Mixed injection device for pneumatic double-liquid grouting pump

Abstract

The utility model discloses a mixed jet device for a pneumatic double-liquid grouting pump, which comprises a pipe body and two feeding pipes, the two feeding pipes are arranged on the upper end face of the pipe body, a primary mixing cavity, a secondary mixing cavity and a blanking cavity are sequentially arranged in the pipe body from top to bottom, a central column is arranged in the pipe body, and a secondary mixing cavity is arranged in the central column. The center columns are distributed in the primary mixing cavity, the secondary mixing cavity and the discharging cavity, spiral blades are arranged on the center columns, and the primary mixing cavity and the secondary mixing cavity are arranged, so that graded mixing of grouting materials is achieved. In the primary mixing cavity, the design of the one-way circulating rotating plate is utilized, so that material backflow is effectively prevented, it is ensured that the materials can smoothly enter a mixing area during injection, meanwhile, the mixed materials are prevented from flowing back to an unmixed state, the mixing efficiency is improved, and material waste is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of mixed injection devices for pneumatic double-liquid grouting pump, belong to mixed injection technical field. BACKGROUND

[0002] In grouting engineering field, traditional mixing device usually only has one mixing cavity, material is completed mixing once after entering mixing cavity, and this mixing mode is often difficult to guarantee the sufficient contact and uniform mixing of material, leading to the quality of grouting material uneven. Therefore, a kind of mixed injection device for pneumatic double-liquid grouting pump is presented. UTILITY MODEL CONTENTS

[0003] The utility model is to provide a kind of mixed injection device for pneumatic double-liquid grouting pump, to solve the problem presented in the above background technique.

[0004] In order to achieve the above object, the utility model adopts the following technical scheme: a kind of mixed injection device for pneumatic double-liquid grouting pump, comprising:

[0005] Pipe body, the pipe body is hollow;

[0006] Two inlet pipes, two inlet pipes are arranged on the upper end surface of pipe body, the lower end of two inlet pipes is communicated with the inner cavity of pipe body, and the upper end of two inlet pipes is communicated with two outlet pipes of pneumatic double-liquid grouting pump one by one;

[0007] Among them, the inside of the pipe body is sequentially provided with preliminary mixing cavity, secondary mixing cavity and discharging cavity from top to bottom, the inside of the pipe body is provided with center column, the center column is distributed in the inside of preliminary mixing cavity, secondary mixing cavity and discharging cavity, and the center column is provided with spiral blade for making material spiral flow in preliminary mixing cavity, secondary mixing cavity and discharging cavity.

[0008] Preferably, the two sides of the preliminary mixing cavity are provided with inlet cavity, two inlet cavities are communicated with two inlet pipes respectively, and two inlet cavities are communicated with preliminary mixing cavity.

[0009] Preferably, the communication place of the preliminary mixing cavity and inlet cavity is rotatably connected with rotating plate for making material in inlet cavity unidirectional flow into preliminary mixing cavity by torsional spring.

[0010] Preferably, the center column is provided with thick column body, the upper and lower ends of the thick column body are in conical state, the thick column body is located in the inside of secondary mixing cavity, and the spiral blade is also distributed on the thick column body.

[0011] Preferably, the spiral direction of spiral blade on the upper half and lower half of the thick column body is opposite.

[0012] Preferably, the pitch of the helical blades on the rough column is smaller than the pitch of the helical blades in the downfeed cavity.

[0013] Preferably, the lower end of the tube body is connected with a nozzle through thread engagement.

[0014] Preferably, the upper end of the tube body is provided with an upper end cover through screwing, two feeding pipes are distributed inside the upper end cover, a connecting bolt is arranged at the center of the upper end cover, the threaded end of the connecting bolt penetrates through the upper end cover and is engaged and connected with the upper end of the center column, a support is arranged between the tube body and the nozzle, and the lower end of the center column is inserted into the center hole of the support.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] The primary mixing cavity and the secondary mixing cavity are arranged, so that the grouting material is mixed in stages. In the primary mixing cavity, the one-way flow design of the rotating plate effectively prevents backflow of the material, ensures that the material can smoothly enter the mixing area when being injected, and avoids backflow of the mixed material to the unmixed state, thereby improving the mixing efficiency and reducing material waste.

[0017] Further, the arrangement of the secondary mixing cavity allows the material to be fully stirred again on the basis of the primary mixing, further improving the uniformity of the mixing. The arrangement of the helical blades on the center column promotes the helical flow of the material in the mixing cavity, and this flow mode is conducive to the full contact and mixing of the materials, thereby ensuring the high-quality output of the grouting material. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The figure is a structural schematic view of the present application;

[0019] Figure 2 The figure is an exploded view of the tube body and the upper end cover of the present application;

[0020] Figure 3 The figure is a top view of the inner cavity of the tube body of the present application;

[0021] Figure 4 The figure is an exploded view of the tube body, the nozzle and the support of the present application;

[0022] Figure 5 The figure is a sectional view of the tube body of the present application;

[0023] Figure 6 The figure is a sectional view of the tube body, the center column and the helical blades of the present application.

[0024] In the figure:

[0025] 1, tube body;

[0026] 101. Preliminary mixing chamber; 102. Secondary mixing chamber; 103. Discharge chamber; 104. Feeding chamber; 105. Upper cover.

[0027] 2. Feed pipe;

[0028] 3. Central column; 301. Coarse column; 4. Helical blades;

[0029] 5. Torsion spring; 6. Rotating plate;

[0030] 7. Connecting bolts;

[0031] 8. Nozzle; 9. Bracket. Detailed Implementation

[0032] The present invention is illustrated below with specific embodiments, but these are not intended to limit the scope of the invention.

[0033] Example 1

[0034] like Figures 1-6 As shown in this embodiment, a mixing and spraying device for a pneumatic dual-liquid grouting pump is provided, including a pipe body 1 and two feed pipes 2. The pipe body 1 is hollow. The two feed pipes 2 are disposed on the upper end face of the pipe body 1. The lower ends of the two feed pipes 2 are connected to the inner cavity of the pipe body 1. The upper ends of the two feed pipes 2 are connected to the two discharge pipes of the pneumatic dual-liquid grouting pump in a one-to-one correspondence.

[0035] The tube body 1 has a preliminary mixing chamber 101, a secondary mixing chamber 102 and a discharge chamber 103 arranged from top to bottom inside the tube body 1. The lower end of the tube body 1 is connected to a nozzle 8 by a threaded engagement. The nozzle 8 sprays the material in the discharge chamber 103. A central column 3 is fixedly arranged inside the tube body 1. The central column 3 is distributed inside the preliminary mixing chamber 101, the secondary mixing chamber 102 and the discharge chamber 103. The central column 3 is provided with a spiral blade 4 for making the material spiral flow in the preliminary mixing chamber 101, the secondary mixing chamber 102 and the discharge chamber 103.

[0036] Both sides of the preliminary mixing chamber 101 are provided with feeding chambers 104. The two feeding chambers 104 are respectively connected to the two feeding pipes 2, and the two feeding chambers 104 are connected to the preliminary mixing chamber 101.

[0037] The connection between the preliminary mixing chamber 101 and the feeding chamber 104 is rotatably connected by a torsion spring 5 to a rotating plate 6 for allowing the material in the feeding chamber 104 to flow unidirectionally into the preliminary mixing chamber 101. The rotating shaft of the rotating plate 6 passes through the upper end of the tube body 1 and extends to the outside. The torsion spring 5 is sleeved on the extended end of the rotating shaft of the rotating plate 6. One end of the torsion spring 5 is fixed to the tube body 1, and the other end of the torsion spring 5 is fixed to the rotating shaft of the rotating plate 6. Under natural conditions, under the torsion of the torsion spring 5, the rotating plate 6 blocks the connection between the feeding chamber 104 and the preliminary mixing chamber 101.

[0038] When the feeding pipe 2 injects the material into the feeding cavity 104, the material in the feeding cavity 104 pushes the rotating plate 6, causing the feeding cavity 104 to communicate with the primary mixing cavity 101, at this time, the material in the feeding cavity 104 enters the primary mixing cavity 101 for primary mixing. After stopping feeding, the torsion spring 5 twists the rotating plate 6, blocking the communication between the feeding cavity 104 and the primary mixing cavity 101, preventing the material in the primary mixing cavity 101 from flowing backward into the inside of the feeding cavity 104.

[0039] After the material in the primary mixing cavity 101 is primarily mixed, it flows into the inside of the secondary mixing cavity 102 and is secondarily mixed in the secondary mixing cavity 102, and then the material in the secondary mixing cavity 102 flows into the discharging cavity 103, and finally is sprayed out from the nozzle 8 connected to the lower end of the discharging cavity 103.

[0040] Example Two

[0041] As shown in the drawings, on the basis of Example One, in this example, the upper and lower ends of the rough cylinder 301 are designed in a conical shape, which helps to reduce the resistance of the material during flow and promote the material to pass through the mixing area more smoothly. The spiral blades 4 distributed on the rough cylinder 301 realize reverse stirring of the material in the secondary mixing cavity by reversing the spiral direction of the upper half and the lower half. This reverse stirring method can more effectively break the agglomeration phenomenon between the materials and promote the full mixing between the materials, thereby further improving the uniformity of mixing. Figure 6 In addition, the blade spacing of the spiral blades 4 on the rough cylinder 301 is more compact than that of the spiral blades 4 in the discharging cavity 103. This makes the material in the secondary mixing cavity 102 receive more intense shearing and extrusion, which helps to further improve the mixing effect. When the material enters the discharging cavity 103, the flow of the material becomes more smooth with the increase of the blade spacing, providing good conditions for the final spraying operation.

[0042] Example Three

[0043] As shown in the drawings, on the basis of Example Two, in this example, the rough cylinder 301 is replaced by a rough cylinder 301' with a hollow structure. The hollow structure of the rough cylinder 301' not only reduces the weight of the device, but also provides a space for the material to flow, which helps to further improve the mixing effect.

[0044] Figure 2 ​As shown, on the basis of the first embodiment, in order to facilitate the disassembly of the center column 3, the upper end of the pipe body 1 is provided with an upper end cover 105 through a screw, two inlet pipes 2 are distributed inside the upper end cover 105, the center of the upper end cover 105 is provided with a connecting bolt 7, the threaded end of the connecting bolt 7 penetrates through the upper end cover 105 and is engaged and connected to the upper end of the center column 3, a support 9 is arranged between the pipe body 1 and the spray head 8, when installing the spray head 8, first place the support 9 at the lower end of the pipe body 1, then screw the spray head 8 to the lower end of the pipe body 1, when the spray head 8 is installed in place, the spray head 8 is pressed against the side edge of the support 9, thereby fixing the support 9, the lower end of the center column 3 is inserted into the center hole of the support 9, in this way, after the upper end cover 105 is removed from the inside of the pipe body 1, the center column 3 is connected to the upper end cover 105 through the connecting bolt 7, so that the upper end cover 105 can pull out the center column 3 together, thereby facilitating the disassembly of the center column 3.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate but not to limit the technical solutions of the present application, although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present application can still be modified or replaced equivalently without departing from the spirit and scope of the present application, any modification or partial replacement should be covered in the scope of the claims of the present application.

Claims

1. A mixing and injection device for a pneumatic dual-liquid grouting pump, characterized in that, include: The tube (1) is hollow; Two feed pipes (2) are set on the upper end face of the pipe body (1). The lower end of the two feed pipes (2) is connected to the inner cavity of the pipe body (1). The upper end of the two feed pipes (2) is connected to the two discharge pipes of the pneumatic double liquid grouting pump in a one-to-one correspondence. The tube body (1) is provided with a preliminary mixing chamber (101), a secondary mixing chamber (102) and a discharge chamber (103) arranged from top to bottom. The tube body (1) is provided with a central column (3), which is distributed inside the preliminary mixing chamber (101), the secondary mixing chamber (102) and the discharge chamber (103). The central column (3) is provided with a spiral blade (4) for making the material flow spirally in the preliminary mixing chamber (101), the secondary mixing chamber (102) and the discharge chamber (103).

2. The mixing and injection device for a pneumatic dual-liquid grouting pump according to claim 1, characterized in that, The preliminary mixing chamber (101) has feeding chambers (104) on both sides. The two feeding chambers (104) are connected to the two feeding pipes (2) respectively, and the two feeding chambers (104) are connected to the preliminary mixing chamber (101).

3. The mixing and injection device for a pneumatic dual-liquid grouting pump according to claim 2, characterized in that, The connection between the preliminary mixing chamber (101) and the feeding chamber (104) is rotatably connected by a torsion spring (5) to a rotating plate (6) for allowing the material in the feeding chamber (104) to flow unidirectionally into the preliminary mixing chamber (101).

4. The mixing and injection device for a pneumatic dual-liquid grouting pump according to claim 1, characterized in that, A coarse column (301) is provided on the central column (3). The upper and lower ends of the coarse column (301) are conical. The coarse column (301) is located inside the secondary mixing chamber (102). The spiral blades (4) are also distributed on the coarse column (301).

5. The mixing and injection device for a pneumatic dual-liquid grouting pump according to claim 4, characterized in that, The upper half of the coarse column (301) and the lower half of the spiral blades (4) have opposite spiral directions.

6. A mixing and injection device for a pneumatic dual-liquid grouting pump according to claim 4 or 5, characterized in that, The blade spacing of the spiral blades (4) on the coarse column (301) is smaller than the blade spacing of the spiral blades (4) in the feeding chamber (103).

7. The mixing and injection device for a pneumatic dual-liquid grouting pump according to claim 1, characterized in that, The lower end of the tube (1) is connected to a nozzle (8) via a threaded connection.

8. The mixing and injection device for a pneumatic dual-liquid grouting pump according to claim 7, characterized in that, The upper end of the tube body (1) is provided with an upper end cap (105) by screws. Two feed tubes (2) are distributed inside the upper end cap (105). A connecting bolt (7) is provided in the center of the upper end cap (105). The threaded end of the connecting bolt (7) passes through the upper end cap (105) and is engaged with the upper end of the central column (3). A bracket (9) is provided between the tube body (1) and the nozzle (8). The lower end of the central column (3) is inserted into the central hole of the bracket (9).

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