Easy-to-clean two-piece ball valve

Abstract

The utility model discloses an easily clean two -piece ball valve, including the valve body and the valve cover of being connected, the outside of valve body is installed with the blow -off port, and the inner chamber of blow -off port is communicated with the valve body, and the valve ball is arranged with valve seat through the valve body and the valve cover, and the top of valve ball is provided with valve rod, and valve rod is successively sleeved with valve rod seal, packing, packing gland, spring washer from below to top, and is locked through stop nut, and the upper portion of stop nut is sleeved with nut stop sheet. The utility model discloses simple structure, clever design, reasonable layout, and the residual medium in valve cavity can be removed quickly through blow -off port, avoid the abrasion of sealing surface caused by impurity accumulation, meet the CIP (in -situ cleaning) requirement of pharmaceutical, food industry, prevent cross -contamination effectively. Blow -off port can assist the temperature of valve cavity, reduce the stress crack risk of PTFE sealing material because of thermal expansion.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to an easy-to-clean two-piece ball valve. Background Technology

[0002] While traditional two-piece ball valves have a compact structure, impurities or particulate matter remaining in the pipeline can accumulate in the dead corners of the valve cavity, making them difficult to clean completely. Prolonged use can lead to accelerated wear on the valve seat or ball sealing surfaces. Before installation, the pipeline must be absolutely clean; otherwise, impurities may become trapped inside the valve body, affecting sealing performance. Maintenance requires complete disassembly of the valve for cleaning, making the process complex. Utility Model Content

[0003] To solve the above problems, this utility model provides an easy-to-clean two-piece ball valve.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: an easy-to-clean two-piece ball valve, including a valve body and a valve cover connected together. A purge port is installed on the outside of the valve body and communicates with the inner cavity of the valve body. A valve ball is set inside the valve body and the valve cover through a valve seat. A valve stem is set on the top of the valve ball. The valve stem is fitted with a valve stem seal, packing, packing gland and spring washer in sequence from bottom to top, and is locked by a stop nut. A nut stop plate is fitted on the top of the stop nut.

[0005] Furthermore, the valve body and valve cover are connected by bolts.

[0006] Furthermore, both the valve body and the valve cover have flange faces at both ends.

[0007] Furthermore, the stop nut is threadedly connected to the valve stem.

[0008] Furthermore, there are two valve seats, one located inside the valve body and the other inside the valve cover.

[0009] Furthermore, the purge port is welded to the outside of the valve body.

[0010] Furthermore, the purge port is connected to an external air source.

[0011] This utility model features a simple structure, ingenious design, and reasonable layout. The purge port allows for rapid removal of residual media from the valve cavity, preventing wear on the sealing surface caused by impurity accumulation. It meets the CIP (Cleaning in Place) requirements of the pharmaceutical and food industries and effectively prevents cross-contamination. The purge port can also assist in regulating the valve cavity temperature, reducing the risk of stress cracking in the PTFE sealing material due to thermal expansion. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0013] The components are: 1. Nut stop plate; 2. Stop nut; 3. Spring washer; 4. Packing gland; 5. Packing; 6. Valve stem seal; 7. Valve body; 8. Valve seat; 9. Valve ball; 10. Valve cover; 11. Bolt; 12. Purge port; 13. Valve stem. Detailed Implementation

[0014] The following is in conjunction with the appendix Figure 1 , 2 The technical solution of this utility model has been clearly and completely described. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] The easy-to-clean two-piece ball valve includes a valve body 7 and a valve cover 10 connected by bolts 11. The end faces of the valve body 7 and the valve cover 10 are flange faces. A purge port 12 is welded to the outside of the valve body 7. The purge port 12 communicates with the inner cavity of the valve body 7 and is connected to an external air source, forming a passage connection in the inner cavity of the fluid channel. A valve ball 9 is provided in the valve body 7 and the valve cover 10 through valve seats 8. There are two valve seats 8, which are respectively provided in the valve body 7 and the valve cover 10. A valve stem 13 is provided on the top of the valve ball 9. The valve stem 13 is fitted with a valve stem seal 6, packing 5, packing gland 4 and spring washer 3 from bottom to top, and is locked by a stop nut 2. The stop nut 2 is threaded to the valve stem 13. A nut stop plate 1 is fitted on the top of the stop nut 2 to prevent fluid leakage.

[0016] The two-piece ball valve controls the opening and closing of the pipeline by rotating the valve stem 13 by 90 degrees to drive the valve ball 9. When the valve pipeline is being purged, the valve remains in the open state. The purging medium (such as water or compressed air) is connected to the purging port 12 through the pipe joint to purge the valve body 7, valve cover 10, valve ball 9 and other valve components. The purging medium and impurities are discharged from the pipeline through the inner cavity of the valve ball 9, thus realizing online valve purging and pipeline purging.

[0017] The embodiments described above are merely preferred embodiments of this utility model, and not all feasible embodiments of this utility model. For those skilled in the art, any obvious modifications made without departing from the principles and spirit of this utility model should be considered to be included within the scope of protection of the claims of this utility model. Although this utility model has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of this utility model. In particular, as long as there is no technical conflict, the features in the embodiments disclosed in this utility model can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, this utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An easy-to-clean two-piece ball valve, characterized in that, The valve body and valve cover are connected together. A purge port is installed on the outside of the valve body and communicates with the inner cavity of the valve body. A valve ball is installed in the valve body and valve cover through a valve seat. A valve stem is installed on the top of the valve ball. The valve stem is fitted with a valve stem seal, packing, packing gland and spring washer in sequence from bottom to top, and is locked by a stop nut. A nut stop plate is installed on the top of the stop nut.

2. The easy-to-clean two-piece ball valve according to claim 1, characterized in that, The valve body and valve cover are connected by bolts.

3. The easy-to-clean two-piece ball valve according to claim 1, characterized in that, Both the valve body and the valve cover have flange faces at their ends.

4. The easy-to-clean two-piece ball valve according to claim 1, characterized in that, The stop nut is threadedly connected to the valve stem.

5. The easy-to-clean two-piece ball valve according to claim 1, characterized in that, There are two valve seats, which are respectively installed in the valve body and the valve cover.

6. The easy-to-clean two-piece ball valve according to claim 1, characterized in that, The purge port is welded to the outside of the valve body.

7. The easy-to-clean two-piece ball valve according to claim 1, characterized in that, The purge port is connected to an external air source.

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