Jet flow pressure detection device for nozzle of water-jet loom and operation method of jet flow pressure detection device

Abstract

The invention relates to the technical field of nozzle detection, and discloses a jet pressure detection device for a nozzle of a water-jet loom and an operation method thereof.The jet pressure detection device for the nozzle of the water-jet loom comprises a detection table and a water pump, a support is installed on the detection table, a connecting pipe is arranged on the support, and the water inlet end of the connecting pipe is communicated with the water outlet end of the water pump; a fixed sleeve is arranged on the support, one end of the fixed sleeve is communicated with the water outlet end of the to-be-detected nozzle, a movable sleeve is arranged on the fixed sleeve, a detection hole is formed in the end of the movable sleeve, a connecting plate is installed at the bottom of the movable sleeve, a pair of first transverse rods is arranged on the side of the connecting plate, and the first transverse rods are slidably connected with the support in an inserted mode. The first transverse rod is sleeved with a tension spring, and the other end of the tension spring is connected with the support. Nozzles with qualified jet pressure fall into a good product box along the rotating plate, nozzles with unqualified jet pressure fall into a defective product box along the rotating plate, manual naked eye observation is not needed, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] This invention relates to the field of nozzle testing technology, specifically to a device for detecting the jet pressure of a water jet loom nozzle and its operating method. Background Technology

[0002] Loom nozzles utilize their high-speed jets to transport and position the weft yarns. A loom nozzle with stable jet pressure can ensure fabric quality. If the jet pressure of the loom nozzle is unstable, the weft yarn flight speed will fluctuate, easily leading to defects such as weft shrinkage, weft breakage, and uneven weft yarn spacing, directly affecting the appearance and strength of the fabric. Therefore, loom nozzles must undergo jet pressure testing at the factory. Loom nozzles with stable jet pressure spray water in a concentrated and uniform manner, while if the jet pressure of the loom nozzle is unstable, the water sprayed from the nozzle will often be uneven and dispersed.

[0003] In existing technologies, the jet pressure testing of water jet loom nozzles relies on manual observation of the water flow concentration. However, due to the high flow velocity of the water jet from the nozzles, the brief dispersion of the water flow is difficult to observe visually, leading to defective nozzles being mistaken for good ones, resulting in low testing accuracy. Therefore, we propose a water jet loom nozzle jet pressure testing device and its operation method. Summary of the Invention

[0004] This invention provides a device for detecting the jet pressure of a water-jet loom nozzle and its operating method. This device and its operating method can solve the problem mentioned in the background art that when the existing technology is used to detect the jet pressure of a loom nozzle, the degree of water flow concentration is observed manually by the naked eye. However, the water flow velocity of the water jet from the loom nozzle is high, and the temporary dispersion phenomenon of the water flow is not easily observed by the naked eye. This leads to defective loom nozzles being identified as good products, resulting in low detection accuracy.

[0005] To achieve the above objectives, this solution provides a water jet loom nozzle jet pressure detection device, including a detection platform and a water pump. A bracket is installed on the detection platform, and a connecting pipe is provided on the bracket. The water inlet end of the connecting pipe is connected to the water outlet end of the water pump, and the water outlet end of the connecting pipe is connected to the water inlet end of the nozzle to be tested. The bracket is provided with a fixed sleeve, one end of which is connected to the water outlet of the nozzle to be tested. The fixed sleeve is provided with a movable sleeve, the end of which is provided with a detection hole. A connecting plate is installed at the bottom of the movable sleeve. A pair of No. 1 crossbars are provided on the side of the connecting plate. The No. 1 crossbars are slidably inserted into the bracket. A tension spring is sleeved on the No. 1 crossbars, and the other end of the tension spring is connected to the bracket.

[0006] Optionally, a second crossbar is installed on each side of the connecting pipe. The second crossbar is slidably inserted into the bracket. A compression spring is sleeved on the second crossbar. The other end of the compression spring is connected to the bracket. A threaded rod is rotatably installed on one end of the connecting pipe. A handle is provided on the other end of the threaded rod. The threaded rod is threadedly connected to the bracket.

[0007] Optionally, the water outlet end of the connecting pipe is provided with an installation sleeve, the installation sleeve is provided with a first sealing gasket, and the fixed sleeve is provided with a second sealing gasket at the end near the nozzle.

[0008] Optionally, the testing platform is provided with a support, a rotating shaft is rotatably mounted on the support, a torsion spring is provided inside the support, one end of the torsion spring is connected to the support, the other end of the torsion spring is connected to the rotating shaft, and a rotating plate is provided on the rotating shaft, the rotating plate being located directly below the nozzle to be tested.

[0009] Optionally, a good product box and a defective product box are respectively provided on both sides of the testing platform, and a baffle is provided on the edge of the rotating plate.

[0010] Optionally, a limiting ring is installed on the side of the connecting plate near the rotating shaft. The limiting ring has a limiting groove and a release groove, which are connected. A limiting rod is slidably arranged in the limiting groove, and the limiting rod is fixedly connected to the rotating shaft.

[0011] Optionally, a guide plate is provided at the bottom of the connecting pipe, and a reset rod for contacting the guide plate is installed on the rotating shaft.

[0012] Optionally, the bottom of the movable sleeve is provided with a drainage groove, and a sealing plate for sealing the drainage groove is hinged to the bottom of the movable sleeve. A third sealing gasket is provided on the sealing plate near the movable sleeve.

[0013] Optionally, a first magnet is provided at the end of the sealing plate, and a second magnet is provided at the bottom of the movable sleeve for engaging with the first magnet.

[0014] According to a second aspect of this solution, an operation method for detecting the jet pressure of a water jet loom nozzle is provided, including the water jet loom nozzle jet pressure detection device as described above, comprising the following steps: S1. Preparation before testing: Clean the oil and burrs from the surface of the nozzle to be tested, and install the inlet and outlet pipes of the water pump. S2. Nozzle Jet Pressure Test: Fix the nozzle to be tested at the test position and determine the water flow concentration of the nozzle. If the water flow is concentrated, the jet pressure is considered qualified; if the water flow is diffused, the jet pressure is considered unqualified. The tested nozzles are divided into good and defective products. The specific process is as follows: a1: Set a movable sleeve on the water flow path of the nozzle to be tested so that the axis of the nozzle to be tested coincides with the axis of the detection hole; a2: Turn on the water pump. If the water flow from the nozzle under test gathers and passes through the test hole while the movable sleeve remains stationary, the jet pressure of the nozzle under test is considered to be qualified. If the water flow from the nozzle under test diverges and impacts the movable sleeve, causing the movable sleeve to move, the jet pressure of the nozzle under test is considered to be unqualified. a3: Nozzles with qualified jet pressure fall into the good product box along the rotating plate. If the jet pressure of the nozzle is not qualified, the rotating plate tilts towards the defective product box, and the nozzle with unqualified jet pressure falls into the defective product box along the rotating plate. S3. Post-inspection processing: Remove moisture from the inside and outside of good nozzles. Send defective nozzles to the repair station to check for impurities clogging the inside of the defective nozzles and for deformation of the nozzle orifice. Clean nozzles with impurities clogging them with a high-pressure air gun. For nozzles with deformed nozzle orifices, perform secondary grinding. The repaired nozzles are re-inspected according to the first and second steps. Only those that pass the re-inspection can be returned to the good product area. If the re-inspection still fails to meet the standards, they are deemed scrapped.

[0015] Through the above technical solution, the water jet pressure detection device and its operation method for water jet looms provided by this solution are as follows: if the water flow from the nozzle to be tested gathers and passes through the detection hole, and the movable sleeve remains stationary, it indicates that the jet pressure of the nozzle to be tested is qualified. After the nozzle is tested, it falls into the good product box along the inclined rotating plate. If the water flow from the nozzle to be tested is dispersed, the water flow sprayed from the nozzle to be tested will impact the movable sleeve, causing the inner side of the movable sleeve to be stressed. The movable sleeve drives the limiting ring to move away from the support through the connecting plate. The limiting rod moves to the connection end of the limiting groove and the release groove. The limiting rod loses the limitation of the limiting groove, the torsion spring is released, and the rotating shaft drives the rotating plate to deflect towards the defective product box. When unloading, the unqualified nozzles fall into the defective product box along the inclined rotating plate, thereby realizing the automatic judgment and classification of the jet pressure of the loom nozzles. It does not require manual visual observation and improves the accuracy of the test results. If the loom nozzle is defective, the water pressure inside the movable sleeve will increase, causing the No. 1 and No. 2 magnet blocks to separate, the sealing plate to deflect, and the drainage groove to open, thus draining the water inside the movable sleeve and preventing the water inside the movable sleeve from affecting the test, ensuring the accuracy of the test results.

[0016] Other features and advantages of this solution will be described in detail in the following detailed implementation section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the installation structure of the connecting pipe and the movable sleeve of the present invention.

[0019] Figure 3 This is an exploded structural diagram of the fixed sleeve and the movable sleeve of the present invention.

[0020] Figure 4 This is a schematic diagram of the installation structure of the rotating plate of the present invention.

[0021] Figure 5 This is a cross-sectional structural diagram of the movable sleeve of the present invention.

[0022] Figure 6 Appendix to this invention Figure 5 A magnified structural diagram of point A in the middle.

[0023] Figure 7 This is a schematic diagram of the drainage trough of the present invention during drainage.

[0024] Figure 8 This is a schematic diagram of the limiting ring of the present invention.

[0025] Figure 9 Appendix to this invention Figure 8 A magnified structural diagram at point B in the middle.

[0026] Figure 10 This is a schematic diagram of the installation structure of the guide plate of the present invention.

[0027] Figure 11 This is a schematic diagram showing the position change of the rotating plate during the unloading of defective products according to the present invention.

[0028] Figure 12 This is a schematic diagram of the structure of the rotating plate resetting after the defective product is unloaded according to the present invention.

[0029] Explanation of reference numerals in the attached drawings: 101, water pump; 102, testing table; 103, bracket; 104, good product box; 105, defective product box; 201, connecting pipe; 202, mounting sleeve; 203, threaded rod; 204, handle; 205, second crossbar; 206, compression spring; 207, guide plate; 208, first sealing gasket; 301, fixing sleeve; 302, movable sleeve; 303, testing hole; 304, connecting plate; 30 5. Limiting ring; 306. Tension spring; 307. First crossbar; 308. Sealing plate; 309. First magnet block; 310. Second magnet block; 311. Drainage groove; 312. Second sealing gasket; 313. Third sealing gasket; 315. Limiting groove; 316. Release groove; 401. Rotating plate; 402. Baffle; 403. Support; 404. Rotating shaft; 405. Torsion spring; 406. Limiting rod; 407. Reset rod. Detailed Implementation

[0030] To make the aforementioned objectives, features, and advantages of this solution more apparent and understandable, the specific embodiments of this solution are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this solution. However, this solution can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this solution. Therefore, this solution is not limited to the specific embodiments disclosed below.

[0031] In the description of this solution, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this solution and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this solution. The terms "first" and "second" are used to distinguish one element from another and do not have sequential or importance. Furthermore, in the following description, when referring to the accompanying drawings, the same reference numerals in different drawings indicate the same or similar elements, which will not be repeated here.

[0032] In this solution, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this solution based on the specific circumstances.

[0033] According to some embodiments of this solution, a device for detecting the jet pressure of a water jet loom nozzle is provided, for reference. Figures 1 to 12As shown, the water jet loom nozzle jet pressure testing device includes a testing platform 102. A water pump 101 is installed at the bottom of the testing platform 102. The inlet of the water pump 101 is connected to the bottom of the water tank via a pipe. A bracket 103 is installed on the testing platform 102. A connecting pipe 201 is installed on the bracket 103. The inlet of the connecting pipe 201 is connected to the outlet of the water pump 101, and the outlet of the connecting pipe 201 is connected to the inlet of the nozzle to be tested. A fixing sleeve 301 is installed on the bracket 103. One end of the fixing sleeve 301 is connected to the nozzle to be tested. The water outlet of the nozzle is connected. The inner diameter of the fixed sleeve 301 is larger than the diameter of the water flow. A movable sleeve 302 is provided on the fixed sleeve 301. A detection hole 303 is opened at the end of the movable sleeve 302. The diameter of the detection hole 303 is larger than the diameter of the water flow. A connecting plate 304 is installed at the bottom of the movable sleeve 302. A pair of first crossbars 307 are provided on the side of the connecting plate 304. The first crossbar 307 is slidably inserted into the bracket 103. A tension spring 306 is sleeved on the first crossbar 307. The other end of the tension spring 306 is connected to the bracket 103.

[0034] Therefore, please refer to the following: Figure 2 When the water pump 101 is turned on, if the water flow from the nozzle under test gathers and passes through the detection hole 303 while the movable sleeve 302 remains stationary, it indicates that the jet pressure of the nozzle under test is qualified. If the water flow from the nozzle under test is dispersed, the dispersed water droplets will gather inside the movable sleeve 302. At this time, the speed of water accumulation inside the movable sleeve 302 is greater than the speed of water flow, which leads to an increase in the pressure on the inside of the movable sleeve 302. The movable sleeve 302 moves away from the fixed sleeve 301 due to the force on the inside of the movable sleeve 302, indicating that the jet pressure of the nozzle under test is unqualified.

[0035] In practical implementation, the movable sleeve 302 and the fixed sleeve 301 are detachably connected. By replacing the movable sleeve 302 with different depths, the distance between the detection hole 303 and the fixed sleeve 301 can be changed, thereby enabling detection at different nodes in the water flow path. Specifically, if a higher nozzle jet pressure is required, a longer movable sleeve 302 should be used to increase the distance between the detection hole 303 and the fixed sleeve 301. Conversely, if a lower nozzle jet pressure is required, a shorter movable sleeve 302 should be used to reduce the distance between the detection hole 303 and the fixed sleeve 301. In addition, an end cap with a water outlet hole can be detachably installed at the water outlet end of the movable sleeve 302. By replacing the end cap with different specifications, the inner diameter of the water outlet hole can be changed to detect loom nozzles of different precision.

[0036] In addition, a second crossbar 205 is installed on both sides of the connecting pipe 201. The second crossbar 205 is slidably inserted into the bracket 103. A compression spring 206 is sleeved on the second crossbar 205. The other end of the compression spring 206 is connected to the bracket 103. A threaded rod 203 is rotatably installed on one end of the connecting pipe 201. A handle 204 is provided on the other end of the threaded rod 203. The threaded rod 203 is threadedly connected to the bracket 103. By rotating the threaded rod 203 through the handle 204, the threaded rod 203 and the connecting pipe 201 can be moved radially, which makes it easy to press the nozzle to be tested against the fixed sleeve 301 through the connecting pipe 201.

[0037] Furthermore, please refer to Figure 5 The outlet end of the connecting pipe 201 is provided with an installation sleeve 202. The installation sleeve 202 is provided with a first sealing gasket 208. The end of the fixing sleeve 301 near the nozzle is provided with a second sealing gasket 312. When the nozzle to be tested is installed, the inlet end of the nozzle to be tested is placed inside the installation sleeve 202, and the inlet end of the nozzle to be tested is in close contact with the first sealing gasket 208, and the outlet end of the nozzle to be tested is in close contact with the second sealing gasket 312.

[0038] Additionally, please refer to Figure 4 The testing platform 102 is equipped with a support 403, on which a rotating shaft 404 is rotatably mounted. A torsion spring 405 is installed inside the support 403. One end of the torsion spring 405 is connected to the support 403, and the other end of the torsion spring 405 is connected to the rotating shaft 404. A rotating plate 401 is installed on the rotating shaft 404. The rotating plate 401 is located directly below the nozzle to be tested. After the test is completed, the handle 204 is rotated in the opposite direction, and the connecting pipe 201 and the mounting sleeve 202 move away from the nozzle. The nozzle loses its pressure and falls naturally onto the rotating plate 401 under the action of gravity.

[0039] In addition, a good product box 104 and a defective product box 105 are respectively provided on both sides of the inspection table 102, and a baffle 402 is provided on the edge of the turntable 401.

[0040] Furthermore, please refer to Figure 8 , Figure 9 A limiting ring 305 is installed on the side of the connecting plate 304 near the rotating shaft 404. A limiting groove 315 and a release groove 316 are provided on the limiting ring 305. The limiting groove 315 and the release groove 316 are connected. A limiting rod 406 is slidably arranged in the limiting groove 315. The limiting rod 406 is fixedly connected to the rotating shaft 404.

[0041] It should be noted that, under normal conditions, the limiting rod 406 is located in the limiting groove 315, the rotating plate 401 is tilted towards the good product box 104, and the torsion spring 405 in the support 403 is in a torsional state. If the nozzle jet pressure test is qualified, the nozzle will fall into the good product box 104 along the tilted rotating plate 401 after the test. If the nozzle jet pressure test is unqualified, the movable sleeve 302 drives the limiting ring 305 to move away from the support 403 through the connecting plate 304. The limiting rod 406 moves to the connection end of the limiting groove 315 and the release groove 316. The limiting rod 406 is no longer restricted by the limiting groove 315, the torsion spring 405 is released, and the rotating shaft 404 drives the rotating plate 401 to deflect towards the defective product box 105. When unloading, the unqualified nozzle falls into the defective product box 105 along the tilted rotating plate 401.

[0042] Additionally, after a defective nozzle completes its feeding process, to ensure the limiting rod 406 returns to the limiting groove 315, please refer to... Figure 10 , Figure 12 A guide plate 207 is provided at the bottom of the connecting pipe 201. The horizontal projection of the guide plate 207 is trapezoidal. A reset rod 407 is installed on the rotating shaft 404 to abut against the guide plate 207. Therefore, after the defective nozzle is fed, as the connecting pipe 201 moves, the inclined side of the guide plate 207 at the bottom of the connecting pipe 201 abuts against the reset rod 407, causing the rotating shaft 404 to reverse, the torsion spring 405 to twist, the rotating plate 401 to tilt back towards the good product box 104, and the limiting rod 406 to move to the connection end of the limiting groove 315 and the release groove 316. Please refer to [reference needed]. Figure 4 At this time, the movable sleeve 302, connecting plate 304, and limiting ring 305 are reset under the action of tension spring 306.

[0043] This embodiment also proposes an operation method for detecting the jet pressure of a water jet loom nozzle, including the following steps: S1. Preparation before testing: Clean the oil and burrs from the surface of the nozzle to be tested, and install the inlet and outlet pipes of the water pump 101. S2. Nozzle Jet Pressure Test: Fix the nozzle to be tested at the test position and determine the water flow concentration of the nozzle. If the water flow is concentrated, the jet pressure is considered qualified; if the water flow is diffused, the jet pressure is considered unqualified. The tested nozzles are divided into good and defective products. The specific process is as follows: a1: Set a movable sleeve 302 on the water flow path of the nozzle to be tested so that the axis of the nozzle to be tested coincides with the axis of the detection hole 303; a2: Turn on the water pump 101. If the water flow from the nozzle under test gathers and passes through the detection hole 303, and the movable sleeve 302 remains stationary, the jet pressure of the nozzle under test is considered to be qualified. If the water flow from the nozzle under test diverges and impacts the movable sleeve 302, and the movable sleeve 302 moves, the jet pressure of the nozzle under test is considered to be unqualified. a3: Nozzles with qualified jet pressure fall into the good product box 104 along the rotating plate 401. If the jet pressure of the nozzle is not qualified, the rotating plate 401 tilts towards the defective product box 105, and the nozzle with unqualified jet pressure falls into the defective product box 105 along the rotating plate 401. S3. Post-inspection processing: Remove moisture from the inside and outside of good nozzles. Send defective nozzles to the repair station to check for impurities clogging the inside of the defective nozzles and for deformation of the nozzle orifice. Clean nozzles with impurities clogging them with a high-pressure air gun. For nozzles with deformed nozzle orifices, perform secondary grinding. The repaired nozzles are re-inspected according to the first and second steps. Only those that pass the re-inspection can be returned to the good product area. If the re-inspection still fails to meet the standards, they are deemed scrapped.

[0044] Through the above technical solution, the water jet loom nozzle jet pressure testing device and its operation method provided in this solution, when the water pump 101 is turned on, if the water flow from the nozzle to be tested gathers and passes through the detection hole 303, and the movable sleeve 302 remains stationary, it indicates that the jet pressure of the nozzle to be tested is qualified. After the nozzle is tested, it falls into the good product box 104 along the inclined rotating plate 401. If the water flow from the nozzle to be tested is dispersed, the water flow ejected from the nozzle to be tested will impact the movable sleeve 302, causing the inner side of the movable sleeve 302 to be stressed. The movable sleeve 302 is connected to the connecting plate 30 4. The limiting ring 305 is moved away from the support 403, and the limiting rod 406 moves to the connection end of the limiting groove 315 and the release groove 316. The limiting rod 406 is no longer restricted by the limiting groove 315, the torsion spring 405 is released, and the rotating shaft 404 drives the rotating plate 401 to deflect towards the defective box 105. When feeding, the unqualified nozzles fall into the defective box 105 along the inclined rotating plate 401, thereby realizing the automatic judgment and classification of the nozzle jet pressure of the loom, without the need for manual visual observation, and improving the accuracy of the detection results.

[0045] It should be noted that a constant pressure valve (not shown in the figure) is installed at the outlet of the water pump 101. The constant pressure valve can ensure the stability of the output water pressure of the water pump 101, which is beneficial to improving the accuracy of the test results. The specific structure and principle of the constant pressure valve are well known to those skilled in the art and will not be described in detail here.

[0046] In some implementations of this solution, reference is made to Figure 5 , Figure 6 As shown, the bottom of the movable sleeve 302 is provided with a drainage groove 311, and a sealing plate 308 for sealing the drainage groove 311 is hinged to the bottom of the movable sleeve 302. A third sealing gasket 313 is provided near the movable sleeve 302 on the sealing plate 308, a first magnet block 309 is provided at the end of the sealing plate 308, and a second magnet block 310 for attracting the first magnet block 309 is provided at the bottom of the movable sleeve 302.

[0047] It should be noted that if the water flow from the nozzle under test is diffused, the water flow from the nozzle will impact the movable sleeve 302, causing water to accumulate inside the movable sleeve 302. During the next test, the accumulated water will create resistance to the water flow, resulting in test errors. Therefore, if the loom nozzle is unqualified, the water pressure inside the movable sleeve 302 will increase, causing the first magnet block 309 and the second magnet block 310 to separate, the sealing plate 308 to deflect, and the drainage groove 311 to open, so that the water accumulated inside the movable sleeve 302 can be drained. During the next test, the sealing plate 308 needs to be manually reset.

[0048] The preferred embodiments of this solution have been described in detail above with reference to the accompanying drawings. However, this solution is not limited to the specific details in the above embodiments. Within the scope of the technical concept of this solution, various simple modifications can be made to the technical solution, and these simple modifications all fall within the protection scope of this solution.

[0049] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this solution will not describe the various possible combinations separately.

[0050] Furthermore, various implementations of this solution can be combined in any way, as long as they do not violate the spirit of this solution, they should also be regarded as the content disclosed in this solution.

Claims

1. A device for detecting the jet pressure of a nozzle on a water jet loom, comprising a testing platform (102) and a water pump (101), characterized in that: A bracket (103) is installed on the testing platform (102), and a connecting pipe (201) is provided on the bracket (103). The water inlet of the connecting pipe (201) is connected to the water outlet of the water pump (101), and the water outlet of the connecting pipe (201) is connected to the water inlet of the nozzle to be tested. A fixed sleeve (301) is provided on the bracket (103). One end of the fixed sleeve (301) is connected to the water outlet end of the nozzle to be tested. A movable sleeve (302) is provided on the fixed sleeve (301). A detection hole (303) is opened at the end of the movable sleeve (302). A connecting plate (304) is installed at the bottom of the movable sleeve (302). A pair of first crossbars (307) are provided on the side of the connecting plate (304). The first crossbars (307) are slidably inserted into the bracket (103). A tension spring (306) is sleeved on the first crossbars (307). The other end of the tension spring (306) is connected to the bracket (103).

2. The nozzle jet pressure detection device for a water jet loom according to claim 1, characterized in that: A second crossbar (205) is installed on both sides of the connecting pipe (201). The second crossbar (205) is slidably inserted into the bracket (103). A compression spring (206) is sleeved on the second crossbar (205). The other end of the compression spring (206) is connected to the bracket (103). A threaded rod (203) is rotatably installed on one end of the connecting pipe (201). A handle (204) is provided on the other end of the threaded rod (203). The threaded rod (203) is threadedly connected to the bracket (103).

3. The nozzle jet pressure detection device for a water jet loom according to claim 1, characterized in that: The water outlet end of the connecting pipe (201) is provided with an installation sleeve (202), and a first sealing gasket (208) is provided inside the installation sleeve (202). A second sealing gasket (312) is provided at the end of the fixing sleeve (301) near the nozzle.

4. The jet pressure detection device for a water jet loom nozzle according to claim 1, characterized in that: The testing platform (102) is provided with a support (403), and a rotating shaft (404) is rotatably mounted on the support (403). A torsion spring (405) is provided inside the support (403). One end of the torsion spring (405) is connected to the support (403), and the other end of the torsion spring (405) is connected to the rotating shaft (404). A rotating plate (401) is provided on the rotating shaft (404), and the rotating plate (401) is located directly below the nozzle to be tested.

5. The nozzle jet pressure detection device for a water jet loom according to claim 4, characterized in that: The testing platform (102) is provided with a good product box (104) and a defective product box (105) on both sides, and a baffle (402) is provided on the edge of the rotating plate (401).

6. The nozzle jet pressure detection device for a water jet loom according to claim 4, characterized in that: A limiting ring (305) is installed on the side of the connecting plate (304) near the rotating shaft (404). A limiting groove (315) and a release groove (316) are provided on the limiting ring (305). The limiting groove (315) and the release groove (316) are connected. A limiting rod (406) is slidably arranged in the limiting groove (315). The limiting rod (406) is fixedly connected to the rotating shaft (404).

7. The nozzle jet pressure detection device for a water jet loom according to claim 6, characterized in that: The bottom of the connecting tube (201) is provided with a guide plate (207), and a reset rod (407) for contacting the guide plate (207) is installed on the rotating shaft (404).

8. The nozzle jet pressure detection device for a water jet loom according to claim 1, characterized in that: The bottom of the movable sleeve (302) is provided with a drainage groove (311), and a sealing plate (308) for sealing the drainage groove (311) is hinged to the bottom of the movable sleeve (302). A third sealing gasket (313) is provided on the sealing plate (308) near the movable sleeve (302).

9. The nozzle jet pressure detection device for a water jet loom according to claim 8, characterized in that: The sealing plate (308) is provided with a first magnet block (309) at its end, and the movable sleeve (302) is provided with a second magnet block (310) at its bottom for engaging with the first magnet block (309).

10. A method for detecting the jet pressure of a nozzle on a water-jet loom, characterized in that: The water jet loom nozzle jet pressure detection device according to any one of claims 1-9 includes the following steps: S1. Preparation before testing: Clean the oil and burrs on the surface of the nozzle to be tested, and install the inlet and outlet pipes of the water pump (101). S2. Nozzle Jet Pressure Test: Fix the nozzle to be tested at the test position and determine the water flow concentration of the nozzle. If the water flow is concentrated, the jet pressure is considered qualified; if the water flow is diffused, the jet pressure is considered unqualified. The tested nozzles are divided into good and defective products. The specific process is as follows: a1: Set a movable sleeve (302) on the water flow path of the nozzle to be tested so that the axis of the nozzle to be tested coincides with the axis of the detection hole (303); a2: Turn on the water pump (101). If the water flow of the nozzle to be tested gathers and passes through the detection hole (303), and the movable sleeve (302) remains stationary, it is considered that the jet pressure of the nozzle to be tested is qualified. If the water flow of the nozzle to be tested diverges and impacts the movable sleeve (302), and the movable sleeve (302) moves, it is considered that the jet pressure of the nozzle to be tested is unqualified. a3: Nozzles with qualified jet pressure fall into good product box (104) along the rotating plate (401). If the jet pressure of the nozzle is not qualified, the rotating plate (401) tilts towards the defective product box (105), and nozzles with unqualified jet pressure fall into defective product box (105) along the rotating plate (401). S3. Post-inspection processing: Remove moisture from the inside and outside of good nozzles. Send defective nozzles to the repair station to check for impurities clogging the inside of the defective nozzles and for deformation of the nozzle orifice. Clean nozzles with impurities clogging them with a high-pressure air gun. For nozzles with deformed nozzle orifices, perform secondary grinding. The repaired nozzles are re-inspected according to the first and second steps. Only those that pass the re-inspection can be returned to the good product area. If the re-inspection still fails to meet the standards, they are deemed scrapped.

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