Flush valve group

Abstract

The utility model relates to the technical field of valve banks, and discloses a flushing valve bank which comprises a valve body, a first valve seat is fixedly connected to the bottom of the valve body and is rectangular, a motor port A is formed in one side of the valve body, a motor port B is formed in the other side of the valve body, an overflow valve is arranged on the valve body, and a valve rod is arranged on the overflow valve. And a low-pressure side shuttle valve is arranged on the valve body. The flushing valve set has a pressure control function, can set oil return back pressure according to pressure requirements of customers, is of a plate type installation structure, reduces pipeline installation space, can cool oil liquid, avoids the situation that temperature rise of a hydraulic motor is too high, influences the service life and working condition characteristics of the hydraulic motor, and even directly causes damage to parts, and is suitable for popularization and application. The valve seat of the shuttle valve on the low-pressure side is made of alloy steel and is of a floating structure, and therefore interference caused by installation torque and hole pattern machining errors can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valve groups, in particular to a flushing valve group. Background Art

[0002] A valve is a mechanical device that controls the flow, direction, pressure, temperature, etc. of a flowing fluid medium. A valve is a basic component in a piping system. Valve fittings are technically the same as pumps and are often discussed as a separate category. Valves can be operated manually or with a handwheel, handle or pedal, and can also be controlled to change the pressure, temperature and flow of the fluid medium.

[0003] A Chinese patent with the publication number CN2405980Y disclosed a flushing valve, in which a pressure cup is installed on one side of the main body, the pressure cup faces the bottom of the floating valve, the outer end of the pressure cup is slightly convex outward in an arc shape, and the cup body is screwed into the space of the main body cavity. The pressure cup and the peripheral wall of the main body cavity do not contact each other, so that mud and sand can only accumulate at the bottom of the main body cavity and cannot flow into the pressure cup, so that the floating valve and the pressure cup are in good contact, the wear of the rubber ring is reduced, the service life is extended, and the water flow rate is increased due to the increase in the main body cavity space. The utility model is a type without a back cover, the back occupies a small wall space, and the installation is convenient, fast and beautiful, which is suitable for flushing sanitary ware.

[0004] However, when this type of flushing valve is in use, the oil temperature in the closed circuit is relatively high, and the return oil of the motor cannot be cooled and controlled. The heat cannot be dissipated in time, which will cause the hydraulic motor to heat up too high, affecting its service life and working characteristics, and even causing direct damage to components in severe cases. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the utility model provides a flushing valve group. Its advantages are that it has a pressure control function and can set the oil return back pressure according to the customer's pressure requirements. In addition, this valve group has a plate-type installation structure, which reduces the pipeline installation space and can cool the oil to avoid excessive temperature rise of the hydraulic motor, which affects its service life and working characteristics, and even directly causes component damage.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flushing valve group, including a valve body, a first valve seat is fixedly connected to the bottom of the valve body, the first valve seat is rectangular, a motor A port is opened on one side of the valve body, a motor B port is opened on the other side of the valve body, an overflow valve is arranged on the valve body, and a low-pressure side shuttle valve is arranged on the valve body.

[0009] Preferably, an inlet is provided on the overflow valve, and an outlet is provided on the overflow valve, and the outlet is located directly below the inlet.

[0010] This arrangement allows a small portion of the return oil to be unloaded into the oil tank through the relief valve, thereby cooling the oil and preventing the hydraulic motor from overheating, which would affect its service life and operating characteristics, or even directly cause component damage.

[0011] Preferably, the low-pressure side shuttle valve is provided with a first working port, the low-pressure side shuttle valve is provided with a common port, the low-pressure side shuttle valve is provided with a second working port, the common port is located between the first working port and the second working port, and the second working port is located directly below the first working port.

[0012] This setting enables the valve body to have a pressure control function, and can set the return oil back pressure according to the customer's pressure requirements, thereby improving the convenience of using the device and increasing the adaptability range.

[0013] Preferably, sealing rings are fixedly connected to both sides of the inner cavity of the valve body, and the number of the sealing rings is two.

[0014] This arrangement seals the joints, so that the valve body will not have a poor control effect due to weak sealing during operation.

[0015] Preferably, the valve seat of the low-pressure side shuttle valve is made of alloy steel and has a floating structure.

[0016] This setting can reduce the interference caused by installation torque and hole processing errors.

[0017] Preferably, a water flow sensor is fixedly connected to the top of the inner cavity of the valve body.

[0018] This arrangement detects the fluidity of the valve body and the liquid in the pipeline, thereby positioning the valve body for on / off switching.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the utility model provides a flushing valve group, which has the following beneficial effects:

[0021] 1. This flushing valve group is designed for oil return cooling control of the motor and has a pressure control function. It can set the oil return back pressure according to the customer's pressure requirements, and this valve group is a plate-type installation structure to reduce the pipeline installation space. When the hydraulic oil enters from the A port of the motor, the high pressure will switch the low-pressure side shuttle valve, so that a small part of the return oil from the B port of the motor will be unloaded to the oil tank through the overflow valve to cool the oil. When the hydraulic oil enters from the B port of the motor, the high pressure will switch the low-pressure side shuttle valve, so that a small part of the return oil from the A port of the motor will be unloaded to the oil tank through the overflow valve to cool the oil, thereby avoiding excessive temperature rise of the hydraulic motor, affecting its service life and working characteristics, and even directly causing component damage.

[0022] 2. This flushing valve group has two sealing rings fixedly connected on both sides of the inner cavity of the valve body. This arrangement seals the joints so that the valve body will not have poor control effects due to weak sealing during operation. The valve seat of the low-pressure side shuttle valve is made of alloy steel and has a floating structure. This arrangement can reduce interference caused by installation torque and hole processing errors. A water flow sensor is fixedly connected to the top of the inner cavity of the valve body. This arrangement detects the fluidity of the valve body and the liquid in the pipeline, thereby positioning the valve body for on-off switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a front view of the utility model;

[0025] Figure 2 It is a schematic diagram of the structure of the utility model;

[0026] Figure 3 This is a front view of the overflow valve of the utility model;

[0027] Figure 4 It is a front view of the low-pressure side shuttle valve of the utility model.

[0028] In the figure: 1. valve body; 2. first valve seat; 3. motor A port; 4. motor B port; 5. overflow valve; 6. low-pressure side shuttle valve; 51. inlet; 52. outlet; 61. first working port; 62. common port; 63. second working port; 7. sealing ring; 8. water flow sensor. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] like Figure 1-4 As shown, the utility model provides a flushing valve group, including a valve body 1, a water flow sensor 8 is fixedly connected to the top of the inner cavity of the valve body 1, so that the valve body 1 and the fluidity of the liquid in the pipeline are detected, so as to switch the valve body 1 on and off. Sealing rings 7 are fixedly connected to the two sides of the inner cavity of the valve body 1. The number of sealing rings 7 is two. In this way, the connection is sealed, so that the valve body 1 will not have a poor control effect due to weak sealing during operation. A first valve seat 2 is fixedly connected to the bottom of the valve body 1, and the first valve seat 2 is rectangular. A motor A port 3 is opened on one side of the valve body 1, and a motor B port 4 is opened on the other side of the valve body 1. An overflow valve 5 is arranged on the valve body 1, and an inlet 51 is opened on the overflow valve 5. An outlet 52 is opened on the overflow valve 5, and the outlet 52 is located directly below the inlet 51. This arrangement makes the return oil have a certain A small part of the oil is unloaded to the oil tank through the overflow valve 5, so that the oil is cooled to avoid excessive temperature rise of the hydraulic motor, which affects its service life and working characteristics, and even directly causes component damage. A low-pressure side shuttle valve 6 is arranged on the valve body 1. By setting the valve seat of the low-pressure side shuttle valve 6 to be made of alloy steel and a floating structure, such a setting can reduce the interference caused by the installation torque and the error of the hole processing. A first working port 61 is provided on the low-pressure side shuttle valve 6, a common port 62 is provided on the low-pressure side shuttle valve 6, and a second working port 63 is provided on the low-pressure side shuttle valve 6. The common port 62 is located between the first working port 61 and the second working port 63, and the second working port 63 is located directly below the first working port 61. Such a setting enables the valve body 1 to have a pressure control function, and the return oil back pressure can be set according to the customer's pressure requirements, thereby improving the convenience of using the device and improving the adaptability range.

[0031] In this embodiment, an inlet 51 is provided on the relief valve 5, an outlet 52 is provided on the relief valve 5, and the outlet 52 is located directly below the inlet 51. In this arrangement, a small portion of the return oil will be unloaded to the oil tank through the relief valve 5, thereby cooling the oil and avoiding excessive temperature rise of the hydraulic motor, affecting its service life and working characteristics, and even directly causing damage to components. A first working port 61 is provided on the low-pressure side shuttle valve 6, a common port 62 is provided on the low-pressure side shuttle valve 6, and a second working port 63 is provided on the low-pressure side shuttle valve 6. The common port 62 is located between the first working port 61 and the second working port 63, and the second working port 63 is located directly below the first working port 61. In this arrangement, the valve body 1 has It has a pressure control function and can set the return oil back pressure according to the customer's pressure requirements, thereby improving the convenience of using the device and the adaptability range. Sealing rings 7 are fixedly connected to both sides of the inner cavity of the valve body 1. There are two sealing rings 7. This setting is used to seal the connection so that the valve body 1 will not have poor control effects due to weak sealing during operation. The valve seat of the low-pressure side shuttle valve 6 is made of alloy steel and has a floating structure. This setting can reduce the interference caused by the installation torque and the error in the hole processing. A water flow sensor 8 is fixedly connected to the top of the inner cavity of the valve body 1. This setting can detect the fluidity of the valve body 1 and the liquid in the pipeline, thereby positioning the valve body 1 for switching on and off.

[0032] The working principle of this flushing valve group is described in detail below.

[0033] like Figure 1-4As shown, when in use, due to the relatively high oil temperature in the closed circuit, this valve group is used in the closed hydraulic circuit for the oil return cooling control of the motor. It has a pressure control function and can set the oil return back pressure according to the customer's pressure requirements. In addition, this valve group is a plate-type installation structure to reduce the pipeline installation space. When the hydraulic oil enters from the motor A port 3, the high pressure will switch the low pressure side shuttle valve 6, so that a small part of the oil return from the motor B port 4 is unloaded to the oil tank through the overflow valve 5, so that the oil is cooled. When the hydraulic oil enters from the motor B port 4 When the high pressure is on, the low pressure shuttle valve 6 is switched, so that a small part of the return oil from the motor A port 3 is unloaded to the oil tank through the relief valve 5, so that the oil is cooled. The relief valve 5 is provided with an inlet 51, and an outlet 52 is provided on the relief valve 5. The outlet 52 is located directly below the inlet 51, so that a small part of the return oil is unloaded to the oil tank through the relief valve 5, so that the oil is cooled, so as to avoid the hydraulic motor from overheating, affecting its service life and working characteristics, and even directly causing component damage. A first working port 61 is provided on the shuttle valve 6, a common port 62 is provided on the low-pressure side shuttle valve 6, and a second working port 63 is provided on the low-pressure side shuttle valve 6. The common port 62 is located between the first working port 61 and the second working port 63, and the second working port 63 is located directly below the first working port 61, so that the valve body 1 has a pressure control function, and the return oil back pressure can be set according to the pressure requirements of the customer, thereby improving the convenience of using the device and the adaptability range. Sealing rings 7 are fixedly connected to both sides of the inner cavity of the valve body 1. The number of sealing rings 7 is two. This arrangement is used to seal the connection, so that the valve body 1 will not have a poor control effect due to weak sealing during operation. The valve seat of the low-pressure side shuttle valve 6 is made of alloy steel and has a floating structure. This arrangement can reduce the interference caused by the installation torque and the error of the hole processing. A water flow sensor 8 is fixedly connected to the top of the inner cavity of the valve body 1, so that the fluidity of the liquid in the valve body 1 and the pipeline can be detected, thereby positioning the valve body 1 on and off.

Claims

1. A flushing valve assembly, comprising a valve body (1), characterized in that: The bottom of the valve body (1) is fixedly connected to a first valve seat (2), the first valve seat (2) is rectangular, one side of the valve body (1) is provided with a motor A port (3), the other side of the valve body (1) is provided with a motor B port (4), the valve body (1) is provided with an overflow valve (5), and the valve body (1) is provided with a low-pressure side shuttle valve (6).

2. A flushing valve assembly according to claim 1, characterized in that: The overflow valve (5) is provided with an inlet (51), and the overflow valve (5) is provided with an outlet (52), and the outlet (52) is located directly below the inlet (51).

3. A flushing valve assembly according to claim 1, characterized in that: The low-pressure side shuttle valve (6) is provided with a first working port (61), the low-pressure side shuttle valve (6) is provided with a common port (62), and the low-pressure side shuttle valve (6) is provided with a second working port (63), the common port (62) is located between the first working port (61) and the second working port (63), and the second working port (63) is located directly below the first working port (61).

4. A flushing valve assembly according to claim 1, characterized in that: Sealing rings (7) are fixedly connected to both sides of the inner cavity of the valve body (1), and the number of the sealing rings (7) is two.

5. A flushing valve assembly according to claim 1, characterized in that: A water flow sensor (8) is fixedly connected to the top of the inner cavity of the valve body (1).

6. A flushing valve assembly according to claim 1, characterized in that: The valve seat of the low-pressure side shuttle valve (6) is made of alloy steel.

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