A small-diameter straight-through check valve for small-flow high-concentration sludge industry

Abstract

The utility model discloses a small drift straight -through check valve for small flow high concentration sludge industry, including valve body, the valve body includes valve body upper portion and valve body lower part, and valve body upper portion is connected with the screw thread of valve body lower part, and the cavity is formed in valve body lower part, is equipped with the plate type valve element in the cavity, is equipped with the sealing surface in valve body lower part inner chamber, and plate type valve element is contacted with the sealing surface, and is equipped with the pressure block between valve body upper portion and valve body lower part, is equipped with the limit hole on the pressure block, and the valve element guide pillar is equipped with in the plate type valve element center upward, and the valve element guide pillar passes through the limit hole, and contacts limit hole. The utility model discloses through the hollow space of pressure block upper portion and the inner wall of increasing lower part check valve and the valve element space, increase the sludge overflow space, and then guarantee the sludge not easy to jam when running.

Description

Technical Field

[0001] This utility model relates to the field of one-way valve technology, specifically a small-diameter straight-through one-way valve for use in the low-flow, high-concentration sludge industry. Background Technology

[0002] Currently, most small-diameter straight-through check valves with a diameter of DN50 or less on the market are pipe-type check valves; such as Figure 1 As shown, its structure is one-sided feeding and one-sided discharging. It is equipped with a compression spring and a sealing valve core. Different opening pressures are set by the degree of spring compression. However, due to structural limitations, the internal flow gap is small. The flow medium can only be water and oil, and there must be no impurities, otherwise the check valve will easily get stuck. Check valves with a diameter greater than DN50 on the market are basically flanged. They are large in size and installation dimensions. However, when the flow requirement is less than 1 cubic meter / h, the check valve is too large, which will cause installation difficulties and overall equipment incoordination. It is also prone to vibration during operation. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing a small-diameter straight-through check valve for use in industries with small flow rates and high concentrations of sludge, which increases the sludge flow space.

[0004] To achieve the above objectives, this utility model provides a small-diameter straight-through check valve for use in the low-flow, high-concentration sludge industry, which adopts the following technical solution: A small-diameter straight-through one-way valve for use in the low-flow, high-concentration sludge industry includes a valve body comprising an upper part and a lower part, the upper part and the lower part being threadedly connected. A cavity is formed in the lower part of the valve body, and a plate-type valve core is disposed within the cavity. A sealing surface is provided within the inner cavity of the lower part of the valve body, and the plate-type valve core contacts the sealing surface. A clamping block is provided between the upper part and the lower part of the valve body, and a limiting hole is provided on the clamping block. A valve core guide post is provided at the center of the plate-type valve core, the valve core guide post passing through the limiting hole and contacting the limiting hole.

[0005] A further improvement of this utility model on a small-diameter straight-through one-way valve for low-flow, high-concentration sludge industry is that the upper part of the valve body includes an upper plate, and a cylindrical threaded connection part is provided downward on the outer periphery of the upper plate. A discharge port is provided in the center of the upper plate. The lower part of the valve body includes a lower plate, and an upward cylindrical second threaded connection part is provided on the lower plate. The threaded connection part and the second threaded connection part are connected in cooperation. The second threaded connection part is located inside the threaded connection part. A feed port is provided in the center of the lower plate.

[0006] A further improvement of this utility model to a small-diameter straight-through one-way valve for low-flow, high-concentration sludge industries is that an O-ring is provided between the threaded connection part and the second threaded connection part. A further improvement of this utility model to a small-diameter straight-through one-way valve for the low-flow, high-concentration sludge industry is that the sealing surface is located above the feed inlet of the lower plate.

[0007] A further improvement of this utility model to a small-diameter straight-through one-way valve for the low-flow, high-concentration sludge industry is that the clamping block is located between the upper plate and the upper end face of the second threaded part.

[0008] Compared with the prior art, the beneficial effects of this utility model are: This invention increases the sludge flow space by creating a hollow space at the top of the clamping block and increasing the space between the inner wall and the valve core of the lower one-way valve, thereby ensuring that sludge is not easily blocked during operation. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 A schematic diagram of the structure of an existing small-diameter straight-through pipe check valve with a diameter of DN50 or less; Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 for Figure 2 A top-view structural diagram.

[0010] In the diagram: 1 Upper plate, 2 Threaded connection, 3 Discharge port, 4 Lower plate, 5 Second threaded connection, 6 Inlet, 7 Sealing surface, 8 Plate valve core, 9 Valve core guide post, 10 Clamping block, 11 O-ring, 12 Limiting hole. Detailed Implementation

[0011] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0012] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0013] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0015] like Figure 2 , Figure 3 As shown, a small-diameter straight-through one-way valve for the low-flow, high-concentration sludge industry includes a valve body, comprising an upper part and a lower part, which are threadedly connected. A cavity is formed in the lower part of the valve body, and a plate-type valve core 8 is provided in the cavity. A sealing surface 7 is provided in the inner cavity of the lower part of the valve body, and the plate-type valve core contacts the sealing surface. A clamping block 10 is provided between the upper and lower parts of the valve body, and a limiting hole 12 is provided on the clamping block. A valve core guide post 9 is provided at the center of the plate-type valve core, which passes through the limiting hole and contacts the limiting hole.

[0016] Specifically, the upper part of the valve body includes an upper plate 1, with a cylindrical threaded connection part 2 on the outer periphery of the upper plate and a discharge port 3 at the center of the upper plate. The lower part of the valve body includes a lower plate 4, with an upward cylindrical second threaded connection part 5 on the lower plate. The threaded connection part and the second threaded connection part are connected in a mating manner, with the second threaded connection part located inside the threaded connection part. A feed port 6 is located at the center of the lower plate.

[0017] An O-ring 11 is provided between the threaded connection part and the second threaded connection part.

[0018] The sealing surface is located above the feed inlet of the lower plate. It works in conjunction with the plate valve core to achieve a seal, thereby ensuring the stable operation of the check valve.

[0019] The clamping block is located between the upper plate and the upper end face of the second threaded part.

[0020] This utility model also adopts a straight-through structure, with the upper and lower parts of the one-way valve connected by threads, and an O-ring seal on the lower radial surface. A clamping block is installed on the upper part of the one-way valve, with the central hole serving as a limiting hole, cooperating with the valve core guide post on the plate valve core to guide the up-and-down movement of the plate valve core. The hollow space at the top of the clamping block and the increased space between the inner wall of the lower one-way valve and the valve core increase the sludge flow space, ensuring that sludge is not easily clogged during operation.

[0021] Although the present invention 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 the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention 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, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A small-diameter straight-through check valve for use in the low-flow, high-concentration sludge industry, characterized in that, The valve body includes an upper part and a lower part, which are threadedly connected. A cavity is formed in the lower part of the valve body, and a plate valve core is provided in the cavity. A sealing surface is provided in the inner cavity of the lower part of the valve body, and the plate valve core contacts the sealing surface. A clamping block is provided between the upper and lower parts of the valve body, and a limiting hole is provided on the clamping block. A valve core guide post is provided at the center of the plate valve core, which passes through the limiting hole and contacts the limiting hole.

2. A small-ductile straight-through check valve for small-flow high-concentration sludge industry according to claim 1, characterized in that, The upper part of the valve body includes an upper plate, and a cylindrical threaded connection part is provided on the outer periphery of the upper plate. A discharge port is provided in the center of the upper plate. The lower part of the valve body includes a lower plate, and an upward cylindrical second threaded connection part is provided on the lower plate. The threaded connection part and the second threaded connection part are connected in a fitting manner. The second threaded connection part is located inside the threaded connection part. A feed port is provided in the center of the lower plate.

3. A small-ductile straight-through check valve for small-flow high-concentration sludge industry according to claim 2, characterized in that, An O-ring is provided between the threaded connection part and the second threaded connection part.

4. The small-ductile straight-through check valve for small-flow high-concentration sludge industry according to claim 3, characterized in that, The sealing surface is located above the feed inlet of the lower plate.

5. A reduced port straight check valve for use in low flow high concentration sludge industry as claimed in claim 4 wherein, The clamping block is located between the upper plate and the upper end face of the second threaded part.

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