Novel washing liquid automatic putting piston pump for washing machine

Abstract

The utility model discloses a novel washing liquid automatic putting piston pump for a washing machine, and relates to the field of washing liquid automatic putting piston pumps. The novel washing liquid automatic putting piston pump for the washing machine comprises a box body and a piston cylinder, the piston cylinder is fixedly installed at the bottom of the box body, a top cover is arranged at the top of the box body, a sliding groove is formed in the box body, a piston rod is connected to the sliding groove in a sleeved mode, and a piston plate is fixedly installed at the bottom of the piston rod. A sealing ring is fixedly mounted on the surface of the piston plate, a cavity is formed in the piston cylinder, the sealing ring is attached to the inner wall of the cavity, and the pushing plate penetrates through the surface of the box body and extends into the box body, so that the integrity of the pushing plate and the piston plate is improved; and the situation that the piston plate cannot normally extract and push the washing liquid due to the fact that the sealing ring falls off due to frequent friction between the sealing ring and the cavity in the long-time use process of the piston plate and the airtightness of the piston plate and the cavity is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the field of automatic piston pumps for dispensing washing liquid, in particular to a novel automatic piston pump for dispensing washing liquid for washing machines. Background Art

[0002] The automatic detergent dispensing device for washing machines is a very practical function in modern washing machines. It uses advanced technical means to achieve automatic and precise dispensing of detergent, thus bringing great convenience to users.

[0003] The utility model patent with patent announcement number CN 211815035 U discloses a piston-type automatic dispensing box for a washing machine, comprising: an outer box, a liquid outlet is arranged at the lowest point of the bottom of the outer box; a detergent box, used to hold detergent; a dispensing pump comprises a liquid taking port connected to the detergent box, a liquid filling port connected to the outer box, and a piston cavity connected to the liquid taking port and the liquid filling port; the piston cavity is provided with a piston rod and a piston, the piston cooperates with the inner wall of the piston cavity, a spiral guide rail is arranged on the piston rod, the piston sleeve is arranged on the piston rod and can be raised and lowered on the spiral guide rail to ensure accurate dispensing.

[0004] In the above utility model patent, the delivery pump also includes a driving assembly for driving the piston rod to move, thereby driving the piston to rise and fall, causing the volume of the piston cavity to change, and the laundry liquid enters the outer box from the detergent box through the liquid intake port and the liquid injection port, and is discharged from the liquid outlet. At the same time, a washing machine with the above delivery box is also provided, in which the piston is sleeved on the piston rod. After long-term use, the frequent friction contact between the piston and the piston cavity will cause the piston to fall off, making it impossible for the delivery box to accurately extract and deliver the laundry liquid. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a novel piston pump for automatically dispensing detergent for washing machines, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a new type of automatic piston pump for washing machine washing liquid, including a box body and a piston cylinder, the bottom of the box body is fixedly installed with a piston cylinder, the top of the box body is provided with a top cover, the inside of the box body is provided with a slide groove, the slide groove is sleeved with a piston rod, the bottom of the piston rod is fixedly installed with a piston plate, the surface of the piston plate is fixedly installed with a sealing ring, a cavity is provided inside the piston cylinder, the sealing ring is fitted with the inner wall of the cavity, a fixing plate is fixedly installed on the surface of the box body, a propulsion plate is rotatably installed on the surface of the fixing plate, a motor is provided on the surface of the fixing plate, the output end of the motor is fixedly connected with the propulsion plate, the propulsion plate passes through the surface of the box body and extends to the inside of the box body, and is far away from the motor. An eccentric shaft is fixedly installed on one end of the piston rod, a socket is provided on the top of the piston rod, and the socket is connected to the eccentric shaft. An extraction port and a release port are provided at the bottom of the piston cylinder and are communicated with the cavity. A bottom cover is provided at the bottom of the piston cylinder, an extraction pipe and an output pipe are provided at the bottom of the bottom cover, and the extraction pipe and the output pipe are both communicated with the inside of the bottom cover. A flow valve is provided between the piston cylinder and the bottom cover, and two flow ports are provided on the surface of the flow valve, which correspond to the extraction port and the release port at the bottom of the piston cylinder respectively. Two groups of one-way valves are provided on the surfaces of the two flow ports, and the flow directions of the two one-way valves are opposite. A circular groove is provided on the surface of the flow valve, and a rubber pad is fixedly installed on the inner wall of the circular groove. The motor controls the moving direction of the piston plate, thereby extracting and pushing the washing liquid.

[0007] Preferably, a notch is provided on the surface of the box body, a buckle is fixedly installed on the surface of the box body, a clamping strip is fixedly installed on the surface of the piston rod, and the clamping strip fits in the slide groove of the inner wall of the box body, and a triangular block is fixedly installed at the connection between the piston rod and the piston plate. The piston rod and the clamping strip on the surface are inserted into the slide groove of the inner wall of the box body, so that the piston rod can move along a fixed track.

[0008] Preferably, a circle of cams is provided on the surface of the piston plate, a circular hole is opened on the surface of the cam, the sealing ring passes through the circular hole and is fixedly installed on the surface of the piston plate, a protrusion is provided on the outer wall of the sealing ring, and the sealing ring is molded using an integrated injection molding process. The protrusion on the surface of the sealing ring improves the fit between the sealing ring and the cavity, improves the air tightness, and prevents leakage of washing liquid when the piston plate is extracting and pushing the washing liquid.

[0009] Preferably, the surface of the circulation valve and the surface of the circular groove are provided with embedding openings, the rubber pad passes through the embedding opening on the surface of the circular groove and fits with the embedding opening on the surface of the circulation valve. The rubber pad is formed by an integrated injection molding process and completely fills the circular groove, thereby improving the integrity of the rubber pad and the circulation valve, reducing the installation process and reducing labor costs.

[0010] Preferably, a guard ring a is fixedly installed around the extraction port and the release port at the bottom of the piston cylinder, and a guard ring b is fixedly installed on the inner wall of the bottom cover. The guard ring a and the guard ring b are both consistent with the shape of the circular groove on the surface of the circulation valve and fit with the rubber pad on the surface of the circular groove, isolating the working area of ​​the extraction pipe and the output pipe so that the two do not affect each other and are not connected to each other, thereby improving the extraction and pushing efficiency of the washing liquid.

[0011] Preferably, a docking port a is fixedly installed on the bottom of the piston cylinder, and a docking port b is fixedly installed on the surface of the bottom cover, and is fixed to the docking port a by fixing screws, so as to facilitate the installation and disassembly of parts.

[0012] Preferably, an anti-foolproof strip is fixedly installed on the surface of the circulation valve, and an anti-foolproof hole is opened on the surface of the bottom cover, and the shape of the hole matches the anti-foolproof strip on the surface of the circulation valve. Through the anti-foolproof design, the circulation valve is installed in the correct direction between the piston cylinder and the bottom cover, avoiding confusion between the functions of the extraction pipe and the output pipe caused by the wrong installation direction of the circulation valve.

[0013] The utility model provides a novel automatic piston pump for washing machine.

[0014] Beneficial effects:

[0015] (1) The new type of washing machine automatic washing liquid delivery piston pump improves the air tightness between the piston plate and the cavity by changing the structure and connection method between the piston plate and the sealing ring. The sealing ring passes through the circular hole on the surface of the piston plate and is firmly fixed to the surface of the piston plate through an integral injection molding process, thereby improving the integrity with the piston plate and preventing the sealing ring from falling off due to frequent friction between the piston plate and the cavity during long-term use, affecting the air tightness between the piston plate and the cavity, and causing the piston plate to be unable to normally extract and push the washing liquid.

[0016] (2) The new washing machine uses a piston pump to automatically dispense detergent. The rubber pad on the surface of the circulation valve is formed by an integrated injection molding process and penetrates through the inlay opening on the surface of the circulation valve. The rubber pad is tightly clamped on the surface of the circulation valve, thereby improving the integrity of the device and enhancing the reliability of use. The staff does not need to install a separate sealing structure before installing the circulation valve, which facilitates the installation work of the staff, reduces the installation process, and saves labor costs. In addition, the rubber pad also improves the airtightness between the bottom cover and the piston cylinder, distinguishes the working areas of the extraction pipe and the output pipe, and improves the extraction and output efficiency of the detergent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the position structure of the eccentric shaft and the propulsion plate of the utility model;

[0019] Figure 3 This is a schematic diagram of the position structure of the propulsion plate and the fixed plate of the utility model;

[0020] Figure 4 This is a schematic diagram of the piston cylinder structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the position structure of the sealing ring and the piston plate of the utility model;

[0022] Figure 6 This is a schematic diagram of the position structure of the rubber pad and the flow valve of the utility model;

[0023] Figure 7 It is a schematic diagram of the bottom cover structure of the utility model.

[0024] In the figure: 1. box body; 11. slide groove; 12. buckle; 13. notch; 14. push plate; 15. eccentric shaft; 16. fixed plate; 2. piston cylinder; 21. cavity; 22. docking port a; 23. extraction port; 24. release port; 25. retaining ring a; 3. piston rod; 31. piston plate; 32. round hole; 33. sealing ring; 34. protrusion; 35. triangular block; 36. clamping strip; 37. sleeve port; 4. top cover; 5. circulation valve; 51. round groove; 52. inlay port; 53. circulation port; 54. foolproof insert strip; 55. one-way valve; 56. rubber pad; 6. bottom cover; 61. docking port b; 62. extraction tube; 63. output tube; 64. foolproof jack; 65. retaining ring b. DETAILED DESCRIPTION

[0025] 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 described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0026] See also Figure 1-Figure 7The utility model provides a technical solution: a novel automatic piston pump for washing machine washing liquid, comprising a box body 1 and a piston cylinder 2, the piston cylinder 2 is fixedly installed at the bottom of the box body 1, a top cover 4 is arranged on the top of the box body 1, a slide groove 11 is arranged inside the box body 1, a piston rod 3 is sleeved on the slide groove 11, a piston plate 31 is fixedly installed at the bottom of the piston rod 3, a sealing ring 33 is fixedly installed on the surface of the piston plate 31, a cavity 21 is arranged inside the piston cylinder 2, and the sealing ring 33 is fitted with the inner wall of the cavity 21, a fixed plate 16 is fixedly installed on the surface of the box body 1, a propulsion plate 14 is rotatably installed on the surface of the fixed plate 16, a motor is arranged on the surface of the fixed plate 16, the output end of the motor is fixedly connected to the propulsion plate 14, the propulsion plate 14 passes through the surface of the box body 1 and extends to the inside of the box body 1, and an eccentric shaft 15 is fixedly installed at the end away from the motor, A socket 37 is provided on the top of the plug rod 3, and the socket 37 is connected to the eccentric shaft 15. An extraction port 23 and a release port 24 are provided at the bottom of the piston cylinder 2, and are communicated with the cavity 21. A bottom cover 6 is provided at the bottom of the piston cylinder 2. An extraction pipe 62 and an output pipe 63 are provided at the bottom of the bottom cover 6, and the extraction pipe 62 and the output pipe 63 are both communicated with the inside of the bottom cover 6. A circulation valve 5 is provided between the piston cylinder 2 and the bottom cover 6. Two circulation ports 53 are provided on the surface of the circulation valve 5, which correspond to the extraction port 23 and the release port 24 at the bottom of the piston cylinder 2 respectively. Two groups of one-way valves 55 are provided on the surfaces of the two circulation ports 53, and the circulation directions of the two one-way valves 55 are opposite. A circular groove 51 is provided on the surface of the circulation valve 5, and a rubber pad 56 is fixedly installed on the inner wall of the circular groove 51. The motor controls the moving direction of the piston plate 31, thereby extracting and pushing the washing liquid.

[0027] A notch 13 is provided on the surface of the box body 1, a buckle 12 is fixedly installed on the surface of the box body 1, a clamping strip 36 is fixedly installed on the surface of the piston rod 3, and the clamping strip 36 is fitted with the slide groove 11 on the inner wall of the box body 1, and a triangular block 35 is fixedly installed at the connection between the piston rod 3 and the piston plate 31. The piston rod 3 and the clamping strip 36 on the surface are inserted into the slide groove 11 on the inner wall of the box body 1, so that the piston rod 3 can move along a fixed track.

[0028] A circle of cams is provided on the surface of the piston plate 31, and a circular hole 32 is opened on the surface of the cam. The sealing ring 33 passes through the circular hole 32 and is fixedly installed on the surface of the piston plate 31. A protrusion 34 is provided on the outer wall of the sealing ring 33. The sealing ring 33 adopts an integrated injection molding process. The protrusion 34 on the surface of the sealing ring 33 improves the fit between the sealing ring 33 and the cavity 21, improves the air tightness, and prevents the piston plate 31 from leaking the washing liquid when the washing liquid is extracted and pushed.

[0029] An embedding opening 52 is provided on the surface of the circulation valve 5 and the surface of the circular groove 51. The rubber pad 56 passes through the embedding opening 52 on the surface of the circular groove 51 and fits with the embedding opening 52 on the surface of the circulation valve 5. The rubber pad 56 adopts an integrated injection molding process and completely fills the circular groove 51, thereby improving the integrity of the rubber pad 56 and the circulation valve 5, reducing the installation process and reducing labor costs.

[0030] A retaining ring a25 is fixedly installed around the extraction port 23 and the release port 24 at the bottom of the piston cylinder 2, and a retaining ring b65 is fixedly installed on the inner wall of the bottom cover 6. The retaining ring a25 and the retaining ring b65 are consistent with the shape of the circular groove 51 on the surface of the circulation valve 5, and fit with the rubber pad 56 on the surface of the circular groove 51, isolating the working area of ​​the extraction pipe 62 and the output pipe 63, so that the two do not affect each other and are not connected to each other, thereby improving the extraction and pushing efficiency of the washing liquid.

[0031] A docking port a22 is fixedly installed at the bottom of the piston cylinder 2, and a docking port b61 is fixedly installed on the surface of the bottom cover 6, and is fixed to the docking port a22 by fixing screws, so as to facilitate the installation and disassembly of parts.

[0032] An anti-foolproofing strip 54 is fixedly installed on the surface of the circulation valve 5, and an anti-foolproofing plug hole 64 is opened on the surface of the bottom cover 6, and its shape is consistent with the anti-foolproofing strip 54 on the surface of the circulation valve 5. Through the anti-foolproofing design, the circulation valve 5 is installed between the piston cylinder 2 and the bottom cover 6 in the correct direction, avoiding confusion between the functions of the extraction pipe 62 and the output pipe 63 caused by the wrong installation direction of the circulation valve 5.

[0033] During operation, it is necessary to extract the washing liquid prepared in advance in the washing machine and inject it into the cleaning area. The control unit evaluates how much washing liquid needs to be extracted through the cleaning program set in the washing machine, controls the operation plan of the motor, starts the motor, and the rotating motor drives the propulsion plate 14 to rotate. The propulsion plate 14 lifts the piston rod 3 when rotating, and the piston rod 3 drives the piston plate 31 to slide upward inside the cavity 21 when moving, so that a vacuum environment is formed between the piston plate 31 and the cavity 21. The sealing ring 33 makes the piston plate 31 fit tightly with the inner wall of the cavity 21 to improve the air tightness and avoid air leakage during the movement of the piston plate 31 to affect the extraction efficiency. The sealing ring 33 is formed by an integrated molding process and is attached to the surface of the piston plate 31. The circular hole 32 on the surface of the piston plate 31 is penetrated to improve the integrity with the piston plate 31, so as to prevent the sealing ring 33 from falling off after the piston plate 31 is used for a long time, thereby affecting the normal use of the equipment and improving the reliability and service life of the equipment. In addition, the protrusion 34 on the surface of the sealing ring 33 improves the fit between the sealing ring 33 and the inner wall of the cavity 21, thereby improving the air tightness of the piston device. Under the action of the pressure difference between the inside and outside of the cavity 21, the extraction pipe 62 extracts the washing liquid, and the washing liquid enters the cavity 21 from the extraction port 23 through the circulation valve 5. At this time, the electric The brain controls the motor to rotate in the reverse direction so that the motor output end pushes the piston rod 3 to reset. The reset piston rod 3 squeezes the piston plate 31, so that the piston plate 31 pushes the washing liquid extracted from the cavity 21. The washing liquid pushed by the piston plate 31 enters the output pipe 63 through the flow valve 5 from the release port 24, and then flows into the cleaning area of ​​the washing machine through the output pipe 63. The one-way valve 55 in the flow valve 5 makes the flow port 53 at the extraction pipe 62 in a flow state when the piston plate 31 is extracting. During the advancement of the piston plate 31, the flow port 53 at the output pipe 63 is in a flow state, so that the washing liquid can only enter the cavity 21 through the extraction pipe 62. And it can only be released through the output pipe 63. The rubber pad 56 on the surface of the circulation valve 5 is tightly embedded in the surface of the circulation valve 5 through an integrated injection molding process, and is fitted with the retaining ring a25 and the retaining ring b65 to improve the air tightness between the bottom cover 6 and the piston cylinder 2 to prevent leakage of the washing liquid. At the same time, the working areas of the extraction pipe 62 and the output pipe 63 are also distinguished, so that the extraction pipe 62 and the output pipe 63 will not interfere with each other during operation, thereby improving the extraction and output efficiency of the washing liquid. In addition, through the integrated design of the circulation valve 5 and the rubber pad 56, the integrity of the parts is improved, and it is also easy to install, which will reduce the installation process and reduce labor costs.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel piston pump for automatically dispensing washing liquid for washing machines, comprising a housing (1) and a piston cylinder (2), characterized in that: A piston cylinder (2) is fixedly mounted on the bottom of the box body (1), a top cover (4) is arranged on the top of the box body (1), a slide groove (11) is arranged inside the box body (1), a piston rod (3) is sleeved on the slide groove (11), a piston plate (31) is fixedly mounted on the bottom of the piston rod (3), a sealing ring (33) is fixedly mounted on the surface of the piston plate (31), a cavity (21) is arranged inside the piston cylinder (2), the sealing ring (33) is in contact with the inner wall of the cavity (21), a fixing plate (16) is fixedly mounted on the surface of the box body (1), a propulsion plate (14) is rotatably mounted on the surface of the fixing plate (16), a motor is arranged on the surface of the fixing plate (16), the motor is connected to a control unit, an output end of the motor is fixedly connected to the propulsion plate (14), the propulsion plate (14) passes through the surface of the box body (1) and extends into the inside of the box body (1), and an eccentric shaft (15) is fixedly mounted on the end away from the motor, the piston rod (3) A sleeve interface (37) is provided at the top, and the sleeve interface (37) is connected to the eccentric shaft (15); an extraction port (23) and a release port (24) are provided at the bottom of the piston cylinder (2), and are communicated with the cavity (21); a bottom cover (6) is provided at the bottom of the piston cylinder (2); an extraction pipe (62) and an output pipe (63) are provided at the bottom of the bottom cover (6), and the extraction pipe (62) and the output pipe (63) are both communicated with the inside of the bottom cover (6); the piston cylinder (2 ) and the bottom cover (6), a circulation valve (5) is provided on the surface of the circulation valve (5), two circulation ports (53) are provided, respectively corresponding to the extraction port (23) and the release port (24) at the bottom of the piston cylinder (2), a one-way valve (55) is provided on the surface of each of the two circulation ports (53), and the two one-way valves (55) have opposite circulation directions, a circular groove (51) is provided on the surface of the circulation valve (5), and a rubber pad (56) is fixedly installed on the inner wall of the circular groove (51).

2. A novel automatic piston pump for washing machine detergent according to claim 1, characterized in that: A notch (13) is provided on the surface of the box body (1), a buckle (12) is fixedly installed on the surface of the box body (1), a clamping strip (36) is fixedly installed on the surface of the piston rod (3), and the clamping strip (36) is in contact with the slide groove (11) on the inner wall of the box body (1), and a triangular block (35) is fixedly installed at the connection between the piston rod (3) and the piston plate (31).

3. A novel automatic piston pump for washing machine detergent according to claim 1, characterized in that: A circle of cams is arranged on the surface of the piston plate (31), a circular hole (32) is opened on the surface of the cam, the sealing ring (33) passes through the circular hole (32) and is fixedly installed on the surface of the piston plate (31), a protrusion (34) is arranged on the outer wall of the sealing ring (33), and the sealing ring (33) adopts an integral injection molding process.

4. A novel automatic piston pump for washing machine detergent according to claim 1, characterized in that: The surface of the circulation valve (5) and the surface of the circular groove (51) are provided with an embedding opening (52); the rubber pad (56) penetrates the embedding opening (52) on the surface of the circular groove (51) and fits with the embedding opening (52) on the surface of the circulation valve (5); the rubber pad (56) is formed by an integral injection molding process and completely fills the circular groove (51).

5. A novel automatic piston pump for dispensing washing liquid for washing machines according to claim 1, characterized in that: A retaining ring a (25) is fixedly mounted on the bottom of the piston cylinder (2) around the extraction port (23) and the release port (24), and a retaining ring b (65) is fixedly mounted on the inner wall of the bottom cover (6). The retaining ring a (25) and the retaining ring b (65) are both in conformity with the shape of the circular groove (51) on the surface of the circulation valve (5), and are in close contact with the rubber pad (56) on the surface of the circular groove (51).

6. A novel automatic piston pump for washing machine detergent according to claim 1, characterized in that: A docking port a (22) is fixedly mounted on the bottom of the piston cylinder (2), and a docking port b (61) is fixedly mounted on the surface of the bottom cover (6), and is fixed to the docking port a (22) by means of fixing screws.

7. A novel automatic piston pump for dispensing washing liquid for washing machines according to claim 1, characterized in that: The surface of the circulation valve (5) is fixedly mounted with an anti-foolproof insert strip (54), and the surface of the bottom cover (6) is provided with an anti-foolproof insert hole (64), the shape of which matches that of the anti-foolproof insert strip (54) on the surface of the circulation valve (5).

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