Dry type coupling valve with short overall length

Abstract

According to the dry type coupling valve with the short overall length, an outer guide sleeve, a relay guide sleeve, a guide rod and a valve plate are arranged in a valve body, a guide rod limiting spigot is formed in the lower end of the guide rod, a relay guide sleeve upper limiting spigot is formed in the outer side of the upper end of the relay guide sleeve, and a relay guide sleeve lower limiting spigot is formed in the outer side of the lower end of the relay guide sleeve; a relay guide sleeve middle limiting spigot is arranged on the inner side of the middle of the relay guide sleeve. The outer guide sleeve is fixedly connected with the valve body, the relay guide sleeve is arranged in the outer guide sleeve, the relay guide sleeve upper limiting spigot is arranged on the upper side of the outer guide sleeve, the relay guide sleeve lower limiting spigot is arranged on the lower side of the outer guide sleeve, the lower end of the guide rod is arranged in the relay guide sleeve, and the guide rod limiting spigot is arranged on the lower side of the relay guide sleeve middle limiting spigot. The relay guide sleeve can keep the enough matching length with the guide rod, the relay guide sleeve can move downwards when the guide rod moves downwards, so that the opening distance of the valve plate cannot be influenced, the limiting spigot on the relay guide sleeve can limit the moving-downwards distance of the relay guide sleeve, the lower end of the relay guide sleeve is prevented from stretching out too long, and the relay guide sleeve is prevented from being damaged. And interference of valves connected in series is avoided.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a valve, in particular to a dry-type coupling valve with a shorter overall length. Background Art

[0002] Dry-coupled valve is a specially designed valve characterized by the use of dry coupling technology, that is, the valve components are coupled or connected through a non-liquid medium (such as air or other gas).

[0003] In the prior art, in certain special industries, coupling valves need to be used in series with other valves. When space is limited, the overall length of the dry-coupled valve needs to be shortened.

[0004] However, after the overall length is shortened, the guide rod for moving the valve plate extends out of the dry-coupled valve and interferes with the valve in series when the dry-coupled valve is opened.

[0005] If the length of the valve plate guide rod is shortened further, the dry-coupled valve will be closed, and the matching length between the guide rod and the guide sleeve will be very short, resulting in reduced rigidity and stability.

[0006] If the guide sleeve length is increased while the guide rod length is shortened, the above problems can be avoided, but the opening distance of the valve plate will be affected, resulting in an inability to adapt to other standard products. Summary of the Invention

[0007] The purpose of the present utility model is to provide a dry-coupled valve with a shorter overall length, and the dry-coupled valve with a shorter overall length is intended to solve the technical problem in the prior art that it is difficult to shorten the overall length of the dry-coupled valve.

[0008] The utility model provides a dry-coupled valve with a shorter overall length, comprising a valve body, an outer guide sleeve, a relay guide sleeve, a guide rod and a valve plate coaxially arranged in the valve body, the lower end of the guide rod is provided with a guide rod limit stop, the outer side of the upper end of the relay guide sleeve is provided with a relay guide sleeve upper limit stop, the outer side of the lower end of the relay guide sleeve is provided with a relay guide sleeve lower limit stop, and the inner side of the middle part of the relay guide sleeve is provided with a relay guide sleeve middle limit stop; the outer guide sleeve is fixedly connected to the valve body, the relay guide sleeve is arranged in the outer guide sleeve, the relay guide sleeve upper limit stop is arranged on the upper side of the outer guide sleeve, the relay guide sleeve lower limit stop is arranged on the lower side of the outer guide sleeve, the lower end of the guide rod is arranged in the relay guide sleeve, the guide rod limit stop is arranged on the lower side of the relay guide sleeve middle limit stop, and the upper end of the guide rod is connected to the valve plate.

[0009] Furthermore, the upper limit stop of the relay guide sleeve is a clamping ring.

[0010] Compared with the prior art, the present invention has a positive and significant effect. The relay guide sleeve of the present invention can maintain a sufficient length of fit with the guide rod, ensuring stability and return performance during the movement of the valve plate and ensuring sealing performance. Moreover, when the guide rod moves downward, the relay guide sleeve also moves downward, thereby not affecting the opening distance of the valve plate. In addition, the upper limit stop of the relay guide sleeve can limit the downward movement distance of the relay guide sleeve, thereby preventing the lower end of the relay guide sleeve from extending too far and avoiding interference with the valve in series with it, thereby shortening the overall length of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of a closed state of a dry-coupled valve with a relatively short overall length according to the present invention.

[0012] Figure 2 This is a schematic diagram of an open state of a dry-coupled valve with a shorter overall length according to the present invention. DETAILED DESCRIPTION

[0013] The following is a further description of the present invention in conjunction with an embodiment. However, the present invention is not limited to the embodiment. All similar variations of the present invention should be included in the scope of protection of the present invention. The use of directions such as up, down, front, back, left, right, center, inside, and outside in the present invention is only for the convenience of description and does not limit the technical solution of the present invention.

[0014] like Figure 1-Figure 2 As shown, a dry-coupled valve with a shorter overall length of the present invention comprises a valve body 1, wherein the valve body 1 is coaxially provided with an outer guide sleeve 2, a relay guide sleeve 3, a guide rod 4 and a valve plate 5, the lower end of the guide rod 4 is provided with a guide rod limit stop 6, the upper end outer side of the relay guide sleeve 3 is provided with a relay guide sleeve upper limit stop 7, the lower end outer side of the relay guide sleeve 3 is provided with a relay guide sleeve lower limit stop 8, the middle inner side of the relay guide sleeve 3 is provided with a guide rod limit stop 6, and the middle inner side of the relay guide sleeve 3 is provided with a guide rod limit stop 6. A middle limit stop 9 is provided in the relay guide sleeve; the outer guide sleeve 2 is fixedly connected to the valve body 1, the relay guide sleeve 3 is arranged in the outer guide sleeve 2, the upper limit stop 7 of the relay guide sleeve is arranged on the upper side of the outer guide sleeve 2, the lower limit stop 8 of the relay guide sleeve is arranged on the lower side of the outer guide sleeve 2, the lower end of the guide rod 4 is arranged in the relay guide sleeve 3, the guide rod limit stop 6 is arranged on the lower side of the middle limit stop 9 of the relay guide sleeve, and the upper end of the guide rod 4 is connected to the valve plate 5.

[0015] Furthermore, the upper limit stop 7 of the relay guide sleeve is a clamping ring.

[0016] Specifically, the valve body 1, the outer guide sleeve 2, the guide rod 4, the valve plate 5, etc. in this embodiment all adopt well-known solutions in the prior art, which are well understood by those skilled in the art and will not be described in detail here.

[0017] The working principle of this embodiment is as follows:

[0018] During the downward movement of the guide rod 4 and valve plate 5, the guide rod limit stop 6 releases the limit on the middle limit stop 9 of the relay guide sleeve. The guide rod 4 moves the relay guide sleeve 3 downward through friction, gravity, or the push of the valve plate 5. The guide rod 4 stops moving after the upper limit stop 7 of the relay guide sleeve aligns with the upper end of the outer guide sleeve 2. Then, during the upward movement of the guide rod 4 and valve plate 5, the guide rod limit stop 6 pushes the relay guide sleeve 3 upward through the middle limit stop 9 of the relay guide sleeve until the lower limit stop 8 of the relay guide sleeve aligns with the lower end surface of the outer guide sleeve 2 and the guide sleeve stops moving.

[0019] The relay guide sleeve 3 of the present invention can maintain a sufficient matching length with the guide rod 4, ensure the stability and return performance of the valve plate 5 during movement, ensure the sealing performance, and when the guide rod 4 moves downward, the relay guide sleeve 3 will also move downward, thereby not affecting the opening distance of the valve plate 5, and the upper limit stop 7 of the relay guide sleeve can limit the downward movement distance of the relay guide sleeve 3, thereby preventing the lower end of the relay guide sleeve 3 from extending too long, avoiding interference with the valve in series with it, and thus shortening the overall length of the valve.

Claims

1. A dry-coupled valve with a shorter overall length, characterized in that: The cam is provided with a plurality of stoppers, each of which is adapted to move the valve body in a direction of rotation and to move the valve body in a direction of rotation. The cam is provided with a plurality of stoppers, each of which is adapted to move the valve body in a direction of rotation and to move the valve body in a direction of rotation. The cam is provided with a plurality of stoppers, each of which is adapted to move the valve body in a direction of rotation and to move the valve body in a direction of rotation.

2. A dry-coupled valve with a shorter overall length according to claim 1, characterized in that: The upper limit stop of the relay guide sleeve is a clamping ring.

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