Reversing valve with adjustable closing force

Abstract

The utility model discloses a reversing valve with adjustable closing force. The reversing valve comprises a reversing valve body, an electromagnetic controller is fixedly arranged at the left end of the reversing valve body, and an adjustable controller is fixedly arranged at the right end of the reversing valve body; a guide sliding groove is formed in the center of the interior of the reversing valve body, and an electromagnetic sliding rod is arranged in the guide sliding groove in a sliding mode. Liquid outlet channels are formed in the left side and the right side of the upper portion in the reversing valve body, and a liquid inlet channel is formed in the center of the lower portion in the reversing valve body. According to the reversing valve with the adjustable closing force, an electromagnetic sliding rod in the reversing valve body drives a closing column to move so that liquid outlet channels on the left side and the right side can be closed and opened, a transmission rotating shaft drives a threaded sleeve to move, and then the distance of the electromagnetic sliding rod in the moving process is changed; the right end of the electromagnetic sliding rod extrudes the abutting pressing plate and the abutting spring, so that the abutting pressing plate and the abutting spring drive the closing column to move to adjust the closing force.

Description

Technical Field

[0001] The utility model relates to the technical field of reversing valves, in particular to a reversing valve with adjustable closing force. Background Art

[0002] A reversing valve is a directional control valve with two or more flow forms and two or more oil ports. It is a valve that realizes the communication, cutting and reversal of hydraulic oil flow, as well as pressure unloading and sequential action control. During use, the valve disc is prone to fall off and the valve disc sealing ring is damaged because the valve disc continues to bear the huge pressure of the cylinder after closing.

[0003] Publication No. CN218895011U discloses a reversing valve with adjustable closing force, which drives two sealing covers to move up and down crosswise by rotating a hand wheel, and adjusts the closing force of the entire reversing valve body by the amount of coverage of the sealing covers and the connecting pipe, so as to ensure the tightness of the closing of the reversing valve, and greatly reduce the pressure on the valve disc sealing ring, prevent the sealing ring from being crushed and deformed, thereby extending the service life of the valve disc sealing ring;

[0004] However, the above-mentioned reversing valve with adjustable closing force still has the following problems during actual use: although the closing pressure is adjusted by the covering area of ​​the sealing cover and the connecting pipe, the overall adjustment is driven by the meshing gears. After the internal pressure of the reversing valve is pressurized, the gears do not have a self-locking effect, which can easily cause displacement of the sealing cover. At the same time, the covering reversing valve is also prone to seal aging during long-term use, which in turn affects the sealing effect of the reversing valve.

[0005] Therefore, we propose a reversing valve with adjustable closing force to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a reversing valve with adjustable closing force, in order to solve the problem that the adjustment of the existing reversing valve is driven by meshing gears, and then after the reversing valve is pressurized, the gears do not have a self-locking effect, which easily causes displacement of the sealing cover, and the covering reversing valve is also prone to seal aging during long-term use, thereby affecting the sealing effect of the reversing valve.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reversing valve with adjustable closing force, comprising a reversing valve body, and a liquid outlet module fixedly installed in the middle of the upper part of the reversing valve body, and a liquid inlet module fixedly arranged in the middle of the lower part of the reversing valve body;

[0008] The left end of the reversing valve body is fixedly provided with an electromagnetic controller, and the right end of the reversing valve body is fixedly provided with an adjustable controller;

[0009] It also includes: a guide slide groove is opened at the inner center position of the reversing valve body, and an electromagnetic slide rod is slidably arranged inside the guide slide groove;

[0010] Among them, liquid outlet channels are opened on both the left and right sides of the upper interior of the reversing valve body, and a liquid inlet channel is opened at the central position of the lower interior of the reversing valve body.

[0011] Preferably, the inner ends of the liquid outlet channels on the upper and lower sides inside the reversing valve body and the inner ends of the liquid inlet channels are connected to the guide groove, and the outer ends of the liquid outlet channels on the left and right sides above the reversing valve body are connected to the interior of the liquid outlet module, and the outer end of the liquid inlet channel in the middle part below the reversing valve body is connected to the interior of the liquid inlet module.

[0012] Preferably, closing cylinders are fixedly provided on the left and right outer walls of the electromagnetic slide rod inside the reversing valve body, and a transverse concentric structure is distributed between the electromagnetic slide rod and the closing cylinders on the left and right sides and the guide slide groove, and the left closing cylinder is sealed at the inner end of the left liquid outlet channel in the initial state, and the right closing cylinder is not sealed at the inner end of the right liquid outlet channel in the initial state.

[0013] Preferably, an adjusting knob is rotatably provided inside the adjustable controller through a bearing, and a transmission shaft is fixedly provided on the left side of the adjusting knob, and the left end of the transmission shaft is passed through the right side of the guide groove inside the reversing valve body, and an adjusting sleeve is rotatably provided on the right side of the guide groove inside the reversing valve body.

[0014] Preferably, positioning grooves are provided at both upper and lower ends of the inner right side of the guide groove, and a threaded sleeve is slidably arranged at the inner right side of the guide groove, and the upper and lower sides of the left end of the threaded sleeve are slidably engaged in the interior of the positioning groove, and the positioning groove limits the threaded sleeve so that the threaded sleeve can only slide and cannot rotate.

[0015] Preferably, the threaded sleeve on the right side of the guide groove is threadedly connected to the adjusting sleeve, and the right end of the adjusting sleeve is fixedly connected to the left end of the transmission shaft inside the guide groove, and a resistance pressure plate is slidingly provided inside the threaded sleeve, and the resistance pressure plate and the threaded sleeve are connected to each other through a resistance spring.

[0016] Preferably, the left end of the electromagnetic slide rod inside the guide groove is powered off and relaxed by the electromagnetic controller on the left side of the reversing valve body, and the right end of the electromagnetic slide rod after movement abuts against the resistance pressure plate inside the threaded sleeve, and the closing force is adjusted through the threaded connection between the threaded sleeve and the adjusting sleeve.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the reversing valve with adjustable closing force drives the closing column to move through the electromagnetic slide bar inside the reversing valve body, so as to close and open the liquid outlet channels on the left and right sides, and the transmission shaft drives the threaded sleeve to move, thereby changing the distance of the electromagnetic slide bar when moving, and the right end of the electromagnetic slide bar squeezes the contact pressure plate and the contact spring to drive the closing column to move to adjust the closing force, and the specific contents are as follows:

[0018] 1. The electromagnetic slide bar slidingly arranged inside the guide chute drives the closing column to move, and the closing column at the left end does not close the liquid outlet channel on the upper left side, while the closing column at the right end of the electromagnetic slide bar closes the liquid outlet channel on the upper right side, so that the liquid flows through the lower liquid inlet channel through the guide chute, and then outputs to the left side of the liquid inlet module through the left liquid outlet channel, so as to realize the first output mode;

[0019] Furthermore, the closed cylinder on the left closes the liquid outlet channel on the left, while the closed cylinder on the right no longer closes the liquid outlet channel on the right, so that the liquid flows through the guide chute through the liquid inlet channel and is output to the other end of the liquid outlet module through the liquid outlet channel on the right, thereby realizing the second output mode;

[0020] 2. Rotate the adjustment knob to drive the transmission shaft to rotate inside the guide slot, and drive the adjusting sleeve to rotate at the same time. The threaded sleeve threadedly connected to the adjusting sleeve slides and engages in the positioning slot inside the guide slot. The threaded sleeve can move but cannot rotate, thereby driving the threaded sleeve to move during the rotation of the adjusting sleeve. The right end of the electromagnetic slide rod squeezes the contact pressure plate and the contact spring, so that it drives the closing column to move to adjust the closing force and improve the service life of the reversing valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the closed column of the utility model;

[0023] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0024] Figure 4 This is a schematic diagram of the structure of the utility model after the closed column moves;

[0025] Figure 5 This is a schematic diagram of the installation structure of the transmission shaft of the utility model;

[0026] Figure 6This is a schematic diagram of the installation structure of the resistance pressure plate of the utility model.

[0027] In the figure: 1. reversing valve body; 2. liquid outlet module; 3. liquid inlet module; 4. electromagnetic controller; 5. adjustable controller; 6. guide slide; 7. electromagnetic slide bar; 8. liquid outlet channel; 9. liquid inlet channel; 10. closing cylinder; 11. adjusting knob; 12. transmission shaft; 13. adjusting sleeve; 14. positioning slide; 15. threaded sleeve; 16. resistance pressure plate; 17. resistance spring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-Figure 6 , the utility model provides the following technical solutions:

[0030] Embodiment 1: In order to illustrate the working principle of the reversing valve body 1, the present embodiment adopts the following technical scheme: a reversing valve with adjustable closing force, comprising a reversing valve body 1, and a liquid outlet module 2 fixedly installed in the middle of the upper part of the reversing valve body 1, and a liquid inlet module 3 fixedly arranged in the middle of the lower part of the reversing valve body 1; an electromagnetic controller 4 is fixedly arranged at the left end of the reversing valve body 1;

[0031] A guide slide groove 6 is provided at the center position of the interior of the reversing valve body 1, and an electromagnetic slide rod 7 is slidably provided inside the guide slide groove 6; wherein, liquid outlet channels 8 are provided on both the upper left and right sides of the interior of the reversing valve body 1, and a liquid inlet channel 9 is provided at the center position of the lower interior of the reversing valve body 1; the inner ends of the liquid outlet channels 8 on the upper and lower sides of the interior of the reversing valve body 1 and the inner ends of the liquid inlet channel 9 are connected to the guide slide groove 6, and the outer ends of the liquid outlet channels 8 on the upper and lower sides of the reversing valve body 1 are connected to the interior of the liquid outlet module 2, and the outer end of the liquid inlet channel 9 in the lower middle part of the reversing valve body 1 is connected to the interior of the liquid inlet module 3;

[0032] The outer walls of the left and right sides of the electromagnetic slide bar 7 inside the reversing valve body 1 are fixedly provided with closing cylinders 10, and the electromagnetic slide bar 7 and the closing cylinders 10 on the left and right sides and the guide slide groove 6 are arranged in a transverse concentric structure, and the left closing cylinder 10 blocks the inner end of the left liquid outlet channel 8 in the initial state, and the right closing cylinder 10 does not block the inner end of the right liquid outlet channel 8 in the initial state;

[0033] like Figure 1-Figure 2 , Figure 4 As shown, when the reversing valve body 1 is used, the liquid outlet module 2 above the reversing valve body 1 is first connected to the liquid outlet pipe, and the liquid inlet module 3 below the reversing valve body 1 is connected to the liquid inlet pipe, and then in the initial state, the liquid inlet pipe inputs the liquid into the liquid inlet module 3, and then inputs the liquid into the guide chute 6 connected through the inside of the reversing valve body 1;

[0034] Further Figure 2 As shown, the closed cylinder 10 at the left end of the electromagnetic slide bar 7 inside the guide chute 6 does not close the liquid outlet channel 8 on the upper left side, while the closed cylinder 10 at the right end of the electromagnetic slide bar 7 closes the liquid outlet channel 8 on the upper right side, so that the liquid flows through the lower liquid inlet channel 9 through the guide chute 6 and is output to the left side of the liquid inlet module 3 through the left liquid outlet channel 8, so as to realize the first output mode;

[0035] Further Figure 4 As shown, by cutting off the power to the electromagnetic controller 4, the electromagnetic controller 4 no longer attracts the electromagnetic slide bar 7, so that the electromagnetic slide bar 7 drives the closing columns 10 on the left and right sides to slide to the right, so that the closing column 10 on the left closes the liquid outlet channel 8 on the left, and the closing column 10 on the right no longer closes the liquid outlet channel 8 on the right, so that the liquid flows through the guide slide groove 6 through the liquid inlet channel 9, and is output to the other end of the liquid outlet module 2 through the liquid outlet channel 8 on the right, thereby realizing the second output mode.

[0036] Embodiment 2: In order to illustrate the problems existing in the closing force adjustment process of the existing reversing valve body 1, the present embodiment adopts the following technical solutions: an adjustable controller 5 is fixedly arranged at the right end of the reversing valve body 1; an adjusting knob 11 is rotatably arranged inside the adjustable controller 5 through a bearing, and a transmission shaft 12 is fixedly arranged on the left side of the adjusting knob 11, and the left end of the transmission shaft 12 is penetrated and arranged on the right side of the guide slot 6 inside the reversing valve body 1, and an adjusting sleeve 13 is rotatably arranged on the right side of the guide slot 6 inside the reversing valve body 1;

[0037] Positioning slots 14 are provided at both upper and lower ends of the right side of the inner side of the guide slot 6, and a threaded sleeve 15 is slidably provided at the right side of the inner side of the guide slot 6, and both upper and lower sides of the left end of the threaded sleeve 15 are slidably engaged in the inner side of the positioning slot 14, and the positioning slot 14 limits the threaded sleeve 15 so that the threaded sleeve 15 can only slide but not rotate;

[0038] The threaded sleeve 15 on the right side of the guide slot 6 is threadedly connected to the adjusting sleeve 13, and the right end of the adjusting sleeve 13 is fixedly connected to the left end of the transmission shaft 12 inside the guide slot 6, and a resistance pressure plate 16 is provided inside the threaded sleeve 15 for sliding, and the resistance pressure plate 16 and the threaded sleeve 15 are connected to each other through a resistance spring 17; the left end of the electromagnetic slide rod 7 inside the guide slot 6 is powered off and relaxed by the electromagnetic controller 4 on the left side of the reversing valve body 1, and the right end of the electromagnetic slide rod 7 after movement is in resistance to the resistance pressure plate 16 inside the threaded sleeve 15, and the closing force is adjusted by the threaded connection between the threaded sleeve 15 and the adjusting sleeve 13;

[0039] like Figure 3-Figure 6 As shown, when the closing force needs to be adjusted, the adjusting knob 11 arranged inside the adjustable controller 5 is manually rotated, so that the adjusting knob 11 drives the transmission shaft 12 to rotate inside the guide slot 6 during the rotation process, and then the transmission shaft 12 drives the adjusting sleeve 13 inside the guide slot 6 to rotate, and the threaded sleeve 15 threadedly connected to the adjusting sleeve 13 slides and engages in the positioning slot 14 inside the guide slot 6, so that the threaded sleeve 15 can move but cannot rotate, and then the threaded sleeve 15 is driven to move during the rotation of the adjusting sleeve 13, thereby changing the distance of the electromagnetic slide rod 7 during movement, and the right end of the electromagnetic slide rod 7 squeezes the contact pressure plate 16 and the contact spring 17, so that it drives the closing column 10 to move to adjust the closing force, thereby improving the service life of the reversing valve body 1.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A reversing valve with adjustable closing force, comprising a reversing valve body (1), and a liquid outlet module (2) fixedly mounted on the upper middle part of the reversing valve body (1), and a liquid inlet module (3) fixedly arranged on the lower middle part of the reversing valve body (1); An electromagnetic controller (4) is fixedly arranged at the left end of the reversing valve body (1), and an adjustable controller (5) is fixedly arranged at the right end of the reversing valve body (1); It is characterized in that Also includes: A guide slide groove (6) is provided at the inner center of the reversing valve body (1), and an electromagnetic slide rod (7) is slidably provided inside the guide slide groove (6); Wherein, liquid outlet channels (8) are provided on both the left and right sides of the upper interior of the reversing valve body (1), and a liquid inlet channel (9) is provided at the center position of the lower interior of the reversing valve body (1); An adjusting knob (11) is rotatably arranged inside the adjustable controller (5) via a bearing, and a transmission shaft (12) is fixedly arranged on the left side of the adjusting knob (11), and the left end of the transmission shaft (12) is penetrated and arranged on the right side of the guide groove (6) inside the reversing valve body (1), and an adjusting sleeve (13) is rotatably arranged on the right side of the guide groove (6) inside the reversing valve body (1); The guide slide groove (6) is provided with positioning slide grooves (14) at both upper and lower ends on the right side of the interior, and a threaded sleeve (15) is slidably arranged on the right side of the interior of the guide slide groove (6), and the left end of the threaded sleeve (15) is slidably engaged with the interior of the positioning slide groove (14) at both upper and lower sides, and the positioning slide groove (14) limits the threaded sleeve (15), so that the threaded sleeve (15) can only slide but not rotate; The threaded sleeve (15) on the right side inside the guide groove (6) is threadedly connected to the adjusting sleeve (13), and the right end of the adjusting sleeve (13) is fixedly connected to the left end of the transmission shaft (12) inside the guide groove (6), and a resistance pressure plate (16) is slidably arranged inside the threaded sleeve (15), and the resistance pressure plate (16) and the threaded sleeve (15) are connected to each other via a resistance spring (17).

2. A reversing valve with adjustable closing force according to claim 1, characterized in that: The inner ends of the liquid outlet channels (8) on the upper and lower sides of the reversing valve body (1) and the inner ends of the liquid inlet channels (9) are connected to the guide slide groove (6), and the outer ends of the liquid outlet channels (8) on the left and right sides above the reversing valve body (1) are connected to the inside of the liquid outlet module (2), and the outer end of the liquid inlet channel (9) in the middle below the reversing valve body (1) is connected to the inside of the liquid inlet module (3).

3. A reversing valve with adjustable closing force according to claim 2, characterized in that: The outer walls of the left and right sides of the electromagnetic slide rod (7) inside the reversing valve body (1) are fixedly provided with closing cylinders (10), and the electromagnetic slide rod (7) and the closing cylinders (10) on the left and right sides and the guide slide groove (6) are arranged in a transverse concentric structure distribution, and the left closing cylinder (10) is blocked at the inner end of the left liquid outlet channel (8) in the initial state, and the right closing cylinder (10) is not blocked at the inner end of the right liquid outlet channel (8) in the initial state.

4. A reversing valve with adjustable closing force according to claim 1, characterized in that: The left end of the electromagnetic slide rod (7) inside the guide slide groove (6) is powered off and released by the electromagnetic controller (4) on the left side of the reversing valve body (1), and the right end of the electromagnetic slide rod (7) after movement abuts against the abutment pressure plate (16) inside the threaded sleeve (15), and the closing force is adjusted by the threaded connection between the threaded sleeve (15) and the adjusting sleeve (13).

Images