Positive pressure reverse discharge device of fecal suction truck
By using a four-way valve and a vacuum pump in conjunction with a solenoid valve for positive pressure reverse discharge technology, the discomfort caused by manual operation of traditional septic tank trucks has been solved, achieving automated septic tank discharge and a low-cost device design.
Patent Information
- Application Number
- CN202423073793.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Traditional septic tank trucks require manual operation of the sewage discharge port, which results in foul odors that are uncomfortable for workers, and large-diameter solenoid valves are expensive and unstable.
The system uses a four-way valve and a vacuum pump in conjunction with a solenoid valve. Through positive pressure reverse discharge technology, the waste inside the tank is discharged from the upper suction port. The vacuum pump creates a positive pressure state to prevent leakage of feces and sewage and foul odors.
It achieves automated sewage discharge, avoiding leakage and foul odors of feces and sewage, reducing equipment costs and simplifying manufacturing.
Smart Images
Figure CN223593533U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to environmental protection equipment technical field, is used for cleaning the sewage suction truck sewage condition, specifically pointing to a kind of suction tanker positive pressure reverse discharge device. BACKGROUND
[0002] Suction tanker as a kind of environmental protection equipment, it is mainly used to suck excrement, sewage, sludge and mixed with smaller suspended impurities liquid.In traditional suction tanker, excrement outlet is generally controlled using gate valve, but this way needs worker to open manually, and excrement and sewage stink are unbearable to worker.
[0003] At present, although using solenoid valve can overcome the problem of manual operation, but large-diameter solenoid valve itself cost is higher, there is the problem of use stability. SUMMARY
[0004] The utility model solves the technical problem mentioned in the above background, provides a kind of suction tanker positive pressure reverse discharge device, can discharge the dirt in tank from above suction port, avoid the drip, overflow of excrement and sewage when excrement is discharged, also avoid the stink of excrement and sewage when manually operating excrement valve brings the discomfort of worker.
[0005] To achieve the above-mentioned purpose, the technical scheme provided by the utility model is as follows: a kind of suction tanker positive pressure reverse discharge device, including tank body and vacuum pump, the upper end one side of tank body is equipped with suction pipe, and suction pipe is communicated with the lower end of the discharge pipe into tank body, electromagnetic valve is installed on the suction pipe outside the tank body, electromagnetic valve is communicated with the inside of suction pipe and external air when opening, the air inlet and the air outlet of vacuum pump are communicated to form circulation by inlet pipe and outlet pipe, the upper end other side of tank body is communicated inlet pipe and outlet pipe to form tee by negative pressure pipe, the tee of negative pressure pipe, inlet pipe and outlet pipe are connected by four-way valve, and the four-way valve is 2 in the clockwise direction in sequence from lower end, 3, 4 and 1.
[0006] In some embodiments, the lower end of negative pressure pipe is communicated with the 4 of four-way valve, the 4 of four-way valve is communicated with the 1 of four-way valve, the 3 of four-way valve is communicated with the 2 of four-way valve, the 2 of four-way valve is communicated with the air inlet pipe of vacuum pump, the 4 of four-way valve is communicated with the air outlet pipe of vacuum pump, and the air inlet pipe of vacuum pump is communicated with the air inlet pipe of vacuum pump.
[0007] In some embodiments, the upper end of the tank is connected to the 4th port of the four-way valve through a negative pressure pipe, the 4th port of the four-way valve is connected to the 3rd port of the four-way valve, the 2nd port of the four-way valve is connected to the 1st port of the four-way valve, the 2nd port of the four-way valve is connected to the outside and the air outlet pipe of the vacuum pump, the 4th port of the four-way valve is connected to the air inlet pipe of the vacuum pump, the vacuum pump sucks the air in the tank from the 4th port of the four-way valve, and the air in the tank is discharged from the 2nd port of the four-way valve through the air outlet pipe of the vacuum pump, so that a negative pressure is formed in the tank.
[0008] In some embodiments, the electromagnetic valve is electrically connected to the operation box, and the opening and closing of the electromagnetic valve is controlled through the operation box.
[0009] In some embodiments, the electromagnetic valve is an electromagnetic one-way valve.
[0010] Compared with the prior art, the advantages of the present application are that the direction of the four-way valve is adjusted, the atmospheric pressure outside the tank is introduced into the tank by the vacuum pump, a positive pressure state is formed in the tank, and the sewage in the tank is discharged from the sewage discharge pipe and the sewage suction pipe, thereby avoiding the dripping and overflowing of excrement and sewage during excrement discharge, and avoiding the discomfort caused by the foul smell of excrement and sewage when manually operating the excrement discharge valve. In addition, the device has a simple structure, low cost and small manufacturing difficulty.
[0011] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 is a schematic diagram of the positive pressure reverse discharge device of the excrement suction truck of the embodiment of the present application;
[0013] Figure 2 is a schematic diagram of the four-way valve part when discharging sewage of the excrement suction truck of the embodiment of the present application;
[0014] Figure 3 is a schematic diagram of the four-way valve part when sucking sewage of the excrement suction truck of the embodiment of the present application.
[0015] In the drawings: I, vacuum pump; II, four-way valve; III, tank; IV, sewage suction pipe; V, sewage discharge pipe; VI, electromagnetic valve; VII, negative pressure pipe; VIII, operation box; IX, air inlet pipe; X, air outlet pipe. DETAILED DESCRIPTION
[0016] The present application will be further described in detail below.
[0017] In order to make the purpose, technical scheme and advantages of the embodiment of the present application more clear, the technical scheme in the embodiment will be clearly and completely described below in combination with the drawings of the embodiment of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.
[0018] In combination Figure 1 As shown in the figure, the present embodiment provides a positive pressure reverse discharge device of a manure sucking vehicle. The upper right side of the tank body III is provided with a sucking pipe IV. The sucking pipe IV is communicated with a discharge pipe V entering the lower end of the tank body III. The outside of the tank body III is provided with an electromagnetic valve VI installed on the sucking pipe IV. When the electromagnetic valve VI is opened, the inside of the sucking pipe IV is communicated with the outside air. The air inlet and air outlet of the vacuum pump I are communicated through the air inlet pipe IX and air outlet pipe X to form a circulation. The upper left side of the tank body III is communicated with the air inlet pipe IX and air outlet pipe X through a negative pressure pipe VII to form a three-way pipe. The three-way pipe of the negative pressure pipe VII, air inlet pipe IX and air outlet pipe X is connected through a four-way valve II. The four-way valve II is sequentially provided with a No. 2 port, a No. 3 port, a No. 4 port and a No. 1 port in the clockwise direction from the lower end.
[0019] In combination Figure 3 As shown in the figure, when the manure sucking vehicle is in the state of sucking manure, the upper end of the tank body III is communicated with the No. 4 port of the four-way valve II through the negative pressure pipe VII. The No. 4 port of the four-way valve II is communicated with the No. 3 port of the four-way valve II. The No. 2 port of the four-way valve II is communicated with the No. 1 port of the four-way valve II. The No. 2 port of the four-way valve II is communicated with the outside and the air outlet pipe X of the vacuum pump I. The No. 4 port of the four-way valve II is communicated with the air inlet pipe IX of the vacuum pump I. The vacuum pump I sucks the air in the tank body III from the No. 4 port of the four-way valve II. The air in the tank body III is discharged from the No. 2 port of the four-way valve II through the air outlet pipe X of the vacuum pump I. The air in the tank body III is formed into a negative pressure state. Thus, the manure is sucked into the tank body III from the upper sucking port. When the tank body III is full, the inside of the tank is still in a negative pressure state due to the existence of the discharge pipe V. Thus, the manure exists in the sucking pipe IV. At this time, the pressure relief valve switch of the operation box VIII is pressed down. The electromagnetic valve VI is opened. The air outside the tank is entered into the tank. The negative pressure state in the tank is released. Thus, the manure in the sucking pipe IV is discharged.
[0020] In combination Figure 2 As shown in the figure, when the manure sucking vehicle is in the state of sucking manure, the four-way valve II is rotated by 90° in the clockwise direction. The No. 4 port of the four-way valve II is communicated with the No. 1 port of the four-way valve II. The No. 3 port of the four-way valve II is communicated with the No. 2 port of the four-way valve II. The lower end of the negative pressure pipe VII is communicated with the No. 4 port of the four-way valve II. The No. 4 port of the four-way valve II is communicated with the air outlet pipe X of the vacuum pump I. The No. 2 port of the four-way valve II is communicated with the outside and the air inlet pipe IX of the vacuum pump I. The vacuum pump I sucks the air from the No. 2 port of the four-way valve II. The air is pressurized and then enters into the tank body III through the No. 4 port of the four-way valve II. The tank body III is formed into a positive pressure state. Thus, the manure in the tank is discharged through the discharge pipe V and the upper sucking pipe IV. Thus, the effect of positive pressure reverse discharge is achieved.
[0021] In the process of discharging manure, the positive pressure reverse discharge device of the manure sucking vehicle adjusts the direction of the four-way valve II. The atmospheric pressure outside the tank is pressed into the tank by the vacuum pump I. The manure in the tank is discharged from the upper sucking port. Thus, the dripping and overflowing of manure and sewage during the discharge of manure are avoided. The workers are not affected by the foul smell of manure and sewage during the manual operation of the discharge valve. In addition, the device has the advantages of simple structure, low cost, small manufacturing difficulty and good practicability.
[0022] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A positive pressure backflow device for a manure suction truck, comprising a tank (III) and a vacuum pump (I), characterized in that: The upper end of the tank body (III) is provided with a sewage suction pipe (IV), the sewage suction pipe (IV) is communicated with a sewage discharge pipe (V) into the lower end of the tank body (III), the sewage suction pipe (IV) on the outside of the tank body (III) is provided with an electromagnetic valve (VI), the electromagnetic valve (VI) is communicated with the outside air when it is opened, the air inlet and the air outlet of the vacuum pump (I) are communicated to form a circulation through an air inlet pipe (IX) and an air outlet pipe (X), the upper end of the tank body (III) is communicated with the air inlet pipe (IX) and the air outlet pipe (X) through a negative pressure pipe (VII) to form a three-way pipe, the negative pressure pipe (VII) and the air inlet pipe (IX) and the air outlet pipe (X) are connected through a four-way valve (II), the four-way valve (II) is sequentially provided with a No. 2 port, a No. 3 port, a No. 4 port and a No. 1 port in the clockwise direction from the lower end.
2. The positive pressure backflush device of a manure collection vehicle according to claim 1, characterized in that The lower end of the negative pressure pipe (VII) is communicated with the No. 4 port of the four-way valve (II), the No. 4 port of the four-way valve (II) is communicated with the No. 1 port of the four-way valve (II), the No. 3 port of the four-way valve (II) is communicated with the No. 2 port of the four-way valve (II), the No. 2 port of the four-way valve (II) is communicated with the air inlet pipe (IX) of the vacuum pump (I), the No. 4 port of the four-way valve (II) is communicated with the air outlet pipe (X) of the vacuum pump (I), the vacuum pump (I) sucks the air from the No. 2 port of the four-way valve (II) and pressurizes the air, then the air enters the tank body (III) through the No. 4 port of the four-way valve (II), so that the tank body (III) forms a positive pressure.
3. The positive pressure backflush device of a manure collection vehicle according to claim 1, characterized in that The upper end of the tank body (III) is communicated with the No. 4 port of the four-way valve (II) through the negative pressure pipe (VII), the No. 4 port of the four-way valve (II) is communicated with the No. 3 port of the four-way valve (II), the No. 2 port of the four-way valve (II) is communicated with the No. 1 port of the four-way valve (II), the No. 2 port of the four-way valve (II) is communicated with the air outlet pipe (X) of the vacuum pump (I), the No. 4 port of the four-way valve (II) is communicated with the air inlet pipe (IX) of the vacuum pump (I), the vacuum pump (I) sucks the air in the tank body (III) from the No. 4 port of the four-way valve (II), discharges the air in the tank body (III) from the No. 2 port of the four-way valve (II) through the air outlet pipe (X) of the vacuum pump (I), so that the tank body (III) forms a negative pressure.
4. The positive pressure backflush device of a manure collection vehicle according to claim 1, characterized in that The electromagnetic valve (VI) is electrically connected with an operation box (VIII), and the opening and closing of the electromagnetic valve (VI) is controlled through the operation box (VIII).
5. The positive pressure backflush device of a manure collection vehicle according to claim 1, characterized in that The electromagnetic valve (VI) is an electromagnetic one-way valve.