A removable sleeve regulating valve

Abstract

The utility model relates to a detachable sleeve adjusting valve belongs to adjusting valve technical field, including valve seat, intercepts sleeve, valve core and valve rod, intercepts sleeve setting in the valve seat inner chamber, valve core sets up in the inner chamber of intercepts sleeve, valve core includes sealing cylinder and support assembly, and the outside wall of support assembly is provided with outer thread, and the inner wall of sealing cylinder is provided with inner thread, and sealing cylinder and support assembly are screwed, and the upper end surface of support assembly is provided with the threaded hole, and the valve rod is screwed in the threaded hole, and the outside wall of sealing cylinder is processed with the tapered sealing surface, and the valve core adopts split type design, and the abrasion mainly occurs on the tapered sealing surface of sealing cylinder, when sealing cylinder abrasion leads to sealing performance to drop, only needs to replace sealing cylinder, need not to replace valve core integrally, and support assembly can continue using, avoids the waste of material.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve technology, and in particular to a detachable sleeve regulating valve. Background Technology

[0002] Sleeve control valves are valves used to regulate process parameters such as flow rate, pressure, temperature, and liquid level of fluids in pipelines. They are widely used due to their good stability and simple maintenance.

[0003] Existing sleeve control valves such as Figure 1 As shown, the valve includes a valve seat 1, a retaining sleeve 2, a valve core 3, and a valve stem 4. The retaining sleeve 2 is disposed within the inner cavity of the valve seat 1, and the valve core 3 is disposed within the inner cavity of the retaining sleeve 2. The valve stem 4 is connected to the valve core 3. A flow hole 5 is provided on the side wall of the retaining sleeve 2, and a balance hole 6 is provided on the top of the retaining sleeve 2. During operation, the working medium flows into the retaining sleeve 2 from the lower part of the valve seat 1. The drive mechanism drives the valve stem 4 to move, which in turn drives the valve core 3 to move up and down, thereby changing the flow area of ​​the retaining sleeve 2 and adjusting the pressure, flow rate, and other process parameters of the medium. When closed, the conical sealing surfaces of the valve core 3 and the retaining sleeve 2 come into contact, cutting off the flow of the medium. When closed, when the medium enters the valve cavity, some fluid passes through the balance hole 6 at the top of the retaining sleeve 2 and enters the upper cavity of the retaining sleeve 2. The force generated balances the force generated by the medium at the lower part of the valve core 3, eliminating most of the static balance force on the valve disc.

[0004] Because the valve core 3 is in direct contact with the medium and experiences friction from long-term opening and closing, it wears relatively quickly, which affects the sealing performance between the valve core 3 and the retaining sleeve 2. However, since the valve core 3 is currently a single piece, it needs to be replaced entirely, resulting in material waste. To address the problems in the existing technology, we propose a detachable sleeve regulating valve. Utility Model Content

[0005] This utility model addresses the problems in the prior art by providing a detachable sleeve regulating valve, which is achieved through the following technical solution: A detachable sleeve regulating valve includes a valve seat, a retaining sleeve, a valve core, and a valve stem. The retaining sleeve is disposed in the inner cavity of the valve seat, and the valve core is disposed in the inner cavity of the retaining sleeve. The valve core includes a sealing cylinder and a support assembly. The outer side wall of the support assembly is provided with external threads, and the inner side wall of the sealing cylinder is provided with internal threads. The sealing cylinder is threadedly connected to the support assembly. A threaded hole is opened on the upper end face of the support assembly, and the valve stem is threadedly connected to the threaded hole. A conical sealing surface is machined on the outer side wall of the sealing cylinder.

[0006] The present invention is further configured such that: the support assembly includes a support rod, a first connecting ring, and a second connecting ring arranged coaxially; a connecting rod is fixedly connected to the inner sidewall of both the first and second connecting rings; the other end of the connecting rod is fixedly connected to the support rod; several sets of connecting rods are equally spaced along the circumference of the support rod; external threads are respectively provided on the outer sidewalls of the first and second connecting rings; the first connecting ring is located above the second connecting ring; and the threaded hole is located at the top of the support rod.

[0007] The present invention is further configured such that: the inner hole of the sealing cylinder is stepped, and the inner hole of the sealing cylinder is divided into a first inner hole, a second inner hole and a third inner hole from top to bottom. The diameter of the first inner hole is larger than the diameter of the second inner hole, and the diameter of the second inner hole is larger than the diameter of the third inner hole. The internal threads are respectively provided on the sidewalls of the first inner hole and the third inner hole. The first connecting ring is threadedly connected to the first inner hole, and the second connecting ring is threadedly connected to the third inner hole.

[0008] The present invention is further configured such that the upper end face of the connecting rod is arc-shaped.

[0009] In summary, the beneficial technical effects of this utility model are as follows: The valve core adopts a split design, and wear mainly occurs on the conical sealing surface of the sealing cylinder. When the sealing cylinder wears down and the sealing performance deteriorates, only the sealing cylinder needs to be replaced. There is no need to replace the entire valve core, and the support components can continue to be used, thus avoiding material waste. Attached Figure Description

[0010] Figure 1 It is a schematic diagram used to illustrate existing technology; Figure 2 This is a schematic diagram used to illustrate the overall structure of this embodiment; Figure 3 yes Figure 2 A magnified view of part A in the middle; Figure 4 This is an enlarged schematic diagram used to show the sealing cylinder and support components.

[0011] Reference numerals: 1. Valve seat; 2. Retention sleeve; 3. Valve core; 31. Sealing cylinder; 311. First inner hole; 312. Second inner hole; 313. Third inner hole; 32. Support assembly; 33. Threaded hole; 321. Support rod; 322. First connecting ring; 323. Second connecting ring; 324. Connecting rod; 4. Valve stem; 5. Fluid flow hole; 6. Balance hole. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to the accompanying drawings.

[0013] like Figure 2-4 As shown, this utility model discloses a detachable sleeve regulating valve, including a valve seat 1, a retaining sleeve 2, a valve core 3, and a valve stem 4. The retaining sleeve 2 is disposed in the inner cavity of the valve seat 1, and the valve core 3 is disposed in the inner cavity of the retaining sleeve 2. The valve core 3 includes a sealing cylinder 31 and a support assembly 32. The outer side wall of the support assembly 32 is provided with external threads, and the inner side wall of the sealing cylinder 31 is provided with internal threads. The sealing cylinder 31 is threadedly connected to the support assembly 32. A threaded hole 33 is opened on the upper end face of the support assembly 32, and the valve stem 4 is threadedly connected to the threaded hole 33. A conical sealing surface is machined on the outer side wall of the sealing cylinder 31. The valve core 3 adopts a split design, and wear mainly occurs on the conical sealing surface of the sealing cylinder 31. When the sealing cylinder 31 wears down and the sealing performance deteriorates, only the sealing cylinder 31 needs to be replaced, without replacing the entire valve core 3. The support assembly 32 can continue to be used, avoiding material waste.

[0014] The support assembly 32 includes a coaxially arranged support rod 321, a first connecting ring 322, and a second connecting ring 323. Connecting rods 324 are fixedly connected to the inner walls of both the first and second connecting rings 322 and 323. The other end of each connecting rod 324 (the end furthest from the first or second connecting ring 322) is fixedly connected to the support rod 321. Six sets of connecting rods 324 are evenly spaced along the circumference of the support rod 321. External threads are respectively provided on the outer walls of the first and second connecting rings 322 and 323, with the first connecting ring 322 positioned above the second connecting ring 323. Threaded holes 33 are located at the top of the support rod 321. The support assembly 32 connects and supports the upper and lower ends of the sealing cylinder 31 through the first and second connecting rings 322 and 323, preventing deformation of the sealing cylinder 31 under the pressure of the medium. Both the first connecting ring 322 and the second connecting ring 323 are connected to the support rod 321 via the connecting rod 324, thereby preventing impurities in the fluid from remaining between the first connecting ring 322 and the second connecting ring 323. The upper end face of the connecting rod 324 is arc-shaped, and the arc shape can also prevent impurities from remaining on the upper end face of the support rod 321.

[0015] The inner bore of the sealing cylinder 31 is stepped, consisting of a first inner bore 311, a second inner bore 312, and a third inner bore 313 from top to bottom. The diameter of the first inner bore 311 is larger than that of the second inner bore 312, and the diameter of the second inner bore 312 is larger than that of the third inner bore 313. Internal threads are respectively provided on the sidewalls of the first inner bore 311 and the third inner bore 313. The first connecting ring 322 is threaded into the first inner bore 311, and the second connecting ring 323 is threaded into the third inner bore 313. The stepped design of the inner bore of the sealing cylinder 31 facilitates connection with the first connecting ring 322 and the second connecting ring 323. Simultaneously, the steps at the first inner bore 311 and the second inner bore 312 can limit the movement of the first connecting ring 322.

Claims

1. A detachable sleeve regulating valve, comprising a valve seat (1), a retaining sleeve (2), a valve core (3), and a valve stem (4), wherein the retaining sleeve (2) is disposed in the inner cavity of the valve seat (1), and the valve core (3) is disposed in the inner cavity of the retaining sleeve (2), characterized in that, The valve core (3) includes a sealing cylinder (31) and a support assembly (32). The outer side wall of the support assembly (32) is provided with an external thread, and the inner side wall of the sealing cylinder (31) is provided with an internal thread. The sealing cylinder (31) is threadedly connected to the support assembly (32). The upper end face of the support assembly (32) is provided with a threaded hole (33). The valve stem (4) is threadedly connected to the threaded hole (33). A conical sealing surface is machined on the outer side wall of the sealing cylinder (31).

2. The detachable sleeve regulating valve according to claim 1, characterized in that, The support assembly (32) includes a support rod (321), a first connecting ring (322), and a second connecting ring (323) arranged coaxially. A connecting rod (324) is fixedly connected to the inner sidewall of the first connecting ring (322) and the second connecting ring (323). The other end of the connecting rod (324) is fixedly connected to the support rod (321). The connecting rod (324) is provided with several sets at equal intervals along the circumferential direction of the support rod (321). The external threads are respectively provided on the outer sidewalls of the first connecting ring (322) and the second connecting ring (323). The first connecting ring (322) is located above the second connecting ring (323). The threaded hole (33) is located at the top of the support rod (321).

3. A detachable sleeve regulating valve according to claim 2, characterized in that, The inner hole of the sealing cylinder (31) is stepped. The inner holes of the sealing cylinder (31) are, from top to bottom, a first inner hole (311), a second inner hole (312), and a third inner hole (313). The diameter of the first inner hole (311) is larger than the diameter of the second inner hole (312), and the diameter of the second inner hole (312) is larger than the diameter of the third inner hole (313). The internal threads are respectively provided on the side walls of the first inner hole (311) and the third inner hole (313). The first connecting ring (322) is threaded in the first inner hole (311), and the second connecting ring (323) is threaded in the third inner hole (313).

4. A detachable sleeve regulating valve according to claim 3, characterized in that, The upper end face of the connecting rod (324) is arc-shaped.

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