阅读说明：本技术 一种流量测量仪器 (Flow measuring instrument ) 是由 陈雪莲 于 2020-07-25 设计创作，主要内容包括：本发明公开了一种流量测量仪器,其结构包括连通管、压力阀、防护管、仪表盘,连通管通过焊接安装在防护管的正下方,压力阀镶嵌安装在连通管的外侧右端面,防护管位于压力阀的正上方,仪表盘嵌固安装在防护管的上端左侧面,连通管包括螺纹杆、管壁、换向轴、滑轨、测量机构,螺纹杆镶嵌卡合连接着换向轴,管壁内侧端面镶嵌安装着滑轨,换向轴位于换向轴的右侧方,滑轨镶嵌贴合在测量机构的外侧端面,活动卡合连接着换向轴的右侧端,保证在水流流量较小的情况下,利用螺纹条的条状外轮廓所获得的较小阻力使计算结果更趋于真实,避免因叶片的外轮廓与质量所造成的计算失误问题。(The invention discloses a flow measuring instrument, which structurally comprises a communicating pipe, a pressure valve, a protective pipe and an instrument panel, wherein the communicating pipe is installed under the protective pipe in a welding mode, the pressure valve is installed on the right end face of the outer side of the communicating pipe in an embedding mode, the protective pipe is located right above the pressure valve, the instrument panel is installed on the left side face of the upper end of the protective pipe in an embedding mode, the communicating pipe comprises a threaded rod, a pipe wall, a reversing shaft, a sliding rail and a measuring mechanism, the threaded rod is connected with the reversing shaft in an embedding and clamping mode, the sliding rail is installed on the inner side end face of the pipe wall in an embedding mode, the reversing shaft is located on the right side of the reversing shaft, the sliding rail is attached to the end face of the, the calculation result is more real by using the smaller resistance obtained by the strip-shaped outer contour of the thread strip, and the problem of calculation error caused by the outer contour and the quality of the blade is avoided.)

1. A flow measuring instrument structurally comprises a communicating pipe (1), a pressure valve (2), a protective pipe (3) and an instrument panel (4), wherein the communicating pipe (1) is installed under the protective pipe (3) in a welding mode, the pressure valve (2) is installed on the right end face of the outer side of the communicating pipe (1) in an embedding mode, the protective pipe (3) is located right above the pressure valve (2), and the instrument panel (4) is installed on the left side face of the upper end of the protective pipe (3) in an embedding mode; the method is characterized in that:

communicating pipe (1) includes threaded rod (11), pipe wall (12), reversing shaft (13), slide rail (14), measuring mechanism (15), reversing shaft (13) are being connected to the block is inlayed in threaded rod (11), slide rail (14) are being inlayed and are being installed to pipe wall (12) medial surface, reversing shaft (13) are located the right side of threaded rod (11), the laminating is inlayed at the outside terminal surface of measuring mechanism (15) in slide rail (14), the right side end of reversing shaft (13) is being connected in measuring mechanism (15) activity block.

2. A flow measuring instrument according to claim 1, wherein the measuring mechanism (15) includes an impeller (151), a spiral stripe (152), a support rod (153), and an embedding shaft (154), the impeller (151) is movably clamped and installed on a left end face of the measuring mechanism (15), the spiral stripe (152) is horizontally wrapped on an outer end face of the embedding shaft (154), the support rod (153) is embedded and connected with an inner end face of the spiral stripe (152), and the embedding shaft (154) is located at a horizontal center of the impeller (151).

3. The flow measuring instrument according to claim 2, wherein the spiral stripe (152) comprises a second slide rail (521), a ball (522), a shifting plate (523) and an embedding groove (524), the second slide rail (521) is embedded and fixedly installed on the outer end face of the spiral stripe (152), the ball (522) is movably attached to the inner end face of the second slide rail (521), the shifting plate (523) is uniformly distributed on the inner end face of the spiral stripe (152), and the embedding groove (524) is installed on the inner end face of the spiral stripe (152) by welding.

4. The flow measuring instrument according to claim 3, wherein the ball (522) comprises pulleys (221), a fixed rod (222), anti-slip threads (223) and a rotating shaft (224), the pulleys (221) are symmetrically arranged on the left side and the right side of the anti-slip threads (223), the fixed rod (222) is movably clamped on the left side and the right side of the ball (522), the anti-slip threads (223) are uniformly distributed on the outer side end face of the ball (522), and the rotating shaft (224) is movably clamped on the connecting end face of the pulley (221) and the fixed rod (222).

5. A flow measuring instrument according to claim 1, wherein the reversing shaft (13) includes a connecting block (131), a rotating block (132), and a connecting rod (133), the connecting block (131) is movably connected to the inner end surface of the reversing shaft (13) in a snap-fit manner, the connecting rod (133) is fixedly installed on the right end surface of the rotating block (132), the connecting rod (133) is installed on the left end surface of the measuring mechanism (15) through a welded connection, and the connecting block (131) is installed on the left end surface of the measuring mechanism.

6. A flow measuring instrument according to claim 5, wherein the rotating block (132) comprises an insert (321), a fixing rod (322), a removing blade (323) and a flow groove (324), the insert (321) is fixedly mounted on the upper end face of the fixing rod (322), the removing blade (323) is uniformly wrapped on the outer end face of the fixing rod (322), the removing blade (323) is positioned right above the flow groove (324), and the flow groove (324) is mounted on the outer side face of the lower end of the rotating block (132).

7. A flow measuring instrument according to claim 6, wherein the removing blade (323) includes a rubber layer (231), an adsorption layer (232), and a fitting groove (233), the rubber layer (231) is previously attached to the left end surface of the removing blade (323), the adsorption layer (232) is fixedly fitted to the outer surface of the upper end of the removing blade (323), and the fitting groove (233) is fixedly fitted to the right end surface of the removing blade (323) and connected to the fixing rod (322).

Technical Field

The invention belongs to the field of instruments and meters, and particularly relates to a flow measuring instrument.

Background

The flow measuring instrument is installed on a water pipe by matching a detecting instrument with an impeller, calculates the actual flow of water flow by matching the rotating speed of water flow with the actual size of a pipeline and is mainly applied to water supply plants, district concentrated water towers and the like.

Based on the findings of the inventor, the following defects mainly exist in the prior art, such as: because the calculation of flow relies on the cooperation of impeller and pipe wall very much, and the outer contour design of the circular arc tangent plane that inclines slightly is generally adopted in the design of impeller blade, when rivers flow is less, because the frictional force that the gravity resistance of impeller blade self and pivot rust produced will lead to less discharge to be difficult to directly drive the impeller rotation, but regard the blade as the buffering point and scatter to the left and right sides, make the actual flow of detecting instrument at the region that the velocity of flow is gentler and be difficult to directly perceived and accurate detection rivers.

It is therefore desirable to provide a flow measuring instrument.

Disclosure of Invention

The flow calculation method aims to solve the problem that in the prior art, because the flow calculation depends on the matching of the impeller and the pipe wall, and the impeller blades are designed by adopting the outer contour design of a slightly inclined arc section, when the flow of water is small, the small water flow cannot directly drive the impeller to rotate due to the gravity resistance of the impeller blades and the friction force generated by rusting of the rotating shaft, but the blades are used as buffer points to scatter towards the left side and the right side, so that a detection instrument cannot visually and accurately detect the actual flow of the water flow in a region with slow flow speed.

The purpose and the effect of the flow measuring instrument are achieved by the following specific technical means: the structure of the device comprises a communicating pipe, a pressure valve, a protection pipe and an instrument panel, wherein the communicating pipe is installed under the protection pipe in a welding mode, the pressure valve is installed on the right end face of the outer side of the communicating pipe in an embedded mode, the protection pipe is located right above the pressure valve, and the instrument panel is installed on the left side face of the upper end of the protection pipe in an embedded mode; the communicating pipe comprises a threaded rod, a pipe wall, a reversing shaft, a sliding rail and a measuring mechanism, the threaded rod is embedded and clamped to be connected with the reversing shaft, the sliding rail is embedded and installed on the end face of the inner side of the pipe wall, the reversing shaft is located on the right side of the threaded rod, the sliding rail is embedded and attached to the end face of the outer side of the measuring mechanism, and the measuring mechanism is movably clamped to be connected with the end of the right side of the reversing shaft.

Wherein, measuring mechanism includes impeller, spiral shell stripe, bracing piece, inlays solid axle, impeller activity block is installed at measuring mechanism's left side terminal surface, spiral shell stripe level parcel is at the outside terminal surface of inlaying solid axle, the medial surface of connecting spiral shell stripe is inlayed to the bracing piece, it is located the positive center of level of impeller to inlay solid axle, spiral shell stripe is equipped with two and is the screw thread form parcel.

The spiral stripe comprises a second sliding rail, a ball, a shifting plate and an embedding groove, the second sliding rail is fixedly embedded in the outer side end face of the spiral stripe, the ball is movably attached to the inner side end face of the second sliding rail, the shifting plate is uniformly distributed on the inner side end face of the spiral stripe, the embedding groove is installed on the inner side end face of the spiral stripe through welding, the shifting plate is provided with an inclination angle, and the inclination angle is consistent with the rotation direction of the second sliding rail.

The ball comprises a pulley, a fixed rod, anti-slip lines and a rotating shaft, the pulley is symmetrically arranged on the left side and the right side of the anti-slip lines, the fixed rod is movably clamped and arranged on the left side and the right side of the ball, the anti-slip lines are uniformly distributed on the end faces of the outer sides of the ball, the rotating shaft is movably clamped and arranged on the connecting end faces of the pulley and the fixed rod, and the diameter of the pulley is slightly smaller than the depth of the second sliding rail.

The reversing shaft comprises a connecting block, a rotating block and a connecting rod, the connecting block is movably clamped on the inner side end face of the reversing shaft, the connecting rod is fixedly installed on the right side end face of the rotating block in an embedded mode, the connecting rod is installed on the left side end face of the measuring mechanism through welding connection, and a groove with the thickness being consistent with the diameter of the inner end face of the left side of the rotating block is formed in the left side end face of the connecting block.

Wherein, the turning block includes mosaic block, dead lever, clears away blade, flow groove, the mosaic block is inlayed the face of installing at the dead lever, dead lever outside terminal surface is evenly wrapping up and is clearing away the blade, it is located the flow groove directly over to clear away the blade, the lower extreme lateral surface at the turning block is inlayed and is installed to the flow groove, the flow groove is the water droplet form outline.

The blade is clear away including rubber layer, adsorbed layer, inlay the groove, the left side terminal surface of blade is being clear away in the laminating earlier on the rubber layer, the adsorbed layer inlays solid the installation and is being clear away the upper end surface of blade, inlay the groove and inlay the connection and be connected at the blade right side terminal surface of clearing away and with the dead lever, the length on rubber layer is longer than the distance between dead lever and the connecting block slightly.

Compared with the prior art, the invention has the following beneficial effects:

1. the method ensures that the calculation result is more real by using the small resistance obtained by the strip-shaped outer contour of the thread strip under the condition of small water flow, and avoids the problem of calculation error caused by the outer contour and the quality of the blade.

2. When cleaing away the blade and strike off water stain, its inside rubber layer is owing to keeping interference fit between with the connecting block, can make it can be effectual when rotatory clear away to the steering shaft more intact with water stain outside, avoid whole equipment because the steering shaft is soaked by water stain and rusts and lead to the frictional force increase of connecting the terminal surface, and the impeller that leads to the fact is difficult to rotate to influence the calculation error of system in the panel board.

Drawings

Fig. 1 is a schematic view of the overall structure of a flow meter according to the present invention.

Fig. 2 is a schematic structural diagram of a communicating tube of a flow measuring instrument according to the present invention.

Fig. 3 is a schematic structural diagram of a measuring mechanism of a flow measuring instrument according to the present invention.

FIG. 4 is a schematic structural diagram of a spiral strip of a flowmeter of the present invention.

FIG. 5 is a schematic view of a ball of a flowmeter of the present invention.

FIG. 6 is a schematic view of the construction of a flow measuring instrument reversing shaft according to the present invention.

FIG. 7 is a schematic view of a rotating block of a flowmeter of the present invention.

FIG. 8 is a schematic view of a clean out blade of a flowmeter of the present invention.

In the figure: the device comprises a communicating pipe-1, a pressure valve-2, a protective pipe-3, an instrument panel-4, a threaded rod-11, a pipe wall-12, a reversing shaft-13, a sliding rail-14, a measuring mechanism-15, an impeller-151, a spiral stripe-152, a supporting rod-153, a second sliding rail-521, a ball-522, a shifting plate-523, a fixing groove-524, a pulley-221, a fixed rod-222, an anti-slip stripe-223, a rotating shaft-224, a connecting block-131, a rotating block-132, a connecting rod-133, an embedding block-321, a fixed rod-322, a removing blade-323, a flowing groove-324, a rubber layer-231, an adsorption layer-232 and an embedding groove-233.

Detailed Description

The invention is further described below with reference to the accompanying drawings: