Resistance-increasing and speed-reducing valve and filling standpipe resistance-increasing and speed-reducing system

Abstract

The resistance-increasing and speed-reducing valve comprises a valve shell, a valve ball and a plurality of supporting edges, the valve shell is vertically arranged, the interior of the valve shell is hollow, the two ends of the valve shell are open, the middle of the valve shell expands outwards to form a cavity expanding part, the supporting edges are vertically arranged on the inner wall of the valve shell, and the valve ball is arranged in the cavity expanding part. The multiple supporting edges are arranged on the inner wall of the valve shell and distributed on the inner wall of the valve shell at intervals in the annular direction, the lower ends of the multiple supporting edges are bent to be close to one another to jointly form a supporting part located at the lower end in the cavity expanding part, and the valve ball is located among the multiple supporting edges and is supported on the supporting part, so that the speed of mortar can be reduced through the valve ball, and the speed of the mortar is reduced. In addition, the valve ball is supported at the supporting part, so that the valve ball can rotate under the high-speed impact of the mortar, the abrasion degrees of all parts of the valve ball are consistent, the valve ball is always kept in a ball shape, and the durability of the resistance-increasing speed-reducing valve is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the mining filling technical field especially, relates to a kind of resistance increasing speed reducing valve and filling vertical pipe resistance increasing speed reducing system. BACKGROUND

[0002] In the field of non-coal solid mine exploitation engineering, filling mining method has become the modern mainstream mining method due to many advantages such as high resource recovery rate, high safety and resource utilization of tailings solid waste. The filling pipeline transportation involved in the filling mining method needs to drill filling boreholes in advance, and the filling pipeline is fixed in the filling borehole by concrete mortar. Once the filling pipeline is used for a period of time, it will be broken due to erosion and abrasive wear, causing the entire vertical conveying pipeline system including the filling borehole to be scrapped. Engineering practice shows that the main reason for the failure of deep well vertical filling pipeline in the gravity filling process is the impact erosion and abrasive wear caused by the high flow velocity of the filling slurry in the pipeline. Once the filling pipeline is severely worn, it will be scrapped together with the filling borehole and the filling pipeline. At present, the way to solve this problem is to install resistance increasing speed reducing valves on the filling pipeline at intervals. For example, a damper (equivalent to a resistance increasing speed reducing valve) is disclosed in document No. CN112814731B "Filling vertical pipe speed reducing resistance increasing system". However, the structure of the damper is complex and the assembly is cumbersome. SUMMARY

[0003] To solve the above technical problems, the purpose of the utility model is to provide a resistance increasing speed reducing valve with simple structure and convenient assembly.

[0004] To achieve the above purpose, the technical scheme of the utility model is as follows: a resistance increasing speed reducing valve, comprising a valve shell, a valve ball and a plurality of support edges, the valve shell is vertically arranged, hollow inside and open at both ends, the middle part of the valve shell is outwardly enlarged to form an expansion chamber, a plurality of support edges are vertically arranged on the inner wall of the valve shell and are distributed at intervals along the ring direction on the inner wall of the valve shell, the lower ends of the plurality of support edges are bent to approach each other to form a supporting part together at the lower end in the expansion chamber, and the valve ball is located between the plurality of support edges and is supported on the supporting part.

[0005] The beneficial effects of the above technical scheme are that the valve ball can reduce the speed of the mortar, but does not affect the flow of the mortar through the resistance increasing speed reducing valve. In addition, the valve ball is supported on the supporting part, so that the valve ball can rotate under the high-speed impact of the mortar, so that the degree of wear of the valve ball is consistent and always maintains a spherical shape, to improve the durability of the resistance increasing speed reducing valve.

[0006] In the above technical scheme, the cross section of the valve shell is circular, and the diameter of the valve ball is smaller than the diameter of the upper end of the valve shell.

[0007] The beneficial effects of the above technical solution are that the valve ball can be directly put in or taken out through the upper end of the valve shell, and the valve ball is more convenient to replace.

[0008] The lower end of the support rib extends downward to the inner lower end of the valve shell in the above technical solution.

[0009] The beneficial effects of the above technical solution are that the lower part of the support rib is more substantial (has more wear allowance), thereby improving the durability of the support rib.

[0010] The multiple support ribs are evenly distributed in the annular direction in the expansion cavity in the above technical solution.

[0011] The beneficial effects of the above technical solution are that the entire valve shell has good aesthetics, and the multiple support ribs have better support effect on the valve ball.

[0012] The support rib is provided with 3-6 in the above technical solution.

[0013] The beneficial effects of the above technical solution are that the support stability of the valve ball in the valve shell is better.

[0014] The support rib is integrally formed with the valve shell in the above technical solution.

[0015] The beneficial effects of the above technical solution are that the valve shell and the support rib can be cast, have high structural strength, and are more convenient to produce and process.

[0016] The second purpose of the utility model is to provide a filling vertical pipe resistance increasing and speed reducing system which has simple structure and good durability.

[0017] In order to achieve the above purpose, another technical solution of the utility model is as follows: a filling vertical pipe resistance increasing and speed reducing system, comprising a filling vertical pipe, a material receiving hopper, and multiple resistance increasing and speed reducing valves as described above, the filling vertical pipe is vertically arranged, the multiple resistance increasing and speed reducing valves are arranged on the filling vertical pipe and are spaced along the length direction of the filling vertical pipe, and the material receiving hopper is arranged at the upper end of the filling vertical pipe.

[0018] The beneficial effects of the above technical solution are that the mortar can be speeded down by one resistance increasing and speed reducing valve every interval distance in the falling process, thereby avoiding that the filling vertical pipe is seriously worn due to too high speed reduction at the end of the filling vertical pipe.

[0019] The filling vertical pipe comprises multiple vertically arranged and abutted sub-vertical pipe sections in the above technical solution, the resistance increasing and speed reducing valve is arranged at the abutment of any two adjacent sub-vertical pipe sections, and the material receiving hopper is arranged at the upper end of the uppermost sub-vertical pipe section.

[0020] The beneficial effects of the above technical solution are that one resistance-increasing speed-reducing valve is arranged between two adjacent resistance-increasing speed-reducing valves, and the assembly is more convenient.

[0021] The technical solution further comprises a plurality of threaded sleeves, the threaded sleeves are provided with internal threads, the two ends of the sub-vertical pipe section and the valve shell are provided with external threads, and the sub-vertical pipe section and the valve shell are threadedly connected at the abutment positions.

[0022] The beneficial effects of the above technical solution are that the abutment between the sub-vertical pipe section and the valve shell is more convenient, and the abutment effect is better.

[0023] The technical solution further comprises that the filling vertical pipe and the resistance-increasing speed-reducing valve are made of wear-resistant materials.

[0024] The beneficial effects of the above technical solution are that the wear resistance of the entire filling vertical pipe resistance-increasing speed-reducing system is better. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a sectional view of the resistance-increasing speed-reducing valve in the embodiment 1 of the present application.

[0026] Figure 2 It is a top view of the valve shell and the support rib in the embodiment 1 of the present application.

[0027] Figure 3 It is a structural schematic view of the filling vertical pipe resistance-increasing speed-reducing system in the embodiment 2 of the present application.

[0028] In the figure: 1, resistance-increasing speed-reducing valve; 11, valve shell; 111, cavity expansion part; 112, upper abutment pipe; 113, lower abutment pipe; 12, valve ball; 13, support rib; 2, filling vertical pipe; 21, sub-vertical pipe section; 3, material receiving hopper; 4, threaded sleeve. DETAILED DESCRIPTION

[0029] The principles and features of the present application are described below in combination with the drawings, and the examples are only used to explain the present application and are not used to limit the scope of the present application. In the following paragraphs, the present application is described in more detail by way of example with reference to the drawings. The advantages and features of the present application will be more apparent from the following description and claims. It should be noted that the drawings are very simplified and use non-precise proportions, and are only used to conveniently and clearly assist in the purpose of describing the embodiments of the present application.

[0030] Embodiment 1

[0031] As Figure 1 and Figure 2As shown, this embodiment provides a resistance-increasing and speed-reducing valve, including a valve housing 11, a valve ball 12, and multiple support ribs 13. The valve housing 11 is vertically arranged, hollow inside, and open at both ends. The middle part of the valve housing 11 expands outward to form an expansion cavity 111. Multiple support ribs 13 are vertically arranged on the inner wall of the valve housing 11 and are distributed circumferentially on the inner wall of the valve housing 11. The lower ends of the multiple support ribs 13 are bent to approach each other to form a support portion located at the lower end of the expansion cavity 111. The valve ball 12 is located between the multiple support ribs 13 and is supported on the support portion. In this way, the valve ball can reduce the speed of the mortar without affecting the flow of the mortar through the resistance-increasing and speed-reducing valve. In addition, by supporting the valve ball at the support portion, the valve ball can rotate under the high-speed impact of the mortar, thereby making the wear degree of the valve ball uniform and always maintaining the spherical shape, so as to improve the durability of the resistance-increasing and speed-reducing valve.

[0032] In the above technical solution, the cross-section (i.e., the cross section) of the valve body 11 is annular, and the diameter of the valve ball 12 is smaller than the diameter of the upper end of the valve body 11. This allows the valve ball to be directly inserted or removed through the upper end of the valve body, making it more convenient to replace the valve ball.

[0033] like Figure 1 As shown, in this embodiment, the outer wall of the expansion cavity is generally arc-shaped (more specifically, the middle part of the valve body is equivalent to a hollow sphere). In this embodiment, the upper and lower ends of the valve body are still tubular, namely the upper connecting pipe 112 and the lower connecting pipe 113, respectively. The upper connecting pipe 112 and the lower connecting pipe 113 are coaxially distributed (and the center of the sphere of the expansion cavity 111 is located on the axis of the upper connecting pipe 112 and the lower connecting pipe 113).

[0034] In this embodiment, the diameter of the valve ball is slightly smaller than the inner diameter of the upper connecting pipe 112 (the difference between the two diameters can be 1-2 mm, so that the valve ball can be directly inserted into the expansion cavity through the upper end of the valve body).

[0035] In this embodiment, the inner and outer diameters of the upper and lower connecting pipes can be the same.

[0036] like Figure 1 As shown, in the above technical solution, the lower end of the support rib 13 extends downward to the inner lower end of the valve body 11, which makes the lower part of the support rib thicker (with more wear resistance allowance), thereby improving the durability of the support rib.

[0037] like Figure 1As shown, the support edges in the embodiment are vertically arranged on the inner wall of the expansion cavity, and the other side is towards the ball center of the expansion cavity. The side of the support edge close to the ball center of the expansion cavity is a straight edge side, only the lower end is a concave arc shape to the middle to form a supporting part. The diameter of the circular area surrounded by the upper end of the multiple support edges on one side is only slightly larger than the diameter of the valve ball, so that the valve ball can fall between the multiple support edges and be supported on the supporting part, and the upper end of the multiple support edges can limit the valve ball in the circumferential direction to avoid the valve ball from deviating in the expansion cavity. The lower end of the support edge is a concave arc shape to the inner middle, so that the supporting part can better match the valve ball (so that there is no dead angle above the supporting part, which can avoid the deposition of mortar on the supporting part to cause the valve ball to be stuck when rolling).

[0038] As shown in Figure 2 In the above technical solution, the multiple support edges 13 are uniformly distributed in the expansion cavity 111 along the ring direction. This makes the entire valve shell have good appearance, and the support effect of the multiple support edges on the valve ball is better. The support edges 13 are provided with 3-6 (which can be 3, 4, 5 or 6). This makes the support stability of the valve ball in the valve shell better.

[0039] In the above technical solution, the support edges 13 are integrally formed with the valve shell 11. This makes the valve shell and the support edges can be casted, which has high structural strength and is more convenient to produce and process.

[0040] The resistance-increasing and speed-reducing valve provided in the embodiment has the same effect as the damper in document CN112814731 B “A filling vertical pipe speed-reducing and resistance-increasing system”. The difference between the two is that the valve shell and the support edges in the embodiment are integrally formed by casting, and the valve ball can directly enter and exit from the upper end of the valve shell. The shell and the support blocks of the damper are assembled separately, and the damper block (equivalent to the valve ball in the embodiment) needs to be disassembled from the shell before being loaded into the shell or taken out of the shell.

[0041] Embodiment 2

[0042] As shown in Figure 3 The embodiment provides a filling vertical pipe resistance-increasing and speed-reducing system, which comprises a filling vertical pipe 2, a material receiving hopper 3 and multiple resistance-increasing and speed-reducing valves 1 as described in embodiment 1. The filling vertical pipe 2 is vertically arranged, and the multiple resistance-increasing and speed-reducing valves 1 are arranged on the filling vertical pipe 2 and are distributed along the length direction of the filling vertical pipe 2. The material receiving hopper 3 is arranged at the upper end of the filling vertical pipe 2. In this way, the mortar can be speed-reduced by one resistance-increasing and speed-reducing valve every interval during the falling process, so as to avoid that the mortar causes serious wear of the filling vertical pipe due to excessive speed reduction at the end of the filling vertical pipe.

[0043] As shown in Figure 3As shown in the technical scheme, the filling vertical pipe 2 comprises a plurality of sub-vertical pipe sections 21 arranged vertically and abutted with each other, the abutment between any two adjacent sub-vertical pipe sections 21 is provided with the resistance increasing and speed reducing valve 1, and the material receiving hopper 3 is arranged at the upper end of the uppermost sub-vertical pipe section 21. Thus, the resistance increasing and speed reducing valve is arranged between two adjacent resistance increasing and speed reducing valves, and the assembly is more convenient. Preferably, the filling vertical pipe resistance increasing and speed reducing system further comprises a plurality of threaded sleeves 4, the threaded sleeves 4 are provided with internal threads, the two ends of the sub-vertical pipe sections 21 and the valve housings 11 are provided with external threads, and the abutment between the sub-vertical pipe sections 21 and the valve housings 11 is threadedly connected with the threaded sleeves 4. Thus, the abutment between the sub-vertical pipe sections and the valve housings is more convenient and better. Specifically, in the embodiment, the ends of the adjacent sub-vertical pipe sections and valve housings close to each other are threadedly connected with the threaded sleeves to realize the abutment (the ends of the sub-vertical pipe sections and the valve housings close to each other abut against each other at the threaded sleeves).

[0044] Of course, the abutment between the valve housings and the sub-vertical pipe sections can also be connected by means of a thread connection (similar to the thread abutment between drill pipes) or a flange abutment, which both belong to the prior art and will not be described herein.

[0045] Of course, in the case that the length of the sub-vertical pipe section is relatively long, each sub-vertical pipe section can also be formed by abutting a plurality of pipe bodies (and the length of each pipe body can be about 10 m, so that the sub-vertical pipe section can be disassembled into a plurality of pipe bodies during transportation, thereby making the transportation more convenient), and the abutment between the adjacent two pipe bodies can be similar to the abutment between the sub-vertical pipe section and the valve housing, which will not be described herein.

[0046] Of course, in the case that the length of the sub-vertical pipe section is relatively long, each sub-vertical pipe section can also be formed by abutting a plurality of pipe bodies (and the length of each pipe body can be about 10 m, so that the sub-vertical pipe section can be disassembled into a plurality of pipe bodies during transportation, thereby making the transportation more convenient), and the abutment between the adjacent two pipe bodies can be similar to the abutment between the sub-vertical pipe section and the valve housing, which will not be described herein.

[0047] In the technical scheme, the filling vertical pipe 2 and the resistance increasing and speed reducing valve 1 are made of wear-resistant materials, so that the durability of the filling vertical pipe resistance increasing and speed reducing system is better. Specifically, the filling vertical pipe can be a double-metal composite pipe, the valve housings and the supporting edges can be wear-resistant cast steel pieces containing chromium, and the valve ball can be a wear-resistant alloy piece made of high-manganese and high-chromium materials.

[0048] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form; any person skilled in the art can smoothly implement the present application according to the drawings shown in the specification and the above description; however, any person skilled in the art can make slight changes, modifications and equivalent changes of the present application within the scope of the technical scheme of the present application, and the equivalent embodiments of the present application are still within the protection scope of the technical scheme of the present application.

Claims

1. A resistance increasing and speed reducing valve, characterized by, The valve comprises a valve shell (11), a valve ball (12) and a plurality of support ribs (13). The valve shell (11) is vertically arranged, hollow inside and open at both ends. The middle part of the valve shell (11) is expanded outward to form an expansion cavity (111). A plurality of support ribs (13) are vertically arranged on the inner wall of the valve shell (11) and are spaced along the ring direction. The lower ends of the plurality of support ribs (13) are bent to be close to each other to form a supporting part at the lower end of the expansion cavity (111). The valve ball (12) is located between the plurality of support ribs (13) and is supported on the supporting part.

2. The resistance increasing and speed reducing valve according to claim 1, characterized by The cross section of the valve shell (11) is a circular ring, and the diameter of the valve ball (12) is smaller than the diameter of the upper end of the valve shell (11).

3. The resistance increasing and speed reducing valve according to claim 1, wherein The lower end of the support rib (13) extends downward to the lower end of the valve shell (11).

4. The resistance increasing and speed reducing valve according to claim 1, wherein The plurality of support ribs (13) are evenly distributed along the ring direction in the expansion cavity (111).

5. The resistance increasing and speed reducing valve according to claim 1, wherein The support rib (13) is provided with 3-6 support ribs.

6. The resistance increasing and speed reducing valve according to claim 1, wherein The support rib (13) is integrally formed with the valve shell (11).

7. A fill riser resistance speed reduction system characterized by, The valve comprises a filling vertical pipe (2), a receiving hopper (3) and a plurality of resistance reduction valves (1) according to any one of claims 1-6. The filling vertical pipe (2) is vertically arranged. A plurality of resistance reduction valves (1) are arranged on the filling vertical pipe (2) and are spaced along the length direction of the filling vertical pipe (2). The receiving hopper (3) is arranged at the upper end of the filling vertical pipe (2).

8. The fill standpipe resistance reduction system of claim 7, wherein, The filling vertical pipe (2) comprises a plurality of vertically arranged and abutted sub-vertical pipe segments (21). Any two adjacent sub-vertical pipe segments (21) are provided with resistance reduction valves (1) at the abutted part. The receiving hopper (3) is arranged at the upper end of the uppermost sub-vertical pipe segment (21).

9. The fill standpipe resistance reduction system of claim 8, wherein, A plurality of threaded sleeves (4) are further provided. The threaded sleeves (4) are provided with internal threads. The two ends of the sub-vertical pipe segment (21) and the valve shell (11) are provided with external threads. The abutted parts of the sub-vertical pipe segment (21) and the valve shell (11) are threadedly connected with the threaded sleeves (4).

10. The fill standpipe resistance reduction system of claim 7, wherein, The filling vertical pipe (2) and the resistance reduction valve (1) are made of wear-resistant materials.

Images