Automatic adjusting type plunger pump of water-jet loom

Abstract

The invention discloses an automatic adjusting type plunger pump of a water-jet loom. The automatic adjusting type plunger pump is characterized in that firstly, water outlet pressure required by flexible weft insertion of a certain type of weft yarn is obtained through calculation; when the water outlet pressure of the weft yarn of a certain model is adjusted, the required water outlet pressure is input into the digital display controller; then the plunger pump is operated, if the pressure sensor monitors that the water outlet pressure is smaller than a set value, the digital display controller controls the driving mechanism to enable the adjusting end cover to rotate in the direction of further compressing the spring, and if the pressure sensor monitors that the water outlet pressure is larger than the set value, the digital display controller drives the adjusting end cover to rotate. The digital display controller controls the driving mechanism to enable the adjusting end cover to rotate in the direction of further loosening the spring, finally, the water outlet pressure monitored by the pressure sensor is the same as the water outlet pressure needed by the weft yarn of the model, and the effects of automatically adjusting the water outlet pressure and achieving flexible weft insertion are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of water jet loom accessories, in particular to an automatic regulating plunger pump of a water jet loom. Background Art

[0002] Water jet looms use water as the weft insertion medium. The water jet creates frictional traction on the weft yarn, driving it into the shed and interweaving with the warp yarn to form the fabric. The weft insertion system of a water jet loom consists of a plunger pump, an inlet check valve mounted on the pump's water inlet, an outlet check valve mounted on the pump's water outlet, an inlet pipe connected to the inlet check valve, an outlet pipe connected to the outlet check valve, and a nozzle connected to the outlet pipe.

[0003] During use, the plunger pump first moves the connecting rod outward, which in turn drives the plunger outward. During this time, the internal compression spring is compressed, creating negative pressure within the plunger pump. The one-way valve at the water inlet opens, allowing water to be drawn into the pump. Conversely, as the power mechanism drives the connecting rod back to its original position, the compression spring quickly resets the connecting rod and plunger, forcing the water in the plunger pump out of the outlet one-way valve and out of the nozzle through the outlet pipe. Furthermore, when the plunger pump is used in a water jet loom, the initial length of the compression spring can be adjusted by manually tightening the end cap. Because the compression spring's stroke remains constant, the shorter the initial length, the greater the rebound force generated when the compression spring resets, and the greater the pressure at which water is ejected from the outlet one-way valve.

[0004] When the water jet drives the weft yarn into the shed, if the water pressure is too low, the friction and traction on the weft yarn will be too small, resulting in the weft yarn's travel being reduced and unable to interweave with the warp yarn to form the fabric. If the water pressure is too high, the friction and traction on the weft yarn will be too high, and the weft yarn has a certain degree of elasticity, resulting in excessive deformation of the weft yarn and affecting the fabric quality. Therefore, flexible weft insertion was introduced, that is, the water pressure of the water jet should be as low as possible, under the premise that the weft yarn can form the fabric with the warp yarn.

[0005] However, in the prior art, in the process of adjusting the water outlet pressure by changing the degree of rotation of the adjusting end cover, the adjustment is also based on the experience of the operator. Therefore, under the premise that other components of the weft insertion system of the water jet loom remain unchanged, it is inconvenient to adjust the water outlet pressure by adjusting the initial length of the compression spring. Summary of the Invention

[0006] The purpose of the present invention is to provide an automatically adjustable plunger pump for a water jet loom, which has the functions of automatically adjusting the water outlet pressure and realizing flexible weft insertion.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: an automatically regulating plunger pump for a water jet loom, comprising a main shell, an inlet one-way valve arranged in the water inlet end of the main shell, an outlet one-way valve arranged in the water outlet end of the main shell, a guide tube arranged in the main shell, a plunger body telescopically arranged in the guide tube, a connecting sleeve arranged at one end of the plunger body located outside the guide tube and sleeved on the circumference of the guide tube, an adjusting end cover threadedly connected to one end of the main shell, a compression spring with both ends pressed between the adjusting end cover and the connecting sleeve, and also comprising a driving mechanism for driving the adjusting end cover to rotate clockwise or counterclockwise, a pressure sensor arranged at the water outlet end of the main shell and realizing monitoring of the outlet water pressure, and a digital display controller, wherein the pressure sensor and the digital display controller are signal-connected, and the driving mechanism and the digital display controller are signal-connected.

[0008] By adopting the above technical solution, the water outlet pressure required for a certain type of weft yarn to achieve flexible weft insertion is first calculated; then, when adjusting the water outlet pressure for a certain type of weft yarn, the required water outlet pressure is input into the digital display controller; then the plunger pump is operated, and if the pressure sensor detects that the water outlet pressure is less than the set value, the digital display controller controls the drive mechanism to rotate the adjustment end cover in the direction of further compressing the spring; if the pressure sensor detects that the water outlet pressure is greater than the set value, the digital display controller controls the drive mechanism to rotate the adjustment end cover in the direction of further loosening the spring, and finally the water outlet pressure detected by the pressure sensor is the same as the water outlet pressure required for the weft yarn of this type, and the system has the function of automatically adjusting the water outlet pressure and achieving flexible weft insertion.

[0009] The present invention is further configured as follows: the driving mechanism includes a driving ring gear arranged on the peripheral side of the adjusting end cover, a reduction motor, and a driving gear arranged on the output shaft of the reduction motor and meshing with the driving gear; within the adjustment stroke range of the adjusting end cover, the driving ring gear and the driving gear both remain in a meshing state.

[0010] By adopting the above technical solution, when driving the adjustable end cover to rotate, the reduction motor drives the driving gear to rotate forward and reverse, and the driving ring gear drives the driving gear meshing with it to rotate forward and reverse, thereby driving the adjustable end cover to rotate forward and reverse (clockwise or counterclockwise); at the same time, during the rotation of the adjustable end cover, the driving ring gear and the driving gear are restricted to maintain a meshing state, thereby avoiding the separation of the driving ring gear and the driving gear.

[0011] The present invention is further configured as follows: assuming the thickness of the driving gear ring is L1, the thickness of the driving gear is L2, and the adjustment range of the adjustment end cover is L3, L1, L2 and L3 satisfy the following relationship: L3≤|L1-L2|.

[0012] By adopting the above technical solution, during the rotation of the adjusting end cover, the position of the driving gear ring will also move left and right. At this time, by restricting the relationship of L3 ≤ |L1 - L2|, within the adjusting stroke range L3 of the adjusting end cover, it can be ensured that the driving gear ring and the driving gear remain in a meshing state.

[0013] A further setting of the present invention is that: a telescopic part in the shape of a regular polygon is provided on the circumferential side of the adjusting end cover, the driving gear ring is telescopically arranged on the telescopic part, and a first displacement limiting component for restricting the driving gear ring from moving left and right following the adjusting end cover and not affecting the rotation of the driving gear ring is provided on the adjusting end cover.

[0014] By adopting the above technical solution, during the rotation of the adjusting end cover, by telescopically arranging the driving gear ring on the telescopic part and providing a first displacement limiting component on the adjusting end cover for restricting the driving gear ring from moving left and right following the adjusting end cover and not affecting the rotation of the driving gear ring, the driving gear ring and the driving gear can also be kept in a meshing state.

[0015] A further setting of the present invention is that: the first displacement limiting component includes a plurality of support rods provided on the main housing, and a plurality of connecting sleeves provided at the ends of the support rods and having a "U" - shaped cross - section. A connecting part with an "L" - shaped cross - section is provided on the end face of the driving gear ring close to the main housing, and the plurality of connecting sleeves are sleeved on the connecting part from the circumferential side of the driving gear ring to limit the displacement of the driving gear ring.

[0016] By adopting the above technical solution, the first displacement limiting component includes a plurality of support rods and a plurality of connecting sleeves. At this time, the connecting sleeves are sleeved on the connecting part from the circumferential side of the driving gear ring to limit the displacement of the driving gear ring, thereby restricting the driving gear ring from displacing following the adjusting end cover and keeping the driving gear ring and the driving gear in a meshing state.

[0017] A further setting of the present invention is that: a plurality of insertion holes are provided on the circumferential side of the main housing, an embedding groove extending to the end face close to the adjusting end cover and mating with the insertion holes is provided on the circumferential side of the main housing. The end of the support rod far from the connecting sleeve is an insertion end bent 90 degrees and embedded in the insertion hole, the end of the support rod close to the insertion end is embedded in the embedding groove, an arc - shaped plate abutting against the circumferential side of the main housing is provided at the end of the support rod close to the insertion end, and a connecting screw is provided between the arc - shaped plate and the main housing.

[0018] By adopting the above technical solution, the end of the support rod far from the connecting sleeve is an insertion end bent 90 degrees and embedded in the insertion hole, the end of the support rod close to the insertion end is embedded in the embedding groove, an arc - shaped plate abutting against the circumferential side of the main housing is provided at the end of the support rod close to the insertion end, and a connecting screw is provided between the arc - shaped plate and the main housing, thereby realizing the installation and fixation of the support rod.

[0019] The present invention is further configured as follows: the driving gear is telescopically arranged on the output shaft of the reduction motor, and a second displacement limiting component is provided between the driving gear and the driving ring gear to drive the driving gear to follow the driving ring gear and maintain an engaged state.

[0020] By adopting the above technical solution, during the process of adjusting the rotation of the end cover, the driving gear is telescopically arranged on the output shaft of the reduction motor, and a second displacement limit component is provided between the driving gear and the driving ring gear to drive the driving gear to move with the driving ring gear and maintain an engaged state, thereby keeping the driving ring gear and the driving gear in an engaged state.

[0021] The present invention is further configured as follows: the second displacement limiting assembly includes two limiting rings arranged on both sides of the driving gear, and a plurality of fixing screws for fixing the limiting rings on the driving gear, and the two limiting rings abut against both sides of the driving gear ring.

[0022] By adopting the above technical solution, the second displacement limit assembly includes two limit rings arranged on both sides of the driving gear and multiple fixing screws for fixing the limit rings on the driving gear. The two limit rings are in contact with both sides of the driving ring gear, so that the driving gear follows the driving ring gear to move, so that the driving ring gear and the driving gear remain in a meshing state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a structural diagram of Example 1 (the compression spring is in a compressed state);

[0024] Figure 2 is a schematic structural diagram of Example 2;

[0025] Figure 3 yes Figure 2 A local enlarged view at point A;

[0026] Figure 4 It is a structural diagram of Example 3.

[0027] Figure markings: 1. Main housing; 1-1. Plug-in hole; 1-2. Embedding groove; 2. Inlet one-way valve; 3. Outlet one-way valve; 4. Guide tube; 5. Plunger body; 6. Connecting sleeve; 7. Adjusting end cover; 7-1. Telescopic part; 8. Compression spring; 9-1. Drive ring gear; 9-1-1. Connecting part; 9-2. Reducer motor; 9-3. Drive gear; 10. Pressure sensor; 11. Digital display controller; 12. First displacement limit assembly; 12-1. Support rod; 12-1-1. Plug-in end; 12-1-2. Arc plate; 12-1-3. Connecting screw; 12-2. Connecting sleeve; 13. Second displacement limit assembly; 13-1. Limiting ring; 13-2. Fixing screw. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Example 1: An automatic regulating plunger pump for a water jet loom, such as Figure 1 As shown, it includes a main shell 1, an inlet one-way valve 2 arranged in the water inlet end of the main shell 1, an outlet one-way valve 3 arranged in the water outlet end of the main shell 1, a guide tube 4 arranged in the main shell 1, a plunger body 5 telescopically arranged in the guide tube 4, a connecting sleeve 6 arranged at one end of the plunger body 5 located outside the guide tube 4 and sleeved on the side of the guide tube 4, an adjusting end cover 7 threadedly connected to one end of the main shell 1, and a compression spring 8 with both ends pressed between the adjusting end cover 7 and the connecting sleeve 6.

[0030] like Figure 1 As shown, it also includes a driving mechanism for driving the regulating end cover 7 to rotate clockwise or counterclockwise, a pressure sensor 10 arranged at the water outlet end of the main shell 1 and used to monitor the water outlet pressure, and a digital display controller 11. The pressure sensor 10 and the digital display controller 11 are signal-connected, and the driving mechanism and the digital display controller 11 are signal-connected.

[0031] like Figure 1 As shown, the drive mechanism includes a drive ring gear 9-1 disposed on the periphery of the adjustment end cap 7, a reduction motor 9-2, and a drive gear 9-3 disposed on the output shaft of the reduction motor 9-2 and meshing with the drive gear 9-3. Within the adjustment range of the adjustment end cap 7, the drive ring gear 9-1 and the drive gear 9-3 remain meshed. Assuming the thickness of the drive ring gear 9-1 is L1, the thickness of the drive gear 9-3 is L2, and the adjustment range of the adjustment end cap 7 is L3, L1, L2, and L3 satisfy the following relationship: L3 ≤ |L1 - L2|, where L2 is greater than L1 in this embodiment. The reduction motor 9-2 is connected to the digital display controller 11 for signal communication.

[0032] Implementation effect: First, the water outlet pressure required for a certain type of weft yarn to achieve flexible weft insertion is obtained by calculation; then, when adjusting the water outlet pressure for a certain type of weft yarn, the required water outlet pressure is input into the digital display controller 11; then the plunger pump is operated, and if the pressure sensor 10 detects that the water outlet pressure is less than the set value, the digital display controller 11 controls the driving mechanism to rotate the adjusting end cover 7 in the direction of further compressing the spring 8; if the pressure sensor 10 detects that the water outlet pressure is greater than the set value, the digital display controller 11 controls the driving mechanism to rotate the adjusting end cover 7 in the direction of further loosening the spring, and finally the water outlet pressure detected by the pressure sensor 10 is the same as the water outlet pressure required for the type of weft yarn, which has the function of automatically adjusting the water outlet pressure and achieving flexible weft insertion.

[0033] When driving the adjusting end cover 7 to rotate, the driving gear 9-3 is driven to rotate forward and backward by the reduction motor 9-2, and the driving gear ring 9-1 drives the driving gear 9-3 meshed with it to rotate forward and backward, so as to drive the adjusting end cover 7 to rotate forward and backward (rotate clockwise or counterclockwise); at the same time, during the rotation of the adjusting end cover 7, by restricting the driving gear ring 9-1 and the driving gear 9-3 to maintain the meshing state, the separation of the driving gear ring 9-1 and the driving gear 9-3 is avoided. During the rotation of the adjusting end cover 7, the position of the driving gear ring 9-1 will also move left and right. At this time, by restricting the relationship of L3≤|L1-L2|, in the adjustment stroke range L3 of the adjusting end cover 7, the driving gear ring 9-1 and the driving gear 9-3 can maintain the meshing state.

[0034] Embodiment 2: An automatic-adjusting type plunger pump for a water jet loom, as Figure 2 and Figure 3 shown. The difference from Embodiment 1 is that the driving gear ring 9-1 and the driving gear 9-3 have the same thickness. A regular polygon-shaped telescopic part 7-1 is arranged on the circumferential side of the adjusting end cover 7, the driving gear ring 9-1 is telescopically arranged on the telescopic part 7-1, and a first displacement limiting component 12 for restricting the driving gear ring 9-1 from moving left and right following the adjusting end cover 7 and not affecting the rotation of the driving gear ring 9-1 is arranged on the adjusting end cover 7.

[0035] As Figure 2 and Figure 3 shown, the first displacement limiting component 12 includes a plurality of support rods 12-1 arranged on the main housing 1 and a plurality of connecting sleeves 12-2 arranged at the ends of the support rods 12- and having a "U" - shaped cross-section. A connecting part 9-1-1 with an "L" - shaped cross-section is arranged on the end face of the driving gear ring 9-1 close to the main housing 1, and the plurality of connecting sleeves 12-2 are sleeved on the connecting part 9-1-1 from the circumferential side of the driving gear ring 9-1 to restrict the displacement of the driving gear ring 9-1. A plurality of insertion holes 1-1 are arranged on the circumferential side of the main housing 1, and an embedding groove 1-2 extending to the end face close to the adjusting end cover 7 and matching with the insertion holes 1-1 is arranged on the circumferential side of the main housing 1. The end of the support rod 12-1 far from the connecting sleeve 12-2 is an insertion end 12-1-1 that is bent 90 degrees and embedded in the insertion hole 1-1, the end of the support rod 12-1 close to the insertion end 12-1-1 is embedded in the embedding groove 1-2, an arc-shaped plate 12-1-2 abutting against the circumferential side of the main housing 1 is arranged at the end of the support rod 12-1 close to the insertion end 12-1-1, and a connecting screw 12-1-3 is arranged between the arc-shaped plate 12-1-2 and the main housing 1.

[0036] Implementation effect: During the rotation of the adjusting end cover 7, the driving ring gear 9-1 is telescopically arranged on the telescopic part 7-1, and a first displacement limit component 12 is provided on the adjusting end cover 7 to limit the driving ring gear 9-1 from moving left and right with the adjusting end cover 7 and does not affect the rotation of the driving ring gear 9-1, thereby achieving the state in which the driving ring gear 9-1 and the driving gear 9-3 remain in meshing relationship.

[0037] The first displacement limiting assembly 12 includes a plurality of support rods 12-1 and a plurality of connecting sleeves 12-2. The connecting sleeves 12-2 are placed on the connecting portion 9-1-1 from the circumferential side of the drive gear ring 9-1 to limit the displacement of the drive gear ring 9-1, thereby limiting the displacement of the drive gear ring 9-1 following the displacement of the adjustment end cap 7, so that the drive gear ring 9-1 and the drive gear 9-3 remain in meshing engagement. The end of the rod away from the connecting sleeve 12-2 is a plug-in end 12-1-1 bent 90 degrees and embedded in the plug-in hole 1-1. The end of the support rod 12-1 near the plug-in end 12-1-1 is embedded in the embedding groove 1-2. The end of the support rod 12-1 near the plug-in end 12-1-1 is provided with an arc plate 12-1-2 that contacts the circumferential side of the main housing 1. A connecting screw 12-1-3 is provided between the arc plate 12-1-2 and the main housing 1 to achieve the installation and fixation of the support rod 12-1.

[0038] Example 3: An automatic regulating plunger pump for a water jet loom, such as Figure 4 As shown, the difference from Example 1 is that the driving ring gear 9-1 and the driving gear 9-3 have the same thickness. The driving gear 9-3 is telescopically arranged on the output shaft of the reduction motor 9-2, and a second displacement limiting assembly 13 is arranged between the driving gear 9-3 and the driving ring gear 9-1 to drive the driving gear 9-3 to move with the driving ring gear 9-1 and maintain an engaged state. The second displacement limiting assembly 13 includes two limiting rings 13-1 arranged on both sides of the driving gear 9-3, and a plurality of fixing screws 13-2 for fixing the limiting rings 13-1 to the driving gear 9-3. The two limiting rings 13-1 are in contact with both sides of the driving ring gear 9-1.

[0039] Implementation effect: During the rotation of the adjustment end cover 7, the drive gear 9-3 is telescopically arranged on the output shaft of the reduction motor 9-2, and a second displacement limiting assembly 13 is arranged between the drive gear 9-3 and the drive ring gear 9-1 to drive the drive gear 9-3 to move following the drive ring gear 9-1 and maintain an engaged state, thereby maintaining the drive ring gear 9-1 and the drive gear 9-3 in an engaged state. The second displacement limiting assembly 13 includes two limiting rings 13-1 arranged on both sides of the drive gear 9-3 and a plurality of fixing screws 13-2 for fixing the limiting rings 13-1 to the drive gear 9-3. The two limiting rings 13-1 abut against both sides of the drive ring gear 9-1, thereby achieving the drive gear 9-3 moving following the drive ring gear 9-1, so that the drive ring gear 9-1 and the drive gear 9-3 maintain an engaged state.

[0040] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An automatically adjustable plunger pump for a water jet loom, comprising a main housing (1), an inlet one-way valve (2) arranged in a water inlet end of the main housing (1), an outlet one-way valve (3) arranged in a water outlet end of the main housing (1), a guide tube (4) arranged in the main housing (1), a plunger body (5) telescopically arranged in the guide tube (4), a connecting sleeve (6) arranged at one end of the plunger body (5) located outside the guide tube (4) and sleeved on the circumference of the guide tube (4), an adjusting end cap (7) threadedly connected to one end of the main housing (1), and a compression spring (8) with both ends pressed between the adjusting end cap (7) and the connecting sleeve (6), characterized in that: It further includes a driving mechanism for driving the adjusting end cover (7) to rotate clockwise or counterclockwise, a pressure sensor (10) arranged at the water outlet end of the main housing (1) and used to monitor the water outlet pressure, and a digital display controller (11). The pressure sensor (10) is in signal connection with the digital display controller (11), and the driving mechanism is in signal connection with the digital display controller (11).

2. The automatic regulating plunger pump for a water jet loom according to claim 1, characterized in that: The driving mechanism includes a driving gear ring (9-1) arranged on the circumferential side of the adjusting end cover (7), a reduction motor (9-2), and a driving gear (9-3) arranged on the output shaft of the reduction motor (9-2) and meshed with the driving gear (9-3); within the adjusting stroke range of the adjusting end cover (7), the driving gear ring (9-1) and the driving gear (9-3) remain in a meshed state.

3. The automatic regulating plunger pump for a water jet loom according to claim 2, characterized in that: Let the thickness of the driving gear ring (9-1) be L1, let the thickness of the driving gear (9-3) be L2, and let the adjusting stroke range of the adjusting end cover (7) be L3. L1, L2, and L3 satisfy the following relationship: L3≤|L1-L2|.

4. The automatic regulating plunger pump for a water jet loom according to claim 2, characterized in that: A telescopic part (7-1) in the shape of a regular polygon is arranged on the circumferential side of the adjusting end cover (7). The driving gear ring (9-1) is telescopically arranged on the telescopic part (7-1). A first displacement limiting component (12) is arranged on the adjusting end cover (7) to limit the driving gear ring (9-1) from moving left and right along with the adjusting end cover (7) and not affecting the rotation of the driving gear ring (9-1).

5. The automatic regulating plunger pump for a water jet loom according to claim 4, characterized in that: The first displacement limiting component (12) includes multiple support rods (12-1) arranged on the main housing (1) and multiple connecting sleeves (12-2) arranged at the ends of the support rods (12-1) and having a "U” cross-section. A connecting part (9-1-1) with an "L” cross-section is arranged on the end face of the driving gear ring (9-1) close to the main housing (1). The multiple connecting sleeves (12-2) are sleeved on the connecting part (9-1-1) from the circumferential side of the driving gear ring (9-1) to limit the displacement of the driving gear ring (9-1).

6. The automatic regulating plunger pump for a water jet loom according to claim 5, characterized in that: Multiple plug holes (1-1) are arranged on the circumferential side of the main housing (1). An embedding groove (1-2) extending to the end face close to the adjusting end cover (7) and matching with the plug hole (1-1) is arranged on the circumferential side of the main housing (1). One end of the support rod (12-1) far from the connecting sleeve (12-2) is a plug-in end (12-1-1) bent 90 degrees and embedded in the plug hole (1-1). One end of the support rod (12-1) close to the plug-in end (12-1-1) is embedded in the embedding groove (1-2). An arc-shaped plate (12-1-2) abutting against the circumferential side of the main housing (1) is arranged at one end of the support rod (12-1) close to the plug-in end (12-1-1). A connecting screw (12-1-3) is arranged between the arc-shaped plate (12-1-2) and the main housing (1).

7. The automatic regulating plunger pump for a water jet loom according to claim 2, characterized in that: The driving gear (9-3) is telescopically arranged on the output shaft of the reduction motor (9-2), and a second displacement limiting component (13) is arranged between the driving gear (9-3) and the driving ring gear (9-1) to drive the driving gear (9-3) to move following the driving ring gear (9-1) and maintain an engaged state.

8. The automatic regulating plunger pump for a water jet loom according to claim 7, characterized in that: The second displacement limiting assembly (13) comprises two limiting rings (13-1) arranged on both sides of the driving gear (9-3), and a plurality of fixing screws (13-2) for fixing the limiting rings (13-1) on the driving gear (9-3), and the two limiting rings (13-1) are in contact with both sides of the driving gear ring (9-1).

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