passes through the guide block (1102), and a guide plate (1105) is fixed to one end of the guide rod (1103). The guide plate (1105) passes through the ring plate (802) and is mounted on the inner ring surface of the rubber pad (12). A space is provided between the guide plate (1105) and the guide block (1102). A return spring (1104) is sleeved on the guide rod (1103), and a fixed shaft (1106) is provided at the end of the guide rod (1103). A number of connecting plates (1109) equal to the number of guide blocks (1102) are fixed on the guide shaft (1101). A guide opening (1107) is preset on the connecting plate (1109), and an installation shaft is movable in the guide opening (1107). The same connecting rod (1108) is movably connected between the installation shaft and the corresponding fixed shaft (1106). The guide shaft (1101) moves through the drive assembly.

2. The low-temperature aluminum angle valve according to claim 1, characterized in that: The drive assembly includes a gear assembly (13), wherein the gear assembly (13) includes a rotating shaft (1303) rotatably mounted on the bottom of the cover plate (803) and a rotating shaft (1305) mounted on the top of the cover plate (803) via a bracket. Both the rotating shaft (1303) and the guide shaft (1101) are provided with guide gears (1301), and the two guide gears (1301) mesh with each other for transmission. Both the rotating shaft (1305) and the rotating shaft (1303) are provided with bevel gears (1304), and the two bevel gears (1304) mesh with each other. A drive gear (1302) is also provided on the rotating shaft (1305).

3. A low-temperature aluminum angle valve according to claim 2, characterized in that: The base (6) is fixedly provided with a mounting seat (17) at the top. A rack segment (18) is provided at the position of two-thirds of the way down from the top of the side wall of the mounting seat (17). The rack segment (18) meshes with the drive gear (1302) for transmission.

4. A low-temperature aluminum angle valve according to claim 1, characterized in that: Several fixing components (16) are provided between the filter screen (10) and the base (6), including a plug rod (1603) fixed on the filter screen (10) and a docking groove (1601) opened at the bottom of the base (6) for engaging with the plug rod (1603). An opening (1602) is also pre-set on the inner wall of the base (6), wherein the opening (1602) communicates with the corresponding docking groove (1601). A groove is pre-set on the plug rod (1603), and a compression spring (1605) is provided in the groove. A button (1604) that can be engaged with the opening (1602) is fixed at the other end of the compression spring (1605).

5. A low-temperature aluminum angle valve according to claim 1, characterized in that: The base (6) has a pre-set opening including a cylindrical opening and two frustum-shaped openings. The two frustum-shaped openings are located above the cylindrical opening and communicate with it. The frustum-shaped opening at the top is inverted, and an airbag (15) is provided on the inner wall of the frustum-shaped opening. Several arc-shaped sealing pads (14) are fixed on the airbag (15), and the several sealing pads (14) form an annular body.

6. A low-temperature aluminum angle valve according to claim 5, characterized in that: The frustum-shaped opening located above forms an angle α with the frustum-shaped opening located below, wherein the angle α is 60°.

7. A low-temperature aluminum angle valve according to claim 1, characterized in that: The valve body (1) is provided with a handwheel (5) for adjusting the valve stem (7), and a cold box drip tray (4) is provided on the valve body (1).

8. A low-temperature aluminum angle valve according to claim 3, characterized in that: The front end of the guide rod (1103) is pre-set with an inverted "U" shaped mounting groove for snapping onto the guide plate (1105), and a hand-tightening bolt for locking the guide plate (1105) is threaded onto the guide rod (1103).

9. A low-temperature aluminum angle valve according to claim 5, characterized in that: The top of the base (6) is level with the lowest point of the water outlet of the water outlet cylinder (3).

10. A low-temperature aluminum angle valve according to claim 8, characterized in that: The ring plate (802) has a pre-set limit opening on its arc surface for the guide plate (1105) to pass through.

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