Combined constant flow valve

Abstract

The utility model relates to the technical field of constant flow valves, in particular to a combined type constant flow valve which comprises a valve body arranged in a matched mode, a water inlet end and a water outlet end, the water inlet end and the water outlet end are arranged at the two ends of the valve body, a valve rod seat is fixedly connected to the top of the valve body, a combined structure is connected to the top of the valve rod seat in a matched mode, and a valve rod assembly is connected to the top of the combined structure in a matched mode. And the interior of the valve body is fixedly connected with an inner limiting structure. The effect of conveniently limiting and fixing the whole inner limiting structure in the valve body is achieved through a first mounting wing plate and a second mounting wing plate, the effect of ensuring the rotation adjusting stability of an external movable piece and an external movable piece is achieved through a limiting frame matched with a limiting open groove in the surface, and the effect of conveniently guiding flow is achieved through a flow guiding opening in the surface. And the effect of limiting the valve rod embedded into the valve body is achieved through the connecting frame, and the rotation adjusting stability of the valve rod is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of constant flow valves, and particularly relates to a combined constant flow valve. Background Art

[0002] A constant flow valve generally consists of a flow constant mechanism and a flow regulating mechanism, and is a regulating valve with a constant flow function. It is a valve formed by combining a self-acting differential pressure control device and a flow regulating device. The existing constant flow valve body is composed of a valve body, a valve rod assembly, a shunt structure, etc. When in use, liquid enters the valve body from the water inlet end, passes through two holes of the shunt structure and enters the ceramic valve hole, and then flows out from the water outlet end. The valve rod assembly can drive the ceramic moving part to rotate during use, and coincide or stagger with the ceramic valve hole on the ceramic static piece, thereby changing the flow cross-sectional area of the ceramic valve hole to achieve the flow adjustment of the constant flow valve. The existing problems of the constant flow valve are as follows:

[0003] The valve body itself is integrally formed, and the valve rod is connected to the valve body by an insertion seal to drive the corresponding moving and static pieces. When it is necessary to disassemble and replace the structural components inside the valve body, it is not possible to perform disassembly and assembly operations on the moving and static pieces well. At the same time, this kind of integral constant flow valve cannot perform replacement operations on the sealing components and the valve rod assembly well.

[0004] Therefore, the utility model proposes a combined constant flow valve. Content of the Utility Model

[0005] Aiming at the defects in the prior art, a combined constant flow valve provided by the utility model can solve the problems that: the existing constant flow valve body is integrally formed, and the valve rod is connected to the valve body by an insertion seal to drive the corresponding moving and static pieces. When it is necessary to disassemble and replace the structural components inside the valve body, it is not possible to perform disassembly and assembly operations on the moving and static pieces well; at the same time, this kind of integral constant flow valve cannot perform replacement operations on the sealing components and the valve rod assembly well.

[0006] In order to solve the above technical problems, the utility model proposes the following technical solutions:

[0007] A combined constant flow valve includes a supporting valve body, a water inlet end and a water outlet end at both ends thereof. A valve rod seat is fixedly connected to the top of the valve body, a combined structure is connected to the top of the valve rod seat in a supporting manner, a valve rod assembly is connected to the top of the combined structure in a supporting manner, and an inner limiting structure is fixedly connected to the inside of the valve body.

[0008] Further, the inner limiting structure includes a limiting frame, a first mounting wing plate and a second mounting wing plate which are arranged in an arc shape at both ends thereof. A limiting slot and a diversion opening are fixedly formed on the surface of the limiting frame, and a connecting frame is fixedly connected to the surface of the limiting frame.

[0009] Furthermore, the limiting frame is integrally arranged as an inverted trapezoidal frame, the diversion opening and the limiting slot are respectively arranged on the inclined surface and the horizontal surface of the limiting frame, and the diversion opening and the limiting slot are respectively arranged in a rectangular shape and a circular shape.

[0010] Furthermore, both the first mounting wing plate and the second mounting wing plate are arranged in a semicircular shape, and the outer ends are simultaneously attached to the inner wall of the valve stem seat for connection.

[0011] Furthermore, the connecting frame is integrally arranged longitudinally, integrally arranged in an "L" shape, and the end of the connecting frame facing the first mounting wing plate is arranged in a semicircular concave shape.

[0012] Furthermore, the valve stem assembly includes a valve stem cylinder and a screw rod that are movably sleeved, and the combined structure includes an outer seal ring seat and a seal cylinder. The bottom of the outer seal ring seat is fixedly connected to an inner seal ring seat. At the same time, a first seal ring is sleeved on the inner seal ring seat, and a second seal ring is fixedly connected to the surface of the seal cylinder.

[0013] Furthermore, the side section of the valve stem seat is trapezoidally arranged, its top is annularly arranged, and threads are arranged on the outer surface of the top. At the same time, threads are arranged on the inner surface of the top of the valve stem seat.

[0014] Furthermore, the outer seal ring seat and the inner seal ring seat are integrally arranged, and threaded side plates are vertically provided at both ends of the outer seal ring seat. Threads are arranged on the inner surface of the threaded side plates and are threadedly connected to the outside of the valve stem seat. The first seal ring is sleeved at the connection position of the top of the inner seal ring seat and the outer seal ring seat. At the same time, the first seal ring is located at the top of the valve stem seat.

[0015] Furthermore, threads are arranged on the outer surface of the inner seal ring seat and are threadedly connected to the inner thread at the top of the valve stem seat.

[0016] Furthermore, the bottom end of the seal cylinder is threadedly connected to the outer seal ring seat, and the second seal ring is arranged to fit the top edge of the seal cylinder and is located between the seal cylinder and the valve stem cylinder at the same time.

[0017] From the above technical solutions, the beneficial effects of the present utility model are as follows:

[0018] 1. Through the first mounting wing plate and the second mounting wing plate, the effect of facilitating the limiting and fixing of the entire inner limiting structure inside the valve body is achieved. Through the limiting frame and the limiting slot on the surface, the effect of ensuring the rotation and adjustment stability of the external moving and static pieces is achieved. And through the diversion opening on its surface, the effect of facilitating diversion is achieved.

[0019] 2. Through the connecting frame, the effect of limiting the valve stem embedded inside the valve body is achieved, which is beneficial to ensuring the rotation and adjustment stability of the valve stem.

[0020] 3. The effect of ensuring the threaded connection between the valve stem seat is achieved through the outer seal ring seat, the effect of ensuring the connection tightness between the outer seal ring seat and the valve stem seat is achieved through the first seal ring, and the effect of ensuring the threaded connection seal between the outer seal ring seat and the valve stem seat is achieved through the inner seal ring seat.

[0021] 4. The effect of ensuring the combined tightness between the valve stem assembly and the combined structure is achieved through the cooperation of the seal cylinder and the second seal ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally denoted by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0023] Figure 1 is the front view of the overall structure of the present invention;

[0024] Figure 2 is the exploded view of the connection between the combined structure and the inner limit structure in the present invention;

[0025] Figure 3 is the exploded view of the connection of the inner limit structure in the present invention.

[0026] Reference Numerals:

[0027] 1, valve body; 2, water inlet end; 3, water outlet end; 4, valve stem seat; 5, combined structure; 6, valve stem assembly; 7, inner limit structure; 8, limit frame; 9, first mounting wing plate; 10, second mounting wing plate; 11, connecting frame; 12, diversion opening; 13, limit slot; 14, first seal ring; 15, outer seal ring seat; 16, inner seal ring seat; 17, seal cylinder; 18, second seal ring; 19, valve stem; 20, valve stem cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will describe in detail the embodiments of the technical solutions of the present invention in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0029] Refer to Figures 1-3As shown in the figure, a combined constant current valve includes a supporting valve body 1, a water inlet end 2 and a water outlet end 3 at both ends thereof. A valve rod seat 4 is fixedly connected to the top of the valve body 1. A combined structure 5 is connected to the top of the valve rod seat 4 in a matching manner. A valve rod assembly 6 is connected to the top of the combined structure 5 in a matching manner. An inner limiting structure 7 is fixedly connected to the inside of the valve body 1. After the valve rod 19 in the valve rod assembly 6 is connected to the external moving and static pieces, it sequentially passes through the sealing cylinder 17 and the outer sealing ring seat 15 in the combined structure 5 and is embedded in the limiting slot 13. First, the valve rod assembly 6 and the sealing cylinder 17 are threadedly connected, then the sealing cylinder 17 and the outer sealing ring seat 15 are threadedly connected. After that, the outer sealing ring seat 15 and the inner sealing ring seat 16 are respectively threadedly connected to the outside and inside of the valve rod seat 4. The first sealing ring 14 ensures the sealing performance of the threaded connection at this place. After the connection is completed, the external moving and static pieces are embedded in the limiting slot 13, and the valve rod 19 is located at the inner limiting structure 7.

[0030] In the embodiment of the present utility model, the inner limiting structure 7 includes a limiting frame 8, a first mounting wing plate 9 and a second mounting wing plate 10 which are arranged in an arc shape at both ends thereof. A limiting slot 13 and a diversion opening 12 are fixedly formed on the surface of the limiting frame 8. A connecting frame 11 is fixedly connected to the surface of the limiting frame 8. The limiting frame 8 is integrally arranged as an inverted trapezoidal frame. The diversion opening 12 and the limiting slot 13 are respectively formed on the inclined surface and the horizontal surface of the limiting frame 8. The diversion opening 12 and the limiting slot 13 are respectively formed in a rectangular shape and a circular shape. Both the first mounting wing plate 9 and the second mounting wing plate 10 are arranged in a semicircular shape, and the outer ends are simultaneously attached to the inner wall of the valve rod seat 4 for connection. The first mounting wing plate 9 and the second mounting wing plate 10 are used to facilitate the limiting and fixing of the entire inner limiting structure 7 inside the valve body 1. The limiting frame 8 is matched with the limiting slot 13 on the surface to ensure the stability of the rotation adjustment of the external moving and static pieces. And through the diversion opening 12 on its surface, the effect of facilitating diversion is achieved.

[0031] The connecting frame 11 is integrally arranged longitudinally and is in an "L" shape as a whole. And the end of the connecting frame 11 facing the first mounting wing plate 9 is arranged in a semicircular concave shape. The connecting frame 11 is used to limit the valve rod 19 embedded inside the valve body 1, which is beneficial to ensuring the stability of the rotation adjustment of the valve rod 19.

[0032] When installing the moving and static pieces, first, the valve rod 19 and the moving and static pieces are installed. Then the entire valve rod assembly 6 is embedded inside the valve body 1, and the external moving and static pieces are simultaneously embedded in the limiting slot 13, thereby ensuring the stability during the subsequent adjustment and rotation of the moving and static pieces. When the valve rod 19 is embedded inside the valve body 1, the outer side passes through the semicircular concave position at the outer end of the connecting frame 11 to limit it, ensuring the stability of the rotation adjustment of the valve rod 19.

[0033] The valve stem assembly 6 includes a valve stem cylinder 20 and a screw 19 that are movably sleeved. The combined structure 5 includes an outer seal ring seat 15 and a seal cylinder 17. The bottom of the outer seal ring seat 15 is fixedly connected to an inner seal ring seat 16. At the same time, a first seal ring 14 is sleeved on the inner seal ring seat 16. The surface of the seal cylinder 17 is fixedly connected to a second seal ring 18. The side section of the valve stem seat 4 is trapezoidally arranged, its top is annularly arranged, and a thread is provided on the outer surface of the top. At the same time, a thread is provided on the inner surface of the top of the valve stem seat 4. The outer seal ring seat 15 and the inner seal ring seat 16 are integrally arranged, and threaded side plates are vertically provided at both ends of the outer seal ring seat 15. Threads are provided on the inner surface of the threaded side plates and are threadedly connected to the outside of the valve stem seat 4. The first seal ring 14 is sleeved at the connection position between the top of the inner seal ring seat 16 and the outer seal ring seat 15. At the same time, the first seal ring 14 is located at the top of the valve stem seat 4. Threads are provided on the outer surface of the inner seal ring seat 16 and are threadedly connected to the inner thread at the top of the valve stem seat 4. The outer seal ring seat 15 is used to ensure the threaded connection with the valve stem seat 4. The first seal ring 14 is used to ensure the sealing performance of the connection between the outer seal ring seat 15 and the valve stem seat 4. The inner seal ring seat 16 is used to ensure the sealing of the threaded connection between the outer seal ring seat 15 and the valve stem seat 4.

[0034] The bottom end of the seal cylinder 17 is threadedly connected to the outer seal ring seat 15. The second seal ring 18 is arranged to fit the top edge of the seal cylinder 17 and is located between the seal cylinder 17 and the valve stem cylinder 20. The seal cylinder 17 and the second seal ring 18 are used to ensure the combined sealing performance between the valve stem assembly 6 and the combined structure 5.

[0035] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A combined constant flow valve, characterized in that: The valve body (1) comprises a valve body (1) and a water inlet end (2) and a water outlet end (3) at two ends thereof; the top of the valve body (1) is fixedly connected to a valve stem seat (4); the top of the valve stem seat (4) is matched with a combination structure (5); the top of the combination structure (5) is matched with a valve stem assembly (6); and the interior of the valve body (1) is fixedly connected to an internal limit structure (7); The inner limit structure (7) comprises a limit frame (8) and a first mounting wing plate (9) and a second mounting wing plate (10) arranged in an arc shape at both ends thereof; a limit slot (13) and a flow guide opening (12) are fixedly provided on the surface of the limit frame (8); and a connecting frame (11) is fixedly connected to the surface of the limit frame (8); The valve stem assembly (6) includes a movably sleeved valve stem tube (20) and a screw rod (19), and the combined structure (5) includes an outer sealing ring seat (15) and a sealing tube (17), the bottom of the outer sealing ring seat (15) is fixedly connected to an inner sealing ring seat (16), and a first sealing ring (14) is sleeved on the inner sealing ring seat (16), and a second sealing ring (18) is fixedly connected to the surface of the sealing tube (17).

2. A combined constant flow valve according to claim 1, characterized in that: The limiting frame (8) is configured as an inverted ladder frame as a whole, and the guide opening (12) and the limiting slot (13) are respectively opened on the inclined surface and the horizontal surface of the limiting frame (8), and the guide opening (12) and the limiting slot (13) are respectively opened in a rectangular shape and a circular shape.

3. A combined constant flow valve according to claim 1, characterized in that: The first mounting wing plate (9) and the second mounting wing plate (10) are both arranged in a semicircular shape, and the outer ends are simultaneously connected to the inner wall of the valve stem seat (4).

4. A combined constant flow valve according to claim 1, characterized in that: The connecting frame (11) is arranged longitudinally as a whole and is arranged in an "L" shape as a whole, and one end of the connecting frame (11) facing the first mounting wing plate (9) is arranged in a semicircular concave shape.

5. A combined constant flow valve according to claim 1, characterized in that: The valve stem seat (4) is arranged in a trapezoidal side section, and its top is arranged in a ring shape, and the outer surface of the top is provided with a thread, and the inner surface of the top of the valve stem seat (4) is also provided with a thread.

6. A combined constant flow valve according to claim 1, characterized in that: The outer sealing ring seat (15) and the inner sealing ring seat (16) are integrally arranged, and threaded side plates are vertically arranged at both ends of the outer sealing ring seat (15), and the inner surface of the threaded side plates is provided with threads, which are connected to the outer threads of the valve stem seat (4). The first sealing ring (14) is sleeved on the top connection position of the inner sealing ring seat (16) and the outer sealing ring seat (15), and the first sealing ring (14) is located at the top position of the valve stem seat (4).

7. A combined constant flow valve according to claim 1, characterized in that: The outer surface of the inner sealing ring seat (16) is provided with threads, and is threadedly connected to the inner surface of the top of the valve stem seat (4).

8. A combined constant flow valve according to claim 1, characterized in that: The bottom end of the sealing cylinder (17) is threadedly connected to the outer sealing ring seat (15), and the second sealing ring (18) is arranged in contact with the top edge of the sealing cylinder (17) and is located between the sealing cylinder (17) and the valve stem cylinder (20).

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