Bidirectional valve body blank

Abstract

The utility model discloses a two-way valve body blank in the technical field of valve manufacturing, which comprises a valve body outer blank layer and a valve body inner blank body, the valve body inner blank body is arranged on the inner side of the valve body outer blank layer, a material injection port is connected above the valve body outer blank layer, a first sealing end is arranged above the valve body inner blank body, and a second sealing end is arranged above the valve body inner blank body. Second connecting ends are symmetrically installed at the two ends of the valve body inner blank layer, stepped reamed holes are formed in the ends of the second connecting ends, flange base molds are symmetrically installed at the two ends of the valve body outer blank layer, and mold grooves are formed in the inner sides of the flange base molds. The inner side of the flange base mold is connected with the two ends of the valve body outer blank layer through first connecting ends, flow guide holes are formed in the surfaces of the first connecting ends, and a machining datum plane is formed through stepped reamed holes and three-level aperture difference, so that subsequent turning positioning errors are reduced, and machining efficiency is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of valve manufacturing technology, specifically relating to a bidirectional valve body blank. Background Technology

[0002] Valves are control components in fluid transport systems, possessing functions such as shut-off, regulation, flow guidance, backflow prevention, pressure stabilization, flow diversion, and pressure relief. Valves used in fluid control systems range from the simplest shut-off valves to various valves used in extremely complex automated control systems, with a wide variety of types and specifications. Two-way valves generally refer to hard-seal butterfly valves. Ordinary hard-seal butterfly valves only allow unidirectional flow; reverse flow will cause leakage. Two-way pressure butterfly valves are based on ordinary hard-seal butterfly valves with improved manufacturing processes, enabling pressure inflow from both sides. The valve body blank of a two-way valve is a raw material used to manufacture two-way valves, characterized by a specific structure and design to facilitate subsequent processing and manufacturing.

[0003] Existing bidirectional valve body blanks have redundant pre-reserved structures, requiring multiple cutting and forming processes, resulting in material waste. Furthermore, most valve body blanks have insufficient sealing performance, relying on subsequent machining, which can easily lead to coaxiality deviations and leakage. In addition, the connection end structure is simple and cannot be compatible with various pipe interface types such as flanges and threads. Therefore, we propose a bidirectional valve body blank. Utility Model Content

[0004] The purpose of this invention is to provide a bidirectional valve body blank to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bidirectional valve body blank, comprising an outer blank layer and an inner blank layer, wherein the inner blank layer is provided on the inner side of the outer blank layer, a material inlet is connected to the upper part of the outer blank layer, a first sealing end is installed on the upper part of the inner blank layer, and second connecting ends are symmetrically installed at both ends of the inner blank layer, wherein a stepped enlarged hole is installed at the end of the second connecting end.

[0006] Preferably, flange base molds are symmetrically installed at both ends of the outer blank layer of the valve body. The inner side of the flange base mold is provided with a mold groove. The inner side of the flange base mold is connected to both ends of the outer blank layer of the valve body through a first connecting end. The surface of the first connecting end is provided with a guide hole.

[0007] Preferably, the inner side of the mold groove is provided with a bolt hole boss, and a guide shaft is fixedly connected to one side of the bolt hole boss. Multiple sets of bolt hole bosses and guide shafts are evenly arranged around the axial circumference of the flange base mold.

[0008] Preferably, the outer end of the stepped enlarged hole is fixedly connected to a second sealing end, and the end of the second sealing end is fixedly connected to the inner wall of the flange base mold.

[0009] Preferably, the port of the stepped enlarged hole is provided with a sealing surface pre-cast layer, and the sealing surface pre-cast layer is conical.

[0010] Preferably, the outer surface of the first connecting end is provided with a threaded pre-cast groove, and multiple threaded pre-cast grooves are evenly arranged.

[0011] Preferably, a first reserved portion is provided on the upper and lower inner sides between the outer blank layer of the valve body and the inner blank layer of the valve body, and a second reserved portion is connected to one side of the first reserved portion.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By setting a stepped hole expansion, a machining reference surface is formed through the three-level hole diameter difference, thereby reducing the positioning error of subsequent turning and greatly improving the machining efficiency.

[0014] 2. With the set mold groove and guide shaft, it can support direct processing into standard flanges, reduce drilling time in the later stage, avoid the risk of drill bit deviation, and facilitate the connection and use of valve body in the later stage. With the set thread pre-cast groove, the inner surface of the flange base mold can be a threaded interface, increasing the diversity of connection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of the present utility model;

[0016] Figure 2 This is a schematic diagram of the internal cross-section of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of the flange base mold of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal blank structure of the valve body of this utility model.

[0019] In the figure: 1. Valve body blank layer; 101. Injection port; 102. Flange base mold; 103. Mold groove; 104. Bolt hole boss; 105. Guide shaft; 106. First connecting end; 107. Thread pre-cast groove; 108. Guide hole; 2. Valve body blank layer; 201. First sealing end; 202. Second connecting end; 203. Stepped enlarged hole; 204. Second sealing end; 205. Sealing surface pre-cast layer; 3. First reserved part; 4. Second reserved part. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a bidirectional valve body blank, including an outer blank layer 1 and an inner blank 2. The inner blank 2 is provided on the inner side of the outer blank layer 1. An injection port 101 is connected to the upper part of the outer blank layer 1. A first sealing end 201 is installed on the upper part of the inner blank 2. Second connecting ends 202 are symmetrically installed at both ends of the inner blank 2. A stepped expansion hole 203 is installed at the end of the second connecting end 202.

[0022] Specifically, flange base molds 102 are symmetrically installed at both ends of the outer blank layer 1 of the valve body. The inner side of the flange base mold 102 is provided with a mold groove 103. The inner side of the flange base mold 102 is connected to both ends of the outer blank layer 1 of the valve body through a first connecting end 106. A guide hole 108 is opened on the surface of the first connecting end 106.

[0023] Specifically, a bolt hole boss 104 is provided on the inner side of the mold groove 103, and a guide shaft 105 is fixedly connected to one side of the bolt hole boss 104. Multiple sets of bolt hole bosses 104 and guide shafts 105 are evenly arranged around the axial circumference of the flange base mold 102.

[0024] Specifically, the outer end of the stepped expansion hole 203 is fixedly connected to a second sealing end 204, and the end of the second sealing end 204 is fixedly connected to the inner wall of the flange base mold 102.

[0025] Specifically, the port of the stepped enlarged hole 203 is provided with a sealing surface pre-cast layer 205, which is conical.

[0026] Specifically, the outer surface of the first connecting end 106 is provided with a threaded pre-cast groove 107, and multiple threaded pre-cast grooves 107 are evenly arranged.

[0027] Specifically, a first reserved portion 3 is provided on the upper and lower inner sides between the outer blank layer 1 and the inner blank layer 2 of the valve body, and a second reserved portion 4 is connected to one side of the first reserved portion 3.

[0028] In this embodiment, the stepped enlarged hole 203 forms a machining reference surface through the three-level hole diameter difference, thereby reducing subsequent turning positioning errors and greatly improving machining efficiency. The tapered sealing surface pre-cast layer 205 retains a small amount of finishing allowance, which greatly reduces the amount of cutting compared to traditional blanks. The flange base mold 102 adopts a hexagonal flange. Through the mold groove 103 and guide shaft 105, it can support direct machining into a standard flange, reducing subsequent drilling time, avoiding the risk of drill bit deviation, and facilitating the connection and use of the valve body later. The thread pre-cast groove 107 allows the inner surface of the flange base mold 102 to be a threaded interface, increasing the diversity of connections.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bidirectional valve body blank, comprising an outer blank layer (1) and an inner blank layer (2), characterized in that: The inner side of the outer blank layer (1) of the valve body is provided with an inner blank body (2). The upper part of the outer blank layer (1) of the valve body is connected to a filling port (101). The upper part of the inner blank body (2) of the valve body is provided with a first sealing end (201). The two ends of the inner blank body (2) of the valve body are symmetrically provided with second connecting ends (202). The end of the second connecting end (202) is provided with a stepped expansion hole (203).

2. The bidirectional valve body blank according to claim 1, characterized in that: Flange base molds (102) are symmetrically installed at both ends of the outer blank layer (1) of the valve body. The inner side of the flange base mold (102) is provided with a mold groove (103). The inner side of the flange base mold (102) is connected to both ends of the outer blank layer (1) of the valve body through a first connecting end (106). The surface of the first connecting end (106) is provided with a guide hole (108).

3. The bidirectional valve body blank according to claim 2, characterized in that: The inner side of the mold groove (103) is provided with a bolt hole boss (104), and a guide shaft (105) is fixedly connected to one side of the bolt hole boss (104). Multiple sets of bolt hole bosses (104) and guide shafts (105) are evenly arranged around the axial circumference of the flange base mold (102).

4. The bidirectional valve body blank according to claim 1, characterized in that: The outer end of the stepped expansion hole (203) is fixedly connected to a second sealing end (204), and the end of the second sealing end (204) is fixedly connected to the inner wall of the flange base mold (102).

5. The bidirectional valve body blank according to claim 1, characterized in that: The port of the stepped enlarged hole (203) is provided with a sealing surface pre-cast layer (205), which is conical.

6. The bidirectional valve body blank according to claim 2, characterized in that: The outer surface of the first connecting end (106) is provided with a threaded pre-cast groove (107), and the threaded pre-cast groove (107) is evenly provided in multiple rows.

7. The bidirectional valve body blank according to claim 1, characterized in that: The upper and lower inner sides of the outer blank layer (1) of the valve body and the inner blank layer (2) of the valve body are provided with a first reserved part (3), and a second reserved part (4) is connected to one side of the first reserved part (3).

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