Comprehensive quality tester for main nozzle

Abstract

The utility model relates to a main nozzle comprehensive quality tester which comprises a base, a testing device is arranged outside the base, the testing device comprises an arc-shaped fixing block and a sliding rod, the arc-shaped fixing block is arranged outside the base, the sliding rod is fixedly installed in the base, and the outer surface of the sliding rod is connected with a sliding block in a sliding mode. According to the comprehensive quality tester for the main nozzle, the nozzle main body is placed on the arc-shaped groove of the base and is fixed through the bolt and the arc-shaped fixing block, the threaded rod is rotated to drive the measuring cylinder and the mounting block to move front and back, and the rotating button is rotated to drive the bevel gear rod to rotate, so that the threaded conical rod is driven to rotate; the lifting column is controlled to move up and down in the second supporting sleeve, the Pitot tube and the yarn guide tube are in the same horizontal state, then the nozzle body is started to be tested through the Pitot tube, the air flow outlet pressure attenuation value is obtained, and therefore the purpose of testing the outlet pressure of the main nozzle at different distances is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air jet looms, in particular to a main nozzle comprehensive quality tester. Background Art

[0002] The main nozzle is the main device in the air jet loom that injects air jets to introduce the weft yarn into the shed. It is usually installed at the shed entrance on the left side of the loom. The jet it generates starts the weft yarn from a stationary state and quickly flies into the shed after leaving the fixed-length weft accumulator. It is the main source of the weft yarn's flying power.

[0003] Before the main nozzle is installed in the paint spraying loom, it needs to be subjected to a comprehensive quality test, such as the performance, flow rate, uniformity and other key indicators of the main nozzle. However, the existing tester cannot test the air outlet pressure at different distances of the main nozzle, resulting in inaccurate data and practicality that needs to be improved. Therefore, a main nozzle comprehensive quality tester is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a main nozzle comprehensive quality tester, which has the advantages of testing the outlet pressure at different distances from the main nozzle, etc., and solves the problem that the practicality of the existing testing device needs to be improved.

[0005] To achieve the above object, the utility model provides the following technical solution: a main nozzle comprehensive quality tester, comprising a base, the top of the base is movably connected with a nozzle body, a yarn guide tube is arranged inside the nozzle body, and a testing device is arranged outside the base;

[0006] The testing device includes an arc-shaped fixed block, a sliding rod, a slider, a support plate, a bevel gear rod, a threaded tapered rod, a threaded rod, a measuring cylinder, a mounting block and a Pitot tube. An arc-shaped fixed block is arranged on the outside of the base, a sliding rod is fixedly installed on the inside of the base, a sliding rod is slidably connected to the outer surface of the sliding rod, a supporting plate is fixedly installed on the bottom of the slider, a bevel gear rod is arranged on the outside of the support plate, a threaded tapered rod is rotatably connected to the top of the support plate, a threaded rod is arranged on the outside of the base, a measuring cylinder is rotatably connected to the back of the threaded rod, a mounting block is fixedly installed on the back of the measuring cylinder, and a Pitot tube is fixedly installed on the inside of the mounting block.

[0007] Furthermore, a limit rod is fixedly installed on the top of the base, the outer surface of the limit rod is slidably connected to the inside of the arc-shaped fixed block, the internal thread of the arc-shaped fixed block is connected with a bolt, and the interior of the base is provided with a threaded hole adapted to the bolt, the top of the sliding rod is fixedly installed with a limit block, and the interior of the slider is slidably connected to the outer surface of the sliding rod and the outer surface of the limit block.

[0008] Furthermore, a first support sleeve is fixedly installed at the bottom of the support plate. The front and rear sides of the bevel gear rod are rotatably connected to the inside of the first support sleeve. A rotary knob is fixedly installed on the front surface of the bevel gear rod. The front surface of the bevel gear rod penetrates through the inner front wall of the first support sleeve and is fixedly connected to the rear surface of the rotating shaft. A plug rod is movably connected to the inside of the first support sleeve.

[0009] Furthermore, a second support sleeve is fixedly installed at the top of the support plate. The bottom of the threaded taper rod penetrates through the top of the support plate and meshes with the outer surface of the bevel gear rod. A lifting column is threadedly connected to the outer surface of the threaded taper rod. The outer surface of the lifting column is slidably connected to the inside of the second support sleeve.

[0010] Furthermore, a top block is fixedly installed at the top of the lifting column. A third support sleeve is fixedly installed inside the top block. The front surface of the third support sleeve is rotatably connected to the rear surface of the threaded rod. The outer surface of the measuring cylinder is movably connected to the inside of the third support sleeve. The rear surface of the threaded rod penetrates through the front surface of the third support sleeve and is rotatably connected to the front surface of the measuring cylinder.

[0011] Furthermore, measuring scales are provided on the outer surfaces of both the measuring cylinder and the sliding rod. An arc-shaped groove adapted to the nozzle body is formed at the top of the base. A rubber block is fixedly installed inside the arc-shaped fixing block.

[0012] Beneficial Effects

[0013] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0014] For this main nozzle comprehensive quality tester, place the nozzle body on the arc-shaped groove of the base, then fix the nozzle body through bolts and the arc-shaped fixing block. Then adjust the position of the mounting block according to the yarn guide tube. Rotate the threaded rod to drive the measuring cylinder and the mounting block to adjust the front and rear positions. Then rotate the rotary knob to drive the bevel gear rod to rotate, thereby driving the threaded taper rod to rotate through the bevel gear rod, so as to control the up and down movement of the lifting column in the second support sleeve, thereby driving the mounting block to move up and down and fixing the bevel gear rod through the plug rod. Make the pitot tube and the yarn guide tube in the same horizontal state by driving the mounting block. Then adjust the distance from the slider to the yarn guide tube. Then start the nozzle body. The airflow generated by the nozzle body will be tested through the pitot tube. By controlling the distance between the moving slider and the yarn guide tube, the air outlet pressure attenuation value is obtained, so as to achieve the purpose of testing the air outlet pressure at different distances of the main nozzle. Brief Description of the Drawings

[0015] Figure 1 It is a front structural schematic diagram of the present utility model;

[0016] Figure 2This is a schematic diagram of a partially sectional structure on the right side of the test device of the present utility model;

[0017] Figure 3 This is a schematic diagram of the partial right-side structure of the present utility model.

[0018] In the figure: 1, base; 2, nozzle body; 3, yarn guide tube; 4, test device; 401, arc-shaped fixing block; 402, slide bar; 403, slider; 404, support plate; 405, bevel gear rod; 406, threaded bevel rod; 407, threaded rod; 408, measuring cylinder; 409, mounting block; 410, Pitot tube. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1 - 3 , the main nozzle comprehensive quality tester, including a base 1, the top of the base 1 is movably connected with a nozzle body 2, a yarn guide tube 3 is arranged inside the nozzle body 2, and a test device 4 is arranged outside the base 1;

[0021] The test device 4 includes an arc-shaped fixing block 401, a slide bar 402, a slider 403, a support plate 404, a bevel gear rod 405, a threaded bevel rod 406, a threaded rod 407, a measuring cylinder 408, a mounting block 409 and a Pitot tube 410. An arc-shaped fixing block 401 is arranged outside the base 1, a slide bar 402 is fixedly installed inside the base 1, the outer surface of the slide bar 402 is slidably connected with a slider 403, a support plate 404 is fixedly installed at the bottom of the slider 403, a bevel gear rod 405 is arranged outside the support plate 404, a threaded bevel rod 406 is rotatably connected to the top of the support plate 404, a threaded rod 407 is arranged outside the base 1, the back of the threaded rod 407 is rotatably connected with a measuring cylinder 408, a mounting block 409 is fixedly installed at the back of the measuring cylinder 408, and a Pitot tube 410 is fixedly installed inside the mounting block 409.

[0022] Specifically, as Figure 2 shown, the Pitot tube 410, also known as a Pitot tube or a velocity measuring tube, commonly known as a wind speed tube, is an instrument used to measure the difference between the total pressure and the static pressure of a fluid to calculate the flow velocity. The instrument consists of two hollow thin tubes, one is the total pressure tube and the other is the pressure measuring tube. By connecting the rubber tubes of the two thin tubes to the two glass tubes of the differential pressure gauge, the height difference between the liquid levels of the two tubes can be measured, and then the flow velocity can be calculated according to Bernoulli's equation.

[0023] Specifically, as Figure 1 shown, after the nozzle body 2 is placed in the arc-shaped groove of the base 1, press the arc-shaped fixing block 401 to move it downward along the limiting rod, and make the rubber block fit with the nozzle body 2. Then fix the nozzle body 2 on the base 1 through bolts and the arc-shaped fixing block 401 to prevent it from moving during the test, which may lead to inaccurate test data.

[0024] Specifically, as Figure 3 shown, the material of the rubber block is natural rubber, which is an important rubber material mainly derived from the sap of rubber trees. Natural rubber has good physical and mechanical properties and high elasticity. By setting the rubber block of this material, the friction with the nozzle body 2 is increased, thus assisting in fixing the nozzle body 2. At the same time, due to the elasticity of the material, the outer surface of the nozzle body 2 will not be damaged.

[0025] During implementation, the operations are carried out in the following steps:

[0026] 1) First, place the nozzle body 2 in the arc-shaped groove of the base 1 and fix it through the arc-shaped fixing block 401 and bolts;

[0027] 2) Then rotate the bevel gear rod 405 to drive the threaded bevel rod 406 to rotate, thereby controlling the lifting column to move up and down in the second support sleeve. After adjusting to the appropriate height, fix it with the insertion rod;

[0028] 3) Then rotate the threaded rod 407 to drive the measuring cylinder 408 and the mounting block 409 to move, so that the pitot tube 410 and the yarn guide tube 3 are in a horizontal state;

[0029] 4) Finally, open the nozzle body 2 and continuously move the slider 403 to cooperate with the pitot tube 410 to obtain the air outlet pressure decay value of the air flow.

[0030] In summary, for this comprehensive quality tester of the main nozzle, place the nozzle body 2 on the arc-shaped groove of the base 1, and then fix the nozzle body 2 through bolts in cooperation with the arc-shaped fixing block 401. Then, adjust the position of the mounting block 409 according to the yarn guide tube 3. Drive the measuring cylinder 408 and the mounting block 409 to adjust their front and rear positions by rotating the threaded rod 407. Then, drive the bevel gear rod 405 to rotate by turning the knob, so as to drive the threaded bevel rod 406 to rotate through the bevel gear rod 405, thereby controlling the up and down movement of the lifting column in the second support sleeve, driving the mounting block 409 to move up and down and fixing the bevel gear rod 405 through the insertion rod. Make the Pitot tube 410 and the yarn guide tube 3 in the same horizontal state by driving the mounting block 409. Then, adjust the distance from the yarn guide tube 3 by moving the slider 403. Then, start the nozzle body 2. The airflow generated by the nozzle body 2 will be tested through the Pitot tube 410. By controlling the distance between the moving slider 403 and the yarn guide tube 3, the air outlet pressure attenuation value is obtained, so as to achieve the purpose of testing the air outlet pressure at different distances of the main nozzle.

[0031] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A main nozzle comprehensive quality tester, comprising a base (1), characterized in that: The top of the base (1) is movably connected to a nozzle body (2), a yarn guide tube (3) is arranged inside the nozzle body (2), and a testing device (4) is arranged outside the base (1); The testing device (4) comprises an arc-shaped fixed block (401), a sliding rod (402), a slider (403), a support plate (404), a bevel gear rod (405), a threaded tapered rod (406), a threaded rod (407), a measuring tube (408), a mounting block (409) and a Pitot tube (410). The base (1) is provided with an arc-shaped fixed block (401) on the outside, the sliding rod (402) is fixedly mounted on the inside of the base (1), the outer surface of the sliding rod (402) is slidably connected to the slider (403), and the sliding rod (403) is connected to the outer surface of the sliding rod (402). A support plate (404) is fixedly installed at the bottom of the block (403), a bevel gear rod (405) is arranged outside the support plate (404), a threaded conical rod (406) is rotatably connected to the top of the support plate (404), a threaded rod (407) is arranged outside the base (1), a measuring tube (408) is rotatably connected to the back of the threaded rod (407), a mounting block (409) is fixedly installed on the back of the measuring tube (408), and a pitot tube (410) is fixedly installed inside the mounting block (409).

2. The main nozzle comprehensive quality tester according to claim 1, characterized in that: A limit rod is fixedly installed on the top of the base (1), the outer surface of the limit rod is slidably connected to the inside of the arc-shaped fixed block (401), the inside of the arc-shaped fixed block (401) is threadedly connected with a bolt, and a threaded hole matching the bolt is provided inside the base (1), the limit block is fixedly installed on the top of the sliding rod (402), and the inside of the sliding block (403) is slidably connected to the outer surface of the sliding rod (402) and the outer surface of the limit block.

3. The main nozzle comprehensive quality tester according to claim 1, characterized in that: A first support sleeve is fixedly installed at the bottom of the support plate (404), and the interior of the first support sleeve is rotatably connected to the front and rear sides of the bevel gear rod (405). A rotating knob is fixedly installed on the front side of the bevel gear rod (405). The front side of the bevel gear rod (405) passes through the inner front wall of the first support sleeve and is fixedly connected to the back side of the rotating shaft. The interior of the first support sleeve is movably connected to an insertion rod.

4. The main nozzle comprehensive quality tester according to claim 1, characterized in that: A second support sleeve is fixedly installed on the top of the support plate (404); the bottom of the threaded cone rod (406) passes through the top of the support plate (404) and meshes with the outer surface of the bevel gear rod (405); a lifting column is threadedly connected to the outer surface of the threaded cone rod (406); and the outer surface of the lifting column is slidably connected to the inside of the second support sleeve.

5. The main nozzle comprehensive quality tester according to claim 4 is characterized in that: A top block is fixedly installed on the top of the lifting column, and a third support sleeve is fixedly installed inside the top block. The front side of the third support sleeve is rotatably connected to the back side of the threaded rod (407), and the outer surface of the measuring cylinder (408) is movably connected to the inside of the third support sleeve. The back side of the threaded rod (407) passes through the front side of the third support sleeve and is rotatably connected to the front side of the measuring cylinder (408).

6. The main nozzle comprehensive quality tester according to claim 1, characterized in that: The outer surface of the measuring cylinder (408) and the outer surface of the sliding rod (402) are both provided with measuring rulers, the top of the base (1) is provided with an arc groove adapted to the nozzle body (2), and a rubber block is fixedly installed inside the arc-shaped fixing block (401).

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