Convenient-to-adjust water retaining device for water-jet loom

By designing a water barrier device for easy adjustment in the water jet loom, the problems of incomplete sewage treatment and difficult to control the water flow pressure are solved, effective filtration of water flow impurities and accurate adjustment of water flow pressure are achieved, and weaving accuracy and product quality are improved.

CN222846936UActive Publication Date: 2025-05-09QINGDAO YUNCHUN GUICHUN MASCH TECH CO LTD
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Patent Information

Application Number
CN202421894166.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-07
Publication Date
2025-05-09
Estimated Expiration
2034-08-07

AI Technical Summary

Technical Problem

The sewage treatment system of existing water jet looms cannot effectively purify the sewage, resulting in clogging and damage to the nozzle. At the same time, the water pump cannot control the water flow pressure, which can easily cause weft yarn to break or low weaving accuracy.

Method used

A water barrier device for water jet loom that is easy to adjust is designed, including a control assembly and a filter assembly. The control assembly adjusts the pressure of the water flow through the cooperation of the ball screw and the control plug; the filter assembly filters the impurities in the water through the filter mesh and the sewage collection chamber.

Benefits of technology

Effectively filter impurities in the water, prevent nozzle blockage, control water flow pressure, avoid weft yarn breaks, and improve weaving accuracy and product quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of water-jet looms, and discloses a convenient-to-adjust water retaining device for a water-jet loom, which comprises a water inlet pipe and an adapter arranged at one end of the water inlet pipe, one end of the adapter is connected with an adjusting and controlling component, and one end of the adapter far away from the adjusting and controlling component is provided with a connecting pipe. After water flow pumped by the hand pump enters the adapter through the water inlet pipe, the ball screw is rotated to drive the ball screw sleeve to slide, the adjusting rod drives the control plug to move towards the control groove, and when the control plug gradually enters the control groove, the gap between the control groove and the control plug is gradually reduced; the water flow in the control groove is reduced, the pressure of the water flow is reduced, so that the traction force of the water flow sprayed by the spray needle is reduced, the flow speed of the water flow sprayed by the spray needle can be controlled, and the situation that the pressure of the water flow sprayed by the water pump cannot be controlled, so that the traction force of the water flow to weft yarns is too large, and the weft yarns are broken is avoided.
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Description

Technical Field

[0001] The utility model relates to the technical field of water jet looms, in particular to a water retaining device for water jet looms which is easy to adjust. Background Art

[0002] The working principle of the water jet loom is based on the operation of the water pump and the spray of water. During the operation of the loom, the rotation of the water pump cam causes the pump cam rod to pull the plunger to move to the left, so that the water pump draws water from the float box. After the water is sucked in, it is sprayed out through the nozzle to form a high-speed water column. At the same time, the yarn presser is turned on to release the weft yarn, which is driven by the water flow and led from one side of the fabric to the other. After the weft insertion is completed, the yarn presser is closed to clamp the weft yarn and wait for the next weft insertion. With the continuous advancement of textile technology and changes in market demand, water jet looms are also constantly developing and improving. Water jet looms are expected to play an important role in more fields and promote the sustainable development of the textile industry.

[0003] Since water jet looms need to use water flow to pull the weft yarn, the factories that use water jet looms are large water users. In order to respond to the requirements of the environmental protection department, the water used by textile factories for water jet looms needs to be recycled and reused to save water resources. However, the sewage treatment systems of most textile factories cannot truly purify the sewage. Long-term use can easily lead to nozzle blockage, and in severe cases, it can cause nozzle damage. In addition, the water pressure cannot be well controlled by pumping water through water pumps. If the water pressure is too high, the traction force of the water flow on the weft yarn is too large, which can easily cause the weft yarn to break. If the water pressure is too low, the traction force on the weft yarn is too small, resulting in low textile precision and the textile product quality cannot meet the standards. Summary of the invention

[0004] In view of the fact that the sewage treatment systems of most textile mills cannot truly purify sewage, long-term use may easily lead to nozzle blockage, and in severe cases may lead to nozzle damage. In addition, the water flow pressure cannot be well controlled by pumping water through the water pump. If the water flow pressure is too large, the traction force of the water flow on the weft yarn is too large, which may easily cause the weft yarn to break. If the water flow pressure is too small, the traction force on the weft yarn is too small, resulting in low textile precision and the textile product quality cannot meet the standards. The present utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide an easily adjustable water-retaining device for a water jet loom, the purpose of which is to filter impurities in the water flow before the water flow enters the nozzle to prevent impurities from entering the nozzle and causing blockage of the nozzle, and the device can control the pressure of the water flow so that the traction force of the water flow passing through the nozzle is controlled within an appropriate range, thereby avoiding the problem of weft yarn breakage caused by excessive water flow traction.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a water retaining device for a water jet loom that is easy to adjust, comprising a water inlet pipe and an adapter arranged at one end of the water inlet pipe, one end of the adapter is connected to a regulating component, an end of the adapter away from the regulating component is provided with a connecting pipe, an end of the inner wall of the connecting pipe close to the adapter is provided with a control groove, an end of the connecting pipe away from the adapter is fixedly sleeved with a sleeve, a fixing component is arranged at the upper end of the outer wall of the sleeve, a filter component is inserted into the inner wall of the sleeve, and a spray needle is connected to the front end of the filter component;

[0007] The regulating component includes a connecting seat arranged at one end of the adapter, a ball screw is rotatably connected inside the connecting seat, a ball screw sleeve is sleeved on the outer wall of the ball screw, a connecting rod is fixedly connected to the outer wall of the ball screw sleeve, an adjusting rod is fixedly connected to one end of the connecting rod close to the adapter, and the front end of the adjusting rod passes through the connecting seat and is connected to a control plug.

[0008] As a preferred solution of the water retaining device for a water jet loom that is easy to adjust as described in the utility model, the regulating component also includes a first sliding rod fixedly arranged inside the connecting seat, a first sliding sleeve is movablely sleeved on the outer wall of the first sliding rod, and the first sliding sleeve and the connecting rod are fixedly connected, the control plug is arranged in a truncated cone shape, and the end face radius of the control plug close to one end of the connecting pipe is smaller than the end face radius of the other end.

[0009] As a preferred solution of the adjustable water retaining device for a water jet loom described in the utility model, a first sealing sleeve is fixedly inserted into the outer wall of one end of the connecting seat close to the adapter, the adjusting rod movably passes through the first sealing sleeve, and the first sealing sleeve is in contact with the outer wall of the adjusting rod.

[0010] As a preferred solution of the adjustable water retaining device for a water jet loom described in the utility model, a control groove matching with a control plug is provided at one end of the connecting pipe close to the adapter, and the control groove is arranged in a truncated cone shape.

[0011] As a preferred solution of the adjustable water retaining device for a water jet loom described in the utility model, the filter assembly includes a filter tube movably inserted into the inner wall of the sleeve, a filter screen is movably inserted into the inner wall of the filter tube near the connecting tube, the filter screen is arranged in a funnel shape, a plurality of groups of filter holes are evenly arranged on the outer wall of the filter screen, a slider is arranged at the upper end of the filter screen, a slide groove matching the slider is arranged at the upper end of the filter tube, a push rod is arranged at the front end of the sleeve near the filter tube, the push rod is located in the slide groove and abuts against the slider.

[0012] As a preferred solution of the easily adjustable water retaining device for a water jet loom described in the utility model, the filter assembly also includes a dirt collecting bin arranged at the front end of the filter screen, a piston is movably inserted into the inner wall of the dirt collecting bin, a push rod is connected to the end of the piston away from the filter screen, and the outer wall of the push rod movably passes through the front end of the dirt collecting bin.

[0013] As a preferred solution of the adjustable water retaining device for a water jet loom described in the utility model, wherein: the outer wall fixed sleeve of the filter tube is provided with a second sealing sleeve, and the second sealing sleeve is fitted with the sleeve.

[0014] As a preferred solution of the adjustable water-retaining device for a water-jet loom described in the utility model, the fixing assembly includes a fixing block fixedly arranged on the upper end of the outer wall of the filter tube, a plug rod is movably inserted into the lower end of the fixing block, the plug rod and the outer wall of the upper end of the sleeve are fixedly connected, a second sliding rod is movably inserted into the upper end of the fixing block, a cavity is opened inside the fixing block, the second sliding rod is located inside the cavity and is fixedly sleeved with a second sliding sleeve, and the second sliding sleeve can slide along the inner wall of the cavity, the second sliding rod is located on the outer wall of the upper end of the second sliding sleeve and is movably sleeved with a spring, the lower end of the second sliding rod movably passes through the plug rod, and a positioning hole matching the second sliding rod is opened from top to bottom at the front end of the plug rod.

[0015] Beneficial effects of the utility model:

[0016] 1. The utility model provides a regulating component. When the water flow drawn by the hand pump enters the adapter through the water inlet pipe, the ball screw is then rotated to drive the ball screw sleeve to slide, and the regulating rod drives the control plug to move toward the control groove. When the control plug gradually enters the control groove, the gap between the control groove and the control plug gradually decreases, and the water flow rate in the control groove is reduced, the water pressure is reduced, and thus the traction force of the water flow sprayed by the spray needle is reduced. The above operation can control the flow rate of the water flow sprayed by the spray needle, and avoid the breakage of the weft yarn due to the excessive traction force of the water flow on the weft yarn caused by the uncontrollable pressure of the water flow sprayed by the water pump.

[0017] 2. The utility model provides a filter assembly. When water flows into the filter tube through the connecting pipe, the impurities in the water are separated from the water through the filtration of the filter net. After the filtration, the water flows into the spray needle through the filter hole opened in the filter net and is sprayed out. The impurities on the filter net enter the sewage collecting bin under the impact of the water flow. The impurities push the piston to slide along the inner wall of the sewage collecting bin under the impact of the water flow, so that the impurities gather in the sewage collecting bin, avoiding excessive impurities from adhering to the filter net and affecting the water output of the filter net. After the filtration, the water flows into the spray needle through the filter hole opened in the filter net and is sprayed out, thereby avoiding impurities in the water flow from entering the spray needle and damaging the spray needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 The utility model is a schematic diagram of the overall three-dimensional structure of the water retaining device for a water jet loom which is easy to adjust.

[0020] Figure 2 The utility model is a schematic diagram of the overall cross-sectional three-dimensional structure of the water retaining device for a water jet loom which is easy to adjust.

[0021] Figure 3 The utility model is a schematic diagram of a partial structural cross-section of a water retaining device for a water jet loom which is easy to adjust.

[0022] Figure 4 The utility model is a schematic diagram of the cross-sectional three-dimensional structure of the fixing assembly for the water jet loom which is easy to adjust.

[0023] Figure 5 The utility model is a schematic diagram of the cross-sectional three-dimensional structure of the filter assembly of the water retaining device for a water jet loom which is easy to adjust.

[0024] Description of reference numerals:

[0025] Inlet pipe; 2. Adapter; 3. Control assembly; 31. Connecting seat; 32. Ball screw; 33. Ball screw sleeve; 34. First slide bar; 35. First sleeve; 36. Connecting rod; 37. Adjusting rod; 38. Control plug; 39. First sealing sleeve; 4. Connecting pipe; 5. Control groove; 6. Sleeve; 7. Push rod; 8. Fixing assembly; 81. Fixing block; 82. Insert rod; 83. Second slide bar; 84. Cavity; 85. Second sleeve; 86. Spring; 87. Positioning hole; 9. Filter assembly; 91. Filter tube; 92. Filter net; 93. Slider; 94. Slide groove; 95. Dirt collecting bin; 96. Piston; 97. Push rod; 98. Second sealing sleeve; 10. Spray needle. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example

[0028] Reference Figure 1-3 , which is the first embodiment of the utility model, provides a water retaining device for a water jet loom that is easy to adjust, including a water inlet pipe 1 and an adapter 2 arranged at one end of the water inlet pipe 1, one end of the adapter 2 is connected to a regulating component 3, the end of the adapter 2 away from the regulating component 3 is provided with a connecting pipe 4, the end of the inner wall of the connecting pipe 4 close to the adapter 2 is provided with a control groove 5, the end of the connecting pipe 4 away from the adapter 2 is fixedly sleeved with a sleeve 6, the upper end of the outer wall of the sleeve 6 is provided with a fixing component 8, the inner wall of the sleeve 6 is inserted with a filter component 9, and the front end of the filter component 9 is connected with a spray needle 10;

[0029] The regulating component 3 includes a connecting seat 31 arranged at one end of the adapter 2, a ball screw 32 is rotatably connected inside the connecting seat 31, a ball screw sleeve 33 is sleeved on the outer wall of the ball screw 32, a connecting rod 36 is fixedly connected to the outer wall of the ball screw sleeve 33, an adjusting rod 37 is fixedly connected to one end of the connecting rod 36 close to the adapter 2, and the front end of the adjusting rod 37 passes through the connecting seat 31 and is connected to a control plug 38.

[0030] The regulating component 3 also includes a first sliding rod 34 fixedly arranged inside the connecting seat 31, a first sliding sleeve 35 is movably sleeved on the outer wall of the first sliding rod 34, and the first sliding sleeve 35 and the connecting rod 36 are fixedly connected, and the control plug 38 is configured to be truncated cone-shaped, and the end face radius of the control plug 38 close to the connecting pipe 4 is smaller than the end face radius of the other end.

[0031] A first sealing sleeve 39 is fixedly inserted into the outer wall of one end of the connecting seat 31 close to the adapter 2. The adjusting rod 37 moves through the first sealing sleeve 39. The first sealing sleeve 39 and the outer wall of the adjusting rod 37 fit together. The first sealing sleeve 39 can seal the adapter 2 and the connecting seat 31 to prevent water from entering the connecting seat 31.

[0032] A control groove 5 that matches with the control plug 38 is formed at one end of the connecting pipe 4 close to the adapter 2 , and the control groove 5 is configured in a truncated cone shape.

[0033] When the water flow drawn by the hand pump enters the adapter 2 through the water inlet pipe 1, the ball screw 32 is then rotated to drive the ball screw sleeve 33 to slide, and the ball screw sleeve 33 drives the first sliding sleeve 35 to slide along the outer wall of the first sliding rod 34 through the connecting rod 36, so that the adjusting rod 37 drives the control plug 38 to move toward the control groove 5. When the control plug 38 is located outside the control groove 5, the pressure of the water flow is the largest, and the traction force of the water flow sprayed by the spray needle 10 is the largest. When the control plug 38 gradually enters the control groove 5, the gap between the control groove 5 and the control plug 38 gradually decreases, and the water flow rate in the control groove 5 is reduced, the water pressure is reduced, and thus the traction force of the water flow sprayed by the spray needle 10 is reduced. Through the above operation, the flow rate of the water flow sprayed by the spray needle 10 can be controlled to avoid the traction force of the water flow on the weft yarn being too large and causing the weft yarn to break due to the inability to control the pressure of the water flow sprayed by the water pump. Example

[0034] Reference Figure 1-5 , which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that: the filter assembly 9 includes a filter tube 91 movably inserted into the inner wall of the sleeve 6, and a filter screen 92 is movably inserted into the inner wall of the filter tube 91 near the connecting tube 4. The filter screen 92 is arranged in a funnel shape, and a plurality of groups of filter holes are evenly opened on the outer wall of the filter screen 92. A slider 93 is arranged on the upper end of the filter screen 92, and a slide groove 94 matched with the slider 93 is arranged on the upper end of the filter tube 91. A push rod 7 is arranged on the front end of the sleeve 6 near the filter tube 91, and the push rod 7 is located in the slide groove 94 and abuts against the slider 93.

[0035] The filter assembly 9 also includes a dirt collecting bin 95 disposed at the front end of the filter screen 92 , a piston 96 is movably inserted into the inner wall of the dirt collecting bin 95 , and a push rod 97 is connected to the end of the piston 96 away from the filter screen 92 , and the outer wall of the push rod 97 movably passes through the front end of the dirt collecting bin 95 .

[0036] A second sealing sleeve 98 is fixedly sleeved on the outer wall of the filter tube 91 , and the second sealing sleeve 98 is in contact with the sleeve 6 .

[0037] The fixing assembly 8 includes a fixing block 81 fixedly arranged on the upper end of the outer wall of the filter tube 91, a plug rod 82 is movably inserted at the lower end of the fixing block 81, the plug rod 82 is fixedly connected to the outer wall of the upper end of the sleeve 6, a second slide rod 83 is movably inserted at the upper end of the fixing block 81, a cavity 84 is opened inside the fixing block 81, the second slide rod 83 is located inside the cavity 84 and is fixedly sleeved with a second slide sleeve 85, and the second slide sleeve 85 can slide along the inner wall of the cavity 84, the second slide rod 83 is located on the outer wall of the upper end of the second slide sleeve 85 and is movably sleeved with a spring 86, the lower end of the second slide rod 83 movably passes through the plug rod 82, and a positioning hole 87 matching the second slide rod 83 is opened from top to bottom at the front end of the plug rod 82.

[0038] When the filter screen 92 needs to be installed, the second slide bar 83 is pulled upward, and the second slide bar 83 drives the second slide sleeve 85 to slide upward along the cavity 84, and the second slide sleeve 85 compresses the spring 86, aligning the slide block 93 at the upper end of the filter screen 92 with the slide groove 94, inserting the filter screen 92 into the filter tube 91, and then aligning the slide groove 94 with the top rod 7, inserting the filter tube 91 into the sleeve 6, so that the connecting tube 4 and the filter tube 91 are abutted. In the process of inserting the filter tube 91 into the sleeve 6 according to the above steps, the insertion rod 82 at the upper end of the sleeve 6 is inserted into the fixed The filter 91 is inserted into the fixed block 81 until the filter tube 91 can no longer move. At this time, the second slide bar 83 is released. Under the elastic force of the spring 86, the second slide sleeve 85 drives the second slide bar 83 to be inserted into the positioning hole 87 provided in the insertion rod 82 to complete the installation of the filter tube 91. When the filter tube 91 is installed in the sleeve 6, the top rod 7 pushes the slide block 93 against the front end of the slide groove 94, so that the filter screen 92 cannot move in the filter tube 91. When the water flows into the filter tube 91 through the connecting pipe 4, the impurities in the water are separated from the water flow by filtering through the filter screen 92. The water after filtration passes through the filter hole on the filter screen 92 and enters the spray needle 10 to be sprayed out, thereby preventing impurities in the water flow from entering the spray needle 10 and damaging the spray needle. The impurities on the filter screen 92 enter the dirt collecting bin 95 under the impact of the water flow. The impurities push the piston 96 to slide along the inner wall of the dirt collecting bin 95 under the impact of the water flow, so that the impurities gather in the dirt collecting bin 95, avoiding excessive impurities from adhering to the filter screen 92 and affecting the water output of the filter screen 92. The filter screen 92 is set to a funnel shape, which can increase the filtering of the water flow and the filter screen 92. The filter screen 92 can be cleaned by lifting the second slide bar 83 upwards again so that the lower end of the second slide bar 83 leaves the positioning hole 87, and the filter screen 92 can be pulled out along the slide groove 94. The push rod 97 is pushed toward one end of the filter screen 92. The push rod 97 pushes the piston 96 to push the impurities in the dirt collecting bin 95 onto the filter screen 92. The filter screen 92 is then turned upside down to pour out the impurities. The filter screen 92 is then flushed from the inside and outside with an external water flow to flush out the residual impurities on the filter screen 92, thereby completing the cleaning of the filter screen 92.

[0039] The remaining structures are the same as those of Example 1.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A water retaining device for a water jet loom that is easily adjustable, comprising a water inlet pipe (1) and an adapter (2) arranged at one end of the water inlet pipe (1), characterized in that: One end of the adapter (2) is connected to a regulating component (3), an end of the adapter (2) away from the regulating component (3) is provided with a connecting pipe (4), an end of the inner wall of the connecting pipe (4) close to the adapter (2) is provided with a control groove (5), an end of the connecting pipe (4) away from the adapter (2) is fixedly sleeved with a sleeve (6), an upper end of the outer wall of the sleeve (6) is provided with a fixing component (8), an inner wall of the sleeve (6) is inserted with a filter component (9), and a front end of the filter component (9) is connected to a spray needle (10); The regulating assembly (3) comprises a connecting seat (31) arranged at one end of the adapter (2); a ball screw (32) is rotatably connected inside the connecting seat (31); a ball screw sleeve (33) is sleeved on the outer wall of the ball screw (32); a connecting rod (36) is fixedly connected to the outer wall of the ball screw sleeve (33); an adjusting rod (37) is fixedly connected to one end of the connecting rod (36) close to the adapter (2); and a front end of the adjusting rod (37) passes through the connecting seat (31) and is connected to a control plug (38).

2. The easily adjustable water retaining device for a water jet loom according to claim 1, characterized in that: The regulating assembly (3) further comprises a first sliding rod (34) fixedly arranged inside the connecting seat (31); a first sliding sleeve (35) is movably sleeved on the outer wall of the first sliding rod (34); the first sliding sleeve (35) and the connecting rod (36) are fixedly connected; the control plug (38) is configured to be truncated cone-shaped; and the end surface radius of one end of the control plug (38) close to the connecting pipe (4) is smaller than the end surface radius of the other end.

3. The adjustable water retaining device for a water jet loom according to claim 1, characterized in that: A first sealing sleeve (39) is fixedly inserted into the outer wall of one end of the connection seat (31) close to the adapter (2), and the adjustment rod (37) movably passes through the first sealing sleeve (39), and the first sealing sleeve (39) and the outer wall of the adjustment rod (37) are in close contact with each other.

4. The easily adjustable water retaining device for a water jet loom according to claim 1, characterized in that: A control groove (5) matching with the control plug (38) is formed at one end of the connecting pipe (4) close to the adapter (2); the control groove (5) is configured in a truncated cone shape.

5. The adjustable water retaining device for a water jet loom according to claim 1, characterized in that: The filter assembly (9) comprises a filter tube (91) movably inserted into the inner wall of the sleeve (6); a filter screen (92) is movably inserted into the inner wall of the filter tube (91) near the connecting tube (4); the filter screen (92) is arranged in a funnel shape; a plurality of groups of filter holes are evenly formed on the outer wall of the filter screen (92); a slider (93) is arranged at the upper end of the filter screen (92); a slide groove (94) matching with the slide groove (93) is arranged at the upper end of the filter tube (91); a push rod (7) is arranged near the front end of the filter tube (91) of the sleeve (6); the push rod (7) is located in the slide groove (94) and abuts against the slide groove (93).

6. The easily adjustable water retaining device for a water jet loom according to claim 1, characterized in that: The filter assembly (9) further comprises a dirt collecting bin (95) arranged at the front end of the filter screen (92); a piston (96) is movably inserted into the inner wall of the dirt collecting bin (95); an end of the piston (96) away from the filter screen (92) is connected to a push rod (97); and an outer wall of the push rod (97) movably passes through the front end of the dirt collecting bin (95).

7. The easily adjustable water retaining device for a water jet loom according to claim 5, characterized in that: The outer wall of the filter tube (91) is fixedly sleeved with a second sealing sleeve (98), and the second sealing sleeve (98) is fitted to the sleeve (6).

8. The easily adjustable water retaining device for a water jet loom according to claim 5, characterized in that: The fixing assembly (8) comprises a fixing block (81) fixedly arranged at the upper end of the outer wall of the filter tube (91); a plug rod (82) is movably inserted at the lower end of the fixing block (81); the plug rod (82) is fixedly connected to the outer wall of the upper end of the sleeve (6); a second sliding rod (83) is movably inserted at the upper end of the fixing block (81); a cavity (84) is opened inside the fixing block (81); the second sliding rod (83) is located inside the cavity (84) and is fixedly sleeved with a second sliding sleeve (85); and the second sliding sleeve (85) can slide along the inner wall of the cavity (84); the second sliding rod (83) is located on the outer wall of the upper end of the second sliding sleeve (85) and is movably sleeved with a spring (86); the lower end of the second sliding rod (83) movably passes through the plug rod (82); and a positioning hole (87) matching the second sliding rod (83) is opened from top to bottom at the front end of the plug rod (82).