Coal mine pump control valve easy to replace

Abstract

The utility model discloses an easy-to-replace coal mine pump control valve which comprises a valve body, two pipelines are symmetrically connected to the outer side of the valve body, one pipeline is an inlet, the other pipeline is an outlet, connecting pipes are installed in the two pipelines in a sliding mode, flanges are welded to the outer sides of the two connecting pipes, one of the two flanges is connected with a coal mine pump, and the other of the two flanges is connected with the other of the two pipelines. One pipeline is connected with a conveying pipeline, the other pipeline is connected with a conveying pipeline, sleeves are rotationally installed on the outer sides of the two pipelines, internal thread rings are fixedly arranged on the inner sides of the two sleeves, the outer sides of the two connecting pipes are sleeved with external thread rings, the internal thread rings are in threaded connection with the external thread rings, limiting grooves are formed in the inner sides of the sleeves, and limiting rings are fixedly installed on the outer sides of the pipelines. According to the device, by adjusting the lengths of the two connecting pipes, an enough distance can be reserved between the conveying pipeline and the coal mine pump, so that the valve body is convenient to install, excessive extrusion installation is avoided, the working efficiency is improved, and the labor intensity is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable bridge technical field, especially easy to replace's coal mine pump control valve. BACKGROUND

[0002] The mine multistage pump is a kind of fluid delivery equipment specially designed for mining industry, with the characteristics of high efficiency, wear resistance and strong adaptability. It is mainly used in mine drainage, factory drainage and urban sewage plant fields. The valve needs to be used when the coal mine pump is used.

[0003] The traditional valve includes two flange interfaces, one end of the flange is connected with the coal mine pump, the other end of the flange is connected with the transportation pipeline, and the distance between the transportation pipeline and the coal mine pump is slightly smaller than the size of a valve, so that the valve needs to be squeezed to install when replacing, which is complicated to operate, increases labor intensity and reduces work efficiency. UTILITY MODEL CONTENT

[0004] In order to overcome the shortcomings of the prior art, the utility model provides an easy-to-replace coal mine pump control valve, which can reserve enough space between the transportation pipeline and the coal mine pump by adjusting the length of the two connecting pipes to facilitate the installation of the valve body, avoid excessive squeezing and installation, improve work efficiency and reduce labor intensity.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: an easy-to-replace coal mine pump control valve, comprising: a valve body, the outer side of the valve body is symmetrically connected with two pipelines, one of the two pipelines is an inlet, and the other is an outlet, a connecting pipe is slidably installed in each of the two pipelines, a flange is welded to the outer side of each of the two connecting pipes, one of the two flanges is connected with the coal mine pump, and the other is connected with the transportation pipeline, a sleeve is rotatably installed on the outer side of each of the two pipelines, an internal thread ring is fixedly arranged on the inner side of each of the two sleeves, an external thread ring is fixedly sleeved on the outer side of each of the two connecting pipes, and the internal thread ring is threadedly connected with the external thread ring.

[0006] Preferably, a limiting groove is formed in the inner side of the sleeve, a limiting ring is fixedly installed on the outer side of the pipeline, and the limiting ring is slidably connected with the inner wall of the limiting groove; to ensure that the sleeve can only rotate on the outer side of the pipeline.

[0007] Preferably, two sealing rings are fixedly sleeved on the outer side of the connecting pipe, the two sealing rings are sealingly and slidably connected with the inner wall of the pipeline, and double sealing improves the sealing effect between the connecting pipe and the pipeline.

[0008] Preferably, two ball grooves are symmetrically formed on the outer side of the external thread ring, two balls are inlaid on the inner wall of the pipeline, and the two balls are slidably connected with the inner walls of the two ball grooves; to ensure that the connecting pipe can only move horizontally and linearly inside the pipeline.

[0009] Preferably, the inner diameter of the pipe is larger than the outer diameter of the external thread ring; the external thread ring is prevented from contacting the inner wall of the pipe.

[0010] Preferably, the outer side of the flange is provided with a sealing strip, and the two flanges are connected and sealed.

[0011] Preferably, a threaded hole is formed in the outer side of the sleeve, and a bolt is threadedly connected in the threaded hole; the sleeve is fixed on the outer side of the pipe by the bolt; and the sleeve is fixed on the pipe.

[0012] Preferably, a trumpet mouth is welded on the inner side of the connecting pipe, and the outer circle of the trumpet mouth is in contact with the inner wall of the pipe; and the liquid in the pipe is conveniently introduced into the connecting pipe.

[0013] Compared with the prior art, the valve body can be conveniently installed on the coal mine pump, the two connecting pipes can be conveniently adjusted in length, the sealing effect between the connecting pipe and the pipe is improved, the liquid in the pipe is directly introduced into the connecting pipe through the trumpet mouth, the pressure on the sealing ring is reduced, and the sealing effect is improved.

[0014] 1、 when the valve body is installed, the left flange is first fixed with the coal mine pump, the sleeve is rotated to drive the internal thread ring to rotate, the internal thread ring is in threaded transmission with the external thread ring, the external thread ring drives the connecting pipe to move horizontally only through the sliding of the ball in the inner wall of the ball groove, until the other flange is in contact with the flange on the transportation pipe, and then the installation is completed; if the other flange does not contact the flange on the transportation pipe, the other bolt is loosened, the length of the connecting pipe is adjusted outward, and the installation is completed through the flange; the lengths of the two connecting pipes are adjusted, sufficient space is reserved between the transportation pipe and the coal mine pump for installation of the valve body, excessive compression during installation is avoided, work efficiency is improved, and labor intensity is reduced.

[0015] 2、 the two sealing rings are in sealing sliding connection with the inner wall of the pipe, double sealing is achieved, and the sealing effect between the connecting pipe and the pipe is improved.

[0016] 3、 the trumpet mouth is added to directly introduce most of the liquid into the connecting pipe, reduce the pressure on the sealing ring, and improve the sealing effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of the utility model;

[0018] Figure 2 It is a front view structural schematic diagram of the utility model; Figure 1

[0019] Figure 3 It is a structural schematic diagram of the connecting pipe, the external thread ring, the sealing ring, the flange, the trumpet mouth and related parts of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the sleeve and the internal thread ring of the utility model; ​

[0021] Figure 5 It is a structure schematic view of the pipeline and the ball of the utility model.

[0022] Among them: 1, valve body; 2, pipeline; 21, ball; 3, connecting pipe; 31, flange; 311, sealing strip; 32, horn mouth; 4, sealing ring; 5, external thread ring; 51, ball groove; 6, sleeve; 61, limiting groove; 62, limiting ring; 63, threaded hole; 7, internal thread ring; 8, bolt. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model. The experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0024] Embodiment one

[0025] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The utility model provides a kind of easily replaced coal mine pump control valve, including valve body 1, the outside symmetry of valve body 1 is connected with two pipelines 2, two pipelines 2 one is import, another is export, two pipelines 2 are slidably installed with connecting pipe 3, the outside of two connecting pipes 3 is welded with flange 31, two flanges 31 one is connected with coal mine pump, another is connected with transport pipeline, the outside of two pipelines 2 is rotatably installed with sleeve 6, the inside of two sleeves 6 is fixedly provided with internal thread ring 7, the outside of two connecting pipes 3 is set with external thread ring 5, internal thread ring 7 is connected with external thread ring 5 by screw thread, the outside of flange 31 is provided with sealing strip 311, and two flange connecting places are sealed.

[0026] As shown in Figure 2 , in the embodiment, the inside of sleeve 6 is provided with limiting groove 61, the outside of pipeline 2 is fixedly installed with limiting ring 62, limiting ring 62 is slidably connected with the inner wall of limiting groove 61;For guaranteeing that sleeve 6 can only rotate on the outside of pipeline 2.

[0027] As shown in Figure 3 , in the embodiment, the outside of connecting pipe 3 is fixedly provided with two sealing rings 4, two sealing rings 4 are slidably connected with the inner wall of pipeline 2, double-layer sealing, improve the sealing effect between connecting pipe 3 and pipeline 2.

[0028] As Figure 5 , two ball grooves 51 are symmetrically arranged on the outer side of the external thread ring 5, two balls 21 are embedded on the inner wall of the pipeline 2, and the two balls 21 are in sliding connection with the inner walls of the two ball grooves 51; for ensuring that the connecting pipe 3 can only move horizontally and linearly inside the pipeline 2.

[0029] As Figure 2 , the inner diameter of the pipeline 2 is greater than the outer diameter of the external thread ring 5; to avoid the contact between the external thread ring 5 and the inner wall of the pipeline 2.

[0030] In this embodiment, the working mode is as follows: when installing the valve body 1, first fix the left flange 31 with the coal mine pump, rotate the sleeve 6, the sleeve 6 drives the internal thread ring 7 to rotate, the internal thread ring 7 is in threaded transmission with the external thread ring 5, the balls 21 slide on the inner walls of the ball grooves 51, so that the external thread ring 5 drives the connecting pipe 3 to move horizontally only, the connecting pipe 3 drives the two sealing rings 4 to slide in the pipeline 2 and extend outward, the sealing rings 4 are arranged to keep the connecting pipe 3 and the pipeline 2 in sealed communication, until the other flange 31 contacts the flange on the transportation pipeline, and then the sleeve 6 is locked and fixed by the bolt 8, if the other flange 31 does not contact the flange on the transportation pipeline, rotate the other sleeve 6, and in the same way, continue to adjust the length of the other connecting pipe 3 outward, until the flange can be installed, by adjusting the lengths of the two connecting pipes 3, enough space can be reserved between the transportation pipeline and the coal mine pump for the installation of the valve body 1, to avoid excessive compression during installation, improve work efficiency, and reduce labor intensity, when disassembling, first release the flange fixing, and then reverse rotate the sleeve 6.

[0031] Embodiment two

[0032] This embodiment is further optimized on the basis of embodiment one, and the same parts as the foregoing technical solutions will not be described here again, as Figure 2 , Figure 4 shown, to better achieve the utility model, in particular, the following setting mode is adopted: in this embodiment, a threaded hole 63 is formed on the outer side of the sleeve 6, a bolt 8 is in threaded connection in the threaded hole 63, and the sleeve 6 is fixed on the outer side of the pipeline 2 by the bolt 8; for fixing the sleeve 6 on the position of the pipeline 2.

[0033] In this embodiment, the working mode is as follows: when the sleeve 6 needs to be installed, first loosen the bolt 8 to release the fixing between the sleeve 6 and the pipeline 2, although the sleeve 6 is connected with the external thread ring 5 in the threaded mode through the internal thread ring 7, but the stability is poor, the bolt 8 is added, and the stability between the sleeve 6 and the pipeline 2 can be improved.

[0034] Embodiment three

[0035] The embodiment is further optimized on the basis of embodiment one, and the same parts as the foregoing technical solutions will not be described here again, such as Figure 2 、 Figure 3 As shown in the figure, further, in order to better realize the utility model, in particular, the following setting mode is adopted: in the embodiment, the inner side of the connecting pipe 3 is welded with a trumpet mouth 32, the outer circle of the trumpet mouth 32 is in contact with the inner wall of the pipeline 2; it is convenient for the liquid inside the pipeline 2 to enter the inside of the connecting pipe 3.

[0036] In the embodiment, the working mode, if the trumpet mouth 32 is not set, the hydraulic pressure inside the pipeline 2 will completely act on the sealing ring 4, which affects the sealing effect between the connecting pipe 3 and the pipeline 2, and the trumpet mouth 32 can directly guide most of the liquid into the connecting pipe 3, reduce the pressure received by the sealing ring 4, and improve the sealing effect.

[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A replaceable coal mine pump control valve characterised in that: The utility model relates to a valve body (1) is connected with two pipelines (2) on the outside symmetry, one is import, the other is export, two connecting pipes (3) are slidably installed in two pipelines (2), the outer side of two connecting pipes (3) is welded with flange (31), the outer side of two pipelines (2) is rotatably installed with sleeve (6), the inner side of two sleeve (6) is fixedly provided with internal thread ring (7), the outer side of two connecting pipes (3) is equipped with external thread ring (5), and internal thread ring (7) is connected with external thread ring (5) threadedly.

2. The easily replaceable coal mine pump control valve according to claim 1, characterized in that: The inner side of the sleeve (6) is provided with a limiting groove (61), and the outer side of the pipeline (2) is fixedly provided with a limiting ring (62) in sliding connection with the inner wall of the limiting groove (61).

3. The easily replaceable coal mine pump control valve according to claim 1, characterized in that: The outer side of the connecting pipe (3) is fixedly provided with two sealing rings (4) in sealing sliding connection with the inner wall of the pipeline (2).

4. The easily replaceable coal mine pump control valve according to claim 1, characterized in that: The outer side of the external thread ring (5) is symmetrically provided with two ball grooves (51), and the inner wall of the pipeline (2) is embedded with two balls (21) in sliding connection with the inner walls of the two ball grooves (51).

5. The easily replaceable coal mine pump control valve according to claim 1, characterized in that: The inner diameter of the pipeline (2) is greater than the outer diameter of the external thread ring (5).

6. The easily replaceable coal mine pump control valve according to claim 1, characterized in that: The outer side of the flange (31) is provided with a sealing strip (311).

7. The easily replaceable coal mine pump control valve according to claim 1, characterized in that: The outer side of the sleeve (6) is provided with a threaded hole (63), and a bolt (8) is threadedly connected in the threaded hole (63) to fix the sleeve (6) on the outer side of the pipeline (2).

8. The easily replaceable coal mine pump control valve according to claim 1, characterized in that: The inner side of the connecting pipe (3) is welded with a flared mouth (32) in contact with the inner wall of the pipeline (2). ​

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