Slide valve type water curtain valve assembly structure

Abstract

The utility model provides a slide valve type water curtain valve assembly structure, which relates to the technical field of water curtain valves and mainly comprises a valve body, a valve sleeve, a valve core and a sealing ring. The valve body is provided with a water channel. The valve sleeve extends into the valve body, and a cavity communicated with the water flow channel is formed in the valve sleeve; part of the valve element is assembled in the cavity, and the valve element moves away from or close to the water flow channel in the axial direction of the valve sleeve so as to control opening or closing of the water flow channel. The sealing ring is embedded in the cavity wall of the cavity and used for being in sealing connection with the valve element. The sealing ring comprises a supporting ring, a sliding ring and an elastic body. The supporting ring and the sliding ring are arranged in the axial direction of the valve sleeve and are in supporting connection. The elastic body is filled between the sliding ring and the inner wall of the cavity. According to the embodiment, opening and closing of the valve are achieved, the structure is simple, the anti-pollution capacity is high, the maintenance cost is low, the sealing performance is better, rapid opening and closing can be achieved, and the valve is suitable for various medium and temperature working conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of water curtain valves, in particular to a water curtain valve assembly structure in the form of a sliding valve. Background Art

[0002] The water curtain valve assembly structure is mainly used to control the rapid on-off function of pipeline fluid media in the rolling mill cooling and water curtain working system.

[0003] The common water curtain valve assembly structure is mostly a cone valve port hard seal type. When used in a medium containing a large amount of particulate impurities, the cone valve port is easily eroded and scratched. When the particulate impurities are squeezed on the valve port sealing surface, scratches and pits will also appear, which can easily lead to valve port seal leakage and valve port failure. In addition, the cone valve port hard seal type parts are difficult to repair, the repair cost is high, and the applicable working conditions are limited. Utility Model Content

[0004] In view of the shortcomings of the existing methods, the present application provides a sliding valve type water curtain valve assembly structure to solve the technical problems existing in the prior art of the water curtain valve, such as valve port seal leakage causing valve port failure, high repair cost, and limited applicable working conditions.

[0005] An embodiment of the present application provides a water curtain valve assembly structure in the form of a sliding valve, comprising: a valve body, having a water flow channel; a valve sleeve, extending into the valve body, the valve sleeve having a chamber connected to the water flow channel; a valve core, part of which is assembled in the chamber, the valve core moves away from or close to the water flow channel along the axial direction of the valve sleeve to control the conduction or closing of the water flow channel; a sealing ring, embedded in the cavity wall of the cavity, for sealingly connecting with the valve core; wherein the sealing ring comprises a support ring, a slip ring and an elastomer; the support ring and the slip ring are arranged along the axial direction of the valve sleeve and are supported and connected, and the elastomer is filled between the slip ring and the inner wall of the cavity.

[0006] As an optional implementation, a first conical surface is provided on a side of the support ring facing the slip ring; a second conical surface is provided on a side of the slip ring facing the support ring; and the first conical surface and the second conical surface fit tightly together.

[0007] As an optional embodiment, the cavity wall of the chamber has an annular groove arranged along the circumferential direction, and the sealing ring is embedded in the annular groove; the slip ring has an installation groove arranged along the circumferential direction, the installation groove opening faces the bottom of the annular groove, and the elastomer is embedded in the installation groove.

[0008] As an optional embodiment, the valve core includes a valve stem and a valve column coaxially connected; the valve column is assembled in the chamber, and the valve column is slidably connected to the chamber wall and the sealing ring; the valve stem is located on the side of the valve column opposite to the water flow channel; wherein, along the axial direction of the valve sleeve, a water containing space and a balancing space are respectively arranged on opposite sides of the valve column, and a plurality of the sealing rings are arranged between the water containing space and the balancing space.

[0009] As an optional embodiment, the sealing ring includes a first sealing ring and a second sealing ring that are relatively far apart from each other; the support ring of the first sealing ring and the support ring of the second sealing ring are close to each other in the axial direction of the valve sleeve; the sliding ring of the first sealing ring and the sliding ring of the second sealing ring are far apart from each other in the axial direction of the valve sleeve.

[0010] As an optional embodiment, the valve column has a plurality of connecting channels connecting the water containing space and the balance space, the plurality of connecting channels are arranged around the axis of the valve column, the connecting channels are a linear structure, and the plurality of connecting channels are inclined toward the axis of the valve column.

[0011] As an optional implementation, the valve sleeve includes a first set of structures and a second set of structures connected to each other, a buffer cavity is formed between the first set of structures and the second set of structures, and the buffer cavity has a drain hole communicating with the outside.

[0012] As an optional embodiment, the sliding valve type water curtain valve assembly structure also includes: a piston, which is sleeved on the outside of the valve stem and moves synchronously with the valve stem; the chamber is formed in the first set of structures; a piston cavity is formed in the second set of structures, the valve stem passes through the piston cavity, and the piston is arranged in the piston cavity.

[0013] As an optional implementation, the elastomer is an O-type elastic ring.

[0014] As an optional implementation, the material of the support ring includes polytetrafluoroethylene.

[0015] The present application provides a water curtain valve assembly structure in the form of a sliding valve. The technical solution provided by the embodiments of the present application brings at least the following beneficial effects:

[0016] The support ring of the sealing ring is located on the low-pressure side, and the slip ring is located on the high-pressure side. The support ring and the slip ring cooperate to form a stable support sealing structure. At the same time, the elastomer squeezes the slip ring, so that the slip ring tightly holds the valve core and forms a sliding sealing connection to realize the opening and closing of the valve. It has a simple structure, strong anti-pollution ability, low maintenance cost, better sealing, and can achieve rapid opening and closing. It is suitable for a variety of media and temperature conditions.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A schematic diagram of the longitudinal cross-sectional structure of a water curtain valve assembly structure in the form of a sliding valve provided in an embodiment of the present application;

[0020] Figure 2 for Figure 1 A partial enlarged view of point C in the middle;

[0021] Figure 3 for Figure 1 A partial enlarged view of point D in the middle.

[0022] Reference numerals and corresponding descriptions:

[0023] 1: valve body; 11: water flow channel; 12: water inlet end; 13: water outlet end;

[0024] 2: valve sleeve; 21: chamber; 22: annular groove; 23: first set of structures; 24: second set of structures; 25: buffer chamber; 26: drain hole; 27: piston chamber;

[0025] 3: valve core; 31: valve stem; 32: valve column; 33: communication channel;

[0026] 4: sealing ring; 41: supporting ring; 42: sliding ring; 43: elastic body; 44: mounting groove; 45: first cone surface; 46: second cone surface; 4A: first sealing ring; 4B: second sealing ring;

[0027] 5: Water storage space;

[0028] 6: Balance space;

[0029] 7: Piston. DETAILED DESCRIPTION

[0030] The present application is described in detail below, and examples of embodiments of the present application are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. In addition, if the detailed description of the known technology is unnecessary for the features of the present application shown, it will be omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application.

[0031] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, elements and / or components, but does not exclude the presence or addition of one or more other features, elements, components and / or groups thereof. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0032] like Figure 1-3 As shown, the embodiment of the present application provides a sliding valve type water curtain valve assembly structure, which mainly includes a valve body 1, a valve sleeve 2, a valve core 3 and a sealing ring 4. The valve body 1 has a water flow channel 11; the valve sleeve 2 extends into the valve body 1, and the valve sleeve 2 has a chamber 21 connected to the water flow channel 11; part of the valve core 3 is assembled in the chamber 21, and the valve core 3 moves away from or close to the water flow channel 11 along the axial direction of the valve sleeve 2 to control the conduction or closing of the water flow channel 11; the sealing ring 4 is embedded in the cavity wall of the cavity 21, and is used for sealing connection with the valve core 3; wherein the sealing ring 4 includes a support ring 41, a sliding ring 42 and an elastic body 43; the support ring 41 and the sliding ring 42 are arranged along the axial direction of the valve sleeve 2 and the two are supported and connected, and the elastic body 43 is filled between the sliding ring 42 and the cavity wall of the cavity 21.

[0033] In this embodiment, the slide valve type water curtain valve assembly structure is vertically arranged on a horizontal plane. The water flow channel 11 is arranged in the valve body 1, and the left side of the valve body 1 is provided with a water inlet end 12 of the water flow channel 11 of the valve body 1, and the right side of the valve body 1 is provided with a water outlet end 13 of the water flow channel 11 of the valve body 1, that is, water enters the water flow channel 11 from the left side of the valve body 1 and flows out from the right side of the valve body 1.

[0034] The chamber 21 extends axially along the valve sleeve 2. The valve sleeve 2 is vertically arranged and embedded in the valve body 1, and the bottom end of the chamber 21 is in communication with the water flow channel 11. The valve core 3 is assembled in the chamber 21 and extends axially along the chamber 21. The valve core 3 approaches or moves away from the water flow channel 11 in the vertical direction. Furthermore, the valve core 3 moves between a first position and a second position. When the valve core 3 is in the first position, the valve core 3 is at the lowest position that can be moved, and the water flow channel 11 is closed; when the valve core 3 is in the second position, the valve core 3 is at the highest position that can be moved, and the water flow channel 11 is open.

[0035] The cavity wall of the chamber 21 is the sleeve wall of the valve sleeve 2. The sealing ring 4 is embedded in the inner side of the sleeve wall of the valve sleeve 2, and the inner side of the sealing ring 4 protrudes from the inner wall of the valve sleeve 2 or is flush with the inner wall of the valve sleeve 2 to achieve a sealed connection with the valve core 3.

[0036] Through the sliding valve type water curtain valve assembly structure provided in the embodiment of the present application, the support ring 41 of the sealing ring 4 is located on the low-pressure side, and the sliding ring 42 is located on the high-pressure side. The support ring 41 and the sliding ring 42 cooperate to form a stable supporting sealing structure. At the same time, the elastomer 43 squeezes the sliding ring 42, so that the sliding ring 42 tightly holds the valve core 3 and forms a sliding sealing connection to realize the opening and closing of the valve. The structure is simple, the anti-pollution ability is strong, the maintenance cost is low, the sealing performance is better, and the rapid opening and closing can be realized. It is suitable for a variety of media and temperature conditions.

[0037] As an optional implementation, a first conical surface 45 is provided on the side of the support ring 41 facing the slip ring 42 ; a second conical surface 46 is provided on the side of the slip ring 42 facing the support ring 41 ; the first conical surface 45 and the second conical surface 46 fit tightly together.

[0038] Based on the above embodiments, in this embodiment, the support ring 41, the slip ring 42 and the elastic body 43 are all annular structures. The support ring 41 is provided with a conical surface with a low inner side and a high outer side, i.e., a first conical surface 45, on the side facing the slip ring 42; the slip ring 42 is provided with a conical surface with a low inner side and a high outer side, i.e., a second conical surface 46, on the side facing the support ring 41; in the longitudinal section, the first conical surface 45 and the second conical surface 46 are both planes inclined to the left and downward. Alternatively, the support ring 41 is provided with a conical surface with a high inner side and a low outer side, i.e., a first conical surface 45, on the side facing the slip ring 42; the slip ring 42 is provided with a conical surface with a high inner side and a low outer side, i.e., a second conical surface 46, on the side facing the support ring 41; in the longitudinal section, the first conical surface 45 and the second conical surface 46 are both planes inclined to the right and downward.

[0039] With the above solution, the first conical surface 45 and the second conical surface 46 are in contact with each other, and the conical surfaces of the support ring 41 and the slide ring 42 cooperate with each other to support each other, forming a stable support structure to improve the pressure bearing capacity and sealing ability.

[0040] like Figure 1-3 As shown, as an optional embodiment, the cavity wall of the chamber 21 has an annular groove 22 arranged along the circumferential direction, and the sealing ring 4 is embedded in the annular groove 22; the slip ring 42 has a mounting groove 44 arranged along the circumferential direction, the mounting groove 44 opens toward the bottom of the annular groove 22, and the elastomer 43 is embedded in the mounting groove 44.

[0041] Based on the above embodiments, in this embodiment, the valve sleeve 2 and the chamber 21 are both cylindrical structures as a whole. The annular groove 22 is an annular structure. The radial cross section of the annular groove 22 is rectangular. The slip ring 42 and the support ring 41 are embedded in the annular groove 22 one above the other, for example, the bottom surface of the slip ring 42 abuts against the top surface of the support ring 41; or, the top surface of the slip ring 42 abuts against the bottom surface of the support ring 41.

[0042] A mounting groove 44 is provided on one side of the sliding ring 42 facing the bottom of the annular groove 22, and the mounting groove 44 is recessed in a direction away from the bottom of the annular groove 22, so as to form a space for accommodating the elastic body 43 between the mounting groove 44 and the annular groove 22. The radial cross section of the mounting groove 44 is rectangular, and the elastic body 43 is embedded in the mounting groove 44, and the inner side wall of the elastic body 43 is elastically abutted against the bottom of the mounting groove 44, and the outer side wall of the elastic body 43 is elastically abutted against the bottom of the annular groove 22.

[0043] The elastomer 43 can be made of rubber elastic material. The inner and outer sides of the elastomer 43 are both sealing surfaces. The inner side of the slip ring 42 is used to achieve a sliding sealing connection with the valve column 32. An installation groove 44 is provided on the outer side of the slip ring 42 for installing the elastomer 43, so that the slip ring 42 wraps the elastomer 43 on three sides to protect the elastomer 43. The support ring 41 supports and protects the slip ring 42, and the support ring 41 is located on the low-pressure side.

[0044] The size of the elastomer 43 is designed to be slightly larger than the size of the mounting groove 44, so that the elastomer 43 undergoes appropriate elastic deformation (i.e., interference fit). The inner and outer sides of the elastomer 43 are respectively pressed and matched with the bottom diameter surface of the mounting groove 44 of the slip ring 42 and the bottom diameter surface of the annular groove 22 of the valve sleeve 2 to form a sealed connection. At the same time, the elastomer 43 squeezes the slip ring 42, so that the slip ring 42 tightly embraces the valve stem 31 to form a sliding sealed connection. The mating surfaces of the sealing components are pressed to form a pre-sealing force to achieve sealing. When the water on the high-pressure side can directly squeeze the elastomer 43 downward, the elastomer 43 is further compressed and deformed to make the sealing surfaces fit more closely, the sealing force is greater, and the sealing effect is more obvious.

[0045] As an optional embodiment, the valve core 3 includes a coaxially connected valve stem 31 and a valve column 32; the valve column 32 is assembled in the chamber 21, and the valve column 32 is slidably connected to the cavity wall of the chamber 21 and the sealing ring 4; the valve stem 31 is located on the side of the valve column 32 opposite to the water flow channel 11; wherein, along the axial direction of the valve sleeve 2, a water containing space 5 and a balancing space (6) are respectively arranged on opposite sides of the valve column 32, and a plurality of sealing rings 4 are arranged between the water containing space 5 and the balancing space 6.

[0046] Based on the foregoing embodiments, in this embodiment, the valve column 32 is a cylindrical structure, and the valve stem 31 is a long rod structure. The valve column 32 and the valve stem 31 are coaxially connected. The valve stem 31 is located above the valve column 32. A balancing space 6 is provided on the upper side of the valve column 32, and the balancing space 6 is a part of the chamber 21. A water containing space 5 is provided on the lower side of the valve column 32, and the water containing space 5 is formed on the valve column 32. Water is contained in both the balancing space 6 and the water containing space 5 to ensure that the pressure on the upper and lower parts of the valve column 32 is balanced. In this embodiment, two sealing rings 4 are provided, and the two sealing rings 4 are coaxially arranged relatively far apart, one of which is close to the balancing space 6, and the other is close to the water containing space 5, so as to achieve a better sealing effect.

[0047] like Figure 1-3 As shown, Figure 2 is a longitudinal cross-sectional view of the first sealing ring 4A, Figure 3 It is a longitudinal cross-sectional view of the second sealing ring 4B. Figure 2 and Figure 3 The first conical surface 45 and the second conical surface 46 in the embodiment are closely fitted together. Figure 2 and Figure 3 The first conical surface 45 and the second conical surface 46 are labeled together.

[0048] As an optional embodiment, the sealing ring 4 includes a first sealing ring 4A and a second sealing ring 4B which are relatively far apart from each other; the support ring 41 of the first sealing ring 4A and the support ring 41 of the second sealing ring 4B are arranged close to each other in the axial direction of the valve sleeve 2; the sliding ring 42 of the first sealing ring 4A and the sliding ring 42 of the second sealing ring 4B are arranged far apart from each other in the axial direction of the valve sleeve 2.

[0049] Based on the above embodiments, in this embodiment, the first sealing ring 4A is arranged on the top and the second sealing ring 4B is arranged on the bottom. The support ring 41 of the first sealing ring 4A is arranged on the bottom and the sliding ring 42 is arranged on the top. The first conical surface 45 and the second conical surface 46 of the first sealing ring 4A are both high inside and low outside. The upper side of the first sealing ring 4A is the high-pressure side and the lower side is the low-pressure side. Such an arrangement can ensure the sealing effect of the first sealing ring 4A.

[0050] The support ring 41 of the second sealing ring 4B is on the top, and the sliding ring 42 is arranged at the bottom. The first conical surface 45 and the second conical surface 46 of the second sealing ring 4B are both low inside and high outside. The lower side of the second sealing ring 4B is the high-pressure side, and the upper side is the low-pressure side. Such an arrangement can ensure the sealing effect of the second sealing ring 4B.

[0051] like Figure 1 As shown, as an optional embodiment, the valve column 32 has a plurality of connecting channels 33 connecting the water containing space 5 and the balancing space 6. The plurality of connecting channels 33 are arranged around the axis of the valve column 32. The connecting channels 33 are a linear structure, and the plurality of connecting channels 33 are inclined toward the axis of the valve column 32.

[0052] The above technical solution can ensure the amount of flowing water, make the connecting channels 33 denser, increase the number of connecting channels 33, improve space utilization, and is more suitable for valve columns 32 of small volume.

[0053] like Figure 1 As shown, as an optional embodiment, the valve sleeve 2 includes a first set of structures 23 and a second set of structures 24 connected to each other, a buffer cavity 25 is formed between the first set of structures 23 and the second set of structures 24, and the buffer cavity 25 has a drain hole 26 connected to the outside.

[0054] Based on the above embodiments, in this embodiment, the first set of structures 23 is at the bottom, and the second set of structures 24 is at the top. A cover is provided on the top of the first set of structures 23, and the cover is provided with a first through hole for the valve stem 31 to pass through. A base is provided at the bottom of the second set of structures 24, and the base is provided with a second through hole for the valve stem 31 to pass through. The second through hole is coaxial with the first through hole to enable the valve stem 31 to pass through.

[0055] The first set of structures 23 and the second set of structures 24 are sealed and connected, and a buffer cavity 25 is formed between the cover body and the base body. The buffer cavity 25 is located above the valve column. If the seal above the balancing space 6 is effective and leaks, water will flow into the buffer cavity 25 and flow out through the water leakage hole 26. In this way, the staff can judge whether the balancing space 6 is leaking by the water leakage through the water leakage hole 26.

[0056] like Figure 1 As shown, as an optional embodiment, the slide valve type water curtain valve assembly structure also includes a piston 7, which is sleeved outside the valve stem 31 and moves synchronously with the valve stem 31. The first set of structures 23 forms a chamber 21; the second set of structures 24 forms a piston cavity 27, the valve stem 31 passes through the piston cavity 27, and the piston 7 is arranged in the piston cavity 27.

[0057] Based on the foregoing embodiments, in this embodiment, a piston 7 cavity is formed in the second set structure 24, the piston 7 is a disc-shaped structure, and a through hole is provided in the middle of the piston 7. The piston 7 is sleeved on the outside of the valve stem 31 and forms a fixed connection, for example, by using a locking nut to achieve the same upward and downward movement of the two.

[0058] As an optional implementation, the elastic body 43 is an O-type elastic ring.

[0059] Based on the foregoing embodiments, in this embodiment, the radial cross-section of the elastic body 43 is circular or elliptical to ensure that the elastic body 43 has elasticity in the radial direction to achieve a sealed connection.

[0060] As an optional implementation, the material of the support ring 41 includes polytetrafluoroethylene.

[0061] Based on the above embodiments, in this embodiment, the support ring 41 is made of a polytetrafluoroethylene composite material. The polytetrafluoroethylene composite material has high strength and plasticity, and can better protect the elastomer 43 embedded in the support ring 41.

[0062] In the description of the present application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0063] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0064] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0065] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0066] The above is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A sliding valve type water curtain valve assembly structure, characterized in that: include: A valve body (1) having a water flow channel (11); A valve sleeve (2) extending into the valve body (1), wherein the valve sleeve (2) has a chamber (21) in communication with the water flow channel (11); A valve core (3), part of which is assembled in the chamber (21), and the valve core (3) moves away from or towards the water flow channel (11) along the axial direction of the valve sleeve (2) to control the opening or closing of the water flow channel (11); A sealing ring (4), embedded in the wall of the chamber (21) and used for sealingly connecting with the valve core (3); The sealing ring (4) comprises a support ring (41), a sliding ring (42) and an elastomer (43); the support ring (41) and the sliding ring (42) are arranged along the axial direction of the valve sleeve (2) and are supported and connected, and the elastomer (43) is filled between the sliding ring (42) and the inner wall of the chamber (21).

2. The slide valve type water curtain valve assembly structure according to claim 1 is characterized in that: A first conical surface (45) is provided on a side of the support ring (41) facing the slip ring (42); A second conical surface (46) is provided on a side of the slip ring (42) facing the support ring (41); The first conical surface (45) and the second conical surface (46) are tightly fitted.

3. The slide valve type water curtain valve assembly structure according to claim 1 is characterized in that: The cavity wall of the cavity (21) has an annular groove (22) arranged in the circumferential direction, and the sealing ring (4) is embedded in the annular groove (22); The slip ring (42) has a mounting groove (44) arranged along the circumferential direction, the mounting groove (44) opens toward the groove bottom of the annular groove (22), and the elastic body (43) is embedded in the mounting groove (44).

4. The slide valve type water curtain valve assembly structure according to claim 1 is characterized in that: The valve core (3) comprises a valve stem (31) and a valve column (32) which are coaxially connected; The valve column (32) is assembled in the chamber (21), and the valve column (32) is slidably connected to the wall of the chamber (21) and the sealing ring (4); the valve stem (31) is located on a side of the valve column (32) opposite to the water flow channel (11); Wherein, along the axial direction of the valve sleeve (2), a water containing space (5) and a balance space (6) are respectively arranged on two opposite sides of the valve column (32), and a plurality of sealing rings (4) are arranged between the water containing space (5) and the balance space (6).

5. The slide valve type water curtain valve assembly structure according to claim 4 is characterized in that: The sealing ring (4) comprises a first sealing ring (4A) and a second sealing ring (4B) which are arranged relatively far apart; The support ring (41) of the first sealing ring (4A) and the support ring (41) of the second sealing ring (4B) are arranged close to each other in the axial direction of the valve sleeve (2); The sliding ring (42) of the first sealing ring (4A) and the sliding ring (42) of the second sealing ring (4B) are arranged to be spaced apart from each other in the axial direction of the valve sleeve (2).

6. The slide valve type water curtain valve assembly structure according to claim 4 is characterized in that: The valve column (32) has a plurality of communication channels (33) connecting the water containing space (5) and the balance space (6); the plurality of communication channels (33) are arranged around the axis of the valve column (32); the communication channels (33) are of a linear structure; and the plurality of communication channels (33) are all inclined toward the axis of the valve column (32).

7. The slide valve type water curtain valve assembly structure according to claim 6 is characterized in that: The valve sleeve (2) comprises a first set of structures (23) and a second set of structures (24) which are connected to each other, a buffer chamber (25) is formed between the first set of structures (23) and the second set of structures (24), and the buffer chamber (25) has a drain hole (26) which is connected to the outside.

8. The slide valve type water curtain valve assembly structure according to claim 7 is characterized in that: Also includes: A piston (7) is sleeved on the outside of the valve stem (31) and moves synchronously with the valve stem (31); The chamber (21) is formed in the first set structure (23); a piston chamber (27) is formed in the second set structure (24); the valve stem (31) passes through the piston chamber (27); and the piston (7) is arranged in the piston chamber (27).

9. The slide valve type water curtain valve assembly structure according to claim 1 is characterized in that: The elastic body (43) is an O-type elastic ring.

10. The slide valve type water curtain valve assembly structure according to any one of claims 1 to 9, characterized in that: The material of the support ring (41) includes polytetrafluoroethylene.

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