Pressurizing valve of pulp shooting machine

Abstract

The utility model discloses a pressure increasing valve of a pulp shooting machine, which belongs to the technical field of pressure increasing equipment and comprises a pressure increasing pipe and an air pipe connected onto the pressure increasing pipe, a movable rod is movably mounted on the air pipe, and a pressure relief hole is arranged on the movable rod. Through the arrangement of the movable rod and the pressure relief holes, the movable rod can move relative to the air pipe, and when all the pressure relief holes are located in the inner side of the air pipe, wind power output by the wind pressure machine is pressurized in a full-power mode; when the pressure relief hole part is located on the outer side of the air pipe, a part of wind power can be lost, so that the guniting strength is reduced, adjustment is facilitated when a spraying hand works, the divided wind power is directly discharged to the outside air during pressure reduction, the air pipe can be prevented from being damaged, the divided wind power can blow away springback dust to a certain degree, and the spraying effect is improved. And the harm of dust pollution to spraying hands is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of pressure increasing device, in particular to a kind of shotcrete machine pressure increasing valve, belong to pressure increasing equipment technical field. BACKGROUND

[0002] With service life increasing, roadway is gradually aging and repairing, so it is often necessary to maintain old roadway. The method of rock roadway maintenance is to first chisel and fall the cracking, caving and other damaged parts appeared in the two sides and roof of old roadway, and then use shotcrete machine to spray and maintain these "wound parts". Although the repair area is not large, but when maintaining most of the old roadway, since the original track and other safety facilities in the roadway have been recycled and removed, therefore, before each time maintaining roadway, it is necessary to re-lay track and install safety facilities, and often the preparation work before maintenance is greater than the repair work.

[0003] When shotcrete machine sprays concrete, if wind pressure is too large, rebound amount is large, dust is much, cement consumption is much, if wind pressure is too small, spraying speed is low, and concrete is not easy to compact. At present, spraying quality is entirely dependent on the experience of spraying hand to adjust wind pressure, and relies on intuitive judgment. When the existing pressure increasing valve adjusts wind pressure, it is large on air pipe load, and air pipe is easily damaged.

[0004] In view of the problem that the existing pressure increasing valve is large on air pipe load when adjusting wind pressure, and air pipe is easily damaged, the utility model provides a new solution. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to solve the problem of the prior art, and provide a kind of shotcrete machine pressure increasing valve.

[0006] The purpose of the utility model can be achieved by adopting the following technical scheme:

[0007] A kind of shotcrete machine pressure increasing valve, including pressure increasing pipe and the wind pipe connected on the pressure increasing pipe, the movable rod is movably installed on the wind pipe, the movable rod is provided with pressure relief hole.

[0008] Preferably, the pressure increasing pipe is S-shaped pressure increasing pipe.

[0009] Preferably, the pressure increasing pipe includes feed pipe and discharge pipe and connecting pipe connected between the feed pipe and the discharge pipe.

[0010] Preferably, the wind pipe is coaxially connected with the discharge pipe.

[0011] Preferably, the both ends of the pressure increasing pipe are connected with flange.

[0012] Preferably, a sliding hole is formed in the air pipe and slidably connected with the movable rod, and the diameter of the movable rod is smaller than the inner diameter of the air pipe.

[0013] Preferably, a windproof shell is connected to one side of the air pipe, and a screw nut is fixedly connected to the windproof shell and connected with the movable rod.

[0014] Preferably, a handle is connected to one end of the movable rod, and an anti-skid pattern is arranged on the handle, and an external thread is formed in the outer wall of the movable rod close to the handle and matched with the screw nut.

[0015] Preferably, a baffle is fixedly connected to the other end of the movable rod.

[0016] Preferably, the movable rod is made of rubber.

[0017] The beneficial technical effects of the utility model are as follows: according to the shotcreting machine pressure increasing valve, the movable rod can move relative to the air pipe, when all the pressure relief holes are located inside the air pipe, the full power of the wind power output from the air compressor is increased, when part of the pressure relief holes are located outside the air pipe, part of the wind power is lost, thereby reducing the force of shotcreting, facilitating the adjustment of the shotcreting hand during work, when pressure is reduced, the divided wind power is directly unloaded to the outside air, the air pipe can be prevented from being damaged, and the divided wind power can blow away the rebounded dust to a certain extent, reducing the harm of dust pollution to the shotcreting hand. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of a preferred embodiment according to the utility model;

[0019] Figure 2 It is a whole structure schematic view of a preferred embodiment according to the utility model;

[0020] Figure 3 It is a whole structure schematic view of a preferred embodiment according to the utility model;

[0021] Figure 4 It is a movable rod structure schematic view of a preferred embodiment according to the utility model;

[0022] Figure 5 It is a normal pressure increasing schematic view of a preferred embodiment according to the utility model;

[0023] Figure 6 It is a pressure reducing schematic view of a preferred embodiment according to the utility model.

[0024] In the figure: 1, booster pipe; 2, air pipe; 3, movable rod; 4, pressure relief hole; 5, feed pipe; 6, discharge pipe; 7, connecting pipe; 8, flange; 9, sliding hole; 10, windproof shell; 11, nut; 12, handle; 13, external thread; 14, baffle. DETAILED DESCRIPTION

[0025] In order to make the technical scheme of the utility model more clear and explicit for those skilled in the art, the utility model will be described in further detail below in conjunction with the embodiments and drawings, but the implementation of the utility model is not limited to this.

[0026] As Figures 1-6 shown, the guniting machine booster valve provided by the embodiment comprises a booster pipe 1 and an air pipe 2 connected to the booster pipe 1, a movable rod 3 movably installed on the air pipe 2, and a pressure relief hole 4 formed in the movable rod 3. Through the arrangement of the movable rod 3 and the pressure relief hole 4, the movable rod 3 can move relative to the air pipe 2, and when the pressure relief hole 4 is entirely located inside the air pipe 2, the wind power output from the air compressor is fully boosted; when the pressure relief hole 4 is partially located outside the air pipe 2, a part of the wind power will be lost, thereby reducing the force of guniting, facilitating the adjustment of the guniting worker during work, and when the pressure is reduced, the separated wind power is directly discharged to the outside air, which can prevent the damage to the air pipe, and the separated wind power can blow away the rebounding dust to a certain extent, reducing the harm of dust pollution to the guniting worker.

[0027] In the embodiment, as Figure 1 , Figure 2 and Figure 3 shown, the booster pipe 1 is an S-shaped booster pipe, the booster pipe 1 comprises a feed pipe 5 and a discharge pipe 6 and a connecting pipe 7 connected between the feed pipe 5 and the discharge pipe 6, the air pipe 2 is coaxially connected with the discharge pipe 6, and the two ends of the booster pipe 1 are connected with flanges 8. Through the coaxial connection of the air pipe 2 and the discharge pipe 6, the wind power loss is reduced, and the working efficiency of the air pipe 2 is improved.

[0028] In the embodiment, as Figure 1 , Figure 3 and Figure 4As shown, the duct 2 has a sliding hole 9 that slides with the movable rod 3. The diameter of the movable rod 3 is smaller than the inner diameter of the duct 2. A windproof shell 10 is connected to one side of the outer wall of the duct 2. A nut 11, which is connected to the movable rod 3, is fixedly connected to the windproof shell 10. A handle 12 is connected to one end of the movable rod 3. The handle 12 has anti-slip texture. An external thread 13, which mates with the nut 11, is opened on the outer wall of the movable rod 3 near the handle 12. A baffle 14 is fixedly connected to the other end of the movable rod 3. The movable rod 3 is made of rubber. Through the arrangement of the windproof shell 10, the nut 11, and the external thread 13, the windproof shell 10 can control the direction of the airflow during decompression, blowing away the rebounding dust. The nut 11 and the external thread 13 facilitate control of the decompression level. The movable rod 3, being made of rubber, can connect with the sliding hole 9 to provide a sealing effect.

[0029] In this embodiment, as Figures 1-6 As shown in the figure, the working process of the shotcrete machine pressure boosting valve provided in this embodiment is as follows:

[0030] Step 1: When performing shotcreting, connect air duct 2 to the air compressor using an air hose;

[0031] Step 2: Rotate the movable rod 3 so that all the pressure relief holes 4 are located inside the air duct 2, and the air force output from the air compressor is fully pressurized, at which time the spraying force is large;

[0032] Step 3: Reverse the movable rod 3 so that the pressure relief hole 4 is located outside the air duct 2. This will result in a loss of some air force, thereby reducing the force of the shotcrete.

[0033] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A pressurization valve for a shotcrete machine, comprising a pressurization pipe (1) and an air duct (2) connected to the pressurization pipe (1), characterized in that, A movable rod (3) is movably installed on the air duct (2), and a pressure relief hole (4) is opened on the movable rod (3).

2. The shotcrete machine pressure boosting valve according to claim 1, characterized in that, The booster pipe (1) is an S-type booster pipe.

3. The shotcrete machine pressure boosting valve according to claim 1, characterized in that, The booster pipe (1) includes an inlet pipe (5) and an outlet pipe (6) as well as a connecting pipe (7) connecting the inlet pipe (5) and the outlet pipe (6).

4. The shotcrete machine pressure boosting valve according to claim 3, characterized in that, The air duct (2) is coaxially connected to the discharge pipe (6).

5. A shotcrete machine pressure boosting valve according to claim 1, characterized in that, Both ends of the booster pipe (1) are connected to flanges (8).

6. The pressurization valve for a shotcrete machine according to claim 1, characterized in that, The air duct (2) is provided with a sliding hole (9) that slides with the movable rod (3), and the diameter of the movable rod (3) is smaller than the inner diameter of the air duct (2).

7. A shotcrete machine pressure boosting valve according to claim 1, characterized in that, A windproof shell (10) is connected to one side of the outer wall of the air duct (2), and a nut (11) that is connected to the movable rod (3) is fixedly connected to the windproof shell (10).

8. A shotcrete machine pressure boosting valve according to claim 7, characterized in that, One end of the movable rod (3) is connected to a handle (12), the handle (12) is provided with anti-slip texture, and the outer wall of the movable rod (3) near the handle (12) is provided with an external thread (13) that mates with the nut (11).

9. A shotcrete machine pressure boosting valve according to claim 8, characterized in that, A baffle (14) is fixedly connected to the other end of the movable rod (3).

10. A shotcrete machine pressure boosting valve according to claim 1, characterized in that, The movable rod (3) is made of rubber.

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