A gas-controlled cleaning box

Abstract

The present invention relates to an air-controlled cleaning box, comprising a box body, and a pressure reducing valve, a one-way valve and a steering valve installed in the box body, wherein a rotatable reversing piece is installed in the steering valve, and an air inlet, an air outlet and an exhaust hole are arranged on the valve body of the steering valve, and the air inlet and the air outlet can be connected or disconnected by rotating the reversing piece, and the air outlet and the exhaust hole can be connected or disconnected by rotating the reversing piece, and the one-way valve is connected between the pressure reducing valve and the air inlet of the steering valve. The air-controlled cleaning box provided by the present invention can protect the pressure reducing valve and the air pressure pump, reduce the probability of damage to the pressure reducing valve and the air pressure pump, and can reduce the waste of air pressure generated by the air pressure pump in the pressure relief state, thereby reducing the use cost.

Description

Technical Field

[0001] The invention belongs to the technical field of truck mixer cleaning, and in particular relates to an air-controlled cleaning box. Background Art

[0002] After the mixing operation of the concrete mixer truck is completed, it is necessary to promptly flush the mixing bucket, the lower hopper and other parts to prevent the residual concrete from solidifying and affecting the normal use of the equipment. When cleaning the existing concrete mixer truck, in order to increase the water pressure of the flushing water, an air pressure pump is connected to the water tank through an air-controlled cleaning box, and the air pressure pump is adjusted by the air-controlled box to control the water pressure in the water tank to ensure the cleaning effect. However, the traditional air-controlled cleaning box sets a one-way valve at the air inlet of the pressure reducing valve, which cannot protect the pressure reducing valve, thereby causing damage to the pressure reducing valve. In addition, the existing air-controlled cleaning box uses a traditional three-way valve. Since a pressure relief port is provided, when in a pressure relief state, not only the air outlet is connected to the exhaust port, but the air inlet is also connected to the pressure relief port, causing the high-pressure gas generated by the air pressure pump to be directly discharged into the atmosphere, resulting in a waste of air pressure and increased use costs. Summary of the invention

[0003] The purpose of the present invention is to provide a gas-controlled cleaning box to solve the problem that the pressure reducing valve cannot be protected.

[0004] A gas-controlled cleaning box of the present invention is implemented as follows:

[0005] A pneumatically controlled cleaning box comprises a box body, and a pressure reducing valve, a one-way valve and a steering valve installed in the box body, wherein a rotatable reversing piece is installed in the steering valve, and an air inlet, an air outlet and an exhaust hole are arranged on the valve body of the steering valve, and the air inlet and the air outlet can be connected or disconnected by rotating the reversing piece, and the air outlet and the exhaust hole can be connected or disconnected by rotating the reversing piece, and the one-way valve is connected between the pressure reducing valve and the air inlet of the steering valve.

[0006] Further, the front side of the pressure reducing valve is connected to a pressure gauge exposed from the front wall of the box body;

[0007] The top of the pressure reducing valve is connected with a pressure regulating knob extending out of the top of the box body.

[0008] Furthermore, the steering valve includes a valve body and a reversing base connected to the valve body, and a valve bonnet installed on the side of the reversing base facing away from the valve body. The reversing plate is installed in the reversing base and fixedly connected to the valve stem rigidly connected in the valve bonnet.

[0009] Furthermore, two arc slots are provided on the side of the reversing piece facing the valve body, wherein the arc slot I is connected to the air inlet hole, and the arc slot II is connected to the exhaust hole, and through the rotation of the reversing piece, the air inlet hole can be connected or disconnected with the two arc slots respectively.

[0010] Furthermore, the circular arc slot I is provided with a through hole connecting the circular arc slot I and the inner cavity of the reversing base.

[0011] Furthermore, the valve cap extends from the front wall of the box body, and a handle is installed on the annular surface of the valve cap.

[0012] Furthermore, a safety valve is installed on the air outlet.

[0013] Furthermore, the air inlet of the pressure reducing valve is connected to a flexible nut on the outer wall of the box body through an air inlet connecting rod, and flexible air pipe joints are respectively installed on the air inlet hole and the air outlet hole.

[0014] Furthermore, the one-way valve is connected to the flexible air pipe joint of the air inlet through a hose, and the air outlet is connected to the air pipe joint installed on the side of the box body at the side where the steering valve is located through a hose.

[0015] Furthermore, the steering valve and the pressure reducing valve are both fixed on the inner wall of the box body through a mounting seat.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects:

[0017] (1) The pneumatic cleaning box provided by the present invention installs the one-way valve between the pressure reducing valve and the steering valve, so that the one-way valve can protect the pressure reducing valve and the air pressure pump, thereby reducing the probability of damage to the pressure reducing valve and the air pressure pump;

[0018] (2) The steering valve used in the air-controlled cleaning box provided by the present invention is provided with a pressure relief port, which avoids connecting the air pressure pump to the atmosphere in the pressure relief state, thereby reducing the waste of air pressure generated by the air pressure pump and lowering the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 is a structural diagram of an air-controlled cleaning box according to a preferred embodiment of the present invention;

[0021] Figure 2 is a structural diagram of an air-controlled cleaning box according to a preferred embodiment of the present invention;

[0022] Figure 3 is a rear view of the gas-controlled cleaning box without the cover installed in the preferred embodiment of the present invention;

[0023] Figure 4 It is a structural diagram of a steering valve of an air-controlled cleaning box according to a preferred embodiment of the present invention;

[0024] Figure 5 is an exploded view of a steering valve of an air-controlled cleaning box according to a preferred embodiment of the present invention;

[0025] Figure 6 is a front view of a steering valve of an air-controlled cleaning box according to a preferred embodiment of the present invention;

[0026] Figure 7 yes Figure 6 Sectional view of the AA section;

[0027] Figure 8 This is a state diagram of the commutator segment of the air-controlled cleaning box of the preferred embodiment of the present invention when it rotates to pressurize;

[0028] Fig. 9 This is a state diagram of the commutator segment of the air-controlled cleaning box of the preferred embodiment of the present invention when it rotates to maintain pressure;

[0029] Fig.10 A state diagram of the commutator segment of the air-controlled cleaning box of the preferred embodiment of the present invention when it rotates to release pressure;

[0030] In the figure: box body 1, pressure reducing valve 2, one-way valve 3, steering valve 4, reversing piece 5, valve body 6, air inlet hole 7, air outlet hole 8, exhaust hole 9, cover 10, pressure gauge 11, pressure regulating knob 12, reversing base 13, valve cap 14, valve stem 15, bolt 16, arc notch 17, arc notch Ⅰ 17-1, arc notch Ⅱ 17-2. Circular step 18, through hole 19, handle 20, limit groove 21, locating pin 22, safety valve 23, air inlet connecting rod 24, union nut 25, union air pipe joint 26, air pipe joint 28, mounting seat 29, screw seat 30. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figure 1-10 As shown, a pneumatically controlled cleaning box comprises a box body 1, and a pressure reducing valve 2, a one-way valve 3 and a steering valve 4 installed in the box body 1, a rotatable reversing piece 5 is installed in the steering valve 4, and an air inlet 7, an air outlet 8 and an exhaust hole 9 are arranged on the valve body 6 of the steering valve 4, and the air inlet 7 and the air outlet 8 can be connected or disconnected by rotating the reversing piece 5, and the air outlet 8 and the exhaust hole 9 can be connected or disconnected by rotating the reversing piece 5, and the one-way valve 3 is connected between the pressure reducing valve 2 and the air inlet of the steering valve 4.

[0034] Specifically, the air inlet 7 is connected to the air pressure pump through the one-way valve 3 and the pressure reducing valve 2, the air outlet 8 is connected to the water tank, and the air exhaust hole 9 is connected to the atmosphere.

[0035] In addition, a cover 10 is provided on the rear side of the box body 1, and the cover 10 is fixed to the box body 1 by screws.

[0036] Specifically, a screw seat 30 is disposed inside the box body 1 in close contact with the box wall, and a screw connecting the cover 10 and the box body 1 passes through the cover 10 and is installed on the screw seat 30 .

[0037] like Figure 1 As shown, in order to facilitate observation of the pressure of the gas in the water tank, a pressure gauge 11 exposed from the front wall of the box body 1 is connected to the front side of the pressure reducing valve 2 .

[0038] The pressure reducing valve 2 of the traditional air-controlled cleaning box is arranged as a whole inside the box body 1. When adjusting the air pressure, the box body 1 must be opened to make adjustments. In order to increase the convenience of adjustment, the top of the pressure reducing valve 2 in this embodiment is connected to a pressure adjusting knob 12 extending from the top of the box body 1.

[0039] The pressure regulating knob 12 extends out from the box body 1 and can be directly rotated for adjustment without disassembling the box body 1, which is more convenient to use.

[0040] like Figure 4-7 As shown, the setting of the steering valve 4 is used to control the working state of the air-controlled cleaning box. The steering valve 4 includes a valve body 6 and a reversing base 13 connected to the valve body 6, and a valve cap 14 installed on the side of the reversing base 13 away from the valve body 6. The reversing plate 5 is installed in the reversing base 13 and is fixedly connected to the valve stem 15 rigidly connected in the valve cap 14.

[0041] The valve cap 14 is rotated, so that the valve stem 15 drives the reversing piece 5 to rotate, thereby realizing the switching of the working state.

[0042] Preferably, the valve cap 14 is connected to the valve stem 15 via bolts 16 , and the valve body 6 is connected to the reversing base 13 via bolts 16 , which can facilitate the disassembly of the entire steering valve 4 .

[0043] In order to facilitate the switching of the working state through the reversing piece 5, two arc grooves 17 are provided on the side of the reversing piece 5 facing the valve body 6, wherein the arc groove Ⅰ1-17 is connected to the air inlet 7, and the arc groove Ⅱ17-2 is connected to the exhaust hole 9, and through the rotation of the reversing piece 5, the air inlet 8 can be connected or disconnected with the two arc grooves 17 respectively.

[0044] Preferably, the two arc notches 17 are arranged opposite to each other and concentrically, so as to facilitate the switching of the various states of the steering valve 4 by utilizing the arc notches 17 through the rotation of the reversing piece 5 .

[0045] A circular step 18 is provided on the side of the valve body 6 facing the reversing base 13 , the air inlet 7 , the air outlet 8 and the exhaust hole 9 lead to the circular step 18 respectively, and the reversing piece 5 is mounted on the circular step 18 .

[0046] Preferably, the air inlet 7, the air outlet 8 and the exhaust hole 9 on the circular step 18 are distributed in the shape of an isosceles right triangle, and the air outlet 8 is located at the right angle point of the isosceles right triangle.

[0047] In order to connect the air inlet 7 and the air outlet 9 as well as the air outlet 8 and the exhaust hole 9, with the center of the circular step 18 as the center of the circle, the angle between the air inlet 7 and the air outlet 8 is less than or equal to the angle of the arc slot Ⅰ17-1, and similarly, the angle between the air outlet 8 and the exhaust hole 9 is less than or equal to the angle of the arc slot Ⅱ17-2.

[0048] Specifically, in this embodiment, the angle between the air inlet 7 and the air outlet 8 is equal to the angle of the arc slot I 17 - 1 , and similarly, the angle between the air outlet 8 and the exhaust hole 9 is equal to the angle of the arc slot II 17 - 2 .

[0049] Preferably, the reversing piece 5 is a double-layer structure, and the arc notch 17 is arranged in a layer close to the valve body 6. The layer is made of elastic material, such as rubber, so that the sealing between the reversing piece 5 and the valve body 6 can be ensured except for the arc notch 17.

[0050] The other layer of the reversing segment 5 is made of the same metal material as the valve body 6 , such as stainless steel, to facilitate connection with the valve stem 15 .

[0051] The reversing plate 5 of the conventional steering valve 4 will wear out after being used for a period of time, resulting in air leakage, and must be manually tightened for maintenance. In this embodiment, a through hole 19 is provided on the arc notch Ⅰ17-1, which connects the arc notch Ⅰ17-1 with the inner cavity of the reversing base 13.

[0052] The through hole 19 can place the arc notch Ⅰ17-1 connected thereto and another layer of the commutator segment 5 at the same air pressure. When the commutator segment 5 is worn, self-compensation can be achieved through air pressure to avoid air leakage, thereby reducing the complexity of maintenance.

[0053] Preferably, the through hole 19 is arranged at one end of the arc slot Ⅰ17 - 1.

[0054] In order to facilitate the adjustment of the working state of the steering valve 4 , the valve cap 14 extends from the front wall of the box body 1 , and a handle 20 is installed on the annular surface thereof.

[0055] The conventional steering valve 4 uses a knob to adjust its working state, which is difficult to rotate, while the present embodiment uses a handle 20, which is more convenient to rotate.

[0056] Preferably, a limiting groove 21 is provided in the valve cap 14 , and a positioning pin 22 installed on the reversing base 13 is provided in the limiting groove 21 , so as to limit the rotation of the valve cap 14 .

[0057] In order to ensure the normal operation of the water tank, a safety valve 23 is installed on the air outlet 8.

[0058] When the air pressure in the air outlet 8 connected to the water tank exceeds a set value, the safety valve 23 automatically opens to exhaust air.

[0059] Preferably, the safety valve 23 is installed on the side of the valve body 6 away from the reversing base 13 and communicates with the air inlet 7 .

[0060] like Figure 3 As shown, in order to increase the convenience of installing the air-controlled cleaning box, the air inlet of the pressure reducing valve 2 is connected to the movable nut 25 on the outer wall of the box body 1 through the air inlet connecting rod 24, and the air inlet hole 7 and the air outlet hole 8 are respectively installed with a movable air pipe joint 26.

[0061] In order to facilitate the assembly of the air-controlled cleaning box, the one-way valve 3 is connected to the flexible air pipe joint 26 of the air inlet 7 by a hose, and the air outlet 8 is directly connected to the air pipe joint 28 installed on the side of the box body 1 where the steering valve 4 is located by a hose.

[0062] The components inside the conventional air-controlled cleaning box are all rigidly connected, which places high demands on the positions of the components and makes assembly more complicated. However, the flexible connection provided in this embodiment increases the convenience of assembly.

[0063] Preferably, in order to facilitate the arrangement of the hose, the air inlet 7, the air outlet 8 and the exhaust hole 9 are respectively arranged on the three sides of the valve body 6, wherein the air inlet 7 is arranged at the top of the valve body 6, the exhaust hole 9 is arranged at the bottom of the valve body 6, and the air outlet 8 is arranged on the side of the valve body 6 away from the one-way valve 3, and the flexible air pipe joint 26 connected to the air outlet 8 and the air inlet 7 is a right-angle flexible air pipe joint.

[0064] In order to ensure the stability of the installation of the steering valve 4 and the pressure reducing valve 2 , the steering valve 4 and the pressure reducing valve 2 are both fixed to the inner wall of the box body 1 through a mounting seat 29 .

[0065] Preferably, the steering valve 4 and the pressure reducing valve 2 are respectively mounted on the corresponding mounting seats 29 by screws, and the supporting points can be set on the box body 1 to prevent loosening due to vibration during operation and ensure the stability of the connection.

[0066] When cleaning the mixer truck, first connect the union nut to the air pressure pump, connect the air pipe joint to the vertical, and connect the one-way valve to the union air pipe joint of the air inlet to set the pressure value in the water tank, then start the air pressure pump to pressurize the water tank, which includes the following three states:

[0067] (1) Pressurized state: Figure 8 As shown, when the air pressure in the water tank does not reach the set value, the arc notch connected to the air inlet is connected to the air outlet, while the arc notch connected to the air outlet is disconnected, and the air pressure pump continues to pressurize the water tank;

[0068] (2) Pressure holding state: Fig. 9 As shown, when the air pressure in the water tank reaches the set value, the arc notch connected to the air inlet is disconnected from the air outlet, and the arc notch connected to the air outlet is also disconnected from the air outlet, so that the water tank is in a pressure-maintaining state;

[0069] (3) Pressure relief state: Fig.10 As shown, when the mixer truck is cleaned and needs to be operated, the residual air pressure in its water tank must be released. At this time, the arc groove connected to the exhaust hole is connected to the air outlet, and the arc groove that is the same as the air inlet hole is disconnected from the air outlet, so that the residual air pressure in the water tank can be discharged into the atmosphere.

[0070] The air pump is always in working state in the pressure maintaining and pressure releasing states, and stops working automatically when the pressure in the air pump reaches a certain range.

[0071] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

[0072] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0075] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. An air-controlled cleaning box, characterized in that: The invention comprises a box body (1), and a pressure reducing valve (2), a one-way valve (3) and a steering valve (4) installed in the box body (1); a rotatable reversing piece (5) is installed in the steering valve (4); an air inlet (7), an air outlet (8) and an exhaust hole (9) are arranged on the valve body (6) of the steering valve (4); the air inlet (7) and the air outlet (8) can be connected or disconnected by the rotation of the reversing piece (5); the air outlet (8) and the exhaust hole (9) can be connected or disconnected by the rotation of the reversing piece (5); and the one-way valve (3) is connected between the pressure reducing valve (2) and the air inlet (7) of the steering valve (4); The steering valve (4) comprises a valve body (6) and a reversing base (13) connected to the valve body (6), and a valve cap (14) mounted on the side of the reversing base (13) facing away from the valve body (6); the reversing plate (5) is mounted in the reversing base (13) and fixedly connected to a valve stem (15) rigidly connected to the valve cap (14); The side of the reversing piece (5) facing the valve body (6) is provided with two arc notches (17), wherein the arc notch I (17-1) is communicated with the air inlet (7), and the arc notch II (17-2) is communicated with the air outlet (9), and by rotating the reversing piece (5), the air outlet (8) can be connected to or disconnected from the two arc notches (17) respectively; The arc notch I (17-1) is provided with a through hole (19) communicating the arc notch I (17-1) with the inner cavity of the reversing base (13); The two arc notches (17) are arranged concentrically with respect to each other.

2. The air-controlled cleaning box according to claim 1, characterized in that: The front side of the pressure reducing valve (2) is connected to a pressure gauge (11) exposed from the front wall of the box body (1); The top of the pressure reducing valve (2) is connected to a pressure regulating knob (12) extending out of the top of the box body (1).

3. The air-controlled cleaning box according to claim 1, characterized in that: The valve cap (14) extends from the front wall of the box body (1), and a handle (20) is installed on its annular surface.

4. The air-controlled cleaning box according to claim 1, characterized in that: A safety valve (23) is installed on the air outlet (8).

5. The air-controlled cleaning box according to claim 1, characterized in that: The air inlet of the pressure reducing valve is connected to a movable nut (25) on the outer wall of the box body (1) via an air inlet connecting rod (24), and movable air pipe joints (26) are respectively installed on the air inlet hole (7) and the air outlet hole (8).

6. The air-controlled cleaning box according to claim 1, characterized in that: The one-way valve (3) is connected to the flexible air pipe joint (26) of the air inlet (7) by a hose, and the air outlet (8) is connected to the air pipe joint (28) installed on the side of the box body (1) where the steering valve (4) is located by a hose.

7. The air-controlled cleaning box according to claim 1, characterized in that: The steering valve (4) and the pressure reducing valve (2) are both fixed on the inner wall of the box body (1) via a mounting seat (29).

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