Novel water curtain valve structure

Abstract

The utility model provides a novel water curtain valve structure, and belongs to the technical field of fluid control. The novel water curtain valve structure comprises a valve body assembly and a driving device, the valve body assembly comprises a shell, a valve sleeve and a valve element assembly, the shell is provided with a water inlet channel, a water outlet channel, a valve element cavity and a first water containing cavity communicated with the water outlet channel, the valve sleeve is integrally formed, and the valve sleeve is arranged in the valve element cavity in a sealed and sleeved mode; the valve element assembly comprises a plunger and a valve rod, the plunger is arranged in the valve sleeve in a sealed and sleeved mode and can move in the axial direction of the valve sleeve, a second water passing hole is formed in the annular side wall of the plunger, and when the plunger is at the first position, the second water passing hole can move in the axial direction of the valve sleeve. When the plunger is located at the first position, the second water passing hole coincides with the first water passing hole, the water inlet channel is communicated with the water outlet channel, and one end of the valve rod is fixedly connected with one end of the plunger.

Description

Technical Field

[0001] This utility model relates to the field of fluid control technology, and in particular to a novel water curtain valve structure. Background Technology

[0002] Water curtain valves are mainly used in medium and low pressure water systems to control the rapid on / off function of fluid media in pipelines. Existing water curtain valves have the following structural shortcomings: the valve seat, valve sleeve, and sealing sleeve are placed sequentially in the valve body, and the coaxiality between the three parts is difficult to guarantee, which leads to wear and reduced sealing performance, resulting in leakage. Utility Model Content

[0003] The purpose of this utility model is to provide a new type of water curtain valve structure, which solves the problem that the coaxiality of existing water curtain valves is difficult to guarantee and is prone to wear, thereby improving the coaxiality of the water curtain valve.

[0004] To achieve the objective of this utility model, the following technical solution is adopted:

[0005] According to one aspect of this utility model, a novel water curtain valve structure is provided, including a valve body assembly and a driving device. The valve body assembly includes a housing, a valve sleeve, and a valve core assembly. The housing has an inlet channel, an outlet channel, a valve core cavity, and a first water-containing cavity communicating with the outlet channel. The valve sleeve is integrally formed and is sealed within the valve core cavity. The annular sidewall of the valve sleeve has at least one first water passage hole at the first water-containing cavity. The valve core assembly includes a plunger and a valve stem. The plunger is sealed within the valve sleeve and can move axially along the valve sleeve. The annular sidewall of the plunger has a second water passage hole. In the first position, there is a gap between the second water passage hole and the first water passage hole, and the inlet channel is blocked from the first water-containing cavity and the outlet channel. In the second position, the second water passage hole coincides with the first water passage hole, and the inlet channel, the first water-containing cavity, and the outlet channel are connected. One axial end of the valve stem is fixedly connected to the center of one end of the plunger. The driving device is fixedly connected to the housing and to the other end of the valve stem.

[0006] According to one embodiment of the present invention, the valve sleeve is a through-cylinder shape, and the inner wall of one end of the valve sleeve has a first annular step. The first annular step is provided with a first conical valve surface, and the outer wall surface of the plunger has a second annular step. The second annular step is provided with a second conical valve surface that matches the first conical valve surface. When the plunger is in the first position, the second conical valve surface and the first conical valve surface are in a sealing contact.

[0007] According to one embodiment of the present invention, the valve body assembly further includes at least one first sealing ring, the inner wall of the other end of the valve sleeve has a third annular step, the first sealing ring is disposed on the third annular step, and the inner edge surface of the first sealing ring abuts against the outer wall surface of the plunger.

[0008] According to one embodiment of the present invention, the valve body assembly further includes an annular pressure sleeve and a support sleeve. The inner wall of the valve core cavity has a fourth annular step. One axial end of the valve sleeve abuts against the fourth annular step. One axial end of the annular pressure sleeve abuts against the other axial end of the valve sleeve. One axial end of the support sleeve abuts against the other axial end of the annular pressure sleeve. One end of the drive device abuts against the other axial end of the support sleeve. The drive device is fixed to the housing by a plurality of bolts.

[0009] According to one embodiment of the present invention, the valve body assembly further includes a second sealing ring, one axial end face of the second sealing ring abutting against the other end of the valve sleeve, and the other axial end face of the second sealing ring abutting against one end of the annular pressure sleeve.

[0010] According to one embodiment of the present invention, an annular pressure sleeve surrounds the valve stem, and the annular pressure sleeve, valve sleeve, plunger, valve stem and support sleeve together surround a second water-containing cavity. The plunger has a plurality of third water passage holes, which connect the second water-containing cavity and the water inlet channel. The water in the water inlet channel applies pressure to the plunger in a first direction, and the water in the second water-containing cavity applies pressure to the plunger in a second direction opposite to the first direction.

[0011] According to one embodiment of the present invention, the shell is further provided with a third water-containing cavity, and the annular pressure sleeve is provided with a fourth water passage hole at the position of the third water-containing cavity. The water inlet channel is connected to the third water-containing cavity through the third water passage hole, the second water-containing cavity and the fourth water passage hole.

[0012] According to one embodiment of the present invention, the valve body assembly further includes a first bushing, which is sealed and sleeved on the valve stem and fixed to the center of the support sleeve.

[0013] According to one embodiment of the present invention, the valve body assembly further includes a drain pipe, a cavity is provided between the support sleeve and the drive device, a through hole is provided on the support sleeve corresponding to the cavity, and one end of the drain pipe is connected to the through hole.

[0014] According to one embodiment of the present invention, the driving device is a pneumatic device or a hydraulic device, the other axial end of the valve stem passes through the driving device, and the piston inside the driving device is fixed to the valve stem; or the other axial end of the valve stem is connected to the actuating rod of the driving device.

[0015] One embodiment of this utility model has the following advantages or beneficial effects:

[0016] This utility model discloses a novel water curtain valve structure, comprising a valve body assembly and a drive device. The valve body assembly includes a housing, a valve sleeve, and a valve core assembly. The housing has an inlet channel, an outlet channel, a valve core cavity, and a first water-containing cavity communicating with the outlet channel. The valve sleeve is integrally formed and is sealed within the valve core cavity. The annular sidewall of the valve sleeve has at least one first water passage hole located at the first water-containing cavity. The valve core assembly includes a plunger and a valve stem. The plunger is sealed within the valve sleeve and can move axially along the valve sleeve. The annular sidewall of the plunger has a second water passage hole. In the first position, there is a gap between the second water passage hole and the first water passage hole, and the inlet channel is blocked from the first water-containing cavity and the outlet channel. In the second position, the second water passage hole coincides with the first water passage hole, and the inlet channel, the first water-containing cavity, and the outlet channel are connected. One axial end of the valve stem is fixedly connected to the center of one end of the plunger. The drive device is fixedly connected to the housing and to the other end of the valve stem. The novel water curtain valve structure of this utility model features an integrated valve sleeve, which ensures higher coaxiality, improves the overall valve sealing performance, and reduces the risk of leakage. Attached Figure Description

[0017] The above and other features and advantages of this invention will become more apparent from a detailed description of exemplary embodiments with reference to the accompanying drawings.

[0018] Figure 1 This is a side view of a novel water curtain valve structure according to an exemplary embodiment.

[0019] Figure 2 This is a cross-sectional view of a novel water curtain valve structure according to an exemplary embodiment.

[0020] Figure 3 yes Figure 2 An enlarged view of the valve sleeve and plunger is shown.

[0021] Figure 4 yes Figure 2 A magnified view of part A in the image.

[0022] The reference numerals in the attached figures are explained as follows:

[0023] 1. Valve body assembly; 11. Housing; 111. Inlet channel; 112. Outlet channel; 113. First water chamber; 114. Fourth annular step; 115. Third water chamber; 12. Valve sleeve; 121. First water passage hole; 122. First annular step; 1221. First conical valve surface; 123. Third annular step; 13. Valve core assembly; 131. Piston; 1311. Second water passage hole; 1312. Second conical valve surface; 1313. Third water passage hole; 1314. Compression nut; 132. Valve stem; 14. First sealing ring; 15. Annular pressure sleeve; 151. Second water chamber; 152. Fourth water passage hole; 16. Support sleeve; 161. Cavity; 17. Second sealing ring; 18. First bushing; 19. Drain pipe; 2. Drive device; 21. Piston. Detailed Implementation

[0024] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0025] The terms “a,” “one,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended meaning of inclusion and that other elements / components / etc. may exist in addition to the listed elements / components / etc.

[0026] like Figure 1-4 As shown in the figure, a novel water curtain valve structure according to an embodiment of the present invention includes a valve body assembly 1 and a drive device 2.

[0027] The valve body assembly 1 includes a housing 11, a valve sleeve 12, and a valve core assembly 13. The housing 11 has an inlet channel 111, an outlet channel 112, a valve core cavity, and a first water-containing cavity 113 that communicates with the outlet channel 112.

[0028] The valve sleeve 12 is integrally formed and is sealed inside the valve core cavity. The annular sidewall of the valve sleeve 12 is provided with at least one first water passage hole 121 at the first water receiving cavity 113. The valve core assembly 13 includes a plunger 131 and a valve stem 132. The plunger 131 is sealed inside the valve sleeve 12 and can move along the axial direction of the valve sleeve 12. The annular sidewall of the plunger 131 is provided with a second water passage hole 1311.

[0029] When the plunger 131 is in the first position, there is a gap between the second water passage 1311 and the first water passage 121, and the water inlet channel 111 is blocked from the first water chamber 113 and the water outlet channel 112, so the water in the water inlet channel 111 cannot enter the first water chamber 113.

[0030] When the plunger 131 is in the second position, the second water passage 1311 overlaps and connects with the first water passage 121, and the water inlet channel 111, the first water chamber 113 and the water outlet channel 112 are connected.

[0031] One axial end of the valve stem 132 is fixedly connected to the center of one end of the plunger 131. For example, a clamping nut 1314 is fixedly connected to the lower end of the valve stem 132. The plunger 131 has a threaded hole at the center of one end. The valve stem 132 is fixedly connected to the threaded hole of the plunger 131 through the clamping nut 1314. During installation, thread-locking adhesive is applied to the threaded part at the lower outer end of the clamping nut 1314 and then it is fixedly connected to the threaded hole of the plunger 131, thereby fixing the valve stem 132 and the plunger 131 to prevent loosening.

[0032] The drive device 2 is fixedly connected to the housing 11, and the other end of the drive device 2 is fixedly connected to the valve stem 132 to drive the valve stem 132 and drive the plunger 131 to move axially.

[0033] The novel water curtain valve structure of this invention features a one-piece valve sleeve 12. This integrated structure ensures higher coaxiality, improving the overall valve sealing performance and reducing the risk of leakage. Furthermore, existing valve sleeves and seats are detachably connected, and the valve seat is located at the bottom of the water curtain valve. When the coaxiality between the valve seat and the valve sleeve decreases, maintenance is required. The low position of the valve seat makes disassembly and repair difficult, leading to inconvenient maintenance. In contrast, the novel water curtain valve structure of this invention, with its one-piece valve sleeve 12, achieves maintenance-free coaxiality, extending service life and avoiding the problem of inconvenient maintenance.

[0034] like Figure 2 , 3 As shown in Figures 1 and 4, in a preferred embodiment of this utility model, the valve sleeve 12 is a through-cylinder shape, and the inner wall of one end of the valve sleeve 12 has a first annular step 122, and the first annular step 122 is provided with a first conical valve surface 1221.

[0035] The outer wall of the plunger 131 has a second annular step, and the second annular step is provided with a second cone valve surface 1312 that matches the first cone valve surface 1221. When the plunger 131 is in the first position, the second cone valve surface 1312 and the first cone valve surface 1221 are in a sealing contact, preventing water in the water inlet channel 111 from entering the first water chamber 113. When the plunger 131 is in the second position, the second cone valve surface 1312 is separated from the first cone valve surface 1221, allowing water in the water inlet channel 111 to enter the first water chamber 113.

[0036] A cobalt-based alloy layer is welded to the first cone valve surface 1221 and / or the second cone valve surface 1312. The cobalt-based alloy layer has wear resistance, corrosion resistance and high temperature resistance, thereby improving the sealing performance and service life of the cone valve surface after closure.

[0037] like Figure 2 , 3 As shown, in a preferred embodiment of the present invention, the valve body assembly 1 further includes at least one first sealing ring 14, and the inner wall of the other end of the valve sleeve 12 has a third annular step 123. The first sealing ring 14 is disposed on the third annular step 123, and the inner edge surface of the first sealing ring 14 abuts against the outer wall surface of the plunger 131. The first sealing ring 14 prevents water in the first water-containing cavity 113 from leaking to other chambers or to the outside.

[0038] like Figure 2 As shown, in a preferred embodiment of the present invention, the valve body assembly 1 further includes an annular pressure sleeve 15 and a support sleeve 16. The inner wall of the valve core cavity has a fourth annular step 114. One axial end of the valve sleeve 12 abuts against the fourth annular step 114, one axial end of the annular pressure sleeve 15 abuts against the other axial end of the valve sleeve 12, one axial end of the support sleeve 16 abuts against the other axial end of the annular pressure sleeve 15, one end of the drive device 2 abuts against the other axial end of the support sleeve 16, and the drive device 2 is fixed to the housing 11 by multiple bolts, thereby pressing and fixing the valve sleeve 12, the annular pressure sleeve 15 and the support sleeve 16.

[0039] like Figure 2 As shown, in a preferred embodiment of the present invention, the outer wall of the support sleeve 16 has a step, and the step surface abuts against one end of the shell 11 to improve stability.

[0040] like Figure 2 As shown, in a preferred embodiment of this utility model, the valve body assembly 1 further includes a second sealing ring 17. One axial end face of the second sealing ring 17 abuts against the other end of the valve sleeve 12, and the other axial end face of the second sealing ring 17 abuts against one end of the annular pressure sleeve 15. The second sealing ring 17 serves as a sealing height compensation function, ensuring that the pressure sleeve 15 tightly presses against the valve sleeve 12, making the overall structure more stable and robust, and reducing the likelihood of internal loosening due to insufficient compression between parts.

[0041] like Figure 2As shown, in a preferred embodiment of this utility model, an annular pressure sleeve 15 surrounds the valve stem 132. The annular pressure sleeve 15, valve sleeve 12, plunger 131, valve stem 132, and support sleeve 16 together surround a second water-containing cavity 151. The plunger 131 has multiple third water passage holes 1313. The third water passage holes 1313 connect the second water-containing cavity 151 and the water inlet channel 111. The water in the water inlet channel 111 applies pressure to the plunger 131 in a first direction, and the water in the second water-containing cavity 151 applies pressure to the plunger 131 in a second direction opposite to the first direction, so as to assist the drive device 2 in closing the valve. That is, the drive device 2 assists the drive device 2 in driving the plunger 131 from the second position to the first position, avoiding the drive device 2 from being subjected to excessive water pressure, thereby improving the service life of the drive device.

[0042] like Figure 2 As shown, in a preferred embodiment of this utility model, the housing 11 is further provided with a third water-receiving cavity 115, and the annular pressure sleeve 15 is provided with a fourth water passage hole 152 at the position of the third water-receiving cavity 115. The water inlet channel 111 communicates with the third water-receiving cavity 115 through the third water passage hole 1313, the second water-receiving cavity 151, and the fourth water passage hole 152. The fourth water passage hole 152 is used to reduce the impact of water on the annular pressure sleeve 15 when water enters the second water-receiving cavity 151. Water enters the third water-receiving cavity 115 through the fourth water passage hole 152 to reduce the water pressure on the annular pressure sleeve 15. The third water-receiving cavity 115 has the function of dispersing the water pressure in the second water-receiving cavity 151, avoiding the annular pressure sleeve 15 from being subjected to excessive water pressure, thereby improving the service life of the annular pressure sleeve 15.

[0043] like Figure 2 As shown, in a preferred embodiment of this utility model, the valve body assembly 1 further includes a first bushing 18, which is sealed around the valve stem 132 and fixed to the center of the support sleeve 16 to improve the coaxiality of the valve stem 132. For example, the first bushing 18 is fixed to the support sleeve 16 by bolts, and the inner wall of the first bushing 18 has a sealing ring, the inner edge of which abuts against the valve stem 132.

[0044] like Figure 2 As shown, in a preferred embodiment of this utility model, the valve body assembly 1 further includes a drain pipe 19, and a cavity 161 is provided between the support sleeve 16 and the drive device 2. The support sleeve 16 has a through hole corresponding to the cavity 161, and one end of the drain pipe 19 communicates with the through hole. When the sealing ring on the first bushing 18 fails, water in the second water chamber 151 enters the cavity 161 and flows out through the through hole and the drain pipe 19, making it convenient for maintenance personnel to promptly monitor the condition of the sealing ring on the first bushing 18.

[0045] like Figure 2As shown, in a preferred embodiment of this utility model, the driving device 2 is a pneumatic or hydraulic device, and the other axial end of the valve stem 132 passes through the driving device 2. The piston 21 inside the driving device 2 is fixed to the valve stem 132. For example, the first air inlet of the driving device 2 fills the interior with air, and the air pressure drives the piston 21 and causes the valve stem 132 to move in a first direction; the second air inlet of the driving device 2 fills the interior with air, and the air pressure drives the piston 21 and causes the valve stem 132 to move in a second direction. For example, a locking nut is also included. The valve stem 132 has a step and a thread that mates with the locking nut. One end of the piston 21 abuts against the step, the locking nut is threadedly connected to the valve stem 132, and the locking nut abuts against the other end of the piston 21, thereby fixing the piston 21 to the valve stem 132.

[0046] Of course, the structure of the drive device 2 is not limited to the above structure. For example, the actuating rod of the drive device 2 and the valve stem 132 are two independent components, and the other axial ends of the actuating rod of the drive device 2 and the valve stem 132 are connected by a coupling.

[0047] In this embodiment of the invention, the term "multiple" refers to two or more, unless otherwise explicitly defined. The terms "install," "connect," and "fix" should be interpreted broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0048] In the description of the embodiments of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0049] In this specification, the terms "an embodiment," "a preferred embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel water curtain valve structure, characterized by, include: A valve body assembly (1) includes a housing (11), a valve sleeve (12), and a valve core assembly (13). The housing (11) has an inlet channel (111), an outlet channel (112), a valve core cavity, and a first water-receiving cavity (113) communicating with the outlet channel (112). The valve sleeve (12) is integrally formed and is sealed within the valve core cavity. The annular sidewall of the valve sleeve (12) has at least one first water passage hole (121) located in the first water-receiving cavity (113). The valve core assembly (13) includes a plunger (131) and a valve stem (132). The plunger (131) is sealed within the valve sleeve (12), and the plunger (131) can move along the valve core cavity. The valve sleeve (12) moves axially. The annular sidewall of the plunger (131) is provided with a second water passage hole (1311). When the plunger (131) is in the first position, there is a gap between the second water passage hole (1311) and the first water passage hole (121), and the water inlet channel (111) is blocked from the first water chamber (113) and the water outlet channel (112). When the plunger (131) is in the second position, the second water passage hole (1311) coincides with the first water passage hole (121), and the water inlet channel (111), the first water chamber (113) and the water outlet channel (112) are connected. One axial end of the valve stem (132) is fixedly connected to the center of one end of the plunger (131). A drive device (2) is fixedly connected to the housing (11) and the other end of the valve stem (132) is fixedly connected to the other end of the drive device (2).

2. The novel water curtain valve structure according to claim 1, characterized in that, The valve sleeve (12) is a through-cylinder shape. One end of the valve sleeve (12) has a first annular step (122) on its inner wall. The first annular step (122) is provided with a first conical valve surface (1221). The outer wall of the plunger (131) has a second annular step. The second annular step is provided with a second conical valve surface (1312) that matches the first conical valve surface (1221). When the plunger (131) is in the first position, the second conical valve surface (1312) and the first conical valve surface (1221) are in a sealing contact.

3. The novel water curtain valve structure according to claim 2, wherein, The valve body assembly (1) further includes at least one first sealing ring (14), and the inner wall of the other end of the valve sleeve (12) has a third annular step (123). The first sealing ring (14) is disposed on the third annular step (123), and the inner edge surface of the first sealing ring (14) abuts against the outer wall surface of the plunger (131).

4. The novel water curtain valve structure according to claim 1, wherein, The valve body assembly (1) further includes an annular pressure sleeve (15) and a support sleeve (16). The inner wall of the valve core cavity has a fourth annular step (114). One axial end of the valve sleeve (12) abuts against the fourth annular step (114). One axial end of the annular pressure sleeve (15) abuts against the other axial end of the valve sleeve (12). One axial end of the support sleeve (16) abuts against the other axial end of the annular pressure sleeve (15). One end of the drive device (2) abuts against the other axial end of the support sleeve (16). The drive device (2) is fixed to the housing (11) by a plurality of bolts.

5. The novel water curtain valve structure according to claim 4, characterized in that, The valve body assembly (1) further includes a second sealing ring (17), one axial end face of the second sealing ring (17) abuts against the other end of the valve sleeve (12), and the other axial end face of the second sealing ring (17) abuts against one end of the annular pressure sleeve (15).

6. The novel water curtain valve structure according to claim 4, wherein, The annular pressure sleeve (15) surrounds the valve stem (132). The annular pressure sleeve (15), the valve sleeve (12), the plunger (131), the valve stem (132), and the support sleeve (16) together enclose a second water-containing cavity (151). The plunger (131) has multiple third water passage holes (1313). The third water passage holes (1313) connect the second water-containing cavity (151) and the water inlet channel (111). The water in the water inlet channel (111) applies pressure to the plunger (131) in a first direction. The water in the second water-containing cavity (151) applies pressure to the plunger (131) in a second direction opposite to the first direction.

7. The novel water curtain valve structure according to claim 6, wherein, The housing (11) is also provided with a third water-containing cavity (115). The annular pressure sleeve (15) is provided with a fourth water passage hole (152) at the position of the third water-containing cavity (115). The water inlet channel (111) is connected to the third water-containing cavity (115) through the third water passage hole (1313), the second water-containing cavity (151) and the fourth water passage hole (152).

8. The novel water curtain valve structure according to claim 4, wherein, The valve body assembly (1) further includes a first bushing (18), which is sealed around the valve stem (132) and fixed to the center of the support sleeve (16).

9. The novel water curtain valve structure according to claim 8, characterized in that, The valve body assembly (1) further includes a drain pipe (19), and there is a cavity (161) between the support sleeve (16) and the drive device (2). The support sleeve (16) has a through hole corresponding to the cavity (161), and one end of the drain pipe (19) is connected to the through hole.

10. The novel water curtain valve structure according to any one of claims 1-9, characterized in that, The drive device (2) is a pneumatic or hydraulic device. The other axial end of the valve stem (132) passes through the drive device (2). The piston (21) inside the drive device (2) is fixed to the valve stem (132); or the other axial end of the valve stem (132) is connected to the actuating rod of the drive device (2).

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