Spraying system of sink dishwasher

Abstract

A spraying system of a sink dishwasher comprises a lower water cup, a water collecting cavity, a spraying arm, a crushing cutter set, a storage and discharge cavity, a motor and a water pump, the water pump comprises a cylindrical pump shell, a pump shaft, centrifugal blades, pump blades and nuts, a supporting base and a fixing column base are arranged on a base of the water collecting cavity, a supporting protrusion is arranged on a bottom plate of the lower water cup, and a supporting column is arranged on the storage and discharge cavity; a motor shaft is in running fit with a bottom plate of the lower water cup and a base of the water collecting cavity; the crushing cutter group is fixed with the motor shaft in the lower water cup; the supporting column is inserted into the supporting protrusion, the supporting protrusion supports the fixing column base, and the first bolt penetrates through the fixing column base and the supporting protrusion to be screwed with the supporting column and is detachable. The motor shaft penetrates through a shaft hole of the pump blade and the pump shaft and is screwed with a nut and is detachable; the supporting base supports the radial fixing plate and is detachably connected through a second bolt. After the spraying arm, the nut, the top cover plate and the water collecting cavity are detached and taken out, the crushing cutter set can be replaced, and compared with the prior art, the crushing cutter set is convenient to replace.

Description

Technical Field

[0001] The utility model relates to a sink dishwasher, in particular to a crushing spray system. Background Art

[0002] The current state of the art, according to Chinese Patent 201821612343.3, describes a spray device with a crushing function for a sink dishwasher. The device comprises a sink cup, a water collection chamber, a spray arm, a crushing blade assembly, an upper-opening storage and discharge chamber, and a motor. The bottom plate of the sink cup is evenly distributed with several drainage holes. The bottom plate of the spray arm is provided with a circular through-hole and a shaft sleeve surrounding the circular through-hole. The device also includes a water pump and a stirring impeller. The shaft sleeve rotatably engages with a pivot hole in the top cover of the water collection chamber. The water pump is located within the water collection chamber, with a gap between the lower end of the water pump and the base of the water collection chamber. The upper end of the pump housing rotatably engages with the circular through-hole of the spray arm. The stirring impeller is located within the storage and discharge chamber. The motor is fixedly connected to the storage and discharge chamber, with its shaft extending through the storage and discharge chamber and the bottom plate of the sink cup into the water collection chamber. The motor shaft connects the stirring impeller, crushing blade assembly, stirring impeller, and water pump impeller. Problems exist: Replacing the crushing blade assembly is inconvenient. Utility Model Content

[0003] The purpose of the utility model is to provide a spray system for a sink dishwasher, which has the characteristic of convenient replacement of a crushing knife group.

[0004] The utility model is realized as follows: a spray system for a sink dishwasher, comprising a lower water cup, a water collection chamber, a spray arm, a crushing knife group, a storage and discharge chamber with an upper opening, a motor and a water pump; the water collection chamber comprises a top cover plate made of plastic material, a base made of plastic material and a net cylinder body, the top cover plate is provided with a pivot hole; the spray arm is rotatably matched with the top cover plate and the water pump and is detachable; the special feature of the utility model is that the water pump comprises a cylindrical pump casing, a pump shaft, centrifugal blades provided at the upper end of the pump shaft, pump blades and a nut,

[0005] The bottom of the cylindrical pump casing is provided with an annular seat plate and a radial fixing plate.

[0006] The pump shaft includes a shaft hole and a countersunk hole. The pump shaft and pump blades are arranged up and down. The pump blades are arranged in the bottom of the cylindrical pump shell. The centrifugal blades are located above the cylindrical pump shell. The nut is arranged in the countersunk hole.

[0007] The base of the water collecting chamber is provided with at least three supporting seats and a fixing column seat.

[0008] The bottom plate of the lower water cup is provided with a hollow supporting protrusion with a lower opening.

[0009] A support column is provided on the storage and discharge cavity;

[0010] The motor shaft rotates with the bottom plate of the lower water cup and the base of the water collecting chamber, and the crushing knife group is fixed to the motor shaft in the lower water cup; the support column is inserted into the support protrusion, and the support protrusion supports the fixed column seat, and the first bolt passes through the fixed column seat and the support protrusion and is screwed together with the support column and is detachable; the motor shaft is screwed together with the axial hole and nut passing through the pump blade and the pump shaft and is detachable; the support seat supports the radial fixing plate and is detachably connected with the second bolt.

[0011] The spray system of the sink dishwasher is special in that: the motor shaft is provided with a shaft head, the diameter of the shaft head is smaller than the diameter of the motor shaft, the shaft head is in an arc shape and is provided with a thread;

[0012] The shaft hole of the pump shaft and the shaft hole of the pump blade are in an arc shape or a waist shape; the upper end of the motor shaft supports the pump blade.

[0013] The spray system of the sink dishwasher is special in that: the storage and discharge cavity is made of plastic material; and nuts are pre-embedded in the support column and the support base.

[0014] The spray system of the sink dishwasher is special in that the lower water cup includes a circular cylindrical portion, an inverted truncated cone shaped water collecting portion and a crushing cavity portion.

[0015] Also includes electric heating element,

[0016] The electric heating element is arranged on the truncated cone-shaped water collecting part; and the crushing knife group is arranged in the crushing cavity.

[0017] The spray system of the sink dishwasher is special in that: a radial rib is provided on the base of the water collecting chamber.

[0018] The radial rib plate is matched with the intersection of the circular cylindrical portion and the inverted frustum-shaped water collecting portion.

[0019] The spray system of the sink dishwasher is special in that: the pump blade includes a shaft seat and a blade, and a shaft hole is provided on the shaft seat;

[0020] The shaft seat is fixed to the lower end of the pump shaft.

[0021] The spray system of the sink dishwasher is special in that it also includes a detachable plug for blocking the sink hole.

[0022] The spray system of the sink dishwasher is special in that: the plug includes a top plate, a cylindrical plug portion and an axial protrusion;

[0023] The cylindrical plug-in portion is inserted into the countersunk hole, the axial protrusion is fitted with the inner wall of the countersunk hole, and the top plate is fitted with the upper end of the pump shaft.

[0024] The spray system of a sink dishwasher is characterized in that: a cylindrical interface is provided on the top cover plate, and a radial reinforcing plate is arranged around the cylindrical interface. The gap between the radial reinforcing plate and the cylindrical interface forms a plug-in groove.

[0025] The cylindrical interface is inserted into the body part of the net cylinder, and the upper end of the body part of the net cylinder is inserted into the plug-in groove.

[0026] For the spray system of a sink dishwasher of the present invention, after the spray arm, nut, top cover plate and water collection cavity are disassembled and taken out, the crushing knife group can be replaced more conveniently. Compared with the prior art, it is convenient to replace the crushing knife group. Description of the Drawings

[0027] Figure 1 is a cross-sectional view of the present invention.

[0028] Figure 2 is Figure 1 the A - A view of

[0029] Figure 3 is a three-dimensional cross-sectional view of the present invention.

[0030] Figure 4 is a three-dimensional view of the present invention.

[0031] Figure 5 is one of the three-dimensional exploded views of the present invention.

[0032] Figure 6 is the second three-dimensional exploded view of the present invention.

[0033] Figure 7 is the third three-dimensional exploded view of the present invention.

[0034] Figure 8 is a partial three-dimensional exploded view of the present invention. Detailed Description of the Embodiment

[0035] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] As Figure 1 , Figure 3 , Figure 5 shown, a spray system of a sink dishwasher includes a drain cup 1, a water collection chamber 2, a spray arm 3, a crushing knife group 4, an upper-opening storage and discharge chamber 5, a motor 6, and a water pump 7. The drain cup 1 is made by stamping stainless steel plates; the water collection chamber 2 includes a top cover plate 21 made of plastic material, a base 22 made of plastic material, and a net barrel part 23. A pivot hole is provided on the top cover plate 21; the spray arm 3 is rotatably and detachably engaged with the top cover plate 21 and the water pump 7.

[0038] As Figure 1 , Figure 5 , Figure 6 , Figure 8 shown, the water pump 7 includes a cylindrical pump housing 71, a pump shaft 72, a centrifugal impeller 73 provided at the upper end of the pump shaft 72, a pump blade 74, a nut 75, and a plug 76.

[0039] The bottom of the cylindrical pump housing 71 is provided with an annular seat plate 711 and a radial fixing plate 712. The radial fixing plates 712 are evenly distributed around the annular seat plate 711.

[0040] The pump shaft 72 includes a shaft hole 721 and a counterbore 722.

[0041] The pump shaft 72 and the pump blade 74 are arranged vertically. The pump shaft 72 and the pump blade 74 are arranged inside the cylindrical pump housing 71. The centrifugal impeller 73 is located above the cylindrical pump housing 71. The nut 75 is arranged in the counterbore 722, and the plug 76 seals the counterbore 722 and is detachable.

[0042] Three support seats 24 and four fixing column seats 25 are provided on the base 23 of the water collection chamber 2. The support seats 24 face upward, and the fixing column seats 25 face downward; connection holes and head counterbores are provided on the fixing column seats 25.

[0043] A hollow lower-opening support protrusion 11 is provided on the bottom plate of the drain cup 1.

[0044] Support columns 51 are provided on the storage and discharge chamber 5; the number of the support columns 51, the support protrusions 11, and the fixing column seats 25 is the same and they correspond to each other.

[0045] The motor shaft 61 is rotatably engaged with the bottom plate of the lower water cup 1 and the base 22 of the water collecting chamber 2, and the crushing knife group 4 is fixed to the motor shaft 61 in the lower water cup 1; the support column 51 is inserted into the support protrusion 11, and the support protrusion 11 supports the fixed column seat 25. The first bolt passes through the connection hole of the fixed column seat 25 and the support protrusion 11 and is screwed and detachable with the support column 51, and the head of the bolt is located in the head countersunk hole; the motor shaft 61 is screwed and detachably engaged with the nut through the shaft hole 721 passing through the pump blade 74 and the pump shaft 72; the support seat 24 supports the radial fixing plate 712 and is detachably connected with the second bolt;

[0046] The detachable connection mode and matching relationship of the spray arm 3, the top cover plate 21 and the cylindrical pump housing 71 are disclosed in Chinese Patent 201821612343.3, a spray device with a broken structure for a sink dishwasher.

[0047] With this structure, when the crushing blade group 4 needs to be maintained or replaced, the spray arm 3, the plug 76, the nut 75, the top cover plate 21 and the second bolt are disassembled in sequence, the water collecting chamber 2 and the water pump 7 are taken out, and then the crushing blade group 4 is exposed in the lower water cup 1, and can be replaced at this time;

[0048] Alternatively, first, disassemble the spray arm 3, plug 76, nut 75, and top cover plate 21; second, disassemble the first bolt; third, take out the water pump 7; fourth, disassemble the second bolt, take out the water collecting chamber, and expose the crushing knife group 4 in the lower water cup 1, which can be replaced at this time.

[0049] The top cover plate 21 is provided with a cylindrical interface 211 and a radial reinforcement plate 212 arranged around the cylindrical interface, and the gap between the radial reinforcement plate 212 and the cylindrical interface 212 constitutes a plug-in slot;

[0050] The cylindrical interface 211 is inserted into the net cylinder body 222, and the upper end of the net cylinder body 22 is inserted into the plug-in slot. With such a structure, the top cover plate 21 is easy to assemble and disassemble.

[0051] As a further improvement of the present invention: the motor shaft 61 is provided with a shaft head 62, the diameter of the shaft head 62 is smaller than the diameter of the motor shaft 61, the motor shaft 61 is waist-shaped, and the shaft head 62 is arc-shaped and provided with threads;

[0052] The shaft hole 721 of the pump shaft 72 and the shaft hole of the pump blade 74 are waist-shaped; the upper end of the motor shaft 61 supports the pump blade 74, and the shaft head 62 extends through the shaft hole 721 into the counterbore 722 and screws with the nut 75.

[0053] As a further improvement of the present invention: the storage and discharge chamber 5 is made of plastic material; nuts are pre-embedded in the support column 51 and the support seat 24.

[0054] As a further improvement of the utility model: the lower water cup 1 includes a circular cylinder part 12, an inverted frustum-shaped water collecting part 13 and a crushing cavity part 14,

[0055] It further includes an electric heating element 8,

[0056] The electric heating element 8 is arranged on the frustum-shaped water collecting part 13; the crushing knife group 4 is arranged in the crushing cavity part 14.

[0057] As a further improvement of the present utility model: radial rib plates 231 are arranged on the base 23 of the water collecting cavity 2,

[0058] The radial rib plates 231 are in fit with the intersections of the circular cylinder part 12 and the inverted frustum-shaped water collecting part 13. With such a structure, the water collecting cavity 2 is effectively prevented from shaking, the noise is reduced, and the water pump 7 can exert the maximum power.

[0059] The pump impeller 74 includes a shaft seat 741 and blades 742, and a shaft hole is arranged on the shaft seat 741;

[0060] The shaft seat 741 is fixed to the lower end of the pump shaft 72.

[0061] The plug 76 includes a top plate 761, a cylindrical insertion part 762 and an axial protrusion 763, and the axial protrusion is connected to the cylindrical insertion part 762 and the top plate 761;

[0062] The cylindrical insertion part 762 is inserted into the counterbore 722, the axial protrusion 763 is in fit with the inner wall of the counterbore 722, and the top plate 761 is in fit with the upper end of the pump shaft 72.

[0063] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A spray system for a sink dishwasher, comprising a drain cup, a water collection chamber, a spray arm, a crushing knife set, a storage and discharge chamber with an upper opening, a motor, and a water pump. The water collection chamber includes a top cover plate made of plastic material, a base made of plastic material, and a mesh cylinder part. The top cover plate is provided with a pivot hole; the spray arm is rotatably and detachably engaged with the top cover plate and the water pump; and it is characterized in that: The water pump includes a cylindrical pump housing, a pump shaft, a centrifugal impeller provided at the upper end of the pump shaft, a pump impeller and a nut. The bottom of the cylindrical pump housing is provided with an annular seat plate and a radial fixing plate. The pump shaft includes a shaft hole and a counterbore. The pump shaft and the pump impeller are arranged vertically. The pump impeller is arranged inside the bottom of the cylindrical pump housing, and the centrifugal impeller is located above the cylindrical pump housing. The nut is arranged in the counterbore. At least three support seats and fixed column seats are provided on the base of the water collecting cavity. The bottom plate of the lower water cup is provided with a support protrusion with a hollow lower opening. Support columns are provided on the storage and discharge cavity. The motor shaft is rotationally matched with the bottom plate of the lower water cup and the base of the water collecting cavity. The crushing knife group is fixed to the motor shaft inside the lower water cup. The support column is inserted into the support protrusion, and the support protrusion supports the fixed column seat. The first bolt passes through the fixed column seat and the support protrusion and is screwed with the support column and is detachable. The motor shaft passes through the shaft hole of the pump impeller and the pump shaft and is screwed with the nut and is detachable. The support seat supports the radial fixing plate and is detachably connected by a second bolt.

2. The spray system of a sink dishwasher according to claim 1, characterized in that: The motor shaft is provided with a shaft head. The diameter of the shaft head is smaller than that of the motor shaft. The shaft head is in a superior arc shape and is provided with threads. The shaft holes of the pump shaft and the pump impeller are in a superior arc shape or a kidney shape. The upper end of the motor shaft supports the pump impeller.

3. The spray system of a sink dishwasher according to claim 1, characterized in that: The storage and discharge cavity is made of plastic material. Nuts are embedded in the support columns and support seats.

4. The spray system of a sink dishwasher according to claim 1, characterized in that: The lower water cup includes a circular cylindrical body part, an inverted conical water collecting part and a crushing cavity part. It also includes an electric heating element. The electric heating element is arranged on the conical water collecting part. The crushing knife group is arranged inside the crushing cavity part.

5. The spray system of a sink dishwasher according to claim 4, characterized in that: Radial rib plates are provided on the base of the water collecting cavity. The radial rib plates are matched with the intersections of the circular cylindrical body part and the inverted conical water collecting part.

6. The spray system of a sink dishwasher according to claim 1, characterized in that: The pump impeller includes a shaft seat and blades. A shaft hole is arranged on the shaft seat. The shaft seat is fixed to the lower end of the pump shaft.

7. The spray system of a sink dishwasher according to claim 1, wherein: It also includes a plug for plugging the counterbore and is detachable.

8. The spray system of a sink dishwasher according to claim 7, characterized in that: The plug includes a top plate, a cylindrical insertion part and an axial protrusion. The cylindrical insertion part is inserted into the counterbore. The axial protrusion is attached to the inner wall of the counterbore. The top plate is attached to the upper end of the pump shaft.

9. The spray system of a sink dishwasher according to claim 1, 2, 3, 4, 5, 6, 7 or 8, characterized in that: The top cover plate is provided with a cylindrical interface and a radial reinforcing plate arranged around the cylindrical interface. The gap between the radial reinforcing plate and the cylindrical interface forms a plug-in groove. The cylindrical interface is inserted into the net cylindrical body part, and the upper end of the net cylindrical body part is inserted into the plug-in groove.

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