Paste pump

[0035] Example one:

[0036] Such as figure 1 The shown mud pump includes a frame 1, a pumping unit 2, a screw mud pressing unit 3, and a mud mixing unit 4. The following is a detailed description of each unit:

[0037] The frame 1 can be used for supporting work or for mobile transition.

[0038] The pumping unit 2 is arranged on the frame 1. The pumping unit 2 includes a pumping hopper 20, a mud tank 21 communicating with the pumping hopper 20, a water tank 22 communicating with the mud tank 21, and a connection between the pumping hopper 20 and the mud. The distribution reversing valve 23 of the cylinder 21 and the pumping power assembly for pumping out the mud in the mud cylinder 21. Such as figure 1 Shown: the pumping direction of the pumping unit 2 in this embodiment is horizontally pumped from left to right. Among them: the distribution reversing valve 23 is an S-pipe type distribution valve; the pumping power components are the oil cylinder 24 and the piston 25; the mud cylinder 21, the water tank 22 and the pumping power components can be set as a single group or two groups as required.

[0039] The screw mud pressing unit 3 is arranged above the pumping unit 2. The screw mud pressing unit 3 includes a mud pressing hopper, a mud pressing shaft 31 arranged in the mud pressing hopper and extending along the conveying direction of the mud, and a mud pressing shaft 31 arranged on the mud pressing shaft 31 Spiral blades 32 and a mud pressing drive member 33 that drives the mud pressing shaft 31 to rotate. Such as figure 1 As shown: in this embodiment, the conveying direction of the screw mud pressing unit 3 is horizontally conveyed from right to left, that is, the mud pressing shaft 31 extends in the horizontal direction. among them:

[0040] The mud press hopper includes a mixing gate section 300, a diversion observation section 301, and a pressurized feeding section 302. The mixing gate section 300, the diversion observation section 301 and the pressurized feeding section 302 are sequentially distributed along the conveying direction of the mud. The inlet of the mud press hopper is opened at least at the upper part of the mixing gate section 300. A partition 34 is provided between the mixing gate section 300 and the diversion observation section 301. The partition 34 connects the mixing gate section 300 and the diversion observation section 301 In the upper interval, the lower part of the mixing gate section 300 and the diversion observation section 301 are connected. The mixing gate section 300 is rotated and stopped by the mud pressing shaft 31 and the spiral blade 32 to form a control gate for mud in and out; the diversion observation section 301 Used for mud diversion, the diameter of the diversion observation section 301 is close to that of the pressurized feed section 302; the pressurized feed section 302 is used for mud pressurization, and the discharge port of the press mud hopper is opened at the pressurized In the lower part of the feed section 302, the discharge port of the mud press hopper is connected with the feed port of the pumping hopper 20. The mud pressing drive component 33 is a hydraulic motor, which is connected to the mud pressing shaft 31 through the mud pressing bearing seat assembly 35.

[0041] The mud stirring unit 4 is arranged above the screw mud pressing unit 3. The mud stirring unit 4 includes a stirring hopper 40, a stirring shaft 41 arranged in the stirring hopper 40, a stirring blade 42 arranged on the stirring shaft 41, and driving the stirring shaft 41 to rotate The mixing drive part 43 of the mixing hopper 40, the discharge port of the mixing hopper 40 is connected with the input port of the mud hopper. Such as figure 1 As shown: in this embodiment, the mixing shaft 41 is parallel to the mud pressing shaft 31; the mixing driving component 43 is a hydraulic motor, which is connected to the mixing shaft 41 through the mixing bearing seat assembly 44.

[0042] The mud preparation pumping process is:

[0043] First add water to the mixing hopper 40 of the mud pressing hopper. At this time, the stirring driving part 43 is opened, the stirring shaft 41 and the stirring blade 42 rotate, and at the same time, the mud pressing driving part 33, the pressing mud shaft 31 and the spiral blade 32 are stopped; Put it into the mixing hopper 40, after a few minutes of mixing, it becomes mud with a suitable concentration. By starting the mud pressing drive part 33, the mud pressing shaft 31 and the spiral blade 32 are driven to rotate, and the screw pressing mud unit 3 presses the mud into the pumping hopper 20. Internally, the screw mud press unit 3 keeps rotating and pressurized during pumping, and the high-concentration mud is pressed into the pumping unit 2. A hydraulic motor with constant pressure is used to achieve uniform external force and constant pressure to the pumping unit 2. Feeding, the unobstructed connection of the mixing hopper 40, the mud pressing hopper and the pumping hopper 20, so that the mud powder is made into mud from top to bottom, and the mud is pressed into the pumping unit 2 from left to right, and finally pumped out, the whole process Fully enclosed, with smaller dimensions and weight, smaller footprint, and more efficient completion of mud injection construction.

[0044] In this embodiment, the pressure is constant, the mud making and pumping are continuously completed in one machine body, and it is completely enclosed in the middle, with a smaller size and weight, a smaller and cleaner site, and a more efficient completion of mud injection construction; the same principle is also true It is suitable for large-scale mud pumps. It is used to transport the soil excavated by pipe jacking and shield tunneling in the form of non-drip thick mud from underground to the ground. It is directly transported by truck in a way that does not pollute the environment. The construction in the central area of ​​the city has more practical significance.

[0045] Embodiment two:

[0046] Such as figure 2 It is shown that this embodiment is basically the same as the first embodiment, and the difference is that: in this embodiment: the distribution reversing valve 23 adopts a butterfly valve or a cone valve or a ball valve or a gate valve.

[0047] Embodiment three:

[0048] Such as image 3 Shown: this embodiment is basically the same as the first embodiment, the difference is: in this embodiment: the screw mud pressing unit 3 is arranged on the side of the pumping unit 2, and the discharge port of the mud pressing hopper is opened in the pressurizing The side of the feed section 302.