Novel filter protection center line-type butterfly valve

Abstract

The utility model provides a novel filter protection center line-type butterfly valve which comprises a valve body, a valve shaft and a valve plate, the valve shaft and the valve plate are arranged in the valve body, filter pipes are respectively arranged on two sides of the valve body, a containing cavity is formed in each filter pipe, the containing cavity is communicated with the interior of the valve body, a filter screen and a filter screen gland are arranged in the containing cavity, the filter screen is arranged close to the valve shaft, and the filter screen gland is arranged close to the valve shaft. The filter screen gland is a circular pipe, a fluid channel is formed in the filter screen gland, and external threads are arranged on the outer wall; according to the novel filtering protection center line-type butterfly valve, inlet water and return water are filtered through the filtering pipe, the filtering net and the filtering net gland, and the influence of impurities in media on parts of the valve can be reduced; the problem that sealing of a valve plate and a valve seat is damaged due to the fact that various media are contained or pipelines are not cleaned thoroughly is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of middle line butterfly valve, especially a kind of new filter protection middle line butterfly valve. BACKGROUND

[0002] Middle line butterfly valve is a kind of component for realizing pipeline system on-off and flow control, is widely applied in petroleum, chemical industry, metallurgy, water and electricity and many other fields. The existing middle line butterfly valve is damaged when meeting a variety of media or pipeline cleaning is not clean, and the valve plate and valve seat sealing band are damaged in use process, even stuck and not closed tightly, seriously affect sealing. Forced to add filter device, increase cost. CONTENT OF UTILITY MODEL

[0003] Therefore, the utility model aims at providing a kind of new filter protection middle line butterfly valve to filter water and backwater, to solve the problem of valve plate and valve seat sealing damage caused by containing a variety of media or pipeline cleaning is not clean.

[0004] To achieve the above object, the technical scheme of the utility model is as follows:

[0005] A kind of new filter protection middle line butterfly valve, including valve body and the valve shaft and valve plate being arranged in valve body, the filter pipe is arranged at the both sides of valve body, and filter pipe interior constitutes a containing cavity, the containing cavity is communicated with the inside of valve body, filter screen and filter screen gland are arranged in the containing cavity, filter screen is close to valve shaft setting, filter screen gland is a circular tube, and its inside constitutes fluid passage, and its outer wall is provided with external thread;The inner thread is arranged on the inner wall of filter pipe, and filter screen gland is connected with filter pipe by the cooperation of external thread and the inner thread and constitutes detachable connection, and the front end of filter screen gland is abutted with filter screen.

[0006] Further, the filter pipe and valve body are integrally connected.

[0007] Further, the filter pipe outer end is equipped with flange plate, and the outer end of filter screen gland is flush with the outer end surface of flange plate.

[0008] Further, the filter screen gland is in the form of a whole cylinder, and the filter passage is in the form of a cylinder.

[0009] Further, the outer end of filter screen gland is provided with recess for disassembling filter screen gland.

[0010] Further, the filter pipe interior is provided with limiting groove before the inner thread, and the limiting groove is annular recess arranged on the inner wall of filter pipe, and filter screen is clamped in limiting groove and constitutes detachable connection.

[0011] Further, the filter screen and filter screen gland on the both sides of valve body are mirror-symmetrically arranged.

[0012] Compared with the prior art, the novel filtering protection center line butterfly valve has the following advantages:

[0013] The novel filtering protection center line butterfly valve has the following advantages: The filtering pipe, the filter screen and the filter screen gland are used for filtering the inlet water and the return water, so that the influence of impurities in the medium on the valve parts can be reduced; the sealing damage of the valve plate and the valve seat caused by the multiple media or the unclean pipeline cleaning can be solved; and the situation of being stuck and not tightly closed is prevented, and the sealing is seriously affected. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which form a part of the present application, are used to provide a further understanding of the present application, and the illustrative embodiments of the present application and its description are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0015] Figure 1 The novel filtering protection center line butterfly valve is shown in the overall structure diagram.

[0016] Figure 2 The novel filtering protection center line butterfly valve is shown in the overall structure diagram.

[0017] The accompanying drawings, which form a part of the present application, are used to provide a further understanding of the present application, and the illustrative embodiments of the present application and its description are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0018] 1- valve body; 2- valve plate; 3- valve shaft; 10- filter pipe; 11- flange plate; 12- filter screen gland; 13- filter screen; 14- groove; 15- limiting groove; 16- internal thread; 17- external thread. DETAILED DESCRIPTION

[0019] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0020] The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] As Figure 1 and Figure 2As shown, a new filter protection center line butterfly valve, including valve body 1 and valve shaft 3 and valve plate 2 arranged in valve body 1, the valve body 1 both sides are provided with filter tube 10, filter tube 10 inside constitutes a containing cavity, cover containing cavity with valve body 1 inside communication, the filter channel is provided with filter screen 13 and filter screen gland 12, filter screen 13 is close to the valve shaft setting, filter screen gland 12 is a circular tube, its inside constitutes fluid passage, its outer wall is provided with external thread 17;The inner thread 16 is arranged on the inner wall of the filter tube 10, the filter screen gland 12 is detachably connected by the cooperation of the external thread 17 and the inner thread 16, and the front end of the filter screen gland 12 abuts against the filter screen 13.

[0022] A new filter protection center line butterfly valve, valve body 1 both sides are provided with filter tube 10, can filter the water and backwater, so that the medium through the valve is in the best state after filtering, avoiding direct damage to the valve plate and the seal. Among them, the filter screen can achieve an ideal effect according to the user's use requirement of different mesh size. This embodiment can reduce the influence of impurities in the medium of valve parts, prolong the best state operation. Especially in the long-term use of pipeline equipment, it increases the safety factor of the whole equipment, and also prolongs the service life of the equipment.

[0023] The filter tube 10 and the valve body 1 are connected as an integral structure. The filter tube 10 and the valve body 1 constitute an integral structure, realize the effect of two-in-one, the overall structure is compact, the appearance is simple, and it is convenient to carry and install.

[0024] The outer end of the filter tube 10 is sleeved with the flange plate 11, and the outer end of the filter screen gland 12 is flush with the outer end surface of the flange plate 11. The overall structure is compact, and it is convenient to connect with the pipeline.

[0025] The filter screen gland 12 is in the shape of a cylinder, and the filter channel is in the shape of a cylinder. The cylindrical filter channel is more convenient for fluid to pass through.

[0026] The filter screen gland 12 is provided with a groove 14 for dismounting the filter screen gland 12 at the outer end. When dismounting the filter screen gland 12 later, a screwdriver can be used to rotate the filter screen gland 12 from the groove 14 to dismount it.

[0027] The filter tube 10 is provided with a limiting groove 15 before the inner thread 16 inside. The limiting groove 15 is an annular groove opened on the inner wall of the filter tube 10, and the filter screen 13 is clamped in the limiting groove to constitute a detachable connection. The limiting groove can play the role of positioning and limiting when clamping the filter screen 13, which is convenient for replacing the filter screen 13 later.

[0028] The filter screen 13 and the filter screen gland 12 on both sides of the valve body 1 are arranged in mirror image symmetry. The layout is reasonable, the structure is compact, the filter screen gland 12 is assembled from the outside of the valve body, and it is convenient to dismount and install.

[0029] The embodiment can filter the inlet water and the return water by setting the filter pipe and the filter screen and the filter screen gland on both sides of the valve body, can reduce the influence of impurities in the valve parts medium, prolong the best state operation. Especially in the long-term use of pipeline equipment, increase the safety factor of the whole equipment, also prolong the service life of the equipment, and constitute an integrated structure to realize the effect of two-in-one, wherein the filter screen and the filter screen gland are convenient to disassemble and install.

[0030] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A new type of filter protection center line butterfly valve, comprising a valve body (1) and a valve shaft (3) and a valve plate (2) arranged in the valve body (1), characterized in that: The filter pipe (10) is internally provided with a filter screen (13) and a filter screen gland (12), the filter screen (13) is arranged close to the valve shaft, the filter screen gland (12) is a circular pipe, the inside of which is provided with a fluid passage, and the outer wall of the filter screen gland (12) is provided with external threads (17); the inner wall of the filter pipe (10) is provided with internal threads (16), the filter screen gland (12) is detachably connected with the filter pipe (10) through cooperation of the external threads (17) and the internal threads (16), and the front end of the filter screen gland (12) abuts against the filter screen (13).

2. A new filter protection center line butterfly valve according to claim 1, characterized in that: The filter pipe (10) and the valve body (1) are integrally connected.

3. The new filter protection center line butterfly valve according to claim 1, characterized in that: The filter pipe (10) is externally provided with a flange plate (11), and the outer end of the filter screen gland (12) is flush with the outer end surface of the flange plate (11).

4. The new filter protection center line butterfly valve according to claim 1, characterized in that: The filter screen gland (12) is in a whole cylindrical shape, and the filter passage is also in a cylindrical shape.

5. The new filter protection center line butterfly valve according to claim 1, characterized in that: The outer end of the filter screen gland (12) is provided with a groove (14) for dismounting the filter screen gland (12).

6. The new filter protecting centerline butterfly valve of claim 1, wherein: The inside of the filter pipe (10) is provided with a limiting groove (15) before the internal threads (16), the limiting groove (15) is an annular groove arranged on the inner wall of the filter pipe (10), and the filter screen (13) is detachably connected by being clamped in the limiting groove.

7. The new filter protecting centerline butterfly valve of claim 1, wherein: The filter screen (13) and the filter screen gland (12) on both sides of the valve body (1) are arranged in a mirror image symmetry.

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