Three-eccentric center butterfly valve

Abstract

According to the technical scheme, the three-eccentric center butterfly valve is characterized in that the three-eccentric center butterfly valve comprises a valve body, the water inlet end of the valve body is provided with a first flange end, the water outlet end of the valve body is provided with a second flange end, and the bottom end of the first flange end and the bottom end of the second flange end are each provided with an abutting part through laser cutting; the two ends of the two abutting parts and the center of the corresponding first flange end head or the second flange end head form abutting included angles alpha which are larger than or equal to 40 degrees and larger than or equal to 50 degrees, and the three-eccentric center butterfly valve can reduce the assembling complexity and reduce the production cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to a butterfly valve, more specifically, it relates to a three eccentric butterfly valve. BACKGROUND

[0002] The butterfly valve is a kind of valve that controls fluid flow by the rotation of butterfly plate in valve body. According to structural characteristics, butterfly valve can be divided into concentric butterfly valve, single eccentric butterfly valve, double eccentric butterfly valve and three eccentric butterfly valve, etc. Each type has its specific design advantage and application occasion.

[0003] Among them, the three eccentric butterfly valve is a kind of high-performance valve design, and its core lies in three unique eccentric structures, which completely changes the sealing principle of traditional butterfly valve.

[0004] In order to solve the problem of valve body placement, the existing butterfly valve adopts the following structure: a lower flange is installed at the bottom of the valve body, and the valve body can be placed stably on the ground by the flatness of the lower flange, but it will cause cost increase, complicated process, and gravity center offset to the middle, and there is a risk of falling. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a three eccentric butterfly valve, which can reduce the assembly complexity and reduce the production cost.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a three eccentric butterfly valve, comprising a valve body, a first flange end head is arranged at the water inlet end of the valve body, a second flange end head is arranged at the water outlet end of the valve body, and a butt joint portion is formed at the bottom end of the first flange end head and the second flange end head by laser cutting.

[0007] The butt joint portion is formed at the bottom end of the first flange end head and the second flange end head by laser cutting.

[0008] The utility model is further provided as follows: the butt joint portion is provided with a protective pad.

[0009] The utility model is further provided as follows: the protective pad comprises a sticky layer and an elastic layer in sequence.

[0010] The utility model is further provided as follows: a plurality of positioning holes are formed at the lower end of the butt joint portion by laser cutting, and a plurality of positioning blocks are arranged on the sticky layer.

[0011] The utility model is further provided as follows: a valve seat, a valve clack and a valve rod are arranged in the valve body, and the valve clack is rotatably connected to the valve seat by the valve rod.

[0012] The utility model further sets up: the sealing surface that is provided with the inclination angle of beta on the valve seat, beta is 10 °.

[0013] The utility model further sets up: the valve clack includes butterfly plate and sealing plate, the sealing plate is detachable installation on the butterfly plate through bolt.

[0014] The utility model further sets up: the connection portion is protruding on the butterfly plate, the middle part of the sealing plate is provided with the connecting groove, the sealing plate is formed by laser cutting, and the sealing plate is installed at the connecting portion through the connecting groove.

[0015] The utility model further sets up: the sealing plate includes the sealing end face towards the water inlet end, when the sealing plate is installed on the butterfly plate, the sealing end face does not exceed the valve seat setting.

[0016] Summarized above, the utility model has following beneficial effect: the first flange end head and the second flange end head are cut into the flat abutment by laser cutting machine, because the existence of the abutment, can the valve body stable place in the ground.

[0017] Based on the existing laser cutting technology, can cut out relatively flat, high consistent plane, namely guarantee the stability of placement, can also reduce the assembly step and reduce the cost.

[0018] The abutment is flatly set up, and the both ends of the abutment form the abutment included angle α with the center of the first flange end head, because the abutment included angle α is between 40 ° to 50 °, namely guarantees that the abutment has enough long space relative to the flange end head, also can avoid the flange end head when connecting to the outside, the situation of the influence of the upper connecting hole position occurs. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is the three-dimensional structure schematic view of valve body;

[0020] Fig. 2 It is the side view of valve body;

[0021] Fig. 3 It is the section view of butterfly valve.

[0022] Sign: 1, valve body;2, first flange end head;3, second flange end head;4, abutment;5, valve seat;6, valve clack;61, butterfly plate;62, sealing plate;621, sealing end face;7, valve stem. DETAILED DESCRIPTION

[0023] The utility model is further explained in detail below in combination with the drawings and embodiments. Same parts are denoted by same reference numerals. It should be noted that the words "front", "back", "left", "right", "top" and "bottom" in the following description refer to the directions in the drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific part.

[0024] Referring to Figs. 1-3 To achieve the above object, the utility model provides the following technical scheme: a three eccentric butterfly valve, including valve body 1, the water inlet end of valve body 1 is provided with first flange end 2, the water outlet end of valve body 1 is provided with second flange end 3, and the bottom end of first flange end 2 and second flange end 3 is formed with abutting portion 4 by laser cutting;

[0025] The two ends of the two abutting portions 4 are formed with an abutting included angle α with the center of the corresponding first flange end 2 or second flange end 3, and 50°≥α≥40°.

[0026] The utility model discloses a design, the lower part of first flange end 2 and second flange end 3 is cut into flat abutting portion 4 by laser cutting machine, due to the existence of the abutting portion 4, valve body 1 can be placed stably on the ground.

[0027] Based on the existing laser cutting technology, a relatively flat and consistent plane can be cut, which ensures stability and reduces assembly steps and costs.

[0028] As Fig. 2 The abutting portion 4 is flat, and the two ends of the abutting portion 4 form an abutting included angle α with the center of the first flange end 2. Since the abutting included angle α is between 40° and 50°, the abutting portion 4 has sufficient space relative to the flange end, and the flange end does not affect the position of the upper connecting hole when connected externally.

[0029] The utility model further provides that the abutting portion 4 is provided with a protective pad. The design of the protective pad improves the stability during placement and has the functions of anti-collision and anti-impact.

[0030] The utility model further provides that the protective pad sequentially includes a sticking layer and an elastic layer. The design of the structure uses a relatively convenient connection mode (sticking connection).

[0031] The utility model further provides that the lower end of the abutting portion 4 is formed with a plurality of positioning holes by laser cutting, and the sticking layer is provided with a plurality of positioning blocks. The design of the structure improves the installation of the protective pad and the abutting portion 4, and avoids the excessive extension of the protective pad affecting external connection.

[0032] The utility model further sets up: the valve body 1 is provided with valve seat 5 and valve clack 6 and valve rod 7, and valve clack 6 is connected in valve seat 5 through valve rod 7 rotation.

[0033] The utility model further sets up: valve clack 6 includes butterfly plate 61 and sealing plate 62, and sealing plate 62 is detachably installed on butterfly plate 61 through bolt.

[0034] The utility model further sets up: the protruding connection portion of butterfly plate 61, the middle part of sealing plate 62 is provided with connecting groove, and sealing plate 62 is formed by laser cutting, and sealing plate 62 is installed at connecting portion through connecting groove. Sealing plate 62 includes sealing end face 621 towards water inlet end, and when sealing plate 62 is installed on butterfly plate 61, sealing end face 621 does not exceed the setting of valve seat 5.

[0035] By laser cutting technology, the required sealing plate 62 can be quickly formed, and due to laser cutting, the sealing plate 62 with small thickness can be formed, that is, the raw material cost is reduced, the process cost can be reduced, and since the sealing end face 621 does not exceed the setting of valve seat 5, when liquid impacts valve clack 6, it can buffer and abut with valve seat 5, thereby playing a buffering role to a certain extent.

[0036] The above is only the preferred implementation mode of the utility model, and the protection scope of the utility model is not only limited to the above-mentioned embodiments, and any technical scheme under the idea of the utility model belongs to the protection scope of the utility model. It should be noted that for ordinary skilled persons in the art, some improvements and decorations without departing from the principle of the utility model can also be considered as the protection scope of the utility model.

Claims

1. A triple-eccentric butterfly valve, characterized in that: It includes a valve body (1), the inlet end of the valve body (1) is provided with a first flange end (2), the outlet end of the valve body (1) is provided with a second flange end (3), and the bottom ends of the first flange end (2) and the second flange end (3) are laser-cut to form an abutment part (4). The two ends of the two abutting parts (4) respectively form an abutting angle α with the center of the corresponding first flange end (2) or second flange end (3), and 50°≥α≥40°.

2. The triple eccentric butterfly valve according to claim 1, characterized in that: The contact part (4) is equipped with a protective pad.

3. A triple eccentric butterfly valve according to claim 2, characterized in that: The protective pad comprises an adhesive layer and an elastic layer in sequence.

4. A triple eccentric butterfly valve according to claim 3, characterized in that: The lower end of the abutment part (4) is laser-cut to form multiple sets of positioning holes, and multiple sets of positioning blocks are provided on the adhesive layer.

5. A triple eccentric butterfly valve according to any one of claims 1 to 4, characterized in that: The valve body (1) is provided with a valve seat (5), a valve disc (6), and a valve stem (7). The valve disc (6) is rotatably connected to the valve seat (5) through the valve stem (7).

6. A triple eccentric butterfly valve according to claim 5, characterized in that: The valve seat (5) is provided with a sealing surface (51) with an inclination angle of β, where β is 10°.

7. A triple eccentric butterfly valve according to claim 5, characterized in that: The valve disc (6) includes a butterfly plate (61) and a sealing plate (62), and the sealing plate (62) is detachably installed on the butterfly plate (61) by bolts.

8. A triple eccentric butterfly valve according to claim 7, characterized in that: The butterfly plate (61) has a protruding connecting part, and the sealing plate (62) has a connecting groove through the middle. The sealing plate (62) is formed by laser cutting, and the sealing plate (62) is installed at the connecting part through the connecting groove.

9. A triple eccentric butterfly valve according to claim 8, characterized in that: The sealing plate (62) includes a sealing end face (621) facing the water inlet end. When the sealing plate (62) is installed on the butterfly plate (61), the sealing end face (621) does not extend beyond the valve seat (5).

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