Positive and negative washing circulation switching device

Abstract

The utility model discloses a positive and negative washing circulation switching device which comprises a washing barrel and a main pipe, one end of the main pipe is connected with the head end of the washing barrel, the other end of the main pipe is connected with the tail end of the washing barrel, a water suction pump is arranged on the main pipe, a first valve, a second valve and a third valve are arranged on the main pipe, and the first valve is arranged between the head end of the washing barrel and the water suction pump. The third valve is arranged between the tail end of the washing barrel and the water suction pump, and the second valve is arranged between the third valve and the water suction pump; a first bypass pipe and a second bypass pipe are connected to the main pipe in parallel, one end of the first bypass pipe is arranged between the first valve and the water suction pump, the other end of the first bypass pipe is arranged between the second valve and the tail end of the washing barrel, one end of the second bypass pipe is arranged between the first valve and the head end of the washing barrel, and the other end of the second bypass pipe is arranged between the second valve and the water suction pump. A fourth valve is arranged on the first bypass pipe, and a fifth valve is arranged on the second bypass pipe. According to the utility model, the forward and reverse circulation pipelines are additionally arranged on the washing barrel to solve the problem of non-uniform washing.

Description

Technical Field

[0001] The utility model belongs to the technical field of washing equipment, in particular to a forward and reverse washing cycle switching device. Background Art

[0002] The washing bucket is a container or equipment used for washing. As the core component of the washing equipment, its design and performance directly affect the washing effect, energy efficiency and service life. The water flow and movement mode of the washing bucket have a significant impact on the washing effect. When the existing washing bucket rinses the granular materials, the washing effect is uneven, and the rinsing result has a great impact on the qualified rate of the granular materials. It is necessary to design a device to solve the problem of uneven washing effect of granular materials, thereby improving the qualified rate of granular materials. Utility Model Content

[0003] The purpose of the utility model is to provide a forward and reverse washing cycle switching device to solve at least one aspect of the problems and defects raised in the above-mentioned background technology.

[0004] A forward and reverse washing cycle switching device comprises a washing tub and a main pipe, wherein one end of the main pipe is connected to the head end of the washing tub, and the other end is connected to the rear end of the washing tub, a water pump is arranged on the main pipe, a first valve, a second valve and a third valve are arranged on the main pipe, the first valve is arranged between the head end of the washing tub and the water pump, the third valve is arranged between the rear end of the washing tub and the water pump, and the second valve is arranged between the third valve and the water pump;

[0005] A first side pipe and a second side pipe are connected in parallel to the main pipe, one end of the first side pipe is arranged between the first valve and the water pump, and the other end is arranged between the second valve and the end of the washing tub, one end of the second side pipe is arranged between the first valve and the head end of the washing tub, and the other end is arranged between the second valve and the water pump, the first side pipe is provided with a fourth valve, and the second side pipe is provided with a fifth valve.

[0006] Furthermore, a discharge pipe is connected in parallel to the main pipe, and an inlet of the discharge pipe is arranged between the head end of the washing tub and the third valve.

[0007] Furthermore, the outlet of the discharge pipe is divided into two subsidiary pipes, one subsidiary pipe is provided with a sixth valve, and the other subsidiary pipe is provided with a seventh valve.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] 1. This solution adds forward and reverse circulation pipes to the washing tub, and installs valves on the pipes. The washing medium is forwardly circulated through the head end of the washing tub, the first valve, the water pump, the second valve, the third valve, and the end of the washing tub. The washing medium is reversely circulated through the end of the washing tub, the third valve, the fourth valve, the water pump, the fifth valve, and the head end of the washing tub. The switches of different valves are controlled by an external automatic control system to adjust the passage path of the washing medium, thereby switching between forward and reverse circulation. By switching between forward and reverse circulation, washing dead corners can be reduced, washing effects can be improved, and the problem of uneven washing of particulate matter can be solved.

[0010] 2. This solution has a simple structure and low cost. It uses an automatic control system in conjunction with valves to change the pipeline path for the washing medium to switch between forward and reverse cycles. There is no need to switch the water pump forward and reverse, making the entire washing system more stable, reducing pump losses, reducing energy consumption, and avoiding the risks caused by frequent switching of the water pump forward and reverse. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] In the figure: 1, washing tub; 2, water pump; 3, main pipe; 301, first side pipe; 302, second side pipe; 303, discharge pipe; 4, first valve; 5, second valve; 6, third valve; 7, fourth valve; 8, fifth valve; 9, sixth valve; 10, seventh valve. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1As shown, in an embodiment of the utility model, a forward and reverse washing cycle switching device comprises a washing tub 1 and a main pipe 3, one end of the main pipe 3 is connected to the head end of the washing tub 1, and the other end is connected to the end of the washing tub 1, a water pump 2 is provided on the main pipe 3, and the washing medium in the washing tub 1 is extracted by the water pump 2, and a first valve 4, a second valve 5 and a third valve 6 are provided on the main pipe 3, the first valve 4 is arranged between the head end of the washing tub 1 and the water pump 2, the third valve 6 is arranged between the water pump 2 and the end of the washing tub 1, and the second valve 5 is arranged between the water pump 2 and the third valve 6.

[0017] A first bypass pipe 301 and a second bypass pipe 302 are connected in parallel to the main pipe 3. One end of the first bypass pipe 301 is arranged between the first valve 4 and the water pump 2, and the other end is arranged between the second valve 5 and the end of the washing tub 1. One end of the second bypass pipe 302 is arranged between the first valve 4 and the head end of the washing tub 1, and the other end is arranged between the second valve 5 and the water pump 2. A fourth valve 7 is arranged on the first bypass pipe 301, and a fifth valve 8 is arranged on the second bypass pipe 302.

[0018] It should be noted that all valves in this solution are controlled by an external automatic control system. When a forward washing cycle is performed, the control system will close the fourth valve 7 and the fifth valve 8, thereby closing the first bypass pipe 301 and the second bypass pipe 302. The washing medium is pumped out from the head end of the washing tub 1 under the operation of the water pump 2, and returns to the washing tub 1 through the first valve 4, the water pump 2, the second valve 5, the third valve 6, and the end of the washing tub 1. When a reverse washing cycle is performed, the control system will open the fourth valve 7 and the fifth valve 8, thereby opening the first bypass pipe 301 and the second bypass pipe 302, and close the first valve 4 and the second valve 5. The washing medium is pumped out from the end of the washing tub 1 under the operation of the water pump 2, and returns to the washing tub 1 through the third valve 6, the fourth valve 7, the water pump 2, the fifth valve 8, and the head end of the washing tub 1. The automatic control system switches and controls the valves to change the passage sequence of the washing medium, and completes the flushing of the forward and reverse cycles, thereby improving the washing efficiency of the material in the washing tub 1 and reducing the washing dead corners.

[0019] In the same embodiment, a discharge pipe 303 is also connected in parallel to the main pipe 3, the inlet of the discharge pipe 303 is arranged between the head end of the washing tub 1 and the third valve 6, and the outlet of the discharge pipe 303 is divided into two sub-pipes, one of which is provided with a sixth valve 9, and the other is provided with a seventh valve 10. When the forward and reverse washing cycles are performed, the sixth valve 9 and the seventh valve 10 remain in a closed state. When the material in the washing tub 1 is washed to a qualified standard, the automatic control system will close the third valve 6, the fourth valve 7 and the fifth valve 8, and open the sixth valve 9 and the seventh valve 10, so that the washing medium can pass through the discharge pipe 303. Under the operation of the water pump 2, the washing medium is pumped out from the head end of the washing tub 1, and enters the discharge pipe 303 along the main pipe 3, and is discharged from the discharge pipe 303.

[0020] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A forward and reverse washing cycle switching device, characterized in that: It comprises a washing tub and a main pipe, one end of the main pipe is connected to the head end of the washing tub, and the other end is connected to the rear end of the washing tub, a water pump is arranged on the main pipe, a first valve, a second valve and a third valve are arranged on the main pipe, the first valve is arranged between the head end of the washing tub and the water pump, the third valve is arranged between the rear end of the washing tub and the water pump, and the second valve is arranged between the third valve and the water pump; A first side pipe and a second side pipe are connected in parallel to the main pipe, one end of the first side pipe is arranged between the first valve and the water pump, and the other end is arranged between the second valve and the end of the washing tub, one end of the second side pipe is arranged between the first valve and the head end of the washing tub, and the other end is arranged between the second valve and the water pump, the first side pipe is provided with a fourth valve, and the second side pipe is provided with a fifth valve.

2. A forward and reverse washing cycle switching device according to claim 1, characterized in that: The main pipe is also connected in parallel with a discharge pipe, and the inlet of the discharge pipe is arranged between the head end of the washing tub and the third valve.

3. A forward and reverse washing cycle switching device according to claim 2, characterized in that: The outlet of the discharge pipe is divided into two auxiliary pipes, one of which is provided with a sixth valve, and the other is provided with a seventh valve.

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